1/*-
2 * Copyright (c) 1999, 2000 Boris Popov
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
| 1/*-
2 * Copyright (c) 1999, 2000 Boris Popov
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
|
26 * $FreeBSD: head/sys/net/if_ef.c 154518 2006-01-18 14:24:39Z andre $
| 26 * $FreeBSD: head/sys/net/if_ef.c 177599 2008-03-25 09:39:02Z ru $
|
27 */
28
29#include "opt_inet.h"
30#include "opt_ipx.h"
31#include "opt_ef.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/sockio.h>
36#include <sys/malloc.h>
37#include <sys/mbuf.h>
38#include <sys/socket.h>
39#include <sys/syslog.h>
40#include <sys/kernel.h>
41#include <sys/module.h>
42
43#include <net/ethernet.h>
44#include <net/if_llc.h>
45#include <net/if.h>
46#include <net/if_arp.h>
47#include <net/if_dl.h>
48#include <net/if_types.h>
49#include <net/netisr.h>
50#include <net/route.h>
51#include <net/bpf.h>
52
53#ifdef INET
54#include <netinet/in.h>
55#include <netinet/in_var.h>
56#include <netinet/if_ether.h>
57#endif
58
59#ifdef IPX
60#include <netipx/ipx.h>
61#include <netipx/ipx_if.h>
62#endif
63
64/* If none of the supported layers is enabled explicitly enable them all */
65#if !defined(ETHER_II) && !defined(ETHER_8023) && !defined(ETHER_8022) && \
66 !defined(ETHER_SNAP)
67#define ETHER_II 1
68#define ETHER_8023 1
69#define ETHER_8022 1
70#define ETHER_SNAP 1
71#endif
72
73/* internal frame types */
74#define ETHER_FT_EII 0 /* Ethernet_II - default */
75#define ETHER_FT_8023 1 /* 802.3 (Novell) */
76#define ETHER_FT_8022 2 /* 802.2 */
77#define ETHER_FT_SNAP 3 /* SNAP */
78#define EF_NFT 4 /* total number of frame types */
79
80#ifdef EF_DEBUG
81#define EFDEBUG(format, args...) printf("%s: "format, __func__ ,## args)
82#else
83#define EFDEBUG(format, args...)
84#endif
85
86#define EFERROR(format, args...) printf("%s: "format, __func__ ,## args)
87
88struct efnet {
89 struct ifnet *ef_ifp;
90 struct ifnet *ef_pifp;
91 int ef_frametype;
92};
93
94struct ef_link {
95 SLIST_ENTRY(ef_link) el_next;
96 struct ifnet *el_ifp; /* raw device for this clones */
97 struct efnet *el_units[EF_NFT]; /* our clones */
98};
99
100static SLIST_HEAD(ef_link_head, ef_link) efdev = {NULL};
101static int efcount;
102
103extern int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m);
104extern int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp,
105 struct sockaddr *dst, short *tp, int *hlen);
106
107/*
108static void ef_reset (struct ifnet *);
109*/
110static int ef_attach(struct efnet *sc);
111static int ef_detach(struct efnet *sc);
112static void ef_init(void *);
113static int ef_ioctl(struct ifnet *, u_long, caddr_t);
114static void ef_start(struct ifnet *);
115static int ef_input(struct ifnet*, struct ether_header *, struct mbuf *);
116static int ef_output(struct ifnet *ifp, struct mbuf **mp,
117 struct sockaddr *dst, short *tp, int *hlen);
118
119static int ef_load(void);
120static int ef_unload(void);
121
122/*
123 * Install the interface, most of structure initialization done in ef_clone()
124 */
125static int
126ef_attach(struct efnet *sc)
127{
128 struct ifnet *ifp = sc->ef_ifp;
129
130 ifp->if_start = ef_start;
131 ifp->if_watchdog = NULL;
132 ifp->if_init = ef_init;
133 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
134 ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
135 /*
136 * Attach the interface
137 */
138 ether_ifattach(ifp, IF_LLADDR(sc->ef_pifp));
139
140 ifp->if_resolvemulti = 0;
141 ifp->if_type = IFT_XETHER;
142 ifp->if_drv_flags |= IFF_DRV_RUNNING;
143
144 EFDEBUG("%s: attached\n", ifp->if_xname);
145 return 1;
