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if_fddisubr.c (93371) if_fddisubr.c (93373)
1/*
2 * Copyright (c) 1995, 1996
3 * Matt Thomas <matt@3am-software.com>. All rights reserved.
4 * Copyright (c) 1982, 1989, 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

--- 19 unchanged lines hidden (view full) ---

28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
1/*
2 * Copyright (c) 1995, 1996
3 * Matt Thomas <matt@3am-software.com>. All rights reserved.
4 * Copyright (c) 1982, 1989, 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

--- 19 unchanged lines hidden (view full) ---

28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
36 * $FreeBSD: head/sys/net/if_fddisubr.c 93371 2002-03-29 08:14:29Z mdodd $
36 * $FreeBSD: head/sys/net/if_fddisubr.c 93373 2002-03-29 08:51:42Z mdodd $
37 */
38
39#include "opt_atalk.h"
40#include "opt_inet.h"
41#include "opt_inet6.h"
42#include "opt_ipx.h"
43
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/mbuf.h>
47#include <sys/socket.h>
48#include <sys/malloc.h>
49
50#include <net/if.h>
51#include <net/netisr.h>
52#include <net/route.h>
53#include <net/if_llc.h>
54#include <net/if_dl.h>
55#include <net/if_types.h>
37 */
38
39#include "opt_atalk.h"
40#include "opt_inet.h"
41#include "opt_inet6.h"
42#include "opt_ipx.h"
43
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/mbuf.h>
47#include <sys/socket.h>
48#include <sys/malloc.h>
49
50#include <net/if.h>
51#include <net/netisr.h>
52#include <net/route.h>
53#include <net/if_llc.h>
54#include <net/if_dl.h>
55#include <net/if_types.h>
56#include <net/fddi.h>
56
57#if defined(INET) || defined(INET6)
58#include <netinet/in.h>
59#include <netinet/in_var.h>
60#include <netinet/if_ether.h>
61#endif
62#ifdef INET6
63#include <netinet6/nd6.h>
64#endif
57
58#if defined(INET) || defined(INET6)
59#include <netinet/in.h>
60#include <netinet/in_var.h>
61#include <netinet/if_ether.h>
62#endif
63#ifdef INET6
64#include <netinet6/nd6.h>
65#endif
65#include <netinet/if_fddi.h>
66
67#ifdef IPX
68#include <netipx/ipx.h>
69#include <netipx/ipx_if.h>
70#endif
71
72#ifdef NS
73#include <netns/ns.h>

--- 30 unchanged lines hidden (view full) ---

104fddi_output(ifp, m, dst, rt0)
105 struct ifnet *ifp;
106 struct mbuf *m;
107 struct sockaddr *dst;
108 struct rtentry *rt0;
109{
110 u_int16_t type;
111 int loop_copy = 0, error = 0, hdrcmplt = 0;
66
67#ifdef IPX
68#include <netipx/ipx.h>
69#include <netipx/ipx_if.h>
70#endif
71
72#ifdef NS
73#include <netns/ns.h>

--- 30 unchanged lines hidden (view full) ---

104fddi_output(ifp, m, dst, rt0)
105 struct ifnet *ifp;
106 struct mbuf *m;
107 struct sockaddr *dst;
108 struct rtentry *rt0;
109{
110 u_int16_t type;
111 int loop_copy = 0, error = 0, hdrcmplt = 0;
112 u_char esrc[6], edst[6];
112 u_char esrc[FDDI_ADDR_LEN], edst[FDDI_ADDR_LEN];
113 struct rtentry *rt;
114 struct fddi_header *fh;
115 struct arpcom *ac = IFP2AC(ifp);
116
117 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
118 senderr(ENETDOWN);
119 getmicrotime(&ifp->if_lastchange);
120 if ((rt = rt0) != NULL) {

--- 36 unchanged lines hidden (view full) ---

157 }
158 type = htons(ETHERTYPE_IPV6);
159 break;
160#endif
161#ifdef IPX
162 case AF_IPX:
163 type = htons(ETHERTYPE_IPX);
164 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
113 struct rtentry *rt;
114 struct fddi_header *fh;
115 struct arpcom *ac = IFP2AC(ifp);
116
117 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
118 senderr(ENETDOWN);
119 getmicrotime(&ifp->if_lastchange);
120 if ((rt = rt0) != NULL) {

--- 36 unchanged lines hidden (view full) ---

157 }
158 type = htons(ETHERTYPE_IPV6);
159 break;
160#endif
161#ifdef IPX
162 case AF_IPX:
163 type = htons(ETHERTYPE_IPX);
164 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
165 (caddr_t)edst, sizeof (edst));
165 (caddr_t)edst, FDDI_ADDR_LEN);
166 break;
167#endif
168#ifdef NETATALK
169 case AF_APPLETALK: {
170 struct at_ifaddr *aa;
171 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst))
172 return (0);
173 /*

