usr/src/uts/common/sys/socketvar.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
  24  */
  25
  26 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  27 /*        All Rights Reserved   */
  28
  29 /*
  30  * University Copyright- Copyright (c) 1982, 1986, 1988
  31  * The Regents of the University of California
  32  * All Rights Reserved
  33  *
  34  * University Acknowledgment- Portions of this document are derived from
  35  * software developed by the University of California, Berkeley, and its
  36  * contributors.
  37  */
  38 /*
  39  * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
  40  */
  41
  42 #ifndef _SYS_SOCKETVAR_H
  43 #define _SYS_SOCKETVAR_H
  44
  45 #include <sys/types.h>
  46 #include <sys/stream.h>
  47 #include <sys/t_lock.h>
  48 #include <sys/cred.h>
  49 #include <sys/vnode.h>
  50 #include <sys/file.h>
  51 #include <sys/param.h>
  52 #include <sys/zone.h>
  53 #include <sys/sdt.h>
  54 #include <sys/modctl.h>
  55 #include <sys/atomic.h>
  56 #include <sys/socket.h>
  57 #include <sys/ksocket.h>
  58 #include <sys/kstat.h>
  59
  60 #ifdef _KERNEL
  61 #include <sys/vfs_opreg.h>
  62 #endif
  63
  64 #ifdef  __cplusplus
  65 extern "C" {
  66 #endif
  67
  68 /*
  69  * Internal representation of the address used to represent addresses
  70  * in the loopback transport for AF_UNIX. While the sockaddr_un is used
  71  * as the sockfs layer address for AF_UNIX the pathnames contained in
  72  * these addresses are not unique (due to relative pathnames) thus can not
  73  * be used in the transport.
  74  *
  75  * The transport level address consists of a magic number (used to separate the
  76  * name space for specific and implicit binds). For a specific bind
  77  * this is followed by a "vnode *" which ensures that all specific binds
  78  * have a unique transport level address. For implicit binds the latter
  79  * part of the address is a byte string (of the same length as a pointer)
  80  * that is assigned by the loopback transport.
  81  *
  82  * The uniqueness assumes that the loopback transport has a separate namespace
  83  * for sockets in order to avoid name conflicts with e.g. TLI use of the
  84  * same transport.
  85  */
  86 struct so_ux_addr {
  87         void    *soua_vp;       /* vnode pointer or assigned by tl */
  88         uint_t  soua_magic;     /* See below */
  89 };
  90
  91 #define SOU_MAGIC_EXPLICIT      0x75787670      /* "uxvp" */
  92 #define SOU_MAGIC_IMPLICIT      0x616e6f6e      /* "anon" */
  93
  94 struct sockaddr_ux {
  95         sa_family_t             sou_family;     /* AF_UNIX */
  96         struct so_ux_addr       sou_addr;
  97 };
  98
  99 #if defined(_KERNEL) || defined(_KMEMUSER)
 100
 101 #include <sys/socket_proto.h>
 102
 103 typedef struct sonodeops sonodeops_t;
 104 typedef struct sonode sonode_t;
 105
 106 struct sodirect_s;
 107
 108 /*
 109  * The sonode represents a socket. A sonode never exist in the file system
 110  * name space and can not be opened using open() - only the socket, socketpair
 111  * and accept calls create sonodes.
 112  *
 113  * The locking of sockfs uses the so_lock mutex plus the SOLOCKED and
 114  * SOREADLOCKED flags in so_flag. The mutex protects all the state in the
 115  * sonode. It is expected that the underlying transport protocol serializes
 116  * socket operations, so sockfs will not normally not single-thread
 117  * operations. However, certain sockets, including TPI based ones, can only
 118  * handle one control operation at a time. The SOLOCKED flag is used to
 119  * single-thread operations from sockfs users to prevent e.g. multiple bind()
 120  * calls to operate on the same sonode concurrently. The SOREADLOCKED flag is
 121  * used to ensure that only one thread sleeps in kstrgetmsg for a given
 122  * sonode. This is needed to ensure atomic operation for things like
 123  * MSG_WAITALL.
 124  *
 125  * The so_fallback_rwlock is used to ensure that for sockets that can
 126  * fall back to TPI, the fallback is not initiated until all pending
 127  * operations have completed.
 128  *
 129  * Note that so_lock is sometimes held across calls that might go to sleep
 130  * (kmem_alloc and soallocproto*). This implies that no other lock in
 131  * the system should be held when calling into sockfs; from the system call
 132  * side or from strrput (in case of TPI based sockets). If locks are held
 133  * while calling into sockfs the system might hang when running low on memory.
