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8
9#define KMSG_COMPONENT "qeth"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/bitops.h>
15#include <linux/string.h>
16#include <linux/errno.h>
17#include <linux/kernel.h>
18#include <linux/etherdevice.h>
19#include <linux/ip.h>
20#include <linux/ipv6.h>
21#include <linux/inetdevice.h>
22#include <linux/igmp.h>
23#include <linux/slab.h>
24#include <linux/if_vlan.h>
25
26#include <net/ip.h>
27#include <net/arp.h>
28#include <net/route.h>
29#include <net/ip6_fib.h>
30#include <net/ip6_checksum.h>
31#include <net/iucv/af_iucv.h>
32#include <linux/hashtable.h>
33
34#include "qeth_l3.h"
35
36
37static int qeth_l3_set_offline(struct ccwgroup_device *);
38static int qeth_l3_stop(struct net_device *);
39static void qeth_l3_set_multicast_list(struct net_device *);
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
45static int qeth_l3_isxdigit(char *buf)
46{
47 while (*buf) {
48 if (!isxdigit(*buf++))
49 return 0;
50 }
51 return 1;
52}
53
54static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
55{
56 sprintf(buf, "%pI4", addr);
57}
58
59static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
60{
61 int count = 0, rc = 0;
62 unsigned int in[4];
63 char c;
64
65 rc = sscanf(buf, "%u.%u.%u.%u%c",
66 &in[0], &in[1], &in[2], &in[3], &c);
67 if (rc != 4 && (rc != 5 || c != '\n'))
68 return -EINVAL;
69 for (count = 0; count < 4; count++) {
70 if (in[count] > 255)
71 return -EINVAL;
72 addr[count] = in[count];
73 }
74 return 0;
75}
76
77static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
78{
79 sprintf(buf, "%pI6", addr);
80}
81
82static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
83{
84 const char *end, *end_tmp, *start;
85 __u16 *in;
86 char num[5];
87 int num2, cnt, out, found, save_cnt;
88 unsigned short in_tmp[8] = {0, };
89
90 cnt = out = found = save_cnt = num2 = 0;
91 end = start = buf;
92 in = (__u16 *) addr;
93 memset(in, 0, 16);
94 while (*end) {
95 end = strchr(start, ':');
96 if (end == NULL) {
97 end = buf + strlen(buf);
98 end_tmp = strchr(start, '\n');
99 if (end_tmp != NULL)
100 end = end_tmp;
101 out = 1;
102 }
103 if ((end - start)) {
104 memset(num, 0, 5);
105 if ((end - start) > 4)
106 return -EINVAL;
107 memcpy(num, start, end - start);
108 if (!qeth_l3_isxdigit(num))
109 return -EINVAL;
110 sscanf(start, "%x", &num2);
111 if (found)
112 in_tmp[save_cnt++] = num2;
113 else
114 in[cnt++] = num2;
115 if (out)
116 break;
117 } else {
118 if (found)
119 return -EINVAL;
120 found = 1;
121 }
122 start = ++end;
123 }
124 if (cnt + save_cnt > 8)
125 return -EINVAL;
126 cnt = 7;
127 while (save_cnt)
128 in[cnt--] = in_tmp[--save_cnt];
129 return 0;
130}
131
132void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
133 char *buf)
134{
135 if (proto == QETH_PROT_IPV4)
136 qeth_l3_ipaddr4_to_string(addr, buf);
137 else if (proto == QETH_PROT_IPV6)
138 qeth_l3_ipaddr6_to_string(addr, buf);
139}
140
141int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
142 __u8 *addr)
143{
144 if (proto == QETH_PROT_IPV4)
145 return qeth_l3_string_to_ipaddr4(buf, addr);
146 else if (proto == QETH_PROT_IPV6)
147 return qeth_l3_string_to_ipaddr6(buf, addr);
148 else
149 return -EINVAL;
150}
151
152static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
153{
154 int i, j;
155 u8 octet;
156
157 for (i = 0; i < len; ++i) {
158 octet = addr[i];
159 for (j = 7; j >= 0; --j) {
160 bits[i*8 + j] = octet & 1;
161 octet >>= 1;
162 }
163 }
164}
165
166int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
167 struct qeth_ipaddr *addr)
168{
169 struct qeth_ipato_entry *ipatoe;
170 u8 addr_bits[128] = {0, };
171 u8 ipatoe_bits[128] = {0, };
172 int rc = 0;
173
174 if (!card->ipato.enabled)
175 return 0;
176
177 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
178 (addr->proto == QETH_PROT_IPV4)? 4:16);
179 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
180 if (addr->proto != ipatoe->proto)
181 continue;
182 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
183 (ipatoe->proto == QETH_PROT_IPV4) ?
184 4 : 16);
185 if (addr->proto == QETH_PROT_IPV4)
186 rc = !memcmp(addr_bits, ipatoe_bits,
187 min(32, ipatoe->mask_bits));
188 else
189 rc = !memcmp(addr_bits, ipatoe_bits,
190 min(128, ipatoe->mask_bits));
191 if (rc)
192 break;
193 }
194
195 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
196 rc = !rc;
197 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
198 rc = !rc;
199
200 return rc;
201}
202
203inline int
204qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
205{
206 return addr1->proto == addr2->proto &&
207 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u)) &&
208 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
209}
210
211static struct qeth_ipaddr *
212qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
213{
214 struct qeth_ipaddr *addr;
215
216 if (tmp_addr->is_multicast) {
217 hash_for_each_possible(card->ip_mc_htable, addr,
218 hnode, qeth_l3_ipaddr_hash(tmp_addr))
219 if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
220 return addr;
221 } else {
222 hash_for_each_possible(card->ip_htable, addr,
223 hnode, qeth_l3_ipaddr_hash(tmp_addr))
224 if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
225 return addr;
226 }
227
228 return NULL;
229}
230
231int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
232{
233 int rc = 0;
234 struct qeth_ipaddr *addr;
235
236 QETH_CARD_TEXT(card, 4, "delip");
237
238 if (tmp_addr->proto == QETH_PROT_IPV4)
239 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
240 else {
241 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
242 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
243 }
244
245 addr = qeth_l3_ip_from_hash(card, tmp_addr);
246 if (!addr)
247 return -ENOENT;
248
249 addr->ref_counter--;
250 if (addr->ref_counter > 0 && (addr->type == QETH_IP_TYPE_NORMAL ||
251 addr->type == QETH_IP_TYPE_RXIP))
252 return rc;
253 if (addr->in_progress)
254 return -EINPROGRESS;
255
256 if (!qeth_card_hw_is_reachable(card)) {
257 addr->disp_flag = QETH_DISP_ADDR_DELETE;
258 return 0;
259 }
260
261 rc = qeth_l3_deregister_addr_entry(card, addr);
262
263 hash_del(&addr->hnode);
264 kfree(addr);
265
266 return rc;
267}
268
269int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
270{
271 int rc = 0;
272 struct qeth_ipaddr *addr;
273
274 QETH_CARD_TEXT(card, 4, "addip");
275
276 if (tmp_addr->proto == QETH_PROT_IPV4)
277 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
278 else {
279 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
280 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
281 }
282
283 addr = qeth_l3_ip_from_hash(card, tmp_addr);
284 if (!addr) {
285 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
286 if (!addr)
287 return -ENOMEM;
288
289 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
290 addr->ref_counter = 1;
291
292 if (addr->type == QETH_IP_TYPE_NORMAL &&
293 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
294 QETH_CARD_TEXT(card, 2, "tkovaddr");
295 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
296 }
297 hash_add(card->ip_htable, &addr->hnode,
298 qeth_l3_ipaddr_hash(addr));
299
300 if (!qeth_card_hw_is_reachable(card)) {
301 addr->disp_flag = QETH_DISP_ADDR_ADD;
302 return 0;
303 }
304
305
306
307
308
309
310
311
312 if (addr->proto == QETH_PROT_IPV4) {
313 addr->in_progress = 1;
314 spin_unlock_bh(&card->ip_lock);
315 rc = qeth_l3_register_addr_entry(card, addr);
316 spin_lock_bh(&card->ip_lock);
317 addr->in_progress = 0;
318 } else
319 rc = qeth_l3_register_addr_entry(card, addr);
320
321 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
322 (rc == IPA_RC_LAN_OFFLINE)) {
323 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
324 if (addr->ref_counter < 1) {
325 qeth_l3_delete_ip(card, addr);
326 kfree(addr);
327 }
328 } else {
329 hash_del(&addr->hnode);
330 kfree(addr);
331 }
332 } else {
333 if (addr->type == QETH_IP_TYPE_NORMAL ||
334 addr->type == QETH_IP_TYPE_RXIP)
335 addr->ref_counter++;
336 }
337
338 return rc;
339}
340
341
342struct qeth_ipaddr *qeth_l3_get_addr_buffer(
343 enum qeth_prot_versions prot)
344{
345 struct qeth_ipaddr *addr;
346
347 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
348 if (!addr)
349 return NULL;
350
351 addr->type = QETH_IP_TYPE_NORMAL;
352 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
353 addr->proto = prot;
354
355 return addr;
356}
357
358static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
359{
360 struct qeth_ipaddr *addr;
361 struct hlist_node *tmp;
362 int i;
363
364 QETH_CARD_TEXT(card, 4, "clearip");
365
366 if (recover && card->options.sniffer)
367 return;
368
369 spin_lock_bh(&card->ip_lock);
370
371 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
372 if (!recover) {
373 hash_del(&addr->hnode);
374 kfree(addr);
375 continue;
376 }
377 addr->disp_flag = QETH_DISP_ADDR_ADD;
378 }
379
380 spin_unlock_bh(&card->ip_lock);
381
382 spin_lock_bh(&card->mclock);
383
384 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
385 hash_del(&addr->hnode);
386 kfree(addr);
387 }
388
389 spin_unlock_bh(&card->mclock);
390
391
392}
393static void qeth_l3_recover_ip(struct qeth_card *card)
394{
395 struct qeth_ipaddr *addr;
396 struct hlist_node *tmp;
397 int i;
398 int rc;
399
400 QETH_CARD_TEXT(card, 4, "recovrip");
401
402 spin_lock_bh(&card->ip_lock);
403
404 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
405 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
406 qeth_l3_deregister_addr_entry(card, addr);
407 hash_del(&addr->hnode);
408 kfree(addr);
409 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
410 if (addr->proto == QETH_PROT_IPV4) {
411 addr->in_progress = 1;
412 spin_unlock_bh(&card->ip_lock);
413 rc = qeth_l3_register_addr_entry(card, addr);
414 spin_lock_bh(&card->ip_lock);
415 addr->in_progress = 0;
416 } else
417 rc = qeth_l3_register_addr_entry(card, addr);
418
419 if (!rc) {
420 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
421 if (addr->ref_counter < 1)
422 qeth_l3_delete_ip(card, addr);
423 } else {
424 hash_del(&addr->hnode);
425 kfree(addr);
426 }
427 }
428 }
429
430 spin_unlock_bh(&card->ip_lock);
431
432}
433
434static int qeth_l3_send_setdelmc(struct qeth_card *card,
435 struct qeth_ipaddr *addr, int ipacmd)
436{
437 int rc;
438 struct qeth_cmd_buffer *iob;
439 struct qeth_ipa_cmd *cmd;
440
441 QETH_CARD_TEXT(card, 4, "setdelmc");
442
443 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
444 if (!iob)
445 return -ENOMEM;
446 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
447 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
448 if (addr->proto == QETH_PROT_IPV6)
449 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
450 sizeof(struct in6_addr));
451 else
452 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
453
454 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
455
456 return rc;
457}
458
459static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
460{
461 int i, j;
462 for (i = 0; i < 16; i++) {
463 j = (len) - (i * 8);
464 if (j >= 8)
465 netmask[i] = 0xff;
466 else if (j > 0)
467 netmask[i] = (u8)(0xFF00 >> j);
468 else
469 netmask[i] = 0;
470 }
471}
472
473static int qeth_l3_send_setdelip(struct qeth_card *card,
474 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
475{
476 int rc;
477 struct qeth_cmd_buffer *iob;
478 struct qeth_ipa_cmd *cmd;
479 __u8 netmask[16];
480
481 QETH_CARD_TEXT(card, 4, "setdelip");
482 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
483
484 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
485 if (!iob)
486 return -ENOMEM;
487 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
488 if (addr->proto == QETH_PROT_IPV6) {
