Loading...
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/bitops.h>
17#include <linux/string.h>
18#include <linux/errno.h>
19#include <linux/kernel.h>
20#include <linux/etherdevice.h>
21#include <linux/mii.h>
22#include <linux/ip.h>
23#include <linux/ipv6.h>
24#include <linux/inetdevice.h>
25#include <linux/igmp.h>
26#include <linux/slab.h>
27#include <linux/if_vlan.h>
28
29#include <net/ip.h>
30#include <net/arp.h>
31#include <net/ip6_checksum.h>
32
33#include "qeth_l3.h"
34
35
36static int qeth_l3_set_offline(struct ccwgroup_device *);
37static int qeth_l3_recover(void *);
38static int qeth_l3_stop(struct net_device *);
39static void qeth_l3_set_multicast_list(struct net_device *);
40static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
41static int qeth_l3_register_addr_entry(struct qeth_card *,
42 struct qeth_ipaddr *);
43static int qeth_l3_deregister_addr_entry(struct qeth_card *,
44 struct qeth_ipaddr *);
45static int __qeth_l3_set_online(struct ccwgroup_device *, int);
46static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
47
48static int qeth_l3_isxdigit(char *buf)
49{
50 while (*buf) {
51 if (!isxdigit(*buf++))
52 return 0;
53 }
54 return 1;
55}
56
57void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
58{
59 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
60}
61
62int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
63{
64 int count = 0, rc = 0;
65 int in[4];
66 char c;
67
68 rc = sscanf(buf, "%u.%u.%u.%u%c",
69 &in[0], &in[1], &in[2], &in[3], &c);
70 if (rc != 4 && (rc != 5 || c != '\n'))
71 return -EINVAL;
72 for (count = 0; count < 4; count++) {
73 if (in[count] > 255)
74 return -EINVAL;
75 addr[count] = in[count];
76 }
77 return 0;
78}
79
80void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
81{
82 sprintf(buf, "%pI6", addr);
83}
84
85int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
86{
87 const char *end, *end_tmp, *start;
88 __u16 *in;
89 char num[5];
90 int num2, cnt, out, found, save_cnt;
91 unsigned short in_tmp[8] = {0, };
92
93 cnt = out = found = save_cnt = num2 = 0;
94 end = start = buf;
95 in = (__u16 *) addr;
96 memset(in, 0, 16);
97 while (*end) {
98 end = strchr(start, ':');
99 if (end == NULL) {
100 end = buf + strlen(buf);
101 end_tmp = strchr(start, '\n');
102 if (end_tmp != NULL)
103 end = end_tmp;
104 out = 1;
105 }
106 if ((end - start)) {
107 memset(num, 0, 5);
108 if ((end - start) > 4)
109 return -EINVAL;
110 memcpy(num, start, end - start);
111 if (!qeth_l3_isxdigit(num))
112 return -EINVAL;
113 sscanf(start, "%x", &num2);
114 if (found)
115 in_tmp[save_cnt++] = num2;
116 else
117 in[cnt++] = num2;
118 if (out)
119 break;
120 } else {
121 if (found)
122 return -EINVAL;
123 found = 1;
124 }
125 start = ++end;
126 }
127 if (cnt + save_cnt > 8)
128 return -EINVAL;
129 cnt = 7;
130 while (save_cnt)
131 in[cnt--] = in_tmp[--save_cnt];
132 return 0;
133}
134
135void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
136 char *buf)
137{
138 if (proto == QETH_PROT_IPV4)
139 qeth_l3_ipaddr4_to_string(addr, buf);
140 else if (proto == QETH_PROT_IPV6)
141 qeth_l3_ipaddr6_to_string(addr, buf);
142}
143
144int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
145 __u8 *addr)
146{
147 if (proto == QETH_PROT_IPV4)
148 return qeth_l3_string_to_ipaddr4(buf, addr);
149 else if (proto == QETH_PROT_IPV6)
150 return qeth_l3_string_to_ipaddr6(buf, addr);
151 else
152 return -EINVAL;
153}
154
155static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
156{
157 int i, j;
158 u8 octet;
159
160 for (i = 0; i < len; ++i) {
161 octet = addr[i];
162 for (j = 7; j >= 0; --j) {
163 bits[i*8 + j] = octet & 1;
164 octet >>= 1;
165 }
166 }
167}
168
169int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
170 struct qeth_ipaddr *addr)
171{
172 struct qeth_ipato_entry *ipatoe;
173 u8 addr_bits[128] = {0, };
174 u8 ipatoe_bits[128] = {0, };
175 int rc = 0;
176
177 if (!card->ipato.enabled)
178 return 0;
179
180 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
181 (addr->proto == QETH_PROT_IPV4)? 4:16);
182 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
183 if (addr->proto != ipatoe->proto)
184 continue;
185 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
186 (ipatoe->proto == QETH_PROT_IPV4) ?
187 4 : 16);
188 if (addr->proto == QETH_PROT_IPV4)
189 rc = !memcmp(addr_bits, ipatoe_bits,
190 min(32, ipatoe->mask_bits));
191 else
192 rc = !memcmp(addr_bits, ipatoe_bits,
193 min(128, ipatoe->mask_bits));
194 if (rc)
195 break;
196 }
197 /* invert? */
198 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
199 rc = !rc;
200 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
201 rc = !rc;
202
203 return rc;
204}
205
206/*
207 * Add IP to be added to todo list. If there is already an "add todo"
208 * in this list we just incremenent the reference count.
209 * Returns 0 if we just incremented reference count.
210 */
211static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
212 struct qeth_ipaddr *addr, int add)
213{
214 struct qeth_ipaddr *tmp, *t;
215 int found = 0;
216
217 if (card->options.sniffer)
218 return 0;
219 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
220 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
221 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
222 return 0;
223 if ((tmp->proto == QETH_PROT_IPV4) &&
224 (addr->proto == QETH_PROT_IPV4) &&
225 (tmp->type == addr->type) &&
226 (tmp->is_multicast == addr->is_multicast) &&
227 (tmp->u.a4.addr == addr->u.a4.addr) &&
228 (tmp->u.a4.mask == addr->u.a4.mask)) {
229 found = 1;
230 break;
231 }
232 if ((tmp->proto == QETH_PROT_IPV6) &&
233 (addr->proto == QETH_PROT_IPV6) &&
234 (tmp->type == addr->type) &&
235 (tmp->is_multicast == addr->is_multicast) &&
236 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
237 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
238 sizeof(struct in6_addr)) == 0)) {
239 found = 1;
240 break;
241 }
242 }
243 if (found) {
244 if (addr->users != 0)
245 tmp->users += addr->users;
246 else
247 tmp->users += add ? 1 : -1;
248 if (tmp->users == 0) {
249 list_del(&tmp->entry);
250 kfree(tmp);
251 }
252 return 0;
253 } else {
254 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
255 list_add(&addr->entry, card->ip_tbd_list);
256 else {
257 if (addr->users == 0)
258 addr->users += add ? 1 : -1;
259 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
260 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
261 QETH_CARD_TEXT(card, 2, "tkovaddr");
262 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
263 }
264 list_add_tail(&addr->entry, card->ip_tbd_list);
265 }
266 return 1;
267 }
268}
269
270static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
271{
272 unsigned long flags;
273 int rc = 0;
274
275 QETH_CARD_TEXT(card, 4, "delip");
276
277 if (addr->proto == QETH_PROT_IPV4)
278 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
279 else {
280 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
281 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
282 }
283 spin_lock_irqsave(&card->ip_lock, flags);
284 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
285 spin_unlock_irqrestore(&card->ip_lock, flags);
286 return rc;
287}
288
289static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
290{
291 unsigned long flags;
292 int rc = 0;
293
294 QETH_CARD_TEXT(card, 4, "addip");
295 if (addr->proto == QETH_PROT_IPV4)
296 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
297 else {
298 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
299 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
300 }
301 spin_lock_irqsave(&card->ip_lock, flags);
302 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
303 spin_unlock_irqrestore(&card->ip_lock, flags);
304 return rc;
305}
306
307
308static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
309 enum qeth_prot_versions prot)
310{
311 struct qeth_ipaddr *addr;
312
313 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
314 if (addr == NULL) {
315 return NULL;
316 }
317 addr->type = QETH_IP_TYPE_NORMAL;
318 addr->proto = prot;
319 return addr;
320}
321
322static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
323{
324 struct qeth_ipaddr *iptodo;
325 unsigned long flags;
326
327 QETH_CARD_TEXT(card, 4, "delmc");
328 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
329 if (!iptodo) {
330 QETH_CARD_TEXT(card, 2, "dmcnomem");
331 return;
332 }
333 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
334 spin_lock_irqsave(&card->ip_lock, flags);
335 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
336 kfree(iptodo);
337 spin_unlock_irqrestore(&card->ip_lock, flags);
338}
339
340/*
341 * Add/remove address to/from card's ip list, i.e. try to add or remove
342 * reference to/from an IP address that is already registered on the card.
343 * Returns:
344 * 0 address was on card and its reference count has been adjusted,
345 * but is still > 0, so nothing has to be done
346 * also returns 0 if card was not on card and the todo was to delete
347 * the address -> there is also nothing to be done
348 * 1 address was not on card and the todo is to add it to the card's ip
349 * list
350 * -1 address was on card and its reference count has been decremented
351 * to <= 0 by the todo -> address must be removed from card
352 */
353static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
354 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
355{
356 struct qeth_ipaddr *addr;
357 int found = 0;
358
359 list_for_each_entry(addr, &card->ip_list, entry) {
360 if ((addr->proto == QETH_PROT_IPV4) &&
361 (todo->proto == QETH_PROT_IPV4) &&
362 (addr->type == todo->type) &&
363 (addr->u.a4.addr == todo->u.a4.addr) &&
364 (addr->u.a4.mask == todo->u.a4.mask)) {
365 found = 1;
366 break;
367 }
368 if ((addr->proto == QETH_PROT_IPV6) &&
369 (todo->proto == QETH_PROT_IPV6) &&
370 (addr->type == todo->type) &&
371 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
372 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
373 sizeof(struct in6_addr)) == 0)) {
374 found = 1;
375 break;
376 }
377 }
378 if (found) {
379 addr->users += todo->users;
380 if (addr->users <= 0) {
381 *__addr = addr;
382 return -1;
383 } else {
384 /* for VIPA and RXIP limit refcount to 1 */
385 if (addr->type != QETH_IP_TYPE_NORMAL)
386 addr->users = 1;
387 return 0;
388 }
389 }
390 if (todo->users > 0) {
391 /* for VIPA and RXIP limit refcount to 1 */
392 if (todo->type != QETH_IP_TYPE_NORMAL)
393 todo->users = 1;
394 return 1;
395 } else
396 return 0;
397}
398
399static void __qeth_l3_delete_all_mc(struct qeth_card *card,
400 unsigned long *flags)
401{
402 struct list_head fail_list;
403 struct qeth_ipaddr *addr, *tmp;
404 int rc;
405
406 INIT_LIST_HEAD(&fail_list);
407again:
408 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
409 if (addr->is_multicast) {
410 list_del(&addr->entry);
411 spin_unlock_irqrestore(&card->ip_lock, *flags);
412 rc = qeth_l3_deregister_addr_entry(card, addr);
413 spin_lock_irqsave(&card->ip_lock, *flags);
414 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
415 kfree(addr);
416 else
417 list_add_tail(&addr->entry, &fail_list);
418 goto again;
419 }
420 }
421 list_splice(&fail_list, &card->ip_list);
422}
423
424static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
425{
426 struct list_head *tbd_list;
427 struct qeth_ipaddr *todo, *addr;
428 unsigned long flags;
429 int rc;
430
431 QETH_CARD_TEXT(card, 2, "sdiplist");
432 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
433
434 if ((card->state != CARD_STATE_UP &&
435 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
436 return;
437 }
438
439 spin_lock_irqsave(&card->ip_lock, flags);
440 tbd_list = card->ip_tbd_list;
441 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
442 if (!card->ip_tbd_list) {
443 QETH_CARD_TEXT(card, 0, "silnomem");
444 card->ip_tbd_list = tbd_list;
445 spin_unlock_irqrestore(&card->ip_lock, flags);
446 return;
447 } else
448 INIT_LIST_HEAD(card->ip_tbd_list);
449
450 while (!list_empty(tbd_list)) {
451 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
452 list_del(&todo->entry);
453 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
454 __qeth_l3_delete_all_mc(card, &flags);
455 kfree(todo);
456 continue;
457 }
458 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
459 if (rc == 0) {
460 /* nothing to be done; only adjusted refcount */
461 kfree(todo);
462 } else if (rc == 1) {
463 /* new entry to be added to on-card list */
464 spin_unlock_irqrestore(&card->ip_lock, flags);
465 rc = qeth_l3_register_addr_entry(card, todo);
466 spin_lock_irqsave(&card->ip_lock, flags);
467 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
468 list_add_tail(&todo->entry, &card->ip_list);
469 else
470 kfree(todo);
471 } else if (rc == -1) {
472 /* on-card entry to be removed */
473 list_del_init(&addr->entry);
474 spin_unlock_irqrestore(&card->ip_lock, flags);
475 rc = qeth_l3_deregister_addr_entry(card, addr);
476 spin_lock_irqsave(&card->ip_lock, flags);
477 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
478 kfree(addr);
479 else
480 list_add_tail(&addr->entry, &card->ip_list);
481 kfree(todo);
482 }
483 }
484 spin_unlock_irqrestore(&card->ip_lock, flags);
485 kfree(tbd_list);
486}
487
488static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
489{
490 struct qeth_ipaddr *addr, *tmp;
491 unsigned long flags;
492
493 QETH_CARD_TEXT(card, 4, "clearip");
494 if (recover && card->options.sniffer)
495 return;
496 spin_lock_irqsave(&card->ip_lock, flags);
497 /* clear todo list */
498 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
499 list_del(&addr->entry);
500 kfree(addr);
501 }
502
503 while (!list_empty(&card->ip_list)) {
504 addr = list_entry(card->ip_list.next,
505 struct qeth_ipaddr, entry);
506 list_del_init(&addr->entry);
507 if (!recover || addr->is_multicast) {
508 kfree(addr);
509 continue;
510 }
511 list_add_tail(&addr->entry, card->ip_tbd_list);
512 }
513 spin_unlock_irqrestore(&card->ip_lock, flags);
514}
515
516static int qeth_l3_address_exists_in_list(struct list_head *list,
517 struct qeth_ipaddr *addr, int same_type)
518{
519 struct qeth_ipaddr *tmp;
520
521 list_for_each_entry(tmp, list, entry) {
522 if ((tmp->proto == QETH_PROT_IPV4) &&
523 (addr->proto == QETH_PROT_IPV4) &&
524 ((same_type && (tmp->type == addr->type)) ||
525 (!same_type && (tmp->type != addr->type))) &&
526 (tmp->u.a4.addr == addr->u.a4.addr))
527 return 1;
528
529 if ((tmp->proto == QETH_PROT_IPV6) &&
530 (addr->proto == QETH_PROT_IPV6) &&
531 ((same_type && (tmp->type == addr->type)) ||
532 (!same_type && (tmp->type != addr->type))) &&
533 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
534 sizeof(struct in6_addr)) == 0))
535 return 1;
536
537 }
538 return 0;
539}
540
541static int qeth_l3_send_setdelmc(struct qeth_card *card,
542 struct qeth_ipaddr *addr, int ipacmd)
543{
544 int rc;
545 struct qeth_cmd_buffer *iob;
546 struct qeth_ipa_cmd *cmd;
547
548 QETH_CARD_TEXT(card, 4, "setdelmc");
549
550 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
551 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
552 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
553 if (addr->proto == QETH_PROT_IPV6)
554 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
555 sizeof(struct in6_addr));
556 else
557 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
558
559 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
560
561 return rc;
562}
563
564static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
565{
566 int i, j;
567 for (i = 0; i < 16; i++) {
568 j = (len) - (i * 8);
569 if (j >= 8)
570 netmask[i] = 0xff;
571 else if (j > 0)
572 netmask[i] = (u8)(0xFF00 >> j);
573 else
574 netmask[i] = 0;
575 }
576}
577
578static int qeth_l3_send_setdelip(struct qeth_card *card,
579 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
580{
581 int rc;
582 struct qeth_cmd_buffer *iob;
583 struct qeth_ipa_cmd *cmd;
584 __u8 netmask[16];
585
586 QETH_CARD_TEXT(card, 4, "setdelip");
587 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
588
589 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
590 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
591 if (addr->proto == QETH_PROT_IPV6) {
592 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
593 sizeof(struct in6_addr));
594 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
595 memcpy(cmd->data.setdelip6.mask, netmask,
596 sizeof(struct in6_addr));
597 cmd->data.setdelip6.flags = flags;
598 } else {
599 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
600 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
601 cmd->data.setdelip4.flags = flags;
602 }
603
604 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
605
606 return rc;
607}
608
609static int qeth_l3_send_setrouting(struct qeth_card *card,
610 enum qeth_routing_types type, enum qeth_prot_versions prot)
611{
612 int rc;
613 struct qeth_ipa_cmd *cmd;
614 struct qeth_cmd_buffer *iob;
615
616 QETH_CARD_TEXT(card, 4, "setroutg");
617 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
618 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
619 cmd->data.setrtg.type = (type);
620 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
621
622 return rc;
623}
624
625static void qeth_l3_correct_routing_type(struct qeth_card *card,
626 enum qeth_routing_types *type, enum qeth_prot_versions prot)
627{
628 if (card->info.type == QETH_CARD_TYPE_IQD) {
629 switch (*type) {
630 case NO_ROUTER:
631 case PRIMARY_CONNECTOR:
632 case SECONDARY_CONNECTOR:
633 case MULTICAST_ROUTER:
634 return;
635 default:
636 goto out_inval;
637 }
638 } else {
639 switch (*type) {
640 case NO_ROUTER:
641 case PRIMARY_ROUTER:
642 case SECONDARY_ROUTER:
643 return;
644 case MULTICAST_ROUTER:
645 if (qeth_is_ipafunc_supported(card, prot,
646 IPA_OSA_MC_ROUTER))
647 return;
648 default:
649 goto out_inval;
650 }
651 }
652out_inval:
653 *type = NO_ROUTER;
654}
655
656int qeth_l3_setrouting_v4(struct qeth_card *card)
657{
658 int rc;
659
660 QETH_CARD_TEXT(card, 3, "setrtg4");
661
662 qeth_l3_correct_routing_type(card, &card->options.route4.type,
663 QETH_PROT_IPV4);
664
665 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
666 QETH_PROT_IPV4);
667 if (rc) {
668 card->options.route4.type = NO_ROUTER;
669 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
670 " on %s. Type set to 'no router'.\n", rc,
671 QETH_CARD_IFNAME(card));
672 }
673 return rc;
674}
675
676int qeth_l3_setrouting_v6(struct qeth_card *card)
677{
678 int rc = 0;
679
680 QETH_CARD_TEXT(card, 3, "setrtg6");
681#ifdef CONFIG_QETH_IPV6
682
683 if (!qeth_is_supported(card, IPA_IPV6))
684 return 0;
685 qeth_l3_correct_routing_type(card, &card->options.route6.type,
686 QETH_PROT_IPV6);
687
688 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
689 QETH_PROT_IPV6);
690 if (rc) {
691 card->options.route6.type = NO_ROUTER;
692 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
693 " on %s. Type set to 'no router'.\n", rc,
694 QETH_CARD_IFNAME(card));
695 }
696#endif
697 return rc;
698}
699
700/*
701 * IP address takeover related functions
702 */
703static void qeth_l3_clear_ipato_list(struct qeth_card *card)
704{
705
706 struct qeth_ipato_entry *ipatoe, *tmp;
707 unsigned long flags;
708
709 spin_lock_irqsave(&card->ip_lock, flags);
710 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
711 list_del(&ipatoe->entry);
712 kfree(ipatoe);
713 }
714 spin_unlock_irqrestore(&card->ip_lock, flags);
715}
716
717int qeth_l3_add_ipato_entry(struct qeth_card *card,
718 struct qeth_ipato_entry *new)
719{
720 struct qeth_ipato_entry *ipatoe;
721 unsigned long flags;
722 int rc = 0;
723
724 QETH_CARD_TEXT(card, 2, "addipato");
725 spin_lock_irqsave(&card->ip_lock, flags);
726 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
727 if (ipatoe->proto != new->proto)
728 continue;
729 if (!memcmp(ipatoe->addr, new->addr,
730 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
731 (ipatoe->mask_bits == new->mask_bits)) {
732 rc = -EEXIST;
733 break;
734 }
735 }
736 if (!rc)
737 list_add_tail(&new->entry, &card->ipato.entries);
738
739 spin_unlock_irqrestore(&card->ip_lock, flags);
740 return rc;
741}
742
743void qeth_l3_del_ipato_entry(struct qeth_card *card,
744 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
745{
746 struct qeth_ipato_entry *ipatoe, *tmp;
747 unsigned long flags;
748
749 QETH_CARD_TEXT(card, 2, "delipato");
750 spin_lock_irqsave(&card->ip_lock, flags);
751 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
752 if (ipatoe->proto != proto)
753 continue;
754 if (!memcmp(ipatoe->addr, addr,
755 (proto == QETH_PROT_IPV4)? 4:16) &&
756 (ipatoe->mask_bits == mask_bits)) {
757 list_del(&ipatoe->entry);
758 kfree(ipatoe);
759 }
760 }
761 spin_unlock_irqrestore(&card->ip_lock, flags);
762}
763
764/*
765 * VIPA related functions
766 */
767int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
768 const u8 *addr)
769{
770 struct qeth_ipaddr *ipaddr;
771 unsigned long flags;
772 int rc = 0;
773
774 ipaddr = qeth_l3_get_addr_buffer(proto);
775 if (ipaddr) {
776 if (proto == QETH_PROT_IPV4) {
777 QETH_CARD_TEXT(card, 2, "addvipa4");
778 memcpy(&ipaddr->u.a4.addr, addr, 4);
779 ipaddr->u.a4.mask = 0;
780 } else if (proto == QETH_PROT_IPV6) {
781 QETH_CARD_TEXT(card, 2, "addvipa6");
782 memcpy(&ipaddr->u.a6.addr, addr, 16);
783 ipaddr->u.a6.pfxlen = 0;
784 }
785 ipaddr->type = QETH_IP_TYPE_VIPA;
786 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
787 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
788 } else
789 return -ENOMEM;
790 spin_lock_irqsave(&card->ip_lock, flags);
791 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
792 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
793 rc = -EEXIST;
794 spin_unlock_irqrestore(&card->ip_lock, flags);
795 if (rc) {
796 return rc;
797 }
798 if (!qeth_l3_add_ip(card, ipaddr))
799 kfree(ipaddr);
800 qeth_l3_set_ip_addr_list(card);
801 return rc;
802}
803
804void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
805 const u8 *addr)
806{
807 struct qeth_ipaddr *ipaddr;
808
809 ipaddr = qeth_l3_get_addr_buffer(proto);
810 if (ipaddr) {
