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Merge branch 'asoc-5.4' into asoc-next
[linux.git] / net / ncsi / ncsi-rsp.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
138635cc
GS		 2/*
3 * Copyright Gavin Shan, IBM Corporation 2016.
138635cc
GS		 4 */
5
6#include <linux/module.h>
7#include <linux/kernel.h>
8#include <linux/init.h>
9#include <linux/netdevice.h>
1c5c12ee 10#include <linux/etherdevice.h>
138635cc
GS		 11#include <linux/skbuff.h>
12
13#include <net/ncsi.h>
14#include <net/net_namespace.h>
15#include <net/sock.h>
9771b8cc 16#include <net/genetlink.h>
138635cc
GS		 17
18#include "internal.h"
19#include "ncsi-pkt.h"
9771b8cc 20#include "ncsi-netlink.h"
138635cc
GS		 21
22static int ncsi_validate_rsp_pkt(struct ncsi_request *nr,
23 unsigned short payload)
24{
25 struct ncsi_rsp_pkt_hdr *h;
26 u32 checksum;
27 __be32 *pchecksum;
28
29 /* Check NCSI packet header. We don't need validate
30 * the packet type, which should have been checked
31 * before calling this function.
32 */
33 h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(nr->rsp);
9771b8cc
JLD		 34
35 if (h->common.revision != NCSI_PKT_REVISION) {
36 netdev_dbg(nr->ndp->ndev.dev,
37 "NCSI: unsupported header revision\n");
138635cc 38 return -EINVAL;
9771b8cc
JLD		 39 }
40 if (ntohs(h->common.length) != payload) {
41 netdev_dbg(nr->ndp->ndev.dev,
42 "NCSI: payload length mismatched\n");
138635cc 43 return -EINVAL;
9771b8cc 44 }
138635cc
GS		 45
46 /* Check on code and reason */
47 if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED ||
9771b8cc
JLD		 48 ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) {
49 netdev_dbg(nr->ndp->ndev.dev,
96a1b033
TD		 50 "NCSI: non zero response/reason code %04xh, %04xh\n",
51 ntohs(h->code), ntohs(h->reason));
9771b8cc
JLD		 52 return -EPERM;
53 }
138635cc
GS		 54
55 /* Validate checksum, which might be zeroes if the
56 * sender doesn't support checksum according to NCSI
57 * specification.
58 */
96a1b033 59 pchecksum = (__be32 *)((void *)(h + 1) + ALIGN(payload, 4) - 4);
138635cc
GS		 60 if (ntohl(*pchecksum) == 0)
61 return 0;
62
63 checksum = ncsi_calculate_checksum((unsigned char *)h,
64 sizeof(*h) + payload - 4);
9771b8cc
JLD		 65
66 if (*pchecksum != htonl(checksum)) {
96a1b033
TD		 67 netdev_dbg(nr->ndp->ndev.dev,
68 "NCSI: checksum mismatched; recd: %08x calc: %08x\n",
69 *pchecksum, htonl(checksum));
138635cc 70 return -EINVAL;
9771b8cc 71 }
138635cc
GS		 72
73 return 0;
74}
75
76static int ncsi_rsp_handler_cis(struct ncsi_request *nr)
77{
78 struct ncsi_rsp_pkt *rsp;
79 struct ncsi_dev_priv *ndp = nr->ndp;
80 struct ncsi_package *np;
81 struct ncsi_channel *nc;
82 unsigned char id;
83
84 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
85 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, &nc);
86 if (!nc) {
e6f44ed6
GS		 87 if (ndp->flags & NCSI_DEV_PROBED)
88 return -ENXIO;
89
138635cc
GS		 90 id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel);
91 nc = ncsi_add_channel(np, id);
92 }
93
94 return nc ? 0 : -ENODEV;
95}
96
97static int ncsi_rsp_handler_sp(struct ncsi_request *nr)
98{
99 struct ncsi_rsp_pkt *rsp;
100 struct ncsi_dev_priv *ndp = nr->ndp;
101 struct ncsi_package *np;
102 unsigned char id;
103
104 /* Add the package if it's not existing. Otherwise,
105 * to change the state of its child channels.
