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1/*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11#define KMSG_COMPONENT "qeth"
12#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/bitops.h>
17#include <linux/string.h>
18#include <linux/errno.h>
19#include <linux/kernel.h>
20#include <linux/etherdevice.h>
21#include <linux/mii.h>
22#include <linux/ip.h>
23#include <linux/ipv6.h>
24#include <linux/inetdevice.h>
25#include <linux/igmp.h>
26#include <linux/slab.h>
27#include <linux/if_vlan.h>
28
29#include <net/ip.h>
30#include <net/arp.h>
31#include <net/ip6_checksum.h>
32
33#include "qeth_l3.h"
34
35
36static int qeth_l3_set_offline(struct ccwgroup_device *);
37static int qeth_l3_recover(void *);
38static int qeth_l3_stop(struct net_device *);
39static void qeth_l3_set_multicast_list(struct net_device *);
40static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
41static int qeth_l3_register_addr_entry(struct qeth_card *,
42 struct qeth_ipaddr *);
43static int qeth_l3_deregister_addr_entry(struct qeth_card *,
44 struct qeth_ipaddr *);
45static int __qeth_l3_set_online(struct ccwgroup_device *, int);
46static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
47
48static int qeth_l3_isxdigit(char *buf)
49{
50 while (*buf) {
51 if (!isxdigit(*buf++))
52 return 0;
53 }
54 return 1;
55}
56
57void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
58{
59 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
60}
61
62int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
63{
64 int count = 0, rc = 0;
65 int in[4];
66 char c;
67
68 rc = sscanf(buf, "%u.%u.%u.%u%c",
69 &in[0], &in[1], &in[2], &in[3], &c);
70 if (rc != 4 && (rc != 5 || c != '\n'))
71 return -EINVAL;
72 for (count = 0; count < 4; count++) {
73 if (in[count] > 255)
74 return -EINVAL;
75 addr[count] = in[count];
76 }
77 return 0;
78}
79
80void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
81{
82 sprintf(buf, "%pI6", addr);
83}
84
85int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
86{
87 const char *end, *end_tmp, *start;
88 __u16 *in;
89 char num[5];
90 int num2, cnt, out, found, save_cnt;
91 unsigned short in_tmp[8] = {0, };
92
93 cnt = out = found = save_cnt = num2 = 0;
94 end = start = buf;
95 in = (__u16 *) addr;
96 memset(in, 0, 16);
97 while (*end) {
98 end = strchr(start, ':');
99 if (end == NULL) {
100 end = buf + strlen(buf);
101 end_tmp = strchr(start, '\n');
102 if (end_tmp != NULL)
103 end = end_tmp;
104 out = 1;
105 }
106 if ((end - start)) {
107 memset(num, 0, 5);
108 if ((end - start) > 4)
109 return -EINVAL;
110 memcpy(num, start, end - start);
111 if (!qeth_l3_isxdigit(num))
112 return -EINVAL;
113 sscanf(start, "%x", &num2);
114 if (found)
115 in_tmp[save_cnt++] = num2;
116 else
117 in[cnt++] = num2;
118 if (out)
119 break;
120 } else {
121 if (found)
122 return -EINVAL;
123 found = 1;
124 }
125 start = ++end;
126 }
127 if (cnt + save_cnt > 8)
128 return -EINVAL;
129 cnt = 7;
130 while (save_cnt)
131 in[cnt--] = in_tmp[--save_cnt];
132 return 0;
133}
134
135void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
136 char *buf)
137{
138 if (proto == QETH_PROT_IPV4)
139 qeth_l3_ipaddr4_to_string(addr, buf);
140 else if (proto == QETH_PROT_IPV6)
141 qeth_l3_ipaddr6_to_string(addr, buf);
142}
143
144int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
145 __u8 *addr)
146{
147 if (proto == QETH_PROT_IPV4)
148 return qeth_l3_string_to_ipaddr4(buf, addr);
149 else if (proto == QETH_PROT_IPV6)
150 return qeth_l3_string_to_ipaddr6(buf, addr);
151 else
152 return -EINVAL;
153}
154
155static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
156{
157 int i, j;
158 u8 octet;
159
160 for (i = 0; i < len; ++i) {
161 octet = addr[i];
162 for (j = 7; j >= 0; --j) {
163 bits[i*8 + j] = octet & 1;
164 octet >>= 1;
165 }
166 }
167}
168
169int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
170 struct qeth_ipaddr *addr)
171{
172 struct qeth_ipato_entry *ipatoe;
173 u8 addr_bits[128] = {0, };
174 u8 ipatoe_bits[128] = {0, };
175 int rc = 0;
176
177 if (!card->ipato.enabled)
178 return 0;
179
180 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
181 (addr->proto == QETH_PROT_IPV4)? 4:16);
182 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
183 if (addr->proto != ipatoe->proto)
184 continue;
185 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
186 (ipatoe->proto == QETH_PROT_IPV4) ?
187 4 : 16);
188 if (addr->proto == QETH_PROT_IPV4)
189 rc = !memcmp(addr_bits, ipatoe_bits,
190 min(32, ipatoe->mask_bits));
191 else
192 rc = !memcmp(addr_bits, ipatoe_bits,
193 min(128, ipatoe->mask_bits));
194 if (rc)
195 break;
196 }
197 /* invert? */
198 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
199 rc = !rc;
200 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
201 rc = !rc;
202
203 return rc;
204}
205
206/*
207 * Add IP to be added to todo list. If there is already an "add todo"
208 * in this list we just incremenent the reference count.
209 * Returns 0 if we just incremented reference count.
210 */
211static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
212 struct qeth_ipaddr *addr, int add)
213{
214 struct qeth_ipaddr *tmp, *t;
215 int found = 0;
216
217 if (card->options.sniffer)
218 return 0;
219 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
220 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
221 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
222 return 0;
223 if ((tmp->proto == QETH_PROT_IPV4) &&
224 (addr->proto == QETH_PROT_IPV4) &&
225 (tmp->type == addr->type) &&
226 (tmp->is_multicast == addr->is_multicast) &&
227 (tmp->u.a4.addr == addr->u.a4.addr) &&
228 (tmp->u.a4.mask == addr->u.a4.mask)) {
229 found = 1;
230 break;
231 }
232 if ((tmp->proto == QETH_PROT_IPV6) &&
233 (addr->proto == QETH_PROT_IPV6) &&
234 (tmp->type == addr->type) &&
235 (tmp->is_multicast == addr->is_multicast) &&
236 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
237 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
238 sizeof(struct in6_addr)) == 0)) {
239 found = 1;
240 break;
241 }
242 }
243 if (found) {
244 if (addr->users != 0)
245 tmp->users += addr->users;
246 else
247 tmp->users += add ? 1 : -1;
248 if (tmp->users == 0) {
249 list_del(&tmp->entry);
250 kfree(tmp);
251 }
252 return 0;
253 } else {
254 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
255 list_add(&addr->entry, card->ip_tbd_list);
256 else {
257 if (addr->users == 0)
258 addr->users += add ? 1 : -1;
259 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
260 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
261 QETH_CARD_TEXT(card, 2, "tkovaddr");
262 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
263 }
264 list_add_tail(&addr->entry, card->ip_tbd_list);
265 }
266 return 1;
267 }
268}
269
270static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
271{
272 unsigned long flags;
273 int rc = 0;
274
275 QETH_CARD_TEXT(card, 4, "delip");
276
277 if (addr->proto == QETH_PROT_IPV4)
278 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
279 else {
280 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
281 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
282 }
283 spin_lock_irqsave(&card->ip_lock, flags);
284 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
285 spin_unlock_irqrestore(&card->ip_lock, flags);
286 return rc;
287}
288
289static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
290{
291 unsigned long flags;
292 int rc = 0;
293
294 QETH_CARD_TEXT(card, 4, "addip");
295 if (addr->proto == QETH_PROT_IPV4)
296 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
297 else {
298 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
299 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
300 }
301 spin_lock_irqsave(&card->ip_lock, flags);
302 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
303 spin_unlock_irqrestore(&card->ip_lock, flags);
304 return rc;
305}
306
307
308static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
309 enum qeth_prot_versions prot)
310{
311 struct qeth_ipaddr *addr;
312
313 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
314 if (addr == NULL) {
315 return NULL;
316 }
317 addr->type = QETH_IP_TYPE_NORMAL;
318 addr->proto = prot;
319 return addr;
320}
321
322static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
323{
324 struct qeth_ipaddr *iptodo;
325 unsigned long flags;
326
327 QETH_CARD_TEXT(card, 4, "delmc");
328 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
329 if (!iptodo) {
330 QETH_CARD_TEXT(card, 2, "dmcnomem");
331 return;
332 }
333 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
334 spin_lock_irqsave(&card->ip_lock, flags);
335 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
336 kfree(iptodo);
337 spin_unlock_irqrestore(&card->ip_lock, flags);
338}
339
340/*
341 * Add/remove address to/from card's ip list, i.e. try to add or remove
342 * reference to/from an IP address that is already registered on the card.
343 * Returns:
344 * 0 address was on card and its reference count has been adjusted,
345 * but is still > 0, so nothing has to be done
346 * also returns 0 if card was not on card and the todo was to delete
347 * the address -> there is also nothing to be done
348 * 1 address was not on card and the todo is to add it to the card's ip
349 * list
350 * -1 address was on card and its reference count has been decremented
351 * to <= 0 by the todo -> address must be removed from card
352 */
353static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
354 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
355{
356 struct qeth_ipaddr *addr;
357 int found = 0;
358
359 list_for_each_entry(addr, &card->ip_list, entry) {
360 if ((addr->proto == QETH_PROT_IPV4) &&
361 (todo->proto == QETH_PROT_IPV4) &&
362 (addr->type == todo->type) &&
363 (addr->u.a4.addr == todo->u.a4.addr) &&
364 (addr->u.a4.mask == todo->u.a4.mask)) {
365 found = 1;
366 break;
367 }
368 if ((addr->proto == QETH_PROT_IPV6) &&
369 (todo->proto == QETH_PROT_IPV6) &&
370 (addr->type == todo->type) &&
371 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
372 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
373 sizeof(struct in6_addr)) == 0)) {
374 found = 1;
375 break;
376 }
377 }
378 if (found) {
379 addr->users += todo->users;
380 if (addr->users <= 0) {
381 *__addr = addr;
382 return -1;
383 } else {
384 /* for VIPA and RXIP limit refcount to 1 */
385 if (addr->type != QETH_IP_TYPE_NORMAL)
386 addr->users = 1;
387 return 0;
388 }
389 }
390 if (todo->users > 0) {
391 /* for VIPA and RXIP limit refcount to 1 */
392 if (todo->type != QETH_IP_TYPE_NORMAL)
393 todo->users = 1;
394 return 1;
395 } else
396 return 0;
397}
398
399static void __qeth_l3_delete_all_mc(struct qeth_card *card,
400 unsigned long *flags)
401{
402 struct list_head fail_list;
403 struct qeth_ipaddr *addr, *tmp;
404 int rc;
405
406 INIT_LIST_HEAD(&fail_list);
407again:
408 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
409 if (addr->is_multicast) {
410 list_del(&addr->entry);
411 spin_unlock_irqrestore(&card->ip_lock, *flags);
412 rc = qeth_l3_deregister_addr_entry(card, addr);
413 spin_lock_irqsave(&card->ip_lock, *flags);
414 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
415 kfree(addr);
416 else
417 list_add_tail(&addr->entry, &fail_list);
418 goto again;
419 }
420 }
421 list_splice(&fail_list, &card->ip_list);
422}
423
424static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
425{
426 struct list_head *tbd_list;
427 struct qeth_ipaddr *todo, *addr;
428 unsigned long flags;
429 int rc;
430
431 QETH_CARD_TEXT(card, 2, "sdiplist");
432 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
433
434 if ((card->state != CARD_STATE_UP &&
435 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
436 return;
437 }
438
439 spin_lock_irqsave(&card->ip_lock, flags);
440 tbd_list = card->ip_tbd_list;
441 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
442 if (!card->ip_tbd_list) {
443 QETH_CARD_TEXT(card, 0, "silnomem");
444 card->ip_tbd_list = tbd_list;
445 spin_unlock_irqrestore(&card->ip_lock, flags);
446 return;
447 } else
448 INIT_LIST_HEAD(card->ip_tbd_list);
449
450 while (!list_empty(tbd_list)) {
451 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
452 list_del(&todo->entry);
453 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
454 __qeth_l3_delete_all_mc(card, &flags);
455 kfree(todo);
456 continue;
457 }
458 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
459 if (rc == 0) {
460 /* nothing to be done; only adjusted refcount */
461 kfree(todo);
462 } else if (rc == 1) {
463 /* new entry to be added to on-card list */
464 spin_unlock_irqrestore(&card->ip_lock, flags);
465 rc = qeth_l3_register_addr_entry(card, todo);
466 spin_lock_irqsave(&card->ip_lock, flags);
467 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
468 list_add_tail(&todo->entry, &card->ip_list);
469 else
470 kfree(todo);
471 } else if (rc == -1) {
472 /* on-card entry to be removed */
473 list_del_init(&addr->entry);
474 spin_unlock_irqrestore(&card->ip_lock, flags);
475 rc = qeth_l3_deregister_addr_entry(card, addr);
476 spin_lock_irqsave(&card->ip_lock, flags);
477 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
478 kfree(addr);
479 else
480 list_add_tail(&addr->entry, &card->ip_list);
481 kfree(todo);
482 }
483 }
484 spin_unlock_irqrestore(&card->ip_lock, flags);
485 kfree(tbd_list);
486}
487
488static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
489{
490 struct qeth_ipaddr *addr, *tmp;
491 unsigned long flags;
492
493 QETH_CARD_TEXT(card, 4, "clearip");
494 if (recover && card->options.sniffer)
495 return;
496 spin_lock_irqsave(&card->ip_lock, flags);
497 /* clear todo list */
498 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
499 list_del(&addr->entry);
500 kfree(addr);
501 }
502
503 while (!list_empty(&card->ip_list)) {
504 addr = list_entry(card->ip_list.next,
505 struct qeth_ipaddr, entry);
506 list_del_init(&addr->entry);
507 if (!recover || addr->is_multicast) {
508 kfree(addr);
509 continue;
510 }
511 list_add_tail(&addr->entry, card->ip_tbd_list);
512 }
513 spin_unlock_irqrestore(&card->ip_lock, flags);
514}
515
516static int qeth_l3_address_exists_in_list(struct list_head *list,
517 struct qeth_ipaddr *addr, int same_type)
518{
519 struct qeth_ipaddr *tmp;
520
521 list_for_each_entry(tmp, list, entry) {
522 if ((tmp->proto == QETH_PROT_IPV4) &&
523 (addr->proto == QETH_PROT_IPV4) &&
524 ((same_type && (tmp->type == addr->type)) ||
525 (!same_type && (tmp->type != addr->type))) &&
526 (tmp->u.a4.addr == addr->u.a4.addr))
527 return 1;
528
529 if ((tmp->proto == QETH_PROT_IPV6) &&
530 (addr->proto == QETH_PROT_IPV6) &&
531 ((same_type && (tmp->type == addr->type)) ||
532 (!same_type && (tmp->type != addr->type))) &&
533 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
534 sizeof(struct in6_addr)) == 0))
535 return 1;
536
537 }
538 return 0;
539}
540
541static int qeth_l3_send_setdelmc(struct qeth_card *card,
542 struct qeth_ipaddr *addr, int ipacmd)
543{
544 int rc;
545 struct qeth_cmd_buffer *iob;
546 struct qeth_ipa_cmd *cmd;
547
548 QETH_CARD_TEXT(card, 4, "setdelmc");
549
550 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
551 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
552 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
553 if (addr->proto == QETH_PROT_IPV6)
554 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
555 sizeof(struct in6_addr));
556 else
557 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
558
559 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
560
561 return rc;
562}
563
564static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
565{
566 int i, j;
567 for (i = 0; i < 16; i++) {
568 j = (len) - (i * 8);
569 if (j >= 8)
570 netmask[i] = 0xff;
571 else if (j > 0)
572 netmask[i] = (u8)(0xFF00 >> j);
573 else
574 netmask[i] = 0;
575 }
576}
577
578static int qeth_l3_send_setdelip(struct qeth_card *card,
579 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
580{
581 int rc;
582 struct qeth_cmd_buffer *iob;
583 struct qeth_ipa_cmd *cmd;
584 __u8 netmask[16];
585
586 QETH_CARD_TEXT(card, 4, "setdelip");
587 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
588
589 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
590 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
591 if (addr->proto == QETH_PROT_IPV6) {
592 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
593 sizeof(struct in6_addr));
594 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
595 memcpy(cmd->data.setdelip6.mask, netmask,
596 sizeof(struct in6_addr));
597 cmd->data.setdelip6.flags = flags;
598 } else {
599 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
600 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
601 cmd->data.setdelip4.flags = flags;
602 }
603
604 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
605
606 return rc;
607}
608
609static int qeth_l3_send_setrouting(struct qeth_card *card,
610 enum qeth_routing_types type, enum qeth_prot_versions prot)
611{
612 int rc;
613 struct qeth_ipa_cmd *cmd;
614 struct qeth_cmd_buffer *iob;
615
616 QETH_CARD_TEXT(card, 4, "setroutg");
617 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
618 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
619 cmd->data.setrtg.type = (type);
620 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
621
622 return rc;
623}
624
625static void qeth_l3_correct_routing_type(struct qeth_card *card,
626 enum qeth_routing_types *type, enum qeth_prot_versions prot)
627{
628 if (card->info.type == QETH_CARD_TYPE_IQD) {
629 switch (*type) {
630 case NO_ROUTER:
631 case PRIMARY_CONNECTOR:
632 case SECONDARY_CONNECTOR:
633 case MULTICAST_ROUTER:
634 return;
635 default:
636 goto out_inval;
637 }
638 } else {
639 switch (*type) {
640 case NO_ROUTER:
641 case PRIMARY_ROUTER:
642 case SECONDARY_ROUTER:
643 return;
644 case MULTICAST_ROUTER:
645 if (qeth_is_ipafunc_supported(card, prot,
646 IPA_OSA_MC_ROUTER))
647 return;
648 default:
649 goto out_inval;
650 }
651 }
652out_inval:
653 *type = NO_ROUTER;
654}
655
656int qeth_l3_setrouting_v4(struct qeth_card *card)
657{
658 int rc;
659
660 QETH_CARD_TEXT(card, 3, "setrtg4");
661
662 qeth_l3_correct_routing_type(card, &card->options.route4.type,
663 QETH_PROT_IPV4);
664
665 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
666 QETH_PROT_IPV4);
667 if (rc) {
668 card->options.route4.type = NO_ROUTER;
669 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
670 " on %s. Type set to 'no router'.\n", rc,
671 QETH_CARD_IFNAME(card));
672 }
673 return rc;
674}
675
676int qeth_l3_setrouting_v6(struct qeth_card *card)
677{
678 int rc = 0;
679
680 QETH_CARD_TEXT(card, 3, "setrtg6");
681#ifdef CONFIG_QETH_IPV6
682
683 if (!qeth_is_supported(card, IPA_IPV6))
684 return 0;
685 qeth_l3_correct_routing_type(card, &card->options.route6.type,
686 QETH_PROT_IPV6);
687
688 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
689 QETH_PROT_IPV6);
690 if (rc) {
691 card->options.route6.type = NO_ROUTER;
692 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
693 " on %s. Type set to 'no router'.\n", rc,
694 QETH_CARD_IFNAME(card));
695 }
696#endif
697 return rc;
698}
699
700/*
701 * IP address takeover related functions
702 */
703static void qeth_l3_clear_ipato_list(struct qeth_card *card)
704{
705
706 struct qeth_ipato_entry *ipatoe, *tmp;
707 unsigned long flags;
708
709 spin_lock_irqsave(&card->ip_lock, flags);
710 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
711 list_del(&ipatoe->entry);
712 kfree(ipatoe);
713 }
714 spin_unlock_irqrestore(&card->ip_lock, flags);
715}
716
717int qeth_l3_add_ipato_entry(struct qeth_card *card,
718 struct qeth_ipato_entry *new)
719{
720 struct qeth_ipato_entry *ipatoe;
721 unsigned long flags;
722 int rc = 0;
723
724 QETH_CARD_TEXT(card, 2, "addipato");
725 spin_lock_irqsave(&card->ip_lock, flags);
726 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
727 if (ipatoe->proto != new->proto)
728 continue;
729 if (!memcmp(ipatoe->addr, new->addr,
730 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
731 (ipatoe->mask_bits == new->mask_bits)) {
732 rc = -EEXIST;
733 break;
734 }
735 }
736 if (!rc)
737 list_add_tail(&new->entry, &card->ipato.entries);
738
739 spin_unlock_irqrestore(&card->ip_lock, flags);
740 return rc;
741}
742
743void qeth_l3_del_ipato_entry(struct qeth_card *card,
744 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
745{
746 struct qeth_ipato_entry *ipatoe, *tmp;
747 unsigned long flags;
748
749 QETH_CARD_TEXT(card, 2, "delipato");
750 spin_lock_irqsave(&card->ip_lock, flags);
751 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
752 if (ipatoe->proto != proto)
753 continue;
754 if (!memcmp(ipatoe->addr, addr,
755 (proto == QETH_PROT_IPV4)? 4:16) &&
756 (ipatoe->mask_bits == mask_bits)) {
757 list_del(&ipatoe->entry);
758 kfree(ipatoe);
759 }
760 }
761 spin_unlock_irqrestore(&card->ip_lock, flags);
762}
763
764/*
765 * VIPA related functions
766 */
767int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
768 const u8 *addr)
769{
770 struct qeth_ipaddr *ipaddr;
771 unsigned long flags;
772 int rc = 0;
773
774 ipaddr = qeth_l3_get_addr_buffer(proto);
775 if (ipaddr) {
776 if (proto == QETH_PROT_IPV4) {
777 QETH_CARD_TEXT(card, 2, "addvipa4");
778 memcpy(&ipaddr->u.a4.addr, addr, 4);
779 ipaddr->u.a4.mask = 0;
780 } else if (proto == QETH_PROT_IPV6) {
781 QETH_CARD_TEXT(card, 2, "addvipa6");
782 memcpy(&ipaddr->u.a6.addr, addr, 16);
783 ipaddr->u.a6.pfxlen = 0;
784 }
785 ipaddr->type = QETH_IP_TYPE_VIPA;
786 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
787 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
788 } else
789 return -ENOMEM;
790 spin_lock_irqsave(&card->ip_lock, flags);
791 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
792 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
793 rc = -EEXIST;
794 spin_unlock_irqrestore(&card->ip_lock, flags);
795 if (rc) {
796 return rc;
797 }
798 if (!qeth_l3_add_ip(card, ipaddr))
799 kfree(ipaddr);
800 qeth_l3_set_ip_addr_list(card);
801 return rc;
802}
803
804void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
805 const u8 *addr)
806{
807 struct qeth_ipaddr *ipaddr;
808
809 ipaddr = qeth_l3_get_addr_buffer(proto);
810 if (ipaddr) {
811 if (proto == QETH_PROT_IPV4) {
812 QETH_CARD_TEXT(card, 2, "delvipa4");
813 memcpy(&ipaddr->u.a4.addr, addr, 4);
814 ipaddr->u.a4.mask = 0;
815 } else if (proto == QETH_PROT_IPV6) {
816 QETH_CARD_TEXT(card, 2, "delvipa6");
817 memcpy(&ipaddr->u.a6.addr, addr, 16);
818 ipaddr->u.a6.pfxlen = 0;
819 }
820 ipaddr->type = QETH_IP_TYPE_VIPA;
821 } else
822 return;
823 if (!qeth_l3_delete_ip(card, ipaddr))
824 kfree(ipaddr);
825 qeth_l3_set_ip_addr_list(card);
826}
827
828/*
829 * proxy ARP related functions
830 */
831int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
832 const u8 *addr)
833{
834 struct qeth_ipaddr *ipaddr;
835 unsigned long flags;
836 int rc = 0;
837
838 ipaddr = qeth_l3_get_addr_buffer(proto);
839 if (ipaddr) {
840 if (proto == QETH_PROT_IPV4) {
841 QETH_CARD_TEXT(card, 2, "addrxip4");
842 memcpy(&ipaddr->u.a4.addr, addr, 4);
843 ipaddr->u.a4.mask = 0;
844 } else if (proto == QETH_PROT_IPV6) {
845 QETH_CARD_TEXT(card, 2, "addrxip6");
846 memcpy(&ipaddr->u.a6.addr, addr, 16);
847 ipaddr->u.a6.pfxlen = 0;
848 }
849 ipaddr->type = QETH_IP_TYPE_RXIP;
850 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
851 ipaddr->del_flags = 0;
852 } else
853 return -ENOMEM;
854 spin_lock_irqsave(&card->ip_lock, flags);
855 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
856 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
857 rc = -EEXIST;
858 spin_unlock_irqrestore(&card->ip_lock, flags);
859 if (rc) {
860 return rc;
861 }
862 if (!qeth_l3_add_ip(card, ipaddr))
863 kfree(ipaddr);
864 qeth_l3_set_ip_addr_list(card);
865 return 0;
866}
867
868void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
869 const u8 *addr)
870{
871 struct qeth_ipaddr *ipaddr;
872
873 ipaddr = qeth_l3_get_addr_buffer(proto);
874 if (ipaddr) {
875 if (proto == QETH_PROT_IPV4) {
876 QETH_CARD_TEXT(card, 2, "addrxip4");
877 memcpy(&ipaddr->u.a4.addr, addr, 4);
878 ipaddr->u.a4.mask = 0;
879 } else if (proto == QETH_PROT_IPV6) {
880 QETH_CARD_TEXT(card, 2, "addrxip6");
881 memcpy(&ipaddr->u.a6.addr, addr, 16);
882 ipaddr->u.a6.pfxlen = 0;
883 }
884 ipaddr->type = QETH_IP_TYPE_RXIP;
885 } else
886 return;
887 if (!qeth_l3_delete_ip(card, ipaddr))
888 kfree(ipaddr);
889 qeth_l3_set_ip_addr_list(card);
890}
891
892static int qeth_l3_register_addr_entry(struct qeth_card *card,
893 struct qeth_ipaddr *addr)
894{
895 char buf[50];
896 int rc = 0;
897 int cnt = 3;
898
899 if (addr->proto == QETH_PROT_IPV4) {
900 QETH_CARD_TEXT(card, 2, "setaddr4");
901 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
902 } else if (addr->proto == QETH_PROT_IPV6) {
903 QETH_CARD_TEXT(card, 2, "setaddr6");
904 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
905 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
906 } else {
907 QETH_CARD_TEXT(card, 2, "setaddr?");
908 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
909 }
910 do {
911 if (addr->is_multicast)
912 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
913 else
914 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
915 addr->set_flags);
916 if (rc)
917 QETH_CARD_TEXT(card, 2, "failed");
918 } while ((--cnt > 0) && rc);
919 if (rc) {
920 QETH_CARD_TEXT(card, 2, "FAILED");
921 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
922 dev_warn(&card->gdev->dev,
923 "Registering IP address %s failed\n", buf);
924 }
925 return rc;
926}
927
928static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
929 struct qeth_ipaddr *addr)
930{
931 int rc = 0;
932
933 if (addr->proto == QETH_PROT_IPV4) {
934 QETH_CARD_TEXT(card, 2, "deladdr4");
935 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
936 } else if (addr->proto == QETH_PROT_IPV6) {
937 QETH_CARD_TEXT(card, 2, "deladdr6");
938 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
939 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
940 } else {
941 QETH_CARD_TEXT(card, 2, "deladdr?");
942 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
943 }
944 if (addr->is_multicast)
945 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
946 else
947 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
948 addr->del_flags);
949 if (rc)
950 QETH_CARD_TEXT(card, 2, "failed");
951
952 return rc;
953}
954
955static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
956{
957 if (cast_type == RTN_MULTICAST)
958 return QETH_CAST_MULTICAST;
959 if (cast_type == RTN_BROADCAST)
960 return QETH_CAST_BROADCAST;
961 return QETH_CAST_UNICAST;
962}
963
964static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
965{
966 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
967 if (cast_type == RTN_MULTICAST)
968 return ct | QETH_CAST_MULTICAST;
969 if (cast_type == RTN_ANYCAST)
970 return ct | QETH_CAST_ANYCAST;
971 if (cast_type == RTN_BROADCAST)
972 return ct | QETH_CAST_BROADCAST;
973 return ct | QETH_CAST_UNICAST;
974}
975
976static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
977 __u32 mode)
978{
979 int rc;
980 struct qeth_cmd_buffer *iob;
981 struct qeth_ipa_cmd *cmd;
982
983 QETH_CARD_TEXT(card, 4, "adpmode");
