9bbb992f11
before using said node. The "blessed" way here is to take a node reference before referencing anything inside the node, otherwise the node can be freed between the time the pointer is copied/dereferenced and the time the node contents are used. This mirrors fixes that I've done elsewhere in the net80211/driver stack. PR: kern/178470
2878 lines
83 KiB
C
2878 lines
83 KiB
C
/*-
|
|
* Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
|
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* All rights reserved.
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*
|
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
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* are met:
|
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* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
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|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
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*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifdef __FreeBSD__
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__FBSDID("$FreeBSD$");
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#endif
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/*
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* IEEE 802.11n protocol support.
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*/
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#include "opt_inet.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/endian.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/ethernet.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_action.h>
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#include <net80211/ieee80211_input.h>
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/* define here, used throughout file */
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#define MS(_v, _f) (((_v) & _f) >> _f##_S)
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#define SM(_v, _f) (((_v) << _f##_S) & _f)
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const struct ieee80211_mcs_rates ieee80211_htrates[IEEE80211_HTRATE_MAXSIZE] = {
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{ 13, 14, 27, 30 }, /* MCS 0 */
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{ 26, 29, 54, 60 }, /* MCS 1 */
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{ 39, 43, 81, 90 }, /* MCS 2 */
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{ 52, 58, 108, 120 }, /* MCS 3 */
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{ 78, 87, 162, 180 }, /* MCS 4 */
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{ 104, 116, 216, 240 }, /* MCS 5 */
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{ 117, 130, 243, 270 }, /* MCS 6 */
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{ 130, 144, 270, 300 }, /* MCS 7 */
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{ 26, 29, 54, 60 }, /* MCS 8 */
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{ 52, 58, 108, 120 }, /* MCS 9 */
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{ 78, 87, 162, 180 }, /* MCS 10 */
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{ 104, 116, 216, 240 }, /* MCS 11 */
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{ 156, 173, 324, 360 }, /* MCS 12 */
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{ 208, 231, 432, 480 }, /* MCS 13 */
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{ 234, 260, 486, 540 }, /* MCS 14 */
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{ 260, 289, 540, 600 }, /* MCS 15 */
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{ 39, 43, 81, 90 }, /* MCS 16 */
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{ 78, 87, 162, 180 }, /* MCS 17 */
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{ 117, 130, 243, 270 }, /* MCS 18 */
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{ 156, 173, 324, 360 }, /* MCS 19 */
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{ 234, 260, 486, 540 }, /* MCS 20 */
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{ 312, 347, 648, 720 }, /* MCS 21 */
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{ 351, 390, 729, 810 }, /* MCS 22 */
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{ 390, 433, 810, 900 }, /* MCS 23 */
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{ 52, 58, 108, 120 }, /* MCS 24 */
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{ 104, 116, 216, 240 }, /* MCS 25 */
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{ 156, 173, 324, 360 }, /* MCS 26 */
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{ 208, 231, 432, 480 }, /* MCS 27 */
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{ 312, 347, 648, 720 }, /* MCS 28 */
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{ 416, 462, 864, 960 }, /* MCS 29 */
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{ 468, 520, 972, 1080 }, /* MCS 30 */
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{ 520, 578, 1080, 1200 }, /* MCS 31 */
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{ 0, 0, 12, 13 }, /* MCS 32 */
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{ 78, 87, 162, 180 }, /* MCS 33 */
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{ 104, 116, 216, 240 }, /* MCS 34 */
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{ 130, 144, 270, 300 }, /* MCS 35 */
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{ 117, 130, 243, 270 }, /* MCS 36 */
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{ 156, 173, 324, 360 }, /* MCS 37 */
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{ 195, 217, 405, 450 }, /* MCS 38 */
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{ 104, 116, 216, 240 }, /* MCS 39 */
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{ 130, 144, 270, 300 }, /* MCS 40 */
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{ 130, 144, 270, 300 }, /* MCS 41 */
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{ 156, 173, 324, 360 }, /* MCS 42 */
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{ 182, 202, 378, 420 }, /* MCS 43 */
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{ 182, 202, 378, 420 }, /* MCS 44 */
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{ 208, 231, 432, 480 }, /* MCS 45 */
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{ 156, 173, 324, 360 }, /* MCS 46 */
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{ 195, 217, 405, 450 }, /* MCS 47 */
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{ 195, 217, 405, 450 }, /* MCS 48 */
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{ 234, 260, 486, 540 }, /* MCS 49 */
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{ 273, 303, 567, 630 }, /* MCS 50 */
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{ 273, 303, 567, 630 }, /* MCS 51 */
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{ 312, 347, 648, 720 }, /* MCS 52 */
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{ 130, 144, 270, 300 }, /* MCS 53 */
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{ 156, 173, 324, 360 }, /* MCS 54 */
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{ 182, 202, 378, 420 }, /* MCS 55 */
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{ 156, 173, 324, 360 }, /* MCS 56 */
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{ 182, 202, 378, 420 }, /* MCS 57 */
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{ 208, 231, 432, 480 }, /* MCS 58 */
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{ 234, 260, 486, 540 }, /* MCS 59 */
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{ 208, 231, 432, 480 }, /* MCS 60 */
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{ 234, 260, 486, 540 }, /* MCS 61 */
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{ 260, 289, 540, 600 }, /* MCS 62 */
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{ 260, 289, 540, 600 }, /* MCS 63 */
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{ 286, 318, 594, 660 }, /* MCS 64 */
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{ 195, 217, 405, 450 }, /* MCS 65 */
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{ 234, 260, 486, 540 }, /* MCS 66 */
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{ 273, 303, 567, 630 }, /* MCS 67 */
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{ 234, 260, 486, 540 }, /* MCS 68 */
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{ 273, 303, 567, 630 }, /* MCS 69 */
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{ 312, 347, 648, 720 }, /* MCS 70 */
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{ 351, 390, 729, 810 }, /* MCS 71 */
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{ 312, 347, 648, 720 }, /* MCS 72 */
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{ 351, 390, 729, 810 }, /* MCS 73 */
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{ 390, 433, 810, 900 }, /* MCS 74 */
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{ 390, 433, 810, 900 }, /* MCS 75 */
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{ 429, 477, 891, 990 }, /* MCS 76 */
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};
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#ifdef IEEE80211_AMPDU_AGE
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static int ieee80211_ampdu_age = -1; /* threshold for ampdu reorder q (ms) */
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SYSCTL_PROC(_net_wlan, OID_AUTO, ampdu_age, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_ampdu_age, 0, ieee80211_sysctl_msecs_ticks, "I",
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"AMPDU max reorder age (ms)");
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#endif
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static int ieee80211_recv_bar_ena = 1;
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SYSCTL_INT(_net_wlan, OID_AUTO, recv_bar, CTLFLAG_RW, &ieee80211_recv_bar_ena,
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0, "BAR frame processing (ena/dis)");
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static int ieee80211_addba_timeout = -1;/* timeout for ADDBA response */
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SYSCTL_PROC(_net_wlan, OID_AUTO, addba_timeout, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_addba_timeout, 0, ieee80211_sysctl_msecs_ticks, "I",
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"ADDBA request timeout (ms)");
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static int ieee80211_addba_backoff = -1;/* backoff after max ADDBA requests */
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SYSCTL_PROC(_net_wlan, OID_AUTO, addba_backoff, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_addba_backoff, 0, ieee80211_sysctl_msecs_ticks, "I",
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"ADDBA request backoff (ms)");
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static int ieee80211_addba_maxtries = 3;/* max ADDBA requests before backoff */
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SYSCTL_INT(_net_wlan, OID_AUTO, addba_maxtries, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_addba_maxtries, 0, "max ADDBA requests sent before backoff");
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static int ieee80211_bar_timeout = -1; /* timeout waiting for BAR response */
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static int ieee80211_bar_maxtries = 50;/* max BAR requests before DELBA */
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static ieee80211_recv_action_func ht_recv_action_ba_addba_request;
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static ieee80211_recv_action_func ht_recv_action_ba_addba_response;
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static ieee80211_recv_action_func ht_recv_action_ba_delba;
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static ieee80211_recv_action_func ht_recv_action_ht_mimopwrsave;
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static ieee80211_recv_action_func ht_recv_action_ht_txchwidth;
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static ieee80211_send_action_func ht_send_action_ba_addba;
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static ieee80211_send_action_func ht_send_action_ba_delba;
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static ieee80211_send_action_func ht_send_action_ht_txchwidth;
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static void
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ieee80211_ht_init(void)
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{
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/*
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* Setup HT parameters that depends on the clock frequency.
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*/
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#ifdef IEEE80211_AMPDU_AGE
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ieee80211_ampdu_age = msecs_to_ticks(500);
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#endif
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ieee80211_addba_timeout = msecs_to_ticks(250);
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ieee80211_addba_backoff = msecs_to_ticks(10*1000);
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ieee80211_bar_timeout = msecs_to_ticks(250);
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/*
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|
* Register action frame handlers.
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|
*/
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA,
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IEEE80211_ACTION_BA_ADDBA_REQUEST, ht_recv_action_ba_addba_request);
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA,
|
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IEEE80211_ACTION_BA_ADDBA_RESPONSE, ht_recv_action_ba_addba_response);
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|
ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA,
|
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IEEE80211_ACTION_BA_DELBA, ht_recv_action_ba_delba);
|
|
ieee80211_recv_action_register(IEEE80211_ACTION_CAT_HT,
|
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IEEE80211_ACTION_HT_MIMOPWRSAVE, ht_recv_action_ht_mimopwrsave);
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_HT,
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IEEE80211_ACTION_HT_TXCHWIDTH, ht_recv_action_ht_txchwidth);
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|
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|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA,
|
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IEEE80211_ACTION_BA_ADDBA_REQUEST, ht_send_action_ba_addba);
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ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA,
|
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IEEE80211_ACTION_BA_ADDBA_RESPONSE, ht_send_action_ba_addba);
|
|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA,
|
|
IEEE80211_ACTION_BA_DELBA, ht_send_action_ba_delba);
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|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_HT,
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IEEE80211_ACTION_HT_TXCHWIDTH, ht_send_action_ht_txchwidth);
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|
}
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SYSINIT(wlan_ht, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_ht_init, NULL);
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|
|
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static int ieee80211_ampdu_enable(struct ieee80211_node *ni,
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struct ieee80211_tx_ampdu *tap);
|
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static int ieee80211_addba_request(struct ieee80211_node *ni,
|
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struct ieee80211_tx_ampdu *tap,
|
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int dialogtoken, int baparamset, int batimeout);
|
|
static int ieee80211_addba_response(struct ieee80211_node *ni,
|
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struct ieee80211_tx_ampdu *tap,
|
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int code, int baparamset, int batimeout);
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|
static void ieee80211_addba_stop(struct ieee80211_node *ni,
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struct ieee80211_tx_ampdu *tap);
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static void null_addba_response_timeout(struct ieee80211_node *ni,
|
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struct ieee80211_tx_ampdu *tap);
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|
|
|
static void ieee80211_bar_response(struct ieee80211_node *ni,
|
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struct ieee80211_tx_ampdu *tap, int status);
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|
static void ampdu_tx_stop(struct ieee80211_tx_ampdu *tap);
|
|
static void bar_stop_timer(struct ieee80211_tx_ampdu *tap);
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static int ampdu_rx_start(struct ieee80211_node *, struct ieee80211_rx_ampdu *,
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int baparamset, int batimeout, int baseqctl);
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static void ampdu_rx_stop(struct ieee80211_node *, struct ieee80211_rx_ampdu *);
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|
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void
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ieee80211_ht_attach(struct ieee80211com *ic)
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{
|
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/* setup default aggregation policy */
|
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ic->ic_recv_action = ieee80211_recv_action;
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ic->ic_send_action = ieee80211_send_action;
|
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ic->ic_ampdu_enable = ieee80211_ampdu_enable;
|
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ic->ic_addba_request = ieee80211_addba_request;
|
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ic->ic_addba_response = ieee80211_addba_response;
|
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ic->ic_addba_response_timeout = null_addba_response_timeout;
|
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ic->ic_addba_stop = ieee80211_addba_stop;
|
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ic->ic_bar_response = ieee80211_bar_response;
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ic->ic_ampdu_rx_start = ampdu_rx_start;
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ic->ic_ampdu_rx_stop = ampdu_rx_stop;
|
|
|
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ic->ic_htprotmode = IEEE80211_PROT_RTSCTS;
|
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ic->ic_curhtprotmode = IEEE80211_HTINFO_OPMODE_PURE;
|
|
}
|
|
|
|
void
|
|
ieee80211_ht_detach(struct ieee80211com *ic)
|
|
{
|
|
}
|
|
|
|
void
|
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ieee80211_ht_vattach(struct ieee80211vap *vap)
|
|
{
|
|
|
|
/* driver can override defaults */
|
|
vap->iv_ampdu_rxmax = IEEE80211_HTCAP_MAXRXAMPDU_8K;
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vap->iv_ampdu_density = IEEE80211_HTCAP_MPDUDENSITY_NA;
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vap->iv_ampdu_limit = vap->iv_ampdu_rxmax;
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vap->iv_amsdu_limit = vap->iv_htcaps & IEEE80211_HTCAP_MAXAMSDU;
|
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/* tx aggregation traffic thresholds */
|
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vap->iv_ampdu_mintraffic[WME_AC_BK] = 128;
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vap->iv_ampdu_mintraffic[WME_AC_BE] = 64;
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vap->iv_ampdu_mintraffic[WME_AC_VO] = 32;
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vap->iv_ampdu_mintraffic[WME_AC_VI] = 32;
|
|
|
|
if (vap->iv_htcaps & IEEE80211_HTC_HT) {
|
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/*
|
|
* Device is HT capable; enable all HT-related
|
|
* facilities by default.
|
|
* XXX these choices may be too aggressive.
