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 (&addr, clib_net_to_host_u16 (mp->port),
 307                             clib_net_to_host_u32 (mp->path_mtu));
 308
 309   REPLY_MACRO (VL_API_NAT44_EI_HA_SET_LISTENER_REPLY);
 310 }
 311
 312 static void
 313 vl_api_nat44_ei_ha_get_listener_t_handler (
 314   vl_api_nat44_ei_ha_get_listener_t *mp)
 315 {
 316   nat44_ei_main_t *nm = &nat44_ei_main;
 317   vl_api_nat44_ei_ha_get_listener_reply_t *rmp;
 318   int rv = 0;
 319   ip4_address_t addr;
 320   u16 port;
 321   u32 path_mtu;
 322
 323   nat_ha_get_listener (&addr, &port, &path_mtu);
 324
 325   REPLY_MACRO2 (VL_API_NAT44_EI_HA_GET_LISTENER_REPLY, ({
 326                   clib_memcpy (rmp->ip_address, &addr, sizeof (ip4_address_t));
 327                   rmp->port = clib_host_to_net_u16 (port);
 328                   rmp->path_mtu = clib_host_to_net_u32 (path_mtu);
 329                 }))
 330 }
 331
 332 static void
 333 vl_api_nat44_ei_ha_set_failover_t_handler (
 334   vl_api_nat44_ei_ha_set_failover_t *mp)
 335 {
 336   nat44_ei_main_t *nm = &nat44_ei_main;
 337   vl_api_nat44_ei_ha_set_failover_reply_t *rmp;
 338   ip4_address_t addr;
 339   int rv;
 340
 341   memcpy (&addr, &mp->ip_address, sizeof (addr));
 342   rv =
 343     nat_ha_set_failover (&addr, clib_net_to_host_u16 (mp->port),
 344                          clib_net_to_host_u32 (mp->session_refresh_interval));
 345
 346   REPLY_MACRO (VL_API_NAT44_EI_HA_SET_FAILOVER_REPLY);
 347 }
 348
 349 static void
 350 vl_api_nat44_ei_ha_get_failover_t_handler (
 351   vl_api_nat44_ei_ha_get_failover_t *mp)
 352 {
 353   nat44_ei_main_t *nm = &nat44_ei_main;
 354   vl_api_nat44_ei_ha_get_failover_reply_t *rmp;
 355   int rv = 0;
 356   ip4_address_t addr;
 357   u16 port;
 358   u32 session_refresh_interval;
 359
 360   nat_ha_get_failover (&addr, &port, &session_refresh_interval);
 361
 362   REPLY_MACRO2 (VL_API_NAT44_EI_HA_GET_FAILOVER_REPLY, ({
 363                   clib_memcpy (rmp->ip_address, &addr, sizeof (ip4_address_t));
 364                   rmp->port = clib_host_to_net_u16 (port);
 365                   rmp->session_refresh_interval =
 366                     clib_host_to_net_u32 (session_refresh_interval);
 367                 }))
 368 }
 369
 370 static void
 371 vl_api_nat44_ei_ha_flush_t_handler (vl_api_nat44_ei_ha_flush_t *mp)
 372 {
 373   nat44_ei_main_t *nm = &nat44_ei_main;
 374   vl_api_nat44_ei_ha_flush_reply_t *rmp;
 375   int rv = 0;
 376
 377   nat_ha_flush (0);
 378
 379   REPLY_MACRO (VL_API_NAT44_EI_HA_FLUSH_REPLY);
 380 }
 381
 382 static void
 383 nat_ha_resync_completed_event_cb (u32 client_index, u32 pid, u32 missed_count)
 384 {
 385   nat44_ei_main_t *nm = &nat44_ei_main;
 386   vl_api_registration_t *reg;
 387   vl_api_nat44_ei_ha_resync_completed_event_t *mp;
 388
 389   reg = vl_api_client_index_to_registration (client_index);
 390   if (!reg)
 391     return;
 392
 393   mp = vl_msg_api_alloc (sizeof (*mp));
 394   clib_memset (mp, 0, sizeof (*mp));
 395   mp->client_index = client_index;
 396   mp->pid = pid;
 397   mp->missed_count = clib_host_to_net_u32 (missed_count);
 398   mp->_vl_msg_id =
 399     ntohs (VL_API_NAT44_EI_HA_RESYNC_COMPLETED_EVENT + nm->msg_id_base);
 400
 401   vl_api_send_msg (reg, (u8 *) mp);
 402 }
 403
 404 static void
 405 vl_api_nat44_ei_ha_resync_t_handler (vl_api_nat44_ei_ha_resync_t *mp)
 406 {
 407   nat44_ei_main_t *nm = &nat44_ei_main;
 408   vl_api_nat44_ei_ha_resync_reply_t *rmp;
 409   int rv;
 410
 411   rv = nat_ha_resync (
 412     mp->client_index, mp->pid,
 413     mp->want_resync_event ? nat_ha_resync_completed_event_cb : NULL);
 414
 415   REPLY_MACRO (VL_API_NAT44_EI_HA_RESYNC_REPLY);
 416 }
 417
 418 static void
 419 vl_api_nat44_ei_del_user_t_handler (vl_api_nat44_ei_del_user_t *mp)
 420 {
 421   nat44_ei_main_t *nm = &nat44_ei_main;
