linux-kernel - [PATCH 6.7 195/713] wifi: iwlwifi: mvm: fix the TLC command after ADD

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Message-ID: <20240324224720.1345309-196-sashal@kernel.org>
Date: Sun, 24 Mar 2024 18:38:41 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	Johannes Berg <johannes.berg@...el.com>,
	Miri Korenblit <miriam.rachel.korenblit@...el.com>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.7 195/713] wifi: iwlwifi: mvm: fix the TLC command after ADD_STA

From: Emmanuel Grumbach <emmanuel.grumbach@...el.com>

[ Upstream commit 0fcdf55fced7121c43fa576433986f1c04115b73 ]

ADD_STA resets the link quality data inside the firmware. This is not
supposed to happen and has been fixed for newer devices. For older
devices (AX201 and down), this makes us send frames with rates that are
not in the TLC table.

Fixes: 5a86dcb4a908 ("wifi: iwlwifi: mvm: update station's MFP flag after association")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@...el.com>
Reviewed-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@...el.com>
Link: https://msgid.link/20240129211905.1deca7eaff14.I597abd7aab36fdab4aa8311a48c98a3d5bd433ba@changeid
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index b87173bb61f24..68c3d54f587cc 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -3795,13 +3795,17 @@ iwl_mvm_sta_state_assoc_to_authorized(struct iwl_mvm *mvm,
 
 	mvm_sta->authorized = true;
 
-	iwl_mvm_rs_rate_init_all_links(mvm, vif, sta);
-
 	/* MFP is set by default before the station is authorized.
 	 * Clear it here in case it's not used.
 	 */
-	if (!sta->mfp)
-		return callbacks->update_sta(mvm, vif, sta);
+	if (!sta->mfp) {
+		int ret = callbacks->update_sta(mvm, vif, sta);
+
+		if (ret)
+			return ret;
+	}
+
+	iwl_mvm_rs_rate_init_all_links(mvm, vif, sta);
 
 	return 0;
 }
-- 
2.43.0