|
|
*/
|
|
vap->iv_flags_ht |= IEEE80211_FHT_HT
|
|
| IEEE80211_FHT_HTCOMPAT
|
|
;
|
|
if (vap->iv_htcaps & IEEE80211_HTCAP_SHORTGI20)
|
|
vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI20;
|
|
/* XXX infer from channel list? */
|
|
if (vap->iv_htcaps & IEEE80211_HTCAP_CHWIDTH40) {
|
|
vap->iv_flags_ht |= IEEE80211_FHT_USEHT40;
|
|
if (vap->iv_htcaps & IEEE80211_HTCAP_SHORTGI40)
|
|
vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI40;
|
|
}
|
|
/* enable RIFS if capable */
|
|
if (vap->iv_htcaps & IEEE80211_HTC_RIFS)
|
|
vap->iv_flags_ht |= IEEE80211_FHT_RIFS;
|
|
|
|
/* NB: A-MPDU and A-MSDU rx are mandated, these are tx only */
|
|
vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_RX;
|
|
if (vap->iv_htcaps & IEEE80211_HTC_AMPDU)
|
|
vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_TX;
|
|
vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_RX;
|
|
if (vap->iv_htcaps & IEEE80211_HTC_AMSDU)
|
|
vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_TX;
|
|
}
|
|
/* NB: disable default legacy WDS, too many issues right now */
|
|
if (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY)
|
|
vap->iv_flags_ht &= ~IEEE80211_FHT_HT;
|
|
}
|
|
|
|
void
|
|
ieee80211_ht_vdetach(struct ieee80211vap *vap)
|
|
{
|
|
}
|
|
|
|
static int
|
|
ht_getrate(struct ieee80211com *ic, int index, enum ieee80211_phymode mode,
|
|
int ratetype)
|
|
{
|
|
int mword, rate;
|
|
|
|
mword = ieee80211_rate2media(ic, index | IEEE80211_RATE_MCS, mode);
|
|
if (IFM_SUBTYPE(mword) != IFM_IEEE80211_MCS)
|
|
return (0);
|
|
switch (ratetype) {
|
|
case 0:
|
|
rate = ieee80211_htrates[index].ht20_rate_800ns;
|
|
break;
|
|
case 1:
|
|
rate = ieee80211_htrates[index].ht20_rate_400ns;
|
|
break;
|
|
case 2:
|
|
rate = ieee80211_htrates[index].ht40_rate_800ns;
|
|
break;
|
|
default:
|
|
rate = ieee80211_htrates[index].ht40_rate_400ns;
|
|
break;
|
|
}
|
|
return (rate);
|
|
}
|
|
|
|
static struct printranges {
|
|
int minmcs;
|
|
int maxmcs;
|
|
int txstream;
|
|
int ratetype;
|
|
int htcapflags;
|
|
} ranges[] = {
|
|
{ 0, 7, 1, 0, 0 },
|
|
{ 8, 15, 2, 0, 0 },
|
|
{ 16, 23, 3, 0, 0 },
|
|
{ 24, 31, 4, 0, 0 },
|
|
{ 32, 0, 1, 2, IEEE80211_HTC_TXMCS32 },
|
|
{ 33, 38, 2, 0, IEEE80211_HTC_TXUNEQUAL },
|
|
{ 39, 52, 3, 0, IEEE80211_HTC_TXUNEQUAL },
|
|
{ 53, 76, 4, 0, IEEE80211_HTC_TXUNEQUAL },
|
|
{ 0, 0, 0, 0, 0 },
|
|
};
|
|
|
|
static void
|
|
ht_rateprint(struct ieee80211com *ic, enum ieee80211_phymode mode, int ratetype)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
int minrate, maxrate;
|
|
struct printranges *range;
|
|
|
|
for (range = ranges; range->txstream != 0; range++) {
|
|
if (ic->ic_txstream < range->txstream)
|
|
continue;
|
|
if (range->htcapflags &&
|
|
(ic->ic_htcaps & range->htcapflags) == 0)
|
|
continue;
|
|
if (ratetype < range->ratetype)
|
|
continue;
|
|
minrate = ht_getrate(ic, range->minmcs, mode, ratetype);
|
|
maxrate = ht_getrate(ic, range->maxmcs, mode, ratetype);
|
|
if (range->maxmcs) {
|
|
if_printf(ifp, "MCS %d-%d: %d%sMbps - %d%sMbps\n",
|
|
range->minmcs, range->maxmcs,
|
|
minrate/2, ((minrate & 0x1) != 0 ? ".5" : ""),
|
|
maxrate/2, ((maxrate & 0x1) != 0 ? ".5" : ""));
|
|
} else {
|
|
if_printf(ifp, "MCS %d: %d%sMbps\n", range->minmcs,
|
|
minrate/2, ((minrate & 0x1) != 0 ? ".5" : ""));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
ht_announce(struct ieee80211com *ic, enum ieee80211_phymode mode)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
const char *modestr = ieee80211_phymode_name[mode];
|
|
|
|
if_printf(ifp, "%s MCS 20MHz\n", modestr);
|
|
ht_rateprint(ic, mode, 0);
|
|
if (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20) {
|
|
if_printf(ifp, "%s MCS 20MHz SGI\n", modestr);
|
|
ht_rateprint(ic, mode, 1);
|
|
}
|
|
if (ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) {
|
|
if_printf(ifp, "%s MCS 40MHz:\n", modestr);
|
|
ht_rateprint(ic, mode, 2);
|
|
}
|
|
if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
|
|
(ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40)) {
|
|
if_printf(ifp, "%s MCS 40MHz SGI:\n", modestr);
|
|
ht_rateprint(ic, mode, 3);
|
|
}
|
|
}
|
|
|
|
void
|
|
ieee80211_ht_announce(struct ieee80211com *ic)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
|
|
if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
|
|
isset(ic->ic_modecaps, IEEE80211_MODE_11NG))
|
|
if_printf(ifp, "%dT%dR\n", ic->ic_txstream, ic->ic_rxstream);
|
|
if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA))
|
|
ht_announce(ic, IEEE80211_MODE_11NA);
|
|
if (isset(ic->ic_modecaps, IEEE80211_MODE_11NG))
|
|
ht_announce(ic, IEEE80211_MODE_11NG);
|
|
}
|
|
|
|
static struct ieee80211_htrateset htrateset;
|
|
|
|
const struct ieee80211_htrateset *
|
|
ieee80211_get_suphtrates(struct ieee80211com *ic,
|
|
const struct ieee80211_channel *c)
|
|
{
|
|
#define ADDRATE(x) do { \
|
|
htrateset.rs_rates[htrateset.rs_nrates] = x; \
|
|
htrateset.rs_nrates++; \
|
|
} while (0)
|
|
int i;
|
|
|
|
memset(&htrateset, 0, sizeof(struct ieee80211_htrateset));
|
|
for (i = 0; i < ic->ic_txstream * 8; i++)
|
|
ADDRATE(i);
|
|
if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
|
|
(ic->ic_htcaps & IEEE80211_HTC_TXMCS32))
|
|
ADDRATE(32);
|
|
if (ic->ic_htcaps & IEEE80211_HTC_TXUNEQUAL) {
|
|
if (ic->ic_txstream >= 2) {
|
|
for (i = 33; i <= 38; i++)
|
|
ADDRATE(i);
|
|
}
|
|
if (ic->ic_txstream >= 3) {
|
|
for (i = 39; i <= 52; i++)
|
|
ADDRATE(i);
|
|
}
|
|
if (ic->ic_txstream == 4) {
|
|
for (i = 53; i <= 76; i++)
|
|
ADDRATE(i);
|
|
}
|
|
}
|
|
return &htrateset;
|
|
#undef ADDRATE
|
|
}
|
|
|
|
/*
|
|
* Receive processing.
|
|
*/
|
|
|
|
/*
|
|
* Decap the encapsulated A-MSDU frames and dispatch all but
|
|
* the last for delivery. The last frame is returned for
|
|
* delivery via the normal path.
|
|
*/
|
|
struct mbuf *
|
|
ieee80211_decap_amsdu(struct ieee80211_node *ni, struct mbuf *m)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
int framelen;
|
|
struct mbuf *n;
|
|
|
|
/* discard 802.3 header inserted by ieee80211_decap */
|
|
m_adj(m, sizeof(struct ether_header));
|
|
|
|
vap->iv_stats.is_amsdu_decap++;
|
|
|
|
for (;;) {
|
|
/*
|
|
* Decap the first frame, bust it apart from the
|
|
* remainder and deliver. We leave the last frame
|
|
* delivery to the caller (for consistency with other
|
|
* code paths, could also do it here).
|
|
*/
|
|
m = ieee80211_decap1(m, &framelen);
|
|
if (m == NULL) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
|
|
ni->ni_macaddr, "a-msdu", "%s", "decap failed");
|
|
vap->iv_stats.is_amsdu_tooshort++;
|
|
return NULL;
|
|
}
|
|
if (m->m_pkthdr.len == framelen)
|
|
break;
|
|
n = m_split(m, framelen, M_NOWAIT);
|
|
if (n == NULL) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
|
|
ni->ni_macaddr, "a-msdu",
|
|
"%s", "unable to split encapsulated frames");
|
|
vap->iv_stats.is_amsdu_split++;
|
|
m_freem(m); /* NB: must reclaim */
|
|
return NULL;
|
|
}
|
|
vap->iv_deliver_data(vap, ni, m);
|
|
|
|
/*
|
|
* Remove frame contents; each intermediate frame
|
|
* is required to be aligned to a 4-byte boundary.
|
|
*/
|
|
m = n;
|
|
m_adj(m, roundup2(framelen, 4) - framelen); /* padding */
|
|
}
|
|
return m; /* last delivered by caller */
|
|
}
|
|
|
|
/*
|
|
* Purge all frames in the A-MPDU re-order queue.
|
|
*/
|
|
static void
|
|
ampdu_rx_purge(struct ieee80211_rx_ampdu *rap)
|
|
{
|
|
struct mbuf *m;
|
|
int i;
|
|
|
|
for (i = 0; i < rap->rxa_wnd; i++) {
|
|
m = rap->rxa_m[i];
|
|
if (m != NULL) {
|
|
rap->rxa_m[i] = NULL;
|
|
rap->rxa_qbytes -= m->m_pkthdr.len;
|
|
m_freem(m);
|
|
if (--rap->rxa_qframes == 0)
|
|
break;
|
|
}
|
|
}
|
|
KASSERT(rap->rxa_qbytes == 0 && rap->rxa_qframes == 0,
|
|
("lost %u data, %u frames on ampdu rx q",
|
|
rap->rxa_qbytes, rap->rxa_qframes));
|
|
}
|
|
|
|
/*
|
|
* Start A-MPDU rx/re-order processing for the specified TID.
|
|
*/
|
|
static int
|
|
ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
|
|
int baparamset, int batimeout, int baseqctl)
|
|
{
|
|
int bufsiz = MS(baparamset, IEEE80211_BAPS_BUFSIZ);
|
|
|
|
if (rap->rxa_flags & IEEE80211_AGGR_RUNNING) {
|
|
/*
|
|
* AMPDU previously setup and not terminated with a DELBA,
|
|
* flush the reorder q's in case anything remains.
|
|
*/
|
|
ampdu_rx_purge(rap);
|
|
}
|
|
memset(rap, 0, sizeof(*rap));
|
|
rap->rxa_wnd = (bufsiz == 0) ?
|
|
IEEE80211_AGGR_BAWMAX : min(bufsiz, IEEE80211_AGGR_BAWMAX);
|
|
rap->rxa_start = MS(baseqctl, IEEE80211_BASEQ_START);
|
|
rap->rxa_flags |= IEEE80211_AGGR_RUNNING | IEEE80211_AGGR_XCHGPEND;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Stop A-MPDU rx processing for the specified TID.
|
|
*/
|
|
static void
|
|
ampdu_rx_stop(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap)
|
|
{
|
|
|
|
ampdu_rx_purge(rap);
|
|
rap->rxa_flags &= ~(IEEE80211_AGGR_RUNNING | IEEE80211_AGGR_XCHGPEND);
|
|
}
|
|
|
|
/*
|
|
* Dispatch a frame from the A-MPDU reorder queue. The
|
|
* frame is fed back into ieee80211_input marked with an
|
|
* M_AMPDU_MPDU flag so it doesn't come back to us (it also
|
|
* permits ieee80211_input to optimize re-processing).
|
|
*/
|
|
static __inline void
|
|
ampdu_dispatch(struct ieee80211_node *ni, struct mbuf *m)
|
|
{
|
|
m->m_flags |= M_AMPDU_MPDU; /* bypass normal processing */
|
|
/* NB: rssi and noise are ignored w/ M_AMPDU_MPDU set */
|
|
(void) ieee80211_input(ni, m, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* Dispatch as many frames as possible from the re-order queue.
|
|
* Frames will always be "at the front"; we process all frames
|
|
* up to the first empty slot in the window. On completion we
|
|
* cleanup state if there are still pending frames in the current
|
|
* BA window. We assume the frame at slot 0 is already handled
|
|
* by the caller; we always start at slot 1.
|
|
*/
|
|
static void
|
|
ampdu_rx_dispatch(struct ieee80211_rx_ampdu *rap, struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct mbuf *m;
|
|
int i;
|
|
|
|
/* flush run of frames */
|
|
for (i = 1; i < rap->rxa_wnd; i++) {
|
|
m = rap->rxa_m[i];
|
|
if (m == NULL)
|
|
break;
|
|
rap->rxa_m[i] = NULL;
|
|
rap->rxa_qbytes -= m->m_pkthdr.len;
|
|
rap->rxa_qframes--;
|
|
|
|
ampdu_dispatch(ni, m);
|
|
}
|
|
/*
|
|
* If frames remain, copy the mbuf pointers down so
|
|
* they correspond to the offsets in the new window.
|
|
*/
|
|
if (rap->rxa_qframes != 0) {
|
|
int n = rap->rxa_qframes, j;
|
|
for (j = i+1; j < rap->rxa_wnd; j++) {
|
|
if (rap->rxa_m[j] != NULL) {
|
|
rap->rxa_m[j-i] = rap->rxa_m[j];
|
|
rap->rxa_m[j] = NULL;
|
|
if (--n == 0)
|
|
break;
|
|
}
|
|
}
|
|
KASSERT(n == 0, ("lost %d frames", n));
|
|
vap->iv_stats.is_ampdu_rx_copy += rap->rxa_qframes;
|
|
}
|
|
/*
|
|
* Adjust the start of the BA window to
|
|
* reflect the frames just dispatched.
|
|
*/
|
|
rap->rxa_start = IEEE80211_SEQ_ADD(rap->rxa_start, i);
|
|
vap->iv_stats.is_ampdu_rx_oor += i;
|
|
}
|
|
|
|
#ifdef IEEE80211_AMPDU_AGE
|
|
/*
|
|
* Dispatch all frames in the A-MPDU re-order queue.
|
|
*/
|
|
static void
|
|
ampdu_rx_flush(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct mbuf *m;
|
|
int i;
|
|
|
|
for (i = 0; i < rap->rxa_wnd; i++) {
|
|
m = rap->rxa_m[i];
|
|
if (m == NULL)
|
|
continue;
|
|
rap->rxa_m[i] = NULL;
|
|
rap->rxa_qbytes -= m->m_pkthdr.len;
|
|
rap->rxa_qframes--;
|
|
vap->iv_stats.is_ampdu_rx_oor++;
|
|
|
|
ampdu_dispatch(ni, m);
|
|
if (rap->rxa_qframes == 0)
|
|
break;
|
|
}
|
|
}
|
|
#endif /* IEEE80211_AMPDU_AGE */
|
|
|
|
/*
|
|
* Dispatch all frames in the A-MPDU re-order queue
|
|
* preceding the specified sequence number. This logic
|
|
* handles window moves due to a received MSDU or BAR.
|
|
*/
|
|
static void
|
|
ampdu_rx_flush_upto(struct ieee80211_node *ni,
|
|
struct ieee80211_rx_ampdu *rap, ieee80211_seq winstart)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct mbuf *m;
|
|
ieee80211_seq seqno;
|
|
int i;
|
|
|
|
/*
|
|
* Flush any complete MSDU's with a sequence number lower
|
|
* than winstart. Gaps may exist. Note that we may actually
|
|
* dispatch frames past winstart if a run continues; this is
|
|
* an optimization that avoids having to do a separate pass
|
|
* to dispatch frames after moving the BA window start.
