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From: "Min Hu (Connor)" <humin29@huawei.com>
To: <dev@dpdk.org>
Cc: <konstantin.ananyev@intel.com>, <thomas@monjalon.net>,
	<arybchenko@solarflare.com>, <ferruh.yigit@intel.com>,
	<linuxarm@huawei.com>
Subject: [dpdk-dev] [V5 2/3] net/hns3: support FEC
Date: Thu, 17 Sep 2020 16:52:09 +0800	[thread overview]
Message-ID: <1600332730-44952-3-git-send-email-humin29@huawei.com> (raw)
In-Reply-To: <1600332730-44952-1-git-send-email-humin29@huawei.com>

Forward error correction (FEC) is a bit error correction mode.
It adds error correction information to data packets at the
transmit end, and uses the error correction information to correct
the bit errors generated during data packet transmission at the
receive end. This improves signal quality but also brings a delay
to signals. This function can be enabled or disabled as required.

This patch adds FEC support for ethdev.Introduce ethdev
operations which support query and config FEC information in
hardware.

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Reviewed-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Reviewed-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Chengchang Tang <tangchengchang@huawei.com>
---
v4->v5:
Data type for fec_cap is changed from uint8_t
to uint32_t for possible future expansion.

---
v2->v3:
adjust the return value of function.

---
 drivers/net/hns3/hns3_cmd.h    |  19 ++++-
 drivers/net/hns3/hns3_ethdev.c | 157 +++++++++++++++++++++++++++++++++++++++++
 drivers/net/hns3/hns3_ethdev.h |   1 +
 3 files changed, 176 insertions(+), 1 deletion(-)

diff --git a/drivers/net/hns3/hns3_cmd.h b/drivers/net/hns3/hns3_cmd.h
index d70f42e..8b80353 100644
--- a/drivers/net/hns3/hns3_cmd.h
+++ b/drivers/net/hns3/hns3_cmd.h
@@ -99,6 +99,7 @@ enum hns3_opcode_type {
 	HNS3_OPC_CONFIG_MAX_FRM_SIZE    = 0x0308,
 	HNS3_OPC_CONFIG_SPEED_DUP       = 0x0309,
 	HNS3_MAC_COMMON_INT_EN          = 0x030E,
+	HNS3_OPC_CONFIG_FEC_MODE        = 0x031A,
 
 	/* PFC/Pause commands */
 	HNS3_OPC_CFG_MAC_PAUSE_EN       = 0x0701,
@@ -653,9 +654,25 @@ struct hns3_config_auto_neg_cmd {
 	uint8_t   rsv[20];
 };
 
+#define HNS3_MAC_CFG_FEC_AUTO_EN_B	0
+#define HNS3_MAC_CFG_FEC_MODE_S		1
+#define HNS3_MAC_CFG_FEC_MODE_M	GENMASK(3, 1)
+#define HNS3_MAC_FEC_OFF		0
+#define HNS3_MAC_FEC_BASER		1
+#define HNS3_MAC_FEC_RS			2
+
 struct hns3_sfp_speed_cmd {
 	uint32_t  sfp_speed;
-	uint32_t  rsv[5];
+	uint8_t   query_type; /* 0: sfp speed, 1: active fec */
+	uint8_t   active_fec; /* current FEC mode */
+	uint16_t  rsv1;
+	uint32_t  rsv2[4];
+};
+
+/* Configure FEC mode, opcode:0x031A */
+struct hns3_config_fec_cmd {
+	uint8_t fec_mode;
+	uint8_t rsv[23];
 };
 
 #define HNS3_MAC_MGR_MASK_VLAN_B		BIT(0)
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 81e7730..abe01e1 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -78,6 +78,8 @@ static int hns3_add_mc_addr(struct hns3_hw *hw,
 			    struct rte_ether_addr *mac_addr);
 static int hns3_remove_mc_addr(struct hns3_hw *hw,
 			    struct rte_ether_addr *mac_addr);
+static int hns3_restore_fec(struct hns3_hw *hw);
+static int hns3_query_dev_fec_info(struct rte_eth_dev *dev);
 
 static void
 hns3_pf_disable_irq0(struct hns3_hw *hw)
@@ -2819,6 +2821,13 @@ hns3_get_capability(struct hns3_hw *hw)
 	    device_id == HNS3_DEV_ID_200G_RDMA)
 		hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_DCB_B, 1);
 
