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[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / net / qeth_l3_main.c
CommitLineData
4a71df50 1/*
bbcfcdc8 2 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
74eacdb9
FB		 9#define KMSG_COMPONENT "qeth"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
4a71df50
FB		 12#include <linux/module.h>
13#include <linux/moduleparam.h>
7ff0bcf6 14#include <linux/bitops.h>
4a71df50
FB		 15#include <linux/string.h>
16#include <linux/errno.h>
17#include <linux/kernel.h>
18#include <linux/etherdevice.h>
19#include <linux/mii.h>
20#include <linux/ip.h>
64ef8957 21#include <linux/ipv6.h>
4a71df50
FB		 22#include <linux/inetdevice.h>
23#include <linux/igmp.h>
5a0e3ad6 24#include <linux/slab.h>
7ff0bcf6 25#include <linux/if_vlan.h>
4a71df50
FB		 26
27#include <net/ip.h>
28#include <net/arp.h>
87e7597b
DM		 29#include <net/route.h>
30#include <net/ip6_fib.h>
64ef8957 31#include <net/ip6_checksum.h>
b3332930 32#include <net/iucv/af_iucv.h>
5f78e29c 33#include <linux/hashtable.h>
4a71df50 34
4a71df50 35#include "qeth_l3.h"
4a71df50 36
d0ddf30f 37
4a71df50
FB		 38static int qeth_l3_set_offline(struct ccwgroup_device *);
39static int qeth_l3_recover(void *);
40static int qeth_l3_stop(struct net_device *);
41static void qeth_l3_set_multicast_list(struct net_device *);
42static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
43static int qeth_l3_register_addr_entry(struct qeth_card *,
44 struct qeth_ipaddr *);
45static int qeth_l3_deregister_addr_entry(struct qeth_card *,
46 struct qeth_ipaddr *);
47static int __qeth_l3_set_online(struct ccwgroup_device *, int);
48static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
49
4a71df50
FB		 50static int qeth_l3_isxdigit(char *buf)
51{
52 while (*buf) {
53 if (!isxdigit(*buf++))
54 return 0;
55 }
56 return 1;
57}
58
56530d68 59static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
4a71df50 60{
5f78e29c 61 sprintf(buf, "%pI4", addr);
4a71df50
FB		 62}
63
56530d68 64static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
4a71df50
FB		 65{
66 int count = 0, rc = 0;
a68be015 67 unsigned int in[4];
4a71df50
FB		 68 char c;
69
70 rc = sscanf(buf, "%u.%u.%u.%u%c",
71 &in[0], &in[1], &in[2], &in[3], &c);
72 if (rc != 4 && (rc != 5 || c != '\n'))
73 return -EINVAL;
74 for (count = 0; count < 4; count++) {
75 if (in[count] > 255)
76 return -EINVAL;
77 addr[count] = in[count];
78 }
79 return 0;
80}
81
56530d68 82static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
4a71df50 83{
963a9fd2 84 sprintf(buf, "%pI6", addr);
4a71df50
FB		 85}
86
56530d68 87static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
4a71df50
FB		 88{
89 const char *end, *end_tmp, *start;
90 __u16 *in;
91 char num[5];
92 int num2, cnt, out, found, save_cnt;
93 unsigned short in_tmp[8] = {0, };
94
95 cnt = out = found = save_cnt = num2 = 0;
96 end = start = buf;
97 in = (__u16 *) addr;
98 memset(in, 0, 16);
99 while (*end) {
100 end = strchr(start, ':');
101 if (end == NULL) {
102 end = buf + strlen(buf);
103 end_tmp = strchr(start, '\n');
104 if (end_tmp != NULL)
105 end = end_tmp;
106 out = 1;
107 }
108 if ((end - start)) {
109 memset(num, 0, 5);
110 if ((end - start) > 4)
111 return -EINVAL;
112 memcpy(num, start, end - start);
113 if (!qeth_l3_isxdigit(num))
114 return -EINVAL;
115 sscanf(start, "%x", &num2);
116 if (found)
117 in_tmp[save_cnt++] = num2;
118 else
119 in[cnt++] = num2;
120 if (out)
121 break;
122 } else {
123 if (found)
124 return -EINVAL;
125 found = 1;
126 }
127 start = ++end;
128 }
129 if (cnt + save_cnt > 8)
130 return -EINVAL;
131 cnt = 7;
132 while (save_cnt)
133 in[cnt--] = in_tmp[--save_cnt];
134 return 0;
135}
136
137void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
138 char *buf)
139{
140 if (proto == QETH_PROT_IPV4)
141 qeth_l3_ipaddr4_to_string(addr, buf);
142 else if (proto == QETH_PROT_IPV6)
143 qeth_l3_ipaddr6_to_string(addr, buf);
144}
145
146int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
147 __u8 *addr)
148{
149 if (proto == QETH_PROT_IPV4)
150 return qeth_l3_string_to_ipaddr4(buf, addr);
151 else if (proto == QETH_PROT_IPV6)
152 return qeth_l3_string_to_ipaddr6(buf, addr);
153 else
154 return -EINVAL;
155}
156
157static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
158{
159 int i, j;
160 u8 octet;
161
162 for (i = 0; i < len; ++i) {
163 octet = addr[i];
164 for (j = 7; j >= 0; --j) {
165 bits[i*8 + j] = octet & 1;
166 octet >>= 1;
167 }
168 }
169}
170
6298263a 171int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
4a71df50
FB		 172 struct qeth_ipaddr *addr)
173{
174 struct qeth_ipato_entry *ipatoe;
175 u8 addr_bits[128] = {0, };
176 u8 ipatoe_bits[128] = {0, };
177 int rc = 0;
178
179 if (!card->ipato.enabled)
180 return 0;
181
182 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
183 (addr->proto == QETH_PROT_IPV4)? 4:16);
184 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
185 if (addr->proto != ipatoe->proto)
186 continue;
187 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
188 (ipatoe->proto == QETH_PROT_IPV4) ?
189 4 : 16);
190 if (addr->proto == QETH_PROT_IPV4)
191 rc = !memcmp(addr_bits, ipatoe_bits,
192 min(32, ipatoe->mask_bits));
193 else
194 rc = !memcmp(addr_bits, ipatoe_bits,
195 min(128, ipatoe->mask_bits));
196 if (rc)
197 break;
198 }
199 /* invert? */
200 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
201 rc = !rc;
202 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
203 rc = !rc;
204
205 return rc;
206}
207
5f78e29c
LD		 208inline int
209qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
4a71df50 210{
5f78e29c
LD		 211 return addr1->proto == addr2->proto &&
212 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u)) &&
213 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
214}
4a71df50 215
5f78e29c
LD		 216static struct qeth_ipaddr *
217qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
218{
219 struct qeth_ipaddr *addr;
220
221 if (tmp_addr->is_multicast) {
222 hash_for_each_possible(card->ip_mc_htable, addr,
223 hnode, qeth_l3_ipaddr_hash(tmp_addr))
224 if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
225 return addr;
4a71df50 226 } else {
5f78e29c
LD		 227 hash_for_each_possible(card->ip_htable, addr,
228 hnode, qeth_l3_ipaddr_hash(tmp_addr))
229 if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
230 return addr;
4a71df50 231 }
5f78e29c
LD		 232
233 return NULL;
4a71df50
FB		 234}
235
5f78e29c 236int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
4a71df50 237{
4a71df50 238 int rc = 0;
5f78e29c 239 struct qeth_ipaddr *addr;
4a71df50 240
847a50fd 241 QETH_CARD_TEXT(card, 4, "delip");
4a71df50 242
5f78e29c
LD		 243 if (tmp_addr->proto == QETH_PROT_IPV4)
244 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
4a71df50 245 else {
5f78e29c
LD		 246 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
247 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
4a71df50 248 }
5f78e29c
LD		 249
250 addr = qeth_l3_ip_from_hash(card, tmp_addr);
251 if (!addr)
252 return -ENOENT;
253
254 addr->ref_counter--;
255 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
256 return rc;
257 if (addr->in_progress)
258 return -EINPROGRESS;
259
a7531c1c
UB		 260 if (!qeth_card_hw_is_reachable(card)) {
261 addr->disp_flag = QETH_DISP_ADDR_DELETE;
262 return 0;
263 }
264
5f78e29c
LD		 265 rc = qeth_l3_deregister_addr_entry(card, addr);
266
267 hash_del(&addr->hnode);
268 kfree(addr);
269
4a71df50
FB		 270 return rc;
271}
272
5f78e29c 273int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
4a71df50 274{
4a71df50 275 int rc = 0;
5f78e29c 276 struct qeth_ipaddr *addr;
4a71df50 277
847a50fd 278 QETH_CARD_TEXT(card, 4, "addip");
5f78e29c
LD		 279
280 if (tmp_addr->proto == QETH_PROT_IPV4)
281 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
4a71df50 282 else {
5f78e29c
LD		 283 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
284 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
285 }
286
287 addr = qeth_l3_ip_from_hash(card, tmp_addr);
288 if (!addr) {
289 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
290 if (!addr)
291 return -ENOMEM;
292
293 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
294 addr->ref_counter = 1;
295
296 if (addr->type == QETH_IP_TYPE_NORMAL &&
297 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
298 QETH_CARD_TEXT(card, 2, "tkovaddr");
299 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
300 }
301 hash_add(card->ip_htable, &addr->hnode,
302 qeth_l3_ipaddr_hash(addr));
303
a7531c1c
UB		 304 if (!qeth_card_hw_is_reachable(card)) {
305 addr->disp_flag = QETH_DISP_ADDR_ADD;
306 return 0;
307 }
308
5f78e29c
LD		 309 /* qeth_l3_register_addr_entry can go to sleep
310 * if we add a IPV4 addr. It is caused by the reason
311 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
312 * Thus we should unlock spinlock, and make a protection
313 * using in_progress variable to indicate that there is
314 * an hardware operation with this IPV4 address
315 */
316 if (addr->proto == QETH_PROT_IPV4) {
317 addr->in_progress = 1;
318 spin_unlock_bh(&card->ip_lock);
319 rc = qeth_l3_register_addr_entry(card, addr);
320 spin_lock_bh(&card->ip_lock);
321 addr->in_progress = 0;
322 } else
323 rc = qeth_l3_register_addr_entry(card, addr);
324
325 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
326 (rc == IPA_RC_LAN_OFFLINE)) {
327 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
328 if (addr->ref_counter < 1) {
329 qeth_l3_delete_ip(card, addr);
330 kfree(addr);
331 }
332 } else {
333 hash_del(&addr->hnode);
334 kfree(addr);
335 }
336 } else {
337 if (addr->type == QETH_IP_TYPE_NORMAL)
338 addr->ref_counter++;
4a71df50 339 }
5f78e29c 340
4a71df50
FB		 341 return rc;
342}
343
344
b3332930 345struct qeth_ipaddr *qeth_l3_get_addr_buffer(
4a71df50
FB		 346 enum qeth_prot_versions prot)
347{
348 struct qeth_ipaddr *addr;
349
350 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
5f78e29c 351 if (!addr)
4a71df50 352 return NULL;
5f78e29c 353
4a71df50 354 addr->type = QETH_IP_TYPE_NORMAL;
5f78e29c 355 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
4a71df50 356 addr->proto = prot;
4a71df50 357
5f78e29c 358 return addr;
4a71df50
FB		 359}
360
5f78e29c 361static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
4a71df50
FB		 362{
363 struct qeth_ipaddr *addr;
5f78e29c
LD		 364 struct hlist_node *tmp;
365 int i;
4a71df50 366
5f78e29c 367 QETH_CARD_TEXT(card, 4, "clearip");
4a71df50 368
5f78e29c 369 if (recover && card->options.sniffer)
76b11f8e 370 return;
f154b79c 371
5f78e29c
LD		 372 spin_lock_bh(&card->ip_lock);
373
374 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
375 if (!recover) {
376 hash_del(&addr->hnode);
377 kfree(addr);
4a71df50
FB		 378 continue;
379 }
5f78e29c 380 addr->disp_flag = QETH_DISP_ADDR_ADD;
4a71df50 381 }
4a71df50 382
5f78e29c 383 spin_unlock_bh(&card->ip_lock);
4a71df50 384
5f78e29c
LD		 385 spin_lock_bh(&card->mclock);
386
387 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
388 hash_del(&addr->hnode);
4a71df50
FB		 389 kfree(addr);
390 }
391
5f78e29c
LD		 392 spin_unlock_bh(&card->mclock);
393
4a71df50 394
5f78e29c
LD		 395}
396static void qeth_l3_recover_ip(struct qeth_card *card)
4a71df50 397{
5f78e29c
LD		 398 struct qeth_ipaddr *addr;
399 struct hlist_node *tmp;
400 int i;
401 int rc;
4a71df50 402
a7531c1c 403 QETH_CARD_TEXT(card, 4, "recovrip");
5f78e29c
LD		 404
405 spin_lock_bh(&card->ip_lock);
406
407 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
a7531c1c
UB		 408 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
409 qeth_l3_deregister_addr_entry(card, addr);
410 hash_del(&addr->hnode);
411 kfree(addr);
412 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
5f78e29c
LD		 413 if (addr->proto == QETH_PROT_IPV4) {
414 addr->in_progress = 1;
415 spin_unlock_bh(&card->ip_lock);
416 rc = qeth_l3_register_addr_entry(card, addr);
417 spin_lock_bh(&card->ip_lock);
418 addr->in_progress = 0;
419 } else
420 rc = qeth_l3_register_addr_entry(card, addr);
421
422 if (!rc) {
423 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
a7531c1c 424 if (addr->ref_counter < 1)
5f78e29c 425 qeth_l3_delete_ip(card, addr);
5f78e29c
LD		 426 } else {
427 hash_del(&addr->hnode);
428 kfree(addr);
429 }
430 }
431 }
4a71df50 432
5f78e29c 433 spin_unlock_bh(&card->ip_lock);
4a71df50 434
4a71df50
FB		 435}
436
437static int qeth_l3_send_setdelmc(struct qeth_card *card,
438 struct qeth_ipaddr *addr, int ipacmd)
439{
440 int rc;
441 struct qeth_cmd_buffer *iob;
442 struct qeth_ipa_cmd *cmd;
443
847a50fd 444 QETH_CARD_TEXT(card, 4, "setdelmc");
4a71df50
FB		 445
446 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
1aec42bc
TR		 447 if (!iob)
448 return -ENOMEM;
4a71df50
FB		 449 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
450 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
451 if (addr->proto == QETH_PROT_IPV6)
452 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
453 sizeof(struct in6_addr));
454 else
455 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
456
457 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
458
459 return rc;
460}
461
462static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
463{
464 int i, j;
465 for (i = 0; i < 16; i++) {
466 j = (len) - (i * 8);
467 if (j >= 8)
468 netmask[i] = 0xff;
469 else if (j > 0)
470 netmask[i] = (u8)(0xFF00 >> j);
471 else
472 netmask[i] = 0;
473 }
474}
475
476static int qeth_l3_send_setdelip(struct qeth_card *card,
477 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
478{
479 int rc;
480 struct qeth_cmd_buffer *iob;
481 struct qeth_ipa_cmd *cmd;
482 __u8 netmask[16];
483
847a50fd
CO		 484 QETH_CARD_TEXT(card, 4, "setdelip");
485 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
4a71df50
FB		 486
487 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
1aec42bc
TR		 488 if (!iob)
489 return -ENOMEM;
4a71df50
FB		 490 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
491 if (addr->proto == QETH_PROT_IPV6) {
492 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
493 sizeof(struct in6_addr));
494 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
495 memcpy(cmd->data.setdelip6.mask, netmask,
496 sizeof(struct in6_addr));
497 cmd->data.setdelip6.flags = flags;
498 } else {
499 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
500 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
501 cmd->data.setdelip4.flags = flags;
502 }
503
504 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
