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-rw-r--r--src/vnet/lisp-cp/control.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/vnet/lisp-cp/control.h b/src/vnet/lisp-cp/control.h
index 0e63b3c7454..d030e588821 100644
--- a/src/vnet/lisp-cp/control.h
+++ b/src/vnet/lisp-cp/control.h
@@ -238,6 +238,9 @@ typedef struct
/** Per thread pool of records shared with thread0 */
map_records_arg_t **map_records_args_pool;
+ /* TTL used for all mappings when registering */
+ u32 map_register_ttl;
+
/* commodity */
ip4_main_t *im4;
ip6_main_t *im6;
@@ -362,6 +365,8 @@ int vnet_lisp_add_del_l2_arp_entry (gid_address_t * key, u8 * mac, u8 is_add);
u32 *vnet_lisp_l2_arp_bds_get (void);
lisp_api_l2_arp_entry_t *vnet_lisp_l2_arp_entries_get_by_bd (u32 bd);
int vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add);
+int vnet_lisp_map_register_set_ttl (u32 ttl);
+u32 vnet_lisp_map_register_get_ttl (void);
map_records_arg_t *parse_map_reply (vlib_buffer_t * b);
138' href='#n138'>138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 
/*
 * Copyright (c) 2017 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vnet/udp/udp_encap.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
#include <vnet/dpo/drop_dpo.h>

/**
 * Registered DPO types for the IP header encapsulated, v4 or v6.
 */
dpo_type_t udp_encap_dpo_types[FIB_PROTOCOL_MAX];

/**
 * Hash DB to map from client ID to VPP index.
 */
uword *udp_encap_db;

/**
 * Pool of encaps
 */
udp_encap_t *udp_encap_pool;

/**
 * Stats for each UDP encap object
 */
vlib_combined_counter_main_t udp_encap_counters;

static udp_encap_t *
udp_encap_get_w_id (u32 id)
{
  udp_encap_t *ue = NULL;
  index_t uei;

  uei = udp_encap_find (id);

  if (INDEX_INVALID != uei)
    {
      ue = udp_encap_get (uei);
    }

  return (ue);
}

static void
udp_encap_restack (udp_encap_t * ue)
{
  dpo_stack (udp_encap_dpo_types[ue->ue_ip_proto],
	     fib_proto_to_dpo (ue->ue_ip_proto),
	     &ue->ue_dpo,
	     fib_entry_contribute_ip_forwarding (ue->ue_fib_entry_index));
}

index_t
udp_encap_add_and_lock (u32 id,
			fib_protocol_t proto,
			index_t fib_index,
			const ip46_address_t * src_ip,
			const ip46_address_t * dst_ip,
			u16 src_port,
			u16 dst_port, udp_encap_fixup_flags_t flags)
{
  udp_encap_t *ue;
  index_t uei;

  uei = udp_encap_find (id);

  if (INDEX_INVALID == uei)
    {
      u8 pfx_len = 0;

      pool_get_aligned (udp_encap_pool, ue, CLIB_CACHE_LINE_BYTES);
      uei = ue - udp_encap_pool;

      vlib_validate_combined_counter (&(udp_encap_counters), uei);
      vlib_zero_combined_counter (&(udp_encap_counters), uei);

      hash_set (udp_encap_db, id, uei);

      fib_node_init (&ue->ue_fib_node, FIB_NODE_TYPE_UDP_ENCAP);
      fib_node_lock (&ue->ue_fib_node);
      ue->ue_fib_index = fib_index;
      ue->ue_flags = flags;
      ue->ue_id = id;
      ue->ue_ip_proto = proto;

      switch (proto)
	{
	case FIB_PROTOCOL_IP4:
	  pfx_len = 32;
	  ue->ue_hdrs.ip4.ue_ip4.ip_version_and_header_length = 0x45;
	  ue->ue_hdrs.ip4.ue_ip4.ttl = 254;
	  ue->ue_hdrs.ip4.ue_ip4.protocol = IP_PROTOCOL_UDP;
	  ue->ue_hdrs.ip4.ue_ip4.src_address.as_u32 = src_ip->ip4.as_u32;
	  ue->ue_hdrs.ip4.ue_ip4.dst_address.as_u32 = dst_ip->ip4.as_u32;
	  ue->ue_hdrs.ip4.ue_ip4.checksum =
	    ip4_header_checksum (&ue->ue_hdrs.ip4.ue_ip4);
	  ue->ue_hdrs.ip4.ue_udp.src_port = clib_host_to_net_u16 (src_port);
	  ue->ue_hdrs.ip4.ue_udp.dst_port = clib_host_to_net_u16 (dst_port);