 422   vl_api_nat44_ei_del_user_reply_t *rmp;
 423   ip4_address_t addr;
 424   int rv;
 425   memcpy (&addr.as_u8, mp->ip_address, 4);
 426   rv = nat44_ei_user_del (&addr, ntohl (mp->fib_index));
 427   REPLY_MACRO (VL_API_NAT44_EI_DEL_USER_REPLY);
 428 }
 429
 430 static void
 431 vl_api_nat44_ei_add_del_address_range_t_handler (
 432   vl_api_nat44_ei_add_del_address_range_t *mp)
 433 {
 434   nat44_ei_main_t *nm = &nat44_ei_main;
 435   vl_api_nat44_ei_add_del_address_range_reply_t *rmp;
 436   ip4_address_t this_addr;
 437   u8 is_add;
 438   u32 start_host_order, end_host_order;
 439   u32 vrf_id;
 440   int i, count;
 441   int rv = 0;
 442   u32 *tmp;
 443
 444   if (nm->static_mapping_only)
 445     {
 446       rv = VNET_API_ERROR_FEATURE_DISABLED;
 447       goto send_reply;
 448     }
 449
 450   is_add = mp->is_add;
 451
 452   tmp = (u32 *) mp->first_ip_address;
 453   start_host_order = clib_host_to_net_u32 (tmp[0]);
 454   tmp = (u32 *) mp->last_ip_address;
 455   end_host_order = clib_host_to_net_u32 (tmp[0]);
 456
 457   count = (end_host_order - start_host_order) + 1;
 458
 459   vrf_id = clib_host_to_net_u32 (mp->vrf_id);
 460
 461   if (count > 1024)
 462     nat44_ei_log_info ("%U - %U, %d addresses...", format_ip4_address,
 463                        mp->first_ip_address, format_ip4_address,
 464                        mp->last_ip_address, count);
 465
 466   memcpy (&this_addr.as_u8, mp->first_ip_address, 4);
 467
 468   for (i = 0; i < count; i++)
 469     {
 470       if (is_add)
 471         rv = nat44_ei_add_address (nm, &this_addr, vrf_id);
 472       else
 473         rv = nat44_ei_del_address (nm, this_addr, 0);
 474
 475       if (rv)
 476         goto send_reply;
 477
 478       if (nm->out2in_dpo)
 479         nat44_ei_add_del_address_dpo (this_addr, is_add);
 480
 481       increment_v4_address (&this_addr);
 482     }
 483
 484 send_reply:
 485   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_ADDRESS_RANGE_REPLY);
 486 }
 487
 488 static void
 489 send_nat44_ei_address_details (nat44_ei_address_t *a,
 490                                vl_api_registration_t *reg, u32 context)
 491 {
 492   vl_api_nat44_ei_address_details_t *rmp;
 493   nat44_ei_main_t *nm = &nat44_ei_main;
 494
 495   rmp = vl_msg_api_alloc (sizeof (*rmp));
 496   clib_memset (rmp, 0, sizeof (*rmp));
 497   rmp->_vl_msg_id = ntohs (VL_API_NAT44_EI_ADDRESS_DETAILS + nm->msg_id_base);
 498   clib_memcpy (rmp->ip_address, &(a->addr), 4);
 499   if (a->fib_index != ~0)
 500     {
 501       fib_table_t *fib = fib_table_get (a->fib_index, FIB_PROTOCOL_IP4);
 502       rmp->vrf_id = ntohl (fib->ft_table_id);
 503     }
 504   else
 505     rmp->vrf_id = ~0;
 506   rmp->context = context;
 507
 508   vl_api_send_msg (reg, (u8 *) rmp);
 509 }
 510
 511 static void
 512 vl_api_nat44_ei_address_dump_t_handler (vl_api_nat44_ei_address_dump_t *mp)
 513 {
 514   vl_api_registration_t *reg;
 515   nat44_ei_main_t *nm = &nat44_ei_main;
 516   nat44_ei_address_t *a;
 517
 518   reg = vl_api_client_index_to_registration (mp->client_index);
 519   if (!reg)
 520     return;
 521
 522   vec_foreach (a, nm->addresses)
 523     {
 524       send_nat44_ei_address_details (a, reg, mp->context);
 525     }
 526 }
 527
 528 static void
 529 vl_api_nat44_ei_interface_add_del_feature_t_handler (
 530   vl_api_nat44_ei_interface_add_del_feature_t *mp)
 531 {
 532   nat44_ei_main_t *nm = &nat44_ei_main;
 533   vl_api_nat44_ei_interface_add_del_feature_reply_t *rmp;
 534   u32 sw_if_index = ntohl (mp->sw_if_index);
 535   u8 is_del;
 536   int rv = 0;
 537
 538   is_del = !mp->is_add;
 539
 540   VALIDATE_SW_IF_INDEX (mp);
 541
 542   rv = nat44_ei_interface_add_del (sw_if_index, mp->flags & NAT44_EI_IF_INSIDE,
 543                                    is_del);
 544
 545   BAD_SW_IF_INDEX_LABEL;
 546
