qcacmn: Access peer and its parameters only if peer_id changes

1. avoid accessing CFG parameter in per pkt path.
2. Access peer, vdev and pdev only when current peer_id
   is different from previous peer_id.
3. Avoid HKv1 and v2 checks in WDS learning path.

Change-Id: Id7fb7a29c642480f8ca58738dbb0c92130e44ecd

dp/wifi3.0/dp_rx.h

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2016-2022 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. 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
@@ -2342,4 +2342,45 @@ qdf_nbuf_t dp_rx_nbuf_alloc(struct dp_soc *soc,
 			      rx_desc_pool->buf_alignment, FALSE);
 }
 #endif
+
+static inline
+struct dp_peer *dp_rx_get_peer_and_vdev(struct dp_soc *soc,
+					qdf_nbuf_t nbuf,
+					uint16_t peer_id,
+					bool pkt_capture_offload,
+					struct dp_vdev **vdev,
+					struct dp_pdev **rx_pdev,
+					uint32_t *dsf,
+					uint32_t *old_tid)
+{
+	struct dp_peer *peer = NULL;
+
+	peer = dp_peer_get_ref_by_id(soc, peer_id, DP_MOD_ID_RX);
+
+	if (qdf_likely(peer)) {
+		*vdev = peer->vdev;
+	} else {
+		nbuf->next = NULL;
+		dp_rx_deliver_to_pkt_capture_no_peer(soc, nbuf,
+						     pkt_capture_offload);
+		if (!pkt_capture_offload)
+			dp_rx_deliver_to_stack_no_peer(soc, nbuf);
+
+		goto end;
+	}
+
+	if (qdf_unlikely(!(*vdev))) {
+		qdf_nbuf_free(nbuf);
+		DP_STATS_INC(soc, rx.err.invalid_vdev, 1);
+		goto end;
+	}
+
+	*rx_pdev = (*vdev)->pdev;
+	*dsf = (*rx_pdev)->delay_stats_flag;
+	*old_tid = 0xff;
+
+end:
+	return peer;
+}
+
 #endif /* _DP_RX_H */

dp/wifi3.0/dp_txrx_wds.h

@@ -1,6 +1,6 @@
-
 /*
  * Copyright (c) 2016-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. 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
@@ -157,31 +157,10 @@ dp_rx_wds_add_or_update_ast(struct dp_soc *soc, struct dp_peer *ta_peer,
 	struct dp_ast_entry *ast;
 	uint32_t flags = DP_AST_FLAGS_HM;
 	uint32_t ret = 0;
-	struct dp_pdev *pdev = ta_peer->vdev->pdev;
 	uint8_t wds_src_mac[QDF_MAC_ADDR_SIZE];
 
-	/* For AP mode : Do wds source port learning only if it is a
+	if (!(is_chfrag_start && is_ad4_valid))
-	 * 4-address mpdu
+		return;
-	 *
-	 * For STA mode : Frames from RootAP backend will be in 3-address mode,
-	 * till RootAP does the WDS source port learning; Hence in repeater/STA
-	 * mode, we enable learning even in 3-address mode , to avoid RootAP
-	 * backbone getting wrongly learnt as MEC on repeater
-	 */
-	if (ta_peer->vdev->opmode != wlan_op_mode_sta) {
-		if (!(is_chfrag_start && is_ad4_valid))
-			return;
-	} else {
-		/* For HKv2 Source port learing is not needed in STA mode
-		 * as we have support in HW
-		 *
-		 * if sa_valid bit is set there is a AST entry added on AP VAP
-		 * and this peer has roamed behind ROOT AP in this case proceed
-		 * further to check for roaming
-		 */
-		if (soc->ast_override_support && !is_sa_valid)
-			return;
-	}
 
 	if (qdf_unlikely(!is_sa_valid)) {
 		qdf_mem_copy(wds_src_mac,
@@ -234,20 +213,14 @@ dp_rx_wds_add_or_update_ast(struct dp_soc *soc, struct dp_peer *ta_peer,
 			 * smart monitor is enabled and send add_ast command
 			 * to FW.
 			 */
-			dp_monitor_neighbour_peer_add_ast(pdev, ta_peer,
+			dp_monitor_neighbour_peer_add_ast(ta_peer->vdev->pdev,
+							  ta_peer,
 							  wds_src_mac, nbuf,
 							  flags);
 			return;
 		}
 	}
 
-
-	if ((ast->type == CDP_TXRX_AST_TYPE_WDS_HM) ||
-	    (ast->type == CDP_TXRX_AST_TYPE_WDS_HM_SEC)) {
-		qdf_spin_unlock_bh(&soc->ast_lock);
-		return;
-	}
-
 	/*
 	 * Ensure we are updating the right AST entry by
 	 * validating ast_idx.
@@ -257,7 +230,12 @@ dp_rx_wds_add_or_update_ast(struct dp_soc *soc, struct dp_peer *ta_peer,
 	if (ast->is_mapped && (ast->ast_idx == sa_idx))
 		ast->is_active = TRUE;
 
-	if (sa_sw_peer_id != ta_peer->peer_id) {
+	if (ast->peer_id != ta_peer->peer_id) {
+		if ((ast->type == CDP_TXRX_AST_TYPE_WDS_HM) ||
+		    (ast->type == CDP_TXRX_AST_TYPE_WDS_HM_SEC)) {
+			qdf_spin_unlock_bh(&soc->ast_lock);
+			return;
+		}
 
 		if ((ast->type != CDP_TXRX_AST_TYPE_STATIC) &&
 		    (ast->type != CDP_TXRX_AST_TYPE_SELF) &&

dp/wifi3.0/li/dp_li_rx.c

@@ -43,13 +43,12 @@
 #include "dp_rx_buffer_pool.h"
 
 static inline
-bool is_sa_da_idx_valid(struct dp_soc *soc, uint8_t *rx_tlv_hdr,
+bool is_sa_da_idx_valid(uint32_t max_ast,
 			qdf_nbuf_t nbuf, struct hal_rx_msdu_metadata msdu_info)
 {
-	if ((qdf_nbuf_is_sa_valid(nbuf) &&
+	if ((qdf_nbuf_is_sa_valid(nbuf) && (msdu_info.sa_idx > max_ast)) ||
-	    (msdu_info.sa_idx > wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx))) ||
 	    (!qdf_nbuf_is_da_mcbc(nbuf) && qdf_nbuf_is_da_valid(nbuf) &&
-	     (msdu_info.da_idx > wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx))))
+	     (msdu_info.da_idx > max_ast)))
 		return false;
 
 	return true;
@@ -156,13 +155,10 @@ dp_rx_intrabss_fwd_li(struct dp_soc *soc,
 		      struct dp_peer *ta_peer,
 		      uint8_t *rx_tlv_hdr,
 		      qdf_nbuf_t nbuf,
-		      struct hal_rx_msdu_metadata msdu_metadata)
+		      struct hal_rx_msdu_metadata msdu_metadata,
+		      struct cdp_tid_rx_stats *tid_stats)
 {
 	uint8_t tx_vdev_id;
-	uint8_t tid = qdf_nbuf_get_tid_val(nbuf);
-	uint8_t ring_id = QDF_NBUF_CB_RX_CTX_ID(nbuf);
-	struct cdp_tid_rx_stats *tid_stats = &ta_peer->vdev->pdev->stats.
-					tid_stats.tid_rx_stats[ring_id][tid];
 
 	/* if it is a broadcast pkt (eg: ARP) and it is not its own
 	 * source, then clone the pkt and send the cloned pkt for
@@ -252,6 +248,10 @@ uint32_t dp_rx_process_li(struct dp_intr *int_ctx,
 	qdf_nbuf_t ebuf_tail;
 	uint8_t pkt_capture_offload = 0;
 	int max_reap_limit;
+	uint32_t old_tid;
+	uint32_t peer_ext_stats;
+	uint32_t dsf;
+	uint32_t max_ast;
 
 	DP_HIST_INIT();
 
@@ -282,6 +282,12 @@ more_data:
 	qdf_mem_zero(&msdu_desc_info, sizeof(msdu_desc_info));
 	qdf_mem_zero(head, sizeof(head));
 	qdf_mem_zero(tail, sizeof(tail));
+	old_tid = 0xff;
+	dsf = 0;
+	peer_ext_stats = 0;
+	max_ast = 0;
+	rx_pdev = NULL;
+	tid_stats = NULL;
 
 	if (qdf_unlikely(dp_rx_srng_access_start(int_ctx, soc, hal_ring_hdl))) {
 		/*
@@ -305,6 +311,8 @@ more_data:
 	last_prefetched_hw_desc = dp_srng_dst_prefetch(hal_soc, hal_ring_hdl,
 						       num_pending);
 