106 */
107 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
108 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
109 &np, NULL);
110 if (!np) {
e6f44ed6
GS		 111 if (ndp->flags & NCSI_DEV_PROBED)
112 return -ENXIO;
113
138635cc
GS		 114 id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel);
115 np = ncsi_add_package(ndp, id);
116 if (!np)
117 return -ENODEV;
118 }
119
120 return 0;
121}
122
123static int ncsi_rsp_handler_dp(struct ncsi_request *nr)
124{
125 struct ncsi_rsp_pkt *rsp;
126 struct ncsi_dev_priv *ndp = nr->ndp;
127 struct ncsi_package *np;
128 struct ncsi_channel *nc;
129 unsigned long flags;
130
131 /* Find the package */
132 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
133 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
134 &np, NULL);
135 if (!np)
136 return -ENODEV;
137
138 /* Change state of all channels attached to the package */
139 NCSI_FOR_EACH_CHANNEL(np, nc) {
140 spin_lock_irqsave(&nc->lock, flags);
141 nc->state = NCSI_CHANNEL_INACTIVE;
142 spin_unlock_irqrestore(&nc->lock, flags);
143 }
144
145 return 0;
146}
147
148static int ncsi_rsp_handler_ec(struct ncsi_request *nr)
149{
150 struct ncsi_rsp_pkt *rsp;
151 struct ncsi_dev_priv *ndp = nr->ndp;
152 struct ncsi_channel *nc;
153 struct ncsi_channel_mode *ncm;
154
155 /* Find the package and channel */
156 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
157 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
158 NULL, &nc);
159 if (!nc)
160 return -ENODEV;
161
162 ncm = &nc->modes[NCSI_MODE_ENABLE];
163 if (ncm->enable)
04bad8bd 164 return 0;
138635cc
GS		 165
166 ncm->enable = 1;
167 return 0;
168}
169
170static int ncsi_rsp_handler_dc(struct ncsi_request *nr)
171{
172 struct ncsi_rsp_pkt *rsp;
173 struct ncsi_dev_priv *ndp = nr->ndp;
174 struct ncsi_channel *nc;
175 struct ncsi_channel_mode *ncm;
176 int ret;
177
178 ret = ncsi_validate_rsp_pkt(nr, 4);
179 if (ret)
180 return ret;
181
182 /* Find the package and channel */
183 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
184 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
185 NULL, &nc);
186 if (!nc)
187 return -ENODEV;
188
189 ncm = &nc->modes[NCSI_MODE_ENABLE];
190 if (!ncm->enable)
04bad8bd 191 return 0;
138635cc
GS		 192
193 ncm->enable = 0;
194 return 0;
195}
196
197static int ncsi_rsp_handler_rc(struct ncsi_request *nr)
198{
199 struct ncsi_rsp_pkt *rsp;
200 struct ncsi_dev_priv *ndp = nr->ndp;
201 struct ncsi_channel *nc;
202 unsigned long flags;
203
204 /* Find the package and channel */
205 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
206 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
207 NULL, &nc);
208 if (!nc)
209 return -ENODEV;
210
211 /* Update state for the specified channel */
212 spin_lock_irqsave(&nc->lock, flags);
213 nc->state = NCSI_CHANNEL_INACTIVE;
214 spin_unlock_irqrestore(&nc->lock, flags);
215
216 return 0;
217}
218
219static int ncsi_rsp_handler_ecnt(struct ncsi_request *nr)
220{
221 struct ncsi_rsp_pkt *rsp;
222 struct ncsi_dev_priv *ndp = nr->ndp;
223 struct ncsi_channel *nc;
224 struct ncsi_channel_mode *ncm;
225
226 /* Find the package and channel */
227 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
228 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
229 NULL, &nc);
230 if (!nc)
231 return -ENODEV;
232
233 ncm = &nc->modes[NCSI_MODE_TX_ENABLE];
234 if (ncm->enable)
04bad8bd 235 return 0;
138635cc
GS		 236
237 ncm->enable = 1;
238 return 0;
239}
240
241static int ncsi_rsp_handler_dcnt(struct ncsi_request *nr)
242{
243 struct ncsi_rsp_pkt *rsp;
244 struct ncsi_dev_priv *ndp = nr->ndp;
245 struct ncsi_channel *nc;
246 struct ncsi_channel_mode *ncm;
247
248 /* Find the package and channel */
249 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
250 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
251 NULL, &nc);
252 if (!nc)
253 return -ENODEV;
254
255 ncm = &nc->modes[NCSI_MODE_TX_ENABLE];
256 if (!ncm->enable)
04bad8bd 257 return 0;
138635cc 258
8d951a75 259 ncm->enable = 0;
138635cc
GS		 260 return 0;
261}
262
263static int ncsi_rsp_handler_ae(struct ncsi_request *nr)
264{
265 struct ncsi_cmd_ae_pkt *cmd;
266 struct ncsi_rsp_pkt *rsp;
267 struct ncsi_dev_priv *ndp = nr->ndp;
268 struct ncsi_channel *nc;
269 struct ncsi_channel_mode *ncm;
270
271 /* Find the package and channel */
272 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
273 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
274 NULL, &nc);
275 if (!nc)
276 return -ENODEV;
277
278 /* Check if the AEN has been enabled */
279 ncm = &nc->modes[NCSI_MODE_AEN];
280 if (ncm->enable)
04bad8bd 281 return 0;
138635cc
GS		 282
283 /* Update to AEN configuration */
284 cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(nr->cmd);
285 ncm->enable = 1;
286 ncm->data[0] = cmd->mc_id;
287 ncm->data[1] = ntohl(cmd->mode);
288
289 return 0;
290}
291
292static int ncsi_rsp_handler_sl(struct ncsi_request *nr)
293{
294 struct ncsi_cmd_sl_pkt *cmd;
295 struct ncsi_rsp_pkt *rsp;
296 struct ncsi_dev_priv *ndp = nr->ndp;
297 struct ncsi_channel *nc;
298 struct ncsi_channel_mode *ncm;
299
300 /* Find the package and channel */
301 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
302 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
303 NULL, &nc);
304 if (!nc)
305 return -ENODEV;
306
307 cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(nr->cmd);
308 ncm = &nc->modes[NCSI_MODE_LINK];
309 ncm->data[0] = ntohl(cmd->mode);
310 ncm->data[1] = ntohl(cmd->oem_mode);
311
312 return 0;
313}
314
315static int ncsi_rsp_handler_gls(struct ncsi_request *nr)
316{
317 struct ncsi_rsp_gls_pkt *rsp;
318 struct ncsi_dev_priv *ndp = nr->ndp;
319 struct ncsi_channel *nc;
320 struct ncsi_channel_mode *ncm;
e6f44ed6 321 unsigned long flags;
138635cc
GS		 322
323 /* Find the package and channel */
324 rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(nr->rsp);
325 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
326 NULL, &nc);
327 if (!nc)
328 return -ENODEV;
329
330 ncm = &nc->modes[NCSI_MODE_LINK];
331 ncm->data[2] = ntohl(rsp->status);
332 ncm->data[3] = ntohl(rsp->other);
333 ncm->data[4] = ntohl(rsp->oem_status);
334
a0509cbe 335 if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN)
e6f44ed6
GS		 336 return 0;
337
338 /* Reset the channel monitor if it has been enabled */
339 spin_lock_irqsave(&nc->lock, flags);
83afdc6a 340 nc->monitor.state = NCSI_CHANNEL_MONITOR_START;
e6f44ed6
GS		 341 spin_unlock_irqrestore(&nc->lock, flags);
342
138635cc
GS		 343 return 0;
344}
345
346static int ncsi_rsp_handler_svf(struct ncsi_request *nr)
347{
348 struct ncsi_cmd_svf_pkt *cmd;
349 struct ncsi_rsp_pkt *rsp;
350 struct ncsi_dev_priv *ndp = nr->ndp;
351 struct ncsi_channel *nc;
062b3e1b
SMJ		 352 struct ncsi_channel_vlan_filter *ncf;
353 unsigned long flags;
354 void *bitmap;
138635cc
GS		 355
356 /* Find the package and channel */
357 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
358 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
359 NULL, &nc);
360 if (!nc)
361 return -ENODEV;
362
363 cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(nr->cmd);
062b3e1b 364 ncf = &nc->vlan_filter;
990a9d49 365 if (cmd->index == 0 || cmd->index > ncf->n_vids)
138635cc
GS		 366 return -ERANGE;
367
062b3e1b
SMJ		 368 /* Add or remove the VLAN filter. Remember HW indexes from 1 */
369 spin_lock_irqsave(&nc->lock, flags);
370 bitmap = &ncf->bitmap;
138635cc 371 if (!(cmd->enable & 0x1)) {
062b3e1b
SMJ		 372 if (test_and_clear_bit(cmd->index - 1, bitmap))
373 ncf->vids[cmd->index - 1] = 0;
138635cc 374 } else {
062b3e1b
SMJ		 375 set_bit(cmd->index - 1, bitmap);
376 ncf->vids[cmd->index - 1] = ntohs(cmd->vlan);
138635cc 377 }
062b3e1b 378 spin_unlock_irqrestore(&nc->lock, flags);
138635cc 379
062b3e1b 380 return 0;
138635cc
GS		 381}
382
383static int ncsi_rsp_handler_ev(struct ncsi_request *nr)
384{
385 struct ncsi_cmd_ev_pkt *cmd;
386 struct ncsi_rsp_pkt *rsp;
387 struct ncsi_dev_priv *ndp = nr->ndp;
388 struct ncsi_channel *nc;
389 struct ncsi_channel_mode *ncm;
390
391 /* Find the package and channel */
392 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
393 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
394 NULL, &nc);
395 if (!nc)
396 return -ENODEV;
397
398 /* Check if VLAN mode has been enabled */
399 ncm = &nc->modes[NCSI_MODE_VLAN];
400 if (ncm->enable)
04bad8bd 401 return 0;
138635cc
GS		 402
403 /* Update to VLAN mode */
404 cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd);
405 ncm->enable = 1;
406 ncm->data[0] = ntohl(cmd->mode);
407
408 return 0;
409}
410
411static int ncsi_rsp_handler_dv(struct ncsi_request *nr)
412{
413 struct ncsi_rsp_pkt *rsp;
414 struct ncsi_dev_priv *ndp = nr->ndp;
415 struct ncsi_channel *nc;
416 struct ncsi_channel_mode *ncm;
417
418 /* Find the package and channel */
419 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
420 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
421 NULL, &nc);
422 if (!nc)
423 return -ENODEV;
424
425 /* Check if VLAN mode has been enabled */
426 ncm = &nc->modes[NCSI_MODE_VLAN];
427 if (!ncm->enable)
04bad8bd 428 return 0;
138635cc
GS		 429
430 /* Update to VLAN mode */
431 ncm->enable = 0;
432 return 0;
433}
434
435static int ncsi_rsp_handler_sma(struct ncsi_request *nr)
436{
437 struct ncsi_cmd_sma_pkt *cmd;
438 struct ncsi_rsp_pkt *rsp;
439 struct ncsi_dev_priv *ndp = nr->ndp;
440 struct ncsi_channel *nc;
062b3e1b
SMJ		 441 struct ncsi_channel_mac_filter *ncf;
442 unsigned long flags;
138635cc 443 void *bitmap;
062b3e1b
SMJ		 444 bool enabled;
445 int index;
446
138635cc
GS		 447
448 /* Find the package and channel */
449 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
450 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
451 NULL, &nc);
452 if (!nc)
453 return -ENODEV;
454
455 /* According to NCSI spec 1.01, the mixed filter table
456 * isn't supported yet.
457 */
458 cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd);
062b3e1b
SMJ		 459 enabled = cmd->at_e & 0x1;
460 ncf = &nc->mac_filter;
461 bitmap = &ncf->bitmap;
138635cc 462
990a9d49
DC		 463 if (cmd->index == 0 ||
464 cmd->index > ncf->n_uc + ncf->n_mc + ncf->n_mixed)
138635cc
GS		 465 return -ERANGE;
466
062b3e1b
SMJ		 467 index = (cmd->index - 1) * ETH_ALEN;
468 spin_lock_irqsave(&nc->lock, flags);
469 if (enabled) {
470 set_bit(cmd->index - 1, bitmap);
471 memcpy(&ncf->addrs[index], cmd->mac, ETH_ALEN);
138635cc 472 } else {
062b3e1b
SMJ		 473 clear_bit(cmd->index - 1, bitmap);
474 memset(&ncf->addrs[index], 0, ETH_ALEN);
138635cc 475 }
062b3e1b 476 spin_unlock_irqrestore(&nc->lock, flags);
138635cc
GS		 477
478 return 0;
479}
480
481static int ncsi_rsp_handler_ebf(struct ncsi_request *nr)
482{
483 struct ncsi_cmd_ebf_pkt *cmd;
484 struct ncsi_rsp_pkt *rsp;
485 struct ncsi_dev_priv *ndp = nr->ndp;
486 struct ncsi_channel *nc;
487 struct ncsi_channel_mode *ncm;
488
489 /* Find the package and channel */
490 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
491 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc);
492 if (!nc)
493 return -ENODEV;
494
495 /* Check if broadcast filter has been enabled */
496 ncm = &nc->modes[NCSI_MODE_BC];
497 if (ncm->enable)
04bad8bd 498 return 0;
138635cc
GS		 499
500 /* Update to broadcast filter mode */
501 cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd);
502 ncm->enable = 1;
503 ncm->data[0] = ntohl(cmd->mode);
504
505 return 0;
506}
507
508static int ncsi_rsp_handler_dbf(struct ncsi_request *nr)
509{
510 struct ncsi_rsp_pkt *rsp;
511 struct ncsi_dev_priv *ndp = nr->ndp;
512 struct ncsi_channel *nc;
513 struct ncsi_channel_mode *ncm;
514
515 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
516 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
517 NULL, &nc);
518 if (!nc)
519 return -ENODEV;
520
521 /* Check if broadcast filter isn't enabled */
522 ncm = &nc->modes[NCSI_MODE_BC];
523 if (!ncm->enable)
04bad8bd 524 return 0;
138635cc
GS		 525
526 /* Update to broadcast filter mode */
527 ncm->enable = 0;
528 ncm->data[0] = 0;
529
530 return 0;
531}
532
533static int ncsi_rsp_handler_egmf(struct ncsi_request *nr)
534{
535 struct ncsi_cmd_egmf_pkt *cmd;
536 struct ncsi_rsp_pkt *rsp;
537 struct ncsi_dev_priv *ndp = nr->ndp;
538 struct ncsi_channel *nc;
539 struct ncsi_channel_mode *ncm;
540
541 /* Find the channel */
542 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
543 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
544 NULL, &nc);
545 if (!nc)
546 return -ENODEV;
547
548 /* Check if multicast filter has been enabled */
549 ncm = &nc->modes[NCSI_MODE_MC];
550 if (ncm->enable)
04bad8bd 551 return 0;
138635cc
GS		 552
553 /* Update to multicast filter mode */
554 cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd);
555 ncm->enable = 1;
556 ncm->data[0] = ntohl(cmd->mode);
557
558 return 0;
559}
560
561static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr)
562{
563 struct ncsi_rsp_pkt *rsp;
564 struct ncsi_dev_priv *ndp = nr->ndp;
565 struct ncsi_channel *nc;
566 struct ncsi_channel_mode *ncm;
567
568 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
569 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
570 NULL, &nc);
571 if (!nc)
572 return -ENODEV;
573
574 /* Check if multicast filter has been enabled */
575 ncm = &nc->modes[NCSI_MODE_MC];
576 if (!ncm->enable)
04bad8bd 577 return 0;
138635cc
GS		 578
579 /* Update to multicast filter mode */
580 ncm->enable = 0;
581 ncm->data[0] = 0;
582
583 return 0;
584}
585
586static int ncsi_rsp_handler_snfc(struct ncsi_request *nr)
587{
588 struct ncsi_cmd_snfc_pkt *cmd;
589 struct ncsi_rsp_pkt *rsp;
590 struct ncsi_dev_priv *ndp = nr->ndp;
591 struct ncsi_channel *nc;
592 struct ncsi_channel_mode *ncm;
593
594 /* Find the channel */
595 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
596 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
597 NULL, &nc);
598 if (!nc)
599 return -ENODEV;
600
601 /* Check if flow control has been enabled */
602 ncm = &nc->modes[NCSI_MODE_FC];
603 if (ncm->enable)
04bad8bd 604 return 0;
138635cc
GS		 605
606 /* Update to flow control mode */
607 cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd);
608 ncm->enable = 1;
609 ncm->data[0] = cmd->mode;
610
611 return 0;
612}
613
16e8c4ca
VK		 614/* Response handler for Mellanox command Get Mac Address */
615static int ncsi_rsp_handler_oem_mlx_gma(struct ncsi_request *nr)
616{
617 struct ncsi_dev_priv *ndp = nr->ndp;
618 struct net_device *ndev = ndp->ndev.dev;
619 const struct net_device_ops *ops = ndev->netdev_ops;
620 struct ncsi_rsp_oem_pkt *rsp;
621 struct sockaddr saddr;
622 int ret = 0;
623
624 /* Get the response header */
625 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
626
627 saddr.sa_family = ndev->type;
628 ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
629 memcpy(saddr.sa_data, &rsp->data[MLX_MAC_ADDR_OFFSET], ETH_ALEN);
