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# Date Author Comment
e5dc0b40 02/01/2013 07:03 pm Jason Wang

tap: introduce a helper to get the name of an interface

This patch introduces a helper tap_get_ifname() to get the device name of tap
device. This is needed when ifname is unspecified in the command line and qemu
were asked to create tap device by itself. In this situation, the name were...
264986e2 02/01/2013 07:03 pm Jason Wang

tap: multiqueue support

Recently, linux support multiqueue tap which could let userspace call TUNSETIFF
for a signle device many times to create multiple file descriptors as
independent queues. User could also enable/disabe a specific queue through
TUNSETQUEUE....
94fdc6d0 02/01/2013 07:03 pm Jason Wang

tap: add Linux multiqueue support

This patch add basic multiqueue support for Linux. When multiqueue is needed, we
will first check whether kernel support multiqueue tap before creating more
queues. Two new functions tap_fd_enable() and tap_fd_disable() were introduced...
9c17d615 12/19/2012 09:32 am Paolo Bonzini

softmmu: move include files to include/sysemu/

Signed-off-by: Paolo Bonzini <>
1de7afc9 12/19/2012 09:32 am Paolo Bonzini

misc: move include files to include/qemu/

Signed-off-by: Paolo Bonzini <>
1422e32d 12/19/2012 09:31 am Paolo Bonzini

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....
08c573a8 07/23/2012 01:55 pm Laszlo Ersek

convert net_init_tap() to NetClientOptions

Signed-off-by: Laszlo Ersek <>
Signed-off-by: Stefan Hajnoczi <>
3a93113a 12/06/2011 11:56 am Dong Xu Wang

fix typo: delete redundant semicolon

Double semicolons should be single.

Signed-off-by: Dong Xu Wang <>
Signed-off-by: Stefan Hajnoczi <>
445d892f 09/07/2010 08:27 pm Michael S. Tsirkin

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 <>
3690cec8 07/31/2010 10:40 pm Blue Swirl

Fix a warning on OpenSolaris

Add a missing #include statement to avoid a warning:
/src/qemu/net/tap-solaris.c: In function 'tap_open':
/src/qemu/net/tap-solaris.c:189: warning: implicit declaration of function 'error_report'

Signed-off-by: Blue Swirl <>
1ecda02b 03/16/2010 05:58 pm Markus Armbruster

error: Replace qemu_error() by error_report()

error_report() terminates the message with a newline. Strip it it
from its arguments.

This fixes a few error messages lacking a newline:
net_handle_fd_param()'s "No file descriptor named %s found", and
tap_open()'s "vnet_hdr=1 requested, but no kernel support for...
ee7139c3 12/13/2009 04:28 pm Andreas Färber

tap: Compilation fix for Solaris

Avoid an unresolved symbol error for TFR,
which is defined in sysemu.h.

Based on patch by Palle Lyckegaard.

Signed-off-by: Andreas Färber <>
Cc: Palle Lyckegaard <>
Cc: Ben Taylor <>...
f5c5e381 12/03/2009 05:41 pm Mark McLoughlin

net: fix vnet_hdr handling in solaris tap code

Print an error if the user specifies vnet_hdr=1 on the cmdline.

Signed-off-by: Mark McLoughlin <>
Signed-off-by: Anthony Liguori <>
9c282718 10/30/2009 03:39 pm Mark McLoughlin

net: move UFO support detection to tap-linux.c

Only supported on Linux

Signed-off-by: Mark McLoughlin <>
Signed-off-by: Anthony Liguori <>
15ac913b 10/30/2009 03:39 pm Mark McLoughlin

net: move tap_set_sndbuf() to tap-linux.c

TUNSETSNDBUF is only available on linux

Signed-off-by: Mark McLoughlin <>
Signed-off-by: Anthony Liguori <>
dc69004c 10/30/2009 03:39 pm Mark McLoughlin

net: move tap_probe_vnet_hdr() to tap-linux.c

Only Linux has support for IFF_VNET_HDR

Signed-off-by: Mark McLoughlin <>
Signed-off-by: Anthony Liguori <>
1faac1f7 10/30/2009 03:39 pm Mark McLoughlin

net: move tap_set_offload() code into tap-linux.c

TUNSETOFFLOAD is only available on Linux

Signed-off-by: Mark McLoughlin <>
Signed-off-by: Anthony Liguori <>
966ea5ec 10/30/2009 03:39 pm Mark McLoughlin

net: move solaris code to net/tap-solaris.c

Signed-off-by: Mark McLoughlin <>
Signed-off-by: Anthony Liguori <>