505
506 return rc;
507}
508
509static int qeth_l3_send_setrouting(struct qeth_card *card,
510 enum qeth_routing_types type, enum qeth_prot_versions prot)
511{
512 int rc;
513 struct qeth_ipa_cmd *cmd;
514 struct qeth_cmd_buffer *iob;
515
847a50fd 516 QETH_CARD_TEXT(card, 4, "setroutg");
4a71df50 517 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
1aec42bc
TR		 518 if (!iob)
519 return -ENOMEM;
4a71df50
FB		 520 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
521 cmd->data.setrtg.type = (type);
522 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
523
524 return rc;
525}
526
82e2e782 527static int qeth_l3_correct_routing_type(struct qeth_card *card,
4a71df50
FB		 528 enum qeth_routing_types *type, enum qeth_prot_versions prot)
529{
530 if (card->info.type == QETH_CARD_TYPE_IQD) {
531 switch (*type) {
532 case NO_ROUTER:
533 case PRIMARY_CONNECTOR:
534 case SECONDARY_CONNECTOR:
535 case MULTICAST_ROUTER:
82e2e782 536 return 0;
4a71df50
FB		 537 default:
538 goto out_inval;
539 }
540 } else {
541 switch (*type) {
542 case NO_ROUTER:
543 case PRIMARY_ROUTER:
544 case SECONDARY_ROUTER:
82e2e782 545 return 0;
4a71df50
FB		 546 case MULTICAST_ROUTER:
547 if (qeth_is_ipafunc_supported(card, prot,
548 IPA_OSA_MC_ROUTER))
82e2e782 549 return 0;
4a71df50
FB		 550 default:
551 goto out_inval;
552 }
553 }
554out_inval:
4a71df50 555 *type = NO_ROUTER;
82e2e782 556 return -EINVAL;
4a71df50
FB		 557}
558
559int qeth_l3_setrouting_v4(struct qeth_card *card)
560{
561 int rc;
562
847a50fd 563 QETH_CARD_TEXT(card, 3, "setrtg4");
4a71df50 564
82e2e782 565 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
4a71df50 566 QETH_PROT_IPV4);
82e2e782
SR		 567 if (rc)
568 return rc;
4a71df50
FB		 569
570 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
571 QETH_PROT_IPV4);
572 if (rc) {
573 card->options.route4.type = NO_ROUTER;
14cc21b6
FB		 574 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
575 " on %s. Type set to 'no router'.\n", rc,
576 QETH_CARD_IFNAME(card));
4a71df50
FB		 577 }
578 return rc;
579}
580
581int qeth_l3_setrouting_v6(struct qeth_card *card)
582{
583 int rc = 0;
584
847a50fd 585 QETH_CARD_TEXT(card, 3, "setrtg6");
4a71df50
FB		 586#ifdef CONFIG_QETH_IPV6
587
588 if (!qeth_is_supported(card, IPA_IPV6))
589 return 0;
82e2e782 590 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
4a71df50 591 QETH_PROT_IPV6);
82e2e782
SR		 592 if (rc)
593 return rc;
4a71df50
FB		 594
595 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
596 QETH_PROT_IPV6);
597 if (rc) {
598 card->options.route6.type = NO_ROUTER;
14cc21b6
FB		 599 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
600 " on %s. Type set to 'no router'.\n", rc,
601 QETH_CARD_IFNAME(card));
4a71df50
FB		 602 }
603#endif
604 return rc;
605}
606
607/*
608 * IP address takeover related functions
609 */
610static void qeth_l3_clear_ipato_list(struct qeth_card *card)
611{
4a71df50 612 struct qeth_ipato_entry *ipatoe, *tmp;
4a71df50 613
5f78e29c
LD		 614 spin_lock_bh(&card->ip_lock);
615
4a71df50
FB		 616 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
617 list_del(&ipatoe->entry);
618 kfree(ipatoe);
619 }
5f78e29c
LD		 620
621 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 622}
623
624int qeth_l3_add_ipato_entry(struct qeth_card *card,
625 struct qeth_ipato_entry *new)
626{
627 struct qeth_ipato_entry *ipatoe;
4a71df50
FB		 628 int rc = 0;
629
847a50fd 630 QETH_CARD_TEXT(card, 2, "addipato");
5f78e29c
LD		 631
632 spin_lock_bh(&card->ip_lock);
633
4a71df50
FB		 634 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
635 if (ipatoe->proto != new->proto)
636 continue;
637 if (!memcmp(ipatoe->addr, new->addr,
638 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
639 (ipatoe->mask_bits == new->mask_bits)) {
4a71df50
FB		 640 rc = -EEXIST;
641 break;
642 }
643 }
5f78e29c 644
4a71df50
FB		 645 if (!rc)
646 list_add_tail(&new->entry, &card->ipato.entries);
647
5f78e29c
LD		 648 spin_unlock_bh(&card->ip_lock);
649
4a71df50
FB		 650 return rc;
651}
652
653void qeth_l3_del_ipato_entry(struct qeth_card *card,
654 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
655{
656 struct qeth_ipato_entry *ipatoe, *tmp;
4a71df50 657
847a50fd 658 QETH_CARD_TEXT(card, 2, "delipato");
5f78e29c
LD		 659
660 spin_lock_bh(&card->ip_lock);
661
4a71df50
FB		 662 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
663 if (ipatoe->proto != proto)
664 continue;
665 if (!memcmp(ipatoe->addr, addr,
666 (proto == QETH_PROT_IPV4)? 4:16) &&
667 (ipatoe->mask_bits == mask_bits)) {
668 list_del(&ipatoe->entry);
669 kfree(ipatoe);
670 }
671 }
5f78e29c
LD		 672
673 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 674}
675
676/*
677 * VIPA related functions
678 */
679int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
680 const u8 *addr)
681{
682 struct qeth_ipaddr *ipaddr;
4a71df50
FB		 683 int rc = 0;
684
685 ipaddr = qeth_l3_get_addr_buffer(proto);
686 if (ipaddr) {
687 if (proto == QETH_PROT_IPV4) {
847a50fd 688 QETH_CARD_TEXT(card, 2, "addvipa4");
4a71df50
FB		 689 memcpy(&ipaddr->u.a4.addr, addr, 4);
690 ipaddr->u.a4.mask = 0;
691 } else if (proto == QETH_PROT_IPV6) {
847a50fd 692 QETH_CARD_TEXT(card, 2, "addvipa6");
4a71df50
FB		 693 memcpy(&ipaddr->u.a6.addr, addr, 16);
694 ipaddr->u.a6.pfxlen = 0;
695 }
696 ipaddr->type = QETH_IP_TYPE_VIPA;
697 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
698 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
699 } else
700 return -ENOMEM;
5f78e29c
LD		 701
702 spin_lock_bh(&card->ip_lock);
703
732a59cb 704 if (qeth_l3_ip_from_hash(card, ipaddr))
4a71df50 705 rc = -EEXIST;
5f78e29c
LD		 706 else
707 qeth_l3_add_ip(card, ipaddr);
708
709 spin_unlock_bh(&card->ip_lock);
710
711 kfree(ipaddr);
712
4a71df50
FB		 713 return rc;
714}
715
716void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
717 const u8 *addr)
718{
719 struct qeth_ipaddr *ipaddr;
720
721 ipaddr = qeth_l3_get_addr_buffer(proto);
722 if (ipaddr) {
723 if (proto == QETH_PROT_IPV4) {
847a50fd 724 QETH_CARD_TEXT(card, 2, "delvipa4");
4a71df50
FB		 725 memcpy(&ipaddr->u.a4.addr, addr, 4);
726 ipaddr->u.a4.mask = 0;
727 } else if (proto == QETH_PROT_IPV6) {
847a50fd 728 QETH_CARD_TEXT(card, 2, "delvipa6");
4a71df50
FB		 729 memcpy(&ipaddr->u.a6.addr, addr, 16);
730 ipaddr->u.a6.pfxlen = 0;
731 }
732 ipaddr->type = QETH_IP_TYPE_VIPA;
733 } else
734 return;
5f78e29c
LD		 735
736 spin_lock_bh(&card->ip_lock);
737 qeth_l3_delete_ip(card, ipaddr);
738 spin_unlock_bh(&card->ip_lock);
739
740 kfree(ipaddr);
4a71df50
FB		 741}
742
743/*
744 * proxy ARP related functions
745 */
746int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
747 const u8 *addr)
748{
749 struct qeth_ipaddr *ipaddr;
4a71df50
FB		 750 int rc = 0;
751
752 ipaddr = qeth_l3_get_addr_buffer(proto);
753 if (ipaddr) {
754 if (proto == QETH_PROT_IPV4) {
847a50fd 755 QETH_CARD_TEXT(card, 2, "addrxip4");
4a71df50
FB		 756 memcpy(&ipaddr->u.a4.addr, addr, 4);
757 ipaddr->u.a4.mask = 0;
758 } else if (proto == QETH_PROT_IPV6) {
847a50fd 759 QETH_CARD_TEXT(card, 2, "addrxip6");
4a71df50
FB		 760 memcpy(&ipaddr->u.a6.addr, addr, 16);
761 ipaddr->u.a6.pfxlen = 0;
762 }
5f78e29c 763
4a71df50
FB		 764 ipaddr->type = QETH_IP_TYPE_RXIP;
765 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
766 ipaddr->del_flags = 0;
767 } else
768 return -ENOMEM;
5f78e29c
LD		 769
770 spin_lock_bh(&card->ip_lock);
771
732a59cb 772 if (qeth_l3_ip_from_hash(card, ipaddr))
4a71df50 773 rc = -EEXIST;
5f78e29c
LD		 774 else
775 qeth_l3_add_ip(card, ipaddr);
776
777 spin_unlock_bh(&card->ip_lock);
778
779 kfree(ipaddr);
780
781 return rc;
4a71df50
FB		 782}
783
784void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
785 const u8 *addr)
786{
787 struct qeth_ipaddr *ipaddr;
788
789 ipaddr = qeth_l3_get_addr_buffer(proto);
790 if (ipaddr) {
791 if (proto == QETH_PROT_IPV4) {
847a50fd 792 QETH_CARD_TEXT(card, 2, "addrxip4");
4a71df50
FB		 793 memcpy(&ipaddr->u.a4.addr, addr, 4);
794 ipaddr->u.a4.mask = 0;
795 } else if (proto == QETH_PROT_IPV6) {
847a50fd 796 QETH_CARD_TEXT(card, 2, "addrxip6");
4a71df50
FB		 797 memcpy(&ipaddr->u.a6.addr, addr, 16);
798 ipaddr->u.a6.pfxlen = 0;
799 }
800 ipaddr->type = QETH_IP_TYPE_RXIP;
801 } else
802 return;
5f78e29c
LD		 803
804 spin_lock_bh(&card->ip_lock);
805 qeth_l3_delete_ip(card, ipaddr);
806 spin_unlock_bh(&card->ip_lock);
807
808 kfree(ipaddr);
4a71df50
FB		 809}
810
811static int qeth_l3_register_addr_entry(struct qeth_card *card,
812 struct qeth_ipaddr *addr)
813{
814 char buf[50];
815 int rc = 0;
816 int cnt = 3;
817
5f78e29c 818
4a71df50 819 if (addr->proto == QETH_PROT_IPV4) {
847a50fd
CO		 820 QETH_CARD_TEXT(card, 2, "setaddr4");
821 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
4a71df50 822 } else if (addr->proto == QETH_PROT_IPV6) {
847a50fd
CO		 823 QETH_CARD_TEXT(card, 2, "setaddr6");
824 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
825 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
4a71df50 826 } else {
847a50fd
CO		 827 QETH_CARD_TEXT(card, 2, "setaddr?");
828 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
4a71df50
FB		 829 }
830 do {
831 if (addr->is_multicast)
832 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
833 else
834 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
835 addr->set_flags);
836 if (rc)
847a50fd 837 QETH_CARD_TEXT(card, 2, "failed");
4a71df50
FB		 838 } while ((--cnt > 0) && rc);
839 if (rc) {
847a50fd 840 QETH_CARD_TEXT(card, 2, "FAILED");
4a71df50 841 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
74eacdb9
FB		 842 dev_warn(&card->gdev->dev,
843 "Registering IP address %s failed\n", buf);
4a71df50
FB		 844 }
845 return rc;
846}
847
848static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
849 struct qeth_ipaddr *addr)
850{
851 int rc = 0;
852
853 if (addr->proto == QETH_PROT_IPV4) {
847a50fd
CO		 854 QETH_CARD_TEXT(card, 2, "deladdr4");
855 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
4a71df50 856 } else if (addr->proto == QETH_PROT_IPV6) {
847a50fd
CO		 857 QETH_CARD_TEXT(card, 2, "deladdr6");
858 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
859 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
4a71df50 860 } else {
847a50fd
CO		 861 QETH_CARD_TEXT(card, 2, "deladdr?");
862 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
4a71df50
FB		 863 }
864 if (addr->is_multicast)
865 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
866 else
867 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
868 addr->del_flags);
c4cef07c 869 if (rc)
847a50fd 870 QETH_CARD_TEXT(card, 2, "failed");
4a71df50
FB		 871
872 return rc;
873}
874
875static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
876{
877 if (cast_type == RTN_MULTICAST)
878 return QETH_CAST_MULTICAST;
879 if (cast_type == RTN_BROADCAST)
880 return QETH_CAST_BROADCAST;
881 return QETH_CAST_UNICAST;
882}
883
884static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
885{
886 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
887 if (cast_type == RTN_MULTICAST)
888 return ct | QETH_CAST_MULTICAST;
889 if (cast_type == RTN_ANYCAST)
890 return ct | QETH_CAST_ANYCAST;
891 if (cast_type == RTN_BROADCAST)
892 return ct | QETH_CAST_BROADCAST;
893 return ct | QETH_CAST_UNICAST;
894}
895
4a71df50
FB		 896static int qeth_l3_setadapter_parms(struct qeth_card *card)
897{
898 int rc;
899
d11ba0c4 900 QETH_DBF_TEXT(SETUP, 2, "setadprm");
4a71df50
FB		 901
902 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
74eacdb9
FB		 903 dev_info(&card->gdev->dev,
904 "set adapter parameters not supported.\n");
d11ba0c4 905 QETH_DBF_TEXT(SETUP, 2, " notsupp");
4a71df50
FB		 906 return 0;
907 }
908 rc = qeth_query_setadapterparms(card);
909 if (rc) {
74eacdb9 910 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
7f6d95e7 911 "0x%x\n", dev_name(&card->gdev->dev), rc);
4a71df50
FB		 912 return rc;
913 }
914 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
915 rc = qeth_setadpparms_change_macaddr(card);
916 if (rc)
74eacdb9 917 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
6ea2fde1 918 " address failed\n");
4a71df50
FB		 919 }
920
4a71df50
FB		 921 return rc;
922}
923
4a71df50
FB		 924#ifdef CONFIG_QETH_IPV6
925static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
926 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
927{
928 int rc;
929 struct qeth_cmd_buffer *iob;
930
847a50fd 931 QETH_CARD_TEXT(card, 4, "simassp6");
b475e316 932 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
4a71df50 933 0, QETH_PROT_IPV6);
1aec42bc
TR		 934 if (!iob)
935 return -ENOMEM;
4d7def2a 936 rc = qeth_send_setassparms(card, iob, 0, 0,
8f43fb00 937 qeth_setassparms_cb, NULL);
4a71df50
FB		 938 return rc;
939}
940#endif
941
4a71df50
FB		 942static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
943{
944 int rc;
945
847a50fd 946 QETH_CARD_TEXT(card, 3, "ipaarp");
4a71df50
FB		 947
948 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
74eacdb9
FB		 949 dev_info(&card->gdev->dev,
950 "ARP processing not supported on %s!\n",
951 QETH_CARD_IFNAME(card));
4a71df50
FB		 952 return 0;
953 }
4d7def2a
TR		 954 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
955 IPA_CMD_ASS_START, 0);
4a71df50 956 if (rc) {
74eacdb9
FB		 957 dev_warn(&card->gdev->dev,
958 "Starting ARP processing support for %s failed\n",
959 QETH_CARD_IFNAME(card));
4a71df50
FB		 960 }
961 return rc;
962}
963
964static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
965{
966 int rc;
967
847a50fd 968 QETH_CARD_TEXT(card, 3, "ipaipfrg");
4a71df50
FB		 969
970 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
74eacdb9
FB		 971 dev_info(&card->gdev->dev,
972 "Hardware IP fragmentation not supported on %s\n",
973 QETH_CARD_IFNAME(card));
4a71df50
FB		 974 return -EOPNOTSUPP;
975 }
976
4d7def2a 977 rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
4a71df50
FB		 978 IPA_CMD_ASS_START, 0);
979 if (rc) {
74eacdb9
FB		 980 dev_warn(&card->gdev->dev,
981 "Starting IP fragmentation support for %s failed\n",
982 QETH_CARD_IFNAME(card));
4a71df50 983 } else
74eacdb9
FB		 984 dev_info(&card->gdev->dev,
985 "Hardware IP fragmentation enabled \n");
4a71df50
FB		 986 return rc;
987}
988
989static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
990{
991 int rc;
992
847a50fd 993 QETH_CARD_TEXT(card, 3, "stsrcmac");
4a71df50 994
4a71df50 995 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
74eacdb9 996 dev_info(&card->gdev->dev,
