qcacmn: Handle tx_sniffer pakcets

Send tx_sniffer to firmware and handle ppdu completions accordingly.

Change-Id: Id19a8cba4fdcad88bca6ade8c30a587c2da26d19

dp/inc/cdp_txrx_cmn_struct.h

@@ -95,6 +95,8 @@
 #define CDP_MU_MAX_USER_INDEX (CDP_MU_MAX_USERS - 1)
 #define CDP_INVALID_PEER 0xffff
 #define CDP_INVALID_TID	 31
+#define CDP_INVALID_TX_ENCAP_TYPE	 6
+#define CDP_INVALID_SEC_TYPE		12
 
 #define CDP_DATA_TID_MAX 8
 #define CDP_DATA_NON_QOS_TID 16
@@ -406,6 +408,8 @@ enum cdp_sec_type {
  *  @tid: Transmit Identifier
  *  @tx_encap_type: Transmit encap type (i.e. Raw, Native Wi-Fi, Ethernet)
  *  @sec_type: sec_type to be passed to HAL
+ *  @is_tx_sniffer: Indicates if the packet has to be sniffed
+ *  @ppdu_cookie: 16-bit ppdu cookie that has to be replayed back in completions
  *
  *  This structure holds the parameters needed in the exception path of tx
  *
@@ -415,6 +419,8 @@ struct cdp_tx_exception_metadata {
 	uint8_t tid;
 	uint16_t tx_encap_type;
 	enum cdp_sec_type sec_type;
+	uint8_t is_tx_sniffer;
+	uint16_t ppdu_cookie;
 };
 
 typedef struct cdp_soc_t *ol_txrx_soc_handle;
@@ -1157,6 +1163,8 @@ struct cdp_tx_sojourn_stats {
  * @mu_group_id: mu group id
  * @rix: rate index
  * @cookie: cookie to used by upper layer
+ * @is_ppdu_cookie_valid : Indicates that ppdu_cookie is valid
+ * @ppdu_cookie: 16-bit ppdu_cookie
  */
 struct cdp_tx_completion_ppdu_user {
 	uint32_t completion_status:8,
@@ -1213,6 +1221,8 @@ struct cdp_tx_completion_ppdu_user {
 	uint32_t mu_group_id;
 	uint32_t rix;
 	struct cdp_stats_cookie *cookie;
+	uint8_t is_ppdu_cookie_valid;
+	uint16_t ppdu_cookie;
 };
 
 /**
@@ -1249,6 +1259,7 @@ struct cdp_tx_completion_ppdu_user {
  * @ppdu_end_timestamp: TSF at PPDU end
  * @ba_start_seq: Block Ack sequence number
  * @ba_bitmap: Block Ack bitmap
+ * @ppdu_cookie: 16-bit ppdu_cookie
  */
 struct cdp_tx_indication_mpdu_info {
 	uint32_t ppdu_id;
@@ -1278,6 +1289,7 @@ struct cdp_tx_indication_mpdu_info {
 	uint32_t ppdu_end_timestamp;
 	uint32_t ba_start_seq;
 	uint32_t ba_bitmap[CDP_BA_256_BIT_MAP_SIZE_DWORDS];
+	uint16_t ppdu_cookie;
 };
 
 /**

dp/inc/cdp_txrx_stats_struct.h

@@ -430,6 +430,7 @@ struct cdp_pkt_type {
  * @ru_start: RU start index
  * @ru_tones: RU tones size
  * @ru_loc: RU location 26/ 52/ 106/ 242/ 484 counter
+ * @num_ppdu_cookie_valid : Number of comp received with valid ppdu cookie
  */
 struct cdp_tx_stats {
 	struct cdp_pkt_info comp_pkt;
@@ -515,6 +516,7 @@ struct cdp_tx_stats {
 	uint32_t ru_start;
 	uint32_t ru_tones;
 	uint32_t ru_loc[MAX_RU_LOCATIONS];
+	uint32_t num_ppdu_cookie_valid;
 };
 
 /* struct cdp_rx_stats - rx Level Stats
@@ -662,6 +664,7 @@ struct cdp_rx_stats {
  * @completion_fw: packets completions received from fw
  * @cce_classified:Number of packets classified by CCE
  * @cce_classified_raw:Number of raw packets classified by CCE
+ * @sniffer_rcvd: Number of packets received with ppdu cookie
  */
 struct cdp_tx_ingress_stats {
 	struct cdp_pkt_info rcvd;
@@ -725,6 +728,7 @@ struct cdp_tx_ingress_stats {
 
 	uint32_t cce_classified;
 	uint32_t cce_classified_raw;
+	struct cdp_pkt_info sniffer_rcvd;
 };
 
