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qeth: synchronize configuration interface
[linux-2.6/libata-dev.git] / drivers / s390 / net / qeth_l3_main.c
blob83c7f9444c4f9771e93971d2b32cd9f1da7d9639
1 /*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/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/ipv6.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25 #include <linux/slab.h>
26
27 #include <net/ip.h>
28 #include <net/arp.h>
29 #include <net/ip6_checksum.h>
30
31 #include "qeth_l3.h"
32
33 static int qeth_l3_set_offline(struct ccwgroup_device *);
34 static int qeth_l3_recover(void *);
35 static int qeth_l3_stop(struct net_device *);
36 static void qeth_l3_set_multicast_list(struct net_device *);
37 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
38 static int qeth_l3_register_addr_entry(struct qeth_card *,
39 struct qeth_ipaddr *);
40 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
41 struct qeth_ipaddr *);
42 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
43 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
44
45 int qeth_l3_set_large_send(struct qeth_card *card,
46 enum qeth_large_send_types type)
47 {
48 int rc = 0;
49
50 card->options.large_send = type;
51 if (card->dev == NULL)
52 return 0;
53
54 if (card->options.large_send == QETH_LARGE_SEND_TSO) {
55 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
56 card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
57 NETIF_F_IP_CSUM;
58 } else {
59 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
60 NETIF_F_IP_CSUM);
61 card->options.large_send = QETH_LARGE_SEND_NO;
62 rc = -EOPNOTSUPP;
63 }
64 } else {
65 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
66 NETIF_F_IP_CSUM);
67 card->options.large_send = QETH_LARGE_SEND_NO;
68 }
69 return rc;
70 }
71
72 static int qeth_l3_isxdigit(char *buf)
73 {
74 while (*buf) {
75 if (!isxdigit(*buf++))
76 return 0;
77 }
78 return 1;
79 }
80
81 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
82 {
83 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
84 }
85
86 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
87 {
88 int count = 0, rc = 0;
89 int in[4];
90 char c;
91
92 rc = sscanf(buf, "%u.%u.%u.%u%c",
93 &in[0], &in[1], &in[2], &in[3], &c);
94 if (rc != 4 && (rc != 5 || c != '\n'))
95 return -EINVAL;
96 for (count = 0; count < 4; count++) {
97 if (in[count] > 255)
98 return -EINVAL;
99 addr[count] = in[count];
100 }
101 return 0;
102 }
103
104 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
105 {
106 sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
107 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
108 addr[0], addr[1], addr[2], addr[3],
109 addr[4], addr[5], addr[6], addr[7],
110 addr[8], addr[9], addr[10], addr[11],
111 addr[12], addr[13], addr[14], addr[15]);
112 }
113
114 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
115 {
116 const char *end, *end_tmp, *start;
117 __u16 *in;
118 char num[5];
119 int num2, cnt, out, found, save_cnt;
120 unsigned short in_tmp[8] = {0, };
121
122 cnt = out = found = save_cnt = num2 = 0;
123 end = start = buf;
124 in = (__u16 *) addr;
125 memset(in, 0, 16);
126 while (*end) {
127 end = strchr(start, ':');
128 if (end == NULL) {
129 end = buf + strlen(buf);
130 end_tmp = strchr(start, '\n');
131 if (end_tmp != NULL)
132 end = end_tmp;
133 out = 1;
134 }
135 if ((end - start)) {
136 memset(num, 0, 5);
137 if ((end - start) > 4)
138 return -EINVAL;
139 memcpy(num, start, end - start);
140 if (!qeth_l3_isxdigit(num))
141 return -EINVAL;
142 sscanf(start, "%x", &num2);
143 if (found)
144 in_tmp[save_cnt++] = num2;
145 else
146 in[cnt++] = num2;
147 if (out)
148 break;
149 } else {
150 if (found)
151 return -EINVAL;
152 found = 1;
153 }
154 start = ++end;
155 }
156 if (cnt + save_cnt > 8)
157 return -EINVAL;
158 cnt = 7;
159 while (save_cnt)
160 in[cnt--] = in_tmp[--save_cnt];
161 return 0;
162 }
163
164 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
165 char *buf)
166 {
167 if (proto == QETH_PROT_IPV4)
168 qeth_l3_ipaddr4_to_string(addr, buf);
169 else if (proto == QETH_PROT_IPV6)
170 qeth_l3_ipaddr6_to_string(addr, buf);
171 }
172
173 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
174 __u8 *addr)
175 {
176 if (proto == QETH_PROT_IPV4)
177 return qeth_l3_string_to_ipaddr4(buf, addr);
178 else if (proto == QETH_PROT_IPV6)
179 return qeth_l3_string_to_ipaddr6(buf, addr);
180 else
181 return -EINVAL;
182 }
183
184 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
185 {
186 int i, j;
187 u8 octet;
188
189 for (i = 0; i < len; ++i) {
190 octet = addr[i];
191 for (j = 7; j >= 0; --j) {
192 bits[i*8 + j] = octet & 1;
193 octet >>= 1;
194 }
195 }
196 }
197
198 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
199 struct qeth_ipaddr *addr)
200 {
201 struct qeth_ipato_entry *ipatoe;
202 u8 addr_bits[128] = {0, };
203 u8 ipatoe_bits[128] = {0, };
204 int rc = 0;
205
206 if (!card->ipato.enabled)
207 return 0;
208
209 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
210 (addr->proto == QETH_PROT_IPV4)? 4:16);
211 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
212 if (addr->proto != ipatoe->proto)
213 continue;
214 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
215 (ipatoe->proto == QETH_PROT_IPV4) ?
216 4 : 16);
217 if (addr->proto == QETH_PROT_IPV4)
218 rc = !memcmp(addr_bits, ipatoe_bits,
219 min(32, ipatoe->mask_bits));
220 else
221 rc = !memcmp(addr_bits, ipatoe_bits,
222 min(128, ipatoe->mask_bits));
223 if (rc)
224 break;
225 }
226 /* invert? */
227 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
228 rc = !rc;
229 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
230 rc = !rc;
231
232 return rc;
233 }
234
235 /*
236 * Add IP to be added to todo list. If there is already an "add todo"
237 * in this list we just incremenent the reference count.
238 * Returns 0 if we just incremented reference count.
239 */
240 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
241 struct qeth_ipaddr *addr, int add)
242 {
243 struct qeth_ipaddr *tmp, *t;
244 int found = 0;
245
246 if (card->options.sniffer)
247 return 0;
248 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
249 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
250 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
251 return 0;
252 if ((tmp->proto == QETH_PROT_IPV4) &&
253 (addr->proto == QETH_PROT_IPV4) &&
254 (tmp->type == addr->type) &&
255 (tmp->is_multicast == addr->is_multicast) &&
256 (tmp->u.a4.addr == addr->u.a4.addr) &&
257 (tmp->u.a4.mask == addr->u.a4.mask)) {
258 found = 1;
259 break;
260 }
261 if ((tmp->proto == QETH_PROT_IPV6) &&
262 (addr->proto == QETH_PROT_IPV6) &&
263 (tmp->type == addr->type) &&
264 (tmp->is_multicast == addr->is_multicast) &&
265 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
266 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
267 sizeof(struct in6_addr)) == 0)) {
268 found = 1;
269 break;
270 }
271 }
272 if (found) {
273 if (addr->users != 0)
274 tmp->users += addr->users;
275 else
276 tmp->users += add ? 1 : -1;
277 if (tmp->users == 0) {
278 list_del(&tmp->entry);
279 kfree(tmp);
280 }
281 return 0;
282 } else {
283 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
284 list_add(&addr->entry, card->ip_tbd_list);
285 else {
286 if (addr->users == 0)
287 addr->users += add ? 1 : -1;
288 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
289 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
290 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
291 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
292 }
293 list_add_tail(&addr->entry, card->ip_tbd_list);
294 }
295 return 1;
296 }
297 }
298
299 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
300 {
301 unsigned long flags;
302 int rc = 0;
303
304 QETH_DBF_TEXT(TRACE, 4, "delip");
305
306 if (addr->proto == QETH_PROT_IPV4)
307 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
308 else {
309 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
310 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
311 }
312 spin_lock_irqsave(&card->ip_lock, flags);
313 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
314 spin_unlock_irqrestore(&card->ip_lock, flags);
315 return rc;
316 }
317
318 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
319 {
320 unsigned long flags;
321 int rc = 0;
322
323 QETH_DBF_TEXT(TRACE, 4, "addip");
324 if (addr->proto == QETH_PROT_IPV4)
325 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
326 else {
327 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
328 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
329 }
330 spin_lock_irqsave(&card->ip_lock, flags);
331 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
332 spin_unlock_irqrestore(&card->ip_lock, flags);
333 return rc;
334 }
335
336
337 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
338 enum qeth_prot_versions prot)
339 {
340 struct qeth_ipaddr *addr;
341
342 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
343 if (addr == NULL) {
344 return NULL;
345 }
346 addr->type = QETH_IP_TYPE_NORMAL;
347 addr->proto = prot;
348 return addr;
349 }
350
351 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
352 {
353 struct qeth_ipaddr *iptodo;
354 unsigned long flags;
355
356 QETH_DBF_TEXT(TRACE, 4, "delmc");
357 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
358 if (!iptodo) {
359 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
360 return;
361 }
362 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
363 spin_lock_irqsave(&card->ip_lock, flags);
364 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
365 kfree(iptodo);
366 spin_unlock_irqrestore(&card->ip_lock, flags);
367 }
368
369 /*
370 * Add/remove address to/from card's ip list, i.e. try to add or remove
371 * reference to/from an IP address that is already registered on the card.
372 * Returns:
373 * 0 address was on card and its reference count has been adjusted,
374 * but is still > 0, so nothing has to be done
375 * also returns 0 if card was not on card and the todo was to delete
376 * the address -> there is also nothing to be done
377 * 1 address was not on card and the todo is to add it to the card's ip
378 * list
379 * -1 address was on card and its reference count has been decremented
380 * to <= 0 by the todo -> address must be removed from card
381 */
382 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
383 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
384 {
385 struct qeth_ipaddr *addr;
386 int found = 0;
387
388 list_for_each_entry(addr, &card->ip_list, entry) {
389 if ((addr->proto == QETH_PROT_IPV4) &&
390 (todo->proto == QETH_PROT_IPV4) &&
391 (addr->type == todo->type) &&
392 (addr->u.a4.addr == todo->u.a4.addr) &&
393 (addr->u.a4.mask == todo->u.a4.mask)) {
394 found = 1;
395 break;
396 }
397 if ((addr->proto == QETH_PROT_IPV6) &&
398 (todo->proto == QETH_PROT_IPV6) &&
399 (addr->type == todo->type) &&
400 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
401 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
402 sizeof(struct in6_addr)) == 0)) {
403 found = 1;
404 break;
405 }
406 }
407 if (found) {
408 addr->users += todo->users;
409 if (addr->users <= 0) {
410 *__addr = addr;
411 return -1;
412 } else {
413 /* for VIPA and RXIP limit refcount to 1 */
414 if (addr->type != QETH_IP_TYPE_NORMAL)
415 addr->users = 1;
416 return 0;
417 }
418 }
419 if (todo->users > 0) {
420 /* for VIPA and RXIP limit refcount to 1 */
421 if (todo->type != QETH_IP_TYPE_NORMAL)
422 todo->users = 1;
423 return 1;
424 } else
425 return 0;
426 }
427
428 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
429 unsigned long *flags)
430 {
431 struct list_head fail_list;
432 struct qeth_ipaddr *addr, *tmp;
433 int rc;
434
435 INIT_LIST_HEAD(&fail_list);
436 again:
437 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
438 if (addr->is_multicast) {
439 list_del(&addr->entry);
440 spin_unlock_irqrestore(&card->ip_lock, *flags);
441 rc = qeth_l3_deregister_addr_entry(card, addr);
442 spin_lock_irqsave(&card->ip_lock, *flags);
443 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
444 kfree(addr);
445 else
446 list_add_tail(&addr->entry, &fail_list);
447 goto again;
448 }
449 }
450 list_splice(&fail_list, &card->ip_list);
451 }
452
453 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
454 {
455 struct list_head *tbd_list;
456 struct qeth_ipaddr *todo, *addr;
457 unsigned long flags;
458 int rc;
459
460 QETH_DBF_TEXT(TRACE, 2, "sdiplist");
461 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
462
463 if (card->options.sniffer)
464 return;
465 spin_lock_irqsave(&card->ip_lock, flags);
466 tbd_list = card->ip_tbd_list;
467 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
468 if (!card->ip_tbd_list) {
469 QETH_DBF_TEXT(TRACE, 0, "silnomem");
470 card->ip_tbd_list = tbd_list;
471 spin_unlock_irqrestore(&card->ip_lock, flags);
472 return;
473 } else
474 INIT_LIST_HEAD(card->ip_tbd_list);
475
476 while (!list_empty(tbd_list)) {
477 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
478 list_del(&todo->entry);
479 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
480 __qeth_l3_delete_all_mc(card, &flags);
481 kfree(todo);
482 continue;
483 }
484 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
485 if (rc == 0) {
486 /* nothing to be done; only adjusted refcount */
487 kfree(todo);
488 } else if (rc == 1) {
489 /* new entry to be added to on-card list */
490 spin_unlock_irqrestore(&card->ip_lock, flags);
491 rc = qeth_l3_register_addr_entry(card, todo);
492 spin_lock_irqsave(&card->ip_lock, flags);
493 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
494 list_add_tail(&todo->entry, &card->ip_list);
495 else
496 kfree(todo);
497 } else if (rc == -1) {
498 /* on-card entry to be removed */
499 list_del_init(&addr->entry);
500 spin_unlock_irqrestore(&card->ip_lock, flags);
501 rc = qeth_l3_deregister_addr_entry(card, addr);
502 spin_lock_irqsave(&card->ip_lock, flags);
503 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
504 kfree(addr);
505 else
506 list_add_tail(&addr->entry, &card->ip_list);
507 kfree(todo);
508 }
509 }
510 spin_unlock_irqrestore(&card->ip_lock, flags);
511 kfree(tbd_list);
512 }
513
514 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
515 int recover)
516 {
517 struct qeth_ipaddr *addr, *tmp;
518 unsigned long flags;
519
520 QETH_DBF_TEXT(TRACE, 4, "clearip");
521 if (recover && card->options.sniffer)
522 return;
523 spin_lock_irqsave(&card->ip_lock, flags);
524 /* clear todo list */
525 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
526 list_del(&addr->entry);
527 kfree(addr);
528 }
529
530 while (!list_empty(&card->ip_list)) {
531 addr = list_entry(card->ip_list.next,
532 struct qeth_ipaddr, entry);
533 list_del_init(&addr->entry);
