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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// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/bitops.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
19#include <linux/etherdevice.h>
20#include <linux/ip.h>
21#include <linux/in.h>
22#include <linux/ipv6.h>
23#include <linux/inetdevice.h>
24#include <linux/igmp.h>
25#include <linux/slab.h>
26#include <linux/if_ether.h>
27#include <linux/if_vlan.h>
28#include <linux/skbuff.h>
29
30#include <net/ip.h>
31#include <net/arp.h>
32#include <net/route.h>
33#include <net/ipv6.h>
34#include <net/ip6_route.h>
35#include <net/ip6_fib.h>
36#include <net/ip6_checksum.h>
37#include <net/iucv/af_iucv.h>
38#include <linux/hashtable.h>
39
40#include "qeth_l3.h"
41
42
43static int qeth_l3_set_offline(struct ccwgroup_device *);
44static int qeth_l3_stop(struct net_device *);
45static void qeth_l3_set_rx_mode(struct net_device *dev);
46static int qeth_l3_register_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
48static int qeth_l3_deregister_addr_entry(struct qeth_card *,
49 struct qeth_ipaddr *);
50
51static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
52{
53 sprintf(buf, "%pI4", addr);
54}
55
56static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
57{
58 sprintf(buf, "%pI6", addr);
59}
60
61void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
62 char *buf)
63{
64 if (proto == QETH_PROT_IPV4)
65 qeth_l3_ipaddr4_to_string(addr, buf);
66 else if (proto == QETH_PROT_IPV6)
67 qeth_l3_ipaddr6_to_string(addr, buf);
68}
69
70static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
71{
72 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
73
74 if (addr)
75 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
76 return addr;
77}
78
79static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
80 struct qeth_ipaddr *query)
81{
82 u64 key = qeth_l3_ipaddr_hash(query);
83 struct qeth_ipaddr *addr;
84
85 if (query->is_multicast) {
86 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
87 if (qeth_l3_addr_match_ip(addr, query))
88 return addr;
89 } else {
90 hash_for_each_possible(card->ip_htable, addr, hnode, key)
91 if (qeth_l3_addr_match_ip(addr, query))
92 return addr;
93 }
94 return NULL;
95}
96
97static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
98{
99 int i, j;
100 u8 octet;
101
102 for (i = 0; i < len; ++i) {
103 octet = addr[i];
104 for (j = 7; j >= 0; --j) {
105 bits[i*8 + j] = octet & 1;
106 octet >>= 1;
107 }
108 }
109}
110
111static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
112 struct qeth_ipaddr *addr)
113{
114 struct qeth_ipato_entry *ipatoe;
115 u8 addr_bits[128] = {0, };
116 u8 ipatoe_bits[128] = {0, };
117 int rc = 0;
118
119 if (!card->ipato.enabled)
120 return 0;
121 if (addr->type != QETH_IP_TYPE_NORMAL)
122 return 0;
123
124 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
125 (addr->proto == QETH_PROT_IPV4)? 4:16);
126 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
127 if (addr->proto != ipatoe->proto)
128 continue;
129 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
130 (ipatoe->proto == QETH_PROT_IPV4) ?
131 4 : 16);
132 if (addr->proto == QETH_PROT_IPV4)
133 rc = !memcmp(addr_bits, ipatoe_bits,
134 min(32, ipatoe->mask_bits));
135 else
136 rc = !memcmp(addr_bits, ipatoe_bits,
137 min(128, ipatoe->mask_bits));
138 if (rc)
139 break;
140 }
141 /* invert? */
142 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
143 rc = !rc;
144 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
145 rc = !rc;
146
147 return rc;
148}
149
150static int qeth_l3_delete_ip(struct qeth_card *card,
151 struct qeth_ipaddr *tmp_addr)
152{
153 int rc = 0;
154 struct qeth_ipaddr *addr;
155
156 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
157 QETH_CARD_TEXT(card, 2, "delrxip");
158 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
159 QETH_CARD_TEXT(card, 2, "delvipa");
160 else
161 QETH_CARD_TEXT(card, 2, "delip");
162
163 if (tmp_addr->proto == QETH_PROT_IPV4)
164 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
165 else {
166 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
167 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
168 }
169
170 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
171 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
172 return -ENOENT;
173
174 addr->ref_counter--;
175 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
176 return rc;
177 if (addr->in_progress)
178 return -EINPROGRESS;
179
180 if (qeth_card_hw_is_reachable(card))
181 rc = qeth_l3_deregister_addr_entry(card, addr);
182
183 hash_del(&addr->hnode);
184 kfree(addr);
185
186 return rc;
187}
188
189static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
190{
191 int rc = 0;
192 struct qeth_ipaddr *addr;
193 char buf[40];
194
195 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
196 QETH_CARD_TEXT(card, 2, "addrxip");
197 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
198 QETH_CARD_TEXT(card, 2, "addvipa");
199 else
200 QETH_CARD_TEXT(card, 2, "addip");
201
202 if (tmp_addr->proto == QETH_PROT_IPV4)
203 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
204 else {
205 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
206 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
207 }
208
209 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
210 if (addr) {
211 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
212 return -EADDRINUSE;
213 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
214 addr->ref_counter++;
215 return 0;
216 }
217 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
218 buf);
219 dev_warn(&card->gdev->dev,
220 "Registering IP address %s failed\n", buf);
221 return -EADDRINUSE;
222 } else {
223 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
224 if (!addr)
225 return -ENOMEM;
226
227 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
228 addr->ref_counter = 1;
229
230 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
231 QETH_CARD_TEXT(card, 2, "tkovaddr");
232 addr->ipato = 1;
233 }
234 hash_add(card->ip_htable, &addr->hnode,
235 qeth_l3_ipaddr_hash(addr));
236
237 if (!qeth_card_hw_is_reachable(card)) {
238 addr->disp_flag = QETH_DISP_ADDR_ADD;
239 return 0;
240 }
241
242 /* qeth_l3_register_addr_entry can go to sleep
243 * if we add a IPV4 addr. It is caused by the reason
244 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
245 * Thus we should unlock spinlock, and make a protection
246 * using in_progress variable to indicate that there is
247 * an hardware operation with this IPV4 address
248 */
249 if (addr->proto == QETH_PROT_IPV4) {
250 addr->in_progress = 1;
251 spin_unlock_bh(&card->ip_lock);
252 rc = qeth_l3_register_addr_entry(card, addr);
253 spin_lock_bh(&card->ip_lock);
254 addr->in_progress = 0;
255 } else
256 rc = qeth_l3_register_addr_entry(card, addr);
257
258 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
259 (rc == IPA_RC_LAN_OFFLINE)) {
260 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
261 if (addr->ref_counter < 1) {
262 qeth_l3_deregister_addr_entry(card, addr);
263 hash_del(&addr->hnode);
264 kfree(addr);
265 }
266 } else {
267 hash_del(&addr->hnode);
268 kfree(addr);
269 }
270 }
271 return rc;
272}
273
274static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
275{
276 struct qeth_ipaddr *addr;
277 struct hlist_node *tmp;
278 int i;
279
280 QETH_CARD_TEXT(card, 4, "clearip");
281
282 if (recover && card->options.sniffer)
283 return;
284
285 spin_lock_bh(&card->ip_lock);
286
287 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
288 if (!recover) {
289 hash_del(&addr->hnode);
290 kfree(addr);
291 continue;
292 }
293 addr->disp_flag = QETH_DISP_ADDR_ADD;
294 }
295
296 spin_unlock_bh(&card->ip_lock);
297
298 spin_lock_bh(&card->mclock);
299
300 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
301 hash_del(&addr->hnode);
302 kfree(addr);
303 }
304
305 spin_unlock_bh(&card->mclock);
306
307
308}
309static void qeth_l3_recover_ip(struct qeth_card *card)
310{
311 struct qeth_ipaddr *addr;
312 struct hlist_node *tmp;
313 int i;
314 int rc;
315
316 QETH_CARD_TEXT(card, 4, "recovrip");
317
318 spin_lock_bh(&card->ip_lock);
319
320 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
321 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
322 if (addr->proto == QETH_PROT_IPV4) {
323 addr->in_progress = 1;
324 spin_unlock_bh(&card->ip_lock);
325 rc = qeth_l3_register_addr_entry(card, addr);
326 spin_lock_bh(&card->ip_lock);
327 addr->in_progress = 0;
328 } else
329 rc = qeth_l3_register_addr_entry(card, addr);
330
331 if (!rc) {
332 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
333 if (addr->ref_counter < 1)
334 qeth_l3_delete_ip(card, addr);
335 } else {
336 hash_del(&addr->hnode);
337 kfree(addr);
338 }
339 }
340 }
341
342 spin_unlock_bh(&card->ip_lock);
343
344}
345
346static int qeth_l3_send_setdelmc(struct qeth_card *card,
347 struct qeth_ipaddr *addr, int ipacmd)
348{
349 int rc;
350 struct qeth_cmd_buffer *iob;
351 struct qeth_ipa_cmd *cmd;
352
353 QETH_CARD_TEXT(card, 4, "setdelmc");
354
355 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
356 if (!iob)
357 return -ENOMEM;
358 cmd = __ipa_cmd(iob);
359 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
360 if (addr->proto == QETH_PROT_IPV6)
361 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
362 sizeof(struct in6_addr));
363 else
364 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
365
366 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
367
368 return rc;
369}
370
371static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
372{
373 int i, j;
374 for (i = 0; i < 16; i++) {
375 j = (len) - (i * 8);
376 if (j >= 8)
377 netmask[i] = 0xff;
378 else if (j > 0)
379 netmask[i] = (u8)(0xFF00 >> j);
380 else
381 netmask[i] = 0;
382 }
383}
384
385static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
386{
387 switch (addr->type) {
388 case QETH_IP_TYPE_RXIP:
389 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
390 case QETH_IP_TYPE_VIPA:
391 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
392 QETH_IPA_DELIP_VIPA_FLAG;
393 default:
394 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
395 }
396}
397
398static int qeth_l3_send_setdelip(struct qeth_card *card,
399 struct qeth_ipaddr *addr,
400 enum qeth_ipa_cmds ipacmd)
401{
402 struct qeth_cmd_buffer *iob;
403 struct qeth_ipa_cmd *cmd;
404 __u8 netmask[16];
405 u32 flags;
406
407 QETH_CARD_TEXT(card, 4, "setdelip");
408
409 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
410 if (!iob)
411 return -ENOMEM;
412 cmd = __ipa_cmd(iob);
413
414 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
415 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
416
417 if (addr->proto == QETH_PROT_IPV6) {
418 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
419 sizeof(struct in6_addr));
420 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
421 memcpy(cmd->data.setdelip6.mask, netmask,
422 sizeof(struct in6_addr));
423 cmd->data.setdelip6.flags = flags;
424 } else {
425 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
426 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
427 cmd->data.setdelip4.flags = flags;
428 }
429
430 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
431}
432
433static int qeth_l3_send_setrouting(struct qeth_card *card,
434 enum qeth_routing_types type, enum qeth_prot_versions prot)
435{
436 int rc;
437 struct qeth_ipa_cmd *cmd;
438 struct qeth_cmd_buffer *iob;
439
440 QETH_CARD_TEXT(card, 4, "setroutg");
441 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
442 if (!iob)
443 return -ENOMEM;
444 cmd = __ipa_cmd(iob);
445 cmd->data.setrtg.type = (type);
446 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
447
448 return rc;
449}
450
451static int qeth_l3_correct_routing_type(struct qeth_card *card,
452 enum qeth_routing_types *type, enum qeth_prot_versions prot)
453{
454 if (card->info.type == QETH_CARD_TYPE_IQD) {
455 switch (*type) {
456 case NO_ROUTER:
457 case PRIMARY_CONNECTOR:
458 case SECONDARY_CONNECTOR:
459 case MULTICAST_ROUTER:
460 return 0;
461 default:
462 goto out_inval;
463 }
464 } else {
465 switch (*type) {
466 case NO_ROUTER:
467 case PRIMARY_ROUTER:
468 case SECONDARY_ROUTER:
469 return 0;
470 case MULTICAST_ROUTER:
471 if (qeth_is_ipafunc_supported(card, prot,
472 IPA_OSA_MC_ROUTER))
473 return 0;
474 default:
475 goto out_inval;
476 }
477 }
478out_inval:
479 *type = NO_ROUTER;
480 return -EINVAL;
481}
482
483int qeth_l3_setrouting_v4(struct qeth_card *card)
484{
485 int rc;
486
487 QETH_CARD_TEXT(card, 3, "setrtg4");
488
489 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
490 QETH_PROT_IPV4);
491 if (rc)
492 return rc;
493
494 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
495 QETH_PROT_IPV4);
496 if (rc) {
497 card->options.route4.type = NO_ROUTER;
498 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
499 " on %s. Type set to 'no router'.\n", rc,
500 QETH_CARD_IFNAME(card));
501 }
502 return rc;
503}
504
505int qeth_l3_setrouting_v6(struct qeth_card *card)
506{
507 int rc = 0;
508
509 QETH_CARD_TEXT(card, 3, "setrtg6");
510
511 if (!qeth_is_supported(card, IPA_IPV6))
512 return 0;
513 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
514 QETH_PROT_IPV6);
515 if (rc)
516 return rc;
517
518 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
519 QETH_PROT_IPV6);
520 if (rc) {
521 card->options.route6.type = NO_ROUTER;
522 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
523 " on %s. Type set to 'no router'.\n", rc,
524 QETH_CARD_IFNAME(card));
525 }
526 return rc;
527}
528
529/*
530 * IP address takeover related functions
531 */
532
533/**
534 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
535 *
536 * Caller must hold ip_lock.
