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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 if (addr->proto == QETH_PROT_IPV4)
108 rc = !memcmp(addr_bits, ipatoe_bits,
109 min(32, ipatoe->mask_bits));
110 else
111 rc = !memcmp(addr_bits, ipatoe_bits,
112 min(128, ipatoe->mask_bits));
113 if (rc)
114 break;
115 }
116
117 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
118 rc = !rc;
119 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
120 rc = !rc;
121
122 return rc;
123}
124
125static int qeth_l3_delete_ip(struct qeth_card *card,
126 struct qeth_ipaddr *tmp_addr)
127{
128 int rc = 0;
129 struct qeth_ipaddr *addr;
130
131 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
132 QETH_CARD_TEXT(card, 2, "delrxip");
133 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
134 QETH_CARD_TEXT(card, 2, "delvipa");
135 else
136 QETH_CARD_TEXT(card, 2, "delip");
137
138 if (tmp_addr->proto == QETH_PROT_IPV4)
139 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
140 else {
141 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
142 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
143 }
144
145 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
146 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
147 return -ENOENT;
148
149 addr->ref_counter--;
150 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
151 return rc;
152
153 if (qeth_card_hw_is_reachable(card))
154 rc = qeth_l3_deregister_addr_entry(card, addr);
155
156 hash_del(&addr->hnode);
157 kfree(addr);
158
159 return rc;
160}
161
162static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
163{
164 int rc = 0;
165 struct qeth_ipaddr *addr;
166 char buf[40];
167
168 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
169 QETH_CARD_TEXT(card, 2, "addrxip");
170 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
171 QETH_CARD_TEXT(card, 2, "addvipa");
172 else
173 QETH_CARD_TEXT(card, 2, "addip");
174
175 if (tmp_addr->proto == QETH_PROT_IPV4)
176 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
177 else {
178 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
179 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
180 }
181
182 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
183 if (addr) {
184 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
185 return -EADDRINUSE;
186 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
187 addr->ref_counter++;
188 return 0;
189 }
190 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
191 buf);
192 dev_warn(&card->gdev->dev,
193 "Registering IP address %s failed\n", buf);
194 return -EADDRINUSE;
195 } else {
196 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
197 if (!addr)
198 return -ENOMEM;
199
200 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
201 QETH_CARD_TEXT(card, 2, "tkovaddr");
202 addr->ipato = 1;
203 }
204 hash_add(card->ip_htable, &addr->hnode,
205 qeth_l3_ipaddr_hash(addr));
206
207 if (!qeth_card_hw_is_reachable(card)) {
208 addr->disp_flag = QETH_DISP_ADDR_ADD;
209 return 0;
210 }
211
212 rc = qeth_l3_register_addr_entry(card, addr);
213
214 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
215 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
216 } else {
217 hash_del(&addr->hnode);
218 kfree(addr);
219 }
220 }
221 return rc;
222}
223
224static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
225 bool add)
226{
227 int rc;
228
229 mutex_lock(&card->ip_lock);
230 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
231 mutex_unlock(&card->ip_lock);
232
233 return rc;
234}
235
236static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
237{
238 struct qeth_ipaddr *addr;
239 struct hlist_node *tmp;
240 int i;
241
242 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
243 hash_del(&addr->hnode);
244 kfree(addr);
245 }
246}
247
248static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
249{
250 struct qeth_ipaddr *addr;
251 struct hlist_node *tmp;
252 int i;
253
254 QETH_CARD_TEXT(card, 4, "clearip");
255
256 mutex_lock(&card->ip_lock);
257
258 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
259 if (!recover) {
260 hash_del(&addr->hnode);
261 kfree(addr);
262 continue;
263 }
264 addr->disp_flag = QETH_DISP_ADDR_ADD;
265 }
266
267 mutex_unlock(&card->ip_lock);
268}
269
270static void qeth_l3_recover_ip(struct qeth_card *card)
271{
272 struct qeth_ipaddr *addr;
273 struct hlist_node *tmp;
274 int i;
275 int rc;
276
277 QETH_CARD_TEXT(card, 4, "recovrip");
278
279 mutex_lock(&card->ip_lock);
280
281 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
282 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
283 rc = qeth_l3_register_addr_entry(card, addr);
284
285 if (!rc) {
286 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
287 } else {
288 hash_del(&addr->hnode);
289 kfree(addr);
290 }
291 }
292 }
293
294 mutex_unlock(&card->ip_lock);
295}
296
297static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
298 unsigned long data)
299{
300 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
301
302 switch (cmd->hdr.return_code) {
303 case IPA_RC_SUCCESS:
304 return 0;
305 case IPA_RC_DUPLICATE_IP_ADDRESS:
306 return -EADDRINUSE;
307 case IPA_RC_MC_ADDR_NOT_FOUND:
308 return -ENOENT;
309 case IPA_RC_LAN_OFFLINE:
310 return -ENETDOWN;
311 default:
312 return -EIO;
313 }
314}
315
316static int qeth_l3_send_setdelmc(struct qeth_card *card,
317 struct qeth_ipaddr *addr, int ipacmd)
318{
319 struct qeth_cmd_buffer *iob;
320 struct qeth_ipa_cmd *cmd;
321
322 QETH_CARD_TEXT(card, 4, "setdelmc");
323
324 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
325 IPA_DATA_SIZEOF(setdelipm));
326 if (!iob)
327 return -ENOMEM;
328 cmd = __ipa_cmd(iob);
329 if (addr->proto == QETH_PROT_IPV6) {
330 cmd->data.setdelipm.ip = addr->u.a6.addr;
331 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
332 } else {
333 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
334 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
335 }
336
337 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
338}
339
340static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len)
341{
342 unsigned int i = 0;
343
344 while (len && i < 4) {
345 int mask_len = min_t(int, len, 32);
346
347 prefix->s6_addr32[i] = inet_make_mask(mask_len);
348 len -= mask_len;
349 i++;
350 }
351}
352
353static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
354{
355 switch (addr->type) {
356 case QETH_IP_TYPE_RXIP:
357 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
358 case QETH_IP_TYPE_VIPA:
359 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
360 QETH_IPA_DELIP_VIPA_FLAG;
361 default:
362 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
363 }
364}
365
366static int qeth_l3_send_setdelip(struct qeth_card *card,
367 struct qeth_ipaddr *addr,
368 enum qeth_ipa_cmds ipacmd)
369{
370 struct qeth_cmd_buffer *iob;
371 struct qeth_ipa_cmd *cmd;
372 u32 flags;
373
374 QETH_CARD_TEXT(card, 4, "setdelip");
375
376 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
377 IPA_DATA_SIZEOF(setdelip6));
378 if (!iob)
379 return -ENOMEM;
380 cmd = __ipa_cmd(iob);
381
382 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
383 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
384
385 if (addr->proto == QETH_PROT_IPV6) {
386 cmd->data.setdelip6.addr = addr->u.a6.addr;
387 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix,
388 addr->u.a6.pfxlen);
