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freebsd-dev/sys/netinet/sctp_var.h
Randall Stewart f42a358a6f - Copyright updates (aka 2007) 
- ZONE get now also take a type cast so it does the
  cast like mtod does.
- New macro SCTP_LIST_EMPTY, which in bsd is just
  LIST_EMPTY
- Removal of const in some of the static hmac functions
  (not needed)
- Store length changes to allow for new fields in auth
- Auth code updated to current draft (this should be the
  RFC version we think).
- use uint8_t instead of u_char in LOOPBACK address comparison
- Some u_int32_t converted to uint32_t (in crc code)
- A bug was found in the mib counts for ordered/unordered
  count, this was fixed (was referencing a freed mbuf).
- SCTP_ASOCLOG_OF_TSNS added (code will probably disappear
  after my testing completes. It allows us to keep a
  small log on each assoc of the last 40 TSN's in/out and
  stream assignment. It is NOT in options and so is only
  good for private builds.
- Some CMT changes in prep for Jana fixing his problem
  with reneging when CMT is enabled (Concurrent Multipath
  Transfer = CMT).
- Some missing mib stats added.
- Correction to number of open assoc's count in mib
- Correction to os_bsd.h to get right sha2 macros
- Add of special AUTH_04 flags so you can compile the code
  with the old format (in case the peer does not yet support
  the latest auth code).
- Nonce sum was incorrectly being set in when ecn_nonce was
  NOT on.
- LOR in listen with implicit bind found and fixed.
- Moved away from using mbuf's for socket options to using
  just data pointers. The mbufs were used to harmonize
  NetBSD code since both Net and Open used this method. We
  have decided to move away from that and more conform to
  FreeBSD style (which makes more sense).
- Very very nasty bug found in some of my "debug" code. The
  cookie_how collision case tracking had an endless loop in
  it if you got a second retransmission of a cookie collision
  case. This would lock up  a CPU .. ugly..
- auth function goes to using size_t instead of int which
  conforms to socketapi better
- Found the nasty bug that happens after 9 days of testing.. you
  get the data chunk, deliver it and due to the reference to a ch->
  that every now and then has been deleted (depending on the postion
  in the mbuf) you have an invalid ch->ch.flags.. and thus you don't
  advance the stream sequence number.. so you block the stream
  permanently. The fix is to make local variables of these guys
  and set them up before you have any chance of trimming the
  mbuf.
- style fix in sctp_util.h, not sure how this got bad maybe in
  the last patch? (aka it may not be in the real source).
- Found interesting bug when using the extended snd/rcv info where
  we would get an error on receiving with this. Thats because
  it was NOT padded to the same size as the snd_rcv info. We
  increase (add the pad) so the two structs are the same size
  in sctp_uio.h
- In sctp_usrreq.c one of the most common things we did for
  socket options was to cast the pointer and validate the size.
  This as been macro-ized to help make the code more readable.
- in sctputil.c two things, the socketapi class found a missing
  flag type (the next msg is a notification) and a missing
  scope recovery was also fixed.

Reviewed by:	gnn
2007-02-12 23:24:31 +00:00

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/*-
* Copyright (c) 2001-2007, 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:
*
* a) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* b) 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.