984
985 iob = qeth_get_adapter_cmd(card, command,
986 sizeof(struct qeth_ipacmd_setadpparms));
987 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
988 cmd->data.setadapterparms.data.mode = mode;
989 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
990 NULL);
991 return rc;
992}
993
994static int qeth_l3_setadapter_hstr(struct qeth_card *card)
995{
996 int rc;
997
998 QETH_CARD_TEXT(card, 4, "adphstr");
999
1000 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1001 rc = qeth_l3_send_setadp_mode(card,
1002 IPA_SETADP_SET_BROADCAST_MODE,
1003 card->options.broadcast_mode);
1004 if (rc)
1005 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1006 "device %s: x%x\n",
1007 CARD_BUS_ID(card), rc);
1008 rc = qeth_l3_send_setadp_mode(card,
1009 IPA_SETADP_ALTER_MAC_ADDRESS,
1010 card->options.macaddr_mode);
1011 if (rc)
1012 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1013 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1014 return rc;
1015 }
1016 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1017 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1018 "to set broadcast mode, using ALLRINGS "
1019 "on device %s:\n", CARD_BUS_ID(card));
1020 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1021 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1022 "to set macaddr mode, using NONCANONICAL "
1023 "on device %s:\n", CARD_BUS_ID(card));
1024 return 0;
1025}
1026
1027static int qeth_l3_setadapter_parms(struct qeth_card *card)
1028{
1029 int rc;
1030
1031 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1032
1033 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1034 dev_info(&card->gdev->dev,
1035 "set adapter parameters not supported.\n");
1036 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1037 return 0;
1038 }
1039 rc = qeth_query_setadapterparms(card);
1040 if (rc) {
1041 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1042 "0x%x\n", dev_name(&card->gdev->dev), rc);
1043 return rc;
1044 }
1045 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1046 rc = qeth_setadpparms_change_macaddr(card);
1047 if (rc)
1048 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1049 " address failed\n");
1050 }
1051
1052 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1053 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1054 rc = qeth_l3_setadapter_hstr(card);
1055
1056 return rc;
1057}
1058
1059static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1060 struct qeth_reply *reply, unsigned long data)
1061{
1062 struct qeth_ipa_cmd *cmd;
1063
1064 QETH_CARD_TEXT(card, 4, "defadpcb");
1065
1066 cmd = (struct qeth_ipa_cmd *) data;
1067 if (cmd->hdr.return_code == 0) {
1068 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1069 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1070 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1071 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1072 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1073 }
1074 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1075 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1076 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1077 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1078 }
1079 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1080 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1081 card->info.tx_csum_mask =
1082 cmd->data.setassparms.data.flags_32bit;
1083 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1084 }
1085
1086 return 0;
1087}
1088
1089static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1090 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1091 __u16 len, enum qeth_prot_versions prot)
1092{
1093 struct qeth_cmd_buffer *iob;
1094 struct qeth_ipa_cmd *cmd;
1095
1096 QETH_CARD_TEXT(card, 4, "getasscm");
1097 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1098
1099 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1100 cmd->data.setassparms.hdr.assist_no = ipa_func;
1101 cmd->data.setassparms.hdr.length = 8 + len;
1102 cmd->data.setassparms.hdr.command_code = cmd_code;
1103 cmd->data.setassparms.hdr.return_code = 0;
1104 cmd->data.setassparms.hdr.seq_no = 0;
1105
1106 return iob;
1107}
1108
1109static int qeth_l3_send_setassparms(struct qeth_card *card,
1110 struct qeth_cmd_buffer *iob, __u16 len, long data,
1111 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1112 unsigned long),
1113 void *reply_param)
1114{
1115 int rc;
1116 struct qeth_ipa_cmd *cmd;
1117
1118 QETH_CARD_TEXT(card, 4, "sendassp");
1119
1120 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1121 if (len <= sizeof(__u32))
1122 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1123 else /* (len > sizeof(__u32)) */
1124 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1125
1126 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1127 return rc;
1128}
1129
1130#ifdef CONFIG_QETH_IPV6
1131static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1132 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1133{
1134 int rc;
1135 struct qeth_cmd_buffer *iob;
1136
1137 QETH_CARD_TEXT(card, 4, "simassp6");
1138 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1139 0, QETH_PROT_IPV6);
1140 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1141 qeth_l3_default_setassparms_cb, NULL);
1142 return rc;
1143}
1144#endif
1145
1146static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1147 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1148{
1149 int rc;
1150 int length = 0;
1151 struct qeth_cmd_buffer *iob;
1152
1153 QETH_CARD_TEXT(card, 4, "simassp4");
1154 if (data)
1155 length = sizeof(__u32);
1156 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1157 length, QETH_PROT_IPV4);
1158 rc = qeth_l3_send_setassparms(card, iob, length, data,
1159 qeth_l3_default_setassparms_cb, NULL);
1160 return rc;
1161}
1162
1163static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1164{
1165 int rc;
1166
1167 QETH_CARD_TEXT(card, 3, "ipaarp");
1168
1169 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1170 dev_info(&card->gdev->dev,
1171 "ARP processing not supported on %s!\n",
1172 QETH_CARD_IFNAME(card));
1173 return 0;
1174 }
1175 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1176 IPA_CMD_ASS_START, 0);
1177 if (rc) {
1178 dev_warn(&card->gdev->dev,
1179 "Starting ARP processing support for %s failed\n",
1180 QETH_CARD_IFNAME(card));
1181 }
1182 return rc;
1183}
1184
1185static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1186{
1187 int rc;
1188
1189 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1190
1191 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1192 dev_info(&card->gdev->dev,
1193 "Hardware IP fragmentation not supported on %s\n",
1194 QETH_CARD_IFNAME(card));
1195 return -EOPNOTSUPP;
1196 }
1197
1198 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1199 IPA_CMD_ASS_START, 0);
1200 if (rc) {
1201 dev_warn(&card->gdev->dev,
1202 "Starting IP fragmentation support for %s failed\n",
1203 QETH_CARD_IFNAME(card));
1204 } else
1205 dev_info(&card->gdev->dev,
1206 "Hardware IP fragmentation enabled \n");
1207 return rc;
1208}
1209
1210static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1211{
1212 int rc;
1213
1214 QETH_CARD_TEXT(card, 3, "stsrcmac");
1215
1216 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1217 dev_info(&card->gdev->dev,
1218 "Inbound source MAC-address not supported on %s\n",
1219 QETH_CARD_IFNAME(card));
1220 return -EOPNOTSUPP;
1221 }
1222
1223 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1224 IPA_CMD_ASS_START, 0);
1225 if (rc)
1226 dev_warn(&card->gdev->dev,
1227 "Starting source MAC-address support for %s failed\n",
1228 QETH_CARD_IFNAME(card));
1229 return rc;
1230}
1231
1232static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1233{
1234 int rc = 0;
1235
1236 QETH_CARD_TEXT(card, 3, "strtvlan");
1237
1238 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1239 dev_info(&card->gdev->dev,
1240 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1241 return -EOPNOTSUPP;
1242 }
1243
1244 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1245 IPA_CMD_ASS_START, 0);
1246 if (rc) {
1247 dev_warn(&card->gdev->dev,
1248 "Starting VLAN support for %s failed\n",
1249 QETH_CARD_IFNAME(card));
1250 } else {
1251 dev_info(&card->gdev->dev, "VLAN enabled\n");
1252 }
1253 return rc;
1254}
1255
1256static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1257{
1258 int rc;
1259
1260 QETH_CARD_TEXT(card, 3, "stmcast");
1261
1262 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1263 dev_info(&card->gdev->dev,
1264 "Multicast not supported on %s\n",
1265 QETH_CARD_IFNAME(card));
1266 return -EOPNOTSUPP;
1267 }
1268
1269 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1270 IPA_CMD_ASS_START, 0);
1271 if (rc) {
1272 dev_warn(&card->gdev->dev,
1273 "Starting multicast support for %s failed\n",
1274 QETH_CARD_IFNAME(card));
1275 } else {
1276 dev_info(&card->gdev->dev, "Multicast enabled\n");
1277 card->dev->flags |= IFF_MULTICAST;
1278 }
1279 return rc;
1280}
1281
1282#ifdef CONFIG_QETH_IPV6
1283static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1284{
1285 int rc;
1286
1287 QETH_CARD_TEXT(card, 3, "softipv6");
1288
1289 if (card->info.type == QETH_CARD_TYPE_IQD)
1290 goto out;
1291
1292 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1293 if (rc) {
1294 dev_err(&card->gdev->dev,
1295 "Activating IPv6 support for %s failed\n",
1296 QETH_CARD_IFNAME(card));
1297 return rc;
1298 }
1299 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1300 IPA_CMD_ASS_START, 3);
1301 if (rc) {
1302 dev_err(&card->gdev->dev,
1303 "Activating IPv6 support for %s failed\n",
1304 QETH_CARD_IFNAME(card));
1305 return rc;
1306 }
1307 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1308 IPA_CMD_ASS_START);
1309 if (rc) {
1310 dev_err(&card->gdev->dev,
1311 "Activating IPv6 support for %s failed\n",
1312 QETH_CARD_IFNAME(card));
1313 return rc;
1314 }
1315 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1316 IPA_CMD_ASS_START);
1317 if (rc) {
1318 dev_warn(&card->gdev->dev,
1319 "Enabling the passthrough mode for %s failed\n",
1320 QETH_CARD_IFNAME(card));
1321 return rc;
1322 }
1323out:
1324 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1325 return 0;
1326}
1327#endif
1328
1329static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1330{
1331 int rc = 0;
1332
1333 QETH_CARD_TEXT(card, 3, "strtipv6");
1334
1335 if (!qeth_is_supported(card, IPA_IPV6)) {
1336 dev_info(&card->gdev->dev,
1337 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1338 return 0;
1339 }
1340#ifdef CONFIG_QETH_IPV6
1341 rc = qeth_l3_softsetup_ipv6(card);
1342#endif
1343 return rc ;
1344}
1345
1346static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1347{
1348 int rc;
1349
1350 QETH_CARD_TEXT(card, 3, "stbrdcst");
1351 card->info.broadcast_capable = 0;
1352 if (!qeth_is_supported(card, IPA_FILTERING)) {
1353 dev_info(&card->gdev->dev,
1354 "Broadcast not supported on %s\n",
1355 QETH_CARD_IFNAME(card));
1356 rc = -EOPNOTSUPP;
1357 goto out;
1358 }
1359 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1360 IPA_CMD_ASS_START, 0);
1361 if (rc) {
1362 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1363 "%s failed\n", QETH_CARD_IFNAME(card));
1364 goto out;
1365 }
1366
1367 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1368 IPA_CMD_ASS_CONFIGURE, 1);
1369 if (rc) {
1370 dev_warn(&card->gdev->dev,
1371 "Setting up broadcast filtering for %s failed\n",
1372 QETH_CARD_IFNAME(card));
1373 goto out;
1374 }
1375 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1376 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1377 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1378 IPA_CMD_ASS_ENABLE, 1);
1379 if (rc) {
1380 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1381 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1382 goto out;
1383 }
1384 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1385out:
1386 if (card->info.broadcast_capable)
1387 card->dev->flags |= IFF_BROADCAST;
1388 else
1389 card->dev->flags &= ~IFF_BROADCAST;
1390 return rc;
1391}
1392
1393static int qeth_l3_send_checksum_command(struct qeth_card *card)
1394{
1395 int rc;
1396
1397 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1398 IPA_CMD_ASS_START, 0);
1399 if (rc) {
1400 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1401 "failed, using SW checksumming\n",
1402 QETH_CARD_IFNAME(card));
1403 return rc;
1404 }
1405 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1406 IPA_CMD_ASS_ENABLE,
1407 card->info.csum_mask);
1408 if (rc) {
1409 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1410 "failed, using SW checksumming\n",
1411 QETH_CARD_IFNAME(card));
1412 return rc;
1413 }
1414 return 0;
1415}
1416
1417int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1418{
1419 int rc = 0;
1420
1421 if (on) {
1422 rc = qeth_l3_send_checksum_command(card);
1423 if (rc)
1424 return -EIO;
1425 dev_info(&card->gdev->dev,
1426 "HW Checksumming (inbound) enabled\n");
1427 } else {
1428 rc = qeth_l3_send_simple_setassparms(card,
1429 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1430 if (rc)
1431 return -EIO;
1432 }
1433
1434 return 0;
1435}
1436
1437static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1438{
1439 QETH_CARD_TEXT(card, 3, "strtcsum");
1440
1441 if (card->dev->features & NETIF_F_RXCSUM) {
1442 rtnl_lock();
1443 /* force set_features call */
1444 card->dev->features &= ~NETIF_F_RXCSUM;
1445 netdev_update_features(card->dev);
1446 rtnl_unlock();
1447 }
1448 return 0;
1449}
1450
1451static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1452{
1453 int rc = 0;
1454
1455 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1456 return rc;
1457 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1458 IPA_CMD_ASS_START, 0);
1459 if (rc)
1460 goto err_out;
1461 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1462 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1463 if (rc)
1464 goto err_out;
1465 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1466 return rc;
1467err_out:
1468 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1469 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1470 return rc;
1471}
1472
1473static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1474{
1475 int rc;
1476
1477 QETH_CARD_TEXT(card, 3, "sttso");
1478
1479 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1480 dev_info(&card->gdev->dev,
1481 "Outbound TSO not supported on %s\n",
1482 QETH_CARD_IFNAME(card));
1483 rc = -EOPNOTSUPP;
1484 } else {
1485 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1486 IPA_CMD_ASS_START, 0);
1487 if (rc)
1488 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1489 "segmentation offload for %s failed\n",
1490 QETH_CARD_IFNAME(card));
1491 else
1492 dev_info(&card->gdev->dev,
1493 "Outbound TSO enabled\n");
1494 }
1495 if (rc)
1496 card->dev->features &= ~NETIF_F_TSO;
1497 return rc;
1498}
1499
1500static int qeth_l3_start_ipassists(struct qeth_card *card)
1501{
1502 QETH_CARD_TEXT(card, 3, "strtipas");
1503
1504 qeth_set_access_ctrl_online(card); /* go on*/
1505 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1506 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1507 qeth_l3_start_ipa_source_mac(card); /* go on*/
1508 qeth_l3_start_ipa_vlan(card); /* go on*/
1509 qeth_l3_start_ipa_multicast(card); /* go on*/
1510 qeth_l3_start_ipa_ipv6(card); /* go on*/
1511 qeth_l3_start_ipa_broadcast(card); /* go on*/
1512 qeth_l3_start_ipa_checksum(card); /* go on*/
1513 qeth_l3_start_ipa_tx_checksum(card);
1514 qeth_l3_start_ipa_tso(card); /* go on*/
1515 return 0;
1516}
1517
1518static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1519 struct qeth_reply *reply, unsigned long data)
1520{
1521 struct qeth_ipa_cmd *cmd;
1522
1523 cmd = (struct qeth_ipa_cmd *) data;
1524 if (cmd->hdr.return_code == 0)
1525 memcpy(card->dev->dev_addr,
1526 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1527 else
1528 random_ether_addr(card->dev->dev_addr);
1529
1530 return 0;
1531}
1532
1533static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1534{
1535 int rc = 0;
1536 struct qeth_cmd_buffer *iob;
1537 struct qeth_ipa_cmd *cmd;
1538
1539 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1540
1541 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1542 QETH_PROT_IPV6);
1543 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1544 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1545 card->info.unique_id;
1546
1547 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1548 NULL);
1549 return rc;
1550}
1551
1552static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1553 struct qeth_reply *reply, unsigned long data)
1554{
1555 struct qeth_ipa_cmd *cmd;
1556
1557 cmd = (struct qeth_ipa_cmd *) data;
1558 if (cmd->hdr.return_code == 0)
1559 card->info.unique_id = *((__u16 *)
1560 &cmd->data.create_destroy_addr.unique_id[6]);
1561 else {
1562 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1563 UNIQUE_ID_NOT_BY_CARD;
1564 dev_warn(&card->gdev->dev, "The network adapter failed to "
1565 "generate a unique ID\n");
1566 }
1567 return 0;
1568}
1569
1570static int qeth_l3_get_unique_id(struct qeth_card *card)
1571{
1572 int rc = 0;
1573 struct qeth_cmd_buffer *iob;
1574 struct qeth_ipa_cmd *cmd;
1575
1576 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1577
1578 if (!qeth_is_supported(card, IPA_IPV6)) {
1579 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1580 UNIQUE_ID_NOT_BY_CARD;
1581 return 0;
1582 }
1583
1584 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1585 QETH_PROT_IPV6);
1586 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1587 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1588 card->info.unique_id;
1589
1590 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1591 return rc;
1592}
1593
1594static int
1595qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1596 unsigned long data)
1597{
1598 struct qeth_ipa_cmd *cmd;
1599 __u16 rc;
1600
1601 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1602
1603 cmd = (struct qeth_ipa_cmd *)data;
1604 rc = cmd->hdr.return_code;
1605 if (rc)
1606 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1607 switch (cmd->data.diagass.action) {
1608 case QETH_DIAGS_CMD_TRACE_QUERY:
1609 break;
1610 case QETH_DIAGS_CMD_TRACE_DISABLE:
1611 switch (rc) {
1612 case 0:
1613 case IPA_RC_INVALID_SUBCMD:
1614 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1615 dev_info(&card->gdev->dev, "The HiperSockets network "
1616 "traffic analyzer is deactivated\n");
1617 break;
1618 default:
1619 break;
1620 }
1621 break;
1622 case QETH_DIAGS_CMD_TRACE_ENABLE:
1623 switch (rc) {
1624 case 0:
1625 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1626 dev_info(&card->gdev->dev, "The HiperSockets network "
1627 "traffic analyzer is activated\n");
1628 break;
1629 case IPA_RC_HARDWARE_AUTH_ERROR:
1630 dev_warn(&card->gdev->dev, "The device is not "
1631 "authorized to run as a HiperSockets network "
1632 "traffic analyzer\n");
1633 break;
1634 case IPA_RC_TRACE_ALREADY_ACTIVE:
1635 dev_warn(&card->gdev->dev, "A HiperSockets "
1636 "network traffic analyzer is already "
1637 "active in the HiperSockets LAN\n");
1638 break;
1639 default:
1640 break;
1641 }
1642 break;
1643 default:
1644 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1645 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1646 }
1647
1648 return 0;
1649}
1650
1651static int
1652qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1653{
1654 struct qeth_cmd_buffer *iob;
1655 struct qeth_ipa_cmd *cmd;
1656
1657 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1658
1659 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1660 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1661 cmd->data.diagass.subcmd_len = 16;
1662 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1663 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1664 cmd->data.diagass.action = diags_cmd;
1665 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1666}
1667
1668static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1669 struct net_device *dev)
1670{
1671 if (dev->type == ARPHRD_IEEE802_TR)
1672 ip_tr_mc_map(ipm, mac);
1673 else
1674 ip_eth_mc_map(ipm, mac);
1675}
1676
1677static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1678{
1679 struct qeth_ipaddr *ipm;
1680 struct ip_mc_list *im4;
1681 char buf[MAX_ADDR_LEN];
1682
1683 QETH_CARD_TEXT(card, 4, "addmc");
1684 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1685 im4 = rcu_dereference(im4->next_rcu)) {
1686 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1687 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1688 if (!ipm)
1689 continue;
1690 ipm->u.a4.addr = im4->multiaddr;
1691 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1692 ipm->is_multicast = 1;
1693 if (!qeth_l3_add_ip(card, ipm))
1694 kfree(ipm);
1695 }
1696}
1697
1698static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1699{
1700 struct in_device *in_dev;
1701 u16 vid;
1702
1703 QETH_CARD_TEXT(card, 4, "addmcvl");
1704 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1705 return;
1706
1707 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1708 struct net_device *netdev;
1709
1710 rcu_read_lock();
1711 netdev = __vlan_find_dev_deep(card->dev, vid);
1712 rcu_read_unlock();
1713 if (netdev == NULL ||
1714 !(netdev->flags & IFF_UP))
1715 continue;
1716 in_dev = in_dev_get(netdev);
1717 if (!in_dev)
1718 continue;
1719 rcu_read_lock();
1720 qeth_l3_add_mc(card, in_dev);
1721 rcu_read_unlock();
1722 in_dev_put(in_dev);
1723 }
1724}
1725
1726static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1727{
1728 struct in_device *in4_dev;
1729
1730 QETH_CARD_TEXT(card, 4, "chkmcv4");
1731 in4_dev = in_dev_get(card->dev);
1732 if (in4_dev == NULL)
1733 return;
1734 rcu_read_lock();
1735 qeth_l3_add_mc(card, in4_dev);
1736 qeth_l3_add_vlan_mc(card);
1737 rcu_read_unlock();
1738 in_dev_put(in4_dev);
1739}
1740
1741#ifdef CONFIG_QETH_IPV6
1742static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1743{
1744 struct qeth_ipaddr *ipm;
1745 struct ifmcaddr6 *im6;
1746 char buf[MAX_ADDR_LEN];
1747
1748 QETH_CARD_TEXT(card, 4, "addmc6");
1749 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1750 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1751 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1752 if (!ipm)
1753 continue;
1754 ipm->is_multicast = 1;
1755 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1756 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1757 sizeof(struct in6_addr));
1758 if (!qeth_l3_add_ip(card, ipm))
1759 kfree(ipm);
1760 }
1761}
1762
1763static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1764{
1765 struct inet6_dev *in_dev;
1766 u16 vid;
1767
1768 QETH_CARD_TEXT(card, 4, "admc6vl");
1769 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1770 return;
1771
1772 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1773 struct net_device *netdev;
1774
1775 netdev = __vlan_find_dev_deep(card->dev, vid);
1776 if (netdev == NULL ||
1777 !(netdev->flags & IFF_UP))
1778 continue;
1779 in_dev = in6_dev_get(netdev);
1780 if (!in_dev)
1781 continue;
1782 read_lock_bh(&in_dev->lock);
1783 qeth_l3_add_mc6(card, in_dev);
1784 read_unlock_bh(&in_dev->lock);
1785 in6_dev_put(in_dev);
1786 }
1787}
1788
1789static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1790{
1791 struct inet6_dev *in6_dev;
1792
1793 QETH_CARD_TEXT(card, 4, "chkmcv6");
1794 if (!qeth_is_supported(card, IPA_IPV6))
1795 return ;
1796 in6_dev = in6_dev_get(card->dev);
1797 if (in6_dev == NULL)
1798 return;
1799 read_lock_bh(&in6_dev->lock);
1800 qeth_l3_add_mc6(card, in6_dev);
1801 qeth_l3_add_vlan_mc6(card);
1802 read_unlock_bh(&in6_dev->lock);
1803 in6_dev_put(in6_dev);
1804}
1805#endif /* CONFIG_QETH_IPV6 */
1806
1807static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1808 unsigned short vid)
1809{
1810 struct in_device *in_dev;
1811 struct in_ifaddr *ifa;
1812 struct qeth_ipaddr *addr;
1813 struct net_device *netdev;
1814
1815 QETH_CARD_TEXT(card, 4, "frvaddr4");
1816
1817 netdev = __vlan_find_dev_deep(card->dev, vid);
1818 in_dev = in_dev_get(netdev);
1819 if (!in_dev)
1820 return;
1821 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1822 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1823 if (addr) {
1824 addr->u.a4.addr = ifa->ifa_address;
1825 addr->u.a4.mask = ifa->ifa_mask;
1826 addr->type = QETH_IP_TYPE_NORMAL;
1827 if (!qeth_l3_delete_ip(card, addr))
1828 kfree(addr);
1829 }
1830 }
1831 in_dev_put(in_dev);
1832}
1833
1834static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1835 unsigned short vid)
1836{
1837#ifdef CONFIG_QETH_IPV6
1838 struct inet6_dev *in6_dev;
1839 struct inet6_ifaddr *ifa;
1840 struct qeth_ipaddr *addr;
1841 struct net_device *netdev;
1842
1843 QETH_CARD_TEXT(card, 4, "frvaddr6");
1844
1845 netdev = __vlan_find_dev_deep(card->dev, vid);
1846 in6_dev = in6_dev_get(netdev);
1847 if (!in6_dev)
1848 return;
1849 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1850 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1851 if (addr) {
1852 memcpy(&addr->u.a6.addr, &ifa->addr,
1853 sizeof(struct in6_addr));
1854 addr->u.a6.pfxlen = ifa->prefix_len;
1855 addr->type = QETH_IP_TYPE_NORMAL;
1856 if (!qeth_l3_delete_ip(card, addr))
1857 kfree(addr);
1858 }
1859 }
1860 in6_dev_put(in6_dev);
1861#endif /* CONFIG_QETH_IPV6 */
1862}
1863
1864static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1865 unsigned short vid)
1866{
1867 qeth_l3_free_vlan_addresses4(card, vid);
1868 qeth_l3_free_vlan_addresses6(card, vid);
1869}
1870
1871static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1872{
1873 struct qeth_card *card = dev->ml_priv;
1874
1875 set_bit(vid, card->active_vlans);
1876 return;
1877}
1878
1879static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1880{
1881 struct qeth_card *card = dev->ml_priv;
1882 unsigned long flags;
1883
1884 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1885 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1886 QETH_CARD_TEXT(card, 3, "kidREC");
1887 return;
1888 }
1889 spin_lock_irqsave(&card->vlanlock, flags);
1890 /* unregister IP addresses of vlan device */
1891 qeth_l3_free_vlan_addresses(card, vid);
1892 clear_bit(vid, card->active_vlans);
1893 spin_unlock_irqrestore(&card->vlanlock, flags);
1894 qeth_l3_set_multicast_list(card->dev);
1895}
1896
1897static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1898 struct sk_buff *skb, struct qeth_hdr *hdr,
1899 unsigned short *vlan_id)
1900{
1901 __be16 prot;
1902 struct iphdr *ip_hdr;
1903 unsigned char tg_addr[MAX_ADDR_LEN];
1904 int is_vlan = 0;
1905
1906 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1907 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1908 ETH_P_IP);
1909 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1910 case QETH_CAST_MULTICAST:
1911 switch (prot) {
1912#ifdef CONFIG_QETH_IPV6
1913 case __constant_htons(ETH_P_IPV6):
1914 ndisc_mc_map((struct in6_addr *)
1915 skb->data + 24,
1916 tg_addr, card->dev, 0);
1917 break;
1918#endif
1919 case __constant_htons(ETH_P_IP):
1920 ip_hdr = (struct iphdr *)skb->data;
1921 (card->dev->type == ARPHRD_IEEE802_TR) ?
