src/plugins/nat/nat44-ei/nat44_ei_api.c

   1 /*
   2  * Copyright (c) 2020 Cisco and/or its affiliates.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <vnet/ip/ip_types_api.h>
  18 #include <vlibmemory/api.h>
  19
  20 #include <vnet/fib/fib_table.h>
  21
  22 #include <nat/lib/nat_inlines.h>
  23 #include <nat/lib/ipfix_logging.h>
  24
  25 #include <nat/nat44-ei/nat44_ei.api_enum.h>
  26 #include <nat/nat44-ei/nat44_ei.api_types.h>
  27
  28 #include <nat/nat44-ei/nat44_ei_ha.h>
  29 #include <nat/nat44-ei/nat44_ei.h>
  30
  31 #define REPLY_MSG_ID_BASE nm->msg_id_base
  32 #include <vlibapi/api_helper_macros.h>
  33
  34 static void
  35 vl_api_nat44_ei_show_running_config_t_handler (
  36   vl_api_nat44_ei_show_running_config_t *mp)
  37 {
  38   vl_api_nat44_ei_show_running_config_reply_t *rmp;
  39   nat44_ei_main_t *nm = &nat44_ei_main;
  40   nat44_ei_config_t *rc = &nm->rconfig;
  41   int rv = 0;
  42
  43   REPLY_MACRO2_ZERO (
  44     VL_API_NAT44_EI_SHOW_RUNNING_CONFIG_REPLY, ({
  45       rmp->inside_vrf = htonl (rc->inside_vrf);
  46       rmp->outside_vrf = htonl (rc->outside_vrf);
  47       rmp->users = htonl (rc->users);
  48       rmp->sessions = htonl (rc->sessions);
  49       rmp->user_sessions = htonl (rc->user_sessions);
  50
  51       rmp->user_buckets = htonl (nm->user_buckets);
  52       rmp->translation_buckets = htonl (nm->translation_buckets);
  53
  54       rmp->timeouts.udp = htonl (nm->timeouts.udp);
  55       rmp->timeouts.tcp_established = htonl (nm->timeouts.tcp.established);
  56       rmp->timeouts.tcp_transitory = htonl (nm->timeouts.tcp.transitory);
  57       rmp->timeouts.icmp = htonl (nm->timeouts.icmp);
  58
  59       rmp->forwarding_enabled = nm->forwarding_enabled == 1;
  60       // consider how to split functionality between subplugins
  61       rmp->ipfix_logging_enabled = nat_ipfix_logging_enabled ();
  62
  63       if (rc->static_mapping_only)
  64         rmp->flags |= NAT44_EI_STATIC_MAPPING_ONLY;
  65       if (rc->connection_tracking)
  66         rmp->flags |= NAT44_EI_CONNECTION_TRACKING;
  67       if (rc->out2in_dpo)
  68         rmp->flags |= NAT44_EI_OUT2IN_DPO;
  69     }));
  70 }
  71
  72 static void
  73 vl_api_nat44_ei_set_workers_t_handler (vl_api_nat44_ei_set_workers_t *mp)
  74 {
  75   nat44_ei_main_t *nm = &nat44_ei_main;
  76   vl_api_nat44_ei_set_workers_reply_t *rmp;
  77   int rv = 0;
  78   uword *bitmap = 0;
  79   u64 mask;
  80
  81   mask = clib_net_to_host_u64 (mp->worker_mask);
  82
  83   if (nm->num_workers < 2)
  84     {
  85       rv = VNET_API_ERROR_FEATURE_DISABLED;
  86       goto send_reply;
  87     }
  88
  89   bitmap = clib_bitmap_set_multiple (bitmap, 0, mask, BITS (mask));
  90   rv = nat44_ei_set_workers (bitmap);
  91   clib_bitmap_free (bitmap);
  92
  93 send_reply:
  94   REPLY_MACRO (VL_API_NAT44_EI_SET_WORKERS_REPLY);
  95 }
  96
  97 static void
  98 send_nat_worker_details (u32 worker_index, vl_api_registration_t *reg,
  99                          u32 context)
 100 {
 101   vl_api_nat44_ei_worker_details_t *rmp;
 102   nat44_ei_main_t *nm = &nat44_ei_main;
 103   vlib_worker_thread_t *w =
 104     vlib_worker_threads + worker_index + nm->first_worker_index;
 105
 106   rmp = vl_msg_api_alloc (sizeof (*rmp));
 107   clib_memset (rmp, 0, sizeof (*rmp));
 108   rmp->_vl_msg_id = ntohs (VL_API_NAT44_EI_WORKER_DETAILS + nm->msg_id_base);
 109   rmp->context = context;
 110   rmp->worker_index = htonl (worker_index);
 111   rmp->lcore_id = htonl (w->cpu_id);
 112   strncpy ((char *) rmp->name, (char *) w->name, ARRAY_LEN (rmp->name) - 1);
 113
 114   vl_api_send_msg (reg, (u8 *) rmp);
 115 }
 116
 117 static void
 118 vl_api_nat44_ei_worker_dump_t_handler (vl_api_nat44_ei_worker_dump_t *mp)
 119 {
 120   vl_api_registration_t *reg;
 121   nat44_ei_main_t *nm = &nat44_ei_main;
 122   u32 *worker_index;
 123
 124   reg = vl_api_client_index_to_registration (mp->client_index);
 125   if (!reg)
 126     return;
 127
 128   vec_foreach (worker_index, nm->workers)
 129     {
 130       send_nat_worker_details (*worker_index, reg, mp->context);
 131     }
 132 }
 133
 134 static void
 135 vl_api_nat44_ei_set_log_level_t_handler (vl_api_nat44_ei_set_log_level_t *mp)
 136 {
 137   nat44_ei_main_t *nm = &nat44_ei_main;
 138   vl_api_nat44_ei_set_log_level_reply_t *rmp;
 139   int rv = 0;
 140
 141   if (nm->log_level > NAT_LOG_DEBUG)
 142     rv = VNET_API_ERROR_UNSUPPORTED;
 143   else
 144     nm->log_level = mp->log_level;
 145
 146   REPLY_MACRO (VL_API_NAT44_EI_SET_LOG_LEVEL_REPLY);
 147 }
 148
 149 static void
 150 vl_api_nat44_ei_plugin_enable_disable_t_handler (
 151   vl_api_nat44_ei_plugin_enable_disable_t *mp)
 152 {
 153   nat44_ei_main_t *nm = &nat44_ei_main;
 154   nat44_ei_config_t c = { 0 };
 155   vl_api_nat44_ei_plugin_enable_disable_reply_t *rmp;
 156   int rv = 0;
 157
 158   if (mp->enable)
 159     {