389 cmd->data.setdelip6.flags = flags;
390 } else {
391 cmd->data.setdelip4.addr = addr->u.a4.addr;
392 cmd->data.setdelip4.mask = addr->u.a4.mask;
393 cmd->data.setdelip4.flags = flags;
394 }
395
396 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
397}
398
399static int qeth_l3_send_setrouting(struct qeth_card *card,
400 enum qeth_routing_types type, enum qeth_prot_versions prot)
401{
402 int rc;
403 struct qeth_ipa_cmd *cmd;
404 struct qeth_cmd_buffer *iob;
405
406 QETH_CARD_TEXT(card, 4, "setroutg");
407 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
408 IPA_DATA_SIZEOF(setrtg));
409 if (!iob)
410 return -ENOMEM;
411 cmd = __ipa_cmd(iob);
412 cmd->data.setrtg.type = (type);
413 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
414
415 return rc;
416}
417
418static int qeth_l3_correct_routing_type(struct qeth_card *card,
419 enum qeth_routing_types *type, enum qeth_prot_versions prot)
420{
421 if (IS_IQD(card)) {
422 switch (*type) {
423 case NO_ROUTER:
424 case PRIMARY_CONNECTOR:
425 case SECONDARY_CONNECTOR:
426 case MULTICAST_ROUTER:
427 return 0;
428 default:
429 goto out_inval;
430 }
431 } else {
432 switch (*type) {
433 case NO_ROUTER:
434 case PRIMARY_ROUTER:
435 case SECONDARY_ROUTER:
436 return 0;
437 case MULTICAST_ROUTER:
438 if (qeth_is_ipafunc_supported(card, prot,
439 IPA_OSA_MC_ROUTER))
440 return 0;
441 default:
442 goto out_inval;
443 }
444 }
445out_inval:
446 *type = NO_ROUTER;
447 return -EINVAL;
448}
449
450int qeth_l3_setrouting_v4(struct qeth_card *card)
451{
452 int rc;
453
454 QETH_CARD_TEXT(card, 3, "setrtg4");
455
456 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
457 QETH_PROT_IPV4);
458 if (rc)
459 return rc;
460
461 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
462 QETH_PROT_IPV4);
463 if (rc) {
464 card->options.route4.type = NO_ROUTER;
465 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
466 rc, CARD_DEVID(card));
467 }
468 return rc;
469}
470
471int qeth_l3_setrouting_v6(struct qeth_card *card)
472{
473 int rc = 0;
474
475 QETH_CARD_TEXT(card, 3, "setrtg6");
476
477 if (!qeth_is_supported(card, IPA_IPV6))
478 return 0;
479 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
480 QETH_PROT_IPV6);
481 if (rc)
482 return rc;
483
484 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
485 QETH_PROT_IPV6);
486 if (rc) {
487 card->options.route6.type = NO_ROUTER;
488 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
489 rc, CARD_DEVID(card));
490 }
491 return rc;
492}
493
494
495
496
497
498
499
500
501
502
503void qeth_l3_update_ipato(struct qeth_card *card)
504{
505 struct qeth_ipaddr *addr;
506 unsigned int i;
507
508 hash_for_each(card->ip_htable, i, addr, hnode) {
509 if (addr->type != QETH_IP_TYPE_NORMAL)
510 continue;
511 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
512 }
513}
514
515static void qeth_l3_clear_ipato_list(struct qeth_card *card)
516{
517 struct qeth_ipato_entry *ipatoe, *tmp;
518
519 mutex_lock(&card->ip_lock);
520
521 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
522 list_del(&ipatoe->entry);
523 kfree(ipatoe);
524 }
525
526 qeth_l3_update_ipato(card);
527 mutex_unlock(&card->ip_lock);
528}
529
530int qeth_l3_add_ipato_entry(struct qeth_card *card,
531 struct qeth_ipato_entry *new)
532{
533 struct qeth_ipato_entry *ipatoe;
534 int rc = 0;
535
536 QETH_CARD_TEXT(card, 2, "addipato");
537
538 mutex_lock(&card->conf_mutex);
539 mutex_lock(&card->ip_lock);
540
541 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
542 if (ipatoe->proto != new->proto)
543 continue;
544 if (!memcmp(ipatoe->addr, new->addr,
545 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
546 (ipatoe->mask_bits == new->mask_bits)) {
547 rc = -EEXIST;
548 break;
549 }
550 }
551
552 if (!rc) {
553 list_add_tail(&new->entry, &card->ipato.entries);
554 qeth_l3_update_ipato(card);
555 }
556
557 mutex_unlock(&card->ip_lock);
558 mutex_unlock(&card->conf_mutex);
559
560 return rc;
561}
562
563int qeth_l3_del_ipato_entry(struct qeth_card *card,
564 enum qeth_prot_versions proto, u8 *addr,
565 int mask_bits)
566{
567 struct qeth_ipato_entry *ipatoe, *tmp;
568 int rc = -ENOENT;
569
570 QETH_CARD_TEXT(card, 2, "delipato");
571
572 mutex_lock(&card->conf_mutex);
573 mutex_lock(&card->ip_lock);
574
575 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
576 if (ipatoe->proto != proto)
577 continue;
578 if (!memcmp(ipatoe->addr, addr,
579 (proto == QETH_PROT_IPV4)? 4:16) &&
580 (ipatoe->mask_bits == mask_bits)) {
581 list_del(&ipatoe->entry);
582 qeth_l3_update_ipato(card);
583 kfree(ipatoe);
584 rc = 0;
585 }
586 }
587
588 mutex_unlock(&card->ip_lock);
589 mutex_unlock(&card->conf_mutex);
590
591 return rc;
592}
593
594int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
595 enum qeth_ip_types type,
596 enum qeth_prot_versions proto)
597{
598 struct qeth_ipaddr addr;
599 int rc;
600
601 qeth_l3_init_ipaddr(&addr, type, proto);
602 if (proto == QETH_PROT_IPV4)
603 memcpy(&addr.u.a4.addr, ip, 4);
604 else
605 memcpy(&addr.u.a6.addr, ip, 16);
606
607 mutex_lock(&card->conf_mutex);
608 rc = qeth_l3_modify_ip(card, &addr, add);
609 mutex_unlock(&card->conf_mutex);
610
611 return rc;
612}
613
614int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
615{
616 struct qeth_ipaddr addr;
617 unsigned int i;
618
619 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
620 addr.u.a6.addr.s6_addr[0] = 0xfe;
621 addr.u.a6.addr.s6_addr[1] = 0x80;
622 for (i = 0; i < 8; i++)
623 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
624
625 return qeth_l3_modify_ip(card, &addr, add);
626}
627
628static int qeth_l3_register_addr_entry(struct qeth_card *card,
629 struct qeth_ipaddr *addr)
630{
631 char buf[50];
632 int rc = 0;
633 int cnt = 3;
634
635 if (card->options.sniffer)
636 return 0;
637
638 if (addr->proto == QETH_PROT_IPV4) {
639 QETH_CARD_TEXT(card, 2, "setaddr4");
640 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
641 } else if (addr->proto == QETH_PROT_IPV6) {
642 QETH_CARD_TEXT(card, 2, "setaddr6");
643 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
644 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
645 } else {
646 QETH_CARD_TEXT(card, 2, "setaddr?");
647 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
648 }
649 do {
650 if (addr->is_multicast)
651 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
652 else
653 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
654 if (rc)
655 QETH_CARD_TEXT(card, 2, "failed");
656 } while ((--cnt > 0) && rc);
657 if (rc) {
658 QETH_CARD_TEXT(card, 2, "FAILED");
659 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
660 dev_warn(&card->gdev->dev,
661 "Registering IP address %s failed\n", buf);
662 }
663 return rc;
664}
665
666static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
667 struct qeth_ipaddr *addr)
668{
669 int rc = 0;
670
671 if (card->options.sniffer)
672 return 0;
673
674 if (addr->proto == QETH_PROT_IPV4) {
675 QETH_CARD_TEXT(card, 2, "deladdr4");
676 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
677 } else if (addr->proto == QETH_PROT_IPV6) {
678 QETH_CARD_TEXT(card, 2, "deladdr6");
679 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
680 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
681 } else {
682 QETH_CARD_TEXT(card, 2, "deladdr?");
683 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
684 }
685 if (addr->is_multicast)
686 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
