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      1 /*	$KAME: dccp_cc_sw.h,v 1.6 2005/02/10 04:25:38 itojun Exp $	*/
      2 /*	$NetBSD: dccp_cc_sw.h,v 1.1 2015/02/10 19:11:52 rjs Exp $ */
      3 
      4 /*
      5  * Copyright (c) 2003  Nils-Erik Mattsson
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  *
     31  * Id: dccp_cc_sw.h,v 1.13 2003/05/13 15:31:50 nilmat-8 Exp
     32  */
     33 
     34 #ifndef _NETINET_DCCP_CC_SW_H_
     35 #define _NETINET_DCCP_CC_SW_H_
     36 
     37 /* All functions except inits has the ccb as first argument */
     38 
     39 /* Sender side */
     40 
     41 /* Init the sender side
     42  * args: dccpcb of current connection
     43  * returns: sender ccb
     44  */
     45 typedef void *  cc_send_init_t     (struct dccpcb *);
     46 
     47 /* Free the sender side */
     48 typedef void   cc_send_free_t     (void *);
     49 
     50 /* Ask the cc mechanism if dccp is allowed to send a packet
     51  * args: the packet size (0 == ACK)
     52  * returns: 1 if allowed to send, otherwise 0
     53  */
     54 typedef int    cc_send_packet_t   (void *, long);
     55 
     56 /* Inform the cc mechanism that a packet was sent
     57  * args:  if there exists more to send or not
     58  *        size of packet sent
     59  */
     60 typedef void   cc_send_packet_sent_t (void *, int, long);
     61 
     62 /* Inform the cc mechanism (sender) that a packet has been received
     63  * args:  options and option length
     64  */
     65 typedef void   cc_send_packet_recv_t (void *, char *, int);
     66 
     67 
     68 /* Receiver side */
     69 
     70 /* Init the receiver side
     71  * args: dccpcb of current connection
     72  * returns: receiver ccb
     73  */
     74 typedef void *  cc_recv_init_t   (struct dccpcb *);
     75 
     76 /* Free the receiver side */
     77 typedef void   cc_recv_free_t   (void *);
     78 
     79 /* Inform the cc mechanism (receiver) that a packet was received
     80  * args:  options and option length
     81  */
     82 typedef void   cc_recv_packet_recv_t (void *, char *, int);
     83 
     84 struct dccp_cc_sw {
     85 	/* Sender side */
     86 	cc_send_init_t   *cc_send_init;
     87 	cc_send_free_t   *cc_send_free;
     88 	cc_send_packet_t *cc_send_packet;
     89 	cc_send_packet_sent_t *cc_send_packet_sent;
     90 	cc_send_packet_recv_t *cc_send_packet_recv;
     91 
     92 	/* Receiver side */
     93 	cc_recv_init_t   *cc_recv_init;
     94 	cc_recv_free_t   *cc_recv_free;
     95 	cc_recv_packet_recv_t   *cc_recv_packet_recv;
     96 };
     97 
     98 /* Max ccid (i.e. cc_sw has DCCP_CC_MAX_CCID+2 elements) */
     99 #define DCCP_CC_MAX_CCID 2
    100 
    101 #endif
    102