bgpd/bgp_flowspec_vty.c

   1 /* BGP FlowSpec VTY
   2  * Copyright (C) 2018 6WIND
   3  *
   4  * FRRouting is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2, or (at your option) any
   7  * later version.
   8  *
   9  * FRRouting is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; see the file COPYING; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <zebra.h>
  20 #include "command.h"
  21
  22 #include "bgpd/bgpd.h"
  23 #include "bgpd/bgp_table.h"
  24 #include "bgpd/bgp_attr.h"
  25 #include "bgpd/bgp_ecommunity.h"
  26 #include "bgpd/bgp_vty.h"
  27 #include "bgpd/bgp_route.h"
  28 #include "bgpd/bgp_aspath.h"
  29 #include "bgpd/bgp_flowspec.h"
  30 #include "bgpd/bgp_flowspec_util.h"
  31 #include "bgpd/bgp_flowspec_private.h"
  32 #include "bgpd/bgp_debug.h"
  33 #include "bgpd/bgp_pbr.h"
  34
  35 /* Local Structures and variables declarations
  36  * This code block hosts the struct declared that host the flowspec rules
  37  * as well as some structure used to convert to stringx
  38  */
  39
  40 static const struct message bgp_flowspec_display_large[] = {
  41         {FLOWSPEC_DEST_PREFIX, "Destination Address"},
  42         {FLOWSPEC_SRC_PREFIX, "Source Address"},
  43         {FLOWSPEC_IP_PROTOCOL, "IP Protocol"},
  44         {FLOWSPEC_PORT, "Port"},
  45         {FLOWSPEC_DEST_PORT, "Destination Port"},
  46         {FLOWSPEC_SRC_PORT, "Source Port"},
  47         {FLOWSPEC_ICMP_TYPE, "ICMP Type"},
  48         {FLOWSPEC_ICMP_CODE, "ICMP Code"},
  49         {FLOWSPEC_TCP_FLAGS, "TCP Flags"},
  50         {FLOWSPEC_PKT_LEN, "Packet Length"},
  51         {FLOWSPEC_DSCP, "DSCP field"},
  52         {FLOWSPEC_FRAGMENT, "Packet Fragment"},
  53         {FLOWSPEC_FLOW_LABEL, "Packet Flow Label"},
  54         {0}
  55 };
  56
  57 static const struct message bgp_flowspec_display_min[] = {
  58         {FLOWSPEC_DEST_PREFIX, "to"},
  59         {FLOWSPEC_SRC_PREFIX, "from"},
  60         {FLOWSPEC_IP_PROTOCOL, "proto"},
  61         {FLOWSPEC_PORT, "port"},
  62         {FLOWSPEC_DEST_PORT, "dstp"},
  63         {FLOWSPEC_SRC_PORT, "srcp"},
  64         {FLOWSPEC_ICMP_TYPE, "type"},
  65         {FLOWSPEC_ICMP_CODE, "code"},
  66         {FLOWSPEC_TCP_FLAGS, "tcp"},
  67         {FLOWSPEC_PKT_LEN, "pktlen"},
  68         {FLOWSPEC_DSCP, "dscp"},
  69         {FLOWSPEC_FRAGMENT, "pktfrag"},
  70         {FLOWSPEC_FLOW_LABEL, "flwlbl"},
  71         {0}
  72 };
  73
  74 #define FS_STRING_UPDATE(count, ptr, format, remaining_len) do {        \
  75                 int _len_written;                                       \
  76                                                                         \
  77                 if (((format) == NLRI_STRING_FORMAT_DEBUG) && (count)) {\
  78                         _len_written = snprintf((ptr), (remaining_len), \
  79                                                 ", ");                  \
  80                         (remaining_len) -= _len_written;                \
  81                         (ptr) += _len_written;                          \
  82                 } else if (((format) == NLRI_STRING_FORMAT_MIN)         \
  83                            && (count)) {                                \
  84                         _len_written = snprintf((ptr), (remaining_len), \
  85                                                 " ");                   \
  86                         (remaining_len) -= _len_written;                \
  87                         (ptr) += _len_written;                          \
  88                 }                                                       \
  89                 count++;                                                \
  90         } while (0)
  91
  92 /* Parse FLOWSPEC NLRI
  93  * passed return_string string has assumed length
  94  * BGP_FLOWSPEC_STRING_DISPLAY_MAX
  95  */
  96 void bgp_fs_nlri_get_string(unsigned char *nlri_content, size_t len,
  97                             char *return_string, int format,
  98                             json_object *json_path,
  99                             afi_t afi)
 100 {
 101         uint32_t offset = 0;
 102         int type;
 103         int ret = 0, error = 0;
 104         char *ptr = return_string;
 105         char local_string[BGP_FLOWSPEC_STRING_DISPLAY_MAX];
 106         int count = 0;
 107         char extra[2] = "";
