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devlink: Expose number of port lanes 

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

Expose the attribute to user space as RO value, for example:

$devlink port show swp1
pci/0000:03:00.0/61: type eth netdev swp1 flavour physical port 1 lanes 1

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Danielle Ratson 2020-07-30 17:33:17 +03:00 committed by David Ahern
parent 41a9e38469
commit fcbc6c1c71
1 changed files with 5 additions and 0 deletions
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5
devlink/devlink.c
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@ -581,6 +581,7 @@ static const enum mnl_attr_data_type devlink_policy[DEVLINK_ATTR_MAX + 1] = {
[DEVLINK_ATTR_PORT_NETDEV_IFINDEX] = MNL_TYPE_U32,
[DEVLINK_ATTR_PORT_NETDEV_NAME] = MNL_TYPE_NUL_STRING,
[DEVLINK_ATTR_PORT_IBDEV_NAME] = MNL_TYPE_NUL_STRING,
[DEVLINK_ATTR_PORT_LANES] = MNL_TYPE_U32,
[DEVLINK_ATTR_SB_INDEX] = MNL_TYPE_U32,
[DEVLINK_ATTR_SB_SIZE] = MNL_TYPE_U32,
[DEVLINK_ATTR_SB_INGRESS_POOL_COUNT] = MNL_TYPE_U16,
@ -3423,6 +3424,10 @@ static void pr_out_port(struct dl *dl, struct nlattr **tb)
if (tb[DEVLINK_ATTR_PORT_SPLIT_GROUP])
print_uint(PRINT_ANY, "split_group", " split_group %u",
mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_SPLIT_GROUP]));
if (tb[DEVLINK_ATTR_PORT_LANES])
print_uint(PRINT_ANY, "lanes", " lanes %u",
mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_LANES]));
pr_out_port_function(dl, tb);
pr_out_port_handle_end(dl);
}