17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
545916cd2Sjpk  * Common Development and Distribution License (the "License").
645916cd2Sjpk  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
2177c67f2fSkcpoon 
227c478bd9Sstevel@tonic-gate /*
23c513743fSGeorge Shepherd  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate #ifndef	_INET_SCTP_SCTP_IMPL_H
287c478bd9Sstevel@tonic-gate #define	_INET_SCTP_SCTP_IMPL_H
297c478bd9Sstevel@tonic-gate 
307c478bd9Sstevel@tonic-gate #include <sys/inttypes.h>
317c478bd9Sstevel@tonic-gate #include <sys/taskq.h>
327c478bd9Sstevel@tonic-gate #include <sys/list.h>
337c478bd9Sstevel@tonic-gate #include <sys/strsun.h>
3445916cd2Sjpk #include <sys/zone.h>
357c478bd9Sstevel@tonic-gate #include <netinet/ip6.h>
367c478bd9Sstevel@tonic-gate #include <inet/optcom.h>
377c478bd9Sstevel@tonic-gate #include <netinet/sctp.h>
387c478bd9Sstevel@tonic-gate #include <inet/sctp_itf.h>
39f4b3ec61Sdh #include "sctp_stack.h"
40f4b3ec61Sdh 
41f4b3ec61Sdh #ifdef	__cplusplus
42f4b3ec61Sdh extern "C" {
43f4b3ec61Sdh #endif
447c478bd9Sstevel@tonic-gate 
457c478bd9Sstevel@tonic-gate /* Streams device identifying info and version */
467c478bd9Sstevel@tonic-gate #define	SCTP_DEV_IDINFO	"SCTP Streams device 1.0"
477c478bd9Sstevel@tonic-gate 
487c478bd9Sstevel@tonic-gate #define	SSN_GT(a, b)	((int16_t)((a)-(b)) > 0)
497c478bd9Sstevel@tonic-gate #define	SSN_GE(a, b)	((int16_t)((a)-(b)) >= 0)
507c478bd9Sstevel@tonic-gate 
517c478bd9Sstevel@tonic-gate /* Default buffer size and flow control wake up threshold. */
527c478bd9Sstevel@tonic-gate #define	SCTP_XMIT_LOWATER	8192
537c478bd9Sstevel@tonic-gate #define	SCTP_XMIT_HIWATER	102400
547c478bd9Sstevel@tonic-gate #define	SCTP_RECV_LOWATER	8192
557c478bd9Sstevel@tonic-gate #define	SCTP_RECV_HIWATER	102400
567c478bd9Sstevel@tonic-gate 
577c478bd9Sstevel@tonic-gate /* SCTP Timer control structure */
587c478bd9Sstevel@tonic-gate typedef struct sctpt_s {
597c478bd9Sstevel@tonic-gate 	pfv_t	sctpt_pfv;	/* The routine we are to call */
607c478bd9Sstevel@tonic-gate 	struct sctp_s *sctpt_sctp;	/* The parameter we are to pass in */
617c478bd9Sstevel@tonic-gate 	struct sctp_faddr_s *sctpt_faddr;
627c478bd9Sstevel@tonic-gate } sctpt_t;
637c478bd9Sstevel@tonic-gate 
647c478bd9Sstevel@tonic-gate /*
657c478bd9Sstevel@tonic-gate  * Maximum number of duplicate TSNs we can report. This is currently
667c478bd9Sstevel@tonic-gate  * static, and governs the size of the mblk used to hold the duplicate
677c478bd9Sstevel@tonic-gate  * reports. The use of duplcate TSN reports is currently experimental,
687c478bd9Sstevel@tonic-gate  * so for now a static limit should suffice.
697c478bd9Sstevel@tonic-gate  */
707c478bd9Sstevel@tonic-gate #define	SCTP_DUP_MBLK_SZ	64
717c478bd9Sstevel@tonic-gate 
727c478bd9Sstevel@tonic-gate #define	SCTP_IS_ADDR_UNSPEC(isv4, addr)		\
737c478bd9Sstevel@tonic-gate 	((isv4) ? IN6_IS_ADDR_V4MAPPED_ANY(&(addr)) :	\
747c478bd9Sstevel@tonic-gate 	IN6_IS_ADDR_UNSPECIFIED(&(addr)))
757c478bd9Sstevel@tonic-gate 
767c478bd9Sstevel@tonic-gate /*
777c478bd9Sstevel@tonic-gate  * SCTP parameters
787c478bd9Sstevel@tonic-gate  */
797c478bd9Sstevel@tonic-gate /* Named Dispatch Parameter Management Structure */
807c478bd9Sstevel@tonic-gate typedef struct sctpparam_s {
817c478bd9Sstevel@tonic-gate 	uint32_t	sctp_param_min;
827c478bd9Sstevel@tonic-gate 	uint32_t	sctp_param_max;
837c478bd9Sstevel@tonic-gate 	uint32_t	sctp_param_val;
847c478bd9Sstevel@tonic-gate 	char		*sctp_param_name;
857c478bd9Sstevel@tonic-gate } sctpparam_t;
867c478bd9Sstevel@tonic-gate 
87f4b3ec61Sdh #define	sctps_max_init_retr		sctps_params[0].sctp_param_val
88f4b3ec61Sdh #define	sctps_max_init_retr_high	sctps_params[0].sctp_param_max
89f4b3ec61Sdh #define	sctps_max_init_retr_low		sctps_params[0].sctp_param_min
90f4b3ec61Sdh #define	sctps_pa_max_retr		sctps_params[1].sctp_param_val
91f4b3ec61Sdh #define	sctps_pa_max_retr_high		sctps_params[1].sctp_param_max
92f4b3ec61Sdh #define	sctps_pa_max_retr_low		sctps_params[1].sctp_param_min
93f4b3ec61Sdh #define	sctps_pp_max_retr		sctps_params[2].sctp_param_val
94f4b3ec61Sdh #define	sctps_pp_max_retr_high		sctps_params[2].sctp_param_max
95f4b3ec61Sdh #define	sctps_pp_max_retr_low		sctps_params[2].sctp_param_min
96f4b3ec61Sdh #define	sctps_cwnd_max_			sctps_params[3].sctp_param_val
97f4b3ec61Sdh #define	__sctps_not_used1		sctps_params[4].sctp_param_val
98f4b3ec61Sdh #define	sctps_smallest_nonpriv_port	sctps_params[5].sctp_param_val
99f4b3ec61Sdh #define	sctps_ipv4_ttl			sctps_params[6].sctp_param_val
100f4b3ec61Sdh #define	sctps_heartbeat_interval	sctps_params[7].sctp_param_val
101f4b3ec61Sdh #define	sctps_heartbeat_interval_high	sctps_params[7].sctp_param_max
102f4b3ec61Sdh #define	sctps_heartbeat_interval_low	sctps_params[7].sctp_param_min
103f4b3ec61Sdh #define	sctps_initial_mtu		sctps_params[8].sctp_param_val
104f4b3ec61Sdh #define	sctps_mtu_probe_interval	sctps_params[9].sctp_param_val
105f4b3ec61Sdh #define	sctps_new_secret_interval	sctps_params[10].sctp_param_val
106f4b3ec61Sdh #define	sctps_deferred_ack_interval	sctps_params[11].sctp_param_val
107f4b3ec61Sdh #define	sctps_snd_lowat_fraction	sctps_params[12].sctp_param_val
108f4b3ec61Sdh #define	sctps_ignore_path_mtu		sctps_params[13].sctp_param_val
109f4b3ec61Sdh #define	sctps_initial_ssthresh		sctps_params[14].sctp_param_val
110f4b3ec61Sdh #define	sctps_smallest_anon_port	sctps_params[15].sctp_param_val
111f4b3ec61Sdh #define	sctps_largest_anon_port		sctps_params[16].sctp_param_val
112f4b3ec61Sdh #define	sctps_xmit_hiwat		sctps_params[17].sctp_param_val
113f4b3ec61Sdh #define	sctps_xmit_lowat		sctps_params[18].sctp_param_val
114f4b3ec61Sdh #define	sctps_recv_hiwat		sctps_params[19].sctp_param_val
115f4b3ec61Sdh #define	sctps_max_buf			sctps_params[20].sctp_param_val
116f4b3ec61Sdh #define	sctps_rtt_updates		sctps_params[21].sctp_param_val
117f4b3ec61Sdh #define	sctps_ipv6_hoplimit		sctps_params[22].sctp_param_val
118f4b3ec61Sdh #define	sctps_rto_ming			sctps_params[23].sctp_param_val
119f4b3ec61Sdh #define	sctps_rto_ming_high		sctps_params[23].sctp_param_max
120f4b3ec61Sdh #define	sctps_rto_ming_low		sctps_params[23].sctp_param_min
121f4b3ec61Sdh #define	sctps_rto_maxg			sctps_params[24].sctp_param_val
122f4b3ec61Sdh #define	sctps_rto_maxg_high		sctps_params[24].sctp_param_max
123f4b3ec61Sdh #define	sctps_rto_maxg_low		sctps_params[24].sctp_param_min
124f4b3ec61Sdh #define	sctps_rto_initialg		sctps_params[25].sctp_param_val
125f4b3ec61Sdh #define	sctps_rto_initialg_high		sctps_params[25].sctp_param_max
126f4b3ec61Sdh #define	sctps_rto_initialg_low		sctps_params[25].sctp_param_min
127f4b3ec61Sdh #define	sctps_cookie_life		sctps_params[26].sctp_param_val
128f4b3ec61Sdh #define	sctps_cookie_life_high		sctps_params[26].sctp_param_max
129f4b3ec61Sdh #define	sctps_cookie_life_low		sctps_params[26].sctp_param_min
130f4b3ec61Sdh #define	sctps_max_in_streams		sctps_params[27].sctp_param_val
131f4b3ec61Sdh #define	sctps_max_in_streams_high	sctps_params[27].sctp_param_max
132f4b3ec61Sdh #define	sctps_max_in_streams_low	sctps_params[27].sctp_param_min
133f4b3ec61Sdh #define	sctps_initial_out_streams	sctps_params[28].sctp_param_val
134f4b3ec61Sdh #define	sctps_initial_out_streams_high	sctps_params[28].sctp_param_max
135f4b3ec61Sdh #define	sctps_initial_out_streams_low	sctps_params[28].sctp_param_min
136f4b3ec61Sdh #define	sctps_shutack_wait_bound	sctps_params[29].sctp_param_val
137f4b3ec61Sdh #define	sctps_maxburst			sctps_params[30].sctp_param_val
138f4b3ec61Sdh #define	sctps_addip_enabled		sctps_params[31].sctp_param_val
139f4b3ec61Sdh #define	sctps_recv_hiwat_minmss		sctps_params[32].sctp_param_val
140f4b3ec61Sdh #define	sctps_slow_start_initial	sctps_params[33].sctp_param_val
141f4b3ec61Sdh #define	sctps_slow_start_after_idle	sctps_params[34].sctp_param_val
142f4b3ec61Sdh #define	sctps_prsctp_enabled		sctps_params[35].sctp_param_val
143f4b3ec61Sdh #define	sctps_fast_rxt_thresh		sctps_params[36].sctp_param_val
144f4b3ec61Sdh #define	sctps_deferred_acks_max		sctps_params[37].sctp_param_val
145f4b3ec61Sdh 
1467c478bd9Sstevel@tonic-gate /*
1477c478bd9Sstevel@tonic-gate  * sctp_wroff_xtra is the extra space in front of SCTP/IP header for link
1487c478bd9Sstevel@tonic-gate  * layer header.  It has to be a multiple of 4.
1497c478bd9Sstevel@tonic-gate  */
150f4b3ec61Sdh #define	sctps_wroff_xtra	sctps_wroff_xtra_param->sctp_param_val
1517c478bd9Sstevel@tonic-gate 
15277c67f2fSkcpoon /*
15377c67f2fSkcpoon  * Retransmission timer start and stop macro for a given faddr.
15477c67f2fSkcpoon  */
15577c67f2fSkcpoon #define	SCTP_FADDR_TIMER_RESTART(sctp, fp, intvl)			\
15677c67f2fSkcpoon {									\
15777c67f2fSkcpoon 	dprint(3, ("faddr_timer_restart: fp=%p %x:%x:%x:%x %d\n",	\
15877c67f2fSkcpoon 	    (void *)(fp), SCTP_PRINTADDR((fp)->faddr), (int)(intvl)));	\
15977c67f2fSkcpoon 	sctp_timer((sctp), (fp)->timer_mp, (intvl));			\
16077c67f2fSkcpoon 	(fp)->timer_running = 1;					\
16177c67f2fSkcpoon }
16277c67f2fSkcpoon 
16377c67f2fSkcpoon #define	SCTP_FADDR_TIMER_STOP(fp)			\
16477c67f2fSkcpoon 	ASSERT((fp)->timer_mp != NULL);			\
16577c67f2fSkcpoon 	if ((fp)->timer_running) {			\
16677c67f2fSkcpoon 		sctp_timer_stop((fp)->timer_mp);	\
16777c67f2fSkcpoon 		(fp)->timer_running = 0;		\
16877c67f2fSkcpoon 	}
16977c67f2fSkcpoon 
170*9f13099eSGeorge Shepherd /* For per endpoint association statistics */
171*9f13099eSGeorge Shepherd #define	SCTP_MAX_RTO(sctp, fp) {			\
172*9f13099eSGeorge Shepherd 	/*						\
173*9f13099eSGeorge Shepherd 	 * Record the maximum observed RTO,		\
174*9f13099eSGeorge Shepherd 	 * sctp_maxrto is zeroed elsewhere		\
175*9f13099eSGeorge Shepherd 	 * at the end of each stats request.		\
176*9f13099eSGeorge Shepherd 	 */						\
177*9f13099eSGeorge Shepherd 	(sctp)->sctp_maxrto =				\
178*9f13099eSGeorge Shepherd 	    MAX((sctp)->sctp_maxrto, (fp)->rto);	\
179*9f13099eSGeorge Shepherd 	DTRACE_PROBE2(sctp__maxrto, sctp_t *,		\
180*9f13099eSGeorge Shepherd 	    sctp, struct sctp_faddr_s, fp);		\
181*9f13099eSGeorge Shepherd }
182*9f13099eSGeorge Shepherd 
183*9f13099eSGeorge Shepherd #define	SCTP_CALC_RXT(sctp, fp)				\
184*9f13099eSGeorge Shepherd {							\
185*9f13099eSGeorge Shepherd 	if (((fp)->rto <<= 1) > (sctp)->sctp_rto_max)	\
186*9f13099eSGeorge Shepherd 		(fp)->rto = (sctp)->sctp_rto_max;	\
187*9f13099eSGeorge Shepherd 	SCTP_MAX_RTO(sctp, fp);				\
18877c67f2fSkcpoon }
18977c67f2fSkcpoon 
19077c67f2fSkcpoon 
1917c478bd9Sstevel@tonic-gate #define	SCTP_MAX_COMBINED_HEADER_LENGTH	(60 + 12) /* Maxed out ip + sctp */
1927c478bd9Sstevel@tonic-gate #define	SCTP_MAX_IP_OPTIONS_LENGTH	(60 - IP_SIMPLE_HDR_LENGTH)
1937c478bd9Sstevel@tonic-gate #define	SCTP_MAX_HDR_LENGTH		60
1947c478bd9Sstevel@tonic-gate 
1957c478bd9Sstevel@tonic-gate #define	SCTP_SECRET_LEN	16
1967c478bd9Sstevel@tonic-gate 
1977c478bd9Sstevel@tonic-gate #define	SCTP_REFHOLD(sctp) {			\
1987c478bd9Sstevel@tonic-gate 	mutex_enter(&(sctp)->sctp_reflock);	\
1997c478bd9Sstevel@tonic-gate 	(sctp)->sctp_refcnt++;			\
2007c478bd9Sstevel@tonic-gate 	ASSERT((sctp)->sctp_refcnt != 0);	\
2017c478bd9Sstevel@tonic-gate 	mutex_exit(&(sctp)->sctp_reflock);	\
2027c478bd9Sstevel@tonic-gate }
2037c478bd9Sstevel@tonic-gate 
2047c478bd9Sstevel@tonic-gate #define	SCTP_REFRELE(sctp) {				\
2057c478bd9Sstevel@tonic-gate 	mutex_enter(&(sctp)->sctp_reflock);		\
2067c478bd9Sstevel@tonic-gate 	ASSERT((sctp)->sctp_refcnt != 0);		\
2077c478bd9Sstevel@tonic-gate 	if (--(sctp)->sctp_refcnt == 0) {		\
2087c478bd9Sstevel@tonic-gate 		mutex_exit(&(sctp)->sctp_reflock);	\
2097c478bd9Sstevel@tonic-gate 		CONN_DEC_REF((sctp)->sctp_connp);	\
2107c478bd9Sstevel@tonic-gate 	} else {					\
2117c478bd9Sstevel@tonic-gate 		mutex_exit(&(sctp)->sctp_reflock);	\
2127c478bd9Sstevel@tonic-gate 	}						\
2137c478bd9Sstevel@tonic-gate }
2147c478bd9Sstevel@tonic-gate 
215f4b3ec61Sdh #define	SCTP_G_Q_REFHOLD(sctps) {					\
216f4b3ec61Sdh 	atomic_add_32(&(sctps)->sctps_g_q_ref, 1);			\
217f4b3ec61Sdh 	ASSERT((sctps)->sctps_g_q_ref != 0);				\
218f4b3ec61Sdh 	DTRACE_PROBE1(sctp__g__q__refhold, sctp_stack_t, sctps);	\
219f4b3ec61Sdh }
220f4b3ec61Sdh 
221f4b3ec61Sdh /*
222f4b3ec61Sdh  * Decrement the reference count on sctp_g_q
223f4b3ec61Sdh  * In architectures e.g sun4u, where atomic_add_32_nv is just
224f4b3ec61Sdh  * a cas, we need to maintain the right memory barrier semantics
225f4b3ec61Sdh  * as that of mutex_exit i.e all the loads and stores should complete
226f4b3ec61Sdh  * before the cas is executed. membar_exit() does that here.
227f4b3ec61Sdh  */
228f4b3ec61Sdh #define	SCTP_G_Q_REFRELE(sctps) {					\
229f4b3ec61Sdh 	ASSERT((sctps)->sctps_g_q_ref != 0);				\
230f4b3ec61Sdh 	membar_exit();							\
231f4b3ec61Sdh 	DTRACE_PROBE1(sctp__g__q__refrele, sctp_stack_t, sctps);	\
232f4b3ec61Sdh 	if (atomic_add_32_nv(&(sctps)->sctps_g_q_ref, -1) == 0)		\
233f4b3ec61Sdh 		sctp_g_q_inactive(sctps);				\
234f4b3ec61Sdh }
235f4b3ec61Sdh 
2367c478bd9Sstevel@tonic-gate #define	SCTP_PRINTADDR(a)	(a).s6_addr32[0], (a).s6_addr32[1],\
2377c478bd9Sstevel@tonic-gate 				(a).s6_addr32[2], (a).s6_addr32[3]
2387c478bd9Sstevel@tonic-gate 
2397c478bd9Sstevel@tonic-gate #define	CONN2SCTP(conn)	((sctp_t *)(&((conn_t *)conn)[1]))
2407c478bd9Sstevel@tonic-gate 
2417c478bd9Sstevel@tonic-gate /*
2427c478bd9Sstevel@tonic-gate  * Outbound data, flags and macros for per-message, per-chunk info
2437c478bd9Sstevel@tonic-gate  */
2447c478bd9Sstevel@tonic-gate typedef struct {
2457c478bd9Sstevel@tonic-gate 	int64_t		smh_ttl;		/* Time to Live */
2467c478bd9Sstevel@tonic-gate 	int64_t		smh_tob;		/* Time of Birth */
2477c478bd9Sstevel@tonic-gate 	uint32_t	smh_context;
2487c478bd9Sstevel@tonic-gate 	uint16_t	smh_sid;
2497c478bd9Sstevel@tonic-gate 	uint16_t	smh_ssn;
2507c478bd9Sstevel@tonic-gate 	uint32_t	smh_ppid;
2517c478bd9Sstevel@tonic-gate 	uint16_t	smh_flags;
2527c478bd9Sstevel@tonic-gate 	uint32_t	smh_msglen;
2537c478bd9Sstevel@tonic-gate } sctp_msg_hdr_t;
2547c478bd9Sstevel@tonic-gate 
2557c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_FLAG_SENT		0x01
2567c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_FLAG_REXMIT		0x02
2577c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_FLAG_ACKED		0x04
2587c478bd9Sstevel@tonic-gate #define	SCTP_MSG_FLAG_CHUNKED		0x08
2597c478bd9Sstevel@tonic-gate #define	SCTP_MSG_FLAG_ABANDONED		0x10
2607c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_FLAG_ABANDONED	0x20
2617c478bd9Sstevel@tonic-gate 
2627c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_CLEAR_FLAGS(mp) ((mp)->b_flag = 0)
2637c478bd9Sstevel@tonic-gate /*
2647c478bd9Sstevel@tonic-gate  * If we are transmitting the chunk for the first time we assign the TSN and
2657c478bd9Sstevel@tonic-gate  * SSN here. The reason we assign the SSN here (as opposed to doing it in
2667c478bd9Sstevel@tonic-gate  * sctp_chunkify()) is that the chunk may expire, if PRSCTP is enabled, before
2677c478bd9Sstevel@tonic-gate  * we get a chance to send it out. If we assign the SSN in sctp_chunkify()
2687c478bd9Sstevel@tonic-gate  * and this happens, then we need to send a Forward TSN to the peer, which
2697c478bd9Sstevel@tonic-gate  * will be expecting this SSN, assuming ordered. If we assign it here we
2707c478bd9Sstevel@tonic-gate  * can just take out the chunk from the transmit list without having to
2717c478bd9Sstevel@tonic-gate  * send a Forward TSN chunk. While assigning the SSN we use (meta)->b_cont
2727c478bd9Sstevel@tonic-gate  * to determine if it needs a new SSN (i.e. the next SSN for the stream),
2737c478bd9Sstevel@tonic-gate  * since (meta)->b_cont signifies the first chunk of a message (if the message
2747c478bd9Sstevel@tonic-gate  * is unordered, then the SSN is 0).
2757c478bd9Sstevel@tonic-gate  *
2767c478bd9Sstevel@tonic-gate  */
2777c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_SENT(sctp, mp, sdc, fp, chunkdata, meta) {		\
2787c478bd9Sstevel@tonic-gate 	if (!SCTP_CHUNK_ISSENT(mp)) {					\
2797c478bd9Sstevel@tonic-gate 		sctp_msg_hdr_t	*mhdr = (sctp_msg_hdr_t *)(meta)->b_rptr; \
2807c478bd9Sstevel@tonic-gate 		ASSERT(!SCTP_CHUNK_ABANDONED(mp));			\
2817c478bd9Sstevel@tonic-gate 		(mp)->b_flag = SCTP_CHUNK_FLAG_SENT;			\
2827c478bd9Sstevel@tonic-gate 		(sdc)->sdh_tsn = htonl((sctp)->sctp_ltsn++);		\
2837c478bd9Sstevel@tonic-gate 		if ((mhdr)->smh_flags & MSG_UNORDERED) {		\
2847c478bd9Sstevel@tonic-gate 			(sdc)->sdh_ssn = 0;				\
2857c478bd9Sstevel@tonic-gate 			SCTP_DATA_SET_UBIT(sdc);			\
2867c478bd9Sstevel@tonic-gate 			BUMP_LOCAL((sctp)->sctp_oudchunks);		\
2877c478bd9Sstevel@tonic-gate 		} else {						\
2887c478bd9Sstevel@tonic-gate 			BUMP_LOCAL((sctp)->sctp_odchunks);		\
2897c478bd9Sstevel@tonic-gate 			if ((mp) == (meta)->b_cont) {			\
2907c478bd9Sstevel@tonic-gate 				mhdr->smh_ssn = htons(			\
2917c478bd9Sstevel@tonic-gate 				    (sctp)->sctp_ostrcntrs[mhdr->smh_sid]++); \
2927c478bd9Sstevel@tonic-gate 			}						\
2937c478bd9Sstevel@tonic-gate 			(sdc)->sdh_ssn = mhdr->smh_ssn;			\
2947c478bd9Sstevel@tonic-gate 		}							\
2957c478bd9Sstevel@tonic-gate 		(sctp)->sctp_unacked += (chunkdata);			\
2967c478bd9Sstevel@tonic-gate 		(sctp)->sctp_unsent -= (chunkdata);			\
2977c478bd9Sstevel@tonic-gate 		(sctp)->sctp_frwnd -= (chunkdata);			\
2987c478bd9Sstevel@tonic-gate 	} else {							\
2997c478bd9Sstevel@tonic-gate 		if (SCTP_CHUNK_ISACKED(mp)) {				\
3007c478bd9Sstevel@tonic-gate 			(sctp)->sctp_unacked += (chunkdata);		\
3017c478bd9Sstevel@tonic-gate 		} else {						\
3027c478bd9Sstevel@tonic-gate 			ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \
3037c478bd9Sstevel@tonic-gate 							sizeof (*sdc))); \
3047c478bd9Sstevel@tonic-gate 			SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + 	\
3057c478bd9Sstevel@tonic-gate 					sizeof (*sdc));			\
3067c478bd9Sstevel@tonic-gate 		}							\
3077c478bd9Sstevel@tonic-gate 		(mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT |		\
3087c478bd9Sstevel@tonic-gate 			SCTP_CHUNK_FLAG_ACKED);				\
3097c478bd9Sstevel@tonic-gate 		SCTP_CHUNK_SET_SACKCNT(mp, 0);				\
3107c478bd9Sstevel@tonic-gate 		BUMP_LOCAL(sctp->sctp_rxtchunks);			\
3117c478bd9Sstevel@tonic-gate 		BUMP_LOCAL((sctp)->sctp_T3expire);			\
3127c478bd9Sstevel@tonic-gate 		BUMP_LOCAL((fp)->T3expire);				\
3137c478bd9Sstevel@tonic-gate 	}								\
3147c478bd9Sstevel@tonic-gate 	SCTP_SET_CHUNK_DEST(mp, fp);					\
3157c478bd9Sstevel@tonic-gate 	(fp)->suna += ((chunkdata) + sizeof (*sdc));			\
3167c478bd9Sstevel@tonic-gate }
3177c478bd9Sstevel@tonic-gate 
3187c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_ISSENT(mp)	((mp)->b_flag & SCTP_CHUNK_FLAG_SENT)
3197c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_CANSEND(mp)	\
3207c478bd9Sstevel@tonic-gate 	(!(SCTP_CHUNK_ABANDONED(mp)) &&	\
3217c478bd9Sstevel@tonic-gate 	(((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \
3227c478bd9Sstevel@tonic-gate 	SCTP_CHUNK_FLAG_SENT))
3237c478bd9Sstevel@tonic-gate 
3247c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_DEST(mp)		((sctp_faddr_t *)(mp)->b_queue)
3257c478bd9Sstevel@tonic-gate #define	SCTP_SET_CHUNK_DEST(mp, fp)	((mp)->b_queue = (queue_t *)fp)
3267c478bd9Sstevel@tonic-gate 
3277c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_REXMIT(mp)	((mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT)
3287c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT)
3297c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT)
3307c478bd9Sstevel@tonic-gate 
3317c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_ACKED(mp) \
3327c478bd9Sstevel@tonic-gate 	((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED))
3337c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_ISACKED(mp)	((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED)
3347c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_CLEAR_ACKED(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED)
3357c478bd9Sstevel@tonic-gate 
3367c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_SACKCNT(mp)	((intptr_t)((mp)->b_prev))
3377c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \
3387c478bd9Sstevel@tonic-gate 					(mblk_t *)(uintptr_t)(val))
3397c478bd9Sstevel@tonic-gate 
3407c478bd9Sstevel@tonic-gate #define	SCTP_MSG_SET_CHUNKED(mp)	((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED)
3417c478bd9Sstevel@tonic-gate #define	SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED)
3427c478bd9Sstevel@tonic-gate #define	SCTP_IS_MSG_CHUNKED(mp)	((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED)
3437c478bd9Sstevel@tonic-gate 
3447c478bd9Sstevel@tonic-gate /* For PR-SCTP */
3457c478bd9Sstevel@tonic-gate #define	SCTP_ABANDON_CHUNK(mp)	((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED)
3467c478bd9Sstevel@tonic-gate #define	SCTP_CHUNK_ABANDONED(mp) \
3477c478bd9Sstevel@tonic-gate 	((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED)
3487c478bd9Sstevel@tonic-gate 
3497c478bd9Sstevel@tonic-gate #define	SCTP_MSG_SET_ABANDONED(mp)	\
3507c478bd9Sstevel@tonic-gate 	((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED)
3517c478bd9Sstevel@tonic-gate #define	SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED)
3527c478bd9Sstevel@tonic-gate #define	SCTP_IS_MSG_ABANDONED(mp)	((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED)
3537c478bd9Sstevel@tonic-gate 
3547c478bd9Sstevel@tonic-gate /*
3557c478bd9Sstevel@tonic-gate  * Check if a message has expired.  A message is expired if
3567c478bd9Sstevel@tonic-gate  *	1. It has a non-zero time to live value and has not been sent before
3577c478bd9Sstevel@tonic-gate  *	that time expires.
3587c478bd9Sstevel@tonic-gate  *	2. It is sent using PRSCTP and it has not been SACK'ed before
3597c478bd9Sstevel@tonic-gate  *	its lifetime expires.
3607c478bd9Sstevel@tonic-gate  */
3617c478bd9Sstevel@tonic-gate #define	SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp)			     \
3627c478bd9Sstevel@tonic-gate 	(((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) ||     \
3637c478bd9Sstevel@tonic-gate 	((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \
3647c478bd9Sstevel@tonic-gate 	((lbolt64 - (mhdr)->smh_tob) > (mhdr)->smh_ttl))
3657c478bd9Sstevel@tonic-gate 
3667c478bd9Sstevel@tonic-gate /* SCTP association hash function. */
367f4b3ec61Sdh #define	SCTP_CONN_HASH(sctps, ports)			\
368f4b3ec61Sdh 	((((ports) ^ ((ports) >> 16)) * 31) & 		\
369f4b3ec61Sdh 	    ((sctps)->sctps_conn_hash_size - 1))
3707c478bd9Sstevel@tonic-gate 
3717c478bd9Sstevel@tonic-gate /*
3727c478bd9Sstevel@tonic-gate  * Bind hash array size and hash function.  The size must be a power
3737c478bd9Sstevel@tonic-gate  * of 2 and lport must be in host byte order.
3747c478bd9Sstevel@tonic-gate  */
3757c478bd9Sstevel@tonic-gate #define	SCTP_BIND_FANOUT_SIZE	2048
3767c478bd9Sstevel@tonic-gate #define	SCTP_BIND_HASH(lport)	(((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1))
3777c478bd9Sstevel@tonic-gate 
3787c478bd9Sstevel@tonic-gate /* options that SCTP negotiates during association establishment */
3797c478bd9Sstevel@tonic-gate #define	SCTP_PRSCTP_OPTION	0x01
3807c478bd9Sstevel@tonic-gate 
3817c478bd9Sstevel@tonic-gate /*
3827c478bd9Sstevel@tonic-gate  * Listener hash array size and hash function.  The size must be a power
3837c478bd9Sstevel@tonic-gate  * of 2 and lport must be in host byte order.
3847c478bd9Sstevel@tonic-gate  */
3857c478bd9Sstevel@tonic-gate #define	SCTP_LISTEN_FANOUT_SIZE	512
3867c478bd9Sstevel@tonic-gate #define	SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1))
3877c478bd9Sstevel@tonic-gate 
3887c478bd9Sstevel@tonic-gate typedef struct sctp_tf_s {
3897c478bd9Sstevel@tonic-gate 	struct sctp_s	*tf_sctp;
3907c478bd9Sstevel@tonic-gate 	kmutex_t	tf_lock;
3917c478bd9Sstevel@tonic-gate } sctp_tf_t;
3927c478bd9Sstevel@tonic-gate 
3937c478bd9Sstevel@tonic-gate /* Round up the value to the nearest mss. */
3947c478bd9Sstevel@tonic-gate #define	MSS_ROUNDUP(value, mss)		((((value) - 1) / (mss) + 1) * (mss))
3957c478bd9Sstevel@tonic-gate 
3967c478bd9Sstevel@tonic-gate extern sin_t	sctp_sin_null;	/* Zero address for quick clears */
3977c478bd9Sstevel@tonic-gate extern sin6_t	sctp_sin6_null;	/* Zero address for quick clears */
3987c478bd9Sstevel@tonic-gate 
3997c478bd9Sstevel@tonic-gate #define	SCTP_IS_DETACHED(sctp)		((sctp)->sctp_detached)
4007c478bd9Sstevel@tonic-gate 
4017c478bd9Sstevel@tonic-gate /*
4027c478bd9Sstevel@tonic-gate  * Object to represent database of options to search passed to
4037c478bd9Sstevel@tonic-gate  * {sock,tpi}optcom_req() interface routine to take care of option
4047c478bd9Sstevel@tonic-gate  * management and associated methods.
4057c478bd9Sstevel@tonic-gate  * XXX These and other externs should ideally move to a SCTP header
4067c478bd9Sstevel@tonic-gate  */
4077c478bd9Sstevel@tonic-gate extern optdb_obj_t	sctp_opt_obj;
4087c478bd9Sstevel@tonic-gate extern uint_t		sctp_max_optbuf_len;
4097c478bd9Sstevel@tonic-gate 
4107c478bd9Sstevel@tonic-gate /* Data structure used to track received TSNs */
4117c478bd9Sstevel@tonic-gate typedef struct sctp_set_s {
4127c478bd9Sstevel@tonic-gate 	struct sctp_set_s *next;
4137c478bd9Sstevel@tonic-gate 	struct sctp_set_s *prev;
4147c478bd9Sstevel@tonic-gate 	uint32_t begin;
4157c478bd9Sstevel@tonic-gate 	uint32_t end;
4167c478bd9Sstevel@tonic-gate } sctp_set_t;
4177c478bd9Sstevel@tonic-gate 
4187c478bd9Sstevel@tonic-gate /* Data structure used to track TSNs for PR-SCTP */
4197c478bd9Sstevel@tonic-gate typedef struct sctp_ftsn_set_s {
4207c478bd9Sstevel@tonic-gate 	struct sctp_ftsn_set_s *next;
4217c478bd9Sstevel@tonic-gate 	ftsn_entry_t	ftsn_entries;
4227c478bd9Sstevel@tonic-gate } sctp_ftsn_set_t;
4237c478bd9Sstevel@tonic-gate 
4247c478bd9Sstevel@tonic-gate /* Data structure used to track incoming SCTP streams */
4257c478bd9Sstevel@tonic-gate typedef struct sctp_instr_s {
4267c478bd9Sstevel@tonic-gate 	mblk_t		*istr_msgs;
4277c478bd9Sstevel@tonic-gate 	int		istr_nmsgs;
4287c478bd9Sstevel@tonic-gate 	uint16_t	nextseq;
4297c478bd9Sstevel@tonic-gate 	struct sctp_s	*sctp;
4307c478bd9Sstevel@tonic-gate 	mblk_t		*istr_reass;
4317c478bd9Sstevel@tonic-gate } sctp_instr_t;
4327c478bd9Sstevel@tonic-gate 
4337c478bd9Sstevel@tonic-gate /* Reassembly data structure (per-stream) */
4347c478bd9Sstevel@tonic-gate typedef struct sctp_reass_s {
4357c478bd9Sstevel@tonic-gate 	uint16_t	ssn;
4367c478bd9Sstevel@tonic-gate 	uint16_t	needed;
4377c478bd9Sstevel@tonic-gate 	uint16_t	got;
4387d546a59Svi 	uint16_t	msglen;		/* len of consecutive fragments */
4397d546a59Svi 					/* from the begining (B-bit) */
4407c478bd9Sstevel@tonic-gate 	mblk_t		*tail;
4417d546a59Svi 	boolean_t	hasBchunk;	/* If the fragment list begins with */
4427d546a59Svi 					/* a B-bit set chunk */
4437d546a59Svi 	uint32_t	nexttsn;	/* TSN of the next fragment we */
4447d546a59Svi 					/* are expecting */
4457c478bd9Sstevel@tonic-gate 	boolean_t	partial_delivered;
4467c478bd9Sstevel@tonic-gate } sctp_reass_t;
4477c478bd9Sstevel@tonic-gate 
4487c478bd9Sstevel@tonic-gate /* debugging */
4497c478bd9Sstevel@tonic-gate #undef	dprint
45045916cd2Sjpk #ifdef DEBUG
4517c478bd9Sstevel@tonic-gate extern int sctpdebug;
4527c478bd9Sstevel@tonic-gate #define	dprint(level, args)	{ if (sctpdebug > (level)) printf args; }
45345916cd2Sjpk #else
4547c478bd9Sstevel@tonic-gate #define	dprint(level, args) {}
45545916cd2Sjpk #endif
4567c478bd9Sstevel@tonic-gate 
4577c478bd9Sstevel@tonic-gate 
4587c478bd9Sstevel@tonic-gate /* Peer address tracking */
4597c478bd9Sstevel@tonic-gate 
4607c478bd9Sstevel@tonic-gate /*
4617c478bd9Sstevel@tonic-gate  * States for peer addresses
4627c478bd9Sstevel@tonic-gate  *
4637c478bd9Sstevel@tonic-gate  * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address
4647c478bd9Sstevel@tonic-gate  *     before, mark it as unconfirmed so that we will not send data to it.
4657c478bd9Sstevel@tonic-gate  *     All addresses initially are in unconfirmed state and required
4667c478bd9Sstevel@tonic-gate  *     validation.  SCTP sends a heartbeat to each of them and when it gets
4677c478bd9Sstevel@tonic-gate  *     back a heartbeat ACK, the address will be marked as alive.  This
4687c478bd9Sstevel@tonic-gate  *     validation fixes a security issue with multihoming.  If an attacker
4697c478bd9Sstevel@tonic-gate  *     establishes an association with us and tells us that it has addresses
4707c478bd9Sstevel@tonic-gate  *     belonging to another host A, this will prevent A from communicating
4717c478bd9Sstevel@tonic-gate  *     with us.  This is fixed by peer address validation.  In the above case,
4727c478bd9Sstevel@tonic-gate  *     A will respond with an abort.
4737c478bd9Sstevel@tonic-gate  *
4747c478bd9Sstevel@tonic-gate  * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with
4757c478bd9Sstevel@tonic-gate  *     it with no problem.
4767c478bd9Sstevel@tonic-gate  *
4777c478bd9Sstevel@tonic-gate  * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this
4787c478bd9Sstevel@tonic-gate  *     peer address.  Once an address is marked down, we will only send
4797c478bd9Sstevel@tonic-gate  *     a heartbeat to it every hb_interval in case it becomes alive now.
4807c478bd9Sstevel@tonic-gate  *
4817c478bd9Sstevel@tonic-gate  * SCTP_FADDRS_UNREACH: there is no suitable source address to send to
4827c478bd9Sstevel@tonic-gate  *     this peer address.  For example, the peer address is v6 but we only
4837c478bd9Sstevel@tonic-gate  *     have v4 addresses.  It is marked unreachable until there is an
4847c478bd9Sstevel@tonic-gate  *     address configuration change.  At that time, mark these addresses
4857c478bd9Sstevel@tonic-gate  *     as unconfirmed and try again to see if those unreachable addresses
4867c478bd9Sstevel@tonic-gate  *     are OK as we may have more source addresses.
4877c478bd9Sstevel@tonic-gate  */
4887c478bd9Sstevel@tonic-gate typedef enum {
4897c478bd9Sstevel@tonic-gate 	SCTP_FADDRS_UNREACH,
4907c478bd9Sstevel@tonic-gate 	SCTP_FADDRS_DOWN,
4917c478bd9Sstevel@tonic-gate 	SCTP_FADDRS_ALIVE,
4927c478bd9Sstevel@tonic-gate 	SCTP_FADDRS_UNCONFIRMED
4937c478bd9Sstevel@tonic-gate } faddr_state_t;
4947c478bd9Sstevel@tonic-gate 
4957c478bd9Sstevel@tonic-gate typedef struct sctp_faddr_s {
4967c478bd9Sstevel@tonic-gate 	struct sctp_faddr_s *next;
4977c478bd9Sstevel@tonic-gate 	faddr_state_t	state;
4987c478bd9Sstevel@tonic-gate 
4997c478bd9Sstevel@tonic-gate 	in6_addr_t	faddr;
5007c478bd9Sstevel@tonic-gate 	in6_addr_t	saddr;
5017c478bd9Sstevel@tonic-gate 
5027c478bd9Sstevel@tonic-gate 	int64_t		hb_expiry;	/* time to retransmit heartbeat */
5037c478bd9Sstevel@tonic-gate 	uint32_t	hb_interval;	/* the heartbeat interval */
5047c478bd9Sstevel@tonic-gate 
5057c478bd9Sstevel@tonic-gate 	int		rto;		/* RTO in tick */
5067c478bd9Sstevel@tonic-gate 	int		srtt;		/* Smoothed RTT in tick */
5077c478bd9Sstevel@tonic-gate 	int		rttvar;		/* RTT variance in tick */
5087c478bd9Sstevel@tonic-gate 	uint32_t	rtt_updates;
5097c478bd9Sstevel@tonic-gate 	int		strikes;
5107c478bd9Sstevel@tonic-gate 	int		max_retr;
5117c478bd9Sstevel@tonic-gate 	uint32_t	sfa_pmss;
5127c478bd9Sstevel@tonic-gate 	uint32_t	cwnd;
5137c478bd9Sstevel@tonic-gate 	uint32_t	ssthresh;
5147c478bd9Sstevel@tonic-gate 	uint32_t	suna;		/* sent - unack'ed */
5157c478bd9Sstevel@tonic-gate 	uint32_t	pba;		/* partial bytes acked */
5167c478bd9Sstevel@tonic-gate 	uint32_t	acked;
5177c478bd9Sstevel@tonic-gate 	int64_t		lastactive;
5187c478bd9Sstevel@tonic-gate 	mblk_t		*timer_mp;	/* retransmission timer control */
5197c478bd9Sstevel@tonic-gate 	uint32_t
5207c478bd9Sstevel@tonic-gate 			hb_pending : 1,
5217c478bd9Sstevel@tonic-gate 			timer_running : 1,
5227c478bd9Sstevel@tonic-gate 			df : 1,
5237c478bd9Sstevel@tonic-gate 			pmtu_discovered : 1,
5247c478bd9Sstevel@tonic-gate 
5257c478bd9Sstevel@tonic-gate 			rc_timer_running : 1,
526c31292eeSkcpoon 			isv4 : 1,
527c31292eeSkcpoon 			hb_enabled : 1;
5287c478bd9Sstevel@tonic-gate 
5297c478bd9Sstevel@tonic-gate 	mblk_t		*rc_timer_mp;	/* reliable control chunk timer */
5307c478bd9Sstevel@tonic-gate 	ire_t		*ire;		/* cached IRE */
5317c478bd9Sstevel@tonic-gate 	uint32_t	T3expire;	/* # of times T3 timer expired */
5327c478bd9Sstevel@tonic-gate 
5337c478bd9Sstevel@tonic-gate 	uint64_t	hb_secret;	/* per addr "secret" in heartbeat */
53412f47623Skcpoon 	uint32_t	rxt_unacked;	/* # unack'ed retransmitted bytes */
5357c478bd9Sstevel@tonic-gate } sctp_faddr_t;
5367c478bd9Sstevel@tonic-gate 
5377c478bd9Sstevel@tonic-gate /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */
5387c478bd9Sstevel@tonic-gate #define	PARM_SUPP_V6	0x1
5397c478bd9Sstevel@tonic-gate #define	PARM_SUPP_V4	0x2
5407c478bd9Sstevel@tonic-gate 
5417c478bd9Sstevel@tonic-gate /*
5427c478bd9Sstevel@tonic-gate  * Set heartbeat interval plus jitter.  The jitter is supposed to be random,
5437c478bd9Sstevel@tonic-gate  * up to +/- 50% of the RTO.  We use gethrtime() here for  performance reason
5447c478bd9Sstevel@tonic-gate  * as the jitter does not really need to be "very" random.
5457c478bd9Sstevel@tonic-gate  */
5467c478bd9Sstevel@tonic-gate #define	SET_HB_INTVL(fp)					\
5477c478bd9Sstevel@tonic-gate 	((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) -	\
548c31292eeSkcpoon 	(uint_t)gethrtime() % (fp)->rto)
5497c478bd9Sstevel@tonic-gate 
5507c478bd9Sstevel@tonic-gate #define	SCTP_IPIF_HASH	16
5517c478bd9Sstevel@tonic-gate 
5527c478bd9Sstevel@tonic-gate typedef	struct	sctp_ipif_hash_s {
5537c478bd9Sstevel@tonic-gate 	list_t	sctp_ipif_list;
5547c478bd9Sstevel@tonic-gate 	int	ipif_count;
5557c478bd9Sstevel@tonic-gate } sctp_ipif_hash_t;
5567c478bd9Sstevel@tonic-gate 
55712f47623Skcpoon 
55812f47623Skcpoon /*
55912f47623Skcpoon  * Initialize cwnd according to RFC 3390.  def_max_init_cwnd is
56012f47623Skcpoon  * either sctp_slow_start_initial or sctp_slow_start_after idle
56112f47623Skcpoon  * depending on the caller.
56212f47623Skcpoon  */
56312f47623Skcpoon #define	SET_CWND(fp, mss, def_max_init_cwnd)				\
56412f47623Skcpoon {									\
56512f47623Skcpoon 	(fp)->cwnd = MIN(def_max_init_cwnd * (mss),			\
56612f47623Skcpoon 	    MIN(4 * (mss), MAX(2 * (mss), 4380 / (mss) * (mss))));	\
56712f47623Skcpoon }
56812f47623Skcpoon 
56912f47623Skcpoon 
5707c478bd9Sstevel@tonic-gate struct sctp_s;
5717c478bd9Sstevel@tonic-gate 
5727c478bd9Sstevel@tonic-gate /*
5737c478bd9Sstevel@tonic-gate  * Control structure for each open SCTP stream,
5747c478bd9Sstevel@tonic-gate  * defined only within the kernel or for a kmem user.
5757c478bd9Sstevel@tonic-gate  * NOTE: sctp_reinit_values MUST have a line for each field in this structure!
5767c478bd9Sstevel@tonic-gate  */
5777c478bd9Sstevel@tonic-gate #if (defined(_KERNEL) || defined(_KMEMUSER))
5787c478bd9Sstevel@tonic-gate 
5797c478bd9Sstevel@tonic-gate typedef struct sctp_s {
5807c478bd9Sstevel@tonic-gate 
5817c478bd9Sstevel@tonic-gate 	/*
5827c478bd9Sstevel@tonic-gate 	 * The following is shared with (and duplicated) in IP, so if you
5837c478bd9Sstevel@tonic-gate 	 * make changes, make sure you also change things in ip_sctp.c.
5847c478bd9Sstevel@tonic-gate 	 */
5857c478bd9Sstevel@tonic-gate 	struct sctp_s	*sctp_conn_hash_next;
5867c478bd9Sstevel@tonic-gate 	struct sctp_s	*sctp_conn_hash_prev;
5877c478bd9Sstevel@tonic-gate 
5887c478bd9Sstevel@tonic-gate 	struct sctp_s	*sctp_listen_hash_next;
5897c478bd9Sstevel@tonic-gate 	struct sctp_s	*sctp_listen_hash_prev;
5907c478bd9Sstevel@tonic-gate 
5917c478bd9Sstevel@tonic-gate 	sctp_tf_t	*sctp_listen_tfp;	/* Ptr to tf */
5927c478bd9Sstevel@tonic-gate 	sctp_tf_t	*sctp_conn_tfp;		/* Ptr to tf */
5937c478bd9Sstevel@tonic-gate 
5947c478bd9Sstevel@tonic-gate 	/* Global list of sctp */
5957c478bd9Sstevel@tonic-gate 	list_node_t	sctp_list;
5967c478bd9Sstevel@tonic-gate 
5977c478bd9Sstevel@tonic-gate 	sctp_faddr_t		*sctp_faddrs;
5981d8c4025Svi 	int			sctp_nfaddrs;
5997c478bd9Sstevel@tonic-gate 	sctp_ipif_hash_t	sctp_saddrs[SCTP_IPIF_HASH];
6007c478bd9Sstevel@tonic-gate 	int			sctp_nsaddrs;
6017c478bd9Sstevel@tonic-gate 
6027c478bd9Sstevel@tonic-gate 	/*
6037c478bd9Sstevel@tonic-gate 	 * These fields contain the same information as sctp_sctph->th_*port.
6047c478bd9Sstevel@tonic-gate 	 * However, the lookup functions can not use the header fields
6057c478bd9Sstevel@tonic-gate 	 * since during IP option manipulation the sctp_sctph pointer
6067c478bd9Sstevel@tonic-gate 	 * changes.
6077c478bd9Sstevel@tonic-gate 	 */
6087c478bd9Sstevel@tonic-gate 	union {
6097c478bd9Sstevel@tonic-gate 		struct {
6107c478bd9Sstevel@tonic-gate 			in_port_t	sctpu_fport;	/* Remote port */
6117c478bd9Sstevel@tonic-gate 			in_port_t	sctpu_lport;	/* Local port */
6127c478bd9Sstevel@tonic-gate 		} sctpu_ports1;
6137c478bd9Sstevel@tonic-gate 		uint32_t		sctpu_ports2;	/* Rem port, */
6147c478bd9Sstevel@tonic-gate 							/* local port */
6157c478bd9Sstevel@tonic-gate 					/* Used for SCTP_MATCH performance */
6167c478bd9Sstevel@tonic-gate 	} sctp_sctpu;
6177c478bd9Sstevel@tonic-gate #define	sctp_fport	sctp_sctpu.sctpu_ports1.sctpu_fport
6187c478bd9Sstevel@tonic-gate #define	sctp_lport	sctp_sctpu.sctpu_ports1.sctpu_lport
6197c478bd9Sstevel@tonic-gate #define	sctp_ports	sctp_sctpu.sctpu_ports2
6207c478bd9Sstevel@tonic-gate 
6217c478bd9Sstevel@tonic-gate 	kmutex_t	sctp_lock;
6227c478bd9Sstevel@tonic-gate 	kcondvar_t	sctp_cv;
6237c478bd9Sstevel@tonic-gate 	boolean_t	sctp_running;
6247c478bd9Sstevel@tonic-gate 
6250f1702c5SYu Xiangning #define	sctp_ulpd	sctp_connp->conn_upper_handle
6260f1702c5SYu Xiangning #define	sctp_upcalls	sctp_connp->conn_upcalls
6277c478bd9Sstevel@tonic-gate 
6280f1702c5SYu Xiangning #define	sctp_ulp_newconn	sctp_upcalls->su_newconn
6290f1702c5SYu Xiangning #define	sctp_ulp_connected	sctp_upcalls->su_connected
6300f1702c5SYu Xiangning #define	sctp_ulp_disconnected	sctp_upcalls->su_disconnected
6310f1702c5SYu Xiangning #define	sctp_ulp_opctl		sctp_upcalls->su_opctl
6320f1702c5SYu Xiangning #define	sctp_ulp_recv		sctp_upcalls->su_recv
6330f1702c5SYu Xiangning #define	sctp_ulp_xmitted	sctp_upcalls->su_txq_full
6340f1702c5SYu Xiangning #define	sctp_ulp_prop		sctp_upcalls->su_set_proto_props
6357c478bd9Sstevel@tonic-gate 
6367c478bd9Sstevel@tonic-gate 	int32_t		sctp_state;
6377c478bd9Sstevel@tonic-gate 
6387c478bd9Sstevel@tonic-gate 	conn_t		*sctp_connp;		/* conn_t stuff */
6397c478bd9Sstevel@tonic-gate #define	sctp_zoneid	sctp_connp->conn_zoneid
6405d0bc3edSsommerfe #define	sctp_allzones	sctp_connp->conn_allzones
6415d0bc3edSsommerfe #define	sctp_mac_exempt	sctp_connp->conn_mac_exempt
6427c478bd9Sstevel@tonic-gate #define	sctp_credp	sctp_connp->conn_cred
6435d0bc3edSsommerfe #define	sctp_reuseaddr	sctp_connp->conn_reuseaddr
6447c478bd9Sstevel@tonic-gate 
645f4b3ec61Sdh 	sctp_stack_t	*sctp_sctps;
646f4b3ec61Sdh 
6477c478bd9Sstevel@tonic-gate 	/* Peer address tracking */
6487c478bd9Sstevel@tonic-gate 	sctp_faddr_t	*sctp_lastfaddr;	/* last faddr in list */
6497c478bd9Sstevel@tonic-gate 	sctp_faddr_t	*sctp_primary;		/* primary faddr */
6507c478bd9Sstevel@tonic-gate 	sctp_faddr_t	*sctp_current;		/* current faddr */
6517c478bd9Sstevel@tonic-gate 	sctp_faddr_t	*sctp_lastdata;		/* last data seen from this */
6527c478bd9Sstevel@tonic-gate 
6537c478bd9Sstevel@tonic-gate 	/* Outbound data tracking */
6547c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_xmit_head;
6557c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_xmit_tail;
6567c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_xmit_unsent;
6577c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_xmit_unsent_tail;
6587c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_xmit_unacked;
6597c478bd9Sstevel@tonic-gate 
6607c478bd9Sstevel@tonic-gate 	int32_t		sctp_unacked;		/* # of unacked bytes */
6617c478bd9Sstevel@tonic-gate 	int32_t		sctp_unsent;		/* # of unsent bytes in hand */
6627c478bd9Sstevel@tonic-gate 
6637c478bd9Sstevel@tonic-gate 	uint32_t	sctp_ltsn;		/* Local instance TSN */
6647c478bd9Sstevel@tonic-gate 	uint32_t	sctp_lastack_rxd;	/* Last rx'd cumtsn */
6657c478bd9Sstevel@tonic-gate 	uint32_t	sctp_recovery_tsn;	/* Exit from fast recovery */
6667c478bd9Sstevel@tonic-gate 	uint32_t	sctp_adv_pap;		/* Adv. Peer Ack Point */
6677c478bd9Sstevel@tonic-gate 
6687c478bd9Sstevel@tonic-gate 	uint16_t	sctp_num_ostr;
6697c478bd9Sstevel@tonic-gate 	uint16_t	*sctp_ostrcntrs;
6707c478bd9Sstevel@tonic-gate 
671121e5416Skcpoon 	mblk_t		*sctp_pad_mp;		/* pad unaligned data chunks */
672121e5416Skcpoon 
6737c478bd9Sstevel@tonic-gate 	/* sendmsg() default parameters */
6747c478bd9Sstevel@tonic-gate 	uint16_t	sctp_def_stream;	/* default stream id */
6757c478bd9Sstevel@tonic-gate 	uint16_t	sctp_def_flags;		/* default xmit flags */
6767c478bd9Sstevel@tonic-gate 	uint32_t	sctp_def_ppid;		/* default payload id */
6777c478bd9Sstevel@tonic-gate 	uint32_t	sctp_def_context;	/* default context */
6787c478bd9Sstevel@tonic-gate 	uint32_t	sctp_def_timetolive;	/* default msg TTL */
6797c478bd9Sstevel@tonic-gate 
6807c478bd9Sstevel@tonic-gate 	/* Inbound data tracking */
6817c478bd9Sstevel@tonic-gate 	sctp_set_t	*sctp_sack_info;	/* Sack tracking */
6827c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_ack_mp;		/* Delayed ACK timer block */
6837c478bd9Sstevel@tonic-gate 	sctp_instr_t	*sctp_instr;		/* Instream trackers */
6847c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_uo_frags;		/* Un-ordered msg. fragments */
6857c478bd9Sstevel@tonic-gate 	uint32_t	sctp_ftsn;		/* Peer's TSN */
6867c478bd9Sstevel@tonic-gate 	uint32_t	sctp_lastacked;		/* last cumtsn SACKd */
6877c478bd9Sstevel@tonic-gate 	uint16_t	sctp_num_istr;		/* No. of instreams */
6887c478bd9Sstevel@tonic-gate 	int32_t		sctp_istr_nmsgs;	/* No. of chunks in instreams */
6897c478bd9Sstevel@tonic-gate 	int32_t		sctp_sack_gaps;		/* No. of received gaps */
6907c478bd9Sstevel@tonic-gate 	int32_t		sctp_sack_toggle;	/* SACK every other pkt */
6917c478bd9Sstevel@tonic-gate 
6927c478bd9Sstevel@tonic-gate 	/* RTT calculation */
6937c478bd9Sstevel@tonic-gate 	uint32_t	sctp_rtt_tsn;
6947c478bd9Sstevel@tonic-gate 	int64_t		sctp_out_time;
6957c478bd9Sstevel@tonic-gate 
6967c478bd9Sstevel@tonic-gate 	/* Stats */
6977c478bd9Sstevel@tonic-gate 	uint64_t	sctp_opkts;		/* sent pkts */
6987c478bd9Sstevel@tonic-gate 	uint64_t	sctp_obchunks;		/* sent control chunks */
6997c478bd9Sstevel@tonic-gate 	uint64_t	sctp_odchunks;		/* sent ordered data chunks */
7007c478bd9Sstevel@tonic-gate 	uint64_t	sctp_oudchunks;		/* sent unord data chunks */
7017c478bd9Sstevel@tonic-gate 	uint64_t	sctp_rxtchunks;		/* retransmitted chunks */
7027c478bd9Sstevel@tonic-gate 	uint64_t	sctp_ipkts;		/* recv pkts */
7037c478bd9Sstevel@tonic-gate 	uint64_t	sctp_ibchunks;		/* recv control chunks */
7047c478bd9Sstevel@tonic-gate 	uint64_t	sctp_idchunks;		/* recv ordered data chunks */
7057c478bd9Sstevel@tonic-gate 	uint64_t	sctp_iudchunks;		/* recv unord data chunks */
7067c478bd9Sstevel@tonic-gate 	uint64_t	sctp_fragdmsgs;
7077c478bd9Sstevel@tonic-gate 	uint64_t	sctp_reassmsgs;
7087c478bd9Sstevel@tonic-gate 	uint32_t	sctp_T1expire;		/* # of times T1timer expired */
7097c478bd9Sstevel@tonic-gate 	uint32_t	sctp_T2expire;		/* # of times T2timer expired */
7107c478bd9Sstevel@tonic-gate 	uint32_t	sctp_T3expire;		/* # of times T3timer expired */
7117c478bd9Sstevel@tonic-gate 	uint32_t	sctp_assoc_start_time;	/* time when assoc was est. */
7127c478bd9Sstevel@tonic-gate 
7137c478bd9Sstevel@tonic-gate 	/* Outbound flow control */
7147c478bd9Sstevel@tonic-gate 	int32_t		sctp_xmit_hiwater;	/* Send high water mark */
7157c478bd9Sstevel@tonic-gate 	int32_t		sctp_xmit_lowater;	/* Send low water mark */
7167c478bd9Sstevel@tonic-gate 	uint32_t	sctp_frwnd;		/* Peer RWND */
7177c478bd9Sstevel@tonic-gate 	uint32_t	sctp_cwnd_max;
7187c478bd9Sstevel@tonic-gate 
7197c478bd9Sstevel@tonic-gate 	/* Inbound flow control */
7207c478bd9Sstevel@tonic-gate 	int32_t		sctp_rwnd;		/* Current receive window */
7211d8c4025Svi 	int32_t		sctp_irwnd;		/* Initial receive window */
7227c478bd9Sstevel@tonic-gate 	int32_t		sctp_rxqueued;		/* No. of bytes in RX q's */
7237c478bd9Sstevel@tonic-gate 
7247c478bd9Sstevel@tonic-gate 	/* Pre-initialized composite headers */
7257c478bd9Sstevel@tonic-gate 	char		*sctp_iphc;	/* v4 sctp/ip hdr template buffer */
7267c478bd9Sstevel@tonic-gate 	char		*sctp_iphc6;	/* v6 sctp/ip hdr template buffer */
7277c478bd9Sstevel@tonic-gate 
7287c478bd9Sstevel@tonic-gate 	int32_t		sctp_iphc_len;	/* actual allocated v4 buffer size */
7297c478bd9Sstevel@tonic-gate 	int32_t		sctp_iphc6_len;	/* actual allocated v6 buffer size */
7307c478bd9Sstevel@tonic-gate 
7317c478bd9Sstevel@tonic-gate 	int32_t		sctp_hdr_len;	/* len of combined SCTP/IP v4 hdr */
7327c478bd9Sstevel@tonic-gate 	int32_t		sctp_hdr6_len;	/* len of combined SCTP/IP v6 hdr */
7337c478bd9Sstevel@tonic-gate 
7347c478bd9Sstevel@tonic-gate 	ipha_t		*sctp_ipha;	/* IPv4 header in the buffer */
7357c478bd9Sstevel@tonic-gate 	ip6_t		*sctp_ip6h;	/* IPv6 header in the buffer */
7367c478bd9Sstevel@tonic-gate 
7377c478bd9Sstevel@tonic-gate 	int32_t		sctp_ip_hdr_len; /* Byte len of our current v4 hdr */
7387c478bd9Sstevel@tonic-gate 	int32_t		sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */
7397c478bd9Sstevel@tonic-gate 
7407c478bd9Sstevel@tonic-gate 	sctp_hdr_t	*sctp_sctph;	/* sctp header in combined v4 hdr */
7417c478bd9Sstevel@tonic-gate 	sctp_hdr_t	*sctp_sctph6;	/* sctp header in combined v6 hdr */
7427c478bd9Sstevel@tonic-gate 
7437c478bd9Sstevel@tonic-gate 	uint32_t	sctp_lvtag;	/* local SCTP instance verf tag */
7447c478bd9Sstevel@tonic-gate 	uint32_t	sctp_fvtag;	/* Peer's SCTP verf tag */
7457c478bd9Sstevel@tonic-gate 
7467c478bd9Sstevel@tonic-gate 	/* Path MTU Discovery */
7477c478bd9Sstevel@tonic-gate 	int64_t		sctp_last_mtu_probe;
7487c478bd9Sstevel@tonic-gate 	clock_t		sctp_mtu_probe_intvl;
7497c478bd9Sstevel@tonic-gate 	uint32_t	sctp_mss;	/* Max send size (not TCP MSS!) */
7507c478bd9Sstevel@tonic-gate 
7517c478bd9Sstevel@tonic-gate 	/* structs sctp_bits, sctp_events are for clearing all bits at once */
7527c478bd9Sstevel@tonic-gate 	struct {
7537c478bd9Sstevel@tonic-gate 		uint32_t
7547c478bd9Sstevel@tonic-gate 
7557c478bd9Sstevel@tonic-gate 		sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */
7567c478bd9Sstevel@tonic-gate 		sctp_debug : 1,		/* SO_DEBUG "socket" option. */
7577c478bd9Sstevel@tonic-gate 		sctp_cchunk_pend : 1,	/* Control chunk in flight. */
7587c478bd9Sstevel@tonic-gate 		sctp_dgram_errind : 1,	/* SO_DGRAM_ERRIND option */
7597c478bd9Sstevel@tonic-gate 
7607c478bd9Sstevel@tonic-gate 		sctp_linger : 1,	/* SO_LINGER turned on */
7617c478bd9Sstevel@tonic-gate 		sctp_lingering : 1,	/* Lingering in close */
7627c478bd9Sstevel@tonic-gate 		sctp_loopback: 1,	/* src and dst are the same machine */
7637c478bd9Sstevel@tonic-gate 		sctp_force_sack : 1,
7647c478bd9Sstevel@tonic-gate 
7657c478bd9Sstevel@tonic-gate 		sctp_ack_timer_running: 1,	/* Delayed ACK timer running */
7667c478bd9Sstevel@tonic-gate 		sctp_recvdstaddr : 1,	/* return T_EXTCONN_IND with dstaddr */
7677c478bd9Sstevel@tonic-gate 		sctp_hwcksum : 1,	/* The NIC is capable of hwcksum */
7687c478bd9Sstevel@tonic-gate 		sctp_understands_addip : 1,
7697c478bd9Sstevel@tonic-gate 
7707c478bd9Sstevel@tonic-gate 		sctp_bound_to_all : 1,
7717c478bd9Sstevel@tonic-gate 		sctp_cansleep : 1,	/* itf routines can sleep */
7727c478bd9Sstevel@tonic-gate 		sctp_detached : 1,	/* If we're detached from a stream */
773558fbd03Skcpoon 		sctp_send_adaptation : 1,	/* send adaptation layer ind */
7747c478bd9Sstevel@tonic-gate 
775558fbd03Skcpoon 		sctp_recv_adaptation : 1,	/* recv adaptation layer ind */
7767c478bd9Sstevel@tonic-gate 		sctp_ndelay : 1,	/* turn off Nagle */
7777c478bd9Sstevel@tonic-gate 		sctp_condemned : 1,	/* this sctp is about to disappear */
7787c478bd9Sstevel@tonic-gate 		sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */
779f551bb10Svi 
780f551bb10Svi 		sctp_prsctp_aware : 1,	/* is peer PR-SCTP aware? */
78145916cd2Sjpk 		sctp_linklocal : 1,	/* is linklocal assoc. */
78277c67f2fSkcpoon 		sctp_rexmitting : 1,	/* SCTP is retransmitting */
783769b977dSvi 		sctp_zero_win_probe : 1,	/* doing zero win probe */
78477c67f2fSkcpoon 
7850f1702c5SYu Xiangning 		sctp_txq_full : 1,	/* the tx queue is full */
786c31292eeSkcpoon 		sctp_ulp_discon_done : 1,	/* ulp_disconnecting done */
7870f1702c5SYu Xiangning 		sctp_dummy : 6;
7887c478bd9Sstevel@tonic-gate 	} sctp_bits;
7897c478bd9Sstevel@tonic-gate 	struct {
7907c478bd9Sstevel@tonic-gate 		uint32_t
7917c478bd9Sstevel@tonic-gate 
7927c478bd9Sstevel@tonic-gate 		sctp_recvsndrcvinfo : 1,
7937c478bd9Sstevel@tonic-gate 		sctp_recvassocevnt : 1,
7947c478bd9Sstevel@tonic-gate 		sctp_recvpathevnt : 1,
7957c478bd9Sstevel@tonic-gate 		sctp_recvsendfailevnt : 1,
7967c478bd9Sstevel@tonic-gate 
7977c478bd9Sstevel@tonic-gate 		sctp_recvpeererr : 1,
7987c478bd9Sstevel@tonic-gate 		sctp_recvshutdownevnt : 1,
7997c478bd9Sstevel@tonic-gate 		sctp_recvpdevnt : 1,
8007c478bd9Sstevel@tonic-gate 		sctp_recvalevnt : 1;
8017c478bd9Sstevel@tonic-gate 	} sctp_events;
8027c478bd9Sstevel@tonic-gate #define	sctp_priv_stream sctp_bits.sctp_priv_stream
8037c478bd9Sstevel@tonic-gate #define	sctp_understands_asconf sctp_bits.sctp_understands_asconf
8047c478bd9Sstevel@tonic-gate #define	sctp_debug sctp_bits.sctp_debug
8057c478bd9Sstevel@tonic-gate #define	sctp_cchunk_pend sctp_bits.sctp_cchunk_pend
8067c478bd9Sstevel@tonic-gate #define	sctp_dgram_errind sctp_bits.sctp_dgram_errind
8077c478bd9Sstevel@tonic-gate #define	sctp_linger sctp_bits.sctp_linger
8087c478bd9Sstevel@tonic-gate #define	sctp_lingering sctp_bits.sctp_lingering
8097c478bd9Sstevel@tonic-gate #define	sctp_loopback sctp_bits.sctp_loopback
8107c478bd9Sstevel@tonic-gate #define	sctp_force_sack sctp_bits.sctp_force_sack
8117c478bd9Sstevel@tonic-gate #define	sctp_ack_timer_running sctp_bits.sctp_ack_timer_running
8127c478bd9Sstevel@tonic-gate #define	sctp_recvdstaddr sctp_bits.sctp_recvdstaddr
8137c478bd9Sstevel@tonic-gate #define	sctp_hwcksum sctp_bits.sctp_hwcksum
8147c478bd9Sstevel@tonic-gate #define	sctp_understands_addip sctp_bits.sctp_understands_addip
8157c478bd9Sstevel@tonic-gate #define	sctp_bound_to_all sctp_bits.sctp_bound_to_all
8167c478bd9Sstevel@tonic-gate #define	sctp_cansleep sctp_bits.sctp_cansleep
8177c478bd9Sstevel@tonic-gate #define	sctp_detached sctp_bits.sctp_detached
818558fbd03Skcpoon #define	sctp_send_adaptation sctp_bits.sctp_send_adaptation
819558fbd03Skcpoon #define	sctp_recv_adaptation sctp_bits.sctp_recv_adaptation
8207c478bd9Sstevel@tonic-gate #define	sctp_ndelay sctp_bits.sctp_ndelay
8217c478bd9Sstevel@tonic-gate #define	sctp_condemned sctp_bits.sctp_condemned
8227c478bd9Sstevel@tonic-gate #define	sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit
8237c478bd9Sstevel@tonic-gate #define	sctp_prsctp_aware sctp_bits.sctp_prsctp_aware
824f551bb10Svi #define	sctp_linklocal sctp_bits.sctp_linklocal
82577c67f2fSkcpoon #define	sctp_rexmitting sctp_bits.sctp_rexmitting
826769b977dSvi #define	sctp_zero_win_probe sctp_bits.sctp_zero_win_probe
8270f1702c5SYu Xiangning #define	sctp_txq_full sctp_bits.sctp_txq_full
828c31292eeSkcpoon #define	sctp_ulp_discon_done sctp_bits.sctp_ulp_discon_done
8297c478bd9Sstevel@tonic-gate 
8307c478bd9Sstevel@tonic-gate #define	sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo
8317c478bd9Sstevel@tonic-gate #define	sctp_recvassocevnt sctp_events.sctp_recvassocevnt
8327c478bd9Sstevel@tonic-gate #define	sctp_recvpathevnt sctp_events.sctp_recvpathevnt
8337c478bd9Sstevel@tonic-gate #define	sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt
8347c478bd9Sstevel@tonic-gate #define	sctp_recvpeererr sctp_events.sctp_recvpeererr
8357c478bd9Sstevel@tonic-gate #define	sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt
8367c478bd9Sstevel@tonic-gate #define	sctp_recvpdevnt sctp_events.sctp_recvpdevnt
8377c478bd9Sstevel@tonic-gate #define	sctp_recvalevnt sctp_events.sctp_recvalevnt
8387c478bd9Sstevel@tonic-gate 
8397c478bd9Sstevel@tonic-gate 	/* Retransmit info */
8407c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_cookie_mp; /* cookie chunk, if rxt needed */
8417c478bd9Sstevel@tonic-gate 	int32_t		sctp_strikes;	/* Total number of assoc strikes */
8427c478bd9Sstevel@tonic-gate 	int32_t		sctp_max_init_rxt;
8437c478bd9Sstevel@tonic-gate 	int32_t		sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */
8447c478bd9Sstevel@tonic-gate 	int32_t		sctp_pp_max_rxt; /* Max per-path retransmit cnt */
8457c478bd9Sstevel@tonic-gate 	uint32_t	sctp_rto_max;
8467c478bd9Sstevel@tonic-gate 	uint32_t	sctp_init_rto_max;
8477c478bd9Sstevel@tonic-gate 	uint32_t	sctp_rto_min;
8487c478bd9Sstevel@tonic-gate 	uint32_t	sctp_rto_initial;
8497c478bd9Sstevel@tonic-gate 
8507c478bd9Sstevel@tonic-gate 	int64_t		sctp_last_secret_update;
8517c478bd9Sstevel@tonic-gate 	uint8_t		sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */
8527c478bd9Sstevel@tonic-gate 	uint8_t		sctp_old_secret[SCTP_SECRET_LEN];
85312f47623Skcpoon 	uint32_t	sctp_cookie_lifetime;	/* cookie lifetime in tick */
8547c478bd9Sstevel@tonic-gate 
8557c478bd9Sstevel@tonic-gate 	/*
8567c478bd9Sstevel@tonic-gate 	 * Address family that app wishes returned addrsses to be in.
8577c478bd9Sstevel@tonic-gate 	 * Currently taken from address family used in T_BIND_REQ, but
8587c478bd9Sstevel@tonic-gate 	 * should really come from family used in original socket() call.
8597c478bd9Sstevel@tonic-gate 	 * Value can be AF_INET or AF_INET6.
8607c478bd9Sstevel@tonic-gate 	 */
8617c478bd9Sstevel@tonic-gate 	uint_t		sctp_family;
8627c478bd9Sstevel@tonic-gate 	ushort_t	sctp_ipversion;
8637c478bd9Sstevel@tonic-gate 
8647c478bd9Sstevel@tonic-gate 	/* Bind hash tables */
8657c478bd9Sstevel@tonic-gate 	kmutex_t	*sctp_bind_lockp;	/* Ptr to tf_lock */
8667c478bd9Sstevel@tonic-gate 	struct sctp_s	*sctp_bind_hash;
8677c478bd9Sstevel@tonic-gate 	struct sctp_s **sctp_ptpbhn;
8687c478bd9Sstevel@tonic-gate 
8697c478bd9Sstevel@tonic-gate 	/* Shutdown / cleanup */
8707c478bd9Sstevel@tonic-gate 	sctp_faddr_t	*sctp_shutdown_faddr;	/* rotate faddr during shutd */
8717c478bd9Sstevel@tonic-gate 	int32_t		sctp_client_errno;	/* How the client screwed up */
8727c478bd9Sstevel@tonic-gate 	int		sctp_lingertime; /* Close linger time (in seconds) */
8737c478bd9Sstevel@tonic-gate 	kmutex_t	sctp_reflock;	/* Protects sctp_refcnt & timer mp */
8747c478bd9Sstevel@tonic-gate 	ushort_t	sctp_refcnt;	/* No. of pending upstream msg */
8757c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_timer_mp;	/* List of fired timers. */
8767c478bd9Sstevel@tonic-gate 
8777c478bd9Sstevel@tonic-gate 	/* Misc */
8787c478bd9Sstevel@tonic-gate 	uint_t		sctp_bound_if;	/* IPV6_BOUND_IF */
8797c478bd9Sstevel@tonic-gate 
8807c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_heartbeat_mp; /* Timer block for heartbeats */
8817c478bd9Sstevel@tonic-gate 	uint32_t	sctp_hb_interval; /* Default hb_interval */
8827c478bd9Sstevel@tonic-gate 
8837c478bd9Sstevel@tonic-gate 	int32_t		sctp_autoclose;	/* Auto disconnect in ticks */
8847c478bd9Sstevel@tonic-gate 	int64_t		sctp_active;	/* Last time data/sack on this conn */
885558fbd03Skcpoon 	uint32_t	sctp_tx_adaptation_code; /* TX adaptation code */
886558fbd03Skcpoon 	uint32_t	sctp_rx_adaptation_code; /* RX adaptation code */
8877c478bd9Sstevel@tonic-gate 
8887c478bd9Sstevel@tonic-gate 	/* Reliable control chunks */
8897c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_cxmit_list; /* Xmit list for control chunks */
8907c478bd9Sstevel@tonic-gate 	uint32_t	sctp_lcsn;	/* Our serial number */
8917c478bd9Sstevel@tonic-gate 	uint32_t	sctp_fcsn;	/* Peer serial number */
8927c478bd9Sstevel@tonic-gate 
8937c478bd9Sstevel@tonic-gate 	/* Per association receive queue */
8947c478bd9Sstevel@tonic-gate 	kmutex_t	sctp_recvq_lock;
8957c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_recvq;
8967c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_recvq_tail;
8977c478bd9Sstevel@tonic-gate 	taskq_t		*sctp_recvq_tq;
8987c478bd9Sstevel@tonic-gate 
8997c478bd9Sstevel@tonic-gate 	/* Send queue to IP */
9007c478bd9Sstevel@tonic-gate 	kmutex_t	sctp_sendq_lock;
9017c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_sendq;
9027c478bd9Sstevel@tonic-gate 	mblk_t		*sctp_sendq_tail;
9037c478bd9Sstevel@tonic-gate 	boolean_t	sctp_sendq_sending;
9047c478bd9Sstevel@tonic-gate 
9057c478bd9Sstevel@tonic-gate 	/* IPv6 ancillary data */
9067c478bd9Sstevel@tonic-gate 	uint_t		sctp_ipv6_recvancillary;	/* flags */
9077c478bd9Sstevel@tonic-gate #define	SCTP_IPV6_RECVPKTINFO	0x01		/* IPV6_RECVPKTINFO opt */
9087c478bd9Sstevel@tonic-gate #define	SCTP_IPV6_RECVHOPLIMIT	0x02		/* IPV6_RECVHOPLIMIT opt */
9097c478bd9Sstevel@tonic-gate #define	SCTP_IPV6_RECVHOPOPTS	0x04		/* IPV6_RECVHOPOPTS opt */
9107c478bd9Sstevel@tonic-gate #define	SCTP_IPV6_RECVDSTOPTS	0x08		/* IPV6_RECVDSTOPTS opt */
9117c478bd9Sstevel@tonic-gate #define	SCTP_IPV6_RECVRTHDR	0x10		/* IPV6_RECVRTHDR opt */
9127c478bd9Sstevel@tonic-gate #define	SCTP_IPV6_RECVRTDSTOPTS	0x20		/* IPV6_RECVRTHDRDSTOPTS opt */
9137c478bd9Sstevel@tonic-gate 
9147c478bd9Sstevel@tonic-gate 	uint_t		sctp_recvifindex;	/* last rcvd IPV6_RCVPKTINFO */
9157c478bd9Sstevel@tonic-gate 	uint_t		sctp_recvhops;		/*  " IPV6_RECVHOPLIMIT */
9167c478bd9Sstevel@tonic-gate 	ip6_hbh_t	*sctp_hopopts;		/*  " IPV6_RECVHOPOPTS */
9177c478bd9Sstevel@tonic-gate 	ip6_dest_t	*sctp_dstopts;		/*  " IPV6_RECVDSTOPTS */
9187c478bd9Sstevel@tonic-gate 	ip6_dest_t	*sctp_rtdstopts;	/*  " IPV6_RECVRTHDRDSTOPTS */
9197c478bd9Sstevel@tonic-gate 	ip6_rthdr_t	*sctp_rthdr;		/*  " IPV6_RECVRTHDR */
9207c478bd9Sstevel@tonic-gate 	uint_t		sctp_hopoptslen;
9217c478bd9Sstevel@tonic-gate 	uint_t		sctp_dstoptslen;
9227c478bd9Sstevel@tonic-gate 	uint_t		sctp_rtdstoptslen;
9237c478bd9Sstevel@tonic-gate 	uint_t		sctp_rthdrlen;
9247c478bd9Sstevel@tonic-gate 
9257c478bd9Sstevel@tonic-gate 	ip6_pkt_t	sctp_sticky_ipp;	/* Sticky options */
9267c478bd9Sstevel@tonic-gate #define	sctp_ipp_fields		sctp_sticky_ipp.ipp_fields
9277c478bd9Sstevel@tonic-gate #define	sctp_ipp_ifindex	sctp_sticky_ipp.ipp_ifindex
9287c478bd9Sstevel@tonic-gate #define	sctp_ipp_addr		sctp_sticky_ipp.ipp_addr
9297c478bd9Sstevel@tonic-gate #define	sctp_ipp_hoplimit	sctp_sticky_ipp.ipp_hoplimit
9307c478bd9Sstevel@tonic-gate #define	sctp_ipp_hopoptslen	sctp_sticky_ipp.ipp_hopoptslen
9317c478bd9Sstevel@tonic-gate #define	sctp_ipp_rtdstoptslen	sctp_sticky_ipp.ipp_rtdstoptslen
9327c478bd9Sstevel@tonic-gate #define	sctp_ipp_rthdrlen	sctp_sticky_ipp.ipp_rthdrlen
9337c478bd9Sstevel@tonic-gate #define	sctp_ipp_dstoptslen	sctp_sticky_ipp.ipp_dstoptslen
9347c478bd9Sstevel@tonic-gate #define	sctp_ipp_hopopts	sctp_sticky_ipp.ipp_hopopts
9357c478bd9Sstevel@tonic-gate #define	sctp_ipp_rtdstopts	sctp_sticky_ipp.ipp_rtdstopts
9367c478bd9Sstevel@tonic-gate #define	sctp_ipp_rthdr		sctp_sticky_ipp.ipp_rthdr
9377c478bd9Sstevel@tonic-gate #define	sctp_ipp_dstopts	sctp_sticky_ipp.ipp_dstopts
9387f99e6fcSkp #define	sctp_ipp_pathmtu	sctp_sticky_ipp.ipp_pathmtu
9397c478bd9Sstevel@tonic-gate #define	sctp_ipp_nexthop	sctp_sticky_ipp.ipp_nexthop
9407c478bd9Sstevel@tonic-gate 	/* Stats */
9417c478bd9Sstevel@tonic-gate 	uint64_t	sctp_msgcount;
9427c478bd9Sstevel@tonic-gate 	uint64_t	sctp_prsctpdrop;
94345916cd2Sjpk 
94445916cd2Sjpk 	uint_t		sctp_v4label_len;	/* length of cached v4 label */
94545916cd2Sjpk 	uint_t		sctp_v6label_len;	/* length of cached v6 label */
94677c67f2fSkcpoon 	uint32_t	sctp_rxt_nxttsn;	/* Next TSN to be rexmitted */
94777c67f2fSkcpoon 	uint32_t	sctp_rxt_maxtsn;	/* Max TSN sent at time out */
9487d546a59Svi 
9497d546a59Svi 	int		sctp_pd_point;		/* Partial delivery point */
9507f093707Skcpoon 	mblk_t		*sctp_err_chunks;	/* Error chunks */
9517f093707Skcpoon 	uint32_t	sctp_err_len;		/* Total error chunks length */
952de8c4a14SErik Nordmark 
953de8c4a14SErik Nordmark 	pid_t		sctp_cpid;	/* Process id when this was opened */
954de8c4a14SErik Nordmark 	uint64_t	sctp_open_time;	/* time when this was opened */
955*9f13099eSGeorge Shepherd 
956*9f13099eSGeorge Shepherd 	/* additional source data for per endpoint association statistics */
957*9f13099eSGeorge Shepherd 	uint64_t	sctp_outseqtsns;	/* TSN rx > expected TSN */
958*9f13099eSGeorge Shepherd 	uint64_t	sctp_osacks;		/* total sacks sent */
959*9f13099eSGeorge Shepherd 	uint64_t	sctp_isacks;		/* total sacks received */
960*9f13099eSGeorge Shepherd 	uint64_t	sctp_idupchunks;	/* rx dups, ord or unord */
961*9f13099eSGeorge Shepherd 	uint64_t	sctp_gapcnt;		/* total gap acks rx */
962*9f13099eSGeorge Shepherd 
963*9f13099eSGeorge Shepherd 	/*
964*9f13099eSGeorge Shepherd 	 * When non-zero, this is the maximum observed RTO since assoc stats
965*9f13099eSGeorge Shepherd 	 * were last requested. When zero, no RTO update has occurred since
966*9f13099eSGeorge Shepherd 	 * the previous user request for stats on this endpoint.
967*9f13099eSGeorge Shepherd 	 */
968*9f13099eSGeorge Shepherd 	int	sctp_maxrto;
969*9f13099eSGeorge Shepherd 	/*
970*9f13099eSGeorge Shepherd 	 * The stored value of sctp_maxrto passed to user during the previous
971*9f13099eSGeorge Shepherd 	 * user request for stats on this endpoint.
972*9f13099eSGeorge Shepherd 	 */
973*9f13099eSGeorge Shepherd 	int	sctp_prev_maxrto;
9747c478bd9Sstevel@tonic-gate } sctp_t;
9757c478bd9Sstevel@tonic-gate 
9760f1702c5SYu Xiangning #define	SCTP_TXQ_LEN(sctp)	((sctp)->sctp_unsent + (sctp)->sctp_unacked)
9770f1702c5SYu Xiangning #define	SCTP_TXQ_UPDATE(sctp)					\
9780f1702c5SYu Xiangning 	if ((sctp)->sctp_txq_full && SCTP_TXQ_LEN(sctp) <=	\
9790f1702c5SYu Xiangning 	    (sctp)->sctp_xmit_lowater) {			\
9800f1702c5SYu Xiangning 		(sctp)->sctp_txq_full = 0;			\
9810f1702c5SYu Xiangning 		(sctp)->sctp_ulp_xmitted((sctp)->sctp_ulpd,	\
9820f1702c5SYu Xiangning 		    B_FALSE);					\
9830f1702c5SYu Xiangning 	}
9840f1702c5SYu Xiangning 
9857c478bd9Sstevel@tonic-gate #endif	/* (defined(_KERNEL) || defined(_KMEMUSER)) */
9867c478bd9Sstevel@tonic-gate 
9877c478bd9Sstevel@tonic-gate extern void	sctp_ack_timer(sctp_t *);
988558fbd03Skcpoon extern size_t	sctp_adaptation_code_param(sctp_t *, uchar_t *);
989558fbd03Skcpoon extern void	sctp_adaptation_event(sctp_t *);
9907f093707Skcpoon extern void	sctp_add_err(sctp_t *, uint16_t, void *, size_t,
9917f093707Skcpoon 		    sctp_faddr_t *);
99277c67f2fSkcpoon extern int	sctp_add_faddr(sctp_t *, in6_addr_t *, int, boolean_t);
9937c478bd9Sstevel@tonic-gate extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *,
9947c478bd9Sstevel@tonic-gate 		    uint_t *, uint32_t *);
9957c478bd9Sstevel@tonic-gate extern boolean_t sctp_add_recvq(sctp_t *, mblk_t *, boolean_t);
9967c478bd9Sstevel@tonic-gate extern void	sctp_add_sendq(sctp_t *, mblk_t *);
997c513743fSGeorge Shepherd extern void	sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **, boolean_t);
99812f47623Skcpoon extern size_t	sctp_addr_params(sctp_t *, int, uchar_t *, boolean_t);
999df19b344Svi extern mblk_t	*sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int,
1000df19b344Svi 		    int *);
10017c478bd9Sstevel@tonic-gate extern void	sctp_addr_req(sctp_t *, mblk_t *);
10027c478bd9Sstevel@tonic-gate extern sctp_t	*sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *,
1003e35d2278Svi 		    zoneid_t, sctp_stack_t *);
10047c478bd9Sstevel@tonic-gate extern void	sctp_add_hdr(sctp_t *, uchar_t *, size_t);
10057c478bd9Sstevel@tonic-gate extern void	sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *);
10067c478bd9Sstevel@tonic-gate extern void	sctp_assoc_event(sctp_t *, uint16_t, uint16_t,
10077c478bd9Sstevel@tonic-gate 		    sctp_chunk_hdr_t *);
10087c478bd9Sstevel@tonic-gate 
10097c478bd9Sstevel@tonic-gate extern void	sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int);
10107c478bd9Sstevel@tonic-gate extern void	sctp_bind_hash_remove(sctp_t *);
101145916cd2Sjpk extern int	sctp_bindi(sctp_t *, in_port_t, boolean_t, int, in_port_t *);
10121d8c4025Svi extern int	sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t,
10131d8c4025Svi 		    in_port_t);
10147c478bd9Sstevel@tonic-gate extern int	sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t);
10157c478bd9Sstevel@tonic-gate extern int	sctp_build_hdrs(sctp_t *);
10167c478bd9Sstevel@tonic-gate 
10177c478bd9Sstevel@tonic-gate extern int	sctp_check_abandoned_msg(sctp_t *, mblk_t *);
10187c478bd9Sstevel@tonic-gate extern void	sctp_clean_death(sctp_t *, int);
10197c478bd9Sstevel@tonic-gate extern void	sctp_close_eager(sctp_t *);
10207c478bd9Sstevel@tonic-gate extern int	sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *);
10217c478bd9Sstevel@tonic-gate extern void	sctp_congest_reset(sctp_t *);
10227c478bd9Sstevel@tonic-gate extern void	sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int);
10237c478bd9Sstevel@tonic-gate extern void	sctp_conn_hash_remove(sctp_t *);
1024121e5416Skcpoon extern void	sctp_conn_init(conn_t *);
1025e35d2278Svi extern sctp_t	*sctp_conn_match(in6_addr_t *, in6_addr_t *, uint32_t,
1026f4b3ec61Sdh 		    zoneid_t, sctp_stack_t *);
10277c478bd9Sstevel@tonic-gate extern sctp_t	*sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t,
10287c478bd9Sstevel@tonic-gate 		    sctp_init_chunk_t *, mblk_t *);
10297c478bd9Sstevel@tonic-gate extern int	sctp_conprim_opt_process(queue_t *, mblk_t *, int *, int *,
10307c478bd9Sstevel@tonic-gate 		    int *);
10317c478bd9Sstevel@tonic-gate extern uint32_t	sctp_cumack(sctp_t *, uint32_t, mblk_t **);
10327c478bd9Sstevel@tonic-gate extern sctp_t	*sctp_create_eager(sctp_t *);
10337c478bd9Sstevel@tonic-gate 
10347c478bd9Sstevel@tonic-gate extern void	sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *,
10357c478bd9Sstevel@tonic-gate 		    uint_t, uint_t, in6_addr_t);
10367c478bd9Sstevel@tonic-gate extern char	*sctp_display(sctp_t *, char *);
1037f4b3ec61Sdh extern void	sctp_display_all(sctp_stack_t *);
10387c478bd9Sstevel@tonic-gate 
10397c478bd9Sstevel@tonic-gate extern void	sctp_error_event(sctp_t *, sctp_chunk_hdr_t *);
10407c478bd9Sstevel@tonic-gate 
10417c478bd9Sstevel@tonic-gate extern void	sctp_faddr_alive(sctp_t *, sctp_faddr_t *);
10427c478bd9Sstevel@tonic-gate extern int	sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int);
104345916cd2Sjpk extern void	sctp_faddr_fini(void);
104445916cd2Sjpk extern void	sctp_faddr_init(void);
10457c478bd9Sstevel@tonic-gate extern void	sctp_fast_rexmit(sctp_t *);
10467c478bd9Sstevel@tonic-gate extern void	sctp_fill_sack(sctp_t *, unsigned char *, int);
10477c478bd9Sstevel@tonic-gate extern void	sctp_free_faddr_timers(sctp_t *);
10487c478bd9Sstevel@tonic-gate extern void	sctp_free_ftsn_set(sctp_ftsn_set_t *);
10497c478bd9Sstevel@tonic-gate extern void	sctp_free_msg(mblk_t *);
10507c478bd9Sstevel@tonic-gate extern void	sctp_free_reass(sctp_instr_t *);
10517c478bd9Sstevel@tonic-gate extern void	sctp_free_set(sctp_set_t *);
10527c478bd9Sstevel@tonic-gate extern void	sctp_ftsn_sets_fini(void);
10537c478bd9Sstevel@tonic-gate extern void	sctp_ftsn_sets_init(void);
10547c478bd9Sstevel@tonic-gate 
10551d8c4025Svi extern int	sctp_get_addrlist(sctp_t *, const void *, uint32_t *,
10561d8c4025Svi 		    uchar_t **, int *, size_t *);
1057f4b3ec61Sdh extern void	sctp_g_q_inactive(sctp_stack_t *);
10587c478bd9Sstevel@tonic-gate extern int	sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *,
10597c478bd9Sstevel@tonic-gate 		    sctp_chunk_hdr_t *, uint_t *);
106077c67f2fSkcpoon extern void	sctp_get_ire(sctp_t *, sctp_faddr_t *);
10611d8c4025Svi extern void	sctp_get_faddr_list(sctp_t *, uchar_t *, size_t);
10627c478bd9Sstevel@tonic-gate extern mblk_t	*sctp_get_first_sent(sctp_t *);
10637c478bd9Sstevel@tonic-gate extern mblk_t	*sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int  *,
10647c478bd9Sstevel@tonic-gate 		    int32_t, uint32_t, sctp_faddr_t *);
10651d8c4025Svi extern void	sctp_get_saddr_list(sctp_t *, uchar_t *, size_t);
10667c478bd9Sstevel@tonic-gate 
10677c478bd9Sstevel@tonic-gate extern int	sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *,
10687c478bd9Sstevel@tonic-gate 		    mblk_t *);
1069f4b3ec61Sdh extern void	sctp_hash_destroy(sctp_stack_t *);
1070f4b3ec61Sdh extern void	sctp_hash_init(sctp_stack_t *);
10717c478bd9Sstevel@tonic-gate extern int	sctp_header_init_ipv4(sctp_t *, int);
10727c478bd9Sstevel@tonic-gate extern int	sctp_header_init_ipv6(sctp_t *, int);
10737c478bd9Sstevel@tonic-gate extern void	sctp_heartbeat_timer(sctp_t *);
10747c478bd9Sstevel@tonic-gate 
10757c478bd9Sstevel@tonic-gate extern void	sctp_icmp_error(sctp_t *, mblk_t *);
1076f4b3ec61Sdh extern void	sctp_inc_taskq(sctp_stack_t *);
10777c478bd9Sstevel@tonic-gate extern void	sctp_info_req(sctp_t *, mblk_t *);
10787c478bd9Sstevel@tonic-gate extern mblk_t	*sctp_init_mp(sctp_t *);
10797c478bd9Sstevel@tonic-gate extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *,
10807c478bd9Sstevel@tonic-gate 		    sctp_init_chunk_t *);
10817c478bd9Sstevel@tonic-gate extern uint32_t	sctp_init2vtag(sctp_chunk_hdr_t *);
10827c478bd9Sstevel@tonic-gate extern void	sctp_intf_event(sctp_t *, in6_addr_t, int, int);
10837c478bd9Sstevel@tonic-gate extern void	sctp_input_data(sctp_t *, mblk_t *, mblk_t *);
10847c478bd9Sstevel@tonic-gate extern void	sctp_instream_cleanup(sctp_t *, boolean_t);
10857c478bd9Sstevel@tonic-gate extern int	sctp_is_a_faddr_clean(sctp_t *);
10867c478bd9Sstevel@tonic-gate 
1087f4b3ec61Sdh extern void	*sctp_kstat_init(netstackid_t);
1088f4b3ec61Sdh extern void	sctp_kstat_fini(netstackid_t, kstat_t *);
1089f4b3ec61Sdh extern void	*sctp_kstat2_init(netstackid_t, sctp_kstat_t *);
1090f4b3ec61Sdh extern void	sctp_kstat2_fini(netstackid_t, kstat_t *);
10917c478bd9Sstevel@tonic-gate 
10927c478bd9Sstevel@tonic-gate extern ssize_t	sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int,
10937c478bd9Sstevel@tonic-gate 		    boolean_t);
10947c478bd9Sstevel@tonic-gate extern void	sctp_listen_hash_insert(sctp_tf_t *, sctp_t *);
10957c478bd9Sstevel@tonic-gate extern void	sctp_listen_hash_remove(sctp_t *);
10967c478bd9Sstevel@tonic-gate extern sctp_t	*sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *,
10977c478bd9Sstevel@tonic-gate 		    int);
10987c478bd9Sstevel@tonic-gate extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *);
10997c478bd9Sstevel@tonic-gate 
11007c478bd9Sstevel@tonic-gate extern mblk_t	*sctp_make_err(sctp_t *, uint16_t, void *, size_t);
11017c478bd9Sstevel@tonic-gate extern mblk_t	*sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *,
11027c478bd9Sstevel@tonic-gate 		    sctp_ftsn_set_t *, uint_t, uint32_t);
11037c478bd9Sstevel@tonic-gate extern void	sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **,
11047c478bd9Sstevel@tonic-gate 		    sctp_faddr_t *, uint32_t *);
11057c478bd9Sstevel@tonic-gate extern mblk_t	*sctp_make_mp(sctp_t *, sctp_faddr_t *, int);
11067c478bd9Sstevel@tonic-gate extern mblk_t	*sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *);
11077c478bd9Sstevel@tonic-gate extern void	sctp_maxpsz_set(sctp_t *);
11087c478bd9Sstevel@tonic-gate extern void	sctp_move_faddr_timers(queue_t *, sctp_t *);
11097c478bd9Sstevel@tonic-gate 
1110f4b3ec61Sdh extern void	sctp_nd_free(sctp_stack_t *);
11117c478bd9Sstevel@tonic-gate extern int	sctp_nd_getset(queue_t *, MBLKP);
1112f4b3ec61Sdh extern boolean_t sctp_nd_init(sctp_stack_t *);
11137c478bd9Sstevel@tonic-gate extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *);
11147c478bd9Sstevel@tonic-gate 
11157c478bd9Sstevel@tonic-gate extern void	sctp_ootb_shutdown_ack(sctp_t *, mblk_t *, uint_t);
11167c478bd9Sstevel@tonic-gate extern size_t	sctp_options_param(const sctp_t *, void *, int);
11177c478bd9Sstevel@tonic-gate extern size_t	sctp_options_param_len(const sctp_t *, int);
111812f47623Skcpoon extern void	sctp_output(sctp_t *, uint_t);
11197c478bd9Sstevel@tonic-gate 
1120f4b3ec61Sdh extern boolean_t sctp_param_register(IDP *, sctpparam_t *, int, sctp_stack_t *);
11217c478bd9Sstevel@tonic-gate extern void	sctp_partial_delivery_event(sctp_t *);
11227c478bd9Sstevel@tonic-gate extern int	sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *,
11237c478bd9Sstevel@tonic-gate 		    sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *);
11247f093707Skcpoon extern void	sctp_process_err(sctp_t *);
11257c478bd9Sstevel@tonic-gate extern void	sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *);
11267c478bd9Sstevel@tonic-gate extern void	sctp_process_sendq(sctp_t *);
11277c478bd9Sstevel@tonic-gate extern void	sctp_process_timer(sctp_t *);
11287c478bd9Sstevel@tonic-gate 
11297c478bd9Sstevel@tonic-gate extern void	sctp_redo_faddr_srcs(sctp_t *);
11307c478bd9Sstevel@tonic-gate extern void	sctp_regift_xmitlist(sctp_t *);
11317c478bd9Sstevel@tonic-gate extern void	sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *);
11327c478bd9Sstevel@tonic-gate extern void	sctp_rexmit(sctp_t *, sctp_faddr_t *);
1133769b977dSvi extern mblk_t	*sctp_rexmit_packet(sctp_t *, mblk_t **, mblk_t **,
1134769b977dSvi 		    sctp_faddr_t *, uint_t *);
11357c478bd9Sstevel@tonic-gate extern void	sctp_rexmit_timer(sctp_t *, sctp_faddr_t *);
11367c478bd9Sstevel@tonic-gate extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *);
11377c478bd9Sstevel@tonic-gate 
11387f093707Skcpoon extern boolean_t sctp_sack(sctp_t *, mblk_t *);
11397c478bd9Sstevel@tonic-gate extern int	sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *,
1140f4b3ec61Sdh 		    uint32_t, int, sctp_stack_t *);
11417c478bd9Sstevel@tonic-gate extern void	sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t,
11427c478bd9Sstevel@tonic-gate 		    mblk_t *, int, boolean_t);
11437c478bd9Sstevel@tonic-gate extern void	sctp_send_cookie_ack(sctp_t *);
11447c478bd9Sstevel@tonic-gate extern void	sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *);
1145d7ab25acSkp extern void	sctp_send_initack(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *,
1146d7ab25acSkp 		    mblk_t *);
11477c478bd9Sstevel@tonic-gate extern void	sctp_send_shutdown(sctp_t *, int);
11487c478bd9Sstevel@tonic-gate extern void	sctp_send_heartbeat(sctp_t *, sctp_faddr_t *);
11497c478bd9Sstevel@tonic-gate extern void	sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t);
115077c67f2fSkcpoon extern void	sctp_set_faddr_current(sctp_t *, sctp_faddr_t *);
115177c67f2fSkcpoon extern int	sctp_set_hdraddrs(sctp_t *);
1152769b977dSvi extern void	sctp_set_saddr(sctp_t *, sctp_faddr_t *);
115345916cd2Sjpk extern void	sctp_sets_init(void);
115445916cd2Sjpk extern void	sctp_sets_fini(void);
11557c478bd9Sstevel@tonic-gate extern void	sctp_shutdown_event(sctp_t *);
11567c478bd9Sstevel@tonic-gate extern void	sctp_stop_faddr_timers(sctp_t *);
115777c67f2fSkcpoon extern int	sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, boolean_t,
115877c67f2fSkcpoon 		    boolean_t, sctp_faddr_t *);
11597c478bd9Sstevel@tonic-gate extern void	sctp_shutdown_complete(sctp_t *);
11607c478bd9Sstevel@tonic-gate extern void	sctp_set_if_mtu(sctp_t *);
11617c478bd9Sstevel@tonic-gate extern void	sctp_set_iplen(sctp_t *, mblk_t *);
11627c478bd9Sstevel@tonic-gate extern void	sctp_set_ulp_prop(sctp_t *);
116377c67f2fSkcpoon extern void	sctp_ss_rexmit(sctp_t *);
11647c478bd9Sstevel@tonic-gate extern size_t	sctp_supaddr_param_len(sctp_t *);
11657c478bd9Sstevel@tonic-gate extern size_t	sctp_supaddr_param(sctp_t *, uchar_t *);
11667c478bd9Sstevel@tonic-gate 
11677c478bd9Sstevel@tonic-gate extern void	sctp_timer(sctp_t *, mblk_t *, clock_t);
1168121e5416Skcpoon extern mblk_t	*sctp_timer_alloc(sctp_t *, pfv_t, int);
11697c478bd9Sstevel@tonic-gate extern void	sctp_timer_call(sctp_t *sctp, mblk_t *);
11707c478bd9Sstevel@tonic-gate extern void	sctp_timer_free(mblk_t *);
11717c478bd9Sstevel@tonic-gate extern void	sctp_timer_stop(mblk_t *);
11727c478bd9Sstevel@tonic-gate extern void	sctp_unlink_faddr(sctp_t *, sctp_faddr_t *);
11737c478bd9Sstevel@tonic-gate 
117477c67f2fSkcpoon extern void	sctp_update_ire(sctp_t *sctp);
1175f4b3ec61Sdh extern in_port_t sctp_update_next_port(in_port_t, zone_t *zone, sctp_stack_t *);
11767c478bd9Sstevel@tonic-gate extern void	sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t);
1177e6f13f86SKacheong Poon extern void	sctp_user_abort(sctp_t *, mblk_t *);
11787c478bd9Sstevel@tonic-gate 
11797c478bd9Sstevel@tonic-gate extern void	sctp_validate_peer(sctp_t *);
11807c478bd9Sstevel@tonic-gate 
11817c478bd9Sstevel@tonic-gate extern void	sctp_wput_ioctl(queue_t *, mblk_t *);
11827c478bd9Sstevel@tonic-gate 
11837c478bd9Sstevel@tonic-gate extern int	sctp_xmit_list_clean(sctp_t *, ssize_t);
11847c478bd9Sstevel@tonic-gate 
11857c478bd9Sstevel@tonic-gate extern void	sctp_zap_addrs(sctp_t *);
11867c478bd9Sstevel@tonic-gate extern void	sctp_zap_faddrs(sctp_t *, int);
11877c478bd9Sstevel@tonic-gate 
11881d8c4025Svi /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */
11891d8c4025Svi 
11901d8c4025Svi extern void	(*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t);
11911d8c4025Svi extern void	(*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t);
11921d8c4025Svi extern void 	(*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t,
11931d8c4025Svi 		    uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t);
11941d8c4025Svi extern void	(*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t);
11951d8c4025Svi extern void	(*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t,
11961d8c4025Svi 		    uchar_t *, size_t, uint_t, int, cl_sctp_handle_t);
11971d8c4025Svi extern void	(*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **,
11981d8c4025Svi 		    size_t, uint_t *, boolean_t);
11991d8c4025Svi 
12007c478bd9Sstevel@tonic-gate /* Send a mp to IP. */
12017c478bd9Sstevel@tonic-gate #define	IP_PUT(mp, conn, isv4)						\
12027c478bd9Sstevel@tonic-gate {									\
1203f4b3ec61Sdh 	sctp_stack_t	*sctps = conn->conn_netstack->netstack_sctp;	\
1204f4b3ec61Sdh 									\
12057c478bd9Sstevel@tonic-gate 	if ((isv4))							\
1206f4b3ec61Sdh 		ip_output((conn), (mp), WR(sctps->sctps_g_q), IP_WPUT);	\
12077c478bd9Sstevel@tonic-gate 	else								\
1208f4b3ec61Sdh 		ip_output_v6((conn), (mp), WR(sctps->sctps_g_q), IP_WPUT);\
12097c478bd9Sstevel@tonic-gate }
12107c478bd9Sstevel@tonic-gate 
12117c478bd9Sstevel@tonic-gate #define	RUN_SCTP(sctp)						\
12127c478bd9Sstevel@tonic-gate {								\
12137c478bd9Sstevel@tonic-gate 	mutex_enter(&(sctp)->sctp_lock);			\
12147c478bd9Sstevel@tonic-gate 	while ((sctp)->sctp_running)				\
12157c478bd9Sstevel@tonic-gate 		cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock);	\
12167c478bd9Sstevel@tonic-gate 	(sctp)->sctp_running = B_TRUE;				\
12177c478bd9Sstevel@tonic-gate 	mutex_exit(&(sctp)->sctp_lock);				\
12187c478bd9Sstevel@tonic-gate }
12197c478bd9Sstevel@tonic-gate 
12207c478bd9Sstevel@tonic-gate /* Wake up recvq taskq */
12217c478bd9Sstevel@tonic-gate #define	WAKE_SCTP(sctp)				\
12227c478bd9Sstevel@tonic-gate {						\
12237c478bd9Sstevel@tonic-gate 	mutex_enter(&(sctp)->sctp_lock);	\
12247c478bd9Sstevel@tonic-gate 	if ((sctp)->sctp_timer_mp != NULL)	\
12257c478bd9Sstevel@tonic-gate 		sctp_process_timer(sctp);	\
12267c478bd9Sstevel@tonic-gate 	(sctp)->sctp_running = B_FALSE;		\
12277c478bd9Sstevel@tonic-gate 	cv_broadcast(&(sctp)->sctp_cv);		\
12287c478bd9Sstevel@tonic-gate 	mutex_exit(&(sctp)->sctp_lock);		\
12297c478bd9Sstevel@tonic-gate }
12307c478bd9Sstevel@tonic-gate 
12317c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
12327c478bd9Sstevel@tonic-gate }
12337c478bd9Sstevel@tonic-gate #endif
12347c478bd9Sstevel@tonic-gate 
12357c478bd9Sstevel@tonic-gate #endif	/* _INET_SCTP_SCTP_IMPL_H */
1236