bpf.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Lorenz Bauer <lmb@cloudflare.com>
To: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
	duanxiongchun@bytedance.com,
	Dongdong Wang <wangdongdong.6@bytedance.com>,
	Jiang Wang <jiang.wang@bytedance.com>,
	Cong Wang <cong.wang@bytedance.com>,
	John Fastabend <john.fastabend@gmail.com>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Jakub Sitnicki <jakub@cloudflare.com>
Subject: Re: [Patch bpf-next v2 9/9] selftests/bpf: add a test case for udp sockmap
Date: Wed, 3 Mar 2021 10:20:28 +0000	[thread overview]
Message-ID: <CACAyw98WfDE5HKP8NDHa5V2JzzXUyuWHnfnXNRUgxGvktZ5VBA@mail.gmail.com> (raw)
In-Reply-To: <CAM_iQpX3qqpKyOW2ohYo0e-5GO_wpoBBqv1BnrLLRsufMwO2rg@mail.gmail.com>

On Tue, 2 Mar 2021 at 18:05, Cong Wang <xiyou.wangcong@gmail.com> wrote:
>
> On Tue, Mar 2, 2021 at 8:32 AM Lorenz Bauer <lmb@cloudflare.com> wrote:
> >
> > On Tue, 2 Mar 2021 at 02:38, Cong Wang <xiyou.wangcong@gmail.com> wrote:
> > >
> > > From: Cong Wang <cong.wang@bytedance.com>
> > >
> > > Add a test case to ensure redirection between two UDP sockets work.
> >
> > I basically don't understand how splicing works, but watching from the
> > sidelines makes me think it'd be good to have more thorough tests.
> > tools/testing/selftests/bpf/test_sockmap.c has quite elaborate tests
> > for the TCP part, it'd be nice to get similar tests going for UDP. For
>
> Sure, TCP supports more than just BPF_SK_SKB_VERDICT, hence
> why it must have more tests than UDP. ;)
>
> > example:
> >
> > * sendfile?
> > * sendmmsg
>
> Does UDP support any of these? I don't think so, at least not in my
> patchset.

I have no idea, thanks for checking :)

>
> > * Something Jakub mentioned: what happens when a connected, spliced
> > socket is disconnected via connect(AF_UNSPEC)? Seems like we don't
> > hook sk_prot->disconnect anywhere.
>
> But we hook ->unhash(), right?

I wasn't aware that ->disconnect calls unhash, thanks!

-- 
Lorenz Bauer  |  Systems Engineer
6th Floor, County Hall/The Riverside Building, SE1 7PB, UK

www.cloudflare.com

      reply	other threads:[~2021-03-03 22:56 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-02  2:37 [Patch bpf-next v2 0/9] sockmap: introduce BPF_SK_SKB_VERDICT and support UDP Cong Wang
2021-03-02  2:37 ` [Patch bpf-next v2 1/9] sock_map: introduce BPF_SK_SKB_VERDICT Cong Wang
2021-03-02  2:37 ` [Patch bpf-next v2 2/9] sock: introduce sk_prot->update_proto() Cong Wang
2021-03-02 16:22   ` Lorenz Bauer
2021-03-02 18:23     ` Cong Wang
2021-03-03  9:35       ` Lorenz Bauer
2021-03-03 18:20         ` Cong Wang
2021-03-04  9:30           ` Lorenz Bauer
2021-03-04 23:52       ` Cong Wang
2021-03-06  0:27         ` John Fastabend
2021-03-06  0:57           ` Cong Wang
2021-03-06  1:55             ` John Fastabend
2021-03-09 17:53               ` Cong Wang
2021-03-10  6:33                 ` John Fastabend
2021-03-02  2:37 ` [Patch bpf-next v2 3/9] udp: implement ->sendmsg_locked() Cong Wang
2021-03-02  2:37 ` [Patch bpf-next v2 4/9] udp: implement ->read_sock() for sockmap Cong Wang
2021-03-03  6:26   ` Yonghong Song
2021-03-02  2:37 ` [Patch bpf-next v2 5/9] udp: add ->read_sock() and ->sendmsg_locked() to ipv6 Cong Wang
2021-03-02 16:23   ` Lorenz Bauer
2021-03-02 17:59     ` Cong Wang
2021-03-02  2:37 ` [Patch bpf-next v2 6/9] skmsg: extract __tcp_bpf_recvmsg() and tcp_bpf_wait_data() Cong Wang
2021-03-02  2:37 ` [Patch bpf-next v2 7/9] udp: implement udp_bpf_recvmsg() for sockmap Cong Wang
2021-03-02  2:37 ` [Patch bpf-next v2 8/9] sock_map: update sock type checks for UDP Cong Wang
2021-03-03  6:37   ` Yonghong Song
2021-03-03 18:02     ` Cong Wang
2021-03-03 18:50       ` Yonghong Song
2021-03-02  2:37 ` [Patch bpf-next v2 9/9] selftests/bpf: add a test case for udp sockmap Cong Wang
2021-03-02 16:31   ` Lorenz Bauer
2021-03-02 18:05     ` Cong Wang
2021-03-03 10:20       ` Lorenz Bauer [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CACAyw98WfDE5HKP8NDHa5V2JzzXUyuWHnfnXNRUgxGvktZ5VBA@mail.gmail.com \
    --to=lmb@cloudflare.com \
    --cc=bpf@vger.kernel.org \
    --cc=cong.wang@bytedance.com \
    --cc=daniel@iogearbox.net \
    --cc=duanxiongchun@bytedance.com \
    --cc=jakub@cloudflare.com \
    --cc=jiang.wang@bytedance.com \
    --cc=john.fastabend@gmail.com \
    --cc=netdev@vger.kernel.org \
    --cc=wangdongdong.6@bytedance.com \
    --cc=xiyou.wangcong@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).