From b8730b403aee94db4631bfefb546a6ce8c287dc2 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 27 Mar 2013 20:49:58 +0100 Subject: iwlwifi: dvm: fix the passive-no-RX workaround Alex Romosan reported that since the mac80211 changes in "mac80211: start auth/assoc timeout on frame status" and the subsequent fixes in "mac80211: fix auth/assoc timeout handling" (commits 1672c0e31917 and 89afe614c0c) there's sometimes an issue connecting to a 5 GHz network with the iwlwifi DVM driver. The reason appears to be that since these commits any bad TX status makes mac80211 immediately try again, causing all of the authentication attempts to be quickly rejected by the firmware as it hasn't heard a beacon yet. Before, it would wait for the timeout regardless of status. To fix this, invoke the passive-no-RX workaround when not associated yet as well. This will cause the first frame to get lost, but then the driver will stop the queues and the second attempt will only be transmitted after hearing a beacon, thus delaying it appropriately to not make the firmware reject it again. Reported-by: Alex Romosan Tested-by: Alex Romosan Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/dvm/rxon.c | 18 ++++++++---------- drivers/net/wireless/iwlwifi/dvm/tx.c | 2 +- 2 files changed, 9 insertions(+), 11 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/wireless/iwlwifi/dvm/rxon.c b/drivers/net/wireless/iwlwifi/dvm/rxon.c index 23be948cf16..a82b6b39d4f 100644 --- a/drivers/net/wireless/iwlwifi/dvm/rxon.c +++ b/drivers/net/wireless/iwlwifi/dvm/rxon.c @@ -1419,6 +1419,14 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw, mutex_lock(&priv->mutex); + if (changes & BSS_CHANGED_IDLE && bss_conf->idle) { + /* + * If we go idle, then clearly no "passive-no-rx" + * workaround is needed any more, this is a reset. + */ + iwlagn_lift_passive_no_rx(priv); + } + if (unlikely(!iwl_is_ready(priv))) { IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); mutex_unlock(&priv->mutex); @@ -1450,16 +1458,6 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw, priv->timestamp = bss_conf->sync_tsf; ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; } else { - /* - * If we disassociate while there are pending - * frames, just wake up the queues and let the - * frames "escape" ... This shouldn't really - * be happening to start with, but we should - * not get stuck in this case either since it - * can happen if userspace gets confused. - */ - iwlagn_lift_passive_no_rx(priv); - ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; if (ctx->ctxid == IWL_RXON_CTX_BSS) diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c index 6aec2df3bb2..d1a670d7b10 100644 --- a/drivers/net/wireless/iwlwifi/dvm/tx.c +++ b/drivers/net/wireless/iwlwifi/dvm/tx.c @@ -1192,7 +1192,7 @@ int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, memset(&info->status, 0, sizeof(info->status)); if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && - iwl_is_associated_ctx(ctx) && ctx->vif && + ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) { /* block and stop all queues */ priv->passive_no_rx = true; -- cgit v1.2.3-70-g09d2 From 901ceba4e81e9dd6b4a3c4c37ee22000a6c5c65f Mon Sep 17 00:00:00 2001 From: Stone Piao Date: Fri, 29 Mar 2013 19:21:21 -0700 Subject: mwifiex: limit channel number not to overflow memory Limit the channel number in scan request, or the driver scan config structure memory will be overflowed. Cc: # 3.5+ Signed-off-by: Stone Piao Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/cfg80211.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/net') diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c index a44023a7bd5..8aaf56ade4d 100644 --- a/drivers/net/wireless/mwifiex/cfg80211.c +++ b/drivers/net/wireless/mwifiex/cfg80211.c @@ -1892,7 +1892,8 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy, } } - for (i = 0; i < request->n_channels; i++) { + for (i = 0; i < min_t(u32, request->n_channels, + MWIFIEX_USER_SCAN_CHAN_MAX); i++) { chan = request->channels[i]; priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value; priv->user_scan_cfg->chan_list[i].radio_type = chan->band; -- cgit v1.2.3-70-g09d2