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From: Hemant Agrawal <hemant.agrawal@nxp.com>
To: <dev@dpdk.org>
Cc: <ferruh.yigit@intel.com>, <shreyansh.jain@nxp.com>
Subject: [dpdk-dev] [PATCH v2 09/20] net/dpaa2: add support for tail drop on queue
Date: Mon, 15 May 2017 18:07:33 +0530	[thread overview]
Message-ID: <1494851864-26029-11-git-send-email-hemant.agrawal@nxp.com> (raw)
In-Reply-To: <1494851864-26029-1-git-send-email-hemant.agrawal@nxp.com>

This will help in limiting the size of queues and avoid
them growing practicaly infinite.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 drivers/net/dpaa2/dpaa2_ethdev.c    | 19 +++++++++
 drivers/net/dpaa2/dpaa2_ethdev.h    |  8 ++++
 drivers/net/dpaa2/mc/dpni.c         | 50 ++++++++++++++++++++++
 drivers/net/dpaa2/mc/fsl_dpni.h     | 85 +++++++++++++++++++++++++++++++++++++
 drivers/net/dpaa2/mc/fsl_dpni_cmd.h | 29 +++++++++++++
 5 files changed, 191 insertions(+)

diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 80f1cd7..0526e26 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -309,6 +309,25 @@
 		return -1;
 	}
 
+	if (!(priv->flags & DPAA2_RX_TAILDROP_OFF)) {
+		struct dpni_taildrop taildrop;
+
+		taildrop.enable = 1;
+		/*enabling per rx queue congestion control */
+		taildrop.threshold = CONG_THRESHOLD_RX_Q;
+		taildrop.units = DPNI_CONGESTION_UNIT_BYTES;
+		PMD_INIT_LOG(DEBUG, "Enabling Early Drop on queue = %d",
+			     rx_queue_id);
+		ret = dpni_set_taildrop(dpni, CMD_PRI_LOW, priv->token,
+					DPNI_CP_QUEUE, DPNI_QUEUE_RX,
+					dpaa2_q->tc_index, flow_id, &taildrop);
+		if (ret) {
+			PMD_INIT_LOG(ERR, "Error in setting the rx flow"
+				     " err : = %d\n", ret);
+			return -1;
+		}
+	}
+
 	dev->data->rx_queues[rx_queue_id] = dpaa2_q;
 	return 0;
 }
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.h b/drivers/net/dpaa2/dpaa2_ethdev.h
index e7728ba..3254b99 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.h
+++ b/drivers/net/dpaa2/dpaa2_ethdev.h
@@ -56,6 +56,11 @@
  */
 #define CONG_EXIT_TX_THRESHOLD    (24 * 1024)
 
+/* RX queue tail drop threshold
+ * currently considering 32 KB packets
+ */
+#define CONG_THRESHOLD_RX_Q  (32 * 1024)
+
 /* Size of the input SMMU mapped memory required by MC */
 #define DIST_PARAM_IOVA_SIZE 256
 
@@ -64,6 +69,9 @@
  */
 #define DPAA2_TX_CGR_SUPPORT	0x01
 
+/* Disable RX tail drop, default is enable */
+#define DPAA2_RX_TAILDROP_OFF	0x04
+
 struct dpaa2_dev_priv {
 	void *hw;
 	int32_t hw_id;
diff --git a/drivers/net/dpaa2/mc/dpni.c b/drivers/net/dpaa2/mc/dpni.c
index 145336d..ad33282 100644
--- a/drivers/net/dpaa2/mc/dpni.c
+++ b/drivers/net/dpaa2/mc/dpni.c
@@ -784,3 +784,53 @@ int dpni_reset_statistics(struct fsl_mc_io *mc_io,
 	/* send command to mc*/
 	return mc_send_command(mc_io, &cmd);
 }
+
+int dpni_set_taildrop(struct fsl_mc_io *mc_io,
+		      uint32_t cmd_flags,
+		     uint16_t token,
+			 enum dpni_congestion_point cg_point,
+			 enum dpni_queue_type q_type,
+			 uint8_t tc,
+			 uint8_t q_index,
+			 struct dpni_taildrop *taildrop)
+{
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TAILDROP,
+					  cmd_flags,
+					  token);
+	DPNI_CMD_SET_TAILDROP(cmd, cg_point, q_type, tc, q_index, taildrop);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+int dpni_get_taildrop(struct fsl_mc_io *mc_io,
+		      uint32_t cmd_flags,
+		     uint16_t token,
+			 enum dpni_congestion_point cg_point,
+			 enum dpni_queue_type q_type,
+			 uint8_t tc,
+			 uint8_t q_index,
+			 struct dpni_taildrop *taildrop)
+{
+	struct mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_TAILDROP,
+					  cmd_flags,
+					  token);
+	DPNI_CMD_GET_TAILDROP(cmd, cg_point, q_type, tc, q_index);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	DPNI_RSP_GET_TAILDROP(cmd, taildrop);
+
+	return 0;
+}
diff --git a/drivers/net/dpaa2/mc/fsl_dpni.h b/drivers/net/dpaa2/mc/fsl_dpni.h
index 10dccc7..68e30df 100644
--- a/drivers/net/dpaa2/mc/fsl_dpni.h
+++ b/drivers/net/dpaa2/mc/fsl_dpni.h
@@ -1335,4 +1335,89 @@ int dpni_reset_statistics(struct fsl_mc_io *mc_io,
 			  uint32_t cmd_flags,
 			  uint16_t token);
 
