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dmaengine: imx-sdma: Let the core do the device node validation
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l3_main.c
blob0271833da6a2a42a0c78320318ed3f24f9b0b85f
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/ipv6.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25 #include <linux/slab.h>
26 #include <linux/if_ether.h>
27 #include <linux/if_vlan.h>
28 #include <linux/skbuff.h>
29
30 #include <net/ip.h>
31 #include <net/arp.h>
32 #include <net/route.h>
33 #include <net/ipv6.h>
34 #include <net/ip6_route.h>
35 #include <net/ip6_fib.h>
36 #include <net/iucv/af_iucv.h>
37 #include <linux/hashtable.h>
38
39 #include "qeth_l3.h"
40
41
42 static int qeth_l3_set_offline(struct ccwgroup_device *);
43 static void qeth_l3_set_rx_mode(struct net_device *dev);
44 static int qeth_l3_register_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
48
49 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
50 {
51 sprintf(buf, "%pI4", addr);
52 }
53
54 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
55 {
56 sprintf(buf, "%pI6", addr);
57 }
58
59 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
60 char *buf)
61 {
62 if (proto == QETH_PROT_IPV4)
63 qeth_l3_ipaddr4_to_string(addr, buf);
64 else if (proto == QETH_PROT_IPV6)
65 qeth_l3_ipaddr6_to_string(addr, buf);
66 }
67
68 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
69 {
70 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
71
72 if (addr)
73 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
74 return addr;
75 }
76
77 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
78 struct qeth_ipaddr *query)
79 {
80 u64 key = qeth_l3_ipaddr_hash(query);
81 struct qeth_ipaddr *addr;
82
83 if (query->is_multicast) {
84 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
85 if (qeth_l3_addr_match_ip(addr, query))
86 return addr;
87 } else {
88 hash_for_each_possible(card->ip_htable, addr, hnode, key)
89 if (qeth_l3_addr_match_ip(addr, query))
90 return addr;
91 }
92 return NULL;
93 }
94
95 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
96 {
97 int i, j;
98 u8 octet;
99
100 for (i = 0; i < len; ++i) {
101 octet = addr[i];
102 for (j = 7; j >= 0; --j) {
103 bits[i*8 + j] = octet & 1;
104 octet >>= 1;
105 }
106 }
107 }
108
109 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
110 struct qeth_ipaddr *addr)
111 {
112 struct qeth_ipato_entry *ipatoe;
113 u8 addr_bits[128] = {0, };
114 u8 ipatoe_bits[128] = {0, };
115 int rc = 0;
116
117 if (!card->ipato.enabled)
118 return false;
119 if (addr->type != QETH_IP_TYPE_NORMAL)
120 return false;
121
122 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
123 (addr->proto == QETH_PROT_IPV4)? 4:16);
124 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
125 if (addr->proto != ipatoe->proto)
126 continue;
127 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
128 (ipatoe->proto == QETH_PROT_IPV4) ?
129 4 : 16);
130 if (addr->proto == QETH_PROT_IPV4)
131 rc = !memcmp(addr_bits, ipatoe_bits,
132 min(32, ipatoe->mask_bits));
133 else
134 rc = !memcmp(addr_bits, ipatoe_bits,
135 min(128, ipatoe->mask_bits));
136 if (rc)
137 break;
138 }
139 /* invert? */
140 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
141 rc = !rc;
142 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
143 rc = !rc;
144
145 return rc;
146 }
147
148 static int qeth_l3_delete_ip(struct qeth_card *card,
149 struct qeth_ipaddr *tmp_addr)
150 {
151 int rc = 0;
152 struct qeth_ipaddr *addr;
153
154 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
155 QETH_CARD_TEXT(card, 2, "delrxip");
156 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
157 QETH_CARD_TEXT(card, 2, "delvipa");
158 else
159 QETH_CARD_TEXT(card, 2, "delip");
160
161 if (tmp_addr->proto == QETH_PROT_IPV4)
162 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
163 else {
164 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
165 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
166 }
167
168 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
169 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
170 return -ENOENT;
171
172 addr->ref_counter--;
173 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
174 return rc;
175 if (addr->in_progress)
176 return -EINPROGRESS;
177
178 if (qeth_card_hw_is_reachable(card))
179 rc = qeth_l3_deregister_addr_entry(card, addr);
180
181 hash_del(&addr->hnode);
182 kfree(addr);
183
184 return rc;
185 }
186
187 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
188 {
189 int rc = 0;
190 struct qeth_ipaddr *addr;
191 char buf[40];
192
193 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
194 QETH_CARD_TEXT(card, 2, "addrxip");
195 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
196 QETH_CARD_TEXT(card, 2, "addvipa");
197 else
198 QETH_CARD_TEXT(card, 2, "addip");
199
200 if (tmp_addr->proto == QETH_PROT_IPV4)
201 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
202 else {
203 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
204 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
205 }
206
207 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
208 if (addr) {
209 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
210 return -EADDRINUSE;
211 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
212 addr->ref_counter++;
213 return 0;
214 }
215 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
216 buf);
217 dev_warn(&card->gdev->dev,
218 "Registering IP address %s failed\n", buf);
219 return -EADDRINUSE;
220 } else {
221 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
222 if (!addr)
223 return -ENOMEM;
224
225 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
226 addr->ref_counter = 1;
227
228 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
229 QETH_CARD_TEXT(card, 2, "tkovaddr");
230 addr->ipato = 1;
231 }
232 hash_add(card->ip_htable, &addr->hnode,
233 qeth_l3_ipaddr_hash(addr));
234
235 if (!qeth_card_hw_is_reachable(card)) {
236 addr->disp_flag = QETH_DISP_ADDR_ADD;
237 return 0;
238 }
239
240 /* qeth_l3_register_addr_entry can go to sleep
241 * if we add a IPV4 addr. It is caused by the reason
242 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
243 * Thus we should unlock spinlock, and make a protection
244 * using in_progress variable to indicate that there is
245 * an hardware operation with this IPV4 address
246 */
247 if (addr->proto == QETH_PROT_IPV4) {
248 addr->in_progress = 1;
249 mutex_unlock(&card->ip_lock);
250 rc = qeth_l3_register_addr_entry(card, addr);
251 mutex_lock(&card->ip_lock);
252 addr->in_progress = 0;
253 } else
254 rc = qeth_l3_register_addr_entry(card, addr);
255
256 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
257 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
258 if (addr->ref_counter < 1) {
259 qeth_l3_deregister_addr_entry(card, addr);
260 hash_del(&addr->hnode);
261 kfree(addr);
262 }
263 } else {
264 hash_del(&addr->hnode);
265 kfree(addr);
266 }
267 }
268 return rc;
269 }
270
271 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
272 bool add)
273 {
274 int rc;
275
276 mutex_lock(&card->ip_lock);
277 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
278 mutex_unlock(&card->ip_lock);
279
280 return rc;
281 }
282
283 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
284 {
285 struct qeth_ipaddr *addr;
286 struct hlist_node *tmp;
287 int i;
288
289 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
290 hash_del(&addr->hnode);
291 kfree(addr);
292 }
293 }
294
295 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
296 {
297 struct qeth_ipaddr *addr;
298 struct hlist_node *tmp;
299 int i;
300
301 QETH_CARD_TEXT(card, 4, "clearip");
302
303 mutex_lock(&card->ip_lock);
304
305 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
306 if (!recover) {
307 hash_del(&addr->hnode);
308 kfree(addr);
309 continue;
310 }
311 addr->disp_flag = QETH_DISP_ADDR_ADD;
312 }
313
314 mutex_unlock(&card->ip_lock);
315 }
316
317 static void qeth_l3_recover_ip(struct qeth_card *card)
318 {
319 struct qeth_ipaddr *addr;
320 struct hlist_node *tmp;
321 int i;
322 int rc;
323
324 QETH_CARD_TEXT(card, 4, "recovrip");
325
326 mutex_lock(&card->ip_lock);
327
328 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
329 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
330 if (addr->proto == QETH_PROT_IPV4) {
331 addr->in_progress = 1;
332 mutex_unlock(&card->ip_lock);
333 rc = qeth_l3_register_addr_entry(card, addr);
334 mutex_lock(&card->ip_lock);
335 addr->in_progress = 0;
336 } else
337 rc = qeth_l3_register_addr_entry(card, addr);
338
339 if (!rc) {
340 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
341 if (addr->ref_counter < 1)
342 qeth_l3_delete_ip(card, addr);
343 } else {
344 hash_del(&addr->hnode);
345 kfree(addr);
346 }
347 }
348 }
349
350 mutex_unlock(&card->ip_lock);
351 }
352
353 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
354 unsigned long data)
355 {
356 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
357
358 switch (cmd->hdr.return_code) {
359 case IPA_RC_SUCCESS:
360 return 0;
361 case IPA_RC_DUPLICATE_IP_ADDRESS:
362 return -EADDRINUSE;
363 case IPA_RC_MC_ADDR_NOT_FOUND:
364 return -ENOENT;
365 case IPA_RC_LAN_OFFLINE:
366 return -ENETDOWN;
367 default:
368 return -EIO;
369 }
370 }
371
372 static int qeth_l3_send_setdelmc(struct qeth_card *card,
373 struct qeth_ipaddr *addr, int ipacmd)
374 {
375 struct qeth_cmd_buffer *iob;
376 struct qeth_ipa_cmd *cmd;
377
378 QETH_CARD_TEXT(card, 4, "setdelmc");
379
