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Merge remote-tracking branch 'asoc/fix/si476x' into asoc-next
[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 int 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 0;
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 0;
645 case MULTICAST_ROUTER:
646 if (qeth_is_ipafunc_supported(card, prot,
647 IPA_OSA_MC_ROUTER))
648 return 0;
649 default:
650 goto out_inval;
651 }
652 }
653 out_inval:
654 *type = NO_ROUTER;
655 return -EINVAL;
656 }
657
658 int qeth_l3_setrouting_v4(struct qeth_card *card)
659 {
660 int rc;
661
662 QETH_CARD_TEXT(card, 3, "setrtg4");
663
664 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
665 QETH_PROT_IPV4);
666 if (rc)
667 return rc;
668
669 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
670 QETH_PROT_IPV4);
671 if (rc) {
672 card->options.route4.type = NO_ROUTER;
673 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
674 " on %s. Type set to 'no router'.\n", rc,
675 QETH_CARD_IFNAME(card));
676 }
677 return rc;
678 }
679
680 int qeth_l3_setrouting_v6(struct qeth_card *card)
681 {
682 int rc = 0;
683
684 QETH_CARD_TEXT(card, 3, "setrtg6");
685 #ifdef CONFIG_QETH_IPV6
686
687 if (!qeth_is_supported(card, IPA_IPV6))
688 return 0;
689 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
690 QETH_PROT_IPV6);
691 if (rc)
692 return rc;
693
694 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
695 QETH_PROT_IPV6);
696 if (rc) {
697 card->options.route6.type = NO_ROUTER;
698 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
699 " on %s. Type set to 'no router'.\n", rc,
700 QETH_CARD_IFNAME(card));
701 }
702 #endif
703 return rc;
704 }
705
706 /*
707 * IP address takeover related functions
708 */
709 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
710 {
711
712 struct qeth_ipato_entry *ipatoe, *tmp;
713 unsigned long flags;
714
715 spin_lock_irqsave(&card->ip_lock, flags);
716 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
717 list_del(&ipatoe->entry);
718 kfree(ipatoe);
719 }
720 spin_unlock_irqrestore(&card->ip_lock, flags);
721 }
722
723 int qeth_l3_add_ipato_entry(struct qeth_card *card,
724 struct qeth_ipato_entry *new)
725 {
726 struct qeth_ipato_entry *ipatoe;
727 unsigned long flags;
728 int rc = 0;
729
730 QETH_CARD_TEXT(card, 2, "addipato");
731 spin_lock_irqsave(&card->ip_lock, flags);
732 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
733 if (ipatoe->proto != new->proto)
734 continue;
735 if (!memcmp(ipatoe->addr, new->addr,
736 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
737 (ipatoe->mask_bits == new->mask_bits)) {
738 rc = -EEXIST;
739 break;
740 }
741 }
742 if (!rc)
743 list_add_tail(&new->entry, &card->ipato.entries);
744
745 spin_unlock_irqrestore(&card->ip_lock, flags);
746 return rc;
747 }
748
749 void qeth_l3_del_ipato_entry(struct qeth_card *card,
750 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
751 {
752 struct qeth_ipato_entry *ipatoe, *tmp;
753 unsigned long flags;
754
755 QETH_CARD_TEXT(card, 2, "delipato");
756 spin_lock_irqsave(&card->ip_lock, flags);
757 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
758 if (ipatoe->proto != proto)
759 continue;
760 if (!memcmp(ipatoe->addr, addr,
761 (proto == QETH_PROT_IPV4)? 4:16) &&
762 (ipatoe->mask_bits == mask_bits)) {
763 list_del(&ipatoe->entry);
764 kfree(ipatoe);
765 }
766 }
767 spin_unlock_irqrestore(&card->ip_lock, flags);
768 }
769
770 /*
771 * VIPA related functions
772 */
773 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
774 const u8 *addr)
775 {
776 struct qeth_ipaddr *ipaddr;
777 unsigned long flags;
778 int rc = 0;
779
780 ipaddr = qeth_l3_get_addr_buffer(proto);
781 if (ipaddr) {
782 if (proto == QETH_PROT_IPV4) {
783 QETH_CARD_TEXT(card, 2, "addvipa4");
784 memcpy(&ipaddr->u.a4.addr, addr, 4);
785 ipaddr->u.a4.mask = 0;
786 } else if (proto == QETH_PROT_IPV6) {
787 QETH_CARD_TEXT(card, 2, "addvipa6");
788 memcpy(&ipaddr->u.a6.addr, addr, 16);
789 ipaddr->u.a6.pfxlen = 0;
790 }
791 ipaddr->type = QETH_IP_TYPE_VIPA;
792 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
793 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
794 } else
795 return -ENOMEM;
796 spin_lock_irqsave(&card->ip_lock, flags);
797 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
798 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
799 rc = -EEXIST;
800 spin_unlock_irqrestore(&card->ip_lock, flags);
801 if (rc) {
802 kfree(ipaddr);
803 return rc;
804 }
805 if (!qeth_l3_add_ip(card, ipaddr))
806 kfree(ipaddr);
807 qeth_l3_set_ip_addr_list(card);
808 return rc;
809 }
810
811 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
812 const u8 *addr)
813 {
814 struct qeth_ipaddr *ipaddr;
815
816 ipaddr = qeth_l3_get_addr_buffer(proto);
817 if (ipaddr) {
818 if (proto == QETH_PROT_IPV4) {
819 QETH_CARD_TEXT(card, 2, "delvipa4");
820 memcpy(&ipaddr->u.a4.addr, addr, 4);
821 ipaddr->u.a4.mask = 0;
822 } else if (proto == QETH_PROT_IPV6) {
823 QETH_CARD_TEXT(card, 2, "delvipa6");
824 memcpy(&ipaddr->u.a6.addr, addr, 16);
825 ipaddr->u.a6.pfxlen = 0;
826 }
827 ipaddr->type = QETH_IP_TYPE_VIPA;
828 } else
829 return;
830 if (!qeth_l3_delete_ip(card, ipaddr))
831 kfree(ipaddr);
832 qeth_l3_set_ip_addr_list(card);
833 }
834
835 /*
836 * proxy ARP related functions
837 */
838 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
839 const u8 *addr)
840 {
841 struct qeth_ipaddr *ipaddr;
842 unsigned long flags;
843 int rc = 0;
844
845 ipaddr = qeth_l3_get_addr_buffer(proto);
846 if (ipaddr) {
847 if (proto == QETH_PROT_IPV4) {
848 QETH_CARD_TEXT(card, 2, "addrxip4");
849 memcpy(&ipaddr->u.a4.addr, addr, 4);
850 ipaddr->u.a4.mask = 0;
851 } else if (proto == QETH_PROT_IPV6) {
852 QETH_CARD_TEXT(card, 2, "addrxip6");
853 memcpy(&ipaddr->u.a6.addr, addr, 16);
854 ipaddr->u.a6.pfxlen = 0;
855 }
856 ipaddr->type = QETH_IP_TYPE_RXIP;
857 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
858 ipaddr->del_flags = 0;
859 } else
860 return -ENOMEM;
861 spin_lock_irqsave(&card->ip_lock, flags);
862 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
863 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
864 rc = -EEXIST;
865 spin_unlock_irqrestore(&card->ip_lock, flags);
866 if (rc) {
867 kfree(ipaddr);
868 return rc;
869 }
870 if (!qeth_l3_add_ip(card, ipaddr))
871 kfree(ipaddr);
872 qeth_l3_set_ip_addr_list(card);
873 return 0;
874 }
875
876 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
877 const u8 *addr)
878 {
879 struct qeth_ipaddr *ipaddr;
880
881 ipaddr = qeth_l3_get_addr_buffer(proto);
882 if (ipaddr) {
883 if (proto == QETH_PROT_IPV4) {
884 QETH_CARD_TEXT(card, 2, "addrxip4");
885 memcpy(&ipaddr->u.a4.addr, addr, 4);
886 ipaddr->u.a4.mask = 0;
887 } else if (proto == QETH_PROT_IPV6) {
888 QETH_CARD_TEXT(card, 2, "addrxip6");
889 memcpy(&ipaddr->u.a6.addr, addr, 16);
890 ipaddr->u.a6.pfxlen = 0;
891 }
892 ipaddr->type = QETH_IP_TYPE_RXIP;
893 } else
894 return;
895 if (!qeth_l3_delete_ip(card, ipaddr))
896 kfree(ipaddr);
897 qeth_l3_set_ip_addr_list(card);
898 }
899
900 static int qeth_l3_register_addr_entry(struct qeth_card *card,
901 struct qeth_ipaddr *addr)
902 {
903 char buf[50];
904 int rc = 0;
905 int cnt = 3;
906
907 if (addr->proto == QETH_PROT_IPV4) {
908 QETH_CARD_TEXT(card, 2, "setaddr4");
909 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
910 } else if (addr->proto == QETH_PROT_IPV6) {
911 QETH_CARD_TEXT(card, 2, "setaddr6");
912 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
913 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
914 } else {
915 QETH_CARD_TEXT(card, 2, "setaddr?");
916 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
917 }
918 do {
919 if (addr->is_multicast)
920 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
921 else
922 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
923 addr->set_flags);
924 if (rc)
925 QETH_CARD_TEXT(card, 2, "failed");
926 } while ((--cnt > 0) && rc);
927 if (rc) {
928 QETH_CARD_TEXT(card, 2, "FAILED");
929 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
930 dev_warn(&card->gdev->dev,
931 "Registering IP address %s failed\n", buf);
932 }
933 return rc;
934 }
935
936 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
937 struct qeth_ipaddr *addr)
938 {
939 int rc = 0;
940
941 if (addr->proto == QETH_PROT_IPV4) {
942 QETH_CARD_TEXT(card, 2, "deladdr4");
943 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
944 } else if (addr->proto == QETH_PROT_IPV6) {
945 QETH_CARD_TEXT(card, 2, "deladdr6");
946 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
947 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
948 } else {
949 QETH_CARD_TEXT(card, 2, "deladdr?");
950 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
951 }
952 if (addr->is_multicast)
953 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
954 else
955 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
956 addr->del_flags);
957 if (rc)
958 QETH_CARD_TEXT(card, 2, "failed");
959
960 return rc;
961 }
962
963 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
964 {
965 if (cast_type == RTN_MULTICAST)
966 return QETH_CAST_MULTICAST;
967 if (cast_type == RTN_BROADCAST)
968 return QETH_CAST_BROADCAST;
969 return QETH_CAST_UNICAST;
970 }
971
972 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
973 {
974 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
975 if (cast_type == RTN_MULTICAST)
976 return ct | QETH_CAST_MULTICAST;
977 if (cast_type == RTN_ANYCAST)
978 return ct | QETH_CAST_ANYCAST;
979 if (cast_type == RTN_BROADCAST)
980 return ct | QETH_CAST_BROADCAST;
981 return ct | QETH_CAST_UNICAST;
982 }
983
984 static int qeth_l3_setadapter_parms(struct qeth_card *card)
985 {
986 int rc;
987
988 QETH_DBF_TEXT(SETUP, 2, "setadprm");
989
990 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
991 dev_info(&card->gdev->dev,
992 "set adapter parameters not supported.\n");
993 QETH_DBF_TEXT(SETUP, 2, " notsupp");
994 return 0;
995 }
996 rc = qeth_query_setadapterparms(card);
997 if (rc) {
998 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
999 "0x%x\n", dev_name(&card->gdev->dev), rc);
1000 return rc;
1001 }
1002 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1003 rc = qeth_setadpparms_change_macaddr(card);
1004 if (rc)
1005 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1006 " address failed\n");
1007 }
1008
1009 return rc;
1010 }
1011
1012 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1013 struct qeth_reply *reply, unsigned long data)
1014 {
1015 struct qeth_ipa_cmd *cmd;
1016
1017 QETH_CARD_TEXT(card, 4, "defadpcb");
1018
1019 cmd = (struct qeth_ipa_cmd *) data;
1020 if (cmd->hdr.return_code == 0) {
1021 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1022 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1023 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1024 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1025 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1026 }
1027 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1028 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1030 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1031 }
1032 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1033 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1034 card->info.tx_csum_mask =
1035 cmd->data.setassparms.data.flags_32bit;
1036 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1037 }
1038
1039 return 0;
1040 }
1041
1042 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1043 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1044 __u16 len, enum qeth_prot_versions prot)
1045 {
1046 struct qeth_cmd_buffer *iob;
1047 struct qeth_ipa_cmd *cmd;
1048
1049 QETH_CARD_TEXT(card, 4, "getasscm");
1050 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1051
1052 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1053 cmd->data.setassparms.hdr.assist_no = ipa_func;