 /* struct cdp_vdev_stats - vdev stats structure

dp/wifi3.0/dp_htt.c

@@ -155,6 +155,9 @@ dp_tx_stats_update(struct dp_soc *soc, struct dp_peer *peer,
 		return;
 	}
 
+	if (ppdu->is_ppdu_cookie_valid)
+		DP_STATS_INC(peer, tx.num_ppdu_cookie_valid, 1);
+
 	if (ppdu->mu_group_id <= MAX_MU_GROUP_ID &&
 	    ppdu->ppdu_type != HTT_PPDU_STATS_PPDU_TYPE_SU) {
 		if (unlikely(!(ppdu->mu_group_id & (MAX_MU_GROUP_ID - 1))))
@@ -1937,6 +1940,14 @@ static void dp_process_ppdu_stats_user_common_tlv(
 		ppdu_user_desc->mpdu_tried_mcast = 0;
 		ppdu_user_desc->mpdu_tried_ucast = 0;
 	}
+
+	tag_buf += 3;
+
+	if (HTT_PPDU_STATS_IS_OPAQUE_VALID_GET(*tag_buf)) {
+		ppdu_user_desc->ppdu_cookie =
+			HTT_PPDU_STATS_HOST_OPAQUE_COOKIE_GET(*tag_buf);
+		ppdu_user_desc->is_ppdu_cookie_valid = 1;
+	}
 }
 
 

dp/wifi3.0/dp_internal.h

@@ -376,6 +376,8 @@ static inline void dp_update_pdev_stats(struct dp_pdev *tgtobj,
 		srcobj->tx.nawds_mcast.bytes;
 	tgtobj->stats.tx.nawds_mcast_drop +=
 		srcobj->tx.nawds_mcast_drop;
+	tgtobj->stats.tx.num_ppdu_cookie_valid +=
+		srcobj->tx.num_ppdu_cookie_valid;
 	tgtobj->stats.tx.tx_failed += srcobj->tx.tx_failed;
 	tgtobj->stats.tx.ofdma += srcobj->tx.ofdma;
 	tgtobj->stats.tx.stbc += srcobj->tx.stbc;
@@ -482,6 +484,7 @@ static inline void dp_update_pdev_ingress_stats(struct dp_pdev *tgtobj,
 	DP_STATS_AGGR(tgtobj, srcobj, tx_i.dropped.headroom_insufficient);
 	DP_STATS_AGGR(tgtobj, srcobj, tx_i.cce_classified);
 	DP_STATS_AGGR(tgtobj, srcobj, tx_i.cce_classified_raw);
+	DP_STATS_AGGR_PKT(tgtobj, srcobj, tx_i.sniffer_rcvd);
 	DP_STATS_AGGR(tgtobj, srcobj, tx_i.mesh.exception_fw);
 	DP_STATS_AGGR(tgtobj, srcobj, tx_i.mesh.completion_fw);
 
@@ -562,6 +565,8 @@ static inline void dp_update_vdev_stats(struct cdp_vdev_stats *tgtobj,
 		srcobj->stats.tx.nawds_mcast.bytes;
 	tgtobj->tx.nawds_mcast_drop +=
 		srcobj->stats.tx.nawds_mcast_drop;
+	tgtobj->tx.num_ppdu_cookie_valid +=
+		srcobj->stats.tx.num_ppdu_cookie_valid;
 	tgtobj->tx.tx_failed += srcobj->stats.tx.tx_failed;
 	tgtobj->tx.ofdma += srcobj->stats.tx.ofdma;
 	tgtobj->tx.stbc += srcobj->stats.tx.stbc;

dp/wifi3.0/dp_tx.c

@@ -74,12 +74,13 @@ static const uint8_t sec_type_map[MAX_CDP_SEC_TYPE] = {
  * @queue: queue ids container for nbuf
  *
  * TX packet queue has 2 instances, software descriptors id and dma ring id
- * Based on tx feature and hardware configuration queue id combination could be
- * different.
+ * Based on tx feature and hardware configuration queue id combination
+ * could be different.
  * For example -
- * With XPS enabled,all TX descriptor pools and dma ring are assigned per cpu id
- * With no XPS,lock based resource protection, Descriptor pool ids are different
- * for each vdev, dma ring id will be same as single pdev id
+ * With XPS enabled,all TX descriptor pools and dma ring are assigned
+ * per cpu id
+ * With no XPS,lock based resource protection, Descriptor pool ids are
+ * different for each vdev, dma ring id will be same as single pdev id
  *
  * Return: None
  */
@@ -256,6 +257,7 @@ dp_tx_desc_release(struct dp_tx_desc_s *tx_desc, uint8_t desc_pool_id)
  * dp_tx_htt_metadata_prepare() - Prepare HTT metadata for special frames
  * @vdev: DP vdev Handle
  * @nbuf: skb
+ * @msdu_info: msdu_info required to create HTT metadata
  *
  * Prepares and fills HTT metadata in the frame pre-header for special frames
  * that should be transmitted using varying transmit parameters.
@@ -267,8 +269,9 @@ dp_tx_desc_release(struct dp_tx_desc_s *tx_desc, uint8_t desc_pool_id)
  *
  */
 static uint8_t dp_tx_prepare_htt_metadata(struct dp_vdev *vdev, qdf_nbuf_t nbuf,
-		uint32_t *meta_data)
+		struct dp_tx_msdu_info_s *msdu_info)
 {
+	uint32_t *meta_data = msdu_info->meta_data;
 	struct htt_tx_msdu_desc_ext2_t *desc_ext =
 				(struct htt_tx_msdu_desc_ext2_t *) meta_data;
 
