iwlwifi: mvm: implement mac80211 TDLS channel-switch APIs

Maintain a TDLS channel-switch state and update it according to
notifications from FW and timeouts. Explicitly check all state
transitions are valid.
When switching is initiated by mac80211, use a delayed work to
periodically reschedule it from iwlwifi.
Give the FW mac80211 generated TDLS channel-switch request/response
templates. It will change appropriate values (switch timings) and Tx
them at appropriate times.

Enable the channel switch wiphy capability bit when the FW supports it.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 5aedf9dbf23c..3841fcfbee2c 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -495,6 +495,12 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
         }
 
+        if (mvm->fw->ucode_capa.capa[0] &
+            IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
+                IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
+                hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
+        }
+
         ret = ieee80211_register_hw(mvm->hw);
         if (ret)
                 iwl_mvm_leds_exit(mvm);
@@ -3211,6 +3217,10 @@ const struct ieee80211_ops iwl_mvm_hw_ops = {
 
         .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
 
+        .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
+        .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
+        .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
+
         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
 
 #ifdef CONFIG_PM_SLEEP