qcacmn: Avoid looping twice to find peers for beacon frames

Driver first try to find peer for beacon frames with addr2,
and if no peer is found it loop through peer list 2nd time
for addr1. For beacon addr1 is broadcast address and thus
peer will never be found with broadcast address.

Thus use addr1 to find peer only if addr1 is not broadcast
address.

Change-Id: I7e5c221ec7f93f878981f4eafb69935aafd64174
CRs-Fixed: 2373793

umac/cmn_services/mgmt_txrx/dispatcher/src/wlan_mgmt_txrx_tgt_api.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -866,24 +866,6 @@ QDF_STATUS tgt_mgmt_txrx_rx_frame_handler(
 	wh = (struct ieee80211_frame *)data;
 	buflen = qdf_nbuf_len(buf);
 
-	/* peer can be NULL in following 2 scenarios:
-	 * 1. broadcast frame received
-	 * 2. operating in monitor mode
-	 *
-	 * and in both scenarios, the receiver of frame
-	 * is expected to do processing accordingly considerng
-	 * the fact that peer = NULL can be received and is a valid
-	 * scenario.
-	 */
-	mac_addr = (uint8_t *)wh->i_addr2;
-	peer = wlan_objmgr_get_peer(psoc, mgmt_rx_params->pdev_id,
-				    mac_addr, WLAN_MGMT_SB_ID);
-	if (!peer) {
-		mac_addr = (uint8_t *)wh->i_addr1;
-		peer = wlan_objmgr_get_peer(psoc, mgmt_rx_params->pdev_id,
-					    mac_addr, WLAN_MGMT_SB_ID);
-	}
-
 	/**
 	 * TO DO (calculate pdev)
 	 * Waiting for a new parameter: pdev id to get added in rx event
@@ -896,8 +878,7 @@ QDF_STATUS tgt_mgmt_txrx_rx_frame_handler(
 		mgmt_txrx_err("Rx event doesn't conatin a mgmt. packet, %d",
 			mgmt_type);
 		qdf_nbuf_free(buf);
-		status = QDF_STATUS_E_FAILURE;
-		goto dec_peer_ref_cnt;
+		return QDF_STATUS_E_FAILURE;
 	}
 
 	/* mpdu_data_ptr is pointer to action header */
@@ -919,16 +900,14 @@ QDF_STATUS tgt_mgmt_txrx_rx_frame_handler(
 			if (buflen <= (sizeof(struct ieee80211_frame)
 					+ IEEE80211_CCMP_HEADERLEN)) {
 				qdf_nbuf_free(buf);
-				status = QDF_STATUS_E_FAILURE;
-				goto dec_peer_ref_cnt;
+				return QDF_STATUS_E_FAILURE;
 			}
 			mpdu_data_ptr += IEEE80211_CCMP_HEADERLEN;
 		} else {
 			if (buflen <= (sizeof(struct ieee80211_frame)
 					+ WLAN_HDR_EXT_IV_LEN)) {
 				qdf_nbuf_free(buf);
-				status = QDF_STATUS_E_FAILURE;
-				goto dec_peer_ref_cnt;
+				return QDF_STATUS_E_FAILURE;
 			}
 			mpdu_data_ptr += WLAN_HDR_EXT_IV_LEN;
 		}
@@ -939,13 +918,14 @@ QDF_STATUS tgt_mgmt_txrx_rx_frame_handler(
 		mgmt_txrx_err_rl("Unspecified mgmt frame type fc: %x %x",
 				 wh->i_fc[0], wh->i_fc[1]);
 		qdf_nbuf_free(buf);
-		status = QDF_STATUS_E_FAILURE;
-		goto dec_peer_ref_cnt;
+		return QDF_STATUS_E_FAILURE;
 	}
 
-	mgmt_txrx_debug("Rcvd mgmt frame, mgmt txrx frm type: %u seq. no.: %u, peer: %pK fc: %x %x",
-			frm_type, *(uint16_t *)wh->i_seq, peer, wh->i_fc[0],
-			wh->i_fc[1]);
+	mgmt_txrx_debug("Rcvd mgmt frame subtype %x (frame type %u) from %pM, seq_num = %d, rssi = %d tsf_delta: %u",
+			mgmt_subtype, frm_type, wh->i_addr2,
+			(le16toh(*(uint16_t *)wh->i_seq) >>
+			WLAN_SEQ_SEQ_SHIFT), mgmt_rx_params->rssi,
+			mgmt_rx_params->tsf_delta);
 
 	mgmt_txrx_psoc_ctx = (struct mgmt_txrx_priv_psoc_context *)
 			wlan_objmgr_psoc_get_comp_private_obj(psoc,
@@ -979,11 +959,31 @@ QDF_STATUS tgt_mgmt_txrx_rx_frame_handler(
 		mgmt_txrx_debug("No rx callback registered for frm_type: %d",
 				frm_type);
 		qdf_nbuf_free(buf);
-		status = QDF_STATUS_E_FAILURE;
-		goto dec_peer_ref_cnt;
+		return QDF_STATUS_E_FAILURE;
 	}
 	qdf_spin_unlock_bh(&mgmt_txrx_psoc_ctx->mgmt_txrx_psoc_ctx_lock);
 
+	mac_addr = (uint8_t *)wh->i_addr2;
+	/*
+	 * peer can be NULL in following 2 scenarios:
+	 * 1. broadcast frame received
+	 * 2. operating in monitor mode
+	 *
+	 * and in both scenarios, the receiver of frame
+	 * is expected to do processing accordingly considerng
+	 * the fact that peer = NULL can be received and is a valid
+	 * scenario.
+	 */
+	peer = wlan_objmgr_get_peer(psoc, mgmt_rx_params->pdev_id,
+				    mac_addr, WLAN_MGMT_SB_ID);
+	if (!peer && !qdf_is_macaddr_broadcast(
+	    (struct qdf_mac_addr *)wh->i_addr1)) {
+		mac_addr = (uint8_t *)wh->i_addr1;
+		peer = wlan_objmgr_get_peer(psoc,
+					    mgmt_rx_params->pdev_id,
+					    mac_addr, WLAN_MGMT_SB_ID);
+	}
+
 	rx_handler = rx_handler_head;
 	while (rx_handler->next) {
 		copy_buf = qdf_nbuf_clone(buf);
@@ -998,15 +998,15 @@ QDF_STATUS tgt_mgmt_txrx_rx_frame_handler(
 	rx_handler->rx_cb(psoc, peer, buf,
 				mgmt_rx_params, frm_type);
 
+	if (peer)
+		wlan_objmgr_peer_release_ref(peer, WLAN_MGMT_SB_ID);
+
 rx_handler_mem_free:
 	while (rx_handler_head) {
 		rx_handler = rx_handler_head;
 		rx_handler_head = rx_handler_head->next;
 		qdf_mem_free(rx_handler);
 	}
-dec_peer_ref_cnt:
-	if (peer)
-		wlan_objmgr_peer_release_ref(peer, WLAN_MGMT_SB_ID);
 
 	return status;
 }