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60f56dfc KM |
1 | /* |
2 | * Copyright (c) 1982, 1990 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | * | |
9aceb128 | 7 | * @(#)if_le.c 7.9 (Berkeley) %G% |
60f56dfc KM |
8 | */ |
9 | ||
10 | #include "le.h" | |
11 | #if NLE > 0 | |
12 | ||
1d48484d SM |
13 | #include "bpfilter.h" |
14 | ||
60f56dfc KM |
15 | /* |
16 | * AMD 7990 LANCE | |
17 | * | |
18 | * This driver will generate and accept tailer encapsulated packets even | |
19 | * though it buys us nothing. The motivation was to avoid incompatibilities | |
20 | * with VAXen, SUNs, and others that handle and benefit from them. | |
21 | * This reasoning is dubious. | |
22 | */ | |
b28b3a13 KB |
23 | #include "sys/param.h" |
24 | #include "sys/systm.h" | |
25 | #include "sys/mbuf.h" | |
26 | #include "sys/buf.h" | |
27 | #include "sys/protosw.h" | |
28 | #include "sys/socket.h" | |
29 | #include "sys/syslog.h" | |
30 | #include "sys/ioctl.h" | |
31 | #include "sys/errno.h" | |
60f56dfc | 32 | |
b28b3a13 KB |
33 | #include "net/if.h" |
34 | #include "net/netisr.h" | |
35 | #include "net/route.h" | |
60f56dfc KM |
36 | |
37 | #ifdef INET | |
b28b3a13 KB |
38 | #include "netinet/in.h" |
39 | #include "netinet/in_systm.h" | |
40 | #include "netinet/in_var.h" | |
41 | #include "netinet/ip.h" | |
42 | #include "netinet/if_ether.h" | |
60f56dfc KM |
43 | #endif |
44 | ||
45 | #ifdef NS | |
b28b3a13 KB |
46 | #include "netns/ns.h" |
47 | #include "netns/ns_if.h" | |
60f56dfc KM |
48 | #endif |
49 | ||
3227095f KS |
50 | #ifdef ISO |
51 | extern char all_es_snpa[], all_is_snpa[], all_l1is_snpa[], all_l2is_snpa[]; | |
60f56dfc KM |
52 | #endif |
53 | ||
b28b3a13 KB |
54 | #include "../include/cpu.h" |
55 | #include "../hp300/isr.h" | |
56 | #include "../include/mtpr.h" | |
60f56dfc KM |
57 | #include "device.h" |
58 | #include "if_lereg.h" | |
59 | ||
1d48484d SM |
60 | #if NBPFILTER > 0 |
61 | #include "../net/bpf.h" | |
62 | #include "../net/bpfdesc.h" | |
3227095f | 63 | char hprmp_multi[] = { 9, 0, 9, 0, 0, 4}; |
1d48484d SM |
64 | #endif |
65 | ||
60f56dfc KM |
66 | /* offsets for: ID, REGS, MEM, NVRAM */ |
67 | int lestd[] = { 0, 0x4000, 0x8000, 0xC008 }; | |
68 | ||
69 | int leattach(); | |
70 | struct driver ledriver = { | |
71 | leattach, "le", | |
72 | }; | |
73 | ||
74 | struct isr le_isr[NLE]; | |
75 | int ledebug = 0; /* console error messages */ | |
76 | ||
77 | int leintr(), leinit(), leioctl(), lestart(), ether_output(); | |
78 | struct mbuf *leget(); | |
79 | extern struct ifnet loif; | |
80 | ||
81 | /* | |
82 | * Ethernet software status per interface. | |
83 | * | |
84 | * Each interface is referenced by a network interface structure, | |
85 | * le_if, which the routing code uses to locate the interface. | |
86 | * This structure contains the output queue for the interface, its address, ... | |
87 | */ | |
88 | struct le_softc { | |
89 | struct arpcom sc_ac; /* common Ethernet structures */ | |
90 | #define sc_if sc_ac.ac_if /* network-visible interface */ | |
91 | #define sc_addr sc_ac.ac_enaddr /* hardware Ethernet address */ | |
92 | struct lereg0 *sc_r0; /* DIO registers */ | |
93 | struct lereg1 *sc_r1; /* LANCE registers */ | |
94 | struct lereg2 *sc_r2; /* dual-port RAM */ | |
95 | int sc_rmd; /* predicted next rmd to process */ | |
96 | int sc_runt; | |
97 | int sc_jab; | |
98 | int sc_merr; | |
99 | int sc_babl; | |
100 | int sc_cerr; | |
101 | int sc_miss; | |
