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freebsd-skq/sys/netinet/sctp_var.h
rrs e1de0a1eda - send call has a reference to uio->uio_resid in 
the recent send code, but uio may be NULL on sendfile
  calls. Change to use sndlen variable.
- EMSGSIZE is not being returned in non-blocking mode
  and needs a small tweak to look if the msg would
  ever fit when returning EWOULDBLOCK.
- FWD-TSN has a bug in stream processing which could
  cause a panic. This is a follow on to the codenomicon
  fix.
- PDAPI level 1 and 2 do not work unless the reader
  gets his returned buffer full. Fix so we can break
  out when at level 1 or 2.
- Fix fast-handoff features to copy across properly on
  accepted sockets
- Fix sctp_peeloff() system call when no true system call
  exists to screen arguments for errors. In cases where a
  real system call exists the system call itself does this.
- Fix raddr leak in recent add-ip code change for bundled
  asconfs (even when non-bundled asconfs are received)
- Make sure ipi_addr lock is held when walking global addr
  list. Need to change this lock type to a rwlock().
- Add don't wake flag on both input and output when the
  socket is closing.
- When deleting an address verify the interface is correct
  before allowing the delete to process. This protects panda
  and unnumbered.
- Clean up old sysctl stuff and get rid of the old Open/Net
  BSD structures.
- Add a function to watch the ranges in the sysctl sets.
- When appending in the reassembly queue, validate that
  the assoc has not gone to about to be freed. If so
  (in the middle) abort out. Note this especially effects
  MAC I think due to the lock/unlock they do (or with
  LOCK testing in place).
- Netstat patch to get rid of warnings.
- Make sure that no data gets queued to inactive/unconfirmed
  destinations. This especially effect CMT but also makes a
  impact on regular SCTP as well.
- During init collision when we detect seq number out
  of sync we need to treat it like Case C and discard
  the cookie (no invarient needed here).
- Atomic access to the random store.
- When we declare a vtag good, we need to shove it
  into the time wait hash to prevent further use. When
  the tag is put into the assoc hash, we need to remove it
  from the twait hash (where it will surely be). This prevents
  duplicate tag assignments.
- Move decr-ref count to better protect sysctl out of
  data.
- ltrace error corrections in sctp6_usrreq.c
- Add hook for interface up/down to be sent to us.
- Make sysctl() exported structures independent of processor
  architecture.
- Fix route and src addr cache clearing for delete address case.
- Make sure address marked SCTP_DEL_IP_ADDRESS is never selected
  as src addr.
- in icmp handling fixed so we actually look at the icmp codes
  to figure out what to do.
- Modified mobility code.
  Reception of DELETE IP ADDRESS for a primary destination and
  SET PRIMARY for a new primary destination is used for
  retransmission trigger to the new primary destination.
  Also, in this case, destination of chunks in send_queue are
  changed to the new primary destination.
- Fix so that we disallow sending by mbuf to ever have EEOR
  mode set upon it.

Approved by:	re@freebsd.org (B Mah)
2007-09-08 17:48:46 +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_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)
/*
* 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 __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 *, 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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