 108         char pre_extra[2] = "";
 109         const struct message *bgp_flowspec_display;
 110         enum bgp_flowspec_util_nlri_t type_util;
 111         int len_string = BGP_FLOWSPEC_STRING_DISPLAY_MAX;
 112         int len_written;
 113
 114         if (format == NLRI_STRING_FORMAT_LARGE) {
 115                 snprintf(pre_extra, sizeof(pre_extra), "\t");
 116                 snprintf(extra, sizeof(extra), "\n");
 117                 bgp_flowspec_display = bgp_flowspec_display_large;
 118         } else
 119                 bgp_flowspec_display = bgp_flowspec_display_min;
 120         /* if needed. type_util can be set to other values */
 121         type_util = BGP_FLOWSPEC_RETURN_STRING;
 122         error = 0;
 123         while (offset < len-1 && error >= 0) {
 124                 type = nlri_content[offset];
 125                 offset++;
 126                 switch (type) {
 127                 case FLOWSPEC_DEST_PREFIX:
 128                 case FLOWSPEC_SRC_PREFIX:
 129                         ret = bgp_flowspec_ip_address(
 130                                                 type_util,
 131                                                 nlri_content+offset,
 132                                                 len - offset,
 133                                                 local_string, &error,
 134                                                 afi, NULL);
 135                         if (ret <= 0)
 136                                 break;
 137                         if (json_path) {
 138                                 json_object_string_add(json_path,
 139                                      lookup_msg(bgp_flowspec_display, type, ""),
 140                                      local_string);
 141                                 break;
 142                         }
 143                         FS_STRING_UPDATE(count, ptr, format, len_string);
 144                         len_written = snprintf(ptr, len_string, "%s%s %s%s",
 145                                         pre_extra,
 146                                         lookup_msg(bgp_flowspec_display,
 147                                                    type, ""),
 148                                         local_string, extra);
 149                         len_string -= len_written;
 150                         ptr += len_written;
 151                         break;
 152                 case FLOWSPEC_FLOW_LABEL:
 153                 case FLOWSPEC_IP_PROTOCOL:
 154                 case FLOWSPEC_PORT:
 155                 case FLOWSPEC_DEST_PORT:
 156                 case FLOWSPEC_SRC_PORT:
 157                 case FLOWSPEC_ICMP_TYPE:
 158                 case FLOWSPEC_ICMP_CODE:
 159                         ret = bgp_flowspec_op_decode(type_util,
 160                                                      nlri_content+offset,
 161                                                      len - offset,
 162                                                      local_string, &error);
 163                         if (ret <= 0)
 164                                 break;
 165                         if (json_path) {
 166                                 json_object_string_add(json_path,
 167                                      lookup_msg(bgp_flowspec_display, type, ""),
 168                                      local_string);
 169                                 break;
 170                         }
 171                         FS_STRING_UPDATE(count, ptr, format, len_string);
 172                         len_written = snprintf(ptr, len_string, "%s%s %s%s",
 173                                         pre_extra,
 174                                         lookup_msg(bgp_flowspec_display,
 175                                         type, ""),
 176                                      local_string, extra);
 177                         len_string -= len_written;
 178                         ptr += len_written;
 179                         break;
 180                 case FLOWSPEC_TCP_FLAGS:
 181                         ret = bgp_flowspec_bitmask_decode(
 182                                               type_util,
 183                                               nlri_content+offset,
 184                                               len - offset,
 185                                               local_string, &error);
 186                         if (ret <= 0)
