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hamradio/scc: add missing block braces to multi-statement if
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l3_main.c
blob94a8ead64ed4d3ea428d6da0eaaa810e82146ded
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
31 static int qeth_l3_set_offline(struct ccwgroup_device *);
32 static int qeth_l3_recover(void *);
33 static int qeth_l3_stop(struct net_device *);
34 static void qeth_l3_set_multicast_list(struct net_device *);
35 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
36 static int qeth_l3_register_addr_entry(struct qeth_card *,
37 struct qeth_ipaddr *);
38 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
39 struct qeth_ipaddr *);
40 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
41 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
42
43
44 static int qeth_l3_isxdigit(char *buf)
45 {
46 while (*buf) {
47 if (!isxdigit(*buf++))
48 return 0;
49 }
50 return 1;
51 }
52
53 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
54 {
55 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
56 }
57
58 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
59 {
60 int count = 0, rc = 0;
61 int in[4];
62 char c;
63
64 rc = sscanf(buf, "%u.%u.%u.%u%c",
65 &in[0], &in[1], &in[2], &in[3], &c);
66 if (rc != 4 && (rc != 5 || c != '\n'))
67 return -EINVAL;
68 for (count = 0; count < 4; count++) {
69 if (in[count] > 255)
70 return -EINVAL;
71 addr[count] = in[count];
72 }
73 return 0;
74 }
75
76 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
77 {
78 sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
79 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
80 addr[0], addr[1], addr[2], addr[3],
81 addr[4], addr[5], addr[6], addr[7],
82 addr[8], addr[9], addr[10], addr[11],
83 addr[12], addr[13], addr[14], addr[15]);
84 }
85
86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
87 {
88 const char *end, *end_tmp, *start;
89 __u16 *in;
90 char num[5];
91 int num2, cnt, out, found, save_cnt;
92 unsigned short in_tmp[8] = {0, };
93
94 cnt = out = found = save_cnt = num2 = 0;
95 end = start = buf;
96 in = (__u16 *) addr;
97 memset(in, 0, 16);
98 while (*end) {
99 end = strchr(start, ':');
100 if (end == NULL) {
101 end = buf + strlen(buf);
102 end_tmp = strchr(start, '\n');
103 if (end_tmp != NULL)
104 end = end_tmp;
105 out = 1;
106 }
107 if ((end - start)) {
108 memset(num, 0, 5);
109 if ((end - start) > 4)
110 return -EINVAL;
111 memcpy(num, start, end - start);
112 if (!qeth_l3_isxdigit(num))
113 return -EINVAL;
114 sscanf(start, "%x", &num2);
115 if (found)
116 in_tmp[save_cnt++] = num2;
117 else
118 in[cnt++] = num2;
119 if (out)
120 break;
121 } else {
122 if (found)
123 return -EINVAL;
124 found = 1;
125 }
126 start = ++end;
127 }
128 if (cnt + save_cnt > 8)
129 return -EINVAL;
130 cnt = 7;
131 while (save_cnt)
132 in[cnt--] = in_tmp[--save_cnt];
133 return 0;
134 }
135
136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
137 char *buf)
138 {
139 if (proto == QETH_PROT_IPV4)
140 qeth_l3_ipaddr4_to_string(addr, buf);
141 else if (proto == QETH_PROT_IPV6)
142 qeth_l3_ipaddr6_to_string(addr, buf);
143 }
144
145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
146 __u8 *addr)
147 {
148 if (proto == QETH_PROT_IPV4)
149 return qeth_l3_string_to_ipaddr4(buf, addr);
150 else if (proto == QETH_PROT_IPV6)
151 return qeth_l3_string_to_ipaddr6(buf, addr);
152 else
153 return -EINVAL;
154 }
155
156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
157 {
158 int i, j;
159 u8 octet;
160
161 for (i = 0; i < len; ++i) {
162 octet = addr[i];
163 for (j = 7; j >= 0; --j) {
164 bits[i*8 + j] = octet & 1;
165 octet >>= 1;
166 }
167 }
168 }
169
170 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
171 struct qeth_ipaddr *addr)
172 {
173 struct qeth_ipato_entry *ipatoe;
174 u8 addr_bits[128] = {0, };
175 u8 ipatoe_bits[128] = {0, };
176 int rc = 0;
177
178 if (!card->ipato.enabled)
179 return 0;
180
181 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
182 (addr->proto == QETH_PROT_IPV4)? 4:16);
183 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
184 if (addr->proto != ipatoe->proto)
185 continue;
186 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
187 (ipatoe->proto == QETH_PROT_IPV4) ?
188 4 : 16);
189 if (addr->proto == QETH_PROT_IPV4)
190 rc = !memcmp(addr_bits, ipatoe_bits,
191 min(32, ipatoe->mask_bits));
192 else
193 rc = !memcmp(addr_bits, ipatoe_bits,
194 min(128, ipatoe->mask_bits));
195 if (rc)
196 break;
197 }
198 /* invert? */
199 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
200 rc = !rc;
201 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
202 rc = !rc;
203
204 return rc;
205 }
206
207 /*
208 * Add IP to be added to todo list. If there is already an "add todo"
209 * in this list we just incremenent the reference count.
210 * Returns 0 if we just incremented reference count.
211 */
212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
213 struct qeth_ipaddr *addr, int add)
214 {
215 struct qeth_ipaddr *tmp, *t;
216 int found = 0;
217
218 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
219 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
220 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
221 return 0;
222 if ((tmp->proto == QETH_PROT_IPV4) &&
223 (addr->proto == QETH_PROT_IPV4) &&
224 (tmp->type == addr->type) &&
225 (tmp->is_multicast == addr->is_multicast) &&
226 (tmp->u.a4.addr == addr->u.a4.addr) &&
227 (tmp->u.a4.mask == addr->u.a4.mask)) {
228 found = 1;
229 break;
230 }
231 if ((tmp->proto == QETH_PROT_IPV6) &&
232 (addr->proto == QETH_PROT_IPV6) &&
233 (tmp->type == addr->type) &&
234 (tmp->is_multicast == addr->is_multicast) &&
235 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
236 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
237 sizeof(struct in6_addr)) == 0)) {
238 found = 1;
239 break;
240 }
241 }
242 if (found) {
243 if (addr->users != 0)
244 tmp->users += addr->users;
245 else
246 tmp->users += add ? 1 : -1;
247 if (tmp->users == 0) {
248 list_del(&tmp->entry);
249 kfree(tmp);
250 }
251 return 0;
252 } else {
253 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
254 list_add(&addr->entry, card->ip_tbd_list);
255 else {
256 if (addr->users == 0)
257 addr->users += add ? 1 : -1;
258 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
259 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
260 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
261 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
262 }
263 list_add_tail(&addr->entry, card->ip_tbd_list);
264 }
265 return 1;
266 }
267 }
268
269 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
270 {
271 unsigned long flags;
272 int rc = 0;
273
274 QETH_DBF_TEXT(TRACE, 4, "delip");
275
276 if (addr->proto == QETH_PROT_IPV4)
277 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
278 else {
279 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
280 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
281 }
282 spin_lock_irqsave(&card->ip_lock, flags);
283 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
284 spin_unlock_irqrestore(&card->ip_lock, flags);
285 return rc;
286 }
287
288 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
289 {
290 unsigned long flags;
291 int rc = 0;
292
293 QETH_DBF_TEXT(TRACE, 4, "addip");
294 if (addr->proto == QETH_PROT_IPV4)
295 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
296 else {
297 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
298 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
299 }
300 spin_lock_irqsave(&card->ip_lock, flags);
301 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
302 spin_unlock_irqrestore(&card->ip_lock, flags);
303 return rc;
304 }
305
306
307 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
308 enum qeth_prot_versions prot)
309 {
310 struct qeth_ipaddr *addr;
311
312 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
313 if (addr == NULL) {
314 PRINT_WARN("Not enough memory to add address\n");
315 return NULL;
316 }
317 addr->type = QETH_IP_TYPE_NORMAL;
318 addr->proto = prot;
319 return addr;
320 }
321
322 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
323 {
324 struct qeth_ipaddr *iptodo;
325 unsigned long flags;
326
327 QETH_DBF_TEXT(TRACE, 4, "delmc");
328 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
329 if (!iptodo) {
330 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
331 return;
332 }
333 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
334 spin_lock_irqsave(&card->ip_lock, flags);
335 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
336 kfree(iptodo);
337 spin_unlock_irqrestore(&card->ip_lock, flags);
338 }
339
340 /*
341 * Add/remove address to/from card's ip list, i.e. try to add or remove
342 * reference to/from an IP address that is already registered on the card.
343 * Returns:
344 * 0 address was on card and its reference count has been adjusted,
345 * but is still > 0, so nothing has to be done
346 * also returns 0 if card was not on card and the todo was to delete
347 * the address -> there is also nothing to be done
348 * 1 address was not on card and the todo is to add it to the card's ip
349 * list
350 * -1 address was on card and its reference count has been decremented
351 * to <= 0 by the todo -> address must be removed from card
352 */
353 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
354 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
355 {
356 struct qeth_ipaddr *addr;
357 int found = 0;
358
359 list_for_each_entry(addr, &card->ip_list, entry) {
360 if ((addr->proto == QETH_PROT_IPV4) &&
361 (todo->proto == QETH_PROT_IPV4) &&
362 (addr->type == todo->type) &&
363 (addr->u.a4.addr == todo->u.a4.addr) &&
364 (addr->u.a4.mask == todo->u.a4.mask)) {
365 found = 1;
366 break;
367 }
368 if ((addr->proto == QETH_PROT_IPV6) &&
369 (todo->proto == QETH_PROT_IPV6) &&
370 (addr->type == todo->type) &&
371 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
372 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
373 sizeof(struct in6_addr)) == 0)) {
374 found = 1;
375 break;
376 }
377 }
378 if (found) {
379 addr->users += todo->users;
380 if (addr->users <= 0) {
381 *__addr = addr;
382 return -1;
383 } else {
384 /* for VIPA and RXIP limit refcount to 1 */
385 if (addr->type != QETH_IP_TYPE_NORMAL)
386 addr->users = 1;
387 return 0;
388 }
389 }
390 if (todo->users > 0) {
391 /* for VIPA and RXIP limit refcount to 1 */
392 if (todo->type != QETH_IP_TYPE_NORMAL)
393 todo->users = 1;
394 return 1;
395 } else
396 return 0;
397 }
398
399 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
400 unsigned long *flags)
401 {
402 struct list_head fail_list;
403 struct qeth_ipaddr *addr, *tmp;
404 int rc;
405
406 INIT_LIST_HEAD(&fail_list);
407 again:
408 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
409 if (addr->is_multicast) {
410 list_del(&addr->entry);
411 spin_unlock_irqrestore(&card->ip_lock, *flags);
412 rc = qeth_l3_deregister_addr_entry(card, addr);
413 spin_lock_irqsave(&card->ip_lock, *flags);
414 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
415 kfree(addr);
416 else
417 list_add_tail(&addr->entry, &fail_list);
418 goto again;
419 }
420 }
421 list_splice(&fail_list, &card->ip_list);
422 }
423
424 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
425 {
426 struct list_head *tbd_list;
427 struct qeth_ipaddr *todo, *addr;
428 unsigned long flags;
429 int rc;
430
431 QETH_DBF_TEXT(TRACE, 2, "sdiplist");
432 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
433
434 spin_lock_irqsave(&card->ip_lock, flags);
435 tbd_list = card->ip_tbd_list;
436 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
437 if (!card->ip_tbd_list) {
438 QETH_DBF_TEXT(TRACE, 0, "silnomem");
439 card->ip_tbd_list = tbd_list;
440 spin_unlock_irqrestore(&card->ip_lock, flags);
441 return;
442 } else
443 INIT_LIST_HEAD(card->ip_tbd_list);
444
445 while (!list_empty(tbd_list)) {
446 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
447 list_del(&todo->entry);
448 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
449 __qeth_l3_delete_all_mc(card, &flags);
450 kfree(todo);
451 continue;
452 }
453 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
454 if (rc == 0) {
455 /* nothing to be done; only adjusted refcount */
456 kfree(todo);
457 } else if (rc == 1) {
458 /* new entry to be added to on-card list */
459 spin_unlock_irqrestore(&card->ip_lock, flags);
460 rc = qeth_l3_register_addr_entry(card, todo);
461 spin_lock_irqsave(&card->ip_lock, flags);
