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ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l3_main.c
blobe2c9ac5fcb363a8597f8c9635cb17728011e6c44
1 /*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/etherdevice.h>
20 #include <linux/mii.h>
21 #include <linux/ip.h>
22 #include <linux/ipv6.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25 #include <linux/slab.h>
26
27 #include <net/ip.h>
28 #include <net/arp.h>
29 #include <net/ip6_checksum.h>
30
31 #include "qeth_l3.h"
32
33
34 static int qeth_l3_set_offline(struct ccwgroup_device *);
35 static int qeth_l3_recover(void *);
36 static int qeth_l3_stop(struct net_device *);
37 static void qeth_l3_set_multicast_list(struct net_device *);
38 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
39 static int qeth_l3_register_addr_entry(struct qeth_card *,
40 struct qeth_ipaddr *);
41 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
42 struct qeth_ipaddr *);
43 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
44 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
45
46 static int qeth_l3_isxdigit(char *buf)
47 {
48 while (*buf) {
49 if (!isxdigit(*buf++))
50 return 0;
51 }
52 return 1;
53 }
54
55 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
56 {
57 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
58 }
59
60 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
61 {
62 int count = 0, rc = 0;
63 int in[4];
64 char c;
65
66 rc = sscanf(buf, "%u.%u.%u.%u%c",
67 &in[0], &in[1], &in[2], &in[3], &c);
68 if (rc != 4 && (rc != 5 || c != '\n'))
69 return -EINVAL;
70 for (count = 0; count < 4; count++) {
71 if (in[count] > 255)
72 return -EINVAL;
73 addr[count] = in[count];
74 }
75 return 0;
76 }
77
78 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
79 {
80 sprintf(buf, "%pI6", addr);
81 }
82
83 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
84 {
85 const char *end, *end_tmp, *start;
86 __u16 *in;
87 char num[5];
88 int num2, cnt, out, found, save_cnt;
89 unsigned short in_tmp[8] = {0, };
90
91 cnt = out = found = save_cnt = num2 = 0;
92 end = start = buf;
93 in = (__u16 *) addr;
94 memset(in, 0, 16);
95 while (*end) {
96 end = strchr(start, ':');
97 if (end == NULL) {
98 end = buf + strlen(buf);
99 end_tmp = strchr(start, '\n');
100 if (end_tmp != NULL)
101 end = end_tmp;
102 out = 1;
103 }
104 if ((end - start)) {
105 memset(num, 0, 5);
106 if ((end - start) > 4)
107 return -EINVAL;
108 memcpy(num, start, end - start);
109 if (!qeth_l3_isxdigit(num))
110 return -EINVAL;
111 sscanf(start, "%x", &num2);
112 if (found)
113 in_tmp[save_cnt++] = num2;
114 else
115 in[cnt++] = num2;
116 if (out)
117 break;
118 } else {
119 if (found)
120 return -EINVAL;
121 found = 1;
122 }
123 start = ++end;
124 }
125 if (cnt + save_cnt > 8)
126 return -EINVAL;
127 cnt = 7;
128 while (save_cnt)
129 in[cnt--] = in_tmp[--save_cnt];
130 return 0;
131 }
132
133 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
134 char *buf)
135 {
136 if (proto == QETH_PROT_IPV4)
137 qeth_l3_ipaddr4_to_string(addr, buf);
138 else if (proto == QETH_PROT_IPV6)
139 qeth_l3_ipaddr6_to_string(addr, buf);
140 }
141
142 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
143 __u8 *addr)
144 {
145 if (proto == QETH_PROT_IPV4)
146 return qeth_l3_string_to_ipaddr4(buf, addr);
147 else if (proto == QETH_PROT_IPV6)
148 return qeth_l3_string_to_ipaddr6(buf, addr);
149 else
150 return -EINVAL;
151 }
152
153 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
154 {
155 int i, j;
156 u8 octet;
157
158 for (i = 0; i < len; ++i) {
159 octet = addr[i];
160 for (j = 7; j >= 0; --j) {
161 bits[i*8 + j] = octet & 1;
162 octet >>= 1;
163 }
164 }
165 }
166
167 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
168 struct qeth_ipaddr *addr)
169 {
170 struct qeth_ipato_entry *ipatoe;
171 u8 addr_bits[128] = {0, };
172 u8 ipatoe_bits[128] = {0, };
173 int rc = 0;
174
175 if (!card->ipato.enabled)
176 return 0;
177
178 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
179 (addr->proto == QETH_PROT_IPV4)? 4:16);
180 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
181 if (addr->proto != ipatoe->proto)
182 continue;
183 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
184 (ipatoe->proto == QETH_PROT_IPV4) ?
185 4 : 16);
186 if (addr->proto == QETH_PROT_IPV4)
187 rc = !memcmp(addr_bits, ipatoe_bits,
188 min(32, ipatoe->mask_bits));
189 else
190 rc = !memcmp(addr_bits, ipatoe_bits,
191 min(128, ipatoe->mask_bits));
192 if (rc)
193 break;
194 }
195 /* invert? */
196 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
197 rc = !rc;
198 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
199 rc = !rc;
200
201 return rc;
202 }
203
204 /*
205 * Add IP to be added to todo list. If there is already an "add todo"
206 * in this list we just incremenent the reference count.
207 * Returns 0 if we just incremented reference count.
208 */
209 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
210 struct qeth_ipaddr *addr, int add)
211 {
212 struct qeth_ipaddr *tmp, *t;
213 int found = 0;
214
215 if (card->options.sniffer)
216 return 0;
217 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
218 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
219 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
220 return 0;
221 if ((tmp->proto == QETH_PROT_IPV4) &&
222 (addr->proto == QETH_PROT_IPV4) &&
223 (tmp->type == addr->type) &&
224 (tmp->is_multicast == addr->is_multicast) &&
225 (tmp->u.a4.addr == addr->u.a4.addr) &&
226 (tmp->u.a4.mask == addr->u.a4.mask)) {
227 found = 1;
228 break;
229 }
230 if ((tmp->proto == QETH_PROT_IPV6) &&
231 (addr->proto == QETH_PROT_IPV6) &&
232 (tmp->type == addr->type) &&
233 (tmp->is_multicast == addr->is_multicast) &&
234 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
235 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
236 sizeof(struct in6_addr)) == 0)) {
237 found = 1;
238 break;
239 }
240 }
241 if (found) {
242 if (addr->users != 0)
243 tmp->users += addr->users;
244 else
245 tmp->users += add ? 1 : -1;
246 if (tmp->users == 0) {
247 list_del(&tmp->entry);
248 kfree(tmp);
249 }
250 return 0;
251 } else {
252 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
253 list_add(&addr->entry, card->ip_tbd_list);
254 else {
255 if (addr->users == 0)
256 addr->users += add ? 1 : -1;
257 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
258 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
259 QETH_CARD_TEXT(card, 2, "tkovaddr");
260 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
261 }
262 list_add_tail(&addr->entry, card->ip_tbd_list);
263 }
264 return 1;
265 }
266 }
267
268 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
269 {
270 unsigned long flags;
271 int rc = 0;
272
273 QETH_CARD_TEXT(card, 4, "delip");
274
275 if (addr->proto == QETH_PROT_IPV4)
276 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
277 else {
278 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
279 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
280 }
281 spin_lock_irqsave(&card->ip_lock, flags);
282 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
283 spin_unlock_irqrestore(&card->ip_lock, flags);
284 return rc;
285 }
286
287 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
288 {
289 unsigned long flags;
290 int rc = 0;
291
292 QETH_CARD_TEXT(card, 4, "addip");
293 if (addr->proto == QETH_PROT_IPV4)
294 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
295 else {
296 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
297 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
298 }
299 spin_lock_irqsave(&card->ip_lock, flags);
300 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
301 spin_unlock_irqrestore(&card->ip_lock, flags);
302 return rc;
303 }
304
305
306 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
307 enum qeth_prot_versions prot)
308 {
309 struct qeth_ipaddr *addr;
310
311 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
312 if (addr == NULL) {
313 return NULL;
314 }
315 addr->type = QETH_IP_TYPE_NORMAL;
316 addr->proto = prot;
317 return addr;
318 }
319
320 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
321 {
322 struct qeth_ipaddr *iptodo;
323 unsigned long flags;
324
325 QETH_CARD_TEXT(card, 4, "delmc");
326 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
327 if (!iptodo) {
328 QETH_CARD_TEXT(card, 2, "dmcnomem");
329 return;
330 }
331 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
332 spin_lock_irqsave(&card->ip_lock, flags);
333 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
334 kfree(iptodo);
335 spin_unlock_irqrestore(&card->ip_lock, flags);
336 }
337
338 /*
339 * Add/remove address to/from card's ip list, i.e. try to add or remove
340 * reference to/from an IP address that is already registered on the card.
341 * Returns:
342 * 0 address was on card and its reference count has been adjusted,
343 * but is still > 0, so nothing has to be done
344 * also returns 0 if card was not on card and the todo was to delete
345 * the address -> there is also nothing to be done
346 * 1 address was not on card and the todo is to add it to the card's ip
347 * list
348 * -1 address was on card and its reference count has been decremented
349 * to <= 0 by the todo -> address must be removed from card
350 */
351 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
352 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
353 {
354 struct qeth_ipaddr *addr;
355 int found = 0;
356
357 list_for_each_entry(addr, &card->ip_list, entry) {
358 if ((addr->proto == QETH_PROT_IPV4) &&
359 (todo->proto == QETH_PROT_IPV4) &&
360 (addr->type == todo->type) &&
361 (addr->u.a4.addr == todo->u.a4.addr) &&
362 (addr->u.a4.mask == todo->u.a4.mask)) {
363 found = 1;
364 break;
365 }
366 if ((addr->proto == QETH_PROT_IPV6) &&
367 (todo->proto == QETH_PROT_IPV6) &&
368 (addr->type == todo->type) &&
369 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
370 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
371 sizeof(struct in6_addr)) == 0)) {
372 found = 1;
373 break;
374 }
375 }
376 if (found) {
377 addr->users += todo->users;
378 if (addr->users <= 0) {
379 *__addr = addr;
380 return -1;
381 } else {
382 /* for VIPA and RXIP limit refcount to 1 */
383 if (addr->type != QETH_IP_TYPE_NORMAL)
384 addr->users = 1;
385 return 0;
386 }
387 }
388 if (todo->users > 0) {
389 /* for VIPA and RXIP limit refcount to 1 */
390 if (todo->type != QETH_IP_TYPE_NORMAL)
391 todo->users = 1;
392 return 1;
393 } else
394 return 0;
395 }
396
397 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
398 unsigned long *flags)
399 {
400 struct list_head fail_list;
401 struct qeth_ipaddr *addr, *tmp;
402 int rc;
403
404 INIT_LIST_HEAD(&fail_list);
405 again:
406 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
407 if (addr->is_multicast) {
408 list_del(&addr->entry);
409 spin_unlock_irqrestore(&card->ip_lock, *flags);
410 rc = qeth_l3_deregister_addr_entry(card, addr);
411 spin_lock_irqsave(&card->ip_lock, *flags);
412 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
413 kfree(addr);
414 else
415 list_add_tail(&addr->entry, &fail_list);
416 goto again;
417 }
418 }
419 list_splice(&fail_list, &card->ip_list);
420 }
421
422 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
423 {
424 struct list_head *tbd_list;
425 struct qeth_ipaddr *todo, *addr;
426 unsigned long flags;
427 int rc;
428
429 QETH_CARD_TEXT(card, 2, "sdiplist");
430 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
431
432 if ((card->state != CARD_STATE_UP &&
433 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
434 return;
435 }
436
437 spin_lock_irqsave(&card->ip_lock, flags);
438 tbd_list = card->ip_tbd_list;
439 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
440 if (!card->ip_tbd_list) {
441 QETH_CARD_TEXT(card, 0, "silnomem");
442 card->ip_tbd_list = tbd_list;
443 spin_unlock_irqrestore(&card->ip_lock, flags);
444 return;
445 } else
446 INIT_LIST_HEAD(card->ip_tbd_list);
447
448 while (!list_empty(tbd_list)) {
449 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
450 list_del(&todo->entry);
451 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
452 __qeth_l3_delete_all_mc(card, &flags);
453 kfree(todo);
454 continue;
455 }
456 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
457 if (rc == 0) {
458 /* nothing to be done; only adjusted refcount */
459 kfree(todo);
460 } else if (rc == 1) {
461 /* new entry to be added to on-card list */
462 spin_unlock_irqrestore(&card->ip_lock, flags);
463 rc = qeth_l3_register_addr_entry(card, todo);
464 spin_lock_irqsave(&card->ip_lock, flags);
465 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
466 list_add_tail(&todo->entry, &card->ip_list);
467 else
468 kfree(todo);
469 } else if (rc == -1) {
470 /* on-card entry to be removed */
471 list_del_init(&addr->entry);
472 spin_unlock_irqrestore(&card->ip_lock, flags);
473 rc = qeth_l3_deregister_addr_entry(card, addr);
474 spin_lock_irqsave(&card->ip_lock, flags);
475 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
476 kfree(addr);
477 else
478 list_add_tail(&addr->entry, &card->ip_list);
479 kfree(todo);
480 }
481 }
482 spin_unlock_irqrestore(&card->ip_lock, flags);
483 kfree(tbd_list);
484 }
485
486 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
487 {
488 struct qeth_ipaddr *addr, *tmp;
489 unsigned long flags;
490
491 QETH_CARD_TEXT(card, 4, "clearip");
492 if (recover && card->options.sniffer)
493 return;
494 spin_lock_irqsave(&card->ip_lock, flags);
495 /* clear todo list */
496 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
497 list_del(&addr->entry);
498 kfree(addr);
499 }