 187                                 break;
 188                         if (json_path) {
 189                                 json_object_string_add(json_path,
 190                                      lookup_msg(bgp_flowspec_display,
 191                                                 type, ""),
 192                                      local_string);
 193                                 break;
 194                         }
 195                         FS_STRING_UPDATE(count, ptr, format, len_string);
 196                         len_written = snprintf(ptr, len_string, "%s%s %s%s",
 197                                         pre_extra,
 198                                         lookup_msg(bgp_flowspec_display,
 199                                                    type, ""),
 200                                         local_string, extra);
 201                         len_string -= len_written;
 202                         ptr += len_written;
 203                         break;
 204                 case FLOWSPEC_PKT_LEN:
 205                 case FLOWSPEC_DSCP:
 206                         ret = bgp_flowspec_op_decode(
 207                                                 type_util,
 208                                                 nlri_content + offset,
 209                                                 len - offset, local_string,
 210                                                 &error);
 211                         if (ret <= 0)
 212                                 break;
 213                         if (json_path) {
 214                                 json_object_string_add(json_path,
 215                                     lookup_msg(bgp_flowspec_display, type, ""),
 216                                     local_string);
 217                                 break;
 218                         }
 219                         FS_STRING_UPDATE(count, ptr, format, len_string);
 220                         len_written = snprintf(ptr, len_string, "%s%s %s%s",
 221                                         pre_extra,
 222                                         lookup_msg(bgp_flowspec_display,
 223                                         type, ""),
 224                                      local_string, extra);
 225                         len_string -= len_written;
 226                         ptr += len_written;
 227                         break;
 228                 case FLOWSPEC_FRAGMENT:
 229                         ret = bgp_flowspec_bitmask_decode(
 230                                               type_util,
 231                                               nlri_content+offset,
 232                                               len - offset,
 233                                               local_string, &error);
 234                         if (ret <= 0)
 235                                 break;
 236                         if (json_path) {
 237                                 json_object_string_add(json_path,
 238                                     lookup_msg(bgp_flowspec_display,
 239                                                type, ""),
 240                                     local_string);
 241                                 break;
 242                         }
 243                         FS_STRING_UPDATE(count, ptr, format, len_string);
 244                         len_written = snprintf(ptr, len_string, "%s%s %s%s",
 245                                         pre_extra,
 246                                         lookup_msg(bgp_flowspec_display,
 247                                         type, ""),
 248                                         local_string, extra);
 249                         len_string -= len_written;
 250                         ptr += len_written;
 251                         break;
 252                 default:
 253                         error = -1;
 254                         break;
 255                 }
 256                 offset += ret;
 257         }
 258 }
 259
 260 void route_vty_out_flowspec(struct vty *vty, const struct prefix *p,
 261                             struct bgp_path_info *path, int display,
 262                             json_object *json_paths)
 263 {
 264         struct attr *attr;
 265         char return_string[BGP_FLOWSPEC_STRING_DISPLAY_MAX];
 266         char *s1 = NULL, *s2 = NULL;
