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e1000e: reformat register test code, fix some minor initialization
[deliverable/linux.git] / drivers / s390 / net / qeth_l3_main.c
CommitLineData
4a71df50
FB		 1/*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11#include <linux/module.h>
12#include <linux/moduleparam.h>
13#include <linux/string.h>
14#include <linux/errno.h>
15#include <linux/kernel.h>
16#include <linux/etherdevice.h>
17#include <linux/mii.h>
18#include <linux/ip.h>
19#include <linux/reboot.h>
20#include <linux/inetdevice.h>
21#include <linux/igmp.h>
22
23#include <net/ip.h>
24#include <net/arp.h>
25
26#include <asm/s390_rdev.h>
27
28#include "qeth_l3.h"
29#include "qeth_core_offl.h"
30
31DEFINE_PER_CPU(char[256], qeth_l3_dbf_txt_buf);
32
33static int qeth_l3_set_offline(struct ccwgroup_device *);
34static int qeth_l3_recover(void *);
35static int qeth_l3_stop(struct net_device *);
36static void qeth_l3_set_multicast_list(struct net_device *);
37static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
38static int qeth_l3_register_addr_entry(struct qeth_card *,
39 struct qeth_ipaddr *);
40static int qeth_l3_deregister_addr_entry(struct qeth_card *,
41 struct qeth_ipaddr *);
42static int __qeth_l3_set_online(struct ccwgroup_device *, int);
43static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
44
45
46static int qeth_l3_isxdigit(char *buf)
47{
48 while (*buf) {
49 if (!isxdigit(*buf++))
50 return 0;
51 }
52 return 1;
53}
54
55void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
56{
57 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
58}
59
60int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
61{
62 int count = 0, rc = 0;
63 int in[4];
64 char c;
65
66 rc = sscanf(buf, "%u.%u.%u.%u%c",
67 &in[0], &in[1], &in[2], &in[3], &c);
68 if (rc != 4 && (rc != 5 || c != '\n'))
69 return -EINVAL;
70 for (count = 0; count < 4; count++) {
71 if (in[count] > 255)
72 return -EINVAL;
73 addr[count] = in[count];
74 }
75 return 0;
76}
77
78void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
79{
80 sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
81 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
82 addr[0], addr[1], addr[2], addr[3],
83 addr[4], addr[5], addr[6], addr[7],
84 addr[8], addr[9], addr[10], addr[11],
85 addr[12], addr[13], addr[14], addr[15]);
86}
87
88int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
89{
90 const char *end, *end_tmp, *start;
91 __u16 *in;
92 char num[5];
93 int num2, cnt, out, found, save_cnt;
94 unsigned short in_tmp[8] = {0, };
95
96 cnt = out = found = save_cnt = num2 = 0;
97 end = start = buf;
98 in = (__u16 *) addr;
99 memset(in, 0, 16);
100 while (*end) {
101 end = strchr(start, ':');
102 if (end == NULL) {
103 end = buf + strlen(buf);
104 end_tmp = strchr(start, '\n');
105 if (end_tmp != NULL)
106 end = end_tmp;
107 out = 1;
108 }
109 if ((end - start)) {
110 memset(num, 0, 5);
111 if ((end - start) > 4)
112 return -EINVAL;
113 memcpy(num, start, end - start);
114 if (!qeth_l3_isxdigit(num))
115 return -EINVAL;
116 sscanf(start, "%x", &num2);
117 if (found)
118 in_tmp[save_cnt++] = num2;
119 else
120 in[cnt++] = num2;
121 if (out)
122 break;
123 } else {
124 if (found)
125 return -EINVAL;
126 found = 1;
127 }
128 start = ++end;
129 }
130 if (cnt + save_cnt > 8)
131 return -EINVAL;
132 cnt = 7;
133 while (save_cnt)
134 in[cnt--] = in_tmp[--save_cnt];
135 return 0;
136}
137
138void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
139 char *buf)
140{
141 if (proto == QETH_PROT_IPV4)
142 qeth_l3_ipaddr4_to_string(addr, buf);
143 else if (proto == QETH_PROT_IPV6)
144 qeth_l3_ipaddr6_to_string(addr, buf);
145}
146
147int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
148 __u8 *addr)
149{
150 if (proto == QETH_PROT_IPV4)
151 return qeth_l3_string_to_ipaddr4(buf, addr);
152 else if (proto == QETH_PROT_IPV6)
153 return qeth_l3_string_to_ipaddr6(buf, addr);
154 else
155 return -EINVAL;
156}
157
158static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
159{
160 int i, j;
161 u8 octet;
162
163 for (i = 0; i < len; ++i) {
164 octet = addr[i];
165 for (j = 7; j >= 0; --j) {
166 bits[i*8 + j] = octet & 1;
167 octet >>= 1;
168 }
169 }
170}
171
172static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
173 struct qeth_ipaddr *addr)
174{
175 struct qeth_ipato_entry *ipatoe;
176 u8 addr_bits[128] = {0, };
177 u8 ipatoe_bits[128] = {0, };
178 int rc = 0;
179
180 if (!card->ipato.enabled)
181 return 0;
182
183 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
184 (addr->proto == QETH_PROT_IPV4)? 4:16);
185 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
186 if (addr->proto != ipatoe->proto)
187 continue;
188 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
189 (ipatoe->proto == QETH_PROT_IPV4) ?
190 4 : 16);
191 if (addr->proto == QETH_PROT_IPV4)
192 rc = !memcmp(addr_bits, ipatoe_bits,
193 min(32, ipatoe->mask_bits));
194 else
195 rc = !memcmp(addr_bits, ipatoe_bits,
196 min(128, ipatoe->mask_bits));
197 if (rc)
198 break;
199 }
200 /* invert? */
201 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
202 rc = !rc;
203 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
204 rc = !rc;
205
206 return rc;
207}
208
209/*
210 * Add IP to be added to todo list. If there is already an "add todo"
211 * in this list we just incremenent the reference count.
212 * Returns 0 if we just incremented reference count.
213 */
214static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
215 struct qeth_ipaddr *addr, int add)
216{
217 struct qeth_ipaddr *tmp, *t;
218 int found = 0;
219
220 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
221 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
222 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
223 return 0;
224 if ((tmp->proto == QETH_PROT_IPV4) &&
225 (addr->proto == QETH_PROT_IPV4) &&
226 (tmp->type == addr->type) &&
227 (tmp->is_multicast == addr->is_multicast) &&
228 (tmp->u.a4.addr == addr->u.a4.addr) &&
229 (tmp->u.a4.mask == addr->u.a4.mask)) {
230 found = 1;
231 break;
232 }
233 if ((tmp->proto == QETH_PROT_IPV6) &&
234 (addr->proto == QETH_PROT_IPV6) &&
235 (tmp->type == addr->type) &&
236 (tmp->is_multicast == addr->is_multicast) &&
237 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
238 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
239 sizeof(struct in6_addr)) == 0)) {
240 found = 1;
241 break;
242 }
243 }
244 if (found) {
245 if (addr->users != 0)
246 tmp->users += addr->users;
247 else
248 tmp->users += add ? 1 : -1;
249 if (tmp->users == 0) {
250 list_del(&tmp->entry);
251 kfree(tmp);
252 }
253 return 0;
254 } else {
255 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
256 list_add(&addr->entry, card->ip_tbd_list);
257 else {
258 if (addr->users == 0)
259 addr->users += add ? 1 : -1;
260 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
261 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
262 QETH_DBF_TEXT(trace, 2, "tkovaddr");
263 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
264 }
265 list_add_tail(&addr->entry, card->ip_tbd_list);
266 }
267 return 1;
268 }
269}
270
271static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
272{
273 unsigned long flags;
274 int rc = 0;
275
276 QETH_DBF_TEXT(trace, 4, "delip");
277
278 if (addr->proto == QETH_PROT_IPV4)
279 QETH_DBF_HEX(trace, 4, &addr->u.a4.addr, 4);
280 else {
281 QETH_DBF_HEX(trace, 4, &addr->u.a6.addr, 8);
282 QETH_DBF_HEX(trace, 4, ((char *)&addr->u.a6.addr) + 8, 8);
283 }
284 spin_lock_irqsave(&card->ip_lock, flags);
285 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
286 spin_unlock_irqrestore(&card->ip_lock, flags);
287 return rc;
288}
289
290static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
291{
292 unsigned long flags;
293 int rc = 0;
294
295 QETH_DBF_TEXT(trace, 4, "addip");
296 if (addr->proto == QETH_PROT_IPV4)
297 QETH_DBF_HEX(trace, 4, &addr->u.a4.addr, 4);
298 else {
299 QETH_DBF_HEX(trace, 4, &addr->u.a6.addr, 8);
300 QETH_DBF_HEX(trace, 4, ((char *)&addr->u.a6.addr) + 8, 8);
301 }
302 spin_lock_irqsave(&card->ip_lock, flags);
303 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
304 spin_unlock_irqrestore(&card->ip_lock, flags);
305 return rc;
306}
307
308
309static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
310 enum qeth_prot_versions prot)
311{
312 struct qeth_ipaddr *addr;
313
314 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
315 if (addr == NULL) {
316 PRINT_WARN("Not enough memory to add address\n");
317 return NULL;
318 }
319 addr->type = QETH_IP_TYPE_NORMAL;
320 addr->proto = prot;
321 return addr;
322}
323
324static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
325{
326 struct qeth_ipaddr *iptodo;
327 unsigned long flags;
328
329 QETH_DBF_TEXT(trace, 4, "delmc");
330 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
331 if (!iptodo) {
332 QETH_DBF_TEXT(trace, 2, "dmcnomem");
333 return;
334 }
335 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
336 spin_lock_irqsave(&card->ip_lock, flags);
337 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
338 kfree(iptodo);
339 spin_unlock_irqrestore(&card->ip_lock, flags);
340}
341
342/*
343 * Add/remove address to/from card's ip list, i.e. try to add or remove
344 * reference to/from an IP address that is already registered on the card.