+/**
+ * enum dpni_congestion_point - Structure representing congestion point
+ * @DPNI_CP_QUEUE:	Set taildrop per queue, identified by QUEUE_TYPE, TC and
+ *				QUEUE_INDEX
+ * @DPNI_CP_GROUP:	Set taildrop per queue group. Depending on options used
+ *				to define the DPNI this can be either per
+ *				TC (default) or per interface
+ *				(DPNI_OPT_SHARED_CONGESTION set at DPNI create).
+ *				QUEUE_INDEX is ignored if this type is used.
+ */
+enum dpni_congestion_point {
+	DPNI_CP_QUEUE,
+	DPNI_CP_GROUP,
+};
+
+/**
+ * struct dpni_taildrop - Structure representing the taildrop
+ * @enable:	Indicates whether the taildrop is active or not.
+ * @units:	Indicates the unit of THRESHOLD. Queue taildrop only
+ *			supports byte units, this field is ignored and
+ *			assumed = 0 if CONGESTION_POINT is 0.
+ * @threshold:	Threshold value, in units identified by UNITS field. Value 0
+ *			cannot be used as a valid taildrop threshold,
+ *			THRESHOLD must be > 0 if the taildrop is
+ *			enabled.
+ */
+struct dpni_taildrop {
+	char enable;
+	enum dpni_congestion_unit units;
+	uint32_t threshold;
+};
+
+/**
+ * dpni_set_taildrop() - Set taildrop per queue or TC
+ *
+ * Setting a per-TC taildrop (cg_point = DPNI_CP_GROUP) will reset any current
+ * congestion notification or early drop (WRED) configuration previously applied
+ * to the same TC.
+ *
+ * @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
+ * @cg_point:	Congestion point.  DPNI_CP_QUEUE is only supported in
+ *		combination with DPNI_QUEUE_RX.
+ * @q_type:	Queue type, can be DPNI_QUEUE_RX or DPNI_QUEUE_TX.
+ * @tc:		Traffic class to apply this taildrop to
+ * @q_index:	Index of the queue if the DPNI supports multiple queues for
+ *			traffic distribution.
+ *			Ignored if CONGESTION_POINT is not DPNI_CP_QUEUE.
+ * @taildrop:	Taildrop structure
+ *
+ * Return:  '0' on Success; Error code otherwise.
+ */
+int dpni_set_taildrop(struct fsl_mc_io *mc_io,
+		      uint32_t cmd_flags,
+		      uint16_t token,
+		      enum dpni_congestion_point cg_point,
+		      enum dpni_queue_type q_type,
+		      uint8_t tc,
+		      uint8_t q_index,
+		      struct dpni_taildrop *taildrop);
+
+/**
+ * dpni_get_taildrop() - Get taildrop information
+ * @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
+ * @cg_point:	Congestion point
+ * @q_type:
+ * @tc:		Traffic class to apply this taildrop to
+ * @q_index:	Index of the queue if the DPNI supports multiple queues for
+ *			traffic distribution. Ignored if CONGESTION_POINT
+ *			is not 0.
+ * @taildrop:	Taildrop structure
+ *
+ * Return:  '0' on Success; Error code otherwise.
+ */
+int dpni_get_taildrop(struct fsl_mc_io *mc_io,
+		      uint32_t cmd_flags,
+		      uint16_t token,
+		      enum dpni_congestion_point cg_point,
+		      enum dpni_queue_type q_type,
+		      uint8_t tc,
+		      uint8_t q_index,
+		      struct dpni_taildrop *taildrop);
 #endif /* __FSL_DPNI_H */
diff --git a/drivers/net/dpaa2/mc/fsl_dpni_cmd.h b/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
index 383649e..41a4d54 100644
--- a/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
+++ b/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
@@ -76,6 +76,8 @@
 #define DPNI_CMDID_RESET_STATISTICS                    ((0x25E << 4) | (0x1))
 #define DPNI_CMDID_GET_QUEUE                           ((0x25F << 4) | (0x1))
 #define DPNI_CMDID_SET_QUEUE                           ((0x260 << 4) | (0x1))
+#define DPNI_CMDID_GET_TAILDROP                        ((0x261 << 4) | (0x1))
+#define DPNI_CMDID_SET_TAILDROP                        ((0x262 << 4) | (0x1))
 
