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[mirror_ubuntu-artful-kernel.git] / drivers / s390 / net / qeth_l3_main.c
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
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
37 static int qeth_l3_set_offline(struct ccwgroup_device *);
38 static int qeth_l3_stop(struct net_device *);
39 static void qeth_l3_set_multicast_list(struct net_device *);
40 static int qeth_l3_register_addr_entry(struct qeth_card *,
41 struct qeth_ipaddr *);
42 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
43 struct qeth_ipaddr *);
44
45 static int qeth_l3_isxdigit(char *buf)
46 {
47 while (*buf) {
48 if (!isxdigit(*buf++))
49 return 0;
50 }
51 return 1;
52 }
53
54 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
55 {
56 sprintf(buf, "%pI4", addr);
57 }
58
59 static 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
77 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
78 {
79 sprintf(buf, "%pI6", addr);
80 }
81
82 static 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
132 void 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
141 int 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
152 static 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
166 int 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 /* invert? */
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
203 inline int
204 qeth_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
211 static struct qeth_ipaddr *
212 qeth_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
231 int 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->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
251 return rc;
252 if (addr->in_progress)
253 return -EINPROGRESS;
254
255 if (!qeth_card_hw_is_reachable(card)) {
256 addr->disp_flag = QETH_DISP_ADDR_DELETE;
257 return 0;
258 }
259
260 rc = qeth_l3_deregister_addr_entry(card, addr);
261
262 hash_del(&addr->hnode);
263 kfree(addr);
264
265 return rc;
266 }
267
268 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
269 {
270 int rc = 0;
271 struct qeth_ipaddr *addr;
272
273 QETH_CARD_TEXT(card, 4, "addip");
274
275 if (tmp_addr->proto == QETH_PROT_IPV4)
276 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
277 else {
278 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
279 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
280 }
281
282 addr = qeth_l3_ip_from_hash(card, tmp_addr);
283 if (!addr) {
284 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
285 if (!addr)
286 return -ENOMEM;
287
288 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
289 addr->ref_counter = 1;
290
291 if (addr->type == QETH_IP_TYPE_NORMAL &&
292 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
293 QETH_CARD_TEXT(card, 2, "tkovaddr");
294 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
295 }
296 hash_add(card->ip_htable, &addr->hnode,
297 qeth_l3_ipaddr_hash(addr));
298
299 if (!qeth_card_hw_is_reachable(card)) {
300 addr->disp_flag = QETH_DISP_ADDR_ADD;
301 return 0;
302 }
303
304 /* qeth_l3_register_addr_entry can go to sleep
305 * if we add a IPV4 addr. It is caused by the reason
306 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
307 * Thus we should unlock spinlock, and make a protection
308 * using in_progress variable to indicate that there is
309 * an hardware operation with this IPV4 address
310 */
311 if (addr->proto == QETH_PROT_IPV4) {
312 addr->in_progress = 1;
313 spin_unlock_bh(&card->ip_lock);
314 rc = qeth_l3_register_addr_entry(card, addr);
315 spin_lock_bh(&card->ip_lock);
316 addr->in_progress = 0;
317 } else
318 rc = qeth_l3_register_addr_entry(card, addr);
319
320 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
321 (rc == IPA_RC_LAN_OFFLINE)) {
322 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
323 if (addr->ref_counter < 1) {
324 qeth_l3_delete_ip(card, addr);
325 kfree(addr);
326 }
327 } else {
328 hash_del(&addr->hnode);
329 kfree(addr);
330 }
331 } else {
332 if (addr->type == QETH_IP_TYPE_NORMAL)
333 addr->ref_counter++;
334 }
335
336 return rc;
337 }
338
339
340 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
341 enum qeth_prot_versions prot)
342 {
343 struct qeth_ipaddr *addr;
344
345 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
346 if (!addr)
347 return NULL;
348
349 addr->type = QETH_IP_TYPE_NORMAL;
350 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
351 addr->proto = prot;
352
353 return addr;
354 }
355
356 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
357 {
358 struct qeth_ipaddr *addr;
359 struct hlist_node *tmp;
360 int i;
361
362 QETH_CARD_TEXT(card, 4, "clearip");
363
364 if (recover && card->options.sniffer)
365 return;
366
367 spin_lock_bh(&card->ip_lock);
368
369 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
370 if (!recover) {
371 hash_del(&addr->hnode);
372 kfree(addr);
373 continue;
374 }
375 addr->disp_flag = QETH_DISP_ADDR_ADD;
376 }
377
378 spin_unlock_bh(&card->ip_lock);
379
380 spin_lock_bh(&card->mclock);
381
382 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
383 hash_del(&addr->hnode);
384 kfree(addr);
385 }
386
387 spin_unlock_bh(&card->mclock);
388
389
390 }
391 static void qeth_l3_recover_ip(struct qeth_card *card)
392 {
393 struct qeth_ipaddr *addr;
394 struct hlist_node *tmp;
395 int i;
396 int rc;
397
398 QETH_CARD_TEXT(card, 4, "recovrip");
399
400 spin_lock_bh(&card->ip_lock);
401
402 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
403 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
404 qeth_l3_deregister_addr_entry(card, addr);
405 hash_del(&addr->hnode);
406 kfree(addr);
407 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
408 if (addr->proto == QETH_PROT_IPV4) {
409 addr->in_progress = 1;
410 spin_unlock_bh(&card->ip_lock);
411 rc = qeth_l3_register_addr_entry(card, addr);
412 spin_lock_bh(&card->ip_lock);
413 addr->in_progress = 0;
414 } else
415 rc = qeth_l3_register_addr_entry(card, addr);
416
417 if (!rc) {
418 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
419 if (addr->ref_counter < 1)
420 qeth_l3_delete_ip(card, addr);
421 } else {
422 hash_del(&addr->hnode);
423 kfree(addr);
424 }
425 }
426 }
427
428 spin_unlock_bh(&card->ip_lock);
429
430 }
431
432 static int qeth_l3_send_setdelmc(struct qeth_card *card,
433 struct qeth_ipaddr *addr, int ipacmd)
434 {
435 int rc;
436 struct qeth_cmd_buffer *iob;
437 struct qeth_ipa_cmd *cmd;
438
439 QETH_CARD_TEXT(card, 4, "setdelmc");
440
441 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
442 if (!iob)
443 return -ENOMEM;
444 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
445 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
446 if (addr->proto == QETH_PROT_IPV6)
447 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
448 sizeof(struct in6_addr));
449 else
450 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
451
452 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
453
454 return rc;
455 }
456
457 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
458 {
459 int i, j;
460 for (i = 0; i < 16; i++) {
461 j = (len) - (i * 8);
462 if (j >= 8)
463 netmask[i] = 0xff;
464 else if (j > 0)
465 netmask[i] = (u8)(0xFF00 >> j);
466 else
467 netmask[i] = 0;
468 }
469 }
470
471 static int qeth_l3_send_setdelip(struct qeth_card *card,
472 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
473 {
474 int rc;
475 struct qeth_cmd_buffer *iob;
476 struct qeth_ipa_cmd *cmd;
477 __u8 netmask[16];
478
479 QETH_CARD_TEXT(card, 4, "setdelip");
480 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
481
482 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
483 if (!iob)
484 return -ENOMEM;
485 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
486 if (addr->proto == QETH_PROT_IPV6) {
487 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
488 sizeof(struct in6_addr));
489 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
490 memcpy(cmd->data.setdelip6.mask, netmask,
491 sizeof(struct in6_addr));
492 cmd->data.setdelip6.flags = flags;
493 } else {
494 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
495 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
496 cmd->data.setdelip4.flags = flags;
497 }
498
499 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
500
501 return rc;
502 }
503
504 static int qeth_l3_send_setrouting(struct qeth_card *card,
505 enum qeth_routing_types type, enum qeth_prot_versions prot)
506 {
507 int rc;
508 struct qeth_ipa_cmd *cmd;
509 struct qeth_cmd_buffer *iob;
510
511 QETH_CARD_TEXT(card, 4, "setroutg");
512 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
513 if (!iob)
514 return -ENOMEM;
515 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
516 cmd->data.setrtg.type = (type);
517 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
518
519 return rc;
520 }
521
522 static int qeth_l3_correct_routing_type(struct qeth_card *card,
523 enum qeth_routing_types *type, enum qeth_prot_versions prot)
524 {
525 if (card->info.type == QETH_CARD_TYPE_IQD) {
526 switch (*type) {
527 case NO_ROUTER:
528 case PRIMARY_CONNECTOR:
529 case SECONDARY_CONNECTOR:
530 case MULTICAST_ROUTER:
531 return 0;
532 default:
533 goto out_inval;
534 }
535 } else {
536 switch (*type) {
537 case NO_ROUTER:
538 case PRIMARY_ROUTER:
539 case SECONDARY_ROUTER:
540 return 0;
541 case MULTICAST_ROUTER:
542 if (qeth_is_ipafunc_supported(card, prot,
543 IPA_OSA_MC_ROUTER))
544 return 0;
545 default:
546 goto out_inval;
547 }
548 }
549 out_inval:
550 *type = NO_ROUTER;
551 return -EINVAL;
552 }
553
554 int qeth_l3_setrouting_v4(struct qeth_card *card)
555 {
556 int rc;
557
558 QETH_CARD_TEXT(card, 3, "setrtg4");
559
560 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
561 QETH_PROT_IPV4);
562 if (rc)
563 return rc;
564
565 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
566 QETH_PROT_IPV4);
567 if (rc) {
568 card->options.route4.type = NO_ROUTER;
569 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
570 " on %s. Type set to 'no router'.\n", rc,
571 QETH_CARD_IFNAME(card));
572 }
573 return rc;
574 }
575
576 int qeth_l3_setrouting_v6(struct qeth_card *card)
577 {
578 int rc = 0;
579
580 QETH_CARD_TEXT(card, 3, "setrtg6");
581 #ifdef CONFIG_QETH_IPV6
582
583 if (!qeth_is_supported(card, IPA_IPV6))
584 return 0;
585 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
586 QETH_PROT_IPV6);
587 if (rc)
588 return rc;
589
590 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
591 QETH_PROT_IPV6);
592 if (rc) {
593 card->options.route6.type = NO_ROUTER;
594 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
595 " on %s. Type set to 'no router'.\n", rc,
596 QETH_CARD_IFNAME(card));
597 }
598 #endif
599 return rc;
600 }
601
602 /*
603 * IP address takeover related functions
604 */
605 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
606 {
607 struct qeth_ipato_entry *ipatoe, *tmp;
608
609 spin_lock_bh(&card->ip_lock);
610
611 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
612 list_del(&ipatoe->entry);
613 kfree(ipatoe);
614 }
615
616 spin_unlock_bh(&card->ip_lock);
617 }
618
619 int qeth_l3_add_ipato_entry(struct qeth_card *card,
620 struct qeth_ipato_entry *new)
621 {
622 struct qeth_ipato_entry *ipatoe;
623 int rc = 0;
624
625 QETH_CARD_TEXT(card, 2, "addipato");
626
627 spin_lock_bh(&card->ip_lock);
628
629 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
630 if (ipatoe->proto != new->proto)
631 continue;
632 if (!memcmp(ipatoe->addr, new->addr,
633 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
634 (ipatoe->mask_bits == new->mask_bits)) {
635 rc = -EEXIST;
636 break;
637 }
638 }
639
640 if (!rc)
641 list_add_tail(&new->entry, &card->ipato.entries);
642
643 spin_unlock_bh(&card->ip_lock);
644
645 return rc;
646 }
647
648 void qeth_l3_del_ipato_entry(struct qeth_card *card,
649 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
650 {
651 struct qeth_ipato_entry *ipatoe, *tmp;
652
653 QETH_CARD_TEXT(card, 2, "delipato");
654
655 spin_lock_bh(&card->ip_lock);
656
657 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
658 if (ipatoe->proto != proto)
659 continue;
660 if (!memcmp(ipatoe->addr, addr,
661 (proto == QETH_PROT_IPV4)? 4:16) &&
662 (ipatoe->mask_bits == mask_bits)) {
663 list_del(&ipatoe->entry);
664 kfree(ipatoe);
665 }
666 }
667
668 spin_unlock_bh(&card->ip_lock);
669 }
670
671 /*
672 * VIPA related functions
673 */
674 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
675 const u8 *addr)
676 {
677 struct qeth_ipaddr *ipaddr;
678 int rc = 0;
679
680 ipaddr = qeth_l3_get_addr_buffer(proto);
681 if (ipaddr) {
682 if (proto == QETH_PROT_IPV4) {
683 QETH_CARD_TEXT(card, 2, "addvipa4");
684 memcpy(&ipaddr->u.a4.addr, addr, 4);
685 ipaddr->u.a4.mask = 0;
686 } else if (proto == QETH_PROT_IPV6) {
687 QETH_CARD_TEXT(card, 2, "addvipa6");
688 memcpy(&ipaddr->u.a6.addr, addr, 16);
689 ipaddr->u.a6.pfxlen = 0;
690 }
691 ipaddr->type = QETH_IP_TYPE_VIPA;
692 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
693 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
694 } else
695 return -ENOMEM;
696
697 spin_lock_bh(&card->ip_lock);
698
699 if (qeth_l3_ip_from_hash(card, ipaddr))
700 rc = -EEXIST;
701 else
702 qeth_l3_add_ip(card, ipaddr);
703
704 spin_unlock_bh(&card->ip_lock);
705
706 kfree(ipaddr);
707
708 return rc;
709 }
710
711 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
712 const u8 *addr)
713 {
714 struct qeth_ipaddr *ipaddr;
715
716 ipaddr = qeth_l3_get_addr_buffer(proto);
717 if (ipaddr) {
718 if (proto == QETH_PROT_IPV4) {
719 QETH_CARD_TEXT(card, 2, "delvipa4");
720 memcpy(&ipaddr->u.a4.addr, addr, 4);
721 ipaddr->u.a4.mask = 0;
722 } else if (proto == QETH_PROT_IPV6) {
723 QETH_CARD_TEXT(card, 2, "delvipa6");
724 memcpy(&ipaddr->u.a6.addr, addr, 16);
725 ipaddr->u.a6.pfxlen = 0;
726 }
727 ipaddr->type = QETH_IP_TYPE_VIPA;
728 } else
729 return;
730
731 spin_lock_bh(&card->ip_lock);
732 qeth_l3_delete_ip(card, ipaddr);
733 spin_unlock_bh(&card->ip_lock);
734
735 kfree(ipaddr);
736 }
737
738 /*
739 * proxy ARP related functions
740 */
741 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
742 const u8 *addr)
743 {
744 struct qeth_ipaddr *ipaddr;
745 int rc = 0;
746
747 ipaddr = qeth_l3_get_addr_buffer(proto);
748 if (ipaddr) {
749 if (proto == QETH_PROT_IPV4) {
750 QETH_CARD_TEXT(card, 2, "addrxip4");
751 memcpy(&ipaddr->u.a4.addr, addr, 4);
752 ipaddr->u.a4.mask = 0;
753 } else if (proto == QETH_PROT_IPV6) {
754 QETH_CARD_TEXT(card, 2, "addrxip6");
755 memcpy(&ipaddr->u.a6.addr, addr, 16);
756 ipaddr->u.a6.pfxlen = 0;
757 }
758
759 ipaddr->type = QETH_IP_TYPE_RXIP;
760 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
761 ipaddr->del_flags = 0;
762 } else
763 return -ENOMEM;
764
765 spin_lock_bh(&card->ip_lock);
766
767 if (qeth_l3_ip_from_hash(card, ipaddr))
768 rc = -EEXIST;
769 else
770 qeth_l3_add_ip(card, ipaddr);
771
772 spin_unlock_bh(&card->ip_lock);
773
774 kfree(ipaddr);
775
776 return rc;
777 }
778
779 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
780 const u8 *addr)
781 {
782 struct qeth_ipaddr *ipaddr;
783
784 ipaddr = qeth_l3_get_addr_buffer(proto);
785 if (ipaddr) {
786 if (proto == QETH_PROT_IPV4) {
787 QETH_CARD_TEXT(card, 2, "addrxip4");
788 memcpy(&ipaddr->u.a4.addr, addr, 4);
789 ipaddr->u.a4.mask = 0;
790 } else if (proto == QETH_PROT_IPV6) {
791 QETH_CARD_TEXT(card, 2, "addrxip6");
792 memcpy(&ipaddr->u.a6.addr, addr, 16);
793 ipaddr->u.a6.pfxlen = 0;
794 }
795 ipaddr->type = QETH_IP_TYPE_RXIP;
796 } else
797 return;
798
799 spin_lock_bh(&card->ip_lock);
800 qeth_l3_delete_ip(card, ipaddr);
801 spin_unlock_bh(&card->ip_lock);
802
803 kfree(ipaddr);
804 }
805
806 static int qeth_l3_register_addr_entry(struct qeth_card *card,
807 struct qeth_ipaddr *addr)
808 {
809 char buf[50];
810 int rc = 0;
811 int cnt = 3;
812
813
814 if (addr->proto == QETH_PROT_IPV4) {
815 QETH_CARD_TEXT(card, 2, "setaddr4");
816 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
817 } else if (addr->proto == QETH_PROT_IPV6) {
818 QETH_CARD_TEXT(card, 2, "setaddr6");
819 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
820 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
821 } else {
822 QETH_CARD_TEXT(card, 2, "setaddr?");
823 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
824 }
825 do {
826 if (addr->is_multicast)
827 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
828 else
829 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
830 addr->set_flags);
831 if (rc)
832 QETH_CARD_TEXT(card, 2, "failed");
833 } while ((--cnt > 0) && rc);
834 if (rc) {
835 QETH_CARD_TEXT(card, 2, "FAILED");
836 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
837 dev_warn(&card->gdev->dev,
838 "Registering IP address %s failed\n", buf);
839 }
840 return rc;
841 }
842
843 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
844 struct qeth_ipaddr *addr)
845 {
846 int rc = 0;
847
848 if (addr->proto == QETH_PROT_IPV4) {
849 QETH_CARD_TEXT(card, 2, "deladdr4");
850 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
851 } else if (addr->proto == QETH_PROT_IPV6) {
852 QETH_CARD_TEXT(card, 2, "deladdr6");
853 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
854 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
855 } else {
856 QETH_CARD_TEXT(card, 2, "deladdr?");
857 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
858 }
859 if (addr->is_multicast)
860 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
861 else
862 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
863 addr->del_flags);
864 if (rc)
865 QETH_CARD_TEXT(card, 2, "failed");
866
867 return rc;
868 }
869
870 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
871 {
872 if (cast_type == RTN_MULTICAST)
873 return QETH_CAST_MULTICAST;
874 if (cast_type == RTN_BROADCAST)
875 return QETH_CAST_BROADCAST;
876 return QETH_CAST_UNICAST;
877 }
878
879 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
880 {
881 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
882 if (cast_type == RTN_MULTICAST)
883 return ct | QETH_CAST_MULTICAST;
884 if (cast_type == RTN_ANYCAST)
885 return ct | QETH_CAST_ANYCAST;
886 if (cast_type == RTN_BROADCAST)
887 return ct | QETH_CAST_BROADCAST;
888 return ct | QETH_CAST_UNICAST;
889 }
890
891 static int qeth_l3_setadapter_parms(struct qeth_card *card)
892 {
893 int rc;
894
895 QETH_DBF_TEXT(SETUP, 2, "setadprm");
896
897 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
898 dev_info(&card->gdev->dev,
899 "set adapter parameters not supported.\n");
900 QETH_DBF_TEXT(SETUP, 2, " notsupp");
901 return 0;
902 }
903 rc = qeth_query_setadapterparms(card);
904 if (rc) {
905 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
906 "0x%x\n", dev_name(&card->gdev->dev), rc);
907 return rc;
908 }
909 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
910 rc = qeth_setadpparms_change_macaddr(card);
911 if (rc)
912 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
913 " address failed\n");
914 }
915
916 return rc;
917 }
918
919 #ifdef CONFIG_QETH_IPV6
920 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
921 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
922 {
923 int rc;
924 struct qeth_cmd_buffer *iob;
925
926 QETH_CARD_TEXT(card, 4, "simassp6");
927 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
928 0, QETH_PROT_IPV6);
929 if (!iob)
930 return -ENOMEM;
931 rc = qeth_send_setassparms(card, iob, 0, 0,
932 qeth_setassparms_cb, NULL);
933 return rc;
934 }
935 #endif
936
937 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
938 {
939 int rc;
940
941 QETH_CARD_TEXT(card, 3, "ipaarp");
942
943 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
944 dev_info(&card->gdev->dev,
945 "ARP processing not supported on %s!\n",
946 QETH_CARD_IFNAME(card));
947 return 0;
948 }
949 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
950 IPA_CMD_ASS_START, 0);
951 if (rc) {
952 dev_warn(&card->gdev->dev,
953 "Starting ARP processing support for %s failed\n",
954 QETH_CARD_IFNAME(card));
955 }
956 return rc;
957 }
958
959 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
960 {
961 int rc;
962
963 QETH_CARD_TEXT(card, 3, "stsrcmac");
964
965 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
966 dev_info(&card->gdev->dev,
967 "Inbound source MAC-address not supported on %s\n",
968 QETH_CARD_IFNAME(card));
969 return -EOPNOTSUPP;
970 }
971
972 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
973 IPA_CMD_ASS_START, 0);
974 if (rc)
975 dev_warn(&card->gdev->dev,
976 "Starting source MAC-address support for %s failed\n",
977 QETH_CARD_IFNAME(card));
978 return rc;
979 }
980
981 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
982 {
983 int rc = 0;
984
985 QETH_CARD_TEXT(card, 3, "strtvlan");
986
987 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
988 dev_info(&card->gdev->dev,
989 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
990 return -EOPNOTSUPP;
991 }
992
993 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
994 IPA_CMD_ASS_START, 0);
995 if (rc) {
996 dev_warn(&card->gdev->dev,
997 "Starting VLAN support for %s failed\n",
998 QETH_CARD_IFNAME(card));
999 } else {
1000 dev_info(&card->gdev->dev, "VLAN enabled\n");
1001 }
1002 return rc;
1003 }
1004
1005 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1006 {
1007 int rc;
1008
1009 QETH_CARD_TEXT(card, 3, "stmcast");
1010
1011 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1012 dev_info(&card->gdev->dev,
1013 "Multicast not supported on %s\n",
1014 QETH_CARD_IFNAME(card));
1015 return -EOPNOTSUPP;
1016 }
1017
1018 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1019 IPA_CMD_ASS_START, 0);
1020 if (rc) {
1021 dev_warn(&card->gdev->dev,
1022 "Starting multicast support for %s failed\n",
1023 QETH_CARD_IFNAME(card));
1024 } else {
1025 dev_info(&card->gdev->dev, "Multicast enabled\n");
1026 card->dev->flags |= IFF_MULTICAST;
1027 }
1028 return rc;
1029 }
1030
1031 #ifdef CONFIG_QETH_IPV6
1032 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1033 {
1034 int rc;
1035
1036 QETH_CARD_TEXT(card, 3, "softipv6");
1037
1038 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1039 if (rc) {
1040 dev_err(&card->gdev->dev,
1041 "Activating IPv6 support for %s failed\n",
1042 QETH_CARD_IFNAME(card));
1043 return rc;
1044 }
1045
1046 if (card->info.type == QETH_CARD_TYPE_IQD)
1047 goto out;
1048
1049 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1050 IPA_CMD_ASS_START, 3);
1051 if (rc) {
1052 dev_err(&card->gdev->dev,
1053 "Activating IPv6 support for %s failed\n",
1054 QETH_CARD_IFNAME(card));
1055 return rc;
1056 }
1057 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1058 IPA_CMD_ASS_START);
1059 if (rc) {
1060 dev_err(&card->gdev->dev,
1061 "Activating IPv6 support for %s failed\n",
1062 QETH_CARD_IFNAME(card));
1063 return rc;
1064 }
1065 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1066 IPA_CMD_ASS_START);
1067 if (rc) {
1068 dev_warn(&card->gdev->dev,
1069 "Enabling the passthrough mode for %s failed\n",
1070 QETH_CARD_IFNAME(card));
1071 return rc;
1072 }
1073 out:
1074 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1075 return 0;
1076 }
1077 #endif
1078
1079 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1080 {
1081 int rc = 0;
1082
1083 QETH_CARD_TEXT(card, 3, "strtipv6");
1084
1085 if (!qeth_is_supported(card, IPA_IPV6)) {
1086 dev_info(&card->gdev->dev,
1087 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1088 return 0;
1089 }
1090 #ifdef CONFIG_QETH_IPV6
1091 rc = qeth_l3_softsetup_ipv6(card);
1092 #endif
1093 return rc ;
1094 }
1095
1096 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1097 {
1098 int rc;
1099
1100 QETH_CARD_TEXT(card, 3, "stbrdcst");
1101 card->info.broadcast_capable = 0;
1102 if (!qeth_is_supported(card, IPA_FILTERING)) {
1103 dev_info(&card->gdev->dev,
1104 "Broadcast not supported on %s\n",
1105 QETH_CARD_IFNAME(card));
1106 rc = -EOPNOTSUPP;
1107 goto out;
1108 }
1109 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1110 IPA_CMD_ASS_START, 0);
1111 if (rc) {
1112 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1113 "%s failed\n", QETH_CARD_IFNAME(card));
1114 goto out;
1115 }
1116
1117 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1118 IPA_CMD_ASS_CONFIGURE, 1);
1119 if (rc) {
1120 dev_warn(&card->gdev->dev,
1121 "Setting up broadcast filtering for %s failed\n",
1122 QETH_CARD_IFNAME(card));
1123 goto out;
1124 }
1125 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1126 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1127 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1128 IPA_CMD_ASS_ENABLE, 1);
1129 if (rc) {
1130 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1131 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1132 goto out;
1133 }
1134 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1135 out:
1136 if (card->info.broadcast_capable)
1137 card->dev->flags |= IFF_BROADCAST;
1138 else
1139 card->dev->flags &= ~IFF_BROADCAST;
1140 return rc;
1141 }
1142
1143 static int qeth_l3_start_ipassists(struct qeth_card *card)
1144 {
1145 QETH_CARD_TEXT(card, 3, "strtipas");
1146
1147 if (qeth_set_access_ctrl_online(card, 0))
1148 return -EIO;
1149 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1150 qeth_l3_start_ipa_source_mac(card); /* go on*/
1151 qeth_l3_start_ipa_vlan(card); /* go on*/
1152 qeth_l3_start_ipa_multicast(card); /* go on*/
1153 qeth_l3_start_ipa_ipv6(card); /* go on*/
1154 qeth_l3_start_ipa_broadcast(card); /* go on*/
1155 return 0;
1156 }
1157
1158 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1159 struct qeth_reply *reply, unsigned long data)
1160 {
1161 struct qeth_ipa_cmd *cmd;
1162
1163 cmd = (struct qeth_ipa_cmd *) data;
1164 if (cmd->hdr.return_code == 0)
1165 memcpy(card->dev->dev_addr,
1166 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1167 else
1168 eth_random_addr(card->dev->dev_addr);
1169
1170 return 0;
1171 }
1172
1173 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1174 {
1175 int rc = 0;
1176 struct qeth_cmd_buffer *iob;
1177 struct qeth_ipa_cmd *cmd;
1178
1179 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1180
1181 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1182 QETH_PROT_IPV6);
1183 if (!iob)
1184 return -ENOMEM;
1185 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1186 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1187 card->info.unique_id;
1188
1189 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1190 NULL);
1191 return rc;
1192 }
1193
1194 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1195 struct qeth_reply *reply, unsigned long data)
1196 {
1197 struct qeth_ipa_cmd *cmd;
1198
1199 cmd = (struct qeth_ipa_cmd *) data;
1200 if (cmd->hdr.return_code == 0)
1201 card->info.unique_id = *((__u16 *)
1202 &cmd->data.create_destroy_addr.unique_id[6]);
1203 else {
1204 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1205 UNIQUE_ID_NOT_BY_CARD;
1206 dev_warn(&card->gdev->dev, "The network adapter failed to "
1207 "generate a unique ID\n");
1208 }
1209 return 0;
1210 }
1211
1212 static int qeth_l3_get_unique_id(struct qeth_card *card)
1213 {
1214 int rc = 0;
1215 struct qeth_cmd_buffer *iob;
1216 struct qeth_ipa_cmd *cmd;
1217
1218 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1219
1220 if (!qeth_is_supported(card, IPA_IPV6)) {
1221 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1222 UNIQUE_ID_NOT_BY_CARD;
1223 return 0;
1224 }
1225
1226 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1227 QETH_PROT_IPV6);
1228 if (!iob)
1229 return -ENOMEM;
1230 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1231 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1232 card->info.unique_id;
1233
1234 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1235 return rc;
1236 }
1237
1238 static int
1239 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1240 unsigned long data)
1241 {
1242 struct qeth_ipa_cmd *cmd;
1243 __u16 rc;
1244
1245 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1246
1247 cmd = (struct qeth_ipa_cmd *)data;
1248 rc = cmd->hdr.return_code;
1249 if (rc)
1250 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1251 switch (cmd->data.diagass.action) {
1252 case QETH_DIAGS_CMD_TRACE_QUERY:
1253 break;
1254 case QETH_DIAGS_CMD_TRACE_DISABLE:
1255 switch (rc) {
1256 case 0:
1257 case IPA_RC_INVALID_SUBCMD:
1258 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1259 dev_info(&card->gdev->dev, "The HiperSockets network "
1260 "traffic analyzer is deactivated\n");
1261 break;
1262 default:
1263 break;
1264 }
1265 break;
1266 case QETH_DIAGS_CMD_TRACE_ENABLE:
1267 switch (rc) {
1268 case 0:
1269 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1270 dev_info(&card->gdev->dev, "The HiperSockets network "
1271 "traffic analyzer is activated\n");
1272 break;
1273 case IPA_RC_HARDWARE_AUTH_ERROR:
1274 dev_warn(&card->gdev->dev, "The device is not "
1275 "authorized to run as a HiperSockets network "
1276 "traffic analyzer\n");
1277 break;
1278 case IPA_RC_TRACE_ALREADY_ACTIVE:
1279 dev_warn(&card->gdev->dev, "A HiperSockets "
1280 "network traffic analyzer is already "
1281 "active in the HiperSockets LAN\n");
1282 break;
1283 default:
1284 break;
1285 }
1286 break;
1287 default:
1288 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1289 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1290 }
1291
1292 return 0;
1293 }
1294
1295 static int
1296 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1297 {
1298 struct qeth_cmd_buffer *iob;
1299 struct qeth_ipa_cmd *cmd;
1300
1301 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1302
1303 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1304 if (!iob)
1305 return -ENOMEM;
1306 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1307 cmd->data.diagass.subcmd_len = 16;
1308 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1309 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1310 cmd->data.diagass.action = diags_cmd;
1311 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1312 }
1313
1314 static void qeth_l3_get_mac_for_ipm(__be32 ipm, char *mac)
1315 {
1316 ip_eth_mc_map(ipm, mac);
1317 }
1318
1319 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1320 {
1321 struct qeth_ipaddr *addr;
1322 int i;
1323
1324 hash_for_each(card->ip_mc_htable, i, addr, hnode)
1325 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1326
1327 }
1328
1329 static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1330 {
1331 struct qeth_ipaddr *addr;
1332 struct hlist_node *tmp;
1333 int i;
1334 int rc;
1335
1336 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1337 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1338 rc = qeth_l3_register_addr_entry(card, addr);
1339 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1340 addr->ref_counter = 1;
1341 else {
1342 hash_del(&addr->hnode);
1343 kfree(addr);
1344 }
1345 }
1346 }
1347
1348 }
1349
1350 static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1351 {
1352 struct qeth_ipaddr *addr;
1353 struct hlist_node *tmp;
1354 int i;
1355 int rc;
1356
1357 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1358 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1359 rc = qeth_l3_deregister_addr_entry(card, addr);
1360 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1361 hash_del(&addr->hnode);
1362 kfree(addr);
1363 }
1364 }
1365 }
1366
1367 }
1368
1369
1370 static void
1371 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1372 {
1373 struct ip_mc_list *im4;
1374 struct qeth_ipaddr *tmp, *ipm;
1375 char buf[MAX_ADDR_LEN];
1376
1377 QETH_CARD_TEXT(card, 4, "addmc");
1378
1379 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1380 if (!tmp)
1381 return;
1382
1383 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1384 im4 = rcu_dereference(im4->next_rcu)) {
1385 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1386
1387 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1388 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1389
1390 ipm = qeth_l3_ip_from_hash(card, tmp);
1391 if (ipm) {
1392 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1393 } else {
1394 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1395 if (!ipm)
1396 continue;
1397 memcpy(ipm->mac, buf, sizeof(tmp->mac));
1398 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1399 ipm->is_multicast = 1;
1400 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1401 hash_add(card->ip_mc_htable,
1402 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1403 }
1404 }
1405
1406 kfree(tmp);
1407 }
1408
1409 /* called with rcu_read_lock */
1410 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1411 {
1412 struct in_device *in_dev;
1413 u16 vid;
1414
1415 QETH_CARD_TEXT(card, 4, "addmcvl");
1416
1417 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1418 return;
1419
1420 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1421 struct net_device *netdev;
1422
1423 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1424 vid);
1425 if (netdev == NULL ||
1426 !(netdev->flags & IFF_UP))
1427 continue;
1428 in_dev = __in_dev_get_rcu(netdev);
1429 if (!in_dev)
1430 continue;
1431 qeth_l3_add_mc_to_hash(card, in_dev);
1432 }
1433 }
1434
1435 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1436 {
1437 struct in_device *in4_dev;
1438
1439 QETH_CARD_TEXT(card, 4, "chkmcv4");
1440
1441 rcu_read_lock();
1442 in4_dev = __in_dev_get_rcu(card->dev);
1443 if (in4_dev == NULL)
1444 goto unlock;
1445 qeth_l3_add_mc_to_hash(card, in4_dev);
1446 qeth_l3_add_vlan_mc(card);
1447 unlock:
1448 rcu_read_unlock();
1449 }
1450
1451 #ifdef CONFIG_QETH_IPV6
1452 static void
1453 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1454 {
1455 struct qeth_ipaddr *ipm;
1456 struct ifmcaddr6 *im6;
1457 struct qeth_ipaddr *tmp;
1458 char buf[MAX_ADDR_LEN];
1459
1460 QETH_CARD_TEXT(card, 4, "addmc6");
1461
1462 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1463 if (!tmp)
1464 return;
1465
1466 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1467 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1468
1469 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1470 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1471 sizeof(struct in6_addr));
1472 tmp->is_multicast = 1;
1473
1474 ipm = qeth_l3_ip_from_hash(card, tmp);
1475 if (ipm) {
1476 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1477 continue;
1478 }
1479
1480 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1481 if (!ipm)
1482 continue;
1483
1484 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1485 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1486 sizeof(struct in6_addr));
1487 ipm->is_multicast = 1;
1488 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1489 hash_add(card->ip_mc_htable,
1490 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1491
1492 }
1493 kfree(tmp);
1494 }
1495
1496 /* called with rcu_read_lock */
1497 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1498 {
1499 struct inet6_dev *in_dev;
1500 u16 vid;
1501
1502 QETH_CARD_TEXT(card, 4, "admc6vl");
1503
1504 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1505 return;
1506
1507 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1508 struct net_device *netdev;
1509
1510 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1511 vid);
1512 if (netdev == NULL ||
1513 !(netdev->flags & IFF_UP))
1514 continue;
1515 in_dev = in6_dev_get(netdev);
1516 if (!in_dev)
1517 continue;
1518 read_lock_bh(&in_dev->lock);
1519 qeth_l3_add_mc6_to_hash(card, in_dev);
1520 read_unlock_bh(&in_dev->lock);
1521 in6_dev_put(in_dev);
1522 }
1523 }
1524
1525 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1526 {
1527 struct inet6_dev *in6_dev;
1528
1529 QETH_CARD_TEXT(card, 4, "chkmcv6");
1530
1531 if (!qeth_is_supported(card, IPA_IPV6))
1532 return ;
1533 in6_dev = in6_dev_get(card->dev);
1534 if (!in6_dev)
1535 return;
1536
1537 rcu_read_lock();
1538 read_lock_bh(&in6_dev->lock);
1539 qeth_l3_add_mc6_to_hash(card, in6_dev);
1540 qeth_l3_add_vlan_mc6(card);
1541 read_unlock_bh(&in6_dev->lock);
1542 rcu_read_unlock();
1543 in6_dev_put(in6_dev);
1544 }
1545 #endif /* CONFIG_QETH_IPV6 */
1546
1547 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1548 unsigned short vid)
1549 {
1550 struct in_device *in_dev;
1551 struct in_ifaddr *ifa;
1552 struct qeth_ipaddr *addr;
1553 struct net_device *netdev;
1554
1555 QETH_CARD_TEXT(card, 4, "frvaddr4");
1556
1557 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1558 if (!netdev)
1559 return;
1560 in_dev = in_dev_get(netdev);
1561 if (!in_dev)
1562 return;
1563
1564 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1565 if (!addr)
1566 return;
1567
1568 spin_lock_bh(&card->ip_lock);
1569
1570 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1571 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
1572 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
1573 addr->type = QETH_IP_TYPE_NORMAL;
1574 qeth_l3_delete_ip(card, addr);
1575 }
1576
1577 spin_unlock_bh(&card->ip_lock);
1578
1579 kfree(addr);
1580 in_dev_put(in_dev);
1581 }
1582
1583 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1584 unsigned short vid)
1585 {
1586 #ifdef CONFIG_QETH_IPV6
1587 struct inet6_dev *in6_dev;
1588 struct inet6_ifaddr *ifa;
1589 struct qeth_ipaddr *addr;
1590 struct net_device *netdev;
1591
1592 QETH_CARD_TEXT(card, 4, "frvaddr6");
1593
1594 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1595 if (!netdev)
1596 return;
1597
1598 in6_dev = in6_dev_get(netdev);
1599 if (!in6_dev)
1600 return;
1601
1602 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1603 if (!addr)
1604 return;
1605
1606 spin_lock_bh(&card->ip_lock);
1607
1608 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1609 memcpy(&addr->u.a6.addr, &ifa->addr,
1610 sizeof(struct in6_addr));
1611 addr->u.a6.pfxlen = ifa->prefix_len;
1612 addr->type = QETH_IP_TYPE_NORMAL;
1613 qeth_l3_delete_ip(card, addr);
1614 }
1615
1616 spin_unlock_bh(&card->ip_lock);
1617
1618 kfree(addr);
1619 in6_dev_put(in6_dev);
1620 #endif /* CONFIG_QETH_IPV6 */
1621 }
1622
1623 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1624 unsigned short vid)
1625 {
1626 rcu_read_lock();
1627 qeth_l3_free_vlan_addresses4(card, vid);
1628 qeth_l3_free_vlan_addresses6(card, vid);
1629 rcu_read_unlock();
1630 }
1631
1632 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1633 __be16 proto, u16 vid)
1634 {
1635 struct qeth_card *card = dev->ml_priv;
1636
1637 set_bit(vid, card->active_vlans);
1638 return 0;
1639 }
1640
1641 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1642 __be16 proto, u16 vid)
1643 {
1644 struct qeth_card *card = dev->ml_priv;
1645
1646 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1647
1648 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1649 QETH_CARD_TEXT(card, 3, "kidREC");
1650 return 0;
1651 }
1652 /* unregister IP addresses of vlan device */
1653 qeth_l3_free_vlan_addresses(card, vid);
1654 clear_bit(vid, card->active_vlans);
1655 qeth_l3_set_multicast_list(card->dev);
1656 return 0;
1657 }
1658
1659 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1660 struct sk_buff *skb, struct qeth_hdr *hdr,
1661 unsigned short *vlan_id)
1662 {
1663 __u16 prot;
1664 struct iphdr *ip_hdr;
1665 unsigned char tg_addr[MAX_ADDR_LEN];
1666 int is_vlan = 0;
1667
1668 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1669 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1670 ETH_P_IP;
1671 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1672 case QETH_CAST_MULTICAST:
1673 switch (prot) {
1674 #ifdef CONFIG_QETH_IPV6
1675 case ETH_P_IPV6:
1676 ndisc_mc_map((struct in6_addr *)
1677 skb->data + 24,
1678 tg_addr, card->dev, 0);
1679 break;
1680 #endif
1681 case ETH_P_IP:
1682 ip_hdr = (struct iphdr *)skb->data;
1683 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1684 break;
1685 default:
1686 memcpy(tg_addr, card->dev->broadcast,
1687 card->dev->addr_len);
1688 }
1689 card->stats.multicast++;
1690 skb->pkt_type = PACKET_MULTICAST;
1691 break;
1692 case QETH_CAST_BROADCAST:
1693 memcpy(tg_addr, card->dev->broadcast,
1694 card->dev->addr_len);
1695 card->stats.multicast++;
1696 skb->pkt_type = PACKET_BROADCAST;
1697 break;
1698 case QETH_CAST_UNICAST:
1699 case QETH_CAST_ANYCAST:
1700 case QETH_CAST_NOCAST:
1701 default:
1702 if (card->options.sniffer)
1703 skb->pkt_type = PACKET_OTHERHOST;
1704 else
1705 skb->pkt_type = PACKET_HOST;
1706 memcpy(tg_addr, card->dev->dev_addr,
1707 card->dev->addr_len);
1708 }
1709 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1710 card->dev->header_ops->create(skb, card->dev, prot,
1711 tg_addr, &hdr->hdr.l3.dest_addr[2],
1712 card->dev->addr_len);
1713 else
1714 card->dev->header_ops->create(skb, card->dev, prot,
1715 tg_addr, "FAKELL", card->dev->addr_len);
1716 }
1717
1718 skb->protocol = eth_type_trans(skb, card->dev);
1719
1720 if (hdr->hdr.l3.ext_flags &
1721 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1722 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1723 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1724 is_vlan = 1;
1725 }
1726
1727 if (card->dev->features & NETIF_F_RXCSUM) {
1728 if ((hdr->hdr.l3.ext_flags &
1729 (QETH_HDR_EXT_CSUM_HDR_REQ |
1730 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1731 (QETH_HDR_EXT_CSUM_HDR_REQ |
1732 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1733 skb->ip_summed = CHECKSUM_UNNECESSARY;
1734 else
1735 skb->ip_summed = CHECKSUM_NONE;
1736 } else
1737 skb->ip_summed = CHECKSUM_NONE;
1738 return is_vlan;
1739 }
1740
1741 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1742 int budget, int *done)
1743 {
1744 int work_done = 0;
1745 struct sk_buff *skb;
1746 struct qeth_hdr *hdr;
1747 __u16 vlan_tag = 0;
1748 int is_vlan;
1749 unsigned int len;
1750 __u16 magic;
1751
1752 *done = 0;
1753 WARN_ON_ONCE(!budget);
1754 while (budget) {
1755 skb = qeth_core_get_next_skb(card,
1756 &card->qdio.in_q->bufs[card->rx.b_index],
1757 &card->rx.b_element, &card->rx.e_offset, &hdr);
1758 if (!skb) {
1759 *done = 1;
1760 break;
1761 }
1762 skb->dev = card->dev;
1763 switch (hdr->hdr.l3.id) {
1764 case QETH_HEADER_TYPE_LAYER3:
1765 magic = *(__u16 *)skb->data;
1766 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1767 (magic == ETH_P_AF_IUCV)) {
1768 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1769 skb->pkt_type = PACKET_HOST;
1770 skb->mac_header = NET_SKB_PAD;
1771 skb->dev = card->dev;
1772 len = skb->len;
1773 card->dev->header_ops->create(skb, card->dev, 0,
1774 card->dev->dev_addr, "FAKELL",
1775 card->dev->addr_len);
1776 netif_receive_skb(skb);
1777 } else {
1778 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1779 &vlan_tag);
1780 len = skb->len;
1781 if (is_vlan && !card->options.sniffer)
1782 __vlan_hwaccel_put_tag(skb,
1783 htons(ETH_P_8021Q), vlan_tag);
1784 napi_gro_receive(&card->napi, skb);
1785 }
1786 break;
1787 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1788 skb->pkt_type = PACKET_HOST;
1789 skb->protocol = eth_type_trans(skb, skb->dev);
1790 len = skb->len;
1791 netif_receive_skb(skb);
1792 break;
1793 default:
1794 dev_kfree_skb_any(skb);
1795 QETH_CARD_TEXT(card, 3, "inbunkno");
1796 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1797 continue;
1798 }
1799 work_done++;
1800 budget--;
1801 card->stats.rx_packets++;
1802 card->stats.rx_bytes += len;
1803 }
1804 return work_done;
1805 }
1806
1807 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1808 struct qeth_card *card)
1809 {
1810 int rc = 0;
1811 u16 vid;
1812
1813 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1814 struct net_device *netdev;
1815
1816 rcu_read_lock();
1817 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1818 vid);
1819 rcu_read_unlock();
1820 if (netdev == dev) {
1821 rc = QETH_VLAN_CARD;
1822 break;
1823 }
1824 }
1825
1826 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1827 return 0;
1828
1829 return rc;
1830 }
1831
1832 static int qeth_l3_verify_dev(struct net_device *dev)
1833 {
1834 struct qeth_card *card;
1835 int rc = 0;
1836 unsigned long flags;
1837
1838 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1839 list_for_each_entry(card, &qeth_core_card_list.list, list) {
1840 if (card->dev == dev) {
1841 rc = QETH_REAL_CARD;
1842 break;
1843 }
1844 rc = qeth_l3_verify_vlan_dev(dev, card);
1845 if (rc)
1846 break;
1847 }
1848 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1849
1850 return rc;
1851 }
1852
1853 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1854 {
1855 struct qeth_card *card = NULL;
1856 int rc;
1857
1858 rc = qeth_l3_verify_dev(dev);
1859 if (rc == QETH_REAL_CARD)
1860 card = dev->ml_priv;
1861 else if (rc == QETH_VLAN_CARD)
1862 card = vlan_dev_real_dev(dev)->ml_priv;
1863 if (card && card->options.layer2)
1864 card = NULL;
1865 if (card)
1866 QETH_CARD_TEXT_(card, 4, "%d", rc);
1867 return card ;
1868 }
1869
1870 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1871 {
1872 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1873 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1874
1875 qeth_set_allowed_threads(card, 0, 1);
1876 if (card->options.sniffer &&
1877 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1878 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1879 if (card->read.state == CH_STATE_UP &&
1880 card->write.state == CH_STATE_UP &&
1881 (card->state == CARD_STATE_UP)) {
1882 if (recovery_mode)
1883 qeth_l3_stop(card->dev);
1884 else {
1885 rtnl_lock();
1886 dev_close(card->dev);
1887 rtnl_unlock();
1888 }
1889 card->state = CARD_STATE_SOFTSETUP;
1890 }
1891 if (card->state == CARD_STATE_SOFTSETUP) {
1892 qeth_l3_clear_ip_htable(card, 1);
1893 qeth_clear_ipacmd_list(card);
1894 card->state = CARD_STATE_HARDSETUP;
1895 }
1896 if (card->state == CARD_STATE_HARDSETUP) {
1897 qeth_qdio_clear_card(card, 0);
1898 qeth_clear_qdio_buffers(card);
1899 qeth_clear_working_pool_list(card);
1900 card->state = CARD_STATE_DOWN;
1901 }
1902 if (card->state == CARD_STATE_DOWN) {
1903 qeth_clear_cmd_buffers(&card->read);
1904 qeth_clear_cmd_buffers(&card->write);
1905 }
1906 }