 160       c.static_mapping_only = mp->flags & NAT44_EI_STATIC_MAPPING_ONLY;
 161       c.connection_tracking = mp->flags & NAT44_EI_CONNECTION_TRACKING;
 162       c.out2in_dpo = mp->flags & NAT44_EI_OUT2IN_DPO;
 163
 164       c.inside_vrf = ntohl (mp->inside_vrf);
 165       c.outside_vrf = ntohl (mp->outside_vrf);
 166
 167       c.users = ntohl (mp->users);
 168
 169       c.sessions = ntohl (mp->sessions);
 170
 171       c.user_sessions = ntohl (mp->user_sessions);
 172
 173       rv = nat44_ei_plugin_enable (c);
 174     }
 175   else
 176     rv = nat44_ei_plugin_disable ();
 177
 178   REPLY_MACRO (VL_API_NAT44_EI_PLUGIN_ENABLE_DISABLE_REPLY);
 179 }
 180
 181 static void
 182 vl_api_nat44_ei_ipfix_enable_disable_t_handler (
 183   vl_api_nat44_ei_ipfix_enable_disable_t *mp)
 184 {
 185   nat44_ei_main_t *nm = &nat44_ei_main;
 186   vl_api_nat44_ei_ipfix_enable_disable_reply_t *rmp;
 187   int rv = 0;
 188
 189   rv = nat_ipfix_logging_enable_disable (mp->enable,
 190                                          clib_host_to_net_u32 (mp->domain_id),
 191                                          clib_host_to_net_u16 (mp->src_port));
 192
 193   REPLY_MACRO (VL_API_NAT44_EI_IPFIX_ENABLE_DISABLE_REPLY);
 194 }
 195
 196 static void
 197 vl_api_nat44_ei_set_timeouts_t_handler (vl_api_nat44_ei_set_timeouts_t *mp)
 198 {
 199   nat44_ei_main_t *nm = &nat44_ei_main;
 200   vl_api_nat44_ei_set_timeouts_reply_t *rmp;
 201   int rv = 0;
 202
 203   nm->timeouts.udp = ntohl (mp->udp);
 204   nm->timeouts.tcp.established = ntohl (mp->tcp_established);
 205   nm->timeouts.tcp.transitory = ntohl (mp->tcp_transitory);
 206   nm->timeouts.icmp = ntohl (mp->icmp);
 207
 208   REPLY_MACRO (VL_API_NAT44_EI_SET_TIMEOUTS_REPLY);
 209 }
 210
 211 static void
 212 vl_api_nat44_ei_set_addr_and_port_alloc_alg_t_handler (
 213   vl_api_nat44_ei_set_addr_and_port_alloc_alg_t *mp)
 214 {
 215   nat44_ei_main_t *nm = &nat44_ei_main;
 216   vl_api_nat44_ei_set_addr_and_port_alloc_alg_reply_t *rmp;
 217   int rv = 0;
 218   u16 port_start, port_end;
 219
 220   switch (mp->alg)
 221     {
 222     case NAT44_EI_ADDR_AND_PORT_ALLOC_ALG_DEFAULT:
 223       nat44_ei_set_alloc_default ();
 224       break;
 225     case NAT44_EI_ADDR_AND_PORT_ALLOC_ALG_MAPE:
 226       nat44_ei_set_alloc_mape (ntohs (mp->psid), mp->psid_offset,
 227                                mp->psid_length);
 228       break;
 229     case NAT44_EI_ADDR_AND_PORT_ALLOC_ALG_RANGE:
 230       port_start = ntohs (mp->start_port);
 231       port_end = ntohs (mp->end_port);
 232       if (port_end <= port_start)
 233         {
 234           rv = VNET_API_ERROR_INVALID_VALUE;
 235           goto send_reply;
 236         }
 237       nat44_ei_set_alloc_range (port_start, port_end);
 238       break;
 239     default:
 240       rv = VNET_API_ERROR_INVALID_VALUE;
 241       break;
 242     }
 243
 244 send_reply:
 245   REPLY_MACRO (VL_API_NAT44_EI_SET_ADDR_AND_PORT_ALLOC_ALG_REPLY);
 246 }
 247
 248 static void
 249 vl_api_nat44_ei_get_addr_and_port_alloc_alg_t_handler (
 250   vl_api_nat44_ei_get_addr_and_port_alloc_alg_t *mp)
 251 {
 252   nat44_ei_main_t *nm = &nat44_ei_main;
 253   vl_api_nat44_ei_get_addr_and_port_alloc_alg_reply_t *rmp;
 254   int rv = 0;
 255
 256   REPLY_MACRO2 (VL_API_NAT44_EI_GET_ADDR_AND_PORT_ALLOC_ALG_REPLY, ({
 257                   rmp->alg = nm->addr_and_port_alloc_alg;
 258                   rmp->psid_offset = nm->psid_offset;
 259                   rmp->psid_length = nm->psid_length;
 260                   rmp->psid = htons (nm->psid);
 261                   rmp->start_port = htons (nm->start_port);
 262                   rmp->end_port = htons (nm->end_port);
 263                 }))
 264 }
 265
 266 static void
 267 vl_api_nat44_ei_set_mss_clamping_t_handler (
 268   vl_api_nat44_ei_set_mss_clamping_t *mp)
 269 {
 270   nat44_ei_main_t *nm = &nat44_ei_main;
 271   vl_api_nat44_ei_set_mss_clamping_reply_t *rmp;
 272   int rv = 0;
 273
 274   if (mp->enable)
 275     nm->mss_clamping = ntohs (mp->mss_value);
 276   else
 277     nm->mss_clamping = 0;
 278
 279   REPLY_MACRO (VL_API_NAT44_EI_SET_MSS_CLAMPING_REPLY);
 280 }
 281
 282 static void
 283 vl_api_nat44_ei_get_mss_clamping_t_handler (
 284   vl_api_nat44_ei_get_mss_clamping_t *mp)
 285 {
 286   nat44_ei_main_t *nm = &nat44_ei_main;
 287   vl_api_nat44_ei_get_mss_clamping_reply_t *rmp;
 288   int rv = 0;
 289
 290   REPLY_MACRO2 (VL_API_NAT44_EI_GET_MSS_CLAMPING_REPLY, ({
 291                   rmp->enable = nm->mss_clamping ? 1 : 0;
 292                   rmp->mss_value = htons (nm->mss_clamping);
 293                 }))
 294 }
 295
 296 static void
 297 vl_api_nat44_ei_ha_set_listener_t_handler (
 298   vl_api_nat44_ei_ha_set_listener_t *mp)
 299 {
 300   nat44_ei_main_t *nm = &nat44_ei_main;
 301   vl_api_nat44_ei_ha_set_listener_reply_t *rmp;
 302   ip4_address_t addr;
 303   int rv;
 304
 305   memcpy (&addr, &mp->ip_address, sizeof (addr));
 306   rv = nat_ha_set_listener (vlib_get_main (), &addr,
 307                             clib_net_to_host_u16 (mp->port),
 308                             clib_net_to_host_u32 (mp->path_mtu));
 309
 310   REPLY_MACRO (VL_API_NAT44_EI_HA_SET_LISTENER_REPLY);
 311 }
 312
 313 static void
 314 vl_api_nat44_ei_ha_get_listener_t_handler (
 315   vl_api_nat44_ei_ha_get_listener_t *mp)
 316 {
 317   nat44_ei_main_t *nm = &nat44_ei_main;
 318   vl_api_nat44_ei_ha_get_listener_reply_t *rmp;
 319   int rv = 0;
 320   ip4_address_t addr;
 321   u16 port;
 322   u32 path_mtu;
 323
 324   nat_ha_get_listener (&addr, &port, &path_mtu);
 325
 326   REPLY_MACRO2 (VL_API_NAT44_EI_HA_GET_LISTENER_REPLY, ({
 327                   clib_memcpy (rmp->ip_address, &addr, sizeof (ip4_address_t));
 328                   rmp->port = clib_host_to_net_u16 (port);
 329                   rmp->path_mtu = clib_host_to_net_u32 (path_mtu);
 330                 }))
 331 }
 332
 333 static void
 334 vl_api_nat44_ei_ha_set_failover_t_handler (
 335   vl_api_nat44_ei_ha_set_failover_t *mp)
 336 {
 337   nat44_ei_main_t *nm = &nat44_ei_main;
 338   vl_api_nat44_ei_ha_set_failover_reply_t *rmp;
 339   ip4_address_t addr;
 340   int rv;
 341
 342   memcpy (&addr, &mp->ip_address, sizeof (addr));
 343   rv = nat_ha_set_failover (
 344     vlib_get_main (), &addr, clib_net_to_host_u16 (mp->port),
 345     clib_net_to_host_u32 (mp->session_refresh_interval));
 346
 347   REPLY_MACRO (VL_API_NAT44_EI_HA_SET_FAILOVER_REPLY);
 348 }
 349
 350 static void
 351 vl_api_nat44_ei_ha_get_failover_t_handler (
 352   vl_api_nat44_ei_ha_get_failover_t *mp)
 353 {
 354   nat44_ei_main_t *nm = &nat44_ei_main;
 355   vl_api_nat44_ei_ha_get_failover_reply_t *rmp;
 356   int rv = 0;
 357   ip4_address_t addr;
 358   u16 port;
 359   u32 session_refresh_interval;
 360
 361   nat_ha_get_failover (&addr, &port, &session_refresh_interval);
 362
 363   REPLY_MACRO2 (VL_API_NAT44_EI_HA_GET_FAILOVER_REPLY, ({
 364                   clib_memcpy (rmp->ip_address, &addr, sizeof (ip4_address_t));
 365                   rmp->port = clib_host_to_net_u16 (port);
 366                   rmp->session_refresh_interval =
 367                     clib_host_to_net_u32 (session_refresh_interval);
 368                 }))
 369 }
 370
 371 static void
 372 vl_api_nat44_ei_ha_flush_t_handler (vl_api_nat44_ei_ha_flush_t *mp)
 373 {
 374   nat44_ei_main_t *nm = &nat44_ei_main;
 375   vl_api_nat44_ei_ha_flush_reply_t *rmp;
 376   int rv = 0;
 377
 378   nat_ha_flush (0);
 379
 380   REPLY_MACRO (VL_API_NAT44_EI_HA_FLUSH_REPLY);
 381 }
 382
 383 static void
 384 nat_ha_resync_completed_event_cb (u32 client_index, u32 pid, u32 missed_count)
 385 {
 386   nat44_ei_main_t *nm = &nat44_ei_main;
 387   vl_api_registration_t *reg;
 388   vl_api_nat44_ei_ha_resync_completed_event_t *mp;
 389
 390   reg = vl_api_client_index_to_registration (client_index);
 391   if (!reg)
 392     return;
 393
 394   mp = vl_msg_api_alloc (sizeof (*mp));
 395   clib_memset (mp, 0, sizeof (*mp));
 396   mp->client_index = client_index;
 397   mp->pid = pid;
 398   mp->missed_count = clib_host_to_net_u32 (missed_count);
 399   mp->_vl_msg_id =
 400     ntohs (VL_API_NAT44_EI_HA_RESYNC_COMPLETED_EVENT + nm->msg_id_base);
 401
 402   vl_api_send_msg (reg, (u8 *) mp);
 403 }
 404
 405 static void
 406 vl_api_nat44_ei_ha_resync_t_handler (vl_api_nat44_ei_ha_resync_t *mp)
 407 {
 408   nat44_ei_main_t *nm = &nat44_ei_main;
 409   vl_api_nat44_ei_ha_resync_reply_t *rmp;
 410   int rv;
 411
 412   rv = nat_ha_resync (
 413     mp->client_index, mp->pid,
 414     mp->want_resync_event ? nat_ha_resync_completed_event_cb : NULL);
 415
 416   REPLY_MACRO (VL_API_NAT44_EI_HA_RESYNC_REPLY);
 417 }
 418
 419 static void
 420 vl_api_nat44_ei_del_user_t_handler (vl_api_nat44_ei_del_user_t *mp)
 421 {
 422   nat44_ei_main_t *nm = &nat44_ei_main;
 423   vl_api_nat44_ei_del_user_reply_t *rmp;
 424   ip4_address_t addr;
 425   int rv;
 426   memcpy (&addr.as_u8, mp->ip_address, 4);
 427   rv = nat44_ei_user_del (&addr, ntohl (mp->fib_index));
 428   REPLY_MACRO (VL_API_NAT44_EI_DEL_USER_REPLY);
 429 }
 430
 431 static void
 432 vl_api_nat44_ei_add_del_address_range_t_handler (
 433   vl_api_nat44_ei_add_del_address_range_t *mp)
 434 {
 435   nat44_ei_main_t *nm = &nat44_ei_main;
 436   vl_api_nat44_ei_add_del_address_range_reply_t *rmp;
 437   ip4_address_t this_addr;
 438   u8 is_add;
 439   u32 start_host_order, end_host_order;
 440   u32 vrf_id;
 441   int i, count;
 442   int rv = 0;
 443   u32 *tmp;
 444
 445   if (nm->static_mapping_only)
 446     {
 447       rv = VNET_API_ERROR_FEATURE_DISABLED;
 448       goto send_reply;
 449     }
 450
 451   is_add = mp->is_add;
 452
 453   tmp = (u32 *) mp->first_ip_address;
 454   start_host_order = clib_host_to_net_u32 (tmp[0]);
 455   tmp = (u32 *) mp->last_ip_address;
 456   end_host_order = clib_host_to_net_u32 (tmp[0]);
 457
