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Commit Graph

11 Commits

Author SHA1 Message Date
Markus Armbruster
175de52487 Clean up decorations and whitespace around header guards
Cleaned up with scripts/clean-header-guards.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-12 16:20:46 +02:00
Peter Maydell
30456d5ba3 all: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23 12:43:05 +00:00
Greg Kurz
c80cd6bb9c tap: add VNET_LE/VNET_BE operations
The linux tap and macvtap backends can be told to parse vnet headers
according to little or big endian. This is done through the TUNSETVNETLE
and TUNSETVNETBE ioctls.

This patch brings all the plumbing for QEMU to use these APIs.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-17 17:12:54 +02:00
Peter Lieven
d26e445c80 tap: set IFF_ONE_QUEUE per default
historically the kernel queues packets two times. once
at the device and second in qdisc. this is believed to cause
interface stalls if one of these queues overruns.

setting IFF_ONE_QUEUE is the default in kernels >= 3.8. the
flag is ignored since then. see kernel commit
5d097109257c03a71845729f8db6b5770c4bbedc

Signed-off-by: Peter Lieven <pl@kamp.de>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-02-27 16:10:47 +01:00
Jason Wang
4e4f9ae7da tap: import linux multiqueue constants
Import multiqueue constants from if_tun.h from 3.8-rc3. A new ifr flag
IFF_MULTI_QUEUE were introduced to create a multiqueue backend by calling
TUNSETIFF with the this flag and with the same interface name many times.

A new ioctl TUNSETQUEUE were introduced. When doing this ioctl with
IFF_DETACH_QUEUE, the queue were disabled in the linux kernel. When doing this
ioctl with IFF_ATTACH_QUEUE, the queue were enabled in the linux kernel.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-01 11:03:01 -06:00
Paolo Bonzini
1422e32db5 net: reorganize headers
Move public headers to include/net, and leave private headers in net/.
Put the virtio headers in include/net/tap.h, removing the multiple copies
that existed.  Leave include/net/tap.h as the interface for NICs, and
net/tap_int.h as the interface for OS-specific parts of the tap backend.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19 08:31:29 +01:00
Michael S. Tsirkin
445d892f43 tap: add APIs for vnet header length
Add APIs to control host header length. First user
will be vhost-net.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-09-07 20:27:33 +03:00
Michael S. Tsirkin
ef4252b149 tap: generalize code for different vnet header len
Make host vnet header length a structure field in
preparation for using this support in linux kernel.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-09-07 20:27:28 +03:00
Anthony Liguori
ed7193ec1d Unbreak Linux build
commit 71f4effce7
  Author: Alexander Graf <agraf@suse.de>
  Date:   Fri Oct 30 22:27:00 2009 +0100

      Unbreak tap compilation on OS X

Broke the build on Linux due to a bad #if guard

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30 16:45:20 -05:00
Alexander Graf
71f4effce7 Unbreak tap compilation on OS X
Currently compiling the tap sources breaks on Mac OS X. This is because of:

  1) tap-linux.h requiring Linux includes
  2) typos
  3) missing #includes

This patch adds what's necessary to compile tap happily on Mac OS X.
I haven't tested if using tap actually works, but I don't think that's a
major issue as that code was probably seriously untested before already.

I didn't split the patch, because it's only a few lines of code and
splitting is probably not worth the effort here.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30 16:38:15 -05:00
Mark McLoughlin
f54c7bdc48 net: move tap-linux.h under net/
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30 08:39:27 -05:00