2 * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
26 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 * IEEE 802.11n protocol support.
38 #include <sys/param.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/systm.h>
42 #include <sys/endian.h>
44 #include <sys/socket.h>
47 #include <net/if_var.h>
48 #include <net/if_media.h>
49 #include <net/ethernet.h>
51 #include <netproto/802_11/ieee80211_var.h>
52 #include <netproto/802_11/ieee80211_action.h>
53 #include <netproto/802_11/ieee80211_input.h>
55 /* define here, used throughout file */
56 #define MS(_v, _f) (((_v) & _f) >> _f##_S)
57 #define SM(_v, _f) (((_v) << _f##_S) & _f)
59 const struct ieee80211_mcs_rates ieee80211_htrates
[IEEE80211_HTRATE_MAXSIZE
] = {
60 { 13, 14, 27, 30 }, /* MCS 0 */
61 { 26, 29, 54, 60 }, /* MCS 1 */
62 { 39, 43, 81, 90 }, /* MCS 2 */
63 { 52, 58, 108, 120 }, /* MCS 3 */
64 { 78, 87, 162, 180 }, /* MCS 4 */
65 { 104, 116, 216, 240 }, /* MCS 5 */
66 { 117, 130, 243, 270 }, /* MCS 6 */
67 { 130, 144, 270, 300 }, /* MCS 7 */
68 { 26, 29, 54, 60 }, /* MCS 8 */
69 { 52, 58, 108, 120 }, /* MCS 9 */
70 { 78, 87, 162, 180 }, /* MCS 10 */
71 { 104, 116, 216, 240 }, /* MCS 11 */
72 { 156, 173, 324, 360 }, /* MCS 12 */
73 { 208, 231, 432, 480 }, /* MCS 13 */
74 { 234, 260, 486, 540 }, /* MCS 14 */
75 { 260, 289, 540, 600 }, /* MCS 15 */
76 { 39, 43, 81, 90 }, /* MCS 16 */
77 { 78, 87, 162, 180 }, /* MCS 17 */
78 { 117, 130, 243, 270 }, /* MCS 18 */
79 { 156, 173, 324, 360 }, /* MCS 19 */
80 { 234, 260, 486, 540 }, /* MCS 20 */
81 { 312, 347, 648, 720 }, /* MCS 21 */
82 { 351, 390, 729, 810 }, /* MCS 22 */
83 { 390, 433, 810, 900 }, /* MCS 23 */
84 { 52, 58, 108, 120 }, /* MCS 24 */
85 { 104, 116, 216, 240 }, /* MCS 25 */
86 { 156, 173, 324, 360 }, /* MCS 26 */
87 { 208, 231, 432, 480 }, /* MCS 27 */
88 { 312, 347, 648, 720 }, /* MCS 28 */
89 { 416, 462, 864, 960 }, /* MCS 29 */
90 { 468, 520, 972, 1080 }, /* MCS 30 */
91 { 520, 578, 1080, 1200 }, /* MCS 31 */
92 { 0, 0, 12, 13 }, /* MCS 32 */
93 { 78, 87, 162, 180 }, /* MCS 33 */
94 { 104, 116, 216, 240 }, /* MCS 34 */
95 { 130, 144, 270, 300 }, /* MCS 35 */
96 { 117, 130, 243, 270 }, /* MCS 36 */
97 { 156, 173, 324, 360 }, /* MCS 37 */
98 { 195, 217, 405, 450 }, /* MCS 38 */
99 { 104, 116, 216, 240 }, /* MCS 39 */
100 { 130, 144, 270, 300 }, /* MCS 40 */
101 { 130, 144, 270, 300 }, /* MCS 41 */
102 { 156, 173, 324, 360 }, /* MCS 42 */
103 { 182, 202, 378, 420 }, /* MCS 43 */
104 { 182, 202, 378, 420 }, /* MCS 44 */
105 { 208, 231, 432, 480 }, /* MCS 45 */
106 { 156, 173, 324, 360 }, /* MCS 46 */
107 { 195, 217, 405, 450 }, /* MCS 47 */
108 { 195, 217, 405, 450 }, /* MCS 48 */
109 { 234, 260, 486, 540 }, /* MCS 49 */
110 { 273, 303, 567, 630 }, /* MCS 50 */
111 { 273, 303, 567, 630 }, /* MCS 51 */
112 { 312, 347, 648, 720 }, /* MCS 52 */
113 { 130, 144, 270, 300 }, /* MCS 53 */
114 { 156, 173, 324, 360 }, /* MCS 54 */
115 { 182, 202, 378, 420 }, /* MCS 55 */
116 { 156, 173, 324, 360 }, /* MCS 56 */
117 { 182, 202, 378, 420 }, /* MCS 57 */
118 { 208, 231, 432, 480 }, /* MCS 58 */
119 { 234, 260, 486, 540 }, /* MCS 59 */
120 { 208, 231, 432, 480 }, /* MCS 60 */
121 { 234, 260, 486, 540 }, /* MCS 61 */
122 { 260, 289, 540, 600 }, /* MCS 62 */
123 { 260, 289, 540, 600 }, /* MCS 63 */
124 { 286, 318, 594, 660 }, /* MCS 64 */
125 { 195, 217, 405, 450 }, /* MCS 65 */
126 { 234, 260, 486, 540 }, /* MCS 66 */
127 { 273, 303, 567, 630 }, /* MCS 67 */
128 { 234, 260, 486, 540 }, /* MCS 68 */
129 { 273, 303, 567, 630 }, /* MCS 69 */
130 { 312, 347, 648, 720 }, /* MCS 70 */
131 { 351, 390, 729, 810 }, /* MCS 71 */
132 { 312, 347, 648, 720 }, /* MCS 72 */
133 { 351, 390, 729, 810 }, /* MCS 73 */
134 { 390, 433, 810, 900 }, /* MCS 74 */
135 { 390, 433, 810, 900 }, /* MCS 75 */
136 { 429, 477, 891, 990 }, /* MCS 76 */
139 static int ieee80211_ampdu_age
= -1; /* threshold for ampdu reorder q (ms) */
140 SYSCTL_PROC(_net_wlan
, OID_AUTO
, ampdu_age
, CTLTYPE_INT
| CTLFLAG_RW
,
141 &ieee80211_ampdu_age
, 0, ieee80211_sysctl_msecs_ticks
, "I",
142 "AMPDU max reorder age (ms)");
144 static int ieee80211_recv_bar_ena
= 1;
145 SYSCTL_INT(_net_wlan
, OID_AUTO
, recv_bar
, CTLFLAG_RW
, &ieee80211_recv_bar_ena
,
146 0, "BAR frame processing (ena/dis)");
148 static int ieee80211_addba_timeout
= -1;/* timeout for ADDBA response */
149 SYSCTL_PROC(_net_wlan
, OID_AUTO
, addba_timeout
, CTLTYPE_INT
| CTLFLAG_RW
,
150 &ieee80211_addba_timeout
, 0, ieee80211_sysctl_msecs_ticks
, "I",
151 "ADDBA request timeout (ms)");
152 static int ieee80211_addba_backoff
= -1;/* backoff after max ADDBA requests */
153 SYSCTL_PROC(_net_wlan
, OID_AUTO
, addba_backoff
, CTLTYPE_INT
| CTLFLAG_RW
,
154 &ieee80211_addba_backoff
, 0, ieee80211_sysctl_msecs_ticks
, "I",
155 "ADDBA request backoff (ms)");
156 static int ieee80211_addba_maxtries
= 3;/* max ADDBA requests before backoff */
157 SYSCTL_INT(_net_wlan
, OID_AUTO
, addba_maxtries
, CTLFLAG_RW
,
158 &ieee80211_addba_maxtries
, 0, "max ADDBA requests sent before backoff");
160 static int ieee80211_bar_timeout
= -1; /* timeout waiting for BAR response */
161 static int ieee80211_bar_maxtries
= 50;/* max BAR requests before DELBA */
163 static ieee80211_recv_action_func ht_recv_action_ba_addba_request
;
164 static ieee80211_recv_action_func ht_recv_action_ba_addba_response
;
165 static ieee80211_recv_action_func ht_recv_action_ba_delba
;
166 static ieee80211_recv_action_func ht_recv_action_ht_mimopwrsave
;
167 static ieee80211_recv_action_func ht_recv_action_ht_txchwidth
;
169 static ieee80211_send_action_func ht_send_action_ba_addba
;
170 static ieee80211_send_action_func ht_send_action_ba_delba
;
171 static ieee80211_send_action_func ht_send_action_ht_txchwidth
;
174 ieee80211_ht_init(void)
177 * Setup HT parameters that depends on the clock frequency.
179 ieee80211_ampdu_age
= msecs_to_ticks(500);
180 ieee80211_addba_timeout
= msecs_to_ticks(250);
181 ieee80211_addba_backoff
= msecs_to_ticks(10*1000);
182 ieee80211_bar_timeout
= msecs_to_ticks(250);
184 * Register action frame handlers.
186 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA
,
187 IEEE80211_ACTION_BA_ADDBA_REQUEST
, ht_recv_action_ba_addba_request
);
188 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA
,
189 IEEE80211_ACTION_BA_ADDBA_RESPONSE
, ht_recv_action_ba_addba_response
);
190 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA
,
191 IEEE80211_ACTION_BA_DELBA
, ht_recv_action_ba_delba
);
192 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_HT
,
193 IEEE80211_ACTION_HT_MIMOPWRSAVE
, ht_recv_action_ht_mimopwrsave
);
194 ieee80211_recv_action_register(IEEE80211_ACTION_CAT_HT
,
195 IEEE80211_ACTION_HT_TXCHWIDTH
, ht_recv_action_ht_txchwidth
);
197 ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA
,
198 IEEE80211_ACTION_BA_ADDBA_REQUEST
, ht_send_action_ba_addba
);
199 ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA
,
200 IEEE80211_ACTION_BA_ADDBA_RESPONSE
, ht_send_action_ba_addba
);
201 ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA
,
202 IEEE80211_ACTION_BA_DELBA
, ht_send_action_ba_delba
);
203 ieee80211_send_action_register(IEEE80211_ACTION_CAT_HT
,
204 IEEE80211_ACTION_HT_TXCHWIDTH
, ht_send_action_ht_txchwidth
);
206 SYSINIT(wlan_ht
, SI_SUB_DRIVERS
, SI_ORDER_FIRST
, ieee80211_ht_init
, NULL
);
208 static int ieee80211_ampdu_enable(struct ieee80211_node
*ni
,
209 struct ieee80211_tx_ampdu
*tap
);
210 static int ieee80211_addba_request(struct ieee80211_node
*ni
,
211 struct ieee80211_tx_ampdu
*tap
,
212 int dialogtoken
, int baparamset
, int batimeout
);
213 static int ieee80211_addba_response(struct ieee80211_node
*ni
,
214 struct ieee80211_tx_ampdu
*tap
,
215 int code
, int baparamset
, int batimeout
);
216 static void ieee80211_addba_stop(struct ieee80211_node
*ni
,
217 struct ieee80211_tx_ampdu
*tap
);
218 static void null_addba_response_timeout(struct ieee80211_node
*ni
,
219 struct ieee80211_tx_ampdu
*tap
);
221 static void ieee80211_bar_response(struct ieee80211_node
*ni
,
222 struct ieee80211_tx_ampdu
*tap
, int status
);
223 static void ampdu_tx_stop(struct ieee80211_tx_ampdu
*tap
);
224 static void bar_stop_timer(struct ieee80211_tx_ampdu
*tap
);
225 static int ampdu_rx_start(struct ieee80211_node
*, struct ieee80211_rx_ampdu
*,
226 int baparamset
, int batimeout
, int baseqctl
);
227 static void ampdu_rx_stop(struct ieee80211_node
*, struct ieee80211_rx_ampdu
*);
230 ieee80211_ht_attach(struct ieee80211com
*ic
)
232 /* setup default aggregation policy */
233 ic
->ic_recv_action
= ieee80211_recv_action
;
234 ic
->ic_send_action
= ieee80211_send_action
;
235 ic
->ic_ampdu_enable
= ieee80211_ampdu_enable
;
236 ic
->ic_addba_request
= ieee80211_addba_request
;
237 ic
->ic_addba_response
= ieee80211_addba_response
;
238 ic
->ic_addba_response_timeout
= null_addba_response_timeout
;
239 ic
->ic_addba_stop
= ieee80211_addba_stop
;
240 ic
->ic_bar_response
= ieee80211_bar_response
;
241 ic
->ic_ampdu_rx_start
= ampdu_rx_start
;
242 ic
->ic_ampdu_rx_stop
= ampdu_rx_stop
;
244 ic
->ic_htprotmode
= IEEE80211_PROT_RTSCTS
;
245 ic
->ic_curhtprotmode
= IEEE80211_HTINFO_OPMODE_PURE
;
249 ieee80211_ht_detach(struct ieee80211com
*ic
)
254 ieee80211_ht_vattach(struct ieee80211vap
*vap
)
257 /* driver can override defaults */
258 vap
->iv_ampdu_rxmax
= IEEE80211_HTCAP_MAXRXAMPDU_8K
;
259 vap
->iv_ampdu_density
= IEEE80211_HTCAP_MPDUDENSITY_NA
;
260 vap
->iv_ampdu_limit
= vap
->iv_ampdu_rxmax
;
261 vap
->iv_amsdu_limit
= vap
->iv_htcaps
& IEEE80211_HTCAP_MAXAMSDU
;
262 /* tx aggregation traffic thresholds */
263 vap
->iv_ampdu_mintraffic
[WME_AC_BK
] = 128;
264 vap
->iv_ampdu_mintraffic
[WME_AC_BE
] = 64;
265 vap
->iv_ampdu_mintraffic
[WME_AC_VO
] = 32;
266 vap
->iv_ampdu_mintraffic
[WME_AC_VI
] = 32;
268 if (vap
->iv_htcaps
& IEEE80211_HTC_HT
) {
270 * Device is HT capable; enable all HT-related
271 * facilities by default.
272 * XXX these choices may be too aggressive.
