1 /*-
2 * Copyright (c) 2007 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: releng/7.3/sys/net80211/ieee80211_ht.h 176115 2008-02-08 21:29:12Z sam $
26 */
27 #ifndef _NET80211_IEEE80211_HT_H_
28 #define _NET80211_IEEE80211_HT_H_
29
30 /*
31 * 802.11n protocol implementation definitions.
32 */
33
34 #define IEEE80211_AGGR_BAWMAX 64 /* max block ack window size */
35 /* threshold for aging overlapping non-HT bss */
36 #define IEEE80211_NONHT_PRESENT_AGE msecs_to_ticks(60*1000)
37
38 typedef uint16_t ieee80211_seq;
39
40 struct ieee80211_tx_ampdu {
41 u_short txa_flags;
42 #define IEEE80211_AGGR_IMMEDIATE 0x0001 /* BA policy */
43 #define IEEE80211_AGGR_XCHGPEND 0x0002 /* ADDBA response pending */
44 #define IEEE80211_AGGR_RUNNING 0x0004 /* ADDBA response received */
45 #define IEEE80211_AGGR_SETUP 0x0008 /* deferred state setup */
46 #define IEEE80211_AGGR_NAK 0x0010 /* peer NAK'd ADDBA request */
47 uint8_t txa_ac;
48 uint8_t txa_token; /* dialog token */
49 int txa_qbytes; /* data queued (bytes) */
50 short txa_qframes; /* data queued (frames) */
51 ieee80211_seq txa_seqstart;
52 ieee80211_seq txa_start;
53 uint16_t txa_wnd; /* BA window size */
54 uint8_t txa_attempts; /* # setup attempts */
55 int txa_lastrequest;/* time of last ADDBA request */
56 struct ifqueue txa_q; /* packet queue */
57 struct callout txa_timer;
58 void *txa_private; /* driver-private storage */
59 };
60
61 /* return non-zero if AMPDU tx for the TID is running */
62 #define IEEE80211_AMPDU_RUNNING(tap) \
63 (((tap)->txa_flags & IEEE80211_AGGR_RUNNING) != 0)
64
65 /* return non-zero if AMPDU tx for the TID is running or started */
66 #define IEEE80211_AMPDU_REQUESTED(tap) \
67 (((tap)->txa_flags & \
68 (IEEE80211_AGGR_RUNNING|IEEE80211_AGGR_XCHGPEND|IEEE80211_AGGR_NAK)) != 0)
69
70 struct ieee80211_rx_ampdu {
71 int rxa_flags;
72 int rxa_qbytes; /* data queued (bytes) */
73 short rxa_qframes; /* data queued (frames) */
74 ieee80211_seq rxa_seqstart;
75 ieee80211_seq rxa_start; /* start of current BA window */
76 uint16_t rxa_wnd; /* BA window size */
77 int rxa_age; /* age of oldest frame in window */
78 int rxa_nframes; /* frames since ADDBA */
79 struct mbuf *rxa_m[IEEE80211_AGGR_BAWMAX];
80 };
81
82 void ieee80211_ht_attach(struct ieee80211com *);
83 void ieee80211_ht_detach(struct ieee80211com *);
84
85 void ieee80211_ht_announce(struct ieee80211com *);
86
87 extern const int ieee80211_htrates[16];
88 const struct ieee80211_htrateset *ieee80211_get_suphtrates(
89 struct ieee80211com *, const struct ieee80211_channel *);
90
91 struct ieee80211_node;
92 int ieee80211_setup_htrates(struct ieee80211_node *,
93 const uint8_t *htcap, int flags);
94 void ieee80211_setup_basic_htrates(struct ieee80211_node *,
95 const uint8_t *htinfo);
96 struct mbuf *ieee80211_decap_amsdu(struct ieee80211_node *, struct mbuf *);
97 int ieee80211_ampdu_reorder(struct ieee80211_node *, struct mbuf *);
98 void ieee80211_recv_bar(struct ieee80211_node *, struct mbuf *);
99 void ieee80211_ht_node_init(struct ieee80211_node *, const uint8_t *);
100 void ieee80211_ht_node_cleanup(struct ieee80211_node *);
101 struct ieee80211_channel *ieee80211_ht_adjust_channel(struct ieee80211com *,
102 struct ieee80211_channel *, int);
103 void ieee80211_ht_wds_init(struct ieee80211_node *);
104 void ieee80211_ht_node_join(struct ieee80211_node *);
105 void ieee80211_ht_node_leave(struct ieee80211_node *);
106 void ieee80211_htinfo_update(struct ieee80211com *, int protmode);
107 void ieee80211_ht_timeout(struct ieee80211com *);
108 void ieee80211_parse_htcap(struct ieee80211_node *, const uint8_t *);
109 void ieee80211_parse_htinfo(struct ieee80211_node *, const uint8_t *);
110 void ieee80211_recv_action(struct ieee80211_node *,
111 const uint8_t *, const uint8_t *);
112 int ieee80211_ampdu_request(struct ieee80211_node *,
113 struct ieee80211_tx_ampdu *);
114 void ieee80211_ampdu_stop(struct ieee80211_node *,
115 struct ieee80211_tx_ampdu *);
116 int ieee80211_send_bar(struct ieee80211_node *,
117 const struct ieee80211_tx_ampdu *);
118 int ieee80211_send_action(struct ieee80211_node *,
119 int, int, uint16_t [4]);
120 uint8_t *ieee80211_add_htcap(uint8_t *, struct ieee80211_node *);
121 uint8_t *ieee80211_add_htcap_vendor(uint8_t *, struct ieee80211_node *);
122 uint8_t *ieee80211_add_htinfo(uint8_t *, struct ieee80211_node *);
123 uint8_t *ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *);
124 struct ieee80211_beacon_offsets;
125 void ieee80211_ht_update_beacon(struct ieee80211com *,
126 struct ieee80211_beacon_offsets *);
127 #endif /* _NET80211_IEEE80211_HT_H_ */
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