From: Johannes Berg Date: Fri, 19 Aug 2022 12:58:42 +0000 (+0200) Subject: wifi: mac80211_hwsim: fix link change handling X-Git-Tag: v6.0.3~610 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4e1f202c502199dfdf06fba4f7cce1cac900a6c2;p=thirdparty%2Fkernel%2Fstable.git wifi: mac80211_hwsim: fix link change handling [ Upstream commit 65f7052b6c38f767d95ebfa4ae4b389b6da6a421 ] The code for determining which links to update in wmediumd or virtio was wrong, fix it to remove the deflink only if there were no old links, and also add the deflink if there are no other new links. Fixes: c204d9df0202 ("wifi: mac80211_hwsim: handle links for wmediumd/virtio") Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index ee34814bd12b5..a074552bcec3d 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -2995,10 +2995,15 @@ static int mac80211_hwsim_change_vif_links(struct ieee80211_hw *hw, u16 old_links, u16 new_links, struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS]) { - unsigned long rem = old_links & ~new_links ?: BIT(0); + unsigned long rem = old_links & ~new_links; unsigned long add = new_links & ~old_links; int i; + if (!old_links) + rem |= BIT(0); + if (!new_links) + add |= BIT(0); + for_each_set_bit(i, &rem, IEEE80211_MLD_MAX_NUM_LINKS) mac80211_hwsim_config_mac_nl(hw, old[i]->addr, false);