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[linux-2.6-block.git] / net / ncsi / ncsi-rsp.c
CommitLineData
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
23static 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
61static 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
82static 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
108static 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
133static 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)
04bad8bd 149 return 0;
138635cc
GS		 150
151 ncm->enable = 1;
152 return 0;
153}
154
155static 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)
04bad8bd 176 return 0;
138635cc
GS		 177
178 ncm->enable = 0;
179 return 0;
180}
181
182static 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
204static 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)
04bad8bd 220 return 0;
138635cc
GS		 221
222 ncm->enable = 1;
223 return 0;
224}
225
226static 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)
04bad8bd 242 return 0;
138635cc
GS		 243
244 ncm->enable = 1;
245 return 0;
246}
247
248static 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)
04bad8bd 266 return 0;
138635cc
GS		 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
277static 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
300static 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
a0509cbe 320 if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN)
e6f44ed6
GS		 321 return 0;
322
323 /* Reset the channel monitor if it has been enabled */
324 spin_lock_irqsave(&nc->lock, flags);
83afdc6a 325 nc->monitor.state = NCSI_CHANNEL_MONITOR_START;
e6f44ed6
GS		 326 spin_unlock_irqrestore(&nc->lock, flags);
327
138635cc
GS		 328 return 0;
329}
330
331static 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)) {
8579a67e
SMJ		 357 /* HW indexes from 1 */
358 ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index - 1);
138635cc
GS		 359 } else {
360 vlan = ntohs(cmd->vlan);
361 ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan);
362 }
363
364 return ret;
365}
366
367static int ncsi_rsp_handler_ev(struct ncsi_request *nr)
368{
369 struct ncsi_cmd_ev_pkt *cmd;
370 struct ncsi_rsp_pkt *rsp;
371 struct ncsi_dev_priv *ndp = nr->ndp;
372 struct ncsi_channel *nc;
373 struct ncsi_channel_mode *ncm;
374
375 /* Find the package and channel */
376 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
377 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
378 NULL, &nc);
379 if (!nc)
380 return -ENODEV;
381
382 /* Check if VLAN mode has been enabled */
383 ncm = &nc->modes[NCSI_MODE_VLAN];
384 if (ncm->enable)
04bad8bd 385 return 0;
138635cc
GS		 386
387 /* Update to VLAN mode */
388 cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd);
389 ncm->enable = 1;
390 ncm->data[0] = ntohl(cmd->mode);
391
392 return 0;
393}
394
395static int ncsi_rsp_handler_dv(struct ncsi_request *nr)
396{
397 struct ncsi_rsp_pkt *rsp;
398 struct ncsi_dev_priv *ndp = nr->ndp;
399 struct ncsi_channel *nc;
400 struct ncsi_channel_mode *ncm;
401
402 /* Find the package and channel */
403 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
404 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
405 NULL, &nc);
406 if (!nc)
407 return -ENODEV;
408
409 /* Check if VLAN mode has been enabled */
410 ncm = &nc->modes[NCSI_MODE_VLAN];
411 if (!ncm->enable)
04bad8bd 412 return 0;
138635cc
GS		 413
414 /* Update to VLAN mode */
415 ncm->enable = 0;
416 return 0;
417}
418
419static int ncsi_rsp_handler_sma(struct ncsi_request *nr)
420{
421 struct ncsi_cmd_sma_pkt *cmd;
422 struct ncsi_rsp_pkt *rsp;
423 struct ncsi_dev_priv *ndp = nr->ndp;
424 struct ncsi_channel *nc;
425 struct ncsi_channel_filter *ncf;
426 void *bitmap;
427
428 /* Find the package and channel */
429 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
430 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
431 NULL, &nc);
432 if (!nc)
433 return -ENODEV;
434
435 /* According to NCSI spec 1.01, the mixed filter table
436 * isn't supported yet.