|
|
*/
|
|
seqno = rap->rxa_start;
|
|
for (i = 0; i < rap->rxa_wnd; i++) {
|
|
m = rap->rxa_m[i];
|
|
if (m != NULL) {
|
|
rap->rxa_m[i] = NULL;
|
|
rap->rxa_qbytes -= m->m_pkthdr.len;
|
|
rap->rxa_qframes--;
|
|
vap->iv_stats.is_ampdu_rx_oor++;
|
|
|
|
ampdu_dispatch(ni, m);
|
|
} else {
|
|
if (!IEEE80211_SEQ_BA_BEFORE(seqno, winstart))
|
|
break;
|
|
}
|
|
seqno = IEEE80211_SEQ_INC(seqno);
|
|
}
|
|
/*
|
|
* If frames remain, copy the mbuf pointers down so
|
|
* they correspond to the offsets in the new window.
|
|
*/
|
|
if (rap->rxa_qframes != 0) {
|
|
int n = rap->rxa_qframes, j;
|
|
|
|
/* NB: this loop assumes i > 0 and/or rxa_m[0] is NULL */
|
|
KASSERT(rap->rxa_m[0] == NULL,
|
|
("%s: BA window slot 0 occupied", __func__));
|
|
for (j = i+1; j < rap->rxa_wnd; j++) {
|
|
if (rap->rxa_m[j] != NULL) {
|
|
rap->rxa_m[j-i] = rap->rxa_m[j];
|
|
rap->rxa_m[j] = NULL;
|
|
if (--n == 0)
|
|
break;
|
|
}
|
|
}
|
|
KASSERT(n == 0, ("%s: lost %d frames, qframes %d off %d "
|
|
"BA win <%d:%d> winstart %d",
|
|
__func__, n, rap->rxa_qframes, i, rap->rxa_start,
|
|
IEEE80211_SEQ_ADD(rap->rxa_start, rap->rxa_wnd-1),
|
|
winstart));
|
|
vap->iv_stats.is_ampdu_rx_copy += rap->rxa_qframes;
|
|
}
|
|
/*
|
|
* Move the start of the BA window; we use the
|
|
* sequence number of the last MSDU that was
|
|
* passed up the stack+1 or winstart if stopped on
|
|
* a gap in the reorder buffer.
|
|
*/
|
|
rap->rxa_start = seqno;
|
|
}
|
|
|
|
/*
|
|
* Process a received QoS data frame for an HT station. Handle
|
|
* A-MPDU reordering: if this frame is received out of order
|
|
* and falls within the BA window hold onto it. Otherwise if
|
|
* this frame completes a run, flush any pending frames. We
|
|
* return 1 if the frame is consumed. A 0 is returned if
|
|
* the frame should be processed normally by the caller.
|
|
*/
|
|
int
|
|
ieee80211_ampdu_reorder(struct ieee80211_node *ni, struct mbuf *m)
|
|
{
|
|
#define IEEE80211_FC0_QOSDATA \
|
|
(IEEE80211_FC0_TYPE_DATA|IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_VERSION_0)
|
|
#define PROCESS 0 /* caller should process frame */
|
|
#define CONSUMED 1 /* frame consumed, caller does nothing */
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_qosframe *wh;
|
|
struct ieee80211_rx_ampdu *rap;
|
|
ieee80211_seq rxseq;
|
|
uint8_t tid;
|
|
int off;
|
|
|
|
KASSERT((m->m_flags & (M_AMPDU | M_AMPDU_MPDU)) == M_AMPDU,
|
|
("!a-mpdu or already re-ordered, flags 0x%x", m->m_flags));
|
|
KASSERT(ni->ni_flags & IEEE80211_NODE_HT, ("not an HT sta"));
|
|
|
|
/* NB: m_len known to be sufficient */
|
|
wh = mtod(m, struct ieee80211_qosframe *);
|
|
if (wh->i_fc[0] != IEEE80211_FC0_QOSDATA) {
|
|
/*
|
|
* Not QoS data, shouldn't get here but just
|
|
* return it to the caller for processing.
|
|
*/
|
|
return PROCESS;
|
|
}
|
|
if (IEEE80211_IS_DSTODS(wh))
|
|
tid = ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0];
|
|
else
|
|
tid = wh->i_qos[0];
|
|
tid &= IEEE80211_QOS_TID;
|
|
rap = &ni->ni_rx_ampdu[tid];
|
|
if ((rap->rxa_flags & IEEE80211_AGGR_XCHGPEND) == 0) {
|
|
/*
|
|
* No ADDBA request yet, don't touch.
|
|
*/
|
|
return PROCESS;
|
|
}
|
|
rxseq = le16toh(*(uint16_t *)wh->i_seq);
|
|
if ((rxseq & IEEE80211_SEQ_FRAG_MASK) != 0) {
|
|
/*
|
|
* Fragments are not allowed; toss.
|
|
*/
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_INPUT | IEEE80211_MSG_11N, ni->ni_macaddr,
|
|
"A-MPDU", "fragment, rxseq 0x%x tid %u%s", rxseq, tid,
|
|
wh->i_fc[1] & IEEE80211_FC1_RETRY ? " (retransmit)" : "");
|
|
vap->iv_stats.is_ampdu_rx_drop++;
|
|
IEEE80211_NODE_STAT(ni, rx_drop);
|
|
m_freem(m);
|
|
return CONSUMED;
|
|
}
|
|
rxseq >>= IEEE80211_SEQ_SEQ_SHIFT;
|
|
rap->rxa_nframes++;
|
|
again:
|
|
if (rxseq == rap->rxa_start) {
|
|
/*
|
|
* First frame in window.
|
|
*/
|
|
if (rap->rxa_qframes != 0) {
|
|
/*
|
|
* Dispatch as many packets as we can.
|
|
*/
|
|
KASSERT(rap->rxa_m[0] == NULL, ("unexpected dup"));
|
|
ampdu_dispatch(ni, m);
|
|
ampdu_rx_dispatch(rap, ni);
|
|
return CONSUMED;
|
|
} else {
|
|
/*
|
|
* In order; advance window and notify
|
|
* caller to dispatch directly.
|
|
*/
|
|
rap->rxa_start = IEEE80211_SEQ_INC(rxseq);
|
|
return PROCESS;
|
|
}
|
|
}
|
|
/*
|
|
* Frame is out of order; store if in the BA window.
|
|
*/
|
|
/* calculate offset in BA window */
|
|
off = IEEE80211_SEQ_SUB(rxseq, rap->rxa_start);
|
|
if (off < rap->rxa_wnd) {
|
|
/*
|
|
* Common case (hopefully): in the BA window.
|
|
* Sec 9.10.7.6.2 a) (p.137)
|
|
*/
|
|
#ifdef IEEE80211_AMPDU_AGE
|
|
/*
|
|
* Check for frames sitting too long in the reorder queue.
|
|
* This should only ever happen if frames are not delivered
|
|
* without the sender otherwise notifying us (e.g. with a
|
|
* BAR to move the window). Typically this happens because
|
|
* of vendor bugs that cause the sequence number to jump.
|
|
* When this happens we get a gap in the reorder queue that
|
|
* leaves frame sitting on the queue until they get pushed
|
|
* out due to window moves. When the vendor does not send
|
|
* BAR this move only happens due to explicit packet sends
|
|
*
|
|
* NB: we only track the time of the oldest frame in the
|
|
* reorder q; this means that if we flush we might push
|
|
* frames that still "new"; if this happens then subsequent
|
|
* frames will result in BA window moves which cost something
|
|
* but is still better than a big throughput dip.
|
|
*/
|
|
if (rap->rxa_qframes != 0) {
|
|
/* XXX honor batimeout? */
|
|
if (ticks - rap->rxa_age > ieee80211_ampdu_age) {
|
|
/*
|
|
* Too long since we received the first
|
|
* frame; flush the reorder buffer.
|
|
*/
|
|
if (rap->rxa_qframes != 0) {
|
|
vap->iv_stats.is_ampdu_rx_age +=
|
|
rap->rxa_qframes;
|
|
ampdu_rx_flush(ni, rap);
|
|
}
|
|
rap->rxa_start = IEEE80211_SEQ_INC(rxseq);
|
|
return PROCESS;
|
|
}
|
|
} else {
|
|
/*
|
|
* First frame, start aging timer.
|
|
*/
|
|
rap->rxa_age = ticks;
|
|
}
|
|
#endif /* IEEE80211_AMPDU_AGE */
|
|
/* save packet */
|
|
if (rap->rxa_m[off] == NULL) {
|
|
rap->rxa_m[off] = m;
|
|
rap->rxa_qframes++;
|
|
rap->rxa_qbytes += m->m_pkthdr.len;
|
|
vap->iv_stats.is_ampdu_rx_reorder++;
|
|
} else {
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_INPUT | IEEE80211_MSG_11N,
|
|
ni->ni_macaddr, "a-mpdu duplicate",
|
|
"seqno %u tid %u BA win <%u:%u>",
|
|
rxseq, tid, rap->rxa_start,
|
|
IEEE80211_SEQ_ADD(rap->rxa_start, rap->rxa_wnd-1));
|
|
vap->iv_stats.is_rx_dup++;
|
|
IEEE80211_NODE_STAT(ni, rx_dup);
|
|
m_freem(m);
|
|
}
|
|
return CONSUMED;
|
|
}
|
|
if (off < IEEE80211_SEQ_BA_RANGE) {
|
|
/*
|
|
* Outside the BA window, but within range;
|
|
* flush the reorder q and move the window.
|
|
* Sec 9.10.7.6.2 b) (p.138)
|
|
*/
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_11N, ni,
|
|
"move BA win <%u:%u> (%u frames) rxseq %u tid %u",
|
|
rap->rxa_start,
|
|
IEEE80211_SEQ_ADD(rap->rxa_start, rap->rxa_wnd-1),
|
|
rap->rxa_qframes, rxseq, tid);
|
|
vap->iv_stats.is_ampdu_rx_move++;
|
|
|
|
/*
|
|
* The spec says to flush frames up to but not including:
|
|
* WinStart_B = rxseq - rap->rxa_wnd + 1
|
|
* Then insert the frame or notify the caller to process
|
|
* it immediately. We can safely do this by just starting
|
|
* over again because we know the frame will now be within
|
|
* the BA window.
|
|
*/
|
|
/* NB: rxa_wnd known to be >0 */
|
|
ampdu_rx_flush_upto(ni, rap,
|
|
IEEE80211_SEQ_SUB(rxseq, rap->rxa_wnd-1));
|
|
goto again;
|
|
} else {
|
|
/*
|
|
* Outside the BA window and out of range; toss.
|
|
* Sec 9.10.7.6.2 c) (p.138)
|
|
*/
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_INPUT | IEEE80211_MSG_11N, ni->ni_macaddr,
|
|
"MPDU", "BA win <%u:%u> (%u frames) rxseq %u tid %u%s",
|
|
rap->rxa_start,
|
|
IEEE80211_SEQ_ADD(rap->rxa_start, rap->rxa_wnd-1),
|
|
rap->rxa_qframes, rxseq, tid,
|
|
wh->i_fc[1] & IEEE80211_FC1_RETRY ? " (retransmit)" : "");
|
|
vap->iv_stats.is_ampdu_rx_drop++;
|
|
IEEE80211_NODE_STAT(ni, rx_drop);
|
|
m_freem(m);
|
|
return CONSUMED;
|
|
}
|
|
#undef CONSUMED
|
|
#undef PROCESS
|
|
#undef IEEE80211_FC0_QOSDATA
|
|
}
|
|
|
|
/*
|
|
* Process a BAR ctl frame. Dispatch all frames up to
|
|
* the sequence number of the frame. If this frame is
|
|
* out of range it's discarded.
|
|
*/
|
|
void
|
|
ieee80211_recv_bar(struct ieee80211_node *ni, struct mbuf *m0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_frame_bar *wh;
|
|
struct ieee80211_rx_ampdu *rap;
|
|
ieee80211_seq rxseq;
|
|
int tid, off;
|
|
|
|
if (!ieee80211_recv_bar_ena) {
|
|
#if 0
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_11N,
|
|
ni->ni_macaddr, "BAR", "%s", "processing disabled");
|
|
#endif
|
|
vap->iv_stats.is_ampdu_bar_bad++;
|
|
return;
|
|
}
|
|
wh = mtod(m0, struct ieee80211_frame_bar *);
|
|
/* XXX check basic BAR */
|
|
tid = MS(le16toh(wh->i_ctl), IEEE80211_BAR_TID);
|
|
rap = &ni->ni_rx_ampdu[tid];
|
|
if ((rap->rxa_flags & IEEE80211_AGGR_XCHGPEND) == 0) {
|
|
/*
|
|
* No ADDBA request yet, don't touch.
|
|
*/
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_INPUT | IEEE80211_MSG_11N,
|
|
ni->ni_macaddr, "BAR", "no BA stream, tid %u", tid);
|
|
vap->iv_stats.is_ampdu_bar_bad++;
|
|
return;
|
|
}
|
|
vap->iv_stats.is_ampdu_bar_rx++;
|
|
rxseq = le16toh(wh->i_seq) >> IEEE80211_SEQ_SEQ_SHIFT;
|
|
if (rxseq == rap->rxa_start)
|
|
return;
|
|
/* calculate offset in BA window */
|
|
off = IEEE80211_SEQ_SUB(rxseq, rap->rxa_start);
|
|
if (off < IEEE80211_SEQ_BA_RANGE) {
|
|
/*
|
|
* Flush the reorder q up to rxseq and move the window.
|
|
* Sec 9.10.7.6.3 a) (p.138)
|
|
*/
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_11N, ni,
|
|
"BAR moves BA win <%u:%u> (%u frames) rxseq %u tid %u",
|
|
rap->rxa_start,
|
|
IEEE80211_SEQ_ADD(rap->rxa_start, rap->rxa_wnd-1),
|
|
rap->rxa_qframes, rxseq, tid);
|
|
vap->iv_stats.is_ampdu_bar_move++;
|
|
|
|
ampdu_rx_flush_upto(ni, rap, rxseq);
|
|
if (off >= rap->rxa_wnd) {
|
|
/*
|
|
* BAR specifies a window start to the right of BA
|
|
* window; we must move it explicitly since
|
|
* ampdu_rx_flush_upto will not.
|
|
*/
|
|
rap->rxa_start = rxseq;
|
|
}
|
|
} else {
|
|
/*
|
|
* Out of range; toss.
|
|
* Sec 9.10.7.6.3 b) (p.138)
|
|
*/
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_INPUT | IEEE80211_MSG_11N, ni->ni_macaddr,
|
|
"BAR", "BA win <%u:%u> (%u frames) rxseq %u tid %u%s",
|
|
rap->rxa_start,
|
|
IEEE80211_SEQ_ADD(rap->rxa_start, rap->rxa_wnd-1),
|
|
rap->rxa_qframes, rxseq, tid,
|
|
wh->i_fc[1] & IEEE80211_FC1_RETRY ? " (retransmit)" : "");
|
|
vap->iv_stats.is_ampdu_bar_oow++;
|
|
IEEE80211_NODE_STAT(ni, rx_drop);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Setup HT-specific state in a node. Called only
|
|
* when HT use is negotiated so we don't do extra
|
|
* work for temporary and/or legacy sta's.
