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
ncsi_validate_rsp_pkt(struct ncsi_request * nr,unsigned short payload)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
ncsi_rsp_handler_cis(struct ncsi_request * nr)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) {
72 if (ndp->flags & NCSI_DEV_PROBED)
73 return -ENXIO;
74
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
ncsi_rsp_handler_sp(struct ncsi_request * nr)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) {
96 if (ndp->flags & NCSI_DEV_PROBED)
97 return -ENXIO;
98
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
ncsi_rsp_handler_dp(struct ncsi_request * nr)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
ncsi_rsp_handler_ec(struct ncsi_request * nr)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 0;
150
151 ncm->enable = 1;
152 return 0;
153 }
154
ncsi_rsp_handler_dc(struct ncsi_request * nr)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 0;
177
178 ncm->enable = 0;
179 return 0;
180 }
181
ncsi_rsp_handler_rc(struct ncsi_request * nr)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
ncsi_rsp_handler_ecnt(struct ncsi_request * nr)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 0;
221
222 ncm->enable = 1;
223 return 0;
224 }
225
ncsi_rsp_handler_dcnt(struct ncsi_request * nr)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 0;
243
244 ncm->enable = 1;
245 return 0;
246 }
247
ncsi_rsp_handler_ae(struct ncsi_request * nr)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 0;
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
ncsi_rsp_handler_sl(struct ncsi_request * nr)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
ncsi_rsp_handler_gls(struct ncsi_request * nr)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;
306 unsigned long flags;
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
320 if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN)
321 return 0;
322
323 /* Reset the channel monitor if it has been enabled */
324 spin_lock_irqsave(&nc->lock, flags);
325 nc->monitor.state = NCSI_CHANNEL_MONITOR_START;
326 spin_unlock_irqrestore(&nc->lock, flags);
327
328 return 0;
329 }
330
ncsi_rsp_handler_svf(struct ncsi_request * nr)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_vlan_filter *ncf;
338 unsigned long flags;
339 void *bitmap;
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->vlan_filter;
350 if (cmd->index == 0 || cmd->index > ncf->n_vids)
351 return -ERANGE;
352
353 /* Add or remove the VLAN filter. Remember HW indexes from 1 */
354 spin_lock_irqsave(&nc->lock, flags);
355 bitmap = &ncf->bitmap;
356 if (!(cmd->enable & 0x1)) {
357 if (test_and_clear_bit(cmd->index - 1, bitmap))
358 ncf->vids[cmd->index - 1] = 0;
359 } else {
360 set_bit(cmd->index - 1, bitmap);
361 ncf->vids[cmd->index - 1] = ntohs(cmd->vlan);
362 }
363 spin_unlock_irqrestore(&nc->lock, flags);
364
365 return 0;
366 }
367
ncsi_rsp_handler_ev(struct ncsi_request * nr)368 static int ncsi_rsp_handler_ev(struct ncsi_request *nr)
369 {
370 struct ncsi_cmd_ev_pkt *cmd;
371 struct ncsi_rsp_pkt *rsp;
372 struct ncsi_dev_priv *ndp = nr->ndp;
373 struct ncsi_channel *nc;
374 struct ncsi_channel_mode *ncm;
375
376 /* Find the package and channel */
377 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
378 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
379 NULL, &nc);
380 if (!nc)
381 return -ENODEV;
382
383 /* Check if VLAN mode has been enabled */
384 ncm = &nc->modes[NCSI_MODE_VLAN];
385 if (ncm->enable)
386 return 0;
387
388 /* Update to VLAN mode */
389 cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd);
390 ncm->enable = 1;
391 ncm->data[0] = ntohl(cmd->mode);
392
393 return 0;
394 }
395
ncsi_rsp_handler_dv(struct ncsi_request * nr)396 static int ncsi_rsp_handler_dv(struct ncsi_request *nr)
397 {
398 struct ncsi_rsp_pkt *rsp;
399 struct ncsi_dev_priv *ndp = nr->ndp;
400 struct ncsi_channel *nc;
401 struct ncsi_channel_mode *ncm;
402
403 /* Find the package and channel */
404 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
405 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
406 NULL, &nc);
407 if (!nc)
408 return -ENODEV;
409
410 /* Check if VLAN mode has been enabled */
411 ncm = &nc->modes[NCSI_MODE_VLAN];
412 if (!ncm->enable)
413 return 0;
414
415 /* Update to VLAN mode */
416 ncm->enable = 0;
417 return 0;
418 }
419
ncsi_rsp_handler_sma(struct ncsi_request * nr)420 static int ncsi_rsp_handler_sma(struct ncsi_request *nr)
421 {
422 struct ncsi_cmd_sma_pkt *cmd;
423 struct ncsi_rsp_pkt *rsp;
424 struct ncsi_dev_priv *ndp = nr->ndp;
425 struct ncsi_channel *nc;
426 struct ncsi_channel_mac_filter *ncf;
427 unsigned long flags;
428 void *bitmap;
429 bool enabled;
430 int index;
431
432
433 /* Find the package and channel */
434 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
435 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
436 NULL, &nc);
437 if (!nc)
438 return -ENODEV;
439
440 /* According to NCSI spec 1.01, the mixed filter table
441 * isn't supported yet.
442 */
443 cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd);
444 enabled = cmd->at_e & 0x1;
445 ncf = &nc->mac_filter;
446 bitmap = &ncf->bitmap;
447
448 if (cmd->index == 0 ||
449 cmd->index > ncf->n_uc + ncf->n_mc + ncf->n_mixed)
450 return -ERANGE;
451
452 index = (cmd->index - 1) * ETH_ALEN;
453 spin_lock_irqsave(&nc->lock, flags);
454 if (enabled) {
455 set_bit(cmd->index - 1, bitmap);
456 memcpy(&ncf->addrs[index], cmd->mac, ETH_ALEN);
457 } else {
458 clear_bit(cmd->index - 1, bitmap);
459 memset(&ncf->addrs[index], 0, ETH_ALEN);
460 }
461 spin_unlock_irqrestore(&nc->lock, flags);
462
463 return 0;
464 }
465
ncsi_rsp_handler_ebf(struct ncsi_request * nr)466 static int ncsi_rsp_handler_ebf(struct ncsi_request *nr)
467 {
468 struct ncsi_cmd_ebf_pkt *cmd;
469 struct ncsi_rsp_pkt *rsp;
470 struct ncsi_dev_priv *ndp = nr->ndp;
471 struct ncsi_channel *nc;
472 struct ncsi_channel_mode *ncm;
473
474 /* Find the package and channel */
475 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
476 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc);
477 if (!nc)
478 return -ENODEV;
479
480 /* Check if broadcast filter has been enabled */
481 ncm = &nc->modes[NCSI_MODE_BC];
482 if (ncm->enable)
483 return 0;
484
485 /* Update to broadcast filter mode */
486 cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd);
487 ncm->enable = 1;
488 ncm->data[0] = ntohl(cmd->mode);
489
490 return 0;
491 }
492
ncsi_rsp_handler_dbf(struct ncsi_request * nr)493 static int ncsi_rsp_handler_dbf(struct ncsi_request *nr)
494 {
495 struct ncsi_rsp_pkt *rsp;
496 struct ncsi_dev_priv *ndp = nr->ndp;
497 struct ncsi_channel *nc;
498 struct ncsi_channel_mode *ncm;
499
500 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
501 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
502 NULL, &nc);
503 if (!nc)
504 return -ENODEV;
505
506 /* Check if broadcast filter isn't enabled */
507 ncm = &nc->modes[NCSI_MODE_BC];
508 if (!ncm->enable)
509 return 0;
510
511 /* Update to broadcast filter mode */
512 ncm->enable = 0;
513 ncm->data[0] = 0;
514
515 return 0;
516 }
517
ncsi_rsp_handler_egmf(struct ncsi_request * nr)518 static int ncsi_rsp_handler_egmf(struct ncsi_request *nr)
519 {
520 struct ncsi_cmd_egmf_pkt *cmd;
521 struct ncsi_rsp_pkt *rsp;
522 struct ncsi_dev_priv *ndp = nr->ndp;
523 struct ncsi_channel *nc;
524 struct ncsi_channel_mode *ncm;
525
526 /* Find the channel */
527 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
528 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
529 NULL, &nc);
530 if (!nc)
531 return -ENODEV;
532
533 /* Check if multicast filter has been enabled */
534 ncm = &nc->modes[NCSI_MODE_MC];
535 if (ncm->enable)
536 return 0;
537
538 /* Update to multicast filter mode */
539 cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd);
540 ncm->enable = 1;
541 ncm->data[0] = ntohl(cmd->mode);
542
543 return 0;
544 }
545
ncsi_rsp_handler_dgmf(struct ncsi_request * nr)546 static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr)
547 {
548 struct ncsi_rsp_pkt *rsp;
549 struct ncsi_dev_priv *ndp = nr->ndp;
550 struct ncsi_channel *nc;
551 struct ncsi_channel_mode *ncm;
552
553 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
554 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
555 NULL, &nc);
556 if (!nc)
557 return -ENODEV;
558
559 /* Check if multicast filter has been enabled */
560 ncm = &nc->modes[NCSI_MODE_MC];
561 if (!ncm->enable)
562 return 0;
563
564 /* Update to multicast filter mode */
565 ncm->enable = 0;
566 ncm->data[0] = 0;
567
568 return 0;
569 }
570
ncsi_rsp_handler_snfc(struct ncsi_request * nr)571 static int ncsi_rsp_handler_snfc(struct ncsi_request *nr)
572 {
573 struct ncsi_cmd_snfc_pkt *cmd;
574 struct ncsi_rsp_pkt *rsp;
575 struct ncsi_dev_priv *ndp = nr->ndp;
576 struct ncsi_channel *nc;
577 struct ncsi_channel_mode *ncm;
578
579 /* Find the channel */
580 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
581 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
582 NULL, &nc);
583 if (!nc)
584 return -ENODEV;
585
586 /* Check if flow control has been enabled */
587 ncm = &nc->modes[NCSI_MODE_FC];
588 if (ncm->enable)
589 return 0;
590
591 /* Update to flow control mode */
592 cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd);
593 ncm->enable = 1;
594 ncm->data[0] = cmd->mode;
595
596 return 0;
597 }
598
ncsi_rsp_handler_gvi(struct ncsi_request * nr)599 static int ncsi_rsp_handler_gvi(struct ncsi_request *nr)
600 {
601 struct ncsi_rsp_gvi_pkt *rsp;
602 struct ncsi_dev_priv *ndp = nr->ndp;
603 struct ncsi_channel *nc;
604 struct ncsi_channel_version *ncv;
605 int i;
606
607 /* Find the channel */
608 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp);
609 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
610 NULL, &nc);
611 if (!nc)
612 return -ENODEV;
613
614 /* Update to channel's version info */
615 ncv = &nc->version;
616 ncv->version = ntohl(rsp->ncsi_version);
617 ncv->alpha2 = rsp->alpha2;
618 memcpy(ncv->fw_name, rsp->fw_name, 12);
619 ncv->fw_version = ntohl(rsp->fw_version);
620 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++)
621 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]);
622 ncv->mf_id = ntohl(rsp->mf_id);
623
624 return 0;
625 }
626
ncsi_rsp_handler_gc(struct ncsi_request * nr)627 static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
628 {
629 struct ncsi_rsp_gc_pkt *rsp;
630 struct ncsi_dev_priv *ndp = nr->ndp;
631 struct ncsi_channel *nc;
632 size_t size;
633
634 /* Find the channel */
635 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp);
636 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
637 NULL, &nc);
638 if (!nc)
639 return -ENODEV;
640
641 /* Update channel's capabilities */
642 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) &
643 NCSI_CAP_GENERIC_MASK;
644 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) &
645 NCSI_CAP_BC_MASK;
646 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) &
647 NCSI_CAP_MC_MASK;
648 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap);
649 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) &
650 NCSI_CAP_AEN_MASK;
651 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode &
652 NCSI_CAP_VLAN_MASK;
653
654 size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN;
655 nc->mac_filter.addrs = kzalloc(size, GFP_ATOMIC);
656 if (!nc->mac_filter.addrs)
657 return -ENOMEM;
658 nc->mac_filter.n_uc = rsp->uc_cnt;
659 nc->mac_filter.n_mc = rsp->mc_cnt;
660 nc->mac_filter.n_mixed = rsp->mixed_cnt;
661
662 nc->vlan_filter.vids = kcalloc(rsp->vlan_cnt,
663 sizeof(*nc->vlan_filter.vids),
664 GFP_ATOMIC);
665 if (!nc->vlan_filter.vids)
666 return -ENOMEM;
667 /* Set VLAN filters active so they are cleared in the first
668 * configuration state
669 */
670 nc->vlan_filter.bitmap = U64_MAX;
671 nc->vlan_filter.n_vids = rsp->vlan_cnt;
672
673 return 0;
674 }
675
ncsi_rsp_handler_gp(struct ncsi_request * nr)676 static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
677 {
678 struct ncsi_channel_vlan_filter *ncvf;
679 struct ncsi_channel_mac_filter *ncmf;
680 struct ncsi_dev_priv *ndp = nr->ndp;
681 struct ncsi_rsp_gp_pkt *rsp;
682 struct ncsi_channel *nc;
683 unsigned short enable;
684 unsigned char *pdata;
685 unsigned long flags;
686 void *bitmap;
687 int i;
688
689 /* Find the channel */
690 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp);
691 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
692 NULL, &nc);
693 if (!nc)
694 return -ENODEV;
695
696 /* Modes with explicit enabled indications */
697 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */
698 nc->modes[NCSI_MODE_BC].enable = 1;
699 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode);
700 }
701 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */
702 nc->modes[NCSI_MODE_ENABLE].enable = 1;
703 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */
704 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1;
705 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */
706 nc->modes[NCSI_MODE_MC].enable = 1;
707
708 /* Modes without explicit enabled indications */
709 nc->modes[NCSI_MODE_LINK].enable = 1;
710 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode);
711 nc->modes[NCSI_MODE_VLAN].enable = 1;
712 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode;
713 nc->modes[NCSI_MODE_FC].enable = 1;
714 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode;
715 nc->modes[NCSI_MODE_AEN].enable = 1;
716 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode);
717
718 /* MAC addresses filter table */
719 pdata = (unsigned char *)rsp + 48;
720 enable = rsp->mac_enable;
721 ncmf = &nc->mac_filter;
722 spin_lock_irqsave(&nc->lock, flags);
723 bitmap = &ncmf->bitmap;
724 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) {
725 if (!(enable & (0x1 << i)))
726 clear_bit(i, bitmap);
727 else
728 set_bit(i, bitmap);
729
730 memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN);
731 }
732 spin_unlock_irqrestore(&nc->lock, flags);
733
734 /* VLAN filter table */
735 enable = ntohs(rsp->vlan_enable);
736 ncvf = &nc->vlan_filter;
737 bitmap = &ncvf->bitmap;
738 spin_lock_irqsave(&nc->lock, flags);
739 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) {
740 if (!(enable & (0x1 << i)))
741 clear_bit(i, bitmap);
742 else
743 set_bit(i, bitmap);
744
745 ncvf->vids[i] = ntohs(*(__be16 *)pdata);
746 }
747 spin_unlock_irqrestore(&nc->lock, flags);
748
749 return 0;
750 }
751
ncsi_rsp_handler_gcps(struct ncsi_request * nr)752 static int ncsi_rsp_handler_gcps(struct ncsi_request *nr)
753 {
754 struct ncsi_rsp_gcps_pkt *rsp;
755 struct ncsi_dev_priv *ndp = nr->ndp;
756 struct ncsi_channel *nc;
757 struct ncsi_channel_stats *ncs;
758
759 /* Find the channel */
760 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp);
761 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
762 NULL, &nc);
763 if (!nc)
764 return -ENODEV;
765
766 /* Update HNC's statistics */
767 ncs = &nc->stats;
768 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi);
769 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo);
770 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes);
771 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes);
772 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts);
773 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts);
774 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts);
775 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts);
776 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts);
777 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts);
778 ncs->hnc_fcs_err = ntohl(rsp->fcs_err);
779 ncs->hnc_align_err = ntohl(rsp->align_err);
780 ncs->hnc_false_carrier = ntohl(rsp->false_carrier);
781 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts);
782 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts);
783 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon);
784 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff);
785 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon);
786 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff);
787 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision);
788 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision);
789 ncs->hnc_l_collision = ntohl(rsp->l_collision);
790 ncs->hnc_e_collision = ntohl(rsp->e_collision);
791 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames);
792 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames);
793 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames);
794 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames);
795 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames);
796 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames);
797 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames);
798 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames);
799 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames);
800 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames);
801 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames);
802 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames);
803 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames);
804 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames);
805 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames);
806 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes);
807 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts);
808 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts);
809
810 return 0;
811 }
812
ncsi_rsp_handler_gns(struct ncsi_request * nr)813 static int ncsi_rsp_handler_gns(struct ncsi_request *nr)
814 {
815 struct ncsi_rsp_gns_pkt *rsp;
816 struct ncsi_dev_priv *ndp = nr->ndp;
817 struct ncsi_channel *nc;
818 struct ncsi_channel_stats *ncs;
819
820 /* Find the channel */
821 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp);
822 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
823 NULL, &nc);
824 if (!nc)
825 return -ENODEV;
826
827 /* Update HNC's statistics */
828 ncs = &nc->stats;
829 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds);
830 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds);
831 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs);
832 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs);
833 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts);
834 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts);
835 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts);
836
837 return 0;
838 }
839
ncsi_rsp_handler_gnpts(struct ncsi_request * nr)840 static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr)
841 {
842 struct ncsi_rsp_gnpts_pkt *rsp;
843 struct ncsi_dev_priv *ndp = nr->ndp;
844 struct ncsi_channel *nc;
845 struct ncsi_channel_stats *ncs;
846
847 /* Find the channel */
848 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp);
849 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
850 NULL, &nc);
851 if (!nc)
852 return -ENODEV;
853
854 /* Update HNC's statistics */
855 ncs = &nc->stats;
856 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts);
857 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped);
858 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err);
859 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err);
860 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts);
861 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped);
862 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err);
863 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err);
864 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err);
865
866 return 0;
867 }
868
ncsi_rsp_handler_gps(struct ncsi_request * nr)869 static int ncsi_rsp_handler_gps(struct ncsi_request *nr)
870 {
871 struct ncsi_rsp_gps_pkt *rsp;