630 ret = ops->ndo_set_mac_address(ndev, &saddr);
631 if (ret < 0)
632 netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n");
633
634 return ret;
635}
636
637/* Response handler for Mellanox card */
638static int ncsi_rsp_handler_oem_mlx(struct ncsi_request *nr)
639{
640 struct ncsi_rsp_oem_mlx_pkt *mlx;
641 struct ncsi_rsp_oem_pkt *rsp;
642
643 /* Get the response header */
644 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
645 mlx = (struct ncsi_rsp_oem_mlx_pkt *)(rsp->data);
646
647 if (mlx->cmd == NCSI_OEM_MLX_CMD_GMA &&
648 mlx->param == NCSI_OEM_MLX_CMD_GMA_PARAM)
649 return ncsi_rsp_handler_oem_mlx_gma(nr);
650 return 0;
651}
652
cb10c7c0
VK		 653/* Response handler for Broadcom command Get Mac Address */
654static int ncsi_rsp_handler_oem_bcm_gma(struct ncsi_request *nr)
655{
656 struct ncsi_dev_priv *ndp = nr->ndp;
657 struct net_device *ndev = ndp->ndev.dev;
658 const struct net_device_ops *ops = ndev->netdev_ops;
659 struct ncsi_rsp_oem_pkt *rsp;
660 struct sockaddr saddr;
661 int ret = 0;
662
663 /* Get the response header */
664 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
665
666 saddr.sa_family = ndev->type;
667 ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
668 memcpy(saddr.sa_data, &rsp->data[BCM_MAC_ADDR_OFFSET], ETH_ALEN);
669 /* Increase mac address by 1 for BMC's address */
1c5c12ee
TR		 670 eth_addr_inc((u8 *)saddr.sa_data);
671 if (!is_valid_ether_addr((const u8 *)saddr.sa_data))
672 return -ENXIO;
673
cb10c7c0
VK		 674 ret = ops->ndo_set_mac_address(ndev, &saddr);
675 if (ret < 0)
676 netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n");
677
678 return ret;
679}
680
681/* Response handler for Broadcom card */
682static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr)
683{
684 struct ncsi_rsp_oem_bcm_pkt *bcm;
685 struct ncsi_rsp_oem_pkt *rsp;
686
687 /* Get the response header */
688 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
689 bcm = (struct ncsi_rsp_oem_bcm_pkt *)(rsp->data);
690
691 if (bcm->type == NCSI_OEM_BCM_CMD_GMA)
692 return ncsi_rsp_handler_oem_bcm_gma(nr);
693 return 0;
694}
695
fb4ee675
VK		 696static struct ncsi_rsp_oem_handler {
697 unsigned int mfr_id;
698 int (*handler)(struct ncsi_request *nr);
699} ncsi_rsp_oem_handlers[] = {
16e8c4ca 700 { NCSI_OEM_MFR_MLX_ID, ncsi_rsp_handler_oem_mlx },
cb10c7c0 701 { NCSI_OEM_MFR_BCM_ID, ncsi_rsp_handler_oem_bcm }
fb4ee675
VK		 702};
703
704/* Response handler for OEM command */
705static int ncsi_rsp_handler_oem(struct ncsi_request *nr)
706{
fb4ee675 707 struct ncsi_rsp_oem_handler *nrh = NULL;
cb10c7c0 708 struct ncsi_rsp_oem_pkt *rsp;
fb4ee675
VK		 709 unsigned int mfr_id, i;
710
711 /* Get the response header */
712 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
713 mfr_id = ntohl(rsp->mfr_id);
714
715 /* Check for manufacturer id and Find the handler */
716 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_oem_handlers); i++) {
717 if (ncsi_rsp_oem_handlers[i].mfr_id == mfr_id) {
718 if (ncsi_rsp_oem_handlers[i].handler)
719 nrh = &ncsi_rsp_oem_handlers[i];
720 else
721 nrh = NULL;
722
723 break;
724 }
725 }
726
727 if (!nrh) {
728 netdev_err(nr->ndp->ndev.dev, "Received unrecognized OEM packet with MFR-ID (0x%x)\n",
729 mfr_id);
730 return -ENOENT;
731 }
732
733 /* Process the packet */
734 return nrh->handler(nr);
735}
736
138635cc
GS		 737static int ncsi_rsp_handler_gvi(struct ncsi_request *nr)
738{
739 struct ncsi_rsp_gvi_pkt *rsp;
740 struct ncsi_dev_priv *ndp = nr->ndp;
741 struct ncsi_channel *nc;
742 struct ncsi_channel_version *ncv;
743 int i;
744
745 /* Find the channel */
746 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp);
747 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
748 NULL, &nc);
749 if (!nc)
750 return -ENODEV;
751
752 /* Update to channel's version info */
753 ncv = &nc->version;
754 ncv->version = ntohl(rsp->ncsi_version);
755 ncv->alpha2 = rsp->alpha2;
756 memcpy(ncv->fw_name, rsp->fw_name, 12);
757 ncv->fw_version = ntohl(rsp->fw_version);
758 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++)
759 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]);
760 ncv->mf_id = ntohl(rsp->mf_id);
761
762 return 0;
763}
764
765static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
766{
767 struct ncsi_rsp_gc_pkt *rsp;
768 struct ncsi_dev_priv *ndp = nr->ndp;
769 struct ncsi_channel *nc;
062b3e1b 770 size_t size;
138635cc
GS		 771
772 /* Find the channel */
773 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp);
774 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
775 NULL, &nc);
776 if (!nc)
777 return -ENODEV;
778
779 /* Update channel's capabilities */
780 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) &
781 NCSI_CAP_GENERIC_MASK;
782 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) &
783 NCSI_CAP_BC_MASK;
784 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) &
785 NCSI_CAP_MC_MASK;
786 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap);
