#include <sys/cdefs.h>
#ifdef __FreeBSD__
__FBSDID("$FreeBSD$");
#endif
#include "opt_inet.h"
#include "opt_wlan.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/endian.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_media.h>
#include <net/ethernet.h>
#include <netproto/802_11/ieee80211_var.h>
#include <netproto/802_11/ieee80211_action.h>
#include <netproto/802_11/ieee80211_input.h>
#define MS(_v, _f) (((_v) & _f) >> _f##_S)
#define SM(_v, _f) (((_v) << _f##_S) & _f)
const struct ieee80211_mcs_rates ieee80211_htrates[IEEE80211_HTRATE_MAXSIZE] = {
{ 13, 14, 27, 30 },
{ 26, 29, 54, 60 },
{ 39, 43, 81, 90 },
{ 52, 58, 108, 120 },
{ 78, 87, 162, 180 },
{ 104, 116, 216, 240 },
{ 117, 130, 243, 270 },
{ 130, 144, 270, 300 },
{ 26, 29, 54, 60 },
{ 52, 58, 108, 120 },
{ 78, 87, 162, 180 },
{ 104, 116, 216, 240 },
{ 156, 173, 324, 360 },
{ 208, 231, 432, 480 },
{ 234, 260, 486, 540 },
{ 260, 289, 540, 600 },
{ 39, 43, 81, 90 },
{ 78, 87, 162, 180 },
{ 117, 130, 243, 270 },
{ 156, 173, 324, 360 },
{ 234, 260, 486, 540 },
{ 312, 347, 648, 720 },
{ 351, 390, 729, 810 },
{ 390, 433, 810, 900 },
{ 52, 58, 108, 120 },
{ 104, 116, 216, 240 },
{ 156, 173, 324, 360 },
{ 208, 231, 432, 480 },
{ 312, 347, 648, 720 },
{ 416, 462, 864, 960 },
{ 468, 520, 972, 1080 },
{ 520, 578, 1080, 1200 },
{ 0, 0, 12, 13 },
{ 78, 87, 162, 180 },
{ 104, 116, 216, 240 },
{ 130, 144, 270, 300 },
{ 117, 130, 243, 270 },
{ 156, 173, 324, 360 },
{ 195, 217, 405, 450 },
{ 104, 116, 216, 240 },
{ 130, 144, 270, 300 },
{ 130, 144, 270, 300 },
{ 156, 173, 324, 360 },
{ 182, 202, 378, 420 },
{ 182, 202, 378, 420 },
{ 208, 231, 432, 480 },
{ 156, 173, 324, 360 },
{ 195, 217, 405, 450 },
{ 195, 217, 405, 450 },
{ 234, 260, 486, 540 },
{ 273, 303, 567, 630 },
{ 273, 303, 567, 630 },
{ 312, 347, 648, 720 },
{ 130, 144, 270, 300 },
{ 156, 173, 324, 360 },
{ 182, 202, 378, 420 },
{ 156, 173, 324, 360 },
{ 182, 202, 378, 420 },
{ 208, 231, 432, 480 },
{ 234, 260, 486, 540 },
{ 208, 231, 432, 480 },
{ 234, 260, 486, 540 },
{ 260, 289, 540, 600 },
{ 260, 289, 540, 600 },
{ 286, 318, 594, 660 },
{ 195, 217, 405, 450 },
{ 234, 260, 486, 540 },
{ 273, 303, 567, 630 },
{ 234, 260, 486, 540 },
{ 273, 303, 567, 630 },
{ 312, 347, 648, 720 },
{ 351, 390, 729, 810 },
{ 312, 347, 648, 720 },
{ 351, 390, 729, 810 },
{ 390, 433, 810, 900 },
{ 390, 433, 810, 900 },
{ 429, 477, 891, 990 },
};
static int ieee80211_ampdu_age = -1;
SYSCTL_PROC(_net_wlan, OID_AUTO, ampdu_age, CTLTYPE_INT | CTLFLAG_RW,
&ieee80211_ampdu_age, 0, ieee80211_sysctl_msecs_ticks, "I",
"AMPDU max reorder age (ms)");
static int ieee80211_recv_bar_ena = 1;
SYSCTL_INT(_net_wlan, OID_AUTO, recv_bar, CTLFLAG_RW, &ieee80211_recv_bar_ena,
0, "BAR frame processing (ena/dis)");
static int ieee80211_addba_timeout = -1;
SYSCTL_PROC(_net_wlan, OID_AUTO, addba_timeout, CTLTYPE_INT | CTLFLAG_RW,
&ieee80211_addba_timeout, 0, ieee80211_sysctl_msecs_ticks, "I",
"ADDBA request timeout (ms)");
static int ieee80211_addba_backoff = -1;
SYSCTL_PROC(_net_wlan, OID_AUTO, addba_backoff, CTLTYPE_INT | CTLFLAG_RW,
&ieee80211_addba_backoff, 0, ieee80211_sysctl_msecs_ticks, "I",
"ADDBA request backoff (ms)");
static int ieee80211_addba_maxtries = 3;
SYSCTL_INT(_net_wlan, OID_AUTO, addba_maxtries, CTLFLAG_RW,
&ieee80211_addba_maxtries, 0, "max ADDBA requests sent before backoff");