500
501 while (!list_empty(&card->ip_list)) {
502 addr = list_entry(card->ip_list.next,
503 struct qeth_ipaddr, entry);
504 list_del_init(&addr->entry);
505 if (!recover || addr->is_multicast) {
506 kfree(addr);
507 continue;
508 }
509 list_add_tail(&addr->entry, card->ip_tbd_list);
510 }
511 spin_unlock_irqrestore(&card->ip_lock, flags);
512 }
513
514 static int qeth_l3_address_exists_in_list(struct list_head *list,
515 struct qeth_ipaddr *addr, int same_type)
516 {
517 struct qeth_ipaddr *tmp;
518
519 list_for_each_entry(tmp, list, entry) {
520 if ((tmp->proto == QETH_PROT_IPV4) &&
521 (addr->proto == QETH_PROT_IPV4) &&
522 ((same_type && (tmp->type == addr->type)) ||
523 (!same_type && (tmp->type != addr->type))) &&
524 (tmp->u.a4.addr == addr->u.a4.addr))
525 return 1;
526
527 if ((tmp->proto == QETH_PROT_IPV6) &&
528 (addr->proto == QETH_PROT_IPV6) &&
529 ((same_type && (tmp->type == addr->type)) ||
530 (!same_type && (tmp->type != addr->type))) &&
531 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
532 sizeof(struct in6_addr)) == 0))
533 return 1;
534
535 }
536 return 0;
537 }
538
539 static int qeth_l3_send_setdelmc(struct qeth_card *card,
540 struct qeth_ipaddr *addr, int ipacmd)
541 {
542 int rc;
543 struct qeth_cmd_buffer *iob;
544 struct qeth_ipa_cmd *cmd;
545
546 QETH_CARD_TEXT(card, 4, "setdelmc");
547
548 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
549 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
550 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
551 if (addr->proto == QETH_PROT_IPV6)
552 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
553 sizeof(struct in6_addr));
554 else
555 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
556
557 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
558
559 return rc;
560 }
561
562 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
563 {
564 int i, j;
565 for (i = 0; i < 16; i++) {
566 j = (len) - (i * 8);
567 if (j >= 8)
568 netmask[i] = 0xff;
569 else if (j > 0)
570 netmask[i] = (u8)(0xFF00 >> j);
571 else
572 netmask[i] = 0;
573 }
574 }
575
576 static int qeth_l3_send_setdelip(struct qeth_card *card,
577 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
578 {
579 int rc;
580 struct qeth_cmd_buffer *iob;
581 struct qeth_ipa_cmd *cmd;
582 __u8 netmask[16];
583
584 QETH_CARD_TEXT(card, 4, "setdelip");
585 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
586
587 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
588 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
589 if (addr->proto == QETH_PROT_IPV6) {
590 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
591 sizeof(struct in6_addr));
592 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
593 memcpy(cmd->data.setdelip6.mask, netmask,
594 sizeof(struct in6_addr));
595 cmd->data.setdelip6.flags = flags;
596 } else {
597 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
598 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
599 cmd->data.setdelip4.flags = flags;
600 }
601
602 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
603
604 return rc;
605 }
606
607 static int qeth_l3_send_setrouting(struct qeth_card *card,
608 enum qeth_routing_types type, enum qeth_prot_versions prot)
609 {
610 int rc;
611 struct qeth_ipa_cmd *cmd;
612 struct qeth_cmd_buffer *iob;
613
614 QETH_CARD_TEXT(card, 4, "setroutg");
615 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
616 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
617 cmd->data.setrtg.type = (type);
618 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
619
620 return rc;
621 }
622
623 static void qeth_l3_correct_routing_type(struct qeth_card *card,
624 enum qeth_routing_types *type, enum qeth_prot_versions prot)
625 {
626 if (card->info.type == QETH_CARD_TYPE_IQD) {
627 switch (*type) {
628 case NO_ROUTER:
629 case PRIMARY_CONNECTOR:
630 case SECONDARY_CONNECTOR:
631 case MULTICAST_ROUTER:
632 return;
633 default:
634 goto out_inval;
635 }
636 } else {
637 switch (*type) {
638 case NO_ROUTER:
639 case PRIMARY_ROUTER:
640 case SECONDARY_ROUTER:
641 return;
642 case MULTICAST_ROUTER:
643 if (qeth_is_ipafunc_supported(card, prot,
644 IPA_OSA_MC_ROUTER))
645 return;
646 default:
647 goto out_inval;
648 }
649 }
650 out_inval:
651 *type = NO_ROUTER;
652 }
653
654 int qeth_l3_setrouting_v4(struct qeth_card *card)
655 {
656 int rc;
657
658 QETH_CARD_TEXT(card, 3, "setrtg4");
659
660 qeth_l3_correct_routing_type(card, &card->options.route4.type,
661 QETH_PROT_IPV4);
662
663 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
664 QETH_PROT_IPV4);
665 if (rc) {
666 card->options.route4.type = NO_ROUTER;
667 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
668 " on %s. Type set to 'no router'.\n", rc,
669 QETH_CARD_IFNAME(card));
670 }
671 return rc;
672 }
673
674 int qeth_l3_setrouting_v6(struct qeth_card *card)
675 {
676 int rc = 0;
677
678 QETH_CARD_TEXT(card, 3, "setrtg6");
679 #ifdef CONFIG_QETH_IPV6
680
681 if (!qeth_is_supported(card, IPA_IPV6))
682 return 0;
683 qeth_l3_correct_routing_type(card, &card->options.route6.type,
684 QETH_PROT_IPV6);
685
686 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
687 QETH_PROT_IPV6);
688 if (rc) {
689 card->options.route6.type = NO_ROUTER;
690 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
691 " on %s. Type set to 'no router'.\n", rc,
692 QETH_CARD_IFNAME(card));
693 }
694 #endif
695 return rc;
696 }
697
698 /*
699 * IP address takeover related functions
700 */
701 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
702 {
703
704 struct qeth_ipato_entry *ipatoe, *tmp;
705 unsigned long flags;
706
707 spin_lock_irqsave(&card->ip_lock, flags);
708 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
709 list_del(&ipatoe->entry);
710 kfree(ipatoe);
711 }
712 spin_unlock_irqrestore(&card->ip_lock, flags);
713 }
714
715 int qeth_l3_add_ipato_entry(struct qeth_card *card,
716 struct qeth_ipato_entry *new)
717 {
718 struct qeth_ipato_entry *ipatoe;
719 unsigned long flags;
720 int rc = 0;
721
722 QETH_CARD_TEXT(card, 2, "addipato");
723 spin_lock_irqsave(&card->ip_lock, flags);
724 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
725 if (ipatoe->proto != new->proto)
726 continue;
727 if (!memcmp(ipatoe->addr, new->addr,
728 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
729 (ipatoe->mask_bits == new->mask_bits)) {
730 rc = -EEXIST;
731 break;
732 }
733 }
734 if (!rc)
735 list_add_tail(&new->entry, &card->ipato.entries);
736
737 spin_unlock_irqrestore(&card->ip_lock, flags);
738 return rc;
739 }
740
741 void qeth_l3_del_ipato_entry(struct qeth_card *card,
742 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
743 {
744 struct qeth_ipato_entry *ipatoe, *tmp;
745 unsigned long flags;
746
747 QETH_CARD_TEXT(card, 2, "delipato");
748 spin_lock_irqsave(&card->ip_lock, flags);
749 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
750 if (ipatoe->proto != proto)
751 continue;
752 if (!memcmp(ipatoe->addr, addr,
753 (proto == QETH_PROT_IPV4)? 4:16) &&
754 (ipatoe->mask_bits == mask_bits)) {
755 list_del(&ipatoe->entry);
756 kfree(ipatoe);
757 }
758 }
759 spin_unlock_irqrestore(&card->ip_lock, flags);
760 }
761
762 /*
763 * VIPA related functions
764 */
765 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
766 const u8 *addr)
767 {
768 struct qeth_ipaddr *ipaddr;
769 unsigned long flags;
770 int rc = 0;
771
772 ipaddr = qeth_l3_get_addr_buffer(proto);
773 if (ipaddr) {
774 if (proto == QETH_PROT_IPV4) {
775 QETH_CARD_TEXT(card, 2, "addvipa4");
776 memcpy(&ipaddr->u.a4.addr, addr, 4);
777 ipaddr->u.a4.mask = 0;
778 } else if (proto == QETH_PROT_IPV6) {
779 QETH_CARD_TEXT(card, 2, "addvipa6");
780 memcpy(&ipaddr->u.a6.addr, addr, 16);
781 ipaddr->u.a6.pfxlen = 0;
782 }
783 ipaddr->type = QETH_IP_TYPE_VIPA;
784 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
785 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
786 } else
787 return -ENOMEM;
788 spin_lock_irqsave(&card->ip_lock, flags);
789 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
790 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
791 rc = -EEXIST;
792 spin_unlock_irqrestore(&card->ip_lock, flags);
793 if (rc) {
794 return rc;
795 }
796 if (!qeth_l3_add_ip(card, ipaddr))
797 kfree(ipaddr);
798 qeth_l3_set_ip_addr_list(card);
799 return rc;
800 }
801
802 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
803 const u8 *addr)
804 {
805 struct qeth_ipaddr *ipaddr;
806
807 ipaddr = qeth_l3_get_addr_buffer(proto);
808 if (ipaddr) {
809 if (proto == QETH_PROT_IPV4) {
810 QETH_CARD_TEXT(card, 2, "delvipa4");
811 memcpy(&ipaddr->u.a4.addr, addr, 4);
812 ipaddr->u.a4.mask = 0;
813 } else if (proto == QETH_PROT_IPV6) {
814 QETH_CARD_TEXT(card, 2, "delvipa6");
815 memcpy(&ipaddr->u.a6.addr, addr, 16);
816 ipaddr->u.a6.pfxlen = 0;
817 }
818 ipaddr->type = QETH_IP_TYPE_VIPA;
819 } else
820 return;
821 if (!qeth_l3_delete_ip(card, ipaddr))
822 kfree(ipaddr);
823 qeth_l3_set_ip_addr_list(card);
824 }
825
826 /*
827 * proxy ARP related functions
828 */
829 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
830 const u8 *addr)
831 {
832 struct qeth_ipaddr *ipaddr;
833 unsigned long flags;
834 int rc = 0;
835
836 ipaddr = qeth_l3_get_addr_buffer(proto);
837 if (ipaddr) {
838 if (proto == QETH_PROT_IPV4) {
839 QETH_CARD_TEXT(card, 2, "addrxip4");
840 memcpy(&ipaddr->u.a4.addr, addr, 4);
841 ipaddr->u.a4.mask = 0;
842 } else if (proto == QETH_PROT_IPV6) {
843 QETH_CARD_TEXT(card, 2, "addrxip6");
844 memcpy(&ipaddr->u.a6.addr, addr, 16);
845 ipaddr->u.a6.pfxlen = 0;
846 }
847 ipaddr->type = QETH_IP_TYPE_RXIP;
848 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
849 ipaddr->del_flags = 0;
850 } else
851 return -ENOMEM;
852 spin_lock_irqsave(&card->ip_lock, flags);
853 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
854 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
855 rc = -EEXIST;
856 spin_unlock_irqrestore(&card->ip_lock, flags);
857 if (rc) {
858 return rc;
859 }
860 if (!qeth_l3_add_ip(card, ipaddr))
861 kfree(ipaddr);
862 qeth_l3_set_ip_addr_list(card);
863 return 0;
864 }
865
866 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
867 const u8 *addr)
868 {
869 struct qeth_ipaddr *ipaddr;
870
871 ipaddr = qeth_l3_get_addr_buffer(proto);
872 if (ipaddr) {
873 if (proto == QETH_PROT_IPV4) {
874 QETH_CARD_TEXT(card, 2, "addrxip4");
875 memcpy(&ipaddr->u.a4.addr, addr, 4);
876 ipaddr->u.a4.mask = 0;
877 } else if (proto == QETH_PROT_IPV6) {
878 QETH_CARD_TEXT(card, 2, "addrxip6");
879 memcpy(&ipaddr->u.a6.addr, addr, 16);
880 ipaddr->u.a6.pfxlen = 0;
881 }
882 ipaddr->type = QETH_IP_TYPE_RXIP;
883 } else
884 return;
885 if (!qeth_l3_delete_ip(card, ipaddr))
886 kfree(ipaddr);
887 qeth_l3_set_ip_addr_list(card);
888 }
889
890 static int qeth_l3_register_addr_entry(struct qeth_card *card,
891 struct qeth_ipaddr *addr)
892 {
893 char buf[50];
894 int rc = 0;
895 int cnt = 3;
896
897 if (addr->proto == QETH_PROT_IPV4) {
898 QETH_CARD_TEXT(card, 2, "setaddr4");
899 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
900 } else if (addr->proto == QETH_PROT_IPV6) {
901 QETH_CARD_TEXT(card, 2, "setaddr6");
902 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
903 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
904 } else {
905 QETH_CARD_TEXT(card, 2, "setaddr?");
906 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
907 }
908 do {
909 if (addr->is_multicast)
910 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
911 else
912 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
913 addr->set_flags);
914 if (rc)
915 QETH_CARD_TEXT(card, 2, "failed");
916 } while ((--cnt > 0) && rc);
917 if (rc) {
918 QETH_CARD_TEXT(card, 2, "FAILED");
919 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
920 dev_warn(&card->gdev->dev,
921 "Registering IP address %s failed\n", buf);
922 }
923 return rc;
924 }
925
926 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
927 struct qeth_ipaddr *addr)
928 {
929 int rc = 0;
930
931 if (addr->proto == QETH_PROT_IPV4) {
932 QETH_CARD_TEXT(card, 2, "deladdr4");
933 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
934 } else if (addr->proto == QETH_PROT_IPV6) {
935 QETH_CARD_TEXT(card, 2, "deladdr6");
936 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
937 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
938 } else {
939 QETH_CARD_TEXT(card, 2, "deladdr?");
940 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
941 }
942 if (addr->is_multicast)
943 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
944 else
945 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
946 addr->del_flags);
947 if (rc)
948 QETH_CARD_TEXT(card, 2, "failed");
949
950 return rc;
951 }
952
953 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
954 {
955 if (cast_type == RTN_MULTICAST)
956 return QETH_CAST_MULTICAST;
957 if (cast_type == RTN_BROADCAST)
958 return QETH_CAST_BROADCAST;
959 return QETH_CAST_UNICAST;
960 }
961
962 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
963 {
964 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
965 if (cast_type == RTN_MULTICAST)
966 return ct | QETH_CAST_MULTICAST;
967 if (cast_type == RTN_ANYCAST)
968 return ct | QETH_CAST_ANYCAST;
969 if (cast_type == RTN_BROADCAST)
970 return ct | QETH_CAST_BROADCAST;
971 return ct | QETH_CAST_UNICAST;
972 }
973
974 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
975 __u32 mode)
976 {
977 int rc;
978 struct qeth_cmd_buffer *iob;
979 struct qeth_ipa_cmd *cmd;
980
981 QETH_CARD_TEXT(card, 4, "adpmode");
982
983 iob = qeth_get_adapter_cmd(card, command,
984 sizeof(struct qeth_ipacmd_setadpparms));