489 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
490 sizeof(struct in6_addr));
491 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
492 memcpy(cmd->data.setdelip6.mask, netmask,
493 sizeof(struct in6_addr));
494 cmd->data.setdelip6.flags = flags;
495 } else {
496 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
497 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
498 cmd->data.setdelip4.flags = flags;
499 }
500
501 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
502
503 return rc;
504}
505
506static int qeth_l3_send_setrouting(struct qeth_card *card,
507 enum qeth_routing_types type, enum qeth_prot_versions prot)
508{
509 int rc;
510 struct qeth_ipa_cmd *cmd;
511 struct qeth_cmd_buffer *iob;
512
513 QETH_CARD_TEXT(card, 4, "setroutg");
514 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
515 if (!iob)
516 return -ENOMEM;
517 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
518 cmd->data.setrtg.type = (type);
519 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
520
521 return rc;
522}
523
524static int qeth_l3_correct_routing_type(struct qeth_card *card,
525 enum qeth_routing_types *type, enum qeth_prot_versions prot)
526{
527 if (card->info.type == QETH_CARD_TYPE_IQD) {
528 switch (*type) {
529 case NO_ROUTER:
530 case PRIMARY_CONNECTOR:
531 case SECONDARY_CONNECTOR:
532 case MULTICAST_ROUTER:
533 return 0;
534 default:
535 goto out_inval;
536 }
537 } else {
538 switch (*type) {
539 case NO_ROUTER:
540 case PRIMARY_ROUTER:
541 case SECONDARY_ROUTER:
542 return 0;
543 case MULTICAST_ROUTER:
544 if (qeth_is_ipafunc_supported(card, prot,
545 IPA_OSA_MC_ROUTER))
546 return 0;
547 default:
548 goto out_inval;
549 }
550 }
551out_inval:
552 *type = NO_ROUTER;
553 return -EINVAL;
554}
555
556int qeth_l3_setrouting_v4(struct qeth_card *card)
557{
558 int rc;
559
560 QETH_CARD_TEXT(card, 3, "setrtg4");
561
562 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
563 QETH_PROT_IPV4);
564 if (rc)
565 return rc;
566
567 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
568 QETH_PROT_IPV4);
569 if (rc) {
570 card->options.route4.type = NO_ROUTER;
571 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
572 " on %s. Type set to 'no router'.\n", rc,
573 QETH_CARD_IFNAME(card));
574 }
575 return rc;
576}
577
578int qeth_l3_setrouting_v6(struct qeth_card *card)
579{
580 int rc = 0;
581
582 QETH_CARD_TEXT(card, 3, "setrtg6");
583#ifdef CONFIG_QETH_IPV6
584
585 if (!qeth_is_supported(card, IPA_IPV6))
586 return 0;
587 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
588 QETH_PROT_IPV6);
589 if (rc)
590 return rc;
591
592 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
593 QETH_PROT_IPV6);
594 if (rc) {
595 card->options.route6.type = NO_ROUTER;
596 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
597 " on %s. Type set to 'no router'.\n", rc,
598 QETH_CARD_IFNAME(card));
599 }
600#endif
601 return rc;
602}
603
604
605
606
607static void qeth_l3_clear_ipato_list(struct qeth_card *card)
608{
609 struct qeth_ipato_entry *ipatoe, *tmp;
610
611 spin_lock_bh(&card->ip_lock);
612
613 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
614 list_del(&ipatoe->entry);
615 kfree(ipatoe);
616 }
617
618 spin_unlock_bh(&card->ip_lock);
619}
620
621int qeth_l3_add_ipato_entry(struct qeth_card *card,
622 struct qeth_ipato_entry *new)
623{
624 struct qeth_ipato_entry *ipatoe;
625 int rc = 0;
626
627 QETH_CARD_TEXT(card, 2, "addipato");
628
629 spin_lock_bh(&card->ip_lock);
630
631 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
632 if (ipatoe->proto != new->proto)
633 continue;
634 if (!memcmp(ipatoe->addr, new->addr,
635 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
636 (ipatoe->mask_bits == new->mask_bits)) {
637 rc = -EEXIST;
638 break;
639 }
640 }
641
642 if (!rc)
643 list_add_tail(&new->entry, &card->ipato.entries);
644
645 spin_unlock_bh(&card->ip_lock);
646
647 return rc;
648}
649
650void qeth_l3_del_ipato_entry(struct qeth_card *card,
651 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
652{
653 struct qeth_ipato_entry *ipatoe, *tmp;
654
655 QETH_CARD_TEXT(card, 2, "delipato");
656
657 spin_lock_bh(&card->ip_lock);
658
659 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
660 if (ipatoe->proto != proto)
661 continue;
662 if (!memcmp(ipatoe->addr, addr,
663 (proto == QETH_PROT_IPV4)? 4:16) &&
664 (ipatoe->mask_bits == mask_bits)) {
665 list_del(&ipatoe->entry);
666 kfree(ipatoe);
667 }
668 }
669
670 spin_unlock_bh(&card->ip_lock);
671}
672
673
674
675
676int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
677 const u8 *addr)
678{
679 struct qeth_ipaddr *ipaddr;
680 int rc = 0;
681
682 ipaddr = qeth_l3_get_addr_buffer(proto);
683 if (ipaddr) {
684 if (proto == QETH_PROT_IPV4) {
685 QETH_CARD_TEXT(card, 2, "addvipa4");
686 memcpy(&ipaddr->u.a4.addr, addr, 4);
687 ipaddr->u.a4.mask = 0;
688 } else if (proto == QETH_PROT_IPV6) {
689 QETH_CARD_TEXT(card, 2, "addvipa6");
690 memcpy(&ipaddr->u.a6.addr, addr, 16);
691 ipaddr->u.a6.pfxlen = 0;
692 }
693 ipaddr->type = QETH_IP_TYPE_VIPA;
694 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
695 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
696 } else
697 return -ENOMEM;
698
699 spin_lock_bh(&card->ip_lock);
700
701 if (qeth_l3_ip_from_hash(card, ipaddr))
702 rc = -EEXIST;
703 else
704 qeth_l3_add_ip(card, ipaddr);
705
706 spin_unlock_bh(&card->ip_lock);
707
708 kfree(ipaddr);
709
710 return rc;
711}
712
713void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
714 const u8 *addr)
715{
716 struct qeth_ipaddr *ipaddr;
717
718 ipaddr = qeth_l3_get_addr_buffer(proto);
719 if (ipaddr) {
720 if (proto == QETH_PROT_IPV4) {
721 QETH_CARD_TEXT(card, 2, "delvipa4");
722 memcpy(&ipaddr->u.a4.addr, addr, 4);
723 ipaddr->u.a4.mask = 0;
724 } else if (proto == QETH_PROT_IPV6) {
725 QETH_CARD_TEXT(card, 2, "delvipa6");
726 memcpy(&ipaddr->u.a6.addr, addr, 16);
727 ipaddr->u.a6.pfxlen = 0;
728 }
729 ipaddr->type = QETH_IP_TYPE_VIPA;
730 } else
731 return;
732
733 spin_lock_bh(&card->ip_lock);
734 qeth_l3_delete_ip(card, ipaddr);
735 spin_unlock_bh(&card->ip_lock);
736
737 kfree(ipaddr);
738}
739
740
741
742
743int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
744 const u8 *addr)
745{
746 struct qeth_ipaddr *ipaddr;
747 int rc = 0;
748
749 ipaddr = qeth_l3_get_addr_buffer(proto);
750 if (ipaddr) {
751 if (proto == QETH_PROT_IPV4) {
752 QETH_CARD_TEXT(card, 2, "addrxip4");
753 memcpy(&ipaddr->u.a4.addr, addr, 4);
754 ipaddr->u.a4.mask = 0;
755 } else if (proto == QETH_PROT_IPV6) {
756 QETH_CARD_TEXT(card, 2, "addrxip6");
757 memcpy(&ipaddr->u.a6.addr, addr, 16);
758 ipaddr->u.a6.pfxlen = 0;
759 }
760
761 ipaddr->type = QETH_IP_TYPE_RXIP;
762 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
763 ipaddr->del_flags = 0;
764 } else
765 return -ENOMEM;
766
767 spin_lock_bh(&card->ip_lock);
768
769 if (qeth_l3_ip_from_hash(card, ipaddr))
770 rc = -EEXIST;
771 else
772 qeth_l3_add_ip(card, ipaddr);
773
774 spin_unlock_bh(&card->ip_lock);
775
776 kfree(ipaddr);
777
778 return rc;
779}
780
781void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
782 const u8 *addr)
783{
784 struct qeth_ipaddr *ipaddr;
785
786 ipaddr = qeth_l3_get_addr_buffer(proto);
787 if (ipaddr) {
788 if (proto == QETH_PROT_IPV4) {
789 QETH_CARD_TEXT(card, 2, "delrxip4");
790 memcpy(&ipaddr->u.a4.addr, addr, 4);
791 ipaddr->u.a4.mask = 0;
792 } else if (proto == QETH_PROT_IPV6) {
793 QETH_CARD_TEXT(card, 2, "delrxip6");
794 memcpy(&ipaddr->u.a6.addr, addr, 16);
795 ipaddr->u.a6.pfxlen = 0;
796 }
797 ipaddr->type = QETH_IP_TYPE_RXIP;
798 } else
799 return;
800
801 spin_lock_bh(&card->ip_lock);
802 qeth_l3_delete_ip(card, ipaddr);
803 spin_unlock_bh(&card->ip_lock);
804
805 kfree(ipaddr);
806}
807
808static int qeth_l3_register_addr_entry(struct qeth_card *card,
809 struct qeth_ipaddr *addr)
810{
811 char buf[50];
812 int rc = 0;
813 int cnt = 3;
814
815
816 if (addr->proto == QETH_PROT_IPV4) {
817 QETH_CARD_TEXT(card, 2, "setaddr4");
818 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
819 } else if (addr->proto == QETH_PROT_IPV6) {
820 QETH_CARD_TEXT(card, 2, "setaddr6");
821 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
822 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
823 } else {
824 QETH_CARD_TEXT(card, 2, "setaddr?");
825 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
826 }
827 do {
828 if (addr->is_multicast)
829 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
830 else
831 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
832 addr->set_flags);
833 if (rc)
834 QETH_CARD_TEXT(card, 2, "failed");
835 } while ((--cnt > 0) && rc);
836 if (rc) {
837 QETH_CARD_TEXT(card, 2, "FAILED");
838 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
839 dev_warn(&card->gdev->dev,
840 "Registering IP address %s failed\n", buf);
841 }
842 return rc;
843}
844
845static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
846 struct qeth_ipaddr *addr)
847{
848 int rc = 0;
849
850 if (addr->proto == QETH_PROT_IPV4) {
851 QETH_CARD_TEXT(card, 2, "deladdr4");
852 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
853 } else if (addr->proto == QETH_PROT_IPV6) {
854 QETH_CARD_TEXT(card, 2, "deladdr6");
855 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
856 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
857 } else {
858 QETH_CARD_TEXT(card, 2, "deladdr?");
859 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
860 }
861 if (addr->is_multicast)
862 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
863 else
864 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
865 addr->del_flags);
866 if (rc)
867 QETH_CARD_TEXT(card, 2, "failed");
868
869 return rc;
870}
871
872static u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
873{
874 if (cast_type == RTN_MULTICAST)
875 return QETH_CAST_MULTICAST;
876 if (cast_type == RTN_BROADCAST)
877 return QETH_CAST_BROADCAST;
878 return QETH_CAST_UNICAST;
879}
880
881static u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
882{
883 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
884 if (cast_type == RTN_MULTICAST)
885 return ct | QETH_CAST_MULTICAST;
886 if (cast_type == RTN_ANYCAST)
887 return ct | QETH_CAST_ANYCAST;
888 if (cast_type == RTN_BROADCAST)
889 return ct | QETH_CAST_BROADCAST;
890 return ct | QETH_CAST_UNICAST;
891}
892
893static int qeth_l3_setadapter_parms(struct qeth_card *card)
894{
895 int rc = 0;
896
897 QETH_DBF_TEXT(SETUP, 2, "setadprm");
898
899 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
900 rc = qeth_setadpparms_change_macaddr(card);
901 if (rc)
902 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
903 " address failed\n");
904 }
905
906 return rc;
907}
908
909#ifdef CONFIG_QETH_IPV6
910static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
911 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
912{
913 int rc;
914 struct qeth_cmd_buffer *iob;
915
916 QETH_CARD_TEXT(card, 4, "simassp6");
917 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
918 0, QETH_PROT_IPV6);
919 if (!iob)
920 return -ENOMEM;
921 rc = qeth_send_setassparms(card, iob, 0, 0,
922 qeth_setassparms_cb, NULL);
923 return rc;
924}
925#endif
926
927static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
928{
929 int rc;
930
931 QETH_CARD_TEXT(card, 3, "ipaarp");
932
933 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
934 dev_info(&card->gdev->dev,
935 "ARP processing not supported on %s!\n",
936 QETH_CARD_IFNAME(card));
937 return 0;
938 }
939 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
940 IPA_CMD_ASS_START, 0);
941 if (rc) {
942 dev_warn(&card->gdev->dev,
943 "Starting ARP processing support for %s failed\n",
944 QETH_CARD_IFNAME(card));
945 }
946 return rc;
