1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright IBM Corp. 2007, 2009 |
4 | * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, |
5 | * Frank Pavlic <fpavlic@de.ibm.com>, |
6 | * Thomas Spatzier <tspat@de.ibm.com>, |
7 | * Frank Blaschka <frank.blaschka@de.ibm.com> |
8 | */ |
9 | |
10 | #define KMSG_COMPONENT "qeth" |
11 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
12 | |
13 | #include <linux/module.h> |
14 | #include <linux/moduleparam.h> |
15 | #include <linux/bitops.h> |
16 | #include <linux/string.h> |
17 | #include <linux/errno.h> |
18 | #include <linux/kernel.h> |
19 | #include <linux/etherdevice.h> |
20 | #include <linux/ip.h> |
21 | #include <linux/in.h> |
22 | #include <linux/inet.h> |
23 | #include <linux/ipv6.h> |
24 | #include <linux/inetdevice.h> |
25 | #include <linux/igmp.h> |
26 | #include <linux/slab.h> |
27 | #include <linux/if_ether.h> |
28 | #include <linux/if_vlan.h> |
29 | #include <linux/skbuff.h> |
30 | |
31 | #include <net/ip.h> |
32 | #include <net/arp.h> |
33 | #include <net/route.h> |
34 | #include <net/ipv6.h> |
35 | #include <net/ip6_route.h> |
36 | #include <net/iucv/af_iucv.h> |
37 | #include <linux/hashtable.h> |
38 | |
39 | #include "qeth_l3.h" |
40 | |
41 | static int qeth_l3_register_addr_entry(struct qeth_card *, |
42 | struct qeth_ipaddr *); |
43 | static int qeth_l3_deregister_addr_entry(struct qeth_card *, |
44 | struct qeth_ipaddr *); |
45 | |
46 | int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr, |
47 | char *buf) |
48 | { |
49 | if (proto == QETH_PROT_IPV4) |
50 | return scnprintf(buf, INET_ADDRSTRLEN, fmt: "%pI4" , addr); |
51 | else |
52 | return scnprintf(buf, INET6_ADDRSTRLEN, fmt: "%pI6" , addr); |
53 | } |
54 | |
55 | static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, |
56 | struct qeth_ipaddr *query) |
57 | { |
58 | u32 key = qeth_l3_ipaddr_hash(addr: query); |
59 | struct qeth_ipaddr *addr; |
60 | |
61 | if (query->is_multicast) { |
62 | hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key) |
63 | if (qeth_l3_addr_match_ip(a1: addr, a2: query)) |
64 | return addr; |
65 | } else { |
66 | hash_for_each_possible(card->ip_htable, addr, hnode, key) |
67 | if (qeth_l3_addr_match_ip(a1: addr, a2: query)) |
68 | return addr; |
69 | } |
70 | return NULL; |
71 | } |
72 | |
73 | static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) |
74 | { |
75 | int i, j; |
76 | u8 octet; |
77 | |
78 | for (i = 0; i < len; ++i) { |
79 | octet = addr[i]; |
80 | for (j = 7; j >= 0; --j) { |
81 | bits[i*8 + j] = octet & 1; |
82 | octet >>= 1; |
83 | } |
84 | } |
85 | } |
86 | |
87 | static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, |
88 | struct qeth_ipaddr *addr) |
89 | { |
90 | struct qeth_ipato_entry *ipatoe; |
91 | u8 addr_bits[128] = {0, }; |
92 | u8 ipatoe_bits[128] = {0, }; |
93 | int rc = 0; |
94 | |
95 | if (!card->ipato.enabled) |
96 | return false; |
97 | if (addr->type != QETH_IP_TYPE_NORMAL) |
98 | return false; |
99 | |
100 | qeth_l3_convert_addr_to_bits(addr: (u8 *) &addr->u, bits: addr_bits, |
101 | len: (addr->proto == QETH_PROT_IPV4) ? 4 : 16); |
102 | list_for_each_entry(ipatoe, &card->ipato.entries, entry) { |
103 | if (addr->proto != ipatoe->proto) |
104 | continue; |
105 | qeth_l3_convert_addr_to_bits(addr: ipatoe->addr, bits: ipatoe_bits, |
106 | len: (ipatoe->proto == QETH_PROT_IPV4) ? |
107 | 4 : 16); |
108 | rc = !memcmp(p: addr_bits, q: ipatoe_bits, size: ipatoe->mask_bits); |
109 | if (rc) |
110 | break; |
111 | } |
112 | /* invert? */ |
113 | if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) |
114 | rc = !rc; |
115 | else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) |
116 | rc = !rc; |
117 | |
118 | return rc; |
119 | } |
120 | |
121 | static int qeth_l3_delete_ip(struct qeth_card *card, |
122 | struct qeth_ipaddr *tmp_addr) |
123 | { |
124 | int rc = 0; |
125 | struct qeth_ipaddr *addr; |
126 | |
127 | if (tmp_addr->type == QETH_IP_TYPE_RXIP) |
128 | QETH_CARD_TEXT(card, 2, "delrxip" ); |
129 | else if (tmp_addr->type == QETH_IP_TYPE_VIPA) |
130 | QETH_CARD_TEXT(card, 2, "delvipa" ); |
131 | else |
132 | QETH_CARD_TEXT(card, 2, "delip" ); |
133 | |
134 | if (tmp_addr->proto == QETH_PROT_IPV4) |
135 | QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); |
136 | else { |
137 | QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); |
138 | QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); |
139 | } |
140 | |
141 | addr = qeth_l3_find_addr_by_ip(card, query: tmp_addr); |
142 | if (!addr || !qeth_l3_addr_match_all(a1: addr, a2: tmp_addr)) |
143 | return -ENOENT; |
144 | |
145 | addr->ref_counter--; |
146 | if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) |
147 | return rc; |
148 | |
149 | if (qeth_card_hw_is_reachable(card)) |
150 | rc = qeth_l3_deregister_addr_entry(card, addr); |
151 | |
152 | hash_del(node: &addr->hnode); |
153 | kfree(objp: addr); |
154 | |
155 | return rc; |
156 | } |
157 | |
158 | static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) |
159 | { |
160 | int rc = 0; |
161 | struct qeth_ipaddr *addr; |
162 | char buf[INET6_ADDRSTRLEN]; |
163 | |
164 | if (tmp_addr->type == QETH_IP_TYPE_RXIP) |
165 | QETH_CARD_TEXT(card, 2, "addrxip" ); |
166 | else if (tmp_addr->type == QETH_IP_TYPE_VIPA) |
167 | QETH_CARD_TEXT(card, 2, "addvipa" ); |
168 | else |
169 | QETH_CARD_TEXT(card, 2, "addip" ); |
170 | |
171 | if (tmp_addr->proto == QETH_PROT_IPV4) |
172 | QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); |
173 | else { |
174 | QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); |
175 | QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); |
176 | } |
177 | |
178 | addr = qeth_l3_find_addr_by_ip(card, query: tmp_addr); |
179 | if (addr) { |
180 | if (tmp_addr->type != QETH_IP_TYPE_NORMAL) |
181 | return -EADDRINUSE; |
182 | if (qeth_l3_addr_match_all(a1: addr, a2: tmp_addr)) { |
183 | addr->ref_counter++; |
184 | return 0; |
185 | } |
186 | qeth_l3_ipaddr_to_string(proto: tmp_addr->proto, addr: (u8 *)&tmp_addr->u, |
187 | buf); |
188 | dev_warn(&card->gdev->dev, |
189 | "Registering IP address %s failed\n" , buf); |
190 | return -EADDRINUSE; |
191 | } else { |
192 | addr = kmemdup(p: tmp_addr, size: sizeof(*tmp_addr), GFP_KERNEL); |
193 | if (!addr) |
194 | return -ENOMEM; |
195 | |
196 | if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { |
197 | QETH_CARD_TEXT(card, 2, "tkovaddr" ); |
198 | addr->ipato = 1; |
199 | } |
200 | hash_add(card->ip_htable, &addr->hnode, |
201 | qeth_l3_ipaddr_hash(addr)); |
202 | |
203 | if (!qeth_card_hw_is_reachable(card)) { |
204 | addr->disp_flag = QETH_DISP_ADDR_ADD; |
205 | return 0; |
206 | } |
207 | |
208 | rc = qeth_l3_register_addr_entry(card, addr); |
209 | |
210 | if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) { |
211 | addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
212 | } else { |
213 | hash_del(node: &addr->hnode); |
214 | kfree(objp: addr); |
215 | } |
216 | } |
217 | return rc; |
218 | } |
219 | |
220 | static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr, |
221 | bool add) |
222 | { |
223 | int rc; |
224 | |
225 | mutex_lock(&card->ip_lock); |
226 | rc = add ? qeth_l3_add_ip(card, tmp_addr: addr) : qeth_l3_delete_ip(card, tmp_addr: addr); |
227 | mutex_unlock(lock: &card->ip_lock); |
228 | |
229 | return rc; |
230 | } |
231 | |
232 | static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card) |
233 | { |
234 | struct qeth_ipaddr *addr; |
235 | struct hlist_node *tmp; |
236 | int i; |
237 | |
238 | hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { |
239 | hash_del(node: &addr->hnode); |
240 | kfree(objp: addr); |
241 | } |
242 | } |
243 | |
244 | static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) |
245 | { |
246 | struct qeth_ipaddr *addr; |
247 | struct hlist_node *tmp; |
248 | int i; |
249 | |
250 | QETH_CARD_TEXT(card, 4, "clearip" ); |
251 | |
252 | mutex_lock(&card->ip_lock); |
253 | |
254 | hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { |
255 | if (!recover) { |
256 | hash_del(node: &addr->hnode); |
257 | kfree(objp: addr); |
258 | continue; |
259 | } |
260 | addr->disp_flag = QETH_DISP_ADDR_ADD; |
261 | } |
262 | |
263 | mutex_unlock(lock: &card->ip_lock); |
264 | } |
265 | |
266 | static void qeth_l3_recover_ip(struct qeth_card *card) |
267 | { |
268 | struct qeth_ipaddr *addr; |
269 | struct hlist_node *tmp; |
270 | int i; |
271 | int rc; |
272 | |
273 | QETH_CARD_TEXT(card, 4, "recovrip" ); |
274 | |
275 | mutex_lock(&card->ip_lock); |
276 | |
277 | hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { |
278 | if (addr->disp_flag == QETH_DISP_ADDR_ADD) { |
279 | rc = qeth_l3_register_addr_entry(card, addr); |
280 | |
281 | if (!rc) { |
282 | addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
283 | } else { |
284 | hash_del(node: &addr->hnode); |
285 | kfree(objp: addr); |
286 | } |
287 | } |
288 | } |
289 | |
290 | mutex_unlock(lock: &card->ip_lock); |
291 | } |
292 | |
293 | static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply, |
294 | unsigned long data) |
295 | { |
296 | struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; |
297 | |
298 | switch (cmd->hdr.return_code) { |
299 | case IPA_RC_SUCCESS: |
300 | return 0; |
301 | case IPA_RC_DUPLICATE_IP_ADDRESS: |
302 | return -EADDRINUSE; |
303 | case IPA_RC_MC_ADDR_NOT_FOUND: |
304 | return -ENOENT; |
305 | case IPA_RC_LAN_OFFLINE: |
306 | return -ENETDOWN; |
307 | default: |
308 | return -EIO; |
309 | } |
310 | } |
311 | |
312 | static int qeth_l3_send_setdelmc(struct qeth_card *card, |
313 | struct qeth_ipaddr *addr, |
314 | enum qeth_ipa_cmds ipacmd) |
315 | { |
316 | struct qeth_cmd_buffer *iob; |
317 | struct qeth_ipa_cmd *cmd; |
318 | |
319 | QETH_CARD_TEXT(card, 4, "setdelmc" ); |
320 | |
321 | iob = qeth_ipa_alloc_cmd(card, cmd_code: ipacmd, prot: addr->proto, |
322 | IPA_DATA_SIZEOF(setdelipm)); |
323 | if (!iob) |
324 | return -ENOMEM; |
325 | cmd = __ipa_cmd(iob); |
326 | if (addr->proto == QETH_PROT_IPV6) { |
327 | cmd->data.setdelipm.ip = addr->u.a6.addr; |
328 | ipv6_eth_mc_map(addr: &addr->u.a6.addr, buf: cmd->data.setdelipm.mac); |
329 | } else { |
330 | cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr; |
331 | ip_eth_mc_map(naddr: addr->u.a4.addr, buf: cmd->data.setdelipm.mac); |
332 | } |
333 | |
334 | return qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_setdelip_cb, NULL); |
335 | } |
336 | |
337 | static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len) |
338 | { |
339 | unsigned int i = 0; |
340 | |
341 | while (len && i < 4) { |
342 | int mask_len = min_t(int, len, 32); |
343 | |
344 | prefix->s6_addr32[i] = inet_make_mask(logmask: mask_len); |
345 | len -= mask_len; |
346 | i++; |
347 | } |
348 | } |
349 | |
350 | static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) |
351 | { |
352 | switch (addr->type) { |
353 | case QETH_IP_TYPE_RXIP: |
354 | return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; |
355 | case QETH_IP_TYPE_VIPA: |
356 | return (set) ? QETH_IPA_SETIP_VIPA_FLAG : |
357 | QETH_IPA_DELIP_VIPA_FLAG; |
358 | default: |
359 | return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; |
360 | } |
361 | } |
362 | |
363 | static int qeth_l3_send_setdelip(struct qeth_card *card, |
364 | struct qeth_ipaddr *addr, |
365 | enum qeth_ipa_cmds ipacmd) |
366 | { |
367 | struct qeth_cmd_buffer *iob; |
368 | struct qeth_ipa_cmd *cmd; |
369 | u32 flags; |
370 | |
371 | QETH_CARD_TEXT(card, 4, "setdelip" ); |
372 | |
373 | iob = qeth_ipa_alloc_cmd(card, cmd_code: ipacmd, prot: addr->proto, |
374 | IPA_DATA_SIZEOF(setdelip6)); |
375 | if (!iob) |
376 | return -ENOMEM; |
377 | cmd = __ipa_cmd(iob); |
378 | |
379 | flags = qeth_l3_get_setdelip_flags(addr, set: ipacmd == IPA_CMD_SETIP); |
380 | QETH_CARD_TEXT_(card, 4, "flags%02X" , flags); |
381 | |
382 | if (addr->proto == QETH_PROT_IPV6) { |
383 | cmd->data.setdelip6.addr = addr->u.a6.addr; |
384 | qeth_l3_set_ipv6_prefix(prefix: &cmd->data.setdelip6.prefix, |
385 | len: addr->u.a6.pfxlen); |
386 | cmd->data.setdelip6.flags = flags; |
387 | } else { |
388 | cmd->data.setdelip4.addr = addr->u.a4.addr; |
389 | cmd->data.setdelip4.mask = addr->u.a4.mask; |
390 | cmd->data.setdelip4.flags = flags; |
391 | } |
392 | |
393 | return qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_setdelip_cb, NULL); |
394 | } |
395 | |
396 | static int qeth_l3_send_setrouting(struct qeth_card *card, |
397 | enum qeth_routing_types type, enum qeth_prot_versions prot) |
398 | { |
399 | int rc; |
400 | struct qeth_ipa_cmd *cmd; |
401 | struct qeth_cmd_buffer *iob; |
402 | |
403 | QETH_CARD_TEXT(card, 4, "setroutg" ); |
404 | iob = qeth_ipa_alloc_cmd(card, cmd_code: IPA_CMD_SETRTG, prot, |
405 | IPA_DATA_SIZEOF(setrtg)); |
406 | if (!iob) |
407 | return -ENOMEM; |
408 | cmd = __ipa_cmd(iob); |
409 | cmd->data.setrtg.type = (type); |
410 | rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); |
411 | |
412 | return rc; |
413 | } |
414 | |
415 | static int qeth_l3_correct_routing_type(struct qeth_card *card, |
416 | enum qeth_routing_types *type, enum qeth_prot_versions prot) |
417 | { |
418 | if (IS_IQD(card)) { |
419 | switch (*type) { |
420 | case NO_ROUTER: |
421 | case PRIMARY_CONNECTOR: |
422 | case SECONDARY_CONNECTOR: |
423 | case MULTICAST_ROUTER: |
424 | return 0; |
425 | default: |
426 | goto out_inval; |
427 | } |
428 | } else { |
429 | switch (*type) { |
430 | case NO_ROUTER: |
431 | case PRIMARY_ROUTER: |
432 | case SECONDARY_ROUTER: |
433 | return 0; |
434 | case MULTICAST_ROUTER: |
435 | if (qeth_is_ipafunc_supported(card, prot, |
436 | IPA_OSA_MC_ROUTER)) |
437 | return 0; |
438 | goto out_inval; |
439 | default: |
440 | goto out_inval; |
441 | } |
442 | } |
443 | out_inval: |
444 | *type = NO_ROUTER; |
445 | return -EINVAL; |
446 | } |
447 | |
448 | int qeth_l3_setrouting_v4(struct qeth_card *card) |
449 | { |
450 | int rc; |
451 | |
452 | QETH_CARD_TEXT(card, 3, "setrtg4" ); |
453 | |
454 | rc = qeth_l3_correct_routing_type(card, type: &card->options.route4.type, |
455 | prot: QETH_PROT_IPV4); |
456 | if (rc) |
457 | return rc; |
458 | |
459 | rc = qeth_l3_send_setrouting(card, type: card->options.route4.type, |
460 | prot: QETH_PROT_IPV4); |
461 | if (rc) { |
462 | card->options.route4.type = NO_ROUTER; |
463 | QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n" , |
464 | rc, CARD_DEVID(card)); |
465 | } |
466 | return rc; |
467 | } |
468 | |
469 | int qeth_l3_setrouting_v6(struct qeth_card *card) |
470 | { |
471 | int rc = 0; |
472 | |
473 | QETH_CARD_TEXT(card, 3, "setrtg6" ); |
474 | |
475 | if (!qeth_is_supported(card, IPA_IPV6)) |
476 | return 0; |
477 | rc = qeth_l3_correct_routing_type(card, type: &card->options.route6.type, |
478 | prot: QETH_PROT_IPV6); |
479 | if (rc) |
480 | return rc; |
481 | |
482 | rc = qeth_l3_send_setrouting(card, type: card->options.route6.type, |
483 | prot: QETH_PROT_IPV6); |
484 | if (rc) { |
485 | card->options.route6.type = NO_ROUTER; |
486 | QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n" , |
487 | rc, CARD_DEVID(card)); |
488 | } |
489 | return rc; |
490 | } |
491 | |
492 | /* |
493 | * IP address takeover related functions |
494 | */ |
495 | |
496 | /* |
497 | * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. |
498 | * |
499 | * Caller must hold ip_lock. |
500 | */ |
501 | void qeth_l3_update_ipato(struct qeth_card *card) |
502 | { |
503 | struct qeth_ipaddr *addr; |
504 | unsigned int i; |
505 | |
506 | hash_for_each(card->ip_htable, i, addr, hnode) { |
507 | if (addr->type != QETH_IP_TYPE_NORMAL) |
508 | continue; |
509 | addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); |
510 | } |
511 | } |
512 | |
513 | static void qeth_l3_clear_ipato_list(struct qeth_card *card) |
514 | { |
515 | struct qeth_ipato_entry *ipatoe, *tmp; |
516 | |
517 | mutex_lock(&card->ip_lock); |
518 | |
519 | list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { |
520 | list_del(entry: &ipatoe->entry); |
521 | kfree(objp: ipatoe); |
522 | } |
523 | |
524 | qeth_l3_update_ipato(card); |
525 | mutex_unlock(lock: &card->ip_lock); |
526 | } |
527 | |
528 | int qeth_l3_add_ipato_entry(struct qeth_card *card, |
529 | struct qeth_ipato_entry *new) |
530 | { |
531 | struct qeth_ipato_entry *ipatoe; |
532 | int rc = 0; |
533 | |
534 | QETH_CARD_TEXT(card, 2, "addipato" ); |
535 | |
536 | mutex_lock(&card->ip_lock); |
537 | |
538 | list_for_each_entry(ipatoe, &card->ipato.entries, entry) { |
539 | if (ipatoe->proto != new->proto) |
540 | continue; |
541 | if (!memcmp(p: ipatoe->addr, q: new->addr, |
542 | size: (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) && |
543 | (ipatoe->mask_bits == new->mask_bits)) { |
544 | rc = -EEXIST; |
545 | break; |
546 | } |
547 | } |
548 | |
549 | if (!rc) { |
550 | list_add_tail(new: &new->entry, head: &card->ipato.entries); |
551 | qeth_l3_update_ipato(card); |
552 | } |
553 | |
554 | mutex_unlock(lock: &card->ip_lock); |
555 | |
556 | return rc; |
557 | } |
558 | |
559 | int qeth_l3_del_ipato_entry(struct qeth_card *card, |
560 | enum qeth_prot_versions proto, u8 *addr, |
561 | unsigned int mask_bits) |
562 | { |
563 | struct qeth_ipato_entry *ipatoe, *tmp; |
564 | int rc = -ENOENT; |
565 | |
566 | QETH_CARD_TEXT(card, 2, "delipato" ); |
567 | |
568 | mutex_lock(&card->ip_lock); |
569 | |
570 | list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { |
571 | if (ipatoe->proto != proto) |
572 | continue; |
573 | if (!memcmp(p: ipatoe->addr, q: addr, |
574 | size: (proto == QETH_PROT_IPV4) ? 4 : 16) && |
575 | (ipatoe->mask_bits == mask_bits)) { |
576 | list_del(entry: &ipatoe->entry); |
577 | qeth_l3_update_ipato(card); |
578 | kfree(objp: ipatoe); |
579 | rc = 0; |
580 | } |
581 | } |
582 | |
583 | mutex_unlock(lock: &card->ip_lock); |
584 | |
585 | return rc; |
586 | } |
587 | |
588 | int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, |
589 | enum qeth_ip_types type, |
590 | enum qeth_prot_versions proto) |
591 | { |
592 | struct qeth_ipaddr addr; |
593 | |
594 | qeth_l3_init_ipaddr(addr: &addr, type, proto); |
595 | if (proto == QETH_PROT_IPV4) |
596 | memcpy(&addr.u.a4.addr, ip, 4); |
597 | else |
598 | memcpy(&addr.u.a6.addr, ip, 16); |
599 | |
600 | return qeth_l3_modify_ip(card, addr: &addr, add); |
601 | } |
602 | |
603 | int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) |
604 | { |
605 | struct qeth_ipaddr addr; |
606 | unsigned int i; |
607 | |
608 | qeth_l3_init_ipaddr(addr: &addr, type: QETH_IP_TYPE_NORMAL, proto: QETH_PROT_IPV6); |
609 | addr.u.a6.addr.s6_addr[0] = 0xfe; |
610 | addr.u.a6.addr.s6_addr[1] = 0x80; |
611 | for (i = 0; i < 8; i++) |
612 | addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; |
613 | |
614 | return qeth_l3_modify_ip(card, addr: &addr, add); |
615 | } |
616 | |
617 | static int qeth_l3_register_addr_entry(struct qeth_card *card, |
618 | struct qeth_ipaddr *addr) |
619 | { |
620 | char buf[50]; |
621 | int rc = 0; |
622 | int cnt = 3; |
623 | |
624 | if (card->options.sniffer) |
625 | return 0; |
626 | |
627 | if (addr->proto == QETH_PROT_IPV4) { |
628 | QETH_CARD_TEXT(card, 2, "setaddr4" ); |
629 | QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); |
630 | } else if (addr->proto == QETH_PROT_IPV6) { |
631 | QETH_CARD_TEXT(card, 2, "setaddr6" ); |
632 | QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); |
633 | QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); |
634 | } else { |
635 | QETH_CARD_TEXT(card, 2, "setaddr?" ); |
636 | QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); |
637 | } |
638 | do { |
639 | if (addr->is_multicast) |
640 | rc = qeth_l3_send_setdelmc(card, addr, ipacmd: IPA_CMD_SETIPM); |
641 | else |
642 | rc = qeth_l3_send_setdelip(card, addr, ipacmd: IPA_CMD_SETIP); |
643 | if (rc) |
644 | QETH_CARD_TEXT(card, 2, "failed" ); |
645 | } while ((--cnt > 0) && rc); |
646 | if (rc) { |
647 | QETH_CARD_TEXT(card, 2, "FAILED" ); |
648 | qeth_l3_ipaddr_to_string(proto: addr->proto, addr: (u8 *)&addr->u, buf); |
649 | dev_warn(&card->gdev->dev, |
650 | "Registering IP address %s failed\n" , buf); |
651 | } |
652 | return rc; |
653 | } |
654 | |
655 | static int qeth_l3_deregister_addr_entry(struct qeth_card *card, |
656 | struct qeth_ipaddr *addr) |
657 | { |
658 | int rc = 0; |
659 | |
660 | if (card->options.sniffer) |
661 | return 0; |
662 | |
663 | if (addr->proto == QETH_PROT_IPV4) { |
664 | QETH_CARD_TEXT(card, 2, "deladdr4" ); |
665 | QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); |
666 | } else if (addr->proto == QETH_PROT_IPV6) { |
667 | QETH_CARD_TEXT(card, 2, "deladdr6" ); |
668 | QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); |
669 | QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); |
670 | } else { |
671 | QETH_CARD_TEXT(card, 2, "deladdr?" ); |
672 | QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); |
673 | } |
674 | if (addr->is_multicast) |
675 | rc = qeth_l3_send_setdelmc(card, addr, ipacmd: IPA_CMD_DELIPM); |
676 | else |
677 | rc = qeth_l3_send_setdelip(card, addr, ipacmd: IPA_CMD_DELIP); |
678 | if (rc) |
679 | QETH_CARD_TEXT(card, 2, "failed" ); |
680 | |
681 | return rc; |
682 | } |
683 | |
684 | static int qeth_l3_setadapter_parms(struct qeth_card *card) |
685 | { |
686 | int rc = 0; |
687 | |
688 | QETH_CARD_TEXT(card, 2, "setadprm" ); |
689 | |
690 | if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { |
691 | rc = qeth_setadpparms_change_macaddr(card); |
692 | if (rc) |
693 | dev_warn(&card->gdev->dev, "Reading the adapter MAC" |
694 | " address failed\n" ); |
695 | } |
696 | |
697 | return rc; |
698 | } |
699 | |
700 | static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) |
701 | { |
702 | int rc; |
703 | |
704 | QETH_CARD_TEXT(card, 3, "ipaarp" ); |
705 | |
706 | if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { |
707 | dev_info(&card->gdev->dev, |
708 | "ARP processing not supported on %s!\n" , |
709 | netdev_name(card->dev)); |
710 | return 0; |
711 | } |
712 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_ARP_PROCESSING, |
713 | cmd_code: IPA_CMD_ASS_START, NULL); |
714 | if (rc) { |
715 | dev_warn(&card->gdev->dev, |
716 | "Starting ARP processing support for %s failed\n" , |
717 | netdev_name(card->dev)); |
718 | } |
719 | return rc; |
720 | } |
721 | |
722 | static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) |
723 | { |
724 | int rc; |
725 | |
726 | QETH_CARD_TEXT(card, 3, "stsrcmac" ); |
727 | |
728 | if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { |
729 | dev_info(&card->gdev->dev, |
730 | "Inbound source MAC-address not supported on %s\n" , |
731 | netdev_name(card->dev)); |
732 | return -EOPNOTSUPP; |
733 | } |
734 | |
735 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_SOURCE_MAC, |
736 | cmd_code: IPA_CMD_ASS_START, NULL); |
737 | if (rc) |
738 | dev_warn(&card->gdev->dev, |
739 | "Starting source MAC-address support for %s failed\n" , |
740 | netdev_name(card->dev)); |
741 | return rc; |
742 | } |
743 | |
744 | static int qeth_l3_start_ipa_vlan(struct qeth_card *card) |
745 | { |
746 | int rc = 0; |
747 | |
748 | QETH_CARD_TEXT(card, 3, "strtvlan" ); |
749 | |
750 | if (!qeth_is_supported(card, IPA_FULL_VLAN)) { |
751 | dev_info(&card->gdev->dev, |
752 | "VLAN not supported on %s\n" , netdev_name(card->dev)); |
753 | return -EOPNOTSUPP; |
754 | } |
755 | |
756 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_VLAN_PRIO, |
757 | cmd_code: IPA_CMD_ASS_START, NULL); |
758 | if (rc) { |
759 | dev_warn(&card->gdev->dev, |
760 | "Starting VLAN support for %s failed\n" , |
761 | netdev_name(card->dev)); |
762 | } else { |
763 | dev_info(&card->gdev->dev, "VLAN enabled\n" ); |
764 | } |
765 | return rc; |
766 | } |
767 | |
768 | static int qeth_l3_start_ipa_multicast(struct qeth_card *card) |
769 | { |
770 | int rc; |
771 | |
772 | QETH_CARD_TEXT(card, 3, "stmcast" ); |
773 | |
774 | if (!qeth_is_supported(card, IPA_MULTICASTING)) { |
775 | dev_info(&card->gdev->dev, |
776 | "Multicast not supported on %s\n" , |
777 | netdev_name(card->dev)); |
778 | return -EOPNOTSUPP; |
779 | } |
780 | |
781 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_MULTICASTING, |
782 | cmd_code: IPA_CMD_ASS_START, NULL); |
783 | if (rc) { |
784 | dev_warn(&card->gdev->dev, |
785 | "Starting multicast support for %s failed\n" , |
786 | netdev_name(card->dev)); |
787 | } else { |
788 | dev_info(&card->gdev->dev, "Multicast enabled\n" ); |
789 | card->dev->flags |= IFF_MULTICAST; |
790 | } |
791 | return rc; |
792 | } |
793 | |
794 | static int qeth_l3_softsetup_ipv6(struct qeth_card *card) |
795 | { |
796 | u32 ipv6_data = 3; |
797 | int rc; |
798 | |
799 | QETH_CARD_TEXT(card, 3, "softipv6" ); |
800 | |
801 | if (IS_IQD(card)) |
802 | goto out; |
803 | |
804 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_IPV6, cmd_code: IPA_CMD_ASS_START, |
805 | data: &ipv6_data); |
806 | if (rc) { |
807 | dev_err(&card->gdev->dev, |
808 | "Activating IPv6 support for %s failed\n" , |
809 | netdev_name(card->dev)); |
810 | return rc; |
811 | } |
812 | rc = qeth_send_simple_setassparms_v6(card, ipa_func: IPA_IPV6, cmd_code: IPA_CMD_ASS_START, |
813 | NULL); |
814 | if (rc) { |
815 | dev_err(&card->gdev->dev, |
816 | "Activating IPv6 support for %s failed\n" , |
817 | netdev_name(card->dev)); |
818 | return rc; |
819 | } |
820 | rc = qeth_send_simple_setassparms_v6(card, ipa_func: IPA_PASSTHRU, |
821 | cmd_code: IPA_CMD_ASS_START, NULL); |
822 | if (rc) { |
823 | dev_warn(&card->gdev->dev, |
824 | "Enabling the passthrough mode for %s failed\n" , |
825 | netdev_name(card->dev)); |
826 | return rc; |
827 | } |
828 | out: |
829 | dev_info(&card->gdev->dev, "IPV6 enabled\n" ); |
830 | return 0; |
831 | } |
832 | |
833 | static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) |
834 | { |
835 | QETH_CARD_TEXT(card, 3, "strtipv6" ); |
836 | |
837 | if (!qeth_is_supported(card, IPA_IPV6)) { |
838 | dev_info(&card->gdev->dev, |
839 | "IPv6 not supported on %s\n" , netdev_name(card->dev)); |
840 | return 0; |
841 | } |
842 | return qeth_l3_softsetup_ipv6(card); |
843 | } |
844 | |
845 | static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) |
846 | { |
847 | u32 filter_data = 1; |
848 | int rc; |
849 | |
850 | QETH_CARD_TEXT(card, 3, "stbrdcst" ); |
851 | card->info.broadcast_capable = 0; |
852 | if (!qeth_is_supported(card, IPA_FILTERING)) { |
853 | dev_info(&card->gdev->dev, |
854 | "Broadcast not supported on %s\n" , |
855 | netdev_name(card->dev)); |
856 | rc = -EOPNOTSUPP; |
857 | goto out; |
858 | } |
859 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_FILTERING, |
860 | cmd_code: IPA_CMD_ASS_START, NULL); |
861 | if (rc) { |
862 | dev_warn(&card->gdev->dev, |
863 | "Enabling broadcast filtering for %s failed\n" , |
864 | netdev_name(card->dev)); |
865 | goto out; |
866 | } |
867 | |
868 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_FILTERING, |
869 | cmd_code: IPA_CMD_ASS_CONFIGURE, data: &filter_data); |
870 | if (rc) { |
871 | dev_warn(&card->gdev->dev, |
872 | "Setting up broadcast filtering for %s failed\n" , |
873 | netdev_name(card->dev)); |
874 | goto out; |
875 | } |
876 | card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; |
877 | dev_info(&card->gdev->dev, "Broadcast enabled\n" ); |
878 | rc = qeth_send_simple_setassparms(card, ipa_func: IPA_FILTERING, |
879 | cmd_code: IPA_CMD_ASS_ENABLE, data: &filter_data); |
880 | if (rc) { |
881 | dev_warn(&card->gdev->dev, |
882 | "Setting up broadcast echo filtering for %s failed\n" , |
883 | netdev_name(card->dev)); |
884 | goto out; |
885 | } |
886 | card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; |
887 | out: |
888 | if (card->info.broadcast_capable) |
889 | card->dev->flags |= IFF_BROADCAST; |
890 | else |
891 | card->dev->flags &= ~IFF_BROADCAST; |
892 | return rc; |
893 | } |
894 | |
895 | static void qeth_l3_start_ipassists(struct qeth_card *card) |
896 | { |
897 | QETH_CARD_TEXT(card, 3, "strtipas" ); |
898 | |
899 | qeth_l3_start_ipa_arp_processing(card); /* go on*/ |
900 | qeth_l3_start_ipa_source_mac(card); /* go on*/ |
901 | qeth_l3_start_ipa_vlan(card); /* go on*/ |
902 | qeth_l3_start_ipa_multicast(card); /* go on*/ |
903 | qeth_l3_start_ipa_ipv6(card); /* go on*/ |
904 | qeth_l3_start_ipa_broadcast(card); /* go on*/ |
905 | } |
906 | |
907 | static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, |
908 | struct qeth_reply *reply, unsigned long data) |
909 | { |
910 | struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; |
911 | |
912 | if (cmd->hdr.return_code) |
913 | return -EIO; |
914 | if (!is_valid_ether_addr(addr: cmd->data.create_destroy_addr.mac_addr)) |
915 | return -EADDRNOTAVAIL; |
916 | |
917 | eth_hw_addr_set(dev: card->dev, addr: cmd->data.create_destroy_addr.mac_addr); |
918 | return 0; |
919 | } |
920 | |
921 | static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) |
922 | { |
923 | int rc = 0; |
924 | struct qeth_cmd_buffer *iob; |
925 | |
926 | QETH_CARD_TEXT(card, 2, "hsrmac" ); |
927 | |
928 | iob = qeth_ipa_alloc_cmd(card, cmd_code: IPA_CMD_CREATE_ADDR, prot: QETH_PROT_IPV6, |
929 | IPA_DATA_SIZEOF(create_destroy_addr)); |
930 | if (!iob) |
931 | return -ENOMEM; |
932 | |
933 | rc = qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_iqd_read_initial_mac_cb, |
934 | NULL); |
935 | return rc; |
936 | } |
937 | |
938 | static int qeth_l3_get_unique_id_cb(struct qeth_card *card, |
939 | struct qeth_reply *reply, unsigned long data) |
940 | { |
941 | struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; |
942 | u16 *uid = reply->param; |
943 | |
944 | if (cmd->hdr.return_code == 0) { |
945 | *uid = cmd->data.create_destroy_addr.uid; |
946 | return 0; |
947 | } |
948 | |
949 | dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n" ); |
950 | return -EIO; |
951 | } |
952 | |
953 | static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid) |
954 | { |
955 | struct qeth_cmd_buffer *iob; |
956 | |
957 | QETH_CARD_TEXT(card, 2, "guniqeid" ); |
958 | |
959 | if (!qeth_is_supported(card, IPA_IPV6)) |
960 | goto out; |
961 | |
962 | iob = qeth_ipa_alloc_cmd(card, cmd_code: IPA_CMD_CREATE_ADDR, prot: QETH_PROT_IPV6, |
963 | IPA_DATA_SIZEOF(create_destroy_addr)); |
964 | if (!iob) |
965 | goto out; |
966 | |
967 | __ipa_cmd(iob)->data.create_destroy_addr.uid = uid; |
968 | qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_get_unique_id_cb, &uid); |
969 | |
970 | out: |
971 | return uid; |
972 | } |
973 | |
974 | static int |
975 | qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, |
976 | unsigned long data) |
977 | { |
978 | struct qeth_ipa_cmd *cmd; |
979 | __u16 rc; |
980 | |
981 | QETH_CARD_TEXT(card, 2, "diastrcb" ); |
982 | |
983 | cmd = (struct qeth_ipa_cmd *)data; |
984 | rc = cmd->hdr.return_code; |
985 | if (rc) |
986 | QETH_CARD_TEXT_(card, 2, "dxter%x" , rc); |
987 | switch (cmd->data.diagass.action) { |
988 | case QETH_DIAGS_CMD_TRACE_QUERY: |
989 | break; |
990 | case QETH_DIAGS_CMD_TRACE_DISABLE: |
991 | switch (rc) { |
992 | case 0: |
993 | case IPA_RC_INVALID_SUBCMD: |
994 | card->info.promisc_mode = SET_PROMISC_MODE_OFF; |
995 | dev_info(&card->gdev->dev, "The HiperSockets network " |
996 | "traffic analyzer is deactivated\n" ); |
997 | break; |
998 | default: |
999 | break; |
1000 | } |
1001 | break; |
1002 | case QETH_DIAGS_CMD_TRACE_ENABLE: |
1003 | switch (rc) { |
1004 | case 0: |
1005 | card->info.promisc_mode = SET_PROMISC_MODE_ON; |
1006 | dev_info(&card->gdev->dev, "The HiperSockets network " |
1007 | "traffic analyzer is activated\n" ); |
1008 | break; |
1009 | case IPA_RC_HARDWARE_AUTH_ERROR: |
1010 | dev_warn(&card->gdev->dev, "The device is not " |
1011 | "authorized to run as a HiperSockets network " |
1012 | "traffic analyzer\n" ); |
1013 | break; |
1014 | case IPA_RC_TRACE_ALREADY_ACTIVE: |
1015 | dev_warn(&card->gdev->dev, "A HiperSockets " |
1016 | "network traffic analyzer is already " |
1017 | "active in the HiperSockets LAN\n" ); |
1018 | break; |
1019 | default: |
1020 | break; |
1021 | } |
1022 | break; |
1023 | default: |
1024 | QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n" , |
1025 | cmd->data.diagass.action, CARD_DEVID(card)); |
1026 | } |
1027 | |
1028 | return rc ? -EIO : 0; |
1029 | } |
1030 | |
1031 | static int |
1032 | qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) |
1033 | { |
1034 | struct qeth_cmd_buffer *iob; |
1035 | struct qeth_ipa_cmd *cmd; |
1036 | |
1037 | QETH_CARD_TEXT(card, 2, "diagtrac" ); |
1038 | |
1039 | iob = qeth_get_diag_cmd(card, sub_cmd: QETH_DIAGS_CMD_TRACE, data_length: 0); |
1040 | if (!iob) |
1041 | return -ENOMEM; |
1042 | cmd = __ipa_cmd(iob); |
1043 | cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; |
1044 | cmd->data.diagass.action = diags_cmd; |
1045 | return qeth_send_ipa_cmd(card, iob, reply_cb: qeth_diags_trace_cb, NULL); |
1046 | } |
1047 | |
1048 | static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg) |
1049 | { |
1050 | struct qeth_card *card = arg; |
1051 | struct inet6_dev *in6_dev; |
1052 | struct in_device *in4_dev; |
1053 | struct qeth_ipaddr *ipm; |
1054 | struct qeth_ipaddr tmp; |
1055 | struct ip_mc_list *im4; |
1056 | struct ifmcaddr6 *im6; |
1057 | |
1058 | QETH_CARD_TEXT(card, 4, "addmc" ); |
1059 | |
1060 | if (!dev || !(dev->flags & IFF_UP)) |
1061 | goto out; |
1062 | |
1063 | in4_dev = __in_dev_get_rtnl(dev); |
1064 | if (!in4_dev) |
1065 | goto walk_ipv6; |
1066 | |
1067 | qeth_l3_init_ipaddr(addr: &tmp, type: QETH_IP_TYPE_NORMAL, proto: QETH_PROT_IPV4); |
1068 | tmp.disp_flag = QETH_DISP_ADDR_ADD; |
1069 | tmp.is_multicast = 1; |
1070 | |
1071 | for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL; |
1072 | im4 = rtnl_dereference(im4->next_rcu)) { |
1073 | tmp.u.a4.addr = im4->multiaddr; |
1074 | |
1075 | ipm = qeth_l3_find_addr_by_ip(card, query: &tmp); |
1076 | if (ipm) { |
1077 | /* for mcast, by-IP match means full match */ |
1078 | ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
1079 | continue; |
1080 | } |
1081 | |
1082 | ipm = kmemdup(p: &tmp, size: sizeof(tmp), GFP_KERNEL); |
1083 | if (!ipm) |
1084 | continue; |
1085 | |
1086 | hash_add(card->rx_mode_addrs, &ipm->hnode, |
1087 | qeth_l3_ipaddr_hash(ipm)); |
1088 | } |
1089 | |
1090 | walk_ipv6: |
1091 | if (!qeth_is_supported(card, IPA_IPV6)) |
1092 | goto out; |
1093 | |
1094 | in6_dev = __in6_dev_get(dev); |
1095 | if (!in6_dev) |
1096 | goto out; |
1097 | |
1098 | qeth_l3_init_ipaddr(addr: &tmp, type: QETH_IP_TYPE_NORMAL, proto: QETH_PROT_IPV6); |
1099 | tmp.disp_flag = QETH_DISP_ADDR_ADD; |
1100 | tmp.is_multicast = 1; |
1101 | |
1102 | for (im6 = rtnl_dereference(in6_dev->mc_list); |
1103 | im6; |
1104 | im6 = rtnl_dereference(im6->next)) { |
1105 | tmp.u.a6.addr = im6->mca_addr; |
1106 | |
1107 | ipm = qeth_l3_find_addr_by_ip(card, query: &tmp); |
1108 | if (ipm) { |
1109 | /* for mcast, by-IP match means full match */ |
1110 | ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
1111 | continue; |
1112 | } |
1113 | |
1114 | ipm = kmemdup(p: &tmp, size: sizeof(tmp), GFP_ATOMIC); |
1115 | if (!ipm) |
1116 | continue; |
1117 | |
1118 | hash_add(card->rx_mode_addrs, &ipm->hnode, |
1119 | qeth_l3_ipaddr_hash(ipm)); |
1120 | |
1121 | } |
1122 | |
1123 | out: |
1124 | return 0; |
1125 | } |
1126 | |
1127 | static void qeth_l3_set_promisc_mode(struct qeth_card *card) |
1128 | { |
1129 | bool enable = card->dev->flags & IFF_PROMISC; |
1130 | |
1131 | if (card->info.promisc_mode == enable) |
1132 | return; |
1133 | |
1134 | if (IS_VM_NIC(card)) { /* Guestlan trace */ |
1135 | if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) |
1136 | qeth_setadp_promisc_mode(card, enable); |
1137 | } else if (card->options.sniffer && /* HiperSockets trace */ |
1138 | qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { |
1139 | if (enable) { |
1140 | QETH_CARD_TEXT(card, 3, "+promisc" ); |
1141 | qeth_diags_trace(card, diags_cmd: QETH_DIAGS_CMD_TRACE_ENABLE); |
1142 | } else { |
1143 | QETH_CARD_TEXT(card, 3, "-promisc" ); |
1144 | qeth_diags_trace(card, diags_cmd: QETH_DIAGS_CMD_TRACE_DISABLE); |
1145 | } |
1146 | } |
1147 | } |
1148 | |
1149 | static void qeth_l3_rx_mode_work(struct work_struct *work) |
1150 | { |
1151 | struct qeth_card *card = container_of(work, struct qeth_card, |
1152 | rx_mode_work); |
1153 | struct qeth_ipaddr *addr; |
1154 | struct hlist_node *tmp; |
1155 | int i, rc; |
1156 | |
1157 | QETH_CARD_TEXT(card, 3, "setmulti" ); |
1158 | |
1159 | if (!card->options.sniffer) { |
1160 | rtnl_lock(); |
1161 | qeth_l3_add_mcast_rtnl(dev: card->dev, vid: 0, arg: card); |
1162 | if (qeth_is_supported(card, IPA_FULL_VLAN)) |
1163 | vlan_for_each(dev: card->dev, action: qeth_l3_add_mcast_rtnl, arg: card); |
1164 | rtnl_unlock(); |
1165 | |
1166 | hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { |
1167 | switch (addr->disp_flag) { |
1168 | case QETH_DISP_ADDR_DELETE: |
1169 | rc = qeth_l3_deregister_addr_entry(card, addr); |
1170 | if (!rc || rc == -ENOENT) { |
1171 | hash_del(node: &addr->hnode); |
1172 | kfree(objp: addr); |
1173 | } |
1174 | break; |
1175 | case QETH_DISP_ADDR_ADD: |
1176 | rc = qeth_l3_register_addr_entry(card, addr); |
1177 | if (rc && rc != -ENETDOWN) { |
1178 | hash_del(node: &addr->hnode); |
1179 | kfree(objp: addr); |
1180 | break; |
1181 | } |
1182 | fallthrough; |
1183 | default: |
1184 | /* for next call to set_rx_mode(): */ |
1185 | addr->disp_flag = QETH_DISP_ADDR_DELETE; |
1186 | } |
1187 | } |
1188 | } |
1189 | |
1190 | qeth_l3_set_promisc_mode(card); |
1191 | } |
1192 | |
1193 | static int qeth_l3_arp_makerc(u16 rc) |
1194 | { |
1195 | switch (rc) { |
1196 | case IPA_RC_SUCCESS: |
1197 | return 0; |
1198 | case QETH_IPA_ARP_RC_NOTSUPP: |
1199 | case QETH_IPA_ARP_RC_Q_NOTSUPP: |
1200 | return -EOPNOTSUPP; |
1201 | case QETH_IPA_ARP_RC_OUT_OF_RANGE: |
1202 | return -EINVAL; |
1203 | case QETH_IPA_ARP_RC_Q_NO_DATA: |
1204 | return -ENOENT; |
1205 | default: |
1206 | return -EIO; |
1207 | } |
1208 | } |
1209 | |
1210 | static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, |
1211 | unsigned long data) |
1212 | { |
1213 | struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; |
1214 | |
1215 | qeth_setassparms_cb(card, reply, data); |
1216 | return qeth_l3_arp_makerc(rc: cmd->hdr.return_code); |
1217 | } |
1218 | |
1219 | static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) |
1220 | { |
1221 | struct qeth_cmd_buffer *iob; |
1222 | int rc; |
1223 | |
1224 | QETH_CARD_TEXT(card, 3, "arpstnoe" ); |
1225 | |
1226 | /* |
1227 | * currently GuestLAN only supports the ARP assist function |
1228 | * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; |
1229 | * thus we say EOPNOTSUPP for this ARP function |
1230 | */ |
1231 | if (IS_VM_NIC(card)) |
1232 | return -EOPNOTSUPP; |
1233 | if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { |
1234 | return -EOPNOTSUPP; |
1235 | } |
1236 | |
1237 | iob = qeth_get_setassparms_cmd(card, ipa_func: IPA_ARP_PROCESSING, |
1238 | cmd_code: IPA_CMD_ASS_ARP_SET_NO_ENTRIES, |
1239 | SETASS_DATA_SIZEOF(flags_32bit), |
1240 | prot: QETH_PROT_IPV4); |
1241 | if (!iob) |
1242 | return -ENOMEM; |
1243 | |
1244 | __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries; |
1245 | rc = qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_arp_cmd_cb, NULL); |
1246 | if (rc) |
1247 | QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n" , |
1248 | CARD_DEVID(card), rc); |
1249 | return rc; |
1250 | } |
1251 | |
1252 | static __u32 get_arp_entry_size(struct qeth_card *card, |
1253 | struct qeth_arp_query_data *qdata, |
1254 | struct qeth_arp_entrytype *type, __u8 strip_entries) |
1255 | { |
1256 | __u32 rc; |
1257 | __u8 is_hsi; |
1258 | |
1259 | is_hsi = qdata->reply_bits == 5; |
1260 | if (type->ip == QETHARP_IP_ADDR_V4) { |
1261 | QETH_CARD_TEXT(card, 4, "arpev4" ); |
1262 | if (strip_entries) { |
1263 | rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : |
1264 | sizeof(struct qeth_arp_qi_entry7_short); |
1265 | } else { |
1266 | rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : |
1267 | sizeof(struct qeth_arp_qi_entry7); |
1268 | } |
1269 | } else if (type->ip == QETHARP_IP_ADDR_V6) { |
1270 | QETH_CARD_TEXT(card, 4, "arpev6" ); |
1271 | if (strip_entries) { |
1272 | rc = is_hsi ? |
1273 | sizeof(struct qeth_arp_qi_entry5_short_ipv6) : |
1274 | sizeof(struct qeth_arp_qi_entry7_short_ipv6); |
1275 | } else { |
1276 | rc = is_hsi ? |
1277 | sizeof(struct qeth_arp_qi_entry5_ipv6) : |
1278 | sizeof(struct qeth_arp_qi_entry7_ipv6); |
1279 | } |
1280 | } else { |
1281 | QETH_CARD_TEXT(card, 4, "arpinv" ); |
1282 | rc = 0; |
1283 | } |
1284 | |
1285 | return rc; |
1286 | } |
1287 | |
1288 | static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) |
1289 | { |
1290 | return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || |
1291 | (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); |
1292 | } |
1293 | |
1294 | static int qeth_l3_arp_query_cb(struct qeth_card *card, |
1295 | struct qeth_reply *reply, unsigned long data) |
1296 | { |
1297 | struct qeth_ipa_cmd *cmd; |
1298 | struct qeth_arp_query_data *qdata; |
1299 | struct qeth_arp_query_info *qinfo; |
1300 | int e; |
1301 | int entrybytes_done; |
1302 | int stripped_bytes; |
1303 | __u8 do_strip_entries; |
1304 | |
1305 | QETH_CARD_TEXT(card, 3, "arpquecb" ); |
1306 | |
1307 | qinfo = (struct qeth_arp_query_info *) reply->param; |
1308 | cmd = (struct qeth_ipa_cmd *) data; |
1309 | QETH_CARD_TEXT_(card, 4, "%i" , cmd->hdr.prot_version); |
1310 | if (cmd->hdr.return_code) { |
1311 | QETH_CARD_TEXT(card, 4, "arpcberr" ); |
1312 | QETH_CARD_TEXT_(card, 4, "%i" , cmd->hdr.return_code); |
1313 | return qeth_l3_arp_makerc(rc: cmd->hdr.return_code); |
1314 | } |
1315 | if (cmd->data.setassparms.hdr.return_code) { |
1316 | cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; |
1317 | QETH_CARD_TEXT(card, 4, "setaperr" ); |
1318 | QETH_CARD_TEXT_(card, 4, "%i" , cmd->hdr.return_code); |
1319 | return qeth_l3_arp_makerc(rc: cmd->hdr.return_code); |
1320 | } |
1321 | qdata = &cmd->data.setassparms.data.query_arp; |
1322 | QETH_CARD_TEXT_(card, 4, "anoen%i" , qdata->no_entries); |
1323 | |
1324 | do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; |
1325 | stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; |
1326 | entrybytes_done = 0; |
1327 | for (e = 0; e < qdata->no_entries; ++e) { |
1328 | char *cur_entry; |
1329 | __u32 esize; |
1330 | struct qeth_arp_entrytype *etype; |
1331 | |
1332 | cur_entry = &qdata->data + entrybytes_done; |
1333 | etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; |
1334 | if (!arpentry_matches_prot(type: etype, prot: cmd->hdr.prot_version)) { |
1335 | QETH_CARD_TEXT(card, 4, "pmis" ); |
1336 | QETH_CARD_TEXT_(card, 4, "%i" , etype->ip); |
1337 | break; |
1338 | } |
1339 | esize = get_arp_entry_size(card, qdata, type: etype, |
1340 | strip_entries: do_strip_entries); |
1341 | QETH_CARD_TEXT_(card, 5, "esz%i" , esize); |
1342 | if (!esize) |
1343 | break; |
1344 | |
1345 | if ((qinfo->udata_len - qinfo->udata_offset) < esize) { |
1346 | QETH_CARD_TEXT_(card, 4, "qaer3%i" , -ENOSPC); |
1347 | memset(qinfo->udata, 0, 4); |
1348 | return -ENOSPC; |
1349 | } |
1350 | |
1351 | memcpy(qinfo->udata + qinfo->udata_offset, |
1352 | &qdata->data + entrybytes_done + stripped_bytes, |
1353 | esize); |
1354 | entrybytes_done += esize + stripped_bytes; |
1355 | qinfo->udata_offset += esize; |
1356 | ++qinfo->no_entries; |
1357 | } |
1358 | /* check if all replies received ... */ |
1359 | if (cmd->data.setassparms.hdr.seq_no < |
1360 | cmd->data.setassparms.hdr.number_of_replies) |
1361 | return 1; |
1362 | QETH_CARD_TEXT_(card, 4, "nove%i" , qinfo->no_entries); |
1363 | memcpy(qinfo->udata, &qinfo->no_entries, 4); |
1364 | /* keep STRIP_ENTRIES flag so the user program can distinguish |
1365 | * stripped entries from normal ones */ |
1366 | if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) |
1367 | qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; |
1368 | memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); |
1369 | QETH_CARD_TEXT_(card, 4, "rc%i" , 0); |
1370 | return 0; |
1371 | } |
1372 | |
1373 | static int qeth_l3_query_arp_cache_info(struct qeth_card *card, |
1374 | enum qeth_prot_versions prot, |
1375 | struct qeth_arp_query_info *qinfo) |
1376 | { |
1377 | struct qeth_cmd_buffer *iob; |
1378 | struct qeth_ipa_cmd *cmd; |
1379 | int rc; |
1380 | |
1381 | QETH_CARD_TEXT_(card, 3, "qarpipv%i" , prot); |
1382 | |
1383 | iob = qeth_get_setassparms_cmd(card, ipa_func: IPA_ARP_PROCESSING, |
1384 | cmd_code: IPA_CMD_ASS_ARP_QUERY_INFO, |
1385 | SETASS_DATA_SIZEOF(query_arp), prot); |
1386 | if (!iob) |
1387 | return -ENOMEM; |
1388 | cmd = __ipa_cmd(iob); |
1389 | cmd->data.setassparms.data.query_arp.request_bits = 0x000F; |
1390 | rc = qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_arp_query_cb, qinfo); |
1391 | if (rc) |
1392 | QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n" , |
1393 | CARD_DEVID(card), rc); |
1394 | return rc; |
1395 | } |
1396 | |
1397 | static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) |
1398 | { |
1399 | struct qeth_arp_query_info qinfo = {0, }; |
1400 | int rc; |
1401 | |
1402 | QETH_CARD_TEXT(card, 3, "arpquery" ); |
1403 | |
1404 | if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ |
1405 | IPA_ARP_PROCESSING)) { |
1406 | QETH_CARD_TEXT(card, 3, "arpqnsup" ); |
1407 | rc = -EOPNOTSUPP; |
1408 | goto out; |
1409 | } |
1410 | /* get size of userspace buffer and mask_bits -> 6 bytes */ |
1411 | if (copy_from_user(to: &qinfo, from: udata, n: 6)) { |
1412 | rc = -EFAULT; |
1413 | goto out; |
1414 | } |
1415 | qinfo.udata = kzalloc(size: qinfo.udata_len, GFP_KERNEL); |
1416 | if (!qinfo.udata) { |
1417 | rc = -ENOMEM; |
1418 | goto out; |
1419 | } |
1420 | qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; |
1421 | rc = qeth_l3_query_arp_cache_info(card, prot: QETH_PROT_IPV4, qinfo: &qinfo); |
1422 | if (rc) { |
1423 | if (copy_to_user(to: udata, from: qinfo.udata, n: 4)) |
1424 | rc = -EFAULT; |
