/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2011, Joyent, Inc. All rights reserved. * Copyright (c) 2011 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2014, 2017 by Delphix. All rights reserved. * Copyright 2020 OmniOS Community Edition (OmniOSce) Association. * Copyright 2024 Oxide Computer Company */ /* Copyright (c) 1990 Mentat Inc. */ #ifndef _INET_TCP_H #define _INET_TCP_H #ifdef __cplusplus extern "C" { #endif #include <sys/inttypes.h> #include <netinet/ip6.h> #include <netinet/tcp.h> #include <sys/socket.h> #include <sys/socket_proto.h> #include <sys/md5.h> #include <inet/common.h> #include <inet/ip.h> #include <inet/ip6.h> #include <inet/mi.h> #include <inet/mib2.h> #include <inet/tcp_stack.h> #include <inet/tcp_sack.h> #include <inet/cc.h> /* TCP states */ #define TCPS_CLOSED -6 #define TCPS_IDLE -5 /* idle (opened, but not bound) */ #define TCPS_BOUND -4 /* bound, ready to connect or accept */ #define TCPS_LISTEN -3 /* listening for connection */ #define TCPS_SYN_SENT -2 /* active, have sent syn */ #define TCPS_SYN_RCVD -1 /* have received syn (and sent ours) */ /* states < TCPS_ESTABLISHED are those where connections not established */ #define TCPS_ESTABLISHED 0 /* established */ #define TCPS_CLOSE_WAIT 1 /* rcvd fin, waiting for close */ /* states > TCPS_CLOSE_WAIT are those where user has closed */ #define TCPS_FIN_WAIT_1 2 /* have closed and sent fin */ #define TCPS_CLOSING 3 /* closed, xchd FIN, await FIN ACK */ #define TCPS_LAST_ACK 4 /* had fin and close; await FIN ACK */ /* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */ #define TCPS_FIN_WAIT_2 5 /* have closed, fin is acked */ #define TCPS_TIME_WAIT 6 /* in 2*msl quiet wait after close */ /* * Internal flags used in conjunction with the packet header flags. * Used in tcp_input_data to keep track of what needs to be done. */ #define TH_LIMIT_XMIT 0x0400 /* Limited xmit is needed */ #define TH_XMIT_NEEDED 0x0800 /* Window opened - send queued data */ #define TH_REXMIT_NEEDED 0x1000 /* Time expired for unacked data */ #define TH_ACK_NEEDED 0x2000 /* Send an ack now. */ #define TH_NEED_SACK_REXMIT 0x4000 /* Use SACK info to retransmission */ #define TH_ACK_TIMER_NEEDED 0x8000 /* Start the delayed ACK timer */ #define TH_ORDREL_NEEDED 0x10000 /* Generate an ordrel indication */ #define TH_MARKNEXT_NEEDED 0x20000 /* Data should have MSGMARKNEXT */ #define TH_SEND_URP_MARK 0x40000 /* Send up tcp_urp_mark_mp */ /* * TCP sequence numbers are 32 bit integers operated * on with modular arithmetic. These macros can be * used to compare such integers. */ #define SEQ_LT(a, b) ((int32_t)((a)-(b)) < 0) #define SEQ_LEQ(a, b) ((int32_t)((a)-(b)) <= 0) #define SEQ_GT(a, b) ((int32_t)((a)-(b)) > 0) #define SEQ_GEQ(a, b) ((int32_t)((a)-(b)) >= 0) /* TCP Protocol header */ typedef struct tcphdr_s { uint8_t th_lport[2]; /* Source port */ uint8_t th_fport[2]; /* Destination port */ uint8_t th_seq[4]; /* Sequence number */ uint8_t th_ack[4]; /* Acknowledgement