[PATCH] wifi: mac80211: do not check BSS color collision in certain cases

[Michael-CY Lee]

Do not check BSS color collision in following cases
1. already under a color change
2. color change is disabled

Signed-off-by: Michael-CY Lee <michael-cy.lee at mediatek.com>
---
 net/mac80211/rx.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 0ff9062a130c..59ad24a71141 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3358,6 +3358,7 @@ static void
 ieee80211_rx_check_bss_color_collision(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_mgmt *mgmt = (void *)rx->skb->data;
+	struct ieee80211_bss_conf *bss_conf;
 	const struct element *ie;
 	size_t baselen;
 
@@ -3368,7 +3369,9 @@ ieee80211_rx_check_bss_color_collision(struct ieee80211_rx_data *rx)
 	if (ieee80211_hw_check(&rx->local->hw, DETECTS_COLOR_COLLISION))
 		return;
 
-	if (rx->link->conf->csa_active)
+	bss_conf = rx->link->conf;
+	if (bss_conf->csa_active || bss_conf->color_change_active ||
+	    !bss_conf->he_bss_color.enabled)
 		return;
 
 	baselen = mgmt->u.beacon.variable - rx->skb->data;
@@ -3380,7 +3383,6 @@ ieee80211_rx_check_bss_color_collision(struct ieee80211_rx_data *rx)
 				    rx->skb->len - baselen);
 	if (ie && ie->datalen >= sizeof(struct ieee80211_he_operation) &&
 	    ie->datalen >= ieee80211_he_oper_size(ie->data + 1)) {
-		struct ieee80211_bss_conf *bss_conf = rx->link->conf;
 		const struct ieee80211_he_operation *he_oper;
 		u8 color;
 
-- 
2.25.1