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RDMA/netlink: Expose device and port capability masks 

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>
hifive-unleashed-5.1
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 */