1922 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1923 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1924 break;
1925 default:
1926 memcpy(tg_addr, card->dev->broadcast,
1927 card->dev->addr_len);
1928 }
1929 card->stats.multicast++;
1930 skb->pkt_type = PACKET_MULTICAST;
1931 break;
1932 case QETH_CAST_BROADCAST:
1933 memcpy(tg_addr, card->dev->broadcast,
1934 card->dev->addr_len);
1935 card->stats.multicast++;
1936 skb->pkt_type = PACKET_BROADCAST;
1937 break;
1938 case QETH_CAST_UNICAST:
1939 case QETH_CAST_ANYCAST:
1940 case QETH_CAST_NOCAST:
1941 default:
1942 if (card->options.sniffer)
1943 skb->pkt_type = PACKET_OTHERHOST;
1944 else
1945 skb->pkt_type = PACKET_HOST;
1946 memcpy(tg_addr, card->dev->dev_addr,
1947 card->dev->addr_len);
1948 }
1949 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1950 card->dev->header_ops->create(skb, card->dev, prot,
1951 tg_addr, &hdr->hdr.l3.dest_addr[2],
1952 card->dev->addr_len);
1953 else
1954 card->dev->header_ops->create(skb, card->dev, prot,
1955 tg_addr, "FAKELL", card->dev->addr_len);
1956 }
1957
1958#ifdef CONFIG_TR
1959 if (card->dev->type == ARPHRD_IEEE802_TR)
1960 skb->protocol = tr_type_trans(skb, card->dev);
1961 else
1962#endif
1963 skb->protocol = eth_type_trans(skb, card->dev);
1964
1965 if (hdr->hdr.l3.ext_flags &
1966 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1967 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1968 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1969 is_vlan = 1;
1970 }
1971
1972 if (card->dev->features & NETIF_F_RXCSUM) {
1973 if ((hdr->hdr.l3.ext_flags &
1974 (QETH_HDR_EXT_CSUM_HDR_REQ |
1975 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1976 (QETH_HDR_EXT_CSUM_HDR_REQ |
1977 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1978 skb->ip_summed = CHECKSUM_UNNECESSARY;
1979 else
1980 skb->ip_summed = CHECKSUM_NONE;
1981 } else
1982 skb->ip_summed = CHECKSUM_NONE;
1983
1984 return is_vlan;
1985}
1986
1987static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1988 int budget, int *done)
1989{
1990 int work_done = 0;
1991 struct sk_buff *skb;
1992 struct qeth_hdr *hdr;
1993 __u16 vlan_tag = 0;
1994 int is_vlan;
1995 unsigned int len;
1996
1997 *done = 0;
1998 BUG_ON(!budget);
1999 while (budget) {
2000 skb = qeth_core_get_next_skb(card,
2001 card->qdio.in_q->bufs[card->rx.b_index].buffer,
2002 &card->rx.b_element, &card->rx.e_offset, &hdr);
2003 if (!skb) {
2004 *done = 1;
2005 break;
2006 }
2007 skb->dev = card->dev;
2008 switch (hdr->hdr.l3.id) {
2009 case QETH_HEADER_TYPE_LAYER3:
2010 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2011 &vlan_tag);
2012 len = skb->len;
2013 if (is_vlan && !card->options.sniffer)
2014 __vlan_hwaccel_put_tag(skb, vlan_tag);
2015 napi_gro_receive(&card->napi, skb);
2016 break;
2017 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2018 skb->pkt_type = PACKET_HOST;
2019 skb->protocol = eth_type_trans(skb, skb->dev);
2020 len = skb->len;
2021 netif_receive_skb(skb);
2022 break;
2023 default:
2024 dev_kfree_skb_any(skb);
2025 QETH_CARD_TEXT(card, 3, "inbunkno");
2026 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2027 continue;
2028 }
2029 work_done++;
2030 budget--;
2031 card->stats.rx_packets++;
2032 card->stats.rx_bytes += len;
2033 }
2034 return work_done;
2035}
2036
2037static int qeth_l3_poll(struct napi_struct *napi, int budget)
2038{
2039 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2040 int work_done = 0;
2041 struct qeth_qdio_buffer *buffer;
2042 int done;
2043 int new_budget = budget;
2044
2045 if (card->options.performance_stats) {
2046 card->perf_stats.inbound_cnt++;
2047 card->perf_stats.inbound_start_time = qeth_get_micros();
2048 }
2049
2050 while (1) {
2051 if (!card->rx.b_count) {
2052 card->rx.qdio_err = 0;
2053 card->rx.b_count = qdio_get_next_buffers(
2054 card->data.ccwdev, 0, &card->rx.b_index,
2055 &card->rx.qdio_err);
2056 if (card->rx.b_count <= 0) {
2057 card->rx.b_count = 0;
2058 break;
2059 }
2060 card->rx.b_element =
2061 &card->qdio.in_q->bufs[card->rx.b_index]
2062 .buffer->element[0];
2063 card->rx.e_offset = 0;
2064 }
2065
2066 while (card->rx.b_count) {
2067 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2068 if (!(card->rx.qdio_err &&
2069 qeth_check_qdio_errors(card, buffer->buffer,
2070 card->rx.qdio_err, "qinerr")))
2071 work_done += qeth_l3_process_inbound_buffer(
2072 card, new_budget, &done);
2073 else
2074 done = 1;
2075
2076 if (done) {
2077 if (card->options.performance_stats)
2078 card->perf_stats.bufs_rec++;
2079 qeth_put_buffer_pool_entry(card,
2080 buffer->pool_entry);
2081 qeth_queue_input_buffer(card, card->rx.b_index);
2082 card->rx.b_count--;
2083 if (card->rx.b_count) {
2084 card->rx.b_index =
2085 (card->rx.b_index + 1) %
2086 QDIO_MAX_BUFFERS_PER_Q;
2087 card->rx.b_element =
2088 &card->qdio.in_q
2089 ->bufs[card->rx.b_index]
2090 .buffer->element[0];
2091 card->rx.e_offset = 0;
2092 }
2093 }
2094
2095 if (work_done >= budget)
2096 goto out;
2097 else
2098 new_budget = budget - work_done;
2099 }
2100 }
2101
2102 napi_complete(napi);
2103 if (qdio_start_irq(card->data.ccwdev, 0))
2104 napi_schedule(&card->napi);
2105out:
2106 if (card->options.performance_stats)
2107 card->perf_stats.inbound_time += qeth_get_micros() -
2108 card->perf_stats.inbound_start_time;
2109 return work_done;
2110}
2111
2112static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2113 struct qeth_card *card)
2114{
2115 int rc = 0;
2116 u16 vid;
2117
2118 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2119 struct net_device *netdev;
2120
2121 rcu_read_lock();
2122 netdev = __vlan_find_dev_deep(dev, vid);
2123 rcu_read_unlock();
2124 if (netdev == dev) {
2125 rc = QETH_VLAN_CARD;
2126 break;
2127 }
2128 }
2129
2130 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2131 return 0;
2132
2133 return rc;
2134}
2135
2136static int qeth_l3_verify_dev(struct net_device *dev)
2137{
2138 struct qeth_card *card;
2139 unsigned long flags;
2140 int rc = 0;
2141
2142 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2143 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2144 if (card->dev == dev) {
2145 rc = QETH_REAL_CARD;
2146 break;
2147 }
2148 rc = qeth_l3_verify_vlan_dev(dev, card);
2149 if (rc)
2150 break;
2151 }
2152 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2153
2154 return rc;
2155}
2156
2157static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2158{
2159 struct qeth_card *card = NULL;
2160 int rc;
2161
2162 rc = qeth_l3_verify_dev(dev);
2163 if (rc == QETH_REAL_CARD)
2164 card = dev->ml_priv;
2165 else if (rc == QETH_VLAN_CARD)
2166 card = vlan_dev_real_dev(dev)->ml_priv;
2167 if (card && card->options.layer2)
2168 card = NULL;
2169 if (card)
2170 QETH_CARD_TEXT_(card, 4, "%d", rc);
2171 return card ;
2172}
2173
2174static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2175{
2176 int rc = 0;
2177
2178 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2179 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2180
2181 qeth_set_allowed_threads(card, 0, 1);
2182 if (card->options.sniffer &&
2183 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2184 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2185 if (card->read.state == CH_STATE_UP &&
2186 card->write.state == CH_STATE_UP &&
2187 (card->state == CARD_STATE_UP)) {
2188 if (recovery_mode)
2189 qeth_l3_stop(card->dev);
2190 else {
2191 rtnl_lock();
2192 dev_close(card->dev);
2193 rtnl_unlock();
2194 }
2195 card->state = CARD_STATE_SOFTSETUP;
2196 }
2197 if (card->state == CARD_STATE_SOFTSETUP) {
2198 qeth_l3_clear_ip_list(card, 1);
2199 qeth_clear_ipacmd_list(card);
2200 card->state = CARD_STATE_HARDSETUP;
2201 }
2202 if (card->state == CARD_STATE_HARDSETUP) {
2203 qeth_qdio_clear_card(card, 0);
2204 qeth_clear_qdio_buffers(card);
2205 qeth_clear_working_pool_list(card);
2206 card->state = CARD_STATE_DOWN;
2207 }
2208 if (card->state == CARD_STATE_DOWN) {
2209 qeth_clear_cmd_buffers(&card->read);
2210 qeth_clear_cmd_buffers(&card->write);
2211 }
2212 return rc;
2213}
2214
2215/*
2216 * test for and Switch promiscuous mode (on or off)
2217 * either for guestlan or HiperSocket Sniffer
2218 */
2219static void
2220qeth_l3_handle_promisc_mode(struct qeth_card *card)
2221{
2222 struct net_device *dev = card->dev;
2223
2224 if (((dev->flags & IFF_PROMISC) &&
2225 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2226 (!(dev->flags & IFF_PROMISC) &&
2227 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2228 return;
2229
2230 if (card->info.guestlan) { /* Guestlan trace */
2231 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2232 qeth_setadp_promisc_mode(card);
2233 } else if (card->options.sniffer && /* HiperSockets trace */
2234 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2235 if (dev->flags & IFF_PROMISC) {
2236 QETH_CARD_TEXT(card, 3, "+promisc");
2237 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2238 } else {
2239 QETH_CARD_TEXT(card, 3, "-promisc");
2240 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2241 }
2242 }
2243}
2244
2245static void qeth_l3_set_multicast_list(struct net_device *dev)
2246{
2247 struct qeth_card *card = dev->ml_priv;
2248
2249 QETH_CARD_TEXT(card, 3, "setmulti");
2250 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2251 (card->state != CARD_STATE_UP))
2252 return;
2253 if (!card->options.sniffer) {
2254 qeth_l3_delete_mc_addresses(card);
2255 qeth_l3_add_multicast_ipv4(card);
2256#ifdef CONFIG_QETH_IPV6
2257 qeth_l3_add_multicast_ipv6(card);
2258#endif
2259 qeth_l3_set_ip_addr_list(card);
2260 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2261 return;
2262 }
2263 qeth_l3_handle_promisc_mode(card);
2264}
2265
2266static const char *qeth_l3_arp_get_error_cause(int *rc)
2267{
2268 switch (*rc) {
2269 case QETH_IPA_ARP_RC_FAILED:
2270 *rc = -EIO;
2271 return "operation failed";
2272 case QETH_IPA_ARP_RC_NOTSUPP:
2273 *rc = -EOPNOTSUPP;
2274 return "operation not supported";
2275 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2276 *rc = -EINVAL;
2277 return "argument out of range";
2278 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2279 *rc = -EOPNOTSUPP;
2280 return "query operation not supported";
2281 case QETH_IPA_ARP_RC_Q_NO_DATA:
2282 *rc = -ENOENT;
2283 return "no query data available";
2284 default:
2285 return "unknown error";
2286 }
2287}
2288
2289static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2290{
2291 int tmp;
2292 int rc;
2293
2294 QETH_CARD_TEXT(card, 3, "arpstnoe");
2295
2296 /*
2297 * currently GuestLAN only supports the ARP assist function
2298 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2299 * thus we say EOPNOTSUPP for this ARP function
2300 */
2301 if (card->info.guestlan)
2302 return -EOPNOTSUPP;
2303 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2304 return -EOPNOTSUPP;
2305 }
2306 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2307 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2308 no_entries);
2309 if (rc) {
2310 tmp = rc;
2311 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2312 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2313 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2314 }
2315 return rc;
2316}
2317
2318static __u32 get_arp_entry_size(struct qeth_card *card,
2319 struct qeth_arp_query_data *qdata,
2320 struct qeth_arp_entrytype *type, __u8 strip_entries)
2321{
2322 __u32 rc;
2323 __u8 is_hsi;
2324
2325 is_hsi = qdata->reply_bits == 5;
2326 if (type->ip == QETHARP_IP_ADDR_V4) {
2327 QETH_CARD_TEXT(card, 4, "arpev4");
2328 if (strip_entries) {
2329 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2330 sizeof(struct qeth_arp_qi_entry7_short);
2331 } else {
2332 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2333 sizeof(struct qeth_arp_qi_entry7);
2334 }
2335 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2336 QETH_CARD_TEXT(card, 4, "arpev6");
2337 if (strip_entries) {
2338 rc = is_hsi ?
2339 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2340 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2341 } else {
2342 rc = is_hsi ?
2343 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2344 sizeof(struct qeth_arp_qi_entry7_ipv6);
2345 }
2346 } else {
2347 QETH_CARD_TEXT(card, 4, "arpinv");
2348 rc = 0;
2349 }
2350
2351 return rc;
2352}
2353
2354static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2355{
2356 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2357 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2358}
2359
2360static int qeth_l3_arp_query_cb(struct qeth_card *card,
2361 struct qeth_reply *reply, unsigned long data)
2362{
2363 struct qeth_ipa_cmd *cmd;
2364 struct qeth_arp_query_data *qdata;
2365 struct qeth_arp_query_info *qinfo;
2366 int i;
2367 int e;
2368 int entrybytes_done;
2369 int stripped_bytes;
2370 __u8 do_strip_entries;
2371
2372 QETH_CARD_TEXT(card, 3, "arpquecb");
2373
2374 qinfo = (struct qeth_arp_query_info *) reply->param;
2375 cmd = (struct qeth_ipa_cmd *) data;
2376 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2377 if (cmd->hdr.return_code) {
2378 QETH_CARD_TEXT(card, 4, "arpcberr");
2379 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2380 return 0;
2381 }
2382 if (cmd->data.setassparms.hdr.return_code) {
2383 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2384 QETH_CARD_TEXT(card, 4, "setaperr");
2385 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2386 return 0;
2387 }
2388 qdata = &cmd->data.setassparms.data.query_arp;
2389 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2390
2391 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2392 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2393 entrybytes_done = 0;
2394 for (e = 0; e < qdata->no_entries; ++e) {
2395 char *cur_entry;
2396 __u32 esize;
2397 struct qeth_arp_entrytype *etype;
2398
2399 cur_entry = &qdata->data + entrybytes_done;
2400 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2401 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2402 QETH_CARD_TEXT(card, 4, "pmis");
2403 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2404 break;
2405 }
2406 esize = get_arp_entry_size(card, qdata, etype,
2407 do_strip_entries);
2408 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2409 if (!esize)
2410 break;
2411
2412 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2413 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2414 cmd->hdr.return_code = -ENOMEM;
2415 goto out_error;
2416 }
2417
2418 memcpy(qinfo->udata + qinfo->udata_offset,
2419 &qdata->data + entrybytes_done + stripped_bytes,
2420 esize);
2421 entrybytes_done += esize + stripped_bytes;
2422 qinfo->udata_offset += esize;
2423 ++qinfo->no_entries;
2424 }
2425 /* check if all replies received ... */
2426 if (cmd->data.setassparms.hdr.seq_no <
2427 cmd->data.setassparms.hdr.number_of_replies)
2428 return 1;
2429 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2430 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2431 /* keep STRIP_ENTRIES flag so the user program can distinguish
2432 * stripped entries from normal ones */
2433 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2434 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2435 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2436 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2437 return 0;
2438out_error:
2439 i = 0;
2440 memcpy(qinfo->udata, &i, 4);
2441 return 0;
2442}
2443
2444static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2445 struct qeth_cmd_buffer *iob, int len,
2446 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2447 unsigned long),
2448 void *reply_param)
2449{
2450 QETH_CARD_TEXT(card, 4, "sendarp");
2451
2452 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2453 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2454 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2455 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2456 reply_cb, reply_param);
2457}
2458
2459static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2460 enum qeth_prot_versions prot,
2461 struct qeth_arp_query_info *qinfo)
2462{
2463 struct qeth_cmd_buffer *iob;
2464 struct qeth_ipa_cmd *cmd;
2465 int tmp;
2466 int rc;
2467
2468 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2469
2470 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2471 IPA_CMD_ASS_ARP_QUERY_INFO,
2472 sizeof(struct qeth_arp_query_data) - sizeof(char),
2473 prot);
2474 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2475 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2476 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2477 cmd->data.setassparms.data.query_arp.no_entries = 0;
2478 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2479 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2480 qeth_l3_arp_query_cb, (void *)qinfo);
2481 if (rc) {
2482 tmp = rc;
2483 QETH_DBF_MESSAGE(2,
2484 "Error while querying ARP cache on %s: %s "
2485 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2486 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2487 }
2488
2489 return rc;
2490}
2491
2492static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2493{
2494 struct qeth_arp_query_info qinfo = {0, };
2495 int rc;
2496
2497 QETH_CARD_TEXT(card, 3, "arpquery");
2498
2499 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2500 IPA_ARP_PROCESSING)) {
2501 QETH_CARD_TEXT(card, 3, "arpqnsup");
2502 rc = -EOPNOTSUPP;
2503 goto out;
2504 }
2505 /* get size of userspace buffer and mask_bits -> 6 bytes */
2506 if (copy_from_user(&qinfo, udata, 6)) {
2507 rc = -EFAULT;
2508 goto out;
2509 }
2510 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2511 if (!qinfo.udata) {
2512 rc = -ENOMEM;
2513 goto out;
2514 }
2515 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2516 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2517 if (rc) {
2518 if (copy_to_user(udata, qinfo.udata, 4))
2519 rc = -EFAULT;
2520 goto free_and_out;
2521 } else {
2522#ifdef CONFIG_QETH_IPV6
2523 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2524 /* fails in case of GuestLAN QDIO mode */
2525 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2526 &qinfo);
2527 }
2528#endif
2529 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2530 QETH_CARD_TEXT(card, 4, "qactf");
2531 rc = -EFAULT;
2532 goto free_and_out;
2533 }
2534 QETH_CARD_TEXT_(card, 4, "qacts");
2535 }
2536free_and_out:
2537 kfree(qinfo.udata);
2538out:
2539 return rc;
2540}
2541
2542static int qeth_l3_arp_add_entry(struct qeth_card *card,
2543 struct qeth_arp_cache_entry *entry)
2544{
2545 struct qeth_cmd_buffer *iob;
2546 char buf[16];
2547 int tmp;
2548 int rc;
2549
2550 QETH_CARD_TEXT(card, 3, "arpadent");
2551
2552 /*
2553 * currently GuestLAN only supports the ARP assist function
2554 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2555 * thus we say EOPNOTSUPP for this ARP function
2556 */
2557 if (card->info.guestlan)
2558 return -EOPNOTSUPP;
2559 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2560 return -EOPNOTSUPP;
2561 }
2562
2563 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2564 IPA_CMD_ASS_ARP_ADD_ENTRY,
2565 sizeof(struct qeth_arp_cache_entry),
2566 QETH_PROT_IPV4);
2567 rc = qeth_l3_send_setassparms(card, iob,
2568 sizeof(struct qeth_arp_cache_entry),
2569 (unsigned long) entry,
2570 qeth_l3_default_setassparms_cb, NULL);
2571 if (rc) {
2572 tmp = rc;
2573 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2574 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2575 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2576 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2577 }
2578 return rc;
2579}
2580
2581static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2582 struct qeth_arp_cache_entry *entry)
2583{
2584 struct qeth_cmd_buffer *iob;
2585 char buf[16] = {0, };
2586 int tmp;
2587 int rc;
2588
2589 QETH_CARD_TEXT(card, 3, "arprment");
2590
2591 /*
2592 * currently GuestLAN only supports the ARP assist function
2593 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2594 * thus we say EOPNOTSUPP for this ARP function
2595 */
2596 if (card->info.guestlan)
2597 return -EOPNOTSUPP;
2598 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2599 return -EOPNOTSUPP;
2600 }
2601 memcpy(buf, entry, 12);
2602 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2603 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2604 12,
2605 QETH_PROT_IPV4);
2606 rc = qeth_l3_send_setassparms(card, iob,
2607 12, (unsigned long)buf,
2608 qeth_l3_default_setassparms_cb, NULL);
2609 if (rc) {
2610 tmp = rc;
2611 memset(buf, 0, 16);
2612 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2613 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2614 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2615 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2616 }
2617 return rc;
2618}
2619
2620static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2621{
2622 int rc;
2623 int tmp;
2624
2625 QETH_CARD_TEXT(card, 3, "arpflush");
2626
2627 /*
2628 * currently GuestLAN only supports the ARP assist function
2629 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2630 * thus we say EOPNOTSUPP for this ARP function
2631 */
2632 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2633 return -EOPNOTSUPP;
2634 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2635 return -EOPNOTSUPP;
2636 }
2637 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2638 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2639 if (rc) {
2640 tmp = rc;
2641 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2642 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2643 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2644 }
2645 return rc;
2646}
2647
2648static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2649{
2650 struct qeth_card *card = dev->ml_priv;
2651 struct qeth_arp_cache_entry arp_entry;
2652 struct mii_ioctl_data *mii_data;
2653 int rc = 0;
2654
2655 if (!card)
2656 return -ENODEV;
2657
2658 if ((card->state != CARD_STATE_UP) &&
2659 (card->state != CARD_STATE_SOFTSETUP))
2660 return -ENODEV;
2661
2662 switch (cmd) {
2663 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2664 if (!capable(CAP_NET_ADMIN)) {
2665 rc = -EPERM;
2666 break;
2667 }
2668 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2669 break;
2670 case SIOC_QETH_ARP_QUERY_INFO:
2671 if (!capable(CAP_NET_ADMIN)) {
2672 rc = -EPERM;
2673 break;
2674 }
2675 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2676 break;
2677 case SIOC_QETH_ARP_ADD_ENTRY:
2678 if (!capable(CAP_NET_ADMIN)) {
2679 rc = -EPERM;
2680 break;
2681 }
2682 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2683 sizeof(struct qeth_arp_cache_entry)))
2684 rc = -EFAULT;
2685 else
2686 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2687 break;
2688 case SIOC_QETH_ARP_REMOVE_ENTRY:
2689 if (!capable(CAP_NET_ADMIN)) {
2690 rc = -EPERM;
2691 break;
2692 }
2693 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2694 sizeof(struct qeth_arp_cache_entry)))
2695 rc = -EFAULT;
2696 else
2697 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2698 break;
2699 case SIOC_QETH_ARP_FLUSH_CACHE:
2700 if (!capable(CAP_NET_ADMIN)) {
2701 rc = -EPERM;
2702 break;
2703 }
2704 rc = qeth_l3_arp_flush_cache(card);
2705 break;
2706 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2707 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2708 break;
2709 case SIOC_QETH_GET_CARD_TYPE:
2710 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2711 card->info.type == QETH_CARD_TYPE_OSX) &&
2712 !card->info.guestlan)
2713 return 1;
2714 return 0;
2715 break;
2716 case SIOCGMIIPHY:
2717 mii_data = if_mii(rq);
2718 mii_data->phy_id = 0;
2719 break;
2720 case SIOCGMIIREG:
2721 mii_data = if_mii(rq);
2722 if (mii_data->phy_id != 0)
2723 rc = -EINVAL;
2724 else
2725 mii_data->val_out = qeth_mdio_read(dev,
2726 mii_data->phy_id,
2727 mii_data->reg_num);
2728 break;
2729 default:
2730 rc = -EOPNOTSUPP;
2731 }
2732 if (rc)
2733 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2734 return rc;
2735}
2736
2737int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2738{
2739 int cast_type = RTN_UNSPEC;
2740 struct neighbour *n = NULL;
2741 struct dst_entry *dst;
2742
2743 dst = skb_dst(skb);
2744 if (dst)
2745 n = dst_get_neighbour(dst);
2746 if (n) {
2747 cast_type = n->type;
2748 if ((cast_type == RTN_BROADCAST) ||
2749 (cast_type == RTN_MULTICAST) ||
2750 (cast_type == RTN_ANYCAST))
2751 return cast_type;
2752 else
2753 return RTN_UNSPEC;
2754 }
2755 /* try something else */
2756 if (skb->protocol == ETH_P_IPV6)
2757 return (skb_network_header(skb)[24] == 0xff) ?
2758 RTN_MULTICAST : 0;
2759 else if (skb->protocol == ETH_P_IP)
2760 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2761 RTN_MULTICAST : 0;
2762 /* ... */
2763 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2764 return RTN_BROADCAST;
2765 else {
2766 u16 hdr_mac;
2767
2768 hdr_mac = *((u16 *)skb->data);
2769 /* tr multicast? */
2770 switch (card->info.link_type) {
2771 case QETH_LINK_TYPE_HSTR:
2772 case QETH_LINK_TYPE_LANE_TR:
2773 if ((hdr_mac == QETH_TR_MAC_NC) ||
2774 (hdr_mac == QETH_TR_MAC_C))
2775 return RTN_MULTICAST;
2776 break;
2777 /* eth or so multicast? */
2778 default:
2779 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2780 (hdr_mac == QETH_ETH_MAC_V6))
2781 return RTN_MULTICAST;
2782 }
2783 }
2784 return cast_type;
2785}
2786
2787static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2788 struct sk_buff *skb, int ipv, int cast_type)
2789{
2790 struct neighbour *n = NULL;
2791 struct dst_entry *dst;
2792
2793 memset(hdr, 0, sizeof(struct qeth_hdr));
2794 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2795 hdr->hdr.l3.ext_flags = 0;
2796
2797 /*
2798 * before we're going to overwrite this location with next hop ip.