static int ieee80211_bar_timeout = -1;
static int ieee80211_bar_maxtries = 50;
static ieee80211_recv_action_func ht_recv_action_ba_addba_request;
static ieee80211_recv_action_func ht_recv_action_ba_addba_response;
static ieee80211_recv_action_func ht_recv_action_ba_delba;
static ieee80211_recv_action_func ht_recv_action_ht_mimopwrsave;
static ieee80211_recv_action_func ht_recv_action_ht_txchwidth;
static ieee80211_send_action_func ht_send_action_ba_addba;
static ieee80211_send_action_func ht_send_action_ba_delba;
static ieee80211_send_action_func ht_send_action_ht_txchwidth;
static void
ieee80211_ht_init(void)
{
ieee80211_ampdu_age = msecs_to_ticks(500);
ieee80211_addba_timeout = msecs_to_ticks(250);
ieee80211_addba_backoff = msecs_to_ticks(10*1000);
ieee80211_bar_timeout = msecs_to_ticks(250);
ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA,
IEEE80211_ACTION_BA_ADDBA_REQUEST, ht_recv_action_ba_addba_request);
ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA,
IEEE80211_ACTION_BA_ADDBA_RESPONSE, ht_recv_action_ba_addba_response);
ieee80211_recv_action_register(IEEE80211_ACTION_CAT_BA,
IEEE80211_ACTION_BA_DELBA, ht_recv_action_ba_delba);
ieee80211_recv_action_register(IEEE80211_ACTION_CAT_HT,
IEEE80211_ACTION_HT_MIMOPWRSAVE, ht_recv_action_ht_mimopwrsave);
ieee80211_recv_action_register(IEEE80211_ACTION_CAT_HT,
IEEE80211_ACTION_HT_TXCHWIDTH, ht_recv_action_ht_txchwidth);
ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA,
IEEE80211_ACTION_BA_ADDBA_REQUEST, ht_send_action_ba_addba);
ieee80211_send_action_register(IEEE80211_ACTION_CAT_BA,
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);
ieee80211_send_action_register(IEEE80211_ACTION_CAT_HT,
IEEE80211_ACTION_HT_TXCHWIDTH, ht_send_action_ht_txchwidth);
}
SYSINIT(wlan_ht, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_ht_init, NULL);
static int ieee80211_ampdu_enable(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap);
static int ieee80211_addba_request(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap,
int dialogtoken, int baparamset, int batimeout);
static int ieee80211_addba_response(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap,
int code, int baparamset, int batimeout);
static void ieee80211_addba_stop(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap);
static void null_addba_response_timeout(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap);
static void ieee80211_bar_response(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap, int status);
static void ampdu_tx_stop(struct ieee80211_tx_ampdu *tap);
static void bar_stop_timer(struct ieee80211_tx_ampdu *tap);
static int ampdu_rx_start(struct ieee80211_node *, struct ieee80211_rx_ampdu *,
int baparamset, int batimeout, int baseqctl);
static void ampdu_rx_stop(struct ieee80211_node *, struct ieee80211_rx_ampdu *);
void
ieee80211_ht_attach(struct ieee80211com *ic)
{
ic->ic_recv_action = ieee80211_recv_action;
ic->ic_send_action = ieee80211_send_action;
ic->ic_ampdu_enable = ieee80211_ampdu_enable;
ic->ic_addba_request = ieee80211_addba_request;
ic->ic_addba_response = ieee80211_addba_response;
ic->ic_addba_response_timeout = null_addba_response_timeout;
ic->ic_addba_stop = ieee80211_addba_stop;
ic->ic_bar_response = ieee80211_bar_response;