537 */
538void qeth_l3_update_ipato(struct qeth_card *card)
539{
540 struct qeth_ipaddr *addr;
541 unsigned int i;
542
543 hash_for_each(card->ip_htable, i, addr, hnode) {
544 if (addr->type != QETH_IP_TYPE_NORMAL)
545 continue;
546 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
547 }
548}
549
550static void qeth_l3_clear_ipato_list(struct qeth_card *card)
551{
552 struct qeth_ipato_entry *ipatoe, *tmp;
553
554 spin_lock_bh(&card->ip_lock);
555
556 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
557 list_del(&ipatoe->entry);
558 kfree(ipatoe);
559 }
560
561 qeth_l3_update_ipato(card);
562 spin_unlock_bh(&card->ip_lock);
563}
564
565int qeth_l3_add_ipato_entry(struct qeth_card *card,
566 struct qeth_ipato_entry *new)
567{
568 struct qeth_ipato_entry *ipatoe;
569 int rc = 0;
570
571 QETH_CARD_TEXT(card, 2, "addipato");
572
573 spin_lock_bh(&card->ip_lock);
574
575 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
576 if (ipatoe->proto != new->proto)
577 continue;
578 if (!memcmp(ipatoe->addr, new->addr,
579 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
580 (ipatoe->mask_bits == new->mask_bits)) {
581 rc = -EEXIST;
582 break;
583 }
584 }
585
586 if (!rc) {
587 list_add_tail(&new->entry, &card->ipato.entries);
588 qeth_l3_update_ipato(card);
589 }
590
591 spin_unlock_bh(&card->ip_lock);
592
593 return rc;
594}
595
596int qeth_l3_del_ipato_entry(struct qeth_card *card,
597 enum qeth_prot_versions proto, u8 *addr,
598 int mask_bits)
599{
600 struct qeth_ipato_entry *ipatoe, *tmp;
601 int rc = -ENOENT;
602
603 QETH_CARD_TEXT(card, 2, "delipato");
604
605 spin_lock_bh(&card->ip_lock);
606
607 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
608 if (ipatoe->proto != proto)
609 continue;
610 if (!memcmp(ipatoe->addr, addr,
611 (proto == QETH_PROT_IPV4)? 4:16) &&
612 (ipatoe->mask_bits == mask_bits)) {
613 list_del(&ipatoe->entry);
614 qeth_l3_update_ipato(card);
615 kfree(ipatoe);
616 rc = 0;
617 }
618 }
619
620 spin_unlock_bh(&card->ip_lock);
621 return rc;
622}
623
624int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
625 enum qeth_ip_types type,
626 enum qeth_prot_versions proto)
627{
628 struct qeth_ipaddr addr;
629 int rc;
630
631 qeth_l3_init_ipaddr(&addr, type, proto);
632 if (proto == QETH_PROT_IPV4)
633 memcpy(&addr.u.a4.addr, ip, 4);
634 else
635 memcpy(&addr.u.a6.addr, ip, 16);
636
637 spin_lock_bh(&card->ip_lock);
638 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
639 spin_unlock_bh(&card->ip_lock);
640 return rc;
641}
642
643int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
644{
645 struct qeth_ipaddr addr;
646 int rc, i;
647
648 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
649 addr.u.a6.addr.s6_addr[0] = 0xfe;
650 addr.u.a6.addr.s6_addr[1] = 0x80;
651 for (i = 0; i < 8; i++)
652 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
653
654 spin_lock_bh(&card->ip_lock);
655 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
656 spin_unlock_bh(&card->ip_lock);
657 return rc;
658}
659
660static int qeth_l3_register_addr_entry(struct qeth_card *card,
661 struct qeth_ipaddr *addr)
662{
663 char buf[50];
664 int rc = 0;
665 int cnt = 3;
666
667
668 if (addr->proto == QETH_PROT_IPV4) {
669 QETH_CARD_TEXT(card, 2, "setaddr4");
670 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
671 } else if (addr->proto == QETH_PROT_IPV6) {
672 QETH_CARD_TEXT(card, 2, "setaddr6");
673 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
674 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
675 } else {
676 QETH_CARD_TEXT(card, 2, "setaddr?");
677 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
678 }
679 do {
680 if (addr->is_multicast)
681 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
682 else
683 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
684 if (rc)
685 QETH_CARD_TEXT(card, 2, "failed");
686 } while ((--cnt > 0) && rc);
687 if (rc) {
688 QETH_CARD_TEXT(card, 2, "FAILED");
689 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
690 dev_warn(&card->gdev->dev,
691 "Registering IP address %s failed\n", buf);
692 }
693 return rc;
694}
695
696static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
697 struct qeth_ipaddr *addr)
698{
699 int rc = 0;
700
701 if (addr->proto == QETH_PROT_IPV4) {
702 QETH_CARD_TEXT(card, 2, "deladdr4");
703 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
704 } else if (addr->proto == QETH_PROT_IPV6) {
705 QETH_CARD_TEXT(card, 2, "deladdr6");
706 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
707 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
708 } else {
709 QETH_CARD_TEXT(card, 2, "deladdr?");
710 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
711 }
712 if (addr->is_multicast)
713 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
714 else
715 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
716 if (rc)
717 QETH_CARD_TEXT(card, 2, "failed");
718
719 return rc;
720}
721
722static int qeth_l3_setadapter_parms(struct qeth_card *card)
723{
724 int rc = 0;
725
726 QETH_DBF_TEXT(SETUP, 2, "setadprm");
727
728 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
729 rc = qeth_setadpparms_change_macaddr(card);
730 if (rc)
731 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
732 " address failed\n");
733 }
734
735 return rc;
736}
737
738static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
739 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
740{
741 int rc;
742 struct qeth_cmd_buffer *iob;
743
744 QETH_CARD_TEXT(card, 4, "simassp6");
745 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
746 0, QETH_PROT_IPV6);
747 if (!iob)
748 return -ENOMEM;
749 rc = qeth_send_setassparms(card, iob, 0, 0,
750 qeth_setassparms_cb, NULL);
751 return rc;
752}
753
754static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
755{
756 int rc;
757
758 QETH_CARD_TEXT(card, 3, "ipaarp");
759
760 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
761 dev_info(&card->gdev->dev,
762 "ARP processing not supported on %s!\n",
763 QETH_CARD_IFNAME(card));
764 return 0;
765 }
766 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
767 IPA_CMD_ASS_START, 0);
768 if (rc) {
769 dev_warn(&card->gdev->dev,
770 "Starting ARP processing support for %s failed\n",
771 QETH_CARD_IFNAME(card));
772 }
773 return rc;
774}
775
776static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
777{
778 int rc;
779
780 QETH_CARD_TEXT(card, 3, "stsrcmac");
781
782 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
783 dev_info(&card->gdev->dev,
784 "Inbound source MAC-address not supported on %s\n",
785 QETH_CARD_IFNAME(card));
786 return -EOPNOTSUPP;
787 }
788
789 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
790 IPA_CMD_ASS_START, 0);
791 if (rc)
792 dev_warn(&card->gdev->dev,
793 "Starting source MAC-address support for %s failed\n",
794 QETH_CARD_IFNAME(card));
795 return rc;
796}
797
798static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
799{
800 int rc = 0;
801
802 QETH_CARD_TEXT(card, 3, "strtvlan");
803
804 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
805 dev_info(&card->gdev->dev,
806 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
807 return -EOPNOTSUPP;
808 }
809
810 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
811 IPA_CMD_ASS_START, 0);
812 if (rc) {
813 dev_warn(&card->gdev->dev,
814 "Starting VLAN support for %s failed\n",
815 QETH_CARD_IFNAME(card));
816 } else {
817 dev_info(&card->gdev->dev, "VLAN enabled\n");
818 }
819 return rc;
820}
821
822static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
823{
824 int rc;
825
826 QETH_CARD_TEXT(card, 3, "stmcast");
827
828 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
829 dev_info(&card->gdev->dev,
830 "Multicast not supported on %s\n",
831 QETH_CARD_IFNAME(card));
832 return -EOPNOTSUPP;
833 }
834
835 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
836 IPA_CMD_ASS_START, 0);
837 if (rc) {
838 dev_warn(&card->gdev->dev,
839 "Starting multicast support for %s failed\n",
840 QETH_CARD_IFNAME(card));
841 } else {
842 dev_info(&card->gdev->dev, "Multicast enabled\n");
843 card->dev->flags |= IFF_MULTICAST;
844 }
845 return rc;
846}
847
848static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
849{
850 int rc;
851
852 QETH_CARD_TEXT(card, 3, "softipv6");
853
854 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
855 if (rc) {
856 dev_err(&card->gdev->dev,
857 "Activating IPv6 support for %s failed\n",
858 QETH_CARD_IFNAME(card));
859 return rc;
860 }
861
862 if (card->info.type == QETH_CARD_TYPE_IQD)
863 goto out;
864
865 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
866 IPA_CMD_ASS_START, 3);
867 if (rc) {
868 dev_err(&card->gdev->dev,
869 "Activating IPv6 support for %s failed\n",
870 QETH_CARD_IFNAME(card));
871 return rc;
872 }
873 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
874 IPA_CMD_ASS_START);
875 if (rc) {
876 dev_err(&card->gdev->dev,
877 "Activating IPv6 support for %s failed\n",
878 QETH_CARD_IFNAME(card));
879 return rc;
880 }
881 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
882 IPA_CMD_ASS_START);
883 if (rc) {
884 dev_warn(&card->gdev->dev,
885 "Enabling the passthrough mode for %s failed\n",
886 QETH_CARD_IFNAME(card));
887 return rc;
888 }
889out:
890 dev_info(&card->gdev->dev, "IPV6 enabled\n");
891 return 0;
892}
893
894static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
895{
896 QETH_CARD_TEXT(card, 3, "strtipv6");
897
898 if (!qeth_is_supported(card, IPA_IPV6)) {
899 dev_info(&card->gdev->dev,
900 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
901 return 0;
902 }
903 return qeth_l3_softsetup_ipv6(card);
904}
905
906static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
907{
908 int rc;
909
910 QETH_CARD_TEXT(card, 3, "stbrdcst");
911 card->info.broadcast_capable = 0;
912 if (!qeth_is_supported(card, IPA_FILTERING)) {
913 dev_info(&card->gdev->dev,
914 "Broadcast not supported on %s\n",
915 QETH_CARD_IFNAME(card));
916 rc = -EOPNOTSUPP;
917 goto out;
918 }
919 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
920 IPA_CMD_ASS_START, 0);
921 if (rc) {
922 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
923 "%s failed\n", QETH_CARD_IFNAME(card));
924 goto out;
925 }
926
927 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
928 IPA_CMD_ASS_CONFIGURE, 1);
929 if (rc) {
930 dev_warn(&card->gdev->dev,
931 "Setting up broadcast filtering for %s failed\n",
932 QETH_CARD_IFNAME(card));
933 goto out;
934 }
935 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
936 dev_info(&card->gdev->dev, "Broadcast enabled\n");
937 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
938 IPA_CMD_ASS_ENABLE, 1);
939 if (rc) {
940 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
941 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
942 goto out;
943 }
944 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
945out:
946 if (card->info.broadcast_capable)
947 card->dev->flags |= IFF_BROADCAST;
