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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 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9#define KMSG_COMPONENT "qeth"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/bitops.h>
15#include <linux/string.h>
16#include <linux/errno.h>
17#include <linux/kernel.h>
18#include <linux/etherdevice.h>
19#include <linux/mii.h>
20#include <linux/ip.h>
21#include <linux/ipv6.h>
22#include <linux/inetdevice.h>
23#include <linux/igmp.h>
24#include <linux/slab.h>
25#include <linux/if_vlan.h>
26
27#include <net/ip.h>
28#include <net/arp.h>
29#include <net/route.h>
30#include <net/ip6_fib.h>
31#include <net/ip6_checksum.h>
32#include <net/iucv/af_iucv.h>
33
34#include "qeth_l3.h"
35
36
37static int qeth_l3_set_offline(struct ccwgroup_device *);
38static int qeth_l3_recover(void *);
39static int qeth_l3_stop(struct net_device *);
40static void qeth_l3_set_multicast_list(struct net_device *);
41static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
42static int qeth_l3_register_addr_entry(struct qeth_card *,
43 struct qeth_ipaddr *);
44static int qeth_l3_deregister_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46static int __qeth_l3_set_online(struct ccwgroup_device *, int);
47static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
48
49static int qeth_l3_isxdigit(char *buf)
50{
51 while (*buf) {
52 if (!isxdigit(*buf++))
53 return 0;
54 }
55 return 1;
56}
57
58void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
59{
60 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
61}
62
63int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
64{
65 int count = 0, rc = 0;
66 int in[4];
67 char c;
68
69 rc = sscanf(buf, "%u.%u.%u.%u%c",
70 &in[0], &in[1], &in[2], &in[3], &c);
71 if (rc != 4 && (rc != 5 || c != '\n'))
72 return -EINVAL;
73 for (count = 0; count < 4; count++) {
74 if (in[count] > 255)
75 return -EINVAL;
76 addr[count] = in[count];
77 }
78 return 0;
79}
80
81void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
82{
83 sprintf(buf, "%pI6", addr);
84}
85
86int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
87{
88 const char *end, *end_tmp, *start;
89 __u16 *in;
90 char num[5];
91 int num2, cnt, out, found, save_cnt;
92 unsigned short in_tmp[8] = {0, };
93
94 cnt = out = found = save_cnt = num2 = 0;
95 end = start = buf;
96 in = (__u16 *) addr;
97 memset(in, 0, 16);
98 while (*end) {
99 end = strchr(start, ':');
100 if (end == NULL) {
101 end = buf + strlen(buf);
102 end_tmp = strchr(start, '\n');
103 if (end_tmp != NULL)
104 end = end_tmp;
105 out = 1;
106 }
107 if ((end - start)) {
108 memset(num, 0, 5);
109 if ((end - start) > 4)
110 return -EINVAL;
111 memcpy(num, start, end - start);
112 if (!qeth_l3_isxdigit(num))
113 return -EINVAL;
114 sscanf(start, "%x", &num2);
115 if (found)
116 in_tmp[save_cnt++] = num2;
117 else
118 in[cnt++] = num2;
119 if (out)
120 break;
121 } else {
122 if (found)
123 return -EINVAL;
124 found = 1;
125 }
126 start = ++end;
127 }
128 if (cnt + save_cnt > 8)
129 return -EINVAL;
130 cnt = 7;
131 while (save_cnt)
132 in[cnt--] = in_tmp[--save_cnt];
133 return 0;
134}
135
136void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
137 char *buf)
138{
139 if (proto == QETH_PROT_IPV4)
140 qeth_l3_ipaddr4_to_string(addr, buf);
141 else if (proto == QETH_PROT_IPV6)
142 qeth_l3_ipaddr6_to_string(addr, buf);
143}
144
145int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
146 __u8 *addr)
147{
148 if (proto == QETH_PROT_IPV4)
149 return qeth_l3_string_to_ipaddr4(buf, addr);
150 else if (proto == QETH_PROT_IPV6)
151 return qeth_l3_string_to_ipaddr6(buf, addr);
152 else
153 return -EINVAL;
154}
155
156static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
157{
158 int i, j;
159 u8 octet;
160
161 for (i = 0; i < len; ++i) {
162 octet = addr[i];
163 for (j = 7; j >= 0; --j) {
164 bits[i*8 + j] = octet & 1;
165 octet >>= 1;
166 }
167 }
168}
169
170int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
171 struct qeth_ipaddr *addr)
172{
173 struct qeth_ipato_entry *ipatoe;
174 u8 addr_bits[128] = {0, };
175 u8 ipatoe_bits[128] = {0, };
176 int rc = 0;
177
178 if (!card->ipato.enabled)
179 return 0;
180
181 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
182 (addr->proto == QETH_PROT_IPV4)? 4:16);
183 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
184 if (addr->proto != ipatoe->proto)
185 continue;
186 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
187 (ipatoe->proto == QETH_PROT_IPV4) ?
188 4 : 16);
189 if (addr->proto == QETH_PROT_IPV4)
190 rc = !memcmp(addr_bits, ipatoe_bits,
191 min(32, ipatoe->mask_bits));
192 else
193 rc = !memcmp(addr_bits, ipatoe_bits,
194 min(128, ipatoe->mask_bits));
195 if (rc)
196 break;
197 }
198 /* invert? */
199 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
200 rc = !rc;
201 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
202 rc = !rc;
203
204 return rc;
205}
206
207/*
208 * Add IP to be added to todo list. If there is already an "add todo"
209 * in this list we just incremenent the reference count.
210 * Returns 0 if we just incremented reference count.
211 */
212static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
213 struct qeth_ipaddr *addr, int add)
214{
215 struct qeth_ipaddr *tmp, *t;
216 int found = 0;
217
218 if (card->options.sniffer)
219 return 0;
220 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
221 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
222 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
223 return 0;
224 if ((tmp->proto == QETH_PROT_IPV4) &&
225 (addr->proto == QETH_PROT_IPV4) &&
226 (tmp->type == addr->type) &&
227 (tmp->is_multicast == addr->is_multicast) &&
228 (tmp->u.a4.addr == addr->u.a4.addr) &&
229 (tmp->u.a4.mask == addr->u.a4.mask)) {
230 found = 1;
231 break;
232 }
233 if ((tmp->proto == QETH_PROT_IPV6) &&
234 (addr->proto == QETH_PROT_IPV6) &&
235 (tmp->type == addr->type) &&
236 (tmp->is_multicast == addr->is_multicast) &&
237 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
238 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
239 sizeof(struct in6_addr)) == 0)) {
240 found = 1;
241 break;
242 }
243 }
244 if (found) {
245 if (addr->users != 0)
246 tmp->users += addr->users;
247 else
248 tmp->users += add ? 1 : -1;
249 if (tmp->users == 0) {
250 list_del(&tmp->entry);
251 kfree(tmp);
252 }
253 return 0;
254 } else {
255 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
256 list_add(&addr->entry, card->ip_tbd_list);
257 else {
258 if (addr->users == 0)
259 addr->users += add ? 1 : -1;
260 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
261 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
262 QETH_CARD_TEXT(card, 2, "tkovaddr");
263 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
264 }
265 list_add_tail(&addr->entry, card->ip_tbd_list);
266 }
267 return 1;
268 }
269}
270
271int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
272{
273 unsigned long flags;
274 int rc = 0;
275
276 QETH_CARD_TEXT(card, 4, "delip");
277
278 if (addr->proto == QETH_PROT_IPV4)
279 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
280 else {
281 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
282 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
283 }
284 spin_lock_irqsave(&card->ip_lock, flags);
285 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
286 spin_unlock_irqrestore(&card->ip_lock, flags);
287 return rc;
288}
289
290int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
291{
292 unsigned long flags;
293 int rc = 0;
294
295 QETH_CARD_TEXT(card, 4, "addip");
296 if (addr->proto == QETH_PROT_IPV4)
297 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
298 else {
299 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
300 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
301 }
302 spin_lock_irqsave(&card->ip_lock, flags);
303 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
304 spin_unlock_irqrestore(&card->ip_lock, flags);
305 return rc;
306}
307
308
309struct qeth_ipaddr *qeth_l3_get_addr_buffer(
310 enum qeth_prot_versions prot)
311{
312 struct qeth_ipaddr *addr;
313
314 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
315 if (addr == NULL) {
316 return NULL;
317 }
318 addr->type = QETH_IP_TYPE_NORMAL;
319 addr->proto = prot;
320 return addr;
321}
322
323static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
324{
325 struct qeth_ipaddr *iptodo;
326 unsigned long flags;
327
328 QETH_CARD_TEXT(card, 4, "delmc");
329 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
330 if (!iptodo) {
331 QETH_CARD_TEXT(card, 2, "dmcnomem");
332 return;
333 }
334 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
335 spin_lock_irqsave(&card->ip_lock, flags);
336 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
337 kfree(iptodo);
338 spin_unlock_irqrestore(&card->ip_lock, flags);
339}
340
341/*
342 * Add/remove address to/from card's ip list, i.e. try to add or remove
343 * reference to/from an IP address that is already registered on the card.
344 * Returns:
345 * 0 address was on card and its reference count has been adjusted,
346 * but is still > 0, so nothing has to be done
347 * also returns 0 if card was not on card and the todo was to delete
348 * the address -> there is also nothing to be done
349 * 1 address was not on card and the todo is to add it to the card's ip
350 * list
351 * -1 address was on card and its reference count has been decremented
352 * to <= 0 by the todo -> address must be removed from card
353 */
354static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
355 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
356{
357 struct qeth_ipaddr *addr;
358 int found = 0;
359
360 list_for_each_entry(addr, &card->ip_list, entry) {
361 if ((addr->proto == QETH_PROT_IPV4) &&
362 (todo->proto == QETH_PROT_IPV4) &&
363 (addr->type == todo->type) &&
364 (addr->u.a4.addr == todo->u.a4.addr) &&
365 (addr->u.a4.mask == todo->u.a4.mask)) {
366 found = 1;
367 break;
368 }
369 if ((addr->proto == QETH_PROT_IPV6) &&
370 (todo->proto == QETH_PROT_IPV6) &&
371 (addr->type == todo->type) &&
372 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
373 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
374 sizeof(struct in6_addr)) == 0)) {
375 found = 1;
376 break;
377 }
378 }
379 if (found) {
380 addr->users += todo->users;
381 if (addr->users <= 0) {
382 *__addr = addr;
383 return -1;
384 } else {
385 /* for VIPA and RXIP limit refcount to 1 */
386 if (addr->type != QETH_IP_TYPE_NORMAL)
387 addr->users = 1;
388 return 0;
389 }
390 }
391 if (todo->users > 0) {
392 /* for VIPA and RXIP limit refcount to 1 */
393 if (todo->type != QETH_IP_TYPE_NORMAL)
394 todo->users = 1;
395 return 1;
396 } else
397 return 0;
398}
399
400static void __qeth_l3_delete_all_mc(struct qeth_card *card,
401 unsigned long *flags)
402{
403 struct list_head fail_list;
404 struct qeth_ipaddr *addr, *tmp;
405 int rc;
406
407 INIT_LIST_HEAD(&fail_list);
408again:
409 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
410 if (addr->is_multicast) {
411 list_del(&addr->entry);
412 spin_unlock_irqrestore(&card->ip_lock, *flags);
413 rc = qeth_l3_deregister_addr_entry(card, addr);
414 spin_lock_irqsave(&card->ip_lock, *flags);
415 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
416 kfree(addr);
417 else
418 list_add_tail(&addr->entry, &fail_list);
419 goto again;
420 }
421 }
422 list_splice(&fail_list, &card->ip_list);
423}
424
425void qeth_l3_set_ip_addr_list(struct qeth_card *card)
426{
427 struct list_head *tbd_list;
428 struct qeth_ipaddr *todo, *addr;
429 unsigned long flags;
430 int rc;
431
432 QETH_CARD_TEXT(card, 2, "sdiplist");
433 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
434
435 if ((card->state != CARD_STATE_UP &&
436 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
437 return;
438 }
439
440 spin_lock_irqsave(&card->ip_lock, flags);
441 tbd_list = card->ip_tbd_list;
442 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
443 if (!card->ip_tbd_list) {
444 QETH_CARD_TEXT(card, 0, "silnomem");
445 card->ip_tbd_list = tbd_list;
446 spin_unlock_irqrestore(&card->ip_lock, flags);
447 return;
448 } else
449 INIT_LIST_HEAD(card->ip_tbd_list);
450
451 while (!list_empty(tbd_list)) {
452 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
453 list_del(&todo->entry);
454 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
455 __qeth_l3_delete_all_mc(card, &flags);
456 kfree(todo);
457 continue;
458 }
459 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
460 if (rc == 0) {
461 /* nothing to be done; only adjusted refcount */
462 kfree(todo);
463 } else if (rc == 1) {
464 /* new entry to be added to on-card list */
465 spin_unlock_irqrestore(&card->ip_lock, flags);
466 rc = qeth_l3_register_addr_entry(card, todo);
467 spin_lock_irqsave(&card->ip_lock, flags);
468 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
469 list_add_tail(&todo->entry, &card->ip_list);
470 else
471 kfree(todo);
472 } else if (rc == -1) {
473 /* on-card entry to be removed */
474 list_del_init(&addr->entry);
475 spin_unlock_irqrestore(&card->ip_lock, flags);
476 rc = qeth_l3_deregister_addr_entry(card, addr);
477 spin_lock_irqsave(&card->ip_lock, flags);
478 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
479 kfree(addr);
480 else
481 list_add_tail(&addr->entry, &card->ip_list);
482 kfree(todo);
483 }
484 }
485 spin_unlock_irqrestore(&card->ip_lock, flags);
486 kfree(tbd_list);
487}
488
489static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
490{
491 struct qeth_ipaddr *addr, *tmp;
492 unsigned long flags;
493
494 QETH_CARD_TEXT(card, 4, "clearip");
495 if (recover && card->options.sniffer)
496 return;
497 spin_lock_irqsave(&card->ip_lock, flags);
498 /* clear todo list */
499 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
500 list_del(&addr->entry);
501 kfree(addr);
502 }
503
504 while (!list_empty(&card->ip_list)) {
505 addr = list_entry(card->ip_list.next,
506 struct qeth_ipaddr, entry);
507 list_del_init(&addr->entry);
508 if (!recover || addr->is_multicast) {
509 kfree(addr);
510 continue;
511 }
512 list_add_tail(&addr->entry, card->ip_tbd_list);
513 }
514 spin_unlock_irqrestore(&card->ip_lock, flags);
515}
516
517static int qeth_l3_address_exists_in_list(struct list_head *list,
518 struct qeth_ipaddr *addr, int same_type)
519{
520 struct qeth_ipaddr *tmp;
521
522 list_for_each_entry(tmp, list, entry) {
523 if ((tmp->proto == QETH_PROT_IPV4) &&
524 (addr->proto == QETH_PROT_IPV4) &&
525 ((same_type && (tmp->type == addr->type)) ||
526 (!same_type && (tmp->type != addr->type))) &&
527 (tmp->u.a4.addr == addr->u.a4.addr))
528 return 1;
529
530 if ((tmp->proto == QETH_PROT_IPV6) &&
531 (addr->proto == QETH_PROT_IPV6) &&
532 ((same_type && (tmp->type == addr->type)) ||
533 (!same_type && (tmp->type != addr->type))) &&
534 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
535 sizeof(struct in6_addr)) == 0))
536 return 1;
537
538 }
539 return 0;
540}
541
542static int qeth_l3_send_setdelmc(struct qeth_card *card,
543 struct qeth_ipaddr *addr, int ipacmd)
544{
545 int rc;
546 struct qeth_cmd_buffer *iob;
547 struct qeth_ipa_cmd *cmd;
548
549 QETH_CARD_TEXT(card, 4, "setdelmc");
550
551 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
552 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
553 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
554 if (addr->proto == QETH_PROT_IPV6)
555 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
556 sizeof(struct in6_addr));
557 else
558 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
559
560 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
561
562 return rc;
563}
564
565static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
566{
567 int i, j;
568 for (i = 0; i < 16; i++) {
569 j = (len) - (i * 8);
570 if (j >= 8)
571 netmask[i] = 0xff;
572 else if (j > 0)
573 netmask[i] = (u8)(0xFF00 >> j);
574 else
575 netmask[i] = 0;
576 }
577}
578
579static int qeth_l3_send_setdelip(struct qeth_card *card,
580 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
581{
582 int rc;
583 struct qeth_cmd_buffer *iob;
584 struct qeth_ipa_cmd *cmd;
585 __u8 netmask[16];
586
587 QETH_CARD_TEXT(card, 4, "setdelip");
588 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
589
590 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
591 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
592 if (addr->proto == QETH_PROT_IPV6) {
593 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
594 sizeof(struct in6_addr));
595 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
596 memcpy(cmd->data.setdelip6.mask, netmask,
597 sizeof(struct in6_addr));
598 cmd->data.setdelip6.flags = flags;
599 } else {
600 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
601 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
602 cmd->data.setdelip4.flags = flags;
603 }
604
605 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
606
607 return rc;
608}
609
610static int qeth_l3_send_setrouting(struct qeth_card *card,
611 enum qeth_routing_types type, enum qeth_prot_versions prot)
612{
613 int rc;
614 struct qeth_ipa_cmd *cmd;
615 struct qeth_cmd_buffer *iob;
616
617 QETH_CARD_TEXT(card, 4, "setroutg");
618 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
619 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
620 cmd->data.setrtg.type = (type);
621 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
622
623 return rc;
624}
625
626static int qeth_l3_correct_routing_type(struct qeth_card *card,
627 enum qeth_routing_types *type, enum qeth_prot_versions prot)
628{
629 if (card->info.type == QETH_CARD_TYPE_IQD) {
630 switch (*type) {
631 case NO_ROUTER:
632 case PRIMARY_CONNECTOR:
633 case SECONDARY_CONNECTOR:
634 case MULTICAST_ROUTER:
635 return 0;
636 default:
637 goto out_inval;
638 }
639 } else {
640 switch (*type) {
641 case NO_ROUTER:
642 case PRIMARY_ROUTER:
643 case SECONDARY_ROUTER:
644 return 0;
645 case MULTICAST_ROUTER:
646 if (qeth_is_ipafunc_supported(card, prot,
647 IPA_OSA_MC_ROUTER))
648 return 0;
649 default:
650 goto out_inval;
651 }
652 }
653out_inval:
654 *type = NO_ROUTER;
655 return -EINVAL;
656}
657
658int qeth_l3_setrouting_v4(struct qeth_card *card)
659{
660 int rc;
661
662 QETH_CARD_TEXT(card, 3, "setrtg4");
663
664 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
665 QETH_PROT_IPV4);
666 if (rc)
667 return rc;
668
669 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
670 QETH_PROT_IPV4);
671 if (rc) {
672 card->options.route4.type = NO_ROUTER;
673 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
674 " on %s. Type set to 'no router'.\n", rc,
675 QETH_CARD_IFNAME(card));
676 }
677 return rc;
678}
679
680int qeth_l3_setrouting_v6(struct qeth_card *card)
681{
682 int rc = 0;
683
684 QETH_CARD_TEXT(card, 3, "setrtg6");
685#ifdef CONFIG_QETH_IPV6
686
687 if (!qeth_is_supported(card, IPA_IPV6))
688 return 0;
689 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
690 QETH_PROT_IPV6);
691 if (rc)
692 return rc;
693
694 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
695 QETH_PROT_IPV6);
696 if (rc) {
697 card->options.route6.type = NO_ROUTER;
698 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
699 " on %s. Type set to 'no router'.\n", rc,
700 QETH_CARD_IFNAME(card));
701 }
702#endif
703 return rc;
704}
705
706/*
707 * IP address takeover related functions
708 */
709static void qeth_l3_clear_ipato_list(struct qeth_card *card)
710{
711
712 struct qeth_ipato_entry *ipatoe, *tmp;
713 unsigned long flags;
714
715 spin_lock_irqsave(&card->ip_lock, flags);
716 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
717 list_del(&ipatoe->entry);
718 kfree(ipatoe);
719 }
720 spin_unlock_irqrestore(&card->ip_lock, flags);
721}
722
723int qeth_l3_add_ipato_entry(struct qeth_card *card,
724 struct qeth_ipato_entry *new)
725{
726 struct qeth_ipato_entry *ipatoe;
727 unsigned long flags;
728 int rc = 0;
729
730 QETH_CARD_TEXT(card, 2, "addipato");
731 spin_lock_irqsave(&card->ip_lock, flags);
732 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
733 if (ipatoe->proto != new->proto)
734 continue;
735 if (!memcmp(ipatoe->addr, new->addr,
736 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
737 (ipatoe->mask_bits == new->mask_bits)) {
738 rc = -EEXIST;
739 break;
740 }
741 }
742 if (!rc)
743 list_add_tail(&new->entry, &card->ipato.entries);
744
745 spin_unlock_irqrestore(&card->ip_lock, flags);
746 return rc;
747}
748
749void qeth_l3_del_ipato_entry(struct qeth_card *card,
750 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
751{
752 struct qeth_ipato_entry *ipatoe, *tmp;
753 unsigned long flags;
754
755 QETH_CARD_TEXT(card, 2, "delipato");
756 spin_lock_irqsave(&card->ip_lock, flags);
757 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
758 if (ipatoe->proto != proto)
759 continue;
760 if (!memcmp(ipatoe->addr, addr,
761 (proto == QETH_PROT_IPV4)? 4:16) &&
762 (ipatoe->mask_bits == mask_bits)) {
763 list_del(&ipatoe->entry);
764 kfree(ipatoe);
765 }
766 }
767 spin_unlock_irqrestore(&card->ip_lock, flags);
768}
769
770/*
771 * VIPA related functions
772 */
773int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
774 const u8 *addr)
775{
776 struct qeth_ipaddr *ipaddr;
777 unsigned long flags;
778 int rc = 0;
779
780 ipaddr = qeth_l3_get_addr_buffer(proto);
781 if (ipaddr) {
782 if (proto == QETH_PROT_IPV4) {
783 QETH_CARD_TEXT(card, 2, "addvipa4");
784 memcpy(&ipaddr->u.a4.addr, addr, 4);
785 ipaddr->u.a4.mask = 0;
786 } else if (proto == QETH_PROT_IPV6) {
787 QETH_CARD_TEXT(card, 2, "addvipa6");
788 memcpy(&ipaddr->u.a6.addr, addr, 16);
789 ipaddr->u.a6.pfxlen = 0;
790 }
791 ipaddr->type = QETH_IP_TYPE_VIPA;
792 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
793 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
794 } else
795 return -ENOMEM;
796 spin_lock_irqsave(&card->ip_lock, flags);
797 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
798 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
799 rc = -EEXIST;
800 spin_unlock_irqrestore(&card->ip_lock, flags);
801 if (rc) {
802 kfree(ipaddr);
803 return rc;
804 }
805 if (!qeth_l3_add_ip(card, ipaddr))
806 kfree(ipaddr);
807 qeth_l3_set_ip_addr_list(card);
808 return rc;
809}
810
811void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
812 const u8 *addr)
813{
814 struct qeth_ipaddr *ipaddr;
815
816 ipaddr = qeth_l3_get_addr_buffer(proto);
817 if (ipaddr) {
818 if (proto == QETH_PROT_IPV4) {
819 QETH_CARD_TEXT(card, 2, "delvipa4");
820 memcpy(&ipaddr->u.a4.addr, addr, 4);
821 ipaddr->u.a4.mask = 0;
822 } else if (proto == QETH_PROT_IPV6) {
823 QETH_CARD_TEXT(card, 2, "delvipa6");
824 memcpy(&ipaddr->u.a6.addr, addr, 16);
825 ipaddr->u.a6.pfxlen = 0;
826 }
827 ipaddr->type = QETH_IP_TYPE_VIPA;
828 } else
829 return;
830 if (!qeth_l3_delete_ip(card, ipaddr))
831 kfree(ipaddr);
832 qeth_l3_set_ip_addr_list(card);
833}
834
835/*
836 * proxy ARP related functions
837 */
838int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
839 const u8 *addr)
840{
841 struct qeth_ipaddr *ipaddr;
842 unsigned long flags;
843 int rc = 0;
844
845 ipaddr = qeth_l3_get_addr_buffer(proto);
846 if (ipaddr) {
847 if (proto == QETH_PROT_IPV4) {
848 QETH_CARD_TEXT(card, 2, "addrxip4");
849 memcpy(&ipaddr->u.a4.addr, addr, 4);
850 ipaddr->u.a4.mask = 0;
851 } else if (proto == QETH_PROT_IPV6) {
852 QETH_CARD_TEXT(card, 2, "addrxip6");
853 memcpy(&ipaddr->u.a6.addr, addr, 16);
854 ipaddr->u.a6.pfxlen = 0;
855 }
856 ipaddr->type = QETH_IP_TYPE_RXIP;
857 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
858 ipaddr->del_flags = 0;
859 } else
860 return -ENOMEM;
861 spin_lock_irqsave(&card->ip_lock, flags);
862 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
863 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
864 rc = -EEXIST;
865 spin_unlock_irqrestore(&card->ip_lock, flags);
866 if (rc) {
867 kfree(ipaddr);
868 return rc;
869 }
870 if (!qeth_l3_add_ip(card, ipaddr))
871 kfree(ipaddr);
872 qeth_l3_set_ip_addr_list(card);
873 return 0;
874}
875
876void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
877 const u8 *addr)
878{
879 struct qeth_ipaddr *ipaddr;
880
881 ipaddr = qeth_l3_get_addr_buffer(proto);
882 if (ipaddr) {
883 if (proto == QETH_PROT_IPV4) {
884 QETH_CARD_TEXT(card, 2, "addrxip4");
885 memcpy(&ipaddr->u.a4.addr, addr, 4);
886 ipaddr->u.a4.mask = 0;
887 } else if (proto == QETH_PROT_IPV6) {
888 QETH_CARD_TEXT(card, 2, "addrxip6");
889 memcpy(&ipaddr->u.a6.addr, addr, 16);
890 ipaddr->u.a6.pfxlen = 0;
891 }
892 ipaddr->type = QETH_IP_TYPE_RXIP;
893 } else
894 return;
895 if (!qeth_l3_delete_ip(card, ipaddr))
896 kfree(ipaddr);
897 qeth_l3_set_ip_addr_list(card);
898}
899
900static int qeth_l3_register_addr_entry(struct qeth_card *card,
901 struct qeth_ipaddr *addr)
902{
903 char buf[50];
904 int rc = 0;
905 int cnt = 3;
906
907 if (addr->proto == QETH_PROT_IPV4) {
908 QETH_CARD_TEXT(card, 2, "setaddr4");
909 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
910 } else if (addr->proto == QETH_PROT_IPV6) {
911 QETH_CARD_TEXT(card, 2, "setaddr6");
912 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
913 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
914 } else {
915 QETH_CARD_TEXT(card, 2, "setaddr?");
916 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
917 }
918 do {
919 if (addr->is_multicast)
920 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
921 else
922 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
923 addr->set_flags);
924 if (rc)
925 QETH_CARD_TEXT(card, 2, "failed");
926 } while ((--cnt > 0) && rc);
927 if (rc) {
928 QETH_CARD_TEXT(card, 2, "FAILED");
929 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
930 dev_warn(&card->gdev->dev,
931 "Registering IP address %s failed\n", buf);
932 }
933 return rc;
934}
935
936static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
937 struct qeth_ipaddr *addr)
938{
939 int rc = 0;
940
941 if (addr->proto == QETH_PROT_IPV4) {
942 QETH_CARD_TEXT(card, 2, "deladdr4");
943 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
944 } else if (addr->proto == QETH_PROT_IPV6) {
945 QETH_CARD_TEXT(card, 2, "deladdr6");
946 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
947 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
948 } else {
949 QETH_CARD_TEXT(card, 2, "deladdr?");
950 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
951 }
952 if (addr->is_multicast)
953 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
954 else
955 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
956 addr->del_flags);
957 if (rc)
958 QETH_CARD_TEXT(card, 2, "failed");
959
960 return rc;
961}
962
963static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
964{
965 if (cast_type == RTN_MULTICAST)
966 return QETH_CAST_MULTICAST;
967 if (cast_type == RTN_BROADCAST)
968 return QETH_CAST_BROADCAST;
969 return QETH_CAST_UNICAST;
970}
971
972static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
973{
974 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
975 if (cast_type == RTN_MULTICAST)
976 return ct | QETH_CAST_MULTICAST;
977 if (cast_type == RTN_ANYCAST)
978 return ct | QETH_CAST_ANYCAST;
979 if (cast_type == RTN_BROADCAST)
980 return ct | QETH_CAST_BROADCAST;
981 return ct | QETH_CAST_UNICAST;
982}
983
984static int qeth_l3_setadapter_parms(struct qeth_card *card)
985{
986 int rc;
987
988 QETH_DBF_TEXT(SETUP, 2, "setadprm");
989
990 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
991 dev_info(&card->gdev->dev,
992 "set adapter parameters not supported.\n");
993 QETH_DBF_TEXT(SETUP, 2, " notsupp");
994 return 0;
995 }
996 rc = qeth_query_setadapterparms(card);
997 if (rc) {
998 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
999 "0x%x\n", dev_name(&card->gdev->dev), rc);
1000 return rc;
1001 }
1002 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1003 rc = qeth_setadpparms_change_macaddr(card);
1004 if (rc)
1005 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1006 " address failed\n");
1007 }
1008
1009 return rc;
1010}
1011
1012static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1013 struct qeth_reply *reply, unsigned long data)
1014{
1015 struct qeth_ipa_cmd *cmd;
1016
1017 QETH_CARD_TEXT(card, 4, "defadpcb");
1018
1019 cmd = (struct qeth_ipa_cmd *) data;
1020 if (cmd->hdr.return_code == 0) {
1021 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1022 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1023 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1024 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1025 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1026 }
1027 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1028 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1030 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1031 }
1032 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1033 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1034 card->info.tx_csum_mask =
1035 cmd->data.setassparms.data.flags_32bit;
1036 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1037 }
1038
1039 return 0;
1040}
1041
1042static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1043 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1044 __u16 len, enum qeth_prot_versions prot)
1045{
1046 struct qeth_cmd_buffer *iob;
1047 struct qeth_ipa_cmd *cmd;
1048
1049 QETH_CARD_TEXT(card, 4, "getasscm");
1050 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1051
1052 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1053 cmd->data.setassparms.hdr.assist_no = ipa_func;
1054 cmd->data.setassparms.hdr.length = 8 + len;
1055 cmd->data.setassparms.hdr.command_code = cmd_code;
1056 cmd->data.setassparms.hdr.return_code = 0;
1057 cmd->data.setassparms.hdr.seq_no = 0;
1058
1059 return iob;
1060}
1061
1062static int qeth_l3_send_setassparms(struct qeth_card *card,
1063 struct qeth_cmd_buffer *iob, __u16 len, long data,
1064 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1065 unsigned long),
1066 void *reply_param)
1067{
1068 int rc;
1069 struct qeth_ipa_cmd *cmd;
1070
1071 QETH_CARD_TEXT(card, 4, "sendassp");
1072
1073 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1074 if (len <= sizeof(__u32))
1075 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1076 else /* (len > sizeof(__u32)) */
1077 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1078
1079 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1080 return rc;
1081}
1082
1083#ifdef CONFIG_QETH_IPV6
1084static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1085 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1086{
1087 int rc;
1088 struct qeth_cmd_buffer *iob;
1089
1090 QETH_CARD_TEXT(card, 4, "simassp6");
1091 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1092 0, QETH_PROT_IPV6);
1093 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1094 qeth_l3_default_setassparms_cb, NULL);
1095 return rc;
1096}
1097#endif
1098
1099static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1100 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1101{
1102 int rc;
1103 int length = 0;
1104 struct qeth_cmd_buffer *iob;
1105
1106 QETH_CARD_TEXT(card, 4, "simassp4");
1107 if (data)
1108 length = sizeof(__u32);
1109 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1110 length, QETH_PROT_IPV4);
1111 rc = qeth_l3_send_setassparms(card, iob, length, data,
1112 qeth_l3_default_setassparms_cb, NULL);
1113 return rc;
1114}
1115
1116static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1117{
1118 int rc;
1119
1120 QETH_CARD_TEXT(card, 3, "ipaarp");
1121
1122 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1123 dev_info(&card->gdev->dev,
1124 "ARP processing not supported on %s!\n",
1125 QETH_CARD_IFNAME(card));
1126 return 0;
1127 }
1128 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1129 IPA_CMD_ASS_START, 0);
1130 if (rc) {
1131 dev_warn(&card->gdev->dev,
1132 "Starting ARP processing support for %s failed\n",
1133 QETH_CARD_IFNAME(card));
1134 }
1135 return rc;
1136}
1137
1138static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1139{
1140 int rc;
1141
1142 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1143
1144 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1145 dev_info(&card->gdev->dev,
1146 "Hardware IP fragmentation not supported on %s\n",
1147 QETH_CARD_IFNAME(card));
1148 return -EOPNOTSUPP;
1149 }
1150
1151 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1152 IPA_CMD_ASS_START, 0);
1153 if (rc) {
1154 dev_warn(&card->gdev->dev,
1155 "Starting IP fragmentation support for %s failed\n",
1156 QETH_CARD_IFNAME(card));
1157 } else
1158 dev_info(&card->gdev->dev,
1159 "Hardware IP fragmentation enabled \n");
1160 return rc;
1161}
1162
1163static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1164{
1165 int rc;
1166
1167 QETH_CARD_TEXT(card, 3, "stsrcmac");
1168
1169 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1170 dev_info(&card->gdev->dev,
1171 "Inbound source MAC-address not supported on %s\n",
1172 QETH_CARD_IFNAME(card));
1173 return -EOPNOTSUPP;
1174 }
1175
1176 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1177 IPA_CMD_ASS_START, 0);
1178 if (rc)
1179 dev_warn(&card->gdev->dev,
1180 "Starting source MAC-address support for %s failed\n",
1181 QETH_CARD_IFNAME(card));
1182 return rc;
1183}
1184
1185static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1186{
1187 int rc = 0;
1188
1189 QETH_CARD_TEXT(card, 3, "strtvlan");
1190
1191 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1192 dev_info(&card->gdev->dev,
1193 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1194 return -EOPNOTSUPP;
1195 }
1196
1197 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1198 IPA_CMD_ASS_START, 0);
1199 if (rc) {
1200 dev_warn(&card->gdev->dev,
1201 "Starting VLAN support for %s failed\n",
1202 QETH_CARD_IFNAME(card));
1203 } else {
1204 dev_info(&card->gdev->dev, "VLAN enabled\n");
1205 }
1206 return rc;
1207}
1208
1209static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1210{
1211 int rc;
1212
1213 QETH_CARD_TEXT(card, 3, "stmcast");
1214
1215 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1216 dev_info(&card->gdev->dev,
1217 "Multicast not supported on %s\n",
1218 QETH_CARD_IFNAME(card));
1219 return -EOPNOTSUPP;
1220 }
1221
1222 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1223 IPA_CMD_ASS_START, 0);
1224 if (rc) {
1225 dev_warn(&card->gdev->dev,
1226 "Starting multicast support for %s failed\n",
1227 QETH_CARD_IFNAME(card));
1228 } else {
1229 dev_info(&card->gdev->dev, "Multicast enabled\n");
1230 card->dev->flags |= IFF_MULTICAST;
1231 }
1232 return rc;
1233}
1234
1235#ifdef CONFIG_QETH_IPV6
1236static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1237{
1238 int rc;
1239
1240 QETH_CARD_TEXT(card, 3, "softipv6");
1241
1242 if (card->info.type == QETH_CARD_TYPE_IQD)
1243 goto out;
1244
1245 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1246 if (rc) {
1247 dev_err(&card->gdev->dev,
1248 "Activating IPv6 support for %s failed\n",
1249 QETH_CARD_IFNAME(card));
1250 return rc;
1251 }
1252 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1253 IPA_CMD_ASS_START, 3);
1254 if (rc) {
1255 dev_err(&card->gdev->dev,
1256 "Activating IPv6 support for %s failed\n",
1257 QETH_CARD_IFNAME(card));
1258 return rc;
1259 }
1260 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1261 IPA_CMD_ASS_START);
1262 if (rc) {
1263 dev_err(&card->gdev->dev,
1264 "Activating IPv6 support for %s failed\n",
1265 QETH_CARD_IFNAME(card));
1266 return rc;
1267 }
1268 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1269 IPA_CMD_ASS_START);
1270 if (rc) {
1271 dev_warn(&card->gdev->dev,
1272 "Enabling the passthrough mode for %s failed\n",
1273 QETH_CARD_IFNAME(card));
1274 return rc;
1275 }
1276out:
1277 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1278 return 0;
1279}
1280#endif
1281
1282static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1283{
1284 int rc = 0;
1285
1286 QETH_CARD_TEXT(card, 3, "strtipv6");
1287
1288 if (!qeth_is_supported(card, IPA_IPV6)) {
1289 dev_info(&card->gdev->dev,
1290 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1291 return 0;
1292 }
1293#ifdef CONFIG_QETH_IPV6
1294 rc = qeth_l3_softsetup_ipv6(card);
1295#endif
1296 return rc ;
1297}
1298
1299static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1300{
1301 int rc;
1302
1303 QETH_CARD_TEXT(card, 3, "stbrdcst");
1304 card->info.broadcast_capable = 0;
1305 if (!qeth_is_supported(card, IPA_FILTERING)) {
1306 dev_info(&card->gdev->dev,
1307 "Broadcast not supported on %s\n",
1308 QETH_CARD_IFNAME(card));
1309 rc = -EOPNOTSUPP;
1310 goto out;
1311 }
1312 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1313 IPA_CMD_ASS_START, 0);
1314 if (rc) {
1315 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1316 "%s failed\n", QETH_CARD_IFNAME(card));
1317 goto out;
1318 }
1319
1320 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1321 IPA_CMD_ASS_CONFIGURE, 1);
1322 if (rc) {
1323 dev_warn(&card->gdev->dev,
1324 "Setting up broadcast filtering for %s failed\n",
1325 QETH_CARD_IFNAME(card));
1326 goto out;
1327 }
1328 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1329 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1330 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1331 IPA_CMD_ASS_ENABLE, 1);
1332 if (rc) {
1333 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1334 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1335 goto out;
1336 }
1337 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1338out:
1339 if (card->info.broadcast_capable)
1340 card->dev->flags |= IFF_BROADCAST;
1341 else
1342 card->dev->flags &= ~IFF_BROADCAST;
1343 return rc;
1344}
1345
1346static int qeth_l3_send_checksum_command(struct qeth_card *card)
1347{
1348 int rc;
1349
1350 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1351 IPA_CMD_ASS_START, 0);
1352 if (rc) {
1353 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1354 "failed, using SW checksumming\n",
1355 QETH_CARD_IFNAME(card));
1356 return rc;
1357 }
1358 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1359 IPA_CMD_ASS_ENABLE,
1360 card->info.csum_mask);
1361 if (rc) {
1362 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1363 "failed, using SW checksumming\n",
1364 QETH_CARD_IFNAME(card));
1365 return rc;
1366 }
1367 return 0;
1368}
1369
1370static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1371{
1372 int rc = 0;
1373
1374 if (on) {
1375 rc = qeth_l3_send_checksum_command(card);
1376 if (rc)
1377 return -EIO;
1378 dev_info(&card->gdev->dev,
1379 "HW Checksumming (inbound) enabled\n");
1380 } else {
1381 rc = qeth_l3_send_simple_setassparms(card,
1382 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1383 if (rc)
1384 return -EIO;
1385 }
1386
1387 return 0;
1388}
1389
1390static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1391{
1392 QETH_CARD_TEXT(card, 3, "strtcsum");
1393
1394 if (card->dev->features & NETIF_F_RXCSUM) {
1395 rtnl_lock();
1396 /* force set_features call */
1397 card->dev->features &= ~NETIF_F_RXCSUM;
1398 netdev_update_features(card->dev);
1399 rtnl_unlock();
1400 }
1401 return 0;
1402}
1403
1404static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1405{
1406 int rc = 0;
1407
