zebra/zebra_ptm.c

   1 /* Kernel routing table updates using netlink over GNU/Linux system.
   2  * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <zebra.h>
  22 #include <sys/un.h> /* for sockaddr_un */
  23 #include <net/if.h>
  24 #include "vty.h"
  25 #include "zebra/zserv.h"
  26 #include "zebra/interface.h"
  27 #include "zebra/debug.h"
  28 #include "zebra/zebra_ptm.h"
  29 #include "if.h"
  30 #include "command.h"
  31 #include "stream.h"
  32 #include "ptm_lib.h"
  33 #include "network.h"
  34 #include "buffer.h"
  35 #include "zebra/zebra_ptm_redistribute.h"
  36 #include "bfd.h"
  37 #include "vrf.h"
  38 #include "rib.h"
  39 #include "zebra_vrf.h"
  40 #include "version.h"
  41
  42 #define ZEBRA_PTM_RECONNECT_TIME_INITIAL 1 /* initial reconnect is 1s */
  43 #define ZEBRA_PTM_RECONNECT_TIME_MAX     300
  44
  45 #define PTM_MSG_LEN     4
  46 #define PTM_HEADER_LEN  37
  47
  48 const char ZEBRA_PTM_GET_STATUS_CMD[] = "get-status";
  49 const char ZEBRA_PTM_BFD_START_CMD[] = "start-bfd-sess";
  50 const char ZEBRA_PTM_BFD_STOP_CMD[] = "stop-bfd-sess";
  51 const char ZEBRA_PTM_BFD_CLIENT_REG_CMD[] = "reg-bfd-client";
  52 const char ZEBRA_PTM_BFD_CLIENT_DEREG_CMD[] = "dereg-bfd-client";
  53
  54 const char ZEBRA_PTM_CMD_STR[] = "cmd";
  55 const char ZEBRA_PTM_CMD_STATUS_STR[] = "cmd_status";
  56 const char ZEBRA_PTM_PORT_STR[] = "port";
  57 const char ZEBRA_PTM_CBL_STR[] = "cbl status";
  58 const char ZEBRA_PTM_PASS_STR[] = "pass";
  59 const char ZEBRA_PTM_FAIL_STR[] = "fail";
  60 const char ZEBRA_PTM_BFDSTATUS_STR[] = "state";
  61 const char ZEBRA_PTM_BFDSTATUS_UP_STR[] = "Up";
  62 const char ZEBRA_PTM_BFDSTATUS_DOWN_STR[] = "Down";
  63 const char ZEBRA_PTM_BFDDEST_STR[] = "peer";
  64 const char ZEBRA_PTM_BFDSRC_STR[] = "local";
  65 const char ZEBRA_PTM_BFDVRF_STR[] = "vrf";
  66 const char ZEBRA_PTM_INVALID_PORT_NAME[] = "N/A";
  67 const char ZEBRA_PTM_INVALID_SRC_IP[] = "N/A";
  68 const char ZEBRA_PTM_INVALID_VRF[] = "N/A";
  69
  70 const char ZEBRA_PTM_BFD_DST_IP_FIELD[] = "dstIPaddr";
  71 const char ZEBRA_PTM_BFD_SRC_IP_FIELD[] = "srcIPaddr";
  72 const char ZEBRA_PTM_BFD_MIN_RX_FIELD[] = "requiredMinRx";
  73 const char ZEBRA_PTM_BFD_MIN_TX_FIELD[] = "upMinTx";
  74 const char ZEBRA_PTM_BFD_DETECT_MULT_FIELD[] = "detectMult";
  75 const char ZEBRA_PTM_BFD_MULTI_HOP_FIELD[] = "multiHop";
  76 const char ZEBRA_PTM_BFD_CLIENT_FIELD[] = "client";
  77 const char ZEBRA_PTM_BFD_SEQID_FIELD[] = "seqid";
  78 const char ZEBRA_PTM_BFD_IFNAME_FIELD[] = "ifName";
  79 const char ZEBRA_PTM_BFD_MAX_HOP_CNT_FIELD[] = "maxHopCnt";
  80 const char ZEBRA_PTM_BFD_SEND_EVENT[] = "sendEvent";
  81 const char ZEBRA_PTM_BFD_VRF_NAME_FIELD[] = "vrfName";
  82
  83 static ptm_lib_handle_t *ptm_hdl;
  84
  85 struct zebra_ptm_cb ptm_cb;
  86
  87 static int zebra_ptm_socket_init(void);
  88 int zebra_ptm_sock_read(struct thread *);
  89 static void zebra_ptm_install_commands(void);
  90 static int zebra_ptm_handle_msg_cb(void *arg, void *in_ctxt);
  91 void zebra_bfd_peer_replay_req(void);
  92 void zebra_ptm_send_status_req(void);
  93 void zebra_ptm_reset_status(int ptm_disable);
  94
  95 const char ZEBRA_PTM_SOCK_NAME[] = "\0/var/run/ptmd.socket";
  96
  97 void zebra_ptm_init(void)
  98 {
  99         char buf[64];
 100
 101         memset(&ptm_cb, 0, sizeof(struct zebra_ptm_cb));
 102
 103         ptm_cb.out_data = calloc(1, ZEBRA_PTM_SEND_MAX_SOCKBUF);
 104         if (!ptm_cb.out_data) {
 105                 zlog_warn("%s: Allocation of send data failed", __func__);
 106                 return;
 107         }
 108
 109         ptm_cb.in_data = calloc(1, ZEBRA_PTM_MAX_SOCKBUF);
 110         if (!ptm_cb.in_data) {
 111                 zlog_warn("%s: Allocation of recv data failed", __func__);
 112                 free(ptm_cb.out_data);
 113                 return;
 114         }
 115
 116         ptm_cb.pid = getpid();
 117         zebra_ptm_install_commands();
 118
 119         sprintf(buf, "%s", FRR_PTM_NAME);
 120         ptm_hdl = ptm_lib_register(buf, NULL, zebra_ptm_handle_msg_cb,
 121                                    zebra_ptm_handle_msg_cb);
 122         ptm_cb.wb = buffer_new(0);
 123
 124         ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL;
 125
 126         ptm_cb.ptm_sock = -1;
 127 }
 128
 129 void zebra_ptm_finish(void)
 130 {
 131         int proto;
 132
 133         for (proto = 0; proto < ZEBRA_ROUTE_MAX; proto++)
 134                 if (CHECK_FLAG(ptm_cb.client_flags[proto],
 135                                ZEBRA_PTM_BFD_CLIENT_FLAG_REG))
 136                         zebra_ptm_bfd_client_deregister(proto);
 137
 138         buffer_flush_all(ptm_cb.wb, ptm_cb.ptm_sock);
 139
 140         free(ptm_hdl);
 141
 142         if (ptm_cb.out_data)
 143                 free(ptm_cb.out_data);
 144
 145         if (ptm_cb.in_data)
 146                 free(ptm_cb.in_data);
 147
 148         /* Release threads. */
 149         if (ptm_cb.t_read)
 150                 thread_cancel(ptm_cb.t_read);
 151         if (ptm_cb.t_write)
 152                 thread_cancel(ptm_cb.t_write);
 153         if (ptm_cb.t_timer)
 154                 thread_cancel(ptm_cb.t_timer);
 155
 156         if (ptm_cb.wb)