948 else
949 card->dev->flags &= ~IFF_BROADCAST;
950 return rc;
951}
952
953static int qeth_l3_start_ipassists(struct qeth_card *card)
954{
955 QETH_CARD_TEXT(card, 3, "strtipas");
956
957 if (qeth_set_access_ctrl_online(card, 0))
958 return -EIO;
959 qeth_l3_start_ipa_arp_processing(card); /* go on*/
960 qeth_l3_start_ipa_source_mac(card); /* go on*/
961 qeth_l3_start_ipa_vlan(card); /* go on*/
962 qeth_l3_start_ipa_multicast(card); /* go on*/
963 qeth_l3_start_ipa_ipv6(card); /* go on*/
964 qeth_l3_start_ipa_broadcast(card); /* go on*/
965 return 0;
966}
967
968static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
969 struct qeth_reply *reply, unsigned long data)
970{
971 struct qeth_ipa_cmd *cmd;
972
973 cmd = (struct qeth_ipa_cmd *) data;
974 if (cmd->hdr.return_code == 0)
975 ether_addr_copy(card->dev->dev_addr,
976 cmd->data.create_destroy_addr.unique_id);
977 else
978 eth_random_addr(card->dev->dev_addr);
979
980 return 0;
981}
982
983static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
984{
985 int rc = 0;
986 struct qeth_cmd_buffer *iob;
987 struct qeth_ipa_cmd *cmd;
988
989 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
990
991 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
992 QETH_PROT_IPV6);
993 if (!iob)
994 return -ENOMEM;
995 cmd = __ipa_cmd(iob);
996 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
997 card->info.unique_id;
998
999 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1000 NULL);
1001 return rc;
1002}
1003
1004static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1005 struct qeth_reply *reply, unsigned long data)
1006{
1007 struct qeth_ipa_cmd *cmd;
1008
1009 cmd = (struct qeth_ipa_cmd *) data;
1010 if (cmd->hdr.return_code == 0)
1011 card->info.unique_id = *((__u16 *)
1012 &cmd->data.create_destroy_addr.unique_id[6]);
1013 else {
1014 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1015 UNIQUE_ID_NOT_BY_CARD;
1016 dev_warn(&card->gdev->dev, "The network adapter failed to "
1017 "generate a unique ID\n");
1018 }
1019 return 0;
1020}
1021
1022static int qeth_l3_get_unique_id(struct qeth_card *card)
1023{
1024 int rc = 0;
1025 struct qeth_cmd_buffer *iob;
1026 struct qeth_ipa_cmd *cmd;
1027
1028 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1029
1030 if (!qeth_is_supported(card, IPA_IPV6)) {
1031 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1032 UNIQUE_ID_NOT_BY_CARD;
1033 return 0;
1034 }
1035
1036 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1037 QETH_PROT_IPV6);
1038 if (!iob)
1039 return -ENOMEM;
1040 cmd = __ipa_cmd(iob);
1041 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1042 card->info.unique_id;
1043
1044 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1045 return rc;
1046}
1047
1048static int
1049qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1050 unsigned long data)
1051{
1052 struct qeth_ipa_cmd *cmd;
1053 __u16 rc;
1054
1055 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1056
1057 cmd = (struct qeth_ipa_cmd *)data;
1058 rc = cmd->hdr.return_code;
1059 if (rc)
1060 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1061 switch (cmd->data.diagass.action) {
1062 case QETH_DIAGS_CMD_TRACE_QUERY:
1063 break;
1064 case QETH_DIAGS_CMD_TRACE_DISABLE:
1065 switch (rc) {
1066 case 0:
1067 case IPA_RC_INVALID_SUBCMD:
1068 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1069 dev_info(&card->gdev->dev, "The HiperSockets network "
1070 "traffic analyzer is deactivated\n");
1071 break;
1072 default:
1073 break;
1074 }
1075 break;
1076 case QETH_DIAGS_CMD_TRACE_ENABLE:
1077 switch (rc) {
1078 case 0:
1079 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1080 dev_info(&card->gdev->dev, "The HiperSockets network "
1081 "traffic analyzer is activated\n");
1082 break;
1083 case IPA_RC_HARDWARE_AUTH_ERROR:
1084 dev_warn(&card->gdev->dev, "The device is not "
1085 "authorized to run as a HiperSockets network "
1086 "traffic analyzer\n");
1087 break;
1088 case IPA_RC_TRACE_ALREADY_ACTIVE:
1089 dev_warn(&card->gdev->dev, "A HiperSockets "
1090 "network traffic analyzer is already "
1091 "active in the HiperSockets LAN\n");
1092 break;
1093 default:
1094 break;
1095 }
1096 break;
1097 default:
1098 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1099 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1100 }
1101
1102 return 0;
1103}
1104
1105static int
1106qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1107{
1108 struct qeth_cmd_buffer *iob;
1109 struct qeth_ipa_cmd *cmd;
1110
1111 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1112
1113 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1114 if (!iob)
1115 return -ENOMEM;
1116 cmd = __ipa_cmd(iob);
1117 cmd->data.diagass.subcmd_len = 16;
1118 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1119 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1120 cmd->data.diagass.action = diags_cmd;
1121 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1122}
1123
1124static void
1125qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1126{
1127 struct ip_mc_list *im4;
1128 struct qeth_ipaddr *tmp, *ipm;
1129
1130 QETH_CARD_TEXT(card, 4, "addmc");
1131
1132 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1133 if (!tmp)
1134 return;
1135
1136 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1137 im4 = rcu_dereference(im4->next_rcu)) {
1138 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1139 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1140 tmp->is_multicast = 1;
1141
1142 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1143 if (ipm) {
1144 /* for mcast, by-IP match means full match */
1145 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1146 } else {
1147 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1148 if (!ipm)
1149 continue;
1150 ether_addr_copy(ipm->mac, tmp->mac);
1151 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1152 ipm->is_multicast = 1;
1153 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1154 hash_add(card->ip_mc_htable,
1155 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1156 }
1157 }
1158
1159 kfree(tmp);
1160}
1161
1162/* called with rcu_read_lock */
1163static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1164{
1165 struct in_device *in_dev;
1166 u16 vid;
1167
1168 QETH_CARD_TEXT(card, 4, "addmcvl");
1169
1170 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1171 return;
1172
1173 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1174 struct net_device *netdev;
1175
1176 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1177 vid);
1178 if (netdev == NULL ||
1179 !(netdev->flags & IFF_UP))
1180 continue;
1181 in_dev = __in_dev_get_rcu(netdev);
1182 if (!in_dev)
1183 continue;
1184 qeth_l3_add_mc_to_hash(card, in_dev);
1185 }
1186}
1187
1188static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1189{
1190 struct in_device *in4_dev;
1191
1192 QETH_CARD_TEXT(card, 4, "chkmcv4");
1193
1194 rcu_read_lock();
1195 in4_dev = __in_dev_get_rcu(card->dev);
1196 if (in4_dev == NULL)
1197 goto unlock;
1198 qeth_l3_add_mc_to_hash(card, in4_dev);
1199 qeth_l3_add_vlan_mc(card);
1200unlock:
1201 rcu_read_unlock();
1202}
1203
1204static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1205 struct inet6_dev *in6_dev)
1206{
1207 struct qeth_ipaddr *ipm;
1208 struct ifmcaddr6 *im6;
1209 struct qeth_ipaddr *tmp;
1210
1211 QETH_CARD_TEXT(card, 4, "addmc6");
1212
1213 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1214 if (!tmp)
1215 return;
1216
1217 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1218 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1219 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1220 sizeof(struct in6_addr));
1221 tmp->is_multicast = 1;
1222
1223 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1224 if (ipm) {
1225 /* for mcast, by-IP match means full match */
1226 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1227 continue;
1228 }
1229
1230 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1231 if (!ipm)
1232 continue;
1233
1234 ether_addr_copy(ipm->mac, tmp->mac);
1235 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1236 sizeof(struct in6_addr));
1237 ipm->is_multicast = 1;
1238 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1239 hash_add(card->ip_mc_htable,
1240 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1241
1242 }
1243 kfree(tmp);
1244}
1245
1246/* called with rcu_read_lock */
1247static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1248{
1249 struct inet6_dev *in_dev;
1250 u16 vid;
1251
1252 QETH_CARD_TEXT(card, 4, "admc6vl");
1253
1254 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1255 return;
1256
1257 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1258 struct net_device *netdev;
1259
1260 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1261 vid);
1262 if (netdev == NULL ||
1263 !(netdev->flags & IFF_UP))
1264 continue;
1265 in_dev = in6_dev_get(netdev);
1266 if (!in_dev)
1267 continue;
1268 read_lock_bh(&in_dev->lock);
1269 qeth_l3_add_mc6_to_hash(card, in_dev);
1270 read_unlock_bh(&in_dev->lock);
1271 in6_dev_put(in_dev);
1272 }
1273}
1274
1275static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1276{
1277 struct inet6_dev *in6_dev;
1278
1279 QETH_CARD_TEXT(card, 4, "chkmcv6");
1280
1281 if (!qeth_is_supported(card, IPA_IPV6))
1282 return ;
1283 in6_dev = in6_dev_get(card->dev);
1284 if (!in6_dev)
1285 return;
1286
1287 rcu_read_lock();
1288 read_lock_bh(&in6_dev->lock);
1289 qeth_l3_add_mc6_to_hash(card, in6_dev);
1290 qeth_l3_add_vlan_mc6(card);
1291 read_unlock_bh(&in6_dev->lock);
1292 rcu_read_unlock();
1293 in6_dev_put(in6_dev);
1294}
1295
1296static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1297 unsigned short vid)
1298{
1299 struct in_device *in_dev;
1300 struct in_ifaddr *ifa;
1301 struct qeth_ipaddr *addr;
1302 struct net_device *netdev;
1303
1304 QETH_CARD_TEXT(card, 4, "frvaddr4");
1305
1306 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1307 if (!netdev)
1308 return;
1309 in_dev = in_dev_get(netdev);
1310 if (!in_dev)
1311 return;
1312
1313 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1314 if (!addr)
1315 goto out;
1316
1317 spin_lock_bh(&card->ip_lock);
1318
1319 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1320 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
1321 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
1322 addr->type = QETH_IP_TYPE_NORMAL;
1323 qeth_l3_delete_ip(card, addr);
1324 }
1325
1326 spin_unlock_bh(&card->ip_lock);
1327
1328 kfree(addr);
1329out:
1330 in_dev_put(in_dev);
1331}
1332
1333static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1334 unsigned short vid)
1335{
1336 struct inet6_dev *in6_dev;
1337 struct inet6_ifaddr *ifa;
1338 struct qeth_ipaddr *addr;
1339 struct net_device *netdev;
1340
1341 QETH_CARD_TEXT(card, 4, "frvaddr6");
1342
1343 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1344 if (!netdev)
1345 return;
1346
