1/*
2 * Copyright (c) 1998, Larry Lile
3 * All rights reserved.
4 *
5 * For latest sources and information on this driver, please
6 * go to http://anarchy.stdio.com.
7 *
8 * Questions, comments or suggestions should be directed to
9 * Larry Lile <lile@stdio.com>.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice unmodified, this list of conditions, and the following
16 * disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
| 1/*
2 * Copyright (c) 1998, Larry Lile
3 * All rights reserved.
4 *
5 * For latest sources and information on this driver, please
6 * go to http://anarchy.stdio.com.
7 *
8 * Questions, comments or suggestions should be directed to
9 * Larry Lile <lile@stdio.com>.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice unmodified, this list of conditions, and the following
16 * disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
|
33 * $FreeBSD: head/sys/net/if_iso88025subr.c 67164 2000-10-15 14:19:01Z phk $
| 33 * $FreeBSD: head/sys/net/if_iso88025subr.c 69152 2000-11-25 07:35:38Z jlemon $
|
34 *
35 */
36
37/*
38 *
39 * General ISO 802.5 (Token Ring) support routines
40 *
41 */
42
43#include "opt_inet.h"
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/mbuf.h>
48#include <sys/socket.h>
49#include <sys/sockio.h>
50#include <sys/sysctl.h>
51
52#include <net/if.h>
53#include <net/netisr.h>
54#include <net/route.h>
55#include <net/if_llc.h>
56#include <net/if_dl.h>
57#include <net/if_types.h>
58
59#include <net/if_arp.h>
60
61#include <net/iso88025.h>
62
63#ifdef INET
64#include <netinet/in.h>
65#include <netinet/in_var.h>
66#include <netinet/if_ether.h>
67#endif
68
69#include <net/bpf.h>
70
71#include <machine/md_var.h>
72
73#include <i386/isa/isa_device.h>
74
75#include <vm/vm.h>
76#include <vm/vm_param.h>
77#include <vm/pmap.h>
78
79#include <net/iso88025.h>
80
81void
82iso88025_ifattach(struct ifnet *ifp)
83{
84 register struct ifaddr *ifa = NULL;
85 register struct sockaddr_dl *sdl;
86
87 ifp->if_type = IFT_ISO88025;
88 ifp->if_addrlen = ISO88025_ADDR_LEN;
89 ifp->if_hdrlen = ISO88025_HDR_LEN;
90 if (ifp->if_baudrate == 0)
91 ifp->if_baudrate = TR_16MBPS; /* 16Mbit should be a safe default */
92 if (ifp->if_mtu == 0)
93 ifp->if_mtu = ISO88025_DEFAULT_MTU;
94
95 ifa = ifnet_addrs[ifp->if_index - 1];
96 if (ifa == 0) {
97 printf("iso88025_ifattach: no lladdr!\n");
98 return;
99 }
100 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
101 sdl->sdl_type = IFT_ISO88025;
102 sdl->sdl_alen = ifp->if_addrlen;
103 bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
104}
105
106int
107iso88025_ioctl(struct ifnet *ifp, int command, caddr_t data)
108{
109 struct ifaddr *ifa = (struct ifaddr *) data;
110 struct ifreq *ifr = (struct ifreq *) data;
111 int error = 0;
112
113 switch (command) {
114 case SIOCSIFADDR:
115 ifp->if_flags |= IFF_UP;
116
117 switch (ifa->ifa_addr->sa_family) {
118#ifdef INET
119 case AF_INET:
120 ifp->if_init(ifp->if_softc); /* before arpwhohas */
121 arp_ifinit((struct arpcom *)ifp, ifa);
122 break;
123#endif
124 default:
125 ifp->if_init(ifp->if_softc);
126 break;
127 }
128 break;
129
130 case SIOCGIFADDR:
131 {
132 struct sockaddr *sa;
133
134 sa = (struct sockaddr *) & ifr->ifr_data;
135 bcopy(((struct arpcom *)ifp->if_softc)->ac_enaddr,
136 (caddr_t) sa->sa_data, ISO88025_ADDR_LEN);
137 }
138 break;
139
140 case SIOCSIFMTU:
141 /*
142 * Set the interface MTU.
