linux-kernel - [PATCH 5.19 1147/1157] wifi: cfg80211: handle IBSS in channel switch

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Date:   Mon, 15 Aug 2022 20:08:23 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        syzbot+90d912872157e63589e4@...kaller.appspotmail.com,
        Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 5.19 1147/1157] wifi: cfg80211: handle IBSS in channel switch

From: Johannes Berg <johannes.berg@...el.com>

commit 77e7b6ba78edf817bddfa97fadb15a971992b1ee upstream.

Prior to commit 7b0a0e3c3a88 ("wifi: cfg80211: do some
rework towards MLO link APIs") the interface type didn't
really matter here, but now we need to handle all of the
possible cases. Add IBSS ("ADHOC") and handle it.

Fixes: 7b0a0e3c3a88 ("wifi: cfg80211: do some rework towards MLO link APIs")
Reported-by: syzbot+90d912872157e63589e4@...kaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/wireless/nl80211.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -18294,6 +18294,9 @@ void cfg80211_ch_switch_notify(struct ne
 	case NL80211_IFTYPE_P2P_GO:
 		wdev->links[link_id].ap.chandef = *chandef;
 		break;
+	case NL80211_IFTYPE_ADHOC:
+		wdev->u.ibss.chandef = *chandef;
+		break;
 	default:
 		WARN_ON(1);
 		break;