1408 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1409 return rc;
1410 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1411 IPA_CMD_ASS_START, 0);
1412 if (rc)
1413 goto err_out;
1414 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1415 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1416 if (rc)
1417 goto err_out;
1418 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1419 return rc;
1420err_out:
1421 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1422 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1423 return rc;
1424}
1425
1426static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1427{
1428 int rc;
1429
1430 QETH_CARD_TEXT(card, 3, "sttso");
1431
1432 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1433 dev_info(&card->gdev->dev,
1434 "Outbound TSO not supported on %s\n",
1435 QETH_CARD_IFNAME(card));
1436 rc = -EOPNOTSUPP;
1437 } else {
1438 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1439 IPA_CMD_ASS_START, 0);
1440 if (rc)
1441 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1442 "segmentation offload for %s failed\n",
1443 QETH_CARD_IFNAME(card));
1444 else
1445 dev_info(&card->gdev->dev,
1446 "Outbound TSO enabled\n");
1447 }
1448 if (rc)
1449 card->dev->features &= ~NETIF_F_TSO;
1450 return rc;
1451}
1452
1453static int qeth_l3_start_ipassists(struct qeth_card *card)
1454{
1455 QETH_CARD_TEXT(card, 3, "strtipas");
1456
1457 if (qeth_set_access_ctrl_online(card, 0))
1458 return -EIO;
1459 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1460 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1461 qeth_l3_start_ipa_source_mac(card); /* go on*/
1462 qeth_l3_start_ipa_vlan(card); /* go on*/
1463 qeth_l3_start_ipa_multicast(card); /* go on*/
1464 qeth_l3_start_ipa_ipv6(card); /* go on*/
1465 qeth_l3_start_ipa_broadcast(card); /* go on*/
1466 qeth_l3_start_ipa_checksum(card); /* go on*/
1467 qeth_l3_start_ipa_tx_checksum(card);
1468 qeth_l3_start_ipa_tso(card); /* go on*/
1469 return 0;
1470}
1471
1472static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1473 struct qeth_reply *reply, unsigned long data)
1474{
1475 struct qeth_ipa_cmd *cmd;
1476
1477 cmd = (struct qeth_ipa_cmd *) data;
1478 if (cmd->hdr.return_code == 0)
1479 memcpy(card->dev->dev_addr,
1480 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1481 else
1482 eth_random_addr(card->dev->dev_addr);
1483
1484 return 0;
1485}
1486
1487static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1488{
1489 int rc = 0;
1490 struct qeth_cmd_buffer *iob;
1491 struct qeth_ipa_cmd *cmd;
1492
1493 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1494
1495 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1496 QETH_PROT_IPV6);
1497 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1498 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1499 card->info.unique_id;
1500
1501 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1502 NULL);
1503 return rc;
1504}
1505
1506static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1507 struct qeth_reply *reply, unsigned long data)
1508{
1509 struct qeth_ipa_cmd *cmd;
1510
1511 cmd = (struct qeth_ipa_cmd *) data;
1512 if (cmd->hdr.return_code == 0)
1513 card->info.unique_id = *((__u16 *)
1514 &cmd->data.create_destroy_addr.unique_id[6]);
1515 else {
1516 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1517 UNIQUE_ID_NOT_BY_CARD;
1518 dev_warn(&card->gdev->dev, "The network adapter failed to "
1519 "generate a unique ID\n");
1520 }
1521 return 0;
1522}
1523
1524static int qeth_l3_get_unique_id(struct qeth_card *card)
1525{
1526 int rc = 0;
1527 struct qeth_cmd_buffer *iob;
1528 struct qeth_ipa_cmd *cmd;
1529
1530 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1531
1532 if (!qeth_is_supported(card, IPA_IPV6)) {
1533 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1534 UNIQUE_ID_NOT_BY_CARD;
1535 return 0;
1536 }
1537
1538 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1539 QETH_PROT_IPV6);
1540 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1541 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1542 card->info.unique_id;
1543
1544 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1545 return rc;
1546}
1547
1548static int
1549qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1550 unsigned long data)
1551{
1552 struct qeth_ipa_cmd *cmd;
1553 __u16 rc;
1554
1555 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1556
1557 cmd = (struct qeth_ipa_cmd *)data;
1558 rc = cmd->hdr.return_code;
1559 if (rc)
1560 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1561 switch (cmd->data.diagass.action) {
1562 case QETH_DIAGS_CMD_TRACE_QUERY:
1563 break;
1564 case QETH_DIAGS_CMD_TRACE_DISABLE:
1565 switch (rc) {
1566 case 0:
1567 case IPA_RC_INVALID_SUBCMD:
1568 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1569 dev_info(&card->gdev->dev, "The HiperSockets network "
1570 "traffic analyzer is deactivated\n");
1571 break;
1572 default:
1573 break;
1574 }
1575 break;
1576 case QETH_DIAGS_CMD_TRACE_ENABLE:
1577 switch (rc) {
1578 case 0:
1579 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1580 dev_info(&card->gdev->dev, "The HiperSockets network "
1581 "traffic analyzer is activated\n");
1582 break;
1583 case IPA_RC_HARDWARE_AUTH_ERROR:
1584 dev_warn(&card->gdev->dev, "The device is not "
1585 "authorized to run as a HiperSockets network "
1586 "traffic analyzer\n");
1587 break;
1588 case IPA_RC_TRACE_ALREADY_ACTIVE:
1589 dev_warn(&card->gdev->dev, "A HiperSockets "
1590 "network traffic analyzer is already "
1591 "active in the HiperSockets LAN\n");
1592 break;
1593 default:
1594 break;
1595 }
1596 break;
1597 default:
1598 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1599 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1600 }
1601
1602 return 0;
1603}
1604
1605static int
1606qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1607{
1608 struct qeth_cmd_buffer *iob;
1609 struct qeth_ipa_cmd *cmd;
1610
1611 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1612
1613 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1614 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1615 cmd->data.diagass.subcmd_len = 16;
1616 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1617 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1618 cmd->data.diagass.action = diags_cmd;
1619 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1620}
1621
1622static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1623 struct net_device *dev)
1624{
1625 ip_eth_mc_map(ipm, mac);
1626}
1627
1628static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1629{
1630 struct qeth_ipaddr *ipm;
1631 struct ip_mc_list *im4;
1632 char buf[MAX_ADDR_LEN];
1633
1634 QETH_CARD_TEXT(card, 4, "addmc");
1635 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1636 im4 = rcu_dereference(im4->next_rcu)) {
1637 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1638 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1639 if (!ipm)
1640 continue;
1641 ipm->u.a4.addr = im4->multiaddr;
1642 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1643 ipm->is_multicast = 1;
1644 if (!qeth_l3_add_ip(card, ipm))
1645 kfree(ipm);
1646 }
1647}
1648
1649/* called with rcu_read_lock */
1650static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1651{
1652 struct in_device *in_dev;
1653 u16 vid;
1654
1655 QETH_CARD_TEXT(card, 4, "addmcvl");
1656 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1657 return;
1658
1659 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1660 struct net_device *netdev;
1661
1662 netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q),
1663 vid);
1664 if (netdev == NULL ||
1665 !(netdev->flags & IFF_UP))
1666 continue;
1667 in_dev = __in_dev_get_rcu(netdev);
1668 if (!in_dev)
1669 continue;
1670 qeth_l3_add_mc(card, in_dev);
1671 }
1672}
1673
1674static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1675{
1676 struct in_device *in4_dev;
1677
1678 QETH_CARD_TEXT(card, 4, "chkmcv4");
1679 rcu_read_lock();
1680 in4_dev = __in_dev_get_rcu(card->dev);
1681 if (in4_dev == NULL)
1682 goto unlock;
1683 qeth_l3_add_mc(card, in4_dev);
1684 qeth_l3_add_vlan_mc(card);
1685unlock:
1686 rcu_read_unlock();
1687}
1688
1689#ifdef CONFIG_QETH_IPV6
1690static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1691{
1692 struct qeth_ipaddr *ipm;
1693 struct ifmcaddr6 *im6;
1694 char buf[MAX_ADDR_LEN];
1695
1696 QETH_CARD_TEXT(card, 4, "addmc6");
1697 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1698 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1699 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1700 if (!ipm)
1701 continue;
1702 ipm->is_multicast = 1;
1703 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1704 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1705 sizeof(struct in6_addr));
1706 if (!qeth_l3_add_ip(card, ipm))
1707 kfree(ipm);
1708 }
1709}
1710
1711/* called with rcu_read_lock */
1712static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1713{
1714 struct inet6_dev *in_dev;
1715 u16 vid;
1716
1717 QETH_CARD_TEXT(card, 4, "admc6vl");
1718 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1719 return;
1720
1721 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1722 struct net_device *netdev;
1723
1724 netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q),
1725 vid);
1726 if (netdev == NULL ||
1727 !(netdev->flags & IFF_UP))
1728 continue;
1729 in_dev = in6_dev_get(netdev);
1730 if (!in_dev)
1731 continue;
1732 read_lock_bh(&in_dev->lock);
1733 qeth_l3_add_mc6(card, in_dev);
1734 read_unlock_bh(&in_dev->lock);
1735 in6_dev_put(in_dev);
1736 }
1737}
1738
1739static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1740{
1741 struct inet6_dev *in6_dev;
1742
1743 QETH_CARD_TEXT(card, 4, "chkmcv6");
1744 if (!qeth_is_supported(card, IPA_IPV6))
1745 return ;
1746 in6_dev = in6_dev_get(card->dev);
1747 if (in6_dev == NULL)
1748 return;
1749 rcu_read_lock();
1750 read_lock_bh(&in6_dev->lock);
1751 qeth_l3_add_mc6(card, in6_dev);
1752 qeth_l3_add_vlan_mc6(card);
1753 read_unlock_bh(&in6_dev->lock);
1754 rcu_read_unlock();
1755 in6_dev_put(in6_dev);
1756}
1757#endif /* CONFIG_QETH_IPV6 */
1758
1759static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1760 unsigned short vid)
1761{
1762 struct in_device *in_dev;
1763 struct in_ifaddr *ifa;
1764 struct qeth_ipaddr *addr;
1765 struct net_device *netdev;
1766
1767 QETH_CARD_TEXT(card, 4, "frvaddr4");
1768
1769 netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q), vid);
1770 if (!netdev)
1771 return;
1772 in_dev = in_dev_get(netdev);
1773 if (!in_dev)
1774 return;
1775 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1776 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1777 if (addr) {
1778 addr->u.a4.addr = ifa->ifa_address;
1779 addr->u.a4.mask = ifa->ifa_mask;
1780 addr->type = QETH_IP_TYPE_NORMAL;
1781 if (!qeth_l3_delete_ip(card, addr))
1782 kfree(addr);
1783 }
1784 }
1785 in_dev_put(in_dev);
1786}
1787
1788static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1789 unsigned short vid)
1790{
1791#ifdef CONFIG_QETH_IPV6
1792 struct inet6_dev *in6_dev;
1793 struct inet6_ifaddr *ifa;
1794 struct qeth_ipaddr *addr;
1795 struct net_device *netdev;
1796
1797 QETH_CARD_TEXT(card, 4, "frvaddr6");
1798
1799 netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q), vid);
1800 if (!netdev)
1801 return;
1802 in6_dev = in6_dev_get(netdev);
1803 if (!in6_dev)
1804 return;
1805 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1806 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1807 if (addr) {
1808 memcpy(&addr->u.a6.addr, &ifa->addr,
1809 sizeof(struct in6_addr));
1810 addr->u.a6.pfxlen = ifa->prefix_len;
1811 addr->type = QETH_IP_TYPE_NORMAL;
1812 if (!qeth_l3_delete_ip(card, addr))
1813 kfree(addr);
1814 }
1815 }
1816 in6_dev_put(in6_dev);
1817#endif /* CONFIG_QETH_IPV6 */
1818}
1819
1820static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1821 unsigned short vid)
1822{
1823 rcu_read_lock();
1824 qeth_l3_free_vlan_addresses4(card, vid);
1825 qeth_l3_free_vlan_addresses6(card, vid);
1826 rcu_read_unlock();
1827}
1828
1829static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1830 __be16 proto, u16 vid)
1831{
1832 struct qeth_card *card = dev->ml_priv;
1833
1834 set_bit(vid, card->active_vlans);
1835 return 0;
1836}
1837
1838static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1839 __be16 proto, u16 vid)
1840{
1841 struct qeth_card *card = dev->ml_priv;
1842 unsigned long flags;
1843
1844 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1845 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1846 QETH_CARD_TEXT(card, 3, "kidREC");
1847 return 0;
1848 }
1849 spin_lock_irqsave(&card->vlanlock, flags);
1850 /* unregister IP addresses of vlan device */
1851 qeth_l3_free_vlan_addresses(card, vid);
1852 clear_bit(vid, card->active_vlans);
1853 spin_unlock_irqrestore(&card->vlanlock, flags);
1854 qeth_l3_set_multicast_list(card->dev);
1855 return 0;
1856}
1857
1858static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1859 struct sk_buff *skb, struct qeth_hdr *hdr,
1860 unsigned short *vlan_id)
1861{
1862 __be16 prot;
1863 struct iphdr *ip_hdr;
1864 unsigned char tg_addr[MAX_ADDR_LEN];
1865 int is_vlan = 0;
1866
1867 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1868 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1869 ETH_P_IP);
1870 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1871 case QETH_CAST_MULTICAST:
1872 switch (prot) {
1873#ifdef CONFIG_QETH_IPV6
1874 case __constant_htons(ETH_P_IPV6):
1875 ndisc_mc_map((struct in6_addr *)
1876 skb->data + 24,
1877 tg_addr, card->dev, 0);
1878 break;
1879#endif
1880 case __constant_htons(ETH_P_IP):
1881 ip_hdr = (struct iphdr *)skb->data;
1882 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1883 break;
1884 default:
1885 memcpy(tg_addr, card->dev->broadcast,
1886 card->dev->addr_len);
1887 }
1888 card->stats.multicast++;
1889 skb->pkt_type = PACKET_MULTICAST;
1890 break;
1891 case QETH_CAST_BROADCAST:
1892 memcpy(tg_addr, card->dev->broadcast,
1893 card->dev->addr_len);
1894 card->stats.multicast++;
1895 skb->pkt_type = PACKET_BROADCAST;
1896 break;
1897 case QETH_CAST_UNICAST:
1898 case QETH_CAST_ANYCAST:
1899 case QETH_CAST_NOCAST:
1900 default:
1901 if (card->options.sniffer)
1902 skb->pkt_type = PACKET_OTHERHOST;
1903 else
1904 skb->pkt_type = PACKET_HOST;
1905 memcpy(tg_addr, card->dev->dev_addr,
1906 card->dev->addr_len);
1907 }
1908 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1909 card->dev->header_ops->create(skb, card->dev, prot,
1910 tg_addr, &hdr->hdr.l3.dest_addr[2],
1911 card->dev->addr_len);
1912 else
1913 card->dev->header_ops->create(skb, card->dev, prot,
1914 tg_addr, "FAKELL", card->dev->addr_len);
1915 }
1916
1917 skb->protocol = eth_type_trans(skb, card->dev);
1918
1919 if (hdr->hdr.l3.ext_flags &
1920 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1921 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1922 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1923 is_vlan = 1;
1924 }
1925
1926 if (card->dev->features & NETIF_F_RXCSUM) {
1927 if ((hdr->hdr.l3.ext_flags &
1928 (QETH_HDR_EXT_CSUM_HDR_REQ |
1929 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1930 (QETH_HDR_EXT_CSUM_HDR_REQ |
1931 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1932 skb->ip_summed = CHECKSUM_UNNECESSARY;
1933 else
1934 skb->ip_summed = CHECKSUM_NONE;
1935 } else
1936 skb->ip_summed = CHECKSUM_NONE;
1937
1938 return is_vlan;
1939}
1940
1941static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1942 int budget, int *done)
1943{
1944 int work_done = 0;
1945 struct sk_buff *skb;
1946 struct qeth_hdr *hdr;
1947 __u16 vlan_tag = 0;
1948 int is_vlan;
1949 unsigned int len;
1950 __u16 magic;
1951
1952 *done = 0;
1953 WARN_ON_ONCE(!budget);
1954 while (budget) {
1955 skb = qeth_core_get_next_skb(card,
1956 &card->qdio.in_q->bufs[card->rx.b_index],
1957 &card->rx.b_element, &card->rx.e_offset, &hdr);
1958 if (!skb) {
1959 *done = 1;
1960 break;
1961 }
1962 skb->dev = card->dev;
1963 switch (hdr->hdr.l3.id) {
1964 case QETH_HEADER_TYPE_LAYER3:
1965 magic = *(__u16 *)skb->data;
1966 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1967 (magic == ETH_P_AF_IUCV)) {
1968 skb->protocol = ETH_P_AF_IUCV;
1969 skb->pkt_type = PACKET_HOST;
1970 skb->mac_header = NET_SKB_PAD;
1971 skb->dev = card->dev;
1972 len = skb->len;
1973 card->dev->header_ops->create(skb, card->dev, 0,
1974 card->dev->dev_addr, "FAKELL",
1975 card->dev->addr_len);
1976 netif_receive_skb(skb);
1977 } else {
1978 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1979 &vlan_tag);
1980 len = skb->len;
1981 if (is_vlan && !card->options.sniffer)
1982 __vlan_hwaccel_put_tag(skb,
1983 htons(ETH_P_8021Q), vlan_tag);
1984 napi_gro_receive(&card->napi, skb);
1985 }
1986 break;
1987 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1988 skb->pkt_type = PACKET_HOST;
1989 skb->protocol = eth_type_trans(skb, skb->dev);
1990 len = skb->len;
1991 netif_receive_skb(skb);
1992 break;
1993 default:
1994 dev_kfree_skb_any(skb);
1995 QETH_CARD_TEXT(card, 3, "inbunkno");
1996 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1997 continue;
1998 }
1999 work_done++;
2000 budget--;
2001 card->stats.rx_packets++;
2002 card->stats.rx_bytes += len;
2003 }
2004 return work_done;
2005}
2006
2007static int qeth_l3_poll(struct napi_struct *napi, int budget)
2008{
2009 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2010 int work_done = 0;
2011 struct qeth_qdio_buffer *buffer;
2012 int done;
2013 int new_budget = budget;
2014
2015 if (card->options.performance_stats) {
2016 card->perf_stats.inbound_cnt++;
2017 card->perf_stats.inbound_start_time = qeth_get_micros();
2018 }
2019
2020 while (1) {
2021 if (!card->rx.b_count) {
2022 card->rx.qdio_err = 0;
2023 card->rx.b_count = qdio_get_next_buffers(
2024 card->data.ccwdev, 0, &card->rx.b_index,
2025 &card->rx.qdio_err);
2026 if (card->rx.b_count <= 0) {
2027 card->rx.b_count = 0;
2028 break;
2029 }
2030 card->rx.b_element =
2031 &card->qdio.in_q->bufs[card->rx.b_index]
2032 .buffer->element[0];
2033 card->rx.e_offset = 0;
2034 }
2035
2036 while (card->rx.b_count) {
2037 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2038 if (!(card->rx.qdio_err &&
2039 qeth_check_qdio_errors(card, buffer->buffer,
2040 card->rx.qdio_err, "qinerr")))
2041 work_done += qeth_l3_process_inbound_buffer(
2042 card, new_budget, &done);
2043 else
2044 done = 1;
2045
2046 if (done) {
2047 if (card->options.performance_stats)
2048 card->perf_stats.bufs_rec++;
2049 qeth_put_buffer_pool_entry(card,
2050 buffer->pool_entry);
2051 qeth_queue_input_buffer(card, card->rx.b_index);
2052 card->rx.b_count--;
2053 if (card->rx.b_count) {
2054 card->rx.b_index =
2055 (card->rx.b_index + 1) %
2056 QDIO_MAX_BUFFERS_PER_Q;
2057 card->rx.b_element =
2058 &card->qdio.in_q
2059 ->bufs[card->rx.b_index]
2060 .buffer->element[0];
2061 card->rx.e_offset = 0;
2062 }
2063 }
2064
2065 if (work_done >= budget)
2066 goto out;
2067 else
2068 new_budget = budget - work_done;
2069 }
2070 }
2071
2072 napi_complete(napi);
2073 if (qdio_start_irq(card->data.ccwdev, 0))
2074 napi_schedule(&card->napi);
2075out:
2076 if (card->options.performance_stats)
2077 card->perf_stats.inbound_time += qeth_get_micros() -
2078 card->perf_stats.inbound_start_time;
2079 return work_done;
2080}
2081
2082static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2083 struct qeth_card *card)
2084{
2085 int rc = 0;
2086 u16 vid;
2087
2088 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2089 struct net_device *netdev;
2090
2091 rcu_read_lock();
2092 netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q),
2093 vid);
2094 rcu_read_unlock();
2095 if (netdev == dev) {
2096 rc = QETH_VLAN_CARD;
2097 break;
2098 }
2099 }
2100
2101 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2102 return 0;
2103
2104 return rc;
2105}
2106
2107static int qeth_l3_verify_dev(struct net_device *dev)
2108{
2109 struct qeth_card *card;
2110 unsigned long flags;
2111 int rc = 0;
2112
2113 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2114 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2115 if (card->dev == dev) {
2116 rc = QETH_REAL_CARD;
2117 break;
2118 }
2119 rc = qeth_l3_verify_vlan_dev(dev, card);
2120 if (rc)
2121 break;
2122 }
2123 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2124
2125 return rc;
2126}
2127
2128static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2129{
2130 struct qeth_card *card = NULL;
2131 int rc;
2132
2133 rc = qeth_l3_verify_dev(dev);
2134 if (rc == QETH_REAL_CARD)
2135 card = dev->ml_priv;
2136 else if (rc == QETH_VLAN_CARD)
2137 card = vlan_dev_real_dev(dev)->ml_priv;
2138 if (card && card->options.layer2)
2139 card = NULL;
2140 if (card)
2141 QETH_CARD_TEXT_(card, 4, "%d", rc);
2142 return card ;
2143}
2144
2145static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2146{
2147 int rc = 0;
2148
2149 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2150 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2151
2152 qeth_set_allowed_threads(card, 0, 1);
2153 if (card->options.sniffer &&
2154 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2155 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2156 if (card->read.state == CH_STATE_UP &&
2157 card->write.state == CH_STATE_UP &&
2158 (card->state == CARD_STATE_UP)) {
2159 if (recovery_mode)
2160 qeth_l3_stop(card->dev);
2161 else {
2162 rtnl_lock();
2163 dev_close(card->dev);
2164 rtnl_unlock();
2165 }
2166 card->state = CARD_STATE_SOFTSETUP;
2167 }
2168 if (card->state == CARD_STATE_SOFTSETUP) {
2169 qeth_l3_clear_ip_list(card, 1);
2170 qeth_clear_ipacmd_list(card);
2171 card->state = CARD_STATE_HARDSETUP;
2172 }
2173 if (card->state == CARD_STATE_HARDSETUP) {
2174 qeth_qdio_clear_card(card, 0);
2175 qeth_clear_qdio_buffers(card);
2176 qeth_clear_working_pool_list(card);
2177 card->state = CARD_STATE_DOWN;
2178 }
2179 if (card->state == CARD_STATE_DOWN) {
2180 qeth_clear_cmd_buffers(&card->read);
2181 qeth_clear_cmd_buffers(&card->write);
2182 }
2183 return rc;
2184}
2185
2186/*
2187 * test for and Switch promiscuous mode (on or off)
2188 * either for guestlan or HiperSocket Sniffer
2189 */
2190static void
2191qeth_l3_handle_promisc_mode(struct qeth_card *card)
2192{
2193 struct net_device *dev = card->dev;
2194
2195 if (((dev->flags & IFF_PROMISC) &&
2196 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2197 (!(dev->flags & IFF_PROMISC) &&
2198 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2199 return;
2200
2201 if (card->info.guestlan) { /* Guestlan trace */
2202 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2203 qeth_setadp_promisc_mode(card);
2204 } else if (card->options.sniffer && /* HiperSockets trace */
2205 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2206 if (dev->flags & IFF_PROMISC) {
2207 QETH_CARD_TEXT(card, 3, "+promisc");
2208 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2209 } else {
2210 QETH_CARD_TEXT(card, 3, "-promisc");
2211 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2212 }
2213 }
2214}
2215
2216static void qeth_l3_set_multicast_list(struct net_device *dev)
2217{
2218 struct qeth_card *card = dev->ml_priv;
2219
2220 QETH_CARD_TEXT(card, 3, "setmulti");
2221 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2222 (card->state != CARD_STATE_UP))
2223 return;
2224 if (!card->options.sniffer) {
2225 qeth_l3_delete_mc_addresses(card);
2226 qeth_l3_add_multicast_ipv4(card);
2227#ifdef CONFIG_QETH_IPV6
2228 qeth_l3_add_multicast_ipv6(card);
2229#endif
2230 qeth_l3_set_ip_addr_list(card);
2231 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2232 return;
2233 }
2234 qeth_l3_handle_promisc_mode(card);
2235}
2236
2237static const char *qeth_l3_arp_get_error_cause(int *rc)
2238{
2239 switch (*rc) {
2240 case QETH_IPA_ARP_RC_FAILED:
2241 *rc = -EIO;
2242 return "operation failed";
2243 case QETH_IPA_ARP_RC_NOTSUPP:
2244 *rc = -EOPNOTSUPP;
2245 return "operation not supported";
2246 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2247 *rc = -EINVAL;
2248 return "argument out of range";
2249 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2250 *rc = -EOPNOTSUPP;
2251 return "query operation not supported";
2252 case QETH_IPA_ARP_RC_Q_NO_DATA:
2253 *rc = -ENOENT;
2254 return "no query data available";
2255 default:
2256 return "unknown error";
2257 }
2258}
2259
2260static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2261{
2262 int tmp;
2263 int rc;
2264
2265 QETH_CARD_TEXT(card, 3, "arpstnoe");
2266
2267 /*
2268 * currently GuestLAN only supports the ARP assist function
2269 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2270 * thus we say EOPNOTSUPP for this ARP function
2271 */
2272 if (card->info.guestlan)
2273 return -EOPNOTSUPP;
2274 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2275 return -EOPNOTSUPP;
2276 }
2277 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2278 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2279 no_entries);
2280 if (rc) {
2281 tmp = rc;
2282 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2283 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2284 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2285 }
2286 return rc;
2287}
2288
2289static __u32 get_arp_entry_size(struct qeth_card *card,
2290 struct qeth_arp_query_data *qdata,
2291 struct qeth_arp_entrytype *type, __u8 strip_entries)
2292{
2293 __u32 rc;
2294 __u8 is_hsi;
2295
2296 is_hsi = qdata->reply_bits == 5;
2297 if (type->ip == QETHARP_IP_ADDR_V4) {
2298 QETH_CARD_TEXT(card, 4, "arpev4");
2299 if (strip_entries) {
2300 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2301 sizeof(struct qeth_arp_qi_entry7_short);
2302 } else {
2303 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2304 sizeof(struct qeth_arp_qi_entry7);
2305 }
2306 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2307 QETH_CARD_TEXT(card, 4, "arpev6");
2308 if (strip_entries) {
2309 rc = is_hsi ?
2310 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2311 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2312 } else {
2313 rc = is_hsi ?
2314 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2315 sizeof(struct qeth_arp_qi_entry7_ipv6);
2316 }
2317 } else {
2318 QETH_CARD_TEXT(card, 4, "arpinv");
2319 rc = 0;
2320 }
2321
2322 return rc;
2323}
2324
2325static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2326{
2327 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2328 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2329}
2330
2331static int qeth_l3_arp_query_cb(struct qeth_card *card,
2332 struct qeth_reply *reply, unsigned long data)
2333{
2334 struct qeth_ipa_cmd *cmd;
2335 struct qeth_arp_query_data *qdata;
2336 struct qeth_arp_query_info *qinfo;
2337 int i;
2338 int e;
2339 int entrybytes_done;
2340 int stripped_bytes;
2341 __u8 do_strip_entries;
2342
2343 QETH_CARD_TEXT(card, 3, "arpquecb");
2344
2345 qinfo = (struct qeth_arp_query_info *) reply->param;
2346 cmd = (struct qeth_ipa_cmd *) data;
2347 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2348 if (cmd->hdr.return_code) {
2349 QETH_CARD_TEXT(card, 4, "arpcberr");
2350 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2351 return 0;
2352 }
2353 if (cmd->data.setassparms.hdr.return_code) {
2354 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2355 QETH_CARD_TEXT(card, 4, "setaperr");
2356 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2357 return 0;
2358 }
2359 qdata = &cmd->data.setassparms.data.query_arp;
2360 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2361
2362 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2363 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2364 entrybytes_done = 0;
2365 for (e = 0; e < qdata->no_entries; ++e) {
2366 char *cur_entry;
2367 __u32 esize;
2368 struct qeth_arp_entrytype *etype;
2369
2370 cur_entry = &qdata->data + entrybytes_done;
2371 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2372 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2373 QETH_CARD_TEXT(card, 4, "pmis");
2374 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2375 break;
2376 }
2377 esize = get_arp_entry_size(card, qdata, etype,
2378 do_strip_entries);
2379 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2380 if (!esize)
2381 break;
2382
2383 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2384 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2385 cmd->hdr.return_code = IPA_RC_ENOMEM;
2386 goto out_error;
2387 }
2388
2389 memcpy(qinfo->udata + qinfo->udata_offset,
2390 &qdata->data + entrybytes_done + stripped_bytes,
2391 esize);
2392 entrybytes_done += esize + stripped_bytes;
2393 qinfo->udata_offset += esize;
2394 ++qinfo->no_entries;
2395 }
2396 /* check if all replies received ... */
2397 if (cmd->data.setassparms.hdr.seq_no <
2398 cmd->data.setassparms.hdr.number_of_replies)
2399 return 1;
2400 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2401 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2402 /* keep STRIP_ENTRIES flag so the user program can distinguish
2403 * stripped entries from normal ones */
2404 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2405 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2406 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2407 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2408 return 0;
2409out_error:
2410 i = 0;
2411 memcpy(qinfo->udata, &i, 4);
2412 return 0;
2413}
2414
2415static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2416 struct qeth_cmd_buffer *iob, int len,
2417 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2418 unsigned long),
2419 void *reply_param)
2420{
2421 QETH_CARD_TEXT(card, 4, "sendarp");
2422
2423 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2424 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2425 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2426 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2427 reply_cb, reply_param);
2428}
2429
2430static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2431 enum qeth_prot_versions prot,
2432 struct qeth_arp_query_info *qinfo)
2433{
2434 struct qeth_cmd_buffer *iob;
2435 struct qeth_ipa_cmd *cmd;
2436 int tmp;
2437 int rc;
2438
2439 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2440
2441 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2442 IPA_CMD_ASS_ARP_QUERY_INFO,
2443 sizeof(struct qeth_arp_query_data) - sizeof(char),
2444 prot);
2445 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2446 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2447 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2448 cmd->data.setassparms.data.query_arp.no_entries = 0;
2449 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2450 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2451 qeth_l3_arp_query_cb, (void *)qinfo);
2452 if (rc) {
2453 tmp = rc;
2454 QETH_DBF_MESSAGE(2,
2455 "Error while querying ARP cache on %s: %s "
2456 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2457 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2458 }
2459
2460 return rc;
2461}
2462
2463static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2464{
2465 struct qeth_arp_query_info qinfo = {0, };
2466 int rc;
2467
2468 QETH_CARD_TEXT(card, 3, "arpquery");
2469
2470 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2471 IPA_ARP_PROCESSING)) {
2472 QETH_CARD_TEXT(card, 3, "arpqnsup");
2473 rc = -EOPNOTSUPP;
2474 goto out;
2475 }
2476 /* get size of userspace buffer and mask_bits -> 6 bytes */
2477 if (copy_from_user(&qinfo, udata, 6)) {
2478 rc = -EFAULT;
2479 goto out;
2480 }
2481 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2482 if (!qinfo.udata) {
2483 rc = -ENOMEM;
2484 goto out;
2485 }
2486 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2487 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2488 if (rc) {
2489 if (copy_to_user(udata, qinfo.udata, 4))
2490 rc = -EFAULT;
2491 goto free_and_out;
2492 } else {
2493#ifdef CONFIG_QETH_IPV6
2494 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2495 /* fails in case of GuestLAN QDIO mode */
2496 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2497 &qinfo);
2498 }
2499#endif
2500 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2501 QETH_CARD_TEXT(card, 4, "qactf");
2502 rc = -EFAULT;
2503 goto free_and_out;
2504 }
2505 QETH_CARD_TEXT_(card, 4, "qacts");
2506 }
2507free_and_out:
2508 kfree(qinfo.udata);
2509out:
2510 return rc;
2511}
2512
2513static int qeth_l3_arp_add_entry(struct qeth_card *card,
2514 struct qeth_arp_cache_entry *entry)
2515{
2516 struct qeth_cmd_buffer *iob;
2517 char buf[16];
2518 int tmp;
2519 int rc;
2520
2521 QETH_CARD_TEXT(card, 3, "arpadent");
2522
2523 /*
2524 * currently GuestLAN only supports the ARP assist function
2525 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2526 * thus we say EOPNOTSUPP for this ARP function
2527 */
2528 if (card->info.guestlan)
2529 return -EOPNOTSUPP;
2530 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2531 return -EOPNOTSUPP;
2532 }
2533
2534 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2535 IPA_CMD_ASS_ARP_ADD_ENTRY,
2536 sizeof(struct qeth_arp_cache_entry),
2537 QETH_PROT_IPV4);
2538 rc = qeth_l3_send_setassparms(card, iob,
2539 sizeof(struct qeth_arp_cache_entry),
2540 (unsigned long) entry,
2541 qeth_l3_default_setassparms_cb, NULL);
2542 if (rc) {
2543 tmp = rc;
2544 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2545 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2546 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2547 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2548 }
2549 return rc;
2550}
2551
2552static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2553 struct qeth_arp_cache_entry *entry)
2554{
2555 struct qeth_cmd_buffer *iob;
2556 char buf[16] = {0, };
2557 int tmp;
2558 int rc;
2559
2560 QETH_CARD_TEXT(card, 3, "arprment");
2561
2562 /*
2563 * currently GuestLAN only supports the ARP assist function
2564 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2565 * thus we say EOPNOTSUPP for this ARP function
2566 */
2567 if (card->info.guestlan)
2568 return -EOPNOTSUPP;
2569 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2570 return -EOPNOTSUPP;
2571 }
2572 memcpy(buf, entry, 12);
2573 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2574 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2575 12,
2576 QETH_PROT_IPV4);
2577 rc = qeth_l3_send_setassparms(card, iob,
2578 12, (unsigned long)buf,
2579 qeth_l3_default_setassparms_cb, NULL);
2580 if (rc) {
2581 tmp = rc;
2582 memset(buf, 0, 16);
2583 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2584 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2585 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2586 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2587 }
2588 return rc;
2589}
2590
2591static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2592{
2593 int rc;
2594 int tmp;
2595
2596 QETH_CARD_TEXT(card, 3, "arpflush");
2597
2598 /*
2599 * currently GuestLAN only supports the ARP assist function
2600 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2601 * thus we say EOPNOTSUPP for this ARP function
2602 */
2603 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2604 return -EOPNOTSUPP;
2605 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2606 return -EOPNOTSUPP;
2607 }
2608 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2609 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2610 if (rc) {
2611 tmp = rc;
2612 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2613 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2614 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2615 }
2616 return rc;
2617}
2618
2619static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2620{
2621 struct qeth_card *card = dev->ml_priv;
2622 struct qeth_arp_cache_entry arp_entry;
2623 struct mii_ioctl_data *mii_data;
2624 int rc = 0;
2625
2626 if (!card)
2627 return -ENODEV;
2628
2629 if ((card->state != CARD_STATE_UP) &&
2630 (card->state != CARD_STATE_SOFTSETUP))
2631 return -ENODEV;
2632
2633 switch (cmd) {
2634 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2635 if (!capable(CAP_NET_ADMIN)) {
2636 rc = -EPERM;
2637 break;
2638 }
2639 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2640 break;
2641 case SIOC_QETH_ARP_QUERY_INFO:
2642 if (!capable(CAP_NET_ADMIN)) {
2643 rc = -EPERM;
2644 break;
2645 }
2646 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2647 break;
2648 case SIOC_QETH_ARP_ADD_ENTRY:
2649 if (!capable(CAP_NET_ADMIN)) {
2650 rc = -EPERM;
2651 break;
2652 }
2653 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2654 sizeof(struct qeth_arp_cache_entry)))
2655 rc = -EFAULT;
2656 else
2657 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2658 break;
2659 case SIOC_QETH_ARP_REMOVE_ENTRY:
2660 if (!capable(CAP_NET_ADMIN)) {
2661 rc = -EPERM;
2662 break;
2663 }
2664 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2665 sizeof(struct qeth_arp_cache_entry)))
2666 rc = -EFAULT;
2667 else
2668 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2669 break;
2670 case SIOC_QETH_ARP_FLUSH_CACHE:
2671 if (!capable(CAP_NET_ADMIN)) {
2672 rc = -EPERM;
2673 break;
2674 }
2675 rc = qeth_l3_arp_flush_cache(card);
2676 break;
2677 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2678 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2679 break;
2680 case SIOC_QETH_GET_CARD_TYPE:
2681 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2682 card->info.type == QETH_CARD_TYPE_OSX) &&
2683 !card->info.guestlan)
2684 return 1;
2685 return 0;
2686 break;
2687 case SIOCGMIIPHY:
2688 mii_data = if_mii(rq);
2689 mii_data->phy_id = 0;
2690 break;
2691 case SIOCGMIIREG:
2692 mii_data = if_mii(rq);
2693 if (mii_data->phy_id != 0)
2694 rc = -EINVAL;
2695 else
2696 mii_data->val_out = qeth_mdio_read(dev,
2697 mii_data->phy_id,
2698 mii_data->reg_num);
2699 break;
2700 case SIOC_QETH_QUERY_OAT:
2701 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2702 break;
2703 default:
2704 rc = -EOPNOTSUPP;
2705 }
2706 if (rc)
2707 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2708 return rc;
2709}
2710
2711int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2712{
2713 int cast_type = RTN_UNSPEC;
2714 struct neighbour *n = NULL;
2715 struct dst_entry *dst;
2716
2717 rcu_read_lock();
2718 dst = skb_dst(skb);
2719 if (dst)
2720 n = dst_neigh_lookup_skb(dst, skb);
2721 if (n) {
2722 cast_type = n->type;
2723 rcu_read_unlock();
2724 neigh_release(n);
2725 if ((cast_type == RTN_BROADCAST) ||
2726 (cast_type == RTN_MULTICAST) ||
2727 (cast_type == RTN_ANYCAST))
2728 return cast_type;
2729 else
2730 return RTN_UNSPEC;
2731 }
2732 rcu_read_unlock();
2733
2734 /* try something else */
2735 if (skb->protocol == ETH_P_IPV6)
2736 return (skb_network_header(skb)[24] == 0xff) ?
2737 RTN_MULTICAST : 0;
2738 else if (skb->protocol == ETH_P_IP)
2739 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2740 RTN_MULTICAST : 0;
2741 /* ... */
2742 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2743 return RTN_BROADCAST;
2744 else {
2745 u16 hdr_mac;
2746
2747 hdr_mac = *((u16 *)skb->data);
2748 /* tr multicast? */
2749 switch (card->info.link_type) {
2750 case QETH_LINK_TYPE_HSTR:
2751 case QETH_LINK_TYPE_LANE_TR:
2752 if ((hdr_mac == QETH_TR_MAC_NC) ||
2753 (hdr_mac == QETH_TR_MAC_C))
2754 return RTN_MULTICAST;
2755 break;
2756 /* eth or so multicast? */
2757 default:
2758 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2759 (hdr_mac == QETH_ETH_MAC_V6))
2760 return RTN_MULTICAST;
2761 }
2762 }
2763 return cast_type;
2764}
2765
2766static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2767 struct qeth_hdr *hdr, struct sk_buff *skb)
2768{
2769 char daddr[16];
2770 struct af_iucv_trans_hdr *iucv_hdr;
2771
2772 skb_pull(skb, 14);
2773 card->dev->header_ops->create(skb, card->dev, 0,
2774 card->dev->dev_addr, card->dev->dev_addr,
2775 card->dev->addr_len);
2776 skb_pull(skb, 14);
2777 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2778 memset(hdr, 0, sizeof(struct qeth_hdr));
2779 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2780 hdr->hdr.l3.ext_flags = 0;
2781 hdr->hdr.l3.length = skb->len;
2782 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2783 memset(daddr, 0, sizeof(daddr));
2784 daddr[0] = 0xfe;
2785 daddr[1] = 0x80;
2786 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2787 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2788}
2789
2790static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2791 struct sk_buff *skb, int ipv, int cast_type)
2792{
2793 struct dst_entry *dst;
2794
2795 memset(hdr, 0, sizeof(struct qeth_hdr));
2796 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2797 hdr->hdr.l3.ext_flags = 0;
2798
2799 /*
2800 * before we're going to overwrite this location with next hop ip.
2801 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2802 */
2803 if (vlan_tx_tag_present(skb)) {
2804 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2805 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2806 else
2807 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2808 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2809 }
2810
2811 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2812
2813 rcu_read_lock();
2814 dst = skb_dst(skb);
2815 if (ipv == 4) {
2816 struct rtable *rt = (struct rtable *) dst;
2817 __be32 *pkey = &ip_hdr(skb)->daddr;
2818
2819 if (rt->rt_gateway)
2820 pkey = &rt->rt_gateway;
2821
2822 /* IPv4 */
2823 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2824 memset(hdr->hdr.l3.dest_addr, 0, 12);
2825 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2826 } else if (ipv == 6) {
2827 struct rt6_info *rt = (struct rt6_info *) dst;
2828 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2829
2830 if (!ipv6_addr_any(&rt->rt6i_gateway))
2831 pkey = &rt->rt6i_gateway;
2832
2833 /* IPv6 */
2834 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2835 if (card->info.type == QETH_CARD_TYPE_IQD)
2836 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2837 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2838 } else {
2839 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2840 skb->dev->broadcast, 6)) {
2841 /* broadcast? */
2842 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2843 QETH_HDR_PASSTHRU;
2844 } else {
2845 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2846 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2847 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2848 }
2849 }
2850 rcu_read_unlock();
2851}
2852
2853static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2854 struct qeth_hdr *hdr, struct sk_buff *skb)
2855{
2856 struct iphdr *iph = ip_hdr(skb);
2857
2858 /* tcph->check contains already the pseudo hdr checksum
2859 * so just set the header flags
2860 */
2861 if (iph->protocol == IPPROTO_UDP)
2862 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2863 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2864 QETH_HDR_EXT_CSUM_HDR_REQ;
2865 iph->check = 0;
2866 if (card->options.performance_stats)
2867 card->perf_stats.tx_csum++;
2868}
2869
2870static void qeth_tso_fill_header(struct qeth_card *card,
2871 struct qeth_hdr *qhdr, struct sk_buff *skb)
2872{
2873 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2874 struct tcphdr *tcph = tcp_hdr(skb);
2875 struct iphdr *iph = ip_hdr(skb);
2876 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2877
2878 /*fix header to TSO values ...*/
2879 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2880 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2881 /*set values which are fix for the first approach ...*/
2882 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2883 hdr->ext.imb_hdr_no = 1;
2884 hdr->ext.hdr_type = 1;
2885 hdr->ext.hdr_version = 1;
2886 hdr->ext.hdr_len = 28;
2887 /*insert non-fix values */
2888 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2889 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2890 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2891 sizeof(struct qeth_hdr_tso));
2892 tcph->check = 0;
2893 if (skb->protocol == ETH_P_IPV6) {
2894 ip6h->payload_len = 0;
2895 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2896 0, IPPROTO_TCP, 0);
2897 } else {
2898 /*OSA want us to set these values ...*/
2899 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2900 0, IPPROTO_TCP, 0);
2901 iph->tot_len = 0;
2902 iph->check = 0;
2903 }
2904}
2905
2906static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2907{
2908 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2909 tcp_hdr(skb)->doff * 4;
2910 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2911 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2912
2913 elements += qeth_get_elements_for_frags(skb);
2914
2915 return elements;
2916}
2917
2918static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2919{
2920 int rc;
2921 u16 *tag;
2922 struct qeth_hdr *hdr = NULL;
2923 int elements_needed = 0;
2924 int elems;
2925 struct qeth_card *card = dev->ml_priv;
2926 struct sk_buff *new_skb = NULL;
2927 int ipv = qeth_get_ip_version(skb);
2928 int cast_type = qeth_l3_get_cast_type(card, skb);
2929 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2930 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2931 int tx_bytes = skb->len;
2932 bool large_send;
2933 int data_offset = -1;
2934 int nr_frags;
2935
2936 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2937 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2938 ((card->options.cq == QETH_CQ_ENABLED) &&
2939 (skb->protocol != ETH_P_AF_IUCV)))) ||
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 if (new_skb->protocol == ETH_P_AF_IUCV)
2963 data_offset = 0;
2964 else
2965 data_offset = ETH_HLEN;
2966 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2967 if (!hdr)
2968 goto tx_drop;
2969 elements_needed++;
2970 } else {
2971 /* create a clone with writeable headroom */
2972 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2973 + VLAN_HLEN);
2974 if (!new_skb)
2975 goto tx_drop;
2976 }
2977
2978 if (card->info.type == QETH_CARD_TYPE_IQD) {
2979 if (data_offset < 0)
2980 skb_pull(new_skb, ETH_HLEN);
2981 } else {
2982 if (ipv == 4) {
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 }
2997 }
2998
2999 netif_stop_queue(dev);
3000
3001 /* fix hardware limitation: as long as we do not have sbal
3002 * chaining we can not send long frag lists
3003 */
3004 if (large_send) {
3005 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3006 if (skb_linearize(new_skb))
3007 goto tx_drop;
3008 if (card->options.performance_stats)
3009 card->perf_stats.tx_lin++;
3010 }
3011 }
3012
3013 if (large_send && (cast_type == RTN_UNSPEC)) {
3014 hdr = (struct qeth_hdr *)skb_push(new_skb,
3015 sizeof(struct qeth_hdr_tso));
3016 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3017 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3018 qeth_tso_fill_header(card, hdr, new_skb);
3019 elements_needed++;
3020 } else {
3021 if (data_offset < 0) {
3022 hdr = (struct qeth_hdr *)skb_push(new_skb,
3023 sizeof(struct qeth_hdr));
3024 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3025 cast_type);
3026 } else {
3027 if (new_skb->protocol == ETH_P_AF_IUCV)
3028 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3029 else {
3030 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3031 cast_type);
3032 hdr->hdr.l3.length = new_skb->len - data_offset;
3033 }
3034 }
3035
3036 if (skb->ip_summed == CHECKSUM_PARTIAL)
3037 qeth_l3_hdr_csum(card, hdr, new_skb);
3038 }
3039
3040 elems = qeth_get_elements_no(card, new_skb, elements_needed);
3041 if (!elems) {
3042 if (data_offset >= 0)
3043 kmem_cache_free(qeth_core_header_cache, hdr);
3044 goto tx_drop;
3045 }
3046 elements_needed += elems;
3047 nr_frags = skb_shinfo(new_skb)->nr_frags;
3048
3049 if (card->info.type != QETH_CARD_TYPE_IQD) {
3050 int len;
3051 if (large_send)
3052 len = ((unsigned long)tcp_hdr(new_skb) +
3053 tcp_hdr(new_skb)->doff * 4) -
3054 (unsigned long)new_skb->data;
3055 else
3056 len = sizeof(struct qeth_hdr_layer3);
3057
3058 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
3059 goto tx_drop;
3060 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3061 elements_needed);
3062 } else
3063 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3064 elements_needed, data_offset, 0);
3065
3066 if (!rc) {
3067 card->stats.tx_packets++;
3068 card->stats.tx_bytes += tx_bytes;
3069 if (new_skb != skb)
3070 dev_kfree_skb_any(skb);
3071 if (card->options.performance_stats) {
3072 if (large_send) {
3073 card->perf_stats.large_send_bytes += tx_bytes;
3074 card->perf_stats.large_send_cnt++;
3075 }
3076 if (nr_frags) {
3077 card->perf_stats.sg_skbs_sent++;
3078 /* nr_frags + skb->data */
3079 card->perf_stats.sg_frags_sent += nr_frags + 1;
3080 }
3081 }
3082 rc = NETDEV_TX_OK;
3083 } else {
3084 if (data_offset >= 0)
3085 kmem_cache_free(qeth_core_header_cache, hdr);
3086
3087 if (rc == -EBUSY) {
3088 if (new_skb != skb)
3089 dev_kfree_skb_any(new_skb);
3090 return NETDEV_TX_BUSY;
3091 } else
3092 goto tx_drop;
3093 }
3094
3095 netif_wake_queue(dev);
3096 if (card->options.performance_stats)
3097 card->perf_stats.outbound_time += qeth_get_micros() -
3098 card->perf_stats.outbound_start_time;
3099 return rc;
3100
3101tx_drop:
3102 card->stats.tx_dropped++;
3103 card->stats.tx_errors++;
3104 if ((new_skb != skb) && new_skb)
3105 dev_kfree_skb_any(new_skb);
3106 dev_kfree_skb_any(skb);
3107 netif_wake_queue(dev);
3108 return NETDEV_TX_OK;
3109}
3110
3111static int __qeth_l3_open(struct net_device *dev)
3112{
3113 struct qeth_card *card = dev->ml_priv;
3114 int rc = 0;
3115
3116 QETH_CARD_TEXT(card, 4, "qethopen");
3117 if (card->state == CARD_STATE_UP)
3118 return rc;
3119 if (card->state != CARD_STATE_SOFTSETUP)
3120 return -ENODEV;
3121 card->data.state = CH_STATE_UP;
3122 card->state = CARD_STATE_UP;
3123 netif_start_queue(dev);
3124
3125 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3126 napi_enable(&card->napi);
3127 napi_schedule(&card->napi);
3128 } else
3129 rc = -EIO;
3130 return rc;
3131}
3132
3133static int qeth_l3_open(struct net_device *dev)
3134{
3135 struct qeth_card *card = dev->ml_priv;
3136
3137 QETH_CARD_TEXT(card, 5, "qethope_");
3138 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3139 QETH_CARD_TEXT(card, 3, "openREC");
3140 return -ERESTARTSYS;
3141 }
3142 return __qeth_l3_open(dev);
3143}
3144
3145static int qeth_l3_stop(struct net_device *dev)
3146{
3147 struct qeth_card *card = dev->ml_priv;
3148
3149 QETH_CARD_TEXT(card, 4, "qethstop");
3150 netif_tx_disable(dev);
3151 if (card->state == CARD_STATE_UP) {
3152 card->state = CARD_STATE_SOFTSETUP;
3153 napi_disable(&card->napi);
3154 }
3155 return 0;
3156}
3157
3158static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3159 netdev_features_t features)
3160{
3161 struct qeth_card *card = dev->ml_priv;
3162
3163 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3164 features &= ~NETIF_F_IP_CSUM;
3165 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3166 features &= ~NETIF_F_TSO;
3167 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3168 features &= ~NETIF_F_RXCSUM;
3169
3170 return features;
3171}
3172
3173static int qeth_l3_set_features(struct net_device *dev,
3174 netdev_features_t features)
3175{
3176 struct qeth_card *card = dev->ml_priv;
3177 u32 changed = dev->features ^ features;
3178 int err;
3179
3180 if (!(changed & NETIF_F_RXCSUM))
3181 return 0;
3182
3183 if (card->state == CARD_STATE_DOWN ||
3184 card->state == CARD_STATE_RECOVER)
3185 return 0;
3186
3187 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3188 if (err)
3189 dev->features = features ^ NETIF_F_RXCSUM;
3190
3191 return err;
3192}
3193
3194static const struct ethtool_ops qeth_l3_ethtool_ops = {
3195 .get_link = ethtool_op_get_link,
3196 .get_strings = qeth_core_get_strings,
3197 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3198 .get_sset_count = qeth_core_get_sset_count,
3199 .get_drvinfo = qeth_core_get_drvinfo,
3200 .get_settings = qeth_core_ethtool_get_settings,
3201};
3202
3203/*
3204 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3205 * NOARP on the netdevice is no option because it also turns off neighbor
3206 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3207 * arp resolution but we want the hard header (packet socket will work
3208 * e.g. tcpdump)
3209 */
3210static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3211{
3212 n->nud_state = NUD_NOARP;
3213 memcpy(n->ha, "FAKELL", 6);
3214 n->output = n->ops->connected_output;
3215 return 0;
3216}
3217
3218static int
3219qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3220{
3221 if (np->tbl->family == AF_INET)
3222 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3223
3224 return 0;
3225}
3226
3227static const struct net_device_ops qeth_l3_netdev_ops = {
3228 .ndo_open = qeth_l3_open,
3229 .ndo_stop = qeth_l3_stop,
3230 .ndo_get_stats = qeth_get_stats,
3231 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3232 .ndo_validate_addr = eth_validate_addr,
3233 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3234 .ndo_do_ioctl = qeth_l3_do_ioctl,
3235 .ndo_change_mtu = qeth_change_mtu,
3236 .ndo_fix_features = qeth_l3_fix_features,
3237 .ndo_set_features = qeth_l3_set_features,
3238 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3239 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3240 .ndo_tx_timeout = qeth_tx_timeout,
3241};
3242
3243static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3244 .ndo_open = qeth_l3_open,
3245 .ndo_stop = qeth_l3_stop,
3246 .ndo_get_stats = qeth_get_stats,
3247 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3248 .ndo_validate_addr = eth_validate_addr,
3249 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3250 .ndo_do_ioctl = qeth_l3_do_ioctl,
3251 .ndo_change_mtu = qeth_change_mtu,
3252 .ndo_fix_features = qeth_l3_fix_features,
3253 .ndo_set_features = qeth_l3_set_features,
3254 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3255 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3256 .ndo_tx_timeout = qeth_tx_timeout,
3257 .ndo_neigh_setup = qeth_l3_neigh_setup,
3258};
3259
3260static int qeth_l3_setup_netdev(struct qeth_card *card)
3261{
3262 if (card->info.type == QETH_CARD_TYPE_OSD ||
3263 card->info.type == QETH_CARD_TYPE_OSX) {
3264 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3265 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3266 pr_info("qeth_l3: ignoring TR device\n");
3267 return -ENODEV;
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 if (card->options.hsuid[0])
3294 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3295 } else
3296 return -ENODEV;
3297
3298 card->dev->ml_priv = card;
3299 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3300 card->dev->mtu = card->info.initial_mtu;
3301 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3302 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
3303 NETIF_F_HW_VLAN_CTAG_RX |
3304 NETIF_F_HW_VLAN_CTAG_FILTER;
3305 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3306 card->dev->gso_max_size = 15 * PAGE_SIZE;
3307
3308 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3309 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3310 return register_netdev(card->dev);
3311}
3312
3313static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3314{
3315 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3316
3317 qeth_l3_create_device_attributes(&gdev->dev);
3318 card->options.layer2 = 0;
3319 card->info.hwtrap = 0;
3320 return 0;
3321}
3322
3323static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3324{
3325 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3326
3327 qeth_l3_remove_device_attributes(&cgdev->dev);
3328
3329 qeth_set_allowed_threads(card, 0, 1);
3330 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3331
3332 if (cgdev->state == CCWGROUP_ONLINE)
3333 qeth_l3_set_offline(cgdev);
3334
3335 if (card->dev) {
3336 unregister_netdev(card->dev);
3337 card->dev = NULL;
3338 }
3339
3340 qeth_l3_clear_ip_list(card, 0);
3341 qeth_l3_clear_ipato_list(card);
3342 return;
3343}
3344
3345static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3346{
3347 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3348 int rc = 0;
3349 enum qeth_card_states recover_flag;
3350
3351 mutex_lock(&card->discipline_mutex);
3352 mutex_lock(&card->conf_mutex);
3353 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3354 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3355
3356 recover_flag = card->state;
3357 rc = qeth_core_hardsetup_card(card);
3358 if (rc) {
3359 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3360 rc = -ENODEV;
3361 goto out_remove;
3362 }
3363
3364 if (!card->dev && qeth_l3_setup_netdev(card)) {
3365 rc = -ENODEV;
3366 goto out_remove;
3367 }
3368
3369 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3370 if (card->info.hwtrap &&
3371 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3372 card->info.hwtrap = 0;
3373 } else
3374 card->info.hwtrap = 0;
3375
3376 card->state = CARD_STATE_HARDSETUP;
3377 memset(&card->rx, 0, sizeof(struct qeth_rx));
3378 qeth_print_status_message(card);
3379
3380 /* softsetup */
3381 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3382
3383 rc = qeth_send_startlan(card);
3384 if (rc) {
3385 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3386 if (rc == 0xe080) {
3387 dev_warn(&card->gdev->dev,
3388 "The LAN is offline\n");
3389 card->lan_online = 0;
3390 goto contin;
3391 }
3392 rc = -ENODEV;
3393 goto out_remove;
3394 } else
3395 card->lan_online = 1;
3396
3397contin:
3398 rc = qeth_l3_setadapter_parms(card);
3399 if (rc)
3400 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3401 if (!card->options.sniffer) {
3402 rc = qeth_l3_start_ipassists(card);
3403 if (rc) {
3404 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3405 goto out_remove;
3406 }
3407 rc = qeth_l3_setrouting_v4(card);
3408 if (rc)
3409 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3410 rc = qeth_l3_setrouting_v6(card);
3411 if (rc)
3412 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3413 }
3414 netif_tx_disable(card->dev);
3415
3416 rc = qeth_init_qdio_queues(card);
3417 if (rc) {
3418 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3419 rc = -ENODEV;
3420 goto out_remove;
3421 }
3422 card->state = CARD_STATE_SOFTSETUP;
3423
3424 qeth_set_allowed_threads(card, 0xffffffff, 0);
3425 qeth_l3_set_ip_addr_list(card);
3426 if (card->lan_online)
3427 netif_carrier_on(card->dev);
3428 else
3429 netif_carrier_off(card->dev);
3430 if (recover_flag == CARD_STATE_RECOVER) {
3431 rtnl_lock();
3432 if (recovery_mode)
3433 __qeth_l3_open(card->dev);
3434 else
3435 dev_open(card->dev);
3436 qeth_l3_set_multicast_list(card->dev);
3437 rtnl_unlock();
3438 }
3439 qeth_trace_features(card);
3440 /* let user_space know that device is online */
3441 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3442 mutex_unlock(&card->conf_mutex);
3443 mutex_unlock(&card->discipline_mutex);
3444 return 0;
3445out_remove:
3446 qeth_l3_stop_card(card, 0);
3447 ccw_device_set_offline(CARD_DDEV(card));
3448 ccw_device_set_offline(CARD_WDEV(card));
3449 ccw_device_set_offline(CARD_RDEV(card));
3450 qdio_free(CARD_DDEV(card));
3451 if (recover_flag == CARD_STATE_RECOVER)
3452 card->state = CARD_STATE_RECOVER;
3453 else
3454 card->state = CARD_STATE_DOWN;
3455 mutex_unlock(&card->conf_mutex);
3456 mutex_unlock(&card->discipline_mutex);
3457 return rc;
3458}
3459
3460static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3461{
3462 return __qeth_l3_set_online(gdev, 0);
3463}
3464
3465static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3466 int recovery_mode)
3467{
3468 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3469 int rc = 0, rc2 = 0, rc3 = 0;
3470 enum qeth_card_states recover_flag;
3471
3472 mutex_lock(&card->discipline_mutex);
3473 mutex_lock(&card->conf_mutex);
3474 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3475 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3476
3477 if (card->dev && netif_carrier_ok(card->dev))
3478 netif_carrier_off(card->dev);
3479 recover_flag = card->state;
3480 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3481 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3482 card->info.hwtrap = 1;
3483 }
3484 qeth_l3_stop_card(card, recovery_mode);
3485 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3486 rtnl_lock();
3487 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3488 rtnl_unlock();
3489 }
3490 rc = ccw_device_set_offline(CARD_DDEV(card));
3491 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3492 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3493 if (!rc)
3494 rc = (rc2) ? rc2 : rc3;
3495 if (rc)
3496 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3497 qdio_free(CARD_DDEV(card));
3498 if (recover_flag == CARD_STATE_UP)
3499 card->state = CARD_STATE_RECOVER;
3500 /* let user_space know that device is offline */
3501 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3502 mutex_unlock(&card->conf_mutex);
3503 mutex_unlock(&card->discipline_mutex);
3504 return 0;
3505}
3506
3507static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3508{
3509 return __qeth_l3_set_offline(cgdev, 0);
3510}
3511
3512static int qeth_l3_recover(void *ptr)
3513{
3514 struct qeth_card *card;
3515 int rc = 0;
3516
3517 card = (struct qeth_card *) ptr;
3518 QETH_CARD_TEXT(card, 2, "recover1");
3519 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3520 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3521 return 0;
3522 QETH_CARD_TEXT(card, 2, "recover2");
3523 dev_warn(&card->gdev->dev,
3524 "A recovery process has been started for the device\n");
3525 qeth_set_recovery_task(card);
3526 __qeth_l3_set_offline(card->gdev, 1);
3527 rc = __qeth_l3_set_online(card->gdev, 1);
3528 if (!rc)
3529 dev_info(&card->gdev->dev,
3530 "Device successfully recovered!\n");
3531 else {
3532 qeth_close_dev(card);
3533 dev_warn(&card->gdev->dev, "The qeth device driver "
3534 "failed to recover an error on the device\n");
3535 }
3536 qeth_clear_recovery_task(card);
3537 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3538 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3539 return 0;
3540}
3541
3542static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3543{
3544 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3545 qeth_set_allowed_threads(card, 0, 1);
3546 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3547 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3548 qeth_qdio_clear_card(card, 0);
3549 qeth_clear_qdio_buffers(card);
3550 qdio_free(CARD_DDEV(card));
3551}
3552
3553static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3554{
3555 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3556
3557 if (card->dev)
3558 netif_device_detach(card->dev);
3559 qeth_set_allowed_threads(card, 0, 1);
3560 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3561 if (gdev->state == CCWGROUP_OFFLINE)
3562 return 0;
3563 if (card->state == CARD_STATE_UP) {
3564 if (card->info.hwtrap)
3565 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3566 __qeth_l3_set_offline(card->gdev, 1);
3567 } else
3568 __qeth_l3_set_offline(card->gdev, 0);
3569 return 0;
3570}
3571
3572static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3573{
3574 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3575 int rc = 0;
3576
3577 if (gdev->state == CCWGROUP_OFFLINE)
3578 goto out;
3579
3580 if (card->state == CARD_STATE_RECOVER) {
3581 rc = __qeth_l3_set_online(card->gdev, 1);
3582 if (rc) {
3583 rtnl_lock();
3584 dev_close(card->dev);
3585 rtnl_unlock();
3586 }
3587 } else
3588 rc = __qeth_l3_set_online(card->gdev, 0);
3589out:
3590 qeth_set_allowed_threads(card, 0xffffffff, 0);
3591 if (card->dev)
3592 netif_device_attach(card->dev);
3593 if (rc)
3594 dev_warn(&card->gdev->dev, "The qeth device driver "
3595 "failed to recover an error on the device\n");
3596 return rc;
3597}
3598
3599/* Returns zero if the command is successfully "consumed" */
3600static int qeth_l3_control_event(struct qeth_card *card,
3601 struct qeth_ipa_cmd *cmd)
3602{
3603 return 1;
3604}
3605
3606struct qeth_discipline qeth_l3_discipline = {
3607 .start_poll = qeth_qdio_start_poll,
3608 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3609 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3610 .recover = qeth_l3_recover,
3611 .setup = qeth_l3_probe_device,
3612 .remove = qeth_l3_remove_device,
3613 .set_online = qeth_l3_set_online,
3614 .set_offline = qeth_l3_set_offline,
3615 .shutdown = qeth_l3_shutdown,
3616 .freeze = qeth_l3_pm_suspend,
3617 .thaw = qeth_l3_pm_resume,
3618 .restore = qeth_l3_pm_resume,
3619 .control_event_handler = qeth_l3_control_event,
3620};
3621EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3622
3623static int qeth_l3_ip_event(struct notifier_block *this,
3624 unsigned long event, void *ptr)
3625{
3626 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3627 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3628 struct qeth_ipaddr *addr;
3629 struct qeth_card *card;
3630
3631 if (dev_net(dev) != &init_net)
3632 return NOTIFY_DONE;
3633
3634 card = qeth_l3_get_card_from_dev(dev);
3635 if (!card)
3636 return NOTIFY_DONE;
3637 QETH_CARD_TEXT(card, 3, "ipevent");
3638
3639 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3640 if (addr != NULL) {
3641 addr->u.a4.addr = ifa->ifa_address;
3642 addr->u.a4.mask = ifa->ifa_mask;
3643 addr->type = QETH_IP_TYPE_NORMAL;
3644 } else
3645 goto out;
3646
3647 switch (event) {
3648 case NETDEV_UP:
3649 if (!qeth_l3_add_ip(card, addr))
3650 kfree(addr);
3651 break;
3652 case NETDEV_DOWN:
3653 if (!qeth_l3_delete_ip(card, addr))
3654 kfree(addr);
3655 break;
3656 default:
3657 break;
3658 }
3659 qeth_l3_set_ip_addr_list(card);
3660out:
3661 return NOTIFY_DONE;
3662}
3663
3664static struct notifier_block qeth_l3_ip_notifier = {
3665 qeth_l3_ip_event,
3666 NULL,
3667};
3668
3669#ifdef CONFIG_QETH_IPV6
3670/**
3671 * IPv6 event handler
3672 */
3673static int qeth_l3_ip6_event(struct notifier_block *this,
3674 unsigned long event, void *ptr)
3675{
3676 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3677 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3678 struct qeth_ipaddr *addr;
3679 struct qeth_card *card;
3680
3681 card = qeth_l3_get_card_from_dev(dev);
3682 if (!card)
3683 return NOTIFY_DONE;
3684 QETH_CARD_TEXT(card, 3, "ip6event");
3685 if (!qeth_is_supported(card, IPA_IPV6))
3686 return NOTIFY_DONE;
3687
3688 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3689 if (addr != NULL) {
3690 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3691 addr->u.a6.pfxlen = ifa->prefix_len;
3692 addr->type = QETH_IP_TYPE_NORMAL;
3693 } else
3694 goto out;
3695
3696 switch (event) {
3697 case NETDEV_UP:
3698 if (!qeth_l3_add_ip(card, addr))
3699 kfree(addr);
3700 break;
3701 case NETDEV_DOWN:
3702 if (!qeth_l3_delete_ip(card, addr))
3703 kfree(addr);
3704 break;
3705 default:
3706 break;
3707 }
3708 qeth_l3_set_ip_addr_list(card);
3709out:
3710 return NOTIFY_DONE;
3711}
3712
3713static struct notifier_block qeth_l3_ip6_notifier = {
3714 qeth_l3_ip6_event,
3715 NULL,
3716};
3717#endif
3718
3719static int qeth_l3_register_notifiers(void)
3720{
3721 int rc;
3722
3723 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3724 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3725 if (rc)
3726 return rc;
3727#ifdef CONFIG_QETH_IPV6
3728 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3729 if (rc) {
3730 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3731 return rc;
3732 }
3733#else
3734 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3735#endif
3736 return 0;
3737}
3738
3739static void qeth_l3_unregister_notifiers(void)
3740{
3741
3742 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3743 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3744#ifdef CONFIG_QETH_IPV6
3745 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3746#endif /* QETH_IPV6 */
3747}
3748
3749static int __init qeth_l3_init(void)
3750{
3751 int rc = 0;
3752
3753 pr_info("register layer 3 discipline\n");
3754 rc = qeth_l3_register_notifiers();
3755 return rc;
3756}
3757
3758static void __exit qeth_l3_exit(void)
3759{
3760 qeth_l3_unregister_notifiers();
3761 pr_info("unregister layer 3 discipline\n");
3762}
3763
3764module_init(qeth_l3_init);
3765module_exit(qeth_l3_exit);
3766MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3767MODULE_DESCRIPTION("qeth layer 3 discipline");
3768MODULE_LICENSE("GPL");