947}
948
949static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
950{
951 int rc;
952
953 QETH_CARD_TEXT(card, 3, "stsrcmac");
954
955 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
956 dev_info(&card->gdev->dev,
957 "Inbound source MAC-address not supported on %s\n",
958 QETH_CARD_IFNAME(card));
959 return -EOPNOTSUPP;
960 }
961
962 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
963 IPA_CMD_ASS_START, 0);
964 if (rc)
965 dev_warn(&card->gdev->dev,
966 "Starting source MAC-address support for %s failed\n",
967 QETH_CARD_IFNAME(card));
968 return rc;
969}
970
971static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
972{
973 int rc = 0;
974
975 QETH_CARD_TEXT(card, 3, "strtvlan");
976
977 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
978 dev_info(&card->gdev->dev,
979 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
980 return -EOPNOTSUPP;
981 }
982
983 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
984 IPA_CMD_ASS_START, 0);
985 if (rc) {
986 dev_warn(&card->gdev->dev,
987 "Starting VLAN support for %s failed\n",
988 QETH_CARD_IFNAME(card));
989 } else {
990 dev_info(&card->gdev->dev, "VLAN enabled\n");
991 }
992 return rc;
993}
994
995static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
996{
997 int rc;
998
999 QETH_CARD_TEXT(card, 3, "stmcast");
1000
1001 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1002 dev_info(&card->gdev->dev,
1003 "Multicast not supported on %s\n",
1004 QETH_CARD_IFNAME(card));
1005 return -EOPNOTSUPP;
1006 }
1007
1008 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1009 IPA_CMD_ASS_START, 0);
1010 if (rc) {
1011 dev_warn(&card->gdev->dev,
1012 "Starting multicast support for %s failed\n",
1013 QETH_CARD_IFNAME(card));
1014 } else {
1015 dev_info(&card->gdev->dev, "Multicast enabled\n");
1016 card->dev->flags |= IFF_MULTICAST;
1017 }
1018 return rc;
1019}
1020
1021#ifdef CONFIG_QETH_IPV6
1022static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1023{
1024 int rc;
1025
1026 QETH_CARD_TEXT(card, 3, "softipv6");
1027
1028 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1029 if (rc) {
1030 dev_err(&card->gdev->dev,
1031 "Activating IPv6 support for %s failed\n",
1032 QETH_CARD_IFNAME(card));
1033 return rc;
1034 }
1035
1036 if (card->info.type == QETH_CARD_TYPE_IQD)
1037 goto out;
1038
1039 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1040 IPA_CMD_ASS_START, 3);
1041 if (rc) {
1042 dev_err(&card->gdev->dev,
1043 "Activating IPv6 support for %s failed\n",
1044 QETH_CARD_IFNAME(card));
1045 return rc;
1046 }
1047 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1048 IPA_CMD_ASS_START);
1049 if (rc) {
1050 dev_err(&card->gdev->dev,
1051 "Activating IPv6 support for %s failed\n",
1052 QETH_CARD_IFNAME(card));
1053 return rc;
1054 }
1055 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1056 IPA_CMD_ASS_START);
1057 if (rc) {
1058 dev_warn(&card->gdev->dev,
1059 "Enabling the passthrough mode for %s failed\n",
1060 QETH_CARD_IFNAME(card));
1061 return rc;
1062 }
1063out:
1064 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1065 return 0;
1066}
1067#endif
1068
1069static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1070{
1071 int rc = 0;
1072
1073 QETH_CARD_TEXT(card, 3, "strtipv6");
1074
1075 if (!qeth_is_supported(card, IPA_IPV6)) {
1076 dev_info(&card->gdev->dev,
1077 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1078 return 0;
1079 }
1080#ifdef CONFIG_QETH_IPV6
1081 rc = qeth_l3_softsetup_ipv6(card);
1082#endif
1083 return rc ;
1084}
1085
1086static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1087{
1088 int rc;
1089
1090 QETH_CARD_TEXT(card, 3, "stbrdcst");
1091 card->info.broadcast_capable = 0;
1092 if (!qeth_is_supported(card, IPA_FILTERING)) {
1093 dev_info(&card->gdev->dev,
1094 "Broadcast not supported on %s\n",
1095 QETH_CARD_IFNAME(card));
1096 rc = -EOPNOTSUPP;
1097 goto out;
1098 }
1099 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1100 IPA_CMD_ASS_START, 0);
1101 if (rc) {
1102 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1103 "%s failed\n", QETH_CARD_IFNAME(card));
1104 goto out;
1105 }
1106
1107 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1108 IPA_CMD_ASS_CONFIGURE, 1);
1109 if (rc) {
1110 dev_warn(&card->gdev->dev,
1111 "Setting up broadcast filtering for %s failed\n",
1112 QETH_CARD_IFNAME(card));
1113 goto out;
1114 }
1115 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1116 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1117 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1118 IPA_CMD_ASS_ENABLE, 1);
1119 if (rc) {
1120 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1121 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1122 goto out;
1123 }
1124 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1125out:
1126 if (card->info.broadcast_capable)
1127 card->dev->flags |= IFF_BROADCAST;
1128 else
1129 card->dev->flags &= ~IFF_BROADCAST;
1130 return rc;
1131}
1132
1133static int qeth_l3_start_ipassists(struct qeth_card *card)
1134{
1135 QETH_CARD_TEXT(card, 3, "strtipas");
1136
1137 if (qeth_set_access_ctrl_online(card, 0))
1138 return -EIO;
1139 qeth_l3_start_ipa_arp_processing(card);
1140 qeth_l3_start_ipa_source_mac(card);
1141 qeth_l3_start_ipa_vlan(card);
1142 qeth_l3_start_ipa_multicast(card);
1143 qeth_l3_start_ipa_ipv6(card);
1144 qeth_l3_start_ipa_broadcast(card);
1145 return 0;
1146}
1147
1148static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1149 struct qeth_reply *reply, unsigned long data)
1150{
1151 struct qeth_ipa_cmd *cmd;
1152
1153 cmd = (struct qeth_ipa_cmd *) data;
1154 if (cmd->hdr.return_code == 0)
1155 memcpy(card->dev->dev_addr,
1156 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1157 else
1158 eth_random_addr(card->dev->dev_addr);
1159
1160 return 0;
1161}
1162
1163static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1164{
1165 int rc = 0;
1166 struct qeth_cmd_buffer *iob;
1167 struct qeth_ipa_cmd *cmd;
1168
1169 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1170
1171 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1172 QETH_PROT_IPV6);
1173 if (!iob)
1174 return -ENOMEM;
1175 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1176 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1177 card->info.unique_id;
1178
1179 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1180 NULL);
1181 return rc;
1182}
1183
1184static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1185 struct qeth_reply *reply, unsigned long data)
1186{
1187 struct qeth_ipa_cmd *cmd;
1188
1189 cmd = (struct qeth_ipa_cmd *) data;
1190 if (cmd->hdr.return_code == 0)
1191 card->info.unique_id = *((__u16 *)
1192 &cmd->data.create_destroy_addr.unique_id[6]);
1193 else {
1194 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1195 UNIQUE_ID_NOT_BY_CARD;
1196 dev_warn(&card->gdev->dev, "The network adapter failed to "
1197 "generate a unique ID\n");
1198 }
1199 return 0;
1200}
1201
1202static int qeth_l3_get_unique_id(struct qeth_card *card)
1203{
1204 int rc = 0;
1205 struct qeth_cmd_buffer *iob;
1206 struct qeth_ipa_cmd *cmd;
1207
1208 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1209
1210 if (!qeth_is_supported(card, IPA_IPV6)) {
1211 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1212 UNIQUE_ID_NOT_BY_CARD;
1213 return 0;
1214 }
1215
1216 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1217 QETH_PROT_IPV6);
1218 if (!iob)
1219 return -ENOMEM;
1220 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1221 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1222 card->info.unique_id;
1223
1224 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1225 return rc;
1226}
1227
1228static int
1229qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1230 unsigned long data)
1231{
1232 struct qeth_ipa_cmd *cmd;
1233 __u16 rc;
1234
1235 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1236
1237 cmd = (struct qeth_ipa_cmd *)data;
1238 rc = cmd->hdr.return_code;
1239 if (rc)
1240 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1241 switch (cmd->data.diagass.action) {
1242 case QETH_DIAGS_CMD_TRACE_QUERY:
1243 break;
1244 case QETH_DIAGS_CMD_TRACE_DISABLE:
1245 switch (rc) {
1246 case 0:
1247 case IPA_RC_INVALID_SUBCMD:
1248 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1249 dev_info(&card->gdev->dev, "The HiperSockets network "
1250 "traffic analyzer is deactivated\n");
1251 break;
1252 default:
1253 break;
1254 }
1255 break;
1256 case QETH_DIAGS_CMD_TRACE_ENABLE:
1257 switch (rc) {
1258 case 0:
1259 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1260 dev_info(&card->gdev->dev, "The HiperSockets network "
1261 "traffic analyzer is activated\n");
1262 break;
1263 case IPA_RC_HARDWARE_AUTH_ERROR:
1264 dev_warn(&card->gdev->dev, "The device is not "
1265 "authorized to run as a HiperSockets network "
1266 "traffic analyzer\n");
1267 break;
1268 case IPA_RC_TRACE_ALREADY_ACTIVE:
1269 dev_warn(&card->gdev->dev, "A HiperSockets "
1270 "network traffic analyzer is already "
1271 "active in the HiperSockets LAN\n");
1272 break;
1273 default:
1274 break;
1275 }
1276 break;
1277 default:
1278 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1279 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1280 }
1281
1282 return 0;
1283}
1284
1285static int
1286qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1287{
1288 struct qeth_cmd_buffer *iob;
1289 struct qeth_ipa_cmd *cmd;
1290
1291 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1292
1293 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1294 if (!iob)
1295 return -ENOMEM;
1296 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1297 cmd->data.diagass.subcmd_len = 16;
1298 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1299 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1300 cmd->data.diagass.action = diags_cmd;
1301 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1302}
1303
1304static void qeth_l3_get_mac_for_ipm(__be32 ipm, char *mac)
1305{
1306 ip_eth_mc_map(ipm, mac);
1307}
1308
1309static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1310{
1311 struct qeth_ipaddr *addr;
1312 int i;
1313
1314 hash_for_each(card->ip_mc_htable, i, addr, hnode)
1315 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1316
1317}
1318
1319static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1320{
1321 struct qeth_ipaddr *addr;
1322 struct hlist_node *tmp;
1323 int i;
1324 int rc;
1325
1326 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1327 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1328 rc = qeth_l3_register_addr_entry(card, addr);
1329 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1330 addr->ref_counter = 1;
1331 else {
1332 hash_del(&addr->hnode);
1333 kfree(addr);
1334 }
1335 }
1336 }
1337
1338}
1339
1340static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1341{
1342 struct qeth_ipaddr *addr;
1343 struct hlist_node *tmp;
1344 int i;
1345 int rc;
1346
1347 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1348 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1349 rc = qeth_l3_deregister_addr_entry(card, addr);
1350 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1351 hash_del(&addr->hnode);
1352 kfree(addr);
1353 }
1354 }
1355 }
1356
1357}
1358
1359
1360static void
1361qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1362{
1363 struct ip_mc_list *im4;
1364 struct qeth_ipaddr *tmp, *ipm;
1365 char buf[MAX_ADDR_LEN];
1366
1367 QETH_CARD_TEXT(card, 4, "addmc");
1368
1369 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1370 if (!tmp)
1371 return;
1372
1373 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1374 im4 = rcu_dereference(im4->next_rcu)) {
