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authorNathan Skrzypczak <nathan.skrzypczak@gmail.com>2019-07-17 10:20:45 +0200
committerFlorin Coras <florin.coras@gmail.com>2019-07-18 18:14:01 +0000
commitcef02be220eff4aa32ec7ff56b1e0a552faa1280 (patch)
tree755229cae4197c86dc3c1d3d1101b364dc4e3f8a
parent630741546192c5a61b4a36a954bd2f3fe2af940a (diff)
session: Refactor invalid session idx/handle
Type: refactor Change-Id: I885d9d2af1674f705339e3e96f87ff766965c9e5 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Diffstat
-rw-r--r--src/plugins/hs_apps/sapi/quic_echo.c3
-rw-r--r--src/vcl/vcl_private.h1
2 files changed, 1 insertions, 3 deletions
diff --git a/src/plugins/hs_apps/sapi/quic_echo.c b/src/plugins/hs_apps/sapi/quic_echo.c
index a0bba575979..f8fc2f05a07 100644
--- a/src/plugins/hs_apps/sapi/quic_echo.c
+++ b/src/plugins/hs_apps/sapi/quic_echo.c
@@ -38,9 +38,6 @@
#include <vpp/api/vpe_all_api_h.h>
#undef vl_printfun
-#define SESSION_INVALID_INDEX ((u32)~0)
-#define SESSION_INVALID_HANDLE ((u64)~0)
-
#define CHECK(expected, result, _fmt, _args...) \
if (expected != result) \
ECHO_FAIL ("expected %d, got %d : " _fmt, expected, result, ##_args);
diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index b19e6b548f3..544b2880fe1 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -341,6 +341,7 @@ typedef struct vppcom_main_t_
extern vppcom_main_t *vcm;
#define VCL_INVALID_SESSION_INDEX ((u32)~0)
+#define VCL_INVALID_SESSION_HANDLE ((u64)~0)
#define VCL_INVALID_SEGMENT_INDEX ((u32)~0)
#define VCL_INVALID_SEGMENT_HANDLE ((u64)~0)
'#n191'>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 
/*
 * Copyright (c) 2018 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 <plugins/gbp/gbp.h>
#include <plugins/gbp/gbp_fwd_dpo.h>
#include <plugins/gbp/gbp_policy_dpo.h>
#include <plugins/gbp/gbp_route_domain.h>

#include <vnet/fib/fib_table.h>
#include <vnet/dpo/load_balance.h>

/**
 * a key for the DB
 */
typedef struct gbp_subnet_key_t_
{
  fib_prefix_t gsk_pfx;
  u32 gsk_fib_index;
} gbp_subnet_key_t;

/**
 * Subnet
 */
typedef struct gbp_subnet_t_
{
  gbp_subnet_key_t *gs_key;
  gbp_subnet_type_t gs_type;
  index_t gs_rd;

  union
  {
    struct
    {
      sclass_t gs_sclass;
      u32 gs_sw_if_index;
    } gs_stitched_external;
    struct
    {
      sclass_t gs_sclass;
    } gs_l3_out;
  };

  fib_node_index_t gs_fei;
} gbp_subnet_t;

/**
 * A DB of the subnets; key={pfx,fib-index}
 */
uword *gbp_subnet_db;

/**
 * pool of subnets
 */
gbp_subnet_t *gbp_subnet_pool;

static index_t
gbp_subnet_db_find (u32 fib_index, const fib_prefix_t * pfx)
{
  gbp_subnet_key_t key = {
    .gsk_pfx = *pfx,
    .gsk_fib_index = fib_index,
  };
  uword *p;

  p = hash_get_mem (gbp_subnet_db, &key);