 #define DPNI_CMDID_GET_PORT_MAC_ADDR                   ((0x263 << 4) | (0x1))
 
@@ -326,6 +328,33 @@
 	MC_RSP_OP(cmd, 0, 16, 16, uint16_t, minor);\
 } while (0)
 
+#define DPNI_CMD_GET_TAILDROP(cmd, cp, q_type, tc, q_index) \
+do { \
+	MC_CMD_OP(cmd, 0,  0,  8, enum dpni_congestion_point, cp); \
+	MC_CMD_OP(cmd, 0,  8,  8, enum dpni_queue_type, q_type); \
+	MC_CMD_OP(cmd, 0, 16,  8, uint8_t, tc); \
+	MC_CMD_OP(cmd, 0, 24,  8, uint8_t, q_index); \
+} while (0)
+
+#define DPNI_RSP_GET_TAILDROP(cmd, taildrop) \
+do { \
+	MC_RSP_OP(cmd, 1,  0,  1, char, (taildrop)->enable); \
+	MC_RSP_OP(cmd, 1, 16,  8, enum dpni_congestion_unit, \
+				(taildrop)->units); \
+	MC_RSP_OP(cmd, 1, 32, 32, uint32_t, (taildrop)->threshold); \
+} while (0)
+
+#define DPNI_CMD_SET_TAILDROP(cmd, cp, q_type, tc, q_index, taildrop) \
+do { \
+	MC_CMD_OP(cmd, 0,  0,  8, enum dpni_congestion_point, cp); \
+	MC_CMD_OP(cmd, 0,  8,  8, enum dpni_queue_type, q_type); \
+	MC_CMD_OP(cmd, 0, 16,  8, uint8_t, tc); \
+	MC_CMD_OP(cmd, 0, 24,  8, uint8_t, q_index); \
+	MC_CMD_OP(cmd, 1,  0,  1, char, (taildrop)->enable); \
+	MC_CMD_OP(cmd, 1, 16,  8, enum dpni_congestion_unit, \
+				(taildrop)->units); \
+	MC_CMD_OP(cmd, 1, 32, 32, uint32_t, (taildrop)->threshold); \
+} while (0)
 
 #define DPNI_CMD_SET_TX_CONFIRMATION_MODE(cmd, mode) \
 	MC_CMD_OP(cmd, 0, 32, 8, enum dpni_confirmation_mode, mode)
-- 
1.9.1