345 * Returns:
346 * 0 address was on card and its reference count has been adjusted,
347 * but is still > 0, so nothing has to be done
348 * also returns 0 if card was not on card and the todo was to delete
349 * the address -> there is also nothing to be done
350 * 1 address was not on card and the todo is to add it to the card's ip
351 * list
352 * -1 address was on card and its reference count has been decremented
353 * to <= 0 by the todo -> address must be removed from card
354 */
355static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
356 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
357{
358 struct qeth_ipaddr *addr;
359 int found = 0;
360
361 list_for_each_entry(addr, &card->ip_list, entry) {
362 if ((addr->proto == QETH_PROT_IPV4) &&
363 (todo->proto == QETH_PROT_IPV4) &&
364 (addr->type == todo->type) &&
365 (addr->u.a4.addr == todo->u.a4.addr) &&
366 (addr->u.a4.mask == todo->u.a4.mask)) {
367 found = 1;
368 break;
369 }
370 if ((addr->proto == QETH_PROT_IPV6) &&
371 (todo->proto == QETH_PROT_IPV6) &&
372 (addr->type == todo->type) &&
373 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
374 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
375 sizeof(struct in6_addr)) == 0)) {
376 found = 1;
377 break;
378 }
379 }
380 if (found) {
381 addr->users += todo->users;
382 if (addr->users <= 0) {
383 *__addr = addr;
384 return -1;
385 } else {
386 /* for VIPA and RXIP limit refcount to 1 */
387 if (addr->type != QETH_IP_TYPE_NORMAL)
388 addr->users = 1;
389 return 0;
390 }
391 }
392 if (todo->users > 0) {
393 /* for VIPA and RXIP limit refcount to 1 */
394 if (todo->type != QETH_IP_TYPE_NORMAL)
395 todo->users = 1;
396 return 1;
397 } else
398 return 0;
399}
400
401static void __qeth_l3_delete_all_mc(struct qeth_card *card,
402 unsigned long *flags)
403{
404 struct qeth_ipaddr *addr, *tmp;
405 int rc;
406again:
407 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
408 if (addr->is_multicast) {
409 list_del(&addr->entry);
410 spin_unlock_irqrestore(&card->ip_lock, *flags);
411 rc = qeth_l3_deregister_addr_entry(card, addr);
412 spin_lock_irqsave(&card->ip_lock, *flags);
413 if (!rc) {
414 kfree(addr);
415 goto again;
416 } else
417 list_add(&addr->entry, &card->ip_list);
418 }
419 }
420}
421
422static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
423{
424 struct list_head *tbd_list;
425 struct qeth_ipaddr *todo, *addr;
426 unsigned long flags;
427 int rc;
428
429 QETH_DBF_TEXT(trace, 2, "sdiplist");
430 QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
431
432 spin_lock_irqsave(&card->ip_lock, flags);
433 tbd_list = card->ip_tbd_list;
434 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
435 if (!card->ip_tbd_list) {
436 QETH_DBF_TEXT(trace, 0, "silnomem");
437 card->ip_tbd_list = tbd_list;
438 spin_unlock_irqrestore(&card->ip_lock, flags);
439 return;
440 } else
441 INIT_LIST_HEAD(card->ip_tbd_list);
442
443 while (!list_empty(tbd_list)) {
444 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
445 list_del(&todo->entry);
446 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
447 __qeth_l3_delete_all_mc(card, &flags);
448 kfree(todo);
449 continue;
450 }
451 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
452 if (rc == 0) {
453 /* nothing to be done; only adjusted refcount */
454 kfree(todo);
455 } else if (rc == 1) {
456 /* new entry to be added to on-card list */
457 spin_unlock_irqrestore(&card->ip_lock, flags);
458 rc = qeth_l3_register_addr_entry(card, todo);
459 spin_lock_irqsave(&card->ip_lock, flags);
460 if (!rc)
461 list_add_tail(&todo->entry, &card->ip_list);
462 else
463 kfree(todo);
464 } else if (rc == -1) {
465 /* on-card entry to be removed */
466 list_del_init(&addr->entry);
467 spin_unlock_irqrestore(&card->ip_lock, flags);
468 rc = qeth_l3_deregister_addr_entry(card, addr);
469 spin_lock_irqsave(&card->ip_lock, flags);
470 if (!rc)
471 kfree(addr);
472 else
473 list_add_tail(&addr->entry, &card->ip_list);
474 kfree(todo);
475 }
476 }
477 spin_unlock_irqrestore(&card->ip_lock, flags);
478 kfree(tbd_list);
479}
480
481static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
482 int recover)
483{
484 struct qeth_ipaddr *addr, *tmp;
485 unsigned long flags;
486
487 QETH_DBF_TEXT(trace, 4, "clearip");
488 spin_lock_irqsave(&card->ip_lock, flags);
489 /* clear todo list */
490 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
491 list_del(&addr->entry);
492 kfree(addr);
493 }
494
495 while (!list_empty(&card->ip_list)) {
496 addr = list_entry(card->ip_list.next,
497 struct qeth_ipaddr, entry);
498 list_del_init(&addr->entry);
499 if (clean) {
500 spin_unlock_irqrestore(&card->ip_lock, flags);
501 qeth_l3_deregister_addr_entry(card, addr);
502 spin_lock_irqsave(&card->ip_lock, flags);
503 }
504 if (!recover || addr->is_multicast) {
505 kfree(addr);
506 continue;
507 }
508 list_add_tail(&addr->entry, card->ip_tbd_list);
509 }
510 spin_unlock_irqrestore(&card->ip_lock, flags);
511}
512
513static int qeth_l3_address_exists_in_list(struct list_head *list,
514 struct qeth_ipaddr *addr, int same_type)
515{
516 struct qeth_ipaddr *tmp;
517
518 list_for_each_entry(tmp, list, entry) {
519 if ((tmp->proto == QETH_PROT_IPV4) &&
520 (addr->proto == QETH_PROT_IPV4) &&
521 ((same_type && (tmp->type == addr->type)) ||
522 (!same_type && (tmp->type != addr->type))) &&
523 (tmp->u.a4.addr == addr->u.a4.addr))
524 return 1;
525
526 if ((tmp->proto == QETH_PROT_IPV6) &&
527 (addr->proto == QETH_PROT_IPV6) &&
528 ((same_type && (tmp->type == addr->type)) ||
529 (!same_type && (tmp->type != addr->type))) &&
530 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
531 sizeof(struct in6_addr)) == 0))
532 return 1;
533
534 }
535 return 0;
536}
537
538static int qeth_l3_send_setdelmc(struct qeth_card *card,
539 struct qeth_ipaddr *addr, int ipacmd)
540{
541 int rc;
542 struct qeth_cmd_buffer *iob;
543 struct qeth_ipa_cmd *cmd;
544
545 QETH_DBF_TEXT(trace, 4, "setdelmc");
546
547 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
548 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
549 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
550 if (addr->proto == QETH_PROT_IPV6)
551 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
552 sizeof(struct in6_addr));
553 else
554 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
555
556 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
557
558 return rc;
559}
560
561static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
562{
563 int i, j;
564 for (i = 0; i < 16; i++) {
565 j = (len) - (i * 8);
566 if (j >= 8)
567 netmask[i] = 0xff;
568 else if (j > 0)
569 netmask[i] = (u8)(0xFF00 >> j);
570 else
571 netmask[i] = 0;
572 }
573}
574
575static int qeth_l3_send_setdelip(struct qeth_card *card,
576 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
577{
578 int rc;
579 struct qeth_cmd_buffer *iob;
580 struct qeth_ipa_cmd *cmd;
581 __u8 netmask[16];
582
583 QETH_DBF_TEXT(trace, 4, "setdelip");
584 QETH_DBF_TEXT_(trace, 4, "flags%02X", flags);
585
586 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
587 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
588 if (addr->proto == QETH_PROT_IPV6) {
589 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
590 sizeof(struct in6_addr));
591 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
592 memcpy(cmd->data.setdelip6.mask, netmask,
593 sizeof(struct in6_addr));
594 cmd->data.setdelip6.flags = flags;
595 } else {
596 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
597 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
598 cmd->data.setdelip4.flags = flags;
599 }
600
601 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
602
603 return rc;
604}
605
606static int qeth_l3_send_setrouting(struct qeth_card *card,
607 enum qeth_routing_types type, enum qeth_prot_versions prot)
608{
609 int rc;
610 struct qeth_ipa_cmd *cmd;
611 struct qeth_cmd_buffer *iob;
612
613 QETH_DBF_TEXT(trace, 4, "setroutg");
614 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
615 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
616 cmd->data.setrtg.type = (type);
617 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
618
619 return rc;
620}
621
622static void qeth_l3_correct_routing_type(struct qeth_card *card,
623 enum qeth_routing_types *type, enum qeth_prot_versions prot)
624{
625 if (card->info.type == QETH_CARD_TYPE_IQD) {
626 switch (*type) {
627 case NO_ROUTER:
628 case PRIMARY_CONNECTOR:
629 case SECONDARY_CONNECTOR:
630 case MULTICAST_ROUTER:
631 return;
632 default:
633 goto out_inval;
634 }
635 } else {
636 switch (*type) {
637 case NO_ROUTER:
638 case PRIMARY_ROUTER:
639 case SECONDARY_ROUTER:
640 return;
641 case MULTICAST_ROUTER:
642 if (qeth_is_ipafunc_supported(card, prot,
643 IPA_OSA_MC_ROUTER))
644 return;
645 default:
646 goto out_inval;
647 }
648 }
649out_inval:
650 PRINT_WARN("Routing type '%s' not supported for interface %s.\n"
651 "Router status set to 'no router'.\n",
652 ((*type == PRIMARY_ROUTER)? "primary router" :
653 (*type == SECONDARY_ROUTER)? "secondary router" :
654 (*type == PRIMARY_CONNECTOR)? "primary connector" :
655 (*type == SECONDARY_CONNECTOR)? "secondary connector" :
656 (*type == MULTICAST_ROUTER)? "multicast router" :
657 "unknown"),
658 card->dev->name);
659 *type = NO_ROUTER;
660}
661
662int qeth_l3_setrouting_v4(struct qeth_card *card)
663{
664 int rc;
665
666 QETH_DBF_TEXT(trace, 3, "setrtg4");
667
668 qeth_l3_correct_routing_type(card, &card->options.route4.type,
669 QETH_PROT_IPV4);
670
671 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
672 QETH_PROT_IPV4);
673 if (rc) {
674 card->options.route4.type = NO_ROUTER;
675 PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
676 "Type set to 'no router'.\n",
677 rc, QETH_CARD_IFNAME(card));
678 }
679 return rc;
680}
681
682int qeth_l3_setrouting_v6(struct qeth_card *card)
683{
684 int rc = 0;
685
686 QETH_DBF_TEXT(trace, 3, "setrtg6");
687#ifdef CONFIG_QETH_IPV6
688
689 if (!qeth_is_supported(card, IPA_IPV6))
690 return 0;
691 qeth_l3_correct_routing_type(card, &card->options.route6.type,
692 QETH_PROT_IPV6);
693
694 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
695 QETH_PROT_IPV6);
696 if (rc) {
697 card->options.route6.type = NO_ROUTER;
698 PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
699 "Type set to 'no router'.\n",
700 rc, QETH_CARD_IFNAME(card));
701 }
702#endif
703 return rc;
704}
705
706/*
707 * IP address takeover related functions
708 */
709static void qeth_l3_clear_ipato_list(struct qeth_card *card)
710{
711
712 struct qeth_ipato_entry *ipatoe, *tmp;
713 unsigned long flags;
714
715 spin_lock_irqsave(&card->ip_lock, flags);
716 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
717 list_del(&ipatoe->entry);
718 kfree(ipatoe);
719 }
720 spin_unlock_irqrestore(&card->ip_lock, flags);
721}
722
723int qeth_l3_add_ipato_entry(struct qeth_card *card,
724 struct qeth_ipato_entry *new)
725{
726 struct qeth_ipato_entry *ipatoe;
727 unsigned long flags;
728 int rc = 0;
729
730 QETH_DBF_TEXT(trace, 2, "addipato");
731 spin_lock_irqsave(&card->ip_lock, flags);
732 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
733 if (ipatoe->proto != new->proto)
734 continue;
735 if (!memcmp(ipatoe->addr, new->addr,
736 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
737 (ipatoe->mask_bits == new->mask_bits)) {
738 PRINT_WARN("ipato entry already exists!\n");
739 rc = -EEXIST;
740 break;
741 }
742 }
743 if (!rc)
744 list_add_tail(&new->entry, &card->ipato.entries);
745
746 spin_unlock_irqrestore(&card->ip_lock, flags);
747 return rc;
748}
749
750void qeth_l3_del_ipato_entry(struct qeth_card *card,
751 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
752{
753 struct qeth_ipato_entry *ipatoe, *tmp;
754 unsigned long flags;
755
756 QETH_DBF_TEXT(trace, 2, "delipato");
757 spin_lock_irqsave(&card->ip_lock, flags);
758 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
759 if (ipatoe->proto != proto)
760 continue;
761 if (!memcmp(ipatoe->addr, addr,
762 (proto == QETH_PROT_IPV4)? 4:16) &&
763 (ipatoe->mask_bits == mask_bits)) {
764 list_del(&ipatoe->entry);
765 kfree(ipatoe);
766 }
767 }
768 spin_unlock_irqrestore(&card->ip_lock, flags);
769}
770
771/*
772 * VIPA related functions
773 */
774int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
775 const u8 *addr)
776{
777 struct qeth_ipaddr *ipaddr;
778 unsigned long flags;
779 int rc = 0;
780
781 ipaddr = qeth_l3_get_addr_buffer(proto);
782 if (ipaddr) {
783 if (proto == QETH_PROT_IPV4) {
784 QETH_DBF_TEXT(trace, 2, "addvipa4");
785 memcpy(&ipaddr->u.a4.addr, addr, 4);
786 ipaddr->u.a4.mask = 0;
787 } else if (proto == QETH_PROT_IPV6) {
788 QETH_DBF_TEXT(trace, 2, "addvipa6");
789 memcpy(&ipaddr->u.a6.addr, addr, 16);
790 ipaddr->u.a6.pfxlen = 0;
791 }
792 ipaddr->type = QETH_IP_TYPE_VIPA;
793 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
794 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
795 } else
796 return -ENOMEM;
797 spin_lock_irqsave(&card->ip_lock, flags);
798 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
799 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
800 rc = -EEXIST;
