net/tipc/bcast.h

   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, u32 acked);
  59 void tipc_bcast_sync_rcv(struct net *net, struct tipc_link *l,
  60                          struct tipc_msg *hdr);
  61 int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg);
  62 int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]);
  63 int tipc_bclink_reset_stats(struct net *net);
  64
  65 static inline void tipc_bcast_lock(struct net *net)
  66 {
  67         spin_lock_bh(&tipc_net(net)->bclock);
  68 }
  69
  70 static inline void tipc_bcast_unlock(struct net *net)
  71 {
  72         spin_unlock_bh(&tipc_net(net)->bclock);
  73 }
  74
  75 static inline struct tipc_link *tipc_bc_sndlink(struct net *net)
  76 {
  77         return tipc_net(net)->bcl;
  78 }
  79
  80 #endif