102 | int sc_xint; | |
103 | int sc_xown; | |
104 | int sc_uflo; | |
105 | int sc_rxlen; | |
106 | int sc_rxoff; | |
107 | int sc_txoff; | |
108 | int sc_busy; | |
160be114 | 109 | short sc_iflags; |
1d48484d | 110 | caddr_t sc_bpf; |
8d832141 KS |
111 | int sc_tmd; /* predicted next tmd to process */ |
112 | int sc_txcnt; /* transmissions in progress */ | |
113 | int sc_txbad; | |
114 | int sc_txbusy; | |
60f56dfc KM |
115 | } le_softc[NLE]; |
116 | ||
117 | /* access LANCE registers */ | |
118 | #define LERDWR(cntl, src, dst) \ | |
119 | do { \ | |
120 | (dst) = (src); \ | |
121 | } while (((cntl)->ler0_status & LE_ACK) == 0); | |
122 | ||
123 | /* | |
124 | * Interface exists: make available by filling in network interface | |
125 | * record. System will initialize the interface when it is ready | |
126 | * to accept packets. | |
127 | */ | |
128 | leattach(hd) | |
129 | struct hp_device *hd; | |
130 | { | |
131 | register struct lereg0 *ler0; | |
132 | register struct lereg2 *ler2; | |
133 | struct lereg2 *lemem = 0; | |
134 | struct le_softc *le = &le_softc[hd->hp_unit]; | |
135 | struct ifnet *ifp = &le->sc_if; | |
136 | char *cp; | |
137 | int i; | |
138 | ||
139 | ler0 = le->sc_r0 = (struct lereg0 *)(lestd[0] + (int)hd->hp_addr); | |
140 | le->sc_r1 = (struct lereg1 *)(lestd[1] + (int)hd->hp_addr); | |
141 | ler2 = le->sc_r2 = (struct lereg2 *)(lestd[2] + (int)hd->hp_addr); | |
142 | if (ler0->ler0_id != LEID) | |
143 | return(0); | |
144 | le_isr[hd->hp_unit].isr_intr = leintr; | |
145 | hd->hp_ipl = le_isr[hd->hp_unit].isr_ipl = LE_IPL(ler0->ler0_status); | |
146 | le_isr[hd->hp_unit].isr_arg = hd->hp_unit; | |
147 | ler0->ler0_id = 0xFF; | |
148 | DELAY(100); | |
149 | ||
150 | /* | |
151 | * Read the ethernet address off the board, one nibble at a time. | |
152 | */ | |
153 | cp = (char *)(lestd[3] + (int)hd->hp_addr); | |
154 | for (i = 0; i < sizeof(le->sc_addr); i++) { | |
155 | le->sc_addr[i] = (*++cp & 0xF) << 4; | |
156 | cp++; | |
157 | le->sc_addr[i] |= *++cp & 0xF; | |
158 | cp++; | |
159 | } | |
160 | printf("le%d: hardware address %s\n", hd->hp_unit, | |
161 | ether_sprintf(le->sc_addr)); | |
162 | ||
163 | /* | |
164 | * Setup for transmit/receive | |
165 | */ | |
166 | ler2->ler2_mode = LE_MODE; | |
3227095f KS |
167 | #if defined(ISO) || NBPFILTER > 0 |
168 | ler2->ler2_ladrf0 = 0xffffffff; | |
169 | ler2->ler2_ladrf1 = 0xffffffff; | |
60f56dfc KM |
170 | #else |
171 | ler2->ler2_ladrf0 = 0; | |
172 | ler2->ler2_ladrf1 = 0; | |
173 | #endif | |
174 | ler2->ler2_rlen = LE_RLEN; | |
175 | ler2->ler2_rdra = (int)lemem->ler2_rmd; | |
176 | ler2->ler2_tlen = LE_TLEN; | |
177 | ler2->ler2_tdra = (int)lemem->ler2_tmd; | |
178 | isrlink(&le_isr[hd->hp_unit]); | |
179 | ler0->ler0_status = LE_IE; | |
180 | ||
181 | ifp->if_unit = hd->hp_unit; | |
182 | ifp->if_name = "le"; | |
183 | ifp->if_mtu = ETHERMTU; | |
184 | ifp->if_init = leinit; | |
185 | ifp->if_ioctl = leioctl; | |
186 | ifp->if_output = ether_output; | |
187 | ifp->if_start = lestart; | |
188 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; | |
1d48484d | 189 | #if NBPFILTER > 0 |
3733bdf5 | 190 | bpfattach(&le->sc_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); |
1d48484d | 191 | #endif |
60f56dfc KM |
192 | if_attach(ifp); |
193 | return (1); | |
194 | } | |
195 | ||
3227095f | 196 | ledrinit(ler2, le) |
60f56dfc | 197 | register struct lereg2 *ler2; |
3227095f | 198 | register struct le_softc *le; |
60f56dfc KM |
199 | { |
200 | register struct lereg2 *lemem = 0; | |
201 | register int i; | |
202 | ||
3227095f KS |
203 | ler2->ler2_padr[0] = le->sc_addr[1]; |
204 | ler2->ler2_padr[1] = le->sc_addr[0]; | |
205 | ler2->ler2_padr[2] = le->sc_addr[3]; | |
206 | ler2->ler2_padr[3] = le->sc_addr[2]; | |
207 | ler2->ler2_padr[4] = le->sc_addr[5]; | |
208 | ler2->ler2_padr[5] = le->sc_addr[4]; | |
60f56dfc KM |
209 | for (i = 0; i < LERBUF; i++) { |
210 | ler2->ler2_rmd[i].rmd0 = (int)lemem->ler2_rbuf[i]; | |
211 | ler2->ler2_rmd[i].rmd1 = LE_OWN; | |
212 | ler2->ler2_rmd[i].rmd2 = -LEMTU; | |
213 | ler2->ler2_rmd[i].rmd3 = 0; | |
214 | } | |
215 | for (i = 0; i < LETBUF; i++) { | |
216 | ler2->ler2_tmd[i].tmd0 = (int)lemem->ler2_tbuf[i]; | |
217 | ler2->ler2_tmd[i].tmd1 = 0; | |
218 | ler2->ler2_tmd[i].tmd2 = 0; | |
219 | ler2->ler2_tmd[i].tmd3 = 0; | |
220 | } | |
221 | } | |
222 | ||
223 | lereset(unit) | |
224 | register int unit; | |
225 | { | |
226 | register struct le_softc *le = &le_softc[unit]; | |
227 | register struct lereg0 *ler0 = le->sc_r0; | |
228 | register struct lereg1 *ler1 = le->sc_r1; | |
229 | register struct lereg2 *lemem = 0; | |
230 | register int timo = 100000; | |
231 | register int stat; | |
232 | ||
233 | #ifdef lint | |
234 | stat = unit; | |
1d48484d SM |
235 | #endif |
236 | #if NBPFILTER > 0 | |
237 | if (le->sc_if.if_flags & IFF_PROMISC) | |
238 | /* set the promiscuous bit */ | |
239 | le->sc_r2->ler2_mode = LE_MODE|0x8000; | |
240 | else | |
241 | le->sc_r2->ler2_mode = LE_MODE; | |
60f56dfc KM |
242 | #endif |
243 | LERDWR(ler0, LE_CSR0, ler1->ler1_rap); | |
244 | LERDWR(ler0, LE_STOP, ler1->ler1_rdp); | |
3227095f | 245 | ledrinit(le->sc_r2, le); |
8d832141 | 246 | le->sc_txcnt = le->sc_tmd = le->sc_rmd = 0; |
60f56dfc KM |
247 | LERDWR(ler0, LE_CSR1, ler1->ler1_rap); |
248 | LERDWR(ler0, (int)&lemem->ler2_mode, ler1->ler1_rdp); | |
249 | LERDWR(ler0, LE_CSR2, ler1->ler1_rap); | |
250 | LERDWR(ler0, 0, ler1->ler1_rdp); | |
251 | LERDWR(ler0, LE_CSR0, ler1->ler1_rap); | |
252 | LERDWR(ler0, LE_INIT, ler1->ler1_rdp); | |
253 | do { | |
254 | if (--timo == 0) { | |
255 | printf("le%d: init timeout, stat = 0x%x\n", | |
256 | unit, stat); | |
257 | break; | |
258 | } | |
259 | LERDWR(ler0, ler1->ler1_rdp, stat); | |
260 | } while ((stat & LE_IDON) == 0); | |
261 | LERDWR(ler0, LE_STOP, ler1->ler1_rdp); | |
262 | LERDWR(ler0, LE_CSR3, ler1->ler1_rap); | |
263 | LERDWR(ler0, LE_BSWP, ler1->ler1_rdp); | |
264 | LERDWR(ler0, LE_CSR0, ler1->ler1_rap); | |
265 | LERDWR(ler0, LE_STRT | LE_INEA, ler1->ler1_rdp); | |
266 | le->sc_if.if_flags &= ~IFF_OACTIVE; | |
267 | } | |
268 | ||
269 | /* | |
270 | * Initialization of interface | |
271 | */ | |
272 | leinit(unit) | |
273 | int unit; | |
274 | { | |
275 | struct le_softc *le = &le_softc[unit]; | |
276 | register struct ifnet *ifp = &le->sc_if; | |
277 | int s; | |
278 | ||
279 | /* not yet, if address still unknown */ | |
280 | if (ifp->if_addrlist == (struct ifaddr *)0) | |
281 | return; | |
282 | if ((ifp->if_flags & IFF_RUNNING) == 0) { | |
283 | s = splimp(); | |
284 | ifp->if_flags |= IFF_RUNNING; | |
285 | lereset(unit); | |
286 | (void) lestart(ifp); | |
287 | splx(s); | |
288 | } | |
289 | } | |
290 | ||
291 | /* | |
292 | * Start output on interface. Get another datagram to send | |
293 | * off of the interface queue, and copy it to the interface | |
294 | * before starting the output. | |
295 | */ | |
296 | lestart(ifp) | |
297 | struct ifnet *ifp; | |
298 | { | |
299 | register struct le_softc *le = &le_softc[ifp->if_unit]; | |
300 | register struct letmd *tmd; | |
301 | register struct mbuf *m; | |
302 | int len; | |
303 | ||
8d832141 | 304 | again: |
60f56dfc KM |
305 | if ((le->sc_if.if_flags & IFF_RUNNING) == 0) |
306 | return (0); | |
307 | IF_DEQUEUE(&le->sc_if.if_snd, m); | |
308 | if (m == 0) | |
309 | return (0); | |
8d832141 KS |
310 | tmd = le->sc_r2->ler2_tmd + le->sc_tmd; |
311 | if (tmd->tmd1 & LE_OWN) | |
312 | return (le->sc_txbusy++, 0); | |
313 | len = leput(le->sc_r2->ler2_tbuf[le->sc_tmd], m); | |
1d48484d SM |
314 | #if NBPFILTER > 0 |
315 | /* | |
316 | * If bpf is listening on this interface, let it | |
317 | * see the packet before we commit it to the wire. | |
318 | */ | |
319 | if (le->sc_bpf) | |
8d832141 | 320 | bpf_tap(le->sc_bpf, le->sc_r2->ler2_tbuf[le->sc_tmd], len); |
1d48484d | 321 | #endif |
60f56dfc KM |
322 | tmd->tmd3 = 0; |
323 | tmd->tmd2 = -len; | |
324 | tmd->tmd1 = LE_OWN | LE_STP | LE_ENP; | |
8d832141 KS |
325 | if (++le->sc_tmd >= LETBUF) |
326 | le->sc_tmd = 0; | |
327 | if (++le->sc_txcnt >= LETBUF) { | |
328 | le->sc_txcnt = LETBUF; | |
329 | le->sc_if.if_flags |= IFF_OACTIVE; | |
330 | } else | |
331 | goto again; | |
60f56dfc KM |
332 | return (0); |
333 | } | |
334 | ||
335 | leintr(unit) | |
336 | register int unit; | |
337 | { | |
338 | register struct le_softc *le = &le_softc[unit]; | |
339 | register struct lereg0 *ler0 = le->sc_r0; | |
340 | register struct lereg1 *ler1; | |
341 | register int stat; | |
342 | ||
343 | if ((ler0->ler0_status & LE_IR) == 0) | |
344 | return(0); | |
345 | if (ler0->ler0_status & LE_JAB) { | |
346 | le->sc_jab++; | |
347 | lereset(unit); | |
348 | return(1); | |
349 | } | |
350 | ler1 = le->sc_r1; | |
351 | LERDWR(ler0, ler1->ler1_rdp, stat); | |
352 | if (stat & LE_SERR) { | |
353 | leerror(unit, stat); | |
354 | if (stat & LE_MERR) { | |
355 | le->sc_merr++; | |
356 | lereset(unit); | |
357 | return(1); | |
358 | } | |
359 | if (stat & LE_BABL) | |
360 | le->sc_babl++; | |
361 | if (stat & LE_CERR) | |
362 | le->sc_cerr++; | |
363 | if (stat & LE_MISS) | |
364 | le->sc_miss++; | |
365 | LERDWR(ler0, LE_BABL|LE_CERR|LE_MISS|LE_INEA, ler1->ler1_rdp); | |
366 | } | |
367 | if ((stat & LE_RXON) == 0) { | |
368 | le->sc_rxoff++; | |
369 | lereset(unit); | |
370 | return(1); | |
371 | } | |
372 | if ((stat & LE_TXON) == 0) { | |
373 | le->sc_txoff++; | |
374 | lereset(unit); | |
375 | return(1); | |
376 | } | |
377 | if (stat & LE_RINT) { | |
378 | /* interrupt is cleared in lerint */ | |
379 | lerint(unit); | |
380 | } | |
381 | if (stat & LE_TINT) { | |
382 | LERDWR(ler0, LE_TINT|LE_INEA, ler1->ler1_rdp); | |
383 | lexint(unit); | |
384 | } | |
385 | return(1); | |
386 | } | |
387 | ||
388 | /* | |
389 | * Ethernet interface transmitter interrupt. | |
390 | * Start another output if more data to send. | |
391 | */ | |
392 | lexint(unit) | |
393 | register int unit; | |
394 | { | |
395 | register struct le_softc *le = &le_softc[unit]; | |
8d832141 KS |
396 | register struct letmd *tmd; |
397 | int i, loopcount = 0; | |
60f56dfc KM |
398 | |
399 | if ((le->sc_if.if_flags & IFF_OACTIVE) == 0) { | |
400 | le->sc_xint++; | |
401 | return; | |
402 | } | |
8d832141 KS |
403 | again: |
404 | if ((i = le->sc_tmd - le->sc_txcnt) < 0) i += LETBUF; | |
405 | tmd = le->sc_r2->ler2_tmd + i; | |
60f56dfc | 406 | if (tmd->tmd1 & LE_OWN) { |
8d832141 KS |
407 | if (loopcount) |
408 | goto out; | |
60f56dfc KM |
409 | le->sc_xown++; |
410 | return; | |
411 | } | |
412 | if (tmd->tmd1 & LE_ERR) { | |
413 | err: | |
414 | lexerror(unit); | |
415 | le->sc_if.if_oerrors++; | |
416 | if (tmd->tmd3 & (LE_TBUFF|LE_UFLO)) { | |
417 | le->sc_uflo++; | |
418 | lereset(unit); | |
419 | } | |
420 | else if (tmd->tmd3 & LE_LCOL) | |
421 | le->sc_if.if_collisions++; | |
422 | else if (tmd->tmd3 & LE_RTRY) | |
423 | le->sc_if.if_collisions += 16; | |
424 | } | |
425 | else if (tmd->tmd3 & LE_TBUFF) | |
426 | /* XXX documentation says BUFF not included in ERR */ | |
427 | goto err; | |
428 | else if (tmd->tmd1 & LE_ONE) | |
429 | le->sc_if.if_collisions++; | |
430 | else if (tmd->tmd1 & LE_MORE) | |
431 | /* what is the real number? */ | |
432 | le->sc_if.if_collisions += 2; | |
433 | else | |
434 | le->sc_if.if_opackets++; | |
8d832141 KS |
435 | loopcount++; |
436 | if (--le->sc_txcnt > 0) | |
437 | goto again; | |
438 | if (le->sc_txcnt < 0) { | |
439 | le->sc_txbad++; | |
440 | le->sc_txcnt = 0; | |
441 | } | |
442 | out: | |
60f56dfc KM |
443 | le->sc_if.if_flags &= ~IFF_OACTIVE; |
444 | (void) lestart(&le->sc_if); | |
445 | } | |
446 | ||
447 | #define LENEXTRMP \ | |
448 | if (++bix == LERBUF) bix = 0, rmd = le->sc_r2->ler2_rmd; else ++rmd | |
449 | ||
450 | /* | |
451 | * Ethernet interface receiver interrupt. | |
452 | * If input error just drop packet. | |
453 | * Decapsulate packet based on type and pass to type specific | |
454 | * higher-level input routine. | |
455 | */ | |
456 | lerint(unit) | |
457 | int unit; | |
458 | { | |
459 | register struct le_softc *le = &le_softc[unit]; | |
460 | register int bix = le->sc_rmd; | |
461 | register struct lermd *rmd = &le->sc_r2->ler2_rmd[bix]; | |
462 | ||
463 | /* | |
464 | * Out of sync with hardware, should never happen? | |
465 | */ | |
466 | if (rmd->rmd1 & LE_OWN) { | |
467 | LERDWR(le->sc_r0, LE_RINT|LE_INEA, le->sc_r1->ler1_rdp); | |
468 | return; | |
469 | } | |
470 | ||
471 | /* | |
472 | * Process all buffers with valid data | |
473 | */ | |
474 | while ((rmd->rmd1 & LE_OWN) == 0) { | |
475 | int len = rmd->rmd3; | |
476 | ||
477 | /* Clear interrupt to avoid race condition */ | |
478 | LERDWR(le->sc_r0, LE_RINT|LE_INEA, le->sc_r1->ler1_rdp); | |
479 | ||
480 | if (rmd->rmd1 & LE_ERR) { | |
481 | le->sc_rmd = bix; | |
482 | lererror(unit, "bad packet"); | |
483 | le->sc_if.if_ierrors++; | |
484 | } else if ((rmd->rmd1 & (LE_STP|LE_ENP)) != (LE_STP|LE_ENP)) { | |
485 | /* | |
486 | * Find the end of the packet so we can see how long | |
487 | * it was. We still throw it away. | |
488 | */ | |
489 | do { | |
490 | LERDWR(le->sc_r0, LE_RINT|LE_INEA, | |
491 | le->sc_r1->ler1_rdp); | |
492 | rmd->rmd3 = 0; | |
493 | rmd->rmd1 = LE_OWN; | |
494 | LENEXTRMP; | |
495 | } while (!(rmd->rmd1 & (LE_OWN|LE_ERR|LE_STP|LE_ENP))); | |
496 | le->sc_rmd = bix; | |
497 | lererror(unit, "chained buffer"); | |
498 | le->sc_rxlen++; | |
499 | /* | |
500 | * If search terminated without successful completion | |
501 | * we reset the hardware (conservative). | |
502 | */ | |
503 | if ((rmd->rmd1 & (LE_OWN|LE_ERR|LE_STP|LE_ENP)) != | |
504 | LE_ENP) { | |
505 | lereset(unit); | |
506 | return; | |
507 | } | |
508 | } else | |
509 | leread(unit, le->sc_r2->ler2_rbuf[bix], len); | |
510 | rmd->rmd3 = 0; | |
511 | rmd->rmd1 = LE_OWN; | |
