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 (&this_addr, vrf_id);
 473       else
 474         rv = nat44_ei_del_address (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_add_del_interface (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_always_inline int
 592 add_del_dummy_output_interface (u32 sw_if_index, u8 is_inside, u8 is_add)
 593 {
 594   nat44_ei_main_t *nm = &nat44_ei_main;
 595   nat44_ei_interface_t *i;
 596   int rv = 1;
 597
 598   pool_foreach (i, nm->output_feature_dummy_interfaces)
 599     {
 600       if (i->sw_if_index == sw_if_index)
 601         {
 602           if (!is_add)
 603             {
 604               pool_put (nm->output_feature_dummy_interfaces, i);
 605               rv = 0;
 606             }
 607           goto done;
 608         }
 609     }
 610
 611   if (is_add)
 612     {
 613       pool_get (nm->output_feature_dummy_interfaces, i);
 614       i->sw_if_index = sw_if_index;
 615
 616       if (is_inside)
 617         {
 618           i->flags |= NAT44_EI_INTERFACE_FLAG_IS_INSIDE;
 619         }
 620       else
 621         {
 622           i->flags |= NAT44_EI_INTERFACE_FLAG_IS_OUTSIDE;
 623         }
 624
 625       rv = 0;
 626     }
 627
 628 done:
 629   return rv;
 630 }
 631
 632 static void
 633 vl_api_nat44_ei_interface_add_del_output_feature_t_handler (
 634   vl_api_nat44_ei_interface_add_del_output_feature_t *mp)
 635 {
 636   vl_api_nat44_ei_interface_add_del_output_feature_reply_t *rmp;
 637   nat44_ei_main_t *nm = &nat44_ei_main;
 638   u32 sw_if_index;
 639   int rv = 0;
 640
 641   VALIDATE_SW_IF_INDEX (mp);
 642
 643   sw_if_index = ntohl (mp->sw_if_index);
 644
 645   // register all interfaces in the dummy structure
 646   rv = add_del_dummy_output_interface (
 647     sw_if_index, mp->flags & NAT44_EI_IF_INSIDE, mp->is_add);
 648
 649   if (!(mp->flags & NAT44_EI_IF_INSIDE))
 650     {
 651       rv = nat44_ei_add_del_output_interface (sw_if_index, !mp->is_add);
 652     }
 653
 654   BAD_SW_IF_INDEX_LABEL;
 655   REPLY_MACRO (VL_API_NAT44_EI_INTERFACE_ADD_DEL_OUTPUT_FEATURE_REPLY);
 656 }
 657
 658 static void
 659 send_nat44_ei_interface_output_feature_details (nat44_ei_interface_t *i,
 660                                                 vl_api_registration_t *reg,
 661                                                 u32 context)
 662 {
 663   vl_api_nat44_ei_interface_output_feature_details_t *rmp;
 664   nat44_ei_main_t *nm = &nat44_ei_main;
 665
 666   rmp = vl_msg_api_alloc (sizeof (*rmp));
 667   clib_memset (rmp, 0, sizeof (*rmp));
 668   rmp->_vl_msg_id =
 669     ntohs (VL_API_NAT44_EI_INTERFACE_OUTPUT_FEATURE_DETAILS + nm->msg_id_base);
 670   rmp->sw_if_index = ntohl (i->sw_if_index);
 671   rmp->context = context;
 672
 673   if (nat44_ei_interface_is_inside (i))
 674     {
 675       rmp->flags |= NAT44_EI_IF_INSIDE;
 676     }
 677
 678   vl_api_send_msg (reg, (u8 *) rmp);
 679 }
 680
 681 static void
 682 vl_api_nat44_ei_interface_output_feature_dump_t_handler (
 683   vl_api_nat44_ei_interface_output_feature_dump_t *mp)
 684 {
 685   vl_api_registration_t *reg;
 686   nat44_ei_main_t *nm = &nat44_ei_main;
 687   nat44_ei_interface_t *i;
 688
