qcacmn: Add support to send ICMP pkts to FW

Add support to send the ICMP pakets to the firmware
at a certain interval.

Change-Id: I44af2b06793712be7236f831b6b2604123d72bb1
CRs-Fixed: 2813172

dp/wifi3.0/dp_tx.c

@@ -1414,7 +1414,7 @@ dp_tx_hw_enqueue(struct dp_soc *soc, struct dp_vdev *vdev,
 	hal_tx_desc_set_addr_search_flags(hal_tx_desc_cached,
 					  vdev->hal_desc_addr_search_flags);
 
-	if (tx_desc->flags & DP_TX_DESC_FLAG_TO_FW)
+	if (tx_desc->flags & DP_TX_DESC_FLAG_TO_FW || msdu_info->send_to_fw)
 		hal_tx_desc_set_to_fw(hal_tx_desc_cached, 1);
 
 	/* verify checksum offload configuration*/
@@ -3020,6 +3020,63 @@ void dp_tx_nawds_handler(struct dp_soc *soc, struct dp_vdev *vdev,
 	qdf_spin_unlock_bh(&vdev->peer_list_lock);
 }
 
+#ifdef WLAN_DP_FEATURE_SEND_ICMP_TO_FW
+/**
+ * dp_tx_mark_icmp_req_exception() - Mark the ICMP request at certain intervals
+ *				     as exception packets to be sent to FW.
+ * @soc: DP soc handle
+ * @nbuf: packet to be transmitted
+ * @msdu_info: MSDU info where the exception flag is setup.
+ *
+ * This function sets the is_exception flag in the msdu_info if the current
+ * packet is an ICMP request packet after a preset interval post the last
+ * marked ICMP request packet.
+ * The time interval is decided by an INI, which can be set to -1, to indicate
+ * that all the ICMP request packets need to be sent to FW.
+ *
+ * Since HTT metadata is not to be sent to FW, exception_fw flag cannot be used.
+ *
+ * Returns: None
+ */
+static void
+dp_tx_mark_icmp_req_exception(struct dp_soc *soc,
+			      qdf_nbuf_t nbuf,
+			      struct dp_tx_msdu_info_s *msdu_info)
+{
+	uint64_t curr_time, time_delta;
+	int time_interval_ms;
+	static uint64_t prev_marked_icmp_time;
+
+	/* If its an ICMP request packet, to_fw will be set in context block */
+	if (!qdf_unlikely(QDF_NBUF_CB_TX_PACKET_TO_FW(nbuf) == 1))
+		return;
+
+	time_interval_ms = wlan_cfg_send_icmp_req_to_fw(soc->wlan_cfg_ctx);
+	if (!time_interval_ms)
+		return;
+
+	if (time_interval_ms == WLAN_CFG_SEND_ALL_ICMP_REQ_TO_FW) {
+		msdu_info->send_to_fw = 1;
+		return;
+	}
+
+	curr_time = qdf_get_log_timestamp();
+	time_delta = curr_time - prev_marked_icmp_time;
+	if (time_delta >= (time_interval_ms *
+			   QDF_LOG_TIMESTAMP_CYCLES_PER_10_US * 100)) {
+		msdu_info->send_to_fw = 1;
+		prev_marked_icmp_time = curr_time;
+	}
+}
+#else
+static inline void
+dp_tx_mark_icmp_req_exception(struct dp_soc *soc,
+			      qdf_nbuf_t nbuf,
+			      struct dp_tx_msdu_info_s *msdu_info)
+{
+}
+#endif
+
 /**
  * dp_tx_send() - Transmit a frame on a given VAP
  * @soc: DP soc handle
@@ -3070,6 +3127,8 @@ qdf_nbuf_t dp_tx_send(struct cdp_soc_t *soc_hdl, uint8_t vdev_id,
 	dp_tx_wds_ext(soc, vdev, peer_id, &msdu_info);
 	DP_STATS_INC_PKT(vdev, tx_i.rcvd, 1, qdf_nbuf_len(nbuf));
 
+	dp_tx_mark_icmp_req_exception(soc, nbuf, &msdu_info);
+
 	if (qdf_unlikely(vdev->mesh_vdev)) {
 		qdf_nbuf_t nbuf_mesh = dp_tx_extract_mesh_meta_data(vdev, nbuf,
 								&msdu_info);

dp/wifi3.0/dp_tx.h

@@ -143,6 +143,7 @@ struct dp_tx_queue {
  * @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
+ * @send_to_fw: Send the packet to FW, without HTT meta data
  *
  * This structure holds the complete MSDU information needed to program the
  * Hardware TCL and MSDU extension descriptors for different frame types
@@ -164,6 +165,7 @@ struct dp_tx_msdu_info_s {
 	uint16_t ppdu_cookie;
 	uint16_t ast_idx;
 	uint16_t ast_hash;
+	uint8_t send_to_fw;
 };
 
 /**

qdf/linux/src/i_qdf_nbuf.h

@@ -192,6 +192,7 @@ typedef union {
  *                       +          (TXRX)|(HTT)|(HTC)|(HIF)|(CE)|(FREE)]
  * @tx.trace.is_packet_priv:
  * @tx.trace.packet_track: {NBUF_TX_PKT_[(DATA)|(MGMT)]_TRACK}
+ * @tx.trace.to_fw: Flag to indicate send this packet to FW
  * @tx.trace.proto_type: bitmap of NBUF_PKT_TRAC_TYPE[(EAPOL)|(DHCP)|
  *                          + (MGMT_ACTION)] - 4 bits
  * @tx.trace.dp_trace: flag (Datapath trace)
@@ -274,8 +275,8 @@ struct qdf_nbuf_cb {
 			union {
 				uint8_t packet_state;
 				uint8_t dp_trace:1,
-					packet_track:4,
-					rsrvd:3;
+					packet_track:3,
+					rsrvd:4;
 			} trace;
 			uint16_t vdev_id:8,
 				 tid_val:4,
@@ -327,7 +328,8 @@ struct qdf_nbuf_cb {
 			struct {
 				uint8_t packet_state:7,
 					is_packet_priv:1;
-				uint8_t packet_track:4,
+				uint8_t packet_track:3,
+					to_fw:1,
 					proto_type:4;
 				uint8_t dp_trace:1,
 					is_bcast:1,
@@ -496,6 +498,10 @@ QDF_COMPILE_TIME_ASSERT(qdf_nbuf_cb_size,
 	(((struct qdf_nbuf_cb *) \
 		((skb)->cb))->u.tx.trace.packet_track)
 
+#define QDF_NBUF_CB_TX_PACKET_TO_FW(skb)\
+	(((struct qdf_nbuf_cb *) \
+		((skb)->cb))->u.tx.trace.to_fw)
+
 #define QDF_NBUF_CB_RX_PACKET_TRACK(skb)\
 		(((struct qdf_nbuf_cb *) \
 			((skb)->cb))->u.rx.trace.packet_track)