Patch "wifi: iwlwifi: mvm: initialize rates in FW earlier" has been added to the 6.8-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    wifi: iwlwifi: mvm: initialize rates in FW earlier

to the 6.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     wifi-iwlwifi-mvm-initialize-rates-in-fw-earlier.patch
and it can be found in the queue-6.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 4f3070727f2df313aed8566f23ca21f11bb2f75e
Author: Johannes Berg <johannes.berg@xxxxxxxxx>
Date:   Sun Jan 28 08:53:58 2024 +0200

    wifi: iwlwifi: mvm: initialize rates in FW earlier
    
    [ Upstream commit d3b2c6c65bfd3b9616084e91bd0d402964ea7cef ]
    
    When connecting to an AP, we currently initialize the rate
    control only after associating. Since we now use firmware
    to assign rates to auth/assoc frames rather than using the
    data in the station and the firmware doesn't know, they're
    transmitted using low mandatory rates. However, if the AP
    advertised only higher supported rates we want to use them
    to be nicer (it still must receive mandatory rates though),
    so send the information to the firmware earlier to have it
    know about it and be able to use it.
    
    Fixes: 499d02790495 ("wifi: iwlwifi: Use FW rate for non-data frames")
    Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
    Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
    Link: https://msgid.link/20240128084842.ed7ab1c859c2.I4b4d4fc3905c8d8470fc0fee4648f25c950c9bb7@changeid
    Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 53e26c3c3a9af..346512696bd1c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -3698,6 +3698,19 @@ iwl_mvm_sta_state_notexist_to_none(struct iwl_mvm *mvm,
 	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
 		mvmvif->ap_sta = sta;
 
+	/*
+	 * Initialize the rates here already - this really tells
+	 * the firmware only what the supported legacy rates are
+	 * (may be) since it's initialized already from what the
+	 * AP advertised in the beacon/probe response. This will
+	 * allow the firmware to send auth/assoc frames with one
+	 * of the supported rates already, rather than having to
+	 * use a mandatory rate.
+	 * If we're the AP, we'll just assume mandatory rates at
+	 * this point, but we know nothing about the STA anyway.
+	 */
+	iwl_mvm_rs_rate_init_all_links(mvm, vif, sta);
+
 	return 0;
 }