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* 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
* 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]
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
#include <sys/netstack.h>
#include <inet/ip.h>
#include <inet/ipdrop.h>
#include <sys/sunddi.h>
#include <sys/sunldi.h>
#ifdef __cplusplus
extern "C" {
/* 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;
} 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.
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.
clock_t tcps_last_rst_intrvl;
uint32_t tcps_rst_cnt;
/* The number of RST not sent because of the rate limit. */
uint32_t tcps_rst_unsent;
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;
typedef struct tcp_stack tcp_stack_t;
#endif /* _KERNEL */
#ifdef __cplusplus
#endif /* _INET_TCP_STACK_H */