 267         json_object *json_nlri_path = NULL;
 268         json_object *json_ecom_path = NULL;
 269         json_object *json_time_path = NULL;
 270         char timebuf[BGP_UPTIME_LEN];
 271         struct ecommunity *ipv6_ecomm = NULL;
 272
 273         if (p == NULL || p->family != AF_FLOWSPEC)
 274                 return;
 275         if (json_paths) {
 276                 if (display == NLRI_STRING_FORMAT_JSON)
 277                         json_nlri_path = json_object_new_object();
 278                 else
 279                         json_nlri_path = json_paths;
 280         }
 281         if (display == NLRI_STRING_FORMAT_LARGE && path)
 282                 vty_out(vty, "BGP flowspec entry: (flags 0x%x)\n",
 283                         path->flags);
 284         bgp_fs_nlri_get_string((unsigned char *)
 285                                p->u.prefix_flowspec.ptr,
 286                                p->u.prefix_flowspec.prefixlen,
 287                                return_string,
 288                                display,
 289                                json_nlri_path,
 290                                family2afi(p->u.prefix_flowspec
 291                                           .family));
 292         if (display == NLRI_STRING_FORMAT_LARGE)
 293                 vty_out(vty, "%s", return_string);
 294         else if (display == NLRI_STRING_FORMAT_DEBUG)
 295                 vty_out(vty, "%s", return_string);
 296         else if (display == NLRI_STRING_FORMAT_MIN)
 297                 vty_out(vty, " %-30s", return_string);
 298         else if (json_paths && display == NLRI_STRING_FORMAT_JSON)
 299                 json_object_array_add(json_paths, json_nlri_path);
 300         if (!path)
 301                 return;
 302
 303         if (path->attr)
 304                 ipv6_ecomm = bgp_attr_get_ipv6_ecommunity(path->attr);
 305
 306         if (path->attr && (bgp_attr_get_ecommunity(path->attr) || ipv6_ecomm)) {
 307                 /* Print attribute */
 308                 attr = path->attr;
 309                 if (bgp_attr_get_ecommunity(attr))
 310                         s1 = ecommunity_ecom2str(bgp_attr_get_ecommunity(attr),
 311                                                  ECOMMUNITY_FORMAT_ROUTE_MAP,
 312                                                  0);
 313                 if (ipv6_ecomm)
 314                         s2 = ecommunity_ecom2str(
 315                                 ipv6_ecomm, ECOMMUNITY_FORMAT_ROUTE_MAP, 0);
 316                 if (!s1 && !s2)
 317                         return;
 318                 if (display == NLRI_STRING_FORMAT_LARGE)
 319                         vty_out(vty, "\t%s%s%s\n", s1 ? s1 : "",
 320                                 s2 && s1 ? " " : "", s2 ? s2 : "");
 321                 else if (display == NLRI_STRING_FORMAT_MIN)
 322                         vty_out(vty, "%s%s", s1 ? s1 : "", s2 ? s2 : "");
 323                 else if (json_paths) {
 324                         json_ecom_path = json_object_new_object();
 325                         if (s1)
 326                                 json_object_string_add(json_ecom_path,
 327                                                        "ecomlist", s1);
 328                         if (s2)
 329                                 json_object_string_add(json_ecom_path,
 330                                                        "ecom6list", s2);
 331                         if (display == NLRI_STRING_FORMAT_JSON)
 332                                 json_object_array_add(json_paths,
 333                                                       json_ecom_path);
 334                 }
 335                 if (display == NLRI_STRING_FORMAT_LARGE) {
 336                         char local_buff[INET6_ADDRSTRLEN];
 337
 338                         local_buff[0] = '\0';
 339                         if (p->u.prefix_flowspec.family == AF_INET
 340                             && attr->nexthop.s_addr != INADDR_ANY)
 341                                 inet_ntop(AF_INET,
 342                                           &attr->nexthop.s_addr,
 343                                           local_buff,
 344                                           INET6_ADDRSTRLEN);
 345                         else if (p->u.prefix_flowspec.family == AF_INET6 &&
 346                                  attr->mp_nexthop_len != 0 &&
 347                                  attr->mp_nexthop_len != BGP_ATTR_NHLEN_IPV4 &&
 348                                  attr->mp_nexthop_len != BGP_ATTR_NHLEN_VPNV4)
 349                                 inet_ntop(AF_INET6,
 350                                           &attr->mp_nexthop_global,
 351                                           local_buff,
 352                                           INET6_ADDRSTRLEN);
 353                         if (local_buff[0] != '\0')
 354                                 vty_out(vty, "\tNLRI NH %s\n",
 355                                         local_buff);
 356                 }
 357                 XFREE(MTYPE_ECOMMUNITY_STR, s1);
 358                 XFREE(MTYPE_ECOMMUNITY_STR, s2);
 359         }
 360         peer_uptime(path->uptime, timebuf, BGP_UPTIME_LEN, 0, NULL);
 361         if (display == NLRI_STRING_FORMAT_LARGE) {
 362                 vty_out(vty, "\treceived for %8s\n", timebuf);
 363         } else if (json_paths) {
 364                 json_time_path = json_object_new_object();
 365                 json_object_string_add(json_time_path,
 366                                        "time", timebuf);
 367                 if (display == NLRI_STRING_FORMAT_JSON)
 368                         json_object_array_add(json_paths, json_time_path);
 369         }
 370         if (display == NLRI_STRING_FORMAT_LARGE) {
 371                 struct bgp_path_info_extra *extra =
 372                         bgp_path_info_extra_get(path);
 373                 bool list_began = false;
 374
 375                 if (extra->bgp_fs_pbr && listcount(extra->bgp_fs_pbr)) {
 376                         struct listnode *node;
 377                         struct bgp_pbr_match_entry *bpme;
 378                         struct bgp_pbr_match *bpm;
 379                         struct list *list_bpm;
 380
 381                         list_bpm = list_new();
 382                         vty_out(vty, "\tinstalled in PBR");
 383                         for (ALL_LIST_ELEMENTS_RO(extra->bgp_fs_pbr,
 384                                                   node, bpme)) {
 385                                 bpm = bpme->backpointer;
 386                                 if (listnode_lookup(list_bpm, bpm))
 387                                         continue;
 388                                 listnode_add(list_bpm, bpm);
 389                                 if (!list_began) {
 390                                         vty_out(vty, " (");
 391                                         list_began = true;
 392                                 } else
 393                                         vty_out(vty, ", ");
 394                                 vty_out(vty, "%s", bpm->ipset_name);
 395                         }
 396                         list_delete(&list_bpm);
 397                 }
 398                 if (extra->bgp_fs_iprule && listcount(extra->bgp_fs_iprule)) {
 399                         struct listnode *node;
 400                         struct bgp_pbr_rule *bpr;
 401
 402                         if (!list_began)
 403                                 vty_out(vty, "\tinstalled in PBR");
 404                         for (ALL_LIST_ELEMENTS_RO(extra->bgp_fs_iprule,
 405                                                   node, bpr)) {
 406                                 if (!bpr->action)
 407                                         continue;
 408                                 if (!list_began) {
 409                                         vty_out(vty, " (");
 410                                         list_began = true;
 411                                 } else
 412                                         vty_out(vty, ", ");
 413                                 vty_out(vty, "-ipv4-rule %d action lookup %u-",
 414                                         bpr->priority,
 415                                         bpr->action->table_id);
 416                         }
 417                 }
 418                 if (list_began)
 419                         vty_out(vty, ")\n");
 420                 else
 421                         vty_out(vty, "\tnot installed in PBR\n");
 422         }
 423 }
 424
 425 int bgp_show_table_flowspec(struct vty *vty, struct bgp *bgp, afi_t afi,
 426                             struct bgp_table *table, enum bgp_show_type type,
