qcacmn: Loopback check for ucast frame after hmmc

Add a check to drop unicast frame being sent to same originating
VAP after hmmc conversion of IGMP control packets

Change-Id: Ic25812a7848af793075a0cb483100ebcf59d85b2

dp/wifi3.0/dp_rx.c

@@ -499,6 +499,8 @@ dp_rx_intrabss_fwd(struct dp_soc *soc,
 		len = QDF_NBUF_CB_RX_PKT_LEN(nbuf);
 		memset(nbuf_copy->cb, 0x0, sizeof(nbuf_copy->cb));
 
+		/* Set cb->ftype to intrabss FWD */
+		qdf_nbuf_set_tx_ftype(nbuf_copy, CB_FTYPE_INTRABSS_FWD);
 		if (dp_tx_send(dp_vdev_to_cdp_vdev(ta_peer->vdev), nbuf_copy)) {
 			DP_STATS_INC_PKT(ta_peer, rx.intra_bss.fail, 1, len);
 			tid_stats->fail_cnt[INTRABSS_DROP]++;

dp/wifi3.0/dp_tx.c

@@ -1505,6 +1505,39 @@ static inline void dp_non_std_tx_comp_free_buff(struct dp_tx_desc_s *tx_desc,
 }
 #endif
 
+/**
+ * dp_tx_frame_is_drop() - checks if the packet is loopback
+ * @vdev: DP vdev handle
+ * @nbuf: skb
+ *
+ * Return: 1 if frame needs to be dropped else 0
+ */
+int dp_tx_frame_is_drop(struct dp_vdev *vdev, uint8_t *srcmac, uint8_t *dstmac)
+{
+	struct dp_pdev *pdev = NULL;
+	struct dp_ast_entry *src_ast_entry = NULL;
+	struct dp_ast_entry *dst_ast_entry = NULL;
+	struct dp_soc *soc = NULL;
+
+	qdf_assert(vdev);
+	pdev = vdev->pdev;
+	qdf_assert(pdev);
+	soc = pdev->soc;
+
+	dst_ast_entry = dp_peer_ast_hash_find_by_pdevid
+				(soc, dstmac, vdev->pdev->pdev_id);
+
+	src_ast_entry = dp_peer_ast_hash_find_by_pdevid
+				(soc, srcmac, vdev->pdev->pdev_id);
+	if (dst_ast_entry && src_ast_entry) {
+		if (dst_ast_entry->peer->peer_ids[0] ==
+				src_ast_entry->peer->peer_ids[0])
+			return 1;
+	}
+
+	return 0;
+}
+
 /**
  * dp_tx_send_msdu_single() - Setup descriptor and enqueue single MSDU to TCL
  * @vdev: DP vdev handle

dp/wifi3.0/dp_tx.h

@@ -216,6 +216,7 @@ qdf_nbuf_t dp_tx_send_msdu_multiple(struct dp_vdev *vdev, qdf_nbuf_t nbuf,
 qdf_nbuf_t dp_tx_non_std(struct cdp_soc_t *soc_hdl, uint8_t vdev_id,
 			 enum ol_tx_spec tx_spec, qdf_nbuf_t msdu_list);
 #endif
+int dp_tx_frame_is_drop(struct dp_vdev *vdev, uint8_t *srcmac, uint8_t *dstmac);
 
 /**
  * dp_tx_comp_handler() - Tx completion handler