437 */
438 cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd);
439 switch (cmd->at_e >> 5) {
440 case 0x0: /* UC address */
441 ncf = nc->filters[NCSI_FILTER_UC];
442 break;
443 case 0x1: /* MC address */
444 ncf = nc->filters[NCSI_FILTER_MC];
445 break;
446 default:
447 return -EINVAL;
448 }
449
450 /* Sanity check on the filter */
451 if (!ncf)
452 return -ENOENT;
453 else if (cmd->index >= ncf->total)
454 return -ERANGE;
455
456 bitmap = &ncf->bitmap;
457 if (cmd->at_e & 0x1) {
04bad8bd 458 set_bit(cmd->index, bitmap);
138635cc
GS		 459 memcpy(ncf->data + 6 * cmd->index, cmd->mac, 6);
460 } else {
04bad8bd 461 clear_bit(cmd->index, bitmap);
138635cc
GS		 462 memset(ncf->data + 6 * cmd->index, 0, 6);
463 }
464
465 return 0;
466}
467
468static int ncsi_rsp_handler_ebf(struct ncsi_request *nr)
469{
470 struct ncsi_cmd_ebf_pkt *cmd;
471 struct ncsi_rsp_pkt *rsp;
472 struct ncsi_dev_priv *ndp = nr->ndp;
473 struct ncsi_channel *nc;
474 struct ncsi_channel_mode *ncm;
475
476 /* Find the package and channel */
477 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
478 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc);
479 if (!nc)
480 return -ENODEV;
481
482 /* Check if broadcast filter has been enabled */
483 ncm = &nc->modes[NCSI_MODE_BC];
484 if (ncm->enable)
04bad8bd 485 return 0;
138635cc
GS		 486
487 /* Update to broadcast filter mode */
488 cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd);
489 ncm->enable = 1;
490 ncm->data[0] = ntohl(cmd->mode);
491
492 return 0;
493}
494
495static int ncsi_rsp_handler_dbf(struct ncsi_request *nr)
496{
497 struct ncsi_rsp_pkt *rsp;
498 struct ncsi_dev_priv *ndp = nr->ndp;
499 struct ncsi_channel *nc;
500 struct ncsi_channel_mode *ncm;
501
502 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
503 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
504 NULL, &nc);
505 if (!nc)
506 return -ENODEV;
507
508 /* Check if broadcast filter isn't enabled */
509 ncm = &nc->modes[NCSI_MODE_BC];
510 if (!ncm->enable)
04bad8bd 511 return 0;
138635cc
GS		 512
513 /* Update to broadcast filter mode */
514 ncm->enable = 0;
515 ncm->data[0] = 0;
516
517 return 0;
518}
519
520static int ncsi_rsp_handler_egmf(struct ncsi_request *nr)
521{
522 struct ncsi_cmd_egmf_pkt *cmd;
523 struct ncsi_rsp_pkt *rsp;
524 struct ncsi_dev_priv *ndp = nr->ndp;
525 struct ncsi_channel *nc;
526 struct ncsi_channel_mode *ncm;
527
528 /* Find the channel */
529 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
530 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
531 NULL, &nc);
532 if (!nc)
533 return -ENODEV;
534
535 /* Check if multicast filter has been enabled */
536 ncm = &nc->modes[NCSI_MODE_MC];
537 if (ncm->enable)
04bad8bd 538 return 0;
138635cc
GS		 539
540 /* Update to multicast filter mode */
541 cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd);
542 ncm->enable = 1;
543 ncm->data[0] = ntohl(cmd->mode);
544
545 return 0;
546}
547
548static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr)
549{
550 struct ncsi_rsp_pkt *rsp;
551 struct ncsi_dev_priv *ndp = nr->ndp;
552 struct ncsi_channel *nc;
553 struct ncsi_channel_mode *ncm;
554
555 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
556 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
557 NULL, &nc);
558 if (!nc)
559 return -ENODEV;
560
561 /* Check if multicast filter has been enabled */
562 ncm = &nc->modes[NCSI_MODE_MC];
563 if (!ncm->enable)
04bad8bd 564 return 0;
138635cc
GS		 565
566 /* Update to multicast filter mode */
567 ncm->enable = 0;
568 ncm->data[0] = 0;
569
570 return 0;
571}
572
573static int ncsi_rsp_handler_snfc(struct ncsi_request *nr)
574{
575 struct ncsi_cmd_snfc_pkt *cmd;
576 struct ncsi_rsp_pkt *rsp;
577 struct ncsi_dev_priv *ndp = nr->ndp;
578 struct ncsi_channel *nc;
579 struct ncsi_channel_mode *ncm;
580
581 /* Find the channel */
582 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
583 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
584 NULL, &nc);
585 if (!nc)
586 return -ENODEV;
587
588 /* Check if flow control has been enabled */
589 ncm = &nc->modes[NCSI_MODE_FC];
590 if (ncm->enable)
04bad8bd 591 return 0;
138635cc
GS		 592
593 /* Update to flow control mode */
594 cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd);
595 ncm->enable = 1;
596 ncm->data[0] = cmd->mode;
597
598 return 0;
599}
600
601static int ncsi_rsp_handler_gvi(struct ncsi_request *nr)
602{
603 struct ncsi_rsp_gvi_pkt *rsp;
604 struct ncsi_dev_priv *ndp = nr->ndp;
605 struct ncsi_channel *nc;
606 struct ncsi_channel_version *ncv;
607 int i;
608
609 /* Find the channel */
610 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp);
611 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
612 NULL, &nc);
613 if (!nc)
614 return -ENODEV;
615
616 /* Update to channel's version info */
617 ncv = &nc->version;
618 ncv->version = ntohl(rsp->ncsi_version);
619 ncv->alpha2 = rsp->alpha2;
