netdev - Re: [PATCH net-next 0/9] tcp: receive path optimizations

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Message-ID: <CACSApvaMpim0Wk3pK8aaSdd-cp+=PcD64v9fFPXrxWp5_39nBg@mail.gmail.com>
Date:   Thu, 21 Oct 2021 13:01:45 -0400
From:   Soheil Hassas Yeganeh <soheil@...gle.com>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Neal Cardwell <ncardwell@...gle.com>
Subject: Re: [PATCH net-next 0/9] tcp: receive path optimizations

On Thu, Oct 21, 2021 at 12:23 PM Eric Dumazet <eric.dumazet@...il.com> wrote:
>
> From: Eric Dumazet <edumazet@...gle.com>
>
> This series aims to reduce cache line misses in RX path.
>
> I am still working on better cache locality in tcp_sock but
> this will wait few more weeks.
>
> Eric Dumazet (9):
>   tcp: move inet->rx_dst_ifindex to sk->sk_rx_dst_ifindex
>   ipv6: move inet6_sk(sk)->rx_dst_cookie to sk->sk_rx_dst_cookie
>   net: avoid dirtying sk->sk_napi_id
>   net: avoid dirtying sk->sk_rx_queue_mapping
>   ipv6: annotate data races around np->min_hopcount
>   ipv6: guard IPV6_MINHOPCOUNT with a static key
>   ipv4: annotate data races arount inet->min_ttl
>   ipv4: guard IP_MINTTL with a static key
>   ipv6/tcp: small drop monitor changes

Acked-by: Soheil Hassas Yeganeh <soheil@...gle.com>

Very nice patch series!  The IP_MINTTL patch is an excellent find. I
wonder how many more of these we have. Thank you, Eric!

>  include/linux/ipv6.h     |  1 -
>  include/net/busy_poll.h  |  3 ++-
>  include/net/inet_sock.h  |  3 +--
>  include/net/ip.h         |  2 ++
>  include/net/ipv6.h       |  1 +
>  include/net/sock.h       | 11 +++++++----
>  net/ipv4/ip_sockglue.c   | 11 ++++++++++-
>  net/ipv4/tcp_ipv4.c      | 25 ++++++++++++++++---------
>  net/ipv6/ipv6_sockglue.c | 11 ++++++++++-
>  net/ipv6/tcp_ipv6.c      | 35 +++++++++++++++++++++--------------
>  net/ipv6/udp.c           |  4 ++--
>  11 files changed, 72 insertions(+), 35 deletions(-)
>
> --
> 2.33.0.1079.g6e70778dc9-goog
>