@@ -285,7 +288,7 @@ static uint8_t dp_tx_prepare_htt_metadata(struct dp_vdev *vdev, qdf_nbuf_t nbuf,
 	htt_desc_size = sizeof(struct htt_tx_msdu_desc_ext2_t);
 	htt_desc_size_aligned = (htt_desc_size + 7) & ~0x7;
 
-	if (vdev->mesh_vdev) {
+	if (vdev->mesh_vdev || msdu_info->is_tx_sniffer) {
 		if (qdf_unlikely(qdf_nbuf_headroom(nbuf) <
 					htt_desc_size_aligned)) {
 			DP_STATS_INC(vdev,
@@ -732,8 +735,9 @@ struct dp_tx_desc_s *dp_tx_prepare_desc_single(struct dp_vdev *vdev,
 	/* Initialize the SW tx descriptor */
 	tx_desc->nbuf = nbuf;
 	tx_desc->frm_type = dp_tx_frm_std;
-	tx_desc->tx_encap_type = (tx_exc_metadata ?
-			tx_exc_metadata->tx_encap_type : vdev->tx_encap_type);
+	tx_desc->tx_encap_type = ((tx_exc_metadata &&
+		(tx_exc_metadata->tx_encap_type != CDP_INVALID_TX_ENCAP_TYPE)) ?
+		tx_exc_metadata->tx_encap_type : vdev->tx_encap_type);
 	tx_desc->vdev = vdev;
 	tx_desc->pdev = pdev;
 	tx_desc->msdu_ext_desc = NULL;
@@ -773,7 +777,9 @@ struct dp_tx_desc_s *dp_tx_prepare_desc_single(struct dp_vdev *vdev,
 	 *  |-----------------------------|
 	 */
 	if (qdf_unlikely((msdu_info->exception_fw)) ||
-				(vdev->opmode == wlan_op_mode_ocb)) {
+				(vdev->opmode == wlan_op_mode_ocb) ||
+				(tx_exc_metadata &&
+				tx_exc_metadata->is_tx_sniffer)) {
 		align_pad = ((unsigned long) qdf_nbuf_data(nbuf)) & 0x7;
 
 		if (qdf_unlikely(qdf_nbuf_headroom(nbuf) < align_pad)) {
@@ -789,7 +795,7 @@ struct dp_tx_desc_s *dp_tx_prepare_desc_single(struct dp_vdev *vdev,
 		}
 
 		htt_hdr_size = dp_tx_prepare_htt_metadata(vdev, nbuf,
-				msdu_info->meta_data);
+				msdu_info);
 		if (htt_hdr_size == 0)
 			goto failure;
 		tx_desc->pkt_offset = align_pad + htt_hdr_size;
@@ -1009,7 +1015,8 @@ static QDF_STATUS dp_tx_hw_enqueue(struct dp_soc *soc, struct dp_vdev *vdev,
 	qdf_dma_addr_t dma_addr;
 	uint8_t cached_desc[HAL_TX_DESC_LEN_BYTES];
 
-	enum cdp_sec_type sec_type = (tx_exc_metadata ?
+	enum cdp_sec_type sec_type = ((tx_exc_metadata &&
+			tx_exc_metadata->sec_type != CDP_INVALID_SEC_TYPE) ?
 			tx_exc_metadata->sec_type : vdev->sec_type);
 
 	/* Return Buffer Manager ID */
@@ -1758,6 +1765,36 @@ static qdf_nbuf_t dp_tx_prepare_sg(struct dp_vdev *vdev, qdf_nbuf_t nbuf,
 	return nbuf;
 }
 
