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devlink: Add a new devlink port lanes attribute and pass to netlink

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Add a new devlink port attribute that indicates the port's number of lanes.

Drivers are expected to set it via devlink_port_attrs_set(), before
registering the port.

The attribute is not passed to user space in case the number of lanes is
invalid (0).

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Danielle Ratson 2020-07-09 16:18:18 +03:00 • committed by David S. Miller
parent 622d3e9201
commit a21cf0a833
4 changed files with 9 additions and 0 deletions
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2
include/uapi/linux/devlink.h
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@ -455,6 +455,8 @@ enum devlink_attr {
DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER, /* string */
DEVLINK_ATTR_PORT_LANES, /* u32 */
/* add new attributes above here, update the policy in devlink.c */
__DEVLINK_ATTR_MAX,