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 | */ |
Jon Paul Maloy | e3eea1e | 2015-03-13 16:08:11 -0400 | [diff] [blame] | 57 | #define TIPC_SYSTEM_IMPORTANCE 4 |
| 58 | |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 59 | |
| 60 | /* |
| 61 | * Payload message types |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 62 | */ |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 63 | #define TIPC_CONN_MSG 0 |
| 64 | #define TIPC_MCAST_MSG 1 |
| 65 | #define TIPC_NAMED_MSG 2 |
| 66 | #define TIPC_DIRECT_MSG 3 |
| 67 | |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 68 | /* |
Jon Paul Maloy | e3eea1e | 2015-03-13 16:08:11 -0400 | [diff] [blame] | 69 | * Internal message users |
| 70 | */ |
| 71 | #define BCAST_PROTOCOL 5 |
| 72 | #define MSG_BUNDLER 6 |
| 73 | #define LINK_PROTOCOL 7 |
| 74 | #define CONN_MANAGER 8 |
| 75 | #define CHANGEOVER_PROTOCOL 10 |
| 76 | #define NAME_DISTRIBUTOR 11 |
| 77 | #define MSG_FRAGMENTER 12 |
| 78 | #define LINK_CONFIG 13 |
| 79 | #define SOCK_WAKEUP 14 /* pseudo user */ |
| 80 | |
| 81 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 82 | * Message header sizes |
| 83 | */ |
Allan Stephens | 741d9eb | 2011-05-31 15:03:18 -0400 | [diff] [blame] | 84 | #define SHORT_H_SIZE 24 /* In-cluster basic payload message */ |
| 85 | #define BASIC_H_SIZE 32 /* Basic payload message */ |
| 86 | #define NAMED_H_SIZE 40 /* Named payload message */ |
| 87 | #define MCAST_H_SIZE 44 /* Multicast payload message */ |
Allan Stephens | 06d82c9 | 2008-03-06 15:06:55 -0800 | [diff] [blame] | 88 | #define INT_H_SIZE 40 /* Internal messages */ |
| 89 | #define MIN_H_SIZE 24 /* Smallest legal TIPC header size */ |
| 90 | #define MAX_H_SIZE 60 /* Largest possible TIPC header size */ |
| 91 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 92 | #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 93 | |
Erik Hugne | 91e2eb5 | 2015-02-27 08:56:57 +0100 | [diff] [blame] | 94 | #define TIPC_MEDIA_INFO_OFFSET 5 |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 95 | |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 96 | /** |
| 97 | * TIPC message buffer code |
| 98 | * |
| 99 | * TIPC message buffer headroom reserves space for the worst-case |
| 100 | * link-level device header (in case the message is sent off-node). |
| 101 | * |
| 102 | * Note: Headroom should be a multiple of 4 to ensure the TIPC header fields |
| 103 | * are word aligned for quicker access |
| 104 | */ |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 105 | #define BUF_HEADROOM (LL_MAX_HEADER + 48) |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 106 | |
| 107 | struct tipc_skb_cb { |
| 108 | void *handle; |
| 109 | struct sk_buff *tail; |
Jon Paul Maloy | cf2157f | 2015-03-13 16:08:06 -0400 | [diff] [blame] | 110 | bool validated; |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 111 | bool wakeup_pending; |
| 112 | bool bundling; |
| 113 | u16 chain_sz; |
| 114 | u16 chain_imp; |
| 115 | }; |
| 116 | |
| 117 | #define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0])) |
| 118 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 119 | struct tipc_msg { |
| 120 | __be32 hdr[15]; |
| 121 | }; |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 122 | |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 123 | static inline struct tipc_msg *buf_msg(struct sk_buff *skb) |
| 124 | { |
| 125 | return (struct tipc_msg *)skb->data; |
| 126 | } |
| 127 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 128 | static inline u32 msg_word(struct tipc_msg *m, u32 pos) |
| 129 | { |
| 130 | return ntohl(m->hdr[pos]); |
| 131 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 132 | |
| 133 | static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) |
| 134 | { |
| 135 | m->hdr[w] = htonl(val); |
| 136 | } |
| 137 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 138 | static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask) |
| 139 | { |
| 140 | return (msg_word(m, w) >> pos) & mask; |
| 141 | } |
| 142 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 143 | static inline void msg_set_bits(struct tipc_msg *m, u32 w, |