380 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
381 if (!iob)
382 return -ENOMEM;
383 cmd = __ipa_cmd(iob);
384 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
385 if (addr->proto == QETH_PROT_IPV6)
386 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
387 sizeof(struct in6_addr));
388 else
389 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
390
391 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
392 }
393
394 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
395 {
396 int i, j;
397 for (i = 0; i < 16; i++) {
398 j = (len) - (i * 8);
399 if (j >= 8)
400 netmask[i] = 0xff;
401 else if (j > 0)
402 netmask[i] = (u8)(0xFF00 >> j);
403 else
404 netmask[i] = 0;
405 }
406 }
407
408 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
409 {
410 switch (addr->type) {
411 case QETH_IP_TYPE_RXIP:
412 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
413 case QETH_IP_TYPE_VIPA:
414 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
415 QETH_IPA_DELIP_VIPA_FLAG;
416 default:
417 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
418 }
419 }
420
421 static int qeth_l3_send_setdelip(struct qeth_card *card,
422 struct qeth_ipaddr *addr,
423 enum qeth_ipa_cmds ipacmd)
424 {
425 struct qeth_cmd_buffer *iob;
426 struct qeth_ipa_cmd *cmd;
427 __u8 netmask[16];
428 u32 flags;
429
430 QETH_CARD_TEXT(card, 4, "setdelip");
431
432 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
433 if (!iob)
434 return -ENOMEM;
435 cmd = __ipa_cmd(iob);
436
437 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
438 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
439
440 if (addr->proto == QETH_PROT_IPV6) {
441 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
442 sizeof(struct in6_addr));
443 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
444 memcpy(cmd->data.setdelip6.mask, netmask,
445 sizeof(struct in6_addr));
446 cmd->data.setdelip6.flags = flags;
447 } else {
448 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
449 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
450 cmd->data.setdelip4.flags = flags;
451 }
452
453 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
454 }
455
456 static int qeth_l3_send_setrouting(struct qeth_card *card,
457 enum qeth_routing_types type, enum qeth_prot_versions prot)
458 {
459 int rc;
460 struct qeth_ipa_cmd *cmd;
461 struct qeth_cmd_buffer *iob;
462
463 QETH_CARD_TEXT(card, 4, "setroutg");
464 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
465 if (!iob)
466 return -ENOMEM;
467 cmd = __ipa_cmd(iob);
468 cmd->data.setrtg.type = (type);
469 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
470
471 return rc;
472 }
473
474 static int qeth_l3_correct_routing_type(struct qeth_card *card,
475 enum qeth_routing_types *type, enum qeth_prot_versions prot)
476 {
477 if (IS_IQD(card)) {
478 switch (*type) {
479 case NO_ROUTER:
480 case PRIMARY_CONNECTOR:
481 case SECONDARY_CONNECTOR:
482 case MULTICAST_ROUTER:
483 return 0;
484 default:
485 goto out_inval;
486 }
487 } else {
488 switch (*type) {
489 case NO_ROUTER:
490 case PRIMARY_ROUTER:
491 case SECONDARY_ROUTER:
492 return 0;
493 case MULTICAST_ROUTER:
494 if (qeth_is_ipafunc_supported(card, prot,
495 IPA_OSA_MC_ROUTER))
496 return 0;
497 default:
498 goto out_inval;
499 }
500 }
501 out_inval:
502 *type = NO_ROUTER;
503 return -EINVAL;
504 }
505
506 int qeth_l3_setrouting_v4(struct qeth_card *card)
507 {
508 int rc;
509
510 QETH_CARD_TEXT(card, 3, "setrtg4");
511
512 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
513 QETH_PROT_IPV4);
514 if (rc)
515 return rc;
516
517 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
518 QETH_PROT_IPV4);
519 if (rc) {
520 card->options.route4.type = NO_ROUTER;
521 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
522 rc, CARD_DEVID(card));
523 }
524 return rc;
525 }
526
527 int qeth_l3_setrouting_v6(struct qeth_card *card)
528 {
529 int rc = 0;
530
531 QETH_CARD_TEXT(card, 3, "setrtg6");
532
533 if (!qeth_is_supported(card, IPA_IPV6))
534 return 0;
535 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
536 QETH_PROT_IPV6);
537 if (rc)
538 return rc;
539
540 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
541 QETH_PROT_IPV6);
542 if (rc) {
543 card->options.route6.type = NO_ROUTER;
544 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
545 rc, CARD_DEVID(card));
546 }
547 return rc;
548 }
549
550 /*
551 * IP address takeover related functions
552 */
553
554 /**
555 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
556 *
557 * Caller must hold ip_lock.
558 */
559 void qeth_l3_update_ipato(struct qeth_card *card)
560 {
561 struct qeth_ipaddr *addr;
562 unsigned int i;
563
564 hash_for_each(card->ip_htable, i, addr, hnode) {
565 if (addr->type != QETH_IP_TYPE_NORMAL)
566 continue;
567 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
568 }
569 }
570
571 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
572 {
573 struct qeth_ipato_entry *ipatoe, *tmp;
574
575 mutex_lock(&card->ip_lock);
576
577 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
578 list_del(&ipatoe->entry);
579 kfree(ipatoe);
580 }
581
582 qeth_l3_update_ipato(card);
583 mutex_unlock(&card->ip_lock);
584 }
585
586 int qeth_l3_add_ipato_entry(struct qeth_card *card,
587 struct qeth_ipato_entry *new)
588 {
589 struct qeth_ipato_entry *ipatoe;
590 int rc = 0;
591
592 QETH_CARD_TEXT(card, 2, "addipato");
593
594 mutex_lock(&card->ip_lock);
595
596 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
597 if (ipatoe->proto != new->proto)
598 continue;
599 if (!memcmp(ipatoe->addr, new->addr,
600 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
601 (ipatoe->mask_bits == new->mask_bits)) {
602 rc = -EEXIST;
603 break;
604 }
605 }
606
607 if (!rc) {
608 list_add_tail(&new->entry, &card->ipato.entries);
609 qeth_l3_update_ipato(card);
610 }
611
612 mutex_unlock(&card->ip_lock);
613
614 return rc;
615 }
616
617 int qeth_l3_del_ipato_entry(struct qeth_card *card,
618 enum qeth_prot_versions proto, u8 *addr,
619 int mask_bits)
620 {
621 struct qeth_ipato_entry *ipatoe, *tmp;
622 int rc = -ENOENT;
623
624 QETH_CARD_TEXT(card, 2, "delipato");
625
626 mutex_lock(&card->ip_lock);
627
628 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
629 if (ipatoe->proto != proto)
630 continue;
631 if (!memcmp(ipatoe->addr, addr,
632 (proto == QETH_PROT_IPV4)? 4:16) &&
633 (ipatoe->mask_bits == mask_bits)) {
634 list_del(&ipatoe->entry);
635 qeth_l3_update_ipato(card);
636 kfree(ipatoe);
637 rc = 0;
638 }
639 }
640
641 mutex_unlock(&card->ip_lock);
642 return rc;
643 }
644
645 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
646 enum qeth_ip_types type,
647 enum qeth_prot_versions proto)
648 {
649 struct qeth_ipaddr addr;
650
651 qeth_l3_init_ipaddr(&addr, type, proto);
652 if (proto == QETH_PROT_IPV4)
653 memcpy(&addr.u.a4.addr, ip, 4);
654 else
655 memcpy(&addr.u.a6.addr, ip, 16);
656
657 return qeth_l3_modify_ip(card, &addr, add);
658 }
659
660 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
661 {
662 struct qeth_ipaddr addr;
663 unsigned int i;
664
665 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
666 addr.u.a6.addr.s6_addr[0] = 0xfe;
667 addr.u.a6.addr.s6_addr[1] = 0x80;
668 for (i = 0; i < 8; i++)
669 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
670
671 return qeth_l3_modify_ip(card, &addr, add);
672 }
673
674 static int qeth_l3_register_addr_entry(struct qeth_card *card,
675 struct qeth_ipaddr *addr)
676 {
677 char buf[50];
678 int rc = 0;
679 int cnt = 3;
680
681 if (card->options.sniffer)
682 return 0;
683
684 if (addr->proto == QETH_PROT_IPV4) {
685 QETH_CARD_TEXT(card, 2, "setaddr4");
686 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
687 } else if (addr->proto == QETH_PROT_IPV6) {
688 QETH_CARD_TEXT(card, 2, "setaddr6");
689 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
690 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
691 } else {
692 QETH_CARD_TEXT(card, 2, "setaddr?");
693 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
694 }
695 do {
696 if (addr->is_multicast)
697 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
698 else
699 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
700 if (rc)
701 QETH_CARD_TEXT(card, 2, "failed");
702 } while ((--cnt > 0) && rc);
703 if (rc) {
704 QETH_CARD_TEXT(card, 2, "FAILED");
705 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
706 dev_warn(&card->gdev->dev,
707 "Registering IP address %s failed\n", buf);
708 }
709 return rc;
710 }
711
712 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
713 struct qeth_ipaddr *addr)
714 {
715 int rc = 0;
716
717 if (card->options.sniffer)
718 return 0;
719
720 if (addr->proto == QETH_PROT_IPV4) {
721 QETH_CARD_TEXT(card, 2, "deladdr4");
722 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
723 } else if (addr->proto == QETH_PROT_IPV6) {
724 QETH_CARD_TEXT(card, 2, "deladdr6");
725 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
726 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
727 } else {
728 QETH_CARD_TEXT(card, 2, "deladdr?");
729 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
730 }
731 if (addr->is_multicast)
732 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
733 else
734 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
735 if (rc)
736 QETH_CARD_TEXT(card, 2, "failed");
737
738 return rc;
739 }
740
741 static int qeth_l3_setadapter_parms(struct qeth_card *card)
742 {
743 int rc = 0;
744
745 QETH_DBF_TEXT(SETUP, 2, "setadprm");
746
747 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
