net/tipc/bcast.h

   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 #define MAX_NODES 4096
  41 #define WSIZE 32
  42 #define TIPC_BCLINK_RESET 1
  43
  44 /**
  45  * struct tipc_node_map - set of node identifiers
  46  * @count: # of nodes in set
  47  * @map: bitmap of node identifiers that are in the set
  48  */
  49 struct tipc_node_map {
  50         u32 count;
  51         u32 map[MAX_NODES / WSIZE];
  52 };
  53
  54 #define PLSIZE 32
  55
  56 /**
  57  * struct tipc_port_list - set of node local destination ports
  58  * @count: # of ports in set (only valid for first entry in list)
  59  * @next: pointer to next entry in list
  60  * @ports: array of port references
  61  */
  62 struct tipc_port_list {
  63         int count;
  64         struct tipc_port_list *next;
  65         u32 ports[PLSIZE];
  66 };
  67
  68
  69 struct tipc_node;
  70
  71 extern const char tipc_bclink_name[];
  72
  73 /**
  74  * tipc_nmap_equal - test for equality of node maps
  75  */
  76 static inline int tipc_nmap_equal(struct tipc_node_map *nm_a,
  77                                   struct tipc_node_map *nm_b)
  78 {
  79         return !memcmp(nm_a, nm_b, sizeof(*nm_a));
  80 }
  81
  82 void tipc_port_list_add(struct tipc_port_list *pl_ptr, u32 port);
  83 void tipc_port_list_free(struct tipc_port_list *pl_ptr);
  84
  85 int tipc_bclink_init(void);
  86 void tipc_bclink_stop(void);
  87 void tipc_bclink_set_flags(unsigned int flags);
  88 void tipc_bclink_add_node(u32 addr);
  89 void tipc_bclink_remove_node(u32 addr);
  90 struct tipc_node *tipc_bclink_retransmit_to(void);
  91 void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked);
  92 void tipc_bclink_rcv(struct sk_buff *buf);
  93 u32  tipc_bclink_get_last_sent(void);
  94 u32  tipc_bclink_acks_missing(struct tipc_node *n_ptr);
  95 void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent);
  96 int  tipc_bclink_stats(char *stats_buf, const u32 buf_size);
  97 int  tipc_bclink_reset_stats(void);
  98 int  tipc_bclink_set_queue_limits(u32 limit);
  99 void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action);
 100 uint  tipc_bclink_get_mtu(void);
 101 int tipc_bclink_xmit(struct sk_buff *buf);
 102 void tipc_bclink_wakeup_users(void);
 103 #endif