diff options
| author | Mike Ryan <mikeryan@isi.edu> | 2010-12-01 11:16:47 -0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2010-12-09 12:45:50 +0200 |
| commit | 3a75e74c76cef8daa7944159b016c4ee7c56e568 (patch) | |
| tree | 9b3b7f9f45c49a3d29d6bfb3b0d553b525942191 /qemu-options.hx | |
| parent | 138b38b61bf92d4e9588acf934e532499c94e185 (diff) | |
net/sock: option to specify local address
Add an option to specify the host IP to send multicast packets from,
when using a multicast socket for networking. The option takes an IP
address and sets the IP_MULTICAST_IF socket option, which causes the
packets to use that IP's interface as an egress.
This is useful if the host machine has several interfaces with several
virtual networks across disparate interfaces.
Signed-off-by: Mike Ryan <mikeryan@ISI.EDU>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 4d99a58fc5..accd16a55c 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1061,8 +1061,9 @@ DEF("net", HAS_ARG, QEMU_OPTION_net, #endif "-net socket[,vlan=n][,name=str][,fd=h][,listen=[host]:port][,connect=host:port]\n" " connect the vlan 'n' to another VLAN using a socket connection\n" - "-net socket[,vlan=n][,name=str][,fd=h][,mcast=maddr:port]\n" + "-net socket[,vlan=n][,name=str][,fd=h][,mcast=maddr:port[,localaddr=addr]]\n" " connect the vlan 'n' to multicast maddr and port\n" + " use 'localaddr=addr' to specify the host address to send packets from\n" #ifdef CONFIG_VDE "-net vde[,vlan=n][,name=str][,sock=socketpath][,port=n][,group=groupname][,mode=octalmode]\n" " connect the vlan 'n' to port 'n' of a vde switch running\n" @@ -1256,7 +1257,7 @@ qemu linux.img -net nic,macaddr=52:54:00:12:34:57 \ -net socket,connect=127.0.0.1:1234 @end example -@item -net socket[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}] [,mcast=@var{maddr}:@var{port}] +@item -net socket[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,mcast=@var{maddr}:@var{port}[,localaddr=@var{addr}]] Create a VLAN @var{n} shared with another QEMU virtual machines using a UDP multicast socket, effectively making a bus for @@ -1296,6 +1297,12 @@ qemu linux.img -net nic,macaddr=52:54:00:12:34:56 \ /path/to/linux ubd0=/path/to/root_fs eth0=mcast @end example +Example (send packets from host's 1.2.3.4): +@example +qemu linux.img -net nic,macaddr=52:54:00:12:34:56 \ + -net socket,mcast=239.192.168.1:1102,localaddr=1.2.3.4 +@end example + @item -net vde[,vlan=@var{n}][,name=@var{name}][,sock=@var{socketpath}] [,port=@var{n}][,group=@var{groupname}][,mode=@var{octalmode}] Connect VLAN @var{n} to PORT @var{n} of a vde switch running on host and listening for incoming connections on @var{socketpath}. Use GROUP @var{groupname} |