Daniel Borkmann <daniel@xxxxxxxxxxxxx> writes:
> On 10/15/20 9:34 PM, Toke Høiland-Jørgensen wrote:
>> David Ahern <dsahern@xxxxxxxxx> writes:
>>> On 10/15/20 9:46 AM, Toke Høiland-Jørgensen wrote:
>>>> diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
>>>> index bf5a99d803e4..980cc1363be8 100644
>>>> --- a/include/uapi/linux/bpf.h
>>>> +++ b/include/uapi/linux/bpf.h
>>>> @@ -3677,15 +3677,19 @@ union bpf_attr {
>>>> * Return
>>>> * The id is returned or 0 in case the id could not be retrieved.
>>>> *
>>>> - * long bpf_redirect_neigh(u32 ifindex, u64 flags)
>>>> + * long bpf_redirect_neigh(u32 ifindex, struct bpf_redir_neigh *params, int plen, u64 flags)
>>>
>>> why not fold ifindex into params? with params and plen this should be
>>> extensible later if needed.
>>
>> Figured this way would make it easier to run *without* the params (like
>> in the existing examples). But don't feel strongly about it, let's see
>> what Daniel thinks.
>
> My preference is what Toke has here, this simplifies use by just being able to
> call bpf_redirect_neigh(ifindex, NULL, 0, 0) when just single external facing
> device is used.
>
>>> A couple of nits below that caught me eye.
>>
>> Thanks, will fix; the kernel bot also found a sparse warning, so I guess
>> I need to respin anyway (but waiting for Daniel's comments and/or
>> instructions on what tree to properly submit this to).
>
> Given API change, lets do bpf. (Will review the rest later today.)
Right, ACK. I'll wait for your review, then resubmit against the bpf
tree :)
-Toke
