The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

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

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10  
    1 /*-
    2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions are met:
    6  *
    7  * a) Redistributions of source code must retain the above copyright notice,
    8  *   this list of conditions and the following disclaimer.
    9  *
   10  * b) Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in
   12  *   the documentation and/or other materials provided with the distribution.
   13  *
   14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
   15  *    contributors may be used to endorse or promote products derived
   16  *    from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   28  * THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /* $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $     */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD$");
   35 
   36 #ifndef _NETINET_SCTP_VAR_H_
   37 #define _NETINET_SCTP_VAR_H_
   38 
   39 #include <netinet/sctp_uio.h>
   40 
   41 #if defined(_KERNEL) || defined(__Userspace__)
   42 
   43 extern struct pr_usrreqs sctp_usrreqs;
   44 
   45 
   46 #define sctp_feature_on(inp, feature)  (inp->sctp_features |= feature)
   47 #define sctp_feature_off(inp, feature) (inp->sctp_features &= ~feature)
   48 #define sctp_is_feature_on(inp, feature) ((inp->sctp_features & feature) == feature)
   49 #define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0)
   50 
   51 
   52 /* managing mobility_feature in inpcb (by micchie) */
   53 #define sctp_mobility_feature_on(inp, feature)  (inp->sctp_mobility_features |= feature)
   54 #define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature)
   55 #define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature)
   56 #define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0)
   57 
   58 #define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND))
   59 
   60 #define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0))
   61 
   62 #define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0))
   63 
   64 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0)
   65 
   66 /*
   67  * I tried to cache the readq entries at one point. But the reality
   68  * is that it did not add any performance since this meant we had to
   69  * lock the STCB on read. And at that point once you have to do an
   70  * extra lock, it really does not matter if the lock is in the ZONE
   71  * stuff or in our code. Note that this same problem would occur with
   72  * an mbuf cache as well so it is not really worth doing, at least
   73  * right now :-D
   74  */
   75 
   76 #define sctp_free_a_readq(_stcb, _readq) { \
   77         SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \
   78         SCTP_DECR_READQ_COUNT(); \
   79 }
   80 
   81 #define sctp_alloc_a_readq(_stcb, _readq) { \
   82         (_readq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_readq), struct sctp_queued_to_read); \
   83         if ((_readq)) { \
   84              SCTP_INCR_READQ_COUNT(); \
   85         } \
   86 }
   87 
   88 #define sctp_free_a_strmoq(_stcb, _strmoq) { \
   89         SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), (_strmoq)); \
   90         SCTP_DECR_STRMOQ_COUNT(); \
   91 }
   92 
   93 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
   94         (_strmoq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_strmoq), struct sctp_stream_queue_pending); \
   95         if ((_strmoq)) { \
   96                 SCTP_INCR_STRMOQ_COUNT(); \
   97         } \
   98 }
   99 
  100 
  101 #define sctp_free_a_chunk(_stcb, _chk) { \
  102         if(_stcb) { \
  103           SCTP_TCB_LOCK_ASSERT((_stcb)); \
  104           if ((_chk)->whoTo) { \
  105                   sctp_free_remote_addr((_chk)->whoTo); \
  106                   (_chk)->whoTo = NULL; \
  107           } \
  108           if (((_stcb)->asoc.free_chunk_cnt > SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit)) || \
  109                (SCTP_BASE_INFO(ipi_free_chunks) > SCTP_BASE_SYSCTL(sctp_system_free_resc_limit))) { \
  110                 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
  111                 SCTP_DECR_CHK_COUNT(); \
  112           } else { \
  113                 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
  114                 (_stcb)->asoc.free_chunk_cnt++; \
  115                 atomic_add_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
  116           } \
  117         } else { \
  118                 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
  119                 SCTP_DECR_CHK_COUNT(); \
  120         } \
  121 }
  122 
  123 #define sctp_alloc_a_chunk(_stcb, _chk) { \
  124         if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks))  { \
  125                 (_chk) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_chunk), struct sctp_tmit_chunk); \
  126                 if ((_chk)) { \
  127                         SCTP_INCR_CHK_COUNT(); \
  128                         (_chk)->whoTo = NULL; \
  129                 } \
  130         } else { \
  131                 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
  132                 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
  133                 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
  134                 SCTP_STAT_INCR(sctps_cached_chk); \
  135                 (_stcb)->asoc.free_chunk_cnt--; \
  136         } \
  137 }
  138 
  139 
  140 
  141 #define sctp_free_remote_addr(__net) { \
  142         if ((__net)) {  \
  143                 if (atomic_fetchadd_int(&(__net)->ref_count, -1) == 1) { \
  144                         (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \
  145                         (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \
  146                         (void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \
  147                         if ((__net)->ro.ro_rt) { \
  148                                 RTFREE((__net)->ro.ro_rt); \
  149                                 (__net)->ro.ro_rt = NULL; \
  150                         } \
  151                         if ((__net)->src_addr_selected) { \
  152                                 sctp_free_ifa((__net)->ro._s_addr); \
  153                                 (__net)->ro._s_addr = NULL; \
  154                         } \
  155                         (__net)->src_addr_selected = 0; \
  156                         (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \
  157                         SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \
  158                         SCTP_DECR_RADDR_COUNT(); \
  159                 } \
  160         } \
  161 }
  162 
  163 #define sctp_sbfree(ctl, stcb, sb, m) { \
  164         uint32_t val; \
  165         val = atomic_fetchadd_int(&(sb)->sb_cc,-(SCTP_BUF_LEN((m)))); \
  166         if (val < SCTP_BUF_LEN((m))) { \
  167            panic("sb_cc goes negative"); \
  168         } \
  169         val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \
  170         if (val < MSIZE) { \
  171             panic("sb_mbcnt goes negative"); \
  172         } \
  173         if (((ctl)->do_not_ref_stcb == 0) && stcb) {\
  174           val = atomic_fetchadd_int(&(stcb)->asoc.sb_cc,-(SCTP_BUF_LEN((m)))); \
  175           if (val < SCTP_BUF_LEN((m))) {\
  176              panic("stcb->sb_cc goes negative"); \
  177           } \
  178           val = atomic_fetchadd_int(&(stcb)->asoc.my_rwnd_control_len,-(MSIZE)); \
  179           if (val < MSIZE) { \
  180              panic("asoc->mbcnt goes negative"); \
  181           } \
  182         } \
  183         if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
  184             SCTP_BUF_TYPE(m) != MT_OOBDATA) \
  185                 atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
  186 }
  187 
  188 
  189 #define sctp_sballoc(stcb, sb, m) { \
  190         atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \
  191         atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
  192         if (stcb) { \
  193                 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
  194                 atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
  195         } \
  196         if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
  197             SCTP_BUF_TYPE(m) != MT_OOBDATA) \
  198                 atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
  199 }
  200 
  201 
  202 #define sctp_ucount_incr(val) { \
  203         val++; \
  204 }
  205 
  206 #define sctp_ucount_decr(val) { \
  207         if (val > 0) { \
  208                 val--; \
  209         } else { \
  210                 val = 0; \
  211         } \
  212 }
  213 
  214 #define sctp_mbuf_crush(data) do { \
  215         struct mbuf *_m; \
  216         _m = (data); \
  217         while(_m && (SCTP_BUF_LEN(_m) == 0)) { \
  218                 (data)  = SCTP_BUF_NEXT(_m); \
  219                 SCTP_BUF_NEXT(_m) = NULL; \
  220                 sctp_m_free(_m); \
  221                 _m = (data); \
  222         } \
  223 } while (0)
  224 
  225 #define sctp_flight_size_decrease(tp1) do { \
  226         if (tp1->whoTo->flight_size >= tp1->book_size) \
  227                 tp1->whoTo->flight_size -= tp1->book_size; \
  228         else \
  229                 tp1->whoTo->flight_size = 0; \
  230 } while (0)
  231 
  232 #define sctp_flight_size_increase(tp1) do { \
  233        (tp1)->whoTo->flight_size += (tp1)->book_size; \
  234 } while (0)
  235 
  236 #ifdef SCTP_FS_SPEC_LOG
  237 #define sctp_total_flight_decrease(stcb, tp1) do { \
  238         if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
  239                 stcb->asoc.fs_index = 0;\
  240         stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
  241         stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
  242         stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
  243         stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
  244         stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \
  245         stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \
  246         stcb->asoc.fs_index++; \
  247         tp1->window_probe = 0; \
  248         if (stcb->asoc.total_flight >= tp1->book_size) { \
  249                 stcb->asoc.total_flight -= tp1->book_size; \
  250                 if (stcb->asoc.total_flight_count > 0) \
  251                         stcb->asoc.total_flight_count--; \
  252         } else { \
  253                 stcb->asoc.total_flight = 0; \
  254                 stcb->asoc.total_flight_count = 0; \
  255         } \
  256 } while (0)
  257 
  258 #define sctp_total_flight_increase(stcb, tp1) do { \
  259         if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
  260                 stcb->asoc.fs_index = 0;\
  261         stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
  262         stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
  263         stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
  264         stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
  265         stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \
  266         stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \
  267         stcb->asoc.fs_index++; \
  268        (stcb)->asoc.total_flight_count++; \
  269        (stcb)->asoc.total_flight += (tp1)->book_size; \
  270 } while (0)
  271 
  272 #else
  273 
  274 #define sctp_total_flight_decrease(stcb, tp1) do { \
  275         if (stcb->asoc.total_flight >= tp1->book_size) { \
  276                 stcb->asoc.total_flight -= tp1->book_size; \
  277                 if (stcb->asoc.total_flight_count > 0) \
  278                         stcb->asoc.total_flight_count--; \
  279         } else { \
  280                 stcb->asoc.total_flight = 0; \
  281                 stcb->asoc.total_flight_count = 0; \
  282         } \
  283 } while (0)
  284 
  285 #define sctp_total_flight_increase(stcb, tp1) do { \
  286        (stcb)->asoc.total_flight_count++; \
  287        (stcb)->asoc.total_flight += (tp1)->book_size; \
  288 } while (0)
  289 
  290 #endif
  291 
  292 
  293 struct sctp_nets;
  294 struct sctp_inpcb;
  295 struct sctp_tcb;
  296 struct sctphdr;
  297 
  298 
  299 void sctp_close(struct socket *so);
  300 int sctp_disconnect(struct socket *so);
  301 
  302 void sctp_ctlinput __P((int, struct sockaddr *, void *));
  303 int sctp_ctloutput __P((struct socket *, struct sockopt *));
  304 void sctp_input_with_port __P((struct mbuf *, int, uint16_t));
  305 void sctp_input __P((struct mbuf *, int));
  306 void sctp_pathmtu_adjustment __P((struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint16_t));
  307 void sctp_drain __P((void));
  308 void sctp_init __P((void));
  309 
  310 void sctp_finish(void);
  311 
  312 int sctp_flush(struct socket *, int);
  313 int sctp_shutdown __P((struct socket *));
  314 void sctp_notify 
  315 __P((struct sctp_inpcb *, struct ip *ip, struct sctphdr *,
  316     struct sockaddr *, struct sctp_tcb *,
  317     struct sctp_nets *));
  318 
  319         int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
  320         int, int, struct proc *);
  321 
  322 /* can't use sctp_assoc_t here */
  323         int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
  324 
  325         int sctp_ingetaddr(struct socket *,
  326         struct sockaddr **
  327 );
  328 
  329         int sctp_peeraddr(struct socket *,
  330         struct sockaddr **
  331 );
  332 
  333         int sctp_listen(struct socket *, int, struct thread *);
  334 
  335         int sctp_accept(struct socket *, struct sockaddr **);
  336 
  337 #endif                          /* _KERNEL */
  338 
  339 #endif                          /* !_NETINET_SCTP_VAR_H_ */

Cache object: 0251a07c3992e05c5d38781710d0d615

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.