[RFC v1] nvme-tcp: enable linger socket option on shutdown

[Christoph Hellwig]

On Fri, Sep 03, 2021 at 02:17:57PM +0200, Daniel Wagner wrote:
> When the no linger is set, the networking stack sends FIN followed by
> RST immediately when shutting down the socket. By enabling linger when
> shutting down we have a proper shutdown sequence on the wire.
> 
> Signed-off-by: Daniel Wagner <dwagner at suse.de>
> ---
> The current shutdown sequence on the wire is a bit harsh and
> doesn't let the remote host to react. I suppose we should
> introduce a short (how long?) linger pause when shutting down
> the connection. Thoughs?

Why?  I'm not really a TCP expert, but why is this different from
say iSCSI or NBD?