netdev - Re: [PATCH net-next v14 01/12] vsock: add netns to vsock core

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Message-ID: <aWaq9vbBJGqg9+DU@devvm11784.nha0.facebook.com>
Date: Tue, 13 Jan 2026 12:28:38 -0800
From: Bobby Eshleman <bobbyeshleman@...il.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: Stefano Garzarella <sgarzare@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Stefan Hajnoczi <stefanha@...hat.com>,
	Jason Wang <jasowang@...hat.com>,
	Eugenio Pérez <eperezma@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
	Bryan Tan <bryan-bt.tan@...adcom.com>,
	Vishnu Dasa <vishnu.dasa@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Shuah Khan <shuah@...nel.org>, Long Li <longli@...rosoft.com>,
	linux-kernel@...r.kernel.org, virtualization@...ts.linux.dev,
	netdev@...r.kernel.org, kvm@...r.kernel.org,
	linux-hyperv@...r.kernel.org, linux-kselftest@...r.kernel.org,
	berrange@...hat.com, Sargun Dhillon <sargun@...gun.me>,
	Bobby Eshleman <bobbyeshleman@...a.com>
Subject: Re: [PATCH net-next v14 01/12] vsock: add netns to vsock core

On Tue, Jan 13, 2026 at 02:45:32AM -0500, Michael S. Tsirkin wrote:
> On Mon, Jan 12, 2026 at 07:11:10PM -0800, Bobby Eshleman wrote:
> > From: Bobby Eshleman <bobbyeshleman@...a.com>
> > 
> > Add netns logic to vsock core. Additionally, modify transport hook
> > prototypes to be used by later transport-specific patches (e.g.,
> > *_seqpacket_allow()).
> > 
> > Namespaces are supported primarily by changing socket lookup functions
> > (e.g., vsock_find_connected_socket()) to take into account the socket
> > namespace and the namespace mode before considering a candidate socket a
> > "match".
> > 
> > This patch also introduces the sysctl /proc/sys/net/vsock/ns_mode to
> > report the mode and /proc/sys/net/vsock/child_ns_mode to set the mode
> > for new namespaces.
> > 
> > Add netns functionality (initialization, passing to transports, procfs,
> > etc...) to the af_vsock socket layer. Later patches that add netns
> > support to transports depend on this patch.
> > 
> > dgram_allow(), stream_allow(), and seqpacket_allow() callbacks are
> > modified to take a vsk in order to perform logic on namespace modes. In
> > future patches, the net will also be used for socket
> > lookups in these functions.
> > 
> > Signed-off-by: Bobby Eshleman <bobbyeshleman@...a.com>
> > ---
> > Changes in v14:
> > - include linux/sysctl.h in af_vsock.c
> > - squash patch 'vsock: add per-net vsock NS mode state' into this patch
> >   (prior version can be found here):
> >   https://lore.kernel.org/all/20251223-vsock-vmtest-v13-1-9d6db8e7c80b@meta.com/)
> 
> So, about the static port, are you going to address it in
> the next version then?

Yes, just wanted to get the rebase out to unblock review of the
child_ns_mode changes.

I should have mentioned the static port was a known issue and still
under discussion.

- Bobby