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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / net / qeth_l3_main.c
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/bitops.h>
15 #include <linux/string.h>
16 #include <linux/errno.h>
17 #include <linux/kernel.h>
18 #include <linux/etherdevice.h>
19 #include <linux/mii.h>
20 #include <linux/ip.h>
21 #include <linux/ipv6.h>
22 #include <linux/inetdevice.h>
23 #include <linux/igmp.h>
24 #include <linux/slab.h>
25 #include <linux/if_vlan.h>
26
27 #include <net/ip.h>
28 #include <net/arp.h>
29 #include <net/route.h>
30 #include <net/ip6_fib.h>
31 #include <net/ip6_checksum.h>
32 #include <net/iucv/af_iucv.h>
33
34 #include "qeth_l3.h"
35
36
37 static int qeth_l3_set_offline(struct ccwgroup_device *);
38 static int qeth_l3_recover(void *);
39 static int qeth_l3_stop(struct net_device *);
40 static void qeth_l3_set_multicast_list(struct net_device *);
41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
42 static int qeth_l3_register_addr_entry(struct qeth_card *,
43 struct qeth_ipaddr *);
44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
48
49 static int qeth_l3_isxdigit(char *buf)
50 {
51 while (*buf) {
52 if (!isxdigit(*buf++))
53 return 0;
54 }
55 return 1;
56 }
57
58 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
59 {
60 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
61 }
62
63 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
64 {
65 int count = 0, rc = 0;
66 int in[4];
67 char c;
68
69 rc = sscanf(buf, "%u.%u.%u.%u%c",
70 &in[0], &in[1], &in[2], &in[3], &c);
71 if (rc != 4 && (rc != 5 || c != '\n'))
72 return -EINVAL;
73 for (count = 0; count < 4; count++) {
74 if (in[count] > 255)
75 return -EINVAL;
76 addr[count] = in[count];
77 }
78 return 0;
79 }
80
81 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
82 {
83 sprintf(buf, "%pI6", addr);
84 }
85
86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
87 {
88 const char *end, *end_tmp, *start;
89 __u16 *in;
90 char num[5];
91 int num2, cnt, out, found, save_cnt;
92 unsigned short in_tmp[8] = {0, };
93
94 cnt = out = found = save_cnt = num2 = 0;
95 end = start = buf;
96 in = (__u16 *) addr;
97 memset(in, 0, 16);
98 while (*end) {
99 end = strchr(start, ':');
100 if (end == NULL) {
101 end = buf + strlen(buf);
102 end_tmp = strchr(start, '\n');
103 if (end_tmp != NULL)
104 end = end_tmp;
105 out = 1;
106 }
107 if ((end - start)) {
108 memset(num, 0, 5);
109 if ((end - start) > 4)
110 return -EINVAL;
111 memcpy(num, start, end - start);
112 if (!qeth_l3_isxdigit(num))
113 return -EINVAL;
114 sscanf(start, "%x", &num2);
115 if (found)
116 in_tmp[save_cnt++] = num2;
117 else
118 in[cnt++] = num2;
119 if (out)
120 break;
121 } else {
122 if (found)
123 return -EINVAL;
124 found = 1;
125 }
126 start = ++end;
127 }
128 if (cnt + save_cnt > 8)
129 return -EINVAL;
130 cnt = 7;
131 while (save_cnt)
132 in[cnt--] = in_tmp[--save_cnt];
133 return 0;
134 }
135
136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
137 char *buf)
138 {
139 if (proto == QETH_PROT_IPV4)
140 qeth_l3_ipaddr4_to_string(addr, buf);
141 else if (proto == QETH_PROT_IPV6)
142 qeth_l3_ipaddr6_to_string(addr, buf);
143 }
144
145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
146 __u8 *addr)
147 {
148 if (proto == QETH_PROT_IPV4)
149 return qeth_l3_string_to_ipaddr4(buf, addr);
150 else if (proto == QETH_PROT_IPV6)
151 return qeth_l3_string_to_ipaddr6(buf, addr);
152 else
153 return -EINVAL;
154 }
155
156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
157 {
158 int i, j;
159 u8 octet;
160
161 for (i = 0; i < len; ++i) {
162 octet = addr[i];
163 for (j = 7; j >= 0; --j) {
164 bits[i*8 + j] = octet & 1;
165 octet >>= 1;
166 }
167 }
168 }
169
170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
171 struct qeth_ipaddr *addr)
172 {
173 struct qeth_ipato_entry *ipatoe;
174 u8 addr_bits[128] = {0, };
175 u8 ipatoe_bits[128] = {0, };
176 int rc = 0;
177
178 if (!card->ipato.enabled)
179 return 0;
180
181 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
182 (addr->proto == QETH_PROT_IPV4)? 4:16);
183 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
184 if (addr->proto != ipatoe->proto)
185 continue;
186 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
187 (ipatoe->proto == QETH_PROT_IPV4) ?
188 4 : 16);
189 if (addr->proto == QETH_PROT_IPV4)
190 rc = !memcmp(addr_bits, ipatoe_bits,
191 min(32, ipatoe->mask_bits));
192 else
193 rc = !memcmp(addr_bits, ipatoe_bits,
194 min(128, ipatoe->mask_bits));
195 if (rc)
196 break;
197 }
198 /* invert? */
199 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
200 rc = !rc;
201 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
202 rc = !rc;
203
204 return rc;
205 }
206
207 /*
208 * Add IP to be added to todo list. If there is already an "add todo"
209 * in this list we just incremenent the reference count.
210 * Returns 0 if we just incremented reference count.
211 */
212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
213 struct qeth_ipaddr *addr, int add)
214 {
215 struct qeth_ipaddr *tmp, *t;
216 int found = 0;
217
218 if (card->options.sniffer)
219 return 0;
220 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
221 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
222 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
223 return 0;
224 if ((tmp->proto == QETH_PROT_IPV4) &&
225 (addr->proto == QETH_PROT_IPV4) &&
226 (tmp->type == addr->type) &&
227 (tmp->is_multicast == addr->is_multicast) &&
228 (tmp->u.a4.addr == addr->u.a4.addr) &&
229 (tmp->u.a4.mask == addr->u.a4.mask)) {
230 found = 1;
231 break;
232 }
233 if ((tmp->proto == QETH_PROT_IPV6) &&
234 (addr->proto == QETH_PROT_IPV6) &&
235 (tmp->type == addr->type) &&
236 (tmp->is_multicast == addr->is_multicast) &&
237 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
238 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
239 sizeof(struct in6_addr)) == 0)) {
240 found = 1;
241 break;
242 }
243 }
244 if (found) {
245 if (addr->users != 0)
246 tmp->users += addr->users;
247 else
248 tmp->users += add ? 1 : -1;
249 if (tmp->users == 0) {
250 list_del(&tmp->entry);
251 kfree(tmp);
252 }
253 return 0;
254 } else {
255 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
256 list_add(&addr->entry, card->ip_tbd_list);
257 else {
258 if (addr->users == 0)
259 addr->users += add ? 1 : -1;
260 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
261 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
262 QETH_CARD_TEXT(card, 2, "tkovaddr");
263 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
264 }
265 list_add_tail(&addr->entry, card->ip_tbd_list);
266 }
267 return 1;
268 }
269 }
270
271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
272 {
273 unsigned long flags;
274 int rc = 0;
275
276 QETH_CARD_TEXT(card, 4, "delip");
277
278 if (addr->proto == QETH_PROT_IPV4)
279 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
280 else {
281 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
282 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
283 }
284 spin_lock_irqsave(&card->ip_lock, flags);
285 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
286 spin_unlock_irqrestore(&card->ip_lock, flags);
287 return rc;
288 }
289
290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
291 {
292 unsigned long flags;
293 int rc = 0;
294
295 QETH_CARD_TEXT(card, 4, "addip");
296 if (addr->proto == QETH_PROT_IPV4)
297 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
298 else {
299 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
300 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
301 }
302 spin_lock_irqsave(&card->ip_lock, flags);
303 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
304 spin_unlock_irqrestore(&card->ip_lock, flags);
305 return rc;
306 }
307
308
309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
310 enum qeth_prot_versions prot)
311 {
312 struct qeth_ipaddr *addr;
313
314 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
315 if (addr == NULL) {
316 return NULL;
317 }
318 addr->type = QETH_IP_TYPE_NORMAL;
319 addr->proto = prot;
320 return addr;
321 }
322
323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
324 {
325 struct qeth_ipaddr *iptodo;
326 unsigned long flags;
327
328 QETH_CARD_TEXT(card, 4, "delmc");
329 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
330 if (!iptodo) {
331 QETH_CARD_TEXT(card, 2, "dmcnomem");
332 return;
333 }
334 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
335 spin_lock_irqsave(&card->ip_lock, flags);
336 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
337 kfree(iptodo);
338 spin_unlock_irqrestore(&card->ip_lock, flags);
339 }
340
341 /*
342 * Add/remove address to/from card's ip list, i.e. try to add or remove
343 * reference to/from an IP address that is already registered on the card.
344 * Returns:
345 * 0 address was on card and its reference count has been adjusted,
346 * but is still > 0, so nothing has to be done
347 * also returns 0 if card was not on card and the todo was to delete
348 * the address -> there is also nothing to be done
349 * 1 address was not on card and the todo is to add it to the card's ip
350 * list
351 * -1 address was on card and its reference count has been decremented
352 * to <= 0 by the todo -> address must be removed from card
353 */
354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
355 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
356 {
357 struct qeth_ipaddr *addr;
358 int found = 0;
359
360 list_for_each_entry(addr, &card->ip_list, entry) {
361 if ((addr->proto == QETH_PROT_IPV4) &&
362 (todo->proto == QETH_PROT_IPV4) &&
363 (addr->type == todo->type) &&
364 (addr->u.a4.addr == todo->u.a4.addr) &&
365 (addr->u.a4.mask == todo->u.a4.mask)) {
366 found = 1;
367 break;
368 }
369 if ((addr->proto == QETH_PROT_IPV6) &&
370 (todo->proto == QETH_PROT_IPV6) &&
371 (addr->type == todo->type) &&
372 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
373 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
374 sizeof(struct in6_addr)) == 0)) {
375 found = 1;
376 break;
377 }
378 }
379 if (found) {
380 addr->users += todo->users;
381 if (addr->users <= 0) {
382 *__addr = addr;
383 return -1;
384 } else {
385 /* for VIPA and RXIP limit refcount to 1 */
386 if (addr->type != QETH_IP_TYPE_NORMAL)
387 addr->users = 1;
388 return 0;
389 }
390 }
391 if (todo->users > 0) {
392 /* for VIPA and RXIP limit refcount to 1 */
393 if (todo->type != QETH_IP_TYPE_NORMAL)
394 todo->users = 1;
395 return 1;
396 } else
397 return 0;
398 }
399
400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
401 unsigned long *flags)
402 {
403 struct list_head fail_list;
404 struct qeth_ipaddr *addr, *tmp;
405 int rc;
406
407 INIT_LIST_HEAD(&fail_list);
408 again:
409 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
410 if (addr->is_multicast) {
411 list_del(&addr->entry);
412 spin_unlock_irqrestore(&card->ip_lock, *flags);
413 rc = qeth_l3_deregister_addr_entry(card, addr);
414 spin_lock_irqsave(&card->ip_lock, *flags);
415 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
416 kfree(addr);
417 else
418 list_add_tail(&addr->entry, &fail_list);
419 goto again;
420 }
421 }
422 list_splice(&fail_list, &card->ip_list);
423 }
424
425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
426 {
427 struct list_head *tbd_list;
428 struct qeth_ipaddr *todo, *addr;
429 unsigned long flags;
430 int rc;
431
432 QETH_CARD_TEXT(card, 2, "sdiplist");
433 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
434
435 if ((card->state != CARD_STATE_UP &&
436 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
437 return;
438 }
439
440 spin_lock_irqsave(&card->ip_lock, flags);
441 tbd_list = card->ip_tbd_list;
442 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
443 if (!card->ip_tbd_list) {
444 QETH_CARD_TEXT(card, 0, "silnomem");
445 card->ip_tbd_list = tbd_list;
446 spin_unlock_irqrestore(&card->ip_lock, flags);
447 return;
448 } else
449 INIT_LIST_HEAD(card->ip_tbd_list);
450
451 while (!list_empty(tbd_list)) {
452 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
453 list_del(&todo->entry);
454 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
455 __qeth_l3_delete_all_mc(card, &flags);
456 kfree(todo);
457 continue;
458 }
459 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
460 if (rc == 0) {
461 /* nothing to be done; only adjusted refcount */
462 kfree(todo);
463 } else if (rc == 1) {
464 /* new entry to be added to on-card list */
465 spin_unlock_irqrestore(&card->ip_lock, flags);
466 rc = qeth_l3_register_addr_entry(card, todo);
467 spin_lock_irqsave(&card->ip_lock, flags);
468 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
469 list_add_tail(&todo->entry, &card->ip_list);
470 else
471 kfree(todo);
472 } else if (rc == -1) {
473 /* on-card entry to be removed */
474 list_del_init(&addr->entry);
475 spin_unlock_irqrestore(&card->ip_lock, flags);
476 rc = qeth_l3_deregister_addr_entry(card, addr);