1907
1908 /*
1909 * test for and Switch promiscuous mode (on or off)
1910 * either for guestlan or HiperSocket Sniffer
1911 */
1912 static void
1913 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1914 {
1915 struct net_device *dev = card->dev;
1916
1917 if (((dev->flags & IFF_PROMISC) &&
1918 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1919 (!(dev->flags & IFF_PROMISC) &&
1920 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1921 return;
1922
1923 if (card->info.guestlan) { /* Guestlan trace */
1924 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1925 qeth_setadp_promisc_mode(card);
1926 } else if (card->options.sniffer && /* HiperSockets trace */
1927 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1928 if (dev->flags & IFF_PROMISC) {
1929 QETH_CARD_TEXT(card, 3, "+promisc");
1930 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1931 } else {
1932 QETH_CARD_TEXT(card, 3, "-promisc");
1933 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1934 }
1935 }
1936 }
1937
1938 static void qeth_l3_set_multicast_list(struct net_device *dev)
1939 {
1940 struct qeth_card *card = dev->ml_priv;
1941
1942 QETH_CARD_TEXT(card, 3, "setmulti");
1943 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1944 (card->state != CARD_STATE_UP))
1945 return;
1946 if (!card->options.sniffer) {
1947
1948 spin_lock_bh(&card->mclock);
1949
1950 qeth_l3_mark_all_mc_to_be_deleted(card);
1951
1952 qeth_l3_add_multicast_ipv4(card);
1953 #ifdef CONFIG_QETH_IPV6
1954 qeth_l3_add_multicast_ipv6(card);
1955 #endif
1956 qeth_l3_delete_nonused_mc(card);
1957 qeth_l3_add_all_new_mc(card);
1958
1959 spin_unlock_bh(&card->mclock);
1960
1961 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1962 return;
1963 }
1964 qeth_l3_handle_promisc_mode(card);
1965 }
1966
1967 static const char *qeth_l3_arp_get_error_cause(int *rc)
1968 {
1969 switch (*rc) {
1970 case QETH_IPA_ARP_RC_FAILED:
1971 *rc = -EIO;
1972 return "operation failed";
1973 case QETH_IPA_ARP_RC_NOTSUPP:
1974 *rc = -EOPNOTSUPP;
1975 return "operation not supported";
1976 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1977 *rc = -EINVAL;
1978 return "argument out of range";
1979 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1980 *rc = -EOPNOTSUPP;
1981 return "query operation not supported";
1982 case QETH_IPA_ARP_RC_Q_NO_DATA:
1983 *rc = -ENOENT;
1984 return "no query data available";
1985 default:
1986 return "unknown error";
1987 }
1988 }
1989
1990 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1991 {
1992 int tmp;
1993 int rc;
1994
1995 QETH_CARD_TEXT(card, 3, "arpstnoe");
1996
1997 /*
1998 * currently GuestLAN only supports the ARP assist function
1999 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2000 * thus we say EOPNOTSUPP for this ARP function
2001 */
2002 if (card->info.guestlan)
2003 return -EOPNOTSUPP;
2004 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2005 return -EOPNOTSUPP;
2006 }
2007 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2008 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2009 no_entries);
2010 if (rc) {
2011 tmp = rc;
2012 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2013 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2014 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2015 }
2016 return rc;
2017 }
2018
2019 static __u32 get_arp_entry_size(struct qeth_card *card,
2020 struct qeth_arp_query_data *qdata,
2021 struct qeth_arp_entrytype *type, __u8 strip_entries)
2022 {
2023 __u32 rc;
2024 __u8 is_hsi;
2025
2026 is_hsi = qdata->reply_bits == 5;
2027 if (type->ip == QETHARP_IP_ADDR_V4) {
2028 QETH_CARD_TEXT(card, 4, "arpev4");
2029 if (strip_entries) {
2030 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2031 sizeof(struct qeth_arp_qi_entry7_short);
2032 } else {
2033 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2034 sizeof(struct qeth_arp_qi_entry7);
2035 }
2036 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2037 QETH_CARD_TEXT(card, 4, "arpev6");
2038 if (strip_entries) {
2039 rc = is_hsi ?
2040 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2041 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2042 } else {
2043 rc = is_hsi ?
2044 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2045 sizeof(struct qeth_arp_qi_entry7_ipv6);
2046 }
2047 } else {
2048 QETH_CARD_TEXT(card, 4, "arpinv");
2049 rc = 0;
2050 }
2051
2052 return rc;
2053 }
2054
2055 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2056 {
2057 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2058 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2059 }
2060
2061 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2062 struct qeth_reply *reply, unsigned long data)
2063 {
2064 struct qeth_ipa_cmd *cmd;
2065 struct qeth_arp_query_data *qdata;
2066 struct qeth_arp_query_info *qinfo;
2067 int i;
2068 int e;
2069 int entrybytes_done;
2070 int stripped_bytes;
2071 __u8 do_strip_entries;
2072
2073 QETH_CARD_TEXT(card, 3, "arpquecb");
2074
2075 qinfo = (struct qeth_arp_query_info *) reply->param;
2076 cmd = (struct qeth_ipa_cmd *) data;
2077 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2078 if (cmd->hdr.return_code) {
2079 QETH_CARD_TEXT(card, 4, "arpcberr");
2080 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2081 return 0;
2082 }
2083 if (cmd->data.setassparms.hdr.return_code) {
2084 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2085 QETH_CARD_TEXT(card, 4, "setaperr");
2086 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2087 return 0;
2088 }
2089 qdata = &cmd->data.setassparms.data.query_arp;
2090 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2091
2092 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2093 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2094 entrybytes_done = 0;
2095 for (e = 0; e < qdata->no_entries; ++e) {
2096 char *cur_entry;
2097 __u32 esize;
2098 struct qeth_arp_entrytype *etype;
2099
2100 cur_entry = &qdata->data + entrybytes_done;
2101 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2102 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2103 QETH_CARD_TEXT(card, 4, "pmis");
2104 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2105 break;
2106 }
2107 esize = get_arp_entry_size(card, qdata, etype,
2108 do_strip_entries);
2109 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2110 if (!esize)
2111 break;
2112
2113 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2114 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2115 cmd->hdr.return_code = IPA_RC_ENOMEM;
2116 goto out_error;
2117 }
2118
2119 memcpy(qinfo->udata + qinfo->udata_offset,
2120 &qdata->data + entrybytes_done + stripped_bytes,
2121 esize);
2122 entrybytes_done += esize + stripped_bytes;
2123 qinfo->udata_offset += esize;
2124 ++qinfo->no_entries;
2125 }
2126 /* check if all replies received ... */
2127 if (cmd->data.setassparms.hdr.seq_no <
2128 cmd->data.setassparms.hdr.number_of_replies)
2129 return 1;
2130 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2131 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2132 /* keep STRIP_ENTRIES flag so the user program can distinguish
2133 * stripped entries from normal ones */
2134 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2135 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2136 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2137 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2138 return 0;
2139 out_error:
2140 i = 0;
2141 memcpy(qinfo->udata, &i, 4);
2142 return 0;
2143 }
2144
2145 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2146 struct qeth_cmd_buffer *iob, int len,
2147 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2148 unsigned long),
2149 void *reply_param)
2150 {
2151 QETH_CARD_TEXT(card, 4, "sendarp");
2152
2153 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2154 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2155 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2156 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2157 reply_cb, reply_param);
2158 }
2159
2160 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2161 enum qeth_prot_versions prot,
2162 struct qeth_arp_query_info *qinfo)
2163 {
2164 struct qeth_cmd_buffer *iob;
2165 struct qeth_ipa_cmd *cmd;
2166 int tmp;
2167 int rc;
2168
2169 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2170
2171 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2172 IPA_CMD_ASS_ARP_QUERY_INFO,
2173 sizeof(struct qeth_arp_query_data)
2174 - sizeof(char),
2175 prot);
2176 if (!iob)
2177 return -ENOMEM;
2178 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2179 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2180 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2181 cmd->data.setassparms.data.query_arp.no_entries = 0;
2182 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2183 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2184 qeth_l3_arp_query_cb, (void *)qinfo);
2185 if (rc) {
2186 tmp = rc;
2187 QETH_DBF_MESSAGE(2,
2188 "Error while querying ARP cache on %s: %s "
2189 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2190 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2191 }
2192
2193 return rc;
2194 }
2195
2196 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2197 {
2198 struct qeth_arp_query_info qinfo = {0, };
2199 int rc;
2200
2201 QETH_CARD_TEXT(card, 3, "arpquery");
2202
2203 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2204 IPA_ARP_PROCESSING)) {
2205 QETH_CARD_TEXT(card, 3, "arpqnsup");
2206 rc = -EOPNOTSUPP;
2207 goto out;
2208 }
2209 /* get size of userspace buffer and mask_bits -> 6 bytes */
2210 if (copy_from_user(&qinfo, udata, 6)) {
2211 rc = -EFAULT;
2212 goto out;
2213 }
2214 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2215 if (!qinfo.udata) {
2216 rc = -ENOMEM;
2217 goto out;
2218 }
2219 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2220 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2221 if (rc) {
2222 if (copy_to_user(udata, qinfo.udata, 4))
2223 rc = -EFAULT;
2224 goto free_and_out;
2225 }
2226 #ifdef CONFIG_QETH_IPV6
2227 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2228 /* fails in case of GuestLAN QDIO mode */
2229 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2230 }
2231 #endif
2232 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2233 QETH_CARD_TEXT(card, 4, "qactf");
2234 rc = -EFAULT;
2235 goto free_and_out;
2236 }
2237 QETH_CARD_TEXT(card, 4, "qacts");
2238
2239 free_and_out:
2240 kfree(qinfo.udata);
2241 out:
2242 return rc;
2243 }
2244
2245 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2246 struct qeth_arp_cache_entry *entry)
2247 {
2248 struct qeth_cmd_buffer *iob;
2249 char buf[16];
2250 int tmp;
2251 int rc;
2252
2253 QETH_CARD_TEXT(card, 3, "arpadent");
2254
2255 /*
2256 * currently GuestLAN only supports the ARP assist function
2257 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2258 * thus we say EOPNOTSUPP for this ARP function
2259 */
2260 if (card->info.guestlan)
2261 return -EOPNOTSUPP;
2262 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2263 return -EOPNOTSUPP;
2264 }
2265
2266 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2267 IPA_CMD_ASS_ARP_ADD_ENTRY,
2268 sizeof(struct qeth_arp_cache_entry),
2269 QETH_PROT_IPV4);
2270 if (!iob)
2271 return -ENOMEM;
2272 rc = qeth_send_setassparms(card, iob,
2273 sizeof(struct qeth_arp_cache_entry),
2274 (unsigned long) entry,
2275 qeth_setassparms_cb, NULL);
2276 if (rc) {
2277 tmp = rc;