 157                 buffer_free(ptm_cb.wb);
 158
 159         if (ptm_cb.ptm_sock >= 0)
 160                 close(ptm_cb.ptm_sock);
 161 }
 162
 163 static int zebra_ptm_flush_messages(struct thread *thread)
 164 {
 165         ptm_cb.t_write = NULL;
 166
 167         if (ptm_cb.ptm_sock == -1)
 168                 return -1;
 169
 170         errno = 0;
 171
 172         switch (buffer_flush_available(ptm_cb.wb, ptm_cb.ptm_sock)) {
 173         case BUFFER_ERROR:
 174                 zlog_warn("%s ptm socket error: %s", __func__,
 175                           safe_strerror(errno));
 176                 close(ptm_cb.ptm_sock);
 177                 ptm_cb.ptm_sock = -1;
 178                 zebra_ptm_reset_status(0);
 179                 ptm_cb.t_timer = NULL;
 180                 thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
 181                                  ptm_cb.reconnect_time, &ptm_cb.t_timer);
 182                 return (-1);
 183         case BUFFER_PENDING:
 184                 ptm_cb.t_write = NULL;
 185                 thread_add_write(zebrad.master, zebra_ptm_flush_messages, NULL,
 186                                  ptm_cb.ptm_sock, &ptm_cb.t_write);
 187                 break;
 188         case BUFFER_EMPTY:
 189                 break;
 190         }
 191
 192         return (0);
 193 }
 194
 195 static int zebra_ptm_send_message(char *data, int size)
 196 {
 197         errno = 0;
 198         switch (buffer_write(ptm_cb.wb, ptm_cb.ptm_sock, data, size)) {
 199         case BUFFER_ERROR:
 200                 zlog_warn("%s ptm socket error: %s", __func__,
 201                           safe_strerror(errno));
 202                 close(ptm_cb.ptm_sock);
 203                 ptm_cb.ptm_sock = -1;
 204                 zebra_ptm_reset_status(0);
 205                 ptm_cb.t_timer = NULL;
 206                 thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
 207                                  ptm_cb.reconnect_time, &ptm_cb.t_timer);
 208                 return -1;
 209         case BUFFER_EMPTY:
 210                 THREAD_OFF(ptm_cb.t_write);
 211                 break;
 212         case BUFFER_PENDING:
 213                 thread_add_write(zebrad.master, zebra_ptm_flush_messages, NULL,
 214                                  ptm_cb.ptm_sock, &ptm_cb.t_write);
 215                 break;
 216         }
 217
 218         return 0;
 219 }
 220
 221 int zebra_ptm_connect(struct thread *t)
 222 {
 223         int init = 0;
 224
 225         if (ptm_cb.ptm_sock == -1) {
 226                 zebra_ptm_socket_init();
 227                 init = 1;
 228         }
 229
 230         if (ptm_cb.ptm_sock != -1) {
 231                 if (init) {
 232                         ptm_cb.t_read = NULL;
 233                         thread_add_read(zebrad.master, zebra_ptm_sock_read,
 234                                         NULL, ptm_cb.ptm_sock, &ptm_cb.t_read);
 235                         zebra_bfd_peer_replay_req();
 236                 }
 237                 zebra_ptm_send_status_req();
 238                 ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL;
 239         } else if (ptm_cb.reconnect_time < ZEBRA_PTM_RECONNECT_TIME_MAX) {
 240                 ptm_cb.reconnect_time *= 2;
 241                 if (ptm_cb.reconnect_time > ZEBRA_PTM_RECONNECT_TIME_MAX)
 242                         ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_MAX;
 243
 244                 ptm_cb.t_timer = NULL;
 245                 thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
 246                                  ptm_cb.reconnect_time, &ptm_cb.t_timer);
 247         } else if (ptm_cb.reconnect_time >= ZEBRA_PTM_RECONNECT_TIME_MAX) {
 248                 ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL;
 249         }
 250
 251         return (errno);
 252 }
 253
 254 DEFUN (zebra_ptm_enable,
 255        zebra_ptm_enable_cmd,
 256        "ptm-enable",
 257        "Enable neighbor check with specified topology\n")
 258 {
 259         struct vrf *vrf;
 260         struct listnode *i;
 261         struct interface *ifp;
 262         struct zebra_if *if_data;
 263
 264         ptm_cb.ptm_enable = ZEBRA_IF_PTM_ENABLE_ON;
 265
 266         RB_FOREACH(vrf, vrf_name_head, &vrfs_by_name)
 267         for (ALL_LIST_ELEMENTS_RO(vrf->iflist, i, ifp))
 268                 if (!ifp->ptm_enable) {
 269                         if_data = (struct zebra_if *)ifp->info;
 270                         if (if_data && (if_data->ptm_enable
 271                                         == ZEBRA_IF_PTM_ENABLE_UNSPEC)) {
 272                                 ifp->ptm_enable = ZEBRA_IF_PTM_ENABLE_ON;
 273                         }
 274                         /* Assign a default unknown status */
 275                         ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN;
 276                 }
 277
 278         zebra_ptm_connect(NULL);
 279
 280         return CMD_SUCCESS;
 281 }
 282
 283 DEFUN (no_zebra_ptm_enable,
 284        no_zebra_ptm_enable_cmd,
 285        "no ptm-enable",
 286        NO_STR
 287        "Enable neighbor check with specified topology\n")
 288 {
 289         ptm_cb.ptm_enable = ZEBRA_IF_PTM_ENABLE_OFF;
 290         zebra_ptm_reset_status(1);
