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netdev: drivers should make ethtool_ops const
[deliverable/linux.git] / drivers / s390 / net / qeth_l3_main.c
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/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/etherdevice.h>
20 #include <linux/mii.h>
21 #include <linux/ip.h>
22 #include <linux/ipv6.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25
26 #include <net/ip.h>
27 #include <net/arp.h>
28 #include <net/ip6_checksum.h>
29
30 #include "qeth_l3.h"
31
32 static int qeth_l3_set_offline(struct ccwgroup_device *);
33 static int qeth_l3_recover(void *);
34 static int qeth_l3_stop(struct net_device *);
35 static void qeth_l3_set_multicast_list(struct net_device *);
36 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
37 static int qeth_l3_register_addr_entry(struct qeth_card *,
38 struct qeth_ipaddr *);
39 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
40 struct qeth_ipaddr *);
41 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
42 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
43
44
45 static int qeth_l3_isxdigit(char *buf)
46 {
47 while (*buf) {
48 if (!isxdigit(*buf++))
49 return 0;
50 }
51 return 1;
52 }
53
54 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
55 {
56 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
57 }
58
59 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
60 {
61 int count = 0, rc = 0;
62 int in[4];
63 char c;
64
65 rc = sscanf(buf, "%u.%u.%u.%u%c",
66 &in[0], &in[1], &in[2], &in[3], &c);
67 if (rc != 4 && (rc != 5 || c != '\n'))
68 return -EINVAL;
69 for (count = 0; count < 4; count++) {
70 if (in[count] > 255)
71 return -EINVAL;
72 addr[count] = in[count];
73 }
74 return 0;
75 }
76
77 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
78 {
79 sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
80 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
81 addr[0], addr[1], addr[2], addr[3],
82 addr[4], addr[5], addr[6], addr[7],
83 addr[8], addr[9], addr[10], addr[11],
84 addr[12], addr[13], addr[14], addr[15]);
85 }
86
87 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
88 {
89 const char *end, *end_tmp, *start;
90 __u16 *in;
91 char num[5];
92 int num2, cnt, out, found, save_cnt;
93 unsigned short in_tmp[8] = {0, };
94
95 cnt = out = found = save_cnt = num2 = 0;
96 end = start = buf;
97 in = (__u16 *) addr;
98 memset(in, 0, 16);
99 while (*end) {
100 end = strchr(start, ':');
101 if (end == NULL) {
102 end = buf + strlen(buf);
103 end_tmp = strchr(start, '\n');
104 if (end_tmp != NULL)
105 end = end_tmp;
106 out = 1;
107 }
108 if ((end - start)) {
109 memset(num, 0, 5);
110 if ((end - start) > 4)
111 return -EINVAL;
112 memcpy(num, start, end - start);
113 if (!qeth_l3_isxdigit(num))
114 return -EINVAL;
115 sscanf(start, "%x", &num2);
116 if (found)
117 in_tmp[save_cnt++] = num2;
118 else
119 in[cnt++] = num2;
120 if (out)
121 break;
122 } else {
123 if (found)
124 return -EINVAL;
125 found = 1;
126 }
127 start = ++end;
128 }
129 if (cnt + save_cnt > 8)
130 return -EINVAL;
131 cnt = 7;
132 while (save_cnt)
133 in[cnt--] = in_tmp[--save_cnt];
134 return 0;
135 }
136
137 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
138 char *buf)
139 {
140 if (proto == QETH_PROT_IPV4)
141 qeth_l3_ipaddr4_to_string(addr, buf);
142 else if (proto == QETH_PROT_IPV6)
143 qeth_l3_ipaddr6_to_string(addr, buf);
144 }
145
146 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
147 __u8 *addr)
148 {
149 if (proto == QETH_PROT_IPV4)
150 return qeth_l3_string_to_ipaddr4(buf, addr);
151 else if (proto == QETH_PROT_IPV6)
152 return qeth_l3_string_to_ipaddr6(buf, addr);
153 else
154 return -EINVAL;
155 }
156
157 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
158 {
159 int i, j;
160 u8 octet;
161
162 for (i = 0; i < len; ++i) {
163 octet = addr[i];
164 for (j = 7; j >= 0; --j) {
165 bits[i*8 + j] = octet & 1;
166 octet >>= 1;
167 }
168 }
169 }
170
171 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
172 struct qeth_ipaddr *addr)
173 {
174 struct qeth_ipato_entry *ipatoe;
175 u8 addr_bits[128] = {0, };
176 u8 ipatoe_bits[128] = {0, };
177 int rc = 0;
178
179 if (!card->ipato.enabled)
180 return 0;
181
182 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
183 (addr->proto == QETH_PROT_IPV4)? 4:16);
184 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
185 if (addr->proto != ipatoe->proto)
186 continue;
187 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
188 (ipatoe->proto == QETH_PROT_IPV4) ?
189 4 : 16);
190 if (addr->proto == QETH_PROT_IPV4)
191 rc = !memcmp(addr_bits, ipatoe_bits,
192 min(32, ipatoe->mask_bits));
193 else
194 rc = !memcmp(addr_bits, ipatoe_bits,
195 min(128, ipatoe->mask_bits));
196 if (rc)
197 break;
198 }
199 /* invert? */
200 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
201 rc = !rc;
202 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
203 rc = !rc;
204
205 return rc;
206 }
207
208 /*
209 * Add IP to be added to todo list. If there is already an "add todo"
210 * in this list we just incremenent the reference count.
211 * Returns 0 if we just incremented reference count.
212 */
213 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
214 struct qeth_ipaddr *addr, int add)
215 {
216 struct qeth_ipaddr *tmp, *t;
217 int found = 0;
218
219 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
220 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
221 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
222 return 0;
223 if ((tmp->proto == QETH_PROT_IPV4) &&
224 (addr->proto == QETH_PROT_IPV4) &&
225 (tmp->type == addr->type) &&
226 (tmp->is_multicast == addr->is_multicast) &&
227 (tmp->u.a4.addr == addr->u.a4.addr) &&
228 (tmp->u.a4.mask == addr->u.a4.mask)) {
229 found = 1;
230 break;
231 }
232 if ((tmp->proto == QETH_PROT_IPV6) &&
233 (addr->proto == QETH_PROT_IPV6) &&
234 (tmp->type == addr->type) &&
235 (tmp->is_multicast == addr->is_multicast) &&
236 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
237 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
238 sizeof(struct in6_addr)) == 0)) {
239 found = 1;
240 break;
241 }
242 }
243 if (found) {
244 if (addr->users != 0)
245 tmp->users += addr->users;
246 else
247 tmp->users += add ? 1 : -1;
248 if (tmp->users == 0) {
249 list_del(&tmp->entry);
250 kfree(tmp);
251 }
252 return 0;
253 } else {
254 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
255 list_add(&addr->entry, card->ip_tbd_list);
256 else {
257 if (addr->users == 0)
258 addr->users += add ? 1 : -1;
259 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
260 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
261 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
262 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
263 }
264 list_add_tail(&addr->entry, card->ip_tbd_list);
265 }
266 return 1;
267 }
268 }
269
270 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
271 {
272 unsigned long flags;
273 int rc = 0;
274
275 QETH_DBF_TEXT(TRACE, 4, "delip");
276
277 if (addr->proto == QETH_PROT_IPV4)
278 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
279 else {
280 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
281 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
282 }
283 spin_lock_irqsave(&card->ip_lock, flags);
284 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
285 spin_unlock_irqrestore(&card->ip_lock, flags);
286 return rc;
287 }
288
289 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
290 {
291 unsigned long flags;
292 int rc = 0;
293
294 QETH_DBF_TEXT(TRACE, 4, "addip");
295 if (addr->proto == QETH_PROT_IPV4)
296 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
297 else {
298 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
299 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
300 }
301 spin_lock_irqsave(&card->ip_lock, flags);
302 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
303 spin_unlock_irqrestore(&card->ip_lock, flags);
304 return rc;
305 }
306
307
308 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
309 enum qeth_prot_versions prot)
310 {
311 struct qeth_ipaddr *addr;
312
313 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
314 if (addr == NULL) {
315 return NULL;
316 }
317 addr->type = QETH_IP_TYPE_NORMAL;
318 addr->proto = prot;
319 return addr;
320 }
321
322 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
323 {
324 struct qeth_ipaddr *iptodo;
325 unsigned long flags;
326
327 QETH_DBF_TEXT(TRACE, 4, "delmc");
328 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
329 if (!iptodo) {
330 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
331 return;
332 }
333 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
334 spin_lock_irqsave(&card->ip_lock, flags);
335 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
336 kfree(iptodo);
337 spin_unlock_irqrestore(&card->ip_lock, flags);
338 }
339
340 /*
341 * Add/remove address to/from card's ip list, i.e. try to add or remove
342 * reference to/from an IP address that is already registered on the card.
343 * Returns:
344 * 0 address was on card and its reference count has been adjusted,
345 * but is still > 0, so nothing has to be done
346 * also returns 0 if card was not on card and the todo was to delete
347 * the address -> there is also nothing to be done
348 * 1 address was not on card and the todo is to add it to the card's ip
349 * list
350 * -1 address was on card and its reference count has been decremented
351 * to <= 0 by the todo -> address must be removed from card
352 */
353 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
354 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
355 {
356 struct qeth_ipaddr *addr;
357 int found = 0;
358
359 list_for_each_entry(addr, &card->ip_list, entry) {
360 if ((addr->proto == QETH_PROT_IPV4) &&
361 (todo->proto == QETH_PROT_IPV4) &&
362 (addr->type == todo->type) &&
363 (addr->u.a4.addr == todo->u.a4.addr) &&
364 (addr->u.a4.mask == todo->u.a4.mask)) {
365 found = 1;
366 break;
367 }
368 if ((addr->proto == QETH_PROT_IPV6) &&
369 (todo->proto == QETH_PROT_IPV6) &&
370 (addr->type == todo->type) &&
371 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
372 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
373 sizeof(struct in6_addr)) == 0)) {
374 found = 1;
375 break;
376 }
377 }
378 if (found) {
379 addr->users += todo->users;
380 if (addr->users <= 0) {
381 *__addr = addr;
382 return -1;
383 } else {
384 /* for VIPA and RXIP limit refcount to 1 */
385 if (addr->type != QETH_IP_TYPE_NORMAL)
386 addr->users = 1;
387 return 0;
388 }
389 }
390 if (todo->users > 0) {
391 /* for VIPA and RXIP limit refcount to 1 */
392 if (todo->type != QETH_IP_TYPE_NORMAL)
393 todo->users = 1;
394 return 1;
395 } else
396 return 0;
397 }
398
399 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
400 unsigned long *flags)
401 {
402 struct list_head fail_list;
403 struct qeth_ipaddr *addr, *tmp;
404 int rc;
405
406 INIT_LIST_HEAD(&fail_list);
407 again:
408 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
409 if (addr->is_multicast) {
410 list_del(&addr->entry);
411 spin_unlock_irqrestore(&card->ip_lock, *flags);
412 rc = qeth_l3_deregister_addr_entry(card, addr);
413 spin_lock_irqsave(&card->ip_lock, *flags);
414 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
415 kfree(addr);
416 else
417 list_add_tail(&addr->entry, &fail_list);
418 goto again;
419 }
420 }
421 list_splice(&fail_list, &card->ip_list);
422 }
423
424 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
425 {
426 struct list_head *tbd_list;
427 struct qeth_ipaddr *todo, *addr;
428 unsigned long flags;
429 int rc;
430
431 QETH_DBF_TEXT(TRACE, 2, "sdiplist");
432 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
433
434 spin_lock_irqsave(&card->ip_lock, flags);
435 tbd_list = card->ip_tbd_list;
436 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
437 if (!card->ip_tbd_list) {
438 QETH_DBF_TEXT(TRACE, 0, "silnomem");
439 card->ip_tbd_list = tbd_list;
440 spin_unlock_irqrestore(&card->ip_lock, flags);
441 return;
442 } else
443 INIT_LIST_HEAD(card->ip_tbd_list);
444
445 while (!list_empty(tbd_list)) {
446 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
447 list_del(&todo->entry);
448 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
449 __qeth_l3_delete_all_mc(card, &flags);
450 kfree(todo);
451 continue;
452 }
453 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
454 if (rc == 0) {
455 /* nothing to be done; only adjusted refcount */
456 kfree(todo);
457 } else if (rc == 1) {
458 /* new entry to be added to on-card list */
459 spin_unlock_irqrestore(&card->ip_lock, flags);
460 rc = qeth_l3_register_addr_entry(card, todo);
461 spin_lock_irqsave(&card->ip_lock, flags);
462 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
463 list_add_tail(&todo->entry, &card->ip_list);
464 else
465 kfree(todo);
466 } else if (rc == -1) {
467 /* on-card entry to be removed */
468 list_del_init(&addr->entry);
469 spin_unlock_irqrestore(&card->ip_lock, flags);
470 rc = qeth_l3_deregister_addr_entry(card, addr);
471 spin_lock_irqsave(&card->ip_lock, flags);
472 if (!rc || (rc == IPA_RC_PRIMARY_ALREADY_DEFINED))
473 kfree(addr);
474 else
475 list_add_tail(&addr->entry, &card->ip_list);
476 kfree(todo);
477 }
478 }
479 spin_unlock_irqrestore(&card->ip_lock, flags);
480 kfree(tbd_list);
481 }
482
483 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
484 int recover)
485 {
486 struct qeth_ipaddr *addr, *tmp;
487 unsigned long flags;
488
489 QETH_DBF_TEXT(TRACE, 4, "clearip");