811 if (proto == QETH_PROT_IPV4) {
812 QETH_CARD_TEXT(card, 2, "delvipa4");
813 memcpy(&ipaddr->u.a4.addr, addr, 4);
814 ipaddr->u.a4.mask = 0;
815 } else if (proto == QETH_PROT_IPV6) {
816 QETH_CARD_TEXT(card, 2, "delvipa6");
817 memcpy(&ipaddr->u.a6.addr, addr, 16);
818 ipaddr->u.a6.pfxlen = 0;
819 }
820 ipaddr->type = QETH_IP_TYPE_VIPA;
821 } else
822 return;
823 if (!qeth_l3_delete_ip(card, ipaddr))
824 kfree(ipaddr);
825 qeth_l3_set_ip_addr_list(card);
826}
827
828/*
829 * proxy ARP related functions
830 */
831int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
832 const u8 *addr)
833{
834 struct qeth_ipaddr *ipaddr;
835 unsigned long flags;
836 int rc = 0;
837
838 ipaddr = qeth_l3_get_addr_buffer(proto);
839 if (ipaddr) {
840 if (proto == QETH_PROT_IPV4) {
841 QETH_CARD_TEXT(card, 2, "addrxip4");
842 memcpy(&ipaddr->u.a4.addr, addr, 4);
843 ipaddr->u.a4.mask = 0;
844 } else if (proto == QETH_PROT_IPV6) {
845 QETH_CARD_TEXT(card, 2, "addrxip6");
846 memcpy(&ipaddr->u.a6.addr, addr, 16);
847 ipaddr->u.a6.pfxlen = 0;
848 }
849 ipaddr->type = QETH_IP_TYPE_RXIP;
850 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
851 ipaddr->del_flags = 0;
852 } else
853 return -ENOMEM;
854 spin_lock_irqsave(&card->ip_lock, flags);
855 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
856 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
857 rc = -EEXIST;
858 spin_unlock_irqrestore(&card->ip_lock, flags);
859 if (rc) {
860 return rc;
861 }
862 if (!qeth_l3_add_ip(card, ipaddr))
863 kfree(ipaddr);
864 qeth_l3_set_ip_addr_list(card);
865 return 0;
866}
867
868void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
869 const u8 *addr)
870{
871 struct qeth_ipaddr *ipaddr;
872
873 ipaddr = qeth_l3_get_addr_buffer(proto);
874 if (ipaddr) {
875 if (proto == QETH_PROT_IPV4) {
876 QETH_CARD_TEXT(card, 2, "addrxip4");
877 memcpy(&ipaddr->u.a4.addr, addr, 4);
878 ipaddr->u.a4.mask = 0;
879 } else if (proto == QETH_PROT_IPV6) {
880 QETH_CARD_TEXT(card, 2, "addrxip6");
881 memcpy(&ipaddr->u.a6.addr, addr, 16);
882 ipaddr->u.a6.pfxlen = 0;
883 }
884 ipaddr->type = QETH_IP_TYPE_RXIP;
885 } else
886 return;
887 if (!qeth_l3_delete_ip(card, ipaddr))
888 kfree(ipaddr);
889 qeth_l3_set_ip_addr_list(card);
890}
891
892static int qeth_l3_register_addr_entry(struct qeth_card *card,
893 struct qeth_ipaddr *addr)
894{
895 char buf[50];
896 int rc = 0;
897 int cnt = 3;
898
899 if (addr->proto == QETH_PROT_IPV4) {
900 QETH_CARD_TEXT(card, 2, "setaddr4");
901 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
902 } else if (addr->proto == QETH_PROT_IPV6) {
903 QETH_CARD_TEXT(card, 2, "setaddr6");
904 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
905 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
906 } else {
907 QETH_CARD_TEXT(card, 2, "setaddr?");
908 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
909 }
910 do {
911 if (addr->is_multicast)
912 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
913 else
914 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
915 addr->set_flags);
916 if (rc)
917 QETH_CARD_TEXT(card, 2, "failed");
918 } while ((--cnt > 0) && rc);
919 if (rc) {
920 QETH_CARD_TEXT(card, 2, "FAILED");
921 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
922 dev_warn(&card->gdev->dev,
923 "Registering IP address %s failed\n", buf);
924 }
925 return rc;
926}
927
928static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
929 struct qeth_ipaddr *addr)
930{
931 int rc = 0;
932
933 if (addr->proto == QETH_PROT_IPV4) {
934 QETH_CARD_TEXT(card, 2, "deladdr4");
935 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
936 } else if (addr->proto == QETH_PROT_IPV6) {
937 QETH_CARD_TEXT(card, 2, "deladdr6");
938 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
939 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
940 } else {
941 QETH_CARD_TEXT(card, 2, "deladdr?");
942 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
943 }
944 if (addr->is_multicast)
945 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
946 else
947 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
948 addr->del_flags);
949 if (rc)
950 QETH_CARD_TEXT(card, 2, "failed");
951
952 return rc;
953}
954
955static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
956{
957 if (cast_type == RTN_MULTICAST)
958 return QETH_CAST_MULTICAST;
959 if (cast_type == RTN_BROADCAST)
960 return QETH_CAST_BROADCAST;
961 return QETH_CAST_UNICAST;
962}
963
964static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
965{
966 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
967 if (cast_type == RTN_MULTICAST)
968 return ct | QETH_CAST_MULTICAST;
969 if (cast_type == RTN_ANYCAST)
970 return ct | QETH_CAST_ANYCAST;
971 if (cast_type == RTN_BROADCAST)
972 return ct | QETH_CAST_BROADCAST;
973 return ct | QETH_CAST_UNICAST;
974}
975
976static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
977 __u32 mode)
978{
979 int rc;
980 struct qeth_cmd_buffer *iob;
981 struct qeth_ipa_cmd *cmd;
982
983 QETH_CARD_TEXT(card, 4, "adpmode");
984
985 iob = qeth_get_adapter_cmd(card, command,
986 sizeof(struct qeth_ipacmd_setadpparms));
987 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
988 cmd->data.setadapterparms.data.mode = mode;
989 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
990 NULL);
991 return rc;
992}
993
994static int qeth_l3_setadapter_hstr(struct qeth_card *card)
995{
996 int rc;
997
998 QETH_CARD_TEXT(card, 4, "adphstr");
999
1000 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1001 rc = qeth_l3_send_setadp_mode(card,
1002 IPA_SETADP_SET_BROADCAST_MODE,
1003 card->options.broadcast_mode);
1004 if (rc)
1005 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1006 "device %s: x%x\n",
1007 CARD_BUS_ID(card), rc);
1008 rc = qeth_l3_send_setadp_mode(card,
1009 IPA_SETADP_ALTER_MAC_ADDRESS,
1010 card->options.macaddr_mode);
1011 if (rc)
1012 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1013 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1014 return rc;
1015 }
1016 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1017 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1018 "to set broadcast mode, using ALLRINGS "
1019 "on device %s:\n", CARD_BUS_ID(card));
1020 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1021 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1022 "to set macaddr mode, using NONCANONICAL "
1023 "on device %s:\n", CARD_BUS_ID(card));
1024 return 0;
1025}
1026
1027static int qeth_l3_setadapter_parms(struct qeth_card *card)
1028{
1029 int rc;
1030
1031 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1032
1033 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1034 dev_info(&card->gdev->dev,
1035 "set adapter parameters not supported.\n");
1036 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1037 return 0;
1038 }
1039 rc = qeth_query_setadapterparms(card);
1040 if (rc) {
1041 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1042 "0x%x\n", dev_name(&card->gdev->dev), rc);
1043 return rc;
1044 }
1045 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1046 rc = qeth_setadpparms_change_macaddr(card);
1047 if (rc)
1048 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1049 " address failed\n");
1050 }
1051
1052 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1053 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1054 rc = qeth_l3_setadapter_hstr(card);
1055
1056 return rc;
1057}
1058
1059static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1060 struct qeth_reply *reply, unsigned long data)
1061{
1062 struct qeth_ipa_cmd *cmd;
1063
1064 QETH_CARD_TEXT(card, 4, "defadpcb");
1065
1066 cmd = (struct qeth_ipa_cmd *) data;
1067 if (cmd->hdr.return_code == 0) {
1068 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1069 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1070 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1071 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1072 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1073 }
1074 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1075 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1076 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1077 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1078 }
1079 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1080 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1081 card->info.tx_csum_mask =
1082 cmd->data.setassparms.data.flags_32bit;
1083 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1084 }
1085
1086 return 0;
1087}
1088
1089static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1090 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1091 __u16 len, enum qeth_prot_versions prot)
1092{
1093 struct qeth_cmd_buffer *iob;
1094 struct qeth_ipa_cmd *cmd;
1095
1096 QETH_CARD_TEXT(card, 4, "getasscm");
1097 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1098
1099 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1100 cmd->data.setassparms.hdr.assist_no = ipa_func;
1101 cmd->data.setassparms.hdr.length = 8 + len;
1102 cmd->data.setassparms.hdr.command_code = cmd_code;
1103 cmd->data.setassparms.hdr.return_code = 0;
1104 cmd->data.setassparms.hdr.seq_no = 0;
1105
1106 return iob;
1107}
1108
1109static int qeth_l3_send_setassparms(struct qeth_card *card,
1110 struct qeth_cmd_buffer *iob, __u16 len, long data,
1111 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1112 unsigned long),
1113 void *reply_param)
1114{
1115 int rc;
1116 struct qeth_ipa_cmd *cmd;
1117
1118 QETH_CARD_TEXT(card, 4, "sendassp");
1119
1120 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1121 if (len <= sizeof(__u32))
1122 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1123 else /* (len > sizeof(__u32)) */
1124 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1125
1126 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1127 return rc;
1128}
1129
1130#ifdef CONFIG_QETH_IPV6
1131static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1132 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1133{
1134 int rc;
1135 struct qeth_cmd_buffer *iob;
1136
1137 QETH_CARD_TEXT(card, 4, "simassp6");
1138 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1139 0, QETH_PROT_IPV6);
1140 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1141 qeth_l3_default_setassparms_cb, NULL);
1142 return rc;
1143}
1144#endif
1145
1146static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1147 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1148{
1149 int rc;
1150 int length = 0;
1151 struct qeth_cmd_buffer *iob;
1152
1153 QETH_CARD_TEXT(card, 4, "simassp4");
1154 if (data)
1155 length = sizeof(__u32);
1156 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1157 length, QETH_PROT_IPV4);
1158 rc = qeth_l3_send_setassparms(card, iob, length, data,
1159 qeth_l3_default_setassparms_cb, NULL);
1160 return rc;
1161}
1162
1163static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1164{
1165 int rc;
1166
1167 QETH_CARD_TEXT(card, 3, "ipaarp");
1168
1169 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1170 dev_info(&card->gdev->dev,
1171 "ARP processing not supported on %s!\n",
1172 QETH_CARD_IFNAME(card));
1173 return 0;
1174 }
1175 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1176 IPA_CMD_ASS_START, 0);
1177 if (rc) {
1178 dev_warn(&card->gdev->dev,
1179 "Starting ARP processing support for %s failed\n",
1180 QETH_CARD_IFNAME(card));
1181 }
1182 return rc;
1183}
1184
1185static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1186{
1187 int rc;
1188
1189 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1190
1191 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1192 dev_info(&card->gdev->dev,
1193 "Hardware IP fragmentation not supported on %s\n",
1194 QETH_CARD_IFNAME(card));
1195 return -EOPNOTSUPP;
1196 }
1197
1198 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1199 IPA_CMD_ASS_START, 0);
1200 if (rc) {
1201 dev_warn(&card->gdev->dev,
1202 "Starting IP fragmentation support for %s failed\n",
1203 QETH_CARD_IFNAME(card));
1204 } else
1205 dev_info(&card->gdev->dev,
1206 "Hardware IP fragmentation enabled \n");
1207 return rc;
1208}
1209
1210static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1211{
1212 int rc;
1213
1214 QETH_CARD_TEXT(card, 3, "stsrcmac");
1215
1216 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1217 dev_info(&card->gdev->dev,
1218 "Inbound source MAC-address not supported on %s\n",
1219 QETH_CARD_IFNAME(card));
1220 return -EOPNOTSUPP;
1221 }
1222
1223 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1224 IPA_CMD_ASS_START, 0);
1225 if (rc)
1226 dev_warn(&card->gdev->dev,
1227 "Starting source MAC-address support for %s failed\n",
1228 QETH_CARD_IFNAME(card));
1229 return rc;
1230}
1231
1232static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1233{
1234 int rc = 0;
1235
1236 QETH_CARD_TEXT(card, 3, "strtvlan");
1237
1238 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1239 dev_info(&card->gdev->dev,
1240 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1241 return -EOPNOTSUPP;
1242 }
1243
1244 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1245 IPA_CMD_ASS_START, 0);
1246 if (rc) {
1247 dev_warn(&card->gdev->dev,
1248 "Starting VLAN support for %s failed\n",
1249 QETH_CARD_IFNAME(card));
1250 } else {
1251 dev_info(&card->gdev->dev, "VLAN enabled\n");
1252 }
1253 return rc;
1254}
1255
1256static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1257{
1258 int rc;
1259
1260 QETH_CARD_TEXT(card, 3, "stmcast");
1261
1262 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1263 dev_info(&card->gdev->dev,
1264 "Multicast not supported on %s\n",
1265 QETH_CARD_IFNAME(card));
1266 return -EOPNOTSUPP;
1267 }
1268
1269 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1270 IPA_CMD_ASS_START, 0);
1271 if (rc) {
1272 dev_warn(&card->gdev->dev,
1273 "Starting multicast support for %s failed\n",
1274 QETH_CARD_IFNAME(card));
1275 } else {
1276 dev_info(&card->gdev->dev, "Multicast enabled\n");
1277 card->dev->flags |= IFF_MULTICAST;
1278 }
1279 return rc;
1280}
1281
1282#ifdef CONFIG_QETH_IPV6
1283static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1284{
1285 int rc;
1286
1287 QETH_CARD_TEXT(card, 3, "softipv6");
1288
1289 if (card->info.type == QETH_CARD_TYPE_IQD)
1290 goto out;
1291
1292 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1293 if (rc) {
1294 dev_err(&card->gdev->dev,
1295 "Activating IPv6 support for %s failed\n",
1296 QETH_CARD_IFNAME(card));
1297 return rc;
1298 }
1299 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1300 IPA_CMD_ASS_START, 3);
1301 if (rc) {
1302 dev_err(&card->gdev->dev,
1303 "Activating IPv6 support for %s failed\n",
1304 QETH_CARD_IFNAME(card));
1305 return rc;
1306 }
1307 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1308 IPA_CMD_ASS_START);
1309 if (rc) {
1310 dev_err(&card->gdev->dev,
1311 "Activating IPv6 support for %s failed\n",
1312 QETH_CARD_IFNAME(card));
1313 return rc;
1314 }
1315 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1316 IPA_CMD_ASS_START);
1317 if (rc) {
1318 dev_warn(&card->gdev->dev,
1319 "Enabling the passthrough mode for %s failed\n",
1320 QETH_CARD_IFNAME(card));
1321 return rc;
1322 }
1323out:
1324 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1325 return 0;
1326}
1327#endif
1328
1329static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1330{
1331 int rc = 0;
1332
1333 QETH_CARD_TEXT(card, 3, "strtipv6");
1334
1335 if (!qeth_is_supported(card, IPA_IPV6)) {
1336 dev_info(&card->gdev->dev,
1337 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1338 return 0;
1339 }
1340#ifdef CONFIG_QETH_IPV6
1341 rc = qeth_l3_softsetup_ipv6(card);
1342#endif
1343 return rc ;
1344}
1345
1346static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1347{
1348 int rc;
1349
1350 QETH_CARD_TEXT(card, 3, "stbrdcst");
1351 card->info.broadcast_capable = 0;
1352 if (!qeth_is_supported(card, IPA_FILTERING)) {
1353 dev_info(&card->gdev->dev,
1354 "Broadcast not supported on %s\n",
1355 QETH_CARD_IFNAME(card));
1356 rc = -EOPNOTSUPP;
1357 goto out;
1358 }
1359 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1360 IPA_CMD_ASS_START, 0);
1361 if (rc) {
1362 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1363 "%s failed\n", QETH_CARD_IFNAME(card));
1364 goto out;
1365 }
1366
1367 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1368 IPA_CMD_ASS_CONFIGURE, 1);
1369 if (rc) {
1370 dev_warn(&card->gdev->dev,
1371 "Setting up broadcast filtering for %s failed\n",
1372 QETH_CARD_IFNAME(card));
1373 goto out;
1374 }
1375 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1376 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1377 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1378 IPA_CMD_ASS_ENABLE, 1);
1379 if (rc) {
1380 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1381 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1382 goto out;
1383 }
1384 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1385out:
1386 if (card->info.broadcast_capable)
1387 card->dev->flags |= IFF_BROADCAST;
1388 else
1389 card->dev->flags &= ~IFF_BROADCAST;
1390 return rc;
1391}
1392
1393static int qeth_l3_send_checksum_command(struct qeth_card *card)
1394{
1395 int rc;
1396
1397 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1398 IPA_CMD_ASS_START, 0);
1399 if (rc) {
1400 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1401 "failed, using SW checksumming\n",
1402 QETH_CARD_IFNAME(card));
1403 return rc;
1404 }
1405 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1406 IPA_CMD_ASS_ENABLE,
1407 card->info.csum_mask);
1408 if (rc) {
1409 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1410 "failed, using SW checksumming\n",
1411 QETH_CARD_IFNAME(card));
1412 return rc;
1413 }
1414 return 0;
1415}
1416
1417int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1418{
1419 int rc = 0;
1420
1421 if (on) {
1422 rc = qeth_l3_send_checksum_command(card);
1423 if (rc)
1424 return -EIO;
1425 dev_info(&card->gdev->dev,
1426 "HW Checksumming (inbound) enabled\n");
1427 } else {
1428 rc = qeth_l3_send_simple_setassparms(card,
1429 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1430 if (rc)
1431 return -EIO;
1432 }
1433
1434 return 0;
1435}
1436
1437static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1438{
1439 QETH_CARD_TEXT(card, 3, "strtcsum");
1440
1441 if (card->dev->features & NETIF_F_RXCSUM) {
1442 rtnl_lock();
1443 /* force set_features call */
1444 card->dev->features &= ~NETIF_F_RXCSUM;
1445 netdev_update_features(card->dev);
1446 rtnl_unlock();
1447 }
1448 return 0;
1449}
1450
1451static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1452{
1453 int rc = 0;
1454
1455 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1456 return rc;
1457 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1458 IPA_CMD_ASS_START, 0);
1459 if (rc)
1460 goto err_out;
1461 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1462 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1463 if (rc)
1464 goto err_out;
1465 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1466 return rc;
1467err_out:
1468 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1469 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1470 return rc;
1471}
1472
1473static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1474{
1475 int rc;
1476
1477 QETH_CARD_TEXT(card, 3, "sttso");
1478
1479 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1480 dev_info(&card->gdev->dev,
1481 "Outbound TSO not supported on %s\n",
1482 QETH_CARD_IFNAME(card));
1483 rc = -EOPNOTSUPP;
1484 } else {
1485 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1486 IPA_CMD_ASS_START, 0);
1487 if (rc)
1488 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1489 "segmentation offload for %s failed\n",
1490 QETH_CARD_IFNAME(card));
1491 else
1492 dev_info(&card->gdev->dev,
1493 "Outbound TSO enabled\n");
1494 }
1495 if (rc)
1496 card->dev->features &= ~NETIF_F_TSO;
1497 return rc;
1498}
1499
1500static int qeth_l3_start_ipassists(struct qeth_card *card)
1501{
1502 QETH_CARD_TEXT(card, 3, "strtipas");
1503
1504 qeth_set_access_ctrl_online(card); /* go on*/
1505 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1506 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1507 qeth_l3_start_ipa_source_mac(card); /* go on*/
1508 qeth_l3_start_ipa_vlan(card); /* go on*/
1509 qeth_l3_start_ipa_multicast(card); /* go on*/
1510 qeth_l3_start_ipa_ipv6(card); /* go on*/
1511 qeth_l3_start_ipa_broadcast(card); /* go on*/
1512 qeth_l3_start_ipa_checksum(card); /* go on*/
1513 qeth_l3_start_ipa_tx_checksum(card);
1514 qeth_l3_start_ipa_tso(card); /* go on*/
1515 return 0;
1516}
1517
1518static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1519 struct qeth_reply *reply, unsigned long data)
1520{
1521 struct qeth_ipa_cmd *cmd;
1522
1523 cmd = (struct qeth_ipa_cmd *) data;
1524 if (cmd->hdr.return_code == 0)
1525 memcpy(card->dev->dev_addr,
1526 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1527 else
1528 random_ether_addr(card->dev->dev_addr);
1529
1530 return 0;
1531}
1532
1533static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1534{
1535 int rc = 0;
1536 struct qeth_cmd_buffer *iob;
1537 struct qeth_ipa_cmd *cmd;
1538
1539 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1540
1541 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1542 QETH_PROT_IPV6);
1543 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1544 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1545 card->info.unique_id;
1546
1547 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1548 NULL);
1549 return rc;
1550}
1551
1552static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1553 struct qeth_reply *reply, unsigned long data)
1554{
1555 struct qeth_ipa_cmd *cmd;
1556
1557 cmd = (struct qeth_ipa_cmd *) data;
1558 if (cmd->hdr.return_code == 0)
1559 card->info.unique_id = *((__u16 *)
1560 &cmd->data.create_destroy_addr.unique_id[6]);
1561 else {
1562 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1563 UNIQUE_ID_NOT_BY_CARD;
1564 dev_warn(&card->gdev->dev, "The network adapter failed to "
