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 | /* Nibbles within [0xA, 0xF] add zero "0" to the returned value. |
23 | * Optional fields (encoded as 0xFF) will default to zero. |
24 | */ |
25 | static u8 decode_bcd_u8(u8 x) |
26 | { |
27 | int lo = x & 0xF; |
28 | int hi = x >> 4; |
29 | |
30 | lo = lo < 0xA ? lo : 0; |
31 | hi = hi < 0xA ? hi : 0; |
32 | return lo + hi * 10; |
33 | } |
34 | |
35 | static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, |
36 | unsigned short payload) |
37 | { |
38 | struct ncsi_rsp_pkt_hdr *h; |
39 | u32 checksum; |
40 | __be32 *pchecksum; |
41 | |
42 | /* Check NCSI packet header. We don't need validate |
43 | * the packet type, which should have been checked |
44 | * before calling this function. |
45 | */ |
46 | h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(skb: nr->rsp); |
47 | |
48 | if (h->common.revision != NCSI_PKT_REVISION) { |
49 | netdev_dbg(nr->ndp->ndev.dev, |
50 | "NCSI: unsupported header revision\n" ); |
51 | return -EINVAL; |
52 | } |
53 | if (ntohs(h->common.length) != payload) { |
54 | netdev_dbg(nr->ndp->ndev.dev, |
55 | "NCSI: payload length mismatched\n" ); |
56 | return -EINVAL; |
57 | } |
58 | |
59 | /* Check on code and reason */ |
60 | if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED || |
61 | ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) { |
62 | netdev_dbg(nr->ndp->ndev.dev, |
63 | "NCSI: non zero response/reason code %04xh, %04xh\n" , |
64 | ntohs(h->code), ntohs(h->reason)); |
65 | return -EPERM; |
66 | } |
67 | |
68 | /* Validate checksum, which might be zeroes if the |
69 | * sender doesn't support checksum according to NCSI |
70 | * specification. |
71 | */ |
72 | pchecksum = (__be32 *)((void *)(h + 1) + ALIGN(payload, 4) - 4); |
73 | if (ntohl(*pchecksum) == 0) |
74 | return 0; |
75 | |
76 | checksum = ncsi_calculate_checksum(data: (unsigned char *)h, |
77 | len: sizeof(*h) + payload - 4); |
78 | |
79 | if (*pchecksum != htonl(checksum)) { |
80 | netdev_dbg(nr->ndp->ndev.dev, |
81 | "NCSI: checksum mismatched; recd: %08x calc: %08x\n" , |
82 | *pchecksum, htonl(checksum)); |
83 | return -EINVAL; |
84 | } |
85 | |
86 | return 0; |
87 | } |
88 | |
89 | static int ncsi_rsp_handler_cis(struct ncsi_request *nr) |
90 | { |
91 | struct ncsi_rsp_pkt *rsp; |
92 | struct ncsi_dev_priv *ndp = nr->ndp; |
93 | struct ncsi_package *np; |
94 | struct ncsi_channel *nc; |
95 | unsigned char id; |
96 | |
97 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
98 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, np: &np, nc: &nc); |
99 | if (!nc) { |
100 | if (ndp->flags & NCSI_DEV_PROBED) |
101 | return -ENXIO; |
102 | |
103 | id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel); |
104 | nc = ncsi_add_channel(np, id); |
105 | } |
106 | |
107 | return nc ? 0 : -ENODEV; |
108 | } |
109 | |
110 | static int ncsi_rsp_handler_sp(struct ncsi_request *nr) |
111 | { |
112 | struct ncsi_rsp_pkt *rsp; |
113 | struct ncsi_dev_priv *ndp = nr->ndp; |
114 | struct ncsi_package *np; |
115 | unsigned char id; |
116 | |
117 | /* Add the package if it's not existing. Otherwise, |
118 | * to change the state of its child channels. |
119 | */ |
120 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
121 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
122 | np: &np, NULL); |
123 | if (!np) { |
124 | if (ndp->flags & NCSI_DEV_PROBED) |
125 | return -ENXIO; |
126 | |
127 | id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel); |
128 | np = ncsi_add_package(ndp, id); |
129 | if (!np) |
130 | return -ENODEV; |
131 | } |
132 | |
133 | return 0; |
134 | } |
135 | |
136 | static int ncsi_rsp_handler_dp(struct ncsi_request *nr) |
137 | { |
138 | struct ncsi_rsp_pkt *rsp; |
139 | struct ncsi_dev_priv *ndp = nr->ndp; |
140 | struct ncsi_package *np; |
141 | struct ncsi_channel *nc; |
142 | unsigned long flags; |
143 | |
144 | /* Find the package */ |
145 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
146 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
147 | np: &np, NULL); |
148 | if (!np) |
149 | return -ENODEV; |
150 | |
151 | /* Change state of all channels attached to the package */ |
152 | NCSI_FOR_EACH_CHANNEL(np, nc) { |
153 | spin_lock_irqsave(&nc->lock, flags); |
154 | nc->state = NCSI_CHANNEL_INACTIVE; |
155 | spin_unlock_irqrestore(lock: &nc->lock, flags); |
156 | } |
157 | |
158 | return 0; |
159 | } |
160 | |
161 | static int ncsi_rsp_handler_ec(struct ncsi_request *nr) |
162 | { |
163 | struct ncsi_rsp_pkt *rsp; |
164 | struct ncsi_dev_priv *ndp = nr->ndp; |
165 | struct ncsi_channel *nc; |
166 | struct ncsi_channel_mode *ncm; |
167 | |
168 | /* Find the package and channel */ |
169 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
170 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
171 | NULL, nc: &nc); |
172 | if (!nc) |
173 | return -ENODEV; |
174 | |
175 | ncm = &nc->modes[NCSI_MODE_ENABLE]; |
176 | if (ncm->enable) |
177 | return 0; |
178 | |
179 | ncm->enable = 1; |
180 | return 0; |
181 | } |
182 | |
183 | static int ncsi_rsp_handler_dc(struct ncsi_request *nr) |
184 | { |
185 | struct ncsi_rsp_pkt *rsp; |
186 | struct ncsi_dev_priv *ndp = nr->ndp; |
187 | struct ncsi_channel *nc; |
188 | struct ncsi_channel_mode *ncm; |
189 | int ret; |
190 | |
191 | ret = ncsi_validate_rsp_pkt(nr, payload: 4); |
192 | if (ret) |
193 | return ret; |
194 | |
195 | /* Find the package and channel */ |
196 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
