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-rw-r--r--package/madwifi/patches/448-beacon_handling_fixes.patch407
1 files changed, 407 insertions, 0 deletions
diff --git a/package/madwifi/patches/448-beacon_handling_fixes.patch b/package/madwifi/patches/448-beacon_handling_fixes.patch
new file mode 100644
index 000000000..9c0f912e4
--- /dev/null
+++ b/package/madwifi/patches/448-beacon_handling_fixes.patch
@@ -0,0 +1,407 @@
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -160,7 +160,7 @@ static int ath_check_beacon_done(struct
+ static void ath_beacon_send(struct ath_softc *, int *, uint64_t hw_tsf);
+ static void ath_beacon_return(struct ath_softc *, struct ath_buf *);
+ static void ath_beacon_free(struct ath_softc *);
+-static void ath_beacon_config(struct ath_softc *, struct ieee80211vap *);
++static void ath_beacon_config(struct ath_softc *, struct ieee80211vap *, int);
+ static void ath_hw_beacon_stop(struct ath_softc *sc);
+ static int ath_desc_alloc(struct ath_softc *);
+ static void ath_desc_free(struct ath_softc *);
+@@ -387,13 +387,11 @@ static void ath_set_timing(struct ath_so
+ /* calibrate every 30 secs in steady state but check every second at first. */
+ static int ath_calinterval = ATH_SHORT_CALINTERVAL;
+ static int ath_xchanmode = AH_TRUE; /* enable extended channels */
+-static int ath_maxvaps = ATH_MAXVAPS_DEFAULT; /* set default maximum vaps */
+ static int bstuck_thresh = BSTUCK_THRESH; /* Stuck beacon count required for reset */
+ static char *autocreate = NULL;
+ static char *ratectl = DEF_RATE_CTL;
+ static int rfkill = 0;
+ static int tpc = 1;
+-static int maxvaps = -1;
+ static int xchanmode = -1;
+ #include "ath_wprobe.c"
+ static int beacon_cal = 1;
+@@ -432,7 +430,6 @@ static struct notifier_block ath_event_b
+
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,52))
+ MODULE_PARM(beacon_cal, "i");
+-MODULE_PARM(maxvaps, "i");
+ MODULE_PARM(xchanmode, "i");
+ MODULE_PARM(rfkill, "i");
+ #ifdef ATH_CAP_TPC
+@@ -444,7 +441,6 @@ MODULE_PARM(ratectl, "s");
+ #else
+ #include <linux/moduleparam.h>
+ module_param(beacon_cal, int, 0600);
+-module_param(maxvaps, int, 0600);
+ module_param(xchanmode, int, 0600);
+ module_param(rfkill, int, 0600);
+ #ifdef ATH_CAP_TPC
+@@ -454,7 +450,6 @@ module_param(bstuck_thresh, int, 0600);
+ module_param(autocreate, charp, 0600);
+ module_param(ratectl, charp, 0600);
+ #endif
+-MODULE_PARM_DESC(maxvaps, "Maximum VAPs");
+ MODULE_PARM_DESC(xchanmode, "Enable/disable extended channel mode");
+ MODULE_PARM_DESC(rfkill, "Enable/disable RFKILL capability");
+ #ifdef ATH_CAP_TPC
+@@ -512,7 +507,7 @@ MODULE_PARM_DESC(ieee80211_debug, "Load-
+ * and use the higher bits as the index of the VAP.
