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authorNeale Ranns <nranns@cisco.com>2017-04-11 09:55:19 -0700
committerFlorin Coras <florin.coras@gmail.com>2017-04-11 19:20:38 +0000
commit107e7d4b5375295e94e01653e3cf064ea6647064 (patch)
tree7bdda8f00b5e29a70436b70bb005dc5c907c837d /src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.c
parent3a7956383420a1d2f5f28b5bd3d3b3f5dda0420d (diff)
Remove usued, redundant and deprecated code from lookup.h
Change-Id: Ic16bc10d0b2877b2afdf052615f9334f31b9519f Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.c')
-rw-r--r--src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.c b/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.c
index 6c04d9af210..88d7d205273 100644
--- a/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.c
+++ b/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.c
@@ -265,8 +265,7 @@ vxlan_gpe_enable_disable_ioam_for_dest (vlib_main_t * vm,
continue;
}
- adj0 =
- ip_get_adjacency (&(ip4_main.lookup_main), adj_index0);
+ adj0 = adj_get (adj_index0);
sw_if_index0 = adj0->rewrite_header.sw_if_index;
if (~0 == sw_if_index0)
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 
/*
 * Copyright (c) 2019 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this
 * 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 <vppinfra/fifo.h>
#include <vppinfra/pool.h>
#include <vppinfra/hash.h>
#include <vnet/api_errno.h>

#include <vcl/vcl_event.h>
/**
 * @file
 * @brief VPP Communications Library (VCL) event handler.
 *
 * Definitions for generic event handling in VCL.
 */

int
vce_generate_event (vce_event_thread_t *evt, u32 ev_idx)
{
  int elts, rv = 0;
  vce_event_t *p;

  pthread_mutex_lock (&(evt->generator_lock));

  /* Check there is event data for this event */

  clib_spinlock_lock (&(evt->events_lockp));
  p =  pool_elt_at_index (evt->vce_events, ev_idx);
  ASSERT(p);

  elts = (int) clib_fifo_free_elts (evt->event_index_fifo);
  if (PREDICT_TRUE (elts))
    {
      /* Add event to queue */
      clib_fifo_add1 (evt->event_index_fifo, ev_idx);
      pthread_cond_signal (&(evt->generator_cond));
    }
  else
    {
      rv = VNET_API_ERROR_QUEUE_FULL;
    }

  clib_spinlock_unlock (&(evt->events_lockp));
  pthread_mutex_unlock (&(evt->generator_lock));

  return rv;
}

void
vce_clear_event (vce_event_thread_t *evt, vce_event_t *ev)
{
  clib_spinlock_lock (&(evt->events_lockp));
  pool_put (evt->vce_events, ev);
  clib_spinlock_unlock (&(evt->events_lockp));
}

vce_event_t *
vce_get_event_from_index(vce_event_thread_t *evt, u32 ev_idx)
{
  vce_event_t *ev = 0;

  clib_spinlock_lock (&(evt->events_lockp));
  if ( ! pool_is_free_index (evt->vce_events, ev_idx))
    ev = pool_elt_at_index (evt->vce_events, ev_idx);
  clib_spinlock_unlock (&(evt->events_lockp));

  return ev;
}

vce_event_handler_reg_t *
vce_get_event_handler (vce_event_thread_t *evt, vce_event_key_t *evk)
{
  vce_event_handler_reg_t *handler = 0;
  uword *p;

  clib_spinlock_lock (&evt->handlers_lockp);
  p = hash_get (evt->handlers_index_by_event_key, evk->as_u64);
  if (p)
    handler = pool_elt_at_index (evt->vce_event_handlers, p[0]);
  clib_spinlock_unlock (&evt->handlers_lockp);

  return handler;
}

vce_event_handler_reg_t *
vce_register_handler (vce_event_thread_t *evt, vce_event_key_t *evk,
		      vce_event_callback_t cb)
{
  vce_event_handler_reg_t *handler;
  vce_event_handler_reg_t *old_handler = 0;
  uword *p;
  u32 handler_index;

  /* TODO - multiple handler support. For now we can replace
   * and re-instate, which is useful for event recycling */

  clib_spinlock_lock (&evt->handlers_lockp);

  p = hash_get (evt->handlers_index_by_event_key, evk->as_u64);
  if (p)
    {
      old_handler = pool_elt_at_index (evt->vce_event_handlers, p[0]);
      /* If we are just re-registering, ignore and move on
       * else store the old handler_fn for unregister to re-instate */
      if (old_handler->handler_fn == cb)
	{

	  clib_spinlock_unlock (&evt->handlers_lockp);

