qcacmn: changes to read all MSDUs of MPDU in single reap

We need to read all MSDUs of MPDU in single reap for RAW mode
to prepare the complete SG list

Change-Id: Iaf2d0b9f32bf10181ce7646bf60c4d7e70aed36b
CRs-fixed: 2320143

dp/wifi3.0/dp_rx.c

@@ -1631,17 +1631,6 @@ bool dp_rx_reap_loop_pkt_limit_hit(struct dp_soc *soc, int num_reaped)
 	return limit_hit;
 }
 
-static inline
-bool dp_rx_hp_oos_update_limit_hit(struct dp_soc *soc, int hp_oos_updates)
-{
-	bool limit_hit = false;
-	struct wlan_cfg_dp_soc_ctxt *cfg = soc->wlan_cfg_ctx;
-
-	limit_hit =
-		(hp_oos_updates >= cfg->rx_hp_oos_update_limit) ? true : false;
-	return limit_hit;
-}
-
 static inline bool dp_rx_enable_eol_data_check(struct dp_soc *soc)
 {
 	return soc->wlan_cfg_ctx->rx_enable_eol_data_check;
@@ -1654,12 +1643,6 @@ bool dp_rx_reap_loop_pkt_limit_hit(struct dp_soc *soc, int num_reaped)
 	return false;
 }
 
-static inline
-bool dp_rx_hp_oos_update_limit_hit(struct dp_soc *soc, int hp_oos_updates)
-{
-	return false;
-}
-
 static inline bool dp_rx_enable_eol_data_check(struct dp_soc *soc)
 {
 	return false;
@@ -1717,8 +1700,10 @@ uint32_t dp_rx_process(struct dp_intr *int_ctx, void *hal_ring,
 	uint32_t num_rx_bufs_reaped = 0;
 	uint32_t intr_id;
 	struct hif_opaque_softc *scn;
-	uint32_t hp_oos_updates = 0;
 	int32_t tid = 0;
+	bool is_prev_msdu_last = true;
+	uint32_t num_entries_avail = 0;
+
 	DP_HIST_INIT();
 
 	qdf_assert_always(soc && hal_ring);
@@ -1763,38 +1748,8 @@ more_data:
 	 * them in per vdev queue.
 	 * Process the received pkts in a different per vdev loop.
 	 */
-	hp_oos_updates = 0;
-	while (qdf_likely(quota)) {
-		ring_desc = hal_srng_dst_get_next(hal_soc, hal_ring);
-
-		/*
-		 * in case HW has updated hp after we cached the hp
-		 * ring_desc can be NULL even there are entries
-		 * available in the ring. Update the cached_hp
-		 * and reap the buffers available to read complete
-		 * mpdu in one reap
-		 *
-		 * This is needed for RAW mode we have to read all
-		 * msdus corresponding to amsdu in one reap to create
-		 * SG list properly but due to mismatch in cached_hp
-		 * and actual hp sometimes we are unable to read
-		 * complete mpdu in one reap.
-		 */
-		if (qdf_unlikely(!ring_desc)) {
-			if (dp_rx_hp_oos_update_limit_hit(soc,
-							  hp_oos_updates)) {
-				break;
-			}
-			hp_oos_updates++;
-			if (hal_srng_dst_peek_sync(hal_soc, hal_ring)) {
-				DP_STATS_INC(soc, rx.hp_oos, 1);
-				hal_srng_access_end_unlocked(hal_soc,
-							     hal_ring);
-				continue;
-			} else {
-				break;
-			}
-		}
+	while (qdf_likely(quota &&
+			  (ring_desc = hal_srng_dst_peek(hal_soc, hal_ring)))) {
 
 		error = HAL_RX_ERROR_STATUS_GET(ring_desc);
 		ring_id = hal_srng_ring_id_get(hal_ring);
@@ -1834,8 +1789,6 @@ more_data:
 						   ring_desc, rx_desc);
 		}
 
-		rx_bufs_reaped[rx_desc->pool_id]++;
-
 		/* TODO */
 		/*
 		 * Need a separate API for unmapping based on
@@ -1851,13 +1804,45 @@ more_data:
 		/* Get MPDU DESC info */
 		hal_rx_mpdu_desc_info_get(ring_desc, &mpdu_desc_info);
 
