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Merge tag 'upstream-4.20-rc7' of git://git.infradead.org/linux-ubifs
[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>
9771b8cc 19#include <net/genetlink.h>
138635cc
GS		 20
21#include "internal.h"
22#include "ncsi-pkt.h"
9771b8cc 23#include "ncsi-netlink.h"
138635cc
GS		 24
25static int ncsi_validate_rsp_pkt(struct ncsi_request *nr,
26 unsigned short payload)
27{
28 struct ncsi_rsp_pkt_hdr *h;
29 u32 checksum;
30 __be32 *pchecksum;
31
32 /* Check NCSI packet header. We don't need validate
33 * the packet type, which should have been checked
34 * before calling this function.
35 */
36 h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(nr->rsp);
9771b8cc
JLD		 37
38 if (h->common.revision != NCSI_PKT_REVISION) {
39 netdev_dbg(nr->ndp->ndev.dev,
40 "NCSI: unsupported header revision\n");
138635cc 41 return -EINVAL;
9771b8cc
JLD		 42 }
43 if (ntohs(h->common.length) != payload) {
44 netdev_dbg(nr->ndp->ndev.dev,
45 "NCSI: payload length mismatched\n");
138635cc 46 return -EINVAL;
9771b8cc 47 }
138635cc
GS		 48
49 /* Check on code and reason */
50 if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED ||
9771b8cc
JLD		 51 ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) {
52 netdev_dbg(nr->ndp->ndev.dev,
53 "NCSI: non zero response/reason code\n");
54 return -EPERM;
55 }
138635cc
GS		 56
57 /* Validate checksum, which might be zeroes if the
58 * sender doesn't support checksum according to NCSI
59 * specification.
60 */
61 pchecksum = (__be32 *)((void *)(h + 1) + payload - 4);
62 if (ntohl(*pchecksum) == 0)
63 return 0;
64
65 checksum = ncsi_calculate_checksum((unsigned char *)h,
66 sizeof(*h) + payload - 4);
9771b8cc
JLD		 67
68 if (*pchecksum != htonl(checksum)) {
69 netdev_dbg(nr->ndp->ndev.dev, "NCSI: checksum mismatched\n");
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
GS		 258
259 ncm->enable = 1;
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
cb10c7c0
VK		 614/* Response handler for Broadcom command Get Mac Address */
615static int ncsi_rsp_handler_oem_bcm_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[BCM_MAC_ADDR_OFFSET], ETH_ALEN);
630 /* Increase mac address by 1 for BMC's address */
631 saddr.sa_data[ETH_ALEN - 1]++;
632 ret = ops->ndo_set_mac_address(ndev, &saddr);
633 if (ret < 0)
634 netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n");
635
636 return ret;
637}
638
639/* Response handler for Broadcom card */
640static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr)
641{
642 struct ncsi_rsp_oem_bcm_pkt *bcm;
643 struct ncsi_rsp_oem_pkt *rsp;
644
645 /* Get the response header */
646 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
647 bcm = (struct ncsi_rsp_oem_bcm_pkt *)(rsp->data);
648
649 if (bcm->type == NCSI_OEM_BCM_CMD_GMA)
650 return ncsi_rsp_handler_oem_bcm_gma(nr);
651 return 0;
652}
653
fb4ee675
VK		 654static struct ncsi_rsp_oem_handler {
655 unsigned int mfr_id;
656 int (*handler)(struct ncsi_request *nr);
657} ncsi_rsp_oem_handlers[] = {
658 { NCSI_OEM_MFR_MLX_ID, NULL },
cb10c7c0 659 { NCSI_OEM_MFR_BCM_ID, ncsi_rsp_handler_oem_bcm }
fb4ee675
VK		 660};
661
662/* Response handler for OEM command */
663static int ncsi_rsp_handler_oem(struct ncsi_request *nr)
664{
fb4ee675 665 struct ncsi_rsp_oem_handler *nrh = NULL;
cb10c7c0 666 struct ncsi_rsp_oem_pkt *rsp;
fb4ee675
VK		 667 unsigned int mfr_id, i;
668
669 /* Get the response header */
670 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
671 mfr_id = ntohl(rsp->mfr_id);
672
673 /* Check for manufacturer id and Find the handler */
674 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_oem_handlers); i++) {
675 if (ncsi_rsp_oem_handlers[i].mfr_id == mfr_id) {
676 if (ncsi_rsp_oem_handlers[i].handler)
677 nrh = &ncsi_rsp_oem_handlers[i];
678 else
679 nrh = NULL;
680
681 break;
682 }
683 }
684
685 if (!nrh) {
686 netdev_err(nr->ndp->ndev.dev, "Received unrecognized OEM packet with MFR-ID (0x%x)\n",
687 mfr_id);
688 return -ENOENT;
689 }
690
691 /* Process the packet */
692 return nrh->handler(nr);
693}
694
138635cc
GS		 695static int ncsi_rsp_handler_gvi(struct ncsi_request *nr)
696{
697 struct ncsi_rsp_gvi_pkt *rsp;
698 struct ncsi_dev_priv *ndp = nr->ndp;
699 struct ncsi_channel *nc;
700 struct ncsi_channel_version *ncv;
701 int i;
702
703 /* Find the channel */
704 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp);
705 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
706 NULL, &nc);
707 if (!nc)
708 return -ENODEV;
709
710 /* Update to channel's version info */
711 ncv = &nc->version;
712 ncv->version = ntohl(rsp->ncsi_version);
713 ncv->alpha2 = rsp->alpha2;
714 memcpy(ncv->fw_name, rsp->fw_name, 12);
715 ncv->fw_version = ntohl(rsp->fw_version);
716 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++)
717 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]);
718 ncv->mf_id = ntohl(rsp->mf_id);
719
720 return 0;
721}
722
723static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
724{
725 struct ncsi_rsp_gc_pkt *rsp;
726 struct ncsi_dev_priv *ndp = nr->ndp;
727 struct ncsi_channel *nc;
062b3e1b 728 size_t size;
138635cc
GS		 729
730 /* Find the channel */
731 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp);
732 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
733 NULL, &nc);
734 if (!nc)
735 return -ENODEV;
736
737 /* Update channel's capabilities */
738 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) &
739 NCSI_CAP_GENERIC_MASK;
740 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) &
741 NCSI_CAP_BC_MASK;
742 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) &
743 NCSI_CAP_MC_MASK;
744 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap);
745 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) &
746 NCSI_CAP_AEN_MASK;
747 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode &
748 NCSI_CAP_VLAN_MASK;
749
062b3e1b 750 size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN;
b0949618 751 nc->mac_filter.addrs = kzalloc(size, GFP_ATOMIC);
062b3e1b
SMJ		 752 if (!nc->mac_filter.addrs)
753 return -ENOMEM;
754 nc->mac_filter.n_uc = rsp->uc_cnt;
755 nc->mac_filter.n_mc = rsp->mc_cnt;
756 nc->mac_filter.n_mixed = rsp->mixed_cnt;
757
758 nc->vlan_filter.vids = kcalloc(rsp->vlan_cnt,
759 sizeof(*nc->vlan_filter.vids),
b0949618 760 GFP_ATOMIC);
062b3e1b
SMJ		 761 if (!nc->vlan_filter.vids)
762 return -ENOMEM;
763 /* Set VLAN filters active so they are cleared in the first
764 * configuration state
765 */
766 nc->vlan_filter.bitmap = U64_MAX;
767 nc->vlan_filter.n_vids = rsp->vlan_cnt;
138635cc
GS		 768
769 return 0;
770}
771
772static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
773{
062b3e1b
SMJ		 774 struct ncsi_channel_vlan_filter *ncvf;
775 struct ncsi_channel_mac_filter *ncmf;
138635cc 776 struct ncsi_dev_priv *ndp = nr->ndp;
062b3e1b 777 struct ncsi_rsp_gp_pkt *rsp;
138635cc 778 struct ncsi_channel *nc;
062b3e1b 779 unsigned short enable;
138635cc 780 unsigned char *pdata;
062b3e1b
SMJ		 781 unsigned long flags;
782 void *bitmap;
783 int i;
138635cc
GS		 784
785 /* Find the channel */
786 rsp = (struct ncsi_rsp_gp_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 /* Modes with explicit enabled indications */
793 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */
794 nc->modes[NCSI_MODE_BC].enable = 1;
795 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode);
796 }
797 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */
798 nc->modes[NCSI_MODE_ENABLE].enable = 1;
799 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */
800 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1;
801 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */
802 nc->modes[NCSI_MODE_MC].enable = 1;
803
804 /* Modes without explicit enabled indications */
805 nc->modes[NCSI_MODE_LINK].enable = 1;
806 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode);
807 nc->modes[NCSI_MODE_VLAN].enable = 1;
808 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode;
809 nc->modes[NCSI_MODE_FC].enable = 1;
810 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode;
811 nc->modes[NCSI_MODE_AEN].enable = 1;
812 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode);
813
814 /* MAC addresses filter table */
815 pdata = (unsigned char *)rsp + 48;
816 enable = rsp->mac_enable;
062b3e1b
SMJ		 817 ncmf = &nc->mac_filter;
818 spin_lock_irqsave(&nc->lock, flags);
819 bitmap = &ncmf->bitmap;
138635cc 820 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) {
138635cc 821 if (!(enable & (0x1 << i)))
062b3e1b
SMJ		 822 clear_bit(i, bitmap);
823 else
824 set_bit(i, bitmap);
138635cc 825
062b3e1b 826 memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN);
138635cc 827 }
062b3e1b 828 spin_unlock_irqrestore(&nc->lock, flags);
138635cc
GS		 829
830 /* VLAN filter table */
831 enable = ntohs(rsp->vlan_enable);
062b3e1b
SMJ		 832 ncvf = &nc->vlan_filter;
833 bitmap = &ncvf->bitmap;
834 spin_lock_irqsave(&nc->lock, flags);
138635cc
GS		 835 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) {
836 if (!(enable & (0x1 << i)))
062b3e1b
SMJ		 837 clear_bit(i, bitmap);
838 else
839 set_bit(i, bitmap);
138635cc 840
062b3e1b 841 ncvf->vids[i] = ntohs(*(__be16 *)pdata);
138635cc 842 }
062b3e1b 843 spin_unlock_irqrestore(&nc->lock, flags);
138635cc
GS		 844
845 return 0;
846}
847
848static int ncsi_rsp_handler_gcps(struct ncsi_request *nr)
849{
850 struct ncsi_rsp_gcps_pkt *rsp;
851 struct ncsi_dev_priv *ndp = nr->ndp;
852 struct ncsi_channel *nc;
853 struct ncsi_channel_stats *ncs;
854
855 /* Find the channel */
856 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp);
857 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
858 NULL, &nc);
859 if (!nc)
860 return -ENODEV;
861
862 /* Update HNC's statistics */
863 ncs = &nc->stats;
864 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi);
865 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo);
866 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes);
867 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes);
868 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts);
869 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts);
870 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts);
871 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts);
872 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts);
873 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts);
874 ncs->hnc_fcs_err = ntohl(rsp->fcs_err);
875 ncs->hnc_align_err = ntohl(rsp->align_err);
876 ncs->hnc_false_carrier = ntohl(rsp->false_carrier);
877 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts);
878 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts);
879 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon);
880 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff);
881 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon);
882 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff);
883 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision);
884 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision);
885 ncs->hnc_l_collision = ntohl(rsp->l_collision);
886 ncs->hnc_e_collision = ntohl(rsp->e_collision);
887 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames);
888 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames);
889 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames);
890 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames);
891 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames);
892 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames);
893 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames);
894 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames);
895 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames);
896 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames);
897 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames);
898 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames);
899 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames);
900 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames);
901 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames);
902 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes);
903 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts);
904 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts);
905
906 return 0;
907}
908
909static int ncsi_rsp_handler_gns(struct ncsi_request *nr)
910{
911 struct ncsi_rsp_gns_pkt *rsp;
912 struct ncsi_dev_priv *ndp = nr->ndp;
913 struct ncsi_channel *nc;
914 struct ncsi_channel_stats *ncs;
915
916 /* Find the channel */
917 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp);
918 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
919 NULL, &nc);
920 if (!nc)
921 return -ENODEV;
922
923 /* Update HNC's statistics */
924 ncs = &nc->stats;
925 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds);
926 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds);
927 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs);
928 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs);
929 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts);
930 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts);
931 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts);
932
933 return 0;
934}
935
936static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr)
937{
938 struct ncsi_rsp_gnpts_pkt *rsp;
939 struct ncsi_dev_priv *ndp = nr->ndp;
940 struct ncsi_channel *nc;
941 struct ncsi_channel_stats *ncs;
942
943 /* Find the channel */
944 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp);
945 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
946 NULL, &nc);
947 if (!nc)
948 return -ENODEV;
949
950 /* Update HNC's statistics */
951 ncs = &nc->stats;
952 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts);
953 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped);
954 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err);
955 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err);
956 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts);
957 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped);
958 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err);
959 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err);
960 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err);
961
962 return 0;
963}
964
965static int ncsi_rsp_handler_gps(struct ncsi_request *nr)
966{
967 struct ncsi_rsp_gps_pkt *rsp;
968 struct ncsi_dev_priv *ndp = nr->ndp;
969 struct ncsi_package *np;
970
971 /* Find the package */
972 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp);
973 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
974 &np, NULL);
975 if (!np)
976 return -ENODEV;
977
978 return 0;
979}
980
981static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr)
982{
983 struct ncsi_rsp_gpuuid_pkt *rsp;
984 struct ncsi_dev_priv *ndp = nr->ndp;
985 struct ncsi_package *np;
986
987 /* Find the package */
988 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp);
989 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
990 &np, NULL);
991 if (!np)
992 return -ENODEV;
993
994 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid));
995
996 return 0;
997}
998
9771b8cc
JLD		 999static int ncsi_rsp_handler_netlink(struct ncsi_request *nr)
1000{
1001 struct ncsi_dev_priv *ndp = nr->ndp;
1002 struct ncsi_rsp_pkt *rsp;
1003 struct ncsi_package *np;
1004 struct ncsi_channel *nc;
1005 int ret;
1006
1007 /* Find the package */
1008 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
1009 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
1010 &np, &nc);
1011 if (!np)
1012 return -ENODEV;
1013
1014 ret = ncsi_send_netlink_rsp(nr, np, nc);
1015
1016 return ret;
1017}
1018
138635cc
GS		 1019static struct ncsi_rsp_handler {
1020 unsigned char type;
1021 int payload;
1022 int (*handler)(struct ncsi_request *nr);
1023} ncsi_rsp_handlers[] = {
1024 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis },
1025 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp },
1026 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp },
1027 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec },
1028 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc },
1029 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc },
1030 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt },
1031 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt },
1032 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae },
1033 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl },
1034 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
1035 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf },
1036 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev },
1037 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv },
1038 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma },
1039 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf },
1040 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf },
1041 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf },
1042 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf },
1043 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc },
0a90e251 1044 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi },
138635cc
GS		 1045 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
1046 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp },
1047 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps },
1048 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns },
1049 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts },
1050 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps },
fb4ee675 1051 { NCSI_PKT_RSP_OEM, -1, ncsi_rsp_handler_oem },
138635cc
GS		 1052 { NCSI_PKT_RSP_PLDM, 0, NULL },
1053 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid }
1054};
1055
1056int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
1057 struct packet_type *pt, struct net_device *orig_dev)
1058{
1059 struct ncsi_rsp_handler *nrh = NULL;
1060 struct ncsi_dev *nd;
1061 struct ncsi_dev_priv *ndp;
1062 struct ncsi_request *nr;
1063 struct ncsi_pkt_hdr *hdr;
1064 unsigned long flags;
1065 int payload, i, ret;
1066
1067 /* Find the NCSI device */
1068 nd = ncsi_find_dev(dev);
1069 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
1070 if (!ndp)
1071 return -ENODEV;
1072
7a82ecf4 1073 /* Check if it is AEN packet */
138635cc 1074 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
7a82ecf4
GS		 1075 if (hdr->type == NCSI_PKT_AEN)
1076 return ncsi_aen_handler(ndp, skb);
1077
1078 /* Find the handler */
138635cc
GS		 1079 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) {
1080 if (ncsi_rsp_handlers[i].type == hdr->type) {
1081 if (ncsi_rsp_handlers[i].handler)
1082 nrh = &ncsi_rsp_handlers[i];
1083 else
1084 nrh = NULL;
1085
1086 break;
1087 }
1088 }
1089
1090 if (!nrh) {
1091 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n",
1092 hdr->type);
1093 return -ENOENT;
1094 }
1095
1096 /* Associate with the request */
1097 spin_lock_irqsave(&ndp->lock, flags);
1098 nr = &ndp->requests[hdr->id];
1099 if (!nr->used) {
1100 spin_unlock_irqrestore(&ndp->lock, flags);
1101 return -ENODEV;
1102 }
1103
1104 nr->rsp = skb;
1105 if (!nr->enabled) {
1106 spin_unlock_irqrestore(&ndp->lock, flags);
1107 ret = -ENOENT;
1108 goto out;
1109 }
1110
1111 /* Validate the packet */
1112 spin_unlock_irqrestore(&ndp->lock, flags);
1113 payload = nrh->payload;
1114 if (payload < 0)
1115 payload = ntohs(hdr->length);
1116 ret = ncsi_validate_rsp_pkt(nr, payload);
9ef8690b
SMJ		 1117 if (ret) {
1118 netdev_warn(ndp->ndev.dev,
1119 "NCSI: 'bad' packet ignored for type 0x%x\n",
1120 hdr->type);
9771b8cc
JLD		 1121
1122 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) {
1123 if (ret == -EPERM)
1124 goto out_netlink;
1125 else
1126 ncsi_send_netlink_err(ndp->ndev.dev,
1127 nr->snd_seq,
1128 nr->snd_portid,
1129 &nr->nlhdr,
1130 ret);
1131 }
138635cc 1132 goto out;
9ef8690b 1133 }
138635cc
GS		 1134
1135 /* Process the packet */
1136 ret = nrh->handler(nr);
9ef8690b
SMJ		 1137 if (ret)
1138 netdev_err(ndp->ndev.dev,
1139 "NCSI: Handler for packet type 0x%x returned %d\n",
1140 hdr->type, ret);
9771b8cc
JLD		 1141
1142out_netlink:
1143 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) {
1144 ret = ncsi_rsp_handler_netlink(nr);
1145 if (ret) {
1146 netdev_err(ndp->ndev.dev,
1147 "NCSI: Netlink handler for packet type 0x%x returned %d\n",
1148 hdr->type, ret);
1149 }
1150 }
1151
138635cc
GS		 1152out:
1153 ncsi_free_request(nr);
1154 return ret;
1155}
Linux 6.x block layer and io_uring tree(s)