477 spin_lock_irqsave(&card->ip_lock, flags);
478 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
479 kfree(addr);
480 else
481 list_add_tail(&addr->entry, &card->ip_list);
482 kfree(todo);
483 }
484 }
485 spin_unlock_irqrestore(&card->ip_lock, flags);
486 kfree(tbd_list);
487 }
488
489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
490 {
491 struct qeth_ipaddr *addr, *tmp;
492 unsigned long flags;
493
494 QETH_CARD_TEXT(card, 4, "clearip");
495 if (recover && card->options.sniffer)
496 return;
497 spin_lock_irqsave(&card->ip_lock, flags);
498 /* clear todo list */
499 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
500 list_del(&addr->entry);
501 kfree(addr);
502 }
503
504 while (!list_empty(&card->ip_list)) {
505 addr = list_entry(card->ip_list.next,
506 struct qeth_ipaddr, entry);
507 list_del_init(&addr->entry);
508 if (!recover || addr->is_multicast) {
509 kfree(addr);
510 continue;
511 }
512 list_add_tail(&addr->entry, card->ip_tbd_list);
513 }
514 spin_unlock_irqrestore(&card->ip_lock, flags);
515 }
516
517 static int qeth_l3_address_exists_in_list(struct list_head *list,
518 struct qeth_ipaddr *addr, int same_type)
519 {
520 struct qeth_ipaddr *tmp;
521
522 list_for_each_entry(tmp, list, entry) {
523 if ((tmp->proto == QETH_PROT_IPV4) &&
524 (addr->proto == QETH_PROT_IPV4) &&
525 ((same_type && (tmp->type == addr->type)) ||
526 (!same_type && (tmp->type != addr->type))) &&
527 (tmp->u.a4.addr == addr->u.a4.addr))
528 return 1;
529
530 if ((tmp->proto == QETH_PROT_IPV6) &&
531 (addr->proto == QETH_PROT_IPV6) &&
532 ((same_type && (tmp->type == addr->type)) ||
533 (!same_type && (tmp->type != addr->type))) &&
534 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
535 sizeof(struct in6_addr)) == 0))
536 return 1;
537
538 }
539 return 0;
540 }
541
542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
543 struct qeth_ipaddr *addr, int ipacmd)
544 {
545 int rc;
546 struct qeth_cmd_buffer *iob;
547 struct qeth_ipa_cmd *cmd;
548
549 QETH_CARD_TEXT(card, 4, "setdelmc");
550
551 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
552 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
553 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
554 if (addr->proto == QETH_PROT_IPV6)
555 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
556 sizeof(struct in6_addr));
557 else
558 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
559
560 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
561
562 return rc;
563 }
564
565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
566 {
567 int i, j;
568 for (i = 0; i < 16; i++) {
569 j = (len) - (i * 8);
570 if (j >= 8)
571 netmask[i] = 0xff;
572 else if (j > 0)
573 netmask[i] = (u8)(0xFF00 >> j);
574 else
575 netmask[i] = 0;
576 }
577 }
578
579 static int qeth_l3_send_setdelip(struct qeth_card *card,
580 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
581 {
582 int rc;
583 struct qeth_cmd_buffer *iob;
584 struct qeth_ipa_cmd *cmd;
585 __u8 netmask[16];
586
587 QETH_CARD_TEXT(card, 4, "setdelip");
588 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
589
590 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
591 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
592 if (addr->proto == QETH_PROT_IPV6) {
593 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
594 sizeof(struct in6_addr));
595 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
596 memcpy(cmd->data.setdelip6.mask, netmask,
597 sizeof(struct in6_addr));
598 cmd->data.setdelip6.flags = flags;
599 } else {
600 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
601 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
602 cmd->data.setdelip4.flags = flags;
603 }
604
605 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
606
607 return rc;
608 }
609
610 static int qeth_l3_send_setrouting(struct qeth_card *card,
611 enum qeth_routing_types type, enum qeth_prot_versions prot)
612 {
613 int rc;
614 struct qeth_ipa_cmd *cmd;
615 struct qeth_cmd_buffer *iob;
616
617 QETH_CARD_TEXT(card, 4, "setroutg");
618 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
619 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
620 cmd->data.setrtg.type = (type);
621 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
622
623 return rc;
624 }
625
626 static void qeth_l3_correct_routing_type(struct qeth_card *card,
627 enum qeth_routing_types *type, enum qeth_prot_versions prot)
628 {
629 if (card->info.type == QETH_CARD_TYPE_IQD) {
630 switch (*type) {
631 case NO_ROUTER:
632 case PRIMARY_CONNECTOR:
633 case SECONDARY_CONNECTOR:
634 case MULTICAST_ROUTER:
635 return;
636 default:
637 goto out_inval;
638 }
639 } else {
640 switch (*type) {
641 case NO_ROUTER:
642 case PRIMARY_ROUTER:
643 case SECONDARY_ROUTER:
644 return;
645 case MULTICAST_ROUTER:
646 if (qeth_is_ipafunc_supported(card, prot,
647 IPA_OSA_MC_ROUTER))
648 return;
649 default:
650 goto out_inval;
651 }
652 }
653 out_inval:
654 *type = NO_ROUTER;
655 }
656
657 int qeth_l3_setrouting_v4(struct qeth_card *card)
658 {
659 int rc;
660
661 QETH_CARD_TEXT(card, 3, "setrtg4");
662
663 qeth_l3_correct_routing_type(card, &card->options.route4.type,
664 QETH_PROT_IPV4);
665
666 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
667 QETH_PROT_IPV4);
668 if (rc) {
669 card->options.route4.type = NO_ROUTER;
670 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
671 " on %s. Type set to 'no router'.\n", rc,
672 QETH_CARD_IFNAME(card));
673 }
674 return rc;
675 }
676
677 int qeth_l3_setrouting_v6(struct qeth_card *card)
678 {
679 int rc = 0;
680
681 QETH_CARD_TEXT(card, 3, "setrtg6");
682 #ifdef CONFIG_QETH_IPV6
683
684 if (!qeth_is_supported(card, IPA_IPV6))
685 return 0;
686 qeth_l3_correct_routing_type(card, &card->options.route6.type,
687 QETH_PROT_IPV6);
688
689 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
690 QETH_PROT_IPV6);
691 if (rc) {
692 card->options.route6.type = NO_ROUTER;
693 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
694 " on %s. Type set to 'no router'.\n", rc,
695 QETH_CARD_IFNAME(card));
696 }
697 #endif
698 return rc;
699 }
700
701 /*
702 * IP address takeover related functions
703 */
704 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
705 {
706
707 struct qeth_ipato_entry *ipatoe, *tmp;
708 unsigned long flags;
709
710 spin_lock_irqsave(&card->ip_lock, flags);
711 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
712 list_del(&ipatoe->entry);
713 kfree(ipatoe);
714 }
715 spin_unlock_irqrestore(&card->ip_lock, flags);
716 }
717
718 int qeth_l3_add_ipato_entry(struct qeth_card *card,
719 struct qeth_ipato_entry *new)
720 {
721 struct qeth_ipato_entry *ipatoe;
722 unsigned long flags;
723 int rc = 0;
724
725 QETH_CARD_TEXT(card, 2, "addipato");
726 spin_lock_irqsave(&card->ip_lock, flags);
727 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
728 if (ipatoe->proto != new->proto)
729 continue;
730 if (!memcmp(ipatoe->addr, new->addr,
731 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
732 (ipatoe->mask_bits == new->mask_bits)) {
733 rc = -EEXIST;
734 break;
735 }
736 }
737 if (!rc)
738 list_add_tail(&new->entry, &card->ipato.entries);
739
740 spin_unlock_irqrestore(&card->ip_lock, flags);
741 return rc;
742 }
743
744 void qeth_l3_del_ipato_entry(struct qeth_card *card,
745 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
746 {
747 struct qeth_ipato_entry *ipatoe, *tmp;
748 unsigned long flags;
749
750 QETH_CARD_TEXT(card, 2, "delipato");
751 spin_lock_irqsave(&card->ip_lock, flags);
752 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
753 if (ipatoe->proto != proto)
754 continue;
755 if (!memcmp(ipatoe->addr, addr,
756 (proto == QETH_PROT_IPV4)? 4:16) &&
757 (ipatoe->mask_bits == mask_bits)) {
758 list_del(&ipatoe->entry);
759 kfree(ipatoe);
760 }
761 }
762 spin_unlock_irqrestore(&card->ip_lock, flags);
763 }
764
765 /*
766 * VIPA related functions
767 */
768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
769 const u8 *addr)
770 {
771 struct qeth_ipaddr *ipaddr;
772 unsigned long flags;
773 int rc = 0;
774
775 ipaddr = qeth_l3_get_addr_buffer(proto);
776 if (ipaddr) {
777 if (proto == QETH_PROT_IPV4) {
778 QETH_CARD_TEXT(card, 2, "addvipa4");
779 memcpy(&ipaddr->u.a4.addr, addr, 4);
780 ipaddr->u.a4.mask = 0;
781 } else if (proto == QETH_PROT_IPV6) {
782 QETH_CARD_TEXT(card, 2, "addvipa6");
783 memcpy(&ipaddr->u.a6.addr, addr, 16);
784 ipaddr->u.a6.pfxlen = 0;
785 }
786 ipaddr->type = QETH_IP_TYPE_VIPA;
787 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
788 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
789 } else
790 return -ENOMEM;
791 spin_lock_irqsave(&card->ip_lock, flags);
792 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
793 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
794 rc = -EEXIST;
795 spin_unlock_irqrestore(&card->ip_lock, flags);
796 if (rc) {
797 kfree(ipaddr);
798 return rc;
799 }
800 if (!qeth_l3_add_ip(card, ipaddr))
801 kfree(ipaddr);
802 qeth_l3_set_ip_addr_list(card);
803 return rc;
804 }
805
806 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
807 const u8 *addr)
808 {
809 struct qeth_ipaddr *ipaddr;
810
811 ipaddr = qeth_l3_get_addr_buffer(proto);
812 if (ipaddr) {
813 if (proto == QETH_PROT_IPV4) {
814 QETH_CARD_TEXT(card, 2, "delvipa4");
815 memcpy(&ipaddr->u.a4.addr, addr, 4);
816 ipaddr->u.a4.mask = 0;
817 } else if (proto == QETH_PROT_IPV6) {
818 QETH_CARD_TEXT(card, 2, "delvipa6");
819 memcpy(&ipaddr->u.a6.addr, addr, 16);
820 ipaddr->u.a6.pfxlen = 0;
821 }
822 ipaddr->type = QETH_IP_TYPE_VIPA;
823 } else
824 return;
825 if (!qeth_l3_delete_ip(card, ipaddr))
826 kfree(ipaddr);
827 qeth_l3_set_ip_addr_list(card);
828 }
829
830 /*
831 * proxy ARP related functions
832 */
833 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
834 const u8 *addr)
835 {
836 struct qeth_ipaddr *ipaddr;
837 unsigned long flags;
838 int rc = 0;
839
840 ipaddr = qeth_l3_get_addr_buffer(proto);
841 if (ipaddr) {
842 if (proto == QETH_PROT_IPV4) {
843 QETH_CARD_TEXT(card, 2, "addrxip4");
844 memcpy(&ipaddr->u.a4.addr, addr, 4);
845 ipaddr->u.a4.mask = 0;
846 } else if (proto == QETH_PROT_IPV6) {
847 QETH_CARD_TEXT(card, 2, "addrxip6");
848 memcpy(&ipaddr->u.a6.addr, addr, 16);
849 ipaddr->u.a6.pfxlen = 0;
850 }
851 ipaddr->type = QETH_IP_TYPE_RXIP;
852 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
853 ipaddr->del_flags = 0;
854 } else
855 return -ENOMEM;
856 spin_lock_irqsave(&card->ip_lock, flags);
857 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
858 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
859 rc = -EEXIST;
860 spin_unlock_irqrestore(&card->ip_lock, flags);
861 if (rc) {
862 kfree(ipaddr);
863 return rc;
864 }
865 if (!qeth_l3_add_ip(card, ipaddr))
866 kfree(ipaddr);
867 qeth_l3_set_ip_addr_list(card);
868 return 0;
869 }
870
871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
872 const u8 *addr)
873 {
874 struct qeth_ipaddr *ipaddr;
875
876 ipaddr = qeth_l3_get_addr_buffer(proto);
877 if (ipaddr) {
878 if (proto == QETH_PROT_IPV4) {
879 QETH_CARD_TEXT(card, 2, "addrxip4");
880 memcpy(&ipaddr->u.a4.addr, addr, 4);
881 ipaddr->u.a4.mask = 0;
882 } else if (proto == QETH_PROT_IPV6) {
883 QETH_CARD_TEXT(card, 2, "addrxip6");
884 memcpy(&ipaddr->u.a6.addr, addr, 16);
885 ipaddr->u.a6.pfxlen = 0;
886 }
887 ipaddr->type = QETH_IP_TYPE_RXIP;
888 } else
889 return;
890 if (!qeth_l3_delete_ip(card, ipaddr))
891 kfree(ipaddr);
892 qeth_l3_set_ip_addr_list(card);
893 }
894
895 static int qeth_l3_register_addr_entry(struct qeth_card *card,
896 struct qeth_ipaddr *addr)
897 {
898 char buf[50];
899 int rc = 0;
900 int cnt = 3;
901
902 if (addr->proto == QETH_PROT_IPV4) {
903 QETH_CARD_TEXT(card, 2, "setaddr4");
904 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
905 } else if (addr->proto == QETH_PROT_IPV6) {
906 QETH_CARD_TEXT(card, 2, "setaddr6");
907 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
908 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
909 } else {
910 QETH_CARD_TEXT(card, 2, "setaddr?");
911 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
912 }
913 do {
914 if (addr->is_multicast)
915 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
916 else
917 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
918 addr->set_flags);
919 if (rc)
920 QETH_CARD_TEXT(card, 2, "failed");
921 } while ((--cnt > 0) && rc);
922 if (rc) {
923 QETH_CARD_TEXT(card, 2, "FAILED");
924 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
925 dev_warn(&card->gdev->dev,
926 "Registering IP address %s failed\n", buf);
927 }
928 return rc;
929 }
930
931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
932 struct qeth_ipaddr *addr)
933 {
934 int rc = 0;
935
936 if (addr->proto == QETH_PROT_IPV4) {
937 QETH_CARD_TEXT(card, 2, "deladdr4");
938 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
939 } else if (addr->proto == QETH_PROT_IPV6) {
940 QETH_CARD_TEXT(card, 2, "deladdr6");
941 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
