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73ac63d901c9e5731dc4a39d658fdb643431ef19
[deliverable/linux.git] / drivers / s390 / net / qeth_l3_main.c
1 /*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/bitops.h>
17 #include <linux/string.h>
18 #include <linux/errno.h>
19 #include <linux/kernel.h>
20 #include <linux/etherdevice.h>
21 #include <linux/mii.h>
22 #include <linux/ip.h>
23 #include <linux/ipv6.h>
24 #include <linux/inetdevice.h>
25 #include <linux/igmp.h>
26 #include <linux/slab.h>
27 #include <linux/if_vlan.h>
28
29 #include <net/ip.h>
30 #include <net/arp.h>
31 #include <net/route.h>
32 #include <net/ip6_fib.h>
33 #include <net/ip6_checksum.h>
34 #include <net/iucv/af_iucv.h>
35
36 #include "qeth_l3.h"
37
38
39 static int qeth_l3_set_offline(struct ccwgroup_device *);
40 static int qeth_l3_recover(void *);
41 static int qeth_l3_stop(struct net_device *);
42 static void qeth_l3_set_multicast_list(struct net_device *);
43 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
44 static int qeth_l3_register_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
48 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
49 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
50
51 static int qeth_l3_isxdigit(char *buf)
52 {
53 while (*buf) {
54 if (!isxdigit(*buf++))
55 return 0;
56 }
57 return 1;
58 }
59
60 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
61 {
62 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
63 }
64
65 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
66 {
67 int count = 0, rc = 0;
68 int in[4];
69 char c;
70
71 rc = sscanf(buf, "%u.%u.%u.%u%c",
72 &in[0], &in[1], &in[2], &in[3], &c);
73 if (rc != 4 && (rc != 5 || c != '\n'))
74 return -EINVAL;
75 for (count = 0; count < 4; count++) {
76 if (in[count] > 255)
77 return -EINVAL;
78 addr[count] = in[count];
79 }
80 return 0;
81 }
82
83 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
84 {
85 sprintf(buf, "%pI6", addr);
86 }
87
88 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
89 {
90 const char *end, *end_tmp, *start;
91 __u16 *in;
92 char num[5];
93 int num2, cnt, out, found, save_cnt;
94 unsigned short in_tmp[8] = {0, };
95
96 cnt = out = found = save_cnt = num2 = 0;
97 end = start = buf;
98 in = (__u16 *) addr;
99 memset(in, 0, 16);
100 while (*end) {
101 end = strchr(start, ':');
102 if (end == NULL) {
103 end = buf + strlen(buf);
104 end_tmp = strchr(start, '\n');
105 if (end_tmp != NULL)
106 end = end_tmp;
107 out = 1;
108 }
109 if ((end - start)) {
110 memset(num, 0, 5);
111 if ((end - start) > 4)
112 return -EINVAL;
113 memcpy(num, start, end - start);
114 if (!qeth_l3_isxdigit(num))
115 return -EINVAL;
116 sscanf(start, "%x", &num2);
117 if (found)
118 in_tmp[save_cnt++] = num2;
119 else
120 in[cnt++] = num2;
121 if (out)
122 break;
123 } else {
124 if (found)
125 return -EINVAL;
126 found = 1;
127 }
128 start = ++end;
129 }
130 if (cnt + save_cnt > 8)
131 return -EINVAL;
132 cnt = 7;
133 while (save_cnt)
134 in[cnt--] = in_tmp[--save_cnt];
135 return 0;
136 }
137
138 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
139 char *buf)
140 {
141 if (proto == QETH_PROT_IPV4)
142 qeth_l3_ipaddr4_to_string(addr, buf);
143 else if (proto == QETH_PROT_IPV6)
144 qeth_l3_ipaddr6_to_string(addr, buf);
145 }
146
147 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
148 __u8 *addr)
149 {
150 if (proto == QETH_PROT_IPV4)
151 return qeth_l3_string_to_ipaddr4(buf, addr);
152 else if (proto == QETH_PROT_IPV6)
153 return qeth_l3_string_to_ipaddr6(buf, addr);
154 else
155 return -EINVAL;
156 }
157
158 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
159 {
160 int i, j;
161 u8 octet;
162
163 for (i = 0; i < len; ++i) {
164 octet = addr[i];
165 for (j = 7; j >= 0; --j) {
166 bits[i*8 + j] = octet & 1;
167 octet >>= 1;
168 }
169 }
170 }
171
172 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
173 struct qeth_ipaddr *addr)
174 {
175 struct qeth_ipato_entry *ipatoe;
176 u8 addr_bits[128] = {0, };
177 u8 ipatoe_bits[128] = {0, };
178 int rc = 0;
179
180 if (!card->ipato.enabled)
181 return 0;
182
183 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
184 (addr->proto == QETH_PROT_IPV4)? 4:16);
185 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
186 if (addr->proto != ipatoe->proto)
187 continue;
188 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
189 (ipatoe->proto == QETH_PROT_IPV4) ?
190 4 : 16);
191 if (addr->proto == QETH_PROT_IPV4)
192 rc = !memcmp(addr_bits, ipatoe_bits,
193 min(32, ipatoe->mask_bits));
194 else
195 rc = !memcmp(addr_bits, ipatoe_bits,
196 min(128, ipatoe->mask_bits));
197 if (rc)
198 break;
199 }
200 /* invert? */
201 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
202 rc = !rc;
203 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
204 rc = !rc;
205
206 return rc;
207 }
208
209 /*
210 * Add IP to be added to todo list. If there is already an "add todo"
211 * in this list we just incremenent the reference count.
212 * Returns 0 if we just incremented reference count.
213 */
214 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
215 struct qeth_ipaddr *addr, int add)
216 {
217 struct qeth_ipaddr *tmp, *t;
218 int found = 0;
219
220 if (card->options.sniffer)
221 return 0;
222 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
223 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
224 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
225 return 0;
226 if ((tmp->proto == QETH_PROT_IPV4) &&
227 (addr->proto == QETH_PROT_IPV4) &&
228 (tmp->type == addr->type) &&
229 (tmp->is_multicast == addr->is_multicast) &&
230 (tmp->u.a4.addr == addr->u.a4.addr) &&
231 (tmp->u.a4.mask == addr->u.a4.mask)) {
232 found = 1;
233 break;
234 }
235 if ((tmp->proto == QETH_PROT_IPV6) &&
236 (addr->proto == QETH_PROT_IPV6) &&
237 (tmp->type == addr->type) &&
238 (tmp->is_multicast == addr->is_multicast) &&
239 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
240 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
241 sizeof(struct in6_addr)) == 0)) {
242 found = 1;
243 break;
244 }
245 }
246 if (found) {
247 if (addr->users != 0)
248 tmp->users += addr->users;
249 else
250 tmp->users += add ? 1 : -1;
251 if (tmp->users == 0) {
252 list_del(&tmp->entry);
253 kfree(tmp);
254 }
255 return 0;
256 } else {
257 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
258 list_add(&addr->entry, card->ip_tbd_list);
259 else {
260 if (addr->users == 0)
261 addr->users += add ? 1 : -1;
262 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
263 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
264 QETH_CARD_TEXT(card, 2, "tkovaddr");
265 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
266 }
267 list_add_tail(&addr->entry, card->ip_tbd_list);
268 }
269 return 1;
270 }
271 }
272
273 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
274 {
275 unsigned long flags;
276 int rc = 0;
277
278 QETH_CARD_TEXT(card, 4, "delip");
279
280 if (addr->proto == QETH_PROT_IPV4)
281 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
282 else {
283 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
284 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
285 }
286 spin_lock_irqsave(&card->ip_lock, flags);
287 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
288 spin_unlock_irqrestore(&card->ip_lock, flags);
289 return rc;
290 }
291
292 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
293 {
294 unsigned long flags;
295 int rc = 0;
296
297 QETH_CARD_TEXT(card, 4, "addip");
298 if (addr->proto == QETH_PROT_IPV4)
299 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
300 else {
301 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
302 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
303 }
304 spin_lock_irqsave(&card->ip_lock, flags);
305 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
306 spin_unlock_irqrestore(&card->ip_lock, flags);
307 return rc;
308 }
309
310
311 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
312 enum qeth_prot_versions prot)
313 {
314 struct qeth_ipaddr *addr;
315
316 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
317 if (addr == NULL) {
318 return NULL;
319 }
320 addr->type = QETH_IP_TYPE_NORMAL;
321 addr->proto = prot;
322 return addr;
323 }
324
325 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
326 {
327 struct qeth_ipaddr *iptodo;
328 unsigned long flags;
329
330 QETH_CARD_TEXT(card, 4, "delmc");
331 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
332 if (!iptodo) {
333 QETH_CARD_TEXT(card, 2, "dmcnomem");
334 return;
335 }
336 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
337 spin_lock_irqsave(&card->ip_lock, flags);
338 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
339 kfree(iptodo);
340 spin_unlock_irqrestore(&card->ip_lock, flags);
341 }
342
343 /*
344 * Add/remove address to/from card's ip list, i.e. try to add or remove
345 * reference to/from an IP address that is already registered on the card.
346 * Returns:
347 * 0 address was on card and its reference count has been adjusted,
348 * but is still > 0, so nothing has to be done
349 * also returns 0 if card was not on card and the todo was to delete
350 * the address -> there is also nothing to be done
351 * 1 address was not on card and the todo is to add it to the card's ip
352 * list
353 * -1 address was on card and its reference count has been decremented
354 * to <= 0 by the todo -> address must be removed from card
355 */
356 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
357 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
358 {
359 struct qeth_ipaddr *addr;
360 int found = 0;
361
362 list_for_each_entry(addr, &card->ip_list, entry) {
363 if ((addr->proto == QETH_PROT_IPV4) &&
364 (todo->proto == QETH_PROT_IPV4) &&
365 (addr->type == todo->type) &&
366 (addr->u.a4.addr == todo->u.a4.addr) &&
367 (addr->u.a4.mask == todo->u.a4.mask)) {
368 found = 1;
369 break;
370 }
371 if ((addr->proto == QETH_PROT_IPV6) &&
372 (todo->proto == QETH_PROT_IPV6) &&
373 (addr->type == todo->type) &&
374 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
375 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
376 sizeof(struct in6_addr)) == 0)) {
377 found = 1;
378 break;
379 }
380 }
381 if (found) {
382 addr->users += todo->users;
383 if (addr->users <= 0) {
384 *__addr = addr;
385 return -1;
386 } else {
387 /* for VIPA and RXIP limit refcount to 1 */
388 if (addr->type != QETH_IP_TYPE_NORMAL)
389 addr->users = 1;
390 return 0;
391 }
392 }
393 if (todo->users > 0) {
394 /* for VIPA and RXIP limit refcount to 1 */
395 if (todo->type != QETH_IP_TYPE_NORMAL)
396 todo->users = 1;
397 return 1;
398 } else
399 return 0;
400 }
401
402 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
403 unsigned long *flags)
404 {
405 struct list_head fail_list;
406 struct qeth_ipaddr *addr, *tmp;
407 int rc;
408
409 INIT_LIST_HEAD(&fail_list);
410 again:
411 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
412 if (addr->is_multicast) {
413 list_del(&addr->entry);
414 spin_unlock_irqrestore(&card->ip_lock, *flags);
415 rc = qeth_l3_deregister_addr_entry(card, addr);
416 spin_lock_irqsave(&card->ip_lock, *flags);
417 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
418 kfree(addr);
419 else
420 list_add_tail(&addr->entry, &fail_list);
421 goto again;
422 }
423 }
424 list_splice(&fail_list, &card->ip_list);
425 }
426
427 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
428 {
429 struct list_head *tbd_list;
430 struct qeth_ipaddr *todo, *addr;
431 unsigned long flags;
432 int rc;
433
434 QETH_CARD_TEXT(card, 2, "sdiplist");
435 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
436
437 if ((card->state != CARD_STATE_UP &&
438 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
439 return;
440 }
441
442 spin_lock_irqsave(&card->ip_lock, flags);
443 tbd_list = card->ip_tbd_list;
444 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
445 if (!card->ip_tbd_list) {
446 QETH_CARD_TEXT(card, 0, "silnomem");
447 card->ip_tbd_list = tbd_list;
448 spin_unlock_irqrestore(&card->ip_lock, flags);
449 return;
450 } else
451 INIT_LIST_HEAD(card->ip_tbd_list);
452
453 while (!list_empty(tbd_list)) {
454 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
455 list_del(&todo->entry);
456 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
457 __qeth_l3_delete_all_mc(card, &flags);
458 kfree(todo);
459 continue;
460 }
461 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
462 if (rc == 0) {
463 /* nothing to be done; only adjusted refcount */
464 kfree(todo);
465 } else if (rc == 1) {
466 /* new entry to be added to on-card list */
467 spin_unlock_irqrestore(&card->ip_lock, flags);
468 rc = qeth_l3_register_addr_entry(card, todo);
469 spin_lock_irqsave(&card->ip_lock, flags);
470 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
471 list_add_tail(&todo->entry, &card->ip_list);
472 else
473 kfree(todo);
474 } else if (rc == -1) {
475 /* on-card entry to be removed */
476 list_del_init(&addr->entry);
