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2 * Copyright (c) 2009, 2015 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef RTNETLINK_LINK_H
18 #define RTNETLINK_LINK_H 1
22 #include <linux/if_ether.h>
24 #include "openvswitch/types.h"
29 /* These functions are Linux specific, so they should be used directly only by
30 * Linux-specific code. */
32 /* A digested version of an rtnetlink_link message sent down by the kernel to
33 * indicate that a network device's status (link or address) has been changed.
35 struct rtnetlink_change
{
36 /* Copied from struct nlmsghdr. */
37 int nlmsg_type
; /* e.g. RTM_NEWLINK, RTM_DELLINK. */
39 /* Common attributes. */
40 int if_index
; /* Index of network device. */
41 const char *ifname
; /* Name of network device. */
43 /* Network device link status. */
44 int master_ifindex
; /* Ifindex of datapath master (0 if none). */
45 int mtu
; /* Current MTU. */
47 unsigned int ifi_flags
; /* Flags of network device. */
49 /* Network device address status. */
50 /* xxx To be added when needed. */
52 /* Link bonding info. */
53 const char *primary
; /* Kind of primary (NULL if not primary). */
54 const char *sub
; /* Kind of subordinate (NULL if not sub). */
57 /* Function called to report that a netdev has changed. 'change' describes the
58 * specific change. It may be null if the buffer of change information
59 * overflowed, in which case the function must assume that every device may
60 * have changed. 'aux' is as specified in the call to
61 * rtnetlink_notifier_register(). */
63 void rtnetlink_notify_func(const struct rtnetlink_change
*change
,
66 bool rtnetlink_type_is_rtnlgrp_link(uint16_t type
);
67 bool rtnetlink_type_is_rtnlgrp_addr(uint16_t type
);
68 bool rtnetlink_parse(struct ofpbuf
*buf
, struct rtnetlink_change
*change
);
70 rtnetlink_notifier_create(rtnetlink_notify_func
*, void *aux
);
71 void rtnetlink_notifier_destroy(struct nln_notifier
*);
72 void rtnetlink_run(void);
73 void rtnetlink_wait(void);
74 void rtnetlink_report_link(void);
75 #endif /* rtnetlink.h */