985 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
986 cmd->data.setadapterparms.data.mode = mode;
987 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
988 NULL);
989 return rc;
990 }
991
992 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
993 {
994 int rc;
995
996 QETH_CARD_TEXT(card, 4, "adphstr");
997
998 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
999 rc = qeth_l3_send_setadp_mode(card,
1000 IPA_SETADP_SET_BROADCAST_MODE,
1001 card->options.broadcast_mode);
1002 if (rc)
1003 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1004 "device %s: x%x\n",
1005 CARD_BUS_ID(card), rc);
1006 rc = qeth_l3_send_setadp_mode(card,
1007 IPA_SETADP_ALTER_MAC_ADDRESS,
1008 card->options.macaddr_mode);
1009 if (rc)
1010 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1011 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1012 return rc;
1013 }
1014 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1015 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1016 "to set broadcast mode, using ALLRINGS "
1017 "on device %s:\n", CARD_BUS_ID(card));
1018 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1019 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1020 "to set macaddr mode, using NONCANONICAL "
1021 "on device %s:\n", CARD_BUS_ID(card));
1022 return 0;
1023 }
1024
1025 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1026 {
1027 int rc;
1028
1029 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1030
1031 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1032 dev_info(&card->gdev->dev,
1033 "set adapter parameters not supported.\n");
1034 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1035 return 0;
1036 }
1037 rc = qeth_query_setadapterparms(card);
1038 if (rc) {
1039 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1040 "0x%x\n", dev_name(&card->gdev->dev), rc);
1041 return rc;
1042 }
1043 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1044 rc = qeth_setadpparms_change_macaddr(card);
1045 if (rc)
1046 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1047 " address failed\n");
1048 }
1049
1050 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1051 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1052 rc = qeth_l3_setadapter_hstr(card);
1053
1054 return rc;
1055 }
1056
1057 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1058 struct qeth_reply *reply, unsigned long data)
1059 {
1060 struct qeth_ipa_cmd *cmd;
1061
1062 QETH_CARD_TEXT(card, 4, "defadpcb");
1063
1064 cmd = (struct qeth_ipa_cmd *) data;
1065 if (cmd->hdr.return_code == 0) {
1066 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1067 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1068 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1069 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1070 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1071 }
1072 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1073 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1074 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1075 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1076 }
1077 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1078 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1079 card->info.tx_csum_mask =
1080 cmd->data.setassparms.data.flags_32bit;
1081 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1082 }
1083
1084 return 0;
1085 }
1086
1087 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1088 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1089 __u16 len, enum qeth_prot_versions prot)
1090 {
1091 struct qeth_cmd_buffer *iob;
1092 struct qeth_ipa_cmd *cmd;
1093
1094 QETH_CARD_TEXT(card, 4, "getasscm");
1095 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1096
1097 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1098 cmd->data.setassparms.hdr.assist_no = ipa_func;
1099 cmd->data.setassparms.hdr.length = 8 + len;
1100 cmd->data.setassparms.hdr.command_code = cmd_code;
1101 cmd->data.setassparms.hdr.return_code = 0;
1102 cmd->data.setassparms.hdr.seq_no = 0;
1103
1104 return iob;
1105 }
1106
1107 static int qeth_l3_send_setassparms(struct qeth_card *card,
1108 struct qeth_cmd_buffer *iob, __u16 len, long data,
1109 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1110 unsigned long),
1111 void *reply_param)
1112 {
1113 int rc;
1114 struct qeth_ipa_cmd *cmd;
1115
1116 QETH_CARD_TEXT(card, 4, "sendassp");
1117
1118 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1119 if (len <= sizeof(__u32))
1120 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1121 else /* (len > sizeof(__u32)) */
1122 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1123
1124 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1125 return rc;
1126 }
1127
1128 #ifdef CONFIG_QETH_IPV6
1129 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1130 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1131 {
1132 int rc;
1133 struct qeth_cmd_buffer *iob;
1134
1135 QETH_CARD_TEXT(card, 4, "simassp6");
1136 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1137 0, QETH_PROT_IPV6);
1138 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1139 qeth_l3_default_setassparms_cb, NULL);
1140 return rc;
1141 }
1142 #endif
1143
1144 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1145 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1146 {
1147 int rc;
1148 int length = 0;
1149 struct qeth_cmd_buffer *iob;
1150
1151 QETH_CARD_TEXT(card, 4, "simassp4");
1152 if (data)
1153 length = sizeof(__u32);
1154 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1155 length, QETH_PROT_IPV4);
1156 rc = qeth_l3_send_setassparms(card, iob, length, data,
1157 qeth_l3_default_setassparms_cb, NULL);
1158 return rc;
1159 }
1160
1161 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1162 {
1163 int rc;
1164
1165 QETH_CARD_TEXT(card, 3, "ipaarp");
1166
1167 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1168 dev_info(&card->gdev->dev,
1169 "ARP processing not supported on %s!\n",
1170 QETH_CARD_IFNAME(card));
1171 return 0;
1172 }
1173 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1174 IPA_CMD_ASS_START, 0);
1175 if (rc) {
1176 dev_warn(&card->gdev->dev,
1177 "Starting ARP processing support for %s failed\n",
1178 QETH_CARD_IFNAME(card));
1179 }
1180 return rc;
1181 }
1182
1183 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1184 {
1185 int rc;
1186
1187 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1188
1189 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1190 dev_info(&card->gdev->dev,
1191 "Hardware IP fragmentation not supported on %s\n",
1192 QETH_CARD_IFNAME(card));
1193 return -EOPNOTSUPP;
1194 }
1195
1196 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1197 IPA_CMD_ASS_START, 0);
1198 if (rc) {
1199 dev_warn(&card->gdev->dev,
1200 "Starting IP fragmentation support for %s failed\n",
1201 QETH_CARD_IFNAME(card));
1202 } else
1203 dev_info(&card->gdev->dev,
1204 "Hardware IP fragmentation enabled \n");
1205 return rc;
1206 }
1207
1208 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1209 {
1210 int rc;
1211
1212 QETH_CARD_TEXT(card, 3, "stsrcmac");
1213
1214 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1215 dev_info(&card->gdev->dev,
1216 "Inbound source MAC-address not supported on %s\n",
1217 QETH_CARD_IFNAME(card));
1218 return -EOPNOTSUPP;
1219 }
1220
1221 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1222 IPA_CMD_ASS_START, 0);
1223 if (rc)
1224 dev_warn(&card->gdev->dev,
1225 "Starting source MAC-address support for %s failed\n",
1226 QETH_CARD_IFNAME(card));
1227 return rc;
1228 }
1229
1230 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1231 {
1232 int rc = 0;
1233
1234 QETH_CARD_TEXT(card, 3, "strtvlan");
1235
1236 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1237 dev_info(&card->gdev->dev,
1238 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1239 return -EOPNOTSUPP;
1240 }
1241
1242 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1243 IPA_CMD_ASS_START, 0);
1244 if (rc) {
1245 dev_warn(&card->gdev->dev,
1246 "Starting VLAN support for %s failed\n",
1247 QETH_CARD_IFNAME(card));
1248 } else {
1249 dev_info(&card->gdev->dev, "VLAN enabled\n");
1250 }
1251 return rc;
1252 }
1253
1254 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1255 {
1256 int rc;
1257
1258 QETH_CARD_TEXT(card, 3, "stmcast");
1259
1260 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1261 dev_info(&card->gdev->dev,
1262 "Multicast not supported on %s\n",
1263 QETH_CARD_IFNAME(card));
1264 return -EOPNOTSUPP;
1265 }
1266
1267 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1268 IPA_CMD_ASS_START, 0);
1269 if (rc) {
1270 dev_warn(&card->gdev->dev,
1271 "Starting multicast support for %s failed\n",
1272 QETH_CARD_IFNAME(card));
1273 } else {
1274 dev_info(&card->gdev->dev, "Multicast enabled\n");
1275 card->dev->flags |= IFF_MULTICAST;
1276 }
1277 return rc;
1278 }
1279
1280 #ifdef CONFIG_QETH_IPV6
1281 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1282 {
1283 int rc;
1284
1285 QETH_CARD_TEXT(card, 3, "softipv6");
1286
1287 if (card->info.type == QETH_CARD_TYPE_IQD)
1288 goto out;
1289
1290 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1291 if (rc) {
1292 dev_err(&card->gdev->dev,
1293 "Activating IPv6 support for %s failed\n",
1294 QETH_CARD_IFNAME(card));
1295 return rc;
1296 }
1297 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1298 IPA_CMD_ASS_START, 3);
1299 if (rc) {
1300 dev_err(&card->gdev->dev,
1301 "Activating IPv6 support for %s failed\n",
1302 QETH_CARD_IFNAME(card));
1303 return rc;
1304 }
1305 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1306 IPA_CMD_ASS_START);
1307 if (rc) {
1308 dev_err(&card->gdev->dev,
1309 "Activating IPv6 support for %s failed\n",
1310 QETH_CARD_IFNAME(card));
1311 return rc;
1312 }
1313 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1314 IPA_CMD_ASS_START);
1315 if (rc) {
1316 dev_warn(&card->gdev->dev,
1317 "Enabling the passthrough mode for %s failed\n",
1318 QETH_CARD_IFNAME(card));
1319 return rc;
1320 }
1321 out:
1322 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1323 return 0;
1324 }
1325 #endif
1326
1327 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1328 {
1329 int rc = 0;
1330
1331 QETH_CARD_TEXT(card, 3, "strtipv6");
1332
1333 if (!qeth_is_supported(card, IPA_IPV6)) {
1334 dev_info(&card->gdev->dev,
1335 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1336 return 0;
1337 }
1338 #ifdef CONFIG_QETH_IPV6
1339 rc = qeth_l3_softsetup_ipv6(card);
1340 #endif
1341 return rc ;
1342 }
1343
1344 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1345 {
1346 int rc;
1347
1348 QETH_CARD_TEXT(card, 3, "stbrdcst");
1349 card->info.broadcast_capable = 0;
1350 if (!qeth_is_supported(card, IPA_FILTERING)) {
1351 dev_info(&card->gdev->dev,
1352 "Broadcast not supported on %s\n",
1353 QETH_CARD_IFNAME(card));
1354 rc = -EOPNOTSUPP;
1355 goto out;
1356 }
1357 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1358 IPA_CMD_ASS_START, 0);
1359 if (rc) {
1360 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1361 "%s failed\n", QETH_CARD_IFNAME(card));
1362 goto out;
1363 }
1364
1365 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1366 IPA_CMD_ASS_CONFIGURE, 1);
1367 if (rc) {
1368 dev_warn(&card->gdev->dev,
1369 "Setting up broadcast filtering for %s failed\n",
1370 QETH_CARD_IFNAME(card));
1371 goto out;
1372 }
1373 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1374 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1375 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1376 IPA_CMD_ASS_ENABLE, 1);
1377 if (rc) {
1378 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1379 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1380 goto out;
1381 }
1382 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1383 out:
1384 if (card->info.broadcast_capable)
1385 card->dev->flags |= IFF_BROADCAST;
1386 else
1387 card->dev->flags &= ~IFF_BROADCAST;
1388 return rc;
1389 }
1390
1391 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1392 {
1393 int rc;
1394
1395 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1396 IPA_CMD_ASS_START, 0);
1397 if (rc) {
1398 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1399 "failed, using SW checksumming\n",
1400 QETH_CARD_IFNAME(card));
1401 return rc;
1402 }
1403 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1404 IPA_CMD_ASS_ENABLE,
1405 card->info.csum_mask);
1406 if (rc) {
1407 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1408 "failed, using SW checksumming\n",
1409 QETH_CARD_IFNAME(card));
1410 return rc;
1411 }
1412 return 0;
1413 }
1414
1415 int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1416 {
1417 int rc = 0;
1418
1419 if (on) {
1420 rc = qeth_l3_send_checksum_command(card);
1421 if (rc)
1422 return -EIO;
1423 dev_info(&card->gdev->dev,
1424 "HW Checksumming (inbound) enabled\n");
1425 } else {
1426 rc = qeth_l3_send_simple_setassparms(card,
1427 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1428 if (rc)
1429 return -EIO;
1430 }
1431
1432 return 0;
1433 }
1434
1435 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1436 {
1437 QETH_CARD_TEXT(card, 3, "strtcsum");
1438
1439 if (card->dev->features & NETIF_F_RXCSUM) {
1440 rtnl_lock();
1441 /* force set_features call */
1442 card->dev->features &= ~NETIF_F_RXCSUM;
1443 netdev_update_features(card->dev);
1444 rtnl_unlock();
1445 }
1446 return 0;
1447 }
1448
1449 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1450 {
1451 int rc = 0;
1452
1453 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1454 return rc;
