/* * Copyright (c) 2012-2013 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef _NETINET_MPTCP_VAR_H_ #define _NETINET_MPTCP_VAR_H_ #ifdef PRIVATE #include #include #endif #ifdef BSD_KERNEL_PRIVATE #include #include #include #include #include /* * MPTCP Session * * This is an extension to the multipath PCB specific for MPTCP, protected by * the per-PCB mpp_lock (also the socket's lock); MPTCP thread signalling uses * its own mpte_thread_lock due to lock ordering constraints. */ struct mptses { struct mppcb *mpte_mppcb; /* back ptr to multipath PCB */ struct mptcb *mpte_mptcb; /* ptr to MPTCP PCB */ TAILQ_HEAD(, mptopt) mpte_sopts; /* list of socket options */ TAILQ_HEAD(, mptsub) mpte_subflows; /* list of subflows */ uint16_t mpte_numflows; /* # of subflows in list */ uint16_t mpte_nummpcapflows; /* # of MP_CAP subflows */ associd_t mpte_associd; /* MPTCP association ID */ connid_t mpte_connid_last; /* last used connection ID */ /* * Threading (protected by mpte_thread_lock) */ decl_lck_mtx_data(, mpte_thread_lock); /* thread lock */ struct thread *mpte_thread; /* worker thread */ uint32_t mpte_thread_active; /* thread is running */ uint32_t mpte_thread_reqs; /* # of requests for thread */ struct mptsub *mpte_active_sub; /* ptr to last active subf */ u_int8_t mpte_flags; /* per mptcp session flags */ u_int8_t mpte_lost_aid; /* storing lost address id */ }; /* * Valid values for mpte_flags. */ #define MPTE_SND_REM_ADDR 0x01 /* Send Remove_addr option */ #define mptompte(mp) ((struct mptses *)(mp)->mpp_pcbe) #define MPTE_LOCK_ASSERT_HELD(_mpte) \ lck_mtx_assert(&(_mpte)->mpte_mppcb->mpp_lock, LCK_MTX_ASSERT_OWNED) #define MPTE_LOCK_ASSERT_NOTHELD(_mpte) \ lck_mtx_assert(&(_mpte)->mpte_mppcb->mpp_lock, LCK_MTX_ASSERT_NOTOWNED) #define MPTE_LOCK(_mpte) \ lck_mtx_lock(&(_mpte)->mpte_mppcb->mpp_lock) #define MPTE_LOCK_SPIN(_mpte) \ lck_mtx_lock_spin(&(_mpte)->mpte_mppcb->mpp_lock) #define MPTE_CONVERT_LOCK(_mpte) do { \ MPTE_LOCK_ASSERT_HELD(_mpte); \ lck_mtx_convert_spin(&(_mpte)->mpte_mppcb->mpp_lock); \ } while (0) #define MPTE_UNLOCK(_mpte) \ lck_mtx_unlock(&(_mpte)->mpte_mppcb->mpp_lock) /* * MPTCP socket options */ struct mptopt { TAILQ_ENTRY(mptopt) mpo_entry; /* glue to other options */ uint32_t mpo_flags; /* see flags below */ int mpo_level; /* sopt_level */ int mpo_name; /* sopt_name */ int mpo_intval; /* sopt_val */ }; #define MPOF_ATTACHED 0x1 /* attached to MP socket */ #define MPOF_SUBFLOW_OK 0x2 /* can be issued on subflow socket */ #define MPOF_INTERIM 0x4 /* has not been issued on any subflow */ /* * Structure passed down to TCP during subflow connection establishment * containing information pertaining to the MPTCP. */ struct mptsub_connreq { uint32_t mpcr_type; /* see MPTSUB_CONNREQ_* below */ uint32_t mpcr_ifscope; /* ifscope parameter to connectx(2) */ struct proc *mpcr_proc; /* process issuing connectx(2) */ }; /* valid values for mpcr_type */ #define MPTSUB_CONNREQ_MP_ENABLE 1 /* enable MPTCP */ #define MPTSUB_CONNREQ_MP_ADD 2 /* join an existing MPTCP */ /* * MPTCP subflow * * Protected by the the per-subflow mpts_lock. Note that mpts_flags * and mpts_evctl are modified via atomic operations. */ struct mptsub { decl_lck_mtx_data(, mpts_lock); /* per-subflow lock */ TAILQ_ENTRY(mptsub) mpts_entry; /* glue to peer subflows */ uint32_t mpts_refcnt; /* reference count */ uint32_t mpts_flags; /* see flags below */ uint32_t mpts_evctl; /* subflow control events */ uint32_t mpts_family; /* address family */ connid_t mpts_connid; /* subflow connection ID */ int mpts_oldintval; /* sopt_val before sosetopt */ uint32_t mpts_rank; /* subflow priority/rank */ int32_t mpts_soerror; /* most recent subflow error */ struct mptses *mpts_mpte; /* back ptr to MPTCP session */ struct socket *mpts_socket; /* subflow socket */ struct sockaddr_list *mpts_src_sl; /* source list */ struct sockaddr_list *mpts_dst_sl; /* destination list */ struct ifnet *mpts_outif; /* outbound interface */ u_int64_t mpts_sndnxt; /* next byte to send in mp so */ u_int32_t mpts_rel_seq; /* running count of subflow # */ struct { u_int64_t mptsl_dsn; /* Data Sequence Number */ u_int32_t mptsl_sseq; /* Corresponding Data Seq */ u_int32_t mptsl_len; /* length of mapping */ } mpts_lastmap; struct protosw *mpts_oprotosw; /* original protosw */ struct mptsub_connreq mpts_mpcr; /* connection request */ }; /* * Valid values for mpts_flags. In particular: * * - MP_CAPABLE means that the connection is successfully established as * MPTCP and data transfer may occur, but is not yet ready for multipath- * related semantics until MP_READY. I.e. if this is on the first subflow, * it causes the MPTCP socket to transition to a connected state, except * that additional subflows will not be established; they will be marked * with PENDING and will be processed when the first subflow is marked * with MP_READY. * * - MP_READY implies that an MP_CAPABLE connection has been confirmed as * an MPTCP connection. See notes above. * * - MP_DEGRADED implies that the connection has lost its MPTCP capabilities * but data transfer on the MPTCP socket is unaffected. Any existing * PENDING subflows will be disconnected, and further attempts to connect * additional subflows will be rejected. * * Note that these are per-subflow flags. The setting and clearing of MP_READY * reflects the state of the MPTCP connection with regards to its multipath * semantics, via the MPTCPF_JOIN_READY flag. Until that flag is set (meaning * until at least a subflow is marked with MP_READY), further connectx(2) * attempts to join will be queued. When the flag is cleared (after it has * been set), further connectx(2) will fail (and existing queued ones will be * aborted) and the MPTCP connection loses all of its multipath semantics. * * Keep in sync with bsd/dev/dtrace/scripts/mptcp.d. */ #define MPTSF_ATTACHED 0x1 /* attached to MPTCP PCB */ #define MPTSF_CONNECTING 0x2 /* connection was attempted */ #define MPTSF_CONNECT_PENDING 0x4 /* will connect when MPTCP is ready */ #define MPTSF_CONNECTED 0x8 /* connection is established */ #define MPTSF_DISCONNECTING 0x10 /* disconnection