1565 "generate a unique ID\n");
1566 }
1567 return 0;
1568}
1569
1570static int qeth_l3_get_unique_id(struct qeth_card *card)
1571{
1572 int rc = 0;
1573 struct qeth_cmd_buffer *iob;
1574 struct qeth_ipa_cmd *cmd;
1575
1576 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1577
1578 if (!qeth_is_supported(card, IPA_IPV6)) {
1579 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1580 UNIQUE_ID_NOT_BY_CARD;
1581 return 0;
1582 }
1583
1584 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1585 QETH_PROT_IPV6);
1586 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1587 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1588 card->info.unique_id;
1589
1590 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1591 return rc;
1592}
1593
1594static int
1595qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1596 unsigned long data)
1597{
1598 struct qeth_ipa_cmd *cmd;
1599 __u16 rc;
1600
1601 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1602
1603 cmd = (struct qeth_ipa_cmd *)data;
1604 rc = cmd->hdr.return_code;
1605 if (rc)
1606 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1607 switch (cmd->data.diagass.action) {
1608 case QETH_DIAGS_CMD_TRACE_QUERY:
1609 break;
1610 case QETH_DIAGS_CMD_TRACE_DISABLE:
1611 switch (rc) {
1612 case 0:
1613 case IPA_RC_INVALID_SUBCMD:
1614 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1615 dev_info(&card->gdev->dev, "The HiperSockets network "
1616 "traffic analyzer is deactivated\n");
1617 break;
1618 default:
1619 break;
1620 }
1621 break;
1622 case QETH_DIAGS_CMD_TRACE_ENABLE:
1623 switch (rc) {
1624 case 0:
1625 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1626 dev_info(&card->gdev->dev, "The HiperSockets network "
1627 "traffic analyzer is activated\n");
1628 break;
1629 case IPA_RC_HARDWARE_AUTH_ERROR:
1630 dev_warn(&card->gdev->dev, "The device is not "
1631 "authorized to run as a HiperSockets network "
1632 "traffic analyzer\n");
1633 break;
1634 case IPA_RC_TRACE_ALREADY_ACTIVE:
1635 dev_warn(&card->gdev->dev, "A HiperSockets "
1636 "network traffic analyzer is already "
1637 "active in the HiperSockets LAN\n");
1638 break;
1639 default:
1640 break;
1641 }
1642 break;
1643 default:
1644 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1645 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1646 }
1647
1648 return 0;
1649}
1650
1651static int
1652qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1653{
1654 struct qeth_cmd_buffer *iob;
1655 struct qeth_ipa_cmd *cmd;
1656
1657 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1658
1659 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1660 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1661 cmd->data.diagass.subcmd_len = 16;
1662 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1663 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1664 cmd->data.diagass.action = diags_cmd;
1665 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1666}
1667
1668static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1669 struct net_device *dev)
1670{
1671 if (dev->type == ARPHRD_IEEE802_TR)
1672 ip_tr_mc_map(ipm, mac);
1673 else
1674 ip_eth_mc_map(ipm, mac);
1675}
1676
1677static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1678{
1679 struct qeth_ipaddr *ipm;
1680 struct ip_mc_list *im4;
1681 char buf[MAX_ADDR_LEN];
1682
1683 QETH_CARD_TEXT(card, 4, "addmc");
1684 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1685 im4 = rcu_dereference(im4->next_rcu)) {
1686 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1687 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1688 if (!ipm)
1689 continue;
1690 ipm->u.a4.addr = im4->multiaddr;
1691 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1692 ipm->is_multicast = 1;
1693 if (!qeth_l3_add_ip(card, ipm))
1694 kfree(ipm);
1695 }
1696}
1697
1698static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1699{
1700 struct in_device *in_dev;
1701 u16 vid;
1702
1703 QETH_CARD_TEXT(card, 4, "addmcvl");
1704 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1705 return;
1706
1707 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1708 struct net_device *netdev;
1709
1710 rcu_read_lock();
1711 netdev = __vlan_find_dev_deep(card->dev, vid);
1712 rcu_read_unlock();
1713 if (netdev == NULL ||
1714 !(netdev->flags & IFF_UP))
1715 continue;
1716 in_dev = in_dev_get(netdev);
1717 if (!in_dev)
1718 continue;
1719 rcu_read_lock();
1720 qeth_l3_add_mc(card, in_dev);
1721 rcu_read_unlock();
1722 in_dev_put(in_dev);
1723 }
1724}
1725
1726static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1727{
1728 struct in_device *in4_dev;
1729
1730 QETH_CARD_TEXT(card, 4, "chkmcv4");
1731 in4_dev = in_dev_get(card->dev);
1732 if (in4_dev == NULL)
1733 return;
1734 rcu_read_lock();
1735 qeth_l3_add_mc(card, in4_dev);
1736 qeth_l3_add_vlan_mc(card);
1737 rcu_read_unlock();
1738 in_dev_put(in4_dev);
1739}
1740
1741#ifdef CONFIG_QETH_IPV6
1742static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1743{
1744 struct qeth_ipaddr *ipm;
1745 struct ifmcaddr6 *im6;
1746 char buf[MAX_ADDR_LEN];
1747
1748 QETH_CARD_TEXT(card, 4, "addmc6");
1749 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1750 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1751 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1752 if (!ipm)
1753 continue;
1754 ipm->is_multicast = 1;
1755 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1756 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1757 sizeof(struct in6_addr));
1758 if (!qeth_l3_add_ip(card, ipm))
1759 kfree(ipm);
1760 }
1761}
1762
1763static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1764{
1765 struct inet6_dev *in_dev;
1766 u16 vid;
1767
1768 QETH_CARD_TEXT(card, 4, "admc6vl");
1769 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1770 return;
1771
1772 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1773 struct net_device *netdev;
1774
1775 netdev = __vlan_find_dev_deep(card->dev, vid);
1776 if (netdev == NULL ||
1777 !(netdev->flags & IFF_UP))
1778 continue;
1779 in_dev = in6_dev_get(netdev);
1780 if (!in_dev)
1781 continue;
1782 read_lock_bh(&in_dev->lock);
1783 qeth_l3_add_mc6(card, in_dev);
1784 read_unlock_bh(&in_dev->lock);
1785 in6_dev_put(in_dev);
1786 }
1787}
1788
1789static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1790{
1791 struct inet6_dev *in6_dev;
1792
1793 QETH_CARD_TEXT(card, 4, "chkmcv6");
1794 if (!qeth_is_supported(card, IPA_IPV6))
1795 return ;
1796 in6_dev = in6_dev_get(card->dev);
1797 if (in6_dev == NULL)
1798 return;
1799 read_lock_bh(&in6_dev->lock);
1800 qeth_l3_add_mc6(card, in6_dev);
1801 qeth_l3_add_vlan_mc6(card);
1802 read_unlock_bh(&in6_dev->lock);
1803 in6_dev_put(in6_dev);
1804}
1805#endif /* CONFIG_QETH_IPV6 */
1806
1807static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1808 unsigned short vid)
1809{
1810 struct in_device *in_dev;
1811 struct in_ifaddr *ifa;
1812 struct qeth_ipaddr *addr;
1813 struct net_device *netdev;
1814
1815 QETH_CARD_TEXT(card, 4, "frvaddr4");
1816
1817 netdev = __vlan_find_dev_deep(card->dev, vid);
1818 in_dev = in_dev_get(netdev);
1819 if (!in_dev)
1820 return;
1821 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1822 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1823 if (addr) {
1824 addr->u.a4.addr = ifa->ifa_address;
1825 addr->u.a4.mask = ifa->ifa_mask;
1826 addr->type = QETH_IP_TYPE_NORMAL;
1827 if (!qeth_l3_delete_ip(card, addr))
1828 kfree(addr);
1829 }
1830 }
1831 in_dev_put(in_dev);
1832}
1833
1834static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1835 unsigned short vid)
1836{
1837#ifdef CONFIG_QETH_IPV6
1838 struct inet6_dev *in6_dev;
1839 struct inet6_ifaddr *ifa;
1840 struct qeth_ipaddr *addr;
1841 struct net_device *netdev;
1842
1843 QETH_CARD_TEXT(card, 4, "frvaddr6");
1844
1845 netdev = __vlan_find_dev_deep(card->dev, vid);
1846 in6_dev = in6_dev_get(netdev);
1847 if (!in6_dev)
1848 return;
1849 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1850 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1851 if (addr) {
1852 memcpy(&addr->u.a6.addr, &ifa->addr,
1853 sizeof(struct in6_addr));
1854 addr->u.a6.pfxlen = ifa->prefix_len;
1855 addr->type = QETH_IP_TYPE_NORMAL;
1856 if (!qeth_l3_delete_ip(card, addr))
1857 kfree(addr);
1858 }
1859 }
1860 in6_dev_put(in6_dev);
1861#endif /* CONFIG_QETH_IPV6 */
1862}
1863
1864static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1865 unsigned short vid)
1866{
1867 qeth_l3_free_vlan_addresses4(card, vid);
1868 qeth_l3_free_vlan_addresses6(card, vid);
1869}
1870
1871static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1872{
1873 struct qeth_card *card = dev->ml_priv;
1874
1875 set_bit(vid, card->active_vlans);
1876 return;
1877}
1878
1879static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1880{
1881 struct qeth_card *card = dev->ml_priv;
1882 unsigned long flags;
1883
1884 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1885 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1886 QETH_CARD_TEXT(card, 3, "kidREC");
1887 return;
1888 }
1889 spin_lock_irqsave(&card->vlanlock, flags);
1890 /* unregister IP addresses of vlan device */
1891 qeth_l3_free_vlan_addresses(card, vid);
1892 clear_bit(vid, card->active_vlans);
1893 spin_unlock_irqrestore(&card->vlanlock, flags);
1894 qeth_l3_set_multicast_list(card->dev);
1895}
1896
1897static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1898 struct sk_buff *skb, struct qeth_hdr *hdr,
1899 unsigned short *vlan_id)
1900{
1901 __be16 prot;
1902 struct iphdr *ip_hdr;
1903 unsigned char tg_addr[MAX_ADDR_LEN];
1904 int is_vlan = 0;
1905
1906 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1907 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1908 ETH_P_IP);
1909 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1910 case QETH_CAST_MULTICAST:
1911 switch (prot) {
1912#ifdef CONFIG_QETH_IPV6
1913 case __constant_htons(ETH_P_IPV6):
1914 ndisc_mc_map((struct in6_addr *)
1915 skb->data + 24,
1916 tg_addr, card->dev, 0);
1917 break;
1918#endif
1919 case __constant_htons(ETH_P_IP):
1920 ip_hdr = (struct iphdr *)skb->data;
1921 (card->dev->type == ARPHRD_IEEE802_TR) ?
1922 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1923 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1924 break;
1925 default:
1926 memcpy(tg_addr, card->dev->broadcast,
1927 card->dev->addr_len);
1928 }
1929 card->stats.multicast++;
1930 skb->pkt_type = PACKET_MULTICAST;
1931 break;
1932 case QETH_CAST_BROADCAST:
1933 memcpy(tg_addr, card->dev->broadcast,
1934 card->dev->addr_len);
1935 card->stats.multicast++;
1936 skb->pkt_type = PACKET_BROADCAST;
1937 break;
1938 case QETH_CAST_UNICAST:
1939 case QETH_CAST_ANYCAST:
1940 case QETH_CAST_NOCAST:
1941 default:
1942 if (card->options.sniffer)
1943 skb->pkt_type = PACKET_OTHERHOST;
1944 else
1945 skb->pkt_type = PACKET_HOST;
1946 memcpy(tg_addr, card->dev->dev_addr,
1947 card->dev->addr_len);
1948 }
1949 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1950 card->dev->header_ops->create(skb, card->dev, prot,
1951 tg_addr, &hdr->hdr.l3.dest_addr[2],
1952 card->dev->addr_len);
1953 else
1954 card->dev->header_ops->create(skb, card->dev, prot,
1955 tg_addr, "FAKELL", card->dev->addr_len);
1956 }
1957
1958#ifdef CONFIG_TR
1959 if (card->dev->type == ARPHRD_IEEE802_TR)
1960 skb->protocol = tr_type_trans(skb, card->dev);
1961 else
1962#endif
1963 skb->protocol = eth_type_trans(skb, card->dev);
1964
1965 if (hdr->hdr.l3.ext_flags &
1966 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1967 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1968 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1969 is_vlan = 1;
1970 }
1971
1972 if (card->dev->features & NETIF_F_RXCSUM) {
1973 if ((hdr->hdr.l3.ext_flags &
1974 (QETH_HDR_EXT_CSUM_HDR_REQ |
1975 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1976 (QETH_HDR_EXT_CSUM_HDR_REQ |
1977 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1978 skb->ip_summed = CHECKSUM_UNNECESSARY;
1979 else
1980 skb->ip_summed = CHECKSUM_NONE;
1981 } else
1982 skb->ip_summed = CHECKSUM_NONE;
1983
1984 return is_vlan;
1985}
1986
1987static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1988 int budget, int *done)
1989{
1990 int work_done = 0;
1991 struct sk_buff *skb;
1992 struct qeth_hdr *hdr;
1993 __u16 vlan_tag = 0;
1994 int is_vlan;
1995 unsigned int len;
1996
1997 *done = 0;
1998 BUG_ON(!budget);
1999 while (budget) {
2000 skb = qeth_core_get_next_skb(card,
2001 card->qdio.in_q->bufs[card->rx.b_index].buffer,
2002 &card->rx.b_element, &card->rx.e_offset, &hdr);
2003 if (!skb) {
2004 *done = 1;
2005 break;
2006 }
2007 skb->dev = card->dev;
2008 switch (hdr->hdr.l3.id) {
2009 case QETH_HEADER_TYPE_LAYER3:
2010 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2011 &vlan_tag);
2012 len = skb->len;
2013 if (is_vlan && !card->options.sniffer)
2014 __vlan_hwaccel_put_tag(skb, vlan_tag);
2015 napi_gro_receive(&card->napi, skb);
2016 break;
2017 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2018 skb->pkt_type = PACKET_HOST;
2019 skb->protocol = eth_type_trans(skb, skb->dev);
2020 len = skb->len;
2021 netif_receive_skb(skb);
2022 break;
2023 default:
2024 dev_kfree_skb_any(skb);
2025 QETH_CARD_TEXT(card, 3, "inbunkno");
2026 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2027 continue;
2028 }
2029 work_done++;
2030 budget--;
2031 card->stats.rx_packets++;
2032 card->stats.rx_bytes += len;
2033 }
2034 return work_done;
2035}
2036
2037static int qeth_l3_poll(struct napi_struct *napi, int budget)
2038{
2039 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2040 int work_done = 0;
2041 struct qeth_qdio_buffer *buffer;
2042 int done;
2043 int new_budget = budget;
2044
2045 if (card->options.performance_stats) {
2046 card->perf_stats.inbound_cnt++;
2047 card->perf_stats.inbound_start_time = qeth_get_micros();
2048 }
2049
2050 while (1) {
2051 if (!card->rx.b_count) {
2052 card->rx.qdio_err = 0;
2053 card->rx.b_count = qdio_get_next_buffers(
2054 card->data.ccwdev, 0, &card->rx.b_index,
2055 &card->rx.qdio_err);
2056 if (card->rx.b_count <= 0) {
2057 card->rx.b_count = 0;
2058 break;
2059 }
2060 card->rx.b_element =
2061 &card->qdio.in_q->bufs[card->rx.b_index]
2062 .buffer->element[0];
2063 card->rx.e_offset = 0;
2064 }
2065
2066 while (card->rx.b_count) {
2067 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2068 if (!(card->rx.qdio_err &&
2069 qeth_check_qdio_errors(card, buffer->buffer,
2070 card->rx.qdio_err, "qinerr")))
2071 work_done += qeth_l3_process_inbound_buffer(
2072 card, new_budget, &done);
2073 else
2074 done = 1;
2075
2076 if (done) {
2077 if (card->options.performance_stats)
2078 card->perf_stats.bufs_rec++;
2079 qeth_put_buffer_pool_entry(card,
2080 buffer->pool_entry);
2081 qeth_queue_input_buffer(card, card->rx.b_index);
2082 card->rx.b_count--;
2083 if (card->rx.b_count) {
2084 card->rx.b_index =
2085 (card->rx.b_index + 1) %
2086 QDIO_MAX_BUFFERS_PER_Q;
2087 card->rx.b_element =
2088 &card->qdio.in_q
2089 ->bufs[card->rx.b_index]
2090 .buffer->element[0];
2091 card->rx.e_offset = 0;
2092 }
2093 }
2094
2095 if (work_done >= budget)
2096 goto out;
2097 else
2098 new_budget = budget - work_done;
2099 }
2100 }
2101
2102 napi_complete(napi);
2103 if (qdio_start_irq(card->data.ccwdev, 0))
2104 napi_schedule(&card->napi);
2105out:
2106 if (card->options.performance_stats)
2107 card->perf_stats.inbound_time += qeth_get_micros() -
2108 card->perf_stats.inbound_start_time;
2109 return work_done;
2110}
2111
2112static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2113 struct qeth_card *card)
2114{
2115 int rc = 0;
2116 u16 vid;
2117
2118 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2119 struct net_device *netdev;
2120
2121 rcu_read_lock();
2122 netdev = __vlan_find_dev_deep(dev, vid);
2123 rcu_read_unlock();
2124 if (netdev == dev) {
2125 rc = QETH_VLAN_CARD;
2126 break;
2127 }
2128 }
2129
2130 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2131 return 0;
2132
2133 return rc;
2134}
2135
2136static int qeth_l3_verify_dev(struct net_device *dev)
2137{
2138 struct qeth_card *card;
2139 unsigned long flags;
2140 int rc = 0;
2141
2142 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2143 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2144 if (card->dev == dev) {
2145 rc = QETH_REAL_CARD;
2146 break;
2147 }
2148 rc = qeth_l3_verify_vlan_dev(dev, card);
2149 if (rc)
2150 break;
2151 }
2152 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2153
2154 return rc;
2155}
2156
2157static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2158{
2159 struct qeth_card *card = NULL;
2160 int rc;
2161
2162 rc = qeth_l3_verify_dev(dev);
2163 if (rc == QETH_REAL_CARD)
2164 card = dev->ml_priv;
2165 else if (rc == QETH_VLAN_CARD)
2166 card = vlan_dev_real_dev(dev)->ml_priv;
2167 if (card && card->options.layer2)
2168 card = NULL;
2169 if (card)
2170 QETH_CARD_TEXT_(card, 4, "%d", rc);
2171 return card ;
2172}
2173
2174static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2175{
2176 int rc = 0;
2177
2178 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2179 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2180
2181 qeth_set_allowed_threads(card, 0, 1);
2182 if (card->options.sniffer &&
2183 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2184 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2185 if (card->read.state == CH_STATE_UP &&
2186 card->write.state == CH_STATE_UP &&
2187 (card->state == CARD_STATE_UP)) {
2188 if (recovery_mode)
2189 qeth_l3_stop(card->dev);
2190 else {
2191 rtnl_lock();
2192 dev_close(card->dev);
2193 rtnl_unlock();
2194 }
2195 card->state = CARD_STATE_SOFTSETUP;
2196 }
2197 if (card->state == CARD_STATE_SOFTSETUP) {
2198 qeth_l3_clear_ip_list(card, 1);
2199 qeth_clear_ipacmd_list(card);
2200 card->state = CARD_STATE_HARDSETUP;
2201 }
2202 if (card->state == CARD_STATE_HARDSETUP) {
2203 qeth_qdio_clear_card(card, 0);
2204 qeth_clear_qdio_buffers(card);
2205 qeth_clear_working_pool_list(card);
2206 card->state = CARD_STATE_DOWN;
2207 }
2208 if (card->state == CARD_STATE_DOWN) {
2209 qeth_clear_cmd_buffers(&card->read);
2210 qeth_clear_cmd_buffers(&card->write);
2211 }
2212 return rc;
2213}
2214
2215/*
2216 * test for and Switch promiscuous mode (on or off)
2217 * either for guestlan or HiperSocket Sniffer
2218 */
2219static void
2220qeth_l3_handle_promisc_mode(struct qeth_card *card)
2221{
2222 struct net_device *dev = card->dev;
2223
2224 if (((dev->flags & IFF_PROMISC) &&
2225 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2226 (!(dev->flags & IFF_PROMISC) &&
2227 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2228 return;
2229
2230 if (card->info.guestlan) { /* Guestlan trace */
2231 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2232 qeth_setadp_promisc_mode(card);
2233 } else if (card->options.sniffer && /* HiperSockets trace */
2234 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2235 if (dev->flags & IFF_PROMISC) {
2236 QETH_CARD_TEXT(card, 3, "+promisc");
2237 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2238 } else {
2239 QETH_CARD_TEXT(card, 3, "-promisc");
2240 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2241 }
2242 }
2243}
2244
2245static void qeth_l3_set_multicast_list(struct net_device *dev)
2246{
2247 struct qeth_card *card = dev->ml_priv;
2248
2249 QETH_CARD_TEXT(card, 3, "setmulti");
2250 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2251 (card->state != CARD_STATE_UP))
2252 return;
2253 if (!card->options.sniffer) {
2254 qeth_l3_delete_mc_addresses(card);
2255 qeth_l3_add_multicast_ipv4(card);
2256#ifdef CONFIG_QETH_IPV6
2257 qeth_l3_add_multicast_ipv6(card);
2258#endif
2259 qeth_l3_set_ip_addr_list(card);
2260 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2261 return;
2262 }
2263 qeth_l3_handle_promisc_mode(card);
2264}
2265
2266static const char *qeth_l3_arp_get_error_cause(int *rc)
2267{
2268 switch (*rc) {
2269 case QETH_IPA_ARP_RC_FAILED:
2270 *rc = -EIO;
2271 return "operation failed";
2272 case QETH_IPA_ARP_RC_NOTSUPP:
2273 *rc = -EOPNOTSUPP;
2274 return "operation not supported";
2275 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2276 *rc = -EINVAL;
2277 return "argument out of range";
2278 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2279 *rc = -EOPNOTSUPP;
2280 return "query operation not supported";
2281 case QETH_IPA_ARP_RC_Q_NO_DATA:
2282 *rc = -ENOENT;
2283 return "no query data available";
2284 default:
2285 return "unknown error";
2286 }
2287}
2288
2289static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2290{
2291 int tmp;
2292 int rc;
2293
2294 QETH_CARD_TEXT(card, 3, "arpstnoe");
2295
2296 /*
2297 * currently GuestLAN only supports the ARP assist function
2298 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2299 * thus we say EOPNOTSUPP for this ARP function
2300 */
2301 if (card->info.guestlan)
2302 return -EOPNOTSUPP;
2303 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2304 return -EOPNOTSUPP;
2305 }
2306 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2307 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2308 no_entries);
2309 if (rc) {
2310 tmp = rc;
2311 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2312 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2313 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2314 }
2315 return rc;
2316}
2317
2318static __u32 get_arp_entry_size(struct qeth_card *card,
2319 struct qeth_arp_query_data *qdata,
2320 struct qeth_arp_entrytype *type, __u8 strip_entries)
2321{
2322 __u32 rc;
2323 __u8 is_hsi;
2324
2325 is_hsi = qdata->reply_bits == 5;
2326 if (type->ip == QETHARP_IP_ADDR_V4) {
2327 QETH_CARD_TEXT(card, 4, "arpev4");
2328 if (strip_entries) {
2329 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2330 sizeof(struct qeth_arp_qi_entry7_short);
2331 } else {
2332 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2333 sizeof(struct qeth_arp_qi_entry7);
2334 }
2335 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2336 QETH_CARD_TEXT(card, 4, "arpev6");
2337 if (strip_entries) {
2338 rc = is_hsi ?