 134  */
 135 struct sonode {
 136         struct  vnode   *so_vnode;      /* vnode associated with this sonode */
 137
 138         sonodeops_t     *so_ops;        /* operations vector for this sonode */
 139         void            *so_priv;       /* sonode private data */
 140
 141         krwlock_t       so_fallback_rwlock;
 142         kmutex_t        so_lock;        /* protects sonode fields */
 143
 144         kcondvar_t      so_state_cv;    /* synchronize state changes */
 145         kcondvar_t      so_single_cv;   /* wait due to SOLOCKED */
 146         kcondvar_t      so_read_cv;     /* wait due to SOREADLOCKED */
 147
 148         /* These fields are protected by so_lock */
 149
 150         uint_t          so_state;       /* internal state flags SS_*, below */
 151         uint_t          so_mode;        /* characteristics on socket. SM_* */
 152         ushort_t        so_flag;        /* flags, see below */
 153         int             so_count;       /* count of opened references */
 154
 155         sock_connid_t   so_proto_connid; /* protocol generation number */
 156
 157         ushort_t        so_error;       /* error affecting connection */
 158
 159         struct sockparams *so_sockparams;       /* vnode or socket module */
 160         /* Needed to recreate the same socket for accept */
 161         short   so_family;
 162         short   so_type;
 163         short   so_protocol;
 164         short   so_version;             /* From so_socket call */
 165
 166         /* Accept queue */
 167         kmutex_t        so_acceptq_lock;        /* protects accept queue */
 168         list_t          so_acceptq_list;        /* pending conns */
 169         list_t          so_acceptq_defer;       /* deferred conns */
 170         list_node_t     so_acceptq_node;        /* acceptq list node */
 171         unsigned int    so_acceptq_len;         /* # of conns (both lists) */
 172         unsigned int    so_backlog;             /* Listen backlog */
 173         kcondvar_t      so_acceptq_cv;          /* wait for new conn. */
 174         struct sonode   *so_listener;           /* parent socket */
 175
 176         /* Options */
 177         short   so_options;             /* From socket call, see socket.h */
 178         struct linger   so_linger;      /* SO_LINGER value */
 179 #define so_sndbuf       so_proto_props.sopp_txhiwat     /* SO_SNDBUF value */
 180 #define so_sndlowat     so_proto_props.sopp_txlowat     /* tx low water mark */
 181 #define so_rcvbuf       so_proto_props.sopp_rxhiwat     /* SO_RCVBUF value */
 182 #define so_rcvlowat     so_proto_props.sopp_rxlowat     /* rx low water mark */
 183 #define so_max_addr_len so_proto_props.sopp_maxaddrlen
 184 #define so_minpsz       so_proto_props.sopp_minpsz
 185 #define so_maxpsz       so_proto_props.sopp_maxpsz
 186
 187         int     so_xpg_rcvbuf;          /* SO_RCVBUF value for XPG4 socket */
 188         clock_t so_sndtimeo;            /* send timeout */
 189         clock_t so_rcvtimeo;            /* recv timeout */
 190
 191         mblk_t  *so_oobmsg;             /* outofline oob data */
 192         ssize_t so_oobmark;             /* offset of the oob data */
 193
 194         pid_t   so_pgrp;                /* pgrp for signals */
 195
 196         cred_t          *so_peercred;   /* connected socket peer cred */
 197         pid_t           so_cpid;        /* connected socket peer cached pid */
 198         zoneid_t        so_zoneid;      /* opener's zoneid */
 199
 200         struct pollhead so_poll_list;   /* common pollhead */
 201         short           so_pollev;      /* events that should be generated */
 202
 203         /* Receive */
 204         unsigned int    so_rcv_queued;  /* # bytes on both rcv lists */
 205         mblk_t          *so_rcv_q_head; /* processing/copyout rcv queue */
 206         mblk_t          *so_rcv_q_last_head;
 207         mblk_t          *so_rcv_head;   /* protocol prequeue */
 208         mblk_t          *so_rcv_last_head;      /* last mblk in b_next chain */
 209         kcondvar_t      so_rcv_cv;      /* wait for data */
 210         uint_t          so_rcv_wanted;  /* # of bytes wanted by app */
 211         timeout_id_t    so_rcv_timer_tid;
 212
 213 #define so_rcv_thresh   so_proto_props.sopp_rcvthresh
 214 #define so_rcv_timer_interval so_proto_props.sopp_rcvtimer
 215
 216         kcondvar_t      so_snd_cv;      /* wait for snd buffers */
 217         uint32_t
 218                 so_snd_qfull: 1,        /* Transmit full */
 219                 so_rcv_wakeup: 1,
 220                 so_snd_wakeup: 1,
 221                 so_not_str: 1,  /* B_TRUE if not streams based socket */
 222                 so_pad_to_bit_31: 28;
 223
 224         /* Communication channel with protocol */
 225         sock_lower_handle_t     so_proto_handle;
 226         sock_downcalls_t        *so_downcalls;
 227
 228         struct sock_proto_props so_proto_props; /* protocol settings */
 229         boolean_t               so_flowctrld;   /* Flow controlled */
 230         uint_t                  so_copyflag;    /* Copy related flag */
 231         kcondvar_t              so_copy_cv;     /* Copy cond variable */
 232
 233         /* kernel sockets */
 234         ksocket_callbacks_t     so_ksock_callbacks;
 235         void                    *so_ksock_cb_arg;       /* callback argument */
 236         kcondvar_t              so_closing_cv;
 237
 238         /* != NULL for sodirect enabled socket */
 239         struct sodirect_s       *so_direct;
 240
 241         /* socket filters */
 242         uint_t                  so_filter_active;       /* # of active fil */
 243         uint_t                  so_filter_tx;           /* pending tx ops */
 244         struct sof_instance     *so_filter_top;         /* top of stack */
 245         struct sof_instance     *so_filter_bottom;      /* bottom of stack */
 246         clock_t                 so_filter_defertime;    /* time when deferred */
 247 };
 248
 249 #define SO_HAVE_DATA(so)                                                \
 250         /*                                                              \
 251          * For the (tid == 0) case we must check so_rcv_{q_,}head       \
 252          * rather than (so_rcv_queued > 0), since the latter does not   \
 253          * take into account mblks with only control/name information.  \
 254          */                                                             \
 255         ((so)->so_rcv_timer_tid == 0 && ((so)->so_rcv_head != NULL ||   \
 256         (so)->so_rcv_q_head != NULL)) ||                                \
 257         ((so)->so_state & SS_CANTRCVMORE)
 258
 259 /*
 260  * Events handled by the protocol (in case sd_poll is set)
 261  */
 262 #define SO_PROTO_POLLEV         (POLLIN|POLLRDNORM|POLLRDBAND)
 263
 264
 265 #endif /* _KERNEL || _KMEMUSER */
 266
 267 /* flags */
 268 #define SOMOD           0x0001          /* update socket modification time */
 269 #define SOACC           0x0002          /* update socket access time */
 270
 271 #define SOLOCKED        0x0010          /* use to serialize open/closes */
 272 #define SOREADLOCKED    0x0020          /* serialize kstrgetmsg calls */
 273 #define SOCLONE         0x0040          /* child of clone driver */
 274 #define SOASYNC_UNBIND  0x0080          /* wait for ACK of async unbind */
 275
 276 #define SOCK_IS_NONSTR(so)      ((so)->so_not_str)
 277
 278 /*
 279  * Socket state bits.
 280  */
 281 #define SS_ISCONNECTED          0x00000001 /* socket connected to a peer */
 282 #define SS_ISCONNECTING         0x00000002 /* in process, connecting to peer */
 283 #define SS_ISDISCONNECTING      0x00000004 /* in process of disconnecting */
 284 #define SS_CANTSENDMORE         0x00000008 /* can't send more data to peer */
 285
 286 #define SS_CANTRCVMORE          0x00000010 /* can't receive more data */
 287 #define SS_ISBOUND              0x00000020 /* socket is bound */
 288 #define SS_NDELAY               0x00000040 /* FNDELAY non-blocking */
 289 #define SS_NONBLOCK             0x00000080 /* O_NONBLOCK non-blocking */
 290
 291 #define SS_ASYNC                0x00000100 /* async i/o notify */
 292 #define SS_ACCEPTCONN           0x00000200 /* listen done */
 293 /*      unused                  0x00000400 */   /* was SS_HASCONNIND */
 294 #define SS_SAVEDEOR             0x00000800 /* Saved MSG_EOR rcv side state */
 295
 296 #define SS_RCVATMARK            0x00001000 /* at mark on input */
 297 #define SS_OOBPEND              0x00002000 /* OOB pending or present - poll */
 298 #define SS_HAVEOOBDATA          0x00004000 /* OOB data present */
 299 #define SS_HADOOBDATA           0x00008000 /* OOB data consumed */
 300 #define SS_CLOSING              0x00010000 /* in process of closing */
 301
 302 #define SS_FIL_DEFER            0x00020000 /* filter deferred notification */
 303 #define SS_FILOP_OK             0x00040000 /* socket can attach filters */
 304 #define SS_FIL_RCV_FLOWCTRL     0x00080000 /* filter asserted rcv flow ctrl */
 305 #define SS_FIL_SND_FLOWCTRL     0x00100000 /* filter asserted snd flow ctrl */
 306 #define SS_FIL_STOP             0x00200000 /* no more filter actions */
 307
 308 #define SS_SODIRECT             0x00400000 /* transport supports sodirect */
 309
 310 #define SS_SENTLASTREADSIG      0x01000000 /* last rx signal has been sent */
 311 #define SS_SENTLASTWRITESIG     0x02000000 /* last tx signal has been sent */
 312
 313 #define SS_FALLBACK_DRAIN       0x20000000 /* data was/is being drained */
 314 #define SS_FALLBACK_PENDING     0x40000000 /* fallback is pending */
 315 #define SS_FALLBACK_COMP        0x80000000 /* fallback has completed */
 316
 317
 318 /* Set of states when the socket can't be rebound */
 319 #define SS_CANTREBIND   (SS_ISCONNECTED|SS_ISCONNECTING|SS_ISDISCONNECTING|\
 320                             SS_CANTSENDMORE|SS_CANTRCVMORE|SS_ACCEPTCONN)
 321
 322 /*
 323  * Sockets that can fall back to TPI must ensure that fall back is not
 324  * initiated while a thread is using a socket.
 325  */
 326 #define SO_BLOCK_FALLBACK(so, fn)                               \
 327         ASSERT(MUTEX_NOT_HELD(&(so)->so_lock));                 \
 328         rw_enter(&(so)->so_fallback_rwlock, RW_READER);         \
 329         if ((so)->so_state & (SS_FALLBACK_COMP|SS_FILOP_OK)) {  \
 330                 if ((so)->so_state & SS_FALLBACK_COMP) {        \
 331                         rw_exit(&(so)->so_fallback_rwlock);     \
 332                         return (fn);                            \
 333                 } else {                                        \
 334                         mutex_enter(&(so)->so_lock);            \
 335                         (so)->so_state &= ~SS_FILOP_OK;         \
 336                         mutex_exit(&(so)->so_lock);             \
 337                 }                                               \
 338         }
 339
 340 #define SO_UNBLOCK_FALLBACK(so) {                       \
 341         rw_exit(&(so)->so_fallback_rwlock);             \
 342 }
 343
 344 #define SO_SND_FLOWCTRLD(so)    \
 345         ((so)->so_snd_qfull || (so)->so_state & SS_FIL_SND_FLOWCTRL)
 346
 347 /* Poll events */
 348 #define SO_POLLEV_IN            0x1     /* POLLIN wakeup needed */
 349 #define SO_POLLEV_ALWAYS        0x2     /* wakeups */
 350
 351 /*
 352  * Characteristics of sockets. Not changed after the socket is created.
 353  */
 354 #define SM_PRIV                 0x001   /* privileged for broadcast, raw... */
 355 #define SM_ATOMIC               0x002   /* atomic data transmission */
 356 #define SM_ADDR                 0x004   /* addresses given with messages */
 357 #define SM_CONNREQUIRED         0x008   /* connection required by protocol */
 358
 359 #define SM_FDPASSING            0x010   /* passes file descriptors */
 360 #define SM_EXDATA               0x020   /* Can handle T_EXDATA_REQ */
 361 #define SM_OPTDATA              0x040   /* Can handle T_OPTDATA_REQ */
 362 #define SM_BYTESTREAM           0x080   /* Byte stream - can use M_DATA */
 363
 364 #define SM_ACCEPTOR_ID          0x100   /* so_acceptor_id is valid */
 365
 366 #define SM_KERNEL               0x200   /* kernel socket */
 367
 368 /* The modes below are only for non-streams sockets */
 369 #define SM_ACCEPTSUPP           0x400   /* can handle accept() */
 370 #define SM_SENDFILESUPP         0x800   /* Private: proto supp sendfile  */
 371
 372 /*
 373  * Socket versions. Used by the socket library when calling _so_socket().
 374  */
 375 #define SOV_STREAM      0       /* Not a socket - just a stream */
 376 #define SOV_DEFAULT     1       /* Select based on so_default_version */
 377 #define SOV_SOCKSTREAM  2       /* Socket plus streams operations */
 378 #define SOV_SOCKBSD     3       /* Socket with no streams operations */
 379 #define SOV_XPG4_2      4       /* Xnet socket */
 380
 381 #if defined(_KERNEL) || defined(_KMEMUSER)
 382
 383 /*
 384  * sonode create and destroy functions.
 385  */
 386 typedef struct sonode *(*so_create_func_t)(struct sockparams *,
 387     int, int, int, int, int, int *, cred_t *);
 388 typedef void (*so_destroy_func_t)(struct sonode *);
 389
 390 /* STREAM device information */
 391 typedef struct sdev_info {
 392         char    *sd_devpath;
 393         int     sd_devpathlen; /* Is 0 if sp_devpath is a static string */
 394         vnode_t *sd_vnode;
 395 } sdev_info_t;
 396
 397 #define SOCKMOD_VERSION_1       1
 398 #define SOCKMOD_VERSION         2
 399
 400 /* name of the TPI pseudo socket module */
 401 #define SOTPI_SMOD_NAME         "socktpi"
 402
 403 typedef struct __smod_priv_s {
 404         so_create_func_t        smodp_sock_create_func;
 405         so_destroy_func_t       smodp_sock_destroy_func;
 406         so_proto_fallback_func_t smodp_proto_fallback_func;
 407         const char              *smodp_fallback_devpath_v4;
 408         const char              *smodp_fallback_devpath_v6;
 409 } __smod_priv_t;
 410
 411 /*
 412  * Socket module register information
 413  */
 414 typedef struct smod_reg_s {
 415         int             smod_version;
 416         char            *smod_name;
 417         size_t          smod_uc_version;
 418         size_t          smod_dc_version;
 419         so_proto_create_func_t  smod_proto_create_func;
 420
 421         /* __smod_priv_data must be NULL */
 422         __smod_priv_t   *__smod_priv;
 423 } smod_reg_t;
 424
 425 /*
 426  * Socket module information
 427  */
 428 typedef struct smod_info {
 429         int             smod_version;
 430         char            *smod_name;
 431         uint_t          smod_refcnt;            /* # of entries */
 432         size_t          smod_uc_version;        /* upcall version */
 433         size_t          smod_dc_version;        /* down call version */
 434         so_proto_create_func_t  smod_proto_create_func;
 435         so_proto_fallback_func_t smod_proto_fallback_func;
 436         const char              *smod_fallback_devpath_v4;
 437         const char              *smod_fallback_devpath_v6;
 438         so_create_func_t        smod_sock_create_func;
 439         so_destroy_func_t       smod_sock_destroy_func;
 440         list_node_t     smod_node;
 441 } smod_info_t;
 442
 443 typedef struct sockparams_stats {
 444         kstat_named_t   sps_nfallback;  /* # of fallbacks to TPI */
 445         kstat_named_t   sps_nactive;    /* # of active sockets */
 446         kstat_named_t   sps_ncreate;    /* total # of created sockets */
 447 } sockparams_stats_t;
 448
 449 /*
 450  * sockparams
 451  *
 452  * Used for mapping family/type/protocol to a socket module or STREAMS device
 453  */
 454 struct sockparams {
 455         /*
 456          * The family, type, protocol, sdev_info and smod_name are
 457          * set when the entry is created, and they will never change
 458          * thereafter.
 459          */
 460         int             sp_family;
 461         int             sp_type;
 462         int             sp_protocol;
 463
 464         sdev_info_t     sp_sdev_info;   /* STREAM device */
 465         char            *sp_smod_name;  /* socket module name */
 466
 467         kmutex_t        sp_lock;        /* lock for refcnt and smod_info */
 468         uint64_t        sp_refcnt;      /* entry reference count */
 469         smod_info_t     *sp_smod_info;  /* socket module */
 470
 471         sockparams_stats_t sp_stats;
 472         kstat_t         *sp_kstat;
 473
 474         /*
 475          * The entries below are only modified while holding
 476          * sockconf_lock as a writer.
 477          */
 478         int             sp_flags;       /* see below */
 479         list_node_t     sp_node;
 480
 481         list_t          sp_auto_filters; /* list of automatic filters */
 482         list_t          sp_prog_filters; /* list of programmatic filters */
 483 };
 484
 485 struct sof_entry;
 486
 487 typedef struct sp_filter {
 488         struct sof_entry *spf_filter;
 489         list_node_t     spf_node;
 490 } sp_filter_t;
 491
 492
 493 /*
 494  * sockparams flags
 495  */
 496 #define SOCKPARAMS_EPHEMERAL    0x1     /* temp. entry, not on global list */
 497
 498 extern void sockparams_init(void);
 499 extern struct sockparams *sockparams_hold_ephemeral_bydev(int, int, int,
 500     const char *, int, int *);
 501 extern struct sockparams *sockparams_hold_ephemeral_bymod(int, int, int,
 502     const char *, int, int *);
 503 extern void sockparams_ephemeral_drop_last_ref(struct sockparams *);
 504
 505 extern struct sockparams *sockparams_create(int, int, int, char *, char *, int,
 506     int, int, int *);
 507 extern void     sockparams_destroy(struct sockparams *);
 508 extern int      sockparams_add(struct sockparams *);
 509 extern int      sockparams_delete(int, int, int);
 510 extern int      sockparams_new_filter(struct sof_entry *);
 511 extern void     sockparams_filter_cleanup(struct sof_entry *);
 512 extern int      sockparams_copyout_socktable(uintptr_t);
 513
 514 extern void smod_init(void);
 515 extern void smod_add(smod_info_t *);
 516 extern int smod_register(const smod_reg_t *);
 517 extern int smod_unregister(const char *);
 518 extern smod_info_t *smod_lookup_byname(const char *);
 519
 520 #define SOCKPARAMS_HAS_DEVICE(sp)                                       \
 521         ((sp)->sp_sdev_info.sd_devpath != NULL)
 522
 523 /* Increase the smod_info_t reference count */
 524 #define SMOD_INC_REF(smodp) {                                           \
 525         ASSERT((smodp) != NULL);                                        \
 526         DTRACE_PROBE1(smodinfo__inc__ref, struct smod_info *, (smodp)); \
 527         atomic_inc_uint(&(smodp)->smod_refcnt);                         \
 528 }
 529
 530 /*
 531  * Decreace the socket module entry reference count.
 532  * When no one mapping to the entry, we try to unload the module from the
 533  * kernel. If the module can't unload, just leave the module entry with
 534  * a zero refcnt.
 535  */
 536 #define SMOD_DEC_REF(smodp, modname) {                                  \
 537         ASSERT((smodp) != NULL);                                        \
 538         ASSERT((smodp)->smod_refcnt != 0);                              \
 539         atomic_dec_uint(&(smodp)->smod_refcnt);                         \
 540         /*                                                              \
 541          * No need to atomically check the return value because the     \
 542          * socket module framework will verify that no one is using     \
 543          * the module before unloading. Worst thing that can happen     \
 544          * here is multiple calls to mod_remove_by_name(), which is OK. \
 545          */                                                             \
 546         if ((smodp)->smod_refcnt == 0)                                  \
 547                 (void) mod_remove_by_name(modname);                     \
 548 }
 549
 550 /* Increase the reference count */
 551 #define SOCKPARAMS_INC_REF(sp) {                                        \
 552         ASSERT((sp) != NULL);                                           \
 553         DTRACE_PROBE1(sockparams__inc__ref, struct sockparams *, (sp)); \
 554         mutex_enter(&(sp)->sp_lock);                                    \
 555         (sp)->sp_refcnt++;                                              \
 556         ASSERT((sp)->sp_refcnt != 0);                                   \
 557         mutex_exit(&(sp)->sp_lock);                                     \
 558 }
 559
 560 /*
 561  * Decrease the reference count.
 562  *
 563  * If the sockparams is ephemeral, then the thread dropping the last ref
 564  * count will destroy the entry.
 565  */
 566 #define SOCKPARAMS_DEC_REF(sp) {                                        \
 567         ASSERT((sp) != NULL);                                           \
 568         DTRACE_PROBE1(sockparams__dec__ref, struct sockparams *, (sp)); \
 569         mutex_enter(&(sp)->sp_lock);                                    \
 570         ASSERT((sp)->sp_refcnt > 0);                                    \
 571         if ((sp)->sp_refcnt == 1) {                                     \
 572                 if ((sp)->sp_flags & SOCKPARAMS_EPHEMERAL) {            \
 573                         mutex_exit(&(sp)->sp_lock);                     \
 574                         sockparams_ephemeral_drop_last_ref((sp));       \
 575                 } else {                                                \
 576                         (sp)->sp_refcnt--;                              \
 577                         if ((sp)->sp_smod_info != NULL) {               \
 578                                 SMOD_DEC_REF((sp)->sp_smod_info,        \
 579                                     (sp)->sp_smod_name);                \
 580                         }                                               \
 581                         (sp)->sp_smod_info = NULL;                      \
 582                         mutex_exit(&(sp)->sp_lock);                     \
 583                 }                                                       \
 584         } else {                                                        \
 585                 (sp)->sp_refcnt--;                                      \
 586                 mutex_exit(&(sp)->sp_lock);                             \
 587         }                                                               \
 588 }
 589
 590 /*
 591  * Used to traverse the list of AF_UNIX sockets to construct the kstat
 592  * for netstat(1m).
 593  */
 594 struct socklist {
 595         kmutex_t        sl_lock;
 596         struct sonode   *sl_list;
 597 };
 598
 599 extern struct socklist socklist;
 600 /*
 601  * ss_full_waits is the number of times the reader thread
 602  * waits when the queue is full and ss_empty_waits is the number
 603  * of times the consumer thread waits when the queue is empty.
 604  * No locks for these as they are just indicators of whether
 605  * disk or network or both is slow or fast.
 606  */
 607 struct sendfile_stats {
 608         uint32_t ss_file_cached;
 609         uint32_t ss_file_not_cached;
 610         uint32_t ss_full_waits;
 611         uint32_t ss_empty_waits;
 612         uint32_t ss_file_segmap;
 613 };
 614
 615 /*
 616  * A single sendfile request is represented by snf_req.
 617  */
 618 typedef struct snf_req {
 619         struct snf_req  *sr_next;
 620         mblk_t          *sr_mp_head;
 621         mblk_t          *sr_mp_tail;
 622         kmutex_t        sr_lock;
 623         kcondvar_t      sr_cv;
 624         uint_t          sr_qlen;
 625         int             sr_hiwat;
 626         int             sr_lowat;
 627         int             sr_operation;
 628         struct vnode    *sr_vp;
 629         file_t          *sr_fp;
 630         ssize_t         sr_maxpsz;
 631         u_offset_t      sr_file_off;
 632         u_offset_t      sr_file_size;
 633 #define SR_READ_DONE    0x80000000
 634         int             sr_read_error;
 635         int             sr_write_error;
 636 } snf_req_t;
 637
 638 /* A queue of sendfile requests */
 639 struct sendfile_queue {
 640         snf_req_t       *snfq_req_head;
 641         snf_req_t       *snfq_req_tail;
 642         kmutex_t        snfq_lock;
 643         kcondvar_t      snfq_cv;
 644         int             snfq_svc_threads;       /* # of service threads */
 645         int             snfq_idle_cnt;          /* # of idling threads */
 646         int             snfq_max_threads;
 647         int             snfq_req_cnt;           /* Number of requests */
 648 };
 649
 650 #define READ_OP                 1
 651 #define SNFQ_TIMEOUT            (60 * 5 * hz)   /* 5 minutes */
 652
 653 /* Socket network operations switch */
 654 struct sonodeops {
 655         int     (*sop_init)(struct sonode *, struct sonode *, cred_t *,
 656                     int);
 657         int     (*sop_accept)(struct sonode *, int, cred_t *, struct sonode **);
 658         int     (*sop_bind)(struct sonode *, struct sockaddr *, socklen_t,
 659                     int, cred_t *);
 660         int     (*sop_listen)(struct sonode *, int, cred_t *);
 661         int     (*sop_connect)(struct sonode *, struct sockaddr *,
 662                     socklen_t, int, int, cred_t *);
 663         int     (*sop_recvmsg)(struct sonode *, struct msghdr *,
 664                     struct uio *, cred_t *);
 665         int     (*sop_sendmsg)(struct sonode *, struct msghdr *,
 666                     struct uio *, cred_t *);
 667         int     (*sop_sendmblk)(struct sonode *, struct msghdr *, int,
 668                     cred_t *, mblk_t **);
 669         int     (*sop_getpeername)(struct sonode *, struct sockaddr *,
 670                     socklen_t *, boolean_t, cred_t *);
 671         int     (*sop_getsockname)(struct sonode *, struct sockaddr *,
 672                     socklen_t *, cred_t *);
 673         int     (*sop_shutdown)(struct sonode *, int, cred_t *);
 674         int     (*sop_getsockopt)(struct sonode *, int, int, void *,
 675                     socklen_t *, int, cred_t *);
 676         int     (*sop_setsockopt)(struct sonode *, int, int, const void *,
 677                     socklen_t, cred_t *);
 678         int     (*sop_ioctl)(struct sonode *, int, intptr_t, int,
 679                     cred_t *, int32_t *);
 680         int     (*sop_poll)(struct sonode *, short, int, short *,
 681                     struct pollhead **);
 682         int     (*sop_close)(struct sonode *, int, cred_t *);
 683 };
 684
 685 #define SOP_INIT(so, flag, cr, flags)   \
 686         ((so)->so_ops->sop_init((so), (flag), (cr), (flags)))
 687 #define SOP_ACCEPT(so, fflag, cr, nsop) \
 688         ((so)->so_ops->sop_accept((so), (fflag), (cr), (nsop)))
 689 #define SOP_BIND(so, name, namelen, flags, cr)  \
 690         ((so)->so_ops->sop_bind((so), (name), (namelen), (flags), (cr)))
 691 #define SOP_LISTEN(so, backlog, cr)     \
 692         ((so)->so_ops->sop_listen((so), (backlog), (cr)))
 693 #define SOP_CONNECT(so, name, namelen, fflag, flags, cr)        \
 694         ((so)->so_ops->sop_connect((so), (name), (namelen), (fflag), (flags), \
 695         (cr)))
 696 #define SOP_RECVMSG(so, msg, uiop, cr)  \
 697         ((so)->so_ops->sop_recvmsg((so), (msg), (uiop), (cr)))
 698 #define SOP_SENDMSG(so, msg, uiop, cr)  \
 699         ((so)->so_ops->sop_sendmsg((so), (msg), (uiop), (cr)))
 700 #define SOP_SENDMBLK(so, msg, size, cr, mpp)    \
 701         ((so)->so_ops->sop_sendmblk((so), (msg), (size), (cr), (mpp)))
 702 #define SOP_GETPEERNAME(so, addr, addrlen, accept, cr)  \
 703         ((so)->so_ops->sop_getpeername((so), (addr), (addrlen), (accept), (cr)))
 704 #define SOP_GETSOCKNAME(so, addr, addrlen, cr)  \
 705         ((so)->so_ops->sop_getsockname((so), (addr), (addrlen), (cr)))
 706 #define SOP_SHUTDOWN(so, how, cr)       \
 707         ((so)->so_ops->sop_shutdown((so), (how), (cr)))
 708 #define SOP_GETSOCKOPT(so, level, optionname, optval, optlenp, flags, cr) \
 709         ((so)->so_ops->sop_getsockopt((so), (level), (optionname),      \
 710             (optval), (optlenp), (flags), (cr)))
 711 #define SOP_SETSOCKOPT(so, level, optionname, optval, optlen, cr)       \
 712         ((so)->so_ops->sop_setsockopt((so), (level), (optionname),      \
 713             (optval), (optlen), (cr)))
 714 #define SOP_IOCTL(so, cmd, arg, mode, cr, rvalp)        \
 715         ((so)->so_ops->sop_ioctl((so), (cmd), (arg), (mode), (cr), (rvalp)))
 716 #define SOP_POLL(so, events, anyyet, reventsp, phpp) \
 717         ((so)->so_ops->sop_poll((so), (events), (anyyet), (reventsp), (phpp)))
 718 #define SOP_CLOSE(so, flag, cr) \
 719         ((so)->so_ops->sop_close((so), (flag), (cr)))
 720
 721 #endif /* defined(_KERNEL) || defined(_KMEMUSER) */
 722
 723 #ifdef _KERNEL
 724
 725 #define ISALIGNED_cmsghdr(addr) \
 726                 (((uintptr_t)(addr) & (_CMSG_HDR_ALIGNMENT - 1)) == 0)
 727
 728 #define ROUNDUP_cmsglen(len) \
 729         (((len) + _CMSG_HDR_ALIGNMENT - 1) & ~(_CMSG_HDR_ALIGNMENT - 1))
 730
 731 #define IS_NON_STREAM_SOCK(vp) \
 732         ((vp)->v_type == VSOCK && (vp)->v_stream == NULL)
 733 /*
 734  * Macros that operate on struct cmsghdr.
 735  * Used in parsing msg_control.
 736  * The CMSG_VALID macro does not assume that the last option buffer is padded.
 737  */
 738 #define CMSG_NEXT(cmsg)                                         \
 739         (struct cmsghdr *)((uintptr_t)(cmsg) +                  \
 740             ROUNDUP_cmsglen((cmsg)->cmsg_len))
 741 #define CMSG_CONTENT(cmsg)      (&((cmsg)[1]))
 742 #define CMSG_CONTENTLEN(cmsg)   ((cmsg)->cmsg_len - sizeof (struct cmsghdr))
 743 #define CMSG_VALID(cmsg, start, end)                                    \
 744         (ISALIGNED_cmsghdr(cmsg) &&                                     \
 745         ((uintptr_t)(cmsg) >= (uintptr_t)(start)) &&                    \
 746         ((uintptr_t)(cmsg) < (uintptr_t)(end)) &&                       \
 747         ((ssize_t)(cmsg)->cmsg_len >= sizeof (struct cmsghdr)) &&       \
 748         ((uintptr_t)(cmsg) + (cmsg)->cmsg_len <= (uintptr_t)(end)))
 749
 750 /*
 751  * Maximum size of any argument that is copied in (addresses, options,
 752  * access rights). MUST be at least MAXPATHLEN + 3.
 753  * BSD and SunOS 4.X limited this to MLEN or MCLBYTES.
 754  */
 755 #define SO_MAXARGSIZE   8192
 756
 757 /*
 758  * Convert between vnode and sonode
 759  */
 760 #define VTOSO(vp)       ((struct sonode *)((vp)->v_data))
 761 #define SOTOV(sp)       ((sp)->so_vnode)
 762
 763 /*
 764  * Internal flags for sobind()
 765  */
 766 #define _SOBIND_REBIND          0x01    /* Bind to existing local address */
 767 #define _SOBIND_UNSPEC          0x02    /* Bind to unspecified address */
 768 #define _SOBIND_LOCK_HELD       0x04    /* so_excl_lock held by caller */
 769 #define _SOBIND_NOXLATE         0x08    /* No addr translation for AF_UNIX */
 770 #define _SOBIND_XPG4_2          0x10    /* xpg4.2 semantics */
 771 #define _SOBIND_SOCKBSD         0x20    /* BSD semantics */
 772 #define _SOBIND_LISTEN          0x40    /* Make into SS_ACCEPTCONN */
 773 #define _SOBIND_SOCKETPAIR      0x80    /* Internal flag for so_socketpair() */
 774                                         /* to enable listen with backlog = 1 */
 775
 776 /*
 777  * Internal flags for sounbind()
 778  */
 779 #define _SOUNBIND_REBIND        0x01    /* Don't clear fields - will rebind */
 780
 781 /*
 782  * Internal flags for soconnect()
 783  */
 784 #define _SOCONNECT_NOXLATE      0x01    /* No addr translation for AF_UNIX */
 785 #define _SOCONNECT_DID_BIND     0x02    /* Unbind when connect fails */
 786 #define _SOCONNECT_XPG4_2       0x04    /* xpg4.2 semantics */
 787
 788 /*
 789  * Internal flags for sodisconnect()
 790  */
 791 #define _SODISCONNECT_LOCK_HELD 0x01    /* so_excl_lock held by caller */
 792
 793 /*
 794  * Internal flags for sotpi_getsockopt().
 795  */
 796 #define _SOGETSOCKOPT_XPG4_2    0x01    /* xpg4.2 semantics */
 797
 798 /*
 799  * Internal flags for soallocproto*()
 800  */
 801 #define _ALLOC_NOSLEEP          0       /* Don't sleep for memory */
 802 #define _ALLOC_INTR             1       /* Sleep until interrupt */
 803 #define _ALLOC_SLEEP            2       /* Sleep forever */
 804
 805 /*
 806  * Internal structure for handling AF_UNIX file descriptor passing
 807  */
 808 struct fdbuf {
 809         int             fd_size;        /* In bytes, for kmem_free */
 810         int             fd_numfd;       /* Number of elements below */
 811         char            *fd_ebuf;       /* Extra buffer to free  */
 812         int             fd_ebuflen;
 813         frtn_t          fd_frtn;
 814         struct file     *fd_fds[1];     /* One or more */
 815 };
 816 #define FDBUF_HDRSIZE   (sizeof (struct fdbuf) - sizeof (struct file *))
 817
 818 /*
 819  * Variable that can be patched to set what version of socket socket()
 820  * will create.
 821  */
 822 extern int so_default_version;
 823
 824 #ifdef DEBUG
 825 /* Turn on extra testing capabilities */
 826 #define SOCK_TEST
 827 #endif /* DEBUG */
 828
 829 #ifdef DEBUG
 830 char    *pr_state(uint_t, uint_t);
 831 char    *pr_addr(int, struct sockaddr *, t_uscalar_t);
 832 int     so_verify_oobstate(struct sonode *);
 833 #endif /* DEBUG */
 834
 835 /*
 836  * DEBUG macros
 837  */
 838 #if defined(DEBUG)
 839 #define SOCK_DEBUG
 840
 841 extern int sockdebug;
 842 extern int sockprinterr;
 843
 844 #define eprint(args)    printf args
 845 #define eprintso(so, args) \
 846 { if (sockprinterr && ((so)->so_options & SO_DEBUG)) printf args; }
 847 #define eprintline(error)                                       \
 848 {                                                               \
 849         if (error != EINTR && (sockprinterr || sockdebug > 0))  \
 850                 printf("socket error %d: line %d file %s\n",    \
 851                         (error), __LINE__, __FILE__);           \
 852 }
 853
 854 #define eprintsoline(so, error)                                 \
 855 { if (sockprinterr && ((so)->so_options & SO_DEBUG))            \
 856         printf("socket(%p) error %d: line %d file %s\n",        \
 857                 (void *)(so), (error), __LINE__, __FILE__);     \
 858 }
 859 #define dprint(level, args)     { if (sockdebug > (level)) printf args; }
 860 #define dprintso(so, level, args) \
 861 { if (sockdebug > (level) && ((so)->so_options & SO_DEBUG)) printf args; }
 862
 863 #else /* define(DEBUG) */
 864
 865 #define eprint(args)            {}
 866 #define eprintso(so, args)      {}
 867 #define eprintline(error)       {}
 868 #define eprintsoline(so, error) {}
 869 #define dprint(level, args)     {}
 870 #define dprintso(so, level, args) {}
 871
 872 #endif /* defined(DEBUG) */
 873
 874 extern struct vfsops                    sock_vfsops;
 875 extern struct vnodeops                  *socket_vnodeops;
 876 extern const struct fs_operation_def    socket_vnodeops_template[];
 877
 878 extern dev_t                            sockdev;
 879
 880 extern krwlock_t                        sockconf_lock;
 881
 882 /*
 883  * sockfs functions
 884  */
 885 extern int      sock_getmsg(vnode_t *, struct strbuf *, struct strbuf *,
 886                         uchar_t *, int *, int, rval_t *);
 887 extern int      sock_putmsg(vnode_t *, struct strbuf *, struct strbuf *,
 888                         uchar_t, int, int);
 889 extern int      sogetvp(char *, vnode_t **, int);
 890 extern int      sockinit(int, char *);
 891 extern int      solookup(int, int, int, struct sockparams **);
 892 extern void     so_lock_single(struct sonode *);
 893 extern void     so_unlock_single(struct sonode *, int);
 894 extern int      so_lock_read(struct sonode *, int);
 895 extern int      so_lock_read_intr(struct sonode *, int);
 896 extern void     so_unlock_read(struct sonode *);
 897 extern void     *sogetoff(mblk_t *, t_uscalar_t, t_uscalar_t, uint_t);
 898 extern void     so_getopt_srcaddr(void *, t_uscalar_t,
 899                         void **, t_uscalar_t *);
 900 extern int      so_getopt_unix_close(void *, t_uscalar_t);
 901 extern void     fdbuf_free(struct fdbuf *);
 902 extern mblk_t   *fdbuf_allocmsg(int, struct fdbuf *);
 903 extern int      fdbuf_create(void *, int, struct fdbuf **);
 904 extern void     so_closefds(void *, t_uscalar_t, int, int);
 905 extern int      so_getfdopt(void *, t_uscalar_t, int, void **, int *);
 906 t_uscalar_t     so_optlen(void *, t_uscalar_t, int);
 907 extern void     so_cmsg2opt(void *, t_uscalar_t, int, mblk_t *);
 908 extern t_uscalar_t
 909                 so_cmsglen(mblk_t *, void *, t_uscalar_t, int);
 910 extern int      so_opt2cmsg(mblk_t *, void *, t_uscalar_t, int,
 911                         void *, t_uscalar_t);
 912 extern void     soisconnecting(struct sonode *);
 913 extern void     soisconnected(struct sonode *);
 914 extern void     soisdisconnected(struct sonode *, int);
 915 extern void     socantsendmore(struct sonode *);
 916 extern void     socantrcvmore(struct sonode *);
 917 extern void     soseterror(struct sonode *, int);
 918 extern int      sogeterr(struct sonode *, boolean_t);
 919 extern int      sowaitconnected(struct sonode *, int, int);
 920
 921 extern ssize_t  soreadfile(file_t *, uchar_t *, u_offset_t, int *, size_t);
 922 extern void     *sock_kstat_init(zoneid_t);
 923 extern void     sock_kstat_fini(zoneid_t, void *);
 924 extern struct sonode *getsonode(int, int *, file_t **);
 925 /*
 926  * Function wrappers (mostly around the sonode switch) for
 927  * backward compatibility.
