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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/ipv6.h>
23#include <linux/inetdevice.h>
24#include <linux/igmp.h>
25#include <linux/slab.h>
26#include <linux/if_ether.h>
27#include <linux/if_vlan.h>
28#include <linux/skbuff.h>
29
30#include <net/ip.h>
31#include <net/arp.h>
32#include <net/route.h>
33#include <net/ipv6.h>
34#include <net/ip6_route.h>
35#include <net/iucv/af_iucv.h>
36#include <linux/hashtable.h>
37
38#include "qeth_l3.h"
39
40static int qeth_l3_register_addr_entry(struct qeth_card *,
41 struct qeth_ipaddr *);
42static int qeth_l3_deregister_addr_entry(struct qeth_card *,
43 struct qeth_ipaddr *);
44
45int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,
46 char *buf)
47{
48 if (proto == QETH_PROT_IPV4)
49 return sprintf(buf, "%pI4", addr);
50 else
51 return sprintf(buf, "%pI6", addr);
52}
53
54static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
55 struct qeth_ipaddr *query)
56{
57 u32 key = qeth_l3_ipaddr_hash(query);
58 struct qeth_ipaddr *addr;
59
60 if (query->is_multicast) {
61 hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key)
62 if (qeth_l3_addr_match_ip(addr, query))
63 return addr;
64 } else {
65 hash_for_each_possible(card->ip_htable, addr, hnode, key)
66 if (qeth_l3_addr_match_ip(addr, query))
67 return addr;
68 }
69 return NULL;
70}
71
72static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
73{
74 int i, j;
75 u8 octet;
76
77 for (i = 0; i < len; ++i) {
78 octet = addr[i];
79 for (j = 7; j >= 0; --j) {
80 bits[i*8 + j] = octet & 1;
81 octet >>= 1;
82 }
83 }
84}
85
86static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
87 struct qeth_ipaddr *addr)
88{
89 struct qeth_ipato_entry *ipatoe;
90 u8 addr_bits[128] = {0, };
91 u8 ipatoe_bits[128] = {0, };
92 int rc = 0;
93
94 if (!card->ipato.enabled)
95 return false;
96 if (addr->type != QETH_IP_TYPE_NORMAL)
97 return false;
98
99 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
100 (addr->proto == QETH_PROT_IPV4) ? 4 : 16);
101 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
102 if (addr->proto != ipatoe->proto)
103 continue;
104 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
105 (ipatoe->proto == QETH_PROT_IPV4) ?
106 4 : 16);
107 rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits);
108 if (rc)
109 break;
110 }
111
112 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
113 rc = !rc;
114 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
115 rc = !rc;
116
117 return rc;
118}
119
120static int qeth_l3_delete_ip(struct qeth_card *card,
121 struct qeth_ipaddr *tmp_addr)
122{
123 int rc = 0;
124 struct qeth_ipaddr *addr;
125
126 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
127 QETH_CARD_TEXT(card, 2, "delrxip");
128 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
129 QETH_CARD_TEXT(card, 2, "delvipa");
130 else
131 QETH_CARD_TEXT(card, 2, "delip");
132
133 if (tmp_addr->proto == QETH_PROT_IPV4)
134 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
135 else {
136 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
137 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
138 }
139
140 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
141 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
142 return -ENOENT;
143
144 addr->ref_counter--;
145 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
146 return rc;
147
148 if (qeth_card_hw_is_reachable(card))
149 rc = qeth_l3_deregister_addr_entry(card, addr);
150
151 hash_del(&addr->hnode);
152 kfree(addr);
153
154 return rc;
155}
156
157static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
158{
159 int rc = 0;
160 struct qeth_ipaddr *addr;
161 char buf[40];
162
163 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
164 QETH_CARD_TEXT(card, 2, "addrxip");
165 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
166 QETH_CARD_TEXT(card, 2, "addvipa");
167 else
168 QETH_CARD_TEXT(card, 2, "addip");
169
170 if (tmp_addr->proto == QETH_PROT_IPV4)
171 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
172 else {
173 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
174 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
175 }
176
177 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
178 if (addr) {
179 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
180 return -EADDRINUSE;
181 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
182 addr->ref_counter++;
183 return 0;
184 }
185 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
186 buf);
187 dev_warn(&card->gdev->dev,
188 "Registering IP address %s failed\n", buf);
189 return -EADDRINUSE;
190 } else {
191 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
192 if (!addr)
193 return -ENOMEM;
194
195 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
196 QETH_CARD_TEXT(card, 2, "tkovaddr");
197 addr->ipato = 1;
198 }
199 hash_add(card->ip_htable, &addr->hnode,
200 qeth_l3_ipaddr_hash(addr));
201
202 if (!qeth_card_hw_is_reachable(card)) {
203 addr->disp_flag = QETH_DISP_ADDR_ADD;
204 return 0;
205 }
206
207 rc = qeth_l3_register_addr_entry(card, addr);
208
209 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
210 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
211 } else {
212 hash_del(&addr->hnode);
213 kfree(addr);
214 }
215 }
216 return rc;
217}
218
219static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
220 bool add)
221{
222 int rc;
223
224 mutex_lock(&card->ip_lock);
225 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
226 mutex_unlock(&card->ip_lock);
227
228 return rc;
229}
230
231static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
232{
233 struct qeth_ipaddr *addr;
234 struct hlist_node *tmp;
235 int i;
236
237 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
238 hash_del(&addr->hnode);
239 kfree(addr);
240 }
241}
242
243static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
244{
245 struct qeth_ipaddr *addr;
246 struct hlist_node *tmp;
247 int i;
248
249 QETH_CARD_TEXT(card, 4, "clearip");
250
251 mutex_lock(&card->ip_lock);
252
253 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
254 if (!recover) {
255 hash_del(&addr->hnode);
256 kfree(addr);
257 continue;
258 }
259 addr->disp_flag = QETH_DISP_ADDR_ADD;
260 }
261
262 mutex_unlock(&card->ip_lock);
263}
264
265static void qeth_l3_recover_ip(struct qeth_card *card)
266{
267 struct qeth_ipaddr *addr;
268 struct hlist_node *tmp;
269 int i;
270 int rc;
271
272 QETH_CARD_TEXT(card, 4, "recovrip");
273
274 mutex_lock(&card->ip_lock);
275
276 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
277 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
278 rc = qeth_l3_register_addr_entry(card, addr);
279
280 if (!rc) {
281 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
282 } else {
283 hash_del(&addr->hnode);
284 kfree(addr);
285 }
286 }
287 }
288
289 mutex_unlock(&card->ip_lock);
290}
291
292static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
293 unsigned long data)
294{
295 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
296
297 switch (cmd->hdr.return_code) {
298 case IPA_RC_SUCCESS:
299 return 0;
300 case IPA_RC_DUPLICATE_IP_ADDRESS:
301 return -EADDRINUSE;
302 case IPA_RC_MC_ADDR_NOT_FOUND:
303 return -ENOENT;
304 case IPA_RC_LAN_OFFLINE:
305 return -ENETDOWN;
306 default:
307 return -EIO;
308 }
309}
310
311static int qeth_l3_send_setdelmc(struct qeth_card *card,
312 struct qeth_ipaddr *addr,
313 enum qeth_ipa_cmds ipacmd)
314{
315 struct qeth_cmd_buffer *iob;
316 struct qeth_ipa_cmd *cmd;
317
318 QETH_CARD_TEXT(card, 4, "setdelmc");
319
320 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
321 IPA_DATA_SIZEOF(setdelipm));
322 if (!iob)
323 return -ENOMEM;
324 cmd = __ipa_cmd(iob);
325 if (addr->proto == QETH_PROT_IPV6) {
326 cmd->data.setdelipm.ip = addr->u.a6.addr;
327 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
328 } else {
329 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
330 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
331 }
332
333 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
334}
335
336static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len)
337{
338 unsigned int i = 0;
339
340 while (len && i < 4) {
341 int mask_len = min_t(int, len, 32);
342
343 prefix->s6_addr32[i] = inet_make_mask(mask_len);
344 len -= mask_len;
345 i++;
346 }
347}
348
349static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
350{
351 switch (addr->type) {
352 case QETH_IP_TYPE_RXIP:
353 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
354 case QETH_IP_TYPE_VIPA:
355 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
356 QETH_IPA_DELIP_VIPA_FLAG;
357 default:
358 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
359 }
360}
361
362static int qeth_l3_send_setdelip(struct qeth_card *card,
363 struct qeth_ipaddr *addr,
364 enum qeth_ipa_cmds ipacmd)
365{
366 struct qeth_cmd_buffer *iob;
367 struct qeth_ipa_cmd *cmd;
368 u32 flags;
369
370 QETH_CARD_TEXT(card, 4, "setdelip");
371
372 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
373 IPA_DATA_SIZEOF(setdelip6));
374 if (!iob)
375 return -ENOMEM;
376 cmd = __ipa_cmd(iob);
377
378 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
379 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
380
381 if (addr->proto == QETH_PROT_IPV6) {
382 cmd->data.setdelip6.addr = addr->u.a6.addr;
383 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix,
384 addr->u.a6.pfxlen);
385 cmd->data.setdelip6.flags = flags;
386 } else {
387 cmd->data.setdelip4.addr = addr->u.a4.addr;
388 cmd->data.setdelip4.mask = addr->u.a4.mask;
389 cmd->data.setdelip4.flags = flags;
390 }
391
392 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
393}
394
395static int qeth_l3_send_setrouting(struct qeth_card *card,
396 enum qeth_routing_types type, enum qeth_prot_versions prot)
397{
398 int rc;
399 struct qeth_ipa_cmd *cmd;
400 struct qeth_cmd_buffer *iob;
401
402 QETH_CARD_TEXT(card, 4, "setroutg");
403 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
404 IPA_DATA_SIZEOF(setrtg));
405 if (!iob)
406 return -ENOMEM;
407 cmd = __ipa_cmd(iob);
408 cmd->data.setrtg.type = (type);
409 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
410
411 return rc;
412}
413
414static int qeth_l3_correct_routing_type(struct qeth_card *card,
415 enum qeth_routing_types *type, enum qeth_prot_versions prot)
416{
417 if (IS_IQD(card)) {
418 switch (*type) {
419 case NO_ROUTER:
420 case PRIMARY_CONNECTOR:
421 case SECONDARY_CONNECTOR:
422 case MULTICAST_ROUTER:
423 return 0;
424 default:
425 goto out_inval;
426 }
427 } else {
428 switch (*type) {
429 case NO_ROUTER:
430 case PRIMARY_ROUTER:
431 case SECONDARY_ROUTER:
432 return 0;
433 case MULTICAST_ROUTER:
434 if (qeth_is_ipafunc_supported(card, prot,
435 IPA_OSA_MC_ROUTER))
436 return 0;
437 goto out_inval;
438 default:
439 goto out_inval;
440 }
441 }
442out_inval:
443 *type = NO_ROUTER;
444 return -EINVAL;
445}
446
447int qeth_l3_setrouting_v4(struct qeth_card *card)
448{
449 int rc;
450
451 QETH_CARD_TEXT(card, 3, "setrtg4");
452
453 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
454 QETH_PROT_IPV4);
455 if (rc)
456 return rc;
457
458 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
459 QETH_PROT_IPV4);
460 if (rc) {
461 card->options.route4.type = NO_ROUTER;
462 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
463 rc, CARD_DEVID(card));
464 }
465 return rc;
466}
467
468int qeth_l3_setrouting_v6(struct qeth_card *card)
469{
470 int rc = 0;
471
472 QETH_CARD_TEXT(card, 3, "setrtg6");
473
474 if (!qeth_is_supported(card, IPA_IPV6))
475 return 0;
476 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
477 QETH_PROT_IPV6);
478 if (rc)
479 return rc;
480
481 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
482 QETH_PROT_IPV6);
483 if (rc) {
484 card->options.route6.type = NO_ROUTER;
485 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
486 rc, CARD_DEVID(card));
487 }
488 return rc;
489}
490
491
492
493
494
495
496
497
498
499
500void qeth_l3_update_ipato(struct qeth_card *card)
501{
502 struct qeth_ipaddr *addr;
503 unsigned int i;
504
505 hash_for_each(card->ip_htable, i, addr, hnode) {
506 if (addr->type != QETH_IP_TYPE_NORMAL)
507 continue;