2339 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2340 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2341 } else {
2342 rc = is_hsi ?
2343 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2344 sizeof(struct qeth_arp_qi_entry7_ipv6);
2345 }
2346 } else {
2347 QETH_CARD_TEXT(card, 4, "arpinv");
2348 rc = 0;
2349 }
2350
2351 return rc;
2352}
2353
2354static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2355{
2356 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2357 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2358}
2359
2360static int qeth_l3_arp_query_cb(struct qeth_card *card,
2361 struct qeth_reply *reply, unsigned long data)
2362{
2363 struct qeth_ipa_cmd *cmd;
2364 struct qeth_arp_query_data *qdata;
2365 struct qeth_arp_query_info *qinfo;
2366 int i;
2367 int e;
2368 int entrybytes_done;
2369 int stripped_bytes;
2370 __u8 do_strip_entries;
2371
2372 QETH_CARD_TEXT(card, 3, "arpquecb");
2373
2374 qinfo = (struct qeth_arp_query_info *) reply->param;
2375 cmd = (struct qeth_ipa_cmd *) data;
2376 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2377 if (cmd->hdr.return_code) {
2378 QETH_CARD_TEXT(card, 4, "arpcberr");
2379 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2380 return 0;
2381 }
2382 if (cmd->data.setassparms.hdr.return_code) {
2383 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2384 QETH_CARD_TEXT(card, 4, "setaperr");
2385 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2386 return 0;
2387 }
2388 qdata = &cmd->data.setassparms.data.query_arp;
2389 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2390
2391 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2392 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2393 entrybytes_done = 0;
2394 for (e = 0; e < qdata->no_entries; ++e) {
2395 char *cur_entry;
2396 __u32 esize;
2397 struct qeth_arp_entrytype *etype;
2398
2399 cur_entry = &qdata->data + entrybytes_done;
2400 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2401 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2402 QETH_CARD_TEXT(card, 4, "pmis");
2403 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2404 break;
2405 }
2406 esize = get_arp_entry_size(card, qdata, etype,
2407 do_strip_entries);
2408 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2409 if (!esize)
2410 break;
2411
2412 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2413 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2414 cmd->hdr.return_code = -ENOMEM;
2415 goto out_error;
2416 }
2417
2418 memcpy(qinfo->udata + qinfo->udata_offset,
2419 &qdata->data + entrybytes_done + stripped_bytes,
2420 esize);
2421 entrybytes_done += esize + stripped_bytes;
2422 qinfo->udata_offset += esize;
2423 ++qinfo->no_entries;
2424 }
2425 /* check if all replies received ... */
2426 if (cmd->data.setassparms.hdr.seq_no <
2427 cmd->data.setassparms.hdr.number_of_replies)
2428 return 1;
2429 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2430 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2431 /* keep STRIP_ENTRIES flag so the user program can distinguish
2432 * stripped entries from normal ones */
2433 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2434 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2435 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2436 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2437 return 0;
2438out_error:
2439 i = 0;
2440 memcpy(qinfo->udata, &i, 4);
2441 return 0;
2442}
2443
2444static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2445 struct qeth_cmd_buffer *iob, int len,
2446 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2447 unsigned long),
2448 void *reply_param)
2449{
2450 QETH_CARD_TEXT(card, 4, "sendarp");
2451
2452 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2453 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2454 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2455 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2456 reply_cb, reply_param);
2457}
2458
2459static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2460 enum qeth_prot_versions prot,
2461 struct qeth_arp_query_info *qinfo)
2462{
2463 struct qeth_cmd_buffer *iob;
2464 struct qeth_ipa_cmd *cmd;
2465 int tmp;
2466 int rc;
2467
2468 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2469
2470 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2471 IPA_CMD_ASS_ARP_QUERY_INFO,
2472 sizeof(struct qeth_arp_query_data) - sizeof(char),
2473 prot);
2474 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2475 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2476 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2477 cmd->data.setassparms.data.query_arp.no_entries = 0;
2478 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2479 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2480 qeth_l3_arp_query_cb, (void *)qinfo);
2481 if (rc) {
2482 tmp = rc;
2483 QETH_DBF_MESSAGE(2,
2484 "Error while querying ARP cache on %s: %s "
2485 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2486 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2487 }
2488
2489 return rc;
2490}
2491
2492static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2493{
2494 struct qeth_arp_query_info qinfo = {0, };
2495 int rc;
2496
2497 QETH_CARD_TEXT(card, 3, "arpquery");
2498
2499 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2500 IPA_ARP_PROCESSING)) {
2501 QETH_CARD_TEXT(card, 3, "arpqnsup");
2502 rc = -EOPNOTSUPP;
2503 goto out;
2504 }
2505 /* get size of userspace buffer and mask_bits -> 6 bytes */
2506 if (copy_from_user(&qinfo, udata, 6)) {
2507 rc = -EFAULT;
2508 goto out;
2509 }
2510 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2511 if (!qinfo.udata) {
2512 rc = -ENOMEM;
2513 goto out;
2514 }
2515 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2516 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2517 if (rc) {
2518 if (copy_to_user(udata, qinfo.udata, 4))
2519 rc = -EFAULT;
2520 goto free_and_out;
2521 } else {
2522#ifdef CONFIG_QETH_IPV6
2523 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2524 /* fails in case of GuestLAN QDIO mode */
2525 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2526 &qinfo);
2527 }
2528#endif
2529 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2530 QETH_CARD_TEXT(card, 4, "qactf");
2531 rc = -EFAULT;
2532 goto free_and_out;
2533 }
2534 QETH_CARD_TEXT_(card, 4, "qacts");
2535 }
2536free_and_out:
2537 kfree(qinfo.udata);
2538out:
2539 return rc;
2540}
2541
2542static int qeth_l3_arp_add_entry(struct qeth_card *card,
2543 struct qeth_arp_cache_entry *entry)
2544{
2545 struct qeth_cmd_buffer *iob;
2546 char buf[16];
2547 int tmp;
2548 int rc;
2549
2550 QETH_CARD_TEXT(card, 3, "arpadent");
2551
2552 /*
2553 * currently GuestLAN only supports the ARP assist function
2554 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2555 * thus we say EOPNOTSUPP for this ARP function
2556 */
2557 if (card->info.guestlan)
2558 return -EOPNOTSUPP;
2559 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2560 return -EOPNOTSUPP;
2561 }
2562
2563 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2564 IPA_CMD_ASS_ARP_ADD_ENTRY,
2565 sizeof(struct qeth_arp_cache_entry),
2566 QETH_PROT_IPV4);
2567 rc = qeth_l3_send_setassparms(card, iob,
2568 sizeof(struct qeth_arp_cache_entry),
2569 (unsigned long) entry,
2570 qeth_l3_default_setassparms_cb, NULL);
2571 if (rc) {
2572 tmp = rc;
2573 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2574 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2575 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2576 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2577 }
2578 return rc;
2579}
2580
2581static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2582 struct qeth_arp_cache_entry *entry)
2583{
2584 struct qeth_cmd_buffer *iob;
2585 char buf[16] = {0, };
2586 int tmp;
2587 int rc;
2588
2589 QETH_CARD_TEXT(card, 3, "arprment");
2590
2591 /*
2592 * currently GuestLAN only supports the ARP assist function
2593 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2594 * thus we say EOPNOTSUPP for this ARP function
2595 */
2596 if (card->info.guestlan)
2597 return -EOPNOTSUPP;
2598 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2599 return -EOPNOTSUPP;
2600 }
2601 memcpy(buf, entry, 12);
2602 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2603 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2604 12,
2605 QETH_PROT_IPV4);
2606 rc = qeth_l3_send_setassparms(card, iob,
2607 12, (unsigned long)buf,
2608 qeth_l3_default_setassparms_cb, NULL);
2609 if (rc) {
2610 tmp = rc;
2611 memset(buf, 0, 16);
2612 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2613 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2614 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2615 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2616 }
2617 return rc;
2618}
2619
2620static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2621{
2622 int rc;
2623 int tmp;
2624
2625 QETH_CARD_TEXT(card, 3, "arpflush");
2626
2627 /*
2628 * currently GuestLAN only supports the ARP assist function
2629 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2630 * thus we say EOPNOTSUPP for this ARP function
2631 */
2632 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2633 return -EOPNOTSUPP;
2634 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2635 return -EOPNOTSUPP;
2636 }
2637 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2638 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2639 if (rc) {
2640 tmp = rc;
2641 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2642 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2643 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2644 }
2645 return rc;
2646}
2647
2648static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2649{
2650 struct qeth_card *card = dev->ml_priv;
2651 struct qeth_arp_cache_entry arp_entry;
2652 struct mii_ioctl_data *mii_data;
2653 int rc = 0;
2654
2655 if (!card)
2656 return -ENODEV;
2657
2658 if ((card->state != CARD_STATE_UP) &&
2659 (card->state != CARD_STATE_SOFTSETUP))
2660 return -ENODEV;
2661
2662 switch (cmd) {
2663 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2664 if (!capable(CAP_NET_ADMIN)) {
2665 rc = -EPERM;
2666 break;
2667 }
2668 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2669 break;
2670 case SIOC_QETH_ARP_QUERY_INFO:
2671 if (!capable(CAP_NET_ADMIN)) {
2672 rc = -EPERM;
2673 break;
2674 }
2675 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2676 break;
2677 case SIOC_QETH_ARP_ADD_ENTRY:
2678 if (!capable(CAP_NET_ADMIN)) {
2679 rc = -EPERM;
2680 break;
2681 }
2682 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2683 sizeof(struct qeth_arp_cache_entry)))
2684 rc = -EFAULT;
2685 else
2686 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2687 break;
2688 case SIOC_QETH_ARP_REMOVE_ENTRY:
2689 if (!capable(CAP_NET_ADMIN)) {
2690 rc = -EPERM;
2691 break;
2692 }
2693 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2694 sizeof(struct qeth_arp_cache_entry)))
2695 rc = -EFAULT;
2696 else
2697 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2698 break;
2699 case SIOC_QETH_ARP_FLUSH_CACHE:
2700 if (!capable(CAP_NET_ADMIN)) {
2701 rc = -EPERM;
2702 break;
2703 }
2704 rc = qeth_l3_arp_flush_cache(card);
2705 break;
2706 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2707 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2708 break;
2709 case SIOC_QETH_GET_CARD_TYPE:
2710 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2711 card->info.type == QETH_CARD_TYPE_OSX) &&
2712 !card->info.guestlan)
2713 return 1;
2714 return 0;
2715 break;
2716 case SIOCGMIIPHY:
2717 mii_data = if_mii(rq);
2718 mii_data->phy_id = 0;
2719 break;
2720 case SIOCGMIIREG:
2721 mii_data = if_mii(rq);
2722 if (mii_data->phy_id != 0)
2723 rc = -EINVAL;
2724 else
2725 mii_data->val_out = qeth_mdio_read(dev,
2726 mii_data->phy_id,
2727 mii_data->reg_num);
2728 break;
2729 default:
2730 rc = -EOPNOTSUPP;
2731 }
2732 if (rc)
2733 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2734 return rc;
2735}
2736
2737int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2738{
2739 int cast_type = RTN_UNSPEC;
2740 struct neighbour *n = NULL;
2741 struct dst_entry *dst;
2742
2743 dst = skb_dst(skb);
2744 if (dst)
2745 n = dst_get_neighbour(dst);
2746 if (n) {
2747 cast_type = n->type;
2748 if ((cast_type == RTN_BROADCAST) ||
2749 (cast_type == RTN_MULTICAST) ||
2750 (cast_type == RTN_ANYCAST))
2751 return cast_type;
2752 else
2753 return RTN_UNSPEC;
2754 }
2755 /* try something else */
2756 if (skb->protocol == ETH_P_IPV6)
2757 return (skb_network_header(skb)[24] == 0xff) ?
2758 RTN_MULTICAST : 0;
2759 else if (skb->protocol == ETH_P_IP)
2760 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2761 RTN_MULTICAST : 0;
2762 /* ... */
2763 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2764 return RTN_BROADCAST;
2765 else {
2766 u16 hdr_mac;
2767
2768 hdr_mac = *((u16 *)skb->data);
2769 /* tr multicast? */
2770 switch (card->info.link_type) {
2771 case QETH_LINK_TYPE_HSTR:
2772 case QETH_LINK_TYPE_LANE_TR:
2773 if ((hdr_mac == QETH_TR_MAC_NC) ||
2774 (hdr_mac == QETH_TR_MAC_C))
2775 return RTN_MULTICAST;
2776 break;
2777 /* eth or so multicast? */
2778 default:
2779 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2780 (hdr_mac == QETH_ETH_MAC_V6))
2781 return RTN_MULTICAST;
2782 }
2783 }
2784 return cast_type;
2785}
2786
2787static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2788 struct sk_buff *skb, int ipv, int cast_type)
2789{
2790 struct neighbour *n = NULL;
2791 struct dst_entry *dst;
2792
2793 memset(hdr, 0, sizeof(struct qeth_hdr));
2794 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2795 hdr->hdr.l3.ext_flags = 0;
2796
2797 /*
2798 * before we're going to overwrite this location with next hop ip.