274 vap
->iv_flags_ht
|= IEEE80211_FHT_HT
275 | IEEE80211_FHT_HTCOMPAT
277 if (vap
->iv_htcaps
& IEEE80211_HTCAP_SHORTGI20
)
278 vap
->iv_flags_ht
|= IEEE80211_FHT_SHORTGI20
;
279 /* XXX infer from channel list? */
280 if (vap
->iv_htcaps
& IEEE80211_HTCAP_CHWIDTH40
) {
281 vap
->iv_flags_ht
|= IEEE80211_FHT_USEHT40
;
282 if (vap
->iv_htcaps
& IEEE80211_HTCAP_SHORTGI40
)
283 vap
->iv_flags_ht
|= IEEE80211_FHT_SHORTGI40
;
285 /* enable RIFS if capable */
286 if (vap
->iv_htcaps
& IEEE80211_HTC_RIFS
)
287 vap
->iv_flags_ht
|= IEEE80211_FHT_RIFS
;
289 /* NB: A-MPDU and A-MSDU rx are mandated, these are tx only */
290 vap
->iv_flags_ht
|= IEEE80211_FHT_AMPDU_RX
;
291 if (vap
->iv_htcaps
& IEEE80211_HTC_AMPDU
)
292 vap
->iv_flags_ht
|= IEEE80211_FHT_AMPDU_TX
;
293 vap
->iv_flags_ht
|= IEEE80211_FHT_AMSDU_RX
;
294 if (vap
->iv_htcaps
& IEEE80211_HTC_AMSDU
)
295 vap
->iv_flags_ht
|= IEEE80211_FHT_AMSDU_TX
;
297 if (vap
->iv_htcaps
& IEEE80211_HTCAP_TXSTBC
)
298 vap
->iv_flags_ht
|= IEEE80211_FHT_STBC_TX
;
299 if (vap
->iv_htcaps
& IEEE80211_HTCAP_RXSTBC
)
300 vap
->iv_flags_ht
|= IEEE80211_FHT_STBC_RX
;
302 /* NB: disable default legacy WDS, too many issues right now */
303 if (vap
->iv_flags_ext
& IEEE80211_FEXT_WDSLEGACY
)
304 vap
->iv_flags_ht
&= ~IEEE80211_FHT_HT
;
308 ieee80211_ht_vdetach(struct ieee80211vap
*vap
)
313 ht_getrate(struct ieee80211com
*ic
, int index
, enum ieee80211_phymode mode
,
318 mword
= ieee80211_rate2media(ic
, index
| IEEE80211_RATE_MCS
, mode
);
319 if (IFM_SUBTYPE(mword
) != IFM_IEEE80211_MCS
)
323 rate
= ieee80211_htrates
[index
].ht20_rate_800ns
;
326 rate
= ieee80211_htrates
[index
].ht20_rate_400ns
;
329 rate
= ieee80211_htrates
[index
].ht40_rate_800ns
;
332 rate
= ieee80211_htrates
[index
].ht40_rate_400ns
;
338 static struct printranges
{
349 { 32, 0, 1, 2, IEEE80211_HTC_TXMCS32
},
350 { 33, 38, 2, 0, IEEE80211_HTC_TXUNEQUAL
},
351 { 39, 52, 3, 0, IEEE80211_HTC_TXUNEQUAL
},
352 { 53, 76, 4, 0, IEEE80211_HTC_TXUNEQUAL
},
357 ht_rateprint(struct ieee80211com
*ic
, enum ieee80211_phymode mode
, int ratetype
)
359 int minrate
, maxrate
;
360 struct printranges
*range
;
362 for (range
= ranges
; range
->txstream
!= 0; range
++) {
363 if (ic
->ic_txstream
< range
->txstream
)
365 if (range
->htcapflags
&&
366 (ic
->ic_htcaps
& range
->htcapflags
) == 0)
368 if (ratetype
< range
->ratetype
)
370 minrate
= ht_getrate(ic
, range
->minmcs
, mode
, ratetype
);
371 maxrate
= ht_getrate(ic
, range
->maxmcs
, mode
, ratetype
);
373 ic_printf(ic
, "MCS %d-%d: %d%sMbps - %d%sMbps\n",
374 range
->minmcs
, range
->maxmcs
,
375 minrate
/2, ((minrate
& 0x1) != 0 ? ".5" : ""),
376 maxrate
/2, ((maxrate
& 0x1) != 0 ? ".5" : ""));
378 ic_printf(ic
, "MCS %d: %d%sMbps\n", range
->minmcs
,
379 minrate
/2, ((minrate
& 0x1) != 0 ? ".5" : ""));
385 ht_announce(struct ieee80211com
*ic
, enum ieee80211_phymode mode
)
387 const char *modestr
= ieee80211_phymode_name
[mode
];
389 ic_printf(ic
, "%s MCS 20MHz\n", modestr
);
390 ht_rateprint(ic
, mode
, 0);
391 if (ic
->ic_htcaps
& IEEE80211_HTCAP_SHORTGI20
) {
392 ic_printf(ic
, "%s MCS 20MHz SGI\n", modestr
);
393 ht_rateprint(ic
, mode
, 1);
395 if (ic
->ic_htcaps
& IEEE80211_HTCAP_CHWIDTH40
) {
396 ic_printf(ic
, "%s MCS 40MHz:\n", modestr
);
397 ht_rateprint(ic
, mode
, 2);
399 if ((ic
->ic_htcaps
& IEEE80211_HTCAP_CHWIDTH40
) &&
400 (ic
->ic_htcaps
& IEEE80211_HTCAP_SHORTGI40
)) {
401 ic_printf(ic
, "%s MCS 40MHz SGI:\n", modestr
);
402 ht_rateprint(ic
, mode
, 3);
407 ieee80211_ht_announce(struct ieee80211com
*ic
)
410 if (isset(ic
->ic_modecaps
, IEEE80211_MODE_11NA
) ||
411 isset(ic
->ic_modecaps
, IEEE80211_MODE_11NG
))
412 ic_printf(ic
, "%dT%dR\n", ic
->ic_txstream
, ic
->ic_rxstream
);
413 if (isset(ic
->ic_modecaps
, IEEE80211_MODE_11NA
))
414 ht_announce(ic
, IEEE80211_MODE_11NA
);
415 if (isset(ic
->ic_modecaps
, IEEE80211_MODE_11NG
))
416 ht_announce(ic
, IEEE80211_MODE_11NG
);
419 static struct ieee80211_htrateset htrateset
;
421 const struct ieee80211_htrateset
*
422 ieee80211_get_suphtrates(struct ieee80211com
*ic
,
423 const struct ieee80211_channel
*c
)
425 #define ADDRATE(x) do { \
426 htrateset.rs_rates[htrateset.rs_nrates] = x; \
427 htrateset.rs_nrates++; \
431 memset(&htrateset
, 0, sizeof(struct ieee80211_htrateset
));
432 for (i
= 0; i
< ic
->ic_txstream
* 8; i
++)
434 if ((ic
->ic_htcaps
& IEEE80211_HTCAP_CHWIDTH40
) &&
435 (ic
->ic_htcaps
& IEEE80211_HTC_TXMCS32
))
437 if (ic
->ic_htcaps
& IEEE80211_HTC_TXUNEQUAL
) {
438 if (ic
->ic_txstream
>= 2) {
439 for (i
= 33; i
<= 38; i
++)
442 if (ic
->ic_txstream
>= 3) {
443 for (i
= 39; i
<= 52; i
++)
446 if (ic
->ic_txstream
== 4) {
447 for (i
= 53; i
<= 76; i
++)
456 * Receive processing.
460 * Decap the encapsulated A-MSDU frames and dispatch all but
461 * the last for delivery. The last frame is returned for
462 * delivery via the normal path.
465 ieee80211_decap_amsdu(struct ieee80211_node
*ni
, struct mbuf
*m
)
467 struct ieee80211vap
*vap
= ni
->ni_vap
;
471 /* discard 802.3 header inserted by ieee80211_decap */
472 m_adj(m
, sizeof(struct ether_header
));
474 vap
->iv_stats
.is_amsdu_decap
++;
478 * Decap the first frame, bust it apart from the
479 * remainder and deliver. We leave the last frame
480 * delivery to the caller (for consistency with other
481 * code paths, could also do it here).
483 m
= ieee80211_decap1(m
, &framelen
);
485 IEEE80211_DISCARD_MAC(vap
, IEEE80211_MSG_ANY
,
486 ni
->ni_macaddr
, "a-msdu", "%s", "decap failed");
487 vap
->iv_stats
.is_amsdu_tooshort
++;
490 if (m
->m_pkthdr
.len
== framelen
)
492 n
= m_split(m
, framelen
, M_NOWAIT
);
494 IEEE80211_DISCARD_MAC(vap
, IEEE80211_MSG_ANY
,
495 ni
->ni_macaddr
, "a-msdu",
496 "%s", "unable to split encapsulated frames");
497 vap
->iv_stats
.is_amsdu_split
++;
498 m_freem(m
); /* NB: must reclaim */
501 vap
->iv_deliver_data(vap
, ni
, m
);
504 * Remove frame contents; each intermediate frame
505 * is required to be aligned to a 4-byte boundary.
508 m_adj(m
, roundup2(framelen
, 4) - framelen
); /* padding */
510 return m
; /* last delivered by caller */
514 * Purge all frames in the A-MPDU re-order queue.
517 ampdu_rx_purge(struct ieee80211_rx_ampdu
*rap
)
522 for (i
= 0; i
< rap
->rxa_wnd
; i
++) {
525 rap
->rxa_m
[i
] = NULL
;
526 rap
->rxa_qbytes
-= m
->m_pkthdr
.len
;
528 if (--rap
->rxa_qframes
== 0)
532 KASSERT(rap
->rxa_qbytes
== 0 && rap
->rxa_qframes
== 0,
533 ("lost %u data, %u frames on ampdu rx q",
534 rap
->rxa_qbytes
, rap
->rxa_qframes
));
538 * Start A-MPDU rx/re-order processing for the specified TID.
541 ampdu_rx_start(struct ieee80211_node
*ni
, struct ieee80211_rx_ampdu
*rap
,
542 int baparamset
, int batimeout
, int baseqctl
)
544 int bufsiz
= MS(baparamset
, IEEE80211_BAPS_BUFSIZ
);
546 if (rap
->rxa_flags
& IEEE80211_AGGR_RUNNING
) {
548 * AMPDU previously setup and not terminated with a DELBA,
549 * flush the reorder q's in case anything remains.
553 memset(rap
, 0, sizeof(*rap
));
554 rap
->rxa_wnd
= (bufsiz
== 0) ?
555 IEEE80211_AGGR_BAWMAX
: min(bufsiz
, IEEE80211_AGGR_BAWMAX
);
556 rap
->rxa_start
= MS(baseqctl
, IEEE80211_BASEQ_START
);
557 rap
->rxa_flags
|= IEEE80211_AGGR_RUNNING
| IEEE80211_AGGR_XCHGPEND
;
563 * Public function; manually setup the RX ampdu state.
566 ieee80211_ampdu_rx_start_ext(struct ieee80211_node
*ni
, int tid
, int seq
, int baw
)
568 struct ieee80211_rx_ampdu
*rap
;
570 /* XXX TODO: sanity check tid, seq, baw */
572 rap
= &ni
->ni_rx_ampdu
[tid
];
574 if (rap
->rxa_flags
& IEEE80211_AGGR_RUNNING
) {
576 * AMPDU previously setup and not terminated with a DELBA,
577 * flush the reorder q's in case anything remains.
582 memset(rap
, 0, sizeof(*rap
));
583 rap
->rxa_wnd
= (baw
== 0) ?
584 IEEE80211_AGGR_BAWMAX
: min(baw
, IEEE80211_AGGR_BAWMAX
);
585 rap
->rxa_start
= seq
;
586 rap
->rxa_flags
|= IEEE80211_AGGR_RUNNING
| IEEE80211_AGGR_XCHGPEND
;
588 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
, ni
,
589 "%s: tid=%d, start=%d, wnd=%d, flags=0x%08x\n",
600 * Stop A-MPDU rx processing for the specified TID.
603 ampdu_rx_stop(struct ieee80211_node
*ni
, struct ieee80211_rx_ampdu
*rap
)
607 rap
->rxa_flags
&= ~(IEEE80211_AGGR_RUNNING
| IEEE80211_AGGR_XCHGPEND
);
611 * Dispatch a frame from the A-MPDU reorder queue. The
612 * frame is fed back into ieee80211_input marked with an
613 * M_AMPDU_MPDU flag so it doesn't come back to us (it also
614 * permits ieee80211_input to optimize re-processing).
617 ampdu_dispatch(struct ieee80211_node
*ni
, struct mbuf
*m
)
619 m
->m_flags
|= M_AMPDU_MPDU
; /* bypass normal processing */
620 /* NB: rssi and noise are ignored w/ M_AMPDU_MPDU set */
621 (void) ieee80211_input(ni
, m
, 0, 0);
625 * Dispatch as many frames as possible from the re-order queue.
626 * Frames will always be "at the front"; we process all frames
627 * up to the first empty slot in the window. On completion we
628 * cleanup state if there are still pending frames in the current
629 * BA window. We assume the frame at slot 0 is already handled
630 * by the caller; we always start at slot 1.
633 ampdu_rx_dispatch(struct ieee80211_rx_ampdu
*rap
, struct ieee80211_node
*ni
)
635 struct ieee80211vap
*vap
= ni
->ni_vap
;
639 /* flush run of frames */
640 for (i
= 1; i
< rap
->rxa_wnd
; i
++) {
644 rap
->rxa_m
[i
] = NULL
;
645 rap
->rxa_qbytes
-= m
->m_pkthdr
.len
;
648 ampdu_dispatch(ni
, m
);
651 * If frames remain, copy the mbuf pointers down so
652 * they correspond to the offsets in the new window.
654 if (rap
->rxa_qframes
!= 0) {
655 int n
= rap
->rxa_qframes
, j
;
656 for (j
= i
+1; j
< rap
->rxa_wnd
; j
++) {
657 if (rap
->rxa_m
[j
] != NULL
) {
658 rap
->rxa_m
[j
-i
] = rap
->rxa_m
[j
];
659 rap
->rxa_m
[j
] = NULL
;
664 KASSERT(n
== 0, ("lost %d frames", n
));
665 vap
->iv_stats
.is_ampdu_rx_copy
+= rap
->rxa_qframes
;
668 * Adjust the start of the BA window to
669 * reflect the frames just dispatched.
671 rap
->rxa_start
= IEEE80211_SEQ_ADD(rap
->rxa_start
, i
);
672 vap
->iv_stats
.is_ampdu_rx_oor
+= i
;
676 * Dispatch all frames in the A-MPDU re-order queue.
679 ampdu_rx_flush(struct ieee80211_node
*ni
, struct ieee80211_rx_ampdu
*rap
)
681 struct ieee80211vap
*vap
= ni
->ni_vap
;
685 for (i
= 0; i
< rap
->rxa_wnd
; i
++) {
689 rap
->rxa_m
[i
] = NULL
;
690 rap
->rxa_qbytes
-= m
->m_pkthdr
.len
;
692 vap
->iv_stats
.is_ampdu_rx_oor
++;
694 ampdu_dispatch(ni
, m
);
695 if (rap
->rxa_qframes
== 0)
701 * Dispatch all frames in the A-MPDU re-order queue
702 * preceding the specified sequence number. This logic
703 * handles window moves due to a received MSDU or BAR.
706 ampdu_rx_flush_upto(struct ieee80211_node
*ni
,
707 struct ieee80211_rx_ampdu
*rap
, ieee80211_seq winstart
)
709 struct ieee80211vap
*vap
= ni
->ni_vap
;
715 * Flush any complete MSDU's with a sequence number lower
716 * than winstart. Gaps may exist. Note that we may actually
717 * dispatch frames past winstart if a run continues; this is
718 * an optimization that avoids having to do a separate pass
719 * to dispatch frames after moving the BA window start.
721 seqno
= rap
->rxa_start
;
722 for (i
= 0; i
< rap
->rxa_wnd
; i
++) {
725 rap
->rxa_m
[i
] = NULL
;
726 rap
->rxa_qbytes
-= m
->m_pkthdr
.len
;
728 vap
->iv_stats
.is_ampdu_rx_oor
++;
730 ampdu_dispatch(ni
, m
);
732 if (!IEEE80211_SEQ_BA_BEFORE(seqno
, winstart
))
735 seqno
= IEEE80211_SEQ_INC(seqno
);
738 * If frames remain, copy the mbuf pointers down so
739 * they correspond to the offsets in the new window.