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

  return (INDEX_INVALID);
}

static void
gbp_subnet_db_add (u32 fib_index, const fib_prefix_t * pfx, gbp_subnet_t * gs)
{
  gbp_subnet_key_t *key;

  key = clib_mem_alloc (sizeof (*key));

  clib_memcpy (&(key->gsk_pfx), pfx, sizeof (*pfx));
  key->gsk_fib_index = fib_index;

  hash_set_mem (gbp_subnet_db, key, (gs - gbp_subnet_pool));

  gs->gs_key = key;
}

static void
gbp_subnet_db_del (gbp_subnet_t * gs)
{
  hash_unset_mem (gbp_subnet_db, gs->gs_key);

  clib_mem_free (gs->gs_key);
  gs->gs_key = NULL;
}


static int
gbp_subnet_transport_add (gbp_subnet_t * gs)
{
  dpo_id_t gfd = DPO_INVALID;
  gbp_route_domain_t *grd;
  fib_protocol_t fproto;

  fproto = gs->gs_key->gsk_pfx.fp_proto;
  grd = gbp_route_domain_get (gs->gs_rd);

  if (~0 == grd->grd_uu_sw_if_index[fproto])
    return (VNET_API_ERROR_INVALID_SW_IF_INDEX);

  gs->gs_fei = fib_table_entry_update_one_path (gs->gs_key->gsk_fib_index,
						&gs->gs_key->gsk_pfx,
						FIB_SOURCE_PLUGIN_HI,
						FIB_ENTRY_FLAG_NONE,
						fib_proto_to_dpo (fproto),
						&ADJ_BCAST_ADDR,
						grd->grd_uu_sw_if_index
						[fproto], ~0, 1, NULL,
						FIB_ROUTE_PATH_FLAG_NONE);

  dpo_reset (&gfd);

  return (0);
}

static int
gbp_subnet_internal_add (gbp_subnet_t * gs)
{
  dpo_id_t gfd = DPO_INVALID;

  gbp_fwd_dpo_add_or_lock (fib_proto_to_dpo (gs->gs_key->gsk_pfx.fp_proto),
			   &gfd);

  gs->gs_fei = fib_table_entry_special_dpo_update (gs->gs_key->gsk_fib_index,
						   &gs->gs_key->gsk_pfx,
						   FIB_SOURCE_PLUGIN_HI,
						   FIB_ENTRY_FLAG_EXCLUSIVE,
						   &gfd);

  dpo_reset (&gfd);

  return (0);
}

static int
gbp_subnet_external_add (gbp_subnet_t * gs, u32 sw_if_index, sclass_t sclass)
{
  dpo_id_t gpd = DPO_INVALID;

  gs->gs_stitched_external.gs_sclass = sclass;
  gs->gs_stitched_external.gs_sw_if_index = sw_if_index;

  gbp_policy_dpo_add_or_lock (fib_proto_to_dpo (gs->gs_key->gsk_pfx.fp_proto),
			      gs->gs_stitched_external.gs_sclass,
			      gs->gs_stitched_external.gs_sw_if_index, &gpd);

  gs->gs_fei = fib_table_entry_special_dpo_update (gs->gs_key->gsk_fib_index,
						   &gs->gs_key->gsk_pfx,
						   FIB_SOURCE_PLUGIN_HI,
						   (FIB_ENTRY_FLAG_EXCLUSIVE |
						    FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT),
						   &gpd);

  dpo_reset (&gpd);

  return (0);
}

static int
gbp_subnet_l3_out_add (gbp_subnet_t * gs, u32 sw_if_index, sclass_t sclass)
{
  dpo_id_t gpd = DPO_INVALID;

  gs->gs_l3_out.gs_sclass = sclass;

  gbp_policy_dpo_add_or_lock (fib_proto_to_dpo (gs->gs_key->gsk_pfx.fp_proto),
			      gs->gs_l3_out.gs_sclass, ~0, &gpd);

  gs->gs_fei = fib_table_entry_special_dpo_add (gs->gs_key->gsk_fib_index,
						&gs->gs_key->gsk_pfx,
						FIB_SOURCE_SPECIAL,
						FIB_ENTRY_FLAG_INTERPOSE,
						&gpd);

  dpo_reset (&gpd);

  return (0);
}

static void
gbp_subnet_del_i (index_t gsi)
{
  gbp_subnet_t *gs;

  gs = pool_elt_at_index (gbp_subnet_pool, gsi);

