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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 default:
438 goto out_inval;
439 }
440 }
441out_inval:
442 *type = NO_ROUTER;
443 return -EINVAL;
444}
445
446int qeth_l3_setrouting_v4(struct qeth_card *card)
447{
448 int rc;
449
450 QETH_CARD_TEXT(card, 3, "setrtg4");
451
452 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
453 QETH_PROT_IPV4);
454 if (rc)
455 return rc;
456
457 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
458 QETH_PROT_IPV4);
459 if (rc) {
460 card->options.route4.type = NO_ROUTER;
461 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
462 rc, CARD_DEVID(card));
463 }
464 return rc;
465}
466
467int qeth_l3_setrouting_v6(struct qeth_card *card)
468{
469 int rc = 0;
470
471 QETH_CARD_TEXT(card, 3, "setrtg6");
472
473 if (!qeth_is_supported(card, IPA_IPV6))
474 return 0;
475 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
476 QETH_PROT_IPV6);
477 if (rc)
478 return rc;
479
480 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
481 QETH_PROT_IPV6);
482 if (rc) {
483 card->options.route6.type = NO_ROUTER;
484 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
485 rc, CARD_DEVID(card));
486 }
487 return rc;
488}
489
490
491
492
493
494
495
496
497
498
499void qeth_l3_update_ipato(struct qeth_card *card)
500{
501 struct qeth_ipaddr *addr;
502 unsigned int i;
503
504 hash_for_each(card->ip_htable, i, addr, hnode) {
505 if (addr->type != QETH_IP_TYPE_NORMAL)
506 continue;
507 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
508 }
509}
510
511static void qeth_l3_clear_ipato_list(struct qeth_card *card)
512{
513 struct qeth_ipato_entry *ipatoe, *tmp;
514
515 mutex_lock(&card->ip_lock);
516
517 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
518 list_del(&ipatoe->entry);
519 kfree(ipatoe);
520 }
521
522 qeth_l3_update_ipato(card);
523 mutex_unlock(&card->ip_lock);
524}
525
526int qeth_l3_add_ipato_entry(struct qeth_card *card,
527 struct qeth_ipato_entry *new)
528{
529 struct qeth_ipato_entry *ipatoe;
530 int rc = 0;
531
532 QETH_CARD_TEXT(card, 2, "addipato");
533
534 mutex_lock(&card->ip_lock);
535
536 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
537 if (ipatoe->proto != new->proto)
538 continue;
539 if (!memcmp(ipatoe->addr, new->addr,
540 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) &&
541 (ipatoe->mask_bits == new->mask_bits)) {
542 rc = -EEXIST;
543 break;
544 }
545 }
546
547 if (!rc) {
548 list_add_tail(&new->entry, &card->ipato.entries);
549 qeth_l3_update_ipato(card);
550 }
551
552 mutex_unlock(&card->ip_lock);
553
554 return rc;
555}
556
557int qeth_l3_del_ipato_entry(struct qeth_card *card,
558 enum qeth_prot_versions proto, u8 *addr,
559 unsigned int mask_bits)
560{
561 struct qeth_ipato_entry *ipatoe, *tmp;
562 int rc = -ENOENT;
563
564 QETH_CARD_TEXT(card, 2, "delipato");
565
566 mutex_lock(&card->ip_lock);
567
568 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
569 if (ipatoe->proto != proto)
570 continue;
571 if (!memcmp(ipatoe->addr, addr,
572 (proto == QETH_PROT_IPV4) ? 4 : 16) &&
573 (ipatoe->mask_bits == mask_bits)) {
574 list_del(&ipatoe->entry);
575 qeth_l3_update_ipato(card);
576 kfree(ipatoe);
577 rc = 0;
578 }
579 }
580
581 mutex_unlock(&card->ip_lock);
582
583 return rc;
584}
585
586int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
587 enum qeth_ip_types type,
588 enum qeth_prot_versions proto)
589{
590 struct qeth_ipaddr addr;
591
592 qeth_l3_init_ipaddr(&addr, type, proto);
593 if (proto == QETH_PROT_IPV4)
594 memcpy(&addr.u.a4.addr, ip, 4);
595 else
596 memcpy(&addr.u.a6.addr, ip, 16);
597
598 return qeth_l3_modify_ip(card, &addr, add);
599}
600
601int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
602{
603 struct qeth_ipaddr addr;
604 unsigned int i;
605
606 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
607 addr.u.a6.addr.s6_addr[0] = 0xfe;
608 addr.u.a6.addr.s6_addr[1] = 0x80;
609 for (i = 0; i < 8; i++)
610 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
611
612 return qeth_l3_modify_ip(card, &addr, add);
613}
614
615static int qeth_l3_register_addr_entry(struct qeth_card *card,
616 struct qeth_ipaddr *addr)
617{
618 char buf[50];
619 int rc = 0;
620 int cnt = 3;
621
622 if (card->options.sniffer)
623 return 0;
624
625 if (addr->proto == QETH_PROT_IPV4) {
626 QETH_CARD_TEXT(card, 2, "setaddr4");
627 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
628 } else if (addr->proto == QETH_PROT_IPV6) {
629 QETH_CARD_TEXT(card, 2, "setaddr6");
630 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
631 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
632 } else {
633 QETH_CARD_TEXT(card, 2, "setaddr?");
634 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
635 }
636 do {
637 if (addr->is_multicast)
638 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
639 else
640 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
641 if (rc)
642 QETH_CARD_TEXT(card, 2, "failed");
643 } while ((--cnt > 0) && rc);
644 if (rc) {
645 QETH_CARD_TEXT(card, 2, "FAILED");
646 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
647 dev_warn(&card->gdev->dev,
648 "Registering IP address %s failed\n", buf);
649 }
650 return rc;
651}
652
653static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
654 struct qeth_ipaddr *addr)
655{
656 int rc = 0;
657
658 if (card->options.sniffer)
659 return 0;
660
661 if (addr->proto == QETH_PROT_IPV4) {
662 QETH_CARD_TEXT(card, 2, "deladdr4");
663 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
664 } else if (addr->proto == QETH_PROT_IPV6) {
665 QETH_CARD_TEXT(card, 2, "deladdr6");
666 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
667 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
668 } else {
669 QETH_CARD_TEXT(card, 2, "deladdr?");
670 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
671 }
672 if (addr->is_multicast)
673 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
674 else
675 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
676 if (rc)
677 QETH_CARD_TEXT(card, 2, "failed");
678
679 return rc;
680}
681
682static int qeth_l3_setadapter_parms(struct qeth_card *card)
