ip/xfrm_state.c

   1 /* $USAGI: $ */
   2
   3 /*
   4  * Copyright (C)2004 USAGI/WIDE Project
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 /*
  21  * based on iproute.c
  22  */
  23 /*
  24  * Authors:
  25  *      Masahide NAKAMURA @USAGI
  26  */
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <netdb.h>
  32 #include <linux/xfrm.h>
  33 #include "utils.h"
  34 #include "xfrm.h"
  35 #include "ip_common.h"
  36
  37 //#define NLMSG_FLUSH_BUF_SIZE (4096-512)
  38 #define NLMSG_FLUSH_BUF_SIZE 8192
  39
  40 /*
  41  * Receiving buffer defines:
  42  * nlmsg
  43  *   data = struct xfrm_usersa_info
  44  *   rtattr
  45  *   rtattr
  46  *   ... (max count of rtattr is XFRM_MAX_DEPTH)
  47  *
  48  *  each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t
  49  */
  50 #define NLMSG_BUF_SIZE 4096
  51 #define RTA_BUF_SIZE 2048
  52 #define XFRM_ALGO_KEY_BUF_SIZE 512
  53
  54 static void usage(void) __attribute__((noreturn));
  55
  56 static void usage(void)
  57 {
  58         fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n");
  59         fprintf(stderr, "        [ reqid REQID ] [ FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ]\n");
  60
  61         fprintf(stderr, "Usage: ip xfrm state { delete | get } ID\n");
  62         fprintf(stderr, "Usage: ip xfrm state { flush | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
  63         fprintf(stderr, "        [ FLAG_LIST ]\n");
  64
  65         fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ]\n");
  66         //fprintf(stderr, "XFRM_PROTO := [ esp | ah | ipcomp ]\n");
  67         fprintf(stderr, "XFRM_PROTO := [ ");
  68         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ESP));
  69         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_AH));
  70         fprintf(stderr, "%s", strxf_proto(IPPROTO_COMP));
  71         fprintf(stderr, " ]\n");
  72
  73         //fprintf(stderr, "SPI - security parameter index(default=0)\n");
  74
  75         fprintf(stderr, "MODE := [ transport | tunnel ](default=transport)\n");
  76         //fprintf(stderr, "REQID - number(default=0)\n");
  77
  78         fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] [ flag FLAG ]\n");
  79         fprintf(stderr, "FLAG := [ noecn ]\n");
  80
  81         fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] | [ algo ALGO ]\n");
  82         fprintf(stderr, "ALGO := ALGO_TYPE ALGO_NAME ALGO_KEY\n");
  83         fprintf(stderr, "ALGO_TYPE := [ E | A | C ]\n");
  84         //fprintf(stderr, "ALGO_NAME - algorithm name\n");
  85         //fprintf(stderr, "ALGO_KEY - algorithm key\n");
  86
  87         fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ upspec UPSPEC ] [ dev DEV ]\n");
  88
  89         fprintf(stderr, "UPSPEC := proto PROTO [ sport PORT ] [ dport PORT ]\n");
  90
  91         //fprintf(stderr, "DEV - device name(default=none)\n");
  92         fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
  93         fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
  94         fprintf(stderr, "         [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] COUNT ]\n");
  95         exit(-1);
  96 }
  97
  98 static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
  99                            char *name, char *key, int max)
 100 {
 101         int len;
 102
 103 #if 1
 104         /* XXX: verifying both name and key is required! */
 105         fprintf(stderr, "warning: ALGONAME/ALGOKEY will send to kernel promiscuously!(verifying them isn't implemented yet)\n");
 106 #endif
 107
 108         strncpy(alg->alg_name, name, sizeof(alg->alg_name));
 109
 110         if (strncmp(key, "0x", 2) == 0) {
 111                 /*
 112                  * XXX: fix me!!
 113                  */
 114                 __u64 val = 0;
 115                 char *p = (char *)&val;
 116
 117                 if (get_u64(&val, key, 16))
 118                         invarg("\"ALGOKEY\" is invalid", key);
 119
 120                 len = (strlen(key) - 2) / 2;
 121                 if (len > sizeof(val))
 122                         invarg("\"ALGOKEY\" is invalid: too large", key);
 123
 124                 if (len > 0) {
 125                         int index = sizeof(val) - len;
 126                         if (len > max)
 127                                 invarg("\"ALGOKEY\" makes buffer overflow\n", key);
 128
 129                         memcpy(alg->alg_key, &p[index], len);
 130                 }
 131
 132         } else {
 133                 len = strlen(key);
 134                 if (len > 0) {
 135                         if (len > max)
 136                                 invarg("\"ALGOKEY\" makes buffer overflow\n", key);
 137
 138                         strncpy(alg->alg_key, key, len);
 139                 }
 140         }
 141
 142         alg->alg_key_len = len * 8;
 143
 144         return 0;
 145 }
 146
 147 static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
 148 {
 149         int argc = *argcp;
 150         char **argv = *argvp;
 151         int len = strlen(*argv);
 152
 153         if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
 154                 __u8 val = 0;
 155
 156                 if (get_u8(&val, *argv, 16))
 157                         invarg("\"FLAG\" is invalid", *argv);
 158                 *flags = val;
 159         } else {
 160                 if (strcmp(*argv, "noecn") == 0)
 161                         *flags |= XFRM_STATE_NOECN;
 162                 else
 163                         invarg("\"FLAG\" is invalid", *argv);
 164         }
 165
 166         filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
 167
 168         *argcp = argc;
 169         *argvp = argv;
 170
 171         return 0;
 172 }
 173
 174 static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv)
 175 {
 176         struct rtnl_handle rth;
 177         struct {
 178                 struct nlmsghdr         n;
 179                 struct xfrm_usersa_info xsinfo;
 180                 char                    buf[RTA_BUF_SIZE];
 181         } req;
 182         char *idp = NULL;
 183         char *ealgop = NULL;
 184         char *aalgop = NULL;
 185         char *calgop = NULL;
 186
 187         memset(&req, 0, sizeof(req));
 188
 189         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo));
 190         req.n.nlmsg_flags = NLM_F_REQUEST|flags;
 191         req.n.nlmsg_type = cmd;
 192         req.xsinfo.family = preferred_family;
 193
 194         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 195         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 196         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 197         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 198
 199         while (argc > 0) {
 200                 if (strcmp(*argv, "algo") == 0) {
 201                         struct {
 202                                 struct xfrm_algo alg;
 203                                 char buf[XFRM_ALGO_KEY_BUF_SIZE];
 204                         } alg;
 205                         int len;
 206                         enum xfrm_attr_type_t type;
 207                         char *name;
 208                         char *key;
 209
 210                         NEXT_ARG();
 211
 212                         if (strcmp(*argv, "E") == 0) {
 213                                 if (ealgop)
 214                                         duparg("ALGOTYPE", *argv);
 215                                 ealgop = *argv;
 216                                 type = XFRMA_ALG_CRYPT;
 217                         } else if (strcmp(*argv, "A") == 0) {
 218                                 if (aalgop)
 219                                         duparg("ALGOTYPE", *argv);
 220                                 aalgop = *argv;
 221                                 type = XFRMA_ALG_AUTH;
 222
 223                         } else if (strcmp(*argv, "C") == 0) {
 224                                 if (calgop)
 225                                         duparg("ALGOTYPE", *argv);
 226                                 calgop = *argv;
 227                                 type = XFRMA_ALG_COMP;
 228                         } else
 229                                 invarg("\"ALGOTYPE\" is invalid\n", *argv);
 230
 231                         if (!NEXT_ARG_OK())
 232                                 missarg("ALGONAME");
 233                         NEXT_ARG();
 234                         name = *argv;
 235
 236                         if (!NEXT_ARG_OK())
 237                                 missarg("ALGOKEY");
 238                         NEXT_ARG();
 239                         key = *argv;
 240
 241                         memset(&alg, 0, sizeof(alg));
 242
 243                         xfrm_algo_parse((void *)&alg, type, name, key, sizeof(alg.buf));
 244                         len = sizeof(struct xfrm_algo) + alg.alg.alg_key_len;
 245
 246                         addattr_l(&req.n, sizeof(req.buf), type,
 247                                   (void *)&alg, len);
 248
 249                 } else if (strcmp(*argv, "mode") == 0) {
 250                         NEXT_ARG();
 251                         xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
 252                 } else if (strcmp(*argv, "reqid") == 0) {
 253                         NEXT_ARG();
 254                         xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
 255                 } else if (strcmp(*argv, "flag") == 0) {
 256                         NEXT_ARG();
 257                         xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
 258                 } else if (strcmp(*argv, "sel") == 0) {
 259                         NEXT_ARG();
 260                         xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
 261
 262                 } else if (strcmp(*argv, "limit") == 0) {
 263                         NEXT_ARG();
 264                         xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
 265                 } else {
 266                         if (idp)
 267                                 invarg("unknown", *argv);
 268                         idp = *argv;
 269
 270                         /* ID */
 271                         xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
 272                                       &req.xsinfo.family, &argc, &argv);
 273                         if (preferred_family == AF_UNSPEC)
 274                                 preferred_family = req.xsinfo.family;
 275                 }
 276                 argc--; argv++;
 277         }
 278
 279         if (!idp) {
 280                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 281                 exit(1);
 282         }
 283
 284         if (ealgop || aalgop || calgop) {
 285                 if (req.xsinfo.id.proto != IPPROTO_ESP &&
 286                     req.xsinfo.id.proto != IPPROTO_AH &&
 287                     req.xsinfo.id.proto != IPPROTO_COMP) {
 288                         fprintf(stderr, "\"ALGO\" is invalid with proto=%d\n", req.xsinfo.id.proto);
 289                         exit(1);
 290                 }
 291         } else {
 292                 if (req.xsinfo.id.proto == IPPROTO_ESP ||
 293                     req.xsinfo.id.proto == IPPROTO_AH ||
 294                     req.xsinfo.id.proto == IPPROTO_COMP) {
 295                         fprintf(stderr, "\"ALGO\" is required with proto=%d\n", req.xsinfo.id.proto);
 296                         exit (1);
 297                 }
 298         }
 299
 300         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 301                 exit(1);
 302
 303         if (req.xsinfo.family == AF_UNSPEC)
 304                 req.xsinfo.family = AF_INET;
 305
 306         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
 307                 exit(2);
 308
 309         rtnl_close(&rth);
 310
 311         return 0;
 312 }
 313
 314 static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
 315 {
 316         if (!filter.use)
 317                 return 1;
 318
 319         if (filter.id_src_mask)
 320                 if (memcmp(&xsinfo->saddr, &filter.xsinfo.saddr,
 321                            filter.id_src_mask) != 0)
 322                         return 0;
 323         if (filter.id_dst_mask)
 324                 if (memcmp(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
 325                            filter.id_dst_mask) != 0)
 326                         return 0;
 327         if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
 328                 return 0;
 329         if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
 330                 return 0;
 331         if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
 332                 return 0;
 333         if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
 334                 return 0;
 335         if (filter.state_flags_mask)
 336                 if ((xsinfo->flags & filter.xsinfo.flags) == 0)
 337                         return 0;
 338
 339         return 1;
 340 }
 341
 342 int xfrm_state_print(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 343 {
 344         FILE *fp = (FILE*)arg;
 345         struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
 346         int len = n->nlmsg_len;
 347         struct rtattr * tb[XFRMA_MAX+1];
 348         int ntb;
 349
 350         if (n->nlmsg_type != XFRM_MSG_NEWSA &&
 351             n->nlmsg_type != XFRM_MSG_DELSA) {
 352                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 353                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 354                 return 0;
 355         }
 356
 357         len -= NLMSG_LENGTH(sizeof(*xsinfo));
 358         if (len < 0) {
 359                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 360                 return -1;
 361         }
 362
 363         if (!xfrm_state_filter_match(xsinfo))
 364                 return 0;
 365
 366         memset(tb, 0, sizeof(tb));
 367         ntb = parse_rtattr_byindex(tb, XFRM_MAX_DEPTH, XFRMS_RTA(xsinfo), len);
 368
 369         if (n->nlmsg_type == XFRM_MSG_DELSA)
 370                 fprintf(fp, "Deleted ");
 371
 372         xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
 373                            xsinfo->reqid, xsinfo->family, fp, NULL);
 374
 375         fprintf(fp, "\t");
 376         if (show_stats > 0) {
 377                 fprintf(fp, "seq 0x%08u ", xsinfo->seq);
 378                 fprintf(fp, "replay-window %d ", xsinfo->replay_window);
 379         }
 380         fprintf(fp, "flag 0x%s", strxf_flags(xsinfo->flags));
 381         if (show_stats > 0) {
 382                 if (xsinfo->flags) {
 383                         fprintf(fp, "(");
 384                         if (xsinfo->flags & XFRM_STATE_NOECN)
 385                                 fprintf(fp, "noecn");
 386                         fprintf(fp, ")");
 387                 }
 388         }
 389         fprintf(fp, "\n");
 390
 391         xfrm_xfrma_print(tb, ntb, xsinfo->family, fp, "\t");
 392
 393         if (show_stats > 0) {
 394                 fprintf(fp, "\tsel\n");
 395                 xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, "\t  ");
 396         }
 397
 398         if (show_stats > 0) {
 399                 xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, "\t");
 400                 xfrm_stats_print(&xsinfo->stats, fp, "\t");
 401         }
 402
 403         return 0;
 404 }
 405
 406 static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
 407 {
 408         struct rtnl_handle rth;
 409         struct {
 410                 struct nlmsghdr         n;
 411                 struct xfrm_usersa_id   xsid;
 412         } req;
 413         struct xfrm_id id;
 414         char *idp = NULL;
 415
 416         memset(&req, 0, sizeof(req));
 417
 418         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid));
 419         req.n.nlmsg_flags = NLM_F_REQUEST;
 420         req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA;
 421         req.xsid.family = preferred_family;
 422
 423         while (argc > 0) {
 424                 /*
 425                  * XXX: Source address is not used and ignore it to follow
 426                  * XXX: a manner of setkey e.g. in the case of deleting/getting
 427                  * XXX: message of IPsec SA.
 428                  */
 429                 xfrm_address_t ignore_saddr;
 430
 431                 if (idp)
 432                         invarg("unknown", *argv);
 433                 idp = *argv;
 434
 435                 /* ID */
 436                 memset(&id, 0, sizeof(id));
 437                 xfrm_id_parse(&ignore_saddr, &id, &req.xsid.family,
 438                               &argc, &argv);
 439
 440                 memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
 441                 req.xsid.spi = id.spi;
 442                 req.xsid.proto = id.proto;
 443
 444                 argc--; argv++;
 445         }
 446
 447         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 448                 exit(1);
 449
 450         if (req.xsid.family == AF_UNSPEC)
 451                 req.xsid.family = AF_INET;
 452
 453         if (delete) {
 454                 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
 455                         exit(2);
 456         } else {
 457                 char buf[NLMSG_BUF_SIZE];
 458                 struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
 459
 460                 memset(buf, 0, sizeof(buf));
 461
 462                 if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0)
 463                         exit(2);
 464
 465                 if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 466                         fprintf(stderr, "An error :-)\n");
 467                         exit(1);
 468                 }
 469         }
 470
 471         rtnl_close(&rth);
 472
 473         return 0;
 474 }
 475
 476 /*
 477  * With an existing state of nlmsg, make new nlmsg for deleting the state
 478  * and store it to buffer.
 479  */
 480 int xfrm_state_keep(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 481 {
 482         struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
 483         struct rtnl_handle *rth = xb->rth;
 484         struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
 485         int len = n->nlmsg_len;
 486         struct nlmsghdr *new_n;
 487         struct xfrm_usersa_id *xsid;
 488
 489         if (n->nlmsg_type != XFRM_MSG_NEWSA) {
 490                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 491                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 492                 return 0;
 493         }
 494
 495         len -= NLMSG_LENGTH(sizeof(*xsinfo));
 496         if (len < 0) {
 497                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 498                 return -1;
 499         }
 500
 501         if (!xfrm_state_filter_match(xsinfo))
 502                 return 0;
 503
 504         if (xb->offset > xb->size) {
 505                 fprintf(stderr, "Flush buffer overflow\n");
 506                 return -1;
 507         }
 508
 509         new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
 510         new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
 511         new_n->nlmsg_flags = NLM_F_REQUEST;
 512         new_n->nlmsg_type = XFRM_MSG_DELSA;
 513         new_n->nlmsg_seq = ++rth->seq;
 514
 515         xsid = NLMSG_DATA(new_n);
 516         xsid->family = xsinfo->family;
 517         memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
 518         xsid->spi = xsinfo->id.spi;
 519         xsid->proto = xsinfo->id.proto;
 520
 521         xb->offset += new_n->nlmsg_len;
 522         xb->nlmsg_count ++;
 523
 524         return 0;
 525 }
 526
 527 static int xfrm_state_list_or_flush(int argc, char **argv, int flush)
 528 {
 529         char *idp = NULL;
 530         struct rtnl_handle rth;
 531
 532         filter.use = 1;
 533         filter.xsinfo.family = preferred_family;
 534
 535         while (argc > 0) {
 536                 if (strcmp(*argv, "mode") == 0) {
 537                         NEXT_ARG();
 538                         xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
 539
 540                         filter.mode_mask = XFRM_FILTER_MASK_FULL;
 541
 542                 } else if (strcmp(*argv, "reqid") == 0) {
 543                         NEXT_ARG();
 544                         xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
 545
 546                         filter.reqid_mask = XFRM_FILTER_MASK_FULL;
 547
 548                 } else if (strcmp(*argv, "flag") == 0) {
 549                         NEXT_ARG();
 550                         xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
 551
 552                         filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
 553
 554                 } else {
 555                         if (idp)
 556                                 invarg("unknown", *argv);
 557                         idp = *argv;
 558
 559                         /* ID */
 560                         xfrm_id_parse(&filter.xsinfo.saddr,
 561                                       &filter.xsinfo.id,
 562                                         &filter.xsinfo.family, &argc, &argv);
 563                         if (preferred_family == AF_UNSPEC)
 564                                 preferred_family = filter.xsinfo.family;
 565                 }
 566                 argc--; argv++;
 567         }
 568
 569         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 570                 exit(1);
 571
 572         if (flush) {
 573                 struct xfrm_buffer xb;
 574                 char buf[NLMSG_FLUSH_BUF_SIZE];
 575                 int i;
 576
 577                 xb.buf = buf;
 578                 xb.size = sizeof(buf);
 579                 xb.rth = &rth;
 580
 581                 for (i = 0; ; i++) {
 582                         xb.offset = 0;
 583                         xb.nlmsg_count = 0;
 584
 585                         if (show_stats > 1)
 586                                 fprintf(stderr, "Flush round = %d\n", i);
 587
 588                         if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
 589                                 perror("Cannot send dump request");
 590                                 exit(1);
 591                         }
 592
 593                         if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb, NULL, NULL) < 0) {
 594                                 fprintf(stderr, "Flush terminated\n");
 595                                 exit(1);
 596                         }
 597                         if (xb.nlmsg_count == 0) {
 598                                 if (show_stats > 1)
 599                                         fprintf(stderr, "Flush completed\n");
 600                                 break;
 601                         }
 602
 603                         if (rtnl_send(&rth, xb.buf, xb.offset) < 0) {
 604                                 perror("Failed to send flush request\n");
 605                                 exit(1);
 606                         }
 607                         if (show_stats > 1)
 608                                 fprintf(stderr, "Flushed nlmsg count = %d\n", xb.nlmsg_count);
 609
 610                         xb.offset = 0;
 611                         xb.nlmsg_count = 0;
 612                 }
 613
 614         } else {
 615                 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
 616                         perror("Cannot send dump request");
 617                         exit(1);
 618                 }
 619
 620                 if (rtnl_dump_filter(&rth, xfrm_state_print, stdout, NULL, NULL) < 0) {
 621                         fprintf(stderr, "Dump terminated\n");
 622                         exit(1);
 623                 }
 624         }
 625
 626         rtnl_close(&rth);
 627
 628         exit(0);
 629 }
 630
 631 int do_xfrm_state(int argc, char **argv)
 632 {
 633         if (argc < 1)
 634                 return xfrm_state_list_or_flush(0, NULL, 0);
 635
 636         if (matches(*argv, "add") == 0)
 637                 return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
 638                                          argc-1, argv+1);
 639         if (matches(*argv, "update") == 0)
 640                 return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
 641                                          argc-1, argv+1);
 642         if (matches(*argv, "delete") == 0 || matches(*argv, "del") == 0)
 643                 return xfrm_state_get_or_delete(argc-1, argv+1, 1);
 644         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
 645             || matches(*argv, "lst") == 0)
 646                 return xfrm_state_list_or_flush(argc-1, argv+1, 0);
 647         if (matches(*argv, "get") == 0)
 648                 return xfrm_state_get_or_delete(argc-1, argv+1, 0);
 649         if (matches(*argv, "flush") == 0)
 650                 return xfrm_state_list_or_flush(argc-1, argv+1, 1);
 651         if (matches(*argv, "help") == 0)
 652                 usage();
 653         fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
 654         exit(-1);
 655 }