+ */
+ #define ATH_SET_VAP_BSSID_MASK(bssid_mask) \
+- ((bssid_mask)[0] &= ~(((ath_maxvaps-1) << 2) | 0x02))
++ ((bssid_mask)[0] &= ~(((ATH_MAXVAPS_BCN-1) << 2) | 0x02))
+ #define ATH_GET_VAP_ID(bssid) ((bssid)[0] >> 2)
+ #define ATH_SET_VAP_BSSID(bssid, id) \
+ do { \
+@@ -604,8 +599,8 @@ ath_attach(u_int16_t devid, struct net_d
+
+ /* Allocate space for dynamically determined maximum VAP count */
+ sc->sc_bslot =
+- kmalloc(ath_maxvaps * sizeof(struct ieee80211vap*), GFP_KERNEL);
+- memset(sc->sc_bslot, 0, ath_maxvaps * sizeof(struct ieee80211vap*));
++ kmalloc(ATH_MAXVAPS_BCN * sizeof(struct ieee80211vap*), GFP_KERNEL);
++ memset(sc->sc_bslot, 0, ATH_MAXVAPS_BCN * sizeof(struct ieee80211vap*));
+
+ /*
+ * Cache line size is used to size and align various
+@@ -694,13 +689,6 @@ ath_attach(u_int16_t devid, struct net_d
+ for (i = 0; i < sc->sc_keymax; i++)
+ ath_hal_keyreset(ah, i);
+
+- if (maxvaps != -1) {
+- ath_maxvaps = maxvaps;
+- if (ath_maxvaps < ATH_MAXVAPS_MIN)
+- ath_maxvaps = ATH_MAXVAPS_MIN;
+- else if (ath_maxvaps > ATH_MAXVAPS_MAX)
+- ath_maxvaps = ATH_MAXVAPS_MAX;
+- }
+ if (xchanmode != -1)
+ ath_xchanmode = xchanmode;
+ error = ath_getchannels(dev);
+@@ -1349,12 +1337,6 @@ ath_vap_create(struct ieee80211com *ic,
+ return NULL;
+ }
+
+- if (sc->sc_nvaps >= ath_maxvaps) {
+- EPRINTF(sc, "Too many virtual APs (%d already exist).\n",
+- sc->sc_nvaps);
+- return NULL;
+- }
+-
+ dev = alloc_etherdev(sizeof(struct ath_vap) + sc->sc_rc->arc_vap_space);
+ if (dev == NULL) {
+ /* XXX msg */
+@@ -1424,7 +1406,7 @@ ath_vap_create(struct ieee80211com *ic,
+ TAILQ_FOREACH(v, &ic->ic_vaps, iv_next)
+ id_mask |= (1 << ATH_GET_VAP_ID(v->iv_myaddr));
+
+- for (id = 0; id < ath_maxvaps; id++) {
++ for (id = 0; id < ATH_MAXVAPS_BCN; id++) {
+ /* get the first available slot */
+ if ((id_mask & (1 << id)) == 0) {
+ ATH_SET_VAP_BSSID(vap->iv_myaddr, id);
+@@ -1451,11 +1433,11 @@ ath_vap_create(struct ieee80211com *ic,
+ /* Assign the VAP to a beacon xmit slot. As
+ * above, this cannot fail to find one. */
+ avp->av_bslot = 0;
+- for (slot = 0; slot < ath_maxvaps; slot++)
++ for (slot = 0; slot < ATH_MAXVAPS_BCN; slot++)
+ if (sc->sc_bslot[slot] == NULL) {
+ /* XXX: Hack, space out slots to better
+ * deal with misses. */
+- if (slot + 1 < ath_maxvaps &&
++ if (slot + 1 < ATH_MAXVAPS_BCN &&
+ sc->sc_bslot[slot+1] == NULL) {
+ avp->av_bslot = slot + 1;
+ break;
+@@ -1463,8 +1445,11 @@ ath_vap_create(struct ieee80211com *ic,
+ avp->av_bslot = slot;
+ /* NB: keep looking for a double slot */
+ }
+- KASSERT(sc->sc_bslot[avp->av_bslot] == NULL,
+- ("beacon slot %u not empty?", avp->av_bslot));
++ if (sc->sc_bslot[avp->av_bslot]) {
++ free_netdev(dev);
++ return NULL;
++ }
++
+ sc->sc_bslot[avp->av_bslot] = vap;
+ sc->sc_nbcnvaps++;
+
+@@ -1475,15 +1460,7 @@ ath_vap_create(struct ieee80211com *ic,
+ * of staggered beacons.
