1 /*-
2 * Copyright (c) 2020-2025 The FreeBSD Foundation
3 * Copyright (c) 2020-2025 Bjoern A. Zeeb
4 *
5 * This software was developed by Björn Zeeb under sponsorship from
6 * the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 /*
31 * Public functions are called linuxkpi_*().
32 * Internal (static) functions are called lkpi_*().
33 *
34 * The internal structures holding metadata over public structures are also
35 * called lkpi_xxx (usually with a member at the end called xxx).
36 * Note: we do not replicate the structure names but the general variable names
37 * for these (e.g., struct hw -> struct lkpi_hw, struct sta -> struct lkpi_sta).
38 * There are macros to access one from the other.
39 * We call the internal versions lxxx (e.g., hw -> lhw, sta -> lsta).
40 */
41
42 /*
43 * TODO:
44 * - lots :)
45 * - HW_CRYPTO: we need a "keystore" and an ordered list for suspend/resume.
46 */
47
48 #include <sys/param.h>
49 #include <sys/types.h>
50 #include <sys/kernel.h>
51 #include <sys/errno.h>
52 #include <sys/malloc.h>
53 #include <sys/module.h>
54 #include <sys/mutex.h>
55 #include <sys/sbuf.h>
56 #include <sys/socket.h>
57 #include <sys/sysctl.h>
58 #include <sys/queue.h>
59 #include <sys/taskqueue.h>
60 #include <sys/libkern.h>
61
62 #include <net/if.h>
63 #include <net/if_var.h>
64 #include <net/if_media.h>
65 #include <net/ethernet.h>
66
67 #include <net80211/ieee80211_var.h>
68 #include <net80211/ieee80211_proto.h>
69 #include <net80211/ieee80211_ratectl.h>
70 #include <net80211/ieee80211_radiotap.h>
71 #include <net80211/ieee80211_vht.h>
72
73 #define LINUXKPI_NET80211
74 #include <net/mac80211.h>
75
76 #include <linux/workqueue.h>
77 #include <linux/rculist.h>
78 #include "linux_80211.h"
79
80 #define LKPI_80211_WME
81 #define LKPI_80211_HW_CRYPTO
82 #define LKPI_80211_HT
83 #define LKPI_80211_VHT
84
85 #if defined(LKPI_80211_VHT) && !defined(LKPI_80211_HT)
86 #define LKPI_80211_HT
87 #endif
88 #if defined(LKPI_80211_HT) && !defined(LKPI_80211_HW_CRYPTO)
89 #define LKPI_80211_HW_CRYPTO
90 #endif
91
92 static MALLOC_DEFINE(M_LKPI80211, "lkpi80211", "LinuxKPI 80211 compat");
93
94 /* XXX-BZ really want this and others in queue.h */
95 #define TAILQ_ELEM_INIT(elm, field) do { \
96 (elm)->field.tqe_next = NULL; \
97 (elm)->field.tqe_prev = NULL; \
98 } while (0)
99
100 /* -------------------------------------------------------------------------- */
101
102 SYSCTL_DECL(_compat_linuxkpi);
103 SYSCTL_NODE(_compat_linuxkpi, OID_AUTO, 80211, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
104 "LinuxKPI 802.11 compatibility layer");
105
106 #if defined(LKPI_80211_HW_CRYPTO)
107 static bool lkpi_hwcrypto = false;
108 SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, hw_crypto, CTLFLAG_RDTUN,
109 &lkpi_hwcrypto, 0, "Enable LinuxKPI 802.11 hardware crypto offload");
110
111 static bool lkpi_hwcrypto_tkip = false;
112 SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, tkip, CTLFLAG_RDTUN,
113 &lkpi_hwcrypto_tkip, 0, "Enable LinuxKPI 802.11 TKIP crypto offload");
114 #endif
115
116 /* Keep public for as long as header files are using it too. */
117 int linuxkpi_debug_80211;
118
119 #ifdef LINUXKPI_DEBUG_80211
120 SYSCTL_INT(_compat_linuxkpi_80211, OID_AUTO, debug, CTLFLAG_RWTUN,
121 &linuxkpi_debug_80211, 0, "LinuxKPI 802.11 debug level");
122
123 #define UNIMPLEMENTED if (linuxkpi_debug_80211 & D80211_TODO) \
124 printf("XXX-TODO %s:%d: UNIMPLEMENTED\n", __func__, __LINE__)
125 #define TRACEOK() if (linuxkpi_debug_80211 & D80211_TRACEOK) \
126 printf("XXX-TODO %s:%d: TRACEPOINT\n", __func__, __LINE__)
127 #else
128 #define UNIMPLEMENTED do { } while (0)
129 #define TRACEOK() do { } while (0)
130 #endif
131
132 /* #define PREP_TX_INFO_DURATION (IEEE80211_TRANS_WAIT * 1000) */
133 #ifndef PREP_TX_INFO_DURATION
134 #define PREP_TX_INFO_DURATION 0 /* Let the driver do its thing. */
135 #endif
136
137 /* This is DSAP | SSAP | CTRL | ProtoID/OrgCode{3}. */
138 const uint8_t rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
139
140 /* IEEE 802.11-05/0257r1 */
141 const uint8_t bridge_tunnel_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
142
143 /* IEEE 802.11e Table 20i-UP-to-AC mappings. */
144 static const uint8_t ieee80211e_up_to_ac[] = {
145 IEEE80211_AC_BE,
146 IEEE80211_AC_BK,
147 IEEE80211_AC_BK,
148 IEEE80211_AC_BE,
149 IEEE80211_AC_VI,
150 IEEE80211_AC_VI,
151 IEEE80211_AC_VO,
152 IEEE80211_AC_VO,
153 #if 0
154 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
155 #endif
156 };
157
158 const struct cfg80211_ops linuxkpi_mac80211cfgops = {
159 /*
160 * XXX TODO need a "glue layer" to link cfg80211 ops to
161 * mac80211 and to the driver or net80211.
162 * Can we pass some on 1:1? Need to compare the (*f)().
163 */
164 };
165
166 #if 0
167 static struct lkpi_sta *lkpi_find_lsta_by_ni(struct lkpi_vif *,
168 struct ieee80211_node *);
169 #endif
170 static void lkpi_80211_txq_tx_one(struct lkpi_sta *, struct mbuf *);
171 static void lkpi_80211_txq_task(void *, int);
172 static void lkpi_80211_lhw_rxq_task(void *, int);
173 static void lkpi_ieee80211_free_skb_mbuf(void *);
174 #ifdef LKPI_80211_WME
175 static int lkpi_wme_update(struct lkpi_hw *, struct ieee80211vap *, bool);
176 #endif
177
178 static const char *
lkpi_rate_info_bw_to_str(enum rate_info_bw bw)179 lkpi_rate_info_bw_to_str(enum rate_info_bw bw)
180 {
181
182 switch (bw) {
183
184 case RATE_INFO_BW_20:
185 return ("20");
186 break;
187 case RATE_INFO_BW_5:
188 return ("5");
189 break;
190 case RATE_INFO_BW_10:
191 return ("10");
192 break;
193 case RATE_INFO_BW_40:
194 return ("40");
195 break;
196 case RATE_INFO_BW_80:
197 return ("80");
198 break;
199 case RATE_INFO_BW_160:
200 return ("160");
201 break;
202 case RATE_INFO_BW_HE_RU:
203 IMPROVE("nl80211_he_ru_alloc");
204 return ("HE_RU");
205 break;
206 case RATE_INFO_BW_320:
207 return ("320");
208 break;
209 case RATE_INFO_BW_EHT_RU:
210 IMPROVE("nl80211_eht_ru_alloc");
211 return ("EHT_RU");
212 break;
213 default:
214 return ("?");
215 break;
216 }
217 }
218
219 static void
lkpi_nl80211_sta_info_to_str(struct sbuf * s,const char * prefix,const uint64_t flags)220 lkpi_nl80211_sta_info_to_str(struct sbuf *s, const char *prefix,
221 const uint64_t flags)
222 {
223 int bit, i;
224
225 sbuf_printf(s, "%s %#010jx", prefix, flags);
226
227 i = 0;
228 for (bit = 0; bit < BITS_PER_TYPE(flags); bit++) {
229
230 if ((flags & BIT_ULL(bit)) == 0)
231 continue;
232
233 #define EXPAND_CASE(_flag) \
234 case NL80211_STA_INFO_ ## _flag: \
235 sbuf_printf(s, "%c%s", (i == 0) ? '<' : ',', #_flag); \
236 i++; \
237 break;
238
239 switch (bit) {
240 EXPAND_CASE(BEACON_RX)
241 EXPAND_CASE(BEACON_SIGNAL_AVG)
242 EXPAND_CASE(BSS_PARAM)
243 EXPAND_CASE(CHAIN_SIGNAL)
244 EXPAND_CASE(CHAIN_SIGNAL_AVG)
245 EXPAND_CASE(CONNECTED_TIME)
246 EXPAND_CASE(INACTIVE_TIME)
247 EXPAND_CASE(SIGNAL)
248 EXPAND_CASE(SIGNAL_AVG)
249 EXPAND_CASE(STA_FLAGS)
250 EXPAND_CASE(RX_BITRATE)
251 EXPAND_CASE(RX_PACKETS)
252 EXPAND_CASE(RX_BYTES)
253 EXPAND_CASE(RX_DROP_MISC)
254 EXPAND_CASE(TX_BITRATE)
255 EXPAND_CASE(TX_PACKETS)
256 EXPAND_CASE(TX_BYTES)
257 EXPAND_CASE(TX_BYTES64)
258 EXPAND_CASE(RX_BYTES64)
259 EXPAND_CASE(TX_FAILED)
260 EXPAND_CASE(TX_RETRIES)
261 EXPAND_CASE(RX_DURATION)
262 EXPAND_CASE(TX_DURATION)
263 EXPAND_CASE(ACK_SIGNAL)
264 EXPAND_CASE(ACK_SIGNAL_AVG)
265 default:
266 sbuf_printf(s, "%c?%d", (i == 0) ? '<' : ',', bit);
267 break;
268 }
269 }
270 #undef EXPAND_CASE
271 if (i > 0)
272 sbuf_printf(s, ">");
273 sbuf_printf(s, "\n");
274 }
275
276 static int
lkpi_80211_dump_stas(SYSCTL_HANDLER_ARGS)277 lkpi_80211_dump_stas(SYSCTL_HANDLER_ARGS)
278 {
279 struct lkpi_hw *lhw;
280 struct ieee80211_hw *hw;
281 struct ieee80211vap *vap;
282 struct lkpi_vif *lvif;
283 struct ieee80211_vif *vif;
284 struct lkpi_sta *lsta;
285 struct ieee80211_sta *sta;
286 struct station_info sinfo;
287 struct sbuf s;
288 int error;
289
290 if (req->newptr)
291 return (EPERM);
292
293 lvif = (struct lkpi_vif *)arg1;
294 vif = LVIF_TO_VIF(lvif);
295 vap = LVIF_TO_VAP(lvif);
296 lhw = vap->iv_ic->ic_softc;
297 hw = LHW_TO_HW(lhw);
298
299 sbuf_new_for_sysctl(&s, NULL, 1024, req);
300
301 wiphy_lock(hw->wiphy);
302 list_for_each_entry(lsta, &lvif->lsta_list, lsta_list) {
303 sta = LSTA_TO_STA(lsta);
304
305 sbuf_putc(&s, '\n');
306 sbuf_printf(&s, "lsta %p sta %p added_to_drv %d\n", lsta, sta, lsta->added_to_drv);
307
308 memset(&sinfo, 0, sizeof(sinfo));
309 error = lkpi_80211_mo_sta_statistics(hw, vif, sta, &sinfo);
310 if (error == EEXIST) /* Not added to driver. */
311 continue;
312 if (error == ENOTSUPP) {
313 sbuf_printf(&s, " sta_statistics not supported\n");
314 continue;
315 }
316 if (error != 0) {
317 sbuf_printf(&s, " sta_statistics failed: %d\n", error);
318 continue;
319 }
320
321 /* If no RX_BITRATE is reported, try to fill it in from the lsta sinfo. */
322 if ((sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) == 0 &&
323 (lsta->sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) != 0) {
324 memcpy(&sinfo.rxrate, &lsta->sinfo.rxrate, sizeof(sinfo.rxrate));
325 sinfo.filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE);
326 }
327
328 lkpi_nl80211_sta_info_to_str(&s, " nl80211_sta_info (valid fields)", sinfo.filled);
329 sbuf_printf(&s, " connected_time %u inactive_time %u\n",
330 sinfo.connected_time, sinfo.inactive_time);
331 sbuf_printf(&s, " rx_bytes %ju rx_packets %u rx_dropped_misc %u\n",
332 (uintmax_t)sinfo.rx_bytes, sinfo.rx_packets, sinfo.rx_dropped_misc);
333 sbuf_printf(&s, " rx_duration %ju rx_beacon %u rx_beacon_signal_avg %d\n",
334 (uintmax_t)sinfo.rx_duration, sinfo.rx_beacon, (int8_t)sinfo.rx_beacon_signal_avg);
335
336 sbuf_printf(&s, " tx_bytes %ju tx_packets %u tx_failed %u\n",
337 (uintmax_t)sinfo.tx_bytes, sinfo.tx_packets, sinfo.tx_failed);
338 sbuf_printf(&s, " tx_duration %ju tx_retries %u\n",
339 (uintmax_t)sinfo.tx_duration, sinfo.tx_retries);
340
341 sbuf_printf(&s, " signal %d signal_avg %d ack_signal %d avg_ack_signal %d\n",
342 sinfo.signal, sinfo.signal_avg, sinfo.ack_signal, sinfo.avg_ack_signal);
343
344 sbuf_printf(&s, " generation %d assoc_req_ies_len %zu chains %d\n",
345 sinfo.generation, sinfo.assoc_req_ies_len, sinfo.chains);
346
347 for (int i = 0; i < sinfo.chains && i < IEEE80211_MAX_CHAINS; i++) {
348 sbuf_printf(&s, " chain[%d] signal %d signal_avg %d\n",
349 i, (int8_t)sinfo.chain_signal[i], (int8_t)sinfo.chain_signal_avg[i]);
350 }
351
352 /* assoc_req_ies, bss_param, sta_flags */
353
354 sbuf_printf(&s, " rxrate: flags %b bw %u(%s) legacy %u kbit/s mcs %u nss %u\n",
355 sinfo.rxrate.flags, CFG80211_RATE_INFO_FLAGS_BITS,
356 sinfo.rxrate.bw, lkpi_rate_info_bw_to_str(sinfo.rxrate.bw),
357 sinfo.rxrate.legacy * 100,
358 sinfo.rxrate.mcs, sinfo.rxrate.nss);
359 sbuf_printf(&s, " he_dcm %u he_gi %u he_ru_alloc %u eht_gi %u\n",
360 sinfo.rxrate.he_dcm, sinfo.rxrate.he_gi, sinfo.rxrate.he_ru_alloc,
361 sinfo.rxrate.eht_gi);
362 sbuf_printf(&s, " txrate: flags %b bw %u(%s) legacy %u kbit/s mcs %u nss %u\n",
363 sinfo.txrate.flags, CFG80211_RATE_INFO_FLAGS_BITS,
364 sinfo.txrate.bw, lkpi_rate_info_bw_to_str(sinfo.txrate.bw),
365 sinfo.txrate.legacy * 100,
366 sinfo.txrate.mcs, sinfo.txrate.nss);
367 sbuf_printf(&s, " he_dcm %u he_gi %u he_ru_alloc %u eht_gi %u\n",
368 sinfo.txrate.he_dcm, sinfo.txrate.he_gi, sinfo.txrate.he_ru_alloc,
369 sinfo.txrate.eht_gi);
370 }
371 wiphy_unlock(hw->wiphy);
372
373 sbuf_finish(&s);
374 sbuf_delete(&s);
375
376 return (0);
377 }
378
379 static enum ieee80211_sta_rx_bw
lkpi_cw_to_rx_bw(enum nl80211_chan_width cw)380 lkpi_cw_to_rx_bw(enum nl80211_chan_width cw)
381 {
382 switch (cw) {
383 case NL80211_CHAN_WIDTH_320:
384 return (IEEE80211_STA_RX_BW_320);
385 case NL80211_CHAN_WIDTH_160:
386 case NL80211_CHAN_WIDTH_80P80:
387 return (IEEE80211_STA_RX_BW_160);
388 case NL80211_CHAN_WIDTH_80:
389 return (IEEE80211_STA_RX_BW_80);
390 case NL80211_CHAN_WIDTH_40:
391 return (IEEE80211_STA_RX_BW_40);
392 case NL80211_CHAN_WIDTH_20:
393 case NL80211_CHAN_WIDTH_20_NOHT:
394 return (IEEE80211_STA_RX_BW_20);
395 case NL80211_CHAN_WIDTH_5:
396 case NL80211_CHAN_WIDTH_10:
397 /* Unsupported input. */
398 return (IEEE80211_STA_RX_BW_20);
399 }
400 }
401
402 static enum nl80211_chan_width
lkpi_rx_bw_to_cw(enum ieee80211_sta_rx_bw rx_bw)403 lkpi_rx_bw_to_cw(enum ieee80211_sta_rx_bw rx_bw)
404 {
405 switch (rx_bw) {
406 case IEEE80211_STA_RX_BW_20:
407 return (NL80211_CHAN_WIDTH_20); /* _NOHT */
408 case IEEE80211_STA_RX_BW_40:
409 return (NL80211_CHAN_WIDTH_40);
410 case IEEE80211_STA_RX_BW_80:
411 return (NL80211_CHAN_WIDTH_80);
412 case IEEE80211_STA_RX_BW_160:
413 return (NL80211_CHAN_WIDTH_160); /* 80P80 */
414 case IEEE80211_STA_RX_BW_320:
415 return (NL80211_CHAN_WIDTH_320);
416 }
417 }
418
419 static void
lkpi_sync_chanctx_cw_from_rx_bw(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)420 lkpi_sync_chanctx_cw_from_rx_bw(struct ieee80211_hw *hw,
421 struct ieee80211_vif *vif, struct ieee80211_sta *sta)
422 {
423 struct ieee80211_chanctx_conf *chanctx_conf;
424 enum ieee80211_sta_rx_bw old_bw;
425 uint32_t changed;
426
427 chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf,
428 lockdep_is_held(&hw->wiphy->mtx));
429 if (chanctx_conf == NULL)
430 return;
431
432 old_bw = lkpi_cw_to_rx_bw(chanctx_conf->def.width);
433 if (old_bw == sta->deflink.bandwidth)
434 return;
435
436 chanctx_conf->def.width = lkpi_rx_bw_to_cw(sta->deflink.bandwidth);
437 if (chanctx_conf->def.width == NL80211_CHAN_WIDTH_20 &&
438 !sta->deflink.ht_cap.ht_supported)
439 chanctx_conf->def.width = NL80211_CHAN_WIDTH_20_NOHT;
440
441 chanctx_conf->min_def = chanctx_conf->def;
442
443 vif->bss_conf.chanreq.oper.width = chanctx_conf->def.width;
444
445 changed = IEEE80211_CHANCTX_CHANGE_MIN_WIDTH;
446 changed |= IEEE80211_CHANCTX_CHANGE_WIDTH;
447 lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed);
448 }
449
450 #if defined(LKPI_80211_HT)
451 static void
lkpi_sta_sync_ht_from_ni(struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_node * ni)452 lkpi_sta_sync_ht_from_ni(struct ieee80211_vif *vif, struct ieee80211_sta *sta,
453 struct ieee80211_node *ni)
454 {
455 struct ieee80211vap *vap;
456 uint8_t *ie;
457 struct ieee80211_ht_cap *htcap;
458 int i, rx_nss;
459
460 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0) {
461 sta->deflink.ht_cap.ht_supported = false;
462 return;
463 }
464
465 sta->deflink.ht_cap.ht_supported = true;
466
467 /* htcap->ampdu_params_info */
468 vap = ni->ni_vap;
469 sta->deflink.ht_cap.ampdu_density = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
470 if (sta->deflink.ht_cap.ampdu_density > vap->iv_ampdu_density)
471 sta->deflink.ht_cap.ampdu_density = vap->iv_ampdu_density;
472 sta->deflink.ht_cap.ampdu_factor = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
473 if (sta->deflink.ht_cap.ampdu_factor > vap->iv_ampdu_rxmax)
474 sta->deflink.ht_cap.ampdu_factor = vap->iv_ampdu_rxmax;
475
476 ie = ni->ni_ies.htcap_ie;
477 KASSERT(ie != NULL, ("%s: HT but no htcap_ie on ni %p\n", __func__, ni));
478 if (ie[0] == IEEE80211_ELEMID_VENDOR)
479 ie += 4;
480 ie += 2;
481 htcap = (struct ieee80211_ht_cap *)ie;
482 sta->deflink.ht_cap.cap = htcap->cap_info;
483 sta->deflink.ht_cap.mcs = htcap->mcs;
484
485 if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) != 0 &&
486 IEEE80211_IS_CHAN_HT40(ni->ni_chan))
487 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_40;
488 else
489 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_20;
490
491 /*
492 * 802.11n-2009 20.6 Parameters for HT MCSs gives the mandatory/
493 * optional MCS for Nss=1..4. We need to check the first four
494 * MCS sets from the Rx MCS Bitmask; then there is MCS 32 and
495 * MCS33.. is UEQM.
496 */
497 rx_nss = 0;
498 for (i = 0; i < 4; i++) {
499 if (htcap->mcs.rx_mask[i])
500 rx_nss++;
501 }
502 if (rx_nss > 0)
503 sta->deflink.rx_nss = rx_nss;
504
505 IMPROVE("sta->wme");
506
507 if (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_MAX_AMSDU)
508 sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_7935;
509 else
510 sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_3839;
511 sta->deflink.agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA;
512 #ifdef __handled_by_driver__ /* iwlwifi only? actually unused? */
513 for (i = 0; i < nitems(sta.deflink.agg.max_tid_amsdu_len); i++) {
514 sta->deflink.agg.max_tid_amsdu_len[j] = ;
515 }
516 #endif
517 }
518 #endif
519
520 #if defined(LKPI_80211_VHT)
521 static void
lkpi_sta_sync_vht_from_ni(struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_node * ni)522 lkpi_sta_sync_vht_from_ni(struct ieee80211_vif *vif, struct ieee80211_sta *sta,
523 struct ieee80211_node *ni)
524 {
525 uint32_t width;
526 int rx_nss;
527 uint16_t rx_mcs_map;
528 uint8_t mcs;
529
530 if ((ni->ni_flags & IEEE80211_NODE_VHT) == 0 ||
531 !IEEE80211_IS_CHAN_VHT_5GHZ(ni->ni_chan)) {
532 sta->deflink.vht_cap.vht_supported = false;
533 return;
534 }
535
536 sta->deflink.vht_cap.vht_supported = true;
537
538 sta->deflink.vht_cap.cap = ni->ni_vhtcap;
539 sta->deflink.vht_cap.vht_mcs = ni->ni_vht_mcsinfo;
540
541 /*
542 * If VHT20/40 are selected do not update the bandwidth
543 * from HT but stya on VHT.
544 */
545 if (ni->ni_vht_chanwidth == IEEE80211_VHT_CHANWIDTH_USE_HT)
546 goto skip_bw;
547
548 width = (sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
549 switch (width) {
550 #if 0
551 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
552 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
553 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_160;
554 break;
555 #endif
556 default:
557 /* Check if we do support 160Mhz somehow after all. */
558 #if 0
559 if ((sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) != 0)
560 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_160;
561 else
562 #endif
563 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_80;
564 }
565 skip_bw:
566
567 rx_nss = 0;
568 rx_mcs_map = sta->deflink.vht_cap.vht_mcs.rx_mcs_map;
569 for (int i = 7; i >= 0; i--) {
570 mcs = rx_mcs_map >> (2 * i);
571 mcs &= 0x3;
572 if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
573 rx_nss = i + 1;
574 break;
575 }
576 }
577 if (rx_nss > 0)
578 sta->deflink.rx_nss = rx_nss;
579
580 switch (sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
581 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
582 sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
583 break;
584 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
585 sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
586 break;
587 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
588 default:
589 sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
590 break;
591 }
592 }
593 #endif
594
595 static void
lkpi_sta_sync_from_ni(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_node * ni,bool updchnctx)596 lkpi_sta_sync_from_ni(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
597 struct ieee80211_sta *sta, struct ieee80211_node *ni, bool updchnctx)
598 {
599
600 #if defined(LKPI_80211_HT)
601 lkpi_sta_sync_ht_from_ni(vif, sta, ni);
602 #endif
603 #if defined(LKPI_80211_VHT)
604 lkpi_sta_sync_vht_from_ni(vif, sta, ni);
605 #endif
606 /*
607 * We are also called from node allocation which net80211
608 * can do even on `ifconfig down`; in that case the chanctx
609 * may still be valid and we get a discrepancy between
610 * sta and chanctx. Thus do not try to update the chanctx
611 * when called from lkpi_lsta_alloc().
612 */
613 if (updchnctx)
614 lkpi_sync_chanctx_cw_from_rx_bw(hw, vif, sta);
615 }
616
617 static uint8_t
lkpi_get_max_rx_chains(struct ieee80211_node * ni)618 lkpi_get_max_rx_chains(struct ieee80211_node *ni)
619 {
620 uint8_t chains;
621 #if defined(LKPI_80211_HT) || defined(LKPI_80211_VHT)
622 struct lkpi_sta *lsta;
623 struct ieee80211_sta *sta;
624
625 lsta = ni->ni_drv_data;
626 sta = LSTA_TO_STA(lsta);
627 #endif
628
629 chains = 1;
630 #if defined(LKPI_80211_HT)
631 IMPROVE("We should factor counting MCS/NSS out for sync and here");
632 if (sta->deflink.ht_cap.ht_supported)
633 chains = MAX(chains, sta->deflink.rx_nss);
634 #endif
635
636 #if defined(LKPI_80211_VHT)
637 if (sta->deflink.vht_cap.vht_supported)
638 chains = MAX(chains, sta->deflink.rx_nss);
639 #endif
640
641 return (chains);
642 }
643
644 static void
lkpi_lsta_dump(struct lkpi_sta * lsta,struct ieee80211_node * ni,const char * _f,int _l)645 lkpi_lsta_dump(struct lkpi_sta *lsta, struct ieee80211_node *ni,
646 const char *_f, int _l)
647 {
648
649 #ifdef LINUXKPI_DEBUG_80211
650 if ((linuxkpi_debug_80211 & D80211_TRACE_STA) == 0)
651 return;
652 if (lsta == NULL)
653 return;
654
655 printf("%s:%d lsta %p ni %p sta %p\n",
656 _f, _l, lsta, ni, &lsta->sta);
657 if (ni != NULL)
658 ieee80211_dump_node(NULL, ni);
659 printf("\ttxq_task txq len %d mtx\n", mbufq_len(&lsta->txq));
660 printf("\tkc %p state %d added_to_drv %d in_mgd %d\n",
661 &lsta->kc[0], lsta->state, lsta->added_to_drv, lsta->in_mgd);
662 #endif
663 }
664
665 static void
lkpi_lsta_remove(struct lkpi_sta * lsta,struct lkpi_vif * lvif)666 lkpi_lsta_remove(struct lkpi_sta *lsta, struct lkpi_vif *lvif)
667 {
668
669 lockdep_assert_wiphy(lsta->hw->wiphy);
670
671 KASSERT(!list_empty(&lsta->lsta_list),
672 ("%s: lsta %p ni %p\n", __func__, lsta, lsta->ni));
673 list_del_init(&lsta->lsta_list);
674 }
675
676 static struct lkpi_sta *
lkpi_lsta_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN],struct ieee80211_hw * hw,struct ieee80211_node * ni)677 lkpi_lsta_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN],
678 struct ieee80211_hw *hw, struct ieee80211_node *ni)
679 {
680 struct lkpi_sta *lsta;
681 struct lkpi_vif *lvif;
682 struct ieee80211_vif *vif;
683 struct ieee80211_sta *sta;
684 int band, i, tid;
685
686 lsta = malloc(sizeof(*lsta) + hw->sta_data_size, M_LKPI80211,
687 M_NOWAIT | M_ZERO);
688 if (lsta == NULL)
689 return (NULL);
690
691 lsta->hw = hw;
692 lsta->added_to_drv = false;
693 lsta->state = IEEE80211_STA_NOTEXIST;
694 /*
695 * Link the ni to the lsta here without taking a reference.
696 * For one we would have to take the reference in node_init()
697 * as ieee80211_alloc_node() will initialise the refcount after us.
698 * For the other a ni and an lsta are 1:1 mapped and always together
699 * from [ic_]node_alloc() to [ic_]node_free() so we are essentally
700 * using the ni references for the lsta as well despite it being
701 * two separate allocations.
702 */
703 lsta->ni = ni;
704 /* The back-pointer "drv_data" to net80211_node let's us get lsta. */
705 ni->ni_drv_data = lsta;
706
707 lvif = VAP_TO_LVIF(vap);
708 vif = LVIF_TO_VIF(lvif);
709 sta = LSTA_TO_STA(lsta);
710
711 IEEE80211_ADDR_COPY(sta->addr, mac);
712
713 /* TXQ */
714 for (tid = 0; tid < nitems(sta->txq); tid++) {
715 struct lkpi_txq *ltxq;
716
717 /* We are not limiting ourselves to hw.queues here. */
718 ltxq = malloc(sizeof(*ltxq) + hw->txq_data_size,
719 M_LKPI80211, M_NOWAIT | M_ZERO);
720 if (ltxq == NULL)
721 goto cleanup;
722 /* iwlwifi//mvm/sta.c::tid_to_mac80211_ac[] */
723 if (tid == IEEE80211_NUM_TIDS) {
724 if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ)) {
725 free(ltxq, M_LKPI80211);
726 continue;
727 }
728 IMPROVE("AP/if we support non-STA here too");
729 ltxq->txq.ac = IEEE80211_AC_VO;
730 } else {
731 ltxq->txq.ac = ieee80211e_up_to_ac[tid & 7];
732 }
733 ltxq->seen_dequeue = false;
734 ltxq->stopped = false;
735 ltxq->txq.vif = vif;
736 ltxq->txq.tid = tid;
737 ltxq->txq.sta = sta;
738 TAILQ_ELEM_INIT(ltxq, txq_entry);
739 skb_queue_head_init(<xq->skbq);
740 LKPI_80211_LTXQ_LOCK_INIT(ltxq);
741 sta->txq[tid] = <xq->txq;
742 }
743
744 /* Deflink information. */
745 for (band = 0; band < NUM_NL80211_BANDS; band++) {
746 struct ieee80211_supported_band *supband;
747
748 supband = hw->wiphy->bands[band];
749 if (supband == NULL)
750 continue;
751
752 for (i = 0; i < supband->n_bitrates; i++) {
753 switch (band) {
754 case NL80211_BAND_2GHZ:
755 switch (supband->bitrates[i].bitrate) {
756 case 240: /* 11g only */
757 case 120: /* 11g only */
758 case 110:
759 case 60: /* 11g only */
760 case 55:
761 case 20:
762 case 10:
763 sta->deflink.supp_rates[band] |= BIT(i);
764 break;
765 }
766 break;
767 case NL80211_BAND_5GHZ:
768 switch (supband->bitrates[i].bitrate) {
769 case 240:
770 case 120:
771 case 60:
772 sta->deflink.supp_rates[band] |= BIT(i);
773 break;
774 }
775 break;
776 }
777 }
778 }
779
780 sta->deflink.smps_mode = IEEE80211_SMPS_OFF;
781 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_20;
782 sta->deflink.rx_nss = 1;
783
784 lkpi_sta_sync_from_ni(hw, vif, sta, ni, false);
785
786 IMPROVE("he, eht, bw_320, ... smps_mode, ..");
787
788 /* Link configuration. */
789 IEEE80211_ADDR_COPY(sta->deflink.addr, sta->addr);
790 sta->link[0] = &sta->deflink;
791 for (i = 1; i < nitems(sta->link); i++) {
792 IMPROVE("more links; only link[0] = deflink currently.");
793 }
794 IMPROVE("11be");
795 sta->mlo = false;
796
797 /* Deferred TX path. */
798 LKPI_80211_LSTA_TXQ_LOCK_INIT(lsta);
799 TASK_INIT(&lsta->txq_task, 0, lkpi_80211_txq_task, lsta);
800 mbufq_init(&lsta->txq, 32 * NAPI_POLL_WEIGHT);
801 lsta->txq_ready = true;
802
803 return (lsta);
804
805 cleanup:
806 for (; tid >= 0; tid--) {
807 struct lkpi_txq *ltxq;
808
809 ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
810 LKPI_80211_LTXQ_LOCK_DESTROY(ltxq);
811 free(sta->txq[tid], M_LKPI80211);
812 }
813 free(lsta, M_LKPI80211);
814 return (NULL);
815 }
816
817 static void
lkpi_lsta_free(struct lkpi_sta * lsta,struct ieee80211_node * ni)818 lkpi_lsta_free(struct lkpi_sta *lsta, struct ieee80211_node *ni)
819 {
820 struct mbuf *m;
821
822 if (lsta->added_to_drv)
823 panic("%s: Trying to free an lsta still known to firmware: "
824 "lsta %p ni %p added_to_drv %d\n",
825 __func__, lsta, ni, lsta->added_to_drv);
826
827 /* XXX-BZ free resources, ... */
828 IMPROVE();
829
830 /* Drain sta->txq[] */
831
832 LKPI_80211_LSTA_TXQ_LOCK(lsta);
833 lsta->txq_ready = false;
834 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
835
836 /* Drain taskq, won't be restarted until added_to_drv is set again. */
837 while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0)
838 taskqueue_drain(taskqueue_thread, &lsta->txq_task);
839
840 /* Flush mbufq (make sure to release ni refs!). */
841 m = mbufq_dequeue(&lsta->txq);
842 while (m != NULL) {
843 struct ieee80211_node *nim;
844
845 nim = (struct ieee80211_node *)m->m_pkthdr.rcvif;
846 if (nim != NULL)
847 ieee80211_free_node(nim);
848 m_freem(m);
849 m = mbufq_dequeue(&lsta->txq);
850 }
851 KASSERT(mbufq_empty(&lsta->txq), ("%s: lsta %p has txq len %d != 0\n",
852 __func__, lsta, mbufq_len(&lsta->txq)));
853 LKPI_80211_LSTA_TXQ_LOCK_DESTROY(lsta);
854
855 /* Remove lsta from vif; that is done by the state machine. Should assert it? */
856
857 IMPROVE("Make sure everything is cleaned up.");
858
859 /* Free lsta. */
860 lsta->ni = NULL;
861 ni->ni_drv_data = NULL;
862 free(lsta, M_LKPI80211);
863 }
864
865
866 static enum nl80211_band
lkpi_net80211_chan_to_nl80211_band(struct ieee80211_channel * c)867 lkpi_net80211_chan_to_nl80211_band(struct ieee80211_channel *c)
868 {
869
870 if (IEEE80211_IS_CHAN_2GHZ(c))
871 return (NL80211_BAND_2GHZ);
872 else if (IEEE80211_IS_CHAN_5GHZ(c))
873 return (NL80211_BAND_5GHZ);
874 #ifdef __notyet__
875 else if ()
876 return (NL80211_BAND_6GHZ);
877 else if ()
878 return (NL80211_BAND_60GHZ);
879 else if (IEEE80211_IS_CHAN_GSM(c))
880 return (NL80211_BAND_XXX);
881 #endif
882 else
883 panic("%s: unsupported band. c %p flags %#x\n",
884 __func__, c, c->ic_flags);
885 }
886
887 static uint32_t
lkpi_nl80211_band_to_net80211_band(enum nl80211_band band)888 lkpi_nl80211_band_to_net80211_band(enum nl80211_band band)
889 {
890
891 /* XXX-BZ this is just silly; net80211 is too convoluted. */
892 /* IEEE80211_CHAN_A / _G / .. doesn't really work either. */
893 switch (band) {
894 case NL80211_BAND_2GHZ:
895 return (IEEE80211_CHAN_2GHZ);
896 break;
897 case NL80211_BAND_5GHZ:
898 return (IEEE80211_CHAN_5GHZ);
899 break;
900 case NL80211_BAND_60GHZ:
901 break;
902 case NL80211_BAND_6GHZ:
903 break;
904 default:
905 panic("%s: unsupported band %u\n", __func__, band);
906 break;
907 }
908
909 IMPROVE();
910 return (0x00);
911 }
912
913 #if 0
914 static enum ieee80211_ac_numbers
915 lkpi_ac_net_to_l80211(int ac)
916 {
917
918 switch (ac) {
919 case WME_AC_VO:
920 return (IEEE80211_AC_VO);
921 case WME_AC_VI:
922 return (IEEE80211_AC_VI);
923 case WME_AC_BE:
924 return (IEEE80211_AC_BE);
925 case WME_AC_BK:
926 return (IEEE80211_AC_BK);
927 default:
928 printf("%s: invalid WME_AC_* input: ac = %d\n", __func__, ac);
929 return (IEEE80211_AC_BE);
930 }
931 }
932 #endif
933
934 static enum nl80211_iftype
lkpi_opmode_to_vif_type(enum ieee80211_opmode opmode)935 lkpi_opmode_to_vif_type(enum ieee80211_opmode opmode)
936 {
937
938 switch (opmode) {
939 case IEEE80211_M_IBSS:
940 return (NL80211_IFTYPE_ADHOC);
941 break;
942 case IEEE80211_M_STA:
943 return (NL80211_IFTYPE_STATION);
944 break;
945 case IEEE80211_M_WDS:
946 return (NL80211_IFTYPE_WDS);
947 break;
948 case IEEE80211_M_HOSTAP:
949 return (NL80211_IFTYPE_AP);
950 break;
951 case IEEE80211_M_MONITOR:
952 return (NL80211_IFTYPE_MONITOR);
953 break;
954 case IEEE80211_M_MBSS:
955 return (NL80211_IFTYPE_MESH_POINT);
956 break;
957 case IEEE80211_M_AHDEMO:
958 /* FALLTHROUGH */
959 default:
960 printf("ERROR: %s: unsupported opmode %d\n", __func__, opmode);
961 /* FALLTHROUGH */
962 }
963 return (NL80211_IFTYPE_UNSPECIFIED);
964 }
965
966 #ifdef LKPI_80211_HW_CRYPTO
967 static const char *
lkpi_cipher_suite_to_name(uint32_t wlan_cipher_suite)968 lkpi_cipher_suite_to_name(uint32_t wlan_cipher_suite)
969 {
970 switch (wlan_cipher_suite) {
971 case WLAN_CIPHER_SUITE_WEP40:
972 return ("WEP40");
973 case WLAN_CIPHER_SUITE_WEP104:
974 return ("WEP104");
975 case WLAN_CIPHER_SUITE_TKIP:
976 return ("TKIP");
977 case WLAN_CIPHER_SUITE_CCMP:
978 return ("CCMP");
979 case WLAN_CIPHER_SUITE_CCMP_256:
980 return ("CCMP_256");
981 case WLAN_CIPHER_SUITE_GCMP:
982 return ("GCMP");
983 case WLAN_CIPHER_SUITE_GCMP_256:
984 return ("GCMP_256");
985 case WLAN_CIPHER_SUITE_AES_CMAC:
986 return ("AES_CMAC");
987 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
988 return ("BIP_CMAC_256");
989 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
990 return ("BIP_GMAC_128");
991 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
992 return ("BIP_GMAC_256");
993 default:
994 return ("??");
995 }
996 }
997
998 static uint32_t
lkpi_l80211_to_net80211_cyphers(struct ieee80211com * ic,uint32_t wlan_cipher_suite)999 lkpi_l80211_to_net80211_cyphers(struct ieee80211com *ic,
1000 uint32_t wlan_cipher_suite)
1001 {
1002 switch (wlan_cipher_suite) {
1003 case WLAN_CIPHER_SUITE_WEP40:
1004 return (IEEE80211_CRYPTO_WEP);
1005 case WLAN_CIPHER_SUITE_WEP104:
1006 return (IEEE80211_CRYPTO_WEP);
1007 case WLAN_CIPHER_SUITE_TKIP:
1008 return (IEEE80211_CRYPTO_TKIP);
1009 case WLAN_CIPHER_SUITE_CCMP:
1010 return (IEEE80211_CRYPTO_AES_CCM);
1011 case WLAN_CIPHER_SUITE_CCMP_256:
1012 return (IEEE80211_CRYPTO_AES_CCM_256);
1013 case WLAN_CIPHER_SUITE_GCMP:
1014 return (IEEE80211_CRYPTO_AES_GCM_128);
1015 case WLAN_CIPHER_SUITE_GCMP_256:
1016 return (IEEE80211_CRYPTO_AES_GCM_256);
1017 case WLAN_CIPHER_SUITE_AES_CMAC:
1018 return (IEEE80211_CRYPTO_BIP_CMAC_128);
1019 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
1020 return (IEEE80211_CRYPTO_BIP_CMAC_256);
1021 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
1022 return (IEEE80211_CRYPTO_BIP_GMAC_128);
1023 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
1024 return (IEEE80211_CRYPTO_BIP_GMAC_256);
1025 default:
1026 ic_printf(ic, "%s: unknown WLAN Cipher Suite %#08x | %u (%s)\n",
1027 __func__,
1028 wlan_cipher_suite >> 8, wlan_cipher_suite & 0xff,
1029 lkpi_cipher_suite_to_name(wlan_cipher_suite));
1030 return (0);
1031 }
1032 }
1033
1034 static uint32_t
lkpi_net80211_to_l80211_cipher_suite(uint32_t cipher,uint8_t keylen)1035 lkpi_net80211_to_l80211_cipher_suite(uint32_t cipher, uint8_t keylen)
1036 {
1037
1038 switch (cipher) {
1039 case IEEE80211_CIPHER_WEP:
1040 if (keylen < 8)
1041 return (WLAN_CIPHER_SUITE_WEP40);
1042 else
1043 return (WLAN_CIPHER_SUITE_WEP104);
1044 break;
1045 case IEEE80211_CIPHER_TKIP:
1046 return (WLAN_CIPHER_SUITE_TKIP);
1047 case IEEE80211_CIPHER_AES_CCM:
1048 return (WLAN_CIPHER_SUITE_CCMP);
1049 case IEEE80211_CIPHER_AES_CCM_256:
1050 return (WLAN_CIPHER_SUITE_CCMP_256);
1051 case IEEE80211_CIPHER_AES_GCM_128:
1052 return (WLAN_CIPHER_SUITE_GCMP);
1053 case IEEE80211_CIPHER_AES_GCM_256:
1054 return (WLAN_CIPHER_SUITE_GCMP_256);
1055 case IEEE80211_CIPHER_BIP_CMAC_128:
1056 return (WLAN_CIPHER_SUITE_AES_CMAC);
1057 case IEEE80211_CIPHER_BIP_CMAC_256:
1058 return (WLAN_CIPHER_SUITE_BIP_CMAC_256);
1059 case IEEE80211_CIPHER_BIP_GMAC_128:
1060 return (WLAN_CIPHER_SUITE_BIP_GMAC_128);
1061 case IEEE80211_CIPHER_BIP_GMAC_256:
1062 return (WLAN_CIPHER_SUITE_BIP_GMAC_256);
1063
1064 case IEEE80211_CIPHER_AES_OCB:
1065 case IEEE80211_CIPHER_TKIPMIC:
1066 /*
1067 * TKIP w/ hw MIC support
1068 * (gone wrong; should really be a crypto flag in net80211).