was attempted */ #define MPTSF_DISCONNECTED 0x20 /* has been disconnected */ #define MPTSF_MP_CAPABLE 0x40 /* connected as a MPTCP subflow */ #define MPTSF_MP_READY 0x80 /* MPTCP has been confirmed */ #define MPTSF_MP_DEGRADED 0x100 /* has lost its MPTCP capabilities */ #define MPTSF_SUSPENDED 0x200 /* write-side is flow controlled */ #define MPTSF_BOUND_IF 0x400 /* subflow bound to an interface */ #define MPTSF_BOUND_IP 0x800 /* subflow bound to a src address */ #define MPTSF_BOUND_PORT 0x1000 /* subflow bound to a src port */ #define MPTSF_PREFERRED 0x2000 /* primary/preferred subflow */ #define MPTSF_SOPT_OLDVAL 0x4000 /* old option value is valid */ #define MPTSF_SOPT_INPROG 0x8000 /* sosetopt in progress */ #define MPTSF_DELETEOK 0x10000 /* subflow can be deleted */ #define MPTSF_FAILINGOVER 0x20000 /* subflow not used for output */ #define MPTSF_ACTIVE 0x40000 /* subflow currently in use */ #define MPTSF_MPCAP_CTRSET 0x80000 /* mpcap counter */ #define MPTSF_BITS \ "\020\1ATTACHED\2CONNECTING\3PENDING\4CONNECTED\5DISCONNECTING" \ "\6DISCONNECTED\7MP_CAPABLE\10MP_READY\11MP_DEGRADED\12SUSPENDED" \ "\13BOUND_IF\14BOUND_IP\15BOUND_PORT\16PREFERRED\17SOPT_OLDVAL" \ "\20SOPT_INPROG\21NOLINGER\22FAILINGOVER\23ACTIVE\24MPCAP_CTRSET" #define MPTS_LOCK_ASSERT_HELD(_mpts) \ lck_mtx_assert(&(_mpts)->mpts_lock, LCK_MTX_ASSERT_OWNED) #define MPTS_LOCK_ASSERT_NOTHELD(_mpts) \ lck_mtx_assert(&(_mpts)->mpts_lock, LCK_MTX_ASSERT_NOTOWNED) #define MPTS_LOCK(_mpts) \ lck_mtx_lock(&(_mpts)->mpts_lock) #define MPTS_LOCK_SPIN(_mpts) \ lck_mtx_lock_spin(&(_mpts)->mpts_lock) #define MPTS_CONVERT_LOCK(_mpts) do { \ MPTS_LOCK_ASSERT_HELD(_mpts); \ lck_mtx_convert_spin(&(_mpts)->mpts_lock); \ } while (0) #define MPTS_UNLOCK(_mpts) \ lck_mtx_unlock(&(_mpts)->mpts_lock) #define MPTS_ADDREF(_mpts) \ mptcp_subflow_addref(_mpts, 0) #define MPTS_ADDREF_LOCKED(_mpts) \ mptcp_subflow_addref(_mpts, 1) #define MPTS_REMREF(_mpts) \ mptcp_subflow_remref(_mpts) /* * MPTCP states * Keep in sync with bsd/dev/dtrace/mptcp.d */ typedef enum mptcp_state { MPTCPS_CLOSED = 0, /* closed */ MPTCPS_LISTEN = 1, /* not yet implemented */ MPTCPS_ESTABLISHED = 2, /* MPTCP connection established */ MPTCPS_CLOSE_WAIT = 3, /* rcvd DFIN, waiting for close */ MPTCPS_FIN_WAIT_1 = 4, /* have closed, sent DFIN */ MPTCPS_CLOSING = 5, /* closed xchd DFIN, waiting DFIN ACK */ MPTCPS_LAST_ACK = 6, /* had DFIN and close; await DFIN ACK */ MPTCPS_FIN_WAIT_2 = 7, /* have closed, DFIN is acked */ MPTCPS_TIME_WAIT = 8, /* in 2*MSL quiet wait after close */ MPTCPS_FASTCLOSE_WAIT = 9, /* sent MP_FASTCLOSE */ } mptcp_state_t; typedef u_int64_t mptcp_key_t; typedef u_int32_t mptcp_token_t; typedef u_int8_t mptcp_addr_id; /* Address ID list */ struct mptcp_subf_auth_entry { LIST_ENTRY(mptcp_subf_auth_entry) msae_next; u_int32_t msae_laddr_rand; /* Local nonce */ u_int32_t msae_raddr_rand; /* Remote nonce */ mptcp_addr_id msae_laddr_id; /* Local addr ID */ mptcp_addr_id msae_raddr_id; /* Remote addr ID */ }; /* * MPTCP Protocol Control Block * * Protected by per-MPTCP