2799 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2800 */
2801 if (vlan_tx_tag_present(skb)) {
2802 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2803 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2804 else
2805 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2806 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2807 }
2808
2809 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2810 dst = skb_dst(skb);
2811 if (dst)
2812 n = dst_get_neighbour(dst);
2813 if (ipv == 4) {
2814 /* IPv4 */
2815 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2816 memset(hdr->hdr.l3.dest_addr, 0, 12);
2817 if (n) {
2818 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2819 *((u32 *) n->primary_key);
2820 } else {
2821 /* fill in destination address used in ip header */
2822 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2823 ip_hdr(skb)->daddr;
2824 }
2825 } else if (ipv == 6) {
2826 /* IPv6 */
2827 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2828 if (card->info.type == QETH_CARD_TYPE_IQD)
2829 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2830 if (n) {
2831 memcpy(hdr->hdr.l3.dest_addr,
2832 n->primary_key, 16);
2833 } else {
2834 /* fill in destination address used in ip header */
2835 memcpy(hdr->hdr.l3.dest_addr,
2836 &ipv6_hdr(skb)->daddr, 16);
2837 }
2838 } else {
2839 /* passthrough */
2840 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2841 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2842 sizeof(__u16), skb->dev->broadcast, 6)) {
2843 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2844 QETH_HDR_PASSTHRU;
2845 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2846 skb->dev->broadcast, 6)) {
2847 /* broadcast? */
2848 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2849 QETH_HDR_PASSTHRU;
2850 } else {
2851 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2852 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2853 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2854 }
2855 }
2856}
2857
2858static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2859 struct qeth_hdr *hdr, struct sk_buff *skb)
2860{
2861 struct iphdr *iph = ip_hdr(skb);
2862
2863 /* tcph->check contains already the pseudo hdr checksum
2864 * so just set the header flags
2865 */
2866 if (iph->protocol == IPPROTO_UDP)
2867 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2868 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2869 QETH_HDR_EXT_CSUM_HDR_REQ;
2870 iph->check = 0;
2871 if (card->options.performance_stats)
2872 card->perf_stats.tx_csum++;
2873}
2874
2875static void qeth_tso_fill_header(struct qeth_card *card,
2876 struct qeth_hdr *qhdr, struct sk_buff *skb)
2877{
2878 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2879 struct tcphdr *tcph = tcp_hdr(skb);
2880 struct iphdr *iph = ip_hdr(skb);
2881 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2882
2883 /*fix header to TSO values ...*/
2884 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2885 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2886 /*set values which are fix for the first approach ...*/
2887 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2888 hdr->ext.imb_hdr_no = 1;
2889 hdr->ext.hdr_type = 1;
2890 hdr->ext.hdr_version = 1;
2891 hdr->ext.hdr_len = 28;
2892 /*insert non-fix values */
2893 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2894 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2895 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2896 sizeof(struct qeth_hdr_tso));
2897 tcph->check = 0;
2898 if (skb->protocol == ETH_P_IPV6) {
2899 ip6h->payload_len = 0;
2900 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2901 0, IPPROTO_TCP, 0);
2902 } else {
2903 /*OSA want us to set these values ...*/
2904 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2905 0, IPPROTO_TCP, 0);
2906 iph->tot_len = 0;
2907 iph->check = 0;
2908 }
2909}
2910
2911static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2912{
2913 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2914 tcp_hdr(skb)->doff * 4;
2915 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2916 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2917 elements += skb_shinfo(skb)->nr_frags;
2918 return elements;
2919}
2920
2921static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2922{
2923 int rc;
2924 u16 *tag;
2925 struct qeth_hdr *hdr = NULL;
2926 int elements_needed = 0;
2927 int elems;
2928 struct qeth_card *card = dev->ml_priv;
2929 struct sk_buff *new_skb = NULL;
2930 int ipv = qeth_get_ip_version(skb);
2931 int cast_type = qeth_l3_get_cast_type(card, skb);
2932 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2933 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2934 int tx_bytes = skb->len;
2935 bool large_send;
2936 int data_offset = -1;
2937 int nr_frags;
2938
2939 if (((card->info.type == QETH_CARD_TYPE_IQD) && (!ipv)) ||
2940 card->options.sniffer)
2941 goto tx_drop;
2942
2943 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2944 card->stats.tx_carrier_errors++;
2945 goto tx_drop;
2946 }
2947
2948 if ((cast_type == RTN_BROADCAST) &&
2949 (card->info.broadcast_capable == 0))
2950 goto tx_drop;
2951
2952 if (card->options.performance_stats) {
2953 card->perf_stats.outbound_cnt++;
2954 card->perf_stats.outbound_start_time = qeth_get_micros();
2955 }
2956
2957 large_send = skb_is_gso(skb);
2958
2959 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2960 (skb_shinfo(skb)->nr_frags == 0)) {
2961 new_skb = skb;
2962 data_offset = ETH_HLEN;
2963 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2964 if (!hdr)
2965 goto tx_drop;
2966 elements_needed++;
2967 } else {
2968 /* create a clone with writeable headroom */
2969 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2970 + VLAN_HLEN);
2971 if (!new_skb)
2972 goto tx_drop;
2973 }
2974
2975 if (card->info.type == QETH_CARD_TYPE_IQD) {
2976 if (data_offset < 0)
2977 skb_pull(new_skb, ETH_HLEN);
2978 } else {
2979 if (ipv == 4) {
2980 if (card->dev->type == ARPHRD_IEEE802_TR)
2981 skb_pull(new_skb, TR_HLEN);
2982 else
2983 skb_pull(new_skb, ETH_HLEN);
2984 }
2985
2986 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2987 skb_push(new_skb, VLAN_HLEN);
2988 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2989 skb_copy_to_linear_data_offset(new_skb, 4,
2990 new_skb->data + 8, 4);
2991 skb_copy_to_linear_data_offset(new_skb, 8,
2992 new_skb->data + 12, 4);
2993 tag = (u16 *)(new_skb->data + 12);
2994 *tag = __constant_htons(ETH_P_8021Q);
2995 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2996 new_skb->vlan_tci = 0;
2997 }
2998 }
2999
3000 netif_stop_queue(dev);
3001
3002 /* fix hardware limitation: as long as we do not have sbal
3003 * chaining we can not send long frag lists
3004 */
3005 if (large_send) {
3006 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3007 if (skb_linearize(new_skb))
3008 goto tx_drop;
3009 if (card->options.performance_stats)
3010 card->perf_stats.tx_lin++;
3011 }
3012 }
3013
3014 if (large_send && (cast_type == RTN_UNSPEC)) {
3015 hdr = (struct qeth_hdr *)skb_push(new_skb,
3016 sizeof(struct qeth_hdr_tso));
3017 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3018 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3019 qeth_tso_fill_header(card, hdr, new_skb);
3020 elements_needed++;
3021 } else {
3022 if (data_offset < 0) {
3023 hdr = (struct qeth_hdr *)skb_push(new_skb,
3024 sizeof(struct qeth_hdr));
3025 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3026 cast_type);
3027 } else {
3028 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3029 cast_type);
3030 hdr->hdr.l3.length = new_skb->len - data_offset;
3031 }
3032
3033 if (skb->ip_summed == CHECKSUM_PARTIAL)
3034 qeth_l3_hdr_csum(card, hdr, new_skb);
3035 }
3036
3037 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3038 elements_needed);
3039 if (!elems) {
3040 if (data_offset >= 0)
3041 kmem_cache_free(qeth_core_header_cache, hdr);
3042 goto tx_drop;
3043 }
3044 elements_needed += elems;
3045 nr_frags = skb_shinfo(new_skb)->nr_frags;
3046
3047 if (card->info.type != QETH_CARD_TYPE_IQD) {
3048 int len;
3049 if (large_send)
3050 len = ((unsigned long)tcp_hdr(new_skb) +
3051 tcp_hdr(new_skb)->doff * 4) -
3052 (unsigned long)new_skb->data;
3053 else
3054 len = sizeof(struct qeth_hdr_layer3);
3055
3056 if (qeth_hdr_chk_and_bounce(new_skb, len))
3057 goto tx_drop;
3058 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3059 elements_needed);
3060 } else
3061 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3062 elements_needed, data_offset, 0);
3063
3064 if (!rc) {
3065 card->stats.tx_packets++;
3066 card->stats.tx_bytes += tx_bytes;
3067 if (new_skb != skb)
3068 dev_kfree_skb_any(skb);
3069 if (card->options.performance_stats) {
3070 if (large_send) {
3071 card->perf_stats.large_send_bytes += tx_bytes;
3072 card->perf_stats.large_send_cnt++;
3073 }
3074 if (nr_frags) {
3075 card->perf_stats.sg_skbs_sent++;
3076 /* nr_frags + skb->data */
3077 card->perf_stats.sg_frags_sent += nr_frags + 1;
3078 }
3079 }
3080 rc = NETDEV_TX_OK;
3081 } else {
3082 if (data_offset >= 0)
3083 kmem_cache_free(qeth_core_header_cache, hdr);
3084
3085 if (rc == -EBUSY) {
3086 if (new_skb != skb)
3087 dev_kfree_skb_any(new_skb);
3088 return NETDEV_TX_BUSY;
3089 } else
3090 goto tx_drop;
3091 }
3092
3093 netif_wake_queue(dev);
3094 if (card->options.performance_stats)
3095 card->perf_stats.outbound_time += qeth_get_micros() -
3096 card->perf_stats.outbound_start_time;
3097 return rc;
3098
3099tx_drop:
3100 card->stats.tx_dropped++;
3101 card->stats.tx_errors++;
3102 if ((new_skb != skb) && new_skb)
3103 dev_kfree_skb_any(new_skb);
3104 dev_kfree_skb_any(skb);
3105 netif_wake_queue(dev);
3106 return NETDEV_TX_OK;
3107}
3108
3109static int __qeth_l3_open(struct net_device *dev)
3110{
3111 struct qeth_card *card = dev->ml_priv;
3112 int rc = 0;
3113
3114 QETH_CARD_TEXT(card, 4, "qethopen");
3115 if (card->state == CARD_STATE_UP)
3116 return rc;
3117 if (card->state != CARD_STATE_SOFTSETUP)
3118 return -ENODEV;
3119 card->data.state = CH_STATE_UP;
3120 card->state = CARD_STATE_UP;
3121 netif_start_queue(dev);
3122
3123 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3124 napi_enable(&card->napi);
3125 napi_schedule(&card->napi);
3126 } else
3127 rc = -EIO;
3128 return rc;
3129}
3130
3131static int qeth_l3_open(struct net_device *dev)
3132{
3133 struct qeth_card *card = dev->ml_priv;
3134
3135 QETH_CARD_TEXT(card, 5, "qethope_");
3136 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3137 QETH_CARD_TEXT(card, 3, "openREC");
3138 return -ERESTARTSYS;
3139 }
3140 return __qeth_l3_open(dev);
3141}
3142
3143static int qeth_l3_stop(struct net_device *dev)
3144{
3145 struct qeth_card *card = dev->ml_priv;
3146
3147 QETH_CARD_TEXT(card, 4, "qethstop");
3148 netif_tx_disable(dev);
3149 if (card->state == CARD_STATE_UP) {
3150 card->state = CARD_STATE_SOFTSETUP;
3151 napi_disable(&card->napi);
3152 }
3153 return 0;
3154}
3155
3156static u32 qeth_l3_fix_features(struct net_device *dev, u32 features)
3157{
3158 struct qeth_card *card = dev->ml_priv;
3159
3160 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3161 features &= ~NETIF_F_IP_CSUM;
3162 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3163 features &= ~NETIF_F_TSO;
3164 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3165 features &= ~NETIF_F_RXCSUM;
3166
3167 return features;
3168}
3169
3170static int qeth_l3_set_features(struct net_device *dev, u32 features)
3171{
3172 struct qeth_card *card = dev->ml_priv;
3173 u32 changed = dev->features ^ features;
3174 int err;
3175
3176 if (!(changed & NETIF_F_RXCSUM))
3177 return 0;
3178
3179 if (card->state == CARD_STATE_DOWN ||
3180 card->state == CARD_STATE_RECOVER)
3181 return 0;
3182
3183 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3184 if (err)
3185 dev->features = features ^ NETIF_F_RXCSUM;
3186
3187 return err;
3188}
3189
3190static const struct ethtool_ops qeth_l3_ethtool_ops = {
3191 .get_link = ethtool_op_get_link,
3192 .get_strings = qeth_core_get_strings,
3193 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3194 .get_sset_count = qeth_core_get_sset_count,
3195 .get_drvinfo = qeth_core_get_drvinfo,
3196 .get_settings = qeth_core_ethtool_get_settings,
3197};
3198
3199/*
3200 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3201 * NOARP on the netdevice is no option because it also turns off neighbor
3202 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3203 * arp resolution but we want the hard header (packet socket will work
3204 * e.g. tcpdump)
3205 */
3206static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3207{
3208 n->nud_state = NUD_NOARP;
3209 memcpy(n->ha, "FAKELL", 6);
3210 n->output = n->ops->connected_output;
3211 return 0;
3212}
3213
3214static int
3215qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3216{
3217 if (np->tbl->family == AF_INET)
3218 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3219
3220 return 0;
3221}
3222
3223static const struct net_device_ops qeth_l3_netdev_ops = {
3224 .ndo_open = qeth_l3_open,
3225 .ndo_stop = qeth_l3_stop,
3226 .ndo_get_stats = qeth_get_stats,
3227 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3228 .ndo_validate_addr = eth_validate_addr,
3229 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3230 .ndo_do_ioctl = qeth_l3_do_ioctl,
3231 .ndo_change_mtu = qeth_change_mtu,
3232 .ndo_fix_features = qeth_l3_fix_features,
3233 .ndo_set_features = qeth_l3_set_features,
3234 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3235 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3236 .ndo_tx_timeout = qeth_tx_timeout,
3237};
3238
3239static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3240 .ndo_open = qeth_l3_open,
3241 .ndo_stop = qeth_l3_stop,
3242 .ndo_get_stats = qeth_get_stats,
3243 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3244 .ndo_validate_addr = eth_validate_addr,
3245 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3246 .ndo_do_ioctl = qeth_l3_do_ioctl,
3247 .ndo_change_mtu = qeth_change_mtu,
3248 .ndo_fix_features = qeth_l3_fix_features,
3249 .ndo_set_features = qeth_l3_set_features,
3250 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3251 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3252 .ndo_tx_timeout = qeth_tx_timeout,
3253 .ndo_neigh_setup = qeth_l3_neigh_setup,
3254};
3255
3256static int qeth_l3_setup_netdev(struct qeth_card *card)
3257{
3258 if (card->info.type == QETH_CARD_TYPE_OSD ||
3259 card->info.type == QETH_CARD_TYPE_OSX) {
3260 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3261 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3262#ifdef CONFIG_TR
3263 card->dev = alloc_trdev(0);
3264#endif
3265 if (!card->dev)
3266 return -ENODEV;
3267 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3268 } else {
3269 card->dev = alloc_etherdev(0);
3270 if (!card->dev)
3271 return -ENODEV;
3272 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3273
3274 /*IPv6 address autoconfiguration stuff*/
3275 qeth_l3_get_unique_id(card);
3276 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3277 card->dev->dev_id = card->info.unique_id &
3278 0xffff;
3279 if (!card->info.guestlan) {
3280 card->dev->hw_features = NETIF_F_SG |
3281 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3282 NETIF_F_TSO;
3283 card->dev->features = NETIF_F_RXCSUM;
3284 }
3285 }
3286 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3287 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3288 if (!card->dev)
3289 return -ENODEV;
3290 card->dev->flags |= IFF_NOARP;
3291 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3292 qeth_l3_iqd_read_initial_mac(card);
3293 } else
3294 return -ENODEV;
3295
3296 card->dev->ml_priv = card;
3297 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3298 card->dev->mtu = card->info.initial_mtu;
3299 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3300 card->dev->features |= NETIF_F_HW_VLAN_TX |
3301 NETIF_F_HW_VLAN_RX |
3302 NETIF_F_HW_VLAN_FILTER;
3303 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3304 card->dev->gso_max_size = 15 * PAGE_SIZE;
3305
3306 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3307 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3308 return register_netdev(card->dev);
3309}
3310
3311static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3312{
3313 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3314
3315 qeth_l3_create_device_attributes(&gdev->dev);
3316 card->options.layer2 = 0;
3317 card->info.hwtrap = 0;
3318 card->discipline.start_poll = qeth_qdio_start_poll;
3319 card->discipline.input_handler = (qdio_handler_t *)
3320 qeth_qdio_input_handler;
3321 card->discipline.output_handler = (qdio_handler_t *)
3322 qeth_qdio_output_handler;
3323 card->discipline.recover = qeth_l3_recover;
3324 return 0;
3325}
3326
3327static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3328{
3329 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3330
3331 qeth_l3_remove_device_attributes(&cgdev->dev);
3332
3333 qeth_set_allowed_threads(card, 0, 1);
3334 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3335
3336 if (cgdev->state == CCWGROUP_ONLINE)
3337 qeth_l3_set_offline(cgdev);
3338
3339 if (card->dev) {
3340 unregister_netdev(card->dev);
3341 card->dev = NULL;
3342 }
3343
3344 qeth_l3_clear_ip_list(card, 0);
3345 qeth_l3_clear_ipato_list(card);
3346 return;
3347}
3348
3349static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3350{
3351 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3352 int rc = 0;
3353 enum qeth_card_states recover_flag;
3354
3355 BUG_ON(!card);
3356 mutex_lock(&card->discipline_mutex);
3357 mutex_lock(&card->conf_mutex);
3358 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3359 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3360
3361 recover_flag = card->state;
3362 rc = qeth_core_hardsetup_card(card);
3363 if (rc) {
3364 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3365 rc = -ENODEV;
3366 goto out_remove;
3367 }
3368
3369 if (!card->dev && qeth_l3_setup_netdev(card)) {
3370 rc = -ENODEV;
3371 goto out_remove;
3372 }
3373
3374 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3375 if (card->info.hwtrap &&
3376 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3377 card->info.hwtrap = 0;
3378 } else
3379 card->info.hwtrap = 0;
3380
3381 card->state = CARD_STATE_HARDSETUP;
3382 memset(&card->rx, 0, sizeof(struct qeth_rx));
3383 qeth_print_status_message(card);
3384
3385 /* softsetup */
3386 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3387
3388 rc = qeth_send_startlan(card);
3389 if (rc) {
3390 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3391 if (rc == 0xe080) {
3392 dev_warn(&card->gdev->dev,
3393 "The LAN is offline\n");
3394 card->lan_online = 0;
3395 goto contin;
3396 }
3397 rc = -ENODEV;
3398 goto out_remove;
3399 } else
3400 card->lan_online = 1;
3401
3402contin:
3403 rc = qeth_l3_setadapter_parms(card);
3404 if (rc)
3405 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3406 if (!card->options.sniffer) {
3407 rc = qeth_l3_start_ipassists(card);
3408 if (rc)
3409 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3410 rc = qeth_l3_setrouting_v4(card);
3411 if (rc)
3412 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3413 rc = qeth_l3_setrouting_v6(card);
3414 if (rc)
3415 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3416 }
3417 netif_tx_disable(card->dev);
3418
3419 rc = qeth_init_qdio_queues(card);
3420 if (rc) {
3421 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3422 rc = -ENODEV;
3423 goto out_remove;
3424 }
3425 card->state = CARD_STATE_SOFTSETUP;
3426
3427 qeth_set_allowed_threads(card, 0xffffffff, 0);
3428 qeth_l3_set_ip_addr_list(card);
3429 if (card->lan_online)
3430 netif_carrier_on(card->dev);
3431 else
3432 netif_carrier_off(card->dev);
3433 if (recover_flag == CARD_STATE_RECOVER) {
3434 if (recovery_mode)
3435 __qeth_l3_open(card->dev);
3436 else {
3437 rtnl_lock();
3438 dev_open(card->dev);
3439 rtnl_unlock();
3440 }
3441 qeth_l3_set_multicast_list(card->dev);
3442 }
3443 /* let user_space know that device is online */
3444 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3445 mutex_unlock(&card->conf_mutex);
3446 mutex_unlock(&card->discipline_mutex);
3447 return 0;
3448out_remove:
3449 qeth_l3_stop_card(card, 0);
3450 ccw_device_set_offline(CARD_DDEV(card));
3451 ccw_device_set_offline(CARD_WDEV(card));
3452 ccw_device_set_offline(CARD_RDEV(card));
3453 if (recover_flag == CARD_STATE_RECOVER)
3454 card->state = CARD_STATE_RECOVER;
3455 else
3456 card->state = CARD_STATE_DOWN;
3457 mutex_unlock(&card->conf_mutex);
3458 mutex_unlock(&card->discipline_mutex);
3459 return rc;
3460}
3461
3462static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3463{
3464 return __qeth_l3_set_online(gdev, 0);
3465}
3466
3467static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3468 int recovery_mode)
3469{
3470 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3471 int rc = 0, rc2 = 0, rc3 = 0;
3472 enum qeth_card_states recover_flag;
3473
3474 mutex_lock(&card->discipline_mutex);
3475 mutex_lock(&card->conf_mutex);
3476 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3477 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3478
3479 if (card->dev && netif_carrier_ok(card->dev))
3480 netif_carrier_off(card->dev);
3481 recover_flag = card->state;
3482 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3483 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3484 card->info.hwtrap = 1;
3485 }
3486 qeth_l3_stop_card(card, recovery_mode);
3487 rc = ccw_device_set_offline(CARD_DDEV(card));
3488 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3489 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3490 if (!rc)
3491 rc = (rc2) ? rc2 : rc3;
3492 if (rc)
3493 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3494 if (recover_flag == CARD_STATE_UP)
3495 card->state = CARD_STATE_RECOVER;
3496 /* let user_space know that device is offline */
3497 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3498 mutex_unlock(&card->conf_mutex);
3499 mutex_unlock(&card->discipline_mutex);
3500 return 0;
3501}
3502
3503static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3504{
3505 return __qeth_l3_set_offline(cgdev, 0);
3506}
3507
3508static int qeth_l3_recover(void *ptr)
3509{
3510 struct qeth_card *card;
3511 int rc = 0;
3512
3513 card = (struct qeth_card *) ptr;
3514 QETH_CARD_TEXT(card, 2, "recover1");
3515 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3516 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3517 return 0;
3518 QETH_CARD_TEXT(card, 2, "recover2");
3519 dev_warn(&card->gdev->dev,
3520 "A recovery process has been started for the device\n");
3521 __qeth_l3_set_offline(card->gdev, 1);
3522 rc = __qeth_l3_set_online(card->gdev, 1);
3523 if (!rc)
3524 dev_info(&card->gdev->dev,
3525 "Device successfully recovered!\n");
3526 else {
3527 rtnl_lock();
3528 dev_close(card->dev);
3529 rtnl_unlock();
3530 dev_warn(&card->gdev->dev, "The qeth device driver "
3531 "failed to recover an error on the device\n");
3532 }
3533 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3534 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3535 return 0;
3536}
3537
3538static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3539{
3540 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3541 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3542 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3543 qeth_qdio_clear_card(card, 0);
3544 qeth_clear_qdio_buffers(card);
3545}
3546
3547static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3548{
3549 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3550
3551 if (card->dev)
3552 netif_device_detach(card->dev);
3553 qeth_set_allowed_threads(card, 0, 1);
3554 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3555 if (gdev->state == CCWGROUP_OFFLINE)
3556 return 0;
3557 if (card->state == CARD_STATE_UP) {
3558 if (card->info.hwtrap)
3559 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3560 __qeth_l3_set_offline(card->gdev, 1);
3561 } else
3562 __qeth_l3_set_offline(card->gdev, 0);
3563 return 0;
3564}
3565
3566static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3567{
3568 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3569 int rc = 0;
3570
3571 if (gdev->state == CCWGROUP_OFFLINE)
3572 goto out;
3573
3574 if (card->state == CARD_STATE_RECOVER) {
3575 rc = __qeth_l3_set_online(card->gdev, 1);
3576 if (rc) {
3577 rtnl_lock();
3578 dev_close(card->dev);
3579 rtnl_unlock();
3580 }
3581 } else
3582 rc = __qeth_l3_set_online(card->gdev, 0);
3583out:
3584 qeth_set_allowed_threads(card, 0xffffffff, 0);
3585 if (card->dev)
3586 netif_device_attach(card->dev);
3587 if (rc)
3588 dev_warn(&card->gdev->dev, "The qeth device driver "
3589 "failed to recover an error on the device\n");
3590 return rc;
3591}
3592
3593struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3594 .probe = qeth_l3_probe_device,
3595 .remove = qeth_l3_remove_device,
3596 .set_online = qeth_l3_set_online,
3597 .set_offline = qeth_l3_set_offline,
3598 .shutdown = qeth_l3_shutdown,
3599 .freeze = qeth_l3_pm_suspend,
3600 .thaw = qeth_l3_pm_resume,
3601 .restore = qeth_l3_pm_resume,
3602};
3603EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3604
3605static int qeth_l3_ip_event(struct notifier_block *this,
3606 unsigned long event, void *ptr)
3607{
3608 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3609 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3610 struct qeth_ipaddr *addr;
3611 struct qeth_card *card;
3612
3613 if (dev_net(dev) != &init_net)
3614 return NOTIFY_DONE;
3615
3616 card = qeth_l3_get_card_from_dev(dev);
3617 QETH_CARD_TEXT(card, 3, "ipevent");
3618 if (!card)
3619 return NOTIFY_DONE;
3620
3621 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3622 if (addr != NULL) {
3623 addr->u.a4.addr = ifa->ifa_address;
3624 addr->u.a4.mask = ifa->ifa_mask;
3625 addr->type = QETH_IP_TYPE_NORMAL;
3626 } else
3627 goto out;
3628
3629 switch (event) {
3630 case NETDEV_UP:
3631 if (!qeth_l3_add_ip(card, addr))
3632 kfree(addr);
3633 break;
3634 case NETDEV_DOWN:
3635 if (!qeth_l3_delete_ip(card, addr))
3636 kfree(addr);
3637 break;
3638 default:
3639 break;
3640 }
3641 qeth_l3_set_ip_addr_list(card);
3642out:
3643 return NOTIFY_DONE;
3644}
3645
3646static struct notifier_block qeth_l3_ip_notifier = {
3647 qeth_l3_ip_event,
3648 NULL,
3649};
3650
3651#ifdef CONFIG_QETH_IPV6
3652/**
3653 * IPv6 event handler
3654 */
3655static int qeth_l3_ip6_event(struct notifier_block *this,
3656 unsigned long event, void *ptr)
3657{
3658 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3659 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3660 struct qeth_ipaddr *addr;
3661 struct qeth_card *card;
3662
3663
3664 card = qeth_l3_get_card_from_dev(dev);
3665 if (!card)
3666 return NOTIFY_DONE;
3667 QETH_CARD_TEXT(card, 3, "ip6event");
3668 if (!qeth_is_supported(card, IPA_IPV6))
3669 return NOTIFY_DONE;
3670
3671 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3672 if (addr != NULL) {
3673 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3674 addr->u.a6.pfxlen = ifa->prefix_len;
3675 addr->type = QETH_IP_TYPE_NORMAL;
3676 } else
3677 goto out;
3678
3679 switch (event) {
3680 case NETDEV_UP:
3681 if (!qeth_l3_add_ip(card, addr))
3682 kfree(addr);
3683 break;
3684 case NETDEV_DOWN:
3685 if (!qeth_l3_delete_ip(card, addr))
3686 kfree(addr);
3687 break;
3688 default:
3689 break;
3690 }
3691 qeth_l3_set_ip_addr_list(card);
3692out:
3693 return NOTIFY_DONE;
3694}
3695
3696static struct notifier_block qeth_l3_ip6_notifier = {
3697 qeth_l3_ip6_event,
3698 NULL,
3699};
3700#endif
3701
3702static int qeth_l3_register_notifiers(void)
3703{
3704 int rc;
3705
3706 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3707 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3708 if (rc)
3709 return rc;
3710#ifdef CONFIG_QETH_IPV6
3711 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3712 if (rc) {
3713 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3714 return rc;
3715 }
3716#else
3717 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3718#endif
3719 return 0;
3720}
3721
3722static void qeth_l3_unregister_notifiers(void)
3723{
3724
3725 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3726 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3727#ifdef CONFIG_QETH_IPV6
3728 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3729#endif /* QETH_IPV6 */
3730}
3731
3732static int __init qeth_l3_init(void)
3733{
3734 int rc = 0;
3735
3736 pr_info("register layer 3 discipline\n");
3737 rc = qeth_l3_register_notifiers();
3738 return rc;
3739}
3740
3741static void __exit qeth_l3_exit(void)
3742{
3743 qeth_l3_unregister_notifiers();
3744 pr_info("unregister layer 3 discipline\n");
3745}
3746
3747module_init(qeth_l3_init);
3748module_exit(qeth_l3_exit);
3749MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3750MODULE_DESCRIPTION("qeth layer 3 discipline");
3751MODULE_LICENSE("GPL");
1/*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11#define KMSG_COMPONENT "qeth"
12#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/bitops.h>
17#include <linux/string.h>
18#include <linux/errno.h>
19#include <linux/kernel.h>
20#include <linux/etherdevice.h>
21#include <linux/mii.h>
22#include <linux/ip.h>
23#include <linux/ipv6.h>
24#include <linux/inetdevice.h>
25#include <linux/igmp.h>
26#include <linux/slab.h>
27#include <linux/if_vlan.h>
28
29#include <net/ip.h>
30#include <net/arp.h>
31#include <net/route.h>
32#include <net/ip6_fib.h>
33#include <net/ip6_checksum.h>
34#include <net/iucv/af_iucv.h>
35
36#include "qeth_l3.h"
37
38
39static int qeth_l3_set_offline(struct ccwgroup_device *);
40static int qeth_l3_recover(void *);
41static int qeth_l3_stop(struct net_device *);
42static void qeth_l3_set_multicast_list(struct net_device *);
43static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
44static int qeth_l3_register_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46static int qeth_l3_deregister_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
48static int __qeth_l3_set_online(struct ccwgroup_device *, int);
49static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
50
51static int qeth_l3_isxdigit(char *buf)
52{
53 while (*buf) {
54 if (!isxdigit(*buf++))
55 return 0;
56 }
57 return 1;
58}
59
60void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
61{
62 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
63}
64
65int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
66{
67 int count = 0, rc = 0;
68 int in[4];
69 char c;
70
71 rc = sscanf(buf, "%u.%u.%u.%u%c",
72 &in[0], &in[1], &in[2], &in[3], &c);
73 if (rc != 4 && (rc != 5 || c != '\n'))
74 return -EINVAL;
75 for (count = 0; count < 4; count++) {
76 if (in[count] > 255)
77 return -EINVAL;
78 addr[count] = in[count];
79 }
80 return 0;
81}
82
83void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
84{
85 sprintf(buf, "%pI6", addr);
86}
87
88int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
89{
90 const char *end, *end_tmp, *start;
91 __u16 *in;
92 char num[5];
93 int num2, cnt, out, found, save_cnt;
94 unsigned short in_tmp[8] = {0, };
95
96 cnt = out = found = save_cnt = num2 = 0;
97 end = start = buf;
98 in = (__u16 *) addr;
99 memset(in, 0, 16);
100 while (*end) {
101 end = strchr(start, ':');
102 if (end == NULL) {
103 end = buf + strlen(buf);
104 end_tmp = strchr(start, '\n');
105 if (end_tmp != NULL)
106 end = end_tmp;
107 out = 1;
108 }
109 if ((end - start)) {
110 memset(num, 0, 5);
111 if ((end - start) > 4)
112 return -EINVAL;
113 memcpy(num, start, end - start);
114 if (!qeth_l3_isxdigit(num))
115 return -EINVAL;
116 sscanf(start, "%x", &num2);
117 if (found)
118 in_tmp[save_cnt++] = num2;
119 else
120 in[cnt++] = num2;
121 if (out)
122 break;
123 } else {
124 if (found)
125 return -EINVAL;
126 found = 1;
127 }
128 start = ++end;
129 }
130 if (cnt + save_cnt > 8)
131 return -EINVAL;
132 cnt = 7;
133 while (save_cnt)
134 in[cnt--] = in_tmp[--save_cnt];
135 return 0;
136}
137
138void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
139 char *buf)
140{
141 if (proto == QETH_PROT_IPV4)
142 qeth_l3_ipaddr4_to_string(addr, buf);
143 else if (proto == QETH_PROT_IPV6)
144 qeth_l3_ipaddr6_to_string(addr, buf);
145}
146
147int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
148 __u8 *addr)
149{
150 if (proto == QETH_PROT_IPV4)
151 return qeth_l3_string_to_ipaddr4(buf, addr);
152 else if (proto == QETH_PROT_IPV6)
153 return qeth_l3_string_to_ipaddr6(buf, addr);
154 else
155 return -EINVAL;
156}
157
158static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
159{
160 int i, j;
161 u8 octet;
162
163 for (i = 0; i < len; ++i) {
164 octet = addr[i];
165 for (j = 7; j >= 0; --j) {
166 bits[i*8 + j] = octet & 1;
167 octet >>= 1;
168 }
169 }
170}
171
172int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
173 struct qeth_ipaddr *addr)
174{
175 struct qeth_ipato_entry *ipatoe;
176 u8 addr_bits[128] = {0, };
177 u8 ipatoe_bits[128] = {0, };
178 int rc = 0;
179
180 if (!card->ipato.enabled)
181 return 0;
182
183 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
184 (addr->proto == QETH_PROT_IPV4)? 4:16);
185 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
186 if (addr->proto != ipatoe->proto)
187 continue;
188 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
189 (ipatoe->proto == QETH_PROT_IPV4) ?
