On Fri, Mar 20, 2026 at 03:14:17PM +0100, David Marchand wrote:
> Re-enable debug logs unconditionally, this helps understanding why mac
> deletions were silently failing (while a bridge fdb del command was
> working fine).
>
> testpmd> mac_addr add 0 FA:35:44:3F:58:31
> testpmd> mac_addr remove 0 FA:35:44:3F:58:31
> mlx5_common: Interface 35 cannot remove MAC address FA:35:44:3F:58:31
> Operation not supported
>
> Then, fix mac deletion as the NLM_F_CREATE == 0x200 flag is relevant
> with a RTM_NEWNEIGH op.
>
> Since kernel v5.19 though, for a RTM_DELNEIGH op, 0x200 == NLM_F_BULK
> and passing this flag makes the deletion fail miserably for a single mac.
>
> Fixes: ccdcba53a3f4 ("net/mlx5: use Netlink to add/remove MAC addresses")
> Cc: [email protected]
>
> Signed-off-by: David Marchand <[email protected]>
Acked-by: Dariusz Sosnowski <[email protected]>
Best regards,
Dariusz Sosnowski
