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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Roopa Prabhu , Simon Horman , linux-kernel@vger.kernel.org, bridge@lists.linux.dev References: <20250403234412.1531714-1-Joseph.Huang@garmin.com> <20250403234412.1531714-4-Joseph.Huang@garmin.com> <36c7286d-b410-4695-b069-f79605feade4@blackwall.org> <917d4124-c389-4623-836d-357150b45240@gmail.com> Content-Language: en-US From: Joseph Huang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 4/4/2025 4:04 PM, Nikolay Aleksandrov wrote: > On 4/4/25 18:25, Joseph Huang wrote: >> On 4/4/2025 6:29 AM, Nikolay Aleksandrov wrote: >>> On 4/4/25 02:44, Joseph Huang wrote: >>>> Notify user space on mdb offload failure if mdb_offload_fail_notification >>>> is set. >>>> >>>> Signed-off-by: Joseph Huang >>>> --- >>>>   net/bridge/br_mdb.c       | 26 +++++++++++++++++++++----- >>>>   net/bridge/br_private.h   |  9 +++++++++ >>>>   net/bridge/br_switchdev.c |  4 ++++ >>>>   3 files changed, 34 insertions(+), 5 deletions(-) >>>> >>> >>> The patch looks good, but one question - it seems we'll mark mdb entries with >>> "offload failed" when we get -EOPNOTSUPP as an error as well. Is that intended? >>> >>> That is, if the option is enabled and we have mixed bridge ports, we'll mark mdbs >>> to the non-switch ports as offload failed, but it is not due to a switch offload >>> error. >> >> Good catch. No, that was not intended. >> >> What if we short-circuit and just return like you'd suggested initially if err == -EOPNOTSUPP? >> >>>> diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c >>>> index 40f0b16e4df8..9b5005d0742a 100644 >>>> --- a/net/bridge/br_switchdev.c >>>> +++ b/net/bridge/br_switchdev.c >>>> @@ -504,6 +504,7 @@ static void br_switchdev_mdb_complete(struct net_device *dev, int err, void *pri >>>>       struct net_bridge_mdb_entry *mp; >>>>       struct net_bridge_port *port = data->port; >>>>       struct net_bridge *br = port->br; >>>> +    u8 old_flags; >>>> >> >> +    if (err == -EOPNOTSUPP) >> +        goto notsupp; >> >>>>       spin_lock_bh(&br->multicast_lock); >>>>       mp = br_mdb_ip_get(br, &data->ip); >>>> @@ -514,7 +515,10 @@ static void br_switchdev_mdb_complete(struct net_device *dev, int err, void *pri >>>>           if (p->key.port != port) >>>>               continue; >>>>   +        old_flags = p->flags; >>>>           br_multicast_set_pg_offload_flags(p, !err); >>>> +        if (br_mdb_should_notify(br, old_flags ^ p->flags)) >>>> +            br_mdb_flag_change_notify(br->dev, mp, p); >>>>       } >>>>   out: >>>>       spin_unlock_bh(&br->multicast_lock); >>> >> >> + notsupp: >>     kfree(priv); > > Looks good to me. Thanks! Thanks for the review! And a logistic question. Now that part 1 and part 2 are ack'd (thanks again for the review), when I send out v3, should I resend those (unmodified part 1 and part 2) with my v3 patch series, or should I break this one off and only send part 3 v3 as a separate patch? Thanks, Joseph