ic->ic_ampdu_rx_start = ampdu_rx_start;
ic->ic_ampdu_rx_stop = ampdu_rx_stop;
ic->ic_htprotmode = IEEE80211_PROT_RTSCTS;
ic->ic_curhtprotmode = IEEE80211_HTINFO_OPMODE_PURE;
}
void
ieee80211_ht_detach(struct ieee80211com *ic)
{
}
void
ieee80211_ht_vattach(struct ieee80211vap *vap)
{
vap->iv_ampdu_rxmax = IEEE80211_HTCAP_MAXRXAMPDU_8K;
vap->iv_ampdu_density = IEEE80211_HTCAP_MPDUDENSITY_NA;
vap->iv_ampdu_limit = vap->iv_ampdu_rxmax;
vap->iv_amsdu_limit = vap->iv_htcaps & IEEE80211_HTCAP_MAXAMSDU;
vap->iv_ampdu_mintraffic[WME_AC_BK] = 128;
vap->iv_ampdu_mintraffic[WME_AC_BE] = 64;
vap->iv_ampdu_mintraffic[WME_AC_VO] = 32;
vap->iv_ampdu_mintraffic[WME_AC_VI] = 32;
if (vap->iv_htcaps & IEEE80211_HTC_HT) {
vap->iv_flags_ht |= IEEE80211_FHT_HT
| IEEE80211_FHT_HTCOMPAT
;
if (vap->iv_htcaps & IEEE80211_HTCAP_SHORTGI20)
vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI20;
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;
}
if (vap->iv_htcaps & IEEE80211_HTC_RIFS)
vap->iv_flags_ht |= IEEE80211_FHT_RIFS;
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;
if (vap->iv_htcaps & IEEE80211_HTCAP_TXSTBC)
vap->iv_flags_ht |= IEEE80211_FHT_STBC_TX;
if (vap->iv_htcaps & IEEE80211_HTCAP_RXSTBC)
vap->iv_flags_ht |= IEEE80211_FHT_STBC_RX;
}
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)
{
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) {
ic_printf(ic, "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 {
ic_printf(ic, "MCS %d: %d%sMbps\n", range->minmcs,
minrate/2, ((minrate & 0x1) != 0 ? ".5" : ""));
}
}
}
static void
ht_announce(struct ieee80211com *ic, enum ieee80211_phymode mode)
{
const char *modestr = ieee80211_phymode_name[mode];
ic_printf(ic, "%s MCS 20MHz\n", modestr);
ht_rateprint(ic, mode, 0);
if (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20) {
ic_printf(ic, "%s MCS 20MHz SGI\n", modestr);
ht_rateprint(ic, mode, 1);
}
if (ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) {
ic_printf(ic, "%s MCS 40MHz:\n", modestr);
ht_rateprint(ic, mode, 2);
}
if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
(ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40)) {
ic_printf(ic, "%s MCS 40MHz SGI:\n", modestr);
ht_rateprint(ic, mode, 3);
}
}
void
ieee80211_ht_announce(struct ieee80211com *ic)
{
if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
isset(ic->ic_modecaps, IEEE80211_MODE_11NG))
ic_printf(ic, "%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
}
struct mbuf *
ieee80211_decap_amsdu(struct ieee80211_node *ni, struct mbuf *m)
{
struct ieee80211vap *vap = ni->ni_vap;
int framelen;
struct mbuf *n;
m_adj(m, sizeof(struct ether_header));
vap->iv_stats.is_amsdu_decap++;
for (;;) {
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);
return NULL;
}
vap->iv_deliver_data(vap, ni, m);
m = n;
m_adj(m, roundup2(framelen, 4) - framelen);
}
return m;
}
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));
}
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_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;
}
int
ieee80211_ampdu_rx_start_ext(struct ieee80211_node *ni, int tid, int seq, int baw)
{
struct ieee80211_rx_ampdu *rap;
rap = &ni->ni_rx_ampdu[tid];
if (rap->rxa_flags & IEEE80211_AGGR_RUNNING) {
ampdu_rx_purge(rap);
}
memset(rap, 0, sizeof(*rap));
rap->rxa_wnd = (baw== 0) ?
