diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
index 09e9398..6549b84 100644
--- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
@@ -123,7 +123,10 @@ struct dpaa2_queue {
 	uint64_t rx_pkts;
 	uint64_t tx_pkts;
 	uint64_t err_pkts;
-	struct queue_storage_info_t *q_storage;
+	union {
+		struct queue_storage_info_t *q_storage;
+		struct qbman_result *cscn;
+	};
 };
 
 struct swp_active_dqs {
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 797e71d..80f1cd7 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -177,8 +177,13 @@
 
 	for (i = 0; i < priv->nb_tx_queues; i++) {
 		mc_q->dev = dev;
-		mc_q->flow_id = DPNI_NEW_FLOW_ID;
+		mc_q->flow_id = 0xffff;
 		priv->tx_vq[i] = mc_q++;
+		dpaa2_q = (struct dpaa2_queue *)priv->tx_vq[i];
+		dpaa2_q->cscn = rte_malloc(NULL,
+					   sizeof(struct qbman_result), 16);
+		if (!dpaa2_q->cscn)
+			goto fail_tx;
 	}
 
 	vq_id = 0;
@@ -191,6 +196,14 @@
 	}
 
 	return 0;
+fail_tx:
+	i -= 1;
+	while (i >= 0) {
+		dpaa2_q = (struct dpaa2_queue *)priv->tx_vq[i];
+		rte_free(dpaa2_q->cscn);
+		priv->tx_vq[i--] = NULL;
+	}
+	i = priv->nb_rx_queues;
 fail:
 	i -= 1;
 	mc_q = priv->rx_vq[0];
@@ -320,7 +333,7 @@
 	PMD_INIT_FUNC_TRACE();
 
 	/* Return if queue already configured */
-	if (dpaa2_q->flow_id != DPNI_NEW_FLOW_ID)
+	if (dpaa2_q->flow_id != 0xffff)
 		return 0;
 
 	memset(&tx_conf_cfg, 0, sizeof(struct dpni_queue));
@@ -358,6 +371,36 @@
 	}
 	dpaa2_q->tc_index = tc_id;
 
+	if (priv->flags & DPAA2_TX_CGR_SUPPORT) {
+		struct dpni_congestion_notification_cfg cong_notif_cfg;
+
+		cong_notif_cfg.units = DPNI_CONGESTION_UNIT_BYTES;
+		/* Notify about congestion when the queue size is 32 KB */
+		cong_notif_cfg.threshold_entry = CONG_ENTER_TX_THRESHOLD;
+		/* Notify that the queue is not congested when the data in
+		 * the queue is below this thershold.
+		 */
+		cong_notif_cfg.threshold_exit = CONG_EXIT_TX_THRESHOLD;
+		cong_notif_cfg.message_ctx = 0;
+		cong_notif_cfg.message_iova = (uint64_t)dpaa2_q->cscn;
+		cong_notif_cfg.dest_cfg.dest_type = DPNI_DEST_NONE;
+		cong_notif_cfg.notification_mode =
+					 DPNI_CONG_OPT_WRITE_MEM_ON_ENTER |
+					 DPNI_CONG_OPT_WRITE_MEM_ON_EXIT |
+					 DPNI_CONG_OPT_COHERENT_WRITE;
+
+		ret = dpni_set_congestion_notification(dpni, CMD_PRI_LOW,
+						       priv->token,
+						       DPNI_QUEUE_TX,
+						       tc_id,
+						       &cong_notif_cfg);
+		if (ret) {
+			PMD_INIT_LOG(ERR,
+			   "Error in setting tx congestion notification: = %d",
+			   -ret);
+			return -ret;
+		}
+	}
 	dev->data->tx_queues[tx_queue_id] = dpaa2_q;
 	return 0;
 }
@@ -513,12 +556,22 @@
 static void
 dpaa2_dev_close(struct rte_eth_dev *dev)
 {
+	struct rte_eth_dev_data *data = dev->data;
 	struct dpaa2_dev_priv *priv = dev->data->dev_private;
 	struct fsl_mc_io *dpni = (struct fsl_mc_io *)priv->hw;
-	int ret;
+	int i, ret;
+	struct dpaa2_queue *dpaa2_q;
 
