?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
qeth: add statistics for tx csum
[linux-2.6/mini2440.git] / drivers / s390 / net / qeth_l3_main.c
blobfea50bdc8f4183944cddfee8971cc3c5717d30e2
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 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/etherdevice.h>
20 #include <linux/mii.h>
21 #include <linux/ip.h>
22 #include <linux/reboot.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25
26 #include <net/ip.h>
27 #include <net/arp.h>
28
29 #include "qeth_l3.h"
30 #include "qeth_core_offl.h"
31
32 static int qeth_l3_set_offline(struct ccwgroup_device *);
33 static int qeth_l3_recover(void *);
34 static int qeth_l3_stop(struct net_device *);
35 static void qeth_l3_set_multicast_list(struct net_device *);
36 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
37 static int qeth_l3_register_addr_entry(struct qeth_card *,
38 struct qeth_ipaddr *);
39 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
40 struct qeth_ipaddr *);
41 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
42 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
43
44
45 static int qeth_l3_isxdigit(char *buf)
46 {
47 while (*buf) {
48 if (!isxdigit(*buf++))
49 return 0;
50 }
51 return 1;
52 }
53
54 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
55 {
56 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
57 }
58
59 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
60 {
61 int count = 0, rc = 0;
62 int in[4];
63 char c;
64
65 rc = sscanf(buf, "%u.%u.%u.%u%c",
66 &in[0], &in[1], &in[2], &in[3], &c);
67 if (rc != 4 && (rc != 5 || c != '\n'))
68 return -EINVAL;
69 for (count = 0; count < 4; count++) {
70 if (in[count] > 255)
71 return -EINVAL;
72 addr[count] = in[count];
73 }
74 return 0;
75 }
76
77 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
78 {
79 sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
80 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
81 addr[0], addr[1], addr[2], addr[3],
82 addr[4], addr[5], addr[6], addr[7],
83 addr[8], addr[9], addr[10], addr[11],
84 addr[12], addr[13], addr[14], addr[15]);
85 }
86
87 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
88 {
89 const char *end, *end_tmp, *start;
90 __u16 *in;
91 char num[5];
92 int num2, cnt, out, found, save_cnt;
93 unsigned short in_tmp[8] = {0, };
94
95 cnt = out = found = save_cnt = num2 = 0;
96 end = start = buf;
97 in = (__u16 *) addr;
98 memset(in, 0, 16);
99 while (*end) {
100 end = strchr(start, ':');
101 if (end == NULL) {
102 end = buf + strlen(buf);
103 end_tmp = strchr(start, '\n');
104 if (end_tmp != NULL)
105 end = end_tmp;
106 out = 1;
107 }
108 if ((end - start)) {
109 memset(num, 0, 5);
110 if ((end - start) > 4)
111 return -EINVAL;
112 memcpy(num, start, end - start);
113 if (!qeth_l3_isxdigit(num))
114 return -EINVAL;
115 sscanf(start, "%x", &num2);
116 if (found)
117 in_tmp[save_cnt++] = num2;
118 else
119 in[cnt++] = num2;
120 if (out)
121 break;
122 } else {
123 if (found)
124 return -EINVAL;
125 found = 1;
126 }
127 start = ++end;
128 }
129 if (cnt + save_cnt > 8)
130 return -EINVAL;
131 cnt = 7;
132 while (save_cnt)
133 in[cnt--] = in_tmp[--save_cnt];
134 return 0;
135 }
136
137 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
138 char *buf)
139 {
140 if (proto == QETH_PROT_IPV4)
141 qeth_l3_ipaddr4_to_string(addr, buf);
142 else if (proto == QETH_PROT_IPV6)
143 qeth_l3_ipaddr6_to_string(addr, buf);
144 }
145
146 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
147 __u8 *addr)
148 {
149 if (proto == QETH_PROT_IPV4)
150 return qeth_l3_string_to_ipaddr4(buf, addr);
151 else if (proto == QETH_PROT_IPV6)
152 return qeth_l3_string_to_ipaddr6(buf, addr);
153 else
154 return -EINVAL;
155 }
156
157 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
158 {
159 int i, j;
160 u8 octet;
161
162 for (i = 0; i < len; ++i) {
163 octet = addr[i];
164 for (j = 7; j >= 0; --j) {
165 bits[i*8 + j] = octet & 1;
166 octet >>= 1;
167 }
168 }
169 }
170
171 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
172 struct qeth_ipaddr *addr)
173 {
174 struct qeth_ipato_entry *ipatoe;
175 u8 addr_bits[128] = {0, };
176 u8 ipatoe_bits[128] = {0, };
177 int rc = 0;
178
179 if (!card->ipato.enabled)
180 return 0;
181
182 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
183 (addr->proto == QETH_PROT_IPV4)? 4:16);
184 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
185 if (addr->proto != ipatoe->proto)
186 continue;
187 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
188 (ipatoe->proto == QETH_PROT_IPV4) ?
189 4 : 16);
190 if (addr->proto == QETH_PROT_IPV4)
191 rc = !memcmp(addr_bits, ipatoe_bits,
192 min(32, ipatoe->mask_bits));
193 else
194 rc = !memcmp(addr_bits, ipatoe_bits,
195 min(128, ipatoe->mask_bits));
196 if (rc)
197 break;
198 }
199 /* invert? */
200 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
201 rc = !rc;
202 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
203 rc = !rc;
204
205 return rc;
206 }
207
208 /*
209 * Add IP to be added to todo list. If there is already an "add todo"
210 * in this list we just incremenent the reference count.
211 * Returns 0 if we just incremented reference count.
212 */
213 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
214 struct qeth_ipaddr *addr, int add)
215 {
216 struct qeth_ipaddr *tmp, *t;
217 int found = 0;
218
219 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
220 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
221 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
222 return 0;
223 if ((tmp->proto == QETH_PROT_IPV4) &&
224 (addr->proto == QETH_PROT_IPV4) &&
225 (tmp->type == addr->type) &&
226 (tmp->is_multicast == addr->is_multicast) &&
227 (tmp->u.a4.addr == addr->u.a4.addr) &&
228 (tmp->u.a4.mask == addr->u.a4.mask)) {
229 found = 1;
230 break;
231 }
232 if ((tmp->proto == QETH_PROT_IPV6) &&
233 (addr->proto == QETH_PROT_IPV6) &&
234 (tmp->type == addr->type) &&
235 (tmp->is_multicast == addr->is_multicast) &&
236 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
237 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
238 sizeof(struct in6_addr)) == 0)) {
239 found = 1;
240 break;
241 }
242 }
243 if (found) {
244 if (addr->users != 0)
245 tmp->users += addr->users;
246 else
247 tmp->users += add ? 1 : -1;
248 if (tmp->users == 0) {
249 list_del(&tmp->entry);
250 kfree(tmp);
251 }
252 return 0;
253 } else {
254 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
255 list_add(&addr->entry, card->ip_tbd_list);
256 else {
257 if (addr->users == 0)
258 addr->users += add ? 1 : -1;
259 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
260 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
261 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
262 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
263 }
264 list_add_tail(&addr->entry, card->ip_tbd_list);
265 }
266 return 1;
267 }
268 }
269
270 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
271 {
272 unsigned long flags;
273 int rc = 0;
274
275 QETH_DBF_TEXT(TRACE, 4, "delip");
276
277 if (addr->proto == QETH_PROT_IPV4)
278 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
279 else {
280 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
281 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
282 }
283 spin_lock_irqsave(&card->ip_lock, flags);
284 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
285 spin_unlock_irqrestore(&card->ip_lock, flags);
286 return rc;
287 }
288
289 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
290 {
291 unsigned long flags;
292 int rc = 0;
293
294 QETH_DBF_TEXT(TRACE, 4, "addip");
295 if (addr->proto == QETH_PROT_IPV4)
296 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
297 else {
298 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
299 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
300 }
301 spin_lock_irqsave(&card->ip_lock, flags);
302 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
303 spin_unlock_irqrestore(&card->ip_lock, flags);
304 return rc;
305 }
306
307
308 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
309 enum qeth_prot_versions prot)
310 {
311 struct qeth_ipaddr *addr;
312
313 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
314 if (addr == NULL) {
315 return NULL;
316 }
317 addr->type = QETH_IP_TYPE_NORMAL;
318 addr->proto = prot;
319 return addr;
320 }
321
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 *type = NO_ROUTER;
653 }
654
655 int qeth_l3_setrouting_v4(struct qeth_card *card)
656 {
657 int rc;
658
659 QETH_DBF_TEXT(TRACE, 3, "setrtg4");
660
661 qeth_l3_correct_routing_type(card, &card->options.route4.type,
662 QETH_PROT_IPV4);
663
664 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
665 QETH_PROT_IPV4);
666 if (rc) {
667 card->options.route4.type = NO_ROUTER;
668 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
669 " on %s. Type set to 'no router'.\n", rc,
670 QETH_CARD_IFNAME(card));
671 }
672 return rc;
673 }
674
675 int qeth_l3_setrouting_v6(struct qeth_card *card)
676 {
677 int rc = 0;
678
679 QETH_DBF_TEXT(TRACE, 3, "setrtg6");
680 #ifdef CONFIG_QETH_IPV6
681
682 if (!qeth_is_supported(card, IPA_IPV6))
683 return 0;
684 qeth_l3_correct_routing_type(card, &card->options.route6.type,
685 QETH_PROT_IPV6);
686
687 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
688 QETH_PROT_IPV6);
689 if (rc) {
690 card->options.route6.type = NO_ROUTER;
691 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
692 " on %s. Type set to 'no router'.\n", rc,
693 QETH_CARD_IFNAME(card));
694 }
695 #endif
696 return rc;
697 }
698
699 /*
700 * IP address takeover related functions
701 */
702 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
703 {
704
705 struct qeth_ipato_entry *ipatoe, *tmp;
706 unsigned long flags;
707
708 spin_lock_irqsave(&card->ip_lock, flags);
709 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
710 list_del(&ipatoe->entry);
711 kfree(ipatoe);
712 }
713 spin_unlock_irqrestore(&card->ip_lock, flags);
714 }
715
716 int qeth_l3_add_ipato_entry(struct qeth_card *card,
717 struct qeth_ipato_entry *new)
718 {
719 struct qeth_ipato_entry *ipatoe;
720 unsigned long flags;
721 int rc = 0;
722
723 QETH_DBF_TEXT(TRACE, 2, "addipato");
724 spin_lock_irqsave(&card->ip_lock, flags);
725 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
726 if (ipatoe->proto != new->proto)
727 continue;
728 if (!memcmp(ipatoe->addr, new->addr,
729 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
730 (ipatoe->mask_bits == new->mask_bits)) {
731 rc = -EEXIST;
732 break;
733 }
734 }
735 if (!rc)
736 list_add_tail(&new->entry, &card->ipato.entries);
737
738 spin_unlock_irqrestore(&card->ip_lock, flags);
739 return rc;
740 }
741
742 void qeth_l3_del_ipato_entry(struct qeth_card *card,
743 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
744 {
745 struct qeth_ipato_entry *ipatoe, *tmp;
746 unsigned long flags;
747
748 QETH_DBF_TEXT(TRACE, 2, "delipato");
749 spin_lock_irqsave(&card->ip_lock, flags);
750 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
751 if (ipatoe->proto != proto)