1054 cmd->data.setassparms.hdr.length = 8 + len;
1055 cmd->data.setassparms.hdr.command_code = cmd_code;
1056 cmd->data.setassparms.hdr.return_code = 0;
1057 cmd->data.setassparms.hdr.seq_no = 0;
1058
1059 return iob;
1060 }
1061
1062 static int qeth_l3_send_setassparms(struct qeth_card *card,
1063 struct qeth_cmd_buffer *iob, __u16 len, long data,
1064 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1065 unsigned long),
1066 void *reply_param)
1067 {
1068 int rc;
1069 struct qeth_ipa_cmd *cmd;
1070
1071 QETH_CARD_TEXT(card, 4, "sendassp");
1072
1073 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1074 if (len <= sizeof(__u32))
1075 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1076 else /* (len > sizeof(__u32)) */
1077 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1078
1079 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1080 return rc;
1081 }
1082
1083 #ifdef CONFIG_QETH_IPV6
1084 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1085 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1086 {
1087 int rc;
1088 struct qeth_cmd_buffer *iob;
1089
1090 QETH_CARD_TEXT(card, 4, "simassp6");
1091 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1092 0, QETH_PROT_IPV6);
1093 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1094 qeth_l3_default_setassparms_cb, NULL);
1095 return rc;
1096 }
1097 #endif
1098
1099 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1100 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1101 {
1102 int rc;
1103 int length = 0;
1104 struct qeth_cmd_buffer *iob;
1105
1106 QETH_CARD_TEXT(card, 4, "simassp4");
1107 if (data)
1108 length = sizeof(__u32);
1109 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1110 length, QETH_PROT_IPV4);
1111 rc = qeth_l3_send_setassparms(card, iob, length, data,
1112 qeth_l3_default_setassparms_cb, NULL);
1113 return rc;
1114 }
1115
1116 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1117 {
1118 int rc;
1119
1120 QETH_CARD_TEXT(card, 3, "ipaarp");
1121
1122 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1123 dev_info(&card->gdev->dev,
1124 "ARP processing not supported on %s!\n",
1125 QETH_CARD_IFNAME(card));
1126 return 0;
1127 }
1128 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1129 IPA_CMD_ASS_START, 0);
1130 if (rc) {
1131 dev_warn(&card->gdev->dev,
1132 "Starting ARP processing support for %s failed\n",
1133 QETH_CARD_IFNAME(card));
1134 }
1135 return rc;
1136 }
1137
1138 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1139 {
1140 int rc;
1141
1142 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1143
1144 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1145 dev_info(&card->gdev->dev,
1146 "Hardware IP fragmentation not supported on %s\n",
1147 QETH_CARD_IFNAME(card));
1148 return -EOPNOTSUPP;
1149 }
1150
1151 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1152 IPA_CMD_ASS_START, 0);
1153 if (rc) {
1154 dev_warn(&card->gdev->dev,
1155 "Starting IP fragmentation support for %s failed\n",
1156 QETH_CARD_IFNAME(card));
1157 } else
1158 dev_info(&card->gdev->dev,
1159 "Hardware IP fragmentation enabled \n");
1160 return rc;
1161 }
1162
1163 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1164 {
1165 int rc;
1166
1167 QETH_CARD_TEXT(card, 3, "stsrcmac");
1168
1169 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1170 dev_info(&card->gdev->dev,
1171 "Inbound source MAC-address not supported on %s\n",
1172 QETH_CARD_IFNAME(card));
1173 return -EOPNOTSUPP;
1174 }
1175
1176 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1177 IPA_CMD_ASS_START, 0);
1178 if (rc)
1179 dev_warn(&card->gdev->dev,
1180 "Starting source MAC-address support for %s failed\n",
1181 QETH_CARD_IFNAME(card));
1182 return rc;
1183 }
1184
1185 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1186 {
1187 int rc = 0;
1188
1189 QETH_CARD_TEXT(card, 3, "strtvlan");
1190
1191 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1192 dev_info(&card->gdev->dev,
1193 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1194 return -EOPNOTSUPP;
1195 }
1196
1197 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1198 IPA_CMD_ASS_START, 0);
1199 if (rc) {
1200 dev_warn(&card->gdev->dev,
1201 "Starting VLAN support for %s failed\n",
1202 QETH_CARD_IFNAME(card));
1203 } else {
1204 dev_info(&card->gdev->dev, "VLAN enabled\n");
1205 }
1206 return rc;
1207 }
1208
1209 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1210 {
1211 int rc;
1212
1213 QETH_CARD_TEXT(card, 3, "stmcast");
1214
1215 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1216 dev_info(&card->gdev->dev,
1217 "Multicast not supported on %s\n",
1218 QETH_CARD_IFNAME(card));
1219 return -EOPNOTSUPP;
1220 }
1221
1222 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1223 IPA_CMD_ASS_START, 0);
1224 if (rc) {
1225 dev_warn(&card->gdev->dev,
1226 "Starting multicast support for %s failed\n",
1227 QETH_CARD_IFNAME(card));
1228 } else {
1229 dev_info(&card->gdev->dev, "Multicast enabled\n");
1230 card->dev->flags |= IFF_MULTICAST;
1231 }
1232 return rc;
1233 }
1234
1235 #ifdef CONFIG_QETH_IPV6
1236 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1237 {
1238 int rc;
1239
1240 QETH_CARD_TEXT(card, 3, "softipv6");
1241
1242 if (card->info.type == QETH_CARD_TYPE_IQD)
1243 goto out;
1244
1245 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1246 if (rc) {
1247 dev_err(&card->gdev->dev,
1248 "Activating IPv6 support for %s failed\n",
1249 QETH_CARD_IFNAME(card));
1250 return rc;
1251 }
1252 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1253 IPA_CMD_ASS_START, 3);
1254 if (rc) {
1255 dev_err(&card->gdev->dev,
1256 "Activating IPv6 support for %s failed\n",
1257 QETH_CARD_IFNAME(card));
1258 return rc;
1259 }
1260 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1261 IPA_CMD_ASS_START);
1262 if (rc) {
1263 dev_err(&card->gdev->dev,
1264 "Activating IPv6 support for %s failed\n",
1265 QETH_CARD_IFNAME(card));
1266 return rc;
1267 }
1268 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1269 IPA_CMD_ASS_START);
1270 if (rc) {
1271 dev_warn(&card->gdev->dev,
1272 "Enabling the passthrough mode for %s failed\n",
1273 QETH_CARD_IFNAME(card));
1274 return rc;
1275 }
1276 out:
1277 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1278 return 0;
1279 }
1280 #endif
1281
1282 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1283 {
1284 int rc = 0;
1285
1286 QETH_CARD_TEXT(card, 3, "strtipv6");
1287
1288 if (!qeth_is_supported(card, IPA_IPV6)) {
1289 dev_info(&card->gdev->dev,
1290 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1291 return 0;
1292 }
1293 #ifdef CONFIG_QETH_IPV6
1294 rc = qeth_l3_softsetup_ipv6(card);
1295 #endif
1296 return rc ;
1297 }
1298
1299 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1300 {
1301 int rc;
1302
1303 QETH_CARD_TEXT(card, 3, "stbrdcst");
1304 card->info.broadcast_capable = 0;
1305 if (!qeth_is_supported(card, IPA_FILTERING)) {
1306 dev_info(&card->gdev->dev,
1307 "Broadcast not supported on %s\n",
1308 QETH_CARD_IFNAME(card));
1309 rc = -EOPNOTSUPP;
1310 goto out;
1311 }
1312 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1313 IPA_CMD_ASS_START, 0);
1314 if (rc) {
1315 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1316 "%s failed\n", QETH_CARD_IFNAME(card));
1317 goto out;
1318 }
1319
1320 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1321 IPA_CMD_ASS_CONFIGURE, 1);
1322 if (rc) {
1323 dev_warn(&card->gdev->dev,
1324 "Setting up broadcast filtering for %s failed\n",
1325 QETH_CARD_IFNAME(card));
1326 goto out;
1327 }
1328 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1329 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1330 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1331 IPA_CMD_ASS_ENABLE, 1);
1332 if (rc) {
1333 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1334 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1335 goto out;
1336 }
1337 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1338 out:
1339 if (card->info.broadcast_capable)
1340 card->dev->flags |= IFF_BROADCAST;
1341 else
1342 card->dev->flags &= ~IFF_BROADCAST;
1343 return rc;
1344 }
1345
1346 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1347 {
1348 int rc;
1349
1350 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1351 IPA_CMD_ASS_START, 0);
1352 if (rc) {
1353 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1354 "failed, using SW checksumming\n",
1355 QETH_CARD_IFNAME(card));
1356 return rc;
1357 }
1358 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1359 IPA_CMD_ASS_ENABLE,
1360 card->info.csum_mask);
1361 if (rc) {
1362 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1363 "failed, using SW checksumming\n",
1364 QETH_CARD_IFNAME(card));
1365 return rc;
1366 }
1367 return 0;
1368 }
1369
1370 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1371 {
1372 int rc = 0;
1373
1374 if (on) {
1375 rc = qeth_l3_send_checksum_command(card);
1376 if (rc)
1377 return -EIO;
1378 dev_info(&card->gdev->dev,
1379 "HW Checksumming (inbound) enabled\n");
1380 } else {
1381 rc = qeth_l3_send_simple_setassparms(card,
1382 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1383 if (rc)
1384 return -EIO;
1385 }
1386
1387 return 0;
1388 }
1389
1390 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1391 {
1392 QETH_CARD_TEXT(card, 3, "strtcsum");
1393
1394 if (card->dev->features & NETIF_F_RXCSUM) {
1395 rtnl_lock();
1396 /* force set_features call */
1397 card->dev->features &= ~NETIF_F_RXCSUM;
1398 netdev_update_features(card->dev);
1399 rtnl_unlock();
1400 }
1401 return 0;
1402 }
1403
1404 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1405 {
1406 int rc = 0;
1407
1408 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1409 return rc;
1410 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1411 IPA_CMD_ASS_START, 0);
1412 if (rc)
1413 goto err_out;
1414 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1415 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1416 if (rc)
1417 goto err_out;
1418 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1419 return rc;
1420 err_out:
1421 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1422 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1423 return rc;
1424 }
1425
1426 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1427 {
1428 int rc;
1429
1430 QETH_CARD_TEXT(card, 3, "sttso");
1431
1432 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1433 dev_info(&card->gdev->dev,
1434 "Outbound TSO not supported on %s\n",
1435 QETH_CARD_IFNAME(card));
1436 rc = -EOPNOTSUPP;
1437 } else {
1438 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1439 IPA_CMD_ASS_START, 0);
1440 if (rc)
1441 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1442 "segmentation offload for %s failed\n",
1443 QETH_CARD_IFNAME(card));
1444 else
1445 dev_info(&card->gdev->dev,
1446 "Outbound TSO enabled\n");
1447 }
1448 if (rc)
1449 card->dev->features &= ~NETIF_F_TSO;
1450 return rc;
1451 }
1452
1453 static int qeth_l3_start_ipassists(struct qeth_card *card)
1454 {
1455 QETH_CARD_TEXT(card, 3, "strtipas");
1456
1457 if (qeth_set_access_ctrl_online(card, 0))
1458 return -EIO;
1459 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1460 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1461 qeth_l3_start_ipa_source_mac(card); /* go on*/
1462 qeth_l3_start_ipa_vlan(card); /* go on*/
1463 qeth_l3_start_ipa_multicast(card); /* go on*/
1464 qeth_l3_start_ipa_ipv6(card); /* go on*/
1465 qeth_l3_start_ipa_broadcast(card); /* go on*/
1466 qeth_l3_start_ipa_checksum(card); /* go on*/
1467 qeth_l3_start_ipa_tx_checksum(card);
1468 qeth_l3_start_ipa_tso(card); /* go on*/
1469 return 0;
1470 }
1471
1472 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1473 struct qeth_reply *reply, unsigned long data)
1474 {
