Re: [PATCH bpf-next v1 2/5] af_unix: add unix_stream_proto for sockmap

From: John Fastabend
Date: Wed Jul 28 2021 - 14:44:09 EST

Cong Wang wrote:
> On Tue, Jul 27, 2021 at 9:37 AM John Fastabend <john.fastabend@xxxxxxxxx> wrote:
> > Do we really need an unhash hook for unix_stream? I'm doing some testing
> > now to pull it out of TCP side as well. It seems to be an artifact of old
> > code that is no longer necessary. On TCP side at least just using close()
> > looks to be enough now.
> How do you handle the disconnection from remote without ->unhash()?

Would close() not work for stream/dgram sockets?

> For all stream sockets, we still only allow established sockets to stay
> in sockmap, which means we have to remove it if it is disconnected
> or closed.


> But it seems Jiang forgot to call ->unhash() when disconnecting.

Aha so we need to add it in af_unix code I guess. Anyways looking forward
to v2.