748 rc = qeth_setadpparms_change_macaddr(card);
749 if (rc)
750 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
751 " address failed\n");
752 }
753
754 return rc;
755 }
756
757 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
758 {
759 int rc;
760
761 QETH_CARD_TEXT(card, 3, "ipaarp");
762
763 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
764 dev_info(&card->gdev->dev,
765 "ARP processing not supported on %s!\n",
766 QETH_CARD_IFNAME(card));
767 return 0;
768 }
769 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
770 IPA_CMD_ASS_START, 0);
771 if (rc) {
772 dev_warn(&card->gdev->dev,
773 "Starting ARP processing support for %s failed\n",
774 QETH_CARD_IFNAME(card));
775 }
776 return rc;
777 }
778
779 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
780 {
781 int rc;
782
783 QETH_CARD_TEXT(card, 3, "stsrcmac");
784
785 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
786 dev_info(&card->gdev->dev,
787 "Inbound source MAC-address not supported on %s\n",
788 QETH_CARD_IFNAME(card));
789 return -EOPNOTSUPP;
790 }
791
792 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
793 IPA_CMD_ASS_START, 0);
794 if (rc)
795 dev_warn(&card->gdev->dev,
796 "Starting source MAC-address support for %s failed\n",
797 QETH_CARD_IFNAME(card));
798 return rc;
799 }
800
801 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
802 {
803 int rc = 0;
804
805 QETH_CARD_TEXT(card, 3, "strtvlan");
806
807 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
808 dev_info(&card->gdev->dev,
809 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
810 return -EOPNOTSUPP;
811 }
812
813 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
814 IPA_CMD_ASS_START, 0);
815 if (rc) {
816 dev_warn(&card->gdev->dev,
817 "Starting VLAN support for %s failed\n",
818 QETH_CARD_IFNAME(card));
819 } else {
820 dev_info(&card->gdev->dev, "VLAN enabled\n");
821 }
822 return rc;
823 }
824
825 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
826 {
827 int rc;
828
829 QETH_CARD_TEXT(card, 3, "stmcast");
830
831 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
832 dev_info(&card->gdev->dev,
833 "Multicast not supported on %s\n",
834 QETH_CARD_IFNAME(card));
835 return -EOPNOTSUPP;
836 }
837
838 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
839 IPA_CMD_ASS_START, 0);
840 if (rc) {
841 dev_warn(&card->gdev->dev,
842 "Starting multicast support for %s failed\n",
843 QETH_CARD_IFNAME(card));
844 } else {
845 dev_info(&card->gdev->dev, "Multicast enabled\n");
846 card->dev->flags |= IFF_MULTICAST;
847 }
848 return rc;
849 }
850
851 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
852 {
853 int rc;
854
855 QETH_CARD_TEXT(card, 3, "softipv6");
856
857 if (IS_IQD(card))
858 goto out;
859
860 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
861 IPA_CMD_ASS_START, 3);
862 if (rc) {
863 dev_err(&card->gdev->dev,
864 "Activating IPv6 support for %s failed\n",
865 QETH_CARD_IFNAME(card));
866 return rc;
867 }
868 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6,
869 IPA_CMD_ASS_START, 0);
870 if (rc) {
871 dev_err(&card->gdev->dev,
872 "Activating IPv6 support for %s failed\n",
873 QETH_CARD_IFNAME(card));
874 return rc;
875 }
876 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
877 IPA_CMD_ASS_START, 0);
878 if (rc) {
879 dev_warn(&card->gdev->dev,
880 "Enabling the passthrough mode for %s failed\n",
881 QETH_CARD_IFNAME(card));
882 return rc;
883 }
884 out:
885 dev_info(&card->gdev->dev, "IPV6 enabled\n");
886 return 0;
887 }
888
889 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
890 {
891 QETH_CARD_TEXT(card, 3, "strtipv6");
892
893 if (!qeth_is_supported(card, IPA_IPV6)) {
894 dev_info(&card->gdev->dev,
895 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
896 return 0;
897 }
898 return qeth_l3_softsetup_ipv6(card);
899 }
900
901 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
902 {
903 int rc;
904
905 QETH_CARD_TEXT(card, 3, "stbrdcst");
906 card->info.broadcast_capable = 0;
907 if (!qeth_is_supported(card, IPA_FILTERING)) {
908 dev_info(&card->gdev->dev,
909 "Broadcast not supported on %s\n",
910 QETH_CARD_IFNAME(card));
911 rc = -EOPNOTSUPP;
912 goto out;
913 }
914 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
915 IPA_CMD_ASS_START, 0);
916 if (rc) {
917 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
918 "%s failed\n", QETH_CARD_IFNAME(card));
919 goto out;
920 }
921
922 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
923 IPA_CMD_ASS_CONFIGURE, 1);
924 if (rc) {
925 dev_warn(&card->gdev->dev,
926 "Setting up broadcast filtering for %s failed\n",
927 QETH_CARD_IFNAME(card));
928 goto out;
929 }
930 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
931 dev_info(&card->gdev->dev, "Broadcast enabled\n");
932 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
933 IPA_CMD_ASS_ENABLE, 1);
934 if (rc) {
935 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
936 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
937 goto out;
938 }
939 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
940 out:
941 if (card->info.broadcast_capable)
942 card->dev->flags |= IFF_BROADCAST;
943 else
944 card->dev->flags &= ~IFF_BROADCAST;
945 return rc;
946 }
947
948 static int qeth_l3_start_ipassists(struct qeth_card *card)
949 {
950 QETH_CARD_TEXT(card, 3, "strtipas");
951
952 if (qeth_set_access_ctrl_online(card, 0))
953 return -EIO;
954 qeth_l3_start_ipa_arp_processing(card); /* go on*/
955 qeth_l3_start_ipa_source_mac(card); /* go on*/
956 qeth_l3_start_ipa_vlan(card); /* go on*/
957 qeth_l3_start_ipa_multicast(card); /* go on*/
958 qeth_l3_start_ipa_ipv6(card); /* go on*/
959 qeth_l3_start_ipa_broadcast(card); /* go on*/
960 return 0;
961 }
962
963 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
964 struct qeth_reply *reply, unsigned long data)
965 {
966 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
967
968 if (cmd->hdr.return_code)
969 return -EIO;
970
971 ether_addr_copy(card->dev->dev_addr,
972 cmd->data.create_destroy_addr.unique_id);
973 return 0;
974 }
975
976 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
977 {
978 int rc = 0;
979 struct qeth_cmd_buffer *iob;
980 struct qeth_ipa_cmd *cmd;
981
982 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
983
984 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
985 QETH_PROT_IPV6);
986 if (!iob)
987 return -ENOMEM;
988 cmd = __ipa_cmd(iob);
989 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
990 card->info.unique_id;
991
992 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
993 NULL);
994 return rc;
995 }
996
997 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
998 struct qeth_reply *reply, unsigned long data)
999 {
1000 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1001
1002 if (cmd->hdr.return_code == 0) {
1003 card->info.unique_id = *((__u16 *)
1004 &cmd->data.create_destroy_addr.unique_id[6]);
1005 return 0;
1006 }
1007
1008 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1009 UNIQUE_ID_NOT_BY_CARD;
1010 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
1011 return -EIO;
1012 }
1013
1014 static int qeth_l3_get_unique_id(struct qeth_card *card)
1015 {
1016 int rc = 0;
1017 struct qeth_cmd_buffer *iob;
1018 struct qeth_ipa_cmd *cmd;
1019
1020 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1021
1022 if (!qeth_is_supported(card, IPA_IPV6)) {
1023 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1024 UNIQUE_ID_NOT_BY_CARD;
1025 return 0;
1026 }
1027
1028 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1029 QETH_PROT_IPV6);
1030 if (!iob)
1031 return -ENOMEM;
1032 cmd = __ipa_cmd(iob);
1033 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1034 card->info.unique_id;
1035
1036 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1037 return rc;
1038 }
1039
1040 static int
1041 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1042 unsigned long data)
1043 {
1044 struct qeth_ipa_cmd *cmd;
1045 __u16 rc;
1046
1047 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1048
1049 cmd = (struct qeth_ipa_cmd *)data;
1050 rc = cmd->hdr.return_code;
1051 if (rc)
1052 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1053 switch (cmd->data.diagass.action) {
1054 case QETH_DIAGS_CMD_TRACE_QUERY:
1055 break;
1056 case QETH_DIAGS_CMD_TRACE_DISABLE:
1057 switch (rc) {
1058 case 0:
1059 case IPA_RC_INVALID_SUBCMD:
1060 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1061 dev_info(&card->gdev->dev, "The HiperSockets network "
1062 "traffic analyzer is deactivated\n");
1063 break;
1064 default:
1065 break;
1066 }
1067 break;
1068 case QETH_DIAGS_CMD_TRACE_ENABLE:
1069 switch (rc) {
1070 case 0:
1071 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1072 dev_info(&card->gdev->dev, "The HiperSockets network "
1073 "traffic analyzer is activated\n");
1074 break;
1075 case IPA_RC_HARDWARE_AUTH_ERROR:
1076 dev_warn(&card->gdev->dev, "The device is not "
1077 "authorized to run as a HiperSockets network "
1078 "traffic analyzer\n");
1079 break;
1080 case IPA_RC_TRACE_ALREADY_ACTIVE:
1081 dev_warn(&card->gdev->dev, "A HiperSockets "
1082 "network traffic analyzer is already "
1083 "active in the HiperSockets LAN\n");
1084 break;
1085 default:
1086 break;
1087 }
1088 break;
1089 default:
1090 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1091 cmd->data.diagass.action, CARD_DEVID(card));
1092 }
1093
1094 return rc ? -EIO : 0;
1095 }
1096
1097 static int
1098 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1099 {
1100 struct qeth_cmd_buffer *iob;