  parent reply	other threads:[~2017-05-15 12:38 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-19 13:09 [dpdk-dev] [PATCH 1/4] net/dpaa2: stop using software annotation Hemant Agrawal
2017-04-19 13:09 ` [dpdk-dev] [PATCH 2/4] net/dpaa2: improve the error handling in dev init Hemant Agrawal
2017-05-12 13:51   ` Ferruh Yigit
2017-04-19 13:09 ` [dpdk-dev] [PATCH 3/4] bus/fslmc: support for multiple parallel dq requests Hemant Agrawal
2017-05-12 13:53   ` Ferruh Yigit
2017-04-19 13:09 ` [dpdk-dev] [PATCH 4/4] net/dpaa2: support parallel recv mode Hemant Agrawal
2017-05-12 13:48   ` Ferruh Yigit
2017-05-15  8:26     ` Hemant Agrawal
2017-05-15 12:37 ` [dpdk-dev] [PATCH v2 00/20] NXP DPAA2 PMD functional enhancements Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 01/20] mk: change to cortex-a72 Hemant Agrawal
2017-05-15 16:49     ` Ferruh Yigit
2017-05-16 15:06       ` Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 02/20] net/dpaa2: remove port level buffer layout definition Hemant Agrawal
2017-05-15 16:50     ` Ferruh Yigit
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 03/20] net/dpaa2: stop using software annotation Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 04/20] net/dpaa2: improve the error handling in dev init Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 05/20] bus/fslmc: support for parallel Rx DQ requests Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 06/20] net/dpaa2: support parallel Rx mode Hemant Agrawal
2017-05-15 12:37   ` Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 07/20] bus/fslmc: export qbman results in map file Hemant Agrawal
2017-05-15 16:55     ` Ferruh Yigit
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 08/20] net/dpaa2: add support for congestion notification Hemant Agrawal
2017-05-15 12:37   ` Hemant Agrawal [this message]
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 10/20] bus/fslmc: update TAILQ usages in dpaa2 objects Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 11/20] net/dpaa2: add support for MAC address filtering Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 12/20] net/dpaa2: add support for multicast promiscuous mode Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 13/20] net/dpaa2: add support for VLAN filter and offload Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 14/20] net/dpaa2: add support for VLAN strip Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 15/20] net/dpaa2: add link status config support Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 16/20] net/dpaa2: add support for flow control Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 17/20] net/dpaa2: configure jumbo frames Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 18/20] bus/fslmc: add support to detect soc version Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 19/20] net/dpaa2: add support for Firmware Version get Hemant Agrawal
2017-05-15 12:37   ` [dpdk-dev] [PATCH v2 20/20] bus/fslmc: reducing the debug log messages Hemant Agrawal
2017-05-22  9:39   ` [dpdk-dev] [PATCH v3 00/20] NXP DPAA2 PMD functional enhancements Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 01/20] mk: change to cortex-a72 Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 02/20] net/dpaa2: remove port level buffer layout definition Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 03/20] net/dpaa2: stop using software annotation Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 04/20] net/dpaa2: improve the error handling in dev init Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 05/20] bus/fslmc: support for parallel Rx DQ requests Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 06/20] net/dpaa2: support parallel Rx in eth pmd Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 07/20] bus/fslmc: export qbman results in map file Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 08/20] net/dpaa2: add support for congestion notification Hemant Agrawal
2017-05-24 11:45       ` Ferruh Yigit
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 09/20] net/dpaa2: add support for tail drop on queue Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 10/20] bus/fslmc: update TAILQ usages in dpaa2 objects Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 11/20] net/dpaa2: add support for MAC address filtering Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 12/20] net/dpaa2: add support for multicast promiscuous mode Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 13/20] net/dpaa2: add support for VLAN filter and offload Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 14/20] net/dpaa2: add support for VLAN strip Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 15/20] net/dpaa2: add link status config support Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 16/20] net/dpaa2: add support for flow control Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 17/20] net/dpaa2: configure jumbo frames Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 18/20] bus/fslmc: add support to detect soc version Hemant Agrawal
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 19/20] net/dpaa2: add support for Firmware Version get Hemant Agrawal
2017-05-24 11:43       ` Ferruh Yigit
2017-05-22  9:39     ` [dpdk-dev] [PATCH v3 20/20] bus/fslmc: reducing the debug log messages Hemant Agrawal
2017-05-24 11:49     ` [dpdk-dev] [PATCH v3 00/20] NXP DPAA2 PMD functional enhancements Ferruh Yigit
2017-05-26  7:51       ` Hemant Agrawal
2017-05-26  6:51     ` [dpdk-dev] [PATCH v4 " Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 01/20] mk: change to cortex-a72 Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 02/20] net/dpaa2: remove port level buffer layout definition Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 03/20] net/dpaa2: stop using software annotation Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 04/20] net/dpaa2: improve the error handling in dev init Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 05/20] bus/fslmc: support for parallel Rx DQ requests Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 06/20] net/dpaa2: support parallel Rx in eth pmd Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 07/20] bus/fslmc: export qbman results in map file Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 08/20] net/dpaa2: add support for congestion notification Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 09/20] net/dpaa2: add support for tail drop on queue Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 10/20] bus/fslmc: update TAILQ usages in dpaa2 objects Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 11/20] net/dpaa2: add support for MAC address filtering Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 12/20] net/dpaa2: add support for multicast promiscuous mode Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 13/20] net/dpaa2: add support for VLAN filter and offload Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 14/20] net/dpaa2: add support for VLAN strip Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 15/20] net/dpaa2: add link status config support Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 16/20] net/dpaa2: add support for flow control Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 17/20] net/dpaa2: configure jumbo frames Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 18/20] bus/fslmc: add support to detect soc version Hemant Agrawal
2017-05-26  8:51         ` Ferruh Yigit
2017-05-26  9:26         ` [dpdk-dev] [PATCH] bus/fslmc: fix license information Shreyansh Jain
2017-05-26  9:22           ` Ferruh Yigit
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 19/20] net/dpaa2: add support for Firmware Version get Hemant Agrawal
2017-05-26  6:51       ` [dpdk-dev] [PATCH v4 20/20] bus/fslmc: reducing the debug log messages Hemant Agrawal
2017-05-26  8:47       ` [dpdk-dev] [PATCH v4 00/20] NXP DPAA2 PMD functional enhancements Ferruh Yigit

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