IEEE80211_AGGR_BAWMAX : min(baw, IEEE80211_AGGR_BAWMAX);
rap->rxa_start = seq;
rap->rxa_flags |= IEEE80211_AGGR_RUNNING | IEEE80211_AGGR_XCHGPEND;
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N, ni,
"%s: tid=%d, start=%d, wnd=%d, flags=0x%08x\n",
__func__,
tid,
seq,
rap->rxa_wnd,
rap->rxa_flags);
return 0;
}
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);
}
static __inline void
ampdu_dispatch(struct ieee80211_node *ni, struct mbuf *m)
{
m->m_flags |= M_AMPDU_MPDU;
(void) ieee80211_input(ni, m, 0, 0);
}
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;
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 (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;
}
rap->rxa_start = IEEE80211_SEQ_ADD(rap->rxa_start, i);
vap->iv_stats.is_ampdu_rx_oor += i;
}
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;
}
}
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;
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 (rap->rxa_qframes != 0) {
int n = rap->rxa_qframes, j;
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;
}
rap->rxa_start = seqno;
}
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
#define CONSUMED 1
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"));
wh = mtod(m, struct ieee80211_qosframe *);
if (wh->i_fc[0] != IEEE80211_FC0_QOSDATA) {
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) {
return PROCESS;
}
rxseq = le16toh(*(uint16_t *)wh->i_seq);
if ((rxseq & IEEE80211_SEQ_FRAG_MASK) != 0) {
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) {
if (rap->rxa_qframes != 0) {
KASSERT(rap->rxa_m[0] == NULL, ("unexpected dup"));
ampdu_dispatch(ni, m);
ampdu_rx_dispatch(rap, ni);
return CONSUMED;
} else {
rap->rxa_start = IEEE80211_SEQ_INC(rxseq);
return PROCESS;
}
}
off = IEEE80211_SEQ_SUB(rxseq, rap->rxa_start);
if (off < rap->rxa_wnd) {
if (rap->rxa_qframes != 0) {
if (ticks - rap->rxa_age > ieee80211_ampdu_age) {
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 {
rap->rxa_age = ticks;
}
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) {
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++;
ampdu_rx_flush_upto(ni, rap,
IEEE80211_SEQ_SUB(rxseq, rap->rxa_wnd-1));
goto again;
} else {
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
}
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 *);
tid = MS(le16toh(wh->i_ctl), IEEE80211_BAR_TID);
rap = &ni->ni_rx_ampdu[tid];
if ((rap->rxa_flags & IEEE80211_AGGR_XCHGPEND) == 0) {
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;
off = IEEE80211_SEQ_SUB(rxseq, rap->rxa_start);
if (off < IEEE80211_SEQ_BA_RANGE) {
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) {
rap->rxa_start = rxseq;
}
} else {
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);
}
}
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 (%p)",
__func__,
ni);
if (ni->ni_flags & IEEE80211_NODE_HT) {
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N,
ni,
"%s: calling cleanup (%p)",
__func__, ni);
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;
ieee80211_txampdu_init_pps(tap);
}
ni->ni_flags |= IEEE80211_NODE_HT | IEEE80211_NODE_AMPDU;
}
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 (%p)",
__func__, ni);
KASSERT(ni->ni_flags & IEEE80211_NODE_HT, ("not an HT node"));
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;
}
void
ieee80211_ht_node_age(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
uint8_t tid;
KASSERT(ni->ni_flags & IEEE80211_NODE_HT, ("not an HT sta"));
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;
if (ticks - rap->rxa_age > ieee80211_ampdu_age) {
vap->iv_stats.is_ampdu_rx_age += rap->rxa_qframes;
ampdu_rx_flush(ni, rap);
}
}
}
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);
}
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) {
if (flags & IEEE80211_FHT_USEHT40) {
if (!IEEE80211_IS_CHAN_HT40(chan)) {
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)) {
c = ieee80211_find_channel(ic, chan->ic_freq,
chan->ic_flags &~ IEEE80211_CHAN_HT);
if (c != NULL)
chan = c;
}
return chan;
}
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"));
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;
ni->ni_htopmode = 0;
ni->ni_htstbc = 0;
for (tid = 0; tid < WME_NUM_TID; tid++) {
tap = &ni->ni_tx_ampdu[tid];
tap->txa_tid = tid;
ieee80211_txampdu_init_pps(tap);
}
ni->ni_flags |= IEEE80211_NODE_HT | IEEE80211_NODE_AMPDU;
}
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);
}
}
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);
}
}
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);
}
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);
}
void
ieee80211_htprot_update(struct ieee80211com *ic, int protmode)
{
#define OPMODE(x) SM(x, IEEE80211_HTINFO_OPMODE)
IEEE80211_LOCK(ic);
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)) {
ic->ic_curhtprotmode = protmode;
htinfo_notify(ic);
}
IEEE80211_UNLOCK(ic);
#undef OPMODE
}
void
ieee80211_ht_timeout(struct ieee80211com *ic)
{
IEEE80211_LOCK_ASSERT(ic);
if ((ic->ic_flags_ht & IEEE80211_FHT_NONHT_PR) &&
ieee80211_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);
}
}
void
ieee80211_parse_htcap(struct ieee80211_node *ni, const uint8_t *ie)
{
if (ie[0] == IEEE80211_ELEMID_VENDOR) {
ni->ni_flags |= IEEE80211_NODE_HTCOMPAT;
ie += 4;
} else
ni->ni_flags &= ~IEEE80211_NODE_HTCOMPAT;
ni->ni_htcap = le16dec(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 = le16dec(&htinfo->hi_byte2);
ni->ni_htopmode = SM(w, IEEE80211_HTINFO_OPMODE);
w = le16dec(&htinfo->hi_byte45);
ni->ni_htstbc = SM(w, IEEE80211_HTINFO_BASIC_STBCMCS);
}
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);
}
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) {
c = ieee80211_find_channel(ic, ni->ni_chan->ic_freq, chanflags);
if (c == NULL && (htflags & IEEE80211_CHAN_HT40)) {
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
}
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;
}
}
ni->ni_chw = IEEE80211_IS_CHAN_HT40(ni->ni_chan)? 40 : 20;
return (ret);
}
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:
ni->ni_flags &= ~IEEE80211_NODE_MIMO_PS;
ni->ni_flags &= ~IEEE80211_NODE_MIMO_RTS;
break;
}
return (oflags ^ ni->ni_flags);
}
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;
}
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;
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);
}
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);
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);
}
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);
}
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)
{
#if defined(__DragonFly__)
callout_init_mp(&tap->txa_timer);
#else
callout_init(&tap->txa_timer, 1);
#endif
tap->txa_flags |= IEEE80211_AGGR_SETUP;
tap->txa_lastsample = ticks;
}
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)));
ic->ic_addba_stop(ni, tap);
bar_stop_timer(tap);
ieee80211_txampdu_init_pps(tap);
tap->txa_flags &= ~(IEEE80211_AGGR_SETUP | IEEE80211_AGGR_NAK);
}
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;
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)
{
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)
{
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)
{
}
static int
ieee80211_addba_request(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap,
int dialogtoken, int baparamset, int batimeout)
{
int bufsiz;
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;
}
int
ieee80211_ampdu_tx_request_ext(struct ieee80211_node *ni, int tid)
{
struct ieee80211_tx_ampdu *tap;
if (tid < 0 || tid > 15)
return (0);
tap = &ni->ni_tx_ampdu[tid];
if ((tap->txa_flags & IEEE80211_AGGR_SETUP) == 0) {
ampdu_tx_setup(tap);
}
tap->txa_flags &= ~IEEE80211_AGGR_NAK;
addba_start_timeout(tap);
return (1);
}
int
ieee80211_ampdu_tx_request_active_ext(struct ieee80211_node *ni, int tid,
int status)
{
struct ieee80211_tx_ampdu *tap;
if (tid < 0 || tid > 15)
return (0);
tap = &ni->ni_tx_ampdu[tid];
addba_stop_timeout(tap);
if (status == 1) {
tap->txa_flags |= IEEE80211_AGGR_RUNNING;
tap->txa_attempts = 0;
} else {
tap->txa_flags |= IEEE80211_AGGR_NAK;
}
return (1);
}
static int
ieee80211_addba_response(struct ieee80211_node *ni,
struct ieee80211_tx_ampdu *tap,
int status, int baparamset, int batimeout)
{
int bufsiz, tid;
addba_stop_timeout(tap);
if (status == IEEE80211_STATUS_SUCCESS) {
bufsiz = MS(baparamset, IEEE80211_BAPS_BUFSIZ);
tap->txa_wnd = (bufsiz == 0) ?