+	ret = hns3_query_dev_fec_info(eth_dev);
+	if (ret) {
+		PMD_INIT_LOG(ERR,
+			     "failed to query FEC information, ret = %d", ret);
+		return ret;
+	}
+
 	/* Get PCI revision id */
 	ret = rte_pci_read_config(pci_dev, &revision, HNS3_PCI_REVISION_ID_LEN,
 				  HNS3_PCI_REVISION_ID);
@@ -5311,6 +5320,10 @@ hns3_restore_conf(struct hns3_adapter *hns)
 	if (ret)
 		goto err_promisc;
 
+	ret = hns3_restore_fec(hw);
+	if (ret)
+		goto err_promisc;
+
 	if (hns->hw.adapter_state == HNS3_NIC_STARTED) {
 		ret = hns3_do_start(hns, false);
 		if (ret)
@@ -5389,6 +5402,147 @@ hns3_reset_service(void *param)
 		hns3_msix_process(hns, reset_level);
 }
 
+static int
+hns3_fec_get_capability(struct rte_eth_dev *dev, uint32_t *fec_cap)
+{
+	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct hns3_mac *mac = &hw->mac;
+	uint32_t mode;
+
+	switch (mac->link_speed) {
+	case ETH_SPEED_NUM_10G:
+	case ETH_SPEED_NUM_40G:
+		mode = RTE_ETH_FEC_CAPA_NOFEC | RTE_ETH_FEC_CAPA_BASER |
+			RTE_ETH_FEC_CAPA_AUTO;
+		break;
+	case ETH_SPEED_NUM_25G:
+	case ETH_SPEED_NUM_50G:
+		mode = RTE_ETH_FEC_CAPA_NOFEC | RTE_ETH_FEC_CAPA_BASER |
+			RTE_ETH_FEC_CAPA_RS | RTE_ETH_FEC_CAPA_AUTO;
+		break;
+	case ETH_SPEED_NUM_100G:
+	case ETH_SPEED_NUM_200G:
+		mode = RTE_ETH_FEC_CAPA_NOFEC | RTE_ETH_FEC_CAPA_RS |
+			RTE_ETH_FEC_CAPA_AUTO;
+		break;
+	default:
+		mode = 0;
+		break;
+	}
+
+	*fec_cap = mode;
+	return 0;
+}
+
+static int
+hns3_fec_get(struct rte_eth_dev *dev, enum rte_fec_mode *mode)
+{
+#define QUERY_ACTIVE_SPEED	1
+	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct hns3_sfp_speed_cmd *resp;
+	struct hns3_cmd_desc desc;
+	int ret;
+
+	hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_SFP_GET_SPEED, true);
+	resp = (struct hns3_sfp_speed_cmd *)desc.data;
+	resp->query_type = QUERY_ACTIVE_SPEED;
+
+	ret = hns3_cmd_send(hw, &desc, 1);
+	if (ret == -EOPNOTSUPP) {
+		hns3_err(hw, "IMP do not support get FEC, ret = %d", ret);
+		return ret;
+	} else if (ret) {
+		hns3_err(hw, "get FEC failed, ret = %d", ret);
+		return ret;
+	}
+
+	*mode = resp->active_fec;
+	return 0;
+}
+
+static int
+hns3_set_fec_hw(struct hns3_hw *hw, enum rte_fec_mode mode)
+{
+	struct hns3_config_fec_cmd *req;
+	struct hns3_cmd_desc desc;
+	int ret;
+
+	hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_CONFIG_FEC_MODE, false);
+
+	req = (struct hns3_config_fec_cmd *)desc.data;
+	switch (mode) {
+	case RTE_ETH_FEC_NOFEC:
+		hns3_set_field(req->fec_mode, HNS3_MAC_CFG_FEC_MODE_M,
+				HNS3_MAC_CFG_FEC_MODE_S, HNS3_MAC_FEC_OFF);
+		break;
+	case RTE_ETH_FEC_BASER:
+		hns3_set_field(req->fec_mode, HNS3_MAC_CFG_FEC_MODE_M,
+				HNS3_MAC_CFG_FEC_MODE_S, HNS3_MAC_FEC_BASER);
+		break;
+	case RTE_ETH_FEC_RS:
+		hns3_set_field(req->fec_mode, HNS3_MAC_CFG_FEC_MODE_M,
+				HNS3_MAC_CFG_FEC_MODE_S, HNS3_MAC_FEC_RS);
+		break;
+	case RTE_ETH_FEC_AUTO:
+		hns3_set_bit(req->fec_mode, HNS3_MAC_CFG_FEC_AUTO_EN_B, 1);
+		break;
+	default:
+		return 0;
+	}
+	ret = hns3_cmd_send(hw, &desc, 1);
+	if (ret)
+		hns3_err(hw, "set fec mode failed, ret = %d", ret);
+
+	return ret;
+}
+
+static int
+hns3_fec_set(struct rte_eth_dev *dev, enum rte_fec_mode mode)
+{
+	struct hns3_adapter *hns = dev->data->dev_private;
+	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(hns);
+	struct hns3_pf *pf = &hns->pf;
+	int ret;
+
+	ret = hns3_set_fec_hw(hw, mode);
+	if (ret)
+		return ret;
+
+	pf->fec_mode = mode;
+	return 0;
+}
+
+static int
+hns3_restore_fec(struct hns3_hw *hw)
+{
+	struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
+	struct hns3_pf *pf = &hns->pf;
+	enum rte_fec_mode mode = pf->fec_mode;
+	int ret;
+
+	ret = hns3_set_fec_hw(hw, mode);
+	if (ret)
+		hns3_err(hw, "restore fec mode(%d) failed, ret = %d",
+			 mode, ret);
+
+	return ret;
+}
+
+static int
+hns3_query_dev_fec_info(struct rte_eth_dev *dev)
+{
+	struct hns3_adapter *hns = dev->data->dev_private;
+	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(hns);
+	struct hns3_pf *pf = &hns->pf;
+	int ret;
+
+	ret = hns3_fec_get(dev, &pf->fec_mode);
+	if (ret)
+		hns3_err(hw, "query device FEC info failed, ret = %d", ret);
+
+	return ret;
+}
+
 static const struct eth_dev_ops hns3_eth_dev_ops = {
 	.dev_start          = hns3_dev_start,
 	.dev_stop           = hns3_dev_stop,
@@ -5434,6 +5588,9 @@ static const struct eth_dev_ops hns3_eth_dev_ops = {
 	.get_reg                = hns3_get_regs,
 	.get_dcb_info           = hns3_get_dcb_info,
 	.dev_supported_ptypes_get = hns3_dev_supported_ptypes_get,
+	.fec_get_capability     = hns3_fec_get_capability,
+	.fec_get                = hns3_fec_get,
+	.fec_set                = hns3_fec_set,
 };
 
 static const struct hns3_reset_ops hns3_reset_ops = {
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 0e665e5..daf723e 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -510,6 +510,7 @@ struct hns3_pf {
 	struct hns3_err_msix_intr_stats abn_int_stats;
 
 	bool support_sfp_query;
+	enum rte_fec_mode fec_mode; /* current FEC mode for ethdev */
 
 	struct hns3_vtag_cfg vtag_config;
 	LIST_HEAD(vlan_tbl, hns3_user_vlan_table) vlan_list;
-- 
2.7.4


  parent reply	other threads:[~2020-09-17  8:54 UTC|newest]

Thread overview: 118+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-28 11:32 [dpdk-dev] [RFC] ethdev: add Forward Error Correction support Min Hu(Connor)
2020-08-30 12:43 ` Andrew Rybchenko
2020-09-08  3:05 ` [dpdk-dev] [PATCH 0/3] add FEC support Min Hu (Connor)
2020-09-08  3:05   ` [dpdk-dev] [PATCH 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-09  2:42     ` [dpdk-dev] [PATCH V2 0/3] add FEC support Min Hu (Connor)
2020-09-09  2:42       ` [dpdk-dev] [PATCH V2 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-09  2:43       ` [dpdk-dev] [PATCH V2 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-09  2:43       ` [dpdk-dev] [PATCH V2 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-08  3:05   ` [dpdk-dev] [PATCH 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-08  3:05   ` [dpdk-dev] [PATCH 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-10  7:24   ` [dpdk-dev] [PATCH V4 0/3] add FEC support Min Hu (Connor)
2020-09-10  7:24     ` [dpdk-dev] [PATCH V4 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-12  4:53       ` Ajit Khaparde
2020-09-16 14:10       ` Ananyev, Konstantin
2020-09-10  7:24     ` [dpdk-dev] [PATCH V4 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-10  7:24     ` [dpdk-dev] [PATCH V4 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-10 21:02     ` [dpdk-dev] [PATCH V4 0/3] add FEC support Ajit Khaparde
2020-09-11  8:39       ` humin (Connor)
2020-09-16 12:37     ` humin (Connor)
2020-09-17  8:23   ` [dpdk-dev] [V5 " Min Hu (Connor)
2020-09-17  8:23     ` [dpdk-dev] [V5 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-17  8:23     ` [dpdk-dev] [V5 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-17  8:23     ` [dpdk-dev] [V5 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-17  8:52   ` [dpdk-dev] [V5 0/3] add FEC support Min Hu (Connor)
2020-09-17  8:52     ` [dpdk-dev] [V5 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-17  9:58       ` Andrew Rybchenko
2020-09-18  9:28         ` Min Hu (Connor)
2020-09-19  8:42           ` Andrew Rybchenko
2020-09-19 12:06             ` Min Hu (Connor)
2020-09-17 12:49       ` Ananyev, Konstantin
2020-09-18  1:57         ` humin (Connor)
2020-09-18 10:46           ` Ananyev, Konstantin
2020-09-17  8:52     ` Min Hu (Connor) [this message]
2020-09-17  8:52     ` [dpdk-dev] [V5 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-18  9:04   ` [dpdk-dev] [PATCH V6 0/3] add FEC support Min Hu (Connor)
2020-09-18  9:04     ` [dpdk-dev] [PATCH V6 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-18  9:04     ` [dpdk-dev] [PATCH V6 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-18  9:04     ` [dpdk-dev] [PATCH V6 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-18 11:48   ` [dpdk-dev] [PATCH V7 0/3] add FEC support Min Hu (Connor)
2020-09-18 11:48     ` [dpdk-dev] [PATCH V7 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-18 12:13       ` Ananyev, Konstantin
2020-09-18 18:10         ` Ajit Khaparde
2020-09-19  8:44           ` Andrew Rybchenko
2020-09-18 11:48     ` [dpdk-dev] [PATCH V7 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-18 11:48     ` [dpdk-dev] [PATCH V7 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-18 20:35       ` Ajit Khaparde
2020-09-21  2:59   ` [dpdk-dev] [PATCH V8 0/3] add FEC support Min Hu (Connor)
2020-09-21  2:59     ` [dpdk-dev] [PATCH V8 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-21  2:59     ` [dpdk-dev] [PATCH V8 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-21  2:59     ` [dpdk-dev] [PATCH V8 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-21  6:13   ` [dpdk-dev] [PATCH V9 0/3] add FEC support Min Hu (Connor)
2020-09-21  6:13     ` [dpdk-dev] [PATCH V9 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-21 13:39       ` Andrew Rybchenko
2020-09-22  4:58         ` Min Hu (Connor)
2020-09-22  8:02           ` Andrew Rybchenko
2020-09-22 11:06             ` Min Hu (Connor)
2020-09-22 12:18               ` Andrew Rybchenko
2020-09-24 11:07                 ` Min Hu (Connor)