 	PMD_INIT_FUNC_TRACE();
 
+	for (i = 0; i < data->nb_tx_queues; i++) {
+		dpaa2_q = (struct dpaa2_queue *)data->tx_queues[i];
+		if (!dpaa2_q->cscn) {
+			rte_free(dpaa2_q->cscn);
+			dpaa2_q->cscn = NULL;
+		}
+	}
+
 	/* Clean the device first */
 	ret = dpni_reset(dpni, CMD_PRI_LOW, priv->token);
 	if (ret) {
@@ -832,6 +885,9 @@ void dpaa2_dev_stats_reset(struct rte_eth_dev *dev)
 	priv->max_vlan_filters = attr.vlan_filter_entries;
 	priv->flags = 0;
 
+	priv->flags |= DPAA2_TX_CGR_SUPPORT;
+	PMD_INIT_LOG(INFO, "Enable the tx congestion control support");
+
 	/* Allocate memory for hardware structure for queues */
 	ret = dpaa2_alloc_rx_tx_queues(eth_dev);
 	if (ret) {
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.h b/drivers/net/dpaa2/dpaa2_ethdev.h
index 7fa7e7d..e7728ba 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.h
+++ b/drivers/net/dpaa2/dpaa2_ethdev.h
@@ -47,9 +47,23 @@
 /*default tc to be used for ,congestion, distribution etc configuration. */
 #define DPAA2_DEF_TC		0
 
+/* Threshold for a queue to *Enter* Congestion state.
+ * It is set to 32KB
+ */
+#define CONG_ENTER_TX_THRESHOLD   (32 * 1024)
+
+/* Threshold for a queue to *Exit* Congestion state.
+ */
+#define CONG_EXIT_TX_THRESHOLD    (24 * 1024)
+
 /* Size of the input SMMU mapped memory required by MC */
 #define DIST_PARAM_IOVA_SIZE 256
 
+/* Enable TX Congestion control support
+ * default is disable
+ */
+#define DPAA2_TX_CGR_SUPPORT	0x01
+
 struct dpaa2_dev_priv {
 	void *hw;
 	int32_t hw_id;
diff --git a/drivers/net/dpaa2/dpaa2_rxtx.c b/drivers/net/dpaa2/dpaa2_rxtx.c
index 9b7539a..0670ae3 100644
--- a/drivers/net/dpaa2/dpaa2_rxtx.c
+++ b/drivers/net/dpaa2/dpaa2_rxtx.c
@@ -406,6 +406,10 @@ static inline int __attribute__((hot))
 
 	/*Clear the unused FD fields before sending*/
 	while (nb_pkts) {
+		/*Check if the queue is congested*/
+		if (qbman_result_SCN_state_in_mem(dpaa2_q->cscn))
+			goto skip_tx;
+
 		frames_to_send = (nb_pkts >> 3) ? MAX_TX_RING_SLOTS : nb_pkts;
 
 		for (loop = 0; loop < frames_to_send; loop++) {
diff --git a/drivers/net/dpaa2/mc/dpni.c b/drivers/net/dpaa2/mc/dpni.c
index 3330614..145336d 100644
--- a/drivers/net/dpaa2/mc/dpni.c
+++ b/drivers/net/dpaa2/mc/dpni.c
@@ -626,6 +626,53 @@ int dpni_set_tx_confirmation_mode(struct fsl_mc_io	*mc_io,
 	return mc_send_command(mc_io, &cmd);
 }
 