512 | LENEXTRMP; | |
513 | } | |
514 | le->sc_rmd = bix; | |
515 | } | |
516 | ||
517 | leread(unit, buf, len) | |
518 | int unit; | |
519 | char *buf; | |
520 | int len; | |
521 | { | |
522 | register struct le_softc *le = &le_softc[unit]; | |
523 | register struct ether_header *et; | |
524 | struct mbuf *m; | |
525 | int off, resid; | |
526 | ||
527 | le->sc_if.if_ipackets++; | |
528 | et = (struct ether_header *)buf; | |
529 | et->ether_type = ntohs((u_short)et->ether_type); | |
530 | /* adjust input length to account for header and CRC */ | |
531 | len = len - sizeof(struct ether_header) - 4; | |
532 | ||
60f56dfc KM |
533 | #define ledataaddr(et, off, type) ((type)(((caddr_t)((et)+1)+(off)))) |
534 | if (et->ether_type >= ETHERTYPE_TRAIL && | |
535 | et->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { | |
536 | off = (et->ether_type - ETHERTYPE_TRAIL) * 512; | |
537 | if (off >= ETHERMTU) | |
538 | return; /* sanity */ | |
539 | et->ether_type = ntohs(*ledataaddr(et, off, u_short *)); | |
540 | resid = ntohs(*(ledataaddr(et, off+2, u_short *))); | |
541 | if (off + resid > len) | |
542 | return; /* sanity */ | |
543 | len = off + resid; | |
544 | } else | |
545 | off = 0; | |
546 | ||
547 | if (len <= 0) { | |
548 | if (ledebug) | |
549 | log(LOG_WARNING, | |
550 | "le%d: ierror(runt packet): from %s: len=%d\n", | |
551 | unit, ether_sprintf(et->ether_shost), len); | |
552 | le->sc_runt++; | |
553 | le->sc_if.if_ierrors++; | |
554 | return; | |
555 | } | |
1d48484d SM |
556 | #if NBPFILTER > 0 |
557 | /* | |
558 | * Check if there's a bpf filter listening on this interface. | |
559 | * If so, hand off the raw packet to bpf, which must deal with | |
560 | * trailers in its own way. | |
561 | */ | |
3227095f | 562 | if (le->sc_bpf) |
1d48484d | 563 | bpf_tap(le->sc_bpf, buf, len + sizeof(struct ether_header)); |
3227095f KS |
564 | #endif |
565 | #if defined(ISO) || NBPFILTER > 0 | |
566 | /* | |
567 | * Note that the interface cannot be in promiscuous mode if | |
568 | * there are no bpf listeners. If we are in promiscuous | |
569 | * mode, we have to check if this packet is really ours. | |
570 | * However, there may be appropriate multicate addresses involved | |
571 | */ | |
572 | #define NOT_TO(p) (bcmp(et->ether_dhost, p, sizeof(et->ether_dhost)) != 0) | |
573 | if (et->ether_dhost[0] & 1) { | |
574 | if (NOT_TO(etherbroadcastaddr) && NOT_TO(hprmp_multi) | |
575 | #ifdef ISO | |
576 | && NOT_TO(all_es_snpa) && NOT_TO(all_is_snpa) | |
577 | && NOT_TO(all_l1is_snpa) && NOT_TO(all_l2is_snpa) | |
578 | #endif | |
579 | ) return; | |
580 | } else if ((le->sc_if.if_flags & IFF_PROMISC) && NOT_TO(le->sc_addr)) | |
581 | return; | |
1d48484d | 582 | #endif |
60f56dfc KM |
583 | /* |
584 | * Pull packet off interface. Off is nonzero if packet | |
585 | * has trailing header; leget will then force this header | |
586 | * information to be at the front, but we still have to drop | |
587 | * the type and length which are at the front of any trailer data. | |
588 | */ | |
589 | m = leget(buf, len, off, &le->sc_if); | |
590 | if (m == 0) | |
591 | return; | |
60f56dfc KM |
592 | ether_input(&le->sc_if, et, m); |
593 | } | |
594 | ||
595 | /* | |
596 | * Routine to copy from mbuf chain to transmit | |
597 | * buffer in board local memory. | |
598 | */ | |
599 | leput(lebuf, m) | |
600 | register char *lebuf; | |
601 | register struct mbuf *m; | |
602 | { | |
603 | register struct mbuf *mp; | |
604 | register int len, tlen = 0; | |
605 | ||
606 | for (mp = m; mp; mp = mp->m_next) { | |
607 | len = mp->m_len; | |
608 | if (len == 0) | |
609 | continue; | |
610 | tlen += len; | |
611 | bcopy(mtod(mp, char *), lebuf, len); | |
612 | lebuf += len; | |
613 | } | |
614 | m_freem(m); | |
615 | if (tlen < LEMINSIZE) { | |
616 | bzero(lebuf, LEMINSIZE - tlen); | |
617 | tlen = LEMINSIZE; | |
618 | } | |
619 | return(tlen); | |
620 | } | |
621 | ||
622 | /* | |
623 | * Routine to copy from board local memory into mbufs. | |
624 | */ | |
625 | struct mbuf * | |
626 | leget(lebuf, totlen, off0, ifp) | |
627 | char *lebuf; | |
628 | int totlen, off0; | |
629 | struct ifnet *ifp; | |
630 | { | |
631 | register struct mbuf *m; | |
632 | struct mbuf *top = 0, **mp = ⊤ | |
633 | register int off = off0, len; | |
634 | register char *cp; | |
635 | char *epkt; | |
636 | ||
637 | lebuf += sizeof (struct ether_header); | |
638 | cp = lebuf; | |
639 | epkt = cp + totlen; | |
640 | if (off) { | |
641 | cp += off + 2 * sizeof(u_short); | |
642 | totlen -= 2 * sizeof(u_short); | |
643 | } | |
644 | ||
645 | MGETHDR(m, M_DONTWAIT, MT_DATA); | |
646 | if (m == 0) | |
647 | return (0); | |
648 | m->m_pkthdr.rcvif = ifp; | |
649 | m->m_pkthdr.len = totlen; | |
650 | m->m_len = MHLEN; | |
651 | ||
652 | while (totlen > 0) { | |
653 | if (top) { | |
654 | MGET(m, M_DONTWAIT, MT_DATA); | |
655 | if (m == 0) { | |
656 | m_freem(top); | |
657 | return (0); | |
658 | } | |
659 | m->m_len = MLEN; | |
660 | } | |
661 | len = min(totlen, epkt - cp); | |
662 | if (len >= MINCLSIZE) { | |
663 | MCLGET(m, M_DONTWAIT); | |
664 | if (m->m_flags & M_EXT) | |
665 | m->m_len = len = min(len, MCLBYTES); | |
666 | else | |
667 | len = m->m_len; | |
668 | } else { | |
669 | /* | |
670 | * Place initial small packet/header at end of mbuf. | |
671 | */ | |
672 | if (len < m->m_len) { | |
673 | if (top == 0 && len + max_linkhdr <= m->m_len) | |
674 | m->m_data += max_linkhdr; | |
675 | m->m_len = len; | |
676 | } else | |
677 | len = m->m_len; | |
678 | } | |
679 | bcopy(cp, mtod(m, caddr_t), (unsigned)len); | |
680 | cp += len; | |
681 | *mp = m; | |
682 | mp = &m->m_next; | |
683 | totlen -= len; | |
684 | if (cp == epkt) | |
685 | cp = lebuf; | |
686 | } | |
687 | return (top); | |
688 | } | |
689 | ||
690 | /* | |
691 | * Process an ioctl request. | |
692 | */ | |
693 | leioctl(ifp, cmd, data) | |
694 | register struct ifnet *ifp; | |
695 | int cmd; | |
696 | caddr_t data; | |
697 | { | |
698 | register struct ifaddr *ifa = (struct ifaddr *)data; | |
699 | struct le_softc *le = &le_softc[ifp->if_unit]; | |
700 | struct lereg1 *ler1 = le->sc_r1; | |
701 | int s = splimp(), error = 0; | |
702 | ||
703 | switch (cmd) { | |
704 | ||
705 | case SIOCSIFADDR: | |
706 | ifp->if_flags |= IFF_UP; | |
707 | switch (ifa->ifa_addr->sa_family) { | |
708 | #ifdef INET | |
709 | case AF_INET: | |
710 | leinit(ifp->if_unit); /* before arpwhohas */ | |
711 | ((struct arpcom *)ifp)->ac_ipaddr = | |
712 | IA_SIN(ifa)->sin_addr; | |
713 | arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); | |
714 | break; | |
715 | #endif | |
716 | #ifdef NS | |
717 | case AF_NS: | |
718 | { | |
719 | register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); | |
720 | ||
721 | if (ns_nullhost(*ina)) | |
722 | ina->x_host = *(union ns_host *)(le->sc_addr); | |
723 | else { | |
724 | /* | |
725 | * The manual says we can't change the address | |
