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authorJan Gelety <jgelety@cisco.com>2019-08-07 21:21:58 +0200
committerJan Gelety <jgelety@cisco.com>2019-08-07 21:21:58 +0200
commit3e664d4a46aecf847659df2fe3d2572697b582a7 (patch)
tree2884b477d5932c5feeb52472ec56978b2e724562 /docs/lab
parentf187d0b4f9cfa3b980a94b1f56e828b183367c15 (diff)
FIX: if MAC address must be updated after AVF interface creation
Change-Id: I9fc26a7d1bf8d9eed620173a73febe3d874a1351 Signed-off-by: Jan Gelety <jgelety@cisco.com>
Diffstat (limited to 'docs/lab')
0 files changed, 0 insertions, 0 deletions
d='n311' href='#n311'>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
/*
 * Copyright (c) 2016 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 <vlib/vlib.h>

#include <vppinfra/serialize.h>

/* serialized representation of state strings */

#define foreach_state_string_code               \
_(STATE_DONE, "done")                           \
_(STATE_DISABLED, "disabled")                   \
_(STATE_TIME_WAIT, "time wait")                 \
_(STATE_EVENT_WAIT, "event wait")               \
_(STATE_ANY_WAIT, "any wait")                   \
_(STATE_POLLING, "polling")                     \
_(STATE_INTERRUPT_WAIT, "interrupt wait")       \
_(STATE_INTERNAL, "internal")

typedef enum
{
#define _(a,b) a,
  foreach_state_string_code
#undef _
} state_string_enum_t;

static char *state_strings[] = {
#define _(a,b) b,
  foreach_state_string_code
#undef _
};

/*
 * Serialize a vlib_node_main_t. Appends the result to vector.
 * Pass 0 to create a new vector, use vec_reset_length(vector)
 * to recycle a vector / avoid memory allocation, etc.
 * Switch heaps before/after to serialize into API client shared memory.
 */
u8 *
vlib_node_serialize (vlib_main_t * vm, vlib_node_t *** node_dups, u8 * vector,
		     int include_nexts, int include_stats)
{
  serialize_main_t _sm, *sm = &_sm;
  vlib_node_t *n;
  vlib_node_t **nodes;
  u8 *namep;
  u32 name_bytes;
  uword i, j, k;
  u64 l, v, c, d;
  state_string_enum_t state_code;

  serialize_open_vector (sm, vector);
  serialize_likely_small_unsigned_integer (sm, vec_len (node_dups));

  for (j = 0; j < vec_len (node_dups); j++)
    {
      nodes = node_dups[j];

      serialize_likely_small_unsigned_integer (sm, vec_len (nodes));

      for (i = 0; i < vec_len (nodes); i++)
	{
	  n = nodes[i];

	  l = n->stats_total.clocks - n->stats_last_clear.clocks;
	  v = n->stats_total.vectors - n->stats_last_clear.vectors;
	  c = n->stats_total.calls - n->stats_last_clear.calls;
	  d = n->stats_total.suspends - n->stats_last_clear.suspends;

	  state_code = STATE_INTERNAL;

	  if (n->type == VLIB_NODE_TYPE_PROCESS)
	    {
	      vlib_process_t *p = vlib_get_process_from_node (vm, n);

	      switch (p->flags
		      & (VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK
			 | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT))
		{
		default:
		  if (!(p->flags & VLIB_PROCESS_IS_RUNNING))
		    state_code = STATE_DONE;
		  break;

		case VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK:
		  state_code = STATE_TIME_WAIT;
		  break;

		case VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT:
		  state_code = STATE_EVENT_WAIT;
		  break;

		case (VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK):
		  state_code =
		    STATE_ANY_WAIT;
		  break;
		}
	    }
	  else if (n->type != VLIB_NODE_TYPE_INTERNAL)
	    {
	      state_code = STATE_POLLING;
	      if (n->state == VLIB_NODE_STATE_DISABLED)
		state_code = STATE_DISABLED;
	      else if (n->state == VLIB_NODE_STATE_INTERRUPT)
		state_code = STATE_INTERRUPT_WAIT;
	    }

	  /* See unserialize_cstring */
	  name_bytes = vec_len (n->name);
	  serialize_likely_small_unsigned_integer (sm, name_bytes);
	  namep = serialize_get (sm, name_bytes);
	  memcpy (namep, n->name, name_bytes);

	  serialize_likely_small_unsigned_integer (sm, (u64) state_code);
	  serialize_likely_small_unsigned_integer (sm, n->type);
	  serialize_likely_small_unsigned_integer (sm, n->flags);

	  if (include_nexts)
	    {
	      serialize_likely_small_unsigned_integer
		(sm, vec_len (n->next_nodes));
	      for (k = 0; k < vec_len (n->next_nodes); k++)
		serialize_likely_small_unsigned_integer (sm,
							 n->next_nodes[k]);
	    }
	  else
	    serialize_likely_small_unsigned_integer (sm, 0);

	  if (include_stats)
	    {
	      /* stats present */
	      serialize_likely_small_unsigned_integer (sm, 1);
	      /* total clocks */
	      serialize_integer (sm, l, 8);
	      /* Total calls */
	      serialize_integer (sm, c, 8);
	      /* Total vectors */
	      serialize_integer (sm, v, 8);
	      /* Total suspends */
	      serialize_integer (sm, d, 8);
	    }
	  else			/* no stats */
	    serialize_likely_small_unsigned_integer (sm, 0);
	}
    }
  return (serialize_close_vector (sm));
}