 547   REPLY_MACRO (VL_API_NAT44_EI_INTERFACE_ADD_DEL_FEATURE_REPLY);
 548 }
 549
 550 static void
 551 send_nat44_ei_interface_details (nat44_ei_interface_t *i,
 552                                  vl_api_registration_t *reg, u32 context)
 553 {
 554   vl_api_nat44_ei_interface_details_t *rmp;
 555   nat44_ei_main_t *nm = &nat44_ei_main;
 556
 557   rmp = vl_msg_api_alloc (sizeof (*rmp));
 558   clib_memset (rmp, 0, sizeof (*rmp));
 559   rmp->_vl_msg_id =
 560     ntohs (VL_API_NAT44_EI_INTERFACE_DETAILS + nm->msg_id_base);
 561   rmp->sw_if_index = ntohl (i->sw_if_index);
 562
 563   if (nat44_ei_interface_is_inside (i))
 564     rmp->flags |= NAT44_EI_IF_INSIDE;
 565   if (nat44_ei_interface_is_outside (i))
 566     rmp->flags |= NAT44_EI_IF_OUTSIDE;
 567
 568   rmp->context = context;
 569
 570   vl_api_send_msg (reg, (u8 *) rmp);
 571 }
 572
 573 static void
 574 vl_api_nat44_ei_interface_dump_t_handler (vl_api_nat44_ei_interface_dump_t *mp)
 575 {
 576   vl_api_registration_t *reg;
 577   nat44_ei_main_t *nm = &nat44_ei_main;
 578   nat44_ei_interface_t *i;
 579
 580   reg = vl_api_client_index_to_registration (mp->client_index);
 581   if (!reg)
 582     return;
 583
 584   pool_foreach (i, nm->interfaces)
 585     {
 586       send_nat44_ei_interface_details (i, reg, mp->context);
 587     }
 588 }
 589
 590 static void
 591 vl_api_nat44_ei_interface_add_del_output_feature_t_handler (
 592   vl_api_nat44_ei_interface_add_del_output_feature_t *mp)
 593 {
 594   nat44_ei_main_t *nm = &nat44_ei_main;
 595   vl_api_nat44_ei_interface_add_del_output_feature_reply_t *rmp;
 596   u32 sw_if_index = ntohl (mp->sw_if_index);
 597   int rv = 0;
 598
 599   VALIDATE_SW_IF_INDEX (mp);
 600
 601   rv = nat44_ei_interface_add_del_output_feature (
 602     sw_if_index, mp->flags & NAT44_EI_IF_INSIDE, !mp->is_add);
 603
 604   BAD_SW_IF_INDEX_LABEL;
 605   REPLY_MACRO (VL_API_NAT44_EI_INTERFACE_ADD_DEL_OUTPUT_FEATURE_REPLY);
 606 }
 607
 608 static void
 609 send_nat44_ei_interface_output_feature_details (nat44_ei_interface_t *i,
 610                                                 vl_api_registration_t *reg,
 611                                                 u32 context)
 612 {
 613   vl_api_nat44_ei_interface_output_feature_details_t *rmp;
 614   nat44_ei_main_t *nm = &nat44_ei_main;
 615
 616   rmp = vl_msg_api_alloc (sizeof (*rmp));
 617   clib_memset (rmp, 0, sizeof (*rmp));
 618   rmp->_vl_msg_id =
 619     ntohs (VL_API_NAT44_EI_INTERFACE_OUTPUT_FEATURE_DETAILS + nm->msg_id_base);
 620   rmp->sw_if_index = ntohl (i->sw_if_index);
 621   rmp->context = context;
 622
 623   if (nat44_ei_interface_is_inside (i))
 624     rmp->flags |= NAT44_EI_IF_INSIDE;
 625
 626   vl_api_send_msg (reg, (u8 *) rmp);
 627 }
 628
 629 static void
 630 vl_api_nat44_ei_interface_output_feature_dump_t_handler (
 631   vl_api_nat44_ei_interface_output_feature_dump_t *mp)
 632 {
 633   vl_api_registration_t *reg;
 634   nat44_ei_main_t *nm = &nat44_ei_main;
 635   nat44_ei_interface_t *i;
 636
 637   reg = vl_api_client_index_to_registration (mp->client_index);
 638   if (!reg)
 639     return;
 640
 641   pool_foreach (i, nm->output_feature_interfaces)
 642     {
 643       send_nat44_ei_interface_output_feature_details (i, reg, mp->context);
 644     }
 645 }
 646
 647 static void
 648 vl_api_nat44_ei_add_del_static_mapping_t_handler (
 649   vl_api_nat44_ei_add_del_static_mapping_t *mp)
 650 {
 651   nat44_ei_main_t *nm = &nat44_ei_main;
 652   vl_api_nat44_ei_add_del_static_mapping_reply_t *rmp;
 653   ip4_address_t local_addr, external_addr;
 654   u16 local_port = 0, external_port = 0;
 655   u32 vrf_id, external_sw_if_index;
 656   int rv = 0;
 657   nat_protocol_t proto;
 658   u8 *tag = 0;
 659
 660   memcpy (&local_addr.as_u8, mp->local_ip_address, 4);
 661   memcpy (&external_addr.as_u8, mp->external_ip_address, 4);
