[Devel] [PATCH rh7 00/11] Backort of "Handle multiple received packets at each stage"

[Alexey Kuznetsov]

Hello!

The support looks very simple. I think we should implement it at least
for ixgbe used at our ssd-only high perf cluster p[4-9].perf.sw.ru
This way we can estimate real advantages.



On Tue, Sep 11, 2018 at 2:33 PM, Kirill Tkhai <ktkhai at virtuozzo.com> wrote:
> On 9/10/18 6:39 PM, Andrey Ryabinin wrote:
>> Backport of 2d1b138505dc29bbd7ac5f82f5a10635ff48bddb ("Handle multiple received packets at each stage")
>> The main differencies from upstream is that our NF_HOOK() doesn't have 'struct net *net'
>> argument, so I simply dropped it.
>> The other thing is that we don't have generic XDP, so the hunk realted
>> to this feature ifdef'ed out in patch "net: core: Another step of skb receive list processing".
>>
>> Andrey Ryabinin (1):
>>   net/skbuff: Add ->list to struct sk_buff;
>>
>> Edward Cree (9):
>>   net: core: trivial netif_receive_skb_list() entry point
>>   sfc: batch up RX delivery
>>   net: core: unwrap skb list receive slightly further
>>   net: core: Another step of skb receive list processing
>>   net: core: another layer of lists, around PF_MEMALLOC skb handling
>>   net: core: propagate SKB lists through packet_type lookup
>>   net: ipv4: listified version of ip_rcv
>>   net: ipv4: listify ip_rcv_finish
>>   net: don't bother calling list RX functions on empty lists
>>
>> Vlastimil Babka (1):
>>   mm: introduce memalloc_noreclaim_{save,restore}
>>
>>  drivers/net/ethernet/sfc/efx.c        |  12 +++
>>  drivers/net/ethernet/sfc/net_driver.h |   3 +
>>  drivers/net/ethernet/sfc/rx.c         |   7 +-
>>  include/linux/list.h                  |  30 ++++++
>>  include/linux/netdevice.h             |   4 +
>>  include/linux/netfilter.h             |  23 +++++
>>  include/linux/sched/mm.h              |  12 +++
>>  include/linux/skbuff.h                |   1 +
>>  include/net/ip.h                      |   2 +
>>  include/trace/events/net.h            |   7 ++
>>  mm/page_alloc.c                       |   6 +-
>>  mm/vmscan.c                           |  15 ++-
>>  net/core/dev.c                        | 175 +++++++++++++++++++++++++++++++++-
>>  net/ipv4/af_inet.c                    |   1 +
>>  net/ipv4/ip_input.c                   | 125 +++++++++++++++++++++---
>>  15 files changed, 397 insertions(+), 26 deletions(-)
>
> Looks OK for me. The only thing is it is implemented for only driver sfc
> at the moment even in mainstream. But someone may be working for support
> in the rest of drivers at the moment, so we'll pick new patches, when they
> are ready.
>
> Kirill
>