  if (GBP_SUBNET_L3_OUT == gs->gs_type)
    fib_table_entry_delete_index (gs->gs_fei, FIB_SOURCE_SPECIAL);
  else
    fib_table_entry_delete_index (gs->gs_fei, FIB_SOURCE_PLUGIN_HI);

  gbp_subnet_db_del (gs);
  gbp_route_domain_unlock (gs->gs_rd);

  pool_put (gbp_subnet_pool, gs);
}

int
gbp_subnet_del (u32 rd_id, const fib_prefix_t * pfx)
{
  gbp_route_domain_t *grd;
  index_t gsi, grdi;
  u32 fib_index;

  grdi = gbp_route_domain_find (rd_id);

  if (~0 == grdi)
    return (VNET_API_ERROR_NO_SUCH_FIB);

  grd = gbp_route_domain_get (grdi);
  fib_index = grd->grd_fib_index[pfx->fp_proto];

  gsi = gbp_subnet_db_find (fib_index, pfx);

  if (INDEX_INVALID == gsi)
    return (VNET_API_ERROR_NO_SUCH_ENTRY);

  gbp_subnet_del_i (gsi);

  return (0);
}

int
gbp_subnet_add (u32 rd_id,
		const fib_prefix_t * pfx,
		gbp_subnet_type_t type, u32 sw_if_index, sclass_t sclass)
{
  gbp_route_domain_t *grd;
  index_t grdi, gsi;
  gbp_subnet_t *gs;
  u32 fib_index;
  int rv;

  grdi = gbp_route_domain_find_and_lock (rd_id);

  if (~0 == grdi)
    return (VNET_API_ERROR_NO_SUCH_FIB);

  grd = gbp_route_domain_get (grdi);
  fib_index = grd->grd_fib_index[pfx->fp_proto];

  gsi = gbp_subnet_db_find (fib_index, pfx);

  /*
   * this is an update if the subnet already exists, so remove the old
   */
  if (INDEX_INVALID != gsi)
    gbp_subnet_del_i (gsi);

  rv = -2;

  pool_get (gbp_subnet_pool, gs);

  gs->gs_type = type;
  gs->gs_rd = grdi;
  gbp_subnet_db_add (fib_index, pfx, gs);

  switch (type)
    {
    case GBP_SUBNET_STITCHED_INTERNAL:
      rv = gbp_subnet_internal_add (gs);
      break;
    case GBP_SUBNET_STITCHED_EXTERNAL:
      rv = gbp_subnet_external_add (gs, sw_if_index, sclass);
      break;
    case GBP_SUBNET_TRANSPORT:
      rv = gbp_subnet_transport_add (gs);
      break;
    case GBP_SUBNET_L3_OUT:
      rv = gbp_subnet_l3_out_add (gs, sw_if_index, sclass);
      break;
    }

  return (rv);
}

void
gbp_subnet_walk (gbp_subnet_cb_t cb, void *ctx)
{
  gbp_route_domain_t *grd;
  gbp_subnet_t *gs;
  u32 sw_if_index;
  sclass_t sclass;

  sclass = SCLASS_INVALID;
  sw_if_index = ~0;

  /* *INDENT-OFF* */
  pool_foreach (gs, gbp_subnet_pool,
  ({
    grd = gbp_route_domain_get(gs->gs_rd);

    switch (gs->gs_type)
      {
      case GBP_SUBNET_STITCHED_INTERNAL:
      case GBP_SUBNET_TRANSPORT:
        /* use defaults above */
        break;
      case GBP_SUBNET_STITCHED_EXTERNAL:
        sw_if_index = gs->gs_stitched_external.gs_sw_if_index;
        sclass = gs->gs_stitched_external.gs_sclass;
        break;
      case GBP_SUBNET_L3_OUT:
        sclass = gs->gs_l3_out.gs_sclass;
        break;
      }

    if (WALK_STOP == cb (grd->grd_id, &gs->gs_key->gsk_pfx,
                         gs->gs_type, sw_if_index, sclass, ctx))
      break;
  }));
  /* *INDENT-ON* */
}

