[Bridge] [RFC PATCH bpf-next 0/3] Add a new bpf helper for FDB lookup

[Yoshiki Komachi]

> 2020/08/06 1:36、David Ahern <dsahern at gmail.com>のメール:
> 
> On 8/5/20 4:26 AM, Yoshiki Komachi wrote:
>>> 
>>> Just to clarify for myself. I expect that with just the helpers here
>>> we should only expect static configurations to work, e.g. any learning
>>> and/or aging is not likely to work if we do redirects in the XDP path.
>> 
>> As you described above, learning and aging don’t work at this point. 
>> 
>> IMO, another helper for learning will be required to fill the requirements.
>> I guess that the helper will enable us to use the aging feature as well
>> because the aging is the functionality of bridge fdb.
> 
> One option is to have a flag that bumps the ageing on successful lookup
> and do that in 1 call. You will already have access to the fdb entry.

It seems like a good idea to me! I guess that the flags in my suggested bpf
helper for the FDB lookup will be useful for such a case.

Thanks & Best regards,

—
Yoshiki Komachi
komachi.yoshiki at gmail.com