1475 struct qeth_ipa_cmd *cmd;
1476
1477 cmd = (struct qeth_ipa_cmd *) data;
1478 if (cmd->hdr.return_code == 0)
1479 memcpy(card->dev->dev_addr,
1480 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1481 else
1482 eth_random_addr(card->dev->dev_addr);
1483
1484 return 0;
1485 }
1486
1487 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1488 {
1489 int rc = 0;
1490 struct qeth_cmd_buffer *iob;
1491 struct qeth_ipa_cmd *cmd;
1492
1493 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1494
1495 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1496 QETH_PROT_IPV6);
1497 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1498 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1499 card->info.unique_id;
1500
1501 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1502 NULL);
1503 return rc;
1504 }
1505
1506 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1507 struct qeth_reply *reply, unsigned long data)
1508 {
1509 struct qeth_ipa_cmd *cmd;
1510
1511 cmd = (struct qeth_ipa_cmd *) data;
1512 if (cmd->hdr.return_code == 0)
1513 card->info.unique_id = *((__u16 *)
1514 &cmd->data.create_destroy_addr.unique_id[6]);
1515 else {
1516 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1517 UNIQUE_ID_NOT_BY_CARD;
1518 dev_warn(&card->gdev->dev, "The network adapter failed to "
1519 "generate a unique ID\n");
1520 }
1521 return 0;
1522 }
1523
1524 static int qeth_l3_get_unique_id(struct qeth_card *card)
1525 {
1526 int rc = 0;
1527 struct qeth_cmd_buffer *iob;
1528 struct qeth_ipa_cmd *cmd;
1529
1530 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1531
1532 if (!qeth_is_supported(card, IPA_IPV6)) {
1533 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1534 UNIQUE_ID_NOT_BY_CARD;
1535 return 0;
1536 }
1537
1538 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1539 QETH_PROT_IPV6);
1540 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1541 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1542 card->info.unique_id;
1543
1544 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1545 return rc;
1546 }
1547
1548 static int
1549 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1550 unsigned long data)
1551 {
1552 struct qeth_ipa_cmd *cmd;
1553 __u16 rc;
1554
1555 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1556
1557 cmd = (struct qeth_ipa_cmd *)data;
1558 rc = cmd->hdr.return_code;
1559 if (rc)
1560 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1561 switch (cmd->data.diagass.action) {
1562 case QETH_DIAGS_CMD_TRACE_QUERY:
1563 break;
1564 case QETH_DIAGS_CMD_TRACE_DISABLE:
1565 switch (rc) {
1566 case 0:
1567 case IPA_RC_INVALID_SUBCMD:
1568 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1569 dev_info(&card->gdev->dev, "The HiperSockets network "
1570 "traffic analyzer is deactivated\n");
1571 break;
1572 default:
1573 break;
1574 }
1575 break;
1576 case QETH_DIAGS_CMD_TRACE_ENABLE:
1577 switch (rc) {
1578 case 0:
1579 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1580 dev_info(&card->gdev->dev, "The HiperSockets network "
1581 "traffic analyzer is activated\n");
1582 break;
1583 case IPA_RC_HARDWARE_AUTH_ERROR:
1584 dev_warn(&card->gdev->dev, "The device is not "
1585 "authorized to run as a HiperSockets network "
1586 "traffic analyzer\n");
1587 break;
1588 case IPA_RC_TRACE_ALREADY_ACTIVE:
1589 dev_warn(&card->gdev->dev, "A HiperSockets "
1590 "network traffic analyzer is already "
1591 "active in the HiperSockets LAN\n");
1592 break;
1593 default:
1594 break;
1595 }
1596 break;
1597 default:
1598 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1599 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1600 }
1601
1602 return 0;
1603 }
1604
1605 static int
1606 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1607 {
1608 struct qeth_cmd_buffer *iob;
1609 struct qeth_ipa_cmd *cmd;
1610
1611 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1612
1613 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1614 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1615 cmd->data.diagass.subcmd_len = 16;
1616 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1617 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1618 cmd->data.diagass.action = diags_cmd;
1619 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1620 }
1621
1622 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1623 struct net_device *dev)
1624 {
1625 ip_eth_mc_map(ipm, mac);
1626 }
1627
1628 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1629 {
1630 struct qeth_ipaddr *ipm;
1631 struct ip_mc_list *im4;
1632 char buf[MAX_ADDR_LEN];
1633
1634 QETH_CARD_TEXT(card, 4, "addmc");
1635 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1636 im4 = rcu_dereference(im4->next_rcu)) {
1637 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1638 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1639 if (!ipm)
1640 continue;
1641 ipm->u.a4.addr = im4->multiaddr;
1642 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1643 ipm->is_multicast = 1;
1644 if (!qeth_l3_add_ip(card, ipm))
1645 kfree(ipm);
1646 }
1647 }
1648
1649 /* called with rcu_read_lock */
1650 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1651 {
1652 struct in_device *in_dev;
1653 u16 vid;
1654
1655 QETH_CARD_TEXT(card, 4, "addmcvl");
1656 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1657 return;
1658
1659 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1660 struct net_device *netdev;
1661
1662 netdev = __vlan_find_dev_deep(card->dev, vid);
1663 if (netdev == NULL ||
1664 !(netdev->flags & IFF_UP))
1665 continue;
1666 in_dev = __in_dev_get_rcu(netdev);
1667 if (!in_dev)
1668 continue;
1669 qeth_l3_add_mc(card, in_dev);
1670 }
1671 }
1672
1673 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1674 {
1675 struct in_device *in4_dev;
1676
1677 QETH_CARD_TEXT(card, 4, "chkmcv4");
1678 rcu_read_lock();
1679 in4_dev = __in_dev_get_rcu(card->dev);
1680 if (in4_dev == NULL)
1681 goto unlock;
1682 qeth_l3_add_mc(card, in4_dev);
1683 qeth_l3_add_vlan_mc(card);
1684 unlock:
1685 rcu_read_unlock();
1686 }
1687
1688 #ifdef CONFIG_QETH_IPV6
1689 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1690 {
1691 struct qeth_ipaddr *ipm;
1692 struct ifmcaddr6 *im6;
1693 char buf[MAX_ADDR_LEN];
1694
1695 QETH_CARD_TEXT(card, 4, "addmc6");
1696 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1697 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1698 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1699 if (!ipm)
1700 continue;
1701 ipm->is_multicast = 1;
1702 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1703 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1704 sizeof(struct in6_addr));
1705 if (!qeth_l3_add_ip(card, ipm))
1706 kfree(ipm);
1707 }
1708 }
1709
1710 /* called with rcu_read_lock */
1711 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1712 {
1713 struct inet6_dev *in_dev;
1714 u16 vid;
1715
1716 QETH_CARD_TEXT(card, 4, "admc6vl");
1717 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1718 return;
1719
1720 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1721 struct net_device *netdev;
1722
1723 netdev = __vlan_find_dev_deep(card->dev, vid);
1724 if (netdev == NULL ||
1725 !(netdev->flags & IFF_UP))
1726 continue;
1727 in_dev = in6_dev_get(netdev);
1728 if (!in_dev)
1729 continue;
1730 read_lock_bh(&in_dev->lock);
1731 qeth_l3_add_mc6(card, in_dev);
1732 read_unlock_bh(&in_dev->lock);
1733 in6_dev_put(in_dev);
1734 }
1735 }
1736
1737 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1738 {
1739 struct inet6_dev *in6_dev;
1740
1741 QETH_CARD_TEXT(card, 4, "chkmcv6");
1742 if (!qeth_is_supported(card, IPA_IPV6))
1743 return ;
1744 in6_dev = in6_dev_get(card->dev);
1745 if (in6_dev == NULL)
1746 return;
1747 rcu_read_lock();
1748 read_lock_bh(&in6_dev->lock);
1749 qeth_l3_add_mc6(card, in6_dev);
1750 qeth_l3_add_vlan_mc6(card);
1751 read_unlock_bh(&in6_dev->lock);
1752 rcu_read_unlock();
1753 in6_dev_put(in6_dev);
1754 }
1755 #endif /* CONFIG_QETH_IPV6 */
1756
1757 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1758 unsigned short vid)
1759 {
1760 struct in_device *in_dev;
1761 struct in_ifaddr *ifa;
1762 struct qeth_ipaddr *addr;
1763 struct net_device *netdev;
1764
1765 QETH_CARD_TEXT(card, 4, "frvaddr4");
1766
1767 netdev = __vlan_find_dev_deep(card->dev, vid);
1768 if (!netdev)
1769 return;
1770 in_dev = in_dev_get(netdev);
1771 if (!in_dev)
1772 return;
1773 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1774 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1775 if (addr) {
1776 addr->u.a4.addr = ifa->ifa_address;
1777 addr->u.a4.mask = ifa->ifa_mask;
1778 addr->type = QETH_IP_TYPE_NORMAL;
1779 if (!qeth_l3_delete_ip(card, addr))
1780 kfree(addr);
1781 }
1782 }
1783 in_dev_put(in_dev);
1784 }
1785
1786 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1787 unsigned short vid)
1788 {
1789 #ifdef CONFIG_QETH_IPV6
1790 struct inet6_dev *in6_dev;
1791 struct inet6_ifaddr *ifa;
1792 struct qeth_ipaddr *addr;
1793 struct net_device *netdev;
1794
1795 QETH_CARD_TEXT(card, 4, "frvaddr6");
1796
1797 netdev = __vlan_find_dev_deep(card->dev, vid);
1798 if (!netdev)
1799 return;
1800 in6_dev = in6_dev_get(netdev);
1801 if (!in6_dev)
1802 return;
1803 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1804 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1805 if (addr) {
1806 memcpy(&addr->u.a6.addr, &ifa->addr,
1807 sizeof(struct in6_addr));
1808 addr->u.a6.pfxlen = ifa->prefix_len;
1809 addr->type = QETH_IP_TYPE_NORMAL;
1810 if (!qeth_l3_delete_ip(card, addr))
1811 kfree(addr);
1812 }
1813 }
1814 in6_dev_put(in6_dev);
1815 #endif /* CONFIG_QETH_IPV6 */
1816 }
1817
1818 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1819 unsigned short vid)
1820 {
1821 rcu_read_lock();
1822 qeth_l3_free_vlan_addresses4(card, vid);
1823 qeth_l3_free_vlan_addresses6(card, vid);
1824 rcu_read_unlock();
1825 }
1826
1827 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1828 {
1829 struct qeth_card *card = dev->ml_priv;
1830
1831 set_bit(vid, card->active_vlans);
1832 return 0;
1833 }
1834
1835 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1836 {
1837 struct qeth_card *card = dev->ml_priv;
1838 unsigned long flags;
1839
1840 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1841 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1842 QETH_CARD_TEXT(card, 3, "kidREC");
1843 return 0;
1844 }
1845 spin_lock_irqsave(&card->vlanlock, flags);
1846 /* unregister IP addresses of vlan device */
1847 qeth_l3_free_vlan_addresses(card, vid);
1848 clear_bit(vid, card->active_vlans);
1849 spin_unlock_irqrestore(&card->vlanlock, flags);
1850 qeth_l3_set_multicast_list(card->dev);
1851 return 0;
1852 }
1853
1854 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1855 struct sk_buff *skb, struct qeth_hdr *hdr,
1856 unsigned short *vlan_id)
1857 {
1858 __be16 prot;
1859 struct iphdr *ip_hdr;
1860 unsigned char tg_addr[MAX_ADDR_LEN];
1861 int is_vlan = 0;
1862
1863 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1864 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1865 ETH_P_IP);
1866 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1867 case QETH_CAST_MULTICAST:
1868 switch (prot) {
1869 #ifdef CONFIG_QETH_IPV6
1870 case __constant_htons(ETH_P_IPV6):
1871 ndisc_mc_map((struct in6_addr *)
1872 skb->data + 24,
1873 tg_addr, card->dev, 0);
1874 break;
1875 #endif
1876 case __constant_htons(ETH_P_IP):
1877 ip_hdr = (struct iphdr *)skb->data;
1878 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1879 break;
1880 default:
1881 memcpy(tg_addr, card->dev->broadcast,
1882 card->dev->addr_len);
1883 }
1884 card->stats.multicast++;
1885 skb->pkt_type = PACKET_MULTICAST;
1886 break;
1887 case QETH_CAST_BROADCAST:
1888 memcpy(tg_addr, card->dev->broadcast,
1889 card->dev->addr_len);
1890 card->stats.multicast++;