| 144 | u32 pos, u32 mask, u32 val) |
| 145 | { |
Allan Stephens | 1f9eda7 | 2007-04-24 14:51:55 -0700 | [diff] [blame] | 146 | val = (val & mask) << pos; |
Al Viro | becf3da | 2008-04-26 22:42:14 -0700 | [diff] [blame] | 147 | mask = mask << pos; |
| 148 | m->hdr[w] &= ~htonl(mask); |
| 149 | m->hdr[w] |= htonl(val); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 150 | } |
| 151 | |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 152 | static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b) |
| 153 | { |
| 154 | u32 temp = msg->hdr[a]; |
| 155 | |
| 156 | msg->hdr[a] = msg->hdr[b]; |
| 157 | msg->hdr[b] = temp; |
| 158 | } |
| 159 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 160 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 161 | * Word 0 |
| 162 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 163 | static inline u32 msg_version(struct tipc_msg *m) |
| 164 | { |
| 165 | return msg_bits(m, 0, 29, 7); |
| 166 | } |
| 167 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 168 | static inline void msg_set_version(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 169 | { |
Allan Stephens | 3769542 | 2008-03-06 15:07:42 -0800 | [diff] [blame] | 170 | msg_set_bits(m, 0, 29, 7, TIPC_VERSION); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static inline u32 msg_user(struct tipc_msg *m) |
| 174 | { |
| 175 | return msg_bits(m, 0, 25, 0xf); |
| 176 | } |
| 177 | |
| 178 | static inline u32 msg_isdata(struct tipc_msg *m) |
| 179 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 180 | return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 181 | } |
| 182 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 183 | static inline void msg_set_user(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 184 | { |
| 185 | msg_set_bits(m, 0, 25, 0xf, n); |
| 186 | } |
| 187 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 188 | static inline u32 msg_hdr_sz(struct tipc_msg *m) |
| 189 | { |
| 190 | return msg_bits(m, 0, 21, 0xf) << 2; |
| 191 | } |
| 192 | |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 193 | 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] | 194 | { |
| 195 | msg_set_bits(m, 0, 21, 0xf, n>>2); |
| 196 | } |
| 197 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 198 | static inline u32 msg_size(struct tipc_msg *m) |
| 199 | { |
| 200 | return msg_bits(m, 0, 0, 0x1ffff); |
| 201 | } |
| 202 | |
| 203 | static inline u32 msg_data_sz(struct tipc_msg *m) |
| 204 | { |
| 205 | return msg_size(m) - msg_hdr_sz(m); |
| 206 | } |
| 207 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 208 | static inline int msg_non_seq(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 209 | { |
| 210 | return msg_bits(m, 0, 20, 1); |
| 211 | } |
| 212 | |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 213 | 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] | 214 | { |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 215 | msg_set_bits(m, 0, 20, 1, n); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 216 | } |
| 217 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 218 | static inline int msg_dest_droppable(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 219 | { |
| 220 | return msg_bits(m, 0, 19, 1); |
| 221 | } |
| 222 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 223 | 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] | 224 | { |
| 225 | msg_set_bits(m, 0, 19, 1, d); |
| 226 | } |
| 227 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 228 | static inline int msg_src_droppable(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 229 | { |
| 230 | return msg_bits(m, 0, 18, 1); |
| 231 | } |
| 232 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 233 | 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] | 234 | { |
| 235 | msg_set_bits(m, 0, 18, 1, d); |
| 236 | } |
| 237 | |
| 238 | static inline void msg_set_size(struct tipc_msg *m, u32 sz) |
| 239 | { |
| 240 | m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz); |
| 241 | } |
| 242 | |
Jon Paul Maloy | 3127a02 | 2015-03-25 12:07:25 -0400 | [diff] [blame] | 243 | static inline unchar *msg_data(struct tipc_msg *m) |
