[PATCH v11 09/17] libxl: set nic type of stub to PV instead of copying from the parent

[Roger Pau Monne <roger.pau@citrix.com>]

Introduce a new function used to copy the array of nics from the
parent guest to the stubdomain, and set the type of the nics used to
PV unconditianlly, or the call to setdefaults later is going to fail.

Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Ian Campbell <ian.campbell@eu.citrix.com>
Signed-off-by: Roger Pau Monne <roger.pau@citrix.com>
---
 tools/libxl/libxl_dm.c |   26 +++++++++++++++++++++++++-
 1 files changed, 25 insertions(+), 1 deletions(-)

diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index 9a2b247..aaabf1b 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -640,6 +640,27 @@ static int libxl__vfb_and_vkb_from_hvm_guest_config(libxl__gc *gc,
     return 0;
 }
 
+static int libxl__nics_from_hvm_guest_config(libxl__gc *gc,
+                                        const libxl_domain_config *guest_config,
+                                        libxl_device_nic *nic)
+{
+    const libxl_domain_build_info *b_info = &guest_config->b_info;
+    int i;
+
+    if (b_info->type != LIBXL_DOMAIN_TYPE_HVM)
+        return ERROR_INVAL;
+
+    for (i = 0; i < guest_config->num_nics; i++) {
+        libxl_device_nic_init(&nic[i]);
+        memcpy(&nic[i], &guest_config->nics[i], sizeof(nic[i]));
+        nic[i].nictype = LIBXL_NIC_TYPE_VIF;
+        nic[i].backend_domid = 0;
+        nic[i].devid = 0;
+    }
+
+    return 0;
+}
+
 static int libxl__write_stub_dmargs(libxl__gc *gc,
                                     int dm_domid, int guest_domid,
                                     char **args)
@@ -764,7 +785,10 @@ void libxl__spawn_stub_dm(libxl__egc *egc, libxl__stub_dm_spawn_state *sdss)
     dm_config->disks = guest_config->disks;
     dm_config->num_disks = guest_config->num_disks;
 
-    dm_config->nics = guest_config->nics;
+    GCNEW_ARRAY(dm_config->nics,
+                guest_config->num_nics * sizeof(*dm_config->nics));
+    ret = libxl__nics_from_hvm_guest_config(gc, guest_config, dm_config->nics);
+    if (ret) goto out;
     dm_config->num_nics = guest_config->num_nics;
 
     dm_config->c_info.run_hotplug_scripts =
-- 
1.7.7.5 (Apple Git-26)