1891 skb->pkt_type = PACKET_BROADCAST;
1892 break;
1893 case QETH_CAST_UNICAST:
1894 case QETH_CAST_ANYCAST:
1895 case QETH_CAST_NOCAST:
1896 default:
1897 if (card->options.sniffer)
1898 skb->pkt_type = PACKET_OTHERHOST;
1899 else
1900 skb->pkt_type = PACKET_HOST;
1901 memcpy(tg_addr, card->dev->dev_addr,
1902 card->dev->addr_len);
1903 }
1904 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1905 card->dev->header_ops->create(skb, card->dev, prot,
1906 tg_addr, &hdr->hdr.l3.dest_addr[2],
1907 card->dev->addr_len);
1908 else
1909 card->dev->header_ops->create(skb, card->dev, prot,
1910 tg_addr, "FAKELL", card->dev->addr_len);
1911 }
1912
1913 skb->protocol = eth_type_trans(skb, card->dev);
1914
1915 if (hdr->hdr.l3.ext_flags &
1916 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1917 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1918 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1919 is_vlan = 1;
1920 }
1921
1922 if (card->dev->features & NETIF_F_RXCSUM) {
1923 if ((hdr->hdr.l3.ext_flags &
1924 (QETH_HDR_EXT_CSUM_HDR_REQ |
1925 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1926 (QETH_HDR_EXT_CSUM_HDR_REQ |
1927 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1928 skb->ip_summed = CHECKSUM_UNNECESSARY;
1929 else
1930 skb->ip_summed = CHECKSUM_NONE;
1931 } else
1932 skb->ip_summed = CHECKSUM_NONE;
1933
1934 return is_vlan;
1935 }
1936
1937 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1938 int budget, int *done)
1939 {
1940 int work_done = 0;
1941 struct sk_buff *skb;
1942 struct qeth_hdr *hdr;
1943 __u16 vlan_tag = 0;
1944 int is_vlan;
1945 unsigned int len;
1946 __u16 magic;
1947
1948 *done = 0;
1949 WARN_ON_ONCE(!budget);
1950 while (budget) {
1951 skb = qeth_core_get_next_skb(card,
1952 &card->qdio.in_q->bufs[card->rx.b_index],
1953 &card->rx.b_element, &card->rx.e_offset, &hdr);
1954 if (!skb) {
1955 *done = 1;
1956 break;
1957 }
1958 skb->dev = card->dev;
1959 switch (hdr->hdr.l3.id) {
1960 case QETH_HEADER_TYPE_LAYER3:
1961 magic = *(__u16 *)skb->data;
1962 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1963 (magic == ETH_P_AF_IUCV)) {
1964 skb->protocol = ETH_P_AF_IUCV;
1965 skb->pkt_type = PACKET_HOST;
1966 skb->mac_header = NET_SKB_PAD;
1967 skb->dev = card->dev;
1968 len = skb->len;
1969 card->dev->header_ops->create(skb, card->dev, 0,
1970 card->dev->dev_addr, "FAKELL",
1971 card->dev->addr_len);
1972 netif_receive_skb(skb);
1973 } else {
1974 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1975 &vlan_tag);
1976 len = skb->len;
1977 if (is_vlan && !card->options.sniffer)
1978 __vlan_hwaccel_put_tag(skb, vlan_tag);
1979 napi_gro_receive(&card->napi, skb);
1980 }
1981 break;
1982 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1983 skb->pkt_type = PACKET_HOST;
1984 skb->protocol = eth_type_trans(skb, skb->dev);
1985 len = skb->len;
1986 netif_receive_skb(skb);
1987 break;
1988 default:
1989 dev_kfree_skb_any(skb);
1990 QETH_CARD_TEXT(card, 3, "inbunkno");
1991 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1992 continue;
1993 }
1994 work_done++;
1995 budget--;
1996 card->stats.rx_packets++;
1997 card->stats.rx_bytes += len;
1998 }
1999 return work_done;
2000 }
2001
2002 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2003 {
2004 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2005 int work_done = 0;
2006 struct qeth_qdio_buffer *buffer;
2007 int done;
2008 int new_budget = budget;
2009
2010 if (card->options.performance_stats) {
2011 card->perf_stats.inbound_cnt++;
2012 card->perf_stats.inbound_start_time = qeth_get_micros();
2013 }
2014
2015 while (1) {
2016 if (!card->rx.b_count) {
2017 card->rx.qdio_err = 0;
2018 card->rx.b_count = qdio_get_next_buffers(
2019 card->data.ccwdev, 0, &card->rx.b_index,
2020 &card->rx.qdio_err);
2021 if (card->rx.b_count <= 0) {
2022 card->rx.b_count = 0;
2023 break;
2024 }
2025 card->rx.b_element =
2026 &card->qdio.in_q->bufs[card->rx.b_index]
2027 .buffer->element[0];
2028 card->rx.e_offset = 0;
2029 }
2030
2031 while (card->rx.b_count) {
2032 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2033 if (!(card->rx.qdio_err &&
2034 qeth_check_qdio_errors(card, buffer->buffer,
2035 card->rx.qdio_err, "qinerr")))
2036 work_done += qeth_l3_process_inbound_buffer(
2037 card, new_budget, &done);
2038 else
2039 done = 1;
2040
2041 if (done) {
2042 if (card->options.performance_stats)
2043 card->perf_stats.bufs_rec++;
2044 qeth_put_buffer_pool_entry(card,
2045 buffer->pool_entry);
2046 qeth_queue_input_buffer(card, card->rx.b_index);
2047 card->rx.b_count--;
2048 if (card->rx.b_count) {
2049 card->rx.b_index =
2050 (card->rx.b_index + 1) %
2051 QDIO_MAX_BUFFERS_PER_Q;
2052 card->rx.b_element =
2053 &card->qdio.in_q
2054 ->bufs[card->rx.b_index]
2055 .buffer->element[0];
2056 card->rx.e_offset = 0;
2057 }
2058 }
2059
2060 if (work_done >= budget)
2061 goto out;
2062 else
2063 new_budget = budget - work_done;
2064 }
2065 }
2066
2067 napi_complete(napi);
2068 if (qdio_start_irq(card->data.ccwdev, 0))
2069 napi_schedule(&card->napi);
2070 out:
2071 if (card->options.performance_stats)
2072 card->perf_stats.inbound_time += qeth_get_micros() -
2073 card->perf_stats.inbound_start_time;
2074 return work_done;
2075 }
2076
2077 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2078 struct qeth_card *card)
2079 {
2080 int rc = 0;
2081 u16 vid;
2082
2083 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2084 struct net_device *netdev;
2085
2086 rcu_read_lock();
2087 netdev = __vlan_find_dev_deep(card->dev, vid);
2088 rcu_read_unlock();
2089 if (netdev == dev) {
2090 rc = QETH_VLAN_CARD;
2091 break;
2092 }
2093 }
2094
2095 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2096 return 0;
2097
2098 return rc;
2099 }
2100
2101 static int qeth_l3_verify_dev(struct net_device *dev)
2102 {
2103 struct qeth_card *card;
2104 unsigned long flags;
2105 int rc = 0;
2106
2107 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2108 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2109 if (card->dev == dev) {
2110 rc = QETH_REAL_CARD;
2111 break;
2112 }
2113 rc = qeth_l3_verify_vlan_dev(dev, card);
2114 if (rc)
2115 break;
2116 }
2117 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2118
2119 return rc;
2120 }
2121
2122 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2123 {
2124 struct qeth_card *card = NULL;
2125 int rc;
2126
2127 rc = qeth_l3_verify_dev(dev);
2128 if (rc == QETH_REAL_CARD)
2129 card = dev->ml_priv;
2130 else if (rc == QETH_VLAN_CARD)
2131 card = vlan_dev_real_dev(dev)->ml_priv;
2132 if (card && card->options.layer2)
2133 card = NULL;
2134 if (card)
2135 QETH_CARD_TEXT_(card, 4, "%d", rc);
2136 return card ;
2137 }
2138
2139 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2140 {
2141 int rc = 0;
2142
2143 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2144 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2145
2146 qeth_set_allowed_threads(card, 0, 1);
2147 if (card->options.sniffer &&
2148 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2149 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2150 if (card->read.state == CH_STATE_UP &&
2151 card->write.state == CH_STATE_UP &&
2152 (card->state == CARD_STATE_UP)) {
2153 if (recovery_mode)
2154 qeth_l3_stop(card->dev);
2155 else {
2156 rtnl_lock();
2157 dev_close(card->dev);
2158 rtnl_unlock();
2159 }
2160 card->state = CARD_STATE_SOFTSETUP;
2161 }
2162 if (card->state == CARD_STATE_SOFTSETUP) {
2163 qeth_l3_clear_ip_list(card, 1);
2164 qeth_clear_ipacmd_list(card);
2165 card->state = CARD_STATE_HARDSETUP;
2166 }
2167 if (card->state == CARD_STATE_HARDSETUP) {
2168 qeth_qdio_clear_card(card, 0);
2169 qeth_clear_qdio_buffers(card);
2170 qeth_clear_working_pool_list(card);
2171 card->state = CARD_STATE_DOWN;
2172 }
2173 if (card->state == CARD_STATE_DOWN) {
2174 qeth_clear_cmd_buffers(&card->read);
2175 qeth_clear_cmd_buffers(&card->write);
2176 }
2177 return rc;
2178 }
2179
2180 /*
2181 * test for and Switch promiscuous mode (on or off)
2182 * either for guestlan or HiperSocket Sniffer
2183 */
2184 static void
2185 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2186 {
2187 struct net_device *dev = card->dev;
2188
2189 if (((dev->flags & IFF_PROMISC) &&
2190 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2191 (!(dev->flags & IFF_PROMISC) &&
2192 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2193 return;
2194
2195 if (card->info.guestlan) { /* Guestlan trace */
2196 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2197 qeth_setadp_promisc_mode(card);
2198 } else if (card->options.sniffer && /* HiperSockets trace */
2199 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2200 if (dev->flags & IFF_PROMISC) {
2201 QETH_CARD_TEXT(card, 3, "+promisc");
2202 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2203 } else {
2204 QETH_CARD_TEXT(card, 3, "-promisc");
2205 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2206 }
2207 }
2208 }
2209
2210 static void qeth_l3_set_multicast_list(struct net_device *dev)
2211 {
2212 struct qeth_card *card = dev->ml_priv;
2213
2214 QETH_CARD_TEXT(card, 3, "setmulti");
2215 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2216 (card->state != CARD_STATE_UP))
2217 return;
2218 if (!card->options.sniffer) {
2219 qeth_l3_delete_mc_addresses(card);
2220 qeth_l3_add_multicast_ipv4(card);
2221 #ifdef CONFIG_QETH_IPV6
2222 qeth_l3_add_multicast_ipv6(card);
2223 #endif
2224 qeth_l3_set_ip_addr_list(card);
2225 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2226 return;
2227 }
2228 qeth_l3_handle_promisc_mode(card);
2229 }
2230
2231 static const char *qeth_l3_arp_get_error_cause(int *rc)
2232 {
2233 switch (*rc) {
2234 case QETH_IPA_ARP_RC_FAILED:
2235 *rc = -EIO;
2236 return "operation failed";
2237 case QETH_IPA_ARP_RC_NOTSUPP:
2238 *rc = -EOPNOTSUPP;
2239 return "operation not supported";
2240 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2241 *rc = -EINVAL;
2242 return "argument out of range";
2243 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2244 *rc = -EOPNOTSUPP;
2245 return "query operation not supported";
2246 case QETH_IPA_ARP_RC_Q_NO_DATA:
2247 *rc = -ENOENT;
2248 return "no query data available";
2249 default:
2250 return "unknown error";
2251 }
2252 }
2253
2254 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2255 {
2256 int tmp;
2257 int rc;
2258
2259 QETH_CARD_TEXT(card, 3, "arpstnoe");
2260
2261 /*
2262 * currently GuestLAN only supports the ARP assist function
2263 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2264 * thus we say EOPNOTSUPP for this ARP function
2265 */
2266 if (card->info.guestlan)
2267 return -EOPNOTSUPP;
2268 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2269 return -EOPNOTSUPP;
2270 }
2271 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2272 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2273 no_entries);
2274 if (rc) {
2275 tmp = rc;
2276 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2277 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2278 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2279 }
2280 return rc;
2281 }
2282
2283 static __u32 get_arp_entry_size(struct qeth_card *card,
2284 struct qeth_arp_query_data *qdata,
2285 struct qeth_arp_entrytype *type, __u8 strip_entries)
2286 {
2287 __u32 rc;
2288 __u8 is_hsi;
2289
2290 is_hsi = qdata->reply_bits == 5;
2291 if (type->ip == QETHARP_IP_ADDR_V4) {
2292 QETH_CARD_TEXT(card, 4, "arpev4");
2293 if (strip_entries) {
2294 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2295 sizeof(struct qeth_arp_qi_entry7_short);
2296 } else {
2297 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2298 sizeof(struct qeth_arp_qi_entry7);
2299 }
2300 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2301 QETH_CARD_TEXT(card, 4, "arpev6");
2302 if (strip_entries) {
2303 rc = is_hsi ?
