qcacmn: Add support to send packet marked by upper layer to FW

Upper layer (OS_IF) can mark certain packets to be sent
to FW. Mark such packets as exception, so that it is sent
to the FW.

Change-Id: I44af2b06793712be7236f831b6b2604123d72bb1
CRs-Fixed: 2813172

dp/wifi3.0/dp_tx.c

@@ -902,6 +902,29 @@ dp_tx_wds_ext(struct dp_soc *soc, struct dp_vdev *vdev, uint16_t peer_id,
 }
 #endif
 
+#ifdef WLAN_DP_FEATURE_MARK_ICMP_REQ_TO_FW
+/**
+ * dp_tx_is_nbuf_marked_exception() - Check if the packet has been marked as
+ *				      exception by the upper layer (OS_IF)
+ * @soc: DP soc handle
+ * @nbuf: packet to be transmitted
+ *
+ * Returns: 1 if the packet is marked as exception,
+ *	    0, if the packet is not marked as exception.
+ */
+static inline int dp_tx_is_nbuf_marked_exception(struct dp_soc *soc,
+						 qdf_nbuf_t nbuf)
+{
+	return QDF_NBUF_CB_TX_PACKET_TO_FW(nbuf);
+}
+#else
+static inline int dp_tx_is_nbuf_marked_exception(struct dp_soc *soc,
+						 qdf_nbuf_t nbuf)
+{
+	return 0;
+}
+#endif
+
 /**
  * dp_tx_desc_prepare_single - Allocate and prepare Tx descriptor
  * @vdev: DP vdev handle
@@ -961,6 +984,9 @@ struct dp_tx_desc_s *dp_tx_prepare_desc_single(struct dp_vdev *vdev,
 	if (qdf_unlikely(dp_is_tx_extended(vdev, tx_exc_metadata)))
 		return tx_desc;
 
+	/* Packets marked by upper layer (OS-IF) to be sent to FW */
+	if (dp_tx_is_nbuf_marked_exception(soc, nbuf))
+		is_exception = 1;
 	/*
 	 * For special modes (vdev_type == ocb or mesh), data frames should be
 	 * transmitted using varying transmit parameters (tx spec) which include

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,
@@ -329,7 +330,8 @@ 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)