FreeBSD/Linux Kernel Cross Reference
sys/netinet/sctp_var.h

     /*      $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $       */
     /*      $NetBSD: sctp_var.h,v 1.4 2020/04/27 19:21:43 rjs Exp $ */
     
     /*
      * Copyright (c) 2001, 2002, 2003, 2004 Cisco Systems, Inc.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Cisco Systems, Inc.
     * 4. Neither the name of the project nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY CISCO SYSTEMS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL CISCO SYSTEMS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #ifndef _NETINET_SCTP_VAR_H_
    #define _NETINET_SCTP_VAR_H_
    
    #include <sys/socketvar.h>
    #include <netinet/sctp_uio.h>
    
    /* SCTP Kernel structures */
    
    /*
     * Names for SCTP sysctl objects
     */
    #ifndef __APPLE__
    #define SCTPCTL_MAXDGRAM            1   /* max datagram size */
    #define SCTPCTL_RECVSPACE           2   /* default receive buffer space */
    #define SCTPCTL_AUTOASCONF          3   /* auto asconf enable/disable flag */
    #define SCTPCTL_ECN_ENABLE          4   /* Is ecn allowed */
    #define SCTPCTL_ECN_NONCE           5   /* Is ecn nonce allowed */
    #define SCTPCTL_STRICT_SACK         6   /* strictly require sack'd TSN's to be
                                             * smaller than sndnxt.
                                             */
    #define SCTPCTL_NOCSUM_LO           7   /* Require that the Loopback NOT have
                                             * the crc32 checksum on packets routed over
                                             * it.
                                             */
    #define SCTPCTL_STRICT_INIT         8
    #define SCTPCTL_PEER_CHK_OH         9
    #define SCTPCTL_MAXBURST            10
    #define SCTPCTL_MAXCHUNKONQ         11
    #define SCTPCTL_DELAYED_SACK        12
    #define SCTPCTL_HB_INTERVAL         13
    #define SCTPCTL_PMTU_RAISE          14
    #define SCTPCTL_SHUTDOWN_GUARD      15
    #define SCTPCTL_SECRET_LIFETIME     16
    #define SCTPCTL_RTO_MAX             17
    #define SCTPCTL_RTO_MIN             18
    #define SCTPCTL_RTO_INITIAL         19
    #define SCTPCTL_INIT_RTO_MAX        20
    #define SCTPCTL_COOKIE_LIFE         21
    #define SCTPCTL_INIT_RTX_MAX        22
    #define SCTPCTL_ASSOC_RTX_MAX       23
    #define SCTPCTL_PATH_RTX_MAX        24
    #define SCTPCTL_NR_OUTGOING_STREAMS 25
    #ifdef SCTP_DEBUG
    #define SCTPCTL_DEBUG               26
    #endif
    
    #endif
    
    #if defined(_KERNEL)
    
    extern const struct pr_usrreqs sctp_usrreqs;
    
    int sctp_usrreq(struct socket *, int, struct mbuf *, struct mbuf *,
                          struct mbuf *, struct lwp *);
    
    #define sctp_sbspace(sb) ((long) (((sb)->sb_hiwat > (sb)->sb_cc) ? ((sb)->sb_hiwat - (sb)->sb_cc) : 0))
    
    #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0)
    
    extern int      sctp_sendspace;
    extern int      sctp_recvspace;
    extern int      sctp_ecn;
    extern int      sctp_ecn_nonce;
    
   #define sctp_ucount_incr(val) { \
           val++; \
   }
   
   #define sctp_ucount_decr(val) { \
           if (val > 0) { \
                   val--; \
           } else { \
                   val = 0; \
           } \
   }
   
   #define sctp_flight_size_decrease(tp1) do { \
           if (tp1->whoTo->flight_size >= tp1->book_size) \
                   tp1->whoTo->flight_size -= tp1->book_size; \
           else \
                   tp1->whoTo->flight_size = 0; \
   } while (0)
   
   #define sctp_flight_size_increase(tp1) do { \
          (tp1)->whoTo->flight_size += (tp1)->book_size; \
   } while (0)
   
   #define sctp_total_flight_decrease(stcb, tp1) do { \
           if (stcb->asoc.total_flight >= tp1->book_size) { \
                   stcb->asoc.total_flight -= tp1->book_size; \
                   if (stcb->asoc.total_flight_count > 0) \
                           stcb->asoc.total_flight_count--; \
           } else { \
                   stcb->asoc.total_flight = 0; \
                   stcb->asoc.total_flight_count = 0; \
           } \
   } while (0)
   
   #define sctp_total_flight_increase(stcb, tp1) do { \
          (stcb)->asoc.total_flight_count++; \
          (stcb)->asoc.total_flight += (tp1)->book_size; \
   } while (0)
   
   
   struct sctp_nets;
   struct sctp_inpcb;
   struct sctp_tcb;
   struct sctphdr;
   
   void*   sctp_ctlinput(int, const struct sockaddr *, void *);
   int     sctp_ctloutput(int, struct socket *, struct sockopt *);
   void    sctp_input(struct mbuf *, int, int);
   void    sctp_drain(void);
   void    sctp_init(void);
   int     sctp_shutdown(struct socket *);
   void    sctp_notify(struct sctp_inpcb *, int, struct sctphdr *,
                            struct sockaddr *, struct sctp_tcb *,
                            struct sctp_nets *);
   int sctp_rcvd(struct socket *, int, struct lwp *);
   int sctp_send(struct socket *, struct mbuf *, struct sockaddr *,
                   struct mbuf *, struct lwp *);
   
   #if defined(INET6)
   void ip_2_ip6_hdr(struct ip6_hdr *, struct ip *);
   #endif
   
   int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
           int, int, struct lwp *);
   int sctp_do_connect_x(struct socket *, struct sctp_connectx_addrs *,
           struct lwp *, int);
   
   /* can't use sctp_assoc_t here */
   int sctp_peeloff(struct socket *, struct socket *, int, vaddr_t, int *);
   
   
   sctp_assoc_t sctp_getassocid(struct sockaddr *);
   int sctp_sockaddr(struct socket *, struct sockaddr *);
   int sctp_peeraddr(struct socket *, struct sockaddr *);
   int sctp_listen(struct socket *, struct lwp *);
   int sctp_accept(struct socket *, struct sockaddr *);
   
   int sctp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
   
   #endif /* _KERNEL */
   
   #endif /* !_NETINET_SCTP_VAR_H_ */

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