462 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
463 list_add_tail(&todo->entry, &card->ip_list);
464 else
465 kfree(todo);
466 } else if (rc == -1) {
467 /* on-card entry to be removed */
468 list_del_init(&addr->entry);
469 spin_unlock_irqrestore(&card->ip_lock, flags);
470 rc = qeth_l3_deregister_addr_entry(card, addr);
471 spin_lock_irqsave(&card->ip_lock, flags);
472 if (!rc || (rc == IPA_RC_PRIMARY_ALREADY_DEFINED))
473 kfree(addr);
474 else
475 list_add_tail(&addr->entry, &card->ip_list);
476 kfree(todo);
477 }
478 }
479 spin_unlock_irqrestore(&card->ip_lock, flags);
480 kfree(tbd_list);
481 }
482
483 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
484 int recover)
485 {
486 struct qeth_ipaddr *addr, *tmp;
487 unsigned long flags;
488
489 QETH_DBF_TEXT(TRACE, 4, "clearip");
490 spin_lock_irqsave(&card->ip_lock, flags);
491 /* clear todo list */
492 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
493 list_del(&addr->entry);
494 kfree(addr);
495 }
496
497 while (!list_empty(&card->ip_list)) {
498 addr = list_entry(card->ip_list.next,
499 struct qeth_ipaddr, entry);
500 list_del_init(&addr->entry);
501 if (clean) {
502 spin_unlock_irqrestore(&card->ip_lock, flags);
503 qeth_l3_deregister_addr_entry(card, addr);
504 spin_lock_irqsave(&card->ip_lock, flags);
505 }
506 if (!recover || addr->is_multicast) {
507 kfree(addr);
508 continue;
509 }
510 list_add_tail(&addr->entry, card->ip_tbd_list);
511 }
512 spin_unlock_irqrestore(&card->ip_lock, flags);
513 }
514
515 static int qeth_l3_address_exists_in_list(struct list_head *list,
516 struct qeth_ipaddr *addr, int same_type)
517 {
518 struct qeth_ipaddr *tmp;
519
520 list_for_each_entry(tmp, list, entry) {
521 if ((tmp->proto == QETH_PROT_IPV4) &&
522 (addr->proto == QETH_PROT_IPV4) &&
523 ((same_type && (tmp->type == addr->type)) ||
524 (!same_type && (tmp->type != addr->type))) &&
525 (tmp->u.a4.addr == addr->u.a4.addr))
526 return 1;
527
528 if ((tmp->proto == QETH_PROT_IPV6) &&
529 (addr->proto == QETH_PROT_IPV6) &&
530 ((same_type && (tmp->type == addr->type)) ||
531 (!same_type && (tmp->type != addr->type))) &&
532 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
533 sizeof(struct in6_addr)) == 0))
534 return 1;
535
536 }
537 return 0;
538 }
539
540 static int qeth_l3_send_setdelmc(struct qeth_card *card,
541 struct qeth_ipaddr *addr, int ipacmd)
542 {
543 int rc;
544 struct qeth_cmd_buffer *iob;
545 struct qeth_ipa_cmd *cmd;
546
547 QETH_DBF_TEXT(TRACE, 4, "setdelmc");
548
549 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
550 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
551 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
552 if (addr->proto == QETH_PROT_IPV6)
553 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
554 sizeof(struct in6_addr));
555 else
556 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
557
558 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
559
560 return rc;
561 }
562
563 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
564 {
565 int i, j;
566 for (i = 0; i < 16; i++) {
567 j = (len) - (i * 8);
568 if (j >= 8)
569 netmask[i] = 0xff;
570 else if (j > 0)
571 netmask[i] = (u8)(0xFF00 >> j);
572 else
573 netmask[i] = 0;
574 }
575 }
576
577 static int qeth_l3_send_setdelip(struct qeth_card *card,
578 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
579 {
580 int rc;
581 struct qeth_cmd_buffer *iob;
582 struct qeth_ipa_cmd *cmd;
583 __u8 netmask[16];
584
585 QETH_DBF_TEXT(TRACE, 4, "setdelip");
586 QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
587
588 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
589 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
590 if (addr->proto == QETH_PROT_IPV6) {
591 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
592 sizeof(struct in6_addr));
593 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
594 memcpy(cmd->data.setdelip6.mask, netmask,
595 sizeof(struct in6_addr));
596 cmd->data.setdelip6.flags = flags;
597 } else {
598 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
599 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
600 cmd->data.setdelip4.flags = flags;
601 }
602
603 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
604
605 return rc;
606 }
607
608 static int qeth_l3_send_setrouting(struct qeth_card *card,
609 enum qeth_routing_types type, enum qeth_prot_versions prot)
610 {
611 int rc;
612 struct qeth_ipa_cmd *cmd;
613 struct qeth_cmd_buffer *iob;
614
615 QETH_DBF_TEXT(TRACE, 4, "setroutg");
616 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
617 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
618 cmd->data.setrtg.type = (type);
619 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
620
621 return rc;
622 }
623
624 static void qeth_l3_correct_routing_type(struct qeth_card *card,
625 enum qeth_routing_types *type, enum qeth_prot_versions prot)
626 {
627 if (card->info.type == QETH_CARD_TYPE_IQD) {
628 switch (*type) {
629 case NO_ROUTER:
630 case PRIMARY_CONNECTOR:
631 case SECONDARY_CONNECTOR:
632 case MULTICAST_ROUTER:
633 return;
634 default:
635 goto out_inval;
636 }
637 } else {
638 switch (*type) {
639 case NO_ROUTER:
640 case PRIMARY_ROUTER:
641 case SECONDARY_ROUTER:
642 return;
643 case MULTICAST_ROUTER:
644 if (qeth_is_ipafunc_supported(card, prot,
645 IPA_OSA_MC_ROUTER))
646 return;
647 default:
648 goto out_inval;
649 }
650 }
651 out_inval:
652 PRINT_WARN("Routing type '%s' not supported for interface %s.\n"
653 "Router status set to 'no router'.\n",
654 ((*type == PRIMARY_ROUTER)? "primary router" :
655 (*type == SECONDARY_ROUTER)? "secondary router" :
656 (*type == PRIMARY_CONNECTOR)? "primary connector" :
657 (*type == SECONDARY_CONNECTOR)? "secondary connector" :
658 (*type == MULTICAST_ROUTER)? "multicast router" :
659 "unknown"),
660 card->dev->name);
661 *type = NO_ROUTER;
662 }
663
664 int qeth_l3_setrouting_v4(struct qeth_card *card)
665 {
666 int rc;
667
668 QETH_DBF_TEXT(TRACE, 3, "setrtg4");
669
670 qeth_l3_correct_routing_type(card, &card->options.route4.type,
671 QETH_PROT_IPV4);
672
673 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
674 QETH_PROT_IPV4);
675 if (rc) {
676 card->options.route4.type = NO_ROUTER;
677 PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
678 "Type set to 'no router'.\n",
679 rc, QETH_CARD_IFNAME(card));
680 }
681 return rc;
682 }
683
684 int qeth_l3_setrouting_v6(struct qeth_card *card)
685 {
686 int rc = 0;
687
688 QETH_DBF_TEXT(TRACE, 3, "setrtg6");
689 #ifdef CONFIG_QETH_IPV6
690
691 if (!qeth_is_supported(card, IPA_IPV6))
692 return 0;
693 qeth_l3_correct_routing_type(card, &card->options.route6.type,
694 QETH_PROT_IPV6);
695
696 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
697 QETH_PROT_IPV6);
698 if (rc) {
699 card->options.route6.type = NO_ROUTER;
700 PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
701 "Type set to 'no router'.\n",
702 rc, QETH_CARD_IFNAME(card));
703 }
704 #endif
705 return rc;
706 }
707
708 /*
709 * IP address takeover related functions
710 */
711 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
712 {
713
714 struct qeth_ipato_entry *ipatoe, *tmp;
715 unsigned long flags;
716
717 spin_lock_irqsave(&card->ip_lock, flags);
718 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
719 list_del(&ipatoe->entry);
720 kfree(ipatoe);
721 }
722 spin_unlock_irqrestore(&card->ip_lock, flags);
723 }
724
725 int qeth_l3_add_ipato_entry(struct qeth_card *card,
726 struct qeth_ipato_entry *new)
727 {
728 struct qeth_ipato_entry *ipatoe;
729 unsigned long flags;
730 int rc = 0;
731
732 QETH_DBF_TEXT(TRACE, 2, "addipato");
733 spin_lock_irqsave(&card->ip_lock, flags);
734 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
735 if (ipatoe->proto != new->proto)
736 continue;
737 if (!memcmp(ipatoe->addr, new->addr,
738 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
739 (ipatoe->mask_bits == new->mask_bits)) {
740 PRINT_WARN("ipato entry already exists!\n");
741 rc = -EEXIST;
742 break;
743 }
744 }
745 if (!rc)
746 list_add_tail(&new->entry, &card->ipato.entries);
747
748 spin_unlock_irqrestore(&card->ip_lock, flags);
749 return rc;
750 }
751
752 void qeth_l3_del_ipato_entry(struct qeth_card *card,
753 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
754 {
755 struct qeth_ipato_entry *ipatoe, *tmp;
756 unsigned long flags;
757
758 QETH_DBF_TEXT(TRACE, 2, "delipato");
759 spin_lock_irqsave(&card->ip_lock, flags);
760 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
761 if (ipatoe->proto != proto)
762 continue;
763 if (!memcmp(ipatoe->addr, addr,
764 (proto == QETH_PROT_IPV4)? 4:16) &&
765 (ipatoe->mask_bits == mask_bits)) {
766 list_del(&ipatoe->entry);
767 kfree(ipatoe);
768 }
769 }
770 spin_unlock_irqrestore(&card->ip_lock, flags);
771 }
772
773 /*
774 * VIPA related functions
775 */
776 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
777 const u8 *addr)
778 {
779 struct qeth_ipaddr *ipaddr;
780 unsigned long flags;
781 int rc = 0;
782
783 ipaddr = qeth_l3_get_addr_buffer(proto);
784 if (ipaddr) {
785 if (proto == QETH_PROT_IPV4) {
786 QETH_DBF_TEXT(TRACE, 2, "addvipa4");
787 memcpy(&ipaddr->u.a4.addr, addr, 4);
788 ipaddr->u.a4.mask = 0;
789 } else if (proto == QETH_PROT_IPV6) {
790 QETH_DBF_TEXT(TRACE, 2, "addvipa6");
791 memcpy(&ipaddr->u.a6.addr, addr, 16);
792 ipaddr->u.a6.pfxlen = 0;
793 }
794 ipaddr->type = QETH_IP_TYPE_VIPA;
795 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
796 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
797 } else
798 return -ENOMEM;
799 spin_lock_irqsave(&card->ip_lock, flags);
800 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
801 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
802 rc = -EEXIST;
803 spin_unlock_irqrestore(&card->ip_lock, flags);
804 if (rc) {
805 PRINT_WARN("Cannot add VIPA. Address already exists!\n");
806 return rc;
807 }
808 if (!qeth_l3_add_ip(card, ipaddr))
809 kfree(ipaddr);
810 qeth_l3_set_ip_addr_list(card);
811 return rc;
812 }
813
814 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
815 const u8 *addr)
816 {
817 struct qeth_ipaddr *ipaddr;
818
819 ipaddr = qeth_l3_get_addr_buffer(proto);
820 if (ipaddr) {
821 if (proto == QETH_PROT_IPV4) {
822 QETH_DBF_TEXT(TRACE, 2, "delvipa4");
823 memcpy(&ipaddr->u.a4.addr, addr, 4);
824 ipaddr->u.a4.mask = 0;
825 } else if (proto == QETH_PROT_IPV6) {
826 QETH_DBF_TEXT(TRACE, 2, "delvipa6");
827 memcpy(&ipaddr->u.a6.addr, addr, 16);
828 ipaddr->u.a6.pfxlen = 0;
829 }
830 ipaddr->type = QETH_IP_TYPE_VIPA;
831 } else
832 return;
833 if (!qeth_l3_delete_ip(card, ipaddr))
834 kfree(ipaddr);
835 qeth_l3_set_ip_addr_list(card);
836 }
837
838 /*
839 * proxy ARP related functions
840 */
841 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
842 const u8 *addr)
843 {
844 struct qeth_ipaddr *ipaddr;
845 unsigned long flags;
846 int rc = 0;
847
848 ipaddr = qeth_l3_get_addr_buffer(proto);
849 if (ipaddr) {
850 if (proto == QETH_PROT_IPV4) {
851 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
852 memcpy(&ipaddr->u.a4.addr, addr, 4);
853 ipaddr->u.a4.mask = 0;
854 } else if (proto == QETH_PROT_IPV6) {
855 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
856 memcpy(&ipaddr->u.a6.addr, addr, 16);
857 ipaddr->u.a6.pfxlen = 0;
858 }
859 ipaddr->type = QETH_IP_TYPE_RXIP;
860 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
861 ipaddr->del_flags = 0;
862 } else
863 return -ENOMEM;
864 spin_lock_irqsave(&card->ip_lock, flags);
865 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
866 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
867 rc = -EEXIST;
868 spin_unlock_irqrestore(&card->ip_lock, flags);
869 if (rc) {
870 PRINT_WARN("Cannot add RXIP. Address already exists!\n");
871 return rc;
872 }
873 if (!qeth_l3_add_ip(card, ipaddr))
874 kfree(ipaddr);
875 qeth_l3_set_ip_addr_list(card);
876 return 0;
877 }
878
879 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
880 const u8 *addr)
881 {
882 struct qeth_ipaddr *ipaddr;
883
884 ipaddr = qeth_l3_get_addr_buffer(proto);
885 if (ipaddr) {
886 if (proto == QETH_PROT_IPV4) {
887 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
888 memcpy(&ipaddr->u.a4.addr, addr, 4);
889 ipaddr->u.a4.mask = 0;
890 } else if (proto == QETH_PROT_IPV6) {
891 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
892 memcpy(&ipaddr->u.a6.addr, addr, 16);
893 ipaddr->u.a6.pfxlen = 0;
894 }
895 ipaddr->type = QETH_IP_TYPE_RXIP;
896 } else
897 return;
898 if (!qeth_l3_delete_ip(card, ipaddr))
899 kfree(ipaddr);
900 qeth_l3_set_ip_addr_list(card);
901 }
902