787 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) &
788 NCSI_CAP_AEN_MASK;
789 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode &
790 NCSI_CAP_VLAN_MASK;
791
062b3e1b 792 size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN;
b0949618 793 nc->mac_filter.addrs = kzalloc(size, GFP_ATOMIC);
062b3e1b
SMJ		 794 if (!nc->mac_filter.addrs)
795 return -ENOMEM;
796 nc->mac_filter.n_uc = rsp->uc_cnt;
797 nc->mac_filter.n_mc = rsp->mc_cnt;
798 nc->mac_filter.n_mixed = rsp->mixed_cnt;
799
800 nc->vlan_filter.vids = kcalloc(rsp->vlan_cnt,
801 sizeof(*nc->vlan_filter.vids),
b0949618 802 GFP_ATOMIC);
062b3e1b
SMJ		 803 if (!nc->vlan_filter.vids)
804 return -ENOMEM;
805 /* Set VLAN filters active so they are cleared in the first
806 * configuration state
807 */
808 nc->vlan_filter.bitmap = U64_MAX;
809 nc->vlan_filter.n_vids = rsp->vlan_cnt;
138635cc
GS		 810
811 return 0;
812}
813
814static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
815{
062b3e1b
SMJ		 816 struct ncsi_channel_vlan_filter *ncvf;
817 struct ncsi_channel_mac_filter *ncmf;
138635cc 818 struct ncsi_dev_priv *ndp = nr->ndp;
062b3e1b 819 struct ncsi_rsp_gp_pkt *rsp;
138635cc 820 struct ncsi_channel *nc;
062b3e1b 821 unsigned short enable;
138635cc 822 unsigned char *pdata;
062b3e1b
SMJ		 823 unsigned long flags;
824 void *bitmap;
825 int i;
138635cc
GS		 826
827 /* Find the channel */
828 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp);
829 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
830 NULL, &nc);
831 if (!nc)
832 return -ENODEV;
833
834 /* Modes with explicit enabled indications */
835 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */
836 nc->modes[NCSI_MODE_BC].enable = 1;
837 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode);
838 }
839 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */
840 nc->modes[NCSI_MODE_ENABLE].enable = 1;
841 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */
842 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1;
843 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */
844 nc->modes[NCSI_MODE_MC].enable = 1;
845
846 /* Modes without explicit enabled indications */
847 nc->modes[NCSI_MODE_LINK].enable = 1;
848 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode);
849 nc->modes[NCSI_MODE_VLAN].enable = 1;
850 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode;
851 nc->modes[NCSI_MODE_FC].enable = 1;
852 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode;
853 nc->modes[NCSI_MODE_AEN].enable = 1;
854 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode);
855
856 /* MAC addresses filter table */
857 pdata = (unsigned char *)rsp + 48;
858 enable = rsp->mac_enable;
062b3e1b
SMJ		 859 ncmf = &nc->mac_filter;
860 spin_lock_irqsave(&nc->lock, flags);
861 bitmap = &ncmf->bitmap;
138635cc 862 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) {
138635cc 863 if (!(enable & (0x1 << i)))
062b3e1b
SMJ		 864 clear_bit(i, bitmap);
865 else
866 set_bit(i, bitmap);
138635cc 867
062b3e1b 868 memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN);
138635cc 869 }
062b3e1b 870 spin_unlock_irqrestore(&nc->lock, flags);
138635cc
GS		 871
872 /* VLAN filter table */
873 enable = ntohs(rsp->vlan_enable);
062b3e1b
SMJ		 874 ncvf = &nc->vlan_filter;
875 bitmap = &ncvf->bitmap;
876 spin_lock_irqsave(&nc->lock, flags);
138635cc
GS		 877 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) {
878 if (!(enable & (0x1 << i)))
062b3e1b
SMJ		 879 clear_bit(i, bitmap);
880 else
881 set_bit(i, bitmap);
138635cc 882
062b3e1b 883 ncvf->vids[i] = ntohs(*(__be16 *)pdata);
138635cc 884 }
062b3e1b 885 spin_unlock_irqrestore(&nc->lock, flags);
138635cc
GS		 886
887 return 0;
888}
889
890static int ncsi_rsp_handler_gcps(struct ncsi_request *nr)
891{
892 struct ncsi_rsp_gcps_pkt *rsp;
893 struct ncsi_dev_priv *ndp = nr->ndp;
894 struct ncsi_channel *nc;
895 struct ncsi_channel_stats *ncs;
896
897 /* Find the channel */
898 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp);
899 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
900 NULL, &nc);
901 if (!nc)
902 return -ENODEV;
903
904 /* Update HNC's statistics */
905 ncs = &nc->stats;
906 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi);
907 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo);
908 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes);
909 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes);
910 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts);
911 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts);
912 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts);
913 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts);
914 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts);
915 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts);
916 ncs->hnc_fcs_err = ntohl(rsp->fcs_err);
917 ncs->hnc_align_err = ntohl(rsp->align_err);
918 ncs->hnc_false_carrier = ntohl(rsp->false_carrier);
919 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts);