1347 in6_dev = in6_dev_get(netdev);
1348 if (!in6_dev)
1349 return;
1350
1351 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1352 if (!addr)
1353 goto out;
1354
1355 spin_lock_bh(&card->ip_lock);
1356
1357 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1358 memcpy(&addr->u.a6.addr, &ifa->addr,
1359 sizeof(struct in6_addr));
1360 addr->u.a6.pfxlen = ifa->prefix_len;
1361 addr->type = QETH_IP_TYPE_NORMAL;
1362 qeth_l3_delete_ip(card, addr);
1363 }
1364
1365 spin_unlock_bh(&card->ip_lock);
1366
1367 kfree(addr);
1368out:
1369 in6_dev_put(in6_dev);
1370}
1371
1372static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1373 unsigned short vid)
1374{
1375 rcu_read_lock();
1376 qeth_l3_free_vlan_addresses4(card, vid);
1377 qeth_l3_free_vlan_addresses6(card, vid);
1378 rcu_read_unlock();
1379}
1380
1381static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1382 __be16 proto, u16 vid)
1383{
1384 struct qeth_card *card = dev->ml_priv;
1385
1386 set_bit(vid, card->active_vlans);
1387 return 0;
1388}
1389
1390static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1391 __be16 proto, u16 vid)
1392{
1393 struct qeth_card *card = dev->ml_priv;
1394
1395 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1396
1397 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1398 QETH_CARD_TEXT(card, 3, "kidREC");
1399 return 0;
1400 }
1401 /* unregister IP addresses of vlan device */
1402 qeth_l3_free_vlan_addresses(card, vid);
1403 clear_bit(vid, card->active_vlans);
1404 qeth_l3_set_rx_mode(dev);
1405 return 0;
1406}
1407
1408static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1409 struct qeth_hdr *hdr)
1410{
1411 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1412 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1413 ETH_P_IP;
1414 unsigned char tg_addr[ETH_ALEN];
1415
1416 skb_reset_network_header(skb);
1417 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1418 case QETH_CAST_MULTICAST:
1419 if (prot == ETH_P_IP)
1420 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1421 else
1422 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1423
1424 card->stats.multicast++;
1425 break;
1426 case QETH_CAST_BROADCAST:
1427 ether_addr_copy(tg_addr, card->dev->broadcast);
1428 card->stats.multicast++;
1429 break;
1430 default:
1431 if (card->options.sniffer)
1432 skb->pkt_type = PACKET_OTHERHOST;
1433 ether_addr_copy(tg_addr, card->dev->dev_addr);
1434 }
1435
1436 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1437 card->dev->header_ops->create(skb, card->dev, prot,
1438 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1439 skb->len);
1440 else
1441 card->dev->header_ops->create(skb, card->dev, prot,
1442 tg_addr, "FAKELL", skb->len);
1443 }
1444
1445 skb->protocol = eth_type_trans(skb, card->dev);
1446
1447 /* copy VLAN tag from hdr into skb */
1448 if (!card->options.sniffer &&
1449 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1450 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1451 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1452 hdr->hdr.l3.vlan_id :
1453 hdr->hdr.l3.next_hop.rx.vlan_id;
1454 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1455 }
1456
1457 if (card->dev->features & NETIF_F_RXCSUM) {
1458 if ((hdr->hdr.l3.ext_flags &
1459 (QETH_HDR_EXT_CSUM_HDR_REQ |
1460 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1461 (QETH_HDR_EXT_CSUM_HDR_REQ |
1462 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1463 skb->ip_summed = CHECKSUM_UNNECESSARY;
1464 else
1465 skb->ip_summed = CHECKSUM_NONE;
1466 } else
1467 skb->ip_summed = CHECKSUM_NONE;
1468}
1469
1470static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1471 int budget, int *done)
1472{
1473 int work_done = 0;
1474 struct sk_buff *skb;
1475 struct qeth_hdr *hdr;
1476 unsigned int len;
1477 __u16 magic;
1478
1479 *done = 0;
1480 WARN_ON_ONCE(!budget);
1481 while (budget) {
1482 skb = qeth_core_get_next_skb(card,
1483 &card->qdio.in_q->bufs[card->rx.b_index],
1484 &card->rx.b_element, &card->rx.e_offset, &hdr);
1485 if (!skb) {
1486 *done = 1;
1487 break;
1488 }
1489 switch (hdr->hdr.l3.id) {
1490 case QETH_HEADER_TYPE_LAYER3:
1491 magic = *(__u16 *)skb->data;
1492 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1493 (magic == ETH_P_AF_IUCV)) {
1494 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1495 len = skb->len;
1496 card->dev->header_ops->create(skb, card->dev, 0,
1497 card->dev->dev_addr, "FAKELL", len);
1498 skb_reset_mac_header(skb);
1499 netif_receive_skb(skb);
1500 } else {
1501 qeth_l3_rebuild_skb(card, skb, hdr);
1502 len = skb->len;
1503 napi_gro_receive(&card->napi, skb);
1504 }
1505 break;
1506 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1507 skb->protocol = eth_type_trans(skb, skb->dev);
1508 len = skb->len;
1509 netif_receive_skb(skb);
1510 break;
1511 default:
1512 dev_kfree_skb_any(skb);
1513 QETH_CARD_TEXT(card, 3, "inbunkno");
1514 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1515 continue;
1516 }
1517 work_done++;
1518 budget--;
1519 card->stats.rx_packets++;
1520 card->stats.rx_bytes += len;
1521 }
1522 return work_done;
1523}
1524
1525static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1526{
1527 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1528 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1529
1530 qeth_set_allowed_threads(card, 0, 1);
1531 if (card->options.sniffer &&
1532 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1533 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1534 if (card->read.state == CH_STATE_UP &&
1535 card->write.state == CH_STATE_UP &&
1536 (card->state == CARD_STATE_UP)) {
1537 if (recovery_mode)
1538 qeth_l3_stop(card->dev);
1539 else {
1540 rtnl_lock();
1541 dev_close(card->dev);
1542 rtnl_unlock();
1543 }
1544 card->state = CARD_STATE_SOFTSETUP;
1545 }
1546 if (card->state == CARD_STATE_SOFTSETUP) {
1547 qeth_l3_clear_ip_htable(card, 1);
1548 qeth_clear_ipacmd_list(card);
1549 card->state = CARD_STATE_HARDSETUP;
1550 }
1551 if (card->state == CARD_STATE_HARDSETUP) {
1552 qeth_qdio_clear_card(card, 0);
1553 qeth_clear_qdio_buffers(card);
1554 qeth_clear_working_pool_list(card);
1555 card->state = CARD_STATE_DOWN;
1556 }
1557 if (card->state == CARD_STATE_DOWN) {
1558 qeth_clear_cmd_buffers(&card->read);
1559 qeth_clear_cmd_buffers(&card->write);
1560 }
1561}
1562
1563/*
1564 * test for and Switch promiscuous mode (on or off)
1565 * either for guestlan or HiperSocket Sniffer
1566 */
1567static void
1568qeth_l3_handle_promisc_mode(struct qeth_card *card)
1569{
1570 struct net_device *dev = card->dev;
1571
1572 if (((dev->flags & IFF_PROMISC) &&
1573 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1574 (!(dev->flags & IFF_PROMISC) &&
1575 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1576 return;
1577
1578 if (card->info.guestlan) { /* Guestlan trace */
1579 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1580 qeth_setadp_promisc_mode(card);
1581 } else if (card->options.sniffer && /* HiperSockets trace */
1582 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1583 if (dev->flags & IFF_PROMISC) {
1584 QETH_CARD_TEXT(card, 3, "+promisc");
1585 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1586 } else {
1587 QETH_CARD_TEXT(card, 3, "-promisc");
1588 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1589 }
1590 }
1591}
1592
1593static void qeth_l3_set_rx_mode(struct net_device *dev)
1594{
1595 struct qeth_card *card = dev->ml_priv;
1596 struct qeth_ipaddr *addr;
1597 struct hlist_node *tmp;
1598 int i, rc;
1599
1600 QETH_CARD_TEXT(card, 3, "setmulti");
1601 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1602 (card->state != CARD_STATE_UP))
1603 return;
1604 if (!card->options.sniffer) {
1605 spin_lock_bh(&card->mclock);
1606
1607 qeth_l3_add_multicast_ipv4(card);
1608 qeth_l3_add_multicast_ipv6(card);
1609
1610 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1611 switch (addr->disp_flag) {
1612 case QETH_DISP_ADDR_DELETE:
1613 rc = qeth_l3_deregister_addr_entry(card, addr);
1614 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) {
1615 hash_del(&addr->hnode);
1616 kfree(addr);
1617 }
1618 break;
1619 case QETH_DISP_ADDR_ADD:
1620 rc = qeth_l3_register_addr_entry(card, addr);
1621 if (rc && rc != IPA_RC_LAN_OFFLINE) {
1622 hash_del(&addr->hnode);
1623 kfree(addr);
1624 break;
1625 }
1626 addr->ref_counter = 1;
1627 /* fall through */
1628 default:
1629 /* for next call to set_rx_mode(): */
1630 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1631 }
1632 }
1633
1634 spin_unlock_bh(&card->mclock);
1635
1636 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1637 return;
1638 }
1639 qeth_l3_handle_promisc_mode(card);
1640}
1641
1642static const char *qeth_l3_arp_get_error_cause(int *rc)
1643{
1644 switch (*rc) {
1645 case QETH_IPA_ARP_RC_FAILED:
1646 *rc = -EIO;
1647 return "operation failed";
1648 case QETH_IPA_ARP_RC_NOTSUPP:
1649 *rc = -EOPNOTSUPP;
1650 return "operation not supported";
1651 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1652 *rc = -EINVAL;
1653 return "argument out of range";
1654 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1655 *rc = -EOPNOTSUPP;
1656 return "query operation not supported";
1657 case QETH_IPA_ARP_RC_Q_NO_DATA:
1658 *rc = -ENOENT;
1659 return "no query data available";
1660 default:
1661 return "unknown error";
1662 }
1663}
1664
1665static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1666{
1667 int tmp;
1668 int rc;
1669
1670 QETH_CARD_TEXT(card, 3, "arpstnoe");
1671
1672 /*
1673 * currently GuestLAN only supports the ARP assist function
1674 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1675 * thus we say EOPNOTSUPP for this ARP function
1676 */
1677 if (card->info.guestlan)
1678 return -EOPNOTSUPP;
1679 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1680 return -EOPNOTSUPP;
1681 }
1682 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1683 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1684 no_entries);
1685 if (rc) {
1686 tmp = rc;
1687 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
1688 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
1689 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1690 }
1691 return rc;
1692}
1693
1694static __u32 get_arp_entry_size(struct qeth_card *card,
1695 struct qeth_arp_query_data *qdata,
1696 struct qeth_arp_entrytype *type, __u8 strip_entries)
1697{
1698 __u32 rc;
1699 __u8 is_hsi;
1700
1701 is_hsi = qdata->reply_bits == 5;
1702 if (type->ip == QETHARP_IP_ADDR_V4) {
1703 QETH_CARD_TEXT(card, 4, "arpev4");
1704 if (strip_entries) {
1705 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1706 sizeof(struct qeth_arp_qi_entry7_short);
1707 } else {
1708 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1709 sizeof(struct qeth_arp_qi_entry7);
1710 }
1711 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1712 QETH_CARD_TEXT(card, 4, "arpev6");
1713 if (strip_entries) {
1714 rc = is_hsi ?