534 if (clean) {
535 spin_unlock_irqrestore(&card->ip_lock, flags);
536 qeth_l3_deregister_addr_entry(card, addr);
537 spin_lock_irqsave(&card->ip_lock, flags);
538 }
539 if (!recover || addr->is_multicast) {
540 kfree(addr);
541 continue;
542 }
543 list_add_tail(&addr->entry, card->ip_tbd_list);
544 }
545 spin_unlock_irqrestore(&card->ip_lock, flags);
546 }
547
548 static int qeth_l3_address_exists_in_list(struct list_head *list,
549 struct qeth_ipaddr *addr, int same_type)
550 {
551 struct qeth_ipaddr *tmp;
552
553 list_for_each_entry(tmp, list, entry) {
554 if ((tmp->proto == QETH_PROT_IPV4) &&
555 (addr->proto == QETH_PROT_IPV4) &&
556 ((same_type && (tmp->type == addr->type)) ||
557 (!same_type && (tmp->type != addr->type))) &&
558 (tmp->u.a4.addr == addr->u.a4.addr))
559 return 1;
560
561 if ((tmp->proto == QETH_PROT_IPV6) &&
562 (addr->proto == QETH_PROT_IPV6) &&
563 ((same_type && (tmp->type == addr->type)) ||
564 (!same_type && (tmp->type != addr->type))) &&
565 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
566 sizeof(struct in6_addr)) == 0))
567 return 1;
568
569 }
570 return 0;
571 }
572
573 static int qeth_l3_send_setdelmc(struct qeth_card *card,
574 struct qeth_ipaddr *addr, int ipacmd)
575 {
576 int rc;
577 struct qeth_cmd_buffer *iob;
578 struct qeth_ipa_cmd *cmd;
579
580 QETH_DBF_TEXT(TRACE, 4, "setdelmc");
581
582 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
583 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
584 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
585 if (addr->proto == QETH_PROT_IPV6)
586 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
587 sizeof(struct in6_addr));
588 else
589 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
590
591 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
592
593 return rc;
594 }
595
596 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
597 {
598 int i, j;
599 for (i = 0; i < 16; i++) {
600 j = (len) - (i * 8);
601 if (j >= 8)
602 netmask[i] = 0xff;
603 else if (j > 0)
604 netmask[i] = (u8)(0xFF00 >> j);
605 else
606 netmask[i] = 0;
607 }
608 }
609
610 static int qeth_l3_send_setdelip(struct qeth_card *card,
611 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
612 {
613 int rc;
614 struct qeth_cmd_buffer *iob;
615 struct qeth_ipa_cmd *cmd;
616 __u8 netmask[16];
617
618 QETH_DBF_TEXT(TRACE, 4, "setdelip");
619 QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
620
621 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
622 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
623 if (addr->proto == QETH_PROT_IPV6) {
624 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
625 sizeof(struct in6_addr));
626 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
627 memcpy(cmd->data.setdelip6.mask, netmask,
628 sizeof(struct in6_addr));
629 cmd->data.setdelip6.flags = flags;
630 } else {
631 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
632 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
633 cmd->data.setdelip4.flags = flags;
634 }
635
636 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
637
638 return rc;
639 }
640
641 static int qeth_l3_send_setrouting(struct qeth_card *card,
642 enum qeth_routing_types type, enum qeth_prot_versions prot)
643 {
644 int rc;
645 struct qeth_ipa_cmd *cmd;
646 struct qeth_cmd_buffer *iob;
647
648 QETH_DBF_TEXT(TRACE, 4, "setroutg");
649 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
650 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
651 cmd->data.setrtg.type = (type);
652 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
653
654 return rc;
655 }
656
657 static void qeth_l3_correct_routing_type(struct qeth_card *card,
658 enum qeth_routing_types *type, enum qeth_prot_versions prot)
659 {
660 if (card->info.type == QETH_CARD_TYPE_IQD) {
661 switch (*type) {
662 case NO_ROUTER:
663 case PRIMARY_CONNECTOR:
664 case SECONDARY_CONNECTOR:
665 case MULTICAST_ROUTER:
666 return;
667 default:
668 goto out_inval;
669 }
670 } else {
671 switch (*type) {
672 case NO_ROUTER:
673 case PRIMARY_ROUTER:
674 case SECONDARY_ROUTER:
675 return;
676 case MULTICAST_ROUTER:
677 if (qeth_is_ipafunc_supported(card, prot,
678 IPA_OSA_MC_ROUTER))
679 return;
680 default:
681 goto out_inval;
682 }
683 }
684 out_inval:
685 *type = NO_ROUTER;
686 }
687
688 int qeth_l3_setrouting_v4(struct qeth_card *card)
689 {
690 int rc;
691
692 QETH_DBF_TEXT(TRACE, 3, "setrtg4");
693
694 qeth_l3_correct_routing_type(card, &card->options.route4.type,
695 QETH_PROT_IPV4);
696
697 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
698 QETH_PROT_IPV4);
699 if (rc) {
700 card->options.route4.type = NO_ROUTER;
701 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
702 " on %s. Type set to 'no router'.\n", rc,
703 QETH_CARD_IFNAME(card));
704 }
705 return rc;
706 }
707
708 int qeth_l3_setrouting_v6(struct qeth_card *card)
709 {
710 int rc = 0;
711
712 QETH_DBF_TEXT(TRACE, 3, "setrtg6");
713 #ifdef CONFIG_QETH_IPV6
714
715 if (!qeth_is_supported(card, IPA_IPV6))
716 return 0;
717 qeth_l3_correct_routing_type(card, &card->options.route6.type,
718 QETH_PROT_IPV6);
719
720 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
721 QETH_PROT_IPV6);
722 if (rc) {
723 card->options.route6.type = NO_ROUTER;
724 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
725 " on %s. Type set to 'no router'.\n", rc,
726 QETH_CARD_IFNAME(card));
727 }
728 #endif
729 return rc;
730 }
731
732 /*
733 * IP address takeover related functions
734 */
735 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
736 {
737
738 struct qeth_ipato_entry *ipatoe, *tmp;
739 unsigned long flags;
740
741 spin_lock_irqsave(&card->ip_lock, flags);
742 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
743 list_del(&ipatoe->entry);
744 kfree(ipatoe);
745 }
746 spin_unlock_irqrestore(&card->ip_lock, flags);
747 }
748
749 int qeth_l3_add_ipato_entry(struct qeth_card *card,
750 struct qeth_ipato_entry *new)
751 {
752 struct qeth_ipato_entry *ipatoe;
753 unsigned long flags;
754 int rc = 0;
755
756 QETH_DBF_TEXT(TRACE, 2, "addipato");
757 spin_lock_irqsave(&card->ip_lock, flags);
758 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
759 if (ipatoe->proto != new->proto)
760 continue;
761 if (!memcmp(ipatoe->addr, new->addr,
762 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
763 (ipatoe->mask_bits == new->mask_bits)) {
764 rc = -EEXIST;
765 break;
766 }
767 }
768 if (!rc)
769 list_add_tail(&new->entry, &card->ipato.entries);
770
771 spin_unlock_irqrestore(&card->ip_lock, flags);
772 return rc;
773 }
774
775 void qeth_l3_del_ipato_entry(struct qeth_card *card,
776 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
777 {
778 struct qeth_ipato_entry *ipatoe, *tmp;
779 unsigned long flags;
780
781 QETH_DBF_TEXT(TRACE, 2, "delipato");
782 spin_lock_irqsave(&card->ip_lock, flags);
783 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
784 if (ipatoe->proto != proto)
785 continue;
786 if (!memcmp(ipatoe->addr, addr,
787 (proto == QETH_PROT_IPV4)? 4:16) &&
788 (ipatoe->mask_bits == mask_bits)) {
789 list_del(&ipatoe->entry);
790 kfree(ipatoe);
791 }
792 }
793 spin_unlock_irqrestore(&card->ip_lock, flags);
794 }
795
796 /*
797 * VIPA related functions
798 */
799 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
800 const u8 *addr)
801 {
802 struct qeth_ipaddr *ipaddr;
803 unsigned long flags;
804 int rc = 0;
805
806 ipaddr = qeth_l3_get_addr_buffer(proto);
807 if (ipaddr) {
808 if (proto == QETH_PROT_IPV4) {
809 QETH_DBF_TEXT(TRACE, 2, "addvipa4");
810 memcpy(&ipaddr->u.a4.addr, addr, 4);
811 ipaddr->u.a4.mask = 0;
812 } else if (proto == QETH_PROT_IPV6) {
813 QETH_DBF_TEXT(TRACE, 2, "addvipa6");
814 memcpy(&ipaddr->u.a6.addr, addr, 16);
815 ipaddr->u.a6.pfxlen = 0;
816 }
817 ipaddr->type = QETH_IP_TYPE_VIPA;
818 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
819 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
820 } else
821 return -ENOMEM;
822 spin_lock_irqsave(&card->ip_lock, flags);
823 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
824 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
825 rc = -EEXIST;
826 spin_unlock_irqrestore(&card->ip_lock, flags);
827 if (rc) {
828 return rc;
829 }
830 if (!qeth_l3_add_ip(card, ipaddr))
831 kfree(ipaddr);
832 qeth_l3_set_ip_addr_list(card);
833 return rc;
834 }
835
836 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
837 const u8 *addr)
838 {
839 struct qeth_ipaddr *ipaddr;
840
841 ipaddr = qeth_l3_get_addr_buffer(proto);
842 if (ipaddr) {
843 if (proto == QETH_PROT_IPV4) {
844 QETH_DBF_TEXT(TRACE, 2, "delvipa4");
845 memcpy(&ipaddr->u.a4.addr, addr, 4);
846 ipaddr->u.a4.mask = 0;
847 } else if (proto == QETH_PROT_IPV6) {
848 QETH_DBF_TEXT(TRACE, 2, "delvipa6");
849 memcpy(&ipaddr->u.a6.addr, addr, 16);
850 ipaddr->u.a6.pfxlen = 0;
851 }
852 ipaddr->type = QETH_IP_TYPE_VIPA;
853 } else
854 return;
855 if (!qeth_l3_delete_ip(card, ipaddr))
856 kfree(ipaddr);
857 qeth_l3_set_ip_addr_list(card);
858 }
859
860 /*
861 * proxy ARP related functions
862 */
863 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
864 const u8 *addr)
865 {
866 struct qeth_ipaddr *ipaddr;
867 unsigned long flags;
868 int rc = 0;
869
870 ipaddr = qeth_l3_get_addr_buffer(proto);
871 if (ipaddr) {
872 if (proto == QETH_PROT_IPV4) {
873 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
874 memcpy(&ipaddr->u.a4.addr, addr, 4);
875 ipaddr->u.a4.mask = 0;
876 } else if (proto == QETH_PROT_IPV6) {
877 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
878 memcpy(&ipaddr->u.a6.addr, addr, 16);
879 ipaddr->u.a6.pfxlen = 0;
880 }
881 ipaddr->type = QETH_IP_TYPE_RXIP;
882 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
883 ipaddr->del_flags = 0;
884 } else
885 return -ENOMEM;
886 spin_lock_irqsave(&card->ip_lock, flags);
887 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
888 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
889 rc = -EEXIST;
890 spin_unlock_irqrestore(&card->ip_lock, flags);
891 if (rc) {
892 return rc;
893 }
894 if (!qeth_l3_add_ip(card, ipaddr))
895 kfree(ipaddr);
896 qeth_l3_set_ip_addr_list(card);
897 return 0;
898 }
899
900 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
901 const u8 *addr)
902 {
903 struct qeth_ipaddr *ipaddr;
904
905 ipaddr = qeth_l3_get_addr_buffer(proto);
906 if (ipaddr) {
907 if (proto == QETH_PROT_IPV4) {
908 QETH_DBF_TEXT(TRACE, 2, "addrxip4");
909 memcpy(&ipaddr->u.a4.addr, addr, 4);
910 ipaddr->u.a4.mask = 0;
911 } else if (proto == QETH_PROT_IPV6) {
912 QETH_DBF_TEXT(TRACE, 2, "addrxip6");
913 memcpy(&ipaddr->u.a6.addr, addr, 16);
914 ipaddr->u.a6.pfxlen = 0;
915 }
916 ipaddr->type = QETH_IP_TYPE_RXIP;
917 } else
918 return;
919 if (!qeth_l3_delete_ip(card, ipaddr))
920 kfree(ipaddr);
921 qeth_l3_set_ip_addr_list(card);
922 }
923
924 static int qeth_l3_register_addr_entry(struct qeth_card *card,
925 struct qeth_ipaddr *addr)
926 {
927 char buf[50];
928 int rc = 0;
929 int cnt = 3;
930
931 if (addr->proto == QETH_PROT_IPV4) {
932 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
933 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
934 } else if (addr->proto == QETH_PROT_IPV6) {
935 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
936 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
937 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
938 } else {
939 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
940 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
941 }
942 do {
943 if (addr->is_multicast)
944 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
945 else
946 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
947 addr->set_flags);
948 if (rc)
949 QETH_DBF_TEXT(TRACE, 2, "failed");
950 } while ((--cnt > 0) && rc);
951 if (rc) {
952 QETH_DBF_TEXT(TRACE, 2, "FAILED");
953 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
954 dev_warn(&card->gdev->dev,
955 "Registering IP address %s failed\n", buf);
956 }
957 return rc;
958 }
959
960 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
961 struct qeth_ipaddr *addr)
962 {
963 int rc = 0;
964
965 if (addr->proto == QETH_PROT_IPV4) {
966 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
967 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
968 } else if (addr->proto == QETH_PROT_IPV6) {
969 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
970 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
971 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
972 } else {
973 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
974 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
975 }
976 if (addr->is_multicast)
977 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
978 else
979 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
980 addr->del_flags);
981 if (rc)
982 QETH_DBF_TEXT(TRACE, 2, "failed");
983
984 return rc;
985 }
986
987 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
988 {
989 if (cast_type == RTN_MULTICAST)
990 return QETH_CAST_MULTICAST;
991 if (cast_type == RTN_BROADCAST)
992 return QETH_CAST_BROADCAST;
993 return QETH_CAST_UNICAST;
994 }
995
996 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
997 {
998 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
999 if (cast_type == RTN_MULTICAST)
1000 return ct | QETH_CAST_MULTICAST;
1001 if (cast_type == RTN_ANYCAST)
1002 return ct | QETH_CAST_ANYCAST;
1003 if (cast_type == RTN_BROADCAST)
1004 return ct | QETH_CAST_BROADCAST;
1005 return ct | QETH_CAST_UNICAST;
1006 }
1007
1008 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
1009 __u32 mode)
1010 {
1011 int rc;
1012 struct qeth_cmd_buffer *iob;
1013 struct qeth_ipa_cmd *cmd;
1014
1015 QETH_DBF_TEXT(TRACE, 4, "adpmode");
1016
1017 iob = qeth_get_adapter_cmd(card, command,
1018 sizeof(struct qeth_ipacmd_setadpparms));
1019 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1020 cmd->data.setadapterparms.data.mode = mode;
1021 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
1022 NULL);
1023 return rc;
1024 }
1025
1026 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
1027 {
1028 int rc;
1029
1030 QETH_DBF_TEXT(TRACE, 4, "adphstr");
1031
1032 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1033 rc = qeth_l3_send_setadp_mode(card,
1034 IPA_SETADP_SET_BROADCAST_MODE,
1035 card->options.broadcast_mode);
1036 if (rc)
1037 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1038 "device %s: x%x\n",
1039 CARD_BUS_ID(card), rc);
1040 rc = qeth_l3_send_setadp_mode(card,
1041 IPA_SETADP_ALTER_MAC_ADDRESS,
1042 card->options.macaddr_mode);
1043 if (rc)
1044 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1045 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1046 return rc;
1047 }
1048 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1049 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1050 "to set broadcast mode, using ALLRINGS "
