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[45/75] iwlwifi: mvm: disconnect TDLS peers on reconfig

Message ID 1416839691-28533-45-git-send-email-egrumbach@gmail.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Emmanuel Grumbach Nov. 24, 2014, 2:34 p.m. UTC 
From: Arik Nemtsov <arik@wizery.com>

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>
---
 drivers/net/wireless/iwlwifi/mvm/mac80211.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox

Patch

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 801abcf..3883a86 100644
--- 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);
 }