+ */
+ /* XXX check for beacon interval too small */
+- if (ath_maxvaps > 4) {
+- DPRINTF(sc, ATH_DEBUG_BEACON,
+- "Staggered beacons are not "
+- "possible with maxvaps set "
+- "to %d.\n", ath_maxvaps);
+- sc->sc_stagbeacons = 0;
+- } else {
+- sc->sc_stagbeacons = 1;
+- }
++ sc->sc_stagbeacons = 1;
+ }
+ DPRINTF(sc, ATH_DEBUG_BEACON, "sc->sc_stagbeacons %sabled\n",
+ (sc->sc_stagbeacons ? "en" : "dis"));
+@@ -1553,7 +1530,7 @@ ath_vap_create(struct ieee80211com *ic,
+ if (ath_startrecv(sc) != 0) /* restart recv */
+ EPRINTF(sc, "Unable to start receive logic.\n");
+ if (sc->sc_beacons)
+- ath_beacon_config(sc, NULL); /* restart beacons */
++ ath_beacon_config(sc, NULL, 0); /* restart beacons */
+ ath_hal_intrset(ah, sc->sc_imask);
+ }
+
+@@ -1681,7 +1658,7 @@ ath_vap_delete(struct ieee80211vap *vap)
+ if (ath_startrecv(sc) != 0) /* restart recv. */
+ EPRINTF(sc, "Unable to start receive logic.\n");
+ if (sc->sc_beacons)
+- ath_beacon_config(sc, NULL); /* restart beacons */
++ ath_beacon_config(sc, NULL, 0); /* restart beacons */
+ ath_hal_intrset(ah, sc->sc_imask);
+ }
+ }
+@@ -3066,7 +3043,7 @@ ath_reset(struct net_device *dev)
+ */
+ ath_chan_change(sc, c);
+ if (sc->sc_beacons)
+- ath_beacon_config(sc, NULL); /* restart beacons */
++ ath_beacon_config(sc, NULL, 1); /* restart beacons */
+ ath_hal_intrset(ah, sc->sc_imask);
+ ath_set_ack_bitrate(sc, sc->sc_ackrate);
+ netif_wake_queue(dev); /* restart xmit */
+@@ -4763,7 +4740,7 @@ ath_check_beacon_done(struct ath_softc *
+ /*
+ * check if the last beacon went out with the mode change flag set.
+ */
+- for (slot = 0; slot < ath_maxvaps; slot++) {
++ for (slot = 0; slot < ATH_MAXVAPS_BCN; slot++) {
+ if (sc->sc_bslot[slot]) {
+ vap = sc->sc_bslot[slot];
+ break;
+@@ -4968,7 +4945,7 @@ ath_beacon_alloc_internal(struct ath_sof
+ * has a timestamp in one beacon interval while the
+ * others get a timestamp aligned to the next interval.
+ */
+- tuadjust = (ni->ni_intval * (ath_maxvaps - avp->av_bslot)) / ath_maxvaps;
++ tuadjust = (ni->ni_intval * (ATH_MAXVAPS_BCN - avp->av_bslot)) / ATH_MAXVAPS_BCN;
+ tsfadjust = cpu_to_le64(tuadjust << 10); /* TU->TSF */
+
+ DPRINTF(sc, ATH_DEBUG_BEACON,
+@@ -5361,8 +5338,8 @@ ath_beacon_send(struct ath_softc *sc, in
+ u_int32_t tsftu;
+
+ tsftu = hw_tsf >> 10; /* NB: 64 -> 32: See note far above. */
+- slot = ((tsftu % ic->ic_lintval) * ath_maxvaps) / ic->ic_lintval;
+- vap = sc->sc_bslot[(slot + 1) % ath_maxvaps];
++ slot = ((tsftu % ic->ic_lintval) * ATH_MAXVAPS_BCN) / ic->ic_lintval;
++ vap = sc->sc_bslot[(slot + 1) % ATH_MAXVAPS_BCN];
+ DPRINTF(sc, ATH_DEBUG_BEACON_PROC,
+ "Slot %d [tsf %llu tsftu %llu intval %u] vap %p\n",
+ slot, (unsigned long long)hw_tsf,
+@@ -5377,7 +5354,7 @@ ath_beacon_send(struct ath_softc *sc, in
+ u_int32_t *bflink = NULL;
+
+ /* XXX: rotate/randomize order? */
+- for (slot = 0; slot < ath_maxvaps; slot++) {
++ for (slot = 0; slot < ATH_MAXVAPS_BCN; slot++) {
+ if ((vap = sc->sc_bslot[slot]) != NULL) {
+ if ((bf = ath_beacon_generate(
+ sc, vap,
+@@ -5418,7 +5395,7 @@ ath_beacon_send(struct ath_softc *sc, in
+ * again. If we miss a beacon for that slot then we'll be
+ * slow to transition but we'll be sure at least one beacon
+ * interval has passed. When bursting slot is always left
+- * set to ath_maxvaps so this check is a no-op.
++ * set to ATH_MAXVAPS_BCN so this check is a no-op.
+ */
+ /* XXX locking */
+ if (sc->sc_updateslot == UPDATE) {
+@@ -5526,7 +5503,7 @@ ath_beacon_free(struct ath_softc *sc)
+ * (2^(32 + 10 - 1) - 1)us is a really long time.
+ */
+ static void
+-ath_beacon_config(struct ath_softc *sc, struct ieee80211vap *vap)
++ath_beacon_config(struct ath_softc *sc, struct ieee80211vap *vap, int reset)
+ {
+ struct ieee80211com *ic = &sc->sc_ic;
+ struct ath_hal *ah = sc->sc_ah;
+@@ -5553,7 +5530,7 @@ ath_beacon_config(struct ath_softc *sc,
+ /* We should reset hw TSF only once, so we increment
+ * ni_tstamp.tsf to avoid resetting the hw TSF multiple
+ * times */
+- if (tsf == 0) {
++ if (tsf == 0 || reset) {
+ reset_tsf = 1;
+ ni->ni_tstamp.tsf = cpu_to_le64(1);
+ }
+@@ -5567,7 +5544,7 @@ ath_beacon_config(struct ath_softc *sc,
+ /* NB: the beacon interval is kept internally in TUs */
+ intval = ic->ic_lintval & HAL_BEACON_PERIOD;
+ if (sc->sc_stagbeacons)
+- intval /= ath_maxvaps; /* for staggered beacons */
++ intval /= ATH_MAXVAPS_BCN; /* for staggered beacons */
+ if ((sc->sc_nostabeacons) &&
+ (vap->iv_opmode == IEEE80211_M_HOSTAP))
+ reset_tsf = 1;
+@@ -5583,31 +5560,24 @@ ath_beacon_config(struct ath_softc *sc,
+ * time */
+ nexttbtt = intval;
+ } else if (intval) { /* NB: can be 0 for monitor mode */
+- if (tsf == 1) {
+- /* We have not received any beacons or probe
+- * responses. Since a beacon should be sent
+- * every 'intval' ms, we compute the next
+- * beacon timestamp using the hardware TSF. We
+- * ensure that it is at least FUDGE TUs ahead
+- * of the current TSF. Otherwise, we use the
+- * next beacon timestamp again */
+- nexttbtt = roundup(hw_tsftu + FUDGE, intval);
+- }
+- else if (ic->ic_opmode == IEEE80211_M_IBSS) {
+- if (tsf > hw_tsf) {
+- /* We received a beacon, but the HW TSF has
+- * not been updated (otherwise hw_tsf > tsf)
+- * We cannot use the hardware TSF, so we
+- * wait to synchronize beacons again. */
+- sc->sc_syncbeacon = 1;
+- goto ath_beacon_config_debug;
+- } else {
+- /* Normal case: we received a beacon to which
+- * we have synchronized. Make sure that nexttbtt
+- * is at least FUDGE TU ahead of hw_tsf */
+- nexttbtt = tsftu + roundup(hw_tsftu + FUDGE -
+- tsftu, intval);
+- }
++ if ((tsf > hw_tsf) && (ic->ic_opmode == IEEE80211_M_IBSS)) {
++ /* We received a beacon, but the HW TSF has
++ * not been updated (otherwise hw_tsf > tsf)
++ * We cannot use the hardware TSF, so we
++ * wait to synchronize beacons again. */
++ sc->sc_syncbeacon = 1;
++ goto ath_beacon_config_debug;
++ } else if ((tsftu + FUDGE) > hw_tsftu) {
++ if (tsftu > hw_tsftu + 2 * intval)
++ nexttbtt = roundup(hw_tsftu + FUDGE, intval);
++ else
++ nexttbtt = tsftu;
++ } else {
++ /* Normal case: we received a beacon to which
++ * we have synchronized. Make sure that nexttbtt
++ * is at least FUDGE TU ahead of hw_tsf */
++ nexttbtt = tsftu + roundup(hw_tsftu + FUDGE -
++ tsftu, intval);
+ }
+ }
+
+@@ -5730,9 +5700,6 @@ ath_beacon_config(struct ath_softc *sc,
+ ath_beacon_dturbo_config(vap, intval &
+ ~(HAL_BEACON_RESET_TSF | HAL_BEACON_ENA));
+ #endif
+- if ((nexttbtt & HAL_BEACON_PERIOD) - (ath_hal_gettsf32(ah) >> 10)
+- <= ath_hal_sw_beacon_response_time)
+- nexttbtt += intval;
+ sc->sc_nexttbtt = nexttbtt;
+
+ /* stop beacons before reconfiguring the timers to avoid race
+@@ -5889,7 +5856,7 @@ ath_desc_alloc(struct ath_softc *sc)
+
+ /* XXX allocate beacon state together with VAP */
+ error = ath_descdma_setup(sc, &sc->sc_bdma, &sc->sc_bbuf,
+- "beacon", ath_maxvaps, 1);
++ "beacon", ATH_MAXVAPS_BCN, 1);
+ if (error != 0) {
+ ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf,
+ BUS_DMA_TODEVICE);
+@@ -6680,7 +6647,7 @@ ath_recv_mgmt(struct ieee80211vap * vap,
+ /* Resync beacon timers using the tsf of the
+ * beacon frame we just received. */
+ vap->iv_flags_ext &= ~IEEE80211_FEXT_APPIE_UPDATE;
+- ath_beacon_config(sc, vap);
++ ath_beacon_config(sc, vap, 0);
+ DPRINTF(sc, ATH_DEBUG_BEACON,
+ "Updated beacon timers\n");
+ }
+@@ -9359,7 +9326,7 @@ ath_chan_set(struct ath_softc *sc, struc
+ * HW seems to turn off beacons during turbo mode switch.
