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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 
42 struct tipc_node;
43 struct tipc_msg;
44 struct tipc_nl_msg;
45 struct tipc_node_map;
46 extern const char tipc_bclink_name[];
47 
48 int tipc_bcast_init(struct net *net);
49 void tipc_bcast_stop(struct net *net);
50 void tipc_bcast_add_peer(struct net *net, struct tipc_link *l,
51 			 struct sk_buff_head *xmitq);
52 void tipc_bcast_remove_peer(struct net *net, struct tipc_link *rcv_bcl);
53 void tipc_bcast_inc_bearer_dst_cnt(struct net *net, int bearer_id);
54 void tipc_bcast_dec_bearer_dst_cnt(struct net *net, int bearer_id);
55 int  tipc_bcast_get_mtu(struct net *net);
56 int tipc_bcast_xmit(struct net *net, struct sk_buff_head *list);
57 int tipc_bcast_rcv(struct net *net, struct tipc_link *l, struct sk_buff *skb);
58 void tipc_bcast_ack_rcv(struct net *net, struct tipc_link *l,
59 			struct tipc_msg *hdr);
60 int tipc_bcast_sync_rcv(struct net *net, struct tipc_link *l,
61 			struct tipc_msg *hdr);
62 int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg);
63 int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]);
64 int tipc_bclink_reset_stats(struct net *net);
65 
tipc_bcast_lock(struct net * net)66 static inline void tipc_bcast_lock(struct net *net)
67 {
68 	spin_lock_bh(&tipc_net(net)->bclock);
69 }
70 
tipc_bcast_unlock(struct net * net)71 static inline void tipc_bcast_unlock(struct net *net)
72 {
73 	spin_unlock_bh(&tipc_net(net)->bclock);
74 }
75 
tipc_bc_sndlink(struct net * net)76 static inline struct tipc_link *tipc_bc_sndlink(struct net *net)
77 {
78 	return tipc_net(net)->bcl;
79 }
80 
81 #endif
82