1069 */
1070 case IEEE80211_CIPHER_CKIP:
1071 case IEEE80211_CIPHER_NONE:
1072 printf("%s: unsupported cipher %#010x\n", __func__, cipher);
1073 break;
1074 default:
1075 printf("%s: unknown cipher %#010x\n", __func__, cipher);
1076 };
1077 return (0);
1078 }
1079 #endif
1080
1081 #ifdef __notyet__
1082 static enum ieee80211_sta_state
lkpi_net80211_state_to_sta_state(enum ieee80211_state state)1083 lkpi_net80211_state_to_sta_state(enum ieee80211_state state)
1084 {
1085
1086 /*
1087 * XXX-BZ The net80211 states are "try to ..", the lkpi8011 states are
1088 * "done". Also ASSOC/AUTHORIZED are both "RUN" then?
1089 */
1090 switch (state) {
1091 case IEEE80211_S_INIT:
1092 return (IEEE80211_STA_NOTEXIST);
1093 case IEEE80211_S_SCAN:
1094 return (IEEE80211_STA_NONE);
1095 case IEEE80211_S_AUTH:
1096 return (IEEE80211_STA_AUTH);
1097 case IEEE80211_S_ASSOC:
1098 return (IEEE80211_STA_ASSOC);
1099 case IEEE80211_S_RUN:
1100 return (IEEE80211_STA_AUTHORIZED);
1101 case IEEE80211_S_CAC:
1102 case IEEE80211_S_CSA:
1103 case IEEE80211_S_SLEEP:
1104 default:
1105 UNIMPLEMENTED;
1106 };
1107
1108 return (IEEE80211_STA_NOTEXIST);
1109 }
1110 #endif
1111
1112 static struct linuxkpi_ieee80211_channel *
lkpi_find_lkpi80211_chan(struct lkpi_hw * lhw,struct ieee80211_channel * c)1113 lkpi_find_lkpi80211_chan(struct lkpi_hw *lhw,
1114 struct ieee80211_channel *c)
1115 {
1116 struct ieee80211_hw *hw;
1117 struct linuxkpi_ieee80211_channel *channels;
1118 enum nl80211_band band;
1119 int i, nchans;
1120
1121 hw = LHW_TO_HW(lhw);
1122 band = lkpi_net80211_chan_to_nl80211_band(c);
1123 if (hw->wiphy->bands[band] == NULL)
1124 return (NULL);
1125
1126 nchans = hw->wiphy->bands[band]->n_channels;
1127 if (nchans <= 0)
1128 return (NULL);
1129
1130 channels = hw->wiphy->bands[band]->channels;
1131 for (i = 0; i < nchans; i++) {
1132 if (channels[i].hw_value == c->ic_ieee)
1133 return (&channels[i]);
1134 }
1135
1136 return (NULL);
1137 }
1138
1139 #if 0
1140 static struct linuxkpi_ieee80211_channel *
1141 lkpi_get_lkpi80211_chan(struct ieee80211com *ic, struct ieee80211_node *ni)
1142 {
1143 struct linuxkpi_ieee80211_channel *chan;
1144 struct ieee80211_channel *c;
1145 struct lkpi_hw *lhw;
1146
1147 chan = NULL;
1148 if (ni != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC)
1149 c = ni->ni_chan;
1150 else if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
1151 c = ic->ic_bsschan;
1152 else if (ic->ic_curchan != IEEE80211_CHAN_ANYC)
1153 c = ic->ic_curchan;
1154 else
1155 c = NULL;
1156
1157 if (c != NULL && c != IEEE80211_CHAN_ANYC) {
1158 lhw = ic->ic_softc;
1159 chan = lkpi_find_lkpi80211_chan(lhw, c);
1160 }
1161
1162 return (chan);
1163 }
1164 #endif
1165
1166 struct linuxkpi_ieee80211_channel *
linuxkpi_ieee80211_get_channel(struct wiphy * wiphy,uint32_t freq)1167 linuxkpi_ieee80211_get_channel(struct wiphy *wiphy, uint32_t freq)
1168 {
1169 enum nl80211_band band;
1170
1171 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1172 struct ieee80211_supported_band *supband;
1173 struct linuxkpi_ieee80211_channel *channels;
1174 int i;
1175
1176 supband = wiphy->bands[band];
1177 if (supband == NULL || supband->n_channels == 0)
1178 continue;
1179
1180 channels = supband->channels;
1181 for (i = 0; i < supband->n_channels; i++) {
1182 if (channels[i].center_freq == freq)
1183 return (&channels[i]);
1184 }
1185 }
1186
1187 return (NULL);
1188 }
1189
1190 #ifdef LKPI_80211_HW_CRYPTO
1191 static int
lkpi_sta_del_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct lkpi_sta * lsta)1192 lkpi_sta_del_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1193 struct lkpi_sta *lsta)
1194 {
1195 int error;
1196
1197 if (!lkpi_hwcrypto)
1198 return (0);
1199
1200 lockdep_assert_wiphy(hw->wiphy);
1201 ieee80211_ref_node(lsta->ni);
1202
1203 error = 0;
1204 for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc); keyix++) {
1205 struct ieee80211_key_conf *kc;
1206 int err;
1207
1208 if (lsta->kc[keyix] == NULL)
1209 continue;
1210 kc = lsta->kc[keyix];
1211
1212 #ifdef LINUXKPI_DEBUG_80211
1213 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1214 ic_printf(lsta->ni->ni_ic, "%s: running set_key cmd %d(%s) for "
1215 "sta %6D: keyidx %u hw_key_idx %u flags %b\n",
1216 __func__, DISABLE_KEY, "DISABLE", lsta->sta.addr, ":",
1217 kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
1218 #endif
1219
1220 err = lkpi_80211_mo_set_key(hw, DISABLE_KEY, vif,
1221 LSTA_TO_STA(lsta), kc);
1222 if (err != 0) {
1223 ic_printf(lsta->ni->ni_ic, "%s: set_key cmd %d(%s) for "
1224 "sta %6D failed: %d\n", __func__, DISABLE_KEY,
1225 "DISABLE", lsta->sta.addr, ":", err);
1226 error++;
1227
1228 /*
1229 * If we free the key here we will never be able to get it
1230 * removed from the driver/fw which will likely make us
1231 * crash (firmware).
1232 */
1233 continue;
1234 }
1235 #ifdef LINUXKPI_DEBUG_80211
1236 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1237 ic_printf(lsta->ni->ni_ic, "%s: set_key cmd %d(%s) for "
1238 "sta %6D succeeded: keyidx %u hw_key_idx %u flags %b\n",
1239 __func__, DISABLE_KEY, "DISABLE", lsta->sta.addr, ":",
1240 kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
1241 #endif
1242
1243 lsta->kc[keyix] = NULL;
1244 free(kc, M_LKPI80211);
1245 }
1246 ieee80211_free_node(lsta->ni);
1247 return (error);
1248 }
1249
1250 /* XXX-BZ one day we should replace this iterating over VIFs, or node list? */
1251 /* See also lkpi_sta_del_keys() these days. */
1252 static int
lkpi_iv_key_delete(struct ieee80211vap * vap,const struct ieee80211_key * k)1253 lkpi_iv_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
1254 {
1255 struct ieee80211com *ic;
1256 struct lkpi_hw *lhw;
1257 struct ieee80211_hw *hw;
1258 struct lkpi_vif *lvif;
1259 struct lkpi_sta *lsta;
1260 struct ieee80211_vif *vif;
1261 struct ieee80211_sta *sta;
1262 struct ieee80211_node *ni;
1263 struct ieee80211_key_conf *kc;
1264 int error;
1265
1266 ic = vap->iv_ic;
1267 if (IEEE80211_KEY_UNDEFINED(k)) {
1268 ic_printf(ic, "%s: vap %p key %p is undefined: %p %u\n",
1269 __func__, vap, k, k->wk_cipher, k->wk_keyix);
1270 return (0);
1271 }
1272
1273 if (vap->iv_bss == NULL) {
1274 ic_printf(ic, "%s: iv_bss %p for vap %p is NULL\n",
1275 __func__, vap->iv_bss, vap);
1276 return (0);
1277 }
1278
1279 ni = ieee80211_ref_node(vap->iv_bss);
1280 lsta = ni->ni_drv_data;
1281 if (lsta == NULL) {
1282 ic_printf(ic, "%s: ni %p (%6D) with lsta NULL\n",
1283 __func__, ni, ni->ni_bssid, ":");
1284 ieee80211_free_node(ni);
1285 return (0);
1286 }
1287 sta = LSTA_TO_STA(lsta);
1288
1289 if (lsta->kc[k->wk_keyix] == NULL) {
1290 #ifdef LINUXKPI_DEBUG_80211
1291 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1292 ic_printf(ic, "%s: sta %6D and no key information, "
1293 "keyidx %u wk_macaddr %6D; returning success\n",
1294 __func__, sta->addr, ":",
1295 k->wk_keyix, k->wk_macaddr, ":");
1296 #endif
1297 ieee80211_free_node(ni);
1298 return (1);
1299 }
1300
1301 kc = lsta->kc[k->wk_keyix];
1302 /* Re-check under lock. */
1303 if (kc == NULL) {
1304 #ifdef LINUXKPI_DEBUG_80211
1305 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1306 ic_printf(ic, "%s: sta %6D and key information vanished, "
1307 "returning success\n", __func__, sta->addr, ":");
1308 #endif
1309 error = 1;
1310 goto out;
1311 }
1312
1313 #ifdef LINUXKPI_DEBUG_80211
1314 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1315 ic_printf(ic, "%s: running set_key cmd %d(%s) for sta %6D: "
1316 "keyidx %u hw_key_idx %u flags %b\n", __func__,
1317 DISABLE_KEY, "DISABLE", sta->addr, ":",
1318 kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
1319 #endif
1320
1321 lhw = ic->ic_softc;
1322 hw = LHW_TO_HW(lhw);
1323 lvif = VAP_TO_LVIF(vap);
1324 vif = LVIF_TO_VIF(lvif);
1325 error = lkpi_80211_mo_set_key(hw, DISABLE_KEY, vif, sta, kc);
1326 if (error != 0) {
1327 ic_printf(ic, "%s: set_key cmd %d(%s) for sta %6D failed: %d\n",
1328 __func__, DISABLE_KEY, "DISABLE", sta->addr, ":", error);
1329 error = 0;
1330 goto out;
1331 }
1332
1333 #ifdef LINUXKPI_DEBUG_80211
1334 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1335 ic_printf(ic, "%s: set_key cmd %d(%s) for sta %6D succeeded: "
1336 "keyidx %u hw_key_idx %u flags %b\n", __func__,
1337 DISABLE_KEY, "DISABLE", sta->addr, ":",
1338 kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
1339 #endif
1340 lsta->kc[k->wk_keyix] = NULL;
1341 free(kc, M_LKPI80211);
1342 error = 1;
1343 out:
1344 ieee80211_free_node(ni);
1345 return (error);
1346 }
1347
1348 static int
lkpi_iv_key_set(struct ieee80211vap * vap,const struct ieee80211_key * k)1349 lkpi_iv_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
1350 {
1351 struct ieee80211com *ic;
1352 struct lkpi_hw *lhw;
1353 struct ieee80211_hw *hw;
1354 struct lkpi_vif *lvif;
1355 struct lkpi_sta *lsta;
1356 struct ieee80211_vif *vif;
1357 struct ieee80211_sta *sta;
1358 struct ieee80211_node *ni;
1359 struct ieee80211_key_conf *kc;
1360 uint32_t lcipher;
1361 uint16_t exp_flags;
1362 uint8_t keylen;
1363 int error;
1364
1365 ic = vap->iv_ic;
1366 if (IEEE80211_KEY_UNDEFINED(k)) {
1367 ic_printf(ic, "%s: vap %p key %p is undefined: %p %u\n",
1368 __func__, vap, k, k->wk_cipher, k->wk_keyix);
1369 return (0);
1370 }
1371
1372 if (vap->iv_bss == NULL) {
1373 ic_printf(ic, "%s: iv_bss %p for vap %p is NULL\n",
1374 __func__, vap->iv_bss, vap);
1375 return (0);
1376 }
1377 ni = ieee80211_ref_node(vap->iv_bss);
1378 lsta = ni->ni_drv_data;
1379 if (lsta == NULL) {
1380 ic_printf(ic, "%s: ni %p (%6D) with lsta NULL\n",
1381 __func__, ni, ni->ni_bssid, ":");
1382 ieee80211_free_node(ni);
1383 return (0);
1384 }
1385 sta = LSTA_TO_STA(lsta);
1386
1387 keylen = k->wk_keylen;
1388 lcipher = lkpi_net80211_to_l80211_cipher_suite(
1389 k->wk_cipher->ic_cipher, k->wk_keylen);
1390 switch (lcipher) {
1391 case WLAN_CIPHER_SUITE_CCMP:
1392 break;
1393 case WLAN_CIPHER_SUITE_TKIP:
1394 keylen += 2 * k->wk_cipher->ic_miclen;
1395 break;
1396 default:
1397 ic_printf(ic, "%s: CIPHER SUITE %#x (%s) not supported\n",
1398 __func__, lcipher, lkpi_cipher_suite_to_name(lcipher));
1399 IMPROVE();
1400 ieee80211_free_node(ni);
1401 return (0);
1402 }
1403
1404 if (lsta->kc[k->wk_keyix] != NULL) {
1405 IMPROVE("Still in firmware? Del first. Can we assert this cannot happen?");
1406 ic_printf(ic, "%s: sta %6D found with key information\n",
1407 __func__, sta->addr, ":");
1408 kc = lsta->kc[k->wk_keyix];
1409 lsta->kc[k->wk_keyix] = NULL;
1410 free(kc, M_LKPI80211);
1411 kc = NULL; /* safeguard */
1412 }
1413
1414 kc = malloc(sizeof(*kc) + keylen, M_LKPI80211, M_WAITOK | M_ZERO);
1415 kc->_k = k; /* Save the pointer to net80211. */
1416 kc->cipher = lcipher;
1417 kc->keyidx = k->wk_keyix;
1418 #if 0
1419 kc->hw_key_idx = /* set by hw and needs to be passed for TX */;
1420 #endif
1421 atomic64_set(&kc->tx_pn, k->wk_keytsc);
1422 kc->keylen = k->wk_keylen;
1423 memcpy(kc->key, k->wk_key, k->wk_keylen);
1424
1425 if (k->wk_flags & (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV))
1426 kc->flags |= IEEE80211_KEY_FLAG_PAIRWISE;
1427 if (k->wk_flags & IEEE80211_KEY_GROUP)
1428 kc->flags &= ~IEEE80211_KEY_FLAG_PAIRWISE;
1429
1430 switch (kc->cipher) {
1431 case WLAN_CIPHER_SUITE_CCMP:
1432 kc->iv_len = k->wk_cipher->ic_header;
1433 kc->icv_len = k->wk_cipher->ic_trailer;
1434 break;
1435 case WLAN_CIPHER_SUITE_TKIP:
1436 memcpy(kc->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY, k->wk_txmic, k->wk_cipher->ic_miclen);
1437 memcpy(kc->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, k->wk_rxmic, k->wk_cipher->ic_miclen);
1438 kc->iv_len = k->wk_cipher->ic_header;
1439 kc->icv_len = k->wk_cipher->ic_trailer;
1440 break;
1441 default:
1442 /* currently UNREACH */
1443 IMPROVE();
1444 break;
1445 };
1446 lsta->kc[k->wk_keyix] = kc;
1447
1448 #ifdef LINUXKPI_DEBUG_80211
1449 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1450 ic_printf(ic, "%s: running set_key cmd %d(%s) for sta %6D: "
1451 "kc %p keyidx %u hw_key_idx %u keylen %u flags %b\n", __func__,
1452 SET_KEY, "SET", sta->addr, ":", kc, kc->keyidx, kc->hw_key_idx,
1453 kc->keylen, kc->flags, IEEE80211_KEY_FLAG_BITS);
1454 #endif
1455
1456 lhw = ic->ic_softc;
1457 hw = LHW_TO_HW(lhw);
1458 lvif = VAP_TO_LVIF(vap);
1459 vif = LVIF_TO_VIF(lvif);
1460 error = lkpi_80211_mo_set_key(hw, SET_KEY, vif, sta, kc);
1461 if (error != 0) {
1462 ic_printf(ic, "%s: set_key cmd %d(%s) for sta %6D failed: %d\n",
1463 __func__, SET_KEY, "SET", sta->addr, ":", error);
1464 lsta->kc[k->wk_keyix] = NULL;
1465 free(kc, M_LKPI80211);
1466 ieee80211_free_node(ni);
1467 return (0);
1468 }
1469
1470 #ifdef LINUXKPI_DEBUG_80211
1471 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1472 ic_printf(ic, "%s: set_key cmd %d(%s) for sta %6D succeeded: "
1473 "kc %p keyidx %u hw_key_idx %u flags %b\n", __func__,
1474 SET_KEY, "SET", sta->addr, ":",
1475 kc, kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
1476 #endif
1477
1478 exp_flags = 0;
1479 switch (kc->cipher) {
1480 case WLAN_CIPHER_SUITE_TKIP:
1481 exp_flags = (IEEE80211_KEY_FLAG_PAIRWISE |
1482 IEEE80211_KEY_FLAG_PUT_IV_SPACE |
1483 IEEE80211_KEY_FLAG_GENERATE_MMIC |
1484 IEEE80211_KEY_FLAG_PUT_MIC_SPACE);
1485 #define TKIP_INVAL_COMBINATION \
1486 (IEEE80211_KEY_FLAG_PUT_MIC_SPACE|IEEE80211_KEY_FLAG_GENERATE_MMIC)
1487 if ((kc->flags & TKIP_INVAL_COMBINATION) == TKIP_INVAL_COMBINATION) {
1488 ic_printf(ic, "%s: SET_KEY for %s returned invalid "
1489 "combination %b\n", __func__,
1490 lkpi_cipher_suite_to_name(kc->cipher),
1491 kc->flags, IEEE80211_KEY_FLAG_BITS);
1492 }
1493 #undef TKIP_INVAL_COMBINATION
1494 #ifdef __notyet__
1495 /* Do flags surgery; special see linuxkpi_ieee80211_ifattach(). */
1496 if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) != 0) {
1497 k->wk_flags &= ~(IEEE80211_KEY_NOMICMGT|IEEE80211_KEY_NOMIC);
1498 k->wk_flags |= IEEE80211_KEY_SWMIC;
1499 ic->ic_cryptocaps &= ~IEEE80211_CRYPTO_TKIPMIC
1500 }
1501 #endif
1502 break;
1503 case WLAN_CIPHER_SUITE_CCMP:
1504 exp_flags = (IEEE80211_KEY_FLAG_PAIRWISE |
1505 IEEE80211_KEY_FLAG_PUT_IV_SPACE |
1506 IEEE80211_KEY_FLAG_GENERATE_IV |
1507 IEEE80211_KEY_FLAG_GENERATE_IV_MGMT | /* Only needs IV geeration for MGMT frames. */
1508 IEEE80211_KEY_FLAG_SW_MGMT_TX); /* MFP in software */
1509 break;
1510 }
1511 if ((kc->flags & ~exp_flags) != 0)
1512 ic_printf(ic, "%s: SET_KEY for %s returned unexpected key flags: "
1513 " %#06x & ~%#06x = %b\n", __func__,
1514 lkpi_cipher_suite_to_name(kc->cipher), kc->flags, exp_flags,
1515 (kc->flags & ~exp_flags), IEEE80211_KEY_FLAG_BITS);
1516
1517 #ifdef __notyet__
1518 /* Do flags surgery. */
1519 if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV_MGMT) == 0)
1520 k->wk_flags |= IEEE80211_KEY_NOIVMGT;
1521 if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0)
1522 k->wk_flags |= IEEE80211_KEY_NOIV;
1523 #endif
1524
1525 ieee80211_free_node(ni);
1526 return (1);
1527 }
1528
1529 static void
lkpi_iv_key_update_begin(struct ieee80211vap * vap)1530 lkpi_iv_key_update_begin(struct ieee80211vap *vap)
1531 {
1532 struct ieee80211_node_table *nt;
1533 struct ieee80211com *ic;
1534 struct lkpi_hw *lhw;
1535 struct ieee80211_hw *hw;
1536 struct lkpi_vif *lvif;
1537 struct ieee80211_node *ni;
1538 bool icislocked, ntislocked;
1539
1540 ic = vap->iv_ic;
1541 lhw = ic->ic_softc;
1542 hw = LHW_TO_HW(lhw);
1543 lvif = VAP_TO_LVIF(vap);
1544 nt = &ic->ic_sta;
1545
1546 icislocked = IEEE80211_IS_LOCKED(ic);
1547 ntislocked = IEEE80211_NODE_IS_LOCKED(nt);
1548
1549 #ifdef LINUXKPI_DEBUG_80211
1550 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1551 ic_printf(ic, "%s: tid %d vap %p ic %p %slocked nt %p %slocked "
1552 "lvif ic_unlocked %d nt_unlocked %d\n", __func__,
1553 curthread->td_tid, vap,
1554 ic, icislocked ? "" : "un", nt, ntislocked ? "" : "un",
1555 lvif->ic_unlocked, lvif->nt_unlocked);
1556 #endif
1557
1558 /*
1559 * This is inconsistent net80211 locking to be fixed one day.
1560 */
1561 /* Try to make sure the node does not go away while possibly unlocked. */
1562 ni = NULL;
1563 if (icislocked || ntislocked) {
1564 if (vap->iv_bss != NULL)
1565 ni = ieee80211_ref_node(vap->iv_bss);
1566 }
1567
1568 if (icislocked)
1569 IEEE80211_UNLOCK(ic);
1570 if (ntislocked)
1571 IEEE80211_NODE_UNLOCK(nt);
1572
1573 wiphy_lock(hw->wiphy);
1574
1575 KASSERT(lvif->key_update_iv_bss == NULL, ("%s: key_update_iv_bss not NULL %p",
1576 __func__, lvif->key_update_iv_bss));
1577 lvif->key_update_iv_bss = ni;
1578
1579 /*
1580 * ic/nt_unlocked could be a bool given we are under the lock and there
1581 * must only be a single thread.
1582 * In case anything in the future disturbs the order the refcnt will
1583 * help us catching problems a lot easier.
1584 */
1585 if (icislocked)
1586 refcount_acquire(&lvif->ic_unlocked);
1587 if (ntislocked)
1588 refcount_acquire(&lvif->nt_unlocked);
1589 }
1590
1591 static void
lkpi_iv_key_update_end(struct ieee80211vap * vap)1592 lkpi_iv_key_update_end(struct ieee80211vap *vap)
1593 {
1594 struct ieee80211_node_table *nt;
1595 struct ieee80211com *ic;
1596 struct lkpi_hw *lhw;
1597 struct ieee80211_hw *hw;
1598 struct lkpi_vif *lvif;
1599 bool icislocked, ntislocked;
1600
1601 ic = vap->iv_ic;
1602 lhw = ic->ic_softc;
1603 hw = LHW_TO_HW(lhw);
1604 lvif = VAP_TO_LVIF(vap);
1605 nt = &ic->ic_sta;
1606
1607 icislocked = IEEE80211_IS_LOCKED(ic);
1608 MPASS(!icislocked);
1609 ntislocked = IEEE80211_NODE_IS_LOCKED(nt);
1610 MPASS(!ntislocked);
1611
1612 #ifdef LINUXKPI_DEBUG_80211
1613 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
1614 ic_printf(ic, "%s: tid %d vap %p ic %p %slocked nt %p %slocked "
1615 "lvif ic_unlocked %d nt_unlocked %d\n", __func__,
1616 curthread->td_tid, vap,
1617 ic, icislocked ? "" : "un", nt, ntislocked ? "" : "un",
1618 lvif->ic_unlocked, lvif->nt_unlocked);
1619 #endif
1620
1621 /*
1622 * Check under lock; see comment in lkpi_iv_key_update_begin().
1623 * In case the refcnt gets out of sync locking in net80211 will
1624 * quickly barf as well (trying to unlock a lock not held).
1625 */
1626 icislocked = refcount_release_if_last(&lvif->ic_unlocked);
1627 ntislocked = refcount_release_if_last(&lvif->nt_unlocked);
1628
1629 if (lvif->key_update_iv_bss != NULL) {
1630 ieee80211_free_node(lvif->key_update_iv_bss);
1631 lvif->key_update_iv_bss = NULL;
1632 }
1633
1634 wiphy_unlock(hw->wiphy);
1635
1636 /*
1637 * This is inconsistent net80211 locking to be fixed one day.
1638 * ic before nt to avoid a LOR.
1639 */
1640 if (icislocked)
1641 IEEE80211_LOCK(ic);
1642 if (ntislocked)
1643 IEEE80211_NODE_LOCK(nt);
1644 }
1645 #endif
1646
1647 static u_int
lkpi_ic_update_mcast_copy(void * arg,struct sockaddr_dl * sdl,u_int cnt)1648 lkpi_ic_update_mcast_copy(void *arg, struct sockaddr_dl *sdl, u_int cnt)
1649 {
1650 struct netdev_hw_addr_list *mc_list;
1651 struct netdev_hw_addr *addr;
1652
1653 KASSERT(arg != NULL && sdl != NULL, ("%s: arg %p sdl %p cnt %u\n",
1654 __func__, arg, sdl, cnt));
1655
1656 mc_list = arg;
1657 /* If it is on the list already skip it. */
1658 netdev_hw_addr_list_for_each(addr, mc_list) {
1659 if (!memcmp(addr->addr, LLADDR(sdl), sdl->sdl_alen))
1660 return (0);
1661 }
1662
1663 addr = malloc(sizeof(*addr), M_LKPI80211, M_NOWAIT | M_ZERO);
1664 if (addr == NULL)
1665 return (0);
1666
1667 INIT_LIST_HEAD(&addr->addr_list);
1668 memcpy(addr->addr, LLADDR(sdl), sdl->sdl_alen);
1669 /* XXX this should be a netdev function? */
1670 list_add(&addr->addr_list, &mc_list->addr_list);
1671 mc_list->count++;
1672
1673 #ifdef LINUXKPI_DEBUG_80211
1674 if (linuxkpi_debug_80211 & D80211_TRACE)
1675 printf("%s:%d: mc_list count %d: added %6D\n",
1676 __func__, __LINE__, mc_list->count, addr->addr, ":");
1677 #endif
1678
1679 return (1);
1680 }
1681
1682 static void
lkpi_update_mcast_filter(struct ieee80211com * ic,bool force)1683 lkpi_update_mcast_filter(struct ieee80211com *ic, bool force)
1684 {
1685 struct lkpi_hw *lhw;
1686 struct ieee80211_hw *hw;
1687 struct netdev_hw_addr_list mc_list;
1688 struct list_head *le, *next;
1689 struct netdev_hw_addr *addr;
1690 struct ieee80211vap *vap;
1691 u64 mc;
1692 unsigned int changed_flags, total_flags;
1693
1694 lhw = ic->ic_softc;
1695
1696 if (lhw->ops->prepare_multicast == NULL ||
1697 lhw->ops->configure_filter == NULL)
1698 return;
1699
1700 if (!lhw->update_mc && !force)
1701 return;
1702
1703 changed_flags = total_flags = 0;
1704 mc_list.count = 0;
1705 INIT_LIST_HEAD(&mc_list.addr_list);
1706 if (ic->ic_allmulti == 0) {
1707 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1708 if_foreach_llmaddr(vap->iv_ifp,
1709 lkpi_ic_update_mcast_copy, &mc_list);
1710 } else {
1711 changed_flags |= FIF_ALLMULTI;
1712 }
1713
1714 hw = LHW_TO_HW(lhw);
1715 mc = lkpi_80211_mo_prepare_multicast(hw, &mc_list);
1716 /*
1717 * XXX-BZ make sure to get this sorted what is a change,
1718 * what gets all set; what was already set?
1719 */
1720 total_flags = changed_flags;
1721 lkpi_80211_mo_configure_filter(hw, changed_flags, &total_flags, mc);
1722
1723 #ifdef LINUXKPI_DEBUG_80211
1724 if (linuxkpi_debug_80211 & D80211_TRACE)
1725 printf("%s: changed_flags %#06x count %d total_flags %#010x\n",
1726 __func__, changed_flags, mc_list.count, total_flags);
1727 #endif
1728
1729 if (mc_list.count != 0) {
1730 list_for_each_safe(le, next, &mc_list.addr_list) {
1731 addr = list_entry(le, struct netdev_hw_addr, addr_list);
1732 free(addr, M_LKPI80211);
1733 mc_list.count--;
1734 }
1735 }
1736 KASSERT(mc_list.count == 0, ("%s: mc_list %p count %d != 0\n",
1737 __func__, &mc_list, mc_list.count));
1738 }
1739
1740 static enum ieee80211_bss_changed
lkpi_update_dtim_tsf(struct ieee80211_vif * vif,struct ieee80211_node * ni,struct ieee80211vap * vap,const char * _f,int _l)1741 lkpi_update_dtim_tsf(struct ieee80211_vif *vif, struct ieee80211_node *ni,
1742 struct ieee80211vap *vap, const char *_f, int _l)
1743 {
1744 enum ieee80211_bss_changed bss_changed;
1745
1746 bss_changed = 0;
1747
1748 #ifdef LINUXKPI_DEBUG_80211
1749 if (linuxkpi_debug_80211 & D80211_TRACE)
1750 printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u "
1751 "dtim_period %u sync_dtim_count %u sync_tsf %ju "
1752 "sync_device_ts %u bss_changed %#010jx\n",
1753 __func__, __LINE__, _f, _l,
1754 vif->cfg.assoc, vif->cfg.aid,
1755 vif->bss_conf.beacon_int, vif->bss_conf.dtim_period,
1756 vif->bss_conf.sync_dtim_count,
1757 (uintmax_t)vif->bss_conf.sync_tsf,
1758 vif->bss_conf.sync_device_ts,
1759 (uintmax_t)bss_changed);
1760 #endif
1761
1762 if (vif->bss_conf.beacon_int != ni->ni_intval) {
1763 vif->bss_conf.beacon_int = ni->ni_intval;
1764 /* iwlwifi FW bug workaround; iwl_mvm_mac_sta_state. */
1765 if (vif->bss_conf.beacon_int < 16)
1766 vif->bss_conf.beacon_int = 16;
1767 bss_changed |= BSS_CHANGED_BEACON_INT;
1768 }
1769 if (vif->bss_conf.dtim_period != vap->iv_dtim_period &&
1770 vap->iv_dtim_period > 0) {
1771 vif->bss_conf.dtim_period = vap->iv_dtim_period;
1772 bss_changed |= BSS_CHANGED_BEACON_INFO;
1773 }
1774
1775 vif->bss_conf.sync_dtim_count = vap->iv_dtim_count;
1776 vif->bss_conf.sync_tsf = le64toh(ni->ni_tstamp.tsf);
1777 /* vif->bss_conf.sync_device_ts = set in linuxkpi_ieee80211_rx. */
1778
1779 #ifdef LINUXKPI_DEBUG_80211
1780 if (linuxkpi_debug_80211 & D80211_TRACE)
1781 printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u "
1782 "dtim_period %u sync_dtim_count %u sync_tsf %ju "
1783 "sync_device_ts %u bss_changed %#010jx\n",
1784 __func__, __LINE__, _f, _l,
1785 vif->cfg.assoc, vif->cfg.aid,
1786 vif->bss_conf.beacon_int, vif->bss_conf.dtim_period,
1787 vif->bss_conf.sync_dtim_count,
1788 (uintmax_t)vif->bss_conf.sync_tsf,
1789 vif->bss_conf.sync_device_ts,
1790 (uintmax_t)bss_changed);
1791 #endif
1792
1793 return (bss_changed);
1794 }
1795
1796 static void
lkpi_stop_hw_scan(struct lkpi_hw * lhw,struct ieee80211_vif * vif)1797 lkpi_stop_hw_scan(struct lkpi_hw *lhw, struct ieee80211_vif *vif)
1798 {
1799 struct ieee80211_hw *hw;
1800 int error;
1801 bool cancel;
1802
1803 LKPI_80211_LHW_SCAN_LOCK(lhw);
1804 cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
1805 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
1806 if (!cancel)
1807 return;
1808
1809 hw = LHW_TO_HW(lhw);
1810
1811 IEEE80211_UNLOCK(lhw->ic);
1812 wiphy_lock(hw->wiphy);
1813 /* Need to cancel the scan. */
1814 lkpi_80211_mo_cancel_hw_scan(hw, vif);
1815 wiphy_unlock(hw->wiphy);
1816
1817 /* Need to make sure we see ieee80211_scan_completed. */
1818 LKPI_80211_LHW_SCAN_LOCK(lhw);
1819 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0)
1820 error = msleep(lhw, &lhw->scan_mtx, 0, "lhwscanstop", hz/2);
1821 cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
1822 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
1823
1824 IEEE80211_LOCK(lhw->ic);
1825
1826 if (cancel)
1827 ic_printf(lhw->ic, "%s: failed to cancel scan: %d (%p, %p)\n",
1828 __func__, error, lhw, vif);
1829 }
1830
1831 static void
lkpi_hw_conf_idle(struct ieee80211_hw * hw,bool new)1832 lkpi_hw_conf_idle(struct ieee80211_hw *hw, bool new)
1833 {
1834 struct lkpi_hw *lhw;
1835 int error;
1836 bool old;
1837
1838 old = hw->conf.flags & IEEE80211_CONF_IDLE;
1839 if (old == new)
1840 return;
1841
1842 hw->conf.flags ^= IEEE80211_CONF_IDLE;
1843 error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_IDLE);
1844 if (error != 0 && error != EOPNOTSUPP) {
1845 lhw = HW_TO_LHW(hw);
1846 ic_printf(lhw->ic, "ERROR: %s: config %#0x returned %d\n",
1847 __func__, IEEE80211_CONF_CHANGE_IDLE, error);
1848 }
1849 }
1850
1851 static enum ieee80211_bss_changed
lkpi_disassoc(struct ieee80211_sta * sta,struct ieee80211_vif * vif,struct lkpi_hw * lhw)1852 lkpi_disassoc(struct ieee80211_sta *sta, struct ieee80211_vif *vif,
1853 struct lkpi_hw *lhw)
1854 {
1855 enum ieee80211_bss_changed changed;
1856
1857 changed = 0;
1858 sta->aid = 0;
1859 if (vif->cfg.assoc) {
1860
1861 lhw->update_mc = true;
1862 lkpi_update_mcast_filter(lhw->ic, true);
1863
1864 vif->cfg.assoc = false;
1865 vif->cfg.aid = 0;
1866 changed |= BSS_CHANGED_ASSOC;
1867 IMPROVE();
1868
1869 /*
1870 * Executing the bss_info_changed(BSS_CHANGED_ASSOC) with
1871 * assoc = false right away here will remove the sta from
1872 * firmware for iwlwifi.
1873 * We no longer do this but only return the BSS_CHNAGED value.
1874 * The caller is responsible for removing the sta gong to
1875 * IEEE80211_STA_NOTEXIST and then executing the
1876 * bss_info_changed() update.
1877 * See lkpi_sta_run_to_init() for more detailed comment.
1878 */
1879 }
1880
1881 return (changed);
1882 }
1883
1884 static void
lkpi_wake_tx_queues(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool dequeue_seen,bool no_emptyq)1885 lkpi_wake_tx_queues(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
1886 bool dequeue_seen, bool no_emptyq)
1887 {
1888 struct lkpi_txq *ltxq;
1889 int tid;
1890 bool ltxq_empty;
1891
1892 /* Wake up all queues to know they are allocated in the driver. */
1893 for (tid = 0; tid < nitems(sta->txq); tid++) {
1894
1895 if (tid == IEEE80211_NUM_TIDS) {
1896 IMPROVE("station specific?");
1897 if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ))
1898 continue;
1899 } else if (tid >= hw->queues)
1900 continue;
1901
1902 if (sta->txq[tid] == NULL)
1903 continue;
1904
1905 ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
1906 if (dequeue_seen && !ltxq->seen_dequeue)
1907 continue;
1908
1909 LKPI_80211_LTXQ_LOCK(ltxq);
1910 ltxq_empty = skb_queue_empty(<xq->skbq);
1911 LKPI_80211_LTXQ_UNLOCK(ltxq);
1912 if (no_emptyq && ltxq_empty)
1913 continue;
1914
1915 lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid]);
1916 }
1917 }
1918
1919 /*
1920 * On the way down from RUN -> ASSOC -> AUTH we may send a DISASSOC or DEAUTH
1921 * packet. The problem is that the state machine functions tend to hold the
1922 * LHW lock which will prevent lkpi_80211_txq_tx_one() from sending the packet.
1923 * We call this after dropping the ic lock and before acquiring the LHW lock.
1924 * we make sure no further packets are queued and if they are queued the task
1925 * will finish or be cancelled. At the end if a packet is left we manually
1926 * send it. scan_to_auth() would re-enable sending if the lsta would be
1927 * re-used.