1375 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1376
1377 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1378 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1379
1380 ipm = qeth_l3_ip_from_hash(card, tmp);
1381 if (ipm) {
1382 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1383 } else {
1384 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1385 if (!ipm)
1386 continue;
1387 memcpy(ipm->mac, buf, sizeof(tmp->mac));
1388 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1389 ipm->is_multicast = 1;
1390 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1391 hash_add(card->ip_mc_htable,
1392 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1393 }
1394 }
1395
1396 kfree(tmp);
1397}
1398
1399
1400static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1401{
1402 struct in_device *in_dev;
1403 u16 vid;
1404
1405 QETH_CARD_TEXT(card, 4, "addmcvl");
1406
1407 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1408 return;
1409
1410 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1411 struct net_device *netdev;
1412
1413 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1414 vid);
1415 if (netdev == NULL ||
1416 !(netdev->flags & IFF_UP))
1417 continue;
1418 in_dev = __in_dev_get_rcu(netdev);
1419 if (!in_dev)
1420 continue;
1421 qeth_l3_add_mc_to_hash(card, in_dev);
1422 }
1423}
1424
1425static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1426{
1427 struct in_device *in4_dev;
1428
1429 QETH_CARD_TEXT(card, 4, "chkmcv4");
1430
1431 rcu_read_lock();
1432 in4_dev = __in_dev_get_rcu(card->dev);
1433 if (in4_dev == NULL)
1434 goto unlock;
1435 qeth_l3_add_mc_to_hash(card, in4_dev);
1436 qeth_l3_add_vlan_mc(card);
1437unlock:
1438 rcu_read_unlock();
1439}
1440
1441#ifdef CONFIG_QETH_IPV6
1442static void
1443qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1444{
1445 struct qeth_ipaddr *ipm;
1446 struct ifmcaddr6 *im6;
1447 struct qeth_ipaddr *tmp;
1448 char buf[MAX_ADDR_LEN];
1449
1450 QETH_CARD_TEXT(card, 4, "addmc6");
1451
1452 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1453 if (!tmp)
1454 return;
1455
1456 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1457 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1458
1459 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1460 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1461 sizeof(struct in6_addr));
1462 tmp->is_multicast = 1;
1463
1464 ipm = qeth_l3_ip_from_hash(card, tmp);
1465 if (ipm) {
1466 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1467 continue;
1468 }
1469
1470 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1471 if (!ipm)
1472 continue;
1473
1474 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1475 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1476 sizeof(struct in6_addr));
1477 ipm->is_multicast = 1;
1478 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1479 hash_add(card->ip_mc_htable,
1480 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1481
1482 }
1483 kfree(tmp);
1484}
1485
1486
1487static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1488{
1489 struct inet6_dev *in_dev;
1490 u16 vid;
1491
1492 QETH_CARD_TEXT(card, 4, "admc6vl");
1493
1494 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1495 return;
1496
1497 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1498 struct net_device *netdev;
1499
1500 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1501 vid);
1502 if (netdev == NULL ||
1503 !(netdev->flags & IFF_UP))
1504 continue;
1505 in_dev = in6_dev_get(netdev);
1506 if (!in_dev)
1507 continue;
1508 read_lock_bh(&in_dev->lock);
1509 qeth_l3_add_mc6_to_hash(card, in_dev);
1510 read_unlock_bh(&in_dev->lock);
1511 in6_dev_put(in_dev);
1512 }
1513}
1514
1515static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1516{
1517 struct inet6_dev *in6_dev;
1518
1519 QETH_CARD_TEXT(card, 4, "chkmcv6");
1520
1521 if (!qeth_is_supported(card, IPA_IPV6))
1522 return ;
1523 in6_dev = in6_dev_get(card->dev);
1524 if (!in6_dev)
1525 return;
1526
1527 rcu_read_lock();
1528 read_lock_bh(&in6_dev->lock);
1529 qeth_l3_add_mc6_to_hash(card, in6_dev);
1530 qeth_l3_add_vlan_mc6(card);
1531 read_unlock_bh(&in6_dev->lock);
1532 rcu_read_unlock();
1533 in6_dev_put(in6_dev);
1534}
1535#endif
1536
1537static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1538 unsigned short vid)
1539{
1540 struct in_device *in_dev;
1541 struct in_ifaddr *ifa;
1542 struct qeth_ipaddr *addr;
1543 struct net_device *netdev;
1544
1545 QETH_CARD_TEXT(card, 4, "frvaddr4");
1546
1547 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1548 if (!netdev)
1549 return;
1550 in_dev = in_dev_get(netdev);
1551 if (!in_dev)
1552 return;
1553
1554 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1555 if (!addr)
1556 return;
1557
1558 spin_lock_bh(&card->ip_lock);
1559
1560 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1561 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
1562 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
1563 addr->type = QETH_IP_TYPE_NORMAL;
1564 qeth_l3_delete_ip(card, addr);
1565 }
1566
1567 spin_unlock_bh(&card->ip_lock);
1568
1569 kfree(addr);
1570 in_dev_put(in_dev);
1571}
1572
1573static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1574 unsigned short vid)
1575{
1576#ifdef CONFIG_QETH_IPV6
1577 struct inet6_dev *in6_dev;
1578 struct inet6_ifaddr *ifa;
1579 struct qeth_ipaddr *addr;
1580 struct net_device *netdev;
1581
1582 QETH_CARD_TEXT(card, 4, "frvaddr6");
1583
1584 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1585 if (!netdev)
1586 return;
1587
1588 in6_dev = in6_dev_get(netdev);
1589 if (!in6_dev)
1590 return;
1591
1592 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1593 if (!addr)
1594 return;
1595
1596 spin_lock_bh(&card->ip_lock);
1597
1598 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1599 memcpy(&addr->u.a6.addr, &ifa->addr,
1600 sizeof(struct in6_addr));
1601 addr->u.a6.pfxlen = ifa->prefix_len;
1602 addr->type = QETH_IP_TYPE_NORMAL;
1603 qeth_l3_delete_ip(card, addr);
1604 }
1605
1606 spin_unlock_bh(&card->ip_lock);
1607
1608 kfree(addr);
1609 in6_dev_put(in6_dev);
1610#endif
1611}
1612
1613static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1614 unsigned short vid)
1615{
1616 rcu_read_lock();
1617 qeth_l3_free_vlan_addresses4(card, vid);
1618 qeth_l3_free_vlan_addresses6(card, vid);
1619 rcu_read_unlock();
1620}
1621
1622static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1623 __be16 proto, u16 vid)
1624{
1625 struct qeth_card *card = dev->ml_priv;
1626
1627 set_bit(vid, card->active_vlans);
1628 return 0;
1629}
1630
1631static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1632 __be16 proto, u16 vid)
1633{
1634 struct qeth_card *card = dev->ml_priv;
1635
1636 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1637
1638 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1639 QETH_CARD_TEXT(card, 3, "kidREC");
1640 return 0;
1641 }
1642
1643 qeth_l3_free_vlan_addresses(card, vid);
1644 clear_bit(vid, card->active_vlans);
1645 qeth_l3_set_multicast_list(card->dev);
1646 return 0;
1647}
1648
1649static int qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1650 struct qeth_hdr *hdr, unsigned short *vlan_id)
1651{
1652 __u16 prot;
1653 struct iphdr *ip_hdr;
1654 unsigned char tg_addr[MAX_ADDR_LEN];
1655 int is_vlan = 0;
1656
1657 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1658 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1659 ETH_P_IP;
1660 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1661 case QETH_CAST_MULTICAST:
1662 switch (prot) {
1663#ifdef CONFIG_QETH_IPV6
1664 case ETH_P_IPV6:
1665 ndisc_mc_map((struct in6_addr *)
1666 skb->data + 24,
1667 tg_addr, card->dev, 0);
1668 break;
1669#endif
1670 case ETH_P_IP:
1671 ip_hdr = (struct iphdr *)skb->data;
1672 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1673 break;
1674 default:
1675 memcpy(tg_addr, card->dev->broadcast,
1676 card->dev->addr_len);
1677 }
1678 card->stats.multicast++;
1679 skb->pkt_type = PACKET_MULTICAST;
1680 break;
1681 case QETH_CAST_BROADCAST:
1682 memcpy(tg_addr, card->dev->broadcast,
1683 card->dev->addr_len);
1684 card->stats.multicast++;
1685 skb->pkt_type = PACKET_BROADCAST;
1686 break;
1687 case QETH_CAST_UNICAST:
1688 case QETH_CAST_ANYCAST:
1689 case QETH_CAST_NOCAST:
1690 default:
1691 if (card->options.sniffer)
1692 skb->pkt_type = PACKET_OTHERHOST;
1693 else
1694 skb->pkt_type = PACKET_HOST;
1695 memcpy(tg_addr, card->dev->dev_addr,
1696 card->dev->addr_len);
1697 }
1698 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1699 card->dev->header_ops->create(skb, card->dev, prot,
1700 tg_addr, &hdr->hdr.l3.dest_addr[2],
1701 card->dev->addr_len);
1702 else
1703 card->dev->header_ops->create(skb, card->dev, prot,
1704 tg_addr, "FAKELL", card->dev->addr_len);
1705 }
1706
1707 skb->protocol = eth_type_trans(skb, card->dev);
1708
1709 if (hdr->hdr.l3.ext_flags &
1710 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1711 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1712 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1713 is_vlan = 1;
1714 }
1715
1716 if (card->dev->features & NETIF_F_RXCSUM) {
1717 if ((hdr->hdr.l3.ext_flags &
1718 (QETH_HDR_EXT_CSUM_HDR_REQ |
1719 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1720 (QETH_HDR_EXT_CSUM_HDR_REQ |
1721 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1722 skb->ip_summed = CHECKSUM_UNNECESSARY;
1723 else
1724 skb->ip_summed = CHECKSUM_NONE;
1725 } else
1726 skb->ip_summed = CHECKSUM_NONE;
1727 return is_vlan;
1728}
1729
1730static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1731 int budget, int *done)
1732{
1733 int work_done = 0;
1734 struct sk_buff *skb;
1735 struct qeth_hdr *hdr;
1736 __u16 vlan_tag = 0;
1737 int is_vlan;
1738 unsigned int len;
1739 __u16 magic;
1740
1741 *done = 0;
1742 WARN_ON_ONCE(!budget);
1743 while (budget) {
1744 skb = qeth_core_get_next_skb(card,
1745 &card->qdio.in_q->bufs[card->rx.b_index],
1746 &card->rx.b_element, &card->rx.e_offset, &hdr);
1747 if (!skb) {
1748 *done = 1;
1749 break;
1750 }
1751 skb->dev = card->dev;
1752 switch (hdr->hdr.l3.id) {
1753 case QETH_HEADER_TYPE_LAYER3:
1754 magic = *(__u16 *)skb->data;
1755 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1756 (magic == ETH_P_AF_IUCV)) {
1757 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1758 skb->pkt_type = PACKET_HOST;
1759 skb->mac_header = NET_SKB_PAD;
1760 skb->dev = card->dev;
1761 len = skb->len;
1762 card->dev->header_ops->create(skb, card->dev, 0,
1763 card->dev->dev_addr, "FAKELL",
1764 card->dev->addr_len);
1765 netif_receive_skb(skb);
1766 } else {
1767 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1768 &vlan_tag);
1769 len = skb->len;
1770 if (is_vlan && !card->options.sniffer)
1771 __vlan_hwaccel_put_tag(skb,
1772 htons(ETH_P_8021Q), vlan_tag);
1773 napi_gro_receive(&card->napi, skb);
1774 }
1775 break;
1776 case QETH_HEADER_TYPE_LAYER2:
1777 skb->pkt_type = PACKET_HOST;
1778 skb->protocol = eth_type_trans(skb, skb->dev);
1779 len = skb->len;
1780 netif_receive_skb(skb);
1781 break;
1782 default:
1783 dev_kfree_skb_any(skb);
1784 QETH_CARD_TEXT(card, 3, "inbunkno");
1785 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1786 continue;
1787 }
1788 work_done++;
1789 budget--;
1790 card->stats.rx_packets++;
1791 card->stats.rx_bytes += len;
1792 }
1793 return work_done;
1794}
1795
1796static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1797 struct qeth_card *card)
1798{
1799 int rc = 0;
1800 u16 vid;
1801
1802 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1803 struct net_device *netdev;
1804
1805 rcu_read_lock();
1806 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1807 vid);
