From: Ilan Peer <ilan.peer@intel.com>
Date: Tue, 27 Aug 2024 08:39:20 +0000 (+0200)
Subject: wifi: mac80211: Check for missing VHT elements only for 5 GHz
X-Git-Tag: v6.12-rc1~232^2~101^2~16
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=67bb124cd9ae38870667e4f9c876ef8e0f82ec44;p=thirdparty%2Fkernel%2Flinux.git

wifi: mac80211: Check for missing VHT elements only for 5 GHz

Check for missing VHT Capabilities and VHT Operation elements in
association response frame only for 5 GHz links.

Fixes: 310c8387c638 ("wifi: mac80211: clean up connection process")
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240827103920.dd711282d543.Iaba245cebc52209b0499d5bab7d8a8ef1df9dd65@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index acd4fe7039904..6e99db7addf18 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4715,7 +4715,7 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link,
 	    ((assoc_data->wmm && !elems->wmm_param) ||
 	     (link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_HT &&
 	      (!elems->ht_cap_elem || !elems->ht_operation)) ||
-	     (link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT &&
+	     (is_5ghz && link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT &&
 	      (!elems->vht_cap_elem || !elems->vht_operation)))) {
 		const struct cfg80211_bss_ies *ies;
 		struct ieee802_11_elems *bss_elems;
@@ -4763,19 +4763,22 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link,
 			sdata_info(sdata,
 				   "AP bug: HT operation missing from AssocResp\n");
 		}
-		if (!elems->vht_cap_elem && bss_elems->vht_cap_elem &&
-		    link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT) {
-			elems->vht_cap_elem = bss_elems->vht_cap_elem;
-			sdata_info(sdata,
-				   "AP bug: VHT capa missing from AssocResp\n");
-		}
-		if (!elems->vht_operation && bss_elems->vht_operation &&
-		    link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT) {
-			elems->vht_operation = bss_elems->vht_operation;
-			sdata_info(sdata,
-				   "AP bug: VHT operation missing from AssocResp\n");
-		}
 
+		if (is_5ghz) {
+			if (!elems->vht_cap_elem && bss_elems->vht_cap_elem &&
+			    link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT) {
+				elems->vht_cap_elem = bss_elems->vht_cap_elem;
+				sdata_info(sdata,
+					   "AP bug: VHT capa missing from AssocResp\n");
+			}
+
+			if (!elems->vht_operation && bss_elems->vht_operation &&
+			    link->u.mgd.conn.mode >= IEEE80211_CONN_MODE_VHT) {
+				elems->vht_operation = bss_elems->vht_operation;
+				sdata_info(sdata,
+					   "AP bug: VHT operation missing from AssocResp\n");
+			}
+		}
 		kfree(bss_elems);
 	}