741 if (rap
->rxa_qframes
!= 0) {
742 int n
= rap
->rxa_qframes
, j
;
744 /* NB: this loop assumes i > 0 and/or rxa_m[0] is NULL */
745 KASSERT(rap
->rxa_m
[0] == NULL
,
746 ("%s: BA window slot 0 occupied", __func__
));
747 for (j
= i
+1; j
< rap
->rxa_wnd
; j
++) {
748 if (rap
->rxa_m
[j
] != NULL
) {
749 rap
->rxa_m
[j
-i
] = rap
->rxa_m
[j
];
750 rap
->rxa_m
[j
] = NULL
;
755 KASSERT(n
== 0, ("%s: lost %d frames, qframes %d off %d "
756 "BA win <%d:%d> winstart %d",
757 __func__
, n
, rap
->rxa_qframes
, i
, rap
->rxa_start
,
758 IEEE80211_SEQ_ADD(rap
->rxa_start
, rap
->rxa_wnd
-1),
760 vap
->iv_stats
.is_ampdu_rx_copy
+= rap
->rxa_qframes
;
763 * Move the start of the BA window; we use the
764 * sequence number of the last MSDU that was
765 * passed up the stack+1 or winstart if stopped on
766 * a gap in the reorder buffer.
768 rap
->rxa_start
= seqno
;
772 * Process a received QoS data frame for an HT station. Handle
773 * A-MPDU reordering: if this frame is received out of order
774 * and falls within the BA window hold onto it. Otherwise if
775 * this frame completes a run, flush any pending frames. We
776 * return 1 if the frame is consumed. A 0 is returned if
777 * the frame should be processed normally by the caller.
780 ieee80211_ampdu_reorder(struct ieee80211_node
*ni
, struct mbuf
*m
)
782 #define IEEE80211_FC0_QOSDATA \
783 (IEEE80211_FC0_TYPE_DATA|IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_VERSION_0)
784 #define PROCESS 0 /* caller should process frame */
785 #define CONSUMED 1 /* frame consumed, caller does nothing */
786 struct ieee80211vap
*vap
= ni
->ni_vap
;
787 struct ieee80211_qosframe
*wh
;
788 struct ieee80211_rx_ampdu
*rap
;
793 KASSERT((m
->m_flags
& (M_AMPDU
| M_AMPDU_MPDU
)) == M_AMPDU
,
794 ("!a-mpdu or already re-ordered, flags 0x%x", m
->m_flags
));
795 KASSERT(ni
->ni_flags
& IEEE80211_NODE_HT
, ("not an HT sta"));
797 /* NB: m_len known to be sufficient */
798 wh
= mtod(m
, struct ieee80211_qosframe
*);
799 if (wh
->i_fc
[0] != IEEE80211_FC0_QOSDATA
) {
801 * Not QoS data, shouldn't get here but just
802 * return it to the caller for processing.
806 if (IEEE80211_IS_DSTODS(wh
))
807 tid
= ((struct ieee80211_qosframe_addr4
*)wh
)->i_qos
[0];
810 tid
&= IEEE80211_QOS_TID
;
811 rap
= &ni
->ni_rx_ampdu
[tid
];
812 if ((rap
->rxa_flags
& IEEE80211_AGGR_XCHGPEND
) == 0) {
814 * No ADDBA request yet, don't touch.
818 rxseq
= le16toh(*(uint16_t *)wh
->i_seq
);
819 if ((rxseq
& IEEE80211_SEQ_FRAG_MASK
) != 0) {
821 * Fragments are not allowed; toss.
823 IEEE80211_DISCARD_MAC(vap
,
824 IEEE80211_MSG_INPUT
| IEEE80211_MSG_11N
, ni
->ni_macaddr
,
825 "A-MPDU", "fragment, rxseq 0x%x tid %u%s", rxseq
, tid
,
826 wh
->i_fc
[1] & IEEE80211_FC1_RETRY
? " (retransmit)" : "");
827 vap
->iv_stats
.is_ampdu_rx_drop
++;
828 IEEE80211_NODE_STAT(ni
, rx_drop
);
832 rxseq
>>= IEEE80211_SEQ_SEQ_SHIFT
;
835 if (rxseq
== rap
->rxa_start
) {
837 * First frame in window.
839 if (rap
->rxa_qframes
!= 0) {
841 * Dispatch as many packets as we can.
843 KASSERT(rap
->rxa_m
[0] == NULL
, ("unexpected dup"));
844 ampdu_dispatch(ni
, m
);
845 ampdu_rx_dispatch(rap
, ni
);
849 * In order; advance window and notify
850 * caller to dispatch directly.
852 rap
->rxa_start
= IEEE80211_SEQ_INC(rxseq
);
857 * Frame is out of order; store if in the BA window.
859 /* calculate offset in BA window */
860 off
= IEEE80211_SEQ_SUB(rxseq
, rap
->rxa_start
);
861 if (off
< rap
->rxa_wnd
) {
863 * Common case (hopefully): in the BA window.
864 * Sec 9.10.7.6.2 a) (p.137)
868 * Check for frames sitting too long in the reorder queue.
869 * This should only ever happen if frames are not delivered
870 * without the sender otherwise notifying us (e.g. with a
871 * BAR to move the window). Typically this happens because
872 * of vendor bugs that cause the sequence number to jump.
873 * When this happens we get a gap in the reorder queue that
874 * leaves frame sitting on the queue until they get pushed
875 * out due to window moves. When the vendor does not send
876 * BAR this move only happens due to explicit packet sends
878 * NB: we only track the time of the oldest frame in the
879 * reorder q; this means that if we flush we might push
880 * frames that still "new"; if this happens then subsequent
881 * frames will result in BA window moves which cost something
882 * but is still better than a big throughput dip.
884 if (rap
->rxa_qframes
!= 0) {
885 /* XXX honor batimeout? */
886 if (ticks
- rap
->rxa_age
> ieee80211_ampdu_age
) {
888 * Too long since we received the first
889 * frame; flush the reorder buffer.
891 if (rap
->rxa_qframes
!= 0) {
892 vap
->iv_stats
.is_ampdu_rx_age
+=
894 ampdu_rx_flush(ni
, rap
);
896 rap
->rxa_start
= IEEE80211_SEQ_INC(rxseq
);
901 * First frame, start aging timer.
903 rap
->rxa_age
= ticks
;
907 if (rap
->rxa_m
[off
] == NULL
) {
910 rap
->rxa_qbytes
+= m
->m_pkthdr
.len
;
911 vap
->iv_stats
.is_ampdu_rx_reorder
++;
913 IEEE80211_DISCARD_MAC(vap
,
914 IEEE80211_MSG_INPUT
| IEEE80211_MSG_11N
,
915 ni
->ni_macaddr
, "a-mpdu duplicate",
916 "seqno %u tid %u BA win <%u:%u>",
917 rxseq
, tid
, rap
->rxa_start
,
918 IEEE80211_SEQ_ADD(rap
->rxa_start
, rap
->rxa_wnd
-1));
919 vap
->iv_stats
.is_rx_dup
++;
920 IEEE80211_NODE_STAT(ni
, rx_dup
);
925 if (off
< IEEE80211_SEQ_BA_RANGE
) {
927 * Outside the BA window, but within range;
928 * flush the reorder q and move the window.
929 * Sec 9.10.7.6.2 b) (p.138)
931 IEEE80211_NOTE(vap
, IEEE80211_MSG_11N
, ni
,
932 "move BA win <%u:%u> (%u frames) rxseq %u tid %u",
934 IEEE80211_SEQ_ADD(rap
->rxa_start
, rap
->rxa_wnd
-1),
935 rap
->rxa_qframes
, rxseq
, tid
);
936 vap
->iv_stats
.is_ampdu_rx_move
++;
939 * The spec says to flush frames up to but not including:
940 * WinStart_B = rxseq - rap->rxa_wnd + 1
941 * Then insert the frame or notify the caller to process
942 * it immediately. We can safely do this by just starting
943 * over again because we know the frame will now be within
946 /* NB: rxa_wnd known to be >0 */
947 ampdu_rx_flush_upto(ni
, rap
,
948 IEEE80211_SEQ_SUB(rxseq
, rap
->rxa_wnd
-1));
952 * Outside the BA window and out of range; toss.
953 * Sec 9.10.7.6.2 c) (p.138)
955 IEEE80211_DISCARD_MAC(vap
,
956 IEEE80211_MSG_INPUT
| IEEE80211_MSG_11N
, ni
->ni_macaddr
,
957 "MPDU", "BA win <%u:%u> (%u frames) rxseq %u tid %u%s",
959 IEEE80211_SEQ_ADD(rap
->rxa_start
, rap
->rxa_wnd
-1),
960 rap
->rxa_qframes
, rxseq
, tid
,
961 wh
->i_fc
[1] & IEEE80211_FC1_RETRY
? " (retransmit)" : "");
962 vap
->iv_stats
.is_ampdu_rx_drop
++;
963 IEEE80211_NODE_STAT(ni
, rx_drop
);
969 #undef IEEE80211_FC0_QOSDATA
973 * Process a BAR ctl frame. Dispatch all frames up to
974 * the sequence number of the frame. If this frame is
975 * out of range it's discarded.
978 ieee80211_recv_bar(struct ieee80211_node
*ni
, struct mbuf
*m0
)
980 struct ieee80211vap
*vap
= ni
->ni_vap
;
981 struct ieee80211_frame_bar
*wh
;
982 struct ieee80211_rx_ampdu
*rap
;
986 if (!ieee80211_recv_bar_ena
) {
988 IEEE80211_DISCARD_MAC(vap
, IEEE80211_MSG_11N
,
989 ni
->ni_macaddr
, "BAR", "%s", "processing disabled");
991 vap
->iv_stats
.is_ampdu_bar_bad
++;
994 wh
= mtod(m0
, struct ieee80211_frame_bar
*);
995 /* XXX check basic BAR */
996 tid
= MS(le16toh(wh
->i_ctl
), IEEE80211_BAR_TID
);
997 rap
= &ni
->ni_rx_ampdu
[tid
];
998 if ((rap
->rxa_flags
& IEEE80211_AGGR_XCHGPEND
) == 0) {
1000 * No ADDBA request yet, don't touch.
1002 IEEE80211_DISCARD_MAC(vap
,
1003 IEEE80211_MSG_INPUT
| IEEE80211_MSG_11N
,
1004 ni
->ni_macaddr
, "BAR", "no BA stream, tid %u", tid
);
1005 vap
->iv_stats
.is_ampdu_bar_bad
++;
1008 vap
->iv_stats
.is_ampdu_bar_rx
++;
1009 rxseq
= le16toh(wh
->i_seq
) >> IEEE80211_SEQ_SEQ_SHIFT
;
1010 if (rxseq
== rap
->rxa_start
)
1012 /* calculate offset in BA window */
1013 off
= IEEE80211_SEQ_SUB(rxseq
, rap
->rxa_start
);
1014 if (off
< IEEE80211_SEQ_BA_RANGE
) {
1016 * Flush the reorder q up to rxseq and move the window.
1017 * Sec 9.10.7.6.3 a) (p.138)
1019 IEEE80211_NOTE(vap
, IEEE80211_MSG_11N
, ni
,
1020 "BAR moves BA win <%u:%u> (%u frames) rxseq %u tid %u",
1022 IEEE80211_SEQ_ADD(rap
->rxa_start
, rap
->rxa_wnd
-1),
1023 rap
->rxa_qframes
, rxseq
, tid
);
1024 vap
->iv_stats
.is_ampdu_bar_move
++;
1026 ampdu_rx_flush_upto(ni
, rap
, rxseq
);
1027 if (off
>= rap
->rxa_wnd
) {
1029 * BAR specifies a window start to the right of BA
1030 * window; we must move it explicitly since
1031 * ampdu_rx_flush_upto will not.
1033 rap
->rxa_start
= rxseq
;
1037 * Out of range; toss.
1038 * Sec 9.10.7.6.3 b) (p.138)
1040 IEEE80211_DISCARD_MAC(vap
,
1041 IEEE80211_MSG_INPUT
| IEEE80211_MSG_11N
, ni
->ni_macaddr
,
1042 "BAR", "BA win <%u:%u> (%u frames) rxseq %u tid %u%s",
1044 IEEE80211_SEQ_ADD(rap
->rxa_start
, rap
->rxa_wnd
-1),
1045 rap
->rxa_qframes
, rxseq
, tid
,
1046 wh
->i_fc
[1] & IEEE80211_FC1_RETRY
? " (retransmit)" : "");
1047 vap
->iv_stats
.is_ampdu_bar_oow
++;
1048 IEEE80211_NODE_STAT(ni
, rx_drop
);
1053 * Setup HT-specific state in a node. Called only
1054 * when HT use is negotiated so we don't do extra
1055 * work for temporary and/or legacy sta's.
1058 ieee80211_ht_node_init(struct ieee80211_node
*ni
)
1060 struct ieee80211_tx_ampdu
*tap
;
1063 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
1069 if (ni
->ni_flags
& IEEE80211_NODE_HT
) {
1071 * Clean AMPDU state on re-associate. This handles the case
1072 * where a station leaves w/o notifying us and then returns
1073 * before node is reaped for inactivity.
1075 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
1077 "%s: calling cleanup (%p)",
1079 ieee80211_ht_node_cleanup(ni
);
1081 for (tid
= 0; tid
< WME_NUM_TID
; tid
++) {
1082 tap
= &ni
->ni_tx_ampdu
[tid
];
1085 ieee80211_txampdu_init_pps(tap
);
1086 /* NB: further initialization deferred */
1088 ni
->ni_flags
|= IEEE80211_NODE_HT
| IEEE80211_NODE_AMPDU
;
1092 * Cleanup HT-specific state in a node. Called only
1093 * when HT use has been marked.
1096 ieee80211_ht_node_cleanup(struct ieee80211_node
*ni
)
1098 struct ieee80211com
*ic
= ni
->ni_ic
;
1101 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
1106 KASSERT(ni
->ni_flags
& IEEE80211_NODE_HT
, ("not an HT node"));
1108 /* XXX optimize this */
1109 for (i
= 0; i
< WME_NUM_TID
; i
++) {
1110 struct ieee80211_tx_ampdu
*tap
= &ni
->ni_tx_ampdu
[i
];
1111 if (tap
->txa_flags
& IEEE80211_AGGR_SETUP
)
1114 for (i
= 0; i
< WME_NUM_TID
; i
++)
1115 ic
->ic_ampdu_rx_stop(ni
, &ni
->ni_rx_ampdu
[i
]);
1118 ni
->ni_flags
&= ~IEEE80211_NODE_HT_ALL
;
1122 * Age out HT resources for a station.
1125 ieee80211_ht_node_age(struct ieee80211_node
*ni
)
1127 struct ieee80211vap
*vap
= ni
->ni_vap
;
1130 KASSERT(ni
->ni_flags
& IEEE80211_NODE_HT
, ("not an HT sta"));
1132 for (tid
= 0; tid
< WME_NUM_TID
; tid
++) {
1133 struct ieee80211_rx_ampdu
*rap
;
1135 rap
= &ni
->ni_rx_ampdu
[tid
];
1136 if ((rap
->rxa_flags
& IEEE80211_AGGR_XCHGPEND
) == 0)
1138 if (rap
->rxa_qframes
== 0)
1141 * Check for frames sitting too long in the reorder queue.
