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From: "Wei Hu (Xavier)" <xavier.huwei@huawei.com>
To: <dev@dpdk.org>
Cc: <linuxarm@huawei.com>, <xavier_huwei@163.com>,
	<liudongdong3@huawei.com>,  <forest.zhouchang@huawei.com>
Subject: [dpdk-dev] [PATCH 21/22] net/hns3: add multiple process support for hns3 PMD driver
Date: Fri, 23 Aug 2019 21:47:10 +0800
Message-ID: <1566568031-45991-22-git-send-email-xavier.huwei@huawei.com> (raw)
In-Reply-To: <1566568031-45991-1-git-send-email-xavier.huwei@huawei.com>

This patch adds multiple process support for hns3 PMD driver.
Multi-process support selection queue by configuring RSS or
flow director. The primary process supports various management
ops, and the secondary process only supports queries ops.
The primary process notifies the secondary processes to start
or stop tranceiver.

Signed-off-by: Chunsong Feng <fengchunsong@huawei.com>
Signed-off-by: Min Wang (Jushui) <wangmin3@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Signed-off-by: Hao Chen <chenhao164@huawei.com>
Signed-off-by: Huisong Li <lihuisong@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.c    |  36 ++++++-
 drivers/net/hns3/hns3_ethdev_vf.c |  29 ++++-
 drivers/net/hns3/hns3_mp.c        | 219 ++++++++++++++++++++++++++++++++++++++
 drivers/net/hns3/hns3_mp.h        |  14 +++
 4 files changed, 296 insertions(+), 2 deletions(-)
 create mode 100644 drivers/net/hns3/hns3_mp.c
 create mode 100644 drivers/net/hns3/hns3_mp.h

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 9a4c560..28fa9a6 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -40,6 +40,7 @@
 #include "hns3_intr.h"
 #include "hns3_regs.h"
 #include "hns3_dcb.h"
+#include "hns3_mp.h"
 
 #define HNS3_DEFAULT_PORT_CONF_BURST_SIZE	32
 #define HNS3_DEFAULT_PORT_CONF_QUEUES_NUM	1
@@ -4078,6 +4079,10 @@ hns3_dev_stop(struct rte_eth_dev *eth_dev)
 	hw->adapter_state = HNS3_NIC_STOPPING;
 	hns3_set_rxtx_function(eth_dev);
 	rte_wmb();
+	/* Disable datapath on secondary process. */
+	hns3_mp_req_stop_rxtx(eth_dev);
+	/* Prevent crashes when queues are still in use. */
+	rte_delay_ms(hw->tqps_num);
 
 	rte_spinlock_lock(&hw->lock);
 	if (rte_atomic16_read(&hw->reset.resetting) == 0) {
@@ -4108,6 +4113,7 @@ hns3_dev_close(struct rte_eth_dev *eth_dev)
 	hns3_uninit_pf(eth_dev);
 	hns3_free_all_queues(eth_dev);
 	rte_free(hw->reset.wait_data);
+	hns3_mp_uninit_primary();
 	hns3_warn(hw, "Close port %d finished", hw->data->port_id);
 }
 
@@ -4750,6 +4756,28 @@ static const struct eth_dev_ops hns3_eth_dev_ops = {
 	.dev_supported_ptypes_get = hns3_dev_supported_ptypes_get,
 };
 
+static const struct eth_dev_ops hns3_eth_dev_secondary_ops = {
+	.stats_get          = hns3_stats_get,
+	.stats_reset        = hns3_stats_reset,
+	.xstats_get         = hns3_dev_xstats_get,
+	.xstats_get_names   = hns3_dev_xstats_get_names,
+	.xstats_reset       = hns3_dev_xstats_reset,
+	.xstats_get_by_id   = hns3_dev_xstats_get_by_id,
+	.xstats_get_names_by_id = hns3_dev_xstats_get_names_by_id,
+	.dev_infos_get          = hns3_dev_infos_get,
+	.fw_version_get         = hns3_fw_version_get,
+	.flow_ctrl_get          = hns3_flow_ctrl_get,
+	.link_update            = hns3_dev_link_update,
+	.rss_hash_update        = hns3_dev_rss_hash_update,
+	.rss_hash_conf_get      = hns3_dev_rss_hash_conf_get,
+	.reta_update            = hns3_dev_rss_reta_update,
+	.reta_query             = hns3_dev_rss_reta_query,
+	.filter_ctrl            = hns3_dev_filter_ctrl,
+	.get_reg                = hns3_get_regs,
+	.get_dcb_info           = hns3_get_dcb_info,
+	.dev_supported_ptypes_get = hns3_dev_supported_ptypes_get,
+};
+
 static const struct hns3_reset_ops hns3_reset_ops = {
 	.reset_service       = hns3_reset_service,
 	.stop_service        = hns3_stop_service,
@@ -4783,10 +4811,16 @@ hns3_dev_init(struct rte_eth_dev *eth_dev)
 	hns3_filterlist_init(eth_dev);
 