2799 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2800 */
2801 if (vlan_tx_tag_present(skb)) {
2802 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2803 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2804 else
2805 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2806 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2807 }
2808
2809 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2810 dst = skb_dst(skb);
2811 if (dst)
2812 n = dst_get_neighbour(dst);
2813 if (ipv == 4) {
2814 /* IPv4 */
2815 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2816 memset(hdr->hdr.l3.dest_addr, 0, 12);
2817 if (n) {
2818 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2819 *((u32 *) n->primary_key);
2820 } else {
2821 /* fill in destination address used in ip header */
2822 *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2823 ip_hdr(skb)->daddr;
2824 }
2825 } else if (ipv == 6) {
2826 /* IPv6 */
2827 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2828 if (card->info.type == QETH_CARD_TYPE_IQD)
2829 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2830 if (n) {
2831 memcpy(hdr->hdr.l3.dest_addr,
2832 n->primary_key, 16);
2833 } else {
2834 /* fill in destination address used in ip header */
2835 memcpy(hdr->hdr.l3.dest_addr,
2836 &ipv6_hdr(skb)->daddr, 16);
2837 }
2838 } else {
2839 /* passthrough */
2840 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2841 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2842 sizeof(__u16), skb->dev->broadcast, 6)) {
2843 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2844 QETH_HDR_PASSTHRU;
2845 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2846 skb->dev->broadcast, 6)) {
2847 /* broadcast? */
2848 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2849 QETH_HDR_PASSTHRU;
2850 } else {
2851 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2852 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2853 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2854 }
2855 }
2856}
2857
2858static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2859 struct qeth_hdr *hdr, struct sk_buff *skb)
2860{
2861 struct iphdr *iph = ip_hdr(skb);
2862
2863 /* tcph->check contains already the pseudo hdr checksum
2864 * so just set the header flags
2865 */
2866 if (iph->protocol == IPPROTO_UDP)
2867 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2868 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2869 QETH_HDR_EXT_CSUM_HDR_REQ;
2870 iph->check = 0;
2871 if (card->options.performance_stats)
2872 card->perf_stats.tx_csum++;
2873}
2874
2875static void qeth_tso_fill_header(struct qeth_card *card,
2876 struct qeth_hdr *qhdr, struct sk_buff *skb)
2877{
2878 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2879 struct tcphdr *tcph = tcp_hdr(skb);
2880 struct iphdr *iph = ip_hdr(skb);
2881 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2882
2883 /*fix header to TSO values ...*/
2884 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2885 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2886 /*set values which are fix for the first approach ...*/
2887 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2888 hdr->ext.imb_hdr_no = 1;
2889 hdr->ext.hdr_type = 1;
2890 hdr->ext.hdr_version = 1;
2891 hdr->ext.hdr_len = 28;
2892 /*insert non-fix values */
2893 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2894 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2895 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2896 sizeof(struct qeth_hdr_tso));
2897 tcph->check = 0;
2898 if (skb->protocol == ETH_P_IPV6) {
2899 ip6h->payload_len = 0;
2900 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2901 0, IPPROTO_TCP, 0);
2902 } else {
2903 /*OSA want us to set these values ...*/
2904 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2905 0, IPPROTO_TCP, 0);
2906 iph->tot_len = 0;
2907 iph->check = 0;
2908 }
2909}
2910
2911static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2912{
2913 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2914 tcp_hdr(skb)->doff * 4;
2915 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2916 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2917 elements += skb_shinfo(skb)->nr_frags;
2918 return elements;
2919}
2920
2921static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2922{
2923 int rc;
2924 u16 *tag;
2925 struct qeth_hdr *hdr = NULL;
2926 int elements_needed = 0;
2927 int elems;
2928 struct qeth_card *card = dev->ml_priv;
2929 struct sk_buff *new_skb = NULL;
2930 int ipv = qeth_get_ip_version(skb);
2931 int cast_type = qeth_l3_get_cast_type(card, skb);
2932 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2933 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2934 int tx_bytes = skb->len;
2935 bool large_send;
2936 int data_offset = -1;
2937 int nr_frags;
2938
2939 if (((card->info.type == QETH_CARD_TYPE_IQD) && (!ipv)) ||
2940 card->options.sniffer)
2941 goto tx_drop;
2942
2943 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2944 card->stats.tx_carrier_errors++;
2945 goto tx_drop;
2946 }
2947
2948 if ((cast_type == RTN_BROADCAST) &&
2949 (card->info.broadcast_capable == 0))
2950 goto tx_drop;
2951
2952 if (card->options.performance_stats) {
2953 card->perf_stats.outbound_cnt++;
2954 card->perf_stats.outbound_start_time = qeth_get_micros();
2955 }
2956
2957 large_send = skb_is_gso(skb);
2958
2959 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2960 (skb_shinfo(skb)->nr_frags == 0)) {
2961 new_skb = skb;
2962 data_offset = ETH_HLEN;
2963 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2964 if (!hdr)
2965 goto tx_drop;
2966 elements_needed++;
2967 } else {
2968 /* create a clone with writeable headroom */
2969 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2970 + VLAN_HLEN);
2971 if (!new_skb)
2972 goto tx_drop;
2973 }
2974
2975 if (card->info.type == QETH_CARD_TYPE_IQD) {
2976 if (data_offset < 0)
2977 skb_pull(new_skb, ETH_HLEN);
2978 } else {
2979 if (ipv == 4) {
2980 if (card->dev->type == ARPHRD_IEEE802_TR)
2981 skb_pull(new_skb, TR_HLEN);
2982 else
2983 skb_pull(new_skb, ETH_HLEN);
2984 }
2985
2986 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2987 skb_push(new_skb, VLAN_HLEN);
2988 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2989 skb_copy_to_linear_data_offset(new_skb, 4,
2990 new_skb->data + 8, 4);
2991 skb_copy_to_linear_data_offset(new_skb, 8,
2992 new_skb->data + 12, 4);
2993 tag = (u16 *)(new_skb->data + 12);
2994 *tag = __constant_htons(ETH_P_8021Q);
2995 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2996 new_skb->vlan_tci = 0;
2997 }
2998 }
2999
3000 netif_stop_queue(dev);
3001
3002 /* fix hardware limitation: as long as we do not have sbal
3003 * chaining we can not send long frag lists
3004 */
3005 if (large_send) {
3006 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3007 if (skb_linearize(new_skb))
3008 goto tx_drop;
3009 if (card->options.performance_stats)
3010 card->perf_stats.tx_lin++;
3011 }
3012 }
3013
3014 if (large_send && (cast_type == RTN_UNSPEC)) {
3015 hdr = (struct qeth_hdr *)skb_push(new_skb,
3016 sizeof(struct qeth_hdr_tso));
3017 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3018 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3019 qeth_tso_fill_header(card, hdr, new_skb);
3020 elements_needed++;
3021 } else {
3022 if (data_offset < 0) {
3023 hdr = (struct qeth_hdr *)skb_push(new_skb,
3024 sizeof(struct qeth_hdr));
3025 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3026 cast_type);
3027 } else {
3028 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3029 cast_type);
3030 hdr->hdr.l3.length = new_skb->len - data_offset;
3031 }
3032
3033 if (skb->ip_summed == CHECKSUM_PARTIAL)
3034 qeth_l3_hdr_csum(card, hdr, new_skb);
3035 }
3036
3037 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3038 elements_needed);
3039 if (!elems) {
3040 if (data_offset >= 0)
3041 kmem_cache_free(qeth_core_header_cache, hdr);
3042 goto tx_drop;
3043 }
3044 elements_needed += elems;
3045 nr_frags = skb_shinfo(new_skb)->nr_frags;
3046
3047 if (card->info.type != QETH_CARD_TYPE_IQD) {
3048 int len;
3049 if (large_send)
3050 len = ((unsigned long)tcp_hdr(new_skb) +
3051 tcp_hdr(new_skb)->doff * 4) -
3052 (unsigned long)new_skb->data;
3053 else
3054 len = sizeof(struct qeth_hdr_layer3);
3055
3056 if (qeth_hdr_chk_and_bounce(new_skb, len))
3057 goto tx_drop;
3058 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3059 elements_needed);
3060 } else
3061 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3062 elements_needed, data_offset, 0);
3063
3064 if (!rc) {
3065 card->stats.tx_packets++;
3066 card->stats.tx_bytes += tx_bytes;
3067 if (new_skb != skb)
3068 dev_kfree_skb_any(skb);
3069 if (card->options.performance_stats) {
3070 if (large_send) {
3071 card->perf_stats.large_send_bytes += tx_bytes;
3072 card->perf_stats.large_send_cnt++;
3073 }
3074 if (nr_frags) {
3075 card->perf_stats.sg_skbs_sent++;
3076 /* nr_frags + skb->data */
3077 card->perf_stats.sg_frags_sent += nr_frags + 1;
3078 }
3079 }
3080 rc = NETDEV_TX_OK;
3081 } else {
3082 if (data_offset >= 0)
3083 kmem_cache_free(qeth_core_header_cache, hdr);
3084
3085 if (rc == -EBUSY) {
3086 if (new_skb != skb)
3087 dev_kfree_skb_any(new_skb);
3088 return NETDEV_TX_BUSY;
3089 } else
3090 goto tx_drop;
3091 }
3092
3093 netif_wake_queue(dev);
3094 if (card->options.performance_stats)
3095 card->perf_stats.outbound_time += qeth_get_micros() -
3096 card->perf_stats.outbound_start_time;
3097 return rc;
3098
3099tx_drop:
3100 card->stats.tx_dropped++;
3101 card->stats.tx_errors++;
3102 if ((new_skb != skb) && new_skb)
3103 dev_kfree_skb_any(new_skb);
3104 dev_kfree_skb_any(skb);
3105 netif_wake_queue(dev);
3106 return NETDEV_TX_OK;
3107}
3108
3109static int __qeth_l3_open(struct net_device *dev)
3110{
3111 struct qeth_card *card = dev->ml_priv;
3112 int rc = 0;
3113
3114 QETH_CARD_TEXT(card, 4, "qethopen");
3115 if (card->state == CARD_STATE_UP)
3116 return rc;
3117 if (card->state != CARD_STATE_SOFTSETUP)
3118 return -ENODEV;
3119 card->data.state = CH_STATE_UP;
3120 card->state = CARD_STATE_UP;
3121 netif_start_queue(dev);
3122
3123 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3124 napi_enable(&card->napi);
3125 napi_schedule(&card->napi);
3126 } else
3127 rc = -EIO;
3128 return rc;
3129}
3130
3131static int qeth_l3_open(struct net_device *dev)
3132{
3133 struct qeth_card *card = dev->ml_priv;
3134
3135 QETH_CARD_TEXT(card, 5, "qethope_");
3136 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3137 QETH_CARD_TEXT(card, 3, "openREC");
3138 return -ERESTARTSYS;
3139 }
3140 return __qeth_l3_open(dev);
3141}
3142
3143static int qeth_l3_stop(struct net_device *dev)
3144{
3145 struct qeth_card *card = dev->ml_priv;
3146
3147 QETH_CARD_TEXT(card, 4, "qethstop");
3148 netif_tx_disable(dev);
3149 if (card->state == CARD_STATE_UP) {
3150 card->state = CARD_STATE_SOFTSETUP;
3151 napi_disable(&card->napi);
3152 }
3153 return 0;
3154}
3155
3156static u32 qeth_l3_fix_features(struct net_device *dev, u32 features)
3157{
3158 struct qeth_card *card = dev->ml_priv;
3159
3160 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3161 features &= ~NETIF_F_IP_CSUM;
3162 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3163 features &= ~NETIF_F_TSO;
3164 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3165 features &= ~NETIF_F_RXCSUM;
3166
3167 return features;
3168}
3169
3170static int qeth_l3_set_features(struct net_device *dev, u32 features)
3171{
3172 struct qeth_card *card = dev->ml_priv;
3173 u32 changed = dev->features ^ features;
3174 int err;
3175
3176 if (!(changed & NETIF_F_RXCSUM))
3177 return 0;
3178
3179 if (card->state == CARD_STATE_DOWN ||
3180 card->state == CARD_STATE_RECOVER)
3181 return 0;
3182
3183 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3184 if (err)
3185 dev->features = features ^ NETIF_F_RXCSUM;
3186
3187 return err;
3188}
3189
3190static const struct ethtool_ops qeth_l3_ethtool_ops = {
3191 .get_link = ethtool_op_get_link,
3192 .get_strings = qeth_core_get_strings,
3193 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3194 .get_sset_count = qeth_core_get_sset_count,
3195 .get_drvinfo = qeth_core_get_drvinfo,
3196 .get_settings = qeth_core_ethtool_get_settings,
3197};
3198
3199/*
3200 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3201 * NOARP on the netdevice is no option because it also turns off neighbor
3202 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3203 * arp resolution but we want the hard header (packet socket will work
3204 * e.g. tcpdump)
3205 */
3206static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3207{
3208 n->nud_state = NUD_NOARP;
3209 memcpy(n->ha, "FAKELL", 6);
3210 n->output = n->ops->connected_output;
3211 return 0;
3212}
3213
3214static int
3215qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3216{
3217 if (np->tbl->family == AF_INET)
3218 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3219
3220 return 0;
3221}
3222
3223static const struct net_device_ops qeth_l3_netdev_ops = {
3224 .ndo_open = qeth_l3_open,
3225 .ndo_stop = qeth_l3_stop,
3226 .ndo_get_stats = qeth_get_stats,
3227 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3228 .ndo_validate_addr = eth_validate_addr,
3229 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3230 .ndo_do_ioctl = qeth_l3_do_ioctl,
3231 .ndo_change_mtu = qeth_change_mtu,
3232 .ndo_fix_features = qeth_l3_fix_features,
3233 .ndo_set_features = qeth_l3_set_features,
3234 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3235 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3236 .ndo_tx_timeout = qeth_tx_timeout,
3237};
3238
3239static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3240 .ndo_open = qeth_l3_open,
3241 .ndo_stop = qeth_l3_stop,
3242 .ndo_get_stats = qeth_get_stats,
3243 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3244 .ndo_validate_addr = eth_validate_addr,
3245 .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3246 .ndo_do_ioctl = qeth_l3_do_ioctl,
3247 .ndo_change_mtu = qeth_change_mtu,
3248 .ndo_fix_features = qeth_l3_fix_features,
3249 .ndo_set_features = qeth_l3_set_features,
3250 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3251 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3252 .ndo_tx_timeout = qeth_tx_timeout,
3253 .ndo_neigh_setup = qeth_l3_neigh_setup,
3254};
3255
3256static int qeth_l3_setup_netdev(struct qeth_card *card)
3257{
3258 if (card->info.type == QETH_CARD_TYPE_OSD ||
3259 card->info.type == QETH_CARD_TYPE_OSX) {
3260 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3261 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3262#ifdef CONFIG_TR
3263 card->dev = alloc_trdev(0);
3264#endif
3265 if (!card->dev)
3266 return -ENODEV;
3267 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3268 } else {
3269 card->dev = alloc_etherdev(0);
3270 if (!card->dev)
3271 return -ENODEV;
3272 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3273
3274 /*IPv6 address autoconfiguration stuff*/
3275 qeth_l3_get_unique_id(card);
3276 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3277 card->dev->dev_id = card->info.unique_id &
3278 0xffff;
3279 if (!card->info.guestlan) {
3280 card->dev->hw_features = NETIF_F_SG |
3281 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3282 NETIF_F_TSO;
3283 card->dev->features = NETIF_F_RXCSUM;
3284 }
3285 }
3286 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3287 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3288 if (!card->dev)
3289 return -ENODEV;
3290 card->dev->flags |= IFF_NOARP;
3291 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3292 qeth_l3_iqd_read_initial_mac(card);
3293 } else
3294 return -ENODEV;
3295
3296 card->dev->ml_priv = card;
3297 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3298 card->dev->mtu = card->info.initial_mtu;
3299 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3300 card->dev->features |= NETIF_F_HW_VLAN_TX |
3301 NETIF_F_HW_VLAN_RX |
3302 NETIF_F_HW_VLAN_FILTER;
3303 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3304 card->dev->gso_max_size = 15 * PAGE_SIZE;
3305
3306 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3307 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3308 return register_netdev(card->dev);
3309}
3310
3311static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3312{
3313 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3314
3315 qeth_l3_create_device_attributes(&gdev->dev);
3316 card->options.layer2 = 0;
3317 card->info.hwtrap = 0;
3318 card->discipline.start_poll = qeth_qdio_start_poll;
3319 card->discipline.input_handler = (qdio_handler_t *)
3320 qeth_qdio_input_handler;
3321 card->discipline.output_handler = (qdio_handler_t *)
3322 qeth_qdio_output_handler;
3323 card->discipline.recover = qeth_l3_recover;
3324 return 0;
3325}
3326
3327static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3328{
3329 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3330
3331 qeth_l3_remove_device_attributes(&cgdev->dev);
3332
3333 qeth_set_allowed_threads(card, 0, 1);
3334 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3335
3336 if (cgdev->state == CCWGROUP_ONLINE)
3337 qeth_l3_set_offline(cgdev);
3338
3339 if (card->dev) {
3340 unregister_netdev(card->dev);
3341 card->dev = NULL;
3342 }
3343
3344 qeth_l3_clear_ip_list(card, 0);
3345 qeth_l3_clear_ipato_list(card);
3346 return;
3347}
3348
3349static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3350{
3351 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3352 int rc = 0;
3353 enum qeth_card_states recover_flag;
3354
3355 BUG_ON(!card);
3356 mutex_lock(&card->discipline_mutex);
3357 mutex_lock(&card->conf_mutex);
3358 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3359 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3360
3361 recover_flag = card->state;
3362 rc = qeth_core_hardsetup_card(card);
3363 if (rc) {
3364 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3365 rc = -ENODEV;
3366 goto out_remove;
3367 }
3368
3369 if (!card->dev && qeth_l3_setup_netdev(card)) {
3370 rc = -ENODEV;
3371 goto out_remove;
3372 }
3373
3374 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3375 if (card->info.hwtrap &&
3376 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3377 card->info.hwtrap = 0;
3378 } else
3379 card->info.hwtrap = 0;
3380
3381 card->state = CARD_STATE_HARDSETUP;
3382 memset(&card->rx, 0, sizeof(struct qeth_rx));
3383 qeth_print_status_message(card);
3384
3385 /* softsetup */
3386 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3387
3388 rc = qeth_send_startlan(card);
3389 if (rc) {
3390 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3391 if (rc == 0xe080) {
3392 dev_warn(&card->gdev->dev,
3393 "The LAN is offline\n");
3394 card->lan_online = 0;
3395 goto contin;
3396 }
3397 rc = -ENODEV;
3398 goto out_remove;
3399 } else
3400 card->lan_online = 1;
3401
3402contin:
3403 rc = qeth_l3_setadapter_parms(card);
3404 if (rc)
3405 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3406 if (!card->options.sniffer) {
3407 rc = qeth_l3_start_ipassists(card);
3408 if (rc)
3409 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3410 rc = qeth_l3_setrouting_v4(card);
3411 if (rc)
3412 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3413 rc = qeth_l3_setrouting_v6(card);
3414 if (rc)
3415 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3416 }
3417 netif_tx_disable(card->dev);
3418
3419 rc = qeth_init_qdio_queues(card);
3420 if (rc) {
3421 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3422 rc = -ENODEV;
3423 goto out_remove;
3424 }
3425 card->state = CARD_STATE_SOFTSETUP;
3426
3427 qeth_set_allowed_threads(card, 0xffffffff, 0);
3428 qeth_l3_set_ip_addr_list(card);
3429 if (card->lan_online)
3430 netif_carrier_on(card->dev);
3431 else
3432 netif_carrier_off(card->dev);
3433 if (recover_flag == CARD_STATE_RECOVER) {
3434 if (recovery_mode)
3435 __qeth_l3_open(card->dev);
3436 else {
3437 rtnl_lock();
3438 dev_open(card->dev);
3439 rtnl_unlock();
3440 }
3441 qeth_l3_set_multicast_list(card->dev);
3442 }
3443 /* let user_space know that device is online */
3444 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3445 mutex_unlock(&card->conf_mutex);
3446 mutex_unlock(&card->discipline_mutex);
3447 return 0;
3448out_remove:
3449 qeth_l3_stop_card(card, 0);
3450 ccw_device_set_offline(CARD_DDEV(card));
3451 ccw_device_set_offline(CARD_WDEV(card));
3452 ccw_device_set_offline(CARD_RDEV(card));
3453 if (recover_flag == CARD_STATE_RECOVER)
3454 card->state = CARD_STATE_RECOVER;
3455 else
3456 card->state = CARD_STATE_DOWN;
3457 mutex_unlock(&card->conf_mutex);
3458 mutex_unlock(&card->discipline_mutex);
3459 return rc;
3460}
3461
3462static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3463{
3464 return __qeth_l3_set_online(gdev, 0);
3465}
3466
3467static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3468 int recovery_mode)
3469{
3470 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3471 int rc = 0, rc2 = 0, rc3 = 0;
3472 enum qeth_card_states recover_flag;
3473
3474 mutex_lock(&card->discipline_mutex);
3475 mutex_lock(&card->conf_mutex);
3476 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3477 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3478
3479 if (card->dev && netif_carrier_ok(card->dev))
3480 netif_carrier_off(card->dev);
3481 recover_flag = card->state;
3482 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3483 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3484 card->info.hwtrap = 1;
3485 }
3486 qeth_l3_stop_card(card, recovery_mode);
3487 rc = ccw_device_set_offline(CARD_DDEV(card));
3488 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3489 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3490 if (!rc)
3491 rc = (rc2) ? rc2 : rc3;
3492 if (rc)
3493 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3494 if (recover_flag == CARD_STATE_UP)
3495 card->state = CARD_STATE_RECOVER;
3496 /* let user_space know that device is offline */
3497 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3498 mutex_unlock(&card->conf_mutex);
3499 mutex_unlock(&card->discipline_mutex);
3500 return 0;
3501}
3502
3503static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3504{
3505 return __qeth_l3_set_offline(cgdev, 0);
3506}
3507
3508static int qeth_l3_recover(void *ptr)
3509{
3510 struct qeth_card *card;
3511 int rc = 0;
3512
3513 card = (struct qeth_card *) ptr;
3514 QETH_CARD_TEXT(card, 2, "recover1");
3515 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3516 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3517 return 0;
3518 QETH_CARD_TEXT(card, 2, "recover2");
3519 dev_warn(&card->gdev->dev,
3520 "A recovery process has been started for the device\n");
3521 __qeth_l3_set_offline(card->gdev, 1);
3522 rc = __qeth_l3_set_online(card->gdev, 1);
3523 if (!rc)
3524 dev_info(&card->gdev->dev,
3525 "Device successfully recovered!\n");
3526 else {
3527 rtnl_lock();
3528 dev_close(card->dev);
3529 rtnl_unlock();
3530 dev_warn(&card->gdev->dev, "The qeth device driver "
3531 "failed to recover an error on the device\n");
3532 }
3533 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3534 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3535 return 0;
3536}
3537
3538static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3539{
3540 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3541 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3542 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3543 qeth_qdio_clear_card(card, 0);
3544 qeth_clear_qdio_buffers(card);
3545}
3546
3547static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3548{
3549 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3550
3551 if (card->dev)
3552 netif_device_detach(card->dev);
3553 qeth_set_allowed_threads(card, 0, 1);
3554 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3555 if (gdev->state == CCWGROUP_OFFLINE)
3556 return 0;
3557 if (card->state == CARD_STATE_UP) {
3558 if (card->info.hwtrap)
3559 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3560 __qeth_l3_set_offline(card->gdev, 1);
3561 } else
3562 __qeth_l3_set_offline(card->gdev, 0);
3563 return 0;
3564}
3565
3566static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3567{
3568 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3569 int rc = 0;
3570
3571 if (gdev->state == CCWGROUP_OFFLINE)
3572 goto out;
3573
3574 if (card->state == CARD_STATE_RECOVER) {
3575 rc = __qeth_l3_set_online(card->gdev, 1);
3576 if (rc) {
3577 rtnl_lock();
3578 dev_close(card->dev);
3579 rtnl_unlock();
3580 }
3581 } else
3582 rc = __qeth_l3_set_online(card->gdev, 0);
3583out:
3584 qeth_set_allowed_threads(card, 0xffffffff, 0);
3585 if (card->dev)
3586 netif_device_attach(card->dev);
3587 if (rc)
3588 dev_warn(&card->gdev->dev, "The qeth device driver "
3589 "failed to recover an error on the device\n");
3590 return rc;
3591}
3592
3593struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3594 .probe = qeth_l3_probe_device,
3595 .remove = qeth_l3_remove_device,
3596 .set_online = qeth_l3_set_online,
3597 .set_offline = qeth_l3_set_offline,
3598 .shutdown = qeth_l3_shutdown,
3599 .freeze = qeth_l3_pm_suspend,
3600 .thaw = qeth_l3_pm_resume,
3601 .restore = qeth_l3_pm_resume,
3602};
3603EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3604
3605static int qeth_l3_ip_event(struct notifier_block *this,
3606 unsigned long event, void *ptr)
3607{
3608 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3609 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3610 struct qeth_ipaddr *addr;
3611 struct qeth_card *card;
3612
3613 if (dev_net(dev) != &init_net)
3614 return NOTIFY_DONE;
3615
3616 card = qeth_l3_get_card_from_dev(dev);
3617 QETH_CARD_TEXT(card, 3, "ipevent");
3618 if (!card)
3619 return NOTIFY_DONE;
3620
3621 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3622 if (addr != NULL) {
3623 addr->u.a4.addr = ifa->ifa_address;
3624 addr->u.a4.mask = ifa->ifa_mask;
3625 addr->type = QETH_IP_TYPE_NORMAL;
3626 } else
3627 goto out;
3628
3629 switch (event) {
3630 case NETDEV_UP:
3631 if (!qeth_l3_add_ip(card, addr))
3632 kfree(addr);
3633 break;
3634 case NETDEV_DOWN:
3635 if (!qeth_l3_delete_ip(card, addr))
3636 kfree(addr);
3637 break;
3638 default:
3639 break;
3640 }
3641 qeth_l3_set_ip_addr_list(card);
3642out:
3643 return NOTIFY_DONE;
3644}
3645
3646static struct notifier_block qeth_l3_ip_notifier = {
3647 qeth_l3_ip_event,
3648 NULL,
3649};
3650
3651#ifdef CONFIG_QETH_IPV6
3652/**
3653 * IPv6 event handler
3654 */
3655static int qeth_l3_ip6_event(struct notifier_block *this,
3656 unsigned long event, void *ptr)
3657{
3658 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3659 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3660 struct qeth_ipaddr *addr;
3661 struct qeth_card *card;
3662
3663
3664 card = qeth_l3_get_card_from_dev(dev);
3665 if (!card)
3666 return NOTIFY_DONE;
3667 QETH_CARD_TEXT(card, 3, "ip6event");
3668 if (!qeth_is_supported(card, IPA_IPV6))
3669 return NOTIFY_DONE;
3670
3671 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3672 if (addr != NULL) {
3673 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3674 addr->u.a6.pfxlen = ifa->prefix_len;
3675 addr->type = QETH_IP_TYPE_NORMAL;
3676 } else
3677 goto out;
3678
3679 switch (event) {
3680 case NETDEV_UP:
3681 if (!qeth_l3_add_ip(card, addr))
3682 kfree(addr);
3683 break;
3684 case NETDEV_DOWN:
3685 if (!qeth_l3_delete_ip(card, addr))
3686 kfree(addr);
3687 break;
3688 default:
3689 break;
3690 }
3691 qeth_l3_set_ip_addr_list(card);
3692out:
3693 return NOTIFY_DONE;
3694}
3695
3696static struct notifier_block qeth_l3_ip6_notifier = {
3697 qeth_l3_ip6_event,
3698 NULL,
3699};
3700#endif
3701
3702static int qeth_l3_register_notifiers(void)
3703{
3704 int rc;
3705
3706 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3707 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3708 if (rc)
3709 return rc;
3710#ifdef CONFIG_QETH_IPV6
3711 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3712 if (rc) {
3713 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3714 return rc;
3715 }
3716#else
3717 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3718#endif
3719 return 0;
3720}
3721
3722static void qeth_l3_unregister_notifiers(void)
3723{
3724
3725 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3726 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3727#ifdef CONFIG_QETH_IPV6
3728 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3729#endif /* QETH_IPV6 */
3730}
3731
3732static int __init qeth_l3_init(void)
3733{
3734 int rc = 0;
3735
3736 pr_info("register layer 3 discipline\n");
3737 rc = qeth_l3_register_notifiers();
3738 return rc;
3739}
3740
3741static void __exit qeth_l3_exit(void)
3742{
3743 qeth_l3_unregister_notifiers();
3744 pr_info("unregister layer 3 discipline\n");
3745}
3746
3747module_init(qeth_l3_init);
3748module_exit(qeth_l3_exit);
3749MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3750MODULE_DESCRIPTION("qeth layer 3 discipline");
3751MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/bitops.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
19#include <linux/etherdevice.h>
20#include <linux/ip.h>
21#include <linux/in.h>
22#include <linux/inet.h>
23#include <linux/ipv6.h>
24#include <linux/inetdevice.h>
25#include <linux/igmp.h>
26#include <linux/slab.h>
27#include <linux/if_ether.h>
28#include <linux/if_vlan.h>
29#include <linux/skbuff.h>
30
31#include <net/ip.h>
32#include <net/arp.h>
33#include <net/route.h>
34#include <net/ipv6.h>
35#include <net/ip6_route.h>
36#include <net/iucv/af_iucv.h>
37#include <linux/hashtable.h>
38
39#include "qeth_l3.h"
40
41static int qeth_l3_register_addr_entry(struct qeth_card *,
42 struct qeth_ipaddr *);
43static int qeth_l3_deregister_addr_entry(struct qeth_card *,
44 struct qeth_ipaddr *);
45
46int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,
47 char *buf)
48{
49 if (proto == QETH_PROT_IPV4)
50 return scnprintf(buf, INET_ADDRSTRLEN, "%pI4", addr);
51 else
52 return scnprintf(buf, INET6_ADDRSTRLEN, "%pI6", addr);
53}
54
55static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
56 struct qeth_ipaddr *query)
57{
58 u32 key = qeth_l3_ipaddr_hash(query);
59 struct qeth_ipaddr *addr;
60
61 if (query->is_multicast) {
62 hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key)
63 if (qeth_l3_addr_match_ip(addr, query))
64 return addr;
65 } else {
66 hash_for_each_possible(card->ip_htable, addr, hnode, key)
67 if (qeth_l3_addr_match_ip(addr, query))
68 return addr;
69 }
70 return NULL;
71}
72
73static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
74{
75 int i, j;
76 u8 octet;
77
78 for (i = 0; i < len; ++i) {
79 octet = addr[i];
80 for (j = 7; j >= 0; --j) {
81 bits[i*8 + j] = octet & 1;
82 octet >>= 1;
83 }
84 }
85}
86
87static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
88 struct qeth_ipaddr *addr)
89{
90 struct qeth_ipato_entry *ipatoe;
91 u8 addr_bits[128] = {0, };
92 u8 ipatoe_bits[128] = {0, };
93 int rc = 0;
94
95 if (!card->ipato.enabled)
96 return false;
97 if (addr->type != QETH_IP_TYPE_NORMAL)
98 return false;
99
100 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
101 (addr->proto == QETH_PROT_IPV4) ? 4 : 16);
102 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
103 if (addr->proto != ipatoe->proto)
104 continue;
105 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
106 (ipatoe->proto == QETH_PROT_IPV4) ?