 427                             void *output_arg, bool use_json, int is_last,
 428                             unsigned long *output_cum, unsigned long *total_cum)
 429 {
 430         struct bgp_path_info *pi;
 431         struct bgp_dest *dest;
 432         unsigned long total_count = 0;
 433         json_object *json_paths = NULL;
 434         int display = NLRI_STRING_FORMAT_LARGE;
 435
 436         if (type != bgp_show_type_detail)
 437                 return CMD_SUCCESS;
 438
 439         for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) {
 440                 pi = bgp_dest_get_bgp_path_info(dest);
 441                 if (pi == NULL)
 442                         continue;
 443                 if (use_json) {
 444                         json_paths = json_object_new_array();
 445                         display = NLRI_STRING_FORMAT_JSON;
 446                 }
 447                 for (; pi; pi = pi->next) {
 448                         total_count++;
 449                         route_vty_out_flowspec(vty, bgp_dest_get_prefix(dest),
 450                                                pi, display, json_paths);
 451                 }
 452                 if (use_json) {
 453                         vty_json(vty, json_paths);
 454                         json_paths = NULL;
 455                 }
 456         }
 457         if (total_count && !use_json)
 458                 vty_out(vty,
 459                         "\nDisplayed  %ld flowspec entries\n",
 460                         total_count);
 461         return CMD_SUCCESS;
 462 }
 463
 464 DEFUN (debug_bgp_flowspec,
 465        debug_bgp_flowspec_cmd,
 466        "debug bgp flowspec",
 467        DEBUG_STR
 468        BGP_STR
 469        "BGP allow flowspec debugging entries\n")
 470 {
 471         if (vty->node == CONFIG_NODE)
 472                 DEBUG_ON(flowspec, FLOWSPEC);
 473         else {
 474                 TERM_DEBUG_ON(flowspec, FLOWSPEC);
 475                 vty_out(vty, "BGP flowspec debugging is on\n");
 476         }
 477         return CMD_SUCCESS;
 478 }
 479
 480 DEFUN (no_debug_bgp_flowspec,
 481        no_debug_bgp_flowspec_cmd,
 482        "no debug bgp flowspec",
 483        NO_STR
 484        DEBUG_STR
 485        BGP_STR
 486        "BGP allow flowspec debugging entries\n")
 487 {
 488         if (vty->node == CONFIG_NODE)
 489                 DEBUG_OFF(flowspec, FLOWSPEC);
 490         else {
 491                 TERM_DEBUG_OFF(flowspec, FLOWSPEC);
 492                 vty_out(vty, "BGP flowspec debugging is off\n");
 493         }
 494         return CMD_SUCCESS;
 495 }
 496
 497 int bgp_fs_config_write_pbr(struct vty *vty, struct bgp *bgp,
 498                             afi_t afi, safi_t safi)
 499 {
 500         struct bgp_pbr_interface *pbr_if;
 501         bool declare_node = false;
 502         struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg;
 503         struct bgp_pbr_interface_head *head;
 504         bool bgp_pbr_interface_any;
 505
 506         if (!bgp_pbr_cfg || safi != SAFI_FLOWSPEC)
 507                 return 0;
 508         if (afi == AFI_IP) {
 509                 head = &(bgp_pbr_cfg->ifaces_by_name_ipv4);
 510                 bgp_pbr_interface_any = bgp_pbr_cfg->pbr_interface_any_ipv4;
 511         } else if (afi == AFI_IP6) {
 512                 head = &(bgp_pbr_cfg->ifaces_by_name_ipv6);
 513                 bgp_pbr_interface_any = bgp_pbr_cfg->pbr_interface_any_ipv6;
 514         } else {
 515                 return 0;
 516         }
 517         if (!RB_EMPTY(bgp_pbr_interface_head, head) ||
 518              !bgp_pbr_interface_any)
 519                 declare_node = true;
 520         RB_FOREACH (pbr_if, bgp_pbr_interface_head, head) {
 521                 vty_out(vty, "  local-install %s\n", pbr_if->name);
 522         }
 523         return declare_node ? 1 : 0;
 524 }
 525
 526 static int bgp_fs_local_install_interface(struct bgp *bgp,
 527                                           const char *no, const char *ifname,
 528                                           afi_t afi)
 529 {
 530         struct bgp_pbr_interface *pbr_if;
 531         struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg;
 532         struct bgp_pbr_interface_head *head;
 533         bool *bgp_pbr_interface_any;
 534
 535         if (!bgp_pbr_cfg)
 536                 return CMD_SUCCESS;
 537         if (afi == AFI_IP) {