|
|
*/
|
|
void
|
|
ieee80211_ht_node_init(struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211_tx_ampdu *tap;
|
|
int tid;
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni,
|
|
"%s: called",
|
|
__func__);
|
|
|
|
if (ni->ni_flags & IEEE80211_NODE_HT) {
|
|
/*
|
|
* Clean AMPDU state on re-associate. This handles the case
|
|
* where a station leaves w/o notifying us and then returns
|
|
* before node is reaped for inactivity.
|
|
*/
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni,
|
|
"%s: calling cleanup",
|
|
__func__);
|
|
ieee80211_ht_node_cleanup(ni);
|
|
}
|
|
for (tid = 0; tid < WME_NUM_TID; tid++) {
|
|
tap = &ni->ni_tx_ampdu[tid];
|
|
tap->txa_tid = tid;
|
|
tap->txa_ni = ni;
|
|
/* NB: further initialization deferred */
|
|
}
|
|
ni->ni_flags |= IEEE80211_NODE_HT | IEEE80211_NODE_AMPDU;
|
|
}
|
|
|
|
/*
|
|
* Cleanup HT-specific state in a node. Called only
|
|
* when HT use has been marked.
|
|
*/
|
|
void
|
|
ieee80211_ht_node_cleanup(struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
int i;
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni,
|
|
"%s: called",
|
|
__func__);
|
|
|
|
KASSERT(ni->ni_flags & IEEE80211_NODE_HT, ("not an HT node"));
|
|
|
|
/* XXX optimize this */
|
|
for (i = 0; i < WME_NUM_TID; i++) {
|
|
struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[i];
|
|
if (tap->txa_flags & IEEE80211_AGGR_SETUP)
|
|
ampdu_tx_stop(tap);
|
|
}
|
|
for (i = 0; i < WME_NUM_TID; i++)
|
|
ic->ic_ampdu_rx_stop(ni, &ni->ni_rx_ampdu[i]);
|
|
|
|
ni->ni_htcap = 0;
|
|
ni->ni_flags &= ~IEEE80211_NODE_HT_ALL;
|
|
}
|
|
|
|
/*
|
|
* Age out HT resources for a station.
|
|
*/
|
|
void
|
|
ieee80211_ht_node_age(struct ieee80211_node *ni)
|
|
{
|
|
#ifdef IEEE80211_AMPDU_AGE
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
uint8_t tid;
|
|
#endif
|
|
|
|
KASSERT(ni->ni_flags & IEEE80211_NODE_HT, ("not an HT sta"));
|
|
|
|
#ifdef IEEE80211_AMPDU_AGE
|
|
for (tid = 0; tid < WME_NUM_TID; tid++) {
|
|
struct ieee80211_rx_ampdu *rap;
|
|
|
|
rap = &ni->ni_rx_ampdu[tid];
|
|
if ((rap->rxa_flags & IEEE80211_AGGR_XCHGPEND) == 0)
|
|
continue;
|
|
if (rap->rxa_qframes == 0)
|
|
continue;
|
|
/*
|
|
* Check for frames sitting too long in the reorder queue.
|
|
* See above for more details on what's happening here.
|
|
*/
|
|
/* XXX honor batimeout? */
|
|
if (ticks - rap->rxa_age > ieee80211_ampdu_age) {
|
|
/*
|
|
* Too long since we received the first
|
|
* frame; flush the reorder buffer.
|
|
*/
|
|
vap->iv_stats.is_ampdu_rx_age += rap->rxa_qframes;
|
|
ampdu_rx_flush(ni, rap);
|
|
}
|
|
}
|
|
#endif /* IEEE80211_AMPDU_AGE */
|
|
}
|
|
|
|
static struct ieee80211_channel *
|
|
findhtchan(struct ieee80211com *ic, struct ieee80211_channel *c, int htflags)
|
|
{
|
|
return ieee80211_find_channel(ic, c->ic_freq,
|
|
(c->ic_flags &~ IEEE80211_CHAN_HT) | htflags);
|
|
}
|
|
|
|
/*
|
|
* Adjust a channel to be HT/non-HT according to the vap's configuration.
|
|
*/
|
|
struct ieee80211_channel *
|
|
ieee80211_ht_adjust_channel(struct ieee80211com *ic,
|
|
struct ieee80211_channel *chan, int flags)
|
|
{
|
|
struct ieee80211_channel *c;
|
|
|
|
if (flags & IEEE80211_FHT_HT) {
|
|
/* promote to HT if possible */
|
|
if (flags & IEEE80211_FHT_USEHT40) {
|
|
if (!IEEE80211_IS_CHAN_HT40(chan)) {
|
|
/* NB: arbitrarily pick ht40+ over ht40- */
|
|
c = findhtchan(ic, chan, IEEE80211_CHAN_HT40U);
|
|
if (c == NULL)
|
|
c = findhtchan(ic, chan,
|
|
IEEE80211_CHAN_HT40D);
|
|
if (c == NULL)
|
|
c = findhtchan(ic, chan,
|
|
IEEE80211_CHAN_HT20);
|
|
if (c != NULL)
|
|
chan = c;
|
|
}
|
|
} else if (!IEEE80211_IS_CHAN_HT20(chan)) {
|
|
c = findhtchan(ic, chan, IEEE80211_CHAN_HT20);
|
|
if (c != NULL)
|
|
chan = c;
|
|
}
|
|
} else if (IEEE80211_IS_CHAN_HT(chan)) {
|
|
/* demote to legacy, HT use is disabled */
|
|
c = ieee80211_find_channel(ic, chan->ic_freq,
|
|
chan->ic_flags &~ IEEE80211_CHAN_HT);
|
|
if (c != NULL)
|
|
chan = c;
|
|
}
|
|
return chan;
|
|
}
|
|
|
|
/*
|
|
* Setup HT-specific state for a legacy WDS peer.
|
|
*/
|
|
void
|
|
ieee80211_ht_wds_init(struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_tx_ampdu *tap;
|
|
int tid;
|
|
|
|
KASSERT(vap->iv_flags_ht & IEEE80211_FHT_HT, ("no HT requested"));
|
|
|
|
/* XXX check scan cache in case peer has an ap and we have info */
|
|
/*
|
|
* If setup with a legacy channel; locate an HT channel.
|
|
* Otherwise if the inherited channel (from a companion
|
|
* AP) is suitable use it so we use the same location
|
|
* for the extension channel).
|
|
*/
|
|
ni->ni_chan = ieee80211_ht_adjust_channel(ni->ni_ic,
|
|
ni->ni_chan, ieee80211_htchanflags(ni->ni_chan));
|
|
|
|
ni->ni_htcap = 0;
|
|
if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20)
|
|
ni->ni_htcap |= IEEE80211_HTCAP_SHORTGI20;
|
|
if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
|
|
ni->ni_htcap |= IEEE80211_HTCAP_CHWIDTH40;
|
|
ni->ni_chw = 40;
|
|
if (IEEE80211_IS_CHAN_HT40U(ni->ni_chan))
|
|
ni->ni_ht2ndchan = IEEE80211_HTINFO_2NDCHAN_ABOVE;
|
|
else if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
|
|
ni->ni_ht2ndchan = IEEE80211_HTINFO_2NDCHAN_BELOW;
|
|
if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40)
|
|
ni->ni_htcap |= IEEE80211_HTCAP_SHORTGI40;
|
|
} else {
|
|
ni->ni_chw = 20;
|
|
ni->ni_ht2ndchan = IEEE80211_HTINFO_2NDCHAN_NONE;
|
|
}
|
|
ni->ni_htctlchan = ni->ni_chan->ic_ieee;
|
|
if (vap->iv_flags_ht & IEEE80211_FHT_RIFS)
|
|
ni->ni_flags |= IEEE80211_NODE_RIFS;
|
|
/* XXX does it make sense to enable SMPS? */
|
|
|
|
ni->ni_htopmode = 0; /* XXX need protection state */
|
|
ni->ni_htstbc = 0; /* XXX need info */
|
|
|
|
for (tid = 0; tid < WME_NUM_TID; tid++) {
|
|
tap = &ni->ni_tx_ampdu[tid];
|
|
tap->txa_tid = tid;
|
|
}
|
|
/* NB: AMPDU tx/rx governed by IEEE80211_FHT_AMPDU_{TX,RX} */
|
|
ni->ni_flags |= IEEE80211_NODE_HT | IEEE80211_NODE_AMPDU;
|
|
}
|
|
|
|
/*
|
|
* Notify hostap vaps of a change in the HTINFO ie.
|
|
*/
|
|
static void
|
|
htinfo_notify(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
int first = 1;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
if (vap->iv_opmode != IEEE80211_M_HOSTAP)
|
|
continue;
|
|
if (vap->iv_state != IEEE80211_S_RUN ||
|
|
!IEEE80211_IS_CHAN_HT(vap->iv_bss->ni_chan))
|
|
continue;
|
|
if (first) {
|
|
IEEE80211_NOTE(vap,
|
|
IEEE80211_MSG_ASSOC | IEEE80211_MSG_11N,
|
|
vap->iv_bss,
|
|
"HT bss occupancy change: %d sta, %d ht, "
|
|
"%d ht40%s, HT protmode now 0x%x"
|
|
, ic->ic_sta_assoc
|
|
, ic->ic_ht_sta_assoc
|
|
, ic->ic_ht40_sta_assoc
|
|
, (ic->ic_flags_ht & IEEE80211_FHT_NONHT_PR) ?
|
|
", non-HT sta present" : ""
|
|
, ic->ic_curhtprotmode);
|
|
first = 0;
|
|
}
|
|
ieee80211_beacon_notify(vap, IEEE80211_BEACON_HTINFO);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Calculate HT protection mode from current
|
|
* state and handle updates.
|
|
*/
|
|
static void
|
|
htinfo_update(struct ieee80211com *ic)
|
|
{
|
|
uint8_t protmode;
|
|
|
|
if (ic->ic_sta_assoc != ic->ic_ht_sta_assoc) {
|
|
protmode = IEEE80211_HTINFO_OPMODE_MIXED
|
|
| IEEE80211_HTINFO_NONHT_PRESENT;
|
|
} else if (ic->ic_flags_ht & IEEE80211_FHT_NONHT_PR) {
|
|
protmode = IEEE80211_HTINFO_OPMODE_PROTOPT
|
|
| IEEE80211_HTINFO_NONHT_PRESENT;
|
|
} else if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
|
|
IEEE80211_IS_CHAN_HT40(ic->ic_bsschan) &&
|
|
ic->ic_sta_assoc != ic->ic_ht40_sta_assoc) {
|
|
protmode = IEEE80211_HTINFO_OPMODE_HT20PR;
|
|
} else {
|
|
protmode = IEEE80211_HTINFO_OPMODE_PURE;
|
|
}
|
|
if (protmode != ic->ic_curhtprotmode) {
|
|
ic->ic_curhtprotmode = protmode;
|
|
htinfo_notify(ic);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle an HT station joining a BSS.
|
|
*/
|
|
void
|
|
ieee80211_ht_node_join(struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
if (ni->ni_flags & IEEE80211_NODE_HT) {
|
|
ic->ic_ht_sta_assoc++;
|
|
if (ni->ni_chw == 40)
|
|
ic->ic_ht40_sta_assoc++;
|
|
}
|
|
htinfo_update(ic);
|
|
}
|
|
|
|
/*
|
|
* Handle an HT station leaving a BSS.
|
|
*/
|
|
void
|
|
ieee80211_ht_node_leave(struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
if (ni->ni_flags & IEEE80211_NODE_HT) {
|
|
ic->ic_ht_sta_assoc--;
|
|
if (ni->ni_chw == 40)
|
|
ic->ic_ht40_sta_assoc--;
|
|
}
|
|
htinfo_update(ic);
|
|
}
|
|
|
|
/*
|
|
* Public version of htinfo_update; used for processing
|
|
* beacon frames from overlapping bss.
|
|
*
|
|
* Caller can specify either IEEE80211_HTINFO_OPMODE_MIXED
|
|
* (on receipt of a beacon that advertises MIXED) or
|
|
* IEEE80211_HTINFO_OPMODE_PROTOPT (on receipt of a beacon
|
|
* from an overlapping legacy bss). We treat MIXED with
|
|
* a higher precedence than PROTOPT (i.e. we will not change
|
|
* change PROTOPT -> MIXED; only MIXED -> PROTOPT). This
|
|
* corresponds to how we handle things in htinfo_update.
|
|
*/
|
|
void
|
|
ieee80211_htprot_update(struct ieee80211com *ic, int protmode)
|
|
{
|
|
#define OPMODE(x) SM(x, IEEE80211_HTINFO_OPMODE)
|
|
IEEE80211_LOCK(ic);
|
|
|
|
/* track non-HT station presence */
|
|
KASSERT(protmode & IEEE80211_HTINFO_NONHT_PRESENT,
|
|
("protmode 0x%x", protmode));
|
|
ic->ic_flags_ht |= IEEE80211_FHT_NONHT_PR;
|
|
ic->ic_lastnonht = ticks;
|
|
|
|
if (protmode != ic->ic_curhtprotmode &&
|
|
(OPMODE(ic->ic_curhtprotmode) != IEEE80211_HTINFO_OPMODE_MIXED ||
|
|
OPMODE(protmode) == IEEE80211_HTINFO_OPMODE_PROTOPT)) {
|
|
/* push beacon update */
|
|
ic->ic_curhtprotmode = protmode;
|
|
htinfo_notify(ic);
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
#undef OPMODE
|
|
}
|
|
|
|
/*
|
|
* Time out presence of an overlapping bss with non-HT
|
|
* stations. When operating in hostap mode we listen for
|
|
* beacons from other stations and if we identify a non-HT
|
|
* station is present we update the opmode field of the
|
|
* HTINFO ie. To identify when all non-HT stations are
|
|
* gone we time out this condition.
|
|
*/
|
|
void
|
|
ieee80211_ht_timeout(struct ieee80211com *ic)
|
|
{
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
if ((ic->ic_flags_ht & IEEE80211_FHT_NONHT_PR) &&
|
|
time_after(ticks, ic->ic_lastnonht + IEEE80211_NONHT_PRESENT_AGE)) {
|
|
#if 0
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_11N, ni,
|
|
"%s", "time out non-HT STA present on channel");
|
|
#endif
|
|
ic->ic_flags_ht &= ~IEEE80211_FHT_NONHT_PR;
|
|
htinfo_update(ic);
|
|
}
|
|
}
|
|
|
|
/* unalligned little endian access */
|
|
#define LE_READ_2(p) \
|
|
((uint16_t) \
|
|
((((const uint8_t *)(p))[0] ) | \
|
|
(((const uint8_t *)(p))[1] << 8)))
|
|
|
|
/*
|
|
* Process an 802.11n HT capabilities ie.
|
|
*/
|
|
void
|
|
ieee80211_parse_htcap(struct ieee80211_node *ni, const uint8_t *ie)
|
|
{
|
|
if (ie[0] == IEEE80211_ELEMID_VENDOR) {
|
|
/*
|
|
* Station used Vendor OUI ie to associate;
|
|
* mark the node so when we respond we'll use
|
|
* the Vendor OUI's and not the standard ie's.