872 struct ncsi_dev_priv *ndp = nr->ndp;
873 struct ncsi_package *np;
874
875 /* Find the package */
876 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp);
877 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
878 &np, NULL);
879 if (!np)
880 return -ENODEV;
881
882 return 0;
883 }
884
ncsi_rsp_handler_gpuuid(struct ncsi_request * nr)885 static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr)
886 {
887 struct ncsi_rsp_gpuuid_pkt *rsp;
888 struct ncsi_dev_priv *ndp = nr->ndp;
889 struct ncsi_package *np;
890
891 /* Find the package */
892 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp);
893 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
894 &np, NULL);
895 if (!np)
896 return -ENODEV;
897
898 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid));
899
900 return 0;
901 }
902
903 static struct ncsi_rsp_handler {
904 unsigned char type;
905 int payload;
906 int (*handler)(struct ncsi_request *nr);
907 } ncsi_rsp_handlers[] = {
908 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis },
909 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp },
910 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp },
911 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec },
912 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc },
913 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc },
914 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt },
915 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt },
916 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae },
917 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl },
918 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
919 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf },
920 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev },
921 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv },
922 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma },
923 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf },
924 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf },
925 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf },
926 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf },
927 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc },
928 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi },
929 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
930 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp },
931 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps },
932 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns },
933 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts },
934 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps },
935 { NCSI_PKT_RSP_OEM, 0, NULL },
936 { NCSI_PKT_RSP_PLDM, 0, NULL },
937 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid }
938 };
939
ncsi_rcv_rsp(struct sk_buff * skb,struct net_device * dev,struct packet_type * pt,struct net_device * orig_dev)940 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
941 struct packet_type *pt, struct net_device *orig_dev)
942 {
943 struct ncsi_rsp_handler *nrh = NULL;
944 struct ncsi_dev *nd;
945 struct ncsi_dev_priv *ndp;
946 struct ncsi_request *nr;
947 struct ncsi_pkt_hdr *hdr;
948 unsigned long flags;
949 int payload, i, ret;
950
951 /* Find the NCSI device */
952 nd = ncsi_find_dev(dev);
953 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
954 if (!ndp)
955 return -ENODEV;
956
957 /* Check if it is AEN packet */
958 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
959 if (hdr->type == NCSI_PKT_AEN)
960 return ncsi_aen_handler(ndp, skb);
961
962 /* Find the handler */
963 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) {
964 if (ncsi_rsp_handlers[i].type == hdr->type) {
965 if (ncsi_rsp_handlers[i].handler)
966 nrh = &ncsi_rsp_handlers[i];
967 else
968 nrh = NULL;
969
970 break;
971 }
972 }
973
974 if (!nrh) {
975 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n",
976 hdr->type);
977 return -ENOENT;
978 }
979
980 /* Associate with the request */
981 spin_lock_irqsave(&ndp->lock, flags);
982 nr = &ndp->requests[hdr->id];
983 if (!nr->used) {
984 spin_unlock_irqrestore(&ndp->lock, flags);
985 return -ENODEV;
986 }
987
988 nr->rsp = skb;
989 if (!nr->enabled) {
990 spin_unlock_irqrestore(&ndp->lock, flags);
991 ret = -ENOENT;
992 goto out;
993 }
994
995 /* Validate the packet */
996 spin_unlock_irqrestore(&ndp->lock, flags);
997 payload = nrh->payload;
998 if (payload < 0)
999 payload = ntohs(hdr->length);
1000 ret = ncsi_validate_rsp_pkt(nr, payload);
1001 if (ret) {
1002 netdev_warn(ndp->ndev.dev,
1003 "NCSI: 'bad' packet ignored for type 0x%x\n",
1004 hdr->type);
1005 goto out;
1006 }
1007
1008 /* Process the packet */
1009 ret = nrh->handler(nr);
1010 if (ret)
1011 netdev_err(ndp->ndev.dev,
1012 "NCSI: Handler for packet type 0x%x returned %d\n",
1013 hdr->type, ret);
1014 out:
1015 ncsi_free_request(nr);
1016 return ret;
1017 }
1018