143 */
144 if (ifr->ifr_mtu > ISO88025_MAX_MTU) {
145 error = EINVAL;
146 } else {
147 ifp->if_mtu = ifr->ifr_mtu;
148 }
149 break;
150 }
151 return (error);
152}
153
154/*
155 * ISO88025 encapsulation
156 */
157int
158iso88025_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, struct rtentry *rt0)
159{
160 register struct iso88025_header *th;
161 struct iso88025_header gen_th;
162 register struct iso88025_sockaddr_data *sd = (struct iso88025_sockaddr_data *)dst->sa_data;
163 register struct llc *l;
164 register struct sockaddr_dl *sdl = NULL;
| 34 *
35 */
36
37/*
38 *
39 * General ISO 802.5 (Token Ring) support routines
40 *
41 */
42
43#include "opt_inet.h"
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/mbuf.h>
48#include <sys/socket.h>
49#include <sys/sockio.h>
50#include <sys/sysctl.h>
51
52#include <net/if.h>
53#include <net/netisr.h>
54#include <net/route.h>
55#include <net/if_llc.h>
56#include <net/if_dl.h>
57#include <net/if_types.h>
58
59#include <net/if_arp.h>
60
61#include <net/iso88025.h>
62
63#ifdef INET
64#include <netinet/in.h>
65#include <netinet/in_var.h>
66#include <netinet/if_ether.h>
67#endif
68
69#include <net/bpf.h>
70
71#include <machine/md_var.h>
72
73#include <i386/isa/isa_device.h>
74
75#include <vm/vm.h>
76#include <vm/vm_param.h>
77#include <vm/pmap.h>
78
79#include <net/iso88025.h>
80
81void
82iso88025_ifattach(struct ifnet *ifp)
83{
84 register struct ifaddr *ifa = NULL;
85 register struct sockaddr_dl *sdl;
86
87 ifp->if_type = IFT_ISO88025;
88 ifp->if_addrlen = ISO88025_ADDR_LEN;
89 ifp->if_hdrlen = ISO88025_HDR_LEN;
90 if (ifp->if_baudrate == 0)
91 ifp->if_baudrate = TR_16MBPS; /* 16Mbit should be a safe default */
92 if (ifp->if_mtu == 0)
93 ifp->if_mtu = ISO88025_DEFAULT_MTU;
94
95 ifa = ifnet_addrs[ifp->if_index - 1];
96 if (ifa == 0) {
97 printf("iso88025_ifattach: no lladdr!\n");
98 return;
99 }
100 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
101 sdl->sdl_type = IFT_ISO88025;
102 sdl->sdl_alen = ifp->if_addrlen;
103 bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
104}
105
106int
107iso88025_ioctl(struct ifnet *ifp, int command, caddr_t data)
108{
109 struct ifaddr *ifa = (struct ifaddr *) data;
110 struct ifreq *ifr = (struct ifreq *) data;
111 int error = 0;
112
113 switch (command) {
114 case SIOCSIFADDR:
115 ifp->if_flags |= IFF_UP;
116
117 switch (ifa->ifa_addr->sa_family) {
118#ifdef INET
119 case AF_INET:
120 ifp->if_init(ifp->if_softc); /* before arpwhohas */
121 arp_ifinit((struct arpcom *)ifp, ifa);
122 break;
123#endif
124 default:
125 ifp->if_init(ifp->if_softc);
126 break;
127 }
128 break;
129
130 case SIOCGIFADDR:
131 {
132 struct sockaddr *sa;
133
134 sa = (struct sockaddr *) & ifr->ifr_data;
135 bcopy(((struct arpcom *)ifp->if_softc)->ac_enaddr,
136 (caddr_t) sa->sa_data, ISO88025_ADDR_LEN);
137 }
138 break;
139
140 case SIOCSIFMTU:
141 /*
142 * Set the interface MTU.