| 244 | { |
| 245 | return ((unchar *)m) + msg_hdr_sz(m); |
| 246 | } |
| 247 | |
| 248 | static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m) |
| 249 | { |
| 250 | return (struct tipc_msg *)msg_data(m); |
| 251 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 252 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 253 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 254 | * Word 1 |
| 255 | */ |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 256 | static inline u32 msg_type(struct tipc_msg *m) |
| 257 | { |
| 258 | return msg_bits(m, 1, 29, 0x7); |
| 259 | } |
| 260 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 261 | static inline void msg_set_type(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 262 | { |
| 263 | msg_set_bits(m, 1, 29, 0x7, n); |
| 264 | } |
| 265 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 266 | static inline u32 msg_named(struct tipc_msg *m) |
| 267 | { |
| 268 | return msg_type(m) == TIPC_NAMED_MSG; |
| 269 | } |
| 270 | |
| 271 | static inline u32 msg_mcast(struct tipc_msg *m) |
| 272 | { |
| 273 | return msg_type(m) == TIPC_MCAST_MSG; |
| 274 | } |
| 275 | |
| 276 | static inline u32 msg_connected(struct tipc_msg *m) |
| 277 | { |
| 278 | return msg_type(m) == TIPC_CONN_MSG; |
| 279 | } |
| 280 | |
| 281 | static inline u32 msg_errcode(struct tipc_msg *m) |
| 282 | { |
| 283 | return msg_bits(m, 1, 25, 0xf); |
| 284 | } |
| 285 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 286 | static inline void msg_set_errcode(struct tipc_msg *m, u32 err) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 287 | { |
| 288 | msg_set_bits(m, 1, 25, 0xf, err); |
| 289 | } |
| 290 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 291 | static inline u32 msg_reroute_cnt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 292 | { |
| 293 | return msg_bits(m, 1, 21, 0xf); |
| 294 | } |
| 295 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 296 | static inline void msg_incr_reroute_cnt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 297 | { |
| 298 | msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1); |
| 299 | } |
| 300 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 301 | static inline void msg_reset_reroute_cnt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 302 | { |
| 303 | msg_set_bits(m, 1, 21, 0xf, 0); |
| 304 | } |
| 305 | |
| 306 | static inline u32 msg_lookup_scope(struct tipc_msg *m) |
| 307 | { |
| 308 | return msg_bits(m, 1, 19, 0x3); |
| 309 | } |
| 310 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 311 | 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] | 312 | { |
| 313 | msg_set_bits(m, 1, 19, 0x3, n); |
| 314 | } |
| 315 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 316 | static inline u32 msg_bcast_ack(struct tipc_msg *m) |
| 317 | { |
| 318 | return msg_bits(m, 1, 0, 0xffff); |
| 319 | } |
| 320 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 321 | 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] | 322 | { |
| 323 | msg_set_bits(m, 1, 0, 0xffff, n); |
| 324 | } |
| 325 | |
| 326 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 327 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 328 | * Word 2 |
| 329 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 330 | static inline u32 msg_ack(struct tipc_msg *m) |
| 331 | { |
| 332 | return msg_bits(m, 2, 16, 0xffff); |
| 333 | } |
| 334 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 335 | static inline void msg_set_ack(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 336 | { |
| 337 | msg_set_bits(m, 2, 16, 0xffff, n); |
| 338 | } |
| 339 | |
| 340 | static inline u32 msg_seqno(struct tipc_msg *m) |
| 341 | { |
| 342 | return msg_bits(m, 2, 0, 0xffff); |
| 343 | } |
| 344 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 345 | static inline void msg_set_seqno(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 346 | { |
| 347 | msg_set_bits(m, 2, 0, 0xffff, n); |
| 348 | } |
| 349 | |
Allan Stephens | 40aecb1 | 2008-06-04 17:54:48 -0700 | [diff] [blame] | 350 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 351 | * Words 3-10 |