801 spin_unlock_irqrestore(&card->ip_lock, flags);
802 if (rc) {
803 PRINT_WARN("Cannot add VIPA. Address already exists!\n");
804 return rc;
805 }
806 if (!qeth_l3_add_ip(card, ipaddr))
807 kfree(ipaddr);
808 qeth_l3_set_ip_addr_list(card);
809 return rc;
810}
811
812void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
813 const u8 *addr)
814{
815 struct qeth_ipaddr *ipaddr;
816
817 ipaddr = qeth_l3_get_addr_buffer(proto);
818 if (ipaddr) {
819 if (proto == QETH_PROT_IPV4) {
820 QETH_DBF_TEXT(trace, 2, "delvipa4");
821 memcpy(&ipaddr->u.a4.addr, addr, 4);
822 ipaddr->u.a4.mask = 0;
823 } else if (proto == QETH_PROT_IPV6) {
824 QETH_DBF_TEXT(trace, 2, "delvipa6");
825 memcpy(&ipaddr->u.a6.addr, addr, 16);
826 ipaddr->u.a6.pfxlen = 0;
827 }
828 ipaddr->type = QETH_IP_TYPE_VIPA;
829 } else
830 return;
831 if (!qeth_l3_delete_ip(card, ipaddr))
832 kfree(ipaddr);
833 qeth_l3_set_ip_addr_list(card);
834}
835
836/*
837 * proxy ARP related functions
838 */
839int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
840 const u8 *addr)
841{
842 struct qeth_ipaddr *ipaddr;
843 unsigned long flags;
844 int rc = 0;
845
846 ipaddr = qeth_l3_get_addr_buffer(proto);
847 if (ipaddr) {
848 if (proto == QETH_PROT_IPV4) {
849 QETH_DBF_TEXT(trace, 2, "addrxip4");
850 memcpy(&ipaddr->u.a4.addr, addr, 4);
851 ipaddr->u.a4.mask = 0;
852 } else if (proto == QETH_PROT_IPV6) {
853 QETH_DBF_TEXT(trace, 2, "addrxip6");
854 memcpy(&ipaddr->u.a6.addr, addr, 16);
855 ipaddr->u.a6.pfxlen = 0;
856 }
857 ipaddr->type = QETH_IP_TYPE_RXIP;
858 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
859 ipaddr->del_flags = 0;
860 } else
861 return -ENOMEM;
862 spin_lock_irqsave(&card->ip_lock, flags);
863 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
864 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
865 rc = -EEXIST;
866 spin_unlock_irqrestore(&card->ip_lock, flags);
867 if (rc) {
868 PRINT_WARN("Cannot add RXIP. Address already exists!\n");
869 return rc;
870 }
871 if (!qeth_l3_add_ip(card, ipaddr))
872 kfree(ipaddr);
873 qeth_l3_set_ip_addr_list(card);
874 return 0;
875}
876
877void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
878 const u8 *addr)
879{
880 struct qeth_ipaddr *ipaddr;
881
882 ipaddr = qeth_l3_get_addr_buffer(proto);
883 if (ipaddr) {
884 if (proto == QETH_PROT_IPV4) {
885 QETH_DBF_TEXT(trace, 2, "addrxip4");
886 memcpy(&ipaddr->u.a4.addr, addr, 4);
887 ipaddr->u.a4.mask = 0;
888 } else if (proto == QETH_PROT_IPV6) {
889 QETH_DBF_TEXT(trace, 2, "addrxip6");
890 memcpy(&ipaddr->u.a6.addr, addr, 16);
891 ipaddr->u.a6.pfxlen = 0;
892 }
893 ipaddr->type = QETH_IP_TYPE_RXIP;
894 } else
895 return;
896 if (!qeth_l3_delete_ip(card, ipaddr))
897 kfree(ipaddr);
898 qeth_l3_set_ip_addr_list(card);
899}
900
901static int qeth_l3_register_addr_entry(struct qeth_card *card,
902 struct qeth_ipaddr *addr)
903{
904 char buf[50];
905 int rc = 0;
906 int cnt = 3;
907
908 if (addr->proto == QETH_PROT_IPV4) {
909 QETH_DBF_TEXT(trace, 2, "setaddr4");
910 QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
911 } else if (addr->proto == QETH_PROT_IPV6) {
912 QETH_DBF_TEXT(trace, 2, "setaddr6");
913 QETH_DBF_HEX(trace, 3, &addr->u.a6.addr, 8);
914 QETH_DBF_HEX(trace, 3, ((char *)&addr->u.a6.addr) + 8, 8);
915 } else {
916 QETH_DBF_TEXT(trace, 2, "setaddr?");
917 QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
918 }
919 do {
920 if (addr->is_multicast)
921 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
922 else
923 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
924 addr->set_flags);
925 if (rc)
926 QETH_DBF_TEXT(trace, 2, "failed");
927 } while ((--cnt > 0) && rc);
928 if (rc) {
929 QETH_DBF_TEXT(trace, 2, "FAILED");
930 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
931 PRINT_WARN("Could not register IP address %s (rc=0x%x/%d)\n",
932 buf, rc, rc);
933 }
934 return rc;
935}
936
937static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
938 struct qeth_ipaddr *addr)
939{
940 int rc = 0;
941
942 if (addr->proto == QETH_PROT_IPV4) {
943 QETH_DBF_TEXT(trace, 2, "deladdr4");
944 QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
945 } else if (addr->proto == QETH_PROT_IPV6) {
946 QETH_DBF_TEXT(trace, 2, "deladdr6");
947 QETH_DBF_HEX(trace, 3, &addr->u.a6.addr, 8);
948 QETH_DBF_HEX(trace, 3, ((char *)&addr->u.a6.addr) + 8, 8);
949 } else {
950 QETH_DBF_TEXT(trace, 2, "deladdr?");
951 QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
952 }
953 if (addr->is_multicast)
954 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
955 else
956 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
957 addr->del_flags);
958 if (rc) {
959 QETH_DBF_TEXT(trace, 2, "failed");
960 /* TODO: re-activate this warning as soon as we have a
961 * clean mirco code
962 qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
963 PRINT_WARN("Could not deregister IP address %s (rc=%x)\n",
964 buf, rc);
965 */
966 }
967
968 return rc;
969}
970
971static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
972{
973 if (cast_type == RTN_MULTICAST)
974 return QETH_CAST_MULTICAST;
975 if (cast_type == RTN_BROADCAST)
976 return QETH_CAST_BROADCAST;
977 return QETH_CAST_UNICAST;
978}
979
980static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
981{
982 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
983 if (cast_type == RTN_MULTICAST)
984 return ct | QETH_CAST_MULTICAST;
985 if (cast_type == RTN_ANYCAST)
986 return ct | QETH_CAST_ANYCAST;
987 if (cast_type == RTN_BROADCAST)
988 return ct | QETH_CAST_BROADCAST;
989 return ct | QETH_CAST_UNICAST;
990}
991
992static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
993 __u32 mode)
994{
995 int rc;
996 struct qeth_cmd_buffer *iob;
997 struct qeth_ipa_cmd *cmd;
998
999 QETH_DBF_TEXT(trace, 4, "adpmode");
1000
1001 iob = qeth_get_adapter_cmd(card, command,
1002 sizeof(struct qeth_ipacmd_setadpparms));
1003 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1004 cmd->data.setadapterparms.data.mode = mode;
1005 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
1006 NULL);
1007 return rc;
1008}
1009
1010static int qeth_l3_setadapter_hstr(struct qeth_card *card)
1011{
1012 int rc;
1013
1014 QETH_DBF_TEXT(trace, 4, "adphstr");
1015
1016 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1017 rc = qeth_l3_send_setadp_mode(card,
1018 IPA_SETADP_SET_BROADCAST_MODE,
1019 card->options.broadcast_mode);
1020 if (rc)
1021 PRINT_WARN("couldn't set broadcast mode on "
1022 "device %s: x%x\n",
1023 CARD_BUS_ID(card), rc);
1024 rc = qeth_l3_send_setadp_mode(card,
1025 IPA_SETADP_ALTER_MAC_ADDRESS,
1026 card->options.macaddr_mode);
1027 if (rc)
1028 PRINT_WARN("couldn't set macaddr mode on "
1029 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1030 return rc;
1031 }
1032 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1033 PRINT_WARN("set adapter parameters not available "
1034 "to set broadcast mode, using ALLRINGS "
1035 "on device %s:\n", CARD_BUS_ID(card));
1036 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1037 PRINT_WARN("set adapter parameters not available "
1038 "to set macaddr mode, using NONCANONICAL "
1039 "on device %s:\n", CARD_BUS_ID(card));
1040 return 0;
1041}
1042
1043static int qeth_l3_setadapter_parms(struct qeth_card *card)
1044{
1045 int rc;
1046
1047 QETH_DBF_TEXT(setup, 2, "setadprm");
1048
1049 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1050 PRINT_WARN("set adapter parameters not supported "
1051 "on device %s.\n",
1052 CARD_BUS_ID(card));
1053 QETH_DBF_TEXT(setup, 2, " notsupp");
1054 return 0;
1055 }
1056 rc = qeth_query_setadapterparms(card);
1057 if (rc) {
1058 PRINT_WARN("couldn't set adapter parameters on device %s: "
1059 "x%x\n", CARD_BUS_ID(card), rc);
1060 return rc;
1061 }
1062 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1063 rc = qeth_setadpparms_change_macaddr(card);
1064 if (rc)
1065 PRINT_WARN("couldn't get MAC address on "
1066 "device %s: x%x\n",
1067 CARD_BUS_ID(card), rc);
1068 }
1069
1070 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1071 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1072 rc = qeth_l3_setadapter_hstr(card);
1073
1074 return rc;
1075}
1076
1077static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1078 struct qeth_reply *reply, unsigned long data)
1079{
1080 struct qeth_ipa_cmd *cmd;
1081
1082 QETH_DBF_TEXT(trace, 4, "defadpcb");
1083
1084 cmd = (struct qeth_ipa_cmd *) data;
1085 if (cmd->hdr.return_code == 0) {
1086 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1087 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1088 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1089 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1090 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1091 }
1092 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1093 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1094 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1095 QETH_DBF_TEXT_(trace, 3, "csum:%d", card->info.csum_mask);
1096 }
1097 return 0;
1098}
1099
1100static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1101 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1102 __u16 len, enum qeth_prot_versions prot)
1103{
1104 struct qeth_cmd_buffer *iob;
1105 struct qeth_ipa_cmd *cmd;
1106
1107 QETH_DBF_TEXT(trace, 4, "getasscm");
1108 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1109
1110 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1111 cmd->data.setassparms.hdr.assist_no = ipa_func;
1112 cmd->data.setassparms.hdr.length = 8 + len;
1113 cmd->data.setassparms.hdr.command_code = cmd_code;
1114 cmd->data.setassparms.hdr.return_code = 0;
1115 cmd->data.setassparms.hdr.seq_no = 0;
1116
1117 return iob;
1118}
1119
1120static int qeth_l3_send_setassparms(struct qeth_card *card,
1121 struct qeth_cmd_buffer *iob, __u16 len, long data,
1122 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1123 unsigned long),
1124 void *reply_param)
1125{
1126 int rc;
1127 struct qeth_ipa_cmd *cmd;
1128
1129 QETH_DBF_TEXT(trace, 4, "sendassp");
1130
1131 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1132 if (len <= sizeof(__u32))
1133 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1134 else /* (len > sizeof(__u32)) */
1135 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1136
1137 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1138 return rc;
1139}
1140
1141#ifdef CONFIG_QETH_IPV6
1142static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1143 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1144{
1145 int rc;
1146 struct qeth_cmd_buffer *iob;
1147
1148 QETH_DBF_TEXT(trace, 4, "simassp6");
1149 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1150 0, QETH_PROT_IPV6);
1151 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1152 qeth_l3_default_setassparms_cb, NULL);
1153 return rc;
1154}
1155#endif
1156
1157static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1158 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1159{
1160 int rc;
1161 int length = 0;
1162 struct qeth_cmd_buffer *iob;
1163
1164 QETH_DBF_TEXT(trace, 4, "simassp4");
1165 if (data)
1166 length = sizeof(__u32);
1167 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1168 length, QETH_PROT_IPV4);
1169 rc = qeth_l3_send_setassparms(card, iob, length, data,
1170 qeth_l3_default_setassparms_cb, NULL);
1171 return rc;
1172}
1173
1174static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1175{
1176 int rc;
1177
1178 QETH_DBF_TEXT(trace, 3, "ipaarp");
1179
1180 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1181 PRINT_WARN("ARP processing not supported "
1182 "on %s!\n", QETH_CARD_IFNAME(card));
1183 return 0;
1184 }
1185 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1186 IPA_CMD_ASS_START, 0);
1187 if (rc) {
1188 PRINT_WARN("Could not start ARP processing "
1189 "assist on %s: 0x%x\n",
1190 QETH_CARD_IFNAME(card), rc);
1191 }
1192 return rc;
1193}
1194
1195static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1196{
1197 int rc;
1198
1199 QETH_DBF_TEXT(trace, 3, "ipaipfrg");
1200
1201 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1202 PRINT_INFO("Hardware IP fragmentation not supported on %s\n",
1203 QETH_CARD_IFNAME(card));
1204 return -EOPNOTSUPP;
1205 }
1206
1207 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1208 IPA_CMD_ASS_START, 0);
1209 if (rc) {
1210 PRINT_WARN("Could not start Hardware IP fragmentation "
1211 "assist on %s: 0x%x\n",
1212 QETH_CARD_IFNAME(card), rc);
1213 } else
1214 PRINT_INFO("Hardware IP fragmentation enabled \n");
1215 return rc;
1216}
1217
1218static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1219{
1220 int rc;
1221
1222 QETH_DBF_TEXT(trace, 3, "stsrcmac");
1223
1224 if (!card->options.fake_ll)
1225 return -EOPNOTSUPP;
1226
1227 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1228 PRINT_INFO("Inbound source address not "
1229 "supported on %s\n", QETH_CARD_IFNAME(card));
1230 return -EOPNOTSUPP;
1231 }
1232
1233 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1234 IPA_CMD_ASS_START, 0);
1235 if (rc)
1236 PRINT_WARN("Could not start inbound source "
1237 "assist on %s: 0x%x\n",
1238 QETH_CARD_IFNAME(card), rc);
