Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/msg.c: TIPC message header 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 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 5 | * Copyright (c) 2005, 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 | #include "core.h" |
| 38 | #include "addr.h" |
| 39 | #include "dbg.h" |
| 40 | #include "msg.h" |
| 41 | #include "bearer.h" |
| 42 | |
Allan Stephens | 23461e8 | 2010-05-11 14:30:18 +0000 | [diff] [blame] | 43 | u32 tipc_msg_tot_importance(struct tipc_msg *m) |
| 44 | { |
| 45 | if (likely(msg_isdata(m))) { |
| 46 | if (likely(msg_orignode(m) == tipc_own_addr)) |
| 47 | return msg_importance(m); |
| 48 | return msg_importance(m) + 4; |
| 49 | } |
| 50 | if ((msg_user(m) == MSG_FRAGMENTER) && |
| 51 | (msg_type(m) == FIRST_FRAGMENT)) |
| 52 | return msg_importance(msg_get_wrapped(m)); |
| 53 | return msg_importance(m); |
| 54 | } |
| 55 | |
| 56 | |
| 57 | void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, |
| 58 | u32 hsize, u32 destnode) |
| 59 | { |
| 60 | memset(m, 0, hsize); |
| 61 | msg_set_version(m); |
| 62 | msg_set_user(m, user); |
| 63 | msg_set_hdr_sz(m, hsize); |
| 64 | msg_set_size(m, hsize); |
| 65 | msg_set_prevnode(m, tipc_own_addr); |
| 66 | msg_set_type(m, type); |
| 67 | if (!msg_short(m)) { |
| 68 | msg_set_orignode(m, tipc_own_addr); |
| 69 | msg_set_destnode(m, destnode); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * tipc_msg_calc_data_size - determine total data size for message |
| 75 | */ |
| 76 | |
| 77 | int tipc_msg_calc_data_size(struct iovec const *msg_sect, u32 num_sect) |
| 78 | { |
| 79 | int dsz = 0; |
| 80 | int i; |
| 81 | |
| 82 | for (i = 0; i < num_sect; i++) |
| 83 | dsz += msg_sect[i].iov_len; |
| 84 | return dsz; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * tipc_msg_build - create message using specified header and data |
| 89 | * |
| 90 | * Note: Caller must not hold any locks in case copy_from_user() is interrupted! |
| 91 | * |
| 92 | * Returns message data size or errno |
| 93 | */ |
| 94 | |
| 95 | int tipc_msg_build(struct tipc_msg *hdr, |
| 96 | struct iovec const *msg_sect, u32 num_sect, |
| 97 | int max_size, int usrmem, struct sk_buff** buf) |
| 98 | { |
| 99 | int dsz, sz, hsz, pos, res, cnt; |
| 100 | |
| 101 | dsz = tipc_msg_calc_data_size(msg_sect, num_sect); |
| 102 | if (unlikely(dsz > TIPC_MAX_USER_MSG_SIZE)) { |
| 103 | *buf = NULL; |
| 104 | return -EINVAL; |
| 105 | } |
| 106 | |
| 107 | pos = hsz = msg_hdr_sz(hdr); |
| 108 | sz = hsz + dsz; |
| 109 | msg_set_size(hdr, sz); |
| 110 | if (unlikely(sz > max_size)) { |
| 111 | *buf = NULL; |
| 112 | return dsz; |
| 113 | } |
| 114 | |
stephen hemminger | 31e3c3f | 2010-10-13 13:20:35 +0000 | [diff] [blame] | 115 | *buf = tipc_buf_acquire(sz); |
Allan Stephens | 23461e8 | 2010-05-11 14:30:18 +0000 | [diff] [blame] | 116 | if (!(*buf)) |
| 117 | return -ENOMEM; |
| 118 | skb_copy_to_linear_data(*buf, hdr, hsz); |
| 119 | for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) { |
| 120 | if (likely(usrmem)) |
| 121 | res = !copy_from_user((*buf)->data + pos, |
| 122 | msg_sect[cnt].iov_base, |
| 123 | msg_sect[cnt].iov_len); |
| 124 | else |
| 125 | skb_copy_to_linear_data_offset(*buf, pos, |
| 126 | msg_sect[cnt].iov_base, |
| 127 | msg_sect[cnt].iov_len); |
| 128 | pos += msg_sect[cnt].iov_len; |
| 129 | } |
| 130 | if (likely(res)) |
| 131 | return dsz; |
| 132 | |
| 133 | buf_discard(*buf); |
| 134 | *buf = NULL; |
| 135 | return -EFAULT; |
| 136 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 137 | |
Allan Stephens | 48c9713 | 2008-05-05 01:24:06 -0700 | [diff] [blame] | 138 | #ifdef CONFIG_TIPC_DEBUG |
| 139 | |
| 140 | void tipc_msg_dbg(struct print_buf *buf, struct tipc_msg *msg, const char *str) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 141 | { |
| 142 | u32 usr = msg_user(msg); |
| 143 | tipc_printf(buf, str); |
| 144 | |
| 145 | switch (usr) { |
| 146 | case MSG_BUNDLER: |
| 147 | tipc_printf(buf, "BNDL::"); |
| 148 | tipc_printf(buf, "MSGS(%u):", msg_msgcnt(msg)); |
| 149 | break; |
| 150 | case BCAST_PROTOCOL: |
| 151 | tipc_printf(buf, "BCASTP::"); |
| 152 | break; |
| 153 | case MSG_FRAGMENTER: |
| 154 | tipc_printf(buf, "FRAGM::"); |
| 155 | switch (msg_type(msg)) { |
| 156 | case FIRST_FRAGMENT: |
| 157 | tipc_printf(buf, "FIRST:"); |
| 158 | break; |
| 159 | case FRAGMENT: |
| 160 | tipc_printf(buf, "BODY:"); |
| 161 | break; |
| 162 | case LAST_FRAGMENT: |
| 163 | tipc_printf(buf, "LAST:"); |
| 164 | break; |
| 165 | default: |
| 166 | tipc_printf(buf, "UNKNOWN:%x",msg_type(msg)); |
| 167 | |
| 168 | } |
| 169 | tipc_printf(buf, "NO(%u/%u):",msg_long_msgno(msg), |
| 170 | msg_fragm_no(msg)); |
| 171 | break; |
Allan Stephens | 06d82c9 | 2008-03-06 15:06:55 -0800 | [diff] [blame] | 172 | case TIPC_LOW_IMPORTANCE: |
| 173 | case TIPC_MEDIUM_IMPORTANCE: |
| 174 | case TIPC_HIGH_IMPORTANCE: |
| 175 | case TIPC_CRITICAL_IMPORTANCE: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 176 | tipc_printf(buf, "DAT%u:", msg_user(msg)); |
| 177 | if (msg_short(msg)) { |
| 178 | tipc_printf(buf, "CON:"); |
| 179 | break; |
| 180 | } |
| 181 | switch (msg_type(msg)) { |
| 182 | case TIPC_CONN_MSG: |
| 183 | tipc_printf(buf, "CON:"); |
| 184 | break; |
| 185 | case TIPC_MCAST_MSG: |
| 186 | tipc_printf(buf, "MCST:"); |
| 187 | break; |
| 188 | case TIPC_NAMED_MSG: |
| 189 | tipc_printf(buf, "NAM:"); |
| 190 | break; |
| 191 | case TIPC_DIRECT_MSG: |
| 192 | tipc_printf(buf, "DIR:"); |
| 193 | break; |
| 194 | default: |
| 195 | tipc_printf(buf, "UNKNOWN TYPE %u",msg_type(msg)); |
| 196 | } |
| 197 | if (msg_routed(msg) && !msg_non_seq(msg)) |
| 198 | tipc_printf(buf, "ROUT:"); |
| 199 | if (msg_reroute_cnt(msg)) |
| 200 | tipc_printf(buf, "REROUTED(%u):", |
| 201 | msg_reroute_cnt(msg)); |
| 202 | break; |
| 203 | case NAME_DISTRIBUTOR: |
| 204 | tipc_printf(buf, "NMD::"); |
| 205 | switch (msg_type(msg)) { |
| 206 | case PUBLICATION: |
| 207 | tipc_printf(buf, "PUBL(%u):", (msg_size(msg) - msg_hdr_sz(msg)) / 20); /* Items */ |
| 208 | break; |
| 209 | case WITHDRAWAL: |
| 210 | tipc_printf(buf, "WDRW:"); |
| 211 | break; |
| 212 | default: |
| 213 | tipc_printf(buf, "UNKNOWN:%x",msg_type(msg)); |
| 214 | } |
| 215 | if (msg_routed(msg)) |
| 216 | tipc_printf(buf, "ROUT:"); |
| 217 | if (msg_reroute_cnt(msg)) |
| 218 | tipc_printf(buf, "REROUTED(%u):", |
| 219 | msg_reroute_cnt(msg)); |
| 220 | break; |
| 221 | case CONN_MANAGER: |
| 222 | tipc_printf(buf, "CONN_MNG:"); |
| 223 | switch (msg_type(msg)) { |
| 224 | case CONN_PROBE: |
| 225 | tipc_printf(buf, "PROBE:"); |
| 226 | break; |
| 227 | case CONN_PROBE_REPLY: |
| 228 | tipc_printf(buf, "PROBE_REPLY:"); |
| 229 | break; |
| 230 | case CONN_ACK: |
| 231 | tipc_printf(buf, "CONN_ACK:"); |
| 232 | tipc_printf(buf, "ACK(%u):",msg_msgcnt(msg)); |
| 233 | break; |
| 234 | default: |
| 235 | tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg)); |
| 236 | } |
| 237 | if (msg_routed(msg)) |
| 238 | tipc_printf(buf, "ROUT:"); |
| 239 | if (msg_reroute_cnt(msg)) |
| 240 | tipc_printf(buf, "REROUTED(%u):",msg_reroute_cnt(msg)); |
| 241 | break; |
| 242 | case LINK_PROTOCOL: |
| 243 | tipc_printf(buf, "PROT:TIM(%u):",msg_timestamp(msg)); |
| 244 | switch (msg_type(msg)) { |
| 245 | case STATE_MSG: |
| 246 | tipc_printf(buf, "STATE:"); |
| 247 | tipc_printf(buf, "%s:",msg_probe(msg) ? "PRB" :""); |
| 248 | tipc_printf(buf, "NXS(%u):",msg_next_sent(msg)); |
| 249 | tipc_printf(buf, "GAP(%u):",msg_seq_gap(msg)); |
| 250 | tipc_printf(buf, "LSTBC(%u):",msg_last_bcast(msg)); |
| 251 | break; |
| 252 | case RESET_MSG: |
| 253 | tipc_printf(buf, "RESET:"); |
| 254 | if (msg_size(msg) != msg_hdr_sz(msg)) |
| 255 | tipc_printf(buf, "BEAR:%s:",msg_data(msg)); |
| 256 | break; |
| 257 | case ACTIVATE_MSG: |
| 258 | tipc_printf(buf, "ACTIVATE:"); |
| 259 | break; |
| 260 | default: |
| 261 | tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg)); |
| 262 | } |
| 263 | tipc_printf(buf, "PLANE(%c):",msg_net_plane(msg)); |
| 264 | tipc_printf(buf, "SESS(%u):",msg_session(msg)); |
| 265 | break; |
| 266 | case CHANGEOVER_PROTOCOL: |
| 267 | tipc_printf(buf, "TUNL:"); |
| 268 | switch (msg_type(msg)) { |
| 269 | case DUPLICATE_MSG: |
| 270 | tipc_printf(buf, "DUPL:"); |
| 271 | break; |
| 272 | case ORIGINAL_MSG: |
| 273 | tipc_printf(buf, "ORIG:"); |
| 274 | tipc_printf(buf, "EXP(%u)",msg_msgcnt(msg)); |
| 275 | break; |
| 276 | default: |
| 277 | tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg)); |
| 278 | } |
| 279 | break; |
| 280 | case ROUTE_DISTRIBUTOR: |
| 281 | tipc_printf(buf, "ROUTING_MNG:"); |
| 282 | switch (msg_type(msg)) { |
| 283 | case EXT_ROUTING_TABLE: |
| 284 | tipc_printf(buf, "EXT_TBL:"); |
| 285 | tipc_printf(buf, "TO:%x:",msg_remote_node(msg)); |
| 286 | break; |
| 287 | case LOCAL_ROUTING_TABLE: |
| 288 | tipc_printf(buf, "LOCAL_TBL:"); |
| 289 | tipc_printf(buf, "TO:%x:",msg_remote_node(msg)); |
| 290 | break; |
| 291 | case SLAVE_ROUTING_TABLE: |
| 292 | tipc_printf(buf, "DP_TBL:"); |
| 293 | tipc_printf(buf, "TO:%x:",msg_remote_node(msg)); |
| 294 | break; |
| 295 | case ROUTE_ADDITION: |
| 296 | tipc_printf(buf, "ADD:"); |
| 297 | tipc_printf(buf, "TO:%x:",msg_remote_node(msg)); |
| 298 | break; |
| 299 | case ROUTE_REMOVAL: |
| 300 | tipc_printf(buf, "REMOVE:"); |
| 301 | tipc_printf(buf, "TO:%x:",msg_remote_node(msg)); |
| 302 | break; |
| 303 | default: |
| 304 | tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg)); |
| 305 | } |
| 306 | break; |
| 307 | case LINK_CONFIG: |
| 308 | tipc_printf(buf, "CFG:"); |
| 309 | switch (msg_type(msg)) { |
| 310 | case DSC_REQ_MSG: |
| 311 | tipc_printf(buf, "DSC_REQ:"); |
| 312 | break; |
| 313 | case DSC_RESP_MSG: |
| 314 | tipc_printf(buf, "DSC_RESP:"); |
| 315 | break; |
| 316 | default: |
| 317 | tipc_printf(buf, "UNKNOWN TYPE:%x:",msg_type(msg)); |
| 318 | break; |
| 319 | } |
| 320 | break; |
| 321 | default: |
| 322 | tipc_printf(buf, "UNKNOWN USER:"); |
| 323 | } |
| 324 | |
| 325 | switch (usr) { |
| 326 | case CONN_MANAGER: |
Allan Stephens | 06d82c9 | 2008-03-06 15:06:55 -0800 | [diff] [blame] | 327 | case TIPC_LOW_IMPORTANCE: |
| 328 | case TIPC_MEDIUM_IMPORTANCE: |
| 329 | case TIPC_HIGH_IMPORTANCE: |
| 330 | case TIPC_CRITICAL_IMPORTANCE: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 331 | switch (msg_errcode(msg)) { |
| 332 | case TIPC_OK: |
| 333 | break; |
| 334 | case TIPC_ERR_NO_NAME: |
| 335 | tipc_printf(buf, "NO_NAME:"); |
| 336 | break; |
| 337 | case TIPC_ERR_NO_PORT: |
| 338 | tipc_printf(buf, "NO_PORT:"); |
| 339 | break; |
| 340 | case TIPC_ERR_NO_NODE: |
| 341 | tipc_printf(buf, "NO_PROC:"); |
| 342 | break; |
| 343 | case TIPC_ERR_OVERLOAD: |
| 344 | tipc_printf(buf, "OVERLOAD:"); |
| 345 | break; |
| 346 | case TIPC_CONN_SHUTDOWN: |
| 347 | tipc_printf(buf, "SHUTDOWN:"); |
| 348 | break; |
| 349 | default: |
| 350 | tipc_printf(buf, "UNKNOWN ERROR(%x):", |
| 351 | msg_errcode(msg)); |
| 352 | } |
| 353 | default:{} |
| 354 | } |
| 355 | |
| 356 | tipc_printf(buf, "HZ(%u):", msg_hdr_sz(msg)); |
| 357 | tipc_printf(buf, "SZ(%u):", msg_size(msg)); |
| 358 | tipc_printf(buf, "SQNO(%u):", msg_seqno(msg)); |
| 359 | |
| 360 | if (msg_non_seq(msg)) |
| 361 | tipc_printf(buf, "NOSEQ:"); |
| 362 | else { |
| 363 | tipc_printf(buf, "ACK(%u):", msg_ack(msg)); |
| 364 | } |
| 365 | tipc_printf(buf, "BACK(%u):", msg_bcast_ack(msg)); |
| 366 | tipc_printf(buf, "PRND(%x)", msg_prevnode(msg)); |
| 367 | |
| 368 | if (msg_isdata(msg)) { |
| 369 | if (msg_named(msg)) { |
| 370 | tipc_printf(buf, "NTYP(%u):", msg_nametype(msg)); |
| 371 | tipc_printf(buf, "NINST(%u)", msg_nameinst(msg)); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | if ((usr != LINK_PROTOCOL) && (usr != LINK_CONFIG) && |
| 376 | (usr != MSG_BUNDLER)) { |
| 377 | if (!msg_short(msg)) { |
| 378 | tipc_printf(buf, ":ORIG(%x:%u):", |
| 379 | msg_orignode(msg), msg_origport(msg)); |
| 380 | tipc_printf(buf, ":DEST(%x:%u):", |
| 381 | msg_destnode(msg), msg_destport(msg)); |
| 382 | } else { |
| 383 | tipc_printf(buf, ":OPRT(%u):", msg_origport(msg)); |
| 384 | tipc_printf(buf, ":DPRT(%u):", msg_destport(msg)); |
| 385 | } |
| 386 | if (msg_routed(msg) && !msg_non_seq(msg)) |
| 387 | tipc_printf(buf, ":TSEQN(%u)", msg_transp_seqno(msg)); |
| 388 | } |
| 389 | if (msg_user(msg) == NAME_DISTRIBUTOR) { |
| 390 | tipc_printf(buf, ":ONOD(%x):", msg_orignode(msg)); |
| 391 | tipc_printf(buf, ":DNOD(%x):", msg_destnode(msg)); |
| 392 | if (msg_routed(msg)) { |
| 393 | tipc_printf(buf, ":CSEQN(%u)", msg_transp_seqno(msg)); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | if (msg_user(msg) == LINK_CONFIG) { |
| 398 | u32* raw = (u32*)msg; |
| 399 | struct tipc_media_addr* orig = (struct tipc_media_addr*)&raw[5]; |
| 400 | tipc_printf(buf, ":REQL(%u):", msg_req_links(msg)); |
| 401 | tipc_printf(buf, ":DDOM(%x):", msg_dest_domain(msg)); |
| 402 | tipc_printf(buf, ":NETID(%u):", msg_bc_netid(msg)); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 403 | tipc_media_addr_printf(buf, orig); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 404 | } |
| 405 | if (msg_user(msg) == BCAST_PROTOCOL) { |
| 406 | tipc_printf(buf, "BCNACK:AFTER(%u):", msg_bcgap_after(msg)); |
| 407 | tipc_printf(buf, "TO(%u):", msg_bcgap_to(msg)); |
| 408 | } |
| 409 | tipc_printf(buf, "\n"); |
| 410 | if ((usr == CHANGEOVER_PROTOCOL) && (msg_msgcnt(msg))) { |
Allan Stephens | 48c9713 | 2008-05-05 01:24:06 -0700 | [diff] [blame] | 411 | tipc_msg_dbg(buf, msg_get_wrapped(msg), " /"); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 412 | } |
| 413 | if ((usr == MSG_FRAGMENTER) && (msg_type(msg) == FIRST_FRAGMENT)) { |
Allan Stephens | 48c9713 | 2008-05-05 01:24:06 -0700 | [diff] [blame] | 414 | tipc_msg_dbg(buf, msg_get_wrapped(msg), " /"); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 415 | } |
| 416 | } |
Allan Stephens | 48c9713 | 2008-05-05 01:24:06 -0700 | [diff] [blame] | 417 | |
| 418 | #endif |