| 352 | */ |
Jon Paul Maloy | e3eea1e | 2015-03-13 16:08:11 -0400 | [diff] [blame] | 353 | static inline u32 msg_importance(struct tipc_msg *m) |
| 354 | { |
| 355 | if (unlikely(msg_user(m) == MSG_FRAGMENTER)) |
| 356 | return msg_bits(m, 5, 13, 0x7); |
| 357 | if (likely(msg_isdata(m) && !msg_errcode(m))) |
| 358 | return msg_user(m); |
| 359 | return TIPC_SYSTEM_IMPORTANCE; |
| 360 | } |
| 361 | |
| 362 | static inline void msg_set_importance(struct tipc_msg *m, u32 i) |
| 363 | { |
| 364 | if (unlikely(msg_user(m) == MSG_FRAGMENTER)) |
| 365 | msg_set_bits(m, 5, 13, 0x7, i); |
| 366 | else if (likely(i < TIPC_SYSTEM_IMPORTANCE)) |
| 367 | msg_set_user(m, i); |
| 368 | else |
| 369 | pr_warn("Trying to set illegal importance in message\n"); |
| 370 | } |
| 371 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 372 | static inline u32 msg_prevnode(struct tipc_msg *m) |
| 373 | { |
| 374 | return msg_word(m, 3); |
| 375 | } |
| 376 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 377 | static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 378 | { |
| 379 | msg_set_word(m, 3, a); |
| 380 | } |
| 381 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 382 | static inline u32 msg_origport(struct tipc_msg *m) |
| 383 | { |
Jon Paul Maloy | 3127a02 | 2015-03-25 12:07:25 -0400 | [diff] [blame] | 384 | if (msg_user(m) == MSG_FRAGMENTER) |
| 385 | m = msg_get_wrapped(m); |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 386 | return msg_word(m, 4); |
| 387 | } |
| 388 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 389 | static inline void msg_set_origport(struct tipc_msg *m, u32 p) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 390 | { |
| 391 | msg_set_word(m, 4, p); |
| 392 | } |
| 393 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 394 | static inline u32 msg_destport(struct tipc_msg *m) |
| 395 | { |
| 396 | return msg_word(m, 5); |
| 397 | } |
| 398 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 399 | static inline void msg_set_destport(struct tipc_msg *m, u32 p) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 400 | { |
| 401 | msg_set_word(m, 5, p); |
| 402 | } |
| 403 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 404 | static inline u32 msg_mc_netid(struct tipc_msg *m) |
| 405 | { |
| 406 | return msg_word(m, 5); |
| 407 | } |
| 408 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 409 | 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] | 410 | { |
| 411 | msg_set_word(m, 5, p); |
| 412 | } |
| 413 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 414 | static inline int msg_short(struct tipc_msg *m) |
| 415 | { |
Allan Stephens | 741d9eb | 2011-05-31 15:03:18 -0400 | [diff] [blame] | 416 | return msg_hdr_sz(m) == SHORT_H_SIZE; |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | static inline u32 msg_orignode(struct tipc_msg *m) |
| 420 | { |
| 421 | if (likely(msg_short(m))) |
| 422 | return msg_prevnode(m); |
| 423 | return msg_word(m, 6); |
| 424 | } |
| 425 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 426 | static inline void msg_set_orignode(struct tipc_msg *m, u32 a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 427 | { |
| 428 | msg_set_word(m, 6, a); |
| 429 | } |
| 430 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 431 | static inline u32 msg_destnode(struct tipc_msg *m) |
| 432 | { |
| 433 | return msg_word(m, 7); |
| 434 | } |
| 435 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 436 | static inline void msg_set_destnode(struct tipc_msg *m, u32 a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 437 | { |
| 438 | msg_set_word(m, 7, a); |
| 439 | } |
| 440 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 441 | static inline u32 msg_nametype(struct tipc_msg *m) |
| 442 | { |
| 443 | return msg_word(m, 8); |
| 444 | } |
| 445 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 446 | static inline void msg_set_nametype(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 447 | { |
| 448 | msg_set_word(m, 8, n); |
| 449 | } |
| 450 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 451 | static inline u32 msg_nameinst(struct tipc_msg *m) |