typedef enum gsb_subnet_show_flags_t_
{
  GBP_SUBNET_SHOW_BRIEF,
  GBP_SUBNET_SHOW_DETAILS,
} gsb_subnet_show_flags_t;

static u8 *
format_gbp_subnet_type (u8 * s, va_list * args)
{
  gbp_subnet_type_t type = va_arg (*args, gbp_subnet_type_t);

  switch (type)
    {
    case GBP_SUBNET_STITCHED_INTERNAL:
      return (format (s, "stitched-internal"));
    case GBP_SUBNET_STITCHED_EXTERNAL:
      return (format (s, "stitched-external"));
    case GBP_SUBNET_TRANSPORT:
      return (format (s, "transport"));
    case GBP_SUBNET_L3_OUT:
      return (format (s, "l3-out"));
    }

  return (format (s, "unknown"));
}

u8 *
format_gbp_subnet (u8 * s, va_list * args)
{
  index_t gsi = va_arg (*args, index_t);
  gsb_subnet_show_flags_t flags = va_arg (*args, gsb_subnet_show_flags_t);
  gbp_subnet_t *gs;
  u32 table_id;

  gs = pool_elt_at_index (gbp_subnet_pool, gsi);

  table_id = fib_table_get_table_id (gs->gs_key->gsk_fib_index,
				     gs->gs_key->gsk_pfx.fp_proto);

  s = format (s, "[%d] tbl:%d %U %U", gsi, table_id,
	      format_fib_prefix, &gs->gs_key->gsk_pfx,
	      format_gbp_subnet_type, gs->gs_type);

  switch (gs->gs_type)
    {
    case GBP_SUBNET_STITCHED_INTERNAL:
    case GBP_SUBNET_TRANSPORT:
      break;
    case GBP_SUBNET_STITCHED_EXTERNAL:
      s = format (s, " {sclass:%d %U}", gs->gs_stitched_external.gs_sclass,
		  format_vnet_sw_if_index_name,
		  vnet_get_main (), gs->gs_stitched_external.gs_sw_if_index);
      break;
    case GBP_SUBNET_L3_OUT:
      s = format (s, " {sclass:%d}", gs->gs_l3_out.gs_sclass);
      break;
    }

  switch (flags)
    {
    case GBP_SUBNET_SHOW_DETAILS:
      {
	s = format (s, "\n  %U", format_fib_entry, gs->gs_fei,
		    FIB_ENTRY_FORMAT_DETAIL);
      }
    case GBP_SUBNET_SHOW_BRIEF:
      break;
    }
  return (s);
}

static clib_error_t *
gbp_subnet_show (vlib_main_t * vm,
		 unformat_input_t * input, vlib_cli_command_t * cmd)
{
  u32 gsi;

  gsi = INDEX_INVALID;

  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (input, "%d", &gsi))
	;
      else
	break;
    }

  if (INDEX_INVALID != gsi)
    {
      vlib_cli_output (vm, "%U", format_gbp_subnet, gsi,
		       GBP_SUBNET_SHOW_DETAILS);
    }
  else
    {
      /* *INDENT-OFF* */
      pool_foreach_index(gsi, gbp_subnet_pool,
      ({
        vlib_cli_output (vm, "%U", format_gbp_subnet, gsi,
                         GBP_SUBNET_SHOW_BRIEF);
      }));
      /* *INDENT-ON* */
    }

  return (NULL);
}

/*?
 * Show Group Based Policy Subnets
 *
 * @cliexpar
 * @cliexstart{show gbp subnet}
 * @cliexend
 ?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (gbp_subnet_show_node, static) = {
  .path = "show gbp subnet",
  .short_help = "show gbp subnet\n",
  .function = gbp_subnet_show,
};
/* *INDENT-ON* */

static clib_error_t *
gbp_subnet_init (vlib_main_t * vm)
{
  gbp_subnet_db = hash_create_mem (0,
				   sizeof (gbp_subnet_key_t), sizeof (u32));

  return (NULL);
}

VLIB_INIT_FUNCTION (gbp_subnet_init);

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