107 4 : 16);
108 rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits);
109 if (rc)
110 break;
111 }
112 /* invert? */
113 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
114 rc = !rc;
115 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
116 rc = !rc;
117
118 return rc;
119}
120
121static int qeth_l3_delete_ip(struct qeth_card *card,
122 struct qeth_ipaddr *tmp_addr)
123{
124 int rc = 0;
125 struct qeth_ipaddr *addr;
126
127 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
128 QETH_CARD_TEXT(card, 2, "delrxip");
129 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
130 QETH_CARD_TEXT(card, 2, "delvipa");
131 else
132 QETH_CARD_TEXT(card, 2, "delip");
133
134 if (tmp_addr->proto == QETH_PROT_IPV4)
135 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
136 else {
137 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
138 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
139 }
140
141 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
142 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
143 return -ENOENT;
144
145 addr->ref_counter--;
146 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
147 return rc;
148
149 if (qeth_card_hw_is_reachable(card))
150 rc = qeth_l3_deregister_addr_entry(card, addr);
151
152 hash_del(&addr->hnode);
153 kfree(addr);
154
155 return rc;
156}
157
158static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
159{
160 int rc = 0;
161 struct qeth_ipaddr *addr;
162 char buf[INET6_ADDRSTRLEN];
163
164 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
165 QETH_CARD_TEXT(card, 2, "addrxip");
166 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
167 QETH_CARD_TEXT(card, 2, "addvipa");
168 else
169 QETH_CARD_TEXT(card, 2, "addip");
170
171 if (tmp_addr->proto == QETH_PROT_IPV4)
172 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
173 else {
174 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
175 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
176 }
177
178 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
179 if (addr) {
180 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
181 return -EADDRINUSE;
182 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
183 addr->ref_counter++;
184 return 0;
185 }
186 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
187 buf);
188 dev_warn(&card->gdev->dev,
189 "Registering IP address %s failed\n", buf);
190 return -EADDRINUSE;
191 } else {
192 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
193 if (!addr)
194 return -ENOMEM;
195
196 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
197 QETH_CARD_TEXT(card, 2, "tkovaddr");
198 addr->ipato = 1;
199 }
200 hash_add(card->ip_htable, &addr->hnode,
201 qeth_l3_ipaddr_hash(addr));
202
203 if (!qeth_card_hw_is_reachable(card)) {
204 addr->disp_flag = QETH_DISP_ADDR_ADD;
205 return 0;
206 }
207
208 rc = qeth_l3_register_addr_entry(card, addr);
209
210 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
211 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
212 } else {
213 hash_del(&addr->hnode);
214 kfree(addr);
215 }
216 }
217 return rc;
218}
219
220static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
221 bool add)
222{
223 int rc;
224
225 mutex_lock(&card->ip_lock);
226 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
227 mutex_unlock(&card->ip_lock);
228
229 return rc;
230}
231
232static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
233{
234 struct qeth_ipaddr *addr;
235 struct hlist_node *tmp;
236 int i;
237
238 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
239 hash_del(&addr->hnode);
240 kfree(addr);
241 }
242}
243
244static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
245{
246 struct qeth_ipaddr *addr;
247 struct hlist_node *tmp;
248 int i;
249
250 QETH_CARD_TEXT(card, 4, "clearip");
251
252 mutex_lock(&card->ip_lock);
253
254 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
255 if (!recover) {
256 hash_del(&addr->hnode);
257 kfree(addr);
258 } else {
259 /* prepare for recovery */
260 addr->disp_flag = QETH_DISP_ADDR_ADD;
261 }
262 }
263
264 mutex_unlock(&card->ip_lock);
265}
266
267static void qeth_l3_recover_ip(struct qeth_card *card)
268{
269 struct qeth_ipaddr *addr;
270 struct hlist_node *tmp;
271 int i;
272 int rc;
273
274 QETH_CARD_TEXT(card, 4, "recovrip");
275
276 mutex_lock(&card->ip_lock);
277
278 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
279 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
280 rc = qeth_l3_register_addr_entry(card, addr);
281
282 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
283 /* keep it in the records */
284 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
285 } else {
286 /* bad address */
287 hash_del(&addr->hnode);
288 kfree(addr);
289 }
290 }
291 }
292
293 mutex_unlock(&card->ip_lock);
294}
295
296static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
297 unsigned long data)
298{
299 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
300
301 switch (cmd->hdr.return_code) {
302 case IPA_RC_SUCCESS:
303 return 0;
304 case IPA_RC_DUPLICATE_IP_ADDRESS:
305 return -EADDRINUSE;
306 case IPA_RC_MC_ADDR_NOT_FOUND:
307 return -ENOENT;
308 case IPA_RC_LAN_OFFLINE:
309 return -ENETDOWN;
310 default:
311 return -EIO;
312 }
313}
314
315static int qeth_l3_send_setdelmc(struct qeth_card *card,
316 struct qeth_ipaddr *addr,
317 enum qeth_ipa_cmds ipacmd)
318{
319 struct qeth_cmd_buffer *iob;
320 struct qeth_ipa_cmd *cmd;
321
322 QETH_CARD_TEXT(card, 4, "setdelmc");
323
324 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
325 IPA_DATA_SIZEOF(setdelipm));
326 if (!iob)
327 return -ENOMEM;
328 cmd = __ipa_cmd(iob);
329 if (addr->proto == QETH_PROT_IPV6) {
330 cmd->data.setdelipm.ip = addr->u.a6.addr;
331 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
332 } else {
333 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
334 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
335 }
336
337 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
338}
339
340static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len)
341{
342 unsigned int i = 0;
343
344 while (len && i < 4) {
345 int mask_len = min_t(int, len, 32);
346
347 prefix->s6_addr32[i] = inet_make_mask(mask_len);
348 len -= mask_len;
349 i++;
350 }
351}
352
353static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
354{
355 switch (addr->type) {
356 case QETH_IP_TYPE_RXIP:
357 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
358 case QETH_IP_TYPE_VIPA:
359 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
360 QETH_IPA_DELIP_VIPA_FLAG;
361 default:
362 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
363 }
364}
365
366static int qeth_l3_send_setdelip(struct qeth_card *card,
367 struct qeth_ipaddr *addr,
368 enum qeth_ipa_cmds ipacmd)
369{
370 struct qeth_cmd_buffer *iob;
371 struct qeth_ipa_cmd *cmd;
372 u32 flags;
373
374 QETH_CARD_TEXT(card, 4, "setdelip");
375
376 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
377 IPA_DATA_SIZEOF(setdelip6));
378 if (!iob)
379 return -ENOMEM;
380 cmd = __ipa_cmd(iob);
381
382 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
383 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
384
385 if (addr->proto == QETH_PROT_IPV6) {
386 cmd->data.setdelip6.addr = addr->u.a6.addr;
387 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix,
388 addr->u.a6.pfxlen);
389 cmd->data.setdelip6.flags = flags;
390 } else {
391 cmd->data.setdelip4.addr = addr->u.a4.addr;
392 cmd->data.setdelip4.mask = addr->u.a4.mask;
393 cmd->data.setdelip4.flags = flags;
394 }
395
396 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
397}
398
399static int qeth_l3_send_setrouting(struct qeth_card *card,
400 enum qeth_routing_types type, enum qeth_prot_versions prot)
401{
402 int rc;
403 struct qeth_ipa_cmd *cmd;
404 struct qeth_cmd_buffer *iob;
405
406 QETH_CARD_TEXT(card, 4, "setroutg");
407 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
408 IPA_DATA_SIZEOF(setrtg));
409 if (!iob)
410 return -ENOMEM;
411 cmd = __ipa_cmd(iob);
412 cmd->data.setrtg.type = (type);
413 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
414
415 return rc;
416}
417
418static int qeth_l3_correct_routing_type(struct qeth_card *card,
419 enum qeth_routing_types *type, enum qeth_prot_versions prot)
420{
421 if (IS_IQD(card)) {
422 switch (*type) {
423 case NO_ROUTER:
424 case PRIMARY_CONNECTOR:
425 case SECONDARY_CONNECTOR:
426 case MULTICAST_ROUTER:
427 return 0;
428 default:
429 goto out_inval;
430 }
431 } else {
432 switch (*type) {
433 case NO_ROUTER:
434 case PRIMARY_ROUTER:
435 case SECONDARY_ROUTER:
436 return 0;
437 case MULTICAST_ROUTER:
438 if (qeth_is_ipafunc_supported(card, prot,
439 IPA_OSA_MC_ROUTER))
440 return 0;
441 goto out_inval;
442 default:
443 goto out_inval;
444 }
445 }
446out_inval:
447 *type = NO_ROUTER;
448 return -EINVAL;
449}
450
451int qeth_l3_setrouting_v4(struct qeth_card *card)
452{
453 int rc;
454
455 QETH_CARD_TEXT(card, 3, "setrtg4");
456
457 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
458 QETH_PROT_IPV4);
459 if (rc)
460 return rc;
461
462 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
463 QETH_PROT_IPV4);
464 if (rc) {
465 card->options.route4.type = NO_ROUTER;
466 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
467 rc, CARD_DEVID(card));
468 }
469 return rc;
470}
471
472int qeth_l3_setrouting_v6(struct qeth_card *card)
473{
474 int rc = 0;
475
476 QETH_CARD_TEXT(card, 3, "setrtg6");
477
478 if (!qeth_is_supported(card, IPA_IPV6))
479 return 0;
480 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
481 QETH_PROT_IPV6);
482 if (rc)
483 return rc;
484
485 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
486 QETH_PROT_IPV6);
487 if (rc) {
488 card->options.route6.type = NO_ROUTER;
489 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
490 rc, CARD_DEVID(card));
491 }
492 return rc;
493}
494
495/*
496 * IP address takeover related functions
497 */
498
499/*
500 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
501 *
502 * Caller must hold ip_lock.
