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      1 /*-
      2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
      3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
      4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions are met:
      8  *
      9  * a) Redistributions of source code must retain the above copyright notice,
     10  *    this list of conditions and the following disclaimer.
     11  *
     12  * b) Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in
     14  *    the documentation and/or other materials provided with the distribution.
     15  *
     16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
     17  *    contributors may be used to endorse or promote products derived
     18  *    from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     30  * THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifdef __FreeBSD__
     34 #include <sys/cdefs.h>
     35 __FBSDID("$FreeBSD: head/sys/netinet/sctp_output.h 246595 2013-02-09 17:26:14Z tuexen $");
     36 #endif
     37 
     38 #ifndef _NETINET_SCTP_OUTPUT_H_
     39 #define _NETINET_SCTP_OUTPUT_H_
     40 
     41 #include <netinet/sctp_header.h>
     42 
     43 #if defined(_KERNEL) || defined(__Userspace__)
     44 
     45 
     46 struct mbuf *
     47 sctp_add_addresses_to_i_ia(struct sctp_inpcb *inp,
     48                            struct sctp_tcb *stcb,
     49 			   struct sctp_scoping *scope,
     50 			   struct mbuf *m_at,
     51 			   int cnt_inits_to,
     52 			   uint16_t *padding_len, uint16_t *chunk_len);
     53 
     54 
     55 int sctp_is_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
     56 
     57 
     58 int
     59 sctp_is_address_in_scope(struct sctp_ifa *ifa,
     60                          struct sctp_scoping *scope,
     61 			 int do_update);
     62 
     63 int
     64 sctp_is_addr_in_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa);
     65 
     66 struct sctp_ifa *
     67 sctp_source_address_selection(struct sctp_inpcb *inp,
     68 			      struct sctp_tcb *stcb,
     69 			      sctp_route_t *ro, struct sctp_nets *net,
     70 			      int non_asoc_addr_ok, uint32_t vrf_id);
     71 
     72 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Userspace__)
     73 int
     74 sctp_v6src_match_nexthop(struct sockaddr_in6 *src6, sctp_route_t *ro);
     75 int
     76 sctp_v4src_match_nexthop(struct sctp_ifa *sifa, sctp_route_t *ro);
     77 #endif
     78 
     79 void sctp_send_initiate(struct sctp_inpcb *, struct sctp_tcb *, int
     80 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
     81     SCTP_UNUSED
     82 #endif
     83     );
     84 
     85 void
     86 sctp_send_initiate_ack(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *,
     87                        int, int,
     88                        struct sockaddr *, struct sockaddr *,
     89                        struct sctphdr *, struct sctp_init_chunk *,
     90 #if defined(__FreeBSD__)
     91                        uint8_t, uint32_t,
     92 #endif
     93                        uint32_t, uint16_t, int);
     94 
     95 struct mbuf *
     96 sctp_arethere_unrecognized_parameters(struct mbuf *, int, int *,
     97 				      struct sctp_chunkhdr *, int *);
     98 void sctp_queue_op_err(struct sctp_tcb *, struct mbuf *);
     99 
    100 int
    101 sctp_send_cookie_echo(struct mbuf *, int, struct sctp_tcb *,
    102     struct sctp_nets *);
    103 
    104 void sctp_send_cookie_ack(struct sctp_tcb *);
    105 
    106 void
    107 sctp_send_heartbeat_ack(struct sctp_tcb *, struct mbuf *, int, int,
    108     struct sctp_nets *);
    109 
    110 void
    111 sctp_remove_from_wheel(struct sctp_tcb *stcb,
    112 					   struct sctp_association *asoc,
    113 					   struct sctp_stream_out *strq, int holds_lock);
    114 
    115 
    116 void sctp_send_shutdown(struct sctp_tcb *, struct sctp_nets *);
    117 
    118 void sctp_send_shutdown_ack(struct sctp_tcb *, struct sctp_nets *);
    119 
    120 void sctp_send_shutdown_complete(struct sctp_tcb *, struct sctp_nets *, int);
    121 
    122 void sctp_send_shutdown_complete2(struct sockaddr *, struct sockaddr *,
    123                                   struct sctphdr *,
    124 #if defined(__FreeBSD__)
    125                                   uint8_t, uint32_t,
    126 #endif
    127                                   uint32_t, uint16_t);
    128 
    129 void sctp_send_asconf(struct sctp_tcb *, struct sctp_nets *, int addr_locked);