683{
684 int rc = 0;
685
686 QETH_CARD_TEXT(card, 2, "setadprm");
687
688 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
689 rc = qeth_setadpparms_change_macaddr(card);
690 if (rc)
691 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
692 " address failed\n");
693 }
694
695 return rc;
696}
697
698static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
699{
700 int rc;
701
702 QETH_CARD_TEXT(card, 3, "ipaarp");
703
704 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
705 dev_info(&card->gdev->dev,
706 "ARP processing not supported on %s!\n",
707 netdev_name(card->dev));
708 return 0;
709 }
710 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
711 IPA_CMD_ASS_START, NULL);
712 if (rc) {
713 dev_warn(&card->gdev->dev,
714 "Starting ARP processing support for %s failed\n",
715 netdev_name(card->dev));
716 }
717 return rc;
718}
719
720static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
721{
722 int rc;
723
724 QETH_CARD_TEXT(card, 3, "stsrcmac");
725
726 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
727 dev_info(&card->gdev->dev,
728 "Inbound source MAC-address not supported on %s\n",
729 netdev_name(card->dev));
730 return -EOPNOTSUPP;
731 }
732
733 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
734 IPA_CMD_ASS_START, NULL);
735 if (rc)
736 dev_warn(&card->gdev->dev,
737 "Starting source MAC-address support for %s failed\n",
738 netdev_name(card->dev));
739 return rc;
740}
741
742static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
743{
744 int rc = 0;
745
746 QETH_CARD_TEXT(card, 3, "strtvlan");
747
748 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
749 dev_info(&card->gdev->dev,
750 "VLAN not supported on %s\n", netdev_name(card->dev));
751 return -EOPNOTSUPP;
752 }
753
754 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
755 IPA_CMD_ASS_START, NULL);
756 if (rc) {
757 dev_warn(&card->gdev->dev,
758 "Starting VLAN support for %s failed\n",
759 netdev_name(card->dev));
760 } else {
761 dev_info(&card->gdev->dev, "VLAN enabled\n");
762 }
763 return rc;
764}
765
766static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
767{
768 int rc;
769
770 QETH_CARD_TEXT(card, 3, "stmcast");
771
772 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
773 dev_info(&card->gdev->dev,
774 "Multicast not supported on %s\n",
775 netdev_name(card->dev));
776 return -EOPNOTSUPP;
777 }
778
779 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
780 IPA_CMD_ASS_START, NULL);
781 if (rc) {
782 dev_warn(&card->gdev->dev,
783 "Starting multicast support for %s failed\n",
784 netdev_name(card->dev));
785 } else {
786 dev_info(&card->gdev->dev, "Multicast enabled\n");
787 card->dev->flags |= IFF_MULTICAST;
788 }
789 return rc;
790}
791
792static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
793{
794 u32 ipv6_data = 3;
795 int rc;
796
797 QETH_CARD_TEXT(card, 3, "softipv6");
798
799 if (IS_IQD(card))
800 goto out;
801
802 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
803 &ipv6_data);
804 if (rc) {
805 dev_err(&card->gdev->dev,
806 "Activating IPv6 support for %s failed\n",
807 netdev_name(card->dev));
808 return rc;
809 }
810 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
811 NULL);
812 if (rc) {
813 dev_err(&card->gdev->dev,
814 "Activating IPv6 support for %s failed\n",
815 netdev_name(card->dev));
816 return rc;
817 }
818 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
819 IPA_CMD_ASS_START, NULL);
820 if (rc) {
821 dev_warn(&card->gdev->dev,
822 "Enabling the passthrough mode for %s failed\n",
823 netdev_name(card->dev));
824 return rc;
825 }
826out:
827 dev_info(&card->gdev->dev, "IPV6 enabled\n");
828 return 0;
829}
830
831static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
832{
833 QETH_CARD_TEXT(card, 3, "strtipv6");
834
835 if (!qeth_is_supported(card, IPA_IPV6)) {
836 dev_info(&card->gdev->dev,
837 "IPv6 not supported on %s\n", netdev_name(card->dev));
838 return 0;
839 }
840 return qeth_l3_softsetup_ipv6(card);
841}
842
843static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
844{
845 u32 filter_data = 1;
846 int rc;
847
848 QETH_CARD_TEXT(card, 3, "stbrdcst");
849 card->info.broadcast_capable = 0;
850 if (!qeth_is_supported(card, IPA_FILTERING)) {
851 dev_info(&card->gdev->dev,
852 "Broadcast not supported on %s\n",
853 netdev_name(card->dev));
854 rc = -EOPNOTSUPP;
855 goto out;
856 }
857 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
858 IPA_CMD_ASS_START, NULL);
859 if (rc) {
860 dev_warn(&card->gdev->dev,
861 "Enabling broadcast filtering for %s failed\n",
862 netdev_name(card->dev));
863 goto out;
864 }
865
866 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
867 IPA_CMD_ASS_CONFIGURE, &filter_data);
868 if (rc) {
869 dev_warn(&card->gdev->dev,
870 "Setting up broadcast filtering for %s failed\n",
871 netdev_name(card->dev));
872 goto out;
873 }
874 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
875 dev_info(&card->gdev->dev, "Broadcast enabled\n");
876 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
877 IPA_CMD_ASS_ENABLE, &filter_data);
878 if (rc) {
879 dev_warn(&card->gdev->dev,
880 "Setting up broadcast echo filtering for %s failed\n",
881 netdev_name(card->dev));
882 goto out;
883 }
884 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
885out:
886 if (card->info.broadcast_capable)
887 card->dev->flags |= IFF_BROADCAST;
888 else
889 card->dev->flags &= ~IFF_BROADCAST;
890 return rc;
891}
892
893static void qeth_l3_start_ipassists(struct qeth_card *card)
894{
895 QETH_CARD_TEXT(card, 3, "strtipas");
896
897 qeth_l3_start_ipa_arp_processing(card);
898 qeth_l3_start_ipa_source_mac(card);
899 qeth_l3_start_ipa_vlan(card);
900 qeth_l3_start_ipa_multicast(card);
901 qeth_l3_start_ipa_ipv6(card);
902 qeth_l3_start_ipa_broadcast(card);
903}
904
905static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
906 struct qeth_reply *reply, unsigned long data)
907{
908 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
909
910 if (cmd->hdr.return_code)
911 return -EIO;
912 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
913 return -EADDRNOTAVAIL;
914
915 ether_addr_copy(card->dev->dev_addr,
916 cmd->data.create_destroy_addr.mac_addr);
917 return 0;
918}
919
920static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
921{
922 int rc = 0;
923 struct qeth_cmd_buffer *iob;
924
925 QETH_CARD_TEXT(card, 2, "hsrmac");
926
927 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
928 IPA_DATA_SIZEOF(create_destroy_addr));
929 if (!iob)
930 return -ENOMEM;
931
932 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
933 NULL);
934 return rc;
935}
936
937static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
938 struct qeth_reply *reply, unsigned long data)
939{
940 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
941 u16 *uid = reply->param;
942
943 if (cmd->hdr.return_code == 0) {
944 *uid = cmd->data.create_destroy_addr.uid;
945 return 0;
946 }
947
948 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
949 return -EIO;
950}
951
952static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid)
953{
954 struct qeth_cmd_buffer *iob;
955
956 QETH_CARD_TEXT(card, 2, "guniqeid");
957
958 if (!qeth_is_supported(card, IPA_IPV6))
959 goto out;
960
961 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
962 IPA_DATA_SIZEOF(create_destroy_addr));
963 if (!iob)
964 goto out;
965
966 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid;
967 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid);
968
969out:
970 return uid;
971}
972
973static int
974qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
975 unsigned long data)
976{
977 struct qeth_ipa_cmd *cmd;
978 __u16 rc;
979
980 QETH_CARD_TEXT(card, 2, "diastrcb");
981
982 cmd = (struct qeth_ipa_cmd *)data;
983 rc = cmd->hdr.return_code;
984 if (rc)
985 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
986 switch (cmd->data.diagass.action) {
987 case QETH_DIAGS_CMD_TRACE_QUERY:
988 break;
989 case QETH_DIAGS_CMD_TRACE_DISABLE:
990 switch (rc) {
991 case 0:
992 case IPA_RC_INVALID_SUBCMD:
993 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
994 dev_info(&card->gdev->dev, "The HiperSockets network "
995 "traffic analyzer is deactivated\n");
996 break;
997 default:
998 break;
999 }
1000 break;
1001 case QETH_DIAGS_CMD_TRACE_ENABLE:
1002 switch (rc) {
1003 case 0:
1004 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1005 dev_info(&card->gdev->dev, "The HiperSockets network "
1006 "traffic analyzer is activated\n");
1007 break;
1008 case IPA_RC_HARDWARE_AUTH_ERROR:
1009 dev_warn(&card->gdev->dev, "The device is not "
1010 "authorized to run as a HiperSockets network "
1011 "traffic analyzer\n");
1012 break;
1013 case IPA_RC_TRACE_ALREADY_ACTIVE:
1014 dev_warn(&card->gdev->dev, "A HiperSockets "
1015 "network traffic analyzer is already "
1016 "active in the HiperSockets LAN\n");
1017 break;
1018 default:
1019 break;
1020 }
1021 break;
1022 default:
1023 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1024 cmd->data.diagass.action, CARD_DEVID(card));
1025 }
1026
1027 return rc ? -EIO : 0;
1028}
1029
1030static int
1031qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1032{
1033 struct qeth_cmd_buffer *iob;
1034 struct qeth_ipa_cmd *cmd;
1035
1036 QETH_CARD_TEXT(card, 2, "diagtrac");
1037
1038 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1039 if (!iob)
1040 return -ENOMEM;
1041 cmd = __ipa_cmd(iob);
1042 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1043 cmd->data.diagass.action = diags_cmd;
1044 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1045}
1046
1047static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
1048{
1049 struct qeth_card *card = arg;
1050 struct inet6_dev *in6_dev;
1051 struct in_device *in4_dev;
1052 struct qeth_ipaddr *ipm;
1053 struct qeth_ipaddr tmp;
1054 struct ip_mc_list *im4;
1055 struct ifmcaddr6 *im6;
1056
1057 QETH_CARD_TEXT(card, 4, "addmc");
1058
1059 if (!dev || !(dev->flags & IFF_UP))
1060 goto out;
1061
1062 in4_dev = __in_dev_get_rtnl(dev);
1063 if (!in4_dev)
1064 goto walk_ipv6;
1065
1066 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
1067 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1068 tmp.is_multicast = 1;
1069
1070 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
1071 im4 = rtnl_dereference(im4->next_rcu)) {
1072 tmp.u.a4.addr = im4->multiaddr;
1073
1074 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1075 if (ipm) {
1076
1077 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1078 continue;
1079 }
1080
1081 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
1082 if (!ipm)
1083 continue;
1084
1085 hash_add(card->rx_mode_addrs, &ipm->hnode,
1086 qeth_l3_ipaddr_hash(ipm));
1087 }
1088
1089walk_ipv6:
1090 if (!qeth_is_supported(card, IPA_IPV6))
1091 goto out;
1092
1093 in6_dev = __in6_dev_get(dev);
1094 if (!in6_dev)
1095 goto out;
1096
1097 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
1098 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1099 tmp.is_multicast = 1;
1100
1101 for (im6 = rtnl_dereference(in6_dev->mc_list);
1102 im6;
1103 im6 = rtnl_dereference(im6->next)) {
1104 tmp.u.a6.addr = im6->mca_addr;
1105
1106 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1107 if (ipm) {
1108
1109 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1110 continue;
1111 }
1112
1113 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
1114 if (!ipm)
1115 continue;
1116
1117 hash_add(card->rx_mode_addrs, &ipm->hnode,
1118 qeth_l3_ipaddr_hash(ipm));
1119
1120 }
1121
1122out:
1123 return 0;
1124}
1125
1126static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1127{
1128 bool enable = card->dev->flags & IFF_PROMISC;
1129
1130 if (card->info.promisc_mode == enable)
1131 return;
1132
1133 if (IS_VM_NIC(card)) {
1134 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1135 qeth_setadp_promisc_mode(card, enable);
1136 } else if (card->options.sniffer &&
1137 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1138 if (enable) {
1139 QETH_CARD_TEXT(card, 3, "+promisc");
1140 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1141 } else {
1142 QETH_CARD_TEXT(card, 3, "-promisc");
1143 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1144 }
1145 }
1146}
1147
1148static void qeth_l3_rx_mode_work(struct work_struct *work)
1149{
1150 struct qeth_card *card = container_of(work, struct qeth_card,
1151 rx_mode_work);
1152 struct qeth_ipaddr *addr;
1153 struct hlist_node *tmp;
1154 int i, rc;
1155
1156 QETH_CARD_TEXT(card, 3, "setmulti");
1157
1158 if (!card->options.sniffer) {
1159 rtnl_lock();
1160 qeth_l3_add_mcast_rtnl(card->dev, 0, card);
1161 if (qeth_is_supported(card, IPA_FULL_VLAN))
1162 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
1163 rtnl_unlock();
1164
1165 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
1166 switch (addr->disp_flag) {
1167 case QETH_DISP_ADDR_DELETE:
1168 rc = qeth_l3_deregister_addr_entry(card, addr);
1169 if (!rc || rc == -ENOENT) {
1170 hash_del(&addr->hnode);
1171 kfree(addr);
1172 }
1173 break;
1174 case QETH_DISP_ADDR_ADD:
1175 rc = qeth_l3_register_addr_entry(card, addr);
1176 if (rc && rc != -ENETDOWN) {
1177 hash_del(&addr->hnode);
1178 kfree(addr);
1179 break;
1180 }
1181 fallthrough;
1182 default:
1183
1184 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1185 }
1186 }
1187 }
1188
1189 qeth_l3_set_promisc_mode(card);
1190}
1191
1192static int qeth_l3_arp_makerc(u16 rc)
1193{
1194 switch (rc) {
1195 case IPA_RC_SUCCESS:
1196 return 0;
1197 case QETH_IPA_ARP_RC_NOTSUPP:
1198 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1199 return -EOPNOTSUPP;
1200 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1201 return -EINVAL;
1202 case QETH_IPA_ARP_RC_Q_NO_DATA:
1203 return -ENOENT;
1204 default:
1205 return -EIO;
1206 }
1207}
1208
1209static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1210 unsigned long data)
1211{
1212 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1213
1214 qeth_setassparms_cb(card, reply, data);
1215 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1216}
1217
1218static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1219{
1220 struct qeth_cmd_buffer *iob;
1221 int rc;
1222
1223 QETH_CARD_TEXT(card, 3, "arpstnoe");
1224
1225
1226
1227
1228
1229
1230 if (IS_VM_NIC(card))
1231 return -EOPNOTSUPP;
1232 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1233 return -EOPNOTSUPP;
1234 }
1235
1236 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1237 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1238 SETASS_DATA_SIZEOF(flags_32bit),
1239 QETH_PROT_IPV4);
1240 if (!iob)
1241 return -ENOMEM;
1242
1243 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1244 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1245 if (rc)
1246 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1247 CARD_DEVID(card), rc);
1248 return rc;
1249}
1250
1251static __u32 get_arp_entry_size(struct qeth_card *card,
1252 struct qeth_arp_query_data *qdata,
1253 struct qeth_arp_entrytype *type, __u8 strip_entries)
1254{
1255 __u32 rc;
1256 __u8 is_hsi;
1257
1258 is_hsi = qdata->reply_bits == 5;
1259 if (type->ip == QETHARP_IP_ADDR_V4) {
1260 QETH_CARD_TEXT(card, 4, "arpev4");
1261 if (strip_entries) {
1262 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1263 sizeof(struct qeth_arp_qi_entry7_short);
1264 } else {
1265 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1266 sizeof(struct qeth_arp_qi_entry7);
1267 }
1268 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1269 QETH_CARD_TEXT(card, 4, "arpev6");
1270 if (strip_entries) {
1271 rc = is_hsi ?
1272 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1273 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1274 } else {
1275 rc = is_hsi ?
1276 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1277 sizeof(struct qeth_arp_qi_entry7_ipv6);
1278 }
1279 } else {
1280 QETH_CARD_TEXT(card, 4, "arpinv");
1281 rc = 0;
1282 }
1283
1284 return rc;
1285}
1286
1287static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1288{
1289 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1290 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1291}
1292
1293static int qeth_l3_arp_query_cb(struct qeth_card *card,
1294 struct qeth_reply *reply, unsigned long data)
1295{
1296 struct qeth_ipa_cmd *cmd;
1297 struct qeth_arp_query_data *qdata;
1298 struct qeth_arp_query_info *qinfo;
1299 int e;
1300 int entrybytes_done;
1301 int stripped_bytes;
1302 __u8 do_strip_entries;
1303
1304 QETH_CARD_TEXT(card, 3, "arpquecb");
1305
1306 qinfo = (struct qeth_arp_query_info *) reply->param;
1307 cmd = (struct qeth_ipa_cmd *) data;
1308 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1309 if (cmd->hdr.return_code) {
1310 QETH_CARD_TEXT(card, 4, "arpcberr");
1311 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1312 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1313 }
1314 if (cmd->data.setassparms.hdr.return_code) {
1315 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1316 QETH_CARD_TEXT(card, 4, "setaperr");
1317 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1318 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1319 }
1320 qdata = &cmd->data.setassparms.data.query_arp;
1321 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1322
1323 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1324 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1325 entrybytes_done = 0;
1326 for (e = 0; e < qdata->no_entries; ++e) {
1327 char *cur_entry;
1328 __u32 esize;
1329 struct qeth_arp_entrytype *etype;
1330
1331 cur_entry = &qdata->data + entrybytes_done;
1332 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1333 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1334 QETH_CARD_TEXT(card, 4, "pmis");
1335 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1336 break;
1337 }
1338 esize = get_arp_entry_size(card, qdata, etype,
1339 do_strip_entries);
1340 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1341 if (!esize)
1342 break;
1343
1344 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1345 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1346 memset(qinfo->udata, 0, 4);
1347 return -ENOSPC;
1348 }
1349
1350 memcpy(qinfo->udata + qinfo->udata_offset,
1351 &qdata->data + entrybytes_done + stripped_bytes,
1352 esize);
1353 entrybytes_done += esize + stripped_bytes;
1354 qinfo->udata_offset += esize;
1355 ++qinfo->no_entries;
1356 }
1357
1358 if (cmd->data.setassparms.hdr.seq_no <
1359 cmd->data.setassparms.hdr.number_of_replies)
1360 return 1;
1361 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1362 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1363
1364
1365 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1366 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1367 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1368 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1369 return 0;
1370}
1371
1372static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1373 enum qeth_prot_versions prot,
1374 struct qeth_arp_query_info *qinfo)
1375{
1376 struct qeth_cmd_buffer *iob;
1377 struct qeth_ipa_cmd *cmd;
1378 int rc;
1379
1380 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1381
1382 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1383 IPA_CMD_ASS_ARP_QUERY_INFO,
1384 SETASS_DATA_SIZEOF(query_arp), prot);
1385 if (!iob)
1386 return -ENOMEM;
1387 cmd = __ipa_cmd(iob);
1388 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1389 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1390 if (rc)
1391 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1392 CARD_DEVID(card), rc);
1393 return rc;
1394}
1395
1396static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1397{
1398 struct qeth_arp_query_info qinfo = {0, };
1399 int rc;
1400
1401 QETH_CARD_TEXT(card, 3, "arpquery");
1402
1403 if (!qeth_is_supported(card,
1404 IPA_ARP_PROCESSING)) {
1405 QETH_CARD_TEXT(card, 3, "arpqnsup");
1406 rc = -EOPNOTSUPP;
1407 goto out;
1408 }
1409
1410 if (copy_from_user(&qinfo, udata, 6)) {
1411 rc = -EFAULT;
1412 goto out;
1413 }
1414 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1415 if (!qinfo.udata) {
1416 rc = -ENOMEM;
1417 goto out;
1418 }
1419 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1420 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1421 if (rc) {
1422 if (copy_to_user(udata, qinfo.udata, 4))
1423 rc = -EFAULT;
1424 goto free_and_out;
1425 }
1426 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1427
1428 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1429 }
1430 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1431 QETH_CARD_TEXT(card, 4, "qactf");
1432 rc = -EFAULT;
1433 goto free_and_out;
1434 }
1435 QETH_CARD_TEXT(card, 4, "qacts");
1436
1437free_and_out:
1438 kfree(qinfo.udata);
1439out:
1440 return rc;
1441}
1442
1443static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1444 struct qeth_arp_cache_entry *entry,
1445 enum qeth_arp_process_subcmds arp_cmd)
1446{
1447 struct qeth_arp_cache_entry *cmd_entry;
1448 struct qeth_cmd_buffer *iob;
1449 int rc;
1450
1451 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1452 QETH_CARD_TEXT(card, 3, "arpadd");
1453 else
1454 QETH_CARD_TEXT(card, 3, "arpdel");
1455
1456
1457
1458
1459
1460
1461 if (IS_VM_NIC(card))
1462 return -EOPNOTSUPP;
1463 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1464 return -EOPNOTSUPP;
1465 }
1466
1467 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1468 SETASS_DATA_SIZEOF(arp_entry),
1469 QETH_PROT_IPV4);
1470 if (!iob)
1471 return -ENOMEM;
1472
1473 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1474 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1475 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1476 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1477 if (rc)
1478 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1479 arp_cmd, CARD_DEVID(card), rc);
1480 return rc;
1481}
1482
1483static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1484{
1485 struct qeth_cmd_buffer *iob;
1486 int rc;
1487
1488 QETH_CARD_TEXT(card, 3, "arpflush");
1489
1490
1491
1492
1493
1494
1495 if (IS_VM_NIC(card) || IS_IQD(card))
1496 return -EOPNOTSUPP;
1497 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1498 return -EOPNOTSUPP;
1499 }
1500
1501 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1502 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1503 QETH_PROT_IPV4);
1504 if (!iob)
1505 return -ENOMEM;
1506
1507 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1508 if (rc)
1509 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1510 CARD_DEVID(card), rc);
1511 return rc;
1512}
1513
1514static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1515{
1516 struct qeth_card *card = dev->ml_priv;
1517 struct qeth_arp_cache_entry arp_entry;
1518 enum qeth_arp_process_subcmds arp_cmd;
1519 int rc = 0;
1520
1521 switch (cmd) {
1522 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1523 if (!capable(CAP_NET_ADMIN)) {
1524 rc = -EPERM;
1525 break;
1526 }
1527 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1528 break;
1529 case SIOC_QETH_ARP_QUERY_INFO:
1530 if (!capable(CAP_NET_ADMIN)) {
1531 rc = -EPERM;
1532 break;
1533 }
1534 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1535 break;
1536 case SIOC_QETH_ARP_ADD_ENTRY:
1537 case SIOC_QETH_ARP_REMOVE_ENTRY:
1538 if (!capable(CAP_NET_ADMIN))
1539 return -EPERM;
1540 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1541 return -EFAULT;
1542
1543 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1544 IPA_CMD_ASS_ARP_ADD_ENTRY :
1545 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1546 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1547 case SIOC_QETH_ARP_FLUSH_CACHE:
1548 if (!capable(CAP_NET_ADMIN)) {
1549 rc = -EPERM;
1550 break;
1551 }
1552 rc = qeth_l3_arp_flush_cache(card);
1553 break;
1554 default:
1555 rc = -EOPNOTSUPP;
1556 }
1557 return rc;
1558}
1559
1560static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1561 __be16 proto)
1562{
1563 struct neighbour *n = NULL;
1564
1565 if (dst)
1566 n = dst_neigh_lookup_skb(dst, skb);
1567
1568 if (n) {
1569 int cast_type = n->type;
1570
1571 neigh_release(n);
1572 if ((cast_type == RTN_BROADCAST) ||
1573 (cast_type == RTN_MULTICAST) ||
1574 (cast_type == RTN_ANYCAST))
1575 return cast_type;
1576 return RTN_UNICAST;
1577 }
1578
1579
1580 switch (proto) {
1581 case htons(ETH_P_IP):
1582 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1583 return RTN_BROADCAST;
1584 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1585 RTN_MULTICAST : RTN_UNICAST;
1586 case htons(ETH_P_IPV6):
1587 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1588 RTN_MULTICAST : RTN_UNICAST;
1589 case htons(ETH_P_AF_IUCV):
1590 return RTN_UNICAST;
1591 default:
1592
1593 return qeth_get_ether_cast_type(skb);
1594 }
1595}
1596
1597static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto)
1598{
1599 struct dst_entry *dst;
1600 int cast_type;
1601
1602 rcu_read_lock();
1603 dst = qeth_dst_check_rcu(skb, proto);
1604 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1605 rcu_read_unlock();
1606
1607 return cast_type;
1608}
1609
1610static u8 qeth_l3_cast_type_to_flag(int cast_type)
1611{
1612 if (cast_type == RTN_MULTICAST)
1613 return QETH_CAST_MULTICAST;
1614 if (cast_type == RTN_ANYCAST)
1615 return QETH_CAST_ANYCAST;
1616 if (cast_type == RTN_BROADCAST)
1617 return QETH_CAST_BROADCAST;
1618 return QETH_CAST_UNICAST;
1619}
1620
1621static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1622 struct qeth_hdr *hdr, struct sk_buff *skb,
1623 __be16 proto, unsigned int data_len)
1624{
1625 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1626 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1627 struct qeth_card *card = queue->card;
1628 struct dst_entry *dst;
1629 int cast_type;
1630
1631 hdr->hdr.l3.length = data_len;
1632
1633 if (skb_is_gso(skb)) {
1634 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1635 } else {
1636 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1637
1638 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1639 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto);
1640
1641 if (proto == htons(ETH_P_IP))
1642 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1643 }
1644 }
1645
1646 if (proto == htons(ETH_P_IP) || IS_IQD(card)) {
1647
1648 if (skb_vlan_tag_present(skb)) {
1649 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1650 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1651 }
1652 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1653 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1654 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1655 }
1656
1657 rcu_read_lock();
1658 dst = qeth_dst_check_rcu(skb, proto);
1659
1660 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1661 cast_type = RTN_UNICAST;
1662 else
1663 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1664 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1665
1666 switch (proto) {
1667 case htons(ETH_P_IP):
1668 l3_hdr->next_hop.addr.s6_addr32[3] =
1669 qeth_next_hop_v4_rcu(skb, dst);
1670 break;
1671 case htons(ETH_P_IPV6):
1672 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
1673
1674 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1675 if (!IS_IQD(card))
1676 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1677 break;
1678 case htons(ETH_P_AF_IUCV):
1679 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
1680 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
1681 iucv_trans_hdr(skb)->destUserID, 8);
1682 l3_hdr->flags |= QETH_HDR_IPV6;
1683 break;
1684 default:
1685
1686 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1687 }
1688 rcu_read_unlock();
1689}
1690
1691static void qeth_l3_fixup_headers(struct sk_buff *skb)
1692{
1693 struct iphdr *iph = ip_hdr(skb);
1694
1695
1696 if (skb->ip_summed == CHECKSUM_PARTIAL)
1697 iph->check = 0;
1698 if (skb_is_gso(skb)) {
1699 iph->tot_len = 0;
1700 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1701 iph->daddr, 0);
1702 }
1703}
1704
1705static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1706 struct qeth_qdio_out_q *queue, __be16 proto)
1707{
1708 unsigned int hw_hdr_len;
1709 int rc;
1710
1711
1712 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1713 sizeof(struct qeth_hdr);
1714 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1715 if (rc)
1716 return rc;
1717 skb_pull(skb, ETH_HLEN);
1718
1719 qeth_l3_fixup_headers(skb);
1720 return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1721}
1722
1723static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1724 struct net_device *dev)
1725{
1726 struct qeth_card *card = dev->ml_priv;
1727 __be16 proto = vlan_get_protocol(skb);
1728 u16 txq = skb_get_queue_mapping(skb);
1729 struct qeth_qdio_out_q *queue;
1730 int rc;
1731
1732 if (!skb_is_gso(skb))
1733 qdisc_skb_cb(skb)->pkt_len = skb->len;
1734 if (IS_IQD(card)) {
1735 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1736
1737 if (card->options.sniffer)
1738 goto tx_drop;
1739
1740 switch (proto) {
1741 case htons(ETH_P_AF_IUCV):
1742 if (card->options.cq != QETH_CQ_ENABLED)
1743 goto tx_drop;
1744 break;
1745 case htons(ETH_P_IP):
1746 case htons(ETH_P_IPV6):
1747 if (card->options.cq == QETH_CQ_ENABLED)
1748 goto tx_drop;
1749 break;
1750 default:
1751 goto tx_drop;
1752 }
1753 } else {
1754 queue = card->qdio.out_qs[txq];
1755 }
1756
1757 if (!(dev->flags & IFF_BROADCAST) &&
1758 qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST)
1759 goto tx_drop;
1760
1761 if (proto == htons(ETH_P_IP) || IS_IQD(card))
1762 rc = qeth_l3_xmit(card, skb, queue, proto);
1763 else
1764 rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1765
1766 if (!rc)
1767 return NETDEV_TX_OK;
1768
1769tx_drop:
1770 QETH_TXQ_STAT_INC(queue, tx_dropped);
1771 kfree_skb(skb);
1772 return NETDEV_TX_OK;
1773}
1774
1775static void qeth_l3_set_rx_mode(struct net_device *dev)
1776{
1777 struct qeth_card *card = dev->ml_priv;
1778
1779 schedule_work(&card->rx_mode_work);
1780}
1781
1782
1783
1784
1785
1786
1787
1788
1789static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1790{
1791 n->nud_state = NUD_NOARP;
1792 memcpy(n->ha, "FAKELL", 6);
1793 n->output = n->ops->connected_output;
1794 return 0;
1795}
1796
1797static int
1798qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1799{
1800 if (np->tbl->family == AF_INET)
1801 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1802
1803 return 0;
1804}
1805
1806static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1807 struct net_device *dev,
1808 netdev_features_t features)
1809{
1810 if (vlan_get_protocol(skb) != htons(ETH_P_IP))
1811 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1812 return qeth_features_check(skb, dev, features);
1813}
1814
1815static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1816 struct net_device *sb_dev)
1817{
1818 __be16 proto = vlan_get_protocol(skb);
1819
1820 return qeth_iqd_select_queue(dev, skb,
1821 qeth_l3_get_cast_type(skb, proto), sb_dev);
1822}
1823
1824static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
1825 struct net_device *sb_dev)
1826{
1827 struct qeth_card *card = dev->ml_priv;
1828
1829 if (qeth_uses_tx_prio_queueing(card))
1830 return qeth_get_priority_queue(card, skb);
1831
1832 return netdev_pick_tx(dev, skb, sb_dev);
1833}
1834
1835static const struct net_device_ops qeth_l3_netdev_ops = {
1836 .ndo_open = qeth_open,
1837 .ndo_stop = qeth_stop,
1838 .ndo_get_stats64 = qeth_get_stats64,
1839 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1840 .ndo_select_queue = qeth_l3_iqd_select_queue,
1841 .ndo_validate_addr = eth_validate_addr,
1842 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1843 .ndo_do_ioctl = qeth_do_ioctl,
1844 .ndo_fix_features = qeth_fix_features,
1845 .ndo_set_features = qeth_set_features,
1846 .ndo_tx_timeout = qeth_tx_timeout,
1847};
1848
1849static const struct net_device_ops qeth_l3_osa_netdev_ops = {
1850 .ndo_open = qeth_open,
1851 .ndo_stop = qeth_stop,
1852 .ndo_get_stats64 = qeth_get_stats64,
1853 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1854 .ndo_features_check = qeth_l3_osa_features_check,
1855 .ndo_select_queue = qeth_l3_osa_select_queue,
1856 .ndo_validate_addr = eth_validate_addr,
1857 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1858 .ndo_do_ioctl = qeth_do_ioctl,
1859 .ndo_fix_features = qeth_fix_features,
1860 .ndo_set_features = qeth_set_features,
1861 .ndo_tx_timeout = qeth_tx_timeout,
1862 .ndo_neigh_setup = qeth_l3_neigh_setup,
1863};
1864
1865static int qeth_l3_setup_netdev(struct qeth_card *card)
1866{
1867 struct net_device *dev = card->dev;
1868 unsigned int headroom;
1869 int rc;
1870
1871 if (IS_OSD(card) || IS_OSX(card)) {
1872 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
1873
1874
1875 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
1876
1877 if (!IS_VM_NIC(card)) {
1878 card->dev->features |= NETIF_F_SG;
1879 card->dev->hw_features |= NETIF_F_TSO |
1880 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1881 card->dev->vlan_features |= NETIF_F_TSO |
1882 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1883 }
1884
1885 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1886 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1887 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1888 }
1889 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1890 card->dev->hw_features |= NETIF_F_TSO6;
1891 card->dev->vlan_features |= NETIF_F_TSO6;
1892 }
1893
1894
1895 if (card->dev->hw_features & NETIF_F_TSO6)
1896 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
1897 else if (card->dev->hw_features & NETIF_F_TSO)
1898 headroom = sizeof(struct qeth_hdr_tso);
1899 else
1900 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
1901 } else if (IS_IQD(card)) {
1902 card->dev->flags |= IFF_NOARP;
1903 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1904 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
1905
1906 rc = qeth_l3_iqd_read_initial_mac(card);
1907 if (rc)
1908 return rc;
1909 } else
1910 return -ENODEV;
1911
1912 card->dev->needed_headroom = headroom;
1913 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1914 NETIF_F_HW_VLAN_CTAG_RX;
1915
1916 netif_keep_dst(card->dev);
1917 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
1918 netif_set_gso_max_size(card->dev,
1919 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
1920
1921 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1922 return register_netdev(card->dev);
1923}
1924
1925static const struct device_type qeth_l3_devtype = {
1926 .name = "qeth_layer3",
1927 .groups = qeth_l3_attr_groups,
1928};
1929
1930static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
1931{
1932 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1933 int rc;
1934
1935 hash_init(card->ip_htable);
1936 mutex_init(&card->ip_lock);
1937 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
1938 dev_name(&gdev->dev));
1939 if (!card->cmd_wq)
1940 return -ENOMEM;
1941
1942 if (gdev->dev.type == &qeth_generic_devtype) {
1943 rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups);
1944 if (rc) {
1945 destroy_workqueue(card->cmd_wq);
1946 return rc;
1947 }
1948 }
1949
1950 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
1951 return 0;
1952}
1953
1954static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
1955{
1956 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1957
1958 if (cgdev->dev.type == &qeth_generic_devtype)
1959 device_remove_groups(&cgdev->dev, qeth_l3_attr_groups);
1960
1961 qeth_set_allowed_threads(card, 0, 1);
1962 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1963
1964 if (cgdev->state == CCWGROUP_ONLINE)
1965 qeth_set_offline(card, card->discipline, false);
1966
1967 cancel_work_sync(&card->close_dev_work);
1968 if (card->dev->reg_state == NETREG_REGISTERED)
1969 unregister_netdev(card->dev);
1970
1971 flush_workqueue(card->cmd_wq);
1972 destroy_workqueue(card->cmd_wq);
1973 qeth_l3_clear_ip_htable(card, 0);
1974 qeth_l3_clear_ipato_list(card);
1975}
1976
1977static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok)
1978{
1979 struct net_device *dev = card->dev;
1980 int rc = 0;
1981
1982
1983 QETH_CARD_TEXT(card, 2, "softsetp");
1984
1985 rc = qeth_l3_setadapter_parms(card);
1986 if (rc)
1987 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
1988 if (!card->options.sniffer) {
1989 qeth_l3_start_ipassists(card);
1990
1991 rc = qeth_l3_setrouting_v4(card);
1992 if (rc)
1993 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
1994 rc = qeth_l3_setrouting_v6(card);
1995 if (rc)
1996 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
1997 }
1998
1999 card->state = CARD_STATE_SOFTSETUP;
2000
2001 qeth_set_allowed_threads(card, 0xffffffff, 0);
2002 qeth_l3_recover_ip(card);
2003
2004 if (dev->reg_state != NETREG_REGISTERED) {
2005 rc = qeth_l3_setup_netdev(card);
2006 if (rc)
2007 goto err_setup;
2008
2009 if (carrier_ok)
2010 netif_carrier_on(dev);
2011 } else {
2012 rtnl_lock();
2013 rc = qeth_set_real_num_tx_queues(card,
2014 qeth_tx_actual_queues(card));
2015 if (rc) {
2016 rtnl_unlock();
2017 goto err_set_queues;
2018 }
2019
2020 if (carrier_ok)
2021 netif_carrier_on(dev);
2022 else
2023 netif_carrier_off(dev);
2024
2025 netif_device_attach(dev);
2026 qeth_enable_hw_features(dev);
2027
2028 if (card->info.open_when_online) {
2029 card->info.open_when_online = 0;
2030 dev_open(dev, NULL);
2031 }
2032 rtnl_unlock();
2033 }
2034 return 0;
2035
2036err_set_queues:
2037err_setup:
2038 qeth_set_allowed_threads(card, 0, 1);
2039 card->state = CARD_STATE_DOWN;
2040 qeth_l3_clear_ip_htable(card, 1);
2041 return rc;
2042}
2043
2044static void qeth_l3_set_offline(struct qeth_card *card)
2045{
2046 qeth_set_allowed_threads(card, 0, 1);
2047 qeth_l3_drain_rx_mode_cache(card);
2048
2049 if (card->options.sniffer &&
2050 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2051 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2052
2053 if (card->state == CARD_STATE_SOFTSETUP) {
2054 card->state = CARD_STATE_DOWN;
2055 qeth_l3_clear_ip_htable(card, 1);
2056 }
2057}
2058
2059
2060static int qeth_l3_control_event(struct qeth_card *card,
2061 struct qeth_ipa_cmd *cmd)
2062{
2063 return 1;
2064}
2065
2066const struct qeth_discipline qeth_l3_discipline = {
2067 .devtype = &qeth_l3_devtype,
2068 .setup = qeth_l3_probe_device,
2069 .remove = qeth_l3_remove_device,
2070 .set_online = qeth_l3_set_online,
2071 .set_offline = qeth_l3_set_offline,
2072 .do_ioctl = qeth_l3_do_ioctl,
2073 .control_event_handler = qeth_l3_control_event,
2074};
2075EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2076
2077static int qeth_l3_handle_ip_event(struct qeth_card *card,
2078 struct qeth_ipaddr *addr,
2079 unsigned long event)
2080{
2081 switch (event) {
2082 case NETDEV_UP:
2083 qeth_l3_modify_ip(card, addr, true);
2084 return NOTIFY_OK;
2085 case NETDEV_DOWN:
2086 qeth_l3_modify_ip(card, addr, false);
2087 return NOTIFY_OK;
2088 default:
2089 return NOTIFY_DONE;
2090 }
2091}
2092
2093struct qeth_l3_ip_event_work {
2094 struct work_struct work;
2095 struct qeth_card *card;
2096 struct qeth_ipaddr addr;
2097};
2098
2099#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2100
2101static void qeth_l3_add_ip_worker(struct work_struct *work)
2102{
2103 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2104
2105 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2106 kfree(work);
2107}
2108
2109static void qeth_l3_delete_ip_worker(struct work_struct *work)
2110{
2111 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2112
2113 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2114 kfree(work);
2115}
2116
2117static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2118{
2119 if (is_vlan_dev(dev))
2120 dev = vlan_dev_real_dev(dev);
2121 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2122 dev->netdev_ops == &qeth_l3_netdev_ops)
2123 return (struct qeth_card *) dev->ml_priv;
2124 return NULL;
2125}
2126
2127static int qeth_l3_ip_event(struct notifier_block *this,
2128 unsigned long event, void *ptr)
2129{
2130 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2131 struct net_device *dev = ifa->ifa_dev->dev;
2132 struct qeth_ipaddr addr;
2133 struct qeth_card *card;
2134
2135 card = qeth_l3_get_card_from_dev(dev);
2136 if (!card)
2137 return NOTIFY_DONE;
2138 QETH_CARD_TEXT(card, 3, "ipevent");
2139
2140 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2141 addr.u.a4.addr = ifa->ifa_address;
2142 addr.u.a4.mask = ifa->ifa_mask;
2143
2144 return qeth_l3_handle_ip_event(card, &addr, event);
2145}
2146
2147static struct notifier_block qeth_l3_ip_notifier = {
2148 qeth_l3_ip_event,
2149 NULL,
2150};
2151
2152static int qeth_l3_ip6_event(struct notifier_block *this,
2153 unsigned long event, void *ptr)
2154{
2155 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2156 struct net_device *dev = ifa->idev->dev;
2157 struct qeth_l3_ip_event_work *ip_work;
2158 struct qeth_card *card;
2159
2160 if (event != NETDEV_UP && event != NETDEV_DOWN)
2161 return NOTIFY_DONE;
2162
2163 card = qeth_l3_get_card_from_dev(dev);
2164 if (!card)
2165 return NOTIFY_DONE;
2166 QETH_CARD_TEXT(card, 3, "ip6event");
2167 if (!qeth_is_supported(card, IPA_IPV6))
2168 return NOTIFY_DONE;
2169
2170 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2171 if (!ip_work)
2172 return NOTIFY_DONE;
2173
2174 if (event == NETDEV_UP)
2175 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2176 else
2177 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2178
2179 ip_work->card = card;
2180 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2181 QETH_PROT_IPV6);
2182 ip_work->addr.u.a6.addr = ifa->addr;
2183 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2184
2185 queue_work(card->cmd_wq, &ip_work->work);
2186 return NOTIFY_OK;
2187}
2188
2189static struct notifier_block qeth_l3_ip6_notifier = {
2190 qeth_l3_ip6_event,
2191 NULL,
2192};
2193
2194static int qeth_l3_register_notifiers(void)
2195{
2196 int rc;
2197
2198 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2199 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2200 if (rc)
2201 return rc;
2202 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2203 if (rc) {
2204 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2205 return rc;
2206 }
2207 return 0;
2208}
2209
2210static void qeth_l3_unregister_notifiers(void)
2211{
2212 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2213 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2214 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2215}
2216
2217static int __init qeth_l3_init(void)
2218{
2219 pr_info("register layer 3 discipline\n");
2220 return qeth_l3_register_notifiers();
2221}
2222
2223static void __exit qeth_l3_exit(void)
2224{
2225 qeth_l3_unregister_notifiers();
2226 pr_info("unregister layer 3 discipline\n");
2227}
2228
2229module_init(qeth_l3_init);
2230module_exit(qeth_l3_exit);
2231MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2232MODULE_DESCRIPTION("qeth layer 3 discipline");
2233MODULE_LICENSE("GPL");
2234
