?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
gru: add hugepage support
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / s390 / net / qeth_l3_main.c
blobfd1b6ed3721f312800b2ec70c2ab6d6ebdcef38e
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 int qeth_l3_set_large_send(struct qeth_card *card,
45 enum qeth_large_send_types type)
46 {
47 int rc = 0;
48
49 card->options.large_send = type;
50 if (card->dev == NULL)
51 return 0;
52
53 if (card->options.large_send == QETH_LARGE_SEND_TSO) {
54 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
55 card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
56 NETIF_F_HW_CSUM;
57 } else {
58 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
59 NETIF_F_HW_CSUM);
60 card->options.large_send = QETH_LARGE_SEND_NO;
61 rc = -EOPNOTSUPP;
62 }
63 } else {
64 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
65 NETIF_F_HW_CSUM);
66 card->options.large_send = QETH_LARGE_SEND_NO;
67 }
68 return rc;
69 }
70
71 static int qeth_l3_isxdigit(char *buf)
72 {
73 while (*buf) {
74 if (!isxdigit(*buf++))
75 return 0;
76 }
77 return 1;
78 }
79
80 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
81 {
82 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
83 }
84
85 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
86 {
87 int count = 0, rc = 0;
88 int in[4];
89 char c;
90
91 rc = sscanf(buf, "%u.%u.%u.%u%c",
92 &in[0], &in[1], &in[2], &in[3], &c);
93 if (rc != 4 && (rc != 5 || c != '\n'))
94 return -EINVAL;
95 for (count = 0; count < 4; count++) {
96 if (in[count] > 255)
97 return -EINVAL;
98 addr[count] = in[count];
99 }
100 return 0;
101 }
102
103 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
104 {
105 sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
106 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
107 addr[0], addr[1], addr[2], addr[3],
108 addr[4], addr[5], addr[6], addr[7],
109 addr[8], addr[9], addr[10], addr[11],
110 addr[12], addr[13], addr[14], addr[15]);
111 }
112
113 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
114 {
115 const char *end, *end_tmp, *start;
116 __u16 *in;
117 char num[5];
118 int num2, cnt, out, found, save_cnt;
119 unsigned short in_tmp[8] = {0, };
120
121 cnt = out = found = save_cnt = num2 = 0;
122 end = start = buf;
123 in = (__u16 *) addr;
124 memset(in, 0, 16);
125 while (*end) {
126 end = strchr(start, ':');
127 if (end == NULL) {
128 end = buf + strlen(buf);
129 end_tmp = strchr(start, '\n');
130 if (end_tmp != NULL)
131 end = end_tmp;
132 out = 1;
133 }
134 if ((end - start)) {
135 memset(num, 0, 5);
136 if ((end - start) > 4)
137 return -EINVAL;
138 memcpy(num, start, end - start);
139 if (!qeth_l3_isxdigit(num))
140 return -EINVAL;
141 sscanf(start, "%x", &num2);
142 if (found)
143 in_tmp[save_cnt++] = num2;
144 else
145 in[cnt++] = num2;
146 if (out)
147 break;
148 } else {
149 if (found)
150 return -EINVAL;
151 found = 1;
152 }
153 start = ++end;
154 }
155 if (cnt + save_cnt > 8)
156 return -EINVAL;
157 cnt = 7;
158 while (save_cnt)
159 in[cnt--] = in_tmp[--save_cnt];
160 return 0;
161 }
162
163 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
164 char *buf)
165 {
166 if (proto == QETH_PROT_IPV4)
167 qeth_l3_ipaddr4_to_string(addr, buf);
168 else if (proto == QETH_PROT_IPV6)
169 qeth_l3_ipaddr6_to_string(addr, buf);
170 }
171
172 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
173 __u8 *addr)
174 {
175 if (proto == QETH_PROT_IPV4)
176 return qeth_l3_string_to_ipaddr4(buf, addr);
177 else if (proto == QETH_PROT_IPV6)
178 return qeth_l3_string_to_ipaddr6(buf, addr);
179 else
180 return -EINVAL;
181 }
182
183 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
184 {
185 int i, j;
186 u8 octet;
187
188 for (i = 0; i < len; ++i) {
189 octet = addr[i];
190 for (j = 7; j >= 0; --j) {
191 bits[i*8 + j] = octet & 1;
192 octet >>= 1;
193 }
194 }
195 }
196
197 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
198 struct qeth_ipaddr *addr)
199 {
200 struct qeth_ipato_entry *ipatoe;
201 u8 addr_bits[128] = {0, };
202 u8 ipatoe_bits[128] = {0, };
203 int rc = 0;
204
205 if (!card->ipato.enabled)
206 return 0;
207
208 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
209 (addr->proto == QETH_PROT_IPV4)? 4:16);
210 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
211 if (addr->proto != ipatoe->proto)
212 continue;
213 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
214 (ipatoe->proto == QETH_PROT_IPV4) ?
215 4 : 16);
216 if (addr->proto == QETH_PROT_IPV4)
217 rc = !memcmp(addr_bits, ipatoe_bits,
218 min(32, ipatoe->mask_bits));
219 else
220 rc = !memcmp(addr_bits, ipatoe_bits,
221 min(128, ipatoe->mask_bits));
222 if (rc)
223 break;
224 }
225 /* invert? */
226 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
227 rc = !rc;
228 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
229 rc = !rc;
230
231 return rc;
232 }
233
234 /*
235 * Add IP to be added to todo list. If there is already an "add todo"
236 * in this list we just incremenent the reference count.
237 * Returns 0 if we just incremented reference count.
238 */
239 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
240 struct qeth_ipaddr *addr, int add)
241 {
242 struct qeth_ipaddr *tmp, *t;
243 int found = 0;
244
245 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
246 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
247 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
248 return 0;
249 if ((tmp->proto == QETH_PROT_IPV4) &&
250 (addr->proto == QETH_PROT_IPV4) &&
251 (tmp->type == addr->type) &&
252 (tmp->is_multicast == addr->is_multicast) &&
253 (tmp->u.a4.addr == addr->u.a4.addr) &&
254 (tmp->u.a4.mask == addr->u.a4.mask)) {
255 found = 1;
256 break;
257 }
258 if ((tmp->proto == QETH_PROT_IPV6) &&
259 (addr->proto == QETH_PROT_IPV6) &&
260 (tmp->type == addr->type) &&
261 (tmp->is_multicast == addr->is_multicast) &&
262 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
263 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
264 sizeof(struct in6_addr)) == 0)) {
265 found = 1;
266 break;
267 }
268 }
269 if (found) {
270 if (addr->users != 0)
271 tmp->users += addr->users;
272 else
273 tmp->users += add ? 1 : -1;
274 if (tmp->users == 0) {
275 list_del(&tmp->entry);
276 kfree(tmp);
277 }
278 return 0;
279 } else {
280 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
281 list_add(&addr->entry, card->ip_tbd_list);
282 else {
283 if (addr->users == 0)
284 addr->users += add ? 1 : -1;
285 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
286 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
287 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
288 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
289 }
290 list_add_tail(&addr->entry, card->ip_tbd_list);
291 }
292 return 1;
293 }
294 }
295
296 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
297 {
298 unsigned long flags;
299 int rc = 0;
300
301 QETH_DBF_TEXT(TRACE, 4, "delip");
302
303 if (addr->proto == QETH_PROT_IPV4)
304 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
305 else {
306 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
307 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
308 }
309 spin_lock_irqsave(&card->ip_lock, flags);
310 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
311 spin_unlock_irqrestore(&card->ip_lock, flags);
312 return rc;
313 }
314
315 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
316 {
317 unsigned long flags;
318 int rc = 0;
319
320 QETH_DBF_TEXT(TRACE, 4, "addip");
321 if (addr->proto == QETH_PROT_IPV4)
322 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
323 else {
324 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
325 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
326 }
327 spin_lock_irqsave(&card->ip_lock, flags);
328 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
329 spin_unlock_irqrestore(&card->ip_lock, flags);
330 return rc;
331 }
332
333
334 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
335 enum qeth_prot_versions prot)
336 {
337 struct qeth_ipaddr *addr;
338
339 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
340 if (addr == NULL) {
341 return NULL;
342 }
343 addr->type = QETH_IP_TYPE_NORMAL;
344 addr->proto = prot;
345 return addr;
346 }
347
348 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
349 {
350 struct qeth_ipaddr *iptodo;
351 unsigned long flags;
352
353 QETH_DBF_TEXT(TRACE, 4, "delmc");
354 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
355 if (!iptodo) {
356 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
357 return;
358 }
359 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
360 spin_lock_irqsave(&card->ip_lock, flags);
361 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
362 kfree(iptodo);
363 spin_unlock_irqrestore(&card->ip_lock, flags);
364 }
365
366 /*
367 * Add/remove address to/from card's ip list, i.e. try to add or remove
368 * reference to/from an IP address that is already registered on the card.
369 * Returns:
370 * 0 address was on card and its reference count has been adjusted,
371 * but is still > 0, so nothing has to be done
372 * also returns 0 if card was not on card and the todo was to delete
373 * the address -> there is also nothing to be done
374 * 1 address was not on card and the todo is to add it to the card's ip
375 * list
376 * -1 address was on card and its reference count has been decremented
377 * to <= 0 by the todo -> address must be removed from card
378 */
379 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
380 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
381 {
382 struct qeth_ipaddr *addr;
383 int found = 0;
384
385 list_for_each_entry(addr, &card->ip_list, entry) {
386 if ((addr->proto == QETH_PROT_IPV4) &&
387 (todo->proto == QETH_PROT_IPV4) &&
388 (addr->type == todo->type) &&
389 (addr->u.a4.addr == todo->u.a4.addr) &&
390 (addr->u.a4.mask == todo->u.a4.mask)) {
391 found = 1;
392 break;
393 }
394 if ((addr->proto == QETH_PROT_IPV6) &&
395 (todo->proto == QETH_PROT_IPV6) &&
396 (addr->type == todo->type) &&
397 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
398 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
399 sizeof(struct in6_addr)) == 0)) {
400 found = 1;
401 break;
402 }
403 }
404 if (found) {
405 addr->users += todo->users;
406 if (addr->users <= 0) {
407 *__addr = addr;
408 return -1;
409 } else {
410 /* for VIPA and RXIP limit refcount to 1 */
411 if (addr->type != QETH_IP_TYPE_NORMAL)
412 addr->users = 1;
413 return 0;
414 }
415 }
416 if (todo->users > 0) {
417 /* for VIPA and RXIP limit refcount to 1 */
418 if (todo->type != QETH_IP_TYPE_NORMAL)
419 todo->users = 1;
420 return 1;
421 } else
422 return 0;
423 }
424
425 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
426 unsigned long *flags)
427 {
428 struct list_head fail_list;
429 struct qeth_ipaddr *addr, *tmp;
430 int rc;
431
432 INIT_LIST_HEAD(&fail_list);
433 again:
434 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
435 if (addr->is_multicast) {
436 list_del(&addr->entry);
437 spin_unlock_irqrestore(&card->ip_lock, *flags);
438 rc = qeth_l3_deregister_addr_entry(card, addr);
439 spin_lock_irqsave(&card->ip_lock, *flags);
440 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
441 kfree(addr);
442 else
443 list_add_tail(&addr->entry, &fail_list);
444 goto again;
445 }
446 }
447 list_splice(&fail_list, &card->ip_list);
448 }
449
450 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
451 {
452 struct list_head *tbd_list;
453 struct qeth_ipaddr *todo, *addr;
454 unsigned long flags;
455 int rc;
456
457 QETH_DBF_TEXT(TRACE, 2, "sdiplist");
458 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
459
460 spin_lock_irqsave(&card->ip_lock, flags);
461 tbd_list = card->ip_tbd_list;
462 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
463 if (!card->ip_tbd_list) {
464 QETH_DBF_TEXT(TRACE, 0, "silnomem");
465 card->ip_tbd_list = tbd_list;
466 spin_unlock_irqrestore(&card->ip_lock, flags);
467 return;
468 } else
469 INIT_LIST_HEAD(card->ip_tbd_list);
470
471 while (!list_empty(tbd_list)) {
472 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
473 list_del(&todo->entry);
474 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
475 __qeth_l3_delete_all_mc(card, &flags);
476 kfree(todo);
477 continue;
478 }
479 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
480 if (rc == 0) {
481 /* nothing to be done; only adjusted refcount */
482 kfree(todo);
483 } else if (rc == 1) {
484 /* new entry to be added to on-card list */
485 spin_unlock_irqrestore(&card->ip_lock, flags);
486 rc = qeth_l3_register_addr_entry(card, todo);
487 spin_lock_irqsave(&card->ip_lock, flags);
488 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
489 list_add_tail(&todo->entry, &card->ip_list);
490 else
491 kfree(todo);
492 } else if (rc == -1) {
493 /* on-card entry to be removed */
494 list_del_init(&addr->entry);
495 spin_unlock_irqrestore(&card->ip_lock, flags);
496 rc = qeth_l3_deregister_addr_entry(card, addr);
497 spin_lock_irqsave(&card->ip_lock, flags);
498 if (!rc || (rc == IPA_RC_PRIMARY_ALREADY_DEFINED))
499 kfree(addr);
500 else
501 list_add_tail(&addr->entry, &card->ip_list);
502 kfree(todo);
503 }
504 }
505 spin_unlock_irqrestore(&card->ip_lock, flags);
506 kfree(tbd_list);
507 }
508
509 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
510 int recover)
511 {
512 struct qeth_ipaddr *addr, *tmp;
513 unsigned long flags;
514
515 QETH_DBF_TEXT(TRACE, 4, "clearip");
516 spin_lock_irqsave(&card->ip_lock, flags);
517 /* clear todo list */
518 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
519 list_del(&addr->entry);
520 kfree(addr);
521 }
522
523 while (!list_empty(&card->ip_list)) {
524 addr = list_entry(card->ip_list.next,
