1 /*
2  * net/tipc/group.h: Include file for TIPC group unicast/multicast functions
3  *
4  * Copyright (c) 2017, Ericsson AB
5  * Copyright (c) 2020, Red Hat Inc
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_GROUP_H
38 #define _TIPC_GROUP_H
39 
40 #include "core.h"
41 
42 struct tipc_group;
43 struct tipc_member;
44 struct tipc_msg;
45 
46 struct tipc_group *tipc_group_create(struct net *net, u32 portid,
47 				     struct tipc_group_req *mreq,
48 				     bool *group_is_open);
49 void tipc_group_join(struct net *net, struct tipc_group *grp, int *sk_rcv_buf);
50 void tipc_group_delete(struct net *net, struct tipc_group *grp);
51 void tipc_group_add_member(struct tipc_group *grp, u32 node,
52 			   u32 port, u32 instance);
53 struct tipc_nlist *tipc_group_dests(struct tipc_group *grp);
54 void tipc_group_self(struct tipc_group *grp, struct tipc_service_range *seq,
55 		     int *scope);
56 u32 tipc_group_exclude(struct tipc_group *grp);
57 void tipc_group_filter_msg(struct tipc_group *grp,
58 			   struct sk_buff_head *inputq,
59 			   struct sk_buff_head *xmitq);
60 void tipc_group_member_evt(struct tipc_group *grp, bool *wakeup,
61 			   int *sk_rcvbuf, struct tipc_msg *hdr,
62 			   struct sk_buff_head *inputq,
63 			   struct sk_buff_head *xmitq);
64 void tipc_group_proto_rcv(struct tipc_group *grp, bool *wakeup,
65 			  struct tipc_msg *hdr,
66 			  struct sk_buff_head *inputq,
67 			  struct sk_buff_head *xmitq);
68 void tipc_group_update_bc_members(struct tipc_group *grp, int len, bool ack);
69 bool tipc_group_cong(struct tipc_group *grp, u32 dnode, u32 dport,
70 		     int len, struct tipc_member **m);
71 bool tipc_group_bc_cong(struct tipc_group *grp, int len);
72 void tipc_group_update_rcv_win(struct tipc_group *grp, int blks, u32 node,
73 			       u32 port, struct sk_buff_head *xmitq);
74 u16 tipc_group_bc_snd_nxt(struct tipc_group *grp);
75 void tipc_group_update_member(struct tipc_member *m, int len);
76 int tipc_group_fill_sock_diag(struct tipc_group *grp, struct sk_buff *skb);
77 #endif
78