752 continue;
753 if (!memcmp(ipatoe->addr, addr,
754 (proto == QETH_PROT_IPV4)? 4:16) &&
755 (ipatoe->mask_bits == mask_bits)) {
756 list_del(&ipatoe->entry);
757 kfree(ipatoe);
758 }
759 }
760 spin_unlock_irqrestore(&card->ip_lock, flags);
761 }
762
763 /*
764 * VIPA related functions
765 */
766 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
767 const u8 *addr)
768 {
769 struct qeth_ipaddr *ipaddr;
770 unsigned long flags;
771 int rc = 0;
772
773 ipaddr = qeth_l3_get_addr_buffer(proto);
774 if (ipaddr) {
775 if (proto == QETH_PROT_IPV4) {
776 QETH_DBF_TEXT(TRACE, 2, "addvipa4");
777 memcpy(&ipaddr->u.a4.addr, addr, 4);
778 ipaddr->u.a4.mask = 0;
779 } else if (proto == QETH_PROT_IPV6) {
780 QETH_DBF_TEXT(TRACE, 2, "addvipa6");
781 memcpy(&ipaddr->u.a6.addr, addr, 16);
782 ipaddr->u.a6.pfxlen = 0;
783 }
784 ipaddr->type = QETH_IP_TYPE_VIPA;
785 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
786 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
787 } else
788 return -ENOMEM;
789 spin_lock_irqsave(&card->ip_lock, flags);
790 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
791 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
792 rc = -EEXIST;
793 spin_unlock_irqrestore(&card->ip_lock, flags);
794 if (rc) {
795 return rc;
796 }
797 if (!qeth_l3_add_ip(card, ipaddr))
798 kfree(ipaddr);
799 qeth_l3_set_ip_addr_list(card);
800 return rc;
801 }
802
803 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
804 const u8 *addr)
805 {
806 struct qeth_ipaddr *ipaddr;
807
808 ipaddr = qeth_l3_get_addr_buffer(proto);
809 if (ipaddr) {
810 if (proto == QETH_PROT_IPV4) {
811 QETH_DBF_TEXT(TRACE, 2, "delvipa4");
812 memcpy(&ipaddr->u.a4.addr, addr, 4);
813 ipaddr->u.a4.mask = 0;
814 } else if (proto == QETH_PROT_IPV6) {
815 QETH_DBF_TEXT(TRACE, 2, "delvipa6");
816 memcpy(&ipaddr->u.a6.addr, addr, 16);
817 ipaddr->u.a6.pfxlen = 0;
818 }
819 ipaddr->type = QETH_IP_TYPE_VIPA;
820 } else
821 return;
822 if (!qeth_l3_delete_ip(card, ipaddr))
823 kfree(ipaddr);
824 qeth_l3_set_ip_addr_list(card);
825 }
826
827 /*
828 * proxy ARP related functions
829 */
830 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
831 const u8 *addr)
832 {
833 struct qeth_ipaddr *ipaddr;
834 unsigned long flags;
835 int rc = 0;
836
837 ipaddr = qeth_l3_get_addr_buffer(proto);
838 if (ipaddr) {
839 if (proto == QETH_PROT_IPV4) {
840 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
841 memcpy(&ipaddr->u.a4.addr, addr, 4);
842 ipaddr->u.a4.mask = 0;
843 } else if (proto == QETH_PROT_IPV6) {
844 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
845 memcpy(&ipaddr->u.a6.addr, addr, 16);
846 ipaddr->u.a6.pfxlen = 0;
847 }
848 ipaddr->type = QETH_IP_TYPE_RXIP;
849 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
850 ipaddr->del_flags = 0;
851 } else
852 return -ENOMEM;
853 spin_lock_irqsave(&card->ip_lock, flags);
854 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
855 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
856 rc = -EEXIST;
857 spin_unlock_irqrestore(&card->ip_lock, flags);
858 if (rc) {
859 return rc;
860 }
861 if (!qeth_l3_add_ip(card, ipaddr))
862 kfree(ipaddr);
863 qeth_l3_set_ip_addr_list(card);
864 return 0;
865 }
866
867 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
868 const u8 *addr)
869 {
870 struct qeth_ipaddr *ipaddr;
871
872 ipaddr = qeth_l3_get_addr_buffer(proto);
873 if (ipaddr) {
874 if (proto == QETH_PROT_IPV4) {
875 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
876 memcpy(&ipaddr->u.a4.addr, addr, 4);
877 ipaddr->u.a4.mask = 0;
878 } else if (proto == QETH_PROT_IPV6) {
879 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
880 memcpy(&ipaddr->u.a6.addr, addr, 16);
881 ipaddr->u.a6.pfxlen = 0;
882 }
883 ipaddr->type = QETH_IP_TYPE_RXIP;
884 } else
885 return;
886 if (!qeth_l3_delete_ip(card, ipaddr))
887 kfree(ipaddr);
888 qeth_l3_set_ip_addr_list(card);
889 }
890
891 static int qeth_l3_register_addr_entry(struct qeth_card *card,
892 struct qeth_ipaddr *addr)
893 {
894 char buf[50];
895 int rc = 0;
896 int cnt = 3;
897
898 if (addr->proto == QETH_PROT_IPV4) {
899 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
900 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
901 } else if (addr->proto == QETH_PROT_IPV6) {
902 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
903 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
904 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
905 } else {
906 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
907 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
908 }
909 do {
910 if (addr->is_multicast)
911 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
912 else
913 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
914 addr->set_flags);
915 if (rc)
916 QETH_DBF_TEXT(TRACE, 2, "failed");
917 } while ((--cnt > 0) && rc);
918 if (rc) {
919 QETH_DBF_TEXT(TRACE, 2, "FAILED");
920 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
921 dev_warn(&card->gdev->dev,
922 "Registering IP address %s failed\n", buf);
923 }
924 return rc;
925 }
926
927 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
928 struct qeth_ipaddr *addr)
929 {
930 int rc = 0;
931
932 if (addr->proto == QETH_PROT_IPV4) {
933 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
934 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
935 } else if (addr->proto == QETH_PROT_IPV6) {
936 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
937 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
938 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
939 } else {
940 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
941 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
942 }
943 if (addr->is_multicast)
944 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
945 else
946 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
947 addr->del_flags);
948 if (rc)
949 QETH_DBF_TEXT(TRACE, 2, "failed");
950
951 return rc;
952 }
953
954 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
955 {
956 if (cast_type == RTN_MULTICAST)
957 return QETH_CAST_MULTICAST;
958 if (cast_type == RTN_BROADCAST)
959 return QETH_CAST_BROADCAST;
960 return QETH_CAST_UNICAST;
961 }
962
963 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
964 {
965 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
966 if (cast_type == RTN_MULTICAST)
967 return ct | QETH_CAST_MULTICAST;
968 if (cast_type == RTN_ANYCAST)
969 return ct | QETH_CAST_ANYCAST;
970 if (cast_type == RTN_BROADCAST)
971 return ct | QETH_CAST_BROADCAST;
972 return ct | QETH_CAST_UNICAST;
973 }
974
975 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
976 __u32 mode)
977 {
978 int rc;
979 struct qeth_cmd_buffer *iob;
980 struct qeth_ipa_cmd *cmd;
981
982 QETH_DBF_TEXT(TRACE, 4, "adpmode");
983
984 iob = qeth_get_adapter_cmd(card, command,
985 sizeof(struct qeth_ipacmd_setadpparms));
986 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
987 cmd->data.setadapterparms.data.mode = mode;
988 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
989 NULL);
990 return rc;
991 }
992
993 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
994 {
995 int rc;
996
997 QETH_DBF_TEXT(TRACE, 4, "adphstr");
998
999 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1000 rc = qeth_l3_send_setadp_mode(card,
1001 IPA_SETADP_SET_BROADCAST_MODE,
1002 card->options.broadcast_mode);
1003 if (rc)
1004 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1005 "device %s: x%x\n",
1006 CARD_BUS_ID(card), rc);
1007 rc = qeth_l3_send_setadp_mode(card,
1008 IPA_SETADP_ALTER_MAC_ADDRESS,
1009 card->options.macaddr_mode);
1010 if (rc)
1011 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1012 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1013 return rc;
1014 }
1015 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1016 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1017 "to set broadcast mode, using ALLRINGS "
1018 "on device %s:\n", CARD_BUS_ID(card));
1019 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1020 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1021 "to set macaddr mode, using NONCANONICAL "
1022 "on device %s:\n", CARD_BUS_ID(card));
1023 return 0;
1024 }
1025
1026 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1027 {
1028 int rc;
1029
1030 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1031
1032 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1033 dev_info(&card->gdev->dev,
1034 "set adapter parameters not supported.\n");
1035 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1036 return 0;
1037 }
1038 rc = qeth_query_setadapterparms(card);
1039 if (rc) {
1040 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1041 "0x%x\n", dev_name(&card->gdev->dev), rc);
1042 return rc;
1043 }
1044 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1045 rc = qeth_setadpparms_change_macaddr(card);
1046 if (rc)
1047 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1048 " address failed\n");
1049 }
1050
1051 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1052 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1053 rc = qeth_l3_setadapter_hstr(card);
1054
1055 return rc;
1056 }
1057
1058 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1059 struct qeth_reply *reply, unsigned long data)
1060 {
1061 struct qeth_ipa_cmd *cmd;
1062
1063 QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1064
1065 cmd = (struct qeth_ipa_cmd *) data;
1066 if (cmd->hdr.return_code == 0) {
1067 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1068 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1069 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1070 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1071 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1072 }
1073 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1074 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1075 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1076 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1077 }
1078 return 0;
1079 }
1080
1081 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1082 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1083 __u16 len, enum qeth_prot_versions prot)
1084 {
1085 struct qeth_cmd_buffer *iob;
1086 struct qeth_ipa_cmd *cmd;
1087
1088 QETH_DBF_TEXT(TRACE, 4, "getasscm");
1089 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1090
1091 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1092 cmd->data.setassparms.hdr.assist_no = ipa_func;
1093 cmd->data.setassparms.hdr.length = 8 + len;
1094 cmd->data.setassparms.hdr.command_code = cmd_code;
1095 cmd->data.setassparms.hdr.return_code = 0;
1096 cmd->data.setassparms.hdr.seq_no = 0;
1097
1098 return iob;
1099 }
1100
1101 static int qeth_l3_send_setassparms(struct qeth_card *card,
1102 struct qeth_cmd_buffer *iob, __u16 len, long data,
1103 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1104 unsigned long),
1105 void *reply_param)
1106 {
1107 int rc;
1108 struct qeth_ipa_cmd *cmd;
1109
1110 QETH_DBF_TEXT(TRACE, 4, "sendassp");
1111
1112 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1113 if (len <= sizeof(__u32))
