netdev: Pass 'netdev_class' to ->run() and ->wait().

This will allow run() and wait() methods to be shared between different
classes and still perform class-specific work.

Signed-off-by: Daniele Di Proietto <diproiettod@vmware.com>
Acked-by: Ben Pfaff <blp@ovn.org>

lib/netdev-bsd.c

@@ -146,7 +146,7 @@ static void ifr_set_flags(struct ifreq *, int flags);
 static int af_link_ioctl(unsigned long command, const void *arg);
 #endif
 
-static void netdev_bsd_run(void);
+static void netdev_bsd_run(const struct netdev_class *);
 static int netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup);
 
 static bool
@@ -180,7 +180,7 @@ netdev_get_kernel_name(const struct netdev *netdev)
  * interface status changes, and eventually calls all the user callbacks.
  */
 static void
-netdev_bsd_run(void)
+netdev_bsd_run(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     rtbsd_notifier_run();
 }
@@ -190,7 +190,7 @@ netdev_bsd_run(void)
  * be called.
  */
 static void
-netdev_bsd_wait(void)
+netdev_bsd_wait(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     rtbsd_notifier_wait();
 }

lib/netdev-dummy.c

@@ -622,7 +622,7 @@ dummy_netdev_get_conn_state(struct dummy_packet_conn *conn)
 }
 
 static void
-netdev_dummy_run(void)
+netdev_dummy_run(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     struct netdev_dummy *dev;
 
@@ -636,7 +636,7 @@ netdev_dummy_run(void)
 }
 
 static void
-netdev_dummy_wait(void)
+netdev_dummy_wait(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     struct netdev_dummy *dev;
 

lib/netdev-linux.c

@@ -526,7 +526,7 @@ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
  * changes in the device miimon status, so we can use atomic_count. */
 static atomic_count miimon_cnt = ATOMIC_COUNT_INIT(0);
 
-static void netdev_linux_run(void);
+static void netdev_linux_run(const struct netdev_class *);
 
 static int netdev_linux_do_ethtool(const char *name, struct ethtool_cmd *,
                                    int cmd, const char *cmd_name);
@@ -623,7 +623,7 @@ netdev_linux_miimon_enabled(void)
 }
 
 static void
-netdev_linux_run(void)
+netdev_linux_run(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     struct nl_sock *sock;
     int error;
@@ -697,7 +697,7 @@ netdev_linux_run(void)
 }
 
 static void
-netdev_linux_wait(void)
+netdev_linux_wait(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     struct nl_sock *sock;
 

lib/netdev-provider.h

@@ -236,15 +236,21 @@ struct netdev_class {
     int (*init)(void);
 
     /* Performs periodic work needed by netdevs of this class.  May be null if
-     * no periodic work is necessary. */
-    void (*run)(void);
+     * no periodic work is necessary.
+     *
+     * 'netdev_class' points to the class.  It is useful in case the same
+     * function is used to implement different classes. */
+    void (*run)(const struct netdev_class *netdev_class);
 
     /* Arranges for poll_block() to wake up if the "run" member function needs
      * to be called.  Implementations are additionally required to wake
      * whenever something changes in any of its netdevs which would cause their
      * ->change_seq() function to change its result.  May be null if nothing is
-     * needed here. */
-    void (*wait)(void);
+     * needed here.
+     *
+     * 'netdev_class' points to the class.  It is useful in case the same
+     * function is used to implement different classes. */
+    void (*wait)(const struct netdev_class *netdev_class);
 
 /* ## ---------------- ## */
 /* ## netdev Functions ## */

lib/netdev-vport.c

@@ -312,7 +312,7 @@ netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED,
 }
 
 static void
-netdev_vport_run(void)
+netdev_vport_run(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     uint64_t seq;
 
@@ -325,7 +325,7 @@ netdev_vport_run(void)
 }
 
 static void
-netdev_vport_wait(void)
+netdev_vport_wait(const struct netdev_class *netdev_class OVS_UNUSED)
 {
     uint64_t seq;
 

lib/netdev.c

@@ -160,7 +160,7 @@ netdev_run(void)
     struct netdev_registered_class *rc;
     CMAP_FOR_EACH (rc, cmap_node, &netdev_classes) {
         if (rc->class->run) {
-            rc->class->run();
+            rc->class->run(rc->class);
         }
     }
 }
@@ -178,7 +178,7 @@ netdev_wait(void)
     struct netdev_registered_class *rc;
     CMAP_FOR_EACH (rc, cmap_node, &netdev_classes) {
         if (rc->class->wait) {
-            rc->class->wait();
+            rc->class->wait(rc->class);
         }
     }
 }