687 else
688 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
689 if (rc)
690 QETH_CARD_TEXT(card, 2, "failed");
691
692 return rc;
693}
694
695static int qeth_l3_setadapter_parms(struct qeth_card *card)
696{
697 int rc = 0;
698
699 QETH_CARD_TEXT(card, 2, "setadprm");
700
701 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
702 rc = qeth_setadpparms_change_macaddr(card);
703 if (rc)
704 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
705 " address failed\n");
706 }
707
708 return rc;
709}
710
711static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
712{
713 int rc;
714
715 QETH_CARD_TEXT(card, 3, "ipaarp");
716
717 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
718 dev_info(&card->gdev->dev,
719 "ARP processing not supported on %s!\n",
720 QETH_CARD_IFNAME(card));
721 return 0;
722 }
723 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
724 IPA_CMD_ASS_START, NULL);
725 if (rc) {
726 dev_warn(&card->gdev->dev,
727 "Starting ARP processing support for %s failed\n",
728 QETH_CARD_IFNAME(card));
729 }
730 return rc;
731}
732
733static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
734{
735 int rc;
736
737 QETH_CARD_TEXT(card, 3, "stsrcmac");
738
739 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
740 dev_info(&card->gdev->dev,
741 "Inbound source MAC-address not supported on %s\n",
742 QETH_CARD_IFNAME(card));
743 return -EOPNOTSUPP;
744 }
745
746 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
747 IPA_CMD_ASS_START, NULL);
748 if (rc)
749 dev_warn(&card->gdev->dev,
750 "Starting source MAC-address support for %s failed\n",
751 QETH_CARD_IFNAME(card));
752 return rc;
753}
754
755static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
756{
757 int rc = 0;
758
759 QETH_CARD_TEXT(card, 3, "strtvlan");
760
761 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
762 dev_info(&card->gdev->dev,
763 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
764 return -EOPNOTSUPP;
765 }
766
767 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
768 IPA_CMD_ASS_START, NULL);
769 if (rc) {
770 dev_warn(&card->gdev->dev,
771 "Starting VLAN support for %s failed\n",
772 QETH_CARD_IFNAME(card));
773 } else {
774 dev_info(&card->gdev->dev, "VLAN enabled\n");
775 }
776 return rc;
777}
778
779static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
780{
781 int rc;
782
783 QETH_CARD_TEXT(card, 3, "stmcast");
784
785 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
786 dev_info(&card->gdev->dev,
787 "Multicast not supported on %s\n",
788 QETH_CARD_IFNAME(card));
789 return -EOPNOTSUPP;
790 }
791
792 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
793 IPA_CMD_ASS_START, NULL);
794 if (rc) {
795 dev_warn(&card->gdev->dev,
796 "Starting multicast support for %s failed\n",
797 QETH_CARD_IFNAME(card));
798 } else {
799 dev_info(&card->gdev->dev, "Multicast enabled\n");
800 card->dev->flags |= IFF_MULTICAST;
801 }
802 return rc;
803}
804
805static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
806{
807 u32 ipv6_data = 3;
808 int rc;
809
810 QETH_CARD_TEXT(card, 3, "softipv6");
811
812 if (IS_IQD(card))
813 goto out;
814
815 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
816 &ipv6_data);
817 if (rc) {
818 dev_err(&card->gdev->dev,
819 "Activating IPv6 support for %s failed\n",
820 QETH_CARD_IFNAME(card));
821 return rc;
822 }
823 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
824 NULL);
825 if (rc) {
826 dev_err(&card->gdev->dev,
827 "Activating IPv6 support for %s failed\n",
828 QETH_CARD_IFNAME(card));
829 return rc;
830 }
831 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
832 IPA_CMD_ASS_START, NULL);
833 if (rc) {
834 dev_warn(&card->gdev->dev,
835 "Enabling the passthrough mode for %s failed\n",
836 QETH_CARD_IFNAME(card));
837 return rc;
838 }
839out:
840 dev_info(&card->gdev->dev, "IPV6 enabled\n");
841 return 0;
842}
843
844static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
845{
846 QETH_CARD_TEXT(card, 3, "strtipv6");
847
848 if (!qeth_is_supported(card, IPA_IPV6)) {
849 dev_info(&card->gdev->dev,
850 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
851 return 0;
852 }
853 return qeth_l3_softsetup_ipv6(card);
854}
855
856static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
857{
858 u32 filter_data = 1;
859 int rc;
860
861 QETH_CARD_TEXT(card, 3, "stbrdcst");
862 card->info.broadcast_capable = 0;
863 if (!qeth_is_supported(card, IPA_FILTERING)) {
864 dev_info(&card->gdev->dev,
865 "Broadcast not supported on %s\n",
866 QETH_CARD_IFNAME(card));
867 rc = -EOPNOTSUPP;
868 goto out;
869 }
870 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
871 IPA_CMD_ASS_START, NULL);
872 if (rc) {
873 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
874 "%s failed\n", QETH_CARD_IFNAME(card));
875 goto out;
876 }
877
878 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
879 IPA_CMD_ASS_CONFIGURE, &filter_data);
880 if (rc) {
881 dev_warn(&card->gdev->dev,
882 "Setting up broadcast filtering for %s failed\n",
883 QETH_CARD_IFNAME(card));
884 goto out;
885 }
886 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
887 dev_info(&card->gdev->dev, "Broadcast enabled\n");
888 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
889 IPA_CMD_ASS_ENABLE, &filter_data);
890 if (rc) {
891 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
892 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
893 goto out;
894 }
895 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
896out:
897 if (card->info.broadcast_capable)
898 card->dev->flags |= IFF_BROADCAST;
899 else
900 card->dev->flags &= ~IFF_BROADCAST;
901 return rc;
902}
903
904static void qeth_l3_start_ipassists(struct qeth_card *card)
905{
906 QETH_CARD_TEXT(card, 3, "strtipas");
907
908 qeth_l3_start_ipa_arp_processing(card);
909 qeth_l3_start_ipa_source_mac(card);
910 qeth_l3_start_ipa_vlan(card);
911 qeth_l3_start_ipa_multicast(card);
912 qeth_l3_start_ipa_ipv6(card);
913 qeth_l3_start_ipa_broadcast(card);
914}
915
916static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
917 struct qeth_reply *reply, unsigned long data)
918{
919 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
920
921 if (cmd->hdr.return_code)
922 return -EIO;
923 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
924 return -EADDRNOTAVAIL;
925
926 ether_addr_copy(card->dev->dev_addr,
927 cmd->data.create_destroy_addr.mac_addr);
928 return 0;
929}
930
931static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
932{
933 int rc = 0;
934 struct qeth_cmd_buffer *iob;
935
936 QETH_CARD_TEXT(card, 2, "hsrmac");
937
938 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
939 IPA_DATA_SIZEOF(create_destroy_addr));
940 if (!iob)
941 return -ENOMEM;
942
943 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
944 NULL);
945 return rc;
946}
947
948static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
949 struct qeth_reply *reply, unsigned long data)
950{
951 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
952 u16 *uid = reply->param;
953
954 if (cmd->hdr.return_code == 0) {
955 *uid = cmd->data.create_destroy_addr.uid;
956 return 0;
957 }
958
959 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
960 return -EIO;
961}
962
963static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid)
964{
965 struct qeth_cmd_buffer *iob;
966
967 QETH_CARD_TEXT(card, 2, "guniqeid");
968
969 if (!qeth_is_supported(card, IPA_IPV6))
