common/inet/ipclassifier.h

	ipclassifier.h revision 45916cd2fec6e79bca5dee0421bd39e3c2910d1e
/*
 * 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 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _INET_IPCLASSIFIER_H
#define _INET_IPCLASSIFIER_H

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

#ifdef  __cplusplus
extern "C" {
#endif

#include <inet/common.h>
#include <inet/ip.h>
#include <inet/mi.h>
#include <inet/tcp.h>
#include <inet/ip6.h>
#include <netinet/in.h>     /* for IPPROTO_* constants */
#include <sys/sdt.h>

typedef void (*edesc_spf)(void *, mblk_t *, void *, int);
typedef void (*edesc_rpf)(void *, mblk_t *, void *);

/*
 * ==============================
 * =    The CONNECTION      =
 * ==============================
 */

/*
 * The connection structure contains the common information/flags/ref needed.
 * Implementation will keep the connection struct, the layers (with their
 * respective data for event i.e. tcp_t if event was tcp_input) all in one
 * contiguous memory location.
 */

/* Conn Flags */
#define IPCL_UDPMOD     0x00020000  /* Is UDP module instance */
#define IPCL_TCPMOD     0x00040000  /* Is TCP module instance */
#define IPCL_FULLY_BOUND    0x00080000  /* Bound to correct squeue */
#define IPCL_CHECK_POLICY   0x00100000  /* Needs policy checking */
#define IPCL_SOCKET     0x00200000  /* Sockfs connection */
#define IPCL_ACCEPTOR       0x00400000  /* Sockfs priv acceptor */
#define IPCL_CL_LISTENER    0x00800000  /* Cluster listener */
#define IPCL_EAGER      0x01000000  /* Incoming connection */
#define IPCL_UDP        0x02000000  /* A UDP connection */
#define IPCL_TCP6       0x04000000  /* A TCP6 connection */
#define IPCL_TCP4       0x08000000  /* A TCP connection */
#define IPCL_CONNECTED      0x40000000  /* Conn in connected table */
#define IPCL_BOUND      0x80000000  /* Conn in bind table */

/* Flags identifying the type of conn */
#define IPCL_TCPCONN        0x00000001  /* Flag to indicate cache */
#define IPCL_SCTPCONN       0x00000002
#define IPCL_IPCCONN        0x00000004
#define IPCL_ISV6       0x00000008  /* Is a V6 connection */

/* Conn Masks */
#define IPCL_TCP        (IPCL_TCP4|IPCL_TCP6)
#define IPCL_REMOVED        0x00000020
#define IPCL_REUSED     0x00000040

#define IPCL_IS_TCP4(connp)                     \
    (((connp)->conn_flags & IPCL_TCP4))

#define IPCL_IS_TCP4_CONNECTED_NO_POLICY(connp)             \
    (((connp)->conn_flags &                     \
        (IPCL_TCP4|IPCL_CONNECTED|IPCL_CHECK_POLICY|IPCL_TCP6)) \
        == (IPCL_TCP4|IPCL_CONNECTED))

#define IPCL_IS_CONNECTED(connp)                    \
    ((connp)->conn_flags & IPCL_CONNECTED)

#define IPCL_IS_BOUND(connp)                        \
    ((connp)->conn_flags & IPCL_BOUND)

#define IPCL_IS_TCP4_BOUND(connp)                   \
    (((connp)->conn_flags &                     \
        (IPCL_TCP4|IPCL_BOUND|IPCL_TCP6)) ==            \
        (IPCL_TCP4|IPCL_BOUND))

#define IPCL_IS_FULLY_BOUND(connp)                  \
    ((connp)->conn_flags & IPCL_FULLY_BOUND)

#define IPCL_IS_TCP(connp)                      \
    ((connp)->conn_flags & (IPCL_TCP4|IPCL_TCP6))

/*
 * IPCL_UDP is set on the conn when udp is directly above ip;
 * this flag is cleared the moment udp is popped.
 */
#define IPCL_IS_UDP(connp)                      \
    ((connp)->conn_flags & IPCL_UDP)