 	hns3_set_rxtx_function(eth_dev);
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
+		eth_dev->dev_ops = &hns3_eth_dev_secondary_ops;
+		hns3_mp_init_secondary();
+		hw->secondary_cnt++;
 		return 0;
+	}
 
 	eth_dev->dev_ops = &hns3_eth_dev_ops;
+	hns3_mp_init_primary();
+	hw->adapter_state = HNS3_NIC_UNINITIALIZED;
 	rte_eth_copy_pci_info(eth_dev, pci_dev);
 
 	if (device_id == HNS3_DEV_ID_25GE_RDMA ||
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 45360c4..1d33779 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -40,6 +40,7 @@
 #include "hns3_regs.h"
 #include "hns3_intr.h"
 #include "hns3_dcb.h"
+#include "hns3_mp.h"
 
 #define HNS3VF_KEEP_ALIVE_INTERVAL	2000000 /* us */
 #define HNS3VF_SERVICE_INTERVAL		1000000 /* us */
@@ -1174,6 +1175,7 @@ hns3vf_dev_close(struct rte_eth_dev *eth_dev)
 	hns3vf_uninit_vf(eth_dev);
 	hns3_free_all_queues(eth_dev);
 	rte_free(hw->reset.wait_data);
+	hns3_mp_uninit_primary();
 	hns3_warn(hw, "Close port %d finished", hw->data->port_id);
 }
 
@@ -1251,6 +1253,7 @@ hns3vf_dev_start(struct rte_eth_dev *eth_dev)
 	hw->adapter_state = HNS3_NIC_STARTED;
 	rte_spinlock_unlock(&hw->lock);
 	hns3_set_rxtx_function(eth_dev);
+	hns3_mp_req_start_rxtx(eth_dev);
 	return 0;
 }
 
@@ -1556,6 +1559,25 @@ static const struct eth_dev_ops hns3vf_eth_dev_ops = {
 	.dev_supported_ptypes_get = hns3_dev_supported_ptypes_get,
 };
 
+static const struct eth_dev_ops hns3vf_eth_dev_secondary_ops = {
+	.stats_get          = hns3_stats_get,
+	.stats_reset        = hns3_stats_reset,
+	.xstats_get         = hns3_dev_xstats_get,
+	.xstats_get_names   = hns3_dev_xstats_get_names,
+	.xstats_reset	    = hns3_dev_xstats_reset,
+	.xstats_get_by_id   = hns3_dev_xstats_get_by_id,
+	.xstats_get_names_by_id = hns3_dev_xstats_get_names_by_id,
+	.dev_infos_get      = hns3vf_dev_infos_get,
+	.link_update        = hns3vf_dev_link_update,
+	.rss_hash_update    = hns3_dev_rss_hash_update,
+	.rss_hash_conf_get  = hns3_dev_rss_hash_conf_get,
+	.reta_update        = hns3_dev_rss_reta_update,
+	.reta_query         = hns3_dev_rss_reta_query,
+	.filter_ctrl        = hns3_dev_filter_ctrl,
+	.get_reg            = hns3_get_regs,
+	.dev_supported_ptypes_get = hns3_dev_supported_ptypes_get,
+};
+
 static const struct hns3_reset_ops hns3vf_reset_ops = {
 	.reset_service       = hns3vf_reset_service,
 	.stop_service        = hns3vf_stop_service,
@@ -1589,10 +1611,15 @@ hns3vf_dev_init(struct rte_eth_dev *eth_dev)
 	hns3_filterlist_init(eth_dev);
 
 	hns3_set_rxtx_function(eth_dev);
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
+		eth_dev->dev_ops = &hns3vf_eth_dev_secondary_ops;
+		hns3_mp_init_secondary();
+		hw->secondary_cnt++;
 		return 0;
+	}
 