 662
 663   if (!(mp->flags & NAT44_EI_ADDR_ONLY_MAPPING))
 664     {
 665       local_port = mp->local_port;
 666       external_port = mp->external_port;
 667     }
 668
 669   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
 670   external_sw_if_index = clib_net_to_host_u32 (mp->external_sw_if_index);
 671   proto = ip_proto_to_nat_proto (mp->protocol);
 672
 673   mp->tag[sizeof (mp->tag) - 1] = 0;
 674   tag = format (0, "%s", mp->tag);
 675   vec_terminate_c_string (tag);
 676
 677   rv = nat44_ei_add_del_static_mapping (
 678     local_addr, external_addr, local_port, external_port, proto,
 679     external_sw_if_index, vrf_id, mp->flags & NAT44_EI_ADDR_ONLY_MAPPING, 0,
 680     tag, mp->is_add);
 681
 682   vec_free (tag);
 683
 684   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_STATIC_MAPPING_REPLY);
 685 }
 686
 687 static void
 688 send_nat44_ei_static_mapping_details (nat44_ei_static_mapping_t *m,
 689                                       vl_api_registration_t *reg, u32 context)
 690 {
 691   vl_api_nat44_ei_static_mapping_details_t *rmp;
 692   nat44_ei_main_t *nm = &nat44_ei_main;
 693   u32 len = sizeof (*rmp);
 694
 695   rmp = vl_msg_api_alloc (len);
 696   clib_memset (rmp, 0, len);
 697   rmp->_vl_msg_id =
 698     ntohs (VL_API_NAT44_EI_STATIC_MAPPING_DETAILS + nm->msg_id_base);
 699
 700   clib_memcpy (rmp->local_ip_address, &(m->local_addr), 4);
 701   clib_memcpy (rmp->external_ip_address, &(m->external_addr), 4);
 702   rmp->external_sw_if_index = ~0;
 703   rmp->vrf_id = htonl (m->vrf_id);
 704   rmp->context = context;
 705
 706   if (nat44_ei_is_addr_only_static_mapping (m))
 707     {
 708       rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 709     }
 710   else
 711     {
 712       rmp->protocol = nat_proto_to_ip_proto (m->proto);
 713       rmp->external_port = m->external_port;
 714       rmp->local_port = m->local_port;
 715     }
 716
 717   if (m->tag)
 718     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 719
 720   vl_api_send_msg (reg, (u8 *) rmp);
 721 }
 722
 723 static void
 724 send_nat44_ei_static_map_resolve_details (nat44_ei_static_map_resolve_t *m,
 725                                           vl_api_registration_t *reg,
 726                                           u32 context)
 727 {
 728   vl_api_nat44_ei_static_mapping_details_t *rmp;
 729   nat44_ei_main_t *nm = &nat44_ei_main;
 730
 731   rmp = vl_msg_api_alloc (sizeof (*rmp));
 732   clib_memset (rmp, 0, sizeof (*rmp));
 733   rmp->_vl_msg_id =
 734     ntohs (VL_API_NAT44_EI_STATIC_MAPPING_DETAILS + nm->msg_id_base);
 735   clib_memcpy (rmp->local_ip_address, &(m->l_addr), 4);
 736   rmp->external_sw_if_index = htonl (m->sw_if_index);
 737   rmp->vrf_id = htonl (m->vrf_id);
 738   rmp->context = context;
 739
 740   if (m->addr_only)
 741     {
 742       rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 743     }
 744   else
 745     {
 746       rmp->protocol = nat_proto_to_ip_proto (m->proto);
 747       rmp->external_port = m->e_port;
 748       rmp->local_port = m->l_port;
 749     }
 750   if (m->tag)
 751     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 752
 753   vl_api_send_msg (reg, (u8 *) rmp);
 754 }
 755
 756 static void
 757 vl_api_nat44_ei_static_mapping_dump_t_handler (
 758   vl_api_nat44_ei_static_mapping_dump_t *mp)
 759 {
 760   vl_api_registration_t *reg;
 761   nat44_ei_main_t *nm = &nat44_ei_main;
 762   nat44_ei_static_mapping_t *m;
 763   nat44_ei_static_map_resolve_t *rp;
 764   int j;
 765
 766   reg = vl_api_client_index_to_registration (mp->client_index);
 767   if (!reg)
 768     return;
 769
 770   pool_foreach (m, nm->static_mappings)
 771     {
 772       if (!nat44_ei_is_identity_static_mapping (m))
 773         send_nat44_ei_static_mapping_details (m, reg, mp->context);
 774     }
 775
 776   for (j = 0; j < vec_len (nm->to_resolve); j++)
 777     {
 778       rp = nm->to_resolve + j;
 779       if (!rp->identity_nat)
 780         send_nat44_ei_static_map_resolve_details (rp, reg, mp->context);
 781     }
 782 }
 783
 784 static void
 785 vl_api_nat44_ei_add_del_identity_mapping_t_handler (
 786   vl_api_nat44_ei_add_del_identity_mapping_t *mp)
 787 {
 788   nat44_ei_main_t *nm = &nat44_ei_main;
 789   vl_api_nat44_ei_add_del_identity_mapping_reply_t *rmp;
 790   ip4_address_t addr;
 791   u16 port = 0;
 792   u32 vrf_id, sw_if_index;
 793   int rv = 0;
 794   nat_protocol_t proto = NAT_PROTOCOL_OTHER;
 795   u8 *tag = 0;
 796
 797   if (!(mp->flags & NAT44_EI_ADDR_ONLY_MAPPING))
 798     {
 799       port = mp->port;
 800       proto = ip_proto_to_nat_proto (mp->protocol);
 801     }
 802   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
 803   sw_if_index = clib_net_to_host_u32 (mp->sw_if_index);
 804   if (sw_if_index != ~0)
 805     addr.as_u32 = 0;
 806   else
 807     memcpy (&addr.as_u8, mp->ip_address, 4);
 808   mp->tag[sizeof (mp->tag) - 1] = 0;
 809   tag = format (0, "%s", mp->tag);
 810   vec_terminate_c_string (tag);
 811
 812   rv = nat44_ei_add_del_static_mapping (
 813     addr, addr, port, port, proto, sw_if_index, vrf_id,
 814     mp->flags & NAT44_EI_ADDR_ONLY_MAPPING, 1, tag, mp->is_add);
 815
 816   vec_free (tag);
 817
 818   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_IDENTITY_MAPPING_REPLY);
 819 }
 820
 821 static void
 822 send_nat44_ei_identity_mapping_details (nat44_ei_static_mapping_t *m,
 823                                         int index, vl_api_registration_t *reg,
 824                                         u32 context)
 825 {
 826   vl_api_nat44_ei_identity_mapping_details_t *rmp;
 827   nat44_ei_main_t *nm = &nat44_ei_main;
 828   nat44_ei_lb_addr_port_t *local = pool_elt_at_index (m->locals, index);
 829
 830   rmp = vl_msg_api_alloc (sizeof (*rmp));
 831   clib_memset (rmp, 0, sizeof (*rmp));
 832   rmp->_vl_msg_id =
 833     ntohs (VL_API_NAT44_EI_IDENTITY_MAPPING_DETAILS + nm->msg_id_base);
 834
 835   if (nat44_ei_is_addr_only_static_mapping (m))
 836     rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 837
 838   clib_memcpy (rmp->ip_address, &(m->local_addr), 4);
 839   rmp->port = m->local_port;
 840   rmp->sw_if_index = ~0;
 841   rmp->vrf_id = htonl (local->vrf_id);
 842   rmp->protocol = nat_proto_to_ip_proto (m->proto);
 843   rmp->context = context;
 844   if (m->tag)
 845     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 846
 847   vl_api_send_msg (reg, (u8 *) rmp);
 848 }
 849
 850 static void
 851 send_nat44_ei_identity_map_resolve_details (nat44_ei_static_map_resolve_t *m,
 852                                             vl_api_registration_t *reg,
 853                                             u32 context)
 854 {
 855   vl_api_nat44_ei_identity_mapping_details_t *rmp;
 856   nat44_ei_main_t *nm = &nat44_ei_main;
 857   rmp = vl_msg_api_alloc (sizeof (*rmp));
 858   clib_memset (rmp, 0, sizeof (*rmp));
 859   rmp->_vl_msg_id =
 860     ntohs (VL_API_NAT44_EI_IDENTITY_MAPPING_DETAILS + nm->msg_id_base);
 861
 862   if (m->addr_only)
 863     rmp->flags = (vl_api_nat44_ei_config_flags_t) NAT44_EI_ADDR_ONLY_MAPPING;
 864
 865   rmp->port = m->l_port;
 866   rmp->sw_if_index = htonl (m->sw_if_index);
 867   rmp->vrf_id = htonl (m->vrf_id);
 868   rmp->protocol = nat_proto_to_ip_proto (m->proto);
 869   rmp->context = context;
 870   if (m->tag)
 871     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 872
 873   vl_api_send_msg (reg, (u8 *) rmp);
 874 }
 875
 876 static void
 877 vl_api_nat44_ei_identity_mapping_dump_t_handler (
 878   vl_api_nat44_ei_identity_mapping_dump_t *mp)
 879 {
 880   vl_api_registration_t *reg;
 881   nat44_ei_main_t *nm = &nat44_ei_main;
 882   nat44_ei_static_mapping_t *m;