146}
147
148/*
149 * This is for _testing_only_, just removes interface from interfaces list
150 */
151static int
152ef_detach(struct efnet *sc)
153{
154 struct ifnet *ifp = sc->ef_ifp;
155 int s;
156
157 s = splimp();
158
159 ether_ifdetach(ifp);
160 if_free(ifp);
161
162 splx(s);
163 return 0;
164}
165
166static void
167ef_init(void *foo) {
168 return;
169}
170
171static int
172ef_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
173{
174 struct efnet *sc = ifp->if_softc;
175 struct ifaddr *ifa = (struct ifaddr*)data;
176 int s, error;
177
178 EFDEBUG("IOCTL %ld for %s\n", cmd, ifp->if_xname);
179 error = 0;
180 s = splimp();
181 switch (cmd) {
182 case SIOCSIFFLAGS:
183 error = 0;
184 break;
185 case SIOCSIFADDR:
186 if (sc->ef_frametype == ETHER_FT_8023 &&
187 ifa->ifa_addr->sa_family != AF_IPX) {
188 error = EAFNOSUPPORT;
189 break;
190 }
191 ifp->if_flags |= IFF_UP;
192 /* FALL THROUGH */
193 default:
194 error = ether_ioctl(ifp, cmd, data);
195 break;
196 }
197 splx(s);
198 return error;
199}
200
201/*
202 * Currently packet prepared in the ether_output(), but this can be a better
203 * place.
204 */
205static void
206ef_start(struct ifnet *ifp)
207{
208 struct efnet *sc = (struct efnet*)ifp->if_softc;
209 struct ifnet *p;
210 struct mbuf *m;
211 int error;
212
213 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
214 p = sc->ef_pifp;
215
216 EFDEBUG("\n");
217 for (;;) {
218 IF_DEQUEUE(&ifp->if_snd, m);
219 if (m == 0)
220 break;
221 BPF_MTAP(ifp, m);
222 IFQ_HANDOFF(p, m, error);
223 if (error) {
224 ifp->if_oerrors++;
225 continue;
226 }
227 ifp->if_opackets++;
228 }
229 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
230 return;
231}
232
233/*
234 * Inline functions do not put additional overhead to procedure call or
235 * parameter passing but simplify the code
236 */
237static int __inline
238ef_inputEII(struct mbuf *m, struct ether_header *eh, u_short ether_type)
239{
240 int isr;
241
242 switch(ether_type) {
243#ifdef IPX
244 case ETHERTYPE_IPX:
245 isr = NETISR_IPX;
246 break;
247#endif
248#ifdef INET
249 case ETHERTYPE_IP:
250 if ((m = ip_fastforward(m)) == NULL)
251 return (0);
252 isr = NETISR_IP;
253 break;
254
255 case ETHERTYPE_ARP:
256 isr = NETISR_ARP;
257 break;
258#endif
259 default:
260 return (EPROTONOSUPPORT);
261 }
262 netisr_dispatch(isr, m);
263 return (0);
264}
265
266static int __inline
267ef_inputSNAP(struct mbuf *m, struct ether_header *eh, struct llc* l,
268 u_short ether_type)
269{
270 int isr;
271
272 switch(ether_type) {
273#ifdef IPX
274 case ETHERTYPE_IPX:
275 m_adj(m, 8);
276 isr = NETISR_IPX;
277 break;
278#endif
279 default:
280 return (EPROTONOSUPPORT);
281 }
282 netisr_dispatch(isr, m);
283 return (0);
284}
285
286static int __inline
287ef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l,
288 u_short ether_type)
289{
290 int isr;
291
292 switch(ether_type) {
293#ifdef IPX
294 case 0xe0:
295 m_adj(m, 3);
296 isr = NETISR_IPX;
297 break;
298#endif
299 default:
300 return (EPROTONOSUPPORT);
301 }
302 netisr_dispatch(isr, m);
303 return (0);
304}
305
306/*
307 * Called from ether_input()
308 */
309static int
310ef_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m)
311{
312 u_short ether_type;
313 int ft = -1;
314 struct efnet *efp;
315 struct ifnet *eifp;
316 struct llc *l;
317 struct ef_link *efl;
318 int isr;
319
320 ether_type = ntohs(eh->ether_type);
321 l = NULL;
322 if (ether_type < ETHERMTU) {
323 l = mtod(m, struct llc*);
324 if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) {
325 /*
326 * Novell's "802.3" frame