190 4 : 16);
191 if (addr->proto == QETH_PROT_IPV4)
192 rc = !memcmp(addr_bits, ipatoe_bits,
193 min(32, ipatoe->mask_bits));
194 else
195 rc = !memcmp(addr_bits, ipatoe_bits,
196 min(128, ipatoe->mask_bits));
197 if (rc)
198 break;
199 }
200 /* invert? */
201 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
202 rc = !rc;
203 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
204 rc = !rc;
205
206 return rc;
207}
208
209/*
210 * Add IP to be added to todo list. If there is already an "add todo"
211 * in this list we just incremenent the reference count.
212 * Returns 0 if we just incremented reference count.
213 */
214static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
215 struct qeth_ipaddr *addr, int add)
216{
217 struct qeth_ipaddr *tmp, *t;
218 int found = 0;
219
220 if (card->options.sniffer)
221 return 0;
222 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
223 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
224 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
225 return 0;
226 if ((tmp->proto == QETH_PROT_IPV4) &&
227 (addr->proto == QETH_PROT_IPV4) &&
228 (tmp->type == addr->type) &&
229 (tmp->is_multicast == addr->is_multicast) &&
230 (tmp->u.a4.addr == addr->u.a4.addr) &&
231 (tmp->u.a4.mask == addr->u.a4.mask)) {
232 found = 1;
233 break;
234 }
235 if ((tmp->proto == QETH_PROT_IPV6) &&
236 (addr->proto == QETH_PROT_IPV6) &&
237 (tmp->type == addr->type) &&
238 (tmp->is_multicast == addr->is_multicast) &&
239 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
240 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
241 sizeof(struct in6_addr)) == 0)) {
242 found = 1;
243 break;
244 }
245 }
246 if (found) {
247 if (addr->users != 0)
248 tmp->users += addr->users;
249 else
250 tmp->users += add ? 1 : -1;
251 if (tmp->users == 0) {
252 list_del(&tmp->entry);
253 kfree(tmp);
254 }
255 return 0;
256 } else {
257 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
258 list_add(&addr->entry, card->ip_tbd_list);
259 else {
260 if (addr->users == 0)
261 addr->users += add ? 1 : -1;
262 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
263 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
264 QETH_CARD_TEXT(card, 2, "tkovaddr");
265 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
266 }
267 list_add_tail(&addr->entry, card->ip_tbd_list);
268 }
269 return 1;
270 }
271}
272
273int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
274{
275 unsigned long flags;
276 int rc = 0;
277
278 QETH_CARD_TEXT(card, 4, "delip");
279
280 if (addr->proto == QETH_PROT_IPV4)
281 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
282 else {
283 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
284 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
285 }
286 spin_lock_irqsave(&card->ip_lock, flags);
287 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
288 spin_unlock_irqrestore(&card->ip_lock, flags);
289 return rc;
290}
291
292int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
293{
294 unsigned long flags;
295 int rc = 0;
296
297 QETH_CARD_TEXT(card, 4, "addip");
298 if (addr->proto == QETH_PROT_IPV4)
299 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
300 else {
301 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
302 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
303 }
304 spin_lock_irqsave(&card->ip_lock, flags);
305 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
306 spin_unlock_irqrestore(&card->ip_lock, flags);
307 return rc;
308}
309
310
311struct qeth_ipaddr *qeth_l3_get_addr_buffer(
312 enum qeth_prot_versions prot)
313{
314 struct qeth_ipaddr *addr;
315
316 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
317 if (addr == NULL) {
318 return NULL;
319 }
320 addr->type = QETH_IP_TYPE_NORMAL;
321 addr->proto = prot;
322 return addr;
323}
324
325static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
326{
327 struct qeth_ipaddr *iptodo;
328 unsigned long flags;
329
330 QETH_CARD_TEXT(card, 4, "delmc");
331 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
332 if (!iptodo) {
333 QETH_CARD_TEXT(card, 2, "dmcnomem");
334 return;
335 }
336 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
337 spin_lock_irqsave(&card->ip_lock, flags);
338 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
339 kfree(iptodo);
340 spin_unlock_irqrestore(&card->ip_lock, flags);
341}
342
343/*
344 * Add/remove address to/from card's ip list, i.e. try to add or remove
345 * reference to/from an IP address that is already registered on the card.
346 * Returns:
347 * 0 address was on card and its reference count has been adjusted,
348 * but is still > 0, so nothing has to be done
349 * also returns 0 if card was not on card and the todo was to delete
350 * the address -> there is also nothing to be done
351 * 1 address was not on card and the todo is to add it to the card's ip
352 * list
353 * -1 address was on card and its reference count has been decremented
354 * to <= 0 by the todo -> address must be removed from card
355 */
356static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
357 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
358{
359 struct qeth_ipaddr *addr;
360 int found = 0;
361
362 list_for_each_entry(addr, &card->ip_list, entry) {
363 if ((addr->proto == QETH_PROT_IPV4) &&
364 (todo->proto == QETH_PROT_IPV4) &&
365 (addr->type == todo->type) &&
366 (addr->u.a4.addr == todo->u.a4.addr) &&
367 (addr->u.a4.mask == todo->u.a4.mask)) {
368 found = 1;
369 break;
370 }
371 if ((addr->proto == QETH_PROT_IPV6) &&
372 (todo->proto == QETH_PROT_IPV6) &&
373 (addr->type == todo->type) &&
374 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
375 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
376 sizeof(struct in6_addr)) == 0)) {
377 found = 1;
378 break;
379 }
380 }
381 if (found) {
382 addr->users += todo->users;
383 if (addr->users <= 0) {
384 *__addr = addr;
385 return -1;
386 } else {
387 /* for VIPA and RXIP limit refcount to 1 */
388 if (addr->type != QETH_IP_TYPE_NORMAL)
389 addr->users = 1;
390 return 0;
391 }
392 }
393 if (todo->users > 0) {
394 /* for VIPA and RXIP limit refcount to 1 */
395 if (todo->type != QETH_IP_TYPE_NORMAL)
396 todo->users = 1;
397 return 1;
398 } else
399 return 0;
400}
401
402static void __qeth_l3_delete_all_mc(struct qeth_card *card,
403 unsigned long *flags)
404{
405 struct list_head fail_list;
406 struct qeth_ipaddr *addr, *tmp;
407 int rc;
408
409 INIT_LIST_HEAD(&fail_list);
410again:
411 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
412 if (addr->is_multicast) {
413 list_del(&addr->entry);
414 spin_unlock_irqrestore(&card->ip_lock, *flags);
415 rc = qeth_l3_deregister_addr_entry(card, addr);
416 spin_lock_irqsave(&card->ip_lock, *flags);
417 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
418 kfree(addr);
419 else
420 list_add_tail(&addr->entry, &fail_list);
421 goto again;
422 }
423 }
424 list_splice(&fail_list, &card->ip_list);
425}
426
427void qeth_l3_set_ip_addr_list(struct qeth_card *card)
428{
429 struct list_head *tbd_list;
430 struct qeth_ipaddr *todo, *addr;
431 unsigned long flags;
432 int rc;
433
434 QETH_CARD_TEXT(card, 2, "sdiplist");
435 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
436
437 if ((card->state != CARD_STATE_UP &&
438 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
439 return;
440 }
441
442 spin_lock_irqsave(&card->ip_lock, flags);
443 tbd_list = card->ip_tbd_list;
444 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
445 if (!card->ip_tbd_list) {
446 QETH_CARD_TEXT(card, 0, "silnomem");
447 card->ip_tbd_list = tbd_list;
448 spin_unlock_irqrestore(&card->ip_lock, flags);
449 return;
450 } else
451 INIT_LIST_HEAD(card->ip_tbd_list);
452
453 while (!list_empty(tbd_list)) {
454 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
455 list_del(&todo->entry);
456 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
457 __qeth_l3_delete_all_mc(card, &flags);
458 kfree(todo);
459 continue;
460 }
461 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
462 if (rc == 0) {
463 /* nothing to be done; only adjusted refcount */
464 kfree(todo);
465 } else if (rc == 1) {
466 /* new entry to be added to on-card list */
467 spin_unlock_irqrestore(&card->ip_lock, flags);
468 rc = qeth_l3_register_addr_entry(card, todo);
469 spin_lock_irqsave(&card->ip_lock, flags);
470 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
471 list_add_tail(&todo->entry, &card->ip_list);
472 else
473 kfree(todo);
474 } else if (rc == -1) {
475 /* on-card entry to be removed */
476 list_del_init(&addr->entry);
477 spin_unlock_irqrestore(&card->ip_lock, flags);
478 rc = qeth_l3_deregister_addr_entry(card, addr);
479 spin_lock_irqsave(&card->ip_lock, flags);
480 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
481 kfree(addr);
482 else
483 list_add_tail(&addr->entry, &card->ip_list);
484 kfree(todo);
485 }
486 }
487 spin_unlock_irqrestore(&card->ip_lock, flags);
488 kfree(tbd_list);
489}
490
491static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
492{
493 struct qeth_ipaddr *addr, *tmp;
494 unsigned long flags;
495
496 QETH_CARD_TEXT(card, 4, "clearip");
497 if (recover && card->options.sniffer)
498 return;
499 spin_lock_irqsave(&card->ip_lock, flags);
500 /* clear todo list */
501 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
502 list_del(&addr->entry);
503 kfree(addr);
504 }
505
506 while (!list_empty(&card->ip_list)) {
507 addr = list_entry(card->ip_list.next,
508 struct qeth_ipaddr, entry);
509 list_del_init(&addr->entry);
510 if (!recover || addr->is_multicast) {
511 kfree(addr);
512 continue;
513 }
514 list_add_tail(&addr->entry, card->ip_tbd_list);
515 }
516 spin_unlock_irqrestore(&card->ip_lock, flags);
517}
518
519static int qeth_l3_address_exists_in_list(struct list_head *list,
520 struct qeth_ipaddr *addr, int same_type)
521{
522 struct qeth_ipaddr *tmp;
523
524 list_for_each_entry(tmp, list, entry) {
525 if ((tmp->proto == QETH_PROT_IPV4) &&
526 (addr->proto == QETH_PROT_IPV4) &&
527 ((same_type && (tmp->type == addr->type)) ||
528 (!same_type && (tmp->type != addr->type))) &&
529 (tmp->u.a4.addr == addr->u.a4.addr))
530 return 1;
531
532 if ((tmp->proto == QETH_PROT_IPV6) &&
533 (addr->proto == QETH_PROT_IPV6) &&
534 ((same_type && (tmp->type == addr->type)) ||
535 (!same_type && (tmp->type != addr->type))) &&
536 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
537 sizeof(struct in6_addr)) == 0))
538 return 1;
539
540 }
541 return 0;
542}
543
544static int qeth_l3_send_setdelmc(struct qeth_card *card,
545 struct qeth_ipaddr *addr, int ipacmd)
546{
547 int rc;
548 struct qeth_cmd_buffer *iob;
549 struct qeth_ipa_cmd *cmd;
550
551 QETH_CARD_TEXT(card, 4, "setdelmc");
552
553 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
554 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
555 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
556 if (addr->proto == QETH_PROT_IPV6)
557 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
558 sizeof(struct in6_addr));
559 else
560 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
561
562 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
563
564 return rc;
565}
566
567static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
568{
569 int i, j;
570 for (i = 0; i < 16; i++) {
571 j = (len) - (i * 8);
572 if (j >= 8)
573 netmask[i] = 0xff;
574 else if (j > 0)
575 netmask[i] = (u8)(0xFF00 >> j);
576 else
577 netmask[i] = 0;
578 }
579}
580
581static int qeth_l3_send_setdelip(struct qeth_card *card,
582 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
583{
584 int rc;
585 struct qeth_cmd_buffer *iob;
586 struct qeth_ipa_cmd *cmd;
587 __u8 netmask[16];
588
589 QETH_CARD_TEXT(card, 4, "setdelip");
590 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
591
592 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
593 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
594 if (addr->proto == QETH_PROT_IPV6) {
595 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
596 sizeof(struct in6_addr));
597 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
598 memcpy(cmd->data.setdelip6.mask, netmask,
599 sizeof(struct in6_addr));
600 cmd->data.setdelip6.flags = flags;
601 } else {
602 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
603 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
604 cmd->data.setdelip4.flags = flags;
605 }
606
607 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
608
609 return rc;
610}
611
612static int qeth_l3_send_setrouting(struct qeth_card *card,
613 enum qeth_routing_types type, enum qeth_prot_versions prot)
614{
615 int rc;
616 struct qeth_ipa_cmd *cmd;
617 struct qeth_cmd_buffer *iob;
618
619 QETH_CARD_TEXT(card, 4, "setroutg");
620 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
621 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
622 cmd->data.setrtg.type = (type);
623 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
624
625 return rc;
626}
627
628static void qeth_l3_correct_routing_type(struct qeth_card *card,
629 enum qeth_routing_types *type, enum qeth_prot_versions prot)
630{
631 if (card->info.type == QETH_CARD_TYPE_IQD) {
632 switch (*type) {
633 case NO_ROUTER:
634 case PRIMARY_CONNECTOR:
635 case SECONDARY_CONNECTOR:
636 case MULTICAST_ROUTER:
637 return;
638 default:
639 goto out_inval;
640 }
641 } else {
642 switch (*type) {
643 case NO_ROUTER:
644 case PRIMARY_ROUTER:
645 case SECONDARY_ROUTER:
646 return;
647 case MULTICAST_ROUTER:
648 if (qeth_is_ipafunc_supported(card, prot,
649 IPA_OSA_MC_ROUTER))
650 return;
651 default:
652 goto out_inval;
653 }
654 }
655out_inval:
656 *type = NO_ROUTER;
657}
658
659int qeth_l3_setrouting_v4(struct qeth_card *card)
660{
661 int rc;
662
663 QETH_CARD_TEXT(card, 3, "setrtg4");
664
665 qeth_l3_correct_routing_type(card, &card->options.route4.type,
666 QETH_PROT_IPV4);
667
668 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
669 QETH_PROT_IPV4);
670 if (rc) {
671 card->options.route4.type = NO_ROUTER;
672 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
673 " on %s. Type set to 'no router'.\n", rc,
674 QETH_CARD_IFNAME(card));
675 }
676 return rc;
677}
678
679int qeth_l3_setrouting_v6(struct qeth_card *card)
680{
681 int rc = 0;
682
683 QETH_CARD_TEXT(card, 3, "setrtg6");
684#ifdef CONFIG_QETH_IPV6
685
686 if (!qeth_is_supported(card, IPA_IPV6))
687 return 0;
688 qeth_l3_correct_routing_type(card, &card->options.route6.type,
689 QETH_PROT_IPV6);
690
691 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
692 QETH_PROT_IPV6);
693 if (rc) {
694 card->options.route6.type = NO_ROUTER;
695 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
696 " on %s. Type set to 'no router'.\n", rc,
697 QETH_CARD_IFNAME(card));
698 }
699#endif
700 return rc;
701}
702
703/*
704 * IP address takeover related functions
705 */
706static void qeth_l3_clear_ipato_list(struct qeth_card *card)
707{
708
709 struct qeth_ipato_entry *ipatoe, *tmp;
710 unsigned long flags;
711
712 spin_lock_irqsave(&card->ip_lock, flags);
713 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
714 list_del(&ipatoe->entry);
715 kfree(ipatoe);
716 }
717 spin_unlock_irqrestore(&card->ip_lock, flags);
718}
719
720int qeth_l3_add_ipato_entry(struct qeth_card *card,
721 struct qeth_ipato_entry *new)
722{
723 struct qeth_ipato_entry *ipatoe;
724 unsigned long flags;
725 int rc = 0;
726
727 QETH_CARD_TEXT(card, 2, "addipato");
728 spin_lock_irqsave(&card->ip_lock, flags);
729 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
730 if (ipatoe->proto != new->proto)
731 continue;
732 if (!memcmp(ipatoe->addr, new->addr,
733 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
734 (ipatoe->mask_bits == new->mask_bits)) {
735 rc = -EEXIST;
736 break;
737 }
738 }
739 if (!rc)
740 list_add_tail(&new->entry, &card->ipato.entries);
741
742 spin_unlock_irqrestore(&card->ip_lock, flags);
743 return rc;
744}
745
746void qeth_l3_del_ipato_entry(struct qeth_card *card,
747 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
748{
749 struct qeth_ipato_entry *ipatoe, *tmp;
750 unsigned long flags;
751
752 QETH_CARD_TEXT(card, 2, "delipato");
753 spin_lock_irqsave(&card->ip_lock, flags);
754 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
755 if (ipatoe->proto != proto)
756 continue;
757 if (!memcmp(ipatoe->addr, addr,
758 (proto == QETH_PROT_IPV4)? 4:16) &&
759 (ipatoe->mask_bits == mask_bits)) {
760 list_del(&ipatoe->entry);
761 kfree(ipatoe);
762 }
763 }
764 spin_unlock_irqrestore(&card->ip_lock, flags);
765}
766
767/*
768 * VIPA related functions
769 */
770int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
771 const u8 *addr)
772{
773 struct qeth_ipaddr *ipaddr;
774 unsigned long flags;
775 int rc = 0;
776
777 ipaddr = qeth_l3_get_addr_buffer(proto);
778 if (ipaddr) {
779 if (proto == QETH_PROT_IPV4) {
780 QETH_CARD_TEXT(card, 2, "addvipa4");
781 memcpy(&ipaddr->u.a4.addr, addr, 4);
782 ipaddr->u.a4.mask = 0;
783 } else if (proto == QETH_PROT_IPV6) {
784 QETH_CARD_TEXT(card, 2, "addvipa6");
785 memcpy(&ipaddr->u.a6.addr, addr, 16);
786 ipaddr->u.a6.pfxlen = 0;
787 }
788 ipaddr->type = QETH_IP_TYPE_VIPA;
789 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
790 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
791 } else
792 return -ENOMEM;
793 spin_lock_irqsave(&card->ip_lock, flags);
794 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
795 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
796 rc = -EEXIST;
797 spin_unlock_irqrestore(&card->ip_lock, flags);
798 if (rc) {
799 return rc;
800 }
801 if (!qeth_l3_add_ip(card, ipaddr))
802 kfree(ipaddr);
803 qeth_l3_set_ip_addr_list(card);
804 return rc;
805}
806
807void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
808 const u8 *addr)
809{
810 struct qeth_ipaddr *ipaddr;
811
812 ipaddr = qeth_l3_get_addr_buffer(proto);
813 if (ipaddr) {
814 if (proto == QETH_PROT_IPV4) {
815 QETH_CARD_TEXT(card, 2, "delvipa4");
816 memcpy(&ipaddr->u.a4.addr, addr, 4);
817 ipaddr->u.a4.mask = 0;
818 } else if (proto == QETH_PROT_IPV6) {
819 QETH_CARD_TEXT(card, 2, "delvipa6");
820 memcpy(&ipaddr->u.a6.addr, addr, 16);
821 ipaddr->u.a6.pfxlen = 0;
822 }
823 ipaddr->type = QETH_IP_TYPE_VIPA;
824 } else
825 return;
826 if (!qeth_l3_delete_ip(card, ipaddr))
827 kfree(ipaddr);
828 qeth_l3_set_ip_addr_list(card);
829}
830
831/*
832 * proxy ARP related functions
833 */
834int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
835 const u8 *addr)
836{
837 struct qeth_ipaddr *ipaddr;
838 unsigned long flags;
839 int rc = 0;
840
841 ipaddr = qeth_l3_get_addr_buffer(proto);
842 if (ipaddr) {
843 if (proto == QETH_PROT_IPV4) {
844 QETH_CARD_TEXT(card, 2, "addrxip4");
845 memcpy(&ipaddr->u.a4.addr, addr, 4);
846 ipaddr->u.a4.mask = 0;
847 } else if (proto == QETH_PROT_IPV6) {
848 QETH_CARD_TEXT(card, 2, "addrxip6");
849 memcpy(&ipaddr->u.a6.addr, addr, 16);
850 ipaddr->u.a6.pfxlen = 0;
851 }
852 ipaddr->type = QETH_IP_TYPE_RXIP;
853 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
854 ipaddr->del_flags = 0;
855 } else
856 return -ENOMEM;
857 spin_lock_irqsave(&card->ip_lock, flags);
858 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
859 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
860 rc = -EEXIST;
861 spin_unlock_irqrestore(&card->ip_lock, flags);
862 if (rc) {
863 return rc;
864 }
865 if (!qeth_l3_add_ip(card, ipaddr))
866 kfree(ipaddr);
867 qeth_l3_set_ip_addr_list(card);
868 return 0;
869}
870
871void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
872 const u8 *addr)
873{
874 struct qeth_ipaddr *ipaddr;
875
876 ipaddr = qeth_l3_get_addr_buffer(proto);
877 if (ipaddr) {
878 if (proto == QETH_PROT_IPV4) {
879 QETH_CARD_TEXT(card, 2, "addrxip4");
880 memcpy(&ipaddr->u.a4.addr, addr, 4);
881 ipaddr->u.a4.mask = 0;
882 } else if (proto == QETH_PROT_IPV6) {
883 QETH_CARD_TEXT(card, 2, "addrxip6");
884 memcpy(&ipaddr->u.a6.addr, addr, 16);
885 ipaddr->u.a6.pfxlen = 0;
886 }
887 ipaddr->type = QETH_IP_TYPE_RXIP;
888 } else
889 return;
890 if (!qeth_l3_delete_ip(card, ipaddr))
891 kfree(ipaddr);
892 qeth_l3_set_ip_addr_list(card);
893}
894
895static int qeth_l3_register_addr_entry(struct qeth_card *card,
896 struct qeth_ipaddr *addr)
897{
898 char buf[50];
899 int rc = 0;
900 int cnt = 3;
901
902 if (addr->proto == QETH_PROT_IPV4) {
903 QETH_CARD_TEXT(card, 2, "setaddr4");
904 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
905 } else if (addr->proto == QETH_PROT_IPV6) {
906 QETH_CARD_TEXT(card, 2, "setaddr6");
907 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
908 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
909 } else {
910 QETH_CARD_TEXT(card, 2, "setaddr?");
911 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
912 }
913 do {
914 if (addr->is_multicast)
915 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
916 else
917 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
918 addr->set_flags);
919 if (rc)
920 QETH_CARD_TEXT(card, 2, "failed");
921 } while ((--cnt > 0) && rc);
922 if (rc) {
923 QETH_CARD_TEXT(card, 2, "FAILED");
924 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
925 dev_warn(&card->gdev->dev,
926 "Registering IP address %s failed\n", buf);
927 }
928 return rc;
929}
930
931static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
932 struct qeth_ipaddr *addr)
933{
934 int rc = 0;
935
936 if (addr->proto == QETH_PROT_IPV4) {
937 QETH_CARD_TEXT(card, 2, "deladdr4");
938 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
939 } else if (addr->proto == QETH_PROT_IPV6) {
940 QETH_CARD_TEXT(card, 2, "deladdr6");
941 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
942 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
943 } else {
944 QETH_CARD_TEXT(card, 2, "deladdr?");
945 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
946 }
947 if (addr->is_multicast)
948 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
949 else
950 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
951 addr->del_flags);
952 if (rc)
953 QETH_CARD_TEXT(card, 2, "failed");
954
955 return rc;
956}
957
958static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
959{
960 if (cast_type == RTN_MULTICAST)
961 return QETH_CAST_MULTICAST;
962 if (cast_type == RTN_BROADCAST)
963 return QETH_CAST_BROADCAST;
964 return QETH_CAST_UNICAST;
965}
966
967static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
968{
969 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
970 if (cast_type == RTN_MULTICAST)
971 return ct | QETH_CAST_MULTICAST;
972 if (cast_type == RTN_ANYCAST)
973 return ct | QETH_CAST_ANYCAST;
974 if (cast_type == RTN_BROADCAST)
975 return ct | QETH_CAST_BROADCAST;
976 return ct | QETH_CAST_UNICAST;
977}
978
979static int qeth_l3_setadapter_parms(struct qeth_card *card)
980{
981 int rc;
982
983 QETH_DBF_TEXT(SETUP, 2, "setadprm");
984
985 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
986 dev_info(&card->gdev->dev,
987 "set adapter parameters not supported.\n");
988 QETH_DBF_TEXT(SETUP, 2, " notsupp");
989 return 0;
990 }
991 rc = qeth_query_setadapterparms(card);
992 if (rc) {
993 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
994 "0x%x\n", dev_name(&card->gdev->dev), rc);
995 return rc;
996 }
997 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
998 rc = qeth_setadpparms_change_macaddr(card);
999 if (rc)
1000 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1001 " address failed\n");
1002 }
1003
1004 return rc;
1005}
1006
1007static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1008 struct qeth_reply *reply, unsigned long data)
1009{
1010 struct qeth_ipa_cmd *cmd;
1011
1012 QETH_CARD_TEXT(card, 4, "defadpcb");
1013
1014 cmd = (struct qeth_ipa_cmd *) data;
1015 if (cmd->hdr.return_code == 0) {
1016 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1017 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1018 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1019 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1020 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1021 }
1022 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1023 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1024 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1025 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1026 }
1027 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1028 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029 card->info.tx_csum_mask =
1030 cmd->data.setassparms.data.flags_32bit;
1031 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1032 }
1033
1034 return 0;
1035}
1036
1037static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1038 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1039 __u16 len, enum qeth_prot_versions prot)
1040{
1041 struct qeth_cmd_buffer *iob;
1042 struct qeth_ipa_cmd *cmd;
1043
1044 QETH_CARD_TEXT(card, 4, "getasscm");
1045 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1046
1047 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1048 cmd->data.setassparms.hdr.assist_no = ipa_func;
1049 cmd->data.setassparms.hdr.length = 8 + len;
1050 cmd->data.setassparms.hdr.command_code = cmd_code;
