From b910cf91f636873485856bc13e4b2a7074437639 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 13 May 2007 16:24:11 +0000 Subject: huge madwifi update - use a madwifi-ng-refcount snapshot as base, includes lots of bugfixes and performance enhancements SVN-Revision: 7211 --- .../madwifi/patches/116-adhoc_beacon_PR_1033.patch | 196 +++++++++++++++++++++ 1 file changed, 196 insertions(+) create mode 100644 package/madwifi/patches/116-adhoc_beacon_PR_1033.patch (limited to 'package/madwifi/patches/116-adhoc_beacon_PR_1033.patch') diff --git a/package/madwifi/patches/116-adhoc_beacon_PR_1033.patch b/package/madwifi/patches/116-adhoc_beacon_PR_1033.patch new file mode 100644 index 0000000000..92a147c1b3 --- /dev/null +++ b/package/madwifi/patches/116-adhoc_beacon_PR_1033.patch @@ -0,0 +1,196 @@ +diff -urN madwifi-ng-refcount-r2313-20070505.old/ath/if_ath.c madwifi-ng-refcount-r2313-20070505.dev/ath/if_ath.c +--- madwifi-ng-refcount-r2313-20070505.old/ath/if_ath.c 2007-05-13 18:17:55.862076712 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/ath/if_ath.c 2007-05-13 18:17:56.119037648 +0200 +@@ -4411,16 +4411,31 @@ + struct ieee80211com *ic = &sc->sc_ic; + struct ath_hal *ah = sc->sc_ah; + struct ieee80211_node *ni; +- u_int32_t nexttbtt, intval; ++ u_int32_t nexttbtt = 0; ++ u_int32_t intval; ++ u_int64_t tsf, hw_tsf; ++ u_int32_t tsftu, hw_tsftu; ++ int should_reset_tsf = 0; + + if (vap == NULL) + vap = TAILQ_FIRST(&ic->ic_vaps); /* XXX */ + + ni = vap->iv_bss; + +- /* extract tstamp from last beacon and convert to TU */ +- nexttbtt = TSF_TO_TU(LE_READ_4(ni->ni_tstamp.data + 4), +- LE_READ_4(ni->ni_tstamp.data)); ++ hw_tsf = ath_hal_gettsf64(ah); ++ tsf = le64_to_cpu(ni->ni_tstamp.tsf); ++ hw_tsftu = hw_tsf >> 10; ++ tsftu = tsf >> 10; ++ ++ /* we should reset hw TSF only once, so we increment ++ ni_tstamp.tsf to avoid resetting the hw TSF multiple ++ times */ ++ ++ if (tsf == 0) { ++ should_reset_tsf = 1; ++ ni->ni_tstamp.tsf = cpu_to_le64(1); ++ } ++ + /* XXX conditionalize multi-bss support? */ + if (ic->ic_opmode == IEEE80211_M_HOSTAP) { + /* +@@ -4434,20 +4449,61 @@ + if (sc->sc_stagbeacons) + intval /= ATH_BCBUF; /* for staggered beacons */ + if ((sc->sc_nostabeacons) && +- (vap->iv_opmode == IEEE80211_M_HOSTAP)) +- nexttbtt = 0; ++ (vap->iv_opmode == IEEE80211_M_HOSTAP)) ++ should_reset_tsf = 1; + } else + intval = ni->ni_intval & HAL_BEACON_PERIOD; +- if (nexttbtt == 0) /* e.g. for ap mode */ ++ ++#define FUDGE 2 ++ sc->sc_syncbeacon = 0; ++ if (should_reset_tsf) { ++ ++ /* We just created the interface and TSF will be reset to ++ zero, so next beacon will be sent at the next intval ++ time */ ++ + nexttbtt = intval; +- else if (intval) /* NB: can be 0 for monitor mode */ +- nexttbtt = roundup(nexttbtt, intval); +- DPRINTF(sc, ATH_DEBUG_BEACON, "%s: nexttbtt %u intval %u (%u)\n", +- __func__, nexttbtt, intval, ni->ni_intval); ++ } else if (intval) { /* NB: can be 0 for monitor mode */ ++ if (tsf == 1) { ++ ++ /* We do not receive any beacons or probe response. 