Re: [Patch bpf-next v2 9/9] selftests/bpf: add a test case for udp sockmap

On Tue, 2 Mar 2021 at 02:38, Cong Wang [off-list ref] wrote:

From: Cong Wang <redacted>

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
example:

* sendfile?
* sendmmsg
* 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.

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