| /* |
| * net/tipc/bcast.h: Include file for TIPC broadcast code |
| * |
| * Copyright (c) 2003-2006, 2014-2015, Ericsson AB |
| * Copyright (c) 2005, 2010-2011, Wind River Systems |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the names of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef _TIPC_BCAST_H |
| #define _TIPC_BCAST_H |
| |
| #include "core.h" |
| |
| struct tipc_node; |
| struct tipc_msg; |
| struct tipc_nl_msg; |
| struct tipc_nlist; |
| struct tipc_nitem; |
| extern const char tipc_bclink_name[]; |
| |
| #define TIPC_METHOD_EXPIRE msecs_to_jiffies(5000) |
| |
| #define BCLINK_MODE_BCAST 0x1 |
| #define BCLINK_MODE_RCAST 0x2 |
| #define BCLINK_MODE_SEL 0x4 |
| |
| struct tipc_nlist { |
| struct list_head list; |
| u32 self; |
| u16 remote; |
| bool local; |
| }; |
| |
| void tipc_nlist_init(struct tipc_nlist *nl, u32 self); |
| void tipc_nlist_purge(struct tipc_nlist *nl); |
| void tipc_nlist_add(struct tipc_nlist *nl, u32 node); |
| void tipc_nlist_del(struct tipc_nlist *nl, u32 node); |
| |
| /* Cookie to be used between socket and broadcast layer |
| * @rcast: replicast (instead of broadcast) was used at previous xmit |
| * @mandatory: broadcast/replicast indication was set by user |
| * @deferredq: defer queue to make message in order |
| * @expires: re-evaluate non-mandatory transmit method if we are past this |
| */ |
| struct tipc_mc_method { |
| bool rcast; |
| bool mandatory; |
| struct sk_buff_head deferredq; |
| unsigned long expires; |
| }; |
| |
| int tipc_bcast_init(struct net *net); |
| void tipc_bcast_stop(struct net *net); |
| void tipc_bcast_add_peer(struct net *net, struct tipc_link *l, |
| struct sk_buff_head *xmitq); |
| void tipc_bcast_remove_peer(struct net *net, struct tipc_link *rcv_bcl); |
| void tipc_bcast_inc_bearer_dst_cnt(struct net *net, int bearer_id); |
| void tipc_bcast_dec_bearer_dst_cnt(struct net *net, int bearer_id); |
| int tipc_bcast_get_mtu(struct net *net); |
| void tipc_bcast_toggle_rcast(struct net *net, bool supp); |
| int tipc_mcast_xmit(struct net *net, struct sk_buff_head *pkts, |
| struct tipc_mc_method *method, struct tipc_nlist *dests, |
| u16 *cong_link_cnt); |
| int tipc_bcast_rcv(struct net *net, struct tipc_link *l, struct sk_buff *skb); |
| void tipc_bcast_ack_rcv(struct net *net, struct tipc_link *l, |
| struct tipc_msg *hdr); |
| int tipc_bcast_sync_rcv(struct net *net, struct tipc_link *l, |
| struct tipc_msg *hdr); |
| int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg); |
| int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]); |
| int tipc_bclink_reset_stats(struct net *net); |
| |
| u32 tipc_bcast_get_broadcast_mode(struct net *net); |
| u32 tipc_bcast_get_broadcast_ratio(struct net *net); |
| |
| void tipc_mcast_filter_msg(struct net *net, struct sk_buff_head *defq, |
| struct sk_buff_head *inputq); |
| |
| static inline void tipc_bcast_lock(struct net *net) |
| { |
| spin_lock_bh(&tipc_net(net)->bclock); |
| } |
| |
| static inline void tipc_bcast_unlock(struct net *net) |
| { |
| spin_unlock_bh(&tipc_net(net)->bclock); |
| } |
| |
| static inline struct tipc_link *tipc_bc_sndlink(struct net *net) |
| { |
| return tipc_net(net)->bcl; |
| } |
| |
| #endif |