970 goto out;
971
972 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
973 IPA_DATA_SIZEOF(create_destroy_addr));
974 if (!iob)
975 goto out;
976
977 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid;
978 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid);
979
980out:
981 return uid;
982}
983
984static int
985qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
986 unsigned long data)
987{
988 struct qeth_ipa_cmd *cmd;
989 __u16 rc;
990
991 QETH_CARD_TEXT(card, 2, "diastrcb");
992
993 cmd = (struct qeth_ipa_cmd *)data;
994 rc = cmd->hdr.return_code;
995 if (rc)
996 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
997 switch (cmd->data.diagass.action) {
998 case QETH_DIAGS_CMD_TRACE_QUERY:
999 break;
1000 case QETH_DIAGS_CMD_TRACE_DISABLE:
1001 switch (rc) {
1002 case 0:
1003 case IPA_RC_INVALID_SUBCMD:
1004 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1005 dev_info(&card->gdev->dev, "The HiperSockets network "
1006 "traffic analyzer is deactivated\n");
1007 break;
1008 default:
1009 break;
1010 }
1011 break;
1012 case QETH_DIAGS_CMD_TRACE_ENABLE:
1013 switch (rc) {
1014 case 0:
1015 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1016 dev_info(&card->gdev->dev, "The HiperSockets network "
1017 "traffic analyzer is activated\n");
1018 break;
1019 case IPA_RC_HARDWARE_AUTH_ERROR:
1020 dev_warn(&card->gdev->dev, "The device is not "
1021 "authorized to run as a HiperSockets network "
1022 "traffic analyzer\n");
1023 break;
1024 case IPA_RC_TRACE_ALREADY_ACTIVE:
1025 dev_warn(&card->gdev->dev, "A HiperSockets "
1026 "network traffic analyzer is already "
1027 "active in the HiperSockets LAN\n");
1028 break;
1029 default:
1030 break;
1031 }
1032 break;
1033 default:
1034 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1035 cmd->data.diagass.action, CARD_DEVID(card));
1036 }
1037
1038 return rc ? -EIO : 0;
1039}
1040
1041static int
1042qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1043{
1044 struct qeth_cmd_buffer *iob;
1045 struct qeth_ipa_cmd *cmd;
1046
1047 QETH_CARD_TEXT(card, 2, "diagtrac");
1048
1049 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1050 if (!iob)
1051 return -ENOMEM;
1052 cmd = __ipa_cmd(iob);
1053 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1054 cmd->data.diagass.action = diags_cmd;
1055 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1056}
1057
1058static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
1059{
1060 struct qeth_card *card = arg;
1061 struct inet6_dev *in6_dev;
1062 struct in_device *in4_dev;
1063 struct qeth_ipaddr *ipm;
1064 struct qeth_ipaddr tmp;
1065 struct ip_mc_list *im4;
1066 struct ifmcaddr6 *im6;
1067
1068 QETH_CARD_TEXT(card, 4, "addmc");
1069
1070 if (!dev || !(dev->flags & IFF_UP))
1071 goto out;
1072
1073 in4_dev = __in_dev_get_rtnl(dev);
1074 if (!in4_dev)
1075 goto walk_ipv6;
1076
1077 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
1078 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1079 tmp.is_multicast = 1;
1080
1081 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
1082 im4 = rtnl_dereference(im4->next_rcu)) {
1083 tmp.u.a4.addr = im4->multiaddr;
1084
1085 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1086 if (ipm) {
1087
1088 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1089 continue;
1090 }
1091
1092 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
1093 if (!ipm)
1094 continue;
1095
1096 hash_add(card->rx_mode_addrs, &ipm->hnode,
1097 qeth_l3_ipaddr_hash(ipm));
1098 }
1099
1100walk_ipv6:
1101 if (!qeth_is_supported(card, IPA_IPV6))
1102 goto out;
1103
1104 in6_dev = __in6_dev_get(dev);
1105 if (!in6_dev)
1106 goto out;
1107
1108 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
1109 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1110 tmp.is_multicast = 1;
1111
1112 read_lock_bh(&in6_dev->lock);
1113 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1114 tmp.u.a6.addr = im6->mca_addr;
1115
1116 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1117 if (ipm) {
1118
1119 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1120 continue;
1121 }
1122
1123 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
1124 if (!ipm)
1125 continue;
1126
1127 hash_add(card->rx_mode_addrs, &ipm->hnode,
1128 qeth_l3_ipaddr_hash(ipm));
1129
1130 }
1131 read_unlock_bh(&in6_dev->lock);
1132
1133out:
1134 return 0;
1135}
1136
1137static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1138 __be16 proto, u16 vid)
1139{
1140 struct qeth_card *card = dev->ml_priv;
1141
1142 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
1143 return 0;
1144}
1145
1146static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1147 __be16 proto, u16 vid)
1148{
1149 struct qeth_card *card = dev->ml_priv;
1150
1151 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1152 return 0;
1153}
1154
1155static void qeth_l3_stop_card(struct qeth_card *card)
1156{
1157 QETH_CARD_TEXT(card, 2, "stopcard");
1158
1159 qeth_set_allowed_threads(card, 0, 1);
1160
1161 cancel_work_sync(&card->rx_mode_work);
1162 qeth_l3_drain_rx_mode_cache(card);
1163
1164 if (card->options.sniffer &&
1165 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1166 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1167
1168 if (card->state == CARD_STATE_SOFTSETUP) {
1169 qeth_l3_clear_ip_htable(card, 1);
1170 qeth_clear_ipacmd_list(card);
1171 card->state = CARD_STATE_DOWN;
1172 }
1173
1174 qeth_qdio_clear_card(card, 0);
1175 qeth_drain_output_queues(card);
1176 qeth_clear_working_pool_list(card);
1177 flush_workqueue(card->event_wq);
1178 qeth_flush_local_addrs(card);
1179 card->info.promisc_mode = 0;
1180}
1181
1182static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1183{
1184 bool enable = card->dev->flags & IFF_PROMISC;
1185
1186 if (card->info.promisc_mode == enable)
1187 return;
1188
1189 if (IS_VM_NIC(card)) {
1190 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1191 qeth_setadp_promisc_mode(card, enable);
1192 } else if (card->options.sniffer &&
1193 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1194 if (enable) {
1195 QETH_CARD_TEXT(card, 3, "+promisc");
1196 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1197 } else {
1198 QETH_CARD_TEXT(card, 3, "-promisc");
1199 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1200 }
1201 }
1202}
1203
1204static void qeth_l3_rx_mode_work(struct work_struct *work)
1205{
1206 struct qeth_card *card = container_of(work, struct qeth_card,
1207 rx_mode_work);
1208 struct qeth_ipaddr *addr;
1209 struct hlist_node *tmp;
1210 int i, rc;
1211
1212 QETH_CARD_TEXT(card, 3, "setmulti");
1213
1214 if (!card->options.sniffer) {
1215 rtnl_lock();
1216 qeth_l3_add_mcast_rtnl(card->dev, 0, card);
1217 if (qeth_is_supported(card, IPA_FULL_VLAN))
1218 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
1219 rtnl_unlock();
1220
1221 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
1222 switch (addr->disp_flag) {
1223 case QETH_DISP_ADDR_DELETE:
1224 rc = qeth_l3_deregister_addr_entry(card, addr);
1225 if (!rc || rc == -ENOENT) {
1226 hash_del(&addr->hnode);
1227 kfree(addr);
1228 }
1229 break;
1230 case QETH_DISP_ADDR_ADD:
1231 rc = qeth_l3_register_addr_entry(card, addr);
1232 if (rc && rc != -ENETDOWN) {
1233 hash_del(&addr->hnode);
1234 kfree(addr);
1235 break;
1236 }
1237 addr->ref_counter = 1;
1238 fallthrough;
1239 default:
1240
1241 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1242 }
