[Xen-devel] [PATCH 23 of 29 RFC] libxl: add libxl__parse_nic_hotplug_path

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

# HG changeset patch
# User Roger Pau Monne <roger.pau@xxxxxxxxxxxxx>
# Date 1328179333 -3600
# Node ID 2708343292be6facb6a2d8aaf9a9d95afa61b7f6
# Parent  478459fa6bfce280bf31e1d971c5f2b39eee6986
libxl: add libxl__parse_nic_hotplug_path

Create a libxl_device_nic from hotplug xenstore information.

Signed-off-by: Roger Pau Monne <roger.pau@xxxxxxxxxxxxx>

diff -r 478459fa6bfc -r 2708343292be tools/libxl/libxl_device.c
--- a/tools/libxl/libxl_device.c        Thu Feb 02 11:39:24 2012 +0100
+++ b/tools/libxl/libxl_device.c        Thu Feb 02 11:42:13 2012 +0100
@@ -123,6 +123,56 @@ int libxl__parse_disk_hotplug_path(libxl
     return 0;
 }
 
+int libxl__parse_nic_hotplug_path(libxl__gc *gc,
+                                  const char *path,
+                                  libxl_device_nic *nic)
+{
+    libxl_ctx *ctx = libxl__gc_owner(gc);
+    char *value;
+
+    if (sscanf(path, "/hotplug/%*u/%*u/vif/%d", &nic->devid) != 1) {
+        LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Unable to get nic device id from "
+                                          "%s", path);
+        return -1;
+    }
+
+    value = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", path,
+                                                            "mtu"));
+    if (value)
+        nic->mtu = atoi(value);
+
+    nic->model = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", path,
+                                                                 "model"));
+
+    value = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", path,
+                                                            "mac"));
+    if (value) {
+        if (sscanf(value, LIBXL_MAC_FMT, LIBXL_MAC_BYTES(&nic->mac)) != 6) {
+            LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Unable to parse mac %s", value);
+            return -1;
+        }
+    }
+
+    nic->ip = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", path,
+                                                              "ip"));
+
+    nic->bridge = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", 
path,
+                                                                  "bridge"));
+    nic->ifname = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", 
path,
+                                                                  "ifname"));
+
+    nic->script = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", 
path,
+                                                                  "script"));
+
+    value = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", path,
+                                                            "nictype"));
+    if (value)
+        nic->nictype = atoi(value);
+
+    return 0;
+}
+
+
 int libxl__device_generic_add(libxl__gc *gc, libxl__device *device,
                              char **bents, char **fents)
 {
diff -r 478459fa6bfc -r 2708343292be tools/libxl/libxl_internal.h
--- a/tools/libxl/libxl_internal.h      Thu Feb 02 11:39:24 2012 +0100
+++ b/tools/libxl/libxl_internal.h      Thu Feb 02 11:42:13 2012 +0100
@@ -313,6 +313,9 @@ typedef struct {
 _hidden int libxl__parse_disk_hotplug_path(libxl__gc *gc,
                                            const char *path,
                                            libxl_device_disk *disk);
+_hidden int libxl__parse_nic_hotplug_path(libxl__gc *gc,
+                                          const char *path,
+                                          libxl_device_nic *nic);
 _hidden int libxl__device_remove(libxl__gc *gc, libxl__device *dev);
 _hidden int libxl__device_destroy(libxl__gc *gc, libxl__device *dev);
 _hidden int libxl__devices_destroy(libxl__gc *gc, uint32_t domid);

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