| 452 | { |
| 453 | return msg_word(m, 9); |
| 454 | } |
| 455 | |
| 456 | static inline u32 msg_namelower(struct tipc_msg *m) |
| 457 | { |
| 458 | return msg_nameinst(m); |
| 459 | } |
| 460 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 461 | static inline void msg_set_namelower(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 462 | { |
| 463 | msg_set_word(m, 9, n); |
| 464 | } |
| 465 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 466 | static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 467 | { |
| 468 | msg_set_namelower(m, n); |
| 469 | } |
| 470 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 471 | static inline u32 msg_nameupper(struct tipc_msg *m) |
| 472 | { |
| 473 | return msg_word(m, 10); |
| 474 | } |
| 475 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 476 | static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 477 | { |
| 478 | msg_set_word(m, 10, n); |
| 479 | } |
| 480 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 481 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 482 | * Constants and routines used to read and write TIPC internal message headers |
| 483 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 484 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 485 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 486 | * Connection management protocol message types |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 487 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 488 | #define CONN_PROBE 0 |
| 489 | #define CONN_PROBE_REPLY 1 |
| 490 | #define CONN_ACK 2 |
| 491 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 492 | /* |
Allan Stephens | cc4c435 | 2011-04-08 10:50:52 -0400 | [diff] [blame] | 493 | * Name distributor message types |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 494 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 495 | #define PUBLICATION 0 |
| 496 | #define WITHDRAWAL 1 |
| 497 | |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 498 | /* |
| 499 | * Segmentation message types |
| 500 | */ |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 501 | #define FIRST_FRAGMENT 0 |
| 502 | #define FRAGMENT 1 |
| 503 | #define LAST_FRAGMENT 2 |
| 504 | |
| 505 | /* |
| 506 | * Link management protocol message types |
| 507 | */ |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 508 | #define STATE_MSG 0 |
| 509 | #define RESET_MSG 1 |
| 510 | #define ACTIVATE_MSG 2 |
| 511 | |
| 512 | /* |
| 513 | * Changeover tunnel message types |
| 514 | */ |
| 515 | #define DUPLICATE_MSG 0 |
| 516 | #define ORIGINAL_MSG 1 |
| 517 | |
| 518 | /* |
| 519 | * Config protocol message types |
| 520 | */ |
Allan Stephens | 92138d1 | 2011-04-08 11:04:15 -0400 | [diff] [blame] | 521 | #define DSC_REQ_MSG 0 |
| 522 | #define DSC_RESP_MSG 1 |
| 523 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 524 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 525 | * Word 1 |
| 526 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 527 | static inline u32 msg_seq_gap(struct tipc_msg *m) |
| 528 | { |
Allan Stephens | bd78453 | 2008-06-04 17:47:30 -0700 | [diff] [blame] | 529 | return msg_bits(m, 1, 16, 0x1fff); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) |
| 533 | { |
Allan Stephens | bd78453 | 2008-06-04 17:47:30 -0700 | [diff] [blame] | 534 | msg_set_bits(m, 1, 16, 0x1fff, n); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 535 | } |
| 536 | |
Allan Stephens | fc0eea6 | 2011-10-28 16:26:41 -0400 | [diff] [blame] | 537 | static inline u32 msg_node_sig(struct tipc_msg *m) |
| 538 | { |
| 539 | return msg_bits(m, 1, 0, 0xffff); |
| 540 | } |
| 541 | |
| 542 | static inline void msg_set_node_sig(struct tipc_msg *m, u32 n) |
| 543 | { |
| 544 | msg_set_bits(m, 1, 0, 0xffff, n); |
| 545 | } |
| 546 | |
Jon Paul Maloy | 7764d6e | 2015-03-13 16:08:05 -0400 | [diff] [blame] | 547 | static inline u32 msg_node_capabilities(struct tipc_msg *m) |
| 548 | { |
| 549 | return msg_bits(m, 1, 15, 0x1fff); |
| 550 | } |
| 551 | |
| 552 | static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n) |
| 553 | { |
| 554 | msg_set_bits(m, 1, 15, 0x1fff, n); |
