X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fnetdev-provider.h;h=9d8e67f3ad81968972deb914ac3df5c4e74883af;hb=28c5588e8e1a8d091c5d2275232c35f2968a97fa;hp=f233c0cb8e77ac3e8e6a01d28fce1550776dfa2b;hpb=55c955bd8aecc90273ffa93114c1c38f4f9b78ec;p=sliver-openvswitch.git

diff --git a/lib/netdev-provider.h b/lib/netdev-provider.h
index f233c0cb8..9d8e67f3a 100644
--- a/lib/netdev-provider.h
+++ b/lib/netdev-provider.h
@@ -19,8 +19,10 @@
 
 /* Generic interface to network devices. */
 
+#include "connectivity.h"
 #include "netdev.h"
 #include "list.h"
+#include "seq.h"
 #include "shash.h"
 #include "smap.h"
 
@@ -38,6 +40,14 @@ struct netdev {
     const struct netdev_class *netdev_class; /* Functions to control
                                                 this device. */
 
+    /* A sequence number which indicates changes in one of 'netdev''s
+     * properties.   It must be nonzero so that users have a value which
+     * they may use as a reset when tracking 'netdev'.
+     *
+     * Minimally, the sequence number is required to change whenever
+     * 'netdev''s flags, features, ethernet address, or carrier changes. */
+    uint64_t change_seq;
+
     /* The following are protected by 'netdev_mutex' (internal to netdev.c). */
     int n_rxq;
     int ref_cnt;                        /* Times this devices was opened. */
@@ -45,6 +55,16 @@ struct netdev {
     struct list saved_flags_list; /* Contains "struct netdev_saved_flags". */
 };
 
+static void
+netdev_change_seq_changed(struct netdev *netdev)
+{
+    seq_change(connectivity_seq_get());
+    netdev->change_seq++;
+    if (!netdev->change_seq) {
+        netdev->change_seq++;
+    }
+}
+
 const char *netdev_get_type(const struct netdev *);
 const struct netdev_class *netdev_get_class(const struct netdev *);
 const char *netdev_get_name(const struct netdev *);