143 */
144 if (ifr->ifr_mtu > ISO88025_MAX_MTU) {
145 error = EINVAL;
146 } else {
147 ifp->if_mtu = ifr->ifr_mtu;
148 }
149 break;
150 }
151 return (error);
152}
153
154/*
155 * ISO88025 encapsulation
156 */
157int
158iso88025_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, struct rtentry *rt0)
159{
160 register struct iso88025_header *th;
161 struct iso88025_header gen_th;
162 register struct iso88025_sockaddr_data *sd = (struct iso88025_sockaddr_data *)dst->sa_data;
163 register struct llc *l;
164 register struct sockaddr_dl *sdl = NULL;
|
165 int s, error = 0, rif_len = 0;
| 165 int error = 0, rif_len = 0;
|
166 u_char edst[6];
167 register struct rtentry *rt;
| 166 u_char edst[6];
167 register struct rtentry *rt;
|
168 int len = m->m_pkthdr.len, loop_copy = 0;
| 168 int loop_copy = 0;
|
169 struct arpcom *ac = (struct arpcom *)ifp;
170
171 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
172 senderr(ENETDOWN);
173 rt = rt0;
174 if (rt) {
175 if ((rt->rt_flags & RTF_UP) == 0) {
176 rt0 = rt = rtalloc1(dst, 1, 0UL);
177 if (rt0)
178 rt->rt_refcnt--;
179 else
180 senderr(EHOSTUNREACH);
181 }
182 if (rt->rt_flags & RTF_GATEWAY) {
183 if (rt->rt_gwroute == 0)
184 goto lookup;
185 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
186 rtfree(rt); rt = rt0;
187 lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1,
188 0UL);
189 if ((rt = rt->rt_gwroute) == 0)
190 senderr(EHOSTUNREACH);
191 }
192 }
193 if (rt->rt_flags & RTF_REJECT)
194 if (rt->rt_rmx.rmx_expire == 0 ||
195 time_second < rt->rt_rmx.rmx_expire)
196 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
197 }
198
199 /* Calculate routing info length based on arp table entry */
200 if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway))
201 if (sdl->sdl_rcf != NULL)
202 rif_len = TR_RCF_RIFLEN(sdl->sdl_rcf);
203
204 /* Generate a generic 802.5 header for the packet */
205 gen_th.ac = TR_AC;
206 gen_th.fc = TR_LLC_FRAME;
207 memcpy(gen_th.iso88025_shost, ac->ac_enaddr, sizeof(ac->ac_enaddr));
208 if (rif_len) {
209 gen_th.iso88025_shost[0] |= TR_RII;
210 if (rif_len > 2) {
211 gen_th.rcf = sdl->sdl_rcf;
212 memcpy(gen_th.rd, sdl->sdl_route, rif_len - 2);
213 }
214 }
215
216
217 switch (dst->sa_family) {
218#ifdef INET
219 case AF_INET:
220 if (!arpresolve(ac, rt, m, dst, edst, rt0))
221 return (0); /* if not yet resolved */
222 /* Add LLC and SNAP headers */
223 M_PREPEND(m, 8, M_DONTWAIT);
224 if (m == 0)
225 senderr(ENOBUFS);
226 l = mtod(m, struct llc *);
227 l->llc_un.type_snap.ether_type = htons(ETHERTYPE_IP);
228 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
229 l->llc_un.type_snap.control = LLC_UI;
230 l->llc_un.type_snap.org_code[0] = 0x0;
231 l->llc_un.type_snap.org_code[1] = 0x0;
232 l->llc_un.type_snap.org_code[2] = 0x0;
233 memcpy(gen_th.iso88025_dhost, edst, sizeof(edst));
234 break;
235#endif
236
237 case AF_UNSPEC:
238 /*
239 * For AF_UNSPEC sockaddr.sa_data must contain all of the
240 * mac information needed to send the packet. This allows
241 * full mac, llc, and source routing function to be controlled.
