iwlwifi: mvm: disconnect TDLS peers on reconfig

When TDLS peers are present the FW will send packets on a dedicated
TID vs. the peer when performing TDLS channel-switches. The driver
configures the TID on connection to the peer and the FW is responsible
for maintaining the state of QoS seqno and PN/IV for encryption.

If the FW asserts, the driver cannot correctly reconfigure the starting
seqno/PN to the reloaded FW, thus forcing us to reconnect the peer.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 801abcf..3883a86 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -948,6 +948,12 @@ static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
        /* allow transport/FW low power modes */
        iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 
+       /*
+        * If we have TDLS peers, remove them. We don't know the last seqno/PN
+        * of packets the FW sent out, so we must reconnect.
+        */
+       iwl_mvm_teardown_tdls_peers(mvm);
+
        mutex_unlock(&mvm->mutex);
 }