1051 cmd->data.setassparms.hdr.return_code = 0;
1052 cmd->data.setassparms.hdr.seq_no = 0;
1053
1054 return iob;
1055}
1056
1057static int qeth_l3_send_setassparms(struct qeth_card *card,
1058 struct qeth_cmd_buffer *iob, __u16 len, long data,
1059 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1060 unsigned long),
1061 void *reply_param)
1062{
1063 int rc;
1064 struct qeth_ipa_cmd *cmd;
1065
1066 QETH_CARD_TEXT(card, 4, "sendassp");
1067
1068 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1069 if (len <= sizeof(__u32))
1070 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1071 else /* (len > sizeof(__u32)) */
1072 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1073
1074 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1075 return rc;
1076}
1077
1078#ifdef CONFIG_QETH_IPV6
1079static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1080 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1081{
1082 int rc;
1083 struct qeth_cmd_buffer *iob;
1084
1085 QETH_CARD_TEXT(card, 4, "simassp6");
1086 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1087 0, QETH_PROT_IPV6);
1088 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1089 qeth_l3_default_setassparms_cb, NULL);
1090 return rc;
1091}
1092#endif
1093
1094static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1095 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1096{
1097 int rc;
1098 int length = 0;
1099 struct qeth_cmd_buffer *iob;
1100
1101 QETH_CARD_TEXT(card, 4, "simassp4");
1102 if (data)
1103 length = sizeof(__u32);
1104 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1105 length, QETH_PROT_IPV4);
1106 rc = qeth_l3_send_setassparms(card, iob, length, data,
1107 qeth_l3_default_setassparms_cb, NULL);
1108 return rc;
1109}
1110
1111static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1112{
1113 int rc;
1114
1115 QETH_CARD_TEXT(card, 3, "ipaarp");
1116
1117 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1118 dev_info(&card->gdev->dev,
1119 "ARP processing not supported on %s!\n",
1120 QETH_CARD_IFNAME(card));
1121 return 0;
1122 }
1123 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1124 IPA_CMD_ASS_START, 0);
1125 if (rc) {
1126 dev_warn(&card->gdev->dev,
1127 "Starting ARP processing support for %s failed\n",
1128 QETH_CARD_IFNAME(card));
1129 }
1130 return rc;
1131}
1132
1133static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1134{
1135 int rc;
1136
1137 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1138
1139 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1140 dev_info(&card->gdev->dev,
1141 "Hardware IP fragmentation not supported on %s\n",
1142 QETH_CARD_IFNAME(card));
1143 return -EOPNOTSUPP;
1144 }
1145
1146 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1147 IPA_CMD_ASS_START, 0);
1148 if (rc) {
1149 dev_warn(&card->gdev->dev,
1150 "Starting IP fragmentation support for %s failed\n",
1151 QETH_CARD_IFNAME(card));
1152 } else
1153 dev_info(&card->gdev->dev,
1154 "Hardware IP fragmentation enabled \n");
1155 return rc;
1156}
1157
1158static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1159{
1160 int rc;
1161
1162 QETH_CARD_TEXT(card, 3, "stsrcmac");
1163
1164 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1165 dev_info(&card->gdev->dev,
1166 "Inbound source MAC-address not supported on %s\n",
1167 QETH_CARD_IFNAME(card));
1168 return -EOPNOTSUPP;
1169 }
1170
1171 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1172 IPA_CMD_ASS_START, 0);
1173 if (rc)
1174 dev_warn(&card->gdev->dev,
1175 "Starting source MAC-address support for %s failed\n",
1176 QETH_CARD_IFNAME(card));
1177 return rc;
1178}
1179
1180static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1181{
1182 int rc = 0;
1183
1184 QETH_CARD_TEXT(card, 3, "strtvlan");
1185
1186 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1187 dev_info(&card->gdev->dev,
1188 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1189 return -EOPNOTSUPP;
1190 }
1191
1192 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1193 IPA_CMD_ASS_START, 0);
1194 if (rc) {
1195 dev_warn(&card->gdev->dev,
1196 "Starting VLAN support for %s failed\n",
1197 QETH_CARD_IFNAME(card));
1198 } else {
1199 dev_info(&card->gdev->dev, "VLAN enabled\n");
1200 }
1201 return rc;
1202}
1203
1204static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1205{
1206 int rc;
1207
1208 QETH_CARD_TEXT(card, 3, "stmcast");
1209
1210 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1211 dev_info(&card->gdev->dev,
1212 "Multicast not supported on %s\n",
1213 QETH_CARD_IFNAME(card));
1214 return -EOPNOTSUPP;
1215 }
1216
1217 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1218 IPA_CMD_ASS_START, 0);
1219 if (rc) {
1220 dev_warn(&card->gdev->dev,
1221 "Starting multicast support for %s failed\n",
1222 QETH_CARD_IFNAME(card));
1223 } else {
1224 dev_info(&card->gdev->dev, "Multicast enabled\n");
1225 card->dev->flags |= IFF_MULTICAST;
1226 }
1227 return rc;
1228}
1229
1230#ifdef CONFIG_QETH_IPV6
1231static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1232{
1233 int rc;
1234
1235 QETH_CARD_TEXT(card, 3, "softipv6");
1236
1237 if (card->info.type == QETH_CARD_TYPE_IQD)
1238 goto out;
1239
1240 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1241 if (rc) {
1242 dev_err(&card->gdev->dev,
1243 "Activating IPv6 support for %s failed\n",
1244 QETH_CARD_IFNAME(card));
1245 return rc;
1246 }
1247 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1248 IPA_CMD_ASS_START, 3);
1249 if (rc) {
1250 dev_err(&card->gdev->dev,
1251 "Activating IPv6 support for %s failed\n",
1252 QETH_CARD_IFNAME(card));
1253 return rc;
1254 }
1255 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1256 IPA_CMD_ASS_START);
1257 if (rc) {
1258 dev_err(&card->gdev->dev,
1259 "Activating IPv6 support for %s failed\n",
1260 QETH_CARD_IFNAME(card));
1261 return rc;
1262 }
1263 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1264 IPA_CMD_ASS_START);
1265 if (rc) {
1266 dev_warn(&card->gdev->dev,
1267 "Enabling the passthrough mode for %s failed\n",
1268 QETH_CARD_IFNAME(card));
1269 return rc;
1270 }
1271out:
1272 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1273 return 0;
1274}
1275#endif
1276
1277static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1278{
1279 int rc = 0;
1280
1281 QETH_CARD_TEXT(card, 3, "strtipv6");
1282
1283 if (!qeth_is_supported(card, IPA_IPV6)) {
1284 dev_info(&card->gdev->dev,
1285 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1286 return 0;
1287 }
1288#ifdef CONFIG_QETH_IPV6
1289 rc = qeth_l3_softsetup_ipv6(card);
1290#endif
1291 return rc ;
1292}
1293
1294static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1295{
1296 int rc;
1297
1298 QETH_CARD_TEXT(card, 3, "stbrdcst");
1299 card->info.broadcast_capable = 0;
1300 if (!qeth_is_supported(card, IPA_FILTERING)) {
1301 dev_info(&card->gdev->dev,
1302 "Broadcast not supported on %s\n",
1303 QETH_CARD_IFNAME(card));
1304 rc = -EOPNOTSUPP;
1305 goto out;
1306 }
1307 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1308 IPA_CMD_ASS_START, 0);
1309 if (rc) {
1310 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1311 "%s failed\n", QETH_CARD_IFNAME(card));
1312 goto out;
1313 }
1314
1315 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1316 IPA_CMD_ASS_CONFIGURE, 1);
1317 if (rc) {
1318 dev_warn(&card->gdev->dev,
1319 "Setting up broadcast filtering for %s failed\n",
1320 QETH_CARD_IFNAME(card));
1321 goto out;
1322 }
1323 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1324 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1325 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1326 IPA_CMD_ASS_ENABLE, 1);
1327 if (rc) {
1328 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1329 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1330 goto out;
1331 }
1332 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1333out:
1334 if (card->info.broadcast_capable)
1335 card->dev->flags |= IFF_BROADCAST;
1336 else
1337 card->dev->flags &= ~IFF_BROADCAST;
1338 return rc;
1339}
1340
1341static int qeth_l3_send_checksum_command(struct qeth_card *card)
1342{
1343 int rc;
1344
1345 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1346 IPA_CMD_ASS_START, 0);
1347 if (rc) {
1348 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1349 "failed, using SW checksumming\n",
1350 QETH_CARD_IFNAME(card));
1351 return rc;
1352 }
1353 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1354 IPA_CMD_ASS_ENABLE,
1355 card->info.csum_mask);
1356 if (rc) {
1357 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1358 "failed, using SW checksumming\n",
1359 QETH_CARD_IFNAME(card));
1360 return rc;
1361 }
1362 return 0;
1363}
1364
1365static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1366{
1367 int rc = 0;
1368
1369 if (on) {
1370 rc = qeth_l3_send_checksum_command(card);
1371 if (rc)
1372 return -EIO;
1373 dev_info(&card->gdev->dev,
1374 "HW Checksumming (inbound) enabled\n");
1375 } else {
1376 rc = qeth_l3_send_simple_setassparms(card,
1377 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1378 if (rc)
1379 return -EIO;
1380 }
1381
1382 return 0;
1383}
1384
1385static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1386{
1387 QETH_CARD_TEXT(card, 3, "strtcsum");
1388
1389 if (card->dev->features & NETIF_F_RXCSUM) {
1390 rtnl_lock();
1391 /* force set_features call */
1392 card->dev->features &= ~NETIF_F_RXCSUM;
1393 netdev_update_features(card->dev);
1394 rtnl_unlock();
1395 }
1396 return 0;
1397}
1398
1399static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1400{
1401 int rc = 0;
1402
1403 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1404 return rc;
1405 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1406 IPA_CMD_ASS_START, 0);
1407 if (rc)
1408 goto err_out;
1409 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1410 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1411 if (rc)
1412 goto err_out;
1413 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1414 return rc;
1415err_out:
1416 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1417 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1418 return rc;
1419}
1420
1421static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1422{
1423 int rc;
1424
1425 QETH_CARD_TEXT(card, 3, "sttso");
1426
1427 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1428 dev_info(&card->gdev->dev,
1429 "Outbound TSO not supported on %s\n",
1430 QETH_CARD_IFNAME(card));
1431 rc = -EOPNOTSUPP;
1432 } else {
1433 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1434 IPA_CMD_ASS_START, 0);
1435 if (rc)
1436 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1437 "segmentation offload for %s failed\n",
1438 QETH_CARD_IFNAME(card));
1439 else
1440 dev_info(&card->gdev->dev,
1441 "Outbound TSO enabled\n");
1442 }
1443 if (rc)
1444 card->dev->features &= ~NETIF_F_TSO;
1445 return rc;
1446}
1447
1448static int qeth_l3_start_ipassists(struct qeth_card *card)
1449{
1450 QETH_CARD_TEXT(card, 3, "strtipas");
1451
1452 qeth_set_access_ctrl_online(card); /* go on*/
1453 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1454 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1455 qeth_l3_start_ipa_source_mac(card); /* go on*/
1456 qeth_l3_start_ipa_vlan(card); /* go on*/
1457 qeth_l3_start_ipa_multicast(card); /* go on*/
1458 qeth_l3_start_ipa_ipv6(card); /* go on*/
1459 qeth_l3_start_ipa_broadcast(card); /* go on*/
1460 qeth_l3_start_ipa_checksum(card); /* go on*/
1461 qeth_l3_start_ipa_tx_checksum(card);
1462 qeth_l3_start_ipa_tso(card); /* go on*/
1463 return 0;
1464}
1465
1466static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1467 struct qeth_reply *reply, unsigned long data)
1468{
1469 struct qeth_ipa_cmd *cmd;
1470
1471 cmd = (struct qeth_ipa_cmd *) data;
1472 if (cmd->hdr.return_code == 0)
1473 memcpy(card->dev->dev_addr,
1474 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1475 else
1476 random_ether_addr(card->dev->dev_addr);
1477
1478 return 0;
1479}
1480
1481static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1482{
1483 int rc = 0;
1484 struct qeth_cmd_buffer *iob;
1485 struct qeth_ipa_cmd *cmd;
1486
1487 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1488
1489 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1490 QETH_PROT_IPV6);
1491 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1492 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1493 card->info.unique_id;
1494
1495 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1496 NULL);
1497 return rc;
1498}
1499
1500static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1501 struct qeth_reply *reply, unsigned long data)
1502{
1503 struct qeth_ipa_cmd *cmd;
1504
1505 cmd = (struct qeth_ipa_cmd *) data;
1506 if (cmd->hdr.return_code == 0)
1507 card->info.unique_id = *((__u16 *)
1508 &cmd->data.create_destroy_addr.unique_id[6]);
1509 else {
1510 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1511 UNIQUE_ID_NOT_BY_CARD;
1512 dev_warn(&card->gdev->dev, "The network adapter failed to "
1513 "generate a unique ID\n");
1514 }
1515 return 0;
1516}
1517
1518static int qeth_l3_get_unique_id(struct qeth_card *card)
1519{
1520 int rc = 0;
1521 struct qeth_cmd_buffer *iob;
1522 struct qeth_ipa_cmd *cmd;
1523
1524 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1525
1526 if (!qeth_is_supported(card, IPA_IPV6)) {
1527 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1528 UNIQUE_ID_NOT_BY_CARD;
1529 return 0;
1530 }
1531
1532 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1533 QETH_PROT_IPV6);
1534 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1535 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1536 card->info.unique_id;
1537
1538 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1539 return rc;
1540}
1541
1542static int
1543qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1544 unsigned long data)
1545{
1546 struct qeth_ipa_cmd *cmd;
1547 __u16 rc;
1548
1549 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1550
1551 cmd = (struct qeth_ipa_cmd *)data;
1552 rc = cmd->hdr.return_code;
1553 if (rc)
1554 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1555 switch (cmd->data.diagass.action) {
1556 case QETH_DIAGS_CMD_TRACE_QUERY:
1557 break;
1558 case QETH_DIAGS_CMD_TRACE_DISABLE:
1559 switch (rc) {
1560 case 0:
1561 case IPA_RC_INVALID_SUBCMD:
1562 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1563 dev_info(&card->gdev->dev, "The HiperSockets network "
1564 "traffic analyzer is deactivated\n");
1565 break;
1566 default:
1567 break;
1568 }
1569 break;
1570 case QETH_DIAGS_CMD_TRACE_ENABLE:
1571 switch (rc) {
1572 case 0:
1573 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1574 dev_info(&card->gdev->dev, "The HiperSockets network "
1575 "traffic analyzer is activated\n");
1576 break;
1577 case IPA_RC_HARDWARE_AUTH_ERROR:
1578 dev_warn(&card->gdev->dev, "The device is not "
1579 "authorized to run as a HiperSockets network "
1580 "traffic analyzer\n");
1581 break;
1582 case IPA_RC_TRACE_ALREADY_ACTIVE:
1583 dev_warn(&card->gdev->dev, "A HiperSockets "
1584 "network traffic analyzer is already "
1585 "active in the HiperSockets LAN\n");
1586 break;
1587 default:
1588 break;
1589 }
1590 break;
1591 default:
1592 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1593 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1594 }
1595
1596 return 0;
1597}
1598
1599static int
1600qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1601{
1602 struct qeth_cmd_buffer *iob;
1603 struct qeth_ipa_cmd *cmd;
1604
1605 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1606
1607 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1608 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1609 cmd->data.diagass.subcmd_len = 16;
1610 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1611 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1612 cmd->data.diagass.action = diags_cmd;
1613 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1614}
1615
1616static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1617 struct net_device *dev)
1618{
1619 ip_eth_mc_map(ipm, mac);
1620}
1621
1622static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1623{
1624 struct qeth_ipaddr *ipm;
1625 struct ip_mc_list *im4;
1626 char buf[MAX_ADDR_LEN];
1627
1628 QETH_CARD_TEXT(card, 4, "addmc");
1629 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1630 im4 = rcu_dereference(im4->next_rcu)) {
1631 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1632 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1633 if (!ipm)
1634 continue;
1635 ipm->u.a4.addr = im4->multiaddr;
1636 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1637 ipm->is_multicast = 1;
1638 if (!qeth_l3_add_ip(card, ipm))
1639 kfree(ipm);
1640 }
1641}
1642
1643static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1644{
1645 struct in_device *in_dev;
1646 u16 vid;
1647
1648 QETH_CARD_TEXT(card, 4, "addmcvl");
1649 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1650 return;
1651
1652 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1653 struct net_device *netdev;
1654
1655 rcu_read_lock();
1656 netdev = __vlan_find_dev_deep(card->dev, vid);
1657 rcu_read_unlock();
1658 if (netdev == NULL ||
1659 !(netdev->flags & IFF_UP))
1660 continue;
1661 in_dev = in_dev_get(netdev);
1662 if (!in_dev)
1663 continue;
1664 rcu_read_lock();
1665 qeth_l3_add_mc(card, in_dev);
1666 rcu_read_unlock();
1667 in_dev_put(in_dev);
1668 }
1669}
1670
1671static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1672{
1673 struct in_device *in4_dev;
1674
1675 QETH_CARD_TEXT(card, 4, "chkmcv4");
1676 in4_dev = in_dev_get(card->dev);
1677 if (in4_dev == NULL)
1678 return;
1679 rcu_read_lock();
1680 qeth_l3_add_mc(card, in4_dev);
1681 qeth_l3_add_vlan_mc(card);
1682 rcu_read_unlock();
1683 in_dev_put(in4_dev);
1684}
1685
1686#ifdef CONFIG_QETH_IPV6
1687static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1688{
1689 struct qeth_ipaddr *ipm;
1690 struct ifmcaddr6 *im6;
1691 char buf[MAX_ADDR_LEN];
1692
1693 QETH_CARD_TEXT(card, 4, "addmc6");
1694 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1695 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1696 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1697 if (!ipm)
1698 continue;
1699 ipm->is_multicast = 1;
1700 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1701 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1702 sizeof(struct in6_addr));
1703 if (!qeth_l3_add_ip(card, ipm))
1704 kfree(ipm);
1705 }
1706}
1707
1708static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1709{
1710 struct inet6_dev *in_dev;
1711 u16 vid;
1712
1713 QETH_CARD_TEXT(card, 4, "admc6vl");
1714 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1715 return;
1716
1717 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1718 struct net_device *netdev;
1719
1720 netdev = __vlan_find_dev_deep(card->dev, vid);
1721 if (netdev == NULL ||
1722 !(netdev->flags & IFF_UP))
1723 continue;
1724 in_dev = in6_dev_get(netdev);
1725 if (!in_dev)
1726 continue;
1727 read_lock_bh(&in_dev->lock);
1728 qeth_l3_add_mc6(card, in_dev);
1729 read_unlock_bh(&in_dev->lock);
1730 in6_dev_put(in_dev);
1731 }
1732}
1733
1734static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1735{
1736 struct inet6_dev *in6_dev;
1737
1738 QETH_CARD_TEXT(card, 4, "chkmcv6");
1739 if (!qeth_is_supported(card, IPA_IPV6))
1740 return ;
1741 in6_dev = in6_dev_get(card->dev);
1742 if (in6_dev == NULL)
1743 return;
1744 read_lock_bh(&in6_dev->lock);
1745 qeth_l3_add_mc6(card, in6_dev);
1746 qeth_l3_add_vlan_mc6(card);
1747 read_unlock_bh(&in6_dev->lock);
1748 in6_dev_put(in6_dev);
1749}
1750#endif /* CONFIG_QETH_IPV6 */
1751
1752static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1753 unsigned short vid)
1754{
1755 struct in_device *in_dev;
1756 struct in_ifaddr *ifa;
1757 struct qeth_ipaddr *addr;
1758 struct net_device *netdev;
1759
1760 QETH_CARD_TEXT(card, 4, "frvaddr4");
1761
1762 netdev = __vlan_find_dev_deep(card->dev, vid);
1763 if (!netdev)
1764 return;
1765 in_dev = in_dev_get(netdev);
1766 if (!in_dev)
1767 return;
1768 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1769 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1770 if (addr) {
1771 addr->u.a4.addr = ifa->ifa_address;
1772 addr->u.a4.mask = ifa->ifa_mask;
1773 addr->type = QETH_IP_TYPE_NORMAL;
1774 if (!qeth_l3_delete_ip(card, addr))
1775 kfree(addr);
1776 }
1777 }
1778 in_dev_put(in_dev);
1779}
1780
1781static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1782 unsigned short vid)
1783{
1784#ifdef CONFIG_QETH_IPV6
1785 struct inet6_dev *in6_dev;
1786 struct inet6_ifaddr *ifa;
1787 struct qeth_ipaddr *addr;
1788 struct net_device *netdev;
1789
1790 QETH_CARD_TEXT(card, 4, "frvaddr6");
1791
1792 netdev = __vlan_find_dev_deep(card->dev, vid);
1793 if (!netdev)
1794 return;
1795 in6_dev = in6_dev_get(netdev);
1796 if (!in6_dev)
1797 return;
1798 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1799 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1800 if (addr) {
1801 memcpy(&addr->u.a6.addr, &ifa->addr,
1802 sizeof(struct in6_addr));
1803 addr->u.a6.pfxlen = ifa->prefix_len;
1804 addr->type = QETH_IP_TYPE_NORMAL;
1805 if (!qeth_l3_delete_ip(card, addr))
1806 kfree(addr);
1807 }
1808 }
1809 in6_dev_put(in6_dev);
1810#endif /* CONFIG_QETH_IPV6 */
1811}
1812
1813static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1814 unsigned short vid)
1815{
1816 qeth_l3_free_vlan_addresses4(card, vid);
1817 qeth_l3_free_vlan_addresses6(card, vid);
1818}
1819
1820static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1821{
1822 struct qeth_card *card = dev->ml_priv;
1823
1824 set_bit(vid, card->active_vlans);
1825 return 0;
1826}
1827
1828static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1829{
1830 struct qeth_card *card = dev->ml_priv;
1831 unsigned long flags;
1832
1833 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1834 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1835 QETH_CARD_TEXT(card, 3, "kidREC");
1836 return 0;
1837 }
1838 spin_lock_irqsave(&card->vlanlock, flags);
1839 /* unregister IP addresses of vlan device */
1840 qeth_l3_free_vlan_addresses(card, vid);
1841 clear_bit(vid, card->active_vlans);
1842 spin_unlock_irqrestore(&card->vlanlock, flags);
1843 qeth_l3_set_multicast_list(card->dev);
1844 return 0;
1845}
1846
1847static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1848 struct sk_buff *skb, struct qeth_hdr *hdr,
1849 unsigned short *vlan_id)
1850{
1851 __be16 prot;
1852 struct iphdr *ip_hdr;
1853 unsigned char tg_addr[MAX_ADDR_LEN];
1854 int is_vlan = 0;
1855
1856 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1857 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1858 ETH_P_IP);
1859 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1860 case QETH_CAST_MULTICAST:
1861 switch (prot) {
1862#ifdef CONFIG_QETH_IPV6
1863 case __constant_htons(ETH_P_IPV6):
1864 ndisc_mc_map((struct in6_addr *)
1865 skb->data + 24,
1866 tg_addr, card->dev, 0);
1867 break;
1868#endif
1869 case __constant_htons(ETH_P_IP):
1870 ip_hdr = (struct iphdr *)skb->data;
1871 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1872 break;
1873 default:
1874 memcpy(tg_addr, card->dev->broadcast,
1875 card->dev->addr_len);
1876 }
1877 card->stats.multicast++;
1878 skb->pkt_type = PACKET_MULTICAST;
1879 break;
1880 case QETH_CAST_BROADCAST:
1881 memcpy(tg_addr, card->dev->broadcast,
1882 card->dev->addr_len);
1883 card->stats.multicast++;
1884 skb->pkt_type = PACKET_BROADCAST;
1885 break;
1886 case QETH_CAST_UNICAST:
1887 case QETH_CAST_ANYCAST:
1888 case QETH_CAST_NOCAST:
1889 default:
1890 if (card->options.sniffer)
1891 skb->pkt_type = PACKET_OTHERHOST;
1892 else
1893 skb->pkt_type = PACKET_HOST;
1894 memcpy(tg_addr, card->dev->dev_addr,
1895 card->dev->addr_len);
1896 }
1897 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1898 card->dev->header_ops->create(skb, card->dev, prot,
1899 tg_addr, &hdr->hdr.l3.dest_addr[2],
1900 card->dev->addr_len);
1901 else
1902 card->dev->header_ops->create(skb, card->dev, prot,
1903 tg_addr, "FAKELL", card->dev->addr_len);
1904 }
1905
1906 skb->protocol = eth_type_trans(skb, card->dev);
1907
1908 if (hdr->hdr.l3.ext_flags &
1909 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1910 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1911 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1912 is_vlan = 1;
1913 }
1914
1915 if (card->dev->features & NETIF_F_RXCSUM) {
1916 if ((hdr->hdr.l3.ext_flags &
1917 (QETH_HDR_EXT_CSUM_HDR_REQ |
1918 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1919 (QETH_HDR_EXT_CSUM_HDR_REQ |
1920 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1921 skb->ip_summed = CHECKSUM_UNNECESSARY;
1922 else
1923 skb->ip_summed = CHECKSUM_NONE;
1924 } else
1925 skb->ip_summed = CHECKSUM_NONE;
1926
1927 return is_vlan;
1928}
1929
1930static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1931 int budget, int *done)
1932{
1933 int work_done = 0;
1934 struct sk_buff *skb;
1935 struct qeth_hdr *hdr;
1936 __u16 vlan_tag = 0;