903 static int qeth_l3_register_addr_entry(struct qeth_card *card,
904 struct qeth_ipaddr *addr)
905 {
906 char buf[50];
907 int rc = 0;
908 int cnt = 3;
909
910 if (addr->proto == QETH_PROT_IPV4) {
911 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
912 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
913 } else if (addr->proto == QETH_PROT_IPV6) {
914 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
915 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
916 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
917 } else {
918 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
919 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
920 }
921 do {
922 if (addr->is_multicast)
923 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
924 else
925 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
926 addr->set_flags);
927 if (rc)
928 QETH_DBF_TEXT(TRACE, 2, "failed");
929 } while ((--cnt > 0) && rc);
930 if (rc) {
931 QETH_DBF_TEXT(TRACE, 2, "FAILED");
932 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
933 PRINT_WARN("Could not register IP address %s (rc=0x%x/%d)\n",
934 buf, rc, rc);
935 }
936 return rc;
937 }
938
939 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
940 struct qeth_ipaddr *addr)
941 {
942 int rc = 0;
943
944 if (addr->proto == QETH_PROT_IPV4) {
945 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
946 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
947 } else if (addr->proto == QETH_PROT_IPV6) {
948 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
949 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
950 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
951 } else {
952 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
953 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
954 }
955 if (addr->is_multicast)
956 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
957 else
958 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
959 addr->del_flags);
960 if (rc) {
961 QETH_DBF_TEXT(TRACE, 2, "failed");
962 /* TODO: re-activate this warning as soon as we have a
963 * clean mirco code
964 qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
965 PRINT_WARN("Could not deregister IP address %s (rc=%x)\n",
966 buf, rc);
967 */
968 }
969
970 return rc;
971 }
972
973 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
974 {
975 if (cast_type == RTN_MULTICAST)
976 return QETH_CAST_MULTICAST;
977 if (cast_type == RTN_BROADCAST)
978 return QETH_CAST_BROADCAST;
979 return QETH_CAST_UNICAST;
980 }
981
982 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
983 {
984 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
985 if (cast_type == RTN_MULTICAST)
986 return ct | QETH_CAST_MULTICAST;
987 if (cast_type == RTN_ANYCAST)
988 return ct | QETH_CAST_ANYCAST;
989 if (cast_type == RTN_BROADCAST)
990 return ct | QETH_CAST_BROADCAST;
991 return ct | QETH_CAST_UNICAST;
992 }
993
994 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
995 __u32 mode)
996 {
997 int rc;
998 struct qeth_cmd_buffer *iob;
999 struct qeth_ipa_cmd *cmd;
1000
1001 QETH_DBF_TEXT(TRACE, 4, "adpmode");
1002
1003 iob = qeth_get_adapter_cmd(card, command,
1004 sizeof(struct qeth_ipacmd_setadpparms));
1005 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1006 cmd->data.setadapterparms.data.mode = mode;
1007 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
1008 NULL);
1009 return rc;
1010 }
1011
1012 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
1013 {
1014 int rc;
1015
1016 QETH_DBF_TEXT(TRACE, 4, "adphstr");
1017
1018 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1019 rc = qeth_l3_send_setadp_mode(card,
1020 IPA_SETADP_SET_BROADCAST_MODE,
1021 card->options.broadcast_mode);
1022 if (rc)
1023 PRINT_WARN("couldn't set broadcast mode on "
1024 "device %s: x%x\n",
1025 CARD_BUS_ID(card), rc);
1026 rc = qeth_l3_send_setadp_mode(card,
1027 IPA_SETADP_ALTER_MAC_ADDRESS,
1028 card->options.macaddr_mode);
1029 if (rc)
1030 PRINT_WARN("couldn't set macaddr mode on "
1031 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1032 return rc;
1033 }
1034 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1035 PRINT_WARN("set adapter parameters not available "
1036 "to set broadcast mode, using ALLRINGS "
1037 "on device %s:\n", CARD_BUS_ID(card));
1038 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1039 PRINT_WARN("set adapter parameters not available "
1040 "to set macaddr mode, using NONCANONICAL "
1041 "on device %s:\n", CARD_BUS_ID(card));
1042 return 0;
1043 }
1044
1045 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1046 {
1047 int rc;
1048
1049 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1050
1051 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1052 PRINT_WARN("set adapter parameters not supported "
1053 "on device %s.\n",
1054 CARD_BUS_ID(card));
1055 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1056 return 0;
1057 }
1058 rc = qeth_query_setadapterparms(card);
1059 if (rc) {
1060 PRINT_WARN("couldn't set adapter parameters on device %s: "
1061 "x%x\n", CARD_BUS_ID(card), rc);
1062 return rc;
1063 }
1064 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1065 rc = qeth_setadpparms_change_macaddr(card);
1066 if (rc)
1067 PRINT_WARN("couldn't get MAC address on "
1068 "device %s: x%x\n",
1069 CARD_BUS_ID(card), rc);
1070 }
1071
1072 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1073 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1074 rc = qeth_l3_setadapter_hstr(card);
1075
1076 return rc;
1077 }
1078
1079 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1080 struct qeth_reply *reply, unsigned long data)
1081 {
1082 struct qeth_ipa_cmd *cmd;
1083
1084 QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1085
1086 cmd = (struct qeth_ipa_cmd *) data;
1087 if (cmd->hdr.return_code == 0) {
1088 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1089 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1090 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1091 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1092 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1093 }
1094 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1095 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1096 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1097 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1098 }
1099 return 0;
1100 }
1101
1102 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1103 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1104 __u16 len, enum qeth_prot_versions prot)
1105 {
1106 struct qeth_cmd_buffer *iob;
1107 struct qeth_ipa_cmd *cmd;
1108
1109 QETH_DBF_TEXT(TRACE, 4, "getasscm");
1110 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1111
1112 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1113 cmd->data.setassparms.hdr.assist_no = ipa_func;
1114 cmd->data.setassparms.hdr.length = 8 + len;
1115 cmd->data.setassparms.hdr.command_code = cmd_code;
1116 cmd->data.setassparms.hdr.return_code = 0;
1117 cmd->data.setassparms.hdr.seq_no = 0;
1118
1119 return iob;
1120 }
1121
1122 static int qeth_l3_send_setassparms(struct qeth_card *card,
1123 struct qeth_cmd_buffer *iob, __u16 len, long data,
1124 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1125 unsigned long),
1126 void *reply_param)
1127 {
1128 int rc;
1129 struct qeth_ipa_cmd *cmd;
1130
1131 QETH_DBF_TEXT(TRACE, 4, "sendassp");
1132
1133 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1134 if (len <= sizeof(__u32))
1135 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1136 else /* (len > sizeof(__u32)) */
1137 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1138
1139 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1140 return rc;
1141 }
1142
1143 #ifdef CONFIG_QETH_IPV6
1144 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1145 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1146 {
1147 int rc;
1148 struct qeth_cmd_buffer *iob;
1149
1150 QETH_DBF_TEXT(TRACE, 4, "simassp6");
1151 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1152 0, QETH_PROT_IPV6);
1153 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1154 qeth_l3_default_setassparms_cb, NULL);
1155 return rc;
1156 }
1157 #endif
1158
1159 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1160 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1161 {
1162 int rc;
1163 int length = 0;
1164 struct qeth_cmd_buffer *iob;
1165
1166 QETH_DBF_TEXT(TRACE, 4, "simassp4");
1167 if (data)
1168 length = sizeof(__u32);
1169 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1170 length, QETH_PROT_IPV4);
1171 rc = qeth_l3_send_setassparms(card, iob, length, data,
1172 qeth_l3_default_setassparms_cb, NULL);
1173 return rc;
1174 }
1175
1176 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1177 {
1178 int rc;
1179
1180 QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1181
1182 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1183 PRINT_WARN("ARP processing not supported "
1184 "on %s!\n", QETH_CARD_IFNAME(card));
1185 return 0;
1186 }
1187 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1188 IPA_CMD_ASS_START, 0);
1189 if (rc) {
1190 PRINT_WARN("Could not start ARP processing "
1191 "assist on %s: 0x%x\n",
1192 QETH_CARD_IFNAME(card), rc);
1193 }
1194 return rc;
1195 }
1196
1197 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1198 {
1199 int rc;
1200
1201 QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1202
1203 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1204 PRINT_INFO("Hardware IP fragmentation not supported on %s\n",
1205 QETH_CARD_IFNAME(card));
1206 return -EOPNOTSUPP;
1207 }
1208
1209 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1210 IPA_CMD_ASS_START, 0);
1211 if (rc) {
1212 PRINT_WARN("Could not start Hardware IP fragmentation "
1213 "assist on %s: 0x%x\n",
1214 QETH_CARD_IFNAME(card), rc);
1215 } else
1216 PRINT_INFO("Hardware IP fragmentation enabled \n");
1217 return rc;
1218 }
1219
1220 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1221 {
1222 int rc;
1223
1224 QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1225
1226 if (!card->options.fake_ll)
1227 return -EOPNOTSUPP;
1228
1229 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1230 PRINT_INFO("Inbound source address not "
1231 "supported on %s\n", QETH_CARD_IFNAME(card));
1232 return -EOPNOTSUPP;
1233 }
1234
1235 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1236 IPA_CMD_ASS_START, 0);
1237 if (rc)
1238 PRINT_WARN("Could not start inbound source "
1239 "assist on %s: 0x%x\n",
1240 QETH_CARD_IFNAME(card), rc);
1241 return rc;
1242 }
1243
1244 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1245 {
1246 int rc = 0;
1247
1248 QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1249
1250 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1251 PRINT_WARN("VLAN not supported on %s\n",
1252 QETH_CARD_IFNAME(card));
1253 return -EOPNOTSUPP;
1254 }
1255
1256 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1257 IPA_CMD_ASS_START, 0);
1258 if (rc) {
1259 PRINT_WARN("Could not start vlan "
1260 "assist on %s: 0x%x\n",
1261 QETH_CARD_IFNAME(card), rc);
1262 } else {
1263 PRINT_INFO("VLAN enabled \n");
1264 }
1265 return rc;
1266 }
1267
1268 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1269 {
1270 int rc;
1271
1272 QETH_DBF_TEXT(TRACE, 3, "stmcast");
1273
1274 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1275 PRINT_WARN("Multicast not supported on %s\n",
1276 QETH_CARD_IFNAME(card));
1277 return -EOPNOTSUPP;
1278 }
1279
1280 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1281 IPA_CMD_ASS_START, 0);
1282 if (rc) {
1283 PRINT_WARN("Could not start multicast "
1284 "assist on %s: rc=%i\n",
1285 QETH_CARD_IFNAME(card), rc);
1286 } else {
1287 PRINT_INFO("Multicast enabled\n");
1288 card->dev->flags |= IFF_MULTICAST;
1289 }
1290 return rc;
1291 }
1292
1293 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1294 struct qeth_reply *reply, unsigned long data)
1295 {
1296 struct qeth_ipa_cmd *cmd;
1297
1298 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1299
1300 cmd = (struct qeth_ipa_cmd *) data;
1301 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1302 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1303 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1304 } else {
1305 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1306 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1307 }
1308 QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1309 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1310 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1311 return 0;