1114 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1115 else /* (len > sizeof(__u32)) */
1116 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1117
1118 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1119 return rc;
1120 }
1121
1122 #ifdef CONFIG_QETH_IPV6
1123 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1124 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1125 {
1126 int rc;
1127 struct qeth_cmd_buffer *iob;
1128
1129 QETH_DBF_TEXT(TRACE, 4, "simassp6");
1130 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1131 0, QETH_PROT_IPV6);
1132 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1133 qeth_l3_default_setassparms_cb, NULL);
1134 return rc;
1135 }
1136 #endif
1137
1138 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1139 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1140 {
1141 int rc;
1142 int length = 0;
1143 struct qeth_cmd_buffer *iob;
1144
1145 QETH_DBF_TEXT(TRACE, 4, "simassp4");
1146 if (data)
1147 length = sizeof(__u32);
1148 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1149 length, QETH_PROT_IPV4);
1150 rc = qeth_l3_send_setassparms(card, iob, length, data,
1151 qeth_l3_default_setassparms_cb, NULL);
1152 return rc;
1153 }
1154
1155 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1156 {
1157 int rc;
1158
1159 QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1160
1161 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1162 dev_info(&card->gdev->dev,
1163 "ARP processing not supported on %s!\n",
1164 QETH_CARD_IFNAME(card));
1165 return 0;
1166 }
1167 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1168 IPA_CMD_ASS_START, 0);
1169 if (rc) {
1170 dev_warn(&card->gdev->dev,
1171 "Starting ARP processing support for %s failed\n",
1172 QETH_CARD_IFNAME(card));
1173 }
1174 return rc;
1175 }
1176
1177 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1178 {
1179 int rc;
1180
1181 QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1182
1183 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1184 dev_info(&card->gdev->dev,
1185 "Hardware IP fragmentation not supported on %s\n",
1186 QETH_CARD_IFNAME(card));
1187 return -EOPNOTSUPP;
1188 }
1189
1190 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1191 IPA_CMD_ASS_START, 0);
1192 if (rc) {
1193 dev_warn(&card->gdev->dev,
1194 "Starting IP fragmentation support for %s failed\n",
1195 QETH_CARD_IFNAME(card));
1196 } else
1197 dev_info(&card->gdev->dev,
1198 "Hardware IP fragmentation enabled \n");
1199 return rc;
1200 }
1201
1202 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1203 {
1204 int rc;
1205
1206 QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1207
1208 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1209 dev_info(&card->gdev->dev,
1210 "Inbound source MAC-address not supported on %s\n",
1211 QETH_CARD_IFNAME(card));
1212 return -EOPNOTSUPP;
1213 }
1214
1215 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1216 IPA_CMD_ASS_START, 0);
1217 if (rc)
1218 dev_warn(&card->gdev->dev,
1219 "Starting source MAC-address support for %s failed\n",
1220 QETH_CARD_IFNAME(card));
1221 return rc;
1222 }
1223
1224 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1225 {
1226 int rc = 0;
1227
1228 QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1229
1230 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1231 dev_info(&card->gdev->dev,
1232 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1233 return -EOPNOTSUPP;
1234 }
1235
1236 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1237 IPA_CMD_ASS_START, 0);
1238 if (rc) {
1239 dev_warn(&card->gdev->dev,
1240 "Starting VLAN support for %s failed\n",
1241 QETH_CARD_IFNAME(card));
1242 } else {
1243 dev_info(&card->gdev->dev, "VLAN enabled\n");
1244 }
1245 return rc;
1246 }
1247
1248 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1249 {
1250 int rc;
1251
1252 QETH_DBF_TEXT(TRACE, 3, "stmcast");
1253
1254 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1255 dev_info(&card->gdev->dev,
1256 "Multicast not supported on %s\n",
1257 QETH_CARD_IFNAME(card));
1258 return -EOPNOTSUPP;
1259 }
1260
1261 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1262 IPA_CMD_ASS_START, 0);
1263 if (rc) {
1264 dev_warn(&card->gdev->dev,
1265 "Starting multicast support for %s failed\n",
1266 QETH_CARD_IFNAME(card));
1267 } else {
1268 dev_info(&card->gdev->dev, "Multicast enabled\n");
1269 card->dev->flags |= IFF_MULTICAST;
1270 }
1271 return rc;
1272 }
1273
1274 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1275 struct qeth_reply *reply, unsigned long data)
1276 {
1277 struct qeth_ipa_cmd *cmd;
1278
1279 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1280
1281 cmd = (struct qeth_ipa_cmd *) data;
1282 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1283 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1284 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1285 } else {
1286 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1287 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1288 }
1289 QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1290 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1291 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1292 return 0;
1293 }
1294
1295 static int qeth_l3_query_ipassists(struct qeth_card *card,
1296 enum qeth_prot_versions prot)
1297 {
1298 int rc;
1299 struct qeth_cmd_buffer *iob;
1300
1301 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1302 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1303 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1304 return rc;
1305 }
1306
1307 #ifdef CONFIG_QETH_IPV6
1308 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1309 {
1310 int rc;
1311
1312 QETH_DBF_TEXT(TRACE, 3, "softipv6");
1313
1314 if (card->info.type == QETH_CARD_TYPE_IQD)
1315 goto out;
1316
1317 rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1318 if (rc) {
1319 dev_err(&card->gdev->dev,
1320 "Activating IPv6 support for %s failed\n",
1321 QETH_CARD_IFNAME(card));
1322 return rc;
1323 }
1324 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1325 IPA_CMD_ASS_START, 3);
1326 if (rc) {
1327 dev_err(&card->gdev->dev,
1328 "Activating IPv6 support for %s failed\n",
1329 QETH_CARD_IFNAME(card));
1330 return rc;
1331 }
1332 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1333 IPA_CMD_ASS_START);
1334 if (rc) {
1335 dev_err(&card->gdev->dev,
1336 "Activating IPv6 support for %s failed\n",
1337 QETH_CARD_IFNAME(card));
1338 return rc;
1339 }
1340 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1341 IPA_CMD_ASS_START);
1342 if (rc) {
1343 dev_warn(&card->gdev->dev,
1344 "Enabling the passthrough mode for %s failed\n",
1345 QETH_CARD_IFNAME(card));
1346 return rc;
1347 }
1348 out:
1349 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1350 return 0;
1351 }
1352 #endif
1353
1354 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1355 {
1356 int rc = 0;
1357
1358 QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1359
1360 if (!qeth_is_supported(card, IPA_IPV6)) {
1361 dev_info(&card->gdev->dev,
1362 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1363 return 0;
1364 }
1365 #ifdef CONFIG_QETH_IPV6
1366 rc = qeth_l3_softsetup_ipv6(card);
1367 #endif
1368 return rc ;
1369 }
1370
1371 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1372 {
1373 int rc;
1374
1375 QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1376 card->info.broadcast_capable = 0;
1377 if (!qeth_is_supported(card, IPA_FILTERING)) {
1378 dev_info(&card->gdev->dev,
1379 "Broadcast not supported on %s\n",
1380 QETH_CARD_IFNAME(card));
1381 rc = -EOPNOTSUPP;
1382 goto out;
1383 }
1384 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1385 IPA_CMD_ASS_START, 0);
1386 if (rc) {
1387 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1388 "%s failed\n", QETH_CARD_IFNAME(card));
1389 goto out;
1390 }
1391
1392 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1393 IPA_CMD_ASS_CONFIGURE, 1);
1394 if (rc) {
1395 dev_warn(&card->gdev->dev,
1396 "Setting up broadcast filtering for %s failed\n",
1397 QETH_CARD_IFNAME(card));
1398 goto out;
1399 }
1400 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1401 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1402 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1403 IPA_CMD_ASS_ENABLE, 1);
1404 if (rc) {
1405 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1406 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1407 goto out;
1408 }
1409 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1410 out:
1411 if (card->info.broadcast_capable)
1412 card->dev->flags |= IFF_BROADCAST;
1413 else
1414 card->dev->flags &= ~IFF_BROADCAST;
1415 return rc;
1416 }
1417
1418 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1419 {
1420 int rc;
1421
1422 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1423 IPA_CMD_ASS_START, 0);
1424 if (rc) {
1425 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1426 "failed, using SW checksumming\n",
1427 QETH_CARD_IFNAME(card));
1428 return rc;
1429 }
1430 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1431 IPA_CMD_ASS_ENABLE,
1432 card->info.csum_mask);
1433 if (rc) {
1434 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1435 "failed, using SW checksumming\n",
1436 QETH_CARD_IFNAME(card));
1437 return rc;
1438 }
1439 return 0;
1440 }
1441
1442 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1443 {
1444 int rc = 0;
1445
1446 QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1447
1448 if (card->options.checksum_type == NO_CHECKSUMMING) {
1449 dev_info(&card->gdev->dev,
1450 "Using no checksumming on %s.\n",
1451 QETH_CARD_IFNAME(card));
1452 return 0;
1453 }
1454 if (card->options.checksum_type == SW_CHECKSUMMING) {
1455 dev_info(&card->gdev->dev,
1456 "Using SW checksumming on %s.\n",
1457 QETH_CARD_IFNAME(card));
1458 return 0;
1459 }
1460 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1461 dev_info(&card->gdev->dev,
1462 "Inbound HW Checksumming not "
1463 "supported on %s,\ncontinuing "
1464 "using Inbound SW Checksumming\n",
1465 QETH_CARD_IFNAME(card));
1466 card->options.checksum_type = SW_CHECKSUMMING;
1467 return 0;
1468 }
1469 rc = qeth_l3_send_checksum_command(card);
1470 if (!rc)
1471 dev_info(&card->gdev->dev,
1472 "HW Checksumming (inbound) enabled\n");
1473
1474 return rc;
1475 }
1476
1477 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1478 {
1479 int rc;
1480
1481 QETH_DBF_TEXT(TRACE, 3, "sttso");
1482
1483 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1484 dev_info(&card->gdev->dev,
1485 "Outbound TSO not supported on %s\n",
1486 QETH_CARD_IFNAME(card));
1487 rc = -EOPNOTSUPP;
1488 } else {
1489 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1490 IPA_CMD_ASS_START, 0);
1491 if (rc)
1492 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1493 "segmentation offload for %s failed\n",
1494 QETH_CARD_IFNAME(card));
1495 else
1496 dev_info(&card->gdev->dev,
1497 "Outbound TSO enabled\n");
1498 }
