netdev - Re: AF_VSOCK loopback

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Mon, 14 Nov 2016 19:14:46 +0000
From:   Stefan Hajnoczi <stefanha@...hat.com>
To:     "Jorgen S. Hansen" <jhansen@...are.com>
Cc:     "cavery@...hat.com" <cavery@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: AF_VSOCK loopback

On Fri, Nov 11, 2016 at 02:14:44PM +0000, Jorgen S. Hansen wrote:
> Hi Stefan,
> 
> All datagram communication in VMCI based AF_VSOCK is going through the host - also for loopback communication. The only difference wrt loopback is that the VMCI queue pairs implementing the shared queues for the stream protocols aren't registered with the hypervisor - they are created specifying the VMCI_QPFLAG_LOCAL flag, and exist only as local guest memory.
> 
> So in the current form, there isn't much loopback code in the vmci AF_VSOCK implementation, so it doesn't seem like there would be much to share either.

Thanks for clarifying.  I'm playing with a virtio-vsock implementation
of loopback and expect send patches later this week.

Stefan

Download attachment "signature.asc" of type "application/pgp-signature" (456 bytes)