1142 * See above for more details on what's happening here.
1144 /* XXX honor batimeout? */
1145 if (ticks
- rap
->rxa_age
> ieee80211_ampdu_age
) {
1147 * Too long since we received the first
1148 * frame; flush the reorder buffer.
1150 vap
->iv_stats
.is_ampdu_rx_age
+= rap
->rxa_qframes
;
1151 ampdu_rx_flush(ni
, rap
);
1156 static struct ieee80211_channel
*
1157 findhtchan(struct ieee80211com
*ic
, struct ieee80211_channel
*c
, int htflags
)
1159 return ieee80211_find_channel(ic
, c
->ic_freq
,
1160 (c
->ic_flags
&~ IEEE80211_CHAN_HT
) | htflags
);
1164 * Adjust a channel to be HT/non-HT according to the vap's configuration.
1166 struct ieee80211_channel
*
1167 ieee80211_ht_adjust_channel(struct ieee80211com
*ic
,
1168 struct ieee80211_channel
*chan
, int flags
)
1170 struct ieee80211_channel
*c
;
1172 if (flags
& IEEE80211_FHT_HT
) {
1173 /* promote to HT if possible */
1174 if (flags
& IEEE80211_FHT_USEHT40
) {
1175 if (!IEEE80211_IS_CHAN_HT40(chan
)) {
1176 /* NB: arbitrarily pick ht40+ over ht40- */
1177 c
= findhtchan(ic
, chan
, IEEE80211_CHAN_HT40U
);
1179 c
= findhtchan(ic
, chan
,
1180 IEEE80211_CHAN_HT40D
);
1182 c
= findhtchan(ic
, chan
,
1183 IEEE80211_CHAN_HT20
);
1187 } else if (!IEEE80211_IS_CHAN_HT20(chan
)) {
1188 c
= findhtchan(ic
, chan
, IEEE80211_CHAN_HT20
);
1192 } else if (IEEE80211_IS_CHAN_HT(chan
)) {
1193 /* demote to legacy, HT use is disabled */
1194 c
= ieee80211_find_channel(ic
, chan
->ic_freq
,
1195 chan
->ic_flags
&~ IEEE80211_CHAN_HT
);
1203 * Setup HT-specific state for a legacy WDS peer.
1206 ieee80211_ht_wds_init(struct ieee80211_node
*ni
)
1208 struct ieee80211vap
*vap
= ni
->ni_vap
;
1209 struct ieee80211_tx_ampdu
*tap
;
1212 KASSERT(vap
->iv_flags_ht
& IEEE80211_FHT_HT
, ("no HT requested"));
1214 /* XXX check scan cache in case peer has an ap and we have info */
1216 * If setup with a legacy channel; locate an HT channel.
1217 * Otherwise if the inherited channel (from a companion
1218 * AP) is suitable use it so we use the same location
1219 * for the extension channel).
1221 ni
->ni_chan
= ieee80211_ht_adjust_channel(ni
->ni_ic
,
1222 ni
->ni_chan
, ieee80211_htchanflags(ni
->ni_chan
));
1225 if (vap
->iv_flags_ht
& IEEE80211_FHT_SHORTGI20
)
1226 ni
->ni_htcap
|= IEEE80211_HTCAP_SHORTGI20
;
1227 if (IEEE80211_IS_CHAN_HT40(ni
->ni_chan
)) {
1228 ni
->ni_htcap
|= IEEE80211_HTCAP_CHWIDTH40
;
1230 if (IEEE80211_IS_CHAN_HT40U(ni
->ni_chan
))
1231 ni
->ni_ht2ndchan
= IEEE80211_HTINFO_2NDCHAN_ABOVE
;
1232 else if (IEEE80211_IS_CHAN_HT40D(ni
->ni_chan
))
1233 ni
->ni_ht2ndchan
= IEEE80211_HTINFO_2NDCHAN_BELOW
;
1234 if (vap
->iv_flags_ht
& IEEE80211_FHT_SHORTGI40
)
1235 ni
->ni_htcap
|= IEEE80211_HTCAP_SHORTGI40
;
1238 ni
->ni_ht2ndchan
= IEEE80211_HTINFO_2NDCHAN_NONE
;
1240 ni
->ni_htctlchan
= ni
->ni_chan
->ic_ieee
;
1241 if (vap
->iv_flags_ht
& IEEE80211_FHT_RIFS
)
1242 ni
->ni_flags
|= IEEE80211_NODE_RIFS
;
1243 /* XXX does it make sense to enable SMPS? */
1245 ni
->ni_htopmode
= 0; /* XXX need protection state */
1246 ni
->ni_htstbc
= 0; /* XXX need info */
1248 for (tid
= 0; tid
< WME_NUM_TID
; tid
++) {
1249 tap
= &ni
->ni_tx_ampdu
[tid
];
1251 ieee80211_txampdu_init_pps(tap
);
1253 /* NB: AMPDU tx/rx governed by IEEE80211_FHT_AMPDU_{TX,RX} */
1254 ni
->ni_flags
|= IEEE80211_NODE_HT
| IEEE80211_NODE_AMPDU
;
1258 * Notify hostap vaps of a change in the HTINFO ie.
1261 htinfo_notify(struct ieee80211com
*ic
)
1263 struct ieee80211vap
*vap
;
1266 IEEE80211_LOCK_ASSERT(ic
);
1268 TAILQ_FOREACH(vap
, &ic
->ic_vaps
, iv_next
) {
1269 if (vap
->iv_opmode
!= IEEE80211_M_HOSTAP
)
1271 if (vap
->iv_state
!= IEEE80211_S_RUN
||
1272 !IEEE80211_IS_CHAN_HT(vap
->iv_bss
->ni_chan
))
1276 IEEE80211_MSG_ASSOC
| IEEE80211_MSG_11N
,
1278 "HT bss occupancy change: %d sta, %d ht, "
1279 "%d ht40%s, HT protmode now 0x%x"
1281 , ic
->ic_ht_sta_assoc
1282 , ic
->ic_ht40_sta_assoc
1283 , (ic
->ic_flags_ht
& IEEE80211_FHT_NONHT_PR
) ?
1284 ", non-HT sta present" : ""
1285 , ic
->ic_curhtprotmode
);
1288 ieee80211_beacon_notify(vap
, IEEE80211_BEACON_HTINFO
);
1293 * Calculate HT protection mode from current
1294 * state and handle updates.
1297 htinfo_update(struct ieee80211com
*ic
)
1301 if (ic
->ic_sta_assoc
!= ic
->ic_ht_sta_assoc
) {
1302 protmode
= IEEE80211_HTINFO_OPMODE_MIXED
1303 | IEEE80211_HTINFO_NONHT_PRESENT
;
1304 } else if (ic
->ic_flags_ht
& IEEE80211_FHT_NONHT_PR
) {
1305 protmode
= IEEE80211_HTINFO_OPMODE_PROTOPT
1306 | IEEE80211_HTINFO_NONHT_PRESENT
;
1307 } else if (ic
->ic_bsschan
!= IEEE80211_CHAN_ANYC
&&
1308 IEEE80211_IS_CHAN_HT40(ic
->ic_bsschan
) &&
1309 ic
->ic_sta_assoc
!= ic
->ic_ht40_sta_assoc
) {
1310 protmode
= IEEE80211_HTINFO_OPMODE_HT20PR
;
1312 protmode
= IEEE80211_HTINFO_OPMODE_PURE
;
1314 if (protmode
!= ic
->ic_curhtprotmode
) {
1315 ic
->ic_curhtprotmode
= protmode
;
1321 * Handle an HT station joining a BSS.
1324 ieee80211_ht_node_join(struct ieee80211_node
*ni
)
1326 struct ieee80211com
*ic
= ni
->ni_ic
;
1328 IEEE80211_LOCK_ASSERT(ic
);
1330 if (ni
->ni_flags
& IEEE80211_NODE_HT
) {
1331 ic
->ic_ht_sta_assoc
++;
1332 if (ni
->ni_chw
== 40)
1333 ic
->ic_ht40_sta_assoc
++;
1339 * Handle an HT station leaving a BSS.
1342 ieee80211_ht_node_leave(struct ieee80211_node
*ni
)
1344 struct ieee80211com
*ic
= ni
->ni_ic
;
1346 IEEE80211_LOCK_ASSERT(ic
);
1348 if (ni
->ni_flags
& IEEE80211_NODE_HT
) {
1349 ic
->ic_ht_sta_assoc
--;
1350 if (ni
->ni_chw
== 40)
1351 ic
->ic_ht40_sta_assoc
--;
1357 * Public version of htinfo_update; used for processing
1358 * beacon frames from overlapping bss.
1360 * Caller can specify either IEEE80211_HTINFO_OPMODE_MIXED
1361 * (on receipt of a beacon that advertises MIXED) or
1362 * IEEE80211_HTINFO_OPMODE_PROTOPT (on receipt of a beacon
1363 * from an overlapping legacy bss). We treat MIXED with
1364 * a higher precedence than PROTOPT (i.e. we will not change
1365 * change PROTOPT -> MIXED; only MIXED -> PROTOPT). This
1366 * corresponds to how we handle things in htinfo_update.
1369 ieee80211_htprot_update(struct ieee80211com
*ic
, int protmode
)
1371 #define OPMODE(x) SM(x, IEEE80211_HTINFO_OPMODE)
1374 /* track non-HT station presence */
1375 KASSERT(protmode
& IEEE80211_HTINFO_NONHT_PRESENT
,
1376 ("protmode 0x%x", protmode
));
1377 ic
->ic_flags_ht
|= IEEE80211_FHT_NONHT_PR
;
1378 ic
->ic_lastnonht
= ticks
;
1380 if (protmode
!= ic
->ic_curhtprotmode
&&
1381 (OPMODE(ic
->ic_curhtprotmode
) != IEEE80211_HTINFO_OPMODE_MIXED
||
1382 OPMODE(protmode
) == IEEE80211_HTINFO_OPMODE_PROTOPT
)) {
1383 /* push beacon update */
1384 ic
->ic_curhtprotmode
= protmode
;
1387 IEEE80211_UNLOCK(ic
);
1392 * Time out presence of an overlapping bss with non-HT
1393 * stations. When operating in hostap mode we listen for
1394 * beacons from other stations and if we identify a non-HT
1395 * station is present we update the opmode field of the
1396 * HTINFO ie. To identify when all non-HT stations are
1397 * gone we time out this condition.
1400 ieee80211_ht_timeout(struct ieee80211com
*ic
)
1402 IEEE80211_LOCK_ASSERT(ic
);
1404 if ((ic
->ic_flags_ht
& IEEE80211_FHT_NONHT_PR
) &&
1405 ieee80211_time_after(ticks
, ic
->ic_lastnonht
+ IEEE80211_NONHT_PRESENT_AGE
)) {
1407 IEEE80211_NOTE(vap
, IEEE80211_MSG_11N
, ni
,
1408 "%s", "time out non-HT STA present on channel");
1410 ic
->ic_flags_ht
&= ~IEEE80211_FHT_NONHT_PR
;
1416 * Process an 802.11n HT capabilities ie.
1419 ieee80211_parse_htcap(struct ieee80211_node
*ni
, const uint8_t *ie
)
1421 if (ie
[0] == IEEE80211_ELEMID_VENDOR
) {
1423 * Station used Vendor OUI ie to associate;
1424 * mark the node so when we respond we'll use
1425 * the Vendor OUI's and not the standard ie's.
1427 ni
->ni_flags
|= IEEE80211_NODE_HTCOMPAT
;
1430 ni
->ni_flags
&= ~IEEE80211_NODE_HTCOMPAT
;
1432 ni
->ni_htcap
= le16dec(ie
+
1433 __offsetof(struct ieee80211_ie_htcap
, hc_cap
));
1434 ni
->ni_htparam
= ie
[__offsetof(struct ieee80211_ie_htcap
, hc_param
)];
1438 htinfo_parse(struct ieee80211_node
*ni
,
1439 const struct ieee80211_ie_htinfo
*htinfo
)
1443 ni
->ni_htctlchan
= htinfo
->hi_ctrlchannel
;
1444 ni
->ni_ht2ndchan
= SM(htinfo
->hi_byte1
, IEEE80211_HTINFO_2NDCHAN
);
1445 w
= le16dec(&htinfo
->hi_byte2
);
1446 ni
->ni_htopmode
= SM(w
, IEEE80211_HTINFO_OPMODE
);
1447 w
= le16dec(&htinfo
->hi_byte45
);
1448 ni
->ni_htstbc
= SM(w
, IEEE80211_HTINFO_BASIC_STBCMCS
);
1452 * Parse an 802.11n HT info ie and save useful information
1453 * to the node state. Note this does not effect any state
1454 * changes such as for channel width change.
1457 ieee80211_parse_htinfo(struct ieee80211_node
*ni
, const uint8_t *ie
)
1459 if (ie
[0] == IEEE80211_ELEMID_VENDOR
)
1461 htinfo_parse(ni
, (const struct ieee80211_ie_htinfo
*) ie
);
1465 * Handle 11n channel switch. Use the received HT ie's to
1466 * identify the right channel to use. If we cannot locate it
1467 * in the channel table then fallback to legacy operation.
1468 * Note that we use this information to identify the node's
1469 * channel only; the caller is responsible for insuring any
1470 * required channel change is done (e.g. in sta mode when
1471 * parsing the contents of a beacon frame).
1474 htinfo_update_chw(struct ieee80211_node
*ni
, int htflags
)
1476 struct ieee80211com
*ic
= ni
->ni_ic
;
1477 struct ieee80211_channel
*c
;
1481 chanflags
= (ni
->ni_chan
->ic_flags
&~ IEEE80211_CHAN_HT
) | htflags
;
1482 if (chanflags
!= ni
->ni_chan
->ic_flags
) {
1483 /* XXX not right for ht40- */
1484 c
= ieee80211_find_channel(ic
, ni
->ni_chan
->ic_freq
, chanflags
);
1485 if (c
== NULL
&& (htflags
& IEEE80211_CHAN_HT40
)) {
1487 * No HT40 channel entry in our table; fall back
1488 * to HT20 operation. This should not happen.
1490 c
= findhtchan(ic
, ni
->ni_chan
, IEEE80211_CHAN_HT20
);
1492 IEEE80211_NOTE(ni
->ni_vap
,
1493 IEEE80211_MSG_ASSOC
| IEEE80211_MSG_11N
, ni
,
1494 "no HT40 channel (freq %u), falling back to HT20",
1495 ni
->ni_chan
->ic_freq
);
1499 if (c
!= NULL
&& c
!= ni
->ni_chan
) {
1500 IEEE80211_NOTE(ni
->ni_vap
,
1501 IEEE80211_MSG_ASSOC
| IEEE80211_MSG_11N
, ni
,
1502 "switch station to HT%d channel %u/0x%x",
1503 IEEE80211_IS_CHAN_HT40(c
) ? 40 : 20,
1504 c
->ic_freq
, c
->ic_flags
);
1508 /* NB: caller responsible for forcing any channel change */
1510 /* update node's tx channel width */
1511 ni
->ni_chw
= IEEE80211_IS_CHAN_HT40(ni
->ni_chan
)? 40 : 20;
1516 * Update 11n MIMO PS state according to received htcap.
1519 htcap_update_mimo_ps(struct ieee80211_node
*ni
)
1521 uint16_t oflags
= ni
->ni_flags
;
1523 switch (ni
->ni_htcap
& IEEE80211_HTCAP_SMPS
) {
1524 case IEEE80211_HTCAP_SMPS_DYNAMIC
:
1525 ni
->ni_flags
|= IEEE80211_NODE_MIMO_PS
;
1526 ni
->ni_flags
|= IEEE80211_NODE_MIMO_RTS
;
1528 case IEEE80211_HTCAP_SMPS_ENA
:
1529 ni
->ni_flags
|= IEEE80211_NODE_MIMO_PS
;
1530 ni
->ni_flags
&= ~IEEE80211_NODE_MIMO_RTS
;
1532 case IEEE80211_HTCAP_SMPS_OFF
:
1533 default: /* disable on rx of reserved value */
1534 ni
->ni_flags
&= ~IEEE80211_NODE_MIMO_PS
;
1535 ni
->ni_flags
&= ~IEEE80211_NODE_MIMO_RTS
;
1538 return (oflags
^ ni
->ni_flags
);
1542 * Update short GI state according to received htcap
1543 * and local settings.
1545 static __inline
void
1546 htcap_update_shortgi(struct ieee80211_node
*ni
)
1548 struct ieee80211vap
*vap
= ni
->ni_vap
;
1550 ni
->ni_flags
&= ~(IEEE80211_NODE_SGI20
|IEEE80211_NODE_SGI40
);
1551 if ((ni
->ni_htcap
& IEEE80211_HTCAP_SHORTGI20
) &&
1552 (vap
->iv_flags_ht
& IEEE80211_FHT_SHORTGI20
))
1553 ni
->ni_flags
|= IEEE80211_NODE_SGI20
;
1554 if ((ni
->ni_htcap
& IEEE80211_HTCAP_SHORTGI40
) &&
1555 (vap
->iv_flags_ht
& IEEE80211_FHT_SHORTGI40
))
1556 ni
->ni_flags
|= IEEE80211_NODE_SGI40
;
1560 * Parse and update HT-related state extracted from
1561 * the HT cap and info ie's.
1564 ieee80211_ht_updateparams(struct ieee80211_node
*ni
,
1565 const uint8_t *htcapie
, const uint8_t *htinfoie
)
1567 struct ieee80211vap
*vap
= ni
->ni_vap
;
1568 const struct ieee80211_ie_htinfo
*htinfo
;
1572 ieee80211_parse_htcap(ni
, htcapie
);
1573 if (vap
->iv_htcaps
& IEEE80211_HTCAP_SMPS
)
1574 htcap_update_mimo_ps(ni
);
1575 htcap_update_shortgi(ni
);
1577 if (htinfoie
[0] == IEEE80211_ELEMID_VENDOR
)
1579 htinfo
= (const struct ieee80211_ie_htinfo
*) htinfoie
;
1580 htinfo_parse(ni
, htinfo
);
1582 htflags
= (vap
->iv_flags_ht
& IEEE80211_FHT_HT
) ?
1583 IEEE80211_CHAN_HT20
: 0;
1584 /* NB: honor operating mode constraint */
1585 if ((htinfo
->hi_byte1
& IEEE80211_HTINFO_TXWIDTH_2040
) &&
1586 (vap
->iv_flags_ht
& IEEE80211_FHT_USEHT40
)) {
1587 if (ni
->ni_ht2ndchan
== IEEE80211_HTINFO_2NDCHAN_ABOVE
)
1588 htflags
= IEEE80211_CHAN_HT40U
;
1589 else if (ni
->ni_ht2ndchan
== IEEE80211_HTINFO_2NDCHAN_BELOW
)
1590 htflags
= IEEE80211_CHAN_HT40D
;
1592 if (htinfo_update_chw(ni
, htflags
))
1595 if ((htinfo
->hi_byte1
& IEEE80211_HTINFO_RIFSMODE_PERM
) &&
1596 (vap
->iv_flags_ht
& IEEE80211_FHT_RIFS
))
1597 ni
->ni_flags
|= IEEE80211_NODE_RIFS
;
1599 ni
->ni_flags
&= ~IEEE80211_NODE_RIFS
;
1605 * Parse and update HT-related state extracted from the HT cap ie
1606 * for a station joining an HT BSS.
1609 ieee80211_ht_updatehtcap(struct ieee80211_node
*ni
, const uint8_t *htcapie
)
1611 struct ieee80211vap
*vap
= ni
->ni_vap
;
1614 ieee80211_parse_htcap(ni
, htcapie
);
1615 if (vap
->iv_htcaps
& IEEE80211_HTCAP_SMPS
)
1616 htcap_update_mimo_ps(ni
);
1617 htcap_update_shortgi(ni
);
1619 /* NB: honor operating mode constraint */
1620 /* XXX 40 MHz intolerant */
1621 htflags
= (vap
->iv_flags_ht
& IEEE80211_FHT_HT
) ?
1622 IEEE80211_CHAN_HT20
: 0;
1623 if ((ni
->ni_htcap
& IEEE80211_HTCAP_CHWIDTH40
) &&
1624 (vap
->iv_flags_ht
& IEEE80211_FHT_USEHT40
)) {
1625 if (IEEE80211_IS_CHAN_HT40U(vap
->iv_bss
->ni_chan
))
1626 htflags
= IEEE80211_CHAN_HT40U
;
1627 else if (IEEE80211_IS_CHAN_HT40D(vap
->iv_bss
->ni_chan
))
1628 htflags
= IEEE80211_CHAN_HT40D
;
1630 (void) htinfo_update_chw(ni
, htflags
);
1634 * Install received HT rate set by parsing the HT cap ie.
1637 ieee80211_setup_htrates(struct ieee80211_node
*ni
, const uint8_t *ie
, int flags
)
1639 struct ieee80211com
*ic
= ni
->ni_ic
;
1640 struct ieee80211vap
*vap
= ni
->ni_vap
;
1641 const struct ieee80211_ie_htcap
*htcap
;
1642 struct ieee80211_htrateset
*rs
;
1643 int i
, maxequalmcs
, maxunequalmcs
;
1645 maxequalmcs
= ic
->ic_txstream
* 8 - 1;
1646 if (ic
->ic_htcaps
& IEEE80211_HTC_TXUNEQUAL
) {
1647 if (ic
->ic_txstream
>= 2)
1649 if (ic
->ic_txstream
>= 3)
1651 if (ic
->ic_txstream
>= 4)
1656 rs
= &ni
->ni_htrates
;
1657 memset(rs
, 0, sizeof(*rs
));
1659 if (ie
[0] == IEEE80211_ELEMID_VENDOR
)
1661 htcap
= (const struct ieee80211_ie_htcap
*) ie
;
1662 for (i
= 0; i
< IEEE80211_HTRATE_MAXSIZE
; i
++) {
1663 if (isclr(htcap
->hc_mcsset
, i
))
1665 if (rs
->rs_nrates
== IEEE80211_HTRATE_MAXSIZE
) {
1667 IEEE80211_MSG_XRATE
| IEEE80211_MSG_11N
, ni
,
1668 "WARNING, HT rate set too large; only "
1669 "using %u rates", IEEE80211_HTRATE_MAXSIZE
);
1670 vap
->iv_stats
.is_rx_rstoobig
++;
1673 if (i
<= 31 && i
> maxequalmcs
)
1676 (ic
->ic_htcaps
& IEEE80211_HTC_TXMCS32
) == 0)
1678 if (i
> 32 && i
> maxunequalmcs
)
1680 rs
->rs_rates
[rs
->rs_nrates
++] = i
;
1683 return ieee80211_fix_rate(ni
, (struct ieee80211_rateset
*) rs
, flags
);
1687 * Mark rates in a node's HT rate set as basic according
1688 * to the information in the supplied HT info ie.
1691 ieee80211_setup_basic_htrates(struct ieee80211_node
*ni
, const uint8_t *ie
)
1693 const struct ieee80211_ie_htinfo
*htinfo
;
1694 struct ieee80211_htrateset
*rs
;
1697 if (ie
[0] == IEEE80211_ELEMID_VENDOR
)
1699 htinfo
= (const struct ieee80211_ie_htinfo
*) ie
;
1700 rs
= &ni
->ni_htrates
;
1701 if (rs
->rs_nrates
== 0) {
1702 IEEE80211_NOTE(ni
->ni_vap
,
1703 IEEE80211_MSG_XRATE
| IEEE80211_MSG_11N
, ni
,
1704 "%s", "WARNING, empty HT rate set");
1707 for (i
= 0; i
< IEEE80211_HTRATE_MAXSIZE
; i
++) {
1708 if (isclr(htinfo
->hi_basicmcsset
, i
))
1710 for (j
= 0; j
< rs
->rs_nrates
; j
++)
1711 if ((rs
->rs_rates
[j
] & IEEE80211_RATE_VAL
) == i
)
1712 rs
->rs_rates
[j
] |= IEEE80211_RATE_BASIC
;
1717 ampdu_tx_setup(struct ieee80211_tx_ampdu
*tap
)
1719 #if defined(__DragonFly__)
1720 callout_init_mp(&tap
->txa_timer
);
1722 callout_init(&tap
->txa_timer
, 1);
1724 tap
->txa_flags
|= IEEE80211_AGGR_SETUP
;
1725 tap
->txa_lastsample
= ticks
;
1729 ampdu_tx_stop(struct ieee80211_tx_ampdu
*tap
)
1731 struct ieee80211_node
*ni
= tap
->txa_ni
;
1732 struct ieee80211com
*ic
= ni
->ni_ic
;
1734 IEEE80211_NOTE(tap
->txa_ni
->ni_vap
, IEEE80211_MSG_11N
,
1739 KASSERT(tap
->txa_flags
& IEEE80211_AGGR_SETUP
,
1740 ("txa_flags 0x%x tid %d ac %d", tap
->txa_flags
, tap
->txa_tid
,
1741 TID_TO_WME_AC(tap
->txa_tid
)));
1744 * Stop BA stream if setup so driver has a chance
1745 * to reclaim any resources it might have allocated.
1747 ic
->ic_addba_stop(ni
, tap
);
1749 * Stop any pending BAR transmit.
1751 bar_stop_timer(tap
);
1754 * Reset packet estimate.
1756 ieee80211_txampdu_init_pps(tap
);
1758 /* NB: clearing NAK means we may re-send ADDBA */
1759 tap
->txa_flags
&= ~(IEEE80211_AGGR_SETUP
| IEEE80211_AGGR_NAK
);
1763 * ADDBA response timeout.
1765 * If software aggregation and per-TID queue management was done here,
1766 * that queue would be unpaused after the ADDBA timeout occurs.
1769 addba_timeout(void *arg
)
1771 struct ieee80211_tx_ampdu
*tap
= arg
;
1772 struct ieee80211_node
*ni
= tap
->txa_ni
;
1773 struct ieee80211com
*ic
= ni
->ni_ic
;
1776 tap
->txa_flags
&= ~IEEE80211_AGGR_XCHGPEND
;
1777 tap
->txa_attempts
++;
1778 ic
->ic_addba_response_timeout(ni
, tap
);
1782 addba_start_timeout(struct ieee80211_tx_ampdu
*tap
)
1784 /* XXX use CALLOUT_PENDING instead? */
1785 callout_reset(&tap
->txa_timer
, ieee80211_addba_timeout
,
1786 addba_timeout
, tap
);
1787 tap
->txa_flags
|= IEEE80211_AGGR_XCHGPEND
;
1788 tap
->txa_nextrequest
= ticks
+ ieee80211_addba_timeout
;
1792 addba_stop_timeout(struct ieee80211_tx_ampdu
*tap
)
1794 /* XXX use CALLOUT_PENDING instead? */
1795 if (tap
->txa_flags
& IEEE80211_AGGR_XCHGPEND
) {
1796 callout_stop(&tap
->txa_timer
);
1797 tap
->txa_flags
&= ~IEEE80211_AGGR_XCHGPEND
;
1802 null_addba_response_timeout(struct ieee80211_node
*ni
,
1803 struct ieee80211_tx_ampdu
*tap
)
1808 * Default method for requesting A-MPDU tx aggregation.
1809 * We setup the specified state block and start a timer
1810 * to wait for an ADDBA response frame.
1813 ieee80211_addba_request(struct ieee80211_node
*ni
,
1814 struct ieee80211_tx_ampdu
*tap
,
1815 int dialogtoken
, int baparamset
, int batimeout
)
1820 tap
->txa_token
= dialogtoken
;
1821 tap
->txa_flags
|= IEEE80211_AGGR_IMMEDIATE
;
1822 bufsiz
= MS(baparamset
, IEEE80211_BAPS_BUFSIZ
);
1823 tap
->txa_wnd
= (bufsiz
== 0) ?
1824 IEEE80211_AGGR_BAWMAX
: min(bufsiz
, IEEE80211_AGGR_BAWMAX
);
1825 addba_start_timeout(tap
);
1830 * Called by drivers that wish to request an ADDBA session be
1831 * setup. This brings it up and starts the request timer.
1834 ieee80211_ampdu_tx_request_ext(struct ieee80211_node
*ni
, int tid
)
1836 struct ieee80211_tx_ampdu
*tap
;
1838 if (tid
< 0 || tid
> 15)
1840 tap
= &ni
->ni_tx_ampdu
[tid
];
1843 if ((tap
->txa_flags
& IEEE80211_AGGR_SETUP
) == 0) {
1844 /* do deferred setup of state */
1845 ampdu_tx_setup(tap
);
1847 /* XXX hack for not doing proper locking */
1848 tap
->txa_flags
&= ~IEEE80211_AGGR_NAK
;
1849 addba_start_timeout(tap
);
1854 * Called by drivers that have marked a session as active.
1857 ieee80211_ampdu_tx_request_active_ext(struct ieee80211_node
*ni
, int tid
,
1860 struct ieee80211_tx_ampdu
*tap
;
1862 if (tid
< 0 || tid
> 15)
1864 tap
= &ni
->ni_tx_ampdu
[tid
];
1867 addba_stop_timeout(tap
);
1869 tap
->txa_flags
|= IEEE80211_AGGR_RUNNING
;
1870 tap
->txa_attempts
= 0;
1872 /* mark tid so we don't try again */
1873 tap
->txa_flags
|= IEEE80211_AGGR_NAK
;
1879 * Default method for processing an A-MPDU tx aggregation
1880 * response. We shutdown any pending timer and update the
1881 * state block according to the reply.
1884 ieee80211_addba_response(struct ieee80211_node
*ni
,
1885 struct ieee80211_tx_ampdu
*tap
,
1886 int status
, int baparamset
, int batimeout
)
1891 addba_stop_timeout(tap
);
1892 if (status
== IEEE80211_STATUS_SUCCESS
) {
1893 bufsiz
= MS(baparamset
, IEEE80211_BAPS_BUFSIZ
);
1894 /* XXX override our request? */
1895 tap
->txa_wnd
= (bufsiz
== 0) ?
1896 IEEE80211_AGGR_BAWMAX
: min(bufsiz
, IEEE80211_AGGR_BAWMAX
);
1898 tid
= MS(baparamset
, IEEE80211_BAPS_TID
);
1899 tap
->txa_flags
|= IEEE80211_AGGR_RUNNING
;
1900 tap
->txa_attempts
= 0;
1902 /* mark tid so we don't try again */
1903 tap
->txa_flags
|= IEEE80211_AGGR_NAK
;
1909 * Default method for stopping A-MPDU tx aggregation.
1910 * Any timer is cleared and we drain any pending frames.
1913 ieee80211_addba_stop(struct ieee80211_node
*ni
, struct ieee80211_tx_ampdu
*tap
)
1916 addba_stop_timeout(tap
);
1917 if (tap
->txa_flags
& IEEE80211_AGGR_RUNNING
) {
1918 /* XXX clear aggregation queue */
1919 tap
->txa_flags
&= ~IEEE80211_AGGR_RUNNING
;
1921 tap
->txa_attempts
= 0;
1925 * Process a received action frame using the default aggregation
1926 * policy. We intercept ADDBA-related frames and use them to
1927 * update our aggregation state. All other frames are passed up
1928 * for processing by ieee80211_recv_action.
1931 ht_recv_action_ba_addba_request(struct ieee80211_node
*ni
,
1932 const struct ieee80211_frame
*wh
,
1933 const uint8_t *frm
, const uint8_t *efrm
)
1935 struct ieee80211com
*ic
= ni
->ni_ic
;
1936 struct ieee80211vap
*vap
= ni
->ni_vap
;
1937 struct ieee80211_rx_ampdu
*rap
;
1938 uint8_t dialogtoken
;
1939 uint16_t baparamset
, batimeout
, baseqctl
;
1943 dialogtoken
= frm
[2];
1944 baparamset
= le16dec(frm
+3);
1945 batimeout
= le16dec(frm
+5);
1946 baseqctl
= le16dec(frm
+7);
1948 tid
= MS(baparamset
, IEEE80211_BAPS_TID
);
1950 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
1951 "recv ADDBA request: dialogtoken %u baparamset 0x%x "
1952 "(tid %d bufsiz %d) batimeout %d baseqctl %d:%d",
1953 dialogtoken
, baparamset
,
1954 tid
, MS(baparamset
, IEEE80211_BAPS_BUFSIZ
),
1956 MS(baseqctl
, IEEE80211_BASEQ_START
),
1957 MS(baseqctl
, IEEE80211_BASEQ_FRAG
));
1959 rap
= &ni
->ni_rx_ampdu
[tid
];
1961 /* Send ADDBA response */
1962 args
[0] = dialogtoken
;
1964 * NB: We ack only if the sta associated with HT and
1965 * the ap is configured to do AMPDU rx (the latter
1966 * violates the 11n spec and is mostly for testing).
1968 if ((ni
->ni_flags
& IEEE80211_NODE_AMPDU_RX
) &&
1969 (vap
->iv_flags_ht
& IEEE80211_FHT_AMPDU_RX
)) {
1970 /* XXX handle ampdu_rx_start failure */
1971 ic
->ic_ampdu_rx_start(ni
, rap
,
1972 baparamset
, batimeout
, baseqctl
);
1974 args
[1] = IEEE80211_STATUS_SUCCESS
;
1976 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
,
1977 ni
, "reject ADDBA request: %s",
1978 ni
->ni_flags
& IEEE80211_NODE_AMPDU_RX
?
1979 "administratively disabled" :
1980 "not negotiated for station");
1981 vap
->iv_stats
.is_addba_reject
++;
1982 args
[1] = IEEE80211_STATUS_UNSPECIFIED
;
1984 /* XXX honor rap flags? */
1985 args
[2] = IEEE80211_BAPS_POLICY_IMMEDIATE
1986 | SM(tid
, IEEE80211_BAPS_TID
)
1987 | SM(rap
->rxa_wnd
, IEEE80211_BAPS_BUFSIZ
)
1991 ic
->ic_send_action(ni
, IEEE80211_ACTION_CAT_BA
,
1992 IEEE80211_ACTION_BA_ADDBA_RESPONSE
, args
);
1997 ht_recv_action_ba_addba_response(struct ieee80211_node
*ni
,
1998 const struct ieee80211_frame
*wh
,
1999 const uint8_t *frm
, const uint8_t *efrm
)
2001 struct ieee80211com
*ic
= ni
->ni_ic
;
2002 struct ieee80211vap
*vap
= ni
->ni_vap
;
2003 struct ieee80211_tx_ampdu
*tap
;
2004 uint8_t dialogtoken
, policy
;
2005 uint16_t baparamset
, batimeout
, code
;
2008 dialogtoken
= frm
[2];
2009 code
= le16dec(frm
+3);
2010 baparamset
= le16dec(frm
+5);
2011 tid
= MS(baparamset
, IEEE80211_BAPS_TID
);
2012 bufsiz
= MS(baparamset
, IEEE80211_BAPS_BUFSIZ
);
2013 policy
= MS(baparamset
, IEEE80211_BAPS_POLICY
);
2014 batimeout
= le16dec(frm
+7);
2016 tap
= &ni
->ni_tx_ampdu
[tid
];
2017 if ((tap
->txa_flags
& IEEE80211_AGGR_XCHGPEND
) == 0) {
2018 IEEE80211_DISCARD_MAC(vap
,
2019 IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
,
2020 ni
->ni_macaddr
, "ADDBA response",
2021 "no pending ADDBA, tid %d dialogtoken %u "
2022 "code %d", tid
, dialogtoken
, code
);
2023 vap
->iv_stats
.is_addba_norequest
++;
2026 if (dialogtoken
!= tap
->txa_token
) {
2027 IEEE80211_DISCARD_MAC(vap
,
2028 IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
,
2029 ni
->ni_macaddr
, "ADDBA response",
2030 "dialogtoken mismatch: waiting for %d, "
2031 "received %d, tid %d code %d",
2032 tap
->txa_token
, dialogtoken
, tid
, code
);
2033 vap
->iv_stats
.is_addba_badtoken
++;
2036 /* NB: assumes IEEE80211_AGGR_IMMEDIATE is 1 */
2037 if (policy
!= (tap
->txa_flags
& IEEE80211_AGGR_IMMEDIATE
)) {
2038 IEEE80211_DISCARD_MAC(vap
,
2039 IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
,
2040 ni
->ni_macaddr
, "ADDBA response",
2041 "policy mismatch: expecting %d, "
2042 "received %d, tid %d code %d",
2043 tap
->txa_flags
& IEEE80211_AGGR_IMMEDIATE
,
2045 vap
->iv_stats
.is_addba_badpolicy
++;
2049 /* XXX we take MIN in ieee80211_addba_response */
2050 if (bufsiz
> IEEE80211_AGGR_BAWMAX
) {
2051 IEEE80211_DISCARD_MAC(vap
,
2052 IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
,
2053 ni
->ni_macaddr
, "ADDBA response",
2054 "BA window too large: max %d, "
2055 "received %d, tid %d code %d",
2056 bufsiz
, IEEE80211_AGGR_BAWMAX
, tid
, code
);
2057 vap
->iv_stats
.is_addba_badbawinsize
++;
2061 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
2062 "recv ADDBA response: dialogtoken %u code %d "
2063 "baparamset 0x%x (tid %d bufsiz %d) batimeout %d",
2064 dialogtoken
, code
, baparamset
, tid
, bufsiz
,
2066 ic
->ic_addba_response(ni
, tap
, code
, baparamset
, batimeout
);
2071 ht_recv_action_ba_delba(struct ieee80211_node
*ni
,
2072 const struct ieee80211_frame
*wh
,
2073 const uint8_t *frm
, const uint8_t *efrm
)
2075 struct ieee80211com
*ic
= ni
->ni_ic
;
2076 struct ieee80211_rx_ampdu
*rap
;
2077 struct ieee80211_tx_ampdu
*tap
;
2078 uint16_t baparamset
, code
;
2081 baparamset
= le16dec(frm
+2);
2082 code
= le16dec(frm
+4);
2084 tid
= MS(baparamset
, IEEE80211_DELBAPS_TID
);
2086 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
2087 "recv DELBA: baparamset 0x%x (tid %d initiator %d) "
2088 "code %d", baparamset
, tid
,
2089 MS(baparamset
, IEEE80211_DELBAPS_INIT
), code
);
2091 if ((baparamset
& IEEE80211_DELBAPS_INIT
) == 0) {
2092 tap
= &ni
->ni_tx_ampdu
[tid
];
2093 ic
->ic_addba_stop(ni
, tap
);
2095 rap
= &ni
->ni_rx_ampdu
[tid
];
2096 ic
->ic_ampdu_rx_stop(ni
, rap
);
2102 ht_recv_action_ht_txchwidth(struct ieee80211_node
*ni
,
2103 const struct ieee80211_frame
*wh
,
2104 const uint8_t *frm
, const uint8_t *efrm
)
2108 chw
= (frm
[2] == IEEE80211_A_HT_TXCHWIDTH_2040
) ? 40 : 20;
2110 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
2111 "%s: HT txchwidth, width %d%s",
2112 __func__
, chw
, ni
->ni_chw
!= chw
? "*" : "");
2113 if (chw
!= ni
->ni_chw
) {
2115 /* XXX notify on change */
2121 ht_recv_action_ht_mimopwrsave(struct ieee80211_node
*ni
,
2122 const struct ieee80211_frame
*wh
,
2123 const uint8_t *frm
, const uint8_t *efrm
)
2125 const struct ieee80211_action_ht_mimopowersave
*mps
=
2126 (const struct ieee80211_action_ht_mimopowersave
*) frm
;
2128 /* XXX check iv_htcaps */
2129 if (mps
->am_control
& IEEE80211_A_HT_MIMOPWRSAVE_ENA
)
2130 ni
->ni_flags
|= IEEE80211_NODE_MIMO_PS
;
2132 ni
->ni_flags
&= ~IEEE80211_NODE_MIMO_PS
;
2133 if (mps
->am_control
& IEEE80211_A_HT_MIMOPWRSAVE_MODE
)
2134 ni
->ni_flags
|= IEEE80211_NODE_MIMO_RTS
;
2136 ni
->ni_flags
&= ~IEEE80211_NODE_MIMO_RTS
;
2137 /* XXX notify on change */
2138 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
2139 "%s: HT MIMO PS (%s%s)", __func__
,
2140 (ni
->ni_flags
& IEEE80211_NODE_MIMO_PS
) ? "on" : "off",
2141 (ni
->ni_flags
& IEEE80211_NODE_MIMO_RTS
) ? "+rts" : ""
2147 * Transmit processing.
2151 * Check if A-MPDU should be requested/enabled for a stream.
2152 * We require a traffic rate above a per-AC threshold and we
2153 * also handle backoff from previous failed attempts.
2155 * Drivers may override this method to bring in information
2156 * such as link state conditions in making the decision.
2159 ieee80211_ampdu_enable(struct ieee80211_node
*ni
,
2160 struct ieee80211_tx_ampdu
*tap
)
2162 struct ieee80211vap
*vap
= ni
->ni_vap
;
2164 if (tap
->txa_avgpps
<
2165 vap
->iv_ampdu_mintraffic
[TID_TO_WME_AC(tap
->txa_tid
)])
2167 /* XXX check rssi? */
2168 if (tap
->txa_attempts
>= ieee80211_addba_maxtries
&&
2169 ieee80211_time_after(ticks
, tap
->txa_nextrequest
)) {
2171 * Don't retry too often; txa_nextrequest is set
2172 * to the minimum interval we'll retry after
2173 * ieee80211_addba_maxtries failed attempts are made.
2177 IEEE80211_NOTE(vap
, IEEE80211_MSG_11N
, ni
,
2178 "enable AMPDU on tid %d (%s), avgpps %d pkts %d attempt %d",
2179 tap
->txa_tid
, ieee80211_wme_acnames
[TID_TO_WME_AC(tap
->txa_tid
)],
2180 tap
->txa_avgpps
, tap
->txa_pkts
, tap
->txa_attempts
);
2185 * Request A-MPDU tx aggregation. Setup local state and
2186 * issue an ADDBA request. BA use will only happen after
2187 * the other end replies with ADDBA response.
2190 ieee80211_ampdu_request(struct ieee80211_node
*ni
,
2191 struct ieee80211_tx_ampdu
*tap
)
2193 struct ieee80211com
*ic
= ni
->ni_ic
;
2195 int tid
, dialogtoken
;
2196 static int tokens
= 0; /* XXX */
2199 if ((tap
->txa_flags
& IEEE80211_AGGR_SETUP
) == 0) {
2200 /* do deferred setup of state */
2201 ampdu_tx_setup(tap
);
2203 /* XXX hack for not doing proper locking */
2204 tap
->txa_flags
&= ~IEEE80211_AGGR_NAK
;
2206 dialogtoken
= (tokens
+1) % 63; /* XXX */
2208 tap
->txa_start
= ni
->ni_txseqs
[tid
];
2210 args
[0] = dialogtoken
;
2211 args
[1] = 0; /* NB: status code not used */
2212 args
[2] = IEEE80211_BAPS_POLICY_IMMEDIATE
2213 | SM(tid
, IEEE80211_BAPS_TID
)
2214 | SM(IEEE80211_AGGR_BAWMAX
, IEEE80211_BAPS_BUFSIZ
)
2216 args
[3] = 0; /* batimeout */
2217 /* NB: do first so there's no race against reply */
2218 if (!ic
->ic_addba_request(ni
, tap
, dialogtoken
, args
[2], args
[3])) {
2219 /* unable to setup state, don't make request */
2220 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
2221 ni
, "%s: could not setup BA stream for TID %d AC %d",
2222 __func__
, tap
->txa_tid
, TID_TO_WME_AC(tap
->txa_tid
));
2223 /* defer next try so we don't slam the driver with requests */
2224 tap
->txa_attempts
= ieee80211_addba_maxtries
;
2225 /* NB: check in case driver wants to override */
2226 if (tap
->txa_nextrequest
<= ticks
)
2227 tap
->txa_nextrequest
= ticks
+ ieee80211_addba_backoff
;
2230 tokens
= dialogtoken
; /* allocate token */
2231 /* NB: after calling ic_addba_request so driver can set txa_start */
2232 args
[4] = SM(tap
->txa_start
, IEEE80211_BASEQ_START
)
2233 | SM(0, IEEE80211_BASEQ_FRAG
)
2235 return ic
->ic_send_action(ni
, IEEE80211_ACTION_CAT_BA
,
2236 IEEE80211_ACTION_BA_ADDBA_REQUEST
, args
);
2240 * Terminate an AMPDU tx stream. State is reclaimed
2241 * and the peer notified with a DelBA Action frame.
2244 ieee80211_ampdu_stop(struct ieee80211_node
*ni
, struct ieee80211_tx_ampdu
*tap
,
2247 struct ieee80211com
*ic
= ni
->ni_ic
;
2248 struct ieee80211vap
*vap
= ni
->ni_vap
;
2252 tap
->txa_flags
&= ~IEEE80211_AGGR_BARPEND
;
2253 if (IEEE80211_AMPDU_RUNNING(tap
)) {
2254 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
,
2255 ni
, "%s: stop BA stream for TID %d (reason: %d (%s))",
2256 __func__
, tap
->txa_tid
, reason
,
2257 ieee80211_reason_to_string(reason
));
2258 vap
->iv_stats
.is_ampdu_stop
++;
2260 ic
->ic_addba_stop(ni
, tap
);
2261 args
[0] = tap
->txa_tid
;
2262 args
[1] = IEEE80211_DELBAPS_INIT
;
2263 args
[2] = reason
; /* XXX reason code */
2264 ic
->ic_send_action(ni
, IEEE80211_ACTION_CAT_BA
,
2265 IEEE80211_ACTION_BA_DELBA
, args
);
2267 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
,
2268 ni
, "%s: BA stream for TID %d not running "
2269 "(reason: %d (%s))", __func__
, tap
->txa_tid
, reason
,
2270 ieee80211_reason_to_string(reason
));
2271 vap
->iv_stats
.is_ampdu_stop_failed
++;
2276 static void bar_start_timer(struct ieee80211_tx_ampdu
*tap
);
2279 bar_timeout(void *arg
)
2281 struct ieee80211_tx_ampdu
*tap
= arg
;
2282 struct ieee80211_node
*ni
= tap
->txa_ni
;
2284 KASSERT((tap
->txa_flags
& IEEE80211_AGGR_XCHGPEND
) == 0,
2285 ("bar/addba collision, flags 0x%x", tap
->txa_flags
));
2287 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
2288 ni
, "%s: tid %u flags 0x%x attempts %d", __func__
,
2289 tap
->txa_tid
, tap
->txa_flags
, tap
->txa_attempts
);
2291 /* guard against race with bar_tx_complete */
2292 if ((tap
->txa_flags
& IEEE80211_AGGR_BARPEND
) == 0)
2295 if (tap
->txa_attempts
>= ieee80211_bar_maxtries
) {
2296 struct ieee80211com
*ic
= ni
->ni_ic
;
2298 ni
->ni_vap
->iv_stats
.is_ampdu_bar_tx_fail
++;
2300 * If (at least) the last BAR TX timeout was due to
2301 * an ieee80211_send_bar() failures, then we need
2302 * to make sure we notify the driver that a BAR
2303 * TX did occur and fail. This gives the driver
2304 * a chance to undo any queue pause that may
2307 ic
->ic_bar_response(ni
, tap
, 1);
2308 ieee80211_ampdu_stop(ni
, tap
, IEEE80211_REASON_TIMEOUT
);
2310 ni
->ni_vap
->iv_stats
.is_ampdu_bar_tx_retry
++;
2311 if (ieee80211_send_bar(ni
, tap
, tap
->txa_seqpending
) != 0) {
2312 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
2313 ni
, "%s: failed to TX, starting timer\n",
2316 * If ieee80211_send_bar() fails here, the
2317 * timer may have stopped and/or the pending
2318 * flag may be clear. Because of this,
2319 * fake the BARPEND and reset the timer.
2320 * A retransmission attempt will then occur
2321 * during the next timeout.
2324 tap
->txa_flags
|= IEEE80211_AGGR_BARPEND
;
2325 bar_start_timer(tap
);
2331 bar_start_timer(struct ieee80211_tx_ampdu
*tap
)
2333 IEEE80211_NOTE(tap
->txa_ni
->ni_vap
, IEEE80211_MSG_11N
,
2337 callout_reset(&tap
->txa_timer
, ieee80211_bar_timeout
, bar_timeout
, tap
);
2341 bar_stop_timer(struct ieee80211_tx_ampdu
*tap
)
2343 IEEE80211_NOTE(tap
->txa_ni
->ni_vap
, IEEE80211_MSG_11N
,
2347 callout_stop(&tap
->txa_timer
);
2351 bar_tx_complete(struct ieee80211_node
*ni
, void *arg
, int status
)
2353 struct ieee80211_tx_ampdu
*tap
= arg
;
2355 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
2356 ni
, "%s: tid %u flags 0x%x pending %d status %d",
2357 __func__
, tap
->txa_tid
, tap
->txa_flags
,
2358 callout_pending(&tap
->txa_timer
), status
);
2360 ni
->ni_vap
->iv_stats
.is_ampdu_bar_tx
++;
2362 if ((tap
->txa_flags
& IEEE80211_AGGR_BARPEND
) &&
2363 callout_pending(&tap
->txa_timer
)) {
2364 struct ieee80211com
*ic
= ni
->ni_ic
;
2366 if (status
== 0) /* ACK'd */
2367 bar_stop_timer(tap
);
2368 ic
->ic_bar_response(ni
, tap
, status
);
2369 /* NB: just let timer expire so we pace requests */
2374 ieee80211_bar_response(struct ieee80211_node
*ni
,
2375 struct ieee80211_tx_ampdu
*tap
, int status
)
2378 IEEE80211_NOTE(tap
->txa_ni
->ni_vap
, IEEE80211_MSG_11N
,
2382 if (status
== 0) { /* got ACK */
2383 IEEE80211_NOTE(ni
->ni_vap
, IEEE80211_MSG_11N
,
2384 ni
, "BAR moves BA win <%u:%u> (%u frames) txseq %u tid %u",
2386 IEEE80211_SEQ_ADD(tap
->txa_start
, tap
->txa_wnd
-1),
2387 tap
->txa_qframes
, tap
->txa_seqpending
,
2390 /* NB: timer already stopped in bar_tx_complete */
2391 tap
->txa_start
= tap
->txa_seqpending
;
2392 tap
->txa_flags
&= ~IEEE80211_AGGR_BARPEND
;
2397 * Transmit a BAR frame to the specified node. The
2398 * BAR contents are drawn from the supplied aggregation
2399 * state associated with the node.
2401 * NB: we only handle immediate ACK w/ compressed bitmap.
2404 ieee80211_send_bar(struct ieee80211_node
*ni
,
2405 struct ieee80211_tx_ampdu
*tap
, ieee80211_seq seq
)
2407 #define senderr(_x, _v) do { vap->iv_stats._v++; ret = _x; goto bad; } while (0)
2408 struct ieee80211vap
*vap
= ni
->ni_vap
;
2409 struct ieee80211com
*ic
= ni
->ni_ic
;
2410 struct ieee80211_frame_bar
*bar
;
2412 uint16_t barctl
, barseqctl
;
2417 IEEE80211_NOTE(tap
->txa_ni
->ni_vap
, IEEE80211_MSG_11N
,
2422 if ((tap
->txa_flags
& IEEE80211_AGGR_RUNNING
) == 0) {
2423 /* no ADDBA response, should not happen */
2428 bar_stop_timer(tap
);
2430 ieee80211_ref_node(ni
);
2432 m
= ieee80211_getmgtframe(&frm
, ic
->ic_headroom
, sizeof(*bar
));
2434 senderr(ENOMEM
, is_tx_nobuf
);
2436 if (!ieee80211_add_callback(m
, bar_tx_complete
, tap
)) {
2438 senderr(ENOMEM
, is_tx_nobuf
); /* XXX */
2442 bar
= mtod(m
, struct ieee80211_frame_bar
*);
2443 bar
->i_fc
[0] = IEEE80211_FC0_VERSION_0
|
2444 IEEE80211_FC0_TYPE_CTL
| IEEE80211_FC0_SUBTYPE_BAR
;
2446 IEEE80211_ADDR_COPY(bar
->i_ra
, ni
->ni_macaddr
);
2447 IEEE80211_ADDR_COPY(bar
->i_ta
, vap
->iv_myaddr
);
2450 barctl
= (tap
->txa_flags
& IEEE80211_AGGR_IMMEDIATE
?
2451 0 : IEEE80211_BAR_NOACK
)
2452 | IEEE80211_BAR_COMP
2453 | SM(tid
, IEEE80211_BAR_TID
)
2455 barseqctl
= SM(seq
, IEEE80211_BAR_SEQ_START
);
2456 /* NB: known to have proper alignment */
2457 bar
->i_ctl
= htole16(barctl
);
2458 bar
->i_seq
= htole16(barseqctl
);
2459 m
->m_pkthdr
.len
= m
->m_len
= sizeof(struct ieee80211_frame_bar
);
2461 M_WME_SETAC(m
, WME_AC_VO
);
2463 IEEE80211_NODE_STAT(ni
, tx_mgmt
); /* XXX tx_ctl? */
2466 /* init/bump attempts counter */
2467 if ((tap
->txa_flags
& IEEE80211_AGGR_BARPEND
) == 0)
2468 tap
->txa_attempts
= 1;
2470 tap
->txa_attempts
++;
2471 tap
->txa_seqpending
= seq
;
2472 tap
->txa_flags
|= IEEE80211_AGGR_BARPEND
;
2474 IEEE80211_NOTE(vap
, IEEE80211_MSG_DEBUG
| IEEE80211_MSG_11N
,
2475 ni
, "send BAR: tid %u ctl 0x%x start %u (attempt %d)",
2476 tid
, barctl
, seq
, tap
->txa_attempts
);
2479 * ic_raw_xmit will free the node reference
2480 * regardless of queue/TX success or failure.
2482 IEEE80211_TX_LOCK(ic
);
2483 ret
= ieee80211_raw_output(vap
, ni
, m
, NULL
);
2484 IEEE80211_TX_UNLOCK(ic
);
2486 IEEE80211_NOTE(vap
, IEEE80211_MSG_DEBUG
| IEEE80211_MSG_11N
,
2487 ni
, "send BAR: failed: (ret = %d)\n",
2489 /* xmit failed, clear state flag */
2490 tap
->txa_flags
&= ~IEEE80211_AGGR_BARPEND
;
2491 vap
->iv_stats
.is_ampdu_bar_tx_fail
++;
2494 /* XXX hack against tx complete happening before timer is started */
2495 if (tap
->txa_flags
& IEEE80211_AGGR_BARPEND
)
2496 bar_start_timer(tap
);
2499 IEEE80211_NOTE(tap
->txa_ni
->ni_vap
, IEEE80211_MSG_11N
,
2503 vap
->iv_stats
.is_ampdu_bar_tx_fail
++;
2504 ieee80211_free_node(ni
);
2510 ht_action_output(struct ieee80211_node
*ni
, struct mbuf
*m
)
2512 struct ieee80211_bpf_params params
;
2514 memset(¶ms
, 0, sizeof(params
));
2515 params
.ibp_pri
= WME_AC_VO
;
2516 params
.ibp_rate0
= ni
->ni_txparms
->mgmtrate
;
2517 /* NB: we know all frames are unicast */
2518 params
.ibp_try0
= ni
->ni_txparms
->maxretry
;
2519 params
.ibp_power
= ni
->ni_txpower
;
2520 return ieee80211_mgmt_output(ni
, m
, IEEE80211_FC0_SUBTYPE_ACTION
,
2524 #define ADDSHORT(frm, v) do { \
2525 frm[0] = (v) & 0xff; \
2526 frm[1] = (v) >> 8; \
2531 * Send an action management frame. The arguments are stuff
2532 * into a frame without inspection; the caller is assumed to
2533 * prepare them carefully (e.g. based on the aggregation state).
2536 ht_send_action_ba_addba(struct ieee80211_node
*ni
,
2537 int category
, int action
, void *arg0
)
2539 struct ieee80211vap
*vap
= ni
->ni_vap
;
2540 struct ieee80211com
*ic
= ni
->ni_ic
;
2541 uint16_t *args
= arg0
;
2545 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
2546 "send ADDBA %s: dialogtoken %d status %d "
2547 "baparamset 0x%x (tid %d) batimeout 0x%x baseqctl 0x%x",
2548 (action
== IEEE80211_ACTION_BA_ADDBA_REQUEST
) ?
2549 "request" : "response",
2550 args
[0], args
[1], args
[2], MS(args
[2], IEEE80211_BAPS_TID
),
2553 IEEE80211_DPRINTF(vap
, IEEE80211_MSG_NODE
,
2554 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__
, __LINE__
,
2555 ni
, ether_sprintf(ni
->ni_macaddr
), ieee80211_node_refcnt(ni
)+1);
2556 ieee80211_ref_node(ni
);
2558 m
= ieee80211_getmgtframe(&frm
,
2559 ic
->ic_headroom
+ sizeof(struct ieee80211_frame
),
2560 sizeof(uint16_t) /* action+category */
2561 /* XXX may action payload */
2562 + sizeof(struct ieee80211_action_ba_addbaresponse
)
2567 *frm
++ = args
[0]; /* dialog token */
2568 if (action
== IEEE80211_ACTION_BA_ADDBA_RESPONSE
)
2569 ADDSHORT(frm
, args
[1]); /* status code */
2570 ADDSHORT(frm
, args
[2]); /* baparamset */
2571 ADDSHORT(frm
, args
[3]); /* batimeout */
2572 if (action
== IEEE80211_ACTION_BA_ADDBA_REQUEST
)
2573 ADDSHORT(frm
, args
[4]); /* baseqctl */
2574 m
->m_pkthdr
.len
= m
->m_len
= frm
- mtod(m
, uint8_t *);
2575 return ht_action_output(ni
, m
);
2577 vap
->iv_stats
.is_tx_nobuf
++;
2578 ieee80211_free_node(ni
);
2584 ht_send_action_ba_delba(struct ieee80211_node
*ni
,
2585 int category
, int action
, void *arg0
)
2587 struct ieee80211vap
*vap
= ni
->ni_vap
;
2588 struct ieee80211com
*ic
= ni
->ni_ic
;
2589 uint16_t *args
= arg0
;
2591 uint16_t baparamset
;
2594 baparamset
= SM(args
[0], IEEE80211_DELBAPS_TID
)
2597 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
2598 "send DELBA action: tid %d, initiator %d reason %d (%s)",
2599 args
[0], args
[1], args
[2], ieee80211_reason_to_string(args
[2]));
2601 IEEE80211_DPRINTF(vap
, IEEE80211_MSG_NODE
,
2602 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__
, __LINE__
,
2603 ni
, ether_sprintf(ni
->ni_macaddr
), ieee80211_node_refcnt(ni
)+1);
2604 ieee80211_ref_node(ni
);
2606 m
= ieee80211_getmgtframe(&frm
,
2607 ic
->ic_headroom
+ sizeof(struct ieee80211_frame
),
2608 sizeof(uint16_t) /* action+category */
2609 /* XXX may action payload */
2610 + sizeof(struct ieee80211_action_ba_addbaresponse
)
2615 ADDSHORT(frm
, baparamset
);
2616 ADDSHORT(frm
, args
[2]); /* reason code */
2617 m
->m_pkthdr
.len
= m
->m_len
= frm
- mtod(m
, uint8_t *);
2618 return ht_action_output(ni
, m
);
2620 vap
->iv_stats
.is_tx_nobuf
++;
2621 ieee80211_free_node(ni
);
2627 ht_send_action_ht_txchwidth(struct ieee80211_node
*ni
,
2628 int category
, int action
, void *arg0
)
2630 struct ieee80211vap
*vap
= ni
->ni_vap
;
2631 struct ieee80211com
*ic
= ni
->ni_ic
;
2635 IEEE80211_NOTE(vap
, IEEE80211_MSG_ACTION
| IEEE80211_MSG_11N
, ni
,
2636 "send HT txchwidth: width %d",
2637 IEEE80211_IS_CHAN_HT40(ni
->ni_chan
) ? 40 : 20);
2639 IEEE80211_DPRINTF(vap
, IEEE80211_MSG_NODE
,
2640 "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__
, __LINE__
,
2641 ni
, ether_sprintf(ni
->ni_macaddr
), ieee80211_node_refcnt(ni
)+1);
2642 ieee80211_ref_node(ni
);
2644 m
= ieee80211_getmgtframe(&frm
,
2645 ic
->ic_headroom
+ sizeof(struct ieee80211_frame
),
2646 sizeof(uint16_t) /* action+category */
2647 /* XXX may action payload */
2648 + sizeof(struct ieee80211_action_ba_addbaresponse
)
2653 *frm
++ = IEEE80211_IS_CHAN_HT40(ni
->ni_chan
) ?