525 struct qeth_ipaddr, entry);
526 list_del_init(&addr->entry);
527 if (clean) {
528 spin_unlock_irqrestore(&card->ip_lock, flags);
529 qeth_l3_deregister_addr_entry(card, addr);
530 spin_lock_irqsave(&card->ip_lock, flags);
531 }
532 if (!recover || addr->is_multicast) {
533 kfree(addr);
534 continue;
535 }
536 list_add_tail(&addr->entry, card->ip_tbd_list);
537 }
538 spin_unlock_irqrestore(&card->ip_lock, flags);
539 }
540
541 static int qeth_l3_address_exists_in_list(struct list_head *list,
542 struct qeth_ipaddr *addr, int same_type)
543 {
544 struct qeth_ipaddr *tmp;
545
546 list_for_each_entry(tmp, list, entry) {
547 if ((tmp->proto == QETH_PROT_IPV4) &&
548 (addr->proto == QETH_PROT_IPV4) &&
549 ((same_type && (tmp->type == addr->type)) ||
550 (!same_type && (tmp->type != addr->type))) &&
551 (tmp->u.a4.addr == addr->u.a4.addr))
552 return 1;
553
554 if ((tmp->proto == QETH_PROT_IPV6) &&
555 (addr->proto == QETH_PROT_IPV6) &&
556 ((same_type && (tmp->type == addr->type)) ||
557 (!same_type && (tmp->type != addr->type))) &&
558 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
559 sizeof(struct in6_addr)) == 0))
560 return 1;
561
562 }
563 return 0;
564 }
565
566 static int qeth_l3_send_setdelmc(struct qeth_card *card,
567 struct qeth_ipaddr *addr, int ipacmd)
568 {
569 int rc;
570 struct qeth_cmd_buffer *iob;
571 struct qeth_ipa_cmd *cmd;
572
573 QETH_DBF_TEXT(TRACE, 4, "setdelmc");
574
575 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
576 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
577 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
578 if (addr->proto == QETH_PROT_IPV6)
579 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
580 sizeof(struct in6_addr));
581 else
582 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
583
584 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
585
586 return rc;
587 }
588
589 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
590 {
591 int i, j;
592 for (i = 0; i < 16; i++) {
593 j = (len) - (i * 8);
594 if (j >= 8)
595 netmask[i] = 0xff;
596 else if (j > 0)
597 netmask[i] = (u8)(0xFF00 >> j);
598 else
599 netmask[i] = 0;
600 }
601 }
602
603 static int qeth_l3_send_setdelip(struct qeth_card *card,
604 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
605 {
606 int rc;
607 struct qeth_cmd_buffer *iob;
608 struct qeth_ipa_cmd *cmd;
609 __u8 netmask[16];
610
611 QETH_DBF_TEXT(TRACE, 4, "setdelip");
612 QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
613
614 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
615 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
616 if (addr->proto == QETH_PROT_IPV6) {
617 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
618 sizeof(struct in6_addr));
619 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
620 memcpy(cmd->data.setdelip6.mask, netmask,
621 sizeof(struct in6_addr));
622 cmd->data.setdelip6.flags = flags;
623 } else {
624 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
625 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
626 cmd->data.setdelip4.flags = flags;
627 }
628
629 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
630
631 return rc;
632 }
633
634 static int qeth_l3_send_setrouting(struct qeth_card *card,
635 enum qeth_routing_types type, enum qeth_prot_versions prot)
636 {
637 int rc;
638 struct qeth_ipa_cmd *cmd;
639 struct qeth_cmd_buffer *iob;
640
641 QETH_DBF_TEXT(TRACE, 4, "setroutg");
642 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
643 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
644 cmd->data.setrtg.type = (type);
645 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
646
647 return rc;
648 }
649
650 static void qeth_l3_correct_routing_type(struct qeth_card *card,
651 enum qeth_routing_types *type, enum qeth_prot_versions prot)
652 {
653 if (card->info.type == QETH_CARD_TYPE_IQD) {
654 switch (*type) {
655 case NO_ROUTER:
656 case PRIMARY_CONNECTOR:
657 case SECONDARY_CONNECTOR:
658 case MULTICAST_ROUTER:
659 return;
660 default:
661 goto out_inval;
662 }
663 } else {
664 switch (*type) {
665 case NO_ROUTER:
666 case PRIMARY_ROUTER:
667 case SECONDARY_ROUTER:
668 return;
669 case MULTICAST_ROUTER:
670 if (qeth_is_ipafunc_supported(card, prot,
671 IPA_OSA_MC_ROUTER))
672 return;
673 default:
674 goto out_inval;
675 }
676 }
677 out_inval:
678 *type = NO_ROUTER;
679 }
680
681 int qeth_l3_setrouting_v4(struct qeth_card *card)
682 {
683 int rc;
684
685 QETH_DBF_TEXT(TRACE, 3, "setrtg4");
686
687 qeth_l3_correct_routing_type(card, &card->options.route4.type,
688 QETH_PROT_IPV4);
689
690 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
691 QETH_PROT_IPV4);
692 if (rc) {
693 card->options.route4.type = NO_ROUTER;
694 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
695 " on %s. Type set to 'no router'.\n", rc,
696 QETH_CARD_IFNAME(card));
697 }
698 return rc;
699 }
700
701 int qeth_l3_setrouting_v6(struct qeth_card *card)
702 {
703 int rc = 0;
704
705 QETH_DBF_TEXT(TRACE, 3, "setrtg6");
706 #ifdef CONFIG_QETH_IPV6
707
708 if (!qeth_is_supported(card, IPA_IPV6))
709 return 0;
710 qeth_l3_correct_routing_type(card, &card->options.route6.type,
711 QETH_PROT_IPV6);
712
713 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
714 QETH_PROT_IPV6);
715 if (rc) {
716 card->options.route6.type = NO_ROUTER;
717 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
718 " on %s. Type set to 'no router'.\n", rc,
719 QETH_CARD_IFNAME(card));
720 }
721 #endif
722 return rc;
723 }
724
725 /*
726 * IP address takeover related functions
727 */
728 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
729 {
730
731 struct qeth_ipato_entry *ipatoe, *tmp;
732 unsigned long flags;
733
734 spin_lock_irqsave(&card->ip_lock, flags);
735 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
736 list_del(&ipatoe->entry);
737 kfree(ipatoe);
738 }
739 spin_unlock_irqrestore(&card->ip_lock, flags);
740 }
741
742 int qeth_l3_add_ipato_entry(struct qeth_card *card,
743 struct qeth_ipato_entry *new)
744 {
745 struct qeth_ipato_entry *ipatoe;
746 unsigned long flags;
747 int rc = 0;
748
749 QETH_DBF_TEXT(TRACE, 2, "addipato");
750 spin_lock_irqsave(&card->ip_lock, flags);
751 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
752 if (ipatoe->proto != new->proto)
753 continue;
754 if (!memcmp(ipatoe->addr, new->addr,
755 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
756 (ipatoe->mask_bits == new->mask_bits)) {
757 rc = -EEXIST;
758 break;
759 }
760 }
761 if (!rc)
762 list_add_tail(&new->entry, &card->ipato.entries);
763
764 spin_unlock_irqrestore(&card->ip_lock, flags);
765 return rc;
766 }
767
768 void qeth_l3_del_ipato_entry(struct qeth_card *card,
769 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
770 {
771 struct qeth_ipato_entry *ipatoe, *tmp;
772 unsigned long flags;
773
774 QETH_DBF_TEXT(TRACE, 2, "delipato");
775 spin_lock_irqsave(&card->ip_lock, flags);
776 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
777 if (ipatoe->proto != proto)
778 continue;
779 if (!memcmp(ipatoe->addr, addr,
780 (proto == QETH_PROT_IPV4)? 4:16) &&
781 (ipatoe->mask_bits == mask_bits)) {
782 list_del(&ipatoe->entry);
783 kfree(ipatoe);
784 }
785 }
786 spin_unlock_irqrestore(&card->ip_lock, flags);
787 }
788
789 /*
790 * VIPA related functions
791 */
792 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
793 const u8 *addr)
794 {
795 struct qeth_ipaddr *ipaddr;
796 unsigned long flags;
797 int rc = 0;
798
799 ipaddr = qeth_l3_get_addr_buffer(proto);
800 if (ipaddr) {
801 if (proto == QETH_PROT_IPV4) {
802 QETH_DBF_TEXT(TRACE, 2, "addvipa4");
803 memcpy(&ipaddr->u.a4.addr, addr, 4);
804 ipaddr->u.a4.mask = 0;
805 } else if (proto == QETH_PROT_IPV6) {
806 QETH_DBF_TEXT(TRACE, 2, "addvipa6");
807 memcpy(&ipaddr->u.a6.addr, addr, 16);
808 ipaddr->u.a6.pfxlen = 0;
809 }
810 ipaddr->type = QETH_IP_TYPE_VIPA;
811 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
812 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
813 } else
814 return -ENOMEM;
815 spin_lock_irqsave(&card->ip_lock, flags);
816 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
817 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
818 rc = -EEXIST;
819 spin_unlock_irqrestore(&card->ip_lock, flags);
820 if (rc) {
821 return rc;
822 }
823 if (!qeth_l3_add_ip(card, ipaddr))
824 kfree(ipaddr);
825 qeth_l3_set_ip_addr_list(card);
826 return rc;
827 }
828
829 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
830 const u8 *addr)
831 {
832 struct qeth_ipaddr *ipaddr;
833
834 ipaddr = qeth_l3_get_addr_buffer(proto);
835 if (ipaddr) {
836 if (proto == QETH_PROT_IPV4) {
837 QETH_DBF_TEXT(TRACE, 2, "delvipa4");
838 memcpy(&ipaddr->u.a4.addr, addr, 4);
839 ipaddr->u.a4.mask = 0;
840 } else if (proto == QETH_PROT_IPV6) {
841 QETH_DBF_TEXT(TRACE, 2, "delvipa6");
842 memcpy(&ipaddr->u.a6.addr, addr, 16);
843 ipaddr->u.a6.pfxlen = 0;
844 }
845 ipaddr->type = QETH_IP_TYPE_VIPA;
846 } else
847 return;
848 if (!qeth_l3_delete_ip(card, ipaddr))
849 kfree(ipaddr);
850 qeth_l3_set_ip_addr_list(card);
851 }
852
853 /*
854 * proxy ARP related functions
855 */
856 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
857 const u8 *addr)
858 {
859 struct qeth_ipaddr *ipaddr;
860 unsigned long flags;
861 int rc = 0;
862
863 ipaddr = qeth_l3_get_addr_buffer(proto);
864 if (ipaddr) {
865 if (proto == QETH_PROT_IPV4) {
866 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
867 memcpy(&ipaddr->u.a4.addr, addr, 4);
868 ipaddr->u.a4.mask = 0;
869 } else if (proto == QETH_PROT_IPV6) {
870 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
871 memcpy(&ipaddr->u.a6.addr, addr, 16);
872 ipaddr->u.a6.pfxlen = 0;
873 }
874 ipaddr->type = QETH_IP_TYPE_RXIP;
875 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
876 ipaddr->del_flags = 0;
877 } else
878 return -ENOMEM;
879 spin_lock_irqsave(&card->ip_lock, flags);
880 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
881 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
882 rc = -EEXIST;
883 spin_unlock_irqrestore(&card->ip_lock, flags);
884 if (rc) {
885 return rc;
886 }
887 if (!qeth_l3_add_ip(card, ipaddr))
888 kfree(ipaddr);
889 qeth_l3_set_ip_addr_list(card);
890 return 0;
891 }
892
893 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
894 const u8 *addr)
895 {
896 struct qeth_ipaddr *ipaddr;
897
898 ipaddr = qeth_l3_get_addr_buffer(proto);
899 if (ipaddr) {
900 if (proto == QETH_PROT_IPV4) {
901 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
902 memcpy(&ipaddr->u.a4.addr, addr, 4);
903 ipaddr->u.a4.mask = 0;
904 } else if (proto == QETH_PROT_IPV6) {
905 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
906 memcpy(&ipaddr->u.a6.addr, addr, 16);
907 ipaddr->u.a6.pfxlen = 0;
908 }
909 ipaddr->type = QETH_IP_TYPE_RXIP;
910 } else
911 return;
912 if (!qeth_l3_delete_ip(card, ipaddr))
913 kfree(ipaddr);
914 qeth_l3_set_ip_addr_list(card);
915 }
916
917 static int qeth_l3_register_addr_entry(struct qeth_card *card,
918 struct qeth_ipaddr *addr)
919 {
920 char buf[50];
921 int rc = 0;
922 int cnt = 3;
923
924 if (addr->proto == QETH_PROT_IPV4) {
925 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
926 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
927 } else if (addr->proto == QETH_PROT_IPV6) {
928 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
929 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
930 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
931 } else {
932 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
933 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
934 }
935 do {
936 if (addr->is_multicast)
937 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
938 else
939 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
940 addr->set_flags);
941 if (rc)
942 QETH_DBF_TEXT(TRACE, 2, "failed");
943 } while ((--cnt > 0) && rc);
944 if (rc) {
945 QETH_DBF_TEXT(TRACE, 2, "FAILED");
946 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
947 dev_warn(&card->gdev->dev,
948 "Registering IP address %s failed\n", buf);
949 }
950 return rc;
951 }
952
953 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
954 struct qeth_ipaddr *addr)
955 {
956 int rc = 0;
957
958 if (addr->proto == QETH_PROT_IPV4) {
959 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
960 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
961 } else if (addr->proto == QETH_PROT_IPV6) {
962 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
963 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
964 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
965 } else {
966 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
967 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
968 }
969 if (addr->is_multicast)
970 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
971 else
972 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
973 addr->del_flags);
974 if (rc)
975 QETH_DBF_TEXT(TRACE, 2, "failed");
976
977 return rc;
978 }
979
980 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
981 {
982 if (cast_type == RTN_MULTICAST)
983 return QETH_CAST_MULTICAST;
984 if (cast_type == RTN_BROADCAST)
985 return QETH_CAST_BROADCAST;
986 return QETH_CAST_UNICAST;
987 }
988
989 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
990 {
991 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
992 if (cast_type == RTN_MULTICAST)
993 return ct | QETH_CAST_MULTICAST;
994 if (cast_type == RTN_ANYCAST)
995 return ct | QETH_CAST_ANYCAST;
996 if (cast_type == RTN_BROADCAST)
997 return ct | QETH_CAST_BROADCAST;
998 return ct | QETH_CAST_UNICAST;
999 }
1000
1001 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
1002 __u32 mode)
1003 {
1004 int rc;
1005 struct qeth_cmd_buffer *iob;
1006 struct qeth_ipa_cmd *cmd;
1007