508 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
509 }
510}
511
512static void qeth_l3_clear_ipato_list(struct qeth_card *card)
513{
514 struct qeth_ipato_entry *ipatoe, *tmp;
515
516 mutex_lock(&card->ip_lock);
517
518 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
519 list_del(&ipatoe->entry);
520 kfree(ipatoe);
521 }
522
523 qeth_l3_update_ipato(card);
524 mutex_unlock(&card->ip_lock);
525}
526
527int qeth_l3_add_ipato_entry(struct qeth_card *card,
528 struct qeth_ipato_entry *new)
529{
530 struct qeth_ipato_entry *ipatoe;
531 int rc = 0;
532
533 QETH_CARD_TEXT(card, 2, "addipato");
534
535 mutex_lock(&card->ip_lock);
536
537 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
538 if (ipatoe->proto != new->proto)
539 continue;
540 if (!memcmp(ipatoe->addr, new->addr,
541 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) &&
542 (ipatoe->mask_bits == new->mask_bits)) {
543 rc = -EEXIST;
544 break;
545 }
546 }
547
548 if (!rc) {
549 list_add_tail(&new->entry, &card->ipato.entries);
550 qeth_l3_update_ipato(card);
551 }
552
553 mutex_unlock(&card->ip_lock);
554
555 return rc;
556}
557
558int qeth_l3_del_ipato_entry(struct qeth_card *card,
559 enum qeth_prot_versions proto, u8 *addr,
560 unsigned int mask_bits)
561{
562 struct qeth_ipato_entry *ipatoe, *tmp;
563 int rc = -ENOENT;
564
565 QETH_CARD_TEXT(card, 2, "delipato");
566
567 mutex_lock(&card->ip_lock);
568
569 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
570 if (ipatoe->proto != proto)
571 continue;
572 if (!memcmp(ipatoe->addr, addr,
573 (proto == QETH_PROT_IPV4) ? 4 : 16) &&
574 (ipatoe->mask_bits == mask_bits)) {
575 list_del(&ipatoe->entry);
576 qeth_l3_update_ipato(card);
577 kfree(ipatoe);
578 rc = 0;
579 }
580 }
581
582 mutex_unlock(&card->ip_lock);
583
584 return rc;
585}
586
587int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
588 enum qeth_ip_types type,
589 enum qeth_prot_versions proto)
590{
591 struct qeth_ipaddr addr;
592
593 qeth_l3_init_ipaddr(&addr, type, proto);
594 if (proto == QETH_PROT_IPV4)
595 memcpy(&addr.u.a4.addr, ip, 4);
596 else
597 memcpy(&addr.u.a6.addr, ip, 16);
598
599 return qeth_l3_modify_ip(card, &addr, add);
600}
601
602int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
603{
604 struct qeth_ipaddr addr;
605 unsigned int i;
606
607 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
608 addr.u.a6.addr.s6_addr[0] = 0xfe;
609 addr.u.a6.addr.s6_addr[1] = 0x80;
610 for (i = 0; i < 8; i++)
611 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
612
613 return qeth_l3_modify_ip(card, &addr, add);
614}
615
616static int qeth_l3_register_addr_entry(struct qeth_card *card,
617 struct qeth_ipaddr *addr)
618{
619 char buf[50];
620 int rc = 0;
621 int cnt = 3;
622
623 if (card->options.sniffer)
624 return 0;
625
626 if (addr->proto == QETH_PROT_IPV4) {
627 QETH_CARD_TEXT(card, 2, "setaddr4");
628 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
629 } else if (addr->proto == QETH_PROT_IPV6) {
630 QETH_CARD_TEXT(card, 2, "setaddr6");
631 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
632 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
633 } else {
634 QETH_CARD_TEXT(card, 2, "setaddr?");
635 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
636 }
637 do {
638 if (addr->is_multicast)
639 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
640 else
641 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
642 if (rc)
643 QETH_CARD_TEXT(card, 2, "failed");
644 } while ((--cnt > 0) && rc);
645 if (rc) {
646 QETH_CARD_TEXT(card, 2, "FAILED");
647 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
648 dev_warn(&card->gdev->dev,
649 "Registering IP address %s failed\n", buf);
650 }
651 return rc;
652}
653
654static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
655 struct qeth_ipaddr *addr)
656{
657 int rc = 0;
658
659 if (card->options.sniffer)
660 return 0;
661
662 if (addr->proto == QETH_PROT_IPV4) {
663 QETH_CARD_TEXT(card, 2, "deladdr4");
664 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
665 } else if (addr->proto == QETH_PROT_IPV6) {
666 QETH_CARD_TEXT(card, 2, "deladdr6");
667 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
668 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
669 } else {
670 QETH_CARD_TEXT(card, 2, "deladdr?");
671 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
672 }
673 if (addr->is_multicast)
674 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
675 else
676 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
677 if (rc)
678 QETH_CARD_TEXT(card, 2, "failed");
679
680 return rc;
681}
682
683static int qeth_l3_setadapter_parms(struct qeth_card *card)
684{
685 int rc = 0;
686
687 QETH_CARD_TEXT(card, 2, "setadprm");
688
689 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
690 rc = qeth_setadpparms_change_macaddr(card);
691 if (rc)
692 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
693 " address failed\n");
694 }
695
696 return rc;
697}
698
699static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
700{
701 int rc;
702
703 QETH_CARD_TEXT(card, 3, "ipaarp");
704
705 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
706 dev_info(&card->gdev->dev,
707 "ARP processing not supported on %s!\n",
708 netdev_name(card->dev));
709 return 0;
710 }
711 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
712 IPA_CMD_ASS_START, NULL);
713 if (rc) {
714 dev_warn(&card->gdev->dev,
715 "Starting ARP processing support for %s failed\n",
716 netdev_name(card->dev));
717 }
718 return rc;
719}
720
721static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
722{
723 int rc;
724
725 QETH_CARD_TEXT(card, 3, "stsrcmac");
726
727 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
728 dev_info(&card->gdev->dev,
729 "Inbound source MAC-address not supported on %s\n",
730 netdev_name(card->dev));
731 return -EOPNOTSUPP;
732 }
733
734 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
735 IPA_CMD_ASS_START, NULL);
736 if (rc)
737 dev_warn(&card->gdev->dev,
738 "Starting source MAC-address support for %s failed\n",
739 netdev_name(card->dev));
740 return rc;
741}
742
743static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
744{
745 int rc = 0;
746
747 QETH_CARD_TEXT(card, 3, "strtvlan");
748
749 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
750 dev_info(&card->gdev->dev,
751 "VLAN not supported on %s\n", netdev_name(card->dev));
752 return -EOPNOTSUPP;
753 }
754
755 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
756 IPA_CMD_ASS_START, NULL);
757 if (rc) {
758 dev_warn(&card->gdev->dev,
759 "Starting VLAN support for %s failed\n",
760 netdev_name(card->dev));
761 } else {
762 dev_info(&card->gdev->dev, "VLAN enabled\n");
763 }
764 return rc;
765}
766
767static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
768{
769 int rc;
770
771 QETH_CARD_TEXT(card, 3, "stmcast");
772
773 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
774 dev_info(&card->gdev->dev,
775 "Multicast not supported on %s\n",
776 netdev_name(card->dev));
777 return -EOPNOTSUPP;
778 }
779
780 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
781 IPA_CMD_ASS_START, NULL);
782 if (rc) {
783 dev_warn(&card->gdev->dev,
784 "Starting multicast support for %s failed\n",
785 netdev_name(card->dev));
786 } else {
787 dev_info(&card->gdev->dev, "Multicast enabled\n");
788 card->dev->flags |= IFF_MULTICAST;
789 }
790 return rc;
791}
792
793static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
794{
795 u32 ipv6_data = 3;
796 int rc;
797
798 QETH_CARD_TEXT(card, 3, "softipv6");
799
800 if (IS_IQD(card))
801 goto out;
802
803 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
804 &ipv6_data);
805 if (rc) {
806 dev_err(&card->gdev->dev,
807 "Activating IPv6 support for %s failed\n",
808 netdev_name(card->dev));
809 return rc;
810 }
811 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
812 NULL);
813 if (rc) {
814 dev_err(&card->gdev->dev,
815 "Activating IPv6 support for %s failed\n",
816 netdev_name(card->dev));
817 return rc;
818 }
819 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
820 IPA_CMD_ASS_START, NULL);
821 if (rc) {
822 dev_warn(&card->gdev->dev,
823 "Enabling the passthrough mode for %s failed\n",
824 netdev_name(card->dev));
825 return rc;
826 }
827out:
828 dev_info(&card->gdev->dev, "IPV6 enabled\n");
829 return 0;
830}
831
832static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
833{
834 QETH_CARD_TEXT(card, 3, "strtipv6");
835
836 if (!qeth_is_supported(card, IPA_IPV6)) {
837 dev_info(&card->gdev->dev,
838 "IPv6 not supported on %s\n", netdev_name(card->dev));
839 return 0;
840 }
841 return qeth_l3_softsetup_ipv6(card);
842}
843
844static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
845{
846 u32 filter_data = 1;
847 int rc;
848
849 QETH_CARD_TEXT(card, 3, "stbrdcst");
850 card->info.broadcast_capable = 0;
851 if (!qeth_is_supported(card, IPA_FILTERING)) {
852 dev_info(&card->gdev->dev,
853 "Broadcast not supported on %s\n",
854 netdev_name(card->dev));
855 rc = -EOPNOTSUPP;
856 goto out;
857 }
858 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
859 IPA_CMD_ASS_START, NULL);
860 if (rc) {
861 dev_warn(&card->gdev->dev,
862 "Enabling broadcast filtering for %s failed\n",
863 netdev_name(card->dev));
864 goto out;
865 }
866
867 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
868 IPA_CMD_ASS_CONFIGURE, &filter_data);
869 if (rc) {
870 dev_warn(&card->gdev->dev,
871 "Setting up broadcast filtering for %s failed\n",
872 netdev_name(card->dev));
873 goto out;
874 }
875 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
876 dev_info(&card->gdev->dev, "Broadcast enabled\n");
877 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
878 IPA_CMD_ASS_ENABLE, &filter_data);
879 if (rc) {
880 dev_warn(&card->gdev->dev,
881 "Setting up broadcast echo filtering for %s failed\n",
882 netdev_name(card->dev));
883 goto out;
884 }
885 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
886out:
887 if (card->info.broadcast_capable)
888 card->dev->flags |= IFF_BROADCAST;
889 else
890 card->dev->flags &= ~IFF_BROADCAST;
891 return rc;
892}
893
894static void qeth_l3_start_ipassists(struct qeth_card *card)
895{
896 QETH_CARD_TEXT(card, 3, "strtipas");
897
898 qeth_l3_start_ipa_arp_processing(card);
899 qeth_l3_start_ipa_source_mac(card);
900 qeth_l3_start_ipa_vlan(card);
901 qeth_l3_start_ipa_multicast(card);
902 qeth_l3_start_ipa_ipv6(card);
903 qeth_l3_start_ipa_broadcast(card);
904}
905
906static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
907 struct qeth_reply *reply, unsigned long data)
908{
909 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
910
911 if (cmd->hdr.return_code)
912 return -EIO;
913 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
914 return -EADDRNOTAVAIL;
915
916 ether_addr_copy(card->dev->dev_addr,
917 cmd->data.create_destroy_addr.mac_addr);
918 return 0;
919}
920
921static 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, IPA_CMD_CREATE_ADDR, 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, qeth_l3_iqd_read_initial_mac_cb,
934 NULL);
935 return rc;
936}
937
938static 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
953static 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, IPA_CMD_CREATE_ADDR, 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, qeth_l3_get_unique_id_cb, &uid);
969
970out:
971 return uid;
972}
973
974static int
975qeth_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
1031static int
1032qeth_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, QETH_DIAGS_CMD_TRACE, 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, qeth_diags_trace_cb, NULL);
1046}
1047
1048static 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(&tmp, QETH_IP_TYPE_NORMAL, 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, &tmp);
1076 if (ipm) {
1077
1078 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1079 continue;
1080 }
1081
1082 ipm = kmemdup(&tmp, 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
1090walk_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(&tmp, QETH_IP_TYPE_NORMAL, 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, &tmp);
1108 if (ipm) {
1109
1110 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1111 continue;
1112 }
1113
1114 ipm = kmemdup(&tmp, 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
1123out:
1124 return 0;
1125}
1126
1127static 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)) {
1135 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1136 qeth_setadp_promisc_mode(card, enable);
1137 } else if (card->options.sniffer &&
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, QETH_DIAGS_CMD_TRACE_ENABLE);
1142 } else {
1143 QETH_CARD_TEXT(card, 3, "-promisc");
1144 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1145 }
1146 }
1147}
1148
1149static 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(card->dev, 0, card);
1162 if (qeth_is_supported(card, IPA_FULL_VLAN))
1163 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, 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(&addr->hnode);
1172 kfree(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(&addr->hnode);
1179 kfree(addr);
1180 break;
1181 }
1182 fallthrough;
1183 default:
1184
1185 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1186 }
1187 }
1188 }
1189
1190 qeth_l3_set_promisc_mode(card);
1191}
1192
1193static 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
1210static 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(cmd->hdr.return_code);
1217}
1218
1219static 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
1228
1229
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_ARP_PROCESSING,
1238 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1239 SETASS_DATA_SIZEOF(flags_32bit),
1240 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, 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
1252static __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
1288static 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
1294static 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(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(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(etype, 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, etype,
1340 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
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
1365
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
1373static 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_ARP_PROCESSING,
1384 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, 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
1397static 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,
1405 IPA_ARP_PROCESSING)) {
1406 QETH_CARD_TEXT(card, 3, "arpqnsup");
1407 rc = -EOPNOTSUPP;
1408 goto out;
1409 }
1410
1411 if (copy_from_user(&qinfo, udata, 6)) {
1412 rc = -EFAULT;
1413 goto out;
1414 }
1415 qinfo.udata = kzalloc(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, QETH_PROT_IPV4, &qinfo);
1422 if (rc) {
1423 if (copy_to_user(udata, qinfo.udata, 4))
1424 rc = -EFAULT;
1425 goto free_and_out;
1426 }
1427 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1428
1429 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1430 }
1431 if (copy_to_user(udata, qinfo.udata, 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
1438free_and_out:
1439 kfree(qinfo.udata);
1440out:
1441 return rc;
1442}
1443
1444static 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
1459
1460
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_ARP_PROCESSING, arp_cmd,
1469 SETASS_DATA_SIZEOF(arp_entry),
1470 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(cmd_entry->macaddr, entry->macaddr);
1476 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1477 rc = qeth_send_ipa_cmd(card, iob, 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
1484static 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
1493
1494
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_ARP_PROCESSING,
1503 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1504 QETH_PROT_IPV4);
1505 if (!iob)
1506 return -ENOMEM;
1507
1508 rc = qeth_send_ipa_cmd(card, iob, 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
1515static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1516{
1517 struct qeth_card *card = dev->ml_priv;
1518 struct qeth_arp_cache_entry arp_entry;
1519 enum qeth_arp_process_subcmds arp_cmd;
1520 int rc = 0;
1521
1522 switch (cmd) {
1523 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1524 if (!capable(CAP_NET_ADMIN)) {
1525 rc = -EPERM;
1526 break;
1527 }
1528 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1529 break;
1530 case SIOC_QETH_ARP_QUERY_INFO:
1531 if (!capable(CAP_NET_ADMIN)) {
1532 rc = -EPERM;
1533 break;
1534 }
1535 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1536 break;
1537 case SIOC_QETH_ARP_ADD_ENTRY:
1538 case SIOC_QETH_ARP_REMOVE_ENTRY:
1539 if (!capable(CAP_NET_ADMIN))
1540 return -EPERM;
1541 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1542 return -EFAULT;
1543
1544 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1545 IPA_CMD_ASS_ARP_ADD_ENTRY :
1546 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1547 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1548 case SIOC_QETH_ARP_FLUSH_CACHE:
1549 if (!capable(CAP_NET_ADMIN)) {
1550 rc = -EPERM;
1551 break;
1552 }
1553 rc = qeth_l3_arp_flush_cache(card);
1554 break;
1555 default:
1556 rc = -EOPNOTSUPP;
1557 }
1558 return rc;
1559}
1560
1561static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1562 __be16 proto)
1563{
1564 struct neighbour *n = NULL;
1565
1566 if (dst)
1567 n = dst_neigh_lookup_skb(dst, skb);
1568
1569 if (n) {
1570 int cast_type = n->type;
1571
1572 neigh_release(n);
1573 if ((cast_type == RTN_BROADCAST) ||
1574 (cast_type == RTN_MULTICAST) ||
1575 (cast_type == RTN_ANYCAST))
1576 return cast_type;
1577 return RTN_UNICAST;
1578 }
1579
1580
1581 switch (proto) {
1582 case htons(ETH_P_IP):
1583 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1584 return RTN_BROADCAST;
1585 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1586 RTN_MULTICAST : RTN_UNICAST;
1587 case htons(ETH_P_IPV6):
1588 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1589 RTN_MULTICAST : RTN_UNICAST;
1590 case htons(ETH_P_AF_IUCV):
1591 return RTN_UNICAST;
1592 default:
1593
1594 return qeth_get_ether_cast_type(skb);
1595 }
1596}
1597
1598static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto)
1599{
1600 struct dst_entry *dst;
1601 int cast_type;
1602
1603 rcu_read_lock();
1604 dst = qeth_dst_check_rcu(skb, proto);
1605 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1606 rcu_read_unlock();
1607
1608 return cast_type;
1609}
1610
1611static u8 qeth_l3_cast_type_to_flag(int cast_type)
1612{
1613 if (cast_type == RTN_MULTICAST)
1614 return QETH_CAST_MULTICAST;
1615 if (cast_type == RTN_ANYCAST)
1616 return QETH_CAST_ANYCAST;
1617 if (cast_type == RTN_BROADCAST)
1618 return QETH_CAST_BROADCAST;
1619 return QETH_CAST_UNICAST;
1620}
1621
1622static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1623 struct qeth_hdr *hdr, struct sk_buff *skb,
1624 __be16 proto, unsigned int data_len)
1625{
1626 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1627 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1628 struct qeth_card *card = queue->card;
1629 struct dst_entry *dst;
1630 int cast_type;
1631
1632 hdr->hdr.l3.length = data_len;
1633
1634 if (skb_is_gso(skb)) {
1635 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1636 } else {
1637 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1638
1639 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1640 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto);
1641
1642 if (proto == htons(ETH_P_IP))
1643 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1644 }
1645 }
1646
1647 if (proto == htons(ETH_P_IP) || IS_IQD(card)) {
1648
1649 if (skb_vlan_tag_present(skb)) {
1650 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1651 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1652 }
1653 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1654 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1655 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1656 }
1657
1658 rcu_read_lock();
1659 dst = qeth_dst_check_rcu(skb, proto);
1660
1661 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1662 cast_type = RTN_UNICAST;
1663 else
1664 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1665 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1666
1667 switch (proto) {
1668 case htons(ETH_P_IP):
1669 l3_hdr->next_hop.addr.s6_addr32[3] =
1670 qeth_next_hop_v4_rcu(skb, dst);
1671 break;
1672 case htons(ETH_P_IPV6):
1673 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
1674
1675 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1676 if (!IS_IQD(card))
1677 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1678 break;
1679 case htons(ETH_P_AF_IUCV):
1680 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
1681 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
1682 iucv_trans_hdr(skb)->destUserID, 8);
1683 l3_hdr->flags |= QETH_HDR_IPV6;
1684 break;
1685 default:
1686
1687 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1688 }
1689 rcu_read_unlock();
1690}
1691
1692static void qeth_l3_fixup_headers(struct sk_buff *skb)
1693{
1694 struct iphdr *iph = ip_hdr(skb);
1695
1696
1697 if (skb->ip_summed == CHECKSUM_PARTIAL)
1698 iph->check = 0;
1699 if (skb_is_gso(skb)) {
1700 iph->tot_len = 0;
1701 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1702 iph->daddr, 0);
1703 }
1704}
1705
1706static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1707 struct qeth_qdio_out_q *queue, __be16 proto)
1708{
1709 unsigned int hw_hdr_len;
1710 int rc;
1711
1712
1713 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1714 sizeof(struct qeth_hdr);
1715 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1716 if (rc)
1717 return rc;
1718 skb_pull(skb, ETH_HLEN);
1719
1720 qeth_l3_fixup_headers(skb);
1721 return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1722}
1723
1724static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1725 struct net_device *dev)
1726{
1727 struct qeth_card *card = dev->ml_priv;
1728 __be16 proto = vlan_get_protocol(skb);
1729 u16 txq = skb_get_queue_mapping(skb);
1730 struct qeth_qdio_out_q *queue;
1731 int rc;
1732
1733 if (!skb_is_gso(skb))
1734 qdisc_skb_cb(skb)->pkt_len = skb->len;
1735 if (IS_IQD(card)) {
1736 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1737
1738 if (card->options.sniffer)
1739 goto tx_drop;
1740
1741 switch (proto) {
1742 case htons(ETH_P_AF_IUCV):
1743 if (card->options.cq != QETH_CQ_ENABLED)
1744 goto tx_drop;
1745 break;
1746 case htons(ETH_P_IP):
1747 case htons(ETH_P_IPV6):
1748 if (card->options.cq == QETH_CQ_ENABLED)
1749 goto tx_drop;
1750 break;
1751 default:
1752 goto tx_drop;
1753 }
1754 } else {
1755 queue = card->qdio.out_qs[txq];
1756 }
1757
1758 if (!(dev->flags & IFF_BROADCAST) &&
1759 qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST)
1760 goto tx_drop;
1761
1762 if (proto == htons(ETH_P_IP) || IS_IQD(card))
1763 rc = qeth_l3_xmit(card, skb, queue, proto);
1764 else
1765 rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1766
1767 if (!rc)
1768 return NETDEV_TX_OK;
1769
1770tx_drop:
1771 QETH_TXQ_STAT_INC(queue, tx_dropped);
1772 kfree_skb(skb);
1773 return NETDEV_TX_OK;
1774}
1775
1776static void qeth_l3_set_rx_mode(struct net_device *dev)
1777{
1778 struct qeth_card *card = dev->ml_priv;
1779
1780 schedule_work(&card->rx_mode_work);
1781}
1782
1783
1784
1785
1786
1787
1788
1789
1790static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1791{
1792 n->nud_state = NUD_NOARP;
1793 memcpy(n->ha, "FAKELL", 6);
1794 n->output = n->ops->connected_output;
1795 return 0;
1796}
1797
1798static int
1799qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1800{
1801 if (np->tbl->family == AF_INET)
1802 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1803
1804 return 0;
1805}
1806
1807static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1808 struct net_device *dev,
1809 netdev_features_t features)
1810{
1811 if (vlan_get_protocol(skb) != htons(ETH_P_IP))
1812 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1813 return qeth_features_check(skb, dev, features);
1814}
1815
1816static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1817 struct net_device *sb_dev)
1818{
1819 __be16 proto = vlan_get_protocol(skb);
1820
1821 return qeth_iqd_select_queue(dev, skb,
1822 qeth_l3_get_cast_type(skb, proto), sb_dev);
1823}
1824
1825static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
1826 struct net_device *sb_dev)
1827{
1828 struct qeth_card *card = dev->ml_priv;
1829
1830 if (qeth_uses_tx_prio_queueing(card))
1831 return qeth_get_priority_queue(card, skb);
1832
1833 return netdev_pick_tx(dev, skb, sb_dev);
1834}
1835
1836static const struct net_device_ops qeth_l3_netdev_ops = {
1837 .ndo_open = qeth_open,
1838 .ndo_stop = qeth_stop,
1839 .ndo_get_stats64 = qeth_get_stats64,
1840 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1841 .ndo_select_queue = qeth_l3_iqd_select_queue,
1842 .ndo_validate_addr = eth_validate_addr,
1843 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1844 .ndo_do_ioctl = qeth_do_ioctl,
1845 .ndo_fix_features = qeth_fix_features,
1846 .ndo_set_features = qeth_set_features,
1847 .ndo_tx_timeout = qeth_tx_timeout,
1848};
1849
1850static const struct net_device_ops qeth_l3_osa_netdev_ops = {
1851 .ndo_open = qeth_open,
1852 .ndo_stop = qeth_stop,
1853 .ndo_get_stats64 = qeth_get_stats64,
1854 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1855 .ndo_features_check = qeth_l3_osa_features_check,
1856 .ndo_select_queue = qeth_l3_osa_select_queue,
1857 .ndo_validate_addr = eth_validate_addr,
1858 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1859 .ndo_do_ioctl = qeth_do_ioctl,
1860 .ndo_fix_features = qeth_fix_features,
1861 .ndo_set_features = qeth_set_features,
1862 .ndo_tx_timeout = qeth_tx_timeout,
1863 .ndo_neigh_setup = qeth_l3_neigh_setup,
1864};
1865
1866static int qeth_l3_setup_netdev(struct qeth_card *card)
1867{
1868 struct net_device *dev = card->dev;
1869 unsigned int headroom;
1870 int rc;
1871
1872 if (IS_OSD(card) || IS_OSX(card)) {
1873 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
1874
1875
1876 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
1877
1878 if (!IS_VM_NIC(card)) {
1879 card->dev->features |= NETIF_F_SG;
1880 card->dev->hw_features |= NETIF_F_TSO |
1881 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1882 card->dev->vlan_features |= NETIF_F_TSO |
1883 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1884 }
1885
1886 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1887 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1888 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1889 }
1890 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1891 card->dev->hw_features |= NETIF_F_TSO6;
1892 card->dev->vlan_features |= NETIF_F_TSO6;
1893 }
1894
1895
1896 if (card->dev->hw_features & NETIF_F_TSO6)
1897 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
1898 else if (card->dev->hw_features & NETIF_F_TSO)
1899 headroom = sizeof(struct qeth_hdr_tso);
1900 else
1901 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
1902 } else if (IS_IQD(card)) {
1903 card->dev->flags |= IFF_NOARP;
1904 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1905 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
1906
1907 rc = qeth_l3_iqd_read_initial_mac(card);
1908 if (rc)
1909 return rc;
1910 } else
1911 return -ENODEV;
1912
1913 card->dev->needed_headroom = headroom;
1914 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1915 NETIF_F_HW_VLAN_CTAG_RX;
1916
1917 netif_keep_dst(card->dev);
1918 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
1919 netif_set_gso_max_size(card->dev,
1920 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
1921
1922 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1923 return register_netdev(card->dev);
1924}
1925
1926static const struct device_type qeth_l3_devtype = {
1927 .name = "qeth_layer3",
1928 .groups = qeth_l3_attr_groups,
1929};
1930
1931static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
1932{
1933 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1934 int rc;
1935
1936 hash_init(card->ip_htable);
1937 mutex_init(&card->ip_lock);
1938 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
1939 dev_name(&gdev->dev));
1940 if (!card->cmd_wq)
1941 return -ENOMEM;
1942
1943 if (gdev->dev.type == &qeth_generic_devtype) {
1944 rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups);
1945 if (rc) {
1946 destroy_workqueue(card->cmd_wq);
1947 return rc;
1948 }
1949 }
1950
1951 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
1952 return 0;
1953}
1954
1955static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
1956{
1957 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1958
1959 if (cgdev->dev.type == &qeth_generic_devtype)
1960 device_remove_groups(&cgdev->dev, qeth_l3_attr_groups);
1961
1962 qeth_set_allowed_threads(card, 0, 1);
1963 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1964
1965 if (cgdev->state == CCWGROUP_ONLINE)
1966 qeth_set_offline(card, card->discipline, false);
1967
1968 cancel_work_sync(&card->close_dev_work);
1969 if (card->dev->reg_state == NETREG_REGISTERED)
1970 unregister_netdev(card->dev);
1971
1972 flush_workqueue(card->cmd_wq);
1973 destroy_workqueue(card->cmd_wq);
1974 qeth_l3_clear_ip_htable(card, 0);
1975 qeth_l3_clear_ipato_list(card);
1976}
1977
1978static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok)
1979{
1980 struct net_device *dev = card->dev;
1981 int rc = 0;
1982
1983
1984 QETH_CARD_TEXT(card, 2, "softsetp");
1985
1986 rc = qeth_l3_setadapter_parms(card);
1987 if (rc)
1988 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
1989 if (!card->options.sniffer) {
1990 qeth_l3_start_ipassists(card);
1991
1992 rc = qeth_l3_setrouting_v4(card);
1993 if (rc)
1994 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
1995 rc = qeth_l3_setrouting_v6(card);
1996 if (rc)
1997 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
1998 }
1999
2000 card->state = CARD_STATE_SOFTSETUP;
2001
2002 qeth_set_allowed_threads(card, 0xffffffff, 0);
2003 qeth_l3_recover_ip(card);
2004
2005 if (dev->reg_state != NETREG_REGISTERED) {
2006 rc = qeth_l3_setup_netdev(card);
2007 if (rc)
2008 goto err_setup;
2009
2010 if (carrier_ok)
2011 netif_carrier_on(dev);
2012 } else {
2013 rtnl_lock();
2014 rc = qeth_set_real_num_tx_queues(card,
2015 qeth_tx_actual_queues(card));
2016 if (rc) {
2017 rtnl_unlock();
2018 goto err_set_queues;
2019 }
2020
2021 if (carrier_ok)
2022 netif_carrier_on(dev);
2023 else
2024 netif_carrier_off(dev);
2025
2026 netif_device_attach(dev);
2027 qeth_enable_hw_features(dev);
2028
2029 if (card->info.open_when_online) {
2030 card->info.open_when_online = 0;
2031 dev_open(dev, NULL);
2032 }
2033 rtnl_unlock();
2034 }
2035 return 0;
2036
2037err_set_queues:
2038err_setup:
2039 qeth_set_allowed_threads(card, 0, 1);
2040 card->state = CARD_STATE_DOWN;
2041 qeth_l3_clear_ip_htable(card, 1);
2042 return rc;
2043}
2044
2045static void qeth_l3_set_offline(struct qeth_card *card)
2046{
2047 qeth_set_allowed_threads(card, 0, 1);
2048 qeth_l3_drain_rx_mode_cache(card);
2049
2050 if (card->options.sniffer &&
2051 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2052 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2053
2054 if (card->state == CARD_STATE_SOFTSETUP) {
2055 card->state = CARD_STATE_DOWN;
2056 qeth_l3_clear_ip_htable(card, 1);
2057 }
2058}
2059
2060
2061static int qeth_l3_control_event(struct qeth_card *card,
2062 struct qeth_ipa_cmd *cmd)
2063{
2064 return 1;
2065}
2066
2067const struct qeth_discipline qeth_l3_discipline = {
2068 .devtype = &qeth_l3_devtype,
2069 .setup = qeth_l3_probe_device,
2070 .remove = qeth_l3_remove_device,
2071 .set_online = qeth_l3_set_online,
2072 .set_offline = qeth_l3_set_offline,
2073 .do_ioctl = qeth_l3_do_ioctl,
2074 .control_event_handler = qeth_l3_control_event,
2075};
2076EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2077
2078static int qeth_l3_handle_ip_event(struct qeth_card *card,
2079 struct qeth_ipaddr *addr,
2080 unsigned long event)
2081{
2082 switch (event) {
2083 case NETDEV_UP:
2084 qeth_l3_modify_ip(card, addr, true);
2085 return NOTIFY_OK;
2086 case NETDEV_DOWN:
2087 qeth_l3_modify_ip(card, addr, false);
2088 return NOTIFY_OK;
2089 default:
2090 return NOTIFY_DONE;
2091 }
2092}
2093
2094struct qeth_l3_ip_event_work {
2095 struct work_struct work;
2096 struct qeth_card *card;
2097 struct qeth_ipaddr addr;
2098};
2099
2100#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2101
2102static void qeth_l3_add_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(ip_work->card, &ip_work->addr, true);
2107 kfree(work);
2108}
2109
2110static void qeth_l3_delete_ip_worker(struct work_struct *work)
2111{
2112 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2113
2114 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2115 kfree(work);
2116}
2117
2118static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2119{
2120 if (is_vlan_dev(dev))
2121 dev = vlan_dev_real_dev(dev);
2122 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2123 dev->netdev_ops == &qeth_l3_netdev_ops)
2124 return (struct qeth_card *) dev->ml_priv;
2125 return NULL;
2126}
2127
2128static int qeth_l3_ip_event(struct notifier_block *this,
2129 unsigned long event, void *ptr)
2130{
2131 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2132 struct net_device *dev = ifa->ifa_dev->dev;
2133 struct qeth_ipaddr addr;
2134 struct qeth_card *card;
2135
2136 card = qeth_l3_get_card_from_dev(dev);
2137 if (!card)
2138 return NOTIFY_DONE;
2139 QETH_CARD_TEXT(card, 3, "ipevent");
2140
2141 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2142 addr.u.a4.addr = ifa->ifa_address;
2143 addr.u.a4.mask = ifa->ifa_mask;
2144
2145 return qeth_l3_handle_ip_event(card, &addr, event);
2146}
2147
2148static struct notifier_block qeth_l3_ip_notifier = {
2149 qeth_l3_ip_event,
2150 NULL,
2151};
2152
2153static int qeth_l3_ip6_event(struct notifier_block *this,
2154 unsigned long event, void *ptr)
2155{
2156 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2157 struct net_device *dev = ifa->idev->dev;
2158 struct qeth_l3_ip_event_work *ip_work;
2159 struct qeth_card *card;
2160
2161 if (event != NETDEV_UP && event != NETDEV_DOWN)
2162 return NOTIFY_DONE;
2163
2164 card = qeth_l3_get_card_from_dev(dev);
2165 if (!card)
2166 return NOTIFY_DONE;
2167 QETH_CARD_TEXT(card, 3, "ip6event");
2168 if (!qeth_is_supported(card, IPA_IPV6))
2169 return NOTIFY_DONE;
2170
2171 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2172 if (!ip_work)
2173 return NOTIFY_DONE;
2174
2175 if (event == NETDEV_UP)
2176 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2177 else
2178 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2179
2180 ip_work->card = card;
2181 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2182 QETH_PROT_IPV6);
2183 ip_work->addr.u.a6.addr = ifa->addr;
2184 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2185
2186 queue_work(card->cmd_wq, &ip_work->work);
2187 return NOTIFY_OK;
2188}
2189
2190static struct notifier_block qeth_l3_ip6_notifier = {
2191 qeth_l3_ip6_event,
2192 NULL,
2193};
2194
2195static int qeth_l3_register_notifiers(void)
2196{
2197 int rc;
2198
2199 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2200 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2201 if (rc)
2202 return rc;
2203 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2204 if (rc) {
2205 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2206 return rc;
2207 }
2208 return 0;
2209}
2210
2211static void qeth_l3_unregister_notifiers(void)
2212{
2213 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2214 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2215 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2216}
2217
2218static int __init qeth_l3_init(void)
2219{
2220 pr_info("register layer 3 discipline\n");
2221 return qeth_l3_register_notifiers();
2222}
2223
2224static void __exit qeth_l3_exit(void)
2225{
2226 qeth_l3_unregister_notifiers();
2227 pr_info("unregister layer 3 discipline\n");
2228}
2229
2230module_init(qeth_l3_init);
2231module_exit(qeth_l3_exit);
2232MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2233MODULE_DESCRIPTION("qeth layer 3 discipline");
2234MODULE_LICENSE("GPL");
2235