	  break;
	case FIB_PROTOCOL_IP6:
	  pfx_len = 128;
	  ue->ue_hdrs.ip6.ue_ip6.ip_version_traffic_class_and_flow_label =
	    clib_host_to_net_u32 (6 << 28);
	  ue->ue_hdrs.ip6.ue_ip6.hop_limit = 255;
	  ue->ue_hdrs.ip6.ue_ip6.protocol = IP_PROTOCOL_UDP;
	  ue->ue_hdrs.ip6.ue_ip6.src_address.as_u64[0] =
	    src_ip->ip6.as_u64[0];
	  ue->ue_hdrs.ip6.ue_ip6.src_address.as_u64[1] =
	    src_ip->ip6.as_u64[1];
	  ue->ue_hdrs.ip6.ue_ip6.dst_address.as_u64[0] =
	    dst_ip->ip6.as_u64[0];
	  ue->ue_hdrs.ip6.ue_ip6.dst_address.as_u64[1] =
	    dst_ip->ip6.as_u64[1];
	  ue->ue_hdrs.ip6.ue_udp.src_port = clib_host_to_net_u16 (src_port);
	  ue->ue_hdrs.ip6.ue_udp.dst_port = clib_host_to_net_u16 (dst_port);

	  break;
	default:
	  ASSERT (0);
	}

      /*
       * track the destination address
       */
      fib_prefix_t dst_pfx = {
	.fp_proto = proto,
	.fp_len = pfx_len,
	.fp_addr = *dst_ip,
      };

      ue->ue_fib_entry_index =
	fib_table_entry_special_add (fib_index,
				     &dst_pfx,
				     FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE);
      ue->ue_fib_sibling =
	fib_entry_child_add (ue->ue_fib_entry_index,
			     FIB_NODE_TYPE_UDP_ENCAP, uei);

      udp_encap_restack (ue);
    }
  else
    {
      /*
       * existing entry. updates not supported yet
       */
      uei = INDEX_INVALID;
    }
  return (uei);
}

void
udp_encap_contribute_forwarding (u32 id, dpo_proto_t proto, dpo_id_t * dpo)
{
  index_t uei;

  uei = udp_encap_find (id);

  if (INDEX_INVALID == uei)
    {
      dpo_copy (dpo, drop_dpo_get (proto));
    }
  else
    {
      udp_encap_t *ue;

      ue = udp_encap_get (uei);

      dpo_set (dpo, udp_encap_dpo_types[ue->ue_ip_proto], proto, uei);
    }
}

index_t
udp_encap_find (u32 id)
{
  uword *p;

  p = hash_get (udp_encap_db, id);

  if (NULL != p)
    return p[0];

  return INDEX_INVALID;
}

void
udp_encap_lock (u32 id)
{
  udp_encap_t *ue;

  ue = udp_encap_get_w_id (id);

  if (NULL != ue)
    {
      fib_node_lock (&ue->ue_fib_node);
    }
}

void
udp_encap_unlock_w_index (index_t uei)
{
  udp_encap_t *ue;

  if (INDEX_INVALID == uei)
    {
      return;
    }

  ue = udp_encap_get (uei);

  if (NULL != ue)
    {
      fib_node_unlock (&ue->ue_fib_node);
    }
}

void
udp_encap_unlock (u32 id)
{
  udp_encap_t *ue;

  ue = udp_encap_get_w_id (id);

  if (NULL != ue)
    {
      fib_node_unlock (&ue->ue_fib_node);
    }
}

static void
udp_encap_dpo_lock (dpo_id_t * dpo)
{
  udp_encap_t *ue;

  ue = udp_encap_get (dpo->dpoi_index);

  fib_node_lock (&ue->ue_fib_node);
}

static void
udp_encap_dpo_unlock (dpo_id_t * dpo)
{
  udp_encap_t *ue;

  ue = udp_encap_get (dpo->dpoi_index);

  fib_node_unlock (&ue->ue_fib_node);
}

static u8 *
format_udp_encap_i (u8 * s, va_list * args)
{
  index_t uei = va_arg (*args, index_t);
  u32 indent = va_arg (*args, u32);
  u32 details = va_arg (*args, u32);
  vlib_counter_t to;
  udp_encap_t *ue;

  ue = udp_encap_get (uei);

