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(skb: 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(data: (unsigned char *)h, |
64 | len: 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(skb: nr->rsp); |
85 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, np: &np, nc: &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(skb: nr->rsp); |
108 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
109 | np: &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(skb: nr->rsp); |
133 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
134 | np: &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(lock: &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(skb: nr->rsp); |
157 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
158 | NULL, nc: &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, payload: 4); |
179 | if (ret) |
180 | return ret; |
181 | |
182 | /* Find the package and channel */ |
183 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
184 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
185 | NULL, nc: &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(skb: nr->rsp); |
206 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
207 | NULL, nc: &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(lock: &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(skb: nr->rsp); |
228 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
229 | NULL, nc: &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(skb: nr->rsp); |
250 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
251 | NULL, nc: &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(skb: nr->rsp); |
273 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
274 | NULL, nc: &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(skb: 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(skb: nr->rsp); |
302 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
303 | NULL, nc: &nc); |
304 | if (!nc) |
305 | return -ENODEV; |
306 | |
307 | cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(skb: 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(skb: nr->rsp); |
325 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
326 | NULL, nc: &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(lock: &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(skb: nr->rsp); |
358 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
359 | NULL, nc: &nc); |
360 | if (!nc) |
361 | return -ENODEV; |
362 | |
363 | cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(skb: 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(nr: cmd->index - 1, addr: bitmap)) |
373 | ncf->vids[cmd->index - 1] = 0; |
374 | } else { |
375 | set_bit(nr: cmd->index - 1, addr: bitmap); |
376 | ncf->vids[cmd->index - 1] = ntohs(cmd->vlan); |
377 | } |
378 | spin_unlock_irqrestore(lock: &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(skb: nr->rsp); |
393 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
394 | NULL, nc: &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(skb: nr->cmd); |
405 | ncm->enable = 1; |
406 | ncm->data[0] = ntohl((__force __be32)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(skb: nr->rsp); |
420 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
421 | NULL, nc: &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(skb: nr->rsp); |
450 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
451 | NULL, nc: &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(skb: 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(nr: cmd->index - 1, addr: bitmap); |
471 | memcpy(&ncf->addrs[index], cmd->mac, ETH_ALEN); |
472 | } else { |
473 | clear_bit(nr: cmd->index - 1, addr: bitmap); |
474 | eth_zero_addr(addr: &ncf->addrs[index]); |
475 | } |
476 | spin_unlock_irqrestore(lock: &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(skb: nr->rsp); |
491 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, NULL, nc: &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(skb: 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(skb: nr->rsp); |
516 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
517 | NULL, nc: &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(skb: nr->rsp); |
543 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
544 | NULL, nc: &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(skb: 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(skb: nr->rsp); |
569 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
570 | NULL, nc: &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(skb: nr->rsp); |
596 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
597 | NULL, nc: &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(skb: nr->cmd); |
608 | ncm->enable = 1; |
609 | ncm->data[0] = cmd->mode; |
610 | |
611 | return 0; |
612 | } |
613 | |
614 | /* Response handler for Get Mac Address command */ |
615 | static int ncsi_rsp_handler_oem_gma(struct ncsi_request *nr, int mfr_id) |
616 | { |
617 | struct ncsi_dev_priv *ndp = nr->ndp; |
618 | struct net_device *ndev = ndp->ndev.dev; |
619 | struct ncsi_rsp_oem_pkt *rsp; |
620 | struct sockaddr saddr; |
621 | u32 mac_addr_off = 0; |
622 | int ret = 0; |
623 | |
624 | /* Get the response header */ |
625 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
626 | |
627 | saddr.sa_family = ndev->type; |
628 | ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
629 | if (mfr_id == NCSI_OEM_MFR_BCM_ID) |
630 | mac_addr_off = BCM_MAC_ADDR_OFFSET; |
631 | else if (mfr_id == NCSI_OEM_MFR_MLX_ID) |
632 | mac_addr_off = MLX_MAC_ADDR_OFFSET; |
633 | else if (mfr_id == NCSI_OEM_MFR_INTEL_ID) |
634 | mac_addr_off = INTEL_MAC_ADDR_OFFSET; |
635 | |
636 | memcpy(saddr.sa_data, &rsp->data[mac_addr_off], ETH_ALEN); |