*
* c) Neither the name of Cisco Systems, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
/* $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $ */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef _NETINET_SCTP_VAR_H_
#define _NETINET_SCTP_VAR_H_
#include <netinet/sctp_uio.h>
/* SCTP Kernel structures */
/*
* Names for SCTP sysctl objects
*/
#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
#define SCTPCTL_CMT_ON_OFF 26
#define SCTPCTL_CWND_MAXBURST 27
#define SCTPCTL_EARLY_FR 28
#define SCTPCTL_RTTVAR_CC 29
#define SCTPCTL_DEADLOCK_DET 30
#define SCTPCTL_EARLY_FR_MSEC 31
#define SCTPCTL_ASCONF_AUTH_NOCHK 32
#define SCTPCTL_AUTH_DISABLE 33
#define SCTPCTL_AUTH_RANDOM_LEN 34
#define SCTPCTL_AUTH_HMAC_ID 35
#define SCTPCTL_ABC_L_VAR 36
#define SCTPCTL_MAX_MBUF_CHAIN 37
#define SCTPCTL_CMT_USE_DAC 38
#define SCTPCTL_DO_DRAIN 39
#define SCTPCTL_WARM_CRC32 40
#define SCTPCTL_QLIMIT_ABORT 41
#define SCTPCTL_STRICT_ORDER 42
#define SCTPCTL_TCBHASHSIZE 43
#define SCTPCTL_PCBHASHSIZE 44
#define SCTPCTL_CHUNKSCALE 45
#define SCTPCTL_MINSPLIT 46
#define SCTPCTL_ADD_MORE 47
#define SCTPCTL_SYS_RESC 48
#define SCTPCTL_ASOC_RESC 49
#define SCTPCTL_NAT_FRIENDLY 50
#ifdef SCTP_DEBUG
#define SCTPCTL_DEBUG 51
#define SCTPCTL_MAXID 51
#else
#define SCTPCTL_MAXID 50
#endif
#ifdef SCTP_DEBUG
#define SCTPCTL_NAMES { \
{ 0, 0 }, \
{ "sendspace", CTLTYPE_INT }, \
{ "recvspace", CTLTYPE_INT }, \
{ "autoasconf", CTLTYPE_INT }, \
{ "ecn_enable", CTLTYPE_INT }, \
{ "ecn_nonce", CTLTYPE_INT }, \
{ "strict_sack", CTLTYPE_INT }, \
{ "looback_nocsum", CTLTYPE_INT }, \
{ "strict_init", CTLTYPE_INT }, \
{ "peer_chkoh", CTLTYPE_INT }, \
{ "maxburst", CTLTYPE_INT }, \
{ "maxchunks", CTLTYPE_INT }, \
{ "delayed_sack_time", CTLTYPE_INT }, \
{ "heartbeat_interval", CTLTYPE_INT }, \
{ "pmtu_raise_time", CTLTYPE_INT }, \
{ "shutdown_guard_time", CTLTYPE_INT }, \
{ "secret_lifetime", CTLTYPE_INT }, \
{ "rto_max", CTLTYPE_INT }, \
{ "rto_min", CTLTYPE_INT }, \
{ "rto_initial", CTLTYPE_INT }, \
{ "init_rto_max", CTLTYPE_INT }, \
{ "valid_cookie_life", CTLTYPE_INT }, \
{ "init_rtx_max", CTLTYPE_INT }, \
{ "assoc_rtx_max", CTLTYPE_INT }, \
{ "path_rtx_max", CTLTYPE_INT }, \
{ "nr_outgoing_streams", CTLTYPE_INT }, \
{ "cmt_on_off", CTLTYPE_INT }, \
{ "cwnd_maxburst", CTLTYPE_INT }, \
{ "early_fast_retran", CTLTYPE_INT }, \
{ "use_rttvar_congctrl", CTLTYPE_INT }, \
{ "deadlock_detect", CTLTYPE_INT }, \
{ "early_fast_retran_msec", CTLTYPE_INT }, \
{ "asconf_auth_nochk", CTLTYPE_INT }, \
{ "auth_disable", CTLTYPE_INT }, \
{ "auth_random_len", CTLTYPE_INT }, \
{ "auth_hmac_id", CTLTYPE_INT }, \
{ "abc_l_var", CTLTYPE_INT }, \
{ "max_mbuf_chain", CTLTYPE_INT }, \
{ "cmt_use_dac", CTLTYPE_INT }, \
{ "do_sctp_drain", CTLTYPE_INT }, \
{ "warm_crc_table", CTLTYPE_INT }, \
{ "abort_at_limit", CTLTYPE_INT }, \
{ "strict_data_order", CTLTYPE_INT }, \
{ "tcbhashsize", CTLTYPE_INT }, \
{ "pcbhashsize", CTLTYPE_INT }, \
{ "chunkscale", CTLTYPE_INT }, \
{ "min_split_point", CTLTYPE_INT }, \
{ "add_more_on_output", CTLTYPE_INT }, \
{ "sys_resource", CTLTYPE_INT }, \
