wifi: iwlwifi: mvm: fix iwl_mvm_sta_rc_update for MLO

When this is called it might crash due to the use of
deflink's phy context, update all links instead. It
really shouldn't be called right now though, but it's
better to have safer code until we update this to be
with a link parameter.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230417113648.fd47d0de8319.I87c5e5bcb2fadd70acc32021eed394fc1eea12a4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index b086229..9d5d2c6 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -3585,9 +3585,9 @@ static void iwl_mvm_rs_rate_init_all_links(struct iwl_mvm *mvm,
 
        for_each_mvm_vif_valid_link(mvmvif, link_id) {
                struct ieee80211_bss_conf *conf =
-                       link_conf_dereference_protected(vif, link_id);
+                       link_conf_dereference_check(vif, link_id);
                struct ieee80211_link_sta *link_sta =
-                       link_sta_dereference_protected(sta, link_id);
+                       link_sta_dereference_check(sta, link_id);
 
                if (!conf || !link_sta || !mvmvif->link[link_id]->phy_ctxt)
                        continue;
@@ -3983,15 +3983,11 @@ void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                           struct ieee80211_sta *sta, u32 changed)
 {
        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-       struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 
        if (changed & (IEEE80211_RC_BW_CHANGED |
                       IEEE80211_RC_SUPP_RATES_CHANGED |
                       IEEE80211_RC_NSS_CHANGED))
-               iwl_mvm_rs_rate_init(mvm, sta,
-                                    &vif->bss_conf, &sta->deflink,
-                                    mvmvif->deflink.phy_ctxt->channel->band,
-                                    true);
+               iwl_mvm_rs_rate_init_all_links(mvm, vif, sta, true);
 
        if (vif->type == NL80211_IFTYPE_STATION &&
            changed & IEEE80211_RC_NSS_CHANGED)