1243 }
1244 }
1245
1246 qeth_l3_set_promisc_mode(card);
1247}
1248
1249static int qeth_l3_arp_makerc(u16 rc)
1250{
1251 switch (rc) {
1252 case IPA_RC_SUCCESS:
1253 return 0;
1254 case QETH_IPA_ARP_RC_NOTSUPP:
1255 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1256 return -EOPNOTSUPP;
1257 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1258 return -EINVAL;
1259 case QETH_IPA_ARP_RC_Q_NO_DATA:
1260 return -ENOENT;
1261 default:
1262 return -EIO;
1263 }
1264}
1265
1266static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1267 unsigned long data)
1268{
1269 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1270
1271 qeth_setassparms_cb(card, reply, data);
1272 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1273}
1274
1275static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1276{
1277 struct qeth_cmd_buffer *iob;
1278 int rc;
1279
1280 QETH_CARD_TEXT(card, 3, "arpstnoe");
1281
1282
1283
1284
1285
1286
1287 if (IS_VM_NIC(card))
1288 return -EOPNOTSUPP;
1289 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1290 return -EOPNOTSUPP;
1291 }
1292
1293 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1294 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1295 SETASS_DATA_SIZEOF(flags_32bit),
1296 QETH_PROT_IPV4);
1297 if (!iob)
1298 return -ENOMEM;
1299
1300 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1301 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1302 if (rc)
1303 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1304 CARD_DEVID(card), rc);
1305 return rc;
1306}
1307
1308static __u32 get_arp_entry_size(struct qeth_card *card,
1309 struct qeth_arp_query_data *qdata,
1310 struct qeth_arp_entrytype *type, __u8 strip_entries)
1311{
1312 __u32 rc;
1313 __u8 is_hsi;
1314
1315 is_hsi = qdata->reply_bits == 5;
1316 if (type->ip == QETHARP_IP_ADDR_V4) {
1317 QETH_CARD_TEXT(card, 4, "arpev4");
1318 if (strip_entries) {
1319 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1320 sizeof(struct qeth_arp_qi_entry7_short);
1321 } else {
1322 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1323 sizeof(struct qeth_arp_qi_entry7);
1324 }
1325 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1326 QETH_CARD_TEXT(card, 4, "arpev6");
1327 if (strip_entries) {
1328 rc = is_hsi ?
1329 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1330 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1331 } else {
1332 rc = is_hsi ?
1333 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1334 sizeof(struct qeth_arp_qi_entry7_ipv6);
1335 }
1336 } else {
1337 QETH_CARD_TEXT(card, 4, "arpinv");
1338 rc = 0;
1339 }
1340
1341 return rc;
1342}
1343
1344static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1345{
1346 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1347 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1348}
1349
1350static int qeth_l3_arp_query_cb(struct qeth_card *card,
1351 struct qeth_reply *reply, unsigned long data)
1352{
1353 struct qeth_ipa_cmd *cmd;
1354 struct qeth_arp_query_data *qdata;
1355 struct qeth_arp_query_info *qinfo;
1356 int e;
1357 int entrybytes_done;
1358 int stripped_bytes;
1359 __u8 do_strip_entries;
1360
1361 QETH_CARD_TEXT(card, 3, "arpquecb");
1362
1363 qinfo = (struct qeth_arp_query_info *) reply->param;
1364 cmd = (struct qeth_ipa_cmd *) data;
1365 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1366 if (cmd->hdr.return_code) {
1367 QETH_CARD_TEXT(card, 4, "arpcberr");
1368 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1369 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1370 }
1371 if (cmd->data.setassparms.hdr.return_code) {
1372 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1373 QETH_CARD_TEXT(card, 4, "setaperr");
1374 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1375 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1376 }
1377 qdata = &cmd->data.setassparms.data.query_arp;
1378 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1379
1380 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1381 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1382 entrybytes_done = 0;
1383 for (e = 0; e < qdata->no_entries; ++e) {
1384 char *cur_entry;
1385 __u32 esize;
1386 struct qeth_arp_entrytype *etype;
1387
1388 cur_entry = &qdata->data + entrybytes_done;
1389 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1390 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1391 QETH_CARD_TEXT(card, 4, "pmis");
1392 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1393 break;
1394 }
1395 esize = get_arp_entry_size(card, qdata, etype,
1396 do_strip_entries);
1397 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1398 if (!esize)
1399 break;
1400
1401 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1402 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1403 memset(qinfo->udata, 0, 4);
1404 return -ENOSPC;
1405 }
1406
1407 memcpy(qinfo->udata + qinfo->udata_offset,
1408 &qdata->data + entrybytes_done + stripped_bytes,
1409 esize);
1410 entrybytes_done += esize + stripped_bytes;
1411 qinfo->udata_offset += esize;
1412 ++qinfo->no_entries;
1413 }
1414
1415 if (cmd->data.setassparms.hdr.seq_no <
1416 cmd->data.setassparms.hdr.number_of_replies)
1417 return 1;
1418 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1419 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1420
1421
1422 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1423 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1424 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1425 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1426 return 0;
1427}
1428
1429static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1430 enum qeth_prot_versions prot,
1431 struct qeth_arp_query_info *qinfo)
1432{
1433 struct qeth_cmd_buffer *iob;
1434 struct qeth_ipa_cmd *cmd;
1435 int rc;
1436
1437 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1438
1439 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1440 IPA_CMD_ASS_ARP_QUERY_INFO,
1441 SETASS_DATA_SIZEOF(query_arp), prot);
1442 if (!iob)
1443 return -ENOMEM;
1444 cmd = __ipa_cmd(iob);
1445 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1446 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1447 if (rc)
1448 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1449 CARD_DEVID(card), rc);
1450 return rc;
1451}
1452
1453static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1454{
1455 struct qeth_arp_query_info qinfo = {0, };
1456 int rc;
1457
1458 QETH_CARD_TEXT(card, 3, "arpquery");
1459
1460 if (!qeth_is_supported(card,
1461 IPA_ARP_PROCESSING)) {
1462 QETH_CARD_TEXT(card, 3, "arpqnsup");
1463 rc = -EOPNOTSUPP;
1464 goto out;
1465 }
1466
1467 if (copy_from_user(&qinfo, udata, 6)) {
1468 rc = -EFAULT;
1469 goto out;
1470 }
1471 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1472 if (!qinfo.udata) {
1473 rc = -ENOMEM;
1474 goto out;
1475 }
1476 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1477 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1478 if (rc) {
1479 if (copy_to_user(udata, qinfo.udata, 4))
1480 rc = -EFAULT;
1481 goto free_and_out;
1482 }
1483 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1484
1485 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1486 }
1487 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1488 QETH_CARD_TEXT(card, 4, "qactf");
1489 rc = -EFAULT;
1490 goto free_and_out;
1491 }
1492 QETH_CARD_TEXT(card, 4, "qacts");
1493
1494free_and_out:
1495 kfree(qinfo.udata);
1496out:
1497 return rc;
1498}
1499
1500static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1501 struct qeth_arp_cache_entry *entry,
1502 enum qeth_arp_process_subcmds arp_cmd)
1503{
1504 struct qeth_arp_cache_entry *cmd_entry;
1505 struct qeth_cmd_buffer *iob;
1506 int rc;
1507
1508 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1509 QETH_CARD_TEXT(card, 3, "arpadd");
1510 else
1511 QETH_CARD_TEXT(card, 3, "arpdel");
1512
1513
1514
1515
1516
1517
1518 if (IS_VM_NIC(card))
1519 return -EOPNOTSUPP;
1520 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1521 return -EOPNOTSUPP;
1522 }
1523
1524 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1525 SETASS_DATA_SIZEOF(arp_entry),
1526 QETH_PROT_IPV4);
1527 if (!iob)
1528 return -ENOMEM;
1529
1530 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1531 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1532 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1533 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1534 if (rc)
1535 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1536 arp_cmd, CARD_DEVID(card), rc);
1537 return rc;
1538}
1539
1540static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1541{
1542 struct qeth_cmd_buffer *iob;
1543 int rc;
1544
1545 QETH_CARD_TEXT(card, 3, "arpflush");
1546
1547
1548
1549
1550
1551
1552 if (IS_VM_NIC(card) || IS_IQD(card))
1553 return -EOPNOTSUPP;
1554 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1555 return -EOPNOTSUPP;
1556 }
1557
1558 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1559 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1560 QETH_PROT_IPV4);
1561 if (!iob)
1562 return -ENOMEM;
1563
1564 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1565 if (rc)
1566 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1567 CARD_DEVID(card), rc);
1568 return rc;
1569}
1570
1571static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1572{
1573 struct qeth_card *card = dev->ml_priv;
1574 struct qeth_arp_cache_entry arp_entry;
1575 enum qeth_arp_process_subcmds arp_cmd;
1576 int rc = 0;
1577
1578 switch (cmd) {
1579 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1580 if (!capable(CAP_NET_ADMIN)) {
1581 rc = -EPERM;
1582 break;
1583 }
1584 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1585 break;
1586 case SIOC_QETH_ARP_QUERY_INFO:
1587 if (!capable(CAP_NET_ADMIN)) {
1588 rc = -EPERM;
1589 break;
1590 }
1591 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1592 break;
1593 case SIOC_QETH_ARP_ADD_ENTRY:
1594 case SIOC_QETH_ARP_REMOVE_ENTRY:
1595 if (!capable(CAP_NET_ADMIN))
1596 return -EPERM;
1597 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1598 return -EFAULT;
1599
1600 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1601 IPA_CMD_ASS_ARP_ADD_ENTRY :
1602 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1603 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1604 case SIOC_QETH_ARP_FLUSH_CACHE:
1605 if (!capable(CAP_NET_ADMIN)) {
1606 rc = -EPERM;
1607 break;
1608 }
1609 rc = qeth_l3_arp_flush_cache(card);
1610 break;
1611 default:
1612 rc = -EOPNOTSUPP;
1613 }
1614 return rc;
1615}
1616
1617static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1618 int ipv)
1619{
1620 struct neighbour *n = NULL;
1621
1622 if (dst)
1623 n = dst_neigh_lookup_skb(dst, skb);
1624
1625 if (n) {
1626 int cast_type = n->type;
1627
1628 neigh_release(n);
1629 if ((cast_type == RTN_BROADCAST) ||
1630 (cast_type == RTN_MULTICAST) ||
1631 (cast_type == RTN_ANYCAST))
1632 return cast_type;
1633 return RTN_UNICAST;
1634 }
1635
1636
1637 switch (ipv) {
1638 case 4:
1639 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1640 return RTN_BROADCAST;
1641 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1642 RTN_MULTICAST : RTN_UNICAST;
1643 case 6:
1644 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1645 RTN_MULTICAST : RTN_UNICAST;
1646 default:
1647
1648 return qeth_get_ether_cast_type(skb);
1649 }
1650}
1651
1652static int qeth_l3_get_cast_type(struct sk_buff *skb)
1653{
1654 int ipv = qeth_get_ip_version(skb);
1655 struct dst_entry *dst;
1656 int cast_type;
1657
1658 rcu_read_lock();
1659 dst = qeth_dst_check_rcu(skb, ipv);
1660 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1661 rcu_read_unlock();
1662
1663 return cast_type;
1664}
1665
1666static u8 qeth_l3_cast_type_to_flag(int cast_type)
1667{
1668 if (cast_type == RTN_MULTICAST)
1669 return QETH_CAST_MULTICAST;
1670 if (cast_type == RTN_ANYCAST)
1671 return QETH_CAST_ANYCAST;
1672 if (cast_type == RTN_BROADCAST)
1673 return QETH_CAST_BROADCAST;
1674 return QETH_CAST_UNICAST;
1675}
1676
1677static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1678 struct qeth_hdr *hdr, struct sk_buff *skb,
1679 int ipv, unsigned int data_len)
1680{
1681 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1682 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1683 struct qeth_card *card = queue->card;
1684 struct dst_entry *dst;
1685 int cast_type;
1686
1687 hdr->hdr.l3.length = data_len;
1688
1689 if (skb_is_gso(skb)) {
1690 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1691 } else {
1692 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1693
1694 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1695 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1696 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
1697 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
1698 iucv_trans_hdr(skb)->destUserID, 8);
1699 return;
1700 }
1701
1702 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1703 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1704
1705 if (ipv == 4)
1706 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1707 }
1708 }
1709
1710 if (ipv == 4 || IS_IQD(card)) {
1711
1712 if (skb_vlan_tag_present(skb)) {
1713 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1714 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1715 }
1716 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1717 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1718 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1719 }
1720
1721 rcu_read_lock();
1722 dst = qeth_dst_check_rcu(skb, ipv);
1723
1724 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1725 cast_type = RTN_UNICAST;
1726 else
1727 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1728 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1729
1730 if (ipv == 4) {
1731 l3_hdr->next_hop.addr.s6_addr32[3] =
1732 qeth_next_hop_v4_rcu(skb, dst);
1733 } else if (ipv == 6) {
1734 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
1735
1736 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1737 if (!IS_IQD(card))
1738 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1739 } else {
1740
1741 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1742 }
1743 rcu_read_unlock();
1744}
1745
1746static void qeth_l3_fixup_headers(struct sk_buff *skb)
1747{
1748 struct iphdr *iph = ip_hdr(skb);
1749
1750
1751 if (skb->ip_summed == CHECKSUM_PARTIAL)
1752 iph->check = 0;
1753 if (skb_is_gso(skb)) {
1754 iph->tot_len = 0;
1755 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1756 iph->daddr, 0);
1757 }
1758}
1759
1760static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1761 struct qeth_qdio_out_q *queue, int ipv)
1762{
1763 unsigned int hw_hdr_len;
1764 int rc;
1765
1766
1767 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1768 sizeof(struct qeth_hdr);
1769 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1770 if (rc)
1771 return rc;
1772 skb_pull(skb, ETH_HLEN);
1773
1774 qeth_l3_fixup_headers(skb);
1775 return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
1776}
1777
1778static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1779 struct net_device *dev)
1780{
1781 struct qeth_card *card = dev->ml_priv;
1782 u16 txq = skb_get_queue_mapping(skb);
1783 int ipv = qeth_get_ip_version(skb);
1784 struct qeth_qdio_out_q *queue;
1785 int rc;
1786
1787 if (!skb_is_gso(skb))
1788 qdisc_skb_cb(skb)->pkt_len = skb->len;
1789 if (IS_IQD(card)) {
1790 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1791
1792 if (card->options.sniffer)
1793 goto tx_drop;
1794 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
1795 (card->options.cq == QETH_CQ_ENABLED &&
1796 skb->protocol != htons(ETH_P_AF_IUCV)))
1797 goto tx_drop;
1798 } else {
1799 queue = card->qdio.out_qs[txq];
1800 }
1801
1802 if (!(dev->flags & IFF_BROADCAST) &&
1803 qeth_l3_get_cast_type(skb) == RTN_BROADCAST)
1804 goto tx_drop;
1805
1806 if (ipv == 4 || IS_IQD(card))
1807 rc = qeth_l3_xmit(card, skb, queue, ipv);
1808 else
1809 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
1810
1811 if (!rc)
1812 return NETDEV_TX_OK;
1813
1814tx_drop:
1815 QETH_TXQ_STAT_INC(queue, tx_dropped);
1816 kfree_skb(skb);
1817 return NETDEV_TX_OK;
1818}
1819
1820static void qeth_l3_set_rx_mode(struct net_device *dev)
1821{
1822 struct qeth_card *card = dev->ml_priv;
1823
1824 schedule_work(&card->rx_mode_work);
1825}
1826
1827
1828
1829
1830
1831
1832
1833
1834static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1835{
1836 n->nud_state = NUD_NOARP;
1837 memcpy(n->ha, "FAKELL", 6);
1838 n->output = n->ops->connected_output;
1839 return 0;
1840}
1841
1842static int
1843qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1844{
1845 if (np->tbl->family == AF_INET)
1846 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1847
1848 return 0;
1849}
1850
1851static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1852 struct net_device *dev,
1853 netdev_features_t features)
1854{
1855 if (qeth_get_ip_version(skb) != 4)
1856 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1857 return qeth_features_check(skb, dev, features);
1858}
1859
1860static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1861 struct net_device *sb_dev)
1862{
1863 return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb),
1864 sb_dev);
1865}
1866
1867static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
1868 struct net_device *sb_dev)
1869{
1870 struct qeth_card *card = dev->ml_priv;
1871
1872 return IS_VM_NIC(card) ? netdev_pick_tx(dev, skb, sb_dev) :
1873 qeth_get_priority_queue(card, skb);
1874}
1875
1876static const struct net_device_ops qeth_l3_netdev_ops = {
1877 .ndo_open = qeth_open,
1878 .ndo_stop = qeth_stop,
1879 .ndo_get_stats64 = qeth_get_stats64,
1880 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1881 .ndo_select_queue = qeth_l3_iqd_select_queue,
1882 .ndo_validate_addr = eth_validate_addr,
1883 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1884 .ndo_do_ioctl = qeth_do_ioctl,
1885 .ndo_fix_features = qeth_fix_features,
1886 .ndo_set_features = qeth_set_features,
1887 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
1888 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
1889 .ndo_tx_timeout = qeth_tx_timeout,
1890};
1891
1892static const struct net_device_ops qeth_l3_osa_netdev_ops = {
1893 .ndo_open = qeth_open,
1894 .ndo_stop = qeth_stop,
1895 .ndo_get_stats64 = qeth_get_stats64,
1896 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1897 .ndo_features_check = qeth_l3_osa_features_check,
1898 .ndo_select_queue = qeth_l3_osa_select_queue,
1899 .ndo_validate_addr = eth_validate_addr,
1900 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1901 .ndo_do_ioctl = qeth_do_ioctl,
1902 .ndo_fix_features = qeth_fix_features,
1903 .ndo_set_features = qeth_set_features,
1904 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
1905 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
1906 .ndo_tx_timeout = qeth_tx_timeout,
1907 .ndo_neigh_setup = qeth_l3_neigh_setup,
1908};
1909
1910static int qeth_l3_setup_netdev(struct qeth_card *card)
1911{
1912 struct net_device *dev = card->dev;
1913 unsigned int headroom;
1914 int rc;
1915
1916 rc = qeth_setup_netdev(card);
1917 if (rc)
1918 return rc;
1919
1920 if (IS_OSD(card) || IS_OSX(card)) {
1921 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
1922
1923
1924 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
1925
1926 if (!IS_VM_NIC(card)) {
1927 card->dev->features |= NETIF_F_SG;
1928 card->dev->hw_features |= NETIF_F_TSO |
1929 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1930 card->dev->vlan_features |= NETIF_F_TSO |
1931 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1932 }
1933
1934 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1935 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1936 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1937 }
1938 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1939 card->dev->hw_features |= NETIF_F_TSO6;
1940 card->dev->vlan_features |= NETIF_F_TSO6;
1941 }
1942
1943
1944 if (card->dev->hw_features & NETIF_F_TSO6)
1945 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
1946 else if (card->dev->hw_features & NETIF_F_TSO)
1947 headroom = sizeof(struct qeth_hdr_tso);
1948 else
1949 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
1950 } else if (IS_IQD(card)) {
1951 card->dev->flags |= IFF_NOARP;
1952 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1953 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
1954
1955 rc = qeth_l3_iqd_read_initial_mac(card);
1956 if (rc)
1957 return rc;
1958 } else
1959 return -ENODEV;
1960
1961 card->dev->needed_headroom = headroom;
1962 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1963 NETIF_F_HW_VLAN_CTAG_RX |
1964 NETIF_F_HW_VLAN_CTAG_FILTER;
1965
1966 netif_keep_dst(card->dev);
1967 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
1968 netif_set_gso_max_size(card->dev,
1969 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
1970
1971 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1972 return register_netdev(card->dev);
1973}
1974
1975static const struct device_type qeth_l3_devtype = {
1976 .name = "qeth_layer3",
1977 .groups = qeth_l3_attr_groups,
1978};
1979
1980static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
1981{
1982 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1983 int rc;
1984
1985 hash_init(card->ip_htable);
1986 mutex_init(&card->ip_lock);
1987 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
1988 dev_name(&gdev->dev));
1989 if (!card->cmd_wq)
1990 return -ENOMEM;
1991
1992 if (gdev->dev.type == &qeth_generic_devtype) {
1993 rc = qeth_l3_create_device_attributes(&gdev->dev);
1994 if (rc) {
1995 destroy_workqueue(card->cmd_wq);
1996 return rc;
1997 }
1998 }
1999
2000 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
2001 return 0;
2002}
2003
2004static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2005{
2006 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2007
2008 if (cgdev->dev.type == &qeth_generic_devtype)
2009 qeth_l3_remove_device_attributes(&cgdev->dev);
2010
2011 qeth_set_allowed_threads(card, 0, 1);
