/*- * Copyright (c) 2001-2006, 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_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $ */ #include __FBSDID("$FreeBSD$"); #ifndef __sctp_pcb_h__ #define __sctp_pcb_h__ /* * We must have V6 so the size of the proto can be calculated. Otherwise we * would not allocate enough for Net/Open BSD :-< */ #if defined(_KERNEL) #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #ifndef in6pcb #define in6pcb inpcb #endif #include #include #include LIST_HEAD(sctppcbhead, sctp_inpcb); LIST_HEAD(sctpasochead, sctp_tcb); LIST_HEAD(sctpladdr, sctp_laddr); LIST_HEAD(sctpvtaghead, sctp_tagblock); TAILQ_HEAD(sctp_readhead, sctp_queued_to_read); TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending); #include #include #include /* * PCB flags (in sctp_flags bitmask) */ #define SCTP_PCB_FLAGS_UDPTYPE 0x00000001 #define SCTP_PCB_FLAGS_TCPTYPE 0x00000002 #define SCTP_PCB_FLAGS_BOUNDALL 0x00000004 #define SCTP_PCB_FLAGS_ACCEPTING 0x00000008 #define SCTP_PCB_FLAGS_UNBOUND 0x00000010 #define SCTP_PCB_FLAGS_CLOSE_IP 0x00040000 #define SCTP_PCB_FLAGS_WAS_CONNECTED 0x00080000 #define SCTP_PCB_FLAGS_WAS_ABORTED 0x00100000 /* TCP model support */ #define SCTP_PCB_FLAGS_CONNECTED 0x00200000 #define SCTP_PCB_FLAGS_IN_TCPPOOL 0x00400000 #define SCTP_PCB_FLAGS_DONT_WAKE 0x00800000 #define SCTP_PCB_FLAGS_WAKEOUTPUT 0x01000000 #define SCTP_PCB_FLAGS_WAKEINPUT 0x02000000 #define SCTP_PCB_FLAGS_BOUND_V6 0x04000000 #define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4 0x08000000 #define SCTP_PCB_FLAGS_BLOCKING_IO 0x10000000 #define SCTP_PCB_FLAGS_SOCKET_GONE 0x20000000 #define SCTP_PCB_FLAGS_SOCKET_ALLGONE 0x40000000 /* flags to copy to new PCB */ #define SCTP_PCB_COPY_FLAGS 0x0e000004 /* * PCB Features (in sctp_features bitmask) */ #define SCTP_PCB_FLAGS_EXT_RCVINFO 0x00000004 #define SCTP_PCB_FLAGS_DONOT_HEARTBEAT 0x00000008 #define SCTP_PCB_FLAGS_FRAG_INTERLEAVE 0x00000010 #define SCTP_PCB_FLAGS_DO_ASCONF 0x00000020 #define SCTP_PCB_FLAGS_AUTO_ASCONF 0x00000040 /* socket options */ #define SCTP_PCB_FLAGS_NODELAY 0x00000100 #define SCTP_PCB_FLAGS_AUTOCLOSE 0x00000200 #define SCTP_PCB_FLAGS_RECVDATAIOEVNT 0x00000400 #define SCTP_PCB_FLAGS_RECVASSOCEVNT 0x00000800 #define SCTP_PCB_FLAGS_RECVPADDREVNT 0x00001000 #define SCTP_PCB_FLAGS_RECVPEERERR 0x00002000 #define SCTP_PCB_FLAGS_RECVSENDFAILEVNT 0x00004000 #define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT 0x00008000 #define SCTP_PCB_FLAGS_ADAPTATIONEVNT 0x00010000 #define SCTP_PCB_FLAGS_PDAPIEVNT 0x00020000 #define SCTP_PCB_FLAGS_AUTHEVNT 0x00040000 #define SCTP_PCB_FLAGS_STREAM_RESETEVNT 0x00080000 #define SCTP_PCB_FLAGS_NO_FRAGMENT 0x00100000 #define SCTP_PCB_FLAGS_EXPLICIT_EOR 0x00200000 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) struct sctp_laddr { LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ struct ifaddr *ifa; int action; /* Only used in delayed asconf stuff */ }; struct sctp_block_entry { int error; }; struct sctp_timewait { uint32_t tv_sec_at_expire; /* the seconds from boot to expire */ uint32_t v_tag; /* the vtag that can not be reused */ }; struct sctp_tagblock { LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; }; struct sctp_epinfo { struct sctpasochead *sctp_asochash; u_long hashasocmark; struct sctppcbhead *sctp_ephash; u_long hashmark; struct sctpasochead *sctp_restarthash; u_long hashrestartmark; /* * The TCP model represents a substantial overhead in that we get an * additional hash table to keep explicit connections in. The * listening TCP endpoint will exist in the usual ephash above and * accept only INIT's. It will be incapable of sending off an INIT. * When a dg arrives we must look in the normal ephash. If we find a * TCP endpoint that will tell us to go to the specific endpoint * hash and re-hash to find the right assoc/socket. If we find a UDP * model socket we then must complete the lookup. If this fails, * i.e. no association can be found then we must continue to see if * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket * acts like a TCP model connected socket). */ struct sctppcbhead *sctp_tcpephash; u_long hashtcpmark; uint32_t hashtblsize; struct sctppcbhead listhead; struct sctpladdr addr_wq; struct sctpiterators iteratorhead; /* ep