IEEE80211_AGGR_BAWMAX : min(bufsiz, IEEE80211_AGGR_BAWMAX);
tid = MS(baparamset, IEEE80211_BAPS_TID);
tap->txa_flags |= IEEE80211_AGGR_RUNNING;
tap->txa_attempts = 0;
} else {
tap->txa_flags |= IEEE80211_AGGR_NAK;
}
return 1;
}
static void
ieee80211_addba_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
{
addba_stop_timeout(tap);
if (tap->txa_flags & IEEE80211_AGGR_RUNNING) {
tap->txa_flags &= ~IEEE80211_AGGR_RUNNING;
}
tap->txa_attempts = 0;
}
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 = le16dec(frm+3);
batimeout = le16dec(frm+5);
baseqctl = le16dec(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];
args[0] = dialogtoken;
if ((ni->ni_flags & IEEE80211_NODE_AMPDU_RX) &&
(vap->iv_flags_ht & IEEE80211_FHT_AMPDU_RX)) {
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;
}
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 = le16dec(frm+3);
baparamset = le16dec(frm+5);
tid = MS(baparamset, IEEE80211_BAPS_TID);
bufsiz = MS(baparamset, IEEE80211_BAPS_BUFSIZ);
policy = MS(baparamset, IEEE80211_BAPS_POLICY);
batimeout = le16dec(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;
}
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 %d, "
"received %d, tid %d code %d",
tap->txa_flags & IEEE80211_AGGR_IMMEDIATE,
policy, tid, code);
vap->iv_stats.is_addba_badpolicy++;
return 0;
}
#if 0
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 = le16dec(frm+2);
code = le16dec(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;
}
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;
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;
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;
}
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;
if (tap->txa_attempts >= ieee80211_addba_maxtries &&
ieee80211_time_after(ticks, tap->txa_nextrequest)) {
return 0;
}
IEEE80211_NOTE(vap, IEEE80211_MSG_11N, ni,
"enable AMPDU on tid %d (%s), avgpps %d pkts %d attempt %d",
tap->txa_tid, ieee80211_wme_acnames[TID_TO_WME_AC(tap->txa_tid)],
tap->txa_avgpps, tap->txa_pkts, tap->txa_attempts);
return 1;
}
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;
if ((tap->txa_flags & IEEE80211_AGGR_SETUP) == 0) {
ampdu_tx_setup(tap);
}
tap->txa_flags &= ~IEEE80211_AGGR_NAK;
dialogtoken = (tokens+1) % 63;
tid = tap->txa_tid;
tap->txa_start = ni->ni_txseqs[tid];
args[0] = dialogtoken;
args[1] = 0;
args[2] = IEEE80211_BAPS_POLICY_IMMEDIATE
| SM(tid, IEEE80211_BAPS_TID)
| SM(IEEE80211_AGGR_BAWMAX, IEEE80211_BAPS_BUFSIZ)
;
args[3] = 0;
if (!ic->ic_addba_request(ni, tap, dialogtoken, args[2], args[3])) {
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));
tap->txa_attempts = ieee80211_addba_maxtries;
if (tap->txa_nextrequest <= ticks)
tap->txa_nextrequest = ticks + ieee80211_addba_backoff;
return 0;
}
tokens = dialogtoken;
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);
}
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];
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 (%s))",
__func__, tap->txa_tid, reason,
ieee80211_reason_to_string(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;
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 (%s))", __func__, tap->txa_tid, reason,
ieee80211_reason_to_string(reason));
vap->iv_stats.is_ampdu_stop_failed++;
}
}
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);
if ((tap->txa_flags & IEEE80211_AGGR_BARPEND) == 0)
return;
if (tap->txa_attempts >= ieee80211_bar_maxtries) {
struct ieee80211com *ic = ni->ni_ic;
ni->ni_vap->iv_stats.is_ampdu_bar_tx_fail++;
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__);
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++;
if ((tap->txa_flags & IEEE80211_AGGR_BARPEND) &&
callout_pending(&tap->txa_timer)) {
struct ieee80211com *ic = ni->ni_ic;
if (status == 0)
bar_stop_timer(tap);
ic->ic_bar_response(ni, tap, status);
}
}
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) {
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);