1312 }
1313
1314 static int qeth_l3_query_ipassists(struct qeth_card *card,
1315 enum qeth_prot_versions prot)
1316 {
1317 int rc;
1318 struct qeth_cmd_buffer *iob;
1319
1320 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1321 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1322 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1323 return rc;
1324 }
1325
1326 #ifdef CONFIG_QETH_IPV6
1327 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1328 {
1329 int rc;
1330
1331 QETH_DBF_TEXT(TRACE, 3, "softipv6");
1332
1333 if (card->info.type == QETH_CARD_TYPE_IQD)
1334 goto out;
1335
1336 rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1337 if (rc) {
1338 PRINT_ERR("IPv6 query ipassist failed on %s\n",
1339 QETH_CARD_IFNAME(card));
1340 return rc;
1341 }
1342 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1343 IPA_CMD_ASS_START, 3);
1344 if (rc) {
1345 PRINT_WARN("IPv6 start assist (version 4) failed "
1346 "on %s: 0x%x\n",
1347 QETH_CARD_IFNAME(card), rc);
1348 return rc;
1349 }
1350 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1351 IPA_CMD_ASS_START);
1352 if (rc) {
1353 PRINT_WARN("IPV6 start assist (version 6) failed "
1354 "on %s: 0x%x\n",
1355 QETH_CARD_IFNAME(card), rc);
1356 return rc;
1357 }
1358 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1359 IPA_CMD_ASS_START);
1360 if (rc) {
1361 PRINT_WARN("Could not enable passthrough "
1362 "on %s: 0x%x\n",
1363 QETH_CARD_IFNAME(card), rc);
1364 return rc;
1365 }
1366 out:
1367 PRINT_INFO("IPV6 enabled \n");
1368 return 0;
1369 }
1370 #endif
1371
1372 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1373 {
1374 int rc = 0;
1375
1376 QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1377
1378 if (!qeth_is_supported(card, IPA_IPV6)) {
1379 PRINT_WARN("IPv6 not supported on %s\n",
1380 QETH_CARD_IFNAME(card));
1381 return 0;
1382 }
1383 #ifdef CONFIG_QETH_IPV6
1384 rc = qeth_l3_softsetup_ipv6(card);
1385 #endif
1386 return rc ;
1387 }
1388
1389 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1390 {
1391 int rc;
1392
1393 QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1394 card->info.broadcast_capable = 0;
1395 if (!qeth_is_supported(card, IPA_FILTERING)) {
1396 PRINT_WARN("Broadcast not supported on %s\n",
1397 QETH_CARD_IFNAME(card));
1398 rc = -EOPNOTSUPP;
1399 goto out;
1400 }
1401 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1402 IPA_CMD_ASS_START, 0);
1403 if (rc) {
1404 PRINT_WARN("Could not enable broadcasting filtering "
1405 "on %s: 0x%x\n",
1406 QETH_CARD_IFNAME(card), rc);
1407 goto out;
1408 }
1409
1410 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1411 IPA_CMD_ASS_CONFIGURE, 1);
1412 if (rc) {
1413 PRINT_WARN("Could not set up broadcast filtering on %s: 0x%x\n",
1414 QETH_CARD_IFNAME(card), rc);
1415 goto out;
1416 }
1417 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1418 PRINT_INFO("Broadcast enabled \n");
1419 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1420 IPA_CMD_ASS_ENABLE, 1);
1421 if (rc) {
1422 PRINT_WARN("Could not set up broadcast echo filtering on "
1423 "%s: 0x%x\n", QETH_CARD_IFNAME(card), rc);
1424 goto out;
1425 }
1426 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1427 out:
1428 if (card->info.broadcast_capable)
1429 card->dev->flags |= IFF_BROADCAST;
1430 else
1431 card->dev->flags &= ~IFF_BROADCAST;
1432 return rc;
1433 }
1434
1435 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1436 {
1437 int rc;
1438
1439 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1440 IPA_CMD_ASS_START, 0);
1441 if (rc) {
1442 PRINT_WARN("Starting Inbound HW Checksumming failed on %s: "
1443 "0x%x,\ncontinuing using Inbound SW Checksumming\n",
1444 QETH_CARD_IFNAME(card), rc);
1445 return rc;
1446 }
1447 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1448 IPA_CMD_ASS_ENABLE,
1449 card->info.csum_mask);
1450 if (rc) {
1451 PRINT_WARN("Enabling Inbound HW Checksumming failed on %s: "
1452 "0x%x,\ncontinuing using Inbound SW Checksumming\n",
1453 QETH_CARD_IFNAME(card), rc);
1454 return rc;
1455 }
1456 return 0;
1457 }
1458
1459 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1460 {
1461 int rc = 0;
1462
1463 QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1464
1465 if (card->options.checksum_type == NO_CHECKSUMMING) {
1466 PRINT_WARN("Using no checksumming on %s.\n",
1467 QETH_CARD_IFNAME(card));
1468 return 0;
1469 }
1470 if (card->options.checksum_type == SW_CHECKSUMMING) {
1471 PRINT_WARN("Using SW checksumming on %s.\n",
1472 QETH_CARD_IFNAME(card));
1473 return 0;
1474 }
1475 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1476 PRINT_WARN("Inbound HW Checksumming not "
1477 "supported on %s,\ncontinuing "
1478 "using Inbound SW Checksumming\n",
1479 QETH_CARD_IFNAME(card));
1480 card->options.checksum_type = SW_CHECKSUMMING;
1481 return 0;
1482 }
1483 rc = qeth_l3_send_checksum_command(card);
1484 if (!rc)
1485 PRINT_INFO("HW Checksumming (inbound) enabled \n");
1486
1487 return rc;
1488 }
1489
1490 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1491 {
1492 int rc;
1493
1494 QETH_DBF_TEXT(TRACE, 3, "sttso");
1495
1496 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1497 PRINT_WARN("Outbound TSO not supported on %s\n",
1498 QETH_CARD_IFNAME(card));
1499 rc = -EOPNOTSUPP;
1500 } else {
1501 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1502 IPA_CMD_ASS_START, 0);
1503 if (rc)
1504 PRINT_WARN("Could not start outbound TSO "
1505 "assist on %s: rc=%i\n",
1506 QETH_CARD_IFNAME(card), rc);
1507 else
1508 PRINT_INFO("Outbound TSO enabled\n");
1509 }
1510 if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1511 card->options.large_send = QETH_LARGE_SEND_NO;
1512 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1513 }
1514 return rc;
1515 }
1516
1517 static int qeth_l3_start_ipassists(struct qeth_card *card)
1518 {
1519 QETH_DBF_TEXT(TRACE, 3, "strtipas");
1520 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1521 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1522 qeth_l3_start_ipa_source_mac(card); /* go on*/
1523 qeth_l3_start_ipa_vlan(card); /* go on*/
1524 qeth_l3_start_ipa_multicast(card); /* go on*/
1525 qeth_l3_start_ipa_ipv6(card); /* go on*/
1526 qeth_l3_start_ipa_broadcast(card); /* go on*/
1527 qeth_l3_start_ipa_checksum(card); /* go on*/
1528 qeth_l3_start_ipa_tso(card); /* go on*/
1529 return 0;
1530 }
1531
1532 static int qeth_l3_put_unique_id(struct qeth_card *card)
1533 {
1534
1535 int rc = 0;
1536 struct qeth_cmd_buffer *iob;
1537 struct qeth_ipa_cmd *cmd;
1538
1539 QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1540
1541 if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1542 UNIQUE_ID_NOT_BY_CARD)
1543 return -1;
1544 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1545 QETH_PROT_IPV6);
1546 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1547 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1548 card->info.unique_id;
1549 memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1550 card->dev->dev_addr, OSA_ADDR_LEN);
1551 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1552 return rc;
1553 }
1554
1555 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1556 struct qeth_reply *reply, unsigned long data)
1557 {
1558 struct qeth_ipa_cmd *cmd;
1559
1560 cmd = (struct qeth_ipa_cmd *) data;
1561 if (cmd->hdr.return_code == 0)
1562 memcpy(card->dev->dev_addr,
1563 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1564 else
1565 random_ether_addr(card->dev->dev_addr);
1566
1567 return 0;
1568 }
1569
1570 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1571 {
1572 int rc = 0;
1573 struct qeth_cmd_buffer *iob;
1574 struct qeth_ipa_cmd *cmd;
1575
1576 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1577
1578 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1579 QETH_PROT_IPV6);
1580 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1581 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1582 card->info.unique_id;
1583
1584 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1585 NULL);
1586 return rc;
1587 }
1588
1589 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1590 struct qeth_reply *reply, unsigned long data)
1591 {
1592 struct qeth_ipa_cmd *cmd;
1593
1594 cmd = (struct qeth_ipa_cmd *) data;
1595 if (cmd->hdr.return_code == 0)
1596 card->info.unique_id = *((__u16 *)
1597 &cmd->data.create_destroy_addr.unique_id[6]);
1598 else {
1599 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1600 UNIQUE_ID_NOT_BY_CARD;
1601 PRINT_WARN("couldn't get a unique id from the card on device "
1602 "%s (result=x%x), using default id. ipv6 "
1603 "autoconfig on other lpars may lead to duplicate "
1604 "ip addresses. please use manually "
1605 "configured ones.\n",
1606 CARD_BUS_ID(card), cmd->hdr.return_code);
1607 }
1608 return 0;
1609 }
1610
1611 static int qeth_l3_get_unique_id(struct qeth_card *card)
1612 {
1613 int rc = 0;
1614 struct qeth_cmd_buffer *iob;
1615 struct qeth_ipa_cmd *cmd;
1616
1617 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1618
1619 if (!qeth_is_supported(card, IPA_IPV6)) {
1620 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1621 UNIQUE_ID_NOT_BY_CARD;
1622 return 0;
1623 }
1624
1625 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1626 QETH_PROT_IPV6);
1627 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1628 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1629 card->info.unique_id;
1630
1631 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1632 return rc;
1633 }
1634
1635 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1636 struct net_device *dev)
1637 {
1638 if (dev->type == ARPHRD_IEEE802_TR)
1639 ip_tr_mc_map(ipm, mac);
1640 else
1641 ip_eth_mc_map(ipm, mac);
1642 }
1643
1644 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1645 {
1646 struct qeth_ipaddr *ipm;
1647 struct ip_mc_list *im4;
1648 char buf[MAX_ADDR_LEN];
1649
1650 QETH_DBF_TEXT(TRACE, 4, "addmc");
1651 for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1652 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1653 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1654 if (!ipm)
1655 continue;
1656 ipm->u.a4.addr = im4->multiaddr;
1657 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1658 ipm->is_multicast = 1;
1659 if (!qeth_l3_add_ip(card, ipm))
1660 kfree(ipm);
1661 }
1662 }
1663
1664 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1665 {
1666 struct in_device *in_dev;
1667 struct vlan_group *vg;
1668 int i;
1669
1670 QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1671 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1672 return;
1673
1674 vg = card->vlangrp;
1675 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1676 struct net_device *netdev = vlan_group_get_device(vg, i);
1677 if (netdev == NULL ||
1678 !(netdev->flags & IFF_UP))
1679 continue;
1680 in_dev = in_dev_get(netdev);
1681 if (!in_dev)
1682 continue;
1683 read_lock(&in_dev->mc_list_lock);
1684 qeth_l3_add_mc(card, in_dev);
1685 read_unlock(&in_dev->mc_list_lock);
1686 in_dev_put(in_dev);
1687 }
1688 }
1689
1690 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1691 {
1692 struct in_device *in4_dev;
1693
1694 QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1695 in4_dev = in_dev_get(card->dev);
1696 if (in4_dev == NULL)
1697 return;
1698 read_lock(&in4_dev->mc_list_lock);
1699 qeth_l3_add_mc(card, in4_dev);
1700 qeth_l3_add_vlan_mc(card);
1701 read_unlock(&in4_dev->mc_list_lock);
1702 in_dev_put(in4_dev);
1703 }
1704
1705 #ifdef CONFIG_QETH_IPV6
1706 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1707 {
1708 struct qeth_ipaddr *ipm;
1709 struct ifmcaddr6 *im6;
1710 char buf[MAX_ADDR_LEN];
1711
1712 QETH_DBF_TEXT(TRACE, 4, "addmc6");
1713 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1714 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1715 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1716 if (!ipm)
1717 continue;
1718 ipm->is_multicast = 1;
1719 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1720 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1721 sizeof(struct in6_addr));
1722 if (!qeth_l3_add_ip(card, ipm))
1723 kfree(ipm);
1724 }
1725 }
1726
1727 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1728 {
1729 struct inet6_dev *in_dev;
1730 struct vlan_group *vg;
1731 int i;
1732
1733 QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1734 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1735 return;
1736
1737 vg = card->vlangrp;