197 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
198 | NULL, nc: &nc); |
199 | if (!nc) |
200 | return -ENODEV; |
201 | |
202 | ncm = &nc->modes[NCSI_MODE_ENABLE]; |
203 | if (!ncm->enable) |
204 | return 0; |
205 | |
206 | ncm->enable = 0; |
207 | return 0; |
208 | } |
209 | |
210 | static int ncsi_rsp_handler_rc(struct ncsi_request *nr) |
211 | { |
212 | struct ncsi_rsp_pkt *rsp; |
213 | struct ncsi_dev_priv *ndp = nr->ndp; |
214 | struct ncsi_channel *nc; |
215 | unsigned long flags; |
216 | |
217 | /* Find the package and channel */ |
218 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
219 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
220 | NULL, nc: &nc); |
221 | if (!nc) |
222 | return -ENODEV; |
223 | |
224 | /* Update state for the specified channel */ |
225 | spin_lock_irqsave(&nc->lock, flags); |
226 | nc->state = NCSI_CHANNEL_INACTIVE; |
227 | spin_unlock_irqrestore(lock: &nc->lock, flags); |
228 | |
229 | return 0; |
230 | } |
231 | |
232 | static int ncsi_rsp_handler_ecnt(struct ncsi_request *nr) |
233 | { |
234 | struct ncsi_rsp_pkt *rsp; |
235 | struct ncsi_dev_priv *ndp = nr->ndp; |
236 | struct ncsi_channel *nc; |
237 | struct ncsi_channel_mode *ncm; |
238 | |
239 | /* Find the package and channel */ |
240 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
241 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
242 | NULL, nc: &nc); |
243 | if (!nc) |
244 | return -ENODEV; |
245 | |
246 | ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; |
247 | if (ncm->enable) |
248 | return 0; |
249 | |
250 | ncm->enable = 1; |
251 | return 0; |
252 | } |
253 | |
254 | static int ncsi_rsp_handler_dcnt(struct ncsi_request *nr) |
255 | { |
256 | struct ncsi_rsp_pkt *rsp; |
257 | struct ncsi_dev_priv *ndp = nr->ndp; |
258 | struct ncsi_channel *nc; |
259 | struct ncsi_channel_mode *ncm; |
260 | |
261 | /* Find the package and channel */ |
262 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
263 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
264 | NULL, nc: &nc); |
265 | if (!nc) |
266 | return -ENODEV; |
267 | |
268 | ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; |
269 | if (!ncm->enable) |
270 | return 0; |
271 | |
272 | ncm->enable = 0; |
273 | return 0; |
274 | } |
275 | |
276 | static int ncsi_rsp_handler_ae(struct ncsi_request *nr) |
277 | { |
278 | struct ncsi_cmd_ae_pkt *cmd; |
279 | struct ncsi_rsp_pkt *rsp; |
280 | struct ncsi_dev_priv *ndp = nr->ndp; |
281 | struct ncsi_channel *nc; |
282 | struct ncsi_channel_mode *ncm; |
283 | |
284 | /* Find the package and channel */ |
285 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
286 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
287 | NULL, nc: &nc); |
288 | if (!nc) |
289 | return -ENODEV; |
290 | |
291 | /* Check if the AEN has been enabled */ |
292 | ncm = &nc->modes[NCSI_MODE_AEN]; |
293 | if (ncm->enable) |
294 | return 0; |
295 | |
296 | /* Update to AEN configuration */ |
297 | cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(skb: nr->cmd); |
298 | ncm->enable = 1; |
299 | ncm->data[0] = cmd->mc_id; |
300 | ncm->data[1] = ntohl(cmd->mode); |
301 | |
302 | return 0; |
303 | } |
304 | |
305 | static int ncsi_rsp_handler_sl(struct ncsi_request *nr) |
306 | { |
307 | struct ncsi_cmd_sl_pkt *cmd; |
308 | struct ncsi_rsp_pkt *rsp; |
309 | struct ncsi_dev_priv *ndp = nr->ndp; |
310 | struct ncsi_channel *nc; |
311 | struct ncsi_channel_mode *ncm; |
312 | |
313 | /* Find the package and channel */ |
314 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
315 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
316 | NULL, nc: &nc); |
317 | if (!nc) |
318 | return -ENODEV; |
319 | |
320 | cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(skb: nr->cmd); |
321 | ncm = &nc->modes[NCSI_MODE_LINK]; |
322 | ncm->data[0] = ntohl(cmd->mode); |
323 | ncm->data[1] = ntohl(cmd->oem_mode); |
324 | |
325 | return 0; |
326 | } |
327 | |
328 | static int ncsi_rsp_handler_gls(struct ncsi_request *nr) |
329 | { |
330 | struct ncsi_rsp_gls_pkt *rsp; |
331 | struct ncsi_dev_priv *ndp = nr->ndp; |
332 | struct ncsi_channel *nc; |
333 | struct ncsi_channel_mode *ncm; |
334 | unsigned long flags; |
335 | |
336 | /* Find the package and channel */ |
337 | rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(skb: nr->rsp); |
338 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
339 | NULL, nc: &nc); |
340 | if (!nc) |
341 | return -ENODEV; |
342 | |
343 | ncm = &nc->modes[NCSI_MODE_LINK]; |
344 | ncm->data[2] = ntohl(rsp->status); |
345 | ncm->data[3] = ntohl(rsp->other); |
346 | ncm->data[4] = ntohl(rsp->oem_status); |
347 | |
348 | if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN) |
349 | return 0; |
350 | |
351 | /* Reset the channel monitor if it has been enabled */ |
352 | spin_lock_irqsave(&nc->lock, flags); |
353 | nc->monitor.state = NCSI_CHANNEL_MONITOR_START; |
354 | spin_unlock_irqrestore(lock: &nc->lock, flags); |
355 | |
356 | return 0; |
357 | } |
358 | |
359 | static int ncsi_rsp_handler_svf(struct ncsi_request *nr) |
360 | { |
361 | struct ncsi_cmd_svf_pkt *cmd; |
362 | struct ncsi_rsp_pkt *rsp; |
363 | struct ncsi_dev_priv *ndp = nr->ndp; |
364 | struct ncsi_channel *nc; |
365 | struct ncsi_channel_vlan_filter *ncf; |
366 | unsigned long flags; |
367 | void *bitmap; |
368 | |
369 | /* Find the package and channel */ |
370 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
