netdev - Re: [PATCH bpf-next v6 0/5] sockmap: add sockmap support for unix stream socket

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Message-ID: <CAEf4BzZe-Kmoj4HKe0oiDMq_KaSQAfdVAEqksd3d8Tx7cX+Ftw@mail.gmail.com>
Date:   Fri, 13 Aug 2021 15:42:40 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Jiang Wang <jiang.wang@...edance.com>
Cc:     Networking <netdev@...r.kernel.org>,
        Cong Wang <cong.wang@...edance.com>,
        duanxiongchun@...edance.com, xieyongji@...edance.com,
        chaiwen.cc@...edance.com, "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jakub Sitnicki <jakub@...udflare.com>,
        Lorenz Bauer <lmb@...udflare.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>, Shuah Khan <shuah@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Johan Almbladh <johan.almbladh@...finetworks.com>,
        open list <linux-kernel@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH bpf-next v6 0/5] sockmap: add sockmap support for unix
 stream socket

On Mon, Aug 9, 2021 at 12:47 PM Jiang Wang <jiang.wang@...edance.com> wrote:
>
> This patch series add support for unix stream type
> for sockmap. Sockmap already supports TCP, UDP,
> unix dgram types. The unix stream support is similar
> to unix dgram.
>
> Also add selftests for unix stream type in sockmap tests.
>

Hey Jiang,

This patch doesn't apply cleanly to bpf-next anymore ([0]), can you
please rebase and resubmit, adding John's and Jakub's acks along the
way? Thanks!

  [0] https://github.com/kernel-patches/bpf/pull/1563#issuecomment-896128082

>
> Jiang Wang (5):
>   af_unix: add read_sock for stream socket types
>   af_unix: add unix_stream_proto for sockmap
>   selftest/bpf: add tests for sockmap with unix stream type.
>   selftest/bpf: change udp to inet in some function names
>   selftest/bpf: add new tests in sockmap for unix stream to tcp.
>
>  include/net/af_unix.h                         |  8 +-
>  net/unix/af_unix.c                            | 91 +++++++++++++++---
>  net/unix/unix_bpf.c                           | 93 ++++++++++++++-----
>  .../selftests/bpf/prog_tests/sockmap_listen.c | 48 ++++++----
>  4 files changed, 187 insertions(+), 53 deletions(-)
>
> v1 -> v2 :
>  - Call unhash in shutdown.
>  - Clean up unix_create1 a bit.
>  - Return -ENOTCONN if socket is not connected.
>
> v2 -> v3 :
>  - check for stream type in update_proto
>  - remove intermediate variable in __unix_stream_recvmsg
>  - fix compile warning in unix_stream_recvmsg
>
> v3 -> v4 :
>  - remove sk_is_unix_stream, just check TCP_ESTABLISHED for UNIX sockets.
>  - add READ_ONCE in unix_dgram_recvmsg
>  - remove type check in unix_stream_bpf_update_proto
>
> v4 -> v5 :
>  - add two missing READ_ONCE for sk_prot.
>
> v5 -> v6 :
>  - fix READ_ONCE by reading to a local variable first.
>
> --
> 2.20.1
>