+		/* Get MSDU DESC info */
+		hal_rx_msdu_desc_info_get(ring_desc, &msdu_desc_info);
+
+		if (qdf_unlikely(mpdu_desc_info.mpdu_flags &
+				HAL_MPDU_F_RAW_AMPDU)) {
+			/* previous msdu has end bit set, so current one is
+			 * the new MPDU
+			 */
+			if (is_prev_msdu_last) {
+				is_prev_msdu_last = false;
+				/* Get number of entries available in HW ring */
+				num_entries_avail =
+				hal_srng_dst_num_valid(hal_soc, hal_ring, 1);
+
+				/* For new MPDU check if we can read complete
+				 * MPDU by comparing the number of buffers
+				 * available and number of buffers needed to
+				 * reap this MPDU
+				 */
+				if (((msdu_desc_info.msdu_len /
+				     (RX_BUFFER_SIZE - RX_PKT_TLVS_LEN) + 1)) >
+				     num_entries_avail)
+					break;
+			} else {
+				if (msdu_desc_info.msdu_flags &
+				    HAL_MSDU_F_LAST_MSDU_IN_MPDU)
+					is_prev_msdu_last = true;
+			}
+			qdf_nbuf_set_raw_frame(rx_desc->nbuf, 1);
+		}
+
+		/* Pop out the descriptor*/
+		hal_srng_dst_get_next(hal_soc, hal_ring);
+
+		rx_bufs_reaped[rx_desc->pool_id]++;
 		peer_mdata = mpdu_desc_info.peer_meta_data;
 		QDF_NBUF_CB_RX_PEER_ID(rx_desc->nbuf) =
 			DP_PEER_METADATA_PEER_ID_GET(peer_mdata);
 
-		/* Get MSDU DESC info */
-		hal_rx_msdu_desc_info_get(ring_desc, &msdu_desc_info);
-
 		/*
 		 * save msdu flags first, last and continuation msdu in
 		 * nbuf->cb, also save mcbc, is_da_valid, is_sa_valid and
@@ -2050,9 +2035,7 @@ done:
 			qdf_nbuf_set_sa_valid(nbuf, is_sa_vld);
 
 			qdf_nbuf_pull_head(nbuf, RX_PKT_TLVS_LEN);
-		}
-		else if (qdf_unlikely(vdev->rx_decap_type ==
-				htt_cmn_pkt_type_raw)) {
+		} else if (qdf_nbuf_is_raw_frame(nbuf)) {
 			msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf);
 			nbuf = dp_rx_sg_create(nbuf, rx_tlv_hdr);
 

dp/wifi3.0/dp_stats.c

@@ -5463,8 +5463,7 @@ dp_print_soc_rx_stats(struct dp_soc *soc)
 	DP_PRINT_STATS("RX frag wait: %d", soc->stats.rx.rx_frag_wait);
 	DP_PRINT_STATS("RX frag err: %d", soc->stats.rx.rx_frag_err);
 
-	DP_PRINT_STATS("RX HP out_of_sync: %d %d", soc->stats.rx.hp_oos,
-		       soc->stats.rx.hp_oos2);
+	DP_PRINT_STATS("RX HP out_of_sync: %d", soc->stats.rx.hp_oos2);
 	DP_PRINT_STATS("RX Reap Loop Pkt Limit Hit: %d",
 		       soc->stats.rx.reap_loop_pkt_limit_hit);
 	DP_PRINT_STATS("RX DESC invalid magic: %u",

dp/wifi3.0/dp_types.h

@@ -669,11 +669,8 @@ struct dp_soc_stats {
 		uint32_t rx_frag_err;
 		/* No of reinjected packets */
 		uint32_t reo_reinject;
-
 		/* Reap loop packet limit hit */
 		uint32_t reap_loop_pkt_limit_hit;
-		/* Head pointer Out of sync during reap loop*/
-		uint32_t hp_oos;
 		/* Head pointer Out of sync at the end of dp_rx_process */
 		uint32_t hp_oos2;
 		struct {