503 */
504void qeth_l3_update_ipato(struct qeth_card *card)
505{
506 struct qeth_ipaddr *addr;
507 unsigned int i;
508
509 hash_for_each(card->ip_htable, i, addr, hnode) {
510 if (addr->type != QETH_IP_TYPE_NORMAL)
511 continue;
512 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
513 }
514}
515
516static void qeth_l3_clear_ipato_list(struct qeth_card *card)
517{
518 struct qeth_ipato_entry *ipatoe, *tmp;
519
520 mutex_lock(&card->ip_lock);
521
522 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
523 list_del(&ipatoe->entry);
524 kfree(ipatoe);
525 }
526
527 qeth_l3_update_ipato(card);
528 mutex_unlock(&card->ip_lock);
529}
530
531int qeth_l3_add_ipato_entry(struct qeth_card *card,
532 struct qeth_ipato_entry *new)
533{
534 struct qeth_ipato_entry *ipatoe;
535 int rc = 0;
536
537 QETH_CARD_TEXT(card, 2, "addipato");
538
539 mutex_lock(&card->ip_lock);
540
541 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
542 if (ipatoe->proto != new->proto)
543 continue;
544 if (!memcmp(ipatoe->addr, new->addr,
545 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) &&
546 (ipatoe->mask_bits == new->mask_bits)) {
547 rc = -EEXIST;
548 break;
549 }
550 }
551
552 if (!rc) {
553 list_add_tail(&new->entry, &card->ipato.entries);
554 qeth_l3_update_ipato(card);
555 }
556
557 mutex_unlock(&card->ip_lock);
558
559 return rc;
560}
561
562int qeth_l3_del_ipato_entry(struct qeth_card *card,
563 enum qeth_prot_versions proto, u8 *addr,
564 unsigned int mask_bits)
565{
566 struct qeth_ipato_entry *ipatoe, *tmp;
567 int rc = -ENOENT;
568
569 QETH_CARD_TEXT(card, 2, "delipato");
570
571 mutex_lock(&card->ip_lock);
572
573 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
574 if (ipatoe->proto != proto)
575 continue;
576 if (!memcmp(ipatoe->addr, addr,
577 (proto == QETH_PROT_IPV4) ? 4 : 16) &&
578 (ipatoe->mask_bits == mask_bits)) {
579 list_del(&ipatoe->entry);
580 qeth_l3_update_ipato(card);
581 kfree(ipatoe);
582 rc = 0;
583 }
584 }
585
586 mutex_unlock(&card->ip_lock);
587
588 return rc;
589}
590
591int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
592 enum qeth_ip_types type,
593 enum qeth_prot_versions proto)
594{
595 struct qeth_ipaddr addr;
596
597 qeth_l3_init_ipaddr(&addr, type, proto);
598 if (proto == QETH_PROT_IPV4)
599 memcpy(&addr.u.a4.addr, ip, 4);
600 else
601 memcpy(&addr.u.a6.addr, ip, 16);
602
603 return qeth_l3_modify_ip(card, &addr, add);
604}
605
606int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
607{
608 struct qeth_ipaddr addr;
609 unsigned int i;
610
611 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
612 addr.u.a6.addr.s6_addr[0] = 0xfe;
613 addr.u.a6.addr.s6_addr[1] = 0x80;
614 for (i = 0; i < 8; i++)
615 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
616
617 return qeth_l3_modify_ip(card, &addr, add);
618}
619
620static int qeth_l3_register_addr_entry(struct qeth_card *card,
621 struct qeth_ipaddr *addr)
622{
623 char buf[50];
624 int rc = 0;
625 int cnt = 3;
626
627 if (card->options.sniffer)
628 return 0;
629
630 if (addr->proto == QETH_PROT_IPV4) {
631 QETH_CARD_TEXT(card, 2, "setaddr4");
632 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
633 } else if (addr->proto == QETH_PROT_IPV6) {
634 QETH_CARD_TEXT(card, 2, "setaddr6");
635 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
636 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
637 } else {
638 QETH_CARD_TEXT(card, 2, "setaddr?");
639 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
640 }
641 do {
642 if (addr->is_multicast)
643 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
644 else
645 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
646 if (rc)
647 QETH_CARD_TEXT(card, 2, "failed");
648 } while ((--cnt > 0) && rc);
649 if (rc) {
650 QETH_CARD_TEXT(card, 2, "FAILED");
651 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
652 dev_warn(&card->gdev->dev,
653 "Registering IP address %s failed\n", buf);
654 }
655 return rc;
656}
657
658static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
659 struct qeth_ipaddr *addr)
660{
661 int rc = 0;
662
663 if (card->options.sniffer)
664 return 0;
665
666 if (addr->proto == QETH_PROT_IPV4) {
667 QETH_CARD_TEXT(card, 2, "deladdr4");
668 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
669 } else if (addr->proto == QETH_PROT_IPV6) {
670 QETH_CARD_TEXT(card, 2, "deladdr6");
671 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
672 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
673 } else {
674 QETH_CARD_TEXT(card, 2, "deladdr?");
675 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
676 }
677 if (addr->is_multicast)
678 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
679 else
680 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
681 if (rc)
682 QETH_CARD_TEXT(card, 2, "failed");
683
684 return rc;
685}
686
687static int qeth_l3_setadapter_parms(struct qeth_card *card)
688{
689 int rc = 0;
690
691 QETH_CARD_TEXT(card, 2, "setadprm");
692
693 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
694 rc = qeth_setadpparms_change_macaddr(card);
695 if (rc)
696 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
697 " address failed\n");
698 }
699
700 return rc;
701}
702
703static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
704{
705 int rc;
706
707 QETH_CARD_TEXT(card, 3, "ipaarp");
708
709 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
710 dev_info(&card->gdev->dev,
711 "ARP processing not supported on %s!\n",
712 netdev_name(card->dev));
713 return 0;
714 }
715 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
716 IPA_CMD_ASS_START, NULL);
717 if (rc) {
718 dev_warn(&card->gdev->dev,
719 "Starting ARP processing support for %s failed\n",
720 netdev_name(card->dev));
721 }
722 return rc;
723}
724
725static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
726{
727 int rc;
728
729 QETH_CARD_TEXT(card, 3, "stsrcmac");
730
731 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
732 dev_info(&card->gdev->dev,
733 "Inbound source MAC-address not supported on %s\n",
734 netdev_name(card->dev));
735 return -EOPNOTSUPP;
736 }
737
738 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
739 IPA_CMD_ASS_START, NULL);
740 if (rc)
741 dev_warn(&card->gdev->dev,
742 "Starting source MAC-address support for %s failed\n",
743 netdev_name(card->dev));
744 return rc;
745}
746
747static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
748{
749 int rc = 0;
750
751 QETH_CARD_TEXT(card, 3, "strtvlan");
752
753 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
754 dev_info(&card->gdev->dev,
755 "VLAN not supported on %s\n", netdev_name(card->dev));
756 return -EOPNOTSUPP;
757 }
758
759 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
760 IPA_CMD_ASS_START, NULL);
761 if (rc) {
762 dev_warn(&card->gdev->dev,
763 "Starting VLAN support for %s failed\n",
764 netdev_name(card->dev));
765 } else {
766 dev_info(&card->gdev->dev, "VLAN enabled\n");
767 }
768 return rc;
769}
770
771static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
772{
773 int rc;
774
775 QETH_CARD_TEXT(card, 3, "stmcast");
776
777 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
778 dev_info(&card->gdev->dev,
779 "Multicast not supported on %s\n",
780 netdev_name(card->dev));
781 return -EOPNOTSUPP;
782 }
783
784 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
785 IPA_CMD_ASS_START, NULL);
786 if (rc) {
787 dev_warn(&card->gdev->dev,
788 "Starting multicast support for %s failed\n",
789 netdev_name(card->dev));
790 } else {
791 dev_info(&card->gdev->dev, "Multicast enabled\n");
792 card->dev->flags |= IFF_MULTICAST;
793 }
794 return rc;
795}
796
797static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
798{
799 u32 ipv6_data = 3;
800 int rc;
801
802 QETH_CARD_TEXT(card, 3, "softipv6");
803
804 if (IS_IQD(card))
805 goto out;
806
807 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
808 &ipv6_data);
809 if (rc) {
810 dev_err(&card->gdev->dev,
811 "Activating IPv6 support for %s failed\n",
812 netdev_name(card->dev));
813 return rc;
814 }
815 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
816 NULL);
817 if (rc) {
818 dev_err(&card->gdev->dev,
819 "Activating IPv6 support for %s failed\n",
820 netdev_name(card->dev));
821 return rc;
822 }
823 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
824 IPA_CMD_ASS_START, NULL);
825 if (rc) {
826 dev_warn(&card->gdev->dev,
827 "Enabling the passthrough mode for %s failed\n",
828 netdev_name(card->dev));
829 return rc;
830 }
831out:
832 dev_info(&card->gdev->dev, "IPV6 enabled\n");
833 return 0;
834}
835
836static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
837{
838 QETH_CARD_TEXT(card, 3, "strtipv6");
839
840 if (!qeth_is_supported(card, IPA_IPV6)) {
841 dev_info(&card->gdev->dev,
842 "IPv6 not supported on %s\n", netdev_name(card->dev));
843 return 0;
844 }
845 return qeth_l3_softsetup_ipv6(card);
846}
847
848static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
849{
850 u32 filter_data = 1;
851 int rc;
852
853 QETH_CARD_TEXT(card, 3, "stbrdcst");
854 card->info.broadcast_capable = 0;
855 if (!qeth_is_supported(card, IPA_FILTERING)) {
856 dev_info(&card->gdev->dev,
857 "Broadcast not supported on %s\n",
858 netdev_name(card->dev));
859 rc = -EOPNOTSUPP;
860 goto out;
861 }
862 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
863 IPA_CMD_ASS_START, NULL);
864 if (rc) {
865 dev_warn(&card->gdev->dev,
866 "Enabling broadcast filtering for %s failed\n",
867 netdev_name(card->dev));
868 goto out;
869 }
870
871 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
872 IPA_CMD_ASS_CONFIGURE, &filter_data);
873 if (rc) {
874 dev_warn(&card->gdev->dev,
875 "Setting up broadcast filtering for %s failed\n",
876 netdev_name(card->dev));
877 goto out;
878 }
879 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
880 dev_info(&card->gdev->dev, "Broadcast enabled\n");
881 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
882 IPA_CMD_ASS_ENABLE, &filter_data);
883 if (rc) {
884 dev_warn(&card->gdev->dev,
885 "Setting up broadcast echo filtering for %s failed\n",
886 netdev_name(card->dev));
887 goto out;
888 }
889 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
890out:
891 if (card->info.broadcast_capable)
892 card->dev->flags |= IFF_BROADCAST;
893 else
894 card->dev->flags &= ~IFF_BROADCAST;
895 return rc;
896}
897
898static void qeth_l3_start_ipassists(struct qeth_card *card)
899{
900 QETH_CARD_TEXT(card, 3, "strtipas");
901
902 qeth_l3_start_ipa_arp_processing(card); /* go on*/
903 qeth_l3_start_ipa_source_mac(card); /* go on*/
904 qeth_l3_start_ipa_vlan(card); /* go on*/
905 qeth_l3_start_ipa_multicast(card); /* go on*/
906 qeth_l3_start_ipa_ipv6(card); /* go on*/
907 qeth_l3_start_ipa_broadcast(card); /* go on*/
908}
909
910static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
911 struct qeth_reply *reply, unsigned long data)
912{
913 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
914
915 if (cmd->hdr.return_code)
916 return -EIO;
917 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
918 return -EADDRNOTAVAIL;
919
920 eth_hw_addr_set(card->dev, cmd->data.create_destroy_addr.mac_addr);
921 return 0;
922}
923
924static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
925{
926 int rc = 0;
927 struct qeth_cmd_buffer *iob;
928
929 QETH_CARD_TEXT(card, 2, "hsrmac");
930
931 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
932 IPA_DATA_SIZEOF(create_destroy_addr));
933 if (!iob)
934 return -ENOMEM;
935
936 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
937 NULL);
938 return rc;
939}
940
941static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
942 struct qeth_reply *reply, unsigned long data)
943{
944 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
945 u16 *uid = reply->param;
946
947 if (cmd->hdr.return_code == 0) {
948 *uid = cmd->data.create_destroy_addr.uid;
949 return 0;
950 }
951
952 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
953 return -EIO;
954}
955
956static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid)
957{
958 struct qeth_cmd_buffer *iob;
959
960 QETH_CARD_TEXT(card, 2, "guniqeid");
961
962 if (!qeth_is_supported(card, IPA_IPV6))
963 goto out;
964
965 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
966 IPA_DATA_SIZEOF(create_destroy_addr));
967 if (!iob)
968 goto out;
969
970 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid;
971 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid);
972
973out:
974 return uid;
975}
976
977static int
978qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
979 unsigned long data)
980{
981 struct qeth_ipa_cmd *cmd;
982 __u16 rc;
983
984 QETH_CARD_TEXT(card, 2, "diastrcb");
985
986 cmd = (struct qeth_ipa_cmd *)data;
987 rc = cmd->hdr.return_code;
988 if (rc)
989 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
990 switch (cmd->data.diagass.action) {
991 case QETH_DIAGS_CMD_TRACE_QUERY:
992 break;
993 case QETH_DIAGS_CMD_TRACE_DISABLE:
994 switch (rc) {
995 case 0:
996 case IPA_RC_INVALID_SUBCMD:
997 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
998 dev_info(&card->gdev->dev, "The HiperSockets network "
999 "traffic analyzer is deactivated\n");
1000 break;
1001 default:
1002 break;
1003 }
1004 break;
1005 case QETH_DIAGS_CMD_TRACE_ENABLE:
1006 switch (rc) {
1007 case 0:
1008 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1009 dev_info(&card->gdev->dev, "The HiperSockets network "
1010 "traffic analyzer is activated\n");
1011 break;
1012 case IPA_RC_HARDWARE_AUTH_ERROR:
1013 dev_warn(&card->gdev->dev, "The device is not "
1014 "authorized to run as a HiperSockets network "
1015 "traffic analyzer\n");
1016 break;
1017 case IPA_RC_TRACE_ALREADY_ACTIVE:
1018 dev_warn(&card->gdev->dev, "A HiperSockets "
1019 "network traffic analyzer is already "
1020 "active in the HiperSockets LAN\n");
1021 break;
1022 default:
1023 break;
1024 }
1025 break;
1026 default:
1027 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1028 cmd->data.diagass.action, CARD_DEVID(card));
1029 }
1030
1031 return rc ? -EIO : 0;
1032}
1033
1034static int
1035qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1036{
1037 struct qeth_cmd_buffer *iob;
1038 struct qeth_ipa_cmd *cmd;
1039
1040 QETH_CARD_TEXT(card, 2, "diagtrac");
1041
1042 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1043 if (!iob)
1044 return -ENOMEM;
1045 cmd = __ipa_cmd(iob);
1046 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1047 cmd->data.diagass.action = diags_cmd;
1048 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1049}
1050
1051static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
1052{
1053 struct qeth_card *card = arg;
1054 struct inet6_dev *in6_dev;
1055 struct in_device *in4_dev;
1056 struct qeth_ipaddr *ipm;
1057 struct qeth_ipaddr tmp;
1058 struct ip_mc_list *im4;
1059 struct ifmcaddr6 *im6;
1060
1061 QETH_CARD_TEXT(card, 4, "addmc");
1062
1063 if (!dev || !(dev->flags & IFF_UP))
1064 goto out;
1065
1066 in4_dev = __in_dev_get_rtnl(dev);
1067 if (!in4_dev)
1068 goto walk_ipv6;
1069
1070 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
1071 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1072 tmp.is_multicast = 1;
1073
1074 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
1075 im4 = rtnl_dereference(im4->next_rcu)) {
1076 tmp.u.a4.addr = im4->multiaddr;
1077
1078 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1079 if (ipm) {
1080 /* for mcast, by-IP match means full match */
1081 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1082 continue;
1083 }
1084
1085 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
1086 if (!ipm)
1087 continue;
1088
1089 hash_add(card->rx_mode_addrs, &ipm->hnode,
1090 qeth_l3_ipaddr_hash(ipm));
1091 }
1092
1093walk_ipv6:
1094 if (!qeth_is_supported(card, IPA_IPV6))
1095 goto out;
1096
1097 in6_dev = __in6_dev_get(dev);
1098 if (!in6_dev)
1099 goto out;
1100
1101 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
1102 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1103 tmp.is_multicast = 1;
1104
1105 for (im6 = rtnl_dereference(in6_dev->mc_list);
1106 im6;
1107 im6 = rtnl_dereference(im6->next)) {
1108 tmp.u.a6.addr = im6->mca_addr;
1109
1110 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1111 if (ipm) {
1112 /* for mcast, by-IP match means full match */
1113 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1114 continue;
1115 }
1116
1117 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
1118 if (!ipm)
1119 continue;
1120
1121 hash_add(card->rx_mode_addrs, &ipm->hnode,
1122 qeth_l3_ipaddr_hash(ipm));
1123
1124 }
1125
1126out:
1127 return 0;
1128}
1129
1130static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1131{
1132 bool enable = card->dev->flags & IFF_PROMISC;
1133
1134 if (card->info.promisc_mode == enable)
1135 return;
1136
1137 if (IS_VM_NIC(card)) { /* Guestlan trace */
1138 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1139 qeth_setadp_promisc_mode(card, enable);
1140 } else if (card->options.sniffer && /* HiperSockets trace */
1141 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1142 if (enable) {
1143 QETH_CARD_TEXT(card, 3, "+promisc");
1144 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1145 } else {
1146 QETH_CARD_TEXT(card, 3, "-promisc");
1147 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1148 }
1149 }
1150}
1151
1152static void qeth_l3_rx_mode_work(struct work_struct *work)
1153{
1154 struct qeth_card *card = container_of(work, struct qeth_card,
1155 rx_mode_work);
1156 struct qeth_ipaddr *addr;
1157 struct hlist_node *tmp;
1158 int i, rc;
1159
1160 QETH_CARD_TEXT(card, 3, "setmulti");
1161
1162 if (!card->options.sniffer) {
1163 rtnl_lock();
1164 qeth_l3_add_mcast_rtnl(card->dev, 0, card);
1165 if (qeth_is_supported(card, IPA_FULL_VLAN))
1166 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
1167 rtnl_unlock();
1168
1169 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
1170 switch (addr->disp_flag) {
1171 case QETH_DISP_ADDR_DELETE:
1172 rc = qeth_l3_deregister_addr_entry(card, addr);
1173 if (!rc || rc == -ENOENT) {
1174 hash_del(&addr->hnode);
1175 kfree(addr);
1176 }
1177 break;
1178 case QETH_DISP_ADDR_ADD:
1179 rc = qeth_l3_register_addr_entry(card, addr);
1180 if (rc && rc != -ENETDOWN) {
1181 hash_del(&addr->hnode);
1182 kfree(addr);
1183 break;
1184 }
1185 fallthrough;
1186 default:
1187 /* for next call to set_rx_mode(): */
1188 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1189 }
1190 }
1191 }
1192
1193 qeth_l3_set_promisc_mode(card);
1194}
1195
1196static int qeth_l3_arp_makerc(u16 rc)
1197{
1198 switch (rc) {
1199 case IPA_RC_SUCCESS:
1200 return 0;
1201 case QETH_IPA_ARP_RC_NOTSUPP:
1202 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1203 return -EOPNOTSUPP;
1204 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1205 return -EINVAL;
1206 case QETH_IPA_ARP_RC_Q_NO_DATA:
1207 return -ENOENT;
1208 default:
1209 return -EIO;
1210 }
1211}
1212
1213static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1214 unsigned long data)
1215{
1216 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1217
1218 qeth_setassparms_cb(card, reply, data);
1219 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1220}
1221
1222static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1223{
1224 struct qeth_cmd_buffer *iob;
1225 int rc;
1226
1227 QETH_CARD_TEXT(card, 3, "arpstnoe");
1228
1229 /*
1230 * currently GuestLAN only supports the ARP assist function
1231 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1232 * thus we say EOPNOTSUPP for this ARP function
1233 */
1234 if (IS_VM_NIC(card))
1235 return -EOPNOTSUPP;
1236 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1237 return -EOPNOTSUPP;
1238 }
1239
1240 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1241 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1242 SETASS_DATA_SIZEOF(flags_32bit),
1243 QETH_PROT_IPV4);
1244 if (!iob)
1245 return -ENOMEM;
1246
1247 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1248 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1249 if (rc)
1250 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1251 CARD_DEVID(card), rc);
1252 return rc;
1253}
1254
1255static __u32 get_arp_entry_size(struct qeth_card *card,
1256 struct qeth_arp_query_data *qdata,
1257 struct qeth_arp_entrytype *type, __u8 strip_entries)
1258{
1259 __u32 rc;
1260 __u8 is_hsi;
1261
1262 is_hsi = qdata->reply_bits == 5;
1263 if (type->ip == QETHARP_IP_ADDR_V4) {
1264 QETH_CARD_TEXT(card, 4, "arpev4");
1265 if (strip_entries) {
1266 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1267 sizeof(struct qeth_arp_qi_entry7_short);
1268 } else {
1269 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1270 sizeof(struct qeth_arp_qi_entry7);
1271 }
1272 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1273 QETH_CARD_TEXT(card, 4, "arpev6");
1274 if (strip_entries) {
1275 rc = is_hsi ?
1276 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1277 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1278 } else {
1279 rc = is_hsi ?