920 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts);
921 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon);
922 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff);
923 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon);
924 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff);
925 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision);
926 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision);
927 ncs->hnc_l_collision = ntohl(rsp->l_collision);
928 ncs->hnc_e_collision = ntohl(rsp->e_collision);
929 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames);
930 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames);
931 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames);
932 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames);
933 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames);
934 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames);
935 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames);
936 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames);
937 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames);
938 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames);
939 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames);
940 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames);
941 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames);
942 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames);
943 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames);
944 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes);
945 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts);
946 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts);
947
948 return 0;
949}
950
951static int ncsi_rsp_handler_gns(struct ncsi_request *nr)
952{
953 struct ncsi_rsp_gns_pkt *rsp;
954 struct ncsi_dev_priv *ndp = nr->ndp;
955 struct ncsi_channel *nc;
956 struct ncsi_channel_stats *ncs;
957
958 /* Find the channel */
959 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp);
960 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
961 NULL, &nc);
962 if (!nc)
963 return -ENODEV;
964
965 /* Update HNC's statistics */
966 ncs = &nc->stats;
967 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds);
968 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds);
969 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs);
970 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs);
971 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts);
972 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts);
973 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts);
974
975 return 0;
976}
977
978static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr)
979{
980 struct ncsi_rsp_gnpts_pkt *rsp;
981 struct ncsi_dev_priv *ndp = nr->ndp;
982 struct ncsi_channel *nc;
983 struct ncsi_channel_stats *ncs;
984
985 /* Find the channel */
986 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp);
987 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
988 NULL, &nc);
989 if (!nc)
990 return -ENODEV;
991
992 /* Update HNC's statistics */
993 ncs = &nc->stats;
994 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts);
995 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped);
996 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err);
997 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err);
998 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts);
999 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped);
1000 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err);
1001 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err);
1002 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err);
1003
1004 return 0;
1005}
1006
1007static int ncsi_rsp_handler_gps(struct ncsi_request *nr)
1008{
1009 struct ncsi_rsp_gps_pkt *rsp;
1010 struct ncsi_dev_priv *ndp = nr->ndp;
1011 struct ncsi_package *np;
1012
1013 /* Find the package */
1014 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp);
1015 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
1016 &np, NULL);
1017 if (!np)
1018 return -ENODEV;
1019
1020 return 0;
1021}
1022
1023static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr)
1024{
1025 struct ncsi_rsp_gpuuid_pkt *rsp;
1026 struct ncsi_dev_priv *ndp = nr->ndp;
1027 struct ncsi_package *np;
1028
1029 /* Find the package */
1030 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp);
1031 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
1032 &np, NULL);
1033 if (!np)
1034 return -ENODEV;
1035
1036 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid));
1037
1038 return 0;
1039}
1040
9771b8cc
JLD		 1041static int ncsi_rsp_handler_netlink(struct ncsi_request *nr)
1042{
1043 struct ncsi_dev_priv *ndp = nr->ndp;
1044 struct ncsi_rsp_pkt *rsp;
1045 struct ncsi_package *np;
1046 struct ncsi_channel *nc;
1047 int ret;
1048
1049 /* Find the package */
1050 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
1051 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
1052 &np, &nc);
1053 if (!np)
1054 return -ENODEV;
1055
1056 ret = ncsi_send_netlink_rsp(nr, np, nc);
1057
1058 return ret;
1059}
1060
138635cc
GS		 1061static struct ncsi_rsp_handler {
1062 unsigned char type;
1063 int payload;
1064 int (*handler)(struct ncsi_request *nr);
1065} ncsi_rsp_handlers[] = {
1066 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis },
1067 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp },
1068 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp },
1069 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec },
1070 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc },
1071 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc },
1072 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt },
1073 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt },
1074 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae },
1075 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl },
1076 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
1077 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf },
1078 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev },
1079 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv },
1080 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma },
1081 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf },
1082 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf },
1083 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf },
1084 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf },
1085 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc },
0a90e251 1086 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi },
138635cc
GS		 1087 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
1088 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp },
1089 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps },
1090 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns },
1091 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts },
1092 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps },
fb4ee675 1093 { NCSI_PKT_RSP_OEM, -1, ncsi_rsp_handler_oem },
138635cc
GS		 1094 { NCSI_PKT_RSP_PLDM, 0, NULL },
1095 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid }
1096};
1097
1098int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
1099 struct packet_type *pt, struct net_device *orig_dev)
1100{
1101 struct ncsi_rsp_handler *nrh = NULL;
1102 struct ncsi_dev *nd;
1103 struct ncsi_dev_priv *ndp;
1104 struct ncsi_request *nr;
1105 struct ncsi_pkt_hdr *hdr;
1106 unsigned long flags;
1107 int payload, i, ret;
1108
1109 /* Find the NCSI device */
1110 nd = ncsi_find_dev(dev);
1111 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
1112 if (!ndp)
1113 return -ENODEV;
1114
7a82ecf4 1115 /* Check if it is AEN packet */
138635cc 1116 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
7a82ecf4
GS		 1117 if (hdr->type == NCSI_PKT_AEN)
1118 return ncsi_aen_handler(ndp, skb);
1119
1120 /* Find the handler */
138635cc
GS		 1121 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) {
1122 if (ncsi_rsp_handlers[i].type == hdr->type) {
1123 if (ncsi_rsp_handlers[i].handler)
1124 nrh = &ncsi_rsp_handlers[i];
1125 else
1126 nrh = NULL;
1127
1128 break;
1129 }
1130 }
1131
1132 if (!nrh) {
1133 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n",
1134 hdr->type);
1135 return -ENOENT;
1136 }
1137
1138 /* Associate with the request */
1139 spin_lock_irqsave(&ndp->lock, flags);
1140 nr = &ndp->requests[hdr->id];
1141 if (!nr->used) {
1142 spin_unlock_irqrestore(&ndp->lock, flags);
1143 return -ENODEV;
1144 }
1145
1146 nr->rsp = skb;
1147 if (!nr->enabled) {
1148 spin_unlock_irqrestore(&ndp->lock, flags);
1149 ret = -ENOENT;
1150 goto out;
1151 }
1152
1153 /* Validate the packet */
1154 spin_unlock_irqrestore(&ndp->lock, flags);
1155 payload = nrh->payload;
1156 if (payload < 0)
1157 payload = ntohs(hdr->length);
1158 ret = ncsi_validate_rsp_pkt(nr, payload);
9ef8690b
SMJ		 1159 if (ret) {
1160 netdev_warn(ndp->ndev.dev,
1161 "NCSI: 'bad' packet ignored for type 0x%x\n",
1162 hdr->type);
9771b8cc
JLD		 1163
1164 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) {
1165 if (ret == -EPERM)
1166 goto out_netlink;
1167 else
1168 ncsi_send_netlink_err(ndp->ndev.dev,
1169 nr->snd_seq,
1170 nr->snd_portid,
1171 &nr->nlhdr,
1172 ret);
1173 }
138635cc 1174 goto out;
9ef8690b 1175 }
138635cc
GS		 1176
1177 /* Process the packet */
1178 ret = nrh->handler(nr);
9ef8690b
SMJ		 1179 if (ret)
1180 netdev_err(ndp->ndev.dev,
1181 "NCSI: Handler for packet type 0x%x returned %d\n",
1182 hdr->type, ret);
9771b8cc
JLD		 1183
1184out_netlink:
1185 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) {
1186 ret = ncsi_rsp_handler_netlink(nr);
1187 if (ret) {
1188 netdev_err(ndp->ndev.dev,
1189 "NCSI: Netlink handler for packet type 0x%x returned %d\n",
1190 hdr->type, ret);
1191 }
1192 }
1193
138635cc
GS		 1194out:
1195 ncsi_free_request(nr);
1196 return ret;
1197}
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