	  /* Signal event thread that a handler exists in case any
	   * recycled events requiring this handler are pending */
	  pthread_mutex_lock (&(evt->generator_lock));
	  pthread_cond_signal (&(evt->generator_cond));
	  pthread_mutex_unlock (&(evt->generator_lock));
	  return old_handler;
	}
    }

  pool_get (evt->vce_event_handlers, handler);
  handler_index = (u32) (handler - evt->vce_event_handlers);

  handler->handler_fn = cb;
  handler->replaced_handler_idx = (p) ? p[0] : ~0;
  handler->ev_idx = ~0; //This will be set by the event thread if event happens
  handler->evk = evk->as_u64;

  hash_set (evt->handlers_index_by_event_key, evk->as_u64, handler_index);

  pthread_cond_init (&(handler->handler_cond), NULL);
  pthread_mutex_init (&(handler->handler_lock), NULL);

  clib_spinlock_unlock (&evt->handlers_lockp);

  /* Signal event thread that a new handler exists in case any
   * recycled events requiring this handler are pending */
  pthread_mutex_lock (&(evt->generator_lock));
  pthread_cond_signal (&(evt->generator_cond));
  pthread_mutex_unlock (&(evt->generator_lock));

  return handler;
}

int
vce_unregister_handler (vce_event_thread_t *evt,
			vce_event_handler_reg_t *handler)
{
  uword *p;
  u64 evk = handler->evk;
  u8 generate_signal = 0;

  clib_spinlock_lock (&evt->handlers_lockp);

  p = hash_get (evt->handlers_index_by_event_key, evk);
  if (!p)
    {
      clib_spinlock_unlock (&evt->handlers_lockp);
      return VNET_API_ERROR_NO_SUCH_ENTRY;
    }

  handler = pool_elt_at_index (evt->vce_event_handlers, p[0]);

  /* If this handler replaced another handler, re-instate it */
  if (handler->replaced_handler_idx != ~0)
    {
      hash_set (evt->handlers_index_by_event_key, evk,
		handler->replaced_handler_idx);
      generate_signal = 1;
    }
  else
    {
      hash_unset (evt->handlers_index_by_event_key, evk);
    }

  pthread_mutex_destroy (&(handler->handler_lock));
  pthread_cond_destroy (&(handler->handler_cond));
  pool_put (evt->vce_event_handlers, handler);

  clib_spinlock_unlock (&evt->handlers_lockp);

  if (generate_signal)
    {
      /* Signal event thread that a new handler exists in case any
       * recycled events requiring this handler are pending */
      pthread_mutex_lock (&(evt->generator_lock));
      pthread_cond_signal (&(evt->generator_cond));
      pthread_mutex_unlock (&(evt->generator_lock));
    }

  return 0;
}

void *
vce_event_thread_fn (void *arg)
{
  vce_event_thread_t *evt = (vce_event_thread_t *) arg;
  vce_event_t *ev;
  u32 ev_idx;
  vce_event_handler_reg_t *handler;
  uword *p;

  evt->recycle_event = 1; // Used for recycling events with no handlers


  do
    {
      pthread_mutex_lock (&(evt->generator_lock));
      while ( (clib_fifo_elts (evt->event_index_fifo) == 0) ||
	      evt->recycle_event)
	{
	  evt->recycle_event = 0;
	  pthread_cond_wait (&(evt->generator_cond),
			     &(evt->generator_lock));
	}

      /* Remove event */
      clib_spinlock_lock (&(evt->events_lockp));

      clib_fifo_sub1 (evt->event_index_fifo, ev_idx);
      ev = pool_elt_at_index (evt->vce_events, ev_idx);

      clib_spinlock_unlock (&(evt->events_lockp));

      ASSERT(ev);

      clib_spinlock_lock (&evt->handlers_lockp);

      p = hash_get (evt->handlers_index_by_event_key, ev->evk.as_u64);
      if (!p)
	{
	  /* If an event falls in the woods, and there is no handler to hear it,
	   * does it make any sound?
	   * I don't know either, so lets try recycling the event */
	  clib_fifo_add1 (evt->event_index_fifo, ev_idx);
	  evt->recycle_event = 1;
	  clib_spinlock_unlock (&evt->handlers_lockp);
	  goto unlock;
	}
      handler = pool_elt_at_index (evt->vce_event_handlers, p[0]);
      handler->ev_idx = ev_idx;

      clib_spinlock_unlock (&evt->handlers_lockp);

      (handler->handler_fn)(handler);

    unlock:
      pthread_mutex_unlock (&(evt->generator_lock));
    }
  while (1);
  return NULL;
}

int
vce_start_event_thread (vce_event_thread_t *evt, u8 max_events)
{
  clib_fifo_validate (evt->event_index_fifo, max_events);
  evt->handlers_index_by_event_key = hash_create (0, sizeof (uword));

  pthread_cond_init (&(evt->generator_cond), NULL);
  pthread_mutex_init (&(evt->generator_lock), NULL);

  clib_spinlock_init (&(evt->events_lockp));
  clib_spinlock_init (&(evt->handlers_lockp));

  return pthread_create (&(evt->thread), NULL /* attr */ ,
			 vce_event_thread_fn, evt);
}