371 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
372 | NULL, nc: &nc); |
373 | if (!nc) |
374 | return -ENODEV; |
375 | |
376 | cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(skb: nr->cmd); |
377 | ncf = &nc->vlan_filter; |
378 | if (cmd->index == 0 || cmd->index > ncf->n_vids) |
379 | return -ERANGE; |
380 | |
381 | /* Add or remove the VLAN filter. Remember HW indexes from 1 */ |
382 | spin_lock_irqsave(&nc->lock, flags); |
383 | bitmap = &ncf->bitmap; |
384 | if (!(cmd->enable & 0x1)) { |
385 | if (test_and_clear_bit(nr: cmd->index - 1, addr: bitmap)) |
386 | ncf->vids[cmd->index - 1] = 0; |
387 | } else { |
388 | set_bit(nr: cmd->index - 1, addr: bitmap); |
389 | ncf->vids[cmd->index - 1] = ntohs(cmd->vlan); |
390 | } |
391 | spin_unlock_irqrestore(lock: &nc->lock, flags); |
392 | |
393 | return 0; |
394 | } |
395 | |
396 | static int ncsi_rsp_handler_ev(struct ncsi_request *nr) |
397 | { |
398 | struct ncsi_cmd_ev_pkt *cmd; |
399 | struct ncsi_rsp_pkt *rsp; |
400 | struct ncsi_dev_priv *ndp = nr->ndp; |
401 | struct ncsi_channel *nc; |
402 | struct ncsi_channel_mode *ncm; |
403 | |
404 | /* Find the package and channel */ |
405 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
406 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
407 | NULL, nc: &nc); |
408 | if (!nc) |
409 | return -ENODEV; |
410 | |
411 | /* Check if VLAN mode has been enabled */ |
412 | ncm = &nc->modes[NCSI_MODE_VLAN]; |
413 | if (ncm->enable) |
414 | return 0; |
415 | |
416 | /* Update to VLAN mode */ |
417 | cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(skb: nr->cmd); |
418 | ncm->enable = 1; |
419 | ncm->data[0] = ntohl((__force __be32)cmd->mode); |
420 | |
421 | return 0; |
422 | } |
423 | |
424 | static int ncsi_rsp_handler_dv(struct ncsi_request *nr) |
425 | { |
426 | struct ncsi_rsp_pkt *rsp; |
427 | struct ncsi_dev_priv *ndp = nr->ndp; |
428 | struct ncsi_channel *nc; |
429 | struct ncsi_channel_mode *ncm; |
430 | |
431 | /* Find the package and channel */ |
432 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
433 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
434 | NULL, nc: &nc); |
435 | if (!nc) |
436 | return -ENODEV; |
437 | |
438 | /* Check if VLAN mode has been enabled */ |
439 | ncm = &nc->modes[NCSI_MODE_VLAN]; |
440 | if (!ncm->enable) |
441 | return 0; |
442 | |
443 | /* Update to VLAN mode */ |
444 | ncm->enable = 0; |
445 | return 0; |
446 | } |
447 | |
448 | static int ncsi_rsp_handler_sma(struct ncsi_request *nr) |
449 | { |
450 | struct ncsi_cmd_sma_pkt *cmd; |
451 | struct ncsi_rsp_pkt *rsp; |
452 | struct ncsi_dev_priv *ndp = nr->ndp; |
453 | struct ncsi_channel *nc; |
454 | struct ncsi_channel_mac_filter *ncf; |
455 | unsigned long flags; |
456 | void *bitmap; |
457 | bool enabled; |
458 | int index; |
459 | |
460 | |
461 | /* Find the package and channel */ |
462 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
463 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
464 | NULL, nc: &nc); |
465 | if (!nc) |
466 | return -ENODEV; |
467 | |
468 | /* According to NCSI spec 1.01, the mixed filter table |
469 | * isn't supported yet. |
470 | */ |
471 | cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(skb: nr->cmd); |
472 | enabled = cmd->at_e & 0x1; |
473 | ncf = &nc->mac_filter; |
474 | bitmap = &ncf->bitmap; |
475 | |
476 | if (cmd->index == 0 || |
477 | cmd->index > ncf->n_uc + ncf->n_mc + ncf->n_mixed) |
478 | return -ERANGE; |
479 | |
480 | index = (cmd->index - 1) * ETH_ALEN; |
481 | spin_lock_irqsave(&nc->lock, flags); |
482 | if (enabled) { |
483 | set_bit(nr: cmd->index - 1, addr: bitmap); |
484 | memcpy(&ncf->addrs[index], cmd->mac, ETH_ALEN); |
485 | } else { |
486 | clear_bit(nr: cmd->index - 1, addr: bitmap); |
487 | eth_zero_addr(addr: &ncf->addrs[index]); |
488 | } |
489 | spin_unlock_irqrestore(lock: &nc->lock, flags); |
490 | |
491 | return 0; |
492 | } |
493 | |
494 | static int ncsi_rsp_handler_ebf(struct ncsi_request *nr) |
495 | { |
496 | struct ncsi_cmd_ebf_pkt *cmd; |
497 | struct ncsi_rsp_pkt *rsp; |
498 | struct ncsi_dev_priv *ndp = nr->ndp; |
499 | struct ncsi_channel *nc; |
500 | struct ncsi_channel_mode *ncm; |
501 | |
502 | /* Find the package and channel */ |
503 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
504 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, NULL, nc: &nc); |
505 | if (!nc) |
506 | return -ENODEV; |
507 | |
508 | /* Check if broadcast filter has been enabled */ |
509 | ncm = &nc->modes[NCSI_MODE_BC]; |
510 | if (ncm->enable) |
511 | return 0; |
512 | |
513 | /* Update to broadcast filter mode */ |
514 | cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(skb: nr->cmd); |
515 | ncm->enable = 1; |
516 | ncm->data[0] = ntohl(cmd->mode); |
517 | |
518 | return 0; |
519 | } |
520 | |
521 | static int ncsi_rsp_handler_dbf(struct ncsi_request *nr) |
522 | { |
523 | struct ncsi_rsp_pkt *rsp; |
524 | struct ncsi_dev_priv *ndp = nr->ndp; |
525 | struct ncsi_channel *nc; |
526 | struct ncsi_channel_mode *ncm; |
527 | |
528 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
529 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
530 | NULL, nc: &nc); |
531 | if (!nc) |
532 | return -ENODEV; |
533 | |
534 | /* Check if broadcast filter isn't enabled */ |
535 | ncm = &nc->modes[NCSI_MODE_BC]; |
536 | if (!ncm->enable) |
537 | return 0; |
538 | |
539 | /* Update to broadcast filter mode */ |
540 | ncm->enable = 0; |
541 | ncm->data[0] = 0; |
542 | |