+int dpni_set_congestion_notification(struct fsl_mc_io	*mc_io,
+				     uint32_t		cmd_flags,
+					   uint16_t		token,
+				     enum dpni_queue_type qtype,
+					   uint8_t		tc_id,
+			const struct dpni_congestion_notification_cfg *cfg)
+{
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(
+			DPNI_CMDID_SET_CONGESTION_NOTIFICATION,
+			cmd_flags,
+			token);
+	DPNI_CMD_SET_CONGESTION_NOTIFICATION(cmd, qtype, tc_id, cfg);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+int dpni_get_congestion_notification(struct fsl_mc_io	*mc_io,
+				     uint32_t		cmd_flags,
+					   uint16_t		token,
+				     enum dpni_queue_type qtype,
+					   uint8_t		tc_id,
+				struct dpni_congestion_notification_cfg *cfg)
+{
+	struct mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(
+			DPNI_CMDID_GET_CONGESTION_NOTIFICATION,
+			cmd_flags,
+			token);
+	DPNI_CMD_GET_CONGESTION_NOTIFICATION(cmd, qtype, tc_id);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	DPNI_RSP_GET_CONGESTION_NOTIFICATION(cmd, cfg);
+
+	return 0;
+}
+
 int dpni_get_api_version(struct fsl_mc_io *mc_io,
 			 uint32_t cmd_flags,
 			   uint16_t *major_ver,
diff --git a/drivers/net/dpaa2/mc/fsl_dpni.h b/drivers/net/dpaa2/mc/fsl_dpni.h
index ef14f85..10dccc7 100644
--- a/drivers/net/dpaa2/mc/fsl_dpni.h
+++ b/drivers/net/dpaa2/mc/fsl_dpni.h
@@ -72,10 +72,7 @@
  * All flows within traffic class considered; see dpni_set_queue()
  */
 #define DPNI_ALL_TC_FLOWS			(uint16_t)(-1)
-/**
- * Generate new flow ID; see dpni_set_queue()
- */
-#define DPNI_NEW_FLOW_ID			(uint16_t)(-1)
+
 /**
  * Tx traffic is always released to a buffer pool on transmit, there are no
  * resources allocated to have the frames confirmed back to the source after
@@ -961,6 +958,16 @@ int dpni_set_rx_tc_dist(struct fsl_mc_io			*mc_io,
 			uint16_t				token,
 			uint8_t					tc_id,
 			const struct dpni_rx_tc_dist_cfg	*cfg);
+/**
+ * enum dpni_congestion_unit - DPNI congestion units
+ * @DPNI_CONGESTION_UNIT_BYTES: bytes units
+ * @DPNI_CONGESTION_UNIT_FRAMES: frames units
+ */
+enum dpni_congestion_unit {
+	DPNI_CONGESTION_UNIT_BYTES = 0,
+	DPNI_CONGESTION_UNIT_FRAMES
+};
+
 
 /**
  * enum dpni_dest - DPNI destination types
@@ -981,6 +988,118 @@ enum dpni_dest {
 	DPNI_DEST_DPCON = 2
 };
 
+/**
+ * struct dpni_dest_cfg - Structure representing DPNI destination parameters
+ * @dest_type: Destination type
+ * @dest_id: Either DPIO ID or DPCON ID, depending on the destination type
+ * @priority: Priority selection within the DPIO or DPCON channel; valid values
+ *		are 0-1 or 0-7, depending on the number of priorities in that
+ *		channel; not relevant for 'DPNI_DEST_NONE' option
+ */
+struct dpni_dest_cfg {
+	enum dpni_dest	dest_type;
+	int		dest_id;
+	uint8_t		priority;
+};
+
+/* DPNI congestion options */
+
+/**
+ * CSCN message is written to message_iova once entering a
+ * congestion state (see 'threshold_entry')
+ */
+#define DPNI_CONG_OPT_WRITE_MEM_ON_ENTER	0x00000001
+/**
+ * CSCN message is written to message_iova once exiting a
+ * congestion state (see 'threshold_exit')
+ */
+#define DPNI_CONG_OPT_WRITE_MEM_ON_EXIT		0x00000002
+/**
+ * CSCN write will attempt to allocate into a cache (coherent write);
+ * valid only if 'DPNI_CONG_OPT_WRITE_MEM_<X>' is selected
+ */
+#define DPNI_CONG_OPT_COHERENT_WRITE		0x00000004
+/**
+ * if 'dest_cfg.dest_type != DPNI_DEST_NONE' CSCN message is sent to
+ * DPIO/DPCON's WQ channel once entering a congestion state
+ * (see 'threshold_entry')
+ */
+#define DPNI_CONG_OPT_NOTIFY_DEST_ON_ENTER	0x00000008
+/**
+ * if 'dest_cfg.dest_type != DPNI_DEST_NONE' CSCN message is sent to
+ * DPIO/DPCON's WQ channel once exiting a congestion state
+ * (see 'threshold_exit')
+ */
+#define DPNI_CONG_OPT_NOTIFY_DEST_ON_EXIT	0x00000010
+/**
+ * if 'dest_cfg.dest_type != DPNI_DEST_NONE' when the CSCN is written to the
+ * sw-portal's DQRR, the DQRI interrupt is asserted immediately (if enabled)
+ */
+#define DPNI_CONG_OPT_INTR_COALESCING_DISABLED	0x00000020
+
+/**
+ * struct dpni_congestion_notification_cfg - congestion notification
+ *		configuration
+ * @units: units type
+ * @threshold_entry: above this threshold we enter a congestion state.
+ *	set it to '0' to disable it
+ * @threshold_exit: below this threshold we exit the congestion state.
+ * @message_ctx: The context that will be part of the CSCN message
+ * @message_iova: I/O virtual address (must be in DMA-able memory),
+ *	must be 16B aligned; valid only if 'DPNI_CONG_OPT_WRITE_MEM_<X>' is
+ *	contained in 'options'
+ * @dest_cfg: CSCN can be send to either DPIO or DPCON WQ channel
+ * @notification_mode: Mask of available options; use 'DPNI_CONG_OPT_<X>' values
+ */
+
+struct dpni_congestion_notification_cfg {
+	enum dpni_congestion_unit	units;
+	uint32_t			threshold_entry;
+	uint32_t			threshold_exit;
+	uint64_t			message_ctx;
+	uint64_t			message_iova;
+	struct dpni_dest_cfg		dest_cfg;
+	uint16_t			notification_mode;
+};
+
+/**
+ * dpni_set_congestion_notification() - Set traffic class congestion
+ *	notification configuration
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPNI object
+ * @qtype:	Type of queue - Rx, Tx and Tx confirm types are supported
+ * @tc_id:	Traffic class selection (0-7)
+ * @cfg:	congestion notification configuration
+ *
+ * Return:	'0' on Success; error code otherwise.
+ */
+int dpni_set_congestion_notification(struct fsl_mc_io		*mc_io,
+				     uint32_t			cmd_flags,
+				     uint16_t			token,
+				     enum dpni_queue_type	qtype,
+				     uint8_t			tc_id,
+			const struct dpni_congestion_notification_cfg *cfg);
+
+/**
+ * dpni_get_congestion_notification() - Get traffic class congestion
+ *	notification configuration
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPNI object
+ * @qtype:	Type of queue - Rx, Tx and Tx confirm types are supported
+ * @tc_id:	Traffic class selection (0-7)
+ * @cfg:	congestion notification configuration
+ *
+ * Return:	'0' on Success; error code otherwise.
+ */
+int dpni_get_congestion_notification(struct fsl_mc_io		*mc_io,
+				     uint32_t			cmd_flags,
+				     uint16_t			token,
+				     enum dpni_queue_type	qtype,
+				     uint8_t			tc_id,
+				struct dpni_congestion_notification_cfg *cfg);
+
 
 /**
  * struct dpni_queue - Queue structure
@@ -1077,6 +1196,8 @@ enum dpni_confirmation_mode {
  * Calling this function with 'mode' set to DPNI_CONF_SINGLE switches all
  * Tx confirmations to a shared Tx conf queue.  The ID of the queue when
  * calling dpni_set/get_queue is -1.
+ * Tx confirmation mode can only be changed while the DPNI is disabled.
+ * Executing this command while the DPNI is enabled will return an error.
  *
  * Return:	'0' on Success; Error code otherwise.
  */
diff --git a/drivers/net/dpaa2/mc/fsl_dpni_cmd.h b/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
index bb92ea8..383649e 100644
--- a/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
+++ b/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
@@ -82,6 +82,8 @@
 #define DPNI_CMDID_GET_BUFFER_LAYOUT                   ((0x264 << 4) | (0x1))
 #define DPNI_CMDID_SET_BUFFER_LAYOUT                   ((0x265 << 4) | (0x1))
 