490 spin_lock_irqsave(&card->ip_lock, flags);
491 /* clear todo list */
492 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
493 list_del(&addr->entry);
494 kfree(addr);
495 }
496
497 while (!list_empty(&card->ip_list)) {
498 addr = list_entry(card->ip_list.next,
499 struct qeth_ipaddr, entry);
500 list_del_init(&addr->entry);
501 if (clean) {
502 spin_unlock_irqrestore(&card->ip_lock, flags);
503 qeth_l3_deregister_addr_entry(card, addr);
504 spin_lock_irqsave(&card->ip_lock, flags);
505 }
506 if (!recover || addr->is_multicast) {
507 kfree(addr);
508 continue;
509 }
510 list_add_tail(&addr->entry, card->ip_tbd_list);
511 }
512 spin_unlock_irqrestore(&card->ip_lock, flags);
513 }
514
515 static int qeth_l3_address_exists_in_list(struct list_head *list,
516 struct qeth_ipaddr *addr, int same_type)
517 {
518 struct qeth_ipaddr *tmp;
519
520 list_for_each_entry(tmp, list, entry) {
521 if ((tmp->proto == QETH_PROT_IPV4) &&
522 (addr->proto == QETH_PROT_IPV4) &&
523 ((same_type && (tmp->type == addr->type)) ||
524 (!same_type && (tmp->type != addr->type))) &&
525 (tmp->u.a4.addr == addr->u.a4.addr))
526 return 1;
527
528 if ((tmp->proto == QETH_PROT_IPV6) &&
529 (addr->proto == QETH_PROT_IPV6) &&
530 ((same_type && (tmp->type == addr->type)) ||
531 (!same_type && (tmp->type != addr->type))) &&
532 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
533 sizeof(struct in6_addr)) == 0))
534 return 1;
535
536 }
537 return 0;
538 }
539
540 static int qeth_l3_send_setdelmc(struct qeth_card *card,
541 struct qeth_ipaddr *addr, int ipacmd)
542 {
543 int rc;
544 struct qeth_cmd_buffer *iob;
545 struct qeth_ipa_cmd *cmd;
546
547 QETH_DBF_TEXT(TRACE, 4, "setdelmc");
548
549 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
550 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
551 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
552 if (addr->proto == QETH_PROT_IPV6)
553 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
554 sizeof(struct in6_addr));
555 else
556 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
557
558 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
559
560 return rc;
561 }
562
563 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
564 {
565 int i, j;
566 for (i = 0; i < 16; i++) {
567 j = (len) - (i * 8);
568 if (j >= 8)
569 netmask[i] = 0xff;
570 else if (j > 0)
571 netmask[i] = (u8)(0xFF00 >> j);
572 else
573 netmask[i] = 0;
574 }
575 }
576
577 static int qeth_l3_send_setdelip(struct qeth_card *card,
578 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
579 {
580 int rc;
581 struct qeth_cmd_buffer *iob;
582 struct qeth_ipa_cmd *cmd;
583 __u8 netmask[16];
584
585 QETH_DBF_TEXT(TRACE, 4, "setdelip");
586 QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
587
588 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
589 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
590 if (addr->proto == QETH_PROT_IPV6) {
591 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
592 sizeof(struct in6_addr));
593 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
594 memcpy(cmd->data.setdelip6.mask, netmask,
595 sizeof(struct in6_addr));
596 cmd->data.setdelip6.flags = flags;
597 } else {
598 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
599 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
600 cmd->data.setdelip4.flags = flags;
601 }
602
603 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
604
605 return rc;
606 }
607
608 static int qeth_l3_send_setrouting(struct qeth_card *card,
609 enum qeth_routing_types type, enum qeth_prot_versions prot)
610 {
611 int rc;
612 struct qeth_ipa_cmd *cmd;
613 struct qeth_cmd_buffer *iob;
614
615 QETH_DBF_TEXT(TRACE, 4, "setroutg");
616 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
617 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
618 cmd->data.setrtg.type = (type);
619 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
620
621 return rc;
622 }
623
624 static void qeth_l3_correct_routing_type(struct qeth_card *card,
625 enum qeth_routing_types *type, enum qeth_prot_versions prot)
626 {
627 if (card->info.type == QETH_CARD_TYPE_IQD) {
628 switch (*type) {
629 case NO_ROUTER:
630 case PRIMARY_CONNECTOR:
631 case SECONDARY_CONNECTOR:
632 case MULTICAST_ROUTER:
633 return;
634 default:
635 goto out_inval;
636 }
637 } else {
638 switch (*type) {
639 case NO_ROUTER:
640 case PRIMARY_ROUTER:
641 case SECONDARY_ROUTER:
642 return;
643 case MULTICAST_ROUTER:
644 if (qeth_is_ipafunc_supported(card, prot,
645 IPA_OSA_MC_ROUTER))
646 return;
647 default:
648 goto out_inval;
649 }
650 }
651 out_inval:
652 *type = NO_ROUTER;
653 }
654
655 int qeth_l3_setrouting_v4(struct qeth_card *card)
656 {
657 int rc;
658
659 QETH_DBF_TEXT(TRACE, 3, "setrtg4");
660
661 qeth_l3_correct_routing_type(card, &card->options.route4.type,
662 QETH_PROT_IPV4);
663
664 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
665 QETH_PROT_IPV4);
666 if (rc) {
667 card->options.route4.type = NO_ROUTER;
668 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
669 " on %s. Type set to 'no router'.\n", rc,
670 QETH_CARD_IFNAME(card));
671 }
672 return rc;
673 }
674
675 int qeth_l3_setrouting_v6(struct qeth_card *card)
676 {
677 int rc = 0;
678
679 QETH_DBF_TEXT(TRACE, 3, "setrtg6");
680 #ifdef CONFIG_QETH_IPV6
681
682 if (!qeth_is_supported(card, IPA_IPV6))
683 return 0;
684 qeth_l3_correct_routing_type(card, &card->options.route6.type,
685 QETH_PROT_IPV6);
686
687 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
688 QETH_PROT_IPV6);
689 if (rc) {
690 card->options.route6.type = NO_ROUTER;
691 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
692 " on %s. Type set to 'no router'.\n", rc,
693 QETH_CARD_IFNAME(card));
694 }
695 #endif
696 return rc;
697 }
698
699 /*
700 * IP address takeover related functions
701 */
702 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
703 {
704
705 struct qeth_ipato_entry *ipatoe, *tmp;
706 unsigned long flags;
707
708 spin_lock_irqsave(&card->ip_lock, flags);
709 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
710 list_del(&ipatoe->entry);
711 kfree(ipatoe);
712 }
713 spin_unlock_irqrestore(&card->ip_lock, flags);
714 }
715
716 int qeth_l3_add_ipato_entry(struct qeth_card *card,
717 struct qeth_ipato_entry *new)
718 {
719 struct qeth_ipato_entry *ipatoe;
720 unsigned long flags;
721 int rc = 0;
722
723 QETH_DBF_TEXT(TRACE, 2, "addipato");
724 spin_lock_irqsave(&card->ip_lock, flags);
725 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
726 if (ipatoe->proto != new->proto)
727 continue;
728 if (!memcmp(ipatoe->addr, new->addr,
729 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
730 (ipatoe->mask_bits == new->mask_bits)) {
731 rc = -EEXIST;
732 break;
733 }
734 }
735 if (!rc)
736 list_add_tail(&new->entry, &card->ipato.entries);
737
738 spin_unlock_irqrestore(&card->ip_lock, flags);
739 return rc;
740 }
741
742 void qeth_l3_del_ipato_entry(struct qeth_card *card,
743 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
744 {
745 struct qeth_ipato_entry *ipatoe, *tmp;
746 unsigned long flags;
747
748 QETH_DBF_TEXT(TRACE, 2, "delipato");
749 spin_lock_irqsave(&card->ip_lock, flags);
750 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
751 if (ipatoe->proto != proto)
752 continue;
753 if (!memcmp(ipatoe->addr, addr,
754 (proto == QETH_PROT_IPV4)? 4:16) &&
755 (ipatoe->mask_bits == mask_bits)) {
756 list_del(&ipatoe->entry);
757 kfree(ipatoe);
758 }
759 }
760 spin_unlock_irqrestore(&card->ip_lock, flags);
761 }
762
763 /*
764 * VIPA related functions
765 */
766 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
767 const u8 *addr)
768 {
769 struct qeth_ipaddr *ipaddr;
770 unsigned long flags;
771 int rc = 0;
772
773 ipaddr = qeth_l3_get_addr_buffer(proto);
774 if (ipaddr) {
775 if (proto == QETH_PROT_IPV4) {
776 QETH_DBF_TEXT(TRACE, 2, "addvipa4");
777 memcpy(&ipaddr->u.a4.addr, addr, 4);
778 ipaddr->u.a4.mask = 0;
779 } else if (proto == QETH_PROT_IPV6) {
780 QETH_DBF_TEXT(TRACE, 2, "addvipa6");
781 memcpy(&ipaddr->u.a6.addr, addr, 16);
782 ipaddr->u.a6.pfxlen = 0;
783 }
784 ipaddr->type = QETH_IP_TYPE_VIPA;
785 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
786 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
787 } else
788 return -ENOMEM;
789 spin_lock_irqsave(&card->ip_lock, flags);
790 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
791 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
792 rc = -EEXIST;
793 spin_unlock_irqrestore(&card->ip_lock, flags);
794 if (rc) {
795 return rc;
796 }
797 if (!qeth_l3_add_ip(card, ipaddr))
798 kfree(ipaddr);
799 qeth_l3_set_ip_addr_list(card);
800 return rc;
801 }
802
803 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
804 const u8 *addr)
805 {
806 struct qeth_ipaddr *ipaddr;
807
808 ipaddr = qeth_l3_get_addr_buffer(proto);
809 if (ipaddr) {
810 if (proto == QETH_PROT_IPV4) {
811 QETH_DBF_TEXT(TRACE, 2, "delvipa4");
812 memcpy(&ipaddr->u.a4.addr, addr, 4);
813 ipaddr->u.a4.mask = 0;
814 } else if (proto == QETH_PROT_IPV6) {
815 QETH_DBF_TEXT(TRACE, 2, "delvipa6");
816 memcpy(&ipaddr->u.a6.addr, addr, 16);
817 ipaddr->u.a6.pfxlen = 0;
818 }
819 ipaddr->type = QETH_IP_TYPE_VIPA;
820 } else
821 return;
822 if (!qeth_l3_delete_ip(card, ipaddr))
823 kfree(ipaddr);
824 qeth_l3_set_ip_addr_list(card);
825 }
826
827 /*
828 * proxy ARP related functions
829 */
830 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
831 const u8 *addr)
832 {
833 struct qeth_ipaddr *ipaddr;
834 unsigned long flags;
835 int rc = 0;
836
837 ipaddr = qeth_l3_get_addr_buffer(proto);
838 if (ipaddr) {
839 if (proto == QETH_PROT_IPV4) {
840 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
841 memcpy(&ipaddr->u.a4.addr, addr, 4);
842 ipaddr->u.a4.mask = 0;
843 } else if (proto == QETH_PROT_IPV6) {
844 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
845 memcpy(&ipaddr->u.a6.addr, addr, 16);
846 ipaddr->u.a6.pfxlen = 0;
847 }
848 ipaddr->type = QETH_IP_TYPE_RXIP;
849 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
850 ipaddr->del_flags = 0;
851 } else
852 return -ENOMEM;
853 spin_lock_irqsave(&card->ip_lock, flags);
854 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
855 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
856 rc = -EEXIST;
857 spin_unlock_irqrestore(&card->ip_lock, flags);
858 if (rc) {
859 return rc;
860 }
861 if (!qeth_l3_add_ip(card, ipaddr))
862 kfree(ipaddr);
863 qeth_l3_set_ip_addr_list(card);
864 return 0;
865 }
866
867 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
868 const u8 *addr)
869 {
870 struct qeth_ipaddr *ipaddr;
871
872 ipaddr = qeth_l3_get_addr_buffer(proto);
873 if (ipaddr) {
874 if (proto == QETH_PROT_IPV4) {
875 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
876 memcpy(&ipaddr->u.a4.addr, addr, 4);
877 ipaddr->u.a4.mask = 0;
878 } else if (proto == QETH_PROT_IPV6) {
879 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
880 memcpy(&ipaddr->u.a6.addr, addr, 16);
881 ipaddr->u.a6.pfxlen = 0;
882 }
883 ipaddr->type = QETH_IP_TYPE_RXIP;
884 } else
885 return;
886 if (!qeth_l3_delete_ip(card, ipaddr))
887 kfree(ipaddr);
888 qeth_l3_set_ip_addr_list(card);
889 }
890
891 static int qeth_l3_register_addr_entry(struct qeth_card *card,
892 struct qeth_ipaddr *addr)
893 {
894 char buf[50];
895 int rc = 0;
896 int cnt = 3;
897
898 if (addr->proto == QETH_PROT_IPV4) {
899 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
900 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
901 } else if (addr->proto == QETH_PROT_IPV6) {
902 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
903 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
904 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
905 } else {
906 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
907 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
908 }
909 do {
910 if (addr->is_multicast)
911 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
912 else
913 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
914 addr->set_flags);
915 if (rc)
916 QETH_DBF_TEXT(TRACE, 2, "failed");
917 } while ((--cnt > 0) && rc);
918 if (rc) {
919 QETH_DBF_TEXT(TRACE, 2, "FAILED");
920 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
921 dev_warn(&card->gdev->dev,
922 "Registering IP address %s failed\n", buf);
923 }
924 return rc;
925 }
926
927 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
928 struct qeth_ipaddr *addr)
929 {
930 int rc = 0;
931
932 if (addr->proto == QETH_PROT_IPV4) {
933 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
934 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
935 } else if (addr->proto == QETH_PROT_IPV6) {
936 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
937 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
938 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
939 } else {
940 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
941 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
942 }
943 if (addr->is_multicast)
944 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
945 else
946 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
947 addr->del_flags);
948 if (rc)
949 QETH_DBF_TEXT(TRACE, 2, "failed");
950
951 return rc;
952 }
953
954 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
955 {
956 if (cast_type == RTN_MULTICAST)
957 return QETH_CAST_MULTICAST;
958 if (cast_type == RTN_BROADCAST)
959 return QETH_CAST_BROADCAST;
960 return QETH_CAST_UNICAST;
961 }
962
963 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
964 {