327 */
328 ft = ETHER_FT_8023;
329 } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) {
330 /*
331 * 802.2/SNAP
332 */
333 ft = ETHER_FT_SNAP;
334 ether_type = ntohs(l->llc_un.type_snap.ether_type);
335 } else if (l->llc_dsap == l->llc_ssap) {
336 /*
337 * 802.3/802.2
338 */
339 ft = ETHER_FT_8022;
340 ether_type = l->llc_ssap;
341 }
342 } else
343 ft = ETHER_FT_EII;
344
345 if (ft == -1) {
346 EFDEBUG("Unrecognised ether_type %x\n", ether_type);
347 return EPROTONOSUPPORT;
348 }
349
350 /*
351 * Check if interface configured for the given frame
352 */
353 efp = NULL;
354 SLIST_FOREACH(efl, &efdev, el_next) {
355 if (efl->el_ifp == ifp) {
356 efp = efl->el_units[ft];
357 break;
358 }
359 }
360 if (efp == NULL) {
361 EFDEBUG("Can't find if for %d\n", ft);
362 return EPROTONOSUPPORT;
363 }
364 eifp = efp->ef_ifp;
365 if ((eifp->if_flags & IFF_UP) == 0)
366 return EPROTONOSUPPORT;
367 eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh);
368 m->m_pkthdr.rcvif = eifp;
369
370 BPF_MTAP2(eifp, eh, ETHER_HDR_LEN, m);
371 /*
372 * Now we ready to adjust mbufs and pass them to protocol intr's
373 */
374 switch(ft) {
375 case ETHER_FT_EII:
376 return (ef_inputEII(m, eh, ether_type));
377#ifdef IPX
378 case ETHER_FT_8023: /* only IPX can be here */
379 isr = NETISR_IPX;
380 break;
381#endif
382 case ETHER_FT_SNAP:
383 return (ef_inputSNAP(m, eh, l, ether_type));
384 case ETHER_FT_8022:
385 return (ef_input8022(m, eh, l, ether_type));
386 default:
387 EFDEBUG("No support for frame %d and proto %04x\n",
388 ft, ether_type);
389 return (EPROTONOSUPPORT);
390 }
391 netisr_dispatch(isr, m);
392 return (0);
393}
394
395static int
396ef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp,
397 int *hlen)
398{
399 struct efnet *sc = (struct efnet*)ifp->if_softc;
400 struct mbuf *m = *mp;
401 u_char *cp;
402 short type;
403
404 if (ifp->if_type != IFT_XETHER)
405 return ENETDOWN;
406 switch (sc->ef_frametype) {
407 case ETHER_FT_EII:
408#ifdef IPX
409 type = htons(ETHERTYPE_IPX);
410#else
411 return EPFNOSUPPORT;
412#endif
413 break;
414 case ETHER_FT_8023:
415 type = htons(m->m_pkthdr.len);
416 break;
417 case ETHER_FT_8022:
| 27 */
28
29#include "opt_inet.h"
30#include "opt_ipx.h"
31#include "opt_ef.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/sockio.h>
36#include <sys/malloc.h>
37#include <sys/mbuf.h>
38#include <sys/socket.h>
39#include <sys/syslog.h>
40#include <sys/kernel.h>
41#include <sys/module.h>
42
43#include <net/ethernet.h>
44#include <net/if_llc.h>
45#include <net/if.h>
46#include <net/if_arp.h>
47#include <net/if_dl.h>
48#include <net/if_types.h>
49#include <net/netisr.h>
50#include <net/route.h>
51#include <net/bpf.h>
52
53#ifdef INET
54#include <netinet/in.h>
55#include <netinet/in_var.h>
56#include <netinet/if_ether.h>
57#endif
58
59#ifdef IPX
60#include <netipx/ipx.h>
61#include <netipx/ipx_if.h>
62#endif
63
64/* If none of the supported layers is enabled explicitly enable them all */
65#if !defined(ETHER_II) && !defined(ETHER_8023) && !defined(ETHER_8022) && \
66 !defined(ETHER_SNAP)
67#define ETHER_II 1
68#define ETHER_8023 1
69#define ETHER_8022 1
70#define ETHER_SNAP 1
71#endif
72
73/* internal frame types */
74#define ETHER_FT_EII 0 /* Ethernet_II - default */
75#define ETHER_FT_8023 1 /* 802.3 (Novell) */
76#define ETHER_FT_8022 2 /* 802.2 */
77#define ETHER_FT_SNAP 3 /* SNAP */
78#define EF_NFT 4 /* total number of frame types */
79
80#ifdef EF_DEBUG
81#define EFDEBUG(format, args...) printf("%s: "format, __func__ ,## args)
82#else
83#define EFDEBUG(format, args...)