 928  */
 929 extern int      soaccept(struct sonode *, int, struct sonode **);
 930 extern int      sobind(struct sonode *, struct sockaddr *, socklen_t,
 931                     int, int);
 932 extern int      solisten(struct sonode *, int);
 933 extern int      soconnect(struct sonode *, struct sockaddr *, socklen_t,
 934                     int, int);
 935 extern int      sorecvmsg(struct sonode *, struct nmsghdr *, struct uio *);
 936 extern int      sosendmsg(struct sonode *, struct nmsghdr *, struct uio *);
 937 extern int      soshutdown(struct sonode *, int);
 938 extern int      sogetsockopt(struct sonode *, int, int, void *, socklen_t *,
 939                     int);
 940 extern int      sosetsockopt(struct sonode *, int, int, const void *,
 941                     t_uscalar_t);
 942
 943 extern struct sonode    *socreate(struct sockparams *, int, int, int, int,
 944                             int *);
 945
 946 extern int      so_copyin(const void *, void *, size_t, int);
 947 extern int      so_copyout(const void *, void *, size_t, int);
 948
 949 #endif
 950
 951 /*
 952  * Internal structure for obtaining sonode information from the socklist.
 953  * These types match those corresponding in the sonode structure.
 954  * This is not a published interface, and may change at any time.
 955  */
 956 struct sockinfo {
 957         uint_t          si_size;                /* real length of this struct */
 958         short           si_family;
 959         short           si_type;
 960         ushort_t        si_flag;
 961         uint_t          si_state;
 962         uint_t          si_ux_laddr_sou_magic;
 963         uint_t          si_ux_faddr_sou_magic;
 964         t_scalar_t      si_serv_type;
 965         t_uscalar_t     si_laddr_soa_len;
 966         t_uscalar_t     si_faddr_soa_len;
 967         uint16_t        si_laddr_family;
 968         uint16_t        si_faddr_family;
 969         char            si_laddr_sun_path[MAXPATHLEN + 1]; /* NULL terminated */
 970         char            si_faddr_sun_path[MAXPATHLEN + 1];
 971         boolean_t       si_faddr_noxlate;
 972         zoneid_t        si_szoneid;
 973 };
 974
 975 /*
 976  * Subcodes for sockconf() system call
 977  */
 978 #define SOCKCONFIG_ADD_SOCK             0
 979 #define SOCKCONFIG_REMOVE_SOCK          1
 980 #define SOCKCONFIG_ADD_FILTER           2
 981 #define SOCKCONFIG_REMOVE_FILTER        3
 982 #define SOCKCONFIG_GET_SOCKTABLE        4
 983
 984 /*
 985  * Data structures for configuring socket filters.
 986  */
 987
 988 /*
 989  * Placement hint for automatic filters
 990  */
 991 typedef enum {
 992         SOF_HINT_NONE,
 993         SOF_HINT_TOP,
 994         SOF_HINT_BOTTOM,
 995         SOF_HINT_BEFORE,
 996         SOF_HINT_AFTER
 997 } sof_hint_t;
 998
 999 /*
1000  * Socket tuple. Used by sockconfig_filter_props to list socket
1001  * types of interest.
1002  */
1003 typedef struct sof_socktuple {
1004         int     sofst_family;
1005         int     sofst_type;
1006         int     sofst_protocol;
1007 } sof_socktuple_t;
1008
1009 /*
1010  * Socket filter properties used by sockconfig() system call.
1011  */
1012 struct sockconfig_filter_props {
1013         char            *sfp_modname;
1014         boolean_t       sfp_autoattach;
1015         sof_hint_t      sfp_hint;
1016         char            *sfp_hintarg;
1017         uint_t          sfp_socktuple_cnt;
1018         sof_socktuple_t *sfp_socktuple;
1019 };
1020
1021 /*
1022  * Data structures for the in-kernel socket configuration table.
1023  */
1024 typedef struct sockconfig_socktable_entry {
1025         int             se_family;
1026         int             se_type;
1027         int             se_protocol;
1028         int             se_refcnt;
1029         int             se_flags;
1030         char            se_modname[MODMAXNAMELEN];
1031         char            se_strdev[MAXPATHLEN];
1032 } sockconfig_socktable_entry_t;
1033
1034 typedef struct sockconfig_socktable {
1035         uint_t          num_of_entries;
1036         sockconfig_socktable_entry_t *st_entries;
1037 } sockconfig_socktable_t;
1038
1039 #ifdef  _SYSCALL32
1040
1041 typedef struct sof_socktuple32 {
1042         int32_t sofst_family;
1043         int32_t sofst_type;
1044         int32_t sofst_protocol;
1045 } sof_socktuple32_t;
1046
1047 struct sockconfig_filter_props32 {
1048         caddr32_t       sfp_modname;
1049         boolean_t       sfp_autoattach;
1050         sof_hint_t      sfp_hint;
1051         caddr32_t       sfp_hintarg;
1052         uint32_t        sfp_socktuple_cnt;
1053         caddr32_t       sfp_socktuple;
1054 };
1055
1056 typedef struct sockconfig_socktable32 {
1057         uint_t          num_of_entries;
1058         caddr32_t       st_entries;
1059 } sockconfig_socktable32_t;
1060
1061 #endif  /* _SYSCALL32 */
1062
1063 #define SOCKMOD_PATH    "socketmod"     /* dir where sockmods are stored */
1064
1065 #ifdef  __cplusplus
1066 }
1067 #endif
1068
1069 #endif  /* _SYS_SOCKETVAR_H */