Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
2eb4e665 | 2 | * Copyright (c) 1982, 1986 Regents of the University of California. |
5f9369d6 | 3 | * All rights reserved. |
da7c5cc6 | 4 | * |
1326eec7 | 5 | * %sccs.include.redist.c% |
5f9369d6 | 6 | * |
1326eec7 | 7 | * @(#)if_en.c 7.6 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
11720282 BJ |
9 | |
10 | #include "en.h" | |
9a0b0c74 | 11 | #if NEN > 0 |
f1b2fa5b | 12 | |
11720282 | 13 | /* |
f1b2fa5b | 14 | * Xerox prototype (3 Mb) Ethernet interface driver. |
11720282 | 15 | */ |
c18e27ed | 16 | #include "machine/pte.h" |
11720282 | 17 | |
a6e960e7 JB |
18 | #include "param.h" |
19 | #include "systm.h" | |
20 | #include "mbuf.h" | |
21 | #include "buf.h" | |
22 | #include "protosw.h" | |
23 | #include "socket.h" | |
24 | #include "vmmac.h" | |
25 | #include "errno.h" | |
26 | #include "ioctl.h" | |
eaa60542 BJ |
27 | |
28 | #include "../net/if.h" | |
29 | #include "../net/netisr.h" | |
30 | #include "../net/route.h" | |
67eb6277 | 31 | |
67eb6277 | 32 | #ifdef INET |
d2cc167c BJ |
33 | #include "../netinet/in.h" |
34 | #include "../netinet/in_systm.h" | |
7f0e1e06 | 35 | #include "../netinet/in_var.h" |
d2cc167c | 36 | #include "../netinet/ip.h" |
67eb6277 MK |
37 | #endif |
38 | ||
b1b3e868 | 39 | #ifdef PUP |
d2cc167c | 40 | #include "../netpup/pup.h" |
3cb181be | 41 | #include "../netpup/ether.h" |
b1b3e868 | 42 | #endif |
eaa60542 | 43 | |
91712b0f KS |
44 | #ifdef NS |
45 | #include "../netns/ns.h" | |
46 | #include "../netns/ns_if.h" | |
47 | #endif | |
48 | ||
eaa60542 BJ |
49 | #include "../vax/cpu.h" |
50 | #include "../vax/mtpr.h" | |
a6e960e7 JB |
51 | #include "if_en.h" |
52 | #include "if_enreg.h" | |
53 | #include "if_uba.h" | |
eaa60542 BJ |
54 | #include "../vaxuba/ubareg.h" |
55 | #include "../vaxuba/ubavar.h" | |
8a13b737 | 56 | |
a453e1b5 | 57 | #define ENMTU (1024+512) |
dc39362e | 58 | #define ENMRU (1024+512+16) /* 16 is enough to receive trailer */ |
11720282 | 59 | |
11720282 BJ |
60 | int enprobe(), enattach(), enrint(), enxint(), encollide(); |
61 | struct uba_device *eninfo[NEN]; | |
62 | u_short enstd[] = { 0 }; | |
63 | struct uba_driver endriver = | |
b454c3ea | 64 | { enprobe, 0, enattach, 0, enstd, "en", eninfo }; |
11720282 BJ |
65 | #define ENUNIT(x) minor(x) |
66 | ||
95cfbc58 | 67 | int eninit(),oldenoutput(),enreset(),enioctl(), enstart(); |
f1b2fa5b | 68 | |
c1b082c5 SL |
69 | #ifdef notdef |
70 | /* | |
71 | * If you need to byte swap IP's in the system, define | |
72 | * this and do a SIOCSIFFLAGS at boot time. | |
73 | */ | |
7f0e1e06 | 74 | #define ENF_SWABIPS 0x1000 |
c1b082c5 SL |
75 | #endif |
76 | ||
f1b2fa5b BJ |
77 | /* |
78 | * Ethernet software status per interface. | |
79 | * | |
80 | * Each interface is referenced by a network interface structure, | |
81 | * es_if, which the routing code uses to locate the interface. | |
82 | * This structure contains the output queue for the interface, its address, ... | |
83 | * We also have, for each interface, a UBA interface structure, which | |
84 | * contains information about the UNIBUS resources held by the interface: | |
85 | * map registers, buffered data paths, etc. Information is cached in this | |
86 | * structure for use by the if_uba.c routines in running the interface | |
87 | * efficiently. | |
88 | */ | |
8a13b737 | 89 | struct en_softc { |
f1b2fa5b BJ |
90 | struct ifnet es_if; /* network-visible interface */ |
91 | struct ifuba es_ifuba; /* UNIBUS resources */ | |
7fb445f3 | 92 | short es_host; /* hardware host number */ |
f1b2fa5b BJ |
93 | short es_delay; /* current output delay */ |
94 | short es_mask; /* mask for current output delay */ | |
0658a645 | 95 | short es_lastx; /* host last transmitted to */ |
f1b2fa5b BJ |
96 | short es_oactive; /* is output active? */ |
97 | short es_olen; /* length of last output */ | |
91712b0f | 98 | short es_nsactive; /* is interface enabled for ns? */ |
8a13b737 | 99 | } en_softc[NEN]; |
11720282 | 100 | |
f1b2fa5b BJ |
101 | /* |
102 | * Do output DMA to determine interface presence and | |
103 | * interrupt vector. DMA is too short to disturb other hosts. | |
104 | */ | |
11720282 BJ |
105 | enprobe(reg) |
106 | caddr_t reg; | |
107 | { | |
b454c3ea | 108 | register int br, cvec; /* r11, r10 value-result */ |
11720282 BJ |
109 | register struct endevice *addr = (struct endevice *)reg; |
110 | ||
111 | #ifdef lint | |
112 | br = 0; cvec = br; br = cvec; | |
2b4b57cd | 113 | enrint(0); enxint(0); encollide(0); |
11720282 | 114 | #endif |
11720282 | 115 | addr->en_istat = 0; |
11720282 BJ |
116 | addr->en_owc = -1; |
117 | addr->en_oba = 0; | |
941ee7ef | 118 | addr->en_ostat = EN_IEN|EN_GO; |
11720282 BJ |
119 | DELAY(100000); |
120 | addr->en_ostat = 0; | |
11720282 BJ |
121 | return (1); |
122 | } | |
123 | ||
f1b2fa5b BJ |
124 | /* |
125 | * Interface exists: make available by filling in network interface | |
126 | * record. System will initialize the interface when it is ready | |
127 | * to accept packets. | |
128 | */ | |
11720282 BJ |
129 | enattach(ui) |
130 | struct uba_device *ui; | |
131 | { | |
f1b2fa5b | 132 | register struct en_softc *es = &en_softc[ui->ui_unit]; |
f1b2fa5b BJ |
133 | |
134 | es->es_if.if_unit = ui->ui_unit; | |
b454c3ea | 135 | es->es_if.if_name = "en"; |
f1b2fa5b | 136 | es->es_if.if_mtu = ENMTU; |
7f0e1e06 | 137 | es->es_if.if_flags = IFF_BROADCAST; |
f1b2fa5b | 138 | es->es_if.if_init = eninit; |
95cfbc58 KS |
139 | es->es_if.if_output = oldenoutput; |
140 | es->es_if.if_start = enstart; | |
47695a10 | 141 | es->es_if.if_ioctl = enioctl; |
51595ca2 | 142 | es->es_if.if_reset = enreset; |
d9c0644f | 143 | es->es_ifuba.ifu_flags = UBA_NEEDBDP | UBA_NEED16 | UBA_CANTWAIT; |
b4e3e570 SL |
144 | #if defined(VAX750) |
145 | /* don't chew up 750 bdp's */ | |
146 | if (cpu == VAX_750 && ui->ui_unit > 0) | |
147 | es->es_ifuba.ifu_flags &= ~UBA_NEEDBDP; | |
148 | #endif | |
405c9168 | 149 | if_attach(&es->es_if); |
11720282 BJ |
150 | } |
151 | ||
f1b2fa5b BJ |
152 | /* |
153 | * Reset of interface after UNIBUS reset. | |
154 | * If interface is on specified uba, reset its state. | |
155 | */ | |
156 | enreset(unit, uban) | |
157 | int unit, uban; | |
8a13b737 | 158 | { |
11720282 | 159 | register struct uba_device *ui; |
11720282 | 160 | |
b454c3ea BJ |
161 | if (unit >= NEN || (ui = eninfo[unit]) == 0 || ui->ui_alive == 0 || |
162 | ui->ui_ubanum != uban) | |
f1b2fa5b | 163 | return; |
b454c3ea | 164 | printf(" en%d", unit); |
f1b2fa5b BJ |
165 | eninit(unit); |
166 | } | |
167 | ||
168 | /* | |
169 | * Initialization of interface; clear recorded pending | |
170 | * operations, and reinitialize UNIBUS usage. | |
171 | */ | |
172 | eninit(unit) | |
173 | int unit; | |
174 | { | |
b454c3ea BJ |
175 | register struct en_softc *es = &en_softc[unit]; |
176 | register struct uba_device *ui = eninfo[unit]; | |
f1b2fa5b | 177 | register struct endevice *addr; |
47695a10 | 178 | int s; |
f1b2fa5b | 179 | |
7f0e1e06 | 180 | if (es->es_if.if_addrlist == (struct ifaddr *)0) |
732fb59b | 181 | return; |
f1b2fa5b | 182 | if (if_ubainit(&es->es_ifuba, ui->ui_ubanum, |
dc39362e | 183 | sizeof (struct en_header), (int)btoc(ENMRU)) == 0) { |
b454c3ea | 184 | printf("en%d: can't initialize\n", unit); |
ee787340 | 185 | es->es_if.if_flags &= ~IFF_UP; |
8a13b737 | 186 | return; |
11720282 | 187 | } |
11720282 | 188 | addr = (struct endevice *)ui->ui_addr; |
8a13b737 | 189 | addr->en_istat = addr->en_ostat = 0; |
11720282 | 190 | |
f1b2fa5b | 191 | /* |
b454c3ea BJ |
192 | * Hang a receive and start any |
193 | * pending writes by faking a transmit complete. | |
f1b2fa5b BJ |
194 | */ |
195 | s = splimp(); | |
b454c3ea | 196 | addr->en_iba = es->es_ifuba.ifu_r.ifrw_info; |
dc39362e | 197 | addr->en_iwc = -(sizeof (struct en_header) + ENMRU) >> 1; |
b454c3ea BJ |
198 | addr->en_istat = EN_IEN|EN_GO; |
199 | es->es_oactive = 1; | |
7f0e1e06 | 200 | es->es_if.if_flags |= IFF_RUNNING; |
f1b2fa5b BJ |
201 | enxint(unit); |
202 | splx(s); | |
11720282 BJ |
203 | } |
204 | ||
0658a645 | 205 | int enalldelay = 0; |
4c073c48 | 206 | int enlastdel = 50; |
0658a645 | 207 | int enlastmask = (~0) << 5; |
8a13b737 | 208 | |
f1b2fa5b BJ |
209 | /* |
210 | * Start or restart output on interface. | |
211 | * If interface is already active, then this is a retransmit | |
212 | * after a collision, and just restuff registers and delay. | |
213 | * If interface is not already active, get another datagram | |
214 | * to send off of the interface queue, and map it to the interface | |
215 | * before starting the output. | |
216 | */ | |
ae348eea | 217 | enstart(dev) |
11720282 BJ |
218 | dev_t dev; |
219 | { | |
b454c3ea BJ |
220 | int unit = ENUNIT(dev); |
221 | struct uba_device *ui = eninfo[unit]; | |
222 | register struct en_softc *es = &en_softc[unit]; | |
8a13b737 | 223 | register struct endevice *addr; |
7fb445f3 | 224 | register struct en_header *en; |
8a13b737 BJ |
225 | struct mbuf *m; |
226 | int dest; | |
11720282 | 227 | |
8a13b737 BJ |
228 | if (es->es_oactive) |
229 | goto restart; | |
f1b2fa5b BJ |
230 | |
231 | /* | |
232 | * Not already active: dequeue another request | |
233 | * and map it to the UNIBUS. If no more requests, | |
234 | * just return. | |
235 | */ | |
236 | IF_DEQUEUE(&es->es_if.if_snd, m); | |
8a13b737 BJ |
237 | if (m == 0) { |
238 | es->es_oactive = 0; | |
11720282 BJ |
239 | return; |
240 | } | |
7fb445f3 MK |
241 | en = mtod(m, struct en_header *); |
242 | dest = en->en_dhost; | |
243 | en->en_shost = es->es_host; | |
8a13b737 | 244 | es->es_olen = if_wubaput(&es->es_ifuba, m); |
c1b082c5 SL |
245 | #ifdef ENF_SWABIPS |
246 | /* | |
247 | * The Xerox interface does word at a time DMA, so | |
248 | * someone must do byte swapping of user data if high | |
249 | * and low ender machines are to communicate. It doesn't | |
250 | * belong here, but certain people depend on it, so... | |
251 | * | |
252 | * Should swab everybody, but this is a kludge anyway. | |
253 | */ | |
254 | if (es->es_if.if_flags & ENF_SWABIPS) { | |
c1b082c5 SL |
255 | en = (struct en_header *)es->es_ifuba.ifu_w.ifrw_addr; |
256 | if (en->en_type == ENTYPE_IP) | |
257 | enswab((caddr_t)(en + 1), (caddr_t)(en + 1), | |
258 | es->es_olen - sizeof (struct en_header) + 1); | |
259 | } | |
260 | #endif | |
f1b2fa5b BJ |
261 | |
262 | /* | |
263 | * Ethernet cannot take back-to-back packets (no | |
0658a645 BJ |
264 | * buffering in interface. To help avoid overrunning |
265 | * receivers, enforce a small delay (about 1ms) in interface: | |
266 | * * between all packets when enalldelay | |
267 | * * whenever last packet was broadcast | |
268 | * * whenever this packet is to same host as last packet | |
f1b2fa5b | 269 | */ |
0658a645 | 270 | if (enalldelay || es->es_lastx == 0 || es->es_lastx == dest) { |
8a13b737 | 271 | es->es_delay = enlastdel; |
0658a645 BJ |
272 | es->es_mask = enlastmask; |
273 | } | |
274 | es->es_lastx = dest; | |
f1b2fa5b | 275 | |
8a13b737 | 276 | restart: |
f1b2fa5b BJ |
277 | /* |
278 | * Have request mapped to UNIBUS for transmission. | |
279 | * Purge any stale data from this BDP, and start the otput. | |
280 | */ | |
ee787340 SL |
281 | if (es->es_ifuba.ifu_flags & UBA_NEEDBDP) |
282 | UBAPURGE(es->es_ifuba.ifu_uba, es->es_ifuba.ifu_w.ifrw_bdp); | |
11720282 | 283 | addr = (struct endevice *)ui->ui_addr; |
405c9168 | 284 | addr->en_oba = (int)es->es_ifuba.ifu_w.ifrw_info; |
8a13b737 BJ |
285 | addr->en_odelay = es->es_delay; |
286 | addr->en_owc = -((es->es_olen + 1) >> 1); | |
941ee7ef | 287 | addr->en_ostat = EN_IEN|EN_GO; |
8a13b737 | 288 | es->es_oactive = 1; |
11720282 BJ |
289 | } |
290 | ||
f1b2fa5b BJ |
291 | /* |
292 | * Ethernet interface transmitter interrupt. | |
293 | * Start another output if more data to send. | |
294 | */ | |
11720282 BJ |
295 | enxint(unit) |
296 | int unit; | |
297 | { | |
b454c3ea BJ |
298 | register struct uba_device *ui = eninfo[unit]; |
299 | register struct en_softc *es = &en_softc[unit]; | |
519a1ecf | 300 | register struct endevice *addr = (struct endevice *)ui->ui_addr; |
11720282 | 301 | |
8a13b737 BJ |
302 | if (es->es_oactive == 0) |
303 | return; | |
519a1ecf | 304 | if (es->es_mask && (addr->en_ostat&EN_OERROR)) { |
89413846 | 305 | es->es_if.if_oerrors++; |
519a1ecf BJ |
306 | endocoll(unit); |
307 | return; | |
89413846 | 308 | } |
519a1ecf BJ |
309 | es->es_if.if_opackets++; |
310 | es->es_oactive = 0; | |
311 | es->es_delay = 0; | |
312 | es->es_mask = ~0; | |
7a66118b BJ |
313 | if (es->es_ifuba.ifu_xtofree) { |
314 | m_freem(es->es_ifuba.ifu_xtofree); | |
315 | es->es_ifuba.ifu_xtofree = 0; | |
316 | } | |
f1b2fa5b | 317 | if (es->es_if.if_snd.ifq_head == 0) { |
0658a645 | 318 | es->es_lastx = 256; /* putatively illegal */ |
11720282 BJ |
319 | return; |
320 | } | |
8a13b737 | 321 | enstart(unit); |
11720282 BJ |
322 | } |
323 | ||
f1b2fa5b BJ |
324 | /* |
325 | * Collision on ethernet interface. Do exponential | |
326 | * backoff, and retransmit. If have backed off all | |
ee787340 | 327 | * the way print warning diagnostic, and drop packet. |
f1b2fa5b | 328 | */ |
11720282 BJ |
329 | encollide(unit) |
330 | int unit; | |
331 | { | |
519a1ecf | 332 | struct en_softc *es = &en_softc[unit]; |
11720282 | 333 | |
f1b2fa5b | 334 | es->es_if.if_collisions++; |
8a13b737 | 335 | if (es->es_oactive == 0) |
11720282 | 336 | return; |
519a1ecf BJ |
337 | endocoll(unit); |
338 | } | |
339 | ||
340 | endocoll(unit) | |
341 | int unit; | |
342 | { | |
343 | register struct en_softc *es = &en_softc[unit]; | |
344 | ||
b454c3ea BJ |
345 | /* |
346 | * Es_mask is a 16 bit number with n low zero bits, with | |
347 | * n the number of backoffs. When es_mask is 0 we have | |
348 | * backed off 16 times, and give up. | |
349 | */ | |
8a13b737 | 350 | if (es->es_mask == 0) { |
a453e1b5 | 351 | printf("en%d: send error\n", unit); |
8a13b737 | 352 | enxint(unit); |
b454c3ea | 353 | return; |
11720282 | 354 | } |
b454c3ea BJ |
355 | /* |
356 | * Another backoff. Restart with delay based on n low bits | |
357 | * of the interval timer. | |
358 | */ | |
359 | es->es_mask <<= 1; | |
360 | es->es_delay = mfpr(ICR) &~ es->es_mask; | |
361 | enstart(unit); | |
11720282 BJ |
362 | } |
363 | ||
3cb181be SL |
364 | #ifdef notdef |
365 | struct sockproto enproto = { AF_ETHERLINK }; | |
4f02060d KS |
366 | struct sockaddr_en endst = { sizeof(endst), AF_ETHERLINK }; |
367 | struct sockaddr_en ensrc = { sizeof(ensrc), AF_ETHERLINK }; | |
3cb181be | 368 | #endif |
f1b2fa5b BJ |
369 | /* |
370 | * Ethernet interface receiver interrupt. | |
371 | * If input error just drop packet. | |
372 | * Otherwise purge input buffered data path and examine | |
373 | * packet to determine type. If can't determine length | |
374 | * from type, then have to drop packet. Othewise decapsulate | |
375 | * packet based on type and pass to type specific higher-level | |
376 | * input routine. | |
377 | */ | |
11720282 BJ |
378 | enrint(unit) |
379 | int unit; | |
380 | { | |
b454c3ea BJ |
381 | register struct en_softc *es = &en_softc[unit]; |
382 | struct endevice *addr = (struct endevice *)eninfo[unit]->ui_addr; | |
383 | register struct en_header *en; | |
8a13b737 | 384 | struct mbuf *m; |
038ee561 | 385 | int len; short resid; |
b454c3ea | 386 | register struct ifqueue *inq; |
51c7d639 | 387 | int off, s; |
11720282 | 388 | |
b454c3ea | 389 | es->es_if.if_ipackets++; |
f1b2fa5b BJ |
390 | |
391 | /* | |
b454c3ea | 392 | * Purge BDP; drop if input error indicated. |
f1b2fa5b | 393 | */ |
ee787340 SL |
394 | if (es->es_ifuba.ifu_flags & UBA_NEEDBDP) |
395 | UBAPURGE(es->es_ifuba.ifu_uba, es->es_ifuba.ifu_r.ifrw_bdp); | |
941ee7ef | 396 | if (addr->en_istat&EN_IERROR) { |
f1b2fa5b | 397 | es->es_if.if_ierrors++; |
8a13b737 | 398 | goto setup; |
11720282 | 399 | } |
f1b2fa5b BJ |
400 | |
401 | /* | |
0658a645 | 402 | * Calculate input data length. |
f1b2fa5b BJ |
403 | * Get pointer to ethernet header (in input buffer). |
404 | * Deal with trailer protocol: if type is PUP trailer | |
405 | * get true type from first 16-bit word past data. | |
406 | * Remember that type was trailer by setting off. | |
407 | */ | |
0658a645 BJ |
408 | resid = addr->en_iwc; |
409 | if (resid) | |
410 | resid |= 0176000; | |
dc39362e | 411 | len = (((sizeof (struct en_header) + ENMRU) >> 1) + resid) << 1; |
0658a645 | 412 | len -= sizeof (struct en_header); |
dc39362e | 413 | if (len > ENMRU) |
0658a645 | 414 | goto setup; /* sanity */ |
f1b2fa5b | 415 | en = (struct en_header *)(es->es_ifuba.ifu_r.ifrw_addr); |
991f6240 | 416 | en->en_type = ntohs(en->en_type); |
8a13b737 | 417 | #define endataaddr(en, off, type) ((type)(((caddr_t)((en)+1)+(off)))) |
991f6240 SL |
418 | if (en->en_type >= ENTYPE_TRAIL && |
419 | en->en_type < ENTYPE_TRAIL+ENTYPE_NTRAILER) { | |
420 | off = (en->en_type - ENTYPE_TRAIL) * 512; | |
dc39362e | 421 | if (off > ENMTU) |
b454c3ea | 422 | goto setup; /* sanity */ |
991f6240 SL |
423 | en->en_type = ntohs(*endataaddr(en, off, u_short *)); |
424 | resid = ntohs(*(endataaddr(en, off+2, u_short *))); | |
0658a645 BJ |
425 | if (off + resid > len) |
426 | goto setup; /* sanity */ | |
427 | len = off + resid; | |
8a13b737 BJ |
428 | } else |
429 | off = 0; | |
8a13b737 BJ |
430 | if (len == 0) |
431 | goto setup; | |
c1b082c5 SL |
432 | #ifdef ENF_SWABIPS |
433 | if (es->es_if.if_flags & ENF_SWABIPS && en->en_type == ENTYPE_IP) | |
434 | enswab((caddr_t)(en + 1), (caddr_t)(en + 1), len); | |
435 | #endif | |
f1b2fa5b BJ |
436 | /* |
437 | * Pull packet off interface. Off is nonzero if packet | |
438 | * has trailing header; if_rubaget will then force this header | |
439 | * information to be at the front, but we still have to drop | |
0658a645 | 440 | * the type and length which are at the front of any trailer data. |
f1b2fa5b | 441 | */ |
67eb6277 | 442 | m = if_rubaget(&es->es_ifuba, len, off, &es->es_if); |
a453e1b5 BJ |
443 | if (m == 0) |
444 | goto setup; | |
31c2345c SL |
445 | switch (en->en_type) { |
446 | ||
447 | #ifdef INET | |
991f6240 | 448 | case ENTYPE_IP: |
9c8692e9 | 449 | schednetisr(NETISR_IP); |
31c2345c SL |
450 | inq = &ipintrq; |
451 | break; | |
452 | #endif | |
ee787340 | 453 | #ifdef PUP |
3cb181be SL |
454 | case ENTYPE_PUP: |
455 | rpup_input(m); | |
31c2345c | 456 | goto setup; |
ee787340 | 457 | #endif |
91712b0f KS |
458 | #ifdef NS |
459 | case ETHERTYPE_NS: | |
460 | if (es->es_nsactive) { | |
461 | schednetisr(NETISR_NS); | |
462 | inq = &nsintrq; | |
463 | } else { | |
464 | m_freem(m); | |
465 | goto setup; | |
466 | } | |
467 | break; | |
468 | #endif | |
469 | ||
c8f8184f | 470 | default: |
3cb181be SL |
471 | #ifdef notdef |
472 | enproto.sp_protocol = en->en_type; | |
473 | endst.sen_host = en->en_dhost; | |
474 | endst.sen_net = ensrc.sen_net = es->es_if.if_net; | |
475 | ensrc.sen_host = en->en_shost; | |
476 | raw_input(m, &enproto, | |
477 | (struct sockaddr *)&ensrc, (struct sockaddr *)&endst); | |
478 | #else | |
c8f8184f | 479 | m_freem(m); |
3cb181be | 480 | #endif |
c8f8184f | 481 | goto setup; |
ee787340 SL |
482 | } |
483 | ||
51c7d639 | 484 | s = splimp(); |
1e977657 BJ |
485 | if (IF_QFULL(inq)) { |
486 | IF_DROP(inq); | |
ee787340 | 487 | m_freem(m); |
1e977657 BJ |
488 | } else |
489 | IF_ENQUEUE(inq, m); | |
51c7d639 | 490 | splx(s); |
f1b2fa5b | 491 | |
ae348eea | 492 | setup: |
f1b2fa5b BJ |
493 | /* |
494 | * Reset for next packet. | |
495 | */ | |
496 | addr->en_iba = es->es_ifuba.ifu_r.ifrw_info; | |
dc39362e | 497 | addr->en_iwc = -(sizeof (struct en_header) + ENMRU) >> 1; |
941ee7ef | 498 | addr->en_istat = EN_IEN|EN_GO; |
ae348eea | 499 | } |
11720282 | 500 | |
8a13b737 BJ |
501 | /* |
502 | * Ethernet output routine. | |
503 | * Encapsulate a packet of type family for the local net. | |
f1b2fa5b BJ |
504 | * Use trailer local net encapsulation if enough data in first |
505 | * packet leaves a multiple of 512 bytes of data in remainder. | |
8a13b737 | 506 | */ |
95cfbc58 | 507 | oldenoutput(ifp, m0, dst) |
8a13b737 BJ |
508 | struct ifnet *ifp; |
509 | struct mbuf *m0; | |
ee787340 | 510 | struct sockaddr *dst; |
11720282 | 511 | { |
8a2f82db | 512 | int type, dest, s, error; |
f1b2fa5b | 513 | register struct mbuf *m = m0; |
8a13b737 | 514 | register struct en_header *en; |
ee787340 | 515 | register int off; |
8a13b737 | 516 | |
0f487295 MK |
517 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { |
518 | error = ENETDOWN; | |
519 | goto bad; | |
520 | } | |
ee787340 | 521 | switch (dst->sa_family) { |
11720282 | 522 | |
8a13b737 | 523 | #ifdef INET |
ee787340 | 524 | case AF_INET: |
7f0e1e06 MK |
525 | { |
526 | struct in_addr in; | |
527 | ||
528 | in = ((struct sockaddr_in *)dst)->sin_addr; | |
529 | if (in_broadcast(in)) | |
530 | dest = EN_BROADCAST; | |
531 | else | |
532 | dest = in_lnaof(in); | |
533 | } | |
534 | if (dest >= 0x100) { | |
8a2f82db | 535 | error = EPERM; /* ??? */ |
3734056d | 536 | goto bad; |
8a2f82db | 537 | } |
95cfbc58 | 538 | off = m->m_pkthdr.len - m->m_len; |
47695a10 SL |
539 | /* need per host negotiation */ |
540 | if ((ifp->if_flags & IFF_NOTRAILERS) == 0) | |
ee787340 | 541 | if (off > 0 && (off & 0x1ff) == 0 && |
95cfbc58 KS |
542 | (m->m_flags & M_EXT) == 0 && |
543 | m->m_data >= m->m_pktdat + 2 * sizeof (u_short)) { | |
991f6240 | 544 | type = ENTYPE_TRAIL + (off>>9); |
95cfbc58 | 545 | m->m_data -= 2 * sizeof (u_short); |
0658a645 | 546 | m->m_len += 2 * sizeof (u_short); |
991f6240 SL |
547 | *mtod(m, u_short *) = htons((u_short)ENTYPE_IP); |
548 | *(mtod(m, u_short *) + 1) = ntohs((u_short)m->m_len); | |
f1b2fa5b | 549 | goto gottrailertype; |
8a13b737 | 550 | } |
991f6240 | 551 | type = ENTYPE_IP; |
f1b2fa5b BJ |
552 | off = 0; |
553 | goto gottype; | |
8a13b737 | 554 | #endif |
91712b0f KS |
555 | #ifdef NS |
556 | case AF_NS: | |
557 | { | |
558 | u_char *up; | |
559 | ||
560 | type = ETHERTYPE_NS; | |
561 | up = ((struct sockaddr_ns *)dst)->sns_addr.x_host.c_host; | |
562 | if (*up & 1) | |
563 | dest = EN_BROADCAST; | |
564 | else | |
565 | dest = up[5]; | |
566 | ||
567 | off = 0; | |
568 | goto gottype; | |
569 | } | |
570 | #endif | |
31c2345c | 571 | #ifdef PUP |
ee787340 | 572 | case AF_PUP: |
1c1d4563 | 573 | dest = ((struct sockaddr_pup *)dst)->spup_host; |
991f6240 | 574 | type = ENTYPE_PUP; |
31c2345c SL |
575 | off = 0; |
576 | goto gottype; | |
31c2345c | 577 | #endif |
8a13b737 | 578 | |
3cb181be SL |
579 | #ifdef notdef |
580 | case AF_ETHERLINK: | |
581 | goto gotheader; | |
582 | #endif | |
583 | ||
8a13b737 | 584 | default: |
ee787340 SL |
585 | printf("en%d: can't handle af%d\n", ifp->if_unit, |
586 | dst->sa_family); | |
8a2f82db SL |
587 | error = EAFNOSUPPORT; |
588 | goto bad; | |
8a13b737 | 589 | } |
f1b2fa5b | 590 | |
b454c3ea | 591 | gottrailertype: |
f1b2fa5b BJ |
592 | /* |
593 | * Packet to be sent as trailer: move first packet | |
594 | * (control information) to end of chain. | |
595 | */ | |
f1b2fa5b BJ |
596 | while (m->m_next) |
597 | m = m->m_next; | |
598 | m->m_next = m0; | |
599 | m = m0->m_next; | |
600 | m0->m_next = 0; | |
b454c3ea | 601 | m0 = m; |
f1b2fa5b | 602 | |
b454c3ea | 603 | gottype: |
f1b2fa5b BJ |
604 | /* |
605 | * Add local net header. If no space in first mbuf, | |
606 | * allocate another. | |
607 | */ | |
95cfbc58 KS |
608 | M_PREPEND(m, sizeof (struct en_header), M_DONTWAIT); |
609 | if (m == NULL) | |
610 | return (ENOBUFS); | |
8a13b737 | 611 | en = mtod(m, struct en_header *); |
7fb445f3 | 612 | /* add en_shost later */ |
8a13b737 | 613 | en->en_dhost = dest; |
991f6240 | 614 | en->en_type = htons((u_short)type); |
f1b2fa5b | 615 | |
67eb6277 | 616 | #ifdef notdef |
3cb181be | 617 | gotheader: |
67eb6277 | 618 | #endif |
f1b2fa5b BJ |
619 | /* |
620 | * Queue message on interface, and start output if interface | |
621 | * not yet active. | |
622 | */ | |
8a13b737 | 623 | s = splimp(); |
1e977657 BJ |
624 | if (IF_QFULL(&ifp->if_snd)) { |
625 | IF_DROP(&ifp->if_snd); | |
8a2f82db SL |
626 | error = ENOBUFS; |
627 | goto qfull; | |
1e977657 | 628 | } |
8a13b737 | 629 | IF_ENQUEUE(&ifp->if_snd, m); |
8a13b737 BJ |
630 | if (en_softc[ifp->if_unit].es_oactive == 0) |
631 | enstart(ifp->if_unit); | |
89413846 | 632 | splx(s); |
4e818526 | 633 | return (0); |
8a2f82db SL |
634 | qfull: |
635 | m0 = m; | |
636 | splx(s); | |
637 | bad: | |
638 | m_freem(m0); | |
639 | return (error); | |
11720282 | 640 | } |
47695a10 SL |
641 | |
642 | /* | |
643 | * Process an ioctl request. | |
644 | */ | |
645 | enioctl(ifp, cmd, data) | |
646 | register struct ifnet *ifp; | |
647 | int cmd; | |
648 | caddr_t data; | |
649 | { | |
7f0e1e06 MK |
650 | register struct en_softc *es = ((struct en_softc *)ifp); |
651 | struct ifaddr *ifa = (struct ifaddr *) data; | |
47695a10 | 652 | int s = splimp(), error = 0; |
7f0e1e06 | 653 | struct endevice *enaddr; |
47695a10 SL |
654 | |
655 | switch (cmd) { | |
656 | ||
657 | case SIOCSIFADDR: | |
7f0e1e06 MK |
658 | enaddr = (struct endevice *)eninfo[ifp->if_unit]->ui_addr; |
659 | es->es_host = (~enaddr->en_addr) & 0xff; | |
660 | /* | |
661 | * Attempt to check agreement of protocol address | |
662 | * and board address. | |
663 | */ | |
4f02060d | 664 | switch (ifa->ifa_addr->sa_family) { |
7f0e1e06 MK |
665 | case AF_INET: |
666 | if (in_lnaof(IA_SIN(ifa)->sin_addr) != es->es_host) | |
667 | return (EADDRNOTAVAIL); | |
668 | break; | |
91712b0f KS |
669 | #ifdef NS |
670 | case AF_NS: | |
671 | if (IA_SNS(ifa)->sns_addr.x_host.c_host[5] | |
672 | != es->es_host) | |
673 | return (EADDRNOTAVAIL); | |
674 | es->es_nsactive = 1; | |
675 | break; | |
676 | #endif | |
7f0e1e06 MK |
677 | } |
678 | ifp->if_flags |= IFF_UP; | |
679 | if ((ifp->if_flags & IFF_RUNNING) == 0) | |
47695a10 SL |
680 | eninit(ifp->if_unit); |
681 | break; | |
682 | ||
683 | default: | |
684 | error = EINVAL; | |
67eb6277 | 685 | break; |
47695a10 SL |
686 | } |
687 | splx(s); | |
688 | return (error); | |
689 | } | |
690 | ||
c1b082c5 SL |
691 | #ifdef ENF_SWABIPS |
692 | /* | |
693 | * Swab bytes | |
694 | * Jeffrey Mogul, Stanford | |
695 | */ | |
696 | enswab(from, to, n) | |
7f0e1e06 | 697 | register unsigned char *from, *to; |
c1b082c5 SL |
698 | register int n; |
699 | { | |
700 | register unsigned long temp; | |
7f0e1e06 MK |
701 | |
702 | if ((n <= 0) || (n > 0xFFFF)) { | |
703 | printf("enswab: bad len %d\n", n); | |
704 | return; | |
705 | } | |
c1b082c5 SL |
706 | |
707 | n >>= 1; n++; | |
7f0e1e06 | 708 | #define STEP {temp = *from++;*to++ = *from++;*to++ = temp;} |
c1b082c5 SL |
709 | /* round to multiple of 8 */ |
710 | while ((--n) & 07) | |
711 | STEP; | |
712 | n >>= 3; | |
713 | while (--n >= 0) { | |
714 | STEP; STEP; STEP; STEP; | |
715 | STEP; STEP; STEP; STEP; | |
716 | } | |
717 | } | |
718 | #endif | |
9a0b0c74 | 719 | #endif |