Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/msg.h: Include file for TIPC message header routines |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 3 | * |
Jon Paul Maloy | cf2157f | 2015-03-13 16:08:06 -0400 | [diff] [blame] | 4 | * Copyright (c) 2000-2007, 2014-2015 Ericsson AB |
Allan Stephens | 741de3e | 2011-01-25 13:33:31 -0500 | [diff] [blame] | 5 | * Copyright (c) 2005-2008, 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_MSG_H |
| 38 | #define _TIPC_MSG_H |
| 39 | |
Ying Xue | 1da4656 | 2015-01-09 15:27:07 +0800 | [diff] [blame] | 40 | #include <linux/tipc.h> |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 41 | |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 42 | /* |
| 43 | * Constants and routines used to read and write TIPC payload message headers |
| 44 | * |
| 45 | * Note: Some items are also used with TIPC internal message headers |
| 46 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 47 | #define TIPC_VERSION 2 |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 48 | struct plist; |
Allan Stephens | 06d82c9 | 2008-03-06 15:06:55 -0800 | [diff] [blame] | 49 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 50 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 51 | * Payload message users are defined in TIPC's public API: |
| 52 | * - TIPC_LOW_IMPORTANCE |
| 53 | * - TIPC_MEDIUM_IMPORTANCE |
| 54 | * - TIPC_HIGH_IMPORTANCE |
| 55 | * - TIPC_CRITICAL_IMPORTANCE |
| 56 | */ |
| 57 | |
| 58 | /* |
| 59 | * Payload message types |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 60 | */ |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 61 | #define TIPC_CONN_MSG 0 |
| 62 | #define TIPC_MCAST_MSG 1 |
| 63 | #define TIPC_NAMED_MSG 2 |
| 64 | #define TIPC_DIRECT_MSG 3 |
| 65 | |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 66 | /* |
| 67 | * Message header sizes |
| 68 | */ |
Allan Stephens | 741d9eb | 2011-05-31 15:03:18 -0400 | [diff] [blame] | 69 | #define SHORT_H_SIZE 24 /* In-cluster basic payload message */ |
| 70 | #define BASIC_H_SIZE 32 /* Basic payload message */ |
| 71 | #define NAMED_H_SIZE 40 /* Named payload message */ |
| 72 | #define MCAST_H_SIZE 44 /* Multicast payload message */ |
Allan Stephens | 06d82c9 | 2008-03-06 15:06:55 -0800 | [diff] [blame] | 73 | #define INT_H_SIZE 40 /* Internal messages */ |
| 74 | #define MIN_H_SIZE 24 /* Smallest legal TIPC header size */ |
| 75 | #define MAX_H_SIZE 60 /* Largest possible TIPC header size */ |
| 76 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 77 | #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 78 | |
Erik Hugne | 91e2eb5 | 2015-02-27 08:56:57 +0100 | [diff] [blame] | 79 | #define TIPC_MEDIA_INFO_OFFSET 5 |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 80 | |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 81 | /** |
| 82 | * TIPC message buffer code |
| 83 | * |
| 84 | * TIPC message buffer headroom reserves space for the worst-case |
| 85 | * link-level device header (in case the message is sent off-node). |
| 86 | * |
| 87 | * Note: Headroom should be a multiple of 4 to ensure the TIPC header fields |
| 88 | * are word aligned for quicker access |
| 89 | */ |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 90 | #define BUF_HEADROOM (LL_MAX_HEADER + 48) |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 91 | |
| 92 | struct tipc_skb_cb { |
| 93 | void *handle; |
| 94 | struct sk_buff *tail; |
Jon Paul Maloy | cf2157f | 2015-03-13 16:08:06 -0400 | [diff] [blame] | 95 | bool validated; |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 96 | bool wakeup_pending; |
| 97 | bool bundling; |
| 98 | u16 chain_sz; |
| 99 | u16 chain_imp; |
| 100 | }; |
| 101 | |
| 102 | #define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0])) |
| 103 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 104 | struct tipc_msg { |
| 105 | __be32 hdr[15]; |
| 106 | }; |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 107 | |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 108 | static inline struct tipc_msg *buf_msg(struct sk_buff *skb) |
| 109 | { |
| 110 | return (struct tipc_msg *)skb->data; |
| 111 | } |
| 112 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 113 | static inline u32 msg_word(struct tipc_msg *m, u32 pos) |
| 114 | { |
| 115 | return ntohl(m->hdr[pos]); |
| 116 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 117 | |
| 118 | static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) |
| 119 | { |
| 120 | m->hdr[w] = htonl(val); |
| 121 | } |
| 122 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 123 | static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask) |
| 124 | { |
| 125 | return (msg_word(m, w) >> pos) & mask; |
| 126 | } |
| 127 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 128 | static inline void msg_set_bits(struct tipc_msg *m, u32 w, |
| 129 | u32 pos, u32 mask, u32 val) |
| 130 | { |
Allan Stephens | 1f9eda7 | 2007-04-24 14:51:55 -0700 | [diff] [blame] | 131 | val = (val & mask) << pos; |
Al Viro | becf3da | 2008-04-26 22:42:14 -0700 | [diff] [blame] | 132 | mask = mask << pos; |
| 133 | m->hdr[w] &= ~htonl(mask); |
| 134 | m->hdr[w] |= htonl(val); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 135 | } |
| 136 | |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 137 | static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b) |
| 138 | { |
| 139 | u32 temp = msg->hdr[a]; |
| 140 | |
| 141 | msg->hdr[a] = msg->hdr[b]; |
| 142 | msg->hdr[b] = temp; |
| 143 | } |
| 144 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 145 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 146 | * Word 0 |
| 147 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 148 | static inline u32 msg_version(struct tipc_msg *m) |
| 149 | { |
| 150 | return msg_bits(m, 0, 29, 7); |
| 151 | } |
| 152 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 153 | static inline void msg_set_version(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 154 | { |
Allan Stephens | 3769542 | 2008-03-06 15:07:42 -0800 | [diff] [blame] | 155 | msg_set_bits(m, 0, 29, 7, TIPC_VERSION); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | static inline u32 msg_user(struct tipc_msg *m) |
| 159 | { |
| 160 | return msg_bits(m, 0, 25, 0xf); |
| 161 | } |
| 162 | |
| 163 | static inline u32 msg_isdata(struct tipc_msg *m) |
| 164 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 165 | return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 166 | } |
| 167 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 168 | static inline void msg_set_user(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 169 | { |
| 170 | msg_set_bits(m, 0, 25, 0xf, n); |
| 171 | } |
| 172 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 173 | static inline u32 msg_importance(struct tipc_msg *m) |
| 174 | { |
| 175 | return msg_bits(m, 0, 25, 0xf); |
| 176 | } |
| 177 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 178 | static inline void msg_set_importance(struct tipc_msg *m, u32 i) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 179 | { |
| 180 | msg_set_user(m, i); |
| 181 | } |
| 182 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 183 | static inline u32 msg_hdr_sz(struct tipc_msg *m) |
| 184 | { |
| 185 | return msg_bits(m, 0, 21, 0xf) << 2; |
| 186 | } |
| 187 | |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 188 | static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 189 | { |
| 190 | msg_set_bits(m, 0, 21, 0xf, n>>2); |
| 191 | } |
| 192 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 193 | static inline u32 msg_size(struct tipc_msg *m) |
| 194 | { |
| 195 | return msg_bits(m, 0, 0, 0x1ffff); |
| 196 | } |
| 197 | |
| 198 | static inline u32 msg_data_sz(struct tipc_msg *m) |
| 199 | { |
| 200 | return msg_size(m) - msg_hdr_sz(m); |
| 201 | } |
| 202 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 203 | static inline int msg_non_seq(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 204 | { |
| 205 | return msg_bits(m, 0, 20, 1); |
| 206 | } |
| 207 | |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 208 | static inline void msg_set_non_seq(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 209 | { |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 210 | msg_set_bits(m, 0, 20, 1, n); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 211 | } |
| 212 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 213 | static inline int msg_dest_droppable(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 214 | { |
| 215 | return msg_bits(m, 0, 19, 1); |
| 216 | } |
| 217 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 218 | static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 219 | { |
