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RDMA/nldev: Provide netdevice name and index

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Export the net device name and index to easily find connection
between IB devices and relevant net devices.

We also updated the comment regarding the devices without FW.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2018-03-27 20:40:49 +03:00 committed by Jason Gunthorpe
parent 99dae69025
commit 5b2cc79de8
2 changed files with 39 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
drivers/infiniband/core/nldev.c
View file

@ -95,6 +95,9 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_NDEV_INDEX] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_NDEV_NAME] = { .type = NLA_NUL_STRING,
.len = IFNAMSIZ },
};
static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
@ -123,7 +126,7 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
return -EMSGSIZE;
ib_get_device_fw_str(device, fw);
/* Device without FW has strlen(fw) */
/* Device without FW has strlen(fw) = 0 */
if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw))
return -EMSGSIZE;
@ -139,8 +142,10 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
}
static int fill_port_info(struct sk_buff *msg,
struct ib_device *device, u32 port)
struct ib_device *device, u32 port,
const struct net *net)
{
struct net_device *netdev = NULL;
struct ib_port_attr attr;
int ret;
@ -174,7 +179,23 @@ static int fill_port_info(struct sk_buff *msg,
return -EMSGSIZE;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state))
return -EMSGSIZE;
return 0;
if (device->get_netdev)
netdev = device->get_netdev(device, port);
if (netdev && net_eq(dev_net(netdev), net)) {
ret = nla_put_u32(msg,
RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex);
if (ret)
goto out;
ret = nla_put_string(msg,
RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name);
}
out:
if (netdev)
dev_put(netdev);
return ret;
}
static int fill_res_info_entry(struct sk_buff *msg,
@ -603,7 +624,7 @@ static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
0, 0);
err = fill_port_info(msg, device, port);
err = fill_port_info(msg, device, port, sock_net(skb->sk));
if (err)
goto err_free;
@ -663,7 +684,7 @@ static int nldev_port_get_dumpit(struct sk_buff *skb,
RDMA_NLDEV_CMD_PORT_GET),
0, NLM_F_MULTI);
if (fill_port_info(skb, device, p)) {
if (fill_port_info(skb, device, p, sock_net(skb->sk))) {
nlmsg_cancel(skb, nlh);
goto out;
}

13
include/uapi/rdma/rdma_netlink.h
View file

@ -388,6 +388,19 @@ enum rdma_nldev_attr {
RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY, /* u32 */
RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY, /* u32 */
/*
* Provides logical name and index of netdevice which is
* connected to physical port. This information is relevant
* for RoCE and iWARP.
*
* The netdevices which are associated with containers are
* supposed to be exported together with GID table once it
* will be exposed through the netlink. Because the
* associated netdevices are properties of GIDs.
*/
RDMA_NLDEV_ATTR_NDEV_INDEX, /* u32 */
RDMA_NLDEV_ATTR_NDEV_NAME, /* string */
RDMA_NLDEV_ATTR_MAX
};
#endif /* _UAPI_RDMA_NETLINK_H */