1239 return rc;
1240}
1241
1242static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1243{
1244 int rc = 0;
1245
1246 QETH_DBF_TEXT(trace, 3, "strtvlan");
1247
1248 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1249 PRINT_WARN("VLAN not supported on %s\n",
1250 QETH_CARD_IFNAME(card));
1251 return -EOPNOTSUPP;
1252 }
1253
1254 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1255 IPA_CMD_ASS_START, 0);
1256 if (rc) {
1257 PRINT_WARN("Could not start vlan "
1258 "assist on %s: 0x%x\n",
1259 QETH_CARD_IFNAME(card), rc);
1260 } else {
1261 PRINT_INFO("VLAN enabled \n");
1262 }
1263 return rc;
1264}
1265
1266static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1267{
1268 int rc;
1269
1270 QETH_DBF_TEXT(trace, 3, "stmcast");
1271
1272 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1273 PRINT_WARN("Multicast not supported on %s\n",
1274 QETH_CARD_IFNAME(card));
1275 return -EOPNOTSUPP;
1276 }
1277
1278 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1279 IPA_CMD_ASS_START, 0);
1280 if (rc) {
1281 PRINT_WARN("Could not start multicast "
1282 "assist on %s: rc=%i\n",
1283 QETH_CARD_IFNAME(card), rc);
1284 } else {
1285 PRINT_INFO("Multicast enabled\n");
1286 card->dev->flags |= IFF_MULTICAST;
1287 }
1288 return rc;
1289}
1290
1291static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1292 struct qeth_reply *reply, unsigned long data)
1293{
1294 struct qeth_ipa_cmd *cmd;
1295
1296 QETH_DBF_TEXT(setup, 2, "qipasscb");
1297
1298 cmd = (struct qeth_ipa_cmd *) data;
1299 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1300 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1301 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1302 } else {
1303 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1304 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1305 }
1306 QETH_DBF_TEXT(setup, 2, "suppenbl");
1307 QETH_DBF_TEXT_(setup, 2, "%x", cmd->hdr.ipa_supported);
1308 QETH_DBF_TEXT_(setup, 2, "%x", cmd->hdr.ipa_enabled);
1309 return 0;
1310}
1311
1312static int qeth_l3_query_ipassists(struct qeth_card *card,
1313 enum qeth_prot_versions prot)
1314{
1315 int rc;
1316 struct qeth_cmd_buffer *iob;
1317
1318 QETH_DBF_TEXT_(setup, 2, "qipassi%i", prot);
1319 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1320 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1321 return rc;
1322}
1323
1324#ifdef CONFIG_QETH_IPV6
1325static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1326{
1327 int rc;
1328
1329 QETH_DBF_TEXT(trace, 3, "softipv6");
1330
1331 if (card->info.type == QETH_CARD_TYPE_IQD)
1332 goto out;
1333
1334 rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1335 if (rc) {
1336 PRINT_ERR("IPv6 query ipassist failed on %s\n",
1337 QETH_CARD_IFNAME(card));
1338 return rc;
1339 }
1340 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1341 IPA_CMD_ASS_START, 3);
1342 if (rc) {
1343 PRINT_WARN("IPv6 start assist (version 4) failed "
1344 "on %s: 0x%x\n",
1345 QETH_CARD_IFNAME(card), rc);
1346 return rc;
1347 }
1348 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1349 IPA_CMD_ASS_START);
1350 if (rc) {
1351 PRINT_WARN("IPV6 start assist (version 6) failed "
1352 "on %s: 0x%x\n",
1353 QETH_CARD_IFNAME(card), rc);
1354 return rc;
1355 }
1356 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1357 IPA_CMD_ASS_START);
1358 if (rc) {
1359 PRINT_WARN("Could not enable passthrough "
1360 "on %s: 0x%x\n",
1361 QETH_CARD_IFNAME(card), rc);
1362 return rc;
1363 }
1364out:
1365 PRINT_INFO("IPV6 enabled \n");
1366 return 0;
1367}
1368#endif
1369
1370static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1371{
1372 int rc = 0;
1373
1374 QETH_DBF_TEXT(trace, 3, "strtipv6");
1375
1376 if (!qeth_is_supported(card, IPA_IPV6)) {
1377 PRINT_WARN("IPv6 not supported on %s\n",
1378 QETH_CARD_IFNAME(card));
1379 return 0;
1380 }
1381#ifdef CONFIG_QETH_IPV6
1382 rc = qeth_l3_softsetup_ipv6(card);
1383#endif
1384 return rc ;
1385}
1386
1387static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1388{
1389 int rc;
1390
1391 QETH_DBF_TEXT(trace, 3, "stbrdcst");
1392 card->info.broadcast_capable = 0;
1393 if (!qeth_is_supported(card, IPA_FILTERING)) {
1394 PRINT_WARN("Broadcast not supported on %s\n",
1395 QETH_CARD_IFNAME(card));
1396 rc = -EOPNOTSUPP;
1397 goto out;
1398 }
1399 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1400 IPA_CMD_ASS_START, 0);
1401 if (rc) {
1402 PRINT_WARN("Could not enable broadcasting filtering "
1403 "on %s: 0x%x\n",
1404 QETH_CARD_IFNAME(card), rc);
1405 goto out;
1406 }
1407
1408 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1409 IPA_CMD_ASS_CONFIGURE, 1);
1410 if (rc) {
1411 PRINT_WARN("Could not set up broadcast filtering on %s: 0x%x\n",
1412 QETH_CARD_IFNAME(card), rc);
1413 goto out;
1414 }
1415 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1416 PRINT_INFO("Broadcast enabled \n");
1417 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1418 IPA_CMD_ASS_ENABLE, 1);
1419 if (rc) {
1420 PRINT_WARN("Could not set up broadcast echo filtering on "
1421 "%s: 0x%x\n", QETH_CARD_IFNAME(card), rc);
1422 goto out;
1423 }
1424 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1425out:
1426 if (card->info.broadcast_capable)
1427 card->dev->flags |= IFF_BROADCAST;
1428 else
1429 card->dev->flags &= ~IFF_BROADCAST;
1430 return rc;
1431}
1432
1433static int qeth_l3_send_checksum_command(struct qeth_card *card)
1434{
1435 int rc;
1436
1437 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1438 IPA_CMD_ASS_START, 0);
1439 if (rc) {
1440 PRINT_WARN("Starting Inbound HW Checksumming failed on %s: "
1441 "0x%x,\ncontinuing using Inbound SW Checksumming\n",
1442 QETH_CARD_IFNAME(card), rc);
1443 return rc;
1444 }
1445 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1446 IPA_CMD_ASS_ENABLE,
1447 card->info.csum_mask);
1448 if (rc) {
1449 PRINT_WARN("Enabling Inbound HW Checksumming failed on %s: "
1450 "0x%x,\ncontinuing using Inbound SW Checksumming\n",
1451 QETH_CARD_IFNAME(card), rc);
1452 return rc;
1453 }
1454 return 0;
1455}
1456
1457static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1458{
1459 int rc = 0;
1460
1461 QETH_DBF_TEXT(trace, 3, "strtcsum");
1462
1463 if (card->options.checksum_type == NO_CHECKSUMMING) {
1464 PRINT_WARN("Using no checksumming on %s.\n",
1465 QETH_CARD_IFNAME(card));
1466 return 0;
1467 }
1468 if (card->options.checksum_type == SW_CHECKSUMMING) {
1469 PRINT_WARN("Using SW checksumming on %s.\n",
1470 QETH_CARD_IFNAME(card));
1471 return 0;
1472 }
1473 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1474 PRINT_WARN("Inbound HW Checksumming not "
1475 "supported on %s,\ncontinuing "
1476 "using Inbound SW Checksumming\n",
1477 QETH_CARD_IFNAME(card));
1478 card->options.checksum_type = SW_CHECKSUMMING;
1479 return 0;
1480 }
1481 rc = qeth_l3_send_checksum_command(card);
1482 if (!rc)
1483 PRINT_INFO("HW Checksumming (inbound) enabled \n");
1484
1485 return rc;
1486}
1487
1488static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1489{
1490 int rc;
1491
1492 QETH_DBF_TEXT(trace, 3, "sttso");
1493
1494 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1495 PRINT_WARN("Outbound TSO not supported on %s\n",
1496 QETH_CARD_IFNAME(card));
1497 rc = -EOPNOTSUPP;
1498 } else {
1499 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1500 IPA_CMD_ASS_START, 0);
1501 if (rc)
1502 PRINT_WARN("Could not start outbound TSO "
1503 "assist on %s: rc=%i\n",
1504 QETH_CARD_IFNAME(card), rc);
1505 else
1506 PRINT_INFO("Outbound TSO enabled\n");
1507 }
1508 if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1509 card->options.large_send = QETH_LARGE_SEND_NO;
1510 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1511 }
1512 return rc;
1513}
1514
1515static int qeth_l3_start_ipassists(struct qeth_card *card)
1516{
1517 QETH_DBF_TEXT(trace, 3, "strtipas");
1518 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1519 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1520 qeth_l3_start_ipa_source_mac(card); /* go on*/
1521 qeth_l3_start_ipa_vlan(card); /* go on*/
1522 qeth_l3_start_ipa_multicast(card); /* go on*/
1523 qeth_l3_start_ipa_ipv6(card); /* go on*/
1524 qeth_l3_start_ipa_broadcast(card); /* go on*/
1525 qeth_l3_start_ipa_checksum(card); /* go on*/
1526 qeth_l3_start_ipa_tso(card); /* go on*/
1527 return 0;
1528}
1529
1530static int qeth_l3_put_unique_id(struct qeth_card *card)
1531{
1532
1533 int rc = 0;
1534 struct qeth_cmd_buffer *iob;
1535 struct qeth_ipa_cmd *cmd;
1536
1537 QETH_DBF_TEXT(trace, 2, "puniqeid");
1538
1539 if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1540 UNIQUE_ID_NOT_BY_CARD)
1541 return -1;
1542 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1543 QETH_PROT_IPV6);
1544 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1545 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1546 card->info.unique_id;
1547 memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1548 card->dev->dev_addr, OSA_ADDR_LEN);
1549 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1550 return rc;
1551}
1552
1553static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1554 struct qeth_reply *reply, unsigned long data)
1555{
1556 struct qeth_ipa_cmd *cmd;
1557
1558 cmd = (struct qeth_ipa_cmd *) data;
1559 if (cmd->hdr.return_code == 0)
1560 memcpy(card->dev->dev_addr,
1561 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1562 else
1563 random_ether_addr(card->dev->dev_addr);
1564
1565 return 0;
1566}
1567
1568static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1569{
1570 int rc = 0;
1571 struct qeth_cmd_buffer *iob;
1572 struct qeth_ipa_cmd *cmd;
1573
1574 QETH_DBF_TEXT(setup, 2, "hsrmac");
1575
1576 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1577 QETH_PROT_IPV6);
1578 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1579 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1580 card->info.unique_id;
1581
1582 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1583 NULL);
1584 return rc;
1585}
1586
1587static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1588 struct qeth_reply *reply, unsigned long data)
1589{
1590 struct qeth_ipa_cmd *cmd;
1591
1592 cmd = (struct qeth_ipa_cmd *) data;
1593 if (cmd->hdr.return_code == 0)
1594 card->info.unique_id = *((__u16 *)
1595 &cmd->data.create_destroy_addr.unique_id[6]);
1596 else {
1597 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1598 UNIQUE_ID_NOT_BY_CARD;
1599 PRINT_WARN("couldn't get a unique id from the card on device "
1600 "%s (result=x%x), using default id. ipv6 "
1601 "autoconfig on other lpars may lead to duplicate "
1602 "ip addresses. please use manually "
1603 "configured ones.\n",
1604 CARD_BUS_ID(card), cmd->hdr.return_code);
1605 }
1606 return 0;
1607}
1608
1609static int qeth_l3_get_unique_id(struct qeth_card *card)
1610{
1611 int rc = 0;
1612 struct qeth_cmd_buffer *iob;
1613 struct qeth_ipa_cmd *cmd;
1614
1615 QETH_DBF_TEXT(setup, 2, "guniqeid");
1616
1617 if (!qeth_is_supported(card, IPA_IPV6)) {
1618 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1619 UNIQUE_ID_NOT_BY_CARD;
1620 return 0;
1621 }
1622
1623 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1624 QETH_PROT_IPV6);
1625 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1626 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1627 card->info.unique_id;
1628
1629 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1630 return rc;
1631}
1632
1633static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1634 struct net_device *dev)
1635{
1636 if (dev->type == ARPHRD_IEEE802_TR)
1637 ip_tr_mc_map(ipm, mac);
1638 else
1639 ip_eth_mc_map(ipm, mac);
1640}
1641
1642static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1643{
1644 struct qeth_ipaddr *ipm;
1645 struct ip_mc_list *im4;
1646 char buf[MAX_ADDR_LEN];
1647
1648 QETH_DBF_TEXT(trace, 4, "addmc");
1649 for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1650 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1651 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1652 if (!ipm)
1653 continue;
1654 ipm->u.a4.addr = im4->multiaddr;
1655 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1656 ipm->is_multicast = 1;
1657 if (!qeth_l3_add_ip(card, ipm))
1658 kfree(ipm);
1659 }
1660}
1661
1662static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1663{
1664 struct in_device *in_dev;
1665 struct vlan_group *vg;
1666 int i;
1667
1668 QETH_DBF_TEXT(trace, 4, "addmcvl");
1669 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1670 return;
1671
1672 vg = card->vlangrp;
1673 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1674 struct net_device *netdev = vlan_group_get_device(vg, i);
1675 if (netdev == NULL ||
1676 !(netdev->flags & IFF_UP))
1677 continue;
1678 in_dev = in_dev_get(netdev);
1679 if (!in_dev)
1680 continue;
1681 read_lock(&in_dev->mc_list_lock);
1682 qeth_l3_add_mc(card, in_dev);
1683 read_unlock(&in_dev->mc_list_lock);
1684 in_dev_put(in_dev);
1685 }
1686}
1687
1688static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1689{
1690 struct in_device *in4_dev;
1691
1692 QETH_DBF_TEXT(trace, 4, "chkmcv4");
1693 in4_dev = in_dev_get(card->dev);
1694 if (in4_dev == NULL)
1695 return;
1696 read_lock(&in4_dev->mc_list_lock);
1697 qeth_l3_add_mc(card, in4_dev);
1698 qeth_l3_add_vlan_mc(card);
1699 read_unlock(&in4_dev->mc_list_lock);
1700 in_dev_put(in4_dev);
1701}
1702
1703#ifdef CONFIG_QETH_IPV6
1704static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1705{
1706 struct qeth_ipaddr *ipm;
1707 struct ifmcaddr6 *im6;
1708 char buf[MAX_ADDR_LEN];
1709
1710 QETH_DBF_TEXT(trace, 4, "addmc6");
1711 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1712 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1713 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1714 if (!ipm)
1715 continue;
1716 ipm->is_multicast = 1;
1717 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1718 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1719 sizeof(struct in6_addr));
1720 if (!qeth_l3_add_ip(card, ipm))
1721 kfree(ipm);
1722 }
1723}
1724
1725static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1726{
1727 struct inet6_dev *in_dev;
1728 struct vlan_group *vg;
1729 int i;
1730
1731 QETH_DBF_TEXT(trace, 4, "admc6vl");
1732 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1733 return;
1734
1735 vg = card->vlangrp;
1736 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1737 struct net_device *netdev = vlan_group_get_device(vg, i);
1738 if (netdev == NULL ||
1739 !(netdev->flags & IFF_UP))
1740 continue;
1741 in_dev = in6_dev_get(netdev);
1742 if (!in_dev)
1743 continue;
1744 read_lock_bh(&in_dev->lock);
1745 qeth_l3_add_mc6(card, in_dev);
1746 read_unlock_bh(&in_dev->lock);
1747 in6_dev_put(in_dev);
1748 }
1749}
1750
1751static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1752{
1753 struct inet6_dev *in6_dev;
1754
1755 QETH_DBF_TEXT(trace, 4, "chkmcv6");
1756 if (!qeth_is_supported(card, IPA_IPV6))
1757 return ;
1758 in6_dev = in6_dev_get(card->dev);
1759 if (in6_dev == NULL)
1760 return;
1761 read_lock_bh(&in6_dev->lock);
1762 qeth_l3_add_mc6(card, in6_dev);
1763 qeth_l3_add_vlan_mc6(card);
1764 read_unlock_bh(&in6_dev->lock);
1765 in6_dev_put(in6_dev);
1766}
1767#endif /* CONFIG_QETH_IPV6 */
1768
1769static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1770 unsigned short vid)
1771{
1772 struct in_device *in_dev;
1773 struct in_ifaddr *ifa;
1774 struct qeth_ipaddr *addr;
1775
1776 QETH_DBF_TEXT(trace, 4, "frvaddr4");
1777
1778 in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1779 if (!in_dev)
1780 return;
1781 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1782 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1783 if (addr) {
1784 addr->u.a4.addr = ifa->ifa_address;
1785 addr->u.a4.mask = ifa->ifa_mask;
1786 addr->type = QETH_IP_TYPE_NORMAL;
1787 if (!qeth_l3_delete_ip(card, addr))
1788 kfree(addr);
1789 }
1790 }
1791 in_dev_put(in_dev);
1792}
1793
1794static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1795 unsigned short vid)
1796{
1797#ifdef CONFIG_QETH_IPV6
1798 struct inet6_dev *in6_dev;
1799 struct inet6_ifaddr *ifa;
1800 struct qeth_ipaddr *addr;
1801
1802 QETH_DBF_TEXT(trace, 4, "frvaddr6");
1803
1804 in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1805 if (!in6_dev)
1806 return;
1807 for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1808 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1809 if (addr) {
1810 memcpy(&addr->u.a6.addr, &ifa->addr,
1811 sizeof(struct in6_addr));
1812 addr->u.a6.pfxlen = ifa->prefix_len;
1813 addr->type = QETH_IP_TYPE_NORMAL;
1814 if (!qeth_l3_delete_ip(card, addr))
1815 kfree(addr);
1816 }
1817 }
1818 in6_dev_put(in6_dev);
1819#endif /* CONFIG_QETH_IPV6 */
1820}
1821
1822static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1823 unsigned short vid)
1824{
1825 if (!card->vlangrp)
1826 return;
1827 qeth_l3_free_vlan_addresses4(card, vid);
1828 qeth_l3_free_vlan_addresses6(card, vid);
1829}
1830
1831static void qeth_l3_vlan_rx_register(struct net_device *dev,
1832 struct vlan_group *grp)
1833{
1834 struct qeth_card *card = netdev_priv(dev);
1835 unsigned long flags;
1836
1837 QETH_DBF_TEXT(trace, 4, "vlanreg");
1838 spin_lock_irqsave(&card->vlanlock, flags);
1839 card->vlangrp = grp;
1840 spin_unlock_irqrestore(&card->vlanlock, flags);
1841}
1842
1843static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1844{
1845 struct net_device *vlandev;
1846 struct qeth_card *card = (struct qeth_card *) dev->priv;
1847 struct in_device *in_dev;
1848
1849 if (card->info.type == QETH_CARD_TYPE_IQD)
1850 return;
1851
1852 vlandev = vlan_group_get_device(card->vlangrp, vid);
1853 vlandev->neigh_setup = qeth_l3_neigh_setup;
1854
1855 in_dev = in_dev_get(vlandev);
1856#ifdef CONFIG_SYSCTL
1857 neigh_sysctl_unregister(in_dev->arp_parms);
1858#endif
1859 neigh_parms_release(&arp_tbl, in_dev->arp_parms);
1860
1861 in_dev->arp_parms = neigh_parms_alloc(vlandev, &arp_tbl);
1862#ifdef CONFIG_SYSCTL
1863 neigh_sysctl_register(vlandev, in_dev->arp_parms, NET_IPV4,
1864 NET_IPV4_NEIGH, "ipv4", NULL, NULL);
1865#endif
1866 in_dev_put(in_dev);
1867 return;
1868}
1869
1870static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1871{
1872 struct qeth_card *card = netdev_priv(dev);
1873 unsigned long flags;
1874
1875 QETH_DBF_TEXT_(trace, 4, "kid:%d", vid);
1876 spin_lock_irqsave(&card->vlanlock, flags);
1877 /* unregister IP addresses of vlan device */
1878 qeth_l3_free_vlan_addresses(card, vid);
1879 vlan_group_set_device(card->vlangrp, vid, NULL);
1880 spin_unlock_irqrestore(&card->vlanlock, flags);
1881 qeth_l3_set_multicast_list(card->dev);
1882}
1883
1884static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1885 struct sk_buff *skb, struct qeth_hdr *hdr)
1886{
1887 unsigned short vlan_id = 0;
1888 __be16 prot;
1889 struct iphdr *ip_hdr;
1890 unsigned char tg_addr[MAX_ADDR_LEN];
1891
1892 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1893 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1894 ETH_P_IP);
1895 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1896 case QETH_CAST_MULTICAST:
1897 switch (prot) {
1898#ifdef CONFIG_QETH_IPV6
1899 case __constant_htons(ETH_P_IPV6):
1900 ndisc_mc_map((struct in6_addr *)
1901 skb->data + 24,
1902 tg_addr, card->dev, 0);
1903 break;
1904#endif
1905 case __constant_htons(ETH_P_IP):
1906 ip_hdr = (struct iphdr *)skb->data;
1907 (card->dev->type == ARPHRD_IEEE802_TR) ?
1908 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1909 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1910 break;
1911 default:
1912 memcpy(tg_addr, card->dev->broadcast,
1913 card->dev->addr_len);
1914 }
1915 card->stats.multicast++;
1916 skb->pkt_type = PACKET_MULTICAST;
1917 break;
1918 case QETH_CAST_BROADCAST:
1919 memcpy(tg_addr, card->dev->broadcast,
1920 card->dev->addr_len);
1921 card->stats.multicast++;
1922 skb->pkt_type = PACKET_BROADCAST;
1923 break;
1924 case QETH_CAST_UNICAST:
1925 case QETH_CAST_ANYCAST:
1926 case QETH_CAST_NOCAST:
1927 default:
1928 skb->pkt_type = PACKET_HOST;
1929 memcpy(tg_addr, card->dev->dev_addr,
1930 card->dev->addr_len);
1931 }
1932 card->dev->header_ops->create(skb, card->dev, prot, tg_addr,
1933 "FAKELL", card->dev->addr_len);
1934 }
1935
1936#ifdef CONFIG_TR
1937 if (card->dev->type == ARPHRD_IEEE802_TR)
1938 skb->protocol = tr_type_trans(skb, card->dev);
1939 else
1940#endif
1941 skb->protocol = eth_type_trans(skb, card->dev);
1942
1943 if (hdr->hdr.l3.ext_flags &
1944 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1945 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1946 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1947 }
1948
1949 skb->ip_summed = card->options.checksum_type;
1950 if (card->options.checksum_type == HW_CHECKSUMMING) {
1951 if ((hdr->hdr.l3.ext_flags &
1952 (QETH_HDR_EXT_CSUM_HDR_REQ |
1953 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1954 (QETH_HDR_EXT_CSUM_HDR_REQ |
1955 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1956 skb->ip_summed = CHECKSUM_UNNECESSARY;
1957 else
1958 skb->ip_summed = SW_CHECKSUMMING;
1959 }
1960
1961 return vlan_id;
1962}
1963
1964static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
1965 struct qeth_qdio_buffer *buf, int index)
1966{
1967 struct qdio_buffer_element *element;
1968 struct sk_buff *skb;
1969 struct qeth_hdr *hdr;
1970 int offset;
1971 __u16 vlan_tag = 0;
1972 unsigned int len;
1973
1974 /* get first element of current buffer */
1975 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
1976 offset = 0;
1977 if (card->options.performance_stats)
1978 card->perf_stats.bufs_rec++;
1979 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
1980 &offset, &hdr))) {
1981 skb->dev = card->dev;
1982 /* is device UP ? */
1983 if (!(card->dev->flags & IFF_UP)) {
1984 dev_kfree_skb_any(skb);
1985 continue;
1986 }
1987
1988 switch (hdr->hdr.l3.id) {
1989 case QETH_HEADER_TYPE_LAYER3:
1990 vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
1991 len = skb->len;
1992 if (vlan_tag)
1993 if (card->vlangrp)
1994 vlan_hwaccel_rx(skb, card->vlangrp,
1995 vlan_tag);
1996 else {
1997 dev_kfree_skb_any(skb);
1998 continue;
1999 }
2000 else
2001 netif_rx(skb);
2002 break;
2003 default:
2004 dev_kfree_skb_any(skb);
2005 QETH_DBF_TEXT(trace, 3, "inbunkno");
2006 QETH_DBF_HEX(control, 3, hdr, QETH_DBF_CONTROL_LEN);
2007 continue;
2008 }
2009
2010 card->dev->last_rx = jiffies;
2011 card->stats.rx_packets++;
2012 card->stats.rx_bytes += len;
2013 }
2014}
2015
2016static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2017 struct qeth_card *card)
2018{
2019 int rc = 0;
2020 struct vlan_group *vg;
2021 int i;
2022
2023 vg = card->vlangrp;
2024 if (!vg)
2025 return rc;
2026
2027 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2028 if (vlan_group_get_device(vg, i) == dev) {
2029 rc = QETH_VLAN_CARD;
2030 break;
2031 }
2032 }
2033
2034 if (rc && !(netdev_priv(vlan_dev_info(dev)->real_dev) == (void *)card))
2035 return 0;
2036
2037 return rc;
2038}
2039
2040static int qeth_l3_verify_dev(struct net_device *dev)
2041{
2042 struct qeth_card *card;
2043 unsigned long flags;
2044 int rc = 0;
2045
2046 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2047 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2048 if (card->dev == dev) {
2049 rc = QETH_REAL_CARD;
2050 break;
2051 }
2052 rc = qeth_l3_verify_vlan_dev(dev, card);
2053 if (rc)
2054 break;
2055 }
2056 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2057
2058 return rc;
2059}
2060
2061static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2062{
2063 struct qeth_card *card = NULL;
2064 int rc;
2065
2066 rc = qeth_l3_verify_dev(dev);
2067 if (rc == QETH_REAL_CARD)
2068 card = netdev_priv(dev);
2069 else if (rc == QETH_VLAN_CARD)
2070 card = netdev_priv(vlan_dev_info(dev)->real_dev);
2071 if (card->options.layer2)
2072 card = NULL;
2073 QETH_DBF_TEXT_(trace, 4, "%d", rc);
2074 return card ;
2075}
2076
2077static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2078{
2079 int rc = 0;
2080
2081 QETH_DBF_TEXT(setup, 2, "stopcard");
2082 QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
2083
2084 qeth_set_allowed_threads(card, 0, 1);
2085 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
2086 return -ERESTARTSYS;
2087 if (card->read.state == CH_STATE_UP &&
2088 card->write.state == CH_STATE_UP &&
2089 (card->state == CARD_STATE_UP)) {
2090 if (recovery_mode)
2091 qeth_l3_stop(card->dev);
2092 if (!card->use_hard_stop) {
2093 rc = qeth_send_stoplan(card);
2094 if (rc)
2095 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
2096 }
2097 card->state = CARD_STATE_SOFTSETUP;
2098 }
2099 if (card->state == CARD_STATE_SOFTSETUP) {
2100 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2101 qeth_clear_ipacmd_list(card);
2102 card->state = CARD_STATE_HARDSETUP;
2103 }
2104 if (card->state == CARD_STATE_HARDSETUP) {
2105 if (!card->use_hard_stop &&
2106 (card->info.type != QETH_CARD_TYPE_IQD)) {
2107 rc = qeth_l3_put_unique_id(card);
2108 if (rc)
2109 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
2110 }
2111 qeth_qdio_clear_card(card, 0);
2112 qeth_clear_qdio_buffers(card);
2113 qeth_clear_working_pool_list(card);
2114 card->state = CARD_STATE_DOWN;
2115 }
2116 if (card->state == CARD_STATE_DOWN) {
2117 qeth_clear_cmd_buffers(&card->read);
2118 qeth_clear_cmd_buffers(&card->write);
2119 }
2120 card->use_hard_stop = 0;
2121 return rc;
2122}
2123
2124static void qeth_l3_set_multicast_list(struct net_device *dev)
2125{
2126 struct qeth_card *card = netdev_priv(dev);
2127
2128 QETH_DBF_TEXT(trace, 3, "setmulti");
2129 qeth_l3_delete_mc_addresses(card);
2130 qeth_l3_add_multicast_ipv4(card);
2131#ifdef CONFIG_QETH_IPV6
2132 qeth_l3_add_multicast_ipv6(card);
2133#endif
2134 qeth_l3_set_ip_addr_list(card);
2135 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2136 return;
2137 qeth_setadp_promisc_mode(card);
2138}
2139
2140static const char *qeth_l3_arp_get_error_cause(int *rc)
2141{
2142 switch (*rc) {
2143 case QETH_IPA_ARP_RC_FAILED:
2144 *rc = -EIO;
2145 return "operation failed";
2146 case QETH_IPA_ARP_RC_NOTSUPP:
2147 *rc = -EOPNOTSUPP;
2148 return "operation not supported";
2149 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2150 *rc = -EINVAL;
2151 return "argument out of range";