| 220 | msg_set_bits(m, 0, 19, 1, d); |
| 221 | } |
| 222 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 223 | static inline int msg_src_droppable(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 224 | { |
| 225 | return msg_bits(m, 0, 18, 1); |
| 226 | } |
| 227 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 228 | static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 229 | { |
| 230 | msg_set_bits(m, 0, 18, 1, d); |
| 231 | } |
| 232 | |
| 233 | static inline void msg_set_size(struct tipc_msg *m, u32 sz) |
| 234 | { |
| 235 | m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz); |
| 236 | } |
| 237 | |
| 238 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 239 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 240 | * Word 1 |
| 241 | */ |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 242 | static inline u32 msg_type(struct tipc_msg *m) |
| 243 | { |
| 244 | return msg_bits(m, 1, 29, 0x7); |
| 245 | } |
| 246 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 247 | static inline void msg_set_type(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 248 | { |
| 249 | msg_set_bits(m, 1, 29, 0x7, n); |
| 250 | } |
| 251 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 252 | static inline u32 msg_named(struct tipc_msg *m) |
| 253 | { |
| 254 | return msg_type(m) == TIPC_NAMED_MSG; |
| 255 | } |
| 256 | |
| 257 | static inline u32 msg_mcast(struct tipc_msg *m) |
| 258 | { |
| 259 | return msg_type(m) == TIPC_MCAST_MSG; |
| 260 | } |
| 261 | |
| 262 | static inline u32 msg_connected(struct tipc_msg *m) |
| 263 | { |
| 264 | return msg_type(m) == TIPC_CONN_MSG; |
| 265 | } |
| 266 | |
| 267 | static inline u32 msg_errcode(struct tipc_msg *m) |
| 268 | { |
| 269 | return msg_bits(m, 1, 25, 0xf); |
| 270 | } |
| 271 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 272 | static inline void msg_set_errcode(struct tipc_msg *m, u32 err) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 273 | { |
| 274 | msg_set_bits(m, 1, 25, 0xf, err); |
| 275 | } |
| 276 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 277 | static inline u32 msg_reroute_cnt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 278 | { |
| 279 | return msg_bits(m, 1, 21, 0xf); |
| 280 | } |
| 281 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 282 | static inline void msg_incr_reroute_cnt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 283 | { |
| 284 | msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1); |
| 285 | } |
| 286 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 287 | static inline void msg_reset_reroute_cnt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 288 | { |
| 289 | msg_set_bits(m, 1, 21, 0xf, 0); |
| 290 | } |
| 291 | |
| 292 | static inline u32 msg_lookup_scope(struct tipc_msg *m) |
| 293 | { |
| 294 | return msg_bits(m, 1, 19, 0x3); |
| 295 | } |
| 296 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 297 | static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 298 | { |
| 299 | msg_set_bits(m, 1, 19, 0x3, n); |
| 300 | } |
| 301 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 302 | static inline u32 msg_bcast_ack(struct tipc_msg *m) |
| 303 | { |
| 304 | return msg_bits(m, 1, 0, 0xffff); |
| 305 | } |
| 306 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 307 | static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 308 | { |
| 309 | msg_set_bits(m, 1, 0, 0xffff, n); |
| 310 | } |
| 311 | |
| 312 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 313 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 314 | * Word 2 |
| 315 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 316 | static inline u32 msg_ack(struct tipc_msg *m) |
| 317 | { |
| 318 | return msg_bits(m, 2, 16, 0xffff); |
| 319 | } |
| 320 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 321 | static inline void msg_set_ack(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 322 | { |
| 323 | msg_set_bits(m, 2, 16, 0xffff, n); |
| 324 | } |
| 325 | |
| 326 | static inline u32 msg_seqno(struct tipc_msg *m) |
| 327 | { |
| 328 | return msg_bits(m, 2, 0, 0xffff); |
| 329 | } |
| 330 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 331 | static inline void msg_set_seqno(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 332 | { |
| 333 | msg_set_bits(m, 2, 0, 0xffff, n); |
| 334 | } |