 458   count = (end_host_order - start_host_order) + 1;
 459
 460   vrf_id = clib_host_to_net_u32 (mp->vrf_id);
 461
 462   if (count > 1024)
 463     nat44_ei_log_info ("%U - %U, %d addresses...", format_ip4_address,
 464                        mp->first_ip_address, format_ip4_address,
 465                        mp->last_ip_address, count);
 466
 467   memcpy (&this_addr.as_u8, mp->first_ip_address, 4);
 468
 469   for (i = 0; i < count; i++)
 470     {
 471       if (is_add)
 472         rv = nat44_ei_add_address (nm, &this_addr, vrf_id);
 473       else
 474         rv = nat44_ei_del_address (nm, this_addr, 0);
 475
 476       if (rv)
 477         goto send_reply;
 478
 479       if (nm->out2in_dpo)
 480         nat44_ei_add_del_address_dpo (this_addr, is_add);
 481
 482       increment_v4_address (&this_addr);
 483     }
 484
 485 send_reply:
 486   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_ADDRESS_RANGE_REPLY);
 487 }
 488
 489 static void
 490 send_nat44_ei_address_details (nat44_ei_address_t *a,
 491                                vl_api_registration_t *reg, u32 context)
 492 {
 493   vl_api_nat44_ei_address_details_t *rmp;
 494   nat44_ei_main_t *nm = &nat44_ei_main;
 495
 496   rmp = vl_msg_api_alloc (sizeof (*rmp));
 497   clib_memset (rmp, 0, sizeof (*rmp));
 498   rmp->_vl_msg_id = ntohs (VL_API_NAT44_EI_ADDRESS_DETAILS + nm->msg_id_base);
 499   clib_memcpy (rmp->ip_address, &(a->addr), 4);
 500   if (a->fib_index != ~0)
 501     {
 502       fib_table_t *fib = fib_table_get (a->fib_index, FIB_PROTOCOL_IP4);
 503       rmp->vrf_id = ntohl (fib->ft_table_id);
 504     }
 505   else
 506     rmp->vrf_id = ~0;
 507   rmp->context = context;
 508
 509   vl_api_send_msg (reg, (u8 *) rmp);
 510 }
 511
 512 static void
 513 vl_api_nat44_ei_address_dump_t_handler (vl_api_nat44_ei_address_dump_t *mp)
 514 {
 515   vl_api_registration_t *reg;
 516   nat44_ei_main_t *nm = &nat44_ei_main;
 517   nat44_ei_address_t *a;
 518
 519   reg = vl_api_client_index_to_registration (mp->client_index);
 520   if (!reg)
 521     return;
 522
 523   vec_foreach (a, nm->addresses)
 524     {
 525       send_nat44_ei_address_details (a, reg, mp->context);
 526     }
 527 }
 528
 529 static void
 530 vl_api_nat44_ei_interface_add_del_feature_t_handler (
 531   vl_api_nat44_ei_interface_add_del_feature_t *mp)
 532 {
 533   nat44_ei_main_t *nm = &nat44_ei_main;
 534   vl_api_nat44_ei_interface_add_del_feature_reply_t *rmp;
 535   u32 sw_if_index = ntohl (mp->sw_if_index);
 536   u8 is_del;
 537   int rv = 0;
 538
 539   is_del = !mp->is_add;
 540
 541   VALIDATE_SW_IF_INDEX (mp);
 542
 543   rv = nat44_ei_interface_add_del (sw_if_index, mp->flags & NAT44_EI_IF_INSIDE,
 544                                    is_del);
 545
 546   BAD_SW_IF_INDEX_LABEL;
 547
 548   REPLY_MACRO (VL_API_NAT44_EI_INTERFACE_ADD_DEL_FEATURE_REPLY);
 549 }
 550
 551 static void
 552 send_nat44_ei_interface_details (nat44_ei_interface_t *i,
 553                                  vl_api_registration_t *reg, u32 context)
 554 {
 555   vl_api_nat44_ei_interface_details_t *rmp;
 556   nat44_ei_main_t *nm = &nat44_ei_main;
 557
 558   rmp = vl_msg_api_alloc (sizeof (*rmp));
 559   clib_memset (rmp, 0, sizeof (*rmp));
 560   rmp->_vl_msg_id =
 561     ntohs (VL_API_NAT44_EI_INTERFACE_DETAILS + nm->msg_id_base);
 562   rmp->sw_if_index = ntohl (i->sw_if_index);
 563
 564   if (nat44_ei_interface_is_inside (i))
 565     rmp->flags |= NAT44_EI_IF_INSIDE;
 566   if (nat44_ei_interface_is_outside (i))
 567     rmp->flags |= NAT44_EI_IF_OUTSIDE;
 568
 569   rmp->context = context;
 570
 571   vl_api_send_msg (reg, (u8 *) rmp);
 572 }
 573
 574 static void
 575 vl_api_nat44_ei_interface_dump_t_handler (vl_api_nat44_ei_interface_dump_t *mp)
 576 {
 577   vl_api_registration_t *reg;
 578   nat44_ei_main_t *nm = &nat44_ei_main;
 579   nat44_ei_interface_t *i;
 580
 581   reg = vl_api_client_index_to_registration (mp->client_index);
 582   if (!reg)
 583     return;
 584
 585   pool_foreach (i, nm->interfaces)
 586     {
 587       send_nat44_ei_interface_details (i, reg, mp->context);
 588     }
 589 }
 590
 591 static void
 592 vl_api_nat44_ei_interface_add_del_output_feature_t_handler (
 593   vl_api_nat44_ei_interface_add_del_output_feature_t *mp)
 594 {
 595   nat44_ei_main_t *nm = &nat44_ei_main;
 596   vl_api_nat44_ei_interface_add_del_output_feature_reply_t *rmp;
 597   u32 sw_if_index = ntohl (mp->sw_if_index);
 598   int rv = 0;
 599
 600   VALIDATE_SW_IF_INDEX (mp);
 601
 602   rv = nat44_ei_interface_add_del_output_feature (
 603     sw_if_index, mp->flags & NAT44_EI_IF_INSIDE, !mp->is_add);
 604
 605   BAD_SW_IF_INDEX_LABEL;
 606   REPLY_MACRO (VL_API_NAT44_EI_INTERFACE_ADD_DEL_OUTPUT_FEATURE_REPLY);
 607 }
 608
 609 static void
 610 send_nat44_ei_interface_output_feature_details (nat44_ei_interface_t *i,
 611                                                 vl_api_registration_t *reg,
 612                                                 u32 context)
 613 {
 614   vl_api_nat44_ei_interface_output_feature_details_t *rmp;
 615   nat44_ei_main_t *nm = &nat44_ei_main;
 616
 617   rmp = vl_msg_api_alloc (sizeof (*rmp));
 618   clib_memset (rmp, 0, sizeof (*rmp));
 619   rmp->_vl_msg_id =
 620     ntohs (VL_API_NAT44_EI_INTERFACE_OUTPUT_FEATURE_DETAILS + nm->msg_id_base);
 621   rmp->sw_if_index = ntohl (i->sw_if_index);
 622   rmp->context = context;
 623
 624   if (nat44_ei_interface_is_inside (i))
 625     rmp->flags |= NAT44_EI_IF_INSIDE;
 626
 627   vl_api_send_msg (reg, (u8 *) rmp);
 628 }
 629
 630 static void
 631 vl_api_nat44_ei_interface_output_feature_dump_t_handler (
 632   vl_api_nat44_ei_interface_output_feature_dump_t *mp)
 633 {
 634   vl_api_registration_t *reg;
 635   nat44_ei_main_t *nm = &nat44_ei_main;
 636   nat44_ei_interface_t *i;
 637
 638   reg = vl_api_client_index_to_registration (mp->client_index);
 639   if (!reg)
 640     return;
 641
 642   pool_foreach (i, nm->output_feature_interfaces)
 643     {
 644       send_nat44_ei_interface_output_feature_details (i, reg, mp->context);
 645     }
 646 }
 647
 648 static void
 649 vl_api_nat44_ei_add_del_static_mapping_t_handler (
 650   vl_api_nat44_ei_add_del_static_mapping_t *mp)
 651 {
 652   nat44_ei_main_t *nm = &nat44_ei_main;
 653   vl_api_nat44_ei_add_del_static_mapping_reply_t *rmp;
 654   ip4_address_t local_addr, external_addr;
 655   u16 local_port = 0, external_port = 0;
 656   u32 vrf_id, external_sw_if_index;
 657   int rv = 0;
 658   nat_protocol_t proto;
 659   u8 *tag = 0;
 660
 661   memcpy (&local_addr.as_u8, mp->local_ip_address, 4);
 662   memcpy (&external_addr.as_u8, mp->external_ip_address, 4);
 663
 664   if (!(mp->flags & NAT44_EI_ADDR_ONLY_MAPPING))
 665     {
 666       local_port = mp->local_port;
 667       external_port = mp->external_port;
 668     }
 669
 670   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
 671   external_sw_if_index = clib_net_to_host_u32 (mp->external_sw_if_index);
 672   proto = ip_proto_to_nat_proto (mp->protocol);
 673
 674   mp->tag[sizeof (mp->tag) - 1] = 0;
 675   tag = format (0, "%s", mp->tag);
 676   vec_terminate_c_string (tag);
 677
 678   rv = nat44_ei_add_del_static_mapping (
 679     local_addr, external_addr, local_port, external_port, proto,
 680     external_sw_if_index, vrf_id, mp->flags & NAT44_EI_ADDR_ONLY_MAPPING, 0,
 681     tag, mp->is_add);
 682
 683   vec_free (tag);
 684
 685   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_STATIC_MAPPING_REPLY);
 686 }
 687
 688 static void
 689 send_nat44_ei_static_mapping_details (nat44_ei_static_mapping_t *m,
 690                                       vl_api_registration_t *reg, u32 context)
 691 {
 692   vl_api_nat44_ei_static_mapping_details_t *rmp;
 693   nat44_ei_main_t *nm = &nat44_ei_main;
 694   u32 len = sizeof (*rmp);
 695
 696   rmp = vl_msg_api_alloc (len);
 697   clib_memset (rmp, 0, len);
 698   rmp->_vl_msg_id =
 699     ntohs (VL_API_NAT44_EI_STATIC_MAPPING_DETAILS + nm->msg_id_base);
 700
 701   clib_memcpy (rmp->local_ip_address, &(m->local_addr), 4);
 702   clib_memcpy (rmp->external_ip_address, &(m->external_addr), 4);
 703   rmp->external_sw_if_index = ~0;
 704   rmp->vrf_id = htonl (m->vrf_id);
 705   rmp->context = context;
 706
 707   if (nat44_ei_is_addr_only_static_mapping (m))
 708     {
 709       rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 710     }
 711   else
 712     {
 713       rmp->protocol = nat_proto_to_ip_proto (m->proto);
 714       rmp->external_port = m->external_port;
 715       rmp->local_port = m->local_port;
 716     }
 717
 718   if (m->tag)
 719     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 720
 721   vl_api_send_msg (reg, (u8 *) rmp);
 722 }
 723
 724 static void
 725 send_nat44_ei_static_map_resolve_details (nat44_ei_static_map_resolve_t *m,
 726                                           vl_api_registration_t *reg,
 727                                           u32 context)
 728 {
 729   vl_api_nat44_ei_static_mapping_details_t *rmp;
 730   nat44_ei_main_t *nm = &nat44_ei_main;
 731
 732   rmp = vl_msg_api_alloc (sizeof (*rmp));
 733   clib_memset (rmp, 0, sizeof (*rmp));
 734   rmp->_vl_msg_id =
 735     ntohs (VL_API_NAT44_EI_STATIC_MAPPING_DETAILS + nm->msg_id_base);
 736   clib_memcpy (rmp->local_ip_address, &(m->l_addr), 4);
 737   rmp->external_sw_if_index = htonl (m->sw_if_index);
 738   rmp->vrf_id = htonl (m->vrf_id);
 739   rmp->context = context;
 740
 741   if (m->addr_only)
 742     {
 743       rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 744     }
 745   else
 746     {
 747       rmp->protocol = nat_proto_to_ip_proto (m->proto);
 748       rmp->external_port = m->e_port;
 749       rmp->local_port = m->l_port;
 750     }
 751   if (m->tag)
 752     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 753
 754   vl_api_send_msg (reg, (u8 *) rmp);
 755 }
 756
 757 static void
 758 vl_api_nat44_ei_static_mapping_dump_t_handler (
 759   vl_api_nat44_ei_static_mapping_dump_t *mp)
 760 {
 761   vl_api_registration_t *reg;
 762   nat44_ei_main_t *nm = &nat44_ei_main;
 763   nat44_ei_static_mapping_t *m;
 764   nat44_ei_static_map_resolve_t *rp;
 765   int j;
 766
 767   reg = vl_api_client_index_to_registration (mp->client_index);
 768   if (!reg)
 769     return;
 770
 771   pool_foreach (m, nm->static_mappings)
 772     {
 773       if (!nat44_ei_is_identity_static_mapping (m))
 774         send_nat44_ei_static_mapping_details (m, reg, mp->context);
 775     }
 776
 777   for (j = 0; j < vec_len (nm->to_resolve); j++)
 778     {
 779       rp = nm->to_resolve + j;
 780       if (!rp->identity_nat)
 781         send_nat44_ei_static_map_resolve_details (rp, reg, mp->context);
 782     }
 783 }
 784
 785 static void
 786 vl_api_nat44_ei_add_del_identity_mapping_t_handler (
 787   vl_api_nat44_ei_add_del_identity_mapping_t *mp)
 788 {
 789   nat44_ei_main_t *nm = &nat44_ei_main;
 790   vl_api_nat44_ei_add_del_identity_mapping_reply_t *rmp;
 791   ip4_address_t addr;
 792   u16 port = 0;
 793   u32 vrf_id, sw_if_index;
 794   int rv = 0;
 795   nat_protocol_t proto = NAT_PROTOCOL_OTHER;
 796   u8 *tag = 0;
 797
 798   if (!(mp->flags & NAT44_EI_ADDR_ONLY_MAPPING))
 799     {
 800       port = mp->port;
 801       proto = ip_proto_to_nat_proto (mp->protocol);
 802     }
 803   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
 804   sw_if_index = clib_net_to_host_u32 (mp->sw_if_index);
 805   if (sw_if_index != ~0)
 806     addr.as_u32 = 0;
 807   else
 808     memcpy (&addr.as_u8, mp->ip_address, 4);
 809   mp->tag[sizeof (mp->tag) - 1] = 0;
 810   tag = format (0, "%s", mp->tag);
 811   vec_terminate_c_string (tag);
 812
 813   rv = nat44_ei_add_del_static_mapping (
 814     addr, addr, port, port, proto, sw_if_index, vrf_id,
 815     mp->flags & NAT44_EI_ADDR_ONLY_MAPPING, 1, tag, mp->is_add);
 816
 817   vec_free (tag);
 818
 819   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_IDENTITY_MAPPING_REPLY);
 820 }
 821
 822 static void
 823 send_nat44_ei_identity_mapping_details (nat44_ei_static_mapping_t *m,
 824                                         int index, vl_api_registration_t *reg,
 825                                         u32 context)
 826 {
 827   vl_api_nat44_ei_identity_mapping_details_t *rmp;
 828   nat44_ei_main_t *nm = &nat44_ei_main;
 829   nat44_ei_lb_addr_port_t *local = pool_elt_at_index (m->locals, index);
 830
 831   rmp = vl_msg_api_alloc (sizeof (*rmp));
 832   clib_memset (rmp, 0, sizeof (*rmp));
 833   rmp->_vl_msg_id =
 834     ntohs (VL_API_NAT44_EI_IDENTITY_MAPPING_DETAILS + nm->msg_id_base);
 835
 836   if (nat44_ei_is_addr_only_static_mapping (m))
 837     rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 838
 839   clib_memcpy (rmp->ip_address, &(m->local_addr), 4);
 840   rmp->port = m->local_port;
 841   rmp->sw_if_index = ~0;
 842   rmp->vrf_id = htonl (local->vrf_id);
 843   rmp->protocol = nat_proto_to_ip_proto (m->proto);
 844   rmp->context = context;
 845   if (m->tag)
 846     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 847
 848   vl_api_send_msg (reg, (u8 *) rmp);
 849 }
 850
 851 static void
 852 send_nat44_ei_identity_map_resolve_details (nat44_ei_static_map_resolve_t *m,
 853                                             vl_api_registration_t *reg,
 854                                             u32 context)
 855 {
 856   vl_api_nat44_ei_identity_mapping_details_t *rmp;
 857   nat44_ei_main_t *nm = &nat44_ei_main;
 858   rmp = vl_msg_api_alloc (sizeof (*rmp));
 859   clib_memset (rmp, 0, sizeof (*rmp));
 860   rmp->_vl_msg_id =
 861     ntohs (VL_API_NAT44_EI_IDENTITY_MAPPING_DETAILS + nm->msg_id_base);
 862
 863   if (m->addr_only)
 864     rmp->flags = (vl_api_nat44_ei_config_flags_t) NAT44_EI_ADDR_ONLY_MAPPING;
 865
 866   rmp->port = m->l_port;
 867   rmp->sw_if_index = htonl (m->sw_if_index);
 868   rmp->vrf_id = htonl (m->vrf_id);
 869   rmp->protocol = nat_proto_to_ip_proto (m->proto);
 870   rmp->context = context;
 871   if (m->tag)
 872     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 873
 874   vl_api_send_msg (reg, (u8 *) rmp);
 875 }
 876
 877 static void
 878 vl_api_nat44_ei_identity_mapping_dump_t_handler (
 879   vl_api_nat44_ei_identity_mapping_dump_t *mp)
 880 {
 881   vl_api_registration_t *reg;
 882   nat44_ei_main_t *nm = &nat44_ei_main;
 883   nat44_ei_static_mapping_t *m;
 884   nat44_ei_static_map_resolve_t *rp;
 885   int j;
 886
 887   reg = vl_api_client_index_to_registration (mp->client_index);
 888   if (!reg)
 889     return;
 890
 891   pool_foreach (m, nm->static_mappings)
 892     {
 893       if (nat44_ei_is_identity_static_mapping (m))
 894         {
 895           pool_foreach_index (j, m->locals)
 896             {
 897               send_nat44_ei_identity_mapping_details (m, j, reg, mp->context);
 898             }
 899         }
 900     }
 901
 902   for (j = 0; j < vec_len (nm->to_resolve); j++)
 903     {
 904       rp = nm->to_resolve + j;
 905       if (rp->identity_nat)
 906         send_nat44_ei_identity_map_resolve_details (rp, reg, mp->context);
 907     }
 908 }
 909
 910 static void
 911 vl_api_nat44_ei_add_del_interface_addr_t_handler (
 912   vl_api_nat44_ei_add_del_interface_addr_t *mp)
 913 {
 914   nat44_ei_main_t *nm = &nat44_ei_main;
 915   vl_api_nat44_ei_add_del_interface_addr_reply_t *rmp;
 916   u32 sw_if_index = ntohl (mp->sw_if_index);
 917   int rv = 0;
 918   u8 is_del;
 919
 920   is_del = !mp->is_add;
 921
 922   VALIDATE_SW_IF_INDEX (mp);
 923
 924   rv = nat44_ei_add_interface_address (nm, sw_if_index, is_del);
 925
 926   BAD_SW_IF_INDEX_LABEL;
 927   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_INTERFACE_ADDR_REPLY);
 928 }
 929
 930 static void
 931 send_nat44_ei_interface_addr_details (u32 sw_if_index,
 932                                       vl_api_registration_t *reg, u32 context)
 933 {
 934   vl_api_nat44_ei_interface_addr_details_t *rmp;
 935   nat44_ei_main_t *nm = &nat44_ei_main;
 936
 937   rmp = vl_msg_api_alloc (sizeof (*rmp));
 938   clib_memset (rmp, 0, sizeof (*rmp));
 939   rmp->_vl_msg_id =
 940     ntohs (VL_API_NAT44_EI_INTERFACE_ADDR_DETAILS + nm->msg_id_base);
 941   rmp->sw_if_index = ntohl (sw_if_index);
 942   rmp->context = context;
 943
 944   vl_api_send_msg (reg, (u8 *) rmp);
 945 }
 946
 947 static void
 948 vl_api_nat44_ei_interface_addr_dump_t_handler (
 949   vl_api_nat44_ei_interface_addr_dump_t *mp)
 950 {
 951   vl_api_registration_t *reg;
 952   nat44_ei_main_t *nm = &nat44_ei_main;
 953   u32 *i;
 954
 955   reg = vl_api_client_index_to_registration (mp->client_index);
 956   if (!reg)
 957     return;
 958
 959   vec_foreach (i, nm->auto_add_sw_if_indices)
 960     send_nat44_ei_interface_addr_details (*i, reg, mp->context);
 961 }
 962
 963 static void
 964 send_nat44_ei_user_details (nat44_ei_user_t *u, vl_api_registration_t *reg,
 965                             u32 context)
 966 {
 967   vl_api_nat44_ei_user_details_t *rmp;
 968   nat44_ei_main_t *nm = &nat44_ei_main;
 969   ip4_main_t *im = &ip4_main;
 970
 971   rmp = vl_msg_api_alloc (sizeof (*rmp));
 972   clib_memset (rmp, 0, sizeof (*rmp));
 973   rmp->_vl_msg_id = ntohs (VL_API_NAT44_EI_USER_DETAILS + nm->msg_id_base);
 974
 975   if (!pool_is_free_index (im->fibs, u->fib_index))
 976     {
 977       fib_table_t *fib = fib_table_get (u->fib_index, FIB_PROTOCOL_IP4);
 978       rmp->vrf_id = ntohl (fib->ft_table_id);
 979     }
 980
 981   clib_memcpy (rmp->ip_address, &(u->addr), 4);
 982   rmp->nsessions = ntohl (u->nsessions);
 983   rmp->nstaticsessions = ntohl (u->nstaticsessions);
 984   rmp->context = context;
 985
 986   vl_api_send_msg (reg, (u8 *) rmp);
 987 }
 988
 989 static void
 990 vl_api_nat44_ei_user_dump_t_handler (vl_api_nat44_ei_user_dump_t *mp)
 991 {
 992   vl_api_registration_t *reg;
 993   nat44_ei_main_t *nm = &nat44_ei_main;
 994   nat44_ei_main_per_thread_data_t *tnm;
 995   nat44_ei_user_t *u;
 996
 997   reg = vl_api_client_index_to_registration (mp->client_index);
 998   if (!reg)
 999     return;
1000
1001   vec_foreach (tnm, nm->per_thread_data)
1002     {
1003       pool_foreach (u, tnm->users)
1004         {
1005           send_nat44_ei_user_details (u, reg, mp->context);
1006         }
1007     }
1008 }
1009
1010 static void
1011 send_nat44_ei_user_session_details (nat44_ei_session_t *s,
1012                                     vl_api_registration_t *reg, u32 context)
1013 {
1014   vl_api_nat44_ei_user_session_details_t *rmp;
1015   nat44_ei_main_t *nm = &nat44_ei_main;
1016
1017   rmp = vl_msg_api_alloc (sizeof (*rmp));
1018   clib_memset (rmp, 0, sizeof (*rmp));
1019   rmp->_vl_msg_id =
1020     ntohs (VL_API_NAT44_EI_USER_SESSION_DETAILS + nm->msg_id_base);
1021   clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
1022   clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
1023
1024   if (nat44_ei_is_session_static (s))
1025     rmp->flags |= NAT44_EI_STATIC_MAPPING;
1026
1027   rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
1028   rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
1029   rmp->total_pkts = ntohl (s->total_pkts);
1030   rmp->context = context;
1031   if (nat44_ei_is_unk_proto_session (s))
1032     {
1033       rmp->outside_port = 0;
1034       rmp->inside_port = 0;
1035       rmp->protocol = ntohs (s->in2out.port);
1036     }
1037   else
1038     {
1039       rmp->outside_port = s->out2in.port;
1040       rmp->inside_port = s->in2out.port;
1041       rmp->protocol = ntohs (nat_proto_to_ip_proto (s->nat_proto));
1042     }
1043   vl_api_send_msg (reg, (u8 *) rmp);
1044 }
1045
1046 static void
1047 vl_api_nat44_ei_user_session_dump_t_handler (
1048   vl_api_nat44_ei_user_session_dump_t *mp)
1049 {
1050   vl_api_registration_t *reg;