tap->txa_start = tap->txa_seqpending;
tap->txa_flags &= ~IEEE80211_AGGR_BARPEND;
}
}
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) {
return EINVAL;
}
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);
}
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);
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);
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);
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);
tap->txa_flags &= ~IEEE80211_AGGR_BARPEND;
vap->iv_stats.is_ampdu_bar_tx_fail++;
return ret;
}
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;
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)
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)
+ sizeof(struct ieee80211_action_ba_addbaresponse)
);
if (m != NULL) {
*frm++ = category;
*frm++ = action;
*frm++ = args[0];
if (action == IEEE80211_ACTION_BA_ADDBA_RESPONSE)
ADDSHORT(frm, args[1]);
ADDSHORT(frm, args[2]);
ADDSHORT(frm, args[3]);
if (action == IEEE80211_ACTION_BA_ADDBA_REQUEST)
ADDSHORT(frm, args[4]);
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 (%s)",
args[0], args[1], args[2], ieee80211_reason_to_string(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)
+ sizeof(struct ieee80211_action_ba_addbaresponse)
);
if (m != NULL) {
*frm++ = category;
*frm++ = action;
ADDSHORT(frm, baparamset);
ADDSHORT(frm, args[2]);
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)
+ 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
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;
txparams |= 0x2;
txparams |= (ic->ic_txstream - 1) << 2;
if (ic->ic_htcaps & IEEE80211_HTC_TXUNEQUAL)
txparams |= 0x16;
} else
txparams = 0;
frm[12] = txparams;
}
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;
caps = vap->iv_htcaps & 0xffff;
if (vap->iv_opmode == IEEE80211_M_STA) {
if (vap->iv_flags_ht & IEEE80211_FHT_USEHT40)
caps |= IEEE80211_HTCAP_CHWIDTH40;
else
caps &= ~IEEE80211_HTCAP_CHWIDTH40;
rxmax = MS(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
density = MS(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
IEEE80211_DPRINTF(vap, IEEE80211_MSG_11N,
"%s: advertised rxmax=%d, density=%d, vap rxmax=%d, density=%d\n",
__func__,
rxmax,
density,
vap->iv_ampdu_rxmax,
vap->iv_ampdu_density);
if (rxmax > vap->iv_ampdu_rxmax)
rxmax = vap->iv_ampdu_rxmax;
if (vap->iv_ampdu_density > density)
density = vap->iv_ampdu_density;
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 {
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;
}
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;
if ((vap->iv_flags_ht & IEEE80211_FHT_STBC_RX) == 0)
caps &= ~IEEE80211_HTCAP_RXSTBC;
ADDSHORT(frm, caps);
*frm = SM(rxmax, IEEE80211_HTCAP_MAXRXAMPDU)
| SM(density, IEEE80211_HTCAP_MPDUDENSITY)
;
frm++;
memset(frm, 0, sizeof(struct ieee80211_ie_htcap) -
__offsetof(struct ieee80211_ie_htcap, hc_mcsset));
ieee80211_set_mcsset(ni->ni_ic, frm);
frm += __offsetof(struct ieee80211_ie_htcap, hc_extcap) -
__offsetof(struct ieee80211_ie_htcap, hc_mcsset);
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
}
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);
}
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);
}
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) {
setbit(frm, r);
}
}
}
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;
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;
ht->hi_byte2 = (ht->hi_byte2 &~ PROTMODE) | ic->ic_curhtprotmode;
ieee80211_free_node(ni);
#undef PROTMODE
}
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;
memset(frm, 0, sizeof(struct ieee80211_ie_htinfo) - 2);
*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;
ieee80211_set_basic_htrates(frm, &ni->ni_htrates);
frm += sizeof(struct ieee80211_ie_htinfo) -
__offsetof(struct ieee80211_ie_htinfo, hi_basicmcsset);
return frm;
}
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);
}
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);
}
