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authorAlexey Kardashevskiy <aik@ozlabs.ru>2016-09-13 17:11:54 +1000
committerJason Wang <jasowang@redhat.com>2016-09-27 17:54:22 +0800
commit584613eacb3840c1803e665ed7edd4ac186deced (patch)
tree3a8612612046148dafead193f3b905c07645f6f4 /qemu-options.hx
parentfb56d323e2c9472ba4c25fc0f13f2aaddda62380 (diff)
tap: Allow specifying a bridge
The tap backend is already using qemu-bridge-helper to attach tap interface to a bridge but (unlike the bridge backend) it always uses the default bridge name - br0. This adds a "br" property support to the tap backend. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Greg Kurz <groug@kaod.org> Tested-by: Greg Kurz <groug@kaod.org> Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'qemu-options.hx')
-rw-r--r--qemu-options.hx12
1 files changed, 7 insertions, 5 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index 987d055481..01f01dfadc 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1598,10 +1598,11 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev,
" configure a host TAP network backend with ID 'str'\n"
#else
"-netdev tap,id=str[,fd=h][,fds=x:y:...:z][,ifname=name][,script=file][,downscript=dfile]\n"
- " [,helper=helper][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off]\n"
+ " [,br=bridge][,helper=helper][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off]\n"
" [,vhostfd=h][,vhostfds=x:y:...:z][,vhostforce=on|off][,queues=n]\n"
" [,poll-us=n]\n"
" configure a host TAP network backend with ID 'str'\n"
+ " connected to a bridge (default=" DEFAULT_BRIDGE_INTERFACE ")\n"
" use network scripts 'file' (default=" DEFAULT_NETWORK_SCRIPT ")\n"
" to configure it and 'dfile' (default=" DEFAULT_NETWORK_DOWN_SCRIPT ")\n"
" to deconfigure it\n"
@@ -1888,8 +1889,8 @@ processed and applied to -net user. Mixing them with the new configuration
syntax gives undefined results. Their use for new applications is discouraged
as they will be removed from future versions.
-@item -netdev tap,id=@var{id}[,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,helper=@var{helper}]
-@itemx -net tap[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,helper=@var{helper}]
+@item -netdev tap,id=@var{id}[,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,br=@var{bridge}][,helper=@var{helper}]
+@itemx -net tap[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,br=@var{bridge}][,helper=@var{helper}]
Connect the host TAP network interface @var{name} to VLAN @var{n}.
Use the network script @var{file} to configure it and the network script
@@ -1900,8 +1901,9 @@ automatically provides one. The default network configure script is
to disable script execution.
If running QEMU as an unprivileged user, use the network helper
-@var{helper} to configure the TAP interface. The default network
-helper executable is @file{/path/to/qemu-bridge-helper}.
+@var{helper} to configure the TAP interface and attach it to the bridge.
+The default network helper executable is @file{/path/to/qemu-bridge-helper}
+and the default bridge device is @file{br0}.
@option{fd}=@var{h} can be used to specify the handle of an already
opened host TAP interface.