1455 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1456 IPA_CMD_ASS_START, 0);
1457 if (rc)
1458 goto err_out;
1459 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1460 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1461 if (rc)
1462 goto err_out;
1463 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1464 return rc;
1465 err_out:
1466 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1467 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1468 return rc;
1469 }
1470
1471 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1472 {
1473 int rc;
1474
1475 QETH_CARD_TEXT(card, 3, "sttso");
1476
1477 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1478 dev_info(&card->gdev->dev,
1479 "Outbound TSO not supported on %s\n",
1480 QETH_CARD_IFNAME(card));
1481 rc = -EOPNOTSUPP;
1482 } else {
1483 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1484 IPA_CMD_ASS_START, 0);
1485 if (rc)
1486 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1487 "segmentation offload for %s failed\n",
1488 QETH_CARD_IFNAME(card));
1489 else
1490 dev_info(&card->gdev->dev,
1491 "Outbound TSO enabled\n");
1492 }
1493 if (rc)
1494 card->dev->features &= ~NETIF_F_TSO;
1495 return rc;
1496 }
1497
1498 static int qeth_l3_start_ipassists(struct qeth_card *card)
1499 {
1500 QETH_CARD_TEXT(card, 3, "strtipas");
1501
1502 qeth_set_access_ctrl_online(card); /* go on*/
1503 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1504 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1505 qeth_l3_start_ipa_source_mac(card); /* go on*/
1506 qeth_l3_start_ipa_vlan(card); /* go on*/
1507 qeth_l3_start_ipa_multicast(card); /* go on*/
1508 qeth_l3_start_ipa_ipv6(card); /* go on*/
1509 qeth_l3_start_ipa_broadcast(card); /* go on*/
1510 qeth_l3_start_ipa_checksum(card); /* go on*/
1511 qeth_l3_start_ipa_tx_checksum(card);
1512 qeth_l3_start_ipa_tso(card); /* go on*/
1513 return 0;
1514 }
1515
1516 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1517 struct qeth_reply *reply, unsigned long data)
1518 {
1519 struct qeth_ipa_cmd *cmd;
1520
1521 cmd = (struct qeth_ipa_cmd *) data;
1522 if (cmd->hdr.return_code == 0)
1523 memcpy(card->dev->dev_addr,
1524 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1525 else
1526 random_ether_addr(card->dev->dev_addr);
1527
1528 return 0;
1529 }
1530
1531 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1532 {
1533 int rc = 0;
1534 struct qeth_cmd_buffer *iob;
1535 struct qeth_ipa_cmd *cmd;
1536
1537 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1538
1539 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1540 QETH_PROT_IPV6);
1541 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1542 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1543 card->info.unique_id;
1544
1545 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1546 NULL);
1547 return rc;
1548 }
1549
1550 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1551 struct qeth_reply *reply, unsigned long data)
1552 {
1553 struct qeth_ipa_cmd *cmd;
1554
1555 cmd = (struct qeth_ipa_cmd *) data;
1556 if (cmd->hdr.return_code == 0)
1557 card->info.unique_id = *((__u16 *)
1558 &cmd->data.create_destroy_addr.unique_id[6]);
1559 else {
1560 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1561 UNIQUE_ID_NOT_BY_CARD;
1562 dev_warn(&card->gdev->dev, "The network adapter failed to "
1563 "generate a unique ID\n");
1564 }
1565 return 0;
1566 }
1567
1568 static int qeth_l3_get_unique_id(struct qeth_card *card)
1569 {
1570 int rc = 0;
1571 struct qeth_cmd_buffer *iob;
1572 struct qeth_ipa_cmd *cmd;
1573
1574 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1575
1576 if (!qeth_is_supported(card, IPA_IPV6)) {
1577 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1578 UNIQUE_ID_NOT_BY_CARD;
1579 return 0;
1580 }
1581
1582 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1583 QETH_PROT_IPV6);
1584 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1585 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1586 card->info.unique_id;
1587
1588 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1589 return rc;
1590 }
1591
1592 static int
1593 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1594 unsigned long data)
1595 {
1596 struct qeth_ipa_cmd *cmd;
1597 __u16 rc;
1598
1599 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1600
1601 cmd = (struct qeth_ipa_cmd *)data;
1602 rc = cmd->hdr.return_code;
1603 if (rc)
1604 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1605 switch (cmd->data.diagass.action) {
1606 case QETH_DIAGS_CMD_TRACE_QUERY:
1607 break;
1608 case QETH_DIAGS_CMD_TRACE_DISABLE:
1609 switch (rc) {
1610 case 0:
1611 case IPA_RC_INVALID_SUBCMD:
1612 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1613 dev_info(&card->gdev->dev, "The HiperSockets network "
1614 "traffic analyzer is deactivated\n");
1615 break;
1616 default:
1617 break;
1618 }
1619 break;
1620 case QETH_DIAGS_CMD_TRACE_ENABLE:
1621 switch (rc) {
1622 case 0:
1623 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1624 dev_info(&card->gdev->dev, "The HiperSockets network "
1625 "traffic analyzer is activated\n");
1626 break;
1627 case IPA_RC_HARDWARE_AUTH_ERROR:
1628 dev_warn(&card->gdev->dev, "The device is not "
1629 "authorized to run as a HiperSockets network "
1630 "traffic analyzer\n");
1631 break;
1632 case IPA_RC_TRACE_ALREADY_ACTIVE:
1633 dev_warn(&card->gdev->dev, "A HiperSockets "
1634 "network traffic analyzer is already "
1635 "active in the HiperSockets LAN\n");
1636 break;
1637 default:
1638 break;
1639 }
1640 break;
1641 default:
1642 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1643 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1644 }
1645
1646 return 0;
1647 }
1648
1649 static int
1650 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1651 {
1652 struct qeth_cmd_buffer *iob;
1653 struct qeth_ipa_cmd *cmd;
1654
1655 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1656
1657 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1658 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1659 cmd->data.diagass.subcmd_len = 16;
1660 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1661 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1662 cmd->data.diagass.action = diags_cmd;
1663 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1664 }
1665
1666 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1667 struct net_device *dev)
1668 {
1669 if (dev->type == ARPHRD_IEEE802_TR)
1670 ip_tr_mc_map(ipm, mac);
1671 else
1672 ip_eth_mc_map(ipm, mac);
1673 }
1674
1675 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1676 {
1677 struct qeth_ipaddr *ipm;
1678 struct ip_mc_list *im4;
1679 char buf[MAX_ADDR_LEN];
1680
1681 QETH_CARD_TEXT(card, 4, "addmc");
1682 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1683 im4 = rcu_dereference(im4->next_rcu)) {
1684 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1685 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1686 if (!ipm)
1687 continue;
1688 ipm->u.a4.addr = im4->multiaddr;
1689 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1690 ipm->is_multicast = 1;
1691 if (!qeth_l3_add_ip(card, ipm))
1692 kfree(ipm);
1693 }
1694 }
1695
1696 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1697 {
1698 struct in_device *in_dev;
1699 struct vlan_group *vg;
1700 int i;
1701
1702 QETH_CARD_TEXT(card, 4, "addmcvl");
1703 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1704 return;
1705
1706 vg = card->vlangrp;
1707 for (i = 0; i < VLAN_N_VID; i++) {
1708 struct net_device *netdev = vlan_group_get_device(vg, i);
1709 if (netdev == NULL ||
1710 !(netdev->flags & IFF_UP))
1711 continue;
1712 in_dev = in_dev_get(netdev);
1713 if (!in_dev)
1714 continue;
1715 rcu_read_lock();
1716 qeth_l3_add_mc(card, in_dev);
1717 rcu_read_unlock();
1718 in_dev_put(in_dev);
1719 }
1720 }
1721
1722 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1723 {
1724 struct in_device *in4_dev;
1725
1726 QETH_CARD_TEXT(card, 4, "chkmcv4");
1727 in4_dev = in_dev_get(card->dev);
1728 if (in4_dev == NULL)
1729 return;
1730 rcu_read_lock();
1731 qeth_l3_add_mc(card, in4_dev);
1732 qeth_l3_add_vlan_mc(card);
1733 rcu_read_unlock();
1734 in_dev_put(in4_dev);
1735 }
1736
1737 #ifdef CONFIG_QETH_IPV6
1738 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1739 {
1740 struct qeth_ipaddr *ipm;
1741 struct ifmcaddr6 *im6;
1742 char buf[MAX_ADDR_LEN];
1743
1744 QETH_CARD_TEXT(card, 4, "addmc6");
1745 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1746 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1747 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1748 if (!ipm)
1749 continue;
1750 ipm->is_multicast = 1;
1751 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1752 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1753 sizeof(struct in6_addr));
1754 if (!qeth_l3_add_ip(card, ipm))
1755 kfree(ipm);
1756 }
1757 }
1758
1759 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1760 {
1761 struct inet6_dev *in_dev;
1762 struct vlan_group *vg;
1763 int i;
1764
1765 QETH_CARD_TEXT(card, 4, "admc6vl");
1766 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1767 return;
1768
1769 vg = card->vlangrp;
1770 for (i = 0; i < VLAN_N_VID; i++) {
1771 struct net_device *netdev = vlan_group_get_device(vg, i);
1772 if (netdev == NULL ||
1773 !(netdev->flags & IFF_UP))
1774 continue;
1775 in_dev = in6_dev_get(netdev);
1776 if (!in_dev)
1777 continue;
1778 read_lock_bh(&in_dev->lock);
1779 qeth_l3_add_mc6(card, in_dev);
1780 read_unlock_bh(&in_dev->lock);
1781 in6_dev_put(in_dev);
1782 }
1783 }
1784
1785 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1786 {
1787 struct inet6_dev *in6_dev;
1788
1789 QETH_CARD_TEXT(card, 4, "chkmcv6");
1790 if (!qeth_is_supported(card, IPA_IPV6))
1791 return ;
1792 in6_dev = in6_dev_get(card->dev);
1793 if (in6_dev == NULL)
1794 return;
1795 read_lock_bh(&in6_dev->lock);
1796 qeth_l3_add_mc6(card, in6_dev);
1797 qeth_l3_add_vlan_mc6(card);
1798 read_unlock_bh(&in6_dev->lock);
1799 in6_dev_put(in6_dev);
1800 }
1801 #endif /* CONFIG_QETH_IPV6 */
1802
1803 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1804 unsigned short vid)
1805 {
1806 struct in_device *in_dev;
1807 struct in_ifaddr *ifa;
1808 struct qeth_ipaddr *addr;
1809
1810 QETH_CARD_TEXT(card, 4, "frvaddr4");
1811
1812 in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1813 if (!in_dev)
1814 return;
1815 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1816 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1817 if (addr) {
1818 addr->u.a4.addr = ifa->ifa_address;
1819 addr->u.a4.mask = ifa->ifa_mask;
1820 addr->type = QETH_IP_TYPE_NORMAL;
1821 if (!qeth_l3_delete_ip(card, addr))
1822 kfree(addr);
1823 }
1824 }
1825 in_dev_put(in_dev);
1826 }
1827
1828 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1829 unsigned short vid)
1830 {
1831 #ifdef CONFIG_QETH_IPV6
1832 struct inet6_dev *in6_dev;
1833 struct inet6_ifaddr *ifa;
1834 struct qeth_ipaddr *addr;
1835
1836 QETH_CARD_TEXT(card, 4, "frvaddr6");
1837
1838 in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1839 if (!in6_dev)
1840 return;
1841 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1842 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1843 if (addr) {
1844 memcpy(&addr->u.a6.addr, &ifa->addr,
1845 sizeof(struct in6_addr));
1846 addr->u.a6.pfxlen = ifa->prefix_len;
1847 addr->type = QETH_IP_TYPE_NORMAL;
1848 if (!qeth_l3_delete_ip(card, addr))
1849 kfree(addr);
1850 }
1851 }
1852 in6_dev_put(in6_dev);
1853 #endif /* CONFIG_QETH_IPV6 */
1854 }
1855
1856 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1857 unsigned short vid)
1858 {
1859 if (!card->vlangrp)
1860 return;
1861 qeth_l3_free_vlan_addresses4(card, vid);
1862 qeth_l3_free_vlan_addresses6(card, vid);
1863 }
1864
1865 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1866 struct vlan_group *grp)
1867 {
1868 struct qeth_card *card = dev->ml_priv;
1869 unsigned long flags;
1870
1871 QETH_CARD_TEXT(card, 4, "vlanreg");
1872 spin_lock_irqsave(&card->vlanlock, flags);
1873 card->vlangrp = grp;
1874 spin_unlock_irqrestore(&card->vlanlock, flags);
1875 }
1876
1877 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1878 {
1879 return;
1880 }
1881
1882 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1883 {
1884 struct qeth_card *card = dev->ml_priv;
1885 unsigned long flags;
1886
1887 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1888 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1889 QETH_CARD_TEXT(card, 3, "kidREC");
1890 return;
1891 }
1892 spin_lock_irqsave(&card->vlanlock, flags);
1893 /* unregister IP addresses of vlan device */
1894 qeth_l3_free_vlan_addresses(card, vid);
1895 vlan_group_set_device(card->vlangrp, vid, NULL);
1896 spin_unlock_irqrestore(&card->vlanlock, flags);
1897 qeth_l3_set_multicast_list(card->dev);
1898 }
1899
1900 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1901 struct sk_buff *skb, struct qeth_hdr *hdr,
1902 unsigned short *vlan_id)
1903 {
1904 __be16 prot;
1905 struct iphdr *ip_hdr;
1906 unsigned char tg_addr[MAX_ADDR_LEN];
1907 int is_vlan = 0;
1908
1909 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1910 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1911 ETH_P_IP);
1912 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1913 case QETH_CAST_MULTICAST:
1914 switch (prot) {
1915 #ifdef CONFIG_QETH_IPV6
1916 case __constant_htons(ETH_P_IPV6):
1917 ndisc_mc_map((struct in6_addr *)
1918 skb->data + 24,
1919 tg_addr, card->dev, 0);
1920 break;
1921 #endif
1922 case __constant_htons(ETH_P_IP):
1923 ip_hdr = (struct iphdr *)skb->data;
1924 (card->dev->type == ARPHRD_IEEE802_TR) ?
1925 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1926 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1927 break;
1928 default:
1929 memcpy(tg_addr, card->dev->broadcast,
1930 card->dev->addr_len);
1931 }
1932 card->stats.multicast++;
1933 skb->pkt_type = PACKET_MULTICAST;
1934 break;
1935 case QETH_CAST_BROADCAST:
1936 memcpy(tg_addr, card->dev->broadcast,
1937 card->dev->addr_len);
1938 card->stats.multicast++;
1939 skb->pkt_type = PACKET_BROADCAST;
1940 break;
1941 case QETH_CAST_UNICAST:
1942 case QETH_CAST_ANYCAST:
1943 case QETH_CAST_NOCAST:
1944 default:
1945 if (card->options.sniffer)
1946 skb->pkt_type = PACKET_OTHERHOST;
1947 else
1948 skb->pkt_type = PACKET_HOST;
1949 memcpy(tg_addr, card->dev->dev_addr,
1950 card->dev->addr_len);
1951 }
1952 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1953 card->dev->header_ops->create(skb, card->dev, prot,
1954 tg_addr, &hdr->hdr.l3.dest_addr[2],
1955 card->dev->addr_len);
1956 else
1957 card->dev->header_ops->create(skb, card->dev, prot,
1958 tg_addr, "FAKELL", card->dev->addr_len);
1959 }
1960
1961 #ifdef CONFIG_TR
1962 if (card->dev->type == ARPHRD_IEEE802_TR)
1963 skb->protocol = tr_type_trans(skb, card->dev);
1964 else
1965 #endif
1966 skb->protocol = eth_type_trans(skb, card->dev);
1967
1968 if (hdr->hdr.l3.ext_flags &
1969 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1970 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1971 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1972 is_vlan = 1;
1973 }
1974
1975 if (card->dev->features & NETIF_F_RXCSUM) {
1976 if ((hdr->hdr.l3.ext_flags &
1977 (QETH_HDR_EXT_CSUM_HDR_REQ |
1978 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1979 (QETH_HDR_EXT_CSUM_HDR_REQ |
1980 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1981 skb->ip_summed = CHECKSUM_UNNECESSARY;
1982 else
1983 skb->ip_summed = CHECKSUM_NONE;
1984 } else
1985 skb->ip_summed = CHECKSUM_NONE;
1986
1987 return is_vlan;
1988 }
1989
1990 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1991 int budget, int *done)
1992 {
1993 int work_done = 0;
1994 struct sk_buff *skb;
1995 struct qeth_hdr *hdr;
1996 __u16 vlan_tag = 0;
1997 int is_vlan;
1998 unsigned int len;
1999
2000 *done = 0;
2001 BUG_ON(!budget);
2002 while (budget) {
2003 skb = qeth_core_get_next_skb(card,
2004 card->qdio.in_q->bufs[card->rx.b_index].buffer,
2005 &card->rx.b_element, &card->rx.e_offset, &hdr);
2006 if (!skb) {
2007 *done = 1;
2008 break;
2009 }
2010 skb->dev = card->dev;
2011 switch (hdr->hdr.l3.id) {
2012 case QETH_HEADER_TYPE_LAYER3:
2013 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2014 &vlan_tag);
2015 len = skb->len;
2016 if (is_vlan && !card->options.sniffer)
2017 vlan_gro_receive(&card->napi, card->vlangrp,
2018 vlan_tag, skb);
2019 else
2020 napi_gro_receive(&card->napi, skb);
2021 break;
2022 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2023 skb->pkt_type = PACKET_HOST;
2024 skb->protocol = eth_type_trans(skb, skb->dev);
2025 len = skb->len;
2026 netif_receive_skb(skb);
2027 break;
2028 default:
2029 dev_kfree_skb_any(skb);
2030 QETH_CARD_TEXT(card, 3, "inbunkno");
2031 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2032 continue;
2033 }
2034 work_done++;
2035 budget--;
2036 card->stats.rx_packets++;
2037 card->stats.rx_bytes += len;
2038 }
2039 return work_done;
2040 }
2041
2042 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2043 {
2044 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2045 int work_done = 0;
2046 struct qeth_qdio_buffer *buffer;
2047 int done;
2048 int new_budget = budget;
2049
2050 if (card->options.performance_stats) {
2051 card->perf_stats.inbound_cnt++;
2052 card->perf_stats.inbound_start_time = qeth_get_micros();
2053 }
2054
2055 while (1) {
2056 if (!card->rx.b_count) {
2057 card->rx.qdio_err = 0;
2058 card->rx.b_count = qdio_get_next_buffers(
2059 card->data.ccwdev, 0, &card->rx.b_index,
2060 &card->rx.qdio_err);
2061 if (card->rx.b_count <= 0) {
2062 card->rx.b_count = 0;
2063 break;
2064 }
2065 card->rx.b_element =
2066 &card->qdio.in_q->bufs[card->rx.b_index]
2067 .buffer->element[0];
2068 card->rx.e_offset = 0;
2069 }
2070
2071 while (card->rx.b_count) {
2072 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2073 if (!(card->rx.qdio_err &&
2074 qeth_check_qdio_errors(card, buffer->buffer,
2075 card->rx.qdio_err, "qinerr")))
2076 work_done += qeth_l3_process_inbound_buffer(
2077 card, new_budget, &done);
2078 else
2079 done = 1;
2080
2081 if (done) {
2082 if (card->options.performance_stats)
2083 card->perf_stats.bufs_rec++;
2084 qeth_put_buffer_pool_entry(card,
2085 buffer->pool_entry);
2086 qeth_queue_input_buffer(card, card->rx.b_index);
2087 card->rx.b_count--;
2088 if (card->rx.b_count) {
2089 card->rx.b_index =
2090 (card->rx.b_index + 1) %
2091 QDIO_MAX_BUFFERS_PER_Q;
2092 card->rx.b_element =
2093 &card->qdio.in_q
2094 ->bufs[card->rx.b_index]
2095 .buffer->element[0];
2096 card->rx.e_offset = 0;
2097 }
2098 }
2099
2100 if (work_done >= budget)
2101 goto out;
2102 else
2103 new_budget = budget - work_done;
2104 }
2105 }
2106
2107 napi_complete(napi);
2108 if (qdio_start_irq(card->data.ccwdev, 0))
2109 napi_schedule(&card->napi);
2110 out:
2111 if (card->options.performance_stats)
2112 card->perf_stats.inbound_time += qeth_get_micros() -
2113 card->perf_stats.inbound_start_time;
2114 return work_done;
2115 }
2116
2117 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2118 struct qeth_card *card)
2119 {
2120 int rc = 0;
2121 struct vlan_group *vg;
2122 int i;
2123
2124 vg = card->vlangrp;
2125 if (!vg)
2126 return rc;
2127
2128 for (i = 0; i < VLAN_N_VID; i++) {
2129 if (vlan_group_get_device(vg, i) == dev) {
2130 rc = QETH_VLAN_CARD;
2131 break;
2132 }
2133 }
2134
2135 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2136 return 0;
2137
2138 return rc;
2139 }
2140
2141 static int qeth_l3_verify_dev(struct net_device *dev)
2142 {
2143 struct qeth_card *card;
2144 unsigned long flags;
2145 int rc = 0;
2146
2147 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2148 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2149 if (card->dev == dev) {
2150 rc = QETH_REAL_CARD;
2151 break;
2152 }
2153 rc = qeth_l3_verify_vlan_dev(dev, card);
2154 if (rc)
2155 break;
2156 }
2157 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2158
2159 return rc;
2160 }
2161
2162 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2163 {
2164 struct qeth_card *card = NULL;
2165 int rc;
2166
2167 rc = qeth_l3_verify_dev(dev);
2168 if (rc == QETH_REAL_CARD)
2169 card = dev->ml_priv;
2170 else if (rc == QETH_VLAN_CARD)
2171 card = vlan_dev_real_dev(dev)->ml_priv;
2172 if (card && card->options.layer2)
2173 card = NULL;
2174 if (card)
2175 QETH_CARD_TEXT_(card, 4, "%d", rc);
2176 return card ;
2177 }
2178
2179 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2180 {
2181 int rc = 0;
2182
2183 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2184 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2185
2186 qeth_set_allowed_threads(card, 0, 1);
2187 if (card->options.sniffer &&
2188 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2189 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2190 if (card->read.state == CH_STATE_UP &&
2191 card->write.state == CH_STATE_UP &&
2192 (card->state == CARD_STATE_UP)) {
2193 if (recovery_mode)
2194 qeth_l3_stop(card->dev);
2195 else {
2196 rtnl_lock();
2197 dev_close(card->dev);
2198 rtnl_unlock();
2199 }
2200 card->state = CARD_STATE_SOFTSETUP;
2201 }
2202 if (card->state == CARD_STATE_SOFTSETUP) {
2203 qeth_l3_clear_ip_list(card, 1);
2204 qeth_clear_ipacmd_list(card);
2205 card->state = CARD_STATE_HARDSETUP;
2206 }
2207 if (card->state == CARD_STATE_HARDSETUP) {
2208 qeth_qdio_clear_card(card, 0);
2209 qeth_clear_qdio_buffers(card);
2210 qeth_clear_working_pool_list(card);
2211 card->state = CARD_STATE_DOWN;
2212 }
2213 if (card->state == CARD_STATE_DOWN) {
2214 qeth_clear_cmd_buffers(&card->read);
2215 qeth_clear_cmd_buffers(&card->write);
2216 }
2217 return rc;
2218 }
2219
2220 /*
2221 * test for and Switch promiscuous mode (on or off)
2222 * either for guestlan or HiperSocket Sniffer
2223 */
2224 static void
2225 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2226 {
2227 struct net_device *dev = card->dev;
2228
2229 if (((dev->flags & IFF_PROMISC) &&
2230 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2231 (!(dev->flags & IFF_PROMISC) &&
2232 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2233 return;
2234
2235 if (card->info.guestlan) { /* Guestlan trace */
2236 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2237 qeth_setadp_promisc_mode(card);
2238 } else if (card->options.sniffer && /* HiperSockets trace */
2239 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2240 if (dev->flags & IFF_PROMISC) {
2241 QETH_CARD_TEXT(card, 3, "+promisc");
2242 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2243 } else {
2244 QETH_CARD_TEXT(card, 3, "-promisc");
2245 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2246 }
2247 }
2248 }
2249
2250 static void qeth_l3_set_multicast_list(struct net_device *dev)
2251 {
2252 struct qeth_card *card = dev->ml_priv;
2253
2254 QETH_CARD_TEXT(card, 3, "setmulti");
2255 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2256 (card->state != CARD_STATE_UP))
2257 return;
2258 if (!card->options.sniffer) {
2259 qeth_l3_delete_mc_addresses(card);
2260 qeth_l3_add_multicast_ipv4(card);
2261 #ifdef CONFIG_QETH_IPV6
2262 qeth_l3_add_multicast_ipv6(card);
2263 #endif
2264 qeth_l3_set_ip_addr_list(card);
2265 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2266 return;
2267 }
2268 qeth_l3_handle_promisc_mode(card);
2269 }
2270
2271 static const char *qeth_l3_arp_get_error_cause(int *rc)
2272 {
2273 switch (*rc) {
2274 case QETH_IPA_ARP_RC_FAILED:
2275 *rc = -EIO;
2276 return "operation failed";
2277 case QETH_IPA_ARP_RC_NOTSUPP:
2278 *rc = -EOPNOTSUPP;
2279 return "operation not supported";
2280 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2281 *rc = -EINVAL;
2282 return "argument out of range";
2283 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2284 *rc = -EOPNOTSUPP;
2285 return "query operation not supported";
2286 case QETH_IPA_ARP_RC_Q_NO_DATA:
2287 *rc = -ENOENT;
2288 return "no query data available";
2289 default:
2290 return "unknown error";
2291 }
2292 }
2293
2294 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2295 {
2296 int tmp;
2297 int rc;
2298
2299 QETH_CARD_TEXT(card, 3, "arpstnoe");
2300
2301 /*
2302 * currently GuestLAN only supports the ARP assist function
2303 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2304 * thus we say EOPNOTSUPP for this ARP function
2305 */
2306 if (card->info.guestlan)
2307 return -EOPNOTSUPP;
2308 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2309 return -EOPNOTSUPP;
2310 }
2311 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2312 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2313 no_entries);
2314 if (rc) {
2315 tmp = rc;
2316 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2317 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2318 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2319 }
2320 return rc;
2321 }
2322
2323 static __u32 get_arp_entry_size(struct qeth_card *card,
2324 struct qeth_arp_query_data *qdata,
2325 struct qeth_arp_entrytype *type, __u8 strip_entries)
2326 {
2327 __u32 rc;
2328 __u8 is_hsi;
2329
2330 is_hsi = qdata->reply_bits == 5;
2331 if (type->ip == QETHARP_IP_ADDR_V4) {
2332 QETH_CARD_TEXT(card, 4, "arpev4");
2333 if (strip_entries) {
2334 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2335 sizeof(struct qeth_arp_qi_entry7_short);
2336 } else {
2337 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2338 sizeof(struct qeth_arp_qi_entry7);
2339 }
2340 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2341 QETH_CARD_TEXT(card, 4, "arpev6");
2342 if (strip_entries) {
2343 rc = is_hsi ?
2344 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2345 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2346 } else {
2347 rc = is_hsi ?