2304 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2305 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2306 } else {
2307 rc = is_hsi ?
2308 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2309 sizeof(struct qeth_arp_qi_entry7_ipv6);
2310 }
2311 } else {
2312 QETH_CARD_TEXT(card, 4, "arpinv");
2313 rc = 0;
2314 }
2315
2316 return rc;
2317 }
2318
2319 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2320 {
2321 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2322 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2323 }
2324
2325 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2326 struct qeth_reply *reply, unsigned long data)
2327 {
2328 struct qeth_ipa_cmd *cmd;
2329 struct qeth_arp_query_data *qdata;
2330 struct qeth_arp_query_info *qinfo;
2331 int i;
2332 int e;
2333 int entrybytes_done;
2334 int stripped_bytes;
2335 __u8 do_strip_entries;
2336
2337 QETH_CARD_TEXT(card, 3, "arpquecb");
2338
2339 qinfo = (struct qeth_arp_query_info *) reply->param;
2340 cmd = (struct qeth_ipa_cmd *) data;
2341 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2342 if (cmd->hdr.return_code) {
2343 QETH_CARD_TEXT(card, 4, "arpcberr");
2344 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2345 return 0;
2346 }
2347 if (cmd->data.setassparms.hdr.return_code) {
2348 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2349 QETH_CARD_TEXT(card, 4, "setaperr");
2350 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2351 return 0;
2352 }
2353 qdata = &cmd->data.setassparms.data.query_arp;
2354 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2355
2356 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2357 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2358 entrybytes_done = 0;
2359 for (e = 0; e < qdata->no_entries; ++e) {
2360 char *cur_entry;
2361 __u32 esize;
2362 struct qeth_arp_entrytype *etype;
2363
2364 cur_entry = &qdata->data + entrybytes_done;
2365 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2366 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2367 QETH_CARD_TEXT(card, 4, "pmis");
2368 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2369 break;
2370 }
2371 esize = get_arp_entry_size(card, qdata, etype,
2372 do_strip_entries);
2373 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2374 if (!esize)
2375 break;
2376
2377 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2378 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2379 cmd->hdr.return_code = IPA_RC_ENOMEM;
2380 goto out_error;
2381 }
2382
2383 memcpy(qinfo->udata + qinfo->udata_offset,
2384 &qdata->data + entrybytes_done + stripped_bytes,
2385 esize);
2386 entrybytes_done += esize + stripped_bytes;
2387 qinfo->udata_offset += esize;
2388 ++qinfo->no_entries;
2389 }
2390 /* check if all replies received ... */
2391 if (cmd->data.setassparms.hdr.seq_no <
2392 cmd->data.setassparms.hdr.number_of_replies)
2393 return 1;
2394 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2395 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2396 /* keep STRIP_ENTRIES flag so the user program can distinguish
2397 * stripped entries from normal ones */
2398 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2399 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2400 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2401 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2402 return 0;
2403 out_error:
2404 i = 0;
2405 memcpy(qinfo->udata, &i, 4);
2406 return 0;
2407 }
2408
2409 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2410 struct qeth_cmd_buffer *iob, int len,
2411 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2412 unsigned long),
2413 void *reply_param)
2414 {
2415 QETH_CARD_TEXT(card, 4, "sendarp");
2416
2417 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2418 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2419 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2420 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2421 reply_cb, reply_param);
2422 }
2423
2424 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2425 enum qeth_prot_versions prot,
2426 struct qeth_arp_query_info *qinfo)
2427 {
2428 struct qeth_cmd_buffer *iob;
2429 struct qeth_ipa_cmd *cmd;
2430 int tmp;
2431 int rc;
2432
2433 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2434
2435 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2436 IPA_CMD_ASS_ARP_QUERY_INFO,
2437 sizeof(struct qeth_arp_query_data) - sizeof(char),
2438 prot);
2439 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2440 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2441 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2442 cmd->data.setassparms.data.query_arp.no_entries = 0;
2443 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2444 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2445 qeth_l3_arp_query_cb, (void *)qinfo);
2446 if (rc) {
2447 tmp = rc;
2448 QETH_DBF_MESSAGE(2,
2449 "Error while querying ARP cache on %s: %s "
2450 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2451 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2452 }
2453
2454 return rc;
2455 }
2456
2457 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2458 {
2459 struct qeth_arp_query_info qinfo = {0, };
2460 int rc;
2461
2462 QETH_CARD_TEXT(card, 3, "arpquery");
2463
2464 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2465 IPA_ARP_PROCESSING)) {
2466 QETH_CARD_TEXT(card, 3, "arpqnsup");
2467 rc = -EOPNOTSUPP;
2468 goto out;
2469 }
2470 /* get size of userspace buffer and mask_bits -> 6 bytes */
2471 if (copy_from_user(&qinfo, udata, 6)) {
2472 rc = -EFAULT;
2473 goto out;
2474 }
2475 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2476 if (!qinfo.udata) {
2477 rc = -ENOMEM;
2478 goto out;
2479 }
2480 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2481 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2482 if (rc) {
2483 if (copy_to_user(udata, qinfo.udata, 4))
2484 rc = -EFAULT;
2485 goto free_and_out;
2486 } else {
2487 #ifdef CONFIG_QETH_IPV6
2488 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2489 /* fails in case of GuestLAN QDIO mode */
2490 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2491 &qinfo);
2492 }
2493 #endif
2494 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2495 QETH_CARD_TEXT(card, 4, "qactf");
2496 rc = -EFAULT;
2497 goto free_and_out;
2498 }
2499 QETH_CARD_TEXT_(card, 4, "qacts");
2500 }
2501 free_and_out:
2502 kfree(qinfo.udata);
2503 out:
2504 return rc;
2505 }
2506
2507 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2508 struct qeth_arp_cache_entry *entry)
2509 {
2510 struct qeth_cmd_buffer *iob;
2511 char buf[16];
2512 int tmp;
2513 int rc;
2514
2515 QETH_CARD_TEXT(card, 3, "arpadent");
2516
2517 /*
2518 * currently GuestLAN only supports the ARP assist function
2519 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2520 * thus we say EOPNOTSUPP for this ARP function
2521 */
2522 if (card->info.guestlan)
2523 return -EOPNOTSUPP;
2524 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2525 return -EOPNOTSUPP;
2526 }
2527
2528 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2529 IPA_CMD_ASS_ARP_ADD_ENTRY,
2530 sizeof(struct qeth_arp_cache_entry),
2531 QETH_PROT_IPV4);
2532 rc = qeth_l3_send_setassparms(card, iob,
2533 sizeof(struct qeth_arp_cache_entry),
2534 (unsigned long) entry,
2535 qeth_l3_default_setassparms_cb, NULL);
2536 if (rc) {
2537 tmp = rc;
2538 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2539 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2540 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2541 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2542 }
2543 return rc;
2544 }
2545
2546 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2547 struct qeth_arp_cache_entry *entry)
2548 {
2549 struct qeth_cmd_buffer *iob;
2550 char buf[16] = {0, };
2551 int tmp;
2552 int rc;
2553
2554 QETH_CARD_TEXT(card, 3, "arprment");
2555
2556 /*
2557 * currently GuestLAN only supports the ARP assist function
2558 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2559 * thus we say EOPNOTSUPP for this ARP function
2560 */
2561 if (card->info.guestlan)
2562 return -EOPNOTSUPP;
2563 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2564 return -EOPNOTSUPP;
2565 }
2566 memcpy(buf, entry, 12);
2567 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2568 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2569 12,
2570 QETH_PROT_IPV4);
2571 rc = qeth_l3_send_setassparms(card, iob,
2572 12, (unsigned long)buf,
2573 qeth_l3_default_setassparms_cb, NULL);
2574 if (rc) {
2575 tmp = rc;
2576 memset(buf, 0, 16);
2577 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2578 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2579 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2580 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2581 }
2582 return rc;
2583 }
2584
2585 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2586 {
2587 int rc;
2588 int tmp;
2589
2590 QETH_CARD_TEXT(card, 3, "arpflush");
2591
2592 /*
2593 * currently GuestLAN only supports the ARP assist function
2594 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2595 * thus we say EOPNOTSUPP for this ARP function
2596 */
2597 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2598 return -EOPNOTSUPP;
2599 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2600 return -EOPNOTSUPP;
2601 }
2602 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2603 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2604 if (rc) {
2605 tmp = rc;
2606 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2607 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2608 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2609 }
2610 return rc;
2611 }
2612
2613 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2614 {
2615 struct qeth_card *card = dev->ml_priv;
2616 struct qeth_arp_cache_entry arp_entry;
2617 struct mii_ioctl_data *mii_data;
2618 int rc = 0;
2619
2620 if (!card)
2621 return -ENODEV;
2622
2623 if ((card->state != CARD_STATE_UP) &&
2624 (card->state != CARD_STATE_SOFTSETUP))
2625 return -ENODEV;
2626
2627 switch (cmd) {
2628 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2629 if (!capable(CAP_NET_ADMIN)) {
2630 rc = -EPERM;
2631 break;
2632 }
2633 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2634 break;
2635 case SIOC_QETH_ARP_QUERY_INFO:
2636 if (!capable(CAP_NET_ADMIN)) {
2637 rc = -EPERM;
2638 break;
2639 }
2640 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2641 break;
2642 case SIOC_QETH_ARP_ADD_ENTRY:
2643 if (!capable(CAP_NET_ADMIN)) {
2644 rc = -EPERM;
2645 break;
2646 }
2647 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2648 sizeof(struct qeth_arp_cache_entry)))
2649 rc = -EFAULT;
2650 else
2651 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2652 break;
2653 case SIOC_QETH_ARP_REMOVE_ENTRY:
2654 if (!capable(CAP_NET_ADMIN)) {
2655 rc = -EPERM;
2656 break;
2657 }
2658 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2659 sizeof(struct qeth_arp_cache_entry)))
2660 rc = -EFAULT;
2661 else
2662 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2663 break;
2664 case SIOC_QETH_ARP_FLUSH_CACHE:
2665 if (!capable(CAP_NET_ADMIN)) {
2666 rc = -EPERM;
2667 break;
2668 }
2669 rc = qeth_l3_arp_flush_cache(card);
2670 break;
2671 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2672 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2673 break;
2674 case SIOC_QETH_GET_CARD_TYPE:
2675 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2676 card->info.type == QETH_CARD_TYPE_OSX) &&
2677 !card->info.guestlan)
2678 return 1;
2679 return 0;
2680 break;
2681 case SIOCGMIIPHY:
2682 mii_data = if_mii(rq);
2683 mii_data->phy_id = 0;
2684 break;
2685 case SIOCGMIIREG:
2686 mii_data = if_mii(rq);
2687 if (mii_data->phy_id != 0)
2688 rc = -EINVAL;
2689 else
2690 mii_data->val_out = qeth_mdio_read(dev,
2691 mii_data->phy_id,
2692 mii_data->reg_num);
2693 break;
2694 case SIOC_QETH_QUERY_OAT:
2695 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2696 break;
2697 default:
2698 rc = -EOPNOTSUPP;
2699 }
2700 if (rc)
2701 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2702 return rc;
2703 }
2704
2705 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2706 {
2707 int cast_type = RTN_UNSPEC;
2708 struct neighbour *n = NULL;
2709 struct dst_entry *dst;
2710
2711 rcu_read_lock();
2712 dst = skb_dst(skb);
2713 if (dst)
2714 n = dst_neigh_lookup_skb(dst, skb);
2715 if (n) {
2716 cast_type = n->type;
2717 rcu_read_unlock();
2718 neigh_release(n);
2719 if ((cast_type == RTN_BROADCAST) ||
2720 (cast_type == RTN_MULTICAST) ||
2721 (cast_type == RTN_ANYCAST))
2722 return cast_type;
2723 else
2724 return RTN_UNSPEC;
2725 }
2726 rcu_read_unlock();
2727
2728 /* try something else */
2729 if (skb->protocol == ETH_P_IPV6)
2730 return (skb_network_header(skb)[24] == 0xff) ?
2731 RTN_MULTICAST : 0;
2732 else if (skb->protocol == ETH_P_IP)
2733 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2734 RTN_MULTICAST : 0;
2735 /* ... */
2736 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2737 return RTN_BROADCAST;
2738 else {
2739 u16 hdr_mac;
2740
2741 hdr_mac = *((u16 *)skb->data);
2742 /* tr multicast? */
2743 switch (card->info.link_type) {
2744 case QETH_LINK_TYPE_HSTR:
2745 case QETH_LINK_TYPE_LANE_TR:
2746 if ((hdr_mac == QETH_TR_MAC_NC) ||
2747 (hdr_mac == QETH_TR_MAC_C))
2748 return RTN_MULTICAST;
2749 break;
2750 /* eth or so multicast? */
2751 default:
2752 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2753 (hdr_mac == QETH_ETH_MAC_V6))
2754 return RTN_MULTICAST;
2755 }
2756 }
2757 return cast_type;
2758 }
2759
2760 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2761 struct qeth_hdr *hdr, struct sk_buff *skb)
2762 {
2763 char daddr[16];
2764 struct af_iucv_trans_hdr *iucv_hdr;
2765
2766 skb_pull(skb, 14);
2767 card->dev->header_ops->create(skb, card->dev, 0,
2768 card->dev->dev_addr, card->dev->dev_addr,
2769 card->dev->addr_len);
2770 skb_pull(skb, 14);
2771 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2772 memset(hdr, 0, sizeof(struct qeth_hdr));
2773 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2774 hdr->hdr.l3.ext_flags = 0;
2775 hdr->hdr.l3.length = skb->len;
2776 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2777 memset(daddr, 0, sizeof(daddr));
2778 daddr[0] = 0xfe;
2779 daddr[1] = 0x80;
2780 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2781 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2782 }
2783
2784 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2785 struct sk_buff *skb, int ipv, int cast_type)
2786 {
2787 struct dst_entry *dst;
2788
2789 memset(hdr, 0, sizeof(struct qeth_hdr));
2790 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2791 hdr->hdr.l3.ext_flags = 0;
2792
2793 /*
2794 * before we're going to overwrite this location with next hop ip.
2795 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2796 */
2797 if (vlan_tx_tag_present(skb)) {
2798 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2799 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2800 else
2801 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2802 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2803 }
2804
2805 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2806
2807 rcu_read_lock();
2808 dst = skb_dst(skb);
2809 if (ipv == 4) {
2810 struct rtable *rt = (struct rtable *) dst;
2811 __be32 *pkey = &ip_hdr(skb)->daddr;
2812
2813 if (rt->rt_gateway)
2814 pkey = &rt->rt_gateway;
2815
2816 /* IPv4 */
2817 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2818 memset(hdr->hdr.l3.dest_addr, 0, 12);
2819 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2820 } else if (ipv == 6) {
2821 struct rt6_info *rt = (struct rt6_info *) dst;
2822 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2823
2824 if (!ipv6_addr_any(&rt->rt6i_gateway))
2825 pkey = &rt->rt6i_gateway;
2826
2827 /* IPv6 */
2828 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2829 if (card->info.type == QETH_CARD_TYPE_IQD)
2830 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2831 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2832 } else {
2833 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2834 skb->dev->broadcast, 6)) {
2835 /* broadcast? */
2836 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2837 QETH_HDR_PASSTHRU;
2838 } else {
2839 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2840 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2841 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2842 }
2843 }
2844 rcu_read_unlock();
2845 }
2846
2847 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2848 struct qeth_hdr *hdr, struct sk_buff *skb)
2849 {
2850 struct iphdr *iph = ip_hdr(skb);
2851
2852 /* tcph->check contains already the pseudo hdr checksum
2853 * so just set the header flags
2854 */
2855 if (iph->protocol == IPPROTO_UDP)
2856 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2857 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2858 QETH_HDR_EXT_CSUM_HDR_REQ;
2859 iph->check = 0;
2860 if (card->options.performance_stats)
2861 card->perf_stats.tx_csum++;
2862 }
2863
2864 static void qeth_tso_fill_header(struct qeth_card *card,
2865 struct qeth_hdr *qhdr, struct sk_buff *skb)
2866 {
2867 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2868 struct tcphdr *tcph = tcp_hdr(skb);
2869 struct iphdr *iph = ip_hdr(skb);
2870 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2871
2872 /*fix header to TSO values ...*/
2873 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2874 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2875 /*set values which are fix for the first approach ...*/
2876 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2877 hdr->ext.imb_hdr_no = 1;
2878 hdr->ext.hdr_type = 1;
2879 hdr->ext.hdr_version = 1;
2880 hdr->ext.hdr_len = 28;
2881 /*insert non-fix values */
2882 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2883 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2884 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2885 sizeof(struct qeth_hdr_tso));
2886 tcph->check = 0;
2887 if (skb->protocol == ETH_P_IPV6) {
2888 ip6h->payload_len = 0;
2889 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2890 0, IPPROTO_TCP, 0);
2891 } else {
2892 /*OSA want us to set these values ...*/
2893 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2894 0, IPPROTO_TCP, 0);
2895 iph->tot_len = 0;
2896 iph->check = 0;
2897 }
2898 }
2899
2900 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2901 {
2902 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2903 tcp_hdr(skb)->doff * 4;
2904 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2905 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2906
2907 elements += qeth_get_elements_for_frags(skb);
2908
2909 return elements;
2910 }
2911
2912 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2913 {
2914 int rc;
2915 u16 *tag;
2916 struct qeth_hdr *hdr = NULL;
2917 int elements_needed = 0;
2918 int elems;
2919 struct qeth_card *card = dev->ml_priv;
2920 struct sk_buff *new_skb = NULL;
2921 int ipv = qeth_get_ip_version(skb);
2922 int cast_type = qeth_l3_get_cast_type(card, skb);
2923 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2924 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2925 int tx_bytes = skb->len;
2926 bool large_send;
2927 int data_offset = -1;
2928 int nr_frags;
2929
2930 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2931 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2932 ((card->options.cq == QETH_CQ_ENABLED) &&
2933 (skb->protocol != ETH_P_AF_IUCV)))) ||
2934 card->options.sniffer)
2935 goto tx_drop;
2936
2937 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2938 card->stats.tx_carrier_errors++;
2939 goto tx_drop;
2940 }
2941
2942 if ((cast_type == RTN_BROADCAST) &&
2943 (card->info.broadcast_capable == 0))
2944 goto tx_drop;
2945
2946 if (card->options.performance_stats) {
2947 card->perf_stats.outbound_cnt++;
2948 card->perf_stats.outbound_start_time = qeth_get_micros();
2949 }
2950
2951 large_send = skb_is_gso(skb);
2952
2953 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2954 (skb_shinfo(skb)->nr_frags == 0)) {
2955 new_skb = skb;
2956 if (new_skb->protocol == ETH_P_AF_IUCV)
2957 data_offset = 0;
2958 else
2959 data_offset = ETH_HLEN;
2960 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2961 if (!hdr)
2962 goto tx_drop;
2963 elements_needed++;
2964 } else {
2965 /* create a clone with writeable headroom */
2966 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2967 + VLAN_HLEN);
2968 if (!new_skb)
2969 goto tx_drop;
2970 }
2971
2972 if (card->info.type == QETH_CARD_TYPE_IQD) {
2973 if (data_offset < 0)
2974 skb_pull(new_skb, ETH_HLEN);
2975 } else {
2976 if (ipv == 4) {
2977 skb_pull(new_skb, ETH_HLEN);
2978 }
2979
2980 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2981 skb_push(new_skb, VLAN_HLEN);
2982 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2983 skb_copy_to_linear_data_offset(new_skb, 4,
2984 new_skb->data + 8, 4);
2985 skb_copy_to_linear_data_offset(new_skb, 8,
2986 new_skb->data + 12, 4);
2987 tag = (u16 *)(new_skb->data + 12);
2988 *tag = __constant_htons(ETH_P_8021Q);
2989 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2990 }
2991 }
2992
2993 netif_stop_queue(dev);
2994
2995 /* fix hardware limitation: as long as we do not have sbal
2996 * chaining we can not send long frag lists
2997 */
2998 if (large_send) {
2999 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3000 if (skb_linearize(new_skb))
3001 goto tx_drop;
3002 if (card->options.performance_stats)
3003 card->perf_stats.tx_lin++;
3004 }
3005 }
3006
3007 if (large_send && (cast_type == RTN_UNSPEC)) {
3008 hdr = (struct qeth_hdr *)skb_push(new_skb,
3009 sizeof(struct qeth_hdr_tso));
3010 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3011 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3012 qeth_tso_fill_header(card, hdr, new_skb);
3013 elements_needed++;
3014 } else {
3015 if (data_offset < 0) {