1808 rcu_read_unlock();
1809 if (netdev == dev) {
1810 rc = QETH_VLAN_CARD;
1811 break;
1812 }
1813 }
1814
1815 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1816 return 0;
1817
1818 return rc;
1819}
1820
1821static int qeth_l3_verify_dev(struct net_device *dev)
1822{
1823 struct qeth_card *card;
1824 int rc = 0;
1825 unsigned long flags;
1826
1827 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1828 list_for_each_entry(card, &qeth_core_card_list.list, list) {
1829 if (card->dev == dev) {
1830 rc = QETH_REAL_CARD;
1831 break;
1832 }
1833 rc = qeth_l3_verify_vlan_dev(dev, card);
1834 if (rc)
1835 break;
1836 }
1837 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1838
1839 return rc;
1840}
1841
1842static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1843{
1844 struct qeth_card *card = NULL;
1845 int rc;
1846
1847 rc = qeth_l3_verify_dev(dev);
1848 if (rc == QETH_REAL_CARD)
1849 card = dev->ml_priv;
1850 else if (rc == QETH_VLAN_CARD)
1851 card = vlan_dev_real_dev(dev)->ml_priv;
1852 if (card && card->options.layer2)
1853 card = NULL;
1854 if (card)
1855 QETH_CARD_TEXT_(card, 4, "%d", rc);
1856 return card ;
1857}
1858
1859static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1860{
1861 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1862 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1863
1864 qeth_set_allowed_threads(card, 0, 1);
1865 if (card->options.sniffer &&
1866 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1867 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1868 if (card->read.state == CH_STATE_UP &&
1869 card->write.state == CH_STATE_UP &&
1870 (card->state == CARD_STATE_UP)) {
1871 if (recovery_mode)
1872 qeth_l3_stop(card->dev);
1873 else {
1874 rtnl_lock();
1875 dev_close(card->dev);
1876 rtnl_unlock();
1877 }
1878 card->state = CARD_STATE_SOFTSETUP;
1879 }
1880 if (card->state == CARD_STATE_SOFTSETUP) {
1881 qeth_l3_clear_ip_htable(card, 1);
1882 qeth_clear_ipacmd_list(card);
1883 card->state = CARD_STATE_HARDSETUP;
1884 }
1885 if (card->state == CARD_STATE_HARDSETUP) {
1886 qeth_qdio_clear_card(card, 0);
1887 qeth_clear_qdio_buffers(card);
1888 qeth_clear_working_pool_list(card);
1889 card->state = CARD_STATE_DOWN;
1890 }
1891 if (card->state == CARD_STATE_DOWN) {
1892 qeth_clear_cmd_buffers(&card->read);
1893 qeth_clear_cmd_buffers(&card->write);
1894 }
1895}
1896
1897
1898
1899
1900
1901static void
1902qeth_l3_handle_promisc_mode(struct qeth_card *card)
1903{
1904 struct net_device *dev = card->dev;
1905
1906 if (((dev->flags & IFF_PROMISC) &&
1907 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1908 (!(dev->flags & IFF_PROMISC) &&
1909 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1910 return;
1911
1912 if (card->info.guestlan) {
1913 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1914 qeth_setadp_promisc_mode(card);
1915 } else if (card->options.sniffer &&
1916 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1917 if (dev->flags & IFF_PROMISC) {
1918 QETH_CARD_TEXT(card, 3, "+promisc");
1919 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1920 } else {
1921 QETH_CARD_TEXT(card, 3, "-promisc");
1922 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1923 }
1924 }
1925}
1926
1927static void qeth_l3_set_multicast_list(struct net_device *dev)
1928{
1929 struct qeth_card *card = dev->ml_priv;
1930
1931 QETH_CARD_TEXT(card, 3, "setmulti");
1932 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1933 (card->state != CARD_STATE_UP))
1934 return;
1935 if (!card->options.sniffer) {
1936
1937 spin_lock_bh(&card->mclock);
1938
1939 qeth_l3_mark_all_mc_to_be_deleted(card);
1940
1941 qeth_l3_add_multicast_ipv4(card);
1942#ifdef CONFIG_QETH_IPV6
1943 qeth_l3_add_multicast_ipv6(card);
1944#endif
1945 qeth_l3_delete_nonused_mc(card);
1946 qeth_l3_add_all_new_mc(card);
1947
1948 spin_unlock_bh(&card->mclock);
1949
1950 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1951 return;
1952 }
1953 qeth_l3_handle_promisc_mode(card);
1954}
1955
1956static const char *qeth_l3_arp_get_error_cause(int *rc)
1957{
1958 switch (*rc) {
1959 case QETH_IPA_ARP_RC_FAILED:
1960 *rc = -EIO;
1961 return "operation failed";
1962 case QETH_IPA_ARP_RC_NOTSUPP:
1963 *rc = -EOPNOTSUPP;
1964 return "operation not supported";
1965 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1966 *rc = -EINVAL;
1967 return "argument out of range";
1968 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1969 *rc = -EOPNOTSUPP;
1970 return "query operation not supported";
1971 case QETH_IPA_ARP_RC_Q_NO_DATA:
1972 *rc = -ENOENT;
1973 return "no query data available";
1974 default:
1975 return "unknown error";
1976 }
1977}
1978
1979static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1980{
1981 int tmp;
1982 int rc;
1983
1984 QETH_CARD_TEXT(card, 3, "arpstnoe");
1985
1986
1987
1988
1989
1990
1991 if (card->info.guestlan)
1992 return -EOPNOTSUPP;
1993 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1994 return -EOPNOTSUPP;
1995 }
1996 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1997 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1998 no_entries);
1999 if (rc) {
2000 tmp = rc;
2001 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2002 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2003 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2004 }
2005 return rc;
2006}
2007
2008static __u32 get_arp_entry_size(struct qeth_card *card,
2009 struct qeth_arp_query_data *qdata,
2010 struct qeth_arp_entrytype *type, __u8 strip_entries)
2011{
2012 __u32 rc;
2013 __u8 is_hsi;
2014
2015 is_hsi = qdata->reply_bits == 5;
2016 if (type->ip == QETHARP_IP_ADDR_V4) {
2017 QETH_CARD_TEXT(card, 4, "arpev4");
2018 if (strip_entries) {
2019 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2020 sizeof(struct qeth_arp_qi_entry7_short);
2021 } else {
2022 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2023 sizeof(struct qeth_arp_qi_entry7);
2024 }
2025 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2026 QETH_CARD_TEXT(card, 4, "arpev6");
2027 if (strip_entries) {
2028 rc = is_hsi ?
2029 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2030 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2031 } else {
2032 rc = is_hsi ?
2033 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2034 sizeof(struct qeth_arp_qi_entry7_ipv6);
2035 }
2036 } else {
2037 QETH_CARD_TEXT(card, 4, "arpinv");
2038 rc = 0;
2039 }
2040
2041 return rc;
2042}
2043
2044static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2045{
2046 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2047 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2048}
2049
2050static int qeth_l3_arp_query_cb(struct qeth_card *card,
2051 struct qeth_reply *reply, unsigned long data)
2052{
2053 struct qeth_ipa_cmd *cmd;
2054 struct qeth_arp_query_data *qdata;
2055 struct qeth_arp_query_info *qinfo;
2056 int i;
2057 int e;
2058 int entrybytes_done;
2059 int stripped_bytes;
2060 __u8 do_strip_entries;
2061
2062 QETH_CARD_TEXT(card, 3, "arpquecb");
2063
2064 qinfo = (struct qeth_arp_query_info *) reply->param;
2065 cmd = (struct qeth_ipa_cmd *) data;
2066 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2067 if (cmd->hdr.return_code) {
2068 QETH_CARD_TEXT(card, 4, "arpcberr");
2069 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2070 return 0;
2071 }
2072 if (cmd->data.setassparms.hdr.return_code) {
2073 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2074 QETH_CARD_TEXT(card, 4, "setaperr");
2075 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2076 return 0;
2077 }
2078 qdata = &cmd->data.setassparms.data.query_arp;
2079 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2080
2081 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2082 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2083 entrybytes_done = 0;
2084 for (e = 0; e < qdata->no_entries; ++e) {
2085 char *cur_entry;
2086 __u32 esize;
2087 struct qeth_arp_entrytype *etype;
2088
2089 cur_entry = &qdata->data + entrybytes_done;
2090 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2091 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2092 QETH_CARD_TEXT(card, 4, "pmis");
2093 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2094 break;
2095 }
2096 esize = get_arp_entry_size(card, qdata, etype,
2097 do_strip_entries);
2098 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2099 if (!esize)
2100 break;
2101
2102 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2103 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2104 cmd->hdr.return_code = IPA_RC_ENOMEM;
2105 goto out_error;
2106 }
2107
2108 memcpy(qinfo->udata + qinfo->udata_offset,
2109 &qdata->data + entrybytes_done + stripped_bytes,
2110 esize);
2111 entrybytes_done += esize + stripped_bytes;
2112 qinfo->udata_offset += esize;
2113 ++qinfo->no_entries;
2114 }
2115
2116 if (cmd->data.setassparms.hdr.seq_no <
2117 cmd->data.setassparms.hdr.number_of_replies)
2118 return 1;
2119 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2120 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2121
2122
2123 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2124 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2125 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2126 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2127 return 0;
2128out_error:
2129 i = 0;
2130 memcpy(qinfo->udata, &i, 4);
2131 return 0;
2132}
2133
2134static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2135 struct qeth_cmd_buffer *iob, int len,
2136 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2137 unsigned long),
2138 void *reply_param)
2139{
2140 QETH_CARD_TEXT(card, 4, "sendarp");
2141
2142 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2143 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2144 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2145 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2146 reply_cb, reply_param);
2147}
2148
2149static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2150 enum qeth_prot_versions prot,
2151 struct qeth_arp_query_info *qinfo)
2152{
2153 struct qeth_cmd_buffer *iob;
2154 struct qeth_ipa_cmd *cmd;
2155 int tmp;
2156 int rc;
2157
2158 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2159
2160 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2161 IPA_CMD_ASS_ARP_QUERY_INFO,
2162 sizeof(struct qeth_arp_query_data)
2163 - sizeof(char),
2164 prot);
2165 if (!iob)
2166 return -ENOMEM;
2167 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2168 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2169 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2170 cmd->data.setassparms.data.query_arp.no_entries = 0;
2171 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2172 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2173 qeth_l3_arp_query_cb, (void *)qinfo);
2174 if (rc) {
2175 tmp = rc;
2176 QETH_DBF_MESSAGE(2,
2177 "Error while querying ARP cache on %s: %s "
2178 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2179 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2180 }
2181
2182 return rc;
2183}
2184
2185static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2186{
2187 struct qeth_arp_query_info qinfo = {0, };
2188 int rc;
2189
2190 QETH_CARD_TEXT(card, 3, "arpquery");
2191
2192 if (!qeth_is_supported(card,
2193 IPA_ARP_PROCESSING)) {
2194 QETH_CARD_TEXT(card, 3, "arpqnsup");
2195 rc = -EOPNOTSUPP;
2196 goto out;
2197 }
2198
2199 if (copy_from_user(&qinfo, udata, 6)) {
2200 rc = -EFAULT;
2201 goto out;
2202 }
2203 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2204 if (!qinfo.udata) {
2205 rc = -ENOMEM;
2206 goto out;
2207 }