| 335 | |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 336 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 337 | * Words 3-10 |
| 338 | */ |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 339 | static inline u32 msg_prevnode(struct tipc_msg *m) |
| 340 | { |
| 341 | return msg_word(m, 3); |
| 342 | } |
| 343 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 344 | static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 345 | { |
| 346 | msg_set_word(m, 3, a); |
| 347 | } |
| 348 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 349 | static inline u32 msg_origport(struct tipc_msg *m) |
| 350 | { |
| 351 | return msg_word(m, 4); |
| 352 | } |
| 353 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 354 | static inline void msg_set_origport(struct tipc_msg *m, u32 p) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 355 | { |
| 356 | msg_set_word(m, 4, p); |
| 357 | } |
| 358 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 359 | static inline u32 msg_destport(struct tipc_msg *m) |
| 360 | { |
| 361 | return msg_word(m, 5); |
| 362 | } |
| 363 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 364 | static inline void msg_set_destport(struct tipc_msg *m, u32 p) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 365 | { |
| 366 | msg_set_word(m, 5, p); |
| 367 | } |
| 368 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 369 | static inline u32 msg_mc_netid(struct tipc_msg *m) |
| 370 | { |
| 371 | return msg_word(m, 5); |
| 372 | } |
| 373 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 374 | static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 375 | { |
| 376 | msg_set_word(m, 5, p); |
| 377 | } |
| 378 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 379 | static inline int msg_short(struct tipc_msg *m) |
| 380 | { |
Allan Stephens | 741d9eb | 2011-05-31 15:03:18 -0400 | [diff] [blame] | 381 | return msg_hdr_sz(m) == SHORT_H_SIZE; |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | static inline u32 msg_orignode(struct tipc_msg *m) |
| 385 | { |
| 386 | if (likely(msg_short(m))) |
| 387 | return msg_prevnode(m); |
| 388 | return msg_word(m, 6); |
| 389 | } |
| 390 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 391 | static inline void msg_set_orignode(struct tipc_msg *m, u32 a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 392 | { |
| 393 | msg_set_word(m, 6, a); |
| 394 | } |
| 395 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 396 | static inline u32 msg_destnode(struct tipc_msg *m) |
| 397 | { |
| 398 | return msg_word(m, 7); |
| 399 | } |
| 400 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 401 | static inline void msg_set_destnode(struct tipc_msg *m, u32 a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 402 | { |
| 403 | msg_set_word(m, 7, a); |
| 404 | } |
| 405 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 406 | static inline u32 msg_nametype(struct tipc_msg *m) |
| 407 | { |
| 408 | return msg_word(m, 8); |
| 409 | } |
| 410 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 411 | static inline void msg_set_nametype(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 412 | { |
| 413 | msg_set_word(m, 8, n); |
| 414 | } |
| 415 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 416 | static inline u32 msg_nameinst(struct tipc_msg *m) |
| 417 | { |
| 418 | return msg_word(m, 9); |
| 419 | } |
| 420 | |
| 421 | static inline u32 msg_namelower(struct tipc_msg *m) |
| 422 | { |
| 423 | return msg_nameinst(m); |
| 424 | } |
| 425 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 426 | static inline void msg_set_namelower(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 427 | { |
| 428 | msg_set_word(m, 9, n); |
| 429 | } |
| 430 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 431 | static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 432 | { |
| 433 | msg_set_namelower(m, n); |
| 434 | } |
| 435 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 436 | static inline u32 msg_nameupper(struct tipc_msg *m) |
| 437 | { |
| 438 | return msg_word(m, 10); |
| 439 | } |
| 440 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 441 | static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 442 | { |
| 443 | msg_set_word(m, 10, n); |
| 444 | } |
| 445 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 446 | static inline unchar *msg_data(struct tipc_msg *m) |
