From: Michael S. Tsirkin <mst@redhat.com>
Date: Thu, 14 Jan 2010 06:17:09 +0000 (+0000)
Subject: tun: export underlying socket
X-Git-Tag: v2.6.34-rc1~233^2~579
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05c2828c72c4eabf62376adfe27bd24797621f62;p=pandora-kernel.git

tun: export underlying socket

Tun device looks similar to a packet socket
in that both pass complete frames from/to userspace.

This patch fills in enough fields in the socket underlying tun driver
to support sendmsg/recvmsg operations, and message flags
MSG_TRUNC and MSG_DONTWAIT, and exports access to this socket
to modules.  Regular read/write behaviour is unchanged.

This way, code using raw sockets to inject packets
into a physical device, can support injecting
packets into host network stack almost without modification.

First user of this interface will be vhost virtualization
accelerator.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed