On Mon, Oct 19, 2015 at 12:49:15PM +0300, Victor Kaplansky wrote:
> For a long time QEMU has had support for UDP unicast network
> backend, but manual was missing description and usage examples.
>
> This patch adds some more documentation and an example.
>
> Signed-off-by: Victor Kaplansky <vict...@redhat.com>
Good point, thanks!
Minor comments:
> ---
> qemu-options.hx | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/qemu-options.hx b/qemu-options.hx
> index 2485b94..342bb14 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -1855,6 +1855,8 @@ qemu-system-i386 linux.img \
> -net socket,connect=127.0.0.1:1234
> @end example
>
> +
> +
> @item -netdev
> socket,id=@var{id}[,fd=@var{h}][,mcast=@var{maddr}:@var{port}[,localaddr=@var{addr}]]
> @itemx -net
> socket[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,mcast=@var{maddr}:@var{port}[,localaddr=@var{addr}]]
>
Why add this here? Probably safe to drop.
> @@ -1907,6 +1909,27 @@ qemu-system-i386 linux.img \
> -net socket,mcast=239.192.168.1:1102,localaddr=1.2.3.4
> @end example
>
> +@item -netdev
> socket,id=@var{id}[,fd=@var{h}][,udp=@var{rhost}:@var{rport}[,localaddr=@var{lhost}:@var{lport}]]
> +@itemx -net
> socket[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,udp=@var{host}:@var{rport}[,localaddr=@var{host}:@var{lport}]]
-net variant says "host" -netdev - lhost/rhost.
> +
> +Connect a VLAN @var{n} to a remote VLAN in another QEMU virtual
> +machine using a UDP tunnel. Use lport as local port and rport as
> +remote port of the tunnel.
the local port/the remote port
Pls document lhost/rhost as well.
> The two QEMU
QEMU instances
>can be running on
> +different hosts.
There are no "the two QEMU" so far.
Should this come after the examples?
> Use @option{fd=h} to specify an already opened
> +UDP socket.
> +
> +Example:
> +@example
> +# launch one QEMU instance
> +qemu-system-i386 linux.img \
> + -device virtio-net-pci,netdev=net0 \
> + -netdev
> socket,id=net0,udp=127.0.0.1:4444,localaddr=127.0.0.1:5555
> +# launch second QEMU instance sharing the network with the first one
"a second QEMU instance"
> +qemu-system-i386 linux.img \
> + -device virtio-net-pci,netdev=net0 \
> + -netdev
> socket,id=net0,udp=127.0.0.1:5555,localaddr=127.0.0.1:4444
localhost might be a bit clearer, this way people know names are OK to use, too.
It does work, doesn't it?
> +@end example
> +
> @item -netdev
> l2tpv3,id=@var{id},src=@var{srcaddr},dst=@var{dstaddr}[,srcport=@var{srcport}][,dstport=@var{dstport}],txsession=@var{txsession}[,rxsession=@var{rxsession}][,ipv6][,udp][,cookie64][,counter][,pincounter][,txcookie=@var{txcookie}][,rxcookie=@var{rxcookie}][,offset=@var{offset}]
> @itemx -net
> l2tpv3[,vlan=@var{n}][,name=@var{name}],src=@var{srcaddr},dst=@var{dstaddr}[,srcport=@var{srcport}][,dstport=@var{dstport}],txsession=@var{txsession}[,rxsession=@var{rxsession}][,ipv6][,udp][,cookie64][,counter][,pincounter][,txcookie=@var{txcookie}][,rxcookie=@var{rxcookie}][,offset=@var{offset}]
> Connect VLAN @var{n} to L2TPv3 pseudowire. L2TPv3 (RFC3391) is a popular
> --
> --Victor