1051 "on device %s:\n", CARD_BUS_ID(card));
1052 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1053 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1054 "to set macaddr mode, using NONCANONICAL "
1055 "on device %s:\n", CARD_BUS_ID(card));
1056 return 0;
1057 }
1058
1059 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1060 {
1061 int rc;
1062
1063 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1064
1065 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1066 dev_info(&card->gdev->dev,
1067 "set adapter parameters not supported.\n");
1068 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1069 return 0;
1070 }
1071 rc = qeth_query_setadapterparms(card);
1072 if (rc) {
1073 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1074 "0x%x\n", dev_name(&card->gdev->dev), rc);
1075 return rc;
1076 }
1077 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1078 rc = qeth_setadpparms_change_macaddr(card);
1079 if (rc)
1080 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1081 " address failed\n");
1082 }
1083
1084 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1085 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1086 rc = qeth_l3_setadapter_hstr(card);
1087
1088 return rc;
1089 }
1090
1091 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1092 struct qeth_reply *reply, unsigned long data)
1093 {
1094 struct qeth_ipa_cmd *cmd;
1095
1096 QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1097
1098 cmd = (struct qeth_ipa_cmd *) data;
1099 if (cmd->hdr.return_code == 0) {
1100 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1101 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1102 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1103 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1104 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1105 }
1106 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1107 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1108 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1109 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1110 }
1111 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1112 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1113 card->info.tx_csum_mask =
1114 cmd->data.setassparms.data.flags_32bit;
1115 QETH_DBF_TEXT_(TRACE, 3, "tcsu:%d", card->info.tx_csum_mask);
1116 }
1117
1118 return 0;
1119 }
1120
1121 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1122 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1123 __u16 len, enum qeth_prot_versions prot)
1124 {
1125 struct qeth_cmd_buffer *iob;
1126 struct qeth_ipa_cmd *cmd;
1127
1128 QETH_DBF_TEXT(TRACE, 4, "getasscm");
1129 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1130
1131 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1132 cmd->data.setassparms.hdr.assist_no = ipa_func;
1133 cmd->data.setassparms.hdr.length = 8 + len;
1134 cmd->data.setassparms.hdr.command_code = cmd_code;
1135 cmd->data.setassparms.hdr.return_code = 0;
1136 cmd->data.setassparms.hdr.seq_no = 0;
1137
1138 return iob;
1139 }
1140
1141 static int qeth_l3_send_setassparms(struct qeth_card *card,
1142 struct qeth_cmd_buffer *iob, __u16 len, long data,
1143 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1144 unsigned long),
1145 void *reply_param)
1146 {
1147 int rc;
1148 struct qeth_ipa_cmd *cmd;
1149
1150 QETH_DBF_TEXT(TRACE, 4, "sendassp");
1151
1152 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1153 if (len <= sizeof(__u32))
1154 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1155 else /* (len > sizeof(__u32)) */
1156 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1157
1158 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1159 return rc;
1160 }
1161
1162 #ifdef CONFIG_QETH_IPV6
1163 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1164 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1165 {
1166 int rc;
1167 struct qeth_cmd_buffer *iob;
1168
1169 QETH_DBF_TEXT(TRACE, 4, "simassp6");
1170 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1171 0, QETH_PROT_IPV6);
1172 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1173 qeth_l3_default_setassparms_cb, NULL);
1174 return rc;
1175 }
1176 #endif
1177
1178 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1179 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1180 {
1181 int rc;
1182 int length = 0;
1183 struct qeth_cmd_buffer *iob;
1184
1185 QETH_DBF_TEXT(TRACE, 4, "simassp4");
1186 if (data)
1187 length = sizeof(__u32);
1188 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1189 length, QETH_PROT_IPV4);
1190 rc = qeth_l3_send_setassparms(card, iob, length, data,
1191 qeth_l3_default_setassparms_cb, NULL);
1192 return rc;
1193 }
1194
1195 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1196 {
1197 int rc;
1198
1199 QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1200
1201 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1202 dev_info(&card->gdev->dev,
1203 "ARP processing not supported on %s!\n",
1204 QETH_CARD_IFNAME(card));
1205 return 0;
1206 }
1207 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1208 IPA_CMD_ASS_START, 0);
1209 if (rc) {
1210 dev_warn(&card->gdev->dev,
1211 "Starting ARP processing support for %s failed\n",
1212 QETH_CARD_IFNAME(card));
1213 }
1214 return rc;
1215 }
1216
1217 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1218 {
1219 int rc;
1220
1221 QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1222
1223 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1224 dev_info(&card->gdev->dev,
1225 "Hardware IP fragmentation not supported on %s\n",
1226 QETH_CARD_IFNAME(card));
1227 return -EOPNOTSUPP;
1228 }
1229
1230 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1231 IPA_CMD_ASS_START, 0);
1232 if (rc) {
1233 dev_warn(&card->gdev->dev,
1234 "Starting IP fragmentation support for %s failed\n",
1235 QETH_CARD_IFNAME(card));
1236 } else
1237 dev_info(&card->gdev->dev,
1238 "Hardware IP fragmentation enabled \n");
1239 return rc;
1240 }
1241
1242 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1243 {
1244 int rc;
1245
1246 QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1247
1248 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1249 dev_info(&card->gdev->dev,
1250 "Inbound source MAC-address not supported on %s\n",
1251 QETH_CARD_IFNAME(card));
1252 return -EOPNOTSUPP;
1253 }
1254
1255 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1256 IPA_CMD_ASS_START, 0);
1257 if (rc)
1258 dev_warn(&card->gdev->dev,
1259 "Starting source MAC-address support for %s failed\n",
1260 QETH_CARD_IFNAME(card));
1261 return rc;
1262 }
1263
1264 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1265 {
1266 int rc = 0;
1267
1268 QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1269
1270 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1271 dev_info(&card->gdev->dev,
1272 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1273 return -EOPNOTSUPP;
1274 }
1275
1276 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1277 IPA_CMD_ASS_START, 0);
1278 if (rc) {
1279 dev_warn(&card->gdev->dev,
1280 "Starting VLAN support for %s failed\n",
1281 QETH_CARD_IFNAME(card));
1282 } else {
1283 dev_info(&card->gdev->dev, "VLAN enabled\n");
1284 }
1285 return rc;
1286 }
1287
1288 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1289 {
1290 int rc;
1291
1292 QETH_DBF_TEXT(TRACE, 3, "stmcast");
1293
1294 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1295 dev_info(&card->gdev->dev,
1296 "Multicast not supported on %s\n",
1297 QETH_CARD_IFNAME(card));
1298 return -EOPNOTSUPP;
1299 }
1300
1301 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1302 IPA_CMD_ASS_START, 0);
1303 if (rc) {
1304 dev_warn(&card->gdev->dev,
1305 "Starting multicast support for %s failed\n",
1306 QETH_CARD_IFNAME(card));
1307 } else {
1308 dev_info(&card->gdev->dev, "Multicast enabled\n");
1309 card->dev->flags |= IFF_MULTICAST;
1310 }
1311 return rc;
1312 }
1313
1314 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1315 struct qeth_reply *reply, unsigned long data)
1316 {
1317 struct qeth_ipa_cmd *cmd;
1318
1319 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1320
1321 cmd = (struct qeth_ipa_cmd *) data;
1322 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1323 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1324 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1325 } else {
1326 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1327 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1328 }
1329 QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1330 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1331 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1332 return 0;
1333 }
1334
1335 static int qeth_l3_query_ipassists(struct qeth_card *card,
1336 enum qeth_prot_versions prot)
1337 {
1338 int rc;
1339 struct qeth_cmd_buffer *iob;
1340
1341 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1342 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1343 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1344 return rc;
1345 }
1346
1347 #ifdef CONFIG_QETH_IPV6
1348 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1349 {
1350 int rc;
1351
1352 QETH_DBF_TEXT(TRACE, 3, "softipv6");
1353
1354 if (card->info.type == QETH_CARD_TYPE_IQD)
1355 goto out;
1356
1357 rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1358 if (rc) {
1359 dev_err(&card->gdev->dev,
1360 "Activating IPv6 support for %s failed\n",
1361 QETH_CARD_IFNAME(card));
1362 return rc;
1363 }
1364 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1365 IPA_CMD_ASS_START, 3);
1366 if (rc) {
1367 dev_err(&card->gdev->dev,
1368 "Activating IPv6 support for %s failed\n",
1369 QETH_CARD_IFNAME(card));
1370 return rc;
1371 }
1372 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1373 IPA_CMD_ASS_START);
1374 if (rc) {
1375 dev_err(&card->gdev->dev,
1376 "Activating IPv6 support for %s failed\n",
1377 QETH_CARD_IFNAME(card));
1378 return rc;
1379 }
1380 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1381 IPA_CMD_ASS_START);
1382 if (rc) {
1383 dev_warn(&card->gdev->dev,
1384 "Enabling the passthrough mode for %s failed\n",
1385 QETH_CARD_IFNAME(card));
1386 return rc;
1387 }
1388 out:
1389 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1390 return 0;
1391 }
1392 #endif
1393
1394 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1395 {
1396 int rc = 0;
1397
1398 QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1399
1400 if (!qeth_is_supported(card, IPA_IPV6)) {
1401 dev_info(&card->gdev->dev,
1402 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1403 return 0;
1404 }
1405 #ifdef CONFIG_QETH_IPV6
1406 rc = qeth_l3_softsetup_ipv6(card);
1407 #endif
1408 return rc ;
1409 }
1410
1411 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1412 {
1413 int rc;
1414
1415 QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1416 card->info.broadcast_capable = 0;
1417 if (!qeth_is_supported(card, IPA_FILTERING)) {
1418 dev_info(&card->gdev->dev,
1419 "Broadcast not supported on %s\n",
1420 QETH_CARD_IFNAME(card));
1421 rc = -EOPNOTSUPP;
1422 goto out;
1423 }
1424 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1425 IPA_CMD_ASS_START, 0);
1426 if (rc) {
1427 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1428 "%s failed\n", QETH_CARD_IFNAME(card));
1429 goto out;
1430 }
1431
1432 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1433 IPA_CMD_ASS_CONFIGURE, 1);
1434 if (rc) {
1435 dev_warn(&card->gdev->dev,
1436 "Setting up broadcast filtering for %s failed\n",
1437 QETH_CARD_IFNAME(card));
1438 goto out;
1439 }
1440 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1441 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1442 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1443 IPA_CMD_ASS_ENABLE, 1);
1444 if (rc) {
1445 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1446 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1447 goto out;
1448 }
1449 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1450 out:
1451 if (card->info.broadcast_capable)
1452 card->dev->flags |= IFF_BROADCAST;
1453 else
1454 card->dev->flags &= ~IFF_BROADCAST;
1455 return rc;
1456 }
1457
1458 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1459 {
1460 int rc;
1461
1462 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1463 IPA_CMD_ASS_START, 0);
1464 if (rc) {
1465 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1466 "failed, using SW checksumming\n",
1467 QETH_CARD_IFNAME(card));
1468 return rc;
1469 }
1470 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1471 IPA_CMD_ASS_ENABLE,
1472 card->info.csum_mask);
1473 if (rc) {
1474 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1475 "failed, using SW checksumming\n",
1476 QETH_CARD_IFNAME(card));
1477 return rc;
1478 }
1479 return 0;
1480 }
1481
1482 int qeth_l3_set_rx_csum(struct qeth_card *card,
1483 enum qeth_checksum_types csum_type)
1484 {
1485 int rc = 0;
1486
1487 if (card->options.checksum_type == HW_CHECKSUMMING) {
1488 if ((csum_type != HW_CHECKSUMMING) &&
1489 (card->state != CARD_STATE_DOWN)) {
1490 rc = qeth_l3_send_simple_setassparms(card,
1491 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1492 if (rc)
1493 return -EIO;
1494 }
1495 } else {
1496 if (csum_type == HW_CHECKSUMMING) {
1497 if (card->state != CARD_STATE_DOWN) {
1498 if (!qeth_is_supported(card,
1499 IPA_INBOUND_CHECKSUM))
1500 return -EPERM;
1501 rc = qeth_l3_send_checksum_command(card);
1502 if (rc)
1503 return -EIO;
1504 }
1505 }
1506 }
1507 card->options.checksum_type = csum_type;
1508 return rc;
1509 }
1510
1511 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1512 {
1513 int rc = 0;
1514
1515 QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1516
1517 if (card->options.checksum_type == NO_CHECKSUMMING) {
1518 dev_info(&card->gdev->dev,
1519 "Using no checksumming on %s.\n",
1520 QETH_CARD_IFNAME(card));
1521 return 0;
1522 }
1523 if (card->options.checksum_type == SW_CHECKSUMMING) {
1524 dev_info(&card->gdev->dev,
1525 "Using SW checksumming on %s.\n",
1526 QETH_CARD_IFNAME(card));
1527 return 0;
1528 }
1529 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1530 dev_info(&card->gdev->dev,
1531 "Inbound HW Checksumming not "
1532 "supported on %s,\ncontinuing "
1533 "using Inbound SW Checksumming\n",
1534 QETH_CARD_IFNAME(card));
1535 card->options.checksum_type = SW_CHECKSUMMING;
1536 return 0;
1537 }
1538 rc = qeth_l3_send_checksum_command(card);
1539 if (!rc)
1540 dev_info(&card->gdev->dev,
1541 "HW Checksumming (inbound) enabled\n");
1542
1543 return rc;
1544 }
1545
1546 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1547 {
1548 int rc = 0;
1549
