diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2023-09-13 14:56:46 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2023-09-13 16:11:40 +0200 |
| commit | 828c79d9feb000acbd9c15bd1ed7e0914473b363 (patch) | |
| tree | 0b951dda0b73f9b357911d1b0ca7b8a4e00c7a2f /drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | |
| parent | 499d02790495958506a64f37ceda7e97345a50a8 (diff) | |
wifi: iwlwifi: mvm: fix recovery flow in CSA
If the firmware crashes in the de-activation / re-activation
of the link during CSA, we will not have a valid phy_ctxt
pointer in mvmvif. This is a legit case, but when mac80211
removes the station to cleanup our state during the
re-configuration, we need to make sure we clear ap_sta
otherwise we won't re-add the station after the firmware has
been restarted. Later on, we'd activate the link, try to send
a TLC command crash again on ASSERT 3508.
Fix this by properly cleaning up our state.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230913145231.2651e6f6a55a.I4cd50e88ee5c23c1c8dd5b157a800e4b4c96f236@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 2fb5fb41f508..98172da346fb 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -1033,6 +1033,7 @@ static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, spin_unlock_bh(&mvm->time_event_lock); memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); + mvmvif->ap_sta = NULL; for_each_mvm_vif_valid_link(mvmvif, link_id) { mvmvif->link[link_id]->ap_sta_id = IWL_MVM_INVALID_STA; @@ -3871,7 +3872,11 @@ int iwl_mvm_mac_sta_state_common(struct ieee80211_hw *hw, mutex_lock(&mvm->mutex); - /* this would be a mac80211 bug ... but don't crash */ + /* this would be a mac80211 bug ... but don't crash, unless we had a + * firmware crash while we were activating a link, in which case it is + * legit to have phy_ctxt = NULL. Don't bother not to WARN if we are in + * recovery flow since we spit tons of error messages anyway. + */ for_each_sta_active_link(vif, sta, link_sta, link_id) { if (WARN_ON_ONCE(!mvmvif->link[link_id] || !mvmvif->link[link_id]->phy_ctxt)) { |