543 | return 0; |
544 | } |
545 | |
546 | static int ncsi_rsp_handler_egmf(struct ncsi_request *nr) |
547 | { |
548 | struct ncsi_cmd_egmf_pkt *cmd; |
549 | struct ncsi_rsp_pkt *rsp; |
550 | struct ncsi_dev_priv *ndp = nr->ndp; |
551 | struct ncsi_channel *nc; |
552 | struct ncsi_channel_mode *ncm; |
553 | |
554 | /* Find the channel */ |
555 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
556 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
557 | NULL, nc: &nc); |
558 | if (!nc) |
559 | return -ENODEV; |
560 | |
561 | /* Check if multicast filter has been enabled */ |
562 | ncm = &nc->modes[NCSI_MODE_MC]; |
563 | if (ncm->enable) |
564 | return 0; |
565 | |
566 | /* Update to multicast filter mode */ |
567 | cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(skb: nr->cmd); |
568 | ncm->enable = 1; |
569 | ncm->data[0] = ntohl(cmd->mode); |
570 | |
571 | return 0; |
572 | } |
573 | |
574 | static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr) |
575 | { |
576 | struct ncsi_rsp_pkt *rsp; |
577 | struct ncsi_dev_priv *ndp = nr->ndp; |
578 | struct ncsi_channel *nc; |
579 | struct ncsi_channel_mode *ncm; |
580 | |
581 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
582 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
583 | NULL, nc: &nc); |
584 | if (!nc) |
585 | return -ENODEV; |
586 | |
587 | /* Check if multicast filter has been enabled */ |
588 | ncm = &nc->modes[NCSI_MODE_MC]; |
589 | if (!ncm->enable) |
590 | return 0; |
591 | |
592 | /* Update to multicast filter mode */ |
593 | ncm->enable = 0; |
594 | ncm->data[0] = 0; |
595 | |
596 | return 0; |
597 | } |
598 | |
599 | static int ncsi_rsp_handler_snfc(struct ncsi_request *nr) |
600 | { |
601 | struct ncsi_cmd_snfc_pkt *cmd; |
602 | struct ncsi_rsp_pkt *rsp; |
603 | struct ncsi_dev_priv *ndp = nr->ndp; |
604 | struct ncsi_channel *nc; |
605 | struct ncsi_channel_mode *ncm; |
606 | |
607 | /* Find the channel */ |
608 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
609 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
610 | NULL, nc: &nc); |
611 | if (!nc) |
612 | return -ENODEV; |
613 | |
614 | /* Check if flow control has been enabled */ |
615 | ncm = &nc->modes[NCSI_MODE_FC]; |
616 | if (ncm->enable) |
617 | return 0; |
618 | |
619 | /* Update to flow control mode */ |
620 | cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(skb: nr->cmd); |
621 | ncm->enable = 1; |
622 | ncm->data[0] = cmd->mode; |
623 | |
624 | return 0; |
625 | } |
626 | |
627 | /* Response handler for Get Mac Address command */ |
628 | static int ncsi_rsp_handler_oem_gma(struct ncsi_request *nr, int mfr_id) |
629 | { |
630 | struct ncsi_dev_priv *ndp = nr->ndp; |
631 | struct net_device *ndev = ndp->ndev.dev; |
632 | struct ncsi_rsp_oem_pkt *rsp; |
633 | struct sockaddr saddr; |
634 | u32 mac_addr_off = 0; |
635 | int ret = 0; |
636 | |
637 | /* Get the response header */ |
638 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
639 | |
640 | saddr.sa_family = ndev->type; |
641 | ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
642 | if (mfr_id == NCSI_OEM_MFR_BCM_ID) |
643 | mac_addr_off = BCM_MAC_ADDR_OFFSET; |
644 | else if (mfr_id == NCSI_OEM_MFR_MLX_ID) |
645 | mac_addr_off = MLX_MAC_ADDR_OFFSET; |
646 | else if (mfr_id == NCSI_OEM_MFR_INTEL_ID) |
647 | mac_addr_off = INTEL_MAC_ADDR_OFFSET; |
648 | |
649 | memcpy(saddr.sa_data, &rsp->data[mac_addr_off], ETH_ALEN); |
650 | if (mfr_id == NCSI_OEM_MFR_BCM_ID || mfr_id == NCSI_OEM_MFR_INTEL_ID) |
651 | eth_addr_inc(addr: (u8 *)saddr.sa_data); |
652 | if (!is_valid_ether_addr(addr: (const u8 *)saddr.sa_data)) |
653 | return -ENXIO; |
654 | |
655 | /* Set the flag for GMA command which should only be called once */ |
656 | ndp->gma_flag = 1; |
657 | |
658 | rtnl_lock(); |
659 | ret = dev_set_mac_address(dev: ndev, sa: &saddr, NULL); |
660 | rtnl_unlock(); |
661 | if (ret < 0) |
662 | netdev_warn(dev: ndev, format: "NCSI: 'Writing mac address to device failed\n" ); |
663 | |
664 | return ret; |
665 | } |
666 | |
667 | /* Response handler for Mellanox card */ |
668 | static int ncsi_rsp_handler_oem_mlx(struct ncsi_request *nr) |
669 | { |
670 | struct ncsi_rsp_oem_mlx_pkt *mlx; |
671 | struct ncsi_rsp_oem_pkt *rsp; |
672 | |
673 | /* Get the response header */ |
674 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
675 | mlx = (struct ncsi_rsp_oem_mlx_pkt *)(rsp->data); |
676 | |
677 | if (mlx->cmd == NCSI_OEM_MLX_CMD_GMA && |
678 | mlx->param == NCSI_OEM_MLX_CMD_GMA_PARAM) |
679 | return ncsi_rsp_handler_oem_gma(nr, NCSI_OEM_MFR_MLX_ID); |
680 | return 0; |
681 | } |
682 | |
683 | /* Response handler for Broadcom card */ |
684 | static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr) |
685 | { |
686 | struct ncsi_rsp_oem_bcm_pkt *bcm; |
687 | struct ncsi_rsp_oem_pkt *rsp; |
688 | |
689 | /* Get the response header */ |
690 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
691 | bcm = (struct ncsi_rsp_oem_bcm_pkt *)(rsp->data); |
692 | |
693 | if (bcm->type == NCSI_OEM_BCM_CMD_GMA) |
694 | return ncsi_rsp_handler_oem_gma(nr, NCSI_OEM_MFR_BCM_ID); |
695 | return 0; |
696 | } |
697 | |
698 | /* Response handler for Intel card */ |
699 | static int ncsi_rsp_handler_oem_intel(struct ncsi_request *nr) |
700 | { |
701 | struct ncsi_rsp_oem_intel_pkt *intel; |
702 | struct ncsi_rsp_oem_pkt *rsp; |
703 | |
704 | /* Get the response header */ |
705 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