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 ms ahead of the ++ current TSF. Otherwise, we use the next beacon ++ timestamp again */ ++ ++ nexttbtt = roundup(hw_tsftu +1, intval); ++ while (nexttbtt <= hw_tsftu + FUDGE) { ++ nexttbtt += intval; ++ } ++ } else { ++ if (tsf > hw_tsf) { ++ ++ /* We do receive a beacon from someone else in the past, ++ but the hw TSF has not been updated (otherwise we ++ would have tsf >= hw_tsf). Since we cannot use the ++ hardware TSF, we will do nothing and wait for the ++ next beacon. In order to do so, we set sc->syncbeacon ++ again */ ++ ++ sc->sc_syncbeacon = 1; ++ goto ath_beacon_config_debug; ++ } else { ++ /* We do receive a beacon in the past, normal case. We ++ make sure that the timestamp is at least FUDGE ms ++ ahead of the hardware TSF */ ++ ++ nexttbtt = tsftu + intval; ++ while (nexttbtt <= hw_tsftu + FUDGE) { ++ nexttbtt += intval; ++ } ++ } ++ } ++ } ++ + if (ic->ic_opmode == IEEE80211_M_STA && !(sc->sc_nostabeacons)) { + HAL_BEACON_STATE bs; +- u_int64_t tsf; +- u_int32_t tsftu; + int dtimperiod, dtimcount; + int cfpperiod, cfpcount; + +@@ -4463,13 +4519,13 @@ + dtimcount = 0; /* XXX? */ + cfpperiod = 1; /* NB: no PCF support yet */ + cfpcount = 0; +-#define FUDGE 2 + /* + * Pull nexttbtt forward to reflect the current + * TSF and calculate dtim+cfp state for the result. + */ +- tsf = ath_hal_gettsf64(ah); +- tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE; ++ nexttbtt = tsftu; ++ if (nexttbtt == 0) /* e.g. for ap mode */ ++ nexttbtt = intval; + do { + nexttbtt += intval; + if (--dtimcount < 0) { +@@ -4477,7 +4533,7 @@ + if (--cfpcount < 0) + cfpcount = cfpperiod - 1; + } +- } while (nexttbtt < tsftu); ++ } while (nexttbtt < hw_tsftu + FUDGE); + #undef FUDGE + memset(&bs, 0, sizeof(bs)); + bs.bs_intval = intval; +@@ -4529,7 +4585,7 @@ + DPRINTF(sc, ATH_DEBUG_BEACON, + "%s: tsf %llu tsf:tu %u intval %u nexttbtt %u dtim %u nextdtim %u bmiss %u sleep %u cfp:period %u maxdur %u next %u timoffset %u\n", + __func__, +- (long long) tsf, tsftu, ++ (long long) hw_tsf, hw_tsftu, + bs.bs_intval, + bs.bs_nexttbtt, + bs.bs_dtimperiod, +@@ -4548,7 +4604,7 @@ + ath_hal_intrset(ah, sc->sc_imask); + } else { + ath_hal_intrset(ah, 0); +- if (nexttbtt == intval) ++ if (should_reset_tsf) + intval |= HAL_BEACON_RESET_TSF; + if (ic->ic_opmode == IEEE80211_M_IBSS) { + /* +@@ -4585,8 +4641,40 @@ + if (ic->ic_opmode == IEEE80211_M_IBSS && sc->sc_hasveol) + ath_beacon_start_adhoc(sc, vap); + } +- sc->sc_syncbeacon = 0; + #undef TSF_TO_TU ++ ++ ath_beacon_config_debug: ++ ++ /* we print all debug messages here, in order to preserve the ++ time critical aspect of this function */ ++ ++ DPRINTF(sc, ATH_DEBUG_BEACON, ++ "%s: ni=%p tsf=%llu hw_tsf=%llu tsftu=%u hw_tsftu=%u\n", ++ __func__, ni, tsf, hw_tsf, tsftu, hw_tsftu); ++ ++ if (should_reset_tsf) { ++ /* we just created the interface */ ++ DPRINTF(sc, ATH_DEBUG_BEACON, "%s: first beacon\n",__func__); ++ } else { ++ if (tsf == 1) { ++ /* we do not receive any beacons or probe response */ ++ DPRINTF(sc, ATH_DEBUG_BEACON, ++ "%s: no beacon received...\n",__func__); ++ } else { ++ if (tsf > hw_tsf) { ++ /* we do receive a beacon and the hw TSF has not been updated */ ++ DPRINTF(sc, ATH_DEBUG_BEACON, ++ "%s: beacon received, but TSF is incorrect\n",__func__); ++ } else { ++ /* we do receive a beacon in the past, normal case */ ++ DPRINTF(sc, ATH_DEBUG_BEACON, ++ "%s: beacon received, TSF is correct\n",__func__); ++ } ++ } ++ } ++ ++ DPRINTF(sc, ATH_DEBUG_BEACON, "%s: nexttbtt=%u intval=%u\n", ++ __func__,nexttbtt, intval & HAL_BEACON_PERIOD); + } + + static int -- cgit v1.2.3