| 555 | } |
| 556 | |
Jon Paul Maloy | 8b4ed86 | 2015-03-25 12:07:26 -0400 | [diff] [blame^] | 557 | static inline bool msg_dup(struct tipc_msg *m) |
| 558 | { |
| 559 | if (likely(msg_user(m) != CHANGEOVER_PROTOCOL)) |
| 560 | return false; |
| 561 | if (msg_type(m) != DUPLICATE_MSG) |
| 562 | return false; |
| 563 | return true; |
| 564 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 565 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 566 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 567 | * Word 2 |
| 568 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 569 | static inline u32 msg_dest_domain(struct tipc_msg *m) |
| 570 | { |
| 571 | return msg_word(m, 2); |
| 572 | } |
| 573 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 574 | 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] | 575 | { |
| 576 | msg_set_word(m, 2, n); |
| 577 | } |
| 578 | |
| 579 | static inline u32 msg_bcgap_after(struct tipc_msg *m) |
| 580 | { |
| 581 | return msg_bits(m, 2, 16, 0xffff); |
| 582 | } |
| 583 | |
| 584 | static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n) |
| 585 | { |
| 586 | msg_set_bits(m, 2, 16, 0xffff, n); |
| 587 | } |
| 588 | |
| 589 | static inline u32 msg_bcgap_to(struct tipc_msg *m) |
| 590 | { |
| 591 | return msg_bits(m, 2, 0, 0xffff); |
| 592 | } |
| 593 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 594 | 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] | 595 | { |
| 596 | msg_set_bits(m, 2, 0, 0xffff, n); |
| 597 | } |
| 598 | |
| 599 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 600 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 601 | * Word 4 |
| 602 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 603 | static inline u32 msg_last_bcast(struct tipc_msg *m) |
| 604 | { |
| 605 | return msg_bits(m, 4, 16, 0xffff); |
| 606 | } |
| 607 | |
| 608 | static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n) |
| 609 | { |
| 610 | msg_set_bits(m, 4, 16, 0xffff, n); |
| 611 | } |
| 612 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 613 | static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) |
| 614 | { |
| 615 | msg_set_bits(m, 4, 16, 0xffff, n); |
| 616 | } |
| 617 | |
| 618 | |
| 619 | static inline u32 msg_next_sent(struct tipc_msg *m) |
| 620 | { |
| 621 | return msg_bits(m, 4, 0, 0xffff); |
| 622 | } |
| 623 | |
| 624 | static inline void msg_set_next_sent(struct tipc_msg *m, u32 n) |
| 625 | { |
| 626 | msg_set_bits(m, 4, 0, 0xffff, n); |
| 627 | } |
| 628 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 629 | static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n) |
| 630 | { |
| 631 | msg_set_bits(m, 4, 0, 0xffff, n); |
| 632 | } |
| 633 | |
| 634 | static inline u32 msg_bc_netid(struct tipc_msg *m) |
| 635 | { |
| 636 | return msg_word(m, 4); |
| 637 | } |
| 638 | |
| 639 | static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id) |
| 640 | { |
| 641 | msg_set_word(m, 4, id); |
| 642 | } |
| 643 | |
| 644 | static inline u32 msg_link_selector(struct tipc_msg *m) |
| 645 | { |
| 646 | return msg_bits(m, 4, 0, 1); |
| 647 | } |
| 648 | |
| 649 | static inline void msg_set_link_selector(struct tipc_msg *m, u32 n) |
| 650 | { |
Allan Stephens | 7eb878e | 2011-05-25 13:28:27 -0400 | [diff] [blame] | 651 | msg_set_bits(m, 4, 0, 1, n); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 652 | } |
| 653 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 654 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 655 | * Word 5 |
| 656 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 657 | static inline u32 msg_session(struct tipc_msg *m) |
| 658 | { |
| 659 | return msg_bits(m, 5, 16, 0xffff); |
| 660 | } |
| 661 | |
| 662 | static inline void msg_set_session(struct tipc_msg *m, u32 n) |
| 663 | { |
| 664 | msg_set_bits(m, 5, 16, 0xffff, n); |
| 665 | } |
| 666 | |
| 667 | static inline u32 msg_probe(struct tipc_msg *m) |
| 668 | { |
| 669 | return msg_bits(m, 5, 0, 1); |
| 670 | } |
| 671 | |
| 672 | static inline void msg_set_probe(struct tipc_msg *m, u32 val) |
| 673 | { |