1715 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1716 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1717 } else {
1718 rc = is_hsi ?
1719 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1720 sizeof(struct qeth_arp_qi_entry7_ipv6);
1721 }
1722 } else {
1723 QETH_CARD_TEXT(card, 4, "arpinv");
1724 rc = 0;
1725 }
1726
1727 return rc;
1728}
1729
1730static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1731{
1732 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1733 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1734}
1735
1736static int qeth_l3_arp_query_cb(struct qeth_card *card,
1737 struct qeth_reply *reply, unsigned long data)
1738{
1739 struct qeth_ipa_cmd *cmd;
1740 struct qeth_arp_query_data *qdata;
1741 struct qeth_arp_query_info *qinfo;
1742 int i;
1743 int e;
1744 int entrybytes_done;
1745 int stripped_bytes;
1746 __u8 do_strip_entries;
1747
1748 QETH_CARD_TEXT(card, 3, "arpquecb");
1749
1750 qinfo = (struct qeth_arp_query_info *) reply->param;
1751 cmd = (struct qeth_ipa_cmd *) data;
1752 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1753 if (cmd->hdr.return_code) {
1754 QETH_CARD_TEXT(card, 4, "arpcberr");
1755 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1756 return 0;
1757 }
1758 if (cmd->data.setassparms.hdr.return_code) {
1759 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1760 QETH_CARD_TEXT(card, 4, "setaperr");
1761 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1762 return 0;
1763 }
1764 qdata = &cmd->data.setassparms.data.query_arp;
1765 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1766
1767 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1768 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1769 entrybytes_done = 0;
1770 for (e = 0; e < qdata->no_entries; ++e) {
1771 char *cur_entry;
1772 __u32 esize;
1773 struct qeth_arp_entrytype *etype;
1774
1775 cur_entry = &qdata->data + entrybytes_done;
1776 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1777 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1778 QETH_CARD_TEXT(card, 4, "pmis");
1779 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1780 break;
1781 }
1782 esize = get_arp_entry_size(card, qdata, etype,
1783 do_strip_entries);
1784 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1785 if (!esize)
1786 break;
1787
1788 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1789 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
1790 cmd->hdr.return_code = IPA_RC_ENOMEM;
1791 goto out_error;
1792 }
1793
1794 memcpy(qinfo->udata + qinfo->udata_offset,
1795 &qdata->data + entrybytes_done + stripped_bytes,
1796 esize);
1797 entrybytes_done += esize + stripped_bytes;
1798 qinfo->udata_offset += esize;
1799 ++qinfo->no_entries;
1800 }
1801 /* check if all replies received ... */
1802 if (cmd->data.setassparms.hdr.seq_no <
1803 cmd->data.setassparms.hdr.number_of_replies)
1804 return 1;
1805 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1806 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1807 /* keep STRIP_ENTRIES flag so the user program can distinguish
1808 * stripped entries from normal ones */
1809 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1810 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1811 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1812 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1813 return 0;
1814out_error:
1815 i = 0;
1816 memcpy(qinfo->udata, &i, 4);
1817 return 0;
1818}
1819
1820static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
1821 struct qeth_cmd_buffer *iob, int len,
1822 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1823 unsigned long),
1824 void *reply_param)
1825{
1826 QETH_CARD_TEXT(card, 4, "sendarp");
1827
1828 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
1829 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
1830 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
1831 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
1832 reply_cb, reply_param);
1833}
1834
1835static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1836 enum qeth_prot_versions prot,
1837 struct qeth_arp_query_info *qinfo)
1838{
1839 struct qeth_cmd_buffer *iob;
1840 struct qeth_ipa_cmd *cmd;
1841 int tmp;
1842 int rc;
1843
1844 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1845
1846 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1847 IPA_CMD_ASS_ARP_QUERY_INFO,
1848 sizeof(struct qeth_arp_query_data)
1849 - sizeof(char),
1850 prot);
1851 if (!iob)
1852 return -ENOMEM;
1853 cmd = __ipa_cmd(iob);
1854 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1855 cmd->data.setassparms.data.query_arp.reply_bits = 0;
1856 cmd->data.setassparms.data.query_arp.no_entries = 0;
1857 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
1858 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
1859 qeth_l3_arp_query_cb, (void *)qinfo);
1860 if (rc) {
1861 tmp = rc;
1862 QETH_DBF_MESSAGE(2,
1863 "Error while querying ARP cache on %s: %s "
1864 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1865 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1866 }
1867
1868 return rc;
1869}
1870
1871static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1872{
1873 struct qeth_arp_query_info qinfo = {0, };
1874 int rc;
1875
1876 QETH_CARD_TEXT(card, 3, "arpquery");
1877
1878 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1879 IPA_ARP_PROCESSING)) {
1880 QETH_CARD_TEXT(card, 3, "arpqnsup");
1881 rc = -EOPNOTSUPP;
1882 goto out;
1883 }
1884 /* get size of userspace buffer and mask_bits -> 6 bytes */
1885 if (copy_from_user(&qinfo, udata, 6)) {
1886 rc = -EFAULT;
1887 goto out;
1888 }
1889 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1890 if (!qinfo.udata) {
1891 rc = -ENOMEM;
1892 goto out;
1893 }
1894 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1895 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1896 if (rc) {
1897 if (copy_to_user(udata, qinfo.udata, 4))
1898 rc = -EFAULT;
1899 goto free_and_out;
1900 }
1901 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1902 /* fails in case of GuestLAN QDIO mode */
1903 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1904 }
1905 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1906 QETH_CARD_TEXT(card, 4, "qactf");
1907 rc = -EFAULT;
1908 goto free_and_out;
1909 }
1910 QETH_CARD_TEXT(card, 4, "qacts");
1911
1912free_and_out:
1913 kfree(qinfo.udata);
1914out:
1915 return rc;
1916}
1917
1918static int qeth_l3_arp_add_entry(struct qeth_card *card,
1919 struct qeth_arp_cache_entry *entry)
1920{
1921 struct qeth_cmd_buffer *iob;
1922 char buf[16];
1923 int tmp;
1924 int rc;
1925
1926 QETH_CARD_TEXT(card, 3, "arpadent");
1927
1928 /*
1929 * currently GuestLAN only supports the ARP assist function
1930 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1931 * thus we say EOPNOTSUPP for this ARP function
1932 */
1933 if (card->info.guestlan)
1934 return -EOPNOTSUPP;
1935 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1936 return -EOPNOTSUPP;
1937 }
1938
1939 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1940 IPA_CMD_ASS_ARP_ADD_ENTRY,
1941 sizeof(struct qeth_arp_cache_entry),
1942 QETH_PROT_IPV4);
1943 if (!iob)
1944 return -ENOMEM;
1945 rc = qeth_send_setassparms(card, iob,
1946 sizeof(struct qeth_arp_cache_entry),
1947 (unsigned long) entry,
1948 qeth_setassparms_cb, NULL);
1949 if (rc) {
1950 tmp = rc;
1951 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1952 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
1953 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1954 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1955 }
1956 return rc;
1957}
1958
1959static int qeth_l3_arp_remove_entry(struct qeth_card *card,
1960 struct qeth_arp_cache_entry *entry)
1961{
1962 struct qeth_cmd_buffer *iob;
1963 char buf[16] = {0, };
1964 int tmp;
1965 int rc;
1966
1967 QETH_CARD_TEXT(card, 3, "arprment");
1968
1969 /*
1970 * currently GuestLAN only supports the ARP assist function
1971 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1972 * thus we say EOPNOTSUPP for this ARP function
1973 */
1974 if (card->info.guestlan)
1975 return -EOPNOTSUPP;
1976 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1977 return -EOPNOTSUPP;
1978 }
1979 memcpy(buf, entry, 12);
1980 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1981 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
1982 12,
1983 QETH_PROT_IPV4);
1984 if (!iob)
1985 return -ENOMEM;
1986 rc = qeth_send_setassparms(card, iob,
1987 12, (unsigned long)buf,
1988 qeth_setassparms_cb, NULL);
1989 if (rc) {
1990 tmp = rc;
1991 memset(buf, 0, 16);
1992 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1993 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
1994 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1995 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1996 }
1997 return rc;
1998}
1999
2000static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2001{
2002 int rc;
2003 int tmp;
2004
2005 QETH_CARD_TEXT(card, 3, "arpflush");
2006
2007 /*
2008 * currently GuestLAN only supports the ARP assist function
2009 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2010 * thus we say EOPNOTSUPP for this ARP function
2011 */
2012 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2013 return -EOPNOTSUPP;
2014 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2015 return -EOPNOTSUPP;
2016 }
2017 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2018 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2019 if (rc) {
2020 tmp = rc;
2021 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2022 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2023 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2024 }
2025 return rc;
2026}
2027
2028static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2029{
2030 struct qeth_card *card = dev->ml_priv;
2031 struct qeth_arp_cache_entry arp_entry;
2032 int rc = 0;
2033
2034 switch (cmd) {
2035 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2036 if (!capable(CAP_NET_ADMIN)) {
2037 rc = -EPERM;
2038 break;
2039 }
2040 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2041 break;
2042 case SIOC_QETH_ARP_QUERY_INFO:
2043 if (!capable(CAP_NET_ADMIN)) {
2044 rc = -EPERM;
2045 break;
2046 }
2047 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2048 break;
2049 case SIOC_QETH_ARP_ADD_ENTRY:
2050 if (!capable(CAP_NET_ADMIN)) {
2051 rc = -EPERM;
2052 break;
2053 }
2054 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2055 sizeof(struct qeth_arp_cache_entry)))
2056 rc = -EFAULT;
2057 else
2058 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2059 break;
2060 case SIOC_QETH_ARP_REMOVE_ENTRY:
2061 if (!capable(CAP_NET_ADMIN)) {
2062 rc = -EPERM;
2063 break;
2064 }
2065 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2066 sizeof(struct qeth_arp_cache_entry)))
2067 rc = -EFAULT;
2068 else
2069 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2070 break;
2071 case SIOC_QETH_ARP_FLUSH_CACHE:
2072 if (!capable(CAP_NET_ADMIN)) {
2073 rc = -EPERM;
2074 break;
2075 }
2076 rc = qeth_l3_arp_flush_cache(card);
2077 break;
2078 default:
2079 rc = -EOPNOTSUPP;
2080 }
2081 return rc;
2082}
2083
2084static int qeth_l3_get_cast_type(struct sk_buff *skb)
2085{
2086 struct neighbour *n = NULL;
