Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/node.h: Include file for TIPC node management routines |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 3 | * |
Per Liden | 593a5f2 | 2006-01-11 19:14:19 +0100 | [diff] [blame] | 4 | * Copyright (c) 2000-2006, Ericsson AB |
Allan Stephens | 672d99e | 2011-02-25 18:42:52 -0500 | [diff] [blame] | 5 | * Copyright (c) 2005, 2010-2011, Wind River Systems |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 6 | * All rights reserved. |
| 7 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 8 | * Redistribution and use in source and binary forms, with or without |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 9 | * modification, are permitted provided that the following conditions are met: |
| 10 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 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. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 19 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 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 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 34 | * POSSIBILITY OF SUCH DAMAGE. |
| 35 | */ |
| 36 | |
| 37 | #ifndef _TIPC_NODE_H |
| 38 | #define _TIPC_NODE_H |
| 39 | |
| 40 | #include "node_subscr.h" |
Allan Stephens | 8f92df6 | 2010-12-31 18:59:19 +0000 | [diff] [blame] | 41 | #include "addr.h" |
| 42 | #include "net.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 43 | #include "bearer.h" |
| 44 | |
Allan Stephens | fc0eea6 | 2011-10-28 16:26:41 -0400 | [diff] [blame] | 45 | /* |
| 46 | * Out-of-range value for node signature |
| 47 | */ |
| 48 | #define INVALID_NODE_SIG 0x10000 |
| 49 | |
Allan Stephens | b4b5610 | 2011-05-27 11:00:51 -0400 | [diff] [blame] | 50 | /* Flags used to block (re)establishment of contact with a neighboring node */ |
| 51 | |
| 52 | #define WAIT_PEER_DOWN 0x0001 /* wait to see that peer's links are down */ |
| 53 | #define WAIT_NAMES_GONE 0x0002 /* wait for peer's publications to be purged */ |
| 54 | #define WAIT_NODE_DOWN 0x0004 /* wait until peer node is declared down */ |
| 55 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 56 | /** |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 57 | * struct tipc_node - TIPC node structure |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 58 | * @addr: network address of node |
| 59 | * @lock: spinlock governing access to structure |
Allan Stephens | 672d99e | 2011-02-25 18:42:52 -0500 | [diff] [blame] | 60 | * @hash: links to adjacent nodes in unsorted hash chain |
| 61 | * @list: links to adjacent nodes in sorted list of cluster's nodes |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 62 | * @nsub: list of "node down" subscriptions monitoring node |
| 63 | * @active_links: pointers to active links to node |
| 64 | * @links: pointers to all links to node |
Allan Stephens | 5392d64 | 2006-06-25 23:52:50 -0700 | [diff] [blame] | 65 | * @working_links: number of working links to node (both active and standby) |
Allan Stephens | b4b5610 | 2011-05-27 11:00:51 -0400 | [diff] [blame] | 66 | * @block_setup: bit mask of conditions preventing link establishment to node |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 67 | * @link_cnt: number of links to node |
| 68 | * @permit_changeover: non-zero if node has redundant links to this system |
Allan Stephens | fc0eea6 | 2011-10-28 16:26:41 -0400 | [diff] [blame] | 69 | * @signature: node instance identifier |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 70 | * @bclink: broadcast-related info |
Allan Stephens | 9349931 | 2011-10-25 15:14:46 -0400 | [diff] [blame] | 71 | * @supportable: non-zero if node supports TIPC b'cast link capability |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 72 | * @supported: non-zero if node supports TIPC b'cast capability |
| 73 | * @acked: sequence # of last outbound b'cast message acknowledged by node |
| 74 | * @last_in: sequence # of last in-sequence b'cast message received from node |
Allan Stephens | 7a54d4a | 2011-10-27 14:17:53 -0400 | [diff] [blame] | 75 | * @last_sent: sequence # of last b'cast message sent by node |
| 76 | * @oos_state: state tracker for handling OOS b'cast messages |
| 77 | * @deferred_size: number of OOS b'cast messages in deferred queue |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 78 | * @deferred_head: oldest OOS b'cast message received from node |
| 79 | * @deferred_tail: newest OOS b'cast message received from node |
| 80 | * @defragm: list of partially reassembled b'cast message fragments from node |
| 81 | */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 82 | |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 83 | struct tipc_node { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 84 | u32 addr; |
| 85 | spinlock_t lock; |
Allan Stephens | 672d99e | 2011-02-25 18:42:52 -0500 | [diff] [blame] | 86 | struct hlist_node hash; |
| 87 | struct list_head list; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 88 | struct list_head nsub; |
Paul Gortmaker | a18c4bc | 2011-12-29 20:58:42 -0500 | [diff] [blame] | 89 | struct tipc_link *active_links[2]; |
| 90 | struct tipc_link *links[MAX_BEARERS]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 91 | int link_cnt; |
Allan Stephens | 5392d64 | 2006-06-25 23:52:50 -0700 | [diff] [blame] | 92 | int working_links; |
Allan Stephens | b4b5610 | 2011-05-27 11:00:51 -0400 | [diff] [blame] | 93 | int block_setup; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 94 | int permit_changeover; |
Allan Stephens | fc0eea6 | 2011-10-28 16:26:41 -0400 | [diff] [blame] | 95 | u32 signature; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 96 | struct { |
Allan Stephens | 9349931 | 2011-10-25 15:14:46 -0400 | [diff] [blame] | 97 | u8 supportable; |
| 98 | u8 supported; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 99 | u32 acked; |
| 100 | u32 last_in; |
Allan Stephens | 7a54d4a | 2011-10-27 14:17:53 -0400 | [diff] [blame] | 101 | u32 last_sent; |
| 102 | u32 oos_state; |
| 103 | u32 deferred_size; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 104 | struct sk_buff *deferred_head; |
| 105 | struct sk_buff *deferred_tail; |
| 106 | struct sk_buff *defragm; |
| 107 | } bclink; |
| 108 | }; |
| 109 | |
Allan Stephens | 672d99e | 2011-02-25 18:42:52 -0500 | [diff] [blame] | 110 | extern struct list_head tipc_node_list; |
| 111 | |
Allan Stephens | 672d99e | 2011-02-25 18:42:52 -0500 | [diff] [blame] | 112 | struct tipc_node *tipc_node_find(u32 addr); |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 113 | struct tipc_node *tipc_node_create(u32 addr); |
| 114 | void tipc_node_delete(struct tipc_node *n_ptr); |
Paul Gortmaker | a18c4bc | 2011-12-29 20:58:42 -0500 | [diff] [blame] | 115 | void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr); |
| 116 | void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr); |
| 117 | void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr); |
| 118 | void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr); |
Paul Gortmaker | 8f19afb | 2011-02-28 11:36:21 -0400 | [diff] [blame] | 119 | int tipc_node_active_links(struct tipc_node *n_ptr); |
| 120 | int tipc_node_redundant_links(struct tipc_node *n_ptr); |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 121 | int tipc_node_is_up(struct tipc_node *n_ptr); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 122 | struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space); |
| 123 | struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 124 | |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 125 | static inline void tipc_node_lock(struct tipc_node *n_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 126 | { |
| 127 | spin_lock_bh(&n_ptr->lock); |
| 128 | } |
| 129 | |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 130 | static inline void tipc_node_unlock(struct tipc_node *n_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 131 | { |
| 132 | spin_unlock_bh(&n_ptr->lock); |
| 133 | } |
| 134 | |
| 135 | #endif |