diff mbox series

[03/17] wifi: iwlwifi: mvm: assign link STA ID lookups during restart

Message ID 20240320232419.4a3273e5c6be.I7cb6cf096ab135f4b489f2806b116563624aa5ee@changeid (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series wifi: iwlwifi: updates - 2024-03-20 | expand

Commit Message

Korenblit, Miriam Rachel March 20, 2024, 9:26 p.m. UTC 
From: Benjamin Berg <benjamin.berg@intel.com>

When restarting the HW, mac80211 first adds the STA back with only one
link enabled. This means that iwl_mvm_alloc_sta_after_restart will not
see the other links and will not do the assignment.

As such, do the assignment when mac80211 is activating the link for the
station.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
index 4ba1599ed71c..94a01c0f261a 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c
@@ -1122,10 +1122,21 @@  int iwl_mvm_mld_update_sta_links(struct iwl_mvm *mvm,
 		}
 
 		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
-			if (WARN_ON(!mvm_sta->link[link_id])) {
+			struct iwl_mvm_link_sta *mvm_link_sta =
+				rcu_dereference_protected(mvm_sta->link[link_id],
+							  lockdep_is_held(&mvm->mutex));
+			u32 sta_id;
+
+			if (WARN_ON(!mvm_link_sta)) {
 				ret = -EINVAL;
 				goto err;
 			}
+
+			sta_id = mvm_link_sta->sta_id;
+
+			rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
+			rcu_assign_pointer(mvm->fw_id_to_link_sta[sta_id],
+					   link_sta);
 		} else {
 			if (WARN_ON(mvm_sta->link[link_id])) {
 				ret = -EINVAL;