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

     /*      $KAME: sctputil.h,v 1.15 2005/03/06 16:04:19 itojun Exp $       */
     /*      $NetBSD: sctputil.h,v 1.3 2020/01/19 20:51:13 riastradh Exp $ */
     
     #ifndef __SCTPUTIL_H__
     #define __SCTPUTIL_H__
     
     /*
      * Copyright (C) 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. 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 THE PROJECT 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 THE PROJECT 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.
     */
    
    #if defined(_KERNEL)
    
    #ifdef SCTP_MBUF_DEBUG
    #define sctp_m_freem(m) do { \
        printf("m_freem(%p) m->nxtpkt:%p at %s[%d]\n", \
               (m), (m)->m_next, __FILE__, __LINE__); \
        m_freem(m); \
    } while (0);
    #else
    #define sctp_m_freem m_freem
    #endif
    
    #define sctp_m_copym    m_copym
    
    /*
     * Zone(pool) allocation routines: MUST be defined for each OS
     * zone = zone/pool pointer
     * name = string name of the zone/pool
     * size = size of each zone/pool element
     * number = number of elements in zone/pool
     */
    #if defined(__FreeBSD__)
    #if __FreeBSD_version >= 500000
    #include <vm/uma.h>
    #else
    #include <vm/vm_zone.h>
    #endif
    #elif defined(__NetBSD__) || defined(__OpenBSD__)
    #include <sys/pool.h>
    #endif
    
    /* SCTP_ZONE_INIT: initialize the zone */
    #if defined(__FreeBSD__)
    #if __FreeBSD_version >= 500000
    #define UMA_ZFLAG_FULL  0x0020
    #define SCTP_ZONE_INIT(zone, name, size, number) { \
            zone = uma_zcreate(name, size, NULL, NULL, NULL, NULL, UMA_ALIGN_PTR,\
                    UMA_ZFLAG_FULL); \
            uma_zone_set_max(zone, number); \
    }
    #else
    #define SCTP_ZONE_INIT(zone, name, size, number) \
            zone = zinit(name, size, number, ZONE_INTERRUPT, 0);
    #endif
    #elif defined(__APPLE__)
    #define SCTP_ZONE_INIT(zone, name, size, number) \
            zone = (void *)zinit(size, number * size, number, name);
    #elif defined(__OpenBSD__) || defined(__NetBSD__)
    #define SCTP_ZONE_INIT(zone, name, size, number) \
            pool_init(&(zone), size, 0, 0, 0, name, NULL, IPL_NET);
    #else
            /* don't know this OS! */
            force_comile_error;
    #endif
    
    /* SCTP_ZONE_GET: allocate element from the zone */
    #if defined(__FreeBSD__)
    #if __FreeBSD_version >= 500000
    #define SCTP_ZONE_GET(zone) \
            uma_zalloc(zone, M_NOWAIT);
    #else
    #define SCTP_ZONE_GET(zone) \
            zalloci(zone);
    #endif
   #elif defined(__APPLE__)
   #define SCTP_ZONE_GET(zone) \
           zalloc(zone);
   #elif defined(__NetBSD__) || defined(__OpenBSD__)
   #define SCTP_ZONE_GET(zone) \
           pool_get(&zone, PR_NOWAIT);
   #else
           /* don't know this OS! */
           force_comile_error;
   #endif
   
   /* SCTP_ZONE_FREE: free element from the zone */
   #if defined(__FreeBSD__)
   #if __FreeBSD_version >= 500000
   #define SCTP_ZONE_FREE(zone, element) \
           uma_zfree(zone, element);
   #else
   #define SCTP_ZONE_FREE(zone, element) \
           zfreei(zone, element);
   #endif
   #elif defined(__APPLE__)
   #define SCTP_ZONE_FREE(zone, element) \
           zfree(zone, element);
   #elif defined(__NetBSD__) || defined(__OpenBSD__)
   #define SCTP_ZONE_FREE(zone, element) \
           pool_put(&zone, element);
   #else
           /* don't know this OS! */
           force_comile_error;
   #endif
   
   #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.my_vtag)
   
   /*
    * Function prototypes
    */
   struct ifaddr *sctp_find_ifa_by_addr(struct sockaddr *sa);
   
   u_int32_t sctp_select_initial_TSN(struct sctp_pcb *);
   
   u_int32_t sctp_select_a_tag(struct sctp_inpcb *);
   
   int sctp_init_asoc(struct sctp_inpcb *, struct sctp_association *, int, uint32_t);
   
   int sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
           struct sctp_nets *);
   
   int sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
           struct sctp_nets *);
   
   u_int32_t sctp_calculate_sum(struct mbuf *, int32_t *, u_int32_t);
   
   void sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *,
           u_long);
   
   int find_next_best_mtu(int);
   
   u_int32_t sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
           struct sctp_nets *, struct timeval *);
   
   u_int32_t sctp_calculate_len(struct mbuf *);
   
   void *sctp_m_getptr(struct mbuf *, int, int, u_int8_t *);
   
   struct sctp_paramhdr *sctp_get_next_param(struct mbuf *, int,
           struct sctp_paramhdr *, int);
   
   int sctp_add_pad_tombuf(struct mbuf *, int);
   
   int sctp_pad_lastmbuf(struct mbuf *, int);
   
   void sctp_ulp_notify(u_int32_t, struct sctp_tcb *, u_int32_t, void *);
   
   void sctp_report_all_outbound(struct sctp_tcb *);
   
   int sctp_expand_mapping_array(struct sctp_association *);
   
   void sctp_abort_notification(struct sctp_tcb *, int);
   
   /* We abort responding to an IP packet for some reason */
   void sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *,
       struct mbuf *, int, struct sctphdr *, struct mbuf *);
   
   /* We choose to abort via user input */
   void sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int,
           struct mbuf *);
   
   void sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *,
       struct sctp_inpcb *, struct mbuf *);
   
   int sctp_is_there_an_abort_here(struct mbuf *, int, int *);
   uint32_t sctp_is_same_scope(const struct sockaddr_in6 *,
           const struct sockaddr_in6 *);
   const struct sockaddr_in6 *sctp_recover_scope(const struct sockaddr_in6 *,
           struct sockaddr_in6 *);
   
   int sctp_cmpaddr(const struct sockaddr *, const struct sockaddr *);
   
   void sctp_print_address(const struct sockaddr *);
   void sctp_print_address_pkt(struct ip *, struct sctphdr *);
   
   int sbappendaddr_nocheck(struct sockbuf *, const struct sockaddr *,
           struct mbuf *, struct mbuf *, u_int32_t, struct sctp_inpcb *);
   
   
   int sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
           int, struct sctpchunk_listhead *);
   
   struct mbuf *sctp_generate_invmanparam(int);
   
   /*
    * this is an evil layer violation that I think is a hack.. but I stand
    * alone on the tsvwg in this thought... everyone else considers it part
    * of the sockets layer (along with all of the peeloff code :<)
    */
   u_int32_t sctp_get_first_vtag_from_sb(struct socket *);
   
   
   void sctp_grub_through_socket_buffer(struct sctp_inpcb *, struct socket *,
                                        struct socket *, struct sctp_tcb *);
   
   void sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
           struct sctp_tmit_chunk *);
   
   #ifdef SCTP_STAT_LOGGING
   void sctp_log_strm_del_alt(u_int32_t, u_int16_t, int);
   
   void sctp_log_strm_del(struct sctp_tmit_chunk *, struct sctp_tmit_chunk *, int);
   void sctp_log_cwnd(struct sctp_nets *, int, uint8_t);
   void sctp_log_maxburst(struct sctp_nets *, int, int, uint8_t);
   void sctp_log_block(uint8_t, struct socket *, struct sctp_association *);
   void sctp_log_rwnd(uint8_t, u_int32_t, u_int32_t, u_int32_t );
   void sctp_log_mbcnt(uint8_t, u_int32_t, u_int32_t, u_int32_t, u_int32_t);
   void sctp_log_rwnd_set(uint8_t, u_int32_t, u_int32_t, u_int32_t, u_int32_t);
   int sctp_fill_stat_log(struct mbuf *);
   void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
   void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
   
   void sctp_clr_stat_log(void);
   
   #endif
   
   #ifdef SCTP_AUDITING_ENABLED
   void sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
           struct sctp_nets *);
   void sctp_audit_log(u_int8_t, u_int8_t);
   
   #endif
   
   #ifdef SCTP_BASE_FREEBSD
   /* Note: these are in <sys/time.h>, but not in kernel space */
   #define timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0
   #define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
   #define timercmp(tvp, uvp, cmp)                                         \
           (((tvp)->tv_sec == (uvp)->tv_sec) ?                             \
               ((tvp)->tv_usec cmp (uvp)->tv_usec) :                       \
               ((tvp)->tv_sec cmp (uvp)->tv_sec))
   #define timeradd(tvp, uvp, vvp)                                         \
           do {                                                            \
                   (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;          \
                   (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;       \
                   if ((vvp)->tv_usec >= 1000000) {                        \
                           (vvp)->tv_sec++;                                \
                           (vvp)->tv_usec -= 1000000;                      \
                   }                                                       \
           } while (/* CONSTCOND */ 0)
   #define timersub(tvp, uvp, vvp)                                         \
           do {                                                            \
                   (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
                   (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
                   if ((vvp)->tv_usec < 0) {                               \
                           (vvp)->tv_sec--;                                \
                           (vvp)->tv_usec += 1000000;                      \
                   }                                                       \
           } while (/* CONSTCOND */ 0)
   #endif /* SCTP_BASE_FREEBSD */
   
   #endif /* _KERNEL */
   #endif

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