  // FIXME
  s = format (s, "udp-ecap:[%d]: id:%d ip-fib-index:%d ",
	      uei, ue->ue_id, ue->ue_fib_index);
  if (FIB_PROTOCOL_IP4 == ue->ue_ip_proto)
    {
      s = format (s, "ip:[src:%U, dst:%U] udp:[src:%d, dst:%d]",
		  format_ip4_address,
		  &ue->ue_hdrs.ip4.ue_ip4.src_address,
		  format_ip4_address,
		  &ue->ue_hdrs.ip4.ue_ip4.dst_address,
		  clib_net_to_host_u16 (ue->ue_hdrs.ip4.ue_udp.src_port),
		  clib_net_to_host_u16 (ue->ue_hdrs.ip4.ue_udp.dst_port));
    }
  else
    {
      s = format (s, "ip:[src:%U, dst:%U] udp:[src:%d dst:%d]",
		  format_ip6_address,
		  &ue->ue_hdrs.ip6.ue_ip6.src_address,
		  format_ip6_address,
		  &ue->ue_hdrs.ip6.ue_ip6.dst_address,
		  clib_net_to_host_u16 (ue->ue_hdrs.ip6.ue_udp.src_port),
		  clib_net_to_host_u16 (ue->ue_hdrs.ip6.ue_udp.dst_port));
    }
  vlib_get_combined_counter (&(udp_encap_counters), uei, &to);
  s = format (s, " to:[%Ld:%Ld]]", to.packets, to.bytes);

  if (details)
    {
      s = format (s, " locks:%d", ue->ue_fib_node.fn_locks);
      s = format (s, "\n%UStacked on:", format_white_space, indent + 1);
      s = format (s, "\n%U%U",
		  format_white_space, indent + 2,
		  format_dpo_id, &ue->ue_dpo, indent + 3);
    }
  return (s);
}

void
udp_encap_get_stats (index_t uei, u64 * packets, u64 * bytes)
{
  vlib_counter_t to;

  vlib_get_combined_counter (&(udp_encap_counters), uei, &to);

  *packets = to.packets;
  *bytes = to.bytes;
}

static u8 *
format_udp_encap_dpo (u8 * s, va_list * args)
{
  index_t uei = va_arg (*args, index_t);
  u32 indent = va_arg (*args, u32);

  return (format (s, "%U", format_udp_encap_i, uei, indent, 1));
}

u8 *
format_udp_encap (u8 * s, va_list * args)
{
  u32 id = va_arg (*args, u32);
  u32 details = va_arg (*args, u32);
  index_t uei;

  uei = udp_encap_find (id);

  if (INDEX_INVALID == uei)
    {
      return (format (s, "Invalid udp-encap ID: %d", id));
    }

  return (format (s, "%U", format_udp_encap_i, uei, 0, details));
}

static udp_encap_t *
udp_encap_from_fib_node (fib_node_t * node)
{
  ASSERT (FIB_NODE_TYPE_UDP_ENCAP == node->fn_type);
  return ((udp_encap_t *) (((char *) node) -
			   STRUCT_OFFSET_OF (udp_encap_t, ue_fib_node)));
}

/**
 * Function definition to backwalk a FIB node
 */
static fib_node_back_walk_rc_t
udp_encap_fib_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx)
{
  udp_encap_restack (udp_encap_from_fib_node (node));

  return (FIB_NODE_BACK_WALK_CONTINUE);
}

/**
 * Function definition to get a FIB node from its index
 */
static fib_node_t *
udp_encap_fib_node_get (fib_node_index_t index)
{
  udp_encap_t *ue;

  ue = pool_elt_at_index (udp_encap_pool, index);

  return (&ue->ue_fib_node);
}

/**
 * Function definition to inform the FIB node that its last lock has gone.
 */
static void
udp_encap_fib_last_lock_gone (fib_node_t * node)
{
  udp_encap_t *ue;

  ue = udp_encap_from_fib_node (node);