+#define DPNI_CMDID_SET_CONGESTION_NOTIFICATION         ((0x267 << 4) | (0x1))
+#define DPNI_CMDID_GET_CONGESTION_NOTIFICATION         ((0x268 << 4) | (0x1))
 #define DPNI_CMDID_GET_OFFLOAD                         ((0x26B << 4) | (0x1))
 #define DPNI_CMDID_SET_OFFLOAD                         ((0x26C << 4) | (0x1))
 #define DPNI_CMDID_SET_TX_CONFIRMATION_MODE            ((0x266 << 4) | (0x1))
@@ -331,4 +333,38 @@
 #define DPNI_RSP_GET_TX_CONFIRMATION_MODE(cmd, mode) \
 	MC_RSP_OP(cmd, 0, 32, 8, enum dpni_confirmation_mode, mode)
 
+#define DPNI_CMD_SET_CONGESTION_NOTIFICATION(cmd, qtype, tc, cfg) \
+do { \
+	MC_CMD_OP(cmd, 0,  0,  8, enum dpni_queue_type, qtype); \
+	MC_CMD_OP(cmd, 0,  8,  8, uint8_t, tc); \
+	MC_CMD_OP(cmd, 1,  0, 32, uint32_t, (cfg)->dest_cfg.dest_id); \
+	MC_CMD_OP(cmd, 1, 32, 16, uint16_t, (cfg)->notification_mode); \
+	MC_CMD_OP(cmd, 1, 48,  8, uint8_t, (cfg)->dest_cfg.priority); \
+	MC_CMD_OP(cmd, 1, 56,  4, enum dpni_dest, (cfg)->dest_cfg.dest_type); \
+	MC_CMD_OP(cmd, 1, 60,  2, enum dpni_congestion_unit, (cfg)->units); \
+	MC_CMD_OP(cmd, 2,  0, 64, uint64_t, (cfg)->message_iova); \
+	MC_CMD_OP(cmd, 3,  0, 64, uint64_t, (cfg)->message_ctx); \
+	MC_CMD_OP(cmd, 4,  0, 32, uint32_t, (cfg)->threshold_entry); \
+	MC_CMD_OP(cmd, 4, 32, 32, uint32_t, (cfg)->threshold_exit); \
+} while (0)
+
+#define DPNI_CMD_GET_CONGESTION_NOTIFICATION(cmd, qtype, tc) \
+do { \
+	MC_CMD_OP(cmd, 0,  0,  8, enum dpni_queue_type, qtype); \
+	MC_CMD_OP(cmd, 0,  8,  8, uint8_t, tc); \
+} while (0)
+
+#define DPNI_RSP_GET_CONGESTION_NOTIFICATION(cmd, cfg) \
+do { \
+	MC_RSP_OP(cmd, 1,  0, 32, uint32_t, (cfg)->dest_cfg.dest_id); \
+	MC_RSP_OP(cmd, 1,  0, 16, uint16_t, (cfg)->notification_mode); \
+	MC_RSP_OP(cmd, 1, 48,  8, uint8_t, (cfg)->dest_cfg.priority); \
+	MC_RSP_OP(cmd, 1, 56,  4, enum dpni_dest, (cfg)->dest_cfg.dest_type); \
+	MC_RSP_OP(cmd, 1, 60,  2, enum dpni_congestion_unit, (cfg)->units); \
+	MC_RSP_OP(cmd, 2,  0, 64, uint64_t, (cfg)->message_iova); \
+	MC_RSP_OP(cmd, 3,  0, 64, uint64_t, (cfg)->message_ctx); \
+	MC_RSP_OP(cmd, 4,  0, 32, uint32_t, (cfg)->threshold_entry); \
+	MC_RSP_OP(cmd, 4, 32, 32, uint32_t, (cfg)->threshold_exit); \
+} while (0)
+
 #endif /* _FSL_DPNI_CMD_H */