2152 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2153 *rc = -EOPNOTSUPP;
2154 return "query operation not supported";
2155 case QETH_IPA_ARP_RC_Q_NO_DATA:
2156 *rc = -ENOENT;
2157 return "no query data available";
2158 default:
2159 return "unknown error";
2160 }
2161}
2162
2163static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2164{
2165 int tmp;
2166 int rc;
2167
2168 QETH_DBF_TEXT(trace, 3, "arpstnoe");
2169
2170 /*
2171 * currently GuestLAN only supports the ARP assist function
2172 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2173 * thus we say EOPNOTSUPP for this ARP function
2174 */
2175 if (card->info.guestlan)
2176 return -EOPNOTSUPP;
2177 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2178 PRINT_WARN("ARP processing not supported "
2179 "on %s!\n", QETH_CARD_IFNAME(card));
2180 return -EOPNOTSUPP;
2181 }
2182 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2183 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2184 no_entries);
2185 if (rc) {
2186 tmp = rc;
2187 PRINT_WARN("Could not set number of ARP entries on %s: "
2188 "%s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2189 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2190 }
2191 return rc;
2192}
2193
2194static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2195 struct qeth_arp_query_data *qdata, int entry_size,
2196 int uentry_size)
2197{
2198 char *entry_ptr;
2199 char *uentry_ptr;
2200 int i;
2201
2202 entry_ptr = (char *)&qdata->data;
2203 uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2204 for (i = 0; i < qdata->no_entries; ++i) {
2205 /* strip off 32 bytes "media specific information" */
2206 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2207 entry_ptr += entry_size;
2208 uentry_ptr += uentry_size;
2209 }
2210}
2211
2212static int qeth_l3_arp_query_cb(struct qeth_card *card,
2213 struct qeth_reply *reply, unsigned long data)
2214{
2215 struct qeth_ipa_cmd *cmd;
2216 struct qeth_arp_query_data *qdata;
2217 struct qeth_arp_query_info *qinfo;
2218 int entry_size;
2219 int uentry_size;
2220 int i;
2221
2222 QETH_DBF_TEXT(trace, 4, "arpquecb");
2223
2224 qinfo = (struct qeth_arp_query_info *) reply->param;
2225 cmd = (struct qeth_ipa_cmd *) data;
2226 if (cmd->hdr.return_code) {
2227 QETH_DBF_TEXT_(trace, 4, "qaer1%i", cmd->hdr.return_code);
2228 return 0;
2229 }
2230 if (cmd->data.setassparms.hdr.return_code) {
2231 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2232 QETH_DBF_TEXT_(trace, 4, "qaer2%i", cmd->hdr.return_code);
2233 return 0;
2234 }
2235 qdata = &cmd->data.setassparms.data.query_arp;
2236 switch (qdata->reply_bits) {
2237 case 5:
2238 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2239 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2240 uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2241 break;
2242 case 7:
2243 /* fall through to default */
2244 default:
2245 /* tr is the same as eth -> entry7 */
2246 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2247 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2248 uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2249 break;
2250 }
2251 /* check if there is enough room in userspace */
2252 if ((qinfo->udata_len - qinfo->udata_offset) <
2253 qdata->no_entries * uentry_size){
2254 QETH_DBF_TEXT_(trace, 4, "qaer3%i", -ENOMEM);
2255 cmd->hdr.return_code = -ENOMEM;
2256 PRINT_WARN("query ARP user space buffer is too small for "
2257 "the returned number of ARP entries. "
2258 "Aborting query!\n");
2259 goto out_error;
2260 }
2261 QETH_DBF_TEXT_(trace, 4, "anore%i",
2262 cmd->data.setassparms.hdr.number_of_replies);
2263 QETH_DBF_TEXT_(trace, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2264 QETH_DBF_TEXT_(trace, 4, "anoen%i", qdata->no_entries);
2265
2266 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2267 /* strip off "media specific information" */
2268 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2269 uentry_size);
2270 } else
2271 /*copy entries to user buffer*/
2272 memcpy(qinfo->udata + qinfo->udata_offset,
2273 (char *)&qdata->data, qdata->no_entries*uentry_size);
2274
2275 qinfo->no_entries += qdata->no_entries;
2276 qinfo->udata_offset += (qdata->no_entries*uentry_size);
2277 /* check if all replies received ... */
2278 if (cmd->data.setassparms.hdr.seq_no <
2279 cmd->data.setassparms.hdr.number_of_replies)
2280 return 1;
2281 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2282 /* keep STRIP_ENTRIES flag so the user program can distinguish
2283 * stripped entries from normal ones */
2284 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2285 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2286 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2287 return 0;
2288out_error:
2289 i = 0;
2290 memcpy(qinfo->udata, &i, 4);
2291 return 0;
2292}
2293
2294static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2295 struct qeth_cmd_buffer *iob, int len,
2296 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2297 unsigned long),
2298 void *reply_param)
2299{
2300 QETH_DBF_TEXT(trace, 4, "sendarp");
2301
2302 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2303 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2304 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2305 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2306 reply_cb, reply_param);
2307}
2308
2309static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2310{
2311 struct qeth_cmd_buffer *iob;
2312 struct qeth_arp_query_info qinfo = {0, };
2313 int tmp;
2314 int rc;
2315
2316 QETH_DBF_TEXT(trace, 3, "arpquery");
2317
2318 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2319 IPA_ARP_PROCESSING)) {
2320 PRINT_WARN("ARP processing not supported "
2321 "on %s!\n", QETH_CARD_IFNAME(card));
2322 return -EOPNOTSUPP;
2323 }
2324 /* get size of userspace buffer and mask_bits -> 6 bytes */
2325 if (copy_from_user(&qinfo, udata, 6))
2326 return -EFAULT;
2327 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2328 if (!qinfo.udata)
2329 return -ENOMEM;
2330 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2331 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2332 IPA_CMD_ASS_ARP_QUERY_INFO,
2333 sizeof(int), QETH_PROT_IPV4);
2334
2335 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2336 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2337 qeth_l3_arp_query_cb, (void *)&qinfo);
2338 if (rc) {
2339 tmp = rc;
2340 PRINT_WARN("Error while querying ARP cache on %s: %s "
2341 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2342 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2343 if (copy_to_user(udata, qinfo.udata, 4))
2344 rc = -EFAULT;
2345 } else {
2346 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2347 rc = -EFAULT;
2348 }
2349 kfree(qinfo.udata);
2350 return rc;
2351}
2352
2353static int qeth_l3_arp_add_entry(struct qeth_card *card,
2354 struct qeth_arp_cache_entry *entry)
2355{
2356 struct qeth_cmd_buffer *iob;
2357 char buf[16];
2358 int tmp;
2359 int rc;
2360
2361 QETH_DBF_TEXT(trace, 3, "arpadent");
2362
2363 /*
2364 * currently GuestLAN only supports the ARP assist function
2365 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2366 * thus we say EOPNOTSUPP for this ARP function
2367 */
2368 if (card->info.guestlan)
2369 return -EOPNOTSUPP;
2370 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2371 PRINT_WARN("ARP processing not supported "
2372 "on %s!\n", QETH_CARD_IFNAME(card));
2373 return -EOPNOTSUPP;
2374 }
2375
2376 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2377 IPA_CMD_ASS_ARP_ADD_ENTRY,
2378 sizeof(struct qeth_arp_cache_entry),
2379 QETH_PROT_IPV4);
2380 rc = qeth_l3_send_setassparms(card, iob,
2381 sizeof(struct qeth_arp_cache_entry),
2382 (unsigned long) entry,
2383 qeth_l3_default_setassparms_cb, NULL);
2384 if (rc) {
2385 tmp = rc;
2386 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2387 PRINT_WARN("Could not add ARP entry for address %s on %s: "
2388 "%s (0x%x/%d)\n",
2389 buf, QETH_CARD_IFNAME(card),
2390 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2391 }
2392 return rc;
2393}
2394
2395static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2396 struct qeth_arp_cache_entry *entry)
2397{
2398 struct qeth_cmd_buffer *iob;
2399 char buf[16] = {0, };
2400 int tmp;
2401 int rc;
2402
2403 QETH_DBF_TEXT(trace, 3, "arprment");
2404
2405 /*
2406 * currently GuestLAN only supports the ARP assist function
2407 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2408 * thus we say EOPNOTSUPP for this ARP function
2409 */
2410 if (card->info.guestlan)
2411 return -EOPNOTSUPP;
2412 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2413 PRINT_WARN("ARP processing not supported "
2414 "on %s!\n", QETH_CARD_IFNAME(card));
2415 return -EOPNOTSUPP;
2416 }
2417 memcpy(buf, entry, 12);
2418 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2419 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2420 12,
2421 QETH_PROT_IPV4);
2422 rc = qeth_l3_send_setassparms(card, iob,
2423 12, (unsigned long)buf,
2424 qeth_l3_default_setassparms_cb, NULL);
2425 if (rc) {
2426 tmp = rc;
2427 memset(buf, 0, 16);
2428 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2429 PRINT_WARN("Could not delete ARP entry for address %s on %s: "
2430 "%s (0x%x/%d)\n",
2431 buf, QETH_CARD_IFNAME(card),
2432 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2433 }
2434 return rc;
2435}
2436
2437static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2438{
2439 int rc;
2440 int tmp;
2441
2442 QETH_DBF_TEXT(trace, 3, "arpflush");
2443
2444 /*
2445 * currently GuestLAN only supports the ARP assist function
2446 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2447 * thus we say EOPNOTSUPP for this ARP function
2448 */
2449 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2450 return -EOPNOTSUPP;
2451 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2452 PRINT_WARN("ARP processing not supported "
2453 "on %s!\n", QETH_CARD_IFNAME(card));
2454 return -EOPNOTSUPP;
2455 }
2456 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2457 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2458 if (rc) {
2459 tmp = rc;
2460 PRINT_WARN("Could not flush ARP cache on %s: %s (0x%x/%d)\n",
2461 QETH_CARD_IFNAME(card),
2462 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2463 }
2464 return rc;
2465}
2466
2467static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2468{
2469 struct qeth_card *card = netdev_priv(dev);
2470 struct qeth_arp_cache_entry arp_entry;
2471 struct mii_ioctl_data *mii_data;
2472 int rc = 0;
2473
2474 if (!card)
2475 return -ENODEV;
2476
2477 if ((card->state != CARD_STATE_UP) &&
2478 (card->state != CARD_STATE_SOFTSETUP))
2479 return -ENODEV;
2480
2481 switch (cmd) {
2482 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2483 if (!capable(CAP_NET_ADMIN)) {
2484 rc = -EPERM;
2485 break;
2486 }
2487 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2488 break;
2489 case SIOC_QETH_ARP_QUERY_INFO:
2490 if (!capable(CAP_NET_ADMIN)) {
2491 rc = -EPERM;
2492 break;
2493 }
2494 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2495 break;
2496 case SIOC_QETH_ARP_ADD_ENTRY:
2497 if (!capable(CAP_NET_ADMIN)) {
2498 rc = -EPERM;
2499 break;
2500 }
2501 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2502 sizeof(struct qeth_arp_cache_entry)))
2503 rc = -EFAULT;
2504 else
2505 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2506 break;
2507 case SIOC_QETH_ARP_REMOVE_ENTRY:
2508 if (!capable(CAP_NET_ADMIN)) {
2509 rc = -EPERM;
2510 break;
2511 }
2512 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2513 sizeof(struct qeth_arp_cache_entry)))
2514 rc = -EFAULT;
2515 else
2516 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2517 break;
2518 case SIOC_QETH_ARP_FLUSH_CACHE:
2519 if (!capable(CAP_NET_ADMIN)) {
2520 rc = -EPERM;
2521 break;
2522 }
2523 rc = qeth_l3_arp_flush_cache(card);
2524 break;
2525 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2526 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2527 break;
2528 case SIOC_QETH_GET_CARD_TYPE:
2529 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2530 !card->info.guestlan)
2531 return 1;
2532 return 0;
2533 break;
2534 case SIOCGMIIPHY:
2535 mii_data = if_mii(rq);
2536 mii_data->phy_id = 0;
2537 break;
2538 case SIOCGMIIREG:
2539 mii_data = if_mii(rq);
2540 if (mii_data->phy_id != 0)
2541 rc = -EINVAL;
2542 else
2543 mii_data->val_out = qeth_mdio_read(dev,
2544 mii_data->phy_id,
2545 mii_data->reg_num);
2546 break;
2547 default:
2548 rc = -EOPNOTSUPP;
2549 }
2550 if (rc)
2551 QETH_DBF_TEXT_(trace, 2, "ioce%d", rc);
2552 return rc;
2553}
2554
2555static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2556 struct sk_buff *skb, int ipv, int cast_type)
2557{
2558 QETH_DBF_TEXT(trace, 6, "fillhdr");
2559
2560 memset(hdr, 0, sizeof(struct qeth_hdr));
2561 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2562 hdr->hdr.l3.ext_flags = 0;
2563
2564 /*
2565 * before we're going to overwrite this location with next hop ip.
2566 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2567 */
2568 if (card->vlangrp && vlan_tx_tag_present(skb)) {
2569 hdr->hdr.l3.ext_flags = (ipv == 4) ?