    /**
     * reset the stacked DPO to unlock it
     */
  dpo_reset (&ue->ue_dpo);
  hash_unset (udp_encap_db, ue->ue_id);

  fib_entry_child_remove (ue->ue_fib_entry_index, ue->ue_fib_sibling);
  fib_table_entry_delete_index (ue->ue_fib_entry_index, FIB_SOURCE_RR);


  pool_put (udp_encap_pool, ue);
}

const static char *const udp4_encap_ip4_nodes[] = {
  "udp4-encap",
  NULL,
};

const static char *const udp4_encap_ip6_nodes[] = {
  "udp4-encap",
  NULL,
};

const static char *const udp4_encap_mpls_nodes[] = {
  "udp4-encap",
  NULL,
};

const static char *const udp4_encap_bier_nodes[] = {
  "udp4-encap",
  NULL,
};

const static char *const udp6_encap_ip4_nodes[] = {
  "udp6-encap",
  NULL,
};

const static char *const udp6_encap_ip6_nodes[] = {
  "udp6-encap",
  NULL,
};

const static char *const udp6_encap_mpls_nodes[] = {
  "udp6-encap",
  NULL,
};

const static char *const udp6_encap_bier_nodes[] = {
  "udp6-encap",
  NULL,
};

const static char *const *const udp4_encap_nodes[DPO_PROTO_NUM] = {
  [DPO_PROTO_IP4] = udp4_encap_ip4_nodes,
  [DPO_PROTO_IP6] = udp4_encap_ip6_nodes,
  [DPO_PROTO_MPLS] = udp4_encap_mpls_nodes,
  [DPO_PROTO_BIER] = udp4_encap_bier_nodes,
};

const static char *const *const udp6_encap_nodes[DPO_PROTO_NUM] = {
  [DPO_PROTO_IP4] = udp6_encap_ip4_nodes,
  [DPO_PROTO_IP6] = udp6_encap_ip6_nodes,
  [DPO_PROTO_MPLS] = udp6_encap_mpls_nodes,
  [DPO_PROTO_BIER] = udp6_encap_bier_nodes,
};

/*
 * Virtual function table registered by UDP encaps
 * for participation in the FIB object graph.
 */
const static fib_node_vft_t udp_encap_fib_vft = {
  .fnv_get = udp_encap_fib_node_get,
  .fnv_last_lock = udp_encap_fib_last_lock_gone,
  .fnv_back_walk = udp_encap_fib_back_walk,
};

const static dpo_vft_t udp_encap_dpo_vft = {
  .dv_lock = udp_encap_dpo_lock,
  .dv_unlock = udp_encap_dpo_unlock,
  .dv_format = format_udp_encap_dpo,
};

clib_error_t *
udp_encap_init (vlib_main_t * vm)
{
  udp_encap_db = hash_create (0, sizeof (index_t));

  fib_node_register_type (FIB_NODE_TYPE_UDP_ENCAP, &udp_encap_fib_vft);

  udp_encap_dpo_types[FIB_PROTOCOL_IP4] =
    dpo_register_new_type (&udp_encap_dpo_vft, udp4_encap_nodes);
  udp_encap_dpo_types[FIB_PROTOCOL_IP6] =
    dpo_register_new_type (&udp_encap_dpo_vft, udp6_encap_nodes);

  return (NULL);
}

VLIB_INIT_FUNCTION (udp_encap_init);

clib_error_t *
udp_encap_cli (vlib_main_t * vm,
	       unformat_input_t * main_input, vlib_cli_command_t * cmd)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  clib_error_t *error = NULL;
  ip46_address_t src_ip, dst_ip;
  u32 table_id, ue_id;
  u32 src_port, dst_port;
  udp_encap_fixup_flags_t flags;
  fib_protocol_t fproto;
  u8 is_del;

  is_del = 0;
  table_id = 0;
  flags = UDP_ENCAP_FIXUP_NONE;
  fproto = FIB_PROTOCOL_MAX;
  dst_port = 0;
  ue_id = ~0;