+	peer_ext_stats = wlan_cfg_is_peer_ext_stats_enabled(soc->wlan_cfg_ctx);
+	max_ast = wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx);
 	/*
 	 * start reaping the buffers from reo ring and queue
 	 * them in per vdev queue.
@@ -607,12 +615,27 @@ done:
 		}
 
 		if (qdf_unlikely(!peer)) {
-			peer = dp_peer_get_ref_by_id(soc, peer_id,
+			peer = dp_rx_get_peer_and_vdev(soc, nbuf, peer_id,
-						     DP_MOD_ID_RX);
+						       pkt_capture_offload,
+						       &vdev,
+						       &rx_pdev, &dsf,
+						       &old_tid);
+			if (qdf_unlikely(!peer) || qdf_unlikely(!vdev)) {
+				nbuf = next;
+				continue;
+			}
 		} else if (peer && peer->peer_id != peer_id) {
 			dp_peer_unref_delete(peer, DP_MOD_ID_RX);
-			peer = dp_peer_get_ref_by_id(soc, peer_id,
+
-						     DP_MOD_ID_RX);
+			peer = dp_rx_get_peer_and_vdev(soc, nbuf, peer_id,
+						       pkt_capture_offload,
+						       &vdev,
+						       &rx_pdev, &dsf,
+						       &old_tid);
+			if (qdf_unlikely(!peer) || qdf_unlikely(!vdev)) {
+				nbuf = next;
+				continue;
+			}
 		}
 
 		if (peer) {
@@ -625,25 +648,6 @@ done:
 
 		rx_bufs_used++;
 
-		if (qdf_likely(peer)) {
-			vdev = peer->vdev;
-		} else {
-			nbuf->next = NULL;
-			dp_rx_deliver_to_pkt_capture_no_peer(
-					soc, nbuf, pkt_capture_offload);
-			if (!pkt_capture_offload)
-				dp_rx_deliver_to_stack_no_peer(soc, nbuf);
-			nbuf = next;
-			continue;
-		}
-
-		if (qdf_unlikely(!vdev)) {
-			qdf_nbuf_free(nbuf);
-			nbuf = next;
-			DP_STATS_INC(soc, rx.err.invalid_vdev, 1);
-			continue;
-		}
-
 		/* when hlos tid override is enabled, save tid in
 		 * skb->priority
 		 */
@@ -651,16 +655,16 @@ done:
 					DP_TXRX_HLOS_TID_OVERRIDE_ENABLED))
 			qdf_nbuf_set_priority(nbuf, tid);
 
-		rx_pdev = vdev->pdev;
 		DP_RX_TID_SAVE(nbuf, tid);
-		if (qdf_unlikely(rx_pdev->delay_stats_flag) ||
+		if (qdf_unlikely(dsf) || qdf_unlikely(peer_ext_stats) ||
-		    qdf_unlikely(wlan_cfg_is_peer_ext_stats_enabled(
-				 soc->wlan_cfg_ctx)) ||
 		    dp_rx_pkt_tracepoints_enabled())
 			qdf_nbuf_set_timestamp(nbuf);
 
-		tid_stats =
+		if (qdf_likely(old_tid != tid)) {
+			tid_stats =
 		&rx_pdev->stats.tid_stats.tid_rx_stats[reo_ring_num][tid];
+			old_tid = tid;
+		}
 
 		/*
 		 * Check if DMA completed -- msdu_done is the last bit
@@ -850,7 +854,7 @@ done:
 			 * Drop the packet if sa_idx and da_idx OOB or
 			 * sa_sw_peerid is 0
 			 */
-			if (!is_sa_da_idx_valid(soc, rx_tlv_hdr, nbuf,
+			if (!is_sa_da_idx_valid(max_ast, nbuf,
 						msdu_metadata)) {
 				qdf_nbuf_free(nbuf);
 				nbuf = next;
@@ -880,7 +884,8 @@ done:
 			if (dp_rx_check_ap_bridge(vdev))
 				if (dp_rx_intrabss_fwd_li(soc, peer, rx_tlv_hdr,
 							  nbuf,
-							  msdu_metadata)) {
+							  msdu_metadata,
+							  tid_stats)) {
 					nbuf = next;
 					tid_stats->intrabss_cnt++;
 					continue; /* Get next desc */