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1/*
2 * net/tipc/bcast.h: Include file for TIPC broadcast code
3 *
4 * Copyright (c) 2003-2006, 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#define MAX_NODES 4096
41#define WSIZE 32
42
43/**
44 * struct tipc_node_map - set of node identifiers
45 * @count: # of nodes in set
46 * @map: bitmap of node identifiers that are in the set
47 */
48struct tipc_node_map {
49 u32 count;
50 u32 map[MAX_NODES / WSIZE];
51};
52
53#define PLSIZE 32
54
55/**
56 * struct tipc_port_list - set of node local destination ports
57 * @count: # of ports in set (only valid for first entry in list)
58 * @next: pointer to next entry in list
59 * @ports: array of port references
60 */
61struct tipc_port_list {
62 int count;
63 struct tipc_port_list *next;
64 u32 ports[PLSIZE];
65};
66
67
68struct tipc_node;
69
70extern const char tipc_bclink_name[];
71
72void tipc_nmap_add(struct tipc_node_map *nm_ptr, u32 node);
73void tipc_nmap_remove(struct tipc_node_map *nm_ptr, u32 node);
74
75/**
76 * tipc_nmap_equal - test for equality of node maps
77 */
78static inline int tipc_nmap_equal(struct tipc_node_map *nm_a,
79 struct tipc_node_map *nm_b)
80{
81 return !memcmp(nm_a, nm_b, sizeof(*nm_a));
82}
83
84void tipc_port_list_add(struct tipc_port_list *pl_ptr, u32 port);
85void tipc_port_list_free(struct tipc_port_list *pl_ptr);
86
87void tipc_bclink_init(void);
88void tipc_bclink_stop(void);
89void tipc_bclink_add_node(u32 addr);
90void tipc_bclink_remove_node(u32 addr);
91struct tipc_node *tipc_bclink_retransmit_to(void);
92void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked);
93int tipc_bclink_xmit(struct sk_buff *buf);
94void tipc_bclink_rcv(struct sk_buff *buf);
95u32 tipc_bclink_get_last_sent(void);
96u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr);
97void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent);
98int tipc_bclink_stats(char *stats_buf, const u32 buf_size);
99int tipc_bclink_reset_stats(void);
100int tipc_bclink_set_queue_limits(u32 limit);
101void tipc_bcbearer_sort(void);
102
103#endif
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[];
48extern unsigned long sysctl_tipc_bc_retruni;
49
50#define TIPC_METHOD_EXPIRE msecs_to_jiffies(5000)
51
52#define BCLINK_MODE_BCAST 0x1
53#define BCLINK_MODE_RCAST 0x2
54#define BCLINK_MODE_SEL 0x4
55
56struct tipc_nlist {
57 struct list_head list;
58 u32 self;
59 u16 remote;
60 bool local;
61};
62
63void tipc_nlist_init(struct tipc_nlist *nl, u32 self);
64void tipc_nlist_purge(struct tipc_nlist *nl);
65void tipc_nlist_add(struct tipc_nlist *nl, u32 node);
66void tipc_nlist_del(struct tipc_nlist *nl, u32 node);
67
68/* Cookie to be used between socket and broadcast layer
69 * @rcast: replicast (instead of broadcast) was used at previous xmit
70 * @mandatory: broadcast/replicast indication was set by user
71 * @deferredq: defer queue to make message in order
72 * @expires: re-evaluate non-mandatory transmit method if we are past this
73 */
74struct tipc_mc_method {
75 bool rcast;
76 bool mandatory;
77 struct sk_buff_head deferredq;
78 unsigned long expires;
79};
80
81int tipc_bcast_init(struct net *net);
82void tipc_bcast_stop(struct net *net);
83void tipc_bcast_add_peer(struct net *net, struct tipc_link *l,
84 struct sk_buff_head *xmitq);
85void tipc_bcast_remove_peer(struct net *net, struct tipc_link *rcv_bcl);
86void tipc_bcast_inc_bearer_dst_cnt(struct net *net, int bearer_id);
87void tipc_bcast_dec_bearer_dst_cnt(struct net *net, int bearer_id);
88int tipc_bcast_get_mtu(struct net *net);
89void tipc_bcast_toggle_rcast(struct net *net, bool supp);
90int tipc_mcast_xmit(struct net *net, struct sk_buff_head *pkts,
91 struct tipc_mc_method *method, struct tipc_nlist *dests,
92 u16 *cong_link_cnt);
93int tipc_bcast_xmit(struct net *net, struct sk_buff_head *pkts,
94 u16 *cong_link_cnt);
95int tipc_bcast_rcv(struct net *net, struct tipc_link *l, struct sk_buff *skb);
96void tipc_bcast_ack_rcv(struct net *net, struct tipc_link *l,
97 struct tipc_msg *hdr);
98int tipc_bcast_sync_rcv(struct net *net, struct tipc_link *l,
99 struct tipc_msg *hdr,
100 struct sk_buff_head *retrq);
101int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg,
102 struct tipc_link *bcl);
103int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]);
104int tipc_bclink_reset_stats(struct net *net, struct tipc_link *l);
105
106u32 tipc_bcast_get_mode(struct net *net);
107u32 tipc_bcast_get_broadcast_ratio(struct net *net);
108
109void tipc_mcast_filter_msg(struct net *net, struct sk_buff_head *defq,
110 struct sk_buff_head *inputq);
111
112static inline void tipc_bcast_lock(struct net *net)
113{
114 spin_lock_bh(&tipc_net(net)->bclock);
115}
116
117static inline void tipc_bcast_unlock(struct net *net)
118{
119 spin_unlock_bh(&tipc_net(net)->bclock);
120}
121
122static inline struct tipc_link *tipc_bc_sndlink(struct net *net)
123{
124 return tipc_net(net)->bcl;
125}
126
127#endif