[Xen-devel] [PATCH v9 12/17] libxl: set correct nic type depending on the guest

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Fix the use of nic type, which results in the following for each type
of domain:

 * HVM: let the user choose, if none specified use VIF_IOEMU.
 * HVM with stubdom: use VIF always.
 * PV: use VIF always.

Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Signed-off-by: Roger Pau Monne <roger.pau@xxxxxxxxxx>
---
 tools/libxl/libxl.c          |   22 ++++++++++++++++++----
 tools/libxl/libxl_create.c   |    2 +-
 tools/libxl/libxl_dm.c       |    2 +-
 tools/libxl/libxl_internal.h |    3 ++-
 4 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 98adbb0..08146de 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2353,7 +2353,8 @@ out:
 
 
/******************************************************************************/
 
-int libxl__device_nic_setdefault(libxl__gc *gc, libxl_device_nic *nic)
+int libxl__device_nic_setdefault(libxl__gc *gc, libxl_device_nic *nic,
+                                 uint32_t domid)
 {
     if (!nic->mtu)
         nic->mtu = 1492;
@@ -2383,8 +2384,21 @@ int libxl__device_nic_setdefault(libxl__gc *gc, 
libxl_device_nic *nic)
     if ( !nic->script && asprintf(&nic->script, "%s/vif-bridge",
                                   libxl__xen_script_dir_path()) < 0 )
         return ERROR_FAIL;
-    if (!nic->nictype)
-        nic->nictype = LIBXL_NIC_TYPE_VIF_IOEMU;
+
+    switch (libxl__domain_type(gc, domid)) {
+    case LIBXL_DOMAIN_TYPE_HVM:
+        if (libxl_get_stubdom_id(CTX, domid))
+            nic->nictype = LIBXL_NIC_TYPE_VIF;
+        else if (!nic->nictype)
+            nic->nictype = LIBXL_NIC_TYPE_VIF_IOEMU;
+        break;
+    case LIBXL_DOMAIN_TYPE_PV:
+        nic->nictype = LIBXL_NIC_TYPE_VIF;
+        break;
+    default:
+        abort();
+    }
+
     return 0;
 }
 
@@ -2412,7 +2426,7 @@ void libxl__device_nic_add(libxl__egc *egc, uint32_t 
domid,
     char *dompath, **l;
     unsigned int nb, rc;
 
-    rc = libxl__device_nic_setdefault(gc, nic);
+    rc = libxl__device_nic_setdefault(gc, nic, domid);
     if (rc) goto out;
 
     front = flexarray_make(16, 1);
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index d3dc038..7db9457 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -938,7 +938,7 @@ static void domcreate_launch_dm(libxl__egc *egc, 
libxl__ao_devices *aodevs,
          * called libxl_device_nic_add at this point, but qemu needs
          * the nic information to be complete.
          */
-        libxl__device_nic_setdefault(gc, &d_config->nics[i]);
+        libxl__device_nic_setdefault(gc, &d_config->nics[i], domid);
     }
     switch (d_config->c_info.type) {
     case LIBXL_DOMAIN_TYPE_HVM:
diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index f21fb4f..cbe518f 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -875,7 +875,7 @@ static void spawn_stub_launch_dm(libxl__egc *egc,
          * called libxl_device_nic_add at this point, but qemu needs
          * the nic information to be complete.
          */
-        libxl__device_nic_setdefault(gc, &dm_config->nics[i]);
+        libxl__device_nic_setdefault(gc, &dm_config->nics[i], dm_domid);
     }
     ret = libxl_device_vfb_add(ctx, dm_domid, &dm_config->vfbs[0]);
     if (ret)
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 31584b5..b8318cb 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -890,7 +890,8 @@ _hidden int libxl__domain_build_info_setdefault(libxl__gc 
*gc,
                                         libxl_domain_build_info *b_info);
 _hidden int libxl__device_disk_setdefault(libxl__gc *gc,
                                           libxl_device_disk *disk);
-_hidden int libxl__device_nic_setdefault(libxl__gc *gc, libxl_device_nic *nic);
+_hidden int libxl__device_nic_setdefault(libxl__gc *gc, libxl_device_nic *nic,
+                                         uint32_t domid);
 _hidden int libxl__device_vfb_setdefault(libxl__gc *gc, libxl_device_vfb *vfb);
 _hidden int libxl__device_vkb_setdefault(libxl__gc *gc, libxl_device_vkb *vkb);
 _hidden int libxl__device_pci_setdefault(libxl__gc *gc, libxl_device_pci *pci);
-- 
1.7.7.5 (Apple Git-26)


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