706 | intel = (struct ncsi_rsp_oem_intel_pkt *)(rsp->data); |
707 | |
708 | if (intel->cmd == NCSI_OEM_INTEL_CMD_GMA) |
709 | return ncsi_rsp_handler_oem_gma(nr, NCSI_OEM_MFR_INTEL_ID); |
710 | |
711 | return 0; |
712 | } |
713 | |
714 | static struct ncsi_rsp_oem_handler { |
715 | unsigned int mfr_id; |
716 | int (*handler)(struct ncsi_request *nr); |
717 | } ncsi_rsp_oem_handlers[] = { |
718 | { NCSI_OEM_MFR_MLX_ID, ncsi_rsp_handler_oem_mlx }, |
719 | { NCSI_OEM_MFR_BCM_ID, ncsi_rsp_handler_oem_bcm }, |
720 | { NCSI_OEM_MFR_INTEL_ID, ncsi_rsp_handler_oem_intel } |
721 | }; |
722 | |
723 | /* Response handler for OEM command */ |
724 | static int ncsi_rsp_handler_oem(struct ncsi_request *nr) |
725 | { |
726 | struct ncsi_rsp_oem_handler *nrh = NULL; |
727 | struct ncsi_rsp_oem_pkt *rsp; |
728 | unsigned int mfr_id, i; |
729 | |
730 | /* Get the response header */ |
731 | rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(skb: nr->rsp); |
732 | mfr_id = ntohl(rsp->mfr_id); |
733 | |
734 | /* Check for manufacturer id and Find the handler */ |
735 | for (i = 0; i < ARRAY_SIZE(ncsi_rsp_oem_handlers); i++) { |
736 | if (ncsi_rsp_oem_handlers[i].mfr_id == mfr_id) { |
737 | if (ncsi_rsp_oem_handlers[i].handler) |
738 | nrh = &ncsi_rsp_oem_handlers[i]; |
739 | else |
740 | nrh = NULL; |
741 | |
742 | break; |
743 | } |
744 | } |
745 | |
746 | if (!nrh) { |
747 | netdev_err(dev: nr->ndp->ndev.dev, format: "Received unrecognized OEM packet with MFR-ID (0x%x)\n" , |
748 | mfr_id); |
749 | return -ENOENT; |
750 | } |
751 | |
752 | /* Process the packet */ |
753 | return nrh->handler(nr); |
754 | } |
755 | |
756 | static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) |
757 | { |
758 | struct ncsi_rsp_gvi_pkt *rsp; |
759 | struct ncsi_dev_priv *ndp = nr->ndp; |
760 | struct ncsi_channel *nc; |
761 | struct ncsi_channel_version *ncv; |
762 | int i; |
763 | |
764 | /* Find the channel */ |
765 | rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(skb: nr->rsp); |
766 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
767 | NULL, nc: &nc); |
768 | if (!nc) |
769 | return -ENODEV; |
770 | |
771 | /* Update channel's version info |
772 | * |
773 | * Major, minor, and update fields are supposed to be |
774 | * unsigned integers encoded as packed BCD. |
775 | * |
776 | * Alpha1 and alpha2 are ISO/IEC 8859-1 characters. |
777 | */ |
778 | ncv = &nc->version; |
779 | ncv->major = decode_bcd_u8(x: rsp->major); |
780 | ncv->minor = decode_bcd_u8(x: rsp->minor); |
781 | ncv->update = decode_bcd_u8(x: rsp->update); |
782 | ncv->alpha1 = rsp->alpha1; |
783 | ncv->alpha2 = rsp->alpha2; |
784 | memcpy(ncv->fw_name, rsp->fw_name, 12); |
785 | ncv->fw_version = ntohl(rsp->fw_version); |
786 | for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) |
787 | ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]); |
788 | ncv->mf_id = ntohl(rsp->mf_id); |
789 | |
790 | return 0; |
791 | } |
792 | |
793 | static int ncsi_rsp_handler_gc(struct ncsi_request *nr) |
794 | { |
795 | struct ncsi_rsp_gc_pkt *rsp; |
796 | struct ncsi_dev_priv *ndp = nr->ndp; |
797 | struct ncsi_channel *nc; |
798 | size_t size; |
799 | |
800 | /* Find the channel */ |
801 | rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(skb: nr->rsp); |
802 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
803 | NULL, nc: &nc); |
804 | if (!nc) |
805 | return -ENODEV; |
806 | |
807 | /* Update channel's capabilities */ |
808 | nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) & |
809 | NCSI_CAP_GENERIC_MASK; |
810 | nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) & |
811 | NCSI_CAP_BC_MASK; |
812 | nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) & |
813 | NCSI_CAP_MC_MASK; |
814 | nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap); |
815 | nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) & |
816 | NCSI_CAP_AEN_MASK; |
817 | nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode & |
818 | NCSI_CAP_VLAN_MASK; |
819 | |
820 | size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN; |
821 | nc->mac_filter.addrs = kzalloc(size, GFP_ATOMIC); |
822 | if (!nc->mac_filter.addrs) |
823 | return -ENOMEM; |
824 | nc->mac_filter.n_uc = rsp->uc_cnt; |
825 | nc->mac_filter.n_mc = rsp->mc_cnt; |
826 | nc->mac_filter.n_mixed = rsp->mixed_cnt; |
827 | |
828 | nc->vlan_filter.vids = kcalloc(n: rsp->vlan_cnt, |
829 | size: sizeof(*nc->vlan_filter.vids), |
830 | GFP_ATOMIC); |
831 | if (!nc->vlan_filter.vids) |
832 | return -ENOMEM; |
833 | /* Set VLAN filters active so they are cleared in the first |
834 | * configuration state |
835 | */ |
836 | nc->vlan_filter.bitmap = U64_MAX; |
837 | nc->vlan_filter.n_vids = rsp->vlan_cnt; |
838 | |
839 | return 0; |
840 | } |
841 | |
842 | static int ncsi_rsp_handler_gp(struct ncsi_request *nr) |
843 | { |
844 | struct ncsi_channel_vlan_filter *ncvf; |
845 | struct ncsi_channel_mac_filter *ncmf; |
846 | struct ncsi_dev_priv *ndp = nr->ndp; |
847 | struct ncsi_rsp_gp_pkt *rsp; |
848 | struct ncsi_channel *nc; |
849 | unsigned short enable; |
850 | unsigned char *pdata; |
851 | unsigned long flags; |
852 | void *bitmap; |
853 | int i; |
854 | |
855 | /* Find the channel */ |
856 | rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(skb: nr->rsp); |
857 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
858 | NULL, nc: &nc); |
859 | if (!nc) |
860 | return -ENODEV; |
861 | |
862 | /* Modes with explicit enabled indications */ |
863 | if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */ |
864 | nc->modes[NCSI_MODE_BC].enable = 1; |
865 | nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode); |
866 | } |
867 | if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */ |
868 | nc->modes[NCSI_MODE_ENABLE].enable = 1; |
869 | if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */ |
870 | nc->modes[NCSI_MODE_TX_ENABLE].enable = 1; |
871 | if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */ |
872 | nc->modes[NCSI_MODE_MC].enable = 1; |
873 | |
874 | /* Modes without explicit enabled indications */ |
875 | nc->modes[NCSI_MODE_LINK].enable = 1; |
876 | nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode); |
877 | nc->modes[NCSI_MODE_VLAN].enable = 1; |
878 | nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode; |
879 | nc->modes[NCSI_MODE_FC].enable = 1; |
880 | nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode; |
881 | nc->modes[NCSI_MODE_AEN].enable = 1; |
882 | nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode); |
883 | |
884 | /* MAC addresses filter table */ |
885 | pdata = (unsigned char *)rsp + 48; |
886 | enable = rsp->mac_enable; |
887 | ncmf = &nc->mac_filter; |
888 | spin_lock_irqsave(&nc->lock, flags); |
889 | bitmap = &ncmf->bitmap; |
890 | for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) { |
891 | if (!(enable & (0x1 << i))) |
892 | clear_bit(nr: i, addr: bitmap); |
893 | else |
894 | set_bit(nr: i, addr: bitmap); |
895 | |
896 | memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN); |
897 | } |
898 | spin_unlock_irqrestore(lock: &nc->lock, flags); |
899 | |
900 | /* VLAN filter table */ |
901 | enable = ntohs(rsp->vlan_enable); |
902 | ncvf = &nc->vlan_filter; |
903 | bitmap = &ncvf->bitmap; |
904 | spin_lock_irqsave(&nc->lock, flags); |
905 | for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) { |
906 | if (!(enable & (0x1 << i))) |
907 | clear_bit(nr: i, addr: bitmap); |
908 | else |
909 | set_bit(nr: i, addr: bitmap); |
910 | |
911 | ncvf->vids[i] = ntohs(*(__be16 *)pdata); |
912 | } |
913 | spin_unlock_irqrestore(lock: &nc->lock, flags); |
914 | |
915 | return 0; |
916 | } |
917 | |
918 | static int ncsi_rsp_handler_gcps(struct ncsi_request *nr) |
919 | { |
920 | struct ncsi_rsp_gcps_pkt *rsp; |
921 | struct ncsi_dev_priv *ndp = nr->ndp; |
922 | struct ncsi_channel *nc; |
923 | struct ncsi_channel_stats *ncs; |
924 | |
925 | /* Find the channel */ |
926 | rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(skb: nr->rsp); |
927 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
928 | NULL, nc: &nc); |
929 | if (!nc) |
930 | return -ENODEV; |
931 | |
932 | /* Update HNC's statistics */ |
933 | ncs = &nc->stats; |
934 | ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi); |
935 | ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo); |
936 | ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes); |
937 | ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes); |
938 | ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts); |
939 | ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts); |
940 | ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts); |
941 | ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts); |
942 | ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts); |
943 | ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts); |
944 | ncs->hnc_fcs_err = ntohl(rsp->fcs_err); |
945 | ncs->hnc_align_err = ntohl(rsp->align_err); |
946 | ncs->hnc_false_carrier = ntohl(rsp->false_carrier); |
947 | ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts); |
948 | ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts); |
949 | ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon); |
950 | ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff); |
951 | ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon); |
952 | ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff); |
953 | ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision); |
954 | ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision); |
955 | ncs->hnc_l_collision = ntohl(rsp->l_collision); |
956 | ncs->hnc_e_collision = ntohl(rsp->e_collision); |
957 | ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames); |
958 | ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames); |
959 | ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames); |
960 | ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames); |
961 | ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames); |
962 | ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames); |
963 | ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames); |
964 | ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames); |
965 | ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames); |
966 | ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames); |
967 | ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames); |
968 | ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames); |
969 | ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames); |
970 | ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames); |
971 | ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames); |
972 | ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes); |
973 | ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts); |
974 | ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts); |
975 | |
976 | return 0; |
977 | } |
978 | |
979 | static int ncsi_rsp_handler_gns(struct ncsi_request *nr) |
980 | { |
981 | struct ncsi_rsp_gns_pkt *rsp; |
982 | struct ncsi_dev_priv *ndp = nr->ndp; |
983 | struct ncsi_channel *nc; |
984 | struct ncsi_channel_stats *ncs; |
985 | |
986 | /* Find the channel */ |
987 | rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(skb: nr->rsp); |
988 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
989 | NULL, nc: &nc); |
990 | if (!nc) |
991 | return -ENODEV; |
992 | |
993 | /* Update HNC's statistics */ |
994 | ncs = &nc->stats; |
995 | ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds); |
996 | ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds); |
997 | ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs); |
998 | ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs); |
999 | ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts); |
1000 | ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts); |
1001 | ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts); |
1002 | |
1003 | return 0; |
1004 | } |
1005 | |
1006 | static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr) |
1007 | { |
1008 | struct ncsi_rsp_gnpts_pkt *rsp; |
1009 | struct ncsi_dev_priv *ndp = nr->ndp; |
1010 | struct ncsi_channel *nc; |
1011 | struct ncsi_channel_stats *ncs; |
1012 | |
1013 | /* Find the channel */ |
1014 | rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(skb: nr->rsp); |
1015 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
1016 | NULL, nc: &nc); |
1017 | if (!nc) |
1018 | return -ENODEV; |
1019 | |
1020 | /* Update HNC's statistics */ |
1021 | ncs = &nc->stats; |
1022 | ncs->pt_tx_pkts = ntohl(rsp->tx_pkts); |
1023 | ncs->pt_tx_dropped = ntohl(rsp->tx_dropped); |
1024 | ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err); |
1025 | ncs->pt_tx_us_err = ntohl(rsp->tx_us_err); |
1026 | ncs->pt_rx_pkts = ntohl(rsp->rx_pkts); |
1027 | ncs->pt_rx_dropped = ntohl(rsp->rx_dropped); |
1028 | ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err); |
1029 | ncs->pt_rx_us_err = ntohl(rsp->rx_us_err); |
1030 | ncs->pt_rx_os_err = ntohl(rsp->rx_os_err); |
1031 | |
1032 | return 0; |
1033 | } |
1034 | |
1035 | static int ncsi_rsp_handler_gps(struct ncsi_request *nr) |
1036 | { |
1037 | struct ncsi_rsp_gps_pkt *rsp; |
1038 | struct ncsi_dev_priv *ndp = nr->ndp; |
1039 | struct ncsi_package *np; |
1040 | |
1041 | /* Find the package */ |
1042 | rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(skb: nr->rsp); |
1043 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
1044 | np: &np, NULL); |
1045 | if (!np) |
1046 | return -ENODEV; |
1047 | |
1048 | return 0; |
1049 | } |
1050 | |
1051 | static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr) |
1052 | { |
1053 | struct ncsi_rsp_gpuuid_pkt *rsp; |
1054 | struct ncsi_dev_priv *ndp = nr->ndp; |
1055 | struct ncsi_package *np; |
1056 | |
1057 | /* Find the package */ |
1058 | rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(skb: nr->rsp); |
1059 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
1060 | np: &np, NULL); |
1061 | if (!np) |
1062 | return -ENODEV; |
1063 | |
1064 | memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid)); |
1065 | |
1066 | return 0; |
1067 | } |
1068 | |
1069 | static int ncsi_rsp_handler_pldm(struct ncsi_request *nr) |
1070 | { |
1071 | return 0; |
1072 | } |
1073 | |
1074 | static int ncsi_rsp_handler_netlink(struct ncsi_request *nr) |
1075 | { |
1076 | struct ncsi_dev_priv *ndp = nr->ndp; |
1077 | struct ncsi_rsp_pkt *rsp; |
1078 | struct ncsi_package *np; |
1079 | struct ncsi_channel *nc; |
1080 | int ret; |
1081 | |
1082 | /* Find the package */ |
1083 | rsp = (struct ncsi_rsp_pkt *)skb_network_header(skb: nr->rsp); |
1084 | ncsi_find_package_and_channel(ndp, id: rsp->rsp.common.channel, |
1085 | np: &np, nc: &nc); |
1086 | if (!np) |
1087 | return -ENODEV; |
1088 | |
1089 | ret = ncsi_send_netlink_rsp(nr, np, nc); |
1090 | |
1091 | return ret; |
1092 | } |
1093 | |
1094 | static int ncsi_rsp_handler_gmcma(struct ncsi_request *nr) |
1095 | { |
1096 | struct ncsi_dev_priv *ndp = nr->ndp; |
1097 | struct net_device *ndev = ndp->ndev.dev; |
1098 | struct ncsi_rsp_gmcma_pkt *rsp; |
1099 | struct sockaddr saddr; |
1100 | int ret = -1; |
1101 | int i; |
1102 | |
1103 | rsp = (struct ncsi_rsp_gmcma_pkt *)skb_network_header(skb: nr->rsp); |
1104 | saddr.sa_family = ndev->type; |
1105 | ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
1106 | |
1107 | netdev_info(dev: ndev, format: "NCSI: Received %d provisioned MAC addresses\n" , |
1108 | rsp->address_count); |
1109 | for (i = 0; i < rsp->address_count; i++) { |
1110 | netdev_info(dev: ndev, format: "NCSI: MAC address %d: %02x:%02x:%02x:%02x:%02x:%02x\n" , |
1111 | i, rsp->addresses[i][0], rsp->addresses[i][1], |
1112 | rsp->addresses[i][2], rsp->addresses[i][3], |
1113 | rsp->addresses[i][4], rsp->addresses[i][5]); |
1114 | } |
1115 | |
1116 | for (i = 0; i < rsp->address_count; i++) { |
1117 | memcpy(saddr.sa_data, &rsp->addresses[i], ETH_ALEN); |
1118 | ret = ndev->netdev_ops->ndo_set_mac_address(ndev, &saddr); |
1119 | if (ret < 0) { |
1120 | netdev_warn(dev: ndev, format: "NCSI: Unable to assign %pM to device\n" , |
1121 | saddr.sa_data); |
1122 | continue; |
1123 | } |
1124 | netdev_warn(dev: ndev, format: "NCSI: Set MAC address to %pM\n" , saddr.sa_data); |
1125 | break; |
1126 | } |
1127 | |
1128 | ndp->gma_flag = ret == 0; |
1129 | return ret; |
1130 | } |
1131 | |
1132 | static struct ncsi_rsp_handler { |
1133 | unsigned char type; |
1134 | int payload; |
1135 | int (*handler)(struct ncsi_request *nr); |
1136 | } ncsi_rsp_handlers[] = { |
1137 | { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis }, |
1138 | { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp }, |
1139 | { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp }, |
1140 | { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec }, |
1141 | { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc }, |
1142 | { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc }, |
1143 | { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt }, |
1144 | { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt }, |
1145 | { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae }, |
1146 | { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl }, |
1147 | { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, |
1148 | { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf }, |
1149 | { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev }, |
1150 | { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv }, |
1151 | { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma }, |
1152 | { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf }, |
1153 | { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf }, |
1154 | { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf }, |
1155 | { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf }, |
1156 | { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc }, |
1157 | { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi }, |
1158 | { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, |
1159 | { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp }, |
1160 | { NCSI_PKT_RSP_GCPS, 204, ncsi_rsp_handler_gcps }, |
1161 | { NCSI_PKT_RSP_GNS, 32, ncsi_rsp_handler_gns }, |
1162 | { NCSI_PKT_RSP_GNPTS, 48, ncsi_rsp_handler_gnpts }, |
1163 | { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps }, |
1164 | { NCSI_PKT_RSP_OEM, -1, ncsi_rsp_handler_oem }, |
1165 | { NCSI_PKT_RSP_PLDM, -1, ncsi_rsp_handler_pldm }, |
1166 | { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid }, |
1167 | { NCSI_PKT_RSP_QPNPR, -1, ncsi_rsp_handler_pldm }, |
1168 | { NCSI_PKT_RSP_SNPR, -1, ncsi_rsp_handler_pldm }, |
1169 | { NCSI_PKT_RSP_GMCMA, -1, ncsi_rsp_handler_gmcma }, |
1170 | }; |
1171 | |
1172 | int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev, |
1173 | struct packet_type *pt, struct net_device *orig_dev) |
1174 | { |
1175 | struct ncsi_rsp_handler *nrh = NULL; |
1176 | struct ncsi_dev *nd; |
1177 | struct ncsi_dev_priv *ndp; |
1178 | struct ncsi_request *nr; |
1179 | struct ncsi_pkt_hdr *hdr; |
1180 | unsigned long flags; |
1181 | int payload, i, ret; |
1182 | |
1183 | /* Find the NCSI device */ |
1184 | nd = ncsi_find_dev(dev: orig_dev); |
1185 | ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; |
1186 | if (!ndp) |
1187 | return -ENODEV; |
1188 | |
1189 | /* Check if it is AEN packet */ |
1190 | hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb); |
1191 | if (hdr->type == NCSI_PKT_AEN) |
1192 | return ncsi_aen_handler(ndp, skb); |
1193 | |
1194 | /* Find the handler */ |
1195 | for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) { |
1196 | if (ncsi_rsp_handlers[i].type == hdr->type) { |
1197 | if (ncsi_rsp_handlers[i].handler) |
1198 | nrh = &ncsi_rsp_handlers[i]; |
1199 | else |
1200 | nrh = NULL; |
1201 | |
1202 | break; |
1203 | } |
1204 | } |
1205 | |
1206 | if (!nrh) { |
1207 | netdev_err(dev: nd->dev, format: "Received unrecognized packet (0x%x)\n" , |
1208 | hdr->type); |
1209 | return -ENOENT; |
1210 | } |
1211 | |
1212 | /* Associate with the request */ |
1213 | spin_lock_irqsave(&ndp->lock, flags); |
1214 | nr = &ndp->requests[hdr->id]; |
1215 | if (!nr->used) { |
1216 | spin_unlock_irqrestore(lock: &ndp->lock, flags); |
1217 | return -ENODEV; |
1218 | } |
1219 | |
1220 | nr->rsp = skb; |
1221 | if (!nr->enabled) { |
1222 | spin_unlock_irqrestore(lock: &ndp->lock, flags); |
1223 | ret = -ENOENT; |
1224 | goto out; |
1225 | } |
1226 | |
1227 | /* Validate the packet */ |
1228 | spin_unlock_irqrestore(lock: &ndp->lock, flags); |
1229 | payload = nrh->payload; |
1230 | if (payload < 0) |
1231 | payload = ntohs(hdr->length); |
1232 | ret = ncsi_validate_rsp_pkt(nr, payload); |
1233 | if (ret) { |
1234 | netdev_warn(dev: ndp->ndev.dev, |
1235 | format: "NCSI: 'bad' packet ignored for type 0x%x\n" , |
1236 | hdr->type); |
1237 | |
1238 | if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) { |
1239 | if (ret == -EPERM) |
1240 | goto out_netlink; |
1241 | else |
1242 | ncsi_send_netlink_err(dev: ndp->ndev.dev, |
1243 | snd_seq: nr->snd_seq, |
1244 | snd_portid: nr->snd_portid, |
1245 | nlhdr: &nr->nlhdr, |
1246 | err: ret); |
1247 | } |
1248 | goto out; |
1249 | } |
1250 | |
1251 | /* Process the packet */ |
1252 | ret = nrh->handler(nr); |
1253 | if (ret) |
1254 | netdev_err(dev: ndp->ndev.dev, |
1255 | format: "NCSI: Handler for packet type 0x%x returned %d\n" , |
1256 | hdr->type, ret); |
1257 | |
1258 | out_netlink: |
1259 | if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) { |
1260 | ret = ncsi_rsp_handler_netlink(nr); |
1261 | if (ret) { |
1262 | netdev_err(dev: ndp->ndev.dev, |
1263 | format: "NCSI: Netlink handler for packet type 0x%x returned %d\n" , |
1264 | hdr->type, ret); |
1265 | } |
1266 | } |
1267 | |
1268 | out: |
1269 | ncsi_free_request(nr); |
1270 | return ret; |
1271 | } |
1272 | |