 689   reg = vl_api_client_index_to_registration (mp->client_index);
 690   if (!reg)
 691     return;
 692
 693   pool_foreach (i, nm->output_feature_dummy_interfaces)
 694     {
 695       send_nat44_ei_interface_output_feature_details (i, reg, mp->context);
 696     }
 697 }
 698
 699 static void
 700 vl_api_nat44_ei_add_del_output_interface_t_handler (
 701   vl_api_nat44_ei_add_del_output_interface_t *mp)
 702 {
 703   vl_api_nat44_ei_add_del_output_interface_reply_t *rmp;
 704   nat44_ei_main_t *nm = &nat44_ei_main;
 705   u32 sw_if_index;
 706   int rv = 0;
 707
 708   VALIDATE_SW_IF_INDEX (mp);
 709
 710   sw_if_index = ntohl (mp->sw_if_index);
 711
 712   rv = nat44_ei_add_del_output_interface (sw_if_index, !mp->is_add);
 713
 714   BAD_SW_IF_INDEX_LABEL;
 715   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_OUTPUT_INTERFACE_REPLY);
 716 }
 717
 718 #define vl_endianfun
 719 #include <nat/nat44-ei/nat44_ei.api.h>
 720 #undef vl_endianfun
 721 static void
 722 send_nat44_ei_output_interface_details (u32 index, vl_api_registration_t *rp,
 723                                         u32 context)
 724 {
 725   nat44_ei_main_t *nm = &nat44_ei_main;
 726   vl_api_nat44_ei_output_interface_details_t *rmp;
 727   nat44_ei_interface_t *i =
 728     pool_elt_at_index (nm->output_feature_interfaces, index);
 729
 730   /* Make sure every field is initiated (or don't skip the clib_memset()) */
 731   REPLY_MACRO_DETAILS4 (
 732     VL_API_NAT44_EI_OUTPUT_INTERFACE_DETAILS, rp, context, ({
 733       rmp->sw_if_index = i->sw_if_index;
 734
 735       /* Endian hack until apigen registers _details
 736        * endian functions */
 737       vl_api_nat44_ei_output_interface_details_t_endian (rmp);
 738       rmp->_vl_msg_id = htons (rmp->_vl_msg_id);
 739       rmp->context = htonl (rmp->context);
 740     }));
 741 }
 742
 743 static void
 744 vl_api_nat44_ei_output_interface_get_t_handler (
 745   vl_api_nat44_ei_output_interface_get_t *mp)
 746 {
 747   vl_api_nat44_ei_output_interface_get_reply_t *rmp;
 748   nat44_ei_main_t *nm = &nat44_ei_main;
 749   i32 rv = 0;
 750
 751   if (pool_elts (nm->output_feature_interfaces) == 0)
 752     {
 753       REPLY_MACRO (VL_API_NAT44_EI_OUTPUT_INTERFACE_GET_REPLY);
 754       return;
 755     }
 756
 757   REPLY_AND_DETAILS_MACRO (
 758     VL_API_NAT44_EI_OUTPUT_INTERFACE_GET_REPLY, nm->output_feature_interfaces,
 759     ({ send_nat44_ei_output_interface_details (cursor, rp, mp->context); }));
 760 }
 761
 762 static void
 763 vl_api_nat44_ei_add_del_static_mapping_t_handler (
 764   vl_api_nat44_ei_add_del_static_mapping_t *mp)
 765 {
 766   vl_api_nat44_ei_add_del_static_mapping_reply_t *rmp;
 767
 768   nat44_ei_main_t *nm = &nat44_ei_main;
 769   int rv = 0;
 770
 771   ip4_address_t l_addr, e_addr, pool_addr = { 0 };
 772   u32 sw_if_index, flags = 0, vrf_id;
 773   u16 l_port = 0, e_port = 0;
 774   nat_protocol_t proto = 0;
 775   u8 *tag = 0;
 776
 777   memcpy (&l_addr.as_u8, mp->local_ip_address, 4);
 778
 779   if (mp->flags & NAT44_EI_ADDR_ONLY_MAPPING)
 780     {
 781       flags |= NAT44_EI_SM_FLAG_ADDR_ONLY;
 782     }
 783   else
 784     {
 785       l_port = mp->local_port;
 786       e_port = mp->external_port;
 787       proto = ip_proto_to_nat_proto (mp->protocol);
 788     }
 789
 790   sw_if_index = clib_net_to_host_u32 (mp->external_sw_if_index);
 791   if (sw_if_index != ~0)
 792     {
 793       e_addr.as_u32 = 0;
 794     }
 795   else
 796     {
 797       memcpy (&e_addr.as_u8, mp->external_ip_address, 4);
 798     }
 799
 800   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
 801
 802   if (mp->is_add)
 803     {
 804       mp->tag[sizeof (mp->tag) - 1] = 0;
 805       tag = format (0, "%s", mp->tag);
 806       vec_terminate_c_string (tag);
 807
 808       rv = nat44_ei_add_static_mapping (l_addr, e_addr, l_port, e_port, proto,
 809                                         vrf_id, sw_if_index, flags, pool_addr,
 810                                         tag);
 811       vec_free (tag);
 812     }
 813   else
 814     {
 815       rv = nat44_ei_del_static_mapping (l_addr, e_addr, l_port, e_port, proto,
 816                                         vrf_id, sw_if_index, flags);
 817     }
 818   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_STATIC_MAPPING_REPLY);
 819 }
 820
 821 static void
 822 send_nat44_ei_static_mapping_details (nat44_ei_static_mapping_t *m,
 823                                       vl_api_registration_t *reg, u32 context)
 824 {
 825   vl_api_nat44_ei_static_mapping_details_t *rmp;
 826   nat44_ei_main_t *nm = &nat44_ei_main;
 827   u32 len = sizeof (*rmp);
 828
 829   rmp = vl_msg_api_alloc (len);
 830   clib_memset (rmp, 0, len);
 831   rmp->_vl_msg_id =
 832     ntohs (VL_API_NAT44_EI_STATIC_MAPPING_DETAILS + nm->msg_id_base);
 833
 834   clib_memcpy (rmp->local_ip_address, &(m->local_addr), 4);
 835   clib_memcpy (rmp->external_ip_address, &(m->external_addr), 4);
 836   rmp->external_sw_if_index = ~0;
 837   rmp->vrf_id = htonl (m->vrf_id);
 838   rmp->context = context;
 839
 840   if (is_sm_addr_only (m->flags))
 841     {
 842       rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 843     }
 844   else
 845     {
 846       rmp->protocol = nat_proto_to_ip_proto (m->proto);
 847       rmp->external_port = m->external_port;
 848       rmp->local_port = m->local_port;
 849     }
 850
 851   if (m->tag)
 852     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 853
 854   vl_api_send_msg (reg, (u8 *) rmp);
 855 }
 856
 857 static void
 858 send_nat44_ei_static_map_resolve_details (nat44_ei_static_map_resolve_t *m,
 859                                           vl_api_registration_t *reg,
 860                                           u32 context)
 861 {
 862   vl_api_nat44_ei_static_mapping_details_t *rmp;
 863   nat44_ei_main_t *nm = &nat44_ei_main;
 864
 865   rmp = vl_msg_api_alloc (sizeof (*rmp));
 866   clib_memset (rmp, 0, sizeof (*rmp));
 867   rmp->_vl_msg_id =
 868     ntohs (VL_API_NAT44_EI_STATIC_MAPPING_DETAILS + nm->msg_id_base);
 869   clib_memcpy (rmp->local_ip_address, &(m->l_addr), 4);
 870   rmp->external_sw_if_index = htonl (m->sw_if_index);
 871   rmp->vrf_id = htonl (m->vrf_id);
 872   rmp->context = context;
 873
 874   if (is_sm_addr_only (m->flags))
 875     {
 876       rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 877     }
 878   else
 879     {
 880       rmp->protocol = nat_proto_to_ip_proto (m->proto);
 881       rmp->external_port = m->e_port;
 882       rmp->local_port = m->l_port;
 883     }
 884   if (m->tag)
 885     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
 886
 887   vl_api_send_msg (reg, (u8 *) rmp);
 888 }
 889
 890 static void
 891 vl_api_nat44_ei_static_mapping_dump_t_handler (
 892   vl_api_nat44_ei_static_mapping_dump_t *mp)
 893 {
 894   vl_api_registration_t *reg;
 895   nat44_ei_main_t *nm = &nat44_ei_main;
 896   nat44_ei_static_mapping_t *m;
 897   nat44_ei_static_map_resolve_t *rp;
 898   int j;
 899
 900   reg = vl_api_client_index_to_registration (mp->client_index);
 901   if (!reg)
 902     return;
 903
 904   pool_foreach (m, nm->static_mappings)
 905     {
 906       if (!is_sm_identity_nat (m->flags))
 907         send_nat44_ei_static_mapping_details (m, reg, mp->context);
 908     }
 909
 910   for (j = 0; j < vec_len (nm->to_resolve); j++)
 911     {
 912       rp = nm->to_resolve + j;
 913       if (!is_sm_identity_nat (rp->flags))
 914         send_nat44_ei_static_map_resolve_details (rp, reg, mp->context);
 915     }
 916 }
 917
 918 static void
 919 vl_api_nat44_ei_add_del_identity_mapping_t_handler (
 920   vl_api_nat44_ei_add_del_identity_mapping_t *mp)
 921 {
 922   vl_api_nat44_ei_add_del_identity_mapping_reply_t *rmp;
 923
 924   nat44_ei_main_t *nm = &nat44_ei_main;
 925   int rv = 0;
 926
 927   ip4_address_t addr, pool_addr = { 0 };
 928   u32 sw_if_index, flags, vrf_id;
 929   nat_protocol_t proto = 0;
 930   u16 port = 0;
 931   u8 *tag = 0;
 932
 933   flags = NAT44_EI_SM_FLAG_IDENTITY_NAT;
 934
 935   if (mp->flags & NAT44_EI_ADDR_ONLY_MAPPING)
 936     {
 937       flags |= NAT44_EI_SM_FLAG_ADDR_ONLY;
 938     }
 939   else
 940     {
 941       port = mp->port;
 942       proto = ip_proto_to_nat_proto (mp->protocol);
 943     }
 944
 945   sw_if_index = clib_net_to_host_u32 (mp->sw_if_index);
 946   if (sw_if_index != ~0)
 947     {
 948       addr.as_u32 = 0;
 949     }
 950   else
 951     {
 952       memcpy (&addr.as_u8, mp->ip_address, 4);
 953     }
 954
 955   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
 956
 957   if (mp->is_add)
 958     {
 959       mp->tag[sizeof (mp->tag) - 1] = 0;
 960       tag = format (0, "%s", mp->tag);
 961       vec_terminate_c_string (tag);
 962
 963       rv = nat44_ei_add_static_mapping (addr, addr, port, port, proto, vrf_id,
 964                                         sw_if_index, flags, pool_addr, tag);
 965       vec_free (tag);
 966     }
 967   else
 968     {
 969       rv = nat44_ei_del_static_mapping (addr, addr, port, port, proto, vrf_id,
 970                                         sw_if_index, flags);
 971     }
 972
 973   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_IDENTITY_MAPPING_REPLY);
 974 }
 975
 976 static void
 977 send_nat44_ei_identity_mapping_details (nat44_ei_static_mapping_t *m,
 978                                         int index, vl_api_registration_t *reg,
 979                                         u32 context)
 980 {
 981   vl_api_nat44_ei_identity_mapping_details_t *rmp;
 982   nat44_ei_main_t *nm = &nat44_ei_main;
 983   nat44_ei_lb_addr_port_t *local = pool_elt_at_index (m->locals, index);
 984
 985   rmp = vl_msg_api_alloc (sizeof (*rmp));
