Commit | Line | Data |
---|---|---|
da7c5cc6 KM |
1 | /* |
2 | * Copyright (c) 1982 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | * | |
10c3308f | 6 | * @(#)if_en.c 6.13 (Berkeley) %G% |
da7c5cc6 | 7 | */ |
11720282 BJ |
8 | |
9 | #include "en.h" | |
9a0b0c74 | 10 | #if NEN > 0 |
f1b2fa5b | 11 | |
11720282 | 12 | /* |
f1b2fa5b | 13 | * Xerox prototype (3 Mb) Ethernet interface driver. |
11720282 | 14 | */ |
961945a8 | 15 | #include "../machine/pte.h" |
11720282 | 16 | |
a6e960e7 JB |
17 | #include "param.h" |
18 | #include "systm.h" | |
19 | #include "mbuf.h" | |
20 | #include "buf.h" | |
21 | #include "protosw.h" | |
22 | #include "socket.h" | |
23 | #include "vmmac.h" | |
24 | #include "errno.h" | |
25 | #include "ioctl.h" | |
eaa60542 BJ |
26 | |
27 | #include "../net/if.h" | |
28 | #include "../net/netisr.h" | |
29 | #include "../net/route.h" | |
67eb6277 | 30 | |
67eb6277 | 31 | #ifdef INET |
d2cc167c BJ |
32 | #include "../netinet/in.h" |
33 | #include "../netinet/in_systm.h" | |
7f0e1e06 | 34 | #include "../netinet/in_var.h" |
d2cc167c | 35 | #include "../netinet/ip.h" |
67eb6277 MK |
36 | #endif |
37 | ||
b1b3e868 | 38 | #ifdef PUP |
d2cc167c | 39 | #include "../netpup/pup.h" |
3cb181be | 40 | #include "../netpup/ether.h" |
b1b3e868 | 41 | #endif |
eaa60542 | 42 | |
91712b0f KS |
43 | #ifdef NS |
44 | #include "../netns/ns.h" | |
45 | #include "../netns/ns_if.h" | |
46 | #endif | |
47 | ||
eaa60542 BJ |
48 | #include "../vax/cpu.h" |
49 | #include "../vax/mtpr.h" | |
a6e960e7 JB |
50 | #include "if_en.h" |
51 | #include "if_enreg.h" | |
52 | #include "if_uba.h" | |
eaa60542 BJ |
53 | #include "../vaxuba/ubareg.h" |
54 | #include "../vaxuba/ubavar.h" | |
8a13b737 | 55 | |
a453e1b5 | 56 | #define ENMTU (1024+512) |
dc39362e | 57 | #define ENMRU (1024+512+16) /* 16 is enough to receive trailer */ |
11720282 | 58 | |
11720282 BJ |
59 | int enprobe(), enattach(), enrint(), enxint(), encollide(); |
60 | struct uba_device *eninfo[NEN]; | |
61 | u_short enstd[] = { 0 }; | |
62 | struct uba_driver endriver = | |
b454c3ea | 63 | { enprobe, 0, enattach, 0, enstd, "en", eninfo }; |
11720282 BJ |
64 | #define ENUNIT(x) minor(x) |
65 | ||
47695a10 | 66 | int eninit(),enoutput(),enreset(),enioctl(); |
f1b2fa5b | 67 | |
c1b082c5 SL |
68 | #ifdef notdef |
69 | /* | |
70 | * If you need to byte swap IP's in the system, define | |
71 | * this and do a SIOCSIFFLAGS at boot time. | |
72 | */ | |
7f0e1e06 | 73 | #define ENF_SWABIPS 0x1000 |
c1b082c5 SL |
74 | #endif |
75 | ||
f1b2fa5b BJ |
76 | /* |
77 | * Ethernet software status per interface. | |
78 | * | |
79 | * Each interface is referenced by a network interface structure, | |
80 | * es_if, which the routing code uses to locate the interface. | |
81 | * This structure contains the output queue for the interface, its address, ... | |
82 | * We also have, for each interface, a UBA interface structure, which | |
83 | * contains information about the UNIBUS resources held by the interface: | |
84 | * map registers, buffered data paths, etc. Information is cached in this | |
85 | * structure for use by the if_uba.c routines in running the interface | |
86 | * efficiently. | |
87 | */ | |
8a13b737 | 88 | struct en_softc { |
f1b2fa5b BJ |
89 | struct ifnet es_if; /* network-visible interface */ |
90 | struct ifuba es_ifuba; /* UNIBUS resources */ | |
7fb445f3 | 91 | short es_host; /* hardware host number */ |
f1b2fa5b BJ |
92 | short es_delay; /* current output delay */ |
93 | short es_mask; /* mask for current output delay */ | |
0658a645 | 94 | short es_lastx; /* host last transmitted to */ |
f1b2fa5b BJ |
95 | short es_oactive; /* is output active? */ |
96 | short es_olen; /* length of last output */ | |
91712b0f | 97 | short es_nsactive; /* is interface enabled for ns? */ |
8a13b737 | 98 | } en_softc[NEN]; |
11720282 | 99 | |
f1b2fa5b BJ |
100 | /* |
101 | * Do output DMA to determine interface presence and | |
102 | * interrupt vector. DMA is too short to disturb other hosts. | |
103 | */ | |
11720282 BJ |
104 | enprobe(reg) |
105 | caddr_t reg; | |
106 | { | |
b454c3ea | 107 | register int br, cvec; /* r11, r10 value-result */ |
11720282 BJ |
108 | register struct endevice *addr = (struct endevice *)reg; |
109 | ||
110 | #ifdef lint | |
111 | br = 0; cvec = br; br = cvec; | |
2b4b57cd | 112 | enrint(0); enxint(0); encollide(0); |
11720282 | 113 | #endif |
11720282 | 114 | addr->en_istat = 0; |
11720282 BJ |
115 | addr->en_owc = -1; |
116 | addr->en_oba = 0; | |
941ee7ef | 117 | addr->en_ostat = EN_IEN|EN_GO; |
11720282 BJ |
118 | DELAY(100000); |
119 | addr->en_ostat = 0; | |
11720282 BJ |
120 | return (1); |
121 | } | |
122 | ||
f1b2fa5b BJ |
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 | */ | |
11720282 BJ |
128 | enattach(ui) |
129 | struct uba_device *ui; | |
130 | { | |
f1b2fa5b | 131 | register struct en_softc *es = &en_softc[ui->ui_unit]; |
f1b2fa5b BJ |
132 | |
133 | es->es_if.if_unit = ui->ui_unit; | |
b454c3ea | 134 | es->es_if.if_name = "en"; |
f1b2fa5b | 135 | es->es_if.if_mtu = ENMTU; |
7f0e1e06 | 136 | es->es_if.if_flags = IFF_BROADCAST; |
f1b2fa5b | 137 | es->es_if.if_init = eninit; |
b454c3ea | 138 | es->es_if.if_output = enoutput; |
47695a10 | 139 | es->es_if.if_ioctl = enioctl; |
51595ca2 | 140 | es->es_if.if_reset = enreset; |
d9c0644f | 141 | es->es_ifuba.ifu_flags = UBA_NEEDBDP | UBA_NEED16 | UBA_CANTWAIT; |
b4e3e570 SL |
142 | #if defined(VAX750) |
143 | /* don't chew up 750 bdp's */ | |
144 | if (cpu == VAX_750 && ui->ui_unit > 0) | |
145 | es->es_ifuba.ifu_flags &= ~UBA_NEEDBDP; | |
146 | #endif | |
405c9168 | 147 | if_attach(&es->es_if); |
11720282 BJ |
148 | } |
149 | ||
f1b2fa5b BJ |
150 | /* |
151 | * Reset of interface after UNIBUS reset. | |
152 | * If interface is on specified uba, reset its state. | |
153 | */ | |
154 | enreset(unit, uban) | |
155 | int unit, uban; | |
8a13b737 | 156 | { |
11720282 | 157 | register struct uba_device *ui; |
11720282 | 158 | |
b454c3ea BJ |
159 | if (unit >= NEN || (ui = eninfo[unit]) == 0 || ui->ui_alive == 0 || |
160 | ui->ui_ubanum != uban) | |
f1b2fa5b | 161 | return; |
b454c3ea | 162 | printf(" en%d", unit); |
f1b2fa5b BJ |
163 | eninit(unit); |
164 | } | |
165 | ||
166 | /* | |
167 | * Initialization of interface; clear recorded pending | |
168 | * operations, and reinitialize UNIBUS usage. | |
169 | */ | |
170 | eninit(unit) | |
171 | int unit; | |
172 | { | |
b454c3ea BJ |
173 | register struct en_softc *es = &en_softc[unit]; |
174 | register struct uba_device *ui = eninfo[unit]; | |
f1b2fa5b | 175 | register struct endevice *addr; |
47695a10 | 176 | int s; |
f1b2fa5b | 177 | |
7f0e1e06 | 178 | if (es->es_if.if_addrlist == (struct ifaddr *)0) |
732fb59b | 179 | return; |
f1b2fa5b | 180 | if (if_ubainit(&es->es_ifuba, ui->ui_ubanum, |
dc39362e | 181 | sizeof (struct en_header), (int)btoc(ENMRU)) == 0) { |
b454c3ea | 182 | printf("en%d: can't initialize\n", unit); |
ee787340 | 183 | es->es_if.if_flags &= ~IFF_UP; |
8a13b737 | 184 | return; |
11720282 | 185 | } |
11720282 | 186 | addr = (struct endevice *)ui->ui_addr; |
8a13b737 | 187 | addr->en_istat = addr->en_ostat = 0; |
11720282 | 188 | |
f1b2fa5b | 189 | /* |
b454c3ea BJ |
190 | * Hang a receive and start any |
191 | * pending writes by faking a transmit complete. | |
f1b2fa5b BJ |
192 | */ |
193 | s = splimp(); | |
b454c3ea | 194 | addr->en_iba = es->es_ifuba.ifu_r.ifrw_info; |
dc39362e | 195 | addr->en_iwc = -(sizeof (struct en_header) + ENMRU) >> 1; |
b454c3ea BJ |
196 | addr->en_istat = EN_IEN|EN_GO; |
197 | es->es_oactive = 1; | |
7f0e1e06 | 198 | es->es_if.if_flags |= IFF_RUNNING; |
f1b2fa5b BJ |
199 | enxint(unit); |
200 | splx(s); | |
11720282 BJ |
201 | } |
202 | ||
0658a645 | 203 | int enalldelay = 0; |
4c073c48 | 204 | int enlastdel = 50; |
0658a645 | 205 | int enlastmask = (~0) << 5; |
8a13b737 | 206 | |
f1b2fa5b BJ |
207 | /* |
208 | * Start or restart output on interface. | |
209 | * If interface is already active, then this is a retransmit | |
210 | * after a collision, and just restuff registers and delay. | |
211 | * If interface is not already active, get another datagram | |
212 | * to send off of the interface queue, and map it to the interface | |
213 | * before starting the output. | |
214 | */ | |
ae348eea | 215 | enstart(dev) |
11720282 BJ |
216 | dev_t dev; |
217 | { | |
b454c3ea BJ |
218 | int unit = ENUNIT(dev); |
219 | struct uba_device *ui = eninfo[unit]; | |
220 | register struct en_softc *es = &en_softc[unit]; | |
8a13b737 | 221 | register struct endevice *addr; |
7fb445f3 | 222 | register struct en_header *en; |
8a13b737 BJ |
223 | struct mbuf *m; |
224 | int dest; | |
11720282 | 225 | |
8a13b737 BJ |
226 | if (es->es_oactive) |
227 | goto restart; | |
f1b2fa5b BJ |
228 | |
229 | /* | |
230 | * Not already active: dequeue another request | |
231 | * and map it to the UNIBUS. If no more requests, | |
232 | * just return. | |
233 | */ | |
234 | IF_DEQUEUE(&es->es_if.if_snd, m); | |
8a13b737 BJ |
235 | if (m == 0) { |
236 | es->es_oactive = 0; | |
11720282 BJ |
237 | return; |
238 | } | |
7fb445f3 MK |
239 | en = mtod(m, struct en_header *); |
240 | dest = en->en_dhost; | |
241 | en->en_shost = es->es_host; | |
8a13b737 | 242 | es->es_olen = if_wubaput(&es->es_ifuba, m); |
c1b082c5 SL |
243 | #ifdef ENF_SWABIPS |
244 | /* | |
245 | * The Xerox interface does word at a time DMA, so | |
246 | * someone must do byte swapping of user data if high | |
247 | * and low ender machines are to communicate. It doesn't | |
248 | * belong here, but certain people depend on it, so... | |
249 | * | |
250 | * Should swab everybody, but this is a kludge anyway. | |
251 | */ | |
252 | if (es->es_if.if_flags & ENF_SWABIPS) { | |
c1b082c5 SL |
253 | en = (struct en_header *)es->es_ifuba.ifu_w.ifrw_addr; |
254 | if (en->en_type == ENTYPE_IP) | |
255 | enswab((caddr_t)(en + 1), (caddr_t)(en + 1), | |
256 | es->es_olen - sizeof (struct en_header) + 1); | |
257 | } | |
258 | #endif | |
f1b2fa5b BJ |
259 | |
260 | /* | |
261 | * Ethernet cannot take back-to-back packets (no | |
0658a645 BJ |
262 | * buffering in interface. To help avoid overrunning |
263 | * receivers, enforce a small delay (about 1ms) in interface: | |
264 | * * between all packets when enalldelay | |
265 | * * whenever last packet was broadcast | |
266 | * * whenever this packet is to same host as last packet | |
f1b2fa5b | 267 | */ |
0658a645 | 268 | if (enalldelay || es->es_lastx == 0 || es->es_lastx == dest) { |
8a13b737 | 269 | es->es_delay = enlastdel; |
0658a645 BJ |
270 | es->es_mask = enlastmask; |
271 | } | |
272 | es->es_lastx = dest; | |
f1b2fa5b | 273 | |
8a13b737 | 274 | restart: |
f1b2fa5b BJ |
275 | /* |
276 | * Have request mapped to UNIBUS for transmission. | |
277 | * Purge any stale data from this BDP, and start the otput. | |
278 | */ | |
ee787340 SL |
279 | if (es->es_ifuba.ifu_flags & UBA_NEEDBDP) |
280 | UBAPURGE(es->es_ifuba.ifu_uba, es->es_ifuba.ifu_w.ifrw_bdp); | |
11720282 | 281 | addr = (struct endevice *)ui->ui_addr; |
405c9168 | 282 | addr->en_oba = (int)es->es_ifuba.ifu_w.ifrw_info; |
8a13b737 BJ |
283 | addr->en_odelay = es->es_delay; |
284 | addr->en_owc = -((es->es_olen + 1) >> 1); | |
941ee7ef | 285 | addr->en_ostat = EN_IEN|EN_GO; |
8a13b737 | 286 | es->es_oactive = 1; |
11720282 BJ |
287 | } |
288 | ||
f1b2fa5b BJ |
289 | /* |
290 | * Ethernet interface transmitter interrupt. | |
291 | * Start another output if more data to send. | |
292 | */ | |
11720282 BJ |
293 | enxint(unit) |
294 | int unit; | |
295 | { | |
b454c3ea BJ |
296 | register struct uba_device *ui = eninfo[unit]; |
297 | register struct en_softc *es = &en_softc[unit]; | |
519a1ecf | 298 | register struct endevice *addr = (struct endevice *)ui->ui_addr; |
11720282 | 299 | |
8a13b737 BJ |
300 | if (es->es_oactive == 0) |
301 | return; | |
519a1ecf | 302 | if (es->es_mask && (addr->en_ostat&EN_OERROR)) { |
89413846 | 303 | es->es_if.if_oerrors++; |
519a1ecf BJ |
304 | endocoll(unit); |
305 | return; | |
89413846 | 306 | } |
519a1ecf BJ |
307 | es->es_if.if_opackets++; |
308 | es->es_oactive = 0; | |
309 | es->es_delay = 0; | |
310 | es->es_mask = ~0; | |
7a66118b BJ |
311 | if (es->es_ifuba.ifu_xtofree) { |
312 | m_freem(es->es_ifuba.ifu_xtofree); | |
313 | es->es_ifuba.ifu_xtofree = 0; | |
314 | } | |
f1b2fa5b | 315 | if (es->es_if.if_snd.ifq_head == 0) { |
0658a645 | 316 | es->es_lastx = 256; /* putatively illegal */ |
11720282 BJ |
317 | return; |
318 | } | |
8a13b737 | 319 | enstart(unit); |
11720282 BJ |
320 | } |
321 | ||
f1b2fa5b BJ |
322 | /* |
323 | * Collision on ethernet interface. Do exponential | |
324 | * backoff, and retransmit. If have backed off all | |
ee787340 | 325 | * the way print warning diagnostic, and drop packet. |
f1b2fa5b | 326 | */ |
11720282 BJ |
327 | encollide(unit) |
328 | int unit; | |
329 | { | |
519a1ecf | 330 | struct en_softc *es = &en_softc[unit]; |
11720282 | 331 | |
f1b2fa5b | 332 | es->es_if.if_collisions++; |
8a13b737 | 333 | if (es->es_oactive == 0) |
11720282 | 334 | return; |
519a1ecf BJ |
335 | endocoll(unit); |
336 | } | |
337 | ||
338 | endocoll(unit) | |
339 | int unit; | |
340 | { | |
341 | register struct en_softc *es = &en_softc[unit]; | |
342 | ||
b454c3ea BJ |
343 | /* |
344 | * Es_mask is a 16 bit number with n low zero bits, with | |
345 | * n the number of backoffs. When es_mask is 0 we have | |
346 | * backed off 16 times, and give up. | |
347 | */ | |
8a13b737 | 348 | if (es->es_mask == 0) { |
a453e1b5 | 349 | printf("en%d: send error\n", unit); |
8a13b737 | 350 | enxint(unit); |
b454c3ea | 351 | return; |
11720282 | 352 | } |
b454c3ea BJ |
353 | /* |
354 | * Another backoff. Restart with delay based on n low bits | |
355 | * of the interval timer. | |
356 | */ | |
357 | es->es_mask <<= 1; | |
358 | es->es_delay = mfpr(ICR) &~ es->es_mask; | |
359 | enstart(unit); | |
11720282 BJ |
360 | } |
361 | ||
3cb181be SL |
362 | #ifdef notdef |
363 | struct sockproto enproto = { AF_ETHERLINK }; | |
364 | struct sockaddr_en endst = { AF_ETHERLINK }; | |
365 | struct sockaddr_en ensrc = { AF_ETHERLINK }; | |
366 | #endif | |
f1b2fa5b BJ |
367 | /* |
368 | * Ethernet interface receiver interrupt. | |
369 | * If input error just drop packet. | |
370 | * Otherwise purge input buffered data path and examine | |
371 | * packet to determine type. If can't determine length | |
372 | * from type, then have to drop packet. Othewise decapsulate | |
373 | * packet based on type and pass to type specific higher-level | |
374 | * input routine. | |
375 | */ | |
11720282 BJ |
376 | enrint(unit) |
377 | int unit; | |
378 | { | |
b454c3ea BJ |
379 | register struct en_softc *es = &en_softc[unit]; |
380 | struct endevice *addr = (struct endevice *)eninfo[unit]->ui_addr; | |
381 | register struct en_header *en; | |
8a13b737 | 382 | struct mbuf *m; |
038ee561 | 383 | int len; short resid; |
b454c3ea | 384 | register struct ifqueue *inq; |
51c7d639 | 385 | int off, s; |
11720282 | 386 | |
b454c3ea | 387 | es->es_if.if_ipackets++; |
f1b2fa5b BJ |
388 | |
389 | /* | |
b454c3ea | 390 | * Purge BDP; drop if input error indicated. |
f1b2fa5b | 391 | */ |
ee787340 SL |
392 | if (es->es_ifuba.ifu_flags & UBA_NEEDBDP) |
393 | UBAPURGE(es->es_ifuba.ifu_uba, es->es_ifuba.ifu_r.ifrw_bdp); | |
941ee7ef | 394 | if (addr->en_istat&EN_IERROR) { |
f1b2fa5b | 395 | es->es_if.if_ierrors++; |
8a13b737 | 396 | goto setup; |
11720282 | 397 | } |
f1b2fa5b BJ |
398 | |
399 | /* | |
0658a645 | 400 | * Calculate input data length. |
f1b2fa5b BJ |
401 | * Get pointer to ethernet header (in input buffer). |
402 | * Deal with trailer protocol: if type is PUP trailer | |
403 | * get true type from first 16-bit word past data. | |
404 | * Remember that type was trailer by setting off. | |
405 | */ | |
0658a645 BJ |
406 | resid = addr->en_iwc; |
407 | if (resid) | |
408 | resid |= 0176000; | |
dc39362e | 409 | len = (((sizeof (struct en_header) + ENMRU) >> 1) + resid) << 1; |
0658a645 | 410 | len -= sizeof (struct en_header); |
dc39362e | 411 | if (len > ENMRU) |
0658a645 | 412 | goto setup; /* sanity */ |
f1b2fa5b | 413 | en = (struct en_header *)(es->es_ifuba.ifu_r.ifrw_addr); |
991f6240 | 414 | en->en_type = ntohs(en->en_type); |
8a13b737 | 415 | #define endataaddr(en, off, type) ((type)(((caddr_t)((en)+1)+(off)))) |
991f6240 SL |
416 | if (en->en_type >= ENTYPE_TRAIL && |
417 | en->en_type < ENTYPE_TRAIL+ENTYPE_NTRAILER) { | |
418 | off = (en->en_type - ENTYPE_TRAIL) * 512; | |
dc39362e | 419 | if (off > ENMTU) |
b454c3ea | 420 | goto setup; /* sanity */ |
991f6240 SL |
421 | en->en_type = ntohs(*endataaddr(en, off, u_short *)); |
422 | resid = ntohs(*(endataaddr(en, off+2, u_short *))); | |
0658a645 BJ |
423 | if (off + resid > len) |
424 | goto setup; /* sanity */ | |
425 | len = off + resid; | |
8a13b737 BJ |
426 | } else |
427 | off = 0; | |
8a13b737 BJ |
428 | if (len == 0) |
429 | goto setup; | |
c1b082c5 SL |
430 | #ifdef ENF_SWABIPS |
431 | if (es->es_if.if_flags & ENF_SWABIPS && en->en_type == ENTYPE_IP) | |
432 | enswab((caddr_t)(en + 1), (caddr_t)(en + 1), len); | |
433 | #endif | |
f1b2fa5b BJ |
434 | /* |
435 | * Pull packet off interface. Off is nonzero if packet | |
436 | * has trailing header; if_rubaget will then force this header | |
437 | * information to be at the front, but we still have to drop | |
0658a645 | 438 | * the type and length which are at the front of any trailer data. |
f1b2fa5b | 439 | */ |
67eb6277 | 440 | m = if_rubaget(&es->es_ifuba, len, off, &es->es_if); |
a453e1b5 BJ |
441 | if (m == 0) |
442 | goto setup; | |
f1b2fa5b | 443 | if (off) { |
67eb6277 MK |
444 | struct ifnet *ifp; |
445 | ||
446 | ifp = *(mtod(m, struct ifnet **)); | |
0658a645 BJ |
447 | m->m_off += 2 * sizeof (u_short); |
448 | m->m_len -= 2 * sizeof (u_short); | |
67eb6277 | 449 | *(mtod(m, struct ifnet **)) = ifp; |
f1b2fa5b | 450 | } |
31c2345c SL |
451 | switch (en->en_type) { |
452 | ||
453 | #ifdef INET | |
991f6240 | 454 | case ENTYPE_IP: |
9c8692e9 | 455 | schednetisr(NETISR_IP); |
31c2345c SL |
456 | inq = &ipintrq; |
457 | break; | |
458 | #endif | |
ee787340 | 459 | #ifdef PUP |
3cb181be SL |
460 | case ENTYPE_PUP: |
461 | rpup_input(m); | |
31c2345c | 462 | goto setup; |
ee787340 | 463 | #endif |
91712b0f KS |
464 | #ifdef NS |
465 | case ETHERTYPE_NS: | |
466 | if (es->es_nsactive) { | |
467 | schednetisr(NETISR_NS); | |
468 | inq = &nsintrq; | |
469 | } else { | |
470 | m_freem(m); | |
471 | goto setup; | |
472 | } | |
473 | break; | |
474 | #endif | |
475 | ||
c8f8184f | 476 | default: |
3cb181be SL |
477 | #ifdef notdef |
478 | enproto.sp_protocol = en->en_type; | |
479 | endst.sen_host = en->en_dhost; | |
480 | endst.sen_net = ensrc.sen_net = es->es_if.if_net; | |
481 | ensrc.sen_host = en->en_shost; | |
482 | raw_input(m, &enproto, | |
483 | (struct sockaddr *)&ensrc, (struct sockaddr *)&endst); | |
484 | #else | |
c8f8184f | 485 | m_freem(m); |
3cb181be | 486 | #endif |
c8f8184f | 487 | goto setup; |
ee787340 SL |
488 | } |
489 | ||
51c7d639 | 490 | s = splimp(); |
1e977657 BJ |
491 | if (IF_QFULL(inq)) { |
492 | IF_DROP(inq); | |
ee787340 | 493 | m_freem(m); |
1e977657 BJ |
494 | } else |
495 | IF_ENQUEUE(inq, m); | |
51c7d639 | 496 | splx(s); |
f1b2fa5b | 497 | |
ae348eea | 498 | setup: |
f1b2fa5b BJ |
499 | /* |
500 | * Reset for next packet. | |
501 | */ | |
502 | addr->en_iba = es->es_ifuba.ifu_r.ifrw_info; | |
dc39362e | 503 | addr->en_iwc = -(sizeof (struct en_header) + ENMRU) >> 1; |
941ee7ef | 504 | addr->en_istat = EN_IEN|EN_GO; |
ae348eea | 505 | } |
11720282 | 506 | |
8a13b737 BJ |
507 | /* |
508 | * Ethernet output routine. | |
509 | * Encapsulate a packet of type family for the local net. | |
f1b2fa5b BJ |
510 | * Use trailer local net encapsulation if enough data in first |
511 | * packet leaves a multiple of 512 bytes of data in remainder. | |
8a13b737 | 512 | */ |
ee787340 | 513 | enoutput(ifp, m0, dst) |
8a13b737 BJ |
514 | struct ifnet *ifp; |
515 | struct mbuf *m0; | |
ee787340 | 516 | struct sockaddr *dst; |
11720282 | 517 | { |
8a2f82db | 518 | int type, dest, s, error; |
f1b2fa5b | 519 | register struct mbuf *m = m0; |
8a13b737 | 520 | register struct en_header *en; |
ee787340 | 521 | register int off; |
8a13b737 | 522 | |
0f487295 MK |
523 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { |
524 | error = ENETDOWN; | |
525 | goto bad; | |
526 | } | |
ee787340 | 527 | switch (dst->sa_family) { |
11720282 | 528 | |
8a13b737 | 529 | #ifdef INET |
ee787340 | 530 | case AF_INET: |
7f0e1e06 MK |
531 | { |
532 | struct in_addr in; | |
533 | ||
534 | in = ((struct sockaddr_in *)dst)->sin_addr; | |
535 | if (in_broadcast(in)) | |
536 | dest = EN_BROADCAST; | |
537 | else | |
538 | dest = in_lnaof(in); | |
539 | } | |
540 | if (dest >= 0x100) { | |
8a2f82db | 541 | error = EPERM; /* ??? */ |
3734056d | 542 | goto bad; |
8a2f82db | 543 | } |
ee787340 | 544 | off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len; |
47695a10 SL |
545 | /* need per host negotiation */ |
546 | if ((ifp->if_flags & IFF_NOTRAILERS) == 0) | |
ee787340 | 547 | if (off > 0 && (off & 0x1ff) == 0 && |
0658a645 | 548 | m->m_off >= MMINOFF + 2 * sizeof (u_short)) { |
991f6240 | 549 | type = ENTYPE_TRAIL + (off>>9); |
0658a645 BJ |
550 | m->m_off -= 2 * sizeof (u_short); |
551 | m->m_len += 2 * sizeof (u_short); | |
991f6240 SL |
552 | *mtod(m, u_short *) = htons((u_short)ENTYPE_IP); |
553 | *(mtod(m, u_short *) + 1) = ntohs((u_short)m->m_len); | |
f1b2fa5b | 554 | goto gottrailertype; |
8a13b737 | 555 | } |
991f6240 | 556 | type = ENTYPE_IP; |
f1b2fa5b BJ |
557 | off = 0; |
558 | goto gottype; | |
8a13b737 | 559 | #endif |
91712b0f KS |
560 | #ifdef NS |
561 | case AF_NS: | |
562 | { | |
563 | u_char *up; | |
564 | ||
565 | type = ETHERTYPE_NS; | |
566 | up = ((struct sockaddr_ns *)dst)->sns_addr.x_host.c_host; | |
567 | if (*up & 1) | |
568 | dest = EN_BROADCAST; | |
569 | else | |
570 | dest = up[5]; | |
571 | ||
572 | off = 0; | |
573 | goto gottype; | |
574 | } | |
575 | #endif | |
31c2345c | 576 | #ifdef PUP |
ee787340 | 577 | case AF_PUP: |
1c1d4563 | 578 | dest = ((struct sockaddr_pup *)dst)->spup_host; |
991f6240 | 579 | type = ENTYPE_PUP; |
31c2345c SL |
580 | off = 0; |
581 | goto gottype; | |
31c2345c | 582 | #endif |
8a13b737 | 583 | |
3cb181be SL |
584 | #ifdef notdef |
585 | case AF_ETHERLINK: | |
586 | goto gotheader; | |
587 | #endif | |
588 | ||
8a13b737 | 589 | default: |
ee787340 SL |
590 | printf("en%d: can't handle af%d\n", ifp->if_unit, |
591 | dst->sa_family); | |
8a2f82db SL |
592 | error = EAFNOSUPPORT; |
593 | goto bad; | |
8a13b737 | 594 | } |
f1b2fa5b | 595 | |
b454c3ea | 596 | gottrailertype: |
f1b2fa5b BJ |
597 | /* |
598 | * Packet to be sent as trailer: move first packet | |
599 | * (control information) to end of chain. | |
600 | */ | |
f1b2fa5b BJ |
601 | while (m->m_next) |
602 | m = m->m_next; | |
603 | m->m_next = m0; | |
604 | m = m0->m_next; | |
605 | m0->m_next = 0; | |
b454c3ea | 606 | m0 = m; |
f1b2fa5b | 607 | |
b454c3ea | 608 | gottype: |
f1b2fa5b BJ |
609 | /* |
610 | * Add local net header. If no space in first mbuf, | |
611 | * allocate another. | |
612 | */ | |
a453e1b5 BJ |
613 | if (m->m_off > MMAXOFF || |
614 | MMINOFF + sizeof (struct en_header) > m->m_off) { | |
b994ed6a | 615 | MGET(m, M_DONTWAIT, MT_HEADER); |
8a13b737 | 616 | if (m == 0) { |
8a2f82db SL |
617 | error = ENOBUFS; |
618 | goto bad; | |
8a13b737 BJ |
619 | } |
620 | m->m_next = m0; | |
621 | m->m_off = MMINOFF; | |
622 | m->m_len = sizeof (struct en_header); | |
623 | } else { | |
8a13b737 BJ |
624 | m->m_off -= sizeof (struct en_header); |
625 | m->m_len += sizeof (struct en_header); | |
11720282 | 626 | } |
8a13b737 | 627 | en = mtod(m, struct en_header *); |
7fb445f3 | 628 | /* add en_shost later */ |
8a13b737 | 629 | en->en_dhost = dest; |
991f6240 | 630 | en->en_type = htons((u_short)type); |
f1b2fa5b | 631 | |
67eb6277 | 632 | #ifdef notdef |
3cb181be | 633 | gotheader: |
67eb6277 | 634 | #endif |
f1b2fa5b BJ |
635 | /* |
636 | * Queue message on interface, and start output if interface | |
637 | * not yet active. | |
638 | */ | |
8a13b737 | 639 | s = splimp(); |
1e977657 BJ |
640 | if (IF_QFULL(&ifp->if_snd)) { |
641 | IF_DROP(&ifp->if_snd); | |
8a2f82db SL |
642 | error = ENOBUFS; |
643 | goto qfull; | |
1e977657 | 644 | } |
8a13b737 | 645 | IF_ENQUEUE(&ifp->if_snd, m); |
8a13b737 BJ |
646 | if (en_softc[ifp->if_unit].es_oactive == 0) |
647 | enstart(ifp->if_unit); | |
89413846 | 648 | splx(s); |
4e818526 | 649 | return (0); |
8a2f82db SL |
650 | qfull: |
651 | m0 = m; | |
652 | splx(s); | |
653 | bad: | |
654 | m_freem(m0); | |
655 | return (error); | |
11720282 | 656 | } |
47695a10 SL |
657 | |
658 | /* | |
659 | * Process an ioctl request. | |
660 | */ | |
661 | enioctl(ifp, cmd, data) | |
662 | register struct ifnet *ifp; | |
663 | int cmd; | |
664 | caddr_t data; | |
665 | { | |
7f0e1e06 MK |
666 | register struct en_softc *es = ((struct en_softc *)ifp); |
667 | struct ifaddr *ifa = (struct ifaddr *) data; | |
47695a10 | 668 | int s = splimp(), error = 0; |
7f0e1e06 | 669 | struct endevice *enaddr; |
47695a10 SL |
670 | |
671 | switch (cmd) { | |
672 | ||
673 | case SIOCSIFADDR: | |
7f0e1e06 MK |
674 | enaddr = (struct endevice *)eninfo[ifp->if_unit]->ui_addr; |
675 | es->es_host = (~enaddr->en_addr) & 0xff; | |
676 | /* | |
677 | * Attempt to check agreement of protocol address | |
678 | * and board address. | |
679 | */ | |
680 | switch (ifa->ifa_addr.sa_family) { | |
681 | case AF_INET: | |
682 | if (in_lnaof(IA_SIN(ifa)->sin_addr) != es->es_host) | |
683 | return (EADDRNOTAVAIL); | |
684 | break; | |
91712b0f KS |
685 | #ifdef NS |
686 | case AF_NS: | |
687 | if (IA_SNS(ifa)->sns_addr.x_host.c_host[5] | |
688 | != es->es_host) | |
689 | return (EADDRNOTAVAIL); | |
690 | es->es_nsactive = 1; | |
691 | break; | |
692 | #endif | |
7f0e1e06 MK |
693 | } |
694 | ifp->if_flags |= IFF_UP; | |
695 | if ((ifp->if_flags & IFF_RUNNING) == 0) | |
47695a10 SL |
696 | eninit(ifp->if_unit); |
697 | break; | |
698 | ||
699 | default: | |
700 | error = EINVAL; | |
67eb6277 | 701 | break; |
47695a10 SL |
702 | } |
703 | splx(s); | |
704 | return (error); | |
705 | } | |
706 | ||
c1b082c5 SL |
707 | #ifdef ENF_SWABIPS |
708 | /* | |
709 | * Swab bytes | |
710 | * Jeffrey Mogul, Stanford | |
711 | */ | |
712 | enswab(from, to, n) | |
7f0e1e06 | 713 | register unsigned char *from, *to; |
c1b082c5 SL |
714 | register int n; |
715 | { | |
716 | register unsigned long temp; | |
7f0e1e06 MK |
717 | |
718 | if ((n <= 0) || (n > 0xFFFF)) { | |
719 | printf("enswab: bad len %d\n", n); | |
720 | return; | |
721 | } | |
c1b082c5 SL |
722 | |
723 | n >>= 1; n++; | |
7f0e1e06 | 724 | #define STEP {temp = *from++;*to++ = *from++;*to++ = temp;} |
c1b082c5 SL |
725 | /* round to multiple of 8 */ |
726 | while ((--n) & 07) | |
727 | STEP; | |
728 | n >>= 3; | |
729 | while (--n >= 0) { | |
730 | STEP; STEP; STEP; STEP; | |
731 | STEP; STEP; STEP; STEP; | |
732 | } | |
733 | } | |
734 | #endif | |
9a0b0c74 | 735 | #endif |