620 memcpy(ncv->fw_name, rsp->fw_name, 12);
621 ncv->fw_version = ntohl(rsp->fw_version);
622 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++)
623 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]);
624 ncv->mf_id = ntohl(rsp->mf_id);
625
626 return 0;
627}
628
629static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
630{
631 struct ncsi_rsp_gc_pkt *rsp;
632 struct ncsi_dev_priv *ndp = nr->ndp;
633 struct ncsi_channel *nc;
634 struct ncsi_channel_filter *ncf;
635 size_t size, entry_size;
636 int cnt, i;
637
638 /* Find the channel */
639 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp);
640 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
641 NULL, &nc);
642 if (!nc)
643 return -ENODEV;
644
645 /* Update channel's capabilities */
646 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) &
647 NCSI_CAP_GENERIC_MASK;
648 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) &
649 NCSI_CAP_BC_MASK;
650 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) &
651 NCSI_CAP_MC_MASK;
652 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap);
653 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) &
654 NCSI_CAP_AEN_MASK;
655 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode &
656 NCSI_CAP_VLAN_MASK;
657
658 /* Build filters */
659 for (i = 0; i < NCSI_FILTER_MAX; i++) {
660 switch (i) {
661 case NCSI_FILTER_VLAN:
662 cnt = rsp->vlan_cnt;
663 entry_size = 2;
664 break;
665 case NCSI_FILTER_MIXED:
666 cnt = rsp->mixed_cnt;
667 entry_size = 6;
668 break;
669 case NCSI_FILTER_MC:
670 cnt = rsp->mc_cnt;
671 entry_size = 6;
672 break;
673 case NCSI_FILTER_UC:
674 cnt = rsp->uc_cnt;
675 entry_size = 6;
676 break;
677 default:
678 continue;
679 }
680
681 if (!cnt || nc->filters[i])
682 continue;
683
684 size = sizeof(*ncf) + cnt * entry_size;
685 ncf = kzalloc(size, GFP_ATOMIC);
686 if (!ncf) {
687 pr_warn("%s: Cannot alloc filter table (%d)\n",
688 __func__, i);
689 return -ENOMEM;
690 }
691
692 ncf->index = i;
693 ncf->total = cnt;
21acf630
SMJ		 694 if (i == NCSI_FILTER_VLAN) {
695 /* Set VLAN filters active so they are cleared in
696 * first configuration state
697 */
698 ncf->bitmap = U64_MAX;
699 } else {
700 ncf->bitmap = 0x0ul;
701 }
138635cc
GS		 702 nc->filters[i] = ncf;
703 }
704
705 return 0;
706}
707
708static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
709{
710 struct ncsi_rsp_gp_pkt *rsp;
711 struct ncsi_dev_priv *ndp = nr->ndp;
712 struct ncsi_channel *nc;
713 unsigned short enable, vlan;
714 unsigned char *pdata;
715 int table, i;
716
717 /* Find the channel */
718 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp);
719 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
720 NULL, &nc);
721 if (!nc)
722 return -ENODEV;
723
724 /* Modes with explicit enabled indications */
725 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */
726 nc->modes[NCSI_MODE_BC].enable = 1;
727 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode);
728 }
729 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */
730 nc->modes[NCSI_MODE_ENABLE].enable = 1;
731 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */
732 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1;
733 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */
734 nc->modes[NCSI_MODE_MC].enable = 1;
735
736 /* Modes without explicit enabled indications */
737 nc->modes[NCSI_MODE_LINK].enable = 1;
738 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode);
739 nc->modes[NCSI_MODE_VLAN].enable = 1;
740 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode;
741 nc->modes[NCSI_MODE_FC].enable = 1;
742 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode;
743 nc->modes[NCSI_MODE_AEN].enable = 1;
744 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode);
745
746 /* MAC addresses filter table */
747 pdata = (unsigned char *)rsp + 48;
748 enable = rsp->mac_enable;
749 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) {
750 if (i >= (nc->filters[NCSI_FILTER_UC]->total +
751 nc->filters[NCSI_FILTER_MC]->total))
752 table = NCSI_FILTER_MIXED;
753 else if (i >= nc->filters[NCSI_FILTER_UC]->total)
754 table = NCSI_FILTER_MC;
755 else
756 table = NCSI_FILTER_UC;
757
758 if (!(enable & (0x1 << i)))
759 continue;
760
761 if (ncsi_find_filter(nc, table, pdata) >= 0)
762 continue;
763
764 ncsi_add_filter(nc, table, pdata);
765 }
766
767 /* VLAN filter table */
768 enable = ntohs(rsp->vlan_enable);
769 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) {
770 if (!(enable & (0x1 << i)))
771 continue;
772
773 vlan = ntohs(*(__be16 *)pdata);
774 if (ncsi_find_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0)
775 continue;
776
777 ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan);
778 }
779
780 return 0;
781}
782
783static int ncsi_rsp_handler_gcps(struct ncsi_request *nr)
784{
785 struct ncsi_rsp_gcps_pkt *rsp;
786 struct ncsi_dev_priv *ndp = nr->ndp;
787 struct ncsi_channel *nc;
788 struct ncsi_channel_stats *ncs;
789
790 /* Find the channel */
791 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp);
792 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
793 NULL, &nc);
794 if (!nc)
795 return -ENODEV;
796
797 /* Update HNC's statistics */
798 ncs = &nc->stats;
799 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi);
800 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo);
801 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes);
802 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes);
803 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts);
804 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts);
805 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts);
806 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts);
807 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts);
808 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts);
809 ncs->hnc_fcs_err = ntohl(rsp->fcs_err);
810 ncs->hnc_align_err = ntohl(rsp->align_err);
811 ncs->hnc_false_carrier = ntohl(rsp->false_carrier);
812 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts);
813 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts);
814 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon);
815 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff);
816 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon);
817 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff);
818 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision);
819 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision);
820 ncs->hnc_l_collision = ntohl(rsp->l_collision);
821 ncs->hnc_e_collision = ntohl(rsp->e_collision);
822 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames);
823 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames);
824 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames);
825 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames);
826 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames);
827 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames);
828 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames);
829 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames);
830 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames);
831 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames);
832 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames);
833 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames);
834 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames);
835 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames);
836 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames);
837 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes);
838 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts);
839 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts);
840
841 return 0;
842}
843
844static int ncsi_rsp_handler_gns(struct ncsi_request *nr)
845{
846 struct ncsi_rsp_gns_pkt *rsp;
847 struct ncsi_dev_priv *ndp = nr->ndp;
848 struct ncsi_channel *nc;
849 struct ncsi_channel_stats *ncs;
850
851 /* Find the channel */
852 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp);
853 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
854 NULL, &nc);
855 if (!nc)
856 return -ENODEV;
857
858 /* Update HNC's statistics */
859 ncs = &nc->stats;
860 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds);
861 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds);
862 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs);
863 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs);
864 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts);
865 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts);
866 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts);
867
868 return 0;
869}
870
871static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr)
872{
873 struct ncsi_rsp_gnpts_pkt *rsp;
874 struct ncsi_dev_priv *ndp = nr->ndp;
875 struct ncsi_channel *nc;
876 struct ncsi_channel_stats *ncs;
877
878 /* Find the channel */
879 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp);
880 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
881 NULL, &nc);
882 if (!nc)
883 return -ENODEV;
884
885 /* Update HNC's statistics */
886 ncs = &nc->stats;
887 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts);
888 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped);
889 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err);
890 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err);
891 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts);
892 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped);
893 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err);
894 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err);
895 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err);
896
897 return 0;
898}
899
900static int ncsi_rsp_handler_gps(struct ncsi_request *nr)
901{
902 struct ncsi_rsp_gps_pkt *rsp;
903 struct ncsi_dev_priv *ndp = nr->ndp;
904 struct ncsi_package *np;
905
906 /* Find the package */
907 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp);
908 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
909 &np, NULL);
910 if (!np)
911 return -ENODEV;
912
913 return 0;
914}
915
916static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr)
917{
918 struct ncsi_rsp_gpuuid_pkt *rsp;
919 struct ncsi_dev_priv *ndp = nr->ndp;
920 struct ncsi_package *np;
921
922 /* Find the package */
923 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp);
924 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
925 &np, NULL);
926 if (!np)
927 return -ENODEV;
928
929 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid));
930
931 return 0;
932}
933
934static struct ncsi_rsp_handler {
935 unsigned char type;
936 int payload;
937 int (*handler)(struct ncsi_request *nr);
938} ncsi_rsp_handlers[] = {
939 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis },
940 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp },
941 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp },
942 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec },
943 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc },
944 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc },
945 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt },
946 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt },
947 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae },
948 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl },
949 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
950 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf },
951 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev },
952 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv },
953 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma },
954 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf },
955 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf },
956 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf },
957 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf },
958 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc },
0a90e251 959 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi },
138635cc
GS		 960 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
961 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp },
962 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps },
963 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns },
964 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts },
965 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps },
966 { NCSI_PKT_RSP_OEM, 0, NULL },
967 { NCSI_PKT_RSP_PLDM, 0, NULL },
968 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid }
969};
970
971int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
972 struct packet_type *pt, struct net_device *orig_dev)
973{
974 struct ncsi_rsp_handler *nrh = NULL;
975 struct ncsi_dev *nd;
976 struct ncsi_dev_priv *ndp;
977 struct ncsi_request *nr;
978 struct ncsi_pkt_hdr *hdr;
979 unsigned long flags;
980 int payload, i, ret;
981
982 /* Find the NCSI device */
983 nd = ncsi_find_dev(dev);
984 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
985 if (!ndp)
986 return -ENODEV;
987
7a82ecf4 988 /* Check if it is AEN packet */
138635cc 989 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
7a82ecf4
GS		 990 if (hdr->type == NCSI_PKT_AEN)
991 return ncsi_aen_handler(ndp, skb);
992
993 /* Find the handler */
138635cc
GS		 994 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) {
995 if (ncsi_rsp_handlers[i].type == hdr->type) {
996 if (ncsi_rsp_handlers[i].handler)
997 nrh = &ncsi_rsp_handlers[i];
998 else
999 nrh = NULL;
1000
1001 break;
1002 }
1003 }
1004
1005 if (!nrh) {
1006 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n",
1007 hdr->type);
1008 return -ENOENT;
1009 }
1010
1011 /* Associate with the request */
1012 spin_lock_irqsave(&ndp->lock, flags);
1013 nr = &ndp->requests[hdr->id];
1014 if (!nr->used) {
1015 spin_unlock_irqrestore(&ndp->lock, flags);
1016 return -ENODEV;
1017 }
1018
1019 nr->rsp = skb;
1020 if (!nr->enabled) {
1021 spin_unlock_irqrestore(&ndp->lock, flags);
1022 ret = -ENOENT;
1023 goto out;
1024 }
1025
1026 /* Validate the packet */
1027 spin_unlock_irqrestore(&ndp->lock, flags);
1028 payload = nrh->payload;
1029 if (payload < 0)
1030 payload = ntohs(hdr->length);
1031 ret = ncsi_validate_rsp_pkt(nr, payload);
9ef8690b
SMJ		 1032 if (ret) {
1033 netdev_warn(ndp->ndev.dev,
1034 "NCSI: 'bad' packet ignored for type 0x%x\n",
1035 hdr->type);
138635cc 1036 goto out;
9ef8690b 1037 }
138635cc
GS		 1038
1039 /* Process the packet */
1040 ret = nrh->handler(nr);
9ef8690b
SMJ		 1041 if (ret)
1042 netdev_err(ndp->ndev.dev,
1043 "NCSI: Handler for packet type 0x%x returned %d\n",
1044 hdr->type, ret);
138635cc
GS		 1045out:
1046 ncsi_free_request(nr);
1047 return ret;
1048}
Linux 6.x block layer and io_uring tree(s)