1101 struct qeth_ipa_cmd *cmd;
1102
1103 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1104
1105 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1106 if (!iob)
1107 return -ENOMEM;
1108 cmd = __ipa_cmd(iob);
1109 cmd->data.diagass.subcmd_len = 16;
1110 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1111 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1112 cmd->data.diagass.action = diags_cmd;
1113 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1114 }
1115
1116 static void
1117 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1118 {
1119 struct ip_mc_list *im4;
1120 struct qeth_ipaddr *tmp, *ipm;
1121
1122 QETH_CARD_TEXT(card, 4, "addmc");
1123
1124 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1125 if (!tmp)
1126 return;
1127
1128 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1129 im4 = rcu_dereference(im4->next_rcu)) {
1130 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1131 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1132 tmp->is_multicast = 1;
1133
1134 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1135 if (ipm) {
1136 /* for mcast, by-IP match means full match */
1137 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1138 } else {
1139 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1140 if (!ipm)
1141 continue;
1142 ether_addr_copy(ipm->mac, tmp->mac);
1143 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1144 ipm->is_multicast = 1;
1145 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1146 hash_add(card->ip_mc_htable,
1147 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1148 }
1149 }
1150
1151 kfree(tmp);
1152 }
1153
1154 /* called with rcu_read_lock */
1155 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1156 {
1157 struct in_device *in_dev;
1158 u16 vid;
1159
1160 QETH_CARD_TEXT(card, 4, "addmcvl");
1161
1162 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1163 return;
1164
1165 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1166 struct net_device *netdev;
1167
1168 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1169 vid);
1170 if (netdev == NULL ||
1171 !(netdev->flags & IFF_UP))
1172 continue;
1173 in_dev = __in_dev_get_rcu(netdev);
1174 if (!in_dev)
1175 continue;
1176 qeth_l3_add_mc_to_hash(card, in_dev);
1177 }
1178 }
1179
1180 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1181 {
1182 struct in_device *in4_dev;
1183
1184 QETH_CARD_TEXT(card, 4, "chkmcv4");
1185
1186 rcu_read_lock();
1187 in4_dev = __in_dev_get_rcu(card->dev);
1188 if (in4_dev == NULL)
1189 goto unlock;
1190 qeth_l3_add_mc_to_hash(card, in4_dev);
1191 qeth_l3_add_vlan_mc(card);
1192 unlock:
1193 rcu_read_unlock();
1194 }
1195
1196 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1197 struct inet6_dev *in6_dev)
1198 {
1199 struct qeth_ipaddr *ipm;
1200 struct ifmcaddr6 *im6;
1201 struct qeth_ipaddr *tmp;
1202
1203 QETH_CARD_TEXT(card, 4, "addmc6");
1204
1205 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1206 if (!tmp)
1207 return;
1208
1209 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1210 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1211 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1212 sizeof(struct in6_addr));
1213 tmp->is_multicast = 1;
1214
1215 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1216 if (ipm) {
1217 /* for mcast, by-IP match means full match */
1218 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1219 continue;
1220 }
1221
1222 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1223 if (!ipm)
1224 continue;
1225
1226 ether_addr_copy(ipm->mac, tmp->mac);
1227 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1228 sizeof(struct in6_addr));
1229 ipm->is_multicast = 1;
1230 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1231 hash_add(card->ip_mc_htable,
1232 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1233
1234 }
1235 kfree(tmp);
1236 }
1237
1238 /* called with rcu_read_lock */
1239 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1240 {
1241 struct inet6_dev *in_dev;
1242 u16 vid;
1243
1244 QETH_CARD_TEXT(card, 4, "admc6vl");
1245
1246 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1247 return;
1248
1249 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1250 struct net_device *netdev;
1251
1252 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1253 vid);
1254 if (netdev == NULL ||
1255 !(netdev->flags & IFF_UP))
1256 continue;
1257 in_dev = in6_dev_get(netdev);
1258 if (!in_dev)
1259 continue;
1260 read_lock_bh(&in_dev->lock);
1261 qeth_l3_add_mc6_to_hash(card, in_dev);
1262 read_unlock_bh(&in_dev->lock);
1263 in6_dev_put(in_dev);
1264 }
1265 }
1266
1267 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1268 {
1269 struct inet6_dev *in6_dev;
1270
1271 QETH_CARD_TEXT(card, 4, "chkmcv6");
1272
1273 if (!qeth_is_supported(card, IPA_IPV6))
1274 return ;
1275 in6_dev = in6_dev_get(card->dev);
1276 if (!in6_dev)
1277 return;
1278
1279 rcu_read_lock();
1280 read_lock_bh(&in6_dev->lock);
1281 qeth_l3_add_mc6_to_hash(card, in6_dev);
1282 qeth_l3_add_vlan_mc6(card);
1283 read_unlock_bh(&in6_dev->lock);
1284 rcu_read_unlock();
1285 in6_dev_put(in6_dev);
1286 }
1287
1288 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1289 __be16 proto, u16 vid)
1290 {
1291 struct qeth_card *card = dev->ml_priv;
1292
1293 set_bit(vid, card->active_vlans);
1294 return 0;
1295 }
1296
1297 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1298 __be16 proto, u16 vid)
1299 {
1300 struct qeth_card *card = dev->ml_priv;
1301
1302 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1303
1304 clear_bit(vid, card->active_vlans);
1305 qeth_l3_set_rx_mode(dev);
1306 return 0;
1307 }
1308
1309 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1310 struct qeth_hdr *hdr)
1311 {
1312 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1313 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1314 ETH_P_IP;
1315 unsigned char tg_addr[ETH_ALEN];
1316
1317 skb_reset_network_header(skb);
1318 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1319 case QETH_CAST_MULTICAST:
1320 if (prot == ETH_P_IP)
1321 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1322 else
1323 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1324 QETH_CARD_STAT_INC(card, rx_multicast);
1325 break;
1326 case QETH_CAST_BROADCAST:
1327 ether_addr_copy(tg_addr, card->dev->broadcast);
1328 QETH_CARD_STAT_INC(card, rx_multicast);
1329 break;
1330 default:
1331 if (card->options.sniffer)
1332 skb->pkt_type = PACKET_OTHERHOST;
1333 ether_addr_copy(tg_addr, card->dev->dev_addr);
1334 }
1335
1336 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1337 card->dev->header_ops->create(skb, card->dev, prot,
1338 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1339 skb->len);
1340 else
1341 card->dev->header_ops->create(skb, card->dev, prot,
1342 tg_addr, "FAKELL", skb->len);
1343 }
1344
1345 skb->protocol = eth_type_trans(skb, card->dev);
1346
1347 /* copy VLAN tag from hdr into skb */
1348 if (!card->options.sniffer &&
1349 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1350 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1351 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1352 hdr->hdr.l3.vlan_id :
1353 hdr->hdr.l3.next_hop.rx.vlan_id;
1354 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1355 }
1356
1357 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1358 }
1359
1360 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1361 int budget, int *done)
1362 {
1363 struct net_device *dev = card->dev;
1364 int work_done = 0;
1365 struct sk_buff *skb;
1366 struct qeth_hdr *hdr;
1367 unsigned int len;
1368 __u16 magic;
1369
1370 *done = 0;
1371 WARN_ON_ONCE(!budget);
1372 while (budget) {
1373 skb = qeth_core_get_next_skb(card,
1374 &card->qdio.in_q->bufs[card->rx.b_index],
1375 &card->rx.b_element, &card->rx.e_offset, &hdr);
1376 if (!skb) {
1377 *done = 1;
1378 break;
1379 }
1380 switch (hdr->hdr.l3.id) {
1381 case QETH_HEADER_TYPE_LAYER3:
1382 magic = *(__u16 *)skb->data;
1383 if (IS_IQD(card) && magic == ETH_P_AF_IUCV) {
1384 len = skb->len;
1385 dev_hard_header(skb, dev, ETH_P_AF_IUCV,
1386 dev->dev_addr, "FAKELL", len);
1387 skb->protocol = eth_type_trans(skb, dev);
1388 netif_receive_skb(skb);
1389 } else {
1390 qeth_l3_rebuild_skb(card, skb, hdr);
1391 len = skb->len;
1392 napi_gro_receive(&card->napi, skb);
1393 }
1394 break;
1395 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1396 skb->protocol = eth_type_trans(skb, skb->dev);
1397 len = skb->len;
1398 netif_receive_skb(skb);
1399 break;
1400 default:
1401 dev_kfree_skb_any(skb);
1402 QETH_CARD_TEXT(card, 3, "inbunkno");
1403 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1404 continue;
1405 }
1406 work_done++;
1407 budget--;
1408 QETH_CARD_STAT_INC(card, rx_packets);
1409 QETH_CARD_STAT_ADD(card, rx_bytes, len);
1410 }
1411 return work_done;
1412 }
1413
1414 static void qeth_l3_stop_card(struct qeth_card *card)
1415 {
1416 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1417 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1418
1419 qeth_set_allowed_threads(card, 0, 1);
1420
1421 cancel_work_sync(&card->rx_mode_work);
1422 qeth_l3_drain_rx_mode_cache(card);
1423
1424 if (card->options.sniffer &&
1425 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1426 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1427
1428 if (card->state == CARD_STATE_SOFTSETUP) {
1429 qeth_l3_clear_ip_htable(card, 1);
1430 qeth_clear_ipacmd_list(card);
1431 card->state = CARD_STATE_HARDSETUP;