#define IPCL_IS_IPTUN(connp)                        \
    ((connp)->conn_ulp == IPPROTO_ENCAP || \
    (connp)->conn_ulp == IPPROTO_IPV6)

typedef struct connf_s connf_t;
typedef struct
{
    int ctb_depth;
#define IP_STACK_DEPTH  15
    pc_t    ctb_stack[IP_STACK_DEPTH];
} conn_trace_t;

struct conn_s {
    kmutex_t    conn_lock;
    uint32_t    conn_ref;       /* Reference counter */
    uint_t      conn_state_flags;   /* IP state flags */
    ire_t       *conn_ire_cache;    /* outbound ire cache */
    uint32_t    conn_flags;     /* Conn Flags */
    unsigned int
        conn_on_sqp : 1,        /* Conn is being processed */
        conn_dontroute : 1,     /* SO_DONTROUTE state */
        conn_loopback : 1,      /* SO_LOOPBACK state */
        conn_broadcast : 1,     /* SO_BROADCAST state */

        conn_reuseaddr : 1,     /* SO_REUSEADDR state */
        conn_multicast_loop : 1,    /* IP_MULTICAST_LOOP */
        conn_multi_router : 1,      /* Wants all multicast pkts */
        conn_draining : 1,      /* ip_wsrv running */

        conn_did_putbq : 1,     /* ip_wput did a putbq */
        conn_unspec_src : 1,        /* IP_UNSPEC_SRC */
        conn_policy_cached : 1,     /* Is policy cached/latched ? */
        conn_in_enforce_policy : 1, /* Enforce Policy on inbound */

        conn_out_enforce_policy : 1,    /* Enforce Policy on outbound */
        conn_af_isv6 : 1,       /* ip address family ver 6 */
        conn_pkt_isv6 : 1,      /* ip packet format ver 6 */
        conn_ipv6_recvpktinfo : 1,  /* IPV6_RECVPKTINFO option */

        conn_ipv6_recvhoplimit : 1, /* IPV6_RECVHOPLIMIT option */
        conn_ipv6_recvhopopts : 1,  /* IPV6_RECVHOPOPTS option */
        conn_ipv6_recvdstopts : 1,  /* IPV6_RECVDSTOPTS option */
        conn_ipv6_recvrthdr : 1,    /* IPV6_RECVRTHDR option */

        conn_ipv6_recvrtdstopts : 1,    /* IPV6_RECVRTHDRDSTOPTS */
        conn_ipv6_v6only : 1,       /* IPV6_V6ONLY */
        conn_ipv6_recvtclass : 1,   /* IPV6_RECVTCLASS */
        conn_ipv6_recvpathmtu : 1,  /* IPV6_RECVPATHMTU */

        conn_pathmtu_valid : 1,     /* The cached mtu is valid. */
        conn_ipv6_dontfrag : 1,     /* IPV6_DONTFRAG */
        /*
         * This option can take on values in [-1, 1] so we store it
         * +1.  Manifest constants IPV6_USE_MIN_MTU_* describe these
         * values.
         */
        conn_fully_bound : 1,       /* Fully bound connection */
        conn_recvif : 1,        /* IP_RECVIF option */

        conn_recvslla : 1,      /* IP_RECVSLLA option */
        conn_mdt_ok : 1,        /* MDT is permitted */
        conn_nexthop_set : 1,
        pad_to_bit_31 : 1;

    tcp_t       *conn_tcp;      /* Pointer to the tcp struct */
    struct udp_s    *conn_udp;      /* Pointer to the udp struct */

    squeue_t    *conn_sqp;      /* Squeue for processing */
    edesc_rpf   conn_recv;      /* Pointer to recv routine */
    void        *conn_pad1;

    ill_t       *conn_xmit_if_ill;  /* Outbound ill */
    ill_t       *conn_nofailover_ill;   /* Failover ill */
    ipsec_latch_t   *conn_latch;        /* latched state */
    ill_t       *conn_outgoing_ill; /* IP{,V6}_BOUND_IF */
    edesc_spf   conn_send;      /* Pointer to send routine */
    queue_t     *conn_rq;       /* Read queue */
    queue_t     *conn_wq;       /* Write queue */
    dev_t       conn_dev;       /* Minor number */

    cred_t      *conn_cred;     /* Credentials */
    connf_t     *conn_g_fanout;     /* Global Hash bucket head */
    struct conn_s   *conn_g_next;       /* Global Hash chain next */
    struct conn_s   *conn_g_prev;       /* Global Hash chain prev */
    struct ipsec_policy_head_s *conn_policy; /* Configured policy */
    in6_addr_t  conn_bound_source_v6;
#define conn_bound_source   V4_PART_OF_V6(conn_bound_source_v6)
    void        *conn_void[1];

    connf_t     *conn_fanout;       /* Hash bucket we're part of */
    struct conn_s   *conn_next;     /* Hash chain next */
    struct conn_s   *conn_prev;     /* Hash chain prev */
    struct {
        in6_addr_t connua_laddr;    /* Local address */
        in6_addr_t connua_faddr;    /* Remote address */
    } connua_v6addr;
#define conn_src    V4_PART_OF_V6(connua_v6addr.connua_laddr)
#define conn_rem    V4_PART_OF_V6(connua_v6addr.connua_faddr)
#define conn_srcv6  connua_v6addr.connua_laddr
#define conn_remv6  connua_v6addr.connua_faddr
    union {
        /* Used for classifier match performance */
        uint32_t        conn_ports2;
        struct {
            in_port_t   tcpu_fport; /* Remote port */
            in_port_t   tcpu_lport; /* Local port */
        } tcpu_ports;
    } u_port;
#define conn_fport  u_port.tcpu_ports.tcpu_fport
#define conn_lport  u_port.tcpu_ports.tcpu_lport
#define conn_ports  u_port.conn_ports2
#define conn_upq    conn_rq
    uint8_t     conn_ulp;       /* protocol type */
    uint8_t     conn_unused_byte;
    kcondvar_t  conn_cv;

    uint_t      conn_proto;     /* SO_PROTOTYPE state */
    ill_t       *conn_incoming_ill; /* IP{,V6}_BOUND_IF */
    ill_t       *conn_outgoing_pill;    /* IP{,V6}_BOUND_PIF */
    ill_t       *conn_oper_pending_ill; /* pending shared ioctl */
    ill_t       *conn_xioctl_pending_ill; /* pending excl ioctl */

    /* this is used only when an unbind is in progress.. */
    struct sq_s *conn_pending_sq; /* waiting for ioctl on sq */
    ilg_t   *conn_ilg;      /* Group memberships */
    int conn_ilg_allocated; /* Number allocated */
    int conn_ilg_inuse;     /* Number currently used */
    int conn_ilg_walker_cnt;    /* No of ilg walkers */
    /* XXXX get rid of this, once ilg_delete_all is fixed */
    kcondvar_t  conn_refcv;

    struct ipif_s   *conn_multicast_ipif;   /* IP_MULTICAST_IF */
    ill_t       *conn_multicast_ill;    /* IPV6_MULTICAST_IF */
    int     conn_orig_bound_ifindex; /* BOUND_IF before MOVE */
    int     conn_orig_multicast_ifindex;
                        /* IPv6 MC IF before MOVE */
    int     conn_orig_xmit_ifindex; /* IP_XMIT_IF before move */
    struct conn_s   *conn_drain_next;   /* Next conn in drain list */
    struct conn_s   *conn_drain_prev;   /* Prev conn in drain list */
    idl_t       *conn_idl;      /* Ptr to the drain list head */
    mblk_t      *conn_ipsec_opt_mp; /* ipsec option mblk */
    uint32_t    conn_src_preferences;   /* prefs for src addr select */
    /* mtuinfo from IPV6_PACKET_TOO_BIG conditional on conn_pathmtu_valid */
    struct ip6_mtuinfo mtuinfo;
    zoneid_t    conn_zoneid;        /* zone connection is in */
    in6_addr_t  conn_nexthop_v6;    /* nexthop IP address */
#define conn_nexthop_v4 V4_PART_OF_V6(conn_nexthop_v6)
    cred_t      *conn_peercred;     /* Peer credentials, if any */

