Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/netiso/clnp_raw.c
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1 /* $NetBSD: clnp_raw.c,v 1.32 2008/08/09 13:52:05 dogcow Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)clnp_raw.c 8.1 (Berkeley) 6/10/93 32 */ 33 34 /*********************************************************** 35 Copyright IBM Corporation 1987 36 37 All Rights Reserved 38 39 Permission to use, copy, modify, and distribute this software and its 40 documentation for any purpose and without fee is hereby granted, 41 provided that the above copyright notice appear in all copies and that 42 both that copyright notice and this permission notice appear in 43 supporting documentation, and that the name of IBM not be 44 used in advertising or publicity pertaining to distribution of the 45 software without specific, written prior permission. 46 47 IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 48 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL 49 IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR 50 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 51 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 52 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 53 SOFTWARE. 54 55 ******************************************************************/ 56 57 /* 58 * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: clnp_raw.c,v 1.32 2008/08/09 13:52:05 dogcow Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/mbuf.h> 66 #include <sys/domain.h> 67 #include <sys/protosw.h> 68 #include <sys/socket.h> 69 #include <sys/socketvar.h> 70 #include <sys/errno.h> 71 #include <sys/time.h> 72 #include <sys/systm.h> 73 #include <sys/proc.h> 74 75 #include <net/if.h> 76 #include <net/route.h> 77 #include <net/raw_cb.h> 78 79 #include <netiso/iso.h> 80 #include <netiso/iso_pcb.h> 81 #include <netiso/clnp.h> 82 #include <netiso/clnp_stat.h> 83 #include <netiso/argo_debug.h> 84 85 #include <netiso/tp_user.h> /* XXX -- defines SOL_NETWORK */ 86 87 #include <machine/stdarg.h> 88 89 struct sockproto rclnp_proto = {PF_ISO, 0}; 90 91 /* 92 * FUNCTION: rclnp_input 93 * 94 * PURPOSE: Setup generic address and protocol structures for 95 * raw input routine, then pass them along with the 96 * mbuf chain. 97 * 98 * RETURNS: none 99 * 100 * SIDE EFFECTS: 101 * 102 * NOTES: The protocol field of rclnp_proto is set to zero 103 * indicating no protocol. 104 */ 105 void 106 rclnp_input(struct mbuf *m, ...) 107 { 108 struct sockaddr_iso *src; /* ptr to src address */ 109 struct sockaddr_iso *dst; /* ptr to dest address */ 110 int hdrlen; /* length (in bytes) of clnp header */ 111 va_list ap; 112 113 va_start(ap, m); 114 src = va_arg(ap, struct sockaddr_iso *); 115 dst = va_arg(ap, struct sockaddr_iso *); 116 hdrlen = va_arg(ap, int); 117 va_end(ap); 118 #ifdef TROLL 119 if (trollctl.tr_ops & TR_CHUCK) { 120 m_freem(m); 121 return; 122 } 123 #endif /* TROLL */ 124 125 raw_input(m, &rclnp_proto, sisotosa(src), sisotosa(dst)); 126 } 127 128 /* 129 * FUNCTION: rclnp_output 130 * 131 * PURPOSE: Prepare to send a raw clnp packet. Setup src and dest 132 * addresses, count the number of bytes to send, and 133 * call clnp_output. 134 * 135 * RETURNS: success - 0 136 * failure - an appropriate error code 137 * 138 * SIDE EFFECTS: 139 * 140 * NOTES: 141 */ 142 int 143 rclnp_output(struct mbuf *m0, ...) 144 { 145 struct socket *so; /* socket to send from */ 146 struct rawisopcb *rp; /* ptr to raw cb */ 147 int error; /* return value of function */ 148 int flags; /* flags for clnp_output */ 149 va_list ap; 150 151 va_start(ap, m0); 152 so = va_arg(ap, struct socket *); 153 va_end(ap); 154 rp = sotorawisopcb(so); 155 156 if ((m0->m_flags & M_PKTHDR) == 0) 157 return (EINVAL); 158 /* 159 * Set up src address. If user has bound socket to an address, use it. 160 * Otherwise, do not specify src (clnp_output will fill it in). 161 */ 162 if (rp->risop_rcb.rcb_laddr) { 163 if (rp->risop_isop.isop_sladdr.siso_family != AF_ISO) { 164 bad: 165 m_freem(m0); 166 return (EAFNOSUPPORT); 167 } 168 } 169 /* set up dest address */ 170 if (rp->risop_rcb.rcb_faddr == 0) 171 goto bad; 172 rp->risop_isop.isop_sfaddr = *satosiso(rp->risop_rcb.rcb_faddr); 173 rp->risop_isop.isop_faddr = &rp->risop_isop.isop_sfaddr; 174 175 /* get flags and ship it off */ 176 flags = rp->risop_flags & CLNP_VFLAGS; 177 178 error = clnp_output(m0, &rp->risop_isop, m0->m_pkthdr.len, 179 flags | CLNP_NOCACHE); 180 181 return (error); 182 } 183 184 /* 185 * FUNCTION: rclnp_ctloutput 186 * 187 * PURPOSE: Raw clnp socket option processing 188 * All options are stored inside a sockopt. 189 * 190 * RETURNS: success - 0 191 * failure - unix error code 192 * 193 * SIDE EFFECTS: 194 * 195 * NOTES: 196 */ 197 int 198 rclnp_ctloutput( 199 int op, /* type of operation */ 200 struct socket *so, /* ptr to socket */ 201 struct sockopt *sopt) /* socket options */ 202 { 203 int error = 0; 204 struct rawisopcb *rp = sotorawisopcb(so); /* raw cb ptr */ 205 206 #ifdef ARGO_DEBUG 207 if (argo_debug[D_CTLOUTPUT]) { 208 printf("rclnp_ctloutput: op = x%x, level = x%x, name = x%x\n", 209 op, sopt->sopt_level, sopt->sopt_name); 210 printf("rclnp_ctloutput: %zu bytes of data\n", sopt->sopt_size); 211 dump_buf(sopt->sopt_data, sopt->sopt_size); 212 } 213 #endif 214 215 #ifdef SOL_NETWORK 216 if (sopt->sopt_level != SOL_NETWORK) 217 return (EINVAL); 218 #endif 219 220 switch (op) { 221 case PRCO_SETOPT: 222 switch (sopt->sopt_name) { 223 case CLNPOPT_FLAGS:{ 224 u_short flags; 225 226 error = sockopt_get(sopt, &flags, sizeof(flags)); 227 if (error) 228 break; 229 230 /* 231 * Don't allow invalid flags to be set 232 */ 233 if ((flags & (CLNP_VFLAGS)) != flags) 234 error = EINVAL; 235 else 236 rp->risop_flags |= flags; 237 238 break; 239 } 240 241 case CLNPOPT_OPTS: { 242 struct mbuf *m; 243 244 m = sockopt_getmbuf(sopt); 245 if (m == NULL) { 246 error = ENOBUFS; 247 break; 248 } 249 250 error = clnp_set_opts(&rp->risop_isop.isop_options, &m); 251 m_freem(m); 252 if (error) 253 break; 254 rp->risop_isop.isop_optindex = m_get(M_WAIT, MT_SOOPTS); 255 (void) clnp_opt_sanity(rp->risop_isop.isop_options, 256 mtod(rp->risop_isop.isop_options, void *), 257 rp->risop_isop.isop_options->m_len, 258 mtod(rp->risop_isop.isop_optindex, 259 struct clnp_optidx *)); 260 break; 261 } 262 } 263 break; 264 265 case PRCO_GETOPT: 266 #ifdef notdef 267 /* commented out to keep hi C quiet */ 268 switch (sopt->sopt_name) { 269 default: 270 error = EINVAL; 271 break; 272 } 273 #endif /* notdef */ 274 break; 275 default: 276 error = EINVAL; 277 break; 278 } 279 return error; 280 } 281 282 /* ARGSUSED */ 283 int 284 clnp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam, 285 struct mbuf *control, struct lwp *l) 286 { 287 int error = 0; 288 struct rawisopcb *rp = sotorawisopcb(so); 289 struct proc *p; 290 291 p = l ? l->l_proc : NULL; 292 rp = sotorawisopcb(so); 293 switch (req) { 294 295 case PRU_ATTACH: 296 sosetlock(so); 297 if (rp != 0) { 298 error = EISCONN; 299 break; 300 } 301 MALLOC(rp, struct rawisopcb *, sizeof *rp, M_PCB, 302 M_WAITOK|M_ZERO); 303 if (rp == 0) 304 return (ENOBUFS); 305 so->so_pcb = rp; 306 break; 307 308 case PRU_DETACH: 309 if (rp->risop_isop.isop_options) 310 m_freem(rp->risop_isop.isop_options); 311 rtcache_free(&rp->risop_isop.isop_route); 312 if (rp->risop_rcb.rcb_laddr) 313 rp->risop_rcb.rcb_laddr = 0; 314 /* free clnp cached hdr if necessary */ 315 if (rp->risop_isop.isop_clnpcache != NULL) { 316 struct clnp_cache *clcp = 317 mtod(rp->risop_isop.isop_clnpcache, struct clnp_cache *); 318 if (clcp->clc_hdr != NULL) { 319 m_free(clcp->clc_hdr); 320 } 321 m_free(rp->risop_isop.isop_clnpcache); 322 } 323 if (rp->risop_isop.isop_optindex != NULL) 324 m_free(rp->risop_isop.isop_optindex); 325 326 break; 327 328 case PRU_BIND: 329 { 330 struct sockaddr_iso *addr = mtod(nam, struct sockaddr_iso *); 331 332 if (nam->m_len != sizeof(*addr)) 333 return (EINVAL); 334 if ((ifnet.tqh_first == 0) || 335 (addr->siso_family != AF_ISO) || 336 (addr->siso_addr.isoa_len && 337 ifa_ifwithaddr(sisotosa(addr)) == 0)) 338 return (EADDRNOTAVAIL); 339 rp->risop_isop.isop_sladdr = *addr; 340 rp->risop_rcb.rcb_laddr = sisotosa( 341 (rp->risop_isop.isop_laddr = &rp->risop_isop.isop_sladdr)); 342 return (0); 343 } 344 case PRU_CONNECT: 345 { 346 struct sockaddr_iso *addr = mtod(nam, struct sockaddr_iso *); 347 348 if ((nam->m_len > sizeof(*addr)) || (addr->siso_len > sizeof(*addr))) 349 return (EINVAL); 350 if (ifnet.tqh_first == 0) 351 return (EADDRNOTAVAIL); 352 353 /* copy the address */ 354 if (addr->siso_family != AF_ISO) 355 rp->risop_isop.isop_sfaddr = *addr; 356 357 /* initialize address pointers */ 358 rp->risop_isop.isop_faddr = &rp->risop_isop.isop_sfaddr; 359 rp->risop_rcb.rcb_faddr = sisotosa( 360 rp->risop_isop.isop_faddr); 361 362 /* address setup, mark socket connected */ 363 soisconnected(so); 364 365 return (0); 366 } 367 } 368 error = raw_usrreq(so, req, m, nam, control, l); 369 370 if (error && req == PRU_ATTACH && so->so_pcb) 371 free((void *) rp, M_PCB); 372 return (error); 373 }
Cache object: 8531a996bb4f56f2b4167f17b9b136ec
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