xl/libxl: add gatewaydev/netdev to vif specification

This option is used by the vif-route hotplug script. A new more
descriptive name is used, "gatewaydev", but "netdev" is also supported
as a deprecated backwards compatible option.

This option was supported in the past, according to
http://wiki.xen.org/wiki/Vif-route, so we should also support it in
libxl.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Tested-by: Ulf Kreutzberg <ulf.kreutzberg@hosteurope.de>
Cc: Ulf Kreutzberg <ulf.kreutzberg@hosteurope.de>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: George Dunlap <george.dunlap@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index a09c0fad68..572c2c6442 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2829,7 +2829,7 @@ void libxl__device_nic_add(libxl__egc *egc, uint32_t domid,
     if (rc) goto out;
 
     front = flexarray_make(gc, 16, 1);
-    back = flexarray_make(gc, 16, 1);
+    back = flexarray_make(gc, 18, 1);
 
     if (nic->devid == -1) {
         if ((nic->devid = libxl__device_nextid(gc, domid, "vif") < 0)) {
@@ -2865,6 +2865,10 @@ void libxl__device_nic_add(libxl__egc *egc, uint32_t domid,
         flexarray_append(back, "ip");
         flexarray_append(back, libxl__strdup(gc, nic->ip));
     }
+    if (nic->gatewaydev) {
+        flexarray_append(back, "gatewaydev");
+        flexarray_append(back, libxl__strdup(gc, nic->gatewaydev));
+    }
 
     if (nic->rate_interval_usecs > 0) {
         flexarray_append(back, "rate");