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Linux kernel mirror (for testing)
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1/*
2 * net/tipc/bcast.h: Include file for TIPC broadcast code
3 *
4 * Copyright (c) 2003-2006, 2014-2015, Ericsson AB
5 * Copyright (c) 2005, 2010-2011, Wind River Systems
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#ifndef _TIPC_BCAST_H
38#define _TIPC_BCAST_H
39
40#include "core.h"
41
42struct tipc_node;
43struct tipc_msg;
44struct tipc_nl_msg;
45struct tipc_nlist;
46struct tipc_nitem;
47extern const char tipc_bclink_name[];
48
49#define TIPC_METHOD_EXPIRE msecs_to_jiffies(5000)
50
51struct tipc_nlist {
52 struct list_head list;
53 u32 self;
54 u16 remote;
55 bool local;
56};
57
58void tipc_nlist_init(struct tipc_nlist *nl, u32 self);
59void tipc_nlist_purge(struct tipc_nlist *nl);
60void tipc_nlist_add(struct tipc_nlist *nl, u32 node);
61void tipc_nlist_del(struct tipc_nlist *nl, u32 node);
62
63/* Cookie to be used between socket and broadcast layer
64 * @rcast: replicast (instead of broadcast) was used at previous xmit
65 * @mandatory: broadcast/replicast indication was set by user
66 * @expires: re-evaluate non-mandatory transmit method if we are past this
67 */
68struct tipc_mc_method {
69 bool rcast;
70 bool mandatory;
71 unsigned long expires;
72};
73
74int tipc_bcast_init(struct net *net);
75void tipc_bcast_stop(struct net *net);
76void tipc_bcast_add_peer(struct net *net, struct tipc_link *l,
77 struct sk_buff_head *xmitq);
78void tipc_bcast_remove_peer(struct net *net, struct tipc_link *rcv_bcl);
79void tipc_bcast_inc_bearer_dst_cnt(struct net *net, int bearer_id);
80void tipc_bcast_dec_bearer_dst_cnt(struct net *net, int bearer_id);
81int tipc_bcast_get_mtu(struct net *net);
82void tipc_bcast_disable_rcast(struct net *net);
83int tipc_mcast_xmit(struct net *net, struct sk_buff_head *pkts,
84 struct tipc_mc_method *method, struct tipc_nlist *dests,
85 u16 *cong_link_cnt);
86int tipc_bcast_rcv(struct net *net, struct tipc_link *l, struct sk_buff *skb);
87void tipc_bcast_ack_rcv(struct net *net, struct tipc_link *l,
88 struct tipc_msg *hdr);
89int tipc_bcast_sync_rcv(struct net *net, struct tipc_link *l,
90 struct tipc_msg *hdr);
91int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg);
92int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]);
93int tipc_bclink_reset_stats(struct net *net);
94
95static inline void tipc_bcast_lock(struct net *net)
96{
97 spin_lock_bh(&tipc_net(net)->bclock);
98}
99
100static inline void tipc_bcast_unlock(struct net *net)
101{
102 spin_unlock_bh(&tipc_net(net)->bclock);
103}
104
105static inline struct tipc_link *tipc_bc_sndlink(struct net *net)
106{
107 return tipc_net(net)->bcl;
108}
109
110#endif