From bbb05cb55a1b57003b17d47b5a7ac809bab60f80 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 18 Jul 2011 01:59:22 -0700 Subject: [PATCH] iwlagn: track beacon interval sent to device Sometimes, when mac80211 changes the beacon interval or when it isn't yet set in mac80211 before association, the uCode will sysassert because we send it confusing RXON timing vs. PAN parameters. To fix this, track the last beacon interval sent to the device and use that in PAN parameter calculations. This fixes a bug during P2P group formation as a client (and possibly association to a regular AP) while connected to another AP. Signed-off-by: Johannes Berg Signed-off-by: Wey-Yi Guy --- drivers/net/wireless/iwlwifi/iwl-agn-rxon.c | 11 +++++------ drivers/net/wireless/iwlwifi/iwl-core.c | 2 ++ drivers/net/wireless/iwlwifi/iwl-dev.h | 2 ++ 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c index d78a4659dbff..d42ef1763a71 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c @@ -342,7 +342,7 @@ int iwlagn_set_pan_params(struct iwl_priv *priv) slot1 = priv->hw_roc_duration; slot0 = IWL_MIN_SLOT_TIME; } else if (ctx_bss->vif && ctx_pan->vif) { - int bcnint = ctx_pan->vif->bss_conf.beacon_int; + int bcnint = ctx_pan->beacon_int; int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1; /* should be set, but seems unused?? */ @@ -350,14 +350,13 @@ int iwlagn_set_pan_params(struct iwl_priv *priv) if (ctx_pan->vif->type == NL80211_IFTYPE_AP && bcnint && - bcnint != ctx_bss->vif->bss_conf.beacon_int) { + bcnint != ctx_bss->beacon_int) { IWL_ERR(priv, "beacon intervals don't match (%d, %d)\n", - ctx_bss->vif->bss_conf.beacon_int, - ctx_pan->vif->bss_conf.beacon_int); + ctx_bss->beacon_int, ctx_pan->beacon_int); } else bcnint = max_t(int, bcnint, - ctx_bss->vif->bss_conf.beacon_int); + ctx_bss->beacon_int); if (!bcnint) bcnint = DEFAULT_BEACON_INTERVAL; slot0 = bcnint / 2; @@ -376,7 +375,7 @@ int iwlagn_set_pan_params(struct iwl_priv *priv) } else if (ctx_pan->vif) { slot0 = 0; slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) * - ctx_pan->vif->bss_conf.beacon_int; + ctx_pan->beacon_int; slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1); if (test_bit(STATUS_SCAN_HW, &priv->status)) { diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 2f42547622d6..cf376f62b2f6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -363,6 +363,8 @@ int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) ctx->timing.beacon_interval = cpu_to_le16(beacon_int); } + ctx->beacon_int = beacon_int; + tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ interval_tm = beacon_int * TIME_UNIT; rem = do_div(tsf, interval_tm); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index fc2387342456..8da38bef356f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1152,6 +1152,8 @@ struct iwl_rxon_context { __le32 station_flags; + int beacon_int; + struct { bool non_gf_sta_present; u8 protection; -- 2.11.4.GIT