1928 */
1929 static void
lkpi_80211_flush_tx(struct lkpi_hw * lhw,struct lkpi_sta * lsta)1930 lkpi_80211_flush_tx(struct lkpi_hw *lhw, struct lkpi_sta *lsta)
1931 {
1932 struct ieee80211_hw *hw;
1933 struct mbufq mq;
1934 struct mbuf *m;
1935 int len;
1936
1937 /* There is no lockdep_assert_not_held_wiphy(). */
1938 hw = LHW_TO_HW(lhw);
1939 lockdep_assert_not_held(&hw->wiphy->mtx);
1940
1941 /* Do not accept any new packets until scan_to_auth or lsta_free(). */
1942 LKPI_80211_LSTA_TXQ_LOCK(lsta);
1943 lsta->txq_ready = false;
1944 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
1945
1946 while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0)
1947 taskqueue_drain(taskqueue_thread, &lsta->txq_task);
1948
1949 LKPI_80211_LSTA_TXQ_LOCK(lsta);
1950 len = mbufq_len(&lsta->txq);
1951 if (len <= 0) {
1952 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
1953 return;
1954 }
1955
1956 mbufq_init(&mq, IFQ_MAXLEN);
1957 mbufq_concat(&mq, &lsta->txq);
1958 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
1959
1960 m = mbufq_dequeue(&mq);
1961 while (m != NULL) {
1962 lkpi_80211_txq_tx_one(lsta, m);
1963 m = mbufq_dequeue(&mq);
1964 }
1965 }
1966
1967
1968 static void
lkpi_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1969 lkpi_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1970 {
1971 struct ieee80211_chanctx_conf *chanctx_conf;
1972 struct lkpi_chanctx *lchanctx;
1973
1974 chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf,
1975 lockdep_is_held(&hw->wiphy->mtx));
1976
1977 if (chanctx_conf == NULL)
1978 return;
1979
1980 /* Remove vif context. */
1981 lkpi_80211_mo_unassign_vif_chanctx(hw, vif, &vif->bss_conf, chanctx_conf);
1982
1983 lkpi_hw_conf_idle(hw, true);
1984
1985 /* Remove chan ctx. */
1986 lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
1987
1988 /* Cleanup. */
1989 rcu_assign_pointer(vif->bss_conf.chanctx_conf, NULL);
1990 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
1991 list_del(&lchanctx->entry);
1992 free(lchanctx, M_LKPI80211);
1993 }
1994
1995
1996 /* -------------------------------------------------------------------------- */
1997
1998 static int
lkpi_sta_state_do_nada(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1999 lkpi_sta_state_do_nada(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2000 {
2001
2002 return (0);
2003 }
2004
2005 /* lkpi_iv_newstate() handles the stop scan case generally. */
2006 #define lkpi_sta_scan_to_init(_v, _n, _a) lkpi_sta_state_do_nada(_v, _n, _a)
2007
2008 static int
lkpi_sta_scan_to_auth(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2009 lkpi_sta_scan_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2010 {
2011 struct linuxkpi_ieee80211_channel *chan;
2012 struct lkpi_chanctx *lchanctx;
2013 struct ieee80211_chanctx_conf *chanctx_conf;
2014 struct lkpi_hw *lhw;
2015 struct ieee80211_hw *hw;
2016 struct lkpi_vif *lvif;
2017 struct ieee80211_vif *vif;
2018 struct ieee80211_node *ni;
2019 struct lkpi_sta *lsta;
2020 enum ieee80211_bss_changed bss_changed;
2021 struct ieee80211_prep_tx_info prep_tx_info;
2022 uint32_t changed;
2023 int error;
2024
2025 /*
2026 * In here we use vap->iv_bss until lvif->lvif_bss is set.
2027 * For all later (STATE >= AUTH) functions we need to use the lvif
2028 * cache which will be tracked even through (*iv_update_bss)().
2029 */
2030
2031 if (vap->iv_bss == NULL) {
2032 ic_printf(vap->iv_ic, "%s: no iv_bss for vap %p\n", __func__, vap);
2033 return (EINVAL);
2034 }
2035 /*
2036 * Keep the ni alive locally. In theory (and practice) iv_bss can change
2037 * once we unlock here. This is due to net80211 allowing state changes
2038 * and new join1() despite having an active node as well as due to
2039 * the fact that the iv_bss can be swapped under the hood in (*iv_update_bss).
2040 */
2041 ni = ieee80211_ref_node(vap->iv_bss);
2042 if (ni->ni_chan == NULL || ni->ni_chan == IEEE80211_CHAN_ANYC) {
2043 ic_printf(vap->iv_ic, "%s: no channel set for iv_bss ni %p "
2044 "on vap %p\n", __func__, ni, vap);
2045 ieee80211_free_node(ni); /* Error handling for the local ni. */
2046 return (EINVAL);
2047 }
2048
2049 lhw = vap->iv_ic->ic_softc;
2050 chan = lkpi_find_lkpi80211_chan(lhw, ni->ni_chan);
2051 if (chan == NULL) {
2052 ic_printf(vap->iv_ic, "%s: failed to get LKPI channel from "
2053 "iv_bss ni %p on vap %p\n", __func__, ni, vap);
2054 ieee80211_free_node(ni); /* Error handling for the local ni. */
2055 return (ESRCH);
2056 }
2057
2058 hw = LHW_TO_HW(lhw);
2059 lvif = VAP_TO_LVIF(vap);
2060 vif = LVIF_TO_VIF(lvif);
2061
2062 LKPI_80211_LVIF_LOCK(lvif);
2063 /* XXX-BZ KASSERT later? */
2064 if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL) {
2065 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2066 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2067 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2068 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2069 lvif->lvif_bss_synched);
2070 LKPI_80211_LVIF_UNLOCK(lvif);
2071 ieee80211_free_node(ni); /* Error handling for the local ni. */
2072 return (EBUSY);
2073 }
2074 LKPI_80211_LVIF_UNLOCK(lvif);
2075
2076 IEEE80211_UNLOCK(vap->iv_ic);
2077 wiphy_lock(hw->wiphy);
2078
2079 /* Add chanctx (or if exists, change it). */
2080 chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf,
2081 lockdep_is_held(&hw->wiphy->mtx));
2082 if (chanctx_conf != NULL) {
2083 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
2084 IMPROVE("diff changes for changed, working on live copy, rcu");
2085 } else {
2086 /* Keep separate alloc as in Linux this is rcu managed? */
2087 lchanctx = malloc(sizeof(*lchanctx) + hw->chanctx_data_size,
2088 M_LKPI80211, M_WAITOK | M_ZERO);
2089 chanctx_conf = &lchanctx->chanctx_conf;
2090 }
2091
2092 chanctx_conf->rx_chains_static = 1;
2093 chanctx_conf->rx_chains_dynamic = 1;
2094 chanctx_conf->radar_enabled =
2095 (chan->flags & IEEE80211_CHAN_RADAR) ? true : false;
2096 chanctx_conf->def.chan = chan;
2097 chanctx_conf->def.width = NL80211_CHAN_WIDTH_20_NOHT;
2098 chanctx_conf->def.center_freq1 = ieee80211_get_channel_center_freq1(ni->ni_chan);
2099 chanctx_conf->def.center_freq2 = ieee80211_get_channel_center_freq2(ni->ni_chan);
2100 IMPROVE("Check vht_cap from band not just chan?");
2101 KASSERT(ni->ni_chan != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC,
2102 ("%s:%d: ni %p ni_chan %p\n", __func__, __LINE__, ni, ni->ni_chan));
2103
2104 #ifdef LKPI_80211_HT
2105 if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
2106 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan))
2107 chanctx_conf->def.width = NL80211_CHAN_WIDTH_40;
2108 else
2109 chanctx_conf->def.width = NL80211_CHAN_WIDTH_20;
2110 }
2111 #endif
2112 #ifdef LKPI_80211_VHT
2113 if (IEEE80211_IS_CHAN_VHT_5GHZ(ni->ni_chan)) {
2114 #ifdef __notyet__
2115 if (IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan))
2116 chanctx_conf->def.width = NL80211_CHAN_WIDTH_80P80;
2117 else if (IEEE80211_IS_CHAN_VHT160(ni->ni_chan))
2118 chanctx_conf->def.width = NL80211_CHAN_WIDTH_160;
2119 else
2120 #endif
2121 if (IEEE80211_IS_CHAN_VHT80(ni->ni_chan))
2122 chanctx_conf->def.width = NL80211_CHAN_WIDTH_80;
2123 }
2124 #endif
2125 chanctx_conf->rx_chains_dynamic = lkpi_get_max_rx_chains(ni);
2126 /* Responder ... */
2127 #if 0
2128 chanctx_conf->min_def.chan = chanctx_conf->def.chan;
2129 chanctx_conf->min_def.width = NL80211_CHAN_WIDTH_20_NOHT;
2130 #ifdef LKPI_80211_HT
2131 if (IEEE80211_IS_CHAN_HT(ni->ni_chan) || IEEE80211_IS_CHAN_VHT(ni->ni_chan))
2132 chanctx_conf->min_def.width = NL80211_CHAN_WIDTH_20;
2133 #endif
2134 chanctx_conf->min_def.center_freq1 = chanctx_conf->def.center_freq1;
2135 chanctx_conf->min_def.center_freq2 = chanctx_conf->def.center_freq2;
2136 #else
2137 chanctx_conf->min_def = chanctx_conf->def;
2138 #endif
2139
2140 /* Set bss info (bss_info_changed). */
2141 bss_changed = 0;
2142 vif->bss_conf.bssid = ni->ni_bssid;
2143 bss_changed |= BSS_CHANGED_BSSID;
2144 vif->bss_conf.txpower = ni->ni_txpower;
2145 bss_changed |= BSS_CHANGED_TXPOWER;
2146 vif->cfg.idle = false;
2147 bss_changed |= BSS_CHANGED_IDLE;
2148
2149 /* vif->bss_conf.basic_rates ? Where exactly? */
2150
2151 /* Should almost assert it is this. */
2152 vif->cfg.assoc = false;
2153 vif->cfg.aid = 0;
2154
2155 bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
2156
2157 error = 0;
2158 if (vif->bss_conf.chanctx_conf == chanctx_conf) {
2159 changed = IEEE80211_CHANCTX_CHANGE_MIN_WIDTH;
2160 changed |= IEEE80211_CHANCTX_CHANGE_RADAR;
2161 changed |= IEEE80211_CHANCTX_CHANGE_RX_CHAINS;
2162 changed |= IEEE80211_CHANCTX_CHANGE_WIDTH;
2163 lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed);
2164 } else {
2165 error = lkpi_80211_mo_add_chanctx(hw, chanctx_conf);
2166 if (error == 0 || error == EOPNOTSUPP) {
2167 vif->bss_conf.chanreq.oper.chan = chanctx_conf->def.chan;
2168 vif->bss_conf.chanreq.oper.width = chanctx_conf->def.width;
2169 vif->bss_conf.chanreq.oper.center_freq1 =
2170 chanctx_conf->def.center_freq1;
2171 vif->bss_conf.chanreq.oper.center_freq2 =
2172 chanctx_conf->def.center_freq2;
2173 } else {
2174 ic_printf(vap->iv_ic, "%s:%d: mo_add_chanctx "
2175 "failed: %d\n", __func__, __LINE__, error);
2176 goto out;
2177 }
2178
2179 list_add_rcu(&lchanctx->entry, &lhw->lchanctx_list);
2180 rcu_assign_pointer(vif->bss_conf.chanctx_conf, chanctx_conf);
2181
2182 /* Assign vif chanctx. */
2183 if (error == 0)
2184 error = lkpi_80211_mo_assign_vif_chanctx(hw, vif,
2185 &vif->bss_conf, chanctx_conf);
2186 if (error == EOPNOTSUPP)
2187 error = 0;
2188 if (error != 0) {
2189 ic_printf(vap->iv_ic, "%s:%d: mo_assign_vif_chanctx "
2190 "failed: %d\n", __func__, __LINE__, error);
2191 lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
2192 rcu_assign_pointer(vif->bss_conf.chanctx_conf, NULL);
2193 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
2194 list_del(&lchanctx->entry);
2195 free(lchanctx, M_LKPI80211);
2196 goto out;
2197 }
2198 }
2199 IMPROVE("update radiotap chan fields too");
2200
2201 /* RATES */
2202 IMPROVE("bss info: not all needs to come now and rates are missing");
2203 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
2204
2205 /*
2206 * Given ni and lsta are 1:1 from alloc to free we can assert that
2207 * ni always has lsta data attach despite net80211 node swapping
2208 * under the hoods.
2209 */
2210 KASSERT(ni->ni_drv_data != NULL, ("%s: ni %p ni_drv_data %p\n",
2211 __func__, ni, ni->ni_drv_data));
2212 lsta = ni->ni_drv_data;
2213
2214 /*
2215 * Make sure in case the sta did not change and we re-add it,
2216 * that we can tx again.
2217 */
2218 LKPI_80211_LSTA_TXQ_LOCK(lsta);
2219 lsta->txq_ready = true;
2220 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
2221
2222 /* Insert the [l]sta into the list of known stations. */
2223 list_add_tail(&lsta->lsta_list, &lvif->lsta_list);
2224
2225 /* Add (or adjust) sta and change state (from NOTEXIST) to NONE. */
2226 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2227 KASSERT(lsta->state == IEEE80211_STA_NOTEXIST, ("%s: lsta %p state not "
2228 "NOTEXIST: %#x\n", __func__, lsta, lsta->state));
2229 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
2230 if (error != 0) {
2231 IMPROVE("do we need to undo the chan ctx?");
2232 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
2233 "failed: %d\n", __func__, __LINE__, error);
2234 goto out;
2235 }
2236 #if 0
2237 lsta->added_to_drv = true; /* mo manages. */
2238 #endif
2239
2240 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2241
2242 #if 0
2243 /*
2244 * Wakeup all queues now that sta is there so we have as much time to
2245 * possibly prepare the queue in the driver to be ready for the 1st
2246 * packet; lkpi_80211_txq_tx_one() still has a workaround as there
2247 * is no guarantee or way to check.
2248 * XXX-BZ and by now we know that this does not work on all drivers
2249 * for all queues.
2250 */
2251 lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, false);
2252 #endif
2253
2254 /* Start mgd_prepare_tx. */
2255 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2256 prep_tx_info.duration = PREP_TX_INFO_DURATION;
2257 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
2258 lsta->in_mgd = true;
2259
2260 /*
2261 * What is going to happen next:
2262 * - <twiddle> .. we should end up in "auth_to_assoc"
2263 * - event_callback
2264 * - update sta_state (NONE to AUTH)
2265 * - mgd_complete_tx
2266 * (ideally we'd do that on a callback for something else ...)
2267 */
2268
2269 wiphy_unlock(hw->wiphy);
2270 IEEE80211_LOCK(vap->iv_ic);
2271
2272 LKPI_80211_LVIF_LOCK(lvif);
2273 /* Re-check given (*iv_update_bss) could have happened while we were unlocked. */
2274 if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL ||
2275 lsta->ni != vap->iv_bss)
2276 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2277 "lvif_bss->ni %p synched %d, ni %p lsta %p\n", __func__, __LINE__,
2278 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2279 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2280 lvif->lvif_bss_synched, ni, lsta);
2281
2282 /*
2283 * Reference the "ni" for caching the lsta/ni in lvif->lvif_bss.
2284 * Given we cache lsta we use lsta->ni instead of ni here (even though
2285 * lsta->ni == ni) to be distinct from the rest of the code where we do
2286 * assume that ni == vap->iv_bss which it may or may not be.
2287 * So do NOT use iv_bss here anymore as that may have diverged from our
2288 * function local ni already while ic was unlocked and would lead to
2289 * inconsistencies. Go and see if we lost a race and do not update
2290 * lvif_bss_synched in that case.
2291 */
2292 ieee80211_ref_node(lsta->ni);
2293 lvif->lvif_bss = lsta;
2294 if (lsta->ni == vap->iv_bss) {
2295 lvif->lvif_bss_synched = true;
2296 } else {
2297 /* Set to un-synched no matter what. */
2298 lvif->lvif_bss_synched = false;
2299 /*
2300 * We do not error as someone has to take us down.
2301 * If we are followed by a 2nd, new net80211::join1() going to
2302 * AUTH lkpi_sta_a_to_a() will error, lkpi_sta_auth_to_{scan,init}()
2303 * will take the lvif->lvif_bss node down eventually.
2304 * What happens with the vap->iv_bss node will entirely be up
2305 * to net80211 as we never used the node beyond alloc()/free()
2306 * and we do not hold an extra reference for that anymore given
2307 * ni : lsta == 1:1.
2308 */
2309 }
2310 LKPI_80211_LVIF_UNLOCK(lvif);
2311 goto out_relocked;
2312
2313 out:
2314 wiphy_unlock(hw->wiphy);
2315 IEEE80211_LOCK(vap->iv_ic);
2316 out_relocked:
2317 /*
2318 * Release the reference that kept the ni stable locally
2319 * during the work of this function.
2320 */
2321 if (ni != NULL)
2322 ieee80211_free_node(ni);
2323 return (error);
2324 }
2325
2326 static int
lkpi_sta_auth_to_scan(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2327 lkpi_sta_auth_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2328 {
2329 struct lkpi_hw *lhw;
2330 struct ieee80211_hw *hw;
2331 struct lkpi_vif *lvif;
2332 struct ieee80211_vif *vif;
2333 struct ieee80211_node *ni;
2334 struct lkpi_sta *lsta;
2335 struct ieee80211_sta *sta;
2336 struct ieee80211_prep_tx_info prep_tx_info;
2337 int error;
2338
2339 lhw = vap->iv_ic->ic_softc;
2340 hw = LHW_TO_HW(lhw);
2341 lvif = VAP_TO_LVIF(vap);
2342 vif = LVIF_TO_VIF(lvif);
2343
2344 LKPI_80211_LVIF_LOCK(lvif);
2345 #ifdef LINUXKPI_DEBUG_80211
2346 /* XXX-BZ KASSERT later; state going down so no action. */
2347 if (lvif->lvif_bss == NULL)
2348 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2349 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2350 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2351 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2352 lvif->lvif_bss_synched);
2353 #endif
2354
2355 lsta = lvif->lvif_bss;
2356 LKPI_80211_LVIF_UNLOCK(lvif);
2357 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
2358 "lvif %p vap %p\n", __func__,
2359 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
2360 ni = lsta->ni; /* Reference held for lvif_bss. */
2361 sta = LSTA_TO_STA(lsta);
2362
2363 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2364
2365 IEEE80211_UNLOCK(vap->iv_ic);
2366 wiphy_lock(hw->wiphy);
2367
2368 /* flush, drop. */
2369 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
2370
2371 /* Wake tx queues to get packet(s) out. */
2372 lkpi_wake_tx_queues(hw, sta, false, true);
2373
2374 /* flush, no drop */
2375 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
2376
2377 /* End mgd_complete_tx. */
2378 if (lsta->in_mgd) {
2379 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2380 prep_tx_info.success = false;
2381 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2382 lsta->in_mgd = false;
2383 }
2384
2385 /* sync_rx_queues */
2386 lkpi_80211_mo_sync_rx_queues(hw);
2387
2388 /* sta_pre_rcu_remove */
2389 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
2390
2391 /* Take the station down. */
2392
2393 /* Adjust sta and change state (from NONE) to NOTEXIST. */
2394 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2395 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
2396 "NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
2397 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
2398 if (error != 0) {
2399 IMPROVE("do we need to undo the chan ctx?");
2400 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
2401 "failed: %d\n", __func__, __LINE__, error);
2402 goto out;
2403 }
2404 #if 0
2405 lsta->added_to_drv = false; /* mo manages. */
2406 #endif
2407
2408 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2409
2410 LKPI_80211_LVIF_LOCK(lvif);
2411 /* Remove ni reference for this cache of lsta. */
2412 lvif->lvif_bss = NULL;
2413 lvif->lvif_bss_synched = false;
2414 LKPI_80211_LVIF_UNLOCK(lvif);
2415 lkpi_lsta_remove(lsta, lvif);
2416 /*
2417 * The very last release the reference on the ni for the ni/lsta on
2418 * lvif->lvif_bss. Upon return from this both ni and lsta are invalid
2419 * and potentially freed.
2420 */
2421 ieee80211_free_node(ni);
2422
2423 /* conf_tx */
2424
2425 lkpi_remove_chanctx(hw, vif);
2426
2427 out:
2428 wiphy_unlock(hw->wiphy);
2429 IEEE80211_LOCK(vap->iv_ic);
2430 return (error);
2431 }
2432
2433 static int
lkpi_sta_auth_to_init(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2434 lkpi_sta_auth_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2435 {
2436 int error;
2437
2438 error = lkpi_sta_auth_to_scan(vap, nstate, arg);
2439 if (error == 0)
2440 error = lkpi_sta_scan_to_init(vap, nstate, arg);
2441 return (error);
2442 }
2443
2444 static int
lkpi_sta_auth_to_assoc(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2445 lkpi_sta_auth_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2446 {
2447 struct lkpi_hw *lhw;
2448 struct ieee80211_hw *hw;
2449 struct lkpi_vif *lvif;
2450 struct ieee80211_vif *vif;
2451 struct lkpi_sta *lsta;
2452 struct ieee80211_prep_tx_info prep_tx_info;
2453 int error;
2454
2455 lhw = vap->iv_ic->ic_softc;
2456 hw = LHW_TO_HW(lhw);
2457 lvif = VAP_TO_LVIF(vap);
2458 vif = LVIF_TO_VIF(lvif);
2459
2460 IEEE80211_UNLOCK(vap->iv_ic);
2461 wiphy_lock(hw->wiphy);
2462
2463 LKPI_80211_LVIF_LOCK(lvif);
2464 /* XXX-BZ KASSERT later? */
2465 if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
2466 #ifdef LINUXKPI_DEBUG_80211
2467 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2468 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2469 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2470 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2471 lvif->lvif_bss_synched);
2472 #endif
2473 error = ENOTRECOVERABLE;
2474 LKPI_80211_LVIF_UNLOCK(lvif);
2475 goto out;
2476 }
2477 lsta = lvif->lvif_bss;
2478 LKPI_80211_LVIF_UNLOCK(lvif);
2479
2480 KASSERT(lsta != NULL, ("%s: lsta %p\n", __func__, lsta));
2481
2482 /* Finish auth. */
2483 IMPROVE("event callback");
2484
2485 /* Update sta_state (NONE to AUTH). */
2486 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
2487 "NONE: %#x\n", __func__, lsta, lsta->state));
2488 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
2489 if (error != 0) {
2490 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
2491 "failed: %d\n", __func__, __LINE__, error);
2492 goto out;
2493 }
2494
2495 /* End mgd_complete_tx. */
2496 if (lsta->in_mgd) {
2497 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2498 prep_tx_info.success = true;
2499 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2500 lsta->in_mgd = false;
2501 }
2502
2503 /* Now start assoc. */
2504
2505 /* Start mgd_prepare_tx. */
2506 if (!lsta->in_mgd) {
2507 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2508 prep_tx_info.duration = PREP_TX_INFO_DURATION;
2509 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
2510 lsta->in_mgd = true;
2511 }
2512
2513 /* Wake tx queue to get packet out. */
2514 lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, true);
2515
2516 /*
2517 * <twiddle> .. we end up in "assoc_to_run"
2518 * - update sta_state (AUTH to ASSOC)
2519 * - conf_tx [all]
2520 * - bss_info_changed (assoc, aid, ssid, ..)
2521 * - change_chanctx (if needed)
2522 * - event_callback
2523 * - mgd_complete_tx
2524 */
2525
2526 out:
2527 wiphy_unlock(hw->wiphy);
2528 IEEE80211_LOCK(vap->iv_ic);
2529 return (error);
2530 }
2531
2532 /* auth_to_auth, assoc_to_assoc. */
2533 static int
lkpi_sta_a_to_a(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2534 lkpi_sta_a_to_a(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2535 {
2536 struct lkpi_hw *lhw;
2537 struct ieee80211_hw *hw;
2538 struct lkpi_vif *lvif;
2539 struct ieee80211_vif *vif;
2540 struct lkpi_sta *lsta;
2541 struct ieee80211_prep_tx_info prep_tx_info;
2542 int error;
2543
2544 lhw = vap->iv_ic->ic_softc;
2545 hw = LHW_TO_HW(lhw);
2546 lvif = VAP_TO_LVIF(vap);
2547 vif = LVIF_TO_VIF(lvif);
2548
2549 IEEE80211_UNLOCK(vap->iv_ic);
2550 wiphy_lock(hw->wiphy);
2551
2552 LKPI_80211_LVIF_LOCK(lvif);
2553 /* XXX-BZ KASSERT later? */
2554 if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
2555 #ifdef LINUXKPI_DEBUG_80211
2556 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2557 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2558 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2559 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2560 lvif->lvif_bss_synched);
2561 #endif
2562 LKPI_80211_LVIF_UNLOCK(lvif);
2563 error = ENOTRECOVERABLE;
2564 goto out;
2565 }
2566 lsta = lvif->lvif_bss;
2567 LKPI_80211_LVIF_UNLOCK(lvif);
2568
2569 KASSERT(lsta != NULL, ("%s: lsta %p! lvif %p vap %p\n", __func__,
2570 lsta, lvif, vap));
2571
2572 IMPROVE("event callback?");
2573
2574 /* End mgd_complete_tx. */
2575 if (lsta->in_mgd) {
2576 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2577 prep_tx_info.success = false;
2578 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2579 lsta->in_mgd = false;
2580 }
2581
2582 /* Now start assoc. */
2583
2584 /* Start mgd_prepare_tx. */
2585 if (!lsta->in_mgd) {
2586 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2587 prep_tx_info.duration = PREP_TX_INFO_DURATION;
2588 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
2589 lsta->in_mgd = true;
2590 }
2591
2592 error = 0;
2593 out:
2594 wiphy_unlock(hw->wiphy);
2595 IEEE80211_LOCK(vap->iv_ic);
2596
2597 return (error);
2598 }
2599
2600 static int
_lkpi_sta_assoc_to_down(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2601 _lkpi_sta_assoc_to_down(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2602 {
2603 struct lkpi_hw *lhw;
2604 struct ieee80211_hw *hw;
2605 struct lkpi_vif *lvif;
2606 struct ieee80211_vif *vif;
2607 struct ieee80211_node *ni;
2608 struct lkpi_sta *lsta;
2609 struct ieee80211_sta *sta;
2610 struct ieee80211_prep_tx_info prep_tx_info;
2611 enum ieee80211_bss_changed bss_changed;
2612 int error;
2613
2614 lhw = vap->iv_ic->ic_softc;
2615 hw = LHW_TO_HW(lhw);
2616 lvif = VAP_TO_LVIF(vap);
2617 vif = LVIF_TO_VIF(lvif);
2618
2619 IEEE80211_UNLOCK(vap->iv_ic);
2620 wiphy_lock(hw->wiphy);
2621
2622 LKPI_80211_LVIF_LOCK(lvif);
2623 #ifdef LINUXKPI_DEBUG_80211
2624 /* XXX-BZ KASSERT later; state going down so no action. */
2625 if (lvif->lvif_bss == NULL)
2626 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2627 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2628 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2629 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2630 lvif->lvif_bss_synched);
2631 #endif
2632 lsta = lvif->lvif_bss;
2633 LKPI_80211_LVIF_UNLOCK(lvif);
2634 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
2635 "lvif %p vap %p\n", __func__,
2636 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
2637
2638 ni = lsta->ni; /* Reference held for lvif_bss. */
2639 sta = LSTA_TO_STA(lsta);
2640
2641 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2642
2643 /* flush, drop. */
2644 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
2645
2646 IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
2647 if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
2648 !lsta->in_mgd) {
2649 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2650 prep_tx_info.duration = PREP_TX_INFO_DURATION;
2651 prep_tx_info.was_assoc = true;
2652 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
2653 lsta->in_mgd = true;
2654 }
2655
2656 wiphy_unlock(hw->wiphy);
2657 IEEE80211_LOCK(vap->iv_ic);
2658
2659 /* Call iv_newstate first so we get potential DEAUTH packet out. */
2660 error = lvif->iv_newstate(vap, nstate, arg);
2661 if (error != 0) {
2662 ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
2663 "failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
2664 goto outni;
2665 }
2666
2667 IEEE80211_UNLOCK(vap->iv_ic);
2668
2669 /* Ensure the packets get out. */
2670 lkpi_80211_flush_tx(lhw, lsta);
2671
2672 wiphy_lock(hw->wiphy);
2673
2674 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2675
2676 /* Wake tx queues to get packet(s) out. */
2677 lkpi_wake_tx_queues(hw, sta, false, true);
2678
2679 /* flush, no drop */
2680 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
2681
2682 /* End mgd_complete_tx. */
2683 if (lsta->in_mgd) {
2684 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2685 prep_tx_info.success = false;
2686 prep_tx_info.was_assoc = true;
2687 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2688 lsta->in_mgd = false;
2689 }
2690
2691 /* sync_rx_queues */
2692 lkpi_80211_mo_sync_rx_queues(hw);
2693
2694 /* sta_pre_rcu_remove */
2695 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
2696
2697 /* Take the station down. */
2698
2699 /* Update sta and change state (from AUTH) to NONE. */
2700 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2701 KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
2702 "AUTH: %#x\n", __func__, lsta, lsta->state));
2703 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
2704 if (error != 0) {
2705 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
2706 "failed: %d\n", __func__, __LINE__, error);
2707 goto out;
2708 }
2709
2710 /* See comment in lkpi_sta_run_to_init(). */
2711 bss_changed = 0;
2712 bss_changed |= lkpi_disassoc(sta, vif, lhw);
2713
2714 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2715
2716 /* Adjust sta and change state (from NONE) to NOTEXIST. */
2717 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2718 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
2719 "NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
2720 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
2721 if (error != 0) {
2722 IMPROVE("do we need to undo the chan ctx?");
2723 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
2724 "failed: %d\n", __func__, __LINE__, error);
2725 goto out;
2726 }
2727
2728 lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* sta no longer save to use. */
2729
2730 IMPROVE("Any bss_info changes to announce?");
2731 vif->bss_conf.qos = 0;
2732 bss_changed |= BSS_CHANGED_QOS;
2733 vif->cfg.ssid_len = 0;
2734 memset(vif->cfg.ssid, '\0', sizeof(vif->cfg.ssid));
2735 bss_changed |= BSS_CHANGED_BSSID;
2736 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
2737
2738 LKPI_80211_LVIF_LOCK(lvif);
2739 /* Remove ni reference for this cache of lsta. */
2740 lvif->lvif_bss = NULL;
2741 lvif->lvif_bss_synched = false;
2742 LKPI_80211_LVIF_UNLOCK(lvif);
2743 lkpi_lsta_remove(lsta, lvif);
2744 /*
2745 * The very last release the reference on the ni for the ni/lsta on
2746 * lvif->lvif_bss. Upon return from this both ni and lsta are invalid
2747 * and potentially freed.
2748 */
2749 ieee80211_free_node(ni);
2750
2751 /* conf_tx */
2752
2753 lkpi_remove_chanctx(hw, vif);
2754
2755 error = EALREADY;
2756 out:
2757 wiphy_unlock(hw->wiphy);
2758 IEEE80211_LOCK(vap->iv_ic);
2759 outni:
2760 return (error);
2761 }
2762
2763 static int
lkpi_sta_assoc_to_auth(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2764 lkpi_sta_assoc_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2765 {
2766 int error;
2767
2768 error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
2769 if (error != 0 && error != EALREADY)
2770 return (error);
2771
2772 /* At this point iv_bss is long a new node! */
2773
2774 error |= lkpi_sta_scan_to_auth(vap, nstate, 0);
2775 return (error);
2776 }
2777
2778 static int
lkpi_sta_assoc_to_scan(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2779 lkpi_sta_assoc_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2780 {
2781 int error;
2782
2783 error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
2784 return (error);
2785 }
2786
2787 static int
lkpi_sta_assoc_to_init(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2788 lkpi_sta_assoc_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2789 {
2790 int error;
2791
2792 error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
2793 return (error);
2794 }
2795
2796 static int
lkpi_sta_assoc_to_run(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2797 lkpi_sta_assoc_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2798 {
2799 struct lkpi_hw *lhw;
2800 struct ieee80211_hw *hw;
2801 struct lkpi_vif *lvif;
2802 struct ieee80211_vif *vif;
2803 struct ieee80211_node *ni;
2804 struct lkpi_sta *lsta;
2805 struct ieee80211_sta *sta;
2806 struct ieee80211_prep_tx_info prep_tx_info;
2807 enum ieee80211_bss_changed bss_changed;
2808 int error;
2809
2810 lhw = vap->iv_ic->ic_softc;
2811 hw = LHW_TO_HW(lhw);
2812 lvif = VAP_TO_LVIF(vap);
2813 vif = LVIF_TO_VIF(lvif);
2814
2815 IEEE80211_UNLOCK(vap->iv_ic);
2816 wiphy_lock(hw->wiphy);
2817
2818 LKPI_80211_LVIF_LOCK(lvif);
2819 /* XXX-BZ KASSERT later? */
2820 if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
2821 #ifdef LINUXKPI_DEBUG_80211
2822 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2823 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2824 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2825 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2826 lvif->lvif_bss_synched);
2827 #endif
2828 LKPI_80211_LVIF_UNLOCK(lvif);
2829 error = ENOTRECOVERABLE;
2830 goto out;
2831 }
2832 lsta = lvif->lvif_bss;
2833 LKPI_80211_LVIF_UNLOCK(lvif);
2834 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
2835 "lvif %p vap %p\n", __func__,
2836 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
2837
2838 ni = lsta->ni; /* Reference held for lvif_bss. */
2839
2840 IMPROVE("ponder some of this moved to ic_newassoc, scan_assoc_success, "
2841 "and to lesser extend ieee80211_notify_node_join");
2842
2843 /* Finish assoc. */
2844 /* Update sta_state (AUTH to ASSOC) and set aid. */
2845 KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
2846 "AUTH: %#x\n", __func__, lsta, lsta->state));
2847 sta = LSTA_TO_STA(lsta);
2848 sta->aid = IEEE80211_NODE_AID(ni);
2849 #ifdef LKPI_80211_WME
2850 if (vap->iv_flags & IEEE80211_F_WME)
2851 sta->wme = true;
2852 #endif
2853 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
2854 if (error != 0) {
2855 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
2856 "failed: %d\n", __func__, __LINE__, error);
2857 goto out;
2858 }
2859
2860 IMPROVE("wme / conf_tx [all]");
2861
2862 /* Update bss info (bss_info_changed) (assoc, aid, ..). */
2863 bss_changed = 0;
2864 #ifdef LKPI_80211_WME
2865 bss_changed |= lkpi_wme_update(lhw, vap, true);
2866 #endif
2867 if (!vif->cfg.assoc || vif->cfg.aid != IEEE80211_NODE_AID(ni)) {
2868 vif->cfg.assoc = true;
2869 vif->cfg.aid = IEEE80211_NODE_AID(ni);
2870 bss_changed |= BSS_CHANGED_ASSOC;
2871 }
2872 /* We set SSID but this is not BSSID! */
2873 vif->cfg.ssid_len = ni->ni_esslen;
2874 memcpy(vif->cfg.ssid, ni->ni_essid, ni->ni_esslen);
2875 if ((vap->iv_flags & IEEE80211_F_SHPREAMBLE) !=
2876 vif->bss_conf.use_short_preamble) {
2877 vif->bss_conf.use_short_preamble ^= 1;
2878 /* bss_changed |= BSS_CHANGED_??? */
2879 }
2880 if ((vap->iv_flags & IEEE80211_F_SHSLOT) !=
2881 vif->bss_conf.use_short_slot) {
2882 vif->bss_conf.use_short_slot ^= 1;
2883 /* bss_changed |= BSS_CHANGED_??? */
2884 }
2885 if ((ni->ni_flags & IEEE80211_NODE_QOS) !=
2886 vif->bss_conf.qos) {
2887 vif->bss_conf.qos ^= 1;
2888 bss_changed |= BSS_CHANGED_QOS;
2889 }
2890
2891 bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
2892 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
2893
2894 /* - change_chanctx (if needed)
2895 * - event_callback
2896 */
2897
2898 /* End mgd_complete_tx. */
2899 if (lsta->in_mgd) {
2900 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2901 prep_tx_info.success = true;
2902 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2903 lsta->in_mgd = false;
2904 }
2905
2906 lkpi_hw_conf_idle(hw, false);
2907
2908 /*
2909 * And then:
2910 * - (more packets)?
2911 * - set_key
2912 * - set_default_unicast_key
2913 * - set_key (?)
2914 * - ipv6_addr_change (?)
2915 */
2916 /* Prepare_multicast && configure_filter. */
2917 lhw->update_mc = true;
2918 lkpi_update_mcast_filter(vap->iv_ic, true);
2919
2920 if (!ieee80211_node_is_authorized(ni)) {
2921 IMPROVE("net80211 does not consider node authorized");
2922 }
2923
2924 sta->deflink.rx_nss = MAX(1, sta->deflink.rx_nss);
2925 IMPROVE("Is this the right spot, has net80211 done all updates already?");
2926 lkpi_sta_sync_from_ni(hw, vif, sta, ni, true);
2927
2928 /* Update sta_state (ASSOC to AUTHORIZED). */
2929 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2930 KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
2931 "ASSOC: %#x\n", __func__, lsta, lsta->state));
2932 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTHORIZED);
2933 if (error != 0) {
2934 IMPROVE("undo some changes?");
2935 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTHORIZED) "
2936 "failed: %d\n", __func__, __LINE__, error);
2937 goto out;
2938 }
2939
2940 /* - drv_config (?)
2941 * - bss_info_changed
2942 * - set_rekey_data (?)
2943 *
2944 * And now we should be passing packets.
2945 */
2946 IMPROVE("Need that bssid setting, and the keys");
2947
2948 bss_changed = 0;
2949 bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
2950 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
2951
2952 out:
2953 wiphy_unlock(hw->wiphy);
2954 IEEE80211_LOCK(vap->iv_ic);
2955 return (error);
2956 }
2957
2958 static int
lkpi_sta_auth_to_run(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2959 lkpi_sta_auth_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2960 {
2961 int error;
2962
2963 error = lkpi_sta_auth_to_assoc(vap, nstate, arg);
2964 if (error == 0)
2965 error = lkpi_sta_assoc_to_run(vap, nstate, arg);
2966 return (error);
2967 }
2968
2969 static int
lkpi_sta_run_to_assoc(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2970 lkpi_sta_run_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2971 {
2972 struct lkpi_hw *lhw;
2973 struct ieee80211_hw *hw;
2974 struct lkpi_vif *lvif;
2975 struct ieee80211_vif *vif;
2976 struct ieee80211_node *ni;
2977 struct lkpi_sta *lsta;
2978 struct ieee80211_sta *sta;
2979 struct ieee80211_prep_tx_info prep_tx_info;
2980 #if 0
2981 enum ieee80211_bss_changed bss_changed;
2982 #endif
2983 int error;
2984
2985 lhw = vap->iv_ic->ic_softc;
2986 hw = LHW_TO_HW(lhw);
2987 lvif = VAP_TO_LVIF(vap);
2988 vif = LVIF_TO_VIF(lvif);
2989
2990 LKPI_80211_LVIF_LOCK(lvif);
2991 #ifdef LINUXKPI_DEBUG_80211
2992 /* XXX-BZ KASSERT later; state going down so no action. */
2993 if (lvif->lvif_bss == NULL)
2994 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2995 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2996 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2997 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2998 lvif->lvif_bss_synched);
2999 #endif
3000 lsta = lvif->lvif_bss;
3001 LKPI_80211_LVIF_UNLOCK(lvif);
3002 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
3003 "lvif %p vap %p\n", __func__,
3004 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
3005
3006 ni = lsta->ni; /* Reference held for lvif_bss. */
3007 sta = LSTA_TO_STA(lsta);
3008
3009 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3010
3011 IEEE80211_UNLOCK(vap->iv_ic);
3012 wiphy_lock(hw->wiphy);
3013
3014 /* flush, drop. */
3015 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
3016
3017 IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
3018 if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
3019 !lsta->in_mgd) {
3020 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
3021 prep_tx_info.duration = PREP_TX_INFO_DURATION;
3022 prep_tx_info.was_assoc = true;
3023 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
3024 lsta->in_mgd = true;
3025 }
3026
3027 wiphy_unlock(hw->wiphy);
3028 IEEE80211_LOCK(vap->iv_ic);
3029
3030 /* Call iv_newstate first so we get potential DISASSOC packet out. */
3031 error = lvif->iv_newstate(vap, nstate, arg);
3032 if (error != 0) {
3033 ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
3034 "failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
3035 goto outni;
3036 }
3037
3038 IEEE80211_UNLOCK(vap->iv_ic);
3039
3040 /* Ensure the packets get out. */
3041 lkpi_80211_flush_tx(lhw, lsta);
3042
3043 wiphy_lock(hw->wiphy);
3044
3045 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3046
3047 /* Wake tx queues to get packet(s) out. */
3048 lkpi_wake_tx_queues(hw, sta, false, true);
3049
3050 /* flush, no drop */
3051 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
3052
3053 /* End mgd_complete_tx. */
3054 if (lsta->in_mgd) {
3055 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
3056 prep_tx_info.success = false;
3057 prep_tx_info.was_assoc = true;
3058 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
3059 lsta->in_mgd = false;
3060 }
3061
3062 #if 0
3063 /* sync_rx_queues */
3064 lkpi_80211_mo_sync_rx_queues(hw);
3065
3066 /* sta_pre_rcu_remove */
3067 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
3068 #endif
3069
3070 /* Take the station down. */
3071
3072 /* Adjust sta and change state (from AUTHORIZED) to ASSOC. */
3073 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
3074 KASSERT(lsta->state == IEEE80211_STA_AUTHORIZED, ("%s: lsta %p state not "
3075 "AUTHORIZED: %#x\n", __func__, lsta, lsta->state));
3076 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
3077 if (error != 0) {
3078 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
3079 "failed: %d\n", __func__, __LINE__, error);
3080 goto out;
3081 }
3082
3083 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3084
3085 #ifdef LKPI_80211_HW_CRYPTO
3086 if (lkpi_hwcrypto) {
3087 error = lkpi_sta_del_keys(hw, vif, lsta);
3088 if (error != 0) {
3089 ic_printf(vap->iv_ic, "%s:%d: lkpi_sta_del_keys "
3090 "failed: %d\n", __func__, __LINE__, error);
3091 /*
3092 * Either drv/fw will crash or cleanup itself,
3093 * otherwise net80211 will delete the keys (at a
3094 * less appropriate time).