242 * llc and source routing information must already be in the
243 * mbuf provided, ac/fc are set in sa_data. sockaddr.sa_data
244 * should be a iso88025_sockaddr_data structure see iso88025.h
245 */
246 loop_copy = -1;
247 sd = (struct iso88025_sockaddr_data *)dst->sa_data;
248 gen_th.ac = sd->ac;
249 gen_th.fc = sd->fc;
250 memcpy(gen_th.iso88025_dhost, sd->ether_dhost, sizeof(sd->ether_dhost));
251 memcpy(gen_th.iso88025_shost, sd->ether_shost, sizeof(sd->ether_shost));
252 rif_len = 0;
253 break;
254
255 default:
256 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
257 dst->sa_family);
258 senderr(EAFNOSUPPORT);
259 }
260
261 /*
262 * Add local net header. If no space in first mbuf,
263 * allocate another.
264 */
265
266 M_PREPEND(m, ISO88025_HDR_LEN + rif_len, M_DONTWAIT);
267 if (m == 0)
268 senderr(ENOBUFS);
269
270 /* Copy as much of the generic header as is needed into the mbuf */
271 th = mtod(m, struct iso88025_header *);
272 memcpy(th, &gen_th, ISO88025_HDR_LEN + rif_len);
273
274 /*
275 * If a simplex interface, and the packet is being sent to our
276 * Ethernet address or a broadcast address, loopback a copy.
277 * XXX To make a simplex device behave exactly like a duplex
278 * device, we should copy in the case of sending to our own
279 * ethernet address (thus letting the original actually appear
280 * on the wire). However, we don't do that here for security
281 * reasons and compatibility with the original behavior.
282 */
283 if ((ifp->if_flags & IFF_SIMPLEX) &&
284 (loop_copy != -1)) {
285 if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
286 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
287 (void) if_simloop(ifp,
288 n, dst->sa_family, ISO88025_HDR_LEN);
289 } else if (bcmp(th->iso88025_dhost,
290 th->iso88025_shost, ETHER_ADDR_LEN) == 0) {
291 (void) if_simloop(ifp,
292 m, dst->sa_family, ISO88025_HDR_LEN);
293 return(0); /* XXX */
294 }
295 }
296
| 169 struct arpcom *ac = (struct arpcom *)ifp;
170
171 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
172 senderr(ENETDOWN);
173 rt = rt0;
174 if (rt) {
175 if ((rt->rt_flags & RTF_UP) == 0) {
176 rt0 = rt = rtalloc1(dst, 1, 0UL);
177 if (rt0)
178 rt->rt_refcnt--;
179 else
180 senderr(EHOSTUNREACH);
181 }
182 if (rt->rt_flags & RTF_GATEWAY) {
183 if (rt->rt_gwroute == 0)
184 goto lookup;
185 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
186 rtfree(rt); rt = rt0;
187 lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1,
188 0UL);
189 if ((rt = rt->rt_gwroute) == 0)
190 senderr(EHOSTUNREACH);
191 }
192 }
193 if (rt->rt_flags & RTF_REJECT)
194 if (rt->rt_rmx.rmx_expire == 0 ||
195 time_second < rt->rt_rmx.rmx_expire)
196 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
197 }
198
199 /* Calculate routing info length based on arp table entry */
200 if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway))
201 if (sdl->sdl_rcf != NULL)
202 rif_len = TR_RCF_RIFLEN(sdl->sdl_rcf);
203
204 /* Generate a generic 802.5 header for the packet */
205 gen_th.ac = TR_AC;
206 gen_th.fc = TR_LLC_FRAME;
207 memcpy(gen_th.iso88025_shost, ac->ac_enaddr, sizeof(ac->ac_enaddr));