2654 IEEE80211_A_HT_TXCHWIDTH_2040
:
2655 IEEE80211_A_HT_TXCHWIDTH_20
;
2656 m
->m_pkthdr
.len
= m
->m_len
= frm
- mtod(m
, uint8_t *);
2657 return ht_action_output(ni
, m
);
2659 vap
->iv_stats
.is_tx_nobuf
++;
2660 ieee80211_free_node(ni
);
2667 * Construct the MCS bit mask for inclusion in an HT capabilities
2668 * information element.
2671 ieee80211_set_mcsset(struct ieee80211com
*ic
, uint8_t *frm
)
2676 KASSERT((ic
->ic_rxstream
> 0 && ic
->ic_rxstream
<= 4),
2677 ("ic_rxstream %d out of range", ic
->ic_rxstream
));
2678 KASSERT((ic
->ic_txstream
> 0 && ic
->ic_txstream
<= 4),
2679 ("ic_txstream %d out of range", ic
->ic_txstream
));
2681 for (i
= 0; i
< ic
->ic_rxstream
* 8; i
++)
2683 if ((ic
->ic_htcaps
& IEEE80211_HTCAP_CHWIDTH40
) &&
2684 (ic
->ic_htcaps
& IEEE80211_HTC_RXMCS32
))
2686 if (ic
->ic_htcaps
& IEEE80211_HTC_RXUNEQUAL
) {
2687 if (ic
->ic_rxstream
>= 2) {
2688 for (i
= 33; i
<= 38; i
++)
2691 if (ic
->ic_rxstream
>= 3) {
2692 for (i
= 39; i
<= 52; i
++)
2695 if (ic
->ic_txstream
>= 4) {
2696 for (i
= 53; i
<= 76; i
++)
2701 if (ic
->ic_rxstream
!= ic
->ic_txstream
) {
2702 txparams
= 0x1; /* TX MCS set defined */
2703 txparams
|= 0x2; /* TX RX MCS not equal */
2704 txparams
|= (ic
->ic_txstream
- 1) << 2; /* num TX streams */
2705 if (ic
->ic_htcaps
& IEEE80211_HTC_TXUNEQUAL
)
2706 txparams
|= 0x16; /* TX unequal modulation sup */
2713 * Add body of an HTCAP information element.
2716 ieee80211_add_htcap_body(uint8_t *frm
, struct ieee80211_node
*ni
)
2718 #define ADDSHORT(frm, v) do { \
2719 frm[0] = (v) & 0xff; \
2720 frm[1] = (v) >> 8; \
2723 struct ieee80211com
*ic
= ni
->ni_ic
;
2724 struct ieee80211vap
*vap
= ni
->ni_vap
;
2725 uint16_t caps
, extcaps
;
2728 /* HT capabilities */
2729 caps
= vap
->iv_htcaps
& 0xffff;
2731 * Note channel width depends on whether we are operating as
2732 * a sta or not. When operating as a sta we are generating
2733 * a request based on our desired configuration. Otherwise
2734 * we are operational and the channel attributes identify
2735 * how we've been setup (which might be different if a fixed
2736 * channel is specified).
2738 if (vap
->iv_opmode
== IEEE80211_M_STA
) {
2739 /* override 20/40 use based on config */
2740 if (vap
->iv_flags_ht
& IEEE80211_FHT_USEHT40
)
2741 caps
|= IEEE80211_HTCAP_CHWIDTH40
;
2743 caps
&= ~IEEE80211_HTCAP_CHWIDTH40
;
2745 /* Start by using the advertised settings */
2746 rxmax
= MS(ni
->ni_htparam
, IEEE80211_HTCAP_MAXRXAMPDU
);
2747 density
= MS(ni
->ni_htparam
, IEEE80211_HTCAP_MPDUDENSITY
);
2749 IEEE80211_DPRINTF(vap
, IEEE80211_MSG_11N
,
2750 "%s: advertised rxmax=%d, density=%d, vap rxmax=%d, density=%d\n",
2754 vap
->iv_ampdu_rxmax
,
2755 vap
->iv_ampdu_density
);
2757 /* Cap at VAP rxmax */
2758 if (rxmax
> vap
->iv_ampdu_rxmax
)
2759 rxmax
= vap
->iv_ampdu_rxmax
;
2762 * If the VAP ampdu density value greater, use that.
2764 * (Larger density value == larger minimum gap between A-MPDU
2767 if (vap
->iv_ampdu_density
> density
)
2768 density
= vap
->iv_ampdu_density
;
2771 * NB: Hardware might support HT40 on some but not all
2772 * channels. We can't determine this earlier because only
2773 * after association the channel is upgraded to HT based
2774 * on the negotiated capabilities.
2776 if (ni
->ni_chan
!= IEEE80211_CHAN_ANYC
&&
2777 findhtchan(ic
, ni
->ni_chan
, IEEE80211_CHAN_HT40U
) == NULL
&&
2778 findhtchan(ic
, ni
->ni_chan
, IEEE80211_CHAN_HT40D
) == NULL
)
2779 caps
&= ~IEEE80211_HTCAP_CHWIDTH40
;
2781 /* override 20/40 use based on current channel */
2782 if (IEEE80211_IS_CHAN_HT40(ni
->ni_chan
))
2783 caps
|= IEEE80211_HTCAP_CHWIDTH40
;
2785 caps
&= ~IEEE80211_HTCAP_CHWIDTH40
;
2787 /* XXX TODO should it start by using advertised settings? */
2788 rxmax
= vap
->iv_ampdu_rxmax
;
2789 density
= vap
->iv_ampdu_density
;
2792 /* adjust short GI based on channel and config */
2793 if ((vap
->iv_flags_ht
& IEEE80211_FHT_SHORTGI20
) == 0)
2794 caps
&= ~IEEE80211_HTCAP_SHORTGI20
;
2795 if ((vap
->iv_flags_ht
& IEEE80211_FHT_SHORTGI40
) == 0 ||
2796 (caps
& IEEE80211_HTCAP_CHWIDTH40
) == 0)
2797 caps
&= ~IEEE80211_HTCAP_SHORTGI40
;
2799 /* adjust STBC based on receive capabilities */
2800 if ((vap
->iv_flags_ht
& IEEE80211_FHT_STBC_RX
) == 0)
2801 caps
&= ~IEEE80211_HTCAP_RXSTBC
;
2803 /* XXX TODO: adjust LDPC based on receive capabilities */
2805 ADDSHORT(frm
, caps
);
2808 *frm
= SM(rxmax
, IEEE80211_HTCAP_MAXRXAMPDU
)
2809 | SM(density
, IEEE80211_HTCAP_MPDUDENSITY
)
2813 /* pre-zero remainder of ie */
2814 memset(frm
, 0, sizeof(struct ieee80211_ie_htcap
) -
2815 __offsetof(struct ieee80211_ie_htcap
, hc_mcsset
));
2817 /* supported MCS set */
2819 * XXX: For sta mode the rate set should be restricted based
2820 * on the AP's capabilities, but ni_htrates isn't setup when
2821 * we're called to form an AssocReq frame so for now we're
2822 * restricted to the device capabilities.
2824 ieee80211_set_mcsset(ni
->ni_ic
, frm
);
2826 frm
+= __offsetof(struct ieee80211_ie_htcap
, hc_extcap
) -
2827 __offsetof(struct ieee80211_ie_htcap
, hc_mcsset
);
2829 /* HT extended capabilities */
2830 extcaps
= vap
->iv_htextcaps
& 0xffff;
2832 ADDSHORT(frm
, extcaps
);
2834 frm
+= sizeof(struct ieee80211_ie_htcap
) -
2835 __offsetof(struct ieee80211_ie_htcap
, hc_txbf
);
2842 * Add 802.11n HT capabilities information element
2845 ieee80211_add_htcap(uint8_t *frm
, struct ieee80211_node
*ni
)
2847 frm
[0] = IEEE80211_ELEMID_HTCAP
;
2848 frm
[1] = sizeof(struct ieee80211_ie_htcap
) - 2;
2849 return ieee80211_add_htcap_body(frm
+ 2, ni
);
2853 * Add Broadcom OUI wrapped standard HTCAP ie; this is
2854 * used for compatibility w/ pre-draft implementations.
2857 ieee80211_add_htcap_vendor(uint8_t *frm
, struct ieee80211_node
*ni
)
2859 frm
[0] = IEEE80211_ELEMID_VENDOR
;
2860 frm
[1] = 4 + sizeof(struct ieee80211_ie_htcap
) - 2;
2861 frm
[2] = (BCM_OUI
>> 0) & 0xff;
2862 frm
[3] = (BCM_OUI
>> 8) & 0xff;
2863 frm
[4] = (BCM_OUI
>> 16) & 0xff;
2864 frm
[5] = BCM_OUI_HTCAP
;
2865 return ieee80211_add_htcap_body(frm
+ 6, ni
);
2869 * Construct the MCS bit mask of basic rates
2870 * for inclusion in an HT information element.
2873 ieee80211_set_basic_htrates(uint8_t *frm
, const struct ieee80211_htrateset
*rs
)
2877 for (i
= 0; i
< rs
->rs_nrates
; i
++) {
2878 int r
= rs
->rs_rates
[i
] & IEEE80211_RATE_VAL
;
2879 if ((rs
->rs_rates
[i
] & IEEE80211_RATE_BASIC
) &&
2880 r
< IEEE80211_HTRATE_MAXSIZE
) {
2881 /* NB: this assumes a particular implementation */
2888 * Update the HTINFO ie for a beacon frame.
2891 ieee80211_ht_update_beacon(struct ieee80211vap
*vap
,
2892 struct ieee80211_beacon_offsets
*bo
)
2894 #define PROTMODE (IEEE80211_HTINFO_OPMODE|IEEE80211_HTINFO_NONHT_PRESENT)
2895 struct ieee80211_node
*ni
;
2896 const struct ieee80211_channel
*bsschan
;
2897 struct ieee80211com
*ic
= vap
->iv_ic
;
2898 struct ieee80211_ie_htinfo
*ht
=
2899 (struct ieee80211_ie_htinfo
*) bo
->bo_htinfo
;
2901 ni
= ieee80211_ref_node(vap
->iv_bss
);
2902 bsschan
= ni
->ni_chan
;
2904 /* XXX only update on channel change */
2905 ht
->hi_ctrlchannel
= ieee80211_chan2ieee(ic
, bsschan
);
2906 if (vap
->iv_flags_ht
& IEEE80211_FHT_RIFS
)
2907 ht
->hi_byte1
= IEEE80211_HTINFO_RIFSMODE_PERM
;
2909 ht
->hi_byte1
= IEEE80211_HTINFO_RIFSMODE_PROH
;
2910 if (IEEE80211_IS_CHAN_HT40U(bsschan
))
2911 ht
->hi_byte1
|= IEEE80211_HTINFO_2NDCHAN_ABOVE
;
2912 else if (IEEE80211_IS_CHAN_HT40D(bsschan
))
2913 ht
->hi_byte1
|= IEEE80211_HTINFO_2NDCHAN_BELOW
;
2915 ht
->hi_byte1
|= IEEE80211_HTINFO_2NDCHAN_NONE
;
2916 if (IEEE80211_IS_CHAN_HT40(bsschan
))
2917 ht
->hi_byte1
|= IEEE80211_HTINFO_TXWIDTH_2040
;
2919 /* protection mode */
2920 ht
->hi_byte2
= (ht
->hi_byte2
&~ PROTMODE
) | ic
->ic_curhtprotmode
;
2922 ieee80211_free_node(ni
);
2924 /* XXX propagate to vendor ie's */
2929 * Add body of an HTINFO information element.
2931 * NB: We don't use struct ieee80211_ie_htinfo because we can
2932 * be called to fillin both a standard ie and a compat ie that
2933 * has a vendor OUI at the front.
2936 ieee80211_add_htinfo_body(uint8_t *frm
, struct ieee80211_node
*ni
)
2938 struct ieee80211vap
*vap
= ni
->ni_vap
;
2939 struct ieee80211com
*ic
= ni
->ni_ic
;
2941 /* pre-zero remainder of ie */
2942 memset(frm
, 0, sizeof(struct ieee80211_ie_htinfo
) - 2);
2944 /* primary/control channel center */
2945 *frm
++ = ieee80211_chan2ieee(ic
, ni
->ni_chan
);
2947 if (vap
->iv_flags_ht
& IEEE80211_FHT_RIFS
)
2948 frm
[0] = IEEE80211_HTINFO_RIFSMODE_PERM
;
2950 frm
[0] = IEEE80211_HTINFO_RIFSMODE_PROH
;
2951 if (IEEE80211_IS_CHAN_HT40U(ni
->ni_chan
))
2952 frm
[0] |= IEEE80211_HTINFO_2NDCHAN_ABOVE
;
2953 else if (IEEE80211_IS_CHAN_HT40D(ni
->ni_chan
))
2954 frm
[0] |= IEEE80211_HTINFO_2NDCHAN_BELOW
;
2956 frm
[0] |= IEEE80211_HTINFO_2NDCHAN_NONE
;
2957 if (IEEE80211_IS_CHAN_HT40(ni
->ni_chan
))
2958 frm
[0] |= IEEE80211_HTINFO_TXWIDTH_2040
;
2960 frm
[1] = ic
->ic_curhtprotmode
;
2965 ieee80211_set_basic_htrates(frm
, &ni
->ni_htrates
);
2966 frm
+= sizeof(struct ieee80211_ie_htinfo
) -
2967 __offsetof(struct ieee80211_ie_htinfo
, hi_basicmcsset
);
2972 * Add 802.11n HT information information element.
2975 ieee80211_add_htinfo(uint8_t *frm
, struct ieee80211_node
*ni
)
2977 frm
[0] = IEEE80211_ELEMID_HTINFO
;
2978 frm
[1] = sizeof(struct ieee80211_ie_htinfo
) - 2;
2979 return ieee80211_add_htinfo_body(frm
+ 2, ni
);
2983 * Add Broadcom OUI wrapped standard HTINFO ie; this is
2984 * used for compatibility w/ pre-draft implementations.
2987 ieee80211_add_htinfo_vendor(uint8_t *frm
, struct ieee80211_node
*ni
)
2989 frm
[0] = IEEE80211_ELEMID_VENDOR
;
2990 frm
[1] = 4 + sizeof(struct ieee80211_ie_htinfo
) - 2;
2991 frm
[2] = (BCM_OUI
>> 0) & 0xff;
2992 frm
[3] = (BCM_OUI
>> 8) & 0xff;
2993 frm
[4] = (BCM_OUI
>> 16) & 0xff;
2994 frm
[5] = BCM_OUI_HTINFO
;
2995 return ieee80211_add_htinfo_body(frm
+ 6, ni
);