    130 
    131 void sctp_send_asconf_ack(struct sctp_tcb *);
    132 
    133 int sctp_get_frag_point(struct sctp_tcb *, struct sctp_association *);
    134 
    135 void sctp_toss_old_cookies(struct sctp_tcb *, struct sctp_association *);
    136 
    137 void sctp_toss_old_asconf(struct sctp_tcb *);
    138 
    139 void sctp_fix_ecn_echo(struct sctp_association *);
    140 
    141 void sctp_move_chunks_from_net(struct sctp_tcb *stcb, struct sctp_nets *net);
    142 
    143 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
    144 int
    145 sctp_output(struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
    146     struct mbuf *, struct thread *, int);
    147 #elif defined(__Windows__)
    148 sctp_output(struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
    149     struct mbuf *, PKTHREAD, int);
    150 #else
    151 #if defined(__Userspace__)
    152 /* sctp_output is called bu sctp_sendm. Not using sctp_sendm for __Userspace__ */
    153 #endif
    154 int
    155 sctp_output(struct sctp_inpcb *,
    156 #if defined(__Panda__)
    157     pakhandle_type,
    158 #else
    159     struct mbuf *,
    160 #endif
    161     struct sockaddr *,
    162 #if defined(__Panda__)
    163     pakhandle_type,
    164 #else
    165     struct mbuf *,
    166 #endif
    167     struct proc *, int);
    168 #endif
    169 
    170 void sctp_chunk_output(struct sctp_inpcb *, struct sctp_tcb *, int, int
    171 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
    172     SCTP_UNUSED
    173 #endif
    174     );
    175 void sctp_send_abort_tcb(struct sctp_tcb *, struct mbuf *, int
    176 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
    177     SCTP_UNUSED
    178 #endif
    179     );
    180 
    181 void send_forward_tsn(struct sctp_tcb *, struct sctp_association *);
    182 
    183 void sctp_send_sack(struct sctp_tcb *, int);
    184 
    185 void sctp_send_hb(struct sctp_tcb *, struct sctp_nets *, int);
    186 
    187 void sctp_send_ecn_echo(struct sctp_tcb *, struct sctp_nets *, uint32_t);
    188 
    189 
    190 void
    191 sctp_send_packet_dropped(struct sctp_tcb *, struct sctp_nets *, struct mbuf *,
    192     int, int, int);
    193 
    194 
    195 
    196 void sctp_send_cwr(struct sctp_tcb *, struct sctp_nets *, uint32_t, uint8_t);
    197 
    198 
    199 void
    200 sctp_add_stream_reset_out(struct sctp_tmit_chunk *,
    201                           int, uint16_t *, uint32_t, uint32_t, uint32_t);
    202 
    203 void
    204 sctp_add_stream_reset_result(struct sctp_tmit_chunk *, uint32_t, uint32_t);
    205 
    206 void
    207 sctp_add_stream_reset_result_tsn(struct sctp_tmit_chunk *,
    208                                  uint32_t, uint32_t, uint32_t, uint32_t);
    209 
    210 int
    211 sctp_send_str_reset_req(struct sctp_tcb *, int , uint16_t *, uint8_t, uint8_t,
    212 			uint8_t, uint8_t, uint16_t, uint16_t, uint8_t);
    213 
    214 void
    215 sctp_send_abort(struct mbuf *, int, struct sockaddr *, struct sockaddr *,
    216                 struct sctphdr *, uint32_t, struct mbuf *,
    217 #if defined(__FreeBSD__)
    218                 uint8_t, uint32_t,
    219 #endif
    220                 uint32_t, uint16_t);
    221 
    222 void sctp_send_operr_to(struct sockaddr *, struct sockaddr *,
    223                         struct sctphdr *, uint32_t, struct mbuf *,
    224 #if defined(__FreeBSD__)
    225                         uint8_t, uint32_t,
    226 #endif
    227                         uint32_t, uint16_t);
    228 
    229 #endif /* _KERNEL || __Userspace__ */
    230 
    231 #if defined(_KERNEL) || defined(__Userspace__)
    232 int
    233 sctp_sosend(struct socket *so,
    234     struct sockaddr *addr,
    235     struct uio *uio,
    236 #ifdef __Panda__
    237     pakhandle_type top,
    238     pakhandle_type control,
    239 #else
    240     struct mbuf *top,
    241     struct mbuf *control,
    242 #endif
    243 #if defined(__APPLE__) || defined(__Panda__)
    244     int flags
    245 #else
    246     int flags,
    247 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
    248     struct thread *p
    249 #elif defined(__Windows__)
    250     PKTHREAD p
    251 #else
    252 #if defined(__Userspace__)
    253     /* proc is a dummy in __Userspace__ and will not be passed to sctp_lower_sosend */
    254 #endif
    255     struct proc *p
    256 #endif
    257 #endif
    258 );
    259 
    260 #endif
    261 #endif
    262 
    263