1051   nat44_ei_main_t *nm = &nat44_ei_main;
1052   nat44_ei_main_per_thread_data_t *tnm;
1053   nat44_ei_session_t *s;
1054   clib_bihash_kv_8_8_t key, value;
1055   nat44_ei_user_key_t ukey;
1056   nat44_ei_user_t *u;
1057   u32 session_index, head_index, elt_index;
1058   dlist_elt_t *head, *elt;
1059   ip4_header_t ip;
1060
1061   reg = vl_api_client_index_to_registration (mp->client_index);
1062   if (!reg)
1063     return;
1064
1065   clib_memcpy (&ukey.addr, mp->ip_address, 4);
1066   ip.src_address.as_u32 = ukey.addr.as_u32;
1067   ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
1068   key.key = ukey.as_u64;
1069   if (nm->num_workers > 1)
1070     tnm = vec_elt_at_index (
1071       nm->per_thread_data,
1072       nat44_ei_get_in2out_worker_index (&ip, ukey.fib_index, 0));
1073   else
1074     tnm = vec_elt_at_index (nm->per_thread_data, nm->num_workers);
1075
1076   if (clib_bihash_search_8_8 (&tnm->user_hash, &key, &value))
1077     return;
1078   u = pool_elt_at_index (tnm->users, value.value);
1079   if (!u->nsessions && !u->nstaticsessions)
1080     return;
1081
1082   head_index = u->sessions_per_user_list_head_index;
1083   head = pool_elt_at_index (tnm->list_pool, head_index);
1084   elt_index = head->next;
1085   elt = pool_elt_at_index (tnm->list_pool, elt_index);
1086   session_index = elt->value;
1087   while (session_index != ~0)
1088     {
1089       s = pool_elt_at_index (tnm->sessions, session_index);
1090
1091       send_nat44_ei_user_session_details (s, reg, mp->context);
1092
1093       elt_index = elt->next;
1094       elt = pool_elt_at_index (tnm->list_pool, elt_index);
1095       session_index = elt->value;
1096     }
1097 }
1098
1099 static void
1100 vl_api_nat44_ei_del_session_t_handler (vl_api_nat44_ei_del_session_t *mp)
1101 {
1102   nat44_ei_main_t *nm = &nat44_ei_main;
1103   vl_api_nat44_ei_del_session_reply_t *rmp;
1104   ip4_address_t addr, eh_addr;
1105   u16 port;
1106   u32 vrf_id;
1107   int rv = 0;
1108   u8 is_in;
1109   nat_protocol_t proto;
1110
1111   memcpy (&addr.as_u8, mp->address, 4);
1112   port = mp->port;
1113   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
1114   proto = ip_proto_to_nat_proto (mp->protocol);
1115   memcpy (&eh_addr.as_u8, mp->ext_host_address, 4);
1116
1117   // is session inside ?
1118   is_in = mp->flags & NAT44_EI_IF_INSIDE;
1119
1120   rv = nat44_ei_del_session (nm, &addr, port, proto, vrf_id, is_in);
1121
1122   REPLY_MACRO (VL_API_NAT44_EI_DEL_SESSION_REPLY);
1123 }
1124
1125 static void
1126 vl_api_nat44_ei_forwarding_enable_disable_t_handler (
1127   vl_api_nat44_ei_forwarding_enable_disable_t *mp)
1128 {
1129   nat44_ei_main_t *nm = &nat44_ei_main;
1130   vl_api_nat44_ei_forwarding_enable_disable_reply_t *rmp;
1131   int rv = 0;
1132   u32 *ses_to_be_removed = 0, *ses_index;
1133   nat44_ei_main_per_thread_data_t *tnm;
1134   nat44_ei_session_t *s;
1135
1136   nm->forwarding_enabled = mp->enable != 0;
1137
1138   if (mp->enable == 0)
1139     {
1140       vec_foreach (tnm, nm->per_thread_data)
1141         {
1142           vec_foreach (ses_index, ses_to_be_removed)
1143             {
1144               s = pool_elt_at_index (tnm->sessions, ses_index[0]);
1145               nat44_ei_free_session_data (nm, s, tnm - nm->per_thread_data, 0);
1146               nat44_ei_delete_session (nm, s, tnm - nm->per_thread_data);
1147             }
1148
1149           vec_free (ses_to_be_removed);
1150         }
1151     }
1152
1153   REPLY_MACRO (VL_API_NAT44_EI_FORWARDING_ENABLE_DISABLE_REPLY);
1154 }
1155
1156 static void
1157 vl_api_nat44_ei_set_fq_options_t_handler (vl_api_nat44_ei_set_fq_options_t *mp)
1158 {
1159   nat44_ei_main_t *nm = &nat44_ei_main;
1160   vl_api_nat44_ei_set_fq_options_reply_t *rmp;
1161   int rv = 0;
1162   u32 frame_queue_nelts = ntohl (mp->frame_queue_nelts);
1163   rv = nat44_ei_set_frame_queue_nelts (frame_queue_nelts);
1164   REPLY_MACRO (VL_API_NAT44_EI_SET_FQ_OPTIONS_REPLY);
1165 }
1166
1167 static void
1168 vl_api_nat44_ei_show_fq_options_t_handler (
1169   vl_api_nat44_ei_show_fq_options_t *mp)
1170 {
1171   nat44_ei_main_t *nm = &nat44_ei_main;
1172   vl_api_nat44_ei_show_fq_options_reply_t *rmp;
1173   int rv = 0;
1174   /* clang-format off */
1175   REPLY_MACRO2_ZERO (VL_API_NAT44_EI_SHOW_FQ_OPTIONS_REPLY,
1176   ({
1177     rmp->frame_queue_nelts = htonl (nm->frame_queue_nelts);
1178   }));
1179   /* clang-format on */
1180 }
1181
1182 /* API definitions */
1183 #include <vnet/format_fns.h>
1184 #include <nat/nat44-ei/nat44_ei.api.c>
1185
1186 /* Set up the API message handling tables */
1187 clib_error_t *
1188 nat44_ei_api_hookup (vlib_main_t *vm)
1189 {
1190   nat44_ei_main_t *nm = &nat44_ei_main;
1191   nm->msg_id_base = setup_message_id_table ();
1192   return 0;
1193 }
1194
1195 /*
1196  * fd.io coding-style-patch-verification: ON
1197  *
1198  * Local Variables:
1199  * eval: (c-set-style "gnu")
1200  * End:
1201  */