number */ uint8_t th_offset_and_rsrvd[1]; /* Offset to the packet data */ uint8_t th_flags[1]; uint8_t th_win[2]; /* Allocation number */ uint8_t th_sum[2]; /* TCP checksum */ uint8_t th_urp[2]; /* Urgent pointer */ } tcph_t; #define TCP_HDR_LENGTH(tcph) \ ((((tcph_t *)tcph)->th_offset_and_rsrvd[0] >>2) &(0xF << 2)) #define TCP_MAX_COMBINED_HEADER_LENGTH (60 + 60) /* Maxed out ip + tcp */ #define TCP_MAX_IP_OPTIONS_LENGTH (60 - IP_SIMPLE_HDR_LENGTH) #define TCP_MAX_HDR_LENGTH 60 #define TCP_MAX_TCP_OPTIONS_LENGTH (60 - sizeof (tcpha_t)) #define TCP_MIN_HEADER_LENGTH 20 #define TCP_MAXWIN 65535 #define TCP_PORT_LEN sizeof (in_port_t) #define TCP_MAX_WINSHIFT 14 #define TCP_MAX_LARGEWIN (TCP_MAXWIN << TCP_MAX_WINSHIFT) #define TCP_MAX_LSO_LENGTH (IP_MAXPACKET - TCP_MAX_COMBINED_HEADER_LENGTH) #define TCPIP_HDR_LENGTH(mp, n) \ (n) = IPH_HDR_LENGTH((mp)->b_rptr), \ (n) += TCP_HDR_LENGTH((tcpha_t *)&(mp)->b_rptr[(n)]) /* TCP Protocol header (used if the header is known to be 32-bit aligned) */ typedef struct tcphdra_s { in_port_t tha_lport; /* Source port */ in_port_t tha_fport; /* Destination port */ uint32_t tha_seq; /* Sequence number */ uint32_t tha_ack; /* Acknowledgement number */ uint8_t tha_offset_and_reserved; /* Offset to the packet data */ uint8_t tha_flags; uint16_t tha_win; /* Allocation number */ uint16_t tha_sum; /* TCP checksum */ uint16_t tha_urp; /* Urgent pointer */ } tcpha_t; struct conn_s; struct tcp_listen_cnt_s; /* * Control structure for each open TCP stream, * defined only within the kernel or for a kmem user. * NOTE: tcp_reinit_values MUST have a line for each field in this structure! */ #if (defined(_KERNEL) || defined(_KMEMUSER)) typedef struct tcp_s { struct tcp_s *tcp_time_wait_next; /* Pointer to next T/W block */ struct tcp_s *tcp_time_wait_prev; /* Pointer to previous T/W next */ int64_t tcp_time_wait_expire; struct conn_s *tcp_connp; /* back pointer to conn_t */ tcp_stack_t *tcp_tcps; /* back pointer to tcp_stack_t */ struct cc_algo *tcp_cc_algo; /* congestion control algorithm */ struct cc_var tcp_ccv; /* congestion control specific vars */ int32_t tcp_state; int32_t tcp_rcv_ws; /* My window scale power */ int32_t tcp_snd_ws; /* Sender's window scale power */ uint32_t tcp_ts_recent; /* Timestamp of earliest unacked */ /* data segment */ clock_t tcp_rto; /* Round trip timeout */ int64_t tcp_last_rcv_lbolt; /* lbolt on last packet, used for PAWS */ uint32_t tcp_rto_initial; /* Initial RTO */ uint32_t tcp_rto_min; /* Minimum RTO */ uint32_t tcp_rto_max; /* Maximum RTO */ uint32_t tcp_snxt; /* Senders next seq num */ uint32_t tcp_swnd; /* Senders window (relative to suna) */ uint32_t tcp_mss; /* Max segment size */ uint32_t tcp_iss; /* Initial send seq num */ uint32_t tcp_rnxt; /* Seq we expect to recv next */ uint32_t tcp_rwnd; /* Fields arranged in approximate access order along main paths */ mblk_t *tcp_xmit_head; /* Head of xmit/rexmit list */ mblk_t *tcp_xmit_last; /* Last