{ "asoc_resource", CTLTYPE_INT }, \
{ "nat_friendly", CTLTYPE_INT }, \
{ "debug", CTLTYPE_INT }, \
}
#else
#define SCTPCTL_NAMES { \
{ 0, 0 }, \
{ "sendspace", CTLTYPE_INT }, \
{ "recvspace", CTLTYPE_INT }, \
{ "autoasconf", CTLTYPE_INT }, \
{ "ecn_enable", CTLTYPE_INT }, \
{ "ecn_nonce", CTLTYPE_INT }, \
{ "strict_sack", CTLTYPE_INT }, \
{ "looback_nocsum", CTLTYPE_INT }, \
{ "strict_init", CTLTYPE_INT }, \
{ "peer_chkoh", CTLTYPE_INT }, \
{ "maxburst", CTLTYPE_INT }, \
{ "maxchunks", CTLTYPE_INT }, \
{ "delayed_sack_time", CTLTYPE_INT }, \
{ "heartbeat_interval", CTLTYPE_INT }, \
{ "pmtu_raise_time", CTLTYPE_INT }, \
{ "shutdown_guard_time", CTLTYPE_INT }, \
{ "secret_lifetime", CTLTYPE_INT }, \
{ "rto_max", CTLTYPE_INT }, \
{ "rto_min", CTLTYPE_INT }, \
{ "rto_initial", CTLTYPE_INT }, \
{ "init_rto_max", CTLTYPE_INT }, \
{ "valid_cookie_life", CTLTYPE_INT }, \
{ "init_rtx_max", CTLTYPE_INT }, \
{ "assoc_rtx_max", CTLTYPE_INT }, \
{ "path_rtx_max", CTLTYPE_INT }, \
{ "nr_outgoing_streams", CTLTYPE_INT }, \
{ "cmt_on_off", CTLTYPE_INT }, \
{ "cwnd_maxburst", CTLTYPE_INT }, \
{ "early_fast_retran", CTLTYPE_INT }, \
{ "use_rttvar_congctrl", CTLTYPE_INT }, \
{ "deadlock_detect", CTLTYPE_INT }, \
{ "early_fast_retran_msec", CTLTYPE_INT }, \
{ "asconf_auth_nochk", CTLTYPE_INT }, \
{ "auth_disable", CTLTYPE_INT }, \
{ "auth_random_len", CTLTYPE_INT }, \
{ "auth_hmac_id", CTLTYPE_INT }, \
{ "abc_l_var", CTLTYPE_INT }, \
{ "max_mbuf_chain", CTLTYPE_INT }, \
{ "cmt_use_dac", CTLTYPE_INT }, \
{ "do_sctp_drain", CTLTYPE_INT }, \
{ "warm_crc_table", CTLTYPE_INT }, \
{ "abort_at_limit", CTLTYPE_INT }, \
{ "strict_data_order", CTLTYPE_INT }, \
{ "tcbhashsize", CTLTYPE_INT }, \
{ "pcbhashsize", CTLTYPE_INT }, \
{ "chunkscale", CTLTYPE_INT }, \
{ "min_split_point", CTLTYPE_INT }, \
{ "add_more_on_output", CTLTYPE_INT }, \
{ "sys_resource", CTLTYPE_INT }, \
{ "asoc_resource", CTLTYPE_INT }, \
{ "nat_friendly", CTLTYPE_INT }, \
}
#endif
#if defined(_KERNEL)
#ifdef SYSCTL_DECL
SYSCTL_DECL(_net_inet_sctp);
#endif
extern struct pr_usrreqs sctp_usrreqs;
#define sctp_feature_on(inp, feature) (inp->sctp_features |= feature)
#define sctp_feature_off(inp, feature) (inp->sctp_features &= ~feature)
#define sctp_is_feature_on(inp, feature) (inp->sctp_features & feature)
#define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0)
#define sctp_sbspace(asoc, sb) ((long) (((sb)->sb_hiwat > (asoc)->sb_cc) ? ((sb)->sb_hiwat - (asoc)->sb_cc) : 0))
#define sctp_sbspace_failedmsgs(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 uint32_t sctp_asoc_free_resc_limit;
extern uint32_t sctp_system_free_resc_limit;
/* I tried to cache the readq entries at one
* point. But the reality is that it did not
* add any performance since this meant
* we had to lock the STCB on read. And at that point
* once you have to do an extra lock, it really does
* not matter if the lock is in the ZONE stuff or
* in our code. Note that this same problem would
* occur with an mbuf cache as well so it is
* not really worth doing, at least right now :-D
*/
#define sctp_free_a_readq(_stcb, _readq) { \
SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_readq, (_readq)); \
SCTP_DECR_READQ_COUNT(); \
}
#define sctp_alloc_a_readq(_stcb, _readq) { \
(_readq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_readq, struct sctp_queued_to_read); \
if ((_readq)) { \
SCTP_INCR_READQ_COUNT(); \
} \
}
#define sctp_free_a_strmoq(_stcb, _strmoq) { \
if (((_stcb)->asoc.free_strmoq_cnt > sctp_asoc_free_resc_limit) || \
(sctppcbinfo.ipi_free_strmoq > sctp_system_free_resc_limit)) { \
SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_strmoq, (_strmoq)); \
SCTP_DECR_STRMOQ_COUNT(); \
} else { \
TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_strmoq, (_strmoq), next); \
(_stcb)->asoc.free_strmoq_cnt++; \
atomic_add_int(&sctppcbinfo.ipi_free_strmoq, 1); \
} \
}
#define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
if (TAILQ_EMPTY(&(_stcb)->asoc.free_strmoq)) { \
(_strmoq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_strmoq, struct sctp_stream_queue_pending); \
if ((_strmoq)) { \
SCTP_INCR_STRMOQ_COUNT(); \
} \
} else { \
(_strmoq) = TAILQ_FIRST(&(_stcb)->asoc.free_strmoq); \
TAILQ_REMOVE(&(_stcb)->asoc.free_strmoq, (_strmoq), next); \
atomic_subtract_int(&sctppcbinfo.ipi_free_strmoq, 1); \
(_stcb)->asoc.free_strmoq_cnt--; \
} \
}
#define sctp_free_a_chunk(_stcb, _chk) { \
if (((_stcb)->asoc.free_chunk_cnt > sctp_asoc_free_resc_limit) || \
(sctppcbinfo.ipi_free_chunks > sctp_system_free_resc_limit)) { \
SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, (_chk)); \
SCTP_DECR_CHK_COUNT(); \
} else { \
TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
(_stcb)->asoc.free_chunk_cnt++; \
atomic_add_int(&sctppcbinfo.ipi_free_chunks, 1); \
} \
}
#define sctp_alloc_a_chunk(_stcb, _chk) { \
if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \
(_chk) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_chunk, struct sctp_tmit_chunk); \
if ((_chk)) { \
SCTP_INCR_CHK_COUNT(); \
} \
} else { \
(_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
atomic_subtract_int(&sctppcbinfo.ipi_free_chunks, 1); \
(_stcb)->asoc.free_chunk_cnt--; \
} \
}
#define sctp_free_remote_addr(__net) { \
if ((__net)) { \
if (atomic_fetchadd_int(&(__net)->ref_count, -1) == 1) { \
SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \
SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \
SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \
(__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \
SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_net, (__net)); \
SCTP_DECR_RADDR_COUNT(); \
} \
} \
}
#define sctp_sbfree(ctl, stcb, sb, m) { \
uint32_t val; \
val = atomic_fetchadd_int(&(sb)->sb_cc,-(SCTP_BUF_LEN((m)))); \
if (val < SCTP_BUF_LEN((m))) { \
panic("sb_cc goes negative"); \
} \
val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \
if (val < MSIZE) { \
panic("sb_mbcnt goes negative"); \
} \
if (SCTP_BUF_IS_EXTENDED(m)) { \
val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \
if (val < SCTP_BUF_EXTEND_SIZE(m)) { \
panic("sb_mbcnt goes negative2"); \
} \
} \
if (((ctl)->do_not_ref_stcb == 0) && stcb) {\
