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mm: Use static initialization for "srcu"
[linux/fpc-iii.git] / net / ncsi / ncsi-rsp.c
blob087db775b3dc798a3a3d255ddc5ece52fdd41c74
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) {
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
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
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;
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
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
983 /* Check if it is AEN packet */
984 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
985 if (hdr->type == NCSI_PKT_AEN)
986 return ncsi_aen_handler(ndp, skb);
987
988 /* Find the handler */
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 }
Linux with added FPC-III support