965 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
966 if (cast_type == RTN_MULTICAST)
967 return ct | QETH_CAST_MULTICAST;
968 if (cast_type == RTN_ANYCAST)
969 return ct | QETH_CAST_ANYCAST;
970 if (cast_type == RTN_BROADCAST)
971 return ct | QETH_CAST_BROADCAST;
972 return ct | QETH_CAST_UNICAST;
973 }
974
975 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
976 __u32 mode)
977 {
978 int rc;
979 struct qeth_cmd_buffer *iob;
980 struct qeth_ipa_cmd *cmd;
981
982 QETH_DBF_TEXT(TRACE, 4, "adpmode");
983
984 iob = qeth_get_adapter_cmd(card, command,
985 sizeof(struct qeth_ipacmd_setadpparms));
986 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
987 cmd->data.setadapterparms.data.mode = mode;
988 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
989 NULL);
990 return rc;
991 }
992
993 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
994 {
995 int rc;
996
997 QETH_DBF_TEXT(TRACE, 4, "adphstr");
998
999 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1000 rc = qeth_l3_send_setadp_mode(card,
1001 IPA_SETADP_SET_BROADCAST_MODE,
1002 card->options.broadcast_mode);
1003 if (rc)
1004 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1005 "device %s: x%x\n",
1006 CARD_BUS_ID(card), rc);
1007 rc = qeth_l3_send_setadp_mode(card,
1008 IPA_SETADP_ALTER_MAC_ADDRESS,
1009 card->options.macaddr_mode);
1010 if (rc)
1011 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1012 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1013 return rc;
1014 }
1015 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1016 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1017 "to set broadcast mode, using ALLRINGS "
1018 "on device %s:\n", CARD_BUS_ID(card));
1019 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1020 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1021 "to set macaddr mode, using NONCANONICAL "
1022 "on device %s:\n", CARD_BUS_ID(card));
1023 return 0;
1024 }
1025
1026 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1027 {
1028 int rc;
1029
1030 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1031
1032 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1033 dev_info(&card->gdev->dev,
1034 "set adapter parameters not supported.\n");
1035 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1036 return 0;
1037 }
1038 rc = qeth_query_setadapterparms(card);
1039 if (rc) {
1040 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1041 "0x%x\n", dev_name(&card->gdev->dev), rc);
1042 return rc;
1043 }
1044 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1045 rc = qeth_setadpparms_change_macaddr(card);
1046 if (rc)
1047 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1048 " address failed\n");
1049 }
1050
1051 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1052 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1053 rc = qeth_l3_setadapter_hstr(card);
1054
1055 return rc;
1056 }
1057
1058 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1059 struct qeth_reply *reply, unsigned long data)
1060 {
1061 struct qeth_ipa_cmd *cmd;
1062
1063 QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1064
1065 cmd = (struct qeth_ipa_cmd *) data;
1066 if (cmd->hdr.return_code == 0) {
1067 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1068 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1069 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1070 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1071 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1072 }
1073 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1074 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1075 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1076 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1077 }
1078 return 0;
1079 }
1080
1081 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1082 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1083 __u16 len, enum qeth_prot_versions prot)
1084 {
1085 struct qeth_cmd_buffer *iob;
1086 struct qeth_ipa_cmd *cmd;
1087
1088 QETH_DBF_TEXT(TRACE, 4, "getasscm");
1089 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1090
1091 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1092 cmd->data.setassparms.hdr.assist_no = ipa_func;
1093 cmd->data.setassparms.hdr.length = 8 + len;
1094 cmd->data.setassparms.hdr.command_code = cmd_code;
1095 cmd->data.setassparms.hdr.return_code = 0;
1096 cmd->data.setassparms.hdr.seq_no = 0;
1097
1098 return iob;
1099 }
1100
1101 static int qeth_l3_send_setassparms(struct qeth_card *card,
1102 struct qeth_cmd_buffer *iob, __u16 len, long data,
1103 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1104 unsigned long),
1105 void *reply_param)
1106 {
1107 int rc;
1108 struct qeth_ipa_cmd *cmd;
1109
1110 QETH_DBF_TEXT(TRACE, 4, "sendassp");
1111
1112 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1113 if (len <= sizeof(__u32))
1114 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1115 else /* (len > sizeof(__u32)) */
1116 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1117
1118 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1119 return rc;
1120 }
1121
1122 #ifdef CONFIG_QETH_IPV6
1123 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1124 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1125 {
1126 int rc;
1127 struct qeth_cmd_buffer *iob;
1128
1129 QETH_DBF_TEXT(TRACE, 4, "simassp6");
1130 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1131 0, QETH_PROT_IPV6);
1132 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1133 qeth_l3_default_setassparms_cb, NULL);
1134 return rc;
1135 }
1136 #endif
1137
1138 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1139 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1140 {
1141 int rc;
1142 int length = 0;
1143 struct qeth_cmd_buffer *iob;
1144
1145 QETH_DBF_TEXT(TRACE, 4, "simassp4");
1146 if (data)
1147 length = sizeof(__u32);
1148 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1149 length, QETH_PROT_IPV4);
1150 rc = qeth_l3_send_setassparms(card, iob, length, data,
1151 qeth_l3_default_setassparms_cb, NULL);
1152 return rc;
1153 }
1154
1155 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1156 {
1157 int rc;
1158
1159 QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1160
1161 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1162 dev_info(&card->gdev->dev,
1163 "ARP processing not supported on %s!\n",
1164 QETH_CARD_IFNAME(card));
1165 return 0;
1166 }
1167 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1168 IPA_CMD_ASS_START, 0);
1169 if (rc) {
1170 dev_warn(&card->gdev->dev,
1171 "Starting ARP processing support for %s failed\n",
1172 QETH_CARD_IFNAME(card));
1173 }
1174 return rc;
1175 }
1176
1177 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1178 {
1179 int rc;
1180
1181 QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1182
1183 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1184 dev_info(&card->gdev->dev,
1185 "Hardware IP fragmentation not supported on %s\n",
1186 QETH_CARD_IFNAME(card));
1187 return -EOPNOTSUPP;
1188 }
1189
1190 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1191 IPA_CMD_ASS_START, 0);
1192 if (rc) {
1193 dev_warn(&card->gdev->dev,
1194 "Starting IP fragmentation support for %s failed\n",
1195 QETH_CARD_IFNAME(card));
1196 } else
1197 dev_info(&card->gdev->dev,
1198 "Hardware IP fragmentation enabled \n");
1199 return rc;
1200 }
1201
1202 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1203 {
1204 int rc;
1205
1206 QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1207
1208 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1209 dev_info(&card->gdev->dev,
1210 "Inbound source MAC-address not supported on %s\n",
1211 QETH_CARD_IFNAME(card));
1212 return -EOPNOTSUPP;
1213 }
1214
1215 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1216 IPA_CMD_ASS_START, 0);
1217 if (rc)
1218 dev_warn(&card->gdev->dev,
1219 "Starting source MAC-address support for %s failed\n",
1220 QETH_CARD_IFNAME(card));
1221 return rc;
1222 }
1223
1224 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1225 {
1226 int rc = 0;
1227
1228 QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1229
1230 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1231 dev_info(&card->gdev->dev,
1232 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1233 return -EOPNOTSUPP;
1234 }
1235
1236 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1237 IPA_CMD_ASS_START, 0);
1238 if (rc) {
1239 dev_warn(&card->gdev->dev,
1240 "Starting VLAN support for %s failed\n",
1241 QETH_CARD_IFNAME(card));
1242 } else {
1243 dev_info(&card->gdev->dev, "VLAN enabled\n");
1244 }
1245 return rc;
1246 }
1247
1248 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1249 {
1250 int rc;
1251
1252 QETH_DBF_TEXT(TRACE, 3, "stmcast");
1253
1254 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1255 dev_info(&card->gdev->dev,
1256 "Multicast not supported on %s\n",
1257 QETH_CARD_IFNAME(card));
1258 return -EOPNOTSUPP;
1259 }
1260
1261 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1262 IPA_CMD_ASS_START, 0);
1263 if (rc) {
1264 dev_warn(&card->gdev->dev,
1265 "Starting multicast support for %s failed\n",
1266 QETH_CARD_IFNAME(card));
1267 } else {
1268 dev_info(&card->gdev->dev, "Multicast enabled\n");
1269 card->dev->flags |= IFF_MULTICAST;
1270 }
1271 return rc;
1272 }
1273
1274 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1275 struct qeth_reply *reply, unsigned long data)
1276 {
1277 struct qeth_ipa_cmd *cmd;
1278
1279 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1280
1281 cmd = (struct qeth_ipa_cmd *) data;
1282 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1283 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1284 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1285 } else {
1286 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1287 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1288 }
1289 QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1290 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1291 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1292 return 0;
1293 }
1294
1295 static int qeth_l3_query_ipassists(struct qeth_card *card,
1296 enum qeth_prot_versions prot)
1297 {
1298 int rc;
1299 struct qeth_cmd_buffer *iob;
1300
1301 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1302 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1303 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1304 return rc;
1305 }
1306
1307 #ifdef CONFIG_QETH_IPV6
1308 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1309 {
1310 int rc;
1311
1312 QETH_DBF_TEXT(TRACE, 3, "softipv6");
1313
1314 if (card->info.type == QETH_CARD_TYPE_IQD)
1315 goto out;
1316
1317 rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1318 if (rc) {
1319 dev_err(&card->gdev->dev,
1320 "Activating IPv6 support for %s failed\n",
1321 QETH_CARD_IFNAME(card));
1322 return rc;
1323 }
1324 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1325 IPA_CMD_ASS_START, 3);
1326 if (rc) {
1327 dev_err(&card->gdev->dev,
1328 "Activating IPv6 support for %s failed\n",
1329 QETH_CARD_IFNAME(card));
1330 return rc;
1331 }
1332 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1333 IPA_CMD_ASS_START);
1334 if (rc) {
1335 dev_err(&card->gdev->dev,
1336 "Activating IPv6 support for %s failed\n",
1337 QETH_CARD_IFNAME(card));
1338 return rc;
1339 }
1340 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1341 IPA_CMD_ASS_START);
1342 if (rc) {
1343 dev_warn(&card->gdev->dev,
1344 "Enabling the passthrough mode for %s failed\n",
1345 QETH_CARD_IFNAME(card));
1346 return rc;
1347 }
1348 out:
1349 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1350 return 0;
1351 }
1352 #endif
1353
1354 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1355 {
1356 int rc = 0;
1357
1358 QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1359
1360 if (!qeth_is_supported(card, IPA_IPV6)) {
1361 dev_info(&card->gdev->dev,
1362 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1363 return 0;
1364 }
1365 #ifdef CONFIG_QETH_IPV6
1366 rc = qeth_l3_softsetup_ipv6(card);
1367 #endif
1368 return rc ;
1369 }
1370
1371 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1372 {
1373 int rc;
1374
1375 QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1376 card->info.broadcast_capable = 0;
1377 if (!qeth_is_supported(card, IPA_FILTERING)) {
1378 dev_info(&card->gdev->dev,
1379 "Broadcast not supported on %s\n",
1380 QETH_CARD_IFNAME(card));
1381 rc = -EOPNOTSUPP;
1382 goto out;
1383 }
1384 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1385 IPA_CMD_ASS_START, 0);
1386 if (rc) {
1387 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1388 "%s failed\n", QETH_CARD_IFNAME(card));
1389 goto out;
1390 }
1391
1392 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1393 IPA_CMD_ASS_CONFIGURE, 1);
1394 if (rc) {
1395 dev_warn(&card->gdev->dev,
1396 "Setting up broadcast filtering for %s failed\n",
1397 QETH_CARD_IFNAME(card));
1398 goto out;
1399 }
1400 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1401 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1402 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1403 IPA_CMD_ASS_ENABLE, 1);
1404 if (rc) {
1405 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1406 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1407 goto out;
1408 }
1409 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1410 out:
1411 if (card->info.broadcast_capable)
1412 card->dev->flags |= IFF_BROADCAST;
1413 else
1414 card->dev->flags &= ~IFF_BROADCAST;
1415 return rc;
