On 2022-10-31 15:43, Ido Schimmel wrote:
On Sun, Oct 30, 2022 at 11:09:31PM +0100, [email protected] wrote:
On 2022-10-25 12:00, Ido Schimmel wrote:
> @@ -943,6 +946,14 @@ static int br_setport(struct net_bridge_port *p,
> struct nlattr *tb[],
>    br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
> BR_NEIGH_SUPPRESS);
>    br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
>    br_set_port_flag(p, tb, IFLA_BRPORT_LOCKED, BR_PORT_LOCKED);
> +  br_set_port_flag(p, tb, IFLA_BRPORT_MAB, BR_PORT_MAB);
> +
> +  if ((p->flags & BR_PORT_MAB) &&
> +      (!(p->flags & BR_PORT_LOCKED) || !(p->flags & BR_LEARNING))) {
> +          NL_SET_ERR_MSG(extack, "MAB can only be enabled on a locked port
> with learning enabled");

It's a bit odd to get this message when turning off learning on a port with
MAB on, e.g....

# bridge link set dev a2 learning off
Error: MAB can only be enabled on a locked port with learning enabled.

It's better if you suggest something else. How about:

"Bridge port must be locked and have learning enabled when MAB is enabled"

?

Yes, I think that is better in case it should not be split into more than one
message. At least it is not bound to a specific action.

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