--- 5 unchanged lines hidden (view full) ---

179 /*
180 * In the phase 2 case, we need to prepend an mbuf for the llc header.
181 * Since we must preserve the value of m, which is passed to us by
182 * value, we m_copy() the first mbuf, and use it for our llc header.
183 */
184 if (aa->aa_flags & AFA_PHASE2) {
185 struct llc llc;
186
166 break;
167#endif
168#ifdef NETATALK
169 case AF_APPLETALK: {
170 struct at_ifaddr *aa;
171 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst))
172 return (0);
173 /*

--- 5 unchanged lines hidden (view full) ---

179 /*
180 * In the phase 2 case, we need to prepend an mbuf for the llc header.
181 * Since we must preserve the value of m, which is passed to us by
182 * value, we m_copy() the first mbuf, and use it for our llc header.
183 */
184 if (aa->aa_flags & AFA_PHASE2) {
185 struct llc llc;
186
187 M_PREPEND(m, sizeof(struct llc), M_TRYWAIT);
187 M_PREPEND(m, LLC_SNAPFRAMELEN, M_TRYWAIT);
188 if (m == 0)
189 senderr(ENOBUFS);
190 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
191 llc.llc_control = LLC_UI;
192 bcopy(at_org_code, llc.llc_snap.org_code, sizeof(at_org_code));
193 llc.llc_snap.ether_type = htons(ETHERTYPE_AT);
188 if (m == 0)
189 senderr(ENOBUFS);
190 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
191 llc.llc_control = LLC_UI;
192 bcopy(at_org_code, llc.llc_snap.org_code, sizeof(at_org_code));
193 llc.llc_snap.ether_type = htons(ETHERTYPE_AT);
194 bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
194 bcopy(&llc, mtod(m, caddr_t), LLC_SNAPFRAMELEN);
195 type = 0;
196 } else {
197 type = htons(ETHERTYPE_AT);
198 }
199 break;
200 }
201#endif /* NETATALK */
202#ifdef NS
203 case AF_NS:
204 type = htons(ETHERTYPE_NS);
205 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
195 type = 0;
196 } else {
197 type = htons(ETHERTYPE_AT);
198 }
199 break;
200 }
201#endif /* NETATALK */
202#ifdef NS
203 case AF_NS:
204 type = htons(ETHERTYPE_NS);
205 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
206 (caddr_t)edst, sizeof (edst));
206 (caddr_t)edst, FDDI_ADDR_LEN);
207 break;
208#endif
209
210 case pseudo_AF_HDRCMPLT:
211 {
212 struct ether_header *eh;
213 hdrcmplt = 1;
214 eh = (struct ether_header *)dst->sa_data;
207 break;
208#endif
209
210 case pseudo_AF_HDRCMPLT:
211 {
212 struct ether_header *eh;
213 hdrcmplt = 1;
214 eh = (struct ether_header *)dst->sa_data;
215 (void)memcpy((caddr_t)esrc, (caddr_t)eh->ether_shost, sizeof (esrc));
215 (void)memcpy((caddr_t)esrc, (caddr_t)eh->ether_shost, FDDI_ADDR_LEN);
216 /* FALLTHROUGH */
217 }
218
219 case AF_UNSPEC:
220 {
221 struct ether_header *eh;
222 loop_copy = -1;
223 eh = (struct ether_header *)dst->sa_data;
216 /* FALLTHROUGH */
217 }
218
219 case AF_UNSPEC:
220 {
221 struct ether_header *eh;
222 loop_copy = -1;
223 eh = (struct ether_header *)dst->sa_data;
224 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
224 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, FDDI_ADDR_LEN);
225 if (*edst & 1)
226 m->m_flags |= (M_BCAST|M_MCAST);
227 type = eh->ether_type;
228 break;
229 }
230
231 case AF_IMPLINK:
232 {

--- 31 unchanged lines hidden (view full) ---

264 default:
265 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
266 dst->sa_family);
267 senderr(EAFNOSUPPORT);
268 }
269
270 if (type != 0) {
271 struct llc *l;
225 if (*edst & 1)
226 m->m_flags |= (M_BCAST|M_MCAST);
227 type = eh->ether_type;
228 break;
229 }
230
231 case AF_IMPLINK:
232 {

--- 31 unchanged lines hidden (view full) ---

264 default:
265 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
266 dst->sa_family);
267 senderr(EAFNOSUPPORT);
268 }
269
270 if (type != 0) {
271 struct llc *l;
272 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT);
272 M_PREPEND(m, LLC_SNAPFRAMELEN, M_DONTWAIT);
273 if (m == 0)
274 senderr(ENOBUFS);
275 l = mtod(m, struct llc *);
276 l->llc_control = LLC_UI;
277 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
278 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0;
279 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type,
280 sizeof(u_int16_t));
281 }
282
283 /*
284 * Add local net header. If no space in first mbuf,
285 * allocate another.
286 */
273 if (m == 0)
274 senderr(ENOBUFS);
275 l = mtod(m, struct llc *);
276 l->llc_control = LLC_UI;
277 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
278 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0;
279 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type,
280 sizeof(u_int16_t));
281 }
282
283 /*
284 * Add local net header. If no space in first mbuf,
285 * allocate another.
286 */
287 M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT);
287 M_PREPEND(m, FDDI_HDR_LEN, M_DONTWAIT);
288 if (m == 0)
289 senderr(ENOBUFS);
290 fh = mtod(m, struct fddi_header *);
291 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
288 if (m == 0)
289 senderr(ENOBUFS);
290 fh = mtod(m, struct fddi_header *);
291 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
292 (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst));
292 (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, FDDI_ADDR_LEN);
293 queue_it:
294 if (hdrcmplt)
295 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)esrc,
293 queue_it:
294 if (hdrcmplt)
295 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)esrc,
296 sizeof(fh->fddi_shost));
296 FDDI_ADDR_LEN);
297 else
298 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
297 else
298 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
299 sizeof(fh->fddi_shost));
299 FDDI_ADDR_LEN);
300 /*
301 * If a simplex interface, and the packet is being sent to our
302 * Ethernet address or a broadcast address, loopback a copy.
303 * XXX To make a simplex device behave exactly like a duplex
304 * device, we should copy in the case of sending to our own
305 * ethernet address (thus letting the original actually appear
306 * on the wire). However, we don't do that here for security
307 * reasons and compatibility with the original behavior.
308 */
309 if ((ifp->if_flags & IFF_SIMPLEX) &&
310 (loop_copy != -1)) {
311 if ((m->m_flags & M_BCAST) || loop_copy) {
312 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
313
314 (void) if_simloop(ifp,
300 /*
301 * If a simplex interface, and the packet is being sent to our
302 * Ethernet address or a broadcast address, loopback a copy.
303 * XXX To make a simplex device behave exactly like a duplex
304 * device, we should copy in the case of sending to our own
305 * ethernet address (thus letting the original actually appear
306 * on the wire). However, we don't do that here for security
307 * reasons and compatibility with the original behavior.
308 */
309 if ((ifp->if_flags & IFF_SIMPLEX) &&
310 (loop_copy != -1)) {
311 if ((m->m_flags & M_BCAST) || loop_copy) {
312 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
313
314 (void) if_simloop(ifp,
315 n, dst->sa_family, sizeof(struct fddi_header));
315 n, dst->sa_family, FDDI_HDR_LEN);
316 } else if (bcmp(fh->fddi_dhost,
316 } else if (bcmp(fh->fddi_dhost,
317 fh->fddi_shost, sizeof(fh->fddi_shost)) == 0) {
317 fh->fddi_shost, FDDI_ADDR_LEN) == 0) {
318 (void) if_simloop(ifp,
318 (void) if_simloop(ifp,
319 m, dst->sa_family, sizeof(struct fddi_header));
319 m, dst->sa_family, FDDI_HDR_LEN);
320 return (0); /* XXX */
321 }
322 }
323
324 if (! IF_HANDOFF(&ifp->if_snd, m, ifp))
325 senderr(ENOBUFS);
326 return (error);
327

--- 20 unchanged lines hidden (view full) ---

348 if ((ifp->if_flags & IFF_UP) == 0) {
349 m_freem(m);
350 return;
351 }
352 getmicrotime(&ifp->if_lastchange);
353 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh);
354 if (fh->fddi_dhost[0] & 1) {
355 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost,
320 return (0); /* XXX */
321 }
322 }
323
324 if (! IF_HANDOFF(&ifp->if_snd, m, ifp))
325 senderr(ENOBUFS);
326 return (error);
327

--- 20 unchanged lines hidden (view full) ---

348 if ((ifp->if_flags & IFF_UP) == 0) {
349 m_freem(m);
350 return;
351 }
352 getmicrotime(&ifp->if_lastchange);
353 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh);
354 if (fh->fddi_dhost[0] & 1) {
355 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost,
356 sizeof(fddibroadcastaddr)) == 0)
356 FDDI_ADDR_LEN) == 0)
357 m->m_flags |= M_BCAST;
358 else
359 m->m_flags |= M_MCAST;
360 ifp->if_imcasts++;
361 } else if ((ifp->if_flags & IFF_PROMISC)
362 && bcmp(IFP2AC(ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost,
357 m->m_flags |= M_BCAST;
358 else
359 m->m_flags |= M_MCAST;
360 ifp->if_imcasts++;
361 } else if ((ifp->if_flags & IFF_PROMISC)
362 && bcmp(IFP2AC(ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost,
363 sizeof(fh->fddi_dhost)) != 0) {
363 FDDI_ADDR_LEN) != 0) {
364 m_freem(m);
365 return;
366 }
367
368#ifdef M_LINK0
369 /*
370 * If this has a LLC priority of 0, then mark it so upper
371 * layers have a hint that it really came via a FDDI/Ethernet

--- 11 unchanged lines hidden (view full) ---

383 u_int16_t type;
384 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP)
385 goto dropanyway;
386#ifdef NETATALK
387 if (Bcmp(&(l->llc_snap.org_code)[0], at_org_code,
388 sizeof(at_org_code)) == 0 &&
389 ntohs(l->llc_snap.ether_type) == ETHERTYPE_AT) {
390 inq = &atintrq2;
364 m_freem(m);
365 return;
366 }
367
368#ifdef M_LINK0
369 /*
370 * If this has a LLC priority of 0, then mark it so upper
371 * layers have a hint that it really came via a FDDI/Ethernet

--- 11 unchanged lines hidden (view full) ---

383 u_int16_t type;
384 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP)
385 goto dropanyway;
386#ifdef NETATALK
387 if (Bcmp(&(l->llc_snap.org_code)[0], at_org_code,
388 sizeof(at_org_code)) == 0 &&
389 ntohs(l->llc_snap.ether_type) == ETHERTYPE_AT) {
390 inq = &atintrq2;
391 m_adj( m, sizeof( struct llc ));
391 m_adj(m, LLC_SNAPFRAMELEN);
392 schednetisr(NETISR_ATALK);
393 break;
394 }
395
396 if (Bcmp(&(l->llc_snap.org_code)[0], aarp_org_code,
397 sizeof(aarp_org_code)) == 0 &&
398 ntohs(l->llc_snap.ether_type) == ETHERTYPE_AARP) {
392 schednetisr(NETISR_ATALK);
393 break;
394 }
395
396 if (Bcmp(&(l->llc_snap.org_code)[0], aarp_org_code,
397 sizeof(aarp_org_code)) == 0 &&
398 ntohs(l->llc_snap.ether_type) == ETHERTYPE_AARP) {
399 m_adj( m, sizeof( struct llc ));
399 m_adj(m, LLC_SNAPFRAMELEN);
400 aarpinput(IFP2AC(ifp), m); /* XXX */
401 return;
402 }
403#endif /* NETATALK */
404 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0)
405 goto dropanyway;
406 type = ntohs(l->llc_snap.ether_type);
407 m_adj(m, 8);

--- 73 unchanged lines hidden (view full) ---

481void
482fddi_ifattach(ifp)
483 struct ifnet *ifp;
484{
485 struct ifaddr *ifa;
486 struct sockaddr_dl *sdl;
487
488 ifp->if_type = IFT_FDDI;
400 aarpinput(IFP2AC(ifp), m); /* XXX */
401 return;
402 }
403#endif /* NETATALK */
404 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0)
405 goto dropanyway;
406 type = ntohs(l->llc_snap.ether_type);
407 m_adj(m, 8);

--- 73 unchanged lines hidden (view full) ---

481void
482fddi_ifattach(ifp)
483 struct ifnet *ifp;
484{
485 struct ifaddr *ifa;
486 struct sockaddr_dl *sdl;
487
488 ifp->if_type = IFT_FDDI;
489 ifp->if_addrlen = 6;
489 ifp->if_addrlen = FDDI_ADDR_LEN;
490 ifp->if_hdrlen = 21;
491 ifp->if_mtu = FDDIMTU;
492 ifp->if_resolvemulti = fddi_resolvemulti;
493 ifp->if_baudrate = 100000000;
494#ifdef IFF_NOTRAILERS
495 ifp->if_flags |= IFF_NOTRAILERS;
496#endif
497 ifp->if_broadcastaddr = fddibroadcastaddr;

--- 89 unchanged lines hidden --- 		490 ifp->if_hdrlen = 21;
491 ifp->if_mtu = FDDIMTU;
492 ifp->if_resolvemulti = fddi_resolvemulti;
493 ifp->if_baudrate = 100000000;
494#ifdef IFF_NOTRAILERS
495 ifp->if_flags |= IFF_NOTRAILERS;
496#endif
497 ifp->if_broadcastaddr = fddibroadcastaddr;

--- 89 unchanged lines hidden ---