1416 }
1417
1418 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1419 {
1420 int rc;
1421
1422 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1423 IPA_CMD_ASS_START, 0);
1424 if (rc) {
1425 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1426 "failed, using SW checksumming\n",
1427 QETH_CARD_IFNAME(card));
1428 return rc;
1429 }
1430 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1431 IPA_CMD_ASS_ENABLE,
1432 card->info.csum_mask);
1433 if (rc) {
1434 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1435 "failed, using SW checksumming\n",
1436 QETH_CARD_IFNAME(card));
1437 return rc;
1438 }
1439 return 0;
1440 }
1441
1442 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1443 {
1444 int rc = 0;
1445
1446 QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1447
1448 if (card->options.checksum_type == NO_CHECKSUMMING) {
1449 dev_info(&card->gdev->dev,
1450 "Using no checksumming on %s.\n",
1451 QETH_CARD_IFNAME(card));
1452 return 0;
1453 }
1454 if (card->options.checksum_type == SW_CHECKSUMMING) {
1455 dev_info(&card->gdev->dev,
1456 "Using SW checksumming on %s.\n",
1457 QETH_CARD_IFNAME(card));
1458 return 0;
1459 }
1460 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1461 dev_info(&card->gdev->dev,
1462 "Inbound HW Checksumming not "
1463 "supported on %s,\ncontinuing "
1464 "using Inbound SW Checksumming\n",
1465 QETH_CARD_IFNAME(card));
1466 card->options.checksum_type = SW_CHECKSUMMING;
1467 return 0;
1468 }
1469 rc = qeth_l3_send_checksum_command(card);
1470 if (!rc)
1471 dev_info(&card->gdev->dev,
1472 "HW Checksumming (inbound) enabled\n");
1473
1474 return rc;
1475 }
1476
1477 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1478 {
1479 int rc;
1480
1481 QETH_DBF_TEXT(TRACE, 3, "sttso");
1482
1483 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1484 dev_info(&card->gdev->dev,
1485 "Outbound TSO not supported on %s\n",
1486 QETH_CARD_IFNAME(card));
1487 rc = -EOPNOTSUPP;
1488 } else {
1489 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1490 IPA_CMD_ASS_START, 0);
1491 if (rc)
1492 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1493 "segmentation offload for %s failed\n",
1494 QETH_CARD_IFNAME(card));
1495 else
1496 dev_info(&card->gdev->dev,
1497 "Outbound TSO enabled\n");
1498 }
1499 if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1500 card->options.large_send = QETH_LARGE_SEND_NO;
1501 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1502 }
1503 return rc;
1504 }
1505
1506 static int qeth_l3_start_ipassists(struct qeth_card *card)
1507 {
1508 QETH_DBF_TEXT(TRACE, 3, "strtipas");
1509 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1510 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1511 qeth_l3_start_ipa_source_mac(card); /* go on*/
1512 qeth_l3_start_ipa_vlan(card); /* go on*/
1513 qeth_l3_start_ipa_multicast(card); /* go on*/
1514 qeth_l3_start_ipa_ipv6(card); /* go on*/
1515 qeth_l3_start_ipa_broadcast(card); /* go on*/
1516 qeth_l3_start_ipa_checksum(card); /* go on*/
1517 qeth_l3_start_ipa_tso(card); /* go on*/
1518 return 0;
1519 }
1520
1521 static int qeth_l3_put_unique_id(struct qeth_card *card)
1522 {
1523
1524 int rc = 0;
1525 struct qeth_cmd_buffer *iob;
1526 struct qeth_ipa_cmd *cmd;
1527
1528 QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1529
1530 if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1531 UNIQUE_ID_NOT_BY_CARD)
1532 return -1;
1533 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1534 QETH_PROT_IPV6);
1535 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1536 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1537 card->info.unique_id;
1538 memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1539 card->dev->dev_addr, OSA_ADDR_LEN);
1540 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1541 return rc;
1542 }
1543
1544 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1545 struct qeth_reply *reply, unsigned long data)
1546 {
1547 struct qeth_ipa_cmd *cmd;
1548
1549 cmd = (struct qeth_ipa_cmd *) data;
1550 if (cmd->hdr.return_code == 0)
1551 memcpy(card->dev->dev_addr,
1552 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1553 else
1554 random_ether_addr(card->dev->dev_addr);
1555
1556 return 0;
1557 }
1558
1559 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1560 {
1561 int rc = 0;
1562 struct qeth_cmd_buffer *iob;
1563 struct qeth_ipa_cmd *cmd;
1564
1565 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1566
1567 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1568 QETH_PROT_IPV6);
1569 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1570 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1571 card->info.unique_id;
1572
1573 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1574 NULL);
1575 return rc;
1576 }
1577
1578 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1579 struct qeth_reply *reply, unsigned long data)
1580 {
1581 struct qeth_ipa_cmd *cmd;
1582
1583 cmd = (struct qeth_ipa_cmd *) data;
1584 if (cmd->hdr.return_code == 0)
1585 card->info.unique_id = *((__u16 *)
1586 &cmd->data.create_destroy_addr.unique_id[6]);
1587 else {
1588 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1589 UNIQUE_ID_NOT_BY_CARD;
1590 dev_warn(&card->gdev->dev, "The network adapter failed to "
1591 "generate a unique ID\n");
1592 }
1593 return 0;
1594 }
1595
1596 static int qeth_l3_get_unique_id(struct qeth_card *card)
1597 {
1598 int rc = 0;
1599 struct qeth_cmd_buffer *iob;
1600 struct qeth_ipa_cmd *cmd;
1601
1602 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1603
1604 if (!qeth_is_supported(card, IPA_IPV6)) {
1605 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1606 UNIQUE_ID_NOT_BY_CARD;
1607 return 0;
1608 }
1609
1610 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1611 QETH_PROT_IPV6);
1612 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1613 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1614 card->info.unique_id;
1615
1616 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1617 return rc;
1618 }
1619
1620 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1621 struct net_device *dev)
1622 {
1623 if (dev->type == ARPHRD_IEEE802_TR)
1624 ip_tr_mc_map(ipm, mac);
1625 else
1626 ip_eth_mc_map(ipm, mac);
1627 }
1628
1629 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1630 {
1631 struct qeth_ipaddr *ipm;
1632 struct ip_mc_list *im4;
1633 char buf[MAX_ADDR_LEN];
1634
1635 QETH_DBF_TEXT(TRACE, 4, "addmc");
1636 for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1637 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1638 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1639 if (!ipm)
1640 continue;
1641 ipm->u.a4.addr = im4->multiaddr;
1642 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1643 ipm->is_multicast = 1;
1644 if (!qeth_l3_add_ip(card, ipm))
1645 kfree(ipm);
1646 }
1647 }
1648
1649 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1650 {
1651 struct in_device *in_dev;
1652 struct vlan_group *vg;
1653 int i;
1654
1655 QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1656 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1657 return;
1658
1659 vg = card->vlangrp;
1660 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1661 struct net_device *netdev = vlan_group_get_device(vg, i);
1662 if (netdev == NULL ||
1663 !(netdev->flags & IFF_UP))
1664 continue;
1665 in_dev = in_dev_get(netdev);
1666 if (!in_dev)
1667 continue;
1668 read_lock(&in_dev->mc_list_lock);
1669 qeth_l3_add_mc(card, in_dev);
1670 read_unlock(&in_dev->mc_list_lock);
1671 in_dev_put(in_dev);
1672 }
1673 }
1674
1675 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1676 {
1677 struct in_device *in4_dev;
1678
1679 QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1680 in4_dev = in_dev_get(card->dev);
1681 if (in4_dev == NULL)
1682 return;
1683 read_lock(&in4_dev->mc_list_lock);
1684 qeth_l3_add_mc(card, in4_dev);
1685 qeth_l3_add_vlan_mc(card);
1686 read_unlock(&in4_dev->mc_list_lock);
1687 in_dev_put(in4_dev);
1688 }
1689
1690 #ifdef CONFIG_QETH_IPV6
1691 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1692 {
1693 struct qeth_ipaddr *ipm;
1694 struct ifmcaddr6 *im6;
1695 char buf[MAX_ADDR_LEN];
1696
1697 QETH_DBF_TEXT(TRACE, 4, "addmc6");
1698 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1699 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1700 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1701 if (!ipm)
1702 continue;
1703 ipm->is_multicast = 1;
1704 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1705 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1706 sizeof(struct in6_addr));
1707 if (!qeth_l3_add_ip(card, ipm))
1708 kfree(ipm);
1709 }
1710 }
1711
1712 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1713 {
1714 struct inet6_dev *in_dev;
1715 struct vlan_group *vg;
1716 int i;
1717
1718 QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1719 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1720 return;
1721
1722 vg = card->vlangrp;
1723 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1724 struct net_device *netdev = vlan_group_get_device(vg, i);
1725 if (netdev == NULL ||
1726 !(netdev->flags & IFF_UP))
1727 continue;
1728 in_dev = in6_dev_get(netdev);
1729 if (!in_dev)
1730 continue;
1731 read_lock_bh(&in_dev->lock);
1732 qeth_l3_add_mc6(card, in_dev);
1733 read_unlock_bh(&in_dev->lock);
1734 in6_dev_put(in_dev);
1735 }
1736 }
1737
1738 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1739 {
1740 struct inet6_dev *in6_dev;
1741
1742 QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1743 if (!qeth_is_supported(card, IPA_IPV6))
1744 return ;
1745 in6_dev = in6_dev_get(card->dev);
1746 if (in6_dev == NULL)
1747 return;
1748 read_lock_bh(&in6_dev->lock);
1749 qeth_l3_add_mc6(card, in6_dev);
1750 qeth_l3_add_vlan_mc6(card);
1751 read_unlock_bh(&in6_dev->lock);
1752 in6_dev_put(in6_dev);
1753 }
1754 #endif /* CONFIG_QETH_IPV6 */
1755
1756 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1757 unsigned short vid)
1758 {
1759 struct in_device *in_dev;
1760 struct in_ifaddr *ifa;
1761 struct qeth_ipaddr *addr;
1762
1763 QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1764
1765 in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1766 if (!in_dev)
1767 return;
1768 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1769 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1770 if (addr) {
1771 addr->u.a4.addr = ifa->ifa_address;
1772 addr->u.a4.mask = ifa->ifa_mask;
1773 addr->type = QETH_IP_TYPE_NORMAL;
1774 if (!qeth_l3_delete_ip(card, addr))
1775 kfree(addr);
1776 }
1777 }
1778 in_dev_put(in_dev);
1779 }
1780
1781 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1782 unsigned short vid)
1783 {
1784 #ifdef CONFIG_QETH_IPV6
1785 struct inet6_dev *in6_dev;
1786 struct inet6_ifaddr *ifa;
1787 struct qeth_ipaddr *addr;
1788
1789 QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1790
1791 in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1792 if (!in6_dev)
1793 return;
1794 for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1795 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1796 if (addr) {
1797 memcpy(&addr->u.a6.addr, &ifa->addr,
1798 sizeof(struct in6_addr));
1799 addr->u.a6.pfxlen = ifa->prefix_len;
1800 addr->type = QETH_IP_TYPE_NORMAL;
1801 if (!qeth_l3_delete_ip(card, addr))
1802 kfree(addr);
1803 }
1804 }
1805 in6_dev_put(in6_dev);
1806 #endif /* CONFIG_QETH_IPV6 */
1807 }
1808
1809 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1810 unsigned short vid)
1811 {
1812 if (!card->vlangrp)
1813 return;
1814 qeth_l3_free_vlan_addresses4(card, vid);
1815 qeth_l3_free_vlan_addresses6(card, vid);
1816 }
1817
1818 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1819 struct vlan_group *grp)
1820 {
1821 struct qeth_card *card = dev->ml_priv;
1822 unsigned long flags;
1823
1824 QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1825 spin_lock_irqsave(&card->vlanlock, flags);
1826 card->vlangrp = grp;
1827 spin_unlock_irqrestore(&card->vlanlock, flags);
1828 }
1829
1830 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1831 {
1832 return;
1833 }
1834
1835 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1836 {
1837 struct qeth_card *card = dev->ml_priv;
1838 unsigned long flags;
1839
1840 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1841 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1842 QETH_DBF_TEXT(TRACE, 3, "kidREC");
1843 return;
1844 }
1845 spin_lock_irqsave(&card->vlanlock, flags);
1846 /* unregister IP addresses of vlan device */
1847 qeth_l3_free_vlan_addresses(card, vid);
1848 vlan_group_set_device(card->vlangrp, vid, NULL);
1849 spin_unlock_irqrestore(&card->vlanlock, flags);
1850 qeth_l3_set_multicast_list(card->dev);
1851 }
1852
1853 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1854 struct sk_buff *skb, struct qeth_hdr *hdr)
1855 {
1856 unsigned short vlan_id = 0;
1857 __be16 prot;
1858 struct iphdr *ip_hdr;
1859 unsigned char tg_addr[MAX_ADDR_LEN];
1860
1861 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1862 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1863 ETH_P_IP);
1864 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1865 case QETH_CAST_MULTICAST:
1866 switch (prot) {
1867 #ifdef CONFIG_QETH_IPV6
1868 case __constant_htons(ETH_P_IPV6):
1869 ndisc_mc_map((struct in6_addr *)
1870 skb->data + 24,
1871 tg_addr, card->dev, 0);
1872 break;
1873 #endif
1874 case __constant_htons(ETH_P_IP):
1875 ip_hdr = (struct iphdr *)skb->data;
1876 (card->dev->type == ARPHRD_IEEE802_TR) ?
1877 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1878 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1879 break;
1880 default:
1881 memcpy(tg_addr, card->dev->broadcast,
1882 card->dev->addr_len);
1883 }
1884 card->stats.multicast++;
1885 skb->pkt_type = PACKET_MULTICAST;
1886 break;
1887 case QETH_CAST_BROADCAST:
1888 memcpy(tg_addr, card->dev->broadcast,
1889 card->dev->addr_len);
1890 card->stats.multicast++;
1891 skb->pkt_type = PACKET_BROADCAST;
1892 break;
1893 case QETH_CAST_UNICAST:
1894 case QETH_CAST_ANYCAST:
1895 case QETH_CAST_NOCAST:
1896 default:
1897 skb->pkt_type = PACKET_HOST;
1898 memcpy(tg_addr, card->dev->dev_addr,
1899 card->dev->addr_len);
1900 }
1901 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1902 card->dev->header_ops->create(skb, card->dev, prot,
1903 tg_addr, &hdr->hdr.l3.dest_addr[2],
1904 card->dev->addr_len);
1905 else
1906 card->dev->header_ops->create(skb, card->dev, prot,
1907 tg_addr, "FAKELL", card->dev->addr_len);
1908 }
1909
1910 #ifdef CONFIG_TR
1911 if (card->dev->type == ARPHRD_IEEE802_TR)
1912 skb->protocol = tr_type_trans(skb, card->dev);
1913 else
1914 #endif
1915 skb->protocol = eth_type_trans(skb, card->dev);
1916
1917 if (hdr->hdr.l3.ext_flags &
1918 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1919 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1920 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1921 }
1922
1923 switch (card->options.checksum_type) {
1924 case SW_CHECKSUMMING:
1925 skb->ip_summed = CHECKSUM_NONE;
1926 break;
1927 case NO_CHECKSUMMING:
1928 skb->ip_summed = CHECKSUM_UNNECESSARY;
1929 break;
1930 case HW_CHECKSUMMING:
1931 if ((hdr->hdr.l3.ext_flags &
1932 (QETH_HDR_EXT_CSUM_HDR_REQ |
1933 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1934 (QETH_HDR_EXT_CSUM_HDR_REQ |
1935 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1936 skb->ip_summed = CHECKSUM_UNNECESSARY;
1937 else
1938 skb->ip_summed = CHECKSUM_NONE;
1939 }
1940
1941 return vlan_id;
1942 }
1943
1944 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
1945 struct qeth_qdio_buffer *buf, int index)
1946 {
1947 struct qdio_buffer_element *element;
1948 struct sk_buff *skb;
1949 struct qeth_hdr *hdr;
1950 int offset;
1951 __u16 vlan_tag = 0;
1952 unsigned int len;
1953
1954 /* get first element of current buffer */
1955 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
1956 offset = 0;
1957 if (card->options.performance_stats)
1958 card->perf_stats.bufs_rec++;
1959 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
1960 &offset, &hdr))) {
1961 skb->dev = card->dev;
1962 /* is device UP ? */
1963 if (!(card->dev->flags & IFF_UP)) {
1964 dev_kfree_skb_any(skb);
1965 continue;
1966 }
1967
1968 switch (hdr->hdr.l3.id) {
1969 case QETH_HEADER_TYPE_LAYER3:
1970 vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
1971 len = skb->len;
1972 if (vlan_tag)
1973 if (card->vlangrp)
1974 vlan_hwaccel_rx(skb, card->vlangrp,
1975 vlan_tag);
1976 else {
1977 dev_kfree_skb_any(skb);
1978 continue;
1979 }
1980 else
1981 netif_rx(skb);
1982 break;
1983 default:
1984 dev_kfree_skb_any(skb);
1985 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
1986 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1987 continue;
1988 }
1989
1990 card->dev->last_rx = jiffies;
1991 card->stats.rx_packets++;
1992 card->stats.rx_bytes += len;
1993 }
1994 }
1995
1996 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1997 struct qeth_card *card)
1998 {
1999 int rc = 0;
2000 struct vlan_group *vg;
2001 int i;
2002
2003 vg = card->vlangrp;
2004 if (!vg)
2005 return rc;
2006
2007 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2008 if (vlan_group_get_device(vg, i) == dev) {
2009 rc = QETH_VLAN_CARD;
2010 break;
2011 }
2012 }
2013
2014 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2015 return 0;
2016
2017 return rc;
2018 }
2019
2020 static int qeth_l3_verify_dev(struct net_device *dev)
2021 {
2022 struct qeth_card *card;
2023 unsigned long flags;
2024 int rc = 0;
2025
2026 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2027 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2028 if (card->dev == dev) {
2029 rc = QETH_REAL_CARD;
2030 break;
2031 }
2032 rc = qeth_l3_verify_vlan_dev(dev, card);
2033 if (rc)
2034 break;
2035 }
2036 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2037
2038 return rc;
2039 }
2040
2041 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2042 {
2043 struct qeth_card *card = NULL;
2044 int rc;
2045
2046 rc = qeth_l3_verify_dev(dev);
2047 if (rc == QETH_REAL_CARD)
2048 card = dev->ml_priv;
2049 else if (rc == QETH_VLAN_CARD)
2050 card = vlan_dev_real_dev(dev)->ml_priv;
2051 if (card && card->options.layer2)
2052 card = NULL;
2053 QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2054 return card ;
2055 }
2056
2057 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2058 {
2059 int rc = 0;
2060
2061 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2062 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2063
2064 qeth_set_allowed_threads(card, 0, 1);
2065 if (card->read.state == CH_STATE_UP &&
2066 card->write.state == CH_STATE_UP &&
2067 (card->state == CARD_STATE_UP)) {
2068 if (recovery_mode)
2069 qeth_l3_stop(card->dev);
2070 else {
2071 if (card->dev) {
2072 rtnl_lock();
2073 dev_close(card->dev);
2074 rtnl_unlock();
2075 }
2076 }
2077 if (!card->use_hard_stop) {
2078 rc = qeth_send_stoplan(card);
2079 if (rc)
2080 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2081 }
2082 card->state = CARD_STATE_SOFTSETUP;
2083 }
2084 if (card->state == CARD_STATE_SOFTSETUP) {
2085 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2086 qeth_clear_ipacmd_list(card);
2087 card->state = CARD_STATE_HARDSETUP;
2088 }
2089 if (card->state == CARD_STATE_HARDSETUP) {
2090 if (!card->use_hard_stop &&
2091 (card->info.type != QETH_CARD_TYPE_IQD)) {
2092 rc = qeth_l3_put_unique_id(card);
2093 if (rc)
2094 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2095 }
2096 qeth_qdio_clear_card(card, 0);
2097 qeth_clear_qdio_buffers(card);
2098 qeth_clear_working_pool_list(card);
2099 card->state = CARD_STATE_DOWN;
2100 }
2101 if (card->state == CARD_STATE_DOWN) {
2102 qeth_clear_cmd_buffers(&card->read);
2103 qeth_clear_cmd_buffers(&card->write);
2104 }
2105 card->use_hard_stop = 0;
2106 return rc;
2107 }
2108
2109 static void qeth_l3_set_multicast_list(struct net_device *dev)
2110 {
2111 struct qeth_card *card = dev->ml_priv;
2112
2113 QETH_DBF_TEXT(TRACE, 3, "setmulti");
2114 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2115 (card->state != CARD_STATE_UP))
2116 return;
2117 qeth_l3_delete_mc_addresses(card);
2118 qeth_l3_add_multicast_ipv4(card);
2119 #ifdef CONFIG_QETH_IPV6
2120 qeth_l3_add_multicast_ipv6(card);
2121 #endif
2122 qeth_l3_set_ip_addr_list(card);
2123 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2124 return;
2125 qeth_setadp_promisc_mode(card);
2126 }
2127
2128 static const char *qeth_l3_arp_get_error_cause(int *rc)
2129 {
2130 switch (*rc) {
2131 case QETH_IPA_ARP_RC_FAILED:
2132 *rc = -EIO;
2133 return "operation failed";
2134 case QETH_IPA_ARP_RC_NOTSUPP:
2135 *rc = -EOPNOTSUPP;
2136 return "operation not supported";
2137 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2138 *rc = -EINVAL;
2139 return "argument out of range";
2140 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2141 *rc = -EOPNOTSUPP;
2142 return "query operation not supported";
2143 case QETH_IPA_ARP_RC_Q_NO_DATA:
2144 *rc = -ENOENT;
2145 return "no query data available";
2146 default:
2147 return "unknown error";
2148 }
2149 }
2150
2151 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2152 {
2153 int tmp;
2154 int rc;
2155
2156 QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2157
2158 /*
2159 * currently GuestLAN only supports the ARP assist function
2160 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2161 * thus we say EOPNOTSUPP for this ARP function
2162 */
2163 if (card->info.guestlan)
2164 return -EOPNOTSUPP;
2165 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2166 return -EOPNOTSUPP;
2167 }
2168 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2169 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2170 no_entries);
2171 if (rc) {
2172 tmp = rc;
2173 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2174 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2175 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2176 }
2177 return rc;
2178 }
2179
2180 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2181 struct qeth_arp_query_data *qdata, int entry_size,
2182 int uentry_size)
2183 {
2184 char *entry_ptr;
2185 char *uentry_ptr;
2186 int i;
2187
2188 entry_ptr = (char *)&qdata->data;
2189 uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2190 for (i = 0; i < qdata->no_entries; ++i) {
2191 /* strip off 32 bytes "media specific information" */
2192 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2193 entry_ptr += entry_size;
2194 uentry_ptr += uentry_size;
2195 }
2196 }
2197
2198 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2199 struct qeth_reply *reply, unsigned long data)
2200 {
2201 struct qeth_ipa_cmd *cmd;
2202 struct qeth_arp_query_data *qdata;
2203 struct qeth_arp_query_info *qinfo;
2204 int entry_size;
2205 int uentry_size;
2206 int i;
2207
2208 QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2209
2210 qinfo = (struct qeth_arp_query_info *) reply->param;
2211 cmd = (struct qeth_ipa_cmd *) data;
2212 if (cmd->hdr.return_code) {
2213 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2214 return 0;
2215 }
2216 if (cmd->data.setassparms.hdr.return_code) {
2217 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2218 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2219 return 0;
2220 }
2221 qdata = &cmd->data.setassparms.data.query_arp;
2222 switch (qdata->reply_bits) {
2223 case 5:
2224 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2225 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2226 uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2227 break;
2228 case 7:
2229 /* fall through to default */
2230 default:
2231 /* tr is the same as eth -> entry7 */
2232 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2233 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2234 uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2235 break;
2236 }
2237 /* check if there is enough room in userspace */
2238 if ((qinfo->udata_len - qinfo->udata_offset) <
2239 qdata->no_entries * uentry_size){
2240 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2241 cmd->hdr.return_code = -ENOMEM;
2242 goto out_error;
2243 }
2244 QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2245 cmd->data.setassparms.hdr.number_of_replies);
2246 QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2247 QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2248
2249 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2250 /* strip off "media specific information" */
2251 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2252 uentry_size);
2253 } else
2254 /*copy entries to user buffer*/
2255 memcpy(qinfo->udata + qinfo->udata_offset,
2256 (char *)&qdata->data, qdata->no_entries*uentry_size);
2257
2258 qinfo->no_entries += qdata->no_entries;
2259 qinfo->udata_offset += (qdata->no_entries*uentry_size);
2260 /* check if all replies received ... */
2261 if (cmd->data.setassparms.hdr.seq_no <
2262 cmd->data.setassparms.hdr.number_of_replies)
2263 return 1;
2264 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2265 /* keep STRIP_ENTRIES flag so the user program can distinguish
2266 * stripped entries from normal ones */
2267 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2268 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2269 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2270 return 0;
2271 out_error:
2272 i = 0;
2273 memcpy(qinfo->udata, &i, 4);
2274 return 0;
2275 }
2276
2277 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2278 struct qeth_cmd_buffer *iob, int len,
2279 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2280 unsigned long),
2281 void *reply_param)
2282 {
2283 QETH_DBF_TEXT(TRACE, 4, "sendarp");
2284
2285 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2286 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2287 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2288 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2289 reply_cb, reply_param);
2290 }
2291
2292 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2293 {
2294 struct qeth_cmd_buffer *iob;
2295 struct qeth_arp_query_info qinfo = {0, };
2296 int tmp;
2297 int rc;
2298
2299 QETH_DBF_TEXT(TRACE, 3, "arpquery");