 538                 head = &(bgp_pbr_cfg->ifaces_by_name_ipv4);
 539                 bgp_pbr_interface_any = &(bgp_pbr_cfg->pbr_interface_any_ipv4);
 540         } else {
 541                 head = &(bgp_pbr_cfg->ifaces_by_name_ipv6);
 542                 bgp_pbr_interface_any = &(bgp_pbr_cfg->pbr_interface_any_ipv6);
 543         }
 544         if (no) {
 545                 if (!ifname) {
 546                         if (*bgp_pbr_interface_any) {
 547                                 *bgp_pbr_interface_any = false;
 548                                 /* remove all other interface list */
 549                                 bgp_pbr_reset(bgp, afi);
 550                         }
 551                         return CMD_SUCCESS;
 552                 }
 553                 pbr_if = bgp_pbr_interface_lookup(ifname, head);
 554                 if (!pbr_if)
 555                         return CMD_SUCCESS;
 556                 RB_REMOVE(bgp_pbr_interface_head, head, pbr_if);
 557                 return CMD_SUCCESS;
 558         }
 559         if (ifname) {
 560                 pbr_if = bgp_pbr_interface_lookup(ifname, head);
 561                 if (pbr_if)
 562                         return CMD_SUCCESS;
 563                 pbr_if = XCALLOC(MTYPE_TMP,
 564                                  sizeof(struct bgp_pbr_interface));
 565                 strlcpy(pbr_if->name, ifname, INTERFACE_NAMSIZ);
 566                 RB_INSERT(bgp_pbr_interface_head, head, pbr_if);
 567                 *bgp_pbr_interface_any = false;
 568         } else {
 569                 /* set to default */
 570                 if (!*bgp_pbr_interface_any) {
 571                         /* remove all other interface list
 572                          */
 573                         bgp_pbr_reset(bgp, afi);
 574                         *bgp_pbr_interface_any = true;
 575                 }
 576         }
 577         return CMD_SUCCESS;
 578 }
 579
 580 DEFUN (bgp_fs_local_install_ifname,
 581         bgp_fs_local_install_ifname_cmd,
 582         "[no] local-install INTERFACE",
 583         NO_STR
 584         "Apply local policy routing\n"
 585         "Interface name\n")
 586 {
 587         struct bgp *bgp = VTY_GET_CONTEXT(bgp);
 588         int idx = 0;
 589         const char *no = strmatch(argv[0]->text, "no") ? "no" : NULL;
 590         char *ifname = argv_find(argv, argc, "INTERFACE", &idx) ?
 591                 argv[idx]->arg : NULL;
 592
 593         return bgp_fs_local_install_interface(bgp, no, ifname,
 594                                               bgp_node_afi(vty));
 595 }
 596
 597 extern int bgp_flowspec_display_match_per_ip(afi_t afi, struct bgp_table *rib,
 598                                              struct prefix *match,
 599                                              int prefix_check, struct vty *vty,
 600                                              bool use_json,
 601                                              json_object *json_paths)
 602 {
 603         struct bgp_dest *dest;
 604         const struct prefix *prefix;
 605         int display = 0;
 606
 607         for (dest = bgp_table_top(rib); dest; dest = bgp_route_next(dest)) {
 608                 prefix = bgp_dest_get_prefix(dest);
 609
 610                 if (prefix->family != AF_FLOWSPEC)
 611                         continue;
 612
 613                 if (bgp_flowspec_contains_prefix(prefix, match, prefix_check)) {
 614                         route_vty_out_flowspec(
 615                                 vty, prefix, bgp_dest_get_bgp_path_info(dest),
 616                                 use_json ? NLRI_STRING_FORMAT_JSON
 617                                          : NLRI_STRING_FORMAT_LARGE,
 618                                 json_paths);
 619                         display++;
 620                 }
 621         }
 622         return display;
 623 }
 624
 625 void bgp_flowspec_vty_init(void)
 626 {
 627         install_element(ENABLE_NODE, &debug_bgp_flowspec_cmd);
 628         install_element(CONFIG_NODE, &debug_bgp_flowspec_cmd);
 629         install_element(ENABLE_NODE, &no_debug_bgp_flowspec_cmd);
 630         install_element(CONFIG_NODE, &no_debug_bgp_flowspec_cmd);
 631         install_element(BGP_FLOWSPECV4_NODE, &bgp_fs_local_install_ifname_cmd);
 632         install_element(BGP_FLOWSPECV6_NODE, &bgp_fs_local_install_ifname_cmd);
 633 }