1738 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1739 struct net_device *netdev = vlan_group_get_device(vg, i);
1740 if (netdev == NULL ||
1741 !(netdev->flags & IFF_UP))
1742 continue;
1743 in_dev = in6_dev_get(netdev);
1744 if (!in_dev)
1745 continue;
1746 read_lock_bh(&in_dev->lock);
1747 qeth_l3_add_mc6(card, in_dev);
1748 read_unlock_bh(&in_dev->lock);
1749 in6_dev_put(in_dev);
1750 }
1751 }
1752
1753 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1754 {
1755 struct inet6_dev *in6_dev;
1756
1757 QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1758 if (!qeth_is_supported(card, IPA_IPV6))
1759 return ;
1760 in6_dev = in6_dev_get(card->dev);
1761 if (in6_dev == NULL)
1762 return;
1763 read_lock_bh(&in6_dev->lock);
1764 qeth_l3_add_mc6(card, in6_dev);
1765 qeth_l3_add_vlan_mc6(card);
1766 read_unlock_bh(&in6_dev->lock);
1767 in6_dev_put(in6_dev);
1768 }
1769 #endif /* CONFIG_QETH_IPV6 */
1770
1771 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1772 unsigned short vid)
1773 {
1774 struct in_device *in_dev;
1775 struct in_ifaddr *ifa;
1776 struct qeth_ipaddr *addr;
1777
1778 QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1779
1780 in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1781 if (!in_dev)
1782 return;
1783 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1784 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1785 if (addr) {
1786 addr->u.a4.addr = ifa->ifa_address;
1787 addr->u.a4.mask = ifa->ifa_mask;
1788 addr->type = QETH_IP_TYPE_NORMAL;
1789 if (!qeth_l3_delete_ip(card, addr))
1790 kfree(addr);
1791 }
1792 }
1793 in_dev_put(in_dev);
1794 }
1795
1796 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1797 unsigned short vid)
1798 {
1799 #ifdef CONFIG_QETH_IPV6
1800 struct inet6_dev *in6_dev;
1801 struct inet6_ifaddr *ifa;
1802 struct qeth_ipaddr *addr;
1803
1804 QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1805
1806 in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1807 if (!in6_dev)
1808 return;
1809 for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1810 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1811 if (addr) {
1812 memcpy(&addr->u.a6.addr, &ifa->addr,
1813 sizeof(struct in6_addr));
1814 addr->u.a6.pfxlen = ifa->prefix_len;
1815 addr->type = QETH_IP_TYPE_NORMAL;
1816 if (!qeth_l3_delete_ip(card, addr))
1817 kfree(addr);
1818 }
1819 }
1820 in6_dev_put(in6_dev);
1821 #endif /* CONFIG_QETH_IPV6 */
1822 }
1823
1824 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1825 unsigned short vid)
1826 {
1827 if (!card->vlangrp)
1828 return;
1829 qeth_l3_free_vlan_addresses4(card, vid);
1830 qeth_l3_free_vlan_addresses6(card, vid);
1831 }
1832
1833 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1834 struct vlan_group *grp)
1835 {
1836 struct qeth_card *card = netdev_priv(dev);
1837 unsigned long flags;
1838
1839 QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1840 spin_lock_irqsave(&card->vlanlock, flags);
1841 card->vlangrp = grp;
1842 spin_unlock_irqrestore(&card->vlanlock, flags);
1843 }
1844
1845 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1846 {
1847 struct net_device *vlandev;
1848 struct qeth_card *card = (struct qeth_card *) dev->priv;
1849 struct in_device *in_dev;
1850
1851 if (card->info.type == QETH_CARD_TYPE_IQD)
1852 return;
1853
1854 vlandev = vlan_group_get_device(card->vlangrp, vid);
1855 vlandev->neigh_setup = qeth_l3_neigh_setup;
1856
1857 in_dev = in_dev_get(vlandev);
1858 #ifdef CONFIG_SYSCTL
1859 neigh_sysctl_unregister(in_dev->arp_parms);
1860 #endif
1861 neigh_parms_release(&arp_tbl, in_dev->arp_parms);
1862
1863 in_dev->arp_parms = neigh_parms_alloc(vlandev, &arp_tbl);
1864 #ifdef CONFIG_SYSCTL
1865 neigh_sysctl_register(vlandev, in_dev->arp_parms, NET_IPV4,
1866 NET_IPV4_NEIGH, "ipv4", NULL, NULL);
1867 #endif
1868 in_dev_put(in_dev);
1869 return;
1870 }
1871
1872 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1873 {
1874 struct qeth_card *card = netdev_priv(dev);
1875 unsigned long flags;
1876
1877 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1878 spin_lock_irqsave(&card->vlanlock, flags);
1879 /* unregister IP addresses of vlan device */
1880 qeth_l3_free_vlan_addresses(card, vid);
1881 vlan_group_set_device(card->vlangrp, vid, NULL);
1882 spin_unlock_irqrestore(&card->vlanlock, flags);
1883 qeth_l3_set_multicast_list(card->dev);
1884 }
1885
1886 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1887 struct sk_buff *skb, struct qeth_hdr *hdr)
1888 {
1889 unsigned short vlan_id = 0;
1890 __be16 prot;
1891 struct iphdr *ip_hdr;
1892 unsigned char tg_addr[MAX_ADDR_LEN];
1893
1894 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1895 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1896 ETH_P_IP);
1897 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1898 case QETH_CAST_MULTICAST:
1899 switch (prot) {
1900 #ifdef CONFIG_QETH_IPV6
1901 case __constant_htons(ETH_P_IPV6):
1902 ndisc_mc_map((struct in6_addr *)
1903 skb->data + 24,
1904 tg_addr, card->dev, 0);
1905 break;
1906 #endif
1907 case __constant_htons(ETH_P_IP):
1908 ip_hdr = (struct iphdr *)skb->data;
1909 (card->dev->type == ARPHRD_IEEE802_TR) ?
1910 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1911 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1912 break;
1913 default:
1914 memcpy(tg_addr, card->dev->broadcast,
1915 card->dev->addr_len);
1916 }
1917 card->stats.multicast++;
1918 skb->pkt_type = PACKET_MULTICAST;
1919 break;
1920 case QETH_CAST_BROADCAST:
1921 memcpy(tg_addr, card->dev->broadcast,
1922 card->dev->addr_len);
1923 card->stats.multicast++;
1924 skb->pkt_type = PACKET_BROADCAST;
1925 break;
1926 case QETH_CAST_UNICAST:
1927 case QETH_CAST_ANYCAST:
1928 case QETH_CAST_NOCAST:
1929 default:
1930 skb->pkt_type = PACKET_HOST;
1931 memcpy(tg_addr, card->dev->dev_addr,
1932 card->dev->addr_len);
1933 }
1934 card->dev->header_ops->create(skb, card->dev, prot, tg_addr,
1935 "FAKELL", card->dev->addr_len);
1936 }
1937
1938 #ifdef CONFIG_TR
1939 if (card->dev->type == ARPHRD_IEEE802_TR)
1940 skb->protocol = tr_type_trans(skb, card->dev);
1941 else
1942 #endif
1943 skb->protocol = eth_type_trans(skb, card->dev);
1944
1945 if (hdr->hdr.l3.ext_flags &
1946 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1947 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1948 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1949 }
1950
1951 skb->ip_summed = card->options.checksum_type;
1952 if (card->options.checksum_type == HW_CHECKSUMMING) {
1953 if ((hdr->hdr.l3.ext_flags &
1954 (QETH_HDR_EXT_CSUM_HDR_REQ |
1955 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1956 (QETH_HDR_EXT_CSUM_HDR_REQ |
1957 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1958 skb->ip_summed = CHECKSUM_UNNECESSARY;
1959 else
1960 skb->ip_summed = SW_CHECKSUMMING;
1961 }
1962
1963 return vlan_id;
1964 }
1965
1966 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
1967 struct qeth_qdio_buffer *buf, int index)
1968 {
1969 struct qdio_buffer_element *element;
1970 struct sk_buff *skb;
1971 struct qeth_hdr *hdr;
1972 int offset;
1973 __u16 vlan_tag = 0;
1974 unsigned int len;
1975
1976 /* get first element of current buffer */
1977 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
1978 offset = 0;
1979 if (card->options.performance_stats)
1980 card->perf_stats.bufs_rec++;
1981 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
1982 &offset, &hdr))) {
1983 skb->dev = card->dev;
1984 /* is device UP ? */
1985 if (!(card->dev->flags & IFF_UP)) {
1986 dev_kfree_skb_any(skb);
1987 continue;
1988 }
1989
1990 switch (hdr->hdr.l3.id) {
1991 case QETH_HEADER_TYPE_LAYER3:
1992 vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
1993 len = skb->len;
1994 if (vlan_tag)
1995 if (card->vlangrp)
1996 vlan_hwaccel_rx(skb, card->vlangrp,
1997 vlan_tag);
1998 else {
1999 dev_kfree_skb_any(skb);
2000 continue;
2001 }
2002 else
2003 netif_rx(skb);
2004 break;
2005 default:
2006 dev_kfree_skb_any(skb);
2007 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
2008 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2009 continue;
2010 }
2011
2012 card->dev->last_rx = jiffies;
2013 card->stats.rx_packets++;
2014 card->stats.rx_bytes += len;
2015 }
2016 }
2017
2018 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2019 struct qeth_card *card)
2020 {
2021 int rc = 0;
2022 struct vlan_group *vg;
2023 int i;
2024
2025 vg = card->vlangrp;
2026 if (!vg)
2027 return rc;
2028
2029 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2030 if (vlan_group_get_device(vg, i) == dev) {
2031 rc = QETH_VLAN_CARD;
2032 break;
2033 }
2034 }
2035
2036 if (rc && !(netdev_priv(vlan_dev_info(dev)->real_dev) == (void *)card))
2037 return 0;
2038
2039 return rc;
2040 }
2041
2042 static int qeth_l3_verify_dev(struct net_device *dev)
2043 {
2044 struct qeth_card *card;
2045 unsigned long flags;
2046 int rc = 0;
2047
2048 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2049 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2050 if (card->dev == dev) {
2051 rc = QETH_REAL_CARD;
2052 break;
2053 }
2054 rc = qeth_l3_verify_vlan_dev(dev, card);
2055 if (rc)
2056 break;
2057 }
2058 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2059
2060 return rc;
2061 }
2062
2063 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2064 {
2065 struct qeth_card *card = NULL;
2066 int rc;
2067
2068 rc = qeth_l3_verify_dev(dev);
2069 if (rc == QETH_REAL_CARD)
2070 card = netdev_priv(dev);
2071 else if (rc == QETH_VLAN_CARD)
2072 card = netdev_priv(vlan_dev_info(dev)->real_dev);
2073 if (card->options.layer2)
2074 card = NULL;
2075 QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2076 return card ;
2077 }
2078
2079 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2080 {
2081 int rc = 0;
2082
2083 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2084 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2085
2086 qeth_set_allowed_threads(card, 0, 1);
2087 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
2088 return -ERESTARTSYS;
2089 if (card->read.state == CH_STATE_UP &&
2090 card->write.state == CH_STATE_UP &&
2091 (card->state == CARD_STATE_UP)) {
2092 if (recovery_mode)
2093 qeth_l3_stop(card->dev);
2094 else {
2095 rtnl_lock();
2096 dev_close(card->dev);
2097 rtnl_unlock();
2098 }
2099 if (!card->use_hard_stop) {
2100 rc = qeth_send_stoplan(card);
2101 if (rc)
2102 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2103 }
2104 card->state = CARD_STATE_SOFTSETUP;
2105 }
2106 if (card->state == CARD_STATE_SOFTSETUP) {
2107 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2108 qeth_clear_ipacmd_list(card);
2109 card->state = CARD_STATE_HARDSETUP;
2110 }
2111 if (card->state == CARD_STATE_HARDSETUP) {
2112 if (!card->use_hard_stop &&
2113 (card->info.type != QETH_CARD_TYPE_IQD)) {
2114 rc = qeth_l3_put_unique_id(card);
2115 if (rc)
2116 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2117 }
2118 qeth_qdio_clear_card(card, 0);
2119 qeth_clear_qdio_buffers(card);
2120 qeth_clear_working_pool_list(card);
2121 card->state = CARD_STATE_DOWN;
2122 }
2123 if (card->state == CARD_STATE_DOWN) {
2124 qeth_clear_cmd_buffers(&card->read);
2125 qeth_clear_cmd_buffers(&card->write);
2126 }
2127 card->use_hard_stop = 0;
2128 return rc;
2129 }
2130
2131 static void qeth_l3_set_multicast_list(struct net_device *dev)
2132 {
2133 struct qeth_card *card = netdev_priv(dev);
2134
2135 QETH_DBF_TEXT(TRACE, 3, "setmulti");
2136 qeth_l3_delete_mc_addresses(card);
2137 qeth_l3_add_multicast_ipv4(card);
2138 #ifdef CONFIG_QETH_IPV6
2139 qeth_l3_add_multicast_ipv6(card);
2140 #endif
2141 qeth_l3_set_ip_addr_list(card);
2142 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2143 return;
2144 qeth_setadp_promisc_mode(card);
2145 }
2146
2147 static const char *qeth_l3_arp_get_error_cause(int *rc)
2148 {
2149 switch (*rc) {
2150 case QETH_IPA_ARP_RC_FAILED:
2151 *rc = -EIO;
2152 return "operation failed";
2153 case QETH_IPA_ARP_RC_NOTSUPP:
2154 *rc = -EOPNOTSUPP;
2155 return "operation not supported";
2156 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2157 *rc = -EINVAL;
2158 return "argument out of range";
2159 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2160 *rc = -EOPNOTSUPP;
2161 return "query operation not supported";
2162 case QETH_IPA_ARP_RC_Q_NO_DATA:
2163 *rc = -ENOENT;
2164 return "no query data available";
2165 default:
2166 return "unknown error";
2167 }
2168 }
2169
2170 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2171 {
2172 int tmp;
2173 int rc;
2174
2175 QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2176
2177 /*
2178 * currently GuestLAN only supports the ARP assist function
2179 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2180 * thus we say EOPNOTSUPP for this ARP function
2181 */
2182 if (card->info.guestlan)
2183 return -EOPNOTSUPP;
2184 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2185 PRINT_WARN("ARP processing not supported "
2186 "on %s!\n", QETH_CARD_IFNAME(card));
2187 return -EOPNOTSUPP;
2188 }
2189 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2190 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2191 no_entries);
2192 if (rc) {
2193 tmp = rc;
2194 PRINT_WARN("Could not set number of ARP entries on %s: "
2195 "%s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2196 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2197 }
2198 return rc;
2199 }
2200
2201 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2202 struct qeth_arp_query_data *qdata, int entry_size,
2203 int uentry_size)
2204 {
2205 char *entry_ptr;
2206 char *uentry_ptr;
2207 int i;
2208
2209 entry_ptr = (char *)&qdata->data;
2210 uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2211 for (i = 0; i < qdata->no_entries; ++i) {
2212 /* strip off 32 bytes "media specific information" */
2213 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2214 entry_ptr += entry_size;
2215 uentry_ptr += uentry_size;
2216 }
2217 }
2218
2219 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2220 struct qeth_reply *reply, unsigned long data)
2221 {
2222 struct qeth_ipa_cmd *cmd;
2223 struct qeth_arp_query_data *qdata;
2224 struct qeth_arp_query_info *qinfo;
2225 int entry_size;
2226 int uentry_size;
2227 int i;
2228
2229 QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2230
2231 qinfo = (struct qeth_arp_query_info *) reply->param;
2232 cmd = (struct qeth_ipa_cmd *) data;
2233 if (cmd->hdr.return_code) {
2234 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2235 return 0;
2236 }
2237 if (cmd->data.setassparms.hdr.return_code) {
2238 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2239 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2240 return 0;
2241 }
2242 qdata = &cmd->data.setassparms.data.query_arp;
2243 switch (qdata->reply_bits) {
2244 case 5:
2245 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2246 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2247 uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2248 break;
2249 case 7:
2250 /* fall through to default */
2251 default:
2252 /* tr is the same as eth -> entry7 */
2253 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2254 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2255 uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2256 break;
2257 }
2258 /* check if there is enough room in userspace */
2259 if ((qinfo->udata_len - qinfo->udata_offset) <
2260 qdata->no_entries * uentry_size){
2261 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2262 cmd->hdr.return_code = -ENOMEM;
2263 PRINT_WARN("query ARP user space buffer is too small for "
2264 "the returned number of ARP entries. "
2265 "Aborting query!\n");
2266 goto out_error;
2267 }
2268 QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2269 cmd->data.setassparms.hdr.number_of_replies);
2270 QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2271 QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2272
2273 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2274 /* strip off "media specific information" */
2275 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2276 uentry_size);
2277 } else
2278 /*copy entries to user buffer*/
2279 memcpy(qinfo->udata + qinfo->udata_offset,
2280 (char *)&qdata->data, qdata->no_entries*uentry_size);
2281
2282 qinfo->no_entries += qdata->no_entries;
2283 qinfo->udata_offset += (qdata->no_entries*uentry_size);
2284 /* check if all replies received ... */
2285 if (cmd->data.setassparms.hdr.seq_no <
2286 cmd->data.setassparms.hdr.number_of_replies)
2287 return 1;
2288 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2289 /* keep STRIP_ENTRIES flag so the user program can distinguish
2290 * stripped entries from normal ones */
2291 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2292 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2293 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2294 return 0;
2295 out_error:
2296 i = 0;
2297 memcpy(qinfo->udata, &i, 4);
2298 return 0;
2299 }
2300
2301 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2302 struct qeth_cmd_buffer *iob, int len,
2303 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2304 unsigned long),
2305 void *reply_param)
2306 {
2307 QETH_DBF_TEXT(TRACE, 4, "sendarp");
2308
2309 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2310 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2311 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2312 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2313 reply_cb, reply_param);
2314 }
2315
2316 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2317 {
2318 struct qeth_cmd_buffer *iob;
2319 struct qeth_arp_query_info qinfo = {0, };
2320 int tmp;
2321 int rc;
2322
2323 QETH_DBF_TEXT(TRACE, 3, "arpquery");
2324
2325 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2326 IPA_ARP_PROCESSING)) {
2327 PRINT_WARN("ARP processing not supported "
2328 "on %s!\n", QETH_CARD_IFNAME(card));
2329 return -EOPNOTSUPP;
2330 }
2331 /* get size of userspace buffer and mask_bits -> 6 bytes */
2332 if (copy_from_user(&qinfo, udata, 6))
2333 return -EFAULT;
2334 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2335 if (!qinfo.udata)
2336 return -ENOMEM;
2337 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2338 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2339 IPA_CMD_ASS_ARP_QUERY_INFO,
2340 sizeof(int), QETH_PROT_IPV4);
2341
2342 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2343 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2344 qeth_l3_arp_query_cb, (void *)&qinfo);
2345 if (rc) {
2346 tmp = rc;
2347 PRINT_WARN("Error while querying ARP cache on %s: %s "
2348 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2349 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2350 if (copy_to_user(udata, qinfo.udata, 4))
2351 rc = -EFAULT;
2352 } else {
2353 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2354 rc = -EFAULT;
2355 }
2356 kfree(qinfo.udata);
2357 return rc;
2358 }
2359
2360 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2361 struct qeth_arp_cache_entry *entry)
2362 {
2363 struct qeth_cmd_buffer *iob;
2364 char buf[16];
2365 int tmp;
2366 int rc;
2367
2368 QETH_DBF_TEXT(TRACE, 3, "arpadent");
2369
2370 /*
2371 * currently GuestLAN only supports the ARP assist function
2372 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2373 * thus we say EOPNOTSUPP for this ARP function
2374 */
2375 if (card->info.guestlan)
2376 return -EOPNOTSUPP;
2377 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2378 PRINT_WARN("ARP processing not supported "
2379 "on %s!\n", QETH_CARD_IFNAME(card));
2380 return -EOPNOTSUPP;
2381 }
2382
2383 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2384 IPA_CMD_ASS_ARP_ADD_ENTRY,
2385 sizeof(struct qeth_arp_cache_entry),
2386 QETH_PROT_IPV4);
2387 rc = qeth_l3_send_setassparms(card, iob,
2388 sizeof(struct qeth_arp_cache_entry),
2389 (unsigned long) entry,
2390 qeth_l3_default_setassparms_cb, NULL);
2391 if (rc) {
2392 tmp = rc;
2393 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2394 PRINT_WARN("Could not add ARP entry for address %s on %s: "
2395 "%s (0x%x/%d)\n",
2396 buf, QETH_CARD_IFNAME(card),
2397 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2398 }
2399 return rc;
2400 }
2401
2402 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2403 struct qeth_arp_cache_entry *entry)
2404 {
2405 struct qeth_cmd_buffer *iob;
2406 char buf[16] = {0, };
2407 int tmp;
2408 int rc;
2409
2410 QETH_DBF_TEXT(TRACE, 3, "arprment");
2411
2412 /*
2413 * currently GuestLAN only supports the ARP assist function
2414 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2415 * thus we say EOPNOTSUPP for this ARP function
2416 */
2417 if (card->info.guestlan)
2418 return -EOPNOTSUPP;
2419 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2420 PRINT_WARN("ARP processing not supported "
2421 "on %s!\n", QETH_CARD_IFNAME(card));
2422 return -EOPNOTSUPP;
2423 }
2424 memcpy(buf, entry, 12);
2425 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2426 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2427 12,
2428 QETH_PROT_IPV4);
2429 rc = qeth_l3_send_setassparms(card, iob,
2430 12, (unsigned long)buf,
2431 qeth_l3_default_setassparms_cb, NULL);
2432 if (rc) {
2433 tmp = rc;
2434 memset(buf, 0, 16);
2435 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2436 PRINT_WARN("Could not delete ARP entry for address %s on %s: "
2437 "%s (0x%x/%d)\n",
2438 buf, QETH_CARD_IFNAME(card),
2439 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2440 }
2441 return rc;
2442 }
2443
2444 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2445 {
2446 int rc;
2447 int tmp;
2448
2449 QETH_DBF_TEXT(TRACE, 3, "arpflush");
2450
2451 /*
2452 * currently GuestLAN only supports the ARP assist function
2453 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2454 * thus we say EOPNOTSUPP for this ARP function
2455 */
2456 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2457 return -EOPNOTSUPP;
2458 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2459 PRINT_WARN("ARP processing not supported "
2460 "on %s!\n", QETH_CARD_IFNAME(card));
2461 return -EOPNOTSUPP;
2462 }
2463 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2464 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2465 if (rc) {
2466 tmp = rc;
2467 PRINT_WARN("Could not flush ARP cache on %s: %s (0x%x/%d)\n",
2468 QETH_CARD_IFNAME(card),
2469 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2470 }
2471 return rc;
2472 }
2473
2474 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2475 {
2476 struct qeth_card *card = netdev_priv(dev);
2477 struct qeth_arp_cache_entry arp_entry;
2478 struct mii_ioctl_data *mii_data;
2479 int rc = 0;
2480
2481 if (!card)
2482 return -ENODEV;
2483
2484 if ((card->state != CARD_STATE_UP) &&
2485 (card->state != CARD_STATE_SOFTSETUP))
2486 return -ENODEV;
2487
2488 switch (cmd) {
2489 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2490 if (!capable(CAP_NET_ADMIN)) {
2491 rc = -EPERM;
2492 break;
2493 }
2494 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2495 break;
2496 case SIOC_QETH_ARP_QUERY_INFO:
2497 if (!capable(CAP_NET_ADMIN)) {
2498 rc = -EPERM;
2499 break;
2500 }
2501 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2502 break;
2503 case SIOC_QETH_ARP_ADD_ENTRY:
2504 if (!capable(CAP_NET_ADMIN)) {
2505 rc = -EPERM;
2506 break;
2507 }
2508 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2509 sizeof(struct qeth_arp_cache_entry)))
2510 rc = -EFAULT;
2511 else
2512 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2513 break;
2514 case SIOC_QETH_ARP_REMOVE_ENTRY:
2515 if (!capable(CAP_NET_ADMIN)) {
2516 rc = -EPERM;
2517 break;
2518 }
2519 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2520 sizeof(struct qeth_arp_cache_entry)))
2521 rc = -EFAULT;
2522 else
2523 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2524 break;
2525 case SIOC_QETH_ARP_FLUSH_CACHE:
2526 if (!capable(CAP_NET_ADMIN)) {
2527 rc = -EPERM;
2528 break;
2529 }
2530 rc = qeth_l3_arp_flush_cache(card);
2531 break;
2532 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2533 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2534 break;
2535 case SIOC_QETH_GET_CARD_TYPE:
2536 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2537 !card->info.guestlan)
2538 return 1;
2539 return 0;
2540 break;
2541 case SIOCGMIIPHY:
2542 mii_data = if_mii(rq);
2543 mii_data->phy_id = 0;
2544 break;
2545 case SIOCGMIIREG:
2546 mii_data = if_mii(rq);
2547 if (mii_data->phy_id != 0)
2548 rc = -EINVAL;
2549 else
2550 mii_data->val_out = qeth_mdio_read(dev,
2551 mii_data->phy_id,
2552 mii_data->reg_num);
2553 break;
2554 default:
2555 rc = -EOPNOTSUPP;
2556 }
2557 if (rc)
2558 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2559 return rc;
2560 }
2561
2562 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2563 struct sk_buff *skb, int ipv, int cast_type)
2564 {
2565 memset(hdr, 0, sizeof(struct qeth_hdr));
2566 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2567 hdr->hdr.l3.ext_flags = 0;
2568
2569 /*
2570 * before we're going to overwrite this location with next hop ip.