mpt_lock. * Keep in sync with bsd/dev/dtrace/scripts/mptcp.d. */ struct mptcb { decl_lck_mtx_data(, mpt_lock); /* per MPTCP PCB lock */ struct mptses *mpt_mpte; /* back ptr to MPTCP session */ mptcp_state_t mpt_state; /* MPTCP state */ u_int32_t mpt_flags; /* see flags below */ u_int32_t mpt_refcnt; /* references held on mptcb */ u_int32_t mpt_version; /* MPTCP proto version */ int mpt_softerror; /* error not yet reported */ /* * Authentication and metadata invariants */ mptcp_key_t *mpt_localkey; /* in network byte order */ mptcp_key_t mpt_remotekey; /* in network byte order */ mptcp_token_t mpt_localtoken; /* HMAC SHA1 of local key */ mptcp_token_t mpt_remotetoken; /* HMAC SHA1 of remote key */ /* * Timer vars for scenarios where subflow level acks arrive, but * Data ACKs do not. */ int mpt_rxtshift; /* num of consecutive retrans */ u_int32_t mpt_rxtstart; /* time at which rxt started */ u_int64_t mpt_rtseq; /* seq # being tracked */ u_int32_t mpt_timer_vals; /* timer related values */ u_int32_t mpt_timewait; /* timewait */ /* * Sending side */ u_int64_t mpt_snduna; /* DSN of last unacked byte */ u_int64_t mpt_sndnxt; /* DSN of next byte to send */ u_int64_t mpt_sndmax; /* DSN of max byte sent */ u_int64_t mpt_local_idsn; /* First byte's DSN */ u_int32_t mpt_sndwnd; /* * Receiving side */ u_int64_t mpt_rcvnxt; /* Next expected DSN */ u_int64_t mpt_rcvatmark; /* mpsocket marker of rcvnxt */ u_int64_t mpt_remote_idsn; /* Peer's IDSN */ u_int32_t mpt_rcvwnd; LIST_HEAD(, mptcp_subf_auth_entry) mpt_subauth_list; /* address IDs */ /* * Fastclose */ u_int64_t mpt_dsn_at_csum_fail; /* MPFail Opt DSN */ /* * Zombie handling */ #define MPT_GC_TICKS (60) int32_t mpt_gc_ticks; /* Used for zombie deletion */ }; /* valid values for mpt_flags (see also notes on mpts_flags above) */ #define MPTCPF_CHECKSUM 0x1 /* checksum DSS option */ #define MPTCPF_FALLBACK_TO_TCP 0x2 /* Fallback to TCP */ #define MPTCPF_JOIN_READY 0x4 /* Ready to start 2 or more subflows */ #define MPTCPF_RECVD_MPFAIL 0x8 /* Received MP_FAIL option */ #define MPTCPF_PEEL_OFF 0x10 /* Peel off this socket */ #define MPTCPF_SND_64BITDSN 0x20 /* Send full 64-bit DSN */ #define MPTCPF_SND_64BITACK 0x40 /* Send 64-bit ACK response */ #define MPTCPF_RCVD_64BITACK 0x80 /* Received 64-bit Data ACK */ #define MPTCPF_BITS \ "\020\1CHECKSUM\2FALLBACK_TO_TCP\3JOIN_READY\4RECVD_MPFAIL\5PEEL_OFF" \ "\6SND_64BITDSN\7SND_64BITACK\10RCVD_64BITACK" /* valid values for mpt_timer_vals */ #define MPTT_REXMT 0x01 /* Starting Retransmit Timer */ #define MPTT_TW 0x02 /* Starting Timewait Timer */ #define MPTT_FASTCLOSE 0x04 /* Starting Fastclose wait timer */ #define MPT_LOCK_ASSERT_HELD(_mpt) \ lck_mtx_assert(&(_mpt)->mpt_lock, LCK_MTX_ASSERT_OWNED) #define MPT_LOCK_ASSERT_NOTHELD(_mpt) \ lck_mtx_assert(&(_mpt)->mpt_lock, LCK_MTX_ASSERT_NOTOWNED) #define MPT_LOCK(_mpt) \ lck_mtx_lock(&(_mpt)->mpt_lock) #define MPT_LOCK_SPIN(_mpt) \ lck_mtx_lock_spin(&(_mpt)->mpt_lock) #define MPT_CONVERT_LOCK(_mpt) do { \ MPT_LOCK_ASSERT_HELD(_mpt); \ lck_mtx_convert_spin(&(_mpt)->mpt_lock); \ } while (0) #define MPT_UNLOCK(_mpt) \ lck_mtx_unlock(&(_mpt)->mpt_lock) /* events for close FSM */ #define MPCE_CLOSE 0x1 #define MPCE_RECV_DATA_ACK 0x2 #define MPCE_RECV_DATA_FIN 0x4 /* mptcb manipulation */ #define tptomptp(tp) ((struct mptcb *)((tp)->t_mptcb)) /* * MPTCP control block and state structures are allocated along with * the MP protocol control block; the folllowing represents the layout. */ struct mpp_mtp { struct mppcb mpp; /* Multipath PCB */ struct mptses mpp_ses; /* MPTCP session */ struct mptcb mtcb; /* MPTCP PCB */ }; #ifdef SYSCTL_DECL SYSCTL_DECL(_net_inet_mptcp); #endif /* SYSCTL_DECL */ extern struct mppcbinfo mtcbinfo; extern struct pr_usrreqs mptcp_usrreqs; /* Encryption algorithm related definitions */ #define MPTCP_SHA1_RESULTLEN 20 #define SHA1_TRUNCATED 8 /* List of valid keys to use for MPTCP connections */ #define MPTCP_KEY_DIGEST_LEN (MPTCP_SHA1_RESULTLEN) #define MPTCP_MX_KEY_ALLOCS (256) #define MPTCP_KEY_PREALLOCS_MX (16) #define MPTCP_MX_PREALLOC_ZONE_SZ (8192) struct mptcp_key_entry { LIST_ENTRY(mptcp_key_entry) mkey_next; mptcp_key_t mkey_value; #define MKEYF_FREE 0x0 #define MKEYF_INUSE 0x1 u_int32_t mkey_flags; char mkey_digest[MPTCP_KEY_DIGEST_LEN]; }; /* structure for managing unique key list */ struct mptcp_keys_pool_head { struct mptcp_key_entry *lh_first; /* list of keys */ u_int32_t mkph_count; /* total keys in pool */ vm_size_t mkph_key_elm_sz; /* size of key entry */ struct zone *mkph_key_entry_zone; /* zone for key entry */ decl_lck_mtx_data(, mkph_lock); /* lock for key list */ }; /* MPTCP Receive Window */ #define MPTCP_RWIN_MAX (1<<16) /* MPTCP Debugging Levels */ #define MP_NODEBUG 0x0 #define MP_ERR_DEBUG 0x1 #define MP_VERBOSE_DEBUG_1 0x2 #define MP_VERBOSE_DEBUG_2 0x3 #define MP_VERBOSE_DEBUG_3 0x4 #define MP_VERBOSE_DEBUG_4 0x5 /* output path debugging */ /* Mask to obtain 32-bit portion of data sequence number */ #define MPTCP_DATASEQ_LOW32_MASK (0xffffffff) #define MPTCP_DATASEQ_LOW32(seq) (seq & MPTCP_DATASEQ_LOW32_MASK) /* Mask to obtain upper 32-bit portion of data sequence number */ #define MPTCP_DATASEQ_HIGH32_MASK (0xffffffff00000000) #define MPTCP_DATASEQ_HIGH32(seq) (seq & MPTCP_DATASEQ_HIGH32_MASK) /* Mask to obtain 32-bit portion of data ack */ #define MPTCP_DATAACK_LOW32_MASK (0xffffffff) #define MPTCP_DATAACK_LOW32(ack) (ack & MPTCP_DATAACK_LOW32_MASK) /* Mask to obtain upper 32-bit portion of data ack */ #define MPTCP_DATAACK_HIGH32_MASK (0xffffffff00000000) #define MPTCP_DATAACK_HIGH32(ack) (ack & MPTCP_DATAACK_HIGH32_MASK) /* * x is the 64-bit data sequence number, y the 32-bit data seq number to be * extended. z is y extended to the appropriate 64-bit value. * This algorithm is based on the fact that subflow level window sizes are * at the maximum 2**30 (in reality, they are a lot lesser). A high throughput * application sending on a large number of subflows can in theory have very * large MPTCP level send and receive windows. In which case, 64 bit DSNs * must be sent in place of 32 bit DSNs on wire. For us, with 2 subflows at * 512K each, sequence wraparound detection can be done by checking whether * the 32-bit value obtained on wire is 2**31 bytes apart from the stored * lower 32-bits of the Data Sequence Number. Bogus DSNs are dropped by * comparing against rwnd. Bogus DSNs within rwnd cannot be protected against * and are as weak as bogus TCP sequence numbers. */ #define MPTCP_EXTEND_DSN(x, y, z) { \ if ((MPTCP_DATASEQ_LOW32(x) > y) && \ ((((u_int32_t)MPTCP_DATASEQ_LOW32(x)) - (u_int32_t)y) >= \ (u_int32_t)(1 << 31))) { \ /* \ * y wrapped around and x and y are 2**31 bytes apart \ */ \ z = MPTCP_DATASEQ_HIGH32(x) + 0x100000000; \ z |= y; \ } else if ((MPTCP_DATASEQ_LOW32(x) < y) && \ (((u_int32_t)y - \ ((u_int32_t)MPTCP_DATASEQ_LOW32(x))) >= \ (u_int32_t)(1 << 31))) { \ /* \ * x wrapped around and x and y are 2**31 apart \ */ \ z = MPTCP_DATASEQ_HIGH32(x) - 0x100000000; \ z |= y; \ } else { \ z = MPTCP_DATASEQ_HIGH32(x) | y; \ } \ } #define mptcplog(x) do { if (mptcp_verbose >= 1) log x; } while (0) #define mptcplog2(x) do { if (mptcp_verbose >= 2) log x; } while (0) #define mptcplog3(x) do { if (mptcp_verbose >= 3) log x; } while (0) extern int mptcp_enable; /* Multipath TCP */ extern int mptcp_dbg; /* Multipath TCP DBG */ extern int mptcp_mpcap_retries; /* Multipath TCP retries */ extern int mptcp_join_retries; /* Multipath TCP Join retries */ extern int mptcp_dss_csum; /* Multipath DSS Option checksum */ extern int mptcp_fail_thresh; /* Multipath failover thresh of retransmits */ extern int mptcp_subflow_keeptime; /* Multipath subflow TCP_KEEPALIVE opt */ extern int mptcp_mpprio_enable; /* MP_PRIO option enable/disable */ extern int mptcp_remaddr_enable;/* REMOVE_ADDR option enable/disable */ extern uint32_t mptcp_verbose; /* verbose and mptcp_dbg must be unified */ #define MPPCB_LIMIT 16 extern uint32_t mptcp_socket_limit; /* max number of mptcp sockets allowed */ extern int tcp_jack_rxmt; /* Join ACK retransmission value in msecs */ __BEGIN_DECLS extern void mptcp_init(struct protosw *, struct domain *); extern int mptcp_ctloutput(struct socket *, struct sockopt *); extern struct mptses *mptcp_sescreate(struct socket *, struct mppcb *); extern void mptcp_drain(void); extern struct mptses *mptcp_drop(struct mptses *, struct mptcb *, int); extern struct mptses *mptcp_close(struct mptses *, struct mptcb *); extern int mptcp_lock(struct socket *, int, void *); extern int mptcp_unlock(struct socket *, int, void *); extern lck_mtx_t *mptcp_getlock(struct socket *, int); extern void mptcp_thread_signal(struct mptses *); extern void mptcp_flush_sopts(struct mptses *); extern int mptcp_setconnorder(struct mptses *, connid_t, uint32_t); extern int mptcp_getconnorder(struct mptses *, connid_t, uint32_t *); extern struct mptopt *mptcp_sopt_alloc(int); extern const char *mptcp_sopt2str(int, int, char *, int); extern void mptcp_sopt_free(struct mptopt *); extern void mptcp_sopt_insert(struct mptses *, struct mptopt *); extern void mptcp_sopt_remove(struct mptses *, struct mptopt *); extern struct mptopt *mptcp_sopt_find(struct mptses *, struct sockopt *); extern struct mptsub *mptcp_subflow_alloc(int); extern void mptcp_subflow_free(struct mptsub *); extern void mptcp_subflow_addref(struct mptsub *, int); extern int mptcp_subflow_add(struct mptses *, struct mptsub *, struct proc *, uint32_t); extern void mptcp_subflow_del(struct mptses *, struct mptsub *, boolean_t); extern void mptcp_subflow_remref(struct mptsub *); extern int mptcp_subflow_output(struct mptses *, struct mptsub *); extern void mptcp_subflow_disconnect(struct mptses *, struct mptsub *, boolean_t); extern void mptcp_subflow_sopeeloff(struct mptses *, struct mptsub *, struct socket *); extern int mptcp_subflow_sosetopt(struct mptses *, struct socket *, struct mptopt *); extern int mptcp_subflow_sogetopt(struct mptses *, struct socket *, struct mptopt *); extern void mptcp_input(struct mptses *, struct mbuf *); extern int mptcp_output(struct mptses *); extern void mptcp_close_fsm(struct mptcb *, uint32_t); extern mptcp_token_t mptcp_get_localtoken(void *); extern mptcp_token_t mptcp_get_remotetoken(void *); extern u_int64_t mptcp_get_localkey(void *); extern u_int64_t mptcp_get_remotekey(void *); extern void mptcp_free_key(mptcp_key_t *key); extern void mptcp_hmac_sha1(mptcp_key_t, mptcp_key_t, u_int32_t, u_int32_t, u_char*, int); extern void mptcp_get_hmac(mptcp_addr_id, struct mptcb *, u_char *, int); extern void mptcp_get_rands(mptcp_addr_id, struct mptcb *, u_int32_t *, u_int32_t *); extern void mptcp_set_raddr_rand(mptcp_addr_id, struct mptcb *, mptcp_addr_id, u_int32_t); extern u_int64_t mptcp_get_trunced_hmac(mptcp_addr_id, struct mptcb *mp_tp); extern int mptcp_generate_token(char *, int, caddr_t, int); extern int mptcp_generate_idsn(char *, int, caddr_t, int); extern boolean_t mptcp_ok_to_keepalive(struct mptcb *); extern void mptcp_insert_dsn(struct mppcb *, struct mbuf *); extern void mptcp_output_getm_dsnmap32(struct socket *, int, uint32_t, u_int32_t *, u_int32_t *, u_int16_t *, u_int64_t *); extern void mptcp_output_getm_dsnmap64(struct socket *, int, uint32_t, u_int64_t *, u_int32_t *, u_int16_t *); extern void mptcp_send_dfin(struct socket *); extern void mptcp_act_on_txfail(struct socket *); extern struct mptsub *mptcp_get_subflow(struct mptses *, struct mptsub *); extern int mptcp_get_map_for_dsn(struct socket *, u_int64_t, u_int32_t *); extern int32_t mptcp_adj_sendlen(struct socket *so, int32_t off, int32_t len); extern int32_t mptcp_sbspace(struct mptcb *); extern void mptcp_notify_mpready(struct socket *); extern void mptcp_notify_mpfail(struct socket *); extern void mptcp_notify_close(struct socket *); __END_DECLS #endif /* BSD_KERNEL_PRIVATE */ #ifdef PRIVATE typedef struct mptcp_flow { uint32_t flow_flags; connid_t flow_cid; struct sockaddr_storage flow_src; struct sockaddr_storage flow_dst; conninfo_tcp_t flow_ci; } mptcp_flow_t; typedef struct conninfo_mptcp { size_t mptcpci_len; size_t mptcpci_nflows; uint32_t mptcpci_state; mptcp_flow_t mptcpci_flows[1]; } conninfo_mptcp_t; #endif /* PRIVATE */ #endif /* _NETINET_MPTCP_VAR_H_ */