sys/net/netmsg.h

   1 /*
   2  * Copyright (c) 2003 Jeffrey Hsu
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Jeffrey M. Hsu.
  16  * 4. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * $DragonFly: src/sys/net/netmsg.h,v 1.10 2008/10/27 02:56:30 sephe Exp $
  31  */
  32
  33 #ifndef _NET_NETMSG_H_
  34 #define _NET_NETMSG_H_
  35
  36 #ifndef _SYS_THREAD_H_
  37 #include <sys/thread.h>
  38 #endif
  39 #ifndef _SYS_PROTOSW_H_
  40 #include <sys/protosw.h>
  41 #endif
  42
  43 struct pktinfo;
  44
  45 typedef void (*netisr_fn_t)(netmsg_t);
  46 typedef void (*netisr_ru_t)(void);
  47 typedef void (*netisr_hashfn_t)(struct mbuf **, int);
  48 typedef void (*netisr_hashck_t)(struct mbuf *, const struct pktinfo *);
  49
  50 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
  51
  52 /*
  53  * The base netmsg prefixes all netmsgs and includes an embedded LWKT
  54  * message.
  55  */
  56 struct netmsg_base {
  57         struct lwkt_msg         lmsg;
  58         netisr_fn_t             nm_dispatch;
  59         struct socket           *nm_so;
  60 };
  61
  62 #define MSGF_IGNSOPORT          MSGF_USER0      /* don't check so_port */
  63 #define MSGF_PROTO1             MSGF_USER1      /* protocol specific */
  64
  65 typedef struct netmsg_base *netmsg_base_t;
  66
  67 /*
  68  * NETISR messages
  69  *
  70  * NOTE:
  71  * - netmsg_packet is embedded in mbufs.
  72  * - netmsg_pru_send is embedded in mbufs.
  73  * - netmsg_inarp is embedded in mbufs.
  74  * - netmsg_ctlinput is embedded in mbufs.
  75  * - netmsg_genpkt is embedded in mbufs.
  76  */
  77 TAILQ_HEAD(notifymsglist, netmsg_so_notify);
  78
  79 struct netmsg_packet {
  80         struct netmsg_base      base;
  81         struct mbuf             *nm_packet;
  82         int                     nm_nxt;
  83 };
  84
  85 struct netmsg_inarp {
  86         struct netmsg_base      base;
  87         struct mbuf             *m;
  88         in_addr_t               saddr;
  89         in_addr_t               taddr;
  90         in_addr_t               myaddr;
  91 };
  92
  93 struct netmsg_ctlinput {
  94         struct netmsg_base      base;
  95         struct mbuf             *m;
  96         int                     cmd;
  97         int                     hlen;
  98         int                     proto;
  99 };
 100
 101 struct netmsg_genpkt {
 102         struct netmsg_base      base;
 103         struct mbuf             *m;
 104         void                    *arg1;
 105         u_long                  arg2;
 106 };
 107
 108 struct netmsg_pr_timeout {
 109         struct netmsg_base      base;
 110 };
 111
 112 struct netmsg_so_notify;
 113 typedef __boolean_t (*msg_predicate_fn_t)(struct netmsg_so_notify *);
 114
 115 struct netmsg_so_notify {
 116         struct netmsg_base      base;
 117         msg_predicate_fn_t      nm_predicate;
 118         int                     nm_fflags; /* flags e.g. FNONBLOCK */
 119         int                     nm_etype;  /* receive or send event */
 120         TAILQ_ENTRY(netmsg_so_notify) nm_list;
 121 };
 122
 123 struct netmsg_so_notify_abort {
 124         struct netmsg_base      base;
 125         struct netmsg_so_notify *nm_notifymsg;
 126 };
 127
 128 #define NM_REVENT       0x1             /* event on receive buffer */
 129 #define NM_SEVENT       0x2             /* event on send buffer */
 130
 131 /*
 132  * User protocol requests messages.
 133  */
 134 struct netmsg_pru_abort {
 135         struct netmsg_base      base;
 136 };
 137
 138 struct netmsg_pru_accept {
 139         struct netmsg_base      base;
 140         struct sockaddr         **nm_nam;
 141 };
 142
 143 struct netmsg_pru_attach {
 144         struct netmsg_base      base;
 145         int                     nm_proto;
 146         struct pru_attach_info  *nm_ai;
 147 };
 148
 149 struct netmsg_pru_bind {
 150         struct netmsg_base      base;
 151         struct sockaddr         *nm_nam;
 152         struct thread           *nm_td;
 153         int                     nm_flags;       /* PRUB_ */
 154 };
 155
 156 #define PRUB_RELINK             0x0001
 157
 158 struct netmsg_pru_connect {
 159         struct netmsg_base      base;
 160         struct sockaddr         *nm_nam;
 161         struct thread           *nm_td;
 162         struct mbuf             *nm_m;          /* connect with send */
 163         int                     nm_sndflags;    /* connect with send, PRUS_ */
 164         int                     nm_flags;       /* message control */
 165 };
 166
 167 #define PRUC_RECONNECT          0x0001          /* thread port change */
 168 #define PRUC_PUSH               0x0004          /* call tcp_output */
 169 #define PRUC_ASYNC              0x0010
 170 #define PRUC_HELDTD             0x0020
 171 #define PRUC_HASLADDR           0x0040
 172
 173 struct netmsg_pru_connect2 {
 174         struct netmsg_base      base;
 175         struct socket           *nm_so1;
 176         struct socket           *nm_so2;
 177 };
 178
 179 struct netmsg_pru_control {
 180         struct netmsg_base      base;
 181         u_long                  nm_cmd;
 182         caddr_t                 nm_data;
 183         struct ifnet            *nm_ifp;
 184         struct thread           *nm_td;
 185 };
 186
 187 struct netmsg_pru_detach {
 188         struct netmsg_base      base;
 189 };
 190
 191 struct netmsg_pru_disconnect {
 192         struct netmsg_base      base;
 193 };
 194
 195 struct netmsg_pru_listen {
 196         struct netmsg_base      base;
 197         struct thread           *nm_td;
 198         int                     nm_flags;       /* PRUL_xxx */
 199 };
 200
 201 #define PRUL_RELINK             0x1
 202
 203 struct netmsg_pru_peeraddr {
 204         struct netmsg_base      base;
 205         struct sockaddr         **nm_nam;
 206 };
 207
 208 struct netmsg_pru_rcvd {
 209         struct netmsg_base      base;
 210         int                     nm_flags;
 211         int                     nm_pru_flags;   /* PRUR_xxx */
 212 };
 213
 214 #define PRUR_ASYNC              0x1
 215 #define PRUR_DEAD               0x2
 216
 217 struct netmsg_pru_rcvoob {
 218         struct netmsg_base      base;
 219         struct mbuf             *nm_m;
 220         int                     nm_flags;
 221 };
 222
 223 struct netmsg_pru_send {
 224         struct netmsg_base      base;
 225         int                     nm_flags;       /* PRUS_xxx */
 226         int                     nm_priv;        /* proto priv. */
 227         struct mbuf             *nm_m;
 228         struct sockaddr         *nm_addr;
 229         struct mbuf             *nm_control;
 230         struct thread           *nm_td;
 231 };
 232
 233 #define PRUS_OOB                0x1
 234 #define PRUS_EOF                0x2
 235 #define PRUS_MORETOCOME         0x4
 236 #define PRUS_NAMALLOC           0x8
 237 #define PRUS_NOREPLY            0x10
 238 #define PRUS_DONTROUTE          0x20
 239 #define PRUS_FREEADDR           0x40
 240 #define PRUS_HELDTD             0x80
 241
 242 struct netmsg_pru_sense {
 243         struct netmsg_base      base;
 244         struct stat             *nm_stat;
 245 };
 246
 247 struct netmsg_pru_shutdown {
 248         struct netmsg_base      base;
 249 };
 250
 251 struct netmsg_pru_sockaddr {
 252         struct netmsg_base      base;
 253         struct sockaddr         **nm_nam;
 254 };
 255
 256 struct netmsg_pru_sosend {
 257         struct netmsg_base      base;
 258         struct sockaddr         *nm_addr;
 259         struct uio              *nm_uio;
 260         struct mbuf             *nm_top;
 261         struct mbuf             *nm_control;
 262         int                     nm_flags;
 263         struct thread           *nm_td;
 264 };
 265
 266 struct netmsg_pru_soreceive {
 267         struct netmsg_base      base;
 268         struct sockaddr         *nm_addr;
 269         struct sockaddr         **nm_paddr;
 270         struct uio              *nm_uio;
 271         struct sockbuf          *nm_sio;
 272         struct mbuf             **nm_controlp;
 273         int                     *nm_flagsp;
 274 };
 275
 276 struct netmsg_pr_ctloutput {
 277         struct netmsg_base      base;
 278         int                     nm_flags;       /* PRCO_xx */
 279         struct sockopt          *nm_sopt;
 280 };
 281
 282 #define PRCO_HELDTD             0x1
 283
 284 struct netmsg_pr_ctlinput {
 285         struct netmsg_base      base;
 286         int                     nm_cmd;
 287         int                     nm_direct;
 288         struct sockaddr         *nm_arg;
 289         void                    *nm_extra;
 290 };
 291
 292 /*
 293  * Union of all possible netmsgs.  Note that when a netmsg is sent the
 294  * actual allocated storage is likely only the size of the particular
 295  * class of message, and not sizeof(union netmsg).
 296  */
 297 union netmsg {
 298         struct lwkt_msg                 lmsg;           /* base embedded */
 299         struct netmsg_base              base;           /* base embedded */
 300
 301         struct netmsg_packet            packet;         /* mbuf embedded */
 302         struct netmsg_pr_timeout        timeout;
 303         struct netmsg_so_notify         notify;
 304         struct netmsg_so_notify_abort   notify_abort;
 305
 306         struct netmsg_pr_ctloutput      ctloutput;
 307         struct netmsg_pr_ctlinput       ctlinput;
 308
 309         struct netmsg_pru_abort         abort;
 310         struct netmsg_pru_accept        accept;         /* synchronous */
 311         struct netmsg_pru_attach        attach;
 312         struct netmsg_pru_bind          bind;
 313         struct netmsg_pru_connect       connect;
 314         struct netmsg_pru_connect2      connect2;
 315         struct netmsg_pru_control       control;        /* synchronous */
 316         struct netmsg_pru_detach        detach;
 317         struct netmsg_pru_disconnect    disconnect;
 318         struct netmsg_pru_listen        listen;
 319         struct netmsg_pru_peeraddr      peeraddr;
 320         struct netmsg_pru_rcvd          rcvd;
 321         struct netmsg_pru_rcvoob        rcvoob;
 322         struct netmsg_pru_send          send;
 323         struct netmsg_pru_sense         sense;
 324         struct netmsg_pru_shutdown      shutdown;
 325         struct netmsg_pru_sockaddr      sockaddr;
 326         struct netmsg_pru_sosend        sosend;         /* synchronous */
 327         struct netmsg_pru_soreceive     soreceive;      /* synchronous */
 328 };
 329
 330 #endif  /* _KERNEL || _KERNEL_STRUCTURES */
 331
 332 #endif  /* !_NET_NETMSG_H_ */