1499 if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1500 card->options.large_send = QETH_LARGE_SEND_NO;
1501 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1502 }
1503 return rc;
1504 }
1505
1506 static int qeth_l3_start_ipassists(struct qeth_card *card)
1507 {
1508 QETH_DBF_TEXT(TRACE, 3, "strtipas");
1509 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1510 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1511 qeth_l3_start_ipa_source_mac(card); /* go on*/
1512 qeth_l3_start_ipa_vlan(card); /* go on*/
1513 qeth_l3_start_ipa_multicast(card); /* go on*/
1514 qeth_l3_start_ipa_ipv6(card); /* go on*/
1515 qeth_l3_start_ipa_broadcast(card); /* go on*/
1516 qeth_l3_start_ipa_checksum(card); /* go on*/
1517 qeth_l3_start_ipa_tso(card); /* go on*/
1518 return 0;
1519 }
1520
1521 static int qeth_l3_put_unique_id(struct qeth_card *card)
1522 {
1523
1524 int rc = 0;
1525 struct qeth_cmd_buffer *iob;
1526 struct qeth_ipa_cmd *cmd;
1527
1528 QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1529
1530 if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1531 UNIQUE_ID_NOT_BY_CARD)
1532 return -1;
1533 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1534 QETH_PROT_IPV6);
1535 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1536 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1537 card->info.unique_id;
1538 memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1539 card->dev->dev_addr, OSA_ADDR_LEN);
1540 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1541 return rc;
1542 }
1543
1544 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1545 struct qeth_reply *reply, unsigned long data)
1546 {
1547 struct qeth_ipa_cmd *cmd;
1548
1549 cmd = (struct qeth_ipa_cmd *) data;
1550 if (cmd->hdr.return_code == 0)
1551 memcpy(card->dev->dev_addr,
1552 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1553 else
1554 random_ether_addr(card->dev->dev_addr);
1555
1556 return 0;
1557 }
1558
1559 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1560 {
1561 int rc = 0;
1562 struct qeth_cmd_buffer *iob;
1563 struct qeth_ipa_cmd *cmd;
1564
1565 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1566
1567 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1568 QETH_PROT_IPV6);
1569 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1570 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1571 card->info.unique_id;
1572
1573 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1574 NULL);
1575 return rc;
1576 }
1577
1578 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1579 struct qeth_reply *reply, unsigned long data)
1580 {
1581 struct qeth_ipa_cmd *cmd;
1582
1583 cmd = (struct qeth_ipa_cmd *) data;
1584 if (cmd->hdr.return_code == 0)
1585 card->info.unique_id = *((__u16 *)
1586 &cmd->data.create_destroy_addr.unique_id[6]);
1587 else {
1588 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1589 UNIQUE_ID_NOT_BY_CARD;
1590 dev_warn(&card->gdev->dev, "The network adapter failed to "
1591 "generate a unique ID\n");
1592 }
1593 return 0;
1594 }
1595
1596 static int qeth_l3_get_unique_id(struct qeth_card *card)
1597 {
1598 int rc = 0;
1599 struct qeth_cmd_buffer *iob;
1600 struct qeth_ipa_cmd *cmd;
1601
1602 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1603
1604 if (!qeth_is_supported(card, IPA_IPV6)) {
1605 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1606 UNIQUE_ID_NOT_BY_CARD;
1607 return 0;
1608 }
1609
1610 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1611 QETH_PROT_IPV6);
1612 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1613 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1614 card->info.unique_id;
1615
1616 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1617 return rc;
1618 }
1619
1620 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1621 struct net_device *dev)
1622 {
1623 if (dev->type == ARPHRD_IEEE802_TR)
1624 ip_tr_mc_map(ipm, mac);
1625 else
1626 ip_eth_mc_map(ipm, mac);
1627 }
1628
1629 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1630 {
1631 struct qeth_ipaddr *ipm;
1632 struct ip_mc_list *im4;
1633 char buf[MAX_ADDR_LEN];
1634
1635 QETH_DBF_TEXT(TRACE, 4, "addmc");
1636 for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1637 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1638 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1639 if (!ipm)
1640 continue;
1641 ipm->u.a4.addr = im4->multiaddr;
1642 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1643 ipm->is_multicast = 1;
1644 if (!qeth_l3_add_ip(card, ipm))
1645 kfree(ipm);
1646 }
1647 }
1648
1649 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1650 {
1651 struct in_device *in_dev;
1652 struct vlan_group *vg;
1653 int i;
1654
1655 QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1656 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1657 return;
1658
1659 vg = card->vlangrp;
1660 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1661 struct net_device *netdev = vlan_group_get_device(vg, i);
1662 if (netdev == NULL ||
1663 !(netdev->flags & IFF_UP))
1664 continue;
1665 in_dev = in_dev_get(netdev);
1666 if (!in_dev)
1667 continue;
1668 read_lock(&in_dev->mc_list_lock);
1669 qeth_l3_add_mc(card, in_dev);
1670 read_unlock(&in_dev->mc_list_lock);
1671 in_dev_put(in_dev);
1672 }
1673 }
1674
1675 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1676 {
1677 struct in_device *in4_dev;
1678
1679 QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1680 in4_dev = in_dev_get(card->dev);
1681 if (in4_dev == NULL)
1682 return;
1683 read_lock(&in4_dev->mc_list_lock);
1684 qeth_l3_add_mc(card, in4_dev);
1685 qeth_l3_add_vlan_mc(card);
1686 read_unlock(&in4_dev->mc_list_lock);
1687 in_dev_put(in4_dev);
1688 }
1689
1690 #ifdef CONFIG_QETH_IPV6
1691 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1692 {
1693 struct qeth_ipaddr *ipm;
1694 struct ifmcaddr6 *im6;
1695 char buf[MAX_ADDR_LEN];
1696
1697 QETH_DBF_TEXT(TRACE, 4, "addmc6");
1698 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1699 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1700 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1701 if (!ipm)
1702 continue;
1703 ipm->is_multicast = 1;
1704 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1705 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1706 sizeof(struct in6_addr));
1707 if (!qeth_l3_add_ip(card, ipm))
1708 kfree(ipm);
1709 }
1710 }
1711
1712 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1713 {
1714 struct inet6_dev *in_dev;
1715 struct vlan_group *vg;
1716 int i;
1717
1718 QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1719 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1720 return;
1721
1722 vg = card->vlangrp;
1723 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1724 struct net_device *netdev = vlan_group_get_device(vg, i);
1725 if (netdev == NULL ||
1726 !(netdev->flags & IFF_UP))
1727 continue;
1728 in_dev = in6_dev_get(netdev);
1729 if (!in_dev)
1730 continue;
1731 read_lock_bh(&in_dev->lock);
1732 qeth_l3_add_mc6(card, in_dev);
1733 read_unlock_bh(&in_dev->lock);
1734 in6_dev_put(in_dev);
1735 }
1736 }
1737
1738 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1739 {
1740 struct inet6_dev *in6_dev;
1741
1742 QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1743 if (!qeth_is_supported(card, IPA_IPV6))
1744 return ;
1745 in6_dev = in6_dev_get(card->dev);
1746 if (in6_dev == NULL)
1747 return;
1748 read_lock_bh(&in6_dev->lock);
1749 qeth_l3_add_mc6(card, in6_dev);
1750 qeth_l3_add_vlan_mc6(card);
1751 read_unlock_bh(&in6_dev->lock);
1752 in6_dev_put(in6_dev);
1753 }
1754 #endif /* CONFIG_QETH_IPV6 */
1755
1756 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1757 unsigned short vid)
1758 {
1759 struct in_device *in_dev;
1760 struct in_ifaddr *ifa;
1761 struct qeth_ipaddr *addr;
1762
1763 QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1764
1765 in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1766 if (!in_dev)
1767 return;
1768 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1769 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1770 if (addr) {
1771 addr->u.a4.addr = ifa->ifa_address;
1772 addr->u.a4.mask = ifa->ifa_mask;
1773 addr->type = QETH_IP_TYPE_NORMAL;
1774 if (!qeth_l3_delete_ip(card, addr))
1775 kfree(addr);
1776 }
1777 }
1778 in_dev_put(in_dev);
1779 }
1780
1781 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1782 unsigned short vid)
1783 {
1784 #ifdef CONFIG_QETH_IPV6
1785 struct inet6_dev *in6_dev;
1786 struct inet6_ifaddr *ifa;
1787 struct qeth_ipaddr *addr;
1788
1789 QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1790
1791 in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1792 if (!in6_dev)
1793 return;
1794 for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1795 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1796 if (addr) {
1797 memcpy(&addr->u.a6.addr, &ifa->addr,
1798 sizeof(struct in6_addr));
1799 addr->u.a6.pfxlen = ifa->prefix_len;
1800 addr->type = QETH_IP_TYPE_NORMAL;
1801 if (!qeth_l3_delete_ip(card, addr))
1802 kfree(addr);
1803 }
1804 }
1805 in6_dev_put(in6_dev);
1806 #endif /* CONFIG_QETH_IPV6 */
1807 }
1808
1809 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1810 unsigned short vid)
1811 {
1812 if (!card->vlangrp)
1813 return;
1814 qeth_l3_free_vlan_addresses4(card, vid);
1815 qeth_l3_free_vlan_addresses6(card, vid);
1816 }
1817
1818 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1819 struct vlan_group *grp)
1820 {
1821 struct qeth_card *card = dev->ml_priv;
1822 unsigned long flags;
1823
1824 QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1825 spin_lock_irqsave(&card->vlanlock, flags);
1826 card->vlangrp = grp;
1827 spin_unlock_irqrestore(&card->vlanlock, flags);
1828 }
1829
1830 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1831 {
1832 return;
1833 }
1834
1835 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1836 {
1837 struct qeth_card *card = dev->ml_priv;
1838 unsigned long flags;
1839
1840 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1841 spin_lock_irqsave(&card->vlanlock, flags);
1842 /* unregister IP addresses of vlan device */
1843 qeth_l3_free_vlan_addresses(card, vid);
1844 vlan_group_set_device(card->vlangrp, vid, NULL);
1845 spin_unlock_irqrestore(&card->vlanlock, flags);
1846 qeth_l3_set_multicast_list(card->dev);
1847 }
1848
1849 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1850 struct sk_buff *skb, struct qeth_hdr *hdr)
1851 {
1852 unsigned short vlan_id = 0;
1853 __be16 prot;
1854 struct iphdr *ip_hdr;
1855 unsigned char tg_addr[MAX_ADDR_LEN];
1856
1857 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1858 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1859 ETH_P_IP);
1860 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1861 case QETH_CAST_MULTICAST:
1862 switch (prot) {
1863 #ifdef CONFIG_QETH_IPV6
1864 case __constant_htons(ETH_P_IPV6):
1865 ndisc_mc_map((struct in6_addr *)
1866 skb->data + 24,
1867 tg_addr, card->dev, 0);
1868 break;
1869 #endif
1870 case __constant_htons(ETH_P_IP):
1871 ip_hdr = (struct iphdr *)skb->data;
1872 (card->dev->type == ARPHRD_IEEE802_TR) ?