1008 QETH_DBF_TEXT(TRACE, 4, "adpmode");
1009
1010 iob = qeth_get_adapter_cmd(card, command,
1011 sizeof(struct qeth_ipacmd_setadpparms));
1012 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1013 cmd->data.setadapterparms.data.mode = mode;
1014 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
1015 NULL);
1016 return rc;
1017 }
1018
1019 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
1020 {
1021 int rc;
1022
1023 QETH_DBF_TEXT(TRACE, 4, "adphstr");
1024
1025 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1026 rc = qeth_l3_send_setadp_mode(card,
1027 IPA_SETADP_SET_BROADCAST_MODE,
1028 card->options.broadcast_mode);
1029 if (rc)
1030 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1031 "device %s: x%x\n",
1032 CARD_BUS_ID(card), rc);
1033 rc = qeth_l3_send_setadp_mode(card,
1034 IPA_SETADP_ALTER_MAC_ADDRESS,
1035 card->options.macaddr_mode);
1036 if (rc)
1037 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1038 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1039 return rc;
1040 }
1041 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1042 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1043 "to set broadcast mode, using ALLRINGS "
1044 "on device %s:\n", CARD_BUS_ID(card));
1045 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1046 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1047 "to set macaddr mode, using NONCANONICAL "
1048 "on device %s:\n", CARD_BUS_ID(card));
1049 return 0;
1050 }
1051
1052 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1053 {
1054 int rc;
1055
1056 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1057
1058 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1059 dev_info(&card->gdev->dev,
1060 "set adapter parameters not supported.\n");
1061 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1062 return 0;
1063 }
1064 rc = qeth_query_setadapterparms(card);
1065 if (rc) {
1066 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1067 "0x%x\n", dev_name(&card->gdev->dev), rc);
1068 return rc;
1069 }
1070 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1071 rc = qeth_setadpparms_change_macaddr(card);
1072 if (rc)
1073 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1074 " address failed\n");
1075 }
1076
1077 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1078 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1079 rc = qeth_l3_setadapter_hstr(card);
1080
1081 return rc;
1082 }
1083
1084 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1085 struct qeth_reply *reply, unsigned long data)
1086 {
1087 struct qeth_ipa_cmd *cmd;
1088
1089 QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1090
1091 cmd = (struct qeth_ipa_cmd *) data;
1092 if (cmd->hdr.return_code == 0) {
1093 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1094 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1095 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1096 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1097 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1098 }
1099 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1100 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1101 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1102 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1103 }
1104 return 0;
1105 }
1106
1107 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1108 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1109 __u16 len, enum qeth_prot_versions prot)
1110 {
1111 struct qeth_cmd_buffer *iob;
1112 struct qeth_ipa_cmd *cmd;
1113
1114 QETH_DBF_TEXT(TRACE, 4, "getasscm");
1115 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1116
1117 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1118 cmd->data.setassparms.hdr.assist_no = ipa_func;
1119 cmd->data.setassparms.hdr.length = 8 + len;
1120 cmd->data.setassparms.hdr.command_code = cmd_code;
1121 cmd->data.setassparms.hdr.return_code = 0;
1122 cmd->data.setassparms.hdr.seq_no = 0;
1123
1124 return iob;
1125 }
1126
1127 static int qeth_l3_send_setassparms(struct qeth_card *card,
1128 struct qeth_cmd_buffer *iob, __u16 len, long data,
1129 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1130 unsigned long),
1131 void *reply_param)
1132 {
1133 int rc;
1134 struct qeth_ipa_cmd *cmd;
1135
1136 QETH_DBF_TEXT(TRACE, 4, "sendassp");
1137
1138 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1139 if (len <= sizeof(__u32))
1140 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1141 else /* (len > sizeof(__u32)) */
1142 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1143
1144 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1145 return rc;
1146 }
1147
1148 #ifdef CONFIG_QETH_IPV6
1149 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1150 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1151 {
1152 int rc;
1153 struct qeth_cmd_buffer *iob;
1154
1155 QETH_DBF_TEXT(TRACE, 4, "simassp6");
1156 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1157 0, QETH_PROT_IPV6);
1158 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1159 qeth_l3_default_setassparms_cb, NULL);
1160 return rc;
1161 }
1162 #endif
1163
1164 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1165 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1166 {
1167 int rc;
1168 int length = 0;
1169 struct qeth_cmd_buffer *iob;
1170
1171 QETH_DBF_TEXT(TRACE, 4, "simassp4");
1172 if (data)
1173 length = sizeof(__u32);
1174 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1175 length, QETH_PROT_IPV4);
1176 rc = qeth_l3_send_setassparms(card, iob, length, data,
1177 qeth_l3_default_setassparms_cb, NULL);
1178 return rc;
1179 }
1180
1181 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1182 {
1183 int rc;
1184
1185 QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1186
1187 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1188 dev_info(&card->gdev->dev,
1189 "ARP processing not supported on %s!\n",
1190 QETH_CARD_IFNAME(card));
1191 return 0;
1192 }
1193 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1194 IPA_CMD_ASS_START, 0);
1195 if (rc) {
1196 dev_warn(&card->gdev->dev,
1197 "Starting ARP processing support for %s failed\n",
1198 QETH_CARD_IFNAME(card));
1199 }
1200 return rc;
1201 }
1202
1203 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1204 {
1205 int rc;
1206
1207 QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1208
1209 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1210 dev_info(&card->gdev->dev,
1211 "Hardware IP fragmentation not supported on %s\n",
1212 QETH_CARD_IFNAME(card));
1213 return -EOPNOTSUPP;
1214 }
1215
1216 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1217 IPA_CMD_ASS_START, 0);
1218 if (rc) {
1219 dev_warn(&card->gdev->dev,
1220 "Starting IP fragmentation support for %s failed\n",
1221 QETH_CARD_IFNAME(card));
1222 } else
1223 dev_info(&card->gdev->dev,
1224 "Hardware IP fragmentation enabled \n");
1225 return rc;
1226 }
1227
1228 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1229 {
1230 int rc;
1231
1232 QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1233
1234 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1235 dev_info(&card->gdev->dev,
1236 "Inbound source MAC-address not supported on %s\n",
1237 QETH_CARD_IFNAME(card));
1238 return -EOPNOTSUPP;
1239 }
1240
1241 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1242 IPA_CMD_ASS_START, 0);
1243 if (rc)
1244 dev_warn(&card->gdev->dev,
1245 "Starting source MAC-address support for %s failed\n",
1246 QETH_CARD_IFNAME(card));
1247 return rc;
1248 }
1249
1250 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1251 {
1252 int rc = 0;
1253
1254 QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1255
1256 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1257 dev_info(&card->gdev->dev,
1258 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1259 return -EOPNOTSUPP;
1260 }
1261
1262 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1263 IPA_CMD_ASS_START, 0);
1264 if (rc) {
1265 dev_warn(&card->gdev->dev,
1266 "Starting VLAN support for %s failed\n",
1267 QETH_CARD_IFNAME(card));
1268 } else {
1269 dev_info(&card->gdev->dev, "VLAN enabled\n");
1270 }
1271 return rc;
1272 }
1273
1274 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1275 {
1276 int rc;
1277
1278 QETH_DBF_TEXT(TRACE, 3, "stmcast");
1279
1280 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1281 dev_info(&card->gdev->dev,
1282 "Multicast not supported on %s\n",
1283 QETH_CARD_IFNAME(card));
1284 return -EOPNOTSUPP;
1285 }
1286
1287 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1288 IPA_CMD_ASS_START, 0);
1289 if (rc) {
1290 dev_warn(&card->gdev->dev,
1291 "Starting multicast support for %s failed\n",
1292 QETH_CARD_IFNAME(card));
1293 } else {
1294 dev_info(&card->gdev->dev, "Multicast enabled\n");
1295 card->dev->flags |= IFF_MULTICAST;
1296 }
1297 return rc;
1298 }
1299
1300 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1301 struct qeth_reply *reply, unsigned long data)
1302 {
1303 struct qeth_ipa_cmd *cmd;
1304
1305 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1306
1307 cmd = (struct qeth_ipa_cmd *) data;
1308 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1309 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1310 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1311 } else {
1312 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1313 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1314 }
1315 QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1316 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1317 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1318 return 0;
1319 }
1320
1321 static int qeth_l3_query_ipassists(struct qeth_card *card,
1322 enum qeth_prot_versions prot)
1323 {
1324 int rc;
1325 struct qeth_cmd_buffer *iob;
1326
1327 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1328 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1329 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1330 return rc;
1331 }
1332
1333 #ifdef CONFIG_QETH_IPV6
1334 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1335 {
1336 int rc;
1337
1338 QETH_DBF_TEXT(TRACE, 3, "softipv6");
1339
1340 if (card->info.type == QETH_CARD_TYPE_IQD)
1341 goto out;
1342
1343 rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1344 if (rc) {
1345 dev_err(&card->gdev->dev,
1346 "Activating IPv6 support for %s failed\n",
1347 QETH_CARD_IFNAME(card));
1348 return rc;
1349 }
1350 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1351 IPA_CMD_ASS_START, 3);
1352 if (rc) {
1353 dev_err(&card->gdev->dev,
1354 "Activating IPv6 support for %s failed\n",
1355 QETH_CARD_IFNAME(card));
1356 return rc;
1357 }
1358 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1359 IPA_CMD_ASS_START);
1360 if (rc) {
1361 dev_err(&card->gdev->dev,
1362 "Activating IPv6 support for %s failed\n",
1363 QETH_CARD_IFNAME(card));
1364 return rc;
1365 }
1366 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1367 IPA_CMD_ASS_START);
1368 if (rc) {
1369 dev_warn(&card->gdev->dev,
1370 "Enabling the passthrough mode for %s failed\n",
1371 QETH_CARD_IFNAME(card));
1372 return rc;
1373 }
1374 out:
1375 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1376 return 0;
1377 }
1378 #endif
1379
1380 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1381 {
1382 int rc = 0;
1383
1384 QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1385
1386 if (!qeth_is_supported(card, IPA_IPV6)) {
1387 dev_info(&card->gdev->dev,
1388 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1389 return 0;
1390 }
1391 #ifdef CONFIG_QETH_IPV6
1392 rc = qeth_l3_softsetup_ipv6(card);
1393 #endif
1394 return rc ;
1395 }
1396
1397 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1398 {
1399 int rc;
1400
1401 QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1402 card->info.broadcast_capable = 0;
1403 if (!qeth_is_supported(card, IPA_FILTERING)) {
1404 dev_info(&card->gdev->dev,
1405 "Broadcast not supported on %s\n",
1406 QETH_CARD_IFNAME(card));
1407 rc = -EOPNOTSUPP;
1408 goto out;
1409 }
1410 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1411 IPA_CMD_ASS_START, 0);
1412 if (rc) {
1413 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1414 "%s failed\n", QETH_CARD_IFNAME(card));
1415 goto out;
1416 }
1417
1418 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1419 IPA_CMD_ASS_CONFIGURE, 1);
1420 if (rc) {
1421 dev_warn(&card->gdev->dev,
1422 "Setting up broadcast filtering for %s failed\n",
1423 QETH_CARD_IFNAME(card));
1424 goto out;
1425 }
1426 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1427 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1428 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1429 IPA_CMD_ASS_ENABLE, 1);
1430 if (rc) {
1431 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1432 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1433 goto out;
1434 }
1435 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1436 out:
1437 if (card->info.broadcast_capable)
1438 card->dev->flags |= IFF_BROADCAST;
1439 else
1440 card->dev->flags &= ~IFF_BROADCAST;
1441 return rc;
1442 }
1443
1444 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1445 {
1446 int rc;
1447
1448 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1449 IPA_CMD_ASS_START, 0);
1450 if (rc) {
1451 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1452 "failed, using SW checksumming\n",
1453 QETH_CARD_IFNAME(card));
1454 return rc;
1455 }
1456 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1457 IPA_CMD_ASS_ENABLE,
1458 card->info.csum_mask);
1459 if (rc) {
1460 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1461 "failed, using SW checksumming\n",
1462 QETH_CARD_IFNAME(card));
1463 return rc;
1464 }
