usr/src/uts/common/sys/sockfilter.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  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24
  25 #ifndef _SYS_SOCKFILTER_H
  26 #define _SYS_SOCKFILTER_H
  27
  28 #include <sys/cred.h>
  29 #include <sys/errno.h>
  30 #include <sys/socket.h>
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * Opaque socket filter handle
  38  */
  39 typedef struct __sof_handle     *sof_handle_t;
  40
  41 /*
  42  * Return values for callback functions.
  43  *
  44  * A - Attach (passive/active) only
  45  * P - Passive attach only
  46  */
  47 typedef enum {
  48         SOF_RVAL_DEFER = -3,            /* defer notification (P) */
  49         SOF_RVAL_DETACH = -2,           /* detach filter, continue proc. (A) */
  50         SOF_RVAL_CONTINUE = -1,         /* continue processing */
  51         SOF_RVAL_RETURN = 0,            /* stop proc, does not return error */
  52         SOF_RVAL_EINVAL = EINVAL,       /* stop proc., returns error */
  53         SOF_RVAL_EACCES = EACCES,       /* stop proc., returns error */
  54         SOF_RVAL_ENOMEM = ENOMEM,       /* stop proc., returns error */
  55         SOF_RVAL_ECONNABORTED = ECONNABORTED /* stop proc, returns error */
  56 } sof_rval_t;
  57
  58 /*
  59  * Events generated by the sofop_notify callback.
  60  */
  61 typedef enum {                          /* socket ... */
  62         SOF_EV_CLOSING,                 /* ... is closing */
  63         SOF_EV_CONNECTED,               /* ... is connected */
  64         SOF_EV_CONNECTFAILED,           /* ... failed to connect */
  65         SOF_EV_DISCONNECTED,            /* ... was disconnected */
  66         SOF_EV_CANTRECVMORE,            /* ... cannot receive any more data */
  67         SOF_EV_CANTSENDMORE,            /* ... cannot send any more data */
  68         SOF_EV_INJECT_DATA_IN_OK,       /* ... has cleared rcv flow ctrl */
  69         SOF_EV_INJECT_DATA_OUT_OK,      /* ... has cleared snd flow ctrl */
  70 } sof_event_t;
  71
  72 /* Filter callbacks */
  73 typedef sof_rval_t      (*sof_attach_active_fn_t)(sof_handle_t, int, int, int,
  74     cred_t *, void **);
  75 typedef sof_rval_t      (*sof_attach_passive_fn_t)(sof_handle_t, sof_handle_t,
  76     void *, struct sockaddr *, socklen_t, struct sockaddr *, socklen_t,
  77     void **);
  78 typedef void            (*sof_detach_fn_t)(sof_handle_t, void *, cred_t *);
  79 typedef mblk_t          *(*sof_data_in_fn_t)(sof_handle_t, void *, mblk_t *,
  80     int, size_t *);
  81 typedef mblk_t          *(*sof_data_in_proc_fn_t)(sof_handle_t, void *,
  82     mblk_t *, cred_t *, size_t *);
  83 typedef mblk_t          *(*sof_data_out_fn_t)(sof_handle_t, void *, mblk_t *,
  84     struct nmsghdr *, cred_t *, sof_rval_t *);
  85 typedef sof_rval_t      (*sof_bind_fn_t)(sof_handle_t, void *,
  86     struct sockaddr *, socklen_t *, cred_t *);
  87 typedef sof_rval_t      (*sof_listen_fn_t)(sof_handle_t, void *, int *,
  88     cred_t *);
  89 typedef sof_rval_t      (*sof_accept_fn_t)(sof_handle_t, void *, cred_t *);
  90 typedef sof_rval_t      (*sof_connect_fn_t)(sof_handle_t, void *,
  91     struct sockaddr *, socklen_t *, cred_t *);
  92 typedef sof_rval_t      (*sof_shutdown_fn_t)(sof_handle_t, void *, int *,
  93     cred_t *);
  94 typedef sof_rval_t      (*sof_getsockname_fn_t)(sof_handle_t, void *,
  95     struct sockaddr *, socklen_t *, cred_t *);
  96 typedef sof_rval_t      (*sof_getpeername_fn_t)(sof_handle_t, void *,
  97     struct sockaddr *, socklen_t *, cred_t *);
  98 typedef sof_rval_t              (*sof_setsockopt_fn_t)(sof_handle_t, void *,
  99     int, int, void *, socklen_t *, cred_t *);
 100 typedef sof_rval_t      (*sof_getsockopt_fn_t)(sof_handle_t, void *,
 101     int, int, void *, socklen_t *, cred_t *);
 102 typedef sof_rval_t      (*sof_ioctl_fn_t)(sof_handle_t, void *, int, intptr_t,
 103     int, int32_t *, cred_t *);
 104 typedef void            (*sof_mblk_prop_fn_t)(sof_handle_t, void *, ssize_t *,
 105     ushort_t *, ushort_t *);
 106 typedef void            (*sof_notify_fn_t)(sof_handle_t, void *, sof_event_t,
 107     uintptr_t);
 108
 109 typedef struct sof_ops {
 110         sof_attach_active_fn_t  sofop_attach_active;
 111         sof_attach_passive_fn_t sofop_attach_passive;
 112         sof_detach_fn_t         sofop_detach;
 113         sof_data_in_fn_t        sofop_data_in;
 114         sof_data_in_proc_fn_t   sofop_data_in_proc;
 115         sof_data_out_fn_t       sofop_data_out;
 116         sof_bind_fn_t           sofop_bind;
 117         sof_listen_fn_t         sofop_listen;
 118         sof_connect_fn_t        sofop_connect;
 119         sof_accept_fn_t         sofop_accept;
 120         sof_shutdown_fn_t       sofop_shutdown;
 121         sof_getsockname_fn_t    sofop_getsockname;
 122         sof_getpeername_fn_t    sofop_getpeername;
 123         sof_setsockopt_fn_t     sofop_setsockopt;
 124         sof_getsockopt_fn_t     sofop_getsockopt;
 125         sof_ioctl_fn_t          sofop_ioctl;
 126         sof_mblk_prop_fn_t      sofop_mblk_prop;
 127         sof_notify_fn_t         sofop_notify;
 128 } sof_ops_t;
 129
 130 #define SOF_VERSION     1
 131
 132 extern int      sof_register(int, const char *, const sof_ops_t *, int);
 133 extern int      sof_unregister(const char *);
 134
 135 extern void     sof_newconn_ready(sof_handle_t);
 136 extern void     sof_bypass(sof_handle_t);
 137 extern void     *sof_get_cookie(sof_handle_t);
 138 extern void     *sof_cas_cookie(sof_handle_t, void *, void *);
 139 extern int      sof_inject_data_out(sof_handle_t, mblk_t *, struct nmsghdr *,
 140     boolean_t *);
 141 extern int      sof_inject_data_in(sof_handle_t, mblk_t *, size_t, int,
 142     boolean_t *);
 143 extern void     sof_rcv_flowctrl(sof_handle_t, boolean_t);
 144 extern void     sof_snd_flowctrl(sof_handle_t, boolean_t);
 145 extern boolean_t sof_newconn_move(sof_handle_t, sof_handle_t);
 146
 147 #ifdef  __cplusplus
 148 }
 149 #endif
 150
 151 #endif  /* _SYS_SOCKFILTER_H */