/* * 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 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _INET_TCP_STACK_H #define _INET_TCP_STACK_H #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif /* Kstats */ typedef struct tcp_stat { kstat_named_t tcp_time_wait; kstat_named_t tcp_time_wait_syn; kstat_named_t tcp_time_wait_syn_success; kstat_named_t tcp_detach_non_time_wait; kstat_named_t tcp_detach_time_wait; kstat_named_t tcp_time_wait_reap; kstat_named_t tcp_clean_death_nondetached; kstat_named_t tcp_reinit_calls; kstat_named_t tcp_eager_err1; kstat_named_t tcp_eager_err2; kstat_named_t tcp_eager_blowoff_calls; kstat_named_t tcp_eager_blowoff_q; kstat_named_t tcp_eager_blowoff_q0; kstat_named_t tcp_not_hard_bound; kstat_named_t tcp_no_listener; kstat_named_t tcp_found_eager; kstat_named_t tcp_wrong_queue; kstat_named_t tcp_found_eager_binding1; kstat_named_t tcp_found_eager_bound1; kstat_named_t tcp_eager_has_listener1; kstat_named_t tcp_open_alloc; kstat_named_t tcp_open_detached_alloc; kstat_named_t tcp_rput_time_wait; kstat_named_t tcp_listendrop; kstat_named_t tcp_listendropq0; kstat_named_t tcp_wrong_rq; kstat_named_t tcp_rsrv_calls; kstat_named_t tcp_eagerfree2; kstat_named_t tcp_eagerfree3; kstat_named_t tcp_eagerfree4; kstat_named_t tcp_eagerfree5; kstat_named_t tcp_timewait_syn_fail; kstat_named_t tcp_listen_badflags; kstat_named_t tcp_timeout_calls; kstat_named_t tcp_timeout_cached_alloc; kstat_named_t tcp_timeout_cancel_reqs; kstat_named_t tcp_timeout_canceled; kstat_named_t tcp_timermp_freed; kstat_named_t tcp_push_timer_cnt; kstat_named_t tcp_ack_timer_cnt; kstat_named_t tcp_wsrv_called; kstat_named_t tcp_flwctl_on; kstat_named_t tcp_timer_fire_early; kstat_named_t tcp_timer_fire_miss; kstat_named_t tcp_rput_v6_error; kstat_named_t tcp_zcopy_on; kstat_named_t tcp_zcopy_off; kstat_named_t tcp_zcopy_backoff; kstat_named_t tcp_fusion_flowctl; kstat_named_t tcp_fusion_backenabled; kstat_named_t tcp_fusion_urg; kstat_named_t tcp_fusion_putnext; kstat_named_t tcp_fusion_unfusable; kstat_named_t tcp_fusion_aborted; kstat_named_t tcp_fusion_unqualified; kstat_named_t tcp_fusion_rrw_busy; kstat_named_t tcp_fusion_rrw_msgcnt; kstat_named_t tcp_fusion_rrw_plugged; kstat_named_t tcp_in_ack_unsent_drop; kstat_named_t tcp_sock_fallback; kstat_named_t tcp_lso_enabled; kstat_named_t tcp_lso_disabled; kstat_named_t tcp_lso_times; kstat_named_t tcp_lso_pkt_out; kstat_named_t tcp_listen_cnt_drop; kstat_named_t tcp_listen_mem_drop; kstat_named_t tcp_zwin_ack_syn; kstat_named_t tcp_rst_unsent; } tcp_stat_t; #define TCP_STAT(tcps, x) ((tcps)->tcps_statistics.x.value.ui64++) #define TCP_STAT_UPDATE(tcps, x, n) \ ((tcps)->tcps_statistics.x.value.ui64 += (n)) #define TCP_STAT_SET(tcps, x, n) \ ((tcps)->tcps_statistics.x.value.ui64 = (n)) typedef struct tcp_g_stat { kstat_named_t tcp_timermp_alloced; kstat_named_t tcp_timermp_allocfail; kstat_named_t tcp_timermp_allocdblfail; kstat_named_t tcp_freelist_cleanup; } tcp_g_stat_t; #ifdef _KERNEL /* * TCP stack instances */ struct tcp_stack { netstack_t *tcps_netstack; /* Common netstack */ mib2_tcp_t tcps_mib; /* * Extra privileged ports. In host byte order. * Protected by tcp_epriv_port_lock. */ #define TCP_NUM_EPRIV_PORTS 64 int tcps_g_num_epriv_ports; uint16_t tcps_g_epriv_ports[TCP_NUM_EPRIV_PORTS]; kmutex_t tcps_epriv_port_lock; /* * The smallest anonymous port in the priviledged port range which TCP * looks for free port. Use in the option TCP_ANONPRIVBIND. */ in_port_t tcps_min_anonpriv_port; /* Only modified during _init and _fini thus no locking is needed. */ caddr_t tcps_g_nd; struct tcpparam_s *tcps_params; /* ndd parameters */ struct tcpparam_s *tcps_wroff_xtra_param; /* Hint not protected by any lock */ uint_t tcps_next_port_to_try; /* TCP bind hash list - all tcp_t with state >= BOUND. */ struct tf_s *tcps_bind_fanout; /* TCP queue hash list - all tcp_t in case they will be an acceptor. */ struct tf_s *tcps_acceptor_fanout; /* * MIB-2 stuff for SNMP * Note: tcpInErrs {tcp 15} is accumulated in ip.c */ kstat_t *tcps_mibkp; /* kstat exporting tcp_mib data */ kstat_t *tcps_kstat; tcp_stat_t tcps_statistics; uint32_t tcps_iss_incr_extra; /* Incremented for each connection */ kmutex_t tcps_iss_key_lock; MD5_CTX tcps_iss_key; /* Packet dropper for TCP IPsec policy drops. */ ipdropper_t tcps_dropper; /* * These two variables control the rate for TCP to generate RSTs in * response to segments not belonging to any connections. We limit * TCP to sent out tcp_rst_sent_rate (ndd param) number of RSTs in * each 1 second interval. This is to protect TCP against DoS attack. */ int64_t tcps_last_rst_intrvl; uint32_t tcps_rst_cnt; ldi_ident_t tcps_ldi_ident; /* Used to synchronize access when reclaiming memory */ mblk_t *tcps_ixa_cleanup_mp; kmutex_t tcps_ixa_cleanup_lock; kcondvar_t tcps_ixa_cleanup_cv; /* Variables for handling kmem reclaim call back. */ kmutex_t tcps_reclaim_lock; boolean_t tcps_reclaim; timeout_id_t tcps_reclaim_tid; uint32_t tcps_reclaim_period; /* Listener connection limit configuration. */ kmutex_t tcps_listener_conf_lock; list_t tcps_listener_conf; }; typedef struct tcp_stack tcp_stack_t; #endif /* _KERNEL */ #ifdef __cplusplus } #endif #endif /* _INET_TCP_STACK_H */