|
|
*/
|
|
ni->ni_flags |= IEEE80211_NODE_HTCOMPAT;
|
|
ie += 4;
|
|
} else
|
|
ni->ni_flags &= ~IEEE80211_NODE_HTCOMPAT;
|
|
|
|
ni->ni_htcap = LE_READ_2(ie +
|
|
__offsetof(struct ieee80211_ie_htcap, hc_cap));
|
|
ni->ni_htparam = ie[__offsetof(struct ieee80211_ie_htcap, hc_param)];
|
|
}
|
|
|
|
static void
|
|
htinfo_parse(struct ieee80211_node *ni,
|
|
const struct ieee80211_ie_htinfo *htinfo)
|
|
{
|
|
uint16_t w;
|
|
|
|
ni->ni_htctlchan = htinfo->hi_ctrlchannel;
|
|
ni->ni_ht2ndchan = SM(htinfo->hi_byte1, IEEE80211_HTINFO_2NDCHAN);
|
|
w = LE_READ_2(&htinfo->hi_byte2);
|
|
ni->ni_htopmode = SM(w, IEEE80211_HTINFO_OPMODE);
|
|
w = LE_READ_2(&htinfo->hi_byte45);
|
|
ni->ni_htstbc = SM(w, IEEE80211_HTINFO_BASIC_STBCMCS);
|
|
}
|
|
|
|
/*
|
|
* Parse an 802.11n HT info ie and save useful information
|
|
* to the node state. Note this does not effect any state
|
|
* changes such as for channel width change.
|
|
*/
|
|
void
|
|
ieee80211_parse_htinfo(struct ieee80211_node *ni, const uint8_t *ie)
|
|
{
|
|
if (ie[0] == IEEE80211_ELEMID_VENDOR)
|
|
ie += 4;
|
|
htinfo_parse(ni, (const struct ieee80211_ie_htinfo *) ie);
|
|
}
|
|
|
|
/*
|
|
* Handle 11n channel switch. Use the received HT ie's to
|
|
* identify the right channel to use. If we cannot locate it
|
|
* in the channel table then fallback to legacy operation.
|
|
* Note that we use this information to identify the node's
|
|
* channel only; the caller is responsible for insuring any
|
|
* required channel change is done (e.g. in sta mode when
|
|
* parsing the contents of a beacon frame).
|
|
*/
|
|
static int
|
|
htinfo_update_chw(struct ieee80211_node *ni, int htflags)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211_channel *c;
|
|
int chanflags;
|
|
int ret = 0;
|
|
|
|
chanflags = (ni->ni_chan->ic_flags &~ IEEE80211_CHAN_HT) | htflags;
|
|
if (chanflags != ni->ni_chan->ic_flags) {
|
|
/* XXX not right for ht40- */
|
|
c = ieee80211_find_channel(ic, ni->ni_chan->ic_freq, chanflags);
|
|
if (c == NULL && (htflags & IEEE80211_CHAN_HT40)) {
|
|
/*
|
|
* No HT40 channel entry in our table; fall back
|
|
* to HT20 operation. This should not happen.
|
|
*/
|
|
c = findhtchan(ic, ni->ni_chan, IEEE80211_CHAN_HT20);
|
|
#if 0
|
|
IEEE80211_NOTE(ni->ni_vap,
|
|
IEEE80211_MSG_ASSOC | IEEE80211_MSG_11N, ni,
|
|
"no HT40 channel (freq %u), falling back to HT20",
|
|
ni->ni_chan->ic_freq);
|
|
#endif
|
|
/* XXX stat */
|
|
}
|
|
if (c != NULL && c != ni->ni_chan) {
|
|
IEEE80211_NOTE(ni->ni_vap,
|
|
IEEE80211_MSG_ASSOC | IEEE80211_MSG_11N, ni,
|
|
"switch station to HT%d channel %u/0x%x",
|
|
IEEE80211_IS_CHAN_HT40(c) ? 40 : 20,
|
|
c->ic_freq, c->ic_flags);
|
|
ni->ni_chan = c;
|
|
ret = 1;
|
|
}
|
|
/* NB: caller responsible for forcing any channel change */
|
|
}
|
|
/* update node's tx channel width */
|
|
ni->ni_chw = IEEE80211_IS_CHAN_HT40(ni->ni_chan)? 40 : 20;
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Update 11n MIMO PS state according to received htcap.
|
|
*/
|
|
static __inline int
|
|
htcap_update_mimo_ps(struct ieee80211_node *ni)
|
|
{
|
|
uint16_t oflags = ni->ni_flags;
|
|
|
|
switch (ni->ni_htcap & IEEE80211_HTCAP_SMPS) {
|
|
case IEEE80211_HTCAP_SMPS_DYNAMIC:
|
|
ni->ni_flags |= IEEE80211_NODE_MIMO_PS;
|
|
ni->ni_flags |= IEEE80211_NODE_MIMO_RTS;
|
|
break;
|
|
case IEEE80211_HTCAP_SMPS_ENA:
|
|
ni->ni_flags |= IEEE80211_NODE_MIMO_PS;
|
|
ni->ni_flags &= ~IEEE80211_NODE_MIMO_RTS;
|
|
break;
|
|
case IEEE80211_HTCAP_SMPS_OFF:
|
|
default: /* disable on rx of reserved value */
|
|
ni->ni_flags &= ~IEEE80211_NODE_MIMO_PS;
|
|
ni->ni_flags &= ~IEEE80211_NODE_MIMO_RTS;
|
|
break;
|
|
}
|
|
return (oflags ^ ni->ni_flags);
|
|
}
|
|
|
|
/*
|
|
* Update short GI state according to received htcap
|
|
* and local settings.
|
|
*/
|
|
static __inline void
|
|
htcap_update_shortgi(struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
|
|
ni->ni_flags &= ~(IEEE80211_NODE_SGI20|IEEE80211_NODE_SGI40);
|
|
if ((ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20) &&
|
|
(vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20))
|
|
ni->ni_flags |= IEEE80211_NODE_SGI20;
|
|
if ((ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40) &&
|
|
(vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40))
|
|
ni->ni_flags |= IEEE80211_NODE_SGI40;
|
|
}
|
|
|
|
/*
|
|
* Parse and update HT-related state extracted from
|
|
* the HT cap and info ie's.
|
|
*/
|
|
int
|
|
ieee80211_ht_updateparams(struct ieee80211_node *ni,
|
|
const uint8_t *htcapie, const uint8_t *htinfoie)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
const struct ieee80211_ie_htinfo *htinfo;
|
|
int htflags;
|
|
int ret = 0;
|
|
|
|
ieee80211_parse_htcap(ni, htcapie);
|
|
if (vap->iv_htcaps & IEEE80211_HTCAP_SMPS)
|
|
htcap_update_mimo_ps(ni);
|
|
htcap_update_shortgi(ni);
|
|
|
|
if (htinfoie[0] == IEEE80211_ELEMID_VENDOR)
|
|
htinfoie += 4;
|
|
htinfo = (const struct ieee80211_ie_htinfo *) htinfoie;
|
|
htinfo_parse(ni, htinfo);
|
|
|
|
htflags = (vap->iv_flags_ht & IEEE80211_FHT_HT) ?
|
|
IEEE80211_CHAN_HT20 : 0;
|
|
/* NB: honor operating mode constraint */
|
|
if ((htinfo->hi_byte1 & IEEE80211_HTINFO_TXWIDTH_2040) &&
|
|
(vap->iv_flags_ht & IEEE80211_FHT_USEHT40)) {
|
|
if (ni->ni_ht2ndchan == IEEE80211_HTINFO_2NDCHAN_ABOVE)
|
|
htflags = IEEE80211_CHAN_HT40U;
|
|
else if (ni->ni_ht2ndchan == IEEE80211_HTINFO_2NDCHAN_BELOW)
|
|
htflags = IEEE80211_CHAN_HT40D;
|
|
}
|
|
if (htinfo_update_chw(ni, htflags))
|
|
ret = 1;
|
|
|
|
if ((htinfo->hi_byte1 & IEEE80211_HTINFO_RIFSMODE_PERM) &&
|
|
(vap->iv_flags_ht & IEEE80211_FHT_RIFS))
|
|
ni->ni_flags |= IEEE80211_NODE_RIFS;
|
|
else
|
|
ni->ni_flags &= ~IEEE80211_NODE_RIFS;
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Parse and update HT-related state extracted from the HT cap ie
|
|
* for a station joining an HT BSS.
|
|
*/
|
|
void
|
|
ieee80211_ht_updatehtcap(struct ieee80211_node *ni, const uint8_t *htcapie)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
int htflags;
|
|
|
|
ieee80211_parse_htcap(ni, htcapie);
|
|
if (vap->iv_htcaps & IEEE80211_HTCAP_SMPS)
|
|
htcap_update_mimo_ps(ni);
|
|
htcap_update_shortgi(ni);
|
|
|
|
/* NB: honor operating mode constraint */
|
|
/* XXX 40 MHz intolerant */
|
|
htflags = (vap->iv_flags_ht & IEEE80211_FHT_HT) ?
|
|
IEEE80211_CHAN_HT20 : 0;
|
|
if ((ni->ni_htcap & IEEE80211_HTCAP_CHWIDTH40) &&
|
|
(vap->iv_flags_ht & IEEE80211_FHT_USEHT40)) {
|
|
if (IEEE80211_IS_CHAN_HT40U(vap->iv_bss->ni_chan))
|
|
htflags = IEEE80211_CHAN_HT40U;
|
|
else if (IEEE80211_IS_CHAN_HT40D(vap->iv_bss->ni_chan))
|
|
htflags = IEEE80211_CHAN_HT40D;
|
|
}
|
|
(void) htinfo_update_chw(ni, htflags);
|
|
}
|
|
|
|
/*
|
|
* Install received HT rate set by parsing the HT cap ie.
|
|
*/
|
|
int
|
|
ieee80211_setup_htrates(struct ieee80211_node *ni, const uint8_t *ie, int flags)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
const struct ieee80211_ie_htcap *htcap;
|
|
struct ieee80211_htrateset *rs;
|
|
int i, maxequalmcs, maxunequalmcs;
|
|
|
|
maxequalmcs = ic->ic_txstream * 8 - 1;
|
|
if (ic->ic_htcaps & IEEE80211_HTC_TXUNEQUAL) {
|
|
if (ic->ic_txstream >= 2)
|
|
maxunequalmcs = 38;
|
|
if (ic->ic_txstream >= 3)
|
|
maxunequalmcs = 52;
|
|
if (ic->ic_txstream >= 4)
|
|
maxunequalmcs = 76;
|
|
} else
|
|
maxunequalmcs = 0;
|
|
|
|
rs = &ni->ni_htrates;
|
|
memset(rs, 0, sizeof(*rs));
|
|
if (ie != NULL) {
|
|
if (ie[0] == IEEE80211_ELEMID_VENDOR)
|
|
ie += 4;
|
|
htcap = (const struct ieee80211_ie_htcap *) ie;
|
|
for (i = 0; i < IEEE80211_HTRATE_MAXSIZE; i++) {
|
|
if (isclr(htcap->hc_mcsset, i))
|
|
continue;
|
|
if (rs->rs_nrates == IEEE80211_HTRATE_MAXSIZE) {
|
|
IEEE80211_NOTE(vap,
|
|
IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni,
|
|
"WARNING, HT rate set too large; only "
|
|
"using %u rates", IEEE80211_HTRATE_MAXSIZE);
|
|
vap->iv_stats.is_rx_rstoobig++;
|
|
break;
|
|
}
|
|
if (i <= 31 && i > maxequalmcs)
|
|
continue;
|
|
if (i == 32 &&
|
|
(ic->ic_htcaps & IEEE80211_HTC_TXMCS32) == 0)
|
|
continue;
|
|
if (i > 32 && i > maxunequalmcs)
|
|
continue;
|
|
rs->rs_rates[rs->rs_nrates++] = i;
|
|
}
|
|
}
|
|
return ieee80211_fix_rate(ni, (struct ieee80211_rateset *) rs, flags);
|
|
}
|
|
|
|
/*
|
|
* Mark rates in a node's HT rate set as basic according
|
|
* to the information in the supplied HT info ie.
|
|
*/
|
|
void
|
|
ieee80211_setup_basic_htrates(struct ieee80211_node *ni, const uint8_t *ie)
|
|
{
|
|
const struct ieee80211_ie_htinfo *htinfo;
|
|
struct ieee80211_htrateset *rs;
|
|
int i, j;
|
|
|
|
if (ie[0] == IEEE80211_ELEMID_VENDOR)
|
|
ie += 4;
|
|
htinfo = (const struct ieee80211_ie_htinfo *) ie;
|
|
rs = &ni->ni_htrates;
|
|
if (rs->rs_nrates == 0) {
|
|
IEEE80211_NOTE(ni->ni_vap,
|
|
IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni,
|
|
"%s", "WARNING, empty HT rate set");
|
|
return;
|
|
}
|
|
for (i = 0; i < IEEE80211_HTRATE_MAXSIZE; i++) {
|
|
if (isclr(htinfo->hi_basicmcsset, i))
|
|
continue;
|
|
for (j = 0; j < rs->rs_nrates; j++)
|
|
if ((rs->rs_rates[j] & IEEE80211_RATE_VAL) == i)
|
|
rs->rs_rates[j] |= IEEE80211_RATE_BASIC;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ampdu_tx_setup(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
callout_init(&tap->txa_timer, CALLOUT_MPSAFE);
|
|
tap->txa_flags |= IEEE80211_AGGR_SETUP;
|
|
}
|
|
|
|
static void
|
|
ampdu_tx_stop(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
struct ieee80211_node *ni = tap->txa_ni;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
|
|
IEEE80211_NOTE(tap->txa_ni->ni_vap, IEEE80211_MSG_11N,
|
|
tap->txa_ni,
|
|
"%s: called",
|
|
__func__);
|
|
|
|
KASSERT(tap->txa_flags & IEEE80211_AGGR_SETUP,
|
|
("txa_flags 0x%x tid %d ac %d", tap->txa_flags, tap->txa_tid,
|
|
TID_TO_WME_AC(tap->txa_tid)));
|
|
|
|
/*
|
|
* Stop BA stream if setup so driver has a chance
|
|
* to reclaim any resources it might have allocated.
|
|
*/
|
|
ic->ic_addba_stop(ni, tap);
|
|
/*
|
|
* Stop any pending BAR transmit.
|
|
*/
|
|
bar_stop_timer(tap);
|
|
|
|
tap->txa_lastsample = 0;
|
|
tap->txa_avgpps = 0;
|
|
/* NB: clearing NAK means we may re-send ADDBA */
|
|
tap->txa_flags &= ~(IEEE80211_AGGR_SETUP | IEEE80211_AGGR_NAK);
|
|
}
|
|
|
|
/*
|
|
* ADDBA response timeout.
|
|
*
|
|
* If software aggregation and per-TID queue management was done here,
|
|
* that queue would be unpaused after the ADDBA timeout occurs.
