qcacmn: Accept EAPOL packets in uncrypted error case

rx unencrypted eapol frames are dropped with dynamic WEP on de-tunnel mode.
Accept EAPOL packets alone in uncrypted path.

Change-Id: Ie576211c3d408fd7e319fba05c9d1badaa4b4676

dp/wifi3.0/dp_rx_err.c

@@ -796,7 +796,7 @@ dp_rx_process_err_unencrypted(struct dp_soc *soc, qdf_nbuf_t nbuf,
 	uint16_t msdu_len;
 	struct dp_vdev *vdev;
 	struct ether_header *eh;
-	bool isBroadcast;
+	bool is_broadcast;
 
 	/*
 	 * Check if DMA completed -- msdu_done is the last bit
@@ -849,6 +849,9 @@ dp_rx_process_err_unencrypted(struct dp_soc *soc, qdf_nbuf_t nbuf,
 	 */
 	qdf_nbuf_pull_head(nbuf, l2_hdr_offset + RX_PKT_TLVS_LEN);
 
+	if (vdev->rx_decap_type == htt_cmn_pkt_type_raw)
+		goto process_mesh;
+
 	/*
 	 * WAPI cert AP sends rekey frames as unencrypted.
 	 * Thus RXDMA will report unencrypted frame error.
@@ -857,17 +860,18 @@ dp_rx_process_err_unencrypted(struct dp_soc *soc, qdf_nbuf_t nbuf,
 	 */
 	if (qdf_nbuf_is_ipv4_wapi_pkt(nbuf)) {
 		qdf_nbuf_cb_update_peer_local_id(nbuf, peer->local_id);
-
-		if (qdf_likely(vdev->osif_rx)) {
-			DP_STATS_INC(peer, rx.to_stack.num, 1);
-			vdev->osif_rx(vdev->osif_vdev, nbuf);
-		} else {
-			qdf_nbuf_free(nbuf);
-			DP_STATS_INC(soc, rx.err.invalid_vdev, 1);
-		}
-
-		return;
+		goto process_rx;
 	}
+	/*
+	 * In dynamic WEP case rekey frames are not encrypted
+	 * similar to WAPI. Allow EAPOL when 8021+wep is enabled and
+	 * key install is already done
+	 */
+	if ((vdev->sec_type == cdp_sec_type_wep104) &&
+	    (qdf_nbuf_is_ipv4_eapol_pkt(nbuf)))
+		goto process_rx;
+
+process_mesh:
 
 	/* Drop & free packet if mesh mode not enabled */
 	if (!vdev->mesh_vdev) {
@@ -884,18 +888,18 @@ dp_rx_process_err_unencrypted(struct dp_soc *soc, qdf_nbuf_t nbuf,
 
 		qdf_nbuf_free(nbuf);
 		return;
-
 	}
 	dp_rx_fill_mesh_stats(vdev, nbuf, rx_tlv_hdr, peer);
 
+process_rx:
 	if (qdf_unlikely(hal_rx_msdu_end_da_is_mcbc_get(rx_tlv_hdr) &&
 				(vdev->rx_decap_type ==
 				htt_cmn_pkt_type_ethernet))) {
 		eh = (struct ether_header *)qdf_nbuf_data(nbuf);
-		isBroadcast = (IEEE80211_IS_BROADCAST
+		is_broadcast = (IEEE80211_IS_BROADCAST
 				(eh->ether_dhost)) ? 1 : 0 ;
 		DP_STATS_INC_PKT(peer, rx.multicast, 1, qdf_nbuf_len(nbuf));
-		if (isBroadcast) {
+		if (is_broadcast) {
 			DP_STATS_INC_PKT(peer, rx.bcast, 1,
 					qdf_nbuf_len(nbuf));
 		}