1432 }
1433 if (card->state == CARD_STATE_HARDSETUP) {
1434 qeth_qdio_clear_card(card, 0);
1435 qeth_drain_output_queues(card);
1436 qeth_clear_working_pool_list(card);
1437 card->state = CARD_STATE_DOWN;
1438 }
1439 if (card->state == CARD_STATE_DOWN) {
1440 qeth_clear_cmd_buffers(&card->read);
1441 qeth_clear_cmd_buffers(&card->write);
1442 }
1443
1444 flush_workqueue(card->event_wq);
1445 }
1446
1447 /*
1448 * test for and Switch promiscuous mode (on or off)
1449 * either for guestlan or HiperSocket Sniffer
1450 */
1451 static void
1452 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1453 {
1454 struct net_device *dev = card->dev;
1455
1456 if (((dev->flags & IFF_PROMISC) &&
1457 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1458 (!(dev->flags & IFF_PROMISC) &&
1459 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1460 return;
1461
1462 if (IS_VM_NIC(card)) { /* Guestlan trace */
1463 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1464 qeth_setadp_promisc_mode(card);
1465 } else if (card->options.sniffer && /* HiperSockets trace */
1466 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1467 if (dev->flags & IFF_PROMISC) {
1468 QETH_CARD_TEXT(card, 3, "+promisc");
1469 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1470 } else {
1471 QETH_CARD_TEXT(card, 3, "-promisc");
1472 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1473 }
1474 }
1475 }
1476
1477 static void qeth_l3_rx_mode_work(struct work_struct *work)
1478 {
1479 struct qeth_card *card = container_of(work, struct qeth_card,
1480 rx_mode_work);
1481 struct qeth_ipaddr *addr;
1482 struct hlist_node *tmp;
1483 int i, rc;
1484
1485 QETH_CARD_TEXT(card, 3, "setmulti");
1486
1487 if (!card->options.sniffer) {
1488 qeth_l3_add_multicast_ipv4(card);
1489 qeth_l3_add_multicast_ipv6(card);
1490
1491 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1492 switch (addr->disp_flag) {
1493 case QETH_DISP_ADDR_DELETE:
1494 rc = qeth_l3_deregister_addr_entry(card, addr);
1495 if (!rc || rc == -ENOENT) {
1496 hash_del(&addr->hnode);
1497 kfree(addr);
1498 }
1499 break;
1500 case QETH_DISP_ADDR_ADD:
1501 rc = qeth_l3_register_addr_entry(card, addr);
1502 if (rc && rc != -ENETDOWN) {
1503 hash_del(&addr->hnode);
1504 kfree(addr);
1505 break;
1506 }
1507 addr->ref_counter = 1;
1508 /* fall through */
1509 default:
1510 /* for next call to set_rx_mode(): */
1511 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1512 }
1513 }
1514
1515 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1516 return;
1517 }
1518 qeth_l3_handle_promisc_mode(card);
1519 }
1520
1521 static int qeth_l3_arp_makerc(u16 rc)
1522 {
1523 switch (rc) {
1524 case IPA_RC_SUCCESS:
1525 return 0;
1526 case QETH_IPA_ARP_RC_NOTSUPP:
1527 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1528 return -EOPNOTSUPP;
1529 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1530 return -EINVAL;
1531 case QETH_IPA_ARP_RC_Q_NO_DATA:
1532 return -ENOENT;
1533 default:
1534 return -EIO;
1535 }
1536 }
1537
1538 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1539 unsigned long data)
1540 {
1541 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1542
1543 qeth_setassparms_cb(card, reply, data);
1544 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1545 }
1546
1547 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1548 {
1549 struct qeth_cmd_buffer *iob;
1550 int rc;
1551
1552 QETH_CARD_TEXT(card, 3, "arpstnoe");
1553
1554 /*
1555 * currently GuestLAN only supports the ARP assist function
1556 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1557 * thus we say EOPNOTSUPP for this ARP function
1558 */
1559 if (IS_VM_NIC(card))
1560 return -EOPNOTSUPP;
1561 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1562 return -EOPNOTSUPP;
1563 }
1564
1565 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1566 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 4,
1567 QETH_PROT_IPV4);
1568 if (!iob)
1569 return -ENOMEM;
1570
1571 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1572 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1573 if (rc)
1574 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1575 CARD_DEVID(card), rc);
1576 return rc;
1577 }
1578
1579 static __u32 get_arp_entry_size(struct qeth_card *card,
1580 struct qeth_arp_query_data *qdata,
1581 struct qeth_arp_entrytype *type, __u8 strip_entries)
1582 {
1583 __u32 rc;
1584 __u8 is_hsi;
1585
1586 is_hsi = qdata->reply_bits == 5;
1587 if (type->ip == QETHARP_IP_ADDR_V4) {
1588 QETH_CARD_TEXT(card, 4, "arpev4");
1589 if (strip_entries) {
1590 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1591 sizeof(struct qeth_arp_qi_entry7_short);
1592 } else {
1593 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1594 sizeof(struct qeth_arp_qi_entry7);
1595 }
1596 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1597 QETH_CARD_TEXT(card, 4, "arpev6");
1598 if (strip_entries) {
1599 rc = is_hsi ?
1600 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1601 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1602 } else {
1603 rc = is_hsi ?
1604 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1605 sizeof(struct qeth_arp_qi_entry7_ipv6);
1606 }
1607 } else {
1608 QETH_CARD_TEXT(card, 4, "arpinv");
1609 rc = 0;
1610 }
1611
1612 return rc;
1613 }
1614
1615 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1616 {
1617 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1618 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1619 }
1620
1621 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1622 struct qeth_reply *reply, unsigned long data)
1623 {
1624 struct qeth_ipa_cmd *cmd;
1625 struct qeth_arp_query_data *qdata;
1626 struct qeth_arp_query_info *qinfo;
1627 int e;
1628 int entrybytes_done;
1629 int stripped_bytes;
1630 __u8 do_strip_entries;
1631
1632 QETH_CARD_TEXT(card, 3, "arpquecb");
1633
1634 qinfo = (struct qeth_arp_query_info *) reply->param;
1635 cmd = (struct qeth_ipa_cmd *) data;
1636 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1637 if (cmd->hdr.return_code) {
1638 QETH_CARD_TEXT(card, 4, "arpcberr");
1639 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1640 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1641 }
1642 if (cmd->data.setassparms.hdr.return_code) {
1643 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1644 QETH_CARD_TEXT(card, 4, "setaperr");
1645 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1646 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1647 }
1648 qdata = &cmd->data.setassparms.data.query_arp;
1649 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1650
1651 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1652 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1653 entrybytes_done = 0;
1654 for (e = 0; e < qdata->no_entries; ++e) {
1655 char *cur_entry;
1656 __u32 esize;
1657 struct qeth_arp_entrytype *etype;
1658
1659 cur_entry = &qdata->data + entrybytes_done;
1660 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1661 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1662 QETH_CARD_TEXT(card, 4, "pmis");
1663 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1664 break;
1665 }
1666 esize = get_arp_entry_size(card, qdata, etype,
1667 do_strip_entries);
1668 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1669 if (!esize)
1670 break;
1671
1672 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1673 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1674 memset(qinfo->udata, 0, 4);
1675 return -ENOSPC;
1676 }
1677
1678 memcpy(qinfo->udata + qinfo->udata_offset,
1679 &qdata->data + entrybytes_done + stripped_bytes,
1680 esize);
1681 entrybytes_done += esize + stripped_bytes;
1682 qinfo->udata_offset += esize;
1683 ++qinfo->no_entries;
1684 }
1685 /* check if all replies received ... */
1686 if (cmd->data.setassparms.hdr.seq_no <
1687 cmd->data.setassparms.hdr.number_of_replies)
1688 return 1;
1689 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1690 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1691 /* keep STRIP_ENTRIES flag so the user program can distinguish
1692 * stripped entries from normal ones */
1693 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1694 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1695 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1696 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1697 return 0;
1698 }
1699
1700 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1701 enum qeth_prot_versions prot,
1702 struct qeth_arp_query_info *qinfo)
1703 {
1704 struct qeth_cmd_buffer *iob;
1705 struct qeth_ipa_cmd *cmd;
1706 int rc;
1707
1708 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1709
1710 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1711 IPA_CMD_ASS_ARP_QUERY_INFO,
1712 sizeof(struct qeth_arp_query_data)
1713 - sizeof(char),
1714 prot);
1715 if (!iob)
1716 return -ENOMEM;
1717 cmd = __ipa_cmd(iob);
1718 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1719 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1720 if (rc)
1721 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1722 CARD_DEVID(card), rc);
1723 return rc;
1724 }
1725
1726 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1727 {
1728 struct qeth_arp_query_info qinfo = {0, };
1729 int rc;
1730
1731 QETH_CARD_TEXT(card, 3, "arpquery");
1732
1733 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1734 IPA_ARP_PROCESSING)) {
1735 QETH_CARD_TEXT(card, 3, "arpqnsup");
1736 rc = -EOPNOTSUPP;
1737 goto out;
1738 }