2570 QETH_HDR_EXT_VLAN_FRAME :
2571 QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2572 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2573 }
2574
2575 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2576 if (ipv == 4) {
2577 /* IPv4 */
2578 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2579 memset(hdr->hdr.l3.dest_addr, 0, 12);
2580 if ((skb->dst) && (skb->dst->neighbour)) {
2581 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2582 *((u32 *) skb->dst->neighbour->primary_key);
2583 } else {
2584 /* fill in destination address used in ip header */
2585 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2586 ip_hdr(skb)->daddr;
2587 }
2588 } else if (ipv == 6) {
2589 /* IPv6 */
2590 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2591 if (card->info.type == QETH_CARD_TYPE_IQD)
2592 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2593 if ((skb->dst) && (skb->dst->neighbour)) {
2594 memcpy(hdr->hdr.l3.dest_addr,
2595 skb->dst->neighbour->primary_key, 16);
2596 } else {
2597 /* fill in destination address used in ip header */
2598 memcpy(hdr->hdr.l3.dest_addr,
2599 &ipv6_hdr(skb)->daddr, 16);
2600 }
2601 } else {
2602 /* passthrough */
2603 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2604 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2605 sizeof(__u16), skb->dev->broadcast, 6)) {
2606 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2607 QETH_HDR_PASSTHRU;
2608 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2609 skb->dev->broadcast, 6)) {
2610 /* broadcast? */
2611 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2612 QETH_HDR_PASSTHRU;
2613 } else {
2614 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2615 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2616 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2617 }
2618 }
2619}
2620
2621static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2622{
2623 int rc;
2624 u16 *tag;
2625 struct qeth_hdr *hdr = NULL;
2626 int elements_needed = 0;
2627 struct qeth_card *card = netdev_priv(dev);
2628 struct sk_buff *new_skb = NULL;
2629 int ipv = qeth_get_ip_version(skb);
2630 int cast_type = qeth_get_cast_type(card, skb);
2631 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2632 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2633 int tx_bytes = skb->len;
2634 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2635 struct qeth_eddp_context *ctx = NULL;
2636
2637 QETH_DBF_TEXT(trace, 6, "l3xmit");
2638
2639 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2640 (skb->protocol != htons(ETH_P_IPV6)) &&
2641 (skb->protocol != htons(ETH_P_IP)))
2642 goto tx_drop;
2643
2644 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2645 card->stats.tx_carrier_errors++;
2646 goto tx_drop;
2647 }
2648
2649 if ((cast_type == RTN_BROADCAST) &&
2650 (card->info.broadcast_capable == 0))
2651 goto tx_drop;
2652
2653 if (card->options.performance_stats) {
2654 card->perf_stats.outbound_cnt++;
2655 card->perf_stats.outbound_start_time = qeth_get_micros();
2656 }
2657
2658 /* create a clone with writeable headroom */
2659 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) +
2660 VLAN_HLEN);
2661 if (!new_skb)
2662 goto tx_drop;
2663
2664 if (card->info.type == QETH_CARD_TYPE_IQD) {
2665 skb_pull(new_skb, ETH_HLEN);
2666 } else {
2667 if (new_skb->protocol == htons(ETH_P_IP)) {
2668 if (card->dev->type == ARPHRD_IEEE802_TR)
2669 skb_pull(new_skb, TR_HLEN);
2670 else
2671 skb_pull(new_skb, ETH_HLEN);
2672 }
2673
2674 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2675 vlan_tx_tag_present(new_skb)) {
2676 skb_push(new_skb, VLAN_HLEN);
2677 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2678 skb_copy_to_linear_data_offset(new_skb, 4,
2679 new_skb->data + 8, 4);
2680 skb_copy_to_linear_data_offset(new_skb, 8,
2681 new_skb->data + 12, 4);
2682 tag = (u16 *)(new_skb->data + 12);
2683 *tag = __constant_htons(ETH_P_8021Q);
2684 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2685 VLAN_TX_SKB_CB(new_skb)->magic = 0;
2686 }
2687 }
2688
2689 netif_stop_queue(dev);
2690
2691 if (skb_is_gso(new_skb))
2692 large_send = card->options.large_send;
2693
2694 /* fix hardware limitation: as long as we do not have sbal
2695 * chaining we can not send long frag lists so we temporary
2696 * switch to EDDP
2697 */
2698 if ((large_send == QETH_LARGE_SEND_TSO) &&
2699 ((skb_shinfo(new_skb)->nr_frags + 2) > 16))
2700 large_send = QETH_LARGE_SEND_EDDP;
2701
2702 if ((large_send == QETH_LARGE_SEND_TSO) &&
2703 (cast_type == RTN_UNSPEC)) {
2704 hdr = (struct qeth_hdr *)skb_push(new_skb,
2705 sizeof(struct qeth_hdr_tso));
2706 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2707 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2708 qeth_tso_fill_header(card, hdr, new_skb);
2709 elements_needed++;
2710 } else {
2711 hdr = (struct qeth_hdr *)skb_push(new_skb,
2712 sizeof(struct qeth_hdr));
2713 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2714 }
2715
2716 if (large_send == QETH_LARGE_SEND_EDDP) {
2717 /* new_skb is not owned by a socket so we use skb to get
2718 * the protocol
2719 */
2720 ctx = qeth_eddp_create_context(card, new_skb, hdr,
2721 skb->sk->sk_protocol);
2722 if (ctx == NULL) {
2723 PRINT_WARN("could not create eddp context\n");
2724 goto tx_drop;
2725 }
2726 } else {
2727 int elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2728 elements_needed);
2729 if (!elems)
2730 goto tx_drop;
2731 elements_needed += elems;
2732 }
2733
2734 if ((large_send == QETH_LARGE_SEND_NO) &&
2735 (new_skb->ip_summed == CHECKSUM_PARTIAL))
2736 qeth_tx_csum(new_skb);
2737
2738 if (card->info.type != QETH_CARD_TYPE_IQD)
2739 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2740 elements_needed, ctx);
2741 else
2742 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2743 elements_needed, ctx);
2744
2745 if (!rc) {
2746 card->stats.tx_packets++;
2747 card->stats.tx_bytes += tx_bytes;
2748 if (new_skb != skb)
2749 dev_kfree_skb_any(skb);
2750 if (card->options.performance_stats) {
2751 if (large_send != QETH_LARGE_SEND_NO) {
2752 card->perf_stats.large_send_bytes += tx_bytes;
2753 card->perf_stats.large_send_cnt++;
2754 }
2755 if (skb_shinfo(new_skb)->nr_frags > 0) {
2756 card->perf_stats.sg_skbs_sent++;
2757 /* nr_frags + skb->data */
2758 card->perf_stats.sg_frags_sent +=
2759 skb_shinfo(new_skb)->nr_frags + 1;
2760 }
2761 }
2762
2763 if (ctx != NULL) {
2764 qeth_eddp_put_context(ctx);
2765 dev_kfree_skb_any(new_skb);
2766 }
2767 } else {
2768 if (ctx != NULL)
2769 qeth_eddp_put_context(ctx);
2770
2771 if (rc == -EBUSY) {
2772 if (new_skb != skb)
2773 dev_kfree_skb_any(new_skb);
2774 return NETDEV_TX_BUSY;
2775 } else
2776 goto tx_drop;
2777 }
2778
2779 netif_wake_queue(dev);
2780 if (card->options.performance_stats)
2781 card->perf_stats.outbound_time += qeth_get_micros() -
2782 card->perf_stats.outbound_start_time;
2783 return rc;
2784
2785tx_drop:
2786 card->stats.tx_dropped++;
2787 card->stats.tx_errors++;
2788 if ((new_skb != skb) && new_skb)
2789 dev_kfree_skb_any(new_skb);
2790 dev_kfree_skb_any(skb);
2791 return NETDEV_TX_OK;
2792}
2793
2794static int qeth_l3_open(struct net_device *dev)
2795{
2796 struct qeth_card *card = netdev_priv(dev);
2797
2798 QETH_DBF_TEXT(trace, 4, "qethopen");
2799 if (card->state != CARD_STATE_SOFTSETUP)
2800 return -ENODEV;
2801 card->data.state = CH_STATE_UP;
2802 card->state = CARD_STATE_UP;
2803 card->dev->flags |= IFF_UP;
2804 netif_start_queue(dev);
2805
2806 if (!card->lan_online && netif_carrier_ok(dev))
2807 netif_carrier_off(dev);
2808 return 0;
2809}
2810
2811static int qeth_l3_stop(struct net_device *dev)
2812{
2813 struct qeth_card *card = netdev_priv(dev);
2814
2815 QETH_DBF_TEXT(trace, 4, "qethstop");
2816 netif_tx_disable(dev);
2817 card->dev->flags &= ~IFF_UP;
2818 if (card->state == CARD_STATE_UP)
2819 card->state = CARD_STATE_SOFTSETUP;
2820 return 0;
2821}
2822
2823static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2824{
2825 struct qeth_card *card = netdev_priv(dev);
2826
2827 return (card->options.checksum_type == HW_CHECKSUMMING);
2828}
2829
2830static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2831{
2832 struct qeth_card *card = netdev_priv(dev);
2833 enum qeth_card_states old_state;
2834 enum qeth_checksum_types csum_type;
2835
2836 if ((card->state != CARD_STATE_UP) &&
2837 (card->state != CARD_STATE_DOWN))
2838 return -EPERM;
2839
2840 if (data)
2841 csum_type = HW_CHECKSUMMING;
2842 else
2843 csum_type = SW_CHECKSUMMING;
2844
2845 if (card->options.checksum_type != csum_type) {
2846 old_state = card->state;
2847 if (card->state == CARD_STATE_UP)
2848 __qeth_l3_set_offline(card->gdev, 1);
2849 card->options.checksum_type = csum_type;
2850 if (old_state == CARD_STATE_UP)
2851 __qeth_l3_set_online(card->gdev, 1);
2852 }
2853 return 0;
2854}
2855
2856static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2857{
2858 struct qeth_card *card = netdev_priv(dev);
2859
2860 if (data) {
2861 if (card->options.large_send == QETH_LARGE_SEND_NO) {
2862 if (card->info.type == QETH_CARD_TYPE_IQD)
2863 card->options.large_send = QETH_LARGE_SEND_EDDP;
2864 else
2865 card->options.large_send = QETH_LARGE_SEND_TSO;
2866 dev->features |= NETIF_F_TSO;
2867 }
2868 } else {
2869 dev->features &= ~NETIF_F_TSO;
2870 card->options.large_send = QETH_LARGE_SEND_NO;
2871 }
2872 return 0;
2873}
2874
2875static struct ethtool_ops qeth_l3_ethtool_ops = {
2876 .get_link = ethtool_op_get_link,
2877 .get_tx_csum = ethtool_op_get_tx_csum,
2878 .set_tx_csum = ethtool_op_set_tx_hw_csum,
2879 .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
2880 .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
2881 .get_sg = ethtool_op_get_sg,
2882 .set_sg = ethtool_op_set_sg,
2883 .get_tso = ethtool_op_get_tso,
2884 .set_tso = qeth_l3_ethtool_set_tso,
2885 .get_strings = qeth_core_get_strings,
2886 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2887 .get_stats_count = qeth_core_get_stats_count,
2888 .get_drvinfo = qeth_core_get_drvinfo,
2889};
2890
2891/*
2892 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2893 * NOARP on the netdevice is no option because it also turns off neighbor
2894 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2895 * arp resolution but we want the hard header (packet socket will work
2896 * e.g. tcpdump)
2897 */
2898static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2899{
2900 n->nud_state = NUD_NOARP;
2901 memcpy(n->ha, "FAKELL", 6);
2902 n->output = n->ops->connected_output;
2903 return 0;
2904}
2905
2906static int
2907qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2908{
2909 if (np->tbl->family == AF_INET)
2910 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2911
2912 return 0;
2913}
2914
2915static int qeth_l3_setup_netdev(struct qeth_card *card)
2916{
2917 if (card->info.type == QETH_CARD_TYPE_OSAE) {
2918 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2919 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2920#ifdef CONFIG_TR
2921 card->dev = alloc_trdev(0);
2922#endif
2923 if (!card->dev)
2924 return -ENODEV;
2925 } else {
2926 card->dev = alloc_etherdev(0);
2927 if (!card->dev)
2928 return -ENODEV;
2929 card->dev->neigh_setup = qeth_l3_neigh_setup;
2930
2931 /*IPv6 address autoconfiguration stuff*/
2932 qeth_l3_get_unique_id(card);
2933 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2934 card->dev->dev_id = card->info.unique_id &
2935 0xffff;
2936 }
2937 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2938 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
2939 if (!card->dev)
2940 return -ENODEV;
2941 card->dev->flags |= IFF_NOARP;
2942 qeth_l3_iqd_read_initial_mac(card);
2943 } else
2944 return -ENODEV;
2945
2946 card->dev->hard_start_xmit = qeth_l3_hard_start_xmit;
2947 card->dev->priv = card;
2948 card->dev->tx_timeout = &qeth_tx_timeout;
2949 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2950 card->dev->open = qeth_l3_open;
2951 card->dev->stop = qeth_l3_stop;
2952 card->dev->do_ioctl = qeth_l3_do_ioctl;
2953 card->dev->get_stats = qeth_get_stats;
2954 card->dev->change_mtu = qeth_change_mtu;
2955 card->dev->set_multicast_list = qeth_l3_set_multicast_list;
2956 card->dev->vlan_rx_register = qeth_l3_vlan_rx_register;
2957 card->dev->vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid;
2958 card->dev->vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid;
2959 card->dev->mtu = card->info.initial_mtu;
2960 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
2961 card->dev->features |= NETIF_F_HW_VLAN_TX |
2962 NETIF_F_HW_VLAN_RX |
2963 NETIF_F_HW_VLAN_FILTER;
2964
2965 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2966 return register_netdev(card->dev);
2967}
2968
2969static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
2970 unsigned int status, unsigned int qdio_err,
2971 unsigned int siga_err, unsigned int queue, int first_element,
2972 int count, unsigned long card_ptr)
2973{
2974 struct net_device *net_dev;
2975 struct qeth_card *card;
2976 struct qeth_qdio_buffer *buffer;
2977 int index;
2978 int i;
2979
2980 QETH_DBF_TEXT(trace, 6, "qdinput");
2981 card = (struct qeth_card *) card_ptr;
2982 net_dev = card->dev;
2983 if (card->options.performance_stats) {
2984 card->perf_stats.inbound_cnt++;
2985 card->perf_stats.inbound_start_time = qeth_get_micros();
2986 }
2987 if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
2988 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
2989 QETH_DBF_TEXT(trace, 1, "qdinchk");
2990 QETH_DBF_TEXT_(trace, 1, "%s", CARD_BUS_ID(card));
2991 QETH_DBF_TEXT_(trace, 1, "%04X%04X",
2992 first_element, count);
2993 QETH_DBF_TEXT_(trace, 1, "%04X%04X", queue, status);
2994 qeth_schedule_recovery(card);
2995 return;
2996 }
2997 }
2998 for (i = first_element; i < (first_element + count); ++i) {
2999 index = i % QDIO_MAX_BUFFERS_PER_Q;
3000 buffer = &card->qdio.in_q->bufs[index];
3001 if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
3002 qeth_check_qdio_errors(buffer->buffer,
3003 qdio_err, siga_err, "qinerr")))
3004 qeth_l3_process_inbound_buffer(card, buffer, index);
3005 /* clear buffer and give back to hardware */
3006 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3007 qeth_queue_input_buffer(card, index);
3008 }
3009 if (card->options.performance_stats)
3010 card->perf_stats.inbound_time += qeth_get_micros() -
3011 card->perf_stats.inbound_start_time;
3012}
3013
3014static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3015{
3016 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3017
3018 qeth_l3_create_device_attributes(&gdev->dev);
3019 card->options.layer2 = 0;
3020 card->discipline.input_handler = (qdio_handler_t *)
3021 qeth_l3_qdio_input_handler;
3022 card->discipline.output_handler = (qdio_handler_t *)
3023 qeth_qdio_output_handler;
3024 card->discipline.recover = qeth_l3_recover;
3025 return 0;
3026}
3027
3028static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3029{
3030 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3031
3032 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3033
3034 if (cgdev->state == CCWGROUP_ONLINE) {
3035 card->use_hard_stop = 1;
3036 qeth_l3_set_offline(cgdev);
3037 }
3038
3039 if (card->dev) {
3040 unregister_netdev(card->dev);
3041 card->dev = NULL;
3042 }
3043
3044 qeth_l3_remove_device_attributes(&cgdev->dev);
3045 qeth_l3_clear_ip_list(card, 0, 0);
3046 qeth_l3_clear_ipato_list(card);
3047 return;
3048}
3049
3050static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3051{
3052 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3053 int rc = 0;
3054 enum qeth_card_states recover_flag;
3055
3056 BUG_ON(!card);
3057 QETH_DBF_TEXT(setup, 2, "setonlin");
3058 QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
3059
3060 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3061 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
3062 PRINT_WARN("set_online of card %s interrupted by user!\n",
3063 CARD_BUS_ID(card));
3064 return -ERESTARTSYS;
3065 }
3066
3067 recover_flag = card->state;
3068 rc = ccw_device_set_online(CARD_RDEV(card));
3069 if (rc) {
3070 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
3071 return -EIO;
3072 }
3073 rc = ccw_device_set_online(CARD_WDEV(card));
3074 if (rc) {
3075 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
3076 return -EIO;
3077 }
3078 rc = ccw_device_set_online(CARD_DDEV(card));
3079 if (rc) {
3080 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
3081 return -EIO;
3082 }
3083
3084 rc = qeth_core_hardsetup_card(card);
3085 if (rc) {
3086 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
3087 goto out_remove;
3088 }
3089
3090 qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3091
3092 if (!card->dev && qeth_l3_setup_netdev(card))
3093 goto out_remove;
3094
3095 card->state = CARD_STATE_HARDSETUP;
3096 qeth_print_status_message(card);
3097
3098 /* softsetup */
3099 QETH_DBF_TEXT(setup, 2, "softsetp");
3100
3101 rc = qeth_send_startlan(card);
3102 if (rc) {
3103 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
3104 if (rc == 0xe080) {
3105 PRINT_WARN("LAN on card %s if offline! "
3106 "Waiting for STARTLAN from card.\n",
3107 CARD_BUS_ID(card));
3108 card->lan_online = 0;
3109 }
3110 return rc;
3111 } else
3112 card->lan_online = 1;
3113 qeth_set_large_send(card, card->options.large_send);
3114
3115 rc = qeth_l3_setadapter_parms(card);
3116 if (rc)
3117 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
3118 rc = qeth_l3_start_ipassists(card);
3119 if (rc)
3120 QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
3121 rc = qeth_l3_setrouting_v4(card);
3122 if (rc)
3123 QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
3124 rc = qeth_l3_setrouting_v6(card);
3125 if (rc)
3126 QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
3127 netif_tx_disable(card->dev);
3128
3129 rc = qeth_init_qdio_queues(card);
3130 if (rc) {
3131 QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
3132 goto out_remove;
3133 }
3134 card->state = CARD_STATE_SOFTSETUP;
3135 netif_carrier_on(card->dev);
3136
3137 qeth_set_allowed_threads(card, 0xffffffff, 0);
3138 if ((recover_flag == CARD_STATE_RECOVER) && recovery_mode) {
3139 qeth_l3_open(card->dev);
3140 qeth_l3_set_multicast_list(card->dev);
3141 }
3142 /* let user_space know that device is online */
3143 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3144 return 0;
3145out_remove:
3146 card->use_hard_stop = 1;
3147 qeth_l3_stop_card(card, 0);
3148 ccw_device_set_offline(CARD_DDEV(card));
3149 ccw_device_set_offline(CARD_WDEV(card));
3150 ccw_device_set_offline(CARD_RDEV(card));
3151 if (recover_flag == CARD_STATE_RECOVER)
3152 card->state = CARD_STATE_RECOVER;
3153 else
3154 card->state = CARD_STATE_DOWN;
3155 return -ENODEV;
3156}
3157
3158static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3159{
3160 return __qeth_l3_set_online(gdev, 0);
3161}
3162
3163static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3164 int recovery_mode)
3165{
3166 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3167 int rc = 0, rc2 = 0, rc3 = 0;
3168 enum qeth_card_states recover_flag;
3169
3170 QETH_DBF_TEXT(setup, 3, "setoffl");
3171 QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
3172
3173 if (card->dev && netif_carrier_ok(card->dev))
3174 netif_carrier_off(card->dev);
3175 recover_flag = card->state;
3176 if (qeth_l3_stop_card(card, recovery_mode) == -ERESTARTSYS) {
3177 PRINT_WARN("Stopping card %s interrupted by user!\n",
3178 CARD_BUS_ID(card));
3179 return -ERESTARTSYS;
3180 }
3181 rc = ccw_device_set_offline(CARD_DDEV(card));
3182 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3183 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3184 if (!rc)
3185 rc = (rc2) ? rc2 : rc3;
3186 if (rc)
3187 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
3188 if (recover_flag == CARD_STATE_UP)
3189 card->state = CARD_STATE_RECOVER;
3190 /* let user_space know that device is offline */
3191 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3192 return 0;
3193}
3194
3195static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3196{
3197 return __qeth_l3_set_offline(cgdev, 0);
3198}
3199
3200static int qeth_l3_recover(void *ptr)
3201{
3202 struct qeth_card *card;
3203 int rc = 0;
3204
3205 card = (struct qeth_card *) ptr;
3206 QETH_DBF_TEXT(trace, 2, "recover1");
3207 QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
3208 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3209 return 0;
3210 QETH_DBF_TEXT(trace, 2, "recover2");
3211 PRINT_WARN("Recovery of device %s started ...\n",
3212 CARD_BUS_ID(card));
3213 card->use_hard_stop = 1;
3214 __qeth_l3_set_offline(card->gdev, 1);
3215 rc = __qeth_l3_set_online(card->gdev, 1);
3216 /* don't run another scheduled recovery */
3217 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3218 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3219 if (!rc)
3220 PRINT_INFO("Device %s successfully recovered!\n",
3221 CARD_BUS_ID(card));
3222 else
3223 PRINT_INFO("Device %s could not be recovered!\n",
3224 CARD_BUS_ID(card));
3225 return 0;
3226}
3227
3228static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3229{
3230 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3231 qeth_l3_clear_ip_list(card, 0, 0);
3232 qeth_qdio_clear_card(card, 0);
3233 qeth_clear_qdio_buffers(card);
3234}
3235
3236struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3237 .probe = qeth_l3_probe_device,
3238 .remove = qeth_l3_remove_device,
3239 .set_online = qeth_l3_set_online,
3240 .set_offline = qeth_l3_set_offline,
3241 .shutdown = qeth_l3_shutdown,
3242};
3243EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3244
3245static int qeth_l3_ip_event(struct notifier_block *this,
76fef2b6 3246 unsigned long event, void *ptr)
4a71df50
FB		 3247{
3248 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3249 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3250 struct qeth_ipaddr *addr;
3251 struct qeth_card *card;
3252
c346dca1 3253 if (dev_net(dev) != &init_net)
76fef2b6
DM		 3254 return NOTIFY_DONE;
3255
4a71df50
FB		 3256 QETH_DBF_TEXT(trace, 3, "ipevent");
3257 card = qeth_l3_get_card_from_dev(dev);
3258 if (!card)
3259 return NOTIFY_DONE;
3260
3261 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3262 if (addr != NULL) {
3263 addr->u.a4.addr = ifa->ifa_address;
3264 addr->u.a4.mask = ifa->ifa_mask;
3265 addr->type = QETH_IP_TYPE_NORMAL;
3266 } else
3267 goto out;
3268
3269 switch (event) {
3270 case NETDEV_UP:
3271 if (!qeth_l3_add_ip(card, addr))
3272 kfree(addr);
3273 break;
3274 case NETDEV_DOWN:
3275 if (!qeth_l3_delete_ip(card, addr))
3276 kfree(addr);
3277 break;
3278 default:
3279 break;
3280 }
3281 qeth_l3_set_ip_addr_list(card);
3282out:
3283 return NOTIFY_DONE;
3284}
3285
3286static struct notifier_block qeth_l3_ip_notifier = {
3287 qeth_l3_ip_event,
3288 NULL,
3289};
3290
3291#ifdef CONFIG_QETH_IPV6
3292/**
3293 * IPv6 event handler
3294 */
3295static int qeth_l3_ip6_event(struct notifier_block *this,
76fef2b6 3296 unsigned long event, void *ptr)
4a71df50
FB		 3297{
3298 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3299 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3300 struct qeth_ipaddr *addr;
3301 struct qeth_card *card;
3302
3303 QETH_DBF_TEXT(trace, 3, "ip6event");
3304
3305 card = qeth_l3_get_card_from_dev(dev);
3306 if (!card)
3307 return NOTIFY_DONE;
3308 if (!qeth_is_supported(card, IPA_IPV6))
3309 return NOTIFY_DONE;
3310
3311 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3312 if (addr != NULL) {
3313 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3314 addr->u.a6.pfxlen = ifa->prefix_len;
3315 addr->type = QETH_IP_TYPE_NORMAL;
3316 } else
3317 goto out;
3318
3319 switch (event) {
3320 case NETDEV_UP:
3321 if (!qeth_l3_add_ip(card, addr))
3322 kfree(addr);
3323 break;
3324 case NETDEV_DOWN:
3325 if (!qeth_l3_delete_ip(card, addr))
3326 kfree(addr);
3327 break;
3328 default:
3329 break;
3330 }
3331 qeth_l3_set_ip_addr_list(card);
3332out:
3333 return NOTIFY_DONE;
3334}
3335
3336static struct notifier_block qeth_l3_ip6_notifier = {
3337 qeth_l3_ip6_event,
3338 NULL,
3339};
3340#endif
3341
3342static int qeth_l3_register_notifiers(void)
3343{
3344 int rc;
3345
3346 QETH_DBF_TEXT(trace, 5, "regnotif");
3347 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3348 if (rc)
3349 return rc;
3350#ifdef CONFIG_QETH_IPV6
3351 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3352 if (rc) {
3353 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3354 return rc;
3355 }
3356#else
3357 PRINT_WARN("layer 3 discipline no IPv6 support\n");
3358#endif
3359 return 0;
3360}
3361
3362static void qeth_l3_unregister_notifiers(void)
3363{
3364
3365 QETH_DBF_TEXT(trace, 5, "unregnot");
3366 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3367#ifdef CONFIG_QETH_IPV6
3368 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3369#endif /* QETH_IPV6 */
3370}
3371
3372static int __init qeth_l3_init(void)
3373{
3374 int rc = 0;
3375
3376 PRINT_INFO("register layer 3 discipline\n");
3377 rc = qeth_l3_register_notifiers();
3378 return rc;
3379}
3380
3381static void __exit qeth_l3_exit(void)
3382{
3383 qeth_l3_unregister_notifiers();
3384 PRINT_INFO("unregister layer 3 discipline\n");
3385}
3386
3387module_init(qeth_l3_init);
3388module_exit(qeth_l3_exit);
3389MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3390MODULE_DESCRIPTION("qeth layer 3 discipline");
3391MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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