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From: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
To: dev@dpdk.org
Cc: shahafs@mellanox.com
Date: Thu, 21 Mar 2019 08:11:18 +0000
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Subject: [dpdk-dev] [PATCH 04/14] net/mlx5: add getting IB ports number for
multiport IB
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Message-ID: <20190321081118.ZnR6b10BNQivYVrnYKc-cpHQPA2Lcfd9kmYF2qFERzc@z>
There is the routine mlx5_nl_portnum() added to get
the number of ports of multiport Infiniband device.
It is assumed the Uplink/VF representors are attached
on this ports.
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
drivers/net/mlx5/mlx5.h | 1 +
drivers/net/mlx5/mlx5_nl.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 46 insertions(+)
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index f5e29ca..528ae02 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -470,6 +470,7 @@ int mlx5_nl_mac_addr_remove(struct rte_eth_dev *dev, struct ether_addr *mac,
void mlx5_nl_mac_addr_flush(struct rte_eth_dev *dev);
int mlx5_nl_promisc(struct rte_eth_dev *dev, int enable);
int mlx5_nl_allmulti(struct rte_eth_dev *dev, int enable);
+unsigned int mlx5_nl_portnum(int nl, const char *name);
unsigned int mlx5_nl_ifindex(int nl, const char *name, uint32_t pindex);
int mlx5_nl_switch_info(int nl, unsigned int ifindex,
struct mlx5_switch_info *info);
diff --git a/drivers/net/mlx5/mlx5_nl.c b/drivers/net/mlx5/mlx5_nl.c
index 6e9145a..81483b8 100644
--- a/drivers/net/mlx5/mlx5_nl.c
+++ b/drivers/net/mlx5/mlx5_nl.c
@@ -826,6 +826,51 @@ struct mlx5_nl_ifindex_data {
}
/**
+ * Get the number of physical ports of given IB device.
+ *
+ * @param nl
+ * Netlink socket of the RDMA kind (NETLINK_RDMA).
+ * @param[in] name
+ * IB device name.
+ *
+ * @return
+ * A valid (nonzero) number of ports on success, 0 otherwise
+ * and rte_errno is set.
+ */
+unsigned int
+mlx5_nl_portnum(int nl, const char *name)
+{
+ uint32_t seq = random();
+ struct mlx5_nl_ifindex_data data = {
+ .name = name,
+ .ibindex = 0,
+ .ifindex = 0,
+ .portnum = 0,
+ };
+ struct nlmsghdr req = {
+ .nlmsg_len = NLMSG_LENGTH(0),
+ .nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
+ RDMA_NLDEV_CMD_GET),
+ .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP,
+ };
+ int ret;
+
+ ret = mlx5_nl_send(nl, &req, seq);
+ if (ret < 0)
+ return 0;
+ ret = mlx5_nl_recv(nl, seq, mlx5_nl_cmdget_cb, &data);
+ if (ret < 0)
+ return 0;
+ if (!data.ibindex) {
+ rte_errno = ENODEV;
+ return 0;
+ }
+ if (!data.portnum)
+ rte_errno = EINVAL;
+ return data.portnum;
+}
+
+/**
* Process switch information from Netlink message.
*
* @param nh
--
1.8.3.1