102 lines
3.4 KiB
Diff
102 lines
3.4 KiB
Diff
Improve the beacon miss handling. Instead of just dropping the connection,
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send a directed probe request to the AP to see if it's still responding.
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Schedule a software beacon miss timer in this case, which adds a timeout
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for the APs probe response.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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--- a/net80211/ieee80211_input.c
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+++ b/net80211/ieee80211_input.c
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@@ -3398,12 +3398,17 @@
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}
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/* WDS/Repeater: re-schedule software beacon timer for
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- * STA. */
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- if ((vap->iv_state == IEEE80211_S_RUN) &&
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- (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)) {
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- mod_timer(&vap->iv_swbmiss,
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+ * STA. Reset consecutive bmiss counter as well */
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+ IEEE80211_LOCK_IRQ(ic);
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+ if (vap->iv_state == IEEE80211_S_RUN) {
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+ vap->iv_bmiss_count = 0;
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+ if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)
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+ mod_timer(&vap->iv_swbmiss,
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jiffies + vap->iv_swbmiss_period);
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+ else
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+ del_timer(&vap->iv_swbmiss);
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}
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+ IEEE80211_UNLOCK_IRQ(ic);
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/* If scanning, pass the info to the scan module.
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* Otherwise, check if it's the right time to do
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--- a/net80211/ieee80211_proto.c
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+++ b/net80211/ieee80211_proto.c
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@@ -1209,6 +1209,8 @@
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}
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/* XXX locking */
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TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
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+ int count;
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+
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IEEE80211_DPRINTF(vap,
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IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
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"%s\n", "beacon miss");
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@@ -1221,6 +1223,29 @@
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if (vap->iv_opmode != IEEE80211_M_STA ||
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vap->iv_state != IEEE80211_S_RUN)
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continue;
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+
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+ IEEE80211_LOCK_IRQ(ic);
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+ count = vap->iv_bmiss_count++;
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+ if (count) {
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+ /* if the counter was already above zero, reset it
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+ * here, since we're going to do the bmiss handling
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+ * in any case */
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+ vap->iv_bmiss_count = 0;
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+ } else {
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+ /* schedule the software beacon miss timer, it will be
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+ * cancelled, if the probe request is acked */
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+ mod_timer(&vap->iv_swbmiss, jiffies + vap->iv_swbmiss_period);
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+ }
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+ IEEE80211_UNLOCK_IRQ(ic);
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+
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+ if (!count) {
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+ ieee80211_send_probereq(vap->iv_bss, vap->iv_myaddr,
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+ vap->iv_bss->ni_bssid, vap->iv_bss->ni_bssid,
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+ vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen,
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+ NULL, 0);
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+ continue;
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+ }
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+
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if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
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#ifdef ATH_SUPERG_DYNTURBO
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/*
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@@ -1617,14 +1642,14 @@
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}
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/* WDS/Repeater: Start software beacon timer for STA */
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+ vap->iv_swbmiss.function = ieee80211_sta_swbmiss;
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+ vap->iv_swbmiss.data = (unsigned long) vap;
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+ vap->iv_swbmiss_period = IEEE80211_TU_TO_JIFFIES(
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+ vap->iv_ic->ic_bmissthreshold * ni->ni_intval);
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+
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if (ostate != IEEE80211_S_RUN &&
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(vap->iv_opmode == IEEE80211_M_STA &&
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vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)) {
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- vap->iv_swbmiss.function = ieee80211_sta_swbmiss;
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- vap->iv_swbmiss.data = (unsigned long) vap;
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- vap->iv_swbmiss_period = IEEE80211_TU_TO_JIFFIES(
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- vap->iv_ic->ic_bmissthreshold * ni->ni_intval);
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-
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mod_timer(&vap->iv_swbmiss, jiffies + vap->iv_swbmiss_period);
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}
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--- a/net80211/ieee80211_var.h
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+++ b/net80211/ieee80211_var.h
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@@ -282,6 +282,7 @@
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struct timer_list iv_swbmiss; /* software beacon miss timer */
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u_int16_t iv_swbmiss_period; /* software beacon miss timer period */
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+ u_int16_t iv_bmiss_count; /* consecutive beacon miss counter */
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struct ieee80211_nsparams iv_nsparams; /* new state parameters for tasklet for stajoin1 */
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struct IEEE80211_TQ_STRUCT iv_stajoin1tq; /* tasklet for newstate action called from stajoin1tq */
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unsigned int iv_nsdone; /* Done with scheduled newstate tasklet */
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