1465 return 0;
1466 }
1467
1468 int qeth_l3_set_rx_csum(struct qeth_card *card,
1469 enum qeth_checksum_types csum_type)
1470 {
1471 int rc = 0;
1472
1473 if (card->options.checksum_type == HW_CHECKSUMMING) {
1474 if ((csum_type != HW_CHECKSUMMING) &&
1475 (card->state != CARD_STATE_DOWN)) {
1476 rc = qeth_l3_send_simple_setassparms(card,
1477 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1478 if (rc)
1479 return -EIO;
1480 }
1481 } else {
1482 if (csum_type == HW_CHECKSUMMING) {
1483 if (card->state != CARD_STATE_DOWN) {
1484 if (!qeth_is_supported(card,
1485 IPA_INBOUND_CHECKSUM))
1486 return -EPERM;
1487 rc = qeth_l3_send_checksum_command(card);
1488 if (rc)
1489 return -EIO;
1490 }
1491 }
1492 }
1493 card->options.checksum_type = csum_type;
1494 return rc;
1495 }
1496
1497 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1498 {
1499 int rc = 0;
1500
1501 QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1502
1503 if (card->options.checksum_type == NO_CHECKSUMMING) {
1504 dev_info(&card->gdev->dev,
1505 "Using no checksumming on %s.\n",
1506 QETH_CARD_IFNAME(card));
1507 return 0;
1508 }
1509 if (card->options.checksum_type == SW_CHECKSUMMING) {
1510 dev_info(&card->gdev->dev,
1511 "Using SW checksumming on %s.\n",
1512 QETH_CARD_IFNAME(card));
1513 return 0;
1514 }
1515 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1516 dev_info(&card->gdev->dev,
1517 "Inbound HW Checksumming not "
1518 "supported on %s,\ncontinuing "
1519 "using Inbound SW Checksumming\n",
1520 QETH_CARD_IFNAME(card));
1521 card->options.checksum_type = SW_CHECKSUMMING;
1522 return 0;
1523 }
1524 rc = qeth_l3_send_checksum_command(card);
1525 if (!rc)
1526 dev_info(&card->gdev->dev,
1527 "HW Checksumming (inbound) enabled\n");
1528
1529 return rc;
1530 }
1531
1532 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1533 {
1534 int rc;
1535
1536 QETH_DBF_TEXT(TRACE, 3, "sttso");
1537
1538 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1539 dev_info(&card->gdev->dev,
1540 "Outbound TSO not supported on %s\n",
1541 QETH_CARD_IFNAME(card));
1542 rc = -EOPNOTSUPP;
1543 } else {
1544 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1545 IPA_CMD_ASS_START, 0);
1546 if (rc)
1547 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1548 "segmentation offload for %s failed\n",
1549 QETH_CARD_IFNAME(card));
1550 else
1551 dev_info(&card->gdev->dev,
1552 "Outbound TSO enabled\n");
1553 }
1554 if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1555 card->options.large_send = QETH_LARGE_SEND_NO;
1556 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1557 }
1558 return rc;
1559 }
1560
1561 static int qeth_l3_start_ipassists(struct qeth_card *card)
1562 {
1563 QETH_DBF_TEXT(TRACE, 3, "strtipas");
1564
1565 qeth_set_access_ctrl_online(card); /* go on*/
1566 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1567 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1568 qeth_l3_start_ipa_source_mac(card); /* go on*/
1569 qeth_l3_start_ipa_vlan(card); /* go on*/
1570 qeth_l3_start_ipa_multicast(card); /* go on*/
1571 qeth_l3_start_ipa_ipv6(card); /* go on*/
1572 qeth_l3_start_ipa_broadcast(card); /* go on*/
1573 qeth_l3_start_ipa_checksum(card); /* go on*/
1574 qeth_l3_start_ipa_tso(card); /* go on*/
1575 return 0;
1576 }
1577
1578 static int qeth_l3_put_unique_id(struct qeth_card *card)
1579 {
1580
1581 int rc = 0;
1582 struct qeth_cmd_buffer *iob;
1583 struct qeth_ipa_cmd *cmd;
1584
1585 QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1586
1587 if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1588 UNIQUE_ID_NOT_BY_CARD)
1589 return -1;
1590 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1591 QETH_PROT_IPV6);
1592 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1593 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1594 card->info.unique_id;
1595 memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1596 card->dev->dev_addr, OSA_ADDR_LEN);
1597 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1598 return rc;
1599 }
1600
1601 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1602 struct qeth_reply *reply, unsigned long data)
1603 {
1604 struct qeth_ipa_cmd *cmd;
1605
1606 cmd = (struct qeth_ipa_cmd *) data;
1607 if (cmd->hdr.return_code == 0)
1608 memcpy(card->dev->dev_addr,
1609 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1610 else
1611 random_ether_addr(card->dev->dev_addr);
1612
1613 return 0;
1614 }
1615
1616 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1617 {
1618 int rc = 0;
1619 struct qeth_cmd_buffer *iob;
1620 struct qeth_ipa_cmd *cmd;
1621
1622 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1623
1624 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1625 QETH_PROT_IPV6);
1626 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1627 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1628 card->info.unique_id;
1629
1630 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1631 NULL);
1632 return rc;
1633 }
1634
1635 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1636 struct qeth_reply *reply, unsigned long data)
1637 {
1638 struct qeth_ipa_cmd *cmd;
1639
1640 cmd = (struct qeth_ipa_cmd *) data;
1641 if (cmd->hdr.return_code == 0)
1642 card->info.unique_id = *((__u16 *)
1643 &cmd->data.create_destroy_addr.unique_id[6]);
1644 else {
1645 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1646 UNIQUE_ID_NOT_BY_CARD;
1647 dev_warn(&card->gdev->dev, "The network adapter failed to "
1648 "generate a unique ID\n");
1649 }
1650 return 0;
1651 }
1652
1653 static int qeth_l3_get_unique_id(struct qeth_card *card)
1654 {
1655 int rc = 0;
1656 struct qeth_cmd_buffer *iob;
1657 struct qeth_ipa_cmd *cmd;
1658
1659 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1660
1661 if (!qeth_is_supported(card, IPA_IPV6)) {
1662 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1663 UNIQUE_ID_NOT_BY_CARD;
1664 return 0;
1665 }
1666
1667 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1668 QETH_PROT_IPV6);
1669 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1670 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1671 card->info.unique_id;
1672
1673 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1674 return rc;
1675 }
1676
1677 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1678 struct net_device *dev)
1679 {
1680 if (dev->type == ARPHRD_IEEE802_TR)
1681 ip_tr_mc_map(ipm, mac);
1682 else
1683 ip_eth_mc_map(ipm, mac);
1684 }
1685
1686 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1687 {
1688 struct qeth_ipaddr *ipm;
1689 struct ip_mc_list *im4;
1690 char buf[MAX_ADDR_LEN];
1691
1692 QETH_DBF_TEXT(TRACE, 4, "addmc");
1693 for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1694 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1695 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1696 if (!ipm)
1697 continue;
1698 ipm->u.a4.addr = im4->multiaddr;
1699 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1700 ipm->is_multicast = 1;
1701 if (!qeth_l3_add_ip(card, ipm))
1702 kfree(ipm);
1703 }
1704 }
1705
1706 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1707 {
1708 struct in_device *in_dev;
1709 struct vlan_group *vg;
1710 int i;
1711
1712 QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1713 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1714 return;
1715
1716 vg = card->vlangrp;
1717 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1718 struct net_device *netdev = vlan_group_get_device(vg, i);
1719 if (netdev == NULL ||
1720 !(netdev->flags & IFF_UP))
1721 continue;
1722 in_dev = in_dev_get(netdev);
1723 if (!in_dev)
1724 continue;
1725 read_lock(&in_dev->mc_list_lock);
1726 qeth_l3_add_mc(card, in_dev);
1727 read_unlock(&in_dev->mc_list_lock);
1728 in_dev_put(in_dev);
1729 }
1730 }
1731
1732 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1733 {
1734 struct in_device *in4_dev;
1735
1736 QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1737 in4_dev = in_dev_get(card->dev);
1738 if (in4_dev == NULL)
1739 return;
1740 read_lock(&in4_dev->mc_list_lock);
1741 qeth_l3_add_mc(card, in4_dev);
1742 qeth_l3_add_vlan_mc(card);
1743 read_unlock(&in4_dev->mc_list_lock);
1744 in_dev_put(in4_dev);
1745 }
1746
1747 #ifdef CONFIG_QETH_IPV6
1748 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1749 {
1750 struct qeth_ipaddr *ipm;
1751 struct ifmcaddr6 *im6;
1752 char buf[MAX_ADDR_LEN];
1753
1754 QETH_DBF_TEXT(TRACE, 4, "addmc6");
1755 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1756 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1757 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1758 if (!ipm)
1759 continue;
1760 ipm->is_multicast = 1;
1761 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1762 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1763 sizeof(struct in6_addr));
1764 if (!qeth_l3_add_ip(card, ipm))
1765 kfree(ipm);
1766 }
1767 }
1768
1769 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1770 {
1771 struct inet6_dev *in_dev;
1772 struct vlan_group *vg;
1773 int i;
1774
1775 QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1776 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1777 return;
1778
1779 vg = card->vlangrp;
1780 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1781 struct net_device *netdev = vlan_group_get_device(vg, i);
1782 if (netdev == NULL ||
1783 !(netdev->flags & IFF_UP))
1784 continue;
1785 in_dev = in6_dev_get(netdev);
1786 if (!in_dev)
1787 continue;
1788 read_lock_bh(&in_dev->lock);
1789 qeth_l3_add_mc6(card, in_dev);
1790 read_unlock_bh(&in_dev->lock);
1791 in6_dev_put(in_dev);
1792 }
1793 }
1794
1795 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1796 {
1797 struct inet6_dev *in6_dev;
1798
1799 QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1800 if (!qeth_is_supported(card, IPA_IPV6))
1801 return ;
1802 in6_dev = in6_dev_get(card->dev);
1803 if (in6_dev == NULL)
1804 return;
1805 read_lock_bh(&in6_dev->lock);
1806 qeth_l3_add_mc6(card, in6_dev);
1807 qeth_l3_add_vlan_mc6(card);
1808 read_unlock_bh(&in6_dev->lock);
1809 in6_dev_put(in6_dev);
1810 }
1811 #endif /* CONFIG_QETH_IPV6 */
1812
1813 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1814 unsigned short vid)
1815 {
1816 struct in_device *in_dev;
1817 struct in_ifaddr *ifa;
1818 struct qeth_ipaddr *addr;
1819
1820 QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1821
1822 in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1823 if (!in_dev)
1824 return;
1825 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1826 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1827 if (addr) {
1828 addr->u.a4.addr = ifa->ifa_address;
1829 addr->u.a4.mask = ifa->ifa_mask;
1830 addr->type = QETH_IP_TYPE_NORMAL;
1831 if (!qeth_l3_delete_ip(card, addr))
1832 kfree(addr);
1833 }
1834 }
1835 in_dev_put(in_dev);
1836 }
1837
1838 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1839 unsigned short vid)
1840 {
1841 #ifdef CONFIG_QETH_IPV6
1842 struct inet6_dev *in6_dev;
1843 struct inet6_ifaddr *ifa;
1844 struct qeth_ipaddr *addr;
1845
1846 QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1847
1848 in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1849 if (!in6_dev)
1850 return;
1851 for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1852 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1853 if (addr) {
1854 memcpy(&addr->u.a6.addr, &ifa->addr,
1855 sizeof(struct in6_addr));
1856 addr->u.a6.pfxlen = ifa->prefix_len;
1857 addr->type = QETH_IP_TYPE_NORMAL;
1858 if (!qeth_l3_delete_ip(card, addr))
1859 kfree(addr);
1860 }
1861 }
1862 in6_dev_put(in6_dev);
1863 #endif /* CONFIG_QETH_IPV6 */
1864 }
1865
1866 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1867 unsigned short vid)
1868 {
1869 if (!card->vlangrp)
1870 return;
1871 qeth_l3_free_vlan_addresses4(card, vid);
1872 qeth_l3_free_vlan_addresses6(card, vid);
1873 }
1874
1875 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1876 struct vlan_group *grp)
1877 {
1878 struct qeth_card *card = dev->ml_priv;
1879 unsigned long flags;
1880
1881 QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1882 spin_lock_irqsave(&card->vlanlock, flags);
1883 card->vlangrp = grp;
1884 spin_unlock_irqrestore(&card->vlanlock, flags);
1885 }
1886
1887 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1888 {
1889 return;
1890 }
1891
1892 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1893 {
1894 struct qeth_card *card = dev->ml_priv;
1895 unsigned long flags;
1896
1897 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1898 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1899 QETH_DBF_TEXT(TRACE, 3, "kidREC");
1900 return;
1901 }
1902 spin_lock_irqsave(&card->vlanlock, flags);
1903 /* unregister IP addresses of vlan device */
1904 qeth_l3_free_vlan_addresses(card, vid);
1905 vlan_group_set_device(card->vlangrp, vid, NULL);
1906 spin_unlock_irqrestore(&card->vlanlock, flags);
1907 qeth_l3_set_multicast_list(card->dev);
1908 }
1909
1910 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1911 struct sk_buff *skb, struct qeth_hdr *hdr)
1912 {
1913 unsigned short vlan_id = 0;
1914 __be16 prot;
1915 struct iphdr *ip_hdr;
1916 unsigned char tg_addr[MAX_ADDR_LEN];
1917
1918 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1919 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1920 ETH_P_IP);
1921 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1922 case QETH_CAST_MULTICAST:
1923 switch (prot) {
1924 #ifdef CONFIG_QETH_IPV6
1925 case __constant_htons(ETH_P_IPV6):
1926 ndisc_mc_map((struct in6_addr *)
1927 skb->data + 24,
1928 tg_addr, card->dev, 0);
1929 break;
1930 #endif
1931 case __constant_htons(ETH_P_IP):
1932 ip_hdr = (struct iphdr *)skb->data;
1933 (card->dev->type == ARPHRD_IEEE802_TR) ?
1934 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1935 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1936 break;
1937 default:
1938 memcpy(tg_addr, card->dev->broadcast,
1939 card->dev->addr_len);
1940 }
1941 card->stats.multicast++;
1942 skb->pkt_type = PACKET_MULTICAST;
1943 break;
1944 case QETH_CAST_BROADCAST:
1945 memcpy(tg_addr, card->dev->broadcast,
1946 card->dev->addr_len);
1947 card->stats.multicast++;
1948 skb->pkt_type = PACKET_BROADCAST;
1949 break;
1950 case QETH_CAST_UNICAST:
1951 case QETH_CAST_ANYCAST:
1952 case QETH_CAST_NOCAST:
1953 default:
1954 skb->pkt_type = PACKET_HOST;
1955 memcpy(tg_addr, card->dev->dev_addr,
1956 card->dev->addr_len);
1957 }
1958 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1959 card->dev->header_ops->create(skb, card->dev, prot,
1960 tg_addr, &hdr->hdr.l3.dest_addr[2],
1961 card->dev->addr_len);
1962 else
1963 card->dev->header_ops->create(skb, card->dev, prot,
1964 tg_addr, "FAKELL", card->dev->addr_len);
1965 }
1966
1967 #ifdef CONFIG_TR
1968 if (card->dev->type == ARPHRD_IEEE802_TR)
1969 skb->protocol = tr_type_trans(skb, card->dev);
1970 else
1971 #endif
1972 skb->protocol = eth_type_trans(skb, card->dev);
1973
1974 if (hdr->hdr.l3.ext_flags &
1975 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1976 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1977 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1978 }
1979
1980 switch (card->options.checksum_type) {
1981 case SW_CHECKSUMMING:
1982 skb->ip_summed = CHECKSUM_NONE;
1983 break;
1984 case NO_CHECKSUMMING:
1985 skb->ip_summed = CHECKSUM_UNNECESSARY;
1986 break;
1987 case HW_CHECKSUMMING:
1988 if ((hdr->hdr.l3.ext_flags &
1989 (QETH_HDR_EXT_CSUM_HDR_REQ |
1990 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1991 (QETH_HDR_EXT_CSUM_HDR_REQ |
1992 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1993 skb->ip_summed = CHECKSUM_UNNECESSARY;
1994 else
1995 skb->ip_summed = CHECKSUM_NONE;
1996 }
1997
1998 return vlan_id;
1999 }
2000
2001 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
2002 struct qeth_qdio_buffer *buf, int index)
2003 {
2004 struct qdio_buffer_element *element;
2005 struct sk_buff *skb;
2006 struct qeth_hdr *hdr;
2007 int offset;
2008 __u16 vlan_tag = 0;
2009 unsigned int len;
2010
2011 /* get first element of current buffer */
2012 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
2013 offset = 0;
2014 if (card->options.performance_stats)
2015 card->perf_stats.bufs_rec++;
2016 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
2017 &offset, &hdr))) {
2018 skb->dev = card->dev;
2019 /* is device UP ? */
2020 if (!(card->dev->flags & IFF_UP)) {
2021 dev_kfree_skb_any(skb);
2022 continue;
2023 }
2024
2025 switch (hdr->hdr.l3.id) {
2026 case QETH_HEADER_TYPE_LAYER3:
2027 vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
2028 len = skb->len;
2029 if (vlan_tag)
2030 if (card->vlangrp)
2031 vlan_hwaccel_rx(skb, card->vlangrp,
2032 vlan_tag);
2033 else {
2034 dev_kfree_skb_any(skb);
2035 continue;
2036 }
2037 else
2038 netif_rx(skb);
2039 break;
2040 default:
2041 dev_kfree_skb_any(skb);
2042 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
2043 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2044 continue;
2045 }
2046
2047 card->stats.rx_packets++;
2048 card->stats.rx_bytes += len;
2049 }
2050 }
2051
2052 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2053 struct qeth_card *card)
2054 {
2055 int rc = 0;
2056 struct vlan_group *vg;
2057 int i;
2058
2059 vg = card->vlangrp;
2060 if (!vg)
2061 return rc;
2062
2063 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2064 if (vlan_group_get_device(vg, i) == dev) {
2065 rc = QETH_VLAN_CARD;
2066 break;
2067 }
2068 }
2069
2070 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2071 return 0;
2072
2073 return rc;
2074 }
2075
2076 static int qeth_l3_verify_dev(struct net_device *dev)
2077 {
2078 struct qeth_card *card;
2079 unsigned long flags;
2080 int rc = 0;
2081
2082 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2083 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2084 if (card->dev == dev) {
2085 rc = QETH_REAL_CARD;
2086 break;
2087 }
2088 rc = qeth_l3_verify_vlan_dev(dev, card);
2089 if (rc)
2090 break;
2091 }
2092 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2093
2094 return rc;
2095 }
2096
2097 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2098 {
2099 struct qeth_card *card = NULL;
2100 int rc;
2101
2102 rc = qeth_l3_verify_dev(dev);
2103 if (rc == QETH_REAL_CARD)
2104 card = dev->ml_priv;
2105 else if (rc == QETH_VLAN_CARD)
2106 card = vlan_dev_real_dev(dev)->ml_priv;
2107 if (card && card->options.layer2)
2108 card = NULL;
2109 QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2110 return card ;
2111 }
2112
2113 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2114 {
2115 int rc = 0;
2116
2117 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2118 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2119
2120 qeth_set_allowed_threads(card, 0, 1);
2121 if (card->read.state == CH_STATE_UP &&
2122 card->write.state == CH_STATE_UP &&
2123 (card->state == CARD_STATE_UP)) {
2124 if (recovery_mode)
2125 qeth_l3_stop(card->dev);
2126 else {
2127 if (card->dev) {
2128 rtnl_lock();
2129 dev_close(card->dev);
2130 rtnl_unlock();
2131 }
2132 }
2133 if (!card->use_hard_stop) {
2134 rc = qeth_send_stoplan(card);
2135 if (rc)
2136 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2137 }
2138 card->state = CARD_STATE_SOFTSETUP;
2139 }
2140 if (card->state == CARD_STATE_SOFTSETUP) {
2141 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2142 qeth_clear_ipacmd_list(card);
2143 card->state = CARD_STATE_HARDSETUP;
2144 }
2145 if (card->state == CARD_STATE_HARDSETUP) {
2146 if (!card->use_hard_stop &&
2147 (card->info.type != QETH_CARD_TYPE_IQD)) {
2148 rc = qeth_l3_put_unique_id(card);
2149 if (rc)
2150 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2151 }
2152 qeth_qdio_clear_card(card, 0);
2153 qeth_clear_qdio_buffers(card);
2154 qeth_clear_working_pool_list(card);
2155 card->state = CARD_STATE_DOWN;
2156 }
2157 if (card->state == CARD_STATE_DOWN) {
2158 qeth_clear_cmd_buffers(&card->read);
2159 qeth_clear_cmd_buffers(&card->write);
2160 }
2161 card->use_hard_stop = 0;
2162 return rc;
2163 }
2164
2165 static void qeth_l3_set_multicast_list(struct net_device *dev)
2166 {
2167 struct qeth_card *card = dev->ml_priv;
2168
2169 QETH_DBF_TEXT(TRACE, 3, "setmulti");
2170 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2171 (card->state != CARD_STATE_UP))
2172 return;
2173 qeth_l3_delete_mc_addresses(card);
2174 qeth_l3_add_multicast_ipv4(card);
2175 #ifdef CONFIG_QETH_IPV6
2176 qeth_l3_add_multicast_ipv6(card);
2177 #endif
2178 qeth_l3_set_ip_addr_list(card);
2179 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2180 return;
2181 qeth_setadp_promisc_mode(card);
2182 }
2183
2184 static const char *qeth_l3_arp_get_error_cause(int *rc)
2185 {
2186 switch (*rc) {
2187 case QETH_IPA_ARP_RC_FAILED:
2188 *rc = -EIO;
2189 return "operation failed";
2190 case QETH_IPA_ARP_RC_NOTSUPP:
2191 *rc = -EOPNOTSUPP;
2192 return "operation not supported";
2193 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2194 *rc = -EINVAL;
2195 return "argument out of range";
2196 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2197 *rc = -EOPNOTSUPP;
2198 return "query operation not supported";
2199 case QETH_IPA_ARP_RC_Q_NO_DATA:
2200 *rc = -ENOENT;
2201 return "no query data available";
2202 default:
2203 return "unknown error";
2204 }
2205 }
2206
2207 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2208 {
2209 int tmp;
2210 int rc;
2211
2212 QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2213
2214 /*
2215 * currently GuestLAN only supports the ARP assist function
2216 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2217 * thus we say EOPNOTSUPP for this ARP function
2218 */
2219 if (card->info.guestlan)
2220 return -EOPNOTSUPP;
2221 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2222 return -EOPNOTSUPP;
2223 }
2224 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2225 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2226 no_entries);
2227 if (rc) {
2228 tmp = rc;
2229 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2230 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2231 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2232 }
2233 return rc;
2234 }
2235
2236 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2237 struct qeth_arp_query_data *qdata, int entry_size,
2238 int uentry_size)
2239 {
2240 char *entry_ptr;
2241 char *uentry_ptr;
2242 int i;
2243
2244 entry_ptr = (char *)&qdata->data;
2245 uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2246 for (i = 0; i < qdata->no_entries; ++i) {
2247 /* strip off 32 bytes "media specific information" */
2248 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2249 entry_ptr += entry_size;
2250 uentry_ptr += uentry_size;
2251 }
2252 }
2253
2254 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2255 struct qeth_reply *reply, unsigned long data)
2256 {
2257 struct qeth_ipa_cmd *cmd;
2258 struct qeth_arp_query_data *qdata;
2259 struct qeth_arp_query_info *qinfo;
2260 int entry_size;
2261 int uentry_size;
2262 int i;
2263
2264 QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2265
2266 qinfo = (struct qeth_arp_query_info *) reply->param;
2267 cmd = (struct qeth_ipa_cmd *) data;
2268 if (cmd->hdr.return_code) {
2269 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2270 return 0;
2271 }
2272 if (cmd->data.setassparms.hdr.return_code) {
2273 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2274 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2275 return 0;
2276 }
2277 qdata = &cmd->data.setassparms.data.query_arp;
2278 switch (qdata->reply_bits) {
2279 case 5:
2280 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2281 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2282 uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2283 break;
2284 case 7:
2285 /* fall through to default */
2286 default:
2287 /* tr is the same as eth -> entry7 */
2288 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2289 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2290 uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2291 break;
2292 }
2293 /* check if there is enough room in userspace */
2294 if ((qinfo->udata_len - qinfo->udata_offset) <
2295 qdata->no_entries * uentry_size){
2296 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2297 cmd->hdr.return_code = -ENOMEM;
2298 goto out_error;
2299 }
2300 QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2301 cmd->data.setassparms.hdr.number_of_replies);
2302 QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2303 QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2304
2305 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2306 /* strip off "media specific information" */
2307 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2308 uentry_size);
2309 } else
2310 /*copy entries to user buffer*/
2311 memcpy(qinfo->udata + qinfo->udata_offset,
2312 (char *)&qdata->data, qdata->no_entries*uentry_size);
2313
2314 qinfo->no_entries += qdata->no_entries;
2315 qinfo->udata_offset += (qdata->no_entries*uentry_size);
2316 /* check if all replies received ... */
2317 if (cmd->data.setassparms.hdr.seq_no <
2318 cmd->data.setassparms.hdr.number_of_replies)
2319 return 1;
2320 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2321 /* keep STRIP_ENTRIES flag so the user program can distinguish
2322 * stripped entries from normal ones */
2323 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2324 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2325 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2326 return 0;
2327 out_error:
2328 i = 0;
2329 memcpy(qinfo->udata, &i, 4);
2330 return 0;
2331 }
2332
2333 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2334 struct qeth_cmd_buffer *iob, int len,
2335 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2336 unsigned long),
2337 void *reply_param)
2338 {
2339 QETH_DBF_TEXT(TRACE, 4, "sendarp");
2340
2341 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2342 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2343 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2344 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2345 reply_cb, reply_param);
2346 }
2347
2348 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2349 {
2350 struct qeth_cmd_buffer *iob;
2351 struct qeth_arp_query_info qinfo = {0, };
2352 int tmp;
2353 int rc;
2354
2355 QETH_DBF_TEXT(TRACE, 3, "arpquery");
2356
2357 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2358 IPA_ARP_PROCESSING)) {
2359 return -EOPNOTSUPP;
2360 }
2361 /* get size of userspace buffer and mask_bits -> 6 bytes */
2362 if (copy_from_user(&qinfo, udata, 6))
2363 return -EFAULT;
2364 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2365 if (!qinfo.udata)
2366 return -ENOMEM;
2367 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2368 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2369 IPA_CMD_ASS_ARP_QUERY_INFO,
2370 sizeof(int), QETH_PROT_IPV4);
2371
2372 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2373 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2374 qeth_l3_arp_query_cb, (void *)&qinfo);
2375 if (rc) {
2376 tmp = rc;
2377 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2378 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2379 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2380 if (copy_to_user(udata, qinfo.udata, 4))
2381 rc = -EFAULT;
2382 } else {
2383 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2384 rc = -EFAULT;
2385 }
2386 kfree(qinfo.udata);
2387 return rc;
2388 }
2389
2390 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2391 struct qeth_arp_cache_entry *entry)
2392 {
2393 struct qeth_cmd_buffer *iob;
2394 char buf[16];
2395 int tmp;
2396 int rc;
2397
2398 QETH_DBF_TEXT(TRACE, 3, "arpadent");
2399
2400 /*
2401 * currently GuestLAN only supports the ARP assist function
2402 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2403 * thus we say EOPNOTSUPP for this ARP function
2404 */
2405 if (card->info.guestlan)
2406 return -EOPNOTSUPP;
2407 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2408 return -EOPNOTSUPP;
2409 }
2410
2411 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2412 IPA_CMD_ASS_ARP_ADD_ENTRY,
2413 sizeof(struct qeth_arp_cache_entry),
2414 QETH_PROT_IPV4);
2415 rc = qeth_l3_send_setassparms(card, iob,
2416 sizeof(struct qeth_arp_cache_entry),
2417 (unsigned long) entry,
2418 qeth_l3_default_setassparms_cb, NULL);
2419 if (rc) {
2420 tmp = rc;
2421 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2422 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2423 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2424 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2425 }
2426 return rc;
2427 }
2428
2429 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2430 struct qeth_arp_cache_entry *entry)
2431 {
2432 struct qeth_cmd_buffer *iob;
2433 char buf[16] = {0, };
2434 int tmp;
2435 int rc;
2436
2437 QETH_DBF_TEXT(TRACE, 3, "arprment");
2438
2439 /*
2440 * currently GuestLAN only supports the ARP assist function
2441 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2442 * thus we say EOPNOTSUPP for this ARP function
2443 */
2444 if (card->info.guestlan)
2445 return -EOPNOTSUPP;
2446 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2447 return -EOPNOTSUPP;
2448 }
2449 memcpy(buf, entry, 12);
2450 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2451 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2452 12,
2453 QETH_PROT_IPV4);
2454 rc = qeth_l3_send_setassparms(card, iob,
2455 12, (unsigned long)buf,
2456 qeth_l3_default_setassparms_cb, NULL);
2457 if (rc) {
2458 tmp = rc;
2459 memset(buf, 0, 16);
2460 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2461 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2462 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2463 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2464 }
2465 return rc;
2466 }
2467
2468 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2469 {
2470 int rc;
2471 int tmp;
2472
2473 QETH_DBF_TEXT(TRACE, 3, "arpflush");
2474
2475 /*
2476 * currently GuestLAN only supports the ARP assist function
2477 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2478 * thus we say EOPNOTSUPP for this ARP function
2479 */
2480 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2481 return -EOPNOTSUPP;
2482 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2483 return -EOPNOTSUPP;
2484 }
2485 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2486 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2487 if (rc) {
2488 tmp = rc;
2489 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2490 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2491 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2492 }
2493 return rc;
2494 }
2495
2496 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2497 {
2498 struct qeth_card *card = dev->ml_priv;
2499 struct qeth_arp_cache_entry arp_entry;
2500 struct mii_ioctl_data *mii_data;
2501 int rc = 0;
2502
2503 if (!card)
2504 return -ENODEV;
2505
2506 if ((card->state != CARD_STATE_UP) &&
2507 (card->state != CARD_STATE_SOFTSETUP))
2508 return -ENODEV;
2509
2510 switch (cmd) {
2511 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2512 if (!capable(CAP_NET_ADMIN)) {
2513 rc = -EPERM;
2514 break;
2515 }
2516 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2517 break;
2518 case SIOC_QETH_ARP_QUERY_INFO:
2519 if (!capable(CAP_NET_ADMIN)) {
2520 rc = -EPERM;
2521 break;
2522 }
2523 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2524 break;
2525 case SIOC_QETH_ARP_ADD_ENTRY:
2526 if (!capable(CAP_NET_ADMIN)) {
2527 rc = -EPERM;
2528 break;
2529 }
2530 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2531 sizeof(struct qeth_arp_cache_entry)))
2532 rc = -EFAULT;
2533 else
2534 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2535 break;
2536 case SIOC_QETH_ARP_REMOVE_ENTRY:
2537 if (!capable(CAP_NET_ADMIN)) {
2538 rc = -EPERM;
2539 break;
2540 }
2541 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2542 sizeof(struct qeth_arp_cache_entry)))
2543 rc = -EFAULT;
2544 else
2545 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2546 break;
2547 case SIOC_QETH_ARP_FLUSH_CACHE:
2548 if (!capable(CAP_NET_ADMIN)) {
2549 rc = -EPERM;
2550 break;
2551 }
2552 rc = qeth_l3_arp_flush_cache(card);
2553 break;
2554 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2555 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2556 break;
2557 case SIOC_QETH_GET_CARD_TYPE:
2558 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2559 !card->info.guestlan)
2560 return 1;
2561 return 0;
2562 break;
2563 case SIOCGMIIPHY:
2564 mii_data = if_mii(rq);
2565 mii_data->phy_id = 0;
2566 break;
2567 case SIOCGMIIREG:
2568 mii_data = if_mii(rq);
2569 if (mii_data->phy_id != 0)
2570 rc = -EINVAL;
2571 else
2572 mii_data->val_out = qeth_mdio_read(dev,
2573 mii_data->phy_id,
2574 mii_data->reg_num);
2575 break;
2576 default:
2577 rc = -EOPNOTSUPP;
2578 }
2579 if (rc)
2580 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2581 return rc;
2582 }
2583
2584 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2585 {
2586 int cast_type = RTN_UNSPEC;
2587
2588 if (skb_dst(skb) && skb_dst(skb)->neighbour) {
2589 cast_type = skb_dst(skb)->neighbour->type;
2590 if ((cast_type == RTN_BROADCAST) ||
2591 (cast_type == RTN_MULTICAST) ||
2592 (cast_type == RTN_ANYCAST))
2593 return cast_type;
2594 else
2595 return RTN_UNSPEC;
2596 }
2597 /* try something else */
2598 if (skb->protocol == ETH_P_IPV6)
2599 return (skb_network_header(skb)[24] == 0xff) ?
2600 RTN_MULTICAST : 0;
2601 else if (skb->protocol == ETH_P_IP)
2602 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2603 RTN_MULTICAST : 0;
2604 /* ... */
2605 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2606 return RTN_BROADCAST;
2607 else {
2608 u16 hdr_mac;
2609
2610 hdr_mac = *((u16 *)skb->data);
2611 /* tr multicast? */
2612 switch (card->info.link_type) {
2613 case QETH_LINK_TYPE_HSTR:
2614 case QETH_LINK_TYPE_LANE_TR:
2615 if ((hdr_mac == QETH_TR_MAC_NC) ||
2616 (hdr_mac == QETH_TR_MAC_C))
2617 return RTN_MULTICAST;
2618 break;
2619 /* eth or so multicast? */
2620 default:
2621 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2622 (hdr_mac == QETH_ETH_MAC_V6))
2623 return RTN_MULTICAST;
2624 }
2625 }
2626 return cast_type;
2627 }
2628
2629 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2630 struct sk_buff *skb, int ipv, int cast_type)
2631 {
2632 memset(hdr, 0, sizeof(struct qeth_hdr));
2633 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2634 hdr->hdr.l3.ext_flags = 0;
2635
2636 /*
2637 * before we're going to overwrite this location with next hop ip.