 883   nat44_ei_static_map_resolve_t *rp;
 884   int j;
 885
 886   reg = vl_api_client_index_to_registration (mp->client_index);
 887   if (!reg)
 888     return;
 889
 890   pool_foreach (m, nm->static_mappings)
 891     {
 892       if (nat44_ei_is_identity_static_mapping (m))
 893         {
 894           pool_foreach_index (j, m->locals)
 895             {
 896               send_nat44_ei_identity_mapping_details (m, j, reg, mp->context);
 897             }
 898         }
 899     }
 900
 901   for (j = 0; j < vec_len (nm->to_resolve); j++)
 902     {
 903       rp = nm->to_resolve + j;
 904       if (rp->identity_nat)
 905         send_nat44_ei_identity_map_resolve_details (rp, reg, mp->context);
 906     }
 907 }
 908
 909 static void
 910 vl_api_nat44_ei_add_del_interface_addr_t_handler (
 911   vl_api_nat44_ei_add_del_interface_addr_t *mp)
 912 {
 913   nat44_ei_main_t *nm = &nat44_ei_main;
 914   vl_api_nat44_ei_add_del_interface_addr_reply_t *rmp;
 915   u32 sw_if_index = ntohl (mp->sw_if_index);
 916   int rv = 0;
 917   u8 is_del;
 918
 919   is_del = !mp->is_add;
 920
 921   VALIDATE_SW_IF_INDEX (mp);
 922
 923   rv = nat44_ei_add_interface_address (nm, sw_if_index, is_del);
 924
 925   BAD_SW_IF_INDEX_LABEL;
 926   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_INTERFACE_ADDR_REPLY);
 927 }
 928
 929 static void
 930 send_nat44_ei_interface_addr_details (u32 sw_if_index,
 931                                       vl_api_registration_t *reg, u32 context)
 932 {
 933   vl_api_nat44_ei_interface_addr_details_t *rmp;
 934   nat44_ei_main_t *nm = &nat44_ei_main;
 935
 936   rmp = vl_msg_api_alloc (sizeof (*rmp));
 937   clib_memset (rmp, 0, sizeof (*rmp));
 938   rmp->_vl_msg_id =
 939     ntohs (VL_API_NAT44_EI_INTERFACE_ADDR_DETAILS + nm->msg_id_base);
 940   rmp->sw_if_index = ntohl (sw_if_index);
 941   rmp->context = context;
 942
 943   vl_api_send_msg (reg, (u8 *) rmp);
 944 }
 945
 946 static void
 947 vl_api_nat44_ei_interface_addr_dump_t_handler (
 948   vl_api_nat44_ei_interface_addr_dump_t *mp)
 949 {
 950   vl_api_registration_t *reg;
 951   nat44_ei_main_t *nm = &nat44_ei_main;
 952   u32 *i;
 953
 954   reg = vl_api_client_index_to_registration (mp->client_index);
 955   if (!reg)
 956     return;
 957
 958   vec_foreach (i, nm->auto_add_sw_if_indices)
 959     send_nat44_ei_interface_addr_details (*i, reg, mp->context);
 960 }
 961
 962 static void
 963 send_nat44_ei_user_details (nat44_ei_user_t *u, vl_api_registration_t *reg,
 964                             u32 context)
 965 {
 966   vl_api_nat44_ei_user_details_t *rmp;
 967   nat44_ei_main_t *nm = &nat44_ei_main;
 968   ip4_main_t *im = &ip4_main;
 969
 970   rmp = vl_msg_api_alloc (sizeof (*rmp));
 971   clib_memset (rmp, 0, sizeof (*rmp));
 972   rmp->_vl_msg_id = ntohs (VL_API_NAT44_EI_USER_DETAILS + nm->msg_id_base);
 973
 974   if (!pool_is_free_index (im->fibs, u->fib_index))
 975     {
 976       fib_table_t *fib = fib_table_get (u->fib_index, FIB_PROTOCOL_IP4);
 977       rmp->vrf_id = ntohl (fib->ft_table_id);
 978     }
 979
 980   clib_memcpy (rmp->ip_address, &(u->addr), 4);
 981   rmp->nsessions = ntohl (u->nsessions);
 982   rmp->nstaticsessions = ntohl (u->nstaticsessions);
 983   rmp->context = context;
 984
 985   vl_api_send_msg (reg, (u8 *) rmp);
 986 }
 987
 988 static void
 989 vl_api_nat44_ei_user_dump_t_handler (vl_api_nat44_ei_user_dump_t *mp)
 990 {
 991   vl_api_registration_t *reg;
 992   nat44_ei_main_t *nm = &nat44_ei_main;
 993   nat44_ei_main_per_thread_data_t *tnm;
 994   nat44_ei_user_t *u;
 995
 996   reg = vl_api_client_index_to_registration (mp->client_index);
 997   if (!reg)
 998     return;
 999
1000   vec_foreach (tnm, nm->per_thread_data)
1001     {
1002       pool_foreach (u, tnm->users)
1003         {
1004           send_nat44_ei_user_details (u, reg, mp->context);