 	eth_dev->dev_ops = &hns3vf_eth_dev_ops;
+	hns3_mp_init_primary();
 
 	hw->adapter_state = HNS3_NIC_UNINITIALIZED;
 	rte_eth_copy_pci_info(eth_dev, pci_dev);
diff --git a/drivers/net/hns3/hns3_mp.c b/drivers/net/hns3/hns3_mp.c
new file mode 100644
index 0000000..2f56d8b
--- /dev/null
+++ b/drivers/net/hns3/hns3_mp.c
@@ -0,0 +1,219 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018-2019 Hisilicon Limited.
+ */
+
+#include <stdbool.h>
+
+#include <rte_eal.h>
+#include <rte_ethdev_driver.h>
+#include <rte_string_fns.h>
+#include <rte_io.h>
+
+#include "hns3_cmd.h"
+#include "hns3_mbx.h"
+#include "hns3_rss.h"
+#include "hns3_fdir.h"
+#include "hns3_stats.h"
+#include "hns3_ethdev.h"
+#include "hns3_logs.h"
+#include "hns3_rxtx.h"
+#include "hns3_mp.h"
+
+/*
+ * Initialize IPC message.
+ *
+ * @param[in] dev
+ *   Pointer to Ethernet structure.
+ * @param[out] msg
+ *   Pointer to message to fill in.
+ * @param[in] type
+ *   Message type.
+ */
+static inline void
+mp_init_msg(struct rte_eth_dev *dev, struct rte_mp_msg *msg,
+	    enum hns3_mp_req_type type)
+{
+	struct hns3_mp_param *param = (struct hns3_mp_param *)msg->param;
+
+	memset(msg, 0, sizeof(*msg));
+	strlcpy(msg->name, HNS3_MP_NAME, sizeof(msg->name));
+	msg->len_param = sizeof(*param);
+	param->type = type;
+	param->port_id = dev->data->port_id;
+}
+
+/*
+ * IPC message handler of primary process.
+ *
+ * @param[in] dev
+ *   Pointer to Ethernet structure.
+ * @param[in] peer
+ *   Pointer to the peer socket path.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mp_primary_handle(const struct rte_mp_msg *mp_msg __rte_unused,
+		  const void *peer __rte_unused)
+{
+	return 0;
+}
+
+/*
+ * IPC message handler of a secondary process.
+ *
+ * @param[in] dev
+ *   Pointer to Ethernet structure.
+ * @param[in] peer
+ *   Pointer to the peer socket path.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mp_secondary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
+{
+	struct rte_mp_msg mp_res;
+	struct hns3_mp_param *res = (struct hns3_mp_param *)mp_res.param;
+	const struct hns3_mp_param *param =
+		(const struct hns3_mp_param *)mp_msg->param;
+	struct rte_eth_dev *dev;
+	int ret;
+
+	if (!rte_eth_dev_is_valid_port(param->port_id)) {
+		rte_errno = ENODEV;
+		PMD_INIT_LOG(ERR, "port %u invalid port ID", param->port_id);
+		return -rte_errno;
+	}
+	dev = &rte_eth_devices[param->port_id];
+	switch (param->type) {
+	case HNS3_MP_REQ_START_RXTX:
+		PMD_INIT_LOG(INFO, "port %u starting datapath",
+			     dev->data->port_id);
+		rte_mb();
+		hns3_set_rxtx_function(dev);
+		mp_init_msg(dev, &mp_res, param->type);
+		res->result = 0;
+		ret = rte_mp_reply(&mp_res, peer);
+		break;
+	case HNS3_MP_REQ_STOP_RXTX:
+		PMD_INIT_LOG(INFO, "port %u stopping datapath",
+			     dev->data->port_id);
+		hns3_set_rxtx_function(dev);
+		rte_mb();
+		mp_init_msg(dev, &mp_res, param->type);
+		res->result = 0;
+		ret = rte_mp_reply(&mp_res, peer);
+		break;
+	default:
+		rte_errno = EINVAL;
+		PMD_INIT_LOG(ERR, "port %u invalid mp request type",
+			     dev->data->port_id);
+		return -rte_errno;
+	}
+	return ret;
+}
+
+/*
+ * Broadcast request of stopping/starting data-path to secondary processes.
+ *
+ * @param[in] dev
+ *   Pointer to Ethernet structure.
+ * @param[in] type
+ *   Request type.
+ */
+static void
+mp_req_on_rxtx(struct rte_eth_dev *dev, enum hns3_mp_req_type type)
+{
+	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct rte_mp_msg mp_req;
+	struct rte_mp_msg *mp_res;
+	struct rte_mp_reply mp_rep;
+	struct hns3_mp_param *res;
+	struct timespec ts;
+	int ret;
+	int i;
+
+	if (!hw->secondary_cnt)
+		return;
+	if (type != HNS3_MP_REQ_START_RXTX && type != HNS3_MP_REQ_STOP_RXTX) {
+		hns3_err(hw, "port %u unknown request (req_type %d)",
+			 dev->data->port_id, type);
+		return;
+	}
+	mp_init_msg(dev, &mp_req, type);
+	ts.tv_sec = HNS3_MP_REQ_TIMEOUT_SEC;
+	ts.tv_nsec = 0;
+	ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
+	if (ret) {
+		hns3_err(hw, "port %u failed to request stop/start Rx/Tx (%d)",
+			 dev->data->port_id, type);
+		goto exit;
+	}
+	if (mp_rep.nb_sent != mp_rep.nb_received) {
+		PMD_INIT_LOG(ERR,
+			"port %u not all secondaries responded (req_type %d)",
+			dev->data->port_id, type);
+		goto exit;
+	}
+	for (i = 0; i < mp_rep.nb_received; i++) {
+		mp_res = &mp_rep.msgs[i];
+		res = (struct hns3_mp_param *)mp_res->param;
+		if (res->result) {
+			hns3_err(hw, "port %u request failed on secondary #%d",
+				 dev->data->port_id, i);
+			goto exit;
+		}
+	}
+exit:
+	free(mp_rep.msgs);
+}
+
+/*
+ * Broadcast request of starting data-path to secondary processes. The request
+ * is synchronous.
+ *
+ * @param[in] dev
+ *   Pointer to Ethernet structure.
+ */
+void hns3_mp_req_start_rxtx(struct rte_eth_dev *dev)
+{
+	mp_req_on_rxtx(dev, HNS3_MP_REQ_START_RXTX);
+}
+
+/*
+ * Broadcast request of stopping data-path to secondary processes. The request
+ * is synchronous.
+ *
+ * @param[in] dev
+ *   Pointer to Ethernet structure.
+ */
+void hns3_mp_req_stop_rxtx(struct rte_eth_dev *dev)
+{
+	mp_req_on_rxtx(dev, HNS3_MP_REQ_STOP_RXTX);
+}
+
+/*
+ * Initialize by primary process.
+ */
+void hns3_mp_init_primary(void)
+{
+	rte_mp_action_register(HNS3_MP_NAME, mp_primary_handle);
+}
+
+/*
+ * Un-initialize by primary process.
+ */
+void hns3_mp_uninit_primary(void)
+{
+	rte_mp_action_unregister(HNS3_MP_NAME);
+}
+
+/*
+ * Initialize by secondary process.
+ */
+void hns3_mp_init_secondary(void)
+{
+	rte_mp_action_register(HNS3_MP_NAME, mp_secondary_handle);
+}
diff --git a/drivers/net/hns3/hns3_mp.h b/drivers/net/hns3/hns3_mp.h
new file mode 100644
index 0000000..aefbeb1
--- /dev/null
+++ b/drivers/net/hns3/hns3_mp.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018-2019 Hisilicon Limited.
+ */
+
+#ifndef _HNS3_MP_H_
+#define _HNS3_MP_H_
+
+void hns3_mp_req_start_rxtx(struct rte_eth_dev *dev);
+void hns3_mp_req_stop_rxtx(struct rte_eth_dev *dev);
+void hns3_mp_init_primary(void);
+void hns3_mp_uninit_primary(void);
+void hns3_mp_init_secondary(void);
+
+#endif /* _HNS3_MP_H_ */
-- 
2.7.4


  parent reply index

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23 13:46 [dpdk-dev] [PATCH 00/22] add hns3 ethernet " Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 01/22] net/hns3: add hardware registers definition Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 02/22] net/hns3: add some definitions for data structure and macro Wei Hu (Xavier)
2019-08-30  8:25   ` Gavin Hu (Arm Technology China)
2019-09-05  6:01     ` Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 03/22] net/hns3: register hns3 PMD driver Wei Hu (Xavier)
2019-08-30 15:01   ` Ferruh Yigit
2019-09-06  6:20     ` Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 04/22] net/hns3: add support for cmd of " Wei Hu (Xavier)
2019-08-30 15:02   ` Ferruh Yigit
2019-09-06  6:49     ` Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 05/22] net/hns3: add the initialization " Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 06/22] net/hns3: add support for MAC address related operations Wei Hu (Xavier)
2019-08-30 15:03   ` Ferruh Yigit
2019-09-05  5:40     ` Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 07/22] net/hns3: add support for some misc operations Wei Hu (Xavier)
2019-08-30 15:04   ` Ferruh Yigit
2019-08-23 13:46 ` [dpdk-dev] [PATCH 08/22] net/hns3: add support for link update operation Wei Hu (Xavier)
2019-08-30 15:04   ` Ferruh Yigit
2019-09-06  6:56     ` Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 09/22] net/hns3: add support for flow directory of hns3 PMD driver Wei Hu (Xavier)
2019-08-30 15:06   ` Ferruh Yigit
2019-09-06  8:23     ` Wei Hu (Xavier)
2019-09-06 11:08     ` Wei Hu (Xavier)
2019-08-23 13:46 ` [dpdk-dev] [PATCH 10/22] net/hns3: add support for RSS " Wei Hu (Xavier)
2019-08-30 15:07   ` Ferruh Yigit
2019-08-31  9:16     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 11/22] net/hns3: add support for flow control " Wei Hu (Xavier)
2019-08-30 15:07   ` Ferruh Yigit
2019-08-31  8:04     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 12/22] net/hns3: add support for VLAN " Wei Hu (Xavier)
2019-08-30 15:08   ` Ferruh Yigit
2019-08-31  9:04     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 13/22] net/hns3: add support for mailbox " Wei Hu (Xavier)
2019-08-30 15:08   ` Ferruh Yigit
2019-09-06 11:25     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 14/22] net/hns3: add support for hns3 VF " Wei Hu (Xavier)
2019-08-30 15:11   ` Ferruh Yigit
2019-08-31  9:03     ` Wei Hu (Xavier)
2019-09-06 11:27     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 15/22] net/hns3: add package and queue related operation Wei Hu (Xavier)
2019-08-23 15:42   ` Aaron Conole
2019-08-30 15:13   ` Ferruh Yigit
2019-09-11 11:40     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 16/22] net/hns3: add start stop configure promiscuous ops Wei Hu (Xavier)
2019-08-30 15:14   ` Ferruh Yigit
2019-09-06 11:51     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 17/22] net/hns3: add dump register ops for hns3 PMD driver Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 18/22] net/hns3: add abnormal interrupt process " Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 19/22] net/hns3: add stats related ops " Wei Hu (Xavier)
2019-08-30 15:20   ` Ferruh Yigit
2019-08-31  8:49     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 20/22] net/hns3: add reset related process " Wei Hu (Xavier)
2019-08-23 13:47 ` Wei Hu (Xavier) [this message]
2019-08-30 15:14   ` [dpdk-dev] [PATCH 21/22] net/hns3: add multiple process support " Ferruh Yigit
2019-09-02 13:41     ` Wei Hu (Xavier)
2019-08-23 13:47 ` [dpdk-dev] [PATCH 22/22] net/hns3: add hns3 build files Wei Hu (Xavier)
2019-08-23 14:08   ` Jerin Jacob Kollanukkaran
2019-08-30  3:22     ` Wei Hu (Xavier)
2019-08-31  2:10       ` Wei Hu (Xavier)
2019-08-30 14:57     ` Ferruh Yigit
2019-08-30  6:16   ` Stephen Hemminger
2019-08-31  8:46     ` Wei Hu (Xavier)
2019-08-30  6:17   ` Stephen Hemminger
2019-08-31  8:44     ` Wei Hu (Xavier)
2019-09-03 15:27     ` Ye Xiaolong
2019-09-11 11:36       ` Wei Hu (Xavier)
2019-08-30 14:58   ` Ferruh Yigit
2019-09-10 11:43     ` Wei Hu (Xavier)
2019-08-30 15:00   ` Ferruh Yigit
2019-08-31  8:07     ` Wei Hu (Xavier)
2019-08-30 15:12   ` Ferruh Yigit
2019-08-31  8:07     ` Wei Hu (Xavier)
2019-08-30 15:23 ` [dpdk-dev] [PATCH 00/22] add hns3 ethernet PMD driver Ferruh Yigit
2019-08-31  8:06   ` Wei Hu (Xavier)

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