val = atomic_fetchadd_int(&(stcb)->asoc.sb_cc,-(SCTP_BUF_LEN((m)))); \
if (val < SCTP_BUF_LEN((m))) {\
panic("stcb->sb_cc goes negative"); \
} \
val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(MSIZE)); \
if (val < MSIZE) { \
panic("asoc->mbcnt goes negative"); \
} \
if (SCTP_BUF_IS_EXTENDED(m)) { \
val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \
if (val < SCTP_BUF_EXTEND_SIZE(m)) { \
panic("assoc stcb->mbcnt would go negative"); \
} \
} \
} \
if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
SCTP_BUF_TYPE(m) != MT_OOBDATA) \
atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
}
#define sctp_sballoc(stcb, sb, m) { \
atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \
atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
if (SCTP_BUF_IS_EXTENDED(m)) \
atomic_add_int(&(sb)->sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \
if (stcb) { \
atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
atomic_add_int(&(stcb)->asoc.sb_mbcnt, MSIZE); \
if (SCTP_BUF_IS_EXTENDED(m)) \
atomic_add_int(&(stcb)->asoc.sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \
} \
if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
SCTP_BUF_TYPE(m) != MT_OOBDATA) \
atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
}
#define sctp_ucount_incr(val) { \
val++; \
}
#define sctp_ucount_decr(val) { \
if (val > 0) { \
val--; \
} else { \
val = 0; \
} \
}
#define sctp_mbuf_crush(data) do { \
struct mbuf *_m; \
_m = (data); \
while(_m && (SCTP_BUF_LEN(_m) == 0)) { \
(data) = SCTP_BUF_NEXT(_m); \
SCTP_BUF_NEXT(_m) = NULL; \
sctp_m_free(_m); \
_m = (data); \
} \
} while (0)
/*
* some sysctls
*/
extern int sctp_sendspace;
extern int sctp_recvspace;
extern int sctp_ecn_enable;
extern int sctp_ecn_nonce;
extern int sctp_use_cwnd_based_maxburst;
extern unsigned int sctp_cmt_on_off;
extern unsigned int sctp_cmt_use_dac;
extern unsigned int sctp_cmt_sockopt_on_off;
extern uint32_t sctp_nat_friendly;
struct sctp_nets;
struct sctp_inpcb;
struct sctp_tcb;
struct sctphdr;
void sctp_ctlinput __P((int, struct sockaddr *, void *));
int sctp_ctloutput __P((struct socket *, struct sockopt *));
void sctp_input __P((struct mbuf *, int));
void sctp_drain __P((void));
void sctp_init __P((void));
void sctp_pcbinfo_cleanup(void);
int sctp_shutdown __P((struct socket *));
void sctp_notify
__P((struct sctp_inpcb *, int, struct sctphdr *,
struct sockaddr *, struct sctp_tcb *,
struct sctp_nets *));
#if defined(INET6)
void ip_2_ip6_hdr __P((struct ip6_hdr *, struct ip *));
#endif
int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
int, int, struct proc *);
/* can't use sctp_assoc_t here */
int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
sctp_assoc_t sctp_getassocid(struct sockaddr *);
int sctp_ingetaddr(struct socket *,
struct sockaddr **
);
int sctp_peeraddr(struct socket *,
struct sockaddr **
);
int sctp_listen(struct socket *, int, struct thread *);
int sctp_accept(struct socket *, struct sockaddr **);
#endif /* _KERNEL */
#endif /* !_NETINET_SCTP_VAR_H_ */
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