gcc: Fix compile errors due to anonymous union initilization.

[cascardo/ovs.git] / lib / rtnetlink.h

diff --git a/lib/rtnetlink.h b/lib/rtnetlink.h
index 8d6f2bb..91ed486 100644 (file)
--- a/lib/rtnetlink.h
+++ b/lib/rtnetlink.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2015 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,46 +14,57 @@
  * limitations under the License.
  */
 
-#ifndef RTNETLINK_H
-#define RTNETLINK_H 1
+#ifndef RTNETLINK_LINK_H
+#define RTNETLINK_LINK_H 1
 
-/* These functions are Linux specific, so they should be used directly only by
- * Linux-specific code. */
+#include <stdbool.h>
+#include <stdint.h>
+#include <linux/if_ether.h>
 
-#include "list.h"
+#include "openvswitch/types.h"
 
-struct rtnetlink;
-struct nlattr;
 struct ofpbuf;
+struct nln_notifier;
 
-/* Function called to report rtnetlink notifications.  'change' describes the
- * specific change filled out by an rtnetlink_parse_func.  It may be null if
- * the buffer of change information overflowed, in which case the function must
- * assume that everything may have changed. 'aux' is as specified in
- * rtnetlink_notifier_register().
- */
-typedef void rtnetlink_notify_func(const void *change, void *aux);
+/* These functions are Linux specific, so they should be used directly only by
+ * Linux-specific code. */
 
-/* Function called to parse incoming rtnetlink notifications.  The 'buf'
- * message should be parsed into 'change' as specified in rtnetlink_create().
+/* A digested version of an rtnetlink_link message sent down by the kernel to
+ * indicate that a network device's status (link or address) has been changed.
  */
-typedef bool rtnetlink_parse_func(struct ofpbuf *buf, void *change);
+struct rtnetlink_change {
+    /* Copied from struct nlmsghdr. */
+    int nlmsg_type;             /* e.g. RTM_NEWLINK, RTM_DELLINK. */
+
+    /* Common attributes. */
+    int if_index;               /* Index of network device. */
+    const char *ifname;         /* Name of network device. */
 
-struct rtnetlink_notifier {
-    struct list node;
-    rtnetlink_notify_func *cb;
-    void *aux;
+    /* Network device link status. */
+    int master_ifindex;         /* Ifindex of datapath master (0 if none). */
+    int mtu;                    /* Current MTU. */
+    struct eth_addr mac;
+    unsigned int ifi_flags;     /* Flags of network device. */
+
+    /* Network device address status. */
+    /* xxx To be added when needed. */
 };
 
-struct rtnetlink *rtnetlink_create(int multicast_group,
-                                   rtnetlink_parse_func *,
-                                   void *change);
-void rtnetlink_destroy(struct rtnetlink *rtn);
-int rtnetlink_notifier_register(struct rtnetlink *,
-                                struct rtnetlink_notifier *,
-                                rtnetlink_notify_func *, void *aux);
-void rtnetlink_notifier_unregister(struct rtnetlink *,
-                                   struct rtnetlink_notifier *);
-void rtnetlink_notifier_run(struct rtnetlink *);
-void rtnetlink_notifier_wait(struct rtnetlink *);
+/* Function called to report that a netdev has changed.  'change' describes the
+ * specific change.  It may be null if the buffer of change information
+ * overflowed, in which case the function must assume that every device may
+ * have changed.  'aux' is as specified in the call to
+ * rtnetlink_notifier_register().  */
+typedef
+void rtnetlink_notify_func(const struct rtnetlink_change *change,
+                           void *aux);
+
+bool rtnetlink_type_is_rtnlgrp_link(uint16_t type);
+bool rtnetlink_type_is_rtnlgrp_addr(uint16_t type);
+bool rtnetlink_parse(struct ofpbuf *buf, struct rtnetlink_change *change);
+struct nln_notifier *
+rtnetlink_notifier_create(rtnetlink_notify_func *, void *aux);
+void rtnetlink_notifier_destroy(struct nln_notifier *);
+void rtnetlink_run(void);
+void rtnetlink_wait(void);
 #endif /* rtnetlink.h */