X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fnetdev-vport.c;h=28a1bfb49eaf38ed350f97655f938ecb7726844d;hb=9d9a0a0452a957472b0f3a9c132aea19cfb4e568;hp=3067323671a1a7e87cd286214a385da56143c8f3;hpb=b2fda3effc787f265b5ad5dfa967ac00627bd075;p=openvswitch

diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c
index 30673236..28a1bfb4 100644
--- a/lib/netdev-vport.c
+++ b/lib/netdev-vport.c
@@ -48,17 +48,12 @@
 
 VLOG_DEFINE_THIS_MODULE(netdev_vport);
 
-struct netdev_vport_notifier {
-    struct netdev_notifier notifier;
-    struct list list_node;
-    struct shash_node *shash_node;
-};
-
 struct netdev_dev_vport {
     struct netdev_dev netdev_dev;
     struct ofpbuf *options;
     int dp_ifindex;             /* -1 if unknown. */
     uint32_t port_no;           /* UINT32_MAX if unknown. */
+    unsigned int change_seq;
 };
 
 struct netdev_vport {
@@ -75,9 +70,6 @@ struct vport_class {
                           struct shash *args);
 };
 
-static struct shash netdev_vport_notifiers =
-                                    SHASH_INITIALIZER(&netdev_vport_notifiers);
-
 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
 
 static int netdev_vport_create(const struct netdev_class *, const char *,
@@ -242,6 +234,7 @@ netdev_vport_create(const struct netdev_class *netdev_class, const char *name,
         dev->options = options;
         dev->dp_ifindex = dp_ifindex;
         dev->port_no = port_no;
+        dev->change_seq = 1;
 
         *netdev_devp = &dev->netdev_dev;
         route_table_register();
@@ -485,57 +478,10 @@ netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED,
     return 0;
 }
 
-static char *
-make_poll_name(const struct netdev *netdev)
-{
-    return xasprintf("%s:%s", netdev_get_type(netdev), netdev_get_name(netdev));
-}
-
-static int
-netdev_vport_poll_add(struct netdev *netdev,
-                      void (*cb)(struct netdev_notifier *), void *aux,
-                      struct netdev_notifier **notifierp)
-{
-    char *poll_name = make_poll_name(netdev);
-    struct netdev_vport_notifier *notifier;
-    struct list *list;
-    struct shash_node *shash_node;
-
-    shash_node = shash_find(&netdev_vport_notifiers, poll_name);
-    if (!shash_node) {
-        list = xmalloc(sizeof *list);
-        list_init(list);
-        shash_node = shash_add(&netdev_vport_notifiers, poll_name, list);
-    } else {
-        list = shash_node->data;
-    }
-
-    notifier = xmalloc(sizeof *notifier);
-    netdev_notifier_init(&notifier->notifier, netdev, cb, aux);
-    list_push_back(list, &notifier->list_node);
-    notifier->shash_node = shash_node;
-
-    *notifierp = &notifier->notifier;
-    free(poll_name);
-
-    return 0;
-}
-
-static void
-netdev_vport_poll_remove(struct netdev_notifier *notifier_)
+static unsigned int
+netdev_vport_change_seq(const struct netdev *netdev)
 {
-    struct netdev_vport_notifier *notifier =
-                CONTAINER_OF(notifier_, struct netdev_vport_notifier, notifier);
-
-    struct list *list;
-
-    list = list_remove(&notifier->list_node);
-    if (list_is_empty(list)) {
-        shash_delete(&netdev_vport_notifiers, notifier->shash_node);
-        free(list);
-    }
-
-    free(notifier);
+    return netdev_dev_vport_cast(netdev_get_dev(netdev))->change_seq;
 }
 
 static void
@@ -578,20 +524,14 @@ netdev_vport_get_tnl_iface(const struct netdev *netdev)
 static void
 netdev_vport_poll_notify(const struct netdev *netdev)
 {
-    char *poll_name = make_poll_name(netdev);
-    struct list *list = shash_find_data(&netdev_vport_notifiers,
-                                        poll_name);
+    struct netdev_dev_vport *ndv;
 
-    if (list) {
-        struct netdev_vport_notifier *notifier;
+    ndv = netdev_dev_vport_cast(netdev_get_dev(netdev));
 
-        LIST_FOR_EACH (notifier, list_node, list) {
-            struct netdev_notifier *n = &notifier->notifier;
-            n->cb(n);
-        }
+    ndv->change_seq++;
+    if (!ndv->change_seq) {
+        ndv->change_seq++;
     }
-
-    free(poll_name);
 }
 
 /* Code specific to individual vport types. */
@@ -985,8 +925,7 @@ unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED,
                                                             \
     netdev_vport_update_flags,                              \
                                                             \
-    netdev_vport_poll_add,                                  \
-    netdev_vport_poll_remove,
+    netdev_vport_change_seq
 
 void
 netdev_vport_register(void)