From 5d39051a328c0508b0fb0247227197059edd2da9 Mon Sep 17 00:00:00 2001 From: Liad Kaufman Date: Tue, 17 Oct 2017 16:26:00 +0300 Subject: [PATCH] iwlwifi: mvm: reset seq num after restart After a FW reset on A000 NICs, the driver doesn't set the seq number when re-allocating the queues. This in turn leads to a mismatch between the seq number the driver thinks each frame has, and the actual seq num given by the HW. This especially causes issues with aggregations, since the driver could be waiting to start an aggregation and queue traffic from the mac80211 until then, when actually it shouldn't be waiting. Fixes: 310181ec34e2 ("iwlwifi: move to TVQM mode") Signed-off-by: Liad Kaufman Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index c8febde..039efcd 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -1257,6 +1257,14 @@ static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, mvm_sta->sta_id, i, wdg_timeout); tid_data->txq_id = txq_id; + + /* + * Since we don't set the seq number after reset, and HW + * sets it now, FW reset will cause the seq num to start + * at 0 again, so driver will need to update it + * internally as well, so it keeps in sync with real val + */ + tid_data->seq_number = 0; } else { u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); -- 2.7.4