+ */
+ if (sc->sc_beacons && !sc->sc_dfs_cac)
+- ath_beacon_config(sc, NULL);
++ ath_beacon_config(sc, NULL, 0);
+ /*
+ * Re-enable interrupts.
+ */
+@@ -9813,7 +9780,7 @@ ath_newstate(struct ieee80211vap *vap, e
+ ATH_DEBUG_BEACON_PROC,
+ "Beacons reconfigured by %p[%s]!\n",
+ vap, vap->iv_nickname);
+- ath_beacon_config(sc, vap);
++ ath_beacon_config(sc, vap, 1);
+ sc->sc_beacons = 1;
+ }
+ } else {
+@@ -9948,9 +9915,6 @@ ath_dfs_cac_completed(unsigned long data
+ }
+ netif_wake_queue(dev);
+ ath_reset(dev);
+- if (sc->sc_beacons) {
+- ath_beacon_config(sc, NULL);
+- }
+ dev->watchdog_timeo = 5 * HZ; /* restore normal timeout */
+ } else {
+ do_gettimeofday(&tv);
+@@ -11473,9 +11437,6 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl
+ case ATH_OUTDOOR:
+ val = ic->ic_country_outdoor;
+ break;
+- case ATH_MAXVAPS:
+- val = ath_maxvaps;
+- break;
+ case ATH_REGDOMAIN:
+ ath_hal_getregdomain(ah, &val);
+ break;
+@@ -11606,12 +11567,6 @@ static const ctl_table ath_sysctl_templa
+ .extra2 = (void *)ATH_OUTDOOR,
+ },
+ { .ctl_name = CTL_AUTO,
+- .procname = "maxvaps",
+- .mode = 0444,
+- .proc_handler = ath_sysctl_halparam,
+- .extra2 = (void *)ATH_MAXVAPS,
+- },
+- { .ctl_name = CTL_AUTO,
+ .procname = "regdomain",
+ .mode = 0644,
+ .proc_handler = ath_sysctl_halparam,
+@@ -11928,13 +11883,6 @@ static ctl_table ath_static_sysctls[] =
+ },
+ #endif
+ { .ctl_name = CTL_AUTO,
+- .procname = "maxvaps",
+- .mode = 0444,
+- .data = &ath_maxvaps,
+- .maxlen = sizeof(ath_maxvaps),
+- .proc_handler = proc_dointvec
+- },
+- { .ctl_name = CTL_AUTO,
+ .procname = "xchanmode",
+ .mode = 0444,
+ .data = &ath_xchanmode,
+--- a/ath/if_athvar.h
++++ b/ath/if_athvar.h
+@@ -211,9 +211,7 @@ static inline struct net_device *_alloc_
+ #define ATH_RXBUF 40 /* number of RX buffers */
+ #define ATH_TXBUF 200 /* number of TX buffers */
+
+-#define ATH_MAXVAPS_MIN 2 /* minimum number of beacon buffers */
+-#define ATH_MAXVAPS_MAX 64 /* maximum number of beacon buffers */
+-#define ATH_MAXVAPS_DEFAULT 4 /* default number of beacon buffers */
++#define ATH_MAXVAPS_BCN 4 /* maximum number of beacon buffers */
+
+ /* free buffer threshold to restart net dev */
+ #define ATH_TXBUF_FREE_THRESHOLD (ATH_TXBUF / 20)
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-06 02:53:37 +0000