2208 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2209 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2210 if (rc) {
2211 if (copy_to_user(udata, qinfo.udata, 4))
2212 rc = -EFAULT;
2213 goto free_and_out;
2214 }
2215#ifdef CONFIG_QETH_IPV6
2216 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2217
2218 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2219 }
2220#endif
2221 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2222 QETH_CARD_TEXT(card, 4, "qactf");
2223 rc = -EFAULT;
2224 goto free_and_out;
2225 }
2226 QETH_CARD_TEXT(card, 4, "qacts");
2227
2228free_and_out:
2229 kfree(qinfo.udata);
2230out:
2231 return rc;
2232}
2233
2234static int qeth_l3_arp_add_entry(struct qeth_card *card,
2235 struct qeth_arp_cache_entry *entry)
2236{
2237 struct qeth_cmd_buffer *iob;
2238 char buf[16];
2239 int tmp;
2240 int rc;
2241
2242 QETH_CARD_TEXT(card, 3, "arpadent");
2243
2244
2245
2246
2247
2248
2249 if (card->info.guestlan)
2250 return -EOPNOTSUPP;
2251 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2252 return -EOPNOTSUPP;
2253 }
2254
2255 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2256 IPA_CMD_ASS_ARP_ADD_ENTRY,
2257 sizeof(struct qeth_arp_cache_entry),
2258 QETH_PROT_IPV4);
2259 if (!iob)
2260 return -ENOMEM;
2261 rc = qeth_send_setassparms(card, iob,
2262 sizeof(struct qeth_arp_cache_entry),
2263 (unsigned long) entry,
2264 qeth_setassparms_cb, NULL);
2265 if (rc) {
2266 tmp = rc;
2267 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2268 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2269 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2270 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2271 }
2272 return rc;
2273}
2274
2275static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2276 struct qeth_arp_cache_entry *entry)
2277{
2278 struct qeth_cmd_buffer *iob;
2279 char buf[16] = {0, };
2280 int tmp;
2281 int rc;
2282
2283 QETH_CARD_TEXT(card, 3, "arprment");
2284
2285
2286
2287
2288
2289
2290 if (card->info.guestlan)
2291 return -EOPNOTSUPP;
2292 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2293 return -EOPNOTSUPP;
2294 }
2295 memcpy(buf, entry, 12);
2296 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2297 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2298 12,
2299 QETH_PROT_IPV4);
2300 if (!iob)
2301 return -ENOMEM;
2302 rc = qeth_send_setassparms(card, iob,
2303 12, (unsigned long)buf,
2304 qeth_setassparms_cb, NULL);
2305 if (rc) {
2306 tmp = rc;
2307 memset(buf, 0, 16);
2308 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2309 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2310 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2311 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2312 }
2313 return rc;
2314}
2315
2316static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2317{
2318 int rc;
2319 int tmp;
2320
2321 QETH_CARD_TEXT(card, 3, "arpflush");
2322
2323
2324
2325
2326
2327
2328 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2329 return -EOPNOTSUPP;
2330 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2331 return -EOPNOTSUPP;
2332 }
2333 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2334 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2335 if (rc) {
2336 tmp = rc;
2337 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2338 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2339 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2340 }
2341 return rc;
2342}
2343
2344static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2345{
2346 struct qeth_card *card = dev->ml_priv;
2347 struct qeth_arp_cache_entry arp_entry;
2348 int rc = 0;
2349
2350 switch (cmd) {
2351 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2352 if (!capable(CAP_NET_ADMIN)) {
2353 rc = -EPERM;
2354 break;
2355 }
2356 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2357 break;
2358 case SIOC_QETH_ARP_QUERY_INFO:
2359 if (!capable(CAP_NET_ADMIN)) {
2360 rc = -EPERM;
2361 break;
2362 }
2363 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2364 break;
2365 case SIOC_QETH_ARP_ADD_ENTRY:
2366 if (!capable(CAP_NET_ADMIN)) {
2367 rc = -EPERM;
2368 break;
2369 }
2370 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2371 sizeof(struct qeth_arp_cache_entry)))
2372 rc = -EFAULT;
2373 else
2374 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2375 break;
2376 case SIOC_QETH_ARP_REMOVE_ENTRY:
2377 if (!capable(CAP_NET_ADMIN)) {
2378 rc = -EPERM;
2379 break;
2380 }
2381 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2382 sizeof(struct qeth_arp_cache_entry)))
2383 rc = -EFAULT;
2384 else
2385 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2386 break;
2387 case SIOC_QETH_ARP_FLUSH_CACHE:
2388 if (!capable(CAP_NET_ADMIN)) {
2389 rc = -EPERM;
2390 break;
2391 }
2392 rc = qeth_l3_arp_flush_cache(card);
2393 break;
2394 default:
2395 rc = -EOPNOTSUPP;
2396 }
2397 return rc;
2398}
2399
2400static int qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2401{
2402 int cast_type = RTN_UNSPEC;
2403 struct neighbour *n = NULL;
2404 struct dst_entry *dst;
2405
2406 rcu_read_lock();
2407 dst = skb_dst(skb);
2408 if (dst)
2409 n = dst_neigh_lookup_skb(dst, skb);
2410 if (n) {
2411 cast_type = n->type;
2412 rcu_read_unlock();
2413 neigh_release(n);
2414 if ((cast_type == RTN_BROADCAST) ||
2415 (cast_type == RTN_MULTICAST) ||
2416 (cast_type == RTN_ANYCAST))
2417 return cast_type;
2418 else
2419 return RTN_UNSPEC;
2420 }
2421 rcu_read_unlock();
2422
2423
2424 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
2425 return (skb_network_header(skb)[24] == 0xff) ?
2426 RTN_MULTICAST : 0;
2427 else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
2428 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2429 RTN_MULTICAST : 0;
2430
2431 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2432 return RTN_BROADCAST;
2433 else {
2434 u16 hdr_mac;
2435
2436 hdr_mac = *((u16 *)skb->data);
2437
2438 switch (card->info.link_type) {
2439 case QETH_LINK_TYPE_HSTR:
2440 case QETH_LINK_TYPE_LANE_TR:
2441 if ((hdr_mac == QETH_TR_MAC_NC) ||
2442 (hdr_mac == QETH_TR_MAC_C))
2443 return RTN_MULTICAST;
2444 break;
2445
2446 default:
2447 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2448 (hdr_mac == QETH_ETH_MAC_V6))
2449 return RTN_MULTICAST;
2450 }
2451 }
2452 return cast_type;
2453}
2454
2455static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2456 struct qeth_hdr *hdr, struct sk_buff *skb)
2457{
2458 char daddr[16];
2459 struct af_iucv_trans_hdr *iucv_hdr;
2460
2461 memset(hdr, 0, sizeof(struct qeth_hdr));
2462 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2463 hdr->hdr.l3.ext_flags = 0;
2464 hdr->hdr.l3.length = skb->len - ETH_HLEN;
2465 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2466
2467 iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2468 memset(daddr, 0, sizeof(daddr));
2469 daddr[0] = 0xfe;
2470 daddr[1] = 0x80;
2471 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2472 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2473}
2474
2475static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2476 struct sk_buff *skb, int ipv, int cast_type)
2477{
2478 struct dst_entry *dst;
2479
2480 memset(hdr, 0, sizeof(struct qeth_hdr));
2481 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2482 hdr->hdr.l3.ext_flags = 0;
2483
2484
2485
2486
2487
2488 if (skb_vlan_tag_present(skb)) {
2489 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2490 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2491 else
2492 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2493 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2494 }
2495
2496 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2497
2498 rcu_read_lock();
2499 dst = skb_dst(skb);
2500 if (ipv == 4) {
2501 struct rtable *rt = (struct rtable *) dst;
2502 __be32 *pkey = &ip_hdr(skb)->daddr;
2503
2504 if (rt && rt->rt_gateway)
2505 pkey = &rt->rt_gateway;
2506
2507
2508 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2509 memset(hdr->hdr.l3.dest_addr, 0, 12);
2510 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2511 } else if (ipv == 6) {
2512 struct rt6_info *rt = (struct rt6_info *) dst;
2513 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2514
2515 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2516 pkey = &rt->rt6i_gateway;
2517
2518
2519 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2520 if (card->info.type == QETH_CARD_TYPE_IQD)
2521 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2522 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2523 } else {
2524 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2525 skb->dev->broadcast, 6)) {
2526
2527 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2528 QETH_HDR_PASSTHRU;
2529 } else {
2530 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2531 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2532 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2533 }
2534 }
2535 rcu_read_unlock();
2536}
2537
2538static void qeth_l3_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr,
2539 struct sk_buff *skb)
2540{
2541 struct iphdr *iph = ip_hdr(skb);
2542
2543
2544
2545
2546 if (iph->protocol == IPPROTO_UDP)
2547 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2548 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2549 QETH_HDR_EXT_CSUM_HDR_REQ;
2550 iph->check = 0;
2551 if (card->options.performance_stats)
2552 card->perf_stats.tx_csum++;
2553}
2554
2555static void qeth_tso_fill_header(struct qeth_card *card,
2556 struct qeth_hdr *qhdr, struct sk_buff *skb)
2557{
2558 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2559 struct tcphdr *tcph = tcp_hdr(skb);
2560 struct iphdr *iph = ip_hdr(skb);
2561 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2562
2563
2564 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2565 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2566
2567 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2568 hdr->ext.imb_hdr_no = 1;
2569 hdr->ext.hdr_type = 1;
2570 hdr->ext.hdr_version = 1;
2571 hdr->ext.hdr_len = 28;
2572
2573 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2574 hdr->ext.dg_hdr_len = (__u16)(ip_hdrlen(skb) + tcp_hdrlen(skb));
2575 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2576 sizeof(struct qeth_hdr_tso));
2577 tcph->check = 0;
2578 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2579 ip6h->payload_len = 0;
2580 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2581 0, IPPROTO_TCP, 0);
2582 } else {
2583
2584 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2585 0, IPPROTO_TCP, 0);
2586 iph->tot_len = 0;
2587 iph->check = 0;
2588 }
2589}
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2605 struct sk_buff *skb, int extra_elems)
2606{
2607 addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2608 int elements = qeth_get_elements_for_range(
2609 tcpdptr,
2610 (addr_t)skb->data + skb_headlen(skb)) +
2611 qeth_get_elements_for_frags(skb);
2612
2613 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2614 QETH_DBF_MESSAGE(2,
2615 "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2616 elements + extra_elems, skb->len);
2617 return 0;
2618 }
2619 return elements;
2620}
2621
2622static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2623 struct net_device *dev)
2624{
2625 int rc;
2626 __be16 *tag;
2627 struct qeth_hdr *hdr = NULL;
2628 int hdr_elements = 0;
2629 int elements;
2630 struct qeth_card *card = dev->ml_priv;
2631 struct sk_buff *new_skb = NULL;
2632 int ipv = qeth_get_ip_version(skb);
2633 int cast_type = qeth_l3_get_cast_type(card, skb);
2634 struct qeth_qdio_out_q *queue =
2635 card->qdio.out_qs[card->qdio.do_prio_queueing
2636 || (cast_type && card->info.is_multicast_different) ?