| 447 | { |
| 448 | return ((unchar *)m) + msg_hdr_sz(m); |
| 449 | } |
| 450 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 451 | static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m) |
| 452 | { |
| 453 | return (struct tipc_msg *)msg_data(m); |
| 454 | } |
| 455 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 456 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 457 | * Constants and routines used to read and write TIPC internal message headers |
| 458 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 459 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 460 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 461 | * Internal message users |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 462 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 463 | #define BCAST_PROTOCOL 5 |
| 464 | #define MSG_BUNDLER 6 |
| 465 | #define LINK_PROTOCOL 7 |
| 466 | #define CONN_MANAGER 8 |
Allan Stephens | 51a8e4d | 2010-12-31 18:59:18 +0000 | [diff] [blame] | 467 | #define ROUTE_DISTRIBUTOR 9 /* obsoleted */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 468 | #define CHANGEOVER_PROTOCOL 10 |
| 469 | #define NAME_DISTRIBUTOR 11 |
| 470 | #define MSG_FRAGMENTER 12 |
| 471 | #define LINK_CONFIG 13 |
Jon Paul Maloy | 50100a5 | 2014-08-22 18:09:07 -0400 | [diff] [blame] | 472 | #define SOCK_WAKEUP 14 /* pseudo user */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 473 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 474 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 475 | * Connection management protocol message types |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 476 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 477 | #define CONN_PROBE 0 |
| 478 | #define CONN_PROBE_REPLY 1 |
| 479 | #define CONN_ACK 2 |
| 480 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 481 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 482 | * Name distributor message types |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 483 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 484 | #define PUBLICATION 0 |
| 485 | #define WITHDRAWAL 1 |
| 486 | |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 487 | /* |
| 488 | * Segmentation message types |
| 489 | */ |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 490 | #define FIRST_FRAGMENT 0 |
| 491 | #define FRAGMENT 1 |
| 492 | #define LAST_FRAGMENT 2 |
| 493 | |
| 494 | /* |
| 495 | * Link management protocol message types |
| 496 | */ |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 497 | #define STATE_MSG 0 |
| 498 | #define RESET_MSG 1 |
| 499 | #define ACTIVATE_MSG 2 |
| 500 | |
| 501 | /* |
| 502 | * Changeover tunnel message types |
| 503 | */ |
| 504 | #define DUPLICATE_MSG 0 |
| 505 | #define ORIGINAL_MSG 1 |
| 506 | |
| 507 | /* |
| 508 | * Config protocol message types |
| 509 | */ |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 510 | #define DSC_REQ_MSG 0 |
| 511 | #define DSC_RESP_MSG 1 |
| 512 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 513 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 514 | * Word 1 |
| 515 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 516 | static inline u32 msg_seq_gap(struct tipc_msg *m) |
| 517 | { |
Allan Stephens | bd78453 | 2008-06-04 17:47:30 -0700 | [diff] [blame] | 518 | return msg_bits(m, 1, 16, 0x1fff); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 519 | } |
| 520 | |
| 521 | static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) |
| 522 | { |
Allan Stephens | bd78453 | 2008-06-04 17:47:30 -0700 | [diff] [blame] | 523 | msg_set_bits(m, 1, 16, 0x1fff, n); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 524 | } |
| 525 | |
Allan Stephens | fc0eea6 | 2011-10-28 16:26:41 -0400 | [diff] [blame] | 526 | static inline u32 msg_node_sig(struct tipc_msg *m) |
| 527 | { |
| 528 | return msg_bits(m, 1, 0, 0xffff); |
| 529 | } |
| 530 | |
| 531 | static inline void msg_set_node_sig(struct tipc_msg *m, u32 n) |
| 532 | { |
| 533 | msg_set_bits(m, 1, 0, 0xffff, n); |
| 534 | } |
| 535 | |
Jon Paul Maloy | 7764d6e | 2015-03-13 16:08:05 -0400 | [diff] [blame] | 536 | static inline u32 msg_node_capabilities(struct tipc_msg *m) |
| 537 | { |
| 538 | return msg_bits(m, 1, 15, 0x1fff); |
| 539 | } |
| 540 | |
| 541 | static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n) |
| 542 | { |