1550 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1551 return rc;
1552 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1553 IPA_CMD_ASS_START, 0);
1554 if (rc)
1555 goto err_out;
1556 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1557 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1558 if (rc)
1559 goto err_out;
1560 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1561 return rc;
1562 err_out:
1563 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1564 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1565 return rc;
1566 }
1567
1568 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1569 {
1570 int rc;
1571
1572 QETH_DBF_TEXT(TRACE, 3, "sttso");
1573
1574 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1575 dev_info(&card->gdev->dev,
1576 "Outbound TSO not supported on %s\n",
1577 QETH_CARD_IFNAME(card));
1578 rc = -EOPNOTSUPP;
1579 } else {
1580 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1581 IPA_CMD_ASS_START, 0);
1582 if (rc)
1583 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1584 "segmentation offload for %s failed\n",
1585 QETH_CARD_IFNAME(card));
1586 else
1587 dev_info(&card->gdev->dev,
1588 "Outbound TSO enabled\n");
1589 }
1590 if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1591 card->options.large_send = QETH_LARGE_SEND_NO;
1592 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1593 }
1594 return rc;
1595 }
1596
1597 static int qeth_l3_start_ipassists(struct qeth_card *card)
1598 {
1599 QETH_DBF_TEXT(TRACE, 3, "strtipas");
1600
1601 qeth_set_access_ctrl_online(card); /* go on*/
1602 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1603 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1604 qeth_l3_start_ipa_source_mac(card); /* go on*/
1605 qeth_l3_start_ipa_vlan(card); /* go on*/
1606 qeth_l3_start_ipa_multicast(card); /* go on*/
1607 qeth_l3_start_ipa_ipv6(card); /* go on*/
1608 qeth_l3_start_ipa_broadcast(card); /* go on*/
1609 qeth_l3_start_ipa_checksum(card); /* go on*/
1610 qeth_l3_start_ipa_tx_checksum(card);
1611 qeth_l3_start_ipa_tso(card); /* go on*/
1612 return 0;
1613 }
1614
1615 static int qeth_l3_put_unique_id(struct qeth_card *card)
1616 {
1617
1618 int rc = 0;
1619 struct qeth_cmd_buffer *iob;
1620 struct qeth_ipa_cmd *cmd;
1621
1622 QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1623
1624 if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1625 UNIQUE_ID_NOT_BY_CARD)
1626 return -1;
1627 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1628 QETH_PROT_IPV6);
1629 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1630 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1631 card->info.unique_id;
1632 memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1633 card->dev->dev_addr, OSA_ADDR_LEN);
1634 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1635 return rc;
1636 }
1637
1638 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1639 struct qeth_reply *reply, unsigned long data)
1640 {
1641 struct qeth_ipa_cmd *cmd;
1642
1643 cmd = (struct qeth_ipa_cmd *) data;
1644 if (cmd->hdr.return_code == 0)
1645 memcpy(card->dev->dev_addr,
1646 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1647 else
1648 random_ether_addr(card->dev->dev_addr);
1649
1650 return 0;
1651 }
1652
1653 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1654 {
1655 int rc = 0;
1656 struct qeth_cmd_buffer *iob;
1657 struct qeth_ipa_cmd *cmd;
1658
1659 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1660
1661 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1662 QETH_PROT_IPV6);
1663 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1664 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1665 card->info.unique_id;
1666
1667 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1668 NULL);
1669 return rc;
1670 }
1671
1672 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1673 struct qeth_reply *reply, unsigned long data)
1674 {
1675 struct qeth_ipa_cmd *cmd;
1676
1677 cmd = (struct qeth_ipa_cmd *) data;
1678 if (cmd->hdr.return_code == 0)
1679 card->info.unique_id = *((__u16 *)
1680 &cmd->data.create_destroy_addr.unique_id[6]);
1681 else {
1682 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1683 UNIQUE_ID_NOT_BY_CARD;
1684 dev_warn(&card->gdev->dev, "The network adapter failed to "
1685 "generate a unique ID\n");
1686 }
1687 return 0;
1688 }
1689
1690 static int qeth_l3_get_unique_id(struct qeth_card *card)
1691 {
1692 int rc = 0;
1693 struct qeth_cmd_buffer *iob;
1694 struct qeth_ipa_cmd *cmd;
1695
1696 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1697
1698 if (!qeth_is_supported(card, IPA_IPV6)) {
1699 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1700 UNIQUE_ID_NOT_BY_CARD;
1701 return 0;
1702 }
1703
1704 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1705 QETH_PROT_IPV6);
1706 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1707 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1708 card->info.unique_id;
1709
1710 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1711 return rc;
1712 }
1713
1714 static int
1715 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1716 unsigned long data)
1717 {
1718 struct qeth_ipa_cmd *cmd;
1719 __u16 rc;
1720
1721 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1722
1723 cmd = (struct qeth_ipa_cmd *)data;
1724 rc = cmd->hdr.return_code;
1725 if (rc)
1726 QETH_DBF_TEXT_(TRACE, 2, "dxter%x", rc);
1727 switch (cmd->data.diagass.action) {
1728 case QETH_DIAGS_CMD_TRACE_QUERY:
1729 break;
1730 case QETH_DIAGS_CMD_TRACE_DISABLE:
1731 switch (rc) {
1732 case 0:
1733 case IPA_RC_INVALID_SUBCMD:
1734 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1735 dev_info(&card->gdev->dev, "The HiperSockets network "
1736 "traffic analyzer is deactivated\n");
1737 break;
1738 default:
1739 break;
1740 }
1741 break;
1742 case QETH_DIAGS_CMD_TRACE_ENABLE:
1743 switch (rc) {
1744 case 0:
1745 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1746 dev_info(&card->gdev->dev, "The HiperSockets network "
1747 "traffic analyzer is activated\n");
1748 break;
1749 case IPA_RC_HARDWARE_AUTH_ERROR:
1750 dev_warn(&card->gdev->dev, "The device is not "
1751 "authorized to run as a HiperSockets network "
1752 "traffic analyzer\n");
1753 break;
1754 case IPA_RC_TRACE_ALREADY_ACTIVE:
1755 dev_warn(&card->gdev->dev, "A HiperSockets "
1756 "network traffic analyzer is already "
1757 "active in the HiperSockets LAN\n");
1758 break;
1759 default:
1760 break;
1761 }
1762 break;
1763 default:
1764 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1765 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1766 }
1767
1768 return 0;
1769 }
1770
1771 static int
1772 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1773 {
1774 struct qeth_cmd_buffer *iob;
1775 struct qeth_ipa_cmd *cmd;
1776
1777 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1778
1779 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1780 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1781 cmd->data.diagass.subcmd_len = 16;
1782 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1783 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1784 cmd->data.diagass.action = diags_cmd;
1785 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1786 }
1787
1788 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1789 struct net_device *dev)
1790 {
1791 if (dev->type == ARPHRD_IEEE802_TR)
1792 ip_tr_mc_map(ipm, mac);
1793 else
1794 ip_eth_mc_map(ipm, mac);
1795 }
1796
1797 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1798 {
1799 struct qeth_ipaddr *ipm;
1800 struct ip_mc_list *im4;
1801 char buf[MAX_ADDR_LEN];
1802
1803 QETH_DBF_TEXT(TRACE, 4, "addmc");
1804 for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1805 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1806 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1807 if (!ipm)
1808 continue;
1809 ipm->u.a4.addr = im4->multiaddr;
1810 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1811 ipm->is_multicast = 1;
1812 if (!qeth_l3_add_ip(card, ipm))
1813 kfree(ipm);
1814 }
1815 }
1816
1817 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1818 {
1819 struct in_device *in_dev;
1820 struct vlan_group *vg;
1821 int i;
1822
1823 QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1824 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1825 return;
1826
1827 vg = card->vlangrp;
1828 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1829 struct net_device *netdev = vlan_group_get_device(vg, i);
1830 if (netdev == NULL ||
1831 !(netdev->flags & IFF_UP))
1832 continue;
1833 in_dev = in_dev_get(netdev);
1834 if (!in_dev)
1835 continue;
1836 read_lock(&in_dev->mc_list_lock);
1837 qeth_l3_add_mc(card, in_dev);
1838 read_unlock(&in_dev->mc_list_lock);
1839 in_dev_put(in_dev);
1840 }
1841 }
1842
1843 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1844 {
1845 struct in_device *in4_dev;
1846
1847 QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1848 in4_dev = in_dev_get(card->dev);
1849 if (in4_dev == NULL)
1850 return;
1851 read_lock(&in4_dev->mc_list_lock);
1852 qeth_l3_add_mc(card, in4_dev);
1853 qeth_l3_add_vlan_mc(card);
1854 read_unlock(&in4_dev->mc_list_lock);
1855 in_dev_put(in4_dev);
1856 }
1857
1858 #ifdef CONFIG_QETH_IPV6
1859 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1860 {
1861 struct qeth_ipaddr *ipm;
1862 struct ifmcaddr6 *im6;
1863 char buf[MAX_ADDR_LEN];
1864
1865 QETH_DBF_TEXT(TRACE, 4, "addmc6");
1866 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1867 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1868 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1869 if (!ipm)
1870 continue;
1871 ipm->is_multicast = 1;
1872 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1873 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1874 sizeof(struct in6_addr));
1875 if (!qeth_l3_add_ip(card, ipm))
1876 kfree(ipm);
1877 }
1878 }
1879
1880 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1881 {
1882 struct inet6_dev *in_dev;
1883 struct vlan_group *vg;
1884 int i;
1885
1886 QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1887 if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1888 return;
1889
1890 vg = card->vlangrp;
1891 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1892 struct net_device *netdev = vlan_group_get_device(vg, i);
1893 if (netdev == NULL ||
1894 !(netdev->flags & IFF_UP))
1895 continue;
1896 in_dev = in6_dev_get(netdev);
1897 if (!in_dev)
1898 continue;
1899 read_lock_bh(&in_dev->lock);
1900 qeth_l3_add_mc6(card, in_dev);
1901 read_unlock_bh(&in_dev->lock);
1902 in6_dev_put(in_dev);
1903 }
1904 }
1905
1906 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1907 {
1908 struct inet6_dev *in6_dev;
1909
1910 QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1911 if (!qeth_is_supported(card, IPA_IPV6))
1912 return ;
1913 in6_dev = in6_dev_get(card->dev);
1914 if (in6_dev == NULL)
1915 return;
1916 read_lock_bh(&in6_dev->lock);
1917 qeth_l3_add_mc6(card, in6_dev);
1918 qeth_l3_add_vlan_mc6(card);
1919 read_unlock_bh(&in6_dev->lock);
1920 in6_dev_put(in6_dev);
1921 }
1922 #endif /* CONFIG_QETH_IPV6 */
1923
1924 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1925 unsigned short vid)
1926 {
1927 struct in_device *in_dev;
1928 struct in_ifaddr *ifa;
1929 struct qeth_ipaddr *addr;
1930
1931 QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1932
1933 in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1934 if (!in_dev)
1935 return;
1936 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1937 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1938 if (addr) {
1939 addr->u.a4.addr = ifa->ifa_address;
1940 addr->u.a4.mask = ifa->ifa_mask;
1941 addr->type = QETH_IP_TYPE_NORMAL;
1942 if (!qeth_l3_delete_ip(card, addr))
1943 kfree(addr);
1944 }
1945 }
1946 in_dev_put(in_dev);
1947 }
1948
1949 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1950 unsigned short vid)
1951 {
1952 #ifdef CONFIG_QETH_IPV6
1953 struct inet6_dev *in6_dev;
1954 struct inet6_ifaddr *ifa;
1955 struct qeth_ipaddr *addr;
1956
1957 QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1958
1959 in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1960 if (!in6_dev)
1961 return;
1962 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1963 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1964 if (addr) {
1965 memcpy(&addr->u.a6.addr, &ifa->addr,
1966 sizeof(struct in6_addr));
1967 addr->u.a6.pfxlen = ifa->prefix_len;
1968 addr->type = QETH_IP_TYPE_NORMAL;
1969 if (!qeth_l3_delete_ip(card, addr))
1970 kfree(addr);
1971 }
1972 }
1973 in6_dev_put(in6_dev);
1974 #endif /* CONFIG_QETH_IPV6 */
1975 }
1976
1977 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1978 unsigned short vid)
1979 {
1980 if (!card->vlangrp)
1981 return;
1982 qeth_l3_free_vlan_addresses4(card, vid);
1983 qeth_l3_free_vlan_addresses6(card, vid);
1984 }
1985
1986 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1987 struct vlan_group *grp)
1988 {
1989 struct qeth_card *card = dev->ml_priv;
1990 unsigned long flags;
1991
1992 QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1993 spin_lock_irqsave(&card->vlanlock, flags);
1994 card->vlangrp = grp;
1995 spin_unlock_irqrestore(&card->vlanlock, flags);
1996 }
1997
1998 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1999 {
2000 return;
2001 }
2002
2003 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2004 {
2005 struct qeth_card *card = dev->ml_priv;
2006 unsigned long flags;
2007
2008 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
2009 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2010 QETH_DBF_TEXT(TRACE, 3, "kidREC");
2011 return;
2012 }
2013 spin_lock_irqsave(&card->vlanlock, flags);
2014 /* unregister IP addresses of vlan device */
2015 qeth_l3_free_vlan_addresses(card, vid);
2016 vlan_group_set_device(card->vlangrp, vid, NULL);
2017 spin_unlock_irqrestore(&card->vlanlock, flags);
2018 qeth_l3_set_multicast_list(card->dev);
2019 }
2020
2021 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
2022 struct sk_buff *skb, struct qeth_hdr *hdr)
2023 {
2024 unsigned short vlan_id = 0;
2025 __be16 prot;
2026 struct iphdr *ip_hdr;
2027 unsigned char tg_addr[MAX_ADDR_LEN];
2028
2029 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
2030 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
2031 ETH_P_IP);
2032 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
2033 case QETH_CAST_MULTICAST:
2034 switch (prot) {
2035 #ifdef CONFIG_QETH_IPV6
2036 case __constant_htons(ETH_P_IPV6):
2037 ndisc_mc_map((struct in6_addr *)
2038 skb->data + 24,
2039 tg_addr, card->dev, 0);
2040 break;
2041 #endif
2042 case __constant_htons(ETH_P_IP):
2043 ip_hdr = (struct iphdr *)skb->data;
2044 (card->dev->type == ARPHRD_IEEE802_TR) ?