 986   clib_memset (rmp, 0, sizeof (*rmp));
 987   rmp->_vl_msg_id =
 988     ntohs (VL_API_NAT44_EI_IDENTITY_MAPPING_DETAILS + nm->msg_id_base);
 989
 990   if (is_sm_addr_only (m->flags))
 991     rmp->flags |= NAT44_EI_ADDR_ONLY_MAPPING;
 992
 993   clib_memcpy (rmp->ip_address, &(m->local_addr), 4);
 994   rmp->port = m->local_port;
 995   rmp->sw_if_index = ~0;
 996   rmp->vrf_id = htonl (local->vrf_id);
 997   rmp->protocol = nat_proto_to_ip_proto (m->proto);
 998   rmp->context = context;
 999   if (m->tag)
1000     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
1001
1002   vl_api_send_msg (reg, (u8 *) rmp);
1003 }
1004
1005 static void
1006 send_nat44_ei_identity_map_resolve_details (nat44_ei_static_map_resolve_t *m,
1007                                             vl_api_registration_t *reg,
1008                                             u32 context)
1009 {
1010   vl_api_nat44_ei_identity_mapping_details_t *rmp;
1011   nat44_ei_main_t *nm = &nat44_ei_main;
1012   rmp = vl_msg_api_alloc (sizeof (*rmp));
1013   clib_memset (rmp, 0, sizeof (*rmp));
1014   rmp->_vl_msg_id =
1015     ntohs (VL_API_NAT44_EI_IDENTITY_MAPPING_DETAILS + nm->msg_id_base);
1016
1017   if (is_sm_addr_only (m->flags))
1018     rmp->flags = (vl_api_nat44_ei_config_flags_t) NAT44_EI_ADDR_ONLY_MAPPING;
1019
1020   rmp->port = m->l_port;
1021   rmp->sw_if_index = htonl (m->sw_if_index);
1022   rmp->vrf_id = htonl (m->vrf_id);
1023   rmp->protocol = nat_proto_to_ip_proto (m->proto);
1024   rmp->context = context;
1025   if (m->tag)
1026     strncpy ((char *) rmp->tag, (char *) m->tag, vec_len (m->tag));
1027
1028   vl_api_send_msg (reg, (u8 *) rmp);
1029 }
1030
1031 static void
1032 vl_api_nat44_ei_identity_mapping_dump_t_handler (
1033   vl_api_nat44_ei_identity_mapping_dump_t *mp)
1034 {
1035   vl_api_registration_t *reg;
1036   nat44_ei_main_t *nm = &nat44_ei_main;
1037   nat44_ei_static_mapping_t *m;
1038   nat44_ei_static_map_resolve_t *rp;
1039   int j;
1040
1041   reg = vl_api_client_index_to_registration (mp->client_index);
1042   if (!reg)
1043     return;
1044
1045   pool_foreach (m, nm->static_mappings)
1046     {
1047       if (is_sm_identity_nat (m->flags))
1048         {
1049           pool_foreach_index (j, m->locals)
1050             {
1051               send_nat44_ei_identity_mapping_details (m, j, reg, mp->context);
1052             }
1053         }
1054     }
1055
1056   for (j = 0; j < vec_len (nm->to_resolve); j++)
1057     {
1058       rp = nm->to_resolve + j;
1059       if (is_sm_identity_nat (rp->flags))
1060         send_nat44_ei_identity_map_resolve_details (rp, reg, mp->context);
1061     }
1062 }
1063
1064 static void
1065 vl_api_nat44_ei_add_del_interface_addr_t_handler (
1066   vl_api_nat44_ei_add_del_interface_addr_t *mp)
1067 {
1068   nat44_ei_main_t *nm = &nat44_ei_main;
1069   vl_api_nat44_ei_add_del_interface_addr_reply_t *rmp;
1070   u32 sw_if_index = ntohl (mp->sw_if_index);
1071   int rv = 0;
1072
1073   VALIDATE_SW_IF_INDEX (mp);
1074
1075   if (mp->is_add)
1076     {
1077       rv = nat44_ei_add_interface_address (sw_if_index);
1078     }
1079   else
1080     {
1081       rv = nat44_ei_del_interface_address (sw_if_index);
1082     }
1083
1084   BAD_SW_IF_INDEX_LABEL;
1085   REPLY_MACRO (VL_API_NAT44_EI_ADD_DEL_INTERFACE_ADDR_REPLY);
1086 }
1087
1088 static void
1089 send_nat44_ei_interface_addr_details (u32 sw_if_index,
1090                                       vl_api_registration_t *reg, u32 context)
1091 {
1092   vl_api_nat44_ei_interface_addr_details_t *rmp;
1093   nat44_ei_main_t *nm = &nat44_ei_main;
1094
1095   rmp = vl_msg_api_alloc (sizeof (*rmp));
1096   clib_memset (rmp, 0, sizeof (*rmp));
1097   rmp->_vl_msg_id =
1098     ntohs (VL_API_NAT44_EI_INTERFACE_ADDR_DETAILS + nm->msg_id_base);
1099   rmp->sw_if_index = ntohl (sw_if_index);
1100   rmp->context = context;
1101
1102   vl_api_send_msg (reg, (u8 *) rmp);
1103 }
1104
1105 static void
1106 vl_api_nat44_ei_interface_addr_dump_t_handler (
1107   vl_api_nat44_ei_interface_addr_dump_t *mp)
1108 {
1109   vl_api_registration_t *reg;
1110   nat44_ei_main_t *nm = &nat44_ei_main;
1111   u32 *i;
1112
1113   reg = vl_api_client_index_to_registration (mp->client_index);
1114   if (!reg)
1115     return;
1116
1117   vec_foreach (i, nm->auto_add_sw_if_indices)
1118     send_nat44_ei_interface_addr_details (*i, reg, mp->context);
1119 }
1120
1121 static void
1122 send_nat44_ei_user_details (nat44_ei_user_t *u, vl_api_registration_t *reg,
1123                             u32 context)
1124 {
1125   vl_api_nat44_ei_user_details_t *rmp;
1126   nat44_ei_main_t *nm = &nat44_ei_main;
1127   ip4_main_t *im = &ip4_main;
1128
1129   rmp = vl_msg_api_alloc (sizeof (*rmp));
1130   clib_memset (rmp, 0, sizeof (*rmp));
1131   rmp->_vl_msg_id = ntohs (VL_API_NAT44_EI_USER_DETAILS + nm->msg_id_base);
1132
1133   if (!pool_is_free_index (im->fibs, u->fib_index))
1134     {
1135       fib_table_t *fib = fib_table_get (u->fib_index, FIB_PROTOCOL_IP4);
1136       rmp->vrf_id = ntohl (fib->ft_table_id);
1137     }
1138
1139   clib_memcpy (rmp->ip_address, &(u->addr), 4);
1140   rmp->nsessions = ntohl (u->nsessions);
1141   rmp->nstaticsessions = ntohl (u->nstaticsessions);
1142   rmp->context = context;
1143
1144   vl_api_send_msg (reg, (u8 *) rmp);
1145 }
1146
1147 static void
1148 vl_api_nat44_ei_user_dump_t_handler (vl_api_nat44_ei_user_dump_t *mp)
1149 {
1150   vl_api_registration_t *reg;
1151   nat44_ei_main_t *nm = &nat44_ei_main;
1152   nat44_ei_main_per_thread_data_t *tnm;
1153   nat44_ei_user_t *u;
1154
1155   reg = vl_api_client_index_to_registration (mp->client_index);
1156   if (!reg)
1157     return;
1158
1159   vec_foreach (tnm, nm->per_thread_data)
1160     {
1161       pool_foreach (u, tnm->users)
1162         {
1163           send_nat44_ei_user_details (u, reg, mp->context);
1164         }
1165     }
1166 }
1167
1168 static void
1169 send_nat44_ei_user_session_details (nat44_ei_session_t *s,
1170                                     vl_api_registration_t *reg, u32 context)
1171 {
1172   vl_api_nat44_ei_user_session_details_t *rmp;
1173   nat44_ei_main_t *nm = &nat44_ei_main;
1174
1175   rmp = vl_msg_api_alloc (sizeof (*rmp));
1176   clib_memset (rmp, 0, sizeof (*rmp));
1177   rmp->_vl_msg_id =
1178     ntohs (VL_API_NAT44_EI_USER_SESSION_DETAILS + nm->msg_id_base);
1179   clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
1180   clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
1181
1182   if (nat44_ei_is_session_static (s))
1183     rmp->flags |= NAT44_EI_STATIC_MAPPING;
1184
1185   rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
1186   rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
1187   rmp->total_pkts = ntohl (s->total_pkts);
1188   rmp->context = context;
1189   if (nat44_ei_is_unk_proto_session (s))
1190     {
1191       rmp->outside_port = 0;
1192       rmp->inside_port = 0;
1193       rmp->protocol = ntohs (s->in2out.port);
1194     }
1195   else
1196     {
1197       rmp->outside_port = s->out2in.port;
1198       rmp->inside_port = s->in2out.port;
1199       rmp->protocol = ntohs (nat_proto_to_ip_proto (s->nat_proto));
1200     }
1201   vl_api_send_msg (reg, (u8 *) rmp);
1202 }
1203
1204 static void
1205 vl_api_nat44_ei_user_session_dump_t_handler (
1206   vl_api_nat44_ei_user_session_dump_t *mp)
1207 {
1208   vl_api_registration_t *reg;
1209   nat44_ei_main_t *nm = &nat44_ei_main;
1210   nat44_ei_main_per_thread_data_t *tnm;
1211   nat44_ei_session_t *s;
1212   clib_bihash_kv_8_8_t key, value;
1213   nat44_ei_user_key_t ukey;
1214   nat44_ei_user_t *u;
1215   u32 session_index, head_index, elt_index;
1216   dlist_elt_t *head, *elt;
1217   ip4_header_t ip;
1218
1219   reg = vl_api_client_index_to_registration (mp->client_index);
1220   if (!reg)
1221     return;
1222
1223   clib_memcpy (&ukey.addr, mp->ip_address, 4);
1224   ip.src_address.as_u32 = ukey.addr.as_u32;
1225   ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
1226   key.key = ukey.as_u64;
1227   if (nm->num_workers > 1)
1228     tnm = vec_elt_at_index (
1229       nm->per_thread_data,
1230       nat44_ei_get_in2out_worker_index (&ip, ukey.fib_index, 0));
1231   else
1232     tnm = vec_elt_at_index (nm->per_thread_data, nm->num_workers);
1233
1234   if (clib_bihash_search_8_8 (&tnm->user_hash, &key, &value))
1235     return;
1236   u = pool_elt_at_index (tnm->users, value.value);
1237   if (!u->nsessions && !u->nstaticsessions)
1238     return;
1239
1240   head_index = u->sessions_per_user_list_head_index;
1241   head = pool_elt_at_index (tnm->list_pool, head_index);
1242   elt_index = head->next;
1243   elt = pool_elt_at_index (tnm->list_pool, elt_index);
1244   session_index = elt->value;
1245   while (session_index != ~0)
1246     {
1247       s = pool_elt_at_index (tnm->sessions, session_index);
1248
1249       send_nat44_ei_user_session_details (s, reg, mp->context);
1250
1251       elt_index = elt->next;
1252       elt = pool_elt_at_index (tnm->list_pool, elt_index);
1253       session_index = elt->value;
1254     }
1255 }
1256
1257 static void
1258 vl_api_nat44_ei_del_session_t_handler (vl_api_nat44_ei_del_session_t *mp)
1259 {
1260   nat44_ei_main_t *nm = &nat44_ei_main;
1261   vl_api_nat44_ei_del_session_reply_t *rmp;
1262   ip4_address_t addr, eh_addr;
1263   u16 port;
1264   u32 vrf_id;
1265   int rv = 0;
1266   u8 is_in;
1267   nat_protocol_t proto;
1268
1269   memcpy (&addr.as_u8, mp->address, 4);
1270   port = mp->port;
1271   vrf_id = clib_net_to_host_u32 (mp->vrf_id);
1272   proto = ip_proto_to_nat_proto (mp->protocol);
1273   memcpy (&eh_addr.as_u8, mp->ext_host_address, 4);
1274
1275   // is session inside ?
1276   is_in = mp->flags & NAT44_EI_IF_INSIDE;
1277
1278   rv = nat44_ei_del_session (nm, &addr, port, proto, vrf_id, is_in);
1279
1280   REPLY_MACRO (VL_API_NAT44_EI_DEL_SESSION_REPLY);
1281 }
1282
1283 static void
1284 vl_api_nat44_ei_forwarding_enable_disable_t_handler (
1285   vl_api_nat44_ei_forwarding_enable_disable_t *mp)
1286 {
1287   nat44_ei_main_t *nm = &nat44_ei_main;
1288   vl_api_nat44_ei_forwarding_enable_disable_reply_t *rmp;
1289   int rv = 0;
1290   u32 *ses_to_be_removed = 0, *ses_index;
1291   nat44_ei_main_per_thread_data_t *tnm;
1292   nat44_ei_session_t *s;
1293
1294   nm->forwarding_enabled = mp->enable != 0;
1295
1296   if (mp->enable == 0)
1297     {
1298       vec_foreach (tnm, nm->per_thread_data)
1299         {
1300           vec_foreach (ses_index, ses_to_be_removed)
1301             {
1302               s = pool_elt_at_index (tnm->sessions, ses_index[0]);
1303               nat44_ei_free_session_data (nm, s, tnm - nm->per_thread_data, 0);
1304               nat44_ei_delete_session (nm, s, tnm - nm->per_thread_data);
1305             }
1306
1307           vec_free (ses_to_be_removed);
1308         }
1309     }
1310
1311   REPLY_MACRO (VL_API_NAT44_EI_FORWARDING_ENABLE_DISABLE_REPLY);
1312 }
1313
1314 static void
1315 vl_api_nat44_ei_set_fq_options_t_handler (vl_api_nat44_ei_set_fq_options_t *mp)
1316 {
1317   nat44_ei_main_t *nm = &nat44_ei_main;
1318   vl_api_nat44_ei_set_fq_options_reply_t *rmp;
1319   int rv = 0;
1320   u32 frame_queue_nelts = ntohl (mp->frame_queue_nelts);
1321   rv = nat44_ei_set_frame_queue_nelts (frame_queue_nelts);
1322   REPLY_MACRO (VL_API_NAT44_EI_SET_FQ_OPTIONS_REPLY);
1323 }
1324
1325 static void
1326 vl_api_nat44_ei_show_fq_options_t_handler (
1327   vl_api_nat44_ei_show_fq_options_t *mp)
1328 {
1329   nat44_ei_main_t *nm = &nat44_ei_main;
1330   vl_api_nat44_ei_show_fq_options_reply_t *rmp;
1331   int rv = 0;
1332   /* clang-format off */
1333   REPLY_MACRO2_ZERO (VL_API_NAT44_EI_SHOW_FQ_OPTIONS_REPLY,
1334   ({
1335     rmp->frame_queue_nelts = htonl (nm->frame_queue_nelts);
1336   }));
1337   /* clang-format on */
1338 }
1339
1340 /* API definitions */
1341 #include <vnet/format_fns.h>
1342 #include <nat/nat44-ei/nat44_ei.api.c>
1343
1344 /* Set up the API message handling tables */
1345 clib_error_t *
1346 nat44_ei_api_hookup (vlib_main_t *vm)
1347 {
1348   nat44_ei_main_t *nm = &nat44_ei_main;
1349   nm->msg_id_base = setup_message_id_table ();
1350   return 0;
1351 }
1352
1353 /*
1354  * fd.io coding-style-patch-verification: ON
1355  *
1356  * Local Variables:
1357  * eval: (c-set-style "gnu")
1358  * End:
1359  */