1873 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1874 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1875 break;
1876 default:
1877 memcpy(tg_addr, card->dev->broadcast,
1878 card->dev->addr_len);
1879 }
1880 card->stats.multicast++;
1881 skb->pkt_type = PACKET_MULTICAST;
1882 break;
1883 case QETH_CAST_BROADCAST:
1884 memcpy(tg_addr, card->dev->broadcast,
1885 card->dev->addr_len);
1886 card->stats.multicast++;
1887 skb->pkt_type = PACKET_BROADCAST;
1888 break;
1889 case QETH_CAST_UNICAST:
1890 case QETH_CAST_ANYCAST:
1891 case QETH_CAST_NOCAST:
1892 default:
1893 skb->pkt_type = PACKET_HOST;
1894 memcpy(tg_addr, card->dev->dev_addr,
1895 card->dev->addr_len);
1896 }
1897 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1898 card->dev->header_ops->create(skb, card->dev, prot,
1899 tg_addr, &hdr->hdr.l3.dest_addr[2],
1900 card->dev->addr_len);
1901 else
1902 card->dev->header_ops->create(skb, card->dev, prot,
1903 tg_addr, "FAKELL", card->dev->addr_len);
1904 }
1905
1906 #ifdef CONFIG_TR
1907 if (card->dev->type == ARPHRD_IEEE802_TR)
1908 skb->protocol = tr_type_trans(skb, card->dev);
1909 else
1910 #endif
1911 skb->protocol = eth_type_trans(skb, card->dev);
1912
1913 if (hdr->hdr.l3.ext_flags &
1914 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1915 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1916 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1917 }
1918
1919 skb->ip_summed = card->options.checksum_type;
1920 if (card->options.checksum_type == HW_CHECKSUMMING) {
1921 if ((hdr->hdr.l3.ext_flags &
1922 (QETH_HDR_EXT_CSUM_HDR_REQ |
1923 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1924 (QETH_HDR_EXT_CSUM_HDR_REQ |
1925 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1926 skb->ip_summed = CHECKSUM_UNNECESSARY;
1927 else
1928 skb->ip_summed = SW_CHECKSUMMING;
1929 }
1930
1931 return vlan_id;
1932 }
1933
1934 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
1935 struct qeth_qdio_buffer *buf, int index)
1936 {
1937 struct qdio_buffer_element *element;
1938 struct sk_buff *skb;
1939 struct qeth_hdr *hdr;
1940 int offset;
1941 __u16 vlan_tag = 0;
1942 unsigned int len;
1943
1944 /* get first element of current buffer */
1945 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
1946 offset = 0;
1947 if (card->options.performance_stats)
1948 card->perf_stats.bufs_rec++;
1949 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
1950 &offset, &hdr))) {
1951 skb->dev = card->dev;
1952 /* is device UP ? */
1953 if (!(card->dev->flags & IFF_UP)) {
1954 dev_kfree_skb_any(skb);
1955 continue;
1956 }
1957
1958 switch (hdr->hdr.l3.id) {
1959 case QETH_HEADER_TYPE_LAYER3:
1960 vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
1961 len = skb->len;
1962 if (vlan_tag)
1963 if (card->vlangrp)
1964 vlan_hwaccel_rx(skb, card->vlangrp,
1965 vlan_tag);
1966 else {
1967 dev_kfree_skb_any(skb);
1968 continue;
1969 }
1970 else
1971 netif_rx(skb);
1972 break;
1973 default:
1974 dev_kfree_skb_any(skb);
1975 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
1976 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1977 continue;
1978 }
1979
1980 card->dev->last_rx = jiffies;
1981 card->stats.rx_packets++;
1982 card->stats.rx_bytes += len;
1983 }
1984 }
1985
1986 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1987 struct qeth_card *card)
1988 {
1989 int rc = 0;
1990 struct vlan_group *vg;
1991 int i;
1992
1993 vg = card->vlangrp;
1994 if (!vg)
1995 return rc;
1996
1997 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1998 if (vlan_group_get_device(vg, i) == dev) {
1999 rc = QETH_VLAN_CARD;
2000 break;
2001 }
2002 }
2003
2004 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2005 return 0;
2006
2007 return rc;
2008 }
2009
2010 static int qeth_l3_verify_dev(struct net_device *dev)
2011 {
2012 struct qeth_card *card;
2013 unsigned long flags;
2014 int rc = 0;
2015
2016 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2017 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2018 if (card->dev == dev) {
2019 rc = QETH_REAL_CARD;
2020 break;
2021 }
2022 rc = qeth_l3_verify_vlan_dev(dev, card);
2023 if (rc)
2024 break;
2025 }
2026 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2027
2028 return rc;
2029 }
2030
2031 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2032 {
2033 struct qeth_card *card = NULL;
2034 int rc;
2035
2036 rc = qeth_l3_verify_dev(dev);
2037 if (rc == QETH_REAL_CARD)
2038 card = dev->ml_priv;
2039 else if (rc == QETH_VLAN_CARD)
2040 card = vlan_dev_real_dev(dev)->ml_priv;
2041 if (card && card->options.layer2)
2042 card = NULL;
2043 QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2044 return card ;
2045 }
2046
2047 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2048 {
2049 int rc = 0;
2050
2051 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2052 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2053
2054 qeth_set_allowed_threads(card, 0, 1);
2055 if (card->read.state == CH_STATE_UP &&
2056 card->write.state == CH_STATE_UP &&
2057 (card->state == CARD_STATE_UP)) {
2058 if (recovery_mode)
2059 qeth_l3_stop(card->dev);
2060 else {
2061 if (card->dev) {
2062 rtnl_lock();
2063 dev_close(card->dev);
2064 rtnl_unlock();
2065 }
2066 }
2067 if (!card->use_hard_stop) {
2068 rc = qeth_send_stoplan(card);
2069 if (rc)
2070 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2071 }
2072 card->state = CARD_STATE_SOFTSETUP;
2073 }
2074 if (card->state == CARD_STATE_SOFTSETUP) {
2075 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2076 qeth_clear_ipacmd_list(card);
2077 card->state = CARD_STATE_HARDSETUP;
2078 }
2079 if (card->state == CARD_STATE_HARDSETUP) {
2080 if (!card->use_hard_stop &&
2081 (card->info.type != QETH_CARD_TYPE_IQD)) {
2082 rc = qeth_l3_put_unique_id(card);
2083 if (rc)
2084 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2085 }
2086 qeth_qdio_clear_card(card, 0);
2087 qeth_clear_qdio_buffers(card);
2088 qeth_clear_working_pool_list(card);
2089 card->state = CARD_STATE_DOWN;
2090 }
2091 if (card->state == CARD_STATE_DOWN) {
2092 qeth_clear_cmd_buffers(&card->read);
2093 qeth_clear_cmd_buffers(&card->write);
2094 }
2095 card->use_hard_stop = 0;
2096 return rc;
2097 }
2098
2099 static void qeth_l3_set_multicast_list(struct net_device *dev)
2100 {
2101 struct qeth_card *card = dev->ml_priv;
2102
2103 QETH_DBF_TEXT(TRACE, 3, "setmulti");
2104 qeth_l3_delete_mc_addresses(card);
2105 qeth_l3_add_multicast_ipv4(card);
2106 #ifdef CONFIG_QETH_IPV6
2107 qeth_l3_add_multicast_ipv6(card);
2108 #endif
2109 qeth_l3_set_ip_addr_list(card);
2110 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2111 return;
2112 qeth_setadp_promisc_mode(card);
2113 }
2114
2115 static const char *qeth_l3_arp_get_error_cause(int *rc)
2116 {
2117 switch (*rc) {
2118 case QETH_IPA_ARP_RC_FAILED:
2119 *rc = -EIO;
2120 return "operation failed";
2121 case QETH_IPA_ARP_RC_NOTSUPP:
2122 *rc = -EOPNOTSUPP;
2123 return "operation not supported";
2124 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2125 *rc = -EINVAL;
2126 return "argument out of range";
2127 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2128 *rc = -EOPNOTSUPP;
2129 return "query operation not supported";
2130 case QETH_IPA_ARP_RC_Q_NO_DATA:
2131 *rc = -ENOENT;
2132 return "no query data available";
2133 default:
2134 return "unknown error";
2135 }
2136 }
2137
2138 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2139 {
2140 int tmp;
2141 int rc;
2142
2143 QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2144
2145 /*
2146 * currently GuestLAN only supports the ARP assist function
2147 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2148 * thus we say EOPNOTSUPP for this ARP function
2149 */
2150 if (card->info.guestlan)
2151 return -EOPNOTSUPP;
2152 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2153 return -EOPNOTSUPP;
2154 }
2155 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2156 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2157 no_entries);
2158 if (rc) {
2159 tmp = rc;
2160 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2161 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2162 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2163 }
2164 return rc;
2165 }
2166
2167 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2168 struct qeth_arp_query_data *qdata, int entry_size,
2169 int uentry_size)
2170 {
2171 char *entry_ptr;
2172 char *uentry_ptr;
2173 int i;
2174
2175 entry_ptr = (char *)&qdata->data;
2176 uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2177 for (i = 0; i < qdata->no_entries; ++i) {
2178 /* strip off 32 bytes "media specific information" */
2179 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2180 entry_ptr += entry_size;
2181 uentry_ptr += uentry_size;
2182 }
2183 }
2184
2185 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2186 struct qeth_reply *reply, unsigned long data)
2187 {
2188 struct qeth_ipa_cmd *cmd;
2189 struct qeth_arp_query_data *qdata;
2190 struct qeth_arp_query_info *qinfo;
2191 int entry_size;
2192 int uentry_size;
2193 int i;
2194
2195 QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2196
2197 qinfo = (struct qeth_arp_query_info *) reply->param;
2198 cmd = (struct qeth_ipa_cmd *) data;
2199 if (cmd->hdr.return_code) {
2200 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2201 return 0;
2202 }
2203 if (cmd->data.setassparms.hdr.return_code) {
2204 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2205 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2206 return 0;
2207 }
2208 qdata = &cmd->data.setassparms.data.query_arp;
2209 switch (qdata->reply_bits) {
2210 case 5:
2211 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2212 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2213 uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2214 break;
2215 case 7:
2216 /* fall through to default */
2217 default:
2218 /* tr is the same as eth -> entry7 */
2219 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2220 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2221 uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2222 break;
2223 }
2224 /* check if there is enough room in userspace */
2225 if ((qinfo->udata_len - qinfo->udata_offset) <
2226 qdata->no_entries * uentry_size){
2227 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2228 cmd->hdr.return_code = -ENOMEM;
2229 goto out_error;
2230 }
2231 QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2232 cmd->data.setassparms.hdr.number_of_replies);
2233 QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2234 QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2235
2236 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2237 /* strip off "media specific information" */
2238 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2239 uentry_size);
2240 } else
2241 /*copy entries to user buffer*/
2242 memcpy(qinfo->udata + qinfo->udata_offset,
2243 (char *)&qdata->data, qdata->no_entries*uentry_size);
2244
2245 qinfo->no_entries += qdata->no_entries;
2246 qinfo->udata_offset += (qdata->no_entries*uentry_size);
2247 /* check if all replies received ... */
2248 if (cmd->data.setassparms.hdr.seq_no <
2249 cmd->data.setassparms.hdr.number_of_replies)
2250 return 1;
2251 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2252 /* keep STRIP_ENTRIES flag so the user program can distinguish
2253 * stripped entries from normal ones */
2254 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2255 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2256 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2257 return 0;
2258 out_error:
2259 i = 0;
2260 memcpy(qinfo->udata, &i, 4);
2261 return 0;
2262 }
2263
2264 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2265 struct qeth_cmd_buffer *iob, int len,
2266 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2267 unsigned long),
2268 void *reply_param)
2269 {
2270 QETH_DBF_TEXT(TRACE, 4, "sendarp");
2271
2272 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2273 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2274 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2275 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2276 reply_cb, reply_param);
2277 }
2278
2279 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2280 {
2281 struct qeth_cmd_buffer *iob;
2282 struct qeth_arp_query_info qinfo = {0, };
2283 int tmp;
2284 int rc;
2285
2286 QETH_DBF_TEXT(TRACE, 3, "arpquery");
2287
2288 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2289 IPA_ARP_PROCESSING)) {
2290 return -EOPNOTSUPP;
2291 }
2292 /* get size of userspace buffer and mask_bits -> 6 bytes */
2293 if (copy_from_user(&qinfo, udata, 6))
2294 return -EFAULT;
2295 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2296 if (!qinfo.udata)
2297 return -ENOMEM;
2298 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2299 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2300 IPA_CMD_ASS_ARP_QUERY_INFO,
2301 sizeof(int), QETH_PROT_IPV4);
2302
2303 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2304 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2305 qeth_l3_arp_query_cb, (void *)&qinfo);
2306 if (rc) {
2307 tmp = rc;
2308 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2309 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2310 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2311 if (copy_to_user(udata, qinfo.udata, 4))
2312 rc = -EFAULT;
2313 } else {
2314 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2315 rc = -EFAULT;
2316 }
2317 kfree(qinfo.udata);
2318 return rc;
2319 }
2320
2321 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2322 struct qeth_arp_cache_entry *entry)
2323 {
2324 struct qeth_cmd_buffer *iob;
2325 char buf[16];
2326 int tmp;
2327 int rc;
2328
2329 QETH_DBF_TEXT(TRACE, 3, "arpadent");
2330
2331 /*
2332 * currently GuestLAN only supports the ARP assist function
2333 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2334 * thus we say EOPNOTSUPP for this ARP function
2335 */
2336 if (card->info.guestlan)
2337 return -EOPNOTSUPP;
2338 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2339 return -EOPNOTSUPP;
2340 }
2341
2342 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2343 IPA_CMD_ASS_ARP_ADD_ENTRY,
2344 sizeof(struct qeth_arp_cache_entry),
2345 QETH_PROT_IPV4);
2346 rc = qeth_l3_send_setassparms(card, iob,
2347 sizeof(struct qeth_arp_cache_entry),
2348 (unsigned long) entry,
2349 qeth_l3_default_setassparms_cb, NULL);
2350 if (rc) {
2351 tmp = rc;
2352 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2353 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2354 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2355 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2356 }
2357 return rc;
2358 }
2359
2360 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2361 struct qeth_arp_cache_entry *entry)
2362 {
2363 struct qeth_cmd_buffer *iob;
2364 char buf[16] = {0, };
2365 int tmp;
2366 int rc;
2367
2368 QETH_DBF_TEXT(TRACE, 3, "arprment");
2369
2370 /*
2371 * currently GuestLAN only supports the ARP assist function
2372 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_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 return -EOPNOTSUPP;
2379 }
2380 memcpy(buf, entry, 12);
2381 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2382 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2383 12,
2384 QETH_PROT_IPV4);
2385 rc = qeth_l3_send_setassparms(card, iob,
2386 12, (unsigned long)buf,
2387 qeth_l3_default_setassparms_cb, NULL);
2388 if (rc) {
2389 tmp = rc;
2390 memset(buf, 0, 16);
2391 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2392 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2393 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2394 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2395 }
2396 return rc;
2397 }
2398
2399 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2400 {
2401 int rc;
2402 int tmp;
2403
2404 QETH_DBF_TEXT(TRACE, 3, "arpflush");
2405
2406 /*
2407 * currently GuestLAN only supports the ARP assist function
2408 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2409 * thus we say EOPNOTSUPP for this ARP function
2410 */
2411 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2412 return -EOPNOTSUPP;
2413 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2414 return -EOPNOTSUPP;
2415 }
2416 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2417 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2418 if (rc) {
2419 tmp = rc;
2420 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2421 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2422 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2423 }
2424 return rc;
2425 }
2426
2427 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2428 {
2429 struct qeth_card *card = dev->ml_priv;
2430 struct qeth_arp_cache_entry arp_entry;
2431 struct mii_ioctl_data *mii_data;
2432 int rc = 0;
2433
2434 if (!card)
2435 return -ENODEV;
2436
2437 if ((card->state != CARD_STATE_UP) &&
2438 (card->state != CARD_STATE_SOFTSETUP))
2439 return -ENODEV;
2440
2441 switch (cmd) {
2442 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2443 if (!capable(CAP_NET_ADMIN)) {
2444 rc = -EPERM;
2445 break;
2446 }
2447 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2448 break;
2449 case SIOC_QETH_ARP_QUERY_INFO:
2450 if (!capable(CAP_NET_ADMIN)) {
2451 rc = -EPERM;
2452 break;
2453 }
2454 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2455 break;
2456 case SIOC_QETH_ARP_ADD_ENTRY:
2457 if (!capable(CAP_NET_ADMIN)) {
2458 rc = -EPERM;
2459 break;
2460 }
2461 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2462 sizeof(struct qeth_arp_cache_entry)))
2463 rc = -EFAULT;
2464 else
2465 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2466 break;
2467 case SIOC_QETH_ARP_REMOVE_ENTRY:
2468 if (!capable(CAP_NET_ADMIN)) {
2469 rc = -EPERM;
2470 break;
2471 }
2472 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2473 sizeof(struct qeth_arp_cache_entry)))
2474 rc = -EFAULT;
2475 else
2476 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2477 break;
2478 case SIOC_QETH_ARP_FLUSH_CACHE:
2479 if (!capable(CAP_NET_ADMIN)) {
2480 rc = -EPERM;
2481 break;
2482 }
2483 rc = qeth_l3_arp_flush_cache(card);
2484 break;
2485 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2486 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2487 break;
2488 case SIOC_QETH_GET_CARD_TYPE:
2489 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2490 !card->info.guestlan)
2491 return 1;
2492 return 0;
2493 break;
2494 case SIOCGMIIPHY:
2495 mii_data = if_mii(rq);
2496 mii_data->phy_id = 0;
2497 break;
2498 case SIOCGMIIREG:
2499 mii_data = if_mii(rq);
2500 if (mii_data->phy_id != 0)
2501 rc = -EINVAL;
2502 else
2503 mii_data->val_out = qeth_mdio_read(dev,
2504 mii_data->phy_id,
2505 mii_data->reg_num);
2506 break;
2507 default:
2508 rc = -EOPNOTSUPP;
2509 }
2510 if (rc)
2511 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2512 return rc;
2513 }
2514
2515 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2516 struct sk_buff *skb, int ipv, int cast_type)
2517 {
2518 memset(hdr, 0, sizeof(struct qeth_hdr));
2519 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2520 hdr->hdr.l3.ext_flags = 0;
2521
2522 /*
2523 * before we're going to overwrite this location with next hop ip.
2524 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2525 */
2526 if (card->vlangrp && vlan_tx_tag_present(skb)) {
2527 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2528 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2529 else
2530 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2531 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2532 }
2533
2534 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2535 if (ipv == 4) {
2536 /* IPv4 */
2537 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2538 memset(hdr->hdr.l3.dest_addr, 0, 12);
2539 if ((skb->dst) && (skb->dst->neighbour)) {
2540 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2541 *((u32 *) skb->dst->neighbour->primary_key);
2542 } else {
2543 /* fill in destination address used in ip header */
2544 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2545 ip_hdr(skb)->daddr;
2546 }
2547 } else if (ipv == 6) {
2548 /* IPv6 */
2549 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2550 if (card->info.type == QETH_CARD_TYPE_IQD)
2551 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2552 if ((skb->dst) && (skb->dst->neighbour)) {
2553 memcpy(hdr->hdr.l3.dest_addr,
2554 skb->dst->neighbour->primary_key, 16);
2555 } else {
2556 /* fill in destination address used in ip header */
2557 memcpy(hdr->hdr.l3.dest_addr,
2558 &ipv6_hdr(skb)->daddr, 16);
2559 }
2560 } else {
2561 /* passthrough */
2562 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2563 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2564 sizeof(__u16), skb->dev->broadcast, 6)) {
2565 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2566 QETH_HDR_PASSTHRU;
2567 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2568 skb->dev->broadcast, 6)) {
2569 /* broadcast? */
2570 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2571 QETH_HDR_PASSTHRU;
2572 } else {
2573 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2574 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2575 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2576 }
2577 }
2578 }
2579
2580 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2581 {
2582 int rc;
2583 u16 *tag;
2584 struct qeth_hdr *hdr = NULL;
2585 int elements_needed = 0;
2586 struct qeth_card *card = dev->ml_priv;
2587 struct sk_buff *new_skb = NULL;
2588 int ipv = qeth_get_ip_version(skb);
2589 int cast_type = qeth_get_cast_type(card, skb);
2590 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2591 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2592 int tx_bytes = skb->len;
2593 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2594 struct qeth_eddp_context *ctx = NULL;
2595 int data_offset = -1;
2596
2597 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2598 (skb->protocol != htons(ETH_P_IPV6)) &&
2599 (skb->protocol != htons(ETH_P_IP)))
2600 goto tx_drop;
2601
2602 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2603 card->stats.tx_carrier_errors++;
2604 goto tx_drop;
2605 }
2606
2607 if ((cast_type == RTN_BROADCAST) &&
2608 (card->info.broadcast_capable == 0))
2609 goto tx_drop;
2610
2611 if (card->options.performance_stats) {
2612 card->perf_stats.outbound_cnt++;
2613 card->perf_stats.outbound_start_time = qeth_get_micros();
2614 }
2615
2616 if (skb_is_gso(skb))
2617 large_send = card->options.large_send;
2618
2619 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2620 (skb_shinfo(skb)->nr_frags == 0)) {
2621 new_skb = skb;
2622 data_offset = ETH_HLEN;
2623 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2624 if (!hdr)
2625 goto tx_drop;
2626 elements_needed++;
2627 } else {
2628 /* create a clone with writeable headroom */
2629 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2630 + VLAN_HLEN);
2631 if (!new_skb)
2632 goto tx_drop;
2633 }
2634
2635 if (card->info.type == QETH_CARD_TYPE_IQD) {
2636 if (data_offset < 0)
2637 skb_pull(new_skb, ETH_HLEN);
2638 } else {
2639 if (new_skb->protocol == htons(ETH_P_IP)) {
2640 if (card->dev->type == ARPHRD_IEEE802_TR)
2641 skb_pull(new_skb, TR_HLEN);
2642 else
2643 skb_pull(new_skb, ETH_HLEN);
2644 }
2645
2646 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2647 vlan_tx_tag_present(new_skb)) {
2648 skb_push(new_skb, VLAN_HLEN);
2649 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2650 skb_copy_to_linear_data_offset(new_skb, 4,
2651 new_skb->data + 8, 4);
2652 skb_copy_to_linear_data_offset(new_skb, 8,
2653 new_skb->data + 12, 4);
2654 tag = (u16 *)(new_skb->data + 12);
2655 *tag = __constant_htons(ETH_P_8021Q);
2656 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2657 new_skb->vlan_tci = 0;
2658 }
2659 }
2660
2661 netif_stop_queue(dev);
2662
2663 /* fix hardware limitation: as long as we do not have sbal
2664 * chaining we can not send long frag lists so we temporary
2665 * switch to EDDP
2666 */
2667 if ((large_send == QETH_LARGE_SEND_TSO) &&
2668 ((skb_shinfo(new_skb)->nr_frags + 2) > 16))
2669 large_send = QETH_LARGE_SEND_EDDP;
2670
2671 if ((large_send == QETH_LARGE_SEND_TSO) &&
2672 (cast_type == RTN_UNSPEC)) {
2673 hdr = (struct qeth_hdr *)skb_push(new_skb,
2674 sizeof(struct qeth_hdr_tso));
2675 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2676 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2677 qeth_tso_fill_header(card, hdr, new_skb);
2678 elements_needed++;
2679 } else {
2680 if (data_offset < 0) {
2681 hdr = (struct qeth_hdr *)skb_push(new_skb,
2682 sizeof(struct qeth_hdr));
2683 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2684 cast_type);
2685 } else {
2686 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2687 cast_type);
2688 hdr->hdr.l3.length = new_skb->len - data_offset;
2689 }
2690 }
2691
2692 if (large_send == QETH_LARGE_SEND_EDDP) {
2693 /* new_skb is not owned by a socket so we use skb to get
2694 * the protocol
2695 */
2696 ctx = qeth_eddp_create_context(card, new_skb, hdr,
2697 skb->sk->sk_protocol);
2698 if (ctx == NULL) {
2699 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
2700 goto tx_drop;
2701 }
2702 } else {
2703 int elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2704 elements_needed);
2705 if (!elems) {
2706 if (data_offset >= 0)
2707 kmem_cache_free(qeth_core_header_cache, hdr);
2708 goto tx_drop;
2709 }
2710 elements_needed += elems;
2711 }
2712
2713 if ((large_send == QETH_LARGE_SEND_NO) &&
2714 (new_skb->ip_summed == CHECKSUM_PARTIAL)) {
2715 qeth_tx_csum(new_skb);
2716 if (card->options.performance_stats)
2717 card->perf_stats.tx_csum++;
2718 }
2719
2720 if (card->info.type != QETH_CARD_TYPE_IQD)
2721 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2722 elements_needed, ctx);
2723 else
2724 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2725 elements_needed, ctx, data_offset, 0);
2726
2727 if (!rc) {
2728 card->stats.tx_packets++;
2729 card->stats.tx_bytes += tx_bytes;
2730 if (new_skb != skb)
2731 dev_kfree_skb_any(skb);
2732 if (card->options.performance_stats) {
2733 if (large_send != QETH_LARGE_SEND_NO) {
2734 card->perf_stats.large_send_bytes += tx_bytes;
2735 card->perf_stats.large_send_cnt++;
2736 }
2737 if (skb_shinfo(new_skb)->nr_frags > 0) {
2738 card->perf_stats.sg_skbs_sent++;
2739 /* nr_frags + skb->data */
2740 card->perf_stats.sg_frags_sent +=
2741 skb_shinfo(new_skb)->nr_frags + 1;
2742 }
2743 }
2744
2745 if (ctx != NULL) {
2746 qeth_eddp_put_context(ctx);
2747 dev_kfree_skb_any(new_skb);
2748 }
2749 } else {
2750 if (ctx != NULL)
2751 qeth_eddp_put_context(ctx);
2752
2753 if (data_offset >= 0)
2754 kmem_cache_free(qeth_core_header_cache, hdr);
2755
2756 if (rc == -EBUSY) {
2757 if (new_skb != skb)
2758 dev_kfree_skb_any(new_skb);
2759 return NETDEV_TX_BUSY;
2760 } else
2761 goto tx_drop;
2762 }
2763
2764 netif_wake_queue(dev);
2765 if (card->options.performance_stats)
2766 card->perf_stats.outbound_time += qeth_get_micros() -
2767 card->perf_stats.outbound_start_time;
2768 return rc;
2769
2770 tx_drop:
2771 card->stats.tx_dropped++;
2772 card->stats.tx_errors++;
2773 if ((new_skb != skb) && new_skb)
2774 dev_kfree_skb_any(new_skb);
2775 dev_kfree_skb_any(skb);
2776 netif_wake_queue(dev);
2777 return NETDEV_TX_OK;
2778 }
2779
2780 static int qeth_l3_open(struct net_device *dev)
2781 {
2782 struct qeth_card *card = dev->ml_priv;
2783
2784 QETH_DBF_TEXT(TRACE, 4, "qethopen");
2785 if (card->state != CARD_STATE_SOFTSETUP)
2786 return -ENODEV;
2787 card->data.state = CH_STATE_UP;
2788 card->state = CARD_STATE_UP;
2789 netif_start_queue(dev);
2790
2791 if (!card->lan_online && netif_carrier_ok(dev))
2792 netif_carrier_off(dev);
2793 return 0;
2794 }
2795
2796 static int qeth_l3_stop(struct net_device *dev)
2797 {
2798 struct qeth_card *card = dev->ml_priv;
2799
2800 QETH_DBF_TEXT(TRACE, 4, "qethstop");
2801 netif_tx_disable(dev);
2802 if (card->state == CARD_STATE_UP)
2803 card->state = CARD_STATE_SOFTSETUP;
2804 return 0;
2805 }
2806
2807 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2808 {
2809 struct qeth_card *card = dev->ml_priv;
2810
2811 return (card->options.checksum_type == HW_CHECKSUMMING);
2812 }
2813
2814 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2815 {
2816 struct qeth_card *card = dev->ml_priv;
2817 enum qeth_card_states old_state;
2818 enum qeth_checksum_types csum_type;
2819
2820 if ((card->state != CARD_STATE_UP) &&
2821 (card->state != CARD_STATE_DOWN))
2822 return -EPERM;
2823
2824 if (data)
2825 csum_type = HW_CHECKSUMMING;
2826 else
2827 csum_type = SW_CHECKSUMMING;
2828
2829 if (card->options.checksum_type != csum_type) {
2830 old_state = card->state;
2831 if (card->state == CARD_STATE_UP)
2832 __qeth_l3_set_offline(card->gdev, 1);
2833 card->options.checksum_type = csum_type;
2834 if (old_state == CARD_STATE_UP)
2835 __qeth_l3_set_online(card->gdev, 1);
2836 }
2837 return 0;
2838 }
2839
2840 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2841 {
2842 struct qeth_card *card = dev->ml_priv;
2843
2844 if (data) {
2845 if (card->options.large_send == QETH_LARGE_SEND_NO) {
2846 if (card->info.type == QETH_CARD_TYPE_IQD)
2847 card->options.large_send = QETH_LARGE_SEND_EDDP;
2848 else
2849 card->options.large_send = QETH_LARGE_SEND_TSO;
2850 dev->features |= NETIF_F_TSO;
2851 }
2852 } else {
2853 dev->features &= ~NETIF_F_TSO;
2854 card->options.large_send = QETH_LARGE_SEND_NO;
2855 }
2856 return 0;
2857 }
2858
2859 static struct ethtool_ops qeth_l3_ethtool_ops = {
2860 .get_link = ethtool_op_get_link,
2861 .get_tx_csum = ethtool_op_get_tx_csum,
2862 .set_tx_csum = ethtool_op_set_tx_hw_csum,
2863 .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
2864 .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
2865 .get_sg = ethtool_op_get_sg,
2866 .set_sg = ethtool_op_set_sg,
2867 .get_tso = ethtool_op_get_tso,
2868 .set_tso = qeth_l3_ethtool_set_tso,
2869 .get_strings = qeth_core_get_strings,
2870 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2871 .get_stats_count = qeth_core_get_stats_count,
2872 .get_drvinfo = qeth_core_get_drvinfo,
2873 .get_settings = qeth_core_ethtool_get_settings,
2874 };
2875
2876 /*
2877 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2878 * NOARP on the netdevice is no option because it also turns off neighbor
2879 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2880 * arp resolution but we want the hard header (packet socket will work
2881 * e.g. tcpdump)
2882 */
2883 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2884 {
2885 n->nud_state = NUD_NOARP;
2886 memcpy(n->ha, "FAKELL", 6);
2887 n->output = n->ops->connected_output;
2888 return 0;
2889 }
2890
2891 static int
2892 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2893 {
2894 if (np->tbl->family == AF_INET)
2895 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2896
2897 return 0;
2898 }
2899
2900 static const struct net_device_ops qeth_l3_netdev_ops = {
2901 .ndo_open = qeth_l3_open,
2902 .ndo_stop = qeth_l3_stop,
2903 .ndo_get_stats = qeth_get_stats,
2904 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2905 .ndo_validate_addr = eth_validate_addr,
2906 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
2907 .ndo_do_ioctl = qeth_l3_do_ioctl,
2908 .ndo_change_mtu = qeth_change_mtu,
2909 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
2910 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2911 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2912 .ndo_tx_timeout = qeth_tx_timeout,
2913 };
2914
2915 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2916 .ndo_open = qeth_l3_open,
2917 .ndo_stop = qeth_l3_stop,
2918 .ndo_get_stats = qeth_get_stats,
2919 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2920 .ndo_validate_addr = eth_validate_addr,
2921 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
2922 .ndo_do_ioctl = qeth_l3_do_ioctl,
2923 .ndo_change_mtu = qeth_change_mtu,
2924 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
2925 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2926 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2927 .ndo_tx_timeout = qeth_tx_timeout,
2928 .ndo_neigh_setup = qeth_l3_neigh_setup,
2929 };
2930
2931 static int qeth_l3_setup_netdev(struct qeth_card *card)
2932 {
2933 if (card->info.type == QETH_CARD_TYPE_OSAE) {
2934 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2935 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2936 #ifdef CONFIG_TR
2937 card->dev = alloc_trdev(0);
2938 #endif
2939 if (!card->dev)
2940 return -ENODEV;
2941 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2942 } else {
2943 card->dev = alloc_etherdev(0);
2944 if (!card->dev)
2945 return -ENODEV;
2946 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2947
2948 /*IPv6 address autoconfiguration stuff*/
2949 qeth_l3_get_unique_id(card);
2950 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2951 card->dev->dev_id = card->info.unique_id &
2952 0xffff;
2953 }
2954 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2955 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
2956 if (!card->dev)
2957 return -ENODEV;
2958 card->dev->flags |= IFF_NOARP;
2959 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2960 qeth_l3_iqd_read_initial_mac(card);
2961 } else
2962 return -ENODEV;
2963
2964 card->dev->ml_priv = card;
2965 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2966 card->dev->mtu = card->info.initial_mtu;
2967 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
2968 card->dev->features |= NETIF_F_HW_VLAN_TX |
2969 NETIF_F_HW_VLAN_RX |
2970 NETIF_F_HW_VLAN_FILTER;
2971
2972 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2973 return register_netdev(card->dev);
2974 }
2975
2976 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
2977 unsigned int qdio_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 (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2993 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
2994 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2995 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
2996 first_element, count);
2997 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
2998 qeth_schedule_recovery(card);
2999 return;
3000 }
3001 for (i = first_element; i < (first_element + count); ++i) {
3002 index = i % QDIO_MAX_BUFFERS_PER_Q;
3003 buffer = &card->qdio.in_q->bufs[index];
3004 if (!(qdio_err &&
3005 qeth_check_qdio_errors(buffer->buffer,
3006 qdio_err, "qinerr")))
3007 qeth_l3_process_inbound_buffer(card, buffer, index);
3008 /* clear buffer and give back to hardware */
3009 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3010 qeth_queue_input_buffer(card, index);
3011 }
3012 if (card->options.performance_stats)
3013 card->perf_stats.inbound_time += qeth_get_micros() -
3014 card->perf_stats.inbound_start_time;
3015 }
3016
3017 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3018 {
3019 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3020
3021 qeth_l3_create_device_attributes(&gdev->dev);
3022 card->options.layer2 = 0;
3023 card->discipline.input_handler = (qdio_handler_t *)
3024 qeth_l3_qdio_input_handler;
3025 card->discipline.output_handler = (qdio_handler_t *)
3026 qeth_qdio_output_handler;
3027 card->discipline.recover = qeth_l3_recover;
3028 return 0;
3029 }
3030
3031 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3032 {
3033 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3034
3035 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3036
3037 if (cgdev->state == CCWGROUP_ONLINE) {
3038 card->use_hard_stop = 1;
3039 qeth_l3_set_offline(cgdev);
3040 }
3041
3042 if (card->dev) {
3043 unregister_netdev(card->dev);
3044 card->dev = NULL;
3045 }
3046
3047 qeth_l3_remove_device_attributes(&cgdev->dev);
3048 qeth_l3_clear_ip_list(card, 0, 0);
3049 qeth_l3_clear_ipato_list(card);
3050 return;
3051 }
3052
3053 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3054 {
3055 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3056 int rc = 0;
3057 enum qeth_card_states recover_flag;
3058
3059 BUG_ON(!card);
3060 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3061 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3062
3063 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3064
3065 recover_flag = card->state;
3066 rc = ccw_device_set_online(CARD_RDEV(card));
3067 if (rc) {
3068 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3069 return -EIO;
3070 }
3071 rc = ccw_device_set_online(CARD_WDEV(card));
3072 if (rc) {
3073 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3074 return -EIO;
3075 }
3076 rc = ccw_device_set_online(CARD_DDEV(card));
3077 if (rc) {
3078 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3079 return -EIO;
3080 }
3081
3082 rc = qeth_core_hardsetup_card(card);
3083 if (rc) {
3084 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3085 goto out_remove;
3086 }
3087
3088 qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3089
3090 if (!card->dev && qeth_l3_setup_netdev(card))
3091 goto out_remove;
3092
3093 card->state = CARD_STATE_HARDSETUP;
3094 qeth_print_status_message(card);
3095
3096 /* softsetup */
3097 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3098
3099 rc = qeth_send_startlan(card);
3100 if (rc) {
3101 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3102 if (rc == 0xe080) {
3103 dev_warn(&card->gdev->dev,
3104 "The LAN is offline\n");
3105 card->lan_online = 0;
3106 }
3107 return rc;
3108 } else
3109 card->lan_online = 1;
3110 qeth_set_large_send(card, card->options.large_send);
3111
3112 rc = qeth_l3_setadapter_parms(card);
3113 if (rc)
3114 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3115 rc = qeth_l3_start_ipassists(card);
3116 if (rc)
3117 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3118 rc = qeth_l3_setrouting_v4(card);
3119 if (rc)
3120 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3121 rc = qeth_l3_setrouting_v6(card);
3122 if (rc)
3123 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3124 netif_tx_disable(card->dev);
3125
3126 rc = qeth_init_qdio_queues(card);
3127 if (rc) {
3128 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3129 goto out_remove;
3130 }
3131 card->state = CARD_STATE_SOFTSETUP;
3132 netif_carrier_on(card->dev);
3133
3134 qeth_set_allowed_threads(card, 0xffffffff, 0);
3135 if (recover_flag == CARD_STATE_RECOVER) {
3136 if (recovery_mode)
3137 qeth_l3_open(card->dev);
3138 else {
3139 rtnl_lock();
3140 dev_open(card->dev);
3141 rtnl_unlock();
3142 }
3143 qeth_l3_set_multicast_list(card->dev);
3144 }
3145 /* let user_space know that device is online */
3146 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3147 return 0;
3148 out_remove:
3149 card->use_hard_stop = 1;
3150 qeth_l3_stop_card(card, 0);
3151 ccw_device_set_offline(CARD_DDEV(card));
3152 ccw_device_set_offline(CARD_WDEV(card));
3153 ccw_device_set_offline(CARD_RDEV(card));
3154 if (recover_flag == CARD_STATE_RECOVER)
3155 card->state = CARD_STATE_RECOVER;
3156 else
3157 card->state = CARD_STATE_DOWN;
3158 return -ENODEV;
3159 }
3160
3161 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3162 {
3163 return __qeth_l3_set_online(gdev, 0);
3164 }
3165
3166 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3167 int recovery_mode)
3168 {
3169 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3170 int rc = 0, rc2 = 0, rc3 = 0;
3171 enum qeth_card_states recover_flag;
3172
3173 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3174 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3175
3176 if (card->dev && netif_carrier_ok(card->dev))
3177 netif_carrier_off(card->dev);
3178 recover_flag = card->state;
3179 qeth_l3_stop_card(card, recovery_mode);
3180 rc = ccw_device_set_offline(CARD_DDEV(card));
3181 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3182 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3183 if (!rc)
3184 rc = (rc2) ? rc2 : rc3;
3185 if (rc)
3186 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3187 if (recover_flag == CARD_STATE_UP)
3188 card->state = CARD_STATE_RECOVER;
3189 /* let user_space know that device is offline */
3190 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3191 return 0;
3192 }
3193
3194 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3195 {
3196 return __qeth_l3_set_offline(cgdev, 0);
3197 }
3198
3199 static int qeth_l3_recover(void *ptr)
3200 {
3201 struct qeth_card *card;
3202 int rc = 0;
3203
3204 card = (struct qeth_card *) ptr;
3205 QETH_DBF_TEXT(TRACE, 2, "recover1");
3206 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3207 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3208 return 0;
3209 QETH_DBF_TEXT(TRACE, 2, "recover2");
3210 dev_warn(&card->gdev->dev,
3211 "A recovery process has been started for the device\n");
3212 card->use_hard_stop = 1;
3213 __qeth_l3_set_offline(card->gdev, 1);
3214 rc = __qeth_l3_set_online(card->gdev, 1);
3215 /* don't run another scheduled recovery */
3216 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3217 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3218 if (!rc)
3219 dev_info(&card->gdev->dev,
3220 "Device successfully recovered!\n");
3221 else {
3222 rtnl_lock();
3223 dev_close(card->dev);
3224 rtnl_unlock();
3225 dev_warn(&card->gdev->dev, "The qeth device driver "
3226 "failed to recover an error on the device\n");
3227 }
3228 return 0;
3229 }
3230
3231 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3232 {
3233 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3234 qeth_l3_clear_ip_list(card, 0, 0);
3235 qeth_qdio_clear_card(card, 0);
3236 qeth_clear_qdio_buffers(card);
3237 }
3238
3239 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3240 .probe = qeth_l3_probe_device,
3241 .remove = qeth_l3_remove_device,
3242 .set_online = qeth_l3_set_online,
3243 .set_offline = qeth_l3_set_offline,
3244 .shutdown = qeth_l3_shutdown,
3245 };
3246 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3247
3248 static int qeth_l3_ip_event(struct notifier_block *this,
3249 unsigned long event, void *ptr)
3250 {
3251 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3252 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3253 struct qeth_ipaddr *addr;
3254 struct qeth_card *card;
3255
3256 if (dev_net(dev) != &init_net)
3257 return NOTIFY_DONE;
3258
3259 QETH_DBF_TEXT(TRACE, 3, "ipevent");
3260 card = qeth_l3_get_card_from_dev(dev);
3261 if (!card)
3262 return NOTIFY_DONE;
3263
3264 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3265 if (addr != NULL) {
3266 addr->u.a4.addr = ifa->ifa_address;
3267 addr->u.a4.mask = ifa->ifa_mask;
3268 addr->type = QETH_IP_TYPE_NORMAL;
3269 } else
3270 goto out;
3271
3272 switch (event) {
3273 case NETDEV_UP:
3274 if (!qeth_l3_add_ip(card, addr))
3275 kfree(addr);
3276 break;
3277 case NETDEV_DOWN:
3278 if (!qeth_l3_delete_ip(card, addr))
3279 kfree(addr);
3280 break;
3281 default:
3282 break;
3283 }
3284 qeth_l3_set_ip_addr_list(card);
3285 out:
3286 return NOTIFY_DONE;
3287 }
3288
3289 static struct notifier_block qeth_l3_ip_notifier = {
3290 qeth_l3_ip_event,
3291 NULL,
3292 };
3293
3294 #ifdef CONFIG_QETH_IPV6
3295 /**
3296 * IPv6 event handler
3297 */
3298 static int qeth_l3_ip6_event(struct notifier_block *this,
3299 unsigned long event, void *ptr)
3300 {
3301 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3302 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3303 struct qeth_ipaddr *addr;
3304 struct qeth_card *card;
3305
3306 QETH_DBF_TEXT(TRACE, 3, "ip6event");
3307
3308 card = qeth_l3_get_card_from_dev(dev);
3309 if (!card)
3310 return NOTIFY_DONE;
3311 if (!qeth_is_supported(card, IPA_IPV6))
3312 return NOTIFY_DONE;
3313
3314 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3315 if (addr != NULL) {
3316 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3317 addr->u.a6.pfxlen = ifa->prefix_len;
3318 addr->type = QETH_IP_TYPE_NORMAL;
3319 } else
3320 goto out;
3321
3322 switch (event) {
3323 case NETDEV_UP:
3324 if (!qeth_l3_add_ip(card, addr))
3325 kfree(addr);
3326 break;
3327 case NETDEV_DOWN:
3328 if (!qeth_l3_delete_ip(card, addr))
3329 kfree(addr);
3330 break;
3331 default:
3332 break;
3333 }
3334 qeth_l3_set_ip_addr_list(card);
3335 out:
3336 return NOTIFY_DONE;
3337 }
3338
3339 static struct notifier_block qeth_l3_ip6_notifier = {
3340 qeth_l3_ip6_event,
3341 NULL,
3342 };
3343 #endif
3344
3345 static int qeth_l3_register_notifiers(void)
3346 {
3347 int rc;
3348
3349 QETH_DBF_TEXT(TRACE, 5, "regnotif");
3350 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3351 if (rc)
3352 return rc;
3353 #ifdef CONFIG_QETH_IPV6
3354 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3355 if (rc) {
3356 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3357 return rc;
3358 }
3359 #else
3360 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3361 #endif
3362 return 0;
3363 }
3364
3365 static void qeth_l3_unregister_notifiers(void)
3366 {
3367
3368 QETH_DBF_TEXT(TRACE, 5, "unregnot");
3369 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3370 #ifdef CONFIG_QETH_IPV6
3371 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3372 #endif /* QETH_IPV6 */
3373 }
3374
3375 static int __init qeth_l3_init(void)
3376 {
3377 int rc = 0;
3378
3379 pr_info("register layer 3 discipline\n");
3380 rc = qeth_l3_register_notifiers();
3381 return rc;
3382 }
3383
3384 static void __exit qeth_l3_exit(void)
3385 {
3386 qeth_l3_unregister_notifiers();
3387 pr_info("unregister layer 3 discipline\n");
3388 }
3389
3390 module_init(qeth_l3_init);
3391 module_exit(qeth_l3_exit);
3392 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3393 MODULE_DESCRIPTION("qeth layer 3 discipline");
3394 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards