Squashed 'third_party/rawrtc/usrsctp/' content from commit bd1a92db3
Change-Id: If227cd6edd3243ac26044056b7427ae5bca71ef8
git-subtree-dir: third_party/rawrtc/usrsctp
git-subtree-split: bd1a92db338ba1e57453637959a127032bb566ff
diff --git a/usrsctplib/netinet/sctp_pcb.h b/usrsctplib/netinet/sctp_pcb.h
new file mode 100755
index 0000000..72309db
--- /dev/null
+++ b/usrsctplib/netinet/sctp_pcb.h
@@ -0,0 +1,910 @@
+/*-
+ * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
+ * Copyright (c) 2008-2012, by Michael Tuexen. 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.
+ */
+
+#ifdef __FreeBSD__
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/sys/netinet/sctp_pcb.h 310590 2016-12-26 11:06:41Z tuexen $");
+#endif
+
+#ifndef _NETINET_SCTP_PCB_H_
+#define _NETINET_SCTP_PCB_H_
+
+#include <netinet/sctp_os.h>
+#include <netinet/sctp.h>
+#include <netinet/sctp_constants.h>
+#include <netinet/sctp_sysctl.h>
+
+LIST_HEAD(sctppcbhead, sctp_inpcb);
+LIST_HEAD(sctpasochead, sctp_tcb);
+LIST_HEAD(sctpladdr, sctp_laddr);
+LIST_HEAD(sctpvtaghead, sctp_tagblock);
+LIST_HEAD(sctp_vrflist, sctp_vrf);
+LIST_HEAD(sctp_ifnlist, sctp_ifn);
+LIST_HEAD(sctp_ifalist, sctp_ifa);
+TAILQ_HEAD(sctp_readhead, sctp_queued_to_read);
+TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending);
+
+#include <netinet/sctp_structs.h>
+#include <netinet/sctp_auth.h>
+
+#define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask)
+#define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask)
+#define MAXLEN_MBUF_CHAIN 32
+
+struct sctp_vrf {
+ LIST_ENTRY (sctp_vrf) next_vrf;
+ struct sctp_ifalist *vrf_addr_hash;
+ struct sctp_ifnlist ifnlist;
+ uint32_t vrf_id;
+ uint32_t tbl_id_v4; /* default v4 table id */
+ uint32_t tbl_id_v6; /* default v6 table id */
+ uint32_t total_ifa_count;
+ u_long vrf_addr_hashmark;
+ uint32_t refcount;
+};
+
+struct sctp_ifn {
+ struct sctp_ifalist ifalist;
+ struct sctp_vrf *vrf;
+ LIST_ENTRY(sctp_ifn) next_ifn;
+ LIST_ENTRY(sctp_ifn) next_bucket;
+ void *ifn_p; /* never access without appropriate lock */
+ uint32_t ifn_mtu;
+ uint32_t ifn_type;
+ uint32_t ifn_index; /* shorthand way to look at ifn for reference */
+ uint32_t refcount; /* number of reference held should be >= ifa_count */
+ uint32_t ifa_count; /* IFA's we hold (in our list - ifalist)*/
+ uint32_t num_v6; /* number of v6 addresses */
+ uint32_t num_v4; /* number of v4 addresses */
+ uint32_t registered_af; /* registered address family for i/f events */
+ char ifn_name[SCTP_IFNAMSIZ];
+};
+
+/* SCTP local IFA flags */
+#define SCTP_ADDR_VALID 0x00000001 /* its up and active */
+#define SCTP_BEING_DELETED 0x00000002 /* being deleted,
+ * when refcount = 0. Note
+ * that it is pulled from the ifn list
+ * and ifa_p is nulled right away but
+ * it cannot be freed until the last *net
+ * pointing to it is deleted.
+ */
+#define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */
+#define SCTP_ADDR_IFA_UNUSEABLE 0x00000008
+
+struct sctp_ifa {
+ LIST_ENTRY(sctp_ifa) next_ifa;
+ LIST_ENTRY(sctp_ifa) next_bucket;
+ struct sctp_ifn *ifn_p; /* back pointer to parent ifn */
+ void *ifa; /* pointer to ifa, needed for flag
+ * update for that we MUST lock
+ * appropriate locks. This is for V6.
+ */
+ union sctp_sockstore address;
+ uint32_t refcount; /* number of folks referring to this */
+ uint32_t flags;
+ uint32_t localifa_flags;
+ uint32_t vrf_id; /* vrf_id of this addr (for deleting) */
+ uint8_t src_is_loop;
+ uint8_t src_is_priv;
+ uint8_t src_is_glob;
+ uint8_t resv;
+};
+
+struct sctp_laddr {
+ LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */
+ struct sctp_ifa *ifa;
+ uint32_t action; /* Used during asconf and adding
+ * if no-zero src-addr selection will
+ * not consider this address.
+ */
+ struct timeval start_time; /* time when this address was created */
+};
+
+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 */
+ uint16_t lport; /* the local port used in vtag */
+ uint16_t rport; /* the remote port used in vtag */
+};
+
+struct sctp_tagblock {
+ LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock;
+ struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK];
+};
+
+
+struct sctp_epinfo {
+#if defined(__FreeBSD__)
+#ifdef INET
+ struct socket *udp4_tun_socket;
+#endif
+#ifdef INET6
+ struct socket *udp6_tun_socket;
+#endif
+#endif
+ struct sctpasochead *sctp_asochash;
+ u_long hashasocmark;
+
+ struct sctppcbhead *sctp_ephash;
+ u_long hashmark;
+
+ /*-
+ * 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 sctp_vrflist *sctp_vrfhash;
+ u_long hashvrfmark;
+
+ struct sctp_ifnlist *vrf_ifn_hash;
+ u_long vrf_ifn_hashmark;
+
+ struct sctppcbhead listhead;
+ struct sctpladdr addr_wq;
+
+#if defined(__APPLE__)
+ struct inpcbhead inplisthead;
+ struct inpcbinfo sctbinfo;
+#endif
+ /* 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;
+ sctp_zone_t ipi_zone_asconf;
+ sctp_zone_t ipi_zone_asconf_ack;
+
+#if defined(__FreeBSD__) && __FreeBSD_version >= 503000
+#if __FreeBSD_version <= 602000
+ struct mtx ipi_ep_mtx;
+#else
+ struct rwlock ipi_ep_mtx;
+#endif
+ struct mtx ipi_iterator_wq_mtx;
+#if __FreeBSD_version <= 602000
+ struct mtx ipi_addr_mtx;
+#else
+ struct rwlock ipi_addr_mtx;
+#endif
+ struct mtx ipi_pktlog_mtx;
+ struct mtx wq_addr_mtx;
+#elif defined(SCTP_PROCESS_LEVEL_LOCKS)
+ userland_mutex_t ipi_ep_mtx;
+ userland_mutex_t ipi_addr_mtx;
+ userland_mutex_t ipi_count_mtx;
+ userland_mutex_t ipi_pktlog_mtx;
+ userland_mutex_t wq_addr_mtx;
+#elif defined(__APPLE__)
+#ifdef _KERN_LOCKS_H_
+ lck_mtx_t *ipi_addr_mtx;
+ lck_mtx_t *ipi_count_mtx;
+ lck_mtx_t *ipi_pktlog_mtx;
+ lck_mtx_t *logging_mtx;
+ lck_mtx_t *wq_addr_mtx;
+#else
+ void *ipi_count_mtx;
+ void *logging_mtx;
+#endif /* _KERN_LOCKS_H_ */
+#elif defined(__Windows__)
+ struct rwlock ipi_ep_lock;
+ struct rwlock ipi_addr_lock;
+ struct spinlock ipi_pktlog_mtx;
+ struct rwlock wq_addr_mtx;
+#elif defined(__Userspace__)
+ /* TODO decide on __Userspace__ locks */
+#endif
+ 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;
+
+ /* Number of vrfs */
+ uint32_t ipi_count_vrfs;
+
+ /* Number of ifns */
+ uint32_t ipi_count_ifns;
+
+ /* Number of ifas */
+ uint32_t ipi_count_ifas;
+
+ /* 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];
+
+ /* address work queue handling */
+ struct sctp_timer addr_wq_timer;
+
+#if defined(_SCTP_NEEDS_CALLOUT_) || defined(_USER_SCTP_NEEDS_CALLOUT_)
+ struct calloutlist callqueue;
+#endif
+};
+
+
+struct sctp_base_info {
+ /* All static structures that
+ * anchor the system must be here.
+ */
+ struct sctp_epinfo sctppcbinfo;
+#if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
+ struct sctpstat *sctpstat;
+#else
+ struct sctpstat sctpstat;
+#endif
+ struct sctp_sysctl sctpsysctl;
+ uint8_t first_time;
+ char sctp_pcb_initialized;
+#if defined(SCTP_PACKET_LOGGING)
+ int packet_log_writers;
+ int packet_log_end;
+ uint8_t packet_log_buffer[SCTP_PACKET_LOG_SIZE];
+#endif
+#if defined(__APPLE__)
+ int sctp_main_timer_ticks;
+#endif
+#if defined(__Userspace__)
+ userland_mutex_t timer_mtx;
+ userland_thread_t timer_thread;
+ uint8_t timer_thread_should_exit;
+#if !defined(__Userspace_os_Windows)
+ pthread_mutexattr_t mtx_attr;
+#if defined(INET) || defined(INET6)
+ int userspace_route;
+ userland_thread_t recvthreadroute;
+#endif
+#endif
+#ifdef INET
+#if defined(__Userspace_os_Windows)
+ SOCKET userspace_rawsctp;
+ SOCKET userspace_udpsctp;
+#else
+ int userspace_rawsctp;
+ int userspace_udpsctp;
+#endif
+ userland_thread_t recvthreadraw;
+ userland_thread_t recvthreadudp;
+#if !defined(THREAD_SUPPORT)
+ struct mbuf **recvmbuf4;
+ int to_fill4;
+ struct mbuf **recvmbuf6;
+ int to_fill6;
+ struct mbuf **udp_recvmbuf4;
+ int udp_to_fill4;
+ struct mbuf **udp_recvmbuf6;
+ int udp_to_fill6;
+#if !defined(__Userspace_os_Windows)
+ struct iovec recv_iovec4[MAXLEN_MBUF_CHAIN];
+ struct iovec recv_iovec6[MAXLEN_MBUF_CHAIN];
+ struct iovec udp_recv_iovec4[MAXLEN_MBUF_CHAIN];
+ struct iovec udp_recv_iovec6[MAXLEN_MBUF_CHAIN];
+#else
+ WSABUF *rcv_iovec4;
+ WSABUF *rcv_iovec6;
+ WSABUF *udp_rcv_iovec4;
+ WSABUF *udp_rcv_iovec6;
+#endif
+#endif
+#endif
+#ifdef INET6
+#if defined(__Userspace_os_Windows)
+ SOCKET userspace_rawsctp6;
+ SOCKET userspace_udpsctp6;
+#else
+ int userspace_rawsctp6;
+ int userspace_udpsctp6;
+#endif
+ userland_thread_t recvthreadraw6;
+ userland_thread_t recvthreadudp6;
+#endif
+ int (*conn_output)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df);
+ void (*debug_printf)(const char *format, ...);
+ int crc32c_offloaded;
+#endif
+};
+
+/*-
+ * 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;
+
+ unsigned int sctp_sack_freq;
+ uint32_t sctp_sws_sender;
+ uint32_t sctp_sws_receiver;
+
+ uint32_t sctp_default_cc_module;
+ uint32_t sctp_default_ss_module;
+ /* 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;
+
+ uint16_t def_net_pf_threshold;
+
+ /* 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;
+
+ /* Zero copy full buffer timer */
+ struct sctp_timer zero_copy_timer;
+ /* Zero copy app to transport (sendq) read repulse timer */
+ struct sctp_timer zero_copy_sendq_timer;
+ uint32_t def_cookie_life;
+ /* defaults to 0 */
+ int auto_close_time;
+ uint32_t initial_sequence_debug;
+ uint32_t adaptation_layer_indicator;
+ uint8_t adaptation_layer_indicator_provided;
+ uint32_t store_at;
+ uint32_t max_burst;
+ uint32_t fr_max_burst;
+#ifdef INET6
+ uint32_t default_flowlabel;
+#endif
+ uint8_t default_dscp;
+ char current_secret_number;
+ char last_secret_number;
+ uint16_t port; /* remote UDP encapsulation port */
+};
+
+#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_pcbtsn_rlog {
+ uint32_t vtag;
+ uint16_t strm;
+ uint16_t seq;
+ uint16_t sz;
+ uint16_t flgs;
+};
+#define SCTP_READ_LOG_SIZE 135 /* we choose the number to make a pcb a page */
+
+
+struct sctp_inpcb {
+ /*-
+ * put an inpcb in front of it all, kind of a waste but we need to
+ * for compatibility with all the other stuff.
+ */
+ union {
+ struct inpcb inp;
+ char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) &
+ ~SCTP_ALIGNM1];
+ } ip_inp;
+
+#if defined(__APPLE__)
+ /* leave some space in case i386 inpcb is bigger than ppc */
+ uint8_t padding[128];
+#endif
+
+ /* 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, NULL if bound-all */
+ struct sctpladdr sctp_addr_list;
+ /* used for source address selection rotation when we are subset bound */
+ struct sctp_laddr *next_addr_touse;
+
+ /* back pointer to our socket */
+ struct socket *sctp_socket;
+ uint64_t sctp_features; /* Feature flags */
+ uint32_t sctp_flags; /* INP state flag set */
+ uint32_t sctp_mobility_features; /* Mobility 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;
+ uint32_t max_cwnd;
+ uint8_t local_strreset_support;
+ uint32_t sctp_cmt_on_off;
+ uint8_t ecn_supported;
+ uint8_t prsctp_supported;
+ uint8_t auth_supported;
+ uint8_t idata_supported;
+ uint8_t asconf_supported;
+ uint8_t reconfig_supported;
+ uint8_t nrsack_supported;
+ uint8_t pktdrop_supported;
+ struct sctp_nonpad_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.
+ */
+#ifdef __Panda__
+ pakhandle_type pak_to_read;
+ pakhandle_type pak_to_read_sendq;
+#endif
+ struct mbuf *pkt, *pkt_last;
+ struct mbuf *control;
+#if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
+#ifndef INP_IPV6
+#define INP_IPV6 0x1
+#endif
+#ifndef INP_IPV4
+#define INP_IPV4 0x2
+#endif
+ uint8_t inp_vflag;
+ /* TODO __Userspace__ where is our inp_vlag going to be? */
+ uint8_t inp_ip_ttl;
+ uint8_t inp_ip_tos; /* defined as macro in user_inpcb.h */
+ uint8_t inp_ip_resv;
+#endif
+#if defined(__FreeBSD__) && __FreeBSD_version >= 503000
+ struct mtx inp_mtx;
+ struct mtx inp_create_mtx;
+ struct mtx inp_rdata_mtx;
+ int32_t refcount;
+#elif defined(SCTP_PROCESS_LEVEL_LOCKS)
+ userland_mutex_t inp_mtx;
+ userland_mutex_t inp_create_mtx;
+ userland_mutex_t inp_rdata_mtx;
+ int32_t refcount;
+#elif defined(__APPLE__)
+#if defined(SCTP_APPLE_RWLOCK)
+ lck_rw_t *inp_mtx;
+#else
+ lck_mtx_t *inp_mtx;
+#endif
+ lck_mtx_t *inp_create_mtx;
+ lck_mtx_t *inp_rdata_mtx;
+#elif defined(__Windows__)
+ struct rwlock inp_lock;
+ struct spinlock inp_create_lock;
+ struct spinlock inp_rdata_lock;
+ int32_t refcount;
+#elif defined(__Userspace__)
+ /* TODO decide on __Userspace__ locks */
+ int32_t refcount;
+#endif
+#if defined(__APPLE__)
+ int32_t refcount;
+
+ uint32_t lock_caller1;
+ uint32_t lock_caller2;
+ uint32_t lock_caller3;
+ uint32_t unlock_caller1;
+ uint32_t unlock_caller2;
+ uint32_t unlock_caller3;
+ uint32_t getlock_caller1;
+ uint32_t getlock_caller2;
+ uint32_t getlock_caller3;
+ uint32_t gen_count;
+ uint32_t lock_gen_count;
+ uint32_t unlock_gen_count;
+ uint32_t getlock_gen_count;
+
+ uint32_t i_am_here_file;
+ uint32_t i_am_here_line;
+#endif
+ uint32_t def_vrf_id;
+ uint16_t fibnum;
+#ifdef SCTP_MVRF
+ uint32_t *m_vrf_ids;
+ uint32_t num_vrfs;
+ uint32_t vrf_size;
+#endif
+ uint32_t total_sends;
+ uint32_t total_recvs;
+ uint32_t last_abort_code;
+ uint32_t total_nospaces;
+ struct sctpasochead *sctp_asocidhash;
+ u_long hashasocidmark;
+ uint32_t sctp_associd_counter;
+
+#ifdef SCTP_ASOCLOG_OF_TSNS
+ struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE];
+ uint32_t readlog_index;
+#endif
+#if defined(__Userspace__)
+ void *ulp_info;
+ int (*recv_callback)(struct socket *, union sctp_sockstore, void *, size_t,
+ struct sctp_rcvinfo, int, void *);
+ uint32_t send_sb_threshold;
+ int (*send_callback)(struct socket *, uint32_t);
+#endif
+};
+
+#if defined(__Userspace__)
+int register_recv_cb (struct socket *,
+ int (*)(struct socket *, union sctp_sockstore, void *, size_t,
+ struct sctp_rcvinfo, int, void *));
+int register_send_cb (struct socket *, uint32_t, int (*)(struct socket *, uint32_t));
+int register_ulp_info (struct socket *, void *);
+
+#endif
+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_tcbasocidhash; /* next link in asocid
+ * 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;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 503000
+ struct mtx tcb_mtx;
+ struct mtx tcb_send_mtx;
+#elif defined(SCTP_PROCESS_LEVEL_LOCKS)
+ userland_mutex_t tcb_mtx;
+ userland_mutex_t tcb_send_mtx;
+#elif defined(__APPLE__)
+ lck_mtx_t* tcb_mtx;
+ lck_mtx_t* tcb_send_mtx;
+#elif defined(__Windows__)
+ struct spinlock tcb_lock;
+ struct spinlock tcb_send_lock;
+#elif defined(__Userspace__)
+ /* TODO decide on __Userspace__ locks */
+#endif
+#if defined(__APPLE__)
+ uint32_t caller1;
+ uint32_t caller2;
+ uint32_t caller3;
+#endif
+};
+
+
+#if defined(__FreeBSD__) && __FreeBSD_version >= 503000
+
+#include <netinet/sctp_lock_bsd.h>
+
+#elif defined(__APPLE__)
+/*
+ * Apple MacOS X 10.4 "Tiger"
+ */
+
+#include <netinet/sctp_lock_apple_fg.h>
+
+#elif defined(SCTP_PROCESS_LEVEL_LOCKS)
+
+#include <netinet/sctp_process_lock.h>
+
+#elif defined(__Windows__)
+
+#include <netinet/sctp_lock_windows.h>
+
+#elif defined(__Userspace__)
+
+#include <netinet/sctp_lock_userspace.h>
+
+#else
+/*
+ * Pre-5.x FreeBSD, and others.
+ */
+#include <netinet/sctp_lock_empty.h>
+#endif
+
+/* TODO where to put non-_KERNEL things for __Userspace__? */
+#if defined(_KERNEL) || defined(__Userspace__)
+
+/* Attention Julian, this is the extern that
+ * goes with the base info. sctp_pcb.c has
+ * the real definition.
+ */
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+VNET_DECLARE(struct sctp_base_info, system_base_info) ;
+#else
+extern struct sctp_base_info system_base_info;
+#endif
+
+#ifdef INET6
+int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b);
+#endif
+
+void sctp_fill_pcbinfo(struct sctp_pcbinfo *);
+
+struct sctp_ifn *
+sctp_find_ifn(void *ifn, uint32_t ifn_index);
+
+struct sctp_vrf *sctp_allocate_vrf(int vrfid);
+struct sctp_vrf *sctp_find_vrf(uint32_t vrfid);
+void sctp_free_vrf(struct sctp_vrf *vrf);
+
+/*-
+ * Change address state, can be used if
+ * O/S supports telling transports about
+ * changes to IFA/IFN's (link layer triggers).
+ * If a ifn goes down, we will do src-addr-selection
+ * and NOT use that, as a source address. This does
+ * not stop the routing system from routing out
+ * that interface, but we won't put it as a source.
+ */
+void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index);
+void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index);
+
+struct sctp_ifa *
+sctp_add_addr_to_vrf(uint32_t vrfid,
+ void *ifn, uint32_t ifn_index, uint32_t ifn_type,
+ const char *if_name,
+ void *ifa, struct sockaddr *addr, uint32_t ifa_flags,
+ int dynamic_add);
+
+void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu);
+
+void sctp_free_ifn(struct sctp_ifn *sctp_ifnp);
+void sctp_free_ifa(struct sctp_ifa *sctp_ifap);
+
+
+void sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr,
+ uint32_t ifn_index, const char *if_name);
+
+
+
+struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *);
+
+struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t);
+
+#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
+int sctp_inpcb_bind(struct socket *, struct sockaddr *,
+ struct sctp_ifa *,struct thread *);
+#elif defined(__Windows__)
+int sctp_inpcb_bind(struct socket *, struct sockaddr *,
+ struct sctp_ifa *,PKTHREAD);
+#else
+/* struct proc is a dummy for __Userspace__ */
+int sctp_inpcb_bind(struct socket *, struct sockaddr *,
+ struct sctp_ifa *, struct proc *);
+#endif
+
+struct sctp_tcb *
+sctp_findassociation_addr(struct mbuf *, int,
+ struct sockaddr *, struct sockaddr *,
+ struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **,
+ struct sctp_nets **, uint32_t vrf_id);
+
+struct sctp_tcb *
+sctp_findassociation_addr_sa(struct sockaddr *,
+ struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t);
+
+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_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock);
+
+struct sctp_tcb *
+sctp_findassociation_ep_asocid(struct sctp_inpcb *,
+ sctp_assoc_t, int);
+
+struct sctp_tcb *
+sctp_findassociation_ep_asconf(struct mbuf *, int, struct sockaddr *,
+ struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id);
+
+int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id);
+
+int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id);
+
+void sctp_inpcb_free(struct sctp_inpcb *, int, int);
+
+#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
+struct sctp_tcb *
+sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
+ int *, uint32_t, uint32_t, uint16_t, uint16_t, struct thread *);
+#elif defined(__Windows__)
+struct sctp_tcb *
+sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
+ int *, uint32_t, uint32_t, uint16_t, uint16_t, PKTHREAD);
+#else
+/* proc will be NULL for __Userspace__ */
+struct sctp_tcb *
+sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
+ int *, uint32_t, uint32_t, uint16_t, uint16_t, struct proc *);
+#endif
+
+int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int);
+
+
+void sctp_delete_from_timewait(uint32_t, uint16_t, uint16_t);
+
+int sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport);
+
+void
+sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport);
+
+void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t);
+
+void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *);
+
+int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets **, uint16_t, 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);
+
+void sctp_pcb_finish(void);
+
+void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
+void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
+
+int
+sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int,
+ struct sockaddr *, struct sockaddr *, struct sockaddr *, uint16_t);
+
+int
+sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *,
+ struct sctp_nets *);
+
+int sctp_is_vtag_good(uint32_t, uint16_t lport, uint16_t rport, struct timeval *);
+
+/* void sctp_drain(void); */
+
+int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *);
+
+int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp);
+
+void sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh);
+
+/*-
+ * 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,
+ inp_func inpe,
+ uint32_t, uint32_t,
+ uint32_t, void *,
+ uint32_t,
+ end_func ef,
+ struct sctp_inpcb *,
+ uint8_t co_off);
+#if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
+void
+sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use);
+
+#endif
+
+#endif /* _KERNEL */
+#endif /* !__sctp_pcb_h__ */