netdev - Re: [PATCH v6 3/3] NFSD: add write

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Message-ID: <ZbDdzwvP6-O2zosC@lore-desk>
Date: Wed, 24 Jan 2024 10:52:15 +0100
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Jeff Layton <jlayton@...nel.org>
Cc: Chuck Lever <chuck.lever@...cle.com>, NeilBrown <neilb@...e.de>,
	linux-nfs@...r.kernel.org, lorenzo.bianconi@...hat.com,
	kuba@...nel.org, horms@...nel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v6 3/3] NFSD: add write_ports to netlink command

[...]
> 
> That's a great question. We do need to properly support the -H option to
> rpc.nfsd. What we do today is look up the hostname or address using
> getaddrinfo, and then open a listening socket for that address and then
> pass that fd down to the kernel, which I think then takes the socket and
> sticks it on sv_permsocks.
> 
> All of that seems a bit klunky. Ideally, I'd say the best thing would be
> to allow userland to pass the sockaddr we look up directly via netlink,
> and then let the kernel open the socket. That will probably mean
> refactoring some of the svc_xprt_create machinery to take a sockaddr,
> but I don't think it looks too hard to do.

Do we already have a specific use case for it? I think we can even add it
later when we have a defined use case for it on top of the current series.

Regards,
Lorenzo

> 
> -- 
> Jeff Layton <jlayton@...nel.org>
> 

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