[dpdk-dev] [PATCH v4 4/5] net/mlx5: add operations for secondary process

[Xueming Li <xuemingl@mellanox.com>]

Add operations that are safe for secondary processes:
* (x)stats
* device info get
* rx/tx descriptor status

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
---
 drivers/net/mlx5/mlx5.c        | 16 +++++++++++++++-
 drivers/net/mlx5/mlx5.h        |  1 +
 drivers/net/mlx5/mlx5_ethdev.c | 11 +++++------
 3 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 11490d4..64d9434 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -303,6 +303,18 @@ struct mlx5_args {
 	.rx_queue_intr_disable = mlx5_rx_intr_disable,
 };
 
+
+static const struct eth_dev_ops mlx5_dev_sec_ops = {
+	.stats_get = mlx5_stats_get,
+	.stats_reset = mlx5_stats_reset,
+	.xstats_get = mlx5_xstats_get,
+	.xstats_reset = mlx5_xstats_reset,
+	.xstats_get_names = mlx5_xstats_get_names,
+	.dev_infos_get = mlx5_dev_infos_get,
+	.rx_descriptor_status = mlx5_rx_descriptor_status,
+	.tx_descriptor_status = mlx5_tx_descriptor_status,
+};
+
 static struct {
 	struct rte_pci_addr pci_addr; /* associated PCI address */
 	uint32_t ports; /* physical ports bitfield. */
@@ -640,7 +652,7 @@ struct mlx5_args {
 				goto error;
 			}
 			eth_dev->device = &pci_dev->device;
-			eth_dev->dev_ops = NULL;
+			eth_dev->dev_ops = &mlx5_dev_sec_ops;
 			priv = eth_dev->data->dev_private;
 			/* Receive command fd from primary process */
 			err = priv_socket_connect(priv);
@@ -707,6 +719,8 @@ struct mlx5_args {
 		}
 
 		priv->ctx = ctx;
+		strncpy(priv->ibdev_path, priv->ctx->device->ibdev_path,
+			sizeof(priv->ibdev_path));
 		priv->device_attr = device_attr;
 		priv->port = port;
 		priv->pd = pd;
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 1ce02e8..928aeb6 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -91,6 +91,7 @@ struct priv {
 	struct ibv_context *ctx; /* Verbs context. */
 	struct ibv_device_attr_ex device_attr; /* Device properties. */
 	struct ibv_pd *pd; /* Protection Domain. */
+	char ibdev_path[IBV_SYSFS_PATH_MAX]; /* IB device path for secondary */
 	/*
 	 * MAC addresses array and configuration bit-field.
 	 * An extra entry that cannot be modified by the DPDK is reserved
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 46c3013..8f3ff89 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -165,7 +165,7 @@ struct priv *
 	char match[IF_NAMESIZE] = "";
 
 	{
-		MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
+		MKSTR(path, "%s/device/net", priv->ibdev_path);
 
 		dir = opendir(path);
 		if (dir == NULL)
@@ -183,7 +183,7 @@ struct priv *
 			continue;
 
 		MKSTR(path, "%s/device/net/%s/%s",
-		      priv->ctx->device->ibdev_path, name,
+		      priv->ibdev_path, name,
 		      (dev_type ? "dev_id" : "dev_port"));
 
 		file = fopen(path, "rb");
@@ -271,11 +271,11 @@ struct priv *
 
 	if (priv_is_ib_cntr(entry)) {
 		MKSTR(path, "%s/ports/1/hw_counters/%s",
-		      priv->ctx->device->ibdev_path, entry);
+		      priv->ibdev_path, entry);
 		file = fopen(path, "rb");
 	} else {
 		MKSTR(path, "%s/device/net/%s/%s",
-		      priv->ctx->device->ibdev_path, ifname, entry);
+		      priv->ibdev_path, ifname, entry);
 		file = fopen(path, "rb");
 	}
 	if (file == NULL)
@@ -318,8 +318,7 @@ struct priv *
 	if (priv_get_ifname(priv, &ifname))
 		return -1;
 
-	MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
-	      ifname, entry);
+	MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry);
 
 	file = fopen(path, "wb");
 	if (file == NULL)
-- 
1.8.3.1