942 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
943 } else {
944 QETH_CARD_TEXT(card, 2, "deladdr?");
945 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
946 }
947 if (addr->is_multicast)
948 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
949 else
950 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
951 addr->del_flags);
952 if (rc)
953 QETH_CARD_TEXT(card, 2, "failed");
954
955 return rc;
956 }
957
958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
959 {
960 if (cast_type == RTN_MULTICAST)
961 return QETH_CAST_MULTICAST;
962 if (cast_type == RTN_BROADCAST)
963 return QETH_CAST_BROADCAST;
964 return QETH_CAST_UNICAST;
965 }
966
967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
968 {
969 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
970 if (cast_type == RTN_MULTICAST)
971 return ct | QETH_CAST_MULTICAST;
972 if (cast_type == RTN_ANYCAST)
973 return ct | QETH_CAST_ANYCAST;
974 if (cast_type == RTN_BROADCAST)
975 return ct | QETH_CAST_BROADCAST;
976 return ct | QETH_CAST_UNICAST;
977 }
978
979 static int qeth_l3_setadapter_parms(struct qeth_card *card)
980 {
981 int rc;
982
983 QETH_DBF_TEXT(SETUP, 2, "setadprm");
984
985 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
986 dev_info(&card->gdev->dev,
987 "set adapter parameters not supported.\n");
988 QETH_DBF_TEXT(SETUP, 2, " notsupp");
989 return 0;
990 }
991 rc = qeth_query_setadapterparms(card);
992 if (rc) {
993 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
994 "0x%x\n", dev_name(&card->gdev->dev), rc);
995 return rc;
996 }
997 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
998 rc = qeth_setadpparms_change_macaddr(card);
999 if (rc)
1000 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1001 " address failed\n");
1002 }
1003
1004 return rc;
1005 }
1006
1007 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1008 struct qeth_reply *reply, unsigned long data)
1009 {
1010 struct qeth_ipa_cmd *cmd;
1011
1012 QETH_CARD_TEXT(card, 4, "defadpcb");
1013
1014 cmd = (struct qeth_ipa_cmd *) data;
1015 if (cmd->hdr.return_code == 0) {
1016 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1017 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1018 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1019 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1020 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1021 }
1022 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1023 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1024 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1025 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1026 }
1027 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1028 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029 card->info.tx_csum_mask =
1030 cmd->data.setassparms.data.flags_32bit;
1031 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1032 }
1033
1034 return 0;
1035 }
1036
1037 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1038 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1039 __u16 len, enum qeth_prot_versions prot)
1040 {
1041 struct qeth_cmd_buffer *iob;
1042 struct qeth_ipa_cmd *cmd;
1043
1044 QETH_CARD_TEXT(card, 4, "getasscm");
1045 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1046
1047 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1048 cmd->data.setassparms.hdr.assist_no = ipa_func;
1049 cmd->data.setassparms.hdr.length = 8 + len;
1050 cmd->data.setassparms.hdr.command_code = cmd_code;
1051 cmd->data.setassparms.hdr.return_code = 0;
1052 cmd->data.setassparms.hdr.seq_no = 0;
1053
1054 return iob;
1055 }
1056
1057 static int qeth_l3_send_setassparms(struct qeth_card *card,
1058 struct qeth_cmd_buffer *iob, __u16 len, long data,
1059 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1060 unsigned long),
1061 void *reply_param)
1062 {
1063 int rc;
1064 struct qeth_ipa_cmd *cmd;
1065
1066 QETH_CARD_TEXT(card, 4, "sendassp");
1067
1068 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1069 if (len <= sizeof(__u32))
1070 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1071 else /* (len > sizeof(__u32)) */
1072 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1073
1074 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1075 return rc;
1076 }
1077
1078 #ifdef CONFIG_QETH_IPV6
1079 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1080 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1081 {
1082 int rc;
1083 struct qeth_cmd_buffer *iob;
1084
1085 QETH_CARD_TEXT(card, 4, "simassp6");
1086 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1087 0, QETH_PROT_IPV6);
1088 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1089 qeth_l3_default_setassparms_cb, NULL);
1090 return rc;
1091 }
1092 #endif
1093
1094 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1095 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1096 {
1097 int rc;
1098 int length = 0;
1099 struct qeth_cmd_buffer *iob;
1100
1101 QETH_CARD_TEXT(card, 4, "simassp4");
1102 if (data)
1103 length = sizeof(__u32);
1104 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1105 length, QETH_PROT_IPV4);
1106 rc = qeth_l3_send_setassparms(card, iob, length, data,
1107 qeth_l3_default_setassparms_cb, NULL);
1108 return rc;
1109 }
1110
1111 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1112 {
1113 int rc;
1114
1115 QETH_CARD_TEXT(card, 3, "ipaarp");
1116
1117 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1118 dev_info(&card->gdev->dev,
1119 "ARP processing not supported on %s!\n",
1120 QETH_CARD_IFNAME(card));
1121 return 0;
1122 }
1123 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1124 IPA_CMD_ASS_START, 0);
1125 if (rc) {
1126 dev_warn(&card->gdev->dev,
1127 "Starting ARP processing support for %s failed\n",
1128 QETH_CARD_IFNAME(card));
1129 }
1130 return rc;
1131 }
1132
1133 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1134 {
1135 int rc;
1136
1137 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1138
1139 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1140 dev_info(&card->gdev->dev,
1141 "Hardware IP fragmentation not supported on %s\n",
1142 QETH_CARD_IFNAME(card));
1143 return -EOPNOTSUPP;
1144 }
1145
1146 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1147 IPA_CMD_ASS_START, 0);
1148 if (rc) {
1149 dev_warn(&card->gdev->dev,
1150 "Starting IP fragmentation support for %s failed\n",
1151 QETH_CARD_IFNAME(card));
1152 } else
1153 dev_info(&card->gdev->dev,
1154 "Hardware IP fragmentation enabled \n");
1155 return rc;
1156 }
1157
1158 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1159 {
1160 int rc;
1161
1162 QETH_CARD_TEXT(card, 3, "stsrcmac");
1163
1164 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1165 dev_info(&card->gdev->dev,
1166 "Inbound source MAC-address not supported on %s\n",
1167 QETH_CARD_IFNAME(card));
1168 return -EOPNOTSUPP;
1169 }
1170
1171 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1172 IPA_CMD_ASS_START, 0);
1173 if (rc)
1174 dev_warn(&card->gdev->dev,
1175 "Starting source MAC-address support for %s failed\n",
1176 QETH_CARD_IFNAME(card));
1177 return rc;
1178 }
1179
1180 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1181 {
1182 int rc = 0;
1183
1184 QETH_CARD_TEXT(card, 3, "strtvlan");
1185
1186 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1187 dev_info(&card->gdev->dev,
1188 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1189 return -EOPNOTSUPP;
1190 }
1191
1192 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1193 IPA_CMD_ASS_START, 0);
1194 if (rc) {
1195 dev_warn(&card->gdev->dev,
1196 "Starting VLAN support for %s failed\n",
1197 QETH_CARD_IFNAME(card));
1198 } else {
1199 dev_info(&card->gdev->dev, "VLAN enabled\n");
1200 }
1201 return rc;
1202 }
1203
1204 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1205 {
1206 int rc;
1207
1208 QETH_CARD_TEXT(card, 3, "stmcast");
1209
1210 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1211 dev_info(&card->gdev->dev,
1212 "Multicast not supported on %s\n",
1213 QETH_CARD_IFNAME(card));
1214 return -EOPNOTSUPP;
1215 }
1216
1217 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1218 IPA_CMD_ASS_START, 0);
1219 if (rc) {
1220 dev_warn(&card->gdev->dev,
1221 "Starting multicast support for %s failed\n",
1222 QETH_CARD_IFNAME(card));
1223 } else {
1224 dev_info(&card->gdev->dev, "Multicast enabled\n");
1225 card->dev->flags |= IFF_MULTICAST;
1226 }
1227 return rc;
1228 }
1229
1230 #ifdef CONFIG_QETH_IPV6
1231 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1232 {
1233 int rc;
1234
1235 QETH_CARD_TEXT(card, 3, "softipv6");
1236
1237 if (card->info.type == QETH_CARD_TYPE_IQD)
1238 goto out;
1239
1240 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1241 if (rc) {
1242 dev_err(&card->gdev->dev,
1243 "Activating IPv6 support for %s failed\n",
1244 QETH_CARD_IFNAME(card));
1245 return rc;
1246 }
1247 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1248 IPA_CMD_ASS_START, 3);
1249 if (rc) {
1250 dev_err(&card->gdev->dev,
1251 "Activating IPv6 support for %s failed\n",
1252 QETH_CARD_IFNAME(card));
1253 return rc;
1254 }
1255 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1256 IPA_CMD_ASS_START);
1257 if (rc) {
1258 dev_err(&card->gdev->dev,
1259 "Activating IPv6 support for %s failed\n",
1260 QETH_CARD_IFNAME(card));
1261 return rc;
1262 }
1263 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1264 IPA_CMD_ASS_START);
1265 if (rc) {
1266 dev_warn(&card->gdev->dev,
1267 "Enabling the passthrough mode for %s failed\n",
1268 QETH_CARD_IFNAME(card));
1269 return rc;
1270 }
1271 out:
1272 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1273 return 0;
1274 }
1275 #endif
1276
1277 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1278 {
1279 int rc = 0;
1280
1281 QETH_CARD_TEXT(card, 3, "strtipv6");
1282
1283 if (!qeth_is_supported(card, IPA_IPV6)) {
1284 dev_info(&card->gdev->dev,
1285 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1286 return 0;
1287 }
1288 #ifdef CONFIG_QETH_IPV6
1289 rc = qeth_l3_softsetup_ipv6(card);
1290 #endif
1291 return rc ;
1292 }
1293
1294 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1295 {
1296 int rc;
1297
1298 QETH_CARD_TEXT(card, 3, "stbrdcst");
1299 card->info.broadcast_capable = 0;
1300 if (!qeth_is_supported(card, IPA_FILTERING)) {
1301 dev_info(&card->gdev->dev,
1302 "Broadcast not supported on %s\n",
1303 QETH_CARD_IFNAME(card));
1304 rc = -EOPNOTSUPP;
1305 goto out;
1306 }
1307 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1308 IPA_CMD_ASS_START, 0);
1309 if (rc) {
1310 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1311 "%s failed\n", QETH_CARD_IFNAME(card));
1312 goto out;
1313 }
1314
1315 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1316 IPA_CMD_ASS_CONFIGURE, 1);
1317 if (rc) {
1318 dev_warn(&card->gdev->dev,
1319 "Setting up broadcast filtering for %s failed\n",
1320 QETH_CARD_IFNAME(card));
1321 goto out;
1322 }
1323 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1324 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1325 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1326 IPA_CMD_ASS_ENABLE, 1);
1327 if (rc) {
1328 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1329 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1330 goto out;
1331 }
1332 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1333 out:
1334 if (card->info.broadcast_capable)
1335 card->dev->flags |= IFF_BROADCAST;
1336 else
1337 card->dev->flags &= ~IFF_BROADCAST;
1338 return rc;
1339 }
1340
1341 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1342 {
1343 int rc;
1344
1345 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1346 IPA_CMD_ASS_START, 0);
1347 if (rc) {
1348 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1349 "failed, using SW checksumming\n",
1350 QETH_CARD_IFNAME(card));
1351 return rc;
1352 }
1353 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1354 IPA_CMD_ASS_ENABLE,
1355 card->info.csum_mask);
1356 if (rc) {
1357 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1358 "failed, using SW checksumming\n",
1359 QETH_CARD_IFNAME(card));
1360 return rc;
1361 }
1362 return 0;
1363 }
1364
1365 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1366 {
1367 int rc = 0;
1368
1369 if (on) {
1370 rc = qeth_l3_send_checksum_command(card);
1371 if (rc)
1372 return -EIO;
1373 dev_info(&card->gdev->dev,
1374 "HW Checksumming (inbound) enabled\n");
1375 } else {
1376 rc = qeth_l3_send_simple_setassparms(card,
1377 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1378 if (rc)
1379 return -EIO;
1380 }
1381
1382 return 0;
1383 }
1384
1385 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1386 {
1387 QETH_CARD_TEXT(card, 3, "strtcsum");
1388
1389 if (card->dev->features & NETIF_F_RXCSUM) {
1390 rtnl_lock();
1391 /* force set_features call */
1392 card->dev->features &= ~NETIF_F_RXCSUM;
1393 netdev_update_features(card->dev);
1394 rtnl_unlock();
1395 }
1396 return 0;
1397 }
1398
1399 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1400 {
1401 int rc = 0;
1402
1403 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1404 return rc;
1405 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1406 IPA_CMD_ASS_START, 0);
1407 if (rc)
1408 goto err_out;
1409 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1410 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1411 if (rc)
1412 goto err_out;
1413 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1414 return rc;
1415 err_out:
1416 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1417 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1418 return rc;
1419 }
1420
1421 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1422 {
1423 int rc;
1424
1425 QETH_CARD_TEXT(card, 3, "sttso");
1426
1427 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1428 dev_info(&card->gdev->dev,
1429 "Outbound TSO not supported on %s\n",
1430 QETH_CARD_IFNAME(card));
1431 rc = -EOPNOTSUPP;
1432 } else {
1433 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1434 IPA_CMD_ASS_START, 0);
1435 if (rc)
1436 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1437 "segmentation offload for %s failed\n",
1438 QETH_CARD_IFNAME(card));
1439 else
1440 dev_info(&card->gdev->dev,
1441 "Outbound TSO enabled\n");
1442 }
1443 if (rc)
1444 card->dev->features &= ~NETIF_F_TSO;
1445 return rc;
1446 }
1447
1448 static int qeth_l3_start_ipassists(struct qeth_card *card)
1449 {
1450 QETH_CARD_TEXT(card, 3, "strtipas");
1451
1452 qeth_set_access_ctrl_online(card); /* go on*/
1453 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1454 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1455 qeth_l3_start_ipa_source_mac(card); /* go on*/
1456 qeth_l3_start_ipa_vlan(card); /* go on*/
1457 qeth_l3_start_ipa_multicast(card); /* go on*/
1458 qeth_l3_start_ipa_ipv6(card); /* go on*/
1459 qeth_l3_start_ipa_broadcast(card); /* go on*/
1460 qeth_l3_start_ipa_checksum(card); /* go on*/
1461 qeth_l3_start_ipa_tx_checksum(card);
1462 qeth_l3_start_ipa_tso(card); /* go on*/
1463 return 0;
1464 }
1465
1466 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1467 struct qeth_reply *reply, unsigned long data)
1468 {
1469 struct qeth_ipa_cmd *cmd;
1470
1471 cmd = (struct qeth_ipa_cmd *) data;
1472 if (cmd->hdr.return_code == 0)
1473 memcpy(card->dev->dev_addr,
1474 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1475 else
1476 eth_random_addr(card->dev->dev_addr);
1477
1478 return 0;
1479 }
1480
1481 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1482 {
1483 int rc = 0;
1484 struct qeth_cmd_buffer *iob;
1485 struct qeth_ipa_cmd *cmd;
1486
1487 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1488
1489 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1490 QETH_PROT_IPV6);
1491 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1492 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1493 card->info.unique_id;
1494
1495 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1496 NULL);
1497 return rc;
1498 }
1499
1500 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1501 struct qeth_reply *reply, unsigned long data)
1502 {
1503 struct qeth_ipa_cmd *cmd;
1504
1505 cmd = (struct qeth_ipa_cmd *) data;
1506 if (cmd->hdr.return_code == 0)
1507 card->info.unique_id = *((__u16 *)
1508 &cmd->data.create_destroy_addr.unique_id[6]);
1509 else {
1510 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1511 UNIQUE_ID_NOT_BY_CARD;
1512 dev_warn(&card->gdev->dev, "The network adapter failed to "
1513 "generate a unique ID\n");
1514 }
1515 return 0;
1516 }
1517
1518 static int qeth_l3_get_unique_id(struct qeth_card *card)
1519 {
1520 int rc = 0;
1521 struct qeth_cmd_buffer *iob;
1522 struct qeth_ipa_cmd *cmd;
1523
1524 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1525
1526 if (!qeth_is_supported(card, IPA_IPV6)) {
1527 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1528 UNIQUE_ID_NOT_BY_CARD;
1529 return 0;
1530 }
1531
1532 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1533 QETH_PROT_IPV6);
1534 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1535 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1536 card->info.unique_id;
1537
1538 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1539 return rc;
1540 }
1541
1542 static int
1543 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1544 unsigned long data)
1545 {
1546 struct qeth_ipa_cmd *cmd;
1547 __u16 rc;
1548
1549 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1550
1551 cmd = (struct qeth_ipa_cmd *)data;
1552 rc = cmd->hdr.return_code;
1553 if (rc)
1554 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1555 switch (cmd->data.diagass.action) {
1556 case QETH_DIAGS_CMD_TRACE_QUERY:
1557 break;
1558 case QETH_DIAGS_CMD_TRACE_DISABLE:
1559 switch (rc) {
1560 case 0:
1561 case IPA_RC_INVALID_SUBCMD:
1562 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1563 dev_info(&card->gdev->dev, "The HiperSockets network "
1564 "traffic analyzer is deactivated\n");
1565 break;
1566 default:
1567 break;
1568 }
1569 break;
1570 case QETH_DIAGS_CMD_TRACE_ENABLE:
1571 switch (rc) {
1572 case 0:
1573 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1574 dev_info(&card->gdev->dev, "The HiperSockets network "
1575 "traffic analyzer is activated\n");
1576 break;
1577 case IPA_RC_HARDWARE_AUTH_ERROR:
1578 dev_warn(&card->gdev->dev, "The device is not "
1579 "authorized to run as a HiperSockets network "
1580 "traffic analyzer\n");
1581 break;
1582 case IPA_RC_TRACE_ALREADY_ACTIVE:
1583 dev_warn(&card->gdev->dev, "A HiperSockets "
1584 "network traffic analyzer is already "
1585 "active in the HiperSockets LAN\n");
1586 break;
1587 default:
1588 break;
1589 }
1590 break;
1591 default:
1592 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1593 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1594 }
1595
1596 return 0;
1597 }
1598
1599 static int
1600 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1601 {
1602 struct qeth_cmd_buffer *iob;
1603 struct qeth_ipa_cmd *cmd;
1604
1605 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1606
1607 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1608 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1609 cmd->data.diagass.subcmd_len = 16;
1610 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1611 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1612 cmd->data.diagass.action = diags_cmd;
1613 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1614 }
1615
1616 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1617 struct net_device *dev)
1618 {
1619 ip_eth_mc_map(ipm, mac);
1620 }
1621
1622 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1623 {
1624 struct qeth_ipaddr *ipm;
1625 struct ip_mc_list *im4;
1626 char buf[MAX_ADDR_LEN];
1627
1628 QETH_CARD_TEXT(card, 4, "addmc");
1629 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1630 im4 = rcu_dereference(im4->next_rcu)) {
1631 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1632 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1633 if (!ipm)
1634 continue;
1635 ipm->u.a4.addr = im4->multiaddr;
1636 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1637 ipm->is_multicast = 1;
1638 if (!qeth_l3_add_ip(card, ipm))
1639 kfree(ipm);
1640 }
1641 }
1642
1643 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1644 {
1645 struct in_device *in_dev;
1646 u16 vid;
1647
1648 QETH_CARD_TEXT(card, 4, "addmcvl");
1649 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1650 return;
1651
1652 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1653 struct net_device *netdev;
1654
1655 rcu_read_lock();
1656 netdev = __vlan_find_dev_deep(card->dev, vid);
1657 rcu_read_unlock();
1658 if (netdev == NULL ||
1659 !(netdev->flags & IFF_UP))
1660 continue;
1661 in_dev = in_dev_get(netdev);
1662 if (!in_dev)
1663 continue;
1664 rcu_read_lock();
1665 qeth_l3_add_mc(card, in_dev);
1666 rcu_read_unlock();
1667 in_dev_put(in_dev);
1668 }
1669 }
1670
1671 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1672 {
1673 struct in_device *in4_dev;
1674
1675 QETH_CARD_TEXT(card, 4, "chkmcv4");
1676 in4_dev = in_dev_get(card->dev);
1677 if (in4_dev == NULL)
1678 return;
1679 rcu_read_lock();
1680 qeth_l3_add_mc(card, in4_dev);
1681 qeth_l3_add_vlan_mc(card);
1682 rcu_read_unlock();
1683 in_dev_put(in4_dev);
1684 }
1685
1686 #ifdef CONFIG_QETH_IPV6
1687 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1688 {
1689 struct qeth_ipaddr *ipm;
1690 struct ifmcaddr6 *im6;
1691 char buf[MAX_ADDR_LEN];
1692
1693 QETH_CARD_TEXT(card, 4, "addmc6");
1694 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1695 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1696 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1697 if (!ipm)
1698 continue;
1699 ipm->is_multicast = 1;
1700 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1701 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1702 sizeof(struct in6_addr));
1703 if (!qeth_l3_add_ip(card, ipm))
1704 kfree(ipm);
1705 }
1706 }
1707
1708 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1709 {
1710 struct inet6_dev *in_dev;
1711 u16 vid;
1712
1713 QETH_CARD_TEXT(card, 4, "admc6vl");
1714 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1715 return;
1716
1717 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1718 struct net_device *netdev;
1719
1720 netdev = __vlan_find_dev_deep(card->dev, vid);
1721 if (netdev == NULL ||
1722 !(netdev->flags & IFF_UP))
1723 continue;
1724 in_dev = in6_dev_get(netdev);
1725 if (!in_dev)
1726 continue;
1727 read_lock_bh(&in_dev->lock);
1728 qeth_l3_add_mc6(card, in_dev);
1729 read_unlock_bh(&in_dev->lock);
1730 in6_dev_put(in_dev);
1731 }
1732 }
1733
1734 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1735 {
1736 struct inet6_dev *in6_dev;
1737
1738 QETH_CARD_TEXT(card, 4, "chkmcv6");
1739 if (!qeth_is_supported(card, IPA_IPV6))
1740 return ;
1741 in6_dev = in6_dev_get(card->dev);
1742 if (in6_dev == NULL)
1743 return;
1744 read_lock_bh(&in6_dev->lock);
1745 qeth_l3_add_mc6(card, in6_dev);
1746 qeth_l3_add_vlan_mc6(card);
1747 read_unlock_bh(&in6_dev->lock);
1748 in6_dev_put(in6_dev);
1749 }
1750 #endif /* CONFIG_QETH_IPV6 */
1751
1752 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1753 unsigned short vid)
1754 {
1755 struct in_device *in_dev;
1756 struct in_ifaddr *ifa;
1757 struct qeth_ipaddr *addr;
1758 struct net_device *netdev;
1759
1760 QETH_CARD_TEXT(card, 4, "frvaddr4");
1761
1762 netdev = __vlan_find_dev_deep(card->dev, vid);
1763 if (!netdev)
1764 return;
1765 in_dev = in_dev_get(netdev);
1766 if (!in_dev)
1767 return;
1768 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1769 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1770 if (addr) {
1771 addr->u.a4.addr = ifa->ifa_address;
1772 addr->u.a4.mask = ifa->ifa_mask;
1773 addr->type = QETH_IP_TYPE_NORMAL;
1774 if (!qeth_l3_delete_ip(card, addr))
1775 kfree(addr);
1776 }
1777 }
1778 in_dev_put(in_dev);
1779 }
1780
1781 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1782 unsigned short vid)
1783 {
1784 #ifdef CONFIG_QETH_IPV6
1785 struct inet6_dev *in6_dev;
1786 struct inet6_ifaddr *ifa;
1787 struct qeth_ipaddr *addr;
1788 struct net_device *netdev;
1789
1790 QETH_CARD_TEXT(card, 4, "frvaddr6");
1791
1792 netdev = __vlan_find_dev_deep(card->dev, vid);
1793 if (!netdev)
1794 return;
1795 in6_dev = in6_dev_get(netdev);
1796 if (!in6_dev)
1797 return;
1798 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1799 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1800 if (addr) {
1801 memcpy(&addr->u.a6.addr, &ifa->addr,
1802 sizeof(struct in6_addr));
1803 addr->u.a6.pfxlen = ifa->prefix_len;
1804 addr->type = QETH_IP_TYPE_NORMAL;
1805 if (!qeth_l3_delete_ip(card, addr))
1806 kfree(addr);
1807 }
1808 }
1809 in6_dev_put(in6_dev);
1810 #endif /* CONFIG_QETH_IPV6 */
1811 }
1812
1813 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1814 unsigned short vid)
1815 {
1816 qeth_l3_free_vlan_addresses4(card, vid);
1817 qeth_l3_free_vlan_addresses6(card, vid);
1818 }
1819
1820 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1821 {
1822 struct qeth_card *card = dev->ml_priv;
1823
1824 set_bit(vid, card->active_vlans);
1825 return 0;
1826 }
1827
1828 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1829 {
1830 struct qeth_card *card = dev->ml_priv;
1831 unsigned long flags;
1832
1833 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1834 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1835 QETH_CARD_TEXT(card, 3, "kidREC");
1836 return 0;
1837 }
1838 spin_lock_irqsave(&card->vlanlock, flags);
1839 /* unregister IP addresses of vlan device */
1840 qeth_l3_free_vlan_addresses(card, vid);
1841 clear_bit(vid, card->active_vlans);
1842 spin_unlock_irqrestore(&card->vlanlock, flags);
1843 qeth_l3_set_multicast_list(card->dev);
1844 return 0;
1845 }
1846
1847 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1848 struct sk_buff *skb, struct qeth_hdr *hdr,
1849 unsigned short *vlan_id)
1850 {
1851 __be16 prot;
1852 struct iphdr *ip_hdr;
1853 unsigned char tg_addr[MAX_ADDR_LEN];
1854 int is_vlan = 0;
1855
1856 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1857 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1858 ETH_P_IP);
1859 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1860 case QETH_CAST_MULTICAST:
1861 switch (prot) {
1862 #ifdef CONFIG_QETH_IPV6
1863 case __constant_htons(ETH_P_IPV6):
1864 ndisc_mc_map((struct in6_addr *)
1865 skb->data + 24,
1866 tg_addr, card->dev, 0);
1867 break;
1868 #endif
1869 case __constant_htons(ETH_P_IP):
1870 ip_hdr = (struct iphdr *)skb->data;
1871 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1872 break;
1873 default:
1874 memcpy(tg_addr, card->dev->broadcast,
1875 card->dev->addr_len);
1876 }
1877 card->stats.multicast++;
1878 skb->pkt_type = PACKET_MULTICAST;
1879 break;
1880 case QETH_CAST_BROADCAST:
1881 memcpy(tg_addr, card->dev->broadcast,
1882 card->dev->addr_len);
1883 card->stats.multicast++;
1884 skb->pkt_type = PACKET_BROADCAST;
1885 break;
1886 case QETH_CAST_UNICAST:
1887 case QETH_CAST_ANYCAST:
1888 case QETH_CAST_NOCAST:
1889 default:
1890 if (card->options.sniffer)
1891 skb->pkt_type = PACKET_OTHERHOST;
1892 else
1893 skb->pkt_type = PACKET_HOST;
1894 memcpy(tg_addr, card->dev->dev_addr,
1895 card->dev->addr_len);
1896 }
1897 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1898 card->dev->header_ops->create(skb, card->dev, prot,
1899 tg_addr, &hdr->hdr.l3.dest_addr[2],
1900 card->dev->addr_len);
1901 else
1902 card->dev->header_ops->create(skb, card->dev, prot,
1903 tg_addr, "FAKELL", card->dev->addr_len);
1904 }
1905
1906 skb->protocol = eth_type_trans(skb, card->dev);
1907
1908 if (hdr->hdr.l3.ext_flags &
1909 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1910 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1911 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1912 is_vlan = 1;
1913 }
1914
1915 if (card->dev->features & NETIF_F_RXCSUM) {
1916 if ((hdr->hdr.l3.ext_flags &
1917 (QETH_HDR_EXT_CSUM_HDR_REQ |
1918 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1919 (QETH_HDR_EXT_CSUM_HDR_REQ |
1920 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1921 skb->ip_summed = CHECKSUM_UNNECESSARY;
1922 else
1923 skb->ip_summed = CHECKSUM_NONE;
1924 } else
1925 skb->ip_summed = CHECKSUM_NONE;
1926
1927 return is_vlan;
1928 }
1929
1930 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1931 int budget, int *done)
1932 {
1933 int work_done = 0;
1934 struct sk_buff *skb;
1935 struct qeth_hdr *hdr;
1936 __u16 vlan_tag = 0;
1937 int is_vlan;
1938 unsigned int len;
1939 __u16 magic;
1940
1941 *done = 0;
1942 BUG_ON(!budget);
1943 while (budget) {
1944 skb = qeth_core_get_next_skb(card,
1945 &card->qdio.in_q->bufs[card->rx.b_index],
1946 &card->rx.b_element, &card->rx.e_offset, &hdr);
1947 if (!skb) {
1948 *done = 1;
1949 break;
1950 }
1951 skb->dev = card->dev;
1952 switch (hdr->hdr.l3.id) {
1953 case QETH_HEADER_TYPE_LAYER3:
1954 magic = *(__u16 *)skb->data;
1955 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1956 (magic == ETH_P_AF_IUCV)) {
1957 skb->protocol = ETH_P_AF_IUCV;
1958 skb->pkt_type = PACKET_HOST;
1959 skb->mac_header = NET_SKB_PAD;
1960 skb->dev = card->dev;
1961 len = skb->len;
1962 card->dev->header_ops->create(skb, card->dev, 0,
1963 card->dev->dev_addr, "FAKELL",
1964 card->dev->addr_len);
1965 netif_receive_skb(skb);
1966 } else {
1967 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1968 &vlan_tag);
1969 len = skb->len;
1970 if (is_vlan && !card->options.sniffer)
1971 __vlan_hwaccel_put_tag(skb, vlan_tag);
1972 napi_gro_receive(&card->napi, skb);
1973 }
1974 break;
1975 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1976 skb->pkt_type = PACKET_HOST;
1977 skb->protocol = eth_type_trans(skb, skb->dev);
1978 len = skb->len;
1979 netif_receive_skb(skb);
1980 break;
1981 default:
1982 dev_kfree_skb_any(skb);
1983 QETH_CARD_TEXT(card, 3, "inbunkno");
1984 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1985 continue;
1986 }
1987 work_done++;
1988 budget--;
1989 card->stats.rx_packets++;
1990 card->stats.rx_bytes += len;
1991 }
1992 return work_done;
1993 }
1994
1995 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1996 {
1997 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1998 int work_done = 0;
1999 struct qeth_qdio_buffer *buffer;
2000 int done;
2001 int new_budget = budget;
2002
2003 if (card->options.performance_stats) {
2004 card->perf_stats.inbound_cnt++;
2005 card->perf_stats.inbound_start_time = qeth_get_micros();
2006 }
2007
2008 while (1) {
2009 if (!card->rx.b_count) {
2010 card->rx.qdio_err = 0;
2011 card->rx.b_count = qdio_get_next_buffers(
2012 card->data.ccwdev, 0, &card->rx.b_index,
2013 &card->rx.qdio_err);
2014 if (card->rx.b_count <= 0) {
2015 card->rx.b_count = 0;
2016 break;
2017 }
2018 card->rx.b_element =
2019 &card->qdio.in_q->bufs[card->rx.b_index]
2020 .buffer->element[0];
2021 card->rx.e_offset = 0;
2022 }
2023
2024 while (card->rx.b_count) {
2025 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2026 if (!(card->rx.qdio_err &&
2027 qeth_check_qdio_errors(card, buffer->buffer,
2028 card->rx.qdio_err, "qinerr")))
2029 work_done += qeth_l3_process_inbound_buffer(
2030 card, new_budget, &done);
2031 else
2032 done = 1;
2033
2034 if (done) {
2035 if (card->options.performance_stats)
2036 card->perf_stats.bufs_rec++;
2037 qeth_put_buffer_pool_entry(card,
2038 buffer->pool_entry);
2039 qeth_queue_input_buffer(card, card->rx.b_index);
2040 card->rx.b_count--;
2041 if (card->rx.b_count) {
2042 card->rx.b_index =
2043 (card->rx.b_index + 1) %
2044 QDIO_MAX_BUFFERS_PER_Q;
2045 card->rx.b_element =
2046 &card->qdio.in_q
2047 ->bufs[card->rx.b_index]
2048 .buffer->element[0];
2049 card->rx.e_offset = 0;
2050 }
2051 }
2052
2053 if (work_done >= budget)
2054 goto out;
2055 else
2056 new_budget = budget - work_done;
2057 }
2058 }
2059
2060 napi_complete(napi);
2061 if (qdio_start_irq(card->data.ccwdev, 0))
2062 napi_schedule(&card->napi);
2063 out:
2064 if (card->options.performance_stats)
2065 card->perf_stats.inbound_time += qeth_get_micros() -
2066 card->perf_stats.inbound_start_time;
2067 return work_done;
2068 }
2069
2070 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2071 struct qeth_card *card)
2072 {
2073 int rc = 0;
2074 u16 vid;
2075
2076 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2077 struct net_device *netdev;
2078
2079 rcu_read_lock();
2080 netdev = __vlan_find_dev_deep(card->dev, vid);
2081 rcu_read_unlock();
2082 if (netdev == dev) {
2083 rc = QETH_VLAN_CARD;
2084 break;
2085 }
2086 }
2087
2088 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2089 return 0;
2090
2091 return rc;
2092 }
2093
2094 static int qeth_l3_verify_dev(struct net_device *dev)
2095 {
2096 struct qeth_card *card;
2097 unsigned long flags;
2098 int rc = 0;
2099
2100 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2101 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2102 if (card->dev == dev) {
2103 rc = QETH_REAL_CARD;
2104 break;
2105 }
2106 rc = qeth_l3_verify_vlan_dev(dev, card);
2107 if (rc)
2108 break;
2109 }
2110 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2111
2112 return rc;
2113 }
2114
2115 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2116 {
2117 struct qeth_card *card = NULL;
2118 int rc;
2119
2120 rc = qeth_l3_verify_dev(dev);
2121 if (rc == QETH_REAL_CARD)
2122 card = dev->ml_priv;
2123 else if (rc == QETH_VLAN_CARD)
2124 card = vlan_dev_real_dev(dev)->ml_priv;
2125 if (card && card->options.layer2)
2126 card = NULL;
2127 if (card)
2128 QETH_CARD_TEXT_(card, 4, "%d", rc);
2129 return card ;
2130 }
2131
2132 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2133 {
2134 int rc = 0;
2135
2136 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2137 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2138
2139 qeth_set_allowed_threads(card, 0, 1);
2140 if (card->options.sniffer &&
2141 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2142 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2143 if (card->read.state == CH_STATE_UP &&
2144 card->write.state == CH_STATE_UP &&
2145 (card->state == CARD_STATE_UP)) {
2146 if (recovery_mode)
2147 qeth_l3_stop(card->dev);
2148 else {
2149 rtnl_lock();
2150 dev_close(card->dev);
2151 rtnl_unlock();
2152 }
2153 card->state = CARD_STATE_SOFTSETUP;
2154 }
2155 if (card->state == CARD_STATE_SOFTSETUP) {
2156 qeth_l3_clear_ip_list(card, 1);
2157 qeth_clear_ipacmd_list(card);
2158 card->state = CARD_STATE_HARDSETUP;
2159 }
2160 if (card->state == CARD_STATE_HARDSETUP) {
2161 qeth_qdio_clear_card(card, 0);
2162 qeth_clear_qdio_buffers(card);
2163 qeth_clear_working_pool_list(card);
2164 card->state = CARD_STATE_DOWN;
2165 }
2166 if (card->state == CARD_STATE_DOWN) {
2167 qeth_clear_cmd_buffers(&card->read);
2168 qeth_clear_cmd_buffers(&card->write);
2169 }
2170 return rc;
2171 }
2172
2173 /*
2174 * test for and Switch promiscuous mode (on or off)
2175 * either for guestlan or HiperSocket Sniffer
2176 */
2177 static void
2178 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2179 {
2180 struct net_device *dev = card->dev;
2181
2182 if (((dev->flags & IFF_PROMISC) &&
2183 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2184 (!(dev->flags & IFF_PROMISC) &&
2185 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2186 return;
2187
2188 if (card->info.guestlan) { /* Guestlan trace */
2189 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2190 qeth_setadp_promisc_mode(card);
2191 } else if (card->options.sniffer && /* HiperSockets trace */
2192 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2193 if (dev->flags & IFF_PROMISC) {
2194 QETH_CARD_TEXT(card, 3, "+promisc");
2195 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2196 } else {
2197 QETH_CARD_TEXT(card, 3, "-promisc");
2198 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2199 }
2200 }
2201 }
2202
2203 static void qeth_l3_set_multicast_list(struct net_device *dev)
2204 {
2205 struct qeth_card *card = dev->ml_priv;
2206
2207 QETH_CARD_TEXT(card, 3, "setmulti");
2208 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2209 (card->state != CARD_STATE_UP))
2210 return;
2211 if (!card->options.sniffer) {
2212 qeth_l3_delete_mc_addresses(card);
2213 qeth_l3_add_multicast_ipv4(card);
2214 #ifdef CONFIG_QETH_IPV6
2215 qeth_l3_add_multicast_ipv6(card);
2216 #endif
2217 qeth_l3_set_ip_addr_list(card);
2218 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2219 return;
2220 }
2221 qeth_l3_handle_promisc_mode(card);
2222 }
2223
2224 static const char *qeth_l3_arp_get_error_cause(int *rc)
2225 {
2226 switch (*rc) {
2227 case QETH_IPA_ARP_RC_FAILED:
2228 *rc = -EIO;
2229 return "operation failed";
2230 case QETH_IPA_ARP_RC_NOTSUPP:
2231 *rc = -EOPNOTSUPP;
2232 return "operation not supported";
2233 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2234 *rc = -EINVAL;
2235 return "argument out of range";
2236 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2237 *rc = -EOPNOTSUPP;
2238 return "query operation not supported";
2239 case QETH_IPA_ARP_RC_Q_NO_DATA:
2240 *rc = -ENOENT;
2241 return "no query data available";
2242 default:
2243 return "unknown error";
2244 }
2245 }
2246
2247 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2248 {
2249 int tmp;
2250 int rc;
2251
2252 QETH_CARD_TEXT(card, 3, "arpstnoe");
2253
2254 /*
2255 * currently GuestLAN only supports the ARP assist function
2256 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2257 * thus we say EOPNOTSUPP for this ARP function
2258 */
2259 if (card->info.guestlan)
2260 return -EOPNOTSUPP;
2261 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2262 return -EOPNOTSUPP;
2263 }
2264 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2265 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2266 no_entries);
2267 if (rc) {
2268 tmp = rc;
2269 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2270 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2271 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2272 }
2273 return rc;
2274 }
2275
2276 static __u32 get_arp_entry_size(struct qeth_card *card,
2277 struct qeth_arp_query_data *qdata,
2278 struct qeth_arp_entrytype *type, __u8 strip_entries)
2279 {
2280 __u32 rc;
2281 __u8 is_hsi;
2282
2283 is_hsi = qdata->reply_bits == 5;
2284 if (type->ip == QETHARP_IP_ADDR_V4) {
2285 QETH_CARD_TEXT(card, 4, "arpev4");
2286 if (strip_entries) {
2287 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2288 sizeof(struct qeth_arp_qi_entry7_short);
2289 } else {
2290 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2291 sizeof(struct qeth_arp_qi_entry7);
2292 }
2293 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2294 QETH_CARD_TEXT(card, 4, "arpev6");
2295 if (strip_entries) {
2296 rc = is_hsi ?
2297 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2298 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2299 } else {
2300 rc = is_hsi ?