637 | if (mfr_id == NCSI_OEM_MFR_BCM_ID || mfr_id == NCSI_OEM_MFR_INTEL_ID) |
638 | eth_addr_inc(addr: (u8 *)saddr.sa_data); |
639 | if (!is_valid_ether_addr(addr: (const u8 *)saddr.sa_data)) |
640 | return -ENXIO; |
641 | |
642 | /* Set the flag for GMA command which should only be called once */ |
643 | ndp->gma_flag = 1; |
644 | |
645 | rtnl_lock(); |
646 | ret = dev_set_mac_address(dev: ndev, sa: &saddr, NULL); |
647 | rtnl_unlock(); |
648 | if (ret < 0) |
649 | netdev_warn(dev: ndev, format: "NCSI: 'Writing mac address to device failed\n" ); |
650 | |
651 | return ret; |
652 | } |
653 | |
654 | /* Response handler for Mellanox card */ |
655 | static int ncsi_rsp_handler_oem_mlx(struct ncsi_request *nr) |
656 | { |
657 | struct ncsi_rsp_oem_mlx_pkt *mlx; |
658 | struct ncsi_rsp_oem_pkt *rsp; |
659 | |
660 | /* Get the response header */ |
661 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
662 | mlx = (struct ncsi_rsp_oem_mlx_pkt *)(rsp->data); |
663 | |
664 | if (mlx->cmd == NCSI_OEM_MLX_CMD_GMA && |
665 | mlx->param == NCSI_OEM_MLX_CMD_GMA_PARAM) |
666 | return ncsi_rsp_handler_oem_gma(nr, NCSI_OEM_MFR_MLX_ID); |
667 | return 0; |
668 | } |
669 | |
670 | /* Response handler for Broadcom card */ |
671 | static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr) |
672 | { |
673 | struct ncsi_rsp_oem_bcm_pkt *bcm; |
674 | struct ncsi_rsp_oem_pkt *rsp; |
675 | |
676 | /* Get the response header */ |
677 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
678 | bcm = (struct ncsi_rsp_oem_bcm_pkt *)(rsp->data); |
679 | |
680 | if (bcm->type == NCSI_OEM_BCM_CMD_GMA) |
681 | return ncsi_rsp_handler_oem_gma(nr, NCSI_OEM_MFR_BCM_ID); |
682 | return 0; |
683 | } |
684 | |
685 | /* Response handler for Intel card */ |
686 | static int ncsi_rsp_handler_oem_intel(struct ncsi_request *nr) |
687 | { |
688 | struct ncsi_rsp_oem_intel_pkt *intel; |
689 | struct ncsi_rsp_oem_pkt *rsp; |
690 | |
691 | /* Get the response header */ |
692 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
693 | intel = (struct ncsi_rsp_oem_intel_pkt *)(rsp->data); |
694 | |
695 | if (intel->cmd == NCSI_OEM_INTEL_CMD_GMA) |
696 | return ncsi_rsp_handler_oem_gma(nr, NCSI_OEM_MFR_INTEL_ID); |
697 | |
698 | return 0; |
699 | } |
700 | |
701 | static struct ncsi_rsp_oem_handler { |
702 | unsigned int mfr_id; |
703 | int (*handler)(struct ncsi_request *nr); |
704 | } ncsi_rsp_oem_handlers[] = { |
705 | { NCSI_OEM_MFR_MLX_ID, ncsi_rsp_handler_oem_mlx }, |
706 | { NCSI_OEM_MFR_BCM_ID, ncsi_rsp_handler_oem_bcm }, |
707 | { NCSI_OEM_MFR_INTEL_ID, ncsi_rsp_handler_oem_intel } |
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(skb: 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(dev: nr->ndp->ndev.dev, format: "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(skb: nr->rsp); |
753 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
754 | NULL, nc: &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(skb: nr->rsp); |
780 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
781 | NULL, nc: &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(n: rsp->vlan_cnt, |
807 | size: 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(skb: nr->rsp); |
835 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
836 | NULL, nc: &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(nr: i, addr: bitmap); |
871 | else |
872 | set_bit(nr: i, addr: bitmap); |
873 | |
874 | memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN); |
875 | } |
876 | spin_unlock_irqrestore(lock: &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(nr: i, addr: bitmap); |
886 | else |
887 | set_bit(nr: i, addr: bitmap); |
888 | |
889 | ncvf->vids[i] = ntohs(*(__be16 *)pdata); |
890 | } |
891 | spin_unlock_irqrestore(lock: &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(skb: nr->rsp); |
905 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
906 | NULL, nc: &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(skb: nr->rsp); |
966 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
967 | NULL, nc: &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(skb: nr->rsp); |
993 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
994 | NULL, nc: &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(skb: nr->rsp); |
1021 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
1022 | np: &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(skb: nr->rsp); |
1037 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
1038 | np: &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(skb: nr->rsp); |
1062 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
1063 | np: &np, nc: &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(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(dev: nd->dev, format: "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(lock: &ndp->lock, flags); |
1156 | return -ENODEV; |
1157 | } |
1158 | |
1159 | nr->rsp = skb; |
1160 | if (!nr->enabled) { |
1161 | spin_unlock_irqrestore(lock: &ndp->lock, flags); |
1162 | ret = -ENOENT; |
1163 | goto out; |
1164 | } |
1165 | |
1166 | /* Validate the packet */ |
1167 | spin_unlock_irqrestore(lock: &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(dev: ndp->ndev.dev, |
1174 | format: "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(dev: ndp->ndev.dev, |
1182 | snd_seq: nr->snd_seq, |
1183 | snd_portid: nr->snd_portid, |
1184 | nlhdr: &nr->nlhdr, |
1185 | err: ret); |
1186 | } |
1187 | goto out; |
1188 | } |
1189 | |
1190 | /* Process the packet */ |
1191 | ret = nrh->handler(nr); |
1192 | if (ret) |
1193 | netdev_err(dev: ndp->ndev.dev, |
1194 | format: "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(dev: ndp->ndev.dev, |
1202 | format: "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 | } |
1211 | |