208 if (rif_len) {
209 gen_th.iso88025_shost[0] |= TR_RII;
210 if (rif_len > 2) {
211 gen_th.rcf = sdl->sdl_rcf;
212 memcpy(gen_th.rd, sdl->sdl_route, rif_len - 2);
213 }
214 }
215
216
217 switch (dst->sa_family) {
218#ifdef INET
219 case AF_INET:
220 if (!arpresolve(ac, rt, m, dst, edst, rt0))
221 return (0); /* if not yet resolved */
222 /* Add LLC and SNAP headers */
223 M_PREPEND(m, 8, M_DONTWAIT);
224 if (m == 0)
225 senderr(ENOBUFS);
226 l = mtod(m, struct llc *);
227 l->llc_un.type_snap.ether_type = htons(ETHERTYPE_IP);
228 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
229 l->llc_un.type_snap.control = LLC_UI;
230 l->llc_un.type_snap.org_code[0] = 0x0;
231 l->llc_un.type_snap.org_code[1] = 0x0;
232 l->llc_un.type_snap.org_code[2] = 0x0;
233 memcpy(gen_th.iso88025_dhost, edst, sizeof(edst));
234 break;
235#endif
236
237 case AF_UNSPEC:
238 /*
239 * For AF_UNSPEC sockaddr.sa_data must contain all of the
240 * mac information needed to send the packet. This allows
241 * full mac, llc, and source routing function to be controlled.
242 * llc and source routing information must already be in the
243 * mbuf provided, ac/fc are set in sa_data. sockaddr.sa_data
244 * should be a iso88025_sockaddr_data structure see iso88025.h
245 */
246 loop_copy = -1;
247 sd = (struct iso88025_sockaddr_data *)dst->sa_data;
248 gen_th.ac = sd->ac;
249 gen_th.fc = sd->fc;
250 memcpy(gen_th.iso88025_dhost, sd->ether_dhost, sizeof(sd->ether_dhost));
251 memcpy(gen_th.iso88025_shost, sd->ether_shost, sizeof(sd->ether_shost));
252 rif_len = 0;
253 break;
254
255 default:
256 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
257 dst->sa_family);
258 senderr(EAFNOSUPPORT);
259 }
260
261 /*
262 * Add local net header. If no space in first mbuf,
263 * allocate another.
264 */
265
266 M_PREPEND(m, ISO88025_HDR_LEN + rif_len, M_DONTWAIT);
267 if (m == 0)
268 senderr(ENOBUFS);
269
270 /* Copy as much of the generic header as is needed into the mbuf */
271 th = mtod(m, struct iso88025_header *);
272 memcpy(th, &gen_th, ISO88025_HDR_LEN + rif_len);
273
274 /*
275 * If a simplex interface, and the packet is being sent to our
276 * Ethernet address or a broadcast address, loopback a copy.
277 * XXX To make a simplex device behave exactly like a duplex
278 * device, we should copy in the case of sending to our own
279 * ethernet address (thus letting the original actually appear
280 * on the wire). However, we don't do that here for security
281 * reasons and compatibility with the original behavior.
282 */
283 if ((ifp->if_flags & IFF_SIMPLEX) &&
284 (loop_copy != -1)) {
285 if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
286 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
287 (void) if_simloop(ifp,
288 n, dst->sa_family, ISO88025_HDR_LEN);
289 } else if (bcmp(th->iso88025_dhost,
290 th->iso88025_shost, ETHER_ADDR_LEN) == 0) {
291 (void) if_simloop(ifp,
292 m, dst->sa_family, ISO88025_HDR_LEN);
293 return(0); /* XXX */
294 }
295 }
296
|
297 s = splimp();
298 /*
299 * Queue message on interface, and start output if interface
300 * not yet active.
