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freebsd-dev/sys/netinet/sctp_var.h
Randall Stewart c54a18d26b - Adds support for the multi-asconf (From Kozuka-san) 
- Adds some prepwork (Not all yet) for vimage in particular
  support the delete the sctppcbinfo.xx structs. There is
  still a leak in here if it were to be called plus we stil
  need the regrouping (From Me and Michael Tuexen)
- Adds support for UDP tunneling. For BSD there is no
  socket yet setup so its disabled, but major argument
  changes are in here to emcompass the passing of the port
  number (zero when you don't have a udp tunnel, the default
  for BSD). Will add some hooks in UDP here shortly (discussed
  with Robert) that will allow easy tunneling. (Mainly from
  Peter Lei and Michael Tuexen with some BSD work from me :-D)
- Some ease for windows, evidently leave is reserved by their
  compile move label leave: -> out:

MFC after:	1 week
2008-05-20 13:47:46 +00:00

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/*-
* Copyright (c) 2001-2007, by 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>
#if defined(_KERNEL)
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)
/* managing mobility_feature in inpcb (by micchie) */
#define sctp_mobility_feature_on(inp, feature) (inp->sctp_mobility_features |= feature)
#define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature)
#define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature)
#define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0)
#define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND))
#define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0))
#define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0))
#define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0)
/*
* 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) { \
SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_strmoq, (_strmoq)); \
SCTP_DECR_STRMOQ_COUNT(); \
}
#define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
(_strmoq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_strmoq, struct sctp_stream_queue_pending); \
if ((_strmoq)) { \
SCTP_INCR_STRMOQ_COUNT(); \
} \
}
#define sctp_free_a_chunk(_stcb, _chk) { \
if(_stcb) { \
SCTP_TCB_LOCK_ASSERT((_stcb)); \
if ((_chk)->whoTo) { \
sctp_free_remote_addr((_chk)->whoTo); \
(_chk)->whoTo = NULL; \
} \
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); \
} \
} else { \
SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, (_chk)); \
SCTP_DECR_CHK_COUNT(); \
} \
}
#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(); \
(_chk)->whoTo = NULL; \
} \
} 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); \
SCTP_STAT_INCR(sctps_cached_chk); \
(_stcb)->asoc.free_chunk_cnt--; \
} \
}
#define sctp_free_remote_addr(__net) { \
if ((__net)) { \
if (atomic_fetchadd_int(&(__net)->ref_count, -1) == 1) { \
(void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \
(void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \
(void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \
if ((__net)->ro.ro_rt) { \
RTFREE((__net)->ro.ro_rt); \
(__net)->ro.ro_rt = NULL; \
} \
if ((__net)->src_addr_selected) { \
sctp_free_ifa((__net)->ro._s_addr); \
(__net)->ro._s_addr = NULL; \
} \
(__net)->src_addr_selected = 0; \
(__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 (((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.my_rwnd_control_len,-(MSIZE)); \
if (val < MSIZE) { \
panic("asoc->mbcnt goes 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 (stcb) { \
atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
} \
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)
#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)
#ifdef SCTP_FS_SPEC_LOG
#define sctp_total_flight_decrease(stcb, tp1) do { \
if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
stcb->asoc.fs_index = 0;\
stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \
stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \
stcb->asoc.fs_index++; \
tp1->window_probe = 0; \
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 { \
if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
stcb->asoc.fs_index = 0;\
stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \
stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \
stcb->asoc.fs_index++; \
(stcb)->asoc.total_flight_count++; \
(stcb)->asoc.total_flight += (tp1)->book_size; \
} while (0)
#else
#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)
#endif
struct sctp_nets;
struct sctp_inpcb;
struct sctp_tcb;
struct sctphdr;
void sctp_close(struct socket *so);
int sctp_disconnect(struct socket *so);
void sctp_ctlinput __P((int, struct sockaddr *, void *));
int sctp_ctloutput __P((struct socket *, struct sockopt *));
void sctp_input_with_port __P((struct mbuf *, int, uint16_t));
void sctp_input __P((struct mbuf *, int));
void sctp_pathmtu_adjustment __P((struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint16_t));
void sctp_drain __P((void));
void sctp_init __P((void));
void sctp_pcbinfo_cleanup(void);
int sctp_flush(struct socket *, int);
int sctp_shutdown __P((struct socket *));
void sctp_notify
__P((struct sctp_inpcb *, struct ip *ip, struct sctphdr *,
struct sockaddr *, struct sctp_tcb *,
struct sctp_nets *));
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 *);
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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