2301 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2302 sizeof(struct qeth_arp_qi_entry7_ipv6);
2303 }
2304 } else {
2305 QETH_CARD_TEXT(card, 4, "arpinv");
2306 rc = 0;
2307 }
2308
2309 return rc;
2310 }
2311
2312 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2313 {
2314 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2315 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2316 }
2317
2318 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2319 struct qeth_reply *reply, unsigned long data)
2320 {
2321 struct qeth_ipa_cmd *cmd;
2322 struct qeth_arp_query_data *qdata;
2323 struct qeth_arp_query_info *qinfo;
2324 int i;
2325 int e;
2326 int entrybytes_done;
2327 int stripped_bytes;
2328 __u8 do_strip_entries;
2329
2330 QETH_CARD_TEXT(card, 3, "arpquecb");
2331
2332 qinfo = (struct qeth_arp_query_info *) reply->param;
2333 cmd = (struct qeth_ipa_cmd *) data;
2334 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2335 if (cmd->hdr.return_code) {
2336 QETH_CARD_TEXT(card, 4, "arpcberr");
2337 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2338 return 0;
2339 }
2340 if (cmd->data.setassparms.hdr.return_code) {
2341 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2342 QETH_CARD_TEXT(card, 4, "setaperr");
2343 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2344 return 0;
2345 }
2346 qdata = &cmd->data.setassparms.data.query_arp;
2347 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2348
2349 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2350 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2351 entrybytes_done = 0;
2352 for (e = 0; e < qdata->no_entries; ++e) {
2353 char *cur_entry;
2354 __u32 esize;
2355 struct qeth_arp_entrytype *etype;
2356
2357 cur_entry = &qdata->data + entrybytes_done;
2358 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2359 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2360 QETH_CARD_TEXT(card, 4, "pmis");
2361 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2362 break;
2363 }
2364 esize = get_arp_entry_size(card, qdata, etype,
2365 do_strip_entries);
2366 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2367 if (!esize)
2368 break;
2369
2370 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2371 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2372 cmd->hdr.return_code = IPA_RC_ENOMEM;
2373 goto out_error;
2374 }
2375
2376 memcpy(qinfo->udata + qinfo->udata_offset,
2377 &qdata->data + entrybytes_done + stripped_bytes,
2378 esize);
2379 entrybytes_done += esize + stripped_bytes;
2380 qinfo->udata_offset += esize;
2381 ++qinfo->no_entries;
2382 }
2383 /* check if all replies received ... */
2384 if (cmd->data.setassparms.hdr.seq_no <
2385 cmd->data.setassparms.hdr.number_of_replies)
2386 return 1;
2387 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2388 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2389 /* keep STRIP_ENTRIES flag so the user program can distinguish
2390 * stripped entries from normal ones */
2391 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2392 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2393 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2394 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2395 return 0;
2396 out_error:
2397 i = 0;
2398 memcpy(qinfo->udata, &i, 4);
2399 return 0;
2400 }
2401
2402 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2403 struct qeth_cmd_buffer *iob, int len,
2404 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2405 unsigned long),
2406 void *reply_param)
2407 {
2408 QETH_CARD_TEXT(card, 4, "sendarp");
2409
2410 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2411 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2412 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2413 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2414 reply_cb, reply_param);
2415 }
2416
2417 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2418 enum qeth_prot_versions prot,
2419 struct qeth_arp_query_info *qinfo)
2420 {
2421 struct qeth_cmd_buffer *iob;
2422 struct qeth_ipa_cmd *cmd;
2423 int tmp;
2424 int rc;
2425
2426 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2427
2428 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2429 IPA_CMD_ASS_ARP_QUERY_INFO,
2430 sizeof(struct qeth_arp_query_data) - sizeof(char),
2431 prot);
2432 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2433 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2434 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2435 cmd->data.setassparms.data.query_arp.no_entries = 0;
2436 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2437 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2438 qeth_l3_arp_query_cb, (void *)qinfo);
2439 if (rc) {
2440 tmp = rc;
2441 QETH_DBF_MESSAGE(2,
2442 "Error while querying ARP cache on %s: %s "
2443 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2444 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2445 }
2446
2447 return rc;
2448 }
2449
2450 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2451 {
2452 struct qeth_arp_query_info qinfo = {0, };
2453 int rc;
2454
2455 QETH_CARD_TEXT(card, 3, "arpquery");
2456
2457 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2458 IPA_ARP_PROCESSING)) {
2459 QETH_CARD_TEXT(card, 3, "arpqnsup");
2460 rc = -EOPNOTSUPP;
2461 goto out;
2462 }
2463 /* get size of userspace buffer and mask_bits -> 6 bytes */
2464 if (copy_from_user(&qinfo, udata, 6)) {
2465 rc = -EFAULT;
2466 goto out;
2467 }
2468 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2469 if (!qinfo.udata) {
2470 rc = -ENOMEM;
2471 goto out;
2472 }
2473 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2474 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2475 if (rc) {
2476 if (copy_to_user(udata, qinfo.udata, 4))
2477 rc = -EFAULT;
2478 goto free_and_out;
2479 } else {
2480 #ifdef CONFIG_QETH_IPV6
2481 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2482 /* fails in case of GuestLAN QDIO mode */
2483 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2484 &qinfo);
2485 }
2486 #endif
2487 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2488 QETH_CARD_TEXT(card, 4, "qactf");
2489 rc = -EFAULT;
2490 goto free_and_out;
2491 }
2492 QETH_CARD_TEXT_(card, 4, "qacts");
2493 }
2494 free_and_out:
2495 kfree(qinfo.udata);
2496 out:
2497 return rc;
2498 }
2499
2500 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2501 struct qeth_arp_cache_entry *entry)
2502 {
2503 struct qeth_cmd_buffer *iob;
2504 char buf[16];
2505 int tmp;
2506 int rc;
2507
2508 QETH_CARD_TEXT(card, 3, "arpadent");
2509
2510 /*
2511 * currently GuestLAN only supports the ARP assist function
2512 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2513 * thus we say EOPNOTSUPP for this ARP function
2514 */
2515 if (card->info.guestlan)
2516 return -EOPNOTSUPP;
2517 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2518 return -EOPNOTSUPP;
2519 }
2520
2521 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2522 IPA_CMD_ASS_ARP_ADD_ENTRY,
2523 sizeof(struct qeth_arp_cache_entry),
2524 QETH_PROT_IPV4);
2525 rc = qeth_l3_send_setassparms(card, iob,
2526 sizeof(struct qeth_arp_cache_entry),
2527 (unsigned long) entry,
2528 qeth_l3_default_setassparms_cb, NULL);
2529 if (rc) {
2530 tmp = rc;
2531 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2532 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2533 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2534 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2535 }
2536 return rc;
2537 }
2538
2539 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2540 struct qeth_arp_cache_entry *entry)
2541 {
2542 struct qeth_cmd_buffer *iob;
2543 char buf[16] = {0, };
2544 int tmp;
2545 int rc;
2546
2547 QETH_CARD_TEXT(card, 3, "arprment");
2548
2549 /*
2550 * currently GuestLAN only supports the ARP assist function
2551 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2552 * thus we say EOPNOTSUPP for this ARP function
2553 */
2554 if (card->info.guestlan)
2555 return -EOPNOTSUPP;
2556 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2557 return -EOPNOTSUPP;
2558 }
2559 memcpy(buf, entry, 12);
2560 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2561 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2562 12,
2563 QETH_PROT_IPV4);
2564 rc = qeth_l3_send_setassparms(card, iob,
2565 12, (unsigned long)buf,
2566 qeth_l3_default_setassparms_cb, NULL);
2567 if (rc) {
2568 tmp = rc;
2569 memset(buf, 0, 16);
2570 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2571 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2572 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2573 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2574 }
2575 return rc;
2576 }
2577
2578 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2579 {
2580 int rc;
2581 int tmp;
2582
2583 QETH_CARD_TEXT(card, 3, "arpflush");
2584
2585 /*
2586 * currently GuestLAN only supports the ARP assist function
2587 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2588 * thus we say EOPNOTSUPP for this ARP function
2589 */
2590 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2591 return -EOPNOTSUPP;
2592 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2593 return -EOPNOTSUPP;
2594 }
2595 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2596 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2597 if (rc) {
2598 tmp = rc;
2599 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2600 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2601 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2602 }
2603 return rc;
2604 }
2605
2606 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2607 {
2608 struct qeth_card *card = dev->ml_priv;
2609 struct qeth_arp_cache_entry arp_entry;
2610 struct mii_ioctl_data *mii_data;
2611 int rc = 0;
2612
2613 if (!card)
2614 return -ENODEV;
2615
2616 if ((card->state != CARD_STATE_UP) &&
2617 (card->state != CARD_STATE_SOFTSETUP))
2618 return -ENODEV;
2619
2620 switch (cmd) {
2621 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2622 if (!capable(CAP_NET_ADMIN)) {
2623 rc = -EPERM;
2624 break;
2625 }
2626 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2627 break;
2628 case SIOC_QETH_ARP_QUERY_INFO:
2629 if (!capable(CAP_NET_ADMIN)) {
2630 rc = -EPERM;
2631 break;
2632 }
2633 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2634 break;
2635 case SIOC_QETH_ARP_ADD_ENTRY:
2636 if (!capable(CAP_NET_ADMIN)) {
2637 rc = -EPERM;
2638 break;
2639 }
2640 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2641 sizeof(struct qeth_arp_cache_entry)))
2642 rc = -EFAULT;
2643 else
2644 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2645 break;
2646 case SIOC_QETH_ARP_REMOVE_ENTRY:
2647 if (!capable(CAP_NET_ADMIN)) {
2648 rc = -EPERM;
2649 break;
2650 }
2651 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2652 sizeof(struct qeth_arp_cache_entry)))
2653 rc = -EFAULT;
2654 else
2655 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2656 break;
2657 case SIOC_QETH_ARP_FLUSH_CACHE:
2658 if (!capable(CAP_NET_ADMIN)) {
2659 rc = -EPERM;
2660 break;
2661 }
2662 rc = qeth_l3_arp_flush_cache(card);
2663 break;
2664 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2665 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2666 break;
2667 case SIOC_QETH_GET_CARD_TYPE:
2668 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2669 card->info.type == QETH_CARD_TYPE_OSX) &&
2670 !card->info.guestlan)
2671 return 1;
2672 return 0;
2673 break;
2674 case SIOCGMIIPHY:
2675 mii_data = if_mii(rq);
2676 mii_data->phy_id = 0;
2677 break;
2678 case SIOCGMIIREG:
2679 mii_data = if_mii(rq);
2680 if (mii_data->phy_id != 0)
2681 rc = -EINVAL;
2682 else
2683 mii_data->val_out = qeth_mdio_read(dev,
2684 mii_data->phy_id,
2685 mii_data->reg_num);
2686 break;
2687 case SIOC_QETH_QUERY_OAT:
2688 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2689 break;
2690 default:
2691 rc = -EOPNOTSUPP;
2692 }
2693 if (rc)
2694 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2695 return rc;
2696 }
2697
2698 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2699 {
2700 int cast_type = RTN_UNSPEC;
2701 struct neighbour *n = NULL;
2702 struct dst_entry *dst;
2703
2704 rcu_read_lock();
2705 dst = skb_dst(skb);
2706 if (dst)
2707 n = dst_neigh_lookup_skb(dst, skb);
2708 if (n) {
2709 cast_type = n->type;
2710 rcu_read_unlock();
2711 neigh_release(n);
2712 if ((cast_type == RTN_BROADCAST) ||
2713 (cast_type == RTN_MULTICAST) ||
2714 (cast_type == RTN_ANYCAST))
2715 return cast_type;
2716 else
2717 return RTN_UNSPEC;
2718 }
2719 rcu_read_unlock();
2720
2721 /* try something else */
2722 if (skb->protocol == ETH_P_IPV6)
2723 return (skb_network_header(skb)[24] == 0xff) ?
2724 RTN_MULTICAST : 0;
2725 else if (skb->protocol == ETH_P_IP)
2726 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2727 RTN_MULTICAST : 0;
2728 /* ... */
2729 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2730 return RTN_BROADCAST;
2731 else {
2732 u16 hdr_mac;
2733
2734 hdr_mac = *((u16 *)skb->data);
2735 /* tr multicast? */
2736 switch (card->info.link_type) {
2737 case QETH_LINK_TYPE_HSTR:
2738 case QETH_LINK_TYPE_LANE_TR:
2739 if ((hdr_mac == QETH_TR_MAC_NC) ||
2740 (hdr_mac == QETH_TR_MAC_C))
2741 return RTN_MULTICAST;
2742 break;
2743 /* eth or so multicast? */
2744 default:
2745 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2746 (hdr_mac == QETH_ETH_MAC_V6))
2747 return RTN_MULTICAST;
2748 }
2749 }
2750 return cast_type;
2751 }
2752
2753 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2754 struct qeth_hdr *hdr, struct sk_buff *skb)
2755 {
2756 char daddr[16];
2757 struct af_iucv_trans_hdr *iucv_hdr;
2758
2759 skb_pull(skb, 14);
2760 card->dev->header_ops->create(skb, card->dev, 0,
2761 card->dev->dev_addr, card->dev->dev_addr,
2762 card->dev->addr_len);
2763 skb_pull(skb, 14);
2764 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2765 memset(hdr, 0, sizeof(struct qeth_hdr));
2766 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2767 hdr->hdr.l3.ext_flags = 0;
2768 hdr->hdr.l3.length = skb->len;
2769 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2770 memset(daddr, 0, sizeof(daddr));
2771 daddr[0] = 0xfe;
2772 daddr[1] = 0x80;
2773 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2774 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2775 }
2776
2777 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2778 struct sk_buff *skb, int ipv, int cast_type)
2779 {
2780 struct dst_entry *dst;
2781
2782 memset(hdr, 0, sizeof(struct qeth_hdr));
2783 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2784 hdr->hdr.l3.ext_flags = 0;
2785
2786 /*
2787 * before we're going to overwrite this location with next hop ip.
2788 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2789 */
2790 if (vlan_tx_tag_present(skb)) {
2791 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2792 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2793 else
2794 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2795 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2796 }
2797
2798 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2799
2800 rcu_read_lock();
2801 dst = skb_dst(skb);
2802 if (ipv == 4) {
2803 struct rtable *rt = (struct rtable *) dst;
2804 __be32 *pkey = &ip_hdr(skb)->daddr;
2805
2806 if (rt->rt_gateway)
2807 pkey = &rt->rt_gateway;
2808
2809 /* IPv4 */
2810 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2811 memset(hdr->hdr.l3.dest_addr, 0, 12);
2812 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2813 } else if (ipv == 6) {
2814 struct rt6_info *rt = (struct rt6_info *) dst;
2815 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2816
2817 if (!ipv6_addr_any(&rt->rt6i_gateway))
2818 pkey = &rt->rt6i_gateway;
2819
2820 /* IPv6 */
2821 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2822 if (card->info.type == QETH_CARD_TYPE_IQD)
2823 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2824 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2825 } else {
2826 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2827 skb->dev->broadcast, 6)) {
2828 /* broadcast? */
2829 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2830 QETH_HDR_PASSTHRU;
2831 } else {
2832 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2833 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2834 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2835 }
2836 }
2837 rcu_read_unlock();
2838 }
2839
2840 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2841 struct qeth_hdr *hdr, struct sk_buff *skb)
2842 {
2843 struct iphdr *iph = ip_hdr(skb);
2844
2845 /* tcph->check contains already the pseudo hdr checksum
2846 * so just set the header flags
2847 */
2848 if (iph->protocol == IPPROTO_UDP)
2849 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2850 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2851 QETH_HDR_EXT_CSUM_HDR_REQ;
2852 iph->check = 0;
2853 if (card->options.performance_stats)
2854 card->perf_stats.tx_csum++;
2855 }
2856
2857 static void qeth_tso_fill_header(struct qeth_card *card,
2858 struct qeth_hdr *qhdr, struct sk_buff *skb)
2859 {
2860 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2861 struct tcphdr *tcph = tcp_hdr(skb);
2862 struct iphdr *iph = ip_hdr(skb);
2863 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2864
2865 /*fix header to TSO values ...*/
2866 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2867 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2868 /*set values which are fix for the first approach ...*/
2869 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2870 hdr->ext.imb_hdr_no = 1;
2871 hdr->ext.hdr_type = 1;
2872 hdr->ext.hdr_version = 1;
2873 hdr->ext.hdr_len = 28;
2874 /*insert non-fix values */
2875 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2876 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2877 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2878 sizeof(struct qeth_hdr_tso));
2879 tcph->check = 0;
2880 if (skb->protocol == ETH_P_IPV6) {
2881 ip6h->payload_len = 0;
2882 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2883 0, IPPROTO_TCP, 0);
2884 } else {
2885 /*OSA want us to set these values ...*/
2886 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2887 0, IPPROTO_TCP, 0);
2888 iph->tot_len = 0;
2889 iph->check = 0;
2890 }
2891 }
2892
2893 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2894 {
2895 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2896 tcp_hdr(skb)->doff * 4;
2897 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2898 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2899 elements += skb_shinfo(skb)->nr_frags;
2900 return elements;
2901 }
2902
2903 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2904 {
2905 int rc;
2906 u16 *tag;
2907 struct qeth_hdr *hdr = NULL;
2908 int elements_needed = 0;
2909 int elems;
2910 struct qeth_card *card = dev->ml_priv;
2911 struct sk_buff *new_skb = NULL;
2912 int ipv = qeth_get_ip_version(skb);
2913 int cast_type = qeth_l3_get_cast_type(card, skb);
2914 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2915 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2916 int tx_bytes = skb->len;
2917 bool large_send;
2918 int data_offset = -1;
2919 int nr_frags;
2920
2921 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2922 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2923 ((card->options.cq == QETH_CQ_ENABLED) &&
2924 (skb->protocol != ETH_P_AF_IUCV)))) ||
2925 card->options.sniffer)
2926 goto tx_drop;
2927
2928 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2929 card->stats.tx_carrier_errors++;
2930 goto tx_drop;
2931 }
2932
2933 if ((cast_type == RTN_BROADCAST) &&
2934 (card->info.broadcast_capable == 0))
2935 goto tx_drop;
2936
2937 if (card->options.performance_stats) {
2938 card->perf_stats.outbound_cnt++;
2939 card->perf_stats.outbound_start_time = qeth_get_micros();
2940 }
2941
2942 large_send = skb_is_gso(skb);
2943
2944 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2945 (skb_shinfo(skb)->nr_frags == 0)) {
2946 new_skb = skb;
2947 if (new_skb->protocol == ETH_P_AF_IUCV)
2948 data_offset = 0;
2949 else
2950 data_offset = ETH_HLEN;
2951 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2952 if (!hdr)
2953 goto tx_drop;
2954 elements_needed++;
2955 } else {
2956 /* create a clone with writeable headroom */
2957 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2958 + VLAN_HLEN);
2959 if (!new_skb)
2960 goto tx_drop;
2961 }
2962
2963 if (card->info.type == QETH_CARD_TYPE_IQD) {
2964 if (data_offset < 0)
2965 skb_pull(new_skb, ETH_HLEN);
2966 } else {
2967 if (ipv == 4) {
2968 skb_pull(new_skb, ETH_HLEN);
2969 }
2970
2971 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2972 skb_push(new_skb, VLAN_HLEN);
2973 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2974 skb_copy_to_linear_data_offset(new_skb, 4,
2975 new_skb->data + 8, 4);
2976 skb_copy_to_linear_data_offset(new_skb, 8,
2977 new_skb->data + 12, 4);
2978 tag = (u16 *)(new_skb->data + 12);
2979 *tag = __constant_htons(ETH_P_8021Q);
2980 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2981 }
2982 }
2983
2984 netif_stop_queue(dev);
2985
2986 /* fix hardware limitation: as long as we do not have sbal
2987 * chaining we can not send long frag lists
2988 */
2989 if (large_send) {
2990 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2991 if (skb_linearize(new_skb))
2992 goto tx_drop;
2993 if (card->options.performance_stats)
2994 card->perf_stats.tx_lin++;
2995 }
2996 }
2997
2998 if (large_send && (cast_type == RTN_UNSPEC)) {
2999 hdr = (struct qeth_hdr *)skb_push(new_skb,
3000 sizeof(struct qeth_hdr_tso));
3001 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3002 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3003 qeth_tso_fill_header(card, hdr, new_skb);
3004 elements_needed++;
3005 } else {
3006 if (data_offset < 0) {
3007 hdr = (struct qeth_hdr *)skb_push(new_skb,
3008 sizeof(struct qeth_hdr));
3009 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3010 cast_type);
3011 } else {
3012 if (new_skb->protocol == ETH_P_AF_IUCV)
3013 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3014 else {
3015 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3016 cast_type);
3017 hdr->hdr.l3.length = new_skb->len - data_offset;
3018 }
3019 }
3020
3021 if (skb->ip_summed == CHECKSUM_PARTIAL)
3022 qeth_l3_hdr_csum(card, hdr, new_skb);
3023 }
3024
3025 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3026 elements_needed);
3027 if (!elems) {
3028 if (data_offset >= 0)
3029 kmem_cache_free(qeth_core_header_cache, hdr);
3030 goto tx_drop;
3031 }
3032 elements_needed += elems;
3033 nr_frags = skb_shinfo(new_skb)->nr_frags;
3034
3035 if (card->info.type != QETH_CARD_TYPE_IQD) {
3036 int len;
3037 if (large_send)
3038 len = ((unsigned long)tcp_hdr(new_skb) +
3039 tcp_hdr(new_skb)->doff * 4) -
3040 (unsigned long)new_skb->data;
3041 else
3042 len = sizeof(struct qeth_hdr_layer3);
3043
3044 if (qeth_hdr_chk_and_bounce(new_skb, len))
3045 goto tx_drop;
3046 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3047 elements_needed);
3048 } else
3049 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3050 elements_needed, data_offset, 0);
3051
3052 if (!rc) {
3053 card->stats.tx_packets++;
3054 card->stats.tx_bytes += tx_bytes;
3055 if (new_skb != skb)
3056 dev_kfree_skb_any(skb);
3057 if (card->options.performance_stats) {
3058 if (large_send) {
3059 card->perf_stats.large_send_bytes += tx_bytes;
3060 card->perf_stats.large_send_cnt++;
3061 }
3062 if (nr_frags) {
3063 card->perf_stats.sg_skbs_sent++;
3064 /* nr_frags + skb->data */
3065 card->perf_stats.sg_frags_sent += nr_frags + 1;
3066 }
3067 }
3068 rc = NETDEV_TX_OK;
3069 } else {
3070 if (data_offset >= 0)
3071 kmem_cache_free(qeth_core_header_cache, hdr);
3072
3073 if (rc == -EBUSY) {
3074 if (new_skb != skb)
3075 dev_kfree_skb_any(new_skb);
3076 return NETDEV_TX_BUSY;
3077 } else
3078 goto tx_drop;
3079 }
3080
3081 netif_wake_queue(dev);
3082 if (card->options.performance_stats)
3083 card->perf_stats.outbound_time += qeth_get_micros() -
3084 card->perf_stats.outbound_start_time;
3085 return rc;
3086
3087 tx_drop:
3088 card->stats.tx_dropped++;
3089 card->stats.tx_errors++;
3090 if ((new_skb != skb) && new_skb)
3091 dev_kfree_skb_any(new_skb);
3092 dev_kfree_skb_any(skb);
3093 netif_wake_queue(dev);
3094 return NETDEV_TX_OK;
3095 }
3096
3097 static int __qeth_l3_open(struct net_device *dev)
3098 {
3099 struct qeth_card *card = dev->ml_priv;
3100 int rc = 0;
3101
3102 QETH_CARD_TEXT(card, 4, "qethopen");
3103 if (card->state == CARD_STATE_UP)
3104 return rc;
3105 if (card->state != CARD_STATE_SOFTSETUP)
3106 return -ENODEV;
3107 card->data.state = CH_STATE_UP;
3108 card->state = CARD_STATE_UP;
3109 netif_start_queue(dev);
3110
3111 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3112 napi_enable(&card->napi);
3113 napi_schedule(&card->napi);
3114 } else
3115 rc = -EIO;
3116 return rc;
3117 }
3118
3119 static int qeth_l3_open(struct net_device *dev)
3120 {
3121 struct qeth_card *card = dev->ml_priv;
3122
3123 QETH_CARD_TEXT(card, 5, "qethope_");
3124 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3125 QETH_CARD_TEXT(card, 3, "openREC");
3126 return -ERESTARTSYS;
3127 }
3128 return __qeth_l3_open(dev);
3129 }
3130
3131 static int qeth_l3_stop(struct net_device *dev)
3132 {
3133 struct qeth_card *card = dev->ml_priv;
3134
3135 QETH_CARD_TEXT(card, 4, "qethstop");
3136 netif_tx_disable(dev);
3137 if (card->state == CARD_STATE_UP) {
3138 card->state = CARD_STATE_SOFTSETUP;
3139 napi_disable(&card->napi);
3140 }
3141 return 0;
3142 }
3143
3144 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3145 netdev_features_t features)
3146 {
3147 struct qeth_card *card = dev->ml_priv;
3148
3149 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3150 features &= ~NETIF_F_IP_CSUM;
3151 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3152 features &= ~NETIF_F_TSO;
3153 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3154 features &= ~NETIF_F_RXCSUM;
3155
3156 return features;
3157 }
3158
3159 static int qeth_l3_set_features(struct net_device *dev,
3160 netdev_features_t features)
3161 {
3162 struct qeth_card *card = dev->ml_priv;
3163 u32 changed = dev->features ^ features;
3164 int err;
3165
3166 if (!(changed & NETIF_F_RXCSUM))
3167 return 0;
3168
3169 if (card->state == CARD_STATE_DOWN ||
3170 card->state == CARD_STATE_RECOVER)
3171 return 0;
3172
3173 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3174 if (err)
3175 dev->features = features ^ NETIF_F_RXCSUM;
3176
3177 return err;
3178 }
3179
3180 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3181 .get_link = ethtool_op_get_link,
3182 .get_strings = qeth_core_get_strings,
3183 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3184 .get_sset_count = qeth_core_get_sset_count,
3185 .get_drvinfo = qeth_core_get_drvinfo,
3186 .get_settings = qeth_core_ethtool_get_settings,
3187 };
3188
3189 /*
3190 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3191 * NOARP on the netdevice is no option because it also turns off neighbor
3192 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3193 * arp resolution but we want the hard header (packet socket will work
3194 * e.g. tcpdump)
3195 */
3196 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3197 {
3198 n->nud_state = NUD_NOARP;
3199 memcpy(n->ha, "FAKELL", 6);
3200 n->output = n->ops->connected_output;
3201 return 0;
3202 }
3203
3204 static int
3205 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3206 {
3207 if (np->tbl->family == AF_INET)
3208 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3209
3210 return 0;
3211 }
3212
3213 static const struct net_device_ops qeth_l3_netdev_ops = {
3214 .ndo_open = qeth_l3_open,
3215 .ndo_stop = qeth_l3_stop,
3216 .ndo_get_stats = qeth_get_stats,
3217 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3218 .ndo_validate_addr = eth_validate_addr,
3219 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3220 .ndo_do_ioctl = qeth_l3_do_ioctl,
3221 .ndo_change_mtu = qeth_change_mtu,
3222 .ndo_fix_features = qeth_l3_fix_features,
3223 .ndo_set_features = qeth_l3_set_features,
3224 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3225 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3226 .ndo_tx_timeout = qeth_tx_timeout,
3227 };
3228
3229 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3230 .ndo_open = qeth_l3_open,
3231 .ndo_stop = qeth_l3_stop,
3232 .ndo_get_stats = qeth_get_stats,
3233 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3234 .ndo_validate_addr = eth_validate_addr,
3235 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3236 .ndo_do_ioctl = qeth_l3_do_ioctl,
3237 .ndo_change_mtu = qeth_change_mtu,
3238 .ndo_fix_features = qeth_l3_fix_features,
3239 .ndo_set_features = qeth_l3_set_features,
3240 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3241 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3242 .ndo_tx_timeout = qeth_tx_timeout,
3243 .ndo_neigh_setup = qeth_l3_neigh_setup,
3244 };
3245
3246 static int qeth_l3_setup_netdev(struct qeth_card *card)
3247 {
3248 if (card->info.type == QETH_CARD_TYPE_OSD ||
3249 card->info.type == QETH_CARD_TYPE_OSX) {
3250 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3251 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3252 pr_info("qeth_l3: ignoring TR device\n");