301 */
302 if (IF_QFULL(&ifp->if_snd)) {
303 printf("iso88025_output: packet dropped QFULL.\n");
304 IF_DROP(&ifp->if_snd);
305 splx(s);
| 297 if (! IF_HANDOFF_ADJ(&ifp->if_snd, m, ifp, ISO88025_HDR_LEN + 8)) {
298 printf("iso88025_output: packet dropped QFULL.\n");
|
306 senderr(ENOBUFS);
307 }
| 299 senderr(ENOBUFS);
300 }
|
308 if (m->m_flags & M_MCAST)
309 ifp->if_omcasts++;
310 IF_ENQUEUE(&ifp->if_snd, m);
311 if ((ifp->if_flags & IFF_OACTIVE) == 0)
312 (*ifp->if_start)(ifp);
313 splx(s);
314 ifp->if_obytes += len + ISO88025_HDR_LEN + 8;
| |
315 return (error);
316
317bad:
318 if (m)
319 m_freem(m);
320 return (error);
321}
322
323/*
324 * ISO 88025 de-encapsulation
325 */
326void
327iso88025_input(struct ifnet *ifp, struct iso88025_header *th, struct mbuf *m)
328{
329 register struct ifqueue *inq;
330 u_short ether_type;
| 301 return (error);
302
303bad:
304 if (m)
305 m_freem(m);
306 return (error);
307}
308
309/*
310 * ISO 88025 de-encapsulation
311 */
312void
313iso88025_input(struct ifnet *ifp, struct iso88025_header *th, struct mbuf *m)
314{
315 register struct ifqueue *inq;
316 u_short ether_type;
|
331 int s;
| |
332 register struct llc *l = mtod(m, struct llc *);
333
334 if ((ifp->if_flags & IFF_UP) == 0) {
335 m_freem(m);
336 return;
337 }
338
339 switch (l->llc_control) {
340 case LLC_UI:
341 break;
342 case LLC_TEST:
343 case LLC_TEST_P:
344 {
345 struct sockaddr sa;
346 struct arpcom *ac = (struct arpcom *)ifp;
347 struct iso88025_sockaddr_data *th2;
348 int i;
349 u_char c = l->llc_dsap;
350
351 if (th->iso88025_shost[0] & TR_RII) { /* XXX */
352 printf("iso88025_input: dropping source routed LLC_TEST\n");
353 m_free(m);
354 return;
355 }
356 l->llc_dsap = l->llc_ssap;
357 l->llc_ssap = c;
358 if (m->m_flags & (M_BCAST | M_MCAST))
359 bcopy((caddr_t)ac->ac_enaddr,
360 (caddr_t)th->iso88025_dhost, ISO88025_ADDR_LEN);
361 sa.sa_family = AF_UNSPEC;
362 sa.sa_len = sizeof(sa);
363 th2 = (struct iso88025_sockaddr_data *)sa.sa_data;
364 for (i = 0; i < ISO88025_ADDR_LEN; i++) {
365 th2->ether_shost[i] = c = th->iso88025_dhost[i];
366 th2->ether_dhost[i] = th->iso88025_dhost[i] = th->iso88025_shost[i];
367 th->iso88025_shost[i] = c;
368 }
369 th2->ac = TR_AC;
370 th2->fc = TR_LLC_FRAME;
371 ifp->if_output(ifp, m, &sa, NULL);
372 return;
373 }
374 default:
375 printf("iso88025_input: unexpected llc control 0x%02x\n", l->llc_control);
376 m_freem(m);
377 return;
378 }
379
380 m->m_pkthdr.len -= 8;
381 m->m_len -= 8;
382 m->m_data += 8; /* Length of LLC header in our case */
383
384 ifp->if_ibytes += m->m_pkthdr.len + sizeof(*th);
385 if (th->iso88025_dhost[0] & 1) {
386 if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)th->iso88025_dhost, sizeof(etherbroadcastaddr)) == 0)
387 m->m_flags |= M_BCAST;
388 else
389 m->m_flags |= M_MCAST;
390 }
391 if (m->m_flags & (M_BCAST|M_MCAST))
392 ifp->if_imcasts++;
393