2348 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2349 sizeof(struct qeth_arp_qi_entry7_ipv6);
2350 }
2351 } else {
2352 QETH_CARD_TEXT(card, 4, "arpinv");
2353 rc = 0;
2354 }
2355
2356 return rc;
2357 }
2358
2359 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2360 {
2361 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2362 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2363 }
2364
2365 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2366 struct qeth_reply *reply, unsigned long data)
2367 {
2368 struct qeth_ipa_cmd *cmd;
2369 struct qeth_arp_query_data *qdata;
2370 struct qeth_arp_query_info *qinfo;
2371 int i;
2372 int e;
2373 int entrybytes_done;
2374 int stripped_bytes;
2375 __u8 do_strip_entries;
2376
2377 QETH_CARD_TEXT(card, 3, "arpquecb");
2378
2379 qinfo = (struct qeth_arp_query_info *) reply->param;
2380 cmd = (struct qeth_ipa_cmd *) data;
2381 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2382 if (cmd->hdr.return_code) {
2383 QETH_CARD_TEXT(card, 4, "arpcberr");
2384 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2385 return 0;
2386 }
2387 if (cmd->data.setassparms.hdr.return_code) {
2388 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2389 QETH_CARD_TEXT(card, 4, "setaperr");
2390 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2391 return 0;
2392 }
2393 qdata = &cmd->data.setassparms.data.query_arp;
2394 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2395
2396 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2397 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2398 entrybytes_done = 0;
2399 for (e = 0; e < qdata->no_entries; ++e) {
2400 char *cur_entry;
2401 __u32 esize;
2402 struct qeth_arp_entrytype *etype;
2403
2404 cur_entry = &qdata->data + entrybytes_done;
2405 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2406 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2407 QETH_CARD_TEXT(card, 4, "pmis");
2408 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2409 break;
2410 }
2411 esize = get_arp_entry_size(card, qdata, etype,
2412 do_strip_entries);
2413 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2414 if (!esize)
2415 break;
2416
2417 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2418 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2419 cmd->hdr.return_code = -ENOMEM;
2420 goto out_error;
2421 }
2422
2423 memcpy(qinfo->udata + qinfo->udata_offset,
2424 &qdata->data + entrybytes_done + stripped_bytes,
2425 esize);
2426 entrybytes_done += esize + stripped_bytes;
2427 qinfo->udata_offset += esize;
2428 ++qinfo->no_entries;
2429 }
2430 /* check if all replies received ... */
2431 if (cmd->data.setassparms.hdr.seq_no <
2432 cmd->data.setassparms.hdr.number_of_replies)
2433 return 1;
2434 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2435 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2436 /* keep STRIP_ENTRIES flag so the user program can distinguish
2437 * stripped entries from normal ones */
2438 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2439 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2440 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2441 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2442 return 0;
2443 out_error:
2444 i = 0;
2445 memcpy(qinfo->udata, &i, 4);
2446 return 0;
2447 }
2448
2449 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2450 struct qeth_cmd_buffer *iob, int len,
2451 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2452 unsigned long),
2453 void *reply_param)
2454 {
2455 QETH_CARD_TEXT(card, 4, "sendarp");
2456
2457 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2458 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2459 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2460 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2461 reply_cb, reply_param);
2462 }
2463
2464 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2465 enum qeth_prot_versions prot,
2466 struct qeth_arp_query_info *qinfo)
2467 {
2468 struct qeth_cmd_buffer *iob;
2469 struct qeth_ipa_cmd *cmd;
2470 int tmp;
2471 int rc;
2472
2473 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2474
2475 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2476 IPA_CMD_ASS_ARP_QUERY_INFO,
2477 sizeof(struct qeth_arp_query_data) - sizeof(char),
2478 prot);
2479 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2480 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2481 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2482 cmd->data.setassparms.data.query_arp.no_entries = 0;
2483 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2484 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2485 qeth_l3_arp_query_cb, (void *)qinfo);
2486 if (rc) {
2487 tmp = rc;
2488 QETH_DBF_MESSAGE(2,
2489 "Error while querying ARP cache on %s: %s "
2490 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2491 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2492 }
2493
2494 return rc;
2495 }
2496
2497 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2498 {
2499 struct qeth_arp_query_info qinfo = {0, };
2500 int rc;
2501
2502 QETH_CARD_TEXT(card, 3, "arpquery");
2503
2504 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2505 IPA_ARP_PROCESSING)) {
2506 QETH_CARD_TEXT(card, 3, "arpqnsup");
2507 rc = -EOPNOTSUPP;
2508 goto out;
2509 }
2510 /* get size of userspace buffer and mask_bits -> 6 bytes */
2511 if (copy_from_user(&qinfo, udata, 6)) {
2512 rc = -EFAULT;
2513 goto out;
2514 }
2515 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2516 if (!qinfo.udata) {
2517 rc = -ENOMEM;
2518 goto out;
2519 }
2520 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2521 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2522 if (rc) {
2523 if (copy_to_user(udata, qinfo.udata, 4))
2524 rc = -EFAULT;
2525 goto free_and_out;
2526 } else {
2527 #ifdef CONFIG_QETH_IPV6
2528 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2529 /* fails in case of GuestLAN QDIO mode */
2530 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2531 &qinfo);
2532 }
2533 #endif
2534 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2535 QETH_CARD_TEXT(card, 4, "qactf");
2536 rc = -EFAULT;
2537 goto free_and_out;
2538 }
2539 QETH_CARD_TEXT_(card, 4, "qacts");
2540 }
2541 free_and_out:
2542 kfree(qinfo.udata);
2543 out:
2544 return rc;
2545 }
2546
2547 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2548 struct qeth_arp_cache_entry *entry)
2549 {
2550 struct qeth_cmd_buffer *iob;
2551 char buf[16];
2552 int tmp;
2553 int rc;
2554
2555 QETH_CARD_TEXT(card, 3, "arpadent");
2556
2557 /*
2558 * currently GuestLAN only supports the ARP assist function
2559 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2560 * thus we say EOPNOTSUPP for this ARP function
2561 */
2562 if (card->info.guestlan)
2563 return -EOPNOTSUPP;
2564 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2565 return -EOPNOTSUPP;
2566 }
2567
2568 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2569 IPA_CMD_ASS_ARP_ADD_ENTRY,
2570 sizeof(struct qeth_arp_cache_entry),
2571 QETH_PROT_IPV4);
2572 rc = qeth_l3_send_setassparms(card, iob,
2573 sizeof(struct qeth_arp_cache_entry),
2574 (unsigned long) entry,
2575 qeth_l3_default_setassparms_cb, NULL);
2576 if (rc) {
2577 tmp = rc;
2578 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2579 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2580 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2581 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2582 }
2583 return rc;
2584 }
2585
2586 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2587 struct qeth_arp_cache_entry *entry)
2588 {
2589 struct qeth_cmd_buffer *iob;
2590 char buf[16] = {0, };
2591 int tmp;
2592 int rc;
2593
2594 QETH_CARD_TEXT(card, 3, "arprment");
2595
2596 /*
2597 * currently GuestLAN only supports the ARP assist function
2598 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2599 * thus we say EOPNOTSUPP for this ARP function
2600 */
2601 if (card->info.guestlan)
2602 return -EOPNOTSUPP;
2603 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2604 return -EOPNOTSUPP;
2605 }
2606 memcpy(buf, entry, 12);
2607 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2608 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2609 12,
2610 QETH_PROT_IPV4);
2611 rc = qeth_l3_send_setassparms(card, iob,
2612 12, (unsigned long)buf,
2613 qeth_l3_default_setassparms_cb, NULL);
2614 if (rc) {
2615 tmp = rc;
2616 memset(buf, 0, 16);
2617 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2618 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2619 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2620 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2621 }
2622 return rc;
2623 }
2624
2625 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2626 {
2627 int rc;
2628 int tmp;
2629
2630 QETH_CARD_TEXT(card, 3, "arpflush");
2631
2632 /*
2633 * currently GuestLAN only supports the ARP assist function
2634 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2635 * thus we say EOPNOTSUPP for this ARP function
2636 */
2637 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2638 return -EOPNOTSUPP;
2639 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2640 return -EOPNOTSUPP;
2641 }
2642 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2643 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2644 if (rc) {
2645 tmp = rc;
2646 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2647 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2648 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2649 }
2650 return rc;
2651 }
2652
2653 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2654 {
2655 struct qeth_card *card = dev->ml_priv;
2656 struct qeth_arp_cache_entry arp_entry;
2657 struct mii_ioctl_data *mii_data;
2658 int rc = 0;
2659
2660 if (!card)
2661 return -ENODEV;
2662
2663 if ((card->state != CARD_STATE_UP) &&
2664 (card->state != CARD_STATE_SOFTSETUP))
2665 return -ENODEV;
2666
2667 switch (cmd) {
2668 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2669 if (!capable(CAP_NET_ADMIN)) {
2670 rc = -EPERM;
2671 break;
2672 }
2673 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2674 break;
2675 case SIOC_QETH_ARP_QUERY_INFO:
2676 if (!capable(CAP_NET_ADMIN)) {
2677 rc = -EPERM;
2678 break;
2679 }
2680 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2681 break;
2682 case SIOC_QETH_ARP_ADD_ENTRY:
2683 if (!capable(CAP_NET_ADMIN)) {
2684 rc = -EPERM;
2685 break;
2686 }
2687 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2688 sizeof(struct qeth_arp_cache_entry)))
2689 rc = -EFAULT;
2690 else
2691 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2692 break;
2693 case SIOC_QETH_ARP_REMOVE_ENTRY:
2694 if (!capable(CAP_NET_ADMIN)) {
2695 rc = -EPERM;
2696 break;
2697 }
2698 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2699 sizeof(struct qeth_arp_cache_entry)))
2700 rc = -EFAULT;
2701 else
2702 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2703 break;
2704 case SIOC_QETH_ARP_FLUSH_CACHE:
2705 if (!capable(CAP_NET_ADMIN)) {
2706 rc = -EPERM;
2707 break;
2708 }
2709 rc = qeth_l3_arp_flush_cache(card);
2710 break;
2711 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2712 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2713 break;
2714 case SIOC_QETH_GET_CARD_TYPE:
2715 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2716 card->info.type == QETH_CARD_TYPE_OSX) &&
2717 !card->info.guestlan)
2718 return 1;
2719 return 0;
2720 break;
2721 case SIOCGMIIPHY:
2722 mii_data = if_mii(rq);
2723 mii_data->phy_id = 0;
2724 break;
2725 case SIOCGMIIREG:
2726 mii_data = if_mii(rq);
2727 if (mii_data->phy_id != 0)
2728 rc = -EINVAL;
2729 else
2730 mii_data->val_out = qeth_mdio_read(dev,
2731 mii_data->phy_id,
2732 mii_data->reg_num);
2733 break;
2734 default:
2735 rc = -EOPNOTSUPP;
2736 }
2737 if (rc)
2738 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2739 return rc;
2740 }
2741
2742 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2743 {
2744 int cast_type = RTN_UNSPEC;
2745 struct neighbour *n = NULL;
2746 struct dst_entry *dst;
2747
2748 dst = skb_dst(skb);
2749 if (dst)
2750 n = dst_get_neighbour(dst);
2751 if (n) {
2752 cast_type = n->type;
2753 if ((cast_type == RTN_BROADCAST) ||
2754 (cast_type == RTN_MULTICAST) ||
2755 (cast_type == RTN_ANYCAST))
2756 return cast_type;
2757 else
2758 return RTN_UNSPEC;
2759 }
2760 /* try something else */
2761 if (skb->protocol == ETH_P_IPV6)
2762 return (skb_network_header(skb)[24] == 0xff) ?
2763 RTN_MULTICAST : 0;
2764 else if (skb->protocol == ETH_P_IP)
2765 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2766 RTN_MULTICAST : 0;
2767 /* ... */
2768 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2769 return RTN_BROADCAST;
2770 else {
2771 u16 hdr_mac;
2772
2773 hdr_mac = *((u16 *)skb->data);
2774 /* tr multicast? */
2775 switch (card->info.link_type) {
2776 case QETH_LINK_TYPE_HSTR:
2777 case QETH_LINK_TYPE_LANE_TR:
2778 if ((hdr_mac == QETH_TR_MAC_NC) ||
2779 (hdr_mac == QETH_TR_MAC_C))
2780 return RTN_MULTICAST;
2781 break;
2782 /* eth or so multicast? */
2783 default:
2784 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2785 (hdr_mac == QETH_ETH_MAC_V6))
2786 return RTN_MULTICAST;
2787 }
2788 }
2789 return cast_type;
2790 }
2791
2792 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2793 struct sk_buff *skb, int ipv, int cast_type)
2794 {
2795 struct neighbour *n = NULL;
2796 struct dst_entry *dst;
2797
2798 memset(hdr, 0, sizeof(struct qeth_hdr));
2799 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2800 hdr->hdr.l3.ext_flags = 0;
2801
2802 /*
2803 * before we're going to overwrite this location with next hop ip.
2804 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2805 */
2806 if (card->vlangrp && vlan_tx_tag_present(skb)) {
2807 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2808 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2809 else
2810 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2811 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2812 }
2813
2814 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2815 dst = skb_dst(skb);
2816 if (dst)
2817 n = dst_get_neighbour(dst);
2818 if (ipv == 4) {
2819 /* IPv4 */
2820 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2821 memset(hdr->hdr.l3.dest_addr, 0, 12);
2822 if (n) {
2823 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2824 *((u32 *) n->primary_key);
2825 } else {
2826 /* fill in destination address used in ip header */
2827 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2828 ip_hdr(skb)->daddr;
2829 }
2830 } else if (ipv == 6) {
2831 /* IPv6 */
2832 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2833 if (card->info.type == QETH_CARD_TYPE_IQD)
2834 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2835 if (n) {
2836 memcpy(hdr->hdr.l3.dest_addr,
2837 n->primary_key, 16);
2838 } else {
2839 /* fill in destination address used in ip header */
2840 memcpy(hdr->hdr.l3.dest_addr,
2841 &ipv6_hdr(skb)->daddr, 16);
2842 }
2843 } else {
2844 /* passthrough */
2845 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2846 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2847 sizeof(__u16), skb->dev->broadcast, 6)) {
2848 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2849 QETH_HDR_PASSTHRU;
2850 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2851 skb->dev->broadcast, 6)) {
2852 /* broadcast? */
2853 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2854 QETH_HDR_PASSTHRU;
2855 } else {
2856 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2857 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2858 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2859 }
2860 }
2861 }
2862
2863 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2864 struct qeth_hdr *hdr, struct sk_buff *skb)
2865 {
2866 struct iphdr *iph = ip_hdr(skb);
2867
2868 /* tcph->check contains already the pseudo hdr checksum
2869 * so just set the header flags
2870 */
2871 if (iph->protocol == IPPROTO_UDP)
2872 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2873 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2874 QETH_HDR_EXT_CSUM_HDR_REQ;
2875 iph->check = 0;
2876 if (card->options.performance_stats)
2877 card->perf_stats.tx_csum++;
2878 }
2879
2880 static void qeth_tso_fill_header(struct qeth_card *card,
2881 struct qeth_hdr *qhdr, struct sk_buff *skb)
2882 {
2883 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2884 struct tcphdr *tcph = tcp_hdr(skb);
2885 struct iphdr *iph = ip_hdr(skb);
2886 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2887
2888 /*fix header to TSO values ...*/
2889 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2890 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2891 /*set values which are fix for the first approach ...*/
2892 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2893 hdr->ext.imb_hdr_no = 1;
2894 hdr->ext.hdr_type = 1;
2895 hdr->ext.hdr_version = 1;
2896 hdr->ext.hdr_len = 28;
2897 /*insert non-fix values */
2898 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2899 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2900 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2901 sizeof(struct qeth_hdr_tso));
2902 tcph->check = 0;
2903 if (skb->protocol == ETH_P_IPV6) {
2904 ip6h->payload_len = 0;
2905 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2906 0, IPPROTO_TCP, 0);
2907 } else {
2908 /*OSA want us to set these values ...*/
2909 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2910 0, IPPROTO_TCP, 0);
2911 iph->tot_len = 0;
2912 iph->check = 0;
2913 }
2914 }
2915
2916 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2917 {
2918 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2919 tcp_hdr(skb)->doff * 4;
2920 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2921 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2922 elements += skb_shinfo(skb)->nr_frags;
2923 return elements;
2924 }
2925
2926 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2927 {
2928 int rc;
2929 u16 *tag;
2930 struct qeth_hdr *hdr = NULL;
2931 int elements_needed = 0;
2932 int elems;
2933 struct qeth_card *card = dev->ml_priv;
2934 struct sk_buff *new_skb = NULL;
2935 int ipv = qeth_get_ip_version(skb);
2936 int cast_type = qeth_l3_get_cast_type(card, skb);
2937 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2938 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2939 int tx_bytes = skb->len;
2940 bool large_send;
2941 int data_offset = -1;
2942 int nr_frags;
2943
2944 if (((card->info.type == QETH_CARD_TYPE_IQD) && (!ipv)) ||
2945 card->options.sniffer)
2946 goto tx_drop;
2947
2948 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2949 card->stats.tx_carrier_errors++;
2950 goto tx_drop;
2951 }
2952
2953 if ((cast_type == RTN_BROADCAST) &&
2954 (card->info.broadcast_capable == 0))
2955 goto tx_drop;
2956
2957 if (card->options.performance_stats) {
2958 card->perf_stats.outbound_cnt++;
2959 card->perf_stats.outbound_start_time = qeth_get_micros();
2960 }
2961
2962 large_send = skb_is_gso(skb);
2963
2964 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2965 (skb_shinfo(skb)->nr_frags == 0)) {
2966 new_skb = skb;
2967 data_offset = ETH_HLEN;
2968 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2969 if (!hdr)
2970 goto tx_drop;
2971 elements_needed++;
2972 } else {
2973 /* create a clone with writeable headroom */
2974 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2975 + VLAN_HLEN);
2976 if (!new_skb)
2977 goto tx_drop;
2978 }
2979
2980 if (card->info.type == QETH_CARD_TYPE_IQD) {
2981 if (data_offset < 0)
2982 skb_pull(new_skb, ETH_HLEN);
2983 } else {
2984 if (ipv == 4) {
2985 if (card->dev->type == ARPHRD_IEEE802_TR)
2986 skb_pull(new_skb, TR_HLEN);
2987 else
2988 skb_pull(new_skb, ETH_HLEN);
2989 }
2990
2991 if (ipv != 4 && card->vlangrp &&
2992 vlan_tx_tag_present(new_skb)) {
2993 skb_push(new_skb, VLAN_HLEN);
2994 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2995 skb_copy_to_linear_data_offset(new_skb, 4,
2996 new_skb->data + 8, 4);
2997 skb_copy_to_linear_data_offset(new_skb, 8,
2998 new_skb->data + 12, 4);
2999 tag = (u16 *)(new_skb->data + 12);
3000 *tag = __constant_htons(ETH_P_8021Q);
3001 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3002 new_skb->vlan_tci = 0;
3003 }
3004 }
3005
3006 netif_stop_queue(dev);
3007
3008 /* fix hardware limitation: as long as we do not have sbal
3009 * chaining we can not send long frag lists
3010 */
3011 if (large_send) {
3012 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3013 if (skb_linearize(new_skb))
3014 goto tx_drop;
3015 if (card->options.performance_stats)
3016 card->perf_stats.tx_lin++;
3017 }
3018 }
3019
3020 if (large_send && (cast_type == RTN_UNSPEC)) {
3021 hdr = (struct qeth_hdr *)skb_push(new_skb,
3022 sizeof(struct qeth_hdr_tso));
3023 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3024 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3025 qeth_tso_fill_header(card, hdr, new_skb);
3026 elements_needed++;
3027 } else {
3028 if (data_offset < 0) {
3029 hdr = (struct qeth_hdr *)skb_push(new_skb,
3030 sizeof(struct qeth_hdr));
3031 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3032 cast_type);
3033 } else {
3034 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3035 cast_type);
3036 hdr->hdr.l3.length = new_skb->len - data_offset;
3037 }
3038
3039 if (skb->ip_summed == CHECKSUM_PARTIAL)
3040 qeth_l3_hdr_csum(card, hdr, new_skb);
3041 }
3042
3043 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3044 elements_needed);
3045 if (!elems) {
3046 if (data_offset >= 0)
3047 kmem_cache_free(qeth_core_header_cache, hdr);
3048 goto tx_drop;
3049 }
3050 elements_needed += elems;
3051 nr_frags = skb_shinfo(new_skb)->nr_frags;
3052
3053 if (card->info.type != QETH_CARD_TYPE_IQD) {
3054 int len;
3055 if (large_send)
3056 len = ((unsigned long)tcp_hdr(new_skb) +
3057 tcp_hdr(new_skb)->doff * 4) -
3058 (unsigned long)new_skb->data;
3059 else
3060 len = sizeof(struct qeth_hdr_layer3);
3061
3062 if (qeth_hdr_chk_and_bounce(new_skb, len))
3063 goto tx_drop;
3064 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3065 elements_needed);
3066 } else
3067 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3068 elements_needed, data_offset, 0);
3069
3070 if (!rc) {
3071 card->stats.tx_packets++;
3072 card->stats.tx_bytes += tx_bytes;
3073 if (new_skb != skb)
3074 dev_kfree_skb_any(skb);
3075 if (card->options.performance_stats) {
3076 if (large_send) {
3077 card->perf_stats.large_send_bytes += tx_bytes;
3078 card->perf_stats.large_send_cnt++;
3079 }
3080 if (nr_frags) {
3081 card->perf_stats.sg_skbs_sent++;
3082 /* nr_frags + skb->data */
3083 card->perf_stats.sg_frags_sent += nr_frags + 1;
3084 }
3085 }
3086 rc = NETDEV_TX_OK;
3087 } else {
3088 if (data_offset >= 0)
3089 kmem_cache_free(qeth_core_header_cache, hdr);
3090
3091 if (rc == -EBUSY) {
3092 if (new_skb != skb)
3093 dev_kfree_skb_any(new_skb);
3094 return NETDEV_TX_BUSY;
3095 } else
3096 goto tx_drop;
3097 }
3098
3099 netif_wake_queue(dev);
3100 if (card->options.performance_stats)
3101 card->perf_stats.outbound_time += qeth_get_micros() -
3102 card->perf_stats.outbound_start_time;
3103 return rc;
3104
3105 tx_drop:
3106 card->stats.tx_dropped++;
3107 card->stats.tx_errors++;
3108 if ((new_skb != skb) && new_skb)
3109 dev_kfree_skb_any(new_skb);
3110 dev_kfree_skb_any(skb);
3111 netif_wake_queue(dev);
3112 return NETDEV_TX_OK;
3113 }
3114
3115 static int __qeth_l3_open(struct net_device *dev)
3116 {
3117 struct qeth_card *card = dev->ml_priv;
3118 int rc = 0;
3119
3120 QETH_CARD_TEXT(card, 4, "qethopen");
3121 if (card->state == CARD_STATE_UP)
3122 return rc;
3123 if (card->state != CARD_STATE_SOFTSETUP)
3124 return -ENODEV;
3125 card->data.state = CH_STATE_UP;
3126 card->state = CARD_STATE_UP;
3127 netif_start_queue(dev);
3128
3129 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3130 napi_enable(&card->napi);
3131 napi_schedule(&card->napi);
3132 } else
3133 rc = -EIO;
3134 return rc;
3135 }
3136
3137 static int qeth_l3_open(struct net_device *dev)
3138 {
3139 struct qeth_card *card = dev->ml_priv;
3140
3141 QETH_CARD_TEXT(card, 5, "qethope_");
3142 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3143 QETH_CARD_TEXT(card, 3, "openREC");
3144 return -ERESTARTSYS;
3145 }
3146 return __qeth_l3_open(dev);
3147 }
3148
3149 static int qeth_l3_stop(struct net_device *dev)
3150 {
3151 struct qeth_card *card = dev->ml_priv;
3152
3153 QETH_CARD_TEXT(card, 4, "qethstop");
3154 netif_tx_disable(dev);
3155 if (card->state == CARD_STATE_UP) {
3156 card->state = CARD_STATE_SOFTSETUP;
3157 napi_disable(&card->napi);
3158 }
3159 return 0;
3160 }
3161
3162 static u32 qeth_l3_fix_features(struct net_device *dev, u32 features)
3163 {
3164 struct qeth_card *card = dev->ml_priv;
3165
3166 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3167 features &= ~NETIF_F_IP_CSUM;
3168 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3169 features &= ~NETIF_F_TSO;
3170 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3171 features &= ~NETIF_F_RXCSUM;
3172
3173 return features;
3174 }
3175
3176 static int qeth_l3_set_features(struct net_device *dev, u32 features)
3177 {
3178 struct qeth_card *card = dev->ml_priv;
3179 u32 changed = dev->features ^ features;
3180 int err;
3181
3182 if (!(changed & NETIF_F_RXCSUM))
3183 return 0;
3184
3185 if (card->state == CARD_STATE_DOWN ||
3186 card->state == CARD_STATE_RECOVER)
3187 return 0;
3188
3189 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3190 if (err)
3191 dev->features = features ^ NETIF_F_RXCSUM;
3192
3193 return err;
3194 }
3195
3196 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3197 .get_link = ethtool_op_get_link,
3198 .get_strings = qeth_core_get_strings,
3199 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3200 .get_sset_count = qeth_core_get_sset_count,
3201 .get_drvinfo = qeth_core_get_drvinfo,
3202 .get_settings = qeth_core_ethtool_get_settings,
3203 };
3204
3205 /*
3206 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3207 * NOARP on the netdevice is no option because it also turns off neighbor
3208 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3209 * arp resolution but we want the hard header (packet socket will work
3210 * e.g. tcpdump)
3211 */
3212 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3213 {
3214 n->nud_state = NUD_NOARP;
3215 memcpy(n->ha, "FAKELL", 6);
3216 n->output = n->ops->connected_output;
3217 return 0;
3218 }
3219
3220 static int
3221 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3222 {
3223 if (np->tbl->family == AF_INET)
3224 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3225
3226 return 0;
3227 }
3228
3229 static const struct net_device_ops qeth_l3_netdev_ops = {
3230 .ndo_open = qeth_l3_open,
3231 .ndo_stop = qeth_l3_stop,
3232 .ndo_get_stats = qeth_get_stats,
3233 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3234 .ndo_validate_addr = eth_validate_addr,
3235 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3236 .ndo_do_ioctl = qeth_l3_do_ioctl,
3237 .ndo_change_mtu = qeth_change_mtu,
3238 .ndo_fix_features = qeth_l3_fix_features,
3239 .ndo_set_features = qeth_l3_set_features,
3240 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3241 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3242 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3243 .ndo_tx_timeout = qeth_tx_timeout,
3244 };
3245
3246 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3247 .ndo_open = qeth_l3_open,
3248 .ndo_stop = qeth_l3_stop,
3249 .ndo_get_stats = qeth_get_stats,
3250 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3251 .ndo_validate_addr = eth_validate_addr,
3252 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3253 .ndo_do_ioctl = qeth_l3_do_ioctl,
3254 .ndo_change_mtu = qeth_change_mtu,
3255 .ndo_fix_features = qeth_l3_fix_features,
3256 .ndo_set_features = qeth_l3_set_features,
3257 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3258 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3259 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3260 .ndo_tx_timeout = qeth_tx_timeout,
3261 .ndo_neigh_setup = qeth_l3_neigh_setup,
3262 };
3263
3264 static int qeth_l3_setup_netdev(struct qeth_card *card)
3265 {
3266 if (card->info.type == QETH_CARD_TYPE_OSD ||