2045 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
2046 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
2047 break;
2048 default:
2049 memcpy(tg_addr, card->dev->broadcast,
2050 card->dev->addr_len);
2051 }
2052 card->stats.multicast++;
2053 skb->pkt_type = PACKET_MULTICAST;
2054 break;
2055 case QETH_CAST_BROADCAST:
2056 memcpy(tg_addr, card->dev->broadcast,
2057 card->dev->addr_len);
2058 card->stats.multicast++;
2059 skb->pkt_type = PACKET_BROADCAST;
2060 break;
2061 case QETH_CAST_UNICAST:
2062 case QETH_CAST_ANYCAST:
2063 case QETH_CAST_NOCAST:
2064 default:
2065 if (card->options.sniffer)
2066 skb->pkt_type = PACKET_OTHERHOST;
2067 else
2068 skb->pkt_type = PACKET_HOST;
2069 memcpy(tg_addr, card->dev->dev_addr,
2070 card->dev->addr_len);
2071 }
2072 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
2073 card->dev->header_ops->create(skb, card->dev, prot,
2074 tg_addr, &hdr->hdr.l3.dest_addr[2],
2075 card->dev->addr_len);
2076 else
2077 card->dev->header_ops->create(skb, card->dev, prot,
2078 tg_addr, "FAKELL", card->dev->addr_len);
2079 }
2080
2081 #ifdef CONFIG_TR
2082 if (card->dev->type == ARPHRD_IEEE802_TR)
2083 skb->protocol = tr_type_trans(skb, card->dev);
2084 else
2085 #endif
2086 skb->protocol = eth_type_trans(skb, card->dev);
2087
2088 if (hdr->hdr.l3.ext_flags &
2089 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
2090 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
2091 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
2092 }
2093
2094 switch (card->options.checksum_type) {
2095 case SW_CHECKSUMMING:
2096 skb->ip_summed = CHECKSUM_NONE;
2097 break;
2098 case NO_CHECKSUMMING:
2099 skb->ip_summed = CHECKSUM_UNNECESSARY;
2100 break;
2101 case HW_CHECKSUMMING:
2102 if ((hdr->hdr.l3.ext_flags &
2103 (QETH_HDR_EXT_CSUM_HDR_REQ |
2104 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
2105 (QETH_HDR_EXT_CSUM_HDR_REQ |
2106 QETH_HDR_EXT_CSUM_TRANSP_REQ))
2107 skb->ip_summed = CHECKSUM_UNNECESSARY;
2108 else
2109 skb->ip_summed = CHECKSUM_NONE;
2110 }
2111
2112 return vlan_id;
2113 }
2114
2115 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
2116 struct qeth_qdio_buffer *buf, int index)
2117 {
2118 struct qdio_buffer_element *element;
2119 struct sk_buff *skb;
2120 struct qeth_hdr *hdr;
2121 int offset;
2122 __u16 vlan_tag = 0;
2123 unsigned int len;
2124 /* get first element of current buffer */
2125 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
2126 offset = 0;
2127 if (card->options.performance_stats)
2128 card->perf_stats.bufs_rec++;
2129 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
2130 &offset, &hdr))) {
2131 skb->dev = card->dev;
2132 /* is device UP ? */
2133 if (!(card->dev->flags & IFF_UP)) {
2134 dev_kfree_skb_any(skb);
2135 continue;
2136 }
2137
2138 switch (hdr->hdr.l3.id) {
2139 case QETH_HEADER_TYPE_LAYER3:
2140 vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
2141 len = skb->len;
2142 if (vlan_tag && !card->options.sniffer)
2143 if (card->vlangrp)
2144 vlan_hwaccel_rx(skb, card->vlangrp,
2145 vlan_tag);
2146 else {
2147 dev_kfree_skb_any(skb);
2148 continue;
2149 }
2150 else
2151 netif_rx(skb);
2152 break;
2153 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2154 skb->pkt_type = PACKET_HOST;
2155 skb->protocol = eth_type_trans(skb, skb->dev);
2156 if (card->options.checksum_type == NO_CHECKSUMMING)
2157 skb->ip_summed = CHECKSUM_UNNECESSARY;
2158 else
2159 skb->ip_summed = CHECKSUM_NONE;
2160 len = skb->len;
2161 netif_receive_skb(skb);
2162 break;
2163 default:
2164 dev_kfree_skb_any(skb);
2165 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
2166 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2167 continue;
2168 }
2169
2170 card->stats.rx_packets++;
2171 card->stats.rx_bytes += len;
2172 }
2173 }
2174
2175 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2176 struct qeth_card *card)
2177 {
2178 int rc = 0;
2179 struct vlan_group *vg;
2180 int i;
2181
2182 vg = card->vlangrp;
2183 if (!vg)
2184 return rc;
2185
2186 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2187 if (vlan_group_get_device(vg, i) == dev) {
2188 rc = QETH_VLAN_CARD;
2189 break;
2190 }
2191 }
2192
2193 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2194 return 0;
2195
2196 return rc;
2197 }
2198
2199 static int qeth_l3_verify_dev(struct net_device *dev)
2200 {
2201 struct qeth_card *card;
2202 unsigned long flags;
2203 int rc = 0;
2204
2205 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2206 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2207 if (card->dev == dev) {
2208 rc = QETH_REAL_CARD;
2209 break;
2210 }
2211 rc = qeth_l3_verify_vlan_dev(dev, card);
2212 if (rc)
2213 break;
2214 }
2215 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2216
2217 return rc;
2218 }
2219
2220 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2221 {
2222 struct qeth_card *card = NULL;
2223 int rc;
2224
2225 rc = qeth_l3_verify_dev(dev);
2226 if (rc == QETH_REAL_CARD)
2227 card = dev->ml_priv;
2228 else if (rc == QETH_VLAN_CARD)
2229 card = vlan_dev_real_dev(dev)->ml_priv;
2230 if (card && card->options.layer2)
2231 card = NULL;
2232 QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2233 return card ;
2234 }
2235
2236 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2237 {
2238 int rc = 0;
2239
2240 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2241 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2242
2243 qeth_set_allowed_threads(card, 0, 1);
2244 if (card->options.sniffer &&
2245 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2246 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2247 if (card->read.state == CH_STATE_UP &&
2248 card->write.state == CH_STATE_UP &&
2249 (card->state == CARD_STATE_UP)) {
2250 if (recovery_mode)
2251 qeth_l3_stop(card->dev);
2252 else {
2253 rtnl_lock();
2254 dev_close(card->dev);
2255 rtnl_unlock();
2256 }
2257 if (!card->use_hard_stop) {
2258 rc = qeth_send_stoplan(card);
2259 if (rc)
2260 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2261 }
2262 card->state = CARD_STATE_SOFTSETUP;
2263 }
2264 if (card->state == CARD_STATE_SOFTSETUP) {
2265 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2266 qeth_clear_ipacmd_list(card);
2267 card->state = CARD_STATE_HARDSETUP;
2268 }
2269 if (card->state == CARD_STATE_HARDSETUP) {
2270 if (!card->use_hard_stop &&
2271 (card->info.type != QETH_CARD_TYPE_IQD)) {
2272 rc = qeth_l3_put_unique_id(card);
2273 if (rc)
2274 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2275 }
2276 qeth_qdio_clear_card(card, 0);
2277 qeth_clear_qdio_buffers(card);
2278 qeth_clear_working_pool_list(card);
2279 card->state = CARD_STATE_DOWN;
2280 }
2281 if (card->state == CARD_STATE_DOWN) {
2282 qeth_clear_cmd_buffers(&card->read);
2283 qeth_clear_cmd_buffers(&card->write);
2284 }
2285 card->use_hard_stop = 0;
2286 return rc;
2287 }
2288
2289 /*
2290 * test for and Switch promiscuous mode (on or off)
2291 * either for guestlan or HiperSocket Sniffer
2292 */
2293 static void
2294 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2295 {
2296 struct net_device *dev = card->dev;
2297
2298 if (((dev->flags & IFF_PROMISC) &&
2299 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2300 (!(dev->flags & IFF_PROMISC) &&
2301 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2302 return;
2303
2304 if (card->info.guestlan) { /* Guestlan trace */
2305 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2306 qeth_setadp_promisc_mode(card);
2307 } else if (card->options.sniffer && /* HiperSockets trace */
2308 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2309 if (dev->flags & IFF_PROMISC) {
2310 QETH_DBF_TEXT(TRACE, 3, "+promisc");
2311 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2312 } else {
2313 QETH_DBF_TEXT(TRACE, 3, "-promisc");
2314 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2315 }
2316 }
2317 }
2318
2319 static void qeth_l3_set_multicast_list(struct net_device *dev)
2320 {
2321 struct qeth_card *card = dev->ml_priv;
2322
2323 QETH_DBF_TEXT(TRACE, 3, "setmulti");
2324 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2325 (card->state != CARD_STATE_UP))
2326 return;
2327 if (!card->options.sniffer) {
2328 qeth_l3_delete_mc_addresses(card);
2329 qeth_l3_add_multicast_ipv4(card);
2330 #ifdef CONFIG_QETH_IPV6
2331 qeth_l3_add_multicast_ipv6(card);
2332 #endif
2333 qeth_l3_set_ip_addr_list(card);
2334 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2335 return;
2336 }
2337 qeth_l3_handle_promisc_mode(card);
2338 }
2339
2340 static const char *qeth_l3_arp_get_error_cause(int *rc)
2341 {
2342 switch (*rc) {
2343 case QETH_IPA_ARP_RC_FAILED:
2344 *rc = -EIO;
2345 return "operation failed";
2346 case QETH_IPA_ARP_RC_NOTSUPP:
2347 *rc = -EOPNOTSUPP;
2348 return "operation not supported";
2349 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2350 *rc = -EINVAL;
2351 return "argument out of range";
2352 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2353 *rc = -EOPNOTSUPP;
2354 return "query operation not supported";
2355 case QETH_IPA_ARP_RC_Q_NO_DATA:
2356 *rc = -ENOENT;
2357 return "no query data available";
2358 default:
2359 return "unknown error";
2360 }
2361 }
2362
2363 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2364 {
2365 int tmp;
2366 int rc;
2367
2368 QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2369
2370 /*
2371 * currently GuestLAN only supports the ARP assist function
2372 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
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 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2381 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2382 no_entries);
2383 if (rc) {
2384 tmp = rc;
2385 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2386 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2387 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2388 }
2389 return rc;
2390 }
2391
2392 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2393 struct qeth_arp_query_data *qdata, int entry_size,
2394 int uentry_size)
2395 {
2396 char *entry_ptr;
2397 char *uentry_ptr;
2398 int i;
2399
2400 entry_ptr = (char *)&qdata->data;
2401 uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2402 for (i = 0; i < qdata->no_entries; ++i) {
2403 /* strip off 32 bytes "media specific information" */
2404 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2405 entry_ptr += entry_size;
2406 uentry_ptr += uentry_size;
2407 }
2408 }
2409
2410 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2411 struct qeth_reply *reply, unsigned long data)
2412 {
2413 struct qeth_ipa_cmd *cmd;
2414 struct qeth_arp_query_data *qdata;
2415 struct qeth_arp_query_info *qinfo;
2416 int entry_size;
2417 int uentry_size;
2418 int i;
2419
2420 QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2421
2422 qinfo = (struct qeth_arp_query_info *) reply->param;
2423 cmd = (struct qeth_ipa_cmd *) data;
2424 if (cmd->hdr.return_code) {
2425 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2426 return 0;
2427 }
2428 if (cmd->data.setassparms.hdr.return_code) {
2429 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2430 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2431 return 0;
2432 }
2433 qdata = &cmd->data.setassparms.data.query_arp;
2434 switch (qdata->reply_bits) {
2435 case 5:
2436 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2437 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2438 uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2439 break;
2440 case 7:
2441 /* fall through to default */
2442 default:
2443 /* tr is the same as eth -> entry7 */
2444 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2445 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2446 uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2447 break;
2448 }
2449 /* check if there is enough room in userspace */
2450 if ((qinfo->udata_len - qinfo->udata_offset) <
2451 qdata->no_entries * uentry_size){
2452 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2453 cmd->hdr.return_code = -ENOMEM;
2454 goto out_error;
2455 }
2456 QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2457 cmd->data.setassparms.hdr.number_of_replies);
2458 QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2459 QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2460
2461 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2462 /* strip off "media specific information" */
2463 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2464 uentry_size);
2465 } else
2466 /*copy entries to user buffer*/
2467 memcpy(qinfo->udata + qinfo->udata_offset,
2468 (char *)&qdata->data, qdata->no_entries*uentry_size);
2469
2470 qinfo->no_entries += qdata->no_entries;
2471 qinfo->udata_offset += (qdata->no_entries*uentry_size);
2472 /* check if all replies received ... */
2473 if (cmd->data.setassparms.hdr.seq_no <
2474 cmd->data.setassparms.hdr.number_of_replies)
2475 return 1;
2476 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2477 /* keep STRIP_ENTRIES flag so the user program can distinguish
2478 * stripped entries from normal ones */
2479 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2480 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2481 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2482 return 0;
2483 out_error:
2484 i = 0;
2485 memcpy(qinfo->udata, &i, 4);
2486 return 0;
2487 }
2488
2489 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2490 struct qeth_cmd_buffer *iob, int len,
2491 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2492 unsigned long),
2493 void *reply_param)
2494 {
2495 QETH_DBF_TEXT(TRACE, 4, "sendarp");
2496
2497 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2498 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2499 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2500 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2501 reply_cb, reply_param);
2502 }
2503
2504 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2505 {
2506 struct qeth_cmd_buffer *iob;
2507 struct qeth_arp_query_info qinfo = {0, };
2508 int tmp;
2509 int rc;
2510
2511 QETH_DBF_TEXT(TRACE, 3, "arpquery");
2512
2513 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2514 IPA_ARP_PROCESSING)) {
2515 return -EOPNOTSUPP;
2516 }
2517 /* get size of userspace buffer and mask_bits -> 6 bytes */
2518 if (copy_from_user(&qinfo, udata, 6))
2519 return -EFAULT;
2520 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2521 if (!qinfo.udata)
2522 return -ENOMEM;
2523 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2524 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2525 IPA_CMD_ASS_ARP_QUERY_INFO,
2526 sizeof(int), QETH_PROT_IPV4);
2527
2528 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2529 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2530 qeth_l3_arp_query_cb, (void *)&qinfo);
2531 if (rc) {
2532 tmp = rc;
2533 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2534 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2535 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2536 if (copy_to_user(udata, qinfo.udata, 4))
2537 rc = -EFAULT;
2538 } else {
2539 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2540 rc = -EFAULT;
2541 }
2542 kfree(qinfo.udata);
2543 return rc;
2544 }
2545
2546 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2547 struct qeth_arp_cache_entry *entry)
2548 {
2549 struct qeth_cmd_buffer *iob;
2550 char buf[16];
2551 int tmp;
2552 int rc;
2553
2554 QETH_DBF_TEXT(TRACE, 3, "arpadent");
2555
2556 /*
2557 * currently GuestLAN only supports the ARP assist function
2558 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2559 * thus we say EOPNOTSUPP for this ARP function
2560 */
2561 if (card->info.guestlan)
2562 return -EOPNOTSUPP;
2563 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2564 return -EOPNOTSUPP;
2565 }
2566
2567 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2568 IPA_CMD_ASS_ARP_ADD_ENTRY,
2569 sizeof(struct qeth_arp_cache_entry),
2570 QETH_PROT_IPV4);
2571 rc = qeth_l3_send_setassparms(card, iob,
2572 sizeof(struct qeth_arp_cache_entry),
2573 (unsigned long) entry,
2574 qeth_l3_default_setassparms_cb, NULL);
2575 if (rc) {
2576 tmp = rc;
2577 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2578 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2579 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2580 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2581 }
2582 return rc;
2583 }
2584
2585 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2586 struct qeth_arp_cache_entry *entry)
2587 {
2588 struct qeth_cmd_buffer *iob;
2589 char buf[16] = {0, };
2590 int tmp;
2591 int rc;
2592
2593 QETH_DBF_TEXT(TRACE, 3, "arprment");
2594
2595 /*
2596 * currently GuestLAN only supports the ARP assist function
2597 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2598 * thus we say EOPNOTSUPP for this ARP function
2599 */
2600 if (card->info.guestlan)
2601 return -EOPNOTSUPP;
2602 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2603 return -EOPNOTSUPP;
2604 }
2605 memcpy(buf, entry, 12);
2606 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2607 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2608 12,
2609 QETH_PROT_IPV4);
2610 rc = qeth_l3_send_setassparms(card, iob,
2611 12, (unsigned long)buf,
2612 qeth_l3_default_setassparms_cb, NULL);
2613 if (rc) {
2614 tmp = rc;
2615 memset(buf, 0, 16);
2616 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2617 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2618 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2619 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2620 }
2621 return rc;
2622 }
2623
2624 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2625 {
2626 int rc;
2627 int tmp;
2628
2629 QETH_DBF_TEXT(TRACE, 3, "arpflush");
2630
2631 /*
2632 * currently GuestLAN only supports the ARP assist function
2633 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2634 * thus we say EOPNOTSUPP for this ARP function
2635 */
2636 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2637 return -EOPNOTSUPP;
2638 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2639 return -EOPNOTSUPP;
2640 }
2641 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2642 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2643 if (rc) {
2644 tmp = rc;
2645 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2646 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2647 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2648 }
2649 return rc;
2650 }
2651
2652 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2653 {
2654 struct qeth_card *card = dev->ml_priv;
2655 struct qeth_arp_cache_entry arp_entry;
2656 struct mii_ioctl_data *mii_data;
2657 int rc = 0;
2658
2659 if (!card)
2660 return -ENODEV;
2661
2662 if ((card->state != CARD_STATE_UP) &&
2663 (card->state != CARD_STATE_SOFTSETUP))
2664 return -ENODEV;
2665
2666 switch (cmd) {
2667 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2668 if (!capable(CAP_NET_ADMIN)) {
2669 rc = -EPERM;
2670 break;
2671 }
2672 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2673 break;
2674 case SIOC_QETH_ARP_QUERY_INFO:
2675 if (!capable(CAP_NET_ADMIN)) {
2676 rc = -EPERM;
2677 break;
2678 }
2679 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2680 break;
2681 case SIOC_QETH_ARP_ADD_ENTRY:
2682 if (!capable(CAP_NET_ADMIN)) {
2683 rc = -EPERM;
2684 break;
2685 }
2686 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2687 sizeof(struct qeth_arp_cache_entry)))
2688 rc = -EFAULT;
2689 else
2690 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2691 break;
2692 case SIOC_QETH_ARP_REMOVE_ENTRY:
2693 if (!capable(CAP_NET_ADMIN)) {
2694 rc = -EPERM;
2695 break;
2696 }
2697 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2698 sizeof(struct qeth_arp_cache_entry)))
2699 rc = -EFAULT;
2700 else
2701 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2702 break;
2703 case SIOC_QETH_ARP_FLUSH_CACHE:
2704 if (!capable(CAP_NET_ADMIN)) {
2705 rc = -EPERM;
2706 break;
2707 }
2708 rc = qeth_l3_arp_flush_cache(card);
2709 break;
2710 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2711 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2712 break;
2713 case SIOC_QETH_GET_CARD_TYPE:
2714 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2715 !card->info.guestlan)
2716 return 1;
2717 return 0;
2718 break;
2719 case SIOCGMIIPHY:
2720 mii_data = if_mii(rq);
2721 mii_data->phy_id = 0;
2722 break;
2723 case SIOCGMIIREG:
2724 mii_data = if_mii(rq);
2725 if (mii_data->phy_id != 0)
2726 rc = -EINVAL;
2727 else
2728 mii_data->val_out = qeth_mdio_read(dev,
2729 mii_data->phy_id,
2730 mii_data->reg_num);
2731 break;
2732 default:
2733 rc = -EOPNOTSUPP;
2734 }
2735 if (rc)
2736 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2737 return rc;
2738 }
2739
2740 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2741 {
2742 int cast_type = RTN_UNSPEC;
2743
2744 if (skb_dst(skb) && skb_dst(skb)->neighbour) {
2745 cast_type = skb_dst(skb)->neighbour->type;
2746 if ((cast_type == RTN_BROADCAST) ||
2747 (cast_type == RTN_MULTICAST) ||
2748 (cast_type == RTN_ANYCAST))
2749 return cast_type;
2750 else
2751 return RTN_UNSPEC;
2752 }
2753 /* try something else */
2754 if (skb->protocol == ETH_P_IPV6)
2755 return (skb_network_header(skb)[24] == 0xff) ?
2756 RTN_MULTICAST : 0;
2757 else if (skb->protocol == ETH_P_IP)
2758 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2759 RTN_MULTICAST : 0;
2760 /* ... */
2761 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2762 return RTN_BROADCAST;
2763 else {
2764 u16 hdr_mac;
2765
2766 hdr_mac = *((u16 *)skb->data);
2767 /* tr multicast? */
2768 switch (card->info.link_type) {
2769 case QETH_LINK_TYPE_HSTR:
2770 case QETH_LINK_TYPE_LANE_TR:
2771 if ((hdr_mac == QETH_TR_MAC_NC) ||
2772 (hdr_mac == QETH_TR_MAC_C))
2773 return RTN_MULTICAST;
2774 break;
2775 /* eth or so multicast? */
2776 default:
2777 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2778 (hdr_mac == QETH_ETH_MAC_V6))
2779 return RTN_MULTICAST;
2780 }
2781 }
2782 return cast_type;
2783 }
2784
2785 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2786 struct sk_buff *skb, int ipv, int cast_type)
2787 {
2788 memset(hdr, 0, sizeof(struct qeth_hdr));
2789 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2790 hdr->hdr.l3.ext_flags = 0;
2791
2792 /*
2793 * before we're going to overwrite this location with next hop ip.
2794 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2795 */
2796 if (card->vlangrp && vlan_tx_tag_present(skb)) {
2797 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2798 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2799 else
2800 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2801 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2802 }
2803
2804 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2805 if (ipv == 4) {
2806 /* IPv4 */
2807 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2808 memset(hdr->hdr.l3.dest_addr, 0, 12);
2809 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2810 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2811 *((u32 *) skb_dst(skb)->neighbour->primary_key);
2812 } else {
2813 /* fill in destination address used in ip header */
2814 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2815 ip_hdr(skb)->daddr;
2816 }
2817 } else if (ipv == 6) {
2818 /* IPv6 */
2819 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2820 if (card->info.type == QETH_CARD_TYPE_IQD)
2821 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2822 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2823 memcpy(hdr->hdr.l3.dest_addr,
2824 skb_dst(skb)->neighbour->primary_key, 16);
2825 } else {
2826 /* fill in destination address used in ip header */
2827 memcpy(hdr->hdr.l3.dest_addr,
2828 &ipv6_hdr(skb)->daddr, 16);
2829 }
2830 } else {
2831 /* passthrough */
2832 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2833 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2834 sizeof(__u16), skb->dev->broadcast, 6)) {
2835 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2836 QETH_HDR_PASSTHRU;
2837 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2838 skb->dev->broadcast, 6)) {
2839 /* broadcast? */
2840 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2841 QETH_HDR_PASSTHRU;
2842 } else {
2843 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2844 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2845 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2846 }
2847 }
2848 }
2849
2850 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2851 struct qeth_hdr *hdr, struct sk_buff *skb)
2852 {
2853 struct iphdr *iph = ip_hdr(skb);
2854
2855 /* tcph->check contains already the pseudo hdr checksum
2856 * so just set the header flags
2857 */
2858 if (iph->protocol == IPPROTO_UDP)
2859 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2860 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
2861 if (card->options.performance_stats)
2862 card->perf_stats.tx_csum++;
2863 }
2864
2865 static void qeth_tso_fill_header(struct qeth_card *card,
2866 struct qeth_hdr *qhdr, struct sk_buff *skb)
2867 {
2868 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2869 struct tcphdr *tcph = tcp_hdr(skb);
2870 struct iphdr *iph = ip_hdr(skb);
2871 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2872
2873 /*fix header to TSO values ...*/
2874 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2875 /*set values which are fix for the first approach ...*/
2876 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2877 hdr->ext.imb_hdr_no = 1;
2878 hdr->ext.hdr_type = 1;
2879 hdr->ext.hdr_version = 1;
2880 hdr->ext.hdr_len = 28;
2881 /*insert non-fix values */
2882 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2883 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2884 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2885 sizeof(struct qeth_hdr_tso));
2886 tcph->check = 0;
2887 if (skb->protocol == ETH_P_IPV6) {
2888 ip6h->payload_len = 0;
2889 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2890 0, IPPROTO_TCP, 0);
2891 } else {
2892 /*OSA want us to set these values ...*/
2893 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2894 0, IPPROTO_TCP, 0);
2895 iph->tot_len = 0;
2896 iph->check = 0;
2897 }
2898 }
2899
2900 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2901 {
2902 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2903 tcp_hdr(skb)->doff * 4;
2904 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2905 int elements = PFN_UP(tcpd + tcpd_len) - PFN_DOWN(tcpd);
2906 elements += skb_shinfo(skb)->nr_frags;
2907 return elements;
2908 }
2909
2910 static inline int qeth_l3_tso_check(struct sk_buff *skb)
2911 {
2912 int len = ((unsigned long)tcp_hdr(skb) + tcp_hdr(skb)->doff * 4) -
2913 (unsigned long)skb->data;
2914 return (((unsigned long)skb->data & PAGE_MASK) !=
2915 (((unsigned long)skb->data + len) & PAGE_MASK));
2916 }
2917
2918 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2919 {
2920 int rc;
2921 u16 *tag;
2922 struct qeth_hdr *hdr = NULL;
2923 int elements_needed = 0;
2924 int elems;
2925 struct qeth_card *card = dev->ml_priv;
2926 struct sk_buff *new_skb = NULL;
2927 int ipv = qeth_get_ip_version(skb);
2928 int cast_type = qeth_l3_get_cast_type(card, skb);
2929 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2930 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2931 int tx_bytes = skb->len;
2932 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2933 int data_offset = -1;
2934 int nr_frags;
2935
2936 if (((card->info.type == QETH_CARD_TYPE_IQD) && (!ipv)) ||
2937 card->options.sniffer)
2938 goto tx_drop;
2939
2940 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2941 card->stats.tx_carrier_errors++;
2942 goto tx_drop;
2943 }
2944
2945 if ((cast_type == RTN_BROADCAST) &&
2946 (card->info.broadcast_capable == 0))
2947 goto tx_drop;
2948
2949 if (card->options.performance_stats) {
2950 card->perf_stats.outbound_cnt++;
2951 card->perf_stats.outbound_start_time = qeth_get_micros();
2952 }
2953
2954 if (skb_is_gso(skb))
2955 large_send = card->options.large_send;
2956
2957 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2958 (skb_shinfo(skb)->nr_frags == 0)) {
2959 new_skb = skb;
2960 data_offset = ETH_HLEN;
2961 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2962 if (!hdr)
2963 goto tx_drop;
2964 elements_needed++;
2965 } else {
2966 /* create a clone with writeable headroom */
2967 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2968 + VLAN_HLEN);
2969 if (!new_skb)
2970 goto tx_drop;
2971 }
2972
2973 if (card->info.type == QETH_CARD_TYPE_IQD) {
2974 if (data_offset < 0)
2975 skb_pull(new_skb, ETH_HLEN);
2976 } else {
2977 if (ipv == 4) {
2978 if (card->dev->type == ARPHRD_IEEE802_TR)
2979 skb_pull(new_skb, TR_HLEN);
2980 else
2981 skb_pull(new_skb, ETH_HLEN);
2982 }
2983
2984 if (ipv == 6 && card->vlangrp &&
2985 vlan_tx_tag_present(new_skb)) {
2986 skb_push(new_skb, VLAN_HLEN);
2987 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2988 skb_copy_to_linear_data_offset(new_skb, 4,
2989 new_skb->data + 8, 4);
2990 skb_copy_to_linear_data_offset(new_skb, 8,
2991 new_skb->data + 12, 4);
2992 tag = (u16 *)(new_skb->data + 12);
2993 *tag = __constant_htons(ETH_P_8021Q);
2994 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2995 new_skb->vlan_tci = 0;
2996 }
2997 }
2998
2999 netif_stop_queue(dev);
3000
3001 /* fix hardware limitation: as long as we do not have sbal
3002 * chaining we can not send long frag lists
3003 */
3004 if (large_send == QETH_LARGE_SEND_TSO) {
3005 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3006 if (skb_linearize(new_skb))
3007 goto tx_drop;
3008 if (card->options.performance_stats)
3009 card->perf_stats.tx_lin++;
3010 }
3011 }
3012
3013 if ((large_send == QETH_LARGE_SEND_TSO) &&
3014 (cast_type == RTN_UNSPEC)) {
3015 hdr = (struct qeth_hdr *)skb_push(new_skb,
3016 sizeof(struct qeth_hdr_tso));
3017 if (qeth_l3_tso_check(new_skb))
3018 QETH_DBF_MESSAGE(2, "tso skb misaligned\n");
3019 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3020 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3021 qeth_tso_fill_header(card, hdr, new_skb);
3022 elements_needed++;
3023 } else {
3024 if (data_offset < 0) {
3025 hdr = (struct qeth_hdr *)skb_push(new_skb,
3026 sizeof(struct qeth_hdr));
3027 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3028 cast_type);
3029 } else {
3030 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3031 cast_type);
3032 hdr->hdr.l3.length = new_skb->len - data_offset;
3033 }
3034
3035 if (skb->ip_summed == CHECKSUM_PARTIAL)
3036 qeth_l3_hdr_csum(card, hdr, new_skb);
3037 }
3038
3039 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3040 elements_needed);
3041 if (!elems) {
3042 if (data_offset >= 0)
3043 kmem_cache_free(qeth_core_header_cache, hdr);
3044 goto tx_drop;
3045 }
3046 elements_needed += elems;
3047 nr_frags = skb_shinfo(new_skb)->nr_frags;
3048
3049 if (card->info.type != QETH_CARD_TYPE_IQD)
3050 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3051 elements_needed);
3052 else
3053 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3054 elements_needed, data_offset, 0);
3055
3056 if (!rc) {
3057 card->stats.tx_packets++;
3058 card->stats.tx_bytes += tx_bytes;
3059 if (new_skb != skb)
3060 dev_kfree_skb_any(skb);
3061 if (card->options.performance_stats) {
3062 if (large_send != QETH_LARGE_SEND_NO) {
3063 card->perf_stats.large_send_bytes += tx_bytes;
3064 card->perf_stats.large_send_cnt++;
3065 }
3066 if (nr_frags) {
3067 card->perf_stats.sg_skbs_sent++;
3068 /* nr_frags + skb->data */
3069 card->perf_stats.sg_frags_sent += nr_frags + 1;
3070 }
3071 }
3072 rc = NETDEV_TX_OK;
3073 } else {
3074 if (data_offset >= 0)
3075 kmem_cache_free(qeth_core_header_cache, hdr);
3076
3077 if (rc == -EBUSY) {
3078 if (new_skb != skb)
3079 dev_kfree_skb_any(new_skb);
3080 return NETDEV_TX_BUSY;
3081 } else
3082 goto tx_drop;
3083 }
3084
3085 netif_wake_queue(dev);
3086 if (card->options.performance_stats)
3087 card->perf_stats.outbound_time += qeth_get_micros() -
3088 card->perf_stats.outbound_start_time;
3089 return rc;
3090
3091 tx_drop:
3092 card->stats.tx_dropped++;
3093 card->stats.tx_errors++;
3094 if ((new_skb != skb) && new_skb)
3095 dev_kfree_skb_any(new_skb);
3096 dev_kfree_skb_any(skb);
3097 netif_wake_queue(dev);
3098 return NETDEV_TX_OK;
3099 }
3100
3101 static int qeth_l3_open(struct net_device *dev)
3102 {
3103 struct qeth_card *card = dev->ml_priv;
3104
3105 QETH_DBF_TEXT(TRACE, 4, "qethopen");
3106 if (card->state != CARD_STATE_SOFTSETUP)
3107 return -ENODEV;
3108 card->data.state = CH_STATE_UP;
3109 card->state = CARD_STATE_UP;
3110 netif_start_queue(dev);
3111
3112 if (!card->lan_online && netif_carrier_ok(dev))
3113 netif_carrier_off(dev);
3114 return 0;
3115 }
3116
3117 static int qeth_l3_stop(struct net_device *dev)
3118 {
3119 struct qeth_card *card = dev->ml_priv;
3120
3121 QETH_DBF_TEXT(TRACE, 4, "qethstop");
3122 netif_tx_disable(dev);
3123 if (card->state == CARD_STATE_UP)
3124 card->state = CARD_STATE_SOFTSETUP;
3125 return 0;
3126 }
3127
3128 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
3129 {
3130 struct qeth_card *card = dev->ml_priv;
3131
3132 return (card->options.checksum_type == HW_CHECKSUMMING);
3133 }
3134
3135 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
3136 {
3137 struct qeth_card *card = dev->ml_priv;
3138 enum qeth_checksum_types csum_type;
3139
3140 if (data)
3141 csum_type = HW_CHECKSUMMING;
3142 else
3143 csum_type = SW_CHECKSUMMING;
3144
3145 return qeth_l3_set_rx_csum(card, csum_type);
3146 }
3147
3148 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
3149 {
3150 struct qeth_card *card = dev->ml_priv;
3151 int rc = 0;
3152
3153 if (data) {
3154 rc = qeth_l3_set_large_send(card, QETH_LARGE_SEND_TSO);
3155 } else {
3156 dev->features &= ~NETIF_F_TSO;
3157 card->options.large_send = QETH_LARGE_SEND_NO;
3158 }
3159 return rc;
3160 }
3161
3162 static int qeth_l3_ethtool_set_tx_csum(struct net_device *dev, u32 data)
3163 {
3164 struct qeth_card *card = dev->ml_priv;
3165
3166 if (data) {
3167 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3168 dev->features |= NETIF_F_IP_CSUM;
3169 else
3170 return -EPERM;
3171 } else
3172 dev->features &= ~NETIF_F_IP_CSUM;
3173
3174 return 0;
3175 }
3176
3177 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3178 .get_link = ethtool_op_get_link,
3179 .get_tx_csum = ethtool_op_get_tx_csum,
3180 .set_tx_csum = qeth_l3_ethtool_set_tx_csum,
3181 .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
3182 .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
3183 .get_sg = ethtool_op_get_sg,
3184 .set_sg = ethtool_op_set_sg,
3185 .get_tso = ethtool_op_get_tso,
3186 .set_tso = qeth_l3_ethtool_set_tso,
3187 .get_strings = qeth_core_get_strings,
3188 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3189 .get_sset_count = qeth_core_get_sset_count,
3190 .get_drvinfo = qeth_core_get_drvinfo,
3191 .get_settings = qeth_core_ethtool_get_settings,
3192 };
3193
3194 /*
3195 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3196 * NOARP on the netdevice is no option because it also turns off neighbor
3197 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3198 * arp resolution but we want the hard header (packet socket will work
3199 * e.g. tcpdump)
3200 */
3201 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3202 {
3203 n->nud_state = NUD_NOARP;
3204 memcpy(n->ha, "FAKELL", 6);
3205 n->output = n->ops->connected_output;
3206 return 0;
3207 }
3208
3209 static int
3210 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3211 {
3212 if (np->tbl->family == AF_INET)
3213 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3214
3215 return 0;
3216 }
3217
3218 static const struct net_device_ops qeth_l3_netdev_ops = {
3219 .ndo_open = qeth_l3_open,
3220 .ndo_stop = qeth_l3_stop,
3221 .ndo_get_stats = qeth_get_stats,
3222 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3223 .ndo_validate_addr = eth_validate_addr,
3224 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3225 .ndo_do_ioctl = qeth_l3_do_ioctl,
3226 .ndo_change_mtu = qeth_change_mtu,
3227 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3228 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3229 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3230 .ndo_tx_timeout = qeth_tx_timeout,
3231 };
3232
3233 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3234 .ndo_open = qeth_l3_open,
3235 .ndo_stop = qeth_l3_stop,
3236 .ndo_get_stats = qeth_get_stats,
3237 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3238 .ndo_validate_addr = eth_validate_addr,
3239 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3240 .ndo_do_ioctl = qeth_l3_do_ioctl,
3241 .ndo_change_mtu = qeth_change_mtu,
3242 .ndo_vlan_rx_register = qeth_l3_vlan_rx_register,
3243 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3244 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3245 .ndo_tx_timeout = qeth_tx_timeout,
3246 .ndo_neigh_setup = qeth_l3_neigh_setup,
3247 };
3248
3249 static int qeth_l3_setup_netdev(struct qeth_card *card)
3250 {
3251 if (card->info.type == QETH_CARD_TYPE_OSAE) {
3252 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3253 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3254 #ifdef CONFIG_TR
3255 card->dev = alloc_trdev(0);
3256 #endif
3257 if (!card->dev)
3258 return -ENODEV;
3259 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3260 } else {
3261 card->dev = alloc_etherdev(0);
3262 if (!card->dev)
3263 return -ENODEV;
3264 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3265
3266 /*IPv6 address autoconfiguration stuff*/
3267 qeth_l3_get_unique_id(card);
3268 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3269 card->dev->dev_id = card->info.unique_id &
3270 0xffff;
3271 }
3272 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3273 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3274 if (!card->dev)
3275 return -ENODEV;
3276 card->dev->flags |= IFF_NOARP;
3277 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3278 qeth_l3_iqd_read_initial_mac(card);
3279 } else
3280 return -ENODEV;
3281
3282 card->dev->ml_priv = card;
3283 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3284 card->dev->mtu = card->info.initial_mtu;
3285 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3286 card->dev->features |= NETIF_F_HW_VLAN_TX |
3287 NETIF_F_HW_VLAN_RX |
3288 NETIF_F_HW_VLAN_FILTER;
3289 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3290 card->dev->gso_max_size = 15 * PAGE_SIZE;
3291
3292 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3293 return register_netdev(card->dev);
3294 }
3295
3296 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
3297 unsigned int qdio_err, unsigned int queue, int first_element,
3298 int count, unsigned long card_ptr)
3299 {
3300 struct net_device *net_dev;
3301 struct qeth_card *card;
3302 struct qeth_qdio_buffer *buffer;
3303 int index;
3304 int i;
3305
3306 card = (struct qeth_card *) card_ptr;
3307 net_dev = card->dev;
3308 if (card->options.performance_stats) {
3309 card->perf_stats.inbound_cnt++;
3310 card->perf_stats.inbound_start_time = qeth_get_micros();
3311 }
3312 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3313 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
3314 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
3315 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
3316 first_element, count);
3317 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
3318 qeth_schedule_recovery(card);
3319 return;
3320 }
3321 for (i = first_element; i < (first_element + count); ++i) {
3322 index = i % QDIO_MAX_BUFFERS_PER_Q;
3323 buffer = &card->qdio.in_q->bufs[index];
3324 if (!(qdio_err &&
3325 qeth_check_qdio_errors(card, buffer->buffer,
3326 qdio_err, "qinerr")))
3327 qeth_l3_process_inbound_buffer(card, buffer, index);
3328 /* clear buffer and give back to hardware */
3329 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3330 qeth_queue_input_buffer(card, index);
3331 }
3332 if (card->options.performance_stats)
3333 card->perf_stats.inbound_time += qeth_get_micros() -
3334 card->perf_stats.inbound_start_time;
3335 }
3336
3337 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3338 {
3339 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3340
3341 qeth_l3_create_device_attributes(&gdev->dev);
3342 card->options.layer2 = 0;
3343 card->discipline.input_handler = (qdio_handler_t *)
3344 qeth_l3_qdio_input_handler;
3345 card->discipline.output_handler = (qdio_handler_t *)
3346 qeth_qdio_output_handler;
3347 card->discipline.recover = qeth_l3_recover;
3348 return 0;
3349 }
3350
3351 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3352 {
3353 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3354
3355 qeth_set_allowed_threads(card, 0, 1);
3356 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3357
3358 if (cgdev->state == CCWGROUP_ONLINE) {
3359 card->use_hard_stop = 1;
3360 qeth_l3_set_offline(cgdev);
3361 }
3362
3363 if (card->dev) {
3364 unregister_netdev(card->dev);
3365 card->dev = NULL;
3366 }
3367
3368 qeth_l3_remove_device_attributes(&cgdev->dev);
3369 qeth_l3_clear_ip_list(card, 0, 0);
3370 qeth_l3_clear_ipato_list(card);
3371 return;
3372 }
3373
3374 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3375 {
3376 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3377 int rc = 0;
3378 enum qeth_card_states recover_flag;
3379
3380 BUG_ON(!card);
3381 mutex_lock(&card->conf_mutex);
3382 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3383 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3384
3385 recover_flag = card->state;
3386 rc = qeth_core_hardsetup_card(card);
3387 if (rc) {
3388 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3389 rc = -ENODEV;
3390 goto out_remove;
3391 }
3392
3393 qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3394
3395 if (!card->dev && qeth_l3_setup_netdev(card)) {
3396 rc = -ENODEV;
3397 goto out_remove;
3398 }
3399
3400 card->state = CARD_STATE_HARDSETUP;
3401 qeth_print_status_message(card);
3402
3403 /* softsetup */
3404 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3405
3406 rc = qeth_send_startlan(card);
3407 if (rc) {
3408 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3409 if (rc == 0xe080) {
3410 dev_warn(&card->gdev->dev,
3411 "The LAN is offline\n");
3412 card->lan_online = 0;
3413 goto out;
3414 }
3415 rc = -ENODEV;
3416 goto out_remove;
3417 } else
3418 card->lan_online = 1;
3419
3420 rc = qeth_l3_setadapter_parms(card);
3421 if (rc)
3422 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3423 if (!card->options.sniffer) {
3424 rc = qeth_l3_start_ipassists(card);
3425 if (rc)
3426 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3427 qeth_l3_set_large_send(card, card->options.large_send);
3428 rc = qeth_l3_setrouting_v4(card);
3429 if (rc)
3430 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3431 rc = qeth_l3_setrouting_v6(card);
3432 if (rc)
3433 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3434 }
3435 netif_tx_disable(card->dev);
3436
3437 rc = qeth_init_qdio_queues(card);
3438 if (rc) {
3439 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3440 rc = -ENODEV;
3441 goto out_remove;
3442 }
3443 card->state = CARD_STATE_SOFTSETUP;
3444 netif_carrier_on(card->dev);
3445
3446 qeth_set_allowed_threads(card, 0xffffffff, 0);
3447 qeth_l3_set_ip_addr_list(card);
3448 if (recover_flag == CARD_STATE_RECOVER) {
3449 if (recovery_mode)
3450 qeth_l3_open(card->dev);
3451 else {
3452 rtnl_lock();
3453 dev_open(card->dev);
3454 rtnl_unlock();
3455 }
3456 qeth_l3_set_multicast_list(card->dev);
3457 }
3458 /* let user_space know that device is online */
3459 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3460 out:
3461 mutex_unlock(&card->conf_mutex);
3462 return 0;
3463 out_remove:
3464 card->use_hard_stop = 1;
3465 qeth_l3_stop_card(card, 0);
3466 ccw_device_set_offline(CARD_DDEV(card));
3467 ccw_device_set_offline(CARD_WDEV(card));
3468 ccw_device_set_offline(CARD_RDEV(card));
3469 if (recover_flag == CARD_STATE_RECOVER)
3470 card->state = CARD_STATE_RECOVER;
3471 else
3472 card->state = CARD_STATE_DOWN;
3473 mutex_unlock(&card->conf_mutex);
3474 return rc;
3475 }
3476
3477 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3478 {
3479 return __qeth_l3_set_online(gdev, 0);
3480 }
3481
3482 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3483 int recovery_mode)
3484 {
3485 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3486 int rc = 0, rc2 = 0, rc3 = 0;
3487 enum qeth_card_states recover_flag;
3488
3489 mutex_lock(&card->conf_mutex);
3490 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3491 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3492
3493 if (card->dev && netif_carrier_ok(card->dev))
3494 netif_carrier_off(card->dev);
3495 recover_flag = card->state;
3496 qeth_l3_stop_card(card, recovery_mode);
3497 rc = ccw_device_set_offline(CARD_DDEV(card));
3498 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3499 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3500 if (!rc)
3501 rc = (rc2) ? rc2 : rc3;
3502 if (rc)
3503 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3504 if (recover_flag == CARD_STATE_UP)
3505 card->state = CARD_STATE_RECOVER;
3506 /* let user_space know that device is offline */
3507 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3508 mutex_unlock(&card->conf_mutex);
3509 return 0;
3510 }
3511
3512 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3513 {
3514 return __qeth_l3_set_offline(cgdev, 0);
3515 }
3516
3517 static int qeth_l3_recover(void *ptr)
3518 {
3519 struct qeth_card *card;
3520 int rc = 0;
3521
3522 card = (struct qeth_card *) ptr;
3523 QETH_DBF_TEXT(TRACE, 2, "recover1");
3524 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3525 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3526 return 0;
3527 QETH_DBF_TEXT(TRACE, 2, "recover2");
3528 dev_warn(&card->gdev->dev,
3529 "A recovery process has been started for the device\n");
3530 card->use_hard_stop = 1;
3531 __qeth_l3_set_offline(card->gdev, 1);
3532 rc = __qeth_l3_set_online(card->gdev, 1);
3533 /* don't run another scheduled recovery */
3534 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3535 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3536 if (!rc)
3537 dev_info(&card->gdev->dev,
3538 "Device successfully recovered!\n");
3539 else {
3540 rtnl_lock();
3541 dev_close(card->dev);
3542 rtnl_unlock();
3543 dev_warn(&card->gdev->dev, "The qeth device driver "
3544 "failed to recover an error on the device\n");
3545 }
3546 return 0;
3547 }
3548
3549 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3550 {
3551 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3552 qeth_l3_clear_ip_list(card, 0, 0);
3553 qeth_qdio_clear_card(card, 0);
3554 qeth_clear_qdio_buffers(card);
3555 }
3556
3557 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3558 {
3559 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3560
3561 if (card->dev)
3562 netif_device_detach(card->dev);
3563 qeth_set_allowed_threads(card, 0, 1);
3564 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3565 if (gdev->state == CCWGROUP_OFFLINE)
3566 return 0;
3567 if (card->state == CARD_STATE_UP) {
3568 card->use_hard_stop = 1;
3569 __qeth_l3_set_offline(card->gdev, 1);
3570 } else
3571 __qeth_l3_set_offline(card->gdev, 0);
3572 return 0;
3573 }
3574
3575 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3576 {
3577 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3578 int rc = 0;
3579
3580 if (gdev->state == CCWGROUP_OFFLINE)
3581 goto out;
3582
3583 if (card->state == CARD_STATE_RECOVER) {
3584 rc = __qeth_l3_set_online(card->gdev, 1);
3585 if (rc) {
3586 rtnl_lock();
3587 dev_close(card->dev);
3588 rtnl_unlock();
3589 }
3590 } else
3591 rc = __qeth_l3_set_online(card->gdev, 0);
3592 out:
3593 qeth_set_allowed_threads(card, 0xffffffff, 0);
3594 if (card->dev)
3595 netif_device_attach(card->dev);
3596 if (rc)
3597 dev_warn(&card->gdev->dev, "The qeth device driver "
3598 "failed to recover an error on the device\n");
3599 return rc;
3600 }
3601
3602 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3603 .probe = qeth_l3_probe_device,
3604 .remove = qeth_l3_remove_device,
3605 .set_online = qeth_l3_set_online,
3606 .set_offline = qeth_l3_set_offline,
3607 .shutdown = qeth_l3_shutdown,
3608 .freeze = qeth_l3_pm_suspend,
3609 .thaw = qeth_l3_pm_resume,
3610 .restore = qeth_l3_pm_resume,
3611 };
3612 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3613
3614 static int qeth_l3_ip_event(struct notifier_block *this,
3615 unsigned long event, void *ptr)
3616 {
3617 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3618 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3619 struct qeth_ipaddr *addr;
3620 struct qeth_card *card;
3621
3622 if (dev_net(dev) != &init_net)
3623 return NOTIFY_DONE;
3624
3625 QETH_DBF_TEXT(TRACE, 3, "ipevent");
3626 card = qeth_l3_get_card_from_dev(dev);
3627 if (!card)
3628 return NOTIFY_DONE;
3629
3630 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3631 if (addr != NULL) {
3632 addr->u.a4.addr = ifa->ifa_address;
3633 addr->u.a4.mask = ifa->ifa_mask;
3634 addr->type = QETH_IP_TYPE_NORMAL;
3635 } else
3636 goto out;
3637
3638 switch (event) {
3639 case NETDEV_UP:
3640 if (!qeth_l3_add_ip(card, addr))
3641 kfree(addr);
3642 break;
3643 case NETDEV_DOWN:
3644 if (!qeth_l3_delete_ip(card, addr))
3645 kfree(addr);
3646 break;
3647 default:
3648 break;
3649 }
3650 qeth_l3_set_ip_addr_list(card);
3651 out:
3652 return NOTIFY_DONE;
3653 }
3654
3655 static struct notifier_block qeth_l3_ip_notifier = {
3656 qeth_l3_ip_event,
3657 NULL,
3658 };
3659
3660 #ifdef CONFIG_QETH_IPV6
3661 /**
3662 * IPv6 event handler
3663 */
3664 static int qeth_l3_ip6_event(struct notifier_block *this,
3665 unsigned long event, void *ptr)
3666 {
3667 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3668 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3669 struct qeth_ipaddr *addr;
3670 struct qeth_card *card;
3671
3672 QETH_DBF_TEXT(TRACE, 3, "ip6event");
3673
3674 card = qeth_l3_get_card_from_dev(dev);
3675 if (!card)
3676 return NOTIFY_DONE;
3677 if (!qeth_is_supported(card, IPA_IPV6))
3678 return NOTIFY_DONE;
3679
3680 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3681 if (addr != NULL) {
3682 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3683 addr->u.a6.pfxlen = ifa->prefix_len;
3684 addr->type = QETH_IP_TYPE_NORMAL;
3685 } else
3686 goto out;
3687
3688 switch (event) {
3689 case NETDEV_UP:
3690 if (!qeth_l3_add_ip(card, addr))
3691 kfree(addr);
3692 break;
3693 case NETDEV_DOWN:
3694 if (!qeth_l3_delete_ip(card, addr))
3695 kfree(addr);
3696 break;
3697 default:
3698 break;
3699 }
3700 qeth_l3_set_ip_addr_list(card);
3701 out:
3702 return NOTIFY_DONE;
3703 }
3704
3705 static struct notifier_block qeth_l3_ip6_notifier = {
3706 qeth_l3_ip6_event,
3707 NULL,
3708 };
3709 #endif
3710
3711 static int qeth_l3_register_notifiers(void)
3712 {
3713 int rc;
3714
3715 QETH_DBF_TEXT(TRACE, 5, "regnotif");
3716 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3717 if (rc)
3718 return rc;
3719 #ifdef CONFIG_QETH_IPV6
3720 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3721 if (rc) {
3722 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3723 return rc;
3724 }
3725 #else
3726 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3727 #endif
3728 return 0;
3729 }
3730
3731 static void qeth_l3_unregister_notifiers(void)
3732 {
3733
3734 QETH_DBF_TEXT(TRACE, 5, "unregnot");
3735 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3736 #ifdef CONFIG_QETH_IPV6
3737 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3738 #endif /* QETH_IPV6 */
3739 }
3740
3741 static int __init qeth_l3_init(void)
3742 {
3743 int rc = 0;
3744
3745 pr_info("register layer 3 discipline\n");
3746 rc = qeth_l3_register_notifiers();
3747 return rc;
3748 }
3749
3750 static void __exit qeth_l3_exit(void)
3751 {
3752 qeth_l3_unregister_notifiers();
3753 pr_info("unregister layer 3 discipline\n");
3754 }
3755
3756 module_init(qeth_l3_init);
3757 module_exit(qeth_l3_exit);
3758 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3759 MODULE_DESCRIPTION("qeth layer 3 discipline");
3760 MODULE_LICENSE("GPL");
Linux 2.6 libata-dev (mirror)