1 /*-
2 * Copyright (c) 2009 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27 #ifndef _NET80211_IEEE80211_SUPERG_H_
28 #define _NET80211_IEEE80211_SUPERG_H_
29
30 /*
31 * Atheros' 802.11 SuperG protocol support.
32 */
33
34 /*
35 * Atheros advanced capability information element.
36 */
37 struct ieee80211_ath_ie {
38 uint8_t ath_id; /* IEEE80211_ELEMID_VENDOR */
39 uint8_t ath_len; /* length in bytes */
40 uint8_t ath_oui[3]; /* ATH_OUI */
41 uint8_t ath_oui_type; /* ATH_OUI_TYPE */
42 uint8_t ath_oui_subtype; /* ATH_OUI_SUBTYPE */
43 uint8_t ath_version; /* spec revision */
44 uint8_t ath_capability; /* capability info */
45 #define ATHEROS_CAP_TURBO_PRIME 0x01 /* dynamic turbo--aka Turbo' */
46 #define ATHEROS_CAP_COMPRESSION 0x02 /* data compression */
47 #define ATHEROS_CAP_FAST_FRAME 0x04 /* fast (jumbo) frames */
48 #define ATHEROS_CAP_XR 0x08 /* Xtended Range support */
49 #define ATHEROS_CAP_AR 0x10 /* Advanded Radar support */
50 #define ATHEROS_CAP_BURST 0x20 /* Bursting - not negotiated */
51 #define ATHEROS_CAP_WME 0x40 /* CWMin tuning */
52 #define ATHEROS_CAP_BOOST 0x80 /* use turbo/!turbo mode */
53 uint8_t ath_defkeyix[2];
54 } __packed;
55
56 #define ATH_OUI_VERSION 0x00
57 #define ATH_OUI_SUBTYPE 0x01
58
59 #ifdef _KERNEL
60 struct ieee80211_stageq {
61 struct mbuf *head; /* frames linked w/ m_nextpkt */
62 struct mbuf *tail; /* last frame in queue */
63 int depth; /* # items on head */
64 };
65
66 struct ieee80211_superg {
67 /* fast-frames staging q */
68 struct ieee80211_stageq ff_stageq[WME_NUM_AC];
69 };
70
71 void ieee80211_superg_attach(struct ieee80211com *);
72 void ieee80211_superg_detach(struct ieee80211com *);
73 void ieee80211_superg_vattach(struct ieee80211vap *);
74 void ieee80211_superg_vdetach(struct ieee80211vap *);
75
76 uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
77 uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
78 void ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
79 int ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
80 const struct ieee80211_frame *);
81
82 void ieee80211_ff_node_init(struct ieee80211_node *);
83 void ieee80211_ff_node_cleanup(struct ieee80211_node *);
84
85 static inline int
ieee80211_amsdu_tx_ok(struct ieee80211_node * ni)86 ieee80211_amsdu_tx_ok(struct ieee80211_node *ni)
87 {
88
89 /* First: software A-MSDU transmit? */
90 if ((ni->ni_ic->ic_caps & IEEE80211_C_SWAMSDUTX) == 0)
91 return (0);
92
93 /* Next: does the VAP have AMSDU TX enabled? */
94 if ((ni->ni_vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX) == 0)
95 return (0);
96
97 /* Next: 11n node? (assumed that A-MSDU TX to HT nodes is ok */
98 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0)
99 return (0);
100
101 /* ok, we can at least /do/ AMSDU to this node */
102 return (1);
103 }
104
105 struct mbuf * ieee80211_amsdu_check(struct ieee80211_node *ni, struct mbuf *m);
106 struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
107 void ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *,
108 int quanta);
109
110 /*
111 * See ieee80211_ff_age() for a description of the locking
112 * expectation here.
113 */
114 static __inline void
ieee80211_ff_flush(struct ieee80211com * ic,int ac)115 ieee80211_ff_flush(struct ieee80211com *ic, int ac)
116 {
117 struct ieee80211_superg *sg = ic->ic_superg;
118
119 if (sg != NULL && sg->ff_stageq[ac].depth)
120 ieee80211_ff_age(ic, &sg->ff_stageq[ac], 0x7fffffff);
121 }
122
123 /*
124 * See ieee80211_ff_age() for a description of the locking
125 * expectation here.
126 */
127 static __inline void
ieee80211_ff_age_all(struct ieee80211com * ic,int quanta)128 ieee80211_ff_age_all(struct ieee80211com *ic, int quanta)
129 {
130 struct ieee80211_superg *sg = ic->ic_superg;
131
132 if (sg != NULL) {
133 if (sg->ff_stageq[WME_AC_VO].depth)
134 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VO], quanta);
135 if (sg->ff_stageq[WME_AC_VI].depth)
136 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VI], quanta);
137 if (sg->ff_stageq[WME_AC_BE].depth)
138 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BE], quanta);
139 if (sg->ff_stageq[WME_AC_BK].depth)
140 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BK], quanta);
141 }
142 }
143
144 struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
145 int, struct ieee80211_key *);
146 struct mbuf * ieee80211_amsdu_encap(struct ieee80211vap *vap, struct mbuf *m1,
147 int hdrspace, struct ieee80211_key *key);
148
149 struct mbuf *ieee80211_ff_decap(struct ieee80211_node *, struct mbuf *);
150
151 static __inline struct mbuf *
ieee80211_decap_fastframe(struct ieee80211vap * vap,struct ieee80211_node * ni,struct mbuf * m)152 ieee80211_decap_fastframe(struct ieee80211vap *vap, struct ieee80211_node *ni,
153 struct mbuf *m)
154 {
155 return IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
156 ieee80211_ff_decap(ni, m) : m;
157 }
158 #endif /* _KERNEL */
159 #endif /* _NET80211_IEEE80211_SUPERG_H_ */
160