1 /* 2 * net/tipc/bcast.h: Include file for TIPC broadcast code 3 * 4 * Copyright (c) 2003-2006, 2014, 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 "netlink.h" 41 42 #define MAX_NODES 4096 43 #define WSIZE 32 44 #define TIPC_BCLINK_RESET 1 45 46 /** 47 * struct tipc_node_map - set of node identifiers 48 * @count: # of nodes in set 49 * @map: bitmap of node identifiers that are in the set 50 */ 51 struct tipc_node_map { 52 u32 count; 53 u32 map[MAX_NODES / WSIZE]; 54 }; 55 56 #define PLSIZE 32 57 58 /** 59 * struct tipc_port_list - set of node local destination ports 60 * @count: # of ports in set (only valid for first entry in list) 61 * @next: pointer to next entry in list 62 * @ports: array of port references 63 */ 64 struct tipc_port_list { 65 int count; 66 struct tipc_port_list *next; 67 u32 ports[PLSIZE]; 68 }; 69 70 71 struct tipc_node; 72 73 extern const char tipc_bclink_name[]; 74 75 /** 76 * tipc_nmap_equal - test for equality of node maps 77 */ 78 static 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 84 void tipc_port_list_add(struct tipc_port_list *pl_ptr, u32 port); 85 void tipc_port_list_free(struct tipc_port_list *pl_ptr); 86 87 int tipc_bclink_init(void); 88 void tipc_bclink_stop(void); 89 void tipc_bclink_set_flags(unsigned int flags); 90 void tipc_bclink_add_node(u32 addr); 91 void tipc_bclink_remove_node(u32 addr); 92 struct tipc_node *tipc_bclink_retransmit_to(void); 93 void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked); 94 void tipc_bclink_rcv(struct sk_buff *buf); 95 u32 tipc_bclink_get_last_sent(void); 96 u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr); 97 void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent); 98 int tipc_bclink_stats(char *stats_buf, const u32 buf_size); 99 int tipc_bclink_reset_stats(void); 100 int tipc_bclink_set_queue_limits(u32 limit); 101 void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action); 102 uint tipc_bclink_get_mtu(void); 103 int tipc_bclink_xmit(struct sk_buff_head *list); 104 void tipc_bclink_wakeup_users(void); 105 int tipc_nl_add_bc_link(struct tipc_nl_msg *msg); 106 107 #endif 108