2637 qeth_get_priority_queue(card, skb, ipv, cast_type) :
2638 card->qdio.default_out_queue];
2639 int tx_bytes = skb->len;
2640 unsigned int hd_len = 0;
2641 bool use_tso;
2642 int data_offset = -1;
2643 unsigned int nr_frags;
2644
2645 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2646 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2647 ((card->options.cq == QETH_CQ_ENABLED) &&
2648 (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) ||
2649 card->options.sniffer)
2650 goto tx_drop;
2651
2652 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2653 card->stats.tx_carrier_errors++;
2654 goto tx_drop;
2655 }
2656
2657 if ((cast_type == RTN_BROADCAST) &&
2658 (card->info.broadcast_capable == 0))
2659 goto tx_drop;
2660
2661 if (card->options.performance_stats) {
2662 card->perf_stats.outbound_cnt++;
2663 card->perf_stats.outbound_start_time = qeth_get_micros();
2664 }
2665
2666
2667 use_tso = skb_is_gso(skb) &&
2668 (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4);
2669
2670 if (card->info.type == QETH_CARD_TYPE_IQD) {
2671 new_skb = skb;
2672 data_offset = ETH_HLEN;
2673 hd_len = sizeof(*hdr);
2674 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2675 if (!hdr)
2676 goto tx_drop;
2677 hdr_elements++;
2678 } else {
2679
2680 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2681 + VLAN_HLEN);
2682 if (!new_skb)
2683 goto tx_drop;
2684
2685 if (ipv == 4) {
2686 skb_pull(new_skb, ETH_HLEN);
2687 }
2688
2689 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2690 skb_push(new_skb, VLAN_HLEN);
2691 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2692 skb_copy_to_linear_data_offset(new_skb, 4,
2693 new_skb->data + 8, 4);
2694 skb_copy_to_linear_data_offset(new_skb, 8,
2695 new_skb->data + 12, 4);
2696 tag = (__be16 *)(new_skb->data + 12);
2697 *tag = cpu_to_be16(ETH_P_8021Q);
2698 *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2699 }
2700 }
2701
2702 netif_stop_queue(dev);
2703
2704
2705
2706
2707 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2708 ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2709 (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2710 int lin_rc = skb_linearize(new_skb);
2711
2712 if (card->options.performance_stats) {
2713 if (lin_rc)
2714 card->perf_stats.tx_linfail++;
2715 else
2716 card->perf_stats.tx_lin++;
2717 }
2718 if (lin_rc)
2719 goto tx_drop;
2720 }
2721 nr_frags = skb_shinfo(new_skb)->nr_frags;
2722
2723 if (use_tso) {
2724 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2725 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2726 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2727 qeth_tso_fill_header(card, hdr, new_skb);
2728 hdr_elements++;
2729 } else {
2730 if (data_offset < 0) {
2731 hdr = skb_push(new_skb, sizeof(struct qeth_hdr));
2732 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2733 cast_type);
2734 } else {
2735 if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV)
2736 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2737 else {
2738 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2739 cast_type);
2740 hdr->hdr.l3.length = new_skb->len - data_offset;
2741 }
2742 }
2743
2744 if (skb->ip_summed == CHECKSUM_PARTIAL)
2745 qeth_l3_hdr_csum(card, hdr, new_skb);
2746 }
2747
2748 elements = use_tso ?
2749 qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2750 qeth_get_elements_no(card, new_skb, hdr_elements,
2751 (data_offset > 0) ? data_offset : 0);
2752 if (!elements) {
2753 if (data_offset >= 0)
2754 kmem_cache_free(qeth_core_header_cache, hdr);
2755 goto tx_drop;
2756 }
2757 elements += hdr_elements;
2758
2759 if (card->info.type != QETH_CARD_TYPE_IQD) {
2760 int len;
2761 if (use_tso) {
2762 hd_len = sizeof(struct qeth_hdr_tso) +
2763 ip_hdrlen(new_skb) + tcp_hdrlen(new_skb);
2764 len = hd_len;
2765 } else {
2766 len = sizeof(struct qeth_hdr_layer3);
2767 }
2768
2769 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2770 goto tx_drop;
2771 rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len,
2772 hd_len, elements);
2773 } else
2774 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2775 data_offset, hd_len);
2776
2777 if (!rc) {
2778 card->stats.tx_packets++;
2779 card->stats.tx_bytes += tx_bytes;
2780 if (new_skb != skb)
2781 dev_kfree_skb_any(skb);
2782 if (card->options.performance_stats) {
2783 if (use_tso) {
2784 card->perf_stats.large_send_bytes += tx_bytes;
2785 card->perf_stats.large_send_cnt++;
2786 }
2787 if (nr_frags) {
2788 card->perf_stats.sg_skbs_sent++;
2789
2790 card->perf_stats.sg_frags_sent += nr_frags + 1;
2791 }
2792 }
2793 rc = NETDEV_TX_OK;
2794 } else {
2795 if (data_offset >= 0)
2796 kmem_cache_free(qeth_core_header_cache, hdr);
2797
2798 if (rc == -EBUSY) {
2799 if (new_skb != skb)
2800 dev_kfree_skb_any(new_skb);
2801 return NETDEV_TX_BUSY;
2802 } else
2803 goto tx_drop;
2804 }
2805
2806 netif_wake_queue(dev);
2807 if (card->options.performance_stats)
2808 card->perf_stats.outbound_time += qeth_get_micros() -
2809 card->perf_stats.outbound_start_time;
2810 return rc;
2811
2812tx_drop:
2813 card->stats.tx_dropped++;
2814 card->stats.tx_errors++;
2815 if ((new_skb != skb) && new_skb)
2816 dev_kfree_skb_any(new_skb);
2817 dev_kfree_skb_any(skb);
2818 netif_wake_queue(dev);
2819 return NETDEV_TX_OK;
2820}
2821
2822static int __qeth_l3_open(struct net_device *dev)
2823{
2824 struct qeth_card *card = dev->ml_priv;
2825 int rc = 0;
2826
2827 QETH_CARD_TEXT(card, 4, "qethopen");
2828 if (card->state == CARD_STATE_UP)
2829 return rc;
2830 if (card->state != CARD_STATE_SOFTSETUP)
2831 return -ENODEV;
2832 card->data.state = CH_STATE_UP;
2833 card->state = CARD_STATE_UP;
2834 netif_start_queue(dev);
2835
2836 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2837 napi_enable(&card->napi);
2838 napi_schedule(&card->napi);
2839 } else
2840 rc = -EIO;
2841 return rc;
2842}
2843
2844static int qeth_l3_open(struct net_device *dev)
2845{
2846 struct qeth_card *card = dev->ml_priv;
2847
2848 QETH_CARD_TEXT(card, 5, "qethope_");
2849 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2850 QETH_CARD_TEXT(card, 3, "openREC");
2851 return -ERESTARTSYS;
2852 }
2853 return __qeth_l3_open(dev);
2854}
2855
2856static int qeth_l3_stop(struct net_device *dev)
2857{
2858 struct qeth_card *card = dev->ml_priv;
2859
2860 QETH_CARD_TEXT(card, 4, "qethstop");
2861 netif_tx_disable(dev);
2862 if (card->state == CARD_STATE_UP) {
2863 card->state = CARD_STATE_SOFTSETUP;
2864 napi_disable(&card->napi);
2865 }
2866 return 0;
2867}
2868
2869static const struct ethtool_ops qeth_l3_ethtool_ops = {
2870 .get_link = ethtool_op_get_link,
2871 .get_strings = qeth_core_get_strings,
2872 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2873 .get_sset_count = qeth_core_get_sset_count,
2874 .get_drvinfo = qeth_core_get_drvinfo,
2875 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2876};
2877
2878
2879
2880
2881
2882
2883
2884
2885static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2886{
2887 n->nud_state = NUD_NOARP;
2888 memcpy(n->ha, "FAKELL", 6);
2889 n->output = n->ops->connected_output;
2890 return 0;
2891}
2892
2893static int
2894qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2895{
2896 if (np->tbl->family == AF_INET)
2897 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2898
2899 return 0;
2900}
2901
2902static const struct net_device_ops qeth_l3_netdev_ops = {
2903 .ndo_open = qeth_l3_open,
2904 .ndo_stop = qeth_l3_stop,
2905 .ndo_get_stats = qeth_get_stats,
2906 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2907 .ndo_validate_addr = eth_validate_addr,
2908 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
2909 .ndo_do_ioctl = qeth_do_ioctl,
2910 .ndo_change_mtu = qeth_change_mtu,
2911 .ndo_fix_features = qeth_fix_features,
2912 .ndo_set_features = qeth_set_features,
2913 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2914 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2915 .ndo_tx_timeout = qeth_tx_timeout,
2916};
2917
2918static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2919 .ndo_open = qeth_l3_open,
2920 .ndo_stop = qeth_l3_stop,
2921 .ndo_get_stats = qeth_get_stats,
2922 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2923 .ndo_validate_addr = eth_validate_addr,
2924 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
2925 .ndo_do_ioctl = qeth_do_ioctl,
2926 .ndo_change_mtu = qeth_change_mtu,
2927 .ndo_fix_features = qeth_fix_features,
2928 .ndo_set_features = qeth_set_features,
2929 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2930 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2931 .ndo_tx_timeout = qeth_tx_timeout,
2932 .ndo_neigh_setup = qeth_l3_neigh_setup,
2933};
2934
2935static int qeth_l3_setup_netdev(struct qeth_card *card)
2936{
2937 int rc;
2938
2939 if (card->info.type == QETH_CARD_TYPE_OSD ||
2940 card->info.type == QETH_CARD_TYPE_OSX) {
2941 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2942 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2943 pr_info("qeth_l3: ignoring TR device\n");
2944 return -ENODEV;
2945 } else {
2946 card->dev = alloc_etherdev(0);
2947 if (!card->dev)
2948 return -ENODEV;
2949 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2950
2951
2952 qeth_l3_get_unique_id(card);
2953 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2954 card->dev->dev_id = card->info.unique_id &
2955 0xffff;
2956 if (!card->info.guestlan) {
2957 card->dev->hw_features = NETIF_F_SG |
2958 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2959 NETIF_F_TSO;
2960 card->dev->vlan_features = NETIF_F_SG |
2961 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2962 NETIF_F_TSO;
2963 }
2964 }
2965 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2966 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
2967 ether_setup);
2968 if (!card->dev)
2969 return -ENODEV;
2970 card->dev->flags |= IFF_NOARP;
2971 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2972 rc = qeth_l3_iqd_read_initial_mac(card);
2973 if (rc)
2974 return rc;
2975 if (card->options.hsuid[0])
2976 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2977 } else
2978 return -ENODEV;
2979
2980 card->dev->ml_priv = card;
2981 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2982 card->dev->mtu = card->info.initial_mtu;
2983 card->dev->min_mtu = 64;
2984 card->dev->max_mtu = ETH_MAX_MTU;
2985 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2986 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2987 NETIF_F_HW_VLAN_CTAG_RX |
2988 NETIF_F_HW_VLAN_CTAG_FILTER;
2989 netif_keep_dst(card->dev);
2990 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
2991 PAGE_SIZE;
2992
2993 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2994 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2995 netif_carrier_off(card->dev);
2996 return register_netdev(card->dev);
2997}
2998
2999static const struct device_type qeth_l3_devtype = {
3000 .name = "qeth_layer3",
3001 .groups = qeth_l3_attr_groups,
3002};
3003
3004static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3005{
3006 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3007 int rc;
3008
3009 if (gdev->dev.type == &qeth_generic_devtype) {
3010 rc = qeth_l3_create_device_attributes(&gdev->dev);
3011 if (rc)
3012 return rc;
3013 }
3014 hash_init(card->ip_htable);
3015 hash_init(card->ip_mc_htable);
3016 card->options.layer2 = 0;
3017 card->info.hwtrap = 0;
3018 return 0;
3019}
3020
3021static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3022{
3023 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3024
3025 if (cgdev->dev.type == &qeth_generic_devtype)
3026 qeth_l3_remove_device_attributes(&cgdev->dev);
3027
3028 qeth_set_allowed_threads(card, 0, 1);
3029 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3030
3031 if (cgdev->state == CCWGROUP_ONLINE)
3032 qeth_l3_set_offline(cgdev);
3033
3034 if (card->dev) {
3035 netif_napi_del(&card->napi);
