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/*
* Copyright (c) 2009 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 NETLINK_NOTIFIER_H
#define NETLINK_NOTIFIER_H 1
/* These functions are Linux specific, so they should be used directly only by
* Linux-specific code. */
#include "openvswitch/list.h"
struct nln;
struct nln_notifier;
struct nlattr;
struct ofpbuf;
/* Function called to report netlink notifications. 'change' describes the
* specific change filled out by an nln_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
* nln_notifier_register(). */
typedef void nln_notify_func(const void *change, void *aux);
/* Function called to parse incoming nln notifications. The 'buf' message
* should be parsed into 'change' as specified in nln_create().
* Returns the multicast_group the change belongs to, or 0 for a parse error.
*/
typedef int nln_parse_func(struct ofpbuf *buf, void *change);
struct nln *nln_create(int protocol, nln_parse_func *, void *change);
void nln_destroy(struct nln *);
struct nln_notifier *nln_notifier_create(struct nln *, int multicast_group,
nln_notify_func *, void *aux);
void nln_notifier_destroy(struct nln_notifier *);
void nln_run(struct nln *);
void nln_wait(struct nln *);
void nln_report(const struct nln *nln, void *change, int group);
#endif /* netlink-notifier.h */
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