1005         }
1006     }
1007 }
1008
1009 static void
1010 send_nat44_ei_user_session_details (nat44_ei_session_t *s,
1011                                     vl_api_registration_t *reg, u32 context)
1012 {
1013   vl_api_nat44_ei_user_session_details_t *rmp;
1014   nat44_ei_main_t *nm = &nat44_ei_main;
1015
1016   rmp = vl_msg_api_alloc (sizeof (*rmp));
1017   clib_memset (rmp, 0, sizeof (*rmp));
1018   rmp->_vl_msg_id =
1019     ntohs (VL_API_NAT44_EI_USER_SESSION_DETAILS + nm->msg_id_base);
1020   clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
1021   clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
1022
1023   if (nat44_ei_is_session_static (s))
1024     rmp->flags |= NAT44_EI_STATIC_MAPPING;
1025
1026   rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
1027   rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
1028   rmp->total_pkts = ntohl (s->total_pkts);
1029   rmp->context = context;
1030   if (nat44_ei_is_unk_proto_session (s))
1031     {
1032       rmp->outside_port = 0;
1033       rmp->inside_port = 0;
1034       rmp->protocol = ntohs (s->in2out.port);
1035     }
1036   else
1037     {
1038       rmp->outside_port = s->out2in.port;
1039       rmp->inside_port = s->in2out.port;
1040       rmp->protocol = ntohs (nat_proto_to_ip_proto (s->nat_proto));
1041     }
1042   vl_api_send_msg (reg, (u8 *) rmp);
1043 }
1044
1045 static void
1046 vl_api_nat44_ei_user_session_dump_t_handler (
1047   vl_api_nat44_ei_user_session_dump_t *mp)
1048 {
1049   vl_api_registration_t *reg;
1050   nat44_ei_main_t *nm = &nat44_ei_main;
1051   nat44_ei_main_per_thread_data_t *tnm;
1052   nat44_ei_session_t *s;
1053   clib_bihash_kv_8_8_t key, value;
1054   nat44_ei_user_key_t ukey;
1055   nat44_ei_user_t *u;
1056   u32 session_index, head_index, elt_index;
1057   dlist_elt_t *head, *elt;
1058   ip4_header_t ip;
1059
1060   reg = vl_api_client_index_to_registration (mp->client_index);
1061   if (!reg)
1062     return;
1063
1064   clib_memcpy (&ukey.addr, mp->ip_address, 4);
1065   ip.src_address.as_u32 = ukey.addr.as_u32;
1066   ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
1067   key.key = ukey.as_u64;
1068   if (nm->num_workers > 1)
1069     tnm = vec_elt_at_index (nm->per_thread_data,
1070                             nm->worker_in2out_cb (&ip, ukey.fib_index, 0));
1071   else
1072     tnm = vec_elt_at_index (nm->per_thread_data, nm->num_workers);
1073
1074   if (clib_bihash_search_8_8 (&tnm->user_hash, &key, &value))
1075     return;
1076   u = pool_elt_at_index (tnm->users, value.value);
1077   if (!u->nsessions && !u->nstaticsessions)
1078     return;
1079
1080   head_index = u->sessions_per_user_list_head_index;
1081   head = pool_elt_at_index (tnm->list_pool, head_index);
1082   elt_index = head->next;
1083   elt = pool_elt_at_index (tnm->list_pool, elt_index);
1084   session_index = elt->value;
1085   while (session_index != ~0)
1086     {
1087       s = pool_elt_at_index (tnm->sessions, session_index);
1088
1089       send_nat44_ei_user_session_details (s, reg, mp->context);
1090
1091       elt_index = elt->next;
1092       elt = pool_elt_at_index (tnm->list_pool, elt_index);
1093       session_index = elt->value;
1094     }
1095 }
1096
1097 static void
1098 vl_api_nat44_ei_del_session_t_handler (vl_api_nat44_ei_del_session_t *mp)
1099 {
1100   nat44_ei_main_t *nm = &nat44_ei_main;
1101   vl_api_nat44_ei_del_session_reply_t *rmp;
1102   ip4_address_t addr, eh_addr;
1103   u16 port;
1104   u32 vrf_id;
1105   int rv = 0;
1106   u8 is_in;
1107   nat_protocol_t proto;
1108
1109   memcpy (&addr.as_u8, mp->address, 4);
1110   port = mp->port;
1111   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
1112   proto = ip_proto_to_nat_proto (mp->protocol);
1113   memcpy (&eh_addr.as_u8, mp->ext_host_address, 4);
1114
1115   // is session inside ?