vlib_node_t ***
vlib_node_unserialize (u8 * vector)
{
  serialize_main_t _sm, *sm = &_sm;
  u32 nnodes, nnexts;
  u32 nstat_vms;
  vlib_node_t *node;
  vlib_node_t **nodes;
  vlib_node_t ***nodes_by_thread = 0;
  int i, j, k;
  u64 l, v, c, d;
  state_string_enum_t state_code;
  int stats_present;

  serialize_open_vector (sm, vector);

  nstat_vms = unserialize_likely_small_unsigned_integer (sm);

  vec_validate (nodes_by_thread, nstat_vms - 1);
  _vec_len (nodes_by_thread) = 0;

  for (i = 0; i < nstat_vms; i++)
    {
      nnodes = unserialize_likely_small_unsigned_integer (sm);

      nodes = 0;
      vec_validate (nodes, nnodes - 1);
      vec_add1 (nodes_by_thread, nodes);

      for (j = 0; j < nnodes; j++)
	{
	  node = 0;
	  vec_validate (node, 0);
	  nodes[j] = node;

	  unserialize_cstring (sm, (char **) &(node->name));
	  state_code = unserialize_likely_small_unsigned_integer (sm);
	  node->state_string = (u8 *) state_strings[state_code];

	  node->type = unserialize_likely_small_unsigned_integer (sm);
	  node->flags = unserialize_likely_small_unsigned_integer (sm);
	  nnexts = unserialize_likely_small_unsigned_integer (sm);
	  if (nnexts > 0)
	    vec_validate (node->next_nodes, nnexts - 1);
	  for (k = 0; k < nnexts; k++)
	    node->next_nodes[k] =
	      unserialize_likely_small_unsigned_integer (sm);

	  stats_present = unserialize_likely_small_unsigned_integer (sm);

	  if (stats_present)
	    {
	      /* total clocks */
	      unserialize_integer (sm, &l, 8);
	      node->stats_total.clocks = l;
	      node->stats_last_clear.clocks = 0;

	      /* Total calls */
	      unserialize_integer (sm, &c, 8);
	      node->stats_total.calls = c;

	      /* Total vectors */
	      unserialize_integer (sm, &v, 8);
	      node->stats_total.vectors = v;

	      /* Total suspends */
	      unserialize_integer (sm, &d, 8);
	      node->stats_total.suspends = d;
	    }
	}
    }
  return nodes_by_thread;
}

#if TEST_CODE

static clib_error_t *
test_node_serialize_command_fn (vlib_main_t * vm,
				unformat_input_t * input,
				vlib_cli_command_t * cmd)
{
  vlib_node_main_t *nm = &vm->node_main;
  u8 *vector = 0;
  vlib_node_t ***nodes_by_thread;
  vlib_node_t **nodes;
  vlib_node_t *node;
  vlib_node_t *next_node;
  int i, j, k;
  u32 max_threads = (u32) ~ 0;
  int include_nexts = 0;
  int include_stats = 0;

  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (input, "max-threads %d", &max_threads))
	;
      else if (unformat (input, "stats"))
	include_stats = 1;
      else if (unformat (input, "nexts"))
	include_nexts = 1;
      else
	break;
    }

  /*
   * Keep the number of memcpy ops to a minimum (e.g. 1).
   * The current size of the serialized vector is
   * slightly under 4K.
   */
  vec_validate (vector, 16383);
  vec_reset_length (vector);

  vector = vlib_node_serialize (nm, vector, max_threads,
				include_nexts, include_stats);

  vlib_cli_output (vm, "result vector %d bytes", vec_len (vector));

  nodes_by_thread = vlib_node_unserialize (vector);

  vec_free (vector);

  for (i = 0; i < vec_len (nodes_by_thread); i++)
    {
      nodes = nodes_by_thread[i];

      vlib_cli_output (vm, "thread %d", i);

      for (j = 0; j < vec_len (nodes); j++)
	{
	  node = nodes[j];

	  vlib_cli_output (vm, "[%d] %s state %s", j, node->name,
			   node->state_string);

	  vlib_cli_output
	    (vm, "    clocks %lld calls %lld suspends"
	     " %lld vectors %lld",
	     node->stats_total.clocks,
	     node->stats_total.calls,
	     node->stats_total.suspends, node->stats_total.vectors);

	  for (k = 0; k < vec_len (node->next_nodes); k++)
	    {
	      if (node->next_nodes[k] != ~0)
		{
		  next_node = nodes[node->next_nodes[k]];
		  vlib_cli_output (vm, "  [%d] %s", k, next_node->name);
		}
	    }
	}
    }

  for (j = 0; j < vec_len (nodes_by_thread); j++)
    {
      nodes = nodes_by_thread[j];

      for (i = 0; i < vec_len (nodes); i++)
	{
	  vec_free (nodes[i]->name);
	  vec_free (nodes[i]->next_nodes);
	  vec_free (nodes[i]);
	}
      vec_free (nodes);
    }
  vec_free (nodes_by_thread);

  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (test_node_serialize_node, static) = {
    .path = "test node serialize",
    .short_help = "test node serialize [max-threads NN] nexts stats",
    .function = test_node_serialize_command_fn,
};
/* *INDENT-ON* */
#endif

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