From: Willem de Bruijn <willemdebruijn.ker...@gmail.com>
Date: Wed, 3 Jul 2019 10:45:13 -0400
> On Wed, Jul 3, 2019 at 10:07 AM Paolo Abeni <pab...@redhat.com> wrote:
>>
>> This series extends ICW usage to one of the few remaining spots in fast-path
>> still hitting per packet retpoline overhead, namely the
>> sk_proto->{send,recv}msg
>> calls.
>>
>> The first 3 patches in this series refactor the existing code so that
>> applying
>> the ICW macros is straight-forward: we demux inet_{recv,send}msg in ipv4 and
>> ipv6 variants so that each of them can easily select the appropriate TCP or
>> UDP
>> direct call. While at it, a new helper is created to avoid excessive code
>> duplication, and the current ICWs for inet_{recv,send}msg are adjusted
>> accordingly.
>>
>> The last 2 patches really introduce the new ICW use-case, respectively for
>> the
>> ipv6 and the ipv4 code path.
>>
>> This gives up to 5% performance improvement under UDP flood, and smaller but
>> measurable gains for TCP RR workloads.
>>
>> v1 -> v2:
>> - drop inet6_{recv,send}msg declaration from header file,
>> prefer ICW macro instead
>> - avoid unneeded reclaration for udp_sendmsg, as suggested by Willem
>>
>> Paolo Abeni (5):
>> inet: factor out inet_send_prepare()
>> ipv6: provide and use ipv6 specific version for {recv,send}msg
>> net: adjust socket level ICW to cope with ipv6 variant of
>> {recv,send}msg
>> ipv6: use indirect call wrappers for {tcp,udpv6}_{recv,send}msg()
>> ipv4: use indirect call wrappers for {tcp,udp}_{recv,send}msg()
>
> Acked-by: Willem de Bruijn <will...@google.com>
Series applied, thanks.
