Re: [PATCH V4 1/6] bss coloring: add support for handling collision events and triggering CCA

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+
+static void
+hostapd_switch_color_timeout_handler(void *eloop_data, void *user_ctx)
+{
+	struct hostapd_data *hapd = (struct hostapd_data *) eloop_data;
+	struct cca_settings settings;
+	struct os_time now;
+	int i, r, b, ret;
+
+	if (os_get_time(&now))
+		return;
+
+	/* check if there has been a recent collision */
+	if (now.sec - hapd->last_color_collision.sec >= 10)
+		return;
+
+	r = os_random() % HE_OPERATION_BSS_COLOR_MAX;
+	for (i = 0; i < HE_OPERATION_BSS_COLOR_MAX; i++) {
+		if (r && (hapd->color_collision_bitmap & (1 << r)) == 0)
+			break;
+		r = (r + 1) % HE_OPERATION_BSS_COLOR_MAX;
+	}
+	if (i == HE_OPERATION_BSS_COLOR_MAX) {
+		/* there are no free colors so turn bss coloring off */
+ wpa_printf(MSG_INFO, "no free colors left, turning of BSS coloring");
+		hapd->iface->conf->he_op.he_bss_color_disabled = 1;
+		hapd->iface->conf->he_op.he_bss_color = 1;

Why don't we retain the previous color instead of going to the color "1" while disabled the bss color ?

Thanks,
Karthikeyan P.

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