477 spin_unlock_irqrestore(&card->ip_lock, flags);
478 rc = qeth_l3_deregister_addr_entry(card, addr);
479 spin_lock_irqsave(&card->ip_lock, flags);
480 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
481 kfree(addr);
482 else
483 list_add_tail(&addr->entry, &card->ip_list);
484 kfree(todo);
485 }
486 }
487 spin_unlock_irqrestore(&card->ip_lock, flags);
488 kfree(tbd_list);
489 }
490
491 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
492 {
493 struct qeth_ipaddr *addr, *tmp;
494 unsigned long flags;
495
496 QETH_CARD_TEXT(card, 4, "clearip");
497 if (recover && card->options.sniffer)
498 return;
499 spin_lock_irqsave(&card->ip_lock, flags);
500 /* clear todo list */
501 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
502 list_del(&addr->entry);
503 kfree(addr);
504 }
505
506 while (!list_empty(&card->ip_list)) {
507 addr = list_entry(card->ip_list.next,
508 struct qeth_ipaddr, entry);
509 list_del_init(&addr->entry);
510 if (!recover || addr->is_multicast) {
511 kfree(addr);
512 continue;
513 }
514 list_add_tail(&addr->entry, card->ip_tbd_list);
515 }
516 spin_unlock_irqrestore(&card->ip_lock, flags);
517 }
518
519 static int qeth_l3_address_exists_in_list(struct list_head *list,
520 struct qeth_ipaddr *addr, int same_type)
521 {
522 struct qeth_ipaddr *tmp;
523
524 list_for_each_entry(tmp, list, entry) {
525 if ((tmp->proto == QETH_PROT_IPV4) &&
526 (addr->proto == QETH_PROT_IPV4) &&
527 ((same_type && (tmp->type == addr->type)) ||
528 (!same_type && (tmp->type != addr->type))) &&
529 (tmp->u.a4.addr == addr->u.a4.addr))
530 return 1;
531
532 if ((tmp->proto == QETH_PROT_IPV6) &&
533 (addr->proto == QETH_PROT_IPV6) &&
534 ((same_type && (tmp->type == addr->type)) ||
535 (!same_type && (tmp->type != addr->type))) &&
536 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
537 sizeof(struct in6_addr)) == 0))
538 return 1;
539
540 }
541 return 0;
542 }
543
544 static int qeth_l3_send_setdelmc(struct qeth_card *card,
545 struct qeth_ipaddr *addr, int ipacmd)
546 {
547 int rc;
548 struct qeth_cmd_buffer *iob;
549 struct qeth_ipa_cmd *cmd;
550
551 QETH_CARD_TEXT(card, 4, "setdelmc");
552
553 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
554 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
555 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
556 if (addr->proto == QETH_PROT_IPV6)
557 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
558 sizeof(struct in6_addr));
559 else
560 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
561
562 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
563
564 return rc;
565 }
566
567 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
568 {
569 int i, j;
570 for (i = 0; i < 16; i++) {
571 j = (len) - (i * 8);
572 if (j >= 8)
573 netmask[i] = 0xff;
574 else if (j > 0)
575 netmask[i] = (u8)(0xFF00 >> j);
576 else
577 netmask[i] = 0;
578 }
579 }
580
581 static int qeth_l3_send_setdelip(struct qeth_card *card,
582 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
583 {
584 int rc;
585 struct qeth_cmd_buffer *iob;
586 struct qeth_ipa_cmd *cmd;
587 __u8 netmask[16];
588
589 QETH_CARD_TEXT(card, 4, "setdelip");
590 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
591
592 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
593 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
594 if (addr->proto == QETH_PROT_IPV6) {
595 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
596 sizeof(struct in6_addr));
597 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
598 memcpy(cmd->data.setdelip6.mask, netmask,
599 sizeof(struct in6_addr));
600 cmd->data.setdelip6.flags = flags;
601 } else {
602 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
603 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
604 cmd->data.setdelip4.flags = flags;
605 }
606
607 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
608
609 return rc;
610 }
611
612 static int qeth_l3_send_setrouting(struct qeth_card *card,
613 enum qeth_routing_types type, enum qeth_prot_versions prot)
614 {
615 int rc;
616 struct qeth_ipa_cmd *cmd;
617 struct qeth_cmd_buffer *iob;
618
619 QETH_CARD_TEXT(card, 4, "setroutg");
620 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
621 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
622 cmd->data.setrtg.type = (type);
623 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
624
625 return rc;
626 }
627
628 static void qeth_l3_correct_routing_type(struct qeth_card *card,
629 enum qeth_routing_types *type, enum qeth_prot_versions prot)
630 {
631 if (card->info.type == QETH_CARD_TYPE_IQD) {
632 switch (*type) {
633 case NO_ROUTER:
634 case PRIMARY_CONNECTOR:
635 case SECONDARY_CONNECTOR:
636 case MULTICAST_ROUTER:
637 return;
638 default:
639 goto out_inval;
640 }
641 } else {
642 switch (*type) {
643 case NO_ROUTER:
644 case PRIMARY_ROUTER:
645 case SECONDARY_ROUTER:
646 return;
647 case MULTICAST_ROUTER:
648 if (qeth_is_ipafunc_supported(card, prot,
649 IPA_OSA_MC_ROUTER))
650 return;
651 default:
652 goto out_inval;
653 }
654 }
655 out_inval:
656 *type = NO_ROUTER;
657 }
658
659 int qeth_l3_setrouting_v4(struct qeth_card *card)
660 {
661 int rc;
662
663 QETH_CARD_TEXT(card, 3, "setrtg4");
664
665 qeth_l3_correct_routing_type(card, &card->options.route4.type,
666 QETH_PROT_IPV4);
667
668 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
669 QETH_PROT_IPV4);
670 if (rc) {
671 card->options.route4.type = NO_ROUTER;
672 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
673 " on %s. Type set to 'no router'.\n", rc,
674 QETH_CARD_IFNAME(card));
675 }
676 return rc;
677 }
678
679 int qeth_l3_setrouting_v6(struct qeth_card *card)
680 {
681 int rc = 0;
682
683 QETH_CARD_TEXT(card, 3, "setrtg6");
684 #ifdef CONFIG_QETH_IPV6
685
686 if (!qeth_is_supported(card, IPA_IPV6))
687 return 0;
688 qeth_l3_correct_routing_type(card, &card->options.route6.type,
689 QETH_PROT_IPV6);
690
691 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
692 QETH_PROT_IPV6);
693 if (rc) {
694 card->options.route6.type = NO_ROUTER;
695 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
696 " on %s. Type set to 'no router'.\n", rc,
697 QETH_CARD_IFNAME(card));
698 }
699 #endif
700 return rc;
701 }
702
703 /*
704 * IP address takeover related functions
705 */
706 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
707 {
708
709 struct qeth_ipato_entry *ipatoe, *tmp;
710 unsigned long flags;
711
712 spin_lock_irqsave(&card->ip_lock, flags);
713 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
714 list_del(&ipatoe->entry);
715 kfree(ipatoe);
716 }
717 spin_unlock_irqrestore(&card->ip_lock, flags);
718 }
719
720 int qeth_l3_add_ipato_entry(struct qeth_card *card,
721 struct qeth_ipato_entry *new)
722 {
723 struct qeth_ipato_entry *ipatoe;
724 unsigned long flags;
725 int rc = 0;
726
727 QETH_CARD_TEXT(card, 2, "addipato");
728 spin_lock_irqsave(&card->ip_lock, flags);
729 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
730 if (ipatoe->proto != new->proto)
731 continue;
732 if (!memcmp(ipatoe->addr, new->addr,
733 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
734 (ipatoe->mask_bits == new->mask_bits)) {
735 rc = -EEXIST;
736 break;
737 }
738 }
739 if (!rc)
740 list_add_tail(&new->entry, &card->ipato.entries);
741
742 spin_unlock_irqrestore(&card->ip_lock, flags);
743 return rc;
744 }
745
746 void qeth_l3_del_ipato_entry(struct qeth_card *card,
747 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
748 {
749 struct qeth_ipato_entry *ipatoe, *tmp;
750 unsigned long flags;
751
752 QETH_CARD_TEXT(card, 2, "delipato");
753 spin_lock_irqsave(&card->ip_lock, flags);
754 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
755 if (ipatoe->proto != proto)
756 continue;
757 if (!memcmp(ipatoe->addr, addr,
758 (proto == QETH_PROT_IPV4)? 4:16) &&
759 (ipatoe->mask_bits == mask_bits)) {
760 list_del(&ipatoe->entry);
761 kfree(ipatoe);
762 }
763 }
764 spin_unlock_irqrestore(&card->ip_lock, flags);
765 }
766
767 /*
768 * VIPA related functions
769 */
770 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
771 const u8 *addr)
772 {
773 struct qeth_ipaddr *ipaddr;
774 unsigned long flags;
775 int rc = 0;
776
777 ipaddr = qeth_l3_get_addr_buffer(proto);
778 if (ipaddr) {
779 if (proto == QETH_PROT_IPV4) {
780 QETH_CARD_TEXT(card, 2, "addvipa4");
781 memcpy(&ipaddr->u.a4.addr, addr, 4);
782 ipaddr->u.a4.mask = 0;
783 } else if (proto == QETH_PROT_IPV6) {
784 QETH_CARD_TEXT(card, 2, "addvipa6");
785 memcpy(&ipaddr->u.a6.addr, addr, 16);
786 ipaddr->u.a6.pfxlen = 0;
787 }
788 ipaddr->type = QETH_IP_TYPE_VIPA;
789 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
790 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
791 } else
792 return -ENOMEM;
793 spin_lock_irqsave(&card->ip_lock, flags);
794 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
795 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
796 rc = -EEXIST;
797 spin_unlock_irqrestore(&card->ip_lock, flags);
798 if (rc) {
799 return rc;
800 }
801 if (!qeth_l3_add_ip(card, ipaddr))
802 kfree(ipaddr);
803 qeth_l3_set_ip_addr_list(card);
804 return rc;
805 }
806
807 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
808 const u8 *addr)
809 {
810 struct qeth_ipaddr *ipaddr;
811
812 ipaddr = qeth_l3_get_addr_buffer(proto);
813 if (ipaddr) {
814 if (proto == QETH_PROT_IPV4) {
815 QETH_CARD_TEXT(card, 2, "delvipa4");
816 memcpy(&ipaddr->u.a4.addr, addr, 4);
817 ipaddr->u.a4.mask = 0;
818 } else if (proto == QETH_PROT_IPV6) {
819 QETH_CARD_TEXT(card, 2, "delvipa6");
820 memcpy(&ipaddr->u.a6.addr, addr, 16);
821 ipaddr->u.a6.pfxlen = 0;
822 }
823 ipaddr->type = QETH_IP_TYPE_VIPA;
824 } else
825 return;
826 if (!qeth_l3_delete_ip(card, ipaddr))
827 kfree(ipaddr);
828 qeth_l3_set_ip_addr_list(card);
829 }
830
831 /*
832 * proxy ARP related functions
833 */
834 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
835 const u8 *addr)
836 {
837 struct qeth_ipaddr *ipaddr;
838 unsigned long flags;
839 int rc = 0;
840
841 ipaddr = qeth_l3_get_addr_buffer(proto);
842 if (ipaddr) {
843 if (proto == QETH_PROT_IPV4) {
844 QETH_CARD_TEXT(card, 2, "addrxip4");
845 memcpy(&ipaddr->u.a4.addr, addr, 4);
846 ipaddr->u.a4.mask = 0;
847 } else if (proto == QETH_PROT_IPV6) {
848 QETH_CARD_TEXT(card, 2, "addrxip6");
849 memcpy(&ipaddr->u.a6.addr, addr, 16);
850 ipaddr->u.a6.pfxlen = 0;
851 }
852 ipaddr->type = QETH_IP_TYPE_RXIP;
853 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
854 ipaddr->del_flags = 0;
855 } else
856 return -ENOMEM;
857 spin_lock_irqsave(&card->ip_lock, flags);
858 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
859 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
860 rc = -EEXIST;
861 spin_unlock_irqrestore(&card->ip_lock, flags);
862 if (rc) {
863 return rc;
864 }
865 if (!qeth_l3_add_ip(card, ipaddr))
866 kfree(ipaddr);
867 qeth_l3_set_ip_addr_list(card);
868 return 0;
869 }
870
871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
872 const u8 *addr)
873 {
874 struct qeth_ipaddr *ipaddr;
875
876 ipaddr = qeth_l3_get_addr_buffer(proto);
877 if (ipaddr) {
878 if (proto == QETH_PROT_IPV4) {
879 QETH_CARD_TEXT(card, 2, "addrxip4");
880 memcpy(&ipaddr->u.a4.addr, addr, 4);
881 ipaddr->u.a4.mask = 0;
882 } else if (proto == QETH_PROT_IPV6) {
883 QETH_CARD_TEXT(card, 2, "addrxip6");
884 memcpy(&ipaddr->u.a6.addr, addr, 16);
885 ipaddr->u.a6.pfxlen = 0;
886 }
887 ipaddr->type = QETH_IP_TYPE_RXIP;
888 } else
889 return;
890 if (!qeth_l3_delete_ip(card, ipaddr))
891 kfree(ipaddr);
892 qeth_l3_set_ip_addr_list(card);
893 }
894
895 static int qeth_l3_register_addr_entry(struct qeth_card *card,
896 struct qeth_ipaddr *addr)
897 {
898 char buf[50];
899 int rc = 0;
900 int cnt = 3;
901
902 if (addr->proto == QETH_PROT_IPV4) {
903 QETH_CARD_TEXT(card, 2, "setaddr4");
904 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
905 } else if (addr->proto == QETH_PROT_IPV6) {
906 QETH_CARD_TEXT(card, 2, "setaddr6");
907 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
908 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
909 } else {
910 QETH_CARD_TEXT(card, 2, "setaddr?");
911 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
912 }
913 do {
914 if (addr->is_multicast)
915 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
916 else
917 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
918 addr->set_flags);
919 if (rc)
920 QETH_CARD_TEXT(card, 2, "failed");
921 } while ((--cnt > 0) && rc);
922 if (rc) {
923 QETH_CARD_TEXT(card, 2, "FAILED");
924 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
925 dev_warn(&card->gdev->dev,
926 "Registering IP address %s failed\n", buf);
927 }
928 return rc;
929 }
930
931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
932 struct qeth_ipaddr *addr)
933 {
934 int rc = 0;
935
936 if (addr->proto == QETH_PROT_IPV4) {
937 QETH_CARD_TEXT(card, 2, "deladdr4");
938 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
939 } else if (addr->proto == QETH_PROT_IPV6) {
940 QETH_CARD_TEXT(card, 2, "deladdr6");
941 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
942 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
943 } else {
944 QETH_CARD_TEXT(card, 2, "deladdr?");
945 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
946 }
947 if (addr->is_multicast)
948 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
949 else
950 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
951 addr->del_flags);
952 if (rc)
953 QETH_CARD_TEXT(card, 2, "failed");
954
955 return rc;
956 }
957
958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
959 {
960 if (cast_type == RTN_MULTICAST)
961 return QETH_CAST_MULTICAST;
962 if (cast_type == RTN_BROADCAST)
963 return QETH_CAST_BROADCAST;
964 return QETH_CAST_UNICAST;
965 }
966
967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
968 {
969 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
970 if (cast_type == RTN_MULTICAST)
971 return ct | QETH_CAST_MULTICAST;
972 if (cast_type == RTN_ANYCAST)
973 return ct | QETH_CAST_ANYCAST;
974 if (cast_type == RTN_BROADCAST)
975 return ct | QETH_CAST_BROADCAST;
976 return ct | QETH_CAST_UNICAST;
977 }
978
979 static int qeth_l3_setadapter_parms(struct qeth_card *card)
980 {
981 int rc;
982
983 QETH_DBF_TEXT(SETUP, 2, "setadprm");
984
985 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
986 dev_info(&card->gdev->dev,
987 "set adapter parameters not supported.\n");
988 QETH_DBF_TEXT(SETUP, 2, " notsupp");
989 return 0;
990 }
991 rc = qeth_query_setadapterparms(card);
992 if (rc) {
993 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
994 "0x%x\n", dev_name(&card->gdev->dev), rc);
995 return rc;
996 }
997 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
998 rc = qeth_setadpparms_change_macaddr(card);
999 if (rc)
1000 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1001 " address failed\n");
1002 }
1003
1004 return rc;
1005 }
1006
1007 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1008 struct qeth_reply *reply, unsigned long data)
1009 {
1010 struct qeth_ipa_cmd *cmd;
1011
1012 QETH_CARD_TEXT(card, 4, "defadpcb");
1013
1014 cmd = (struct qeth_ipa_cmd *) data;
1015 if (cmd->hdr.return_code == 0) {
1016 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1017 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1018 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1019 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1020 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1021 }
1022 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1023 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1024 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1025 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1026 }
1027 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1028 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029 card->info.tx_csum_mask =
1030 cmd->data.setassparms.data.flags_32bit;
1031 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1032 }
1033
1034 return 0;
1035 }
1036
1037 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1038 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1039 __u16 len, enum qeth_prot_versions prot)
1040 {
1041 struct qeth_cmd_buffer *iob;
1042 struct qeth_ipa_cmd *cmd;
1043
1044 QETH_CARD_TEXT(card, 4, "getasscm");
1045 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1046
1047 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1048 cmd->data.setassparms.hdr.assist_no = ipa_func;
1049 cmd->data.setassparms.hdr.length = 8 + len;
1050 cmd->data.setassparms.hdr.command_code = cmd_code;
1051 cmd->data.setassparms.hdr.return_code = 0;
1052 cmd->data.setassparms.hdr.seq_no = 0;
1053
1054 return iob;
1055 }
1056
1057 static int qeth_l3_send_setassparms(struct qeth_card *card,
1058 struct qeth_cmd_buffer *iob, __u16 len, long data,
1059 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1060 unsigned long),
1061 void *reply_param)
1062 {
1063 int rc;
1064 struct qeth_ipa_cmd *cmd;
1065
1066 QETH_CARD_TEXT(card, 4, "sendassp");
1067
1068 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1069 if (len <= sizeof(__u32))
1070 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1071 else /* (len > sizeof(__u32)) */
1072 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1073
1074 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1075 return rc;
1076 }
1077
1078 #ifdef CONFIG_QETH_IPV6
1079 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1080 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1081 {
1082 int rc;
1083 struct qeth_cmd_buffer *iob;
1084
1085 QETH_CARD_TEXT(card, 4, "simassp6");
1086 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1087 0, QETH_PROT_IPV6);
1088 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1089 qeth_l3_default_setassparms_cb, NULL);
1090 return rc;
1091 }
1092 #endif
1093
1094 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1095 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1096 {
1097 int rc;
1098 int length = 0;
1099 struct qeth_cmd_buffer *iob;
1100
1101 QETH_CARD_TEXT(card, 4, "simassp4");
1102 if (data)
1103 length = sizeof(__u32);
1104 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1105 length, QETH_PROT_IPV4);
1106 rc = qeth_l3_send_setassparms(card, iob, length, data,
1107 qeth_l3_default_setassparms_cb, NULL);
1108 return rc;
1109 }
1110
1111 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1112 {
1113 int rc;
1114
1115 QETH_CARD_TEXT(card, 3, "ipaarp");
1116
1117 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1118 dev_info(&card->gdev->dev,
1119 "ARP processing not supported on %s!\n",
1120 QETH_CARD_IFNAME(card));
1121 return 0;
1122 }
1123 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1124 IPA_CMD_ASS_START, 0);
1125 if (rc) {
1126 dev_warn(&card->gdev->dev,
1127 "Starting ARP processing support for %s failed\n",
1128 QETH_CARD_IFNAME(card));
1129 }
1130 return rc;
1131 }
1132
1133 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1134 {
1135 int rc;
1136
1137 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1138
1139 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1140 dev_info(&card->gdev->dev,
1141 "Hardware IP fragmentation not supported on %s\n",
1142 QETH_CARD_IFNAME(card));
1143 return -EOPNOTSUPP;
1144 }
1145
1146 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1147 IPA_CMD_ASS_START, 0);
1148 if (rc) {
1149 dev_warn(&card->gdev->dev,
1150 "Starting IP fragmentation support for %s failed\n",
1151 QETH_CARD_IFNAME(card));
1152 } else
1153 dev_info(&card->gdev->dev,
1154 "Hardware IP fragmentation enabled \n");
1155 return rc;
1156 }
1157
1158 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1159 {
1160 int rc;
1161
1162 QETH_CARD_TEXT(card, 3, "stsrcmac");
1163
1164 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1165 dev_info(&card->gdev->dev,
1166 "Inbound source MAC-address not supported on %s\n",
1167 QETH_CARD_IFNAME(card));
1168 return -EOPNOTSUPP;
1169 }
1170
1171 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1172 IPA_CMD_ASS_START, 0);
1173 if (rc)
1174 dev_warn(&card->gdev->dev,
1175 "Starting source MAC-address support for %s failed\n",
1176 QETH_CARD_IFNAME(card));
1177 return rc;
1178 }
1179
1180 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1181 {
1182 int rc = 0;
1183
1184 QETH_CARD_TEXT(card, 3, "strtvlan");
1185
1186 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1187 dev_info(&card->gdev->dev,
1188 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1189 return -EOPNOTSUPP;
1190 }
1191
1192 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1193 IPA_CMD_ASS_START, 0);
1194 if (rc) {
1195 dev_warn(&card->gdev->dev,
1196 "Starting VLAN support for %s failed\n",
1197 QETH_CARD_IFNAME(card));
1198 } else {
1199 dev_info(&card->gdev->dev, "VLAN enabled\n");
1200 }
1201 return rc;
1202 }
1203
1204 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1205 {
1206 int rc;
1207
1208 QETH_CARD_TEXT(card, 3, "stmcast");
1209
1210 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1211 dev_info(&card->gdev->dev,
1212 "Multicast not supported on %s\n",
1213 QETH_CARD_IFNAME(card));
1214 return -EOPNOTSUPP;
1215 }
1216
1217 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1218 IPA_CMD_ASS_START, 0);
1219 if (rc) {
1220 dev_warn(&card->gdev->dev,
1221 "Starting multicast support for %s failed\n",
1222 QETH_CARD_IFNAME(card));
1223 } else {
1224 dev_info(&card->gdev->dev, "Multicast enabled\n");
1225 card->dev->flags |= IFF_MULTICAST;
1226 }
1227 return rc;
1228 }
1229
1230 #ifdef CONFIG_QETH_IPV6
1231 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1232 {
1233 int rc;
1234
1235 QETH_CARD_TEXT(card, 3, "softipv6");
1236
1237 if (card->info.type == QETH_CARD_TYPE_IQD)
1238 goto out;
1239
1240 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1241 if (rc) {
1242 dev_err(&card->gdev->dev,
1243 "Activating IPv6 support for %s failed\n",
1244 QETH_CARD_IFNAME(card));
1245 return rc;
1246 }
1247 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1248 IPA_CMD_ASS_START, 3);
1249 if (rc) {
1250 dev_err(&card->gdev->dev,
1251 "Activating IPv6 support for %s failed\n",
1252 QETH_CARD_IFNAME(card));
1253 return rc;
1254 }
1255 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1256 IPA_CMD_ASS_START);
1257 if (rc) {
1258 dev_err(&card->gdev->dev,
1259 "Activating IPv6 support for %s failed\n",
1260 QETH_CARD_IFNAME(card));
1261 return rc;
1262 }
1263 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1264 IPA_CMD_ASS_START);
1265 if (rc) {
1266 dev_warn(&card->gdev->dev,
1267 "Enabling the passthrough mode for %s failed\n",
1268 QETH_CARD_IFNAME(card));
1269 return rc;
1270 }
1271 out:
1272 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1273 return 0;
1274 }
1275 #endif
1276
1277 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1278 {
1279 int rc = 0;
1280
1281 QETH_CARD_TEXT(card, 3, "strtipv6");
1282
1283 if (!qeth_is_supported(card, IPA_IPV6)) {
1284 dev_info(&card->gdev->dev,
1285 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1286 return 0;
1287 }
1288 #ifdef CONFIG_QETH_IPV6
1289 rc = qeth_l3_softsetup_ipv6(card);
1290 #endif
1291 return rc ;
1292 }
1293
1294 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1295 {
1296 int rc;
1297
1298 QETH_CARD_TEXT(card, 3, "stbrdcst");
1299 card->info.broadcast_capable = 0;
1300 if (!qeth_is_supported(card, IPA_FILTERING)) {
1301 dev_info(&card->gdev->dev,
1302 "Broadcast not supported on %s\n",
1303 QETH_CARD_IFNAME(card));
1304 rc = -EOPNOTSUPP;
1305 goto out;
1306 }
1307 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1308 IPA_CMD_ASS_START, 0);
1309 if (rc) {
1310 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1311 "%s failed\n", QETH_CARD_IFNAME(card));
1312 goto out;
1313 }
1314
1315 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1316 IPA_CMD_ASS_CONFIGURE, 1);
1317 if (rc) {
1318 dev_warn(&card->gdev->dev,
1319 "Setting up broadcast filtering for %s failed\n",
1320 QETH_CARD_IFNAME(card));
1321 goto out;
1322 }
1323 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1324 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1325 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1326 IPA_CMD_ASS_ENABLE, 1);
1327 if (rc) {
1328 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1329 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1330 goto out;
1331 }
1332 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1333 out:
1334 if (card->info.broadcast_capable)
1335 card->dev->flags |= IFF_BROADCAST;
1336 else
1337 card->dev->flags &= ~IFF_BROADCAST;
1338 return rc;
1339 }
1340
1341 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1342 {
1343 int rc;
1344
1345 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1346 IPA_CMD_ASS_START, 0);
1347 if (rc) {
1348 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1349 "failed, using SW checksumming\n",
1350 QETH_CARD_IFNAME(card));
1351 return rc;
1352 }
1353 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1354 IPA_CMD_ASS_ENABLE,
1355 card->info.csum_mask);
1356 if (rc) {
1357 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1358 "failed, using SW checksumming\n",
1359 QETH_CARD_IFNAME(card));
1360 return rc;
1361 }
1362 return 0;
1363 }
1364
1365 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1366 {
1367 int rc = 0;
1368
1369 if (on) {
1370 rc = qeth_l3_send_checksum_command(card);
1371 if (rc)
1372 return -EIO;
1373 dev_info(&card->gdev->dev,
1374 "HW Checksumming (inbound) enabled\n");
1375 } else {
1376 rc = qeth_l3_send_simple_setassparms(card,
1377 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1378 if (rc)
1379 return -EIO;
1380 }
1381
1382 return 0;
1383 }
1384
1385 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1386 {
1387 QETH_CARD_TEXT(card, 3, "strtcsum");
1388
1389 if (card->dev->features & NETIF_F_RXCSUM) {
1390 rtnl_lock();
1391 /* force set_features call */
1392 card->dev->features &= ~NETIF_F_RXCSUM;
1393 netdev_update_features(card->dev);
1394 rtnl_unlock();
1395 }
1396 return 0;
1397 }
1398
1399 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1400 {
1401 int rc = 0;
1402
1403 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1404 return rc;
1405 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1406 IPA_CMD_ASS_START, 0);
1407 if (rc)
1408 goto err_out;
1409 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1410 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1411 if (rc)
1412 goto err_out;
1413 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1414 return rc;
1415 err_out:
1416 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1417 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1418 return rc;
1419 }
1420
1421 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1422 {
1423 int rc;
1424
1425 QETH_CARD_TEXT(card, 3, "sttso");
1426
1427 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1428 dev_info(&card->gdev->dev,
1429 "Outbound TSO not supported on %s\n",
1430 QETH_CARD_IFNAME(card));
1431 rc = -EOPNOTSUPP;
1432 } else {
1433 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1434 IPA_CMD_ASS_START, 0);
1435 if (rc)
1436 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1437 "segmentation offload for %s failed\n",
1438 QETH_CARD_IFNAME(card));
1439 else
1440 dev_info(&card->gdev->dev,
1441 "Outbound TSO enabled\n");
1442 }
1443 if (rc)
1444 card->dev->features &= ~NETIF_F_TSO;
1445 return rc;
1446 }
1447
1448 static int qeth_l3_start_ipassists(struct qeth_card *card)
1449 {
1450 QETH_CARD_TEXT(card, 3, "strtipas");
1451
1452 qeth_set_access_ctrl_online(card); /* go on*/
1453 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1454 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1455 qeth_l3_start_ipa_source_mac(card); /* go on*/
1456 qeth_l3_start_ipa_vlan(card); /* go on*/
1457 qeth_l3_start_ipa_multicast(card); /* go on*/
1458 qeth_l3_start_ipa_ipv6(card); /* go on*/
1459 qeth_l3_start_ipa_broadcast(card); /* go on*/
1460 qeth_l3_start_ipa_checksum(card); /* go on*/
1461 qeth_l3_start_ipa_tx_checksum(card);
1462 qeth_l3_start_ipa_tso(card); /* go on*/
1463 return 0;
1464 }
1465
1466 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1467 struct qeth_reply *reply, unsigned long data)
1468 {
1469 struct qeth_ipa_cmd *cmd;
1470
1471 cmd = (struct qeth_ipa_cmd *) data;
1472 if (cmd->hdr.return_code == 0)
1473 memcpy(card->dev->dev_addr,
1474 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1475 else
1476 random_ether_addr(card->dev->dev_addr);
1477
1478 return 0;
1479 }
1480
1481 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1482 {
1483 int rc = 0;
1484 struct qeth_cmd_buffer *iob;
1485 struct qeth_ipa_cmd *cmd;
1486
1487 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1488
1489 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1490 QETH_PROT_IPV6);
1491 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1492 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1493 card->info.unique_id;
1494
1495 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1496 NULL);
1497 return rc;
1498 }
1499
1500 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1501 struct qeth_reply *reply, unsigned long data)
1502 {
1503 struct qeth_ipa_cmd *cmd;
1504
1505 cmd = (struct qeth_ipa_cmd *) data;
1506 if (cmd->hdr.return_code == 0)
1507 card->info.unique_id = *((__u16 *)
1508 &cmd->data.create_destroy_addr.unique_id[6]);
1509 else {
1510 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1511 UNIQUE_ID_NOT_BY_CARD;
1512 dev_warn(&card->gdev->dev, "The network adapter failed to "
1513 "generate a unique ID\n");
1514 }
1515 return 0;
1516 }
1517
1518 static int qeth_l3_get_unique_id(struct qeth_card *card)
1519 {
1520 int rc = 0;
1521 struct qeth_cmd_buffer *iob;
1522 struct qeth_ipa_cmd *cmd;
1523
1524 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1525
1526 if (!qeth_is_supported(card, IPA_IPV6)) {
1527 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1528 UNIQUE_ID_NOT_BY_CARD;
1529 return 0;
1530 }
1531
1532 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1533 QETH_PROT_IPV6);
1534 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1535 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1536 card->info.unique_id;
1537
1538 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1539 return rc;
1540 }
1541
1542 static int
1543 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1544 unsigned long data)
1545 {
1546 struct qeth_ipa_cmd *cmd;
1547 __u16 rc;
1548
1549 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1550
1551 cmd = (struct qeth_ipa_cmd *)data;
1552 rc = cmd->hdr.return_code;
1553 if (rc)
1554 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1555 switch (cmd->data.diagass.action) {
1556 case QETH_DIAGS_CMD_TRACE_QUERY:
1557 break;
1558 case QETH_DIAGS_CMD_TRACE_DISABLE:
1559 switch (rc) {
1560 case 0:
1561 case IPA_RC_INVALID_SUBCMD:
1562 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1563 dev_info(&card->gdev->dev, "The HiperSockets network "
1564 "traffic analyzer is deactivated\n");
1565 break;
1566 default:
1567 break;
1568 }
1569 break;
1570 case QETH_DIAGS_CMD_TRACE_ENABLE:
1571 switch (rc) {
1572 case 0:
1573 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1574 dev_info(&card->gdev->dev, "The HiperSockets network "
1575 "traffic analyzer is activated\n");
1576 break;
1577 case IPA_RC_HARDWARE_AUTH_ERROR:
1578 dev_warn(&card->gdev->dev, "The device is not "
1579 "authorized to run as a HiperSockets network "
1580 "traffic analyzer\n");
1581 break;
1582 case IPA_RC_TRACE_ALREADY_ACTIVE:
1583 dev_warn(&card->gdev->dev, "A HiperSockets "
1584 "network traffic analyzer is already "
1585 "active in the HiperSockets LAN\n");
1586 break;
1587 default:
1588 break;
1589 }
1590 break;
1591 default:
1592 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1593 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1594 }
1595
1596 return 0;
1597 }
1598
1599 static int
1600 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1601 {
1602 struct qeth_cmd_buffer *iob;
1603 struct qeth_ipa_cmd *cmd;
1604
1605 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1606
1607 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1608 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1609 cmd->data.diagass.subcmd_len = 16;
1610 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1611 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1612 cmd->data.diagass.action = diags_cmd;
1613 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1614 }
1615
1616 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1617 struct net_device *dev)
1618 {
1619 ip_eth_mc_map(ipm, mac);
1620 }
1621
1622 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1623 {
1624 struct qeth_ipaddr *ipm;
1625 struct ip_mc_list *im4;
1626 char buf[MAX_ADDR_LEN];
1627
1628 QETH_CARD_TEXT(card, 4, "addmc");
1629 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1630 im4 = rcu_dereference(im4->next_rcu)) {
1631 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1632 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1633 if (!ipm)
1634 continue;
1635 ipm->u.a4.addr = im4->multiaddr;
1636 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1637 ipm->is_multicast = 1;
1638 if (!qeth_l3_add_ip(card, ipm))
1639 kfree(ipm);
1640 }
1641 }
1642
1643 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1644 {
1645 struct in_device *in_dev;
1646 u16 vid;
1647
1648 QETH_CARD_TEXT(card, 4, "addmcvl");
1649 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1650 return;
1651
1652 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1653 struct net_device *netdev;
1654
1655 rcu_read_lock();
1656 netdev = __vlan_find_dev_deep(card->dev, vid);
1657 rcu_read_unlock();
1658 if (netdev == NULL ||
1659 !(netdev->flags & IFF_UP))
1660 continue;
1661 in_dev = in_dev_get(netdev);
1662 if (!in_dev)
1663 continue;
1664 rcu_read_lock();
1665 qeth_l3_add_mc(card, in_dev);
1666 rcu_read_unlock();
1667 in_dev_put(in_dev);
1668 }
1669 }
1670
1671 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1672 {
1673 struct in_device *in4_dev;
1674
1675 QETH_CARD_TEXT(card, 4, "chkmcv4");
1676 in4_dev = in_dev_get(card->dev);
1677 if (in4_dev == NULL)
1678 return;
1679 rcu_read_lock();
1680 qeth_l3_add_mc(card, in4_dev);
1681 qeth_l3_add_vlan_mc(card);
1682 rcu_read_unlock();
1683 in_dev_put(in4_dev);
1684 }
1685
1686 #ifdef CONFIG_QETH_IPV6
1687 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1688 {
1689 struct qeth_ipaddr *ipm;
1690 struct ifmcaddr6 *im6;
1691 char buf[MAX_ADDR_LEN];
1692
1693 QETH_CARD_TEXT(card, 4, "addmc6");
1694 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1695 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1696 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1697 if (!ipm)
1698 continue;
1699 ipm->is_multicast = 1;
1700 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1701 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1702 sizeof(struct in6_addr));
1703 if (!qeth_l3_add_ip(card, ipm))
1704 kfree(ipm);
1705 }
1706 }
1707
1708 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1709 {
1710 struct inet6_dev *in_dev;
1711 u16 vid;
1712
1713 QETH_CARD_TEXT(card, 4, "admc6vl");
1714 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1715 return;
1716
1717 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1718 struct net_device *netdev;
1719
1720 netdev = __vlan_find_dev_deep(card->dev, vid);
1721 if (netdev == NULL ||
1722 !(netdev->flags & IFF_UP))
1723 continue;
1724 in_dev = in6_dev_get(netdev);
1725 if (!in_dev)
1726 continue;
1727 read_lock_bh(&in_dev->lock);
1728 qeth_l3_add_mc6(card, in_dev);
1729 read_unlock_bh(&in_dev->lock);
1730 in6_dev_put(in_dev);
1731 }
1732 }
1733
1734 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1735 {
1736 struct inet6_dev *in6_dev;
1737
1738 QETH_CARD_TEXT(card, 4, "chkmcv6");
1739 if (!qeth_is_supported(card, IPA_IPV6))
1740 return ;
1741 in6_dev = in6_dev_get(card->dev);
1742 if (in6_dev == NULL)
1743 return;
1744 read_lock_bh(&in6_dev->lock);
1745 qeth_l3_add_mc6(card, in6_dev);
1746 qeth_l3_add_vlan_mc6(card);
1747 read_unlock_bh(&in6_dev->lock);
1748 in6_dev_put(in6_dev);
1749 }
1750 #endif /* CONFIG_QETH_IPV6 */
1751
1752 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1753 unsigned short vid)
1754 {
1755 struct in_device *in_dev;
1756 struct in_ifaddr *ifa;
1757 struct qeth_ipaddr *addr;
1758 struct net_device *netdev;
1759
1760 QETH_CARD_TEXT(card, 4, "frvaddr4");
1761
1762 netdev = __vlan_find_dev_deep(card->dev, vid);
1763 in_dev = in_dev_get(netdev);
1764 if (!in_dev)
1765 return;
1766 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1767 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1768 if (addr) {
1769 addr->u.a4.addr = ifa->ifa_address;
1770 addr->u.a4.mask = ifa->ifa_mask;
1771 addr->type = QETH_IP_TYPE_NORMAL;
1772 if (!qeth_l3_delete_ip(card, addr))
1773 kfree(addr);
1774 }
1775 }
1776 in_dev_put(in_dev);
1777 }
1778
1779 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1780 unsigned short vid)
1781 {
1782 #ifdef CONFIG_QETH_IPV6
1783 struct inet6_dev *in6_dev;
1784 struct inet6_ifaddr *ifa;
1785 struct qeth_ipaddr *addr;
1786 struct net_device *netdev;
1787
1788 QETH_CARD_TEXT(card, 4, "frvaddr6");
1789
1790 netdev = __vlan_find_dev_deep(card->dev, vid);
1791 in6_dev = in6_dev_get(netdev);
1792 if (!in6_dev)
1793 return;
1794 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1795 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1796 if (addr) {
1797 memcpy(&addr->u.a6.addr, &ifa->addr,
1798 sizeof(struct in6_addr));
1799 addr->u.a6.pfxlen = ifa->prefix_len;
1800 addr->type = QETH_IP_TYPE_NORMAL;
1801 if (!qeth_l3_delete_ip(card, addr))
1802 kfree(addr);
1803 }
1804 }
1805 in6_dev_put(in6_dev);
1806 #endif /* CONFIG_QETH_IPV6 */
1807 }
1808
1809 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1810 unsigned short vid)
1811 {
1812 qeth_l3_free_vlan_addresses4(card, vid);
1813 qeth_l3_free_vlan_addresses6(card, vid);
1814 }
1815
1816 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1817 {
1818 struct qeth_card *card = dev->ml_priv;
1819
1820 set_bit(vid, card->active_vlans);
1821 return 0;
1822 }
1823
1824 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1825 {
1826 struct qeth_card *card = dev->ml_priv;
1827 unsigned long flags;
1828
1829 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1830 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1831 QETH_CARD_TEXT(card, 3, "kidREC");
1832 return 0;
1833 }
1834 spin_lock_irqsave(&card->vlanlock, flags);
1835 /* unregister IP addresses of vlan device */
1836 qeth_l3_free_vlan_addresses(card, vid);
1837 clear_bit(vid, card->active_vlans);
1838 spin_unlock_irqrestore(&card->vlanlock, flags);
1839 qeth_l3_set_multicast_list(card->dev);
1840 return 0;
1841 }
1842
1843 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1844 struct sk_buff *skb, struct qeth_hdr *hdr,
1845 unsigned short *vlan_id)
1846 {
1847 __be16 prot;
1848 struct iphdr *ip_hdr;
1849 unsigned char tg_addr[MAX_ADDR_LEN];
1850 int is_vlan = 0;
1851
1852 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1853 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1854 ETH_P_IP);
1855 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1856 case QETH_CAST_MULTICAST:
1857 switch (prot) {
1858 #ifdef CONFIG_QETH_IPV6
1859 case __constant_htons(ETH_P_IPV6):
1860 ndisc_mc_map((struct in6_addr *)
1861 skb->data + 24,
1862 tg_addr, card->dev, 0);
1863 break;
1864 #endif
1865 case __constant_htons(ETH_P_IP):
1866 ip_hdr = (struct iphdr *)skb->data;
1867 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1868 break;
1869 default:
1870 memcpy(tg_addr, card->dev->broadcast,
1871 card->dev->addr_len);
1872 }
1873 card->stats.multicast++;
1874 skb->pkt_type = PACKET_MULTICAST;
1875 break;
1876 case QETH_CAST_BROADCAST:
1877 memcpy(tg_addr, card->dev->broadcast,
1878 card->dev->addr_len);
1879 card->stats.multicast++;
1880 skb->pkt_type = PACKET_BROADCAST;
1881 break;
1882 case QETH_CAST_UNICAST:
1883 case QETH_CAST_ANYCAST:
1884 case QETH_CAST_NOCAST:
1885 default:
1886 if (card->options.sniffer)
1887 skb->pkt_type = PACKET_OTHERHOST;
1888 else
1889 skb->pkt_type = PACKET_HOST;
1890 memcpy(tg_addr, card->dev->dev_addr,
1891 card->dev->addr_len);
1892 }
1893 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1894 card->dev->header_ops->create(skb, card->dev, prot,
1895 tg_addr, &hdr->hdr.l3.dest_addr[2],
1896 card->dev->addr_len);
1897 else
1898 card->dev->header_ops->create(skb, card->dev, prot,
1899 tg_addr, "FAKELL", card->dev->addr_len);
1900 }
1901
1902 skb->protocol = eth_type_trans(skb, card->dev);
1903
1904 if (hdr->hdr.l3.ext_flags &
1905 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1906 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1907 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1908 is_vlan = 1;
1909 }
1910
1911 if (card->dev->features & NETIF_F_RXCSUM) {
1912 if ((hdr->hdr.l3.ext_flags &
1913 (QETH_HDR_EXT_CSUM_HDR_REQ |
1914 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1915 (QETH_HDR_EXT_CSUM_HDR_REQ |
1916 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1917 skb->ip_summed = CHECKSUM_UNNECESSARY;
1918 else
1919 skb->ip_summed = CHECKSUM_NONE;
1920 } else
1921 skb->ip_summed = CHECKSUM_NONE;
1922
1923 return is_vlan;
1924 }
1925
1926 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1927 int budget, int *done)
1928 {
1929 int work_done = 0;
1930 struct sk_buff *skb;
1931 struct qeth_hdr *hdr;
1932 __u16 vlan_tag = 0;
1933 int is_vlan;
1934 unsigned int len;
1935 __u16 magic;
1936
1937 *done = 0;
1938 BUG_ON(!budget);
1939 while (budget) {
1940 skb = qeth_core_get_next_skb(card,
1941 &card->qdio.in_q->bufs[card->rx.b_index],
1942 &card->rx.b_element, &card->rx.e_offset, &hdr);
1943 if (!skb) {
1944 *done = 1;
1945 break;
1946 }
1947 skb->dev = card->dev;
1948 switch (hdr->hdr.l3.id) {
1949 case QETH_HEADER_TYPE_LAYER3:
1950 magic = *(__u16 *)skb->data;
1951 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1952 (magic == ETH_P_AF_IUCV)) {
1953 skb->protocol = ETH_P_AF_IUCV;
1954 skb->pkt_type = PACKET_HOST;
1955 skb->mac_header = NET_SKB_PAD;
1956 skb->dev = card->dev;
1957 len = skb->len;
1958 card->dev->header_ops->create(skb, card->dev, 0,
1959 card->dev->dev_addr, "FAKELL",
1960 card->dev->addr_len);
1961 netif_receive_skb(skb);
1962 } else {
1963 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1964 &vlan_tag);
1965 len = skb->len;
1966 if (is_vlan && !card->options.sniffer)
1967 __vlan_hwaccel_put_tag(skb, vlan_tag);
1968 napi_gro_receive(&card->napi, skb);
1969 }
1970 break;
1971 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1972 skb->pkt_type = PACKET_HOST;
1973 skb->protocol = eth_type_trans(skb, skb->dev);
1974 len = skb->len;
1975 netif_receive_skb(skb);
1976 break;
1977 default:
1978 dev_kfree_skb_any(skb);
1979 QETH_CARD_TEXT(card, 3, "inbunkno");
1980 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1981 continue;
1982 }
1983 work_done++;
1984 budget--;
1985 card->stats.rx_packets++;
1986 card->stats.rx_bytes += len;
1987 }
1988 return work_done;
1989 }
1990
1991 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1992 {
1993 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1994 int work_done = 0;
1995 struct qeth_qdio_buffer *buffer;
1996 int done;
1997 int new_budget = budget;
1998
1999 if (card->options.performance_stats) {
2000 card->perf_stats.inbound_cnt++;
2001 card->perf_stats.inbound_start_time = qeth_get_micros();
2002 }
2003
2004 while (1) {
2005 if (!card->rx.b_count) {
2006 card->rx.qdio_err = 0;
2007 card->rx.b_count = qdio_get_next_buffers(
2008 card->data.ccwdev, 0, &card->rx.b_index,
2009 &card->rx.qdio_err);
2010 if (card->rx.b_count <= 0) {
2011 card->rx.b_count = 0;
2012 break;
2013 }
2014 card->rx.b_element =
2015 &card->qdio.in_q->bufs[card->rx.b_index]
2016 .buffer->element[0];
2017 card->rx.e_offset = 0;
2018 }
2019
2020 while (card->rx.b_count) {
2021 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2022 if (!(card->rx.qdio_err &&
2023 qeth_check_qdio_errors(card, buffer->buffer,
2024 card->rx.qdio_err, "qinerr")))
2025 work_done += qeth_l3_process_inbound_buffer(
2026 card, new_budget, &done);
2027 else
2028 done = 1;
2029
2030 if (done) {
2031 if (card->options.performance_stats)
2032 card->perf_stats.bufs_rec++;
2033 qeth_put_buffer_pool_entry(card,
2034 buffer->pool_entry);
2035 qeth_queue_input_buffer(card, card->rx.b_index);
2036 card->rx.b_count--;
2037 if (card->rx.b_count) {
2038 card->rx.b_index =
2039 (card->rx.b_index + 1) %
2040 QDIO_MAX_BUFFERS_PER_Q;
2041 card->rx.b_element =
2042 &card->qdio.in_q
2043 ->bufs[card->rx.b_index]
2044 .buffer->element[0];
2045 card->rx.e_offset = 0;
2046 }
2047 }
2048
2049 if (work_done >= budget)
2050 goto out;
2051 else
2052 new_budget = budget - work_done;
2053 }
2054 }
2055
2056 napi_complete(napi);
2057 if (qdio_start_irq(card->data.ccwdev, 0))
2058 napi_schedule(&card->napi);
2059 out:
2060 if (card->options.performance_stats)
2061 card->perf_stats.inbound_time += qeth_get_micros() -
2062 card->perf_stats.inbound_start_time;
2063 return work_done;
2064 }
2065
2066 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2067 struct qeth_card *card)
2068 {
2069 int rc = 0;
2070 u16 vid;
2071
2072 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2073 struct net_device *netdev;
2074
2075 rcu_read_lock();
2076 netdev = __vlan_find_dev_deep(card->dev, vid);
2077 rcu_read_unlock();
2078 if (netdev == dev) {
2079 rc = QETH_VLAN_CARD;
2080 break;
2081 }
2082 }
2083
2084 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2085 return 0;
2086
2087 return rc;
2088 }
2089
2090 static int qeth_l3_verify_dev(struct net_device *dev)
2091 {
2092 struct qeth_card *card;
2093 unsigned long flags;
2094 int rc = 0;
2095
2096 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2097 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2098 if (card->dev == dev) {
2099 rc = QETH_REAL_CARD;
2100 break;
2101 }
2102 rc = qeth_l3_verify_vlan_dev(dev, card);
2103 if (rc)
2104 break;
2105 }
2106 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2107
2108 return rc;
2109 }
2110
2111 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2112 {
2113 struct qeth_card *card = NULL;
2114 int rc;
2115
2116 rc = qeth_l3_verify_dev(dev);
2117 if (rc == QETH_REAL_CARD)
2118 card = dev->ml_priv;
2119 else if (rc == QETH_VLAN_CARD)
2120 card = vlan_dev_real_dev(dev)->ml_priv;
2121 if (card && card->options.layer2)
2122 card = NULL;
2123 if (card)
2124 QETH_CARD_TEXT_(card, 4, "%d", rc);
2125 return card ;
2126 }
2127
2128 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2129 {
2130 int rc = 0;
2131
2132 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2133 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2134
2135 qeth_set_allowed_threads(card, 0, 1);
2136 if (card->options.sniffer &&
2137 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2138 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2139 if (card->read.state == CH_STATE_UP &&
2140 card->write.state == CH_STATE_UP &&
2141 (card->state == CARD_STATE_UP)) {
2142 if (recovery_mode)
2143 qeth_l3_stop(card->dev);
2144 else {
2145 rtnl_lock();
2146 dev_close(card->dev);
2147 rtnl_unlock();
2148 }
2149 card->state = CARD_STATE_SOFTSETUP;
2150 }
2151 if (card->state == CARD_STATE_SOFTSETUP) {
2152 qeth_l3_clear_ip_list(card, 1);
2153 qeth_clear_ipacmd_list(card);
2154 card->state = CARD_STATE_HARDSETUP;
2155 }
2156 if (card->state == CARD_STATE_HARDSETUP) {
2157 qeth_qdio_clear_card(card, 0);
2158 qeth_clear_qdio_buffers(card);
2159 qeth_clear_working_pool_list(card);
2160 card->state = CARD_STATE_DOWN;
2161 }
2162 if (card->state == CARD_STATE_DOWN) {
2163 qeth_clear_cmd_buffers(&card->read);
2164 qeth_clear_cmd_buffers(&card->write);
2165 }
2166 return rc;
2167 }
2168
2169 /*
2170 * test for and Switch promiscuous mode (on or off)
2171 * either for guestlan or HiperSocket Sniffer
2172 */
2173 static void
2174 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2175 {
2176 struct net_device *dev = card->dev;
2177
2178 if (((dev->flags & IFF_PROMISC) &&
2179 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2180 (!(dev->flags & IFF_PROMISC) &&
2181 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2182 return;
2183
2184 if (card->info.guestlan) { /* Guestlan trace */
2185 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2186 qeth_setadp_promisc_mode(card);
2187 } else if (card->options.sniffer && /* HiperSockets trace */
2188 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2189 if (dev->flags & IFF_PROMISC) {
2190 QETH_CARD_TEXT(card, 3, "+promisc");
2191 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2192 } else {
2193 QETH_CARD_TEXT(card, 3, "-promisc");
2194 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2195 }
2196 }
2197 }
2198
2199 static void qeth_l3_set_multicast_list(struct net_device *dev)
2200 {
2201 struct qeth_card *card = dev->ml_priv;
2202
2203 QETH_CARD_TEXT(card, 3, "setmulti");
2204 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2205 (card->state != CARD_STATE_UP))
2206 return;
2207 if (!card->options.sniffer) {
2208 qeth_l3_delete_mc_addresses(card);
2209 qeth_l3_add_multicast_ipv4(card);
2210 #ifdef CONFIG_QETH_IPV6
2211 qeth_l3_add_multicast_ipv6(card);
2212 #endif
2213 qeth_l3_set_ip_addr_list(card);
2214 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2215 return;
2216 }
2217 qeth_l3_handle_promisc_mode(card);
2218 }
2219
2220 static const char *qeth_l3_arp_get_error_cause(int *rc)
2221 {
2222 switch (*rc) {
2223 case QETH_IPA_ARP_RC_FAILED:
2224 *rc = -EIO;
2225 return "operation failed";
2226 case QETH_IPA_ARP_RC_NOTSUPP:
2227 *rc = -EOPNOTSUPP;
2228 return "operation not supported";
2229 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2230 *rc = -EINVAL;
2231 return "argument out of range";
2232 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2233 *rc = -EOPNOTSUPP;
2234 return "query operation not supported";
2235 case QETH_IPA_ARP_RC_Q_NO_DATA:
2236 *rc = -ENOENT;
2237 return "no query data available";
2238 default:
2239 return "unknown error";
2240 }
2241 }
2242
2243 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2244 {
2245 int tmp;
2246 int rc;
2247
2248 QETH_CARD_TEXT(card, 3, "arpstnoe");
2249
2250 /*
2251 * currently GuestLAN only supports the ARP assist function
2252 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2253 * thus we say EOPNOTSUPP for this ARP function
2254 */
2255 if (card->info.guestlan)
2256 return -EOPNOTSUPP;
2257 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2258 return -EOPNOTSUPP;
2259 }
2260 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2261 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2262 no_entries);
2263 if (rc) {
2264 tmp = rc;
2265 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2266 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2267 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2268 }
2269 return rc;
2270 }
2271
2272 static __u32 get_arp_entry_size(struct qeth_card *card,
2273 struct qeth_arp_query_data *qdata,
2274 struct qeth_arp_entrytype *type, __u8 strip_entries)
2275 {
2276 __u32 rc;
2277 __u8 is_hsi;
2278
2279 is_hsi = qdata->reply_bits == 5;
2280 if (type->ip == QETHARP_IP_ADDR_V4) {
2281 QETH_CARD_TEXT(card, 4, "arpev4");
2282 if (strip_entries) {
2283 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2284 sizeof(struct qeth_arp_qi_entry7_short);
2285 } else {
2286 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2287 sizeof(struct qeth_arp_qi_entry7);
2288 }
2289 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2290 QETH_CARD_TEXT(card, 4, "arpev6");
2291 if (strip_entries) {
2292 rc = is_hsi ?
2293 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2294 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2295 } else {
2296 rc = is_hsi ?
2297 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2298 sizeof(struct qeth_arp_qi_entry7_ipv6);
2299 }
2300 } else {
2301 QETH_CARD_TEXT(card, 4, "arpinv");
2302 rc = 0;
2303 }
2304
2305 return rc;
2306 }
2307
2308 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2309 {
2310 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2311 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2312 }
2313
2314 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2315 struct qeth_reply *reply, unsigned long data)
2316 {
2317 struct qeth_ipa_cmd *cmd;
2318 struct qeth_arp_query_data *qdata;
2319 struct qeth_arp_query_info *qinfo;
2320 int i;
2321 int e;
2322 int entrybytes_done;
2323 int stripped_bytes;
2324 __u8 do_strip_entries;
2325
2326 QETH_CARD_TEXT(card, 3, "arpquecb");
2327
2328 qinfo = (struct qeth_arp_query_info *) reply->param;
2329 cmd = (struct qeth_ipa_cmd *) data;
2330 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2331 if (cmd->hdr.return_code) {
2332 QETH_CARD_TEXT(card, 4, "arpcberr");
2333 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2334 return 0;
2335 }
2336 if (cmd->data.setassparms.hdr.return_code) {
2337 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2338 QETH_CARD_TEXT(card, 4, "setaperr");
2339 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2340 return 0;
2341 }
2342 qdata = &cmd->data.setassparms.data.query_arp;
2343 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2344
2345 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2346 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2347 entrybytes_done = 0;
2348 for (e = 0; e < qdata->no_entries; ++e) {
2349 char *cur_entry;
2350 __u32 esize;
2351 struct qeth_arp_entrytype *etype;
2352
2353 cur_entry = &qdata->data + entrybytes_done;
2354 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2355 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2356 QETH_CARD_TEXT(card, 4, "pmis");
2357 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2358 break;
2359 }
2360 esize = get_arp_entry_size(card, qdata, etype,
2361 do_strip_entries);
2362 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2363 if (!esize)
2364 break;
2365
2366 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2367 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2368 cmd->hdr.return_code = IPA_RC_ENOMEM;
2369 goto out_error;
2370 }
2371
2372 memcpy(qinfo->udata + qinfo->udata_offset,
2373 &qdata->data + entrybytes_done + stripped_bytes,
2374 esize);
2375 entrybytes_done += esize + stripped_bytes;
2376 qinfo->udata_offset += esize;
2377 ++qinfo->no_entries;
2378 }
2379 /* check if all replies received ... */
2380 if (cmd->data.setassparms.hdr.seq_no <
2381 cmd->data.setassparms.hdr.number_of_replies)
2382 return 1;
2383 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2384 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2385 /* keep STRIP_ENTRIES flag so the user program can distinguish
2386 * stripped entries from normal ones */
2387 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2388 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2389 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2390 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2391 return 0;
2392 out_error:
2393 i = 0;
2394 memcpy(qinfo->udata, &i, 4);
2395 return 0;
2396 }
2397
2398 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2399 struct qeth_cmd_buffer *iob, int len,
2400 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2401 unsigned long),
2402 void *reply_param)
2403 {
2404 QETH_CARD_TEXT(card, 4, "sendarp");
2405
2406 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2407 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2408 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2409 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2410 reply_cb, reply_param);
2411 }
2412
2413 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2414 enum qeth_prot_versions prot,
2415 struct qeth_arp_query_info *qinfo)
2416 {
2417 struct qeth_cmd_buffer *iob;
2418 struct qeth_ipa_cmd *cmd;
2419 int tmp;
2420 int rc;
2421
2422 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2423
2424 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2425 IPA_CMD_ASS_ARP_QUERY_INFO,
2426 sizeof(struct qeth_arp_query_data) - sizeof(char),
2427 prot);
2428 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2429 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2430 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2431 cmd->data.setassparms.data.query_arp.no_entries = 0;
2432 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2433 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2434 qeth_l3_arp_query_cb, (void *)qinfo);
2435 if (rc) {
2436 tmp = rc;
2437 QETH_DBF_MESSAGE(2,
2438 "Error while querying ARP cache on %s: %s "
2439 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2440 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2441 }
2442
2443 return rc;
2444 }
2445
2446 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2447 {
2448 struct qeth_arp_query_info qinfo = {0, };
2449 int rc;
2450
2451 QETH_CARD_TEXT(card, 3, "arpquery");
2452
2453 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2454 IPA_ARP_PROCESSING)) {
2455 QETH_CARD_TEXT(card, 3, "arpqnsup");
2456 rc = -EOPNOTSUPP;
2457 goto out;
2458 }
2459 /* get size of userspace buffer and mask_bits -> 6 bytes */
2460 if (copy_from_user(&qinfo, udata, 6)) {
2461 rc = -EFAULT;
2462 goto out;
2463 }
2464 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2465 if (!qinfo.udata) {
2466 rc = -ENOMEM;
2467 goto out;
2468 }
2469 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2470 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2471 if (rc) {
2472 if (copy_to_user(udata, qinfo.udata, 4))
2473 rc = -EFAULT;
2474 goto free_and_out;
2475 } else {
2476 #ifdef CONFIG_QETH_IPV6
2477 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2478 /* fails in case of GuestLAN QDIO mode */
2479 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2480 &qinfo);
2481 }
2482 #endif
2483 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2484 QETH_CARD_TEXT(card, 4, "qactf");
2485 rc = -EFAULT;
2486 goto free_and_out;
2487 }
2488 QETH_CARD_TEXT_(card, 4, "qacts");
2489 }
2490 free_and_out:
2491 kfree(qinfo.udata);
2492 out:
2493 return rc;
2494 }
2495
2496 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2497 struct qeth_arp_cache_entry *entry)
2498 {
2499 struct qeth_cmd_buffer *iob;
2500 char buf[16];
2501 int tmp;
2502 int rc;
2503
2504 QETH_CARD_TEXT(card, 3, "arpadent");
2505
2506 /*
2507 * currently GuestLAN only supports the ARP assist function
2508 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2509 * thus we say EOPNOTSUPP for this ARP function
2510 */
2511 if (card->info.guestlan)
2512 return -EOPNOTSUPP;
2513 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2514 return -EOPNOTSUPP;
2515 }
2516
2517 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2518 IPA_CMD_ASS_ARP_ADD_ENTRY,
2519 sizeof(struct qeth_arp_cache_entry),
2520 QETH_PROT_IPV4);
2521 rc = qeth_l3_send_setassparms(card, iob,
2522 sizeof(struct qeth_arp_cache_entry),
2523 (unsigned long) entry,
2524 qeth_l3_default_setassparms_cb, NULL);
2525 if (rc) {
2526 tmp = rc;
2527 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2528 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2529 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2530 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2531 }
2532 return rc;
2533 }
2534
2535 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2536 struct qeth_arp_cache_entry *entry)
2537 {
2538 struct qeth_cmd_buffer *iob;
2539 char buf[16] = {0, };
2540 int tmp;
2541 int rc;
2542
2543 QETH_CARD_TEXT(card, 3, "arprment");
2544
2545 /*
2546 * currently GuestLAN only supports the ARP assist function
2547 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2548 * thus we say EOPNOTSUPP for this ARP function
2549 */
2550 if (card->info.guestlan)
2551 return -EOPNOTSUPP;
2552 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2553 return -EOPNOTSUPP;
2554 }
2555 memcpy(buf, entry, 12);
2556 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2557 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2558 12,
2559 QETH_PROT_IPV4);
2560 rc = qeth_l3_send_setassparms(card, iob,
2561 12, (unsigned long)buf,
2562 qeth_l3_default_setassparms_cb, NULL);
2563 if (rc) {
2564 tmp = rc;
2565 memset(buf, 0, 16);
2566 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2567 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2568 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2569 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2570 }
2571 return rc;
2572 }
2573
2574 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2575 {
2576 int rc;
2577 int tmp;
2578
2579 QETH_CARD_TEXT(card, 3, "arpflush");
2580
2581 /*
2582 * currently GuestLAN only supports the ARP assist function
2583 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2584 * thus we say EOPNOTSUPP for this ARP function
2585 */
2586 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2587 return -EOPNOTSUPP;
2588 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2589 return -EOPNOTSUPP;
2590 }
2591 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2592 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2593 if (rc) {
2594 tmp = rc;
2595 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2596 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2597 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2598 }
2599 return rc;
2600 }
2601
2602 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2603 {
2604 struct qeth_card *card = dev->ml_priv;
2605 struct qeth_arp_cache_entry arp_entry;
2606 struct mii_ioctl_data *mii_data;
2607 int rc = 0;
2608
2609 if (!card)
2610 return -ENODEV;
2611
2612 if ((card->state != CARD_STATE_UP) &&
2613 (card->state != CARD_STATE_SOFTSETUP))
2614 return -ENODEV;
2615
2616 switch (cmd) {
2617 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2618 if (!capable(CAP_NET_ADMIN)) {
2619 rc = -EPERM;
2620 break;
2621 }
2622 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2623 break;
2624 case SIOC_QETH_ARP_QUERY_INFO:
2625 if (!capable(CAP_NET_ADMIN)) {
2626 rc = -EPERM;
2627 break;
2628 }
2629 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2630 break;
2631 case SIOC_QETH_ARP_ADD_ENTRY:
2632 if (!capable(CAP_NET_ADMIN)) {
2633 rc = -EPERM;
2634 break;
2635 }
2636 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2637 sizeof(struct qeth_arp_cache_entry)))
2638 rc = -EFAULT;
2639 else
2640 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2641 break;
2642 case SIOC_QETH_ARP_REMOVE_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_remove_entry(card, &arp_entry);
2652 break;
2653 case SIOC_QETH_ARP_FLUSH_CACHE:
2654 if (!capable(CAP_NET_ADMIN)) {
2655 rc = -EPERM;
2656 break;
2657 }
2658 rc = qeth_l3_arp_flush_cache(card);
2659 break;
2660 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2661 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2662 break;
2663 case SIOC_QETH_GET_CARD_TYPE:
2664 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2665 card->info.type == QETH_CARD_TYPE_OSX) &&
2666 !card->info.guestlan)
2667 return 1;
2668 return 0;
2669 break;
2670 case SIOCGMIIPHY:
2671 mii_data = if_mii(rq);
2672 mii_data->phy_id = 0;
2673 break;
2674 case SIOCGMIIREG:
2675 mii_data = if_mii(rq);
2676 if (mii_data->phy_id != 0)
2677 rc = -EINVAL;
2678 else
2679 mii_data->val_out = qeth_mdio_read(dev,
2680 mii_data->phy_id,
2681 mii_data->reg_num);
2682 break;
2683 case SIOC_QETH_QUERY_OAT:
2684 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2685 break;
2686 default:
2687 rc = -EOPNOTSUPP;
2688 }
2689 if (rc)
2690 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2691 return rc;
2692 }
2693
2694 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2695 {
2696 int cast_type = RTN_UNSPEC;
2697 struct neighbour *n = NULL;
2698 struct dst_entry *dst;
2699
2700 rcu_read_lock();
2701 dst = skb_dst(skb);
2702 if (dst)
2703 n = dst_neigh_lookup_skb(dst, skb);
2704 if (n) {
2705 cast_type = n->type;
2706 rcu_read_unlock();
2707 neigh_release(n);
2708 if ((cast_type == RTN_BROADCAST) ||
2709 (cast_type == RTN_MULTICAST) ||
2710 (cast_type == RTN_ANYCAST))
2711 return cast_type;
2712 else
2713 return RTN_UNSPEC;
2714 }
2715 rcu_read_unlock();
2716
2717 /* try something else */
2718 if (skb->protocol == ETH_P_IPV6)
2719 return (skb_network_header(skb)[24] == 0xff) ?
2720 RTN_MULTICAST : 0;
2721 else if (skb->protocol == ETH_P_IP)
2722 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2723 RTN_MULTICAST : 0;
2724 /* ... */
2725 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2726 return RTN_BROADCAST;
2727 else {
2728 u16 hdr_mac;
2729
2730 hdr_mac = *((u16 *)skb->data);
2731 /* tr multicast? */
2732 switch (card->info.link_type) {
2733 case QETH_LINK_TYPE_HSTR:
2734 case QETH_LINK_TYPE_LANE_TR:
2735 if ((hdr_mac == QETH_TR_MAC_NC) ||
2736 (hdr_mac == QETH_TR_MAC_C))
2737 return RTN_MULTICAST;
2738 break;
2739 /* eth or so multicast? */
2740 default:
2741 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2742 (hdr_mac == QETH_ETH_MAC_V6))
2743 return RTN_MULTICAST;
2744 }
2745 }
2746 return cast_type;
2747 }
2748
2749 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2750 struct qeth_hdr *hdr, struct sk_buff *skb)
2751 {
2752 char daddr[16];
2753 struct af_iucv_trans_hdr *iucv_hdr;
2754
2755 skb_pull(skb, 14);
2756 card->dev->header_ops->create(skb, card->dev, 0,
2757 card->dev->dev_addr, card->dev->dev_addr,
2758 card->dev->addr_len);
2759 skb_pull(skb, 14);
2760 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2761 memset(hdr, 0, sizeof(struct qeth_hdr));
2762 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2763 hdr->hdr.l3.ext_flags = 0;
2764 hdr->hdr.l3.length = skb->len;
2765 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2766 memset(daddr, 0, sizeof(daddr));
2767 daddr[0] = 0xfe;
2768 daddr[1] = 0x80;
2769 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2770 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2771 }
2772
2773 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2774 struct sk_buff *skb, int ipv, int cast_type)
2775 {
2776 struct dst_entry *dst;
2777
2778 memset(hdr, 0, sizeof(struct qeth_hdr));
2779 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2780 hdr->hdr.l3.ext_flags = 0;
2781
2782 /*
2783 * before we're going to overwrite this location with next hop ip.
2784 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2785 */
2786 if (vlan_tx_tag_present(skb)) {
2787 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2788 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2789 else
2790 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2791 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2792 }
2793
2794 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2795
2796 rcu_read_lock();
2797 dst = skb_dst(skb);
2798 if (ipv == 4) {
2799 struct rtable *rt = (struct rtable *) dst;
2800 __be32 *pkey = &ip_hdr(skb)->daddr;
2801
2802 if (rt->rt_gateway)
2803 pkey = &rt->rt_gateway;
2804
2805 /* IPv4 */
2806 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2807 memset(hdr->hdr.l3.dest_addr, 0, 12);
2808 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2809 } else if (ipv == 6) {
2810 struct rt6_info *rt = (struct rt6_info *) dst;
2811 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2812
2813 if (!ipv6_addr_any(&rt->rt6i_gateway))
2814 pkey = &rt->rt6i_gateway;
2815
2816 /* IPv6 */
2817 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2818 if (card->info.type == QETH_CARD_TYPE_IQD)
2819 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2820 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2821 } else {
2822 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2823 skb->dev->broadcast, 6)) {
2824 /* broadcast? */
2825 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2826 QETH_HDR_PASSTHRU;
2827 } else {
2828 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2829 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2830 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2831 }
2832 }
2833 rcu_read_unlock();
2834 }
2835
2836 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2837 struct qeth_hdr *hdr, struct sk_buff *skb)
2838 {
2839 struct iphdr *iph = ip_hdr(skb);
2840
2841 /* tcph->check contains already the pseudo hdr checksum
2842 * so just set the header flags
2843 */
2844 if (iph->protocol == IPPROTO_UDP)
2845 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2846 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2847 QETH_HDR_EXT_CSUM_HDR_REQ;
2848 iph->check = 0;
2849 if (card->options.performance_stats)
2850 card->perf_stats.tx_csum++;
2851 }
2852
2853 static void qeth_tso_fill_header(struct qeth_card *card,
2854 struct qeth_hdr *qhdr, struct sk_buff *skb)
2855 {
2856 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2857 struct tcphdr *tcph = tcp_hdr(skb);
2858 struct iphdr *iph = ip_hdr(skb);
2859 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2860
2861 /*fix header to TSO values ...*/
2862 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2863 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2864 /*set values which are fix for the first approach ...*/
2865 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2866 hdr->ext.imb_hdr_no = 1;
2867 hdr->ext.hdr_type = 1;
2868 hdr->ext.hdr_version = 1;
2869 hdr->ext.hdr_len = 28;
2870 /*insert non-fix values */
2871 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2872 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2873 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2874 sizeof(struct qeth_hdr_tso));
2875 tcph->check = 0;
2876 if (skb->protocol == ETH_P_IPV6) {
2877 ip6h->payload_len = 0;
2878 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2879 0, IPPROTO_TCP, 0);
2880 } else {
2881 /*OSA want us to set these values ...*/
2882 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2883 0, IPPROTO_TCP, 0);
2884 iph->tot_len = 0;
2885 iph->check = 0;
2886 }
2887 }
2888
2889 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2890 {
2891 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2892 tcp_hdr(skb)->doff * 4;
2893 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2894 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2895 elements += skb_shinfo(skb)->nr_frags;
2896 return elements;
2897 }
2898
2899 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2900 {
2901 int rc;
2902 u16 *tag;
2903 struct qeth_hdr *hdr = NULL;
2904 int elements_needed = 0;
2905 int elems;
2906 struct qeth_card *card = dev->ml_priv;
2907 struct sk_buff *new_skb = NULL;
2908 int ipv = qeth_get_ip_version(skb);
2909 int cast_type = qeth_l3_get_cast_type(card, skb);
2910 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2911 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2912 int tx_bytes = skb->len;
2913 bool large_send;
2914 int data_offset = -1;
2915 int nr_frags;
2916
2917 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2918 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2919 ((card->options.cq == QETH_CQ_ENABLED) &&
2920 (skb->protocol != ETH_P_AF_IUCV)))) ||
2921 card->options.sniffer)
2922 goto tx_drop;
2923
2924 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2925 card->stats.tx_carrier_errors++;
2926 goto tx_drop;
2927 }
2928
2929 if ((cast_type == RTN_BROADCAST) &&
2930 (card->info.broadcast_capable == 0))
2931 goto tx_drop;
2932
2933 if (card->options.performance_stats) {
2934 card->perf_stats.outbound_cnt++;
2935 card->perf_stats.outbound_start_time = qeth_get_micros();
2936 }
2937
2938 large_send = skb_is_gso(skb);
2939
2940 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2941 (skb_shinfo(skb)->nr_frags == 0)) {
2942 new_skb = skb;
2943 if (new_skb->protocol == ETH_P_AF_IUCV)
2944 data_offset = 0;
2945 else
2946 data_offset = ETH_HLEN;
2947 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2948 if (!hdr)
2949 goto tx_drop;
2950 elements_needed++;
2951 } else {
2952 /* create a clone with writeable headroom */
2953 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2954 + VLAN_HLEN);
2955 if (!new_skb)
2956 goto tx_drop;
2957 }
2958
2959 if (card->info.type == QETH_CARD_TYPE_IQD) {
2960 if (data_offset < 0)
2961 skb_pull(new_skb, ETH_HLEN);
2962 } else {
2963 if (ipv == 4) {
2964 skb_pull(new_skb, ETH_HLEN);
2965 }
2966
2967 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2968 skb_push(new_skb, VLAN_HLEN);
2969 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2970 skb_copy_to_linear_data_offset(new_skb, 4,
2971 new_skb->data + 8, 4);
2972 skb_copy_to_linear_data_offset(new_skb, 8,
2973 new_skb->data + 12, 4);
2974 tag = (u16 *)(new_skb->data + 12);
2975 *tag = __constant_htons(ETH_P_8021Q);
2976 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2977 }
2978 }
2979
2980 netif_stop_queue(dev);
2981
2982 /* fix hardware limitation: as long as we do not have sbal
2983 * chaining we can not send long frag lists
2984 */
2985 if (large_send) {
2986 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2987 if (skb_linearize(new_skb))
2988 goto tx_drop;
2989 if (card->options.performance_stats)
2990 card->perf_stats.tx_lin++;
2991 }
2992 }
2993
2994 if (large_send && (cast_type == RTN_UNSPEC)) {
2995 hdr = (struct qeth_hdr *)skb_push(new_skb,
2996 sizeof(struct qeth_hdr_tso));
2997 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2998 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2999 qeth_tso_fill_header(card, hdr, new_skb);
3000 elements_needed++;
3001 } else {
3002 if (data_offset < 0) {
3003 hdr = (struct qeth_hdr *)skb_push(new_skb,
3004 sizeof(struct qeth_hdr));
3005 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3006 cast_type);
3007 } else {
3008 if (new_skb->protocol == ETH_P_AF_IUCV)
3009 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3010 else {
3011 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3012 cast_type);
3013 hdr->hdr.l3.length = new_skb->len - data_offset;
3014 }
3015 }
3016
3017 if (skb->ip_summed == CHECKSUM_PARTIAL)
3018 qeth_l3_hdr_csum(card, hdr, new_skb);
3019 }
3020
3021 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3022 elements_needed);
3023 if (!elems) {
3024 if (data_offset >= 0)
3025 kmem_cache_free(qeth_core_header_cache, hdr);
3026 goto tx_drop;
3027 }
3028 elements_needed += elems;
3029 nr_frags = skb_shinfo(new_skb)->nr_frags;
3030
3031 if (card->info.type != QETH_CARD_TYPE_IQD) {
3032 int len;
3033 if (large_send)
3034 len = ((unsigned long)tcp_hdr(new_skb) +
3035 tcp_hdr(new_skb)->doff * 4) -
3036 (unsigned long)new_skb->data;
3037 else
3038 len = sizeof(struct qeth_hdr_layer3);
3039
3040 if (qeth_hdr_chk_and_bounce(new_skb, len))
3041 goto tx_drop;
3042 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3043 elements_needed);
3044 } else
3045 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3046 elements_needed, data_offset, 0);
3047
3048 if (!rc) {
3049 card->stats.tx_packets++;
3050 card->stats.tx_bytes += tx_bytes;
3051 if (new_skb != skb)
3052 dev_kfree_skb_any(skb);
3053 if (card->options.performance_stats) {
3054 if (large_send) {
3055 card->perf_stats.large_send_bytes += tx_bytes;
3056 card->perf_stats.large_send_cnt++;
3057 }
3058 if (nr_frags) {
3059 card->perf_stats.sg_skbs_sent++;
3060 /* nr_frags + skb->data */
3061 card->perf_stats.sg_frags_sent += nr_frags + 1;
3062 }
3063 }
3064 rc = NETDEV_TX_OK;
3065 } else {
3066 if (data_offset >= 0)
3067 kmem_cache_free(qeth_core_header_cache, hdr);
3068
3069 if (rc == -EBUSY) {
3070 if (new_skb != skb)
3071 dev_kfree_skb_any(new_skb);
3072 return NETDEV_TX_BUSY;
3073 } else
3074 goto tx_drop;
3075 }
3076
3077 netif_wake_queue(dev);
3078 if (card->options.performance_stats)
3079 card->perf_stats.outbound_time += qeth_get_micros() -
3080 card->perf_stats.outbound_start_time;
3081 return rc;
3082
3083 tx_drop:
3084 card->stats.tx_dropped++;
3085 card->stats.tx_errors++;
3086 if ((new_skb != skb) && new_skb)
3087 dev_kfree_skb_any(new_skb);
3088 dev_kfree_skb_any(skb);
3089 netif_wake_queue(dev);
3090 return NETDEV_TX_OK;
3091 }
3092
3093 static int __qeth_l3_open(struct net_device *dev)
3094 {
3095 struct qeth_card *card = dev->ml_priv;
3096 int rc = 0;
3097
3098 QETH_CARD_TEXT(card, 4, "qethopen");
3099 if (card->state == CARD_STATE_UP)
3100 return rc;
3101 if (card->state != CARD_STATE_SOFTSETUP)
3102 return -ENODEV;
3103 card->data.state = CH_STATE_UP;
3104 card->state = CARD_STATE_UP;
3105 netif_start_queue(dev);
3106
3107 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3108 napi_enable(&card->napi);
3109 napi_schedule(&card->napi);
3110 } else
3111 rc = -EIO;
3112 return rc;
3113 }
3114
3115 static int qeth_l3_open(struct net_device *dev)
3116 {
3117 struct qeth_card *card = dev->ml_priv;
3118
3119 QETH_CARD_TEXT(card, 5, "qethope_");
3120 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3121 QETH_CARD_TEXT(card, 3, "openREC");
3122 return -ERESTARTSYS;
3123 }
3124 return __qeth_l3_open(dev);
3125 }
3126
3127 static int qeth_l3_stop(struct net_device *dev)
3128 {
3129 struct qeth_card *card = dev->ml_priv;
3130
3131 QETH_CARD_TEXT(card, 4, "qethstop");
3132 netif_tx_disable(dev);
3133 if (card->state == CARD_STATE_UP) {
3134 card->state = CARD_STATE_SOFTSETUP;
3135 napi_disable(&card->napi);
3136 }
3137 return 0;
3138 }
3139
3140 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3141 netdev_features_t features)
3142 {
3143 struct qeth_card *card = dev->ml_priv;
3144
3145 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3146 features &= ~NETIF_F_IP_CSUM;
3147 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3148 features &= ~NETIF_F_TSO;
3149 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3150 features &= ~NETIF_F_RXCSUM;
3151
3152 return features;
3153 }
3154
3155 static int qeth_l3_set_features(struct net_device *dev,
3156 netdev_features_t features)
3157 {
3158 struct qeth_card *card = dev->ml_priv;
3159 u32 changed = dev->features ^ features;
3160 int err;
3161
3162 if (!(changed & NETIF_F_RXCSUM))
3163 return 0;
3164
3165 if (card->state == CARD_STATE_DOWN ||
3166 card->state == CARD_STATE_RECOVER)
3167 return 0;
3168
3169 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3170 if (err)
3171 dev->features = features ^ NETIF_F_RXCSUM;
3172
3173 return err;
3174 }
3175
3176 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3177 .get_link = ethtool_op_get_link,
3178 .get_strings = qeth_core_get_strings,
3179 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3180 .get_sset_count = qeth_core_get_sset_count,
3181 .get_drvinfo = qeth_core_get_drvinfo,
3182 .get_settings = qeth_core_ethtool_get_settings,
3183 };
3184
3185 /*
3186 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3187 * NOARP on the netdevice is no option because it also turns off neighbor
3188 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3189 * arp resolution but we want the hard header (packet socket will work
3190 * e.g. tcpdump)
3191 */
3192 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3193 {
3194 n->nud_state = NUD_NOARP;
3195 memcpy(n->ha, "FAKELL", 6);
3196 n->output = n->ops->connected_output;
3197 return 0;
3198 }
3199
3200 static int
3201 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3202 {
3203 if (np->tbl->family == AF_INET)
3204 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3205
3206 return 0;
3207 }
3208
3209 static const struct net_device_ops qeth_l3_netdev_ops = {
3210 .ndo_open = qeth_l3_open,
3211 .ndo_stop = qeth_l3_stop,
3212 .ndo_get_stats = qeth_get_stats,
3213 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3214 .ndo_validate_addr = eth_validate_addr,
3215 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3216 .ndo_do_ioctl = qeth_l3_do_ioctl,
3217 .ndo_change_mtu = qeth_change_mtu,
3218 .ndo_fix_features = qeth_l3_fix_features,
3219 .ndo_set_features = qeth_l3_set_features,
3220 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3221 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3222 .ndo_tx_timeout = qeth_tx_timeout,
3223 };
3224
3225 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3226 .ndo_open = qeth_l3_open,
3227 .ndo_stop = qeth_l3_stop,
3228 .ndo_get_stats = qeth_get_stats,
3229 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3230 .ndo_validate_addr = eth_validate_addr,
3231 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3232 .ndo_do_ioctl = qeth_l3_do_ioctl,
3233 .ndo_change_mtu = qeth_change_mtu,
3234 .ndo_fix_features = qeth_l3_fix_features,
3235 .ndo_set_features = qeth_l3_set_features,
3236 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3237 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3238 .ndo_tx_timeout = qeth_tx_timeout,
3239 .ndo_neigh_setup = qeth_l3_neigh_setup,
3240 };
3241
3242 static int qeth_l3_setup_netdev(struct qeth_card *card)
3243 {
3244 if (card->info.type == QETH_CARD_TYPE_OSD ||
3245 card->info.type == QETH_CARD_TYPE_OSX) {
3246 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3247 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3248 pr_info("qeth_l3: ignoring TR device\n");
