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net/mlx5: add getting IB ports number for multiport IB

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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 these ports.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Shahaf Shuler <shahafs@mellanox.com>
This commit is contained in:
Viacheslav Ovsiienko 2019-03-27 13:15:37 +00:00 committed by Ferruh Yigit
parent e505508a38
commit bbfad6427b
2 changed files with 46 additions and 0 deletions
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1
drivers/net/mlx5/mlx5.h
View File

@ -422,6 +422,7 @@ void mlx5_nl_mac_addr_sync(struct rte_eth_dev *dev);
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);

45
drivers/net/mlx5/mlx5_nl.c
View File

@ -825,6 +825,51 @@ mlx5_nl_ifindex(int nl, const char *name, uint32_t pindex)
return 0;
}
/**
* 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.
*