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authorHongjun Ni <hongjun.ni@intel.com>2019-09-10 00:49:24 +0800
committerOle Trøan <otroan@employees.org>2019-09-26 11:40:18 +0000
commit33538a15087eea7c994b6f3d8a952c4b6ea98ee4 (patch)
treedf163312f706753c154546fdbaf3d5623318a04e /src
parent8304933922620cef005b788a36a4d3f2eab45bb5 (diff)
lb: add APIs for set interface nat4 and nat6
Type: feature Change-Id: I5656cd798b108dd780381b87f574554442ed7b23 Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
Diffstat (limited to 'src')
-rw-r--r--src/plugins/lb/api.c42
-rw-r--r--src/plugins/lb/lb.api26
2 files changed, 68 insertions, 0 deletions
diff --git a/src/plugins/lb/api.c b/src/plugins/lb/api.c
index 0543720e4e5..e2ab2ac25df 100644
--- a/src/plugins/lb/api.c
+++ b/src/plugins/lb/api.c
@@ -60,6 +60,8 @@ _(LB_ADD_DEL_AS, lb_add_del_as) \
_(LB_VIP_DUMP, lb_vip_dump) \
_(LB_AS_DUMP, lb_as_dump) \
_(LB_FLUSH_VIP, lb_flush_vip) \
+_(LB_ADD_DEL_INTF_NAT4, lb_add_del_intf_nat4) \
+_(LB_ADD_DEL_INTF_NAT6, lb_add_del_intf_nat6) \
/* Macro to finish up custom dump fns */
@@ -389,6 +391,46 @@ vl_api_lb_flush_vip_t_handler
REPLY_MACRO (VL_API_LB_FLUSH_VIP_REPLY);
}
+static void vl_api_lb_add_del_intf_nat4_t_handler
+ (vl_api_lb_add_del_intf_nat4_t * mp)
+{
+ lb_main_t *lbm = &lb_main;
+ vl_api_lb_add_del_intf_nat4_reply_t *rmp;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ u8 is_del;
+ int rv = 0;
+
+ is_del = !mp->is_add;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ rv = lb_nat4_interface_add_del(sw_if_index, is_del);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_LB_ADD_DEL_INTF_NAT4_REPLY);
+}
+
+static void vl_api_lb_add_del_intf_nat6_t_handler
+ (vl_api_lb_add_del_intf_nat6_t * mp)
+{
+ lb_main_t *lbm = &lb_main;
+ vl_api_lb_add_del_intf_nat6_reply_t *rmp;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ u8 is_del;
+ int rv = 0;
+
+ is_del = !mp->is_add;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ rv = lb_nat6_interface_add_del(sw_if_index, is_del);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_LB_ADD_DEL_INTF_NAT6_REPLY);
+}
+
static void *vl_api_lb_flush_vip_t_print
(vl_api_lb_flush_vip_t *mp, void * handle)
{
diff --git a/src/plugins/lb/lb.api b/src/plugins/lb/lb.api
index b9f5c22126a..b479b1b3034 100644
--- a/src/plugins/lb/lb.api
+++ b/src/plugins/lb/lb.api
@@ -1,5 +1,6 @@
option version = "1.0.0";
import "plugins/lb/lb_types.api";
+import "vnet/interface_types.api";
/** \brief Configure Load-Balancer global parameters (unlike the CLI, both ip4_src_address and ip6_src_address need to be specified.
@param client_index - opaque cookie to identify the sender
@@ -143,3 +144,28 @@ define lb_as_details {
u32 in_use_since;
};
+/** \brief Enable/disable NAT4 feature on the interface
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param sw_if_index - software index of the interface
+*/
+autoreply define lb_add_del_intf_nat4 {
+ u32 client_index;
+ u32 context;
+ bool is_add;
+ vl_api_interface_index_t sw_if_index;
+};
+
+/** \brief Enable/disable NAT6 feature on the interface
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param sw_if_index - software index of the interface
+*/
+autoreply define lb_add_del_intf_nat6 {
+ u32 client_index;
+ u32 context;
+ bool is_add;
+ vl_api_interface_index_t sw_if_index;
+};
' href='#n309'>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 
/*
 *------------------------------------------------------------------
 * svm_queue.c - unidirectional shared-memory queues
 *
 * Copyright (c) 2009-2019 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <vppinfra/mem.h>
#include <vppinfra/format.h>
#include <vppinfra/cache.h>
#include <svm/queue.h>
#include <vppinfra/time.h>
#include <vppinfra/lock.h>