  /* Get a line of input. */
  if (!unformat_user (main_input, unformat_line_input, line_input))
    return 0;

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (line_input, "id %d", &ue_id))
	;
      else if (unformat (line_input, "add"))
	is_del = 0;
      else if (unformat (line_input, "del"))
	is_del = 1;
      else if (unformat (line_input, "%U %U",
			 unformat_ip4_address,
			 &src_ip.ip4, unformat_ip4_address, &dst_ip.ip4))
	fproto = FIB_PROTOCOL_IP4;
      else if (unformat (line_input, "%U %U",
			 unformat_ip6_address,
			 &src_ip.ip6, unformat_ip6_address, &dst_ip.ip6))
	fproto = FIB_PROTOCOL_IP6;
      else if (unformat (line_input, "%d %d", &src_port, &dst_port))
	;
      else if (unformat (line_input, "%d", &dst_port))
	;
      else if (unformat (line_input, "table-id %d", &table_id))
	;
      else if (unformat (line_input, "src-port-is-entropy"))
	flags |= UDP_ENCAP_FIXUP_UDP_SRC_PORT_ENTROPY;
      else
	{
	  error = unformat_parse_error (line_input);
	  goto done;
	}
    }

  if (~0 == ue_id)
    {
      error =
	clib_error_return (0, "An ID for the UDP encap instance is required");
      goto done;
    }

  if (!is_del && fproto != FIB_PROTOCOL_MAX)
    {
      u32 fib_index;
      index_t uei;

      fib_index = fib_table_find (fproto, table_id);

      if (~0 == fib_index)
	{
	  error = clib_error_return (0, "Nonexistent table id %d", table_id);
	  goto done;
	}

      uei = udp_encap_add_and_lock (ue_id, fproto, fib_index,
				    &src_ip, &dst_ip,
				    src_port, dst_port, flags);

      if (INDEX_INVALID == uei)
	{
	  error =
	    clib_error_return (0, "update to existing encap not supported %d",
			       ue_id);
	  goto done;
	}
    }
  else if (is_del)
    {
      udp_encap_unlock (ue_id);
    }
  else
    {
      error =
	clib_error_return (0,
			   "Some IP addresses would be usefull, don't you think?",
			   ue_id);
    }

done:
  unformat_free (line_input);
  return error;
}

void
udp_encap_walk (udp_encap_walk_cb_t cb, void *ctx)
{
  index_t uei;

  /* *INDENT-OFF* */
  pool_foreach_index(uei, udp_encap_pool,
  ({
    if (WALK_STOP == cb(uei, ctx))
      break;
  }));
  /* *INDENT-ON* */
}

clib_error_t *
udp_encap_show (vlib_main_t * vm,
		unformat_input_t * input, vlib_cli_command_t * cmd)
{
  u32 ue_id;

  ue_id = ~0;

  /* Get a line of input. */
  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (input, "%d", &ue_id))
	;
      else
	return clib_error_return (0, "unknown input `%U'",
				  format_unformat_error, input);
    }

  if (~0 == ue_id)
    {
      udp_encap_t *ue;

      /* *INDENT-OFF* */
      pool_foreach(ue, udp_encap_pool,
      ({
        vlib_cli_output(vm, "%U", format_udp_encap, ue->ue_id, 0);
      }));
      /* *INDENT-ON* */
    }
  else
    {
      vlib_cli_output (vm, "%U", format_udp_encap, ue_id, 1);
    }

  return NULL;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (udp_encap_add_command, static) = {
  .path = "udp encap",
  .short_help = "udp encap [add|del] <id ID> <src-ip> <dst-ip> [<src-port>] <dst-port>  [src-port-is-entropy] [table-id <table>]",
  .function = udp_encap_cli,
  .is_mp_safe = 1,
};
VLIB_CLI_COMMAND (udp_encap_show_command, static) = {
  .path = "show udp encap",
  .short_help = "show udp encap [ID]",
  .function = udp_encap_show,
  .is_mp_safe = 1,
};
/* *INDENT-ON* */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */