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qeth: l3 fix rcu splat in xmit
[zen-stable.git] / drivers / s390 / net / qeth_l3_main.c
blob4d5307ddbe55b03ce78b89e423369927c171c2c1
1 /*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/bitops.h>
17 #include <linux/string.h>
18 #include <linux/errno.h>
19 #include <linux/kernel.h>
20 #include <linux/etherdevice.h>
21 #include <linux/mii.h>
22 #include <linux/ip.h>
23 #include <linux/ipv6.h>
24 #include <linux/inetdevice.h>
25 #include <linux/igmp.h>
26 #include <linux/slab.h>
27 #include <linux/if_vlan.h>
28
29 #include <net/ip.h>
30 #include <net/arp.h>
31 #include <net/ip6_checksum.h>
32 #include <net/iucv/af_iucv.h>
33
34 #include "qeth_l3.h"
35
36
37 static int qeth_l3_set_offline(struct ccwgroup_device *);
38 static int qeth_l3_recover(void *);
39 static int qeth_l3_stop(struct net_device *);
40 static void qeth_l3_set_multicast_list(struct net_device *);
41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
42 static int qeth_l3_register_addr_entry(struct qeth_card *,
43 struct qeth_ipaddr *);
44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
48
49 static int qeth_l3_isxdigit(char *buf)
50 {
51 while (*buf) {
52 if (!isxdigit(*buf++))
53 return 0;
54 }
55 return 1;
56 }
57
58 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
59 {
60 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
61 }
62
63 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
64 {
65 int count = 0, rc = 0;
66 int in[4];
67 char c;
68
69 rc = sscanf(buf, "%u.%u.%u.%u%c",
70 &in[0], &in[1], &in[2], &in[3], &c);
71 if (rc != 4 && (rc != 5 || c != '\n'))
72 return -EINVAL;
73 for (count = 0; count < 4; count++) {
74 if (in[count] > 255)
75 return -EINVAL;
76 addr[count] = in[count];
77 }
78 return 0;
79 }
80
81 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
82 {
83 sprintf(buf, "%pI6", addr);
84 }
85
86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
87 {
88 const char *end, *end_tmp, *start;
89 __u16 *in;
90 char num[5];
91 int num2, cnt, out, found, save_cnt;
92 unsigned short in_tmp[8] = {0, };
93
94 cnt = out = found = save_cnt = num2 = 0;
95 end = start = buf;
96 in = (__u16 *) addr;
97 memset(in, 0, 16);
98 while (*end) {
99 end = strchr(start, ':');
100 if (end == NULL) {
101 end = buf + strlen(buf);
102 end_tmp = strchr(start, '\n');
103 if (end_tmp != NULL)
104 end = end_tmp;
105 out = 1;
106 }
107 if ((end - start)) {
108 memset(num, 0, 5);
109 if ((end - start) > 4)
110 return -EINVAL;
111 memcpy(num, start, end - start);
112 if (!qeth_l3_isxdigit(num))
113 return -EINVAL;
114 sscanf(start, "%x", &num2);
115 if (found)
116 in_tmp[save_cnt++] = num2;
117 else
118 in[cnt++] = num2;
119 if (out)
120 break;
121 } else {
122 if (found)
123 return -EINVAL;
124 found = 1;
125 }
126 start = ++end;
127 }
128 if (cnt + save_cnt > 8)
129 return -EINVAL;
130 cnt = 7;
131 while (save_cnt)
132 in[cnt--] = in_tmp[--save_cnt];
133 return 0;
134 }
135
136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
137 char *buf)
138 {
139 if (proto == QETH_PROT_IPV4)
140 qeth_l3_ipaddr4_to_string(addr, buf);
141 else if (proto == QETH_PROT_IPV6)
142 qeth_l3_ipaddr6_to_string(addr, buf);
143 }
144
145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
146 __u8 *addr)
147 {
148 if (proto == QETH_PROT_IPV4)
149 return qeth_l3_string_to_ipaddr4(buf, addr);
150 else if (proto == QETH_PROT_IPV6)
151 return qeth_l3_string_to_ipaddr6(buf, addr);
152 else
153 return -EINVAL;
154 }
155
156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
157 {
158 int i, j;
159 u8 octet;
160
161 for (i = 0; i < len; ++i) {
162 octet = addr[i];
163 for (j = 7; j >= 0; --j) {
164 bits[i*8 + j] = octet & 1;
165 octet >>= 1;
166 }
167 }
168 }
169
170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
171 struct qeth_ipaddr *addr)
172 {
173 struct qeth_ipato_entry *ipatoe;
174 u8 addr_bits[128] = {0, };
175 u8 ipatoe_bits[128] = {0, };
176 int rc = 0;
177
178 if (!card->ipato.enabled)
179 return 0;
180
181 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
182 (addr->proto == QETH_PROT_IPV4)? 4:16);
183 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
184 if (addr->proto != ipatoe->proto)
185 continue;
186 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
187 (ipatoe->proto == QETH_PROT_IPV4) ?
188 4 : 16);
189 if (addr->proto == QETH_PROT_IPV4)
190 rc = !memcmp(addr_bits, ipatoe_bits,
191 min(32, ipatoe->mask_bits));
192 else
193 rc = !memcmp(addr_bits, ipatoe_bits,
194 min(128, ipatoe->mask_bits));
195 if (rc)
196 break;
197 }
198 /* invert? */
199 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
200 rc = !rc;
201 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
202 rc = !rc;
203
204 return rc;
205 }
206
207 /*
208 * Add IP to be added to todo list. If there is already an "add todo"
209 * in this list we just incremenent the reference count.
210 * Returns 0 if we just incremented reference count.
211 */
212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
213 struct qeth_ipaddr *addr, int add)
214 {
215 struct qeth_ipaddr *tmp, *t;
216 int found = 0;
217
218 if (card->options.sniffer)
219 return 0;
220 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
221 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
222 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
223 return 0;
224 if ((tmp->proto == QETH_PROT_IPV4) &&
225 (addr->proto == QETH_PROT_IPV4) &&
226 (tmp->type == addr->type) &&
227 (tmp->is_multicast == addr->is_multicast) &&
228 (tmp->u.a4.addr == addr->u.a4.addr) &&
229 (tmp->u.a4.mask == addr->u.a4.mask)) {
230 found = 1;
231 break;
232 }
233 if ((tmp->proto == QETH_PROT_IPV6) &&
234 (addr->proto == QETH_PROT_IPV6) &&
235 (tmp->type == addr->type) &&
236 (tmp->is_multicast == addr->is_multicast) &&
237 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
238 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
239 sizeof(struct in6_addr)) == 0)) {
240 found = 1;
241 break;
242 }
243 }
244 if (found) {
245 if (addr->users != 0)
246 tmp->users += addr->users;
247 else
248 tmp->users += add ? 1 : -1;
249 if (tmp->users == 0) {
250 list_del(&tmp->entry);
251 kfree(tmp);
252 }
253 return 0;
254 } else {
255 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
256 list_add(&addr->entry, card->ip_tbd_list);
257 else {
258 if (addr->users == 0)
259 addr->users += add ? 1 : -1;
260 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
261 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
262 QETH_CARD_TEXT(card, 2, "tkovaddr");
263 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
264 }
265 list_add_tail(&addr->entry, card->ip_tbd_list);
266 }
267 return 1;
268 }
269 }
270
271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
272 {
273 unsigned long flags;
274 int rc = 0;
275
276 QETH_CARD_TEXT(card, 4, "delip");
277
278 if (addr->proto == QETH_PROT_IPV4)
279 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
280 else {
281 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
282 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
283 }
284 spin_lock_irqsave(&card->ip_lock, flags);
285 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
286 spin_unlock_irqrestore(&card->ip_lock, flags);
287 return rc;
288 }
289
290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
291 {
292 unsigned long flags;
293 int rc = 0;
294
295 QETH_CARD_TEXT(card, 4, "addip");
296 if (addr->proto == QETH_PROT_IPV4)
297 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
298 else {
299 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
300 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
301 }
302 spin_lock_irqsave(&card->ip_lock, flags);
303 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
304 spin_unlock_irqrestore(&card->ip_lock, flags);
305 return rc;
306 }
307
308
309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
310 enum qeth_prot_versions prot)
311 {
312 struct qeth_ipaddr *addr;
313
314 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
315 if (addr == NULL) {
316 return NULL;
317 }
318 addr->type = QETH_IP_TYPE_NORMAL;
319 addr->proto = prot;
320 return addr;
321 }
322
323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
324 {
325 struct qeth_ipaddr *iptodo;
326 unsigned long flags;
327
328 QETH_CARD_TEXT(card, 4, "delmc");
329 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
330 if (!iptodo) {
331 QETH_CARD_TEXT(card, 2, "dmcnomem");
332 return;
333 }
334 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
335 spin_lock_irqsave(&card->ip_lock, flags);
336 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
337 kfree(iptodo);
338 spin_unlock_irqrestore(&card->ip_lock, flags);
339 }
340
341 /*
342 * Add/remove address to/from card's ip list, i.e. try to add or remove
343 * reference to/from an IP address that is already registered on the card.
344 * Returns:
345 * 0 address was on card and its reference count has been adjusted,
346 * but is still > 0, so nothing has to be done
347 * also returns 0 if card was not on card and the todo was to delete
348 * the address -> there is also nothing to be done
349 * 1 address was not on card and the todo is to add it to the card's ip
350 * list
351 * -1 address was on card and its reference count has been decremented
352 * to <= 0 by the todo -> address must be removed from card
353 */
354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
355 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
356 {
357 struct qeth_ipaddr *addr;
358 int found = 0;
359
360 list_for_each_entry(addr, &card->ip_list, entry) {
361 if ((addr->proto == QETH_PROT_IPV4) &&
362 (todo->proto == QETH_PROT_IPV4) &&
363 (addr->type == todo->type) &&
364 (addr->u.a4.addr == todo->u.a4.addr) &&
365 (addr->u.a4.mask == todo->u.a4.mask)) {
366 found = 1;
367 break;
368 }
369 if ((addr->proto == QETH_PROT_IPV6) &&
370 (todo->proto == QETH_PROT_IPV6) &&
371 (addr->type == todo->type) &&
372 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
373 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
374 sizeof(struct in6_addr)) == 0)) {
375 found = 1;
376 break;
377 }
378 }
379 if (found) {
380 addr->users += todo->users;
381 if (addr->users <= 0) {
382 *__addr = addr;
383 return -1;
384 } else {
385 /* for VIPA and RXIP limit refcount to 1 */
386 if (addr->type != QETH_IP_TYPE_NORMAL)
387 addr->users = 1;
388 return 0;
389 }
390 }
391 if (todo->users > 0) {
392 /* for VIPA and RXIP limit refcount to 1 */
393 if (todo->type != QETH_IP_TYPE_NORMAL)
394 todo->users = 1;
395 return 1;
396 } else
397 return 0;
398 }
399
400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
401 unsigned long *flags)
402 {
403 struct list_head fail_list;
404 struct qeth_ipaddr *addr, *tmp;
405 int rc;
406
407 INIT_LIST_HEAD(&fail_list);
408 again:
409 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
410 if (addr->is_multicast) {
411 list_del(&addr->entry);
412 spin_unlock_irqrestore(&card->ip_lock, *flags);
413 rc = qeth_l3_deregister_addr_entry(card, addr);
414 spin_lock_irqsave(&card->ip_lock, *flags);
415 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
416 kfree(addr);
417 else
418 list_add_tail(&addr->entry, &fail_list);
419 goto again;
420 }
421 }
422 list_splice(&fail_list, &card->ip_list);
423 }
424
425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
426 {
427 struct list_head *tbd_list;
428 struct qeth_ipaddr *todo, *addr;
429 unsigned long flags;
430 int rc;
431
432 QETH_CARD_TEXT(card, 2, "sdiplist");
433 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
434
435 if ((card->state != CARD_STATE_UP &&
436 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
437 return;
438 }
439
440 spin_lock_irqsave(&card->ip_lock, flags);
441 tbd_list = card->ip_tbd_list;
442 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
443 if (!card->ip_tbd_list) {
444 QETH_CARD_TEXT(card, 0, "silnomem");
445 card->ip_tbd_list = tbd_list;
446 spin_unlock_irqrestore(&card->ip_lock, flags);
447 return;
448 } else
449 INIT_LIST_HEAD(card->ip_tbd_list);
450
451 while (!list_empty(tbd_list)) {
452 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
453 list_del(&todo->entry);
454 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
455 __qeth_l3_delete_all_mc(card, &flags);
456 kfree(todo);
457 continue;
458 }
459 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
460 if (rc == 0) {
461 /* nothing to be done; only adjusted refcount */
462 kfree(todo);
463 } else if (rc == 1) {
464 /* new entry to be added to on-card list */
465 spin_unlock_irqrestore(&card->ip_lock, flags);
466 rc = qeth_l3_register_addr_entry(card, todo);
467 spin_lock_irqsave(&card->ip_lock, flags);
468 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
469 list_add_tail(&todo->entry, &card->ip_list);
470 else
471 kfree(todo);
472 } else if (rc == -1) {
473 /* on-card entry to be removed */
474 list_del_init(&addr->entry);
475 spin_unlock_irqrestore(&card->ip_lock, flags);
476 rc = qeth_l3_deregister_addr_entry(card, addr);
477 spin_lock_irqsave(&card->ip_lock, flags);
478 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
479 kfree(addr);
480 else
481 list_add_tail(&addr->entry, &card->ip_list);
482 kfree(todo);
483 }
484 }
485 spin_unlock_irqrestore(&card->ip_lock, flags);
486 kfree(tbd_list);
487 }
488
489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
490 {
491 struct qeth_ipaddr *addr, *tmp;
492 unsigned long flags;
493
494 QETH_CARD_TEXT(card, 4, "clearip");
495 if (recover && card->options.sniffer)
496 return;
497 spin_lock_irqsave(&card->ip_lock, flags);
498 /* clear todo list */
499 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
500 list_del(&addr->entry);
501 kfree(addr);
502 }
503
504 while (!list_empty(&card->ip_list)) {
505 addr = list_entry(card->ip_list.next,
506 struct qeth_ipaddr, entry);
507 list_del_init(&addr->entry);
508 if (!recover || addr->is_multicast) {
509 kfree(addr);
510 continue;
511 }
512 list_add_tail(&addr->entry, card->ip_tbd_list);
513 }
514 spin_unlock_irqrestore(&card->ip_lock, flags);
515 }
516
517 static int qeth_l3_address_exists_in_list(struct list_head *list,
518 struct qeth_ipaddr *addr, int same_type)
519 {
520 struct qeth_ipaddr *tmp;
521
522 list_for_each_entry(tmp, list, entry) {
523 if ((tmp->proto == QETH_PROT_IPV4) &&
524 (addr->proto == QETH_PROT_IPV4) &&
525 ((same_type && (tmp->type == addr->type)) ||
526 (!same_type && (tmp->type != addr->type))) &&
527 (tmp->u.a4.addr == addr->u.a4.addr))
528 return 1;
529
530 if ((tmp->proto == QETH_PROT_IPV6) &&
531 (addr->proto == QETH_PROT_IPV6) &&
532 ((same_type && (tmp->type == addr->type)) ||
533 (!same_type && (tmp->type != addr->type))) &&
534 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
535 sizeof(struct in6_addr)) == 0))
536 return 1;
537
538 }
539 return 0;
540 }
541
542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
543 struct qeth_ipaddr *addr, int ipacmd)
544 {
545 int rc;
546 struct qeth_cmd_buffer *iob;
547 struct qeth_ipa_cmd *cmd;
548
549 QETH_CARD_TEXT(card, 4, "setdelmc");
550
551 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
552 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
553 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
554 if (addr->proto == QETH_PROT_IPV6)
555 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
556 sizeof(struct in6_addr));
557 else
558 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
559
560 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
561
562 return rc;
563 }
564
565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
566 {
567 int i, j;
568 for (i = 0; i < 16; i++) {
569 j = (len) - (i * 8);
570 if (j >= 8)
571 netmask[i] = 0xff;
572 else if (j > 0)
573 netmask[i] = (u8)(0xFF00 >> j);
574 else
575 netmask[i] = 0;
576 }
577 }
578
579 static int qeth_l3_send_setdelip(struct qeth_card *card,
580 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
581 {
582 int rc;
583 struct qeth_cmd_buffer *iob;
584 struct qeth_ipa_cmd *cmd;
585 __u8 netmask[16];
586
587 QETH_CARD_TEXT(card, 4, "setdelip");
588 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
589
590 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
591 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
592 if (addr->proto == QETH_PROT_IPV6) {
593 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
594 sizeof(struct in6_addr));
595 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
596 memcpy(cmd->data.setdelip6.mask, netmask,
597 sizeof(struct in6_addr));
598 cmd->data.setdelip6.flags = flags;
599 } else {
600 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
601 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
602 cmd->data.setdelip4.flags = flags;
603 }
604
605 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
606
607 return rc;
608 }
609
610 static int qeth_l3_send_setrouting(struct qeth_card *card,
611 enum qeth_routing_types type, enum qeth_prot_versions prot)
612 {
613 int rc;
614 struct qeth_ipa_cmd *cmd;
615 struct qeth_cmd_buffer *iob;
616
617 QETH_CARD_TEXT(card, 4, "setroutg");
618 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
619 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
620 cmd->data.setrtg.type = (type);
621 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
622
623 return rc;
624 }
625
626 static void qeth_l3_correct_routing_type(struct qeth_card *card,
627 enum qeth_routing_types *type, enum qeth_prot_versions prot)
628 {
629 if (card->info.type == QETH_CARD_TYPE_IQD) {
630 switch (*type) {
631 case NO_ROUTER:
632 case PRIMARY_CONNECTOR:
633 case SECONDARY_CONNECTOR:
634 case MULTICAST_ROUTER:
635 return;
636 default:
637 goto out_inval;
638 }
639 } else {
640 switch (*type) {
641 case NO_ROUTER:
642 case PRIMARY_ROUTER:
643 case SECONDARY_ROUTER:
644 return;
645 case MULTICAST_ROUTER:
646 if (qeth_is_ipafunc_supported(card, prot,
647 IPA_OSA_MC_ROUTER))
648 return;
649 default:
650 goto out_inval;
651 }
652 }
653 out_inval:
654 *type = NO_ROUTER;
655 }
656
657 int qeth_l3_setrouting_v4(struct qeth_card *card)
658 {
659 int rc;
660
661 QETH_CARD_TEXT(card, 3, "setrtg4");
662
663 qeth_l3_correct_routing_type(card, &card->options.route4.type,
664 QETH_PROT_IPV4);
665
666 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
667 QETH_PROT_IPV4);
668 if (rc) {
669 card->options.route4.type = NO_ROUTER;
670 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
671 " on %s. Type set to 'no router'.\n", rc,
672 QETH_CARD_IFNAME(card));
673 }
674 return rc;
675 }
676
677 int qeth_l3_setrouting_v6(struct qeth_card *card)
678 {
679 int rc = 0;
680
681 QETH_CARD_TEXT(card, 3, "setrtg6");
682 #ifdef CONFIG_QETH_IPV6
683
684 if (!qeth_is_supported(card, IPA_IPV6))
685 return 0;
686 qeth_l3_correct_routing_type(card, &card->options.route6.type,
687 QETH_PROT_IPV6);
688
689 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
690 QETH_PROT_IPV6);
691 if (rc) {
692 card->options.route6.type = NO_ROUTER;
693 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
694 " on %s. Type set to 'no router'.\n", rc,
695 QETH_CARD_IFNAME(card));
696 }
697 #endif
698 return rc;
699 }
700
701 /*
702 * IP address takeover related functions
703 */
704 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
705 {
706
707 struct qeth_ipato_entry *ipatoe, *tmp;
708 unsigned long flags;
709
710 spin_lock_irqsave(&card->ip_lock, flags);
711 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
712 list_del(&ipatoe->entry);
713 kfree(ipatoe);
714 }
715 spin_unlock_irqrestore(&card->ip_lock, flags);
716 }
717
718 int qeth_l3_add_ipato_entry(struct qeth_card *card,
719 struct qeth_ipato_entry *new)
720 {
721 struct qeth_ipato_entry *ipatoe;
722 unsigned long flags;
723 int rc = 0;
724
725 QETH_CARD_TEXT(card, 2, "addipato");
726 spin_lock_irqsave(&card->ip_lock, flags);
727 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
728 if (ipatoe->proto != new->proto)
729 continue;
730 if (!memcmp(ipatoe->addr, new->addr,
731 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
732 (ipatoe->mask_bits == new->mask_bits)) {
733 rc = -EEXIST;
734 break;
735 }
736 }
737 if (!rc)
738 list_add_tail(&new->entry, &card->ipato.entries);
739
740 spin_unlock_irqrestore(&card->ip_lock, flags);
741 return rc;
742 }
743
744 void qeth_l3_del_ipato_entry(struct qeth_card *card,
745 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
746 {
747 struct qeth_ipato_entry *ipatoe, *tmp;
748 unsigned long flags;
749
750 QETH_CARD_TEXT(card, 2, "delipato");
751 spin_lock_irqsave(&card->ip_lock, flags);
752 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
753 if (ipatoe->proto != proto)
754 continue;
755 if (!memcmp(ipatoe->addr, addr,
756 (proto == QETH_PROT_IPV4)? 4:16) &&
757 (ipatoe->mask_bits == mask_bits)) {
758 list_del(&ipatoe->entry);
759 kfree(ipatoe);
760 }
761 }
762 spin_unlock_irqrestore(&card->ip_lock, flags);
763 }
764
765 /*
766 * VIPA related functions
767 */
768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
769 const u8 *addr)
770 {
771 struct qeth_ipaddr *ipaddr;
772 unsigned long flags;
773 int rc = 0;
774
775 ipaddr = qeth_l3_get_addr_buffer(proto);
776 if (ipaddr) {
777 if (proto == QETH_PROT_IPV4) {
778 QETH_CARD_TEXT(card, 2, "addvipa4");
779 memcpy(&ipaddr->u.a4.addr, addr, 4);
780 ipaddr->u.a4.mask = 0;
781 } else if (proto == QETH_PROT_IPV6) {
782 QETH_CARD_TEXT(card, 2, "addvipa6");
783 memcpy(&ipaddr->u.a6.addr, addr, 16);
784 ipaddr->u.a6.pfxlen = 0;
785 }
786 ipaddr->type = QETH_IP_TYPE_VIPA;
787 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
788 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
789 } else
790 return -ENOMEM;
791 spin_lock_irqsave(&card->ip_lock, flags);
792 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
793 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
794 rc = -EEXIST;
795 spin_unlock_irqrestore(&card->ip_lock, flags);
796 if (rc) {
797 return rc;
798 }
799 if (!qeth_l3_add_ip(card, ipaddr))
800 kfree(ipaddr);
801 qeth_l3_set_ip_addr_list(card);
802 return rc;
803 }
804
805 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
806 const u8 *addr)
807 {
808 struct qeth_ipaddr *ipaddr;
809
810 ipaddr = qeth_l3_get_addr_buffer(proto);
811 if (ipaddr) {
812 if (proto == QETH_PROT_IPV4) {
813 QETH_CARD_TEXT(card, 2, "delvipa4");
814 memcpy(&ipaddr->u.a4.addr, addr, 4);
815 ipaddr->u.a4.mask = 0;
816 } else if (proto == QETH_PROT_IPV6) {
817 QETH_CARD_TEXT(card, 2, "delvipa6");
818 memcpy(&ipaddr->u.a6.addr, addr, 16);
819 ipaddr->u.a6.pfxlen = 0;
820 }
821 ipaddr->type = QETH_IP_TYPE_VIPA;
822 } else
823 return;
824 if (!qeth_l3_delete_ip(card, ipaddr))
825 kfree(ipaddr);
826 qeth_l3_set_ip_addr_list(card);
827 }
828
829 /*
830 * proxy ARP related functions
831 */
832 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
833 const u8 *addr)
834 {
835 struct qeth_ipaddr *ipaddr;
836 unsigned long flags;
837 int rc = 0;
838
839 ipaddr = qeth_l3_get_addr_buffer(proto);
840 if (ipaddr) {
841 if (proto == QETH_PROT_IPV4) {
842 QETH_CARD_TEXT(card, 2, "addrxip4");
843 memcpy(&ipaddr->u.a4.addr, addr, 4);
844 ipaddr->u.a4.mask = 0;
845 } else if (proto == QETH_PROT_IPV6) {
846 QETH_CARD_TEXT(card, 2, "addrxip6");
847 memcpy(&ipaddr->u.a6.addr, addr, 16);
848 ipaddr->u.a6.pfxlen = 0;
849 }
850 ipaddr->type = QETH_IP_TYPE_RXIP;
851 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
852 ipaddr->del_flags = 0;
853 } else
854 return -ENOMEM;
855 spin_lock_irqsave(&card->ip_lock, flags);
856 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
857 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
858 rc = -EEXIST;
859 spin_unlock_irqrestore(&card->ip_lock, flags);
860 if (rc) {
861 return rc;
862 }
863 if (!qeth_l3_add_ip(card, ipaddr))
864 kfree(ipaddr);
865 qeth_l3_set_ip_addr_list(card);
866 return 0;
867 }
868
869 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
870 const u8 *addr)
871 {
872 struct qeth_ipaddr *ipaddr;
873
874 ipaddr = qeth_l3_get_addr_buffer(proto);
875 if (ipaddr) {
876 if (proto == QETH_PROT_IPV4) {
877 QETH_CARD_TEXT(card, 2, "addrxip4");
878 memcpy(&ipaddr->u.a4.addr, addr, 4);
879 ipaddr->u.a4.mask = 0;
880 } else if (proto == QETH_PROT_IPV6) {
881 QETH_CARD_TEXT(card, 2, "addrxip6");
882 memcpy(&ipaddr->u.a6.addr, addr, 16);
883 ipaddr->u.a6.pfxlen = 0;
884 }
885 ipaddr->type = QETH_IP_TYPE_RXIP;
886 } else
887 return;
888 if (!qeth_l3_delete_ip(card, ipaddr))
889 kfree(ipaddr);
890 qeth_l3_set_ip_addr_list(card);
891 }
892
893 static int qeth_l3_register_addr_entry(struct qeth_card *card,
894 struct qeth_ipaddr *addr)
895 {
896 char buf[50];
897 int rc = 0;
898 int cnt = 3;
899
900 if (addr->proto == QETH_PROT_IPV4) {
901 QETH_CARD_TEXT(card, 2, "setaddr4");
902 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
903 } else if (addr->proto == QETH_PROT_IPV6) {
904 QETH_CARD_TEXT(card, 2, "setaddr6");
905 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
906 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
907 } else {
908 QETH_CARD_TEXT(card, 2, "setaddr?");
909 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
910 }
911 do {
912 if (addr->is_multicast)
913 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
914 else
915 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
916 addr->set_flags);
917 if (rc)
918 QETH_CARD_TEXT(card, 2, "failed");
919 } while ((--cnt > 0) && rc);
920 if (rc) {
921 QETH_CARD_TEXT(card, 2, "FAILED");
922 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
923 dev_warn(&card->gdev->dev,
924 "Registering IP address %s failed\n", buf);
925 }
926 return rc;
927 }
928
929 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
930 struct qeth_ipaddr *addr)
931 {
932 int rc = 0;
933
934 if (addr->proto == QETH_PROT_IPV4) {
935 QETH_CARD_TEXT(card, 2, "deladdr4");
936 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
937 } else if (addr->proto == QETH_PROT_IPV6) {
938 QETH_CARD_TEXT(card, 2, "deladdr6");
939 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
940 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
941 } else {
942 QETH_CARD_TEXT(card, 2, "deladdr?");
943 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
944 }
945 if (addr->is_multicast)
946 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
947 else
948 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
949 addr->del_flags);
950 if (rc)
951 QETH_CARD_TEXT(card, 2, "failed");
952
953 return rc;
954 }
955
956 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
957 {
958 if (cast_type == RTN_MULTICAST)
959 return QETH_CAST_MULTICAST;
960 if (cast_type == RTN_BROADCAST)
961 return QETH_CAST_BROADCAST;
962 return QETH_CAST_UNICAST;
963 }
964
965 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
966 {
967 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
968 if (cast_type == RTN_MULTICAST)
969 return ct | QETH_CAST_MULTICAST;
970 if (cast_type == RTN_ANYCAST)
971 return ct | QETH_CAST_ANYCAST;
972 if (cast_type == RTN_BROADCAST)
973 return ct | QETH_CAST_BROADCAST;
974 return ct | QETH_CAST_UNICAST;
975 }
976
977 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
978 __u32 mode)
979 {
980 int rc;
981 struct qeth_cmd_buffer *iob;
982 struct qeth_ipa_cmd *cmd;
983
984 QETH_CARD_TEXT(card, 4, "adpmode");
985
986 iob = qeth_get_adapter_cmd(card, command,
987 sizeof(struct qeth_ipacmd_setadpparms));
988 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
989 cmd->data.setadapterparms.data.mode = mode;
990 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
991 NULL);
992 return rc;
993 }
994
995 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
996 {
997 int rc;
998
999 QETH_CARD_TEXT(card, 4, "adphstr");
1000
1001 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1002 rc = qeth_l3_send_setadp_mode(card,
1003 IPA_SETADP_SET_BROADCAST_MODE,
1004 card->options.broadcast_mode);
1005 if (rc)
1006 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1007 "device %s: x%x\n",
1008 CARD_BUS_ID(card), rc);
1009 rc = qeth_l3_send_setadp_mode(card,
1010 IPA_SETADP_ALTER_MAC_ADDRESS,
1011 card->options.macaddr_mode);
1012 if (rc)
1013 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1014 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1015 return rc;
1016 }
1017 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1018 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1019 "to set broadcast mode, using ALLRINGS "
1020 "on device %s:\n", CARD_BUS_ID(card));
1021 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1022 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1023 "to set macaddr mode, using NONCANONICAL "
1024 "on device %s:\n", CARD_BUS_ID(card));
1025 return 0;
1026 }
1027
1028 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1029 {
1030 int rc;
1031
1032 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1033
1034 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1035 dev_info(&card->gdev->dev,
1036 "set adapter parameters not supported.\n");
1037 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1038 return 0;
1039 }
1040 rc = qeth_query_setadapterparms(card);
1041 if (rc) {
1042 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1043 "0x%x\n", dev_name(&card->gdev->dev), rc);
1044 return rc;
1045 }
1046 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1047 rc = qeth_setadpparms_change_macaddr(card);
1048 if (rc)
1049 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1050 " address failed\n");
1051 }
1052
1053 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1054 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1055 rc = qeth_l3_setadapter_hstr(card);
1056
1057 return rc;
1058 }
1059
1060 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1061 struct qeth_reply *reply, unsigned long data)
1062 {
1063 struct qeth_ipa_cmd *cmd;
1064
1065 QETH_CARD_TEXT(card, 4, "defadpcb");
1066
1067 cmd = (struct qeth_ipa_cmd *) data;
1068 if (cmd->hdr.return_code == 0) {
1069 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1070 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1071 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1072 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1073 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1074 }
1075 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1076 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1077 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1078 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1079 }
1080 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1081 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1082 card->info.tx_csum_mask =
1083 cmd->data.setassparms.data.flags_32bit;
1084 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1085 }
1086
1087 return 0;
1088 }
1089
1090 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1091 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1092 __u16 len, enum qeth_prot_versions prot)
1093 {
1094 struct qeth_cmd_buffer *iob;
1095 struct qeth_ipa_cmd *cmd;
1096
1097 QETH_CARD_TEXT(card, 4, "getasscm");
1098 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1099
1100 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1101 cmd->data.setassparms.hdr.assist_no = ipa_func;
1102 cmd->data.setassparms.hdr.length = 8 + len;
1103 cmd->data.setassparms.hdr.command_code = cmd_code;
1104 cmd->data.setassparms.hdr.return_code = 0;
1105 cmd->data.setassparms.hdr.seq_no = 0;
1106
1107 return iob;
1108 }
1109
1110 static int qeth_l3_send_setassparms(struct qeth_card *card,
1111 struct qeth_cmd_buffer *iob, __u16 len, long data,
1112 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1113 unsigned long),
1114 void *reply_param)
1115 {
1116 int rc;
1117 struct qeth_ipa_cmd *cmd;
1118
1119 QETH_CARD_TEXT(card, 4, "sendassp");
1120
1121 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1122 if (len <= sizeof(__u32))
1123 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1124 else /* (len > sizeof(__u32)) */
1125 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1126
1127 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1128 return rc;
1129 }
1130
1131 #ifdef CONFIG_QETH_IPV6
1132 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1133 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1134 {
1135 int rc;
1136 struct qeth_cmd_buffer *iob;
1137
1138 QETH_CARD_TEXT(card, 4, "simassp6");
1139 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1140 0, QETH_PROT_IPV6);
1141 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1142 qeth_l3_default_setassparms_cb, NULL);
1143 return rc;
1144 }
1145 #endif
1146
1147 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1148 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1149 {
1150 int rc;
1151 int length = 0;
1152 struct qeth_cmd_buffer *iob;
1153
1154 QETH_CARD_TEXT(card, 4, "simassp4");
1155 if (data)
1156 length = sizeof(__u32);
1157 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1158 length, QETH_PROT_IPV4);
1159 rc = qeth_l3_send_setassparms(card, iob, length, data,
1160 qeth_l3_default_setassparms_cb, NULL);
1161 return rc;
1162 }
1163
1164 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1165 {
1166 int rc;
1167
1168 QETH_CARD_TEXT(card, 3, "ipaarp");
1169
1170 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1171 dev_info(&card->gdev->dev,
1172 "ARP processing not supported on %s!\n",
1173 QETH_CARD_IFNAME(card));
1174 return 0;
1175 }
1176 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1177 IPA_CMD_ASS_START, 0);
1178 if (rc) {
1179 dev_warn(&card->gdev->dev,
1180 "Starting ARP processing support for %s failed\n",
1181 QETH_CARD_IFNAME(card));
1182 }
1183 return rc;
1184 }
1185
1186 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1187 {
1188 int rc;
1189
1190 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1191
1192 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1193 dev_info(&card->gdev->dev,
1194 "Hardware IP fragmentation not supported on %s\n",
1195 QETH_CARD_IFNAME(card));
1196 return -EOPNOTSUPP;
1197 }
1198
1199 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1200 IPA_CMD_ASS_START, 0);
1201 if (rc) {
1202 dev_warn(&card->gdev->dev,
1203 "Starting IP fragmentation support for %s failed\n",
1204 QETH_CARD_IFNAME(card));
1205 } else
1206 dev_info(&card->gdev->dev,
1207 "Hardware IP fragmentation enabled \n");
1208 return rc;
1209 }
1210
1211 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1212 {
1213 int rc;
1214
1215 QETH_CARD_TEXT(card, 3, "stsrcmac");
1216
1217 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1218 dev_info(&card->gdev->dev,
1219 "Inbound source MAC-address not supported on %s\n",
1220 QETH_CARD_IFNAME(card));
1221 return -EOPNOTSUPP;
1222 }
1223
1224 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1225 IPA_CMD_ASS_START, 0);
1226 if (rc)
1227 dev_warn(&card->gdev->dev,
1228 "Starting source MAC-address support for %s failed\n",
1229 QETH_CARD_IFNAME(card));
1230 return rc;
1231 }
1232
1233 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1234 {
1235 int rc = 0;
1236
1237 QETH_CARD_TEXT(card, 3, "strtvlan");
1238
1239 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1240 dev_info(&card->gdev->dev,
1241 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1242 return -EOPNOTSUPP;
1243 }
1244
1245 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1246 IPA_CMD_ASS_START, 0);
1247 if (rc) {
1248 dev_warn(&card->gdev->dev,
1249 "Starting VLAN support for %s failed\n",
1250 QETH_CARD_IFNAME(card));
1251 } else {
1252 dev_info(&card->gdev->dev, "VLAN enabled\n");
1253 }
1254 return rc;
1255 }
1256
1257 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1258 {
1259 int rc;
1260
1261 QETH_CARD_TEXT(card, 3, "stmcast");
1262
1263 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1264 dev_info(&card->gdev->dev,
1265 "Multicast not supported on %s\n",
1266 QETH_CARD_IFNAME(card));
1267 return -EOPNOTSUPP;
1268 }
1269
1270 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1271 IPA_CMD_ASS_START, 0);
1272 if (rc) {
1273 dev_warn(&card->gdev->dev,
1274 "Starting multicast support for %s failed\n",
1275 QETH_CARD_IFNAME(card));
1276 } else {
1277 dev_info(&card->gdev->dev, "Multicast enabled\n");
1278 card->dev->flags |= IFF_MULTICAST;
1279 }
1280 return rc;
1281 }
1282
1283 #ifdef CONFIG_QETH_IPV6
1284 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1285 {
1286 int rc;
1287
1288 QETH_CARD_TEXT(card, 3, "softipv6");
1289
1290 if (card->info.type == QETH_CARD_TYPE_IQD)
1291 goto out;
1292
1293 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1294 if (rc) {
1295 dev_err(&card->gdev->dev,
1296 "Activating IPv6 support for %s failed\n",
1297 QETH_CARD_IFNAME(card));
1298 return rc;
1299 }
1300 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1301 IPA_CMD_ASS_START, 3);
1302 if (rc) {
1303 dev_err(&card->gdev->dev,
1304 "Activating IPv6 support for %s failed\n",
1305 QETH_CARD_IFNAME(card));
1306 return rc;
1307 }
1308 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1309 IPA_CMD_ASS_START);
1310 if (rc) {
1311 dev_err(&card->gdev->dev,
1312 "Activating IPv6 support for %s failed\n",
1313 QETH_CARD_IFNAME(card));
1314 return rc;
1315 }
1316 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1317 IPA_CMD_ASS_START);
1318 if (rc) {
1319 dev_warn(&card->gdev->dev,
1320 "Enabling the passthrough mode for %s failed\n",
1321 QETH_CARD_IFNAME(card));
1322 return rc;
1323 }
1324 out:
1325 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1326 return 0;
1327 }
1328 #endif
1329
1330 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1331 {
1332 int rc = 0;
1333
1334 QETH_CARD_TEXT(card, 3, "strtipv6");
1335
1336 if (!qeth_is_supported(card, IPA_IPV6)) {
1337 dev_info(&card->gdev->dev,
1338 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1339 return 0;
1340 }
1341 #ifdef CONFIG_QETH_IPV6
1342 rc = qeth_l3_softsetup_ipv6(card);
1343 #endif
1344 return rc ;
1345 }
1346
1347 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1348 {
1349 int rc;
1350
1351 QETH_CARD_TEXT(card, 3, "stbrdcst");
1352 card->info.broadcast_capable = 0;
1353 if (!qeth_is_supported(card, IPA_FILTERING)) {
1354 dev_info(&card->gdev->dev,
1355 "Broadcast not supported on %s\n",
1356 QETH_CARD_IFNAME(card));
1357 rc = -EOPNOTSUPP;
1358 goto out;
1359 }
1360 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1361 IPA_CMD_ASS_START, 0);
1362 if (rc) {
1363 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1364 "%s failed\n", QETH_CARD_IFNAME(card));
1365 goto out;
1366 }
1367
1368 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1369 IPA_CMD_ASS_CONFIGURE, 1);
1370 if (rc) {
1371 dev_warn(&card->gdev->dev,
1372 "Setting up broadcast filtering for %s failed\n",
1373 QETH_CARD_IFNAME(card));
1374 goto out;
1375 }
1376 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1377 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1378 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1379 IPA_CMD_ASS_ENABLE, 1);
1380 if (rc) {
1381 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1382 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1383 goto out;
1384 }
1385 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1386 out:
1387 if (card->info.broadcast_capable)
1388 card->dev->flags |= IFF_BROADCAST;
1389 else
1390 card->dev->flags &= ~IFF_BROADCAST;
1391 return rc;
1392 }
1393
1394 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1395 {
1396 int rc;
1397
1398 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1399 IPA_CMD_ASS_START, 0);
1400 if (rc) {
1401 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1402 "failed, using SW checksumming\n",
1403 QETH_CARD_IFNAME(card));
1404 return rc;
1405 }
1406 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1407 IPA_CMD_ASS_ENABLE,
1408 card->info.csum_mask);
1409 if (rc) {
1410 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1411 "failed, using SW checksumming\n",
1412 QETH_CARD_IFNAME(card));
1413 return rc;
1414 }
1415 return 0;
1416 }
1417
1418 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1419 {
1420 int rc = 0;
1421
1422 if (on) {
1423 rc = qeth_l3_send_checksum_command(card);
1424 if (rc)
1425 return -EIO;
1426 dev_info(&card->gdev->dev,
1427 "HW Checksumming (inbound) enabled\n");
1428 } else {
1429 rc = qeth_l3_send_simple_setassparms(card,
1430 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1431 if (rc)
1432 return -EIO;
1433 }
1434
1435 return 0;
1436 }
1437
1438 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1439 {
1440 QETH_CARD_TEXT(card, 3, "strtcsum");
1441
1442 if (card->dev->features & NETIF_F_RXCSUM) {
1443 rtnl_lock();
1444 /* force set_features call */
1445 card->dev->features &= ~NETIF_F_RXCSUM;
1446 netdev_update_features(card->dev);
1447 rtnl_unlock();
1448 }
1449 return 0;
1450 }
1451
1452 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1453 {
1454 int rc = 0;
1455
1456 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1457 return rc;
1458 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1459 IPA_CMD_ASS_START, 0);
1460 if (rc)
1461 goto err_out;
1462 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1463 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1464 if (rc)
1465 goto err_out;
1466 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1467 return rc;
1468 err_out:
1469 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1470 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1471 return rc;
1472 }
1473
1474 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1475 {
1476 int rc;
1477
1478 QETH_CARD_TEXT(card, 3, "sttso");
1479
1480 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1481 dev_info(&card->gdev->dev,
1482 "Outbound TSO not supported on %s\n",
1483 QETH_CARD_IFNAME(card));
1484 rc = -EOPNOTSUPP;
1485 } else {
1486 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1487 IPA_CMD_ASS_START, 0);
1488 if (rc)
1489 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1490 "segmentation offload for %s failed\n",
1491 QETH_CARD_IFNAME(card));
1492 else
1493 dev_info(&card->gdev->dev,
1494 "Outbound TSO enabled\n");
1495 }
1496 if (rc)
1497 card->dev->features &= ~NETIF_F_TSO;
1498 return rc;
1499 }
1500
1501 static int qeth_l3_start_ipassists(struct qeth_card *card)
1502 {
1503 QETH_CARD_TEXT(card, 3, "strtipas");
1504
1505 qeth_set_access_ctrl_online(card); /* go on*/
1506 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1507 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1508 qeth_l3_start_ipa_source_mac(card); /* go on*/
1509 qeth_l3_start_ipa_vlan(card); /* go on*/
1510 qeth_l3_start_ipa_multicast(card); /* go on*/
1511 qeth_l3_start_ipa_ipv6(card); /* go on*/
1512 qeth_l3_start_ipa_broadcast(card); /* go on*/
1513 qeth_l3_start_ipa_checksum(card); /* go on*/
1514 qeth_l3_start_ipa_tx_checksum(card);
1515 qeth_l3_start_ipa_tso(card); /* go on*/
1516 return 0;
1517 }
1518
1519 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1520 struct qeth_reply *reply, unsigned long data)
1521 {
1522 struct qeth_ipa_cmd *cmd;
1523
1524 cmd = (struct qeth_ipa_cmd *) data;
1525 if (cmd->hdr.return_code == 0)
1526 memcpy(card->dev->dev_addr,
1527 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1528 else
1529 random_ether_addr(card->dev->dev_addr);
1530
1531 return 0;
1532 }
1533
1534 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1535 {
1536 int rc = 0;
1537 struct qeth_cmd_buffer *iob;
1538 struct qeth_ipa_cmd *cmd;
1539
1540 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1541
1542 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1543 QETH_PROT_IPV6);
1544 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1545 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1546 card->info.unique_id;
1547
1548 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1549 NULL);
1550 return rc;
1551 }
1552
1553 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1554 struct qeth_reply *reply, unsigned long data)
1555 {
1556 struct qeth_ipa_cmd *cmd;
1557
1558 cmd = (struct qeth_ipa_cmd *) data;
1559 if (cmd->hdr.return_code == 0)
1560 card->info.unique_id = *((__u16 *)
1561 &cmd->data.create_destroy_addr.unique_id[6]);
1562 else {
1563 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1564 UNIQUE_ID_NOT_BY_CARD;
1565 dev_warn(&card->gdev->dev, "The network adapter failed to "
1566 "generate a unique ID\n");
1567 }
1568 return 0;
1569 }
1570
1571 static int qeth_l3_get_unique_id(struct qeth_card *card)
1572 {
1573 int rc = 0;
1574 struct qeth_cmd_buffer *iob;
1575 struct qeth_ipa_cmd *cmd;
1576
1577 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1578
1579 if (!qeth_is_supported(card, IPA_IPV6)) {
1580 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1581 UNIQUE_ID_NOT_BY_CARD;
1582 return 0;
1583 }
1584
1585 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1586 QETH_PROT_IPV6);
1587 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1588 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1589 card->info.unique_id;
1590
1591 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1592 return rc;
1593 }
1594
1595 static int
1596 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1597 unsigned long data)
1598 {
1599 struct qeth_ipa_cmd *cmd;
1600 __u16 rc;
1601
1602 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1603
1604 cmd = (struct qeth_ipa_cmd *)data;
1605 rc = cmd->hdr.return_code;
1606 if (rc)
1607 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1608 switch (cmd->data.diagass.action) {
1609 case QETH_DIAGS_CMD_TRACE_QUERY:
1610 break;
1611 case QETH_DIAGS_CMD_TRACE_DISABLE:
1612 switch (rc) {
1613 case 0:
1614 case IPA_RC_INVALID_SUBCMD:
1615 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1616 dev_info(&card->gdev->dev, "The HiperSockets network "
1617 "traffic analyzer is deactivated\n");
1618 break;
1619 default:
1620 break;
1621 }
1622 break;
1623 case QETH_DIAGS_CMD_TRACE_ENABLE:
1624 switch (rc) {
1625 case 0:
1626 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1627 dev_info(&card->gdev->dev, "The HiperSockets network "
1628 "traffic analyzer is activated\n");
1629 break;
1630 case IPA_RC_HARDWARE_AUTH_ERROR:
1631 dev_warn(&card->gdev->dev, "The device is not "
1632 "authorized to run as a HiperSockets network "
1633 "traffic analyzer\n");
1634 break;
1635 case IPA_RC_TRACE_ALREADY_ACTIVE:
1636 dev_warn(&card->gdev->dev, "A HiperSockets "
1637 "network traffic analyzer is already "
1638 "active in the HiperSockets LAN\n");
1639 break;
1640 default:
1641 break;
1642 }
1643 break;
1644 default:
1645 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1646 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1647 }
1648
1649 return 0;
1650 }
1651
1652 static int
1653 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1654 {
1655 struct qeth_cmd_buffer *iob;
1656 struct qeth_ipa_cmd *cmd;
1657
1658 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1659
1660 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1661 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1662 cmd->data.diagass.subcmd_len = 16;
1663 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1664 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1665 cmd->data.diagass.action = diags_cmd;
1666 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1667 }
1668
1669 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1670 struct net_device *dev)
1671 {
1672 if (dev->type == ARPHRD_IEEE802_TR)
1673 ip_tr_mc_map(ipm, mac);
1674 else
1675 ip_eth_mc_map(ipm, mac);
1676 }
1677
1678 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1679 {
1680 struct qeth_ipaddr *ipm;
1681 struct ip_mc_list *im4;
1682 char buf[MAX_ADDR_LEN];
1683
1684 QETH_CARD_TEXT(card, 4, "addmc");
1685 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1686 im4 = rcu_dereference(im4->next_rcu)) {
1687 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1688 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1689 if (!ipm)
1690 continue;
1691 ipm->u.a4.addr = im4->multiaddr;
1692 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1693 ipm->is_multicast = 1;
1694 if (!qeth_l3_add_ip(card, ipm))
1695 kfree(ipm);
1696 }
1697 }
1698
1699 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1700 {
1701 struct in_device *in_dev;
1702 u16 vid;
1703
1704 QETH_CARD_TEXT(card, 4, "addmcvl");
1705 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1706 return;
1707
1708 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1709 struct net_device *netdev;
1710
1711 rcu_read_lock();
1712 netdev = __vlan_find_dev_deep(card->dev, vid);
1713 rcu_read_unlock();
1714 if (netdev == NULL ||
1715 !(netdev->flags & IFF_UP))
1716 continue;
1717 in_dev = in_dev_get(netdev);
1718 if (!in_dev)
1719 continue;
1720 rcu_read_lock();
1721 qeth_l3_add_mc(card, in_dev);
1722 rcu_read_unlock();
1723 in_dev_put(in_dev);
1724 }
1725 }
1726
1727 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1728 {
1729 struct in_device *in4_dev;
1730
1731 QETH_CARD_TEXT(card, 4, "chkmcv4");
1732 in4_dev = in_dev_get(card->dev);
1733 if (in4_dev == NULL)
1734 return;
1735 rcu_read_lock();
1736 qeth_l3_add_mc(card, in4_dev);
1737 qeth_l3_add_vlan_mc(card);
1738 rcu_read_unlock();
1739 in_dev_put(in4_dev);
1740 }
1741
1742 #ifdef CONFIG_QETH_IPV6
1743 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1744 {
1745 struct qeth_ipaddr *ipm;
1746 struct ifmcaddr6 *im6;
1747 char buf[MAX_ADDR_LEN];
1748
1749 QETH_CARD_TEXT(card, 4, "addmc6");
1750 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1751 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1752 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1753 if (!ipm)
1754 continue;
1755 ipm->is_multicast = 1;
1756 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1757 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1758 sizeof(struct in6_addr));
1759 if (!qeth_l3_add_ip(card, ipm))
1760 kfree(ipm);
1761 }
1762 }
1763
1764 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1765 {
1766 struct inet6_dev *in_dev;
1767 u16 vid;
1768
1769 QETH_CARD_TEXT(card, 4, "admc6vl");
1770 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1771 return;
1772
1773 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1774 struct net_device *netdev;
1775
1776 netdev = __vlan_find_dev_deep(card->dev, vid);
1777 if (netdev == NULL ||
1778 !(netdev->flags & IFF_UP))
1779 continue;
1780 in_dev = in6_dev_get(netdev);
1781 if (!in_dev)
1782 continue;
1783 read_lock_bh(&in_dev->lock);
1784 qeth_l3_add_mc6(card, in_dev);
1785 read_unlock_bh(&in_dev->lock);
1786 in6_dev_put(in_dev);
1787 }
1788 }
1789
1790 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1791 {
1792 struct inet6_dev *in6_dev;
1793
1794 QETH_CARD_TEXT(card, 4, "chkmcv6");
1795 if (!qeth_is_supported(card, IPA_IPV6))
1796 return ;
1797 in6_dev = in6_dev_get(card->dev);
1798 if (in6_dev == NULL)
1799 return;
1800 read_lock_bh(&in6_dev->lock);
1801 qeth_l3_add_mc6(card, in6_dev);
1802 qeth_l3_add_vlan_mc6(card);
1803 read_unlock_bh(&in6_dev->lock);
1804 in6_dev_put(in6_dev);
1805 }
1806 #endif /* CONFIG_QETH_IPV6 */
1807
1808 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1809 unsigned short vid)
1810 {
1811 struct in_device *in_dev;
1812 struct in_ifaddr *ifa;
1813 struct qeth_ipaddr *addr;
1814 struct net_device *netdev;
1815
1816 QETH_CARD_TEXT(card, 4, "frvaddr4");
1817
1818 netdev = __vlan_find_dev_deep(card->dev, vid);
1819 in_dev = in_dev_get(netdev);
1820 if (!in_dev)
1821 return;
1822 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1823 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1824 if (addr) {
1825 addr->u.a4.addr = ifa->ifa_address;
1826 addr->u.a4.mask = ifa->ifa_mask;
1827 addr->type = QETH_IP_TYPE_NORMAL;
1828 if (!qeth_l3_delete_ip(card, addr))
1829 kfree(addr);
1830 }
1831 }
1832 in_dev_put(in_dev);
1833 }
1834
1835 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1836 unsigned short vid)
1837 {
1838 #ifdef CONFIG_QETH_IPV6
1839 struct inet6_dev *in6_dev;
1840 struct inet6_ifaddr *ifa;
1841 struct qeth_ipaddr *addr;
1842 struct net_device *netdev;
1843
1844 QETH_CARD_TEXT(card, 4, "frvaddr6");
1845
1846 netdev = __vlan_find_dev_deep(card->dev, vid);
1847 in6_dev = in6_dev_get(netdev);
1848 if (!in6_dev)
1849 return;
1850 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1851 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1852 if (addr) {
1853 memcpy(&addr->u.a6.addr, &ifa->addr,
1854 sizeof(struct in6_addr));
1855 addr->u.a6.pfxlen = ifa->prefix_len;
1856 addr->type = QETH_IP_TYPE_NORMAL;
1857 if (!qeth_l3_delete_ip(card, addr))
1858 kfree(addr);
1859 }
1860 }
1861 in6_dev_put(in6_dev);
1862 #endif /* CONFIG_QETH_IPV6 */
1863 }
1864
1865 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1866 unsigned short vid)
1867 {
1868 qeth_l3_free_vlan_addresses4(card, vid);
1869 qeth_l3_free_vlan_addresses6(card, vid);
1870 }
1871
1872 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1873 {
1874 struct qeth_card *card = dev->ml_priv;
1875
1876 set_bit(vid, card->active_vlans);
1877 return;
1878 }
1879
1880 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1881 {
1882 struct qeth_card *card = dev->ml_priv;
1883 unsigned long flags;
1884
1885 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1886 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1887 QETH_CARD_TEXT(card, 3, "kidREC");
1888 return;
1889 }
1890 spin_lock_irqsave(&card->vlanlock, flags);
1891 /* unregister IP addresses of vlan device */
1892 qeth_l3_free_vlan_addresses(card, vid);
1893 clear_bit(vid, card->active_vlans);
1894 spin_unlock_irqrestore(&card->vlanlock, flags);
1895 qeth_l3_set_multicast_list(card->dev);
1896 }
1897
1898 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1899 struct sk_buff *skb, struct qeth_hdr *hdr,
1900 unsigned short *vlan_id)
1901 {
1902 __be16 prot;
1903 struct iphdr *ip_hdr;
1904 unsigned char tg_addr[MAX_ADDR_LEN];
1905 int is_vlan = 0;
1906
1907 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1908 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1909 ETH_P_IP);
1910 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1911 case QETH_CAST_MULTICAST:
1912 switch (prot) {
1913 #ifdef CONFIG_QETH_IPV6
1914 case __constant_htons(ETH_P_IPV6):
1915 ndisc_mc_map((struct in6_addr *)
1916 skb->data + 24,
1917 tg_addr, card->dev, 0);
1918 break;
1919 #endif
1920 case __constant_htons(ETH_P_IP):
1921 ip_hdr = (struct iphdr *)skb->data;
1922 (card->dev->type == ARPHRD_IEEE802_TR) ?
1923 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1924 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1925 break;
1926 default:
1927 memcpy(tg_addr, card->dev->broadcast,
1928 card->dev->addr_len);
1929 }
1930 card->stats.multicast++;
1931 skb->pkt_type = PACKET_MULTICAST;
1932 break;
1933 case QETH_CAST_BROADCAST:
1934 memcpy(tg_addr, card->dev->broadcast,
1935 card->dev->addr_len);
1936 card->stats.multicast++;
1937 skb->pkt_type = PACKET_BROADCAST;
1938 break;
1939 case QETH_CAST_UNICAST:
1940 case QETH_CAST_ANYCAST:
1941 case QETH_CAST_NOCAST:
1942 default:
1943 if (card->options.sniffer)
1944 skb->pkt_type = PACKET_OTHERHOST;
1945 else
1946 skb->pkt_type = PACKET_HOST;
1947 memcpy(tg_addr, card->dev->dev_addr,
1948 card->dev->addr_len);
1949 }
1950 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1951 card->dev->header_ops->create(skb, card->dev, prot,
1952 tg_addr, &hdr->hdr.l3.dest_addr[2],
1953 card->dev->addr_len);
1954 else
1955 card->dev->header_ops->create(skb, card->dev, prot,
1956 tg_addr, "FAKELL", card->dev->addr_len);
1957 }
1958
1959 #ifdef CONFIG_TR
1960 if (card->dev->type == ARPHRD_IEEE802_TR)
1961 skb->protocol = tr_type_trans(skb, card->dev);
1962 else
1963 #endif
1964 skb->protocol = eth_type_trans(skb, card->dev);
1965
1966 if (hdr->hdr.l3.ext_flags &
1967 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1968 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1969 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1970 is_vlan = 1;
1971 }
1972
1973 if (card->dev->features & NETIF_F_RXCSUM) {
1974 if ((hdr->hdr.l3.ext_flags &
1975 (QETH_HDR_EXT_CSUM_HDR_REQ |
1976 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1977 (QETH_HDR_EXT_CSUM_HDR_REQ |
1978 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1979 skb->ip_summed = CHECKSUM_UNNECESSARY;
1980 else
1981 skb->ip_summed = CHECKSUM_NONE;
1982 } else
1983 skb->ip_summed = CHECKSUM_NONE;
1984
1985 return is_vlan;
1986 }
1987
1988 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1989 int budget, int *done)
1990 {
1991 int work_done = 0;
1992 struct sk_buff *skb;
1993 struct qeth_hdr *hdr;
1994 __u16 vlan_tag = 0;
1995 int is_vlan;
1996 unsigned int len;
1997 __u16 magic;
1998
1999 *done = 0;
2000 BUG_ON(!budget);
2001 while (budget) {
2002 skb = qeth_core_get_next_skb(card,
2003 &card->qdio.in_q->bufs[card->rx.b_index],
2004 &card->rx.b_element, &card->rx.e_offset, &hdr);
2005 if (!skb) {
2006 *done = 1;
2007 break;
2008 }
2009 skb->dev = card->dev;
2010 switch (hdr->hdr.l3.id) {
2011 case QETH_HEADER_TYPE_LAYER3:
2012 magic = *(__u16 *)skb->data;
2013 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2014 (magic == ETH_P_AF_IUCV)) {
2015 skb->protocol = ETH_P_AF_IUCV;
2016 skb->pkt_type = PACKET_HOST;
2017 skb->mac_header = NET_SKB_PAD;
2018 skb->dev = card->dev;
2019 len = skb->len;
2020 card->dev->header_ops->create(skb, card->dev, 0,
2021 card->dev->dev_addr, "FAKELL",
2022 card->dev->addr_len);
2023 netif_receive_skb(skb);
2024 } else {
2025 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2026 &vlan_tag);
2027 len = skb->len;
2028 if (is_vlan && !card->options.sniffer)
2029 __vlan_hwaccel_put_tag(skb, vlan_tag);
2030 napi_gro_receive(&card->napi, skb);
2031 }
2032 break;
2033 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2034 skb->pkt_type = PACKET_HOST;
2035 skb->protocol = eth_type_trans(skb, skb->dev);
2036 len = skb->len;
2037 netif_receive_skb(skb);
2038 break;
2039 default:
2040 dev_kfree_skb_any(skb);
2041 QETH_CARD_TEXT(card, 3, "inbunkno");
2042 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2043 continue;
2044 }
2045 work_done++;
2046 budget--;
2047 card->stats.rx_packets++;
2048 card->stats.rx_bytes += len;
2049 }
2050 return work_done;
2051 }
2052
2053 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2054 {
2055 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2056 int work_done = 0;
2057 struct qeth_qdio_buffer *buffer;
2058 int done;
2059 int new_budget = budget;
2060
2061 if (card->options.performance_stats) {
2062 card->perf_stats.inbound_cnt++;
2063 card->perf_stats.inbound_start_time = qeth_get_micros();
2064 }
2065
2066 while (1) {
2067 if (!card->rx.b_count) {
2068 card->rx.qdio_err = 0;
2069 card->rx.b_count = qdio_get_next_buffers(
2070 card->data.ccwdev, 0, &card->rx.b_index,
2071 &card->rx.qdio_err);
2072 if (card->rx.b_count <= 0) {
2073 card->rx.b_count = 0;
2074 break;
2075 }
2076 card->rx.b_element =
2077 &card->qdio.in_q->bufs[card->rx.b_index]
2078 .buffer->element[0];
2079 card->rx.e_offset = 0;
2080 }
2081
2082 while (card->rx.b_count) {
2083 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2084 if (!(card->rx.qdio_err &&
2085 qeth_check_qdio_errors(card, buffer->buffer,
2086 card->rx.qdio_err, "qinerr")))
2087 work_done += qeth_l3_process_inbound_buffer(
2088 card, new_budget, &done);
2089 else
2090 done = 1;
2091
2092 if (done) {
2093 if (card->options.performance_stats)
2094 card->perf_stats.bufs_rec++;
2095 qeth_put_buffer_pool_entry(card,
2096 buffer->pool_entry);
2097 qeth_queue_input_buffer(card, card->rx.b_index);
2098 card->rx.b_count--;
2099 if (card->rx.b_count) {
2100 card->rx.b_index =
2101 (card->rx.b_index + 1) %
2102 QDIO_MAX_BUFFERS_PER_Q;
2103 card->rx.b_element =
2104 &card->qdio.in_q
2105 ->bufs[card->rx.b_index]
2106 .buffer->element[0];
2107 card->rx.e_offset = 0;
2108 }
2109 }
2110
2111 if (work_done >= budget)
2112 goto out;
2113 else
2114 new_budget = budget - work_done;
2115 }
2116 }
2117
2118 napi_complete(napi);
2119 if (qdio_start_irq(card->data.ccwdev, 0))
2120 napi_schedule(&card->napi);
2121 out:
2122 if (card->options.performance_stats)
2123 card->perf_stats.inbound_time += qeth_get_micros() -
2124 card->perf_stats.inbound_start_time;
2125 return work_done;
2126 }
2127
2128 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2129 struct qeth_card *card)
2130 {
2131 int rc = 0;
2132 u16 vid;
2133
2134 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2135 struct net_device *netdev;
2136
2137 rcu_read_lock();
2138 netdev = __vlan_find_dev_deep(dev, vid);
2139 rcu_read_unlock();
2140 if (netdev == dev) {
2141 rc = QETH_VLAN_CARD;
2142 break;
2143 }
2144 }
2145
2146 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2147 return 0;
2148
2149 return rc;
2150 }
2151
2152 static int qeth_l3_verify_dev(struct net_device *dev)
2153 {
2154 struct qeth_card *card;
2155 unsigned long flags;
2156 int rc = 0;
2157
2158 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2159 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2160 if (card->dev == dev) {
2161 rc = QETH_REAL_CARD;
2162 break;
2163 }
2164 rc = qeth_l3_verify_vlan_dev(dev, card);
2165 if (rc)
2166 break;
2167 }
2168 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2169
2170 return rc;
2171 }
2172
2173 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2174 {
2175 struct qeth_card *card = NULL;
2176 int rc;
2177
2178 rc = qeth_l3_verify_dev(dev);
2179 if (rc == QETH_REAL_CARD)
2180 card = dev->ml_priv;
2181 else if (rc == QETH_VLAN_CARD)
2182 card = vlan_dev_real_dev(dev)->ml_priv;
2183 if (card && card->options.layer2)
2184 card = NULL;
2185 if (card)
2186 QETH_CARD_TEXT_(card, 4, "%d", rc);
2187 return card ;
2188 }
2189
2190 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2191 {
2192 int rc = 0;
2193
2194 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2195 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2196
2197 qeth_set_allowed_threads(card, 0, 1);
2198 if (card->options.sniffer &&
2199 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2200 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2201 if (card->read.state == CH_STATE_UP &&
2202 card->write.state == CH_STATE_UP &&
2203 (card->state == CARD_STATE_UP)) {
2204 if (recovery_mode)
2205 qeth_l3_stop(card->dev);
2206 else {
2207 rtnl_lock();
2208 dev_close(card->dev);
2209 rtnl_unlock();
2210 }
2211 card->state = CARD_STATE_SOFTSETUP;
2212 }
2213 if (card->state == CARD_STATE_SOFTSETUP) {
2214 qeth_l3_clear_ip_list(card, 1);
2215 qeth_clear_ipacmd_list(card);
2216 card->state = CARD_STATE_HARDSETUP;
2217 }
2218 if (card->state == CARD_STATE_HARDSETUP) {
2219 qeth_qdio_clear_card(card, 0);
2220 qeth_clear_qdio_buffers(card);
2221 qeth_clear_working_pool_list(card);
2222 card->state = CARD_STATE_DOWN;
2223 }
2224 if (card->state == CARD_STATE_DOWN) {
2225 qeth_clear_cmd_buffers(&card->read);
2226 qeth_clear_cmd_buffers(&card->write);
2227 }
2228 return rc;
2229 }
2230
2231 /*
2232 * test for and Switch promiscuous mode (on or off)
2233 * either for guestlan or HiperSocket Sniffer
2234 */
2235 static void
2236 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2237 {
2238 struct net_device *dev = card->dev;
2239
2240 if (((dev->flags & IFF_PROMISC) &&
2241 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2242 (!(dev->flags & IFF_PROMISC) &&
2243 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2244 return;
2245
2246 if (card->info.guestlan) { /* Guestlan trace */
2247 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2248 qeth_setadp_promisc_mode(card);
2249 } else if (card->options.sniffer && /* HiperSockets trace */
2250 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2251 if (dev->flags & IFF_PROMISC) {
2252 QETH_CARD_TEXT(card, 3, "+promisc");
2253 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2254 } else {
2255 QETH_CARD_TEXT(card, 3, "-promisc");
2256 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2257 }
2258 }
2259 }
2260
2261 static void qeth_l3_set_multicast_list(struct net_device *dev)
2262 {
2263 struct qeth_card *card = dev->ml_priv;
2264
2265 QETH_CARD_TEXT(card, 3, "setmulti");
2266 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2267 (card->state != CARD_STATE_UP))
2268 return;
2269 if (!card->options.sniffer) {
2270 qeth_l3_delete_mc_addresses(card);
2271 qeth_l3_add_multicast_ipv4(card);
2272 #ifdef CONFIG_QETH_IPV6
2273 qeth_l3_add_multicast_ipv6(card);
2274 #endif
2275 qeth_l3_set_ip_addr_list(card);
2276 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2277 return;
2278 }
2279 qeth_l3_handle_promisc_mode(card);
2280 }
2281
2282 static const char *qeth_l3_arp_get_error_cause(int *rc)
2283 {
2284 switch (*rc) {
2285 case QETH_IPA_ARP_RC_FAILED:
2286 *rc = -EIO;
2287 return "operation failed";
2288 case QETH_IPA_ARP_RC_NOTSUPP:
2289 *rc = -EOPNOTSUPP;
2290 return "operation not supported";
2291 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2292 *rc = -EINVAL;
2293 return "argument out of range";
2294 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2295 *rc = -EOPNOTSUPP;
2296 return "query operation not supported";
2297 case QETH_IPA_ARP_RC_Q_NO_DATA:
2298 *rc = -ENOENT;
2299 return "no query data available";
2300 default:
2301 return "unknown error";
2302 }
2303 }
2304
2305 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2306 {
2307 int tmp;
2308 int rc;
2309
2310 QETH_CARD_TEXT(card, 3, "arpstnoe");
2311
2312 /*
2313 * currently GuestLAN only supports the ARP assist function
2314 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2315 * thus we say EOPNOTSUPP for this ARP function
2316 */
2317 if (card->info.guestlan)
2318 return -EOPNOTSUPP;
2319 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2320 return -EOPNOTSUPP;
2321 }
2322 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2323 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2324 no_entries);
2325 if (rc) {
2326 tmp = rc;
2327 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2328 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2329 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2330 }
2331 return rc;
2332 }
2333
2334 static __u32 get_arp_entry_size(struct qeth_card *card,
2335 struct qeth_arp_query_data *qdata,
2336 struct qeth_arp_entrytype *type, __u8 strip_entries)
2337 {
2338 __u32 rc;
2339 __u8 is_hsi;
2340
2341 is_hsi = qdata->reply_bits == 5;
2342 if (type->ip == QETHARP_IP_ADDR_V4) {
2343 QETH_CARD_TEXT(card, 4, "arpev4");
2344 if (strip_entries) {
2345 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2346 sizeof(struct qeth_arp_qi_entry7_short);
2347 } else {
2348 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2349 sizeof(struct qeth_arp_qi_entry7);
2350 }
2351 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2352 QETH_CARD_TEXT(card, 4, "arpev6");
2353 if (strip_entries) {
2354 rc = is_hsi ?
2355 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2356 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2357 } else {
2358 rc = is_hsi ?
2359 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2360 sizeof(struct qeth_arp_qi_entry7_ipv6);
2361 }
2362 } else {
2363 QETH_CARD_TEXT(card, 4, "arpinv");
2364 rc = 0;
2365 }
2366
2367 return rc;
2368 }
2369
2370 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2371 {
2372 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2373 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2374 }
2375
2376 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2377 struct qeth_reply *reply, unsigned long data)
2378 {
2379 struct qeth_ipa_cmd *cmd;
2380 struct qeth_arp_query_data *qdata;
2381 struct qeth_arp_query_info *qinfo;
2382 int i;
2383 int e;
2384 int entrybytes_done;
2385 int stripped_bytes;
2386 __u8 do_strip_entries;
2387
2388 QETH_CARD_TEXT(card, 3, "arpquecb");
2389
2390 qinfo = (struct qeth_arp_query_info *) reply->param;
2391 cmd = (struct qeth_ipa_cmd *) data;
2392 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2393 if (cmd->hdr.return_code) {
2394 QETH_CARD_TEXT(card, 4, "arpcberr");
2395 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2396 return 0;
2397 }
2398 if (cmd->data.setassparms.hdr.return_code) {
2399 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2400 QETH_CARD_TEXT(card, 4, "setaperr");
2401 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2402 return 0;
2403 }
2404 qdata = &cmd->data.setassparms.data.query_arp;
2405 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2406
2407 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2408 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2409 entrybytes_done = 0;
2410 for (e = 0; e < qdata->no_entries; ++e) {
2411 char *cur_entry;
2412 __u32 esize;
2413 struct qeth_arp_entrytype *etype;
2414
2415 cur_entry = &qdata->data + entrybytes_done;
2416 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2417 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2418 QETH_CARD_TEXT(card, 4, "pmis");
2419 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2420 break;
2421 }
2422 esize = get_arp_entry_size(card, qdata, etype,
2423 do_strip_entries);
2424 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2425 if (!esize)
2426 break;
2427
2428 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2429 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2430 cmd->hdr.return_code = -ENOMEM;
2431 goto out_error;
2432 }
2433
2434 memcpy(qinfo->udata + qinfo->udata_offset,
2435 &qdata->data + entrybytes_done + stripped_bytes,
2436 esize);
2437 entrybytes_done += esize + stripped_bytes;
2438 qinfo->udata_offset += esize;
2439 ++qinfo->no_entries;
2440 }
2441 /* check if all replies received ... */
2442 if (cmd->data.setassparms.hdr.seq_no <
2443 cmd->data.setassparms.hdr.number_of_replies)
2444 return 1;
2445 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2446 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2447 /* keep STRIP_ENTRIES flag so the user program can distinguish
2448 * stripped entries from normal ones */
2449 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2450 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2451 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2452 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2453 return 0;
2454 out_error:
2455 i = 0;
2456 memcpy(qinfo->udata, &i, 4);
2457 return 0;
2458 }
2459
2460 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2461 struct qeth_cmd_buffer *iob, int len,
2462 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2463 unsigned long),
2464 void *reply_param)
2465 {
2466 QETH_CARD_TEXT(card, 4, "sendarp");
2467
2468 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2469 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2470 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2471 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2472 reply_cb, reply_param);
2473 }
2474
2475 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2476 enum qeth_prot_versions prot,
2477 struct qeth_arp_query_info *qinfo)
2478 {
2479 struct qeth_cmd_buffer *iob;
2480 struct qeth_ipa_cmd *cmd;
2481 int tmp;
2482 int rc;
2483
2484 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2485
2486 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2487 IPA_CMD_ASS_ARP_QUERY_INFO,
2488 sizeof(struct qeth_arp_query_data) - sizeof(char),
2489 prot);
2490 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2491 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2492 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2493 cmd->data.setassparms.data.query_arp.no_entries = 0;
2494 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2495 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2496 qeth_l3_arp_query_cb, (void *)qinfo);
2497 if (rc) {
2498 tmp = rc;
2499 QETH_DBF_MESSAGE(2,
2500 "Error while querying ARP cache on %s: %s "
2501 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2502 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2503 }
2504
2505 return rc;
2506 }
2507
2508 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2509 {
2510 struct qeth_arp_query_info qinfo = {0, };
2511 int rc;
2512
2513 QETH_CARD_TEXT(card, 3, "arpquery");
2514
2515 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2516 IPA_ARP_PROCESSING)) {
2517 QETH_CARD_TEXT(card, 3, "arpqnsup");
2518 rc = -EOPNOTSUPP;
2519 goto out;
2520 }
2521 /* get size of userspace buffer and mask_bits -> 6 bytes */
2522 if (copy_from_user(&qinfo, udata, 6)) {
2523 rc = -EFAULT;
2524 goto out;
2525 }
2526 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2527 if (!qinfo.udata) {
2528 rc = -ENOMEM;
2529 goto out;
2530 }
2531 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2532 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2533 if (rc) {
2534 if (copy_to_user(udata, qinfo.udata, 4))
2535 rc = -EFAULT;
2536 goto free_and_out;
2537 } else {
2538 #ifdef CONFIG_QETH_IPV6
2539 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2540 /* fails in case of GuestLAN QDIO mode */
2541 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2542 &qinfo);
2543 }
2544 #endif
2545 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2546 QETH_CARD_TEXT(card, 4, "qactf");
2547 rc = -EFAULT;
2548 goto free_and_out;
2549 }
2550 QETH_CARD_TEXT_(card, 4, "qacts");
2551 }
2552 free_and_out:
2553 kfree(qinfo.udata);
2554 out:
2555 return rc;
2556 }
2557
2558 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2559 struct qeth_arp_cache_entry *entry)
2560 {
2561 struct qeth_cmd_buffer *iob;
2562 char buf[16];
2563 int tmp;
2564 int rc;
2565
2566 QETH_CARD_TEXT(card, 3, "arpadent");
2567
2568 /*
2569 * currently GuestLAN only supports the ARP assist function
2570 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2571 * thus we say EOPNOTSUPP for this ARP function
2572 */
2573 if (card->info.guestlan)
2574 return -EOPNOTSUPP;
2575 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2576 return -EOPNOTSUPP;
2577 }
2578
2579 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2580 IPA_CMD_ASS_ARP_ADD_ENTRY,
2581 sizeof(struct qeth_arp_cache_entry),
2582 QETH_PROT_IPV4);
2583 rc = qeth_l3_send_setassparms(card, iob,
2584 sizeof(struct qeth_arp_cache_entry),
2585 (unsigned long) entry,
2586 qeth_l3_default_setassparms_cb, NULL);
2587 if (rc) {
2588 tmp = rc;
2589 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2590 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2591 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2592 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2593 }
2594 return rc;
2595 }
2596
2597 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2598 struct qeth_arp_cache_entry *entry)
2599 {
2600 struct qeth_cmd_buffer *iob;
2601 char buf[16] = {0, };
2602 int tmp;
2603 int rc;
2604
2605 QETH_CARD_TEXT(card, 3, "arprment");
2606
2607 /*
2608 * currently GuestLAN only supports the ARP assist function
2609 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2610 * thus we say EOPNOTSUPP for this ARP function
2611 */
2612 if (card->info.guestlan)
2613 return -EOPNOTSUPP;
2614 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2615 return -EOPNOTSUPP;
2616 }
2617 memcpy(buf, entry, 12);
2618 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2619 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2620 12,
2621 QETH_PROT_IPV4);
2622 rc = qeth_l3_send_setassparms(card, iob,
2623 12, (unsigned long)buf,
2624 qeth_l3_default_setassparms_cb, NULL);
2625 if (rc) {
2626 tmp = rc;
2627 memset(buf, 0, 16);
2628 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2629 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2630 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2631 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2632 }
2633 return rc;
2634 }
2635
2636 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2637 {
2638 int rc;
2639 int tmp;
2640
2641 QETH_CARD_TEXT(card, 3, "arpflush");
2642
2643 /*
2644 * currently GuestLAN only supports the ARP assist function
2645 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2646 * thus we say EOPNOTSUPP for this ARP function
2647 */
2648 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2649 return -EOPNOTSUPP;
2650 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2651 return -EOPNOTSUPP;
2652 }
2653 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2654 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2655 if (rc) {
2656 tmp = rc;
2657 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2658 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2659 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2660 }
2661 return rc;
2662 }
2663
2664 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2665 {
2666 struct qeth_card *card = dev->ml_priv;
2667 struct qeth_arp_cache_entry arp_entry;
2668 struct mii_ioctl_data *mii_data;
2669 int rc = 0;
2670
2671 if (!card)
2672 return -ENODEV;
2673
2674 if ((card->state != CARD_STATE_UP) &&
2675 (card->state != CARD_STATE_SOFTSETUP))
2676 return -ENODEV;
2677
2678 switch (cmd) {
2679 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2680 if (!capable(CAP_NET_ADMIN)) {
2681 rc = -EPERM;
2682 break;
2683 }
2684 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2685 break;
2686 case SIOC_QETH_ARP_QUERY_INFO:
2687 if (!capable(CAP_NET_ADMIN)) {
2688 rc = -EPERM;
2689 break;
2690 }
2691 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2692 break;
2693 case SIOC_QETH_ARP_ADD_ENTRY:
2694 if (!capable(CAP_NET_ADMIN)) {
2695 rc = -EPERM;
2696 break;
2697 }
2698 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2699 sizeof(struct qeth_arp_cache_entry)))
2700 rc = -EFAULT;
2701 else
2702 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2703 break;
2704 case SIOC_QETH_ARP_REMOVE_ENTRY:
2705 if (!capable(CAP_NET_ADMIN)) {
2706 rc = -EPERM;
2707 break;
2708 }
2709 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2710 sizeof(struct qeth_arp_cache_entry)))
2711 rc = -EFAULT;
2712 else
2713 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2714 break;
2715 case SIOC_QETH_ARP_FLUSH_CACHE:
2716 if (!capable(CAP_NET_ADMIN)) {
2717 rc = -EPERM;
2718 break;
2719 }
2720 rc = qeth_l3_arp_flush_cache(card);
2721 break;
2722 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2723 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2724 break;
2725 case SIOC_QETH_GET_CARD_TYPE:
2726 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2727 card->info.type == QETH_CARD_TYPE_OSX) &&
2728 !card->info.guestlan)
2729 return 1;
2730 return 0;
2731 break;
2732 case SIOCGMIIPHY:
2733 mii_data = if_mii(rq);
2734 mii_data->phy_id = 0;
2735 break;
2736 case SIOCGMIIREG:
2737 mii_data = if_mii(rq);
2738 if (mii_data->phy_id != 0)
2739 rc = -EINVAL;
2740 else
2741 mii_data->val_out = qeth_mdio_read(dev,
2742 mii_data->phy_id,
2743 mii_data->reg_num);
2744 break;
2745 default:
2746 rc = -EOPNOTSUPP;
2747 }
2748 if (rc)
2749 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2750 return rc;
2751 }
2752
2753 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2754 {
2755 int cast_type = RTN_UNSPEC;
2756 struct neighbour *n = NULL;
2757 struct dst_entry *dst;
2758
2759 rcu_read_lock();
2760 dst = skb_dst(skb);
2761 if (dst)
2762 n = dst_get_neighbour(dst);
2763 if (n) {
2764 cast_type = n->type;
2765 rcu_read_unlock();
2766 if ((cast_type == RTN_BROADCAST) ||
2767 (cast_type == RTN_MULTICAST) ||
2768 (cast_type == RTN_ANYCAST))
2769 return cast_type;
2770 else
2771 return RTN_UNSPEC;
2772 }
2773 rcu_read_unlock();
2774
2775 /* try something else */
2776 if (skb->protocol == ETH_P_IPV6)
2777 return (skb_network_header(skb)[24] == 0xff) ?
2778 RTN_MULTICAST : 0;
2779 else if (skb->protocol == ETH_P_IP)
2780 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2781 RTN_MULTICAST : 0;
2782 /* ... */
2783 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2784 return RTN_BROADCAST;
2785 else {
2786 u16 hdr_mac;
2787
2788 hdr_mac = *((u16 *)skb->data);
2789 /* tr multicast? */
2790 switch (card->info.link_type) {
2791 case QETH_LINK_TYPE_HSTR:
2792 case QETH_LINK_TYPE_LANE_TR:
2793 if ((hdr_mac == QETH_TR_MAC_NC) ||
2794 (hdr_mac == QETH_TR_MAC_C))
2795 return RTN_MULTICAST;
2796 break;
2797 /* eth or so multicast? */
2798 default:
2799 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2800 (hdr_mac == QETH_ETH_MAC_V6))
2801 return RTN_MULTICAST;
2802 }
2803 }
2804 return cast_type;
2805 }
2806
2807 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2808 struct qeth_hdr *hdr, struct sk_buff *skb)
2809 {
2810 char daddr[16];
2811 struct af_iucv_trans_hdr *iucv_hdr;
2812
2813 skb_pull(skb, 14);
2814 card->dev->header_ops->create(skb, card->dev, 0,
2815 card->dev->dev_addr, card->dev->dev_addr,
2816 card->dev->addr_len);
2817 skb_pull(skb, 14);
2818 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2819 memset(hdr, 0, sizeof(struct qeth_hdr));
2820 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2821 hdr->hdr.l3.ext_flags = 0;
2822 hdr->hdr.l3.length = skb->len;
2823 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2824 memset(daddr, 0, sizeof(daddr));
2825 daddr[0] = 0xfe;
2826 daddr[1] = 0x80;
2827 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2828 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2829 }
2830
2831 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2832 struct sk_buff *skb, int ipv, int cast_type)
2833 {
2834 struct neighbour *n = NULL;
2835 struct dst_entry *dst;
2836
2837 memset(hdr, 0, sizeof(struct qeth_hdr));
2838 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2839 hdr->hdr.l3.ext_flags = 0;
2840
2841 /*
2842 * before we're going to overwrite this location with next hop ip.
2843 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2844 */
2845 if (vlan_tx_tag_present(skb)) {
2846 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2847 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2848 else
2849 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2850 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2851 }
2852
2853 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2854
2855 rcu_read_lock();
2856 dst = skb_dst(skb);
2857 if (dst)
2858 n = dst_get_neighbour(dst);
2859 if (ipv == 4) {
2860 /* IPv4 */
2861 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2862 memset(hdr->hdr.l3.dest_addr, 0, 12);
2863 if (n) {
2864 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2865 *((u32 *) n->primary_key);
2866 } else {
2867 /* fill in destination address used in ip header */
2868 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2869 ip_hdr(skb)->daddr;
2870 }
2871 } else if (ipv == 6) {
2872 /* IPv6 */
2873 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2874 if (card->info.type == QETH_CARD_TYPE_IQD)
2875 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2876 if (n) {
2877 memcpy(hdr->hdr.l3.dest_addr,
2878 n->primary_key, 16);
2879 } else {
2880 /* fill in destination address used in ip header */
2881 memcpy(hdr->hdr.l3.dest_addr,
2882 &ipv6_hdr(skb)->daddr, 16);
2883 }
2884 } else {
2885 /* passthrough */
2886 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2887 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2888 sizeof(__u16), skb->dev->broadcast, 6)) {
2889 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2890 QETH_HDR_PASSTHRU;
2891 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2892 skb->dev->broadcast, 6)) {
2893 /* broadcast? */
2894 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2895 QETH_HDR_PASSTHRU;
2896 } else {
2897 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2898 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2899 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2900 }
2901 }
2902 rcu_read_unlock();
2903 }
2904
2905 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2906 struct qeth_hdr *hdr, struct sk_buff *skb)
2907 {
2908 struct iphdr *iph = ip_hdr(skb);
2909
2910 /* tcph->check contains already the pseudo hdr checksum
2911 * so just set the header flags
2912 */
2913 if (iph->protocol == IPPROTO_UDP)
2914 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2915 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2916 QETH_HDR_EXT_CSUM_HDR_REQ;
2917 iph->check = 0;
2918 if (card->options.performance_stats)
2919 card->perf_stats.tx_csum++;
2920 }
2921
2922 static void qeth_tso_fill_header(struct qeth_card *card,
2923 struct qeth_hdr *qhdr, struct sk_buff *skb)
2924 {
2925 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2926 struct tcphdr *tcph = tcp_hdr(skb);
2927 struct iphdr *iph = ip_hdr(skb);
2928 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2929
2930 /*fix header to TSO values ...*/
2931 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2932 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2933 /*set values which are fix for the first approach ...*/
2934 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2935 hdr->ext.imb_hdr_no = 1;
2936 hdr->ext.hdr_type = 1;
2937 hdr->ext.hdr_version = 1;
2938 hdr->ext.hdr_len = 28;
2939 /*insert non-fix values */
2940 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2941 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2942 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2943 sizeof(struct qeth_hdr_tso));
2944 tcph->check = 0;
2945 if (skb->protocol == ETH_P_IPV6) {
2946 ip6h->payload_len = 0;
2947 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2948 0, IPPROTO_TCP, 0);
2949 } else {
2950 /*OSA want us to set these values ...*/
2951 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2952 0, IPPROTO_TCP, 0);
2953 iph->tot_len = 0;
2954 iph->check = 0;
2955 }
2956 }
2957
2958 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2959 {
2960 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2961 tcp_hdr(skb)->doff * 4;
2962 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2963 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2964 elements += skb_shinfo(skb)->nr_frags;
2965 return elements;
2966 }
2967
2968 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2969 {
2970 int rc;
2971 u16 *tag;
2972 struct qeth_hdr *hdr = NULL;
2973 int elements_needed = 0;
2974 int elems;
2975 struct qeth_card *card = dev->ml_priv;
2976 struct sk_buff *new_skb = NULL;
2977 int ipv = qeth_get_ip_version(skb);
2978 int cast_type = qeth_l3_get_cast_type(card, skb);
2979 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2980 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2981 int tx_bytes = skb->len;
2982 bool large_send;
2983 int data_offset = -1;
2984 int nr_frags;
2985
2986 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2987 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2988 ((card->options.cq == QETH_CQ_ENABLED) &&
2989 (skb->protocol != ETH_P_AF_IUCV)))) ||
2990 card->options.sniffer)
2991 goto tx_drop;
2992
2993 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2994 card->stats.tx_carrier_errors++;
2995 goto tx_drop;
2996 }
2997
2998 if ((cast_type == RTN_BROADCAST) &&
2999 (card->info.broadcast_capable == 0))
3000 goto tx_drop;
3001
3002 if (card->options.performance_stats) {
3003 card->perf_stats.outbound_cnt++;
3004 card->perf_stats.outbound_start_time = qeth_get_micros();
3005 }
3006
3007 large_send = skb_is_gso(skb);
3008
3009 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
3010 (skb_shinfo(skb)->nr_frags == 0)) {
3011 new_skb = skb;
3012 if (new_skb->protocol == ETH_P_AF_IUCV)
3013 data_offset = 0;
3014 else
3015 data_offset = ETH_HLEN;
3016 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3017 if (!hdr)
3018 goto tx_drop;
3019 elements_needed++;
3020 } else {
3021 /* create a clone with writeable headroom */
3022 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3023 + VLAN_HLEN);
3024 if (!new_skb)
3025 goto tx_drop;
3026 }
3027
3028 if (card->info.type == QETH_CARD_TYPE_IQD) {
3029 if (data_offset < 0)
3030 skb_pull(new_skb, ETH_HLEN);
3031 } else {
3032 if (ipv == 4) {
3033 if (card->dev->type == ARPHRD_IEEE802_TR)
3034 skb_pull(new_skb, TR_HLEN);
3035 else
3036 skb_pull(new_skb, ETH_HLEN);
3037 }
3038
3039 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
3040 skb_push(new_skb, VLAN_HLEN);
3041 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3042 skb_copy_to_linear_data_offset(new_skb, 4,
3043 new_skb->data + 8, 4);
3044 skb_copy_to_linear_data_offset(new_skb, 8,
3045 new_skb->data + 12, 4);
3046 tag = (u16 *)(new_skb->data + 12);
3047 *tag = __constant_htons(ETH_P_8021Q);
3048 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3049 }
3050 }
3051
3052 netif_stop_queue(dev);
3053
3054 /* fix hardware limitation: as long as we do not have sbal
3055 * chaining we can not send long frag lists
3056 */
3057 if (large_send) {
3058 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3059 if (skb_linearize(new_skb))
3060 goto tx_drop;
3061 if (card->options.performance_stats)
3062 card->perf_stats.tx_lin++;
3063 }
3064 }
3065
3066 if (large_send && (cast_type == RTN_UNSPEC)) {
3067 hdr = (struct qeth_hdr *)skb_push(new_skb,
3068 sizeof(struct qeth_hdr_tso));
3069 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3070 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3071 qeth_tso_fill_header(card, hdr, new_skb);
3072 elements_needed++;
3073 } else {
3074 if (data_offset < 0) {
3075 hdr = (struct qeth_hdr *)skb_push(new_skb,
3076 sizeof(struct qeth_hdr));
3077 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3078 cast_type);
3079 } else {
3080 if (new_skb->protocol == ETH_P_AF_IUCV)
3081 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3082 else {
3083 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3084 cast_type);
3085 hdr->hdr.l3.length = new_skb->len - data_offset;
3086 }
3087 }
3088
3089 if (skb->ip_summed == CHECKSUM_PARTIAL)
3090 qeth_l3_hdr_csum(card, hdr, new_skb);
3091 }
3092
3093 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3094 elements_needed);
3095 if (!elems) {
3096 if (data_offset >= 0)
3097 kmem_cache_free(qeth_core_header_cache, hdr);
3098 goto tx_drop;
3099 }
3100 elements_needed += elems;
3101 nr_frags = skb_shinfo(new_skb)->nr_frags;
3102
3103 if (card->info.type != QETH_CARD_TYPE_IQD) {
3104 int len;
3105 if (large_send)
3106 len = ((unsigned long)tcp_hdr(new_skb) +
3107 tcp_hdr(new_skb)->doff * 4) -
3108 (unsigned long)new_skb->data;
3109 else
3110 len = sizeof(struct qeth_hdr_layer3);
3111
3112 if (qeth_hdr_chk_and_bounce(new_skb, len))
3113 goto tx_drop;
3114 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3115 elements_needed);
3116 } else
3117 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3118 elements_needed, data_offset, 0);
3119
3120 if (!rc) {
3121 card->stats.tx_packets++;
3122 card->stats.tx_bytes += tx_bytes;
3123 if (new_skb != skb)
3124 dev_kfree_skb_any(skb);
3125 if (card->options.performance_stats) {
3126 if (large_send) {
3127 card->perf_stats.large_send_bytes += tx_bytes;
3128 card->perf_stats.large_send_cnt++;
3129 }
3130 if (nr_frags) {
3131 card->perf_stats.sg_skbs_sent++;
3132 /* nr_frags + skb->data */
3133 card->perf_stats.sg_frags_sent += nr_frags + 1;
3134 }
3135 }
3136 rc = NETDEV_TX_OK;
3137 } else {
3138 if (data_offset >= 0)
3139 kmem_cache_free(qeth_core_header_cache, hdr);
3140
3141 if (rc == -EBUSY) {
3142 if (new_skb != skb)
3143 dev_kfree_skb_any(new_skb);
3144 return NETDEV_TX_BUSY;
3145 } else
3146 goto tx_drop;
3147 }
3148
3149 netif_wake_queue(dev);
3150 if (card->options.performance_stats)
3151 card->perf_stats.outbound_time += qeth_get_micros() -
3152 card->perf_stats.outbound_start_time;
3153 return rc;
3154
3155 tx_drop:
3156 card->stats.tx_dropped++;
3157 card->stats.tx_errors++;
3158 if ((new_skb != skb) && new_skb)
3159 dev_kfree_skb_any(new_skb);
3160 dev_kfree_skb_any(skb);
3161 netif_wake_queue(dev);
3162 return NETDEV_TX_OK;
3163 }
3164
3165 static int __qeth_l3_open(struct net_device *dev)
3166 {
3167 struct qeth_card *card = dev->ml_priv;
3168 int rc = 0;
3169
3170 QETH_CARD_TEXT(card, 4, "qethopen");
3171 if (card->state == CARD_STATE_UP)
3172 return rc;
3173 if (card->state != CARD_STATE_SOFTSETUP)
3174 return -ENODEV;
3175 card->data.state = CH_STATE_UP;
3176 card->state = CARD_STATE_UP;
3177 netif_start_queue(dev);
3178
3179 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3180 napi_enable(&card->napi);
3181 napi_schedule(&card->napi);
3182 } else
3183 rc = -EIO;
3184 return rc;
3185 }
3186
3187 static int qeth_l3_open(struct net_device *dev)
3188 {
3189 struct qeth_card *card = dev->ml_priv;
3190
3191 QETH_CARD_TEXT(card, 5, "qethope_");
3192 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3193 QETH_CARD_TEXT(card, 3, "openREC");
3194 return -ERESTARTSYS;
3195 }
3196 return __qeth_l3_open(dev);
3197 }
3198
3199 static int qeth_l3_stop(struct net_device *dev)
3200 {
3201 struct qeth_card *card = dev->ml_priv;
3202
3203 QETH_CARD_TEXT(card, 4, "qethstop");
3204 netif_tx_disable(dev);
3205 if (card->state == CARD_STATE_UP) {
3206 card->state = CARD_STATE_SOFTSETUP;
3207 napi_disable(&card->napi);
3208 }
3209 return 0;
3210 }
3211
3212 static u32 qeth_l3_fix_features(struct net_device *dev, u32 features)
3213 {
3214 struct qeth_card *card = dev->ml_priv;
3215
3216 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3217 features &= ~NETIF_F_IP_CSUM;
3218 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3219 features &= ~NETIF_F_TSO;
3220 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3221 features &= ~NETIF_F_RXCSUM;
3222
3223 return features;
3224 }
3225
3226 static int qeth_l3_set_features(struct net_device *dev, u32 features)
3227 {
3228 struct qeth_card *card = dev->ml_priv;
3229 u32 changed = dev->features ^ features;
3230 int err;
3231
3232 if (!(changed & NETIF_F_RXCSUM))
3233 return 0;
3234
3235 if (card->state == CARD_STATE_DOWN ||
3236 card->state == CARD_STATE_RECOVER)
3237 return 0;
3238
3239 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3240 if (err)
3241 dev->features = features ^ NETIF_F_RXCSUM;
3242
3243 return err;
3244 }
3245
3246 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3247 .get_link = ethtool_op_get_link,
3248 .get_strings = qeth_core_get_strings,
3249 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3250 .get_sset_count = qeth_core_get_sset_count,
3251 .get_drvinfo = qeth_core_get_drvinfo,
3252 .get_settings = qeth_core_ethtool_get_settings,
3253 };
3254
3255 /*
3256 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3257 * NOARP on the netdevice is no option because it also turns off neighbor
3258 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3259 * arp resolution but we want the hard header (packet socket will work
3260 * e.g. tcpdump)
3261 */
3262 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3263 {
3264 n->nud_state = NUD_NOARP;
3265 memcpy(n->ha, "FAKELL", 6);
3266 n->output = n->ops->connected_output;
3267 return 0;
3268 }
3269
3270 static int
3271 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3272 {
3273 if (np->tbl->family == AF_INET)
3274 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3275
3276 return 0;
3277 }
3278
3279 static const struct net_device_ops qeth_l3_netdev_ops = {
3280 .ndo_open = qeth_l3_open,
3281 .ndo_stop = qeth_l3_stop,
3282 .ndo_get_stats = qeth_get_stats,
3283 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3284 .ndo_validate_addr = eth_validate_addr,
3285 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3286 .ndo_do_ioctl = qeth_l3_do_ioctl,
3287 .ndo_change_mtu = qeth_change_mtu,
3288 .ndo_fix_features = qeth_l3_fix_features,
3289 .ndo_set_features = qeth_l3_set_features,
3290 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3291 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3292 .ndo_tx_timeout = qeth_tx_timeout,
3293 };
3294
3295 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3296 .ndo_open = qeth_l3_open,
3297 .ndo_stop = qeth_l3_stop,
3298 .ndo_get_stats = qeth_get_stats,
3299 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3300 .ndo_validate_addr = eth_validate_addr,
3301 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3302 .ndo_do_ioctl = qeth_l3_do_ioctl,
3303 .ndo_change_mtu = qeth_change_mtu,
3304 .ndo_fix_features = qeth_l3_fix_features,
3305 .ndo_set_features = qeth_l3_set_features,
3306 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3307 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3308 .ndo_tx_timeout = qeth_tx_timeout,
3309 .ndo_neigh_setup = qeth_l3_neigh_setup,
3310 };
3311