2278 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2279 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2280 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2281 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2282 }
2283 return rc;
2284 }
2285
2286 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2287 struct qeth_arp_cache_entry *entry)
2288 {
2289 struct qeth_cmd_buffer *iob;
2290 char buf[16] = {0, };
2291 int tmp;
2292 int rc;
2293
2294 QETH_CARD_TEXT(card, 3, "arprment");
2295
2296 /*
2297 * currently GuestLAN only supports the ARP assist function
2298 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2299 * thus we say EOPNOTSUPP for this ARP function
2300 */
2301 if (card->info.guestlan)
2302 return -EOPNOTSUPP;
2303 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2304 return -EOPNOTSUPP;
2305 }
2306 memcpy(buf, entry, 12);
2307 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2308 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2309 12,
2310 QETH_PROT_IPV4);
2311 if (!iob)
2312 return -ENOMEM;
2313 rc = qeth_send_setassparms(card, iob,
2314 12, (unsigned long)buf,
2315 qeth_setassparms_cb, NULL);
2316 if (rc) {
2317 tmp = rc;
2318 memset(buf, 0, 16);
2319 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2320 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2321 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2322 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2323 }
2324 return rc;
2325 }
2326
2327 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2328 {
2329 int rc;
2330 int tmp;
2331
2332 QETH_CARD_TEXT(card, 3, "arpflush");
2333
2334 /*
2335 * currently GuestLAN only supports the ARP assist function
2336 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2337 * thus we say EOPNOTSUPP for this ARP function
2338 */
2339 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2340 return -EOPNOTSUPP;
2341 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2342 return -EOPNOTSUPP;
2343 }
2344 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2345 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2346 if (rc) {
2347 tmp = rc;
2348 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2349 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2350 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2351 }
2352 return rc;
2353 }
2354
2355 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2356 {
2357 struct qeth_card *card = dev->ml_priv;
2358 struct qeth_arp_cache_entry arp_entry;
2359 int rc = 0;
2360
2361 switch (cmd) {
2362 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2363 if (!capable(CAP_NET_ADMIN)) {
2364 rc = -EPERM;
2365 break;
2366 }
2367 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2368 break;
2369 case SIOC_QETH_ARP_QUERY_INFO:
2370 if (!capable(CAP_NET_ADMIN)) {
2371 rc = -EPERM;
2372 break;
2373 }
2374 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2375 break;
2376 case SIOC_QETH_ARP_ADD_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_add_entry(card, &arp_entry);
2386 break;
2387 case SIOC_QETH_ARP_REMOVE_ENTRY:
2388 if (!capable(CAP_NET_ADMIN)) {
2389 rc = -EPERM;
2390 break;
2391 }
2392 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2393 sizeof(struct qeth_arp_cache_entry)))
2394 rc = -EFAULT;
2395 else
2396 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2397 break;
2398 case SIOC_QETH_ARP_FLUSH_CACHE:
2399 if (!capable(CAP_NET_ADMIN)) {
2400 rc = -EPERM;
2401 break;
2402 }
2403 rc = qeth_l3_arp_flush_cache(card);
2404 break;
2405 default:
2406 rc = -EOPNOTSUPP;
2407 }
2408 return rc;
2409 }
2410
2411 inline int qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2412 {
2413 int cast_type = RTN_UNSPEC;
2414 struct neighbour *n = NULL;
2415 struct dst_entry *dst;
2416
2417 rcu_read_lock();
2418 dst = skb_dst(skb);
2419 if (dst)
2420 n = dst_neigh_lookup_skb(dst, skb);
2421 if (n) {
2422 cast_type = n->type;
2423 rcu_read_unlock();
2424 neigh_release(n);
2425 if ((cast_type == RTN_BROADCAST) ||
2426 (cast_type == RTN_MULTICAST) ||
2427 (cast_type == RTN_ANYCAST))
2428 return cast_type;
2429 else
2430 return RTN_UNSPEC;
2431 }
2432 rcu_read_unlock();
2433
2434 /* try something else */
2435 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
2436 return (skb_network_header(skb)[24] == 0xff) ?
2437 RTN_MULTICAST : 0;
2438 else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
2439 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2440 RTN_MULTICAST : 0;
2441 /* ... */
2442 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2443 return RTN_BROADCAST;
2444 else {
2445 u16 hdr_mac;
2446
2447 hdr_mac = *((u16 *)skb->data);
2448 /* tr multicast? */
2449 switch (card->info.link_type) {
2450 case QETH_LINK_TYPE_HSTR:
2451 case QETH_LINK_TYPE_LANE_TR:
2452 if ((hdr_mac == QETH_TR_MAC_NC) ||
2453 (hdr_mac == QETH_TR_MAC_C))
2454 return RTN_MULTICAST;
2455 break;
2456 /* eth or so multicast? */
2457 default:
2458 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2459 (hdr_mac == QETH_ETH_MAC_V6))
2460 return RTN_MULTICAST;
2461 }
2462 }
2463 return cast_type;
2464 }
2465
2466 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2467 struct qeth_hdr *hdr, struct sk_buff *skb)
2468 {
2469 char daddr[16];
2470 struct af_iucv_trans_hdr *iucv_hdr;
2471
2472 memset(hdr, 0, sizeof(struct qeth_hdr));
2473 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2474 hdr->hdr.l3.ext_flags = 0;
2475 hdr->hdr.l3.length = skb->len - ETH_HLEN;
2476 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2477
2478 iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2479 memset(daddr, 0, sizeof(daddr));
2480 daddr[0] = 0xfe;
2481 daddr[1] = 0x80;
2482 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2483 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2484 }
2485
2486 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2487 struct sk_buff *skb, int ipv, int cast_type)
2488 {
2489 struct dst_entry *dst;
2490
2491 memset(hdr, 0, sizeof(struct qeth_hdr));
2492 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2493 hdr->hdr.l3.ext_flags = 0;
2494
2495 /*
2496 * before we're going to overwrite this location with next hop ip.
2497 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2498 */
2499 if (skb_vlan_tag_present(skb)) {
2500 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2501 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2502 else
2503 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2504 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2505 }
2506
2507 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2508
2509 rcu_read_lock();
2510 dst = skb_dst(skb);
2511 if (ipv == 4) {
2512 struct rtable *rt = (struct rtable *) dst;
2513 __be32 *pkey = &ip_hdr(skb)->daddr;
2514
2515 if (rt->rt_gateway)
2516 pkey = &rt->rt_gateway;
2517
2518 /* IPv4 */
2519 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2520 memset(hdr->hdr.l3.dest_addr, 0, 12);
2521 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2522 } else if (ipv == 6) {
2523 struct rt6_info *rt = (struct rt6_info *) dst;
2524 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2525
2526 if (!ipv6_addr_any(&rt->rt6i_gateway))
2527 pkey = &rt->rt6i_gateway;
2528
2529 /* IPv6 */
2530 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2531 if (card->info.type == QETH_CARD_TYPE_IQD)
2532 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2533 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2534 } else {
2535 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2536 skb->dev->broadcast, 6)) {
2537 /* broadcast? */
2538 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2539 QETH_HDR_PASSTHRU;
2540 } else {
2541 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2542 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2543 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2544 }
2545 }
2546 rcu_read_unlock();
2547 }
2548
2549 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2550 struct qeth_hdr *hdr, struct sk_buff *skb)
2551 {
2552 struct iphdr *iph = ip_hdr(skb);
2553
2554 /* tcph->check contains already the pseudo hdr checksum
2555 * so just set the header flags
2556 */
2557 if (iph->protocol == IPPROTO_UDP)
2558 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2559 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2560 QETH_HDR_EXT_CSUM_HDR_REQ;
2561 iph->check = 0;
2562 if (card->options.performance_stats)
2563 card->perf_stats.tx_csum++;
2564 }
2565
2566 static void qeth_tso_fill_header(struct qeth_card *card,
2567 struct qeth_hdr *qhdr, struct sk_buff *skb)
2568 {
2569 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2570 struct tcphdr *tcph = tcp_hdr(skb);
2571 struct iphdr *iph = ip_hdr(skb);
2572 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2573
2574 /*fix header to TSO values ...*/
2575 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2576 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2577 /*set values which are fix for the first approach ...*/
2578 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2579 hdr->ext.imb_hdr_no = 1;
2580 hdr->ext.hdr_type = 1;
2581 hdr->ext.hdr_version = 1;
2582 hdr->ext.hdr_len = 28;
2583 /*insert non-fix values */
2584 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2585 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2586 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2587 sizeof(struct qeth_hdr_tso));
2588 tcph->check = 0;
2589 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2590 ip6h->payload_len = 0;
2591 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2592 0, IPPROTO_TCP, 0);
2593 } else {
2594 /*OSA want us to set these values ...*/
2595 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2596 0, IPPROTO_TCP, 0);
2597 iph->tot_len = 0;
2598 iph->check = 0;
2599 }
2600 }
2601
2602 /**
2603 * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2604 * @card: qeth card structure, to check max. elems.
2605 * @skb: SKB address
2606 * @extra_elems: extra elems needed, to check against max.
2607 *
2608 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2609 * skb data, including linear part and fragments, but excluding TCP header.
2610 * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2611 * Checks if the result plus extra_elems fits under the limit for the card.
2612 * Returns 0 if it does not.
2613 * Note: extra_elems is not included in the returned result.
2614 */
2615 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2616 struct sk_buff *skb, int extra_elems)
2617 {
2618 addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2619 int elements = qeth_get_elements_for_range(
2620 tcpdptr,
2621 (addr_t)skb->data + skb_headlen(skb)) +
2622 qeth_get_elements_for_frags(skb);
2623
2624 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2625 QETH_DBF_MESSAGE(2,
2626 "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2627 elements + extra_elems, skb->len);
2628 return 0;
2629 }
2630 return elements;
2631 }
2632
2633 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2634 struct net_device *dev)
2635 {
2636 int rc;
2637 __be16 *tag;
2638 struct qeth_hdr *hdr = NULL;
2639 int hdr_elements = 0;
2640 int elements;
2641 struct qeth_card *card = dev->ml_priv;
2642 struct sk_buff *new_skb = NULL;
2643 int ipv = qeth_get_ip_version(skb);
2644 int cast_type = qeth_l3_get_cast_type(card, skb);
2645 struct qeth_qdio_out_q *queue =
2646 card->qdio.out_qs[card->qdio.do_prio_queueing
2647 || (cast_type && card->info.is_multicast_different) ?
2648 qeth_get_priority_queue(card, skb, ipv, cast_type) :
2649 card->qdio.default_out_queue];
2650 int tx_bytes = skb->len;
2651 bool use_tso;
2652 int data_offset = -1;
2653 int nr_frags;
2654
2655 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2656 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2657 ((card->options.cq == QETH_CQ_ENABLED) &&
2658 (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) ||
2659 card->options.sniffer)
2660 goto tx_drop;
2661
2662 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2663 card->stats.tx_carrier_errors++;
2664 goto tx_drop;
2665 }
2666
2667 if ((cast_type == RTN_BROADCAST) &&
2668 (card->info.broadcast_capable == 0))
2669 goto tx_drop;
2670
2671 if (card->options.performance_stats) {
2672 card->perf_stats.outbound_cnt++;
2673 card->perf_stats.outbound_start_time = qeth_get_micros();
2674 }
2675
2676 /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2677 use_tso = skb_is_gso(skb) &&
2678 (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
2679
2680 if (card->info.type == QETH_CARD_TYPE_IQD) {
2681 new_skb = skb;
2682 data_offset = ETH_HLEN;
2683 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2684 if (!hdr)
2685 goto tx_drop;
2686 hdr_elements++;
2687 } else {
2688 /* create a clone with writeable headroom */
2689 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2690 + VLAN_HLEN);
2691 if (!new_skb)
2692 goto tx_drop;
2693
2694 if (ipv == 4) {
2695 skb_pull(new_skb, ETH_HLEN);
2696 }
2697
2698 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2699 skb_push(new_skb, VLAN_HLEN);
2700 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2701 skb_copy_to_linear_data_offset(new_skb, 4,
2702 new_skb->data + 8, 4);
2703 skb_copy_to_linear_data_offset(new_skb, 8,
2704 new_skb->data + 12, 4);
2705 tag = (__be16 *)(new_skb->data + 12);
2706 *tag = cpu_to_be16(ETH_P_8021Q);
2707 *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2708 }
2709 }
2710
2711 netif_stop_queue(dev);
2712
2713 /* fix hardware limitation: as long as we do not have sbal
2714 * chaining we can not send long frag lists
2715 */
2716 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2717 ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2718 (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2719 int lin_rc = skb_linearize(new_skb);
2720
2721 if (card->options.performance_stats) {
2722 if (lin_rc)
2723 card->perf_stats.tx_linfail++;
2724 else
2725 card->perf_stats.tx_lin++;
2726 }
2727 if (lin_rc)
2728 goto tx_drop;
2729 }
2730
2731 if (use_tso) {
2732 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2733 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2734 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2735 qeth_tso_fill_header(card, hdr, new_skb);
2736 hdr_elements++;
2737 } else {
2738 if (data_offset < 0) {
2739 hdr = skb_push(new_skb, sizeof(struct qeth_hdr));
2740 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2741 cast_type);
2742 } else {
2743 if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV)
2744 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2745 else {
2746 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2747 cast_type);
2748 hdr->hdr.l3.length = new_skb->len - data_offset;
2749 }
2750 }
2751
2752 if (skb->ip_summed == CHECKSUM_PARTIAL)
2753 qeth_l3_hdr_csum(card, hdr, new_skb);
2754 }
2755
2756 elements = use_tso ?
2757 qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2758 qeth_get_elements_no(card, new_skb, hdr_elements,
2759 (data_offset > 0) ? data_offset : 0);
2760 if (!elements) {
2761 if (data_offset >= 0)
2762 kmem_cache_free(qeth_core_header_cache, hdr);
2763 goto tx_drop;
2764 }
2765 elements += hdr_elements;
2766
2767 if (card->info.type != QETH_CARD_TYPE_IQD) {
2768 int len;
2769 if (use_tso)
2770 len = ((unsigned long)tcp_hdr(new_skb) +
2771 tcp_hdrlen(new_skb)) -
2772 (unsigned long)new_skb->data;
2773 else
2774 len = sizeof(struct qeth_hdr_layer3);
2775
2776 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2777 goto tx_drop;
2778 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
2779 } else
2780 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2781 data_offset, 0);
2782
2783 if (!rc) {
2784 card->stats.tx_packets++;
2785 card->stats.tx_bytes += tx_bytes;
2786 if (new_skb != skb)
2787 dev_kfree_skb_any(skb);
2788 if (card->options.performance_stats) {
2789 nr_frags = skb_shinfo(new_skb)->nr_frags;
2790 if (use_tso) {
2791 card->perf_stats.large_send_bytes += tx_bytes;
2792 card->perf_stats.large_send_cnt++;
2793 }
2794 if (nr_frags) {
2795 card->perf_stats.sg_skbs_sent++;
2796 /* nr_frags + skb->data */
2797 card->perf_stats.sg_frags_sent += nr_frags + 1;
2798 }
2799 }
2800 rc = NETDEV_TX_OK;
2801 } else {
2802 if (data_offset >= 0)
2803 kmem_cache_free(qeth_core_header_cache, hdr);
2804
2805 if (rc == -EBUSY) {
2806 if (new_skb != skb)
2807 dev_kfree_skb_any(new_skb);
2808 return NETDEV_TX_BUSY;
2809 } else
2810 goto tx_drop;
2811 }
2812
2813 netif_wake_queue(dev);
2814 if (card->options.performance_stats)
2815 card->perf_stats.outbound_time += qeth_get_micros() -
2816 card->perf_stats.outbound_start_time;
2817 return rc;
2818
2819 tx_drop:
2820 card->stats.tx_dropped++;
2821 card->stats.tx_errors++;
2822 if ((new_skb != skb) && new_skb)
2823 dev_kfree_skb_any(new_skb);
2824 dev_kfree_skb_any(skb);
2825 netif_wake_queue(dev);
2826 return NETDEV_TX_OK;
2827 }
2828
2829 static int __qeth_l3_open(struct net_device *dev)
2830 {
2831 struct qeth_card *card = dev->ml_priv;
2832 int rc = 0;
2833
2834 QETH_CARD_TEXT(card, 4, "qethopen");
2835 if (card->state == CARD_STATE_UP)
2836 return rc;
2837 if (card->state != CARD_STATE_SOFTSETUP)
2838 return -ENODEV;
2839 card->data.state = CH_STATE_UP;
2840 card->state = CARD_STATE_UP;
2841 netif_start_queue(dev);
2842
2843 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2844 napi_enable(&card->napi);
2845 napi_schedule(&card->napi);
2846 } else
2847 rc = -EIO;
2848 return rc;
2849 }
2850
2851 static int qeth_l3_open(struct net_device *dev)
2852 {
2853 struct qeth_card *card = dev->ml_priv;
2854
2855 QETH_CARD_TEXT(card, 5, "qethope_");
2856 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2857 QETH_CARD_TEXT(card, 3, "openREC");
2858 return -ERESTARTSYS;
2859 }
2860 return __qeth_l3_open(dev);
2861 }
2862
2863 static int qeth_l3_stop(struct net_device *dev)
2864 {
2865 struct qeth_card *card = dev->ml_priv;
2866
2867 QETH_CARD_TEXT(card, 4, "qethstop");
2868 netif_tx_disable(dev);
2869 if (card->state == CARD_STATE_UP) {
2870 card->state = CARD_STATE_SOFTSETUP;
2871 napi_disable(&card->napi);
2872 }
2873 return 0;
2874 }
2875
2876 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2877 .get_link = ethtool_op_get_link,
2878 .get_strings = qeth_core_get_strings,
2879 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2880 .get_sset_count = qeth_core_get_sset_count,
2881 .get_drvinfo = qeth_core_get_drvinfo,
2882 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2883 };
2884
2885 /*
2886 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2887 * NOARP on the netdevice is no option because it also turns off neighbor
2888 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2889 * arp resolution but we want the hard header (packet socket will work
2890 * e.g. tcpdump)
2891 */
2892 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2893 {
2894 n->nud_state = NUD_NOARP;
2895 memcpy(n->ha, "FAKELL", 6);
2896 n->output = n->ops->connected_output;
2897 return 0;
2898 }
2899
2900 static int
2901 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2902 {
2903 if (np->tbl->family == AF_INET)
2904 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2905
2906 return 0;
2907 }
2908
2909 static const struct net_device_ops qeth_l3_netdev_ops = {
2910 .ndo_open = qeth_l3_open,
2911 .ndo_stop = qeth_l3_stop,
2912 .ndo_get_stats = qeth_get_stats,
2913 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2914 .ndo_validate_addr = eth_validate_addr,
2915 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
2916 .ndo_do_ioctl = qeth_do_ioctl,
2917 .ndo_change_mtu = qeth_change_mtu,
2918 .ndo_fix_features = qeth_fix_features,
2919 .ndo_set_features = qeth_set_features,
2920 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2921 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2922 .ndo_tx_timeout = qeth_tx_timeout,
2923 };
2924
2925 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2926 .ndo_open = qeth_l3_open,
2927 .ndo_stop = qeth_l3_stop,
2928 .ndo_get_stats = qeth_get_stats,
2929 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2930 .ndo_validate_addr = eth_validate_addr,
2931 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
2932 .ndo_do_ioctl = qeth_do_ioctl,
2933 .ndo_change_mtu = qeth_change_mtu,
2934 .ndo_fix_features = qeth_fix_features,
2935 .ndo_set_features = qeth_set_features,
2936 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2937 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2938 .ndo_tx_timeout = qeth_tx_timeout,
2939 .ndo_neigh_setup = qeth_l3_neigh_setup,
2940 };
2941
2942 static int qeth_l3_setup_netdev(struct qeth_card *card)
2943 {
2944 int rc;
2945
2946 if (card->info.type == QETH_CARD_TYPE_OSD ||
2947 card->info.type == QETH_CARD_TYPE_OSX) {
2948 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2949 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2950 pr_info("qeth_l3: ignoring TR device\n");
2951 return -ENODEV;
2952 } else {
2953 card->dev = alloc_etherdev(0);
2954 if (!card->dev)
2955 return -ENODEV;
2956 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2957
2958 /*IPv6 address autoconfiguration stuff*/
2959 qeth_l3_get_unique_id(card);
2960 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2961 card->dev->dev_id = card->info.unique_id &
2962 0xffff;
2963 if (!card->info.guestlan) {
2964 card->dev->hw_features = NETIF_F_SG |
2965 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2966 NETIF_F_TSO;
2967 card->dev->vlan_features = NETIF_F_SG |
2968 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2969 NETIF_F_TSO;
2970 }
2971 }
2972 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2973 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
2974 ether_setup);
2975 if (!card->dev)
2976 return -ENODEV;
2977 card->dev->flags |= IFF_NOARP;
2978 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2979 rc = qeth_l3_iqd_read_initial_mac(card);
2980 if (rc)
2981 return rc;
2982 if (card->options.hsuid[0])
2983 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2984 } else
2985 return -ENODEV;
2986
2987 card->dev->ml_priv = card;
2988 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2989 card->dev->mtu = card->info.initial_mtu;
2990 card->dev->min_mtu = 64;
2991 card->dev->max_mtu = ETH_MAX_MTU;
2992 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2993 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2994 NETIF_F_HW_VLAN_CTAG_RX |
2995 NETIF_F_HW_VLAN_CTAG_FILTER;
2996 netif_keep_dst(card->dev);
2997 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
2998 PAGE_SIZE;
2999
3000 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3001 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
3002 netif_carrier_off(card->dev);
3003 return register_netdev(card->dev);
3004 }
3005
3006 static const struct device_type qeth_l3_devtype = {
3007 .name = "qeth_layer3",
3008 .groups = qeth_l3_attr_groups,
3009 };
3010
3011 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3012 {
3013 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3014 int rc;
3015
3016 if (gdev->dev.type == &qeth_generic_devtype) {
3017 rc = qeth_l3_create_device_attributes(&gdev->dev);
3018 if (rc)
3019 return rc;
3020 }
3021 hash_init(card->ip_htable);
3022 hash_init(card->ip_mc_htable);
3023 card->options.layer2 = 0;
3024 card->info.hwtrap = 0;
3025 return 0;
3026 }
3027
3028 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3029 {
3030 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3031
3032 if (cgdev->dev.type == &qeth_generic_devtype)
3033 qeth_l3_remove_device_attributes(&cgdev->dev);
3034
3035 qeth_set_allowed_threads(card, 0, 1);
3036 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3037
3038 if (cgdev->state == CCWGROUP_ONLINE)
3039 qeth_l3_set_offline(cgdev);
3040