3253 return -ENODEV;
3254 } else {
3255 card->dev = alloc_etherdev(0);
3256 if (!card->dev)
3257 return -ENODEV;
3258 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3259
3260 /*IPv6 address autoconfiguration stuff*/
3261 qeth_l3_get_unique_id(card);
3262 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3263 card->dev->dev_id = card->info.unique_id &
3264 0xffff;
3265 if (!card->info.guestlan) {
3266 card->dev->hw_features = NETIF_F_SG |
3267 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3268 NETIF_F_TSO;
3269 card->dev->features = NETIF_F_RXCSUM;
3270 }
3271 }
3272 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3273 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3274 if (!card->dev)
3275 return -ENODEV;
3276 card->dev->flags |= IFF_NOARP;
3277 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3278 qeth_l3_iqd_read_initial_mac(card);
3279 if (card->options.hsuid[0])
3280 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3281 } else
3282 return -ENODEV;
3283
3284 card->dev->ml_priv = card;
3285 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3286 card->dev->mtu = card->info.initial_mtu;
3287 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3288 card->dev->features |= NETIF_F_HW_VLAN_TX |
3289 NETIF_F_HW_VLAN_RX |
3290 NETIF_F_HW_VLAN_FILTER;
3291 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3292 card->dev->gso_max_size = 15 * PAGE_SIZE;
3293
3294 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3295 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3296 return register_netdev(card->dev);
3297 }
3298
3299 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3300 {
3301 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3302
3303 qeth_l3_create_device_attributes(&gdev->dev);
3304 card->options.layer2 = 0;
3305 card->info.hwtrap = 0;
3306 return 0;
3307 }
3308
3309 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3310 {
3311 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3312
3313 qeth_l3_remove_device_attributes(&cgdev->dev);
3314
3315 qeth_set_allowed_threads(card, 0, 1);
3316 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3317
3318 if (cgdev->state == CCWGROUP_ONLINE)
3319 qeth_l3_set_offline(cgdev);
3320
3321 if (card->dev) {
3322 unregister_netdev(card->dev);
3323 card->dev = NULL;
3324 }
3325
3326 qeth_l3_clear_ip_list(card, 0);
3327 qeth_l3_clear_ipato_list(card);
3328 return;
3329 }
3330
3331 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3332 {
3333 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3334 int rc = 0;
3335 enum qeth_card_states recover_flag;
3336
3337 BUG_ON(!card);
3338 mutex_lock(&card->discipline_mutex);
3339 mutex_lock(&card->conf_mutex);
3340 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3341 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3342
3343 recover_flag = card->state;
3344 rc = qeth_core_hardsetup_card(card);
3345 if (rc) {
3346 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3347 rc = -ENODEV;
3348 goto out_remove;
3349 }
3350
3351 if (!card->dev && qeth_l3_setup_netdev(card)) {
3352 rc = -ENODEV;
3353 goto out_remove;
3354 }
3355
3356 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3357 if (card->info.hwtrap &&
3358 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3359 card->info.hwtrap = 0;
3360 } else
3361 card->info.hwtrap = 0;
3362
3363 card->state = CARD_STATE_HARDSETUP;
3364 memset(&card->rx, 0, sizeof(struct qeth_rx));
3365 qeth_print_status_message(card);
3366
3367 /* softsetup */
3368 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3369
3370 rc = qeth_send_startlan(card);
3371 if (rc) {
3372 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3373 if (rc == 0xe080) {
3374 dev_warn(&card->gdev->dev,
3375 "The LAN is offline\n");
3376 card->lan_online = 0;
3377 goto contin;
3378 }
3379 rc = -ENODEV;
3380 goto out_remove;
3381 } else
3382 card->lan_online = 1;
3383
3384 contin:
3385 rc = qeth_l3_setadapter_parms(card);
3386 if (rc)
3387 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3388 if (!card->options.sniffer) {
3389 rc = qeth_l3_start_ipassists(card);
3390 if (rc)
3391 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3392 rc = qeth_l3_setrouting_v4(card);
3393 if (rc)
3394 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3395 rc = qeth_l3_setrouting_v6(card);
3396 if (rc)
3397 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3398 }
3399 netif_tx_disable(card->dev);
3400
3401 rc = qeth_init_qdio_queues(card);
3402 if (rc) {
3403 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3404 rc = -ENODEV;
3405 goto out_remove;
3406 }
3407 card->state = CARD_STATE_SOFTSETUP;
3408
3409 qeth_set_allowed_threads(card, 0xffffffff, 0);
3410 qeth_l3_set_ip_addr_list(card);
3411 if (card->lan_online)
3412 netif_carrier_on(card->dev);
3413 else
3414 netif_carrier_off(card->dev);
3415 if (recover_flag == CARD_STATE_RECOVER) {
3416 rtnl_lock();
3417 if (recovery_mode)
3418 __qeth_l3_open(card->dev);
3419 else
3420 dev_open(card->dev);
3421 qeth_l3_set_multicast_list(card->dev);
3422 rtnl_unlock();
3423 }
3424 /* let user_space know that device is online */
3425 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3426 mutex_unlock(&card->conf_mutex);
3427 mutex_unlock(&card->discipline_mutex);
3428 return 0;
3429 out_remove:
3430 qeth_l3_stop_card(card, 0);
3431 ccw_device_set_offline(CARD_DDEV(card));
3432 ccw_device_set_offline(CARD_WDEV(card));
3433 ccw_device_set_offline(CARD_RDEV(card));
3434 if (recover_flag == CARD_STATE_RECOVER)
3435 card->state = CARD_STATE_RECOVER;
3436 else
3437 card->state = CARD_STATE_DOWN;
3438 mutex_unlock(&card->conf_mutex);
3439 mutex_unlock(&card->discipline_mutex);
3440 return rc;
3441 }
3442
3443 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3444 {
3445 return __qeth_l3_set_online(gdev, 0);
3446 }
3447
3448 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3449 int recovery_mode)
3450 {
3451 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3452 int rc = 0, rc2 = 0, rc3 = 0;
3453 enum qeth_card_states recover_flag;
3454
3455 mutex_lock(&card->discipline_mutex);
3456 mutex_lock(&card->conf_mutex);
3457 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3458 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3459
3460 if (card->dev && netif_carrier_ok(card->dev))
3461 netif_carrier_off(card->dev);
3462 recover_flag = card->state;
3463 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3464 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3465 card->info.hwtrap = 1;
3466 }
3467 qeth_l3_stop_card(card, recovery_mode);
3468 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3469 rtnl_lock();
3470 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3471 rtnl_unlock();
3472 }
3473 rc = ccw_device_set_offline(CARD_DDEV(card));
3474 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3475 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3476 if (!rc)
3477 rc = (rc2) ? rc2 : rc3;
3478 if (rc)
3479 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3480 if (recover_flag == CARD_STATE_UP)
3481 card->state = CARD_STATE_RECOVER;
3482 /* let user_space know that device is offline */
3483 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3484 mutex_unlock(&card->conf_mutex);
3485 mutex_unlock(&card->discipline_mutex);
3486 return 0;
3487 }
3488
3489 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3490 {
3491 return __qeth_l3_set_offline(cgdev, 0);
3492 }
3493
3494 static int qeth_l3_recover(void *ptr)
3495 {
3496 struct qeth_card *card;
3497 int rc = 0;
3498
3499 card = (struct qeth_card *) ptr;
3500 QETH_CARD_TEXT(card, 2, "recover1");
3501 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3502 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3503 return 0;
3504 QETH_CARD_TEXT(card, 2, "recover2");
3505 dev_warn(&card->gdev->dev,
3506 "A recovery process has been started for the device\n");
3507 __qeth_l3_set_offline(card->gdev, 1);
3508 rc = __qeth_l3_set_online(card->gdev, 1);
3509 if (!rc)
3510 dev_info(&card->gdev->dev,
3511 "Device successfully recovered!\n");
3512 else {
3513 rtnl_lock();
3514 dev_close(card->dev);
3515 rtnl_unlock();
3516 dev_warn(&card->gdev->dev, "The qeth device driver "
3517 "failed to recover an error on the device\n");
3518 }
3519 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3520 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3521 return 0;
3522 }
3523
3524 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3525 {
3526 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3527 qeth_set_allowed_threads(card, 0, 1);
3528 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3529 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3530 qeth_qdio_clear_card(card, 0);
3531 qeth_clear_qdio_buffers(card);
3532 }
3533
3534 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3535 {
3536 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3537
3538 if (card->dev)
3539 netif_device_detach(card->dev);
3540 qeth_set_allowed_threads(card, 0, 1);
3541 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3542 if (gdev->state == CCWGROUP_OFFLINE)
3543 return 0;
3544 if (card->state == CARD_STATE_UP) {
3545 if (card->info.hwtrap)
3546 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3547 __qeth_l3_set_offline(card->gdev, 1);
3548 } else
3549 __qeth_l3_set_offline(card->gdev, 0);
3550 return 0;
3551 }
3552
3553 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3554 {
3555 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3556 int rc = 0;
3557
3558 if (gdev->state == CCWGROUP_OFFLINE)
3559 goto out;
3560
3561 if (card->state == CARD_STATE_RECOVER) {
3562 rc = __qeth_l3_set_online(card->gdev, 1);
3563 if (rc) {
3564 rtnl_lock();
3565 dev_close(card->dev);
3566 rtnl_unlock();
3567 }
3568 } else
3569 rc = __qeth_l3_set_online(card->gdev, 0);
3570 out:
3571 qeth_set_allowed_threads(card, 0xffffffff, 0);
3572 if (card->dev)
3573 netif_device_attach(card->dev);
3574 if (rc)
3575 dev_warn(&card->gdev->dev, "The qeth device driver "
3576 "failed to recover an error on the device\n");
3577 return rc;
3578 }
3579
3580 struct qeth_discipline qeth_l3_discipline = {
3581 .start_poll = qeth_qdio_start_poll,
3582 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3583 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3584 .recover = qeth_l3_recover,
3585 .setup = qeth_l3_probe_device,
3586 .remove = qeth_l3_remove_device,
3587 .set_online = qeth_l3_set_online,
3588 .set_offline = qeth_l3_set_offline,
3589 .shutdown = qeth_l3_shutdown,
3590 .freeze = qeth_l3_pm_suspend,
3591 .thaw = qeth_l3_pm_resume,
3592 .restore = qeth_l3_pm_resume,
3593 };
3594 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3595
3596 static int qeth_l3_ip_event(struct notifier_block *this,
3597 unsigned long event, void *ptr)
3598 {
3599 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3600 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3601 struct qeth_ipaddr *addr;
3602 struct qeth_card *card;
3603
3604 if (dev_net(dev) != &init_net)
3605 return NOTIFY_DONE;
3606
3607 card = qeth_l3_get_card_from_dev(dev);
3608 if (!card)
3609 return NOTIFY_DONE;
3610 QETH_CARD_TEXT(card, 3, "ipevent");
3611
3612 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3613 if (addr != NULL) {
3614 addr->u.a4.addr = ifa->ifa_address;
3615 addr->u.a4.mask = ifa->ifa_mask;
3616 addr->type = QETH_IP_TYPE_NORMAL;
3617 } else
3618 goto out;
3619
3620 switch (event) {
3621 case NETDEV_UP:
3622 if (!qeth_l3_add_ip(card, addr))
3623 kfree(addr);
3624 break;
3625 case NETDEV_DOWN:
3626 if (!qeth_l3_delete_ip(card, addr))
3627 kfree(addr);
3628 break;
3629 default:
3630 break;
3631 }
3632 qeth_l3_set_ip_addr_list(card);
3633 out:
3634 return NOTIFY_DONE;
3635 }
3636
3637 static struct notifier_block qeth_l3_ip_notifier = {
3638 qeth_l3_ip_event,
3639 NULL,
3640 };
3641
3642 #ifdef CONFIG_QETH_IPV6
3643 /**
3644 * IPv6 event handler
3645 */
3646 static int qeth_l3_ip6_event(struct notifier_block *this,
3647 unsigned long event, void *ptr)
3648 {
3649 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3650 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3651 struct qeth_ipaddr *addr;
3652 struct qeth_card *card;
3653
3654 card = qeth_l3_get_card_from_dev(dev);
3655 if (!card)
3656 return NOTIFY_DONE;
3657 QETH_CARD_TEXT(card, 3, "ip6event");
3658 if (!qeth_is_supported(card, IPA_IPV6))
3659 return NOTIFY_DONE;
3660
3661 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3662 if (addr != NULL) {
3663 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3664 addr->u.a6.pfxlen = ifa->prefix_len;
3665 addr->type = QETH_IP_TYPE_NORMAL;
3666 } else
3667 goto out;
3668
3669 switch (event) {
3670 case NETDEV_UP:
3671 if (!qeth_l3_add_ip(card, addr))
3672 kfree(addr);
3673 break;
3674 case NETDEV_DOWN:
3675 if (!qeth_l3_delete_ip(card, addr))
3676 kfree(addr);
3677 break;
3678 default:
3679 break;
3680 }
3681 qeth_l3_set_ip_addr_list(card);
3682 out:
3683 return NOTIFY_DONE;
3684 }
3685
3686 static struct notifier_block qeth_l3_ip6_notifier = {
3687 qeth_l3_ip6_event,
3688 NULL,
3689 };
3690 #endif
3691
3692 static int qeth_l3_register_notifiers(void)
3693 {
3694 int rc;
3695
3696 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3697 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3698 if (rc)
3699 return rc;
3700 #ifdef CONFIG_QETH_IPV6
3701 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3702 if (rc) {
3703 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3704 return rc;
3705 }
3706 #else
3707 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3708 #endif
3709 return 0;
3710 }
3711
3712 static void qeth_l3_unregister_notifiers(void)
3713 {
3714
3715 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3716 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3717 #ifdef CONFIG_QETH_IPV6
3718 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3719 #endif /* QETH_IPV6 */
3720 }
3721
3722 static int __init qeth_l3_init(void)
3723 {
3724 int rc = 0;
3725
3726 pr_info("register layer 3 discipline\n");
3727 rc = qeth_l3_register_notifiers();
3728 return rc;
3729 }
3730
3731 static void __exit qeth_l3_exit(void)
3732 {
3733 qeth_l3_unregister_notifiers();
3734 pr_info("unregister layer 3 discipline\n");
3735 }
3736
3737 module_init(qeth_l3_init);
3738 module_exit(qeth_l3_exit);
3739 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3740 MODULE_DESCRIPTION("qeth layer 3 discipline");
3741 MODULE_LICENSE("GPL");
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