1 /*-
2 * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
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. The name of the author may not be used to endorse or promote products
11 * derived from this software withough specific prior written permission
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * $FreeBSD$
25 *
26 */
27
28 /*
29 * DEC PDQ FDDI Controller; code for BSD derived operating systems
30 *
31 * This module provide bus independent BSD specific O/S functions.
32 * (ie. it provides an ifnet interface to the rest of the system)
33 */
34
35
36 #include "opt_inet.h"
37
38 #include <sys/param.h>
39 #include <sys/socket.h>
40 #include <sys/sockio.h>
41 #if defined(__bsdi__) || defined(__NetBSD__)
42 #include <sys/device.h>
43 #endif
44
45 #include <net/if.h>
46 #include <net/if_dl.h>
47
48 #include <net/bpf.h>
49
50 #if defined(__FreeBSD__)
51 #ifdef INET
52 #include <netinet/in.h>
53 #include <netinet/if_ether.h>
54 #endif
55 #include <netinet/if_fddi.h>
56 #else
57 #include <net/if_fddi.h>
58 #endif
59
60 #if defined(__bsdi__)
61 #include <i386/isa/isavar.h>
62 #endif
63
64 #ifdef NS
65 #include <netns/ns.h>
66 #include <netns/ns_if.h>
67 #endif
68
69 #if defined(__FreeBSD__)
70 #include <dev/pdq/pdqvar.h>
71 #include <dev/pdq/pdqreg.h>
72 #else
73 #include "pdqvar.h"
74 #include "pdqreg.h"
75 #endif
76
77 #if defined(__bsdi__) && _BSDI_VERSION < 199506 /* XXX */
78 static void
79 arp_ifinit(
80 struct arpcom *ac,
81 struct ifaddr *ifa)
82 {
83 sc->sc_ac.ac_ipaddr = IA_SIN(ifa)->sin_addr;
84 arpwhohas(&sc->sc_ac, &IA_SIN(ifa)->sin_addr);
85 #if _BSDI_VERSION >= 199401
86 ifa->ifa_rtrequest = arp_rtrequest;
87 ifa->ifa_flags |= RTF_CLONING;
88 #endif
89 }
90 #endif
91
92
93 void
94 pdq_ifinit(
95 pdq_softc_t *sc)
96 {
97 if (sc->sc_if.if_flags & IFF_UP) {
98 sc->sc_if.if_flags |= IFF_RUNNING;
99 if (sc->sc_if.if_flags & IFF_PROMISC) {
100 sc->sc_pdq->pdq_flags |= PDQ_PROMISC;
101 } else {
102 sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC;
103 }
104 if (sc->sc_if.if_flags & IFF_ALLMULTI) {
105 sc->sc_pdq->pdq_flags |= PDQ_ALLMULTI;
106 } else {
107 sc->sc_pdq->pdq_flags &= ~PDQ_ALLMULTI;
108 }
109 if (sc->sc_if.if_flags & IFF_LINK1) {
110 sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT;
111 } else {
112 sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT;
113 }
114 sc->sc_pdq->pdq_flags |= PDQ_RUNNING;
115 pdq_run(sc->sc_pdq);
116 } else {
117 sc->sc_if.if_flags &= ~IFF_RUNNING;
118 sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING;
119 pdq_stop(sc->sc_pdq);
120 }
121 }
122
123 void
124 pdq_ifwatchdog(
125 struct ifnet *ifp)
126 {
127 /*
128 * No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT
129 * seconds. Remove all queued packets.
130 */
131
132 ifp->if_flags &= ~IFF_OACTIVE;
133 ifp->if_timer = 0;
134 for (;;) {
135 struct mbuf *m;
136 IF_DEQUEUE(&ifp->if_snd, m);
137 if (m == NULL)
138 return;
139 m_freem(m);
140 }
141 }
142
143 ifnet_ret_t
144 pdq_ifstart(
145 struct ifnet *ifp)
146 {
147 pdq_softc_t *sc = (pdq_softc_t *) ((caddr_t) ifp - offsetof(pdq_softc_t, sc_ac.ac_if));
148 struct ifqueue *ifq = &ifp->if_snd;
149 struct mbuf *m;
150 int tx = 0;
151
152 if ((ifp->if_flags & IFF_RUNNING) == 0)
153 return;
154
155 if (sc->sc_if.if_timer == 0)
156 sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT;
157
158 if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) {
159 sc->sc_if.if_flags |= IFF_OACTIVE;
160 return;
161 }
162 for (;; tx = 1) {
163 IF_DEQUEUE(ifq, m);
164 if (m == NULL)
165 break;
166
167 if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE) {
168 ifp->if_flags |= IFF_OACTIVE;
169 IF_PREPEND(ifq, m);
170 break;
171 }
172 }
173 if (tx)
174 PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq);
175 }
176
177 void
178 pdq_os_receive_pdu(
179 pdq_t *pdq,
180 struct mbuf *m,
181 size_t pktlen)
182 {
183 pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
184 struct fddi_header *fh = mtod(m, struct fddi_header *);
185
186 sc->sc_if.if_ipackets++;
187 if (sc->sc_bpf != NULL)
188 PDQ_BPF_MTAP(sc, m);
189 if ((fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) {
190 m_freem(m);
191 return;
192 }
193
194 m->m_data += sizeof(struct fddi_header);
195 m->m_len -= sizeof(struct fddi_header);
196 m->m_pkthdr.len = pktlen - sizeof(struct fddi_header);