3095 */
3096 /* goto out; */
3097 }
3098 }
3099 #endif
3100
3101 /* Update sta_state (ASSOC to AUTH). */
3102 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
3103 KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
3104 "ASSOC: %#x\n", __func__, lsta, lsta->state));
3105 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
3106 if (error != 0) {
3107 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
3108 "failed: %d\n", __func__, __LINE__, error);
3109 goto out;
3110 }
3111
3112 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3113
3114 #if 0
3115 /* Update bss info (bss_info_changed) (assoc, aid, ..). */
3116 lkpi_disassoc(sta, vif, lhw);
3117 #endif
3118
3119 error = EALREADY;
3120 out:
3121 wiphy_unlock(hw->wiphy);
3122 IEEE80211_LOCK(vap->iv_ic);
3123 outni:
3124 return (error);
3125 }
3126
3127 static int
lkpi_sta_run_to_init(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)3128 lkpi_sta_run_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
3129 {
3130 struct lkpi_hw *lhw;
3131 struct ieee80211_hw *hw;
3132 struct lkpi_vif *lvif;
3133 struct ieee80211_vif *vif;
3134 struct ieee80211_node *ni;
3135 struct lkpi_sta *lsta;
3136 struct ieee80211_sta *sta;
3137 struct ieee80211_prep_tx_info prep_tx_info;
3138 enum ieee80211_bss_changed bss_changed;
3139 int error;
3140
3141 lhw = vap->iv_ic->ic_softc;
3142 hw = LHW_TO_HW(lhw);
3143 lvif = VAP_TO_LVIF(vap);
3144 vif = LVIF_TO_VIF(lvif);
3145
3146 IEEE80211_UNLOCK(vap->iv_ic);
3147 wiphy_lock(hw->wiphy);
3148
3149 LKPI_80211_LVIF_LOCK(lvif);
3150 #ifdef LINUXKPI_DEBUG_80211
3151 /* XXX-BZ KASSERT later; state going down so no action. */
3152 if (lvif->lvif_bss == NULL)
3153 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
3154 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
3155 lvif, vap, vap->iv_bss, lvif->lvif_bss,
3156 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
3157 lvif->lvif_bss_synched);
3158 #endif
3159 lsta = lvif->lvif_bss;
3160 LKPI_80211_LVIF_UNLOCK(lvif);
3161 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
3162 "lvif %p vap %p\n", __func__,
3163 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
3164
3165 ni = lsta->ni; /* Reference held for lvif_bss. */
3166 sta = LSTA_TO_STA(lsta);
3167
3168 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3169
3170 /* flush, drop. */
3171 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
3172
3173 IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
3174 if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
3175 !lsta->in_mgd) {
3176 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
3177 prep_tx_info.duration = PREP_TX_INFO_DURATION;
3178 prep_tx_info.was_assoc = true;
3179 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
3180 lsta->in_mgd = true;
3181 }
3182
3183 wiphy_unlock(hw->wiphy);
3184 IEEE80211_LOCK(vap->iv_ic);
3185
3186 /* Call iv_newstate first so we get potential DISASSOC packet out. */
3187 error = lvif->iv_newstate(vap, nstate, arg);
3188 if (error != 0) {
3189 ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
3190 "failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
3191 goto outni;
3192 }
3193
3194 IEEE80211_UNLOCK(vap->iv_ic);
3195
3196 /* Ensure the packets get out. */
3197 lkpi_80211_flush_tx(lhw, lsta);
3198
3199 wiphy_lock(hw->wiphy);
3200
3201 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3202
3203 /* Wake tx queues to get packet(s) out. */
3204 lkpi_wake_tx_queues(hw, sta, false, true);
3205
3206 /* flush, no drop */
3207 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
3208
3209 /* End mgd_complete_tx. */
3210 if (lsta->in_mgd) {
3211 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
3212 prep_tx_info.success = false;
3213 prep_tx_info.was_assoc = true;
3214 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
3215 lsta->in_mgd = false;
3216 }
3217
3218 /* sync_rx_queues */
3219 lkpi_80211_mo_sync_rx_queues(hw);
3220
3221 /* sta_pre_rcu_remove */
3222 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
3223
3224 /* Take the station down. */
3225
3226 /* Adjust sta and change state (from AUTHORIZED) to ASSOC. */
3227 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
3228 KASSERT(lsta->state == IEEE80211_STA_AUTHORIZED, ("%s: lsta %p state not "
3229 "AUTHORIZED: %#x\n", __func__, lsta, lsta->state));
3230 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
3231 if (error != 0) {
3232 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
3233 "failed: %d\n", __func__, __LINE__, error);
3234 goto out;
3235 }
3236
3237 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3238
3239 #ifdef LKPI_80211_HW_CRYPTO
3240 if (lkpi_hwcrypto) {
3241 error = lkpi_sta_del_keys(hw, vif, lsta);
3242 if (error != 0) {
3243 ic_printf(vap->iv_ic, "%s:%d: lkpi_sta_del_keys "
3244 "failed: %d\n", __func__, __LINE__, error);
3245 /*
3246 * Either drv/fw will crash or cleanup itself,
3247 * otherwise net80211 will delete the keys (at a
3248 * less appropriate time).
3249 */
3250 /* goto out; */
3251 }
3252 }
3253 #endif
3254
3255 /* Update sta_state (ASSOC to AUTH). */
3256 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
3257 KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
3258 "ASSOC: %#x\n", __func__, lsta, lsta->state));
3259 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
3260 if (error != 0) {
3261 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
3262 "failed: %d\n", __func__, __LINE__, error);
3263 goto out;
3264 }
3265
3266 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3267
3268 /* Update sta and change state (from AUTH) to NONE. */
3269 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
3270 KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
3271 "AUTH: %#x\n", __func__, lsta, lsta->state));
3272 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
3273 if (error != 0) {
3274 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
3275 "failed: %d\n", __func__, __LINE__, error);
3276 goto out;
3277 }
3278
3279 bss_changed = 0;
3280 /*
3281 * Start updating bss info (bss_info_changed) (assoc, aid, ..).
3282 *
3283 * One would expect this to happen when going off AUTHORIZED.
3284 * See comment there; removes the sta from fw if not careful
3285 * (bss_info_changed() change is executed right away).
3286 *
3287 * We need to do this now, before sta changes to IEEE80211_STA_NOTEXIST
3288 * as otherwise drivers (iwlwifi at least) will silently not remove
3289 * the sta from the firmware and when we will add a new one trigger
3290 * a fw assert.
3291 *
3292 * The order which works best so far avoiding early removal or silent
3293 * non-removal seems to be (for iwlwifi::mld-mac80211.c cases;
3294 * the iwlwifi:mac80211.c case still to be tested):
3295 * 1) lkpi_disassoc(): set vif->cfg.assoc = false (aid=0 side effect here)
3296 * 2) call the last sta_state update -> IEEE80211_STA_NOTEXIST
3297 * (removes the sta given assoc is false)
3298 * 3) add the remaining BSS_CHANGED changes and call bss_info_changed()
3299 * 4) call unassign_vif_chanctx
3300 * 5) call lkpi_hw_conf_idle
3301 * 6) call remove_chanctx
3302 */
3303 bss_changed |= lkpi_disassoc(sta, vif, lhw);
3304
3305 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
3306
3307 /* Adjust sta and change state (from NONE) to NOTEXIST. */
3308 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
3309 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
3310 "NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
3311 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
3312 if (error != 0) {
3313 IMPROVE("do we need to undo the chan ctx?");
3314 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
3315 "failed: %d\n", __func__, __LINE__, error);
3316 goto out;
3317 }
3318
3319 lkpi_lsta_remove(lsta, lvif);
3320
3321 lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* sta no longer save to use. */
3322
3323 IMPROVE("Any bss_info changes to announce?");
3324 vif->bss_conf.qos = 0;
3325 bss_changed |= BSS_CHANGED_QOS;
3326 vif->cfg.ssid_len = 0;
3327 memset(vif->cfg.ssid, '\0', sizeof(vif->cfg.ssid));
3328 bss_changed |= BSS_CHANGED_BSSID;
3329 vif->bss_conf.use_short_preamble = false;
3330 vif->bss_conf.qos = false;
3331 /* XXX BSS_CHANGED_???? */
3332 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
3333
3334 LKPI_80211_LVIF_LOCK(lvif);
3335 /* Remove ni reference for this cache of lsta. */
3336 lvif->lvif_bss = NULL;
3337 lvif->lvif_bss_synched = false;
3338 LKPI_80211_LVIF_UNLOCK(lvif);
3339 /*
3340 * The very last release the reference on the ni for the ni/lsta on
3341 * lvif->lvif_bss. Upon return from this both ni and lsta are invalid
3342 * and potentially freed.
3343 */
3344 ieee80211_free_node(ni);
3345
3346 /* conf_tx */
3347
3348 lkpi_remove_chanctx(hw, vif);
3349
3350 error = EALREADY;
3351 out:
3352 wiphy_unlock(hw->wiphy);
3353 IEEE80211_LOCK(vap->iv_ic);
3354 outni:
3355 return (error);
3356 }
3357
3358 static int
lkpi_sta_run_to_scan(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)3359 lkpi_sta_run_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
3360 {
3361
3362 return (lkpi_sta_run_to_init(vap, nstate, arg));
3363 }
3364
3365 static int
lkpi_sta_run_to_auth(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)3366 lkpi_sta_run_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
3367 {
3368 int error;
3369
3370 error = lkpi_sta_run_to_init(vap, nstate, arg);
3371 if (error != 0 && error != EALREADY)
3372 return (error);
3373
3374 /* At this point iv_bss is long a new node! */
3375
3376 error |= lkpi_sta_scan_to_auth(vap, nstate, 0);
3377 return (error);
3378 }
3379
3380 /* -------------------------------------------------------------------------- */
3381
3382 /*
3383 * The matches the documented state changes in net80211::sta_newstate().
3384 * XXX (1) without CSA and SLEEP yet, * XXX (2) not all unhandled cases
3385 * there are "invalid" (so there is a room for failure here).
3386 */
3387 struct fsm_state {
3388 /* INIT, SCAN, AUTH, ASSOC, CAC, RUN, CSA, SLEEP */
3389 enum ieee80211_state ostate;
3390 enum ieee80211_state nstate;
3391 int (*handler)(struct ieee80211vap *, enum ieee80211_state, int);
3392 } sta_state_fsm[] = {
3393 { IEEE80211_S_INIT, IEEE80211_S_INIT, lkpi_sta_state_do_nada },
3394 { IEEE80211_S_SCAN, IEEE80211_S_INIT, lkpi_sta_state_do_nada }, /* scan_to_init */
3395 { IEEE80211_S_AUTH, IEEE80211_S_INIT, lkpi_sta_auth_to_init }, /* not explicitly in sta_newstate() */
3396 { IEEE80211_S_ASSOC, IEEE80211_S_INIT, lkpi_sta_assoc_to_init }, /* Send DEAUTH. */
3397 { IEEE80211_S_RUN, IEEE80211_S_INIT, lkpi_sta_run_to_init }, /* Send DISASSOC. */
3398
3399 { IEEE80211_S_INIT, IEEE80211_S_SCAN, lkpi_sta_state_do_nada },
3400 { IEEE80211_S_SCAN, IEEE80211_S_SCAN, lkpi_sta_state_do_nada },
3401 { IEEE80211_S_AUTH, IEEE80211_S_SCAN, lkpi_sta_auth_to_scan },
3402 { IEEE80211_S_ASSOC, IEEE80211_S_SCAN, lkpi_sta_assoc_to_scan },
3403 { IEEE80211_S_RUN, IEEE80211_S_SCAN, lkpi_sta_run_to_scan }, /* Beacon miss. */
3404
3405 { IEEE80211_S_INIT, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* Send AUTH. */
3406 { IEEE80211_S_SCAN, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* Send AUTH. */
3407 { IEEE80211_S_AUTH, IEEE80211_S_AUTH, lkpi_sta_a_to_a }, /* Send ?AUTH. */
3408 { IEEE80211_S_ASSOC, IEEE80211_S_AUTH, lkpi_sta_assoc_to_auth }, /* Send ?AUTH. */
3409 { IEEE80211_S_RUN, IEEE80211_S_AUTH, lkpi_sta_run_to_auth }, /* Send ?AUTH. */
3410
3411 { IEEE80211_S_AUTH, IEEE80211_S_ASSOC, lkpi_sta_auth_to_assoc }, /* Send ASSOCREQ. */
3412 { IEEE80211_S_ASSOC, IEEE80211_S_ASSOC, lkpi_sta_a_to_a }, /* Send ASSOCREQ. */
3413 { IEEE80211_S_RUN, IEEE80211_S_ASSOC, lkpi_sta_run_to_assoc }, /* Send ASSOCREQ/REASSOCREQ. */
3414
3415 { IEEE80211_S_AUTH, IEEE80211_S_RUN, lkpi_sta_auth_to_run },
3416 { IEEE80211_S_ASSOC, IEEE80211_S_RUN, lkpi_sta_assoc_to_run },
3417 { IEEE80211_S_RUN, IEEE80211_S_RUN, lkpi_sta_state_do_nada },
3418
3419 /* Dummy at the end without handler. */
3420 { IEEE80211_S_INIT, IEEE80211_S_INIT, NULL },
3421 };
3422
3423 static int
lkpi_iv_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)3424 lkpi_iv_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
3425 {
3426 struct ieee80211com *ic;
3427 struct lkpi_hw *lhw;
3428 struct lkpi_vif *lvif;
3429 struct ieee80211_vif *vif;
3430 struct fsm_state *s;
3431 enum ieee80211_state ostate;
3432 int error;
3433
3434 ic = vap->iv_ic;
3435 IEEE80211_LOCK_ASSERT(ic);
3436 ostate = vap->iv_state;
3437
3438 #ifdef LINUXKPI_DEBUG_80211
3439 if (linuxkpi_debug_80211 & D80211_TRACE)
3440 ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x\n",
3441 __func__, __LINE__, vap, nstate, arg);
3442 #endif
3443
3444 if (vap->iv_opmode == IEEE80211_M_STA) {
3445
3446 lhw = ic->ic_softc;
3447 lvif = VAP_TO_LVIF(vap);
3448 vif = LVIF_TO_VIF(lvif);
3449
3450 /* No need to replicate this in most state handlers. */
3451 if (ostate == IEEE80211_S_SCAN && nstate != IEEE80211_S_SCAN)
3452 lkpi_stop_hw_scan(lhw, vif);
3453
3454 s = sta_state_fsm;
3455
3456 } else {
3457 ic_printf(vap->iv_ic, "%s: only station mode currently supported: "
3458 "cap %p iv_opmode %d\n", __func__, vap, vap->iv_opmode);
3459 return (ENOSYS);
3460 }
3461
3462 error = 0;
3463 for (; s->handler != NULL; s++) {
3464 if (ostate == s->ostate && nstate == s->nstate) {
3465 #ifdef LINUXKPI_DEBUG_80211
3466 if (linuxkpi_debug_80211 & D80211_TRACE)
3467 ic_printf(vap->iv_ic, "%s: new state %d (%s) ->"
3468 " %d (%s): arg %d.\n", __func__,
3469 ostate, ieee80211_state_name[ostate],
3470 nstate, ieee80211_state_name[nstate], arg);
3471 #endif
3472 error = s->handler(vap, nstate, arg);
3473 break;
3474 }
3475 }
3476 IEEE80211_LOCK_ASSERT(vap->iv_ic);
3477
3478 if (s->handler == NULL) {
3479 IMPROVE("turn this into a KASSERT\n");
3480 ic_printf(vap->iv_ic, "%s: unsupported state transition "
3481 "%d (%s) -> %d (%s)\n", __func__,
3482 ostate, ieee80211_state_name[ostate],
3483 nstate, ieee80211_state_name[nstate]);
3484 return (ENOSYS);
3485 }
3486
3487 if (error == EALREADY) {
3488 #ifdef LINUXKPI_DEBUG_80211
3489 if (linuxkpi_debug_80211 & D80211_TRACE)
3490 ic_printf(vap->iv_ic, "%s: state transition %d (%s) -> "
3491 "%d (%s): iv_newstate already handled: %d.\n",
3492 __func__, ostate, ieee80211_state_name[ostate],
3493 nstate, ieee80211_state_name[nstate], error);
3494 #endif
3495 return (0);
3496 }
3497
3498 if (error != 0) {
3499 ic_printf(vap->iv_ic, "%s: error %d during state transition "
3500 "%d (%s) -> %d (%s)\n", __func__, error,
3501 ostate, ieee80211_state_name[ostate],
3502 nstate, ieee80211_state_name[nstate]);
3503 return (error);
3504 }
3505
3506 #ifdef LINUXKPI_DEBUG_80211
3507 if (linuxkpi_debug_80211 & D80211_TRACE)
3508 ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x "
3509 "calling net80211 parent\n",
3510 __func__, __LINE__, vap, nstate, arg);
3511 #endif
3512
3513 return (lvif->iv_newstate(vap, nstate, arg));
3514 }
3515
3516 /* -------------------------------------------------------------------------- */
3517
3518 /*
3519 * We overload (*iv_update_bss) as otherwise we have cases in, e.g.,
3520 * net80211::ieee80211_sta_join1() where vap->iv_bss gets replaced by a
3521 * new node without us knowing and thus our ni/lsta are out of sync.
3522 */
3523 static struct ieee80211_node *
lkpi_iv_update_bss(struct ieee80211vap * vap,struct ieee80211_node * ni)3524 lkpi_iv_update_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
3525 {
3526 struct lkpi_vif *lvif;
3527 struct ieee80211_node *rni;
3528
3529 IEEE80211_LOCK_ASSERT(vap->iv_ic);
3530
3531 lvif = VAP_TO_LVIF(vap);
3532
3533 LKPI_80211_LVIF_LOCK(lvif);
3534 lvif->lvif_bss_synched = false;
3535 LKPI_80211_LVIF_UNLOCK(lvif);
3536
3537 rni = lvif->iv_update_bss(vap, ni);
3538 return (rni);
3539 }
3540
3541 #ifdef LKPI_80211_WME
3542 static int
lkpi_wme_update(struct lkpi_hw * lhw,struct ieee80211vap * vap,bool planned)3543 lkpi_wme_update(struct lkpi_hw *lhw, struct ieee80211vap *vap, bool planned)
3544 {
3545 struct ieee80211com *ic;
3546 struct ieee80211_hw *hw;
3547 struct lkpi_vif *lvif;
3548 struct ieee80211_vif *vif;
3549 struct chanAccParams chp;
3550 struct wmeParams wmeparr[WME_NUM_AC];
3551 struct ieee80211_tx_queue_params txqp;
3552 enum ieee80211_bss_changed changed;
3553 int error;
3554 uint16_t ac;
3555
3556 hw = LHW_TO_HW(lhw);
3557 lockdep_assert_wiphy(hw->wiphy);
3558
3559 IMPROVE();
3560 KASSERT(WME_NUM_AC == IEEE80211_NUM_ACS, ("%s: WME_NUM_AC %d != "
3561 "IEEE80211_NUM_ACS %d\n", __func__, WME_NUM_AC, IEEE80211_NUM_ACS));
3562
3563 if (vap == NULL)
3564 return (0);
3565
3566 if ((vap->iv_flags & IEEE80211_F_WME) == 0)
3567 return (0);
3568
3569 if (lhw->ops->conf_tx == NULL)
3570 return (0);
3571
3572 if (!planned && (vap->iv_state != IEEE80211_S_RUN)) {
3573 lhw->update_wme = true;
3574 return (0);
3575 }
3576 lhw->update_wme = false;
3577
3578 ic = lhw->ic;
3579 ieee80211_wme_ic_getparams(ic, &chp);
3580 IEEE80211_LOCK(ic);
3581 for (ac = 0; ac < WME_NUM_AC; ac++)
3582 wmeparr[ac] = chp.cap_wmeParams[ac];
3583 IEEE80211_UNLOCK(ic);
3584
3585 lvif = VAP_TO_LVIF(vap);
3586 vif = LVIF_TO_VIF(lvif);
3587
3588 /* Configure tx queues (conf_tx) & send BSS_CHANGED_QOS. */
3589 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3590 struct wmeParams *wmep;
3591
3592 wmep = &wmeparr[ac];
3593 bzero(&txqp, sizeof(txqp));
3594 txqp.cw_min = wmep->wmep_logcwmin;
3595 txqp.cw_max = wmep->wmep_logcwmax;
3596 txqp.txop = wmep->wmep_txopLimit;
3597 txqp.aifs = wmep->wmep_aifsn;
3598 error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp);
3599 if (error != 0)
3600 ic_printf(ic, "%s: conf_tx ac %u failed %d\n",
3601 __func__, ac, error);
3602 }
3603 changed = BSS_CHANGED_QOS;
3604 if (!planned)
3605 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
3606
3607 return (changed);
3608 }
3609 #endif
3610
3611 static int
lkpi_ic_wme_update(struct ieee80211com * ic)3612 lkpi_ic_wme_update(struct ieee80211com *ic)
3613 {
3614 #ifdef LKPI_80211_WME
3615 struct ieee80211vap *vap;
3616 struct lkpi_hw *lhw;
3617 struct ieee80211_hw *hw;
3618
3619 IMPROVE("Use the per-VAP callback in net80211.");
3620 vap = TAILQ_FIRST(&ic->ic_vaps);
3621 if (vap == NULL)
3622 return (0);
3623
3624 lhw = ic->ic_softc;
3625 hw = LHW_TO_HW(lhw);
3626
3627 wiphy_lock(hw->wiphy);
3628 lkpi_wme_update(lhw, vap, false);
3629 wiphy_unlock(hw->wiphy);
3630 #endif
3631 return (0); /* unused */
3632 }
3633
3634 /*
3635 * Change link-layer address on the vif (if the vap is not started/"UP").
3636 * This can happen if a user changes 'ether' using ifconfig.
3637 * The code is based on net80211/ieee80211_freebsd.c::wlan_iflladdr() but
3638 * we do use a per-[l]vif event handler to be sure we exist as we
3639 * cannot assume that from every vap derives a vif and we have a hard
3640 * time checking based on net80211 information.
3641 * Should this ever become a real problem we could add a callback function
3642 * to wlan_iflladdr() to be set optionally but that would be for a
3643 * single-consumer (or needs a list) -- was just too complicated for an
3644 * otherwise perfect mechanism FreeBSD already provides.
3645 */
3646 static void
lkpi_vif_iflladdr(void * arg,struct ifnet * ifp)3647 lkpi_vif_iflladdr(void *arg, struct ifnet *ifp)
3648 {
3649 struct epoch_tracker et;
3650 struct ieee80211_vif *vif;
3651
3652 NET_EPOCH_ENTER(et);
3653 /* NB: identify vap's by if_transmit; left as an extra check. */
3654 if (if_gettransmitfn(ifp) != ieee80211_vap_transmit ||
3655 (if_getflags(ifp) & IFF_UP) != 0) {
3656 NET_EPOCH_EXIT(et);
3657 return;
3658 }
3659
3660 vif = arg;
3661 IEEE80211_ADDR_COPY(vif->bss_conf.addr, if_getlladdr(ifp));
3662 NET_EPOCH_EXIT(et);
3663 }
3664
3665 static struct ieee80211vap *
lkpi_ic_vap_create(struct ieee80211com * ic,const char name[IFNAMSIZ],int unit,enum ieee80211_opmode opmode,int flags,const uint8_t bssid[IEEE80211_ADDR_LEN],const uint8_t mac[IEEE80211_ADDR_LEN])3666 lkpi_ic_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ],
3667 int unit, enum ieee80211_opmode opmode, int flags,
3668 const uint8_t bssid[IEEE80211_ADDR_LEN],
3669 const uint8_t mac[IEEE80211_ADDR_LEN])
3670 {
3671 struct lkpi_hw *lhw;
3672 struct ieee80211_hw *hw;
3673 struct lkpi_vif *lvif;
3674 struct ieee80211vap *vap;
3675 struct ieee80211_vif *vif;
3676 struct ieee80211_tx_queue_params txqp;
3677 enum ieee80211_bss_changed changed;
3678 struct sysctl_oid *node;
3679 size_t len;
3680 int error, i;
3681 uint16_t ac;
3682
3683 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* 1 so far. Add <n> once this works. */
3684 return (NULL);
3685
3686 lhw = ic->ic_softc;
3687 hw = LHW_TO_HW(lhw);
3688
3689 len = sizeof(*lvif);
3690 len += hw->vif_data_size; /* vif->drv_priv */
3691
3692 lvif = malloc(len, M_80211_VAP, M_WAITOK | M_ZERO);
3693 mtx_init(&lvif->mtx, "lvif", NULL, MTX_DEF);
3694 INIT_LIST_HEAD(&lvif->lsta_list);
3695 lvif->lvif_bss = NULL;
3696 refcount_init(&lvif->nt_unlocked, 0);
3697 lvif->lvif_bss_synched = false;
3698 vap = LVIF_TO_VAP(lvif);
3699
3700 vif = LVIF_TO_VIF(lvif);
3701 memcpy(vif->addr, mac, IEEE80211_ADDR_LEN);
3702 vif->p2p = false;
3703 vif->probe_req_reg = false;
3704 vif->type = lkpi_opmode_to_vif_type(opmode);
3705 lvif->wdev.iftype = vif->type;
3706 /* Need to fill in other fields as well. */
3707 IMPROVE();
3708
3709 /* XXX-BZ hardcoded for now! */
3710 #if 1
3711 RCU_INIT_POINTER(vif->bss_conf.chanctx_conf, NULL);
3712 vif->bss_conf.vif = vif;
3713 /* vap->iv_myaddr is not set until net80211::vap_setup or vap_attach. */
3714 IEEE80211_ADDR_COPY(vif->bss_conf.addr, mac);
3715 lvif->lvif_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
3716 lkpi_vif_iflladdr, vif, EVENTHANDLER_PRI_ANY);
3717 vif->bss_conf.link_id = 0; /* Non-MLO operation. */
3718 vif->bss_conf.chanreq.oper.width = NL80211_CHAN_WIDTH_20_NOHT;
3719 vif->bss_conf.use_short_preamble = false; /* vap->iv_flags IEEE80211_F_SHPREAMBLE */
3720 vif->bss_conf.use_short_slot = false; /* vap->iv_flags IEEE80211_F_SHSLOT */
3721 vif->bss_conf.qos = false;
3722 vif->bss_conf.use_cts_prot = false; /* vap->iv_protmode */
3723 vif->bss_conf.ht_operation_mode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
3724 vif->cfg.aid = 0;
3725 vif->cfg.assoc = false;
3726 vif->cfg.idle = true;
3727 vif->cfg.ps = false;
3728 IMPROVE("Check other fields and then figure out whats is left elsewhere of them");
3729 /*
3730 * We need to initialize it to something as the bss_info_changed call
3731 * will try to copy from it in iwlwifi and NULL is a panic.
3732 * We will set the proper one in scan_to_auth() before being assoc.
3733 */
3734 vif->bss_conf.bssid = ieee80211broadcastaddr;
3735 #endif
3736 #if 0
3737 vif->bss_conf.dtim_period = 0; /* IEEE80211_DTIM_DEFAULT ; must stay 0. */
3738 IEEE80211_ADDR_COPY(vif->bss_conf.bssid, bssid);
3739 vif->bss_conf.beacon_int = ic->ic_bintval;
3740 /* iwlwifi bug. */
3741 if (vif->bss_conf.beacon_int < 16)
3742 vif->bss_conf.beacon_int = 16;
3743 #endif
3744
3745 /* Link Config */
3746 vif->link_conf[0] = &vif->bss_conf;
3747 for (i = 0; i < nitems(vif->link_conf); i++) {
3748 IMPROVE("more than 1 link one day");
3749 }
3750
3751 /* Setup queue defaults; driver may override in (*add_interface). */
3752 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
3753 if (ieee80211_hw_check(hw, QUEUE_CONTROL))
3754 vif->hw_queue[i] = IEEE80211_INVAL_HW_QUEUE;
3755 else if (hw->queues >= IEEE80211_NUM_ACS)
3756 vif->hw_queue[i] = i;
3757 else
3758 vif->hw_queue[i] = 0;
3759
3760 /* Initialize the queue to running. Stopped? */
3761 lvif->hw_queue_stopped[i] = false;
3762 }
3763 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
3764
3765 IMPROVE();
3766
3767 error = lkpi_80211_mo_start(hw);
3768 if (error != 0) {
3769 ic_printf(ic, "%s: failed to start hw: %d\n", __func__, error);
3770 mtx_destroy(&lvif->mtx);
3771 free(lvif, M_80211_VAP);
3772 return (NULL);
3773 }
3774
3775 error = lkpi_80211_mo_add_interface(hw, vif);
3776 if (error != 0) {
3777 IMPROVE(); /* XXX-BZ mo_stop()? */
3778 ic_printf(ic, "%s: failed to add interface: %d\n", __func__, error);
3779 mtx_destroy(&lvif->mtx);
3780 free(lvif, M_80211_VAP);
3781 return (NULL);
3782 }
3783
3784 LKPI_80211_LHW_LVIF_LOCK(lhw);
3785 TAILQ_INSERT_TAIL(&lhw->lvif_head, lvif, lvif_entry);
3786 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
3787
3788 /* Set bss_info. */
3789 changed = 0;
3790 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
3791
3792 /* Configure tx queues (conf_tx), default WME & send BSS_CHANGED_QOS. */
3793 IMPROVE("Hardcoded values; to fix see 802.11-2016, 9.4.2.29 EDCA Parameter Set element");
3794 wiphy_lock(hw->wiphy);
3795 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3796
3797 bzero(&txqp, sizeof(txqp));
3798 txqp.cw_min = 15;
3799 txqp.cw_max = 1023;
3800 txqp.txop = 0;
3801 txqp.aifs = 2;
3802 error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp);
3803 if (error != 0)
3804 ic_printf(ic, "%s: conf_tx ac %u failed %d\n",
3805 __func__, ac, error);
3806 }
3807 wiphy_unlock(hw->wiphy);
3808 changed = BSS_CHANGED_QOS;
3809 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
3810
3811 /* Force MC init. */
3812 lkpi_update_mcast_filter(ic, true);
3813
3814 IMPROVE();
3815
3816 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
3817
3818 /* Override with LinuxKPI method so we can drive mac80211/cfg80211. */
3819 lvif->iv_newstate = vap->iv_newstate;
3820 vap->iv_newstate = lkpi_iv_newstate;
3821 lvif->iv_update_bss = vap->iv_update_bss;
3822 vap->iv_update_bss = lkpi_iv_update_bss;
3823
3824 #ifdef LKPI_80211_HW_CRYPTO
3825 /* Key management. */
3826 if (lkpi_hwcrypto && lhw->ops->set_key != NULL) {
3827 vap->iv_key_set = lkpi_iv_key_set;
3828 vap->iv_key_delete = lkpi_iv_key_delete;
3829 vap->iv_key_update_begin = lkpi_iv_key_update_begin;
3830 vap->iv_key_update_end = lkpi_iv_key_update_end;
3831 }
3832 #endif
3833
3834 #ifdef LKPI_80211_HT
3835 /* Stay with the iv_ampdu_rxmax,limit / iv_ampdu_density defaults until later. */
3836 #endif
3837
3838 ieee80211_ratectl_init(vap);
3839
3840 /* Complete setup. */
3841 ieee80211_vap_attach(vap, ieee80211_media_change,
3842 ieee80211_media_status, mac);
3843
3844 #ifdef LKPI_80211_HT
3845 /*
3846 * Modern chipset/fw/drv will do A-MPDU in drv/fw and fail
3847 * to do so if they cannot do the crypto too.
3848 */
3849 if (!lkpi_hwcrypto && ieee80211_hw_check(hw, AMPDU_AGGREGATION))
3850 vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_RX;
3851 #endif
3852 #if defined(LKPI_80211_HT)
3853 /* 20250125-BZ Keep A-MPDU TX cleared until we sorted out AddBA for all drivers. */
3854 vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_TX;
3855 #endif
3856
3857 if (hw->max_listen_interval == 0)
3858 hw->max_listen_interval = 7 * (ic->ic_lintval / ic->ic_bintval);
3859 hw->conf.listen_interval = hw->max_listen_interval;
3860 ic->ic_set_channel(ic);
3861
3862 /* XXX-BZ do we need to be able to update these? */
3863 hw->wiphy->frag_threshold = vap->iv_fragthreshold;
3864 lkpi_80211_mo_set_frag_threshold(hw, vap->iv_fragthreshold);
3865 hw->wiphy->rts_threshold = vap->iv_rtsthreshold;
3866 lkpi_80211_mo_set_rts_threshold(hw, vap->iv_rtsthreshold);
3867 /* any others? */
3868
3869 /* Add per-VIF/VAP sysctls. */
3870 sysctl_ctx_init(&lvif->sysctl_ctx);
3871
3872 node = SYSCTL_ADD_NODE(&lvif->sysctl_ctx,
3873 SYSCTL_CHILDREN(&sysctl___compat_linuxkpi_80211),
3874 OID_AUTO, if_name(vap->iv_ifp),
3875 CTLFLAG_RD | CTLFLAG_SKIP | CTLFLAG_MPSAFE, NULL, "VIF Information");
3876
3877 SYSCTL_ADD_PROC(&lvif->sysctl_ctx,
3878 SYSCTL_CHILDREN(node), OID_AUTO, "dump_stas",
3879 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, lvif, 0,
3880 lkpi_80211_dump_stas, "A", "Dump sta statistics of this vif");
3881
3882 IMPROVE();
3883
3884 return (vap);
3885 }
3886
3887 void
linuxkpi_ieee80211_unregister_hw(struct ieee80211_hw * hw)3888 linuxkpi_ieee80211_unregister_hw(struct ieee80211_hw *hw)
3889 {
3890
3891 wiphy_unregister(hw->wiphy);
3892 linuxkpi_ieee80211_ifdetach(hw);
3893
3894 IMPROVE();
3895 }
3896
3897 void
linuxkpi_ieee80211_restart_hw(struct ieee80211_hw * hw)3898 linuxkpi_ieee80211_restart_hw(struct ieee80211_hw *hw)
3899 {
3900
3901 TODO();
3902 }
3903
3904 static void
lkpi_ic_vap_delete(struct ieee80211vap * vap)3905 lkpi_ic_vap_delete(struct ieee80211vap *vap)
3906 {
3907 struct ieee80211com *ic;
3908 struct lkpi_hw *lhw;
3909 struct ieee80211_hw *hw;
3910 struct lkpi_vif *lvif;
3911 struct ieee80211_vif *vif;
3912
3913 lvif = VAP_TO_LVIF(vap);
3914 vif = LVIF_TO_VIF(lvif);
3915 ic = vap->iv_ic;
3916 lhw = ic->ic_softc;
3917 hw = LHW_TO_HW(lhw);
3918
3919 EVENTHANDLER_DEREGISTER(iflladdr_event, lvif->lvif_ifllevent);
3920
3921 /* Clear up per-VIF/VAP sysctls. */
3922 sysctl_ctx_free(&lvif->sysctl_ctx);
3923
3924 LKPI_80211_LHW_LVIF_LOCK(lhw);
3925 TAILQ_REMOVE(&lhw->lvif_head, lvif, lvif_entry);
3926 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
3927
3928 ieee80211_ratectl_deinit(vap);
3929 ieee80211_vap_detach(vap);
3930
3931 IMPROVE("clear up other bits in this state");
3932
3933 lkpi_80211_mo_remove_interface(hw, vif);
3934
3935 /* Single VAP, so we can do this here. */
3936 lkpi_80211_mo_stop(hw, false); /* XXX SUSPEND */
3937
3938 mtx_destroy(&lvif->mtx);
3939 free(lvif, M_80211_VAP);
3940 }
3941
3942 static void
lkpi_ic_update_mcast(struct ieee80211com * ic)3943 lkpi_ic_update_mcast(struct ieee80211com *ic)
3944 {
3945
3946 lkpi_update_mcast_filter(ic, false);
3947 TRACEOK();
3948 }
3949
3950 static void
lkpi_ic_update_promisc(struct ieee80211com * ic)3951 lkpi_ic_update_promisc(struct ieee80211com *ic)
3952 {
3953
3954 UNIMPLEMENTED;
3955 }
3956
3957 static void
lkpi_ic_update_chw(struct ieee80211com * ic)3958 lkpi_ic_update_chw(struct ieee80211com *ic)
3959 {
3960
3961 UNIMPLEMENTED;
3962 }
3963
3964 /* Start / stop device. */
3965 static void
lkpi_ic_parent(struct ieee80211com * ic)3966 lkpi_ic_parent(struct ieee80211com *ic)
3967 {
3968 struct lkpi_hw *lhw;
3969 struct ieee80211_hw *hw;
3970 #ifdef HW_START_STOP
3971 int error;
3972 #endif
3973 bool start_all;
3974
3975 IMPROVE();
3976
3977 lhw = ic->ic_softc;
3978 hw = LHW_TO_HW(lhw);
3979 start_all = false;
3980
3981 /* IEEE80211_UNLOCK(ic); */
3982 wiphy_lock(hw->wiphy);
3983 if (ic->ic_nrunning > 0) {
3984 #ifdef HW_START_STOP
3985 error = lkpi_80211_mo_start(hw);
3986 if (error == 0)
3987 #endif
3988 start_all = true;
3989 } else {
3990 #ifdef HW_START_STOP
3991 lkpi_80211_mo_stop(hw, false); /* XXX SUSPEND */
3992 #endif
3993 }
3994 wiphy_unlock(hw->wiphy);
3995 /* IEEE80211_LOCK(ic); */
3996
3997 if (start_all)
3998 ieee80211_start_all(ic);
3999 }
4000
4001 bool
linuxkpi_ieee80211_is_ie_id_in_ie_buf(const u8 ie,const u8 * ie_ids,size_t ie_ids_len)4002 linuxkpi_ieee80211_is_ie_id_in_ie_buf(const u8 ie, const u8 *ie_ids,
4003 size_t ie_ids_len)
4004 {
4005 int i;
4006
4007 for (i = 0; i < ie_ids_len; i++) {
4008 if (ie == *ie_ids)
4009 return (true);
4010 }
4011
4012 return (false);
4013 }
4014
4015 /* Return true if skipped; false if error. */
4016 bool
linuxkpi_ieee80211_ie_advance(size_t * xp,const u8 * ies,size_t ies_len)4017 linuxkpi_ieee80211_ie_advance(size_t *xp, const u8 *ies, size_t ies_len)
4018 {
4019 size_t x;
4020 uint8_t l;
4021
4022 x = *xp;
4023
4024 KASSERT(x < ies_len, ("%s: x %zu ies_len %zu ies %p\n",
4025 __func__, x, ies_len, ies));
4026 l = ies[x + 1];
4027 x += 2 + l;
4028
4029 if (x > ies_len)
4030 return (false);
4031
4032 *xp = x;
4033 return (true);
4034 }
4035
4036 static uint8_t *
lkpi_scan_ies_add(uint8_t * p,struct ieee80211_scan_ies * scan_ies,uint32_t band_mask,struct ieee80211vap * vap,struct ieee80211_hw * hw)4037 lkpi_scan_ies_add(uint8_t *p, struct ieee80211_scan_ies *scan_ies,
4038 uint32_t band_mask, struct ieee80211vap *vap, struct ieee80211_hw *hw)
4039 {
4040 struct ieee80211_supported_band *supband;
4041 struct linuxkpi_ieee80211_channel *channels;
4042 struct ieee80211com *ic;
4043 const struct ieee80211_channel *chan;
4044 const struct ieee80211_rateset *rs;
4045 uint8_t *pb;
4046 int band, i;
4047
4048 ic = vap->iv_ic;
4049 for (band = 0; band < NUM_NL80211_BANDS; band++) {
4050 if ((band_mask & (1 << band)) == 0)
4051 continue;
4052
4053 supband = hw->wiphy->bands[band];
4054 /*
4055 * This should not happen;
4056 * band_mask is a bitmask of valid bands to scan on.