3016 hdr = (struct qeth_hdr *)skb_push(new_skb,
3017 sizeof(struct qeth_hdr));
3018 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3019 cast_type);
3020 } else {
3021 if (new_skb->protocol == ETH_P_AF_IUCV)
3022 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3023 else {
3024 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3025 cast_type);
3026 hdr->hdr.l3.length = new_skb->len - data_offset;
3027 }
3028 }
3029
3030 if (skb->ip_summed == CHECKSUM_PARTIAL)
3031 qeth_l3_hdr_csum(card, hdr, new_skb);
3032 }
3033
3034 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3035 elements_needed);
3036 if (!elems) {
3037 if (data_offset >= 0)
3038 kmem_cache_free(qeth_core_header_cache, hdr);
3039 goto tx_drop;
3040 }
3041 elements_needed += elems;
3042 nr_frags = skb_shinfo(new_skb)->nr_frags;
3043
3044 if (card->info.type != QETH_CARD_TYPE_IQD) {
3045 int len;
3046 if (large_send)
3047 len = ((unsigned long)tcp_hdr(new_skb) +
3048 tcp_hdr(new_skb)->doff * 4) -
3049 (unsigned long)new_skb->data;
3050 else
3051 len = sizeof(struct qeth_hdr_layer3);
3052
3053 if (qeth_hdr_chk_and_bounce(new_skb, len))
3054 goto tx_drop;
3055 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3056 elements_needed);
3057 } else
3058 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3059 elements_needed, data_offset, 0);
3060
3061 if (!rc) {
3062 card->stats.tx_packets++;
3063 card->stats.tx_bytes += tx_bytes;
3064 if (new_skb != skb)
3065 dev_kfree_skb_any(skb);
3066 if (card->options.performance_stats) {
3067 if (large_send) {
3068 card->perf_stats.large_send_bytes += tx_bytes;
3069 card->perf_stats.large_send_cnt++;
3070 }
3071 if (nr_frags) {
3072 card->perf_stats.sg_skbs_sent++;
3073 /* nr_frags + skb->data */
3074 card->perf_stats.sg_frags_sent += nr_frags + 1;
3075 }
3076 }
3077 rc = NETDEV_TX_OK;
3078 } else {
3079 if (data_offset >= 0)
3080 kmem_cache_free(qeth_core_header_cache, hdr);
3081
3082 if (rc == -EBUSY) {
3083 if (new_skb != skb)
3084 dev_kfree_skb_any(new_skb);
3085 return NETDEV_TX_BUSY;
3086 } else
3087 goto tx_drop;
3088 }
3089
3090 netif_wake_queue(dev);
3091 if (card->options.performance_stats)
3092 card->perf_stats.outbound_time += qeth_get_micros() -
3093 card->perf_stats.outbound_start_time;
3094 return rc;
3095
3096 tx_drop:
3097 card->stats.tx_dropped++;
3098 card->stats.tx_errors++;
3099 if ((new_skb != skb) && new_skb)
3100 dev_kfree_skb_any(new_skb);
3101 dev_kfree_skb_any(skb);
3102 netif_wake_queue(dev);
3103 return NETDEV_TX_OK;
3104 }
3105
3106 static int __qeth_l3_open(struct net_device *dev)
3107 {
3108 struct qeth_card *card = dev->ml_priv;
3109 int rc = 0;
3110
3111 QETH_CARD_TEXT(card, 4, "qethopen");
3112 if (card->state == CARD_STATE_UP)
3113 return rc;
3114 if (card->state != CARD_STATE_SOFTSETUP)
3115 return -ENODEV;
3116 card->data.state = CH_STATE_UP;
3117 card->state = CARD_STATE_UP;
3118 netif_start_queue(dev);
3119
3120 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3121 napi_enable(&card->napi);
3122 napi_schedule(&card->napi);
3123 } else
3124 rc = -EIO;
3125 return rc;
3126 }
3127
3128 static int qeth_l3_open(struct net_device *dev)
3129 {
3130 struct qeth_card *card = dev->ml_priv;
3131
3132 QETH_CARD_TEXT(card, 5, "qethope_");
3133 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3134 QETH_CARD_TEXT(card, 3, "openREC");
3135 return -ERESTARTSYS;
3136 }
3137 return __qeth_l3_open(dev);
3138 }
3139
3140 static int qeth_l3_stop(struct net_device *dev)
3141 {
3142 struct qeth_card *card = dev->ml_priv;
3143
3144 QETH_CARD_TEXT(card, 4, "qethstop");
3145 netif_tx_disable(dev);
3146 if (card->state == CARD_STATE_UP) {
3147 card->state = CARD_STATE_SOFTSETUP;
3148 napi_disable(&card->napi);
3149 }
3150 return 0;
3151 }
3152
3153 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3154 netdev_features_t features)
3155 {
3156 struct qeth_card *card = dev->ml_priv;
3157
3158 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3159 features &= ~NETIF_F_IP_CSUM;
3160 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3161 features &= ~NETIF_F_TSO;
3162 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3163 features &= ~NETIF_F_RXCSUM;
3164
3165 return features;
3166 }
3167
3168 static int qeth_l3_set_features(struct net_device *dev,
3169 netdev_features_t features)
3170 {
3171 struct qeth_card *card = dev->ml_priv;
3172 u32 changed = dev->features ^ features;
3173 int err;
3174
3175 if (!(changed & NETIF_F_RXCSUM))
3176 return 0;
3177
3178 if (card->state == CARD_STATE_DOWN ||
3179 card->state == CARD_STATE_RECOVER)
3180 return 0;
3181
3182 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3183 if (err)
3184 dev->features = features ^ NETIF_F_RXCSUM;
3185
3186 return err;
3187 }
3188
3189 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3190 .get_link = ethtool_op_get_link,
3191 .get_strings = qeth_core_get_strings,
3192 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3193 .get_sset_count = qeth_core_get_sset_count,
3194 .get_drvinfo = qeth_core_get_drvinfo,
3195 .get_settings = qeth_core_ethtool_get_settings,
3196 };
3197
3198 /*
3199 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3200 * NOARP on the netdevice is no option because it also turns off neighbor
3201 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3202 * arp resolution but we want the hard header (packet socket will work
3203 * e.g. tcpdump)
3204 */
3205 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3206 {
3207 n->nud_state = NUD_NOARP;
3208 memcpy(n->ha, "FAKELL", 6);
3209 n->output = n->ops->connected_output;
3210 return 0;
3211 }
3212
3213 static int
3214 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3215 {
3216 if (np->tbl->family == AF_INET)
3217 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3218
3219 return 0;
3220 }
3221
3222 static const struct net_device_ops qeth_l3_netdev_ops = {
3223 .ndo_open = qeth_l3_open,
3224 .ndo_stop = qeth_l3_stop,
3225 .ndo_get_stats = qeth_get_stats,
3226 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3227 .ndo_validate_addr = eth_validate_addr,
3228 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3229 .ndo_do_ioctl = qeth_l3_do_ioctl,
3230 .ndo_change_mtu = qeth_change_mtu,
3231 .ndo_fix_features = qeth_l3_fix_features,
3232 .ndo_set_features = qeth_l3_set_features,
3233 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3234 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3235 .ndo_tx_timeout = qeth_tx_timeout,
3236 };
3237
3238 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3239 .ndo_open = qeth_l3_open,
3240 .ndo_stop = qeth_l3_stop,
3241 .ndo_get_stats = qeth_get_stats,
3242 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3243 .ndo_validate_addr = eth_validate_addr,
3244 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3245 .ndo_do_ioctl = qeth_l3_do_ioctl,
3246 .ndo_change_mtu = qeth_change_mtu,
3247 .ndo_fix_features = qeth_l3_fix_features,
3248 .ndo_set_features = qeth_l3_set_features,
3249 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3250 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3251 .ndo_tx_timeout = qeth_tx_timeout,
3252 .ndo_neigh_setup = qeth_l3_neigh_setup,
3253 };
3254
3255 static int qeth_l3_setup_netdev(struct qeth_card *card)
3256 {
3257 if (card->info.type == QETH_CARD_TYPE_OSD ||
3258 card->info.type == QETH_CARD_TYPE_OSX) {
3259 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3260 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3261 pr_info("qeth_l3: ignoring TR device\n");
3262 return -ENODEV;
3263 } else {
3264 card->dev = alloc_etherdev(0);
3265 if (!card->dev)
3266 return -ENODEV;
3267 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3268
3269 /*IPv6 address autoconfiguration stuff*/
3270 qeth_l3_get_unique_id(card);
3271 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3272 card->dev->dev_id = card->info.unique_id &
3273 0xffff;
3274 if (!card->info.guestlan) {
3275 card->dev->hw_features = NETIF_F_SG |
3276 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3277 NETIF_F_TSO;
3278 card->dev->features = NETIF_F_RXCSUM;
3279 }
3280 }
3281 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3282 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3283 if (!card->dev)
3284 return -ENODEV;
3285 card->dev->flags |= IFF_NOARP;
3286 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3287 qeth_l3_iqd_read_initial_mac(card);
3288 if (card->options.hsuid[0])
3289 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3290 } else
3291 return -ENODEV;
3292
3293 card->dev->ml_priv = card;
3294 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3295 card->dev->mtu = card->info.initial_mtu;
3296 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3297 card->dev->features |= NETIF_F_HW_VLAN_TX |
3298 NETIF_F_HW_VLAN_RX |
3299 NETIF_F_HW_VLAN_FILTER;
3300 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3301 card->dev->gso_max_size = 15 * PAGE_SIZE;
3302
3303 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3304 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3305 return register_netdev(card->dev);
3306 }
3307
3308 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3309 {
3310 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3311
3312 qeth_l3_create_device_attributes(&gdev->dev);
3313 card->options.layer2 = 0;
3314 card->info.hwtrap = 0;
3315 return 0;
3316 }
3317
3318 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3319 {
3320 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3321
3322 qeth_l3_remove_device_attributes(&cgdev->dev);
3323
3324 qeth_set_allowed_threads(card, 0, 1);
3325 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3326
3327 if (cgdev->state == CCWGROUP_ONLINE)
3328 qeth_l3_set_offline(cgdev);
3329
3330 if (card->dev) {
3331 unregister_netdev(card->dev);
3332 card->dev = NULL;
3333 }
3334
3335 qeth_l3_clear_ip_list(card, 0);
3336 qeth_l3_clear_ipato_list(card);
3337 return;
3338 }
3339
3340 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3341 {
3342 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3343 int rc = 0;
3344 enum qeth_card_states recover_flag;
3345
3346 mutex_lock(&card->discipline_mutex);
3347 mutex_lock(&card->conf_mutex);
3348 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3349 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3350
3351 recover_flag = card->state;
3352 rc = qeth_core_hardsetup_card(card);
3353 if (rc) {
3354 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3355 rc = -ENODEV;
3356 goto out_remove;
3357 }
3358
3359 if (!card->dev && qeth_l3_setup_netdev(card)) {
3360 rc = -ENODEV;
3361 goto out_remove;
3362 }
3363
3364 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3365 if (card->info.hwtrap &&
3366 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3367 card->info.hwtrap = 0;
3368 } else
3369 card->info.hwtrap = 0;
3370
3371 card->state = CARD_STATE_HARDSETUP;
3372 memset(&card->rx, 0, sizeof(struct qeth_rx));
3373 qeth_print_status_message(card);
3374
3375 /* softsetup */
