1/* 2 * Copyright (c) 2014, Ericsson AB 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the names of the copyright holders nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * Alternatively, this software may be distributed under the terms of the 18 * GNU General Public License ("GPL") version 2 as published by the Free 19 * Software Foundation. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34#include "core.h" 35#include "bearer.h" 36#include "link.h" 37#include "name_table.h" 38#include "socket.h" 39#include "node.h" 40#include "net.h" 41#include <net/genetlink.h> 42#include <linux/tipc_config.h> 43 44/* The legacy API had an artificial message length limit called 45 * ULTRA_STRING_MAX_LEN. 46 */ 47#define ULTRA_STRING_MAX_LEN 32768 48 49#define TIPC_SKB_MAX TLV_SPACE(ULTRA_STRING_MAX_LEN) 50 51#define REPLY_TRUNCATED "<truncated>\n" 52 53struct tipc_nl_compat_msg { 54 u16 cmd; 55 int rep_type; 56 int rep_size; 57 int req_type; 58 int req_size; 59 struct net *net; 60 struct sk_buff *rep; 61 struct tlv_desc *req; 62 struct sock *dst_sk; 63}; 64 65struct tipc_nl_compat_cmd_dump { 66 int (*header)(struct tipc_nl_compat_msg *); 67 int (*dumpit)(struct sk_buff *, struct netlink_callback *); 68 int (*format)(struct tipc_nl_compat_msg *msg, struct nlattr **attrs); 69}; 70 71struct tipc_nl_compat_cmd_doit { 72 int (*doit)(struct sk_buff *skb, struct genl_info *info); 73 int (*transcode)(struct tipc_nl_compat_cmd_doit *cmd, 74 struct sk_buff *skb, struct tipc_nl_compat_msg *msg); 75}; 76 77static int tipc_skb_tailroom(struct sk_buff *skb) 78{ 79 int tailroom; 80 int limit; 81 82 tailroom = skb_tailroom(skb); 83 limit = TIPC_SKB_MAX - skb->len; 84 85 if (tailroom < limit) 86 return tailroom; 87 88 return limit; 89} 90 91static inline int TLV_GET_DATA_LEN(struct tlv_desc *tlv) 92{ 93 return TLV_GET_LEN(tlv) - TLV_SPACE(0); 94} 95 96static int tipc_add_tlv(struct sk_buff *skb, u16 type, void *data, u16 len) 97{ 98 struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(skb); 99 100 if (tipc_skb_tailroom(skb) < TLV_SPACE(len)) 101 return -EMSGSIZE; 102 103 skb_put(skb, TLV_SPACE(len)); 104 memset(tlv, 0, TLV_SPACE(len)); 105 tlv->tlv_type = htons(type); 106 tlv->tlv_len = htons(TLV_LENGTH(len)); 107 if (len && data) 108 memcpy(TLV_DATA(tlv), data, len); 109 110 return 0; 111} 112 113static void tipc_tlv_init(struct sk_buff *skb, u16 type) 114{ 115 struct tlv_desc *tlv = (struct tlv_desc *)skb->data; 116 117 TLV_SET_LEN(tlv, 0); 118 TLV_SET_TYPE(tlv, type); 119 skb_put(skb, sizeof(struct tlv_desc)); 120} 121 122static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...) 123{ 124 int n; 125 u16 len; 126 u32 rem; 127 char *buf; 128 struct tlv_desc *tlv; 129 va_list args; 130 131 rem = tipc_skb_tailroom(skb); 132 133 tlv = (struct tlv_desc *)skb->data; 134 len = TLV_GET_LEN(tlv); 135 buf = TLV_DATA(tlv) + len; 136 137 va_start(args, fmt); 138 n = vscnprintf(buf, rem, fmt, args); 139 va_end(args); 140 141 TLV_SET_LEN(tlv, n + len); 142 skb_put(skb, n); 143 144 return n; 145} 146 147static struct sk_buff *tipc_tlv_alloc(int size) 148{ 149 int hdr_len; 150 struct sk_buff *buf; 151 152 size = TLV_SPACE(size); 153 hdr_len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN); 154 155 buf = alloc_skb(hdr_len + size, GFP_KERNEL); 156 if (!buf) 157 return NULL; 158 159 skb_reserve(buf, hdr_len); 160 161 return buf; 162} 163 164static struct sk_buff *tipc_get_err_tlv(char *str) 165{ 166 int str_len = strlen(str) + 1; 167 struct sk_buff *buf; 168 169 buf = tipc_tlv_alloc(TLV_SPACE(str_len)); 170 if (buf) 171 tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len); 172 173 return buf; 174} 175 176static inline bool string_is_valid(char *s, int len) 177{ 178 return memchr(s, '\0', len) ? true : false; 179} 180 181static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd, 182 struct tipc_nl_compat_msg *msg, 183 struct sk_buff *arg) 184{ 185 struct genl_dumpit_info info; 186 int len = 0; 187 int err; 188 struct sk_buff *buf; 189 struct nlmsghdr *nlmsg; 190 struct netlink_callback cb; 191 struct nlattr **attrbuf; 192 193 memset(&cb, 0, sizeof(cb)); 194 cb.nlh = (struct nlmsghdr *)arg->data; 195 cb.skb = arg; 196 cb.data = &info; 197 198 buf = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 199 if (!buf) 200 return -ENOMEM; 201 202 buf->sk = msg->dst_sk; 203 if (__tipc_dump_start(&cb, msg->net)) { 204 kfree_skb(buf); 205 return -ENOMEM; 206 } 207 208 attrbuf = kcalloc(tipc_genl_family.maxattr + 1, 209 sizeof(struct nlattr *), GFP_KERNEL); 210 if (!attrbuf) { 211 err = -ENOMEM; 212 goto err_out; 213 } 214 215 info.attrs = attrbuf; 216 err = nlmsg_parse_deprecated(cb.nlh, GENL_HDRLEN, attrbuf, 217 tipc_genl_family.maxattr, 218 tipc_genl_family.policy, NULL); 219 if (err) 220 goto err_out; 221 222 do { 223 int rem; 224 225 len = (*cmd->dumpit)(buf, &cb); 226 227 nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) { 228 err = nlmsg_parse_deprecated(nlmsg, GENL_HDRLEN, 229 attrbuf, 230 tipc_genl_family.maxattr, 231 tipc_genl_family.policy, 232 NULL); 233 if (err) 234 goto err_out; 235 236 err = (*cmd->format)(msg, attrbuf); 237 if (err) 238 goto err_out; 239 240 if (tipc_skb_tailroom(msg->rep) <= 1) { 241 err = -EMSGSIZE; 242 goto err_out; 243 } 244 } 245 246 skb_reset_tail_pointer(buf); 247 buf->len = 0; 248 249 } while (len); 250 251 err = 0; 252 253err_out: 254 kfree(attrbuf); 255 tipc_dump_done(&cb); 256 kfree_skb(buf); 257 258 if (err == -EMSGSIZE) { 259 /* The legacy API only considered messages filling 260 * "ULTRA_STRING_MAX_LEN" to be truncated. 261 */ 262 if ((TIPC_SKB_MAX - msg->rep->len) <= 1) { 263 char *tail = skb_tail_pointer(msg->rep); 264 265 if (*tail != '\0') 266 sprintf(tail - sizeof(REPLY_TRUNCATED) - 1, 267 REPLY_TRUNCATED); 268 } 269 270 return 0; 271 } 272 273 return err; 274} 275 276static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd, 277 struct tipc_nl_compat_msg *msg) 278{ 279 struct nlmsghdr *nlh; 280 struct sk_buff *arg; 281 int err; 282 283 if (msg->req_type && (!msg->req_size || 284 !TLV_CHECK_TYPE(msg->req, msg->req_type))) 285 return -EINVAL; 286 287 msg->rep = tipc_tlv_alloc(msg->rep_size); 288 if (!msg->rep) 289 return -ENOMEM; 290 291 if (msg->rep_type) 292 tipc_tlv_init(msg->rep, msg->rep_type); 293 294 if (cmd->header) { 295 err = (*cmd->header)(msg); 296 if (err) { 297 kfree_skb(msg->rep); 298 msg->rep = NULL; 299 return err; 300 } 301 } 302 303 arg = nlmsg_new(0, GFP_KERNEL); 304 if (!arg) { 305 kfree_skb(msg->rep); 306 msg->rep = NULL; 307 return -ENOMEM; 308 } 309 310 nlh = nlmsg_put(arg, 0, 0, tipc_genl_family.id, 0, NLM_F_MULTI); 311 if (!nlh) { 312 kfree_skb(arg); 313 kfree_skb(msg->rep); 314 msg->rep = NULL; 315 return -EMSGSIZE; 316 } 317 nlmsg_end(arg, nlh); 318 319 err = __tipc_nl_compat_dumpit(cmd, msg, arg); 320 if (err) { 321 kfree_skb(msg->rep); 322 msg->rep = NULL; 323 } 324 kfree_skb(arg); 325 326 return err; 327} 328 329static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd, 330 struct tipc_nl_compat_msg *msg) 331{ 332 int err; 333 struct sk_buff *doit_buf; 334 struct sk_buff *trans_buf; 335 struct nlattr **attrbuf; 336 struct genl_info info; 337 338 trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL); 339 if (!trans_buf) 340 return -ENOMEM; 341 342 attrbuf = kmalloc_array(tipc_genl_family.maxattr + 1, 343 sizeof(struct nlattr *), 344 GFP_KERNEL); 345 if (!attrbuf) { 346 err = -ENOMEM; 347 goto trans_out; 348 } 349 350 doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL); 351 if (!doit_buf) { 352 err = -ENOMEM; 353 goto attrbuf_out; 354 } 355 356 memset(&info, 0, sizeof(info)); 357 info.attrs = attrbuf; 358 359 rtnl_lock(); 360 err = (*cmd->transcode)(cmd, trans_buf, msg); 361 if (err) 362 goto doit_out; 363 364 err = nla_parse_deprecated(attrbuf, tipc_genl_family.maxattr, 365 (const struct nlattr *)trans_buf->data, 366 trans_buf->len, NULL, NULL); 367 if (err) 368 goto doit_out; 369 370 doit_buf->sk = msg->dst_sk; 371 372 err = (*cmd->doit)(doit_buf, &info); 373doit_out: 374 rtnl_unlock(); 375 376 kfree_skb(doit_buf); 377attrbuf_out: 378 kfree(attrbuf); 379trans_out: 380 kfree_skb(trans_buf); 381 382 return err; 383} 384 385static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd, 386 struct tipc_nl_compat_msg *msg) 387{ 388 int err; 389 390 if (msg->req_type && (!msg->req_size || 391 !TLV_CHECK_TYPE(msg->req, msg->req_type))) 392 return -EINVAL; 393 394 err = __tipc_nl_compat_doit(cmd, msg); 395 if (err) 396 return err; 397 398 /* The legacy API considered an empty message a success message */ 399 msg->rep = tipc_tlv_alloc(0); 400 if (!msg->rep) 401 return -ENOMEM; 402 403 return 0; 404} 405 406static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg, 407 struct nlattr **attrs) 408{ 409 struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1]; 410 int err; 411 412 if (!attrs[TIPC_NLA_BEARER]) 413 return -EINVAL; 414 415 err = nla_parse_nested_deprecated(bearer, TIPC_NLA_BEARER_MAX, 416 attrs[TIPC_NLA_BEARER], NULL, NULL); 417 if (err) 418 return err; 419 420 return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME, 421 nla_data(bearer[TIPC_NLA_BEARER_NAME]), 422 nla_len(bearer[TIPC_NLA_BEARER_NAME])); 423} 424 425static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd, 426 struct sk_buff *skb, 427 struct tipc_nl_compat_msg *msg) 428{ 429 struct nlattr *prop; 430 struct nlattr *bearer; 431 struct tipc_bearer_config *b; 432 int len; 433 434 b = (struct tipc_bearer_config *)TLV_DATA(msg->req); 435 436 bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER); 437 if (!bearer) 438 return -EMSGSIZE; 439 440 len = TLV_GET_DATA_LEN(msg->req); 441 len -= offsetof(struct tipc_bearer_config, name); 442 if (len <= 0) 443 return -EINVAL; 444 445 len = min_t(int, len, TIPC_MAX_BEARER_NAME); 446 if (!string_is_valid(b->name, len)) 447 return -EINVAL; 448 449 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name)) 450 return -EMSGSIZE; 451 452 if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain))) 453 return -EMSGSIZE; 454 455 if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) { 456 prop = nla_nest_start_noflag(skb, TIPC_NLA_BEARER_PROP); 457 if (!prop) 458 return -EMSGSIZE; 459 if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority))) 460 return -EMSGSIZE; 461 nla_nest_end(skb, prop); 462 } 463 nla_nest_end(skb, bearer); 464 465 return 0; 466} 467 468static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd, 469 struct sk_buff *skb, 470 struct tipc_nl_compat_msg *msg) 471{ 472 char *name; 473 struct nlattr *bearer; 474 int len; 475 476 name = (char *)TLV_DATA(msg->req); 477 478 bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER); 479 if (!bearer) 480 return -EMSGSIZE; 481 482 len = TLV_GET_DATA_LEN(msg->req); 483 if (len <= 0) 484 return -EINVAL; 485 486 len = min_t(int, len, TIPC_MAX_BEARER_NAME); 487 if (!string_is_valid(name, len)) 488 return -EINVAL; 489 490 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name)) 491 return -EMSGSIZE; 492 493 nla_nest_end(skb, bearer); 494 495 return 0; 496} 497 498static inline u32 perc(u32 count, u32 total) 499{ 500 return (count * 100 + (total / 2)) / total; 501} 502 503static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg, 504 struct nlattr *prop[], struct nlattr *stats[]) 505{ 506 tipc_tlv_sprintf(msg->rep, " Window:%u packets\n", 507 nla_get_u32(prop[TIPC_NLA_PROP_WIN])); 508 509 tipc_tlv_sprintf(msg->rep, 510 " RX packets:%u fragments:%u/%u bundles:%u/%u\n", 511 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), 512 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), 513 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), 514 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), 515 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); 516 517 tipc_tlv_sprintf(msg->rep, 518 " TX packets:%u fragments:%u/%u bundles:%u/%u\n", 519 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), 520 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), 521 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), 522 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), 523 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); 524 525 tipc_tlv_sprintf(msg->rep, " RX naks:%u defs:%u dups:%u\n", 526 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), 527 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), 528 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); 529 530 tipc_tlv_sprintf(msg->rep, " TX naks:%u acks:%u dups:%u\n", 531 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), 532 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), 533 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); 534 535 tipc_tlv_sprintf(msg->rep, 536 " Congestion link:%u Send queue max:%u avg:%u", 537 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), 538 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), 539 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); 540} 541 542static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg, 543 struct nlattr **attrs) 544{ 545 char *name; 546 struct nlattr *link[TIPC_NLA_LINK_MAX + 1]; 547 struct nlattr *prop[TIPC_NLA_PROP_MAX + 1]; 548 struct nlattr *stats[TIPC_NLA_STATS_MAX + 1]; 549 int err; 550 int len; 551 552 if (!attrs[TIPC_NLA_LINK]) 553 return -EINVAL; 554 555 err = nla_parse_nested_deprecated(link, TIPC_NLA_LINK_MAX, 556 attrs[TIPC_NLA_LINK], NULL, NULL); 557 if (err) 558 return err; 559 560 if (!link[TIPC_NLA_LINK_PROP]) 561 return -EINVAL; 562 563 err = nla_parse_nested_deprecated(prop, TIPC_NLA_PROP_MAX, 564 link[TIPC_NLA_LINK_PROP], NULL, 565 NULL); 566 if (err) 567 return err; 568 569 if (!link[TIPC_NLA_LINK_STATS]) 570 return -EINVAL; 571 572 err = nla_parse_nested_deprecated(stats, TIPC_NLA_STATS_MAX, 573 link[TIPC_NLA_LINK_STATS], NULL, 574 NULL); 575 if (err) 576 return err; 577 578 name = (char *)TLV_DATA(msg->req); 579 580 len = TLV_GET_DATA_LEN(msg->req); 581 if (len <= 0) 582 return -EINVAL; 583 584 len = min_t(int, len, TIPC_MAX_LINK_NAME); 585 if (!string_is_valid(name, len)) 586 return -EINVAL; 587 588 if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0) 589 return 0; 590 591 tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n", 592 nla_data(link[TIPC_NLA_LINK_NAME])); 593 594 if (link[TIPC_NLA_LINK_BROADCAST]) { 595 __fill_bc_link_stat(msg, prop, stats); 596 return 0; 597 } 598 599 if (link[TIPC_NLA_LINK_ACTIVE]) 600 tipc_tlv_sprintf(msg->rep, " ACTIVE"); 601 else if (link[TIPC_NLA_LINK_UP]) 602 tipc_tlv_sprintf(msg->rep, " STANDBY"); 603 else 604 tipc_tlv_sprintf(msg->rep, " DEFUNCT"); 605 606 tipc_tlv_sprintf(msg->rep, " MTU:%u Priority:%u", 607 nla_get_u32(link[TIPC_NLA_LINK_MTU]), 608 nla_get_u32(prop[TIPC_NLA_PROP_PRIO])); 609 610 tipc_tlv_sprintf(msg->rep, " Tolerance:%u ms Window:%u packets\n", 611 nla_get_u32(prop[TIPC_NLA_PROP_TOL]), 612 nla_get_u32(prop[TIPC_NLA_PROP_WIN])); 613 614 tipc_tlv_sprintf(msg->rep, 615 " RX packets:%u fragments:%u/%u bundles:%u/%u\n", 616 nla_get_u32(link[TIPC_NLA_LINK_RX]) - 617 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), 618 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), 619 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), 620 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), 621 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); 622 623 tipc_tlv_sprintf(msg->rep, 624 " TX packets:%u fragments:%u/%u bundles:%u/%u\n", 625 nla_get_u32(link[TIPC_NLA_LINK_TX]) - 626 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), 627 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), 628 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), 629 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), 630 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); 631 632 tipc_tlv_sprintf(msg->rep, 633 " TX profile sample:%u packets average:%u octets\n", 634 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]), 635 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) / 636 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])); 637 638 tipc_tlv_sprintf(msg->rep, 639 " 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ", 640 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]), 641 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), 642 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]), 643 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), 644 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]), 645 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), 646 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]), 647 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]))); 648 649 tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n", 650 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]), 651 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), 652 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]), 653 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), 654 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]), 655 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]))); 656 657 tipc_tlv_sprintf(msg->rep, 658 " RX states:%u probes:%u naks:%u defs:%u dups:%u\n", 659 nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]), 660 nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]), 661 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), 662 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), 663 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); 664 665 tipc_tlv_sprintf(msg->rep, 666 " TX states:%u probes:%u naks:%u acks:%u dups:%u\n", 667 nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]), 668 nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]), 669 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), 670 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), 671 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); 672 673 tipc_tlv_sprintf(msg->rep, 674 " Congestion link:%u Send queue max:%u avg:%u", 675 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), 676 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), 677 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); 678 679 return 0; 680} 681 682static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg, 683 struct nlattr **attrs) 684{ 685 struct nlattr *link[TIPC_NLA_LINK_MAX + 1]; 686 struct tipc_link_info link_info; 687 int err; 688 689 if (!attrs[TIPC_NLA_LINK]) 690 return -EINVAL; 691 692 err = nla_parse_nested_deprecated(link, TIPC_NLA_LINK_MAX, 693 attrs[TIPC_NLA_LINK], NULL, NULL); 694 if (err) 695 return err; 696 697 link_info.dest = htonl(nla_get_flag(link[TIPC_NLA_LINK_DEST])); 698 link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP])); 699 nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME], 700 TIPC_MAX_LINK_NAME); 701 702 return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO, 703 &link_info, sizeof(link_info)); 704} 705 706static int __tipc_add_link_prop(struct sk_buff *skb, 707 struct tipc_nl_compat_msg *msg, 708 struct tipc_link_config *lc) 709{ 710 switch (msg->cmd) { 711 case TIPC_CMD_SET_LINK_PRI: 712 return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value)); 713 case TIPC_CMD_SET_LINK_TOL: 714 return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value)); 715 case TIPC_CMD_SET_LINK_WINDOW: 716 return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value)); 717 } 718 719 return -EINVAL; 720} 721 722static int tipc_nl_compat_media_set(struct sk_buff *skb, 723 struct tipc_nl_compat_msg *msg) 724{ 725 struct nlattr *prop; 726 struct nlattr *media; 727 struct tipc_link_config *lc; 728 729 lc = (struct tipc_link_config *)TLV_DATA(msg->req); 730 731 media = nla_nest_start_noflag(skb, TIPC_NLA_MEDIA); 732 if (!media) 733 return -EMSGSIZE; 734 735 if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name)) 736 return -EMSGSIZE; 737 738 prop = nla_nest_start_noflag(skb, TIPC_NLA_MEDIA_PROP); 739 if (!prop) 740 return -EMSGSIZE; 741 742 __tipc_add_link_prop(skb, msg, lc); 743 nla_nest_end(skb, prop); 744 nla_nest_end(skb, media); 745 746 return 0; 747} 748 749static int tipc_nl_compat_bearer_set(struct sk_buff *skb, 750 struct tipc_nl_compat_msg *msg) 751{ 752 struct nlattr *prop; 753 struct nlattr *bearer; 754 struct tipc_link_config *lc; 755 756 lc = (struct tipc_link_config *)TLV_DATA(msg->req); 757 758 bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER); 759 if (!bearer) 760 return -EMSGSIZE; 761 762 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name)) 763 return -EMSGSIZE; 764 765 prop = nla_nest_start_noflag(skb, TIPC_NLA_BEARER_PROP); 766 if (!prop) 767 return -EMSGSIZE; 768 769 __tipc_add_link_prop(skb, msg, lc); 770 nla_nest_end(skb, prop); 771 nla_nest_end(skb, bearer); 772 773 return 0; 774} 775 776static int __tipc_nl_compat_link_set(struct sk_buff *skb, 777 struct tipc_nl_compat_msg *msg) 778{ 779 struct nlattr *prop; 780 struct nlattr *link; 781 struct tipc_link_config *lc; 782 783 lc = (struct tipc_link_config *)TLV_DATA(msg->req); 784 785 link = nla_nest_start_noflag(skb, TIPC_NLA_LINK); 786 if (!link) 787 return -EMSGSIZE; 788 789 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name)) 790 return -EMSGSIZE; 791 792 prop = nla_nest_start_noflag(skb, TIPC_NLA_LINK_PROP); 793 if (!prop) 794 return -EMSGSIZE; 795 796 __tipc_add_link_prop(skb, msg, lc); 797 nla_nest_end(skb, prop); 798 nla_nest_end(skb, link); 799 800 return 0; 801} 802 803static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd, 804 struct sk_buff *skb, 805 struct tipc_nl_compat_msg *msg) 806{ 807 struct tipc_link_config *lc; 808 struct tipc_bearer *bearer; 809 struct tipc_media *media; 810 int len; 811 812 lc = (struct tipc_link_config *)TLV_DATA(msg->req); 813 814 len = TLV_GET_DATA_LEN(msg->req); 815 len -= offsetof(struct tipc_link_config, name); 816 if (len <= 0) 817 return -EINVAL; 818 819 len = min_t(int, len, TIPC_MAX_LINK_NAME); 820 if (!string_is_valid(lc->name, len)) 821 return -EINVAL; 822 823 media = tipc_media_find(lc->name); 824 if (media) { 825 cmd->doit = &__tipc_nl_media_set; 826 return tipc_nl_compat_media_set(skb, msg); 827 } 828 829 bearer = tipc_bearer_find(msg->net, lc->name); 830 if (bearer) { 831 cmd->doit = &__tipc_nl_bearer_set; 832 return tipc_nl_compat_bearer_set(skb, msg); 833 } 834 835 return __tipc_nl_compat_link_set(skb, msg); 836} 837 838static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd, 839 struct sk_buff *skb, 840 struct tipc_nl_compat_msg *msg) 841{ 842 char *name; 843 struct nlattr *link; 844 int len; 845 846 name = (char *)TLV_DATA(msg->req); 847 848 link = nla_nest_start_noflag(skb, TIPC_NLA_LINK); 849 if (!link) 850 return -EMSGSIZE; 851 852 len = TLV_GET_DATA_LEN(msg->req); 853 if (len <= 0) 854 return -EINVAL; 855 856 len = min_t(int, len, TIPC_MAX_LINK_NAME); 857 if (!string_is_valid(name, len)) 858 return -EINVAL; 859 860 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name)) 861 return -EMSGSIZE; 862 863 nla_nest_end(skb, link); 864 865 return 0; 866} 867 868static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg) 869{ 870 int i; 871 u32 depth; 872 struct tipc_name_table_query *ntq; 873 static const char * const header[] = { 874 "Type ", 875 "Lower Upper ", 876 "Port Identity ", 877 "Publication Scope" 878 }; 879 880 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req); 881 if (TLV_GET_DATA_LEN(msg->req) < (int)sizeof(struct tipc_name_table_query)) 882 return -EINVAL; 883 884 depth = ntohl(ntq->depth); 885 886 if (depth > 4) 887 depth = 4; 888 for (i = 0; i < depth; i++) 889 tipc_tlv_sprintf(msg->rep, header[i]); 890 tipc_tlv_sprintf(msg->rep, "\n"); 891 892 return 0; 893} 894 895static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg, 896 struct nlattr **attrs) 897{ 898 char port_str[27]; 899 struct tipc_name_table_query *ntq; 900 struct nlattr *nt[TIPC_NLA_NAME_TABLE_MAX + 1]; 901 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1]; 902 u32 node, depth, type, lowbound, upbound; 903 static const char * const scope_str[] = {"", " zone", " cluster", 904 " node"}; 905 int err; 906 907 if (!attrs[TIPC_NLA_NAME_TABLE]) 908 return -EINVAL; 909 910 err = nla_parse_nested_deprecated(nt, TIPC_NLA_NAME_TABLE_MAX, 911 attrs[TIPC_NLA_NAME_TABLE], NULL, 912 NULL); 913 if (err) 914 return err; 915 916 if (!nt[TIPC_NLA_NAME_TABLE_PUBL]) 917 return -EINVAL; 918 919 err = nla_parse_nested_deprecated(publ, TIPC_NLA_PUBL_MAX, 920 nt[TIPC_NLA_NAME_TABLE_PUBL], NULL, 921 NULL); 922 if (err) 923 return err; 924 925 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req); 926 927 depth = ntohl(ntq->depth); 928 type = ntohl(ntq->type); 929 lowbound = ntohl(ntq->lowbound); 930 upbound = ntohl(ntq->upbound); 931 932 if (!(depth & TIPC_NTQ_ALLTYPES) && 933 (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]))) 934 return 0; 935 if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]))) 936 return 0; 937 if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]))) 938 return 0; 939 940 tipc_tlv_sprintf(msg->rep, "%-10u ", 941 nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])); 942 943 if (depth == 1) 944 goto out; 945 946 tipc_tlv_sprintf(msg->rep, "%-10u %-10u ", 947 nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]), 948 nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])); 949 950 if (depth == 2) 951 goto out; 952 953 node = nla_get_u32(publ[TIPC_NLA_PUBL_NODE]); 954 sprintf(port_str, "<%u.%u.%u:%u>", tipc_zone(node), tipc_cluster(node), 955 tipc_node(node), nla_get_u32(publ[TIPC_NLA_PUBL_REF])); 956 tipc_tlv_sprintf(msg->rep, "%-26s ", port_str); 957 958 if (depth == 3) 959 goto out; 960 961 tipc_tlv_sprintf(msg->rep, "%-10u %s", 962 nla_get_u32(publ[TIPC_NLA_PUBL_KEY]), 963 scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]); 964out: 965 tipc_tlv_sprintf(msg->rep, "\n"); 966 967 return 0; 968} 969 970static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, 971 struct nlattr **attrs) 972{ 973 u32 type, lower, upper; 974 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1]; 975 int err; 976 977 if (!attrs[TIPC_NLA_PUBL]) 978 return -EINVAL; 979 980 err = nla_parse_nested_deprecated(publ, TIPC_NLA_PUBL_MAX, 981 attrs[TIPC_NLA_PUBL], NULL, NULL); 982 if (err) 983 return err; 984 985 type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]); 986 lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]); 987 upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]); 988 989 if (lower == upper) 990 tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower); 991 else 992 tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper); 993 994 return 0; 995} 996 997static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock) 998{ 999 int err; 1000 void *hdr; 1001 struct nlattr *nest; 1002 struct sk_buff *args; 1003 struct tipc_nl_compat_cmd_dump dump; 1004 1005 args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 1006 if (!args) 1007 return -ENOMEM; 1008 1009 hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI, 1010 TIPC_NL_PUBL_GET); 1011 if (!hdr) { 1012 kfree_skb(args); 1013 return -EMSGSIZE; 1014 } 1015 1016 nest = nla_nest_start_noflag(args, TIPC_NLA_SOCK); 1017 if (!nest) { 1018 kfree_skb(args); 1019 return -EMSGSIZE; 1020 } 1021 1022 if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) { 1023 kfree_skb(args); 1024 return -EMSGSIZE; 1025 } 1026 1027 nla_nest_end(args, nest); 1028 genlmsg_end(args, hdr); 1029 1030 dump.dumpit = tipc_nl_publ_dump; 1031 dump.format = __tipc_nl_compat_publ_dump; 1032 1033 err = __tipc_nl_compat_dumpit(&dump, msg, args); 1034 1035 kfree_skb(args); 1036 1037 return err; 1038} 1039 1040static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg, 1041 struct nlattr **attrs) 1042{ 1043 int err; 1044 u32 sock_ref; 1045 struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1]; 1046 1047 if (!attrs[TIPC_NLA_SOCK]) 1048 return -EINVAL; 1049 1050 err = nla_parse_nested_deprecated(sock, TIPC_NLA_SOCK_MAX, 1051 attrs[TIPC_NLA_SOCK], NULL, NULL); 1052 if (err) 1053 return err; 1054 1055 sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]); 1056 tipc_tlv_sprintf(msg->rep, "%u:", sock_ref); 1057 1058 if (sock[TIPC_NLA_SOCK_CON]) { 1059 u32 node; 1060 struct nlattr *con[TIPC_NLA_CON_MAX + 1]; 1061 1062 err = nla_parse_nested_deprecated(con, TIPC_NLA_CON_MAX, 1063 sock[TIPC_NLA_SOCK_CON], 1064 NULL, NULL); 1065 1066 if (err) 1067 return err; 1068 1069 node = nla_get_u32(con[TIPC_NLA_CON_NODE]); 1070 tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>", 1071 tipc_zone(node), 1072 tipc_cluster(node), 1073 tipc_node(node), 1074 nla_get_u32(con[TIPC_NLA_CON_SOCK])); 1075 1076 if (con[TIPC_NLA_CON_FLAG]) 1077 tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n", 1078 nla_get_u32(con[TIPC_NLA_CON_TYPE]), 1079 nla_get_u32(con[TIPC_NLA_CON_INST])); 1080 else 1081 tipc_tlv_sprintf(msg->rep, "\n"); 1082 } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) { 1083 tipc_tlv_sprintf(msg->rep, " bound to"); 1084 1085 err = tipc_nl_compat_publ_dump(msg, sock_ref); 1086 if (err) 1087 return err; 1088 } 1089 tipc_tlv_sprintf(msg->rep, "\n"); 1090 1091 return 0; 1092} 1093 1094static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg, 1095 struct nlattr **attrs) 1096{ 1097 struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1]; 1098 int err; 1099 1100 if (!attrs[TIPC_NLA_MEDIA]) 1101 return -EINVAL; 1102 1103 err = nla_parse_nested_deprecated(media, TIPC_NLA_MEDIA_MAX, 1104 attrs[TIPC_NLA_MEDIA], NULL, NULL); 1105 if (err) 1106 return err; 1107 1108 return tipc_add_tlv(msg->rep, TIPC_TLV_MEDIA_NAME, 1109 nla_data(media[TIPC_NLA_MEDIA_NAME]), 1110 nla_len(media[TIPC_NLA_MEDIA_NAME])); 1111} 1112 1113static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg, 1114 struct nlattr **attrs) 1115{ 1116 struct tipc_node_info node_info; 1117 struct nlattr *node[TIPC_NLA_NODE_MAX + 1]; 1118 int err; 1119 1120 if (!attrs[TIPC_NLA_NODE]) 1121 return -EINVAL; 1122 1123 err = nla_parse_nested_deprecated(node, TIPC_NLA_NODE_MAX, 1124 attrs[TIPC_NLA_NODE], NULL, NULL); 1125 if (err) 1126 return err; 1127 1128 node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR])); 1129 node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP])); 1130 1131 return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info, 1132 sizeof(node_info)); 1133} 1134 1135static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd, 1136 struct sk_buff *skb, 1137 struct tipc_nl_compat_msg *msg) 1138{ 1139 u32 val; 1140 struct nlattr *net; 1141 1142 val = ntohl(*(__be32 *)TLV_DATA(msg->req)); 1143 1144 net = nla_nest_start_noflag(skb, TIPC_NLA_NET); 1145 if (!net) 1146 return -EMSGSIZE; 1147 1148 if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) { 1149 if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val)) 1150 return -EMSGSIZE; 1151 } else if (msg->cmd == TIPC_CMD_SET_NETID) { 1152 if (nla_put_u32(skb, TIPC_NLA_NET_ID, val)) 1153 return -EMSGSIZE; 1154 } 1155 nla_nest_end(skb, net); 1156 1157 return 0; 1158} 1159 1160static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg, 1161 struct nlattr **attrs) 1162{ 1163 __be32 id; 1164 struct nlattr *net[TIPC_NLA_NET_MAX + 1]; 1165 int err; 1166 1167 if (!attrs[TIPC_NLA_NET]) 1168 return -EINVAL; 1169 1170 err = nla_parse_nested_deprecated(net, TIPC_NLA_NET_MAX, 1171 attrs[TIPC_NLA_NET], NULL, NULL); 1172 if (err) 1173 return err; 1174 1175 id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID])); 1176 1177 return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id)); 1178} 1179 1180static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg) 1181{ 1182 msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN); 1183 if (!msg->rep) 1184 return -ENOMEM; 1185 1186 tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING); 1187 tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n"); 1188 1189 return 0; 1190} 1191 1192static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg) 1193{ 1194 struct tipc_nl_compat_cmd_dump dump; 1195 struct tipc_nl_compat_cmd_doit doit; 1196 1197 memset(&dump, 0, sizeof(dump)); 1198 memset(&doit, 0, sizeof(doit)); 1199 1200 switch (msg->cmd) { 1201 case TIPC_CMD_NOOP: 1202 msg->rep = tipc_tlv_alloc(0); 1203 if (!msg->rep) 1204 return -ENOMEM; 1205 return 0; 1206 case TIPC_CMD_GET_BEARER_NAMES: 1207 msg->rep_size = MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME); 1208 dump.dumpit = tipc_nl_bearer_dump; 1209 dump.format = tipc_nl_compat_bearer_dump; 1210 return tipc_nl_compat_dumpit(&dump, msg); 1211 case TIPC_CMD_ENABLE_BEARER: 1212 msg->req_type = TIPC_TLV_BEARER_CONFIG; 1213 doit.doit = __tipc_nl_bearer_enable; 1214 doit.transcode = tipc_nl_compat_bearer_enable; 1215 return tipc_nl_compat_doit(&doit, msg); 1216 case TIPC_CMD_DISABLE_BEARER: 1217 msg->req_type = TIPC_TLV_BEARER_NAME; 1218 doit.doit = __tipc_nl_bearer_disable; 1219 doit.transcode = tipc_nl_compat_bearer_disable; 1220 return tipc_nl_compat_doit(&doit, msg); 1221 case TIPC_CMD_SHOW_LINK_STATS: 1222 msg->req_type = TIPC_TLV_LINK_NAME; 1223 msg->rep_size = ULTRA_STRING_MAX_LEN; 1224 msg->rep_type = TIPC_TLV_ULTRA_STRING; 1225 dump.dumpit = tipc_nl_node_dump_link; 1226 dump.format = tipc_nl_compat_link_stat_dump; 1227 return tipc_nl_compat_dumpit(&dump, msg); 1228 case TIPC_CMD_GET_LINKS: 1229 msg->req_type = TIPC_TLV_NET_ADDR; 1230 msg->rep_size = ULTRA_STRING_MAX_LEN; 1231 dump.dumpit = tipc_nl_node_dump_link; 1232 dump.format = tipc_nl_compat_link_dump; 1233 return tipc_nl_compat_dumpit(&dump, msg); 1234 case TIPC_CMD_SET_LINK_TOL: 1235 case TIPC_CMD_SET_LINK_PRI: 1236 case TIPC_CMD_SET_LINK_WINDOW: 1237 msg->req_type = TIPC_TLV_LINK_CONFIG; 1238 doit.doit = tipc_nl_node_set_link; 1239 doit.transcode = tipc_nl_compat_link_set; 1240 return tipc_nl_compat_doit(&doit, msg); 1241 case TIPC_CMD_RESET_LINK_STATS: 1242 msg->req_type = TIPC_TLV_LINK_NAME; 1243 doit.doit = tipc_nl_node_reset_link_stats; 1244 doit.transcode = tipc_nl_compat_link_reset_stats; 1245 return tipc_nl_compat_doit(&doit, msg); 1246 case TIPC_CMD_SHOW_NAME_TABLE: 1247 msg->req_type = TIPC_TLV_NAME_TBL_QUERY; 1248 msg->rep_size = ULTRA_STRING_MAX_LEN; 1249 msg->rep_type = TIPC_TLV_ULTRA_STRING; 1250 dump.header = tipc_nl_compat_name_table_dump_header; 1251 dump.dumpit = tipc_nl_name_table_dump; 1252 dump.format = tipc_nl_compat_name_table_dump; 1253 return tipc_nl_compat_dumpit(&dump, msg); 1254 case TIPC_CMD_SHOW_PORTS: 1255 msg->rep_size = ULTRA_STRING_MAX_LEN; 1256 msg->rep_type = TIPC_TLV_ULTRA_STRING; 1257 dump.dumpit = tipc_nl_sk_dump; 1258 dump.format = tipc_nl_compat_sk_dump; 1259 return tipc_nl_compat_dumpit(&dump, msg); 1260 case TIPC_CMD_GET_MEDIA_NAMES: 1261 msg->rep_size = MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME); 1262 dump.dumpit = tipc_nl_media_dump; 1263 dump.format = tipc_nl_compat_media_dump; 1264 return tipc_nl_compat_dumpit(&dump, msg); 1265 case TIPC_CMD_GET_NODES: 1266 msg->rep_size = ULTRA_STRING_MAX_LEN; 1267 dump.dumpit = tipc_nl_node_dump; 1268 dump.format = tipc_nl_compat_node_dump; 1269 return tipc_nl_compat_dumpit(&dump, msg); 1270 case TIPC_CMD_SET_NODE_ADDR: 1271 msg->req_type = TIPC_TLV_NET_ADDR; 1272 doit.doit = __tipc_nl_net_set; 1273 doit.transcode = tipc_nl_compat_net_set; 1274 return tipc_nl_compat_doit(&doit, msg); 1275 case TIPC_CMD_SET_NETID: 1276 msg->req_type = TIPC_TLV_UNSIGNED; 1277 doit.doit = __tipc_nl_net_set; 1278 doit.transcode = tipc_nl_compat_net_set; 1279 return tipc_nl_compat_doit(&doit, msg); 1280 case TIPC_CMD_GET_NETID: 1281 msg->rep_size = sizeof(u32); 1282 dump.dumpit = tipc_nl_net_dump; 1283 dump.format = tipc_nl_compat_net_dump; 1284 return tipc_nl_compat_dumpit(&dump, msg); 1285 case TIPC_CMD_SHOW_STATS: 1286 return tipc_cmd_show_stats_compat(msg); 1287 } 1288 1289 return -EOPNOTSUPP; 1290} 1291 1292static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info) 1293{ 1294 int err; 1295 int len; 1296 struct tipc_nl_compat_msg msg; 1297 struct nlmsghdr *req_nlh; 1298 struct nlmsghdr *rep_nlh; 1299 struct tipc_genlmsghdr *req_userhdr = info->userhdr; 1300 1301 memset(&msg, 0, sizeof(msg)); 1302 1303 req_nlh = (struct nlmsghdr *)skb->data; 1304 msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN; 1305 msg.cmd = req_userhdr->cmd; 1306 msg.net = genl_info_net(info); 1307 msg.dst_sk = skb->sk; 1308 1309 if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) { 1310 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN); 1311 err = -EACCES; 1312 goto send; 1313 } 1314 1315 msg.req_size = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN); 1316 if (msg.req_size && !TLV_OK(msg.req, msg.req_size)) { 1317 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED); 1318 err = -EOPNOTSUPP; 1319 goto send; 1320 } 1321 1322 err = tipc_nl_compat_handle(&msg); 1323 if ((err == -EOPNOTSUPP) || (err == -EPERM)) 1324 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED); 1325 else if (err == -EINVAL) 1326 msg.rep = tipc_get_err_tlv(TIPC_CFG_TLV_ERROR); 1327send: 1328 if (!msg.rep) 1329 return err; 1330 1331 len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN); 1332 skb_push(msg.rep, len); 1333 rep_nlh = nlmsg_hdr(msg.rep); 1334 memcpy(rep_nlh, info->nlhdr, len); 1335 rep_nlh->nlmsg_len = msg.rep->len; 1336 genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid); 1337 1338 return err; 1339} 1340 1341static const struct genl_small_ops tipc_genl_compat_ops[] = { 1342 { 1343 .cmd = TIPC_GENL_CMD, 1344 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 1345 .doit = tipc_nl_compat_recv, 1346 }, 1347}; 1348 1349static struct genl_family tipc_genl_compat_family __ro_after_init = { 1350 .name = TIPC_GENL_NAME, 1351 .version = TIPC_GENL_VERSION, 1352 .hdrsize = TIPC_GENL_HDRLEN, 1353 .maxattr = 0, 1354 .netnsok = true, 1355 .module = THIS_MODULE, 1356 .small_ops = tipc_genl_compat_ops, 1357 .n_small_ops = ARRAY_SIZE(tipc_genl_compat_ops), 1358}; 1359 1360int __init tipc_netlink_compat_start(void) 1361{ 1362 int res; 1363 1364 res = genl_register_family(&tipc_genl_compat_family); 1365 if (res) { 1366 pr_err("Failed to register legacy compat interface\n"); 1367 return res; 1368 } 1369 1370 return 0; 1371} 1372 1373void tipc_netlink_compat_stop(void) 1374{ 1375 genl_unregister_family(&tipc_genl_compat_family); 1376} 1377