svm_queue_t *
svm_queue_init (void *base, int nels, int elsize)
{
  svm_queue_t *q;
  pthread_mutexattr_t attr;
  pthread_condattr_t cattr;

  q = (svm_queue_t *) base;
  clib_memset (q, 0, sizeof (*q));

  q->elsize = elsize;
  q->maxsize = nels;
  q->producer_evtfd = -1;
  q->consumer_evtfd = -1;

  clib_memset (&attr, 0, sizeof (attr));
  clib_memset (&cattr, 0, sizeof (cattr));

  if (pthread_mutexattr_init (&attr))
    clib_unix_warning ("mutexattr_init");
  if (pthread_mutexattr_setpshared (&attr, PTHREAD_PROCESS_SHARED))
    clib_unix_warning ("pthread_mutexattr_setpshared");
  if (pthread_mutex_init (&q->mutex, &attr))
    clib_unix_warning ("mutex_init");
  if (pthread_mutexattr_destroy (&attr))
    clib_unix_warning ("mutexattr_destroy");
  if (pthread_condattr_init (&cattr))
    clib_unix_warning ("condattr_init");
  /* prints funny-looking messages in the Linux target */
  if (pthread_condattr_setpshared (&cattr, PTHREAD_PROCESS_SHARED))
    clib_unix_warning ("condattr_setpshared");
  if (pthread_cond_init (&q->condvar, &cattr))
    clib_unix_warning ("cond_init1");
  if (pthread_condattr_destroy (&cattr))
    clib_unix_warning ("cond_init2");

  return (q);
}

svm_queue_t *
svm_queue_alloc_and_init (int nels, int elsize, int consumer_pid)
{
  svm_queue_t *q;

  q = clib_mem_alloc_aligned (sizeof (svm_queue_t)
			      + nels * elsize, CLIB_CACHE_LINE_BYTES);
  clib_memset (q, 0, sizeof (*q));
  q = svm_queue_init (q, nels, elsize);
  q->consumer_pid = consumer_pid;

  return q;
}

/*
 * svm_queue_free
 */
void
svm_queue_free (svm_queue_t * q)
{
  (void) pthread_mutex_destroy (&q->mutex);
  (void) pthread_cond_destroy (&q->condvar);
  clib_mem_free (q);
}

void
svm_queue_lock (svm_queue_t * q)
{
  pthread_mutex_lock (&q->mutex);
}

void
svm_queue_unlock (svm_queue_t * q)
{
  pthread_mutex_unlock (&q->mutex);
}

int
svm_queue_is_full (svm_queue_t * q)
{
  return q->cursize == q->maxsize;
}

static inline void
svm_queue_send_signal_inline (svm_queue_t * q, u8 is_prod)
{
  if (q->producer_evtfd == -1)
    {
      (void) pthread_cond_broadcast (&q->condvar);
    }
  else
    {
      int __clib_unused rv, fd;
      u64 data = 1;
      ASSERT (q->consumer_evtfd > 0 && q->producer_evtfd > 0);
      fd = is_prod ? q->producer_evtfd : q->consumer_evtfd;
      rv = write (fd, &data, sizeof (data));
      if (PREDICT_FALSE (rv < 0))
	clib_unix_warning ("signal write on %d returned %d", fd, rv);
    }
}

void
svm_queue_send_signal (svm_queue_t * q, u8 is_prod)
{
  svm_queue_send_signal_inline (q, is_prod);
}

static inline void
svm_queue_wait_inline (svm_queue_t * q)
{
  if (q->producer_evtfd == -1)
    {
      pthread_cond_wait (&q->condvar, &q->mutex);
    }
  else
    {
      /* Fake a wait for event. We could use epoll but that would mean
       * using yet another fd. Should do for now */
      u32 cursize = q->cursize;
      svm_queue_unlock (q);
      while (q->cursize == cursize)
	CLIB_PAUSE ();
      svm_queue_lock (q);
    }
}