3267 card->info.type == QETH_CARD_TYPE_OSX) {
3268 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3269 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3270 #ifdef CONFIG_TR
3271 card->dev = alloc_trdev(0);
3272 #endif
3273 if (!card->dev)
3274 return -ENODEV;
3275 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3276 } else {
3277 card->dev = alloc_etherdev(0);
3278 if (!card->dev)
3279 return -ENODEV;
3280 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3281
3282 /*IPv6 address autoconfiguration stuff*/
3283 qeth_l3_get_unique_id(card);
3284 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3285 card->dev->dev_id = card->info.unique_id &
3286 0xffff;
3287 if (!card->info.guestlan) {
3288 card->dev->hw_features = NETIF_F_SG |
3289 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3290 NETIF_F_TSO;
3291 card->dev->features = NETIF_F_RXCSUM;
3292 }
3293 }
3294 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3295 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3296 if (!card->dev)
3297 return -ENODEV;
3298 card->dev->flags |= IFF_NOARP;
3299 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3300 qeth_l3_iqd_read_initial_mac(card);
3301 } else
3302 return -ENODEV;
3303
3304 card->dev->ml_priv = card;
3305 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3306 card->dev->mtu = card->info.initial_mtu;
3307 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3308 card->dev->features |= NETIF_F_HW_VLAN_TX |
3309 NETIF_F_HW_VLAN_RX |
3310 NETIF_F_HW_VLAN_FILTER;
3311 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3312 card->dev->gso_max_size = 15 * PAGE_SIZE;
3313
3314 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3315 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3316 return register_netdev(card->dev);
3317 }
3318
3319 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3320 {
3321 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3322
3323 qeth_l3_create_device_attributes(&gdev->dev);
3324 card->options.layer2 = 0;
3325 card->info.hwtrap = 0;
3326 card->discipline.start_poll = qeth_qdio_start_poll;
3327 card->discipline.input_handler = (qdio_handler_t *)
3328 qeth_qdio_input_handler;
3329 card->discipline.output_handler = (qdio_handler_t *)
3330 qeth_qdio_output_handler;
3331 card->discipline.recover = qeth_l3_recover;
3332 return 0;
3333 }
3334
3335 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3336 {
3337 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3338
3339 qeth_l3_remove_device_attributes(&cgdev->dev);
3340
3341 qeth_set_allowed_threads(card, 0, 1);
3342 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3343
3344 if (cgdev->state == CCWGROUP_ONLINE)
3345 qeth_l3_set_offline(cgdev);
3346
3347 if (card->dev) {
3348 unregister_netdev(card->dev);
3349 card->dev = NULL;
3350 }
3351
3352 qeth_l3_clear_ip_list(card, 0);
3353 qeth_l3_clear_ipato_list(card);
3354 return;
3355 }
3356
3357 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3358 {
3359 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3360 int rc = 0;
3361 enum qeth_card_states recover_flag;
3362
3363 BUG_ON(!card);
3364 mutex_lock(&card->discipline_mutex);
3365 mutex_lock(&card->conf_mutex);
3366 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3367 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3368
3369 recover_flag = card->state;
3370 rc = qeth_core_hardsetup_card(card);
3371 if (rc) {
3372 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3373 rc = -ENODEV;
3374 goto out_remove;
3375 }
3376
3377 if (!card->dev && qeth_l3_setup_netdev(card)) {
3378 rc = -ENODEV;
3379 goto out_remove;
3380 }
3381
3382 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3383 if (card->info.hwtrap &&
3384 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3385 card->info.hwtrap = 0;
3386 } else
3387 card->info.hwtrap = 0;
3388
3389 card->state = CARD_STATE_HARDSETUP;
3390 memset(&card->rx, 0, sizeof(struct qeth_rx));
3391 qeth_print_status_message(card);
3392
3393 /* softsetup */
3394 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3395
3396 rc = qeth_send_startlan(card);
3397 if (rc) {
3398 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3399 if (rc == 0xe080) {
3400 dev_warn(&card->gdev->dev,
3401 "The LAN is offline\n");
3402 card->lan_online = 0;
3403 goto contin;
3404 }
3405 rc = -ENODEV;
3406 goto out_remove;
3407 } else
3408 card->lan_online = 1;
3409
3410 contin:
3411 rc = qeth_l3_setadapter_parms(card);
3412 if (rc)
3413 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3414 if (!card->options.sniffer) {
3415 rc = qeth_l3_start_ipassists(card);
3416 if (rc)
3417 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3418 rc = qeth_l3_setrouting_v4(card);
3419 if (rc)
3420 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3421 rc = qeth_l3_setrouting_v6(card);
3422 if (rc)
3423 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3424 }
3425 netif_tx_disable(card->dev);
3426
3427 rc = qeth_init_qdio_queues(card);
3428 if (rc) {
3429 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3430 rc = -ENODEV;
3431 goto out_remove;
3432 }
3433 card->state = CARD_STATE_SOFTSETUP;
3434
3435 qeth_set_allowed_threads(card, 0xffffffff, 0);
3436 qeth_l3_set_ip_addr_list(card);
3437 if (card->lan_online)
3438 netif_carrier_on(card->dev);
3439 else
3440 netif_carrier_off(card->dev);
3441 if (recover_flag == CARD_STATE_RECOVER) {
3442 if (recovery_mode)
3443 __qeth_l3_open(card->dev);
3444 else {
3445 rtnl_lock();
3446 dev_open(card->dev);
3447 rtnl_unlock();
3448 }
3449 qeth_l3_set_multicast_list(card->dev);
3450 }
3451 /* let user_space know that device is online */
3452 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3453 mutex_unlock(&card->conf_mutex);
3454 mutex_unlock(&card->discipline_mutex);
3455 return 0;
3456 out_remove:
3457 qeth_l3_stop_card(card, 0);
3458 ccw_device_set_offline(CARD_DDEV(card));
3459 ccw_device_set_offline(CARD_WDEV(card));
3460 ccw_device_set_offline(CARD_RDEV(card));
3461 if (recover_flag == CARD_STATE_RECOVER)
3462 card->state = CARD_STATE_RECOVER;
3463 else
3464 card->state = CARD_STATE_DOWN;
3465 mutex_unlock(&card->conf_mutex);
3466 mutex_unlock(&card->discipline_mutex);
3467 return rc;
3468 }
3469
3470 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3471 {
3472 return __qeth_l3_set_online(gdev, 0);
3473 }
3474
3475 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3476 int recovery_mode)
3477 {
3478 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3479 int rc = 0, rc2 = 0, rc3 = 0;
3480 enum qeth_card_states recover_flag;
3481
3482 mutex_lock(&card->discipline_mutex);
3483 mutex_lock(&card->conf_mutex);
3484 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3485 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3486
3487 if (card->dev && netif_carrier_ok(card->dev))
3488 netif_carrier_off(card->dev);
3489 recover_flag = card->state;
3490 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3491 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3492 card->info.hwtrap = 1;
3493 }
3494 qeth_l3_stop_card(card, recovery_mode);
3495 rc = ccw_device_set_offline(CARD_DDEV(card));
3496 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3497 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3498 if (!rc)
3499 rc = (rc2) ? rc2 : rc3;
3500 if (rc)
3501 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3502 if (recover_flag == CARD_STATE_UP)
3503 card->state = CARD_STATE_RECOVER;
3504 /* let user_space know that device is offline */
3505 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3506 mutex_unlock(&card->conf_mutex);
3507 mutex_unlock(&card->discipline_mutex);
3508 return 0;
3509 }
3510
3511 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3512 {
3513 return __qeth_l3_set_offline(cgdev, 0);
3514 }
3515
3516 static int qeth_l3_recover(void *ptr)
3517 {
3518 struct qeth_card *card;
3519 int rc = 0;
3520
3521 card = (struct qeth_card *) ptr;
3522 QETH_CARD_TEXT(card, 2, "recover1");
3523 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3524 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3525 return 0;
3526 QETH_CARD_TEXT(card, 2, "recover2");
3527 dev_warn(&card->gdev->dev,
3528 "A recovery process has been started for the device\n");
3529 __qeth_l3_set_offline(card->gdev, 1);
3530 rc = __qeth_l3_set_online(card->gdev, 1);
3531 if (!rc)
3532 dev_info(&card->gdev->dev,
3533 "Device successfully recovered!\n");
3534 else {
3535 rtnl_lock();
3536 dev_close(card->dev);
3537 rtnl_unlock();
3538 dev_warn(&card->gdev->dev, "The qeth device driver "
3539 "failed to recover an error on the device\n");
3540 }
3541 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3542 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3543 return 0;
3544 }
3545
3546 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3547 {
3548 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3549 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3550 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3551 qeth_qdio_clear_card(card, 0);
3552 qeth_clear_qdio_buffers(card);
3553 }
3554
3555 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3556 {
3557 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3558
3559 if (card->dev)
3560 netif_device_detach(card->dev);
3561 qeth_set_allowed_threads(card, 0, 1);
3562 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3563 if (gdev->state == CCWGROUP_OFFLINE)
3564 return 0;
3565 if (card->state == CARD_STATE_UP) {
3566 if (card->info.hwtrap)
3567 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3568 __qeth_l3_set_offline(card->gdev, 1);
3569 } else
3570 __qeth_l3_set_offline(card->gdev, 0);
3571 return 0;
3572 }
3573
3574 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3575 {
3576 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3577 int rc = 0;
3578
3579 if (gdev->state == CCWGROUP_OFFLINE)
3580 goto out;
3581
3582 if (card->state == CARD_STATE_RECOVER) {
3583 rc = __qeth_l3_set_online(card->gdev, 1);
3584 if (rc) {
3585 rtnl_lock();
3586 dev_close(card->dev);
3587 rtnl_unlock();
3588 }
3589 } else
3590 rc = __qeth_l3_set_online(card->gdev, 0);
3591 out:
3592 qeth_set_allowed_threads(card, 0xffffffff, 0);
3593 if (card->dev)
3594 netif_device_attach(card->dev);
3595 if (rc)
3596 dev_warn(&card->gdev->dev, "The qeth device driver "
3597 "failed to recover an error on the device\n");
3598 return rc;
3599 }
3600
3601 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3602 .probe = qeth_l3_probe_device,
3603 .remove = qeth_l3_remove_device,
3604 .set_online = qeth_l3_set_online,
3605 .set_offline = qeth_l3_set_offline,
3606 .shutdown = qeth_l3_shutdown,
3607 .freeze = qeth_l3_pm_suspend,
3608 .thaw = qeth_l3_pm_resume,
3609 .restore = qeth_l3_pm_resume,
3610 };
3611 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3612
3613 static int qeth_l3_ip_event(struct notifier_block *this,
3614 unsigned long event, void *ptr)
3615 {
3616 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3617 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3618 struct qeth_ipaddr *addr;
3619 struct qeth_card *card;
3620
3621 if (dev_net(dev) != &init_net)
3622 return NOTIFY_DONE;
3623
3624 card = qeth_l3_get_card_from_dev(dev);
3625 QETH_CARD_TEXT(card, 3, "ipevent");
3626 if (!card)
3627 return NOTIFY_DONE;
3628
3629 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3630 if (addr != NULL) {
3631 addr->u.a4.addr = ifa->ifa_address;
3632 addr->u.a4.mask = ifa->ifa_mask;
3633 addr->type = QETH_IP_TYPE_NORMAL;
3634 } else
3635 goto out;
3636
3637 switch (event) {
3638 case NETDEV_UP:
3639 if (!qeth_l3_add_ip(card, addr))
3640 kfree(addr);
3641 break;
3642 case NETDEV_DOWN:
3643 if (!qeth_l3_delete_ip(card, addr))
3644 kfree(addr);
3645 break;
3646 default:
3647 break;
3648 }
3649 qeth_l3_set_ip_addr_list(card);
3650 out:
3651 return NOTIFY_DONE;
3652 }
3653
3654 static struct notifier_block qeth_l3_ip_notifier = {
3655 qeth_l3_ip_event,
3656 NULL,
3657 };
3658
3659 #ifdef CONFIG_QETH_IPV6
3660 /**
3661 * IPv6 event handler
3662 */
3663 static int qeth_l3_ip6_event(struct notifier_block *this,
3664 unsigned long event, void *ptr)
3665 {
3666 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3667 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3668 struct qeth_ipaddr *addr;
3669 struct qeth_card *card;
3670
3671
3672 card = qeth_l3_get_card_from_dev(dev);
3673 if (!card)
3674 return NOTIFY_DONE;
3675 QETH_CARD_TEXT(card, 3, "ip6event");
3676 if (!qeth_is_supported(card, IPA_IPV6))
3677 return NOTIFY_DONE;
3678
3679 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3680 if (addr != NULL) {
3681 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3682 addr->u.a6.pfxlen = ifa->prefix_len;
3683 addr->type = QETH_IP_TYPE_NORMAL;
3684 } else
3685 goto out;
3686
3687 switch (event) {
3688 case NETDEV_UP:
3689 if (!qeth_l3_add_ip(card, addr))
3690 kfree(addr);
3691 break;
3692 case NETDEV_DOWN:
3693 if (!qeth_l3_delete_ip(card, addr))
3694 kfree(addr);
3695 break;
3696 default:
3697 break;
3698 }
3699 qeth_l3_set_ip_addr_list(card);
3700 out:
3701 return NOTIFY_DONE;
3702 }
3703
3704 static struct notifier_block qeth_l3_ip6_notifier = {
3705 qeth_l3_ip6_event,
3706 NULL,
3707 };
3708 #endif
3709
3710 static int qeth_l3_register_notifiers(void)
3711 {
3712 int rc;
3713
3714 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3715 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3716 if (rc)
3717 return rc;
3718 #ifdef CONFIG_QETH_IPV6
3719 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3720 if (rc) {
3721 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3722 return rc;
3723 }
3724 #else
3725 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3726 #endif
3727 return 0;
3728 }
3729
3730 static void qeth_l3_unregister_notifiers(void)
3731 {
3732
3733 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3734 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3735 #ifdef CONFIG_QETH_IPV6
3736 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3737 #endif /* QETH_IPV6 */
3738 }
3739
3740 static int __init qeth_l3_init(void)
3741 {
3742 int rc = 0;
3743
3744 pr_info("register layer 3 discipline\n");
3745 rc = qeth_l3_register_notifiers();
3746 return rc;
3747 }
3748
3749 static void __exit qeth_l3_exit(void)
3750 {
3751 qeth_l3_unregister_notifiers();
3752 pr_info("unregister layer 3 discipline\n");
3753 }
3754
3755 module_init(qeth_l3_init);
3756 module_exit(qeth_l3_exit);
3757 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3758 MODULE_DESCRIPTION("qeth layer 3 discipline");
3759 MODULE_LICENSE("GPL");
Linux with added FPC-III support