3376 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3377
3378 rc = qeth_send_startlan(card);
3379 if (rc) {
3380 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3381 if (rc == 0xe080) {
3382 dev_warn(&card->gdev->dev,
3383 "The LAN is offline\n");
3384 card->lan_online = 0;
3385 goto contin;
3386 }
3387 rc = -ENODEV;
3388 goto out_remove;
3389 } else
3390 card->lan_online = 1;
3391
3392 contin:
3393 rc = qeth_l3_setadapter_parms(card);
3394 if (rc)
3395 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3396 if (!card->options.sniffer) {
3397 rc = qeth_l3_start_ipassists(card);
3398 if (rc) {
3399 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3400 goto out_remove;
3401 }
3402 rc = qeth_l3_setrouting_v4(card);
3403 if (rc)
3404 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3405 rc = qeth_l3_setrouting_v6(card);
3406 if (rc)
3407 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3408 }
3409 netif_tx_disable(card->dev);
3410
3411 rc = qeth_init_qdio_queues(card);
3412 if (rc) {
3413 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3414 rc = -ENODEV;
3415 goto out_remove;
3416 }
3417 card->state = CARD_STATE_SOFTSETUP;
3418
3419 qeth_set_allowed_threads(card, 0xffffffff, 0);
3420 qeth_l3_set_ip_addr_list(card);
3421 if (card->lan_online)
3422 netif_carrier_on(card->dev);
3423 else
3424 netif_carrier_off(card->dev);
3425 if (recover_flag == CARD_STATE_RECOVER) {
3426 rtnl_lock();
3427 if (recovery_mode)
3428 __qeth_l3_open(card->dev);
3429 else
3430 dev_open(card->dev);
3431 qeth_l3_set_multicast_list(card->dev);
3432 rtnl_unlock();
3433 }
3434 qeth_trace_features(card);
3435 /* let user_space know that device is online */
3436 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3437 mutex_unlock(&card->conf_mutex);
3438 mutex_unlock(&card->discipline_mutex);
3439 return 0;
3440 out_remove:
3441 qeth_l3_stop_card(card, 0);
3442 ccw_device_set_offline(CARD_DDEV(card));
3443 ccw_device_set_offline(CARD_WDEV(card));
3444 ccw_device_set_offline(CARD_RDEV(card));
3445 if (recover_flag == CARD_STATE_RECOVER)
3446 card->state = CARD_STATE_RECOVER;
3447 else
3448 card->state = CARD_STATE_DOWN;
3449 mutex_unlock(&card->conf_mutex);
3450 mutex_unlock(&card->discipline_mutex);
3451 return rc;
3452 }
3453
3454 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3455 {
3456 return __qeth_l3_set_online(gdev, 0);
3457 }
3458
3459 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3460 int recovery_mode)
3461 {
3462 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3463 int rc = 0, rc2 = 0, rc3 = 0;
3464 enum qeth_card_states recover_flag;
3465
3466 mutex_lock(&card->discipline_mutex);
3467 mutex_lock(&card->conf_mutex);
3468 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3469 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3470
3471 if (card->dev && netif_carrier_ok(card->dev))
3472 netif_carrier_off(card->dev);
3473 recover_flag = card->state;
3474 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3475 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3476 card->info.hwtrap = 1;
3477 }
3478 qeth_l3_stop_card(card, recovery_mode);
3479 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3480 rtnl_lock();
3481 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3482 rtnl_unlock();
3483 }
3484 rc = ccw_device_set_offline(CARD_DDEV(card));
3485 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3486 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3487 if (!rc)
3488 rc = (rc2) ? rc2 : rc3;
3489 if (rc)
3490 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3491 if (recover_flag == CARD_STATE_UP)
3492 card->state = CARD_STATE_RECOVER;
3493 /* let user_space know that device is offline */
3494 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3495 mutex_unlock(&card->conf_mutex);
3496 mutex_unlock(&card->discipline_mutex);
3497 return 0;
3498 }
3499
3500 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3501 {
3502 return __qeth_l3_set_offline(cgdev, 0);
3503 }
3504
3505 static int qeth_l3_recover(void *ptr)
3506 {
3507 struct qeth_card *card;
3508 int rc = 0;
3509
3510 card = (struct qeth_card *) ptr;
3511 QETH_CARD_TEXT(card, 2, "recover1");
3512 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3513 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3514 return 0;
3515 QETH_CARD_TEXT(card, 2, "recover2");
3516 dev_warn(&card->gdev->dev,
3517 "A recovery process has been started for the device\n");
3518 __qeth_l3_set_offline(card->gdev, 1);
3519 rc = __qeth_l3_set_online(card->gdev, 1);
3520 if (!rc)
3521 dev_info(&card->gdev->dev,
3522 "Device successfully recovered!\n");
3523 else {
3524 qeth_close_dev(card);
3525 dev_warn(&card->gdev->dev, "The qeth device driver "
3526 "failed to recover an error on the device\n");
3527 }
3528 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3529 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3530 return 0;
3531 }
3532
3533 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3534 {
3535 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3536 qeth_set_allowed_threads(card, 0, 1);
3537 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3538 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3539 qeth_qdio_clear_card(card, 0);
3540 qeth_clear_qdio_buffers(card);
3541 }
3542
3543 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3544 {
3545 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3546
3547 if (card->dev)
3548 netif_device_detach(card->dev);
3549 qeth_set_allowed_threads(card, 0, 1);
3550 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3551 if (gdev->state == CCWGROUP_OFFLINE)
3552 return 0;
3553 if (card->state == CARD_STATE_UP) {
3554 if (card->info.hwtrap)
3555 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3556 __qeth_l3_set_offline(card->gdev, 1);
3557 } else
3558 __qeth_l3_set_offline(card->gdev, 0);
3559 return 0;
3560 }
3561
3562 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3563 {
3564 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3565 int rc = 0;
3566
3567 if (gdev->state == CCWGROUP_OFFLINE)
3568 goto out;
3569
3570 if (card->state == CARD_STATE_RECOVER) {
3571 rc = __qeth_l3_set_online(card->gdev, 1);
3572 if (rc) {
3573 rtnl_lock();
3574 dev_close(card->dev);
3575 rtnl_unlock();
3576 }
3577 } else
3578 rc = __qeth_l3_set_online(card->gdev, 0);
3579 out:
3580 qeth_set_allowed_threads(card, 0xffffffff, 0);
3581 if (card->dev)
3582 netif_device_attach(card->dev);
3583 if (rc)
3584 dev_warn(&card->gdev->dev, "The qeth device driver "
3585 "failed to recover an error on the device\n");
3586 return rc;
3587 }
3588
3589 struct qeth_discipline qeth_l3_discipline = {
3590 .start_poll = qeth_qdio_start_poll,
3591 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3592 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3593 .recover = qeth_l3_recover,
3594 .setup = qeth_l3_probe_device,
3595 .remove = qeth_l3_remove_device,
3596 .set_online = qeth_l3_set_online,
3597 .set_offline = qeth_l3_set_offline,
3598 .shutdown = qeth_l3_shutdown,
3599 .freeze = qeth_l3_pm_suspend,
3600 .thaw = qeth_l3_pm_resume,
3601 .restore = qeth_l3_pm_resume,
3602 };
3603 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3604
3605 static int qeth_l3_ip_event(struct notifier_block *this,
3606 unsigned long event, void *ptr)
3607 {
3608 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3609 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3610 struct qeth_ipaddr *addr;
3611 struct qeth_card *card;
3612
3613 if (dev_net(dev) != &init_net)
3614 return NOTIFY_DONE;
3615
3616 card = qeth_l3_get_card_from_dev(dev);
3617 if (!card)
3618 return NOTIFY_DONE;
3619 QETH_CARD_TEXT(card, 3, "ipevent");
3620
3621 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3622 if (addr != NULL) {
3623 addr->u.a4.addr = ifa->ifa_address;
3624 addr->u.a4.mask = ifa->ifa_mask;
3625 addr->type = QETH_IP_TYPE_NORMAL;
3626 } else
3627 goto out;
3628
3629 switch (event) {
3630 case NETDEV_UP:
3631 if (!qeth_l3_add_ip(card, addr))
3632 kfree(addr);
3633 break;
3634 case NETDEV_DOWN:
3635 if (!qeth_l3_delete_ip(card, addr))
3636 kfree(addr);
3637 break;
3638 default:
3639 break;
3640 }
3641 qeth_l3_set_ip_addr_list(card);
3642 out:
3643 return NOTIFY_DONE;
3644 }
3645
3646 static struct notifier_block qeth_l3_ip_notifier = {
3647 qeth_l3_ip_event,
3648 NULL,
3649 };
3650
3651 #ifdef CONFIG_QETH_IPV6
3652 /**
3653 * IPv6 event handler
3654 */
3655 static int qeth_l3_ip6_event(struct notifier_block *this,
3656 unsigned long event, void *ptr)
3657 {
3658 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3659 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3660 struct qeth_ipaddr *addr;
3661 struct qeth_card *card;
3662
3663 card = qeth_l3_get_card_from_dev(dev);
3664 if (!card)
3665 return NOTIFY_DONE;
3666 QETH_CARD_TEXT(card, 3, "ip6event");
3667 if (!qeth_is_supported(card, IPA_IPV6))
3668 return NOTIFY_DONE;
3669
3670 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3671 if (addr != NULL) {
3672 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3673 addr->u.a6.pfxlen = ifa->prefix_len;
3674 addr->type = QETH_IP_TYPE_NORMAL;
3675 } else
3676 goto out;
3677
3678 switch (event) {
3679 case NETDEV_UP:
3680 if (!qeth_l3_add_ip(card, addr))
3681 kfree(addr);
3682 break;
3683 case NETDEV_DOWN:
3684 if (!qeth_l3_delete_ip(card, addr))
3685 kfree(addr);
3686 break;
3687 default:
3688 break;
3689 }
3690 qeth_l3_set_ip_addr_list(card);
3691 out:
3692 return NOTIFY_DONE;
3693 }
3694
3695 static struct notifier_block qeth_l3_ip6_notifier = {
3696 qeth_l3_ip6_event,
3697 NULL,
3698 };
3699 #endif
3700
3701 static int qeth_l3_register_notifiers(void)
3702 {
3703 int rc;
3704
3705 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3706 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3707 if (rc)
3708 return rc;
3709 #ifdef CONFIG_QETH_IPV6
3710 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3711 if (rc) {
3712 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3713 return rc;
3714 }
3715 #else
3716 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3717 #endif
3718 return 0;
3719 }
3720
3721 static void qeth_l3_unregister_notifiers(void)
3722 {
3723
3724 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3725 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3726 #ifdef CONFIG_QETH_IPV6
3727 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3728 #endif /* QETH_IPV6 */
3729 }
3730
3731 static int __init qeth_l3_init(void)
3732 {
3733 int rc = 0;
3734
3735 pr_info("register layer 3 discipline\n");
3736 rc = qeth_l3_register_notifiers();
3737 return rc;
3738 }
3739
3740 static void __exit qeth_l3_exit(void)
3741 {
3742 qeth_l3_unregister_notifiers();
3743 pr_info("unregister layer 3 discipline\n");
3744 }
3745
3746 module_init(qeth_l3_init);
3747 module_exit(qeth_l3_exit);
3748 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3749 MODULE_DESCRIPTION("qeth layer 3 discipline");
3750 MODULE_LICENSE("GPL");
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