2087 struct dst_entry *dst;
2088
2089 rcu_read_lock();
2090 dst = skb_dst(skb);
2091 if (dst)
2092 n = dst_neigh_lookup_skb(dst, skb);
2093 if (n) {
2094 int cast_type = n->type;
2095
2096 rcu_read_unlock();
2097 neigh_release(n);
2098 if ((cast_type == RTN_BROADCAST) ||
2099 (cast_type == RTN_MULTICAST) ||
2100 (cast_type == RTN_ANYCAST))
2101 return cast_type;
2102 return RTN_UNSPEC;
2103 }
2104 rcu_read_unlock();
2105
2106 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
2107 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
2108 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
2109 RTN_MULTICAST : RTN_UNSPEC;
2110 else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
2111 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
2112 RTN_MULTICAST : RTN_UNSPEC;
2113
2114 /* ... and MAC address */
2115 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, skb->dev->broadcast))
2116 return RTN_BROADCAST;
2117 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
2118 return RTN_MULTICAST;
2119
2120 /* default to unicast */
2121 return RTN_UNSPEC;
2122}
2123
2124static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2125 struct qeth_hdr *hdr, struct sk_buff *skb)
2126{
2127 char daddr[16];
2128 struct af_iucv_trans_hdr *iucv_hdr;
2129
2130 memset(hdr, 0, sizeof(struct qeth_hdr));
2131 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2132 hdr->hdr.l3.ext_flags = 0;
2133 hdr->hdr.l3.length = skb->len - ETH_HLEN;
2134 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2135
2136 iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2137 memset(daddr, 0, sizeof(daddr));
2138 daddr[0] = 0xfe;
2139 daddr[1] = 0x80;
2140 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2141 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16);
2142}
2143
2144static u8 qeth_l3_cast_type_to_flag(int cast_type)
2145{
2146 if (cast_type == RTN_MULTICAST)
2147 return QETH_CAST_MULTICAST;
2148 if (cast_type == RTN_ANYCAST)
2149 return QETH_CAST_ANYCAST;
2150 if (cast_type == RTN_BROADCAST)
2151 return QETH_CAST_BROADCAST;
2152 return QETH_CAST_UNICAST;
2153}
2154
2155static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2156 struct sk_buff *skb, int ipv, int cast_type,
2157 unsigned int data_len)
2158{
2159 memset(hdr, 0, sizeof(struct qeth_hdr));
2160 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2161 hdr->hdr.l3.length = data_len;
2162
2163 /*
2164 * before we're going to overwrite this location with next hop ip.
2165 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2166 */
2167 if (skb_vlan_tag_present(skb)) {
2168 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2169 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2170 else
2171 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2172 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2173 }
2174
2175 /* OSA only: */
2176 if (!ipv) {
2177 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
2178 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
2179 skb->dev->broadcast))
2180 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
2181 else
2182 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
2183 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
2184 return;
2185 }
2186
2187 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
2188 rcu_read_lock();
2189 if (ipv == 4) {
2190 struct rtable *rt = skb_rtable(skb);
2191
2192 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2193 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2194 ip_hdr(skb)->daddr;
2195 } else {
2196 /* IPv6 */
2197 const struct rt6_info *rt = skb_rt6_info(skb);
2198 const struct in6_addr *next_hop;
2199
2200 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2201 next_hop = &rt->rt6i_gateway;
2202 else
2203 next_hop = &ipv6_hdr(skb)->daddr;
2204 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16);
2205
2206 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2207 if (card->info.type != QETH_CARD_TYPE_IQD)
2208 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2209 }
2210 rcu_read_unlock();
2211}
2212
2213static void qeth_l3_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr,
2214 struct sk_buff *skb)
2215{
2216 struct iphdr *iph = ip_hdr(skb);
2217
2218 /* tcph->check contains already the pseudo hdr checksum
2219 * so just set the header flags
2220 */
2221 if (iph->protocol == IPPROTO_UDP)
2222 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2223 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2224 QETH_HDR_EXT_CSUM_HDR_REQ;
2225 iph->check = 0;
2226 if (card->options.performance_stats)
2227 card->perf_stats.tx_csum++;
2228}
2229
2230static void qeth_tso_fill_header(struct qeth_card *card,
2231 struct qeth_hdr *qhdr, struct sk_buff *skb)
2232{
2233 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2234 struct tcphdr *tcph = tcp_hdr(skb);
2235 struct iphdr *iph = ip_hdr(skb);
2236 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2237
2238 /*fix header to TSO values ...*/
2239 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2240 /*set values which are fix for the first approach ...*/
2241 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2242 hdr->ext.imb_hdr_no = 1;
2243 hdr->ext.hdr_type = 1;
2244 hdr->ext.hdr_version = 1;
2245 hdr->ext.hdr_len = 28;
2246 /*insert non-fix values */
2247 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2248 hdr->ext.dg_hdr_len = (__u16)(ip_hdrlen(skb) + tcp_hdrlen(skb));
2249 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2250 sizeof(struct qeth_hdr_tso));
2251 tcph->check = 0;
2252 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2253 ip6h->payload_len = 0;
2254 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2255 0, IPPROTO_TCP, 0);
2256 } else {
2257 /*OSA want us to set these values ...*/
2258 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2259 0, IPPROTO_TCP, 0);
2260 iph->tot_len = 0;
2261 iph->check = 0;
2262 }
2263}
2264
2265/**
2266 * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2267 * @card: qeth card structure, to check max. elems.
2268 * @skb: SKB address
2269 * @extra_elems: extra elems needed, to check against max.
2270 *
2271 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2272 * skb data, including linear part and fragments, but excluding TCP header.
2273 * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2274 * Checks if the result plus extra_elems fits under the limit for the card.
2275 * Returns 0 if it does not.
2276 * Note: extra_elems is not included in the returned result.
2277 */
2278static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2279 struct sk_buff *skb, int extra_elems)
2280{
2281 addr_t start = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2282 addr_t end = (addr_t)skb->data + skb_headlen(skb);
2283 int elements = qeth_get_elements_for_frags(skb);
2284
2285 if (start != end)
2286 elements += qeth_get_elements_for_range(start, end);
2287
2288 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2289 QETH_DBF_MESSAGE(2,
2290 "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2291 elements + extra_elems, skb->len);
2292 return 0;
2293 }
2294 return elements;
2295}
2296
2297static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2298 struct net_device *dev)
2299{
2300 int rc;
2301 __be16 *tag;
2302 struct qeth_hdr *hdr = NULL;
2303 int hdr_elements = 0;
2304 int elements;
2305 struct qeth_card *card = dev->ml_priv;
2306 struct sk_buff *new_skb = NULL;
2307 int ipv = qeth_get_ip_version(skb);
2308 int cast_type = qeth_l3_get_cast_type(skb);
2309 struct qeth_qdio_out_q *queue =
2310 card->qdio.out_qs[card->qdio.do_prio_queueing
2311 || (cast_type && card->info.is_multicast_different) ?
2312 qeth_get_priority_queue(card, skb, ipv, cast_type) :
2313 card->qdio.default_out_queue];
2314 int tx_bytes = skb->len;
2315 unsigned int hd_len = 0;
2316 bool use_tso;
2317 int data_offset = -1;
2318 unsigned int nr_frags;
2319
2320 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2321 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2322 ((card->options.cq == QETH_CQ_ENABLED) &&
2323 (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) ||
2324 card->options.sniffer)
2325 goto tx_drop;
2326
2327 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2328 card->stats.tx_carrier_errors++;
2329 goto tx_drop;
2330 }
2331
2332 if ((cast_type == RTN_BROADCAST) &&
2333 (card->info.broadcast_capable == 0))
2334 goto tx_drop;
2335
2336 if (card->options.performance_stats) {
2337 card->perf_stats.outbound_cnt++;
2338 card->perf_stats.outbound_start_time = qeth_get_micros();
2339 }
2340
2341 /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2342 use_tso = skb_is_gso(skb) &&
2343 (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4);
2344
2345 if (card->info.type == QETH_CARD_TYPE_IQD) {
2346 new_skb = skb;
2347 data_offset = ETH_HLEN;
2348 hd_len = sizeof(*hdr);
2349 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2350 if (!hdr)
2351 goto tx_drop;
2352 hdr_elements++;
2353 } else {
2354 /* create a clone with writeable headroom */
2355 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2356 + VLAN_HLEN);
2357 if (!new_skb)
2358 goto tx_drop;
2359
2360 if (ipv == 4) {
2361 skb_pull(new_skb, ETH_HLEN);
2362 }
2363
2364 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2365 skb_push(new_skb, VLAN_HLEN);
2366 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2367 skb_copy_to_linear_data_offset(new_skb, 4,
2368 new_skb->data + 8, 4);
2369 skb_copy_to_linear_data_offset(new_skb, 8,
2370 new_skb->data + 12, 4);
2371 tag = (__be16 *)(new_skb->data + 12);
2372 *tag = cpu_to_be16(ETH_P_8021Q);
2373 *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2374 }
2375 }
2376
2377 netif_stop_queue(dev);
2378
2379 /* fix hardware limitation: as long as we do not have sbal
2380 * chaining we can not send long frag lists
2381 */
2382 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2383 ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2384 (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2385 int lin_rc = skb_linearize(new_skb);
2386
2387 if (card->options.performance_stats) {
2388 if (lin_rc)
2389 card->perf_stats.tx_linfail++;
2390 else
2391 card->perf_stats.tx_lin++;
2392 }
2393 if (lin_rc)
2394 goto tx_drop;
2395 }
2396 nr_frags = skb_shinfo(new_skb)->nr_frags;
2397
2398 if (use_tso) {
2399 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2400 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2401 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type,
2402 new_skb->len - sizeof(struct qeth_hdr_tso));
2403 qeth_tso_fill_header(card, hdr, new_skb);
2404 hdr_elements++;
2405 } else {
2406 if (data_offset < 0) {
2407 hdr = skb_push(new_skb, sizeof(struct qeth_hdr));
2408 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type,
2409 new_skb->len -
2410 sizeof(struct qeth_hdr));
2411 } else {
2412 if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV)
2413 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2414 else {
2415 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2416 cast_type,
2417 new_skb->len - data_offset);
2418 }
2419 }
2420
2421 if (skb->ip_summed == CHECKSUM_PARTIAL)
2422 qeth_l3_hdr_csum(card, hdr, new_skb);
2423 }
2424
2425 elements = use_tso ?
2426 qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2427 qeth_get_elements_no(card, new_skb, hdr_elements,
2428 (data_offset > 0) ? data_offset : 0);
2429 if (!elements) {
2430 if (data_offset >= 0)
2431 kmem_cache_free(qeth_core_header_cache, hdr);
2432 goto tx_drop;
2433 }
2434 elements += hdr_elements;
2435
2436 if (card->info.type != QETH_CARD_TYPE_IQD) {
2437 int len;
2438 if (use_tso) {
2439 hd_len = sizeof(struct qeth_hdr_tso) +
2440 ip_hdrlen(new_skb) + tcp_hdrlen(new_skb);
2441 len = hd_len;
2442 } else {
2443 len = sizeof(struct qeth_hdr_layer3);
2444 }
2445
2446 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2447 goto tx_drop;
2448 rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len,
2449 hd_len, elements);
2450 } else
2451 rc = qeth_do_send_packet_fast(queue, new_skb, hdr, data_offset,
2452 hd_len);
2453
2454 if (!rc) {
2455 card->stats.tx_packets++;
2456 card->stats.tx_bytes += tx_bytes;
2457 if (new_skb != skb)
2458 dev_kfree_skb_any(skb);
2459 if (card->options.performance_stats) {
2460 if (use_tso) {
2461 card->perf_stats.large_send_bytes += tx_bytes;
2462 card->perf_stats.large_send_cnt++;
2463 }
2464 if (nr_frags) {
2465 card->perf_stats.sg_skbs_sent++;
2466 /* nr_frags + skb->data */
2467 card->perf_stats.sg_frags_sent += nr_frags + 1;
2468 }
2469 }
2470 rc = NETDEV_TX_OK;
2471 } else {
2472 if (data_offset >= 0)
2473 kmem_cache_free(qeth_core_header_cache, hdr);
2474
2475 if (rc == -EBUSY) {
2476 if (new_skb != skb)
2477 dev_kfree_skb_any(new_skb);
2478 return NETDEV_TX_BUSY;
2479 } else
2480 goto tx_drop;
2481 }
2482
2483 netif_wake_queue(dev);
2484 if (card->options.performance_stats)
2485 card->perf_stats.outbound_time += qeth_get_micros() -
2486 card->perf_stats.outbound_start_time;
2487 return rc;
2488
2489tx_drop:
2490 card->stats.tx_dropped++;
2491 card->stats.tx_errors++;
2492 if ((new_skb != skb) && new_skb)
2493 dev_kfree_skb_any(new_skb);
2494 dev_kfree_skb_any(skb);
2495 netif_wake_queue(dev);
2496 return NETDEV_TX_OK;
2497}
2498
2499static int __qeth_l3_open(struct net_device *dev)
2500{
2501 struct qeth_card *card = dev->ml_priv;
2502 int rc = 0;
2503
2504 QETH_CARD_TEXT(card, 4, "qethopen");
2505 if (card->state == CARD_STATE_UP)
2506 return rc;
2507 if (card->state != CARD_STATE_SOFTSETUP)
2508 return -ENODEV;
2509 card->data.state = CH_STATE_UP;
2510 card->state = CARD_STATE_UP;
2511 netif_start_queue(dev);
2512
2513 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2514 napi_enable(&card->napi);
2515 napi_schedule(&card->napi);
2516 } else
2517 rc = -EIO;
2518 return rc;
2519}
2520
2521static int qeth_l3_open(struct net_device *dev)
2522{
2523 struct qeth_card *card = dev->ml_priv;
2524
2525 QETH_CARD_TEXT(card, 5, "qethope_");
2526 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2527 QETH_CARD_TEXT(card, 3, "openREC");
2528 return -ERESTARTSYS;
2529 }
2530 return __qeth_l3_open(dev);
2531}
2532
2533static int qeth_l3_stop(struct net_device *dev)
2534{
2535 struct qeth_card *card = dev->ml_priv;
2536
2537 QETH_CARD_TEXT(card, 4, "qethstop");
2538 netif_tx_disable(dev);
2539 if (card->state == CARD_STATE_UP) {
2540 card->state = CARD_STATE_SOFTSETUP;
2541 napi_disable(&card->napi);
2542 }
2543 return 0;
2544}
2545
2546static const struct ethtool_ops qeth_l3_ethtool_ops = {
2547 .get_link = ethtool_op_get_link,
2548 .get_strings = qeth_core_get_strings,
2549 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2550 .get_sset_count = qeth_core_get_sset_count,
2551 .get_drvinfo = qeth_core_get_drvinfo,
2552 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2553};
2554
2555/*
2556 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2557 * NOARP on the netdevice is no option because it also turns off neighbor
2558 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2559 * arp resolution but we want the hard header (packet socket will work
2560 * e.g. tcpdump)
2561 */
2562static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2563{
2564 n->nud_state = NUD_NOARP;
2565 memcpy(n->ha, "FAKELL", 6);
2566 n->output = n->ops->connected_output;
2567 return 0;
2568}
2569
2570static int
2571qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2572{
2573 if (np->tbl->family == AF_INET)
2574 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2575
2576 return 0;
2577}
2578
2579static const struct net_device_ops qeth_l3_netdev_ops = {
2580 .ndo_open = qeth_l3_open,
2581 .ndo_stop = qeth_l3_stop,
2582 .ndo_get_stats = qeth_get_stats,
2583 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2584 .ndo_validate_addr = eth_validate_addr,
2585 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2586 .ndo_do_ioctl = qeth_do_ioctl,
2587 .ndo_change_mtu = qeth_change_mtu,
2588 .ndo_fix_features = qeth_fix_features,
2589 .ndo_set_features = qeth_set_features,
2590 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2591 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2592 .ndo_tx_timeout = qeth_tx_timeout,
2593};
2594
2595static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2596 .ndo_open = qeth_l3_open,
2597 .ndo_stop = qeth_l3_stop,
2598 .ndo_get_stats = qeth_get_stats,
2599 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2600 .ndo_features_check = qeth_features_check,
2601 .ndo_validate_addr = eth_validate_addr,
2602 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2603 .ndo_do_ioctl = qeth_do_ioctl,
2604 .ndo_change_mtu = qeth_change_mtu,
2605 .ndo_fix_features = qeth_fix_features,
2606 .ndo_set_features = qeth_set_features,
2607 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2608 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2609 .ndo_tx_timeout = qeth_tx_timeout,
2610 .ndo_neigh_setup = qeth_l3_neigh_setup,
2611};
2612
2613static int qeth_l3_setup_netdev(struct qeth_card *card)
2614{
2615 int rc;
2616
2617 if (card->info.type == QETH_CARD_TYPE_OSD ||
2618 card->info.type == QETH_CARD_TYPE_OSX) {
2619 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2620 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2621 pr_info("qeth_l3: ignoring TR device\n");
2622 return -ENODEV;
2623 } else {
2624 card->dev = alloc_etherdev(0);
2625 if (!card->dev)
2626 return -ENODEV;
2627 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2628
2629 /*IPv6 address autoconfiguration stuff*/
2630 qeth_l3_get_unique_id(card);
2631 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2632 card->dev->dev_id = card->info.unique_id &
2633 0xffff;
2634
2635 card->dev->hw_features |= NETIF_F_SG;
2636 card->dev->vlan_features |= NETIF_F_SG;
2637
2638 if (!card->info.guestlan) {
2639 card->dev->features |= NETIF_F_SG;
2640 card->dev->hw_features |= NETIF_F_TSO |
2641 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2642 card->dev->vlan_features |= NETIF_F_TSO |
2643 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2644 }
2645 }
2646 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2647 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
2648 ether_setup);
2649 if (!card->dev)
2650 return -ENODEV;
2651 card->dev->flags |= IFF_NOARP;
2652 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2653 rc = qeth_l3_iqd_read_initial_mac(card);
2654 if (rc)
2655 return rc;
2656 if (card->options.hsuid[0])
2657 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2658 } else
2659 return -ENODEV;
2660
2661 card->dev->ml_priv = card;
2662 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2663 card->dev->mtu = card->info.initial_mtu;
2664 card->dev->min_mtu = 64;
2665 card->dev->max_mtu = ETH_MAX_MTU;
2666 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2667 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2668 NETIF_F_HW_VLAN_CTAG_RX |
2669 NETIF_F_HW_VLAN_CTAG_FILTER;
2670 netif_keep_dst(card->dev);
2671 netif_set_gso_max_size(card->dev, (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
2672 PAGE_SIZE);
2673
2674 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2675 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2676 netif_carrier_off(card->dev);
2677 return register_netdev(card->dev);
2678}
2679
2680static const struct device_type qeth_l3_devtype = {
2681 .name = "qeth_layer3",
2682 .groups = qeth_l3_attr_groups,
2683};
2684
2685static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2686{
2687 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2688 int rc;
2689
2690 if (gdev->dev.type == &qeth_generic_devtype) {
2691 rc = qeth_l3_create_device_attributes(&gdev->dev);
2692 if (rc)
2693 return rc;
2694 }
2695 hash_init(card->ip_htable);
2696 hash_init(card->ip_mc_htable);
2697 card->options.layer2 = 0;
2698 card->info.hwtrap = 0;
2699 return 0;
2700}
2701
2702static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2703{
2704 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2705
2706 if (cgdev->dev.type == &qeth_generic_devtype)
2707 qeth_l3_remove_device_attributes(&cgdev->dev);
2708
2709 qeth_set_allowed_threads(card, 0, 1);
2710 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2711
2712 if (cgdev->state == CCWGROUP_ONLINE)
2713 qeth_l3_set_offline(cgdev);
2714
2715 if (card->dev) {
2716 unregister_netdev(card->dev);
2717 free_netdev(card->dev);
2718 card->dev = NULL;
2719 }
2720
2721 qeth_l3_clear_ip_htable(card, 0);
2722 qeth_l3_clear_ipato_list(card);
2723 return;
2724}
2725
2726static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2727{
2728 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2729 int rc = 0;
2730 enum qeth_card_states recover_flag;
2731
2732 mutex_lock(&card->discipline_mutex);
2733 mutex_lock(&card->conf_mutex);
2734 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2735 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2736
2737 recover_flag = card->state;
2738 rc = qeth_core_hardsetup_card(card);
2739 if (rc) {
2740 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2741 rc = -ENODEV;
2742 goto out_remove;
2743 }
2744
2745 if (!card->dev && qeth_l3_setup_netdev(card)) {
2746 rc = -ENODEV;
2747 goto out_remove;
2748 }
2749
2750 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2751 if (card->info.hwtrap &&
2752 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2753 card->info.hwtrap = 0;
2754 } else
2755 card->info.hwtrap = 0;
2756
2757 card->state = CARD_STATE_HARDSETUP;
2758 qeth_print_status_message(card);
2759
2760 /* softsetup */
2761 QETH_DBF_TEXT(SETUP, 2, "softsetp");
2762
2763 rc = qeth_l3_setadapter_parms(card);
2764 if (rc)
