Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ac505253 authored by Leon Romanovsky's avatar Leon Romanovsky
Browse files

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: default avatarLeon Romanovsky <leonro@mellanox.com>
Reviewed-by: default avatarSteve Wise <swise@opengridcomputing.com>
parent c3f66f7b

drivers/infiniband/core/nldev.c

+19 −0
Original line number Diff line number Diff line
@@ -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;

}

include/uapi/rdma/rdma_netlink.h

+5 −0
Original line number Diff line number Diff line
@@ -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 */