zone info */ sctp_zone_t ipi_zone_ep; sctp_zone_t ipi_zone_asoc; sctp_zone_t ipi_zone_laddr; sctp_zone_t ipi_zone_net; sctp_zone_t ipi_zone_chunk; sctp_zone_t ipi_zone_readq; sctp_zone_t ipi_zone_strmoq; struct mtx ipi_ep_mtx; struct mtx it_mtx; struct mtx ipi_addr_mtx; struct mtx timer_mtx; uint32_t ipi_count_ep; /* assoc/tcb zone info */ uint32_t ipi_count_asoc; /* local addrlist zone info */ uint32_t ipi_count_laddr; /* remote addrlist zone info */ uint32_t ipi_count_raddr; /* chunk structure list for output */ uint32_t ipi_count_chunk; /* socket queue zone info */ uint32_t ipi_count_readq; /* socket queue zone info */ uint32_t ipi_count_strmoq; /* system wide number of free chunks hanging around */ uint32_t ipi_free_chunks; uint32_t ipi_free_strmoq; struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE]; struct sctp_timer addr_wq_timer; /* for port allocations */ uint16_t lastport; uint16_t lastlow; uint16_t lasthi; }; extern struct sctpstat sctpstat; /* * Here we have all the relevant information for each SCTP entity created. We * will need to modify this as approprate. We also need to figure out how to * access /dev/random. */ struct sctp_pcb { unsigned int time_of_secret_change; /* number of seconds from * timeval.tv_sec */ uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; unsigned int size_of_a_cookie; unsigned int sctp_timeoutticks[SCTP_NUM_TMRS]; unsigned int sctp_minrto; unsigned int sctp_maxrto; unsigned int initial_rto; int initial_init_rto_max; uint32_t sctp_sws_sender; uint32_t sctp_sws_receiver; /* authentication related fields */ struct sctp_keyhead shared_keys; sctp_auth_chklist_t *local_auth_chunks; sctp_hmaclist_t *local_hmacs; uint16_t default_keyid; /* various thresholds */ /* Max times I will init at a guy */ uint16_t max_init_times; /* Max times I will send before we consider someone dead */ uint16_t max_send_times; uint16_t def_net_failure; /* number of streams to pre-open on a association */ uint16_t pre_open_stream_count; uint16_t max_open_streams_intome; /* random number generator */ uint32_t random_counter; uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE]; uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE]; /* * This timer is kept running per endpoint. When it fires it will * change the secret key. The default is once a hour */ struct sctp_timer signature_change; int def_cookie_life; /* defaults to 0 */ int auto_close_time; uint32_t initial_sequence_debug; uint32_t adaptation_layer_indicator; char store_at; uint8_t max_burst; char current_secret_number; char last_secret_number; }; #ifndef SCTP_ALIGNMENT #define SCTP_ALIGNMENT 32 #endif #ifndef SCTP_ALIGNM1 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) #endif #define sctp_lport ip_inp.inp.inp_lport struct sctp_inpcb { /* * put an inpcb in front of it all, kind of a waste but we need to * for compatability with all the other stuff. */ union { struct inpcb inp; char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) & ~SCTP_ALIGNM1]; } ip_inp; /* Socket buffer lock protects read_queue and of course sb_cc */ struct sctp_readhead read_queue; LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ /* hash of all endpoints for model */ LIST_ENTRY(sctp_inpcb) sctp_hash; /* count of local addresses bound, 0 if bound all */ int laddr_count; /* list of addrs in use by the EP */ struct sctpladdr sctp_addr_list; /* used for source address selection rotation */ struct sctp_laddr *next_addr_touse; struct ifnet *next_ifn_touse; /* back pointer to our socket */ struct socket *sctp_socket; uint32_t sctp_flags; /* INP state flag set */ uint32_t sctp_features; /* Feature flags */ struct sctp_pcb sctp_ep;/* SCTP ep data */ /* head of the hash of all associations */ struct sctpasochead *sctp_tcbhash; u_long sctp_hashmark; /* head of the list of all associations */ struct sctpasochead sctp_asoc_list; #ifdef SCTP_TRACK_FREED_ASOCS struct sctpasochead sctp_asoc_free_list; #endif struct sctp_iterator *inp_starting_point_for_iterator; uint32_t sctp_frag_point; uint32_t partial_delivery_point; uint32_t sctp_context; struct sctp_sndrcvinfo def_send; /* * These three are here for the sosend_dgram (pkt, pkt_last and * control). routine. However, I don't think anyone in the current * FreeBSD kernel calls this. So they are candidates with sctp_sendm * for de-supporting. */ struct mbuf *pkt, *pkt_last; struct mbuf *control; struct mtx inp_mtx; struct mtx inp_create_mtx; struct mtx inp_rdata_mtx; int32_t refcount; uint32_t total_sends; uint32_t total_recvs; uint32_t last_abort_code; uint32_t total_nospaces; }; struct sctp_tcb { struct socket *sctp_socket; /* back pointer to socket */ struct sctp_inpcb *sctp_ep; /* back pointer to ep */ LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash * table */ LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the * TCB's */ LIST_ENTRY(sctp_tcb) sctp_tcbrestarhash; /* next link in restart * hash table */ LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */ struct sctp_block_entry *block_entry; /* pointer locked by socket * send buffer */ struct sctp_association asoc; /* * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the * tcb_lock. Its special in this way to help avoid extra mutex calls * in the reading of data. */ uint32_t freed_by_sorcv_sincelast; uint32_t total_sends; uint32_t total_recvs; int freed_from_where; uint16_t rport; /* remote port in network format */ uint16_t resv; struct mtx tcb_mtx; struct mtx tcb_send_mtx; }; #include #if defined(_KERNEL) extern struct sctp_epinfo sctppcbinfo; extern int sctp_auto_asconf; int SCTP6_ARE_ADDR_EQUAL(struct in6_addr *a, struct in6_addr *b); void sctp_fill_pcbinfo(struct sctp_pcbinfo *); struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int); int sctp_inpcb_bind(struct socket *, struct sockaddr *, struct thread *); struct sctp_tcb * sctp_findassociation_addr(struct mbuf *, int, int, struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, struct sctp_nets **); struct sctp_tcb * sctp_findassociation_addr_sa(struct sockaddr *, struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int); void sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, struct sctp_tcb *); /* * For this call ep_addr, the to is the destination endpoint address of the * peer (relative to outbound). The from field is only used if the TCP model * is enabled and helps distingush amongst the subset bound (non-boundall). * The TCP model MAY change the actual ep field, this is why it is passed. */ struct sctp_tcb * sctp_findassociation_ep_addr(struct sctp_inpcb **, struct sockaddr *, struct sctp_nets **, struct sockaddr *, struct sctp_tcb *); struct sctp_tcb * sctp_findassociation_ep_asocid(struct sctp_inpcb *, sctp_assoc_t, int); struct sctp_tcb * sctp_findassociation_ep_asconf(struct mbuf *, int, int, struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **); int sctp_inpcb_alloc(struct socket *); int sctp_is_address_on_local_host(struct sockaddr *addr); void sctp_inpcb_free(struct sctp_inpcb *, int, int); struct sctp_tcb * sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, int, int *, uint32_t); int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int); int sctp_add_local_addr_ep(struct sctp_inpcb *, struct ifaddr *); int sctp_insert_laddr(struct sctpladdr *, struct ifaddr *); void sctp_remove_laddr(struct sctp_laddr *); int sctp_del_local_addr_ep(struct sctp_inpcb *, struct ifaddr *); int sctp_del_local_addr_ep_sa(struct sctp_inpcb *, struct sockaddr *); int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int); void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *); int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); void sctp_pcb_init(void); int sctp_add_local_addr_assoc(struct sctp_tcb *, struct ifaddr *); int sctp_del_local_addr_assoc(struct sctp_tcb *, struct ifaddr *); int sctp_del_local_addr_assoc_sa(struct sctp_tcb *, struct sockaddr *); int sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, int, struct sctphdr *, struct sockaddr *); int sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets *); int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *); /* void sctp_drain(void); */ int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *); /* * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg * indicates run on ONLY assoc's of the specified endpoint. */ int sctp_initiate_iterator(inp_func inpf, asoc_func af, uint32_t, uint32_t, uint32_t, void *, uint32_t, end_func ef, struct sctp_inpcb *, uint8_t co_off); #endif /* _KERNEL */ #endif /* !__sctp_pcb_h__ */