3041 if (card->dev) {
3042 netif_napi_del(&card->napi);
3043 unregister_netdev(card->dev);
3044 card->dev = NULL;
3045 }
3046
3047 qeth_l3_clear_ip_htable(card, 0);
3048 qeth_l3_clear_ipato_list(card);
3049 return;
3050 }
3051
3052 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3053 {
3054 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3055 int rc = 0;
3056 enum qeth_card_states recover_flag;
3057
3058 mutex_lock(&card->discipline_mutex);
3059 mutex_lock(&card->conf_mutex);
3060 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3061 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3062
3063 recover_flag = card->state;
3064 rc = qeth_core_hardsetup_card(card);
3065 if (rc) {
3066 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3067 rc = -ENODEV;
3068 goto out_remove;
3069 }
3070
3071 if (!card->dev && qeth_l3_setup_netdev(card)) {
3072 rc = -ENODEV;
3073 goto out_remove;
3074 }
3075
3076 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3077 if (card->info.hwtrap &&
3078 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3079 card->info.hwtrap = 0;
3080 } else
3081 card->info.hwtrap = 0;
3082
3083 card->state = CARD_STATE_HARDSETUP;
3084 memset(&card->rx, 0, sizeof(struct qeth_rx));
3085 qeth_print_status_message(card);
3086
3087 /* softsetup */
3088 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3089
3090 rc = qeth_l3_setadapter_parms(card);
3091 if (rc)
3092 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3093 if (!card->options.sniffer) {
3094 rc = qeth_l3_start_ipassists(card);
3095 if (rc) {
3096 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3097 goto out_remove;
3098 }
3099 rc = qeth_l3_setrouting_v4(card);
3100 if (rc)
3101 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3102 rc = qeth_l3_setrouting_v6(card);
3103 if (rc)
3104 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3105 }
3106 netif_tx_disable(card->dev);
3107
3108 rc = qeth_init_qdio_queues(card);
3109 if (rc) {
3110 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3111 rc = -ENODEV;
3112 goto out_remove;
3113 }
3114 card->state = CARD_STATE_SOFTSETUP;
3115
3116 qeth_set_allowed_threads(card, 0xffffffff, 0);
3117 qeth_l3_recover_ip(card);
3118 if (card->lan_online)
3119 netif_carrier_on(card->dev);
3120 else
3121 netif_carrier_off(card->dev);
3122 if (recover_flag == CARD_STATE_RECOVER) {
3123 rtnl_lock();
3124 if (recovery_mode)
3125 __qeth_l3_open(card->dev);
3126 else
3127 dev_open(card->dev);
3128 qeth_l3_set_multicast_list(card->dev);
3129 qeth_recover_features(card->dev);
3130 rtnl_unlock();
3131 }
3132 qeth_trace_features(card);
3133 /* let user_space know that device is online */
3134 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3135 mutex_unlock(&card->conf_mutex);
3136 mutex_unlock(&card->discipline_mutex);
3137 return 0;
3138 out_remove:
3139 qeth_l3_stop_card(card, 0);
3140 ccw_device_set_offline(CARD_DDEV(card));
3141 ccw_device_set_offline(CARD_WDEV(card));
3142 ccw_device_set_offline(CARD_RDEV(card));
3143 qdio_free(CARD_DDEV(card));
3144 if (recover_flag == CARD_STATE_RECOVER)
3145 card->state = CARD_STATE_RECOVER;
3146 else
3147 card->state = CARD_STATE_DOWN;
3148 mutex_unlock(&card->conf_mutex);
3149 mutex_unlock(&card->discipline_mutex);
3150 return rc;
3151 }
3152
3153 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3154 {
3155 return __qeth_l3_set_online(gdev, 0);
3156 }
3157
3158 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3159 int recovery_mode)
3160 {
3161 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3162 int rc = 0, rc2 = 0, rc3 = 0;
3163 enum qeth_card_states recover_flag;
3164
3165 mutex_lock(&card->discipline_mutex);
3166 mutex_lock(&card->conf_mutex);
3167 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3168 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3169
3170 if (card->dev && netif_carrier_ok(card->dev))
3171 netif_carrier_off(card->dev);
3172 recover_flag = card->state;
3173 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3174 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3175 card->info.hwtrap = 1;
3176 }
3177 qeth_l3_stop_card(card, recovery_mode);
3178 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3179 rtnl_lock();
3180 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3181 rtnl_unlock();
3182 }
3183 rc = ccw_device_set_offline(CARD_DDEV(card));
3184 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3185 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3186 if (!rc)
3187 rc = (rc2) ? rc2 : rc3;
3188 if (rc)
3189 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3190 qdio_free(CARD_DDEV(card));
3191 if (recover_flag == CARD_STATE_UP)
3192 card->state = CARD_STATE_RECOVER;
3193 /* let user_space know that device is offline */
3194 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3195 mutex_unlock(&card->conf_mutex);
3196 mutex_unlock(&card->discipline_mutex);
3197 return 0;
3198 }
3199
3200 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3201 {
3202 return __qeth_l3_set_offline(cgdev, 0);
3203 }
3204
3205 static int qeth_l3_recover(void *ptr)
3206 {
3207 struct qeth_card *card;
3208 int rc = 0;
3209
3210 card = (struct qeth_card *) ptr;
3211 QETH_CARD_TEXT(card, 2, "recover1");
3212 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3213 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3214 return 0;
3215 QETH_CARD_TEXT(card, 2, "recover2");
3216 dev_warn(&card->gdev->dev,
3217 "A recovery process has been started for the device\n");
3218 qeth_set_recovery_task(card);
3219 __qeth_l3_set_offline(card->gdev, 1);
3220 rc = __qeth_l3_set_online(card->gdev, 1);
3221 if (!rc)
3222 dev_info(&card->gdev->dev,
3223 "Device successfully recovered!\n");
3224 else {
3225 qeth_close_dev(card);
3226 dev_warn(&card->gdev->dev, "The qeth device driver "
3227 "failed to recover an error on the device\n");
3228 }
3229 qeth_clear_recovery_task(card);
3230 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3231 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3232 return 0;
3233 }
3234
3235 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3236 {
3237 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3238
3239 if (card->dev)
3240 netif_device_detach(card->dev);
3241 qeth_set_allowed_threads(card, 0, 1);
3242 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3243 if (gdev->state == CCWGROUP_OFFLINE)
3244 return 0;
3245 if (card->state == CARD_STATE_UP) {
3246 if (card->info.hwtrap)
3247 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3248 __qeth_l3_set_offline(card->gdev, 1);
3249 } else
3250 __qeth_l3_set_offline(card->gdev, 0);
3251 return 0;
3252 }
3253
3254 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3255 {
3256 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3257 int rc = 0;
3258
3259 if (gdev->state == CCWGROUP_OFFLINE)
3260 goto out;
3261
3262 if (card->state == CARD_STATE_RECOVER) {
3263 rc = __qeth_l3_set_online(card->gdev, 1);
3264 if (rc) {
3265 rtnl_lock();
3266 dev_close(card->dev);
3267 rtnl_unlock();
3268 }
3269 } else
3270 rc = __qeth_l3_set_online(card->gdev, 0);
3271 out:
3272 qeth_set_allowed_threads(card, 0xffffffff, 0);
3273 if (card->dev)
3274 netif_device_attach(card->dev);
3275 if (rc)
3276 dev_warn(&card->gdev->dev, "The qeth device driver "
3277 "failed to recover an error on the device\n");
3278 return rc;
3279 }
3280
3281 /* Returns zero if the command is successfully "consumed" */
3282 static int qeth_l3_control_event(struct qeth_card *card,
3283 struct qeth_ipa_cmd *cmd)
3284 {
3285 return 1;
3286 }
3287
3288 struct qeth_discipline qeth_l3_discipline = {
3289 .devtype = &qeth_l3_devtype,
3290 .start_poll = qeth_qdio_start_poll,
3291 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3292 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3293 .process_rx_buffer = qeth_l3_process_inbound_buffer,
3294 .recover = qeth_l3_recover,
3295 .setup = qeth_l3_probe_device,
3296 .remove = qeth_l3_remove_device,
3297 .set_online = qeth_l3_set_online,
3298 .set_offline = qeth_l3_set_offline,
3299 .freeze = qeth_l3_pm_suspend,
3300 .thaw = qeth_l3_pm_resume,
3301 .restore = qeth_l3_pm_resume,
3302 .do_ioctl = qeth_l3_do_ioctl,
3303 .control_event_handler = qeth_l3_control_event,
3304 };
3305 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3306
3307 static int qeth_l3_ip_event(struct notifier_block *this,
3308 unsigned long event, void *ptr)
3309 {
3310
3311 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3312 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3313 struct qeth_ipaddr *addr;
3314 struct qeth_card *card;
3315
3316 if (dev_net(dev) != &init_net)
3317 return NOTIFY_DONE;
3318
3319 card = qeth_l3_get_card_from_dev(dev);
3320 if (!card)
3321 return NOTIFY_DONE;
3322 QETH_CARD_TEXT(card, 3, "ipevent");
3323
3324 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3325 if (addr) {
3326 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
3327 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
3328 addr->type = QETH_IP_TYPE_NORMAL;
3329 } else
3330 return NOTIFY_DONE;
3331
3332 switch (event) {
3333 case NETDEV_UP:
3334 spin_lock_bh(&card->ip_lock);
3335 qeth_l3_add_ip(card, addr);
3336 spin_unlock_bh(&card->ip_lock);
3337 break;
3338 case NETDEV_DOWN:
3339 spin_lock_bh(&card->ip_lock);
3340 qeth_l3_delete_ip(card, addr);
3341 spin_unlock_bh(&card->ip_lock);
3342 break;
3343 }
3344
3345 kfree(addr);
3346 return NOTIFY_DONE;
3347 }
3348
3349 static struct notifier_block qeth_l3_ip_notifier = {
3350 qeth_l3_ip_event,
3351 NULL,
3352 };
3353
3354 #ifdef CONFIG_QETH_IPV6
3355 /**
3356 * IPv6 event handler
3357 */
3358 static int qeth_l3_ip6_event(struct notifier_block *this,
3359 unsigned long event, void *ptr)
3360 {
3361 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3362 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3363 struct qeth_ipaddr *addr;
3364 struct qeth_card *card;
3365
3366 card = qeth_l3_get_card_from_dev(dev);
3367 if (!card)
3368 return NOTIFY_DONE;
3369 QETH_CARD_TEXT(card, 3, "ip6event");
3370 if (!qeth_is_supported(card, IPA_IPV6))
3371 return NOTIFY_DONE;
3372
3373 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3374 if (addr) {
3375 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3376 addr->u.a6.pfxlen = ifa->prefix_len;
3377 addr->type = QETH_IP_TYPE_NORMAL;
3378 } else
3379 return NOTIFY_DONE;
3380
3381 switch (event) {
3382 case NETDEV_UP:
3383 spin_lock_bh(&card->ip_lock);
3384 qeth_l3_add_ip(card, addr);
3385 spin_unlock_bh(&card->ip_lock);
3386 break;
3387 case NETDEV_DOWN:
3388 spin_lock_bh(&card->ip_lock);
3389 qeth_l3_delete_ip(card, addr);
3390 spin_unlock_bh(&card->ip_lock);
3391 break;
3392 }
3393
3394 kfree(addr);
3395 return NOTIFY_DONE;
3396 }
3397
3398 static struct notifier_block qeth_l3_ip6_notifier = {
3399 qeth_l3_ip6_event,
3400 NULL,
3401 };
3402 #endif
3403
3404 static int qeth_l3_register_notifiers(void)
3405 {
3406 int rc;
3407
3408 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3409 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3410 if (rc)
3411 return rc;
3412 #ifdef CONFIG_QETH_IPV6
3413 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3414 if (rc) {
3415 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3416 return rc;
3417 }
3418 #else
3419 pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3420 #endif
3421 return 0;
3422 }
3423
3424 static void qeth_l3_unregister_notifiers(void)
3425 {
3426
3427 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3428 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3429 #ifdef CONFIG_QETH_IPV6
3430 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3431 #endif /* QETH_IPV6 */
3432 }
3433
3434 static int __init qeth_l3_init(void)
3435 {
3436 int rc = 0;
3437
3438 pr_info("register layer 3 discipline\n");
3439 rc = qeth_l3_register_notifiers();
3440 return rc;
3441 }
3442
3443 static void __exit qeth_l3_exit(void)
3444 {
3445 qeth_l3_unregister_notifiers();
3446 pr_info("unregister layer 3 discipline\n");
3447 }
3448
3449 module_init(qeth_l3_init);
3450 module_exit(qeth_l3_exit);
3451 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3452 MODULE_DESCRIPTION("qeth layer 3 discipline");
3453 MODULE_LICENSE("GPL");
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