/*- * 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) #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)->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); \ 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 (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) #ifdef RANDY_WILL_USE_LATER /* this will be the non-invarant version */ #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_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) #else #define sctp_flight_size_decrease(tp1) do { \ if (tp1->whoTo->flight_size >= tp1->book_size) \ tp1->whoTo->flight_size -= tp1->book_size; \ else \ panic("flight size corruption"); \ } 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 { \ panic("total flight size corruption"); \ } \ } while (0) #endif #define sctp_flight_size_increase(tp1) do { \ (tp1)->whoTo->flight_size += (tp1)->book_size; \ } 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 __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 *)); 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_ */