fe94e2e0 997 "Inbound source MAC-address not supported on %s\n",
74eacdb9 998 QETH_CARD_IFNAME(card));
4a71df50
FB		 999 return -EOPNOTSUPP;
1000 }
1001
4d7def2a 1002 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
4a71df50
FB		 1003 IPA_CMD_ASS_START, 0);
1004 if (rc)
74eacdb9 1005 dev_warn(&card->gdev->dev,
fe94e2e0 1006 "Starting source MAC-address support for %s failed\n",
74eacdb9 1007 QETH_CARD_IFNAME(card));
4a71df50
FB		 1008 return rc;
1009}
1010
1011static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1012{
1013 int rc = 0;
1014
847a50fd 1015 QETH_CARD_TEXT(card, 3, "strtvlan");
4a71df50
FB		 1016
1017 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
74eacdb9
FB		 1018 dev_info(&card->gdev->dev,
1019 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 1020 return -EOPNOTSUPP;
1021 }
1022
4d7def2a 1023 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
4a71df50
FB		 1024 IPA_CMD_ASS_START, 0);
1025 if (rc) {
74eacdb9
FB		 1026 dev_warn(&card->gdev->dev,
1027 "Starting VLAN support for %s failed\n",
1028 QETH_CARD_IFNAME(card));
4a71df50 1029 } else {
74eacdb9 1030 dev_info(&card->gdev->dev, "VLAN enabled\n");
4a71df50
FB		 1031 }
1032 return rc;
1033}
1034
1035static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1036{
1037 int rc;
1038
847a50fd 1039 QETH_CARD_TEXT(card, 3, "stmcast");
4a71df50
FB		 1040
1041 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
74eacdb9
FB		 1042 dev_info(&card->gdev->dev,
1043 "Multicast not supported on %s\n",
1044 QETH_CARD_IFNAME(card));
4a71df50
FB		 1045 return -EOPNOTSUPP;
1046 }
1047
4d7def2a 1048 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
4a71df50
FB		 1049 IPA_CMD_ASS_START, 0);
1050 if (rc) {
74eacdb9
FB		 1051 dev_warn(&card->gdev->dev,
1052 "Starting multicast support for %s failed\n",
1053 QETH_CARD_IFNAME(card));
4a71df50 1054 } else {
74eacdb9 1055 dev_info(&card->gdev->dev, "Multicast enabled\n");
4a71df50
FB		 1056 card->dev->flags |= IFF_MULTICAST;
1057 }
1058 return rc;
1059}
1060
4a71df50
FB		 1061#ifdef CONFIG_QETH_IPV6
1062static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1063{
1064 int rc;
1065
847a50fd 1066 QETH_CARD_TEXT(card, 3, "softipv6");
4a71df50
FB		 1067
1068 if (card->info.type == QETH_CARD_TYPE_IQD)
1069 goto out;
1070
1da74b1c 1071 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
4a71df50 1072 if (rc) {
74eacdb9
FB		 1073 dev_err(&card->gdev->dev,
1074 "Activating IPv6 support for %s failed\n",
1075 QETH_CARD_IFNAME(card));
4a71df50
FB		 1076 return rc;
1077 }
4d7def2a 1078 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
4a71df50
FB		 1079 IPA_CMD_ASS_START, 3);
1080 if (rc) {
74eacdb9
FB		 1081 dev_err(&card->gdev->dev,
1082 "Activating IPv6 support for %s failed\n",
1083 QETH_CARD_IFNAME(card));
4a71df50
FB		 1084 return rc;
1085 }
1086 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1087 IPA_CMD_ASS_START);
1088 if (rc) {
74eacdb9
FB		 1089 dev_err(&card->gdev->dev,
1090 "Activating IPv6 support for %s failed\n",
1091 QETH_CARD_IFNAME(card));
4a71df50
FB		 1092 return rc;
1093 }
1094 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1095 IPA_CMD_ASS_START);
1096 if (rc) {
74eacdb9
FB		 1097 dev_warn(&card->gdev->dev,
1098 "Enabling the passthrough mode for %s failed\n",
1099 QETH_CARD_IFNAME(card));
4a71df50
FB		 1100 return rc;
1101 }
1102out:
74eacdb9 1103 dev_info(&card->gdev->dev, "IPV6 enabled\n");
4a71df50
FB		 1104 return 0;
1105}
1106#endif
1107
1108static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1109{
1110 int rc = 0;
1111
847a50fd 1112 QETH_CARD_TEXT(card, 3, "strtipv6");
4a71df50
FB		 1113
1114 if (!qeth_is_supported(card, IPA_IPV6)) {
74eacdb9
FB		 1115 dev_info(&card->gdev->dev,
1116 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 1117 return 0;
1118 }
1119#ifdef CONFIG_QETH_IPV6
1120 rc = qeth_l3_softsetup_ipv6(card);
1121#endif
1122 return rc ;
1123}
1124
1125static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1126{
1127 int rc;
1128
847a50fd 1129 QETH_CARD_TEXT(card, 3, "stbrdcst");
4a71df50
FB		 1130 card->info.broadcast_capable = 0;
1131 if (!qeth_is_supported(card, IPA_FILTERING)) {
74eacdb9
FB		 1132 dev_info(&card->gdev->dev,
1133 "Broadcast not supported on %s\n",
1134 QETH_CARD_IFNAME(card));
4a71df50
FB		 1135 rc = -EOPNOTSUPP;
1136 goto out;
1137 }
4d7def2a 1138 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
4a71df50
FB		 1139 IPA_CMD_ASS_START, 0);
1140 if (rc) {
74eacdb9
FB		 1141 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1142 "%s failed\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 1143 goto out;
1144 }
1145
4d7def2a 1146 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
4a71df50
FB		 1147 IPA_CMD_ASS_CONFIGURE, 1);
1148 if (rc) {
74eacdb9
FB		 1149 dev_warn(&card->gdev->dev,
1150 "Setting up broadcast filtering for %s failed\n",
1151 QETH_CARD_IFNAME(card));
4a71df50
FB		 1152 goto out;
1153 }
1154 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
74eacdb9 1155 dev_info(&card->gdev->dev, "Broadcast enabled\n");
4d7def2a 1156 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
4a71df50
FB		 1157 IPA_CMD_ASS_ENABLE, 1);
1158 if (rc) {
74eacdb9
FB		 1159 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1160 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 1161 goto out;
1162 }
1163 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1164out:
1165 if (card->info.broadcast_capable)
1166 card->dev->flags |= IFF_BROADCAST;
1167 else
1168 card->dev->flags &= ~IFF_BROADCAST;
1169 return rc;
1170}
1171
4a71df50
FB		 1172static int qeth_l3_start_ipassists(struct qeth_card *card)
1173{
847a50fd 1174 QETH_CARD_TEXT(card, 3, "strtipas");
d64ecc22 1175
0f54761d
SR		 1176 if (qeth_set_access_ctrl_online(card, 0))
1177 return -EIO;
4a71df50
FB		 1178 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1179 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1180 qeth_l3_start_ipa_source_mac(card); /* go on*/
1181 qeth_l3_start_ipa_vlan(card); /* go on*/
1182 qeth_l3_start_ipa_multicast(card); /* go on*/
1183 qeth_l3_start_ipa_ipv6(card); /* go on*/
1184 qeth_l3_start_ipa_broadcast(card); /* go on*/
4a71df50
FB		 1185 return 0;
1186}
1187
4a71df50
FB		 1188static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1189 struct qeth_reply *reply, unsigned long data)
1190{
1191 struct qeth_ipa_cmd *cmd;
1192
1193 cmd = (struct qeth_ipa_cmd *) data;
1194 if (cmd->hdr.return_code == 0)
1195 memcpy(card->dev->dev_addr,
1196 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1197 else
1833611d 1198 eth_random_addr(card->dev->dev_addr);
4a71df50
FB		 1199
1200 return 0;
1201}
1202
1203static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1204{
1205 int rc = 0;
1206 struct qeth_cmd_buffer *iob;
1207 struct qeth_ipa_cmd *cmd;
1208
d11ba0c4 1209 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
4a71df50
FB		 1210
1211 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1212 QETH_PROT_IPV6);
1aec42bc
TR		 1213 if (!iob)
1214 return -ENOMEM;
4a71df50
FB		 1215 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1216 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1217 card->info.unique_id;
1218
1219 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1220 NULL);
1221 return rc;
1222}
1223
1224static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1225 struct qeth_reply *reply, unsigned long data)
1226{
1227 struct qeth_ipa_cmd *cmd;
1228
1229 cmd = (struct qeth_ipa_cmd *) data;
1230 if (cmd->hdr.return_code == 0)
1231 card->info.unique_id = *((__u16 *)
1232 &cmd->data.create_destroy_addr.unique_id[6]);
1233 else {
1234 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1235 UNIQUE_ID_NOT_BY_CARD;
74eacdb9
FB		 1236 dev_warn(&card->gdev->dev, "The network adapter failed to "
1237 "generate a unique ID\n");
4a71df50
FB		 1238 }
1239 return 0;
1240}
1241
1242static int qeth_l3_get_unique_id(struct qeth_card *card)
1243{
1244 int rc = 0;
1245 struct qeth_cmd_buffer *iob;
1246 struct qeth_ipa_cmd *cmd;
1247
d11ba0c4 1248 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
4a71df50
FB		 1249
1250 if (!qeth_is_supported(card, IPA_IPV6)) {
1251 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1252 UNIQUE_ID_NOT_BY_CARD;
1253 return 0;
1254 }
1255
1256 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1257 QETH_PROT_IPV6);
1aec42bc
TR		 1258 if (!iob)
1259 return -ENOMEM;
4a71df50
FB		 1260 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1261 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1262 card->info.unique_id;
1263
1264 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1265 return rc;
1266}
1267
76b11f8e
UB		 1268static int
1269qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1270 unsigned long data)
1271{
1272 struct qeth_ipa_cmd *cmd;
1273 __u16 rc;
1274
1275 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1276
1277 cmd = (struct qeth_ipa_cmd *)data;
1278 rc = cmd->hdr.return_code;
a959189a 1279 if (rc)
847a50fd 1280 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
76b11f8e
UB		 1281 switch (cmd->data.diagass.action) {
1282 case QETH_DIAGS_CMD_TRACE_QUERY:
1283 break;
1284 case QETH_DIAGS_CMD_TRACE_DISABLE:
a959189a
UB		 1285 switch (rc) {
1286 case 0:
1287 case IPA_RC_INVALID_SUBCMD:
1288 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1289 dev_info(&card->gdev->dev, "The HiperSockets network "
1290 "traffic analyzer is deactivated\n");
1291 break;
1292 default:
1293 break;
1294 }
76b11f8e
UB		 1295 break;
1296 case QETH_DIAGS_CMD_TRACE_ENABLE:
a959189a
UB		 1297 switch (rc) {
1298 case 0:
1299 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1300 dev_info(&card->gdev->dev, "The HiperSockets network "
1301 "traffic analyzer is activated\n");
1302 break;
1303 case IPA_RC_HARDWARE_AUTH_ERROR:
1304 dev_warn(&card->gdev->dev, "The device is not "
1305 "authorized to run as a HiperSockets network "
1306 "traffic analyzer\n");
1307 break;
1308 case IPA_RC_TRACE_ALREADY_ACTIVE:
1309 dev_warn(&card->gdev->dev, "A HiperSockets "
1310 "network traffic analyzer is already "
1311 "active in the HiperSockets LAN\n");
1312 break;
1313 default:
1314 break;
1315 }
76b11f8e
UB		 1316 break;
1317 default:
1318 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1319 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1320 }
1321
1322 return 0;
1323}
1324
1325static int
1326qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1327{
1328 struct qeth_cmd_buffer *iob;
1329 struct qeth_ipa_cmd *cmd;
1330
1331 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1332
1333 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1aec42bc
TR		 1334 if (!iob)
1335 return -ENOMEM;
76b11f8e
UB		 1336 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1337 cmd->data.diagass.subcmd_len = 16;
1338 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1339 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1340 cmd->data.diagass.action = diags_cmd;
1341 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1342}
1343
5f78e29c 1344static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac)
4a71df50 1345{
1abd2296 1346 ip_eth_mc_map(ipm, mac);
4a71df50
FB		 1347}
1348
5f78e29c
LD		 1349static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1350{
1351 struct qeth_ipaddr *addr;
1352 int i;
1353
1354 hash_for_each(card->ip_mc_htable, i, addr, hnode)
1355 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1356
1357}
1358
1359static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1360{
1361 struct qeth_ipaddr *addr;
1362 struct hlist_node *tmp;
1363 int i;
1364 int rc;
1365
1366 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1367 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1368 rc = qeth_l3_register_addr_entry(card, addr);
1369 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1370 addr->ref_counter = 1;
1371 else {
1372 hash_del(&addr->hnode);
1373 kfree(addr);
1374 }
1375 }
1376 }
1377
1378}
1379
1380static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1381{
1382 struct qeth_ipaddr *addr;
1383 struct hlist_node *tmp;
1384 int i;
1385 int rc;
1386
1387 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1388 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1389 rc = qeth_l3_deregister_addr_entry(card, addr);
1390 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1391 hash_del(&addr->hnode);
1392 kfree(addr);
1393 }
1394 }
1395 }
1396
1397}
1398
1399
1400static void
1401qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
4a71df50 1402{
4a71df50 1403 struct ip_mc_list *im4;
5f78e29c 1404 struct qeth_ipaddr *tmp, *ipm;
4a71df50
FB		 1405 char buf[MAX_ADDR_LEN];
1406
847a50fd 1407 QETH_CARD_TEXT(card, 4, "addmc");
5f78e29c
LD		 1408
1409 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1410 if (!tmp)
1411 return;
1412
f3aa3136
SS		 1413 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1414 im4 = rcu_dereference(im4->next_rcu)) {
5f78e29c
LD		 1415 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1416
1417 tmp->u.a4.addr = im4->multiaddr;
1418 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1419
1420 ipm = qeth_l3_ip_from_hash(card, tmp);
1421 if (ipm) {
1422 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1423 } else {
1424 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1425 if (!ipm)
1426 continue;
1427 memcpy(ipm->mac, buf, sizeof(tmp->mac));
1428 ipm->u.a4.addr = im4->multiaddr;
1429 ipm->is_multicast = 1;
1430 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1431 hash_add(card->ip_mc_htable,
1432 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1433 }
4a71df50 1434 }
5f78e29c
LD		 1435
1436 kfree(tmp);
4a71df50
FB		 1437}
1438
0347af51 1439/* called with rcu_read_lock */
4a71df50
FB		 1440static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1441{
1442 struct in_device *in_dev;
7ff0bcf6 1443 u16 vid;
4a71df50 1444
847a50fd 1445 QETH_CARD_TEXT(card, 4, "addmcvl");
5f78e29c 1446
7ff0bcf6 1447 if (!qeth_is_supported(card, IPA_FULL_VLAN))
4a71df50
FB		 1448 return;
1449
7ff0bcf6
JP		 1450 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1451 struct net_device *netdev;
1452
f06c7f9f 1453 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
91b1c1aa 1454 vid);
4a71df50
FB		 1455 if (netdev == NULL ||
1456 !(netdev->flags & IFF_UP))
1457 continue;
0347af51 1458 in_dev = __in_dev_get_rcu(netdev);
4a71df50
FB		 1459 if (!in_dev)
1460 continue;
5f78e29c 1461 qeth_l3_add_mc_to_hash(card, in_dev);
4a71df50
FB		 1462 }
1463}
1464
