qcacmn: Send all partner BSSes before sending connect result to kernel

Currently, legacy driver sends only one connected BSS entry to
kernel while sending the connect response. But in case of MLO
connection, kernel will not have the BSS entry for the partner
link which may leads to connect response failure.

Fix is, in case of MLO, driver should send all partner BSS
entries to kernel before sending connect result.

Change-Id: Icf2c75f8029c44270c4b51e2ab3fcf861d221747
CRs-Fixed: 3240332

umac/mlme/connection_mgr/core/src/wlan_cm_connect.c

@@ -2090,6 +2090,64 @@ cm_resume_connect_after_peer_create(struct cnx_mgr *cm_ctx, wlan_cm_id *cm_id)
 	return status;
 }
 
+#if defined(WLAN_FEATURE_11BE_MLO) && defined(WLAN_FEATURE_11BE_MLO_ADV_FEATURE)
+static void cm_inform_bcn_probe_handler(struct cnx_mgr *cm_ctx,
+					struct scan_cache_entry *bss,
+					wlan_cm_id cm_id)
+{
+	struct element_info *bcn_probe_rsp;
+	int32_t rssi;
+	qdf_freq_t freq;
+
+	bcn_probe_rsp = &bss->raw_frame;
+	rssi = bss->rssi_raw;
+	freq = util_scan_entry_channel_frequency(bss);
+
+	cm_inform_bcn_probe(cm_ctx, bcn_probe_rsp->ptr, bcn_probe_rsp->len,
+			    freq, rssi, cm_id);
+}
+
+static void cm_update_partner_link_scan_db(struct cnx_mgr *cm_ctx,
+					   wlan_cm_id cm_id,
+					   qdf_list_t *candidate_list,
+					   struct scan_cache_entry *cur_bss)
+{
+	qdf_list_node_t *cur_node = NULL, *next_node = NULL;
+	struct scan_cache_node *candidate;
+	struct scan_cache_entry *bss;
+
+	qdf_list_peek_front(candidate_list, &cur_node);
+
+	while (cur_node) {
+		qdf_list_peek_next(candidate_list, cur_node, &next_node);
+		candidate = qdf_container_of(cur_node, struct scan_cache_node,
+					     node);
+		bss = candidate->entry;
+		/*
+		 * If BSS is ML and not current bss and BSS mld mac is same as
+		 * cur bss then inform it to scan cache to avoid scan cache
+		 * ageing out.
+		 */
+		if (!qdf_is_macaddr_equal(&bss->bssid, &cur_bss->bssid) &&
+		    bss->ml_info.num_links &&
+		    cur_bss->ml_info.num_links &&
+		    qdf_is_macaddr_equal(&bss->ml_info.mld_mac_addr,
+					 &cur_bss->ml_info.mld_mac_addr))
+			cm_inform_bcn_probe_handler(cm_ctx, bss, cm_id);
+		cur_node = next_node;
+		next_node = NULL;
+	}
+}
+#else
+static
+inline void cm_update_partner_link_scan_db(struct cnx_mgr *cm_ctx,
+					   wlan_cm_id cm_id,
+					   qdf_list_t *candidate_list,
+					   struct scan_cache_entry *cur_bss)
+{
+}
+#endif
+
 /**
  * cm_update_scan_db_on_connect_success() - update scan db with beacon or
  * probe resp
@@ -2141,6 +2199,15 @@ cm_update_scan_db_on_connect_success(struct cnx_mgr *cm_ctx,
 
 	cm_inform_bcn_probe(cm_ctx, bcn_probe_rsp->ptr, bcn_probe_rsp->len,
 			    resp->freq, rssi, resp->cm_id);
+
+	/*
+	 * If vdev is an MLO vdev and not reassoc then use partner link info to
+	 * inform partner link scan entry to kernel.
+	 */
+	if (!resp->is_reassoc && wlan_vdev_mlme_is_mlo_vdev(cm_ctx->vdev))
+		cm_update_partner_link_scan_db(cm_ctx, resp->cm_id,
+				cm_req->connect_req.candidate_list,
+				cur_candidate->entry);
 }
 
 #ifdef WLAN_FEATURE_11BE_MLO