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138635cc GS |
1 | /* |
2 | * Copyright Gavin Shan, IBM Corporation 2016. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | */ | |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/netdevice.h> | |
14 | #include <linux/skbuff.h> | |
15 | ||
16 | #include <net/ncsi.h> | |
17 | #include <net/net_namespace.h> | |
18 | #include <net/sock.h> | |
19 | ||
20 | #include "internal.h" | |
21 | #include "ncsi-pkt.h" | |
22 | ||
23 | static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, | |
24 | unsigned short payload) | |
25 | { | |
26 | struct ncsi_rsp_pkt_hdr *h; | |
27 | u32 checksum; | |
28 | __be32 *pchecksum; | |
29 | ||
30 | /* Check NCSI packet header. We don't need validate | |
31 | * the packet type, which should have been checked | |
32 | * before calling this function. | |
33 | */ | |
34 | h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(nr->rsp); | |
35 | if (h->common.revision != NCSI_PKT_REVISION) | |
36 | return -EINVAL; | |
37 | if (ntohs(h->common.length) != payload) | |
38 | return -EINVAL; | |
39 | ||
40 | /* Check on code and reason */ | |
41 | if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED || | |
42 | ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) | |
43 | return -EINVAL; | |
44 | ||
45 | /* Validate checksum, which might be zeroes if the | |
46 | * sender doesn't support checksum according to NCSI | |
47 | * specification. | |
48 | */ | |
49 | pchecksum = (__be32 *)((void *)(h + 1) + payload - 4); | |
50 | if (ntohl(*pchecksum) == 0) | |
51 | return 0; | |
52 | ||
53 | checksum = ncsi_calculate_checksum((unsigned char *)h, | |
54 | sizeof(*h) + payload - 4); | |
55 | if (*pchecksum != htonl(checksum)) | |
56 | return -EINVAL; | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | static int ncsi_rsp_handler_cis(struct ncsi_request *nr) | |
62 | { | |
63 | struct ncsi_rsp_pkt *rsp; | |
64 | struct ncsi_dev_priv *ndp = nr->ndp; | |
65 | struct ncsi_package *np; | |
66 | struct ncsi_channel *nc; | |
67 | unsigned char id; | |
68 | ||
69 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
70 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, &nc); | |
71 | if (!nc) { | |
e6f44ed6 GS |
72 | if (ndp->flags & NCSI_DEV_PROBED) |
73 | return -ENXIO; | |
74 | ||
138635cc GS |
75 | id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel); |
76 | nc = ncsi_add_channel(np, id); | |
77 | } | |
78 | ||
79 | return nc ? 0 : -ENODEV; | |
80 | } | |
81 | ||
82 | static int ncsi_rsp_handler_sp(struct ncsi_request *nr) | |
83 | { | |
84 | struct ncsi_rsp_pkt *rsp; | |
85 | struct ncsi_dev_priv *ndp = nr->ndp; | |
86 | struct ncsi_package *np; | |
87 | unsigned char id; | |
88 | ||
89 | /* Add the package if it's not existing. Otherwise, | |
90 | * to change the state of its child channels. | |
91 | */ | |
92 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
93 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
94 | &np, NULL); | |
95 | if (!np) { | |
e6f44ed6 GS |
96 | if (ndp->flags & NCSI_DEV_PROBED) |
97 | return -ENXIO; | |
98 | ||
138635cc GS |
99 | id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel); |
100 | np = ncsi_add_package(ndp, id); | |
101 | if (!np) | |
102 | return -ENODEV; | |
103 | } | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | static int ncsi_rsp_handler_dp(struct ncsi_request *nr) | |
109 | { | |
110 | struct ncsi_rsp_pkt *rsp; | |
111 | struct ncsi_dev_priv *ndp = nr->ndp; | |
112 | struct ncsi_package *np; | |
113 | struct ncsi_channel *nc; | |
114 | unsigned long flags; | |
115 | ||
116 | /* Find the package */ | |
117 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
118 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
119 | &np, NULL); | |
120 | if (!np) | |
121 | return -ENODEV; | |
122 | ||
123 | /* Change state of all channels attached to the package */ | |
124 | NCSI_FOR_EACH_CHANNEL(np, nc) { | |
125 | spin_lock_irqsave(&nc->lock, flags); | |
126 | nc->state = NCSI_CHANNEL_INACTIVE; | |
127 | spin_unlock_irqrestore(&nc->lock, flags); | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | static int ncsi_rsp_handler_ec(struct ncsi_request *nr) | |
134 | { | |
135 | struct ncsi_rsp_pkt *rsp; | |
136 | struct ncsi_dev_priv *ndp = nr->ndp; | |
137 | struct ncsi_channel *nc; | |
138 | struct ncsi_channel_mode *ncm; | |
139 | ||
140 | /* Find the package and channel */ | |
141 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
142 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
143 | NULL, &nc); | |
144 | if (!nc) | |
145 | return -ENODEV; | |
146 | ||
147 | ncm = &nc->modes[NCSI_MODE_ENABLE]; | |
148 | if (ncm->enable) | |
149 | return -EBUSY; | |
150 | ||
151 | ncm->enable = 1; | |
152 | return 0; | |
153 | } | |
154 | ||
155 | static int ncsi_rsp_handler_dc(struct ncsi_request *nr) | |
156 | { | |
157 | struct ncsi_rsp_pkt *rsp; | |
158 | struct ncsi_dev_priv *ndp = nr->ndp; | |
159 | struct ncsi_channel *nc; | |
160 | struct ncsi_channel_mode *ncm; | |
161 | int ret; | |
162 | ||
163 | ret = ncsi_validate_rsp_pkt(nr, 4); | |
164 | if (ret) | |
165 | return ret; | |
166 | ||
167 | /* Find the package and channel */ | |
168 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
169 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
170 | NULL, &nc); | |
171 | if (!nc) | |
172 | return -ENODEV; | |
173 | ||
174 | ncm = &nc->modes[NCSI_MODE_ENABLE]; | |
175 | if (!ncm->enable) | |
176 | return -EBUSY; | |
177 | ||
178 | ncm->enable = 0; | |
179 | return 0; | |
180 | } | |
181 | ||
182 | static int ncsi_rsp_handler_rc(struct ncsi_request *nr) | |
183 | { | |
184 | struct ncsi_rsp_pkt *rsp; | |
185 | struct ncsi_dev_priv *ndp = nr->ndp; | |
186 | struct ncsi_channel *nc; | |
187 | unsigned long flags; | |
188 | ||
189 | /* Find the package and channel */ | |
190 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
191 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
192 | NULL, &nc); | |
193 | if (!nc) | |
194 | return -ENODEV; | |
195 | ||
196 | /* Update state for the specified channel */ | |
197 | spin_lock_irqsave(&nc->lock, flags); | |
198 | nc->state = NCSI_CHANNEL_INACTIVE; | |
199 | spin_unlock_irqrestore(&nc->lock, flags); | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static int ncsi_rsp_handler_ecnt(struct ncsi_request *nr) | |
205 | { | |
206 | struct ncsi_rsp_pkt *rsp; | |
207 | struct ncsi_dev_priv *ndp = nr->ndp; | |
208 | struct ncsi_channel *nc; | |
209 | struct ncsi_channel_mode *ncm; | |
210 | ||
211 | /* Find the package and channel */ | |
212 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
213 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
214 | NULL, &nc); | |
215 | if (!nc) | |
216 | return -ENODEV; | |
217 | ||
218 | ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; | |
219 | if (ncm->enable) | |
220 | return -EBUSY; | |
221 | ||
222 | ncm->enable = 1; | |
223 | return 0; | |
224 | } | |
225 | ||
226 | static int ncsi_rsp_handler_dcnt(struct ncsi_request *nr) | |
227 | { | |
228 | struct ncsi_rsp_pkt *rsp; | |
229 | struct ncsi_dev_priv *ndp = nr->ndp; | |
230 | struct ncsi_channel *nc; | |
231 | struct ncsi_channel_mode *ncm; | |
232 | ||
233 | /* Find the package and channel */ | |
234 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
235 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
236 | NULL, &nc); | |
237 | if (!nc) | |
238 | return -ENODEV; | |
239 | ||
240 | ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; | |
241 | if (!ncm->enable) | |
242 | return -EBUSY; | |
243 | ||
244 | ncm->enable = 1; | |
245 | return 0; | |
246 | } | |
247 | ||
248 | static int ncsi_rsp_handler_ae(struct ncsi_request *nr) | |
249 | { | |
250 | struct ncsi_cmd_ae_pkt *cmd; | |
251 | struct ncsi_rsp_pkt *rsp; | |
252 | struct ncsi_dev_priv *ndp = nr->ndp; | |
253 | struct ncsi_channel *nc; | |
254 | struct ncsi_channel_mode *ncm; | |
255 | ||
256 | /* Find the package and channel */ | |
257 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
258 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
259 | NULL, &nc); | |
260 | if (!nc) | |
261 | return -ENODEV; | |
262 | ||
263 | /* Check if the AEN has been enabled */ | |
264 | ncm = &nc->modes[NCSI_MODE_AEN]; | |
265 | if (ncm->enable) | |
266 | return -EBUSY; | |
267 | ||
268 | /* Update to AEN configuration */ | |
269 | cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(nr->cmd); | |
270 | ncm->enable = 1; | |
271 | ncm->data[0] = cmd->mc_id; | |
272 | ncm->data[1] = ntohl(cmd->mode); | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | static int ncsi_rsp_handler_sl(struct ncsi_request *nr) | |
278 | { | |
279 | struct ncsi_cmd_sl_pkt *cmd; | |
280 | struct ncsi_rsp_pkt *rsp; | |
281 | struct ncsi_dev_priv *ndp = nr->ndp; | |
282 | struct ncsi_channel *nc; | |
283 | struct ncsi_channel_mode *ncm; | |
284 | ||
285 | /* Find the package and channel */ | |
286 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
287 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
288 | NULL, &nc); | |
289 | if (!nc) | |
290 | return -ENODEV; | |
291 | ||
292 | cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(nr->cmd); | |
293 | ncm = &nc->modes[NCSI_MODE_LINK]; | |
294 | ncm->data[0] = ntohl(cmd->mode); | |
295 | ncm->data[1] = ntohl(cmd->oem_mode); | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | static int ncsi_rsp_handler_gls(struct ncsi_request *nr) | |
301 | { | |
302 | struct ncsi_rsp_gls_pkt *rsp; | |
303 | struct ncsi_dev_priv *ndp = nr->ndp; | |
304 | struct ncsi_channel *nc; | |
305 | struct ncsi_channel_mode *ncm; | |
e6f44ed6 | 306 | unsigned long flags; |
138635cc GS |
307 | |
308 | /* Find the package and channel */ | |
309 | rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(nr->rsp); | |
310 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
311 | NULL, &nc); | |
312 | if (!nc) | |
313 | return -ENODEV; | |
314 | ||
315 | ncm = &nc->modes[NCSI_MODE_LINK]; | |
316 | ncm->data[2] = ntohl(rsp->status); | |
317 | ncm->data[3] = ntohl(rsp->other); | |
318 | ncm->data[4] = ntohl(rsp->oem_status); | |
319 | ||
e6f44ed6 GS |
320 | if (nr->driven) |
321 | return 0; | |
322 | ||
323 | /* Reset the channel monitor if it has been enabled */ | |
324 | spin_lock_irqsave(&nc->lock, flags); | |
325 | nc->timeout = 0; | |
326 | spin_unlock_irqrestore(&nc->lock, flags); | |
327 | ||
138635cc GS |
328 | return 0; |
329 | } | |
330 | ||
331 | static int ncsi_rsp_handler_svf(struct ncsi_request *nr) | |
332 | { | |
333 | struct ncsi_cmd_svf_pkt *cmd; | |
334 | struct ncsi_rsp_pkt *rsp; | |
335 | struct ncsi_dev_priv *ndp = nr->ndp; | |
336 | struct ncsi_channel *nc; | |
337 | struct ncsi_channel_filter *ncf; | |
338 | unsigned short vlan; | |
339 | int ret; | |
340 | ||
341 | /* Find the package and channel */ | |
342 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
343 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
344 | NULL, &nc); | |
345 | if (!nc) | |
346 | return -ENODEV; | |
347 | ||
348 | cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(nr->cmd); | |
349 | ncf = nc->filters[NCSI_FILTER_VLAN]; | |
350 | if (!ncf) | |
351 | return -ENOENT; | |
352 | if (cmd->index >= ncf->total) | |
353 | return -ERANGE; | |
354 | ||
355 | /* Add or remove the VLAN filter */ | |
356 | if (!(cmd->enable & 0x1)) { | |
357 | ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index); | |
358 | } else { | |
359 | vlan = ntohs(cmd->vlan); | |
360 | ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); | |
361 | } | |
362 | ||
363 | return ret; | |
364 | } | |
365 | ||
366 | static int ncsi_rsp_handler_ev(struct ncsi_request *nr) | |
367 | { | |
368 | struct ncsi_cmd_ev_pkt *cmd; | |
369 | struct ncsi_rsp_pkt *rsp; | |
370 | struct ncsi_dev_priv *ndp = nr->ndp; | |
371 | struct ncsi_channel *nc; | |
372 | struct ncsi_channel_mode *ncm; | |
373 | ||
374 | /* Find the package and channel */ | |
375 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
376 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
377 | NULL, &nc); | |
378 | if (!nc) | |
379 | return -ENODEV; | |
380 | ||
381 | /* Check if VLAN mode has been enabled */ | |
382 | ncm = &nc->modes[NCSI_MODE_VLAN]; | |
383 | if (ncm->enable) | |
384 | return -EBUSY; | |
385 | ||
386 | /* Update to VLAN mode */ | |
387 | cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd); | |
388 | ncm->enable = 1; | |
389 | ncm->data[0] = ntohl(cmd->mode); | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | static int ncsi_rsp_handler_dv(struct ncsi_request *nr) | |
395 | { | |
396 | struct ncsi_rsp_pkt *rsp; | |
397 | struct ncsi_dev_priv *ndp = nr->ndp; | |
398 | struct ncsi_channel *nc; | |
399 | struct ncsi_channel_mode *ncm; | |
400 | ||
401 | /* Find the package and channel */ | |
402 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
403 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
404 | NULL, &nc); | |
405 | if (!nc) | |
406 | return -ENODEV; | |
407 | ||
408 | /* Check if VLAN mode has been enabled */ | |
409 | ncm = &nc->modes[NCSI_MODE_VLAN]; | |
410 | if (!ncm->enable) | |
411 | return -EBUSY; | |
412 | ||
413 | /* Update to VLAN mode */ | |
414 | ncm->enable = 0; | |
415 | return 0; | |
416 | } | |
417 | ||
418 | static int ncsi_rsp_handler_sma(struct ncsi_request *nr) | |
419 | { | |
420 | struct ncsi_cmd_sma_pkt *cmd; | |
421 | struct ncsi_rsp_pkt *rsp; | |
422 | struct ncsi_dev_priv *ndp = nr->ndp; | |
423 | struct ncsi_channel *nc; | |
424 | struct ncsi_channel_filter *ncf; | |
425 | void *bitmap; | |
426 | ||
427 | /* Find the package and channel */ | |
428 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
429 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
430 | NULL, &nc); | |
431 | if (!nc) | |
432 | return -ENODEV; | |
433 | ||
434 | /* According to NCSI spec 1.01, the mixed filter table | |
435 | * isn't supported yet. | |
436 | */ | |
437 | cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd); | |
438 | switch (cmd->at_e >> 5) { | |
439 | case 0x0: /* UC address */ | |
440 | ncf = nc->filters[NCSI_FILTER_UC]; | |
441 | break; | |
442 | case 0x1: /* MC address */ | |
443 | ncf = nc->filters[NCSI_FILTER_MC]; | |
444 | break; | |
445 | default: | |
446 | return -EINVAL; | |
447 | } | |
448 | ||
449 | /* Sanity check on the filter */ | |
450 | if (!ncf) | |
451 | return -ENOENT; | |
452 | else if (cmd->index >= ncf->total) | |
453 | return -ERANGE; | |
454 | ||
455 | bitmap = &ncf->bitmap; | |
456 | if (cmd->at_e & 0x1) { | |
457 | if (test_and_set_bit(cmd->index, bitmap)) | |
458 | return -EBUSY; | |
459 | memcpy(ncf->data + 6 * cmd->index, cmd->mac, 6); | |
460 | } else { | |
461 | if (!test_and_clear_bit(cmd->index, bitmap)) | |
462 | return -EBUSY; | |
463 | ||
464 | memset(ncf->data + 6 * cmd->index, 0, 6); | |
465 | } | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | static int ncsi_rsp_handler_ebf(struct ncsi_request *nr) | |
471 | { | |
472 | struct ncsi_cmd_ebf_pkt *cmd; | |
473 | struct ncsi_rsp_pkt *rsp; | |
474 | struct ncsi_dev_priv *ndp = nr->ndp; | |
475 | struct ncsi_channel *nc; | |
476 | struct ncsi_channel_mode *ncm; | |
477 | ||
478 | /* Find the package and channel */ | |
479 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
480 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); | |
481 | if (!nc) | |
482 | return -ENODEV; | |
483 | ||
484 | /* Check if broadcast filter has been enabled */ | |
485 | ncm = &nc->modes[NCSI_MODE_BC]; | |
486 | if (ncm->enable) | |
487 | return -EBUSY; | |
488 | ||
489 | /* Update to broadcast filter mode */ | |
490 | cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd); | |
491 | ncm->enable = 1; | |
492 | ncm->data[0] = ntohl(cmd->mode); | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | static int ncsi_rsp_handler_dbf(struct ncsi_request *nr) | |
498 | { | |
499 | struct ncsi_rsp_pkt *rsp; | |
500 | struct ncsi_dev_priv *ndp = nr->ndp; | |
501 | struct ncsi_channel *nc; | |
502 | struct ncsi_channel_mode *ncm; | |
503 | ||
504 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
505 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
506 | NULL, &nc); | |
507 | if (!nc) | |
508 | return -ENODEV; | |
509 | ||
510 | /* Check if broadcast filter isn't enabled */ | |
511 | ncm = &nc->modes[NCSI_MODE_BC]; | |
512 | if (!ncm->enable) | |
513 | return -EBUSY; | |
514 | ||
515 | /* Update to broadcast filter mode */ | |
516 | ncm->enable = 0; | |
517 | ncm->data[0] = 0; | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
522 | static int ncsi_rsp_handler_egmf(struct ncsi_request *nr) | |
523 | { | |
524 | struct ncsi_cmd_egmf_pkt *cmd; | |
525 | struct ncsi_rsp_pkt *rsp; | |
526 | struct ncsi_dev_priv *ndp = nr->ndp; | |
527 | struct ncsi_channel *nc; | |
528 | struct ncsi_channel_mode *ncm; | |
529 | ||
530 | /* Find the channel */ | |
531 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
532 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
533 | NULL, &nc); | |
534 | if (!nc) | |
535 | return -ENODEV; | |
536 | ||
537 | /* Check if multicast filter has been enabled */ | |
538 | ncm = &nc->modes[NCSI_MODE_MC]; | |
539 | if (ncm->enable) | |
540 | return -EBUSY; | |
541 | ||
542 | /* Update to multicast filter mode */ | |
543 | cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd); | |
544 | ncm->enable = 1; | |
545 | ncm->data[0] = ntohl(cmd->mode); | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr) | |
551 | { | |
552 | struct ncsi_rsp_pkt *rsp; | |
553 | struct ncsi_dev_priv *ndp = nr->ndp; | |
554 | struct ncsi_channel *nc; | |
555 | struct ncsi_channel_mode *ncm; | |
556 | ||
557 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
558 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
559 | NULL, &nc); | |
560 | if (!nc) | |
561 | return -ENODEV; | |
562 | ||
563 | /* Check if multicast filter has been enabled */ | |
564 | ncm = &nc->modes[NCSI_MODE_MC]; | |
565 | if (!ncm->enable) | |
566 | return -EBUSY; | |
567 | ||
568 | /* Update to multicast filter mode */ | |
569 | ncm->enable = 0; | |
570 | ncm->data[0] = 0; | |
571 | ||
572 | return 0; | |
573 | } | |
574 | ||
575 | static int ncsi_rsp_handler_snfc(struct ncsi_request *nr) | |
576 | { | |
577 | struct ncsi_cmd_snfc_pkt *cmd; | |
578 | struct ncsi_rsp_pkt *rsp; | |
579 | struct ncsi_dev_priv *ndp = nr->ndp; | |
580 | struct ncsi_channel *nc; | |
581 | struct ncsi_channel_mode *ncm; | |
582 | ||
583 | /* Find the channel */ | |
584 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); | |
585 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
586 | NULL, &nc); | |
587 | if (!nc) | |
588 | return -ENODEV; | |
589 | ||
590 | /* Check if flow control has been enabled */ | |
591 | ncm = &nc->modes[NCSI_MODE_FC]; | |
592 | if (ncm->enable) | |
593 | return -EBUSY; | |
594 | ||
595 | /* Update to flow control mode */ | |
596 | cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd); | |
597 | ncm->enable = 1; | |
598 | ncm->data[0] = cmd->mode; | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
603 | static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) | |
604 | { | |
605 | struct ncsi_rsp_gvi_pkt *rsp; | |
606 | struct ncsi_dev_priv *ndp = nr->ndp; | |
607 | struct ncsi_channel *nc; | |
608 | struct ncsi_channel_version *ncv; | |
609 | int i; | |
610 | ||
611 | /* Find the channel */ | |
612 | rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp); | |
613 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
614 | NULL, &nc); | |
615 | if (!nc) | |
616 | return -ENODEV; | |
617 | ||
618 | /* Update to channel's version info */ | |
619 | ncv = &nc->version; | |
620 | ncv->version = ntohl(rsp->ncsi_version); | |
621 | ncv->alpha2 = rsp->alpha2; | |
622 | memcpy(ncv->fw_name, rsp->fw_name, 12); | |
623 | ncv->fw_version = ntohl(rsp->fw_version); | |
624 | for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) | |
625 | ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]); | |
626 | ncv->mf_id = ntohl(rsp->mf_id); | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | static int ncsi_rsp_handler_gc(struct ncsi_request *nr) | |
632 | { | |
633 | struct ncsi_rsp_gc_pkt *rsp; | |
634 | struct ncsi_dev_priv *ndp = nr->ndp; | |
635 | struct ncsi_channel *nc; | |
636 | struct ncsi_channel_filter *ncf; | |
637 | size_t size, entry_size; | |
638 | int cnt, i; | |
639 | ||
640 | /* Find the channel */ | |
641 | rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp); | |
642 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
643 | NULL, &nc); | |
644 | if (!nc) | |
645 | return -ENODEV; | |
646 | ||
647 | /* Update channel's capabilities */ | |
648 | nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) & | |
649 | NCSI_CAP_GENERIC_MASK; | |
650 | nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) & | |
651 | NCSI_CAP_BC_MASK; | |
652 | nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) & | |
653 | NCSI_CAP_MC_MASK; | |
654 | nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap); | |
655 | nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) & | |
656 | NCSI_CAP_AEN_MASK; | |
657 | nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode & | |
658 | NCSI_CAP_VLAN_MASK; | |
659 | ||
660 | /* Build filters */ | |
661 | for (i = 0; i < NCSI_FILTER_MAX; i++) { | |
662 | switch (i) { | |
663 | case NCSI_FILTER_VLAN: | |
664 | cnt = rsp->vlan_cnt; | |
665 | entry_size = 2; | |
666 | break; | |
667 | case NCSI_FILTER_MIXED: | |
668 | cnt = rsp->mixed_cnt; | |
669 | entry_size = 6; | |
670 | break; | |
671 | case NCSI_FILTER_MC: | |
672 | cnt = rsp->mc_cnt; | |
673 | entry_size = 6; | |
674 | break; | |
675 | case NCSI_FILTER_UC: | |
676 | cnt = rsp->uc_cnt; | |
677 | entry_size = 6; | |
678 | break; | |
679 | default: | |
680 | continue; | |
681 | } | |
682 | ||
683 | if (!cnt || nc->filters[i]) | |
684 | continue; | |
685 | ||
686 | size = sizeof(*ncf) + cnt * entry_size; | |
687 | ncf = kzalloc(size, GFP_ATOMIC); | |
688 | if (!ncf) { | |
689 | pr_warn("%s: Cannot alloc filter table (%d)\n", | |
690 | __func__, i); | |
691 | return -ENOMEM; | |
692 | } | |
693 | ||
694 | ncf->index = i; | |
695 | ncf->total = cnt; | |
696 | ncf->bitmap = 0x0ul; | |
697 | nc->filters[i] = ncf; | |
698 | } | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int ncsi_rsp_handler_gp(struct ncsi_request *nr) | |
704 | { | |
705 | struct ncsi_rsp_gp_pkt *rsp; | |
706 | struct ncsi_dev_priv *ndp = nr->ndp; | |
707 | struct ncsi_channel *nc; | |
708 | unsigned short enable, vlan; | |
709 | unsigned char *pdata; | |
710 | int table, i; | |
711 | ||
712 | /* Find the channel */ | |
713 | rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp); | |
714 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
715 | NULL, &nc); | |
716 | if (!nc) | |
717 | return -ENODEV; | |
718 | ||
719 | /* Modes with explicit enabled indications */ | |
720 | if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */ | |
721 | nc->modes[NCSI_MODE_BC].enable = 1; | |
722 | nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode); | |
723 | } | |
724 | if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */ | |
725 | nc->modes[NCSI_MODE_ENABLE].enable = 1; | |
726 | if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */ | |
727 | nc->modes[NCSI_MODE_TX_ENABLE].enable = 1; | |
728 | if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */ | |
729 | nc->modes[NCSI_MODE_MC].enable = 1; | |
730 | ||
731 | /* Modes without explicit enabled indications */ | |
732 | nc->modes[NCSI_MODE_LINK].enable = 1; | |
733 | nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode); | |
734 | nc->modes[NCSI_MODE_VLAN].enable = 1; | |
735 | nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode; | |
736 | nc->modes[NCSI_MODE_FC].enable = 1; | |
737 | nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode; | |
738 | nc->modes[NCSI_MODE_AEN].enable = 1; | |
739 | nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode); | |
740 | ||
741 | /* MAC addresses filter table */ | |
742 | pdata = (unsigned char *)rsp + 48; | |
743 | enable = rsp->mac_enable; | |
744 | for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) { | |
745 | if (i >= (nc->filters[NCSI_FILTER_UC]->total + | |
746 | nc->filters[NCSI_FILTER_MC]->total)) | |
747 | table = NCSI_FILTER_MIXED; | |
748 | else if (i >= nc->filters[NCSI_FILTER_UC]->total) | |
749 | table = NCSI_FILTER_MC; | |
750 | else | |
751 | table = NCSI_FILTER_UC; | |
752 | ||
753 | if (!(enable & (0x1 << i))) | |
754 | continue; | |
755 | ||
756 | if (ncsi_find_filter(nc, table, pdata) >= 0) | |
757 | continue; | |
758 | ||
759 | ncsi_add_filter(nc, table, pdata); | |
760 | } | |
761 | ||
762 | /* VLAN filter table */ | |
763 | enable = ntohs(rsp->vlan_enable); | |
764 | for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) { | |
765 | if (!(enable & (0x1 << i))) | |
766 | continue; | |
767 | ||
768 | vlan = ntohs(*(__be16 *)pdata); | |
769 | if (ncsi_find_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0) | |
770 | continue; | |
771 | ||
772 | ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); | |
773 | } | |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
778 | static int ncsi_rsp_handler_gcps(struct ncsi_request *nr) | |
779 | { | |
780 | struct ncsi_rsp_gcps_pkt *rsp; | |
781 | struct ncsi_dev_priv *ndp = nr->ndp; | |
782 | struct ncsi_channel *nc; | |
783 | struct ncsi_channel_stats *ncs; | |
784 | ||
785 | /* Find the channel */ | |
786 | rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp); | |
787 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
788 | NULL, &nc); | |
789 | if (!nc) | |
790 | return -ENODEV; | |
791 | ||
792 | /* Update HNC's statistics */ | |
793 | ncs = &nc->stats; | |
794 | ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi); | |
795 | ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo); | |
796 | ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes); | |
797 | ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes); | |
798 | ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts); | |
799 | ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts); | |
800 | ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts); | |
801 | ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts); | |
802 | ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts); | |
803 | ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts); | |
804 | ncs->hnc_fcs_err = ntohl(rsp->fcs_err); | |
805 | ncs->hnc_align_err = ntohl(rsp->align_err); | |
806 | ncs->hnc_false_carrier = ntohl(rsp->false_carrier); | |
807 | ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts); | |
808 | ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts); | |
809 | ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon); | |
810 | ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff); | |
811 | ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon); | |
812 | ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff); | |
813 | ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision); | |
814 | ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision); | |
815 | ncs->hnc_l_collision = ntohl(rsp->l_collision); | |
816 | ncs->hnc_e_collision = ntohl(rsp->e_collision); | |
817 | ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames); | |
818 | ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames); | |
819 | ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames); | |
820 | ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames); | |
821 | ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames); | |
822 | ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames); | |
823 | ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames); | |
824 | ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames); | |
825 | ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames); | |
826 | ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames); | |
827 | ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames); | |
828 | ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames); | |
829 | ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames); | |
830 | ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames); | |
831 | ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames); | |
832 | ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes); | |
833 | ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts); | |
834 | ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts); | |
835 | ||
836 | return 0; | |
837 | } | |
838 | ||
839 | static int ncsi_rsp_handler_gns(struct ncsi_request *nr) | |
840 | { | |
841 | struct ncsi_rsp_gns_pkt *rsp; | |
842 | struct ncsi_dev_priv *ndp = nr->ndp; | |
843 | struct ncsi_channel *nc; | |
844 | struct ncsi_channel_stats *ncs; | |
845 | ||
846 | /* Find the channel */ | |
847 | rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp); | |
848 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
849 | NULL, &nc); | |
850 | if (!nc) | |
851 | return -ENODEV; | |
852 | ||
853 | /* Update HNC's statistics */ | |
854 | ncs = &nc->stats; | |
855 | ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds); | |
856 | ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds); | |
857 | ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs); | |
858 | ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs); | |
859 | ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts); | |
860 | ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts); | |
861 | ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts); | |
862 | ||
863 | return 0; | |
864 | } | |
865 | ||
866 | static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr) | |
867 | { | |
868 | struct ncsi_rsp_gnpts_pkt *rsp; | |
869 | struct ncsi_dev_priv *ndp = nr->ndp; | |
870 | struct ncsi_channel *nc; | |
871 | struct ncsi_channel_stats *ncs; | |
872 | ||
873 | /* Find the channel */ | |
874 | rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp); | |
875 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
876 | NULL, &nc); | |
877 | if (!nc) | |
878 | return -ENODEV; | |
879 | ||
880 | /* Update HNC's statistics */ | |
881 | ncs = &nc->stats; | |
882 | ncs->pt_tx_pkts = ntohl(rsp->tx_pkts); | |
883 | ncs->pt_tx_dropped = ntohl(rsp->tx_dropped); | |
884 | ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err); | |
885 | ncs->pt_tx_us_err = ntohl(rsp->tx_us_err); | |
886 | ncs->pt_rx_pkts = ntohl(rsp->rx_pkts); | |
887 | ncs->pt_rx_dropped = ntohl(rsp->rx_dropped); | |
888 | ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err); | |
889 | ncs->pt_rx_us_err = ntohl(rsp->rx_us_err); | |
890 | ncs->pt_rx_os_err = ntohl(rsp->rx_os_err); | |
891 | ||
892 | return 0; | |
893 | } | |
894 | ||
895 | static int ncsi_rsp_handler_gps(struct ncsi_request *nr) | |
896 | { | |
897 | struct ncsi_rsp_gps_pkt *rsp; | |
898 | struct ncsi_dev_priv *ndp = nr->ndp; | |
899 | struct ncsi_package *np; | |
900 | ||
901 | /* Find the package */ | |
902 | rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp); | |
903 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
904 | &np, NULL); | |
905 | if (!np) | |
906 | return -ENODEV; | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr) | |
912 | { | |
913 | struct ncsi_rsp_gpuuid_pkt *rsp; | |
914 | struct ncsi_dev_priv *ndp = nr->ndp; | |
915 | struct ncsi_package *np; | |
916 | ||
917 | /* Find the package */ | |
918 | rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp); | |
919 | ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, | |
920 | &np, NULL); | |
921 | if (!np) | |
922 | return -ENODEV; | |
923 | ||