2020-09-21  6:13     ` [dpdk-dev] [PATCH V9 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-21  6:13     ` [dpdk-dev] [PATCH V9 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-22  7:26   ` [dpdk-dev] [PATCH V10 0/3] add FEC support Min Hu (Connor)
2020-09-22  7:26     ` [dpdk-dev] [PATCH V10 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-22  7:26     ` [dpdk-dev] [PATCH V10 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-22  7:26     ` [dpdk-dev] [PATCH V10 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-24 11:01   ` [dpdk-dev] [PATCH V11 0/4] add FEC support Min Hu (Connor)
2020-09-24 11:01     ` [dpdk-dev] [PATCH V11 1/4] ethdev: introduce FEC API Min Hu (Connor)
2020-09-24 11:01     ` [dpdk-dev] [PATCH V11 2/4] net/hns3: support FEC Min Hu (Connor)
2020-09-24 11:01     ` [dpdk-dev] [PATCH V11 3/4] app/testpmd: add FEC command Min Hu (Connor)
2020-09-24 11:01     ` [dpdk-dev] [PATCH V11 4/4] doc: add FEC API and PMD information Min Hu (Connor)
2020-09-24 13:05   ` [dpdk-dev] [PATCH V12 0/4] add FEC support Min Hu (Connor)
2020-09-24 13:05     ` [dpdk-dev] [PATCH V12 1/4] ethdev: introduce FEC API Min Hu (Connor)
2020-09-24 14:46       ` Andrew Rybchenko
2020-09-25  8:47         ` Min Hu (Connor)
2020-09-25 15:36           ` Ajit Khaparde
2020-09-25 16:12             ` Stephen Hemminger
2020-09-25 16:38               ` Ferruh Yigit
2020-09-24 13:05     ` [dpdk-dev] [PATCH V12 2/4] net/hns3: support FEC Min Hu (Connor)
2020-09-24 13:05     ` [dpdk-dev] [PATCH V12 3/4] app/testpmd: add FEC command Min Hu (Connor)
2020-09-24 13:05     ` [dpdk-dev] [PATCH V12 4/4] doc: add FEC API and PMD information Min Hu (Connor)
2020-09-24 13:52       ` Andrew Rybchenko
2020-09-25  8:39   ` [dpdk-dev] [PATCH V13 0/3] add FEC support Min Hu (Connor)
2020-09-25  8:39     ` [dpdk-dev] [PATCH V13 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-28  7:35       ` Andrew Rybchenko
2020-09-28 11:13         ` Min Hu (Connor)
2020-09-25  8:39     ` [dpdk-dev] [PATCH V13 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-25  8:39     ` [dpdk-dev] [PATCH V13 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-27  7:08     ` [dpdk-dev] [PATCH V13 0/3] add FEC support Min Hu (Connor)
2020-09-28 10:27       ` Ferruh Yigit
2020-09-28 11:11         ` Min Hu (Connor)
2020-09-28 11:08   ` [dpdk-dev] [PATCH V14 " Min Hu (Connor)
2020-09-28 11:08     ` [dpdk-dev] [PATCH V14 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-28 12:48       ` Andrew Rybchenko
2020-09-29  2:09         ` Min Hu (Connor)
2020-09-28 11:08     ` [dpdk-dev] [PATCH V14 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-28 11:08     ` [dpdk-dev] [PATCH V14 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-29  1:03   ` [dpdk-dev] [PATCH V15 0/3] add FEC support Min Hu (Connor)
2020-09-29  1:03     ` [dpdk-dev] [PATCH V15 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-29  4:18       ` Ajit Khaparde
2020-09-29  8:44         ` Min Hu (Connor)
2020-09-30  2:45           ` Min Hu (Connor)
2020-09-30  8:15           ` Thomas Monjalon
2020-09-30  9:45       ` Andrew Rybchenko
2020-09-29  1:03     ` [dpdk-dev] [PATCH V15 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-29  1:03     ` [dpdk-dev] [PATCH V15 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-30 16:52       ` Ferruh Yigit
2020-10-07  0:15         ` humin (Q)
2020-10-07  9:28         ` Ferruh Yigit
2020-10-07 23:38           ` humin (Q)
2020-10-08 10:06           ` Min Hu (Connor)
2020-10-08 10:02   ` [dpdk-dev] [PATCH V16 0/3] add FEC support Min Hu (Connor)
2020-10-08 10:02     ` [dpdk-dev] [PATCH V16 1/3] ethdev: introduce FEC API Min Hu (Connor)
2021-01-15 14:07       ` Ferruh Yigit
2021-01-16  2:03         ` Min Hu (Connor)
2020-10-08 10:02     ` [dpdk-dev] [PATCH V16 2/3] net/hns3: support FEC Min Hu (Connor)
2020-10-08 10:02     ` [dpdk-dev] [PATCH V16 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-10-08 15:57       ` Ferruh Yigit
2020-10-09  3:48         ` Min Hu (Connor)
2020-10-08 16:28     ` [dpdk-dev] [PATCH V16 0/3] add FEC support Ferruh Yigit

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    --in-reply-to=1600332730-44952-3-git-send-email-humin29@huawei.com \
    --to=humin29@huawei.com \
    --cc=arybchenko@solarflare.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@intel.com \
    --cc=konstantin.ananyev@intel.com \
    --cc=linuxarm@huawei.com \
    --cc=thomas@monjalon.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

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