| 543 | msg_set_bits(m, 1, 15, 0x1fff, n); |
| 544 | } |
| 545 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 546 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 547 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 548 | * Word 2 |
| 549 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 550 | static inline u32 msg_dest_domain(struct tipc_msg *m) |
| 551 | { |
| 552 | return msg_word(m, 2); |
| 553 | } |
| 554 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 555 | static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 556 | { |
| 557 | msg_set_word(m, 2, n); |
| 558 | } |
| 559 | |
| 560 | static inline u32 msg_bcgap_after(struct tipc_msg *m) |
| 561 | { |
| 562 | return msg_bits(m, 2, 16, 0xffff); |
| 563 | } |
| 564 | |
| 565 | static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n) |
| 566 | { |
| 567 | msg_set_bits(m, 2, 16, 0xffff, n); |
| 568 | } |
| 569 | |
| 570 | static inline u32 msg_bcgap_to(struct tipc_msg *m) |
| 571 | { |
| 572 | return msg_bits(m, 2, 0, 0xffff); |
| 573 | } |
| 574 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 575 | static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 576 | { |
| 577 | msg_set_bits(m, 2, 0, 0xffff, n); |
| 578 | } |
| 579 | |
| 580 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 581 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 582 | * Word 4 |
| 583 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 584 | static inline u32 msg_last_bcast(struct tipc_msg *m) |
| 585 | { |
| 586 | return msg_bits(m, 4, 16, 0xffff); |
| 587 | } |
| 588 | |
| 589 | static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n) |
| 590 | { |
| 591 | msg_set_bits(m, 4, 16, 0xffff, n); |
| 592 | } |
| 593 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 594 | static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) |
| 595 | { |
| 596 | msg_set_bits(m, 4, 16, 0xffff, n); |
| 597 | } |
| 598 | |
| 599 | |
| 600 | static inline u32 msg_next_sent(struct tipc_msg *m) |
| 601 | { |
| 602 | return msg_bits(m, 4, 0, 0xffff); |
| 603 | } |
| 604 | |
| 605 | static inline void msg_set_next_sent(struct tipc_msg *m, u32 n) |
| 606 | { |
| 607 | msg_set_bits(m, 4, 0, 0xffff, n); |
| 608 | } |
| 609 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 610 | static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n) |
| 611 | { |
| 612 | msg_set_bits(m, 4, 0, 0xffff, n); |
| 613 | } |
| 614 | |
| 615 | static inline u32 msg_bc_netid(struct tipc_msg *m) |
| 616 | { |
| 617 | return msg_word(m, 4); |
| 618 | } |
| 619 | |
| 620 | static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id) |
| 621 | { |
| 622 | msg_set_word(m, 4, id); |
| 623 | } |
| 624 | |
| 625 | static inline u32 msg_link_selector(struct tipc_msg *m) |
| 626 | { |
| 627 | return msg_bits(m, 4, 0, 1); |
| 628 | } |
| 629 | |
| 630 | static inline void msg_set_link_selector(struct tipc_msg *m, u32 n) |
| 631 | { |
Allan Stephens | 7eb878e | 2011-05-25 13:28:27 -0400 | [diff] [blame] | 632 | msg_set_bits(m, 4, 0, 1, n); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 633 | } |
| 634 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 635 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 636 | * Word 5 |
| 637 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 638 | static inline u32 msg_session(struct tipc_msg *m) |
| 639 | { |
| 640 | return msg_bits(m, 5, 16, 0xffff); |
| 641 | } |
| 642 | |
| 643 | static inline void msg_set_session(struct tipc_msg *m, u32 n) |
| 644 | { |
| 645 | msg_set_bits(m, 5, 16, 0xffff, n); |
| 646 | } |
| 647 | |
| 648 | static inline u32 msg_probe(struct tipc_msg *m) |
| 649 | { |
| 650 | return msg_bits(m, 5, 0, 1); |
| 651 | } |
| 652 | |
| 653 | static inline void msg_set_probe(struct tipc_msg *m, u32 val) |
| 654 | { |
Allan Stephens | 7eb878e | 2011-05-25 13:28:27 -0400 | [diff] [blame] | 655 | msg_set_bits(m, 5, 0, 1, val); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 656 | } |
| 657 | |
| 658 | static inline char msg_net_plane(struct tipc_msg *m) |
| 659 | { |
| 660 | return msg_bits(m, 5, 1, 7) + 'A'; |
| 661 | } |
| 662 | |
| 663 | static inline void msg_set_net_plane(struct tipc_msg *m, char n) |
| 664 | { |
| 665 | msg_set_bits(m, 5, 1, 7, (n - 'A')); |
| 666 | } |
| 667 | |
| 668 | static inline u32 msg_linkprio(struct tipc_msg *m) |
| 669 | { |
| 670 | return msg_bits(m, 5, 4, 0x1f); |
| 671 | } |
| 672 | |
| 673 | static inline void msg_set_linkprio(struct tipc_msg *m, u32 n) |
| 674 | { |
| 675 | msg_set_bits(m, 5, 4, 0x1f, n); |
| 676 | } |
| 677 | |
| 678 | static inline u32 msg_bearer_id(struct tipc_msg *m) |
| 679 | { |
| 680 | return msg_bits(m, 5, 9, 0x7); |
| 681 | } |
| 682 | |
| 683 | static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n) |
| 684 | { |
| 685 | msg_set_bits(m, 5, 9, 0x7, n); |
| 686 | } |
| 687 | |
| 688 | static inline u32 msg_redundant_link(struct tipc_msg *m) |
| 689 | { |
| 690 | return msg_bits(m, 5, 12, 0x1); |
| 691 | } |
| 692 | |
Allan Stephens | 77f167f | 2011-02-28 15:30:20 -0500 | [diff] [blame] | 693 | static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 694 | { |
Allan Stephens | 77f167f | 2011-02-28 15:30:20 -0500 | [diff] [blame] | 695 | msg_set_bits(m, 5, 12, 0x1, r); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 696 | } |
| 697 | |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 698 | static inline char *msg_media_addr(struct tipc_msg *m) |
| 699 | { |
Erik Hugne | 91e2eb5 | 2015-02-27 08:56:57 +0100 | [diff] [blame] | 700 | return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET]; |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 701 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 702 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 703 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 704 | * Word 9 |
| 705 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 706 | static inline u32 msg_msgcnt(struct tipc_msg *m) |
| 707 | { |
| 708 | return msg_bits(m, 9, 16, 0xffff); |
| 709 | } |
| 710 | |
| 711 | static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n) |
| 712 | { |
| 713 | msg_set_bits(m, 9, 16, 0xffff, n); |
| 714 | } |
| 715 | |
| 716 | static inline u32 msg_bcast_tag(struct tipc_msg *m) |
| 717 | { |
| 718 | return msg_bits(m, 9, 16, 0xffff); |
| 719 | } |
| 720 | |
| 721 | static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n) |
| 722 | { |
| 723 | msg_set_bits(m, 9, 16, 0xffff, n); |
| 724 | } |
| 725 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 726 | static inline u32 msg_max_pkt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 727 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 728 | return msg_bits(m, 9, 16, 0xffff) * 4; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 729 | } |
| 730 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 731 | static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 732 | { |
| 733 | msg_set_bits(m, 9, 16, 0xffff, (n / 4)); |
| 734 | } |
| 735 | |
| 736 | static inline u32 msg_link_tolerance(struct tipc_msg *m) |
| 737 | { |
| 738 | return msg_bits(m, 9, 0, 0xffff); |
| 739 | } |
| 740 | |
| 741 | static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) |
| 742 | { |
| 743 | msg_set_bits(m, 9, 0, 0xffff, n); |
| 744 | } |
| 745 | |
Jon Paul Maloy | 4f1688b | 2014-06-25 20:41:32 -0500 | [diff] [blame] | 746 | static inline u32 tipc_msg_tot_importance(struct tipc_msg *m) |
| 747 | { |
| 748 | if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT)) |
| 749 | return msg_importance(msg_get_wrapped(m)); |
| 750 | return msg_importance(m); |
| 751 | } |
| 752 | |
| 753 | static inline u32 msg_tot_origport(struct tipc_msg *m) |
| 754 | { |
| 755 | if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT)) |
| 756 | return msg_origport(msg_get_wrapped(m)); |
| 757 | return msg_origport(m); |
| 758 | } |
| 759 | |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 760 | struct sk_buff *tipc_buf_acquire(u32 size); |
Jon Paul Maloy | cf2157f | 2015-03-13 16:08:06 -0400 | [diff] [blame] | 761 | bool tipc_msg_validate(struct sk_buff *skb); |
Jon Paul Maloy | c589863 | 2015-02-05 08:36:36 -0500 | [diff] [blame] | 762 | bool tipc_msg_reverse(u32 own_addr, struct sk_buff *buf, u32 *dnode, |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 763 | int err); |
Jon Paul Maloy | c589863 | 2015-02-05 08:36:36 -0500 | [diff] [blame] | 764 | void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type, |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 765 | u32 hsize, u32 destnode); |
Jon Paul Maloy | e3a7756 | 2015-02-05 08:36:39 -0500 | [diff] [blame] | 766 | struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz, |
| 767 | uint data_sz, u32 dnode, u32 onode, |
| 768 | u32 dport, u32 oport, int errcode); |
Jon Paul Maloy | 37e2216 | 2014-05-14 05:39:12 -0400 | [diff] [blame] | 769 | int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf); |
Jon Paul Maloy | 05dcc5a | 2015-03-13 16:08:10 -0400 | [diff] [blame^] | 770 | bool tipc_msg_bundle(struct sk_buff *bskb, struct sk_buff *skb, u32 mtu); |
| 771 | |
| 772 | bool tipc_msg_make_bundle(struct sk_buff **skb, u32 mtu, u32 dnode); |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 773 | bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos); |
Jon Paul Maloy | c589863 | 2015-02-05 08:36:36 -0500 | [diff] [blame] | 774 | int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 775 | int offset, int dsz, int mtu, struct sk_buff_head *list); |
Jon Paul Maloy | e3a7756 | 2015-02-05 08:36:39 -0500 | [diff] [blame] | 776 | bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, u32 *dnode, |
| 777 | int *err); |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 778 | struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list); |
Jon Paul Maloy | 078bec8 | 2014-07-16 20:41:00 -0400 | [diff] [blame] | 779 | |
Jon Paul Maloy | cb1b728 | 2015-02-05 08:36:44 -0500 | [diff] [blame] | 780 | /* tipc_skb_peek(): peek and reserve first buffer in list |
| 781 | * @list: list to be peeked in |
| 782 | * Returns pointer to first buffer in list, if any |
| 783 | */ |
| 784 | static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list, |
| 785 | spinlock_t *lock) |
| 786 | { |
| 787 | struct sk_buff *skb; |
| 788 | |
| 789 | spin_lock_bh(lock); |
| 790 | skb = skb_peek(list); |
| 791 | if (skb) |
| 792 | skb_get(skb); |
| 793 | spin_unlock_bh(lock); |
| 794 | return skb; |
| 795 | } |
| 796 | |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 797 | /* tipc_skb_peek_port(): find a destination port, ignoring all destinations |
| 798 | * up to and including 'filter'. |
| 799 | * Note: ignoring previously tried destinations minimizes the risk of |
| 800 | * contention on the socket lock |
| 801 | * @list: list to be peeked in |
| 802 | * @filter: last destination to be ignored from search |
| 803 | * Returns a destination port number, of applicable. |
| 804 | */ |
| 805 | static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter) |
| 806 | { |
| 807 | struct sk_buff *skb; |
| 808 | u32 dport = 0; |
| 809 | bool ignore = true; |
| 810 | |
| 811 | spin_lock_bh(&list->lock); |
| 812 | skb_queue_walk(list, skb) { |
| 813 | dport = msg_destport(buf_msg(skb)); |
| 814 | if (!filter || skb_queue_is_last(list, skb)) |
| 815 | break; |
| 816 | if (dport == filter) |
| 817 | ignore = false; |
| 818 | else if (!ignore) |
| 819 | break; |
| 820 | } |
| 821 | spin_unlock_bh(&list->lock); |
| 822 | return dport; |
| 823 | } |
| 824 | |
| 825 | /* tipc_skb_dequeue(): unlink first buffer with dest 'dport' from list |
| 826 | * @list: list to be unlinked from |
| 827 | * @dport: selection criteria for buffer to unlink |
| 828 | */ |
| 829 | static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list, |
| 830 | u32 dport) |
| 831 | { |
| 832 | struct sk_buff *_skb, *tmp, *skb = NULL; |
| 833 | |
| 834 | spin_lock_bh(&list->lock); |
| 835 | skb_queue_walk_safe(list, _skb, tmp) { |
| 836 | if (msg_destport(buf_msg(_skb)) == dport) { |
| 837 | __skb_unlink(_skb, list); |
| 838 | skb = _skb; |
| 839 | break; |
| 840 | } |
| 841 | } |
| 842 | spin_unlock_bh(&list->lock); |
| 843 | return skb; |
| 844 | } |
| 845 | |
| 846 | /* tipc_skb_queue_tail(): add buffer to tail of list; |
| 847 | * @list: list to be appended to |
| 848 | * @skb: buffer to append. Always appended |
| 849 | * @dport: the destination port of the buffer |
| 850 | * returns true if dport differs from previous destination |
| 851 | */ |
| 852 | static inline bool tipc_skb_queue_tail(struct sk_buff_head *list, |
| 853 | struct sk_buff *skb, u32 dport) |
| 854 | { |
| 855 | struct sk_buff *_skb = NULL; |
| 856 | bool rv = false; |
| 857 | |
| 858 | spin_lock_bh(&list->lock); |
| 859 | _skb = skb_peek_tail(list); |
| 860 | if (!_skb || (msg_destport(buf_msg(_skb)) != dport) || |
| 861 | (skb_queue_len(list) > 32)) |
| 862 | rv = true; |
| 863 | __skb_queue_tail(list, skb); |
| 864 | spin_unlock_bh(&list->lock); |
| 865 | return rv; |
| 866 | } |
| 867 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 868 | #endif |