4057 */
4058 if (supband == NULL || supband->n_channels == 0)
4059 continue;
4060
4061 /* Find a first channel to get the mode and rates from. */
4062 channels = supband->channels;
4063 chan = NULL;
4064 for (i = 0; i < supband->n_channels; i++) {
4065
4066 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4067 continue;
4068
4069 chan = ieee80211_find_channel(ic,
4070 channels[i].center_freq, 0);
4071 if (chan != NULL)
4072 break;
4073 }
4074
4075 /* This really should not happen. */
4076 if (chan == NULL)
4077 continue;
4078
4079 pb = p;
4080 rs = ieee80211_get_suprates(ic, chan); /* calls chan2mode */
4081 p = ieee80211_add_rates(p, rs);
4082 p = ieee80211_add_xrates(p, rs);
4083
4084 #if defined(LKPI_80211_HT)
4085 if ((vap->iv_flags_ht & IEEE80211_FHT_HT) != 0) {
4086 struct ieee80211_channel *c;
4087
4088 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
4089 vap->iv_flags_ht);
4090 p = ieee80211_add_htcap_ch(p, vap, c);
4091 }
4092 #endif
4093 #if defined(LKPI_80211_VHT)
4094 if (band == NL80211_BAND_5GHZ &&
4095 (vap->iv_vht_flags & IEEE80211_FVHT_VHT) != 0) {
4096 struct ieee80211_channel *c;
4097
4098 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
4099 vap->iv_flags_ht);
4100 c = ieee80211_vht_adjust_channel(ic, c,
4101 vap->iv_vht_flags);
4102 p = ieee80211_add_vhtcap_ch(p, vap, c);
4103 }
4104 #endif
4105
4106 scan_ies->ies[band] = pb;
4107 scan_ies->len[band] = p - pb;
4108 }
4109
4110 /* Add common_ies */
4111 pb = p;
4112 if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 &&
4113 vap->iv_wpa_ie != NULL) {
4114 memcpy(p, vap->iv_wpa_ie, 2 + vap->iv_wpa_ie[1]);
4115 p += 2 + vap->iv_wpa_ie[1];
4116 }
4117 if (vap->iv_appie_probereq != NULL) {
4118 memcpy(p, vap->iv_appie_probereq->ie_data,
4119 vap->iv_appie_probereq->ie_len);
4120 p += vap->iv_appie_probereq->ie_len;
4121 }
4122 scan_ies->common_ies = pb;
4123 scan_ies->common_ie_len = p - pb;
4124
4125 return (p);
4126 }
4127
4128 static void
lkpi_ic_scan_start(struct ieee80211com * ic)4129 lkpi_ic_scan_start(struct ieee80211com *ic)
4130 {
4131 struct lkpi_hw *lhw;
4132 struct ieee80211_hw *hw;
4133 struct lkpi_vif *lvif;
4134 struct ieee80211_vif *vif;
4135 struct ieee80211_scan_state *ss;
4136 struct ieee80211vap *vap;
4137 int error;
4138 bool is_hw_scan;
4139
4140 lhw = ic->ic_softc;
4141 LKPI_80211_LHW_SCAN_LOCK(lhw);
4142 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) {
4143 /* A scan is still running. */
4144 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4145 return;
4146 }
4147 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
4148 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4149
4150 ss = ic->ic_scan;
4151 vap = ss->ss_vap;
4152 if (vap->iv_state != IEEE80211_S_SCAN) {
4153 IMPROVE("We need to be able to scan if not in S_SCAN");
4154 return;
4155 }
4156
4157 hw = LHW_TO_HW(lhw);
4158 if (!is_hw_scan) {
4159 /* If hw_scan is cleared clear FEXT_SCAN_OFFLOAD too. */
4160 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCAN_OFFLOAD;
4161 sw_scan:
4162 lvif = VAP_TO_LVIF(vap);
4163 vif = LVIF_TO_VIF(lvif);
4164
4165 if (vap->iv_state == IEEE80211_S_SCAN)
4166 lkpi_hw_conf_idle(hw, false);
4167
4168 lkpi_80211_mo_sw_scan_start(hw, vif, vif->addr);
4169 /* net80211::scan_start() handled PS for us. */
4170 IMPROVE();
4171 /* XXX Also means it is too late to flush queues?
4172 * need to check iv_sta_ps or overload? */
4173 /* XXX want to adjust ss end time/ maxdwell? */
4174
4175 } else {
4176 struct ieee80211_scan_request *hw_req;
4177 struct linuxkpi_ieee80211_channel *lc, **cpp;
4178 struct cfg80211_ssid *ssids;
4179 struct cfg80211_scan_6ghz_params *s6gp;
4180 size_t chan_len, nchan, ssids_len, s6ghzlen;
4181 int band, i, ssid_count, common_ie_len;
4182 uint32_t band_mask;
4183 uint8_t *ie, *ieend;
4184 bool running;
4185
4186 ssid_count = min(ss->ss_nssid, hw->wiphy->max_scan_ssids);
4187 ssids_len = ssid_count * sizeof(*ssids);
4188 s6ghzlen = 0 * (sizeof(*s6gp)); /* XXX-BZ */
4189
4190 band_mask = 0;
4191 nchan = 0;
4192 if (ieee80211_hw_check(hw, SINGLE_SCAN_ON_ALL_BANDS)) {
4193 #if 0 /* Avoid net80211 scan lists until it has proper scan offload support. */
4194 for (i = ss->ss_next; i < ss->ss_last; i++) {
4195 nchan++;
4196 band = lkpi_net80211_chan_to_nl80211_band(
4197 ss->ss_chans[ss->ss_next + i]);
4198 band_mask |= (1 << band);
4199 }
4200 #else
4201 /* Instead we scan for all channels all the time. */
4202 for (band = 0; band < NUM_NL80211_BANDS; band++) {
4203 switch (band) {
4204 case NL80211_BAND_2GHZ:
4205 case NL80211_BAND_5GHZ:
4206 break;
4207 default:
4208 continue;
4209 }
4210 if (hw->wiphy->bands[band] != NULL) {
4211 nchan += hw->wiphy->bands[band]->n_channels;
4212 band_mask |= (1 << band);
4213 }
4214 }
4215 #endif
4216 } else {
4217 IMPROVE("individual band scans not yet supported, only scanning first band");
4218 /* In theory net80211 should drive this. */
4219 /* Probably we need to add local logic for now;
4220 * need to deal with scan_complete
4221 * and cancel_scan and keep local state.
4222 * Also cut the nchan down above.
4223 */
4224 /* XXX-BZ ath10k does not set this but still does it? &$%^ */
4225 }
4226
4227 chan_len = nchan * (sizeof(lc) + sizeof(*lc));
4228
4229 common_ie_len = 0;
4230 if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 &&
4231 vap->iv_wpa_ie != NULL)
4232 common_ie_len += vap->iv_wpa_ie[1];
4233 if (vap->iv_appie_probereq != NULL)
4234 common_ie_len += vap->iv_appie_probereq->ie_len;
4235
4236 /* We would love to check this at an earlier stage... */
4237 if (common_ie_len > hw->wiphy->max_scan_ie_len) {
4238 ic_printf(ic, "WARNING: %s: common_ie_len %d > "
4239 "wiphy->max_scan_ie_len %d\n", __func__,
4240 common_ie_len, hw->wiphy->max_scan_ie_len);
4241 }
4242
4243 hw_req = malloc(sizeof(*hw_req) + ssids_len +
4244 s6ghzlen + chan_len + lhw->supbands * lhw->scan_ie_len +
4245 common_ie_len, M_LKPI80211, M_WAITOK | M_ZERO);
4246
4247 hw_req->req.flags = 0; /* XXX ??? */
4248 /* hw_req->req.wdev */
4249 hw_req->req.wiphy = hw->wiphy;
4250 hw_req->req.no_cck = false; /* XXX */
4251 #if 0
4252 /* This seems to pessimise default scanning behaviour. */
4253 hw_req->req.duration_mandatory = TICKS_2_USEC(ss->ss_mindwell);
4254 hw_req->req.duration = TICKS_2_USEC(ss->ss_maxdwell);
4255 #endif
4256 #ifdef __notyet__
4257 hw_req->req.flags |= NL80211_SCAN_FLAG_RANDOM_ADDR;
4258 memcpy(hw_req->req.mac_addr, xxx, IEEE80211_ADDR_LEN);
4259 memset(hw_req->req.mac_addr_mask, 0xxx, IEEE80211_ADDR_LEN);
4260 #endif
4261 eth_broadcast_addr(hw_req->req.bssid);
4262
4263 hw_req->req.n_channels = nchan;
4264 cpp = (struct linuxkpi_ieee80211_channel **)(hw_req + 1);
4265 lc = (struct linuxkpi_ieee80211_channel *)(cpp + nchan);
4266 for (i = 0; i < nchan; i++) {
4267 *(cpp + i) =
4268 (struct linuxkpi_ieee80211_channel *)(lc + i);
4269 }
4270 #if 0 /* Avoid net80211 scan lists until it has proper scan offload support. */
4271 for (i = 0; i < nchan; i++) {
4272 struct ieee80211_channel *c;
4273
4274 c = ss->ss_chans[ss->ss_next + i];
4275 lc->hw_value = c->ic_ieee;
4276 lc->center_freq = c->ic_freq; /* XXX */
4277 /* lc->flags */
4278 lc->band = lkpi_net80211_chan_to_nl80211_band(c);
4279 lc->max_power = c->ic_maxpower;
4280 /* lc-> ... */
4281 lc++;
4282 }
4283 #else
4284 for (band = 0; band < NUM_NL80211_BANDS; band++) {
4285 struct ieee80211_supported_band *supband;
4286 struct linuxkpi_ieee80211_channel *channels;
4287
4288 /* Band disabled for scanning? */
4289 if ((band_mask & (1 << band)) == 0)
4290 continue;
4291
4292 /* Nothing to scan in band? */
4293 supband = hw->wiphy->bands[band];
4294 if (supband == NULL || supband->n_channels == 0)
4295 continue;
4296
4297 channels = supband->channels;
4298 for (i = 0; i < supband->n_channels; i++) {
4299 *lc = channels[i];
4300 lc++;
4301 }
4302 }
4303 #endif
4304
4305 hw_req->req.n_ssids = ssid_count;
4306 if (hw_req->req.n_ssids > 0) {
4307 ssids = (struct cfg80211_ssid *)lc;
4308 hw_req->req.ssids = ssids;
4309 for (i = 0; i < ssid_count; i++) {
4310 ssids->ssid_len = ss->ss_ssid[i].len;
4311 memcpy(ssids->ssid, ss->ss_ssid[i].ssid,
4312 ss->ss_ssid[i].len);
4313 ssids++;
4314 }
4315 s6gp = (struct cfg80211_scan_6ghz_params *)ssids;
4316 } else {
4317 s6gp = (struct cfg80211_scan_6ghz_params *)lc;
4318 }
4319
4320 /* 6GHz one day. */
4321 hw_req->req.n_6ghz_params = 0;
4322 hw_req->req.scan_6ghz_params = NULL;
4323 hw_req->req.scan_6ghz = false; /* Weird boolean; not what you think. */
4324 /* s6gp->... */
4325
4326 ie = ieend = (uint8_t *)s6gp;
4327 /* Copy per-band IEs, copy common IEs */
4328 ieend = lkpi_scan_ies_add(ie, &hw_req->ies, band_mask, vap, hw);
4329 hw_req->req.ie = ie;
4330 hw_req->req.ie_len = ieend - ie;
4331
4332 lvif = VAP_TO_LVIF(vap);
4333 vif = LVIF_TO_VIF(lvif);
4334
4335 LKPI_80211_LHW_SCAN_LOCK(lhw);
4336 /* Re-check under lock. */
4337 running = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
4338 if (!running) {
4339 KASSERT(lhw->hw_req == NULL, ("%s: ic %p lhw %p hw_req %p "
4340 "!= NULL\n", __func__, ic, lhw, lhw->hw_req));
4341
4342 lhw->scan_flags |= LKPI_LHW_SCAN_RUNNING;
4343 lhw->hw_req = hw_req;
4344 }
4345 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4346 if (running) {
4347 free(hw_req, M_LKPI80211);
4348 return;
4349 }
4350
4351 error = lkpi_80211_mo_hw_scan(hw, vif, hw_req);
4352 if (error != 0) {
4353 ieee80211_cancel_scan(vap);
4354
4355 /*
4356 * ieee80211_scan_completed must be called in either
4357 * case of error or none. So let the free happen there
4358 * and only there.
4359 * That would be fine in theory but in practice drivers
4360 * behave differently:
4361 * ath10k does not return hw_scan until after scan_complete
4362 * and can then still return an error.
4363 * rtw88 can return 1 or -EBUSY without scan_complete
4364 * iwlwifi can return various errors before scan starts
4365 * ...
4366 * So we cannot rely on that behaviour and have to check
4367 * and balance between both code paths.
4368 */
4369 LKPI_80211_LHW_SCAN_LOCK(lhw);
4370 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) {
4371 free(lhw->hw_req, M_LKPI80211);
4372 lhw->hw_req = NULL;
4373 lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING;
4374 }
4375 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4376
4377 /*
4378 * XXX-SIGH magic number.
4379 * rtw88 has a magic "return 1" if offloading scan is
4380 * not possible. Fall back to sw scan in that case.
4381 */
4382 if (error == 1) {
4383 LKPI_80211_LHW_SCAN_LOCK(lhw);
4384 lhw->scan_flags &= ~LKPI_LHW_SCAN_HW;
4385 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4386 /*
4387 * XXX If we clear this now and later a driver
4388 * thinks it * can do a hw_scan again, we will
4389 * currently not re-enable it?
4390 */
4391 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCAN_OFFLOAD;
4392 ieee80211_start_scan(vap,
4393 IEEE80211_SCAN_ACTIVE |
4394 IEEE80211_SCAN_NOPICK |
4395 IEEE80211_SCAN_ONCE,
4396 IEEE80211_SCAN_FOREVER,
4397 ss->ss_mindwell ? ss->ss_mindwell : msecs_to_ticks(20),
4398 ss->ss_maxdwell ? ss->ss_maxdwell : msecs_to_ticks(200),
4399 vap->iv_des_nssid, vap->iv_des_ssid);
4400 goto sw_scan;
4401 }
4402
4403 ic_printf(ic, "ERROR: %s: hw_scan returned %d\n",
4404 __func__, error);
4405 }
4406 }
4407 }
4408
4409 static void
lkpi_ic_scan_end(struct ieee80211com * ic)4410 lkpi_ic_scan_end(struct ieee80211com *ic)
4411 {
4412 struct lkpi_hw *lhw;
4413 bool is_hw_scan;
4414
4415 lhw = ic->ic_softc;
4416 LKPI_80211_LHW_SCAN_LOCK(lhw);
4417 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) == 0) {
4418 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4419 return;
4420 }
4421 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
4422 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4423
4424 if (!is_hw_scan) {
4425 struct ieee80211_scan_state *ss;
4426 struct ieee80211vap *vap;
4427 struct ieee80211_hw *hw;
4428 struct lkpi_vif *lvif;
4429 struct ieee80211_vif *vif;
4430
4431 ss = ic->ic_scan;
4432 vap = ss->ss_vap;
4433 hw = LHW_TO_HW(lhw);
4434 lvif = VAP_TO_LVIF(vap);
4435 vif = LVIF_TO_VIF(lvif);
4436
4437 lkpi_80211_mo_sw_scan_complete(hw, vif);
4438
4439 /* Send PS to stop buffering if n80211 does not for us? */
4440
4441 if (vap->iv_state == IEEE80211_S_SCAN)
4442 lkpi_hw_conf_idle(hw, true);
4443 }
4444 }
4445
4446 static void
lkpi_ic_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)4447 lkpi_ic_scan_curchan(struct ieee80211_scan_state *ss,
4448 unsigned long maxdwell)
4449 {
4450 struct lkpi_hw *lhw;
4451 bool is_hw_scan;
4452
4453 lhw = ss->ss_ic->ic_softc;
4454 LKPI_80211_LHW_SCAN_LOCK(lhw);
4455 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
4456 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4457 if (!is_hw_scan)
4458 lhw->ic_scan_curchan(ss, maxdwell);
4459 }
4460
4461 static void
lkpi_ic_scan_mindwell(struct ieee80211_scan_state * ss)4462 lkpi_ic_scan_mindwell(struct ieee80211_scan_state *ss)
4463 {
4464 struct lkpi_hw *lhw;
4465 bool is_hw_scan;
4466
4467 lhw = ss->ss_ic->ic_softc;
4468 LKPI_80211_LHW_SCAN_LOCK(lhw);
4469 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
4470 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4471 if (!is_hw_scan)
4472 lhw->ic_scan_mindwell(ss);
4473 }
4474
4475 static void
lkpi_ic_set_channel(struct ieee80211com * ic)4476 lkpi_ic_set_channel(struct ieee80211com *ic)
4477 {
4478 struct lkpi_hw *lhw;
4479 struct ieee80211_hw *hw;
4480 struct ieee80211_channel *c;
4481 struct linuxkpi_ieee80211_channel *chan;
4482 int error;
4483 bool hw_scan_running;
4484
4485 lhw = ic->ic_softc;
4486
4487 /* If we do not support (*config)() save us the work. */
4488 if (lhw->ops->config == NULL)
4489 return;
4490
4491 /* If we have a hw_scan running do not switch channels. */
4492 LKPI_80211_LHW_SCAN_LOCK(lhw);
4493 hw_scan_running =
4494 (lhw->scan_flags & (LKPI_LHW_SCAN_RUNNING|LKPI_LHW_SCAN_HW)) ==
4495 (LKPI_LHW_SCAN_RUNNING|LKPI_LHW_SCAN_HW);
4496 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4497 if (hw_scan_running)
4498 return;
4499
4500 c = ic->ic_curchan;
4501 if (c == NULL || c == IEEE80211_CHAN_ANYC) {
4502 ic_printf(ic, "%s: c %p ops->config %p\n", __func__,
4503 c, lhw->ops->config);
4504 return;
4505 }
4506
4507 chan = lkpi_find_lkpi80211_chan(lhw, c);
4508 if (chan == NULL) {
4509 ic_printf(ic, "%s: c %p chan %p\n", __func__,
4510 c, chan);
4511 return;
4512 }
4513
4514 /* XXX max power for scanning? */
4515 IMPROVE();
4516
4517 hw = LHW_TO_HW(lhw);
4518 cfg80211_chandef_create(&hw->conf.chandef, chan,
4519 #ifdef LKPI_80211_HT
4520 (ic->ic_flags_ht & IEEE80211_FHT_HT) ? NL80211_CHAN_HT20 :
4521 #endif
4522 NL80211_CHAN_NO_HT);
4523
4524 error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_CHANNEL);
4525 if (error != 0 && error != EOPNOTSUPP) {
4526 ic_printf(ic, "ERROR: %s: config %#0x returned %d\n",
4527 __func__, IEEE80211_CONF_CHANGE_CHANNEL, error);
4528 /* XXX should we unroll to the previous chandef? */
4529 IMPROVE();
4530 } else {
4531 /* Update radiotap channels as well. */
4532 lhw->rtap_tx.wt_chan_freq = htole16(c->ic_freq);
4533 lhw->rtap_tx.wt_chan_flags = htole16(c->ic_flags);
4534 lhw->rtap_rx.wr_chan_freq = htole16(c->ic_freq);
4535 lhw->rtap_rx.wr_chan_flags = htole16(c->ic_flags);
4536 }
4537
4538 /* Currently PS is hard coded off! Not sure it belongs here. */
4539 IMPROVE();
4540 if (ieee80211_hw_check(hw, SUPPORTS_PS) &&
4541 (hw->conf.flags & IEEE80211_CONF_PS) != 0) {
4542 hw->conf.flags &= ~IEEE80211_CONF_PS;
4543 error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_PS);
4544 if (error != 0 && error != EOPNOTSUPP)
4545 ic_printf(ic, "ERROR: %s: config %#0x returned "
4546 "%d\n", __func__, IEEE80211_CONF_CHANGE_PS,
4547 error);
4548 }
4549 }
4550
4551 static struct ieee80211_node *
lkpi_ic_node_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN])4552 lkpi_ic_node_alloc(struct ieee80211vap *vap,
4553 const uint8_t mac[IEEE80211_ADDR_LEN])
4554 {
4555 struct ieee80211com *ic;
4556 struct lkpi_hw *lhw;
4557 struct ieee80211_node *ni;
4558 struct ieee80211_hw *hw;
4559 struct lkpi_sta *lsta;
4560
4561 ic = vap->iv_ic;
4562 lhw = ic->ic_softc;
4563
4564 /* We keep allocations de-coupled so we can deal with the two worlds. */
4565 if (lhw->ic_node_alloc == NULL)
4566 return (NULL);
4567
4568 ni = lhw->ic_node_alloc(vap, mac);
4569 if (ni == NULL)
4570 return (NULL);
4571
4572 hw = LHW_TO_HW(lhw);
4573 lsta = lkpi_lsta_alloc(vap, mac, hw, ni);
4574 if (lsta == NULL) {
4575 if (lhw->ic_node_free != NULL)
4576 lhw->ic_node_free(ni);
4577 return (NULL);
4578 }
4579
4580 return (ni);
4581 }
4582
4583 static int
lkpi_ic_node_init(struct ieee80211_node * ni)4584 lkpi_ic_node_init(struct ieee80211_node *ni)
4585 {
4586 struct ieee80211com *ic;
4587 struct lkpi_hw *lhw;
4588 int error;
4589
4590 ic = ni->ni_ic;
4591 lhw = ic->ic_softc;
4592
4593 if (lhw->ic_node_init != NULL) {
4594 error = lhw->ic_node_init(ni);
4595 if (error != 0)
4596 return (error);
4597 }
4598
4599 /* XXX-BZ Sync other state over. */
4600 IMPROVE();
4601
4602 return (0);
4603 }
4604
4605 static void
lkpi_ic_node_cleanup(struct ieee80211_node * ni)4606 lkpi_ic_node_cleanup(struct ieee80211_node *ni)
4607 {
4608 struct ieee80211com *ic;
4609 struct lkpi_hw *lhw;
4610
4611 ic = ni->ni_ic;
4612 lhw = ic->ic_softc;
4613
4614 /* XXX-BZ remove from driver, ... */
4615 IMPROVE();
4616
4617 if (lhw->ic_node_cleanup != NULL)
4618 lhw->ic_node_cleanup(ni);
4619 }
4620
4621 static void
lkpi_ic_node_free(struct ieee80211_node * ni)4622 lkpi_ic_node_free(struct ieee80211_node *ni)
4623 {
4624 struct ieee80211com *ic;
4625 struct lkpi_hw *lhw;
4626 struct lkpi_sta *lsta;
4627
4628 ic = ni->ni_ic;
4629 lhw = ic->ic_softc;
4630 lsta = ni->ni_drv_data;
4631
4632 /* KASSERT lsta is not NULL here. Print ni/ni__refcnt. */
4633
4634 /*
4635 * Pass in the original ni just in case of error we could check that
4636 * it is the same as lsta->ni.
4637 */
4638 lkpi_lsta_free(lsta, ni);
4639
4640 if (lhw->ic_node_free != NULL)
4641 lhw->ic_node_free(ni);
4642 }
4643
4644 /*
4645 * lkpi_xmit() called from both the (*ic_raw_xmit) as well as the (*ic_transmit)
4646 * call path.
4647 * Unfortunately they have slightly different invariants. See
4648 * ieee80211_raw_output() and ieee80211_parent_xmitpkt().
4649 * Both take care of the ni reference in case of error, and otherwise during
4650 * the callback after transmit.
4651 * The difference is that in case of error (*ic_raw_xmit) needs us to release
4652 * the mbuf, while (*ic_transmit) will free the mbuf itself.
4653 */
4654 static int
lkpi_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params __unused,bool freem)4655 lkpi_xmit(struct ieee80211_node *ni, struct mbuf *m,
4656 const struct ieee80211_bpf_params *params __unused,
4657 bool freem)
4658 {
4659 struct lkpi_sta *lsta;
4660 int error;
4661
4662 lsta = ni->ni_drv_data;
4663 LKPI_80211_LSTA_TXQ_LOCK(lsta);
4664 #if 0
4665 if (!lsta->added_to_drv || !lsta->txq_ready) {
4666 #else
4667 /*
4668 * Backout this part of 886653492945f which breaks rtw88 or
4669 * in general drivers without (*sta_state)() but only the
4670 * legacy fallback to (*sta_add)().
4671 */
4672 if (!lsta->txq_ready) {
4673 #endif
4674 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
4675 if (freem)
4676 m_free(m);
4677 return (ENETDOWN);
4678 }
4679
4680 /* Queue the packet and enqueue the task to handle it. */
4681 error = mbufq_enqueue(&lsta->txq, m);
4682 if (error != 0) {
4683 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
4684 if (freem)
4685 m_free(m);
4686 #ifdef LINUXKPI_DEBUG_80211
4687 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
4688 ic_printf(ni->ni_ic, "%s: mbufq_enqueue failed: %d\n",
4689 __func__, error);
4690 #endif
4691 return (ENETDOWN);
4692 }
4693 taskqueue_enqueue(taskqueue_thread, &lsta->txq_task);
4694 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
4695
4696 #ifdef LINUXKPI_DEBUG_80211
4697 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
4698 printf("%s:%d lsta %p ni %p %6D mbuf_qlen %d\n",
4699 __func__, __LINE__, lsta, ni, ni->ni_macaddr, ":",
4700 mbufq_len(&lsta->txq));
4701 #endif
4702
4703 return (0);
4704 }
4705
4706 static int
4707 lkpi_ic_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
4708 const struct ieee80211_bpf_params *params __unused)
4709 {
4710 return (lkpi_xmit(ni, m, NULL, true));
4711 }
4712
4713 #ifdef LKPI_80211_HW_CRYPTO
4714 /*
4715 * This is a bit of a hack given we know we are operating on a
4716 * single frame and we know that hardware will deal with it.
4717 * But otherwise the enmic bit and the encrypt bit need to be
4718 * decoupled.
4719 */
4720 static int
4721 lkpi_hw_crypto_prepare_tkip(struct ieee80211_key *k,
4722 struct ieee80211_key_conf *kc, struct sk_buff *skb)
4723 {
4724 struct ieee80211_hdr *hdr;
4725 uint32_t hlen, hdrlen;
4726 uint8_t *p;
4727
4728 /*
4729 * TKIP only happens on data.
4730 */
4731 hdr = (void *)skb->data;
4732 if (!ieee80211_is_data_present(hdr->frame_control))
4733 return (0);
4734
4735 /*
4736 * "enmic" (though we do not do that).
4737 */
4738 /* any conditions to not apply this? */
4739 if (skb_tailroom(skb) < k->wk_cipher->ic_miclen)
4740 return (ENOBUFS);
4741
4742 p = skb_put(skb, k->wk_cipher->ic_miclen);
4743 if ((kc->flags & IEEE80211_KEY_FLAG_PUT_MIC_SPACE) != 0)
4744 goto encrypt;
4745
4746 /*
4747 * (*enmic) which we hopefully do not have to do with hw accel.
4748 * That means if we make it here we have a problem.
4749 */
4750 TODO("(*enmic)");
4751 return (ENXIO);
4752
4753 encrypt:
4754 /*
4755 * "encrypt" (though we do not do that).
4756 */
4757 /*
4758 * Check if we have anything to do as requested by driver
4759 * or if we are done?
4760 */
4761 if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) == 0 &&
4762 (kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0)
4763 return (0);
4764
4765 hlen = k->wk_cipher->ic_header;
4766 if (skb_headroom(skb) < hlen)
4767 return (ENOBUFS);
4768
4769 hdr = (void *)skb->data;
4770 hdrlen = ieee80211_hdrlen(hdr->frame_control);
4771 p = skb_push(skb, hlen);
4772 memmove(p, p + hlen, hdrlen);
4773
4774 /* If driver request space only we are done. */
4775 if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) != 0)
4776 return (0);
4777
4778 p += hdrlen;
4779 k->wk_cipher->ic_setiv(k, p);
4780
4781 /* If we make it hear we do sw encryption. */
4782 TODO("sw encrypt");
4783 return (ENXIO);
4784 }
4785 static int
4786 lkpi_hw_crypto_prepare_ccmp(struct ieee80211_key *k,
4787 struct ieee80211_key_conf *kc, struct sk_buff *skb)
4788 {
4789 struct ieee80211_hdr *hdr;
4790 uint32_t hlen, hdrlen;
4791 uint8_t *p;
4792
4793 hdr = (void *)skb->data;
4794
4795 /*
4796 * Check if we have anythig to do as requested by driver
4797 * or if we are done?
4798 */
4799 if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) == 0 &&
4800 (kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0 &&
4801 /* MFP */
4802 !((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV_MGMT) != 0 &&
4803 ieee80211_is_mgmt(hdr->frame_control)))
4804 return (0);
4805
4806 hlen = k->wk_cipher->ic_header;
4807 if (skb_headroom(skb) < hlen)
4808 return (ENOBUFS);
4809
4810 hdrlen = ieee80211_hdrlen(hdr->frame_control);
4811 p = skb_push(skb, hlen);
4812 memmove(p, p + hlen, hdrlen);
4813
4814 /* If driver request space only we are done. */
4815 if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) != 0)
4816 return (0);
4817
4818 p += hdrlen;
4819 k->wk_cipher->ic_setiv(k, p);
4820
4821 return (0);
4822 }
4823
4824 static int
4825 lkpi_hw_crypto_prepare(struct lkpi_sta *lsta, struct ieee80211_key *k,
4826 struct sk_buff *skb)
4827 {
4828 struct ieee80211_tx_info *info;
4829 struct ieee80211_key_conf *kc;
4830
4831 KASSERT(lsta != NULL, ("%s: lsta is NULL", __func__));
4832 KASSERT(k != NULL, ("%s: key is NULL", __func__));
4833 KASSERT(skb != NULL, ("%s: skb is NULL", __func__));
4834
4835 kc = lsta->kc[k->wk_keyix];
4836
4837 info = IEEE80211_SKB_CB(skb);
4838 info->control.hw_key = kc;
4839
4840 /* MUST NOT happen. KASSERT? */
4841 if (kc == NULL) {
4842 ic_printf(lsta->ni->ni_ic, "%s: lsta %p k %p skb %p, "
4843 "kc is NULL on hw crypto offload\n", __func__, lsta, k, skb);
4844 return (ENXIO);
4845 }
4846
4847 switch (kc->cipher) {
4848 case WLAN_CIPHER_SUITE_TKIP:
4849 return (lkpi_hw_crypto_prepare_tkip(k, kc, skb));
4850 case WLAN_CIPHER_SUITE_CCMP:
4851 return (lkpi_hw_crypto_prepare_ccmp(k, kc, skb));
4852 case WLAN_CIPHER_SUITE_WEP40:
4853 case WLAN_CIPHER_SUITE_WEP104:
4854 case WLAN_CIPHER_SUITE_CCMP_256:
4855 case WLAN_CIPHER_SUITE_GCMP:
4856 case WLAN_CIPHER_SUITE_GCMP_256:
4857 case WLAN_CIPHER_SUITE_AES_CMAC:
4858 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
4859 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
4860 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
4861 default:
4862 ic_printf(lsta->ni->ni_ic, "%s: lsta %p k %p kc %p skb %p, "
4863 "unsupported cipher suite %u (%s)\n", __func__, lsta, k, kc,
4864 skb, kc->cipher, lkpi_cipher_suite_to_name(kc->cipher));
4865 return (EOPNOTSUPP);
4866 }
4867 }
4868
4869 static uint8_t
4870 lkpi_hw_crypto_tailroom(struct lkpi_sta *lsta, struct ieee80211_key *k)
4871 {
4872 struct ieee80211_key_conf *kc;
4873
4874 kc = lsta->kc[k->wk_keyix];
4875 if (kc == NULL)
4876 return (0);
4877
4878 IMPROVE("which other flags need tailroom?");
4879 if (kc->flags & (IEEE80211_KEY_FLAG_PUT_MIC_SPACE))
4880 return (32); /* Large enough to hold everything and pow2. */
4881
4882 return (0);
4883 }
4884 #endif
4885
4886 static void
4887 lkpi_80211_txq_tx_one(struct lkpi_sta *lsta, struct mbuf *m)
4888 {
4889 struct ieee80211_node *ni;
4890 struct ieee80211_frame *wh;
4891 struct ieee80211_key *k;
4892 struct sk_buff *skb;
4893 struct ieee80211com *ic;
4894 struct lkpi_hw *lhw;
4895 struct ieee80211_hw *hw;
4896 struct lkpi_vif *lvif;
4897 struct ieee80211_vif *vif;
4898 struct ieee80211_channel *c;
4899 struct ieee80211_tx_control control;
4900 struct ieee80211_tx_info *info;
4901 struct ieee80211_sta *sta;
4902 struct ieee80211_hdr *hdr;
4903 struct lkpi_txq *ltxq;
4904 void *buf;
4905 ieee80211_keyix keyix;
4906 uint8_t ac, tid, tailroom;
4907
4908 M_ASSERTPKTHDR(m);
4909 #ifdef LINUXKPI_DEBUG_80211
4910 if (linuxkpi_debug_80211 & D80211_TRACE_TX_DUMP)
4911 hexdump(mtod(m, const void *), m->m_len, "RAW TX (plain) ", 0);
4912 #endif
4913
4914 ni = lsta->ni;
4915 k = NULL;
4916 keyix = IEEE80211_KEYIX_NONE;
4917 wh = mtod(m, struct ieee80211_frame *);
4918 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
4919
4920 #ifdef LKPI_80211_HW_CRYPTO
4921 if (lkpi_hwcrypto) {
4922 k = ieee80211_crypto_get_txkey(ni, m);
4923 if (k != NULL && lsta->kc[k->wk_keyix] != NULL)
4924 keyix = k->wk_keyix;
4925 }
4926 #endif
4927
4928 /* Encrypt the frame if need be. */
4929 if (keyix == IEEE80211_KEYIX_NONE) {
4930 /* Retrieve key for TX && do software encryption. */
4931 k = ieee80211_crypto_encap(ni, m);
4932 if (k == NULL) {
4933 ieee80211_free_node(ni);
4934 m_freem(m);
4935 return;
4936 }
4937 }
4938 }
4939
4940 ic = ni->ni_ic;
4941 lhw = ic->ic_softc;
4942 hw = LHW_TO_HW(lhw);
4943 c = ni->ni_chan;
4944
4945 if (ieee80211_radiotap_active_vap(ni->ni_vap)) {
4946 struct lkpi_radiotap_tx_hdr *rtap;
4947
4948 rtap = &lhw->rtap_tx;
4949 rtap->wt_flags = 0;
4950 if (k != NULL)
4951 rtap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
4952 if (m->m_flags & M_FRAG)
4953 rtap->wt_flags |= IEEE80211_RADIOTAP_F_FRAG;
4954 IMPROVE();
4955 rtap->wt_rate = 0;
4956 if (c != NULL && c != IEEE80211_CHAN_ANYC) {
4957 rtap->wt_chan_freq = htole16(c->ic_freq);
4958 rtap->wt_chan_flags = htole16(c->ic_flags);
4959 }
4960
4961 ieee80211_radiotap_tx(ni->ni_vap, m);
4962 }
4963
4964 #ifdef LKPI_80211_HW_CRYPTO
4965 if (lkpi_hwcrypto && keyix != IEEE80211_KEYIX_NONE)
4966 tailroom = lkpi_hw_crypto_tailroom(lsta, k);
4967 else
4968 #endif
4969 tailroom = 0;
4970
4971 /*
4972 * net80211 should handle hw->extra_tx_headroom.
4973 * Though for as long as we are copying we don't mind.
4974 * XXX-BZ rtw88 asks for too much headroom for ipv6+tcp:
4975 * https://lists.freebsd.org/archives/freebsd-transport/2022-February/000012.html
4976 */
4977 skb = dev_alloc_skb(hw->extra_tx_headroom + tailroom + m->m_pkthdr.len);
4978 if (skb == NULL) {
4979 static uint8_t skb_alloc_failures = 0;
4980
4981 if (skb_alloc_failures++ == 0) {
4982 int tid;
4983
4984 sta = LSTA_TO_STA(lsta);
4985 ic_printf(ic, "ERROR %s: skb alloc failed %d + %d, lsta %p sta %p ni %p\n",
4986 __func__, hw->extra_tx_headroom, m->m_pkthdr.len, lsta, sta, ni);
4987 for (tid = 0; tid < nitems(sta->txq); tid++) {
4988 if (sta->txq[tid] == NULL)
4989 continue;
4990 ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
4991 ic_printf(ic, " tid %d ltxq %p seen_dequeue %d stopped %d skb_queue_len %u\n",
4992 tid, ltxq, ltxq->seen_dequeue, ltxq->stopped, skb_queue_len(<xq->skbq));
4993 }
4994 }
4995 ieee80211_free_node(ni);
4996 m_freem(m);
4997 return;
4998 }
4999 skb_reserve(skb, hw->extra_tx_headroom);
5000
5001 /* XXX-BZ we need a SKB version understanding mbuf. */
5002 /* Save the mbuf for ieee80211_tx_complete(). */
5003 skb->m_free_func = lkpi_ieee80211_free_skb_mbuf;
5004 skb->m = m;
5005 #if 0
5006 skb_put_data(skb, m->m_data, m->m_pkthdr.len);
5007 #else
5008 buf = skb_put(skb, m->m_pkthdr.len);
5009 m_copydata(m, 0, m->m_pkthdr.len, buf);
5010 #endif
5011 /* Save the ni. */
5012 m->m_pkthdr.PH_loc.ptr = ni;
5013
5014 lvif = VAP_TO_LVIF(ni->ni_vap);
5015 vif = LVIF_TO_VIF(lvif);
5016
5017 hdr = (void *)skb->data;
5018 tid = linuxkpi_ieee80211_get_tid(hdr, true);
5019 if (tid == IEEE80211_NONQOS_TID) { /* == IEEE80211_NUM_TIDS */
5020 if (!ieee80211_is_data(hdr->frame_control)) {
5021 /* MGMT and CTRL frames go on TID 7/VO. */
5022 skb->priority = 7;
5023 ac = IEEE80211_AC_VO;
5024 } else {
5025 /* Other non-QOS traffic goes to BE. */
5026 /* Contrary to net80211 we MUST NOT promote M_EAPOL. */
5027 skb->priority = 0;
5028 ac = IEEE80211_AC_BE;
5029 }
5030 } else {
5031 skb->priority = tid & IEEE80211_QOS_CTL_TID_MASK;
5032 ac = ieee80211e_up_to_ac[tid & 7];
5033 }
5034 skb_set_queue_mapping(skb, ac);
5035
5036 info = IEEE80211_SKB_CB(skb);
5037 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
5038 /* Slight delay; probably only happens on scanning so fine? */
5039 if (c == NULL || c == IEEE80211_CHAN_ANYC)
5040 c = ic->ic_curchan;
5041 info->band = lkpi_net80211_chan_to_nl80211_band(c);
5042 info->hw_queue = vif->hw_queue[ac];
5043 if (m->m_flags & M_EAPOL)
5044 info->control.flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO;
5045 info->control.vif = vif;
5046 /* XXX-BZ info->control.rates */
5047 #ifdef __notyet__
5048 #ifdef LKPI_80211_HT
5049 info->control.rts_cts_rate_idx=
5050 info->control.use_rts= /* RTS */
5051 info->control.use_cts_prot= /* RTS/CTS*/
5052 #endif
5053 #endif
5054
5055 sta = LSTA_TO_STA(lsta);
5056 #ifdef LKPI_80211_HW_CRYPTO
5057 if (lkpi_hwcrypto && keyix != IEEE80211_KEYIX_NONE) {
5058 int error;
5059
5060 error = lkpi_hw_crypto_prepare(lsta, k, skb);
5061 if (error != 0) {
5062 /*
5063 * We only have to free the skb which will free the
5064 * mbuf and release the reference on the ni.