|
|
*/
|
|
static void
|
|
addba_timeout(void *arg)
|
|
{
|
|
struct ieee80211_tx_ampdu *tap = arg;
|
|
struct ieee80211_node *ni = tap->txa_ni;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
|
|
/* XXX ? */
|
|
tap->txa_flags &= ~IEEE80211_AGGR_XCHGPEND;
|
|
tap->txa_attempts++;
|
|
ic->ic_addba_response_timeout(ni, tap);
|
|
}
|
|
|
|
static void
|
|
addba_start_timeout(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
/* XXX use CALLOUT_PENDING instead? */
|
|
callout_reset(&tap->txa_timer, ieee80211_addba_timeout,
|
|
addba_timeout, tap);
|
|
tap->txa_flags |= IEEE80211_AGGR_XCHGPEND;
|
|
tap->txa_nextrequest = ticks + ieee80211_addba_timeout;
|
|
}
|
|
|
|
static void
|
|
addba_stop_timeout(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
/* XXX use CALLOUT_PENDING instead? */
|
|
if (tap->txa_flags & IEEE80211_AGGR_XCHGPEND) {
|
|
callout_stop(&tap->txa_timer);
|
|
tap->txa_flags &= ~IEEE80211_AGGR_XCHGPEND;
|
|
}
|
|
}
|
|
|
|
static void
|
|
null_addba_response_timeout(struct ieee80211_node *ni,
|
|
struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Default method for requesting A-MPDU tx aggregation.
|
|
* We setup the specified state block and start a timer
|
|
* to wait for an ADDBA response frame.
|
|
*/
|
|
static int
|
|
ieee80211_addba_request(struct ieee80211_node *ni,
|
|
struct ieee80211_tx_ampdu *tap,
|
|
int dialogtoken, int baparamset, int batimeout)
|
|
{
|
|
int bufsiz;
|
|
|
|
/* XXX locking */
|
|
tap->txa_token = dialogtoken;
|
|
tap->txa_flags |= IEEE80211_AGGR_IMMEDIATE;
|
|
bufsiz = MS(baparamset, IEEE80211_BAPS_BUFSIZ);
|
|
tap->txa_wnd = (bufsiz == 0) ?
|
|
IEEE80211_AGGR_BAWMAX : min(bufsiz, IEEE80211_AGGR_BAWMAX);
|
|
addba_start_timeout(tap);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Default method for processing an A-MPDU tx aggregation
|
|
* response. We shutdown any pending timer and update the
|
|
* state block according to the reply.
|
|
*/
|
|
static int
|
|
ieee80211_addba_response(struct ieee80211_node *ni,
|
|
struct ieee80211_tx_ampdu *tap,
|
|
int status, int baparamset, int batimeout)
|
|
{
|
|
int bufsiz, tid;
|
|
|
|
/* XXX locking */
|
|
addba_stop_timeout(tap);
|
|
if (status == IEEE80211_STATUS_SUCCESS) {
|
|
bufsiz = MS(baparamset, IEEE80211_BAPS_BUFSIZ);
|
|
/* XXX override our request? */
|
|
tap->txa_wnd = (bufsiz == 0) ?
|
|
IEEE80211_AGGR_BAWMAX : min(bufsiz, IEEE80211_AGGR_BAWMAX);
|
|
/* XXX AC/TID */
|
|
tid = MS(baparamset, IEEE80211_BAPS_TID);
|
|
tap->txa_flags |= IEEE80211_AGGR_RUNNING;
|
|
tap->txa_attempts = 0;
|
|
} else {
|
|
/* mark tid so we don't try again */
|
|
tap->txa_flags |= IEEE80211_AGGR_NAK;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Default method for stopping A-MPDU tx aggregation.
|
|
* Any timer is cleared and we drain any pending frames.
|
|
*/
|
|
static void
|
|
ieee80211_addba_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
/* XXX locking */
|
|
addba_stop_timeout(tap);
|
|
if (tap->txa_flags & IEEE80211_AGGR_RUNNING) {
|
|
/* XXX clear aggregation queue */
|
|
tap->txa_flags &= ~IEEE80211_AGGR_RUNNING;
|
|
}
|
|
tap->txa_attempts = 0;
|
|
}
|
|
|
|
/*
|
|
* Process a received action frame using the default aggregation
|
|
* policy. We intercept ADDBA-related frames and use them to
|
|
* update our aggregation state. All other frames are passed up
|
|
* for processing by ieee80211_recv_action.
|
|
*/
|
|
static int
|
|
ht_recv_action_ba_addba_request(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_rx_ampdu *rap;
|
|
uint8_t dialogtoken;
|
|
uint16_t baparamset, batimeout, baseqctl;
|
|
uint16_t args[5];
|
|
int tid;
|
|
|
|
dialogtoken = frm[2];
|
|
baparamset = LE_READ_2(frm+3);
|
|
batimeout = LE_READ_2(frm+5);
|
|
baseqctl = LE_READ_2(frm+7);
|
|
|
|
tid = MS(baparamset, IEEE80211_BAPS_TID);
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"recv ADDBA request: dialogtoken %u baparamset 0x%x "
|
|
"(tid %d bufsiz %d) batimeout %d baseqctl %d:%d",
|
|
dialogtoken, baparamset,
|
|
tid, MS(baparamset, IEEE80211_BAPS_BUFSIZ),
|
|
batimeout,
|
|
MS(baseqctl, IEEE80211_BASEQ_START),
|
|
MS(baseqctl, IEEE80211_BASEQ_FRAG));
|
|
|
|
rap = &ni->ni_rx_ampdu[tid];
|
|
|
|
/* Send ADDBA response */
|
|
args[0] = dialogtoken;
|
|
/*
|
|
* NB: We ack only if the sta associated with HT and
|
|
* the ap is configured to do AMPDU rx (the latter
|
|
* violates the 11n spec and is mostly for testing).
|
|
*/
|
|
if ((ni->ni_flags & IEEE80211_NODE_AMPDU_RX) &&
|
|
(vap->iv_flags_ht & IEEE80211_FHT_AMPDU_RX)) {
|
|
/* XXX handle ampdu_rx_start failure */
|
|
ic->ic_ampdu_rx_start(ni, rap,
|
|
baparamset, batimeout, baseqctl);
|
|
|
|
args[1] = IEEE80211_STATUS_SUCCESS;
|
|
} else {
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N,
|
|
ni, "reject ADDBA request: %s",
|
|
ni->ni_flags & IEEE80211_NODE_AMPDU_RX ?
|
|
"administratively disabled" :
|
|
"not negotiated for station");
|
|
vap->iv_stats.is_addba_reject++;
|
|
args[1] = IEEE80211_STATUS_UNSPECIFIED;
|
|
}
|
|
/* XXX honor rap flags? */
|
|
args[2] = IEEE80211_BAPS_POLICY_IMMEDIATE
|
|
| SM(tid, IEEE80211_BAPS_TID)
|
|
| SM(rap->rxa_wnd, IEEE80211_BAPS_BUFSIZ)
|
|
;
|
|
args[3] = 0;
|
|
args[4] = 0;
|
|
ic->ic_send_action(ni, IEEE80211_ACTION_CAT_BA,
|
|
IEEE80211_ACTION_BA_ADDBA_RESPONSE, args);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ht_recv_action_ba_addba_response(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_tx_ampdu *tap;
|
|
uint8_t dialogtoken, policy;
|
|
uint16_t baparamset, batimeout, code;
|
|
int tid, bufsiz;
|
|
|
|
dialogtoken = frm[2];
|
|
code = LE_READ_2(frm+3);
|
|
baparamset = LE_READ_2(frm+5);
|
|
tid = MS(baparamset, IEEE80211_BAPS_TID);
|
|
bufsiz = MS(baparamset, IEEE80211_BAPS_BUFSIZ);
|
|
policy = MS(baparamset, IEEE80211_BAPS_POLICY);
|
|
batimeout = LE_READ_2(frm+7);
|
|
|
|
tap = &ni->ni_tx_ampdu[tid];
|
|
if ((tap->txa_flags & IEEE80211_AGGR_XCHGPEND) == 0) {
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_ACTION | IEEE80211_MSG_11N,
|
|
ni->ni_macaddr, "ADDBA response",
|
|
"no pending ADDBA, tid %d dialogtoken %u "
|
|
"code %d", tid, dialogtoken, code);
|
|
vap->iv_stats.is_addba_norequest++;
|
|
return 0;
|
|
}
|
|
if (dialogtoken != tap->txa_token) {
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_ACTION | IEEE80211_MSG_11N,
|
|
ni->ni_macaddr, "ADDBA response",
|
|
"dialogtoken mismatch: waiting for %d, "
|
|
"received %d, tid %d code %d",
|
|
tap->txa_token, dialogtoken, tid, code);
|
|
vap->iv_stats.is_addba_badtoken++;
|
|
return 0;
|
|
}
|
|
/* NB: assumes IEEE80211_AGGR_IMMEDIATE is 1 */
|
|
if (policy != (tap->txa_flags & IEEE80211_AGGR_IMMEDIATE)) {
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_ACTION | IEEE80211_MSG_11N,
|
|
ni->ni_macaddr, "ADDBA response",
|
|
"policy mismatch: expecting %s, "
|
|
"received %s, tid %d code %d",
|
|
tap->txa_flags & IEEE80211_AGGR_IMMEDIATE,
|
|
policy, tid, code);
|
|
vap->iv_stats.is_addba_badpolicy++;
|
|
return 0;
|
|
}
|
|
#if 0
|
|
/* XXX we take MIN in ieee80211_addba_response */
|
|
if (bufsiz > IEEE80211_AGGR_BAWMAX) {
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_ACTION | IEEE80211_MSG_11N,
|
|
ni->ni_macaddr, "ADDBA response",
|
|
"BA window too large: max %d, "
|
|
"received %d, tid %d code %d",
|
|
bufsiz, IEEE80211_AGGR_BAWMAX, tid, code);
|
|
vap->iv_stats.is_addba_badbawinsize++;
|
|
return 0;
|
|
}
|
|
#endif
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"recv ADDBA response: dialogtoken %u code %d "
|
|
"baparamset 0x%x (tid %d bufsiz %d) batimeout %d",
|
|
dialogtoken, code, baparamset, tid, bufsiz,
|
|
batimeout);
|
|
ic->ic_addba_response(ni, tap, code, baparamset, batimeout);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ht_recv_action_ba_delba(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211_rx_ampdu *rap;
|
|
struct ieee80211_tx_ampdu *tap;
|
|
uint16_t baparamset, code;
|
|
int tid;
|
|
|
|
baparamset = LE_READ_2(frm+2);
|
|
code = LE_READ_2(frm+4);
|
|
|
|
tid = MS(baparamset, IEEE80211_DELBAPS_TID);
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"recv DELBA: baparamset 0x%x (tid %d initiator %d) "
|
|
"code %d", baparamset, tid,
|
|
MS(baparamset, IEEE80211_DELBAPS_INIT), code);
|
|
|
|
if ((baparamset & IEEE80211_DELBAPS_INIT) == 0) {
|
|
tap = &ni->ni_tx_ampdu[tid];
|
|
ic->ic_addba_stop(ni, tap);
|
|
} else {
|
|
rap = &ni->ni_rx_ampdu[tid];
|
|
ic->ic_ampdu_rx_stop(ni, rap);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ht_recv_action_ht_txchwidth(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
int chw;
|
|
|
|
chw = (frm[2] == IEEE80211_A_HT_TXCHWIDTH_2040) ? 40 : 20;
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"%s: HT txchwidth, width %d%s",
|
|
__func__, chw, ni->ni_chw != chw ? "*" : "");
|
|
if (chw != ni->ni_chw) {
|
|
ni->ni_chw = chw;
|
|
/* XXX notify on change */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ht_recv_action_ht_mimopwrsave(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
const struct ieee80211_action_ht_mimopowersave *mps =
|
|
(const struct ieee80211_action_ht_mimopowersave *) frm;
|
|
|
|
/* XXX check iv_htcaps */
|
|
if (mps->am_control & IEEE80211_A_HT_MIMOPWRSAVE_ENA)
|
|
ni->ni_flags |= IEEE80211_NODE_MIMO_PS;
|
|
else
|
|
ni->ni_flags &= ~IEEE80211_NODE_MIMO_PS;
|
|
if (mps->am_control & IEEE80211_A_HT_MIMOPWRSAVE_MODE)
|
|
ni->ni_flags |= IEEE80211_NODE_MIMO_RTS;
|
|
else
|
|
ni->ni_flags &= ~IEEE80211_NODE_MIMO_RTS;
|
|
/* XXX notify on change */
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"%s: HT MIMO PS (%s%s)", __func__,
|
|
(ni->ni_flags & IEEE80211_NODE_MIMO_PS) ? "on" : "off",
|
|
(ni->ni_flags & IEEE80211_NODE_MIMO_RTS) ? "+rts" : ""
|
|
);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Transmit processing.
|
|
*/
|
|
|
|
/*
|
|
* Check if A-MPDU should be requested/enabled for a stream.
|
|
* We require a traffic rate above a per-AC threshold and we
|
|
* also handle backoff from previous failed attempts.
|
|
*
|
|
* Drivers may override this method to bring in information
|
|
* such as link state conditions in making the decision.
|
|
*/
|
|
static int
|
|
ieee80211_ampdu_enable(struct ieee80211_node *ni,
|
|
struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
|
|
if (tap->txa_avgpps <
|
|
vap->iv_ampdu_mintraffic[TID_TO_WME_AC(tap->txa_tid)])
|
|
return 0;
|
|
/* XXX check rssi? */
|
|
if (tap->txa_attempts >= ieee80211_addba_maxtries &&
|
|
ticks < tap->txa_nextrequest) {
|
|
/*
|
|
* Don't retry too often; txa_nextrequest is set
|
|
* to the minimum interval we'll retry after
|
|
* ieee80211_addba_maxtries failed attempts are made.
|
|
*/
|
|
return 0;
|
|
}
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_11N, ni,
|
|
"enable AMPDU on tid %d (%s), avgpps %d pkts %d",
|
|
tap->txa_tid, ieee80211_wme_acnames[TID_TO_WME_AC(tap->txa_tid)],
|
|
tap->txa_avgpps, tap->txa_pkts);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Request A-MPDU tx aggregation. Setup local state and
|
|
* issue an ADDBA request. BA use will only happen after
|
|
* the other end replies with ADDBA response.
|
|
*/
|
|
int
|
|
ieee80211_ampdu_request(struct ieee80211_node *ni,
|
|
struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint16_t args[5];
|
|
int tid, dialogtoken;
|
|
static int tokens = 0; /* XXX */
|
|
|
|
/* XXX locking */
|
|
if ((tap->txa_flags & IEEE80211_AGGR_SETUP) == 0) {
|
|
/* do deferred setup of state */
|
|
ampdu_tx_setup(tap);
|
|
}
|
|
/* XXX hack for not doing proper locking */
|
|
tap->txa_flags &= ~IEEE80211_AGGR_NAK;
|
|
|
|
dialogtoken = (tokens+1) % 63; /* XXX */
|
|
tid = tap->txa_tid;
|
|
tap->txa_start = ni->ni_txseqs[tid];
|
|
|
|
args[0] = dialogtoken;
|
|
args[1] = 0; /* NB: status code not used */
|
|
args[2] = IEEE80211_BAPS_POLICY_IMMEDIATE
|
|
| SM(tid, IEEE80211_BAPS_TID)
|
|
| SM(IEEE80211_AGGR_BAWMAX, IEEE80211_BAPS_BUFSIZ)
|
|
;
|
|
args[3] = 0; /* batimeout */
|
|
/* NB: do first so there's no race against reply */
|
|
if (!ic->ic_addba_request(ni, tap, dialogtoken, args[2], args[3])) {
|
|
/* unable to setup state, don't make request */
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni, "%s: could not setup BA stream for TID %d AC %d",
|
|
__func__, tap->txa_tid, TID_TO_WME_AC(tap->txa_tid));
|
|
/* defer next try so we don't slam the driver with requests */
|
|
tap->txa_attempts = ieee80211_addba_maxtries;
|
|
/* NB: check in case driver wants to override */
|
|
if (tap->txa_nextrequest <= ticks)
|
|
tap->txa_nextrequest = ticks + ieee80211_addba_backoff;
|
|
return 0;
|
|
}
|
|
tokens = dialogtoken; /* allocate token */
|
|
/* NB: after calling ic_addba_request so driver can set txa_start */
|
|
args[4] = SM(tap->txa_start, IEEE80211_BASEQ_START)
|
|
| SM(0, IEEE80211_BASEQ_FRAG)
|
|
;
|
|
return ic->ic_send_action(ni, IEEE80211_ACTION_CAT_BA,
|
|
IEEE80211_ACTION_BA_ADDBA_REQUEST, args);
|
|
}
|
|
|
|
/*
|
|
* Terminate an AMPDU tx stream. State is reclaimed
|
|
* and the peer notified with a DelBA Action frame.
|
|
*/
|
|
void
|
|
ieee80211_ampdu_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
|
|
int reason)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
uint16_t args[4];
|
|
|
|
/* XXX locking */
|
|
tap->txa_flags &= ~IEEE80211_AGGR_BARPEND;
|
|
if (IEEE80211_AMPDU_RUNNING(tap)) {
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N,
|
|
ni, "%s: stop BA stream for TID %d (reason %d)",
|
|
__func__, tap->txa_tid, reason);
|
|
vap->iv_stats.is_ampdu_stop++;
|
|
|
|
ic->ic_addba_stop(ni, tap);
|
|
args[0] = tap->txa_tid;
|
|
args[1] = IEEE80211_DELBAPS_INIT;
|
|
args[2] = reason; /* XXX reason code */
|
|
ic->ic_send_action(ni, IEEE80211_ACTION_CAT_BA,
|
|
IEEE80211_ACTION_BA_DELBA, args);
|
|
} else {
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N,
|
|
ni, "%s: BA stream for TID %d not running (reason %d)",
|
|
__func__, tap->txa_tid, reason);
|
|
vap->iv_stats.is_ampdu_stop_failed++;
|
|
}
|
|
}
|
|
|
|
/* XXX */
|
|
static void bar_start_timer(struct ieee80211_tx_ampdu *tap);
|
|
|
|
static void
|
|
bar_timeout(void *arg)
|
|
{
|
|
struct ieee80211_tx_ampdu *tap = arg;
|
|
struct ieee80211_node *ni = tap->txa_ni;
|
|
|
|
KASSERT((tap->txa_flags & IEEE80211_AGGR_XCHGPEND) == 0,
|
|
("bar/addba collision, flags 0x%x", tap->txa_flags));
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni, "%s: tid %u flags 0x%x attempts %d", __func__,
|
|
tap->txa_tid, tap->txa_flags, tap->txa_attempts);
|
|
|
|
/* guard against race with bar_tx_complete */
|
|
if ((tap->txa_flags & IEEE80211_AGGR_BARPEND) == 0)
|
|
return;
|
|
/* XXX ? */
|
|
if (tap->txa_attempts >= ieee80211_bar_maxtries) {
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
|
|
ni->ni_vap->iv_stats.is_ampdu_bar_tx_fail++;
|
|
/*
|
|
* If (at least) the last BAR TX timeout was due to
|
|
* an ieee80211_send_bar() failures, then we need
|
|
* to make sure we notify the driver that a BAR
|
|
* TX did occur and fail. This gives the driver
|
|
* a chance to undo any queue pause that may
|
|
* have occured.
|
|
*/
|
|
ic->ic_bar_response(ni, tap, 1);
|
|
ieee80211_ampdu_stop(ni, tap, IEEE80211_REASON_TIMEOUT);
|
|
} else {
|
|
ni->ni_vap->iv_stats.is_ampdu_bar_tx_retry++;
|
|
if (ieee80211_send_bar(ni, tap, tap->txa_seqpending) != 0) {
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni, "%s: failed to TX, starting timer\n",
|
|
__func__);
|
|
/*
|
|
* If ieee80211_send_bar() fails here, the
|
|
* timer may have stopped and/or the pending
|
|
* flag may be clear. Because of this,
|
|
* fake the BARPEND and reset the timer.
|
|
* A retransmission attempt will then occur
|
|
* during the next timeout.
|
|
*/
|
|
/* XXX locking */
|
|
tap->txa_flags |= IEEE80211_AGGR_BARPEND;
|
|
bar_start_timer(tap);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
bar_start_timer(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
IEEE80211_NOTE(tap->txa_ni->ni_vap, IEEE80211_MSG_11N,
|
|
tap->txa_ni,
|
|
"%s: called",
|
|
__func__);
|
|
callout_reset(&tap->txa_timer, ieee80211_bar_timeout, bar_timeout, tap);
|
|
}
|
|
|
|
static void
|
|
bar_stop_timer(struct ieee80211_tx_ampdu *tap)
|
|
{
|
|
IEEE80211_NOTE(tap->txa_ni->ni_vap, IEEE80211_MSG_11N,
|
|
tap->txa_ni,
|
|
"%s: called",
|
|
__func__);
|
|
callout_stop(&tap->txa_timer);
|
|
}
|
|
|
|
static void
|
|
bar_tx_complete(struct ieee80211_node *ni, void *arg, int status)
|
|
{
|
|
struct ieee80211_tx_ampdu *tap = arg;
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni, "%s: tid %u flags 0x%x pending %d status %d",
|
|
__func__, tap->txa_tid, tap->txa_flags,
|
|
callout_pending(&tap->txa_timer), status);
|
|
|
|
ni->ni_vap->iv_stats.is_ampdu_bar_tx++;
|
|
/* XXX locking */
|
|
if ((tap->txa_flags & IEEE80211_AGGR_BARPEND) &&
|
|
callout_pending(&tap->txa_timer)) {
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
|
|
if (status == 0) /* ACK'd */
|
|
bar_stop_timer(tap);
|
|
ic->ic_bar_response(ni, tap, status);
|
|
/* NB: just let timer expire so we pace requests */
|
|
}
|
|
}
|
|
|
|
static void
|
|
ieee80211_bar_response(struct ieee80211_node *ni,
|
|
struct ieee80211_tx_ampdu *tap, int status)
|
|
{
|
|
|
|
IEEE80211_NOTE(tap->txa_ni->ni_vap, IEEE80211_MSG_11N,
|
|
tap->txa_ni,
|
|
"%s: called",
|
|
__func__);
|
|
if (status == 0) { /* got ACK */
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
|
|
ni, "BAR moves BA win <%u:%u> (%u frames) txseq %u tid %u",
|
|
tap->txa_start,
|
|
IEEE80211_SEQ_ADD(tap->txa_start, tap->txa_wnd-1),
|
|
tap->txa_qframes, tap->txa_seqpending,
|
|
tap->txa_tid);
|
|
|
|
/* NB: timer already stopped in bar_tx_complete */
|
|
tap->txa_start = tap->txa_seqpending;
|
|
tap->txa_flags &= ~IEEE80211_AGGR_BARPEND;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Transmit a BAR frame to the specified node. The
|
|
* BAR contents are drawn from the supplied aggregation
|
|
* state associated with the node.
|
|
*
|
|
* NB: we only handle immediate ACK w/ compressed bitmap.
|
|
*/
|
|
int
|
|
ieee80211_send_bar(struct ieee80211_node *ni,
|
|
struct ieee80211_tx_ampdu *tap, ieee80211_seq seq)
|
|
{
|
|
#define senderr(_x, _v) do { vap->iv_stats._v++; ret = _x; goto bad; } while (0)
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211_frame_bar *bar;
|
|
struct mbuf *m;
|
|
uint16_t barctl, barseqctl;
|
|
uint8_t *frm;
|
|
int tid, ret;
|
|
|
|
|
|
IEEE80211_NOTE(tap->txa_ni->ni_vap, IEEE80211_MSG_11N,
|
|
tap->txa_ni,
|
|
"%s: called",
|
|
__func__);
|
|
|
|
if ((tap->txa_flags & IEEE80211_AGGR_RUNNING) == 0) {
|
|
/* no ADDBA response, should not happen */
|
|
/* XXX stat+msg */
|
|
return EINVAL;
|
|
}
|
|
/* XXX locking */
|
|
bar_stop_timer(tap);
|
|
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm, ic->ic_headroom, sizeof(*bar));
|
|
if (m == NULL)
|
|
senderr(ENOMEM, is_tx_nobuf);
|
|
|
|
if (!ieee80211_add_callback(m, bar_tx_complete, tap)) {
|
|
m_freem(m);
|
|
senderr(ENOMEM, is_tx_nobuf); /* XXX */
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
bar = mtod(m, struct ieee80211_frame_bar *);
|
|
bar->i_fc[0] = IEEE80211_FC0_VERSION_0 |
|
|
IEEE80211_FC0_TYPE_CTL | IEEE80211_FC0_SUBTYPE_BAR;
|
|
bar->i_fc[1] = 0;
|
|
IEEE80211_ADDR_COPY(bar->i_ra, ni->ni_macaddr);
|
|
IEEE80211_ADDR_COPY(bar->i_ta, vap->iv_myaddr);
|
|
|
|
tid = tap->txa_tid;
|
|
barctl = (tap->txa_flags & IEEE80211_AGGR_IMMEDIATE ?
|
|
0 : IEEE80211_BAR_NOACK)
|
|
| IEEE80211_BAR_COMP
|
|
| SM(tid, IEEE80211_BAR_TID)
|
|
;
|
|
barseqctl = SM(seq, IEEE80211_BAR_SEQ_START);
|
|
/* NB: known to have proper alignment */
|
|
bar->i_ctl = htole16(barctl);
|
|
bar->i_seq = htole16(barseqctl);
|
|
m->m_pkthdr.len = m->m_len = sizeof(struct ieee80211_frame_bar);
|
|
|
|
M_WME_SETAC(m, WME_AC_VO);
|
|
|
|
IEEE80211_NODE_STAT(ni, tx_mgmt); /* XXX tx_ctl? */
|
|
|
|
/* XXX locking */
|
|
/* init/bump attempts counter */
|
|
if ((tap->txa_flags & IEEE80211_AGGR_BARPEND) == 0)
|
|
tap->txa_attempts = 1;
|
|
else
|
|
tap->txa_attempts++;
|
|
tap->txa_seqpending = seq;
|
|
tap->txa_flags |= IEEE80211_AGGR_BARPEND;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_11N,
|
|
ni, "send BAR: tid %u ctl 0x%x start %u (attempt %d)",
|
|
tid, barctl, seq, tap->txa_attempts);
|
|
|
|
/*
|
|
* ic_raw_xmit will free the node reference
|
|
* regardless of queue/TX success or failure.
|
|
*/
|
|
IEEE80211_TX_LOCK(ic);
|
|
ret = ieee80211_raw_output(vap, ni, m, NULL);
|
|
IEEE80211_TX_UNLOCK(ic);
|
|
if (ret != 0) {
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_11N,
|
|
ni, "send BAR: failed: (ret = %d)\n",
|
|
ret);
|
|
/* xmit failed, clear state flag */
|
|
tap->txa_flags &= ~IEEE80211_AGGR_BARPEND;
|
|
vap->iv_stats.is_ampdu_bar_tx_fail++;
|
|
return ret;
|
|
}
|
|
/* XXX hack against tx complete happening before timer is started */
|
|
if (tap->txa_flags & IEEE80211_AGGR_BARPEND)
|
|
bar_start_timer(tap);
|
|
return 0;
|
|
bad:
|
|
IEEE80211_NOTE(tap->txa_ni->ni_vap, IEEE80211_MSG_11N,
|
|
tap->txa_ni,
|
|
"%s: bad! ret=%d",
|
|
__func__, ret);
|
|
vap->iv_stats.is_ampdu_bar_tx_fail++;
|
|
ieee80211_free_node(ni);
|
|
return ret;
|
|
#undef senderr
|
|
}
|
|
|
|
static int
|
|
ht_action_output(struct ieee80211_node *ni, struct mbuf *m)
|
|
{
|
|
struct ieee80211_bpf_params params;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
params.ibp_pri = WME_AC_VO;
|
|
params.ibp_rate0 = ni->ni_txparms->mgmtrate;
|
|
/* NB: we know all frames are unicast */
|
|
params.ibp_try0 = ni->ni_txparms->maxretry;
|
|
params.ibp_power = ni->ni_txpower;
|
|
return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION,
|
|
¶ms);
|
|
}
|
|
|
|
#define ADDSHORT(frm, v) do { \
|
|
frm[0] = (v) & 0xff; \
|
|
frm[1] = (v) >> 8; \
|
|
frm += 2; \
|
|
} while (0)
|
|
|
|
/*
|
|
* Send an action management frame. The arguments are stuff
|
|
* into a frame without inspection; the caller is assumed to
|
|
* prepare them carefully (e.g. based on the aggregation state).
|
|
*/
|
|
static int
|
|
ht_send_action_ba_addba(struct ieee80211_node *ni,
|
|
int category, int action, void *arg0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint16_t *args = arg0;
|
|
struct mbuf *m;
|
|
uint8_t *frm;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"send ADDBA %s: dialogtoken %d status %d "
|
|
"baparamset 0x%x (tid %d) batimeout 0x%x baseqctl 0x%x",
|
|
(action == IEEE80211_ACTION_BA_ADDBA_REQUEST) ?