Allan Stephens | 7eb878e | 2011-05-25 13:28:27 -0400 | [diff] [blame] | 674 | msg_set_bits(m, 5, 0, 1, val); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 675 | } |
| 676 | |
| 677 | static inline char msg_net_plane(struct tipc_msg *m) |
| 678 | { |
| 679 | return msg_bits(m, 5, 1, 7) + 'A'; |
| 680 | } |
| 681 | |
| 682 | static inline void msg_set_net_plane(struct tipc_msg *m, char n) |
| 683 | { |
| 684 | msg_set_bits(m, 5, 1, 7, (n - 'A')); |
| 685 | } |
| 686 | |
| 687 | static inline u32 msg_linkprio(struct tipc_msg *m) |
| 688 | { |
| 689 | return msg_bits(m, 5, 4, 0x1f); |
| 690 | } |
| 691 | |
| 692 | static inline void msg_set_linkprio(struct tipc_msg *m, u32 n) |
| 693 | { |
| 694 | msg_set_bits(m, 5, 4, 0x1f, n); |
| 695 | } |
| 696 | |
| 697 | static inline u32 msg_bearer_id(struct tipc_msg *m) |
| 698 | { |
| 699 | return msg_bits(m, 5, 9, 0x7); |
| 700 | } |
| 701 | |
| 702 | static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n) |
| 703 | { |
| 704 | msg_set_bits(m, 5, 9, 0x7, n); |
| 705 | } |
| 706 | |
| 707 | static inline u32 msg_redundant_link(struct tipc_msg *m) |
| 708 | { |
| 709 | return msg_bits(m, 5, 12, 0x1); |
| 710 | } |
| 711 | |
Allan Stephens | 77f167f | 2011-02-28 15:30:20 -0500 | [diff] [blame] | 712 | 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] | 713 | { |
Allan Stephens | 77f167f | 2011-02-28 15:30:20 -0500 | [diff] [blame] | 714 | msg_set_bits(m, 5, 12, 0x1, r); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 715 | } |
| 716 | |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 717 | static inline char *msg_media_addr(struct tipc_msg *m) |
| 718 | { |
Erik Hugne | 91e2eb5 | 2015-02-27 08:56:57 +0100 | [diff] [blame] | 719 | return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET]; |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 720 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 721 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 722 | /* |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 723 | * Word 9 |
| 724 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 725 | static inline u32 msg_msgcnt(struct tipc_msg *m) |
| 726 | { |
| 727 | return msg_bits(m, 9, 16, 0xffff); |
| 728 | } |
| 729 | |
| 730 | static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n) |
| 731 | { |
| 732 | msg_set_bits(m, 9, 16, 0xffff, n); |
| 733 | } |
| 734 | |
| 735 | static inline u32 msg_bcast_tag(struct tipc_msg *m) |
| 736 | { |
| 737 | return msg_bits(m, 9, 16, 0xffff); |
| 738 | } |
| 739 | |
| 740 | static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n) |
| 741 | { |
| 742 | msg_set_bits(m, 9, 16, 0xffff, n); |
| 743 | } |
| 744 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 745 | static inline u32 msg_max_pkt(struct tipc_msg *m) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 746 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 747 | return msg_bits(m, 9, 16, 0xffff) * 4; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 748 | } |
| 749 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 750 | 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] | 751 | { |
| 752 | msg_set_bits(m, 9, 16, 0xffff, (n / 4)); |
| 753 | } |
| 754 | |
| 755 | static inline u32 msg_link_tolerance(struct tipc_msg *m) |
| 756 | { |
| 757 | return msg_bits(m, 9, 0, 0xffff); |
| 758 | } |
| 759 | |
| 760 | static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) |
| 761 | { |
| 762 | msg_set_bits(m, 9, 0, 0xffff, n); |
| 763 | } |
| 764 | |
Ying Xue | 859fc7c | 2015-01-09 15:27:01 +0800 | [diff] [blame] | 765 | struct sk_buff *tipc_buf_acquire(u32 size); |
Jon Paul Maloy | cf2157f | 2015-03-13 16:08:06 -0400 | [diff] [blame] | 766 | bool tipc_msg_validate(struct sk_buff *skb); |
Jon Paul Maloy | c589863 | 2015-02-05 08:36:36 -0500 | [diff] [blame] | 767 | 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] | 768 | int err); |
Jon Paul Maloy | c589863 | 2015-02-05 08:36:36 -0500 | [diff] [blame] | 769 | 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] | 770 | u32 hsize, u32 destnode); |
Jon Paul Maloy | e3a7756 | 2015-02-05 08:36:39 -0500 | [diff] [blame] | 771 | struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz, |