1116   is_in = mp->flags & NAT44_EI_IF_INSIDE;
1117
1118   rv = nat44_ei_del_session (nm, &addr, port, proto, vrf_id, is_in);
1119
1120   REPLY_MACRO (VL_API_NAT44_EI_DEL_SESSION_REPLY);
1121 }
1122
1123 static void
1124 vl_api_nat44_ei_forwarding_enable_disable_t_handler (
1125   vl_api_nat44_ei_forwarding_enable_disable_t *mp)
1126 {
1127   nat44_ei_main_t *nm = &nat44_ei_main;
1128   vl_api_nat44_ei_forwarding_enable_disable_reply_t *rmp;
1129   int rv = 0;
1130   u32 *ses_to_be_removed = 0, *ses_index;
1131   nat44_ei_main_per_thread_data_t *tnm;
1132   nat44_ei_session_t *s;
1133
1134   nm->forwarding_enabled = mp->enable != 0;
1135
1136   if (mp->enable == 0)
1137     {
1138       vec_foreach (tnm, nm->per_thread_data)
1139         {
1140           vec_foreach (ses_index, ses_to_be_removed)
1141             {
1142               s = pool_elt_at_index (tnm->sessions, ses_index[0]);
1143               nat44_ei_free_session_data (nm, s, tnm - nm->per_thread_data, 0);
1144               nat44_ei_delete_session (nm, s, tnm - nm->per_thread_data);
1145             }
1146
1147           vec_free (ses_to_be_removed);
1148         }
1149     }
1150
1151   REPLY_MACRO (VL_API_NAT44_EI_FORWARDING_ENABLE_DISABLE_REPLY);
1152 }
1153
1154 static void
1155 vl_api_nat44_ei_set_fq_options_t_handler (vl_api_nat44_ei_set_fq_options_t *mp)
1156 {
1157   nat44_ei_main_t *nm = &nat44_ei_main;
1158   vl_api_nat44_ei_set_fq_options_reply_t *rmp;
1159   int rv = 0;
1160   u32 frame_queue_nelts = ntohl (mp->frame_queue_nelts);
1161   rv = nat44_ei_set_frame_queue_nelts (frame_queue_nelts);
1162   REPLY_MACRO (VL_API_NAT44_EI_SET_FQ_OPTIONS_REPLY);
1163 }
1164
1165 static void
1166 vl_api_nat44_ei_show_fq_options_t_handler (
1167   vl_api_nat44_ei_show_fq_options_t *mp)
1168 {
1169   nat44_ei_main_t *nm = &nat44_ei_main;
1170   vl_api_nat44_ei_show_fq_options_reply_t *rmp;
1171   int rv = 0;
1172   /* clang-format off */
1173   REPLY_MACRO2_ZERO (VL_API_NAT44_EI_SHOW_FQ_OPTIONS_REPLY,
1174   ({
1175     rmp->frame_queue_nelts = htonl (nm->frame_queue_nelts);
1176   }));
1177   /* clang-format on */
1178 }
1179
1180 /* API definitions */
1181 #include <vnet/format_fns.h>
1182 #include <nat/nat44-ei/nat44_ei.api.c>
1183
1184 /* Set up the API message handling tables */
1185 clib_error_t *
1186 nat44_ei_api_hookup (vlib_main_t *vm)
1187 {
1188   nat44_ei_main_t *nm = &nat44_ei_main;
1189   nm->msg_id_base = setup_message_id_table ();
1190   return 0;
1191 }
1192
1193 /*
1194  * fd.io coding-style-patch-verification: ON
1195  *
1196  * Local Variables:
1197  * eval: (c-set-style "gnu")
1198  * End:
1199  */