3036 unregister_netdev(card->dev);
3037 card->dev = NULL;
3038 }
3039
3040 qeth_l3_clear_ip_htable(card, 0);
3041 qeth_l3_clear_ipato_list(card);
3042 return;
3043}
3044
3045static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3046{
3047 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3048 int rc = 0;
3049 enum qeth_card_states recover_flag;
3050
3051 mutex_lock(&card->discipline_mutex);
3052 mutex_lock(&card->conf_mutex);
3053 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3054 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3055
3056 recover_flag = card->state;
3057 rc = qeth_core_hardsetup_card(card);
3058 if (rc) {
3059 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3060 rc = -ENODEV;
3061 goto out_remove;
3062 }
3063
3064 if (!card->dev && qeth_l3_setup_netdev(card)) {
3065 rc = -ENODEV;
3066 goto out_remove;
3067 }
3068
3069 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3070 if (card->info.hwtrap &&
3071 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3072 card->info.hwtrap = 0;
3073 } else
3074 card->info.hwtrap = 0;
3075
3076 card->state = CARD_STATE_HARDSETUP;
3077 memset(&card->rx, 0, sizeof(struct qeth_rx));
3078 qeth_print_status_message(card);
3079
3080
3081 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3082
3083 rc = qeth_l3_setadapter_parms(card);
3084 if (rc)
3085 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3086 if (!card->options.sniffer) {
3087 rc = qeth_l3_start_ipassists(card);
3088 if (rc) {
3089 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3090 goto out_remove;
3091 }
3092 rc = qeth_l3_setrouting_v4(card);
3093 if (rc)
3094 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3095 rc = qeth_l3_setrouting_v6(card);
3096 if (rc)
3097 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3098 }
3099 netif_tx_disable(card->dev);
3100
3101 rc = qeth_init_qdio_queues(card);
3102 if (rc) {
3103 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3104 rc = -ENODEV;
3105 goto out_remove;
3106 }
3107 card->state = CARD_STATE_SOFTSETUP;
3108
3109 qeth_set_allowed_threads(card, 0xffffffff, 0);
3110 qeth_l3_recover_ip(card);
3111 if (card->lan_online)
3112 netif_carrier_on(card->dev);
3113 else
3114 netif_carrier_off(card->dev);
3115 if (recover_flag == CARD_STATE_RECOVER) {
3116 rtnl_lock();
3117 if (recovery_mode)
3118 __qeth_l3_open(card->dev);
3119 else
3120 dev_open(card->dev);
3121 qeth_l3_set_multicast_list(card->dev);
3122 qeth_recover_features(card->dev);
3123 rtnl_unlock();
3124 }
3125 qeth_trace_features(card);
3126
3127 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3128 mutex_unlock(&card->conf_mutex);
3129 mutex_unlock(&card->discipline_mutex);
3130 return 0;
3131out_remove:
3132 qeth_l3_stop_card(card, 0);
3133 ccw_device_set_offline(CARD_DDEV(card));
3134 ccw_device_set_offline(CARD_WDEV(card));
3135 ccw_device_set_offline(CARD_RDEV(card));
3136 qdio_free(CARD_DDEV(card));
3137 if (recover_flag == CARD_STATE_RECOVER)
3138 card->state = CARD_STATE_RECOVER;
3139 else
3140 card->state = CARD_STATE_DOWN;
3141 mutex_unlock(&card->conf_mutex);
3142 mutex_unlock(&card->discipline_mutex);
3143 return rc;
3144}
3145
3146static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3147{
3148 return __qeth_l3_set_online(gdev, 0);
3149}
3150
3151static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3152 int recovery_mode)
3153{
3154 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3155 int rc = 0, rc2 = 0, rc3 = 0;
3156 enum qeth_card_states recover_flag;
3157
3158 mutex_lock(&card->discipline_mutex);
3159 mutex_lock(&card->conf_mutex);
3160 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3161 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3162
3163 if (card->dev && netif_carrier_ok(card->dev))
3164 netif_carrier_off(card->dev);
3165 recover_flag = card->state;
3166 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3167 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3168 card->info.hwtrap = 1;
3169 }
3170 qeth_l3_stop_card(card, recovery_mode);
3171 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3172 rtnl_lock();
3173 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3174 rtnl_unlock();
3175 }
3176 rc = ccw_device_set_offline(CARD_DDEV(card));
3177 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3178 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3179 if (!rc)
3180 rc = (rc2) ? rc2 : rc3;
3181 if (rc)
3182 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3183 qdio_free(CARD_DDEV(card));
3184 if (recover_flag == CARD_STATE_UP)
3185 card->state = CARD_STATE_RECOVER;
3186
3187 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3188 mutex_unlock(&card->conf_mutex);
3189 mutex_unlock(&card->discipline_mutex);
3190 return 0;
3191}
3192
3193static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3194{
3195 return __qeth_l3_set_offline(cgdev, 0);
3196}
3197
3198static int qeth_l3_recover(void *ptr)
3199{
3200 struct qeth_card *card;
3201 int rc = 0;
3202
3203 card = (struct qeth_card *) ptr;
3204 QETH_CARD_TEXT(card, 2, "recover1");
3205 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3206 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3207 return 0;
3208 QETH_CARD_TEXT(card, 2, "recover2");
3209 dev_warn(&card->gdev->dev,
3210 "A recovery process has been started for the device\n");
3211 qeth_set_recovery_task(card);
3212 __qeth_l3_set_offline(card->gdev, 1);
3213 rc = __qeth_l3_set_online(card->gdev, 1);
3214 if (!rc)
3215 dev_info(&card->gdev->dev,
3216 "Device successfully recovered!\n");
3217 else {
3218 qeth_close_dev(card);
3219 dev_warn(&card->gdev->dev, "The qeth device driver "
3220 "failed to recover an error on the device\n");
3221 }
3222 qeth_clear_recovery_task(card);
3223 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3224 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3225 return 0;
3226}
3227
3228static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3229{
3230 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3231
3232 if (card->dev)
3233 netif_device_detach(card->dev);
3234 qeth_set_allowed_threads(card, 0, 1);
3235 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3236 if (gdev->state == CCWGROUP_OFFLINE)
3237 return 0;
3238 if (card->state == CARD_STATE_UP) {
3239 if (card->info.hwtrap)
3240 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3241 __qeth_l3_set_offline(card->gdev, 1);
3242 } else
3243 __qeth_l3_set_offline(card->gdev, 0);
3244 return 0;
3245}
3246
3247static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3248{
3249 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3250 int rc = 0;
3251
3252 if (gdev->state == CCWGROUP_OFFLINE)
3253 goto out;
3254
3255 if (card->state == CARD_STATE_RECOVER) {
3256 rc = __qeth_l3_set_online(card->gdev, 1);
3257 if (rc) {
3258 rtnl_lock();
3259 dev_close(card->dev);
3260 rtnl_unlock();
3261 }
3262 } else
3263 rc = __qeth_l3_set_online(card->gdev, 0);
3264out:
3265 qeth_set_allowed_threads(card, 0xffffffff, 0);
3266 if (card->dev)
3267 netif_device_attach(card->dev);
3268 if (rc)
3269 dev_warn(&card->gdev->dev, "The qeth device driver "
3270 "failed to recover an error on the device\n");
3271 return rc;
3272}
3273
3274
3275static int qeth_l3_control_event(struct qeth_card *card,
3276 struct qeth_ipa_cmd *cmd)
3277{
3278 return 1;
3279}
3280
3281struct qeth_discipline qeth_l3_discipline = {
3282 .devtype = &qeth_l3_devtype,
3283 .start_poll = qeth_qdio_start_poll,
3284 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3285 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3286 .process_rx_buffer = qeth_l3_process_inbound_buffer,
3287 .recover = qeth_l3_recover,
3288 .setup = qeth_l3_probe_device,
3289 .remove = qeth_l3_remove_device,
3290 .set_online = qeth_l3_set_online,
3291 .set_offline = qeth_l3_set_offline,
3292 .freeze = qeth_l3_pm_suspend,
3293 .thaw = qeth_l3_pm_resume,
3294 .restore = qeth_l3_pm_resume,
3295 .do_ioctl = qeth_l3_do_ioctl,
3296 .control_event_handler = qeth_l3_control_event,
3297};
3298EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3299
3300static int qeth_l3_ip_event(struct notifier_block *this,
3301 unsigned long event, void *ptr)
3302{
3303
3304 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3305 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3306 struct qeth_ipaddr *addr;
3307 struct qeth_card *card;
3308
3309 if (dev_net(dev) != &init_net)
3310 return NOTIFY_DONE;
3311
3312 card = qeth_l3_get_card_from_dev(dev);
3313 if (!card)
3314 return NOTIFY_DONE;
3315 QETH_CARD_TEXT(card, 3, "ipevent");
3316
3317 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3318 if (addr) {
3319 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
3320 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
3321 addr->type = QETH_IP_TYPE_NORMAL;
3322 } else
3323 return NOTIFY_DONE;
3324
3325 switch (event) {
3326 case NETDEV_UP:
3327 spin_lock_bh(&card->ip_lock);
3328 qeth_l3_add_ip(card, addr);
3329 spin_unlock_bh(&card->ip_lock);
3330 break;
3331 case NETDEV_DOWN:
3332 spin_lock_bh(&card->ip_lock);
3333 qeth_l3_delete_ip(card, addr);
3334 spin_unlock_bh(&card->ip_lock);
3335 break;
3336 }
3337
3338 kfree(addr);
3339 return NOTIFY_DONE;
3340}
3341
3342static struct notifier_block qeth_l3_ip_notifier = {
3343 qeth_l3_ip_event,
3344 NULL,
3345};
3346
3347#ifdef CONFIG_QETH_IPV6
3348
3349
3350
3351static int qeth_l3_ip6_event(struct notifier_block *this,
3352 unsigned long event, void *ptr)
3353{
3354 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3355 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3356 struct qeth_ipaddr *addr;
3357 struct qeth_card *card;
3358
3359 card = qeth_l3_get_card_from_dev(dev);
3360 if (!card)
3361 return NOTIFY_DONE;
3362 QETH_CARD_TEXT(card, 3, "ip6event");
3363 if (!qeth_is_supported(card, IPA_IPV6))
3364 return NOTIFY_DONE;
3365
3366 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3367 if (addr) {
3368 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3369 addr->u.a6.pfxlen = ifa->prefix_len;
3370 addr->type = QETH_IP_TYPE_NORMAL;
3371 } else
3372 return NOTIFY_DONE;
3373
3374 switch (event) {
3375 case NETDEV_UP:
3376 spin_lock_bh(&card->ip_lock);
3377 qeth_l3_add_ip(card, addr);
3378 spin_unlock_bh(&card->ip_lock);
3379 break;
3380 case NETDEV_DOWN:
3381 spin_lock_bh(&card->ip_lock);
3382 qeth_l3_delete_ip(card, addr);
3383 spin_unlock_bh(&card->ip_lock);
3384 break;
3385 }
3386
3387 kfree(addr);
3388 return NOTIFY_DONE;
3389}
3390
3391static struct notifier_block qeth_l3_ip6_notifier = {
3392 qeth_l3_ip6_event,
3393 NULL,
3394};
3395#endif
3396
3397static int qeth_l3_register_notifiers(void)
3398{
3399 int rc;
3400
3401 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3402 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3403 if (rc)
3404 return rc;
3405#ifdef CONFIG_QETH_IPV6
3406 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3407 if (rc) {
3408 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3409 return rc;
3410 }
3411#else
3412 pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3413#endif
3414 return 0;
3415}
3416
3417static void qeth_l3_unregister_notifiers(void)
3418{
3419
3420 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3421 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3422#ifdef CONFIG_QETH_IPV6
3423 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3424#endif
3425}
3426
3427static int __init qeth_l3_init(void)
3428{
3429 int rc = 0;
3430
3431 pr_info("register layer 3 discipline\n");
3432 rc = qeth_l3_register_notifiers();
3433 return rc;
3434}
3435
3436static void __exit qeth_l3_exit(void)
3437{
3438 qeth_l3_unregister_notifiers();
3439 pr_info("unregister layer 3 discipline\n");
3440}
3441
3442module_init(qeth_l3_init);
3443module_exit(qeth_l3_exit);
3444MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3445MODULE_DESCRIPTION("qeth layer 3 discipline");
3446MODULE_LICENSE("GPL");
3447
