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Diffstat (limited to '')
| -rw-r--r-- | net/tipc/bcast.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h new file mode 100644 index 000000000..2d9352dc7 --- /dev/null +++ b/net/tipc/bcast.h @@ -0,0 +1,127 @@ +/* + * 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[]; +extern unsigned long sysctl_tipc_bc_retruni; + +#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_xmit(struct net *net, struct sk_buff_head *pkts, + 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, + struct sk_buff_head *retrq); +int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg, + struct tipc_link *bcl); +int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]); +int tipc_bclink_reset_stats(struct net *net, struct tipc_link *l); + +u32 tipc_bcast_get_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 |