84#endif
85
86#define EFERROR(format, args...) printf("%s: "format, __func__ ,## args)
87
88struct efnet {
89 struct ifnet *ef_ifp;
90 struct ifnet *ef_pifp;
91 int ef_frametype;
92};
93
94struct ef_link {
95 SLIST_ENTRY(ef_link) el_next;
96 struct ifnet *el_ifp; /* raw device for this clones */
97 struct efnet *el_units[EF_NFT]; /* our clones */
98};
99
100static SLIST_HEAD(ef_link_head, ef_link) efdev = {NULL};
101static int efcount;
102
103extern int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m);
104extern int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp,
105 struct sockaddr *dst, short *tp, int *hlen);
106
107/*
108static void ef_reset (struct ifnet *);
109*/
110static int ef_attach(struct efnet *sc);
111static int ef_detach(struct efnet *sc);
112static void ef_init(void *);
113static int ef_ioctl(struct ifnet *, u_long, caddr_t);
114static void ef_start(struct ifnet *);
115static int ef_input(struct ifnet*, struct ether_header *, struct mbuf *);
116static int ef_output(struct ifnet *ifp, struct mbuf **mp,
117 struct sockaddr *dst, short *tp, int *hlen);
118
119static int ef_load(void);
120static int ef_unload(void);
121
122/*
123 * Install the interface, most of structure initialization done in ef_clone()
124 */
125static int
126ef_attach(struct efnet *sc)
127{
128 struct ifnet *ifp = sc->ef_ifp;
129
130 ifp->if_start = ef_start;
131 ifp->if_watchdog = NULL;
132 ifp->if_init = ef_init;
133 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
134 ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
135 /*
136 * Attach the interface
137 */
138 ether_ifattach(ifp, IF_LLADDR(sc->ef_pifp));
139
140 ifp->if_resolvemulti = 0;
141 ifp->if_type = IFT_XETHER;
142 ifp->if_drv_flags |= IFF_DRV_RUNNING;
143
144 EFDEBUG("%s: attached\n", ifp->if_xname);
145 return 1;
146}
147
148/*
149 * This is for _testing_only_, just removes interface from interfaces list
150 */
151static int
152ef_detach(struct efnet *sc)
153{
154 struct ifnet *ifp = sc->ef_ifp;
155 int s;
156
157 s = splimp();
158
159 ether_ifdetach(ifp);
160 if_free(ifp);
161
162 splx(s);
163 return 0;
164}
165
166static void
167ef_init(void *foo) {
168 return;
169}
170
171static int
172ef_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
173{
174 struct efnet *sc = ifp->if_softc;
175 struct ifaddr *ifa = (struct ifaddr*)data;
176 int s, error;
177
178 EFDEBUG("IOCTL %ld for %s\n", cmd, ifp->if_xname);
179 error = 0;
180 s = splimp();
181 switch (cmd) {
182 case SIOCSIFFLAGS:
183 error = 0;
184 break;
185 case SIOCSIFADDR:
186 if (sc->ef_frametype == ETHER_FT_8023 &&
187 ifa->ifa_addr->sa_family != AF_IPX) {
188 error = EAFNOSUPPORT;
189 break;
190 }
191 ifp->if_flags |= IFF_UP;
192 /* FALL THROUGH */
193 default:
194 error = ether_ioctl(ifp, cmd, data);
195 break;
196 }
197 splx(s);
198 return error;
199}
200
201/*
202 * Currently packet prepared in the ether_output(), but this can be a better
203 * place.
204 */
205static void
206ef_start(struct ifnet *ifp)
207{
208 struct efnet *sc = (struct efnet*)ifp->if_softc;
209 struct ifnet *p;
210 struct mbuf *m;
211 int error;
212
213 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
214 p = sc->ef_pifp;
215
216 EFDEBUG("\n");
217 for (;;) {
218 IF_DEQUEUE(&ifp->if_snd, m);
219 if (m == 0)
220 break;
221 BPF_MTAP(ifp, m);
222 IFQ_HANDOFF(p, m, error);
223 if (error) {
224 ifp->if_oerrors++;
225 continue;
226 }
227 ifp->if_opackets++;
228 }
229 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
230 return;
231}
232
233/*
234 * Inline functions do not put additional overhead to procedure call or
235 * parameter passing but simplify the code
236 */
237static int __inline
238ef_inputEII(struct mbuf *m, struct ether_header *eh, u_short ether_type)
239{
240 int isr;
241
242 switch(ether_type) {
243#ifdef IPX
244 case ETHERTYPE_IPX:
245 isr = NETISR_IPX;
246 break;
247#endif
248#ifdef INET
249 case ETHERTYPE_IP:
250 if ((m = ip_fastforward(m)) == NULL)
251 return (0);
252 isr = NETISR_IP;
253 break;
254
255 case ETHERTYPE_ARP:
256 isr = NETISR_ARP;
257 break;
258#endif
259 default:
260 return (EPROTONOSUPPORT);
261 }
262 netisr_dispatch(isr, m);
263 return (0);
264}
265
266static int __inline
267ef_inputSNAP(struct mbuf *m, struct ether_header *eh, struct llc* l,
268 u_short ether_type)
269{
270 int isr;
271
272 switch(ether_type) {
273#ifdef IPX
274 case ETHERTYPE_IPX:
275 m_adj(m, 8);
276 isr = NETISR_IPX;
277 break;
278#endif
279 default:
280 return (EPROTONOSUPPORT);
281 }
282 netisr_dispatch(isr, m);
283 return (0);
284}
285
286static int __inline
287ef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l,
288 u_short ether_type)
289{
290 int isr;
291
292 switch(ether_type) {
293#ifdef IPX
294 case 0xe0:
295 m_adj(m, 3);
296 isr = NETISR_IPX;
297 break;
298#endif
299 default:
300 return (EPROTONOSUPPORT);
301 }
302 netisr_dispatch(isr, m);
303 return (0);
304}
305
306/*
307 * Called from ether_input()
308 */
309static int
310ef_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m)
311{
312 u_short ether_type;
313 int ft = -1;
314 struct efnet *efp;
315 struct ifnet *eifp;
316 struct llc *l;
317 struct ef_link *efl;
318 int isr;
319
320 ether_type = ntohs(eh->ether_type);
321 l = NULL;
322 if (ether_type < ETHERMTU) {
323 l = mtod(m, struct llc*);
324 if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) {
325 /*
326 * Novell's "802.3" frame
327 */
328 ft = ETHER_FT_8023;
329 } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) {
330 /*
331 * 802.2/SNAP
332 */
333 ft = ETHER_FT_SNAP;
334 ether_type = ntohs(l->llc_un.type_snap.ether_type);
335 } else if (l->llc_dsap == l->llc_ssap) {
336 /*
337 * 802.3/802.2
338 */
339 ft = ETHER_FT_8022;
340 ether_type = l->llc_ssap;
341 }
342 } else
343 ft = ETHER_FT_EII;
344
345 if (ft == -1) {
346 EFDEBUG("Unrecognised ether_type %x\n", ether_type);
347 return EPROTONOSUPPORT;
348 }
349
350 /*
351 * Check if interface configured for the given frame
352 */
353 efp = NULL;
354 SLIST_FOREACH(efl, &efdev, el_next) {
355 if (efl->el_ifp == ifp) {
356 efp = efl->el_units[ft];