726 | * while the receiver is armed, | |
727 | * so reset everything | |
728 | */ | |
729 | ifp->if_flags &= ~IFF_RUNNING; | |
3227095f | 730 | LERDWR(le->sc_r0, LE_STOP, ler1->ler1_rdp); |
60f56dfc KM |
731 | bcopy((caddr_t)ina->x_host.c_host, |
732 | (caddr_t)le->sc_addr, sizeof(le->sc_addr)); | |
733 | } | |
734 | leinit(ifp->if_unit); /* does le_setaddr() */ | |
735 | break; | |
736 | } | |
737 | #endif | |
738 | default: | |
739 | leinit(ifp->if_unit); | |
740 | break; | |
741 | } | |
742 | break; | |
743 | ||
744 | case SIOCSIFFLAGS: | |
745 | if ((ifp->if_flags & IFF_UP) == 0 && | |
746 | ifp->if_flags & IFF_RUNNING) { | |
747 | LERDWR(le->sc_r0, LE_STOP, ler1->ler1_rdp); | |
748 | ifp->if_flags &= ~IFF_RUNNING; | |
749 | } else if (ifp->if_flags & IFF_UP && | |
750 | (ifp->if_flags & IFF_RUNNING) == 0) | |
751 | leinit(ifp->if_unit); | |
160be114 SM |
752 | /* |
753 | * If the state of the promiscuous bit changes, the interface | |
754 | * must be reset to effect the change. | |
755 | */ | |
756 | if (((ifp->if_flags ^ le->sc_iflags) & IFF_PROMISC) && | |
757 | (ifp->if_flags & IFF_RUNNING)) { | |
758 | le->sc_iflags = ifp->if_flags; | |
759 | lereset(ifp->if_unit); | |
760 | lestart(ifp); | |
761 | } | |
60f56dfc KM |
762 | break; |
763 | ||
764 | default: | |
765 | error = EINVAL; | |
766 | } | |
767 | splx(s); | |
768 | return (error); | |
769 | } | |
770 | ||
771 | leerror(unit, stat) | |
772 | int unit; | |
773 | int stat; | |
774 | { | |
775 | if (!ledebug) | |
776 | return; | |
777 | ||
778 | /* | |
779 | * Not all transceivers implement heartbeat | |
780 | * so we only log CERR once. | |
781 | */ | |
782 | if ((stat & LE_CERR) && le_softc[unit].sc_cerr) | |
783 | return; | |
784 | log(LOG_WARNING, | |
785 | "le%d: error: stat=%b\n", unit, | |
786 | stat, | |
787 | "\20\20ERR\17BABL\16CERR\15MISS\14MERR\13RINT\12TINT\11IDON\10INTR\07INEA\06RXON\05TXON\04TDMD\03STOP\02STRT\01INIT"); | |
788 | } | |
789 | ||
790 | lererror(unit, msg) | |
791 | int unit; | |
792 | char *msg; | |
793 | { | |
794 | register struct le_softc *le = &le_softc[unit]; | |
795 | register struct lermd *rmd; | |
796 | int len; | |
797 | ||
798 | if (!ledebug) | |
799 | return; | |
800 | ||
801 | rmd = &le->sc_r2->ler2_rmd[le->sc_rmd]; | |
802 | len = rmd->rmd3; | |
803 | log(LOG_WARNING, | |
804 | "le%d: ierror(%s): from %s: buf=%d, len=%d, rmd1=%b\n", | |
805 | unit, msg, | |
9aceb128 KM |
806 | len > 11 ? |
807 | ether_sprintf((u_char *)&le->sc_r2->ler2_rbuf[le->sc_rmd][6]) : | |
808 | "unknown", | |
60f56dfc KM |
809 | le->sc_rmd, len, |
810 | rmd->rmd1, | |
811 | "\20\20OWN\17ERR\16FRAM\15OFLO\14CRC\13RBUF\12STP\11ENP"); | |
812 | } | |
813 | ||
814 | lexerror(unit) | |
815 | int unit; | |
816 | { | |
817 | register struct le_softc *le = &le_softc[unit]; | |
818 | register struct letmd *tmd; | |
819 | int len; | |
820 | ||
821 | if (!ledebug) | |
822 | return; | |
823 | ||
824 | tmd = le->sc_r2->ler2_tmd; | |
825 | len = -tmd->tmd2; | |
826 | log(LOG_WARNING, | |
827 | "le%d: oerror: to %s: buf=%d, len=%d, tmd1=%b, tmd3=%b\n", | |
828 | unit, | |
9aceb128 KM |
829 | len > 5 ? |
830 | ether_sprintf((u_char *)&le->sc_r2->ler2_tbuf[0][0]) : | |
831 | "unknown", | |
60f56dfc KM |
832 | 0, len, |
833 | tmd->tmd1, | |
834 | "\20\20OWN\17ERR\16RES\15MORE\14ONE\13DEF\12STP\11ENP", | |
835 | tmd->tmd3, | |
836 | "\20\20BUFF\17UFLO\16RES\15LCOL\14LCAR\13RTRY"); | |
837 | } | |
838 | #endif |