void
svm_queue_wait (svm_queue_t * q)
{
  svm_queue_wait_inline (q);
}

static inline int
svm_queue_timedwait_inline (svm_queue_t * q, double timeout)
{
  struct timespec ts;
  ts.tv_sec = unix_time_now () + (u32) timeout;
  ts.tv_nsec = (timeout - (u32) timeout) * 1e9;

  if (q->producer_evtfd == -1)
    {
      return pthread_cond_timedwait (&q->condvar, &q->mutex, &ts);
    }
  else
    {
      double max_time = unix_time_now () + timeout;
      u32 cursize = q->cursize;
      int rv;

      svm_queue_unlock (q);
      while (q->cursize == cursize && unix_time_now () < max_time)
	CLIB_PAUSE ();
      rv = unix_time_now () < max_time ? 0 : ETIMEDOUT;
      svm_queue_lock (q);
      return rv;
    }
}

int
svm_queue_timedwait (svm_queue_t * q, double timeout)
{
  return svm_queue_timedwait_inline (q, timeout);
}

/*
 * svm_queue_add_nolock
 */
int
svm_queue_add_nolock (svm_queue_t * q, u8 * elem)
{
  i8 *tailp;
  int need_broadcast = 0;

  if (PREDICT_FALSE (q->cursize == q->maxsize))
    {
      while (q->cursize == q->maxsize)
	svm_queue_wait_inline (q);
    }

  tailp = (i8 *) (&q->data[0] + q->elsize * q->tail);
  clib_memcpy_fast (tailp, elem, q->elsize);

  q->tail++;
  q->cursize++;

  need_broadcast = (q->cursize == 1);

  if (q->tail == q->maxsize)
    q->tail = 0;

  if (need_broadcast)
    svm_queue_send_signal_inline (q, 1);
  return 0;
}

void
svm_queue_add_raw (svm_queue_t * q, u8 * elem)
{
  i8 *tailp;

  tailp = (i8 *) (&q->data[0] + q->elsize * q->tail);
  clib_memcpy_fast (tailp, elem, q->elsize);

  q->tail = (q->tail + 1) % q->maxsize;
  q->cursize++;

  if (q->cursize == 1)
    svm_queue_send_signal_inline (q, 1);
}


/*
 * svm_queue_add
 */
int
svm_queue_add (svm_queue_t * q, u8 * elem, int nowait)
{
  i8 *tailp;
  int need_broadcast = 0;

  if (nowait)
    {
      /* zero on success */
      if (pthread_mutex_trylock (&q->mutex))
	{
	  return (-1);
	}
    }
  else
    svm_queue_lock (q);

  if (PREDICT_FALSE (q->cursize == q->maxsize))
    {
      if (nowait)
	{
	  svm_queue_unlock (q);
	  return (-2);
	}
      while (q->cursize == q->maxsize)
	svm_queue_wait_inline (q);
    }

  tailp = (i8 *) (&q->data[0] + q->elsize * q->tail);
  clib_memcpy_fast (tailp, elem, q->elsize);

  q->tail++;
  q->cursize++;

  need_broadcast = (q->cursize == 1);

  if (q->tail == q->maxsize)
    q->tail = 0;

  if (need_broadcast)
    svm_queue_send_signal_inline (q, 1);

  svm_queue_unlock (q);

  return 0;
}

/*
 * svm_queue_add2
 */
int
svm_queue_add2 (svm_queue_t * q, u8 * elem, u8 * elem2, int nowait)
{
  i8 *tailp;
  int need_broadcast = 0;

  if (nowait)
    {
      /* zero on success */
      if (pthread_mutex_trylock (&q->mutex))
	{
	  return (-1);
	}
    }
  else
    svm_queue_lock (q);

  if (PREDICT_FALSE (q->cursize + 1 == q->maxsize))
    {
      if (nowait)
	{
	  svm_queue_unlock (q);
	  return (-2);
	}
      while (q->cursize + 1 == q->maxsize)
	svm_queue_wait_inline (q);
    }

