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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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4
net/core/devlink.c
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@@ -530,6 +530,10 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg,
if (!devlink_port->attrs_set)
return 0;
if (attrs->lanes) {
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
return -EMSGSIZE;
}
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
return -EMSGSIZE;
switch (devlink_port->attrs.flavour) {