|
|
"request" : "response",
|
|
args[0], args[1], args[2], MS(args[2], IEEE80211_BAPS_TID),
|
|
args[3], args[4]);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
/* XXX may action payload */
|
|
+ sizeof(struct ieee80211_action_ba_addbaresponse)
|
|
);
|
|
if (m != NULL) {
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
*frm++ = args[0]; /* dialog token */
|
|
if (action == IEEE80211_ACTION_BA_ADDBA_RESPONSE)
|
|
ADDSHORT(frm, args[1]); /* status code */
|
|
ADDSHORT(frm, args[2]); /* baparamset */
|
|
ADDSHORT(frm, args[3]); /* batimeout */
|
|
if (action == IEEE80211_ACTION_BA_ADDBA_REQUEST)
|
|
ADDSHORT(frm, args[4]); /* baseqctl */
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return ht_action_output(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
static int
|
|
ht_send_action_ba_delba(struct ieee80211_node *ni,
|
|
int category, int action, void *arg0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint16_t *args = arg0;
|
|
struct mbuf *m;
|
|
uint16_t baparamset;
|
|
uint8_t *frm;
|
|
|
|
baparamset = SM(args[0], IEEE80211_DELBAPS_TID)
|
|
| args[1]
|
|
;
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"send DELBA action: tid %d, initiator %d reason %d",
|
|
args[0], args[1], args[2]);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
/* XXX may action payload */
|
|
+ sizeof(struct ieee80211_action_ba_addbaresponse)
|
|
);
|
|
if (m != NULL) {
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
ADDSHORT(frm, baparamset);
|
|
ADDSHORT(frm, args[2]); /* reason code */
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return ht_action_output(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
static int
|
|
ht_send_action_ht_txchwidth(struct ieee80211_node *ni,
|
|
int category, int action, void *arg0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct mbuf *m;
|
|
uint8_t *frm;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_11N, ni,
|
|
"send HT txchwidth: width %d",
|
|
IEEE80211_IS_CHAN_HT40(ni->ni_chan) ? 40 : 20);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
/* XXX may action payload */
|
|
+ sizeof(struct ieee80211_action_ba_addbaresponse)
|
|
);
|
|
if (m != NULL) {
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
*frm++ = IEEE80211_IS_CHAN_HT40(ni->ni_chan) ?
|
|
IEEE80211_A_HT_TXCHWIDTH_2040 :
|
|
IEEE80211_A_HT_TXCHWIDTH_20;
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return ht_action_output(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
#undef ADDSHORT
|
|
|
|
/*
|
|
* Construct the MCS bit mask for inclusion in an HT capabilities
|
|
* information element.
|
|
*/
|
|
static void
|
|
ieee80211_set_mcsset(struct ieee80211com *ic, uint8_t *frm)
|
|
{
|
|
int i;
|
|
uint8_t txparams;
|
|
|
|
KASSERT((ic->ic_rxstream > 0 && ic->ic_rxstream <= 4),
|
|
("ic_rxstream %d out of range", ic->ic_rxstream));
|
|
KASSERT((ic->ic_txstream > 0 && ic->ic_txstream <= 4),
|
|
("ic_txstream %d out of range", ic->ic_txstream));
|
|
|
|
for (i = 0; i < ic->ic_rxstream * 8; i++)
|
|
setbit(frm, i);
|
|
if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
|
|
(ic->ic_htcaps & IEEE80211_HTC_RXMCS32))
|
|
setbit(frm, 32);
|
|
if (ic->ic_htcaps & IEEE80211_HTC_RXUNEQUAL) {
|
|
if (ic->ic_rxstream >= 2) {
|
|
for (i = 33; i <= 38; i++)
|
|
setbit(frm, i);
|
|
}
|
|
if (ic->ic_rxstream >= 3) {
|
|
for (i = 39; i <= 52; i++)
|
|
setbit(frm, i);
|
|
}
|
|
if (ic->ic_txstream >= 4) {
|
|
for (i = 53; i <= 76; i++)
|
|
setbit(frm, i);
|
|
}
|
|
}
|
|
|
|
if (ic->ic_rxstream != ic->ic_txstream) {
|
|
txparams = 0x1; /* TX MCS set defined */
|
|
txparams |= 0x2; /* TX RX MCS not equal */
|
|
txparams |= (ic->ic_txstream - 1) << 2; /* num TX streams */
|
|
if (ic->ic_htcaps & IEEE80211_HTC_TXUNEQUAL)
|
|
txparams |= 0x16; /* TX unequal modulation sup */
|
|
} else
|
|
txparams = 0;
|
|
frm[12] = txparams;
|
|
}
|
|
|
|
/*
|
|
* Add body of an HTCAP information element.
|
|
*/
|
|
static uint8_t *
|
|
ieee80211_add_htcap_body(uint8_t *frm, struct ieee80211_node *ni)
|
|
{
|
|
#define ADDSHORT(frm, v) do { \
|
|
frm[0] = (v) & 0xff; \
|
|
frm[1] = (v) >> 8; \
|
|
frm += 2; \
|
|
} while (0)
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
uint16_t caps, extcaps;
|
|
int rxmax, density;
|
|
|
|
/* HT capabilities */
|
|
caps = vap->iv_htcaps & 0xffff;
|
|
/*
|
|
* Note channel width depends on whether we are operating as
|
|
* a sta or not. When operating as a sta we are generating
|
|
* a request based on our desired configuration. Otherwise
|
|
* we are operational and the channel attributes identify
|
|
* how we've been setup (which might be different if a fixed
|
|
* channel is specified).
|
|
*/
|
|
if (vap->iv_opmode == IEEE80211_M_STA) {
|
|
/* override 20/40 use based on config */
|
|
if (vap->iv_flags_ht & IEEE80211_FHT_USEHT40)
|
|
caps |= IEEE80211_HTCAP_CHWIDTH40;
|
|
else
|
|
caps &= ~IEEE80211_HTCAP_CHWIDTH40;
|
|
/* use advertised setting (XXX locally constraint) */
|
|
rxmax = MS(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
|
|
density = MS(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
|
|
|
|
/*
|
|
* NB: Hardware might support HT40 on some but not all
|
|
* channels. We can't determine this earlier because only
|
|
* after association the channel is upgraded to HT based
|
|
* on the negotiated capabilities.
|
|
*/
|
|
if (ni->ni_chan != IEEE80211_CHAN_ANYC &&
|
|
findhtchan(ic, ni->ni_chan, IEEE80211_CHAN_HT40U) == NULL &&
|
|
findhtchan(ic, ni->ni_chan, IEEE80211_CHAN_HT40D) == NULL)
|
|
caps &= ~IEEE80211_HTCAP_CHWIDTH40;
|
|
} else {
|
|
/* override 20/40 use based on current channel */
|
|
if (IEEE80211_IS_CHAN_HT40(ni->ni_chan))
|
|
caps |= IEEE80211_HTCAP_CHWIDTH40;
|
|
else
|
|
caps &= ~IEEE80211_HTCAP_CHWIDTH40;
|
|
rxmax = vap->iv_ampdu_rxmax;
|
|
density = vap->iv_ampdu_density;
|
|
}
|
|
/* adjust short GI based on channel and config */
|
|
if ((vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20) == 0)
|
|
caps &= ~IEEE80211_HTCAP_SHORTGI20;
|
|
if ((vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40) == 0 ||
|
|
(caps & IEEE80211_HTCAP_CHWIDTH40) == 0)
|
|
caps &= ~IEEE80211_HTCAP_SHORTGI40;
|
|
ADDSHORT(frm, caps);
|
|
|
|
/* HT parameters */
|
|
*frm = SM(rxmax, IEEE80211_HTCAP_MAXRXAMPDU)
|
|
| SM(density, IEEE80211_HTCAP_MPDUDENSITY)
|
|
;
|
|
frm++;
|
|
|
|
/* pre-zero remainder of ie */
|
|
memset(frm, 0, sizeof(struct ieee80211_ie_htcap) -
|
|
__offsetof(struct ieee80211_ie_htcap, hc_mcsset));
|
|
|
|
/* supported MCS set */
|
|
/*
|
|
* XXX: For sta mode the rate set should be restricted based
|
|
* on the AP's capabilities, but ni_htrates isn't setup when
|
|
* we're called to form an AssocReq frame so for now we're
|
|
* restricted to the device capabilities.
|
|
*/
|
|
ieee80211_set_mcsset(ni->ni_ic, frm);
|
|
|
|
frm += __offsetof(struct ieee80211_ie_htcap, hc_extcap) -
|
|
__offsetof(struct ieee80211_ie_htcap, hc_mcsset);
|
|
|
|
/* HT extended capabilities */
|
|
extcaps = vap->iv_htextcaps & 0xffff;
|
|
|
|
ADDSHORT(frm, extcaps);
|
|
|
|
frm += sizeof(struct ieee80211_ie_htcap) -
|
|
__offsetof(struct ieee80211_ie_htcap, hc_txbf);
|
|
|
|
return frm;
|
|
#undef ADDSHORT
|
|
}
|
|
|
|
/*
|
|
* Add 802.11n HT capabilities information element
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_htcap(uint8_t *frm, struct ieee80211_node *ni)
|
|
{
|
|
frm[0] = IEEE80211_ELEMID_HTCAP;
|
|
frm[1] = sizeof(struct ieee80211_ie_htcap) - 2;
|
|
return ieee80211_add_htcap_body(frm + 2, ni);
|
|
}
|
|
|
|
/*
|
|
* Add Broadcom OUI wrapped standard HTCAP ie; this is
|
|
* used for compatibility w/ pre-draft implementations.
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_htcap_vendor(uint8_t *frm, struct ieee80211_node *ni)
|
|
{
|
|
frm[0] = IEEE80211_ELEMID_VENDOR;
|
|
frm[1] = 4 + sizeof(struct ieee80211_ie_htcap) - 2;
|
|
frm[2] = (BCM_OUI >> 0) & 0xff;
|
|
frm[3] = (BCM_OUI >> 8) & 0xff;
|
|
frm[4] = (BCM_OUI >> 16) & 0xff;
|
|
frm[5] = BCM_OUI_HTCAP;
|
|
return ieee80211_add_htcap_body(frm + 6, ni);
|
|
}
|
|
|
|
/*
|
|
* Construct the MCS bit mask of basic rates
|
|
* for inclusion in an HT information element.
|
|
*/
|
|
static void
|
|
ieee80211_set_basic_htrates(uint8_t *frm, const struct ieee80211_htrateset *rs)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < rs->rs_nrates; i++) {
|
|
int r = rs->rs_rates[i] & IEEE80211_RATE_VAL;
|
|
if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) &&
|
|
r < IEEE80211_HTRATE_MAXSIZE) {
|
|
/* NB: this assumes a particular implementation */
|
|
setbit(frm, r);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update the HTINFO ie for a beacon frame.
|
|
*/
|
|
void
|
|
ieee80211_ht_update_beacon(struct ieee80211vap *vap,
|
|
struct ieee80211_beacon_offsets *bo)
|
|
{
|
|
#define PROTMODE (IEEE80211_HTINFO_OPMODE|IEEE80211_HTINFO_NONHT_PRESENT)
|
|
struct ieee80211_node *ni;
|
|
const struct ieee80211_channel *bsschan;
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_ie_htinfo *ht =
|
|
(struct ieee80211_ie_htinfo *) bo->bo_htinfo;
|
|
|
|
ni = ieee80211_ref_node(vap->iv_bss);
|
|
bsschan = ni->ni_chan;
|
|
|
|
/* XXX only update on channel change */
|
|
ht->hi_ctrlchannel = ieee80211_chan2ieee(ic, bsschan);
|
|
if (vap->iv_flags_ht & IEEE80211_FHT_RIFS)
|
|
ht->hi_byte1 = IEEE80211_HTINFO_RIFSMODE_PERM;
|
|
else
|
|
ht->hi_byte1 = IEEE80211_HTINFO_RIFSMODE_PROH;
|
|
if (IEEE80211_IS_CHAN_HT40U(bsschan))
|
|
ht->hi_byte1 |= IEEE80211_HTINFO_2NDCHAN_ABOVE;
|
|
else if (IEEE80211_IS_CHAN_HT40D(bsschan))
|
|
ht->hi_byte1 |= IEEE80211_HTINFO_2NDCHAN_BELOW;
|
|
else
|
|
ht->hi_byte1 |= IEEE80211_HTINFO_2NDCHAN_NONE;
|
|
if (IEEE80211_IS_CHAN_HT40(bsschan))
|
|
ht->hi_byte1 |= IEEE80211_HTINFO_TXWIDTH_2040;
|
|
|
|
/* protection mode */
|
|
ht->hi_byte2 = (ht->hi_byte2 &~ PROTMODE) | ic->ic_curhtprotmode;
|
|
|
|
ieee80211_free_node(ni);
|
|
|
|
/* XXX propagate to vendor ie's */
|
|
#undef PROTMODE
|
|
}
|
|
|
|
/*
|
|
* Add body of an HTINFO information element.
|
|
*
|
|
* NB: We don't use struct ieee80211_ie_htinfo because we can
|
|
* be called to fillin both a standard ie and a compat ie that
|
|
* has a vendor OUI at the front.
|
|
*/
|
|
static uint8_t *
|
|
ieee80211_add_htinfo_body(uint8_t *frm, struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
|
|
/* pre-zero remainder of ie */
|
|
memset(frm, 0, sizeof(struct ieee80211_ie_htinfo) - 2);
|
|
|
|
/* primary/control channel center */
|
|
*frm++ = ieee80211_chan2ieee(ic, ni->ni_chan);
|
|
|
|
if (vap->iv_flags_ht & IEEE80211_FHT_RIFS)
|
|
frm[0] = IEEE80211_HTINFO_RIFSMODE_PERM;
|
|
else
|
|
frm[0] = IEEE80211_HTINFO_RIFSMODE_PROH;
|
|
if (IEEE80211_IS_CHAN_HT40U(ni->ni_chan))
|
|
frm[0] |= IEEE80211_HTINFO_2NDCHAN_ABOVE;
|
|
else if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
|
|
frm[0] |= IEEE80211_HTINFO_2NDCHAN_BELOW;
|
|
else
|
|
frm[0] |= IEEE80211_HTINFO_2NDCHAN_NONE;
|
|
if (IEEE80211_IS_CHAN_HT40(ni->ni_chan))
|
|
frm[0] |= IEEE80211_HTINFO_TXWIDTH_2040;
|
|
|
|
frm[1] = ic->ic_curhtprotmode;
|
|
|
|
frm += 5;
|
|
|
|
/* basic MCS set */
|
|
ieee80211_set_basic_htrates(frm, &ni->ni_htrates);
|
|
frm += sizeof(struct ieee80211_ie_htinfo) -
|
|
__offsetof(struct ieee80211_ie_htinfo, hi_basicmcsset);
|
|
return frm;
|
|
}
|
|
|
|
/*
|
|
* Add 802.11n HT information information element.
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_htinfo(uint8_t *frm, struct ieee80211_node *ni)
|
|
{
|
|
frm[0] = IEEE80211_ELEMID_HTINFO;
|
|
frm[1] = sizeof(struct ieee80211_ie_htinfo) - 2;
|
|
return ieee80211_add_htinfo_body(frm + 2, ni);
|
|
}
|
|
|
|
/*
|
|
* Add Broadcom OUI wrapped standard HTINFO ie; this is
|
|
* used for compatibility w/ pre-draft implementations.
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_htinfo_vendor(uint8_t *frm, struct ieee80211_node *ni)
|
|
{
|
|
frm[0] = IEEE80211_ELEMID_VENDOR;
|
|
frm[1] = 4 + sizeof(struct ieee80211_ie_htinfo) - 2;
|
|
frm[2] = (BCM_OUI >> 0) & 0xff;
|
|
frm[3] = (BCM_OUI >> 8) & 0xff;
|
|
frm[4] = (BCM_OUI >> 16) & 0xff;
|
|
frm[5] = BCM_OUI_HTINFO;
|
|
return ieee80211_add_htinfo_body(frm + 6, ni);
|
|
}
|