Bluetooth: L2CAP: Fix not including all DCIDs

The order of Destination CIDs shall correspond the order of Source CIDs
including its amount so errors that don't result in all connection being
refused shall not break the order of CIDs.

Signed-off-by: Luiz Augusto von Dentz <[email protected]>

Author: Vudentz

subsys/bluetooth/host/l2cap.c

@@ -1136,6 +1136,8 @@ static void le_ecred_conn_req(struct bt_l2cap *l2cap, uint8_t ident,
 		goto response;
 	}
 
+	memset(dcid, 0, sizeof(dcid));
+
 	while (buf->len >= sizeof(scid)) {
 		scid = net_buf_pull_le16(buf);
 
@@ -1147,20 +1149,16 @@ static void le_ecred_conn_req(struct bt_l2cap *l2cap, uint8_t ident,
 			dcid[i++] = sys_cpu_to_le16(ch->rx.cid);
 			continue;
 		/* Some connections refused – invalid Source CID */
-		case BT_L2CAP_LE_ERR_INVALID_SCID:
 		/* Some connections refused – Source CID already allocated */
-		case BT_L2CAP_LE_ERR_SCID_IN_USE:
+		/* Some connections refused – not enough resources
+		 * available.
+		 */
+		default:
 			/* If a Destination CID is 0x0000, the channel was not
 			 * established.
 			 */
 			dcid[i++] = 0x0000;
 			continue;
-		/* Some connections refused – not enough resources
-		 * available.
-		 */
-		case BT_L2CAP_LE_ERR_NO_RESOURCES:
-		default:
-			goto response;
 		}
 	}