1937 int is_vlan;
1938 unsigned int len;
1939 __u16 magic;
1940
1941 *done = 0;
1942 BUG_ON(!budget);
1943 while (budget) {
1944 skb = qeth_core_get_next_skb(card,
1945 &card->qdio.in_q->bufs[card->rx.b_index],
1946 &card->rx.b_element, &card->rx.e_offset, &hdr);
1947 if (!skb) {
1948 *done = 1;
1949 break;
1950 }
1951 skb->dev = card->dev;
1952 switch (hdr->hdr.l3.id) {
1953 case QETH_HEADER_TYPE_LAYER3:
1954 magic = *(__u16 *)skb->data;
1955 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1956 (magic == ETH_P_AF_IUCV)) {
1957 skb->protocol = ETH_P_AF_IUCV;
1958 skb->pkt_type = PACKET_HOST;
1959 skb->mac_header = NET_SKB_PAD;
1960 skb->dev = card->dev;
1961 len = skb->len;
1962 card->dev->header_ops->create(skb, card->dev, 0,
1963 card->dev->dev_addr, "FAKELL",
1964 card->dev->addr_len);
1965 netif_receive_skb(skb);
1966 } else {
1967 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1968 &vlan_tag);
1969 len = skb->len;
1970 if (is_vlan && !card->options.sniffer)
1971 __vlan_hwaccel_put_tag(skb, vlan_tag);
1972 napi_gro_receive(&card->napi, skb);
1973 }
1974 break;
1975 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1976 skb->pkt_type = PACKET_HOST;
1977 skb->protocol = eth_type_trans(skb, skb->dev);
1978 len = skb->len;
1979 netif_receive_skb(skb);
1980 break;
1981 default:
1982 dev_kfree_skb_any(skb);
1983 QETH_CARD_TEXT(card, 3, "inbunkno");
1984 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1985 continue;
1986 }
1987 work_done++;
1988 budget--;
1989 card->stats.rx_packets++;
1990 card->stats.rx_bytes += len;
1991 }
1992 return work_done;
1993}
1994
1995static int qeth_l3_poll(struct napi_struct *napi, int budget)
1996{
1997 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1998 int work_done = 0;
1999 struct qeth_qdio_buffer *buffer;
2000 int done;
2001 int new_budget = budget;
2002
2003 if (card->options.performance_stats) {
2004 card->perf_stats.inbound_cnt++;
2005 card->perf_stats.inbound_start_time = qeth_get_micros();
2006 }
2007
2008 while (1) {
2009 if (!card->rx.b_count) {
2010 card->rx.qdio_err = 0;
2011 card->rx.b_count = qdio_get_next_buffers(
2012 card->data.ccwdev, 0, &card->rx.b_index,
2013 &card->rx.qdio_err);
2014 if (card->rx.b_count <= 0) {
2015 card->rx.b_count = 0;
2016 break;
2017 }
2018 card->rx.b_element =
2019 &card->qdio.in_q->bufs[card->rx.b_index]
2020 .buffer->element[0];
2021 card->rx.e_offset = 0;
2022 }
2023
2024 while (card->rx.b_count) {
2025 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2026 if (!(card->rx.qdio_err &&
2027 qeth_check_qdio_errors(card, buffer->buffer,
2028 card->rx.qdio_err, "qinerr")))
2029 work_done += qeth_l3_process_inbound_buffer(
2030 card, new_budget, &done);
2031 else
2032 done = 1;
2033
2034 if (done) {
2035 if (card->options.performance_stats)
2036 card->perf_stats.bufs_rec++;
2037 qeth_put_buffer_pool_entry(card,
2038 buffer->pool_entry);
2039 qeth_queue_input_buffer(card, card->rx.b_index);
2040 card->rx.b_count--;
2041 if (card->rx.b_count) {
2042 card->rx.b_index =
2043 (card->rx.b_index + 1) %
2044 QDIO_MAX_BUFFERS_PER_Q;
2045 card->rx.b_element =
2046 &card->qdio.in_q
2047 ->bufs[card->rx.b_index]
2048 .buffer->element[0];
2049 card->rx.e_offset = 0;
2050 }
2051 }
2052
2053 if (work_done >= budget)
2054 goto out;
2055 else
2056 new_budget = budget - work_done;
2057 }
2058 }
2059
2060 napi_complete(napi);
2061 if (qdio_start_irq(card->data.ccwdev, 0))
2062 napi_schedule(&card->napi);
2063out:
2064 if (card->options.performance_stats)
2065 card->perf_stats.inbound_time += qeth_get_micros() -
2066 card->perf_stats.inbound_start_time;
2067 return work_done;
2068}
2069
2070static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2071 struct qeth_card *card)
2072{
2073 int rc = 0;
2074 u16 vid;
2075
2076 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2077 struct net_device *netdev;
2078
2079 rcu_read_lock();
2080 netdev = __vlan_find_dev_deep(card->dev, vid);
2081 rcu_read_unlock();
2082 if (netdev == dev) {
2083 rc = QETH_VLAN_CARD;
2084 break;
2085 }
2086 }
2087
2088 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2089 return 0;
2090
2091 return rc;
2092}
2093
2094static int qeth_l3_verify_dev(struct net_device *dev)
2095{
2096 struct qeth_card *card;
2097 unsigned long flags;
2098 int rc = 0;
2099
2100 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2101 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2102 if (card->dev == dev) {
2103 rc = QETH_REAL_CARD;
2104 break;
2105 }
2106 rc = qeth_l3_verify_vlan_dev(dev, card);
2107 if (rc)
2108 break;
2109 }
2110 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2111
2112 return rc;
2113}
2114
2115static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2116{
2117 struct qeth_card *card = NULL;
2118 int rc;
2119
2120 rc = qeth_l3_verify_dev(dev);
2121 if (rc == QETH_REAL_CARD)
2122 card = dev->ml_priv;
2123 else if (rc == QETH_VLAN_CARD)
2124 card = vlan_dev_real_dev(dev)->ml_priv;
2125 if (card && card->options.layer2)
2126 card = NULL;
2127 if (card)
2128 QETH_CARD_TEXT_(card, 4, "%d", rc);
2129 return card ;
2130}
2131
2132static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2133{
2134 int rc = 0;
2135
2136 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2137 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2138
2139 qeth_set_allowed_threads(card, 0, 1);
2140 if (card->options.sniffer &&
2141 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2142 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2143 if (card->read.state == CH_STATE_UP &&
2144 card->write.state == CH_STATE_UP &&
2145 (card->state == CARD_STATE_UP)) {
2146 if (recovery_mode)
2147 qeth_l3_stop(card->dev);
2148 else {
2149 rtnl_lock();
2150 dev_close(card->dev);
2151 rtnl_unlock();
2152 }
2153 card->state = CARD_STATE_SOFTSETUP;
2154 }
2155 if (card->state == CARD_STATE_SOFTSETUP) {
2156 qeth_l3_clear_ip_list(card, 1);
2157 qeth_clear_ipacmd_list(card);
2158 card->state = CARD_STATE_HARDSETUP;
2159 }
2160 if (card->state == CARD_STATE_HARDSETUP) {
2161 qeth_qdio_clear_card(card, 0);
2162 qeth_clear_qdio_buffers(card);
2163 qeth_clear_working_pool_list(card);
2164 card->state = CARD_STATE_DOWN;
2165 }
2166 if (card->state == CARD_STATE_DOWN) {
2167 qeth_clear_cmd_buffers(&card->read);
2168 qeth_clear_cmd_buffers(&card->write);
2169 }
2170 return rc;
2171}
2172
2173/*
2174 * test for and Switch promiscuous mode (on or off)
2175 * either for guestlan or HiperSocket Sniffer
2176 */
2177static void
2178qeth_l3_handle_promisc_mode(struct qeth_card *card)
2179{
2180 struct net_device *dev = card->dev;
2181
2182 if (((dev->flags & IFF_PROMISC) &&
2183 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2184 (!(dev->flags & IFF_PROMISC) &&
2185 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2186 return;
2187
2188 if (card->info.guestlan) { /* Guestlan trace */
2189 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2190 qeth_setadp_promisc_mode(card);
2191 } else if (card->options.sniffer && /* HiperSockets trace */
2192 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2193 if (dev->flags & IFF_PROMISC) {
2194 QETH_CARD_TEXT(card, 3, "+promisc");
2195 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2196 } else {
2197 QETH_CARD_TEXT(card, 3, "-promisc");
2198 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2199 }
2200 }
2201}
2202
2203static void qeth_l3_set_multicast_list(struct net_device *dev)
2204{
2205 struct qeth_card *card = dev->ml_priv;
2206
2207 QETH_CARD_TEXT(card, 3, "setmulti");
2208 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2209 (card->state != CARD_STATE_UP))
2210 return;
2211 if (!card->options.sniffer) {
2212 qeth_l3_delete_mc_addresses(card);
2213 qeth_l3_add_multicast_ipv4(card);
2214#ifdef CONFIG_QETH_IPV6
2215 qeth_l3_add_multicast_ipv6(card);
2216#endif
2217 qeth_l3_set_ip_addr_list(card);
2218 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2219 return;
2220 }
2221 qeth_l3_handle_promisc_mode(card);
2222}
2223
2224static const char *qeth_l3_arp_get_error_cause(int *rc)
2225{
2226 switch (*rc) {
2227 case QETH_IPA_ARP_RC_FAILED:
2228 *rc = -EIO;
2229 return "operation failed";
2230 case QETH_IPA_ARP_RC_NOTSUPP:
2231 *rc = -EOPNOTSUPP;
2232 return "operation not supported";
2233 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2234 *rc = -EINVAL;
2235 return "argument out of range";
2236 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2237 *rc = -EOPNOTSUPP;
2238 return "query operation not supported";
2239 case QETH_IPA_ARP_RC_Q_NO_DATA:
2240 *rc = -ENOENT;
2241 return "no query data available";
2242 default:
2243 return "unknown error";
2244 }
2245}
2246
2247static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2248{
2249 int tmp;
2250 int rc;
2251
2252 QETH_CARD_TEXT(card, 3, "arpstnoe");
2253
2254 /*
2255 * currently GuestLAN only supports the ARP assist function
2256 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2257 * thus we say EOPNOTSUPP for this ARP function
2258 */
2259 if (card->info.guestlan)
2260 return -EOPNOTSUPP;
2261 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2262 return -EOPNOTSUPP;
2263 }
2264 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2265 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2266 no_entries);
2267 if (rc) {
2268 tmp = rc;
2269 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2270 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2271 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2272 }
2273 return rc;
2274}
2275
2276static __u32 get_arp_entry_size(struct qeth_card *card,
2277 struct qeth_arp_query_data *qdata,
2278 struct qeth_arp_entrytype *type, __u8 strip_entries)
2279{
2280 __u32 rc;
2281 __u8 is_hsi;
2282
2283 is_hsi = qdata->reply_bits == 5;
2284 if (type->ip == QETHARP_IP_ADDR_V4) {
2285 QETH_CARD_TEXT(card, 4, "arpev4");
2286 if (strip_entries) {
2287 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2288 sizeof(struct qeth_arp_qi_entry7_short);
2289 } else {
2290 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2291 sizeof(struct qeth_arp_qi_entry7);
2292 }
2293 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2294 QETH_CARD_TEXT(card, 4, "arpev6");
2295 if (strip_entries) {
2296 rc = is_hsi ?
2297 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2298 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2299 } else {
2300 rc = is_hsi ?
2301 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2302 sizeof(struct qeth_arp_qi_entry7_ipv6);
2303 }
2304 } else {
2305 QETH_CARD_TEXT(card, 4, "arpinv");
2306 rc = 0;
2307 }
2308
2309 return rc;
2310}
2311
2312static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2313{
2314 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2315 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2316}
2317
2318static int qeth_l3_arp_query_cb(struct qeth_card *card,
2319 struct qeth_reply *reply, unsigned long data)
2320{
2321 struct qeth_ipa_cmd *cmd;
2322 struct qeth_arp_query_data *qdata;
2323 struct qeth_arp_query_info *qinfo;
2324 int i;
2325 int e;
2326 int entrybytes_done;
2327 int stripped_bytes;
2328 __u8 do_strip_entries;
2329
2330 QETH_CARD_TEXT(card, 3, "arpquecb");
2331
2332 qinfo = (struct qeth_arp_query_info *) reply->param;
2333 cmd = (struct qeth_ipa_cmd *) data;
2334 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2335 if (cmd->hdr.return_code) {
2336 QETH_CARD_TEXT(card, 4, "arpcberr");
2337 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2338 return 0;
2339 }
2340 if (cmd->data.setassparms.hdr.return_code) {
2341 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2342 QETH_CARD_TEXT(card, 4, "setaperr");
2343 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2344 return 0;
2345 }
2346 qdata = &cmd->data.setassparms.data.query_arp;
2347 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2348
2349 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2350 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2351 entrybytes_done = 0;
2352 for (e = 0; e < qdata->no_entries; ++e) {
2353 char *cur_entry;
2354 __u32 esize;
2355 struct qeth_arp_entrytype *etype;
2356
2357 cur_entry = &qdata->data + entrybytes_done;
2358 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2359 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2360 QETH_CARD_TEXT(card, 4, "pmis");
2361 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2362 break;
2363 }
2364 esize = get_arp_entry_size(card, qdata, etype,
2365 do_strip_entries);
2366 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2367 if (!esize)
2368 break;
2369
2370 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2371 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2372 cmd->hdr.return_code = IPA_RC_ENOMEM;
2373 goto out_error;
2374 }
2375
2376 memcpy(qinfo->udata + qinfo->udata_offset,
2377 &qdata->data + entrybytes_done + stripped_bytes,
2378 esize);
2379 entrybytes_done += esize + stripped_bytes;
2380 qinfo->udata_offset += esize;
2381 ++qinfo->no_entries;
2382 }
2383 /* check if all replies received ... */
2384 if (cmd->data.setassparms.hdr.seq_no <
2385 cmd->data.setassparms.hdr.number_of_replies)
2386 return 1;
2387 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2388 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2389 /* keep STRIP_ENTRIES flag so the user program can distinguish
2390 * stripped entries from normal ones */
2391 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2392 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2393 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2394 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2395 return 0;
2396out_error:
2397 i = 0;
2398 memcpy(qinfo->udata, &i, 4);
2399 return 0;
2400}
2401
2402static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2403 struct qeth_cmd_buffer *iob, int len,
2404 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2405 unsigned long),
2406 void *reply_param)
2407{
2408 QETH_CARD_TEXT(card, 4, "sendarp");
2409
2410 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2411 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2412 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2413 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2414 reply_cb, reply_param);
2415}
2416
2417static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2418 enum qeth_prot_versions prot,
2419 struct qeth_arp_query_info *qinfo)
2420{
2421 struct qeth_cmd_buffer *iob;
2422 struct qeth_ipa_cmd *cmd;
2423 int tmp;
2424 int rc;
2425
2426 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2427
2428 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2429 IPA_CMD_ASS_ARP_QUERY_INFO,
2430 sizeof(struct qeth_arp_query_data) - sizeof(char),
2431 prot);
2432 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2433 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2434 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2435 cmd->data.setassparms.data.query_arp.no_entries = 0;
2436 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2437 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2438 qeth_l3_arp_query_cb, (void *)qinfo);
2439 if (rc) {
2440 tmp = rc;
2441 QETH_DBF_MESSAGE(2,
2442 "Error while querying ARP cache on %s: %s "
2443 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2444 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2445 }
2446
2447 return rc;
2448}
2449
2450static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2451{
2452 struct qeth_arp_query_info qinfo = {0, };
2453 int rc;
2454
2455 QETH_CARD_TEXT(card, 3, "arpquery");
2456
2457 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2458 IPA_ARP_PROCESSING)) {
2459 QETH_CARD_TEXT(card, 3, "arpqnsup");
2460 rc = -EOPNOTSUPP;
2461 goto out;
2462 }
2463 /* get size of userspace buffer and mask_bits -> 6 bytes */
2464 if (copy_from_user(&qinfo, udata, 6)) {
2465 rc = -EFAULT;
2466 goto out;
2467 }
2468 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2469 if (!qinfo.udata) {
2470 rc = -ENOMEM;
2471 goto out;
2472 }
2473 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2474 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2475 if (rc) {
2476 if (copy_to_user(udata, qinfo.udata, 4))
2477 rc = -EFAULT;
2478 goto free_and_out;
2479 } else {
2480#ifdef CONFIG_QETH_IPV6
2481 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2482 /* fails in case of GuestLAN QDIO mode */
2483 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2484 &qinfo);
2485 }
2486#endif
2487 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2488 QETH_CARD_TEXT(card, 4, "qactf");
2489 rc = -EFAULT;
2490 goto free_and_out;
2491 }
2492 QETH_CARD_TEXT_(card, 4, "qacts");
2493 }
2494free_and_out:
2495 kfree(qinfo.udata);
2496out:
2497 return rc;
2498}
2499
2500static int qeth_l3_arp_add_entry(struct qeth_card *card,
2501 struct qeth_arp_cache_entry *entry)
2502{
2503 struct qeth_cmd_buffer *iob;
2504 char buf[16];
2505 int tmp;
2506 int rc;
2507
2508 QETH_CARD_TEXT(card, 3, "arpadent");
2509
2510 /*
2511 * currently GuestLAN only supports the ARP assist function
2512 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2513 * thus we say EOPNOTSUPP for this ARP function
2514 */
2515 if (card->info.guestlan)
2516 return -EOPNOTSUPP;
2517 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2518 return -EOPNOTSUPP;
2519 }
2520
2521 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2522 IPA_CMD_ASS_ARP_ADD_ENTRY,
2523 sizeof(struct qeth_arp_cache_entry),
2524 QETH_PROT_IPV4);
2525 rc = qeth_l3_send_setassparms(card, iob,
2526 sizeof(struct qeth_arp_cache_entry),
2527 (unsigned long) entry,
2528 qeth_l3_default_setassparms_cb, NULL);
2529 if (rc) {
2530 tmp = rc;
2531 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2532 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2533 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2534 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2535 }
2536 return rc;
2537}
2538
2539static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2540 struct qeth_arp_cache_entry *entry)
2541{
2542 struct qeth_cmd_buffer *iob;
2543 char buf[16] = {0, };
2544 int tmp;
2545 int rc;
2546
2547 QETH_CARD_TEXT(card, 3, "arprment");
2548
2549 /*
2550 * currently GuestLAN only supports the ARP assist function
2551 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2552 * thus we say EOPNOTSUPP for this ARP function
2553 */
2554 if (card->info.guestlan)
2555 return -EOPNOTSUPP;
2556 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2557 return -EOPNOTSUPP;
2558 }
2559 memcpy(buf, entry, 12);
2560 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2561 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2562 12,
2563 QETH_PROT_IPV4);
2564 rc = qeth_l3_send_setassparms(card, iob,
2565 12, (unsigned long)buf,
2566 qeth_l3_default_setassparms_cb, NULL);
2567 if (rc) {
2568 tmp = rc;
2569 memset(buf, 0, 16);
2570 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2571 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2572 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2573 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2574 }
2575 return rc;
2576}
2577
2578static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2579{
2580 int rc;
2581 int tmp;
2582
2583 QETH_CARD_TEXT(card, 3, "arpflush");
2584
2585 /*
2586 * currently GuestLAN only supports the ARP assist function
2587 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2588 * thus we say EOPNOTSUPP for this ARP function
2589 */
2590 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2591 return -EOPNOTSUPP;
2592 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2593 return -EOPNOTSUPP;
2594 }
2595 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2596 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2597 if (rc) {
2598 tmp = rc;
2599 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2600 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2601 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2602 }
2603 return rc;
2604}
2605
2606static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2607{
2608 struct qeth_card *card = dev->ml_priv;
2609 struct qeth_arp_cache_entry arp_entry;
2610 struct mii_ioctl_data *mii_data;
2611 int rc = 0;
2612
2613 if (!card)
2614 return -ENODEV;
2615
2616 if ((card->state != CARD_STATE_UP) &&
2617 (card->state != CARD_STATE_SOFTSETUP))
2618 return -ENODEV;
2619
2620 switch (cmd) {
2621 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2622 if (!capable(CAP_NET_ADMIN)) {
2623 rc = -EPERM;
2624 break;
2625 }
2626 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2627 break;
2628 case SIOC_QETH_ARP_QUERY_INFO:
2629 if (!capable(CAP_NET_ADMIN)) {
2630 rc = -EPERM;
2631 break;
2632 }
2633 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2634 break;
2635 case SIOC_QETH_ARP_ADD_ENTRY:
2636 if (!capable(CAP_NET_ADMIN)) {
2637 rc = -EPERM;
2638 break;
2639 }
2640 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2641 sizeof(struct qeth_arp_cache_entry)))
2642 rc = -EFAULT;
2643 else
2644 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2645 break;
2646 case SIOC_QETH_ARP_REMOVE_ENTRY:
2647 if (!capable(CAP_NET_ADMIN)) {
2648 rc = -EPERM;
2649 break;
2650 }
2651 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2652 sizeof(struct qeth_arp_cache_entry)))
2653 rc = -EFAULT;
2654 else
2655 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2656 break;
2657 case SIOC_QETH_ARP_FLUSH_CACHE:
2658 if (!capable(CAP_NET_ADMIN)) {
2659 rc = -EPERM;
2660 break;
2661 }
2662 rc = qeth_l3_arp_flush_cache(card);
2663 break;
2664 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2665 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2666 break;
2667 case SIOC_QETH_GET_CARD_TYPE:
2668 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2669 card->info.type == QETH_CARD_TYPE_OSX) &&
2670 !card->info.guestlan)
2671 return 1;
2672 return 0;
2673 break;
2674 case SIOCGMIIPHY:
2675 mii_data = if_mii(rq);
2676 mii_data->phy_id = 0;
2677 break;
2678 case SIOCGMIIREG:
2679 mii_data = if_mii(rq);
2680 if (mii_data->phy_id != 0)
2681 rc = -EINVAL;
2682 else
2683 mii_data->val_out = qeth_mdio_read(dev,
2684 mii_data->phy_id,
2685 mii_data->reg_num);
2686 break;
2687 case SIOC_QETH_QUERY_OAT:
2688 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2689 break;
2690 default:
2691 rc = -EOPNOTSUPP;
2692 }
2693 if (rc)
2694 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2695 return rc;
2696}
2697
2698int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2699{
2700 int cast_type = RTN_UNSPEC;
2701 struct neighbour *n = NULL;
2702 struct dst_entry *dst;
2703
2704 rcu_read_lock();
2705 dst = skb_dst(skb);
2706 if (dst)
2707 n = dst_get_neighbour_noref(dst);
2708 if (n) {
2709 cast_type = n->type;
2710 rcu_read_unlock();
2711 if ((cast_type == RTN_BROADCAST) ||
2712 (cast_type == RTN_MULTICAST) ||
2713 (cast_type == RTN_ANYCAST))
2714 return cast_type;
2715 else
2716 return RTN_UNSPEC;
2717 }
2718 rcu_read_unlock();
2719
2720 /* try something else */
2721 if (skb->protocol == ETH_P_IPV6)
2722 return (skb_network_header(skb)[24] == 0xff) ?
2723 RTN_MULTICAST : 0;
2724 else if (skb->protocol == ETH_P_IP)
2725 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2726 RTN_MULTICAST : 0;
2727 /* ... */
2728 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2729 return RTN_BROADCAST;
2730 else {
2731 u16 hdr_mac;
2732
2733 hdr_mac = *((u16 *)skb->data);
2734 /* tr multicast? */
2735 switch (card->info.link_type) {
2736 case QETH_LINK_TYPE_HSTR:
2737 case QETH_LINK_TYPE_LANE_TR:
2738 if ((hdr_mac == QETH_TR_MAC_NC) ||
2739 (hdr_mac == QETH_TR_MAC_C))
2740 return RTN_MULTICAST;
2741 break;
2742 /* eth or so multicast? */
2743 default:
2744 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2745 (hdr_mac == QETH_ETH_MAC_V6))
2746 return RTN_MULTICAST;
2747 }
2748 }
2749 return cast_type;
2750}
2751
2752static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2753 struct qeth_hdr *hdr, struct sk_buff *skb)
2754{
2755 char daddr[16];
2756 struct af_iucv_trans_hdr *iucv_hdr;
2757
2758 skb_pull(skb, 14);
2759 card->dev->header_ops->create(skb, card->dev, 0,
2760 card->dev->dev_addr, card->dev->dev_addr,
2761 card->dev->addr_len);
2762 skb_pull(skb, 14);
2763 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2764 memset(hdr, 0, sizeof(struct qeth_hdr));
2765 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2766 hdr->hdr.l3.ext_flags = 0;
2767 hdr->hdr.l3.length = skb->len;
2768 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2769 memset(daddr, 0, sizeof(daddr));
2770 daddr[0] = 0xfe;
2771 daddr[1] = 0x80;
2772 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2773 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2774}
2775
2776static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2777 struct sk_buff *skb, int ipv, int cast_type)
2778{
2779 struct dst_entry *dst;
2780
2781 memset(hdr, 0, sizeof(struct qeth_hdr));
2782 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2783 hdr->hdr.l3.ext_flags = 0;
2784
2785 /*
2786 * before we're going to overwrite this location with next hop ip.
2787 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2788 */
2789 if (vlan_tx_tag_present(skb)) {
2790 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2791 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2792 else
2793 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2794 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2795 }
2796
2797 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2798
2799 rcu_read_lock();
2800 dst = skb_dst(skb);
2801 if (ipv == 4) {
2802 struct rtable *rt = (struct rtable *) dst;
2803 __be32 *pkey = &ip_hdr(skb)->daddr;
2804
2805 if (rt->rt_gateway)
2806 pkey = &rt->rt_gateway;
2807
2808 /* IPv4 */
2809 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2810 memset(hdr->hdr.l3.dest_addr, 0, 12);
2811 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2812 } else if (ipv == 6) {
2813 struct rt6_info *rt = (struct rt6_info *) dst;
2814 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2815
2816 if (!ipv6_addr_any(&rt->rt6i_gateway))
2817 pkey = &rt->rt6i_gateway;
2818
2819 /* IPv6 */
2820 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2821 if (card->info.type == QETH_CARD_TYPE_IQD)
2822 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2823 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2824 } else {
2825 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2826 skb->dev->broadcast, 6)) {
2827 /* broadcast? */
2828 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2829 QETH_HDR_PASSTHRU;
2830 } else {
2831 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2832 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2833 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2834 }
2835 }
2836 rcu_read_unlock();
2837}
2838
2839static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2840 struct qeth_hdr *hdr, struct sk_buff *skb)
2841{
2842 struct iphdr *iph = ip_hdr(skb);
2843
2844 /* tcph->check contains already the pseudo hdr checksum
2845 * so just set the header flags
2846 */
2847 if (iph->protocol == IPPROTO_UDP)
2848 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2849 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2850 QETH_HDR_EXT_CSUM_HDR_REQ;
2851 iph->check = 0;
2852 if (card->options.performance_stats)
2853 card->perf_stats.tx_csum++;
2854}
2855
2856static void qeth_tso_fill_header(struct qeth_card *card,
2857 struct qeth_hdr *qhdr, struct sk_buff *skb)
2858{
2859 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2860 struct tcphdr *tcph = tcp_hdr(skb);
2861 struct iphdr *iph = ip_hdr(skb);
2862 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2863
2864 /*fix header to TSO values ...*/
2865 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2866 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2867 /*set values which are fix for the first approach ...*/
2868 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2869 hdr->ext.imb_hdr_no = 1;
2870 hdr->ext.hdr_type = 1;
2871 hdr->ext.hdr_version = 1;
2872 hdr->ext.hdr_len = 28;
2873 /*insert non-fix values */
2874 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2875 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2876 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2877 sizeof(struct qeth_hdr_tso));
2878 tcph->check = 0;
2879 if (skb->protocol == ETH_P_IPV6) {
2880 ip6h->payload_len = 0;
2881 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2882 0, IPPROTO_TCP, 0);
2883 } else {
2884 /*OSA want us to set these values ...*/
2885 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2886 0, IPPROTO_TCP, 0);
2887 iph->tot_len = 0;
2888 iph->check = 0;
2889 }
2890}
2891
2892static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2893{
2894 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2895 tcp_hdr(skb)->doff * 4;
2896 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2897 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2898 elements += skb_shinfo(skb)->nr_frags;
2899 return elements;
2900}
2901
2902static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2903{
2904 int rc;
2905 u16 *tag;
2906 struct qeth_hdr *hdr = NULL;
2907 int elements_needed = 0;
2908 int elems;
2909 struct qeth_card *card = dev->ml_priv;
2910 struct sk_buff *new_skb = NULL;
2911 int ipv = qeth_get_ip_version(skb);
2912 int cast_type = qeth_l3_get_cast_type(card, skb);
2913 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2914 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2915 int tx_bytes = skb->len;
2916 bool large_send;
2917 int data_offset = -1;
2918 int nr_frags;
2919
2920 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2921 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2922 ((card->options.cq == QETH_CQ_ENABLED) &&
2923 (skb->protocol != ETH_P_AF_IUCV)))) ||
2924 card->options.sniffer)
2925 goto tx_drop;
2926
2927 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2928 card->stats.tx_carrier_errors++;
2929 goto tx_drop;
2930 }
2931
2932 if ((cast_type == RTN_BROADCAST) &&
2933 (card->info.broadcast_capable == 0))
2934 goto tx_drop;
2935
2936 if (card->options.performance_stats) {
2937 card->perf_stats.outbound_cnt++;
2938 card->perf_stats.outbound_start_time = qeth_get_micros();
2939 }
2940
2941 large_send = skb_is_gso(skb);
2942
2943 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2944 (skb_shinfo(skb)->nr_frags == 0)) {
2945 new_skb = skb;
2946 if (new_skb->protocol == ETH_P_AF_IUCV)
2947 data_offset = 0;
2948 else
2949 data_offset = ETH_HLEN;
2950 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2951 if (!hdr)
2952 goto tx_drop;
2953 elements_needed++;
2954 } else {
2955 /* create a clone with writeable headroom */
2956 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2957 + VLAN_HLEN);
2958 if (!new_skb)
2959 goto tx_drop;
2960 }
2961
2962 if (card->info.type == QETH_CARD_TYPE_IQD) {
2963 if (data_offset < 0)
2964 skb_pull(new_skb, ETH_HLEN);
2965 } else {
2966 if (ipv == 4) {
2967 skb_pull(new_skb, ETH_HLEN);
2968 }
2969
2970 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2971 skb_push(new_skb, VLAN_HLEN);
2972 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2973 skb_copy_to_linear_data_offset(new_skb, 4,
2974 new_skb->data + 8, 4);
2975 skb_copy_to_linear_data_offset(new_skb, 8,
2976 new_skb->data + 12, 4);
2977 tag = (u16 *)(new_skb->data + 12);
2978 *tag = __constant_htons(ETH_P_8021Q);
2979 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2980 }
2981 }
2982
2983 netif_stop_queue(dev);
2984
2985 /* fix hardware limitation: as long as we do not have sbal
2986 * chaining we can not send long frag lists
2987 */
2988 if (large_send) {
2989 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2990 if (skb_linearize(new_skb))
2991 goto tx_drop;
2992 if (card->options.performance_stats)
2993 card->perf_stats.tx_lin++;
2994 }
2995 }
2996
2997 if (large_send && (cast_type == RTN_UNSPEC)) {
2998 hdr = (struct qeth_hdr *)skb_push(new_skb,
2999 sizeof(struct qeth_hdr_tso));
3000 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3001 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3002 qeth_tso_fill_header(card, hdr, new_skb);
3003 elements_needed++;
3004 } else {
3005 if (data_offset < 0) {
3006 hdr = (struct qeth_hdr *)skb_push(new_skb,
3007 sizeof(struct qeth_hdr));
3008 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3009 cast_type);
3010 } else {
3011 if (new_skb->protocol == ETH_P_AF_IUCV)
3012 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3013 else {
3014 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3015 cast_type);
3016 hdr->hdr.l3.length = new_skb->len - data_offset;
3017 }
3018 }
3019
3020 if (skb->ip_summed == CHECKSUM_PARTIAL)
3021 qeth_l3_hdr_csum(card, hdr, new_skb);
3022 }
3023
3024 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3025 elements_needed);
3026 if (!elems) {
3027 if (data_offset >= 0)
3028 kmem_cache_free(qeth_core_header_cache, hdr);
3029 goto tx_drop;
3030 }
3031 elements_needed += elems;
3032 nr_frags = skb_shinfo(new_skb)->nr_frags;
3033
3034 if (card->info.type != QETH_CARD_TYPE_IQD) {
3035 int len;
3036 if (large_send)
3037 len = ((unsigned long)tcp_hdr(new_skb) +
3038 tcp_hdr(new_skb)->doff * 4) -
3039 (unsigned long)new_skb->data;
3040 else
3041 len = sizeof(struct qeth_hdr_layer3);
3042
3043 if (qeth_hdr_chk_and_bounce(new_skb, len))
3044 goto tx_drop;
3045 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3046 elements_needed);
3047 } else
3048 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3049 elements_needed, data_offset, 0);
3050
3051 if (!rc) {
3052 card->stats.tx_packets++;
3053 card->stats.tx_bytes += tx_bytes;
3054 if (new_skb != skb)
3055 dev_kfree_skb_any(skb);
3056 if (card->options.performance_stats) {
3057 if (large_send) {
3058 card->perf_stats.large_send_bytes += tx_bytes;
3059 card->perf_stats.large_send_cnt++;
3060 }
3061 if (nr_frags) {
3062 card->perf_stats.sg_skbs_sent++;
3063 /* nr_frags + skb->data */
3064 card->perf_stats.sg_frags_sent += nr_frags + 1;
3065 }
3066 }
3067 rc = NETDEV_TX_OK;
3068 } else {
3069 if (data_offset >= 0)
3070 kmem_cache_free(qeth_core_header_cache, hdr);
3071
3072 if (rc == -EBUSY) {
3073 if (new_skb != skb)
3074 dev_kfree_skb_any(new_skb);
3075 return NETDEV_TX_BUSY;
3076 } else
3077 goto tx_drop;
3078 }
3079
3080 netif_wake_queue(dev);
3081 if (card->options.performance_stats)
3082 card->perf_stats.outbound_time += qeth_get_micros() -
3083 card->perf_stats.outbound_start_time;
3084 return rc;
3085
3086tx_drop:
3087 card->stats.tx_dropped++;
3088 card->stats.tx_errors++;
3089 if ((new_skb != skb) && new_skb)
3090 dev_kfree_skb_any(new_skb);
3091 dev_kfree_skb_any(skb);
3092 netif_wake_queue(dev);
3093 return NETDEV_TX_OK;
3094}
3095
3096static int __qeth_l3_open(struct net_device *dev)
3097{
3098 struct qeth_card *card = dev->ml_priv;
3099 int rc = 0;
3100
3101 QETH_CARD_TEXT(card, 4, "qethopen");
3102 if (card->state == CARD_STATE_UP)
3103 return rc;
3104 if (card->state != CARD_STATE_SOFTSETUP)
3105 return -ENODEV;
3106 card->data.state = CH_STATE_UP;
3107 card->state = CARD_STATE_UP;
3108 netif_start_queue(dev);
3109
3110 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3111 napi_enable(&card->napi);
3112 napi_schedule(&card->napi);
3113 } else
3114 rc = -EIO;
3115 return rc;
3116}
3117
3118static int qeth_l3_open(struct net_device *dev)
3119{
3120 struct qeth_card *card = dev->ml_priv;
3121
3122 QETH_CARD_TEXT(card, 5, "qethope_");
3123 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3124 QETH_CARD_TEXT(card, 3, "openREC");
3125 return -ERESTARTSYS;
3126 }
3127 return __qeth_l3_open(dev);
3128}
3129
3130static int qeth_l3_stop(struct net_device *dev)
3131{
3132 struct qeth_card *card = dev->ml_priv;
3133
3134 QETH_CARD_TEXT(card, 4, "qethstop");
3135 netif_tx_disable(dev);
3136 if (card->state == CARD_STATE_UP) {
3137 card->state = CARD_STATE_SOFTSETUP;
3138 napi_disable(&card->napi);
3139 }
3140 return 0;
3141}
3142
3143static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3144 netdev_features_t features)
3145{
3146 struct qeth_card *card = dev->ml_priv;
3147
3148 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3149 features &= ~NETIF_F_IP_CSUM;
3150 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3151 features &= ~NETIF_F_TSO;
3152 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3153 features &= ~NETIF_F_RXCSUM;
3154
3155 return features;
3156}
3157
3158static int qeth_l3_set_features(struct net_device *dev,
3159 netdev_features_t features)
3160{
3161 struct qeth_card *card = dev->ml_priv;
3162 u32 changed = dev->features ^ features;
3163 int err;
3164
3165 if (!(changed & NETIF_F_RXCSUM))
3166 return 0;
3167
3168 if (card->state == CARD_STATE_DOWN ||
3169 card->state == CARD_STATE_RECOVER)
3170 return 0;
3171
3172 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3173 if (err)
3174 dev->features = features ^ NETIF_F_RXCSUM;
3175
3176 return err;
3177}
3178
3179static const struct ethtool_ops qeth_l3_ethtool_ops = {
3180 .get_link = ethtool_op_get_link,
3181 .get_strings = qeth_core_get_strings,
3182 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3183 .get_sset_count = qeth_core_get_sset_count,
3184 .get_drvinfo = qeth_core_get_drvinfo,
3185 .get_settings = qeth_core_ethtool_get_settings,
3186};
3187
3188/*
3189 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3190 * NOARP on the netdevice is no option because it also turns off neighbor
3191 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3192 * arp resolution but we want the hard header (packet socket will work
3193 * e.g. tcpdump)
3194 */
3195static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3196{
3197 n->nud_state = NUD_NOARP;
3198 memcpy(n->ha, "FAKELL", 6);
3199 n->output = n->ops->connected_output;
3200 return 0;
3201}
3202
3203static int
3204qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3205{
3206 if (np->tbl->family == AF_INET)
3207 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3208
3209 return 0;
3210}
3211
3212static const struct net_device_ops qeth_l3_netdev_ops = {
3213 .ndo_open = qeth_l3_open,
3214 .ndo_stop = qeth_l3_stop,
3215 .ndo_get_stats = qeth_get_stats,
3216 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3217 .ndo_validate_addr = eth_validate_addr,
3218 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3219 .ndo_do_ioctl = qeth_l3_do_ioctl,
3220 .ndo_change_mtu = qeth_change_mtu,
3221 .ndo_fix_features = qeth_l3_fix_features,
3222 .ndo_set_features = qeth_l3_set_features,
3223 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3224 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3225 .ndo_tx_timeout = qeth_tx_timeout,
3226};
3227
3228static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3229 .ndo_open = qeth_l3_open,
3230 .ndo_stop = qeth_l3_stop,
3231 .ndo_get_stats = qeth_get_stats,
3232 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3233 .ndo_validate_addr = eth_validate_addr,
3234 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3235 .ndo_do_ioctl = qeth_l3_do_ioctl,
3236 .ndo_change_mtu = qeth_change_mtu,
3237 .ndo_fix_features = qeth_l3_fix_features,
3238 .ndo_set_features = qeth_l3_set_features,
3239 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3240 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3241 .ndo_tx_timeout = qeth_tx_timeout,
3242 .ndo_neigh_setup = qeth_l3_neigh_setup,
3243};
3244
3245static int qeth_l3_setup_netdev(struct qeth_card *card)
3246{
3247 if (card->info.type == QETH_CARD_TYPE_OSD ||
3248 card->info.type == QETH_CARD_TYPE_OSX) {
3249 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3250 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3251 pr_info("qeth_l3: ignoring TR device\n");
3252 return -ENODEV;
3253 } else {
3254 card->dev = alloc_etherdev(0);
3255 if (!card->dev)
3256 return -ENODEV;
3257 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3258
3259 /*IPv6 address autoconfiguration stuff*/
3260 qeth_l3_get_unique_id(card);
3261 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3262 card->dev->dev_id = card->info.unique_id &
3263 0xffff;
3264 if (!card->info.guestlan) {
3265 card->dev->hw_features = NETIF_F_SG |
3266 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3267 NETIF_F_TSO;
3268 card->dev->features = NETIF_F_RXCSUM;
3269 }
3270 }
3271 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3272 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3273 if (!card->dev)
3274 return -ENODEV;
3275 card->dev->flags |= IFF_NOARP;
3276 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3277 qeth_l3_iqd_read_initial_mac(card);
3278 if (card->options.hsuid[0])
3279 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3280 } else
3281 return -ENODEV;
3282
3283 card->dev->ml_priv = card;
3284 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3285 card->dev->mtu = card->info.initial_mtu;
3286 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3287 card->dev->features |= NETIF_F_HW_VLAN_TX |
3288 NETIF_F_HW_VLAN_RX |
3289 NETIF_F_HW_VLAN_FILTER;
3290 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3291 card->dev->gso_max_size = 15 * PAGE_SIZE;
3292
3293 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3294 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3295 return register_netdev(card->dev);
3296}
3297
3298static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3299{
3300 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3301
3302 qeth_l3_create_device_attributes(&gdev->dev);
3303 card->options.layer2 = 0;
3304 card->info.hwtrap = 0;
3305 return 0;
3306}
3307
3308static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3309{
3310 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3311
3312 qeth_l3_remove_device_attributes(&cgdev->dev);
3313
3314 qeth_set_allowed_threads(card, 0, 1);
3315 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3316
3317 if (cgdev->state == CCWGROUP_ONLINE)
3318 qeth_l3_set_offline(cgdev);
3319
3320 if (card->dev) {
3321 unregister_netdev(card->dev);
3322 card->dev = NULL;
3323 }
3324
3325 qeth_l3_clear_ip_list(card, 0);
3326 qeth_l3_clear_ipato_list(card);
3327 return;
3328}
3329
3330static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3331{
3332 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3333 int rc = 0;
3334 enum qeth_card_states recover_flag;
3335
3336 BUG_ON(!card);
3337 mutex_lock(&card->discipline_mutex);
3338 mutex_lock(&card->conf_mutex);
3339 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3340 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3341
3342 recover_flag = card->state;
3343 rc = qeth_core_hardsetup_card(card);
3344 if (rc) {
3345 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3346 rc = -ENODEV;
3347 goto out_remove;
3348 }
3349
3350 if (!card->dev && qeth_l3_setup_netdev(card)) {
3351 rc = -ENODEV;
3352 goto out_remove;
3353 }
3354
3355 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3356 if (card->info.hwtrap &&
3357 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3358 card->info.hwtrap = 0;
3359 } else
3360 card->info.hwtrap = 0;
3361
3362 card->state = CARD_STATE_HARDSETUP;
3363 memset(&card->rx, 0, sizeof(struct qeth_rx));
3364 qeth_print_status_message(card);
3365
3366 /* softsetup */
3367 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3368
3369 rc = qeth_send_startlan(card);
3370 if (rc) {
3371 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3372 if (rc == 0xe080) {
3373 dev_warn(&card->gdev->dev,
3374 "The LAN is offline\n");
3375 card->lan_online = 0;
3376 goto contin;
3377 }
3378 rc = -ENODEV;
3379 goto out_remove;
3380 } else
3381 card->lan_online = 1;
3382
3383contin:
3384 rc = qeth_l3_setadapter_parms(card);
3385 if (rc)
3386 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3387 if (!card->options.sniffer) {
3388 rc = qeth_l3_start_ipassists(card);
3389 if (rc)
3390 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3391 rc = qeth_l3_setrouting_v4(card);
3392 if (rc)
3393 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3394 rc = qeth_l3_setrouting_v6(card);
3395 if (rc)
3396 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3397 }
3398 netif_tx_disable(card->dev);
3399
3400 rc = qeth_init_qdio_queues(card);
3401 if (rc) {
3402 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3403 rc = -ENODEV;
3404 goto out_remove;
3405 }
3406 card->state = CARD_STATE_SOFTSETUP;
3407
3408 qeth_set_allowed_threads(card, 0xffffffff, 0);
3409 qeth_l3_set_ip_addr_list(card);
3410 if (card->lan_online)
3411 netif_carrier_on(card->dev);
3412 else
3413 netif_carrier_off(card->dev);
3414 if (recover_flag == CARD_STATE_RECOVER) {
3415 rtnl_lock();
3416 if (recovery_mode)
3417 __qeth_l3_open(card->dev);
3418 else
3419 dev_open(card->dev);
3420 qeth_l3_set_multicast_list(card->dev);
3421 rtnl_unlock();
3422 }
3423 /* let user_space know that device is online */
3424 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3425 mutex_unlock(&card->conf_mutex);
3426 mutex_unlock(&card->discipline_mutex);
3427 return 0;
3428out_remove:
3429 qeth_l3_stop_card(card, 0);
3430 ccw_device_set_offline(CARD_DDEV(card));
3431 ccw_device_set_offline(CARD_WDEV(card));
3432 ccw_device_set_offline(CARD_RDEV(card));
3433 if (recover_flag == CARD_STATE_RECOVER)
3434 card->state = CARD_STATE_RECOVER;
3435 else
3436 card->state = CARD_STATE_DOWN;
3437 mutex_unlock(&card->conf_mutex);
3438 mutex_unlock(&card->discipline_mutex);
3439 return rc;
3440}
3441
3442static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3443{
3444 return __qeth_l3_set_online(gdev, 0);
3445}
3446
3447static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3448 int recovery_mode)
3449{
3450 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3451 int rc = 0, rc2 = 0, rc3 = 0;
3452 enum qeth_card_states recover_flag;
3453
3454 mutex_lock(&card->discipline_mutex);
3455 mutex_lock(&card->conf_mutex);
3456 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3457 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3458
3459 if (card->dev && netif_carrier_ok(card->dev))
3460 netif_carrier_off(card->dev);
3461 recover_flag = card->state;
3462 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3463 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3464 card->info.hwtrap = 1;
3465 }
3466 qeth_l3_stop_card(card, recovery_mode);
3467 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3468 rtnl_lock();
3469 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3470 rtnl_unlock();
3471 }
3472 rc = ccw_device_set_offline(CARD_DDEV(card));
3473 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3474 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3475 if (!rc)
3476 rc = (rc2) ? rc2 : rc3;
3477 if (rc)
3478 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3479 if (recover_flag == CARD_STATE_UP)
3480 card->state = CARD_STATE_RECOVER;
3481 /* let user_space know that device is offline */
3482 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3483 mutex_unlock(&card->conf_mutex);
3484 mutex_unlock(&card->discipline_mutex);
3485 return 0;
3486}
3487
3488static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3489{
3490 return __qeth_l3_set_offline(cgdev, 0);
3491}
3492
3493static int qeth_l3_recover(void *ptr)
3494{
3495 struct qeth_card *card;
3496 int rc = 0;
3497
3498 card = (struct qeth_card *) ptr;
3499 QETH_CARD_TEXT(card, 2, "recover1");
3500 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3501 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3502 return 0;
3503 QETH_CARD_TEXT(card, 2, "recover2");
3504 dev_warn(&card->gdev->dev,
3505 "A recovery process has been started for the device\n");
3506 __qeth_l3_set_offline(card->gdev, 1);
3507 rc = __qeth_l3_set_online(card->gdev, 1);
3508 if (!rc)
3509 dev_info(&card->gdev->dev,
3510 "Device successfully recovered!\n");
3511 else {
3512 rtnl_lock();
3513 dev_close(card->dev);
3514 rtnl_unlock();
3515 dev_warn(&card->gdev->dev, "The qeth device driver "
3516 "failed to recover an error on the device\n");
3517 }
3518 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3519 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3520 return 0;
3521}
3522
3523static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3524{
3525 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3526 qeth_set_allowed_threads(card, 0, 1);
3527 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3528 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3529 qeth_qdio_clear_card(card, 0);
3530 qeth_clear_qdio_buffers(card);
3531}
3532
3533static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3534{
3535 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3536
3537 if (card->dev)
3538 netif_device_detach(card->dev);
3539 qeth_set_allowed_threads(card, 0, 1);
3540 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3541 if (gdev->state == CCWGROUP_OFFLINE)
3542 return 0;
3543 if (card->state == CARD_STATE_UP) {
3544 if (card->info.hwtrap)
3545 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3546 __qeth_l3_set_offline(card->gdev, 1);
3547 } else
3548 __qeth_l3_set_offline(card->gdev, 0);
3549 return 0;
3550}
3551
3552static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3553{
3554 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3555 int rc = 0;
3556
3557 if (gdev->state == CCWGROUP_OFFLINE)
3558 goto out;
3559
3560 if (card->state == CARD_STATE_RECOVER) {
3561 rc = __qeth_l3_set_online(card->gdev, 1);
3562 if (rc) {
3563 rtnl_lock();
3564 dev_close(card->dev);
3565 rtnl_unlock();
3566 }
3567 } else
3568 rc = __qeth_l3_set_online(card->gdev, 0);
3569out:
3570 qeth_set_allowed_threads(card, 0xffffffff, 0);
3571 if (card->dev)
3572 netif_device_attach(card->dev);
3573 if (rc)
3574 dev_warn(&card->gdev->dev, "The qeth device driver "
3575 "failed to recover an error on the device\n");
3576 return rc;
3577}
3578
3579struct qeth_discipline qeth_l3_discipline = {
3580 .start_poll = qeth_qdio_start_poll,
3581 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3582 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3583 .recover = qeth_l3_recover,
3584 .setup = qeth_l3_probe_device,
3585 .remove = qeth_l3_remove_device,
3586 .set_online = qeth_l3_set_online,
3587 .set_offline = qeth_l3_set_offline,
3588 .shutdown = qeth_l3_shutdown,
3589 .freeze = qeth_l3_pm_suspend,
3590 .thaw = qeth_l3_pm_resume,
3591 .restore = qeth_l3_pm_resume,
3592};
3593EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3594
3595static int qeth_l3_ip_event(struct notifier_block *this,
3596 unsigned long event, void *ptr)
3597{
3598 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3599 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3600 struct qeth_ipaddr *addr;
3601 struct qeth_card *card;
3602
3603 if (dev_net(dev) != &init_net)
3604 return NOTIFY_DONE;
3605
3606 card = qeth_l3_get_card_from_dev(dev);
3607 if (!card)
3608 return NOTIFY_DONE;
3609 QETH_CARD_TEXT(card, 3, "ipevent");
3610
3611 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3612 if (addr != NULL) {
3613 addr->u.a4.addr = ifa->ifa_address;
3614 addr->u.a4.mask = ifa->ifa_mask;
3615 addr->type = QETH_IP_TYPE_NORMAL;
3616 } else
3617 goto out;
3618
3619 switch (event) {
3620 case NETDEV_UP:
3621 if (!qeth_l3_add_ip(card, addr))
3622 kfree(addr);
3623 break;
3624 case NETDEV_DOWN:
3625 if (!qeth_l3_delete_ip(card, addr))
3626 kfree(addr);
3627 break;
3628 default:
3629 break;
3630 }
3631 qeth_l3_set_ip_addr_list(card);
3632out:
3633 return NOTIFY_DONE;
3634}
3635
3636static struct notifier_block qeth_l3_ip_notifier = {
3637 qeth_l3_ip_event,
3638 NULL,
3639};
3640
3641#ifdef CONFIG_QETH_IPV6
3642/**
3643 * IPv6 event handler
3644 */
3645static int qeth_l3_ip6_event(struct notifier_block *this,
3646 unsigned long event, void *ptr)
3647{
3648 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3649 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3650 struct qeth_ipaddr *addr;
3651 struct qeth_card *card;
3652
3653 card = qeth_l3_get_card_from_dev(dev);
3654 if (!card)
3655 return NOTIFY_DONE;
3656 QETH_CARD_TEXT(card, 3, "ip6event");
3657 if (!qeth_is_supported(card, IPA_IPV6))
3658 return NOTIFY_DONE;
3659
3660 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3661 if (addr != NULL) {
3662 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3663 addr->u.a6.pfxlen = ifa->prefix_len;
3664 addr->type = QETH_IP_TYPE_NORMAL;
3665 } else
3666 goto out;
3667
3668 switch (event) {
3669 case NETDEV_UP:
3670 if (!qeth_l3_add_ip(card, addr))
3671 kfree(addr);
3672 break;
3673 case NETDEV_DOWN:
3674 if (!qeth_l3_delete_ip(card, addr))
3675 kfree(addr);
3676 break;
3677 default:
3678 break;
3679 }
3680 qeth_l3_set_ip_addr_list(card);
3681out:
3682 return NOTIFY_DONE;
3683}
3684
3685static struct notifier_block qeth_l3_ip6_notifier = {
3686 qeth_l3_ip6_event,
3687 NULL,
3688};
3689#endif
3690
3691static int qeth_l3_register_notifiers(void)
3692{
3693 int rc;
3694
3695 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3696 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3697 if (rc)
3698 return rc;
3699#ifdef CONFIG_QETH_IPV6
3700 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3701 if (rc) {
3702 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3703 return rc;
3704 }
3705#else
3706 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3707#endif
3708 return 0;
3709}
3710
3711static void qeth_l3_unregister_notifiers(void)
3712{
3713
3714 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3715 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3716#ifdef CONFIG_QETH_IPV6
3717 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3718#endif /* QETH_IPV6 */
3719}
3720
3721static int __init qeth_l3_init(void)
3722{
3723 int rc = 0;
3724
3725 pr_info("register layer 3 discipline\n");
3726 rc = qeth_l3_register_notifiers();
3727 return rc;
3728}
3729
3730static void __exit qeth_l3_exit(void)
3731{
3732 qeth_l3_unregister_notifiers();
3733 pr_info("unregister layer 3 discipline\n");
3734}
3735
3736module_init(qeth_l3_init);
3737module_exit(qeth_l3_exit);
3738MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3739MODULE_DESCRIPTION("qeth layer 3 discipline");
3740MODULE_LICENSE("GPL");