2012 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2013
2014 if (cgdev->state == CCWGROUP_ONLINE)
2015 qeth_set_offline(card, false);
2016
2017 cancel_work_sync(&card->close_dev_work);
2018 if (card->dev->reg_state == NETREG_REGISTERED)
2019 unregister_netdev(card->dev);
2020
2021 flush_workqueue(card->cmd_wq);
2022 destroy_workqueue(card->cmd_wq);
2023 qeth_l3_clear_ip_htable(card, 0);
2024 qeth_l3_clear_ipato_list(card);
2025}
2026
2027static int qeth_l3_set_online(struct qeth_card *card)
2028{
2029 struct ccwgroup_device *gdev = card->gdev;
2030 struct net_device *dev = card->dev;
2031 int rc = 0;
2032 bool carrier_ok;
2033
2034 rc = qeth_core_hardsetup_card(card, &carrier_ok);
2035 if (rc) {
2036 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2037 rc = -ENODEV;
2038 goto out_remove;
2039 }
2040
2041 qeth_print_status_message(card);
2042
2043
2044 QETH_CARD_TEXT(card, 2, "softsetp");
2045
2046 rc = qeth_l3_setadapter_parms(card);
2047 if (rc)
2048 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2049 if (!card->options.sniffer) {
2050 qeth_l3_start_ipassists(card);
2051
2052 rc = qeth_l3_setrouting_v4(card);
2053 if (rc)
2054 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
2055 rc = qeth_l3_setrouting_v6(card);
2056 if (rc)
2057 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
2058 }
2059
2060 card->state = CARD_STATE_SOFTSETUP;
2061
2062 qeth_set_allowed_threads(card, 0xffffffff, 0);
2063 qeth_l3_recover_ip(card);
2064
2065 if (dev->reg_state != NETREG_REGISTERED) {
2066 rc = qeth_l3_setup_netdev(card);
2067 if (rc)
2068 goto out_remove;
2069
2070 if (carrier_ok)
2071 netif_carrier_on(dev);
2072 } else {
2073 rtnl_lock();
2074 if (carrier_ok)
2075 netif_carrier_on(dev);
2076 else
2077 netif_carrier_off(dev);
2078
2079 netif_device_attach(dev);
2080 qeth_enable_hw_features(dev);
2081
2082 if (card->info.open_when_online) {
2083 card->info.open_when_online = 0;
2084 dev_open(dev, NULL);
2085 }
2086 rtnl_unlock();
2087 }
2088 qeth_trace_features(card);
2089
2090 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2091 return 0;
2092out_remove:
2093 qeth_l3_stop_card(card);
2094 qeth_stop_channel(&card->data);
2095 qeth_stop_channel(&card->write);
2096 qeth_stop_channel(&card->read);
2097 qdio_free(CARD_DDEV(card));
2098 return rc;
2099}
2100
2101static void qeth_l3_set_offline(struct qeth_card *card)
2102{
2103 qeth_l3_stop_card(card);
2104}
2105
2106
2107static int qeth_l3_control_event(struct qeth_card *card,
2108 struct qeth_ipa_cmd *cmd)
2109{
2110 return 1;
2111}
2112
2113struct qeth_discipline qeth_l3_discipline = {
2114 .devtype = &qeth_l3_devtype,
2115 .setup = qeth_l3_probe_device,
2116 .remove = qeth_l3_remove_device,
2117 .set_online = qeth_l3_set_online,
2118 .set_offline = qeth_l3_set_offline,
2119 .do_ioctl = qeth_l3_do_ioctl,
2120 .control_event_handler = qeth_l3_control_event,
2121};
2122EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2123
2124static int qeth_l3_handle_ip_event(struct qeth_card *card,
2125 struct qeth_ipaddr *addr,
2126 unsigned long event)
2127{
2128 switch (event) {
2129 case NETDEV_UP:
2130 qeth_l3_modify_ip(card, addr, true);
2131 return NOTIFY_OK;
2132 case NETDEV_DOWN:
2133 qeth_l3_modify_ip(card, addr, false);
2134 return NOTIFY_OK;
2135 default:
2136 return NOTIFY_DONE;
2137 }
2138}
2139
2140struct qeth_l3_ip_event_work {
2141 struct work_struct work;
2142 struct qeth_card *card;
2143 struct qeth_ipaddr addr;
2144};
2145
2146#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2147
2148static void qeth_l3_add_ip_worker(struct work_struct *work)
2149{
2150 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2151
2152 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2153 kfree(work);
2154}
2155
2156static void qeth_l3_delete_ip_worker(struct work_struct *work)
2157{
2158 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2159
2160 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2161 kfree(work);
2162}
2163
2164static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2165{
2166 if (is_vlan_dev(dev))
2167 dev = vlan_dev_real_dev(dev);
2168 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2169 dev->netdev_ops == &qeth_l3_netdev_ops)
2170 return (struct qeth_card *) dev->ml_priv;
2171 return NULL;
2172}
2173
2174static int qeth_l3_ip_event(struct notifier_block *this,
2175 unsigned long event, void *ptr)
2176{
2177
2178 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2179 struct net_device *dev = ifa->ifa_dev->dev;
2180 struct qeth_ipaddr addr;
2181 struct qeth_card *card;
2182
2183 card = qeth_l3_get_card_from_dev(dev);
2184 if (!card)
2185 return NOTIFY_DONE;
2186 QETH_CARD_TEXT(card, 3, "ipevent");
2187
2188 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2189 addr.u.a4.addr = ifa->ifa_address;
2190 addr.u.a4.mask = ifa->ifa_mask;
2191
2192 return qeth_l3_handle_ip_event(card, &addr, event);
2193}
2194
2195static struct notifier_block qeth_l3_ip_notifier = {
2196 qeth_l3_ip_event,
2197 NULL,
2198};
2199
2200static int qeth_l3_ip6_event(struct notifier_block *this,
2201 unsigned long event, void *ptr)
2202{
2203 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2204 struct net_device *dev = ifa->idev->dev;
2205 struct qeth_l3_ip_event_work *ip_work;
2206 struct qeth_card *card;
2207
2208 if (event != NETDEV_UP && event != NETDEV_DOWN)
2209 return NOTIFY_DONE;
2210
2211 card = qeth_l3_get_card_from_dev(dev);
2212 if (!card)
2213 return NOTIFY_DONE;
2214 QETH_CARD_TEXT(card, 3, "ip6event");
2215 if (!qeth_is_supported(card, IPA_IPV6))
2216 return NOTIFY_DONE;
2217
2218 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2219 if (!ip_work)
2220 return NOTIFY_DONE;
2221
2222 if (event == NETDEV_UP)
2223 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2224 else
2225 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2226
2227 ip_work->card = card;
2228 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2229 QETH_PROT_IPV6);
2230 ip_work->addr.u.a6.addr = ifa->addr;
2231 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2232
2233 queue_work(card->cmd_wq, &ip_work->work);
2234 return NOTIFY_OK;
2235}
2236
2237static struct notifier_block qeth_l3_ip6_notifier = {
2238 qeth_l3_ip6_event,
2239 NULL,
2240};
2241
2242static int qeth_l3_register_notifiers(void)
2243{
2244 int rc;
2245
2246 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2247 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2248 if (rc)
2249 return rc;
2250 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2251 if (rc) {
2252 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2253 return rc;
2254 }
2255 return 0;
2256}
2257
2258static void qeth_l3_unregister_notifiers(void)
2259{
2260 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2261 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2262 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2263}
2264
2265static int __init qeth_l3_init(void)
2266{
2267 pr_info("register layer 3 discipline\n");
2268 return qeth_l3_register_notifiers();
2269}
2270
2271static void __exit qeth_l3_exit(void)
2272{
2273 qeth_l3_unregister_notifiers();
2274 pr_info("unregister layer 3 discipline\n");
2275}
2276
2277module_init(qeth_l3_init);
2278module_exit(qeth_l3_exit);
2279MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2280MODULE_DESCRIPTION("qeth layer 3 discipline");
2281MODULE_LICENSE("GPL");
2282