5065 */
5066 dev_kfree_skb(skb);
5067 return;
5068 }
5069 }
5070 #endif
5071
5072 IMPROVE();
5073
5074 ltxq = NULL;
5075 if (!ieee80211_is_data_present(hdr->frame_control)) {
5076 if (vif->type == NL80211_IFTYPE_STATION &&
5077 lsta->added_to_drv &&
5078 sta->txq[IEEE80211_NUM_TIDS] != NULL)
5079 ltxq = TXQ_TO_LTXQ(sta->txq[IEEE80211_NUM_TIDS]);
5080 } else if (lsta->added_to_drv &&
5081 sta->txq[skb->priority] != NULL) {
5082 ltxq = TXQ_TO_LTXQ(sta->txq[skb->priority]);
5083 }
5084 if (ltxq == NULL)
5085 goto ops_tx;
5086
5087 KASSERT(ltxq != NULL, ("%s: lsta %p sta %p m %p skb %p "
5088 "ltxq %p != NULL\n", __func__, lsta, sta, m, skb, ltxq));
5089
5090 LKPI_80211_LTXQ_LOCK(ltxq);
5091 skb_queue_tail(<xq->skbq, skb);
5092 #ifdef LINUXKPI_DEBUG_80211
5093 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
5094 printf("%s:%d mo_wake_tx_queue :: %d %lu lsta %p sta %p "
5095 "ni %p %6D skb %p lxtq %p { qlen %u, ac %d tid %u } "
5096 "WAKE_TX_Q ac %d prio %u qmap %u\n",
5097 __func__, __LINE__,
5098 curthread->td_tid, jiffies,
5099 lsta, sta, ni, ni->ni_macaddr, ":", skb, ltxq,
5100 skb_queue_len(<xq->skbq), ltxq->txq.ac,
5101 ltxq->txq.tid, ac, skb->priority, skb->qmap);
5102 #endif
5103 LKPI_80211_LTXQ_UNLOCK(ltxq);
5104 wiphy_lock(hw->wiphy);
5105 lkpi_80211_mo_wake_tx_queue(hw, <xq->txq);
5106 wiphy_unlock(hw->wiphy);
5107 return;
5108
5109 ops_tx:
5110 #ifdef LINUXKPI_DEBUG_80211
5111 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
5112 printf("%s:%d mo_tx :: lsta %p sta %p ni %p %6D skb %p "
5113 "TX ac %d prio %u qmap %u\n",
5114 __func__, __LINE__, lsta, sta, ni, ni->ni_macaddr, ":",
5115 skb, ac, skb->priority, skb->qmap);
5116 #endif
5117 memset(&control, 0, sizeof(control));
5118 control.sta = sta;
5119 wiphy_lock(hw->wiphy);
5120 lkpi_80211_mo_tx(hw, &control, skb);
5121 wiphy_unlock(hw->wiphy);
5122 }
5123
5124 static void
5125 lkpi_80211_txq_task(void *ctx, int pending)
5126 {
5127 struct lkpi_sta *lsta;
5128 struct mbufq mq;
5129 struct mbuf *m;
5130 bool shall_tx;
5131
5132 lsta = ctx;
5133
5134 #ifdef LINUXKPI_DEBUG_80211
5135 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
5136 printf("%s:%d lsta %p ni %p %6D pending %d mbuf_qlen %d\n",
5137 __func__, __LINE__, lsta, lsta->ni, lsta->ni->ni_macaddr, ":",
5138 pending, mbufq_len(&lsta->txq));
5139 #endif
5140
5141 mbufq_init(&mq, IFQ_MAXLEN);
5142
5143 LKPI_80211_LSTA_TXQ_LOCK(lsta);
5144 /*
5145 * Do not re-check lsta->txq_ready here; we may have a pending
5146 * disassoc/deauth frame still. On the contrary if txq_ready is
5147 * false we do not have a valid sta anymore in the firmware so no
5148 * point to try to TX.
5149 * We also use txq_ready as a semaphore and will drain the txq manually
5150 * if needed on our way towards SCAN/INIT in the state machine.
5151 */
5152 #if 0
5153 shall_tx = lsta->added_to_drv && lsta->txq_ready;
5154 #else
5155 /*
5156 * Backout this part of 886653492945f which breaks rtw88 or
5157 * in general drivers without (*sta_state)() but only the
5158 * legacy fallback to (*sta_add)().
5159 */
5160 shall_tx = lsta->txq_ready;
5161 #endif
5162 if (__predict_true(shall_tx))
5163 mbufq_concat(&mq, &lsta->txq);
5164 /*
5165 * else a state change will push the packets out manually or
5166 * lkpi_lsta_free() will drain the lsta->txq and free the mbufs.
5167 */
5168 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
5169
5170 m = mbufq_dequeue(&mq);
5171 while (m != NULL) {
5172 lkpi_80211_txq_tx_one(lsta, m);
5173 m = mbufq_dequeue(&mq);
5174 }
5175 }
5176
5177 static int
5178 lkpi_ic_transmit(struct ieee80211com *ic, struct mbuf *m)
5179 {
5180
5181 /* XXX TODO */
5182 IMPROVE();
5183
5184 /* Quick and dirty cheating hack. */
5185 struct ieee80211_node *ni;
5186
5187 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
5188 return (lkpi_xmit(ni, m, NULL, false));
5189 }
5190
5191 #ifdef LKPI_80211_HT
5192 static int
5193 lkpi_ic_recv_action(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
5194 const uint8_t *frm, const uint8_t *efrm)
5195 {
5196 struct ieee80211com *ic;
5197 struct lkpi_hw *lhw;
5198
5199 ic = ni->ni_ic;
5200 lhw = ic->ic_softc;
5201
5202 IMPROVE_HT("recv_action called; nothing to do in lkpi; make debugging");
5203
5204 return (lhw->ic_recv_action(ni, wh, frm, efrm));
5205 }
5206
5207 static int
5208 lkpi_ic_send_action(struct ieee80211_node *ni, int category, int action, void *sa)
5209 {
5210 struct ieee80211com *ic;
5211 struct lkpi_hw *lhw;
5212
5213 ic = ni->ni_ic;
5214 lhw = ic->ic_softc;
5215
5216 IMPROVE_HT("send_action called; nothing to do in lkpi; make debugging");
5217
5218 return (lhw->ic_send_action(ni, category, action, sa));
5219 }
5220
5221
5222 static int
5223 lkpi_ic_ampdu_enable(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
5224 {
5225 struct ieee80211com *ic;
5226 struct lkpi_hw *lhw;
5227
5228 ic = ni->ni_ic;
5229 lhw = ic->ic_softc;
5230
5231 IMPROVE_HT("ieee80211_ampdu_enable called; nothing to do in lkpi for now; make debugging");
5232
5233 return (lhw->ic_ampdu_enable(ni, tap));
5234 }
5235
5236 /*
5237 * (*ic_addba_request)() is called by ieee80211_ampdu_request() before
5238 * calling send_action(CAT_BA, BA_ADDBA_REQUEST).
5239 *
5240 * NB: returns 0 on ERROR!
5241 */
5242 static int
5243 lkpi_ic_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
5244 int dialogtoken, int baparamset, int batimeout)
5245 {
5246 struct ieee80211com *ic;
5247 struct lkpi_hw *lhw;
5248 struct ieee80211_hw *hw;
5249 struct ieee80211vap *vap;
5250 struct lkpi_vif *lvif;
5251 struct ieee80211_vif *vif;
5252 struct lkpi_sta *lsta;
5253 struct ieee80211_sta *sta;
5254 struct ieee80211_ampdu_params params = { };
5255 int error;
5256
5257 ic = ni->ni_ic;
5258 lhw = ic->ic_softc;
5259 hw = LHW_TO_HW(lhw);
5260 vap = ni->ni_vap;
5261 lvif = VAP_TO_LVIF(vap);
5262 vif = LVIF_TO_VIF(lvif);
5263 lsta = ni->ni_drv_data;
5264 sta = LSTA_TO_STA(lsta);
5265
5266 if (!lsta->added_to_drv) {
5267 ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n",
5268 __func__, lsta, ni, sta);
5269 return (0);
5270 }
5271
5272 params.sta = sta;
5273 params.action = IEEE80211_AMPDU_TX_START;
5274 /* Keep 0 here! */
5275 params.buf_size = 0;
5276 params.timeout = 0;
5277 params.ssn = tap->txa_start & (IEEE80211_SEQ_RANGE-1);
5278 params.tid = tap->txa_tid;
5279 params.amsdu = false;
5280
5281 IEEE80211_UNLOCK(ic);
5282 wiphy_lock(hw->wiphy);
5283 error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms);
5284 wiphy_unlock(hw->wiphy);
5285 IEEE80211_LOCK(ic);
5286 if (error != 0) {
5287 ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n",
5288 __func__, error, ni, tap);
5289 return (0);
5290 }
5291
5292 return (lhw->ic_addba_request(ni, tap, dialogtoken, baparamset, batimeout));
5293 }
5294
5295 /*
5296 * (*ic_addba_response)() is called from ht_recv_action_ba_addba_response()
5297 * and calls the default ieee80211_addba_response() which always returns 1.
5298 *
5299 * NB: No error checking in net80211!
5300 * Staying with 0 is an error.
5301 */
5302 static int
5303 lkpi_ic_addba_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
5304 int status, int baparamset, int batimeout)
5305 {
5306 struct ieee80211com *ic;
5307 struct lkpi_hw *lhw;
5308 struct ieee80211_hw *hw;
5309 struct ieee80211vap *vap;
5310 struct lkpi_vif *lvif;
5311 struct ieee80211_vif *vif;
5312 struct lkpi_sta *lsta;
5313 struct ieee80211_sta *sta;
5314 struct ieee80211_ampdu_params params = { };
5315 int error;
5316
5317 ic = ni->ni_ic;
5318 lhw = ic->ic_softc;
5319 hw = LHW_TO_HW(lhw);
5320 vap = ni->ni_vap;
5321 lvif = VAP_TO_LVIF(vap);
5322 vif = LVIF_TO_VIF(lvif);
5323 lsta = ni->ni_drv_data;
5324 sta = LSTA_TO_STA(lsta);
5325
5326 if (!lsta->added_to_drv) {
5327 ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n",
5328 __func__, lsta, ni, sta);
5329 return (0);
5330 }
5331
5332 if (status == IEEE80211_STATUS_SUCCESS) {
5333 params.sta = sta;
5334 params.action = IEEE80211_AMPDU_TX_OPERATIONAL;
5335 params.buf_size = tap->txa_wnd;
5336 params.timeout = 0;
5337 params.ssn = 0;
5338 params.tid = tap->txa_tid;
5339 if ((tap->txa_flags & IEEE80211_AGGR_AMSDU) != 0)
5340 params.amsdu = true;
5341 else
5342 params.amsdu = false;
5343 } else {
5344 /* We need to free the allocated resources. */
5345 params.sta = sta;
5346 switch (status) {
5347 /* params.action = FLUSH, FLUSH_CONT */
5348 default:
5349 params.action = IEEE80211_AMPDU_TX_STOP_CONT;
5350 break;
5351 }
5352 params.buf_size = 0;
5353 params.timeout = 0;
5354 params.ssn = 0;
5355 params.tid = tap->txa_tid;
5356 params.amsdu = false;
5357 }
5358
5359 IEEE80211_UNLOCK(ic);
5360 wiphy_lock(hw->wiphy);
5361 error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms);
5362 wiphy_unlock(hw->wiphy);
5363 IEEE80211_LOCK(ic);
5364 if (error != 0) {
5365 ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n",
5366 __func__, error, ni, tap);
5367 return (0);
5368 }
5369
5370 IMPROVE_HT("who unleashes the TXQ? and when?, do we need to ni->ni_txseqs[tid] = tap->txa_start & 0xfff;");
5371
5372 return (lhw->ic_addba_response(ni, tap, status, baparamset, batimeout));
5373 }
5374
5375 /*
5376 * (*ic_addba_stop)() is called from ampdu_tx_stop(), ht_recv_action_ba_delba(),
5377 * and ieee80211_ampdu_stop() and calls the default ieee80211_addba_stop().
5378 */
5379 static void
5380 lkpi_ic_addba_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
5381 {
5382 struct ieee80211com *ic;
5383 struct lkpi_hw *lhw;
5384 struct ieee80211_hw *hw;
5385 struct ieee80211vap *vap;
5386 struct lkpi_vif *lvif;
5387 struct ieee80211_vif *vif;
5388 struct lkpi_sta *lsta;
5389 struct ieee80211_sta *sta;
5390 struct ieee80211_ampdu_params params = { };
5391 int error;
5392
5393 ic = ni->ni_ic;
5394 lhw = ic->ic_softc;
5395 hw = LHW_TO_HW(lhw);
5396 vap = ni->ni_vap;
5397 lvif = VAP_TO_LVIF(vap);
5398 vif = LVIF_TO_VIF(lvif);
5399 lsta = ni->ni_drv_data;
5400 sta = LSTA_TO_STA(lsta);
5401
5402 if (!lsta->added_to_drv) {
5403 ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n",
5404 __func__, lsta, ni, sta);
5405 goto n80211;
5406 }
5407
5408 /* We need to free the allocated resources. */
5409 params.sta = sta;
5410 IMPROVE("net80211 does not provide a reason to us");
5411 params.action = IEEE80211_AMPDU_TX_STOP_CONT; /* params.action = FLUSH, FLUSH_CONT */
5412 params.buf_size = 0;
5413 params.timeout = 0;
5414 params.ssn = 0;
5415 params.tid = tap->txa_tid;
5416 params.amsdu = false;
5417
5418 IEEE80211_UNLOCK(ic);
5419 wiphy_lock(hw->wiphy);
5420 error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms);
5421 wiphy_unlock(hw->wiphy);
5422 IEEE80211_LOCK(ic);
5423 if (error != 0) {
5424 ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n",
5425 __func__, error, ni, tap);
5426 goto n80211;
5427 }
5428
5429 IMPROVE_HT("anyting else?");
5430
5431 n80211:
5432 lhw->ic_addba_stop(ni, tap);
5433 }
5434
5435 static void
5436 lkpi_ic_addba_response_timeout(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
5437 {
5438 struct ieee80211com *ic;
5439 struct lkpi_hw *lhw;
5440
5441 ic = ni->ni_ic;
5442 lhw = ic->ic_softc;
5443
5444 IMPROVE_HT();
5445
5446 lhw->ic_addba_response_timeout(ni, tap);
5447 }
5448
5449 static void
5450 lkpi_ic_bar_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
5451 int status)
5452 {
5453 struct ieee80211com *ic;
5454 struct lkpi_hw *lhw;
5455
5456 ic = ni->ni_ic;
5457 lhw = ic->ic_softc;
5458
5459 IMPROVE_HT();
5460
5461 lhw->ic_bar_response(ni, tap, status);
5462 }
5463
5464 static int
5465 lkpi_ic_ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
5466 int baparamset, int batimeout, int baseqctl)
5467 {
5468 struct ieee80211com *ic;
5469 struct lkpi_hw *lhw;
5470 struct ieee80211_hw *hw;
5471 struct ieee80211vap *vap;
5472 struct lkpi_vif *lvif;
5473 struct ieee80211_vif *vif;
5474 struct lkpi_sta *lsta;
5475 struct ieee80211_sta *sta;
5476 struct ieee80211_ampdu_params params = { };
5477 int error;
5478
5479 ic = ni->ni_ic;
5480 lhw = ic->ic_softc;
5481 hw = LHW_TO_HW(lhw);
5482 vap = ni->ni_vap;
5483 lvif = VAP_TO_LVIF(vap);
5484 vif = LVIF_TO_VIF(lvif);
5485 lsta = ni->ni_drv_data;
5486 sta = LSTA_TO_STA(lsta);
5487
5488 IEEE80211_UNLOCK_ASSERT(ic);
5489
5490 if (!lsta->added_to_drv) {
5491 ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p not added to firmware\n",
5492 __func__, lsta, ni, vap, sta);
5493 return (-ENXIO);
5494 }
5495
5496 params.sta = sta;
5497 params.action = IEEE80211_AMPDU_RX_START;
5498 params.buf_size = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_BUFSIZ);
5499 if (params.buf_size == 0)
5500 params.buf_size = IEEE80211_MAX_AMPDU_BUF_HT;
5501 else
5502 params.buf_size = min(params.buf_size, IEEE80211_MAX_AMPDU_BUF_HT);
5503 if (hw->max_rx_aggregation_subframes > 0 &&
5504 params.buf_size > hw->max_rx_aggregation_subframes)
5505 params.buf_size = hw->max_rx_aggregation_subframes;
5506 params.timeout = le16toh(batimeout);
5507 params.ssn = _IEEE80211_MASKSHIFT(le16toh(baseqctl), IEEE80211_BASEQ_START);
5508 params.tid = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_TID);
5509
5510 /* Based on net80211::ampdu_rx_start(). */
5511 if ((vap->iv_htcaps & IEEE80211_HTC_RX_AMSDU_AMPDU) &&
5512 (_IEEE80211_MASKSHIFT(baparamset, IEEE80211_BAPS_AMSDU)))
5513 params.amsdu = true;
5514 else
5515 params.amsdu = false;
5516
5517 wiphy_lock(hw->wiphy);
5518 error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms);
5519 wiphy_unlock(hw->wiphy);
5520 if (error != 0) {
5521 ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n",
5522 __func__, error, ni, rap);
5523 return (error);
5524 }
5525
5526 if (!ieee80211_hw_check(hw, SUPPORTS_REORDERING_BUFFER)) {
5527 IMPROVE("%s: TODO: SUPPORTS_REORDERING_BUFFER not set; check net80211\n", __func__);
5528 }
5529
5530 IMPROVE_HT("net80211 is missing the error check on return and assumes success");
5531
5532 error = lhw->ic_ampdu_rx_start(ni, rap, baparamset, batimeout, baseqctl);
5533 return (error);
5534 }
5535
5536 static void
5537 lkpi_ic_ampdu_rx_stop(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap)
5538 {
5539 struct ieee80211com *ic;
5540 struct lkpi_hw *lhw;
5541 struct ieee80211_hw *hw;
5542 struct ieee80211vap *vap;
5543 struct lkpi_vif *lvif;
5544 struct ieee80211_vif *vif;
5545 struct lkpi_sta *lsta;
5546 struct ieee80211_sta *sta;
5547 struct ieee80211_ampdu_params params = { };
5548 int error;
5549 uint8_t tid;
5550 bool ic_locked;
5551
5552 ic = ni->ni_ic;
5553 lhw = ic->ic_softc;
5554
5555 /*
5556 * We should not (cannot) call into mac80211 ops with AMPDU_RX_STOP if
5557 * we did not START. Some drivers pass it down to firmware which will
5558 * simply barf and net80211 calls ieee80211_ht_node_cleanup() from
5559 * ieee80211_ht_node_init() amongst others which will iterate over all
5560 * tid and call ic_ampdu_rx_stop() unconditionally.
5561 * XXX net80211 should probably be more "gentle" in these cases and
5562 * track some state itself.
5563 */
5564 if ((rap->rxa_flags & IEEE80211_AGGR_RUNNING) == 0)
5565 goto net80211_only;
5566
5567 hw = LHW_TO_HW(lhw);
5568 vap = ni->ni_vap;
5569 lvif = VAP_TO_LVIF(vap);
5570 vif = LVIF_TO_VIF(lvif);
5571 lsta = ni->ni_drv_data;
5572 sta = LSTA_TO_STA(lsta);
5573
5574 IMPROVE_HT("This really should be passed from ht_recv_action_ba_delba.");
5575 for (tid = 0; tid < WME_NUM_TID; tid++) {
5576 if (&ni->ni_rx_ampdu[tid] == rap)
5577 break;
5578 }
5579
5580 params.sta = sta;
5581 params.action = IEEE80211_AMPDU_RX_STOP;
5582 params.buf_size = 0;
5583 params.timeout = 0;
5584 params.ssn = 0;
5585 params.tid = tid;
5586 params.amsdu = false;
5587
5588 ic_locked = IEEE80211_IS_LOCKED(ic);
5589 if (ic_locked)
5590 IEEE80211_UNLOCK(ic);
5591 wiphy_lock(hw->wiphy);
5592 error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms);
5593 wiphy_unlock(hw->wiphy);
5594 if (ic_locked)
5595 IEEE80211_LOCK(ic);
5596 if (error != 0)
5597 ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n",
5598 __func__, error, ni, rap);
5599
5600 net80211_only:
5601 lhw->ic_ampdu_rx_stop(ni, rap);
5602 }
5603 #endif
5604
5605 static void
5606 lkpi_ic_getradiocaps_ht(struct ieee80211com *ic, struct ieee80211_hw *hw,
5607 uint8_t *bands, int *chan_flags, enum nl80211_band band)
5608 {
5609 #ifdef LKPI_80211_HT
5610 struct ieee80211_sta_ht_cap *ht_cap;
5611
5612 ht_cap = &hw->wiphy->bands[band]->ht_cap;
5613 if (!ht_cap->ht_supported)
5614 return;
5615
5616 switch (band) {
5617 case NL80211_BAND_2GHZ:
5618 setbit(bands, IEEE80211_MODE_11NG);
5619 break;
5620 case NL80211_BAND_5GHZ:
5621 setbit(bands, IEEE80211_MODE_11NA);
5622 break;
5623 default:
5624 IMPROVE("Unsupported band %d", band);
5625 return;
5626 }
5627
5628 ic->ic_htcaps = IEEE80211_HTC_HT; /* HT operation */
5629
5630 /*
5631 * Rather than manually checking each flag and
5632 * translating IEEE80211_HT_CAP_ to IEEE80211_HTCAP_,
5633 * simply copy the 16bits.
5634 */
5635 ic->ic_htcaps |= ht_cap->cap;
5636
5637 /* Then deal with the other flags. */
5638 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION))
5639 ic->ic_htcaps |= IEEE80211_HTC_AMPDU;
5640 #ifdef __notyet__
5641 if (ieee80211_hw_check(hw, TX_AMSDU))
5642 ic->ic_htcaps |= IEEE80211_HTC_AMSDU;
5643 if (ieee80211_hw_check(hw, SUPPORTS_AMSDU_IN_AMPDU))
5644 ic->ic_htcaps |= (IEEE80211_HTC_RX_AMSDU_AMPDU |
5645 IEEE80211_HTC_TX_AMSDU_AMPDU);
5646 #endif
5647
5648 IMPROVE("PS, ampdu_*, ht_cap.mcs.tx_params, ...");
5649 ic->ic_htcaps |= IEEE80211_HTCAP_SMPS_OFF;
5650
5651 /* Only add HT40 channels if supported. */
5652 if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) != 0 &&
5653 chan_flags != NULL)
5654 *chan_flags |= NET80211_CBW_FLAG_HT40;
5655 #endif
5656 }
5657
5658 static void
5659 lkpi_ic_getradiocaps(struct ieee80211com *ic, int maxchan,
5660 int *n, struct ieee80211_channel *c)
5661 {
5662 struct lkpi_hw *lhw;
5663 struct ieee80211_hw *hw;
5664 struct linuxkpi_ieee80211_channel *channels;
5665 uint8_t bands[IEEE80211_MODE_BYTES];
5666 int chan_flags, error, i, nchans;
5667
5668 /* Channels */
5669 lhw = ic->ic_softc;
5670 hw = LHW_TO_HW(lhw);
5671
5672 /* NL80211_BAND_2GHZ */
5673 nchans = 0;
5674 if (hw->wiphy->bands[NL80211_BAND_2GHZ] != NULL)
5675 nchans = hw->wiphy->bands[NL80211_BAND_2GHZ]->n_channels;
5676 if (nchans > 0) {
5677 memset(bands, 0, sizeof(bands));
5678 chan_flags = 0;
5679 setbit(bands, IEEE80211_MODE_11B);
5680 /* XXX-BZ unclear how to check for 11g. */
5681
5682 IMPROVE("the bitrates may have flags?");
5683 setbit(bands, IEEE80211_MODE_11G);
5684
5685 lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags,
5686 NL80211_BAND_2GHZ);
5687
5688 channels = hw->wiphy->bands[NL80211_BAND_2GHZ]->channels;
5689 for (i = 0; i < nchans && *n < maxchan; i++) {
5690 uint32_t nflags = 0;
5691 int cflags = chan_flags;
5692
5693 if (channels[i].flags & IEEE80211_CHAN_DISABLED) {
5694 ic_printf(ic, "%s: Skipping disabled chan "
5695 "[%u/%u/%#x]\n", __func__,
5696 channels[i].hw_value,
5697 channels[i].center_freq, channels[i].flags);
5698 continue;
5699 }
5700 if (channels[i].flags & IEEE80211_CHAN_NO_IR)
5701 nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE);
5702 if (channels[i].flags & IEEE80211_CHAN_RADAR)
5703 nflags |= IEEE80211_CHAN_DFS;
5704 if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ)
5705 cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80);
5706 if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ)
5707 cflags &= ~NET80211_CBW_FLAG_VHT80;
5708 /* XXX how to map the remaining enum ieee80211_channel_flags? */
5709 if (channels[i].flags & IEEE80211_CHAN_NO_HT40)
5710 cflags &= ~NET80211_CBW_FLAG_HT40;
5711
5712 error = ieee80211_add_channel_cbw(c, maxchan, n,
5713 channels[i].hw_value, channels[i].center_freq,
5714 channels[i].max_power,
5715 nflags, bands, cflags);
5716 /* net80211::ENOBUFS: *n >= maxchans */
5717 if (error != 0 && error != ENOBUFS)
5718 ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x "
5719 "returned error %d\n",
5720 __func__, channels[i].hw_value,
5721 channels[i].center_freq, channels[i].flags,
5722 nflags, chan_flags, cflags, error);
5723 if (error != 0)
5724 break;
5725 }
5726 }
5727
5728 /* NL80211_BAND_5GHZ */
5729 nchans = 0;
5730 if (hw->wiphy->bands[NL80211_BAND_5GHZ] != NULL)
5731 nchans = hw->wiphy->bands[NL80211_BAND_5GHZ]->n_channels;
5732 if (nchans > 0) {
5733 memset(bands, 0, sizeof(bands));
5734 chan_flags = 0;
5735 setbit(bands, IEEE80211_MODE_11A);
5736
5737 lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags,
5738 NL80211_BAND_5GHZ);
5739
5740 #ifdef LKPI_80211_VHT
5741 if (hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.vht_supported) {
5742
5743 ic->ic_flags_ext |= IEEE80211_FEXT_VHT;
5744 ic->ic_vht_cap.vht_cap_info =
5745 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap;
5746 ic->ic_vht_cap.supp_mcs =
5747 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.vht_mcs;
5748
5749 setbit(bands, IEEE80211_MODE_VHT_5GHZ);
5750 chan_flags |= NET80211_CBW_FLAG_VHT80;
5751 if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160MHZ(
5752 ic->ic_vht_cap.vht_cap_info))
5753 chan_flags |= NET80211_CBW_FLAG_VHT160;
5754 if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160_80P80MHZ(
5755 ic->ic_vht_cap.vht_cap_info))
5756 chan_flags |= NET80211_CBW_FLAG_VHT80P80;
5757 }
5758 #endif
5759
5760 channels = hw->wiphy->bands[NL80211_BAND_5GHZ]->channels;
5761 for (i = 0; i < nchans && *n < maxchan; i++) {
5762 uint32_t nflags = 0;
5763 int cflags = chan_flags;
5764
5765 if (channels[i].flags & IEEE80211_CHAN_DISABLED) {
5766 ic_printf(ic, "%s: Skipping disabled chan "
5767 "[%u/%u/%#x]\n", __func__,
5768 channels[i].hw_value,
5769 channels[i].center_freq, channels[i].flags);
5770 continue;
5771 }
5772 if (channels[i].flags & IEEE80211_CHAN_NO_IR)
5773 nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE);
5774 if (channels[i].flags & IEEE80211_CHAN_RADAR)
5775 nflags |= IEEE80211_CHAN_DFS;
5776 if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ)
5777 cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80);
5778 if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ)
5779 cflags &= ~NET80211_CBW_FLAG_VHT80;
5780 /* XXX hwo to map the remaining enum ieee80211_channel_flags? */
5781 if (channels[i].flags & IEEE80211_CHAN_NO_HT40)
5782 cflags &= ~NET80211_CBW_FLAG_HT40;
5783
5784 error = ieee80211_add_channel_cbw(c, maxchan, n,
5785 channels[i].hw_value, channels[i].center_freq,
5786 channels[i].max_power,
5787 nflags, bands, cflags);
5788 /* net80211::ENOBUFS: *n >= maxchans */
5789 if (error != 0 && error != ENOBUFS)
5790 ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x "
5791 "returned error %d\n",
5792 __func__, channels[i].hw_value,
5793 channels[i].center_freq, channels[i].flags,
5794 nflags, chan_flags, cflags, error);
5795 if (error != 0)
5796 break;
5797 }
5798 }
5799 }
5800
5801 static void *
5802 lkpi_ieee80211_ifalloc(void)
5803 {
5804 struct ieee80211com *ic;
5805
5806 ic = malloc(sizeof(*ic), M_LKPI80211, M_WAITOK | M_ZERO);
5807
5808 /* Setting these happens later when we have device information. */
5809 ic->ic_softc = NULL;
5810 ic->ic_name = "linuxkpi";
5811
5812 return (ic);
5813 }
5814
5815 struct ieee80211_hw *
5816 linuxkpi_ieee80211_alloc_hw(size_t priv_len, const struct ieee80211_ops *ops)
5817 {
5818 struct ieee80211_hw *hw;
5819 struct lkpi_hw *lhw;
5820 struct wiphy *wiphy;
5821 int ac;
5822
5823 /* Get us and the driver data also allocated. */
5824 wiphy = wiphy_new(&linuxkpi_mac80211cfgops, sizeof(*lhw) + priv_len);
5825 if (wiphy == NULL)
5826 return (NULL);
5827
5828 lhw = wiphy_priv(wiphy);
5829 lhw->ops = ops;
5830
5831 LKPI_80211_LHW_SCAN_LOCK_INIT(lhw);
5832 LKPI_80211_LHW_TXQ_LOCK_INIT(lhw);
5833 sx_init_flags(&lhw->lvif_sx, "lhw-lvif", SX_RECURSE | SX_DUPOK);
5834 TAILQ_INIT(&lhw->lvif_head);
5835 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
5836 lhw->txq_generation[ac] = 1;
5837 TAILQ_INIT(&lhw->scheduled_txqs[ac]);
5838 }
5839
5840 /* Chanctx_conf */
5841 INIT_LIST_HEAD(&lhw->lchanctx_list);
5842
5843 /* Deferred RX path. */
5844 LKPI_80211_LHW_RXQ_LOCK_INIT(lhw);
5845 TASK_INIT(&lhw->rxq_task, 0, lkpi_80211_lhw_rxq_task, lhw);
5846 mbufq_init(&lhw->rxq, 32 * NAPI_POLL_WEIGHT);
5847 lhw->rxq_stopped = false;
5848
5849 /*
5850 * XXX-BZ TODO make sure there is a "_null" function to all ops
5851 * not initialized.
5852 */
5853 hw = LHW_TO_HW(lhw);
5854 hw->wiphy = wiphy;
5855 hw->conf.flags |= IEEE80211_CONF_IDLE;
5856 hw->priv = (void *)(lhw + 1);
5857
5858 /* BSD Specific. */
5859 lhw->ic = lkpi_ieee80211_ifalloc();
5860
5861 IMPROVE();
5862
5863 return (hw);
5864 }
5865
5866 void
5867 linuxkpi_ieee80211_iffree(struct ieee80211_hw *hw)
5868 {
5869 struct lkpi_hw *lhw;
5870 struct mbuf *m;
5871
5872 lhw = HW_TO_LHW(hw);
5873 free(lhw->ic, M_LKPI80211);
5874 lhw->ic = NULL;
5875
5876 /*
5877 * Drain the deferred RX path.
5878 */
5879 LKPI_80211_LHW_RXQ_LOCK(lhw);
5880 lhw->rxq_stopped = true;
5881 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
5882
5883 /* Drain taskq, won't be restarted due to rxq_stopped being set. */
5884 while (taskqueue_cancel(taskqueue_thread, &lhw->rxq_task, NULL) != 0)
5885 taskqueue_drain(taskqueue_thread, &lhw->rxq_task);
5886
5887 /* Flush mbufq (make sure to release ni refs!). */
5888 m = mbufq_dequeue(&lhw->rxq);
5889 while (m != NULL) {
5890 #ifdef LKPI_80211_USE_MTAG
5891 struct m_tag *mtag;
5892
5893 mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL);
5894 if (mtag != NULL) {
5895 struct lkpi_80211_tag_rxni *rxni;
5896
5897 rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
5898 ieee80211_free_node(rxni->ni);
5899 }
5900 #else
5901 if (m->m_pkthdr.PH_loc.ptr != NULL) {
5902 struct ieee80211_node *ni;
5903
5904 ni = m->m_pkthdr.PH_loc.ptr;
5905 ieee80211_free_node(ni);
5906 }
5907 #endif
5908 m_freem(m);
5909 m = mbufq_dequeue(&lhw->rxq);
5910 }
5911 KASSERT(mbufq_empty(&lhw->rxq), ("%s: lhw %p has rxq len %d != 0\n",
5912 __func__, lhw, mbufq_len(&lhw->rxq)));
5913 LKPI_80211_LHW_RXQ_LOCK_DESTROY(lhw);
5914
5915 /* Chanctx_conf. */
5916 if (!list_empty_careful(&lhw->lchanctx_list)) {
5917 struct lkpi_chanctx *lchanctx, *next;
5918 struct ieee80211_chanctx_conf *chanctx_conf;
5919
5920 list_for_each_entry_safe(lchanctx, next, &lhw->lchanctx_list, entry) {
5921 if (lchanctx->added_to_drv) {
5922 /* In reality we should panic? */
5923 chanctx_conf = &lchanctx->chanctx_conf;
5924 lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
5925 }
5926 list_del(&lchanctx->entry);
5927 free(lchanctx, M_LKPI80211);
5928 }
5929 }
5930
5931 /* Cleanup more of lhw here or in wiphy_free()? */
5932 LKPI_80211_LHW_TXQ_LOCK_DESTROY(lhw);
5933 LKPI_80211_LHW_SCAN_LOCK_DESTROY(lhw);
5934 sx_destroy(&lhw->lvif_sx);
5935 IMPROVE();
5936 }
5937
5938 void
5939 linuxkpi_set_ieee80211_dev(struct ieee80211_hw *hw, char *name)
5940 {
5941 struct lkpi_hw *lhw;
5942 struct ieee80211com *ic;
5943
5944 lhw = HW_TO_LHW(hw);
5945 ic = lhw->ic;
5946
5947 /* Now set a proper name before ieee80211_ifattach(). */
5948 ic->ic_softc = lhw;
5949 ic->ic_name = name;
5950
5951 /* XXX-BZ do we also need to set wiphy name? */
5952 }
5953
5954 struct ieee80211_hw *
5955 linuxkpi_wiphy_to_ieee80211_hw(struct wiphy *wiphy)
5956 {
5957 struct lkpi_hw *lhw;
5958
5959 lhw = wiphy_priv(wiphy);
5960 return (LHW_TO_HW(lhw));
5961 }
5962
5963 static void
5964 lkpi_radiotap_attach(struct lkpi_hw *lhw)
5965 {
5966 struct ieee80211com *ic;
5967
5968 ic = lhw->ic;
5969 ieee80211_radiotap_attach(ic,
5970 &lhw->rtap_tx.wt_ihdr, sizeof(lhw->rtap_tx),
5971 LKPI_RTAP_TX_FLAGS_PRESENT,
5972 &lhw->rtap_rx.wr_ihdr, sizeof(lhw->rtap_rx),
5973 LKPI_RTAP_RX_FLAGS_PRESENT);
5974 }
5975
5976 int
5977 linuxkpi_ieee80211_ifattach(struct ieee80211_hw *hw)
5978 {
5979 struct ieee80211com *ic;
5980 struct lkpi_hw *lhw;
5981 int band, i;
5982
5983 lhw = HW_TO_LHW(hw);
5984 ic = lhw->ic;
5985
5986 /* We do it this late as wiphy->dev should be set for the name. */
5987 lhw->workq = alloc_ordered_workqueue(wiphy_name(hw->wiphy), 0);
5988 if (lhw->workq == NULL)
5989 return (-EAGAIN);
5990
5991 /* XXX-BZ figure this out how they count his... */
5992 if (!is_zero_ether_addr(hw->wiphy->perm_addr)) {
5993 IEEE80211_ADDR_COPY(ic->ic_macaddr,
5994 hw->wiphy->perm_addr);
5995 } else if (hw->wiphy->n_addresses > 0) {
5996 /* We take the first one. */
5997 IEEE80211_ADDR_COPY(ic->ic_macaddr,
5998 hw->wiphy->addresses[0].addr);
5999 } else {
6000 ic_printf(ic, "%s: warning, no hardware address!\n", __func__);
6001 }
6002
6003 #ifdef __not_yet__
6004 /* See comment in lkpi_80211_txq_tx_one(). */
6005 ic->ic_headroom = hw->extra_tx_headroom;
6006 #endif
6007
6008 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
6009 ic->ic_opmode = IEEE80211_M_STA;
6010
6011 /* Set device capabilities. */
6012 /* XXX-BZ we need to get these from linux80211/drivers and convert. */
6013 ic->ic_caps =
6014 IEEE80211_C_STA |
6015 IEEE80211_C_MONITOR |
6016 IEEE80211_C_WPA | /* WPA/RSN */
6017 #ifdef LKPI_80211_WME
6018 IEEE80211_C_WME |
6019 #endif
6020 #if 0
6021 IEEE80211_C_PMGT |
6022 #endif
6023 IEEE80211_C_SHSLOT | /* short slot time supported */
6024 IEEE80211_C_SHPREAMBLE /* short preamble supported */
6025 ;
6026 #if 0
6027 /* Scanning is a different kind of beast to re-work. */
6028 ic->ic_caps |= IEEE80211_C_BGSCAN;
6029 #endif
6030 if (lhw->ops->hw_scan) {
6031 /*
6032 * Advertise full-offload scanning.
6033 *
6034 * Not limiting to SINGLE_SCAN_ON_ALL_BANDS here as otherwise
6035 * we essentially disable hw_scan for all drivers not setting
6036 * the flag.
6037 */
6038 ic->ic_flags_ext |= IEEE80211_FEXT_SCAN_OFFLOAD;
6039 lhw->scan_flags |= LKPI_LHW_SCAN_HW;
6040 }
6041
6042 /* Does HW support Fragmentation offload? */
6043 if (ieee80211_hw_check(hw, SUPPORTS_TX_FRAG))
6044 ic->ic_flags_ext |= IEEE80211_FEXT_FRAG_OFFLOAD;
6045
6046 /*
6047 * The wiphy variables report bitmasks of avail antennas.
6048 * (*get_antenna) get the current bitmask sets which can be
6049 * altered by (*set_antenna) for some drivers.
6050 * XXX-BZ will the count alone do us much good long-term in net80211?
6051 */
6052 if (hw->wiphy->available_antennas_rx ||
6053 hw->wiphy->available_antennas_tx) {
6054 uint32_t rxs, txs;
6055
6056 if (lkpi_80211_mo_get_antenna(hw, &txs, &rxs) == 0) {
6057 ic->ic_rxstream = bitcount32(rxs);
6058 ic->ic_txstream = bitcount32(txs);
6059 }
6060 }
6061
6062 ic->ic_cryptocaps = 0;
6063 #ifdef LKPI_80211_HW_CRYPTO
6064 if (lkpi_hwcrypto && hw->wiphy->n_cipher_suites > 0) {
6065 uint32_t hwciphers;
6066
6067 hwciphers = 0;
6068 for (i = 0; i < hw->wiphy->n_cipher_suites; i++) {
6069 uint32_t cs;
6070
6071 cs = lkpi_l80211_to_net80211_cyphers(
6072 ic, hw->wiphy->cipher_suites[i]);
6073 if (cs == IEEE80211_CRYPTO_TKIP) {
6074 /*
6075 * We do set this here. We will only find out
6076 * when doing a SET_KEY operation depending on
6077 * what the driver returns.
6078 * net80211::ieee80211_crypto_newkey()
6079 * checks this so we will have to do flags
6080 * surgery later.
6081 */
6082 cs |= IEEE80211_CRYPTO_TKIPMIC;
6083 }
6084 hwciphers |= cs;
6085 }
6086 /*
6087 * (20250415) nothing anywhere in the path checks we actually
6088 * support all these in net80211.
6089 * net80211 supports _256 variants but the ioctl does not.
6090 */
6091 IMPROVE("as net80211 grows more support, enable them");
6092 hwciphers &= (IEEE80211_CRYPTO_WEP |
6093 IEEE80211_CRYPTO_TKIP | IEEE80211_CRYPTO_TKIPMIC |
6094 IEEE80211_CRYPTO_AES_CCM | IEEE80211_CRYPTO_AES_GCM_128);
6095 /*
6096 * We only support CCMP here, so further filter.
6097 * Also permit TKIP if turned on.
6098 */
6099 hwciphers &= (IEEE80211_CRYPTO_AES_CCM |
6100 (lkpi_hwcrypto_tkip ? (IEEE80211_CRYPTO_TKIP |
6101 IEEE80211_CRYPTO_TKIPMIC) : 0));
6102 ieee80211_set_hardware_ciphers(ic, hwciphers);
6103 }
6104 #endif
6105
6106 lkpi_ic_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
6107 ic->ic_channels);
6108
6109 ieee80211_ifattach(ic);
6110
6111 ic->ic_update_mcast = lkpi_ic_update_mcast;
6112 ic->ic_update_promisc = lkpi_ic_update_promisc;
6113 ic->ic_update_chw = lkpi_ic_update_chw;
6114 ic->ic_parent = lkpi_ic_parent;
6115 ic->ic_scan_start = lkpi_ic_scan_start;
6116 ic->ic_scan_end = lkpi_ic_scan_end;
6117 ic->ic_set_channel = lkpi_ic_set_channel;
6118 ic->ic_transmit = lkpi_ic_transmit;
6119 ic->ic_raw_xmit = lkpi_ic_raw_xmit;
6120 ic->ic_vap_create = lkpi_ic_vap_create;
6121 ic->ic_vap_delete = lkpi_ic_vap_delete;
6122 ic->ic_getradiocaps = lkpi_ic_getradiocaps;
6123 ic->ic_wme.wme_update = lkpi_ic_wme_update;
6124
6125 lhw->ic_scan_curchan = ic->ic_scan_curchan;
6126 ic->ic_scan_curchan = lkpi_ic_scan_curchan;
6127 lhw->ic_scan_mindwell = ic->ic_scan_mindwell;
6128 ic->ic_scan_mindwell = lkpi_ic_scan_mindwell;
6129
6130 lhw->ic_node_alloc = ic->ic_node_alloc;
6131 ic->ic_node_alloc = lkpi_ic_node_alloc;
6132 lhw->ic_node_init = ic->ic_node_init;
6133 ic->ic_node_init = lkpi_ic_node_init;
6134 lhw->ic_node_cleanup = ic->ic_node_cleanup;
6135 ic->ic_node_cleanup = lkpi_ic_node_cleanup;
6136 lhw->ic_node_free = ic->ic_node_free;
6137 ic->ic_node_free = lkpi_ic_node_free;
6138
6139 #ifdef LKPI_80211_HT
6140 /*
6141 * Only attach if the driver/firmware supports (*ampdu_action)().
6142 * Otherwise it is in the hands of net80211.
6143 */
6144 if (lhw->ops->ampdu_action != NULL) {
6145 lhw->ic_recv_action = ic->ic_recv_action;
6146 ic->ic_recv_action = lkpi_ic_recv_action;
6147 lhw->ic_send_action = ic->ic_send_action;
6148 ic->ic_send_action = lkpi_ic_send_action;
6149
6150 lhw->ic_ampdu_enable = ic->ic_ampdu_enable;
6151 ic->ic_ampdu_enable = lkpi_ic_ampdu_enable;
6152
6153 lhw->ic_addba_request = ic->ic_addba_request;
6154 ic->ic_addba_request = lkpi_ic_addba_request;
6155 lhw->ic_addba_response = ic->ic_addba_response;
6156 ic->ic_addba_response = lkpi_ic_addba_response;
6157 lhw->ic_addba_stop = ic->ic_addba_stop;
6158 ic->ic_addba_stop = lkpi_ic_addba_stop;
6159 lhw->ic_addba_response_timeout = ic->ic_addba_response_timeout;
6160 ic->ic_addba_response_timeout = lkpi_ic_addba_response_timeout;
6161
6162 lhw->ic_bar_response = ic->ic_bar_response;
6163 ic->ic_bar_response = lkpi_ic_bar_response;
6164
6165 lhw->ic_ampdu_rx_start = ic->ic_ampdu_rx_start;
6166 ic->ic_ampdu_rx_start = lkpi_ic_ampdu_rx_start;
6167 lhw->ic_ampdu_rx_stop = ic->ic_ampdu_rx_stop;
6168 ic->ic_ampdu_rx_stop = lkpi_ic_ampdu_rx_stop;
6169 }
6170 #endif
6171
6172 lkpi_radiotap_attach(lhw);
6173
6174 /*
6175 * Assign the first possible channel for now; seems Realtek drivers
6176 * expect one.
6177 * Also remember the amount of bands we support and the most rates
6178 * in any band so we can scale [(ext) sup rates] IE(s) accordingly.
6179 */
6180 lhw->supbands = lhw->max_rates = 0;
6181 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6182 struct ieee80211_supported_band *supband;
6183 struct linuxkpi_ieee80211_channel *channels;
6184
6185 supband = hw->wiphy->bands[band];
6186 if (supband == NULL || supband->n_channels == 0)
6187 continue;
6188
6189 lhw->supbands++;
6190 lhw->max_rates = max(lhw->max_rates, supband->n_bitrates);
6191
6192 /* If we have a channel, we need to keep counting supbands. */
6193 if (hw->conf.chandef.chan != NULL)
6194 continue;
6195
6196 channels = supband->channels;
6197 for (i = 0; i < supband->n_channels; i++) {
6198
6199 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
6200 continue;
6201
6202 cfg80211_chandef_create(&hw->conf.chandef, &channels[i],
6203 #ifdef LKPI_80211_HT
6204 (ic->ic_flags_ht & IEEE80211_FHT_HT) ? NL80211_CHAN_HT20 :
6205 #endif
6206 NL80211_CHAN_NO_HT);
6207 break;
6208 }
6209 }
6210
6211 IMPROVE("see net80211::ieee80211_chan_init vs. wiphy->bands[].bitrates possibly in lkpi_ic_getradiocaps?");
6212
6213 /* Make sure we do not support more than net80211 is willing to take. */
6214 if (lhw->max_rates > IEEE80211_RATE_MAXSIZE) {
6215 ic_printf(ic, "%s: limiting max_rates %d to %d!\n", __func__,
6216 lhw->max_rates, IEEE80211_RATE_MAXSIZE);
6217 lhw->max_rates = IEEE80211_RATE_MAXSIZE;
6218 }
6219
6220 /*
6221 * The maximum supported bitrates on any band + size for
6222 * DSSS Parameter Set give our per-band IE size.
6223 * SSID is the responsibility of the driver and goes on the side.
6224 * The user specified bits coming from the vap go into the
6225 * "common ies" fields.
6226 */
6227 lhw->scan_ie_len = 2 + IEEE80211_RATE_SIZE;
6228 if (lhw->max_rates > IEEE80211_RATE_SIZE)
6229 lhw->scan_ie_len += 2 + (lhw->max_rates - IEEE80211_RATE_SIZE);
6230
6231 if (hw->wiphy->features & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) {
6232 /*
6233 * net80211 does not seem to support the DSSS Parameter Set but
6234 * some of the drivers insert it so calculate the extra fixed
6235 * space in.
6236 */
6237 lhw->scan_ie_len += 2 + 1;
6238 }
6239
6240 #if defined(LKPI_80211_HT)
6241 if ((ic->ic_htcaps & IEEE80211_HTC_HT) != 0)
6242 lhw->scan_ie_len += sizeof(struct ieee80211_ie_htcap);
6243 #endif
6244 #if defined(LKPI_80211_VHT)
6245 if (IEEE80211_CONF_VHT(ic))
6246 lhw->scan_ie_len += 2 + sizeof(struct ieee80211_vht_cap);
6247 #endif
6248
6249 /* Reduce the max_scan_ie_len "left" by the amount we consume already. */
6250 if (hw->wiphy->max_scan_ie_len > 0) {
6251 if (lhw->scan_ie_len > hw->wiphy->max_scan_ie_len)
6252 goto err;
6253 hw->wiphy->max_scan_ie_len -= lhw->scan_ie_len;
6254 }
6255
6256 if (bootverbose)
6257 ieee80211_announce(ic);
6258
6259 return (0);
6260 err:
6261 IMPROVE("TODO FIXME CLEANUP");
6262 return (-EAGAIN);
6263 }
6264
6265 void
6266 linuxkpi_ieee80211_ifdetach(struct ieee80211_hw *hw)
6267 {
6268 struct lkpi_hw *lhw;
6269 struct ieee80211com *ic;
6270
6271 lhw = HW_TO_LHW(hw);
6272 ic = lhw->ic;
6273 ieee80211_ifdetach(ic);
6274 }
6275
6276 void
6277 linuxkpi_ieee80211_iterate_interfaces(struct ieee80211_hw *hw,
6278 enum ieee80211_iface_iter flags,
6279 void(*iterfunc)(void *, uint8_t *, struct ieee80211_vif *),
6280 void *arg)
6281 {
6282 struct lkpi_hw *lhw;
6283 struct lkpi_vif *lvif;
6284 struct ieee80211_vif *vif;
6285 bool active, atomic, nin_drv;
6286
6287 lhw = HW_TO_LHW(hw);
6288
6289 if (flags & ~(IEEE80211_IFACE_ITER_NORMAL|
6290 IEEE80211_IFACE_ITER_RESUME_ALL|
6291 IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER|
6292 IEEE80211_IFACE_ITER_ACTIVE|IEEE80211_IFACE_ITER__ATOMIC)) {
6293 ic_printf(lhw->ic, "XXX TODO %s flags(%#x) not yet supported.\n",
6294 __func__, flags);
6295 }
6296
6297 active = (flags & IEEE80211_IFACE_ITER_ACTIVE) != 0;
6298 atomic = (flags & IEEE80211_IFACE_ITER__ATOMIC) != 0;
6299 nin_drv = (flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) != 0;
6300
6301 if (atomic)
6302 LKPI_80211_LHW_LVIF_LOCK(lhw);
6303 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
6304 struct ieee80211vap *vap;
6305
6306 vif = LVIF_TO_VIF(lvif);
6307
6308 /*
6309 * If we want "active" interfaces, we need to distinguish on
6310 * whether the driver knows about them or not to be able to
6311 * handle the "resume" case correctly. Skip the ones the
6312 * driver does not know about.
6313 */
6314 if (active && !lvif->added_to_drv &&
6315 (flags & IEEE80211_IFACE_ITER_RESUME_ALL) != 0)
6316 continue;
6317
6318 /*
6319 * If we shall skip interfaces not added to the driver do so
6320 * if we haven't yet.
6321 */
6322 if (nin_drv && !lvif->added_to_drv)
6323 continue;
6324
6325 /*
6326 * Run the iterator function if we are either not asking
6327 * asking for active only or if the VAP is "running".
6328 */
6329 /* XXX-BZ probably should have state in the lvif as well. */
6330 vap = LVIF_TO_VAP(lvif);
6331 if (!active || (vap->iv_state != IEEE80211_S_INIT))
6332 iterfunc(arg, vif->addr, vif);
6333 }
6334 if (atomic)
6335 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
6336 }
6337
6338 static void
6339 lkpi_ieee80211_iterate_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
6340 ieee80211_keyix keyix, struct lkpi_sta *lsta,
6341 void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_vif *,
6342 struct ieee80211_sta *, struct ieee80211_key_conf *, void *),
6343 void *arg)
6344 {
6345 if (!lsta->added_to_drv)
6346 return;
6347
6348 if (lsta->kc[keyix] == NULL)
6349 return;
6350
6351 iterfunc(hw, vif, LSTA_TO_STA(lsta), lsta->kc[keyix], arg);
6352 }
6353
6354 void
6355 linuxkpi_ieee80211_iterate_keys(struct ieee80211_hw *hw,
6356 struct ieee80211_vif *vif,
6357 void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_vif *,
6358 struct ieee80211_sta *, struct ieee80211_key_conf *, void *),
6359 void *arg, bool rcu)
6360 {
6361 struct lkpi_sta *lsta;
6362 struct lkpi_vif *lvif;
6363
6364 lvif = VIF_TO_LVIF(vif);
6365
6366 if (rcu) {
6367 rcu_read_lock_held(); /* XXX-BZ is this correct? */
6368
6369 if (vif == NULL) {
6370 TODO();
6371 } else {
6372 list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
6373 for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc);
6374 keyix++)
6375 lkpi_ieee80211_iterate_keys(hw, vif,
6376 keyix, lsta, iterfunc, arg);
6377 }
6378 }
6379 } else {
6380 TODO("Used by suspend/resume; order of keys as installed to "
6381 "firmware is important; we'll need to rewrite some code for that");
6382 lockdep_assert_wiphy(hw->wiphy);
6383
6384 if (vif == NULL) {
6385 TODO();
6386 } else {
6387 list_for_each_entry(lsta, &lvif->lsta_list, lsta_list) {
6388 for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc);
6389 keyix++)
6390 lkpi_ieee80211_iterate_keys(hw, vif,
6391 keyix, lsta, iterfunc, arg);
6392 }
6393 }
6394 }
6395 }
6396
6397 void
6398 linuxkpi_ieee80211_iterate_chan_contexts(struct ieee80211_hw *hw,
6399 void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_chanctx_conf *,
6400 void *),
6401 void *arg)
6402 {
6403 struct lkpi_hw *lhw;
6404 struct lkpi_chanctx *lchanctx;
6405
6406 KASSERT(hw != NULL && iterfunc != NULL,
6407 ("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg));
6408
6409 lhw = HW_TO_LHW(hw);
6410
6411 rcu_read_lock();
6412 list_for_each_entry_rcu(lchanctx, &lhw->lchanctx_list, entry) {
6413 if (!lchanctx->added_to_drv)
6414 continue;
6415 iterfunc(hw, &lchanctx->chanctx_conf, arg);
6416 }
6417 rcu_read_unlock();
6418 }
6419
6420 void
6421 linuxkpi_ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
6422 void (*iterfunc)(void *, struct ieee80211_sta *), void *arg)
6423 {
6424 struct lkpi_hw *lhw;
6425 struct lkpi_vif *lvif;
6426 struct lkpi_sta *lsta;
6427 struct ieee80211_sta *sta;
6428
6429 KASSERT(hw != NULL && iterfunc != NULL,
6430 ("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg));
6431
6432 lhw = HW_TO_LHW(hw);
6433
6434 LKPI_80211_LHW_LVIF_LOCK(lhw);
6435 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
6436
6437 rcu_read_lock();
6438 list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
6439 if (!lsta->added_to_drv)
6440 continue;
6441 sta = LSTA_TO_STA(lsta);
6442 iterfunc(arg, sta);
6443 }
6444 rcu_read_unlock();
6445 }
6446 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
6447 }
6448
6449 struct linuxkpi_ieee80211_regdomain *
6450 lkpi_get_linuxkpi_ieee80211_regdomain(size_t n)
6451 {
6452 struct linuxkpi_ieee80211_regdomain *regd;
6453
6454 regd = kzalloc(sizeof(*regd) + n * sizeof(struct ieee80211_reg_rule),
6455 GFP_KERNEL);
6456 return (regd);
6457 }
6458
6459 int
6460 linuxkpi_regulatory_set_wiphy_regd_sync(struct wiphy *wiphy,
6461 struct linuxkpi_ieee80211_regdomain *regd)
6462 {
6463 struct lkpi_hw *lhw;
6464 struct ieee80211com *ic;
6465 struct ieee80211_regdomain *rd;
6466
6467 lhw = wiphy_priv(wiphy);
6468 ic = lhw->ic;
6469
6470 rd = &ic->ic_regdomain;
6471 if (rd->isocc[0] == '\0') {
6472 rd->isocc[0] = regd->alpha2[0];
6473 rd->isocc[1] = regd->alpha2[1];
6474 }
6475
6476 TODO();
6477 /* XXX-BZ finish the rest. */
6478
6479 return (0);
6480 }
6481
6482 void
6483 linuxkpi_ieee80211_scan_completed(struct ieee80211_hw *hw,
6484 struct cfg80211_scan_info *info)
6485 {
6486 struct lkpi_hw *lhw;
6487 struct ieee80211com *ic;
6488 struct ieee80211_scan_state *ss;
6489
6490 lhw = wiphy_priv(hw->wiphy);
6491 ic = lhw->ic;
6492 ss = ic->ic_scan;
6493
6494 ieee80211_scan_done(ss->ss_vap);
6495
6496 LKPI_80211_LHW_SCAN_LOCK(lhw);
6497 free(lhw->hw_req, M_LKPI80211);
6498 lhw->hw_req = NULL;
6499 lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING;
6500 wakeup(lhw);
6501 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
6502
6503 return;
6504 }
6505
6506 static void
6507 lkpi_80211_lhw_rxq_rx_one(struct lkpi_hw *lhw, struct mbuf *m)
6508 {
6509 struct ieee80211_node *ni;
6510 #ifdef LKPI_80211_USE_MTAG
6511 struct m_tag *mtag;
6512 #endif
6513 int ok;
6514
6515 ni = NULL;
6516 #ifdef LKPI_80211_USE_MTAG
6517 mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL);
6518 if (mtag != NULL) {
6519 struct lkpi_80211_tag_rxni *rxni;
6520
6521 rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
6522 ni = rxni->ni;
6523 }
6524 #else
6525 if (m->m_pkthdr.PH_loc.ptr != NULL) {
6526 ni = m->m_pkthdr.PH_loc.ptr;
6527 m->m_pkthdr.PH_loc.ptr = NULL;
6528 }
6529 #endif
6530
6531 if (ni != NULL) {
6532 ok = ieee80211_input_mimo(ni, m);
6533 ieee80211_free_node(ni); /* Release the reference. */
6534 if (ok < 0)
6535 m_freem(m);
6536 } else {
6537 ok = ieee80211_input_mimo_all(lhw->ic, m);
6538 /* mbuf got consumed. */
6539 }
6540
6541 #ifdef LINUXKPI_DEBUG_80211
6542 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
6543 printf("TRACE-RX: %s: handled frame type %#0x\n", __func__, ok);
6544 #endif
6545 }
6546
6547 static void
6548 lkpi_80211_lhw_rxq_task(void *ctx, int pending)
6549 {
6550 struct lkpi_hw *lhw;
6551 struct mbufq mq;
6552 struct mbuf *m;
6553
6554 lhw = ctx;
6555
6556 #ifdef LINUXKPI_DEBUG_80211
6557 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
6558 printf("TRACE-RX: %s: lhw %p pending %d mbuf_qlen %d\n",
6559 __func__, lhw, pending, mbufq_len(&lhw->rxq));
6560 #endif
6561
6562 mbufq_init(&mq, IFQ_MAXLEN);
6563
6564 LKPI_80211_LHW_RXQ_LOCK(lhw);
6565 mbufq_concat(&mq, &lhw->rxq);
6566 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
6567
6568 m = mbufq_dequeue(&mq);
6569 while (m != NULL) {
6570 lkpi_80211_lhw_rxq_rx_one(lhw, m);
6571 m = mbufq_dequeue(&mq);
6572 }
6573 }
6574
6575 static void
6576 lkpi_convert_rx_status(struct ieee80211_hw *hw, struct lkpi_sta *lsta,
6577 struct ieee80211_rx_status *rx_status,
6578 struct ieee80211_rx_stats *rx_stats,
6579 uint8_t *rssip)
6580 {
6581 struct ieee80211_supported_band *supband;
6582 struct rate_info rxrate;
6583 int i;
6584 uint8_t rssi;
6585
6586 memset(&rxrate, 0, sizeof(rxrate));
6587 memset(rx_stats, 0, sizeof(*rx_stats));
6588 rx_stats->r_flags = IEEE80211_R_NF | IEEE80211_R_RSSI;
6589 /* XXX-BZ correct hardcoded noise floor, survey data? */
6590 rx_stats->c_nf = -96;
6591 if (ieee80211_hw_check(hw, SIGNAL_DBM) &&
6592 !(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
6593 rssi = rx_status->signal;
6594 else
6595 rssi = rx_stats->c_nf;
6596 /*
6597 * net80211 signal strength data are in .5 dBm units relative to
6598 * the current noise floor (see comment in ieee80211_node.h).
6599 */
6600 rssi -= rx_stats->c_nf;
6601 if (rssip != NULL)
6602 *rssip = rssi;
6603 rx_stats->c_rssi = rssi * 2;
6604 rx_stats->r_flags |= IEEE80211_R_BAND;
6605 rx_stats->c_band =
6606 lkpi_nl80211_band_to_net80211_band(rx_status->band);
6607 rx_stats->r_flags |= IEEE80211_R_FREQ | IEEE80211_R_IEEE;
6608 rx_stats->c_freq = rx_status->freq;
6609 rx_stats->c_ieee = ieee80211_mhz2ieee(rx_stats->c_freq, rx_stats->c_band);
6610
6611 rx_stats->c_rx_tsf = rx_status->mactime;
6612
6613 /* XXX RX_FLAG_MACTIME_IS_RTAP_TS64 ? */
6614 if ((rx_status->flag & RX_FLAG_MACTIME) ==
6615 (RX_FLAG_MACTIME_START|RX_FLAG_MACTIME_END)) {
6616 rx_stats->r_flags |= IEEE80211_R_TSF64;
6617 /* XXX RX_FLAG_MACTIME_PLCP_START ? */
6618 if ((rx_status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_START)
6619 rx_stats->r_flags |= IEEE80211_R_TSF_START;
6620 if ((rx_status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END)
6621 rx_stats->r_flags |= IEEE80211_R_TSF_END;
6622 /* XXX-BZ if TSF_END will net80211 do the unwind of time? */
6623 }
6624
6625 if (rx_status->chains != 0) {
6626 int cc;
6627 int8_t crssi;
6628
6629 rx_stats->c_chain = rx_status->chains;
6630 rx_stats->r_flags |= IEEE80211_R_C_CHAIN;
6631
6632 cc = 0;
6633 for (i = 0; i < nitems(rx_status->chain_signal); i++) {
6634 if (!(rx_status->chains & BIT(i)))
6635 continue;
6636 crssi = rx_status->chain_signal[i];
6637 crssi -= rx_stats->c_nf;
6638 rx_stats->c_rssi_ctl[i] = crssi * 2;
6639 rx_stats->c_rssi_ext[i] = crssi * 2; /* XXX _ext ??? ATH thing? */
6640 /* We currently only have the global noise floor value. */
6641 rx_stats->c_nf_ctl[i] = rx_stats->c_nf;
6642 rx_stats->c_nf_ext[i] = rx_stats->c_nf;
6643 cc++;
6644 }
6645 if (cc > 0)
6646 rx_stats->r_flags |= (IEEE80211_R_C_NF | IEEE80211_R_C_RSSI);
6647 }
6648
6649 /* XXX-NET80211 We are not going to populate c_phytype! */
6650
6651 switch (rx_status->encoding) {
6652 case RX_ENC_LEGACY:
6653 {
6654 uint32_t legacy = 0;
6655
6656 supband = hw->wiphy->bands[rx_status->band];
6657 if (supband != NULL)
6658 legacy = supband->bitrates[rx_status->rate_idx].bitrate;
6659 rx_stats->c_rate = legacy;
6660 rxrate.legacy = legacy;
6661 /* Is there a LinuxKPI way of reporting IEEE80211_RX_F_CCK / _OFDM? */
6662 break;
6663 }
6664 case RX_ENC_HT:
6665 rx_stats->c_pktflags |= IEEE80211_RX_F_HT;
6666 rx_stats->c_rate = rx_status->rate_idx; /* mcs */
6667 rxrate.flags |= RATE_INFO_FLAGS_MCS;
6668 rxrate.mcs = rx_status->rate_idx;
6669 if ((rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI) != 0) {
6670 rx_stats->c_pktflags |= IEEE80211_RX_F_SHORTGI;
6671 rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
6672 }
6673 break;
6674 case RX_ENC_VHT:
6675 rx_stats->c_pktflags |= IEEE80211_RX_F_VHT;
6676 rx_stats->c_rate = rx_status->rate_idx; /* mcs */
6677 rx_stats->c_vhtnss = rx_status->nss;
6678 rxrate.flags |= RATE_INFO_FLAGS_VHT_MCS;
6679 rxrate.mcs = rx_status->rate_idx;
6680 rxrate.nss = rx_status->nss;
6681 if ((rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI) != 0) {
6682 rx_stats->c_pktflags |= IEEE80211_RX_F_SHORTGI;
6683 rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
6684 }
6685 break;
6686 case RX_ENC_HE:
6687 rxrate.flags |= RATE_INFO_FLAGS_HE_MCS;
6688 rxrate.mcs = rx_status->rate_idx;
6689 rxrate.nss = rx_status->nss;
6690 /* XXX TODO */
6691 TODO("net80211 has not matching encoding for %u", rx_status->encoding);
6692 break;
6693 case RX_ENC_EHT:
6694 rxrate.flags |= RATE_INFO_FLAGS_EHT_MCS;
6695 rxrate.mcs = rx_status->rate_idx;
6696 rxrate.nss = rx_status->nss;
6697 /* XXX TODO */
6698 TODO("net80211 has not matching encoding for %u", rx_status->encoding);
6699 break;
6700 }
6701
6702 rxrate.bw = rx_status->bw;
6703 switch (rx_status->bw) {
6704 case RATE_INFO_BW_20:
6705 rx_stats->c_width = IEEE80211_RX_FW_20MHZ;
6706 break;
6707 case RATE_INFO_BW_40:
6708 rx_stats->c_width = IEEE80211_RX_FW_40MHZ;
6709 break;
6710 case RATE_INFO_BW_80:
6711 rx_stats->c_width = IEEE80211_RX_FW_80MHZ;
6712 break;
6713 case RATE_INFO_BW_160:
6714 rx_stats->c_width = IEEE80211_RX_FW_160MHZ;
6715 break;
6716 case RATE_INFO_BW_320:
6717 case RATE_INFO_BW_HE_RU:
6718 case RATE_INFO_BW_EHT_RU:
6719 case RATE_INFO_BW_5:
6720 case RATE_INFO_BW_10:
6721 TODO("net80211 has not matching bandwidth for %u", rx_status->bw);
6722 break;
6723 }
6724
6725 if ((rx_status->enc_flags & RX_ENC_FLAG_LDPC) != 0)
6726 rx_stats->c_pktflags |= IEEE80211_RX_F_LDPC;
6727 if ((rx_status->enc_flags & RX_ENC_FLAG_STBC_MASK) != 0)
6728 rx_stats->c_pktflags |= IEEE80211_RX_F_STBC;
6729
6730 /*
6731 * We only need these for LKPI_80211_HW_CRYPTO in theory but in
6732 * case the hardware does something we do not expect always leave
6733 * these enabled. Leaving this commant as documentation for the || 1.
6734 */
6735 #if defined(LKPI_80211_HW_CRYPTO) || 1
6736 if (rx_status->flag & RX_FLAG_DECRYPTED) {
6737 rx_stats->c_pktflags |= IEEE80211_RX_F_DECRYPTED;
6738 /* Only valid if decrypted is set. */
6739 if (rx_status->flag & RX_FLAG_PN_VALIDATED)
6740 rx_stats->c_pktflags |= IEEE80211_RX_F_PN_VALIDATED;
6741 }
6742 if (rx_status->flag & RX_FLAG_IV_STRIPPED)
6743 rx_stats->c_pktflags |= IEEE80211_RX_F_IV_STRIP;
6744 if (rx_status->flag & RX_FLAG_ICV_STRIPPED)
6745 rx_stats->c_pktflags |= IEEE80211_RX_F_ICV_STRIP;
6746 if (rx_status->flag & RX_FLAG_MIC_STRIPPED)
6747 rx_stats->c_pktflags |= IEEE80211_RX_F_MIC_STRIP;
6748 if (rx_status->flag & RX_FLAG_MMIC_STRIPPED)
6749 rx_stats->c_pktflags |= IEEE80211_RX_F_MMIC_STRIP;
6750 if (rx_status->flag & RX_FLAG_MMIC_ERROR)
6751 rx_stats->c_pktflags |= IEEE80211_RX_F_FAIL_MMIC;
6752 if (rx_status->flag & RX_FLAG_FAILED_FCS_CRC)
6753 rx_stats->c_pktflags |= IEEE80211_RX_F_FAIL_FCSCRC;
6754 #endif
6755
6756 if (lsta != NULL) {
6757 memcpy(&lsta->sinfo.rxrate, &rxrate, sizeof(rxrate));
6758 lsta->sinfo.filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE);
6759 }
6760 }
6761
6762 /* For %list see comment towards the end of the function. */
6763 void
6764 linuxkpi_ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
6765 struct ieee80211_sta *sta, struct napi_struct *napi __unused,
6766 struct list_head *list __unused)
6767 {
6768 struct lkpi_hw *lhw;
6769 struct ieee80211com *ic;
6770 struct mbuf *m;
6771 struct skb_shared_info *shinfo;
6772 struct ieee80211_rx_status *rx_status;
6773 struct ieee80211_rx_stats rx_stats;
6774 struct ieee80211_node *ni;
6775 struct ieee80211vap *vap;
6776 struct ieee80211_hdr *hdr;
6777 struct lkpi_sta *lsta;
6778 int i, offset, ok, error;
6779 uint8_t rssi;
6780 bool is_beacon;
6781
6782 lhw = HW_TO_LHW(hw);
6783 ic = lhw->ic;
6784
6785 if (skb->len < 2) {
6786 /* Need 80211 stats here. */
6787 counter_u64_add(ic->ic_ierrors, 1);
6788 IMPROVE();
6789 goto err;
6790 }
6791
6792 /*
6793 * For now do the data copy; we can later improve things. Might even
6794 * have an mbuf backing the skb data then?
6795 */
6796 m = m_get2(skb->len, M_NOWAIT, MT_DATA, M_PKTHDR);
6797 if (m == NULL) {
6798 counter_u64_add(ic->ic_ierrors, 1);
6799 goto err;
6800 }
6801 m_copyback(m, 0, skb->tail - skb->data, skb->data);
6802
6803 shinfo = skb_shinfo(skb);
6804 offset = m->m_len;
6805 for (i = 0; i < shinfo->nr_frags; i++) {
6806 m_copyback(m, offset, shinfo->frags[i].size,
6807 (uint8_t *)linux_page_address(shinfo->frags[i].page) +
6808 shinfo->frags[i].offset);
6809 offset += shinfo->frags[i].size;
6810 }
6811
6812 rx_status = IEEE80211_SKB_RXCB(skb);
6813
6814 hdr = (void *)skb->data;
6815 is_beacon = ieee80211_is_beacon(hdr->frame_control);
6816
6817 #ifdef LINUXKPI_DEBUG_80211
6818 if (is_beacon && (linuxkpi_debug_80211 & D80211_TRACE_RX_BEACONS) == 0)
6819 goto no_trace_beacons;
6820
6821 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
6822 printf("TRACE-RX: %s: skb %p l/d/t-len (%u/%u/%u) "
6823 "h %p d %p t %p e %p sh %p (%u) m %p plen %u len %u%s\n",
6824 __func__, skb, skb->len, skb->data_len,
6825 skb->truesize, skb->head, skb->data, skb->tail, skb->end,
6826 shinfo, shinfo->nr_frags,
6827 m, m->m_pkthdr.len, m->m_len, is_beacon ? " beacon" : "");
6828
6829 if (linuxkpi_debug_80211 & D80211_TRACE_RX_DUMP)
6830 hexdump(mtod(m, const void *), m->m_len, "RX (raw) ", 0);
6831
6832 /* Implement a dump_rxcb() !!! */
6833 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
6834 printf("TRACE-RX: %s: RXCB: %ju %ju %u, %b, %u, %#0x, %#0x, "
6835 "%u band %u, %u { %d %d %d %d }, %d, %#x %#x %#x %#x %u %u %u\n",
6836 __func__,
6837 (uintmax_t)rx_status->boottime_ns,
6838 (uintmax_t)rx_status->mactime,
6839 rx_status->device_timestamp,
6840 rx_status->flag, IEEE80211_RX_STATUS_FLAGS_BITS,
6841 rx_status->freq,
6842 rx_status->bw,
6843 rx_status->encoding,
6844 rx_status->ampdu_reference,
6845 rx_status->band,
6846 rx_status->chains,
6847 rx_status->chain_signal[0],
6848 rx_status->chain_signal[1],
6849 rx_status->chain_signal[2],
6850 rx_status->chain_signal[3],
6851 rx_status->signal,
6852 rx_status->enc_flags,
6853 rx_status->he_dcm,
6854 rx_status->he_gi,
6855 rx_status->he_ru,
6856 rx_status->zero_length_psdu_type,
6857 rx_status->nss,
6858 rx_status->rate_idx);
6859 no_trace_beacons:
6860 #endif
6861
6862 lsta = NULL;
6863 if (sta != NULL) {
6864 lsta = STA_TO_LSTA(sta);
6865 ni = ieee80211_ref_node(lsta->ni);
6866 } else {
6867 struct ieee80211_frame_min *wh;
6868
6869 wh = mtod(m, struct ieee80211_frame_min *);
6870 ni = ieee80211_find_rxnode(ic, wh);
6871 if (ni != NULL)
6872 lsta = ni->ni_drv_data;
6873 }
6874
6875 rssi = 0;
6876 lkpi_convert_rx_status(hw, lsta, rx_status, &rx_stats, &rssi);
6877
6878 ok = ieee80211_add_rx_params(m, &rx_stats);
6879 if (ok == 0) {
6880 m_freem(m);
6881 counter_u64_add(ic->ic_ierrors, 1);
6882 goto err;
6883 }
6884
6885 if (ni != NULL)
6886 vap = ni->ni_vap;
6887 else
6888 /*
6889 * XXX-BZ can we improve this by looking at the frame hdr
6890 * or other meta-data passed up?
6891 */
6892 vap = TAILQ_FIRST(&ic->ic_vaps);
6893
6894 #ifdef LINUXKPI_DEBUG_80211
6895 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
6896 printf("TRACE-RX: %s: sta %p lsta %p state %d ni %p vap %p%s\n",
6897 __func__, sta, lsta, (lsta != NULL) ? lsta->state : -1,
6898 ni, vap, is_beacon ? " beacon" : "");
6899 #endif
6900
6901 if (ni != NULL && vap != NULL && is_beacon &&
6902 rx_status->device_timestamp > 0 &&
6903 m->m_pkthdr.len >= sizeof(struct ieee80211_frame)) {
6904 struct lkpi_vif *lvif;
6905 struct ieee80211_vif *vif;
6906 struct ieee80211_frame *wh;
6907
6908 wh = mtod(m, struct ieee80211_frame *);
6909 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))
6910 goto skip_device_ts;
6911
6912 lvif = VAP_TO_LVIF(vap);
6913 vif = LVIF_TO_VIF(lvif);
6914
6915 IMPROVE("TIMING_BEACON_ONLY?");
6916 /* mac80211 specific (not net80211) so keep it here. */
6917 vif->bss_conf.sync_device_ts = rx_status->device_timestamp;
6918 /*
6919 * net80211 should take care of the other information (sync_tsf,
6920 * sync_dtim_count) as otherwise we need to parse the beacon.
6921 */
6922 skip_device_ts:
6923 ;
6924 }
6925
6926 if (vap != NULL && vap->iv_state > IEEE80211_S_INIT &&
6927 ieee80211_radiotap_active_vap(vap)) {
6928 struct lkpi_radiotap_rx_hdr *rtap;
6929
6930 rtap = &lhw->rtap_rx;
6931 rtap->wr_tsft = rx_status->device_timestamp;
6932 rtap->wr_flags = 0;
6933 if (rx_status->enc_flags & RX_ENC_FLAG_SHORTPRE)
6934 rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
6935 if (rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI)
6936 rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTGI;
6937 #if 0 /* .. or it does not given we strip it below. */
6938 if (ieee80211_hw_check(hw, RX_INCLUDES_FCS))
6939 rtap->wr_flags |= IEEE80211_RADIOTAP_F_FCS;
6940 #endif
6941 if (rx_status->flag & RX_FLAG_FAILED_FCS_CRC)
6942 rtap->wr_flags |= IEEE80211_RADIOTAP_F_BADFCS;
6943 rtap->wr_rate = 0;
6944 IMPROVE();
6945 /* XXX TODO status->encoding / rate_index / bw */
6946 rtap->wr_chan_freq = htole16(rx_stats.c_freq);
6947 if (ic->ic_curchan->ic_ieee == rx_stats.c_ieee)
6948 rtap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
6949 rtap->wr_dbm_antsignal = rssi;
6950 rtap->wr_dbm_antnoise = rx_stats.c_nf;
6951 }
6952
6953 if (ieee80211_hw_check(hw, RX_INCLUDES_FCS))
6954 m_adj(m, -IEEE80211_CRC_LEN);
6955
6956 #if 0
6957 if (list != NULL) {
6958 /*
6959 * Normally this would be queued up and delivered by
6960 * netif_receive_skb_list(), napi_gro_receive(), or the like.
6961 * See mt76::mac80211.c as only current possible consumer.
6962 */
6963 IMPROVE("we simply pass the packet to net80211 to deal with.");
6964 }
6965 #endif
6966
6967 /* Attach meta-information to the mbuf for the deferred RX path. */
6968 if (ni != NULL) {
6969 #ifdef LKPI_80211_USE_MTAG
6970 struct m_tag *mtag;
6971 struct lkpi_80211_tag_rxni *rxni;
6972
6973 mtag = m_tag_alloc(MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI,
6974 sizeof(*rxni), IEEE80211_M_NOWAIT);
6975 if (mtag == NULL) {
6976 m_freem(m);
6977 counter_u64_add(ic->ic_ierrors, 1);
6978 goto err;
6979 }
6980 rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
6981 rxni->ni = ni; /* We hold a reference. */
6982 m_tag_prepend(m, mtag);
6983 #else
6984 m->m_pkthdr.PH_loc.ptr = ni; /* We hold a reference. */
6985 #endif
6986 }
6987
6988 LKPI_80211_LHW_RXQ_LOCK(lhw);
6989 if (lhw->rxq_stopped) {
6990 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
6991 m_freem(m);
6992 counter_u64_add(ic->ic_ierrors, 1);
6993 goto err;
6994 }
6995
6996 error = mbufq_enqueue(&lhw->rxq, m);
6997 if (error != 0) {
6998 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
6999 m_freem(m);
7000 counter_u64_add(ic->ic_ierrors, 1);
7001 #ifdef LINUXKPI_DEBUG_80211
7002 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
7003 ic_printf(ni->ni_ic, "%s: mbufq_enqueue failed: %d\n",
7004 __func__, error);
7005 #endif
7006 goto err;
7007 }
7008 taskqueue_enqueue(taskqueue_thread, &lhw->rxq_task);
7009 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
7010
7011 IMPROVE();
7012
7013 err:
7014 /* The skb is ours so we can free it :-) */
7015 kfree_skb(skb);
7016 }
7017
7018 uint8_t
7019 linuxkpi_ieee80211_get_tid(struct ieee80211_hdr *hdr, bool nonqos_ok)
7020 {
7021 const struct ieee80211_frame *wh;
7022 uint8_t tid;
7023
7024 /* Linux seems to assume this is a QOS-Data-Frame */
7025 KASSERT(nonqos_ok || ieee80211_is_data_qos(hdr->frame_control),
7026 ("%s: hdr %p fc %#06x not qos_data\n", __func__, hdr,
7027 hdr->frame_control));
7028
7029 wh = (const struct ieee80211_frame *)hdr;
7030 tid = ieee80211_gettid(wh);
7031 KASSERT(nonqos_ok || tid == (tid & IEEE80211_QOS_TID), ("%s: tid %u "
7032 "not expected (%u?)\n", __func__, tid, IEEE80211_NONQOS_TID));
7033
7034 return (tid);
7035 }
7036
7037 /* -------------------------------------------------------------------------- */
7038
7039 static void
7040 lkpi_wiphy_work(struct work_struct *work)
7041 {
7042 struct lkpi_wiphy *lwiphy;
7043 struct wiphy *wiphy;
7044 struct wiphy_work *wk;
7045
7046 lwiphy = container_of(work, struct lkpi_wiphy, wwk);
7047 wiphy = LWIPHY_TO_WIPHY(lwiphy);
7048
7049 wiphy_lock(wiphy);
7050
7051 LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
7052 wk = list_first_entry_or_null(&lwiphy->wwk_list, struct wiphy_work, entry);
7053 /* If there is nothing we do nothing. */
7054 if (wk == NULL) {
7055 LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
7056 wiphy_unlock(wiphy);
7057 return;
7058 }
7059 list_del_init(&wk->entry);
7060
7061 /* More work to do? */
7062 if (!list_empty(&lwiphy->wwk_list))
7063 schedule_work(work);
7064 LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
7065
7066 /* Finally call the (*wiphy_work_fn)() function. */
7067 wk->fn(wiphy, wk);
7068
7069 wiphy_unlock(wiphy);
7070 }
7071
7072 void
7073 linuxkpi_wiphy_work_queue(struct wiphy *wiphy, struct wiphy_work *wwk)
7074 {
7075 struct lkpi_wiphy *lwiphy;
7076
7077 lwiphy = WIPHY_TO_LWIPHY(wiphy);
7078
7079 LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
7080 /* Do not double-queue. */
7081 if (list_empty(&wwk->entry))
7082 list_add_tail(&wwk->entry, &lwiphy->wwk_list);
7083 LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
7084
7085 /*
7086 * See how ieee80211_queue_work() work continues in Linux or if things
7087 * migrate here over time?
7088 * Use a system queue from linux/workqueue.h for now.
7089 */
7090 queue_work(system_wq, &lwiphy->wwk);
7091 }
7092
7093 void
7094 linuxkpi_wiphy_work_cancel(struct wiphy *wiphy, struct wiphy_work *wwk)
7095 {
7096 struct lkpi_wiphy *lwiphy;
7097
7098 lwiphy = WIPHY_TO_LWIPHY(wiphy);
7099
7100 LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
7101 /* Only cancel if queued. */
7102 if (!list_empty(&wwk->entry))
7103 list_del_init(&wwk->entry);
7104 LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
7105 }
7106
7107 void
7108 linuxkpi_wiphy_work_flush(struct wiphy *wiphy, struct wiphy_work *wwk)
7109 {
7110 struct lkpi_wiphy *lwiphy;
7111 struct wiphy_work *wk;
7112
7113 lwiphy = WIPHY_TO_LWIPHY(wiphy);
7114 LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
7115 /* If wwk is unset, flush everything; called when wiphy is shut down. */
7116 if (wwk != NULL && list_empty(&wwk->entry)) {
7117 LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
7118 return;
7119 }
7120
7121 while (!list_empty(&lwiphy->wwk_list)) {
7122
7123 wk = list_first_entry(&lwiphy->wwk_list, struct wiphy_work,
7124 entry);
7125 list_del_init(&wk->entry);
7126 LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
7127 wk->fn(wiphy, wk);
7128 LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
7129 if (wk == wwk)
7130 break;
7131 }
7132 LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
7133 }
7134
7135 void
7136 lkpi_wiphy_delayed_work_timer(struct timer_list *tl)
7137 {
7138 struct wiphy_delayed_work *wdwk;
7139
7140 wdwk = from_timer(wdwk, tl, timer);
7141 wiphy_work_queue(wdwk->wiphy, &wdwk->work);
7142 }
7143
7144 void
7145 linuxkpi_wiphy_delayed_work_queue(struct wiphy *wiphy,
7146 struct wiphy_delayed_work *wdwk, unsigned long delay)
7147 {
7148 if (delay == 0) {
7149 /* Run right away. */
7150 del_timer(&wdwk->timer);
7151 wiphy_work_queue(wiphy, &wdwk->work);
7152 } else {
7153 wdwk->wiphy = wiphy;
7154 mod_timer(&wdwk->timer, jiffies + delay);
7155 }
7156 }
7157
7158 void
7159 linuxkpi_wiphy_delayed_work_cancel(struct wiphy *wiphy,
7160 struct wiphy_delayed_work *wdwk)
7161 {
7162 del_timer_sync(&wdwk->timer);
7163 wiphy_work_cancel(wiphy, &wdwk->work);
7164 }
7165
7166 /* -------------------------------------------------------------------------- */
7167
7168 struct wiphy *
7169 linuxkpi_wiphy_new(const struct cfg80211_ops *ops, size_t priv_len)
7170 {
7171 struct lkpi_wiphy *lwiphy;
7172 struct wiphy *wiphy;
7173
7174 lwiphy = kzalloc(sizeof(*lwiphy) + priv_len, GFP_KERNEL);
7175 if (lwiphy == NULL)
7176 return (NULL);
7177 lwiphy->ops = ops;
7178
7179 LKPI_80211_LWIPHY_WORK_LOCK_INIT(lwiphy);
7180 INIT_LIST_HEAD(&lwiphy->wwk_list);
7181 INIT_WORK(&lwiphy->wwk, lkpi_wiphy_work);
7182
7183 wiphy = LWIPHY_TO_WIPHY(lwiphy);
7184
7185 mutex_init(&wiphy->mtx);
7186 TODO();
7187
7188 return (wiphy);
7189 }
7190
7191 void
7192 linuxkpi_wiphy_free(struct wiphy *wiphy)
7193 {
7194 struct lkpi_wiphy *lwiphy;
7195
7196 if (wiphy == NULL)
7197 return;
7198
7199 linuxkpi_wiphy_work_flush(wiphy, NULL);
7200 mutex_destroy(&wiphy->mtx);
7201
7202 lwiphy = WIPHY_TO_LWIPHY(wiphy);
7203 LKPI_80211_LWIPHY_WORK_LOCK_DESTROY(lwiphy);
7204
7205 kfree(lwiphy);
7206 }
7207
7208 static uint32_t
7209 lkpi_cfg80211_calculate_bitrate_ht(struct rate_info *rate)
7210 {
7211 TODO("cfg80211_calculate_bitrate_ht");
7212 return (rate->legacy);
7213 }
7214
7215 static uint32_t
7216 lkpi_cfg80211_calculate_bitrate_vht(struct rate_info *rate)
7217 {
7218 TODO("cfg80211_calculate_bitrate_vht");
7219 return (rate->legacy);
7220 }
7221
7222 uint32_t
7223 linuxkpi_cfg80211_calculate_bitrate(struct rate_info *rate)
7224 {
7225
7226 /* Beware: order! */
7227 if (rate->flags & RATE_INFO_FLAGS_MCS)
7228 return (lkpi_cfg80211_calculate_bitrate_ht(rate));
7229
7230 if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)
7231 return (lkpi_cfg80211_calculate_bitrate_vht(rate));
7232
7233 IMPROVE("HE/EHT/...");
7234
7235 return (rate->legacy);
7236 }
7237
7238 uint32_t
7239 linuxkpi_ieee80211_channel_to_frequency(uint32_t channel,
7240 enum nl80211_band band)
7241 {
7242
7243 switch (band) {
7244 case NL80211_BAND_2GHZ:
7245 return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_2GHZ));
7246 break;
7247 case NL80211_BAND_5GHZ:
7248 return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_5GHZ));
7249 break;
7250 default:
7251 /* XXX abort, retry, error, panic? */
7252 break;
7253 }
7254
7255 return (0);
7256 }
7257
7258 uint32_t
7259 linuxkpi_ieee80211_frequency_to_channel(uint32_t freq, uint32_t flags __unused)
7260 {
7261
7262 return (ieee80211_mhz2ieee(freq, 0));
7263 }
7264
7265 #if 0
7266 static struct lkpi_sta *
7267 lkpi_find_lsta_by_ni(struct lkpi_vif *lvif, struct ieee80211_node *ni)
7268 {
7269 struct lkpi_sta *lsta, *temp;
7270
7271 rcu_read_lock();
7272 list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
7273 if (lsta->ni == ni) {
7274 rcu_read_unlock();
7275 return (lsta);
7276 }
7277 }
7278 rcu_read_unlock();
7279
7280 return (NULL);
7281 }
7282 #endif
7283
7284 struct ieee80211_sta *
7285 linuxkpi_ieee80211_find_sta(struct ieee80211_vif *vif, const u8 *peer)
7286 {
7287 struct lkpi_vif *lvif;
7288 struct lkpi_sta *lsta;
7289 struct ieee80211_sta *sta;
7290
7291 lvif = VIF_TO_LVIF(vif);
7292
7293 rcu_read_lock();
7294 list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
7295 sta = LSTA_TO_STA(lsta);
7296 if (IEEE80211_ADDR_EQ(sta->addr, peer)) {
7297 rcu_read_unlock();
7298 return (sta);
7299 }
7300 }
7301 rcu_read_unlock();
7302 return (NULL);
7303 }
7304
7305 struct ieee80211_sta *
7306 linuxkpi_ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw,
7307 const uint8_t *addr, const uint8_t *ourvifaddr)
7308 {
7309 struct lkpi_hw *lhw;
7310 struct lkpi_vif *lvif;
7311 struct lkpi_sta *lsta;
7312 struct ieee80211_vif *vif;
7313 struct ieee80211_sta *sta;
7314
7315 lhw = wiphy_priv(hw->wiphy);
7316 sta = NULL;
7317
7318 LKPI_80211_LHW_LVIF_LOCK(lhw);
7319 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
7320
7321 /* XXX-BZ check our address from the vif. */
7322
7323 vif = LVIF_TO_VIF(lvif);
7324 if (ourvifaddr != NULL &&
7325 !IEEE80211_ADDR_EQ(vif->addr, ourvifaddr))
7326 continue;
7327 sta = linuxkpi_ieee80211_find_sta(vif, addr);
7328 if (sta != NULL)
7329 break;
7330 }
7331 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
7332
7333 if (sta != NULL) {
7334 lsta = STA_TO_LSTA(sta);
7335 if (!lsta->added_to_drv)
7336 return (NULL);
7337 }
7338
7339 return (sta);
7340 }
7341
7342 struct sk_buff *
7343 linuxkpi_ieee80211_tx_dequeue(struct ieee80211_hw *hw,
7344 struct ieee80211_txq *txq)
7345 {
7346 struct lkpi_txq *ltxq;
7347 struct lkpi_vif *lvif;
7348 struct sk_buff *skb;
7349
7350 skb = NULL;
7351 ltxq = TXQ_TO_LTXQ(txq);
7352 ltxq->seen_dequeue = true;
7353
7354 if (ltxq->stopped)
7355 goto stopped;
7356
7357 lvif = VIF_TO_LVIF(ltxq->txq.vif);
7358 if (lvif->hw_queue_stopped[ltxq->txq.ac]) {
7359 ltxq->stopped = true;
7360 goto stopped;
7361 }
7362
7363 IMPROVE("hw(TX_FRAG_LIST)");
7364
7365 LKPI_80211_LTXQ_LOCK(ltxq);
7366 skb = skb_dequeue(<xq->skbq);
7367 LKPI_80211_LTXQ_UNLOCK(ltxq);
7368
7369 stopped:
7370 return (skb);
7371 }
7372
7373 void
7374 linuxkpi_ieee80211_txq_get_depth(struct ieee80211_txq *txq,
7375 unsigned long *frame_cnt, unsigned long *byte_cnt)
7376 {
7377 struct lkpi_txq *ltxq;
7378 struct sk_buff *skb;
7379 unsigned long fc, bc;
7380
7381 ltxq = TXQ_TO_LTXQ(txq);
7382
7383 fc = bc = 0;
7384 LKPI_80211_LTXQ_LOCK(ltxq);
7385 skb_queue_walk(<xq->skbq, skb) {
7386 fc++;
7387 bc += skb->len;
7388 }
7389 LKPI_80211_LTXQ_UNLOCK(ltxq);
7390 if (frame_cnt)
7391 *frame_cnt = fc;
7392 if (byte_cnt)
7393 *byte_cnt = bc;
7394
7395 /* Validate that this is doing the correct thing. */
7396 /* Should we keep track on en/dequeue? */
7397 IMPROVE();
7398 }
7399
7400 /*
7401 * We are called from ieee80211_free_txskb() or ieee80211_tx_status().
7402 * The latter tries to derive the success status from the info flags
7403 * passed back from the driver. rawx_mit() saves the ni on the m and the
7404 * m on the skb for us to be able to give feedback to net80211.
7405 */
7406 static void
7407 _lkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb,
7408 int status)
7409 {
7410 struct ieee80211_node *ni;
7411 struct mbuf *m;
7412
7413 m = skb->m;
7414 skb->m = NULL;
7415
7416 if (m != NULL) {
7417 ni = m->m_pkthdr.PH_loc.ptr;
7418 /* Status: 0 is ok, != 0 is error. */
7419 ieee80211_tx_complete(ni, m, status);
7420 /* ni & mbuf were consumed. */
7421 }
7422 }
7423
7424 void
7425 linuxkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb,
7426 int status)
7427 {
7428
7429 _lkpi_ieee80211_free_txskb(hw, skb, status);
7430 kfree_skb(skb);
7431 }
7432
7433 void
7434 linuxkpi_ieee80211_tx_status_ext(struct ieee80211_hw *hw,
7435 struct ieee80211_tx_status *txstat)
7436 {
7437 struct sk_buff *skb;
7438 struct ieee80211_tx_info *info;
7439 struct ieee80211_ratectl_tx_status txs;
7440 struct ieee80211_node *ni;
7441 int status;
7442
7443 skb = txstat->skb;
7444 if (skb->m != NULL) {
7445 struct mbuf *m;
7446
7447 m = skb->m;
7448 ni = m->m_pkthdr.PH_loc.ptr;
7449 memset(&txs, 0, sizeof(txs));
7450 } else {
7451 ni = NULL;
7452 }
7453
7454 info = txstat->info;
7455 if (info->flags & IEEE80211_TX_STAT_ACK) {
7456 status = 0; /* No error. */
7457 txs.status = IEEE80211_RATECTL_TX_SUCCESS;
7458 } else {
7459 status = 1;
7460 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED;
7461 }
7462
7463 if (ni != NULL) {
7464 txs.pktlen = skb->len;
7465 txs.flags |= IEEE80211_RATECTL_STATUS_PKTLEN;
7466 if (info->status.rates[0].count > 1) {
7467 txs.long_retries = info->status.rates[0].count - 1; /* 1 + retries in drivers. */
7468 txs.flags |= IEEE80211_RATECTL_STATUS_LONG_RETRY;
7469 }
7470 #if 0 /* Unused in net80211 currently. */
7471 /* XXX-BZ convert check .flags for MCS/VHT/.. */
7472 txs.final_rate = info->status.rates[0].idx;
7473 txs.flags |= IEEE80211_RATECTL_STATUS_FINAL_RATE;
7474 #endif
7475 if (info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID) {
7476 txs.rssi = info->status.ack_signal; /* XXX-BZ CONVERT? */
7477 txs.flags |= IEEE80211_RATECTL_STATUS_RSSI;
7478 }
7479
7480 IMPROVE("only update rate if needed but that requires us to get a proper rate from mo_sta_statistics");
7481 ieee80211_ratectl_tx_complete(ni, &txs);
7482 ieee80211_ratectl_rate(ni->ni_vap->iv_bss, NULL, 0);
7483
7484 #ifdef LINUXKPI_DEBUG_80211
7485 if (linuxkpi_debug_80211 & D80211_TRACE_TX) {
7486 printf("TX-RATE: %s: long_retries %d\n", __func__,
7487 txs.long_retries);
7488 }
7489 #endif
7490 }
7491
7492 #ifdef LINUXKPI_DEBUG_80211
7493 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
7494 printf("TX-STATUS: %s: hw %p skb %p status %d : flags %#x "
7495 "band %u hw_queue %u tx_time_est %d : "
7496 "rates [ %u %u %#x, %u %u %#x, %u %u %#x, %u %u %#x ] "
7497 "ack_signal %u ampdu_ack_len %u ampdu_len %u antenna %u "
7498 "tx_time %u flags %#x "
7499 "status_driver_data [ %p %p ]\n",
7500 __func__, hw, skb, status, info->flags,
7501 info->band, info->hw_queue, info->tx_time_est,
7502 info->status.rates[0].idx, info->status.rates[0].count,
7503 info->status.rates[0].flags,
7504 info->status.rates[1].idx, info->status.rates[1].count,
7505 info->status.rates[1].flags,
7506 info->status.rates[2].idx, info->status.rates[2].count,
7507 info->status.rates[2].flags,
7508 info->status.rates[3].idx, info->status.rates[3].count,
7509 info->status.rates[3].flags,
7510 info->status.ack_signal, info->status.ampdu_ack_len,
7511 info->status.ampdu_len, info->status.antenna,
7512 info->status.tx_time, info->status.flags,
7513 info->status.status_driver_data[0],
7514 info->status.status_driver_data[1]);
7515 #endif
7516
7517 if (txstat->free_list) {
7518 _lkpi_ieee80211_free_txskb(hw, skb, status);
7519 list_add_tail(&skb->list, txstat->free_list);
7520 } else {
7521 linuxkpi_ieee80211_free_txskb(hw, skb, status);
7522 }
7523 }
7524
7525 void
7526 linuxkpi_ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
7527 {
7528 struct ieee80211_tx_status status;
7529
7530 memset(&status, 0, sizeof(status));
7531 status.info = IEEE80211_SKB_CB(skb);
7532 status.skb = skb;
7533 /* sta, n_rates, rates, free_list? */
7534
7535 ieee80211_tx_status_ext(hw, &status);
7536 }
7537
7538 /*
7539 * This is an internal bandaid for the moment for the way we glue
7540 * skbs and mbufs together for TX. Once we have skbs backed by
7541 * mbufs this should go away.
7542 * This is a public function but kept on the private KPI (lkpi_)
7543 * and is not exposed by a header file.
7544 */
7545 static void
7546 lkpi_ieee80211_free_skb_mbuf(void *p)
7547 {
7548 struct ieee80211_node *ni;
7549 struct mbuf *m;
7550
7551 if (p == NULL)
7552 return;
7553
7554 m = (struct mbuf *)p;
7555 M_ASSERTPKTHDR(m);
7556
7557 ni = m->m_pkthdr.PH_loc.ptr;
7558 m->m_pkthdr.PH_loc.ptr = NULL;
7559 if (ni != NULL)
7560 ieee80211_free_node(ni);
7561 m_freem(m);
7562 }
7563
7564 void
7565 linuxkpi_ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
7566 struct delayed_work *w, int delay)
7567 {
7568 struct lkpi_hw *lhw;
7569
7570 /* Need to make sure hw is in a stable (non-suspended) state. */
7571 IMPROVE();
7572
7573 lhw = HW_TO_LHW(hw);
7574 queue_delayed_work(lhw->workq, w, delay);
7575 }
7576
7577 void
7578 linuxkpi_ieee80211_queue_work(struct ieee80211_hw *hw,
7579 struct work_struct *w)
7580 {
7581 struct lkpi_hw *lhw;
7582
7583 /* Need to make sure hw is in a stable (non-suspended) state. */
7584 IMPROVE();
7585
7586 lhw = HW_TO_LHW(hw);
7587 queue_work(lhw->workq, w);
7588 }
7589
7590 struct sk_buff *
7591 linuxkpi_ieee80211_probereq_get(struct ieee80211_hw *hw, uint8_t *addr,
7592 uint8_t *ssid, size_t ssid_len, size_t tailroom)
7593 {
7594 struct sk_buff *skb;
7595 struct ieee80211_frame *wh;
7596 uint8_t *p;
7597 size_t len;
7598
7599 len = sizeof(*wh);
7600 len += 2 + ssid_len;
7601
7602 skb = dev_alloc_skb(hw->extra_tx_headroom + len + tailroom);
7603 if (skb == NULL)
7604 return (NULL);
7605
7606 skb_reserve(skb, hw->extra_tx_headroom);
7607
7608 wh = skb_put_zero(skb, sizeof(*wh));
7609 wh->i_fc[0] = IEEE80211_FC0_VERSION_0;
7610 wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PROBE_REQ | IEEE80211_FC0_TYPE_MGT;
7611 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr);
7612 IEEE80211_ADDR_COPY(wh->i_addr2, addr);
7613 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr);
7614
7615 p = skb_put(skb, 2 + ssid_len);
7616 *p++ = IEEE80211_ELEMID_SSID;
7617 *p++ = ssid_len;
7618 if (ssid_len > 0)
7619 memcpy(p, ssid, ssid_len);
7620
7621 return (skb);
7622 }
7623
7624 struct sk_buff *
7625 linuxkpi_ieee80211_pspoll_get(struct ieee80211_hw *hw,
7626 struct ieee80211_vif *vif)
7627 {
7628 struct lkpi_vif *lvif;
7629 struct ieee80211vap *vap;
7630 struct sk_buff *skb;
7631 struct ieee80211_frame_pspoll *psp;
7632 uint16_t v;
7633
7634 skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*psp));
7635 if (skb == NULL)
7636 return (NULL);
7637
7638 skb_reserve(skb, hw->extra_tx_headroom);
7639
7640 lvif = VIF_TO_LVIF(vif);
7641 vap = LVIF_TO_VAP(lvif);
7642
7643 psp = skb_put_zero(skb, sizeof(*psp));
7644 psp->i_fc[0] = IEEE80211_FC0_VERSION_0;
7645 psp->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PS_POLL | IEEE80211_FC0_TYPE_CTL;
7646 v = htole16(vif->cfg.aid | 1<<15 | 1<<16);
7647 memcpy(&psp->i_aid, &v, sizeof(v));
7648 IEEE80211_ADDR_COPY(psp->i_bssid, vap->iv_bss->ni_macaddr);
7649 IEEE80211_ADDR_COPY(psp->i_ta, vif->addr);
7650
7651 return (skb);
7652 }
7653
7654 struct sk_buff *
7655 linuxkpi_ieee80211_nullfunc_get(struct ieee80211_hw *hw,
7656 struct ieee80211_vif *vif, int linkid, bool qos)
7657 {
7658 struct lkpi_vif *lvif;
7659 struct ieee80211vap *vap;
7660 struct sk_buff *skb;
7661 struct ieee80211_frame *nullf;
7662
7663 IMPROVE("linkid");
7664
7665 skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*nullf));
7666 if (skb == NULL)
7667 return (NULL);
7668
7669 skb_reserve(skb, hw->extra_tx_headroom);
7670
7671 lvif = VIF_TO_LVIF(vif);
7672 vap = LVIF_TO_VAP(lvif);
7673
7674 nullf = skb_put_zero(skb, sizeof(*nullf));
7675 nullf->i_fc[0] = IEEE80211_FC0_VERSION_0;
7676 nullf->i_fc[0] |= IEEE80211_FC0_SUBTYPE_NODATA | IEEE80211_FC0_TYPE_DATA;
7677 nullf->i_fc[1] = IEEE80211_FC1_DIR_TODS;
7678
7679 IEEE80211_ADDR_COPY(nullf->i_addr1, vap->iv_bss->ni_bssid);
7680 IEEE80211_ADDR_COPY(nullf->i_addr2, vif->addr);
7681 IEEE80211_ADDR_COPY(nullf->i_addr3, vap->iv_bss->ni_macaddr);
7682
7683 return (skb);
7684 }
7685
7686 struct wireless_dev *
7687 linuxkpi_ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
7688 {
7689 struct lkpi_vif *lvif;
7690
7691 lvif = VIF_TO_LVIF(vif);
7692 return (&lvif->wdev);
7693 }
7694
7695 void
7696 linuxkpi_ieee80211_connection_loss(struct ieee80211_vif *vif)
7697 {
7698 struct lkpi_vif *lvif;
7699 struct ieee80211vap *vap;
7700 enum ieee80211_state nstate;
7701 int arg;
7702
7703 lvif = VIF_TO_LVIF(vif);
7704 vap = LVIF_TO_VAP(lvif);
7705
7706 /*
7707 * Go to init; otherwise we need to elaborately check state and
7708 * handle accordingly, e.g., if in RUN we could call iv_bmiss.
7709 * Let the statemachine handle all neccessary changes.
7710 */
7711 nstate = IEEE80211_S_INIT;
7712 arg = 0; /* Not a valid reason. */
7713
7714 ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s\n", __func__,
7715 vif, vap, ieee80211_state_name[vap->iv_state]);
7716 ieee80211_new_state(vap, nstate, arg);
7717 }
7718
7719 void
7720 linuxkpi_ieee80211_beacon_loss(struct ieee80211_vif *vif)
7721 {
7722 struct lkpi_vif *lvif;
7723 struct ieee80211vap *vap;
7724
7725 lvif = VIF_TO_LVIF(vif);
7726 vap = LVIF_TO_VAP(lvif);
7727
7728 ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s\n", __func__,
7729 vif, vap, ieee80211_state_name[vap->iv_state]);
7730 ieee80211_beacon_miss(vap->iv_ic);
7731 }
7732
7733 /* -------------------------------------------------------------------------- */
7734
7735 void
7736 linuxkpi_ieee80211_stop_queue(struct ieee80211_hw *hw, int qnum)
7737 {
7738 struct lkpi_hw *lhw;
7739 struct lkpi_vif *lvif;
7740 struct ieee80211_vif *vif;
7741 int ac_count, ac;
7742
7743 KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n",
7744 __func__, qnum, hw->queues, hw));
7745
7746 lhw = wiphy_priv(hw->wiphy);
7747
7748 /* See lkpi_ic_vap_create(). */
7749 if (hw->queues >= IEEE80211_NUM_ACS)
7750 ac_count = IEEE80211_NUM_ACS;
7751 else
7752 ac_count = 1;
7753
7754 LKPI_80211_LHW_LVIF_LOCK(lhw);
7755 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
7756
7757 vif = LVIF_TO_VIF(lvif);
7758 for (ac = 0; ac < ac_count; ac++) {
7759 IMPROVE_TXQ("LOCKING");
7760 if (qnum == vif->hw_queue[ac]) {
7761 #ifdef LINUXKPI_DEBUG_80211
7762 /*
7763 * For now log this to better understand
7764 * how this is supposed to work.
7765 */
7766 if (lvif->hw_queue_stopped[ac] &&
7767 (linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0)
7768 ic_printf(lhw->ic, "%s:%d: lhw %p hw %p "
7769 "lvif %p vif %p ac %d qnum %d already "
7770 "stopped\n", __func__, __LINE__,
7771 lhw, hw, lvif, vif, ac, qnum);
7772 #endif
7773 lvif->hw_queue_stopped[ac] = true;
7774 }
7775 }
7776 }
7777 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
7778 }
7779
7780 void
7781 linuxkpi_ieee80211_stop_queues(struct ieee80211_hw *hw)
7782 {
7783 int i;
7784
7785 IMPROVE_TXQ("Locking; do we need further info?");
7786 for (i = 0; i < hw->queues; i++)
7787 linuxkpi_ieee80211_stop_queue(hw, i);
7788 }
7789
7790
7791 static void
7792 lkpi_ieee80211_wake_queues(struct ieee80211_hw *hw, int hwq)
7793 {
7794 struct lkpi_hw *lhw;
7795 struct lkpi_vif *lvif;
7796 struct lkpi_sta *lsta;
7797 int ac_count, ac, tid;
7798
7799 /* See lkpi_ic_vap_create(). */
7800 if (hw->queues >= IEEE80211_NUM_ACS)
7801 ac_count = IEEE80211_NUM_ACS;
7802 else
7803 ac_count = 1;
7804
7805 lhw = wiphy_priv(hw->wiphy);
7806
7807 IMPROVE_TXQ("Locking");
7808 LKPI_80211_LHW_LVIF_LOCK(lhw);
7809 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
7810 struct ieee80211_vif *vif;
7811
7812 vif = LVIF_TO_VIF(lvif);
7813 for (ac = 0; ac < ac_count; ac++) {
7814
7815 if (hwq == vif->hw_queue[ac]) {
7816
7817 /* XXX-BZ what about software scan? */
7818
7819 #ifdef LINUXKPI_DEBUG_80211
7820 /*
7821 * For now log this to better understand
7822 * how this is supposed to work.
7823 */
7824 if (!lvif->hw_queue_stopped[ac] &&
7825 (linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0)
7826 ic_printf(lhw->ic, "%s:%d: lhw %p hw %p "
7827 "lvif %p vif %p ac %d hw_q not stopped\n",
7828 __func__, __LINE__,
7829 lhw, hw, lvif, vif, ac);
7830 #endif
7831 lvif->hw_queue_stopped[ac] = false;
7832
7833 rcu_read_lock();
7834 list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
7835 struct ieee80211_sta *sta;
7836
7837 sta = LSTA_TO_STA(lsta);
7838 for (tid = 0; tid < nitems(sta->txq); tid++) {
7839 struct lkpi_txq *ltxq;
7840
7841 if (sta->txq[tid] == NULL)
7842 continue;
7843
7844 if (sta->txq[tid]->ac != ac)
7845 continue;
7846
7847 ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
7848 if (!ltxq->stopped)
7849 continue;
7850
7851 ltxq->stopped = false;
7852
7853 /* XXX-BZ see when this explodes with all the locking. taskq? */
7854 lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid]);
7855 }
7856 }
7857 rcu_read_unlock();
7858 }
7859 }
7860 }
7861 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
7862 }
7863
7864 void
7865 linuxkpi_ieee80211_wake_queues(struct ieee80211_hw *hw)
7866 {
7867 int i;
7868
7869 IMPROVE_TXQ("Is this all/enough here?");
7870 for (i = 0; i < hw->queues; i++)
7871 lkpi_ieee80211_wake_queues(hw, i);
7872 }
7873
7874 void
7875 linuxkpi_ieee80211_wake_queue(struct ieee80211_hw *hw, int qnum)
7876 {
7877
7878 KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n",
7879 __func__, qnum, hw->queues, hw));
7880
7881 lkpi_ieee80211_wake_queues(hw, qnum);
7882 }
7883
7884 /* This is just hardware queues. */
7885 void
7886 linuxkpi_ieee80211_txq_schedule_start(struct ieee80211_hw *hw, uint8_t ac)
7887 {
7888 struct lkpi_hw *lhw;
7889
7890 lhw = HW_TO_LHW(hw);
7891
7892 IMPROVE_TXQ("Are there reasons why we wouldn't schedule?");
7893 IMPROVE_TXQ("LOCKING");
7894 if (++lhw->txq_generation[ac] == 0)
7895 lhw->txq_generation[ac]++;
7896 }
7897
7898 struct ieee80211_txq *
7899 linuxkpi_ieee80211_next_txq(struct ieee80211_hw *hw, uint8_t ac)
7900 {
7901 struct lkpi_hw *lhw;
7902 struct ieee80211_txq *txq;
7903 struct lkpi_txq *ltxq;
7904
7905 lhw = HW_TO_LHW(hw);
7906 txq = NULL;
7907
7908 IMPROVE_TXQ("LOCKING");
7909
7910 /* Check that we are scheduled. */
7911 if (lhw->txq_generation[ac] == 0)
7912 goto out;
7913
7914 ltxq = TAILQ_FIRST(&lhw->scheduled_txqs[ac]);
7915 if (ltxq == NULL)
7916 goto out;
7917 if (ltxq->txq_generation == lhw->txq_generation[ac])
7918 goto out;
7919
7920 ltxq->txq_generation = lhw->txq_generation[ac];
7921 TAILQ_REMOVE(&lhw->scheduled_txqs[ac], ltxq, txq_entry);
7922 txq = <xq->txq;
7923 TAILQ_ELEM_INIT(ltxq, txq_entry);
7924
7925 out:
7926 return (txq);
7927 }
7928
7929 void linuxkpi_ieee80211_schedule_txq(struct ieee80211_hw *hw,
7930 struct ieee80211_txq *txq, bool withoutpkts)
7931 {
7932 struct lkpi_hw *lhw;
7933 struct lkpi_txq *ltxq;
7934 bool ltxq_empty;
7935
7936 ltxq = TXQ_TO_LTXQ(txq);
7937
7938 IMPROVE_TXQ("LOCKING");
7939
7940 /* Only schedule if work to do or asked to anyway. */
7941 LKPI_80211_LTXQ_LOCK(ltxq);
7942 ltxq_empty = skb_queue_empty(<xq->skbq);
7943 LKPI_80211_LTXQ_UNLOCK(ltxq);
7944 if (!withoutpkts && ltxq_empty)
7945 goto out;
7946
7947 /*
7948 * Make sure we do not double-schedule. We do this by checking tqe_prev,
7949 * the previous entry in our tailq. tqe_prev is always valid if this entry
7950 * is queued, tqe_next may be NULL if this is the only element in the list.
7951 */
7952 if (ltxq->txq_entry.tqe_prev != NULL)
7953 goto out;
7954
7955 lhw = HW_TO_LHW(hw);
7956 TAILQ_INSERT_TAIL(&lhw->scheduled_txqs[txq->ac], ltxq, txq_entry);
7957 out:
7958 return;
7959 }
7960
7961 void
7962 linuxkpi_ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
7963 struct ieee80211_txq *txq)
7964 {
7965 struct lkpi_hw *lhw;
7966 struct ieee80211_txq *ntxq;
7967 struct ieee80211_tx_control control;
7968 struct sk_buff *skb;
7969
7970 lhw = HW_TO_LHW(hw);
7971
7972 LKPI_80211_LHW_TXQ_LOCK(lhw);
7973 ieee80211_txq_schedule_start(hw, txq->ac);
7974 do {
7975 ntxq = ieee80211_next_txq(hw, txq->ac);
7976 if (ntxq == NULL)
7977 break;
7978
7979 memset(&control, 0, sizeof(control));
7980 control.sta = ntxq->sta;
7981 do {
7982 skb = linuxkpi_ieee80211_tx_dequeue(hw, ntxq);
7983 if (skb == NULL)
7984 break;
7985 lkpi_80211_mo_tx(hw, &control, skb);
7986 } while(1);
7987
7988 ieee80211_return_txq(hw, ntxq, false);
7989 } while (1);
7990 ieee80211_txq_schedule_end(hw, txq->ac);
7991 LKPI_80211_LHW_TXQ_UNLOCK(lhw);
7992 }
7993
7994 /* -------------------------------------------------------------------------- */
7995
7996 struct lkpi_cfg80211_bss {
7997 u_int refcnt;
7998 struct cfg80211_bss bss;
7999 };
8000
8001 struct lkpi_cfg80211_get_bss_iter_lookup {
8002 struct wiphy *wiphy;
8003 struct linuxkpi_ieee80211_channel *chan;
8004 const uint8_t *bssid;
8005 const uint8_t *ssid;
8006 size_t ssid_len;
8007 enum ieee80211_bss_type bss_type;
8008 enum ieee80211_privacy privacy;
8009
8010 /*
8011 * Something to store a copy of the result as the net80211 scan cache
8012 * is not refoucnted so a scan entry might go away any time.
8013 */
8014 bool match;
8015 struct cfg80211_bss *bss;
8016 };
8017
8018 static void
8019 lkpi_cfg80211_get_bss_iterf(void *arg, const struct ieee80211_scan_entry *se)
8020 {
8021 struct lkpi_cfg80211_get_bss_iter_lookup *lookup;
8022 size_t ielen;
8023
8024 lookup = arg;
8025
8026 /* Do not try to find another match. */
8027 if (lookup->match)
8028 return;
8029
8030 /* Nothing to store result. */
8031 if (lookup->bss == NULL)
8032 return;
8033
8034 if (lookup->privacy != IEEE80211_PRIVACY_ANY) {
8035 /* if (se->se_capinfo & IEEE80211_CAPINFO_PRIVACY) */
8036 /* We have no idea what to compare to as the drivers only request ANY */
8037 return;
8038 }
8039
8040 if (lookup->bss_type != IEEE80211_BSS_TYPE_ANY) {
8041 /* if (se->se_capinfo & (IEEE80211_CAPINFO_IBSS|IEEE80211_CAPINFO_ESS)) */
8042 /* We have no idea what to compare to as the drivers only request ANY */
8043 return;
8044 }
8045
8046 if (lookup->chan != NULL) {
8047 struct linuxkpi_ieee80211_channel *chan;
8048
8049 chan = linuxkpi_ieee80211_get_channel(lookup->wiphy,
8050 se->se_chan->ic_freq);
8051 if (chan == NULL || chan != lookup->chan)
8052 return;
8053 }
8054
8055 if (lookup->bssid && !IEEE80211_ADDR_EQ(lookup->bssid, se->se_bssid))
8056 return;
8057
8058 if (lookup->ssid) {
8059 if (lookup->ssid_len != se->se_ssid[1] ||
8060 se->se_ssid[1] == 0)
8061 return;
8062 if (memcmp(lookup->ssid, se->se_ssid+2, lookup->ssid_len) != 0)
8063 return;
8064 }
8065
8066 ielen = se->se_ies.len;
8067
8068 lookup->bss->ies = malloc(sizeof(*lookup->bss->ies) + ielen,
8069 M_LKPI80211, M_NOWAIT | M_ZERO);
8070 if (lookup->bss->ies == NULL)
8071 return;
8072
8073 lookup->bss->ies->data = (uint8_t *)lookup->bss->ies + sizeof(*lookup->bss->ies);
8074 lookup->bss->ies->len = ielen;
8075 if (ielen)
8076 memcpy(lookup->bss->ies->data, se->se_ies.data, ielen);
8077
8078 lookup->match = true;
8079 }
8080
8081 struct cfg80211_bss *
8082 linuxkpi_cfg80211_get_bss(struct wiphy *wiphy, struct linuxkpi_ieee80211_channel *chan,
8083 const uint8_t *bssid, const uint8_t *ssid, size_t ssid_len,
8084 enum ieee80211_bss_type bss_type, enum ieee80211_privacy privacy)
8085 {
8086 struct lkpi_cfg80211_bss *lbss;
8087 struct lkpi_cfg80211_get_bss_iter_lookup lookup;
8088 struct lkpi_hw *lhw;
8089 struct ieee80211vap *vap;
8090
8091 lhw = wiphy_priv(wiphy);
8092
8093 /* Let's hope we can alloc. */
8094 lbss = malloc(sizeof(*lbss), M_LKPI80211, M_NOWAIT | M_ZERO);
8095 if (lbss == NULL) {
8096 ic_printf(lhw->ic, "%s: alloc failed.\n", __func__);
8097 return (NULL);
8098 }
8099
8100 lookup.wiphy = wiphy;
8101 lookup.chan = chan;
8102 lookup.bssid = bssid;
8103 lookup.ssid = ssid;
8104 lookup.ssid_len = ssid_len;
8105 lookup.bss_type = bss_type;
8106 lookup.privacy = privacy;
8107 lookup.match = false;
8108 lookup.bss = &lbss->bss;
8109
8110 IMPROVE("Iterate over all VAPs comparing perm_addr and addresses?");
8111 vap = TAILQ_FIRST(&lhw->ic->ic_vaps);
8112 ieee80211_scan_iterate(vap, lkpi_cfg80211_get_bss_iterf, &lookup);
8113 if (!lookup.match) {
8114 free(lbss, M_LKPI80211);
8115 return (NULL);
8116 }
8117
8118 refcount_init(&lbss->refcnt, 1);
8119 return (&lbss->bss);
8120 }
8121
8122 void
8123 linuxkpi_cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss)
8124 {
8125 struct lkpi_cfg80211_bss *lbss;
8126
8127 lbss = container_of(bss, struct lkpi_cfg80211_bss, bss);
8128
8129 /* Free everything again on refcount ... */
8130 if (refcount_release(&lbss->refcnt)) {
8131 free(lbss->bss.ies, M_LKPI80211);
8132 free(lbss, M_LKPI80211);
8133 }
8134 }
8135
8136 void
8137 linuxkpi_cfg80211_bss_flush(struct wiphy *wiphy)
8138 {
8139 struct lkpi_hw *lhw;
8140 struct ieee80211com *ic;
8141 struct ieee80211vap *vap;
8142
8143 lhw = wiphy_priv(wiphy);
8144 ic = lhw->ic;
8145
8146 /*
8147 * If we haven't called ieee80211_ifattach() yet
8148 * or there is no VAP, there are no scans to flush.
8149 */
8150 if (ic == NULL ||
8151 (lhw->sc_flags & LKPI_MAC80211_DRV_STARTED) == 0)
8152 return;
8153
8154 /* Should only happen on the current one? Not seen it late enough. */
8155 IEEE80211_LOCK(ic);
8156 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
8157 ieee80211_scan_flush(vap);
8158 IEEE80211_UNLOCK(ic);
8159 }
8160
8161 /* -------------------------------------------------------------------------- */
8162
8163 /*
8164 * hw->conf get initialized/set in various places for us:
8165 * - linuxkpi_ieee80211_alloc_hw(): flags
8166 * - linuxkpi_ieee80211_ifattach(): chandef
8167 * - lkpi_ic_vap_create(): listen_interval
8168 * - lkpi_ic_set_channel(): chandef, flags
8169 */
8170
8171 int lkpi_80211_update_chandef(struct ieee80211_hw *hw,
8172 struct ieee80211_chanctx_conf *new)
8173 {
8174 struct cfg80211_chan_def *cd;
8175 uint32_t changed;
8176 int error;
8177
8178 changed = 0;
8179 if (new == NULL || new->def.chan == NULL)
8180 cd = NULL;
8181 else
8182 cd = &new->def;
8183
8184 if (cd && cd->chan != hw->conf.chandef.chan) {
8185 /* Copy; the chan pointer is fine and will stay valid. */
8186 hw->conf.chandef = *cd;
8187 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
8188 }
8189 IMPROVE("IEEE80211_CONF_CHANGE_PS, IEEE80211_CONF_CHANGE_POWER");
8190
8191 if (changed == 0)
8192 return (0);
8193
8194 error = lkpi_80211_mo_config(hw, changed);
8195 return (error);
8196 }
8197
8198 /* -------------------------------------------------------------------------- */
8199
8200 MODULE_VERSION(linuxkpi_wlan, 1);
8201 MODULE_DEPEND(linuxkpi_wlan, linuxkpi, 1, 1, 1);
8202 MODULE_DEPEND(linuxkpi_wlan, wlan, 1, 1, 1);
8203