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  */
  76 TAILQ_HEAD(notifymsglist, netmsg_so_notify);
  77
  78 struct netmsg_packet {
  79         struct netmsg_base      base;
  80         struct mbuf             *nm_packet;
  81         int                     nm_nxt;
  82 };
  83
  84 struct netmsg_inarp {
  85         struct netmsg_base      base;
  86         struct mbuf             *m;
  87         in_addr_t               saddr;
  88         in_addr_t               taddr;
  89         in_addr_t               myaddr;
  90 };
  91
  92 struct netmsg_ctlinput {
  93         struct netmsg_base      base;
  94         struct mbuf             *m;
  95         int                     cmd;
  96         int                     hlen;
  97         int                     proto;
  98 };
  99
 100 struct netmsg_pr_timeout {
 101         struct netmsg_base      base;
 102 };
 103
 104 struct netmsg_so_notify;
 105 typedef __boolean_t (*msg_predicate_fn_t)(struct netmsg_so_notify *);
 106
 107 struct netmsg_so_notify {
 108         struct netmsg_base      base;
 109         msg_predicate_fn_t      nm_predicate;
 110         int                     nm_fflags; /* flags e.g. FNONBLOCK */
 111         int                     nm_etype;  /* receive or send event */
 112         TAILQ_ENTRY(netmsg_so_notify) nm_list;
 113 };
 114
 115 struct netmsg_so_notify_abort {
 116         struct netmsg_base      base;
 117         struct netmsg_so_notify *nm_notifymsg;
 118 };
 119
 120 #define NM_REVENT       0x1             /* event on receive buffer */
 121 #define NM_SEVENT       0x2             /* event on send buffer */
 122
 123 /*
 124  * User protocol requests messages.
 125  */
 126 struct netmsg_pru_abort {
 127         struct netmsg_base      base;
 128 };
 129
 130 struct netmsg_pru_accept {
 131         struct netmsg_base      base;
 132         struct sockaddr         **nm_nam;
 133 };
 134
 135 struct netmsg_pru_attach {
 136         struct netmsg_base      base;
 137         int                     nm_proto;
 138         struct pru_attach_info  *nm_ai;
 139 };
 140
 141 struct netmsg_pru_bind {
 142         struct netmsg_base      base;
 143         struct sockaddr         *nm_nam;
 144         struct thread           *nm_td;
 145 };
 146
 147 struct netmsg_pru_connect {
 148         struct netmsg_base      base;
 149         struct sockaddr         *nm_nam;
 150         struct thread           *nm_td;
 151         struct mbuf             *nm_m;          /* connect with send */
 152         int                     nm_sndflags;    /* connect with send, PRUS_ */
 153         int                     nm_flags;       /* message control */
 154 };
 155
 156 #define PRUC_RECONNECT          0x0001          /* thread port change */
 157 #define PRUC_PUSH               0x0004          /* call tcp_output */
 158 #define PRUC_ASYNC              0x0010
 159 #define PRUC_HELDTD             0x0020
 160 #define PRUC_HASLADDR           0x0040
 161
 162 struct netmsg_pru_connect2 {
 163         struct netmsg_base      base;
 164         struct socket           *nm_so1;
 165         struct socket           *nm_so2;
 166 };
 167
 168 struct netmsg_pru_control {
 169         struct netmsg_base      base;
 170         u_long                  nm_cmd;
 171         caddr_t                 nm_data;
 172         struct ifnet            *nm_ifp;
 173         struct thread           *nm_td;
 174 };
 175
 176 struct netmsg_pru_detach {
 177         struct netmsg_base      base;
 178 };
 179
 180 struct netmsg_pru_disconnect {
 181         struct netmsg_base      base;
 182 };
 183
 184 struct netmsg_pru_listen {
 185         struct netmsg_base      base;
 186         struct thread           *nm_td;
 187         int                     nm_flags;       /* PRUL_xxx */
 188 };
 189
 190 #define PRUL_RELINK             0x1
 191
 192 struct netmsg_pru_peeraddr {
 193         struct netmsg_base      base;
 194         struct sockaddr         **nm_nam;
 195 };
 196
 197 struct netmsg_pru_rcvd {
 198         struct netmsg_base      base;
 199         int                     nm_flags;
 200         int                     nm_pru_flags;   /* PRUR_xxx */
 201 };
 202
 203 #define PRUR_ASYNC              0x1
 204 #define PRUR_DEAD               0x2
 205
 206 struct netmsg_pru_rcvoob {
 207         struct netmsg_base      base;
 208         struct mbuf             *nm_m;
 209         int                     nm_flags;
 210 };
 211
 212 struct netmsg_pru_send {
 213         struct netmsg_base      base;
 214         int                     nm_flags;       /* PRUS_xxx */
 215         int                     nm_priv;        /* proto priv. */
 216         struct mbuf             *nm_m;
 217         struct sockaddr         *nm_addr;
 218         struct mbuf             *nm_control;
 219         struct thread           *nm_td;
 220 };
 221
 222 #define PRUS_OOB                0x1
 223 #define PRUS_EOF                0x2
 224 #define PRUS_MORETOCOME         0x4
 225 #define PRUS_NAMALLOC           0x8
 226 #define PRUS_NOREPLY            0x10
 227 #define PRUS_DONTROUTE          0x20
 228 #define PRUS_FREEADDR           0x40
 229 #define PRUS_HELDTD             0x80
 230
 231 struct netmsg_pru_sense {
 232         struct netmsg_base      base;
 233         struct stat             *nm_stat;
 234 };
 235
 236 struct netmsg_pru_shutdown {
 237         struct netmsg_base      base;
 238 };
 239
 240 struct netmsg_pru_sockaddr {
 241         struct netmsg_base      base;
 242         struct sockaddr         **nm_nam;
 243 };
 244
 245 struct netmsg_pru_sosend {
 246         struct netmsg_base      base;
 247         struct sockaddr         *nm_addr;
 248         struct uio              *nm_uio;
 249         struct mbuf             *nm_top;
 250         struct mbuf             *nm_control;
 251         int                     nm_flags;
 252         struct thread           *nm_td;
 253 };
 254
 255 struct netmsg_pru_soreceive {
 256         struct netmsg_base      base;
 257         struct sockaddr         *nm_addr;
 258         struct sockaddr         **nm_paddr;
 259         struct uio              *nm_uio;
 260         struct sockbuf          *nm_sio;
 261         struct mbuf             **nm_controlp;
 262         int                     *nm_flagsp;
 263 };
 264
 265 struct netmsg_pr_ctloutput {
 266         struct netmsg_base      base;
 267         struct sockopt          *nm_sopt;
 268 };
 269
 270 struct netmsg_pr_ctlinput {
 271         struct netmsg_base      base;
 272         int                     nm_cmd;
 273         int                     nm_direct;
 274         struct sockaddr         *nm_arg;
 275         void                    *nm_extra;
 276 };
 277
 278 /*
 279  * Union of all possible netmsgs.  Note that when a netmsg is sent the
 280  * actual allocated storage is likely only the size of the particular
 281  * class of message, and not sizeof(union netmsg).
 282  */
 283 union netmsg {
 284         struct lwkt_msg                 lmsg;           /* base embedded */
 285         struct netmsg_base              base;           /* base embedded */
 286
 287         struct netmsg_packet            packet;         /* mbuf embedded */
 288         struct netmsg_pr_timeout        timeout;
 289         struct netmsg_so_notify         notify;
 290         struct netmsg_so_notify_abort   notify_abort;
 291
 292         struct netmsg_pr_ctloutput      ctloutput;
 293         struct netmsg_pr_ctlinput       ctlinput;
 294
 295         struct netmsg_pru_abort         abort;
 296         struct netmsg_pru_accept        accept;         /* synchronous */
 297         struct netmsg_pru_attach        attach;
 298         struct netmsg_pru_bind          bind;
 299         struct netmsg_pru_connect       connect;
 300         struct netmsg_pru_connect2      connect2;
 301         struct netmsg_pru_control       control;        /* synchronous */
 302         struct netmsg_pru_detach        detach;
 303         struct netmsg_pru_disconnect    disconnect;
 304         struct netmsg_pru_listen        listen;
 305         struct netmsg_pru_peeraddr      peeraddr;
 306         struct netmsg_pru_rcvd          rcvd;
 307         struct netmsg_pru_rcvoob        rcvoob;
 308         struct netmsg_pru_send          send;
 309         struct netmsg_pru_sense         sense;
 310         struct netmsg_pru_shutdown      shutdown;
 311         struct netmsg_pru_sockaddr      sockaddr;
 312         struct netmsg_pru_sosend        sosend;         /* synchronous */
 313         struct netmsg_pru_soreceive     soreceive;      /* synchronous */
 314 };
 315
 316 #endif  /* _KERNEL || _KERNEL_STRUCTURES */
 317
 318 #endif  /* !_NET_NETMSG_H_ */