357 break;
358 }
359 }
360 if (efp == NULL) {
361 EFDEBUG("Can't find if for %d\n", ft);
362 return EPROTONOSUPPORT;
363 }
364 eifp = efp->ef_ifp;
365 if ((eifp->if_flags & IFF_UP) == 0)
366 return EPROTONOSUPPORT;
367 eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh);
368 m->m_pkthdr.rcvif = eifp;
369
370 BPF_MTAP2(eifp, eh, ETHER_HDR_LEN, m);
371 /*
372 * Now we ready to adjust mbufs and pass them to protocol intr's
373 */
374 switch(ft) {
375 case ETHER_FT_EII:
376 return (ef_inputEII(m, eh, ether_type));
377#ifdef IPX
378 case ETHER_FT_8023: /* only IPX can be here */
379 isr = NETISR_IPX;
380 break;
381#endif
382 case ETHER_FT_SNAP:
383 return (ef_inputSNAP(m, eh, l, ether_type));
384 case ETHER_FT_8022:
385 return (ef_input8022(m, eh, l, ether_type));
386 default:
387 EFDEBUG("No support for frame %d and proto %04x\n",
388 ft, ether_type);
389 return (EPROTONOSUPPORT);
390 }
391 netisr_dispatch(isr, m);
392 return (0);
393}
394
395static int
396ef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp,
397 int *hlen)
398{
399 struct efnet *sc = (struct efnet*)ifp->if_softc;
400 struct mbuf *m = *mp;
401 u_char *cp;
402 short type;
403
404 if (ifp->if_type != IFT_XETHER)
405 return ENETDOWN;
406 switch (sc->ef_frametype) {
407 case ETHER_FT_EII:
408#ifdef IPX
409 type = htons(ETHERTYPE_IPX);
410#else
411 return EPFNOSUPPORT;
412#endif
413 break;
414 case ETHER_FT_8023:
415 type = htons(m->m_pkthdr.len);
416 break;
417 case ETHER_FT_8022:
|
418 M_PREPEND(m, ETHER_HDR_LEN + 3, M_TRYWAIT);
419 if (m == NULL) {
420 *mp = NULL;
421 return ENOBUFS;
422 }
| 418 M_PREPEND(m, ETHER_HDR_LEN + 3, M_WAIT);
|
423 /*
424 * Ensure that ethernet header and next three bytes
425 * will fit into single mbuf
426 */
427 m = m_pullup(m, ETHER_HDR_LEN + 3);
428 if (m == NULL) {
429 *mp = NULL;
430 return ENOBUFS;
431 }
432 m_adj(m, ETHER_HDR_LEN);
433 type = htons(m->m_pkthdr.len);
434 cp = mtod(m, u_char *);
435 *cp++ = 0xE0;
436 *cp++ = 0xE0;
437 *cp++ = 0x03;
438 *hlen += 3;
439 break;
440 case ETHER_FT_SNAP:
| 419 /*
420 * Ensure that ethernet header and next three bytes
421 * will fit into single mbuf
422 */
423 m = m_pullup(m, ETHER_HDR_LEN + 3);
424 if (m == NULL) {
425 *mp = NULL;
426 return ENOBUFS;
427 }
428 m_adj(m, ETHER_HDR_LEN);
429 type = htons(m->m_pkthdr.len);
430 cp = mtod(m, u_char *);
431 *cp++ = 0xE0;
432 *cp++ = 0xE0;
433 *cp++ = 0x03;
434 *hlen += 3;
435 break;
436 case ETHER_FT_SNAP:
|
441 M_PREPEND(m, 8, M_TRYWAIT);
442 if (m == NULL) {
443 *mp = NULL;
444 return ENOBUFS;
445 }
| 437 M_PREPEND(m, 8, M_WAIT);
|
446 type = htons(m->m_pkthdr.len);
447 cp = mtod(m, u_char *);
448 bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8);
449 *hlen += 8;
450 break;
451 default:
452 return EPFNOSUPPORT;
453 }
454 *mp = m;
455 *tp = type;
456 return 0;
457}
458
459/*
460 * Create clone from the given interface
461 */
462static int
463ef_clone(struct ef_link *efl, int ft)
464{
465 struct efnet *efp;
466 struct ifnet *eifp;
467 struct ifnet *ifp = efl->el_ifp;
468
469 efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR,
470 M_WAITOK | M_ZERO);
471 if (efp == NULL)