1280 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1281 sizeof(struct qeth_arp_qi_entry7_ipv6);
1282 }
1283 } else {
1284 QETH_CARD_TEXT(card, 4, "arpinv");
1285 rc = 0;
1286 }
1287
1288 return rc;
1289}
1290
1291static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1292{
1293 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1294 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1295}
1296
1297static int qeth_l3_arp_query_cb(struct qeth_card *card,
1298 struct qeth_reply *reply, unsigned long data)
1299{
1300 struct qeth_ipa_cmd *cmd;
1301 struct qeth_arp_query_data *qdata;
1302 struct qeth_arp_query_info *qinfo;
1303 int e;
1304 int entrybytes_done;
1305 int stripped_bytes;
1306 __u8 do_strip_entries;
1307
1308 QETH_CARD_TEXT(card, 3, "arpquecb");
1309
1310 qinfo = (struct qeth_arp_query_info *) reply->param;
1311 cmd = (struct qeth_ipa_cmd *) data;
1312 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1313 if (cmd->hdr.return_code) {
1314 QETH_CARD_TEXT(card, 4, "arpcberr");
1315 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1316 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1317 }
1318 if (cmd->data.setassparms.hdr.return_code) {
1319 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1320 QETH_CARD_TEXT(card, 4, "setaperr");
1321 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1322 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1323 }
1324 qdata = &cmd->data.setassparms.data.query_arp;
1325 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1326
1327 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1328 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1329 entrybytes_done = 0;
1330 for (e = 0; e < qdata->no_entries; ++e) {
1331 char *cur_entry;
1332 __u32 esize;
1333 struct qeth_arp_entrytype *etype;
1334
1335 cur_entry = &qdata->data + entrybytes_done;
1336 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1337 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1338 QETH_CARD_TEXT(card, 4, "pmis");
1339 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1340 break;
1341 }
1342 esize = get_arp_entry_size(card, qdata, etype,
1343 do_strip_entries);
1344 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1345 if (!esize)
1346 break;
1347
1348 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1349 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1350 memset(qinfo->udata, 0, 4);
1351 return -ENOSPC;
1352 }
1353
1354 memcpy(qinfo->udata + qinfo->udata_offset,
1355 &qdata->data + entrybytes_done + stripped_bytes,
1356 esize);
1357 entrybytes_done += esize + stripped_bytes;
1358 qinfo->udata_offset += esize;
1359 ++qinfo->no_entries;
1360 }
1361 /* check if all replies received ... */
1362 if (cmd->data.setassparms.hdr.seq_no <
1363 cmd->data.setassparms.hdr.number_of_replies)
1364 return 1;
1365 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1366 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1367 /* keep STRIP_ENTRIES flag so the user program can distinguish
1368 * stripped entries from normal ones */
1369 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1370 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1371 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1372 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1373 return 0;
1374}
1375
1376static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1377 enum qeth_prot_versions prot,
1378 struct qeth_arp_query_info *qinfo)
1379{
1380 struct qeth_cmd_buffer *iob;
1381 struct qeth_ipa_cmd *cmd;
1382 int rc;
1383
1384 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1385
1386 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1387 IPA_CMD_ASS_ARP_QUERY_INFO,
1388 SETASS_DATA_SIZEOF(query_arp), prot);
1389 if (!iob)
1390 return -ENOMEM;
1391 cmd = __ipa_cmd(iob);
1392 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1393 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1394 if (rc)
1395 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1396 CARD_DEVID(card), rc);
1397 return rc;
1398}
1399
1400static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1401{
1402 struct qeth_arp_query_info qinfo = {0, };
1403 int rc;
1404
1405 QETH_CARD_TEXT(card, 3, "arpquery");
1406
1407 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1408 IPA_ARP_PROCESSING)) {
1409 QETH_CARD_TEXT(card, 3, "arpqnsup");
1410 rc = -EOPNOTSUPP;
1411 goto out;
1412 }
1413 /* get size of userspace buffer and mask_bits -> 6 bytes */
1414 if (copy_from_user(&qinfo, udata, 6)) {
1415 rc = -EFAULT;
1416 goto out;
1417 }
1418 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1419 if (!qinfo.udata) {
1420 rc = -ENOMEM;
1421 goto out;
1422 }
1423 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1424 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1425 if (rc) {
1426 if (copy_to_user(udata, qinfo.udata, 4))
1427 rc = -EFAULT;
1428 goto free_and_out;
1429 }
1430 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1431 /* fails in case of GuestLAN QDIO mode */
1432 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1433 }
1434 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1435 QETH_CARD_TEXT(card, 4, "qactf");
1436 rc = -EFAULT;
1437 goto free_and_out;
1438 }
1439 QETH_CARD_TEXT(card, 4, "qacts");
1440
1441free_and_out:
1442 kfree(qinfo.udata);
1443out:
1444 return rc;
1445}
1446
1447static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1448 struct qeth_arp_cache_entry *entry,
1449 enum qeth_arp_process_subcmds arp_cmd)
1450{
1451 struct qeth_arp_cache_entry *cmd_entry;
1452 struct qeth_cmd_buffer *iob;
1453 int rc;
1454
1455 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1456 QETH_CARD_TEXT(card, 3, "arpadd");
1457 else
1458 QETH_CARD_TEXT(card, 3, "arpdel");
1459
1460 /*
1461 * currently GuestLAN only supports the ARP assist function
1462 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1463 * thus we say EOPNOTSUPP for this ARP function
1464 */
1465 if (IS_VM_NIC(card))
1466 return -EOPNOTSUPP;
1467 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1468 return -EOPNOTSUPP;
1469 }
1470
1471 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1472 SETASS_DATA_SIZEOF(arp_entry),
1473 QETH_PROT_IPV4);
1474 if (!iob)
1475 return -ENOMEM;
1476
1477 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1478 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1479 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1480 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1481 if (rc)
1482 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1483 arp_cmd, CARD_DEVID(card), rc);
1484 return rc;
1485}
1486
1487static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1488{
1489 struct qeth_cmd_buffer *iob;
1490 int rc;
1491
1492 QETH_CARD_TEXT(card, 3, "arpflush");
1493
1494 /*
1495 * currently GuestLAN only supports the ARP assist function
1496 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1497 * thus we say EOPNOTSUPP for this ARP function
1498 */
1499 if (IS_VM_NIC(card) || IS_IQD(card))
1500 return -EOPNOTSUPP;
1501 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1502 return -EOPNOTSUPP;
1503 }
1504
1505 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1506 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1507 QETH_PROT_IPV4);
1508 if (!iob)
1509 return -ENOMEM;
1510
1511 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1512 if (rc)
1513 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1514 CARD_DEVID(card), rc);
1515 return rc;
1516}
1517
1518static int qeth_l3_ndo_siocdevprivate(struct net_device *dev, struct ifreq *rq,
1519 void __user *data, int cmd)
1520{
1521 struct qeth_card *card = dev->ml_priv;
1522 struct qeth_arp_cache_entry arp_entry;
1523 enum qeth_arp_process_subcmds arp_cmd;
1524 int rc = 0;
1525
1526 switch (cmd) {
1527 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1528 if (!capable(CAP_NET_ADMIN)) {
1529 rc = -EPERM;
1530 break;
1531 }
1532 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1533 break;
1534 case SIOC_QETH_ARP_QUERY_INFO:
1535 if (!capable(CAP_NET_ADMIN)) {
1536 rc = -EPERM;
1537 break;
1538 }
1539 rc = qeth_l3_arp_query(card, data);
1540 break;
1541 case SIOC_QETH_ARP_ADD_ENTRY:
1542 case SIOC_QETH_ARP_REMOVE_ENTRY:
1543 if (!capable(CAP_NET_ADMIN))
1544 return -EPERM;
1545 if (copy_from_user(&arp_entry, data, sizeof(arp_entry)))
1546 return -EFAULT;
1547
1548 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1549 IPA_CMD_ASS_ARP_ADD_ENTRY :
1550 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1551 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1552 case SIOC_QETH_ARP_FLUSH_CACHE:
1553 if (!capable(CAP_NET_ADMIN)) {
1554 rc = -EPERM;
1555 break;
1556 }
1557 rc = qeth_l3_arp_flush_cache(card);
1558 break;
1559 default:
1560 rc = qeth_siocdevprivate(dev, rq, data, cmd);
1561 }
1562 return rc;
1563}
1564
1565static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1566 __be16 proto)
1567{
1568 struct neighbour *n = NULL;
1569
1570 if (dst)
1571 n = dst_neigh_lookup_skb(dst, skb);
1572
1573 if (n) {
1574 int cast_type = n->type;
1575
1576 neigh_release(n);
1577 if ((cast_type == RTN_BROADCAST) ||
1578 (cast_type == RTN_MULTICAST) ||
1579 (cast_type == RTN_ANYCAST))
1580 return cast_type;
1581 return RTN_UNICAST;
1582 }
1583
1584 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1585 switch (proto) {
1586 case htons(ETH_P_IP):
1587 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1588 return RTN_BROADCAST;
1589 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1590 RTN_MULTICAST : RTN_UNICAST;
1591 case htons(ETH_P_IPV6):
1592 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1593 RTN_MULTICAST : RTN_UNICAST;
1594 case htons(ETH_P_AF_IUCV):
1595 return RTN_UNICAST;
1596 default:
1597 /* OSA only: ... and MAC address */
1598 return qeth_get_ether_cast_type(skb);
1599 }
1600}
1601
1602static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto)
1603{
1604 struct dst_entry *dst;
1605 int cast_type;
1606
1607 rcu_read_lock();
1608 dst = qeth_dst_check_rcu(skb, proto);
1609 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1610 rcu_read_unlock();
1611
1612 return cast_type;
1613}
1614
1615static u8 qeth_l3_cast_type_to_flag(int cast_type)
1616{
1617 if (cast_type == RTN_MULTICAST)
1618 return QETH_CAST_MULTICAST;
1619 if (cast_type == RTN_ANYCAST)
1620 return QETH_CAST_ANYCAST;
1621 if (cast_type == RTN_BROADCAST)
1622 return QETH_CAST_BROADCAST;
1623 return QETH_CAST_UNICAST;
1624}
1625
1626static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1627 struct qeth_hdr *hdr, struct sk_buff *skb,
1628 __be16 proto, unsigned int data_len)
1629{
1630 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1631 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1632 struct qeth_card *card = queue->card;
1633 struct dst_entry *dst;
1634 int cast_type;
1635
1636 hdr->hdr.l3.length = data_len;
1637
1638 if (skb_is_gso(skb)) {
1639 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1640 } else {
1641 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1642
1643 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1644 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto);
1645 /* some HW requires combined L3+L4 csum offload: */
1646 if (proto == htons(ETH_P_IP))
1647 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1648 }
1649 }
1650
1651 if (proto == htons(ETH_P_IP) || IS_IQD(card)) {
1652 /* NETIF_F_HW_VLAN_CTAG_TX */
1653 if (skb_vlan_tag_present(skb)) {
1654 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1655 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1656 }
1657 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1658 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1659 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1660 }
1661
1662 rcu_read_lock();
1663 dst = qeth_dst_check_rcu(skb, proto);
1664
1665 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1666 cast_type = RTN_UNICAST;
1667 else
1668 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1669 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1670
1671 switch (proto) {
1672 case htons(ETH_P_IP):
1673 l3_hdr->next_hop.addr.s6_addr32[3] =
1674 qeth_next_hop_v4_rcu(skb, dst);
1675 break;
1676 case htons(ETH_P_IPV6):
1677 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
1678
1679 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1680 if (!IS_IQD(card))
1681 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1682 break;
1683 case htons(ETH_P_AF_IUCV):
1684 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
1685 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
1686 iucv_trans_hdr(skb)->destUserID, 8);
1687 l3_hdr->flags |= QETH_HDR_IPV6;
1688 break;
1689 default:
1690 /* OSA only: */
1691 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1692 }
1693 rcu_read_unlock();
1694}
1695
1696static void qeth_l3_fixup_headers(struct sk_buff *skb)
1697{
1698 struct iphdr *iph = ip_hdr(skb);
1699
1700 /* this is safe, IPv6 traffic takes a different path */
1701 if (skb->ip_summed == CHECKSUM_PARTIAL)
1702 iph->check = 0;
1703 if (skb_is_gso(skb)) {
1704 iph->tot_len = 0;
1705 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1706 iph->daddr, 0);
1707 }
1708}
1709
1710static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1711 struct qeth_qdio_out_q *queue, __be16 proto)
1712{
1713 unsigned int hw_hdr_len;
1714 int rc;
1715
1716 /* re-use the L2 header area for the HW header: */
1717 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1718 sizeof(struct qeth_hdr);
1719 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1720 if (rc)
1721 return rc;
1722 skb_pull(skb, ETH_HLEN);
1723
1724 qeth_l3_fixup_headers(skb);
1725 return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1726}
1727
1728static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1729 struct net_device *dev)
1730{
1731 struct qeth_card *card = dev->ml_priv;
1732 __be16 proto = vlan_get_protocol(skb);
1733 u16 txq = skb_get_queue_mapping(skb);
1734 struct qeth_qdio_out_q *queue;
1735 int rc;
1736
1737 if (!skb_is_gso(skb))
1738 qdisc_skb_cb(skb)->pkt_len = skb->len;
1739 if (IS_IQD(card)) {
1740 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1741
1742 if (card->options.sniffer)
1743 goto tx_drop;
1744
1745 switch (proto) {
1746 case htons(ETH_P_AF_IUCV):
1747 if (card->options.cq != QETH_CQ_ENABLED)
1748 goto tx_drop;
1749 break;
1750 case htons(ETH_P_IP):
1751 case htons(ETH_P_IPV6):
1752 if (card->options.cq == QETH_CQ_ENABLED)
1753 goto tx_drop;
1754 break;
1755 default:
1756 goto tx_drop;
1757 }
1758 } else {
1759 queue = card->qdio.out_qs[txq];
1760 }
1761
1762 if (!(dev->flags & IFF_BROADCAST) &&
1763 qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST)
1764 goto tx_drop;
1765
1766 if (proto == htons(ETH_P_IP) || IS_IQD(card))
1767 rc = qeth_l3_xmit(card, skb, queue, proto);
1768 else
1769 rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1770
1771 if (!rc)
1772 return NETDEV_TX_OK;
1773
1774tx_drop:
1775 QETH_TXQ_STAT_INC(queue, tx_dropped);
1776 kfree_skb(skb);
1777 return NETDEV_TX_OK;
1778}
1779
1780static void qeth_l3_set_rx_mode(struct net_device *dev)
1781{
1782 struct qeth_card *card = dev->ml_priv;
1783
1784 schedule_work(&card->rx_mode_work);
1785}
1786
1787/*
1788 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
1789 * NOARP on the netdevice is no option because it also turns off neighbor
1790 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
1791 * arp resolution but we want the hard header (packet socket will work
1792 * e.g. tcpdump)
1793 */
1794static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1795{
1796 n->nud_state = NUD_NOARP;
1797 memcpy(n->ha, "FAKELL", 6);
1798 n->output = n->ops->connected_output;
1799 return 0;
1800}
1801
1802static int
1803qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1804{
1805 if (np->tbl->family == AF_INET)
1806 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1807
1808 return 0;
1809}
1810
1811static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1812 struct net_device *dev,
1813 netdev_features_t features)
1814{
1815 if (vlan_get_protocol(skb) != htons(ETH_P_IP))
1816 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1817 return qeth_features_check(skb, dev, features);
1818}
1819
1820static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1821 struct net_device *sb_dev)
1822{
1823 __be16 proto = vlan_get_protocol(skb);
1824
1825 return qeth_iqd_select_queue(dev, skb,
1826 qeth_l3_get_cast_type(skb, proto), sb_dev);
1827}
1828
1829static const struct net_device_ops qeth_l3_netdev_ops = {
1830 .ndo_open = qeth_open,
1831 .ndo_stop = qeth_stop,
1832 .ndo_get_stats64 = qeth_get_stats64,
1833 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1834 .ndo_select_queue = qeth_l3_iqd_select_queue,
1835 .ndo_validate_addr = eth_validate_addr,
1836 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1837 .ndo_eth_ioctl = qeth_do_ioctl,
1838 .ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate,
1839 .ndo_fix_features = qeth_fix_features,
1840 .ndo_set_features = qeth_set_features,
1841 .ndo_tx_timeout = qeth_tx_timeout,
1842};
1843
1844static const struct net_device_ops qeth_l3_osa_netdev_ops = {
1845 .ndo_open = qeth_open,
1846 .ndo_stop = qeth_stop,
1847 .ndo_get_stats64 = qeth_get_stats64,
1848 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1849 .ndo_features_check = qeth_l3_osa_features_check,
1850 .ndo_select_queue = qeth_osa_select_queue,
1851 .ndo_validate_addr = eth_validate_addr,
1852 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1853 .ndo_eth_ioctl = qeth_do_ioctl,
1854 .ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate,
1855 .ndo_fix_features = qeth_fix_features,
1856 .ndo_set_features = qeth_set_features,
1857 .ndo_tx_timeout = qeth_tx_timeout,
1858 .ndo_neigh_setup = qeth_l3_neigh_setup,
1859};
1860
1861static int qeth_l3_setup_netdev(struct qeth_card *card)
1862{
1863 struct net_device *dev = card->dev;
1864 unsigned int headroom;
1865 int rc;
1866
1867 if (IS_OSD(card) || IS_OSX(card)) {
1868 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
1869
1870 /*IPv6 address autoconfiguration stuff*/
1871 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
1872
1873 if (!IS_VM_NIC(card)) {
1874 card->dev->features |= NETIF_F_SG;
1875 card->dev->hw_features |= NETIF_F_TSO |
1876 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1877 card->dev->vlan_features |= NETIF_F_TSO |
1878 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1879 }
1880
1881 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1882 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1883 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1884 }
1885 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1886 card->dev->hw_features |= NETIF_F_TSO6;
1887 card->dev->vlan_features |= NETIF_F_TSO6;
1888 }
1889
1890 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
1891 if (card->dev->hw_features & NETIF_F_TSO6)
1892 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
1893 else if (card->dev->hw_features & NETIF_F_TSO)
1894 headroom = sizeof(struct qeth_hdr_tso);
1895 else
1896 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
1897 } else if (IS_IQD(card)) {
1898 card->dev->flags |= IFF_NOARP;
1899 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1900 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
1901
1902 rc = qeth_l3_iqd_read_initial_mac(card);
1903 if (rc)
1904 return rc;
1905 } else
1906 return -ENODEV;
1907
1908 card->dev->needed_headroom = headroom;
1909 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1910 NETIF_F_HW_VLAN_CTAG_RX;
1911
1912 netif_keep_dst(card->dev);
1913 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
1914 netif_set_tso_max_size(card->dev,
1915 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
1916
1917 netif_napi_add(card->dev, &card->napi, qeth_poll);
1918 return register_netdev(card->dev);
1919}
1920
1921static const struct device_type qeth_l3_devtype = {
1922 .name = "qeth_layer3",
1923 .groups = qeth_l3_attr_groups,
1924};
1925
1926static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
1927{
1928 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1929 int rc;
1930
1931 hash_init(card->ip_htable);
1932 mutex_init(&card->ip_lock);
1933 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
1934 dev_name(&gdev->dev));
1935 if (!card->cmd_wq)
1936 return -ENOMEM;
1937
1938 if (gdev->dev.type) {
1939 rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups);
1940 if (rc) {
1941 destroy_workqueue(card->cmd_wq);
1942 return rc;
1943 }
1944 } else {
1945 gdev->dev.type = &qeth_l3_devtype;
1946 }
1947
1948 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
1949 return 0;
1950}
1951
1952static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
1953{
1954 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1955
1956 if (cgdev->dev.type != &qeth_l3_devtype)
1957 device_remove_groups(&cgdev->dev, qeth_l3_attr_groups);
1958
1959 qeth_set_allowed_threads(card, 0, 1);
1960 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1961
1962 if (cgdev->state == CCWGROUP_ONLINE)
1963 qeth_set_offline(card, card->discipline, false);
1964
1965 if (card->dev->reg_state == NETREG_REGISTERED)
1966 unregister_netdev(card->dev);
1967
1968 destroy_workqueue(card->cmd_wq);
1969 qeth_l3_clear_ip_htable(card, 0);
1970 qeth_l3_clear_ipato_list(card);
1971}
1972
1973static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok)
1974{
1975 struct net_device *dev = card->dev;
1976 int rc = 0;
1977
1978 /* softsetup */
1979 QETH_CARD_TEXT(card, 2, "softsetp");
1980
1981 rc = qeth_l3_setadapter_parms(card);
1982 if (rc)
1983 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
1984 if (!card->options.sniffer) {
1985 qeth_l3_start_ipassists(card);
1986
1987 rc = qeth_l3_setrouting_v4(card);
1988 if (rc)
1989 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
1990 rc = qeth_l3_setrouting_v6(card);
1991 if (rc)
1992 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
1993 }
1994
1995 card->state = CARD_STATE_SOFTSETUP;
1996
1997 qeth_set_allowed_threads(card, 0xffffffff, 0);
1998 qeth_l3_recover_ip(card);
1999
2000 if (dev->reg_state != NETREG_REGISTERED) {
2001 rc = qeth_l3_setup_netdev(card);
2002 if (rc)
2003 goto err_setup;
2004
2005 if (carrier_ok)
2006 netif_carrier_on(dev);
2007 } else {
2008 rtnl_lock();
2009 rc = qeth_set_real_num_tx_queues(card,
2010 qeth_tx_actual_queues(card));
2011 if (rc) {
2012 rtnl_unlock();
2013 goto err_set_queues;
2014 }
2015
2016 if (carrier_ok)
2017 netif_carrier_on(dev);
2018 else
2019 netif_carrier_off(dev);
2020
2021 netif_device_attach(dev);
2022 qeth_enable_hw_features(dev);
2023
2024 if (netif_running(dev)) {
2025 local_bh_disable();
2026 napi_schedule(&card->napi);
2027 /* kick-start the NAPI softirq: */
2028 local_bh_enable();
2029 }
2030 rtnl_unlock();
2031 }
2032 return 0;
2033
2034err_set_queues:
2035err_setup:
2036 qeth_set_allowed_threads(card, 0, 1);
2037 card->state = CARD_STATE_DOWN;
2038 qeth_l3_clear_ip_htable(card, 1);
2039 return rc;
2040}
2041
2042static void qeth_l3_set_offline(struct qeth_card *card)
2043{
2044 qeth_set_allowed_threads(card, 0, 1);
2045 qeth_l3_drain_rx_mode_cache(card);
2046
2047 if (card->options.sniffer &&
2048 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2049 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2050
2051 if (card->state == CARD_STATE_SOFTSETUP) {
2052 card->state = CARD_STATE_DOWN;
2053 qeth_l3_clear_ip_htable(card, 1);
2054 }
2055}
2056
2057/* Returns zero if the command is successfully "consumed" */
2058static int qeth_l3_control_event(struct qeth_card *card,
2059 struct qeth_ipa_cmd *cmd)
2060{
2061 return 1;
2062}
2063
2064const struct qeth_discipline qeth_l3_discipline = {
2065 .setup = qeth_l3_probe_device,
2066 .remove = qeth_l3_remove_device,
2067 .set_online = qeth_l3_set_online,
2068 .set_offline = qeth_l3_set_offline,
2069 .control_event_handler = qeth_l3_control_event,
2070};
2071EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2072
2073static int qeth_l3_handle_ip_event(struct qeth_card *card,
2074 struct qeth_ipaddr *addr,
2075 unsigned long event)
2076{
2077 switch (event) {
2078 case NETDEV_UP:
2079 qeth_l3_modify_ip(card, addr, true);
2080 return NOTIFY_OK;
2081 case NETDEV_DOWN:
2082 qeth_l3_modify_ip(card, addr, false);
2083 return NOTIFY_OK;
2084 default:
2085 return NOTIFY_DONE;
2086 }
2087}
2088
2089struct qeth_l3_ip_event_work {
2090 struct work_struct work;
2091 struct qeth_card *card;
2092 struct qeth_ipaddr addr;
2093};
2094
2095#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2096
2097static void qeth_l3_add_ip_worker(struct work_struct *work)
2098{
2099 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2100
2101 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2102 kfree(work);
2103}
2104
2105static void qeth_l3_delete_ip_worker(struct work_struct *work)
2106{
2107 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2108
2109 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2110 kfree(work);
2111}
2112
2113static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2114{
2115 if (is_vlan_dev(dev))
2116 dev = vlan_dev_real_dev(dev);
2117 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2118 dev->netdev_ops == &qeth_l3_netdev_ops)
2119 return (struct qeth_card *) dev->ml_priv;
2120 return NULL;
2121}
2122
2123static int qeth_l3_ip_event(struct notifier_block *this,
2124 unsigned long event, void *ptr)
2125{
2126 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2127 struct net_device *dev = ifa->ifa_dev->dev;
2128 struct qeth_ipaddr addr;
2129 struct qeth_card *card;
2130
2131 card = qeth_l3_get_card_from_dev(dev);
2132 if (!card)
2133 return NOTIFY_DONE;
2134 QETH_CARD_TEXT(card, 3, "ipevent");
2135
2136 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2137 addr.u.a4.addr = ifa->ifa_address;
2138 addr.u.a4.mask = ifa->ifa_mask;
2139
2140 return qeth_l3_handle_ip_event(card, &addr, event);
2141}
2142
2143static struct notifier_block qeth_l3_ip_notifier = {
2144 qeth_l3_ip_event,
2145 NULL,
2146};
2147
2148static int qeth_l3_ip6_event(struct notifier_block *this,
2149 unsigned long event, void *ptr)
2150{
2151 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2152 struct net_device *dev = ifa->idev->dev;
2153 struct qeth_l3_ip_event_work *ip_work;
2154 struct qeth_card *card;
2155
2156 if (event != NETDEV_UP && event != NETDEV_DOWN)
2157 return NOTIFY_DONE;
2158
2159 card = qeth_l3_get_card_from_dev(dev);
2160 if (!card)
2161 return NOTIFY_DONE;
2162 QETH_CARD_TEXT(card, 3, "ip6event");
2163 if (!qeth_is_supported(card, IPA_IPV6))
2164 return NOTIFY_DONE;
2165
2166 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2167 if (!ip_work)
2168 return NOTIFY_DONE;
2169
2170 if (event == NETDEV_UP)
2171 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2172 else
2173 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2174
2175 ip_work->card = card;
2176 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2177 QETH_PROT_IPV6);
2178 ip_work->addr.u.a6.addr = ifa->addr;
2179 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2180
2181 queue_work(card->cmd_wq, &ip_work->work);
2182 return NOTIFY_OK;
2183}
2184
2185static struct notifier_block qeth_l3_ip6_notifier = {
2186 qeth_l3_ip6_event,
2187 NULL,
2188};
2189
2190static int qeth_l3_register_notifiers(void)
2191{
2192 int rc;
2193
2194 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2195 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2196 if (rc)
2197 return rc;
2198 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2199 if (rc) {
2200 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2201 return rc;
2202 }
2203 return 0;
2204}
2205
2206static void qeth_l3_unregister_notifiers(void)
2207{
2208 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2209 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2210 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2211}
2212
2213static int __init qeth_l3_init(void)
2214{
2215 pr_info("register layer 3 discipline\n");
2216 return qeth_l3_register_notifiers();
2217}
2218
2219static void __exit qeth_l3_exit(void)
2220{
2221 qeth_l3_unregister_notifiers();
2222 pr_info("unregister layer 3 discipline\n");
2223}
2224
2225module_init(qeth_l3_init);
2226module_exit(qeth_l3_exit);
2227MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2228MODULE_DESCRIPTION("qeth layer 3 discipline");
2229MODULE_LICENSE("GPL");