  tailp = (i8 *) (&q->data[0] + q->elsize * q->tail);
  clib_memcpy_fast (tailp, elem, q->elsize);

  q->tail++;
  q->cursize++;

  if (q->tail == q->maxsize)
    q->tail = 0;

  need_broadcast = (q->cursize == 1);

  tailp = (i8 *) (&q->data[0] + q->elsize * q->tail);
  clib_memcpy_fast (tailp, elem2, q->elsize);

  q->tail++;
  q->cursize++;

  if (q->tail == q->maxsize)
    q->tail = 0;

  if (need_broadcast)
    svm_queue_send_signal_inline (q, 1);

  svm_queue_unlock (q);

  return 0;
}

/*
 * svm_queue_sub
 */
int
svm_queue_sub (svm_queue_t * q, u8 * elem, svm_q_conditional_wait_t cond,
	       u32 time)
{
  i8 *headp;
  int need_broadcast = 0;
  int rc = 0;

  if (cond == SVM_Q_NOWAIT)
    {
      /* zero on success */
      if (pthread_mutex_trylock (&q->mutex))
	{
	  return (-1);
	}
    }
  else
    svm_queue_lock (q);

  if (PREDICT_FALSE (q->cursize == 0))
    {
      if (cond == SVM_Q_NOWAIT)
	{
	  svm_queue_unlock (q);
	  return (-2);
	}
      else if (cond == SVM_Q_TIMEDWAIT)
	{
	  while (q->cursize == 0 && rc == 0)
	    rc = svm_queue_timedwait_inline (q, time);

	  if (rc == ETIMEDOUT)
	    {
	      svm_queue_unlock (q);
	      return ETIMEDOUT;
	    }
	}
      else
	{
	  while (q->cursize == 0)
	    svm_queue_wait_inline (q);
	}
    }

  headp = (i8 *) (&q->data[0] + q->elsize * q->head);
  clib_memcpy_fast (elem, headp, q->elsize);

  q->head++;
  /* $$$$ JFC shouldn't this be == 0? */
  if (q->cursize == q->maxsize)
    need_broadcast = 1;

  q->cursize--;

  if (q->head == q->maxsize)
    q->head = 0;

  if (need_broadcast)
    svm_queue_send_signal_inline (q, 0);

  svm_queue_unlock (q);

  return 0;
}

int
svm_queue_sub2 (svm_queue_t * q, u8 * elem)
{
  int need_broadcast;
  i8 *headp;

  svm_queue_lock (q);
  if (q->cursize == 0)
    {
      svm_queue_unlock (q);
      return -1;
    }

  headp = (i8 *) (&q->data[0] + q->elsize * q->head);
  clib_memcpy_fast (elem, headp, q->elsize);

  q->head++;
  need_broadcast = (q->cursize == q->maxsize / 2);
  q->cursize--;

  if (PREDICT_FALSE (q->head == q->maxsize))
    q->head = 0;
  svm_queue_unlock (q);

  if (need_broadcast)
    svm_queue_send_signal_inline (q, 0);

  return 0;
}

int
svm_queue_sub_raw (svm_queue_t * q, u8 * elem)
{
  int need_broadcast;
  i8 *headp;

  if (PREDICT_FALSE (q->cursize == 0))
    {
      while (q->cursize == 0)
	;
    }

  headp = (i8 *) (&q->data[0] + q->elsize * q->head);
  clib_memcpy_fast (elem, headp, q->elsize);

  need_broadcast = q->cursize == q->maxsize;

  q->head = (q->head + 1) % q->maxsize;
  q->cursize--;

  if (PREDICT_FALSE (need_broadcast))
    svm_queue_send_signal_inline (q, 0);

  return 0;
}

void
svm_queue_set_producer_event_fd (svm_queue_t * q, int fd)
{
  q->producer_evtfd = fd;
}

void
svm_queue_set_consumer_event_fd (svm_queue_t * q, int fd)
{
  q->consumer_evtfd = fd;
}

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