1 /*
2 * Copyright (c) 2009-2013 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 #include "opt_inet.h"
36
37 #ifdef TCP_OFFLOAD
38 #include <sys/types.h>
39 #include <sys/malloc.h>
40 #include <sys/socket.h>
41 #include <sys/socketvar.h>
42 #include <sys/sockio.h>
43 #include <sys/taskqueue.h>
44 #include <netinet/in.h>
45 #include <net/route.h>
46
47 #include <netinet/in_systm.h>
48 #include <netinet/in_pcb.h>
49 #include <netinet/ip.h>
50 #include <netinet/in_fib.h>
51 #include <netinet/ip_var.h>
52 #include <netinet/tcp_var.h>
53 #include <netinet/tcp.h>
54 #include <netinet/tcpip.h>
55
56 #include <netinet/toecore.h>
57
58 struct sge_iq;
59 struct rss_header;
60 #include <linux/types.h>
61 #include "offload.h"
62 #include "tom/t4_tom.h"
63
64 #define TOEPCB(so) ((struct toepcb *)(so_sototcpcb((so))->t_toe))
65
66 #include "iw_cxgbe.h"
67 #include <linux/module.h>
68 #include <linux/workqueue.h>
69 #include <linux/notifier.h>
70 #include <linux/inetdevice.h>
71 #include <linux/if_vlan.h>
72 #include <net/netevent.h>
73
74 static spinlock_t req_lock;
75 static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list;
76 static struct work_struct c4iw_task;
77 static struct workqueue_struct *c4iw_taskq;
78 static LIST_HEAD(timeout_list);
79 static spinlock_t timeout_lock;
80
81 static void process_req(struct work_struct *ctx);
82 static void start_ep_timer(struct c4iw_ep *ep);
83 static void stop_ep_timer(struct c4iw_ep *ep);
84 static int set_tcpinfo(struct c4iw_ep *ep);
85 static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc);
86 static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate);
87 static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate);
88 static void *alloc_ep(int size, gfp_t flags);
89 void __free_ep(struct c4iw_ep_common *epc);
90 static int find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port,
91 __be16 peer_port, u8 tos, struct nhop4_extended *pnh4);
92 static int close_socket(struct c4iw_ep_common *epc, int close);
93 static int shutdown_socket(struct c4iw_ep_common *epc);
94 static void abort_socket(struct c4iw_ep *ep);
95 static void send_mpa_req(struct c4iw_ep *ep);
96 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen);
97 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen);
98 static void close_complete_upcall(struct c4iw_ep *ep, int status);
99 static int abort_connection(struct c4iw_ep *ep);
100 static void peer_close_upcall(struct c4iw_ep *ep);
101 static void peer_abort_upcall(struct c4iw_ep *ep);
102 static void connect_reply_upcall(struct c4iw_ep *ep, int status);
103 static int connect_request_upcall(struct c4iw_ep *ep);
104 static void established_upcall(struct c4iw_ep *ep);
105 static void process_mpa_reply(struct c4iw_ep *ep);
106 static void process_mpa_request(struct c4iw_ep *ep);
107 static void process_peer_close(struct c4iw_ep *ep);
108 static void process_conn_error(struct c4iw_ep *ep);
109 static void process_close_complete(struct c4iw_ep *ep);
110 static void ep_timeout(unsigned long arg);
111 static void init_sock(struct c4iw_ep_common *epc);
112 static void process_data(struct c4iw_ep *ep);
113 static void process_connected(struct c4iw_ep *ep);
114 static struct socket * dequeue_socket(struct socket *head, struct sockaddr_in **remote, struct c4iw_ep *child_ep);
115 static void process_newconn(struct c4iw_ep *parent_ep);
116 static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag);
117 static void process_socket_event(struct c4iw_ep *ep);
118 static void release_ep_resources(struct c4iw_ep *ep);
119
120 #define START_EP_TIMER(ep) \
121 do { \
122 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \
123 __func__, __LINE__, (ep)); \
124 start_ep_timer(ep); \
125 } while (0)
126
127 #define STOP_EP_TIMER(ep) \
128 do { \
129 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \
130 __func__, __LINE__, (ep)); \
131 stop_ep_timer(ep); \
132 } while (0)
133
134 #ifdef KTR
135 static char *states[] = {
136 "idle",
137 "listen",
138 "connecting",
139 "mpa_wait_req",
140 "mpa_req_sent",
141 "mpa_req_rcvd",
142 "mpa_rep_sent",
143 "fpdu_mode",
144 "aborting",
145 "closing",
146 "moribund",
147 "dead",
148 NULL,
149 };
150 #endif
151
152 static void
process_req(struct work_struct * ctx)153 process_req(struct work_struct *ctx)
154 {
155 struct c4iw_ep_common *epc;
156
157 spin_lock(&req_lock);
158 while (!TAILQ_EMPTY(&req_list)) {
159 epc = TAILQ_FIRST(&req_list);
160 TAILQ_REMOVE(&req_list, epc, entry);
161 epc->entry.tqe_prev = NULL;
162 spin_unlock(&req_lock);
163 if (epc->so)
164 process_socket_event((struct c4iw_ep *)epc);
165 c4iw_put_ep(epc);
166 spin_lock(&req_lock);
167 }
168 spin_unlock(&req_lock);
169 }
170
171 /*
172 * XXX: doesn't belong here in the iWARP driver.
173 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is
174 * set. Is this a valid assumption for active open?
175 */
176 static int
set_tcpinfo(struct c4iw_ep * ep)177 set_tcpinfo(struct c4iw_ep *ep)
178 {
179 struct socket *so = ep->com.so;
180 struct inpcb *inp = sotoinpcb(so);
181 struct tcpcb *tp;
182 struct toepcb *toep;
183 int rc = 0;
184
185 INP_WLOCK(inp);
186 tp = intotcpcb(inp);
187 if ((tp->t_flags & TF_TOE) == 0) {
188 rc = EINVAL;
189 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n",
190 __func__, so, ep);
191 goto done;
192 }
193 toep = TOEPCB(so);
194
195 ep->hwtid = toep->tid;
196 ep->snd_seq = tp->snd_nxt;
197 ep->rcv_seq = tp->rcv_nxt;
198 ep->emss = max(tp->t_maxseg, 128);
199 done:
200 INP_WUNLOCK(inp);
201 return (rc);
202
203 }
204
205 static int
find_route(__be32 local_ip,__be32 peer_ip,__be16 local_port,__be16 peer_port,u8 tos,struct nhop4_extended * pnh4)206 find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port,
207 __be16 peer_port, u8 tos, struct nhop4_extended *pnh4)
208 {
209 struct in_addr addr;
210 int err;
211
212 CTR5(KTR_IW_CXGBE, "%s:frtB %x, %x, %d, %d", __func__, local_ip,
213 peer_ip, ntohs(local_port), ntohs(peer_port));
214
215 addr.s_addr = peer_ip;
216 err = fib4_lookup_nh_ext(RT_DEFAULT_FIB, addr, NHR_REF, 0, pnh4);
217
218 CTR2(KTR_IW_CXGBE, "%s:frtE %d", __func__, err);
219 return err;
220 }
221
222 static int
close_socket(struct c4iw_ep_common * epc,int close)223 close_socket(struct c4iw_ep_common *epc, int close)
224 {
225 struct socket *so = epc->so;
226 int rc;
227
228 CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc, so,
229 states[epc->state]);
230
231 SOCK_LOCK(so);
232 soupcall_clear(so, SO_RCV);
233 SOCK_UNLOCK(so);
234
235 if (close)
236 rc = soclose(so);
237 else
238 rc = soshutdown(so, SHUT_WR | SHUT_RD);
239 epc->so = NULL;
240
241 return (rc);
242 }
243
244 static int
shutdown_socket(struct c4iw_ep_common * epc)245 shutdown_socket(struct c4iw_ep_common *epc)
246 {
247
248 CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc->so, epc,
249 states[epc->state]);
250
251 return (soshutdown(epc->so, SHUT_WR));
252 }
253
254 static void
abort_socket(struct c4iw_ep * ep)255 abort_socket(struct c4iw_ep *ep)
256 {
257 struct sockopt sopt;
258 int rc;
259 struct linger l;
260
261 CTR4(KTR_IW_CXGBE, "%s ep %p so %p state %s", __func__, ep, ep->com.so,
262 states[ep->com.state]);
263
264 l.l_onoff = 1;
265 l.l_linger = 0;
266
267 /* linger_time of 0 forces RST to be sent */
268 sopt.sopt_dir = SOPT_SET;
269 sopt.sopt_level = SOL_SOCKET;
270 sopt.sopt_name = SO_LINGER;
271 sopt.sopt_val = (caddr_t)&l;
272 sopt.sopt_valsize = sizeof l;
273 sopt.sopt_td = NULL;
274 rc = sosetopt(ep->com.so, &sopt);
275 if (rc) {
276 log(LOG_ERR, "%s: can't set linger to 0, no RST! err %d\n",
277 __func__, rc);
278 }
279 }
280
281 static void
process_peer_close(struct c4iw_ep * ep)282 process_peer_close(struct c4iw_ep *ep)
283 {
284 struct c4iw_qp_attributes attrs;
285 int disconnect = 1;
286 int release = 0;
287
288 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep,
289 ep->com.so, states[ep->com.state]);
290
291 mutex_lock(&ep->com.mutex);
292 switch (ep->com.state) {
293
294 case MPA_REQ_WAIT:
295 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT CLOSING",
296 __func__, ep);
297 __state_set(&ep->com, CLOSING);
298 break;
299
300 case MPA_REQ_SENT:
301 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT CLOSING",
302 __func__, ep);
303 __state_set(&ep->com, DEAD);
304 connect_reply_upcall(ep, -ECONNABORTED);
305
306 disconnect = 0;
307 STOP_EP_TIMER(ep);
308 close_socket(&ep->com, 0);
309 ep->com.cm_id->rem_ref(ep->com.cm_id);
310 ep->com.cm_id = NULL;
311 ep->com.qp = NULL;
312 release = 1;
313 break;
314
315 case MPA_REQ_RCVD:
316
317 /*
318 * We're gonna mark this puppy DEAD, but keep
319 * the reference on it until the ULP accepts or
320 * rejects the CR.
321 */
322 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING",
323 __func__, ep);
324 __state_set(&ep->com, CLOSING);
325 c4iw_get_ep(&ep->com);
326 break;
327
328 case MPA_REP_SENT:
329 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING",
330 __func__, ep);
331 __state_set(&ep->com, CLOSING);
332 break;
333
334 case FPDU_MODE:
335 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING",
336 __func__, ep);
337 START_EP_TIMER(ep);
338 __state_set(&ep->com, CLOSING);
339 attrs.next_state = C4IW_QP_STATE_CLOSING;
340 c4iw_modify_qp(ep->com.dev, ep->com.qp,
341 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
342 peer_close_upcall(ep);
343 break;
344
345 case ABORTING:
346 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)",
347 __func__, ep);
348 disconnect = 0;
349 break;
350
351 case CLOSING:
352 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND",
353 __func__, ep);
354 __state_set(&ep->com, MORIBUND);
355 disconnect = 0;
356 break;
357
358 case MORIBUND:
359 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__,
360 ep);
361 STOP_EP_TIMER(ep);
362 if (ep->com.cm_id && ep->com.qp) {
363 attrs.next_state = C4IW_QP_STATE_IDLE;
364 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
365 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
366 }
367 close_socket(&ep->com, 0);
368 close_complete_upcall(ep, 0);
369 __state_set(&ep->com, DEAD);
370 release = 1;
371 disconnect = 0;
372 break;
373
374 case DEAD:
375 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)",
376 __func__, ep);
377 disconnect = 0;
378 break;
379
380 default:
381 panic("%s: ep %p state %d", __func__, ep,
382 ep->com.state);
383 break;
384 }
385
386 mutex_unlock(&ep->com.mutex);
387
388 if (disconnect) {
389
390 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep);
391 c4iw_ep_disconnect(ep, 0, M_NOWAIT);
392 }
393 if (release) {
394
395 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep);
396 c4iw_put_ep(&ep->com);
397 }
398 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep);
399 return;
400 }
401
402 static void
process_conn_error(struct c4iw_ep * ep)403 process_conn_error(struct c4iw_ep *ep)
404 {
405 struct c4iw_qp_attributes attrs;
406 int ret;
407 int state;
408
409 state = state_read(&ep->com);
410 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s",
411 __func__, ep, ep->com.so, ep->com.so->so_error,
412 states[ep->com.state]);
413
414 switch (state) {
415
416 case MPA_REQ_WAIT:
417 STOP_EP_TIMER(ep);
418 break;
419
420 case MPA_REQ_SENT:
421 STOP_EP_TIMER(ep);
422 connect_reply_upcall(ep, -ECONNRESET);
423 break;
424
425 case MPA_REP_SENT:
426 ep->com.rpl_err = ECONNRESET;
427 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep);
428 break;
429
430 case MPA_REQ_RCVD:
431
432 /*
433 * We're gonna mark this puppy DEAD, but keep
434 * the reference on it until the ULP accepts or
435 * rejects the CR.
436 */
437 c4iw_get_ep(&ep->com);
438 break;
439
440 case MORIBUND:
441 case CLOSING:
442 STOP_EP_TIMER(ep);
443 /*FALLTHROUGH*/
444 case FPDU_MODE:
445
446 if (ep->com.cm_id && ep->com.qp) {
447
448 attrs.next_state = C4IW_QP_STATE_ERROR;
449 ret = c4iw_modify_qp(ep->com.qp->rhp,
450 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
451 &attrs, 1);
452 if (ret)
453 log(LOG_ERR,
454 "%s - qp <- error failed!\n",
455 __func__);
456 }
457 peer_abort_upcall(ep);
458 break;
459
460 case ABORTING:
461 break;
462
463 case DEAD:
464 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!",
465 __func__, ep->com.so->so_error);
466 return;
467
468 default:
469 panic("%s: ep %p state %d", __func__, ep, state);
470 break;
471 }
472
473 if (state != ABORTING) {
474
475 CTR2(KTR_IW_CXGBE, "%s:pce1 %p", __func__, ep);
476 close_socket(&ep->com, 0);
477 state_set(&ep->com, DEAD);
478 c4iw_put_ep(&ep->com);
479 }
480 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep);
481 return;
482 }
483
484 static void
process_close_complete(struct c4iw_ep * ep)485 process_close_complete(struct c4iw_ep *ep)
486 {
487 struct c4iw_qp_attributes attrs;
488 int release = 0;
489
490 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep,
491 ep->com.so, states[ep->com.state]);
492
493 /* The cm_id may be null if we failed to connect */
494 mutex_lock(&ep->com.mutex);
495
496 switch (ep->com.state) {
497
498 case CLOSING:
499 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND",
500 __func__, ep);
501 __state_set(&ep->com, MORIBUND);
502 break;
503
504 case MORIBUND:
505 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__,
506 ep);
507 STOP_EP_TIMER(ep);
508
509 if ((ep->com.cm_id) && (ep->com.qp)) {
510
511 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE",
512 __func__, ep);
513 attrs.next_state = C4IW_QP_STATE_IDLE;
514 c4iw_modify_qp(ep->com.dev,
515 ep->com.qp,
516 C4IW_QP_ATTR_NEXT_STATE,
517 &attrs, 1);
518 }
519
520 if (ep->parent_ep) {
521
522 CTR2(KTR_IW_CXGBE, "%s:pcc3 %p", __func__, ep);
523 close_socket(&ep->com, 1);
524 }
525 else {
526
527 CTR2(KTR_IW_CXGBE, "%s:pcc4 %p", __func__, ep);
528 close_socket(&ep->com, 0);
529 }
530 close_complete_upcall(ep, 0);
531 __state_set(&ep->com, DEAD);
532 release = 1;
533 break;
534
535 case ABORTING:
536 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep);
537 break;
538
539 case DEAD:
540 default:
541 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep);
542 panic("%s:pcc6 %p DEAD", __func__, ep);
543 break;
544 }
545 mutex_unlock(&ep->com.mutex);
546
547 if (release) {
548
549 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p", __func__, ep);
550 c4iw_put_ep(&ep->com);
551 }
552 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep);
553 return;
554 }
555
556 static void
init_sock(struct c4iw_ep_common * epc)557 init_sock(struct c4iw_ep_common *epc)
558 {
559 int rc;
560 struct sockopt sopt;
561 struct socket *so = epc->so;
562 int on = 1;
563
564 SOCK_LOCK(so);
565 soupcall_set(so, SO_RCV, c4iw_so_upcall, epc);
566 so->so_state |= SS_NBIO;
567 SOCK_UNLOCK(so);
568 sopt.sopt_dir = SOPT_SET;
569 sopt.sopt_level = IPPROTO_TCP;
570 sopt.sopt_name = TCP_NODELAY;
571 sopt.sopt_val = (caddr_t)&on;
572 sopt.sopt_valsize = sizeof on;
573 sopt.sopt_td = NULL;
574 rc = sosetopt(so, &sopt);
575 if (rc) {
576 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n",
577 __func__, so, rc);
578 }
579 }
580
581 static void
process_data(struct c4iw_ep * ep)582 process_data(struct c4iw_ep *ep)
583 {
584 struct sockaddr_in *local, *remote;
585
586 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__,
587 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv));
588
589 switch (state_read(&ep->com)) {
590 case MPA_REQ_SENT:
591 process_mpa_reply(ep);
592 break;
593 case MPA_REQ_WAIT:
594 in_getsockaddr(ep->com.so, (struct sockaddr **)&local);
595 in_getpeeraddr(ep->com.so, (struct sockaddr **)&remote);
596 ep->com.local_addr = *local;
597 ep->com.remote_addr = *remote;
598 free(local, M_SONAME);
599 free(remote, M_SONAME);
600 process_mpa_request(ep);
601 break;
602 default:
603 if (sbused(&ep->com.so->so_rcv))
604 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, "
605 "state %d, so %p, so_state 0x%x, sbused %u\n",
606 __func__, ep, state_read(&ep->com), ep->com.so,
607 ep->com.so->so_state, sbused(&ep->com.so->so_rcv));
608 break;
609 }
610 }
611
612 static void
process_connected(struct c4iw_ep * ep)613 process_connected(struct c4iw_ep *ep)
614 {
615
616 if ((ep->com.so->so_state & SS_ISCONNECTED) && !ep->com.so->so_error)
617 send_mpa_req(ep);
618 else {
619 connect_reply_upcall(ep, -ep->com.so->so_error);
620 close_socket(&ep->com, 0);
621 state_set(&ep->com, DEAD);
622 c4iw_put_ep(&ep->com);
623 }
624 }
625
626 static struct socket *
dequeue_socket(struct socket * head,struct sockaddr_in ** remote,struct c4iw_ep * child_ep)627 dequeue_socket(struct socket *head, struct sockaddr_in **remote,
628 struct c4iw_ep *child_ep)
629 {
630 struct socket *so;
631
632 ACCEPT_LOCK();
633 so = TAILQ_FIRST(&head->so_comp);
634 if (!so) {
635 ACCEPT_UNLOCK();
636 return (NULL);
637 }
638 TAILQ_REMOVE(&head->so_comp, so, so_list);
639 head->so_qlen--;
640 SOCK_LOCK(so);
641 so->so_qstate &= ~SQ_COMP;
642 so->so_head = NULL;
643 soref(so);
644 soupcall_set(so, SO_RCV, c4iw_so_upcall, child_ep);
645 so->so_state |= SS_NBIO;
646 SOCK_UNLOCK(so);
647 ACCEPT_UNLOCK();
648 soaccept(so, (struct sockaddr **)remote);
649
650 return (so);
651 }
652
653 static void
process_newconn(struct c4iw_ep * parent_ep)654 process_newconn(struct c4iw_ep *parent_ep)
655 {
656 struct socket *child_so;
657 struct c4iw_ep *child_ep;
658 struct sockaddr_in *remote;
659
660 child_ep = alloc_ep(sizeof(*child_ep), M_NOWAIT);
661 if (!child_ep) {
662 CTR3(KTR_IW_CXGBE, "%s: parent so %p, parent ep %p, ENOMEM",
663 __func__, parent_ep->com.so, parent_ep);
664 log(LOG_ERR, "%s: failed to allocate ep entry\n", __func__);
665 return;
666 }
667
668 child_so = dequeue_socket(parent_ep->com.so, &remote, child_ep);
669 if (!child_so) {
670 CTR4(KTR_IW_CXGBE,
671 "%s: parent so %p, parent ep %p, child ep %p, dequeue err",
672 __func__, parent_ep->com.so, parent_ep, child_ep);
673 log(LOG_ERR, "%s: failed to dequeue child socket\n", __func__);
674 __free_ep(&child_ep->com);
675 return;
676
677 }
678
679 CTR5(KTR_IW_CXGBE,
680 "%s: parent so %p, parent ep %p, child so %p, child ep %p",
681 __func__, parent_ep->com.so, parent_ep, child_so, child_ep);
682
683 child_ep->com.local_addr = parent_ep->com.local_addr;
684 child_ep->com.remote_addr = *remote;
685 child_ep->com.dev = parent_ep->com.dev;
686 child_ep->com.so = child_so;
687 child_ep->com.cm_id = NULL;
688 child_ep->com.thread = parent_ep->com.thread;
689 child_ep->parent_ep = parent_ep;
690
691 free(remote, M_SONAME);
692 c4iw_get_ep(&parent_ep->com);
693 child_ep->parent_ep = parent_ep;
694 init_timer(&child_ep->timer);
695 state_set(&child_ep->com, MPA_REQ_WAIT);
696 START_EP_TIMER(child_ep);
697
698 /* maybe the request has already been queued up on the socket... */
699 process_mpa_request(child_ep);
700 }
701
702 static int
c4iw_so_upcall(struct socket * so,void * arg,int waitflag)703 c4iw_so_upcall(struct socket *so, void *arg, int waitflag)
704 {
705 struct c4iw_ep *ep = arg;
706
707 spin_lock(&req_lock);
708
709 CTR6(KTR_IW_CXGBE,
710 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p",
711 __func__, so, so->so_state, ep, states[ep->com.state],
712 ep->com.entry.tqe_prev);
713
714 if (ep && ep->com.so && !ep->com.entry.tqe_prev) {
715 KASSERT(ep->com.so == so, ("%s: XXX review.", __func__));
716 c4iw_get_ep(&ep->com);
717 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry);
718 queue_work(c4iw_taskq, &c4iw_task);
719 }
720
721 spin_unlock(&req_lock);
722 return (SU_OK);
723 }
724
725 static void
process_socket_event(struct c4iw_ep * ep)726 process_socket_event(struct c4iw_ep *ep)
727 {
728 int state = state_read(&ep->com);
729 struct socket *so = ep->com.so;
730
731 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, "
732 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state,
733 so->so_error, so->so_rcv.sb_state, ep, states[state]);
734
735 if (state == CONNECTING) {
736 process_connected(ep);
737 return;
738 }
739
740 if (state == LISTEN) {
741 process_newconn(ep);
742 return;
743 }
744
745 /* connection error */
746 if (so->so_error) {
747 process_conn_error(ep);
748 return;
749 }
750
751 /* peer close */
752 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state < CLOSING) {
753 process_peer_close(ep);
754 return;
755 }
756
757 /* close complete */
758 if (so->so_state & SS_ISDISCONNECTED) {
759 process_close_complete(ep);
760 return;
761 }
762
763 /* rx data */
764 process_data(ep);
765 }
766
767 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD, 0, "iw_cxgbe driver parameters");
768
769 int db_delay_usecs = 1;
770 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_delay_usecs, CTLFLAG_RWTUN, &db_delay_usecs, 0,
771 "Usecs to delay awaiting db fifo to drain");
772
773 static int dack_mode = 1;
774 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0,
775 "Delayed ack mode (default = 1)");
776
777 int c4iw_max_read_depth = 8;
778 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0,
779 "Per-connection max ORD/IRD (default = 8)");
780
781 static int enable_tcp_timestamps;
782 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0,
783 "Enable tcp timestamps (default = 0)");
784
785 static int enable_tcp_sack;
786 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0,
787 "Enable tcp SACK (default = 0)");
788
789 static int enable_tcp_window_scaling = 1;
790 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0,
791 "Enable tcp window scaling (default = 1)");
792
793 int c4iw_debug = 1;
794 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0,
795 "Enable debug logging (default = 0)");
796
797 static int peer2peer;
798 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0,
799 "Support peer2peer ULPs (default = 0)");
800
801 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
802 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0,
803 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)");
804
805 static int ep_timeout_secs = 60;
806 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0,
807 "CM Endpoint operation timeout in seconds (default = 60)");
808
809 static int mpa_rev = 1;
810 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0,
811 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)");
812
813 static int markers_enabled;
814 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0,
815 "Enable MPA MARKERS (default(0) = disabled)");
816
817 static int crc_enabled = 1;
818 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0,
819 "Enable MPA CRC (default(1) = enabled)");
820
821 static int rcv_win = 256 * 1024;
822 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0,
823 "TCP receive window in bytes (default = 256KB)");
824
825 static int snd_win = 128 * 1024;
826 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0,
827 "TCP send window in bytes (default = 128KB)");
828
829 int db_fc_threshold = 2000;
830 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_fc_threshold, CTLFLAG_RWTUN, &db_fc_threshold, 0,
831 "QP count/threshold that triggers automatic");
832
833 static void
start_ep_timer(struct c4iw_ep * ep)834 start_ep_timer(struct c4iw_ep *ep)
835 {
836
837 if (timer_pending(&ep->timer)) {
838 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep);
839 printk(KERN_ERR "%s timer already started! ep %p\n", __func__,
840 ep);
841 return;
842 }
843 clear_bit(TIMEOUT, &ep->com.flags);
844 c4iw_get_ep(&ep->com);
845 ep->timer.expires = jiffies + ep_timeout_secs * HZ;
846 ep->timer.data = (unsigned long)ep;
847 ep->timer.function = ep_timeout;
848 add_timer(&ep->timer);
849 }
850
851 static void
stop_ep_timer(struct c4iw_ep * ep)852 stop_ep_timer(struct c4iw_ep *ep)
853 {
854
855 del_timer_sync(&ep->timer);
856 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
857 c4iw_put_ep(&ep->com);
858 }
859 }
860
861 static enum
state_read(struct c4iw_ep_common * epc)862 c4iw_ep_state state_read(struct c4iw_ep_common *epc)
863 {
864 enum c4iw_ep_state state;
865
866 mutex_lock(&epc->mutex);
867 state = epc->state;
868 mutex_unlock(&epc->mutex);
869
870 return (state);
871 }
872
873 static void
__state_set(struct c4iw_ep_common * epc,enum c4iw_ep_state new)874 __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
875 {
876
877 epc->state = new;
878 }
879
880 static void
state_set(struct c4iw_ep_common * epc,enum c4iw_ep_state new)881 state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
882 {
883
884 mutex_lock(&epc->mutex);
885 __state_set(epc, new);
886 mutex_unlock(&epc->mutex);
887 }
888
889 static void *
alloc_ep(int size,gfp_t gfp)890 alloc_ep(int size, gfp_t gfp)
891 {
892 struct c4iw_ep_common *epc;
893
894 epc = kzalloc(size, gfp);
895 if (epc == NULL)
896 return (NULL);
897
898 kref_init(&epc->kref);
899 mutex_init(&epc->mutex);
900 c4iw_init_wr_wait(&epc->wr_wait);
901
902 return (epc);
903 }
904
905 void
__free_ep(struct c4iw_ep_common * epc)906 __free_ep(struct c4iw_ep_common *epc)
907 {
908 CTR2(KTR_IW_CXGBE, "%s:feB %p", __func__, epc);
909 KASSERT(!epc->so, ("%s warning ep->so %p \n", __func__, epc->so));
910 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list!\n", __func__, epc));
911 free(epc, M_DEVBUF);
912 CTR2(KTR_IW_CXGBE, "%s:feE %p", __func__, epc);
913 }
914
_c4iw_free_ep(struct kref * kref)915 void _c4iw_free_ep(struct kref *kref)
916 {
917 struct c4iw_ep *ep;
918 struct c4iw_ep_common *epc;
919
920 ep = container_of(kref, struct c4iw_ep, com.kref);
921 epc = &ep->com;
922 KASSERT(!epc->so, ("%s ep->so %p", __func__, epc->so));
923 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list",
924 __func__, epc));
925 kfree(ep);
926 }
927
release_ep_resources(struct c4iw_ep * ep)928 static void release_ep_resources(struct c4iw_ep *ep)
929 {
930 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep);
931 set_bit(RELEASE_RESOURCES, &ep->com.flags);
932 c4iw_put_ep(&ep->com);
933 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep);
934 }
935
936 static void
send_mpa_req(struct c4iw_ep * ep)937 send_mpa_req(struct c4iw_ep *ep)
938 {
939 int mpalen;
940 struct mpa_message *mpa;
941 struct mpa_v2_conn_params mpa_v2_params;
942 struct mbuf *m;
943 char mpa_rev_to_use = mpa_rev;
944 int err;
945
946 if (ep->retry_with_mpa_v1)
947 mpa_rev_to_use = 1;
948 mpalen = sizeof(*mpa) + ep->plen;
949 if (mpa_rev_to_use == 2)
950 mpalen += sizeof(struct mpa_v2_conn_params);
951
952 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT);
953 if (mpa == NULL) {
954 failed:
955 connect_reply_upcall(ep, -ENOMEM);
956 return;
957 }
958
959 memset(mpa, 0, mpalen);
960 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
961 mpa->flags = (crc_enabled ? MPA_CRC : 0) |
962 (markers_enabled ? MPA_MARKERS : 0) |
963 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0);
964 mpa->private_data_size = htons(ep->plen);
965 mpa->revision = mpa_rev_to_use;
966
967 if (mpa_rev_to_use == 1) {
968 ep->tried_with_mpa_v1 = 1;
969 ep->retry_with_mpa_v1 = 0;
970 }
971
972 if (mpa_rev_to_use == 2) {
973 mpa->private_data_size +=
974 htons(sizeof(struct mpa_v2_conn_params));
975 mpa_v2_params.ird = htons((u16)ep->ird);
976 mpa_v2_params.ord = htons((u16)ep->ord);
977
978 if (peer2peer) {
979 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
980
981 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) {
982 mpa_v2_params.ord |=
983 htons(MPA_V2_RDMA_WRITE_RTR);
984 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) {
985 mpa_v2_params.ord |=
986 htons(MPA_V2_RDMA_READ_RTR);
987 }
988 }
989 memcpy(mpa->private_data, &mpa_v2_params,
990 sizeof(struct mpa_v2_conn_params));
991
992 if (ep->plen) {
993
994 memcpy(mpa->private_data +
995 sizeof(struct mpa_v2_conn_params),
996 ep->mpa_pkt + sizeof(*mpa), ep->plen);
997 }
998 } else {
999
1000 if (ep->plen)
1001 memcpy(mpa->private_data,
1002 ep->mpa_pkt + sizeof(*mpa), ep->plen);
1003 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep);
1004 }
1005
1006 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA);
1007 if (m == NULL) {
1008 free(mpa, M_CXGBE);
1009 goto failed;
1010 }
1011 m_copyback(m, 0, mpalen, (void *)mpa);
1012 free(mpa, M_CXGBE);
1013
1014 err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT,
1015 ep->com.thread);
1016 if (err)
1017 goto failed;
1018
1019 START_EP_TIMER(ep);
1020 state_set(&ep->com, MPA_REQ_SENT);
1021 ep->mpa_attr.initiator = 1;
1022 }
1023
send_mpa_reject(struct c4iw_ep * ep,const void * pdata,u8 plen)1024 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
1025 {
1026 int mpalen ;
1027 struct mpa_message *mpa;
1028 struct mpa_v2_conn_params mpa_v2_params;
1029 struct mbuf *m;
1030 int err;
1031
1032 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid,
1033 ep->plen);
1034
1035 mpalen = sizeof(*mpa) + plen;
1036
1037 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1038
1039 mpalen += sizeof(struct mpa_v2_conn_params);
1040 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep,
1041 ep->mpa_attr.version, mpalen);
1042 }
1043
1044 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT);
1045 if (mpa == NULL)
1046 return (-ENOMEM);
1047
1048 memset(mpa, 0, mpalen);
1049 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1050 mpa->flags = MPA_REJECT;
1051 mpa->revision = mpa_rev;
1052 mpa->private_data_size = htons(plen);
1053
1054 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1055
1056 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1057 mpa->private_data_size +=
1058 htons(sizeof(struct mpa_v2_conn_params));
1059 mpa_v2_params.ird = htons(((u16)ep->ird) |
1060 (peer2peer ? MPA_V2_PEER2PEER_MODEL :
1061 0));
1062 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
1063 (p2p_type ==
1064 FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
1065 MPA_V2_RDMA_WRITE_RTR : p2p_type ==
1066 FW_RI_INIT_P2PTYPE_READ_REQ ?
1067 MPA_V2_RDMA_READ_RTR : 0) : 0));
1068 memcpy(mpa->private_data, &mpa_v2_params,
1069 sizeof(struct mpa_v2_conn_params));
1070
1071 if (ep->plen)
1072 memcpy(mpa->private_data +
1073 sizeof(struct mpa_v2_conn_params), pdata, plen);
1074 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep,
1075 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen);
1076 } else
1077 if (plen)
1078 memcpy(mpa->private_data, pdata, plen);
1079
1080 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA);
1081 if (m == NULL) {
1082 free(mpa, M_CXGBE);
1083 return (-ENOMEM);
1084 }
1085 m_copyback(m, 0, mpalen, (void *)mpa);
1086 free(mpa, M_CXGBE);
1087
1088 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread);
1089 if (!err)
1090 ep->snd_seq += mpalen;
1091 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err);
1092 return err;
1093 }
1094
send_mpa_reply(struct c4iw_ep * ep,const void * pdata,u8 plen)1095 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
1096 {
1097 int mpalen;
1098 struct mpa_message *mpa;
1099 struct mbuf *m;
1100 struct mpa_v2_conn_params mpa_v2_params;
1101 int err;
1102
1103 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep);
1104
1105 mpalen = sizeof(*mpa) + plen;
1106
1107 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1108
1109 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep,
1110 ep->mpa_attr.version);
1111 mpalen += sizeof(struct mpa_v2_conn_params);
1112 }
1113
1114 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT);
1115 if (mpa == NULL)
1116 return (-ENOMEM);
1117
1118 memset(mpa, 0, sizeof(*mpa));
1119 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1120 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
1121 (markers_enabled ? MPA_MARKERS : 0);
1122 mpa->revision = ep->mpa_attr.version;
1123 mpa->private_data_size = htons(plen);
1124
1125 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1126
1127 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1128 mpa->private_data_size +=
1129 htons(sizeof(struct mpa_v2_conn_params));
1130 mpa_v2_params.ird = htons((u16)ep->ird);
1131 mpa_v2_params.ord = htons((u16)ep->ord);
1132 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep,
1133 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord);
1134
1135 if (peer2peer && (ep->mpa_attr.p2p_type !=
1136 FW_RI_INIT_P2PTYPE_DISABLED)) {
1137
1138 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
1139
1140 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) {
1141
1142 mpa_v2_params.ord |=
1143 htons(MPA_V2_RDMA_WRITE_RTR);
1144 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d",
1145 __func__, ep, p2p_type, mpa_v2_params.ird,
1146 mpa_v2_params.ord);
1147 }
1148 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) {
1149
1150 mpa_v2_params.ord |=
1151 htons(MPA_V2_RDMA_READ_RTR);
1152 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d",
1153 __func__, ep, p2p_type, mpa_v2_params.ird,
1154 mpa_v2_params.ord);
1155 }
1156 }
1157
1158 memcpy(mpa->private_data, &mpa_v2_params,
1159 sizeof(struct mpa_v2_conn_params));
1160
1161 if (ep->plen)
1162 memcpy(mpa->private_data +
1163 sizeof(struct mpa_v2_conn_params), pdata, plen);
1164 } else
1165 if (plen)
1166 memcpy(mpa->private_data, pdata, plen);
1167
1168 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA);
1169 if (m == NULL) {
1170 free(mpa, M_CXGBE);
1171 return (-ENOMEM);
1172 }
1173 m_copyback(m, 0, mpalen, (void *)mpa);
1174 free(mpa, M_CXGBE);
1175
1176
1177 state_set(&ep->com, MPA_REP_SENT);
1178 ep->snd_seq += mpalen;
1179 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT,
1180 ep->com.thread);
1181 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err);
1182 return err;
1183 }
1184
1185
1186
close_complete_upcall(struct c4iw_ep * ep,int status)1187 static void close_complete_upcall(struct c4iw_ep *ep, int status)
1188 {
1189 struct iw_cm_event event;
1190
1191 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep);
1192 memset(&event, 0, sizeof(event));
1193 event.event = IW_CM_EVENT_CLOSE;
1194 event.status = status;
1195
1196 if (ep->com.cm_id) {
1197
1198 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep);
1199 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1200 ep->com.cm_id->rem_ref(ep->com.cm_id);
1201 ep->com.cm_id = NULL;
1202 ep->com.qp = NULL;
1203 set_bit(CLOSE_UPCALL, &ep->com.history);
1204 }
1205 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep);
1206 }
1207
abort_connection(struct c4iw_ep * ep)1208 static int abort_connection(struct c4iw_ep *ep)
1209 {
1210 int err;
1211
1212 CTR2(KTR_IW_CXGBE, "%s:abB %p", __func__, ep);
1213 state_set(&ep->com, ABORTING);
1214 abort_socket(ep);
1215 err = close_socket(&ep->com, 0);
1216 set_bit(ABORT_CONN, &ep->com.history);
1217 CTR2(KTR_IW_CXGBE, "%s:abE %p", __func__, ep);
1218 return err;
1219 }
1220
peer_close_upcall(struct c4iw_ep * ep)1221 static void peer_close_upcall(struct c4iw_ep *ep)
1222 {
1223 struct iw_cm_event event;
1224
1225 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep);
1226 memset(&event, 0, sizeof(event));
1227 event.event = IW_CM_EVENT_DISCONNECT;
1228
1229 if (ep->com.cm_id) {
1230
1231 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep);
1232 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1233 set_bit(DISCONN_UPCALL, &ep->com.history);
1234 }
1235 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep);
1236 }
1237
peer_abort_upcall(struct c4iw_ep * ep)1238 static void peer_abort_upcall(struct c4iw_ep *ep)
1239 {
1240 struct iw_cm_event event;
1241
1242 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep);
1243 memset(&event, 0, sizeof(event));
1244 event.event = IW_CM_EVENT_CLOSE;
1245 event.status = -ECONNRESET;
1246
1247 if (ep->com.cm_id) {
1248
1249 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep);
1250 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1251 ep->com.cm_id->rem_ref(ep->com.cm_id);
1252 ep->com.cm_id = NULL;
1253 ep->com.qp = NULL;
1254 set_bit(ABORT_UPCALL, &ep->com.history);
1255 }
1256 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep);
1257 }
1258
connect_reply_upcall(struct c4iw_ep * ep,int status)1259 static void connect_reply_upcall(struct c4iw_ep *ep, int status)
1260 {
1261 struct iw_cm_event event;
1262
1263 CTR3(KTR_IW_CXGBE, "%s:cruB %p", __func__, ep, status);
1264 memset(&event, 0, sizeof(event));
1265 event.event = IW_CM_EVENT_CONNECT_REPLY;
1266 event.status = (status ==-ECONNABORTED)?-ECONNRESET: status;
1267 event.local_addr = ep->com.local_addr;
1268 event.remote_addr = ep->com.remote_addr;
1269
1270 if ((status == 0) || (status == -ECONNREFUSED)) {
1271
1272 if (!ep->tried_with_mpa_v1) {
1273
1274 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep);
1275 /* this means MPA_v2 is used */
1276 event.private_data_len = ep->plen -
1277 sizeof(struct mpa_v2_conn_params);
1278 event.private_data = ep->mpa_pkt +
1279 sizeof(struct mpa_message) +
1280 sizeof(struct mpa_v2_conn_params);
1281 } else {
1282
1283 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep);
1284 /* this means MPA_v1 is used */
1285 event.private_data_len = ep->plen;
1286 event.private_data = ep->mpa_pkt +
1287 sizeof(struct mpa_message);
1288 }
1289 }
1290
1291 if (ep->com.cm_id) {
1292
1293 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep);
1294 set_bit(CONN_RPL_UPCALL, &ep->com.history);
1295 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1296 }
1297
1298 if(status == -ECONNABORTED) {
1299
1300 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status);
1301 return;
1302 }
1303
1304 if (status < 0) {
1305
1306 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status);
1307 ep->com.cm_id->rem_ref(ep->com.cm_id);
1308 ep->com.cm_id = NULL;
1309 ep->com.qp = NULL;
1310 }
1311
1312 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep);
1313 }
1314
connect_request_upcall(struct c4iw_ep * ep)1315 static int connect_request_upcall(struct c4iw_ep *ep)
1316 {
1317 struct iw_cm_event event;
1318 int ret;
1319
1320 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep,
1321 ep->tried_with_mpa_v1);
1322
1323 memset(&event, 0, sizeof(event));
1324 event.event = IW_CM_EVENT_CONNECT_REQUEST;
1325 event.local_addr = ep->com.local_addr;
1326 event.remote_addr = ep->com.remote_addr;
1327 event.provider_data = ep;
1328 event.so = ep->com.so;
1329
1330 if (!ep->tried_with_mpa_v1) {
1331 /* this means MPA_v2 is used */
1332 event.ord = ep->ord;
1333 event.ird = ep->ird;
1334 event.private_data_len = ep->plen -
1335 sizeof(struct mpa_v2_conn_params);
1336 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1337 sizeof(struct mpa_v2_conn_params);
1338 } else {
1339
1340 /* this means MPA_v1 is used. Send max supported */
1341 event.ord = c4iw_max_read_depth;
1342 event.ird = c4iw_max_read_depth;
1343 event.private_data_len = ep->plen;
1344 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1345 }
1346
1347 c4iw_get_ep(&ep->com);
1348 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
1349 &event);
1350 if(ret)
1351 c4iw_put_ep(&ep->com);
1352
1353 set_bit(CONNREQ_UPCALL, &ep->com.history);
1354 c4iw_put_ep(&ep->parent_ep->com);
1355 return ret;
1356 }
1357
established_upcall(struct c4iw_ep * ep)1358 static void established_upcall(struct c4iw_ep *ep)
1359 {
1360 struct iw_cm_event event;
1361
1362 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep);
1363 memset(&event, 0, sizeof(event));
1364 event.event = IW_CM_EVENT_ESTABLISHED;
1365 event.ird = ep->ird;
1366 event.ord = ep->ord;
1367
1368 if (ep->com.cm_id) {
1369
1370 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep);
1371 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1372 set_bit(ESTAB_UPCALL, &ep->com.history);
1373 }
1374 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep);
1375 }
1376
1377
1378
process_mpa_reply(struct c4iw_ep * ep)1379 static void process_mpa_reply(struct c4iw_ep *ep)
1380 {
1381 struct mpa_message *mpa;
1382 struct mpa_v2_conn_params *mpa_v2_params;
1383 u16 plen;
1384 u16 resp_ird, resp_ord;
1385 u8 rtr_mismatch = 0, insuff_ird = 0;
1386 struct c4iw_qp_attributes attrs;
1387 enum c4iw_qp_attr_mask mask;
1388 int err;
1389 struct mbuf *top, *m;
1390 int flags = MSG_DONTWAIT;
1391 struct uio uio;
1392
1393 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep);
1394
1395 /*
1396 * Stop mpa timer. If it expired, then the state has
1397 * changed and we bail since ep_timeout already aborted
1398 * the connection.
1399 */
1400 STOP_EP_TIMER(ep);
1401 if (state_read(&ep->com) != MPA_REQ_SENT)
1402 return;
1403
1404 uio.uio_resid = 1000000;
1405 uio.uio_td = ep->com.thread;
1406 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags);
1407
1408 if (err) {
1409
1410 if (err == EWOULDBLOCK) {
1411
1412 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep);
1413 START_EP_TIMER(ep);
1414 return;
1415 }
1416 err = -err;
1417 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep);
1418 goto err;
1419 }
1420
1421 if (ep->com.so->so_rcv.sb_mb) {
1422
1423 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep);
1424 printf("%s data after soreceive called! so %p sb_mb %p top %p\n",
1425 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top);
1426 }
1427
1428 m = top;
1429
1430 do {
1431
1432 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep);
1433 /*
1434 * If we get more than the supported amount of private data
1435 * then we must fail this connection.
1436 */
1437 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) {
1438
1439 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep,
1440 ep->mpa_pkt_len + m->m_len);
1441 err = (-EINVAL);
1442 goto err;
1443 }
1444
1445 /*
1446 * copy the new data into our accumulation buffer.
1447 */
1448 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len]));
1449 ep->mpa_pkt_len += m->m_len;
1450 if (!m->m_next)
1451 m = m->m_nextpkt;
1452 else
1453 m = m->m_next;
1454 } while (m);
1455
1456 m_freem(top);
1457 /*
1458 * if we don't even have the mpa message, then bail.
1459 */
1460 if (ep->mpa_pkt_len < sizeof(*mpa))
1461 return;
1462 mpa = (struct mpa_message *) ep->mpa_pkt;
1463
1464 /* Validate MPA header. */
1465 if (mpa->revision > mpa_rev) {
1466
1467 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep,
1468 mpa->revision, mpa_rev);
1469 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, "
1470 " Received = %d\n", __func__, mpa_rev, mpa->revision);
1471 err = -EPROTO;
1472 goto err;
1473 }
1474
1475 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
1476
1477 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep);
1478 err = -EPROTO;
1479 goto err;
1480 }
1481
1482 plen = ntohs(mpa->private_data_size);
1483
1484 /*
1485 * Fail if there's too much private data.
1486 */
1487 if (plen > MPA_MAX_PRIVATE_DATA) {
1488
1489 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep);
1490 err = -EPROTO;
1491 goto err;
1492 }
1493
1494 /*
1495 * If plen does not account for pkt size
1496 */
1497 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1498
1499 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep);
1500 err = -EPROTO;
1501 goto err;
1502 }
1503
1504 ep->plen = (u8) plen;
1505
1506 /*
1507 * If we don't have all the pdata yet, then bail.
1508 * We'll continue process when more data arrives.
1509 */
1510 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) {
1511
1512 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep);
1513 return;
1514 }
1515
1516 if (mpa->flags & MPA_REJECT) {
1517
1518 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep);
1519 err = -ECONNREFUSED;
1520 goto err;
1521 }
1522
1523 /*
1524 * If we get here we have accumulated the entire mpa
1525 * start reply message including private data. And
1526 * the MPA header is valid.
1527 */
1528 state_set(&ep->com, FPDU_MODE);
1529 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1530 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1531 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1532 ep->mpa_attr.version = mpa->revision;
1533 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1534
1535 if (mpa->revision == 2) {
1536
1537 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep);
1538 ep->mpa_attr.enhanced_rdma_conn =
1539 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1540
1541 if (ep->mpa_attr.enhanced_rdma_conn) {
1542
1543 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep);
1544 mpa_v2_params = (struct mpa_v2_conn_params *)
1545 (ep->mpa_pkt + sizeof(*mpa));
1546 resp_ird = ntohs(mpa_v2_params->ird) &
1547 MPA_V2_IRD_ORD_MASK;
1548 resp_ord = ntohs(mpa_v2_params->ord) &
1549 MPA_V2_IRD_ORD_MASK;
1550
1551 /*
1552 * This is a double-check. Ideally, below checks are
1553 * not required since ird/ord stuff has been taken
1554 * care of in c4iw_accept_cr
1555 */
1556 if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) {
1557
1558 CTR2(KTR_IW_CXGBE, "%s:pmre %p", __func__, ep);
1559 err = -ENOMEM;
1560 ep->ird = resp_ord;
1561 ep->ord = resp_ird;
1562 insuff_ird = 1;
1563 }
1564
1565 if (ntohs(mpa_v2_params->ird) &
1566 MPA_V2_PEER2PEER_MODEL) {
1567
1568 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep);
1569 if (ntohs(mpa_v2_params->ord) &
1570 MPA_V2_RDMA_WRITE_RTR) {
1571
1572 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep);
1573 ep->mpa_attr.p2p_type =
1574 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1575 }
1576 else if (ntohs(mpa_v2_params->ord) &
1577 MPA_V2_RDMA_READ_RTR) {
1578
1579 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep);
1580 ep->mpa_attr.p2p_type =
1581 FW_RI_INIT_P2PTYPE_READ_REQ;
1582 }
1583 }
1584 }
1585 } else {
1586
1587 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep);
1588
1589 if (mpa->revision == 1) {
1590
1591 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep);
1592
1593 if (peer2peer) {
1594
1595 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep);
1596 ep->mpa_attr.p2p_type = p2p_type;
1597 }
1598 }
1599 }
1600
1601 if (set_tcpinfo(ep)) {
1602
1603 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep);
1604 printf("%s set_tcpinfo error\n", __func__);
1605 goto err;
1606 }
1607
1608 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, "
1609 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__,
1610 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1611 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1612 ep->mpa_attr.p2p_type);
1613
1614 /*
1615 * If responder's RTR does not match with that of initiator, assign
1616 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
1617 * generated when moving QP to RTS state.
1618 * A TERM message will be sent after QP has moved to RTS state
1619 */
1620 if ((ep->mpa_attr.version == 2) && peer2peer &&
1621 (ep->mpa_attr.p2p_type != p2p_type)) {
1622
1623 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep);
1624 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1625 rtr_mismatch = 1;
1626 }
1627
1628
1629 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq;
1630 attrs.mpa_attr = ep->mpa_attr;
1631 attrs.max_ird = ep->ird;
1632 attrs.max_ord = ep->ord;
1633 attrs.llp_stream_handle = ep;
1634 attrs.next_state = C4IW_QP_STATE_RTS;
1635
1636 mask = C4IW_QP_ATTR_NEXT_STATE |
1637 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
1638 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
1639
1640 /* bind QP and TID with INIT_WR */
1641 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1);
1642
1643 if (err) {
1644
1645 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep);
1646 goto err;
1647 }
1648
1649 /*
1650 * If responder's RTR requirement did not match with what initiator
1651 * supports, generate TERM message
1652 */
1653 if (rtr_mismatch) {
1654
1655 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep);
1656 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__);
1657 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1658 attrs.ecode = MPA_NOMATCH_RTR;
1659 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1660 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1661 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
1662 err = -ENOMEM;
1663 goto out;
1664 }
1665
1666 /*
1667 * Generate TERM if initiator IRD is not sufficient for responder
1668 * provided ORD. Currently, we do the same behaviour even when
1669 * responder provided IRD is also not sufficient as regards to
1670 * initiator ORD.
1671 */
1672 if (insuff_ird) {
1673
1674 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep);
1675 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n",
1676 __func__);
1677 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1678 attrs.ecode = MPA_INSUFF_IRD;
1679 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1680 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1681 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
1682 err = -ENOMEM;
1683 goto out;
1684 }
1685 goto out;
1686 err:
1687 state_set(&ep->com, ABORTING);
1688 abort_connection(ep);
1689 out:
1690 connect_reply_upcall(ep, err);
1691 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep);
1692 return;
1693 }
1694
1695 static void
process_mpa_request(struct c4iw_ep * ep)1696 process_mpa_request(struct c4iw_ep *ep)
1697 {
1698 struct mpa_message *mpa;
1699 u16 plen;
1700 int flags = MSG_DONTWAIT;
1701 int rc;
1702 struct iovec iov;
1703 struct uio uio;
1704 enum c4iw_ep_state state = state_read(&ep->com);
1705
1706 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]);
1707
1708 if (state != MPA_REQ_WAIT)
1709 return;
1710
1711 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len];
1712 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len;
1713 uio.uio_iov = &iov;
1714 uio.uio_iovcnt = 1;
1715 uio.uio_offset = 0;
1716 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len;
1717 uio.uio_segflg = UIO_SYSSPACE;
1718 uio.uio_rw = UIO_READ;
1719 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */
1720
1721 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags);
1722 if (rc == EAGAIN)
1723 return;
1724 else if (rc) {
1725 abort:
1726 STOP_EP_TIMER(ep);
1727 abort_connection(ep);
1728 return;
1729 }
1730 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data",
1731 __func__, ep->com.so));
1732 ep->mpa_pkt_len += uio.uio_offset;
1733
1734 /*
1735 * If we get more than the supported amount of private data then we must
1736 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another
1737 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last
1738 * byte is filled by the soreceive above.
1739 */
1740
1741 /* Don't even have the MPA message. Wait for more data to arrive. */
1742 if (ep->mpa_pkt_len < sizeof(*mpa))
1743 return;
1744 mpa = (struct mpa_message *) ep->mpa_pkt;
1745
1746 /*
1747 * Validate MPA Header.
1748 */
1749 if (mpa->revision > mpa_rev) {
1750 log(LOG_ERR, "%s: MPA version mismatch. Local = %d,"
1751 " Received = %d\n", __func__, mpa_rev, mpa->revision);
1752 goto abort;
1753 }
1754
1755 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)))
1756 goto abort;
1757
1758 /*
1759 * Fail if there's too much private data.
1760 */
1761 plen = ntohs(mpa->private_data_size);
1762 if (plen > MPA_MAX_PRIVATE_DATA)
1763 goto abort;
1764
1765 /*
1766 * If plen does not account for pkt size
1767 */
1768 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen))
1769 goto abort;
1770
1771 ep->plen = (u8) plen;
1772
1773 /*
1774 * If we don't have all the pdata yet, then bail.
1775 */
1776 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1777 return;
1778
1779 /*
1780 * If we get here we have accumulated the entire mpa
1781 * start reply message including private data.
1782 */
1783 ep->mpa_attr.initiator = 0;
1784 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1785 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1786 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1787 ep->mpa_attr.version = mpa->revision;
1788 if (mpa->revision == 1)
1789 ep->tried_with_mpa_v1 = 1;
1790 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1791
1792 if (mpa->revision == 2) {
1793 ep->mpa_attr.enhanced_rdma_conn =
1794 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1795 if (ep->mpa_attr.enhanced_rdma_conn) {
1796 struct mpa_v2_conn_params *mpa_v2_params;
1797 u16 ird, ord;
1798
1799 mpa_v2_params = (void *)&ep->mpa_pkt[sizeof(*mpa)];
1800 ird = ntohs(mpa_v2_params->ird);
1801 ord = ntohs(mpa_v2_params->ord);
1802
1803 ep->ird = ird & MPA_V2_IRD_ORD_MASK;
1804 ep->ord = ord & MPA_V2_IRD_ORD_MASK;
1805 if (ird & MPA_V2_PEER2PEER_MODEL && peer2peer) {
1806 if (ord & MPA_V2_RDMA_WRITE_RTR) {
1807 ep->mpa_attr.p2p_type =
1808 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1809 } else if (ord & MPA_V2_RDMA_READ_RTR) {
1810 ep->mpa_attr.p2p_type =
1811 FW_RI_INIT_P2PTYPE_READ_REQ;
1812 }
1813 }
1814 }
1815 } else if (mpa->revision == 1 && peer2peer)
1816 ep->mpa_attr.p2p_type = p2p_type;
1817
1818 if (set_tcpinfo(ep))
1819 goto abort;
1820
1821 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, "
1822 "xmit_marker_enabled = %d, version = %d", __func__,
1823 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1824 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version);
1825
1826 state_set(&ep->com, MPA_REQ_RCVD);
1827 STOP_EP_TIMER(ep);
1828
1829 /* drive upcall */
1830 mutex_lock(&ep->parent_ep->com.mutex);
1831 if (ep->parent_ep->com.state != DEAD) {
1832 if(connect_request_upcall(ep)) {
1833 abort_connection(ep);
1834 }
1835 }else
1836 abort_connection(ep);
1837 mutex_unlock(&ep->parent_ep->com.mutex);
1838 }
1839
1840 /*
1841 * Upcall from the adapter indicating data has been transmitted.
1842 * For us its just the single MPA request or reply. We can now free
1843 * the skb holding the mpa message.
1844 */
c4iw_reject_cr(struct iw_cm_id * cm_id,const void * pdata,u8 pdata_len)1845 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
1846 {
1847 int err;
1848 struct c4iw_ep *ep = to_ep(cm_id);
1849 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep);
1850
1851 if (state_read(&ep->com) == DEAD) {
1852
1853 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep);
1854 c4iw_put_ep(&ep->com);
1855 return -ECONNRESET;
1856 }
1857 set_bit(ULP_REJECT, &ep->com.history);
1858 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
1859
1860 if (mpa_rev == 0) {
1861
1862 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep);
1863 abort_connection(ep);
1864 }
1865 else {
1866
1867 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep);
1868 err = send_mpa_reject(ep, pdata, pdata_len);
1869 err = soshutdown(ep->com.so, 3);
1870 }
1871 c4iw_put_ep(&ep->com);
1872 CTR2(KTR_IW_CXGBE, "%s:crc4 %p", __func__, ep);
1873 return 0;
1874 }
1875
c4iw_accept_cr(struct iw_cm_id * cm_id,struct iw_cm_conn_param * conn_param)1876 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
1877 {
1878 int err;
1879 struct c4iw_qp_attributes attrs;
1880 enum c4iw_qp_attr_mask mask;
1881 struct c4iw_ep *ep = to_ep(cm_id);
1882 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
1883 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
1884
1885 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep);
1886
1887 if (state_read(&ep->com) == DEAD) {
1888
1889 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep);
1890 err = -ECONNRESET;
1891 goto err;
1892 }
1893
1894 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
1895 BUG_ON(!qp);
1896
1897 set_bit(ULP_ACCEPT, &ep->com.history);
1898
1899 if ((conn_param->ord > c4iw_max_read_depth) ||
1900 (conn_param->ird > c4iw_max_read_depth)) {
1901
1902 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep);
1903 abort_connection(ep);
1904 err = -EINVAL;
1905 goto err;
1906 }
1907
1908 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1909
1910 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep);
1911
1912 if (conn_param->ord > ep->ird) {
1913
1914 CTR2(KTR_IW_CXGBE, "%s:cac4 %p", __func__, ep);
1915 ep->ird = conn_param->ird;
1916 ep->ord = conn_param->ord;
1917 send_mpa_reject(ep, conn_param->private_data,
1918 conn_param->private_data_len);
1919 abort_connection(ep);
1920 err = -ENOMEM;
1921 goto err;
1922 }
1923
1924 if (conn_param->ird > ep->ord) {
1925
1926 CTR2(KTR_IW_CXGBE, "%s:cac5 %p", __func__, ep);
1927
1928 if (!ep->ord) {
1929
1930 CTR2(KTR_IW_CXGBE, "%s:cac6 %p", __func__, ep);
1931 conn_param->ird = 1;
1932 }
1933 else {
1934 CTR2(KTR_IW_CXGBE, "%s:cac7 %p", __func__, ep);
1935 abort_connection(ep);
1936 err = -ENOMEM;
1937 goto err;
1938 }
1939 }
1940
1941 }
1942 ep->ird = conn_param->ird;
1943 ep->ord = conn_param->ord;
1944
1945 if (ep->mpa_attr.version != 2) {
1946
1947 CTR2(KTR_IW_CXGBE, "%s:cac8 %p", __func__, ep);
1948
1949 if (peer2peer && ep->ird == 0) {
1950
1951 CTR2(KTR_IW_CXGBE, "%s:cac9 %p", __func__, ep);
1952 ep->ird = 1;
1953 }
1954 }
1955
1956
1957 cm_id->add_ref(cm_id);
1958 ep->com.cm_id = cm_id;
1959 ep->com.qp = qp;
1960 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq;
1961
1962 /* bind QP to EP and move to RTS */
1963 attrs.mpa_attr = ep->mpa_attr;
1964 attrs.max_ird = ep->ird;
1965 attrs.max_ord = ep->ord;
1966 attrs.llp_stream_handle = ep;
1967 attrs.next_state = C4IW_QP_STATE_RTS;
1968
1969 /* bind QP and TID with INIT_WR */
1970 mask = C4IW_QP_ATTR_NEXT_STATE |
1971 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
1972 C4IW_QP_ATTR_MPA_ATTR |
1973 C4IW_QP_ATTR_MAX_IRD |
1974 C4IW_QP_ATTR_MAX_ORD;
1975
1976 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1);
1977
1978 if (err) {
1979
1980 CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep);
1981 goto err1;
1982 }
1983 err = send_mpa_reply(ep, conn_param->private_data,
1984 conn_param->private_data_len);
1985
1986 if (err) {
1987
1988 CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep);
1989 goto err1;
1990 }
1991
1992 state_set(&ep->com, FPDU_MODE);
1993 established_upcall(ep);
1994 c4iw_put_ep(&ep->com);
1995 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep);
1996 return 0;
1997 err1:
1998 ep->com.cm_id = NULL;
1999 ep->com.qp = NULL;
2000 cm_id->rem_ref(cm_id);
2001 err:
2002 c4iw_put_ep(&ep->com);
2003 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep);
2004 return err;
2005 }
2006
2007
2008
c4iw_connect(struct iw_cm_id * cm_id,struct iw_cm_conn_param * conn_param)2009 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2010 {
2011 int err = 0;
2012 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2013 struct c4iw_ep *ep = NULL;
2014 struct nhop4_extended nh4;
2015 struct toedev *tdev;
2016
2017 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id);
2018
2019 if ((conn_param->ord > c4iw_max_read_depth) ||
2020 (conn_param->ird > c4iw_max_read_depth)) {
2021
2022 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id);
2023 err = -EINVAL;
2024 goto out;
2025 }
2026 ep = alloc_ep(sizeof(*ep), M_NOWAIT);
2027
2028 if (!ep) {
2029
2030 CTR2(KTR_IW_CXGBE, "%s:cc2 %p", __func__, cm_id);
2031 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
2032 err = -ENOMEM;
2033 goto out;
2034 }
2035 init_timer(&ep->timer);
2036 ep->plen = conn_param->private_data_len;
2037
2038 if (ep->plen) {
2039
2040 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep);
2041 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
2042 conn_param->private_data, ep->plen);
2043 }
2044 ep->ird = conn_param->ird;
2045 ep->ord = conn_param->ord;
2046
2047 if (peer2peer && ep->ord == 0) {
2048
2049 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep);
2050 ep->ord = 1;
2051 }
2052
2053 cm_id->add_ref(cm_id);
2054 ep->com.dev = dev;
2055 ep->com.cm_id = cm_id;
2056 ep->com.qp = get_qhp(dev, conn_param->qpn);
2057
2058 if (!ep->com.qp) {
2059
2060 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep);
2061 err = -EINVAL;
2062 goto fail2;
2063 }
2064 ep->com.thread = curthread;
2065 ep->com.so = cm_id->so;
2066
2067 init_sock(&ep->com);
2068
2069 /* find a route */
2070 err = find_route(
2071 cm_id->local_addr.sin_addr.s_addr,
2072 cm_id->remote_addr.sin_addr.s_addr,
2073 cm_id->local_addr.sin_port,
2074 cm_id->remote_addr.sin_port, 0, &nh4);
2075
2076 if (err) {
2077
2078 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep);
2079 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
2080 err = -EHOSTUNREACH;
2081 goto fail2;
2082 }
2083
2084 if (!(nh4.nh_ifp->if_capenable & IFCAP_TOE)) {
2085
2086 CTR2(KTR_IW_CXGBE, "%s:cc8 %p", __func__, ep);
2087 printf("%s - interface not TOE capable.\n", __func__);
2088 close_socket(&ep->com, 0);
2089 err = -ENOPROTOOPT;
2090 goto fail3;
2091 }
2092 tdev = TOEDEV(nh4.nh_ifp);
2093
2094 if (tdev == NULL) {
2095
2096 CTR2(KTR_IW_CXGBE, "%s:cc9 %p", __func__, ep);
2097 printf("%s - No toedev for interface.\n", __func__);
2098 goto fail3;
2099 }
2100 fib4_free_nh_ext(RT_DEFAULT_FIB, &nh4);
2101
2102 state_set(&ep->com, CONNECTING);
2103 ep->tos = 0;
2104 ep->com.local_addr = cm_id->local_addr;
2105 ep->com.remote_addr = cm_id->remote_addr;
2106 err = soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr,
2107 ep->com.thread);
2108
2109 if (!err) {
2110 CTR2(KTR_IW_CXGBE, "%s:cca %p", __func__, ep);
2111 goto out;
2112 } else {
2113 close_socket(&ep->com, 0);
2114 goto fail2;
2115 }
2116
2117 fail3:
2118 CTR2(KTR_IW_CXGBE, "%s:ccb %p", __func__, ep);
2119 fib4_free_nh_ext(RT_DEFAULT_FIB, &nh4);
2120 fail2:
2121 cm_id->rem_ref(cm_id);
2122 c4iw_put_ep(&ep->com);
2123 out:
2124 CTR2(KTR_IW_CXGBE, "%s:ccE %p", __func__, ep);
2125 return err;
2126 }
2127
2128 /*
2129 * iwcm->create_listen. Returns -errno on failure.
2130 */
2131 int
c4iw_create_listen(struct iw_cm_id * cm_id,int backlog)2132 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
2133 {
2134 int rc;
2135 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2136 struct c4iw_listen_ep *ep;
2137 struct socket *so = cm_id->so;
2138
2139 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2140 CTR5(KTR_IW_CXGBE, "%s: cm_id %p, lso %p, ep %p, inp %p", __func__,
2141 cm_id, so, ep, so->so_pcb);
2142 if (ep == NULL) {
2143 log(LOG_ERR, "%s: failed to alloc memory for endpoint\n",
2144 __func__);
2145 rc = ENOMEM;
2146 goto failed;
2147 }
2148
2149 cm_id->add_ref(cm_id);
2150 ep->com.cm_id = cm_id;
2151 ep->com.dev = dev;
2152 ep->backlog = backlog;
2153 ep->com.local_addr = cm_id->local_addr;
2154 ep->com.thread = curthread;
2155 state_set(&ep->com, LISTEN);
2156 ep->com.so = so;
2157 init_sock(&ep->com);
2158
2159 rc = solisten(so, ep->backlog, ep->com.thread);
2160 if (rc != 0) {
2161 log(LOG_ERR, "%s: failed to start listener: %d\n", __func__,
2162 rc);
2163 close_socket(&ep->com, 0);
2164 cm_id->rem_ref(cm_id);
2165 c4iw_put_ep(&ep->com);
2166 goto failed;
2167 }
2168
2169 cm_id->provider_data = ep;
2170 return (0);
2171
2172 failed:
2173 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, FAILED (%d)", __func__, cm_id, rc);
2174 return (-rc);
2175 }
2176
2177 int
c4iw_destroy_listen(struct iw_cm_id * cm_id)2178 c4iw_destroy_listen(struct iw_cm_id *cm_id)
2179 {
2180 int rc;
2181 struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
2182
2183 CTR4(KTR_IW_CXGBE, "%s: cm_id %p, so %p, inp %p", __func__, cm_id,
2184 cm_id->so, cm_id->so->so_pcb);
2185
2186 state_set(&ep->com, DEAD);
2187 rc = close_socket(&ep->com, 0);
2188 cm_id->rem_ref(cm_id);
2189 c4iw_put_ep(&ep->com);
2190
2191 return (rc);
2192 }
2193
c4iw_ep_disconnect(struct c4iw_ep * ep,int abrupt,gfp_t gfp)2194 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
2195 {
2196 int ret = 0;
2197 int close = 0;
2198 int fatal = 0;
2199 struct c4iw_rdev *rdev;
2200
2201 mutex_lock(&ep->com.mutex);
2202
2203 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep);
2204
2205 rdev = &ep->com.dev->rdev;
2206
2207 if (c4iw_fatal_error(rdev)) {
2208
2209 CTR2(KTR_IW_CXGBE, "%s:ced1 %p", __func__, ep);
2210 fatal = 1;
2211 close_complete_upcall(ep, -ECONNRESET);
2212 ep->com.state = DEAD;
2213 }
2214 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep,
2215 states[ep->com.state]);
2216
2217 switch (ep->com.state) {
2218
2219 case MPA_REQ_WAIT:
2220 case MPA_REQ_SENT:
2221 case MPA_REQ_RCVD:
2222 case MPA_REP_SENT:
2223 case FPDU_MODE:
2224 close = 1;
2225 if (abrupt)
2226 ep->com.state = ABORTING;
2227 else {
2228 ep->com.state = CLOSING;
2229 START_EP_TIMER(ep);
2230 }
2231 set_bit(CLOSE_SENT, &ep->com.flags);
2232 break;
2233
2234 case CLOSING:
2235
2236 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
2237
2238 close = 1;
2239 if (abrupt) {
2240 STOP_EP_TIMER(ep);
2241 ep->com.state = ABORTING;
2242 } else
2243 ep->com.state = MORIBUND;
2244 }
2245 break;
2246
2247 case MORIBUND:
2248 case ABORTING:
2249 case DEAD:
2250 CTR3(KTR_IW_CXGBE,
2251 "%s ignoring disconnect ep %p state %u", __func__,
2252 ep, ep->com.state);
2253 break;
2254
2255 default:
2256 BUG();
2257 break;
2258 }
2259
2260 mutex_unlock(&ep->com.mutex);
2261
2262 if (close) {
2263
2264 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep);
2265
2266 if (abrupt) {
2267
2268 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep);
2269 set_bit(EP_DISC_ABORT, &ep->com.history);
2270 ret = abort_connection(ep);
2271 } else {
2272
2273 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep);
2274 set_bit(EP_DISC_CLOSE, &ep->com.history);
2275
2276 if (!ep->parent_ep)
2277 __state_set(&ep->com, MORIBUND);
2278 ret = shutdown_socket(&ep->com);
2279 }
2280
2281 if (ret) {
2282
2283 fatal = 1;
2284 }
2285 }
2286
2287 if (fatal) {
2288
2289 release_ep_resources(ep);
2290 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep);
2291 }
2292 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep);
2293 return ret;
2294 }
2295
2296 #ifdef C4IW_EP_REDIRECT
c4iw_ep_redirect(void * ctx,struct dst_entry * old,struct dst_entry * new,struct l2t_entry * l2t)2297 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
2298 struct l2t_entry *l2t)
2299 {
2300 struct c4iw_ep *ep = ctx;
2301
2302 if (ep->dst != old)
2303 return 0;
2304
2305 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new,
2306 l2t);
2307 dst_hold(new);
2308 cxgb4_l2t_release(ep->l2t);
2309 ep->l2t = l2t;
2310 dst_release(old);
2311 ep->dst = new;
2312 return 1;
2313 }
2314 #endif
2315
2316
2317
ep_timeout(unsigned long arg)2318 static void ep_timeout(unsigned long arg)
2319 {
2320 struct c4iw_ep *ep = (struct c4iw_ep *)arg;
2321 int kickit = 0;
2322
2323 CTR2(KTR_IW_CXGBE, "%s:etB %p", __func__, ep);
2324 spin_lock(&timeout_lock);
2325
2326 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
2327
2328 list_add_tail(&ep->entry, &timeout_list);
2329 kickit = 1;
2330 }
2331 spin_unlock(&timeout_lock);
2332
2333 if (kickit) {
2334
2335 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep);
2336 queue_work(c4iw_taskq, &c4iw_task);
2337 }
2338 CTR2(KTR_IW_CXGBE, "%s:etE %p", __func__, ep);
2339 }
2340
fw6_wr_rpl(struct adapter * sc,const __be64 * rpl)2341 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl)
2342 {
2343 uint64_t val = be64toh(*rpl);
2344 int ret;
2345 struct c4iw_wr_wait *wr_waitp;
2346
2347 ret = (int)((val >> 8) & 0xff);
2348 wr_waitp = (struct c4iw_wr_wait *)rpl[1];
2349 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret);
2350 if (wr_waitp)
2351 c4iw_wake_up(wr_waitp, ret ? -ret : 0);
2352
2353 return (0);
2354 }
2355
fw6_cqe_handler(struct adapter * sc,const __be64 * rpl)2356 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl)
2357 {
2358 struct t4_cqe cqe =*(const struct t4_cqe *)(&rpl[0]);
2359
2360 CTR2(KTR_IW_CXGBE, "%s rpl %p", __func__, rpl);
2361 c4iw_ev_dispatch(sc->iwarp_softc, &cqe);
2362
2363 return (0);
2364 }
2365
terminate(struct sge_iq * iq,const struct rss_header * rss,struct mbuf * m)2366 static int terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
2367 {
2368
2369 struct adapter *sc = iq->adapter;
2370
2371 const struct cpl_rdma_terminate *rpl = (const void *)(rss + 1);
2372 unsigned int tid = GET_TID(rpl);
2373 struct c4iw_qp_attributes attrs;
2374 struct toepcb *toep = lookup_tid(sc, tid);
2375 struct socket *so = inp_inpcbtosocket(toep->inp);
2376 struct c4iw_ep *ep = so->so_rcv.sb_upcallarg;
2377
2378 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep);
2379
2380 if (ep && ep->com.qp) {
2381
2382 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
2383 ep->com.qp->wq.sq.qid);
2384 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2385 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs,
2386 1);
2387 } else
2388 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
2389 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep);
2390
2391 return 0;
2392 }
2393
2394 void
c4iw_cm_init_cpl(struct adapter * sc)2395 c4iw_cm_init_cpl(struct adapter *sc)
2396 {
2397
2398 t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, terminate);
2399 t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, fw6_wr_rpl);
2400 t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, fw6_cqe_handler);
2401 t4_register_an_handler(sc, c4iw_ev_handler);
2402 }
2403
2404 void
c4iw_cm_term_cpl(struct adapter * sc)2405 c4iw_cm_term_cpl(struct adapter *sc)
2406 {
2407
2408 t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, NULL);
2409 t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, NULL);
2410 t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, NULL);
2411 }
2412
c4iw_cm_init(void)2413 int __init c4iw_cm_init(void)
2414 {
2415
2416 TAILQ_INIT(&req_list);
2417 spin_lock_init(&req_lock);
2418 INIT_LIST_HEAD(&timeout_list);
2419 spin_lock_init(&timeout_lock);
2420
2421 INIT_WORK(&c4iw_task, process_req);
2422
2423 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe");
2424 if (!c4iw_taskq)
2425 return -ENOMEM;
2426
2427
2428 return 0;
2429 }
2430
c4iw_cm_term(void)2431 void __exit c4iw_cm_term(void)
2432 {
2433 WARN_ON(!TAILQ_EMPTY(&req_list));
2434 WARN_ON(!list_empty(&timeout_list));
2435 flush_workqueue(c4iw_taskq);
2436 destroy_workqueue(c4iw_taskq);
2437 }
2438 #endif
2439