2018-04-18 15:34 UTC+0200 ~ Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
> On Tue, 17 Apr 2018 15:34:38 +0100
> Quentin Monnet <quentin.monnet@xxxxxxxxxxxxx> wrote:
>
>> diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
>> index 350459c583de..3d329538498f 100644
>> --- a/include/uapi/linux/bpf.h
>> +++ b/include/uapi/linux/bpf.h
>> @@ -1276,6 +1276,50 @@ union bpf_attr {
>> * Return
>> * 0 on success, or a negative error in case of failure.
>> *
>> + * int bpf_redirect_map(struct bpf_map *map, u32 key, u64 flags)
>> + * Description
>> + * Redirect the packet to the endpoint referenced by *map* at
>> + * index *key*. Depending on its type, his *map* can contain
> ^^^
>
> "his" -> "this"
Thanks!
>> + * references to net devices (for forwarding packets through other
>> + * ports), or to CPUs (for redirecting XDP frames to another CPU;
>> + * but this is only implemented for native XDP (with driver
>> + * support) as of this writing).
>> + *
>> + * All values for *flags* are reserved for future usage, and must
>> + * be left at zero.
>> + * Return
>> + * **XDP_REDIRECT** on success, or **XDP_ABORT** on error.
>> + *
>
> "XDP_ABORT" -> "XDP_ABORTED"
Ouch. And I did the same for bpf_redirect(). Thanks for the catch.
>
> I don't know if it's worth mentioning in the doc/man-page; that for XDP
> using bpf_redirect_map() is a HUGE performance advantage, compared to
> the bpf_redirect() call ?
It seems worth to me. How would you simply explain the reason for this
difference?
Quentin
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