valid data seen by tcp_wput */ mblk_t *tcp_xmit_tail; /* Last data sent */ uint32_t tcp_unsent; /* # of bytes in hand that are unsent */ uint32_t tcp_xmit_tail_unsent; /* # of unsent bytes in xmit_tail */ uint32_t tcp_suna; /* Sender unacknowledged */ uint32_t tcp_rexmit_nxt; /* Next rexmit seq num */ uint32_t tcp_rexmit_max; /* Max retran seq num */ uint32_t tcp_cwnd; /* Congestion window */ int32_t tcp_cwnd_cnt; /* cwnd cnt in congestion avoidance */ uint32_t tcp_naglim; /* Tunable nagle limit */ uint32_t tcp_valid_bits; #define TCP_ISS_VALID 0x1 /* Is the tcp_iss seq num active? */ #define TCP_FSS_VALID 0x2 /* Is the tcp_fss seq num active? */ #define TCP_URG_VALID 0x4 /* Is the tcp_urg seq num active? */ #define TCP_OFO_FIN_VALID 0x8 /* Has TCP received an out of order FIN? */ timeout_id_t tcp_timer_tid; /* Control block for timer service */ uchar_t tcp_timer_backoff; /* Backoff shift count. */ int64_t tcp_last_recv_time; /* Last time we receive a segment. */ uint32_t tcp_init_cwnd; /* Initial cwnd (start/restart) */ /* Following manipulated by TCP under squeue protection */ uint32_t tcp_urp_last_valid : 1, /* Is tcp_urp_last valid? */ tcp_hard_binding : 1, /* TCP_DETACHED_NONEAGER */ tcp_fin_acked : 1, /* Has our FIN been acked? */ tcp_fin_rcvd : 1, /* Have we seen a FIN? */ tcp_fin_sent : 1, /* Have we sent our FIN yet? */ tcp_ordrel_done : 1, /* Have we sent the ord_rel upstream? */ tcp_detached : 1, /* If we're detached from a stream */ tcp_zero_win_probe: 1, /* Zero win probing is in progress */ tcp_loopback: 1, /* src and dst are the same machine */ tcp_localnet: 1, /* src and dst are on the same subnet */ tcp_syn_defense: 1, /* For defense against SYN attack */ #define tcp_dontdrop tcp_syn_defense tcp_set_timer : 1, tcp_active_open: 1, /* This is a active open */ tcp_rexmit : 1, /* TCP is retransmitting */ tcp_snd_sack_ok : 1, /* Can use SACK for this connection */ tcp_hwcksum : 1, /* The NIC is capable of hwcksum */ tcp_ip_forward_progress : 1, tcp_ecn_ok : 1, /* Can use ECN for this connection */ tcp_ecn_echo_on : 1, /* Need to do ECN echo */ tcp_ecn_cwr_sent : 1, /* ECN_CWR has been sent */ tcp_cwr : 1, /* Cwnd has reduced recently */ tcp_pad_to_bit31 : 11; /* Following manipulated by TCP under squeue protection */ uint32_t tcp_snd_ts_ok : 1, tcp_snd_ws_ok : 1, tcp_reserved_port : 1, tcp_in_free_list : 1, tcp_snd_zcopy_on : 1, /* xmit zero-copy enabled */ tcp_snd_zcopy_aware : 1, /* client is zero-copy aware */ tcp_xmit_zc_clean : 1, /* the xmit list is free of zc-mblk */ tcp_wait_for_eagers : 1, /* Wait for eagers to disappear */ tcp_accept_error : 1, /* Error during TLI accept */ tcp_send_discon_ind : 1, /* TLI accept err, send discon ind */ tcp_cork : 1, /* tcp_cork option */ tcp_quickack : 1, /* Send acks immediately */ tcp_tconnind_started : 1, /* conn_ind message is being sent */ tcp_lso :1, /* Lower layer is capable of LSO */ tcp_is_wnd_shrnk : 1, /* Window has shrunk */ tcp_md5sig : 1, /* Add MD5 signature option */ tcp_pad_to_bit_31 : 16; uint32_t tcp_initial_pmtu; /* Initial outgoing Path MTU. */ mblk_t *tcp_reass_head; /* Out of order reassembly list head */ mblk_t *tcp_reass_tail; /* Out of order reassembly list tail */ /* SACK related info */ tcp_sack_info_t tcp_sack_info; #define tcp_pipe tcp_sack_info.tcp_pipe #define tcp_fack tcp_sack_info.tcp_fack #define tcp_sack_snxt tcp_sack_info.tcp_sack_snxt #define tcp_max_sack_blk tcp_sack_info.tcp_max_sack_blk #define tcp_num_sack_blk tcp_sack_info.tcp_num_sack_blk #define tcp_sack_list tcp_sack_info.tcp_sack_list #define tcp_num_notsack_blk tcp_sack_info.tcp_num_notsack_blk #define tcp_cnt_notsack_list tcp_sack_info.tcp_cnt_notsack_list #define tcp_notsack_list tcp_sack_info.tcp_notsack_list mblk_t *tcp_rcv_list; /* Queued until push, urgent data, */ mblk_t *tcp_rcv_last_head; /* optdata, or the count exceeds */ mblk_t *tcp_rcv_last_tail; /* tcp_rcv_push_wait. */ uint32_t tcp_rcv_cnt; /* tcp_rcv_list is b_next chain. */ uint32_t tcp_cwnd_ssthresh; /* Congestion window */ uint32_t tcp_cwnd_max; uint32_t tcp_csuna; /* Clear (no rexmits in window) suna */ hrtime_t tcp_rtt_sum; /* Round trip sum */ uint32_t tcp_rtt_cnt; /* Round trip count (non_dup ACKs) */ hrtime_t tcp_rtt_sa; /* Round trip smoothed average */ hrtime_t tcp_rtt_sd; /* Round trip smoothed deviation */ uint32_t tcp_rtt_update; /* Round trip update(s) */ clock_t tcp_ms_we_have_waited; /* Total retrans time */ uint32_t tcp_swl1; /* These help us avoid using stale */ uint32_t tcp_swl2; /* packets to update state */ uint32_t tcp_rack; /* Seq # we have acked */ uint32_t tcp_rack_cnt; /* # of segs we have deferred ack */ uint32_t tcp_rack_cur_max; /* # of segs we may defer ack for now */ uint32_t tcp_rack_abs_max; /* # of segs we may defer ack ever */ timeout_id_t tcp_ack_tid; /* Delayed ACK timer ID */ timeout_id_t tcp_push_tid; /* Push timer ID */ uint32_t tcp_max_swnd; /* Maximum swnd we have seen */ struct tcp_s *tcp_listener; /* Our listener */ uint32_t tcp_irs; /* Initial recv seq num */ uint32_t tcp_fss; /* Final/fin send seq num */ uint32_t tcp_urg; /* Urgent data seq num */ clock_t tcp_first_timer_threshold; /* When to prod IP */ clock_t tcp_second_timer_threshold; /* When to give up completely */ clock_t tcp_first_ctimer_threshold; /* 1st threshold while connecting */ clock_t tcp_second_ctimer_threshold; /* 2nd ... while connecting */ uint32_t tcp_urp_last; /* Last urp for which signal sent */ mblk_t *tcp_urp_mp; /* T_EXDATA_IND for urgent byte */ mblk_t *tcp_urp_mark_mp; /* zero-length marked/unmarked msg */ int tcp_conn_req_cnt_q0; /* # of conn reqs in SYN_RCVD */ int tcp_conn_req_cnt_q; /* # of conn reqs in ESTABLISHED */ int tcp_conn_req_max; /* # of ESTABLISHED conn reqs allowed */ t_scalar_t tcp_conn_req_seqnum; /* Incrementing pending conn req ID */ #define tcp_ip_addr_cache tcp_reass_tail /* Cache ip addresses that */ /* complete the 3-way handshake */ kmutex_t tcp_eager_lock; struct tcp_s *tcp_eager_next_q; /* next eager in ESTABLISHED state */ struct tcp_s *tcp_eager_last_q; /* last eager in ESTABLISHED state */ struct tcp_s *tcp_eager_next_q0; /* next eager in SYN_RCVD state */ struct tcp_s *tcp_eager_prev_q0; /* prev eager in SYN_RCVD state */ /* all eagers form a circular list */ boolean_t tcp_conn_def_q0; /* move from q0 to q deferred */ union { mblk_t *tcp_eager_conn_ind; /* T_CONN_IND waiting for 3rd ack. */ mblk_t *tcp_opts_conn_req; /* T_CONN_REQ w/ options processed */ } tcp_conn; uint32_t tcp_syn_rcvd_timeout; /* How many SYN_RCVD timeout in q0 */ /* * TCP Keepalive Timer members. * All keepalive timer intervals are in milliseconds. */ int32_t tcp_ka_last_intrvl; /* Last probe interval */ timeout_id_t tcp_ka_tid; /* Keepalive timer ID */ uint32_t tcp_ka_interval; /* Keepalive interval */ /* * TCP connection is terminated if we don't hear back from the peer * for tcp_ka_abort_thres milliseconds after the first keepalive probe. * tcp_ka_rinterval is the interval in milliseconds between successive * keepalive probes. tcp_ka_cnt is the number of keepalive probes to * be sent before terminating the connection, if we don't hear back from * peer. * tcp_ka_abort_thres = tcp_ka_rinterval * tcp_ka_cnt */ uint32_t tcp_ka_rinterval; /* keepalive retransmit interval */ uint32_t tcp_ka_abort_thres; /* Keepalive abort threshold */ uint32_t tcp_ka_cnt; /* count of keepalive probes */ int32_t tcp_client_errno; /* How the client screwed up */ /* * The header template lives in conn_ht_iphc allocated by tcp_build_hdrs * We maintain three pointers into conn_ht_iphc. */ ipha_t *tcp_ipha; /* IPv4 header in conn_ht_iphc */ ip6_t *tcp_ip6h; /* IPv6 header in conn_ht_iphc */ tcpha_t *tcp_tcpha; /* TCP header in conn_ht_iphc */ uint16_t tcp_last_sent_len; /* Record length for nagle */ uint16_t tcp_last_recv_len; /* Used by DTrace */ uint16_t tcp_dupack_cnt; /* # of consequtive duplicate acks */ kmutex_t *tcp_acceptor_lockp; /* Ptr to tf_lock */ mblk_t *tcp_ordrel_mp; /* T_ordrel_ind mblk */ t_uscalar_t tcp_acceptor_id; /* ACCEPTOR_id */ int tcp_ipsec_overhead; uint_t tcp_recvtos; /* Last received IP_RECVTOS */ uint_t tcp_recvifindex; /* Last received IPV6_RCVPKTINFO */ uint_t tcp_recvhops; /* Last received IPV6_RECVHOPLIMIT */ uint_t tcp_recvtclass; /* Last received IPV6_RECVTCLASS */ ip6_hbh_t *tcp_hopopts; /* Last received IPV6_RECVHOPOPTS */ ip6_dest_t *tcp_dstopts; /* Last received IPV6_RECVDSTOPTS */ ip6_dest_t *tcp_rthdrdstopts; /* Last recv IPV6_RECVRTHDRDSTOPTS */ ip6_rthdr_t *tcp_rthdr; /* Last received IPV6_RECVRTHDR */ uint_t tcp_hopoptslen; uint_t tcp_dstoptslen; uint_t tcp_rthdrdstoptslen; uint_t tcp_rthdrlen; mblk_t *tcp_timercache; kmutex_t tcp_closelock; kcondvar_t tcp_closecv; uint8_t tcp_closed; uint8_t tcp_closeflags; mblk_t tcp_closemp; timeout_id_t tcp_linger_tid; /* Linger timer ID */ struct tcp_s *tcp_acceptor_hash; /* Acceptor hash chain */ struct tcp_s **tcp_ptpahn; /* Pointer to previous accept hash next. */ struct tcp_s *tcp_bind_hash; /* Bind hash chain */ struct tcp_s *tcp_bind_hash_port; /* tcp_t's bound to the same lport */ struct tcp_s **tcp_ptpbhn; uint_t tcp_maxpsz_multiplier; uint32_t tcp_lso_max; /* maximum LSO payload */ uint32_t tcp_ofo_fin_seq; /* Recv out of order FIN seq num */ uint32_t tcp_cwr_snd_max; struct tcp_s *tcp_saved_listener; /* saved value of listener */ uint32_t tcp_in_ack_unsent; /* ACK for unsent data cnt. */ /* * All fusion-related fields are protected by squeue. */ struct tcp_s *tcp_loopback_peer; /* peer tcp for loopback */ mblk_t *tcp_fused_sigurg_mp; /* M_PCSIG mblk for SIGURG */ uint32_t tcp_fused : 1, /* loopback tcp in fusion mode */ tcp_unfusable : 1, /* fusion not allowed on endpoint */ tcp_fused_sigurg : 1, /* send SIGURG upon draining */ tcp_fuse_to_bit_31 : 29; kmutex_t tcp_non_sq_lock; /* * This variable is accessed without any lock protection * and therefore must not be declared as a bit field along * with the rest which require such condition. */ boolean_t tcp_issocket; /* this is a socket tcp */ /* protected by the tcp_non_sq_lock lock */ uint32_t tcp_squeue_bytes; /* * tcp_closemp_used is protected by listener's tcp_eager_lock * when used for eagers. When used for a tcp in TIME_WAIT state * or in tcp_close(), it is not protected by any lock as we * do not expect any other thread to use it concurrently. * We do allow re-use of tcp_closemp in tcp_time_wait_collector() * and tcp_close() but not concurrently. */ boolean_t tcp_closemp_used; /* * previous and next eagers in the list of droppable eagers. See * the comments before MAKE_DROPPABLE(). These pointers are * protected by listener's tcp_eager_lock. */ struct tcp_s *tcp_eager_prev_drop_q0; struct tcp_s *tcp_eager_next_drop_q0; /* * Have we flow controlled xmitter? * This variable can be modified outside the squeue and hence must * not be declared as a bit field along with the rest that are * modified only within the squeue. * protected by the tcp_non_sq_lock lock. */ boolean_t tcp_flow_stopped; /* * Sender's next sequence number at the time the window was shrunk. */ uint32_t tcp_snxt_shrunk; /* * Socket generation number which is bumped when a connection attempt * is initiated. Its main purpose is to ensure that the socket does not * miss the asynchronous connected/disconnected notification. */ sock_connid_t tcp_connid; /* mblk_t used to enter TCP's squeue from the service routine. */ mblk_t *tcp_rsrv_mp; /* Mutex for accessing tcp_rsrv_mp */ kmutex_t tcp_rsrv_mp_lock; /* For connection counting. */ struct tcp_listen_cnt_s *tcp_listen_cnt; /* Segment reassembly timer. */ timeout_id_t tcp_reass_tid; /* FIN-WAIT-2 flush timeout */ uint32_t tcp_fin_wait_2_flush_interval; tcp_conn_stats_t tcp_cs; /* * The cached inbound and outbound security associations (SAs) for the * TCP signature (TCP_MD5SIG). */ void *tcp_sig_sa_in; void *tcp_sig_sa_out; #ifdef DEBUG pc_t tcmp_stk[15]; #endif } tcp_t; #ifdef DEBUG #define TCP_DEBUG_GETPCSTACK(buffer, depth) ((void) getpcstack(buffer, \ depth)) #else #define TCP_DEBUG_GETPCSTACK(buffer, depth) #endif extern void tcp_conn_reclaim(void *); extern void tcp_free(tcp_t *tcp); extern void tcp_ddi_g_init(void); extern void tcp_ddi_g_destroy(void); extern conn_t *tcp_get_conn(void *arg, tcp_stack_t *); extern mblk_t *tcp_snmp_get(queue_t *, mblk_t *, boolean_t); extern int tcp_snmp_set(queue_t *, int, int, uchar_t *, int len); /* Pad for the tf_t structure to avoid false cache line sharing. */ #define TF_CACHEL_PAD 64 /* * The TCP Fanout structure for bind and acceptor hashes. * The hash tables and their linkage (tcp_*_hash, tcp_ptp*hn) are * protected by the per-bucket tf_lock. Each tcp_t * inserted in the list points back at this lock using tcp_*_lockp. * * The bind and acceptor hash queues are lists of tcp_t. */ /* listener hash and acceptor hash queue head */ typedef struct tf_s { tcp_t *tf_tcp; kmutex_t tf_lock; unsigned char tf_pad[TF_CACHEL_PAD - (sizeof (tcp_t *) + sizeof (kmutex_t))]; } tf_t; /* Also used in ipclassifier.c */ extern struct kmem_cache *tcp_sack_info_cache; #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ /* Contract private interface between TCP and Clustering. */ #define CL_TCPI_V1 1 /* cl_tcpi_version number */ typedef struct cl_tcp_info_s { ushort_t cl_tcpi_version; /* cl_tcp_info_t's version no */ ushort_t cl_tcpi_ipversion; /* IP version */ int32_t cl_tcpi_state; /* TCP state */ in_port_t cl_tcpi_lport; /* Local port */ in_port_t cl_tcpi_fport; /* Remote port */ in6_addr_t cl_tcpi_laddr_v6; /* Local IP address */ in6_addr_t cl_tcpi_faddr_v6; /* Remote IP address */ #ifdef _KERNEL /* Note: V4_PART_OF_V6 is meant to be used only for _KERNEL defined stuff */ #define cl_tcpi_laddr V4_PART_OF_V6(cl_tcpi_laddr_v6) #define cl_tcpi_faddr V4_PART_OF_V6(cl_tcpi_faddr_v6) #endif /* _KERNEL */ } cl_tcp_info_t; /* * Hook functions to enable cluster networking * On non-clustered systems these vectors must always be NULL. */ extern void (*cl_inet_listen)(netstackid_t, uint8_t, sa_family_t, uint8_t *, in_port_t, void *); extern void (*cl_inet_unlisten)(netstackid_t, uint8_t, sa_family_t, uint8_t *, in_port_t, void *); /* * Contracted Consolidation Private ioctl for aborting TCP connections. * In order to keep the offsets and size of the structure the same between * a 32-bit application and a 64-bit amd64 kernel, we use a #pragma * pack(4). */ #define TCP_IOC_ABORT_CONN (('T' << 8) + 91) #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 #pragma pack(4) #endif typedef struct tcp_ioc_abort_conn_s { struct sockaddr_storage ac_local; /* local addr and port */ struct sockaddr_storage ac_remote; /* remote addr and port */ int32_t ac_start; /* start state */ int32_t ac_end; /* end state */ int32_t ac_zoneid; /* zoneid */ } tcp_ioc_abort_conn_t; #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 #pragma pack() #endif #ifdef __cplusplus } #endif #endif /* _INET_TCP_H */
