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Merge tag 'io_uring-5.11-2021-01-16' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / net / ncsi / ncsi-rsp.c
blob888ccc2d4e34b11b746bd6ec805496ea4dd9a220
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright Gavin Shan, IBM Corporation 2016.
4 */
5
6 #include <linux/module.h>
7 #include <linux/kernel.h>
8 #include <linux/init.h>
9 #include <linux/netdevice.h>
10 #include <linux/etherdevice.h>
11 #include <linux/skbuff.h>
12
13 #include <net/ncsi.h>
14 #include <net/net_namespace.h>
15 #include <net/sock.h>
16 #include <net/genetlink.h>
17
18 #include "internal.h"
19 #include "ncsi-pkt.h"
20 #include "ncsi-netlink.h"
21
22 static 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);
34
35 if (h->common.revision != NCSI_PKT_REVISION) {
36 netdev_dbg(nr->ndp->ndev.dev,
37 "NCSI: unsupported header revision\n");
38 return -EINVAL;
39 }
40 if (ntohs(h->common.length) != payload) {
41 netdev_dbg(nr->ndp->ndev.dev,
42 "NCSI: payload length mismatched\n");
43 return -EINVAL;
44 }
45
46 /* Check on code and reason */
47 if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED ||
48 ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) {
49 netdev_dbg(nr->ndp->ndev.dev,
50 "NCSI: non zero response/reason code %04xh, %04xh\n",
51 ntohs(h->code), ntohs(h->reason));
52 return -EPERM;
53 }
54
55 /* Validate checksum, which might be zeroes if the
56 * sender doesn't support checksum according to NCSI
57 * specification.
58 */
59 pchecksum = (__be32 *)((void *)(h + 1) + ALIGN(payload, 4) - 4);
60 if (ntohl(*pchecksum) == 0)
61 return 0;
62
63 checksum = ncsi_calculate_checksum((unsigned char *)h,
64 sizeof(*h) + payload - 4);
65
66 if (*pchecksum != htonl(checksum)) {
67 netdev_dbg(nr->ndp->ndev.dev,
68 "NCSI: checksum mismatched; recd: %08x calc: %08x\n",
69 *pchecksum, htonl(checksum));
70 return -EINVAL;
71 }
72
73 return 0;
74 }
75
76 static 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) {
87 if (ndp->flags & NCSI_DEV_PROBED)
88 return -ENXIO;
89
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
97 static 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) {
111 if (ndp->flags & NCSI_DEV_PROBED)
112 return -ENXIO;
113
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
123 static 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
148 static 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)
164 return 0;
165
166 ncm->enable = 1;
167 return 0;
168 }
169
170 static 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)
191 return 0;
192
193 ncm->enable = 0;
194 return 0;
195 }
196
197 static 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
219 static 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)
235 return 0;
236
237 ncm->enable = 1;
238 return 0;
239 }
240
241 static 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)
257 return 0;
258
259 ncm->enable = 0;
260 return 0;
261 }
262
263 static 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)
281 return 0;
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
292 static 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
315 static 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;
321 unsigned long flags;
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
335 if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN)
336 return 0;
337
338 /* Reset the channel monitor if it has been enabled */
339 spin_lock_irqsave(&nc->lock, flags);
340 nc->monitor.state = NCSI_CHANNEL_MONITOR_START;
341 spin_unlock_irqrestore(&nc->lock, flags);
342
343 return 0;
344 }
345
346 static 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;
352 struct ncsi_channel_vlan_filter *ncf;
353 unsigned long flags;
354 void *bitmap;
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);
364 ncf = &nc->vlan_filter;
365 if (cmd->index == 0 || cmd->index > ncf->n_vids)
366 return -ERANGE;
367
368 /* Add or remove the VLAN filter. Remember HW indexes from 1 */
369 spin_lock_irqsave(&nc->lock, flags);
370 bitmap = &ncf->bitmap;
371 if (!(cmd->enable & 0x1)) {
372 if (test_and_clear_bit(cmd->index - 1, bitmap))
373 ncf->vids[cmd->index - 1] = 0;
374 } else {
375 set_bit(cmd->index - 1, bitmap);
376 ncf->vids[cmd->index - 1] = ntohs(cmd->vlan);
377 }
378 spin_unlock_irqrestore(&nc->lock, flags);
379