197 m->m_pkthdr.rcvif = &sc->sc_if;
198 fddi_input(&sc->sc_if, fh, m);
199 }
200
201 void
202 pdq_os_restart_transmitter(
203 pdq_t *pdq)
204 {
205 pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
206 sc->sc_if.if_flags &= ~IFF_OACTIVE;
207 if (sc->sc_if.if_snd.ifq_head != NULL) {
208 sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT;
209 pdq_ifstart(&sc->sc_if);
210 } else {
211 sc->sc_if.if_timer = 0;
212 }
213 }
214
215 void
216 pdq_os_transmit_done(
217 pdq_t *pdq,
218 struct mbuf *m)
219 {
220 pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
221 if (sc->sc_bpf != NULL)
222 PDQ_BPF_MTAP(sc, m);
223 m_freem(m);
224 sc->sc_if.if_opackets++;
225 }
226
227 void
228 pdq_os_addr_fill(
229 pdq_t *pdq,
230 pdq_lanaddr_t *addr,
231 size_t num_addrs)
232 {
233 pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
234 struct ifmultiaddr *ifma;
235
236 for (ifma = sc->sc_if.if_multiaddrs.lh_first; ifma && num_addrs > 0;
237 ifma = ifma->ifma_link.le_next) {
238 char *mcaddr;
239 if (ifma->ifma_addr->sa_family != AF_LINK)
240 continue;
241 mcaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
242 ((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) mcaddr)[0];
243 ((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) mcaddr)[1];
244 ((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) mcaddr)[2];
245 addr++;
246 num_addrs--;
247 }
248 }
249
250 int
251 pdq_ifioctl(
252 struct ifnet *ifp,
253 ioctl_cmd_t cmd,
254 caddr_t data)
255 {
256 pdq_softc_t *sc = (pdq_softc_t *) ((caddr_t) ifp - offsetof(pdq_softc_t, sc_ac.ac_if));
257 int s, error = 0;
258
259 s = splimp();
260
261 switch (cmd) {
262 case SIOCSIFADDR: {
263 struct ifaddr *ifa = (struct ifaddr *)data;
264
265 ifp->if_flags |= IFF_UP;
266 switch(ifa->ifa_addr->sa_family) {
267 #if defined(INET)
268 case AF_INET: {
269 pdq_ifinit(sc);
270 arp_ifinit(&sc->sc_ac, ifa);
271 break;
272 }
273 #endif /* INET */
274
275 #if defined(NS)
276 /* This magic copied from if_is.c; I don't use XNS,
277 * so I have no way of telling if this actually
278 * works or not.
279 */
280 case AF_NS: {
281 struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
282 if (ns_nullhost(*ina)) {
283 ina->x_host = *(union ns_host *)(sc->sc_ac.ac_enaddr);
284 } else {
285 ifp->if_flags &= ~IFF_RUNNING;
286 bcopy((caddr_t)ina->x_host.c_host,
287 (caddr_t)sc->sc_ac.ac_enaddr,
288 sizeof sc->sc_ac.ac_enaddr);
289 }
290
291 pdq_ifinit(sc);
292 break;
293 }
294 #endif /* NS */
295
296 default: {
297 pdq_ifinit(sc);
298 break;
299 }
300 }
301 break;
302 }
303 case SIOCGIFADDR: {
304 struct ifreq *ifr = (struct ifreq *)data;
305 bcopy((caddr_t) sc->sc_ac.ac_enaddr,
306 (caddr_t) ((struct sockaddr *)&ifr->ifr_data)->sa_data,
307 6);
308 break;
309 }
310
311 case SIOCSIFFLAGS: {
312 pdq_ifinit(sc);
313 break;
314 }
315
316 case SIOCADDMULTI:
317 case SIOCDELMULTI:
318 /*
319 * Update multicast listeners
320 */
321 if (sc->sc_if.if_flags & IFF_RUNNING)
322 pdq_run(sc->sc_pdq);
323 error = 0;
324 break;
325
326 #if defined(SIOCSIFMTU)
327 #if !defined(ifr_mtu)
328 #define ifr_mtu ifr_metric
329 #endif
330 case SIOCSIFMTU: {
331 struct ifreq *ifr = (struct ifreq *)data;
332 /*
333 * Set the interface MTU.
334 */
335 if (ifr->ifr_mtu > FDDIMTU) {
336 error = EINVAL;
337 break;
338 }
339 ifp->if_mtu = ifr->ifr_mtu;
340 break;
341 }
342 #endif /* SIOCSIFMTU */
343
344 default: {
345 error = EINVAL;
346 break;
347 }
348 }
349
350 splx(s);
351 return error;
352 }
353
354 #ifndef IFF_NOTRAILERS
355 #define IFF_NOTRAILERS 0
356 #endif
357
358 void
359 pdq_ifattach(
360 pdq_softc_t *sc,
361 ifnet_ret_t (*ifwatchdog)(int unit))
362 {
363 struct ifnet *ifp = &sc->sc_if;
364
365 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
366
367 #if (defined(__FreeBSD__) && BSD >= 199506) || defined(__NetBSD__)
368 ifp->if_watchdog = pdq_ifwatchdog;
369 #else
370 ifp->if_watchdog = ifwatchdog;
371 #endif
372
373 ifp->if_ioctl = pdq_ifioctl;
374 ifp->if_output = fddi_output;
375 ifp->if_start = pdq_ifstart;
376 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
377 #warning "Implement fddi_resolvemulti!"
378 /* ifp->if_resolvemulti = ether_resolvemulti; XXX */
379
380 if_attach(ifp);
381 fddi_ifattach(ifp);
382 PDQ_BPFATTACH(sc, DLT_FDDI, sizeof(struct fddi_header));
383 }
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