iwlwifi: mvm: disconnect if channel switch delay is too long

If the channel switch delay that we would incur after the channel
switch actually happens is longer than the quiet time we're willing
to tolerate, disconnect as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201209231352.3bc3449922da.Ib0255deb67b2fc21317e274adcacb545bb1dc669@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 7229617..b4b65e9 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -4548,6 +4548,9 @@ static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
 
                break;
        case NL80211_IFTYPE_STATION:
+               if (chsw->delay > IWL_MAX_CSA_BLOCK_TX)
+                       schedule_delayed_work(&mvmvif->csa_work, 0);
+
                if (chsw->block_tx) {
                        /*
                         * In case of undetermined / long time with immediate