472 return ENOMEM;
473 efp->ef_pifp = ifp;
474 efp->ef_frametype = ft;
475 eifp = efp->ef_ifp = if_alloc(IFT_ETHER);
476 if (eifp == NULL) {
477 free(efp, M_IFADDR);
478 return (ENOSPC);
479 }
480 snprintf(eifp->if_xname, IFNAMSIZ,
481 "%sf%d", ifp->if_xname, efp->ef_frametype);
482 eifp->if_dname = "ef";
483 eifp->if_dunit = IF_DUNIT_NONE;
484 eifp->if_softc = efp;
485 if (ifp->if_ioctl)
486 eifp->if_ioctl = ef_ioctl;
487 efl->el_units[ft] = efp;
488 return 0;
489}
490
491static int
492ef_load(void)
493{
494 struct ifnet *ifp;
495 struct efnet *efp;
496 struct ef_link *efl = NULL, *efl_temp;
497 int error = 0, d;
498
499 IFNET_RLOCK();
500 TAILQ_FOREACH(ifp, &ifnet, if_link) {
501 if (ifp->if_type != IFT_ETHER) continue;
502 EFDEBUG("Found interface %s\n", ifp->if_xname);
503 efl = (struct ef_link*)malloc(sizeof(struct ef_link),
504 M_IFADDR, M_WAITOK | M_ZERO);
505 if (efl == NULL) {
506 error = ENOMEM;
507 break;
508 }
509
510 efl->el_ifp = ifp;
511#ifdef ETHER_II
512 error = ef_clone(efl, ETHER_FT_EII);
513 if (error) break;
514#endif
515#ifdef ETHER_8023
516 error = ef_clone(efl, ETHER_FT_8023);
517 if (error) break;
518#endif
519#ifdef ETHER_8022
520 error = ef_clone(efl, ETHER_FT_8022);
521 if (error) break;
522#endif
523#ifdef ETHER_SNAP
524 error = ef_clone(efl, ETHER_FT_SNAP);
525 if (error) break;
526#endif
527 efcount++;
528 SLIST_INSERT_HEAD(&efdev, efl, el_next);
529 }
530 IFNET_RUNLOCK();
531 if (error) {
532 if (efl)
533 SLIST_INSERT_HEAD(&efdev, efl, el_next);
534 SLIST_FOREACH_SAFE(efl, &efdev, el_next, efl_temp) {
535 for (d = 0; d < EF_NFT; d++)
536 if (efl->el_units[d]) {
537 if (efl->el_units[d]->ef_pifp != NULL)
538 if_free(efl->el_units[d]->ef_pifp);
539 free(efl->el_units[d], M_IFADDR);
540 }
541 free(efl, M_IFADDR);
542 }
543 return error;
544 }
545 SLIST_FOREACH(efl, &efdev, el_next) {
546 for (d = 0; d < EF_NFT; d++) {
547 efp = efl->el_units[d];
548 if (efp)
549 ef_attach(efp);
550 }
551 }
552 ef_inputp = ef_input;
553 ef_outputp = ef_output;
554 EFDEBUG("Loaded\n");
555 return 0;
556}
557
558static int
559ef_unload(void)
560{
561 struct efnet *efp;
562 struct ef_link *efl;
563 int d;
564
565 ef_inputp = NULL;
566 ef_outputp = NULL;
567 SLIST_FOREACH(efl, &efdev, el_next) {
568 for (d = 0; d < EF_NFT; d++) {
569 efp = efl->el_units[d];
570 if (efp) {
571 ef_detach(efp);
572 }
573 }
574 }
575 EFDEBUG("Unloaded\n");
576 return 0;
577}
578
579static int
580if_ef_modevent(module_t mod, int type, void *data)
581{
582 switch ((modeventtype_t)type) {
583 case MOD_LOAD:
584 return ef_load();
585 case MOD_UNLOAD:
586 return ef_unload();
587 default:
588 return EOPNOTSUPP;
589 }
590 return 0;
591}
592
593static moduledata_t if_ef_mod = {
594 "if_ef", if_ef_modevent, NULL
595};
596
597DECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE);
| 438 type = htons(m->m_pkthdr.len);
439 cp = mtod(m, u_char *);
440 bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8);
441 *hlen += 8;
442 break;
443 default:
444 return EPFNOSUPPORT;
445 }
446 *mp = m;
447 *tp = type;
448 return 0;
449}
450
451/*
452 * Create clone from the given interface
453 */
454static int
455ef_clone(struct ef_link *efl, int ft)
456{
457 struct efnet *efp;
458 struct ifnet *eifp;
459 struct ifnet *ifp = efl->el_ifp;
460
461 efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR,
462 M_WAITOK | M_ZERO);
463 if (efp == NULL)
464 return ENOMEM;
465 efp->ef_pifp = ifp;
466 efp->ef_frametype = ft;
467 eifp = efp->ef_ifp = if_alloc(IFT_ETHER);
468 if (eifp == NULL) {
469 free(efp, M_IFADDR);
470 return (ENOSPC);
471 }
472 snprintf(eifp->if_xname, IFNAMSIZ,
473 "%sf%d", ifp->if_xname, efp->ef_frametype);
474 eifp->if_dname = "ef";
475 eifp->if_dunit = IF_DUNIT_NONE;
476 eifp->if_softc = efp;
477 if (ifp->if_ioctl)
478 eifp->if_ioctl = ef_ioctl;
479 efl->el_units[ft] = efp;
480 return 0;
481}
482
483static int
484ef_load(void)
485{
486 struct ifnet *ifp;
487 struct efnet *efp;
488 struct ef_link *efl = NULL, *efl_temp;
489 int error = 0, d;
490
491 IFNET_RLOCK();
492 TAILQ_FOREACH(ifp, &ifnet, if_link) {
493 if (ifp->if_type != IFT_ETHER) continue;
494 EFDEBUG("Found interface %s\n", ifp->if_xname);
495 efl = (struct ef_link*)malloc(sizeof(struct ef_link),
496 M_IFADDR, M_WAITOK | M_ZERO);
497 if (efl == NULL) {
498 error = ENOMEM;
499 break;
500 }
501
502 efl->el_ifp = ifp;
503#ifdef ETHER_II
504 error = ef_clone(efl, ETHER_FT_EII);
505 if (error) break;
506#endif
507#ifdef ETHER_8023
508 error = ef_clone(efl, ETHER_FT_8023);
509 if (error) break;
510#endif
511#ifdef ETHER_8022
512 error = ef_clone(efl, ETHER_FT_8022);
513 if (error) break;
514#endif
515#ifdef ETHER_SNAP
516 error = ef_clone(efl, ETHER_FT_SNAP);
517 if (error) break;
518#endif
519 efcount++;
520 SLIST_INSERT_HEAD(&efdev, efl, el_next);
521 }
522 IFNET_RUNLOCK();
523 if (error) {
524 if (efl)
525 SLIST_INSERT_HEAD(&efdev, efl, el_next);
526 SLIST_FOREACH_SAFE(efl, &efdev, el_next, efl_temp) {
527 for (d = 0; d < EF_NFT; d++)
528 if (efl->el_units[d]) {
529 if (efl->el_units[d]->ef_pifp != NULL)
530 if_free(efl->el_units[d]->ef_pifp);
531 free(efl->el_units[d], M_IFADDR);
532 }
533 free(efl, M_IFADDR);
534 }
535 return error;
536 }
537 SLIST_FOREACH(efl, &efdev, el_next) {
538 for (d = 0; d < EF_NFT; d++) {
539 efp = efl->el_units[d];
540 if (efp)
541 ef_attach(efp);
542 }
543 }
544 ef_inputp = ef_input;
545 ef_outputp = ef_output;
546 EFDEBUG("Loaded\n");
547 return 0;
548}
549
550static int
551ef_unload(void)
552{
553 struct efnet *efp;
554 struct ef_link *efl;
555 int d;
556
557 ef_inputp = NULL;
558 ef_outputp = NULL;
559 SLIST_FOREACH(efl, &efdev, el_next) {
560 for (d = 0; d < EF_NFT; d++) {
561 efp = efl->el_units[d];
562 if (efp) {
563 ef_detach(efp);
564 }
565 }
566 }
567 EFDEBUG("Unloaded\n");
568 return 0;
569}
570
571static int
572if_ef_modevent(module_t mod, int type, void *data)
573{
574 switch ((modeventtype_t)type) {
575 case MOD_LOAD:
576 return ef_load();
577 case MOD_UNLOAD:
578 return ef_unload();
579 default:
580 return EOPNOTSUPP;
581 }
582 return 0;
583}
584
585static moduledata_t if_ef_mod = {
586 "if_ef", if_ef_modevent, NULL
587};
588
589DECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE);
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