380 return 0;
381 }
382
383 static 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)
401 return 0;
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
411 static 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)
428 return 0;
429
430 /* Update to VLAN mode */
431 ncm->enable = 0;
432 return 0;
433 }
434
435 static 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;
441 struct ncsi_channel_mac_filter *ncf;
442 unsigned long flags;
443 void *bitmap;
444 bool enabled;
445 int index;
446
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);
459 enabled = cmd->at_e & 0x1;
460 ncf = &nc->mac_filter;
461 bitmap = &ncf->bitmap;
462
463 if (cmd->index == 0 ||
464 cmd->index > ncf->n_uc + ncf->n_mc + ncf->n_mixed)
465 return -ERANGE;
466
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);
472 } else {
473 clear_bit(cmd->index - 1, bitmap);
474 eth_zero_addr(&ncf->addrs[index]);
475 }
476 spin_unlock_irqrestore(&nc->lock, flags);
477
478 return 0;
479 }
480
481 static 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)
498 return 0;
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
508 static 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)
524 return 0;
525
526 /* Update to broadcast filter mode */
527 ncm->enable = 0;
528 ncm->data[0] = 0;
529
530 return 0;
531 }
532
533 static 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)
551 return 0;
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
561 static 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)
577 return 0;
578
579 /* Update to multicast filter mode */
580 ncm->enable = 0;
581 ncm->data[0] = 0;
582
583 return 0;
584 }
585
586 static 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)
604 return 0;
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
614 /* Response handler for Mellanox command Get Mac Address */
615 static 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 /* Set the flag for GMA command which should only be called once */
631 ndp->gma_flag = 1;
632
633 ret = ops->ndo_set_mac_address(ndev, &saddr);
634 if (ret < 0)
635 netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n");
636
637 return ret;
638 }
639
640 /* Response handler for Mellanox card */
641 static int ncsi_rsp_handler_oem_mlx(struct ncsi_request *nr)
642 {
643 struct ncsi_rsp_oem_mlx_pkt *mlx;
644 struct ncsi_rsp_oem_pkt *rsp;
645
646 /* Get the response header */
647 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
648 mlx = (struct ncsi_rsp_oem_mlx_pkt *)(rsp->data);
649
650 if (mlx->cmd == NCSI_OEM_MLX_CMD_GMA &&
651 mlx->param == NCSI_OEM_MLX_CMD_GMA_PARAM)
652 return ncsi_rsp_handler_oem_mlx_gma(nr);
653 return 0;
654 }
655
656 /* Response handler for Broadcom command Get Mac Address */
657 static int ncsi_rsp_handler_oem_bcm_gma(struct ncsi_request *nr)
658 {
659 struct ncsi_dev_priv *ndp = nr->ndp;
660 struct net_device *ndev = ndp->ndev.dev;
661 const struct net_device_ops *ops = ndev->netdev_ops;
662 struct ncsi_rsp_oem_pkt *rsp;
663 struct sockaddr saddr;
664 int ret = 0;
665
666 /* Get the response header */
667 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
668
669 saddr.sa_family = ndev->type;
670 ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
671 memcpy(saddr.sa_data, &rsp->data[BCM_MAC_ADDR_OFFSET], ETH_ALEN);
672 /* Increase mac address by 1 for BMC's address */
673 eth_addr_inc((u8 *)saddr.sa_data);
674 if (!is_valid_ether_addr((const u8 *)saddr.sa_data))
675 return -ENXIO;
676
677 /* Set the flag for GMA command which should only be called once */
678 ndp->gma_flag = 1;
679
680 ret = ops->ndo_set_mac_address(ndev, &saddr);
681 if (ret < 0)
682 netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n");
683
684 return ret;
685 }
686
687 /* Response handler for Broadcom card */
688 static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr)
689 {
690 struct ncsi_rsp_oem_bcm_pkt *bcm;
691 struct ncsi_rsp_oem_pkt *rsp;
692
693 /* Get the response header */
694 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
695 bcm = (struct ncsi_rsp_oem_bcm_pkt *)(rsp->data);
696
697 if (bcm->type == NCSI_OEM_BCM_CMD_GMA)
698 return ncsi_rsp_handler_oem_bcm_gma(nr);
699 return 0;
700 }
701
702 static struct ncsi_rsp_oem_handler {
703 unsigned int mfr_id;
704 int (*handler)(struct ncsi_request *nr);
705 } ncsi_rsp_oem_handlers[] = {
706 { NCSI_OEM_MFR_MLX_ID, ncsi_rsp_handler_oem_mlx },
707 { NCSI_OEM_MFR_BCM_ID, ncsi_rsp_handler_oem_bcm }
708 };
709
710 /* Response handler for OEM command */
711 static int ncsi_rsp_handler_oem(struct ncsi_request *nr)
712 {
713 struct ncsi_rsp_oem_handler *nrh = NULL;
714 struct ncsi_rsp_oem_pkt *rsp;
715 unsigned int mfr_id, i;
716
717 /* Get the response header */
718 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
719 mfr_id = ntohl(rsp->mfr_id);
720
721 /* Check for manufacturer id and Find the handler */
722 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_oem_handlers); i++) {
723 if (ncsi_rsp_oem_handlers[i].mfr_id == mfr_id) {
724 if (ncsi_rsp_oem_handlers[i].handler)
725 nrh = &ncsi_rsp_oem_handlers[i];
726 else
727 nrh = NULL;
728
729 break;
730 }
731 }
732
733 if (!nrh) {
734 netdev_err(nr->ndp->ndev.dev, "Received unrecognized OEM packet with MFR-ID (0x%x)\n",
735 mfr_id);
736 return -ENOENT;
737 }
738
739 /* Process the packet */
740 return nrh->handler(nr);
741 }
742
743 static int ncsi_rsp_handler_gvi(struct ncsi_request *nr)
744 {
745 struct ncsi_rsp_gvi_pkt *rsp;
746 struct ncsi_dev_priv *ndp = nr->ndp;
747 struct ncsi_channel *nc;
748 struct ncsi_channel_version *ncv;
749 int i;
750
751 /* Find the channel */
752 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp);
753 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
754 NULL, &nc);
755 if (!nc)
756 return -ENODEV;
757
758 /* Update to channel's version info */
759 ncv = &nc->version;
760 ncv->version = ntohl(rsp->ncsi_version);
761 ncv->alpha2 = rsp->alpha2;
762 memcpy(ncv->fw_name, rsp->fw_name, 12);
763 ncv->fw_version = ntohl(rsp->fw_version);
764 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++)
765 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]);
766 ncv->mf_id = ntohl(rsp->mf_id);
767
768 return 0;
769 }
770
771 static int ncsi_rsp_handler_gc(struct ncsi_request *nr)
772 {
773 struct ncsi_rsp_gc_pkt *rsp;
774 struct ncsi_dev_priv *ndp = nr->ndp;
775 struct ncsi_channel *nc;
776 size_t size;
777
778 /* Find the channel */
779 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp);
780 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
781 NULL, &nc);
782 if (!nc)
783 return -ENODEV;
784
785 /* Update channel's capabilities */
786 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) &
787 NCSI_CAP_GENERIC_MASK;
788 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) &
789 NCSI_CAP_BC_MASK;
790 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) &
791 NCSI_CAP_MC_MASK;
792 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap);
793 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) &
794 NCSI_CAP_AEN_MASK;
795 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode &
796 NCSI_CAP_VLAN_MASK;
797
798 size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN;
799 nc->mac_filter.addrs = kzalloc(size, GFP_ATOMIC);
800 if (!nc->mac_filter.addrs)
801 return -ENOMEM;
802 nc->mac_filter.n_uc = rsp->uc_cnt;
803 nc->mac_filter.n_mc = rsp->mc_cnt;
804 nc->mac_filter.n_mixed = rsp->mixed_cnt;
805
806 nc->vlan_filter.vids = kcalloc(rsp->vlan_cnt,
807 sizeof(*nc->vlan_filter.vids),
808 GFP_ATOMIC);
809 if (!nc->vlan_filter.vids)
810 return -ENOMEM;
811 /* Set VLAN filters active so they are cleared in the first
812 * configuration state
813 */
814 nc->vlan_filter.bitmap = U64_MAX;
815 nc->vlan_filter.n_vids = rsp->vlan_cnt;
816
817 return 0;
818 }
819
820 static int ncsi_rsp_handler_gp(struct ncsi_request *nr)
821 {
822 struct ncsi_channel_vlan_filter *ncvf;
823 struct ncsi_channel_mac_filter *ncmf;
824 struct ncsi_dev_priv *ndp = nr->ndp;
825 struct ncsi_rsp_gp_pkt *rsp;
826 struct ncsi_channel *nc;
827 unsigned short enable;
828 unsigned char *pdata;
829 unsigned long flags;
830 void *bitmap;
831 int i;
832
833 /* Find the channel */
834 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp);
835 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
836 NULL, &nc);
837 if (!nc)
838 return -ENODEV;
839
840 /* Modes with explicit enabled indications */
841 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */
842 nc->modes[NCSI_MODE_BC].enable = 1;
843 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode);
844 }
845 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */
846 nc->modes[NCSI_MODE_ENABLE].enable = 1;
847 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */
848 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1;
849 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */
850 nc->modes[NCSI_MODE_MC].enable = 1;
851
852 /* Modes without explicit enabled indications */
853 nc->modes[NCSI_MODE_LINK].enable = 1;
854 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode);
855 nc->modes[NCSI_MODE_VLAN].enable = 1;
856 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode;
857 nc->modes[NCSI_MODE_FC].enable = 1;
858 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode;
859 nc->modes[NCSI_MODE_AEN].enable = 1;
860 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode);
861
862 /* MAC addresses filter table */
863 pdata = (unsigned char *)rsp + 48;
864 enable = rsp->mac_enable;
865 ncmf = &nc->mac_filter;
866 spin_lock_irqsave(&nc->lock, flags);
867 bitmap = &ncmf->bitmap;
868 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) {
869 if (!(enable & (0x1 << i)))
870 clear_bit(i, bitmap);
871 else
872 set_bit(i, bitmap);
873
874 memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN);
875 }
876 spin_unlock_irqrestore(&nc->lock, flags);
877
878 /* VLAN filter table */
879 enable = ntohs(rsp->vlan_enable);
880 ncvf = &nc->vlan_filter;
881 bitmap = &ncvf->bitmap;
882 spin_lock_irqsave(&nc->lock, flags);
883 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) {
884 if (!(enable & (0x1 << i)))
885 clear_bit(i, bitmap);
886 else
887 set_bit(i, bitmap);
888
889 ncvf->vids[i] = ntohs(*(__be16 *)pdata);
890 }
891 spin_unlock_irqrestore(&nc->lock, flags);
892
893 return 0;
894 }
895
896 static int ncsi_rsp_handler_gcps(struct ncsi_request *nr)
897 {
898 struct ncsi_rsp_gcps_pkt *rsp;
899 struct ncsi_dev_priv *ndp = nr->ndp;
900 struct ncsi_channel *nc;
901 struct ncsi_channel_stats *ncs;
902
903 /* Find the channel */
904 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp);
905 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
906 NULL, &nc);
907 if (!nc)
908 return -ENODEV;
909
910 /* Update HNC's statistics */
911 ncs = &nc->stats;
912 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi);
913 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo);
914 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes);
915 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes);
916 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts);
917 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts);
918 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts);
919 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts);
920 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts);
921 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts);
922 ncs->hnc_fcs_err = ntohl(rsp->fcs_err);
923 ncs->hnc_align_err = ntohl(rsp->align_err);
924 ncs->hnc_false_carrier = ntohl(rsp->false_carrier);
925 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts);
926 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts);
927 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon);
928 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff);
929 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon);
930 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff);
931 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision);
932 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision);
933 ncs->hnc_l_collision = ntohl(rsp->l_collision);
934 ncs->hnc_e_collision = ntohl(rsp->e_collision);
935 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames);
936 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames);
937 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames);
938 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames);
939 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames);
940 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames);
941 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames);
942 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames);
943 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames);
944 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames);
945 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames);
946 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames);
947 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames);
948 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames);
949 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames);
950 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes);
951 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts);
952 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts);
953
954 return 0;
955 }
956
957 static int ncsi_rsp_handler_gns(struct ncsi_request *nr)
958 {
959 struct ncsi_rsp_gns_pkt *rsp;
960 struct ncsi_dev_priv *ndp = nr->ndp;
961 struct ncsi_channel *nc;
962 struct ncsi_channel_stats *ncs;
963
964 /* Find the channel */
965 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp);
966 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
967 NULL, &nc);
968 if (!nc)
969 return -ENODEV;
970
971 /* Update HNC's statistics */
972 ncs = &nc->stats;
973 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds);
974 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds);
975 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs);
976 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs);
977 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts);
978 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts);
979 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts);
980
981 return 0;
982 }
983
984 static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr)
985 {
986 struct ncsi_rsp_gnpts_pkt *rsp;
987 struct ncsi_dev_priv *ndp = nr->ndp;
988 struct ncsi_channel *nc;
989 struct ncsi_channel_stats *ncs;
990
991 /* Find the channel */
992 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp);
993 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
994 NULL, &nc);
995 if (!nc)
996 return -ENODEV;
997
998 /* Update HNC's statistics */
999 ncs = &nc->stats;
1000 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts);
1001 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped);
1002 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err);
1003 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err);
1004 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts);
1005 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped);
1006 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err);
1007 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err);
1008 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err);
1009
1010 return 0;
1011 }
1012
1013 static int ncsi_rsp_handler_gps(struct ncsi_request *nr)
1014 {
1015 struct ncsi_rsp_gps_pkt *rsp;
1016 struct ncsi_dev_priv *ndp = nr->ndp;
1017 struct ncsi_package *np;
1018
1019 /* Find the package */
1020 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp);
1021 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
1022 &np, NULL);
1023 if (!np)
1024 return -ENODEV;
1025
1026 return 0;
1027 }
1028
1029 static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr)
1030 {
1031 struct ncsi_rsp_gpuuid_pkt *rsp;
1032 struct ncsi_dev_priv *ndp = nr->ndp;
1033 struct ncsi_package *np;
1034
1035 /* Find the package */
1036 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp);
1037 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
1038 &np, NULL);
1039 if (!np)
1040 return -ENODEV;
1041
1042 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid));
1043
1044 return 0;
1045 }
1046
1047 static int ncsi_rsp_handler_pldm(struct ncsi_request *nr)
1048 {
1049 return 0;
1050 }
1051
1052 static int ncsi_rsp_handler_netlink(struct ncsi_request *nr)
1053 {
1054 struct ncsi_dev_priv *ndp = nr->ndp;
1055 struct ncsi_rsp_pkt *rsp;
1056 struct ncsi_package *np;
1057 struct ncsi_channel *nc;
1058 int ret;
1059
1060 /* Find the package */
1061 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp);
1062 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel,
1063 &np, &nc);
1064 if (!np)
1065 return -ENODEV;
1066
1067 ret = ncsi_send_netlink_rsp(nr, np, nc);
1068
1069 return ret;
1070 }
1071
1072 static struct ncsi_rsp_handler {
1073 unsigned char type;
1074 int payload;
1075 int (*handler)(struct ncsi_request *nr);
1076 } ncsi_rsp_handlers[] = {
1077 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis },
1078 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp },
1079 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp },
1080 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec },
1081 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc },
1082 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc },
1083 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt },
1084 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt },
1085 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae },
1086 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl },
1087 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
1088 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf },
1089 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev },
1090 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv },
1091 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma },
1092 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf },
1093 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf },
1094 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf },
1095 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf },
1096 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc },
1097 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi },
1098 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
1099 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp },
1100 { NCSI_PKT_RSP_GCPS, 204, ncsi_rsp_handler_gcps },
1101 { NCSI_PKT_RSP_GNS, 32, ncsi_rsp_handler_gns },
1102 { NCSI_PKT_RSP_GNPTS, 48, ncsi_rsp_handler_gnpts },
1103 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps },
1104 { NCSI_PKT_RSP_OEM, -1, ncsi_rsp_handler_oem },
1105 { NCSI_PKT_RSP_PLDM, -1, ncsi_rsp_handler_pldm },
1106 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid },
1107 { NCSI_PKT_RSP_QPNPR, -1, ncsi_rsp_handler_pldm },
1108 { NCSI_PKT_RSP_SNPR, -1, ncsi_rsp_handler_pldm }
1109 };
1110
1111 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
1112 struct packet_type *pt, struct net_device *orig_dev)
1113 {
1114 struct ncsi_rsp_handler *nrh = NULL;
1115 struct ncsi_dev *nd;
1116 struct ncsi_dev_priv *ndp;
1117 struct ncsi_request *nr;
1118 struct ncsi_pkt_hdr *hdr;
1119 unsigned long flags;
1120 int payload, i, ret;
1121
1122 /* Find the NCSI device */
1123 nd = ncsi_find_dev(orig_dev);
1124 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
1125 if (!ndp)
1126 return -ENODEV;
1127
1128 /* Check if it is AEN packet */
1129 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb);
1130 if (hdr->type == NCSI_PKT_AEN)
1131 return ncsi_aen_handler(ndp, skb);
1132
1133 /* Find the handler */
1134 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) {
1135 if (ncsi_rsp_handlers[i].type == hdr->type) {
1136 if (ncsi_rsp_handlers[i].handler)
1137 nrh = &ncsi_rsp_handlers[i];
1138 else
1139 nrh = NULL;
1140
1141 break;
1142 }
1143 }
1144
1145 if (!nrh) {
1146 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n",
1147 hdr->type);
1148 return -ENOENT;
1149 }
1150
1151 /* Associate with the request */
1152 spin_lock_irqsave(&ndp->lock, flags);
1153 nr = &ndp->requests[hdr->id];
1154 if (!nr->used) {
1155 spin_unlock_irqrestore(&ndp->lock, flags);
1156 return -ENODEV;
1157 }
1158
1159 nr->rsp = skb;
1160 if (!nr->enabled) {
1161 spin_unlock_irqrestore(&ndp->lock, flags);
1162 ret = -ENOENT;
1163 goto out;
1164 }
1165
1166 /* Validate the packet */
1167 spin_unlock_irqrestore(&ndp->lock, flags);
1168 payload = nrh->payload;
1169 if (payload < 0)
1170 payload = ntohs(hdr->length);
1171 ret = ncsi_validate_rsp_pkt(nr, payload);
1172 if (ret) {
1173 netdev_warn(ndp->ndev.dev,
1174 "NCSI: 'bad' packet ignored for type 0x%x\n",
1175 hdr->type);
1176
1177 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) {
1178 if (ret == -EPERM)
1179 goto out_netlink;
1180 else
1181 ncsi_send_netlink_err(ndp->ndev.dev,
1182 nr->snd_seq,
1183 nr->snd_portid,
1184 &nr->nlhdr,
1185 ret);
1186 }
1187 goto out;
1188 }
1189
1190 /* Process the packet */
1191 ret = nrh->handler(nr);
1192 if (ret)
1193 netdev_err(ndp->ndev.dev,
1194 "NCSI: Handler for packet type 0x%x returned %d\n",
1195 hdr->type, ret);
1196
1197 out_netlink:
1198 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) {
1199 ret = ncsi_rsp_handler_netlink(nr);
1200 if (ret) {
1201 netdev_err(ndp->ndev.dev,
1202 "NCSI: Netlink handler for packet type 0x%x returned %d\n",
1203 hdr->type, ret);
1204 }
1205 }
1206
1207 out:
1208 ncsi_free_request(nr);
1209 return ret;
1210 }
Linux with added FPC-III support