| 772 | uint data_sz, u32 dnode, u32 onode, |
| 773 | u32 dport, u32 oport, int errcode); |
Jon Paul Maloy | 37e2216 | 2014-05-14 05:39:12 -0400 | [diff] [blame] | 774 | 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] | 775 | bool tipc_msg_bundle(struct sk_buff *bskb, struct sk_buff *skb, u32 mtu); |
| 776 | |
| 777 | 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] | 778 | 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] | 779 | int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 780 | int offset, int dsz, int mtu, struct sk_buff_head *list); |
Jon Paul Maloy | e3a7756 | 2015-02-05 08:36:39 -0500 | [diff] [blame] | 781 | bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, u32 *dnode, |
| 782 | int *err); |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 783 | struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list); |
Jon Paul Maloy | 078bec8 | 2014-07-16 20:41:00 -0400 | [diff] [blame] | 784 | |
Jon Paul Maloy | cb1b728 | 2015-02-05 08:36:44 -0500 | [diff] [blame] | 785 | /* tipc_skb_peek(): peek and reserve first buffer in list |
| 786 | * @list: list to be peeked in |
| 787 | * Returns pointer to first buffer in list, if any |
| 788 | */ |
| 789 | static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list, |
| 790 | spinlock_t *lock) |
| 791 | { |
| 792 | struct sk_buff *skb; |
| 793 | |
| 794 | spin_lock_bh(lock); |
| 795 | skb = skb_peek(list); |
| 796 | if (skb) |
| 797 | skb_get(skb); |
| 798 | spin_unlock_bh(lock); |
| 799 | return skb; |
| 800 | } |
| 801 | |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 802 | /* tipc_skb_peek_port(): find a destination port, ignoring all destinations |
| 803 | * up to and including 'filter'. |
| 804 | * Note: ignoring previously tried destinations minimizes the risk of |
| 805 | * contention on the socket lock |
| 806 | * @list: list to be peeked in |
| 807 | * @filter: last destination to be ignored from search |
| 808 | * Returns a destination port number, of applicable. |
| 809 | */ |
| 810 | static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter) |
| 811 | { |
| 812 | struct sk_buff *skb; |
| 813 | u32 dport = 0; |
| 814 | bool ignore = true; |
| 815 | |
| 816 | spin_lock_bh(&list->lock); |
| 817 | skb_queue_walk(list, skb) { |
| 818 | dport = msg_destport(buf_msg(skb)); |
| 819 | if (!filter || skb_queue_is_last(list, skb)) |
| 820 | break; |
| 821 | if (dport == filter) |
| 822 | ignore = false; |
| 823 | else if (!ignore) |
| 824 | break; |
| 825 | } |
| 826 | spin_unlock_bh(&list->lock); |
| 827 | return dport; |
| 828 | } |
| 829 | |
| 830 | /* tipc_skb_dequeue(): unlink first buffer with dest 'dport' from list |
| 831 | * @list: list to be unlinked from |
| 832 | * @dport: selection criteria for buffer to unlink |
| 833 | */ |
| 834 | static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list, |
| 835 | u32 dport) |
| 836 | { |
| 837 | struct sk_buff *_skb, *tmp, *skb = NULL; |
| 838 | |
| 839 | spin_lock_bh(&list->lock); |
| 840 | skb_queue_walk_safe(list, _skb, tmp) { |
| 841 | if (msg_destport(buf_msg(_skb)) == dport) { |
| 842 | __skb_unlink(_skb, list); |
| 843 | skb = _skb; |
| 844 | break; |
| 845 | } |
| 846 | } |
| 847 | spin_unlock_bh(&list->lock); |
| 848 | return skb; |
| 849 | } |
| 850 | |
| 851 | /* tipc_skb_queue_tail(): add buffer to tail of list; |
| 852 | * @list: list to be appended to |
| 853 | * @skb: buffer to append. Always appended |
| 854 | * @dport: the destination port of the buffer |
| 855 | * returns true if dport differs from previous destination |
| 856 | */ |
| 857 | static inline bool tipc_skb_queue_tail(struct sk_buff_head *list, |
| 858 | struct sk_buff *skb, u32 dport) |
| 859 | { |
| 860 | struct sk_buff *_skb = NULL; |
| 861 | bool rv = false; |
| 862 | |
| 863 | spin_lock_bh(&list->lock); |
| 864 | _skb = skb_peek_tail(list); |
| 865 | if (!_skb || (msg_destport(buf_msg(_skb)) != dport) || |
| 866 | (skb_queue_len(list) > 32)) |
| 867 | rv = true; |
| 868 | __skb_queue_tail(list, skb); |
| 869 | spin_unlock_bh(&list->lock); |
| 870 | return rv; |
| 871 | } |
| 872 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 873 | #endif |