3312 static int qeth_l3_setup_netdev(struct qeth_card *card)
3313 {
3314 if (card->info.type == QETH_CARD_TYPE_OSD ||
3315 card->info.type == QETH_CARD_TYPE_OSX) {
3316 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3317 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3318 #ifdef CONFIG_TR
3319 card->dev = alloc_trdev(0);
3320 #endif
3321 if (!card->dev)
3322 return -ENODEV;
3323 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3324 } else {
3325 card->dev = alloc_etherdev(0);
3326 if (!card->dev)
3327 return -ENODEV;
3328 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3329
3330 /*IPv6 address autoconfiguration stuff*/
3331 qeth_l3_get_unique_id(card);
3332 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3333 card->dev->dev_id = card->info.unique_id &
3334 0xffff;
3335 if (!card->info.guestlan) {
3336 card->dev->hw_features = NETIF_F_SG |
3337 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3338 NETIF_F_TSO;
3339 card->dev->features = NETIF_F_RXCSUM;
3340 }
3341 }
3342 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3343 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3344 if (!card->dev)
3345 return -ENODEV;
3346 card->dev->flags |= IFF_NOARP;
3347 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3348 qeth_l3_iqd_read_initial_mac(card);
3349 if (card->options.hsuid[0])
3350 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3351 } else
3352 return -ENODEV;
3353
3354 card->dev->ml_priv = card;
3355 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3356 card->dev->mtu = card->info.initial_mtu;
3357 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3358 card->dev->features |= NETIF_F_HW_VLAN_TX |
3359 NETIF_F_HW_VLAN_RX |
3360 NETIF_F_HW_VLAN_FILTER;
3361 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3362 card->dev->gso_max_size = 15 * PAGE_SIZE;
3363
3364 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3365 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3366 return register_netdev(card->dev);
3367 }
3368
3369 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3370 {
3371 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3372
3373 qeth_l3_create_device_attributes(&gdev->dev);
3374 card->options.layer2 = 0;
3375 card->info.hwtrap = 0;
3376 card->discipline.start_poll = qeth_qdio_start_poll;
3377 card->discipline.input_handler = (qdio_handler_t *)
3378 qeth_qdio_input_handler;
3379 card->discipline.output_handler = (qdio_handler_t *)
3380 qeth_qdio_output_handler;
3381 card->discipline.recover = qeth_l3_recover;
3382 return 0;
3383 }
3384
3385 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3386 {
3387 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3388
3389 qeth_l3_remove_device_attributes(&cgdev->dev);
3390
3391 qeth_set_allowed_threads(card, 0, 1);
3392 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3393
3394 if (cgdev->state == CCWGROUP_ONLINE)
3395 qeth_l3_set_offline(cgdev);
3396
3397 if (card->dev) {
3398 unregister_netdev(card->dev);
3399 card->dev = NULL;
3400 }
3401
3402 qeth_l3_clear_ip_list(card, 0);
3403 qeth_l3_clear_ipato_list(card);
3404 return;
3405 }
3406
3407 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3408 {
3409 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3410 int rc = 0;
3411 enum qeth_card_states recover_flag;
3412
3413 BUG_ON(!card);
3414 mutex_lock(&card->discipline_mutex);
3415 mutex_lock(&card->conf_mutex);
3416 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3417 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3418
3419 recover_flag = card->state;
3420 rc = qeth_core_hardsetup_card(card);
3421 if (rc) {
3422 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3423 rc = -ENODEV;
3424 goto out_remove;
3425 }
3426
3427 if (!card->dev && qeth_l3_setup_netdev(card)) {
3428 rc = -ENODEV;
3429 goto out_remove;
3430 }
3431
3432 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3433 if (card->info.hwtrap &&
3434 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3435 card->info.hwtrap = 0;
3436 } else
3437 card->info.hwtrap = 0;
3438
3439 card->state = CARD_STATE_HARDSETUP;
3440 memset(&card->rx, 0, sizeof(struct qeth_rx));
3441 qeth_print_status_message(card);
3442
3443 /* softsetup */
3444 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3445
3446 rc = qeth_send_startlan(card);
3447 if (rc) {
3448 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3449 if (rc == 0xe080) {
3450 dev_warn(&card->gdev->dev,
3451 "The LAN is offline\n");
3452 card->lan_online = 0;
3453 goto contin;
3454 }
3455 rc = -ENODEV;
3456 goto out_remove;
3457 } else
3458 card->lan_online = 1;
3459
3460 contin:
3461 rc = qeth_l3_setadapter_parms(card);
3462 if (rc)
3463 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3464 if (!card->options.sniffer) {
3465 rc = qeth_l3_start_ipassists(card);
3466 if (rc)
3467 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3468 rc = qeth_l3_setrouting_v4(card);
3469 if (rc)
3470 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3471 rc = qeth_l3_setrouting_v6(card);
3472 if (rc)
3473 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3474 }
3475 netif_tx_disable(card->dev);
3476
3477 rc = qeth_init_qdio_queues(card);
3478 if (rc) {
3479 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3480 rc = -ENODEV;
3481 goto out_remove;
3482 }
3483 card->state = CARD_STATE_SOFTSETUP;
3484
3485 qeth_set_allowed_threads(card, 0xffffffff, 0);
3486 qeth_l3_set_ip_addr_list(card);
3487 if (card->lan_online)
3488 netif_carrier_on(card->dev);
3489 else
3490 netif_carrier_off(card->dev);
3491 if (recover_flag == CARD_STATE_RECOVER) {
3492 if (recovery_mode)
3493 __qeth_l3_open(card->dev);
3494 else {
3495 rtnl_lock();
3496 dev_open(card->dev);
3497 rtnl_unlock();
3498 }
3499 qeth_l3_set_multicast_list(card->dev);
3500 }
3501 /* let user_space know that device is online */
3502 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3503 mutex_unlock(&card->conf_mutex);
3504 mutex_unlock(&card->discipline_mutex);
3505 return 0;
3506 out_remove:
3507 qeth_l3_stop_card(card, 0);
3508 ccw_device_set_offline(CARD_DDEV(card));
3509 ccw_device_set_offline(CARD_WDEV(card));
3510 ccw_device_set_offline(CARD_RDEV(card));
3511 if (recover_flag == CARD_STATE_RECOVER)
3512 card->state = CARD_STATE_RECOVER;
3513 else
3514 card->state = CARD_STATE_DOWN;
3515 mutex_unlock(&card->conf_mutex);
3516 mutex_unlock(&card->discipline_mutex);
3517 return rc;
3518 }
3519
3520 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3521 {
3522 return __qeth_l3_set_online(gdev, 0);
3523 }
3524
3525 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3526 int recovery_mode)
3527 {
3528 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3529 int rc = 0, rc2 = 0, rc3 = 0;
3530 enum qeth_card_states recover_flag;
3531
3532 mutex_lock(&card->discipline_mutex);
3533 mutex_lock(&card->conf_mutex);
3534 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3535 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3536
3537 if (card->dev && netif_carrier_ok(card->dev))
3538 netif_carrier_off(card->dev);
3539 recover_flag = card->state;
3540 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3541 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3542 card->info.hwtrap = 1;
3543 }
3544 qeth_l3_stop_card(card, recovery_mode);
3545 rc = ccw_device_set_offline(CARD_DDEV(card));
3546 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3547 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3548 if (!rc)
3549 rc = (rc2) ? rc2 : rc3;
3550 if (rc)
3551 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3552 if (recover_flag == CARD_STATE_UP)
3553 card->state = CARD_STATE_RECOVER;
3554 /* let user_space know that device is offline */
3555 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3556 mutex_unlock(&card->conf_mutex);
3557 mutex_unlock(&card->discipline_mutex);
3558 return 0;
3559 }
3560
3561 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3562 {
3563 return __qeth_l3_set_offline(cgdev, 0);
3564 }
3565
3566 static int qeth_l3_recover(void *ptr)
3567 {
3568 struct qeth_card *card;
3569 int rc = 0;
3570
3571 card = (struct qeth_card *) ptr;
3572 QETH_CARD_TEXT(card, 2, "recover1");
3573 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3574 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3575 return 0;
3576 QETH_CARD_TEXT(card, 2, "recover2");
3577 dev_warn(&card->gdev->dev,
3578 "A recovery process has been started for the device\n");
3579 __qeth_l3_set_offline(card->gdev, 1);
3580 rc = __qeth_l3_set_online(card->gdev, 1);
3581 if (!rc)
3582 dev_info(&card->gdev->dev,
3583 "Device successfully recovered!\n");
3584 else {
3585 rtnl_lock();
3586 dev_close(card->dev);
3587 rtnl_unlock();
3588 dev_warn(&card->gdev->dev, "The qeth device driver "
3589 "failed to recover an error on the device\n");
3590 }
3591 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3592 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3593 return 0;
3594 }
3595
3596 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3597 {
3598 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3599 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3600 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3601 qeth_qdio_clear_card(card, 0);
3602 qeth_clear_qdio_buffers(card);
3603 }
3604
3605 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3606 {
3607 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3608
3609 if (card->dev)
3610 netif_device_detach(card->dev);
3611 qeth_set_allowed_threads(card, 0, 1);
3612 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3613 if (gdev->state == CCWGROUP_OFFLINE)
3614 return 0;
3615 if (card->state == CARD_STATE_UP) {
3616 if (card->info.hwtrap)
3617 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3618 __qeth_l3_set_offline(card->gdev, 1);
3619 } else
3620 __qeth_l3_set_offline(card->gdev, 0);
3621 return 0;
3622 }
3623
3624 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3625 {
3626 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3627 int rc = 0;
3628
3629 if (gdev->state == CCWGROUP_OFFLINE)
3630 goto out;
3631
3632 if (card->state == CARD_STATE_RECOVER) {
3633 rc = __qeth_l3_set_online(card->gdev, 1);
3634 if (rc) {
3635 rtnl_lock();
3636 dev_close(card->dev);
3637 rtnl_unlock();
3638 }
3639 } else
3640 rc = __qeth_l3_set_online(card->gdev, 0);
3641 out:
3642 qeth_set_allowed_threads(card, 0xffffffff, 0);
3643 if (card->dev)
3644 netif_device_attach(card->dev);
3645 if (rc)
3646 dev_warn(&card->gdev->dev, "The qeth device driver "
3647 "failed to recover an error on the device\n");
3648 return rc;
3649 }
3650
3651 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3652 .probe = qeth_l3_probe_device,
3653 .remove = qeth_l3_remove_device,
3654 .set_online = qeth_l3_set_online,
3655 .set_offline = qeth_l3_set_offline,
3656 .shutdown = qeth_l3_shutdown,
3657 .freeze = qeth_l3_pm_suspend,
3658 .thaw = qeth_l3_pm_resume,
3659 .restore = qeth_l3_pm_resume,
3660 };
3661 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3662
3663 static int qeth_l3_ip_event(struct notifier_block *this,
3664 unsigned long event, void *ptr)
3665 {
3666 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3667 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3668 struct qeth_ipaddr *addr;
3669 struct qeth_card *card;
3670
3671 if (dev_net(dev) != &init_net)
3672 return NOTIFY_DONE;
3673
3674 card = qeth_l3_get_card_from_dev(dev);
3675 QETH_CARD_TEXT(card, 3, "ipevent");
3676 if (!card)
3677 return NOTIFY_DONE;
3678
3679 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3680 if (addr != NULL) {
3681 addr->u.a4.addr = ifa->ifa_address;
3682 addr->u.a4.mask = ifa->ifa_mask;
3683 addr->type = QETH_IP_TYPE_NORMAL;
3684 } else
3685 goto out;
3686
3687 switch (event) {
3688 case NETDEV_UP:
3689 if (!qeth_l3_add_ip(card, addr))
3690 kfree(addr);
3691 break;
3692 case NETDEV_DOWN:
3693 if (!qeth_l3_delete_ip(card, addr))
3694 kfree(addr);
3695 break;
3696 default:
3697 break;
3698 }
3699 qeth_l3_set_ip_addr_list(card);
3700 out:
3701 return NOTIFY_DONE;
3702 }
3703
3704 static struct notifier_block qeth_l3_ip_notifier = {
3705 qeth_l3_ip_event,
3706 NULL,
3707 };
3708
3709 #ifdef CONFIG_QETH_IPV6
3710 /**
3711 * IPv6 event handler
3712 */
3713 static int qeth_l3_ip6_event(struct notifier_block *this,
3714 unsigned long event, void *ptr)
3715 {
3716 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3717 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3718 struct qeth_ipaddr *addr;
3719 struct qeth_card *card;
3720
3721 card = qeth_l3_get_card_from_dev(dev);
3722 if (!card)
3723 return NOTIFY_DONE;
3724 QETH_CARD_TEXT(card, 3, "ip6event");
3725 if (!qeth_is_supported(card, IPA_IPV6))
3726 return NOTIFY_DONE;
3727
3728 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3729 if (addr != NULL) {
3730 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3731 addr->u.a6.pfxlen = ifa->prefix_len;
3732 addr->type = QETH_IP_TYPE_NORMAL;
3733 } else
3734 goto out;
3735
3736 switch (event) {
3737 case NETDEV_UP:
3738 if (!qeth_l3_add_ip(card, addr))
3739 kfree(addr);
3740 break;
3741 case NETDEV_DOWN:
3742 if (!qeth_l3_delete_ip(card, addr))
3743 kfree(addr);
3744 break;
3745 default:
3746 break;
3747 }
3748 qeth_l3_set_ip_addr_list(card);
3749 out:
3750 return NOTIFY_DONE;
3751 }
3752
3753 static struct notifier_block qeth_l3_ip6_notifier = {
3754 qeth_l3_ip6_event,
3755 NULL,
3756 };
3757 #endif
3758
3759 static int qeth_l3_register_notifiers(void)
3760 {
3761 int rc;
3762
3763 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3764 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3765 if (rc)
3766 return rc;
3767 #ifdef CONFIG_QETH_IPV6
3768 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3769 if (rc) {
3770 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3771 return rc;
3772 }
3773 #else
3774 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3775 #endif
3776 return 0;
3777 }
3778
3779 static void qeth_l3_unregister_notifiers(void)
3780 {
3781
3782 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3783 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3784 #ifdef CONFIG_QETH_IPV6
3785 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3786 #endif /* QETH_IPV6 */
3787 }
3788
3789 static int __init qeth_l3_init(void)
3790 {
3791 int rc = 0;
3792
3793 pr_info("register layer 3 discipline\n");
3794 rc = qeth_l3_register_notifiers();
3795 return rc;
3796 }
3797
3798 static void __exit qeth_l3_exit(void)
3799 {
3800 qeth_l3_unregister_notifiers();
3801 pr_info("unregister layer 3 discipline\n");
3802 }
3803
3804 module_init(qeth_l3_init);
3805 module_exit(qeth_l3_exit);
3806 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3807 MODULE_DESCRIPTION("qeth layer 3 discipline");
3808 MODULE_LICENSE("GPL");