1465static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1466{
1467 struct in_device *in4_dev;
1468
847a50fd 1469 QETH_CARD_TEXT(card, 4, "chkmcv4");
5f78e29c 1470
f3aa3136 1471 rcu_read_lock();
0347af51
JP		 1472 in4_dev = __in_dev_get_rcu(card->dev);
1473 if (in4_dev == NULL)
1474 goto unlock;
5f78e29c 1475 qeth_l3_add_mc_to_hash(card, in4_dev);
4a71df50 1476 qeth_l3_add_vlan_mc(card);
0347af51 1477unlock:
f3aa3136 1478 rcu_read_unlock();
4a71df50
FB		 1479}
1480
1481#ifdef CONFIG_QETH_IPV6
5f78e29c
LD		 1482static void
1483qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
4a71df50
FB		 1484{
1485 struct qeth_ipaddr *ipm;
1486 struct ifmcaddr6 *im6;
5f78e29c 1487 struct qeth_ipaddr *tmp;
4a71df50
FB		 1488 char buf[MAX_ADDR_LEN];
1489
847a50fd 1490 QETH_CARD_TEXT(card, 4, "addmc6");
5f78e29c
LD		 1491
1492 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1493 if (!tmp)
1494 return;
1495
4a71df50
FB		 1496 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1497 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
5f78e29c
LD		 1498
1499 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1500 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1501 sizeof(struct in6_addr));
1502 tmp->is_multicast = 1;
1503
1504 ipm = qeth_l3_ip_from_hash(card, tmp);
1505 if (ipm) {
1506 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1507 continue;
1508 }
1509
4a71df50
FB		 1510 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1511 if (!ipm)
1512 continue;
5f78e29c 1513
4a71df50
FB		 1514 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1515 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1516 sizeof(struct in6_addr));
5f78e29c
LD		 1517 ipm->is_multicast = 1;
1518 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1519 hash_add(card->ip_mc_htable,
1520 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1521
4a71df50 1522 }
5f78e29c 1523 kfree(tmp);
4a71df50
FB		 1524}
1525
0347af51 1526/* called with rcu_read_lock */
4a71df50
FB		 1527static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1528{
1529 struct inet6_dev *in_dev;
7ff0bcf6 1530 u16 vid;
4a71df50 1531
847a50fd 1532 QETH_CARD_TEXT(card, 4, "admc6vl");
5f78e29c 1533
7ff0bcf6 1534 if (!qeth_is_supported(card, IPA_FULL_VLAN))
4a71df50
FB		 1535 return;
1536
7ff0bcf6
JP		 1537 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1538 struct net_device *netdev;
1539
f06c7f9f 1540 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
91b1c1aa 1541 vid);
4a71df50
FB		 1542 if (netdev == NULL ||
1543 !(netdev->flags & IFF_UP))
1544 continue;
1545 in_dev = in6_dev_get(netdev);
1546 if (!in_dev)
1547 continue;
1548 read_lock_bh(&in_dev->lock);
5f78e29c 1549 qeth_l3_add_mc6_to_hash(card, in_dev);
4a71df50
FB		 1550 read_unlock_bh(&in_dev->lock);
1551 in6_dev_put(in_dev);
1552 }
1553}
1554
1555static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1556{
1557 struct inet6_dev *in6_dev;
1558
847a50fd 1559 QETH_CARD_TEXT(card, 4, "chkmcv6");
5f78e29c 1560
4a71df50
FB		 1561 if (!qeth_is_supported(card, IPA_IPV6))
1562 return ;
1563 in6_dev = in6_dev_get(card->dev);
5f78e29c 1564 if (!in6_dev)
4a71df50 1565 return;
5f78e29c 1566
0347af51 1567 rcu_read_lock();
4a71df50 1568 read_lock_bh(&in6_dev->lock);
5f78e29c 1569 qeth_l3_add_mc6_to_hash(card, in6_dev);
4a71df50
FB		 1570 qeth_l3_add_vlan_mc6(card);
1571 read_unlock_bh(&in6_dev->lock);
0347af51 1572 rcu_read_unlock();
4a71df50
FB		 1573 in6_dev_put(in6_dev);
1574}
1575#endif /* CONFIG_QETH_IPV6 */
1576
1577static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1578 unsigned short vid)
1579{
1580 struct in_device *in_dev;
1581 struct in_ifaddr *ifa;
1582 struct qeth_ipaddr *addr;
7ff0bcf6 1583 struct net_device *netdev;
4a71df50 1584
847a50fd 1585 QETH_CARD_TEXT(card, 4, "frvaddr4");
4a71df50 1586
f06c7f9f 1587 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
eabfbe62 1588 if (!netdev)
1589 return;
7ff0bcf6 1590 in_dev = in_dev_get(netdev);
4a71df50
FB		 1591 if (!in_dev)
1592 return;
5f78e29c
LD		 1593
1594 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1595 if (!addr)
1596 return;
1597
1598 spin_lock_bh(&card->ip_lock);
1599
4a71df50 1600 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
5f78e29c
LD		 1601 addr->u.a4.addr = ifa->ifa_address;
1602 addr->u.a4.mask = ifa->ifa_mask;
1603 addr->type = QETH_IP_TYPE_NORMAL;
1604 qeth_l3_delete_ip(card, addr);
4a71df50 1605 }
5f78e29c
LD		 1606
1607 spin_unlock_bh(&card->ip_lock);
1608
1609 kfree(addr);
4a71df50
FB		 1610 in_dev_put(in_dev);
1611}
1612
1613static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1614 unsigned short vid)
1615{
1616#ifdef CONFIG_QETH_IPV6
1617 struct inet6_dev *in6_dev;
1618 struct inet6_ifaddr *ifa;
1619 struct qeth_ipaddr *addr;
7ff0bcf6 1620 struct net_device *netdev;
4a71df50 1621
847a50fd 1622 QETH_CARD_TEXT(card, 4, "frvaddr6");
4a71df50 1623
f06c7f9f 1624 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
eabfbe62 1625 if (!netdev)
1626 return;
5f78e29c 1627
7ff0bcf6 1628 in6_dev = in6_dev_get(netdev);
4a71df50
FB		 1629 if (!in6_dev)
1630 return;
5f78e29c
LD		 1631
1632 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1633 if (!addr)
1634 return;
1635
1636 spin_lock_bh(&card->ip_lock);
1637
70f60a22 1638 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
5f78e29c
LD		 1639 memcpy(&addr->u.a6.addr, &ifa->addr,
1640 sizeof(struct in6_addr));
1641 addr->u.a6.pfxlen = ifa->prefix_len;
1642 addr->type = QETH_IP_TYPE_NORMAL;
1643 qeth_l3_delete_ip(card, addr);
4a71df50 1644 }
5f78e29c
LD		 1645
1646 spin_unlock_bh(&card->ip_lock);
1647
1648 kfree(addr);
4a71df50
FB		 1649 in6_dev_put(in6_dev);
1650#endif /* CONFIG_QETH_IPV6 */
1651}
1652
1653static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1654 unsigned short vid)
1655{
0347af51 1656 rcu_read_lock();
4a71df50
FB		 1657 qeth_l3_free_vlan_addresses4(card, vid);
1658 qeth_l3_free_vlan_addresses6(card, vid);
0347af51 1659 rcu_read_unlock();
4a71df50
FB		 1660}
1661
80d5c368
PM		 1662static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1663 __be16 proto, u16 vid)
4a71df50 1664{
509e2562 1665 struct qeth_card *card = dev->ml_priv;
4a71df50 1666
7ff0bcf6 1667 set_bit(vid, card->active_vlans);
8e586137 1668 return 0;
4a71df50
FB		 1669}
1670
80d5c368
PM		 1671static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1672 __be16 proto, u16 vid)
4a71df50 1673{
509e2562 1674 struct qeth_card *card = dev->ml_priv;
4a71df50 1675
847a50fd 1676 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
5f78e29c 1677
8e98ac48 1678 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 1679 QETH_CARD_TEXT(card, 3, "kidREC");
8e586137 1680 return 0;
8e98ac48 1681 }
4a71df50
FB		 1682 /* unregister IP addresses of vlan device */
1683 qeth_l3_free_vlan_addresses(card, vid);
7ff0bcf6 1684 clear_bit(vid, card->active_vlans);
4a71df50 1685 qeth_l3_set_multicast_list(card->dev);
8e586137 1686 return 0;
4a71df50
FB		 1687}
1688
10651db7
UB		 1689static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1690 struct sk_buff *skb, struct qeth_hdr *hdr,
1691 unsigned short *vlan_id)
4a71df50 1692{
4a71df50
FB		 1693 __be16 prot;
1694 struct iphdr *ip_hdr;
1695 unsigned char tg_addr[MAX_ADDR_LEN];
10651db7 1696 int is_vlan = 0;
4a71df50
FB		 1697
1698 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1699 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1700 ETH_P_IP);
1701 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1702 case QETH_CAST_MULTICAST:
1703 switch (prot) {
1704#ifdef CONFIG_QETH_IPV6
1705 case __constant_htons(ETH_P_IPV6):
1706 ndisc_mc_map((struct in6_addr *)
1707 skb->data + 24,
1708 tg_addr, card->dev, 0);
1709 break;
1710#endif
1711 case __constant_htons(ETH_P_IP):
1712 ip_hdr = (struct iphdr *)skb->data;
4a71df50
FB		 1713 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1714 break;
1715 default:
1716 memcpy(tg_addr, card->dev->broadcast,
1717 card->dev->addr_len);
1718 }
1719 card->stats.multicast++;
1720 skb->pkt_type = PACKET_MULTICAST;
1721 break;
1722 case QETH_CAST_BROADCAST:
1723 memcpy(tg_addr, card->dev->broadcast,
1724 card->dev->addr_len);
1725 card->stats.multicast++;
1726 skb->pkt_type = PACKET_BROADCAST;
1727 break;
1728 case QETH_CAST_UNICAST:
1729 case QETH_CAST_ANYCAST:
1730 case QETH_CAST_NOCAST:
1731 default:
76b11f8e
UB		 1732 if (card->options.sniffer)
1733 skb->pkt_type = PACKET_OTHERHOST;
1734 else
1735 skb->pkt_type = PACKET_HOST;
4a71df50
FB		 1736 memcpy(tg_addr, card->dev->dev_addr,
1737 card->dev->addr_len);
1738 }
fe94e2e0
UB		 1739 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1740 card->dev->header_ops->create(skb, card->dev, prot,
1741 tg_addr, &hdr->hdr.l3.dest_addr[2],
1742 card->dev->addr_len);
1743 else
1744 card->dev->header_ops->create(skb, card->dev, prot,
1745 tg_addr, "FAKELL", card->dev->addr_len);
4a71df50
FB		 1746 }
1747
1abd2296 1748 skb->protocol = eth_type_trans(skb, card->dev);
4a71df50
FB		 1749
1750 if (hdr->hdr.l3.ext_flags &
1751 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
10651db7 1752 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
4a71df50 1753 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
10651db7 1754 is_vlan = 1;
4a71df50
FB		 1755 }
1756
c5e631a8 1757 if (card->dev->features & NETIF_F_RXCSUM) {
4a71df50 1758 if ((hdr->hdr.l3.ext_flags &
b9139800
UB		 1759 (QETH_HDR_EXT_CSUM_HDR_REQ |
1760 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1761 (QETH_HDR_EXT_CSUM_HDR_REQ |
1762 QETH_HDR_EXT_CSUM_TRANSP_REQ))
4a71df50
FB		 1763 skb->ip_summed = CHECKSUM_UNNECESSARY;
1764 else
b9139800 1765 skb->ip_summed = CHECKSUM_NONE;
c5e631a8
FB		 1766 } else
1767 skb->ip_summed = CHECKSUM_NONE;
10651db7 1768 return is_vlan;
4a71df50
FB		 1769}
1770
a1c3ed4c
FB		 1771static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1772 int budget, int *done)
4a71df50 1773{
a1c3ed4c 1774 int work_done = 0;
4a71df50
FB		 1775 struct sk_buff *skb;
1776 struct qeth_hdr *hdr;
4a71df50 1777 __u16 vlan_tag = 0;
10651db7 1778 int is_vlan;
4a71df50 1779 unsigned int len;
b3332930 1780 __u16 magic;
4a71df50 1781
a1c3ed4c 1782 *done = 0;
18af5c17 1783 WARN_ON_ONCE(!budget);
a1c3ed4c
FB		 1784 while (budget) {
1785 skb = qeth_core_get_next_skb(card,
b3332930 1786 &card->qdio.in_q->bufs[card->rx.b_index],
a1c3ed4c
FB		 1787 &card->rx.b_element, &card->rx.e_offset, &hdr);
1788 if (!skb) {
1789 *done = 1;
1790 break;
1791 }
1792 skb->dev = card->dev;
4a71df50
FB		 1793 switch (hdr->hdr.l3.id) {
1794 case QETH_HEADER_TYPE_LAYER3:
b3332930
FB		 1795 magic = *(__u16 *)skb->data;
1796 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1797 (magic == ETH_P_AF_IUCV)) {
1798 skb->protocol = ETH_P_AF_IUCV;
1799 skb->pkt_type = PACKET_HOST;
1800 skb->mac_header = NET_SKB_PAD;
1801 skb->dev = card->dev;
1802 len = skb->len;
1803 card->dev->header_ops->create(skb, card->dev, 0,
1804 card->dev->dev_addr, "FAKELL",
1805 card->dev->addr_len);
1806 netif_receive_skb(skb);
1807 } else {
1808 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
10651db7 1809 &vlan_tag);
b3332930
FB		 1810 len = skb->len;
1811 if (is_vlan && !card->options.sniffer)
91b1c1aa
PM		 1812 __vlan_hwaccel_put_tag(skb,
1813 htons(ETH_P_8021Q), vlan_tag);
b3332930
FB		 1814 napi_gro_receive(&card->napi, skb);
1815 }
4a71df50 1816 break;
76b11f8e
UB		 1817 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1818 skb->pkt_type = PACKET_HOST;
1819 skb->protocol = eth_type_trans(skb, skb->dev);
76b11f8e
UB		 1820 len = skb->len;
1821 netif_receive_skb(skb);
1822 break;
4a71df50
FB		 1823 default:
1824 dev_kfree_skb_any(skb);
847a50fd 1825 QETH_CARD_TEXT(card, 3, "inbunkno");
d11ba0c4 1826 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
4a71df50
FB		 1827 continue;
1828 }
a1c3ed4c
FB		 1829 work_done++;
1830 budget--;
4a71df50
FB		 1831 card->stats.rx_packets++;
1832 card->stats.rx_bytes += len;
1833 }
a1c3ed4c
FB		 1834 return work_done;
1835}
1836
1837static int qeth_l3_poll(struct napi_struct *napi, int budget)
1838{
1839 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1840 int work_done = 0;
1841 struct qeth_qdio_buffer *buffer;
1842 int done;
1843 int new_budget = budget;
1844
1845 if (card->options.performance_stats) {
1846 card->perf_stats.inbound_cnt++;
1847 card->perf_stats.inbound_start_time = qeth_get_micros();
1848 }
1849
1850 while (1) {
1851 if (!card->rx.b_count) {
1852 card->rx.qdio_err = 0;
1853 card->rx.b_count = qdio_get_next_buffers(
1854 card->data.ccwdev, 0, &card->rx.b_index,
1855 &card->rx.qdio_err);
1856 if (card->rx.b_count <= 0) {
1857 card->rx.b_count = 0;
1858 break;
1859 }
1860 card->rx.b_element =
1861 &card->qdio.in_q->bufs[card->rx.b_index]
1862 .buffer->element[0];
1863 card->rx.e_offset = 0;
1864 }
1865
1866 while (card->rx.b_count) {
1867 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1868 if (!(card->rx.qdio_err &&
1869 qeth_check_qdio_errors(card, buffer->buffer,
1870 card->rx.qdio_err, "qinerr")))
1871 work_done += qeth_l3_process_inbound_buffer(
1872 card, new_budget, &done);
1873 else
1874 done = 1;
1875
1876 if (done) {
1877 if (card->options.performance_stats)
1878 card->perf_stats.bufs_rec++;
1879 qeth_put_buffer_pool_entry(card,
1880 buffer->pool_entry);
1881 qeth_queue_input_buffer(card, card->rx.b_index);
1882 card->rx.b_count--;
1883 if (card->rx.b_count) {
1884 card->rx.b_index =
1885 (card->rx.b_index + 1) %
1886 QDIO_MAX_BUFFERS_PER_Q;
1887 card->rx.b_element =
1888 &card->qdio.in_q
1889 ->bufs[card->rx.b_index]
1890 .buffer->element[0];
1891 card->rx.e_offset = 0;
1892 }
1893 }
1894
1895 if (work_done >= budget)
1896 goto out;
1897 else
1898 new_budget = budget - work_done;
1899 }
1900 }
1901
1902 napi_complete(napi);
1903 if (qdio_start_irq(card->data.ccwdev, 0))
1904 napi_schedule(&card->napi);
1905out:
1906 if (card->options.performance_stats)
1907 card->perf_stats.inbound_time += qeth_get_micros() -
1908 card->perf_stats.inbound_start_time;
1909 return work_done;
4a71df50
FB		 1910}
1911
1912static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1913 struct qeth_card *card)
1914{
1915 int rc = 0;
7ff0bcf6 1916 u16 vid;
4a71df50 1917
7ff0bcf6
JP		 1918 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1919 struct net_device *netdev;
4a71df50 1920
7ff0bcf6 1921 rcu_read_lock();
f06c7f9f 1922 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
91b1c1aa 1923 vid);
7ff0bcf6
JP		 1924 rcu_read_unlock();
1925 if (netdev == dev) {
4a71df50
FB		 1926 rc = QETH_VLAN_CARD;
1927 break;
1928 }
1929 }
1930
509e2562 1931 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
4a71df50
FB		 1932 return 0;
1933
1934 return rc;
1935}
1936
1937static int qeth_l3_verify_dev(struct net_device *dev)
1938{
1939 struct qeth_card *card;
4a71df50 1940 int rc = 0;
5f78e29c 1941 unsigned long flags;
4a71df50
FB		 1942
1943 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1944 list_for_each_entry(card, &qeth_core_card_list.list, list) {
1945 if (card->dev == dev) {
1946 rc = QETH_REAL_CARD;
1947 break;
1948 }
1949 rc = qeth_l3_verify_vlan_dev(dev, card);
1950 if (rc)
1951 break;
1952 }
1953 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1954
1955 return rc;
1956}
1957
1958static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1959{
1960 struct qeth_card *card = NULL;
1961 int rc;
1962
1963 rc = qeth_l3_verify_dev(dev);
1964 if (rc == QETH_REAL_CARD)
509e2562 1965 card = dev->ml_priv;
4a71df50 1966 else if (rc == QETH_VLAN_CARD)
509e2562 1967 card = vlan_dev_real_dev(dev)->ml_priv;
e5bd7be5 1968 if (card && card->options.layer2)
4a71df50 1969 card = NULL;
847a50fd
CO		 1970 if (card)
1971 QETH_CARD_TEXT_(card, 4, "%d", rc);
4a71df50
FB		 1972 return card ;
1973}
1974
b2f4de8b 1975static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
4a71df50 1976{
d11ba0c4
PT		 1977 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1978 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 1979
1980 qeth_set_allowed_threads(card, 0, 1);
76b11f8e
UB		 1981 if (card->options.sniffer &&
1982 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1983 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
4a71df50
FB		 1984 if (card->read.state == CH_STATE_UP &&
1985 card->write.state == CH_STATE_UP &&
1986 (card->state == CARD_STATE_UP)) {
1987 if (recovery_mode)
1988 qeth_l3_stop(card->dev);
8af7c5ae 1989 else {
869da90b
UB		 1990 rtnl_lock();
1991 dev_close(card->dev);
1992 rtnl_unlock();
8af7c5ae 1993 }
4a71df50
FB		 1994 card->state = CARD_STATE_SOFTSETUP;
1995 }
1996 if (card->state == CARD_STATE_SOFTSETUP) {
5f78e29c 1997 qeth_l3_clear_ip_htable(card, 1);
4a71df50
FB		 1998 qeth_clear_ipacmd_list(card);
1999 card->state = CARD_STATE_HARDSETUP;
2000 }
2001 if (card->state == CARD_STATE_HARDSETUP) {
4a71df50
FB		 2002 qeth_qdio_clear_card(card, 0);
2003 qeth_clear_qdio_buffers(card);
2004 qeth_clear_working_pool_list(card);
2005 card->state = CARD_STATE_DOWN;
2006 }
2007 if (card->state == CARD_STATE_DOWN) {
2008 qeth_clear_cmd_buffers(&card->read);
2009 qeth_clear_cmd_buffers(&card->write);
2010 }
4a71df50
FB		 2011}
2012
76b11f8e
UB		 2013/*
2014 * test for and Switch promiscuous mode (on or off)
2015 * either for guestlan or HiperSocket Sniffer
2016 */
2017static void
2018qeth_l3_handle_promisc_mode(struct qeth_card *card)
2019{
2020 struct net_device *dev = card->dev;
2021
2022 if (((dev->flags & IFF_PROMISC) &&
2023 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2024 (!(dev->flags & IFF_PROMISC) &&
2025 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2026 return;
2027
2028 if (card->info.guestlan) { /* Guestlan trace */
2029 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2030 qeth_setadp_promisc_mode(card);
2031 } else if (card->options.sniffer && /* HiperSockets trace */
2032 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2033 if (dev->flags & IFF_PROMISC) {
847a50fd 2034 QETH_CARD_TEXT(card, 3, "+promisc");
76b11f8e
UB		 2035 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2036 } else {
847a50fd 2037 QETH_CARD_TEXT(card, 3, "-promisc");
76b11f8e
UB		 2038 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2039 }
2040 }
2041}
2042
4a71df50
FB		 2043static void qeth_l3_set_multicast_list(struct net_device *dev)
2044{
509e2562 2045 struct qeth_card *card = dev->ml_priv;
4a71df50 2046
847a50fd 2047 QETH_CARD_TEXT(card, 3, "setmulti");
8e98ac48
UB		 2048 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2049 (card->state != CARD_STATE_UP))
2050 return;
76b11f8e 2051 if (!card->options.sniffer) {
5f78e29c
LD		 2052
2053 spin_lock_bh(&card->mclock);
2054
2055 qeth_l3_mark_all_mc_to_be_deleted(card);
2056
76b11f8e 2057 qeth_l3_add_multicast_ipv4(card);
4a71df50 2058#ifdef CONFIG_QETH_IPV6
76b11f8e 2059 qeth_l3_add_multicast_ipv6(card);
4a71df50 2060#endif
5f78e29c
LD		 2061 qeth_l3_delete_nonused_mc(card);
2062 qeth_l3_add_all_new_mc(card);
2063
2064 spin_unlock_bh(&card->mclock);
2065
76b11f8e
UB		 2066 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2067 return;
2068 }
2069 qeth_l3_handle_promisc_mode(card);
4a71df50
FB		 2070}
2071
2072static const char *qeth_l3_arp_get_error_cause(int *rc)
2073{
2074 switch (*rc) {
2075 case QETH_IPA_ARP_RC_FAILED:
2076 *rc = -EIO;
2077 return "operation failed";
2078 case QETH_IPA_ARP_RC_NOTSUPP:
2079 *rc = -EOPNOTSUPP;
2080 return "operation not supported";
2081 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2082 *rc = -EINVAL;
2083 return "argument out of range";
2084 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2085 *rc = -EOPNOTSUPP;
2086 return "query operation not supported";
2087 case QETH_IPA_ARP_RC_Q_NO_DATA:
2088 *rc = -ENOENT;
2089 return "no query data available";
2090 default:
2091 return "unknown error";
2092 }
2093}
2094
2095static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2096{
2097 int tmp;
2098 int rc;
2099
847a50fd 2100 QETH_CARD_TEXT(card, 3, "arpstnoe");
4a71df50
FB		 2101
2102 /*
2103 * currently GuestLAN only supports the ARP assist function
2104 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2105 * thus we say EOPNOTSUPP for this ARP function
2106 */
2107 if (card->info.guestlan)
2108 return -EOPNOTSUPP;
2109 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 2110 return -EOPNOTSUPP;
2111 }
4d7def2a 2112 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
4a71df50
FB		 2113 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2114 no_entries);
2115 if (rc) {
2116 tmp = rc;
14cc21b6
FB		 2117 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2118 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
4a71df50
FB		 2119 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2120 }
2121 return rc;
2122}
2123
d0ddf30f
EL		 2124static __u32 get_arp_entry_size(struct qeth_card *card,
2125 struct qeth_arp_query_data *qdata,
2126 struct qeth_arp_entrytype *type, __u8 strip_entries)
4a71df50 2127{
d0ddf30f
EL		 2128 __u32 rc;
2129 __u8 is_hsi;
4a71df50 2130
d0ddf30f
EL		 2131 is_hsi = qdata->reply_bits == 5;
2132 if (type->ip == QETHARP_IP_ADDR_V4) {
2133 QETH_CARD_TEXT(card, 4, "arpev4");
2134 if (strip_entries) {
2135 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2136 sizeof(struct qeth_arp_qi_entry7_short);
2137 } else {
2138 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2139 sizeof(struct qeth_arp_qi_entry7);
2140 }
2141 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2142 QETH_CARD_TEXT(card, 4, "arpev6");
2143 if (strip_entries) {
2144 rc = is_hsi ?
2145 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2146 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2147 } else {
2148 rc = is_hsi ?
2149 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2150 sizeof(struct qeth_arp_qi_entry7_ipv6);
2151 }
2152 } else {
2153 QETH_CARD_TEXT(card, 4, "arpinv");
2154 rc = 0;
4a71df50 2155 }
d0ddf30f
EL		 2156
2157 return rc;
2158}
2159
2160static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2161{
2162 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2163 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
4a71df50
FB		 2164}
2165
2166static int qeth_l3_arp_query_cb(struct qeth_card *card,
2167 struct qeth_reply *reply, unsigned long data)
2168{
2169 struct qeth_ipa_cmd *cmd;
2170 struct qeth_arp_query_data *qdata;
2171 struct qeth_arp_query_info *qinfo;
4a71df50 2172 int i;
d0ddf30f
EL		 2173 int e;
2174 int entrybytes_done;
2175 int stripped_bytes;
2176 __u8 do_strip_entries;
4a71df50 2177
d0ddf30f 2178 QETH_CARD_TEXT(card, 3, "arpquecb");
4a71df50
FB		 2179
2180 qinfo = (struct qeth_arp_query_info *) reply->param;
2181 cmd = (struct qeth_ipa_cmd *) data;
d0ddf30f 2182 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
4a71df50 2183 if (cmd->hdr.return_code) {
d0ddf30f
EL		 2184 QETH_CARD_TEXT(card, 4, "arpcberr");
2185 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
4a71df50
FB		 2186 return 0;
2187 }
2188 if (cmd->data.setassparms.hdr.return_code) {
2189 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
d0ddf30f
EL		 2190 QETH_CARD_TEXT(card, 4, "setaperr");
2191 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
4a71df50
FB		 2192 return 0;
2193 }
2194 qdata = &cmd->data.setassparms.data.query_arp;
847a50fd 2195 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
4a71df50 2196
d0ddf30f
EL		 2197 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2198 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2199 entrybytes_done = 0;
2200 for (e = 0; e < qdata->no_entries; ++e) {
2201 char *cur_entry;
2202 __u32 esize;
2203 struct qeth_arp_entrytype *etype;
2204
2205 cur_entry = &qdata->data + entrybytes_done;
2206 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2207 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2208 QETH_CARD_TEXT(card, 4, "pmis");
2209 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2210 break;
2211 }
2212 esize = get_arp_entry_size(card, qdata, etype,
2213 do_strip_entries);
2214 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2215 if (!esize)
2216 break;
2217
2218 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2219 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
e0a8114c 2220 cmd->hdr.return_code = IPA_RC_ENOMEM;
d0ddf30f
EL		 2221 goto out_error;
2222 }
4a71df50 2223
d0ddf30f
EL		 2224 memcpy(qinfo->udata + qinfo->udata_offset,
2225 &qdata->data + entrybytes_done + stripped_bytes,
2226 esize);
2227 entrybytes_done += esize + stripped_bytes;
2228 qinfo->udata_offset += esize;
2229 ++qinfo->no_entries;
2230 }
4a71df50
FB		 2231 /* check if all replies received ... */
2232 if (cmd->data.setassparms.hdr.seq_no <
2233 cmd->data.setassparms.hdr.number_of_replies)
2234 return 1;
d0ddf30f 2235 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
4a71df50
FB		 2236 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2237 /* keep STRIP_ENTRIES flag so the user program can distinguish
2238 * stripped entries from normal ones */
2239 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2240 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2241 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
d0ddf30f 2242 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
4a71df50
FB		 2243 return 0;
2244out_error:
2245 i = 0;
2246 memcpy(qinfo->udata, &i, 4);
2247 return 0;
2248}
2249
2250static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2251 struct qeth_cmd_buffer *iob, int len,
2252 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2253 unsigned long),
2254 void *reply_param)
2255{
847a50fd 2256 QETH_CARD_TEXT(card, 4, "sendarp");
4a71df50
FB		 2257
2258 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2259 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2260 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2261 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2262 reply_cb, reply_param);
2263}
2264
d0ddf30f
EL		 2265static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2266 enum qeth_prot_versions prot,
2267 struct qeth_arp_query_info *qinfo)
4a71df50
FB		 2268{
2269 struct qeth_cmd_buffer *iob;
d0ddf30f 2270 struct qeth_ipa_cmd *cmd;
4a71df50
FB		 2271 int tmp;
2272 int rc;
2273
d0ddf30f
EL		 2274 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2275
b475e316
TR		 2276 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2277 IPA_CMD_ASS_ARP_QUERY_INFO,
2278 sizeof(struct qeth_arp_query_data)
2279 - sizeof(char),
2280 prot);
1aec42bc
TR		 2281 if (!iob)
2282 return -ENOMEM;
d0ddf30f
EL		 2283 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2284 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2285 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2286 cmd->data.setassparms.data.query_arp.no_entries = 0;
2287 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2288 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2289 qeth_l3_arp_query_cb, (void *)qinfo);
2290 if (rc) {
2291 tmp = rc;
2292 QETH_DBF_MESSAGE(2,
2293 "Error while querying ARP cache on %s: %s "
2294 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2295 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2296 }
2297
2298 return rc;
2299}
2300
2301static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2302{
2303 struct qeth_arp_query_info qinfo = {0, };
2304 int rc;
2305
847a50fd 2306 QETH_CARD_TEXT(card, 3, "arpquery");
4a71df50
FB		 2307
2308 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2309 IPA_ARP_PROCESSING)) {
d0ddf30f
EL		 2310 QETH_CARD_TEXT(card, 3, "arpqnsup");
2311 rc = -EOPNOTSUPP;
2312 goto out;
4a71df50
FB		 2313 }
2314 /* get size of userspace buffer and mask_bits -> 6 bytes */
d0ddf30f
EL		 2315 if (copy_from_user(&qinfo, udata, 6)) {
2316 rc = -EFAULT;
2317 goto out;
2318 }
4a71df50 2319 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
d0ddf30f
EL		 2320 if (!qinfo.udata) {
2321 rc = -ENOMEM;
2322 goto out;
2323 }
4a71df50 2324 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
d0ddf30f 2325 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
4a71df50 2326 if (rc) {
4a71df50
FB		 2327 if (copy_to_user(udata, qinfo.udata, 4))
2328 rc = -EFAULT;
77a83ed1
SO		 2329 goto free_and_out;
2330 }
d0ddf30f 2331#ifdef CONFIG_QETH_IPV6
77a83ed1
SO		 2332 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2333 /* fails in case of GuestLAN QDIO mode */
2334 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2335 }
d0ddf30f 2336#endif
77a83ed1
SO		 2337 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2338 QETH_CARD_TEXT(card, 4, "qactf");
2339 rc = -EFAULT;
2340 goto free_and_out;
4a71df50 2341 }
77a83ed1
SO		 2342 QETH_CARD_TEXT(card, 4, "qacts");
2343
d0ddf30f 2344free_and_out:
4a71df50 2345 kfree(qinfo.udata);
d0ddf30f 2346out:
4a71df50
FB		 2347 return rc;
2348}
2349
2350static int qeth_l3_arp_add_entry(struct qeth_card *card,
2351 struct qeth_arp_cache_entry *entry)
2352{
2353 struct qeth_cmd_buffer *iob;
2354 char buf[16];
2355 int tmp;
2356 int rc;
2357
847a50fd 2358 QETH_CARD_TEXT(card, 3, "arpadent");
4a71df50
FB		 2359
2360 /*
2361 * currently GuestLAN only supports the ARP assist function
2362 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2363 * thus we say EOPNOTSUPP for this ARP function
2364 */
2365 if (card->info.guestlan)
2366 return -EOPNOTSUPP;
2367 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 2368 return -EOPNOTSUPP;
2369 }
2370
b475e316 2371 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
4a71df50
FB		 2372 IPA_CMD_ASS_ARP_ADD_ENTRY,
2373 sizeof(struct qeth_arp_cache_entry),
2374 QETH_PROT_IPV4);
1aec42bc
TR		 2375 if (!iob)
2376 return -ENOMEM;
4d7def2a 2377 rc = qeth_send_setassparms(card, iob,
4a71df50
FB		 2378 sizeof(struct qeth_arp_cache_entry),
2379 (unsigned long) entry,
8f43fb00 2380 qeth_setassparms_cb, NULL);
4a71df50
FB		 2381 if (rc) {
2382 tmp = rc;
2383 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
14cc21b6
FB		 2384 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2385 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2386 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
4a71df50
FB		 2387 }
2388 return rc;
2389}
2390
2391static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2392 struct qeth_arp_cache_entry *entry)
2393{
2394 struct qeth_cmd_buffer *iob;
2395 char buf[16] = {0, };
2396 int tmp;
2397 int rc;
2398
847a50fd 2399 QETH_CARD_TEXT(card, 3, "arprment");
4a71df50
FB		 2400
2401 /*
2402 * currently GuestLAN only supports the ARP assist function
2403 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2404 * thus we say EOPNOTSUPP for this ARP function
2405 */
2406 if (card->info.guestlan)
2407 return -EOPNOTSUPP;
2408 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 2409 return -EOPNOTSUPP;
2410 }
2411 memcpy(buf, entry, 12);
b475e316 2412 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
4a71df50
FB		 2413 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2414 12,
2415 QETH_PROT_IPV4);
1aec42bc
TR		 2416 if (!iob)
2417 return -ENOMEM;
4d7def2a 2418 rc = qeth_send_setassparms(card, iob,
4a71df50 2419 12, (unsigned long)buf,
8f43fb00 2420 qeth_setassparms_cb, NULL);
4a71df50
FB		 2421 if (rc) {
2422 tmp = rc;
2423 memset(buf, 0, 16);
2424 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
14cc21b6
FB		 2425 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2426 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2427 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
4a71df50
FB		 2428 }
2429 return rc;
2430}
2431
2432static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2433{
2434 int rc;
2435 int tmp;
2436
847a50fd 2437 QETH_CARD_TEXT(card, 3, "arpflush");
4a71df50
FB		 2438
2439 /*
2440 * currently GuestLAN only supports the ARP assist function
2441 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2442 * thus we say EOPNOTSUPP for this ARP function
2443 */
2444 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2445 return -EOPNOTSUPP;
2446 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 2447 return -EOPNOTSUPP;
2448 }
4d7def2a 2449 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
4a71df50
FB		 2450 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2451 if (rc) {
2452 tmp = rc;
14cc21b6
FB		 2453 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2454 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
4a71df50
FB		 2455 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2456 }
2457 return rc;
2458}
2459
2460static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2461{
509e2562 2462 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 2463 struct qeth_arp_cache_entry arp_entry;
2464 struct mii_ioctl_data *mii_data;
2465 int rc = 0;
2466
2467 if (!card)
2468 return -ENODEV;
2469
c3521254 2470 if (!qeth_card_hw_is_reachable(card))
4a71df50
FB		 2471 return -ENODEV;
2472
2473 switch (cmd) {
2474 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2475 if (!capable(CAP_NET_ADMIN)) {
2476 rc = -EPERM;
2477 break;
2478 }
2479 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2480 break;
2481 case SIOC_QETH_ARP_QUERY_INFO:
2482 if (!capable(CAP_NET_ADMIN)) {
2483 rc = -EPERM;
2484 break;
2485 }
2486 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2487 break;
2488 case SIOC_QETH_ARP_ADD_ENTRY:
2489 if (!capable(CAP_NET_ADMIN)) {
2490 rc = -EPERM;
2491 break;
2492 }
2493 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2494 sizeof(struct qeth_arp_cache_entry)))
2495 rc = -EFAULT;
2496 else
2497 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2498 break;
2499 case SIOC_QETH_ARP_REMOVE_ENTRY:
2500 if (!capable(CAP_NET_ADMIN)) {
2501 rc = -EPERM;
2502 break;
2503 }
2504 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2505 sizeof(struct qeth_arp_cache_entry)))
2506 rc = -EFAULT;
2507 else
2508 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2509 break;
2510 case SIOC_QETH_ARP_FLUSH_CACHE:
2511 if (!capable(CAP_NET_ADMIN)) {
2512 rc = -EPERM;
2513 break;
2514 }
2515 rc = qeth_l3_arp_flush_cache(card);
2516 break;
2517 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2518 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2519 break;
2520 case SIOC_QETH_GET_CARD_TYPE:
5113fec0
UB		 2521 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2522 card->info.type == QETH_CARD_TYPE_OSX) &&
4a71df50
FB		 2523 !card->info.guestlan)
2524 return 1;
2525 return 0;
2526 break;
2527 case SIOCGMIIPHY:
2528 mii_data = if_mii(rq);
2529 mii_data->phy_id = 0;
2530 break;
2531 case SIOCGMIIREG:
2532 mii_data = if_mii(rq);
2533 if (mii_data->phy_id != 0)
2534 rc = -EINVAL;
2535 else
2536 mii_data->val_out = qeth_mdio_read(dev,
2537 mii_data->phy_id,
2538 mii_data->reg_num);
2539 break;
c3ab96f3
FB		 2540 case SIOC_QETH_QUERY_OAT:
2541 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2542 break;
4a71df50
FB		 2543 default:
2544 rc = -EOPNOTSUPP;
2545 }
2546 if (rc)
847a50fd 2547 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
4a71df50
FB		 2548 return rc;
2549}
2550
ce73e10e
KDW		 2551int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2552{
2553 int cast_type = RTN_UNSPEC;
69cce1d1
DM		 2554 struct neighbour *n = NULL;
2555 struct dst_entry *dst;
2556
1d36cb47 2557 rcu_read_lock();
69cce1d1
DM		 2558 dst = skb_dst(skb);
2559 if (dst)
24db1ba8 2560 n = dst_neigh_lookup_skb(dst, skb);
69cce1d1
DM		 2561 if (n) {
2562 cast_type = n->type;
1d36cb47 2563 rcu_read_unlock();
24db1ba8 2564 neigh_release(n);
ce73e10e
KDW		 2565 if ((cast_type == RTN_BROADCAST) ||
2566 (cast_type == RTN_MULTICAST) ||
2567 (cast_type == RTN_ANYCAST))
2568 return cast_type;
2569 else
2570 return RTN_UNSPEC;
2571 }
1d36cb47
FB		 2572 rcu_read_unlock();
2573
ce73e10e
KDW		 2574 /* try something else */
2575 if (skb->protocol == ETH_P_IPV6)
2576 return (skb_network_header(skb)[24] == 0xff) ?
2577 RTN_MULTICAST : 0;
2578 else if (skb->protocol == ETH_P_IP)
2579 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2580 RTN_MULTICAST : 0;
2581 /* ... */
2582 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2583 return RTN_BROADCAST;
2584 else {
2585 u16 hdr_mac;
2586
2587 hdr_mac = *((u16 *)skb->data);
2588 /* tr multicast? */
2589 switch (card->info.link_type) {
2590 case QETH_LINK_TYPE_HSTR:
2591 case QETH_LINK_TYPE_LANE_TR:
2592 if ((hdr_mac == QETH_TR_MAC_NC) ||
2593 (hdr_mac == QETH_TR_MAC_C))
2594 return RTN_MULTICAST;
2595 break;
2596 /* eth or so multicast? */
2597 default:
2598 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2599 (hdr_mac == QETH_ETH_MAC_V6))
2600 return RTN_MULTICAST;
2601 }
2602 }
2603 return cast_type;
2604}
2605
b3332930
FB		 2606static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2607 struct qeth_hdr *hdr, struct sk_buff *skb)
2608{
2609 char daddr[16];
2610 struct af_iucv_trans_hdr *iucv_hdr;
2611
b3332930
FB		 2612 memset(hdr, 0, sizeof(struct qeth_hdr));
2613 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2614 hdr->hdr.l3.ext_flags = 0;
acd9776b 2615 hdr->hdr.l3.length = skb->len - ETH_HLEN;
b3332930 2616 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
acd9776b
JW		 2617
2618 iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
b3332930
FB		 2619 memset(daddr, 0, sizeof(daddr));
2620 daddr[0] = 0xfe;
2621 daddr[1] = 0x80;
2622 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2623 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2624}
2625
4a71df50
FB		 2626static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2627 struct sk_buff *skb, int ipv, int cast_type)
2628{
69cce1d1
DM		 2629 struct dst_entry *dst;
2630
4a71df50
FB		 2631 memset(hdr, 0, sizeof(struct qeth_hdr));
2632 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2633 hdr->hdr.l3.ext_flags = 0;
2634
2635 /*
2636 * before we're going to overwrite this location with next hop ip.
2637 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2638 */
df8a39de 2639 if (skb_vlan_tag_present(skb)) {
213298f8
FB		 2640 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2641 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2642 else
2643 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
df8a39de 2644 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
4a71df50
FB		 2645 }
2646
2647 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
1d36cb47
FB		 2648
2649 rcu_read_lock();
69cce1d1 2650 dst = skb_dst(skb);
4a71df50 2651 if (ipv == 4) {
87e7597b
DM		 2652 struct rtable *rt = (struct rtable *) dst;
2653 __be32 *pkey = &ip_hdr(skb)->daddr;
2654
2655 if (rt->rt_gateway)
2656 pkey = &rt->rt_gateway;
2657
4a71df50
FB		 2658 /* IPv4 */
2659 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2660 memset(hdr->hdr.l3.dest_addr, 0, 12);
87e7597b 2661 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
4a71df50 2662 } else if (ipv == 6) {
87e7597b
DM		 2663 struct rt6_info *rt = (struct rt6_info *) dst;
2664 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2665
2666 if (!ipv6_addr_any(&rt->rt6i_gateway))
2667 pkey = &rt->rt6i_gateway;
2668
4a71df50
FB		 2669 /* IPv6 */
2670 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2671 if (card->info.type == QETH_CARD_TYPE_IQD)
2672 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
87e7597b 2673 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
4a71df50 2674 } else {
1abd2296 2675 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
4a71df50
FB		 2676 skb->dev->broadcast, 6)) {
2677 /* broadcast? */
2678 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2679 QETH_HDR_PASSTHRU;
2680 } else {
2681 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2682 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2683 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2684 }
2685 }
1d36cb47 2686 rcu_read_unlock();
4a71df50
FB		 2687}
2688
f6b85b6c
FB		 2689static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2690 struct qeth_hdr *hdr, struct sk_buff *skb)
2691{
2692 struct iphdr *iph = ip_hdr(skb);
2693
2694 /* tcph->check contains already the pseudo hdr checksum
2695 * so just set the header flags
2696 */
2697 if (iph->protocol == IPPROTO_UDP)
2698 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
16c0f936
FB		 2699 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2700 QETH_HDR_EXT_CSUM_HDR_REQ;
2701 iph->check = 0;
f6b85b6c
FB		 2702 if (card->options.performance_stats)
2703 card->perf_stats.tx_csum++;
2704}
2705
64ef8957
FB		 2706static void qeth_tso_fill_header(struct qeth_card *card,
2707 struct qeth_hdr *qhdr, struct sk_buff *skb)
2708{
2709 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2710 struct tcphdr *tcph = tcp_hdr(skb);
2711 struct iphdr *iph = ip_hdr(skb);
2712 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2713
2714 /*fix header to TSO values ...*/
2715 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
8fa9208e 2716 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
64ef8957
FB		 2717 /*set values which are fix for the first approach ...*/
2718 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2719 hdr->ext.imb_hdr_no = 1;
2720 hdr->ext.hdr_type = 1;
2721 hdr->ext.hdr_version = 1;
2722 hdr->ext.hdr_len = 28;
2723 /*insert non-fix values */
2724 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2725 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2726 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2727 sizeof(struct qeth_hdr_tso));
2728 tcph->check = 0;
2729 if (skb->protocol == ETH_P_IPV6) {
2730 ip6h->payload_len = 0;
2731 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2732 0, IPPROTO_TCP, 0);
2733 } else {
2734 /*OSA want us to set these values ...*/
2735 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2736 0, IPPROTO_TCP, 0);
2737 iph->tot_len = 0;
2738 iph->check = 0;
2739 }
2740}
2741
2863c613 2742/**
41aeed58
EC		 2743 * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2744 * @card: qeth card structure, to check max. elems.
2745 * @skb: SKB address
2746 * @extra_elems: extra elems needed, to check against max.
2863c613
EC		 2747 *
2748 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2749 * skb data, including linear part and fragments, but excluding TCP header.
2750 * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2751 * Checks if the result plus extra_elems fits under the limit for the card.
2752 * Returns 0 if it does not.
2753 * Note: extra_elems is not included in the returned result.
2754 */
41aeed58 2755static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2863c613 2756 struct sk_buff *skb, int extra_elems)
c3b4a740 2757{
2863c613
EC		 2758 addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2759 int elements = qeth_get_elements_for_range(
2760 tcpdptr,
2761 (addr_t)skb->data + skb_headlen(skb)) +
8f43fb00 2762 qeth_get_elements_for_frags(skb);
271648b4 2763
2863c613
EC		 2764 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2765 QETH_DBF_MESSAGE(2,
2766 "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2767 elements + extra_elems, skb->len);
2768 return 0;
2769 }
c3b4a740
FB		 2770 return elements;
2771}
2772
4a71df50
FB		 2773static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2774{
2775 int rc;
2776 u16 *tag;
2777 struct qeth_hdr *hdr = NULL;
2863c613
EC		 2778 int hdr_elements = 0;
2779 int elements;
509e2562 2780 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 2781 struct sk_buff *new_skb = NULL;
2782 int ipv = qeth_get_ip_version(skb);
ce73e10e 2783 int cast_type = qeth_l3_get_cast_type(card, skb);
290b8348
SR		 2784 struct qeth_qdio_out_q *queue =
2785 card->qdio.out_qs[card->qdio.do_prio_queueing
2786 || (cast_type && card->info.is_multicast_different) ?
2787 qeth_get_priority_queue(card, skb, ipv, cast_type) :
2788 card->qdio.default_out_queue];
4a71df50 2789 int tx_bytes = skb->len;
41aeed58 2790 bool use_tso;
683d718a 2791 int data_offset = -1;
64ef8957 2792 int nr_frags;
4a71df50 2793
b3332930
FB		 2794 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2795 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2796 ((card->options.cq == QETH_CQ_ENABLED) &&
2797 (skb->protocol != ETH_P_AF_IUCV)))) ||
2798 card->options.sniffer)
4a71df50
FB		 2799 goto tx_drop;
2800
2801 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2802 card->stats.tx_carrier_errors++;
2803 goto tx_drop;
2804 }
2805
2806 if ((cast_type == RTN_BROADCAST) &&
2807 (card->info.broadcast_capable == 0))
2808 goto tx_drop;
2809
2810 if (card->options.performance_stats) {
2811 card->perf_stats.outbound_cnt++;
2812 card->perf_stats.outbound_start_time = qeth_get_micros();
2813 }
2814
41aeed58
EC		 2815 /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2816 use_tso = skb_is_gso(skb) &&
2817 (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
683d718a 2818
41aeed58
EC		 2819 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2820 !skb_is_nonlinear(skb)) {
683d718a 2821 new_skb = skb;
acd9776b 2822 data_offset = ETH_HLEN;
683d718a
FB		 2823 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2824 if (!hdr)
2825 goto tx_drop;
2863c613 2826 hdr_elements++;
683d718a
FB		 2827 } else {
2828 /* create a clone with writeable headroom */
2829 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2830 + VLAN_HLEN);
2831 if (!new_skb)
2832 goto tx_drop;
2833 }
4a71df50
FB		 2834
2835 if (card->info.type == QETH_CARD_TYPE_IQD) {
683d718a
FB		 2836 if (data_offset < 0)
2837 skb_pull(new_skb, ETH_HLEN);
4a71df50 2838 } else {
21fde749 2839 if (ipv == 4) {
1abd2296 2840 skb_pull(new_skb, ETH_HLEN);
4a71df50
FB		 2841 }
2842
df8a39de 2843 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
4a71df50
FB		 2844 skb_push(new_skb, VLAN_HLEN);
2845 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2846 skb_copy_to_linear_data_offset(new_skb, 4,
2847 new_skb->data + 8, 4);
2848 skb_copy_to_linear_data_offset(new_skb, 8,
2849 new_skb->data + 12, 4);
2850 tag = (u16 *)(new_skb->data + 12);
2851 *tag = __constant_htons(ETH_P_8021Q);
df8a39de 2852 *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
4a71df50
FB		 2853 }
2854 }
2855
2856 netif_stop_queue(dev);
2857
4a71df50 2858 /* fix hardware limitation: as long as we do not have sbal
64ef8957 2859 * chaining we can not send long frag lists
4a71df50 2860 */
41aeed58
EC		 2861 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2862 ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
7d969d2e 2863 (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
6059c905
EC		 2864 int lin_rc = skb_linearize(new_skb);
2865
2866 if (card->options.performance_stats) {
2867 if (lin_rc)
2868 card->perf_stats.tx_linfail++;
2869 else
2870 card->perf_stats.tx_lin++;
2871 }
2872 if (lin_rc)
41aeed58 2873 goto tx_drop;
64ef8957 2874 }
4a71df50 2875
41aeed58 2876 if (use_tso) {
4a71df50
FB		 2877 hdr = (struct qeth_hdr *)skb_push(new_skb,
2878 sizeof(struct qeth_hdr_tso));
2879 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2880 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2881 qeth_tso_fill_header(card, hdr, new_skb);
2863c613 2882 hdr_elements++;
4a71df50 2883 } else {
683d718a
FB		 2884 if (data_offset < 0) {
2885 hdr = (struct qeth_hdr *)skb_push(new_skb,
4a71df50 2886 sizeof(struct qeth_hdr));
683d718a
FB		 2887 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2888 cast_type);
2889 } else {
b3332930
FB		 2890 if (new_skb->protocol == ETH_P_AF_IUCV)
2891 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2892 else {
2893 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2894 cast_type);
2895 hdr->hdr.l3.length = new_skb->len - data_offset;
2896 }
683d718a 2897 }
f6b85b6c
FB		 2898
2899 if (skb->ip_summed == CHECKSUM_PARTIAL)
2900 qeth_l3_hdr_csum(card, hdr, new_skb);
4a71df50
FB		 2901 }
2902
41aeed58
EC		 2903 elements = use_tso ?
2904 qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
7d969d2e
JW		 2905 qeth_get_elements_no(card, new_skb, hdr_elements,
2906 (data_offset > 0) ? data_offset : 0);
2863c613 2907 if (!elements) {
64ef8957
FB		 2908 if (data_offset >= 0)
2909 kmem_cache_free(qeth_core_header_cache, hdr);
2910 goto tx_drop;
f61a0d05 2911 }
2863c613 2912 elements += hdr_elements;
4a71df50 2913
51aa165c
FB		 2914 if (card->info.type != QETH_CARD_TYPE_IQD) {
2915 int len;
41aeed58 2916 if (use_tso)
51aa165c 2917 len = ((unsigned long)tcp_hdr(new_skb) +
2863c613 2918 tcp_hdrlen(new_skb)) -
51aa165c
FB		 2919 (unsigned long)new_skb->data;
2920 else
2921 len = sizeof(struct qeth_hdr_layer3);
2922
d4ae1f5e 2923 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
51aa165c 2924 goto tx_drop;
2863c613 2925 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
51aa165c 2926 } else
4a71df50 2927 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2863c613 2928 elements, data_offset, 0);
4a71df50
FB		 2929
2930 if (!rc) {
2931 card->stats.tx_packets++;
2932 card->stats.tx_bytes += tx_bytes;
2933 if (new_skb != skb)
2934 dev_kfree_skb_any(skb);
2935 if (card->options.performance_stats) {
2863c613 2936 nr_frags = skb_shinfo(new_skb)->nr_frags;
41aeed58 2937 if (use_tso) {
4a71df50
FB		 2938 card->perf_stats.large_send_bytes += tx_bytes;
2939 card->perf_stats.large_send_cnt++;
2940 }
64ef8957 2941 if (nr_frags) {
4a71df50
FB		 2942 card->perf_stats.sg_skbs_sent++;
2943 /* nr_frags + skb->data */
64ef8957 2944 card->perf_stats.sg_frags_sent += nr_frags + 1;
4a71df50
FB		 2945 }
2946 }
ec634fe3 2947 rc = NETDEV_TX_OK;
4a71df50 2948 } else {
683d718a
FB		 2949 if (data_offset >= 0)
2950 kmem_cache_free(qeth_core_header_cache, hdr);
2951
4a71df50
FB		 2952 if (rc == -EBUSY) {
2953 if (new_skb != skb)
2954 dev_kfree_skb_any(new_skb);
2955 return NETDEV_TX_BUSY;
2956 } else
2957 goto tx_drop;
2958 }
2959
2960 netif_wake_queue(dev);
2961 if (card->options.performance_stats)
2962 card->perf_stats.outbound_time += qeth_get_micros() -
2963 card->perf_stats.outbound_start_time;
2964 return rc;
2965
2966tx_drop:
2967 card->stats.tx_dropped++;
2968 card->stats.tx_errors++;
2969 if ((new_skb != skb) && new_skb)
2970 dev_kfree_skb_any(new_skb);
2971 dev_kfree_skb_any(skb);
d0ec0f54 2972 netif_wake_queue(dev);
4a71df50
FB		 2973 return NETDEV_TX_OK;
2974}
2975
39423440 2976static int __qeth_l3_open(struct net_device *dev)
4a71df50 2977{
509e2562 2978 struct qeth_card *card = dev->ml_priv;
a1c3ed4c 2979 int rc = 0;
4a71df50 2980
847a50fd 2981 QETH_CARD_TEXT(card, 4, "qethopen");
39423440
UB		 2982 if (card->state == CARD_STATE_UP)
2983 return rc;
4a71df50
FB		 2984 if (card->state != CARD_STATE_SOFTSETUP)
2985 return -ENODEV;
2986 card->data.state = CH_STATE_UP;
2987 card->state = CARD_STATE_UP;
4a71df50
FB		 2988 netif_start_queue(dev);
2989
a1c3ed4c
FB		 2990 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2991 napi_enable(&card->napi);
2992 napi_schedule(&card->napi);
2993 } else
2994 rc = -EIO;
2995 return rc;
4a71df50
FB		 2996}
2997
39423440
UB		 2998static int qeth_l3_open(struct net_device *dev)
2999{
3000 struct qeth_card *card = dev->ml_priv;
3001
3002 QETH_CARD_TEXT(card, 5, "qethope_");
3003 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3004 QETH_CARD_TEXT(card, 3, "openREC");
3005 return -ERESTARTSYS;
3006 }
3007 return __qeth_l3_open(dev);
3008}
3009
4a71df50
FB		 3010static int qeth_l3_stop(struct net_device *dev)
3011{
509e2562 3012 struct qeth_card *card = dev->ml_priv;
4a71df50 3013
847a50fd 3014 QETH_CARD_TEXT(card, 4, "qethstop");
4a71df50 3015 netif_tx_disable(dev);
a1c3ed4c 3016 if (card->state == CARD_STATE_UP) {
4a71df50 3017 card->state = CARD_STATE_SOFTSETUP;
a1c3ed4c
FB		 3018 napi_disable(&card->napi);
3019 }
4a71df50
FB		 3020 return 0;
3021}
3022
0fc0b732 3023static const struct ethtool_ops qeth_l3_ethtool_ops = {
4a71df50 3024 .get_link = ethtool_op_get_link,
4a71df50
FB		 3025 .get_strings = qeth_core_get_strings,
3026 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 3027 .get_sset_count = qeth_core_get_sset_count,
4a71df50 3028 .get_drvinfo = qeth_core_get_drvinfo,
3f9975aa 3029 .get_settings = qeth_core_ethtool_get_settings,
4a71df50
FB		 3030};
3031
3032/*
3033 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3034 * NOARP on the netdevice is no option because it also turns off neighbor
3035 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3036 * arp resolution but we want the hard header (packet socket will work
3037 * e.g. tcpdump)
3038 */
3039static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3040{
3041 n->nud_state = NUD_NOARP;
3042 memcpy(n->ha, "FAKELL", 6);
3043 n->output = n->ops->connected_output;
3044 return 0;
3045}
3046
3047static int
3048qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3049{
3050 if (np->tbl->family == AF_INET)
3051 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3052
3053 return 0;
3054}
3055
3d58cefd 3056static const struct net_device_ops qeth_l3_netdev_ops = {
8403b13c
FB		 3057 .ndo_open = qeth_l3_open,
3058 .ndo_stop = qeth_l3_stop,
3059 .ndo_get_stats = qeth_get_stats,
3060 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3061 .ndo_validate_addr = eth_validate_addr,
afc4b13d 3062 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
7ff0bcf6
JP		 3063 .ndo_do_ioctl = qeth_l3_do_ioctl,
3064 .ndo_change_mtu = qeth_change_mtu,
8f43fb00
TR		 3065 .ndo_fix_features = qeth_fix_features,
3066 .ndo_set_features = qeth_set_features,
8403b13c
FB		 3067 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3068 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
7ff0bcf6 3069 .ndo_tx_timeout = qeth_tx_timeout,
8403b13c
FB		 3070};
3071
3d58cefd
FB		 3072static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3073 .ndo_open = qeth_l3_open,
3074 .ndo_stop = qeth_l3_stop,
3075 .ndo_get_stats = qeth_get_stats,
3076 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3077 .ndo_validate_addr = eth_validate_addr,
afc4b13d 3078 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
7ff0bcf6
JP		 3079 .ndo_do_ioctl = qeth_l3_do_ioctl,
3080 .ndo_change_mtu = qeth_change_mtu,
8f43fb00
TR		 3081 .ndo_fix_features = qeth_fix_features,
3082 .ndo_set_features = qeth_set_features,
3d58cefd
FB		 3083 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3084 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
7ff0bcf6 3085 .ndo_tx_timeout = qeth_tx_timeout,
3d58cefd
FB		 3086 .ndo_neigh_setup = qeth_l3_neigh_setup,
3087};
3088
4a71df50
FB		 3089static int qeth_l3_setup_netdev(struct qeth_card *card)
3090{
1aec42bc
TR		 3091 int rc;
3092
5113fec0
UB		 3093 if (card->info.type == QETH_CARD_TYPE_OSD ||
3094 card->info.type == QETH_CARD_TYPE_OSX) {
4a71df50
FB		 3095 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3096 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
1abd2296
PG		 3097 pr_info("qeth_l3: ignoring TR device\n");
3098 return -ENODEV;
4a71df50
FB		 3099 } else {
3100 card->dev = alloc_etherdev(0);
3101 if (!card->dev)
3102 return -ENODEV;
3d58cefd 3103 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
4a71df50
FB		 3104
3105 /*IPv6 address autoconfiguration stuff*/
3106 qeth_l3_get_unique_id(card);
3107 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3108 card->dev->dev_id = card->info.unique_id &
3109 0xffff;
c5e631a8
FB		 3110 if (!card->info.guestlan) {
3111 card->dev->hw_features = NETIF_F_SG |
3112 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3113 NETIF_F_TSO;
9bdc4411
HW		 3114 card->dev->vlan_features = NETIF_F_SG |
3115 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3116 NETIF_F_TSO;
c5e631a8 3117 }
4a71df50
FB		 3118 }
3119 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
c835a677
TG		 3120 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3121 ether_setup);
4a71df50
FB		 3122 if (!card->dev)
3123 return -ENODEV;
3124 card->dev->flags |= IFF_NOARP;
3d58cefd 3125 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1aec42bc
TR		 3126 rc = qeth_l3_iqd_read_initial_mac(card);
3127 if (rc)
3128 return rc;
b3332930
FB		 3129 if (card->options.hsuid[0])
3130 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
4a71df50
FB		 3131 } else
3132 return -ENODEV;
3133
509e2562 3134 card->dev->ml_priv = card;
4a71df50 3135 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
4a71df50 3136 card->dev->mtu = card->info.initial_mtu;
46b3ef4c
JW		 3137 card->dev->min_mtu = 64;
3138 card->dev->max_mtu = ETH_MAX_MTU;
7ad24ea4 3139 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
f646968f
PM		 3140 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
3141 NETIF_F_HW_VLAN_CTAG_RX |
3142 NETIF_F_HW_VLAN_CTAG_FILTER;
02875878 3143 netif_keep_dst(card->dev);
8bad55f8
EC		 3144 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
3145 PAGE_SIZE;
4a71df50
FB		 3146
3147 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
a1c3ed4c 3148 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
e5ebe632 3149 netif_carrier_off(card->dev);
4a71df50
FB		 3150 return register_netdev(card->dev);
3151}
3152
4a71df50
FB		 3153static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3154{
3155 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3156
3157 qeth_l3_create_device_attributes(&gdev->dev);
3158 card->options.layer2 = 0;
1da74b1c 3159 card->info.hwtrap = 0;
4a71df50
FB		 3160 return 0;
3161}
3162
3163static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3164{
3165 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3166
9dc48ccc
UB		 3167 qeth_l3_remove_device_attributes(&cgdev->dev);
3168
f2148565 3169 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 3170 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3171
70919e23 3172 if (cgdev->state == CCWGROUP_ONLINE)
4a71df50 3173 qeth_l3_set_offline(cgdev);
4a71df50
FB		 3174
3175 if (card->dev) {
7831b4ff 3176 netif_napi_del(&card->napi);
4a71df50
FB		 3177 unregister_netdev(card->dev);
3178 card->dev = NULL;
3179 }
3180
5f78e29c 3181 qeth_l3_clear_ip_htable(card, 0);
4a71df50
FB		 3182 qeth_l3_clear_ipato_list(card);
3183 return;
3184}
3185
3186static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3187{
3188 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3189 int rc = 0;
3190 enum qeth_card_states recover_flag;
3191
9dc48ccc 3192 mutex_lock(&card->discipline_mutex);
c4949f07 3193 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 3194 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3195 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 3196
4a71df50 3197 recover_flag = card->state;
4a71df50
FB		 3198 rc = qeth_core_hardsetup_card(card);
3199 if (rc) {
1aec42bc 3200 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
aa909224 3201 rc = -ENODEV;
4a71df50
FB		 3202 goto out_remove;
3203 }
3204
aa909224
UB		 3205 if (!card->dev && qeth_l3_setup_netdev(card)) {
3206 rc = -ENODEV;
4a71df50 3207 goto out_remove;
aa909224 3208 }
4a71df50 3209
1da74b1c
FB		 3210 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3211 if (card->info.hwtrap &&
3212 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3213 card->info.hwtrap = 0;
3214 } else
3215 card->info.hwtrap = 0;
3216
4a71df50 3217 card->state = CARD_STATE_HARDSETUP;
a1c3ed4c 3218 memset(&card->rx, 0, sizeof(struct qeth_rx));
4a71df50
FB		 3219 qeth_print_status_message(card);
3220
3221 /* softsetup */
d11ba0c4 3222 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50 3223
4a71df50
FB		 3224 rc = qeth_l3_setadapter_parms(card);
3225 if (rc)
1aec42bc 3226 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
76b11f8e
UB		 3227 if (!card->options.sniffer) {
3228 rc = qeth_l3_start_ipassists(card);
0f54761d 3229 if (rc) {
76b11f8e 3230 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
0f54761d
SR		 3231 goto out_remove;
3232 }
76b11f8e
UB		 3233 rc = qeth_l3_setrouting_v4(card);
3234 if (rc)
1aec42bc 3235 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
76b11f8e
UB		 3236 rc = qeth_l3_setrouting_v6(card);
3237 if (rc)
1aec42bc 3238 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
76b11f8e 3239 }
4a71df50
FB		 3240 netif_tx_disable(card->dev);
3241
3242 rc = qeth_init_qdio_queues(card);
3243 if (rc) {
d11ba0c4 3244 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 3245 rc = -ENODEV;
4a71df50
FB		 3246 goto out_remove;
3247 }
3248 card->state = CARD_STATE_SOFTSETUP;
4a71df50
FB		 3249
3250 qeth_set_allowed_threads(card, 0xffffffff, 0);
5f78e29c 3251 qeth_l3_recover_ip(card);
2b6203bb
UB		 3252 if (card->lan_online)
3253 netif_carrier_on(card->dev);
3254 else
3255 netif_carrier_off(card->dev);
8af7c5ae 3256 if (recover_flag == CARD_STATE_RECOVER) {
4763b0a0 3257 rtnl_lock();
8af7c5ae 3258 if (recovery_mode)
39423440 3259 __qeth_l3_open(card->dev);
4763b0a0 3260 else
8af7c5ae 3261 dev_open(card->dev);
8af7c5ae 3262 qeth_l3_set_multicast_list(card->dev);
e830baa9 3263 qeth_recover_features(card->dev);
4763b0a0 3264 rtnl_unlock();
4a71df50 3265 }
82f77cf9 3266 qeth_trace_features(card);
4a71df50
FB		 3267 /* let user_space know that device is online */
3268 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
c4949f07 3269 mutex_unlock(&card->conf_mutex);
9dc48ccc 3270 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 3271 return 0;
3272out_remove:
4a71df50
FB		 3273 qeth_l3_stop_card(card, 0);
3274 ccw_device_set_offline(CARD_DDEV(card));
3275 ccw_device_set_offline(CARD_WDEV(card));
3276 ccw_device_set_offline(CARD_RDEV(card));
22ae2790 3277 qdio_free(CARD_DDEV(card));
4a71df50
FB		 3278 if (recover_flag == CARD_STATE_RECOVER)
3279 card->state = CARD_STATE_RECOVER;
3280 else
3281 card->state = CARD_STATE_DOWN;
c4949f07 3282 mutex_unlock(&card->conf_mutex);
9dc48ccc 3283 mutex_unlock(&card->discipline_mutex);
aa909224 3284 return rc;
4a71df50
FB		 3285}
3286
3287static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3288{
3289 return __qeth_l3_set_online(gdev, 0);
3290}
3291
3292static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3293 int recovery_mode)
3294{
3295 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3296 int rc = 0, rc2 = 0, rc3 = 0;
3297 enum qeth_card_states recover_flag;
3298
9dc48ccc 3299 mutex_lock(&card->discipline_mutex);
c4949f07 3300 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 3301 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3302 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50
FB		 3303
3304 if (card->dev && netif_carrier_ok(card->dev))
3305 netif_carrier_off(card->dev);
3306 recover_flag = card->state;
1da74b1c
FB		 3307 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3308 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3309 card->info.hwtrap = 1;
3310 }
0f5623c9 3311 qeth_l3_stop_card(card, recovery_mode);
72861ae7
EL		 3312 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3313 rtnl_lock();
3314 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3315 rtnl_unlock();
3316 }
4a71df50
FB		 3317 rc = ccw_device_set_offline(CARD_DDEV(card));
3318 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3319 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3320 if (!rc)
3321 rc = (rc2) ? rc2 : rc3;
3322 if (rc)
d11ba0c4 3323 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
22ae2790 3324 qdio_free(CARD_DDEV(card));
4a71df50
FB		 3325 if (recover_flag == CARD_STATE_UP)
3326 card->state = CARD_STATE_RECOVER;
3327 /* let user_space know that device is offline */
3328 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
c4949f07 3329 mutex_unlock(&card->conf_mutex);
9dc48ccc 3330 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 3331 return 0;
3332}
3333
3334static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3335{
3336 return __qeth_l3_set_offline(cgdev, 0);
3337}
3338
3339static int qeth_l3_recover(void *ptr)
3340{
3341 struct qeth_card *card;
3342 int rc = 0;
3343
3344 card = (struct qeth_card *) ptr;
847a50fd
CO		 3345 QETH_CARD_TEXT(card, 2, "recover1");
3346 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
4a71df50
FB		 3347 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3348 return 0;
847a50fd 3349 QETH_CARD_TEXT(card, 2, "recover2");
74eacdb9
FB		 3350 dev_warn(&card->gdev->dev,
3351 "A recovery process has been started for the device\n");
65d8013c 3352 qeth_set_recovery_task(card);
4a71df50
FB		 3353 __qeth_l3_set_offline(card->gdev, 1);
3354 rc = __qeth_l3_set_online(card->gdev, 1);
4a71df50 3355 if (!rc)
74eacdb9
FB		 3356 dev_info(&card->gdev->dev,
3357 "Device successfully recovered!\n");
28a7e4c9 3358 else {
0f54761d
SR		 3359 qeth_close_dev(card);
3360 dev_warn(&card->gdev->dev, "The qeth device driver "
2efaf5ff 3361 "failed to recover an error on the device\n");
28a7e4c9 3362 }
65d8013c 3363 qeth_clear_recovery_task(card);
a1c3ed4c
FB		 3364 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3365 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
4a71df50
FB		 3366 return 0;
3367}
3368
3369static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3370{
3371 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
f78ac2bb 3372 qeth_set_allowed_threads(card, 0, 1);
1da74b1c
FB		 3373 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3374 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
4a71df50
FB		 3375 qeth_qdio_clear_card(card, 0);
3376 qeth_clear_qdio_buffers(card);
22ae2790 3377 qdio_free(CARD_DDEV(card));
4a71df50
FB		 3378}
3379
bbcfcdc8
FB		 3380static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3381{
3382 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3383
3384 if (card->dev)
3385 netif_device_detach(card->dev);
3386 qeth_set_allowed_threads(card, 0, 1);
3387 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3388 if (gdev->state == CCWGROUP_OFFLINE)
3389 return 0;
3390 if (card->state == CARD_STATE_UP) {
1da74b1c
FB		 3391 if (card->info.hwtrap)
3392 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
bbcfcdc8
FB		 3393 __qeth_l3_set_offline(card->gdev, 1);
3394 } else
3395 __qeth_l3_set_offline(card->gdev, 0);
3396 return 0;
3397}
3398
3399static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3400{
3401 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3402 int rc = 0;
3403
3404 if (gdev->state == CCWGROUP_OFFLINE)
3405 goto out;
3406
3407 if (card->state == CARD_STATE_RECOVER) {
3408 rc = __qeth_l3_set_online(card->gdev, 1);
3409 if (rc) {
869da90b
UB		 3410 rtnl_lock();
3411 dev_close(card->dev);
3412 rtnl_unlock();
bbcfcdc8
FB		 3413 }
3414 } else
3415 rc = __qeth_l3_set_online(card->gdev, 0);
3416out:
3417 qeth_set_allowed_threads(card, 0xffffffff, 0);
3418 if (card->dev)
3419 netif_device_attach(card->dev);
3420 if (rc)
3421 dev_warn(&card->gdev->dev, "The qeth device driver "
3422 "failed to recover an error on the device\n");
3423 return rc;
3424}
3425
c044dc21
EC		 3426/* Returns zero if the command is successfully "consumed" */
3427static int qeth_l3_control_event(struct qeth_card *card,
3428 struct qeth_ipa_cmd *cmd)
3429{
3430 return 1;
3431}
3432
c041f2d4
SO		 3433struct qeth_discipline qeth_l3_discipline = {
3434 .start_poll = qeth_qdio_start_poll,
3435 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3436 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3437 .recover = qeth_l3_recover,
3438 .setup = qeth_l3_probe_device,
4a71df50
FB		 3439 .remove = qeth_l3_remove_device,
3440 .set_online = qeth_l3_set_online,
3441 .set_offline = qeth_l3_set_offline,
3442 .shutdown = qeth_l3_shutdown,
bbcfcdc8
FB		 3443 .freeze = qeth_l3_pm_suspend,
3444 .thaw = qeth_l3_pm_resume,
3445 .restore = qeth_l3_pm_resume,
c044dc21 3446 .control_event_handler = qeth_l3_control_event,
4a71df50 3447};
c041f2d4 3448EXPORT_SYMBOL_GPL(qeth_l3_discipline);
4a71df50
FB		 3449
3450static int qeth_l3_ip_event(struct notifier_block *this,
76fef2b6 3451 unsigned long event, void *ptr)
4a71df50 3452{
5f78e29c 3453
4a71df50
FB		 3454 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3455 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3456 struct qeth_ipaddr *addr;
3457 struct qeth_card *card;
3458
c346dca1 3459 if (dev_net(dev) != &init_net)
76fef2b6
DM		 3460 return NOTIFY_DONE;
3461
4a71df50
FB		 3462 card = qeth_l3_get_card_from_dev(dev);
3463 if (!card)
3464 return NOTIFY_DONE;
6d8823db 3465 QETH_CARD_TEXT(card, 3, "ipevent");
4a71df50
FB		 3466
3467 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
5f78e29c 3468 if (addr) {
4a71df50
FB		 3469 addr->u.a4.addr = ifa->ifa_address;
3470 addr->u.a4.mask = ifa->ifa_mask;
3471 addr->type = QETH_IP_TYPE_NORMAL;
3472 } else
5f78e29c 3473 return NOTIFY_DONE;
4a71df50
FB		 3474
3475 switch (event) {
3476 case NETDEV_UP:
5f78e29c
LD		 3477 spin_lock_bh(&card->ip_lock);
3478 qeth_l3_add_ip(card, addr);
3479 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 3480 break;
3481 case NETDEV_DOWN:
5f78e29c
LD		 3482 spin_lock_bh(&card->ip_lock);
3483 qeth_l3_delete_ip(card, addr);
3484 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 3485 break;
3486 }
5f78e29c
LD		 3487
3488 kfree(addr);
4a71df50
FB		 3489 return NOTIFY_DONE;
3490}
3491
3492static struct notifier_block qeth_l3_ip_notifier = {
3493 qeth_l3_ip_event,
3494 NULL,
3495};
3496
3497#ifdef CONFIG_QETH_IPV6
3498/**
3499 * IPv6 event handler
3500 */
3501static int qeth_l3_ip6_event(struct notifier_block *this,
76fef2b6 3502 unsigned long event, void *ptr)
4a71df50
FB		 3503{
3504 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3505 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3506 struct qeth_ipaddr *addr;
3507 struct qeth_card *card;
3508
4a71df50
FB		 3509 card = qeth_l3_get_card_from_dev(dev);
3510 if (!card)
3511 return NOTIFY_DONE;
847a50fd 3512 QETH_CARD_TEXT(card, 3, "ip6event");
4a71df50
FB		 3513 if (!qeth_is_supported(card, IPA_IPV6))
3514 return NOTIFY_DONE;
3515
3516 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
5f78e29c 3517 if (addr) {
4a71df50
FB		 3518 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3519 addr->u.a6.pfxlen = ifa->prefix_len;
3520 addr->type = QETH_IP_TYPE_NORMAL;
3521 } else
5f78e29c 3522 return NOTIFY_DONE;
4a71df50
FB		 3523
3524 switch (event) {
3525 case NETDEV_UP:
5f78e29c
LD		 3526 spin_lock_bh(&card->ip_lock);
3527 qeth_l3_add_ip(card, addr);
3528 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 3529 break;
3530 case NETDEV_DOWN:
5f78e29c
LD		 3531 spin_lock_bh(&card->ip_lock);
3532 qeth_l3_delete_ip(card, addr);
3533 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 3534 break;
3535 }
5f78e29c
LD		 3536
3537 kfree(addr);
4a71df50
FB		 3538 return NOTIFY_DONE;
3539}
3540
3541static struct notifier_block qeth_l3_ip6_notifier = {
3542 qeth_l3_ip6_event,
3543 NULL,
3544};
3545#endif
3546
3547static int qeth_l3_register_notifiers(void)
3548{
3549 int rc;
3550
847a50fd 3551 QETH_DBF_TEXT(SETUP, 5, "regnotif");
4a71df50
FB		 3552 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3553 if (rc)
3554 return rc;
3555#ifdef CONFIG_QETH_IPV6
3556 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3557 if (rc) {
3558 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3559 return rc;
3560 }
3561#else
baebc70a 3562 pr_warn("There is no IPv6 support for the layer 3 discipline\n");
4a71df50
FB		 3563#endif
3564 return 0;
3565}
3566
3567static void qeth_l3_unregister_notifiers(void)
3568{
3569
847a50fd 3570 QETH_DBF_TEXT(SETUP, 5, "unregnot");
18af5c17 3571 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
4a71df50 3572#ifdef CONFIG_QETH_IPV6
18af5c17 3573 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
4a71df50
FB		 3574#endif /* QETH_IPV6 */
3575}
3576
3577static int __init qeth_l3_init(void)
3578{
3579 int rc = 0;
3580
74eacdb9 3581 pr_info("register layer 3 discipline\n");
4a71df50
FB		 3582 rc = qeth_l3_register_notifiers();
3583 return rc;
3584}
3585
3586static void __exit qeth_l3_exit(void)
3587{
3588 qeth_l3_unregister_notifiers();
74eacdb9 3589 pr_info("unregister layer 3 discipline\n");
4a71df50
FB		 3590}
3591
3592module_init(qeth_l3_init);
3593module_exit(qeth_l3_exit);
3594MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3595MODULE_DESCRIPTION("qeth layer 3 discipline");
3596MODULE_LICENSE("GPL");
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