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RDMA/netlink: Expose device and port capability masks

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The port capability mask is exposed to user space via sysfs interface,
while device capabilities are available for verbs only.

This patch provides those capabilities through netlink interface.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
This commit is contained in:
Leon Romanovsky 2017-06-20 14:47:08 +03:00 committed by Leon Romanovsky
parent c3f66f7b00
commit ac50525374
2 changed files with 24 additions and 0 deletions
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19
drivers/infiniband/core/nldev.c
View File

@ -50,18 +50,37 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device)))
return -EMSGSIZE;
BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64));
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
device->attrs.device_cap_flags, 0))
return -EMSGSIZE;
return 0;
}
static int fill_port_info(struct sk_buff *msg,
struct ib_device *device, u32 port)
{
struct ib_port_attr attr;
int ret;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index))
return -EMSGSIZE;
if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, device->name))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
return -EMSGSIZE;
ret = ib_query_port(device, port, &attr);
if (ret)
return ret;
BUILD_BUG_ON(sizeof(attr.port_cap_flags) > sizeof(u64));
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
(u64)attr.port_cap_flags, 0))
return -EMSGSIZE;
return 0;
}

5
include/uapi/rdma/rdma_netlink.h
View File

@ -257,6 +257,11 @@ enum rdma_nldev_attr {
*/
RDMA_NLDEV_ATTR_PORT_INDEX, /* u32 */
/*
* Device and port capabilities
*/
RDMA_NLDEV_ATTR_CAP_FLAGS, /* u64 */
RDMA_NLDEV_ATTR_MAX
};
#endif /* _UAPI_RDMA_NETLINK_H */