 291         return CMD_SUCCESS;
 292 }
 293
 294 DEFUN (zebra_ptm_enable_if,
 295        zebra_ptm_enable_if_cmd,
 296        "ptm-enable",
 297        "Enable neighbor check with specified topology\n")
 298 {
 299         VTY_DECLVAR_CONTEXT(interface, ifp);
 300         struct zebra_if *if_data;
 301         int old_ptm_enable;
 302         int send_linkdown = 0;
 303
 304         if (ifp->ifindex == IFINDEX_INTERNAL) {
 305                 return CMD_SUCCESS;
 306         }
 307
 308         old_ptm_enable = ifp->ptm_enable;
 309         ifp->ptm_enable = ptm_cb.ptm_enable;
 310
 311         if (if_is_no_ptm_operative(ifp))
 312                 send_linkdown = 1;
 313
 314         if (!old_ptm_enable && ptm_cb.ptm_enable) {
 315                 if (!if_is_operative(ifp) && send_linkdown) {
 316                         if (IS_ZEBRA_DEBUG_EVENT)
 317                                 zlog_debug("%s: Bringing down interface %s\n",
 318                                            __func__, ifp->name);
 319                         if_down(ifp);
 320                 }
 321         }
 322
 323         if_data = ifp->info;
 324         if_data->ptm_enable = ZEBRA_IF_PTM_ENABLE_UNSPEC;
 325
 326         return CMD_SUCCESS;
 327 }
 328
 329 DEFUN (no_zebra_ptm_enable_if,
 330        no_zebra_ptm_enable_if_cmd,
 331        "no ptm-enable",
 332        NO_STR
 333        "Enable neighbor check with specified topology\n")
 334 {
 335         VTY_DECLVAR_CONTEXT(interface, ifp);
 336         int send_linkup = 0;
 337         struct zebra_if *if_data;
 338
 339         if ((ifp->ifindex != IFINDEX_INTERNAL) && (ifp->ptm_enable)) {
 340                 if (!if_is_operative(ifp))
 341                         send_linkup = 1;
 342
 343                 ifp->ptm_enable = ZEBRA_IF_PTM_ENABLE_OFF;
 344                 if (if_is_no_ptm_operative(ifp) && send_linkup) {
 345                         if (IS_ZEBRA_DEBUG_EVENT)
 346                                 zlog_debug("%s: Bringing up interface %s\n",
 347                                            __func__, ifp->name);
 348                         if_up(ifp);
 349                 }
 350         }
 351
 352         if_data = ifp->info;
 353         if_data->ptm_enable = ZEBRA_IF_PTM_ENABLE_OFF;
 354
 355         return CMD_SUCCESS;
 356 }
 357
 358
 359 void zebra_ptm_write(struct vty *vty)
 360 {
 361         if (ptm_cb.ptm_enable)
 362                 vty_out(vty, "ptm-enable\n");
 363
 364         return;
 365 }
 366
 367 static int zebra_ptm_socket_init(void)
 368 {
 369         int ret;
 370         int sock;
 371         struct sockaddr_un addr;
 372
 373         ptm_cb.ptm_sock = -1;
 374
 375         sock = socket(PF_UNIX, SOCK_STREAM, 0);
 376         if (sock < 0)
 377                 return -1;
 378         if (set_nonblocking(sock) < 0) {
 379                 if (IS_ZEBRA_DEBUG_EVENT)
 380                         zlog_debug("%s: Unable to set socket non blocking[%s]",
 381                                    __PRETTY_FUNCTION__, safe_strerror(errno));
 382                 close(sock);
 383                 return -1;
 384         }
 385
 386         /* Make server socket. */
 387         memset(&addr, 0, sizeof(struct sockaddr_un));
 388         addr.sun_family = AF_UNIX;
 389         memcpy(&addr.sun_path, ZEBRA_PTM_SOCK_NAME,
 390                sizeof(ZEBRA_PTM_SOCK_NAME));
 391
 392         ret = connect(sock, (struct sockaddr *)&addr,
 393                       sizeof(addr.sun_family) + sizeof(ZEBRA_PTM_SOCK_NAME)
 394                               - 1);
 395         if (ret < 0) {
 396                 if (IS_ZEBRA_DEBUG_EVENT)
 397                         zlog_debug("%s: Unable to connect to socket %s [%s]",
 398                                    __func__, ZEBRA_PTM_SOCK_NAME,
 399                                    safe_strerror(errno));
 400                 close(sock);
 401                 return -1;
 402         }
 403         ptm_cb.ptm_sock = sock;
 404         return sock;
 405 }
 406
 407 static void zebra_ptm_install_commands(void)
 408 {
 409         install_element(CONFIG_NODE, &zebra_ptm_enable_cmd);
 410         install_element(CONFIG_NODE, &no_zebra_ptm_enable_cmd);
 411         install_element(INTERFACE_NODE, &zebra_ptm_enable_if_cmd);
 412         install_element(INTERFACE_NODE, &no_zebra_ptm_enable_if_cmd);
 413 }
 414
 415 /* BFD session goes down, send message to the protocols. */
 416 static void if_bfd_session_update(struct interface *ifp, struct prefix *dp,
 417                                   struct prefix *sp, int status,
 418                                   vrf_id_t vrf_id)
 419 {
 420         if (IS_ZEBRA_DEBUG_EVENT) {
 421                 char buf[2][INET6_ADDRSTRLEN];
 422
 423                 if (ifp) {
 424                         zlog_debug(
 425                                 "MESSAGE: ZEBRA_INTERFACE_BFD_DEST_UPDATE %s/%d on %s"
 426                                 " %s event",
 427                                 inet_ntop(dp->family, &dp->u.prefix, buf[0],
 428                                           INET6_ADDRSTRLEN),
 429                                 dp->prefixlen, ifp->name,
 430                                 bfd_get_status_str(status));