2638 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2639 */
2640 if (card->vlangrp && vlan_tx_tag_present(skb)) {
2641 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2642 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2643 else
2644 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2645 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2646 }
2647
2648 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2649 if (ipv == 4) {
2650 /* IPv4 */
2651 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2652 memset(hdr->hdr.l3.dest_addr, 0, 12);
2653 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2654 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2655 *((u32 *) skb_dst(skb)->neighbour->primary_key);
2656 } else {
2657 /* fill in destination address used in ip header */
2658 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2659 ip_hdr(skb)->daddr;
2660 }
2661 } else if (ipv == 6) {
2662 /* IPv6 */
2663 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2664 if (card->info.type == QETH_CARD_TYPE_IQD)
2665 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2666 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2667 memcpy(hdr->hdr.l3.dest_addr,
2668 skb_dst(skb)->neighbour->primary_key, 16);
2669 } else {
2670 /* fill in destination address used in ip header */
2671 memcpy(hdr->hdr.l3.dest_addr,
2672 &ipv6_hdr(skb)->daddr, 16);
2673 }
2674 } else {
2675 /* passthrough */
2676 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2677 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2678 sizeof(__u16), skb->dev->broadcast, 6)) {
2679 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2680 QETH_HDR_PASSTHRU;
2681 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2682 skb->dev->broadcast, 6)) {
2683 /* broadcast? */
2684 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2685 QETH_HDR_PASSTHRU;
2686 } else {
2687 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2688 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2689 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2690 }
2691 }
2692 }
2693
2694 static void qeth_tso_fill_header(struct qeth_card *card,
2695 struct qeth_hdr *qhdr, struct sk_buff *skb)
2696 {
2697 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2698 struct tcphdr *tcph = tcp_hdr(skb);
2699 struct iphdr *iph = ip_hdr(skb);
2700 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2701
2702 /*fix header to TSO values ...*/
2703 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2704 /*set values which are fix for the first approach ...*/
2705 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2706 hdr->ext.imb_hdr_no = 1;
2707 hdr->ext.hdr_type = 1;
2708 hdr->ext.hdr_version = 1;
2709 hdr->ext.hdr_len = 28;
2710 /*insert non-fix values */
2711 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2712 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2713 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2714 sizeof(struct qeth_hdr_tso));
2715 tcph->check = 0;
2716 if (skb->protocol == ETH_P_IPV6) {
2717 ip6h->payload_len = 0;
2718 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2719 0, IPPROTO_TCP, 0);
2720 } else {
2721 /*OSA want us to set these values ...*/
2722 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2723 0, IPPROTO_TCP, 0);
2724 iph->tot_len = 0;
2725 iph->check = 0;
2726 }
2727 }
2728
2729 static void qeth_tx_csum(struct sk_buff *skb)
2730 {
2731 __wsum csum;
2732 int offset;
2733
2734 skb_set_transport_header(skb, skb->csum_start - skb_headroom(skb));
2735 offset = skb->csum_start - skb_headroom(skb);
2736 BUG_ON(offset >= skb_headlen(skb));
2737 csum = skb_checksum(skb, offset, skb->len - offset, 0);
2738
2739 offset += skb->csum_offset;
2740 BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
2741 *(__sum16 *)(skb->data + offset) = csum_fold(csum);
2742 }
2743
2744 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2745 {
2746 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2747 tcp_hdr(skb)->doff * 4;
2748 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2749 int elements = PFN_UP(tcpd + tcpd_len) - PFN_DOWN(tcpd);
2750 elements += skb_shinfo(skb)->nr_frags;
2751 return elements;
2752 }
2753
2754 static inline int qeth_l3_tso_check(struct sk_buff *skb)
2755 {
2756 int len = ((unsigned long)tcp_hdr(skb) + tcp_hdr(skb)->doff * 4) -
2757 (unsigned long)skb->data;
2758 return (((unsigned long)skb->data & PAGE_MASK) !=
2759 (((unsigned long)skb->data + len) & PAGE_MASK));
2760 }
2761
2762 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2763 {
2764 int rc;
2765 u16 *tag;
2766 struct qeth_hdr *hdr = NULL;
2767 int elements_needed = 0;
2768 int elems;
2769 struct qeth_card *card = dev->ml_priv;
2770 struct sk_buff *new_skb = NULL;
2771 int ipv = qeth_get_ip_version(skb);
2772 int cast_type = qeth_l3_get_cast_type(card, skb);
2773 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2774 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2775 int tx_bytes = skb->len;
2776 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2777 int data_offset = -1;
2778 int nr_frags;
2779
2780 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2781 (skb->protocol != htons(ETH_P_IPV6)) &&
2782 (skb->protocol != htons(ETH_P_IP)))
2783 goto tx_drop;
2784
2785 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2786 card->stats.tx_carrier_errors++;
2787 goto tx_drop;
2788 }
2789
2790 if ((cast_type == RTN_BROADCAST) &&
2791 (card->info.broadcast_capable == 0))
2792 goto tx_drop;
2793
2794 if (card->options.performance_stats) {
2795 card->perf_stats.outbound_cnt++;
2796 card->perf_stats.outbound_start_time = qeth_get_micros();
2797 }
2798
2799 if (skb_is_gso(skb))
2800 large_send = card->options.large_send;
2801 else
2802 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2803 qeth_tx_csum(skb);
2804 if (card->options.performance_stats)
2805 card->perf_stats.tx_csum++;
2806 }
2807
2808 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2809 (skb_shinfo(skb)->nr_frags == 0)) {
2810 new_skb = skb;
2811 data_offset = ETH_HLEN;
2812 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2813 if (!hdr)
2814 goto tx_drop;
2815 elements_needed++;
2816 } else {
2817 /* create a clone with writeable headroom */
2818 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2819 + VLAN_HLEN);
2820 if (!new_skb)
2821 goto tx_drop;
2822 }
2823
2824 if (card->info.type == QETH_CARD_TYPE_IQD) {
2825 if (data_offset < 0)
2826 skb_pull(new_skb, ETH_HLEN);
2827 } else {
2828 if (new_skb->protocol == htons(ETH_P_IP)) {
2829 if (card->dev->type == ARPHRD_IEEE802_TR)
2830 skb_pull(new_skb, TR_HLEN);
2831 else
2832 skb_pull(new_skb, ETH_HLEN);
2833 }
2834
2835 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2836 vlan_tx_tag_present(new_skb)) {
2837 skb_push(new_skb, VLAN_HLEN);
2838 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2839 skb_copy_to_linear_data_offset(new_skb, 4,
2840 new_skb->data + 8, 4);
2841 skb_copy_to_linear_data_offset(new_skb, 8,
2842 new_skb->data + 12, 4);
2843 tag = (u16 *)(new_skb->data + 12);
2844 *tag = __constant_htons(ETH_P_8021Q);
2845 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2846 new_skb->vlan_tci = 0;
2847 }
2848 }
2849
2850 netif_stop_queue(dev);
2851
2852 /* fix hardware limitation: as long as we do not have sbal
2853 * chaining we can not send long frag lists
2854 */
2855 if (large_send == QETH_LARGE_SEND_TSO) {
2856 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2857 if (skb_linearize(new_skb))
2858 goto tx_drop;
2859 if (card->options.performance_stats)
2860 card->perf_stats.tx_lin++;
2861 }
2862 }
2863
2864 if ((large_send == QETH_LARGE_SEND_TSO) &&
2865 (cast_type == RTN_UNSPEC)) {
2866 hdr = (struct qeth_hdr *)skb_push(new_skb,
2867 sizeof(struct qeth_hdr_tso));
2868 if (qeth_l3_tso_check(new_skb))
2869 QETH_DBF_MESSAGE(2, "tso skb misaligned\n");
2870 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2871 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2872 qeth_tso_fill_header(card, hdr, new_skb);
2873 elements_needed++;
2874 } else {
2875 if (data_offset < 0) {
2876 hdr = (struct qeth_hdr *)skb_push(new_skb,
2877 sizeof(struct qeth_hdr));
2878 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2879 cast_type);
2880 } else {
2881 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2882 cast_type);
2883 hdr->hdr.l3.length = new_skb->len - data_offset;
2884 }
2885 }
2886
2887 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2888 elements_needed);
2889 if (!elems) {
2890 if (data_offset >= 0)
2891 kmem_cache_free(qeth_core_header_cache, hdr);
2892 goto tx_drop;
2893 }
2894 elements_needed += elems;
2895 nr_frags = skb_shinfo(new_skb)->nr_frags;
2896
2897 if (card->info.type != QETH_CARD_TYPE_IQD)
2898 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2899 elements_needed);
2900 else
2901 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2902 elements_needed, data_offset, 0);
2903
2904 if (!rc) {
2905 card->stats.tx_packets++;
2906 card->stats.tx_bytes += tx_bytes;
2907 if (new_skb != skb)
2908 dev_kfree_skb_any(skb);
2909 if (card->options.performance_stats) {
2910 if (large_send != QETH_LARGE_SEND_NO) {
2911 card->perf_stats.large_send_bytes += tx_bytes;
2912 card->perf_stats.large_send_cnt++;
2913 }
2914 if (nr_frags) {
2915 card->perf_stats.sg_skbs_sent++;
2916 /* nr_frags + skb->data */
2917 card->perf_stats.sg_frags_sent += nr_frags + 1;
2918 }
2919 }
2920 rc = NETDEV_TX_OK;
2921 } else {
2922 if (data_offset >= 0)
2923 kmem_cache_free(qeth_core_header_cache, hdr);
2924
2925 if (rc == -EBUSY) {
2926 if (new_skb != skb)
2927 dev_kfree_skb_any(new_skb);
2928 return NETDEV_TX_BUSY;
2929 } else
2930 goto tx_drop;
2931 }
2932
2933 netif_wake_queue(dev);
2934 if (card->options.performance_stats)
2935 card->perf_stats.outbound_time += qeth_get_micros() -
2936 card->perf_stats.outbound_start_time;
2937 return rc;
2938
2939 tx_drop:
2940 card->stats.tx_dropped++;
2941 card->stats.tx_errors++;
2942 if ((new_skb != skb) && new_skb)
2943 dev_kfree_skb_any(new_skb);
2944 dev_kfree_skb_any(skb);
2945 netif_wake_queue(dev);
2946 return NETDEV_TX_OK;
2947 }
2948
2949 static int qeth_l3_open(struct net_device *dev)
2950 {
2951 struct qeth_card *card = dev->ml_priv;
2952
2953 QETH_DBF_TEXT(TRACE, 4, "qethopen");
2954 if (card->state != CARD_STATE_SOFTSETUP)
2955 return -ENODEV;
2956 card->data.state = CH_STATE_UP;
2957 card->state = CARD_STATE_UP;
2958 netif_start_queue(dev);
2959
2960 if (!card->lan_online && netif_carrier_ok(dev))
2961 netif_carrier_off(dev);
2962 return 0;
2963 }
2964
2965 static int qeth_l3_stop(struct net_device *dev)
2966 {
2967 struct qeth_card *card = dev->ml_priv;
2968
2969 QETH_DBF_TEXT(TRACE, 4, "qethstop");
2970 netif_tx_disable(dev);
2971 if (card->state == CARD_STATE_UP)
2972 card->state = CARD_STATE_SOFTSETUP;
2973 return 0;
2974 }
2975
2976 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2977 {
2978 struct qeth_card *card = dev->ml_priv;
2979
2980 return (card->options.checksum_type == HW_CHECKSUMMING);
2981 }
2982
2983 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2984 {
2985 struct qeth_card *card = dev->ml_priv;
2986 enum qeth_checksum_types csum_type;
2987
2988 if (data)
2989 csum_type = HW_CHECKSUMMING;
2990 else
2991 csum_type = SW_CHECKSUMMING;
2992
2993 return qeth_l3_set_rx_csum(card, csum_type);
2994 }
2995
2996 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2997 {
2998 struct qeth_card *card = dev->ml_priv;
2999 int rc = 0;
3000
3001 if (data) {
3002 rc = qeth_l3_set_large_send(card, QETH_LARGE_SEND_TSO);
3003 } else {
3004 dev->features &= ~NETIF_F_TSO;
3005 card->options.large_send = QETH_LARGE_SEND_NO;
3006 }
3007 return rc;
3008 }
3009
3010 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3011 .get_link = ethtool_op_get_link,
3012 .get_tx_csum = ethtool_op_get_tx_csum,
3013 .set_tx_csum = ethtool_op_set_tx_hw_csum,
3014 .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
3015 .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
3016 .get_sg = ethtool_op_get_sg,
3017 .set_sg = ethtool_op_set_sg,
3018 .get_tso = ethtool_op_get_tso,
3019 .set_tso = qeth_l3_ethtool_set_tso,
3020 .get_strings = qeth_core_get_strings,
3021 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3022 .get_sset_count = qeth_core_get_sset_count,
3023 .get_drvinfo = qeth_core_get_drvinfo,
3024 .get_settings = qeth_core_ethtool_get_settings,
3025 };
3026
3027 /*
3028 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3029 * NOARP on the netdevice is no option because it also turns off neighbor
3030 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3031 * arp resolution but we want the hard header (packet socket will work
3032 * e.g. tcpdump)
3033 */
3034 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3035 {
3036 n->nud_state = NUD_NOARP;
3037 memcpy(n->ha, "FAKELL", 6);
3038 n->output = n->ops->connected_output;
3039 return 0;
3040 }
3041
3042 static int
3043 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3044 {
3045 if (np->tbl->family == AF_INET)
3046 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3047
3048 return 0;
3049 }
3050
3051 static const struct net_device_ops qeth_l3_netdev_ops = {
3052 .ndo_open = qeth_l3_open,
3053 .ndo_stop = qeth_l3_stop,
3054 .ndo_get_stats = qeth_get_stats,
3055 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3056 .ndo_validate_addr = eth_validate_addr,
3057 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3058 .ndo_do_ioctl = qeth_l3_do_ioctl,
3059 .ndo_change_mtu = qeth_change_mtu,
3060 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3061 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3062 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3063 .ndo_tx_timeout = qeth_tx_timeout,
3064 };
3065
3066 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3067 .ndo_open = qeth_l3_open,
3068 .ndo_stop = qeth_l3_stop,
3069 .ndo_get_stats = qeth_get_stats,
3070 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3071 .ndo_validate_addr = eth_validate_addr,
3072 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3073 .ndo_do_ioctl = qeth_l3_do_ioctl,
3074 .ndo_change_mtu = qeth_change_mtu,
3075 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3076 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3077 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3078 .ndo_tx_timeout = qeth_tx_timeout,
3079 .ndo_neigh_setup = qeth_l3_neigh_setup,
3080 };
3081
3082 static int qeth_l3_setup_netdev(struct qeth_card *card)
3083 {
3084 if (card->info.type == QETH_CARD_TYPE_OSAE) {
3085 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3086 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3087 #ifdef CONFIG_TR
3088 card->dev = alloc_trdev(0);
3089 #endif
3090 if (!card->dev)
3091 return -ENODEV;
3092 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3093 } else {
3094 card->dev = alloc_etherdev(0);
3095 if (!card->dev)
3096 return -ENODEV;
3097 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3098
3099 /*IPv6 address autoconfiguration stuff*/
3100 qeth_l3_get_unique_id(card);
3101 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3102 card->dev->dev_id = card->info.unique_id &
3103 0xffff;
3104 }
3105 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3106 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3107 if (!card->dev)
3108 return -ENODEV;
3109 card->dev->flags |= IFF_NOARP;
3110 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3111 qeth_l3_iqd_read_initial_mac(card);
3112 } else
3113 return -ENODEV;
3114
3115 card->dev->ml_priv = card;
3116 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3117 card->dev->mtu = card->info.initial_mtu;
3118 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3119 card->dev->features |= NETIF_F_HW_VLAN_TX |
3120 NETIF_F_HW_VLAN_RX |
3121 NETIF_F_HW_VLAN_FILTER;
3122 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3123 card->dev->gso_max_size = 15 * PAGE_SIZE;
3124
3125 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3126 return register_netdev(card->dev);
3127 }
3128
3129 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
3130 unsigned int qdio_err, unsigned int queue, int first_element,
3131 int count, unsigned long card_ptr)
3132 {
3133 struct net_device *net_dev;
3134 struct qeth_card *card;
3135 struct qeth_qdio_buffer *buffer;
3136 int index;
3137 int i;
3138
3139 card = (struct qeth_card *) card_ptr;
3140 net_dev = card->dev;
3141 if (card->options.performance_stats) {
3142 card->perf_stats.inbound_cnt++;
3143 card->perf_stats.inbound_start_time = qeth_get_micros();
3144 }
3145 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3146 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
3147 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
3148 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
3149 first_element, count);
3150 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
3151 qeth_schedule_recovery(card);
3152 return;
3153 }
3154 for (i = first_element; i < (first_element + count); ++i) {
3155 index = i % QDIO_MAX_BUFFERS_PER_Q;
3156 buffer = &card->qdio.in_q->bufs[index];
3157 if (!(qdio_err &&
3158 qeth_check_qdio_errors(buffer->buffer,
3159 qdio_err, "qinerr")))
3160 qeth_l3_process_inbound_buffer(card, buffer, index);
3161 /* clear buffer and give back to hardware */
3162 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3163 qeth_queue_input_buffer(card, index);
3164 }
3165 if (card->options.performance_stats)
3166 card->perf_stats.inbound_time += qeth_get_micros() -
3167 card->perf_stats.inbound_start_time;
3168 }
3169
3170 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3171 {
3172 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3173
3174 qeth_l3_create_device_attributes(&gdev->dev);
3175 card->options.layer2 = 0;
3176 card->discipline.input_handler = (qdio_handler_t *)
3177 qeth_l3_qdio_input_handler;
3178 card->discipline.output_handler = (qdio_handler_t *)
3179 qeth_qdio_output_handler;
3180 card->discipline.recover = qeth_l3_recover;
3181 return 0;
3182 }
3183
3184 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3185 {
3186 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3187
3188 qeth_set_allowed_threads(card, 0, 1);
3189 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3190
3191 if (cgdev->state == CCWGROUP_ONLINE) {
3192 card->use_hard_stop = 1;
3193 qeth_l3_set_offline(cgdev);
3194 }
3195
3196 if (card->dev) {
3197 unregister_netdev(card->dev);
3198 card->dev = NULL;
3199 }
3200
3201 qeth_l3_remove_device_attributes(&cgdev->dev);
3202 qeth_l3_clear_ip_list(card, 0, 0);
3203 qeth_l3_clear_ipato_list(card);
3204 return;
3205 }
3206
3207 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3208 {
3209 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3210 int rc = 0;
3211 enum qeth_card_states recover_flag;
3212
3213 BUG_ON(!card);
3214 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3215 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3216
3217 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3218
3219 recover_flag = card->state;
3220 rc = qeth_core_hardsetup_card(card);
3221 if (rc) {
3222 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3223 rc = -ENODEV;
3224 goto out_remove;
3225 }
3226
3227 qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3228
3229 if (!card->dev && qeth_l3_setup_netdev(card)) {
3230 rc = -ENODEV;
3231 goto out_remove;
3232 }
3233
3234 card->state = CARD_STATE_HARDSETUP;
3235 qeth_print_status_message(card);
3236
3237 /* softsetup */
3238 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3239
3240 rc = qeth_send_startlan(card);
3241 if (rc) {
3242 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3243 if (rc == 0xe080) {
3244 dev_warn(&card->gdev->dev,
3245 "The LAN is offline\n");
3246 card->lan_online = 0;
3247 return 0;
3248 }
3249 rc = -ENODEV;
3250 goto out_remove;
3251 } else
3252 card->lan_online = 1;
3253 qeth_l3_set_large_send(card, card->options.large_send);
3254
3255 rc = qeth_l3_setadapter_parms(card);
3256 if (rc)
3257 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3258 rc = qeth_l3_start_ipassists(card);
3259 if (rc)
3260 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3261 rc = qeth_l3_setrouting_v4(card);
3262 if (rc)
3263 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3264 rc = qeth_l3_setrouting_v6(card);
3265 if (rc)
3266 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3267 netif_tx_disable(card->dev);
3268
3269 rc = qeth_init_qdio_queues(card);
3270 if (rc) {
3271 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3272 rc = -ENODEV;
3273 goto out_remove;
3274 }
3275 card->state = CARD_STATE_SOFTSETUP;
3276 netif_carrier_on(card->dev);
3277
3278 qeth_set_allowed_threads(card, 0xffffffff, 0);
3279 qeth_l3_set_ip_addr_list(card);
3280 if (recover_flag == CARD_STATE_RECOVER) {
3281 if (recovery_mode)
3282 qeth_l3_open(card->dev);
3283 else {
3284 rtnl_lock();
3285 dev_open(card->dev);
3286 rtnl_unlock();
3287 }
3288 qeth_l3_set_multicast_list(card->dev);
3289 }
3290 /* let user_space know that device is online */
3291 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3292 return 0;
3293 out_remove:
3294 card->use_hard_stop = 1;
3295 qeth_l3_stop_card(card, 0);
3296 ccw_device_set_offline(CARD_DDEV(card));
3297 ccw_device_set_offline(CARD_WDEV(card));
3298 ccw_device_set_offline(CARD_RDEV(card));
3299 if (recover_flag == CARD_STATE_RECOVER)
3300 card->state = CARD_STATE_RECOVER;
3301 else
3302 card->state = CARD_STATE_DOWN;
3303 return rc;
3304 }
3305
3306 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3307 {
3308 return __qeth_l3_set_online(gdev, 0);
3309 }
3310
3311 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3312 int recovery_mode)
3313 {
3314 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3315 int rc = 0, rc2 = 0, rc3 = 0;
3316 enum qeth_card_states recover_flag;
3317
3318 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3319 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3320
3321 if (card->dev && netif_carrier_ok(card->dev))
3322 netif_carrier_off(card->dev);
3323 recover_flag = card->state;
3324 qeth_l3_stop_card(card, recovery_mode);
3325 rc = ccw_device_set_offline(CARD_DDEV(card));
3326 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3327 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3328 if (!rc)
3329 rc = (rc2) ? rc2 : rc3;
3330 if (rc)
3331 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3332 if (recover_flag == CARD_STATE_UP)
3333 card->state = CARD_STATE_RECOVER;
3334 /* let user_space know that device is offline */
3335 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3336 return 0;
3337 }
3338
3339 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3340 {
3341 return __qeth_l3_set_offline(cgdev, 0);
3342 }
3343
3344 static int qeth_l3_recover(void *ptr)
3345 {
3346 struct qeth_card *card;
3347 int rc = 0;
3348
3349 card = (struct qeth_card *) ptr;
3350 QETH_DBF_TEXT(TRACE, 2, "recover1");
3351 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3352 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3353 return 0;
3354 QETH_DBF_TEXT(TRACE, 2, "recover2");
3355 dev_warn(&card->gdev->dev,
3356 "A recovery process has been started for the device\n");
3357 card->use_hard_stop = 1;
3358 __qeth_l3_set_offline(card->gdev, 1);
3359 rc = __qeth_l3_set_online(card->gdev, 1);
3360 /* don't run another scheduled recovery */
3361 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3362 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3363 if (!rc)
3364 dev_info(&card->gdev->dev,
3365 "Device successfully recovered!\n");
3366 else {
3367 rtnl_lock();
3368 dev_close(card->dev);
3369 rtnl_unlock();
3370 dev_warn(&card->gdev->dev, "The qeth device driver "
3371 "failed to recover an error on the device\n");
3372 }
3373 return 0;
3374 }
3375
3376 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3377 {
3378 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3379 qeth_l3_clear_ip_list(card, 0, 0);
3380 qeth_qdio_clear_card(card, 0);
3381 qeth_clear_qdio_buffers(card);
3382 }
3383
3384 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3385 {
3386 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3387
3388 if (card->dev)
3389 netif_device_detach(card->dev);
3390 qeth_set_allowed_threads(card, 0, 1);
3391 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3392 if (gdev->state == CCWGROUP_OFFLINE)
3393 return 0;
3394 if (card->state == CARD_STATE_UP) {
3395 card->use_hard_stop = 1;
3396 __qeth_l3_set_offline(card->gdev, 1);
3397 } else
3398 __qeth_l3_set_offline(card->gdev, 0);
3399 return 0;
3400 }
3401
3402 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3403 {
3404 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3405 int rc = 0;
3406
3407 if (gdev->state == CCWGROUP_OFFLINE)
3408 goto out;
3409
3410 if (card->state == CARD_STATE_RECOVER) {
3411 rc = __qeth_l3_set_online(card->gdev, 1);
3412 if (rc) {
3413 if (card->dev) {
3414 rtnl_lock();
3415 dev_close(card->dev);
3416 rtnl_unlock();
3417 }
3418 }
3419 } else
3420 rc = __qeth_l3_set_online(card->gdev, 0);
3421 out:
3422 qeth_set_allowed_threads(card, 0xffffffff, 0);
3423 if (card->dev)
3424 netif_device_attach(card->dev);
3425 if (rc)
3426 dev_warn(&card->gdev->dev, "The qeth device driver "
3427 "failed to recover an error on the device\n");
3428 return rc;
3429 }
3430
3431 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3432 .probe = qeth_l3_probe_device,
3433 .remove = qeth_l3_remove_device,
3434 .set_online = qeth_l3_set_online,
3435 .set_offline = qeth_l3_set_offline,
3436 .shutdown = qeth_l3_shutdown,
3437 .freeze = qeth_l3_pm_suspend,
3438 .thaw = qeth_l3_pm_resume,
3439 .restore = qeth_l3_pm_resume,
3440 };
3441 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3442
3443 static int qeth_l3_ip_event(struct notifier_block *this,
3444 unsigned long event, void *ptr)
3445 {
3446 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3447 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3448 struct qeth_ipaddr *addr;
3449 struct qeth_card *card;
3450
3451 if (dev_net(dev) != &init_net)
3452 return NOTIFY_DONE;
3453
3454 QETH_DBF_TEXT(TRACE, 3, "ipevent");
3455 card = qeth_l3_get_card_from_dev(dev);
3456 if (!card)
3457 return NOTIFY_DONE;
3458
3459 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3460 if (addr != NULL) {
3461 addr->u.a4.addr = ifa->ifa_address;
3462 addr->u.a4.mask = ifa->ifa_mask;
3463 addr->type = QETH_IP_TYPE_NORMAL;
3464 } else
3465 goto out;
3466
3467 switch (event) {
3468 case NETDEV_UP:
3469 if (!qeth_l3_add_ip(card, addr))
3470 kfree(addr);
3471 break;
3472 case NETDEV_DOWN:
3473 if (!qeth_l3_delete_ip(card, addr))
3474 kfree(addr);
3475 break;
3476 default:
3477 break;
3478 }
3479 qeth_l3_set_ip_addr_list(card);
3480 out:
3481 return NOTIFY_DONE;
3482 }
3483
3484 static struct notifier_block qeth_l3_ip_notifier = {
3485 qeth_l3_ip_event,
3486 NULL,
3487 };
3488
3489 #ifdef CONFIG_QETH_IPV6
3490 /**
3491 * IPv6 event handler
3492 */
3493 static int qeth_l3_ip6_event(struct notifier_block *this,
3494 unsigned long event, void *ptr)
3495 {
3496 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3497 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3498 struct qeth_ipaddr *addr;
3499 struct qeth_card *card;
3500
3501 QETH_DBF_TEXT(TRACE, 3, "ip6event");
3502
3503 card = qeth_l3_get_card_from_dev(dev);
3504 if (!card)
3505 return NOTIFY_DONE;
3506 if (!qeth_is_supported(card, IPA_IPV6))
3507 return NOTIFY_DONE;
3508
3509 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3510 if (addr != NULL) {
3511 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3512 addr->u.a6.pfxlen = ifa->prefix_len;
3513 addr->type = QETH_IP_TYPE_NORMAL;
3514 } else
3515 goto out;
3516
3517 switch (event) {
3518 case NETDEV_UP:
3519 if (!qeth_l3_add_ip(card, addr))
3520 kfree(addr);
3521 break;
3522 case NETDEV_DOWN:
3523 if (!qeth_l3_delete_ip(card, addr))
3524 kfree(addr);
3525 break;
3526 default:
3527 break;
3528 }
3529 qeth_l3_set_ip_addr_list(card);
3530 out:
3531 return NOTIFY_DONE;
3532 }
3533
3534 static struct notifier_block qeth_l3_ip6_notifier = {
3535 qeth_l3_ip6_event,
3536 NULL,
3537 };
3538 #endif
3539
3540 static int qeth_l3_register_notifiers(void)
3541 {
3542 int rc;
3543
3544 QETH_DBF_TEXT(TRACE, 5, "regnotif");
3545 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3546 if (rc)
3547 return rc;
3548 #ifdef CONFIG_QETH_IPV6
3549 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3550 if (rc) {
3551 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3552 return rc;
3553 }
3554 #else
3555 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3556 #endif
3557 return 0;
3558 }
3559
3560 static void qeth_l3_unregister_notifiers(void)
3561 {
3562
3563 QETH_DBF_TEXT(TRACE, 5, "unregnot");
3564 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3565 #ifdef CONFIG_QETH_IPV6
3566 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3567 #endif /* QETH_IPV6 */
3568 }
3569
3570 static int __init qeth_l3_init(void)
3571 {
3572 int rc = 0;
3573
3574 pr_info("register layer 3 discipline\n");
3575 rc = qeth_l3_register_notifiers();
3576 return rc;
3577 }
3578
3579 static void __exit qeth_l3_exit(void)
3580 {
3581 qeth_l3_unregister_notifiers();
3582 pr_info("unregister layer 3 discipline\n");
3583 }
3584
3585 module_init(qeth_l3_init);
3586 module_exit(qeth_l3_exit);
3587 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3588 MODULE_DESCRIPTION("qeth layer 3 discipline");
3589 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree