inet/sctp/sctp_stack.h

	sctp_stack.h revision 2ea701aa039ac7c64509e62bb4a333fb79e9b069
/*
 * 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 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _INET_SCTP_SCTP_STACK_H
#define _INET_SCTP_SCTP_STACK_H

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <sys/netstack.h>
#include <sys/taskq.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* SCTP kstat */
typedef struct sctp_kstat_s {
    kstat_named_t   sctp_add_faddr;
    kstat_named_t   sctp_add_timer;
    kstat_named_t   sctp_conn_create;
    kstat_named_t   sctp_find_next_tq;
    kstat_named_t   sctp_fr_add_hdr;
    kstat_named_t   sctp_fr_not_found;
    kstat_named_t   sctp_output_failed;
    kstat_named_t   sctp_rexmit_failed;
    kstat_named_t   sctp_send_init_failed;
    kstat_named_t   sctp_send_cookie_failed;
    kstat_named_t   sctp_send_cookie_ack_failed;
    kstat_named_t   sctp_send_err_failed;
    kstat_named_t   sctp_send_sack_failed;
    kstat_named_t   sctp_send_shutdown_failed;
    kstat_named_t   sctp_send_shutdown_ack_failed;
    kstat_named_t   sctp_send_shutdown_comp_failed;
    kstat_named_t   sctp_send_user_abort_failed;
    kstat_named_t   sctp_send_asconf_failed;
    kstat_named_t   sctp_send_asconf_ack_failed;
    kstat_named_t   sctp_send_ftsn_failed;
    kstat_named_t   sctp_send_hb_failed;
    kstat_named_t   sctp_return_hb_failed;
    kstat_named_t   sctp_ss_rexmit_failed;
    kstat_named_t   sctp_cl_connect;
    kstat_named_t   sctp_cl_assoc_change;
    kstat_named_t   sctp_cl_check_addrs;
} sctp_kstat_t;

#define SCTP_KSTAT(sctps, x)    ((sctps)->sctps_statistics.x.value.ui64++)

/*
 * SCTP stack instances
 */
struct sctp_stack {
    netstack_t  *sctps_netstack;    /* Common netstack */

    mib2_sctp_t     sctps_mib;

    /* Protected by sctps_g_q_lock */
    queue_t     *sctps_g_q;
    uint_t      sctps_g_q_ref; /* Number of sctp_t's that use it */
    kmutex_t    sctps_g_q_lock;
    kcondvar_t  sctps_g_q_cv;
    kthread_t   *sctps_g_q_creator;
    struct __ldi_handle *sctps_g_q_lh;
    cred_t      *sctps_g_q_cr;    /* For _inactive close call */
    /* The default sctp_t for responding out of the blue packets. */
    struct sctp_s   *sctps_gsctp;

    /* Protected by sctps_g_lock */
    struct list sctps_g_list;   /* SCTP instance data chain */
    kmutex_t    sctps_g_lock;

#define SCTP_NUM_EPRIV_PORTS    64
    int     sctps_g_num_epriv_ports;
    uint16_t    sctps_g_epriv_ports[SCTP_NUM_EPRIV_PORTS];
    kmutex_t    sctps_epriv_port_lock;
    uint_t      sctps_next_port_to_try;

    /* SCTP bind hash list - all sctp_t with state >= BOUND. */
    struct sctp_tf_s    *sctps_bind_fanout;
    /* SCTP listen hash list - all sctp_t with state == LISTEN. */
    struct sctp_tf_s    *sctps_listen_fanout;
    struct sctp_tf_s    *sctps_conn_fanout;
    uint_t          sctps_conn_hash_size;

    /* Only modified during _init and _fini thus no locking is needed. */
    caddr_t         sctps_g_nd;
    struct sctpparam_s  *sctps_params;
    struct sctpparam_s  *sctps_wroff_xtra_param;

/* This lock protects the SCTP recvq_tq_list array and recvq_tq_list_cur_sz. */
    kmutex_t        sctps_rq_tq_lock;
    int         sctps_recvq_tq_list_max_sz;
    taskq_t         **sctps_recvq_tq_list;

    /* Current number of recvq taskq.  At least 1 for the default taskq. */
    uint32_t        sctps_recvq_tq_list_cur_sz;
    uint32_t        sctps_recvq_tq_list_cur;

    /* Global list of SCTP ILLs */
    struct sctp_ill_hash_s  *sctps_g_ills;
    uint32_t        sctps_ills_count;
    krwlock_t       sctps_g_ills_lock;

    /* Global list of SCTP IPIFs */
    struct sctp_ipif_hash_s *sctps_g_ipifs;
    uint32_t        sctps_g_ipifs_count;
    krwlock_t       sctps_g_ipifs_lock;

    /* kstat exporting sctp_mib data */
    kstat_t         *sctps_mibkp;
    kstat_t         *sctps_kstat;
    sctp_kstat_t        sctps_statistics;
};
typedef struct sctp_stack sctp_stack_t;

#ifdef  __cplusplus
}
#endif

#endif  /* _INET_SCTP_SCTP_STACK_H */