Re: [PATCH net-next 1/6] bridge: uapi: Add neigh_forward_grat netlink attributes

Nikolay Aleksandrov <[email protected]> Mon, 4 May 2026 10:41:10 +0300

Newsgroups	dev.linux.lists.bridge,org.kernel.vger.linux-kernel,org.kernel.vger.linux-kselftest,org.kernel.vger.netdev
Message-ID	<[email protected]>

On 03/05/2026 10:35, Danielle Ratson wrote:
> Add netlink attributes for controlling gratuitous ARP and unsolicited NA
> forwarding when neighbor suppression is enabled.
> 
> Add IFLA_BRPORT_NEIGH_FORWARD_GRAT for port-level control and
> BRIDGE_VLANDB_ENTRY_NEIGH_FORWARD_GRAT for per-VLAN control.
> 
> The new attributes provide independent control of gratuitous ARP and
> unsolicited NA packets. Operators can enable forwarding for those packets
> for fast mobility across VTEPs while keeping general neighbor suppression
> active.
> 
> Signed-off-by: Danielle Ratson <[email protected]>
> Reviewed-by: Ido Schimmel <[email protected]>
> Reviewed-by: Petr Machata <[email protected]>
> ---
>   Documentation/netlink/specs/rt-link.yaml |  3 +++
>   include/uapi/linux/if_bridge.h           |  1 +
>   include/uapi/linux/if_link.h             | 17 +++++++++++++++++
>   net/core/rtnetlink.c                     |  2 +-
>   4 files changed, 22 insertions(+), 1 deletion(-)
> 

Acked-by: Nikolay Aleksandrov <[email protected]>