 431                 } else {
 432                         zlog_debug(
 433                                 "MESSAGE: ZEBRA_INTERFACE_BFD_DEST_UPDATE %s/%d "
 434                                 "with src %s/%d and vrf %d %s event",
 435                                 inet_ntop(dp->family, &dp->u.prefix, buf[0],
 436                                           INET6_ADDRSTRLEN),
 437                                 dp->prefixlen,
 438                                 inet_ntop(sp->family, &sp->u.prefix, buf[1],
 439                                           INET6_ADDRSTRLEN),
 440                                 sp->prefixlen, vrf_id,
 441                                 bfd_get_status_str(status));
 442                 }
 443         }
 444
 445         zebra_interface_bfd_update(ifp, dp, sp, status, vrf_id);
 446 }
 447
 448 static int zebra_ptm_handle_bfd_msg(void *arg, void *in_ctxt,
 449                                     struct interface *ifp)
 450 {
 451         char bfdst_str[32];
 452         char dest_str[64];
 453         char src_str[64];
 454         char vrf_str[64];
 455         struct prefix dest_prefix;
 456         struct prefix src_prefix;
 457         vrf_id_t vrf_id;
 458
 459         ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDSTATUS_STR, bfdst_str);
 460
 461         if (bfdst_str[0] == '\0') {
 462                 return -1;
 463         }
 464
 465         ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDDEST_STR, dest_str);
 466
 467         if (dest_str[0] == '\0') {
 468                 zlog_debug("%s: Key %s not found in PTM msg", __func__,
 469                            ZEBRA_PTM_BFDDEST_STR);
 470                 return -1;
 471         }
 472
 473         ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDSRC_STR, src_str);
 474
 475         if (src_str[0] == '\0') {
 476                 zlog_debug("%s: Key %s not found in PTM msg", __func__,
 477                            ZEBRA_PTM_BFDSRC_STR);
 478                 return -1;
 479         }
 480
 481         ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDVRF_STR, vrf_str);
 482
 483         if (vrf_str[0] == '\0') {
 484                 zlog_debug("%s: Key %s not found in PTM msg", __func__,
 485                            ZEBRA_PTM_BFDVRF_STR);
 486                 return -1;
 487         }
 488
 489         if (IS_ZEBRA_DEBUG_EVENT)
 490                 zlog_debug(
 491                         "%s: Recv Port [%s] bfd status [%s] vrf [%s]"
 492                         " peer [%s] local [%s]",
 493                         __func__, ifp ? ifp->name : "N/A", bfdst_str, vrf_str,
 494                         dest_str, src_str);
 495
 496         if (str2prefix(dest_str, &dest_prefix) == 0) {
 497                 zlog_err("%s: Peer addr %s not found", __func__, dest_str);
 498                 return -1;
 499         }
 500
 501         memset(&src_prefix, 0, sizeof(struct prefix));
 502         if (strcmp(ZEBRA_PTM_INVALID_SRC_IP, src_str)) {
 503                 if (str2prefix(src_str, &src_prefix) == 0) {
 504                         zlog_err("%s: Local addr %s not found", __func__,
 505                                  src_str);
 506                         return -1;
 507                 }
 508         }
 509
 510         if (!strcmp(ZEBRA_PTM_INVALID_VRF, vrf_str) && ifp) {
 511                 vrf_id = ifp->vrf_id;
 512         } else {
 513                 vrf_id = vrf_name_to_id(vrf_str);
 514         }
 515
 516         if (!strcmp(bfdst_str, ZEBRA_PTM_BFDSTATUS_DOWN_STR)) {
 517                 if_bfd_session_update(ifp, &dest_prefix, &src_prefix,
 518                                       BFD_STATUS_DOWN, vrf_id);
 519         } else {
 520                 if_bfd_session_update(ifp, &dest_prefix, &src_prefix,
 521                                       BFD_STATUS_UP, vrf_id);
 522         }
 523
 524         return 0;
 525 }
 526
 527 static int zebra_ptm_handle_cbl_msg(void *arg, void *in_ctxt,
 528                                     struct interface *ifp, char *cbl_str)
 529 {
 530         int send_linkup = 0;
 531
 532         if (IS_ZEBRA_DEBUG_EVENT)
 533                 zlog_debug("%s: Recv Port [%s] cbl status [%s]", __func__,
 534                            ifp->name, cbl_str);
 535
 536         if (!strcmp(cbl_str, ZEBRA_PTM_PASS_STR)
 537             && (ifp->ptm_status != ZEBRA_PTM_STATUS_UP)) {
 538
 539                 if (ifp->ptm_status == ZEBRA_PTM_STATUS_DOWN)
 540                         send_linkup = 1;
 541                 ifp->ptm_status = ZEBRA_PTM_STATUS_UP;
 542                 if (ifp->ptm_enable && if_is_no_ptm_operative(ifp)
 543                     && send_linkup)
 544                         if_up(ifp);
 545         } else if (!strcmp(cbl_str, ZEBRA_PTM_FAIL_STR)
 546                    && (ifp->ptm_status != ZEBRA_PTM_STATUS_DOWN)) {
 547                 ifp->ptm_status = ZEBRA_PTM_STATUS_DOWN;
 548                 if (ifp->ptm_enable && if_is_no_ptm_operative(ifp))
 549                         if_down(ifp);
 550         }
 551
 552         return 0;
 553 }
 554
 555 /*
 556  * zebra_ptm_handle_msg_cb - The purpose of this callback function is to handle
 557  *  all the command responses and notifications received from PTM.
