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kvm tools: Introduce -net {user, tap, none} options for virtio net

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Use '-net user' to enable user model network, which enables plain user
without speical privileges to use network in guest.

Use '-net tap' to enable tap based network, which requres special
privileges.

Use '-net none' to disable virtio net.

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Asias He
2015-06-01 16:39:45 +01:00
committed by Will Deacon
parent 8626798b5d
commit ec7674d7f5
1 changed files with 18 additions and 14 deletions
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kvm-run.c
+18 -14
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@@ -154,7 +154,7 @@ static const struct option options[] = {
"Kernel command line arguments"),
OPT_GROUP("Networking options:"),
OPT_STRING('n', "network", &network, "virtio",
OPT_STRING('n', "network", &network, "user, tap, none",
"Network to use"),
OPT_STRING('\0', "host-ip-addr", &host_ip_addr, "a.b.c.d",
"Assign this address to the host side networking"),
@@ -629,20 +629,24 @@ int kvm_cmd_run(int argc, const char **argv, const char *prefix)
if (!network)
network = DEFAULT_NETWORK;
if (!strncmp(network, "virtio", 6)) {
net_params = (struct virtio_net_parameters) {
.host_ip = host_ip_addr,
.kvm = kvm,
.script = script
};
sscanf(guest_mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
net_params.guest_mac,
net_params.guest_mac+1,
net_params.guest_mac+2,
net_params.guest_mac+3,
net_params.guest_mac+4,
net_params.guest_mac+5);
if (strncmp(network, "none", 4)) {
net_params.host_ip = host_ip_addr;
net_params.kvm = kvm;
net_params.script = script;
sscanf(guest_mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
net_params.guest_mac,
net_params.guest_mac+1,
net_params.guest_mac+2,
net_params.guest_mac+3,
net_params.guest_mac+4,
net_params.guest_mac+5);
if (!strncmp(network, "user", 4))
net_params.mode = NET_MODE_USER;
else if (!strncmp(network, "tap", 3))
net_params.mode = NET_MODE_TAP;
else
die("Unkown network mode %s, please use -network user, tap, none", network);
virtio_net__init(&net_params);
}