    unsigned int
        conn_ulp_labeled : 1,       /* ULP label is synced */
        conn_mlp_type : 2,      /* mlp_type_t; tsol/tndb.h */
        conn_anon_mlp : 1,      /* user wants anon MLP */

        conn_anon_port : 1,     /* user bound anonymously */
        conn_mac_exempt : 1,        /* unlabeled with loose MAC */
        conn_spare : 26;

#ifdef CONN_DEBUG
#define CONN_TRACE_MAX  10
    int     conn_trace_last;    /* ndx of last used tracebuf */
    conn_trace_t    conn_trace_buf[CONN_TRACE_MAX];
#endif
};

#define CONN_CRED(connp) ((connp)->conn_peercred == NULL ? \
    (connp)->conn_cred : (connp)->conn_peercred)
#define BEST_CRED(mp, connp) ((DB_CRED(mp) != NULL &&   \
    crgetlabel(DB_CRED(mp)) != NULL) ? DB_CRED(mp) : CONN_CRED(connp))

/*
 * connf_t - connection fanout data.
 *
 * The hash tables and their linkage (conn_t.{hashnextp, hashprevp} are
 * protected by the per-bucket lock. Each conn_t inserted in the list
 * points back at the connf_t that heads the bucket.
 */

struct connf_s {
    struct conn_s   *connf_head;
    kmutex_t    connf_lock;
};

#define CONN_INC_REF(connp) {               \
    DTRACE_PROBE1(conn__inc__ref, conn_t *, connp);     \
    mutex_enter(&(connp)->conn_lock);           \
    ASSERT(conn_trace_ref(connp));              \
    (connp)->conn_ref++;                    \
    ASSERT((connp)->conn_ref != 0);             \
    mutex_exit(&(connp)->conn_lock);            \
}

#define CONN_INC_REF_LOCKED(connp)  {           \
    DTRACE_PROBE1(conn__inc__ref, conn_t *, connp);     \
    ASSERT(MUTEX_HELD(&(connp)->conn_lock));        \
    ASSERT(conn_trace_ref(connp));              \
    (connp)->conn_ref++;                    \
    ASSERT((connp)->conn_ref != 0);             \
}

#define CONN_DEC_REF(connp) {                   \
    DTRACE_PROBE1(conn__dec__ref, conn_t *, connp);         \
    mutex_enter(&(connp)->conn_lock);               \
    if ((connp)->conn_ref <= 0)                 \
        cmn_err(CE_PANIC, "CONN_DEC_REF: connp(%p) has ref "    \
            "= %d\n", (void *)(connp), (connp)->conn_ref);  \
    ASSERT(conn_untrace_ref(connp));                \
    (connp)->conn_ref--;                        \
    if ((connp)->conn_ref == 0) {                   \
        /* Refcnt can't increase again, safe to drop lock */    \
        mutex_exit(&(connp)->conn_lock);            \
        ipcl_conn_destroy(connp);               \
    } else {                            \
        cv_broadcast(&(connp)->conn_cv);            \
        mutex_exit(&(connp)->conn_lock);            \
    }                               \
}

#define _IPCL_V4_MATCH(v6addr, v4addr)  \
    (V4_PART_OF_V6((v6addr)) == (v4addr) && IN6_IS_ADDR_V4MAPPED(&(v6addr)))

#define _IPCL_V4_MATCH_ANY(addr)    \
    (IN6_IS_ADDR_V4MAPPED_ANY(&(addr)) || IN6_IS_ADDR_UNSPECIFIED(&(addr)))