+/**
+ * dp_tx_add_tx_sniffer_meta_data()- Add tx_sniffer meta hdr info
+ * @vdev: DP vdev handle
+ * @msdu_info: MSDU info to be setup in MSDU descriptor and MSDU extension desc.
+ * @ppdu_cookie: PPDU cookie that should be replayed in the ppdu completions
+ *
+ * Return: NULL on failure,
+ *         nbuf when extracted successfully
+ */
+static
+void dp_tx_add_tx_sniffer_meta_data(struct dp_vdev *vdev,
+				    struct dp_tx_msdu_info_s *msdu_info,
+				    uint16_t ppdu_cookie)
+{
+	struct htt_tx_msdu_desc_ext2_t *meta_data =
+		(struct htt_tx_msdu_desc_ext2_t *)&msdu_info->meta_data[0];
+
+	qdf_mem_zero(meta_data, sizeof(struct htt_tx_msdu_desc_ext2_t));
+
+	HTT_TX_MSDU_EXT2_DESC_FLAG_SEND_AS_STANDALONE_SET
+				(msdu_info->meta_data[5], 1);
+	HTT_TX_MSDU_EXT2_DESC_FLAG_HOST_OPAQUE_VALID_SET
+				(msdu_info->meta_data[5], 1);
+	HTT_TX_MSDU_EXT2_DESC_HOST_OPAQUE_COOKIE_SET
+				(msdu_info->meta_data[6], ppdu_cookie);
+
+	msdu_info->exception_fw = 1;
+	msdu_info->is_tx_sniffer = 1;
+}
+
 #ifdef MESH_MODE_SUPPORT
 
 /**
@@ -1862,9 +1899,17 @@ qdf_nbuf_t dp_tx_extract_mesh_meta_data(struct dp_vdev *vdev, qdf_nbuf_t nbuf,
  */
 static bool dp_check_exc_metadata(struct cdp_tx_exception_metadata *tx_exc)
 {
-	if ((tx_exc->tid > DP_MAX_TIDS && tx_exc->tid != HTT_INVALID_TID) ||
-	    tx_exc->tx_encap_type > htt_cmn_pkt_num_types ||
-	    tx_exc->sec_type > cdp_num_sec_types) {
+	bool invalid_tid = (tx_exc->tid > DP_MAX_TIDS && tx_exc->tid !=
+			    HTT_INVALID_TID);
+	bool invalid_encap_type = (tx_exc->tid > DP_MAX_TIDS && tx_exc->tid !=
+				   HTT_INVALID_TID);
+	bool invalid_sec_type = (tx_exc->sec_type > cdp_num_sec_types &&
+				 tx_exc->sec_type != CDP_INVALID_SEC_TYPE);
+	bool invalid_cookie = (tx_exc->is_tx_sniffer == 1 &&
+			       tx_exc->ppdu_cookie == 0);
+
+	if (invalid_tid || invalid_encap_type || invalid_sec_type ||
+	    invalid_cookie) {
 		return false;
 	}
 
@@ -1892,6 +1937,9 @@ qdf_nbuf_t dp_tx_send_exception(void *vap_dev, qdf_nbuf_t nbuf,
 
 	qdf_mem_zero(&msdu_info, sizeof(msdu_info));
 
+	if (!tx_exc_metadata)
+		goto fail;
+
 	msdu_info.tid = tx_exc_metadata->tid;
 
 	eh = (qdf_ether_header_t *)qdf_nbuf_data(nbuf);
@@ -1940,6 +1988,14 @@ qdf_nbuf_t dp_tx_send_exception(void *vap_dev, qdf_nbuf_t nbuf,
 		}
 	}
 
+	if (qdf_likely(tx_exc_metadata->is_tx_sniffer)) {
+		DP_STATS_INC_PKT(vdev, tx_i.sniffer_rcvd, 1,
+				 qdf_nbuf_len(nbuf));
+
+		dp_tx_add_tx_sniffer_meta_data(vdev, &msdu_info,
+					       tx_exc_metadata->ppdu_cookie);
+	}
+
 	/*
 	 * Get HW Queue to use for this frame.
 	 * TCL supports upto 4 DMA rings, out of which 3 rings are

dp/wifi3.0/dp_tx.h

@@ -117,6 +117,8 @@ struct dp_tx_queue {
  * @u.sg_info: Scatter Gather information for non-TSO SG frames
  * @meta_data: Mesh meta header information
  * @exception_fw: Duplicate frame to be sent to firmware
+ * @ppdu_cookie: 16-bit ppdu_cookie that has to be replayed back in completions
+ * @ix_tx_sniffer: Indicates if the packet has to be sniffed
  *
  * This structure holds the complete MSDU information needed to program the
  * Hardware TCL and MSDU extension descriptors for different frame types
@@ -133,6 +135,8 @@ struct dp_tx_msdu_info_s {
 	} u;
 	uint32_t meta_data[7];
 	uint8_t exception_fw;
+	uint16_t ppdu_cookie;
+	uint8_t is_tx_sniffer;
 };
 
 QDF_STATUS dp_tx_vdev_attach(struct dp_vdev *vdev);