X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fnetdev.c;h=e77fcdfa30b3c965545646e908542b28a49b1610;hb=6a542738b2a59f98831fa36e6208d388c007d0b8;hp=0074de025a4438da2d5933a0d218ffae2cc341fd;hpb=a75531e53e03d9fe9915f8041759601c07e47914;p=openvswitch

diff --git a/lib/netdev.c b/lib/netdev.c
index 0074de02..e77fcdfa 100644
--- a/lib/netdev.c
+++ b/lib/netdev.c
@@ -332,33 +332,6 @@ netdev_is_open(const char *name)
     return !!shash_find_data(&netdev_dev_shash, name);
 }
 
-/*  Clears 'sset' and enumerates the names of all known network devices. */
-int
-netdev_enumerate(struct sset *sset)
-{
-    struct shash_node *node;
-    int error = 0;
-
-    netdev_initialize();
-    sset_clear(sset);
-
-    SHASH_FOR_EACH(node, &netdev_classes) {
-        const struct netdev_class *netdev_class = node->data;
-        if (netdev_class->enumerate) {
-            int retval = netdev_class->enumerate(sset);
-            if (retval) {
-                VLOG_WARN("failed to enumerate %s network devices: %s",
-                          netdev_class->type, strerror(retval));
-                if (!error) {
-                    error = retval;
-                }
-            }
-        }
-    }
-
-    return error;
-}
-
 /* Parses 'netdev_name_', which is of the form [type@]name into its component
  * pieces.  'name' and 'type' must be freed by the caller. */
 void
@@ -531,14 +504,21 @@ netdev_get_name(const struct netdev *netdev)
  *
  * If successful, returns 0 and stores the MTU size in '*mtup'.  Returns
  * EOPNOTSUPP if 'netdev' does not have an MTU (as e.g. some tunnels do not).
- * On other failure, returns a positive errno value. */
+ * On other failure, returns a positive errno value.  On failure, sets '*mtup'
+ * to 0. */
 int
 netdev_get_mtu(const struct netdev *netdev, int *mtup)
 {
-    int error = netdev_get_dev(netdev)->netdev_class->get_mtu(netdev, mtup);
-    if (error && error != EOPNOTSUPP) {
-        VLOG_WARN_RL(&rl, "failed to retrieve MTU for network device %s: %s",
-                     netdev_get_name(netdev), strerror(error));
+    const struct netdev_class *class = netdev_get_dev(netdev)->netdev_class;
+    int error;
+
+    error = class->get_mtu ? class->get_mtu(netdev, mtup) : EOPNOTSUPP;
+    if (error) {
+        *mtup = 0;
+        if (error != EOPNOTSUPP) {
+            VLOG_WARN_RL(&rl, "failed to retrieve MTU for network device %s: "
+                         "%s", netdev_get_name(netdev), strerror(error));
+        }
     }
     return error;
 }
@@ -552,8 +532,10 @@ netdev_get_mtu(const struct netdev *netdev, int *mtup)
 int
 netdev_set_mtu(const struct netdev *netdev, int mtu)
 {
-    int error = netdev_get_dev(netdev)->netdev_class->set_mtu(netdev, mtu);
+    const struct netdev_class *class = netdev_get_dev(netdev)->netdev_class;
+    int error;
 
+    error = class->set_mtu ? class->set_mtu(netdev, mtu) : EOPNOTSUPP;
     if (error && error != EOPNOTSUPP) {
         VLOG_WARN_RL(&rl, "failed to retrieve MTU for network device %s: %s",
                      netdev_get_name(netdev), strerror(error));
@@ -910,6 +892,15 @@ netdev_get_carrier(const struct netdev *netdev)
     return carrier;
 }
 
+/* Returns the number of times 'netdev''s carrier has changed. */
+long long int
+netdev_get_carrier_resets(const struct netdev *netdev)
+{
+    return (netdev_get_dev(netdev)->netdev_class->get_carrier_resets
+            ? netdev_get_dev(netdev)->netdev_class->get_carrier_resets(netdev)
+            : 0);
+}
+
 /* Attempts to force netdev_get_carrier() to poll 'netdev''s MII registers for
  * link status instead of checking 'netdev''s carrier.  'netdev''s MII
  * registers will be polled once ever 'interval' milliseconds.  If 'netdev'
@@ -1259,51 +1250,6 @@ netdev_change_seq(const struct netdev *netdev)
 {
     return netdev_get_dev(netdev)->netdev_class->change_seq(netdev);
 }
-
-/* If 'netdev' is a VLAN network device (e.g. one created with vconfig(8)),
- * sets '*vlan_vid' to the VLAN VID associated with that device and returns 0.
- * Otherwise returns a errno value (specifically ENOENT if 'netdev_name' is the
- * name of a network device that is not a VLAN device) and sets '*vlan_vid' to
- * -1. */
-int
-netdev_get_vlan_vid(const struct netdev *netdev, int *vlan_vid)
-{
-    int error = (netdev_get_dev(netdev)->netdev_class->get_vlan_vid
-                 ? netdev_get_dev(netdev)->netdev_class->get_vlan_vid(netdev,
-                        vlan_vid)
-                 : ENOENT);
-    if (error) {
-        *vlan_vid = 0;
-    }
-    return error;
-}
-
-/* Returns a network device that has 'in4' as its IP address, if one exists,
- * otherwise a null pointer. */
-struct netdev *
-netdev_find_dev_by_in4(const struct in_addr *in4)
-{
-    struct netdev *netdev;
-    struct sset dev_list = SSET_INITIALIZER(&dev_list);
-    const char *name;
-
-    netdev_enumerate(&dev_list);
-    SSET_FOR_EACH (name, &dev_list) {
-        struct in_addr dev_in4;
-
-        if (!netdev_open(name, "system", &netdev)
-            && !netdev_get_in4(netdev, &dev_in4, NULL)
-            && dev_in4.s_addr == in4->s_addr) {
-            goto exit;
-        }
-        netdev_close(netdev);
-    }
-    netdev = NULL;
-
-exit:
-    sset_destroy(&dev_list);
-    return netdev;
-}
 
 /* Initializes 'netdev_dev' as a netdev device named 'name' of the specified
  * 'netdev_class'.  This function is ordinarily called from a netdev provider's