2765 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2766 if (!card->options.sniffer) {
2767 rc = qeth_l3_start_ipassists(card);
2768 if (rc) {
2769 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2770 goto out_remove;
2771 }
2772 rc = qeth_l3_setrouting_v4(card);
2773 if (rc)
2774 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2775 rc = qeth_l3_setrouting_v6(card);
2776 if (rc)
2777 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2778 }
2779 netif_tx_disable(card->dev);
2780
2781 rc = qeth_init_qdio_queues(card);
2782 if (rc) {
2783 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2784 rc = -ENODEV;
2785 goto out_remove;
2786 }
2787 card->state = CARD_STATE_SOFTSETUP;
2788
2789 qeth_set_allowed_threads(card, 0xffffffff, 0);
2790 qeth_l3_recover_ip(card);
2791 if (card->lan_online)
2792 netif_carrier_on(card->dev);
2793 else
2794 netif_carrier_off(card->dev);
2795 if (recover_flag == CARD_STATE_RECOVER) {
2796 rtnl_lock();
2797 if (recovery_mode)
2798 __qeth_l3_open(card->dev);
2799 else
2800 dev_open(card->dev);
2801 qeth_l3_set_rx_mode(card->dev);
2802 qeth_recover_features(card->dev);
2803 rtnl_unlock();
2804 }
2805 qeth_trace_features(card);
2806 /* let user_space know that device is online */
2807 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2808 mutex_unlock(&card->conf_mutex);
2809 mutex_unlock(&card->discipline_mutex);
2810 return 0;
2811out_remove:
2812 qeth_l3_stop_card(card, 0);
2813 ccw_device_set_offline(CARD_DDEV(card));
2814 ccw_device_set_offline(CARD_WDEV(card));
2815 ccw_device_set_offline(CARD_RDEV(card));
2816 qdio_free(CARD_DDEV(card));
2817 if (recover_flag == CARD_STATE_RECOVER)
2818 card->state = CARD_STATE_RECOVER;
2819 else
2820 card->state = CARD_STATE_DOWN;
2821 mutex_unlock(&card->conf_mutex);
2822 mutex_unlock(&card->discipline_mutex);
2823 return rc;
2824}
2825
2826static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2827{
2828 return __qeth_l3_set_online(gdev, 0);
2829}
2830
2831static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2832 int recovery_mode)
2833{
2834 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2835 int rc = 0, rc2 = 0, rc3 = 0;
2836 enum qeth_card_states recover_flag;
2837
2838 mutex_lock(&card->discipline_mutex);
2839 mutex_lock(&card->conf_mutex);
2840 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2841 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2842
2843 if (card->dev && netif_carrier_ok(card->dev))
2844 netif_carrier_off(card->dev);
2845 recover_flag = card->state;
2846 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2847 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2848 card->info.hwtrap = 1;
2849 }
2850 qeth_l3_stop_card(card, recovery_mode);
2851 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
2852 rtnl_lock();
2853 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2854 rtnl_unlock();
2855 }
2856 rc = ccw_device_set_offline(CARD_DDEV(card));
2857 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2858 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2859 if (!rc)
2860 rc = (rc2) ? rc2 : rc3;
2861 if (rc)
2862 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2863 qdio_free(CARD_DDEV(card));
2864 if (recover_flag == CARD_STATE_UP)
2865 card->state = CARD_STATE_RECOVER;
2866 /* let user_space know that device is offline */
2867 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2868 mutex_unlock(&card->conf_mutex);
2869 mutex_unlock(&card->discipline_mutex);
2870 return 0;
2871}
2872
2873static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2874{
2875 return __qeth_l3_set_offline(cgdev, 0);
2876}
2877
2878static int qeth_l3_recover(void *ptr)
2879{
2880 struct qeth_card *card;
2881 int rc = 0;
2882
2883 card = (struct qeth_card *) ptr;
2884 QETH_CARD_TEXT(card, 2, "recover1");
2885 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2886 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2887 return 0;
2888 QETH_CARD_TEXT(card, 2, "recover2");
2889 dev_warn(&card->gdev->dev,
2890 "A recovery process has been started for the device\n");
2891 qeth_set_recovery_task(card);
2892 __qeth_l3_set_offline(card->gdev, 1);
2893 rc = __qeth_l3_set_online(card->gdev, 1);
2894 if (!rc)
2895 dev_info(&card->gdev->dev,
2896 "Device successfully recovered!\n");
2897 else {
2898 qeth_close_dev(card);
2899 dev_warn(&card->gdev->dev, "The qeth device driver "
2900 "failed to recover an error on the device\n");
2901 }
2902 qeth_clear_recovery_task(card);
2903 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2904 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2905 return 0;
2906}
2907
2908static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2909{
2910 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2911
2912 if (card->dev)
2913 netif_device_detach(card->dev);
2914 qeth_set_allowed_threads(card, 0, 1);
2915 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2916 if (gdev->state == CCWGROUP_OFFLINE)
2917 return 0;
2918 if (card->state == CARD_STATE_UP) {
2919 if (card->info.hwtrap)
2920 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2921 __qeth_l3_set_offline(card->gdev, 1);
2922 } else
2923 __qeth_l3_set_offline(card->gdev, 0);
2924 return 0;
2925}
2926
2927static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2928{
2929 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2930 int rc = 0;
2931
2932 if (gdev->state == CCWGROUP_OFFLINE)
2933 goto out;
2934
2935 if (card->state == CARD_STATE_RECOVER) {
2936 rc = __qeth_l3_set_online(card->gdev, 1);
2937 if (rc) {
2938 rtnl_lock();
2939 dev_close(card->dev);
2940 rtnl_unlock();
2941 }
2942 } else
2943 rc = __qeth_l3_set_online(card->gdev, 0);
2944out:
2945 qeth_set_allowed_threads(card, 0xffffffff, 0);
2946 if (card->dev)
2947 netif_device_attach(card->dev);
2948 if (rc)
2949 dev_warn(&card->gdev->dev, "The qeth device driver "
2950 "failed to recover an error on the device\n");
2951 return rc;
2952}
2953
2954/* Returns zero if the command is successfully "consumed" */
2955static int qeth_l3_control_event(struct qeth_card *card,
2956 struct qeth_ipa_cmd *cmd)
2957{
2958 return 1;
2959}
2960
2961struct qeth_discipline qeth_l3_discipline = {
2962 .devtype = &qeth_l3_devtype,
2963 .start_poll = qeth_qdio_start_poll,
2964 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
2965 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
2966 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2967 .recover = qeth_l3_recover,
2968 .setup = qeth_l3_probe_device,
2969 .remove = qeth_l3_remove_device,
2970 .set_online = qeth_l3_set_online,
2971 .set_offline = qeth_l3_set_offline,
2972 .freeze = qeth_l3_pm_suspend,
2973 .thaw = qeth_l3_pm_resume,
2974 .restore = qeth_l3_pm_resume,
2975 .do_ioctl = qeth_l3_do_ioctl,
2976 .control_event_handler = qeth_l3_control_event,
2977};
2978EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2979
2980static int qeth_l3_handle_ip_event(struct qeth_card *card,
2981 struct qeth_ipaddr *addr,
2982 unsigned long event)
2983{
2984 switch (event) {
2985 case NETDEV_UP:
2986 spin_lock_bh(&card->ip_lock);
2987 qeth_l3_add_ip(card, addr);
2988 spin_unlock_bh(&card->ip_lock);
2989 return NOTIFY_OK;
2990 case NETDEV_DOWN:
2991 spin_lock_bh(&card->ip_lock);
2992 qeth_l3_delete_ip(card, addr);
2993 spin_unlock_bh(&card->ip_lock);
2994 return NOTIFY_OK;
2995 default:
2996 return NOTIFY_DONE;
2997 }
2998}
2999
3000static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
3001{
3002 if (is_vlan_dev(dev))
3003 dev = vlan_dev_real_dev(dev);
3004 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
3005 dev->netdev_ops == &qeth_l3_netdev_ops)
3006 return (struct qeth_card *) dev->ml_priv;
3007 return NULL;
3008}
3009
3010static int qeth_l3_ip_event(struct notifier_block *this,
3011 unsigned long event, void *ptr)
3012{
3013
3014 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3015 struct net_device *dev = ifa->ifa_dev->dev;
3016 struct qeth_ipaddr addr;
3017 struct qeth_card *card;
3018
3019 if (dev_net(dev) != &init_net)
3020 return NOTIFY_DONE;
3021
3022 card = qeth_l3_get_card_from_dev(dev);
3023 if (!card)
3024 return NOTIFY_DONE;
3025 QETH_CARD_TEXT(card, 3, "ipevent");
3026
3027 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
3028 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
3029 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
3030
3031 return qeth_l3_handle_ip_event(card, &addr, event);
3032}
3033
3034static struct notifier_block qeth_l3_ip_notifier = {
3035 qeth_l3_ip_event,
3036 NULL,
3037};
3038
3039static int qeth_l3_ip6_event(struct notifier_block *this,
3040 unsigned long event, void *ptr)
3041{
3042 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3043 struct net_device *dev = ifa->idev->dev;
3044 struct qeth_ipaddr addr;
3045 struct qeth_card *card;
3046
3047 card = qeth_l3_get_card_from_dev(dev);
3048 if (!card)
3049 return NOTIFY_DONE;
3050 QETH_CARD_TEXT(card, 3, "ip6event");
3051 if (!qeth_is_supported(card, IPA_IPV6))
3052 return NOTIFY_DONE;
3053
3054 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
3055 addr.u.a6.addr = ifa->addr;
3056 addr.u.a6.pfxlen = ifa->prefix_len;
3057
3058 return qeth_l3_handle_ip_event(card, &addr, event);
3059}
3060
3061static struct notifier_block qeth_l3_ip6_notifier = {
3062 qeth_l3_ip6_event,
3063 NULL,
3064};
3065
3066static int qeth_l3_register_notifiers(void)
3067{
3068 int rc;
3069
3070 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3071 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3072 if (rc)
3073 return rc;
3074 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3075 if (rc) {
3076 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3077 return rc;
3078 }
3079 return 0;
3080}
3081
3082static void qeth_l3_unregister_notifiers(void)
3083{
3084 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3085 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3086 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3087}
3088
3089static int __init qeth_l3_init(void)
3090{
3091 pr_info("register layer 3 discipline\n");
3092 return qeth_l3_register_notifiers();
3093}
3094
3095static void __exit qeth_l3_exit(void)
3096{
3097 qeth_l3_unregister_notifiers();
3098 pr_info("unregister layer 3 discipline\n");
3099}
3100
3101module_init(qeth_l3_init);
3102module_exit(qeth_l3_exit);
3103MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3104MODULE_DESCRIPTION("qeth layer 3 discipline");
3105MODULE_LICENSE("GPL");