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-rw-r--r--net/tap.c4
-rw-r--r--qapi-schema.json3
-rw-r--r--qemu-options.hx12
3 files changed, 13 insertions, 6 deletions
diff --git a/net/tap.c b/net/tap.c
index 6abb962efd..b6896a7b7c 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -857,7 +857,9 @@ free_fail:
return -1;
}
- fd = net_bridge_run_helper(tap->helper, DEFAULT_BRIDGE_INTERFACE,
+ fd = net_bridge_run_helper(tap->helper,
+ tap->has_br ?
+ tap->br : DEFAULT_BRIDGE_INTERFACE,
errp);
if (fd == -1) {
return -1;
diff --git a/qapi-schema.json b/qapi-schema.json
index e50706111c..c3dcf11a4a 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -2636,6 +2636,8 @@
#
# @downscript: #optional script to shut down the interface
#
+# @br: #optional bridge name (since 2.8)
+#
# @helper: #optional command to execute to configure bridge
#
# @sndbuf: #optional send buffer limit. Understands [TGMKkb] suffixes.
@@ -2665,6 +2667,7 @@
'*fds': 'str',
'*script': 'str',
'*downscript': 'str',
+ '*br': 'str',
'*helper': 'str',
'*sndbuf': 'size',
'*vnet_hdr': 'bool',
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.