924 | memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid)); | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | static struct ncsi_rsp_handler { | |
930 | unsigned char type; | |
931 | int payload; | |
932 | int (*handler)(struct ncsi_request *nr); | |
933 | } ncsi_rsp_handlers[] = { | |
934 | { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis }, | |
935 | { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp }, | |
936 | { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp }, | |
937 | { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec }, | |
938 | { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc }, | |
939 | { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc }, | |
940 | { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt }, | |
941 | { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt }, | |
942 | { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae }, | |
943 | { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl }, | |
944 | { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, | |
945 | { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf }, | |
946 | { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev }, | |
947 | { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv }, | |
948 | { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma }, | |
949 | { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf }, | |
950 | { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf }, | |
951 | { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf }, | |
952 | { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf }, | |
953 | { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc }, | |
954 | { NCSI_PKT_RSP_GVI, 36, ncsi_rsp_handler_gvi }, | |
955 | { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, | |
956 | { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp }, | |
957 | { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps }, | |
958 | { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns }, | |
959 | { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts }, | |
960 | { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps }, | |
961 | { NCSI_PKT_RSP_OEM, 0, NULL }, | |
962 | { NCSI_PKT_RSP_PLDM, 0, NULL }, | |
963 | { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid } | |
964 | }; | |
965 | ||
966 | int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev, | |
967 | struct packet_type *pt, struct net_device *orig_dev) | |
968 | { | |
969 | struct ncsi_rsp_handler *nrh = NULL; | |
970 | struct ncsi_dev *nd; | |
971 | struct ncsi_dev_priv *ndp; | |
972 | struct ncsi_request *nr; | |
973 | struct ncsi_pkt_hdr *hdr; | |
974 | unsigned long flags; | |
975 | int payload, i, ret; | |
976 | ||
977 | /* Find the NCSI device */ | |
978 | nd = ncsi_find_dev(dev); | |
979 | ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; | |
980 | if (!ndp) | |
981 | return -ENODEV; | |
982 | ||
7a82ecf4 | 983 | /* Check if it is AEN packet */ |
138635cc | 984 | hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb); |
7a82ecf4 GS |
985 | if (hdr->type == NCSI_PKT_AEN) |
986 | return ncsi_aen_handler(ndp, skb); | |
987 | ||
988 | /* Find the handler */ | |
138635cc GS |
989 | for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) { |
990 | if (ncsi_rsp_handlers[i].type == hdr->type) { | |
991 | if (ncsi_rsp_handlers[i].handler) | |
992 | nrh = &ncsi_rsp_handlers[i]; | |
993 | else | |
994 | nrh = NULL; | |
995 | ||
996 | break; | |
997 | } | |
998 | } | |
999 | ||
1000 | if (!nrh) { | |
1001 | netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n", | |
1002 | hdr->type); | |
1003 | return -ENOENT; | |
1004 | } | |
1005 | ||
1006 | /* Associate with the request */ | |
1007 | spin_lock_irqsave(&ndp->lock, flags); | |
1008 | nr = &ndp->requests[hdr->id]; | |
1009 | if (!nr->used) { | |
1010 | spin_unlock_irqrestore(&ndp->lock, flags); | |
1011 | return -ENODEV; | |
1012 | } | |
1013 | ||
1014 | nr->rsp = skb; | |
1015 | if (!nr->enabled) { | |
1016 | spin_unlock_irqrestore(&ndp->lock, flags); | |
1017 | ret = -ENOENT; | |
1018 | goto out; | |
1019 | } | |
1020 | ||
1021 | /* Validate the packet */ | |
1022 | spin_unlock_irqrestore(&ndp->lock, flags); | |
1023 | payload = nrh->payload; | |
1024 | if (payload < 0) | |
1025 | payload = ntohs(hdr->length); | |
1026 | ret = ncsi_validate_rsp_pkt(nr, payload); | |
1027 | if (ret) | |
1028 | goto out; | |
1029 | ||
1030 | /* Process the packet */ | |
1031 | ret = nrh->handler(nr); | |
1032 | out: | |
1033 | ncsi_free_request(nr); | |
1034 | return ret; | |
1035 | } |