bridge: Add port-level netlink handling for neigh_forward_grat

Add netlink handlers for the port-level neigh_forward_grat option via
IFLA_BRPORT_NEIGH_FORWARD_GRAT attribute.

The default value of OFF preserves existing behavior, i.e. gratuitous ARP
and unsolicited NA are suppressed when neigh_suppress is enabled. Users can
explicitly set it to ON to allow these packets through.

Example for enabling control via 'bridge link' command:
 # bridge link set dev eth0 neigh_suppress on
 # bridge link set dev eth0 neigh_forward_grat on

Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260511065936.4173106-5-danieller@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

0 files changed, 0 insertions, 0 deletions