 558  *
 559  * Command responses: Upon establishing connection with PTM, Zebra requests
 560  *  status of all interfaces using 'get-status' command if global ptm-enable
 561  *  knob is enabled. As a response to the get-status command PTM sends status
 562  *  of all the interfaces as command responses. All other type of command
 563  *  responses with cmd_status key word  are dropped. The sole purpose of
 564  *  registering this function as callback for the command responses is to
 565  *  handle the responses to get-status command.
 566  *
 567  * Notifications: Cable status and BFD session status changes are sent as
 568  *  notifications by PTM. So, this function is also the callback function for
 569  *  processing all the notifications from the PTM.
 570  *
 571  */
 572 static int zebra_ptm_handle_msg_cb(void *arg, void *in_ctxt)
 573 {
 574         struct interface *ifp = NULL;
 575         char port_str[128];
 576         char cbl_str[32];
 577         char cmd_status_str[32];
 578
 579         ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_CMD_STATUS_STR,
 580                                 cmd_status_str);
 581
 582         /* Drop command response messages */
 583         if (cmd_status_str[0] != '\0') {
 584                 return 0;
 585         }
 586
 587         ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_PORT_STR, port_str);
 588
 589         if (port_str[0] == '\0') {
 590                 zlog_debug("%s: Key %s not found in PTM msg", __func__,
 591                            ZEBRA_PTM_PORT_STR);
 592                 return -1;
 593         }
 594
 595         if (strcmp(ZEBRA_PTM_INVALID_PORT_NAME, port_str)) {
 596                 ifp = if_lookup_by_name_all_vrf(port_str);
 597
 598                 if (!ifp) {
 599                         zlog_err("%s: %s not found in interface list", __func__,
 600                                  port_str);
 601                         return -1;
 602                 }
 603         }
 604
 605         ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_CBL_STR, cbl_str);
 606
 607         if (cbl_str[0] == '\0') {
 608                 return zebra_ptm_handle_bfd_msg(arg, in_ctxt, ifp);
 609         } else {
 610                 if (ifp) {
 611                         return zebra_ptm_handle_cbl_msg(arg, in_ctxt, ifp,
 612                                                         cbl_str);
 613                 } else {
 614                         return -1;
 615                 }
 616         }
 617 }
 618
 619 int zebra_ptm_sock_read(struct thread *thread)
 620 {
 621         int sock, done = 0;
 622         int rc;
 623
 624         errno = 0;
 625         sock = THREAD_FD(thread);
 626
 627         if (sock == -1)
 628                 return -1;
 629
 630         /* PTM communicates in CSV format */
 631         while (!done) {
 632                 rc = ptm_lib_process_msg(ptm_hdl, sock, ptm_cb.in_data,
 633                                          ZEBRA_PTM_MAX_SOCKBUF, NULL);
 634                 if (rc <= 0)
 635                         break;
 636         }
 637
 638         if (rc <= 0) {
 639                 if (((rc == 0) && !errno)
 640                     || (errno && (errno != EWOULDBLOCK) && (errno != EAGAIN))) {
 641                         zlog_warn("%s routing socket error: %s(%d) bytes %d",
 642                                   __func__, safe_strerror(errno), errno, rc);
 643
 644                         close(ptm_cb.ptm_sock);
 645                         ptm_cb.ptm_sock = -1;
 646                         zebra_ptm_reset_status(0);
 647                         ptm_cb.t_timer = NULL;
 648                         thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
 649                                          ptm_cb.reconnect_time,
 650                                          &ptm_cb.t_timer);
 651                         return (-1);
 652                 }
 653         }
 654
 655         ptm_cb.t_read = NULL;
 656         thread_add_read(zebrad.master, zebra_ptm_sock_read, NULL,
 657                         ptm_cb.ptm_sock, &ptm_cb.t_read);
 658
 659         return 0;
 660 }
 661
 662 /* BFD peer/dst register/update */
 663 int zebra_ptm_bfd_dst_register(struct zserv *client, int sock, u_short length,
 664                                int command, struct zebra_vrf *zvrf)
 665 {
 666         struct stream *s;
 667         struct prefix src_p;
 668         struct prefix dst_p;
 669         u_char multi_hop;
 670         u_char multi_hop_cnt;
 671         u_char detect_mul;
 672         unsigned int min_rx_timer;
 673         unsigned int min_tx_timer;
 674         char if_name[INTERFACE_NAMSIZ];
 675         u_char len;
 676         void *out_ctxt;
 677         char buf[INET6_ADDRSTRLEN];
 678         char tmp_buf[64];
 679         int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
 680         unsigned int pid;
 681
 682         if (command == ZEBRA_BFD_DEST_UPDATE)
 683                 client->bfd_peer_upd8_cnt++;
 684         else
 685                 client->bfd_peer_add_cnt++;
 686
 687         if (IS_ZEBRA_DEBUG_EVENT)
 688                 zlog_debug("bfd_dst_register msg from client %s: length=%d",
 689                            zebra_route_string(client->proto), length);
 690
 691         if (ptm_cb.ptm_sock == -1) {
 692                 ptm_cb.t_timer = NULL;
 693                 thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
 694                                  ptm_cb.reconnect_time, &ptm_cb.t_timer);
 695                 return -1;
 696         }
 697
 698         ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt);
 699         sprintf(tmp_buf, "%s", ZEBRA_PTM_BFD_START_CMD);
 700         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf);
 701         sprintf(tmp_buf, "%s", zebra_route_string(client->proto));
 702         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD,
 703                            tmp_buf);
 704
 705         s = client->ibuf;
 706
 707         pid = stream_getl(s);
 708         sprintf(tmp_buf, "%d", pid);
 709         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD,
 710                            tmp_buf);
 711
 712         dst_p.family = stream_getw(s);
 713
 714         if (dst_p.family == AF_INET)
 715                 dst_p.prefixlen = IPV4_MAX_BYTELEN;
 716         else
 717                 dst_p.prefixlen = IPV6_MAX_BYTELEN;
 718
 719         stream_get(&dst_p.u.prefix, s, dst_p.prefixlen);
 720         if (dst_p.family == AF_INET) {
 721                 inet_ntop(AF_INET, &dst_p.u.prefix4, buf, sizeof(buf));
 722                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 723                                    ZEBRA_PTM_BFD_DST_IP_FIELD, buf);
 724         } else {
 725                 inet_ntop(AF_INET6, &dst_p.u.prefix6, buf, sizeof(buf));
 726                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 727                                    ZEBRA_PTM_BFD_DST_IP_FIELD, buf);
 728         }
 729
 730         min_rx_timer = stream_getl(s);
 731         sprintf(tmp_buf, "%d", min_rx_timer);
 732         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MIN_RX_FIELD,
 733                            tmp_buf);
 734         min_tx_timer = stream_getl(s);
 735         sprintf(tmp_buf, "%d", min_tx_timer);
 736         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MIN_TX_FIELD,
 737                            tmp_buf);
 738         detect_mul = stream_getc(s);
 739         sprintf(tmp_buf, "%d", detect_mul);
 740         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DETECT_MULT_FIELD,
 741                            tmp_buf);
 742
 743         multi_hop = stream_getc(s);
 744         if (multi_hop) {
 745                 sprintf(tmp_buf, "%d", 1);
 746                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 747                                    ZEBRA_PTM_BFD_MULTI_HOP_FIELD, tmp_buf);
 748                 src_p.family = stream_getw(s);
 749
 750                 if (src_p.family == AF_INET)
 751                         src_p.prefixlen = IPV4_MAX_BYTELEN;
 752                 else
 753                         src_p.prefixlen = IPV6_MAX_BYTELEN;
 754
 755                 stream_get(&src_p.u.prefix, s, src_p.prefixlen);
 756                 if (src_p.family == AF_INET) {
 757                         inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf));
 758                         ptm_lib_append_msg(ptm_hdl, out_ctxt,
 759                                            ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
 760                 } else {
 761                         inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf));
 762                         ptm_lib_append_msg(ptm_hdl, out_ctxt,
 763                                            ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
 764                 }
 765
 766                 multi_hop_cnt = stream_getc(s);
 767                 sprintf(tmp_buf, "%d", multi_hop_cnt);
 768                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 769                                    ZEBRA_PTM_BFD_MAX_HOP_CNT_FIELD, tmp_buf);
 770
 771                 if (zvrf_id(zvrf) != VRF_DEFAULT)
 772                         ptm_lib_append_msg(ptm_hdl, out_ctxt,
 773                                            ZEBRA_PTM_BFD_VRF_NAME_FIELD,
 774                                            zvrf_name(zvrf));
 775         } else {
 776                 if (dst_p.family == AF_INET6) {
 777                         src_p.family = stream_getw(s);
 778
 779                         if (src_p.family == AF_INET)
 780                                 src_p.prefixlen = IPV4_MAX_BYTELEN;
 781                         else
 782                                 src_p.prefixlen = IPV6_MAX_BYTELEN;
 783
 784                         stream_get(&src_p.u.prefix, s, src_p.prefixlen);
 785                         if (src_p.family == AF_INET) {
 786                                 inet_ntop(AF_INET, &src_p.u.prefix4, buf,
 787                                           sizeof(buf));
 788                                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 789                                                    ZEBRA_PTM_BFD_SRC_IP_FIELD,
 790                                                    buf);
 791                         } else {
 792                                 inet_ntop(AF_INET6, &src_p.u.prefix6, buf,
 793                                           sizeof(buf));
 794                                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 795                                                    ZEBRA_PTM_BFD_SRC_IP_FIELD,
 796                                                    buf);
 797                         }
 798                 }
 799                 len = stream_getc(s);
 800                 stream_get(if_name, s, len);
 801                 if_name[len] = '\0';
 802
 803                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 804                                    ZEBRA_PTM_BFD_IFNAME_FIELD, if_name);
 805         }
 806
 807         sprintf(tmp_buf, "%d", 1);
 808         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEND_EVENT,
 809                            tmp_buf);
 810
 811         ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len);
 812
 813         if (IS_ZEBRA_DEBUG_SEND)
 814                 zlog_debug("%s: Sent message (%d) %s", __func__, data_len,
 815                            ptm_cb.out_data);
 816         zebra_ptm_send_message(ptm_cb.out_data, data_len);
 817         return 0;
 818 }
 819
 820 /* BFD peer/dst deregister */
 821 int zebra_ptm_bfd_dst_deregister(struct zserv *client, int sock, u_short length,
 822                                  struct zebra_vrf *zvrf)
 823 {
 824         struct stream *s;
 825         struct prefix src_p;
 826         struct prefix dst_p;
 827         u_char multi_hop;
 828         char if_name[INTERFACE_NAMSIZ];
 829         u_char len;
 830         char buf[INET6_ADDRSTRLEN];
 831         char tmp_buf[64];
 832         int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
 833         void *out_ctxt;
 834         unsigned int pid;
 835
 836         client->bfd_peer_del_cnt++;
 837
 838         if (IS_ZEBRA_DEBUG_EVENT)
 839                 zlog_debug("bfd_dst_deregister msg from client %s: length=%d",
 840                            zebra_route_string(client->proto), length);
 841
 842         if (ptm_cb.ptm_sock == -1) {
 843                 ptm_cb.t_timer = NULL;
 844                 thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
 845                                  ptm_cb.reconnect_time, &ptm_cb.t_timer);
 846                 return -1;
 847         }
 848
 849         ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt);
 850
 851         sprintf(tmp_buf, "%s", ZEBRA_PTM_BFD_STOP_CMD);
 852         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf);
 853
 854         sprintf(tmp_buf, "%s", zebra_route_string(client->proto));
 855         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD,
 856                            tmp_buf);
 857
 858         s = client->ibuf;
 859
 860         pid = stream_getl(s);
 861         sprintf(tmp_buf, "%d", pid);
 862         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD,
 863                            tmp_buf);
 864
 865         dst_p.family = stream_getw(s);
 866
 867         if (dst_p.family == AF_INET)
 868                 dst_p.prefixlen = IPV4_MAX_BYTELEN;
 869         else
 870                 dst_p.prefixlen = IPV6_MAX_BYTELEN;
 871
 872         stream_get(&dst_p.u.prefix, s, dst_p.prefixlen);
 873         if (dst_p.family == AF_INET)
 874                 inet_ntop(AF_INET, &dst_p.u.prefix4, buf, sizeof(buf));
 875         else
 876                 inet_ntop(AF_INET6, &dst_p.u.prefix6, buf, sizeof(buf));
 877         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DST_IP_FIELD, buf);
 878
 879
 880         multi_hop = stream_getc(s);
 881         if (multi_hop) {
 882                 sprintf(tmp_buf, "%d", 1);
 883                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 884                                    ZEBRA_PTM_BFD_MULTI_HOP_FIELD, tmp_buf);
 885
 886                 src_p.family = stream_getw(s);
 887
 888                 if (src_p.family == AF_INET)
 889                         src_p.prefixlen = IPV4_MAX_BYTELEN;
 890                 else
 891                         src_p.prefixlen = IPV6_MAX_BYTELEN;
 892
 893                 stream_get(&src_p.u.prefix, s, src_p.prefixlen);
 894                 if (src_p.family == AF_INET)
 895                         inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf));
 896                 else
 897                         inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf));
 898                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 899                                    ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
 900
 901                 if (zvrf_id(zvrf) != VRF_DEFAULT)
 902                         ptm_lib_append_msg(ptm_hdl, out_ctxt,
 903                                            ZEBRA_PTM_BFD_VRF_NAME_FIELD,
 904                                            zvrf_name(zvrf));
 905         } else {
 906                 if (dst_p.family == AF_INET6) {
 907                         src_p.family = stream_getw(s);
 908
 909                         if (src_p.family == AF_INET)
 910                                 src_p.prefixlen = IPV4_MAX_BYTELEN;
 911                         else
 912                                 src_p.prefixlen = IPV6_MAX_BYTELEN;
 913
 914                         stream_get(&src_p.u.prefix, s, src_p.prefixlen);
 915                         if (src_p.family == AF_INET) {
 916                                 inet_ntop(AF_INET, &src_p.u.prefix4, buf,
 917                                           sizeof(buf));
 918                                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 919                                                    ZEBRA_PTM_BFD_SRC_IP_FIELD,
 920                                                    buf);
 921                         } else {
 922                                 inet_ntop(AF_INET6, &src_p.u.prefix6, buf,
 923                                           sizeof(buf));
 924                                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 925                                                    ZEBRA_PTM_BFD_SRC_IP_FIELD,
 926                                                    buf);
 927                         }
 928                 }
 929
 930                 len = stream_getc(s);
 931                 stream_get(if_name, s, len);
 932                 if_name[len] = '\0';
 933
 934                 ptm_lib_append_msg(ptm_hdl, out_ctxt,
 935                                    ZEBRA_PTM_BFD_IFNAME_FIELD, if_name);
 936         }
 937
 938         ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len);
 939         if (IS_ZEBRA_DEBUG_SEND)
 940                 zlog_debug("%s: Sent message (%d) %s", __func__, data_len,
 941                            ptm_cb.out_data);
 942
 943         zebra_ptm_send_message(ptm_cb.out_data, data_len);
 944         return 0;
 945 }
 946
 947 /* BFD client register */
 948 int zebra_ptm_bfd_client_register(struct zserv *client, int sock,
 949                                   u_short length)
 950 {
 951         struct stream *s;
 952         unsigned int pid;
 953         void *out_ctxt;
 954         char tmp_buf[64];
 955         int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
 956
 957         client->bfd_client_reg_cnt++;
 958
 959         if (IS_ZEBRA_DEBUG_EVENT)
 960                 zlog_debug("bfd_client_register msg from client %s: length=%d",
 961                            zebra_route_string(client->proto), length);
 962
 963         if (ptm_cb.ptm_sock == -1) {
 964                 ptm_cb.t_timer = NULL;
 965                 thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
 966                                  ptm_cb.reconnect_time, &ptm_cb.t_timer);
 967                 return -1;
 968         }
 969
 970         ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt);
 971
 972         sprintf(tmp_buf, "%s", ZEBRA_PTM_BFD_CLIENT_REG_CMD);
 973         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf);
 974
 975         sprintf(tmp_buf, "%s", zebra_route_string(client->proto));
 976         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD,
 977                            tmp_buf);
 978
 979         s = client->ibuf;
 980
 981         pid = stream_getl(s);
 982         sprintf(tmp_buf, "%d", pid);
 983         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD,
 984                            tmp_buf);
 985
 986         ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len);
 987
 988         if (IS_ZEBRA_DEBUG_SEND)
 989                 zlog_debug("%s: Sent message (%d) %s", __func__, data_len,
 990                            ptm_cb.out_data);
 991         zebra_ptm_send_message(ptm_cb.out_data, data_len);
 992
 993         SET_FLAG(ptm_cb.client_flags[client->proto],
 994                  ZEBRA_PTM_BFD_CLIENT_FLAG_REG);
 995         return 0;
 996 }
 997
 998 /* BFD client deregister */
 999 void zebra_ptm_bfd_client_deregister(int proto)
1000 {
1001         void *out_ctxt;
1002         char tmp_buf[64];
1003         int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
1004
1005         if (proto != ZEBRA_ROUTE_OSPF && proto != ZEBRA_ROUTE_BGP
1006             && proto != ZEBRA_ROUTE_OSPF6 && proto != ZEBRA_ROUTE_PIM)
1007                 return;
1008
1009         if (IS_ZEBRA_DEBUG_EVENT)
1010                 zlog_err("bfd_client_deregister msg for client %s",
1011                          zebra_route_string(proto));
1012
1013         if (ptm_cb.ptm_sock == -1) {
1014                 ptm_cb.t_timer = NULL;
1015                 thread_add_timer(zebrad.master, zebra_ptm_connect, NULL,
1016                                  ptm_cb.reconnect_time, &ptm_cb.t_timer);
1017                 return;
1018         }
1019
1020         ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt);
1021
1022         sprintf(tmp_buf, "%s", ZEBRA_PTM_BFD_CLIENT_DEREG_CMD);
1023         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf);
1024
1025         sprintf(tmp_buf, "%s", zebra_route_string(proto));
1026         ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD,
1027                            tmp_buf);
1028
1029         ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len);
1030
1031         if (IS_ZEBRA_DEBUG_SEND)
1032                 zlog_debug("%s: Sent message (%d) %s", __func__, data_len,
1033                            ptm_cb.out_data);
1034
1035         zebra_ptm_send_message(ptm_cb.out_data, data_len);
1036         UNSET_FLAG(ptm_cb.client_flags[proto], ZEBRA_PTM_BFD_CLIENT_FLAG_REG);
1037 }
1038
1039 int zebra_ptm_get_enable_state(void)
1040 {
1041         return ptm_cb.ptm_enable;
1042 }
1043
1044 /*
1045  * zebra_ptm_get_status_str - Convert status to a display string.
1046  */
1047 static const char *zebra_ptm_get_status_str(int status)
1048 {
1049         switch (status) {
1050         case ZEBRA_PTM_STATUS_DOWN:
1051                 return "fail";
1052         case ZEBRA_PTM_STATUS_UP:
1053                 return "pass";
1054         case ZEBRA_PTM_STATUS_UNKNOWN:
1055         default:
1056                 return "n/a";
1057         }
1058 }
1059
1060 void zebra_ptm_show_status(struct vty *vty, struct interface *ifp)
1061 {
1062         vty_out(vty, "  PTM status: ");
1063         if (ifp->ptm_enable) {
1064                 vty_out(vty, "%s\n", zebra_ptm_get_status_str(ifp->ptm_status));
1065         } else {
1066                 vty_out(vty, "disabled\n");
1067         }
1068 }
1069
1070 void zebra_ptm_send_status_req(void)
1071 {
1072         void *out_ctxt;
1073         int len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
1074
1075         if (ptm_cb.ptm_enable) {
1076                 ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL,
1077                                  &out_ctxt);
1078                 ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR,
1079                                    ZEBRA_PTM_GET_STATUS_CMD);
1080                 ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &len);
1081
1082                 zebra_ptm_send_message(ptm_cb.out_data, len);
1083         }
1084 }
1085
1086 void zebra_ptm_reset_status(int ptm_disable)
1087 {
1088         struct vrf *vrf;
1089         struct listnode *i;
1090         struct interface *ifp;
1091         int send_linkup;
1092
1093         RB_FOREACH(vrf, vrf_id_head, &vrfs_by_id)
1094         for (ALL_LIST_ELEMENTS_RO(vrf->iflist, i, ifp)) {
1095                 send_linkup = 0;
1096                 if (ifp->ptm_enable) {
1097                         if (!if_is_operative(ifp))
1098                                 send_linkup = 1;
1099
1100                         if (ptm_disable)
1101                                 ifp->ptm_enable = ZEBRA_IF_PTM_ENABLE_OFF;
1102                         ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN;
1103
1104                         if (if_is_operative(ifp) && send_linkup) {
1105                                 if (IS_ZEBRA_DEBUG_EVENT)
1106                                         zlog_debug(
1107                                                 "%s: Bringing up interface %s",
1108                                                 __func__, ifp->name);
1109                                 if_up(ifp);
1110                         }
1111                 }
1112         }
1113 }
1114
1115 void zebra_ptm_if_init(struct zebra_if *zebra_ifp)
1116 {
1117         zebra_ifp->ptm_enable = ZEBRA_IF_PTM_ENABLE_UNSPEC;
1118 }
1119
1120 void zebra_ptm_if_set_ptm_state(struct interface *ifp,
1121                                 struct zebra_if *zebra_ifp)
1122 {
1123         if (zebra_ifp && zebra_ifp->ptm_enable != ZEBRA_IF_PTM_ENABLE_UNSPEC)
1124                 ifp->ptm_enable = zebra_ifp->ptm_enable;
1125 }
1126
1127 void zebra_ptm_if_write(struct vty *vty, struct zebra_if *zebra_ifp)
1128 {
1129         if (zebra_ifp->ptm_enable == ZEBRA_IF_PTM_ENABLE_OFF)
1130                 vty_out(vty, " no ptm-enable\n");
1131 }