2300
2301 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2302 IPA_ARP_PROCESSING)) {
2303 return -EOPNOTSUPP;
2304 }
2305 /* get size of userspace buffer and mask_bits -> 6 bytes */
2306 if (copy_from_user(&qinfo, udata, 6))
2307 return -EFAULT;
2308 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2309 if (!qinfo.udata)
2310 return -ENOMEM;
2311 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2312 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2313 IPA_CMD_ASS_ARP_QUERY_INFO,
2314 sizeof(int), QETH_PROT_IPV4);
2315
2316 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2317 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2318 qeth_l3_arp_query_cb, (void *)&qinfo);
2319 if (rc) {
2320 tmp = rc;
2321 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2322 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2323 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2324 if (copy_to_user(udata, qinfo.udata, 4))
2325 rc = -EFAULT;
2326 } else {
2327 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2328 rc = -EFAULT;
2329 }
2330 kfree(qinfo.udata);
2331 return rc;
2332 }
2333
2334 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2335 struct qeth_arp_cache_entry *entry)
2336 {
2337 struct qeth_cmd_buffer *iob;
2338 char buf[16];
2339 int tmp;
2340 int rc;
2341
2342 QETH_DBF_TEXT(TRACE, 3, "arpadent");
2343
2344 /*
2345 * currently GuestLAN only supports the ARP assist function
2346 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2347 * thus we say EOPNOTSUPP for this ARP function
2348 */
2349 if (card->info.guestlan)
2350 return -EOPNOTSUPP;
2351 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2352 return -EOPNOTSUPP;
2353 }
2354
2355 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2356 IPA_CMD_ASS_ARP_ADD_ENTRY,
2357 sizeof(struct qeth_arp_cache_entry),
2358 QETH_PROT_IPV4);
2359 rc = qeth_l3_send_setassparms(card, iob,
2360 sizeof(struct qeth_arp_cache_entry),
2361 (unsigned long) entry,
2362 qeth_l3_default_setassparms_cb, NULL);
2363 if (rc) {
2364 tmp = rc;
2365 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2366 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2367 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2368 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2369 }
2370 return rc;
2371 }
2372
2373 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2374 struct qeth_arp_cache_entry *entry)
2375 {
2376 struct qeth_cmd_buffer *iob;
2377 char buf[16] = {0, };
2378 int tmp;
2379 int rc;
2380
2381 QETH_DBF_TEXT(TRACE, 3, "arprment");
2382
2383 /*
2384 * currently GuestLAN only supports the ARP assist function
2385 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2386 * thus we say EOPNOTSUPP for this ARP function
2387 */
2388 if (card->info.guestlan)
2389 return -EOPNOTSUPP;
2390 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2391 return -EOPNOTSUPP;
2392 }
2393 memcpy(buf, entry, 12);
2394 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2395 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2396 12,
2397 QETH_PROT_IPV4);
2398 rc = qeth_l3_send_setassparms(card, iob,
2399 12, (unsigned long)buf,
2400 qeth_l3_default_setassparms_cb, NULL);
2401 if (rc) {
2402 tmp = rc;
2403 memset(buf, 0, 16);
2404 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2405 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2406 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2407 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2408 }
2409 return rc;
2410 }
2411
2412 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2413 {
2414 int rc;
2415 int tmp;
2416
2417 QETH_DBF_TEXT(TRACE, 3, "arpflush");
2418
2419 /*
2420 * currently GuestLAN only supports the ARP assist function
2421 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2422 * thus we say EOPNOTSUPP for this ARP function
2423 */
2424 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2425 return -EOPNOTSUPP;
2426 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2427 return -EOPNOTSUPP;
2428 }
2429 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2430 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2431 if (rc) {
2432 tmp = rc;
2433 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2434 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2435 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2436 }
2437 return rc;
2438 }
2439
2440 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2441 {
2442 struct qeth_card *card = dev->ml_priv;
2443 struct qeth_arp_cache_entry arp_entry;
2444 struct mii_ioctl_data *mii_data;
2445 int rc = 0;
2446
2447 if (!card)
2448 return -ENODEV;
2449
2450 if ((card->state != CARD_STATE_UP) &&
2451 (card->state != CARD_STATE_SOFTSETUP))
2452 return -ENODEV;
2453
2454 switch (cmd) {
2455 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2456 if (!capable(CAP_NET_ADMIN)) {
2457 rc = -EPERM;
2458 break;
2459 }
2460 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2461 break;
2462 case SIOC_QETH_ARP_QUERY_INFO:
2463 if (!capable(CAP_NET_ADMIN)) {
2464 rc = -EPERM;
2465 break;
2466 }
2467 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2468 break;
2469 case SIOC_QETH_ARP_ADD_ENTRY:
2470 if (!capable(CAP_NET_ADMIN)) {
2471 rc = -EPERM;
2472 break;
2473 }
2474 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2475 sizeof(struct qeth_arp_cache_entry)))
2476 rc = -EFAULT;
2477 else
2478 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2479 break;
2480 case SIOC_QETH_ARP_REMOVE_ENTRY:
2481 if (!capable(CAP_NET_ADMIN)) {
2482 rc = -EPERM;
2483 break;
2484 }
2485 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2486 sizeof(struct qeth_arp_cache_entry)))
2487 rc = -EFAULT;
2488 else
2489 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2490 break;
2491 case SIOC_QETH_ARP_FLUSH_CACHE:
2492 if (!capable(CAP_NET_ADMIN)) {
2493 rc = -EPERM;
2494 break;
2495 }
2496 rc = qeth_l3_arp_flush_cache(card);
2497 break;
2498 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2499 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2500 break;
2501 case SIOC_QETH_GET_CARD_TYPE:
2502 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2503 !card->info.guestlan)
2504 return 1;
2505 return 0;
2506 break;
2507 case SIOCGMIIPHY:
2508 mii_data = if_mii(rq);
2509 mii_data->phy_id = 0;
2510 break;
2511 case SIOCGMIIREG:
2512 mii_data = if_mii(rq);
2513 if (mii_data->phy_id != 0)
2514 rc = -EINVAL;
2515 else
2516 mii_data->val_out = qeth_mdio_read(dev,
2517 mii_data->phy_id,
2518 mii_data->reg_num);
2519 break;
2520 default:
2521 rc = -EOPNOTSUPP;
2522 }
2523 if (rc)
2524 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2525 return rc;
2526 }
2527
2528 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2529 {
2530 int cast_type = RTN_UNSPEC;
2531
2532 if (skb_dst(skb) && skb_dst(skb)->neighbour) {
2533 cast_type = skb_dst(skb)->neighbour->type;
2534 if ((cast_type == RTN_BROADCAST) ||
2535 (cast_type == RTN_MULTICAST) ||
2536 (cast_type == RTN_ANYCAST))
2537 return cast_type;
2538 else
2539 return RTN_UNSPEC;
2540 }
2541 /* try something else */
2542 if (skb->protocol == ETH_P_IPV6)
2543 return (skb_network_header(skb)[24] == 0xff) ?
2544 RTN_MULTICAST : 0;
2545 else if (skb->protocol == ETH_P_IP)
2546 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2547 RTN_MULTICAST : 0;
2548 /* ... */
2549 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2550 return RTN_BROADCAST;
2551 else {
2552 u16 hdr_mac;
2553
2554 hdr_mac = *((u16 *)skb->data);
2555 /* tr multicast? */
2556 switch (card->info.link_type) {
2557 case QETH_LINK_TYPE_HSTR:
2558 case QETH_LINK_TYPE_LANE_TR:
2559 if ((hdr_mac == QETH_TR_MAC_NC) ||
2560 (hdr_mac == QETH_TR_MAC_C))
2561 return RTN_MULTICAST;
2562 break;
2563 /* eth or so multicast? */
2564 default:
2565 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2566 (hdr_mac == QETH_ETH_MAC_V6))
2567 return RTN_MULTICAST;
2568 }
2569 }
2570 return cast_type;
2571 }
2572
2573 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2574 struct sk_buff *skb, int ipv, int cast_type)
2575 {
2576 memset(hdr, 0, sizeof(struct qeth_hdr));
2577 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2578 hdr->hdr.l3.ext_flags = 0;
2579
2580 /*
2581 * before we're going to overwrite this location with next hop ip.
2582 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2583 */
2584 if (card->vlangrp && vlan_tx_tag_present(skb)) {
2585 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2586 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2587 else
2588 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2589 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2590 }
2591
2592 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2593 if (ipv == 4) {
2594 /* IPv4 */
2595 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2596 memset(hdr->hdr.l3.dest_addr, 0, 12);
2597 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2598 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2599 *((u32 *) skb_dst(skb)->neighbour->primary_key);
2600 } else {
2601 /* fill in destination address used in ip header */
2602 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2603 ip_hdr(skb)->daddr;
2604 }
2605 } else if (ipv == 6) {
2606 /* IPv6 */
2607 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2608 if (card->info.type == QETH_CARD_TYPE_IQD)
2609 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2610 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2611 memcpy(hdr->hdr.l3.dest_addr,
2612 skb_dst(skb)->neighbour->primary_key, 16);
2613 } else {
2614 /* fill in destination address used in ip header */
2615 memcpy(hdr->hdr.l3.dest_addr,
2616 &ipv6_hdr(skb)->daddr, 16);
2617 }
2618 } else {
2619 /* passthrough */
2620 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2621 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2622 sizeof(__u16), skb->dev->broadcast, 6)) {
2623 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2624 QETH_HDR_PASSTHRU;
2625 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2626 skb->dev->broadcast, 6)) {
2627 /* broadcast? */
2628 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2629 QETH_HDR_PASSTHRU;
2630 } else {
2631 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2632 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2633 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2634 }
2635 }
2636 }
2637
2638 static void qeth_tso_fill_header(struct qeth_card *card,
2639 struct qeth_hdr *qhdr, struct sk_buff *skb)
2640 {
2641 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2642 struct tcphdr *tcph = tcp_hdr(skb);
2643 struct iphdr *iph = ip_hdr(skb);
2644 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2645
2646 /*fix header to TSO values ...*/
2647 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2648 /*set values which are fix for the first approach ...*/
2649 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2650 hdr->ext.imb_hdr_no = 1;
2651 hdr->ext.hdr_type = 1;
2652 hdr->ext.hdr_version = 1;
2653 hdr->ext.hdr_len = 28;
2654 /*insert non-fix values */
2655 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2656 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2657 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2658 sizeof(struct qeth_hdr_tso));
2659 tcph->check = 0;
2660 if (skb->protocol == ETH_P_IPV6) {
2661 ip6h->payload_len = 0;
2662 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2663 0, IPPROTO_TCP, 0);
2664 } else {
2665 /*OSA want us to set these values ...*/
2666 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2667 0, IPPROTO_TCP, 0);
2668 iph->tot_len = 0;
2669 iph->check = 0;
2670 }
2671 }
2672
2673 static void qeth_tx_csum(struct sk_buff *skb)
2674 {
2675 __wsum csum;
2676 int offset;
2677
2678 skb_set_transport_header(skb, skb->csum_start - skb_headroom(skb));
2679 offset = skb->csum_start - skb_headroom(skb);
2680 BUG_ON(offset >= skb_headlen(skb));
2681 csum = skb_checksum(skb, offset, skb->len - offset, 0);
2682
2683 offset += skb->csum_offset;
2684 BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
2685 *(__sum16 *)(skb->data + offset) = csum_fold(csum);
2686 }
2687
2688 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2689 {
2690 int rc;
2691 u16 *tag;
2692 struct qeth_hdr *hdr = NULL;
2693 int elements_needed = 0;
2694 int elems;
2695 struct qeth_card *card = dev->ml_priv;
2696 struct sk_buff *new_skb = NULL;
2697 int ipv = qeth_get_ip_version(skb);
2698 int cast_type = qeth_l3_get_cast_type(card, skb);
2699 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2700 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2701 int tx_bytes = skb->len;
2702 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2703 int data_offset = -1;
2704 int nr_frags;
2705
2706 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2707 (skb->protocol != htons(ETH_P_IPV6)) &&
2708 (skb->protocol != htons(ETH_P_IP)))
2709 goto tx_drop;
2710
2711 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2712 card->stats.tx_carrier_errors++;
2713 goto tx_drop;
2714 }
2715
2716 if ((cast_type == RTN_BROADCAST) &&
2717 (card->info.broadcast_capable == 0))
2718 goto tx_drop;
2719
2720 if (card->options.performance_stats) {
2721 card->perf_stats.outbound_cnt++;
2722 card->perf_stats.outbound_start_time = qeth_get_micros();
2723 }
2724
2725 if (skb_is_gso(skb))
2726 large_send = card->options.large_send;
2727 else
2728 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2729 qeth_tx_csum(skb);
2730 if (card->options.performance_stats)
2731 card->perf_stats.tx_csum++;
2732 }
2733
2734 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2735 (skb_shinfo(skb)->nr_frags == 0)) {
2736 new_skb = skb;
2737 data_offset = ETH_HLEN;
2738 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2739 if (!hdr)
2740 goto tx_drop;
2741 elements_needed++;
2742 } else {
2743 /* create a clone with writeable headroom */
2744 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2745 + VLAN_HLEN);
2746 if (!new_skb)
2747 goto tx_drop;
2748 }
2749
2750 if (card->info.type == QETH_CARD_TYPE_IQD) {
2751 if (data_offset < 0)
2752 skb_pull(new_skb, ETH_HLEN);
2753 } else {
2754 if (new_skb->protocol == htons(ETH_P_IP)) {
2755 if (card->dev->type == ARPHRD_IEEE802_TR)
2756 skb_pull(new_skb, TR_HLEN);
2757 else
2758 skb_pull(new_skb, ETH_HLEN);
2759 }
2760
2761 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2762 vlan_tx_tag_present(new_skb)) {
2763 skb_push(new_skb, VLAN_HLEN);
2764 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2765 skb_copy_to_linear_data_offset(new_skb, 4,
2766 new_skb->data + 8, 4);
2767 skb_copy_to_linear_data_offset(new_skb, 8,
2768 new_skb->data + 12, 4);
2769 tag = (u16 *)(new_skb->data + 12);
2770 *tag = __constant_htons(ETH_P_8021Q);
2771 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2772 new_skb->vlan_tci = 0;
2773 }
2774 }
2775
2776 netif_stop_queue(dev);
2777
2778 /* fix hardware limitation: as long as we do not have sbal
2779 * chaining we can not send long frag lists
2780 */
2781 if ((large_send == QETH_LARGE_SEND_TSO) &&
2782 ((skb_shinfo(new_skb)->nr_frags + 2) > 16)) {
2783 if (skb_linearize(new_skb))
2784 goto tx_drop;
2785 }
2786
2787 if ((large_send == QETH_LARGE_SEND_TSO) &&
2788 (cast_type == RTN_UNSPEC)) {
2789 hdr = (struct qeth_hdr *)skb_push(new_skb,
2790 sizeof(struct qeth_hdr_tso));
2791 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2792 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2793 qeth_tso_fill_header(card, hdr, new_skb);
2794 elements_needed++;
2795 } else {
2796 if (data_offset < 0) {
2797 hdr = (struct qeth_hdr *)skb_push(new_skb,
2798 sizeof(struct qeth_hdr));
2799 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2800 cast_type);
2801 } else {
2802 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2803 cast_type);
2804 hdr->hdr.l3.length = new_skb->len - data_offset;
2805 }
2806 }
2807
2808 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2809 elements_needed);
2810 if (!elems) {
2811 if (data_offset >= 0)
2812 kmem_cache_free(qeth_core_header_cache, hdr);
2813 goto tx_drop;
2814 }
2815 elements_needed += elems;
2816 nr_frags = skb_shinfo(new_skb)->nr_frags;
2817
2818 if (card->info.type != QETH_CARD_TYPE_IQD)
2819 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2820 elements_needed);
2821 else
2822 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2823 elements_needed, data_offset, 0);
2824
2825 if (!rc) {
2826 card->stats.tx_packets++;
2827 card->stats.tx_bytes += tx_bytes;
2828 if (new_skb != skb)
2829 dev_kfree_skb_any(skb);
2830 if (card->options.performance_stats) {
2831 if (large_send != QETH_LARGE_SEND_NO) {
2832 card->perf_stats.large_send_bytes += tx_bytes;
2833 card->perf_stats.large_send_cnt++;
2834 }
2835 if (nr_frags) {
2836 card->perf_stats.sg_skbs_sent++;
2837 /* nr_frags + skb->data */
2838 card->perf_stats.sg_frags_sent += nr_frags + 1;
2839 }
2840 }
2841 rc = NETDEV_TX_OK;
2842 } else {
2843 if (data_offset >= 0)
2844 kmem_cache_free(qeth_core_header_cache, hdr);
2845
2846 if (rc == -EBUSY) {
2847 if (new_skb != skb)
2848 dev_kfree_skb_any(new_skb);
2849 return NETDEV_TX_BUSY;
2850 } else
2851 goto tx_drop;
2852 }
2853
2854 netif_wake_queue(dev);
2855 if (card->options.performance_stats)
2856 card->perf_stats.outbound_time += qeth_get_micros() -
2857 card->perf_stats.outbound_start_time;
2858 return rc;
2859
2860 tx_drop:
2861 card->stats.tx_dropped++;
2862 card->stats.tx_errors++;
2863 if ((new_skb != skb) && new_skb)
2864 dev_kfree_skb_any(new_skb);
2865 dev_kfree_skb_any(skb);
2866 netif_wake_queue(dev);
2867 return NETDEV_TX_OK;
2868 }
2869
2870 static int qeth_l3_open(struct net_device *dev)
2871 {
2872 struct qeth_card *card = dev->ml_priv;
2873
2874 QETH_DBF_TEXT(TRACE, 4, "qethopen");
2875 if (card->state != CARD_STATE_SOFTSETUP)
2876 return -ENODEV;
2877 card->data.state = CH_STATE_UP;
2878 card->state = CARD_STATE_UP;
2879 netif_start_queue(dev);
2880
2881 if (!card->lan_online && netif_carrier_ok(dev))
2882 netif_carrier_off(dev);
2883 return 0;
2884 }
2885
2886 static int qeth_l3_stop(struct net_device *dev)
2887 {
2888 struct qeth_card *card = dev->ml_priv;
2889
2890 QETH_DBF_TEXT(TRACE, 4, "qethstop");
2891 netif_tx_disable(dev);
2892 if (card->state == CARD_STATE_UP)
2893 card->state = CARD_STATE_SOFTSETUP;
2894 return 0;
2895 }
2896
2897 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2898 {
2899 struct qeth_card *card = dev->ml_priv;
2900
2901 return (card->options.checksum_type == HW_CHECKSUMMING);
2902 }
2903
2904 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2905 {
2906 struct qeth_card *card = dev->ml_priv;
2907 enum qeth_card_states old_state;
2908 enum qeth_checksum_types csum_type;
2909
2910 if ((card->state != CARD_STATE_UP) &&
2911 (card->state != CARD_STATE_DOWN))
2912 return -EPERM;
2913
2914 if (data)
2915 csum_type = HW_CHECKSUMMING;
2916 else
2917 csum_type = SW_CHECKSUMMING;
2918
2919 if (card->options.checksum_type != csum_type) {
2920 old_state = card->state;
2921 if (card->state == CARD_STATE_UP)
2922 __qeth_l3_set_offline(card->gdev, 1);
2923 card->options.checksum_type = csum_type;
2924 if (old_state == CARD_STATE_UP)
2925 __qeth_l3_set_online(card->gdev, 1);
2926 }
2927 return 0;
2928 }
2929
2930 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2931 {
2932 struct qeth_card *card = dev->ml_priv;
2933
2934 if (data) {
2935 if (card->options.large_send == QETH_LARGE_SEND_NO) {
2936 if (card->info.type == QETH_CARD_TYPE_IQD)
2937 return -EPERM;
2938 else
2939 card->options.large_send = QETH_LARGE_SEND_TSO;
2940 dev->features |= NETIF_F_TSO;
2941 }
2942 } else {
2943 dev->features &= ~NETIF_F_TSO;
2944 card->options.large_send = QETH_LARGE_SEND_NO;
2945 }
2946 return 0;
2947 }
2948
2949 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2950 .get_link = ethtool_op_get_link,
2951 .get_tx_csum = ethtool_op_get_tx_csum,
2952 .set_tx_csum = ethtool_op_set_tx_hw_csum,
2953 .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
2954 .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
2955 .get_sg = ethtool_op_get_sg,
2956 .set_sg = ethtool_op_set_sg,
2957 .get_tso = ethtool_op_get_tso,
2958 .set_tso = qeth_l3_ethtool_set_tso,
2959 .get_strings = qeth_core_get_strings,
2960 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2961 .get_stats_count = qeth_core_get_stats_count,
2962 .get_drvinfo = qeth_core_get_drvinfo,
2963 .get_settings = qeth_core_ethtool_get_settings,
2964 };
2965
2966 /*
2967 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2968 * NOARP on the netdevice is no option because it also turns off neighbor
2969 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2970 * arp resolution but we want the hard header (packet socket will work
2971 * e.g. tcpdump)
2972 */
2973 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2974 {
2975 n->nud_state = NUD_NOARP;
2976 memcpy(n->ha, "FAKELL", 6);
2977 n->output = n->ops->connected_output;
2978 return 0;
2979 }
2980
2981 static int
2982 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2983 {
2984 if (np->tbl->family == AF_INET)
2985 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2986
2987 return 0;
2988 }
2989
2990 static const struct net_device_ops qeth_l3_netdev_ops = {
2991 .ndo_open = qeth_l3_open,
2992 .ndo_stop = qeth_l3_stop,
2993 .ndo_get_stats = qeth_get_stats,
2994 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2995 .ndo_validate_addr = eth_validate_addr,
2996 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
2997 .ndo_do_ioctl = qeth_l3_do_ioctl,
2998 .ndo_change_mtu = qeth_change_mtu,
2999 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3000 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3001 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3002 .ndo_tx_timeout = qeth_tx_timeout,
3003 };
3004
3005 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3006 .ndo_open = qeth_l3_open,
3007 .ndo_stop = qeth_l3_stop,
3008 .ndo_get_stats = qeth_get_stats,
3009 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3010 .ndo_validate_addr = eth_validate_addr,
3011 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3012 .ndo_do_ioctl = qeth_l3_do_ioctl,
3013 .ndo_change_mtu = qeth_change_mtu,
3014 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3015 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3016 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3017 .ndo_tx_timeout = qeth_tx_timeout,
3018 .ndo_neigh_setup = qeth_l3_neigh_setup,
3019 };
3020
3021 static int qeth_l3_setup_netdev(struct qeth_card *card)
3022 {
3023 if (card->info.type == QETH_CARD_TYPE_OSAE) {
3024 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3025 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3026 #ifdef CONFIG_TR
3027 card->dev = alloc_trdev(0);
3028 #endif
3029 if (!card->dev)
3030 return -ENODEV;
3031 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3032 } else {
3033 card->dev = alloc_etherdev(0);
3034 if (!card->dev)
3035 return -ENODEV;
3036 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3037
3038 /*IPv6 address autoconfiguration stuff*/
3039 qeth_l3_get_unique_id(card);
3040 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3041 card->dev->dev_id = card->info.unique_id &
3042 0xffff;
3043 }
3044 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3045 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3046 if (!card->dev)
3047 return -ENODEV;
3048 card->dev->flags |= IFF_NOARP;
3049 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3050 qeth_l3_iqd_read_initial_mac(card);
3051 } else
3052 return -ENODEV;
3053
3054 card->dev->ml_priv = card;
3055 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3056 card->dev->mtu = card->info.initial_mtu;
3057 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3058 card->dev->features |= NETIF_F_HW_VLAN_TX |
3059 NETIF_F_HW_VLAN_RX |
3060 NETIF_F_HW_VLAN_FILTER;
3061 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3062
3063 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3064 return register_netdev(card->dev);
3065 }
3066
3067 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
3068 unsigned int qdio_err, unsigned int queue, int first_element,
3069 int count, unsigned long card_ptr)
3070 {
3071 struct net_device *net_dev;
3072 struct qeth_card *card;
3073 struct qeth_qdio_buffer *buffer;
3074 int index;
3075 int i;
3076
3077 card = (struct qeth_card *) card_ptr;
3078 net_dev = card->dev;
3079 if (card->options.performance_stats) {
3080 card->perf_stats.inbound_cnt++;
3081 card->perf_stats.inbound_start_time = qeth_get_micros();
3082 }
3083 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3084 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
3085 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
3086 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
3087 first_element, count);
3088 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
3089 qeth_schedule_recovery(card);
3090 return;
3091 }
3092 for (i = first_element; i < (first_element + count); ++i) {
3093 index = i % QDIO_MAX_BUFFERS_PER_Q;
3094 buffer = &card->qdio.in_q->bufs[index];
3095 if (!(qdio_err &&
3096 qeth_check_qdio_errors(buffer->buffer,
3097 qdio_err, "qinerr")))
3098 qeth_l3_process_inbound_buffer(card, buffer, index);
3099 /* clear buffer and give back to hardware */
3100 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3101 qeth_queue_input_buffer(card, index);
3102 }
3103 if (card->options.performance_stats)
3104 card->perf_stats.inbound_time += qeth_get_micros() -
3105 card->perf_stats.inbound_start_time;
3106 }
3107
3108 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3109 {
3110 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3111
3112 qeth_l3_create_device_attributes(&gdev->dev);
3113 card->options.layer2 = 0;
3114 card->discipline.input_handler = (qdio_handler_t *)
3115 qeth_l3_qdio_input_handler;
3116 card->discipline.output_handler = (qdio_handler_t *)
3117 qeth_qdio_output_handler;
3118 card->discipline.recover = qeth_l3_recover;
3119 return 0;
3120 }
3121
3122 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3123 {
3124 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3125
3126 qeth_set_allowed_threads(card, 0, 1);
3127 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3128
3129 if (cgdev->state == CCWGROUP_ONLINE) {
3130 card->use_hard_stop = 1;
3131 qeth_l3_set_offline(cgdev);
3132 }
3133
3134 if (card->dev) {
3135 unregister_netdev(card->dev);
3136 card->dev = NULL;
3137 }
3138
3139 qeth_l3_remove_device_attributes(&cgdev->dev);
3140 qeth_l3_clear_ip_list(card, 0, 0);
3141 qeth_l3_clear_ipato_list(card);
3142 return;
3143 }
3144
3145 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3146 {
3147 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3148 int rc = 0;
3149 enum qeth_card_states recover_flag;
3150
3151 BUG_ON(!card);
3152 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3153 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3154
3155 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3156
3157 recover_flag = card->state;
3158 rc = ccw_device_set_online(CARD_RDEV(card));
3159 if (rc) {
3160 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3161 return -EIO;
3162 }
3163 rc = ccw_device_set_online(CARD_WDEV(card));
3164 if (rc) {
3165 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3166 return -EIO;
3167 }
3168 rc = ccw_device_set_online(CARD_DDEV(card));
3169 if (rc) {
3170 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3171 return -EIO;
3172 }
3173
3174 rc = qeth_core_hardsetup_card(card);
3175 if (rc) {
3176 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3177 goto out_remove;
3178 }
3179
3180 qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3181
3182 if (!card->dev && qeth_l3_setup_netdev(card))
3183 goto out_remove;
3184
3185 card->state = CARD_STATE_HARDSETUP;
3186 qeth_print_status_message(card);
3187
3188 /* softsetup */
3189 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3190
3191 rc = qeth_send_startlan(card);
3192 if (rc) {
3193 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3194 if (rc == 0xe080) {
3195 dev_warn(&card->gdev->dev,
3196 "The LAN is offline\n");
3197 card->lan_online = 0;
3198 return 0;
3199 }
3200 goto out_remove;
3201 } else
3202 card->lan_online = 1;
3203 qeth_set_large_send(card, card->options.large_send);
3204
3205 rc = qeth_l3_setadapter_parms(card);
3206 if (rc)
3207 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3208 rc = qeth_l3_start_ipassists(card);
3209 if (rc)
3210 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3211 rc = qeth_l3_setrouting_v4(card);
3212 if (rc)
3213 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3214 rc = qeth_l3_setrouting_v6(card);
3215 if (rc)
3216 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3217 netif_tx_disable(card->dev);
3218
3219 rc = qeth_init_qdio_queues(card);
3220 if (rc) {
3221 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3222 goto out_remove;
3223 }
3224 card->state = CARD_STATE_SOFTSETUP;
3225 netif_carrier_on(card->dev);
3226
3227 qeth_set_allowed_threads(card, 0xffffffff, 0);
3228 qeth_l3_set_ip_addr_list(card);
3229 if (recover_flag == CARD_STATE_RECOVER) {
3230 if (recovery_mode)
3231 qeth_l3_open(card->dev);
3232 else {
3233 rtnl_lock();
3234 dev_open(card->dev);
3235 rtnl_unlock();
3236 }
3237 qeth_l3_set_multicast_list(card->dev);
3238 }
3239 /* let user_space know that device is online */
3240 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3241 return 0;
3242 out_remove:
3243 card->use_hard_stop = 1;
3244 qeth_l3_stop_card(card, 0);
3245 ccw_device_set_offline(CARD_DDEV(card));
3246 ccw_device_set_offline(CARD_WDEV(card));
3247 ccw_device_set_offline(CARD_RDEV(card));
3248 if (recover_flag == CARD_STATE_RECOVER)
3249 card->state = CARD_STATE_RECOVER;
3250 else
3251 card->state = CARD_STATE_DOWN;
3252 return -ENODEV;
3253 }
3254
3255 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3256 {
3257 return __qeth_l3_set_online(gdev, 0);
3258 }
3259
3260 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3261 int recovery_mode)
3262 {
3263 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3264 int rc = 0, rc2 = 0, rc3 = 0;
3265 enum qeth_card_states recover_flag;
3266
3267 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3268 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3269
3270 if (card->dev && netif_carrier_ok(card->dev))
3271 netif_carrier_off(card->dev);
3272 recover_flag = card->state;
3273 qeth_l3_stop_card(card, recovery_mode);
3274 rc = ccw_device_set_offline(CARD_DDEV(card));
3275 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3276 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3277 if (!rc)
3278 rc = (rc2) ? rc2 : rc3;
3279 if (rc)
3280 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3281 if (recover_flag == CARD_STATE_UP)
3282 card->state = CARD_STATE_RECOVER;
3283 /* let user_space know that device is offline */
3284 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3285 return 0;
3286 }
3287
3288 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3289 {
3290 return __qeth_l3_set_offline(cgdev, 0);
3291 }
3292
3293 static int qeth_l3_recover(void *ptr)
3294 {
3295 struct qeth_card *card;
3296 int rc = 0;
3297
3298 card = (struct qeth_card *) ptr;
3299 QETH_DBF_TEXT(TRACE, 2, "recover1");
3300 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3301 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3302 return 0;
3303 QETH_DBF_TEXT(TRACE, 2, "recover2");
3304 dev_warn(&card->gdev->dev,
3305 "A recovery process has been started for the device\n");
3306 card->use_hard_stop = 1;
3307 __qeth_l3_set_offline(card->gdev, 1);
3308 rc = __qeth_l3_set_online(card->gdev, 1);
3309 /* don't run another scheduled recovery */
3310 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3311 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3312 if (!rc)
3313 dev_info(&card->gdev->dev,
3314 "Device successfully recovered!\n");
3315 else {
3316 rtnl_lock();
3317 dev_close(card->dev);
3318 rtnl_unlock();
3319 dev_warn(&card->gdev->dev, "The qeth device driver "
3320 "failed to recover an error on the device\n");
3321 }
3322 return 0;
3323 }
3324
3325 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3326 {
3327 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3328 qeth_l3_clear_ip_list(card, 0, 0);
3329 qeth_qdio_clear_card(card, 0);
3330 qeth_clear_qdio_buffers(card);
3331 }
3332
3333 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3334 {
3335 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3336
3337 if (card->dev)
3338 netif_device_detach(card->dev);
3339 qeth_set_allowed_threads(card, 0, 1);
3340 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3341 if (gdev->state == CCWGROUP_OFFLINE)
3342 return 0;
3343 if (card->state == CARD_STATE_UP) {
3344 card->use_hard_stop = 1;
3345 __qeth_l3_set_offline(card->gdev, 1);
3346 } else
3347 __qeth_l3_set_offline(card->gdev, 0);
3348 return 0;
3349 }
3350
3351 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3352 {
3353 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3354 int rc = 0;
3355
3356 if (gdev->state == CCWGROUP_OFFLINE)
3357 goto out;
3358
3359 if (card->state == CARD_STATE_RECOVER) {
3360 rc = __qeth_l3_set_online(card->gdev, 1);
3361 if (rc) {
3362 if (card->dev) {
3363 rtnl_lock();
3364 dev_close(card->dev);
3365 rtnl_unlock();
3366 }
3367 }
3368 } else
3369 rc = __qeth_l3_set_online(card->gdev, 0);
3370 out:
3371 qeth_set_allowed_threads(card, 0xffffffff, 0);
3372 if (card->dev)
3373 netif_device_attach(card->dev);
3374 if (rc)
3375 dev_warn(&card->gdev->dev, "The qeth device driver "
3376 "failed to recover an error on the device\n");
3377 return rc;
3378 }
3379
3380 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3381 .probe = qeth_l3_probe_device,
3382 .remove = qeth_l3_remove_device,
3383 .set_online = qeth_l3_set_online,
3384 .set_offline = qeth_l3_set_offline,
3385 .shutdown = qeth_l3_shutdown,
3386 .freeze = qeth_l3_pm_suspend,
3387 .thaw = qeth_l3_pm_resume,
3388 .restore = qeth_l3_pm_resume,
3389 };
3390 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3391
3392 static int qeth_l3_ip_event(struct notifier_block *this,
3393 unsigned long event, void *ptr)
3394 {
3395 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3396 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3397 struct qeth_ipaddr *addr;
3398 struct qeth_card *card;
3399
3400 if (dev_net(dev) != &init_net)
3401 return NOTIFY_DONE;
3402
3403 QETH_DBF_TEXT(TRACE, 3, "ipevent");
3404 card = qeth_l3_get_card_from_dev(dev);
3405 if (!card)
3406 return NOTIFY_DONE;
3407
3408 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3409 if (addr != NULL) {
3410 addr->u.a4.addr = ifa->ifa_address;
3411 addr->u.a4.mask = ifa->ifa_mask;
3412 addr->type = QETH_IP_TYPE_NORMAL;
3413 } else
3414 goto out;
3415
3416 switch (event) {
3417 case NETDEV_UP:
3418 if (!qeth_l3_add_ip(card, addr))
3419 kfree(addr);
3420 break;
3421 case NETDEV_DOWN:
3422 if (!qeth_l3_delete_ip(card, addr))
3423 kfree(addr);
3424 break;
3425 default:
3426 break;
3427 }
3428 qeth_l3_set_ip_addr_list(card);
3429 out:
3430 return NOTIFY_DONE;
3431 }
3432
3433 static struct notifier_block qeth_l3_ip_notifier = {
3434 qeth_l3_ip_event,
3435 NULL,
3436 };
3437
3438 #ifdef CONFIG_QETH_IPV6
3439 /**
3440 * IPv6 event handler
3441 */
3442 static int qeth_l3_ip6_event(struct notifier_block *this,
3443 unsigned long event, void *ptr)
3444 {
3445 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3446 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3447 struct qeth_ipaddr *addr;
3448 struct qeth_card *card;
3449
3450 QETH_DBF_TEXT(TRACE, 3, "ip6event");
3451
3452 card = qeth_l3_get_card_from_dev(dev);
3453 if (!card)
3454 return NOTIFY_DONE;
3455 if (!qeth_is_supported(card, IPA_IPV6))
3456 return NOTIFY_DONE;
3457
3458 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3459 if (addr != NULL) {
3460 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3461 addr->u.a6.pfxlen = ifa->prefix_len;
3462 addr->type = QETH_IP_TYPE_NORMAL;
3463 } else
3464 goto out;
3465
3466 switch (event) {
3467 case NETDEV_UP:
3468 if (!qeth_l3_add_ip(card, addr))
3469 kfree(addr);
3470 break;
3471 case NETDEV_DOWN:
3472 if (!qeth_l3_delete_ip(card, addr))
3473 kfree(addr);
3474 break;
3475 default:
3476 break;
3477 }
3478 qeth_l3_set_ip_addr_list(card);
3479 out:
3480 return NOTIFY_DONE;
3481 }
3482
3483 static struct notifier_block qeth_l3_ip6_notifier = {
3484 qeth_l3_ip6_event,
3485 NULL,
3486 };
3487 #endif
3488
3489 static int qeth_l3_register_notifiers(void)
3490 {
3491 int rc;
3492
3493 QETH_DBF_TEXT(TRACE, 5, "regnotif");
3494 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3495 if (rc)
3496 return rc;
3497 #ifdef CONFIG_QETH_IPV6
3498 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3499 if (rc) {
3500 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3501 return rc;
3502 }
3503 #else
3504 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3505 #endif
3506 return 0;
3507 }
3508
3509 static void qeth_l3_unregister_notifiers(void)
3510 {
3511
3512 QETH_DBF_TEXT(TRACE, 5, "unregnot");
3513 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3514 #ifdef CONFIG_QETH_IPV6
3515 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3516 #endif /* QETH_IPV6 */
3517 }
3518
3519 static int __init qeth_l3_init(void)
3520 {
3521 int rc = 0;
3522
3523 pr_info("register layer 3 discipline\n");
3524 rc = qeth_l3_register_notifiers();
3525 return rc;
3526 }
3527
3528 static void __exit qeth_l3_exit(void)
3529 {
3530 qeth_l3_unregister_notifiers();
3531 pr_info("unregister layer 3 discipline\n");
3532 }
3533
3534 module_init(qeth_l3_init);
3535 module_exit(qeth_l3_exit);
3536 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3537 MODULE_DESCRIPTION("qeth layer 3 discipline");
3538 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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