2571 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2572 */
2573 if (card->vlangrp && vlan_tx_tag_present(skb)) {
2574 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2575 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2576 else
2577 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2578 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2579 }
2580
2581 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2582 if (ipv == 4) {
2583 /* IPv4 */
2584 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2585 memset(hdr->hdr.l3.dest_addr, 0, 12);
2586 if ((skb->dst) && (skb->dst->neighbour)) {
2587 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2588 *((u32 *) skb->dst->neighbour->primary_key);
2589 } else {
2590 /* fill in destination address used in ip header */
2591 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2592 ip_hdr(skb)->daddr;
2593 }
2594 } else if (ipv == 6) {
2595 /* IPv6 */
2596 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2597 if (card->info.type == QETH_CARD_TYPE_IQD)
2598 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2599 if ((skb->dst) && (skb->dst->neighbour)) {
2600 memcpy(hdr->hdr.l3.dest_addr,
2601 skb->dst->neighbour->primary_key, 16);
2602 } else {
2603 /* fill in destination address used in ip header */
2604 memcpy(hdr->hdr.l3.dest_addr,
2605 &ipv6_hdr(skb)->daddr, 16);
2606 }
2607 } else {
2608 /* passthrough */
2609 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2610 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2611 sizeof(__u16), skb->dev->broadcast, 6)) {
2612 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2613 QETH_HDR_PASSTHRU;
2614 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2615 skb->dev->broadcast, 6)) {
2616 /* broadcast? */
2617 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2618 QETH_HDR_PASSTHRU;
2619 } else {
2620 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2621 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2622 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2623 }
2624 }
2625 }
2626
2627 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2628 {
2629 int rc;
2630 u16 *tag;
2631 struct qeth_hdr *hdr = NULL;
2632 int elements_needed = 0;
2633 struct qeth_card *card = netdev_priv(dev);
2634 struct sk_buff *new_skb = NULL;
2635 int ipv = qeth_get_ip_version(skb);
2636 int cast_type = qeth_get_cast_type(card, skb);
2637 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2638 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2639 int tx_bytes = skb->len;
2640 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2641 struct qeth_eddp_context *ctx = NULL;
2642
2643 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2644 (skb->protocol != htons(ETH_P_IPV6)) &&
2645 (skb->protocol != htons(ETH_P_IP)))
2646 goto tx_drop;
2647
2648 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2649 card->stats.tx_carrier_errors++;
2650 goto tx_drop;
2651 }
2652
2653 if ((cast_type == RTN_BROADCAST) &&
2654 (card->info.broadcast_capable == 0))
2655 goto tx_drop;
2656
2657 if (card->options.performance_stats) {
2658 card->perf_stats.outbound_cnt++;
2659 card->perf_stats.outbound_start_time = qeth_get_micros();
2660 }
2661
2662 /* create a clone with writeable headroom */
2663 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) +
2664 VLAN_HLEN);
2665 if (!new_skb)
2666 goto tx_drop;
2667
2668 if (card->info.type == QETH_CARD_TYPE_IQD) {
2669 skb_pull(new_skb, ETH_HLEN);
2670 } else {
2671 if (new_skb->protocol == htons(ETH_P_IP)) {
2672 if (card->dev->type == ARPHRD_IEEE802_TR)
2673 skb_pull(new_skb, TR_HLEN);
2674 else
2675 skb_pull(new_skb, ETH_HLEN);
2676 }
2677
2678 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2679 vlan_tx_tag_present(new_skb)) {
2680 skb_push(new_skb, VLAN_HLEN);
2681 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2682 skb_copy_to_linear_data_offset(new_skb, 4,
2683 new_skb->data + 8, 4);
2684 skb_copy_to_linear_data_offset(new_skb, 8,
2685 new_skb->data + 12, 4);
2686 tag = (u16 *)(new_skb->data + 12);
2687 *tag = __constant_htons(ETH_P_8021Q);
2688 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2689 VLAN_TX_SKB_CB(new_skb)->magic = 0;
2690 }
2691 }
2692
2693 netif_stop_queue(dev);
2694
2695 if (skb_is_gso(new_skb))
2696 large_send = card->options.large_send;
2697
2698 /* fix hardware limitation: as long as we do not have sbal
2699 * chaining we can not send long frag lists so we temporary
2700 * switch to EDDP
2701 */
2702 if ((large_send == QETH_LARGE_SEND_TSO) &&
2703 ((skb_shinfo(new_skb)->nr_frags + 2) > 16))
2704 large_send = QETH_LARGE_SEND_EDDP;
2705
2706 if ((large_send == QETH_LARGE_SEND_TSO) &&
2707 (cast_type == RTN_UNSPEC)) {
2708 hdr = (struct qeth_hdr *)skb_push(new_skb,
2709 sizeof(struct qeth_hdr_tso));
2710 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2711 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2712 qeth_tso_fill_header(card, hdr, new_skb);
2713 elements_needed++;
2714 } else {
2715 hdr = (struct qeth_hdr *)skb_push(new_skb,
2716 sizeof(struct qeth_hdr));
2717 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2718 }
2719
2720 if (large_send == QETH_LARGE_SEND_EDDP) {
2721 /* new_skb is not owned by a socket so we use skb to get
2722 * the protocol
2723 */
2724 ctx = qeth_eddp_create_context(card, new_skb, hdr,
2725 skb->sk->sk_protocol);
2726 if (ctx == NULL) {
2727 PRINT_WARN("could not create eddp context\n");
2728 goto tx_drop;
2729 }
2730 } else {
2731 int elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2732 elements_needed);
2733 if (!elems)
2734 goto tx_drop;
2735 elements_needed += elems;
2736 }
2737
2738 if ((large_send == QETH_LARGE_SEND_NO) &&
2739 (new_skb->ip_summed == CHECKSUM_PARTIAL))
2740 qeth_tx_csum(new_skb);
2741
2742 if (card->info.type != QETH_CARD_TYPE_IQD)
2743 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2744 elements_needed, ctx);
2745 else
2746 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2747 elements_needed, ctx);
2748
2749 if (!rc) {
2750 card->stats.tx_packets++;
2751 card->stats.tx_bytes += tx_bytes;
2752 if (new_skb != skb)
2753 dev_kfree_skb_any(skb);
2754 if (card->options.performance_stats) {
2755 if (large_send != QETH_LARGE_SEND_NO) {
2756 card->perf_stats.large_send_bytes += tx_bytes;
2757 card->perf_stats.large_send_cnt++;
2758 }
2759 if (skb_shinfo(new_skb)->nr_frags > 0) {
2760 card->perf_stats.sg_skbs_sent++;
2761 /* nr_frags + skb->data */
2762 card->perf_stats.sg_frags_sent +=
2763 skb_shinfo(new_skb)->nr_frags + 1;
2764 }
2765 }
2766
2767 if (ctx != NULL) {
2768 qeth_eddp_put_context(ctx);
2769 dev_kfree_skb_any(new_skb);
2770 }
2771 } else {
2772 if (ctx != NULL)
2773 qeth_eddp_put_context(ctx);
2774
2775 if (rc == -EBUSY) {
2776 if (new_skb != skb)
2777 dev_kfree_skb_any(new_skb);
2778 return NETDEV_TX_BUSY;
2779 } else
2780 goto tx_drop;
2781 }
2782
2783 netif_wake_queue(dev);
2784 if (card->options.performance_stats)
2785 card->perf_stats.outbound_time += qeth_get_micros() -
2786 card->perf_stats.outbound_start_time;
2787 return rc;
2788
2789 tx_drop:
2790 card->stats.tx_dropped++;
2791 card->stats.tx_errors++;
2792 if ((new_skb != skb) && new_skb)
2793 dev_kfree_skb_any(new_skb);
2794 dev_kfree_skb_any(skb);
2795 return NETDEV_TX_OK;
2796 }
2797
2798 static int qeth_l3_open(struct net_device *dev)
2799 {
2800 struct qeth_card *card = netdev_priv(dev);
2801
2802 QETH_DBF_TEXT(TRACE, 4, "qethopen");
2803 if (card->state != CARD_STATE_SOFTSETUP)
2804 return -ENODEV;
2805 card->data.state = CH_STATE_UP;
2806 card->state = CARD_STATE_UP;
2807 card->dev->flags |= IFF_UP;
2808 netif_start_queue(dev);
2809
2810 if (!card->lan_online && netif_carrier_ok(dev))
2811 netif_carrier_off(dev);
2812 return 0;
2813 }
2814
2815 static int qeth_l3_stop(struct net_device *dev)
2816 {
2817 struct qeth_card *card = netdev_priv(dev);
2818
2819 QETH_DBF_TEXT(TRACE, 4, "qethstop");
2820 netif_tx_disable(dev);
2821 card->dev->flags &= ~IFF_UP;
2822 if (card->state == CARD_STATE_UP)
2823 card->state = CARD_STATE_SOFTSETUP;
2824 return 0;
2825 }
2826
2827 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2828 {
2829 struct qeth_card *card = netdev_priv(dev);
2830
2831 return (card->options.checksum_type == HW_CHECKSUMMING);
2832 }
2833
2834 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2835 {
2836 struct qeth_card *card = netdev_priv(dev);
2837 enum qeth_card_states old_state;
2838 enum qeth_checksum_types csum_type;
2839
2840 if ((card->state != CARD_STATE_UP) &&
2841 (card->state != CARD_STATE_DOWN))
2842 return -EPERM;
2843
2844 if (data)
2845 csum_type = HW_CHECKSUMMING;
2846 else
2847 csum_type = SW_CHECKSUMMING;
2848
2849 if (card->options.checksum_type != csum_type) {
2850 old_state = card->state;
2851 if (card->state == CARD_STATE_UP)
2852 __qeth_l3_set_offline(card->gdev, 1);
2853 card->options.checksum_type = csum_type;
2854 if (old_state == CARD_STATE_UP)
2855 __qeth_l3_set_online(card->gdev, 1);
2856 }
2857 return 0;
2858 }
2859
2860 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2861 {
2862 struct qeth_card *card = netdev_priv(dev);
2863
2864 if (data) {
2865 if (card->options.large_send == QETH_LARGE_SEND_NO) {
2866 if (card->info.type == QETH_CARD_TYPE_IQD)
2867 card->options.large_send = QETH_LARGE_SEND_EDDP;
2868 else
2869 card->options.large_send = QETH_LARGE_SEND_TSO;
2870 dev->features |= NETIF_F_TSO;
2871 }
2872 } else {
2873 dev->features &= ~NETIF_F_TSO;
2874 card->options.large_send = QETH_LARGE_SEND_NO;
2875 }
2876 return 0;
2877 }
2878
2879 static struct ethtool_ops qeth_l3_ethtool_ops = {
2880 .get_link = ethtool_op_get_link,
2881 .get_tx_csum = ethtool_op_get_tx_csum,
2882 .set_tx_csum = ethtool_op_set_tx_hw_csum,
2883 .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
2884 .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
2885 .get_sg = ethtool_op_get_sg,
2886 .set_sg = ethtool_op_set_sg,
2887 .get_tso = ethtool_op_get_tso,
2888 .set_tso = qeth_l3_ethtool_set_tso,
2889 .get_strings = qeth_core_get_strings,
2890 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2891 .get_stats_count = qeth_core_get_stats_count,
2892 .get_drvinfo = qeth_core_get_drvinfo,
2893 .get_settings = qeth_core_ethtool_get_settings,
2894 };
2895
2896 /*
2897 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2898 * NOARP on the netdevice is no option because it also turns off neighbor
2899 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2900 * arp resolution but we want the hard header (packet socket will work
2901 * e.g. tcpdump)
2902 */
2903 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2904 {
2905 n->nud_state = NUD_NOARP;
2906 memcpy(n->ha, "FAKELL", 6);
2907 n->output = n->ops->connected_output;
2908 return 0;
2909 }
2910
2911 static int
2912 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2913 {
2914 if (np->tbl->family == AF_INET)
2915 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2916
2917 return 0;
2918 }
2919
2920 static int qeth_l3_setup_netdev(struct qeth_card *card)
2921 {
2922 if (card->info.type == QETH_CARD_TYPE_OSAE) {
2923 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2924 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2925 #ifdef CONFIG_TR
2926 card->dev = alloc_trdev(0);
2927 #endif
2928 if (!card->dev)
2929 return -ENODEV;
2930 } else {
2931 card->dev = alloc_etherdev(0);
2932 if (!card->dev)
2933 return -ENODEV;
2934 card->dev->neigh_setup = qeth_l3_neigh_setup;
2935
2936 /*IPv6 address autoconfiguration stuff*/
2937 qeth_l3_get_unique_id(card);
2938 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2939 card->dev->dev_id = card->info.unique_id &
2940 0xffff;
2941 }
2942 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2943 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
2944 if (!card->dev)
2945 return -ENODEV;
2946 card->dev->flags |= IFF_NOARP;
2947 qeth_l3_iqd_read_initial_mac(card);
2948 } else
2949 return -ENODEV;
2950
2951 card->dev->hard_start_xmit = qeth_l3_hard_start_xmit;
2952 card->dev->priv = card;
2953 card->dev->tx_timeout = &qeth_tx_timeout;
2954 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2955 card->dev->open = qeth_l3_open;
2956 card->dev->stop = qeth_l3_stop;
2957 card->dev->do_ioctl = qeth_l3_do_ioctl;
2958 card->dev->get_stats = qeth_get_stats;
2959 card->dev->change_mtu = qeth_change_mtu;
2960 card->dev->set_multicast_list = qeth_l3_set_multicast_list;
2961 card->dev->vlan_rx_register = qeth_l3_vlan_rx_register;
2962 card->dev->vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid;
2963 card->dev->vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid;
2964 card->dev->mtu = card->info.initial_mtu;
2965 card->dev->set_mac_address = NULL;
2966 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
2967 card->dev->features |= NETIF_F_HW_VLAN_TX |
2968 NETIF_F_HW_VLAN_RX |
2969 NETIF_F_HW_VLAN_FILTER;
2970
2971 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2972 return register_netdev(card->dev);
2973 }
2974
2975 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
2976 unsigned int status, unsigned int qdio_err,
2977 unsigned int siga_err, unsigned int queue, int first_element,
2978 int count, unsigned long card_ptr)
2979 {
2980 struct net_device *net_dev;
2981 struct qeth_card *card;
2982 struct qeth_qdio_buffer *buffer;
2983 int index;
2984 int i;
2985
2986 card = (struct qeth_card *) card_ptr;
2987 net_dev = card->dev;
2988 if (card->options.performance_stats) {
2989 card->perf_stats.inbound_cnt++;
2990 card->perf_stats.inbound_start_time = qeth_get_micros();
2991 }
2992 if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
2993 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
2994 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
2995 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2996 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
2997 first_element, count);
2998 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status);
2999 qeth_schedule_recovery(card);
3000 return;
3001 }
3002 }
3003 for (i = first_element; i < (first_element + count); ++i) {
3004 index = i % QDIO_MAX_BUFFERS_PER_Q;
3005 buffer = &card->qdio.in_q->bufs[index];
3006 if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
3007 qeth_check_qdio_errors(buffer->buffer,
3008 qdio_err, siga_err, "qinerr")))
3009 qeth_l3_process_inbound_buffer(card, buffer, index);
3010 /* clear buffer and give back to hardware */
3011 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3012 qeth_queue_input_buffer(card, index);
3013 }
3014 if (card->options.performance_stats)
3015 card->perf_stats.inbound_time += qeth_get_micros() -
3016 card->perf_stats.inbound_start_time;
3017 }
3018
3019 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3020 {
3021 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3022
3023 qeth_l3_create_device_attributes(&gdev->dev);
3024 card->options.layer2 = 0;
3025 card->discipline.input_handler = (qdio_handler_t *)
3026 qeth_l3_qdio_input_handler;
3027 card->discipline.output_handler = (qdio_handler_t *)
3028 qeth_qdio_output_handler;
3029 card->discipline.recover = qeth_l3_recover;
3030 return 0;
3031 }
3032
3033 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3034 {
3035 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3036
3037 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3038
3039 if (cgdev->state == CCWGROUP_ONLINE) {
3040 card->use_hard_stop = 1;
3041 qeth_l3_set_offline(cgdev);
3042 }
3043
3044 if (card->dev) {
3045 unregister_netdev(card->dev);
3046 card->dev = NULL;
3047 }
3048
3049 qeth_l3_remove_device_attributes(&cgdev->dev);
3050 qeth_l3_clear_ip_list(card, 0, 0);
3051 qeth_l3_clear_ipato_list(card);
3052 return;
3053 }
3054
3055 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3056 {
3057 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3058 int rc = 0;
3059 enum qeth_card_states recover_flag;
3060
3061 BUG_ON(!card);
3062 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3063 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3064
3065 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3066 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) {
3067 PRINT_WARN("set_online of card %s interrupted by user!\n",
3068 CARD_BUS_ID(card));
3069 return -ERESTARTSYS;
3070 }
3071
3072 recover_flag = card->state;
3073 rc = ccw_device_set_online(CARD_RDEV(card));
3074 if (rc) {
3075 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3076 return -EIO;
3077 }
3078 rc = ccw_device_set_online(CARD_WDEV(card));
3079 if (rc) {
3080 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3081 return -EIO;
3082 }
3083 rc = ccw_device_set_online(CARD_DDEV(card));
3084 if (rc) {
3085 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3086 return -EIO;
3087 }
3088
3089 rc = qeth_core_hardsetup_card(card);
3090 if (rc) {
3091 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3092 goto out_remove;
3093 }
3094
3095 qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3096
3097 if (!card->dev && qeth_l3_setup_netdev(card))
3098 goto out_remove;
3099
3100 card->state = CARD_STATE_HARDSETUP;
3101 qeth_print_status_message(card);
3102
3103 /* softsetup */
3104 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3105
3106 rc = qeth_send_startlan(card);
3107 if (rc) {
3108 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3109 if (rc == 0xe080) {
3110 PRINT_WARN("LAN on card %s if offline! "
3111 "Waiting for STARTLAN from card.\n",
3112 CARD_BUS_ID(card));
3113 card->lan_online = 0;
3114 }
3115 return rc;
3116 } else
3117 card->lan_online = 1;
3118 qeth_set_large_send(card, card->options.large_send);
3119
3120 rc = qeth_l3_setadapter_parms(card);
3121 if (rc)
3122 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3123 rc = qeth_l3_start_ipassists(card);
3124 if (rc)
3125 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3126 rc = qeth_l3_setrouting_v4(card);
3127 if (rc)
3128 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3129 rc = qeth_l3_setrouting_v6(card);
3130 if (rc)
3131 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3132 netif_tx_disable(card->dev);
3133
3134 rc = qeth_init_qdio_queues(card);
3135 if (rc) {
3136 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3137 goto out_remove;
3138 }
3139 card->state = CARD_STATE_SOFTSETUP;
3140 netif_carrier_on(card->dev);
3141
3142 qeth_set_allowed_threads(card, 0xffffffff, 0);
3143 if (recover_flag == CARD_STATE_RECOVER) {
3144 if (recovery_mode)
3145 qeth_l3_open(card->dev);
3146 else {
3147 rtnl_lock();
3148 dev_open(card->dev);
3149 rtnl_unlock();
3150 }
3151 qeth_l3_set_multicast_list(card->dev);
3152 }
3153 /* let user_space know that device is online */
3154 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3155 return 0;
3156 out_remove:
3157 card->use_hard_stop = 1;
3158 qeth_l3_stop_card(card, 0);
3159 ccw_device_set_offline(CARD_DDEV(card));
3160 ccw_device_set_offline(CARD_WDEV(card));
3161 ccw_device_set_offline(CARD_RDEV(card));
3162 if (recover_flag == CARD_STATE_RECOVER)
3163 card->state = CARD_STATE_RECOVER;
3164 else
3165 card->state = CARD_STATE_DOWN;
3166 return -ENODEV;
3167 }
3168
3169 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3170 {
3171 return __qeth_l3_set_online(gdev, 0);
3172 }
3173
3174 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3175 int recovery_mode)
3176 {
3177 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3178 int rc = 0, rc2 = 0, rc3 = 0;
3179 enum qeth_card_states recover_flag;
3180
3181 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3182 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3183
3184 if (card->dev && netif_carrier_ok(card->dev))
3185 netif_carrier_off(card->dev);
3186 recover_flag = card->state;
3187 if (qeth_l3_stop_card(card, recovery_mode) == -ERESTARTSYS) {
3188 PRINT_WARN("Stopping card %s interrupted by user!\n",
3189 CARD_BUS_ID(card));
3190 return -ERESTARTSYS;
3191 }
3192 rc = ccw_device_set_offline(CARD_DDEV(card));
3193 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3194 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3195 if (!rc)
3196 rc = (rc2) ? rc2 : rc3;
3197 if (rc)
3198 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3199 if (recover_flag == CARD_STATE_UP)
3200 card->state = CARD_STATE_RECOVER;
3201 /* let user_space know that device is offline */
3202 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3203 return 0;
3204 }
3205
3206 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3207 {
3208 return __qeth_l3_set_offline(cgdev, 0);
3209 }
3210
3211 static int qeth_l3_recover(void *ptr)
3212 {
3213 struct qeth_card *card;
3214 int rc = 0;
3215
3216 card = (struct qeth_card *) ptr;
3217 QETH_DBF_TEXT(TRACE, 2, "recover1");
3218 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3219 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3220 return 0;
3221 QETH_DBF_TEXT(TRACE, 2, "recover2");
3222 PRINT_WARN("Recovery of device %s started ...\n",
3223 CARD_BUS_ID(card));
3224 card->use_hard_stop = 1;
3225 __qeth_l3_set_offline(card->gdev, 1);
3226 rc = __qeth_l3_set_online(card->gdev, 1);
3227 /* don't run another scheduled recovery */
3228 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3229 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3230 if (!rc)
3231 PRINT_INFO("Device %s successfully recovered!\n",
3232 CARD_BUS_ID(card));
3233 else
3234 PRINT_INFO("Device %s could not be recovered!\n",
3235 CARD_BUS_ID(card));
3236 return 0;
3237 }
3238
3239 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3240 {
3241 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3242 qeth_l3_clear_ip_list(card, 0, 0);
3243 qeth_qdio_clear_card(card, 0);
3244 qeth_clear_qdio_buffers(card);
3245 }
3246
3247 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3248 .probe = qeth_l3_probe_device,
3249 .remove = qeth_l3_remove_device,
3250 .set_online = qeth_l3_set_online,
3251 .set_offline = qeth_l3_set_offline,
3252 .shutdown = qeth_l3_shutdown,
3253 };
3254 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3255
3256 static int qeth_l3_ip_event(struct notifier_block *this,
3257 unsigned long event, void *ptr)
3258 {
3259 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3260 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3261 struct qeth_ipaddr *addr;
3262 struct qeth_card *card;
3263
3264 if (dev_net(dev) != &init_net)
3265 return NOTIFY_DONE;
3266
3267 QETH_DBF_TEXT(TRACE, 3, "ipevent");
3268 card = qeth_l3_get_card_from_dev(dev);
3269 if (!card)
3270 return NOTIFY_DONE;
3271
3272 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3273 if (addr != NULL) {
3274 addr->u.a4.addr = ifa->ifa_address;
3275 addr->u.a4.mask = ifa->ifa_mask;
3276 addr->type = QETH_IP_TYPE_NORMAL;
3277 } else
3278 goto out;
3279
3280 switch (event) {
3281 case NETDEV_UP:
3282 if (!qeth_l3_add_ip(card, addr))
3283 kfree(addr);
3284 break;
3285 case NETDEV_DOWN:
3286 if (!qeth_l3_delete_ip(card, addr))
3287 kfree(addr);
3288 break;
3289 default:
3290 break;
3291 }
3292 qeth_l3_set_ip_addr_list(card);
3293 out:
3294 return NOTIFY_DONE;
3295 }
3296
3297 static struct notifier_block qeth_l3_ip_notifier = {
3298 qeth_l3_ip_event,
3299 NULL,
3300 };
3301
3302 #ifdef CONFIG_QETH_IPV6
3303 /**
3304 * IPv6 event handler
3305 */
3306 static int qeth_l3_ip6_event(struct notifier_block *this,
3307 unsigned long event, void *ptr)
3308 {
3309 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3310 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3311 struct qeth_ipaddr *addr;
3312 struct qeth_card *card;
3313
3314 QETH_DBF_TEXT(TRACE, 3, "ip6event");
3315
3316 card = qeth_l3_get_card_from_dev(dev);
3317 if (!card)
3318 return NOTIFY_DONE;
3319 if (!qeth_is_supported(card, IPA_IPV6))
3320 return NOTIFY_DONE;
3321
3322 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3323 if (addr != NULL) {
3324 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3325 addr->u.a6.pfxlen = ifa->prefix_len;
3326 addr->type = QETH_IP_TYPE_NORMAL;
3327 } else
3328 goto out;
3329
3330 switch (event) {
3331 case NETDEV_UP:
3332 if (!qeth_l3_add_ip(card, addr))
3333 kfree(addr);
3334 break;
3335 case NETDEV_DOWN:
3336 if (!qeth_l3_delete_ip(card, addr))
3337 kfree(addr);
3338 break;
3339 default:
3340 break;
3341 }
3342 qeth_l3_set_ip_addr_list(card);
3343 out:
3344 return NOTIFY_DONE;
3345 }
3346
3347 static struct notifier_block qeth_l3_ip6_notifier = {
3348 qeth_l3_ip6_event,
3349 NULL,
3350 };
3351 #endif
3352
3353 static int qeth_l3_register_notifiers(void)
3354 {
3355 int rc;
3356
3357 QETH_DBF_TEXT(TRACE, 5, "regnotif");
3358 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3359 if (rc)
3360 return rc;
3361 #ifdef CONFIG_QETH_IPV6
3362 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3363 if (rc) {
3364 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3365 return rc;
3366 }
3367 #else
3368 PRINT_WARN("layer 3 discipline no IPv6 support\n");
3369 #endif
3370 return 0;
3371 }
3372
3373 static void qeth_l3_unregister_notifiers(void)
3374 {
3375
3376 QETH_DBF_TEXT(TRACE, 5, "unregnot");
3377 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3378 #ifdef CONFIG_QETH_IPV6
3379 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3380 #endif /* QETH_IPV6 */
3381 }
3382
3383 static int __init qeth_l3_init(void)
3384 {
3385 int rc = 0;
3386
3387 PRINT_INFO("register layer 3 discipline\n");
3388 rc = qeth_l3_register_notifiers();
3389 return rc;
3390 }
3391
3392 static void __exit qeth_l3_exit(void)
3393 {
3394 qeth_l3_unregister_notifiers();
3395 PRINT_INFO("unregister layer 3 discipline\n");
3396 }
3397
3398 module_init(qeth_l3_init);
3399 module_exit(qeth_l3_exit);
3400 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3401 MODULE_DESCRIPTION("qeth layer 3 discipline");
3402 MODULE_LICENSE("GPL");
Linux with added FPC-III support