3249 return -ENODEV;
3250 } else {
3251 card->dev = alloc_etherdev(0);
3252 if (!card->dev)
3253 return -ENODEV;
3254 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3255
3256 /*IPv6 address autoconfiguration stuff*/
3257 qeth_l3_get_unique_id(card);
3258 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3259 card->dev->dev_id = card->info.unique_id &
3260 0xffff;
3261 if (!card->info.guestlan) {
3262 card->dev->hw_features = NETIF_F_SG |
3263 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3264 NETIF_F_TSO;
3265 card->dev->features = NETIF_F_RXCSUM;
3266 }
3267 }
3268 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3269 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3270 if (!card->dev)
3271 return -ENODEV;
3272 card->dev->flags |= IFF_NOARP;
3273 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3274 qeth_l3_iqd_read_initial_mac(card);
3275 if (card->options.hsuid[0])
3276 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3277 } else
3278 return -ENODEV;
3279
3280 card->dev->ml_priv = card;
3281 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3282 card->dev->mtu = card->info.initial_mtu;
3283 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3284 card->dev->features |= NETIF_F_HW_VLAN_TX |
3285 NETIF_F_HW_VLAN_RX |
3286 NETIF_F_HW_VLAN_FILTER;
3287 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3288 card->dev->gso_max_size = 15 * PAGE_SIZE;
3289
3290 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3291 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3292 return register_netdev(card->dev);
3293 }
3294
3295 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3296 {
3297 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3298
3299 qeth_l3_create_device_attributes(&gdev->dev);
3300 card->options.layer2 = 0;
3301 card->info.hwtrap = 0;
3302 return 0;
3303 }
3304
3305 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3306 {
3307 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3308
3309 qeth_l3_remove_device_attributes(&cgdev->dev);
3310
3311 qeth_set_allowed_threads(card, 0, 1);
3312 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3313
3314 if (cgdev->state == CCWGROUP_ONLINE)
3315 qeth_l3_set_offline(cgdev);
3316
3317 if (card->dev) {
3318 unregister_netdev(card->dev);
3319 card->dev = NULL;
3320 }
3321
3322 qeth_l3_clear_ip_list(card, 0);
3323 qeth_l3_clear_ipato_list(card);
3324 return;
3325 }
3326
3327 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3328 {
3329 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3330 int rc = 0;
3331 enum qeth_card_states recover_flag;
3332
3333 BUG_ON(!card);
3334 mutex_lock(&card->discipline_mutex);
3335 mutex_lock(&card->conf_mutex);
3336 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3337 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3338
3339 recover_flag = card->state;
3340 rc = qeth_core_hardsetup_card(card);
3341 if (rc) {
3342 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3343 rc = -ENODEV;
3344 goto out_remove;
3345 }
3346
3347 if (!card->dev && qeth_l3_setup_netdev(card)) {
3348 rc = -ENODEV;
3349 goto out_remove;
3350 }
3351
3352 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3353 if (card->info.hwtrap &&
3354 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3355 card->info.hwtrap = 0;
3356 } else
3357 card->info.hwtrap = 0;
3358
3359 card->state = CARD_STATE_HARDSETUP;
3360 memset(&card->rx, 0, sizeof(struct qeth_rx));
3361 qeth_print_status_message(card);
3362
3363 /* softsetup */
3364 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3365
3366 rc = qeth_send_startlan(card);
3367 if (rc) {
3368 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3369 if (rc == 0xe080) {
3370 dev_warn(&card->gdev->dev,
3371 "The LAN is offline\n");
3372 card->lan_online = 0;
3373 goto contin;
3374 }
3375 rc = -ENODEV;
3376 goto out_remove;
3377 } else
3378 card->lan_online = 1;
3379
3380 contin:
3381 rc = qeth_l3_setadapter_parms(card);
3382 if (rc)
3383 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3384 if (!card->options.sniffer) {
3385 rc = qeth_l3_start_ipassists(card);
3386 if (rc)
3387 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3388 rc = qeth_l3_setrouting_v4(card);
3389 if (rc)
3390 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3391 rc = qeth_l3_setrouting_v6(card);
3392 if (rc)
3393 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3394 }
3395 netif_tx_disable(card->dev);
3396
3397 rc = qeth_init_qdio_queues(card);
3398 if (rc) {
3399 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3400 rc = -ENODEV;
3401 goto out_remove;
3402 }
3403 card->state = CARD_STATE_SOFTSETUP;
3404
3405 qeth_set_allowed_threads(card, 0xffffffff, 0);
3406 qeth_l3_set_ip_addr_list(card);
3407 if (card->lan_online)
3408 netif_carrier_on(card->dev);
3409 else
3410 netif_carrier_off(card->dev);
3411 if (recover_flag == CARD_STATE_RECOVER) {
3412 rtnl_lock();
3413 if (recovery_mode)
3414 __qeth_l3_open(card->dev);
3415 else
3416 dev_open(card->dev);
3417 qeth_l3_set_multicast_list(card->dev);
3418 rtnl_unlock();
3419 }
3420 /* let user_space know that device is online */
3421 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3422 mutex_unlock(&card->conf_mutex);
3423 mutex_unlock(&card->discipline_mutex);
3424 return 0;
3425 out_remove:
3426 qeth_l3_stop_card(card, 0);
3427 ccw_device_set_offline(CARD_DDEV(card));
3428 ccw_device_set_offline(CARD_WDEV(card));
3429 ccw_device_set_offline(CARD_RDEV(card));
3430 if (recover_flag == CARD_STATE_RECOVER)
3431 card->state = CARD_STATE_RECOVER;
3432 else
3433 card->state = CARD_STATE_DOWN;
3434 mutex_unlock(&card->conf_mutex);
3435 mutex_unlock(&card->discipline_mutex);
3436 return rc;
3437 }
3438
3439 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3440 {
3441 return __qeth_l3_set_online(gdev, 0);
3442 }
3443
3444 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3445 int recovery_mode)
3446 {
3447 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3448 int rc = 0, rc2 = 0, rc3 = 0;
3449 enum qeth_card_states recover_flag;
3450
3451 mutex_lock(&card->discipline_mutex);
3452 mutex_lock(&card->conf_mutex);
3453 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3454 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3455
3456 if (card->dev && netif_carrier_ok(card->dev))
3457 netif_carrier_off(card->dev);
3458 recover_flag = card->state;
3459 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3460 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3461 card->info.hwtrap = 1;
3462 }
3463 qeth_l3_stop_card(card, recovery_mode);
3464 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3465 rtnl_lock();
3466 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3467 rtnl_unlock();
3468 }
3469 rc = ccw_device_set_offline(CARD_DDEV(card));
3470 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3471 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3472 if (!rc)
3473 rc = (rc2) ? rc2 : rc3;
3474 if (rc)
3475 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3476 if (recover_flag == CARD_STATE_UP)
3477 card->state = CARD_STATE_RECOVER;
3478 /* let user_space know that device is offline */
3479 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3480 mutex_unlock(&card->conf_mutex);
3481 mutex_unlock(&card->discipline_mutex);
3482 return 0;
3483 }
3484
3485 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3486 {
3487 return __qeth_l3_set_offline(cgdev, 0);
3488 }
3489
3490 static int qeth_l3_recover(void *ptr)
3491 {
3492 struct qeth_card *card;
3493 int rc = 0;
3494
3495 card = (struct qeth_card *) ptr;
3496 QETH_CARD_TEXT(card, 2, "recover1");
3497 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3498 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3499 return 0;
3500 QETH_CARD_TEXT(card, 2, "recover2");
3501 dev_warn(&card->gdev->dev,
3502 "A recovery process has been started for the device\n");
3503 __qeth_l3_set_offline(card->gdev, 1);
3504 rc = __qeth_l3_set_online(card->gdev, 1);
3505 if (!rc)
3506 dev_info(&card->gdev->dev,
3507 "Device successfully recovered!\n");
3508 else {
3509 rtnl_lock();
3510 dev_close(card->dev);
3511 rtnl_unlock();
3512 dev_warn(&card->gdev->dev, "The qeth device driver "
3513 "failed to recover an error on the device\n");
3514 }
3515 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3516 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3517 return 0;
3518 }
3519
3520 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3521 {
3522 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3523 qeth_set_allowed_threads(card, 0, 1);
3524 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3525 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3526 qeth_qdio_clear_card(card, 0);
3527 qeth_clear_qdio_buffers(card);
3528 }
3529
3530 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3531 {
3532 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3533
3534 if (card->dev)
3535 netif_device_detach(card->dev);
3536 qeth_set_allowed_threads(card, 0, 1);
3537 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3538 if (gdev->state == CCWGROUP_OFFLINE)
3539 return 0;
3540 if (card->state == CARD_STATE_UP) {
3541 if (card->info.hwtrap)
3542 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3543 __qeth_l3_set_offline(card->gdev, 1);
3544 } else
3545 __qeth_l3_set_offline(card->gdev, 0);
3546 return 0;
3547 }
3548
3549 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3550 {
3551 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3552 int rc = 0;
3553
3554 if (gdev->state == CCWGROUP_OFFLINE)
3555 goto out;
3556
3557 if (card->state == CARD_STATE_RECOVER) {
3558 rc = __qeth_l3_set_online(card->gdev, 1);
3559 if (rc) {
3560 rtnl_lock();
3561 dev_close(card->dev);
3562 rtnl_unlock();
3563 }
3564 } else
3565 rc = __qeth_l3_set_online(card->gdev, 0);
3566 out:
3567 qeth_set_allowed_threads(card, 0xffffffff, 0);
3568 if (card->dev)
3569 netif_device_attach(card->dev);
3570 if (rc)
3571 dev_warn(&card->gdev->dev, "The qeth device driver "
3572 "failed to recover an error on the device\n");
3573 return rc;
3574 }
3575
3576 struct qeth_discipline qeth_l3_discipline = {
3577 .start_poll = qeth_qdio_start_poll,
3578 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3579 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3580 .recover = qeth_l3_recover,
3581 .setup = qeth_l3_probe_device,
3582 .remove = qeth_l3_remove_device,
3583 .set_online = qeth_l3_set_online,
3584 .set_offline = qeth_l3_set_offline,
3585 .shutdown = qeth_l3_shutdown,
3586 .freeze = qeth_l3_pm_suspend,
3587 .thaw = qeth_l3_pm_resume,
3588 .restore = qeth_l3_pm_resume,
3589 };
3590 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3591
3592 static int qeth_l3_ip_event(struct notifier_block *this,
3593 unsigned long event, void *ptr)
3594 {
3595 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3596 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3597 struct qeth_ipaddr *addr;
3598 struct qeth_card *card;
3599
3600 if (dev_net(dev) != &init_net)
3601 return NOTIFY_DONE;
3602
3603 card = qeth_l3_get_card_from_dev(dev);
3604 if (!card)
3605 return NOTIFY_DONE;
3606 QETH_CARD_TEXT(card, 3, "ipevent");
3607
3608 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3609 if (addr != NULL) {
3610 addr->u.a4.addr = ifa->ifa_address;
3611 addr->u.a4.mask = ifa->ifa_mask;
3612 addr->type = QETH_IP_TYPE_NORMAL;
3613 } else
3614 goto out;
3615
3616 switch (event) {
3617 case NETDEV_UP:
3618 if (!qeth_l3_add_ip(card, addr))
3619 kfree(addr);
3620 break;
3621 case NETDEV_DOWN:
3622 if (!qeth_l3_delete_ip(card, addr))
3623 kfree(addr);
3624 break;
3625 default:
3626 break;
3627 }
3628 qeth_l3_set_ip_addr_list(card);
3629 out:
3630 return NOTIFY_DONE;
3631 }
3632
3633 static struct notifier_block qeth_l3_ip_notifier = {
3634 qeth_l3_ip_event,
3635 NULL,
3636 };
3637
3638 #ifdef CONFIG_QETH_IPV6
3639 /**
3640 * IPv6 event handler
3641 */
3642 static int qeth_l3_ip6_event(struct notifier_block *this,
3643 unsigned long event, void *ptr)
3644 {
3645 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3646 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3647 struct qeth_ipaddr *addr;
3648 struct qeth_card *card;
3649
3650 card = qeth_l3_get_card_from_dev(dev);
3651 if (!card)
3652 return NOTIFY_DONE;
3653 QETH_CARD_TEXT(card, 3, "ip6event");
3654 if (!qeth_is_supported(card, IPA_IPV6))
3655 return NOTIFY_DONE;
3656
3657 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3658 if (addr != NULL) {
3659 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3660 addr->u.a6.pfxlen = ifa->prefix_len;
3661 addr->type = QETH_IP_TYPE_NORMAL;
3662 } else
3663 goto out;
3664
3665 switch (event) {
3666 case NETDEV_UP:
3667 if (!qeth_l3_add_ip(card, addr))
3668 kfree(addr);
3669 break;
3670 case NETDEV_DOWN:
3671 if (!qeth_l3_delete_ip(card, addr))
3672 kfree(addr);
3673 break;
3674 default:
3675 break;
3676 }
3677 qeth_l3_set_ip_addr_list(card);
3678 out:
3679 return NOTIFY_DONE;
3680 }
3681
3682 static struct notifier_block qeth_l3_ip6_notifier = {
3683 qeth_l3_ip6_event,
3684 NULL,
3685 };
3686 #endif
3687
3688 static int qeth_l3_register_notifiers(void)
3689 {
3690 int rc;
3691
3692 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3693 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3694 if (rc)
3695 return rc;
3696 #ifdef CONFIG_QETH_IPV6
3697 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3698 if (rc) {
3699 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3700 return rc;
3701 }
3702 #else
3703 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3704 #endif
3705 return 0;
3706 }
3707
3708 static void qeth_l3_unregister_notifiers(void)
3709 {
3710
3711 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3712 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3713 #ifdef CONFIG_QETH_IPV6
3714 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3715 #endif /* QETH_IPV6 */
3716 }
3717
3718 static int __init qeth_l3_init(void)
3719 {
3720 int rc = 0;
3721
3722 pr_info("register layer 3 discipline\n");
3723 rc = qeth_l3_register_notifiers();
3724 return rc;
3725 }
3726
3727 static void __exit qeth_l3_exit(void)
3728 {
3729 qeth_l3_unregister_notifiers();
3730 pr_info("unregister layer 3 discipline\n");
3731 }
3732
3733 module_init(qeth_l3_init);
3734 module_exit(qeth_l3_exit);
3735 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3736 MODULE_DESCRIPTION("qeth layer 3 discipline");
3737 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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