/*
 * IPCL_PROTO_MATCH() only matches conns with the specified zoneid, while
 * IPCL_PROTO_MATCH_V6() can match other conns in the multicast case, see
 * ip_fanout_proto().
 */
#define IPCL_PROTO_MATCH(connp, protocol, ipha, ill,            \
    fanout_flags, zoneid)                       \
    ((((connp)->conn_src == INADDR_ANY) ||              \
    (((connp)->conn_src == ((ipha)->ipha_dst)) &&           \
    (((connp)->conn_rem == INADDR_ANY) ||               \
    ((connp)->conn_rem == ((ipha)->ipha_src))))) &&         \
    ((zoneid) == ALL_ZONES || (connp)->conn_zoneid == (zoneid)) &&  \
    (conn_wantpacket((connp), (ill), (ipha),            \
    (fanout_flags), (zoneid)) || ((protocol) == IPPROTO_PIM) || \
    ((protocol) == IPPROTO_RSVP)))

#define IPCL_PROTO_MATCH_V6(connp, protocol, ip6h, ill,            \
    fanout_flags, zoneid)                          \
    ((IN6_IS_ADDR_UNSPECIFIED(&(connp)->conn_srcv6) ||         \
    (IN6_ARE_ADDR_EQUAL(&(connp)->conn_srcv6, &((ip6h)->ip6_dst)) &&   \
    (IN6_IS_ADDR_UNSPECIFIED(&(connp)->conn_remv6) ||          \
    IN6_ARE_ADDR_EQUAL(&(connp)->conn_remv6, &((ip6h)->ip6_src))))) && \
    (conn_wantpacket_v6((connp), (ill), (ip6h),            \
    (fanout_flags), (zoneid)) || ((protocol) == IPPROTO_RSVP)))

#define IPCL_CONN_HASH(src, ports)                  \
    ((unsigned)(ntohl((src)) ^ ((ports) >> 24) ^ ((ports) >> 16) ^  \
    ((ports) >> 8) ^ (ports)) % ipcl_conn_fanout_size)

#define IPCL_CONN_HASH_V6(src, ports)           \
    IPCL_CONN_HASH(V4_PART_OF_V6((src)), (ports))

#define IPCL_CONN_MATCH(connp, proto, src, dst, ports)          \
    ((connp)->conn_ulp == (proto) &&                \
        (connp)->conn_ports == (ports) &&               \
        _IPCL_V4_MATCH((connp)->conn_remv6, (src)) &&       \
        _IPCL_V4_MATCH((connp)->conn_srcv6, (dst)) &&       \
        !(connp)->conn_ipv6_v6only)

#define IPCL_CONN_MATCH_V6(connp, proto, src, dst, ports)       \
    ((connp)->conn_ulp == (proto) &&                \
        (connp)->conn_ports == (ports) &&               \
        IN6_ARE_ADDR_EQUAL(&(connp)->conn_remv6, &(src)) && \
        IN6_ARE_ADDR_EQUAL(&(connp)->conn_srcv6, &(dst)))

#define IPCL_CONN_INIT(connp, protocol, src, rem, ports) {      \
    (connp)->conn_ulp = protocol;                   \
    IN6_IPADDR_TO_V4MAPPED(src, &(connp)->conn_srcv6);      \
    IN6_IPADDR_TO_V4MAPPED(rem, &(connp)->conn_remv6);      \
    (connp)->conn_ports = ports;                    \
}

#define IPCL_CONN_INIT_V6(connp, protocol, src, rem, ports) {       \
    (connp)->conn_ulp = protocol;                   \
    (connp)->conn_srcv6 = src;                  \
    (connp)->conn_remv6 = rem;                  \
    (connp)->conn_ports = ports;                    \
}

#define IPCL_PORT_HASH(port, size) \
    ((((port) >> 8) ^ (port)) & ((size) - 1))

#define IPCL_BIND_HASH(lport)   IPCL_PORT_HASH(lport, ipcl_bind_fanout_size)

#define IPCL_BIND_MATCH(connp, proto, laddr, lport)         \
    ((connp)->conn_ulp == (proto) &&                \
        (connp)->conn_lport == (lport) &&           \
        (_IPCL_V4_MATCH_ANY((connp)->conn_srcv6) ||     \
        _IPCL_V4_MATCH((connp)->conn_srcv6, (laddr))) &&    \
        !(connp)->conn_ipv6_v6only)

#define IPCL_BIND_MATCH_V6(connp, proto, laddr, lport)          \
    ((connp)->conn_ulp == (proto) &&                \
        (connp)->conn_lport == (lport) &&           \
        (IN6_ARE_ADDR_EQUAL(&(connp)->conn_srcv6, &(laddr)) ||  \
        IN6_IS_ADDR_UNSPECIFIED(&(connp)->conn_srcv6)))

#define IPCL_UDP_MATCH(connp, lport, laddr, fport, faddr)       \
    (((connp)->conn_lport == (lport)) &&                \
    ((_IPCL_V4_MATCH_ANY((connp)->conn_srcv6) ||            \
    (_IPCL_V4_MATCH((connp)->conn_srcv6, (laddr)) &&        \
    (_IPCL_V4_MATCH_ANY((connp)->conn_remv6) ||         \
    (_IPCL_V4_MATCH((connp)->conn_remv6, (faddr)) &&        \
    (connp)->conn_fport == (fport)))))) &&              \
    !(connp)->conn_ipv6_v6only)

#define IPCL_UDP_MATCH_V6(connp, lport, laddr, fport, faddr)    \
    (((connp)->conn_lport == (lport)) &&            \
    (IN6_IS_ADDR_UNSPECIFIED(&(connp)->conn_srcv6) ||   \
    (IN6_ARE_ADDR_EQUAL(&(connp)->conn_srcv6, &(laddr)) &&  \
    (IN6_IS_ADDR_UNSPECIFIED(&(connp)->conn_remv6) ||   \
    (IN6_ARE_ADDR_EQUAL(&(connp)->conn_remv6, &(faddr)) &&  \
    (connp)->conn_fport == (fport))))))

#define IPCL_TCP_EAGER_INIT(connp, protocol, src, rem, ports) {     \
    (connp)->conn_flags |= (IPCL_TCP4|IPCL_EAGER);          \
    (connp)->conn_ulp = protocol;                   \
    IN6_IPADDR_TO_V4MAPPED(src, &(connp)->conn_srcv6);      \
    IN6_IPADDR_TO_V4MAPPED(rem, &(connp)->conn_remv6);      \
    (connp)->conn_ports = ports;                    \
    (connp)->conn_send = ip_output;                 \
    (connp)->conn_sqp = IP_SQUEUE_GET(lbolt);           \
}

#define IPCL_TCP_EAGER_INIT_V6(connp, protocol, src, rem, ports) {  \
    (connp)->conn_flags |= (IPCL_TCP6|IPCL_EAGER);          \
    (connp)->conn_ulp = protocol;                   \
    (connp)->conn_srcv6 = src;                  \
    (connp)->conn_remv6 = rem;                  \
    (connp)->conn_ports = ports;                    \
    (connp)->conn_send = ip_output_v6;              \
    (connp)->conn_sqp = IP_SQUEUE_GET(lbolt);           \
}

#define ipcl_proto_search(protocol)                 \
    (ipcl_proto_fanout[(protocol)].connf_head)

#define IPCL_UDP_HASH(lport)    IPCL_PORT_HASH(lport, ipcl_udp_fanout_size)

#define CONN_G_HASH_SIZE    1024

/* Raw socket hash function. */
#define IPCL_RAW_HASH(lport)    IPCL_PORT_HASH(lport, ipcl_raw_fanout_size)

/*
 * This is similar to IPCL_BIND_MATCH except that the local port check
 * is changed to a wildcard port check.
 */
#define IPCL_RAW_MATCH(connp, proto, laddr)         \
    ((connp)->conn_ulp == (proto) &&            \
    (connp)->conn_lport == 0 &&             \
    (_IPCL_V4_MATCH_ANY((connp)->conn_srcv6) ||     \
    _IPCL_V4_MATCH((connp)->conn_srcv6, (laddr))))

#define IPCL_RAW_MATCH_V6(connp, proto, laddr)          \
    ((connp)->conn_ulp == (proto) &&            \
    (connp)->conn_lport == 0 &&             \
    (IN6_IS_ADDR_UNSPECIFIED(&(connp)->conn_srcv6) ||   \
    IN6_ARE_ADDR_EQUAL(&(connp)->conn_srcv6, &(laddr))))

/* hash tables */
extern connf_t  rts_clients;
extern connf_t  *ipcl_conn_fanout;
extern connf_t  *ipcl_bind_fanout;
extern connf_t  ipcl_proto_fanout[IPPROTO_MAX + 1];
extern connf_t  ipcl_proto_fanout_v6[IPPROTO_MAX + 1];
extern connf_t  *ipcl_udp_fanout;
extern connf_t  *ipcl_globalhash_fanout;
extern connf_t  *ipcl_raw_fanout;
extern uint_t   ipcl_conn_fanout_size;
extern uint_t   ipcl_bind_fanout_size;
extern uint_t   ipcl_udp_fanout_size;
extern uint_t   ipcl_raw_fanout_size;

/* Function prototypes */
extern void ipcl_init(void);
extern void ipcl_destroy(void);
extern conn_t *ipcl_conn_create(uint32_t, int);
extern void ipcl_conn_destroy(conn_t *);

void ipcl_hash_insert_connected(connf_t *, conn_t *);
void ipcl_hash_insert_bound(connf_t *, conn_t *);
void ipcl_hash_insert_wildcard(connf_t *, conn_t *);
void ipcl_hash_remove(conn_t *);
void ipcl_hash_remove_locked(conn_t *connp, connf_t *connfp);

extern int  ipcl_bind_insert(conn_t *, uint8_t, ipaddr_t, uint16_t);
extern int  ipcl_bind_insert_v6(conn_t *, uint8_t, const in6_addr_t *,
            uint16_t);
extern int  ipcl_conn_insert(conn_t *, uint8_t, ipaddr_t, ipaddr_t,
            uint32_t);
extern int  ipcl_conn_insert_v6(conn_t *, uint8_t, const in6_addr_t *,
            const in6_addr_t *, uint32_t, uint_t);
extern conn_t   *ipcl_get_next_conn(connf_t *, conn_t *, uint32_t);

void ipcl_proto_insert(conn_t *, uint8_t);
void ipcl_proto_insert_v6(conn_t *, uint8_t);
conn_t *ipcl_classify_v4(mblk_t *, uint8_t, uint_t, zoneid_t);
conn_t *ipcl_classify_v6(mblk_t *, uint8_t, uint_t, zoneid_t);
conn_t *ipcl_classify(mblk_t *, zoneid_t);
conn_t *ipcl_classify_raw(mblk_t *, uint8_t, zoneid_t, uint32_t, ipha_t *);
void    ipcl_globalhash_insert(conn_t *);
void    ipcl_globalhash_remove(conn_t *);
void    ipcl_walk(pfv_t, void *);
conn_t  *ipcl_tcp_lookup_reversed_ipv4(ipha_t *, tcph_t *, int);
conn_t  *ipcl_tcp_lookup_reversed_ipv6(ip6_t *, tcpha_t *, int, uint_t);
conn_t  *ipcl_lookup_listener_v4(uint16_t, ipaddr_t, zoneid_t);
conn_t  *ipcl_lookup_listener_v6(uint16_t, in6_addr_t *, uint_t, zoneid_t);
int conn_trace_ref(conn_t *);
int conn_untrace_ref(conn_t *);
conn_t *ipcl_conn_tcp_lookup_reversed_ipv4(conn_t *, ipha_t *, tcph_t *);
conn_t *ipcl_conn_tcp_lookup_reversed_ipv6(conn_t *, ip6_t *, tcph_t *);
#ifdef  __cplusplus
}
#endif

#endif  /* _INET_IPCLASSIFIER_H */