1425 | goto free_and_out; |
1426 | } |
1427 | if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { |
1428 | /* fails in case of GuestLAN QDIO mode */ |
1429 | qeth_l3_query_arp_cache_info(card, prot: QETH_PROT_IPV6, qinfo: &qinfo); |
1430 | } |
1431 | if (copy_to_user(to: udata, from: qinfo.udata, n: qinfo.udata_len)) { |
1432 | QETH_CARD_TEXT(card, 4, "qactf" ); |
1433 | rc = -EFAULT; |
1434 | goto free_and_out; |
1435 | } |
1436 | QETH_CARD_TEXT(card, 4, "qacts" ); |
1437 | |
1438 | free_and_out: |
1439 | kfree(objp: qinfo.udata); |
1440 | out: |
1441 | return rc; |
1442 | } |
1443 | |
1444 | static int qeth_l3_arp_modify_entry(struct qeth_card *card, |
1445 | struct qeth_arp_cache_entry *entry, |
1446 | enum qeth_arp_process_subcmds arp_cmd) |
1447 | { |
1448 | struct qeth_arp_cache_entry *cmd_entry; |
1449 | struct qeth_cmd_buffer *iob; |
1450 | int rc; |
1451 | |
1452 | if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) |
1453 | QETH_CARD_TEXT(card, 3, "arpadd" ); |
1454 | else |
1455 | QETH_CARD_TEXT(card, 3, "arpdel" ); |
1456 | |
1457 | /* |
1458 | * currently GuestLAN only supports the ARP assist function |
1459 | * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; |
1460 | * thus we say EOPNOTSUPP for this ARP function |
1461 | */ |
1462 | if (IS_VM_NIC(card)) |
1463 | return -EOPNOTSUPP; |
1464 | if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { |
1465 | return -EOPNOTSUPP; |
1466 | } |
1467 | |
1468 | iob = qeth_get_setassparms_cmd(card, ipa_func: IPA_ARP_PROCESSING, cmd_code: arp_cmd, |
1469 | SETASS_DATA_SIZEOF(arp_entry), |
1470 | prot: QETH_PROT_IPV4); |
1471 | if (!iob) |
1472 | return -ENOMEM; |
1473 | |
1474 | cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; |
1475 | ether_addr_copy(dst: cmd_entry->macaddr, src: entry->macaddr); |
1476 | memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); |
1477 | rc = qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_arp_cmd_cb, NULL); |
1478 | if (rc) |
1479 | QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n" , |
1480 | arp_cmd, CARD_DEVID(card), rc); |
1481 | return rc; |
1482 | } |
1483 | |
1484 | static int qeth_l3_arp_flush_cache(struct qeth_card *card) |
1485 | { |
1486 | struct qeth_cmd_buffer *iob; |
1487 | int rc; |
1488 | |
1489 | QETH_CARD_TEXT(card, 3, "arpflush" ); |
1490 | |
1491 | /* |
1492 | * currently GuestLAN only supports the ARP assist function |
1493 | * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; |
1494 | * thus we say EOPNOTSUPP for this ARP function |
1495 | */ |
1496 | if (IS_VM_NIC(card) || IS_IQD(card)) |
1497 | return -EOPNOTSUPP; |
1498 | if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { |
1499 | return -EOPNOTSUPP; |
1500 | } |
1501 | |
1502 | iob = qeth_get_setassparms_cmd(card, ipa_func: IPA_ARP_PROCESSING, |
1503 | cmd_code: IPA_CMD_ASS_ARP_FLUSH_CACHE, data_length: 0, |
1504 | prot: QETH_PROT_IPV4); |
1505 | if (!iob) |
1506 | return -ENOMEM; |
1507 | |
1508 | rc = qeth_send_ipa_cmd(card, iob, reply_cb: qeth_l3_arp_cmd_cb, NULL); |
1509 | if (rc) |
1510 | QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n" , |
1511 | CARD_DEVID(card), rc); |
1512 | return rc; |
1513 | } |
1514 | |
1515 | static int qeth_l3_ndo_siocdevprivate(struct net_device *dev, struct ifreq *rq, |
1516 | void __user *data, int cmd) |
1517 | { |
1518 | struct qeth_card *card = dev->ml_priv; |
1519 | struct qeth_arp_cache_entry arp_entry; |
1520 | enum qeth_arp_process_subcmds arp_cmd; |
1521 | int rc = 0; |
1522 | |
1523 | switch (cmd) { |
1524 | case SIOC_QETH_ARP_SET_NO_ENTRIES: |
1525 | if (!capable(CAP_NET_ADMIN)) { |
1526 | rc = -EPERM; |
1527 | break; |
1528 | } |
1529 | rc = qeth_l3_arp_set_no_entries(card, no_entries: rq->ifr_ifru.ifru_ivalue); |
1530 | break; |
1531 | case SIOC_QETH_ARP_QUERY_INFO: |
1532 | if (!capable(CAP_NET_ADMIN)) { |
1533 | rc = -EPERM; |
1534 | break; |
1535 | } |
1536 | rc = qeth_l3_arp_query(card, udata: data); |
1537 | break; |
1538 | case SIOC_QETH_ARP_ADD_ENTRY: |
1539 | case SIOC_QETH_ARP_REMOVE_ENTRY: |
1540 | if (!capable(CAP_NET_ADMIN)) |
1541 | return -EPERM; |
1542 | if (copy_from_user(to: &arp_entry, from: data, n: sizeof(arp_entry))) |
1543 | return -EFAULT; |
1544 | |
1545 | arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? |
1546 | IPA_CMD_ASS_ARP_ADD_ENTRY : |
1547 | IPA_CMD_ASS_ARP_REMOVE_ENTRY; |
1548 | return qeth_l3_arp_modify_entry(card, entry: &arp_entry, arp_cmd); |
1549 | case SIOC_QETH_ARP_FLUSH_CACHE: |
1550 | if (!capable(CAP_NET_ADMIN)) { |
1551 | rc = -EPERM; |
1552 | break; |
1553 | } |
1554 | rc = qeth_l3_arp_flush_cache(card); |
1555 | break; |
1556 | default: |
1557 | rc = qeth_siocdevprivate(dev, rq, data, cmd); |
1558 | } |
1559 | return rc; |
1560 | } |
1561 | |
1562 | static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst, |
1563 | __be16 proto) |
1564 | { |
1565 | struct neighbour *n = NULL; |
1566 | |
1567 | if (dst) |
1568 | n = dst_neigh_lookup_skb(dst, skb); |
1569 | |
1570 | if (n) { |
1571 | int cast_type = n->type; |
1572 | |
1573 | neigh_release(neigh: n); |
1574 | if ((cast_type == RTN_BROADCAST) || |
1575 | (cast_type == RTN_MULTICAST) || |
1576 | (cast_type == RTN_ANYCAST)) |
1577 | return cast_type; |
1578 | return RTN_UNICAST; |
1579 | } |
1580 | |
1581 | /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ |
1582 | switch (proto) { |
1583 | case htons(ETH_P_IP): |
1584 | if (ipv4_is_lbcast(addr: ip_hdr(skb)->daddr)) |
1585 | return RTN_BROADCAST; |
1586 | return ipv4_is_multicast(addr: ip_hdr(skb)->daddr) ? |
1587 | RTN_MULTICAST : RTN_UNICAST; |
1588 | case htons(ETH_P_IPV6): |
1589 | return ipv6_addr_is_multicast(addr: &ipv6_hdr(skb)->daddr) ? |
1590 | RTN_MULTICAST : RTN_UNICAST; |
1591 | case htons(ETH_P_AF_IUCV): |
1592 | return RTN_UNICAST; |
1593 | default: |
1594 | /* OSA only: ... and MAC address */ |
1595 | return qeth_get_ether_cast_type(skb); |
1596 | } |
1597 | } |
1598 | |
1599 | static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto) |
1600 | { |
1601 | struct dst_entry *dst; |
1602 | int cast_type; |
1603 | |
1604 | rcu_read_lock(); |
1605 | dst = qeth_dst_check_rcu(skb, proto); |
1606 | cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto); |
1607 | rcu_read_unlock(); |
1608 | |
1609 | return cast_type; |
1610 | } |
1611 | |
1612 | static u8 qeth_l3_cast_type_to_flag(int cast_type) |
1613 | { |
1614 | if (cast_type == RTN_MULTICAST) |
1615 | return QETH_CAST_MULTICAST; |
1616 | if (cast_type == RTN_ANYCAST) |
1617 | return QETH_CAST_ANYCAST; |
1618 | if (cast_type == RTN_BROADCAST) |
1619 | return QETH_CAST_BROADCAST; |
1620 | return QETH_CAST_UNICAST; |
1621 | } |
1622 | |
1623 | static void (struct qeth_qdio_out_q *queue, |
1624 | struct qeth_hdr *hdr, struct sk_buff *skb, |
1625 | __be16 proto, unsigned int data_len) |
1626 | { |
1627 | struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; |
1628 | struct vlan_ethhdr *veth = vlan_eth_hdr(skb); |
1629 | struct qeth_card *card = queue->card; |
1630 | struct dst_entry *dst; |
1631 | int cast_type; |
1632 | |
1633 | hdr->hdr.l3.length = data_len; |
1634 | |
1635 | if (skb_is_gso(skb)) { |
1636 | hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; |
1637 | } else { |
1638 | hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; |
1639 | |
1640 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
1641 | qeth_tx_csum(skb, flags: &hdr->hdr.l3.ext_flags, proto); |
1642 | /* some HW requires combined L3+L4 csum offload: */ |
1643 | if (proto == htons(ETH_P_IP)) |
1644 | hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; |
1645 | } |
1646 | } |
1647 | |
1648 | if (proto == htons(ETH_P_IP) || IS_IQD(card)) { |
1649 | /* NETIF_F_HW_VLAN_CTAG_TX */ |
1650 | if (skb_vlan_tag_present(skb)) { |
1651 | hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; |
1652 | hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); |
1653 | } |
1654 | } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { |
1655 | hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; |
1656 | hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); |
1657 | } |
1658 | |
1659 | rcu_read_lock(); |
1660 | dst = qeth_dst_check_rcu(skb, proto); |
1661 | |
1662 | if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ) |
1663 | cast_type = RTN_UNICAST; |
1664 | else |
1665 | cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto); |
1666 | l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type); |
1667 | |
1668 | switch (proto) { |
1669 | case htons(ETH_P_IP): |
1670 | l3_hdr->next_hop.addr.s6_addr32[3] = |
1671 | qeth_next_hop_v4_rcu(skb, dst); |
1672 | break; |
1673 | case htons(ETH_P_IPV6): |
1674 | l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst); |
1675 | |
1676 | hdr->hdr.l3.flags |= QETH_HDR_IPV6; |
1677 | if (!IS_IQD(card)) |
1678 | hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; |
1679 | break; |
1680 | case htons(ETH_P_AF_IUCV): |
1681 | l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80); |
1682 | memcpy(&l3_hdr->next_hop.addr.s6_addr32[2], |
1683 | iucv_trans_hdr(skb)->destUserID, 8); |
1684 | l3_hdr->flags |= QETH_HDR_IPV6; |
1685 | break; |
1686 | default: |
1687 | /* OSA only: */ |
1688 | l3_hdr->flags |= QETH_HDR_PASSTHRU; |
1689 | } |
1690 | rcu_read_unlock(); |
1691 | } |
1692 | |
1693 | static void (struct sk_buff *skb) |
1694 | { |
1695 | struct iphdr *iph = ip_hdr(skb); |
1696 | |
1697 | /* this is safe, IPv6 traffic takes a different path */ |
1698 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
1699 | iph->check = 0; |
1700 | if (skb_is_gso(skb)) { |
1701 | iph->tot_len = 0; |
1702 | tcp_hdr(skb)->check = ~tcp_v4_check(len: 0, saddr: iph->saddr, |
1703 | daddr: iph->daddr, base: 0); |
1704 | } |
1705 | } |
1706 | |
1707 | static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, |
1708 | struct qeth_qdio_out_q *queue, __be16 proto) |
1709 | { |
1710 | unsigned int hw_hdr_len; |
1711 | int rc; |
1712 | |
1713 | /* re-use the L2 header area for the HW header: */ |
1714 | hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : |
1715 | sizeof(struct qeth_hdr); |
1716 | rc = skb_cow_head(skb, headroom: hw_hdr_len - ETH_HLEN); |
1717 | if (rc) |
1718 | return rc; |
1719 | skb_pull(skb, ETH_HLEN); |
1720 | |
1721 | qeth_l3_fixup_headers(skb); |
1722 | return qeth_xmit(card, skb, queue, proto, fill_header: qeth_l3_fill_header); |
1723 | } |
1724 | |
1725 | static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, |
1726 | struct net_device *dev) |
1727 | { |
1728 | struct qeth_card *card = dev->ml_priv; |
1729 | __be16 proto = vlan_get_protocol(skb); |
1730 | u16 txq = skb_get_queue_mapping(skb); |
1731 | struct qeth_qdio_out_q *queue; |
1732 | int rc; |
1733 | |
1734 | if (!skb_is_gso(skb)) |
1735 | qdisc_skb_cb(skb)->pkt_len = skb->len; |
1736 | if (IS_IQD(card)) { |
1737 | queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)]; |
1738 | |
1739 | if (card->options.sniffer) |
1740 | goto tx_drop; |
1741 | |
1742 | switch (proto) { |
1743 | case htons(ETH_P_AF_IUCV): |
1744 | if (card->options.cq != QETH_CQ_ENABLED) |
1745 | goto tx_drop; |
1746 | break; |
1747 | case htons(ETH_P_IP): |
1748 | case htons(ETH_P_IPV6): |
1749 | if (card->options.cq == QETH_CQ_ENABLED) |
1750 | goto tx_drop; |
1751 | break; |
1752 | default: |
1753 | goto tx_drop; |
1754 | } |
1755 | } else { |
1756 | queue = card->qdio.out_qs[txq]; |
1757 | } |
1758 | |
1759 | if (!(dev->flags & IFF_BROADCAST) && |
1760 | qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST) |
1761 | goto tx_drop; |
1762 | |
1763 | if (proto == htons(ETH_P_IP) || IS_IQD(card)) |
1764 | rc = qeth_l3_xmit(card, skb, queue, proto); |
1765 | else |
1766 | rc = qeth_xmit(card, skb, queue, proto, fill_header: qeth_l3_fill_header); |
1767 | |
1768 | if (!rc) |
1769 | return NETDEV_TX_OK; |
1770 | |
1771 | tx_drop: |
1772 | QETH_TXQ_STAT_INC(queue, tx_dropped); |
1773 | kfree_skb(skb); |
1774 | return NETDEV_TX_OK; |
1775 | } |
1776 | |
1777 | static void qeth_l3_set_rx_mode(struct net_device *dev) |
1778 | { |
1779 | struct qeth_card *card = dev->ml_priv; |
1780 | |
1781 | schedule_work(work: &card->rx_mode_work); |
1782 | } |
1783 | |
1784 | /* |
1785 | * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting |
1786 | * NOARP on the netdevice is no option because it also turns off neighbor |
1787 | * solicitation. For IPv4 we install a neighbor_setup function. We don't want |
1788 | * arp resolution but we want the hard header (packet socket will work |
1789 | * e.g. tcpdump) |
1790 | */ |
1791 | static int qeth_l3_neigh_setup_noarp(struct neighbour *n) |
1792 | { |
1793 | n->nud_state = NUD_NOARP; |
1794 | memcpy(n->ha, "FAKELL" , 6); |
1795 | n->output = n->ops->connected_output; |
1796 | return 0; |
1797 | } |
1798 | |
1799 | static int |
1800 | qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) |
1801 | { |
1802 | if (np->tbl->family == AF_INET) |
1803 | np->neigh_setup = qeth_l3_neigh_setup_noarp; |
1804 | |
1805 | return 0; |
1806 | } |
1807 | |
1808 | static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, |
1809 | struct net_device *dev, |
1810 | netdev_features_t features) |
1811 | { |
1812 | if (vlan_get_protocol(skb) != htons(ETH_P_IP)) |
1813 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
1814 | return qeth_features_check(skb, dev, features); |
1815 | } |
1816 | |
1817 | static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, |
1818 | struct net_device *sb_dev) |
1819 | { |
1820 | __be16 proto = vlan_get_protocol(skb); |
1821 | |
1822 | return qeth_iqd_select_queue(dev, skb, |
1823 | cast_type: qeth_l3_get_cast_type(skb, proto), sb_dev); |
1824 | } |
1825 | |
1826 | static const struct net_device_ops qeth_l3_netdev_ops = { |
1827 | .ndo_open = qeth_open, |
1828 | .ndo_stop = qeth_stop, |
1829 | .ndo_get_stats64 = qeth_get_stats64, |
1830 | .ndo_start_xmit = qeth_l3_hard_start_xmit, |
1831 | .ndo_select_queue = qeth_l3_iqd_select_queue, |
1832 | .ndo_validate_addr = eth_validate_addr, |
1833 | .ndo_set_rx_mode = qeth_l3_set_rx_mode, |
1834 | .ndo_eth_ioctl = qeth_do_ioctl, |
1835 | .ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate, |
1836 | .ndo_fix_features = qeth_fix_features, |
1837 | .ndo_set_features = qeth_set_features, |
1838 | .ndo_tx_timeout = qeth_tx_timeout, |
1839 | }; |
1840 | |
1841 | static const struct net_device_ops qeth_l3_osa_netdev_ops = { |
1842 | .ndo_open = qeth_open, |
1843 | .ndo_stop = qeth_stop, |
1844 | .ndo_get_stats64 = qeth_get_stats64, |
1845 | .ndo_start_xmit = qeth_l3_hard_start_xmit, |
1846 | .ndo_features_check = qeth_l3_osa_features_check, |
1847 | .ndo_select_queue = qeth_osa_select_queue, |
1848 | .ndo_validate_addr = eth_validate_addr, |
1849 | .ndo_set_rx_mode = qeth_l3_set_rx_mode, |
1850 | .ndo_eth_ioctl = qeth_do_ioctl, |
1851 | .ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate, |
1852 | .ndo_fix_features = qeth_fix_features, |
1853 | .ndo_set_features = qeth_set_features, |
1854 | .ndo_tx_timeout = qeth_tx_timeout, |
1855 | .ndo_neigh_setup = qeth_l3_neigh_setup, |
1856 | }; |
1857 | |
1858 | static int qeth_l3_setup_netdev(struct qeth_card *card) |
1859 | { |
1860 | struct net_device *dev = card->dev; |
1861 | unsigned int headroom; |
1862 | int rc; |
1863 | |
1864 | if (IS_OSD(card) || IS_OSX(card)) { |
1865 | card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; |
1866 | |
1867 | /*IPv6 address autoconfiguration stuff*/ |
1868 | dev->dev_id = qeth_l3_get_unique_id(card, uid: dev->dev_id); |
1869 | |
1870 | if (!IS_VM_NIC(card)) { |
1871 | card->dev->features |= NETIF_F_SG; |
1872 | card->dev->hw_features |= NETIF_F_TSO | |
1873 | NETIF_F_RXCSUM | NETIF_F_IP_CSUM; |
1874 | card->dev->vlan_features |= NETIF_F_TSO | |
1875 | NETIF_F_RXCSUM | NETIF_F_IP_CSUM; |
1876 | } |
1877 | |
1878 | if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { |
1879 | card->dev->hw_features |= NETIF_F_IPV6_CSUM; |
1880 | card->dev->vlan_features |= NETIF_F_IPV6_CSUM; |
1881 | } |
1882 | if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { |
1883 | card->dev->hw_features |= NETIF_F_TSO6; |
1884 | card->dev->vlan_features |= NETIF_F_TSO6; |
1885 | } |
1886 | |
1887 | /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ |
1888 | if (card->dev->hw_features & NETIF_F_TSO6) |
1889 | headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; |
1890 | else if (card->dev->hw_features & NETIF_F_TSO) |
1891 | headroom = sizeof(struct qeth_hdr_tso); |
1892 | else |
1893 | headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; |
1894 | } else if (IS_IQD(card)) { |
1895 | card->dev->flags |= IFF_NOARP; |
1896 | card->dev->netdev_ops = &qeth_l3_netdev_ops; |
1897 | headroom = sizeof(struct qeth_hdr) - ETH_HLEN; |
1898 | |
1899 | rc = qeth_l3_iqd_read_initial_mac(card); |
1900 | if (rc) |
1901 | return rc; |
1902 | } else |
1903 | return -ENODEV; |
1904 | |
1905 | card->dev->needed_headroom = headroom; |
1906 | card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | |
1907 | NETIF_F_HW_VLAN_CTAG_RX; |
1908 | |
1909 | netif_keep_dst(dev: card->dev); |
1910 | if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) |
1911 | netif_set_tso_max_size(dev: card->dev, |
1912 | PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); |
1913 | |
1914 | netif_napi_add(dev: card->dev, napi: &card->napi, poll: qeth_poll); |
1915 | return register_netdev(dev: card->dev); |
1916 | } |
1917 | |
1918 | static const struct device_type qeth_l3_devtype = { |
1919 | .name = "qeth_layer3" , |
1920 | .groups = qeth_l3_attr_groups, |
1921 | }; |
1922 | |
1923 | static int qeth_l3_probe_device(struct ccwgroup_device *gdev) |
1924 | { |
1925 | struct qeth_card *card = dev_get_drvdata(dev: &gdev->dev); |
1926 | int rc; |
1927 | |
1928 | hash_init(card->ip_htable); |
1929 | mutex_init(&card->ip_lock); |
1930 | card->cmd_wq = alloc_ordered_workqueue("%s_cmd" , 0, |
1931 | dev_name(&gdev->dev)); |
1932 | if (!card->cmd_wq) |
1933 | return -ENOMEM; |
1934 | |
1935 | if (gdev->dev.type) { |
1936 | rc = device_add_groups(dev: &gdev->dev, groups: qeth_l3_attr_groups); |
1937 | if (rc) { |
1938 | destroy_workqueue(wq: card->cmd_wq); |
1939 | return rc; |
1940 | } |
1941 | } else { |
1942 | gdev->dev.type = &qeth_l3_devtype; |
1943 | } |
1944 | |
1945 | INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work); |
1946 | return 0; |
1947 | } |
1948 | |
1949 | static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) |
1950 | { |
1951 | struct qeth_card *card = dev_get_drvdata(dev: &cgdev->dev); |
1952 | |
1953 | if (cgdev->dev.type != &qeth_l3_devtype) |
1954 | device_remove_groups(dev: &cgdev->dev, groups: qeth_l3_attr_groups); |
1955 | |
1956 | qeth_set_allowed_threads(card, threads: 0, clear_start_mask: 1); |
1957 | wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); |
1958 | |
1959 | if (cgdev->state == CCWGROUP_ONLINE) |
1960 | qeth_set_offline(card, disc: card->discipline, resetting: false); |
1961 | |
1962 | if (card->dev->reg_state == NETREG_REGISTERED) |
1963 | unregister_netdev(dev: card->dev); |
1964 | |
1965 | destroy_workqueue(wq: card->cmd_wq); |
1966 | qeth_l3_clear_ip_htable(card, recover: 0); |
1967 | qeth_l3_clear_ipato_list(card); |
1968 | } |
1969 | |
1970 | static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok) |
1971 | { |
1972 | struct net_device *dev = card->dev; |
1973 | int rc = 0; |
1974 | |
1975 | /* softsetup */ |
1976 | QETH_CARD_TEXT(card, 2, "softsetp" ); |
1977 | |
1978 | rc = qeth_l3_setadapter_parms(card); |
1979 | if (rc) |
1980 | QETH_CARD_TEXT_(card, 2, "2err%04x" , rc); |
1981 | if (!card->options.sniffer) { |
1982 | qeth_l3_start_ipassists(card); |
1983 | |
1984 | rc = qeth_l3_setrouting_v4(card); |
1985 | if (rc) |
1986 | QETH_CARD_TEXT_(card, 2, "4err%04x" , rc); |
1987 | rc = qeth_l3_setrouting_v6(card); |
1988 | if (rc) |
1989 | QETH_CARD_TEXT_(card, 2, "5err%04x" , rc); |
1990 | } |
1991 | |
1992 | card->state = CARD_STATE_SOFTSETUP; |
1993 | |
1994 | qeth_set_allowed_threads(card, threads: 0xffffffff, clear_start_mask: 0); |
1995 | qeth_l3_recover_ip(card); |
1996 | |
1997 | if (dev->reg_state != NETREG_REGISTERED) { |
1998 | rc = qeth_l3_setup_netdev(card); |
1999 | if (rc) |
2000 | goto err_setup; |
2001 | |
2002 | if (carrier_ok) |
2003 | netif_carrier_on(dev); |
2004 | } else { |
2005 | rtnl_lock(); |
2006 | rc = qeth_set_real_num_tx_queues(card, |
2007 | count: qeth_tx_actual_queues(card)); |
2008 | if (rc) { |
2009 | rtnl_unlock(); |
2010 | goto err_set_queues; |
2011 | } |
2012 | |
2013 | if (carrier_ok) |
2014 | netif_carrier_on(dev); |
2015 | else |
2016 | netif_carrier_off(dev); |
2017 | |
2018 | netif_device_attach(dev); |
2019 | qeth_enable_hw_features(dev); |
2020 | |
2021 | if (netif_running(dev)) { |
2022 | local_bh_disable(); |
2023 | napi_schedule(n: &card->napi); |
2024 | /* kick-start the NAPI softirq: */ |
2025 | local_bh_enable(); |
2026 | } |
2027 | rtnl_unlock(); |
2028 | } |
2029 | return 0; |
2030 | |
2031 | err_set_queues: |
2032 | err_setup: |
2033 | qeth_set_allowed_threads(card, threads: 0, clear_start_mask: 1); |
2034 | card->state = CARD_STATE_DOWN; |
2035 | qeth_l3_clear_ip_htable(card, recover: 1); |
2036 | return rc; |
2037 | } |
2038 | |
2039 | static void qeth_l3_set_offline(struct qeth_card *card) |
2040 | { |
2041 | qeth_set_allowed_threads(card, threads: 0, clear_start_mask: 1); |
2042 | qeth_l3_drain_rx_mode_cache(card); |
2043 | |
2044 | if (card->options.sniffer && |
2045 | (card->info.promisc_mode == SET_PROMISC_MODE_ON)) |
2046 | qeth_diags_trace(card, diags_cmd: QETH_DIAGS_CMD_TRACE_DISABLE); |
2047 | |
2048 | if (card->state == CARD_STATE_SOFTSETUP) { |
2049 | card->state = CARD_STATE_DOWN; |
2050 | qeth_l3_clear_ip_htable(card, recover: 1); |
2051 | } |
2052 | } |
2053 | |
2054 | /* Returns zero if the command is successfully "consumed" */ |
2055 | static int qeth_l3_control_event(struct qeth_card *card, |
2056 | struct qeth_ipa_cmd *cmd) |
2057 | { |
2058 | return 1; |
2059 | } |
2060 | |
2061 | const struct qeth_discipline qeth_l3_discipline = { |
2062 | .setup = qeth_l3_probe_device, |
2063 | .remove = qeth_l3_remove_device, |
2064 | .set_online = qeth_l3_set_online, |
2065 | .set_offline = qeth_l3_set_offline, |
2066 | .control_event_handler = qeth_l3_control_event, |
2067 | }; |
2068 | EXPORT_SYMBOL_GPL(qeth_l3_discipline); |
2069 | |
2070 | static int qeth_l3_handle_ip_event(struct qeth_card *card, |
2071 | struct qeth_ipaddr *addr, |
2072 | unsigned long event) |
2073 | { |
2074 | switch (event) { |
2075 | case NETDEV_UP: |
2076 | qeth_l3_modify_ip(card, addr, add: true); |
2077 | return NOTIFY_OK; |
2078 | case NETDEV_DOWN: |
2079 | qeth_l3_modify_ip(card, addr, add: false); |
2080 | return NOTIFY_OK; |
2081 | default: |
2082 | return NOTIFY_DONE; |
2083 | } |
2084 | } |
2085 | |
2086 | struct qeth_l3_ip_event_work { |
2087 | struct work_struct work; |
2088 | struct qeth_card *card; |
2089 | struct qeth_ipaddr addr; |
2090 | }; |
2091 | |
2092 | #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work) |
2093 | |
2094 | static void qeth_l3_add_ip_worker(struct work_struct *work) |
2095 | { |
2096 | struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); |
2097 | |
2098 | qeth_l3_modify_ip(card: ip_work->card, addr: &ip_work->addr, add: true); |
2099 | kfree(objp: work); |
2100 | } |
2101 | |
2102 | static void qeth_l3_delete_ip_worker(struct work_struct *work) |
2103 | { |
2104 | struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); |
2105 | |
2106 | qeth_l3_modify_ip(card: ip_work->card, addr: &ip_work->addr, add: false); |
2107 | kfree(objp: work); |
2108 | } |
2109 | |
2110 | static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) |
2111 | { |
2112 | if (is_vlan_dev(dev)) |
2113 | dev = vlan_dev_real_dev(dev); |
2114 | if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || |
2115 | dev->netdev_ops == &qeth_l3_netdev_ops) |
2116 | return (struct qeth_card *) dev->ml_priv; |
2117 | return NULL; |
2118 | } |
2119 | |
2120 | static int qeth_l3_ip_event(struct notifier_block *this, |
2121 | unsigned long event, void *ptr) |
2122 | { |
2123 | struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; |
2124 | struct net_device *dev = ifa->ifa_dev->dev; |
2125 | struct qeth_ipaddr addr; |
2126 | struct qeth_card *card; |
2127 | |
2128 | card = qeth_l3_get_card_from_dev(dev); |
2129 | if (!card) |
2130 | return NOTIFY_DONE; |
2131 | QETH_CARD_TEXT(card, 3, "ipevent" ); |
2132 | |
2133 | qeth_l3_init_ipaddr(addr: &addr, type: QETH_IP_TYPE_NORMAL, proto: QETH_PROT_IPV4); |
2134 | addr.u.a4.addr = ifa->ifa_address; |
2135 | addr.u.a4.mask = ifa->ifa_mask; |
2136 | |
2137 | return qeth_l3_handle_ip_event(card, addr: &addr, event); |
2138 | } |
2139 | |
2140 | static struct notifier_block qeth_l3_ip_notifier = { |
2141 | qeth_l3_ip_event, |
2142 | NULL, |
2143 | }; |
2144 | |
2145 | static int qeth_l3_ip6_event(struct notifier_block *this, |
2146 | unsigned long event, void *ptr) |
2147 | { |
2148 | struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; |
2149 | struct net_device *dev = ifa->idev->dev; |
2150 | struct qeth_l3_ip_event_work *ip_work; |
2151 | struct qeth_card *card; |
2152 | |
2153 | if (event != NETDEV_UP && event != NETDEV_DOWN) |
2154 | return NOTIFY_DONE; |
2155 | |
2156 | card = qeth_l3_get_card_from_dev(dev); |
2157 | if (!card) |
2158 | return NOTIFY_DONE; |
2159 | QETH_CARD_TEXT(card, 3, "ip6event" ); |
2160 | if (!qeth_is_supported(card, IPA_IPV6)) |
2161 | return NOTIFY_DONE; |
2162 | |
2163 | ip_work = kmalloc(size: sizeof(*ip_work), GFP_ATOMIC); |
2164 | if (!ip_work) |
2165 | return NOTIFY_DONE; |
2166 | |
2167 | if (event == NETDEV_UP) |
2168 | INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker); |
2169 | else |
2170 | INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker); |
2171 | |
2172 | ip_work->card = card; |
2173 | qeth_l3_init_ipaddr(addr: &ip_work->addr, type: QETH_IP_TYPE_NORMAL, |
2174 | proto: QETH_PROT_IPV6); |
2175 | ip_work->addr.u.a6.addr = ifa->addr; |
2176 | ip_work->addr.u.a6.pfxlen = ifa->prefix_len; |
2177 | |
2178 | queue_work(wq: card->cmd_wq, work: &ip_work->work); |
2179 | return NOTIFY_OK; |
2180 | } |
2181 | |
2182 | static struct notifier_block qeth_l3_ip6_notifier = { |
2183 | qeth_l3_ip6_event, |
2184 | NULL, |
2185 | }; |
2186 | |
2187 | static int qeth_l3_register_notifiers(void) |
2188 | { |
2189 | int rc; |
2190 | |
2191 | QETH_DBF_TEXT(SETUP, 5, "regnotif" ); |
2192 | rc = register_inetaddr_notifier(nb: &qeth_l3_ip_notifier); |
2193 | if (rc) |
2194 | return rc; |
2195 | rc = register_inet6addr_notifier(nb: &qeth_l3_ip6_notifier); |
2196 | if (rc) { |
2197 | unregister_inetaddr_notifier(nb: &qeth_l3_ip_notifier); |
2198 | return rc; |
2199 | } |
2200 | return 0; |
2201 | } |
2202 | |
2203 | static void qeth_l3_unregister_notifiers(void) |
2204 | { |
2205 | QETH_DBF_TEXT(SETUP, 5, "unregnot" ); |
2206 | WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); |
2207 | WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); |
2208 | } |
2209 | |
2210 | static int __init qeth_l3_init(void) |
2211 | { |
2212 | pr_info("register layer 3 discipline\n" ); |
2213 | return qeth_l3_register_notifiers(); |
2214 | } |
2215 | |
2216 | static void __exit qeth_l3_exit(void) |
2217 | { |
2218 | qeth_l3_unregister_notifiers(); |
2219 | pr_info("unregister layer 3 discipline\n" ); |
2220 | } |
2221 | |
2222 | module_init(qeth_l3_init); |
2223 | module_exit(qeth_l3_exit); |
2224 | MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>" ); |
2225 | MODULE_DESCRIPTION("qeth layer 3 discipline" ); |
2226 | MODULE_LICENSE("GPL" ); |
2227 | |