ofproto/pktbuf.h

   1 /*
   2  * Copyright (c) 2008, 2009, 2011, 2012 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef PKTBUF_H
  18 #define PKTBUF_H 1
  19
  20 #include <stddef.h>
  21 #include <stdint.h>
  22
  23 #include "ofp-errors.h"
  24
  25 struct pktbuf;
  26 struct ofpbuf;
  27
  28 int pktbuf_capacity(void);
  29
  30 struct pktbuf *pktbuf_create(void);
  31 void pktbuf_destroy(struct pktbuf *);
  32 uint32_t pktbuf_save(struct pktbuf *, const void *buffer, size_t buffer_size,
  33                      ofp_port_t in_port);
  34 uint32_t pktbuf_get_null(void);
  35 enum ofperr pktbuf_retrieve(struct pktbuf *, uint32_t id,
  36                             struct ofpbuf **bufferp, ofp_port_t *in_port);
  37 void pktbuf_discard(struct pktbuf *, uint32_t id);
  38
  39 unsigned int pktbuf_count_packets(const struct pktbuf *);
  40
  41 #endif /* pktbuf.h */