394 ether_type = ntohs(l->llc_un.type_snap.ether_type);
395
396 switch (ether_type) {
397#ifdef INET
398 case ETHERTYPE_IP:
399 th->iso88025_shost[0] &= ~(TR_RII);
400 if (ipflow_fastforward(m))
401 return;
402 schednetisr(NETISR_IP);
403 inq = &ipintrq;
404 break;
405
406 case ETHERTYPE_ARP:
407 schednetisr(NETISR_ARP);
408 inq = &arpintrq;
409 break;
410#endif
411 default:
412 m_freem(m);
413 return;
414 }
415
| 317 register struct llc *l = mtod(m, struct llc *);
318
319 if ((ifp->if_flags & IFF_UP) == 0) {
320 m_freem(m);
321 return;
322 }
323
324 switch (l->llc_control) {
325 case LLC_UI:
326 break;
327 case LLC_TEST:
328 case LLC_TEST_P:
329 {
330 struct sockaddr sa;
331 struct arpcom *ac = (struct arpcom *)ifp;
332 struct iso88025_sockaddr_data *th2;
333 int i;
334 u_char c = l->llc_dsap;
335
336 if (th->iso88025_shost[0] & TR_RII) { /* XXX */
337 printf("iso88025_input: dropping source routed LLC_TEST\n");
338 m_free(m);
339 return;
340 }
341 l->llc_dsap = l->llc_ssap;
342 l->llc_ssap = c;
343 if (m->m_flags & (M_BCAST | M_MCAST))
344 bcopy((caddr_t)ac->ac_enaddr,
345 (caddr_t)th->iso88025_dhost, ISO88025_ADDR_LEN);
346 sa.sa_family = AF_UNSPEC;
347 sa.sa_len = sizeof(sa);
348 th2 = (struct iso88025_sockaddr_data *)sa.sa_data;
349 for (i = 0; i < ISO88025_ADDR_LEN; i++) {
350 th2->ether_shost[i] = c = th->iso88025_dhost[i];
351 th2->ether_dhost[i] = th->iso88025_dhost[i] = th->iso88025_shost[i];
352 th->iso88025_shost[i] = c;
353 }
354 th2->ac = TR_AC;
355 th2->fc = TR_LLC_FRAME;
356 ifp->if_output(ifp, m, &sa, NULL);
357 return;
358 }
359 default:
360 printf("iso88025_input: unexpected llc control 0x%02x\n", l->llc_control);
361 m_freem(m);
362 return;
363 }
364
365 m->m_pkthdr.len -= 8;
366 m->m_len -= 8;
367 m->m_data += 8; /* Length of LLC header in our case */
368
369 ifp->if_ibytes += m->m_pkthdr.len + sizeof(*th);
370 if (th->iso88025_dhost[0] & 1) {
371 if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)th->iso88025_dhost, sizeof(etherbroadcastaddr)) == 0)
372 m->m_flags |= M_BCAST;
373 else
374 m->m_flags |= M_MCAST;
375 }
376 if (m->m_flags & (M_BCAST|M_MCAST))
377 ifp->if_imcasts++;
378
379 ether_type = ntohs(l->llc_un.type_snap.ether_type);
380
381 switch (ether_type) {
382#ifdef INET
383 case ETHERTYPE_IP:
384 th->iso88025_shost[0] &= ~(TR_RII);
385 if (ipflow_fastforward(m))
386 return;
387 schednetisr(NETISR_IP);
388 inq = &ipintrq;
389 break;
390
391 case ETHERTYPE_ARP:
392 schednetisr(NETISR_ARP);
393 inq = &arpintrq;
394 break;
395#endif
396 default:
397 m_freem(m);
398 return;
399 }
400
|
416 s = splimp();
417 if (IF_QFULL(inq)) {
418 IF_DROP(inq);
419 m_freem(m);
| 401 if (! IF_HANDOFF(inq, m, NULL))
|
420 printf("iso88025_input: Packet dropped (Queue full).\n");
| 402 printf("iso88025_input: Packet dropped (Queue full).\n");
|
421 } else
422 IF_ENQUEUE(inq, m);
423 splx(s);
| |
424}
| 403}
|