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/*
* 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.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef RTNETLINK_LINK_H
#define RTNETLINK_LINK_H 1
#include <stdbool.h>
#include <stdint.h>
#include <linux/if_ether.h>
#include "openvswitch/types.h"
struct ofpbuf;
struct nln_notifier;
/* These functions are Linux specific, so they should be used directly only by
* Linux-specific code. */
/* 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.
*/
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. */
/* 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. */
bool irrelevant; /* Some events, notably wireless extensions,
don't really indicate real netdev change
that OVS should care about. */
/* Network device address status. */
/* xxx To be added when needed. */
/* Link bonding info. */
const char *primary; /* Kind of primary (NULL if not primary). */
const char *sub; /* Kind of subordinate (NULL if not sub). */
};
/* 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);
void rtnetlink_report_link(void);
#endif /* rtnetlink.h */
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