1739 /* get size of userspace buffer and mask_bits -> 6 bytes */
1740 if (copy_from_user(&qinfo, udata, 6)) {
1741 rc = -EFAULT;
1742 goto out;
1743 }
1744 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1745 if (!qinfo.udata) {
1746 rc = -ENOMEM;
1747 goto out;
1748 }
1749 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1750 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1751 if (rc) {
1752 if (copy_to_user(udata, qinfo.udata, 4))
1753 rc = -EFAULT;
1754 goto free_and_out;
1755 }
1756 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1757 /* fails in case of GuestLAN QDIO mode */
1758 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1759 }
1760 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1761 QETH_CARD_TEXT(card, 4, "qactf");
1762 rc = -EFAULT;
1763 goto free_and_out;
1764 }
1765 QETH_CARD_TEXT(card, 4, "qacts");
1766
1767 free_and_out:
1768 kfree(qinfo.udata);
1769 out:
1770 return rc;
1771 }
1772
1773 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1774 struct qeth_arp_cache_entry *entry,
1775 enum qeth_arp_process_subcmds arp_cmd)
1776 {
1777 struct qeth_arp_cache_entry *cmd_entry;
1778 struct qeth_cmd_buffer *iob;
1779 int rc;
1780
1781 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1782 QETH_CARD_TEXT(card, 3, "arpadd");
1783 else
1784 QETH_CARD_TEXT(card, 3, "arpdel");
1785
1786 /*
1787 * currently GuestLAN only supports the ARP assist function
1788 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1789 * thus we say EOPNOTSUPP for this ARP function
1790 */
1791 if (IS_VM_NIC(card))
1792 return -EOPNOTSUPP;
1793 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1794 return -EOPNOTSUPP;
1795 }
1796
1797 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1798 sizeof(*cmd_entry), QETH_PROT_IPV4);
1799 if (!iob)
1800 return -ENOMEM;
1801
1802 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1803 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1804 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1805 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1806 if (rc)
1807 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1808 arp_cmd, CARD_DEVID(card), rc);
1809 return rc;
1810 }
1811
1812 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1813 {
1814 struct qeth_cmd_buffer *iob;
1815 int rc;
1816
1817 QETH_CARD_TEXT(card, 3, "arpflush");
1818
1819 /*
1820 * currently GuestLAN only supports the ARP assist function
1821 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1822 * thus we say EOPNOTSUPP for this ARP function
1823 */
1824 if (IS_VM_NIC(card) || IS_IQD(card))
1825 return -EOPNOTSUPP;
1826 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1827 return -EOPNOTSUPP;
1828 }
1829
1830 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1831 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1832 QETH_PROT_IPV4);
1833 if (!iob)
1834 return -ENOMEM;
1835
1836 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1837 if (rc)
1838 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1839 CARD_DEVID(card), rc);
1840 return rc;
1841 }
1842
1843 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1844 {
1845 struct qeth_card *card = dev->ml_priv;
1846 struct qeth_arp_cache_entry arp_entry;
1847 enum qeth_arp_process_subcmds arp_cmd;
1848 int rc = 0;
1849
1850 switch (cmd) {
1851 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1852 if (!capable(CAP_NET_ADMIN)) {
1853 rc = -EPERM;
1854 break;
1855 }
1856 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1857 break;
1858 case SIOC_QETH_ARP_QUERY_INFO:
1859 if (!capable(CAP_NET_ADMIN)) {
1860 rc = -EPERM;
1861 break;
1862 }
1863 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1864 break;
1865 case SIOC_QETH_ARP_ADD_ENTRY:
1866 case SIOC_QETH_ARP_REMOVE_ENTRY:
1867 if (!capable(CAP_NET_ADMIN))
1868 return -EPERM;
1869 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1870 return -EFAULT;
1871
1872 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1873 IPA_CMD_ASS_ARP_ADD_ENTRY :
1874 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1875 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1876 case SIOC_QETH_ARP_FLUSH_CACHE:
1877 if (!capable(CAP_NET_ADMIN)) {
1878 rc = -EPERM;
1879 break;
1880 }
1881 rc = qeth_l3_arp_flush_cache(card);
1882 break;
1883 default:
1884 rc = -EOPNOTSUPP;
1885 }
1886 return rc;
1887 }
1888
1889 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1890 {
1891 struct neighbour *n = NULL;
1892 struct dst_entry *dst;
1893
1894 rcu_read_lock();
1895 dst = skb_dst(skb);
1896 if (dst)
1897 n = dst_neigh_lookup_skb(dst, skb);
1898 if (n) {
1899 int cast_type = n->type;
1900
1901 rcu_read_unlock();
1902 neigh_release(n);
1903 if ((cast_type == RTN_BROADCAST) ||
1904 (cast_type == RTN_MULTICAST) ||
1905 (cast_type == RTN_ANYCAST))
1906 return cast_type;
1907 return RTN_UNICAST;
1908 }
1909 rcu_read_unlock();
1910
1911 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1912 switch (qeth_get_ip_version(skb)) {
1913 case 4:
1914 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1915 RTN_MULTICAST : RTN_UNICAST;
1916 case 6:
1917 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1918 RTN_MULTICAST : RTN_UNICAST;
1919 default:
1920 /* ... and MAC address */
1921 return qeth_get_ether_cast_type(skb);
1922 }
1923 }
1924
1925 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1926 {
1927 if (cast_type == RTN_MULTICAST)
1928 return QETH_CAST_MULTICAST;
1929 if (cast_type == RTN_ANYCAST)
1930 return QETH_CAST_ANYCAST;
1931 if (cast_type == RTN_BROADCAST)
1932 return QETH_CAST_BROADCAST;
1933 return QETH_CAST_UNICAST;
1934 }
1935
1936 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1937 struct qeth_hdr *hdr, struct sk_buff *skb,
1938 int ipv, int cast_type, unsigned int data_len)
1939 {
1940 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1941 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1942 struct qeth_card *card = queue->card;
1943
1944 hdr->hdr.l3.length = data_len;
1945
1946 if (skb_is_gso(skb)) {
1947 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1948 } else {
1949 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1950
1951 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1952 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1953 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1954 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1955 iucv_trans_hdr(skb)->destUserID, 8);
1956 return;
1957 }
1958
1959 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1960 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1961 /* some HW requires combined L3+L4 csum offload: */
1962 if (ipv == 4)
1963 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1964 QETH_TXQ_STAT_INC(queue, skbs_csum);
1965 }
1966 }
1967
1968 if (ipv == 4 || IS_IQD(card)) {
1969 /* NETIF_F_HW_VLAN_CTAG_TX */
1970 if (skb_vlan_tag_present(skb)) {
1971 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1972 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1973 }
1974 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1975 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1976 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1977 }
1978
1979 l3_hdr->flags = qeth_l3_cast_type_to_flag(cast_type);
1980
1981 /* OSA only: */
1982 if (!ipv) {
1983 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1984 return;
1985 }
1986
1987 rcu_read_lock();
1988 if (ipv == 4) {
1989 struct rtable *rt = skb_rtable(skb);
1990
1991 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
1992 rt_nexthop(rt, ip_hdr(skb)->daddr) :
1993 ip_hdr(skb)->daddr;
1994 } else {
1995 /* IPv6 */
1996 const struct rt6_info *rt = skb_rt6_info(skb);
1997
1998 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
1999 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
2000 else
2001 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
2002
2003 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2004 if (!IS_IQD(card))
2005 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2006 }
2007 rcu_read_unlock();
2008 }
2009
2010 static void qeth_l3_fixup_headers(struct sk_buff *skb)
2011 {
2012 struct iphdr *iph = ip_hdr(skb);
2013
2014 /* this is safe, IPv6 traffic takes a different path */
2015 if (skb->ip_summed == CHECKSUM_PARTIAL)
2016 iph->check = 0;
2017 if (skb_is_gso(skb)) {
2018 iph->tot_len = 0;
2019 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
2020 iph->daddr, 0);
2021 }
2022 }
2023
2024 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2025 struct qeth_qdio_out_q *queue, int ipv, int cast_type)
2026 {
2027 unsigned int hw_hdr_len;
2028 int rc;
2029
2030 /* re-use the L2 header area for the HW header: */
2031 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
2032 sizeof(struct qeth_hdr);
2033 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2034 if (rc)
2035 return rc;
2036 skb_pull(skb, ETH_HLEN);
2037
2038 qeth_l3_fixup_headers(skb);
2039 return qeth_xmit(card, skb, queue, ipv, cast_type, qeth_l3_fill_header);
2040 }
2041
2042 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2043 struct net_device *dev)
2044 {
2045 struct qeth_card *card = dev->ml_priv;
2046 u16 txq = skb_get_queue_mapping(skb);
2047 int ipv = qeth_get_ip_version(skb);
2048 struct qeth_qdio_out_q *queue;
2049 int tx_bytes = skb->len;
2050 int cast_type, rc;
2051
2052 if (IS_IQD(card)) {
2053 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
2054
2055 if (card->options.sniffer)
2056 goto tx_drop;
2057 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2058 (card->options.cq == QETH_CQ_ENABLED &&
2059 skb->protocol != htons(ETH_P_AF_IUCV)))
2060 goto tx_drop;
2061
2062 if (txq == QETH_IQD_MCAST_TXQ)
2063 cast_type = qeth_l3_get_cast_type(skb);
2064 else
2065 cast_type = RTN_UNICAST;
2066 } else {
2067 queue = card->qdio.out_qs[txq];
2068 cast_type = qeth_l3_get_cast_type(skb);
2069 }
2070
2071 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable)
2072 goto tx_drop;
2073
2074 if (ipv == 4 || IS_IQD(card))
2075 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type);
2076 else
2077 rc = qeth_xmit(card, skb, queue, ipv, cast_type,
2078 qeth_l3_fill_header);
2079
2080 if (!rc) {
2081 QETH_TXQ_STAT_INC(queue, tx_packets);
2082 QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes);
2083 return NETDEV_TX_OK;
2084 }
2085
2086 tx_drop:
2087 QETH_TXQ_STAT_INC(queue, tx_dropped);
2088 kfree_skb(skb);
2089 return NETDEV_TX_OK;
2090 }
2091
2092 static void qeth_l3_set_rx_mode(struct net_device *dev)
2093 {
2094 struct qeth_card *card = dev->ml_priv;
2095
2096 schedule_work(&card->rx_mode_work);
2097 }
2098
2099 /*
2100 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2101 * NOARP on the netdevice is no option because it also turns off neighbor
2102 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2103 * arp resolution but we want the hard header (packet socket will work
2104 * e.g. tcpdump)
2105 */
2106 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2107 {
2108 n->nud_state = NUD_NOARP;
2109 memcpy(n->ha, "FAKELL", 6);
2110 n->output = n->ops->connected_output;
2111 return 0;
2112 }
2113
2114 static int
2115 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2116 {
2117 if (np->tbl->family == AF_INET)
2118 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2119
2120 return 0;
2121 }
2122
2123 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2124 struct net_device *dev,
2125 netdev_features_t features)
2126 {
2127 if (qeth_get_ip_version(skb) != 4)
2128 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2129 return qeth_features_check(skb, dev, features);
2130 }
2131
2132 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
2133 struct net_device *sb_dev)
2134 {
2135 return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb),
2136 sb_dev);
2137 }
2138
2139 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
2140 struct net_device *sb_dev)
2141 {
2142 struct qeth_card *card = dev->ml_priv;
2143
2144 return qeth_get_priority_queue(card, skb);
2145 }
2146
2147 static const struct net_device_ops qeth_l3_netdev_ops = {
2148 .ndo_open = qeth_open,
2149 .ndo_stop = qeth_stop,
2150 .ndo_get_stats64 = qeth_get_stats64,
2151 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2152 .ndo_select_queue = qeth_l3_iqd_select_queue,
2153 .ndo_validate_addr = eth_validate_addr,
2154 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2155 .ndo_do_ioctl = qeth_do_ioctl,
2156 .ndo_fix_features = qeth_fix_features,
2157 .ndo_set_features = qeth_set_features,
2158 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2159 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2160 .ndo_tx_timeout = qeth_tx_timeout,
2161 };
2162
2163 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2164 .ndo_open = qeth_open,
2165 .ndo_stop = qeth_stop,
2166 .ndo_get_stats64 = qeth_get_stats64,
2167 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2168 .ndo_features_check = qeth_l3_osa_features_check,
2169 .ndo_select_queue = qeth_l3_osa_select_queue,
2170 .ndo_validate_addr = eth_validate_addr,
2171 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2172 .ndo_do_ioctl = qeth_do_ioctl,
2173 .ndo_fix_features = qeth_fix_features,
2174 .ndo_set_features = qeth_set_features,
2175 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2176 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2177 .ndo_tx_timeout = qeth_tx_timeout,
2178 .ndo_neigh_setup = qeth_l3_neigh_setup,
2179 };
2180
2181 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
2182 {
2183 unsigned int headroom;
2184 int rc;
2185
2186 if (IS_OSD(card) || IS_OSX(card)) {
2187 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2188 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2189 pr_info("qeth_l3: ignoring TR device\n");
2190 return -ENODEV;
2191 }
2192
2193 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2194
2195 /*IPv6 address autoconfiguration stuff*/
2196 qeth_l3_get_unique_id(card);
2197 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2198 card->dev->dev_id = card->info.unique_id & 0xffff;
2199
2200 if (!IS_VM_NIC(card)) {
2201 card->dev->features |= NETIF_F_SG;
2202 card->dev->hw_features |= NETIF_F_TSO |
2203 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2204 card->dev->vlan_features |= NETIF_F_TSO |
2205 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2206 }
2207
2208 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2209 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2210 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2211 }
2212 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2213 card->dev->hw_features |= NETIF_F_TSO6;
2214 card->dev->vlan_features |= NETIF_F_TSO6;
2215 }
2216
2217 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2218 if (card->dev->hw_features & NETIF_F_TSO6)
2219 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2220 else if (card->dev->hw_features & NETIF_F_TSO)
2221 headroom = sizeof(struct qeth_hdr_tso);
2222 else
2223 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2224 } else if (IS_IQD(card)) {
2225 card->dev->flags |= IFF_NOARP;
2226 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2227 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2228
2229 rc = qeth_l3_iqd_read_initial_mac(card);
2230 if (rc)
2231 goto out;
2232 } else
2233 return -ENODEV;
2234
2235 card->dev->needed_headroom = headroom;
2236 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2237 NETIF_F_HW_VLAN_CTAG_RX |
2238 NETIF_F_HW_VLAN_CTAG_FILTER;
2239
2240 netif_keep_dst(card->dev);
2241 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2242 netif_set_gso_max_size(card->dev,
2243 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2244
2245 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2246 rc = register_netdev(card->dev);
2247 if (!rc && carrier_ok)
2248 netif_carrier_on(card->dev);
2249
2250 out:
2251 if (rc)
2252 card->dev->netdev_ops = NULL;
2253 return rc;
2254 }
2255
2256 static const struct device_type qeth_l3_devtype = {
2257 .name = "qeth_layer3",
2258 .groups = qeth_l3_attr_groups,
2259 };
2260
2261 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2262 {
2263 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2264 int rc;
2265
2266 hash_init(card->ip_htable);
2267 mutex_init(&card->ip_lock);
2268 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
2269 dev_name(&gdev->dev));
2270 if (!card->cmd_wq)
2271 return -ENOMEM;
2272
2273 if (gdev->dev.type == &qeth_generic_devtype) {
2274 rc = qeth_l3_create_device_attributes(&gdev->dev);
2275 if (rc) {
2276 destroy_workqueue(card->cmd_wq);
2277 return rc;
2278 }
2279 }
2280
2281 hash_init(card->ip_mc_htable);
2282 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
2283 return 0;
2284 }
2285
2286 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2287 {
2288 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2289
2290 if (cgdev->dev.type == &qeth_generic_devtype)
2291 qeth_l3_remove_device_attributes(&cgdev->dev);
2292
2293 qeth_set_allowed_threads(card, 0, 1);
2294 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2295
2296 if (cgdev->state == CCWGROUP_ONLINE)
2297 qeth_l3_set_offline(cgdev);
2298
2299 cancel_work_sync(&card->close_dev_work);
2300 if (qeth_netdev_is_registered(card->dev))
2301 unregister_netdev(card->dev);
2302
2303 flush_workqueue(card->cmd_wq);
2304 destroy_workqueue(card->cmd_wq);
2305 qeth_l3_clear_ip_htable(card, 0);
2306 qeth_l3_clear_ipato_list(card);
2307 }
2308
2309 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2310 {
2311 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2312 struct net_device *dev = card->dev;
2313 int rc = 0;
2314 bool carrier_ok;
2315
2316 mutex_lock(&card->discipline_mutex);
2317 mutex_lock(&card->conf_mutex);
2318 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2319 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2320
2321 rc = qeth_core_hardsetup_card(card, &carrier_ok);
2322 if (rc) {
2323 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2324 rc = -ENODEV;
2325 goto out_remove;
2326 }
2327
2328 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2329 if (card->info.hwtrap &&
2330 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2331 card->info.hwtrap = 0;
2332 } else
2333 card->info.hwtrap = 0;
2334
2335 card->state = CARD_STATE_HARDSETUP;
2336 qeth_print_status_message(card);
2337
2338 /* softsetup */
2339 QETH_DBF_TEXT(SETUP, 2, "softsetp");
2340
2341 rc = qeth_l3_setadapter_parms(card);
2342 if (rc)
2343 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2344 if (!card->options.sniffer) {
2345 rc = qeth_l3_start_ipassists(card);
2346 if (rc) {
2347 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2348 goto out_remove;
2349 }
2350 rc = qeth_l3_setrouting_v4(card);
2351 if (rc)
2352 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2353 rc = qeth_l3_setrouting_v6(card);
2354 if (rc)
2355 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2356 }
2357
2358 rc = qeth_init_qdio_queues(card);
2359 if (rc) {
2360 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2361 rc = -ENODEV;
2362 goto out_remove;
2363 }
2364 card->state = CARD_STATE_SOFTSETUP;
2365
2366 qeth_set_allowed_threads(card, 0xffffffff, 0);
2367 qeth_l3_recover_ip(card);
2368
2369 if (!qeth_netdev_is_registered(dev)) {
2370 rc = qeth_l3_setup_netdev(card, carrier_ok);
2371 if (rc)
2372 goto out_remove;
2373 } else {
2374 rtnl_lock();
2375 if (carrier_ok)
2376 netif_carrier_on(dev);
2377 else
2378 netif_carrier_off(dev);
2379
2380 netif_device_attach(dev);
2381 qeth_enable_hw_features(dev);
2382
2383 if (card->info.open_when_online) {
2384 card->info.open_when_online = 0;
2385 dev_open(dev, NULL);
2386 }
2387 rtnl_unlock();
2388 }
2389 qeth_trace_features(card);
2390 /* let user_space know that device is online */
2391 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2392 mutex_unlock(&card->conf_mutex);
2393 mutex_unlock(&card->discipline_mutex);
2394 return 0;
2395 out_remove:
2396 qeth_l3_stop_card(card);
2397 ccw_device_set_offline(CARD_DDEV(card));
2398 ccw_device_set_offline(CARD_WDEV(card));
2399 ccw_device_set_offline(CARD_RDEV(card));
2400 qdio_free(CARD_DDEV(card));
2401 card->state = CARD_STATE_DOWN;
2402
2403 mutex_unlock(&card->conf_mutex);
2404 mutex_unlock(&card->discipline_mutex);
2405 return rc;
2406 }
2407
2408 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2409 int recovery_mode)
2410 {
2411 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2412 int rc = 0, rc2 = 0, rc3 = 0;
2413
2414 mutex_lock(&card->discipline_mutex);
2415 mutex_lock(&card->conf_mutex);
2416 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2417 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2418
2419 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2420 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2421 card->info.hwtrap = 1;
2422 }
2423
2424 rtnl_lock();
2425 card->info.open_when_online = card->dev->flags & IFF_UP;
2426 dev_close(card->dev);
2427 netif_device_detach(card->dev);
2428 netif_carrier_off(card->dev);
2429 rtnl_unlock();
2430
2431 qeth_l3_stop_card(card);
2432 if (card->options.cq == QETH_CQ_ENABLED) {
2433 rtnl_lock();
2434 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2435 rtnl_unlock();
2436 }
2437 rc = ccw_device_set_offline(CARD_DDEV(card));
2438 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2439 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2440 if (!rc)
2441 rc = (rc2) ? rc2 : rc3;
2442 if (rc)
2443 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2444 qdio_free(CARD_DDEV(card));
2445
2446 /* let user_space know that device is offline */
2447 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2448 mutex_unlock(&card->conf_mutex);
2449 mutex_unlock(&card->discipline_mutex);
2450 return 0;
2451 }
2452
2453 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2454 {
2455 return __qeth_l3_set_offline(cgdev, 0);
2456 }
2457
2458 static int qeth_l3_recover(void *ptr)
2459 {
2460 struct qeth_card *card;
2461 int rc = 0;
2462
2463 card = (struct qeth_card *) ptr;
2464 QETH_CARD_TEXT(card, 2, "recover1");
2465 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2466 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2467 return 0;
2468 QETH_CARD_TEXT(card, 2, "recover2");
2469 dev_warn(&card->gdev->dev,
2470 "A recovery process has been started for the device\n");
2471 __qeth_l3_set_offline(card->gdev, 1);
2472 rc = qeth_l3_set_online(card->gdev);
2473 if (!rc)
2474 dev_info(&card->gdev->dev,
2475 "Device successfully recovered!\n");
2476 else {
2477 ccwgroup_set_offline(card->gdev);
2478 dev_warn(&card->gdev->dev, "The qeth device driver "
2479 "failed to recover an error on the device\n");
2480 }
2481 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2482 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2483 return 0;
2484 }
2485
2486 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2487 {
2488 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2489
2490 qeth_set_allowed_threads(card, 0, 1);
2491 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2492 if (gdev->state == CCWGROUP_OFFLINE)
2493 return 0;
2494
2495 qeth_l3_set_offline(gdev);
2496 return 0;
2497 }
2498
2499 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2500 {
2501 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2502 int rc;
2503
2504 rc = qeth_l3_set_online(gdev);
2505
2506 qeth_set_allowed_threads(card, 0xffffffff, 0);
2507 if (rc)
2508 dev_warn(&card->gdev->dev, "The qeth device driver "
2509 "failed to recover an error on the device\n");
2510 return rc;
2511 }
2512
2513 /* Returns zero if the command is successfully "consumed" */
2514 static int qeth_l3_control_event(struct qeth_card *card,
2515 struct qeth_ipa_cmd *cmd)
2516 {
2517 return 1;
2518 }
2519
2520 struct qeth_discipline qeth_l3_discipline = {
2521 .devtype = &qeth_l3_devtype,
2522 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2523 .recover = qeth_l3_recover,
2524 .setup = qeth_l3_probe_device,
2525 .remove = qeth_l3_remove_device,
2526 .set_online = qeth_l3_set_online,
2527 .set_offline = qeth_l3_set_offline,
2528 .freeze = qeth_l3_pm_suspend,
2529 .thaw = qeth_l3_pm_resume,
2530 .restore = qeth_l3_pm_resume,
2531 .do_ioctl = qeth_l3_do_ioctl,
2532 .control_event_handler = qeth_l3_control_event,
2533 };
2534 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2535
2536 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2537 struct qeth_ipaddr *addr,
2538 unsigned long event)
2539 {
2540 switch (event) {
2541 case NETDEV_UP:
2542 qeth_l3_modify_ip(card, addr, true);
2543 return NOTIFY_OK;
2544 case NETDEV_DOWN:
2545 qeth_l3_modify_ip(card, addr, false);
2546 return NOTIFY_OK;
2547 default:
2548 return NOTIFY_DONE;
2549 }
2550 }
2551
2552 struct qeth_l3_ip_event_work {
2553 struct work_struct work;
2554 struct qeth_card *card;
2555 struct qeth_ipaddr addr;
2556 };
2557
2558 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2559
2560 static void qeth_l3_add_ip_worker(struct work_struct *work)
2561 {
2562 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2563
2564 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2565 kfree(work);
2566 }
2567
2568 static void qeth_l3_delete_ip_worker(struct work_struct *work)
2569 {
2570 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2571
2572 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2573 kfree(work);
2574 }
2575
2576 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2577 {
2578 if (is_vlan_dev(dev))
2579 dev = vlan_dev_real_dev(dev);
2580 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2581 dev->netdev_ops == &qeth_l3_netdev_ops)
2582 return (struct qeth_card *) dev->ml_priv;
2583 return NULL;
2584 }
2585
2586 static int qeth_l3_ip_event(struct notifier_block *this,
2587 unsigned long event, void *ptr)
2588 {
2589
2590 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2591 struct net_device *dev = ifa->ifa_dev->dev;
2592 struct qeth_ipaddr addr;
2593 struct qeth_card *card;
2594
2595 if (dev_net(dev) != &init_net)
2596 return NOTIFY_DONE;
2597
2598 card = qeth_l3_get_card_from_dev(dev);
2599 if (!card)
2600 return NOTIFY_DONE;
2601 QETH_CARD_TEXT(card, 3, "ipevent");
2602
2603 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2604 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2605 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2606
2607 return qeth_l3_handle_ip_event(card, &addr, event);
2608 }
2609
2610 static struct notifier_block qeth_l3_ip_notifier = {
2611 qeth_l3_ip_event,
2612 NULL,
2613 };
2614
2615 static int qeth_l3_ip6_event(struct notifier_block *this,
2616 unsigned long event, void *ptr)
2617 {
2618 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2619 struct net_device *dev = ifa->idev->dev;
2620 struct qeth_l3_ip_event_work *ip_work;
2621 struct qeth_card *card;
2622
2623 if (event != NETDEV_UP && event != NETDEV_DOWN)
2624 return NOTIFY_DONE;
2625
2626 card = qeth_l3_get_card_from_dev(dev);
2627 if (!card)
2628 return NOTIFY_DONE;
2629 QETH_CARD_TEXT(card, 3, "ip6event");
2630 if (!qeth_is_supported(card, IPA_IPV6))
2631 return NOTIFY_DONE;
2632
2633 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2634 if (!ip_work)
2635 return NOTIFY_DONE;
2636
2637 if (event == NETDEV_UP)
2638 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2639 else
2640 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2641
2642 ip_work->card = card;
2643 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2644 QETH_PROT_IPV6);
2645 ip_work->addr.u.a6.addr = ifa->addr;
2646 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2647
2648 queue_work(card->cmd_wq, &ip_work->work);
2649 return NOTIFY_OK;
2650 }
2651
2652 static struct notifier_block qeth_l3_ip6_notifier = {
2653 qeth_l3_ip6_event,
2654 NULL,
2655 };
2656
2657 static int qeth_l3_register_notifiers(void)
2658 {
2659 int rc;
2660
2661 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2662 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2663 if (rc)
2664 return rc;
2665 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2666 if (rc) {
2667 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2668 return rc;
2669 }
2670 return 0;
2671 }
2672
2673 static void qeth_l3_unregister_notifiers(void)
2674 {
2675 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2676 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2677 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2678 }
2679
2680 static int __init qeth_l3_init(void)
2681 {
2682 pr_info("register layer 3 discipline\n");
2683 return qeth_l3_register_notifiers();
2684 }
2685
2686 static void __exit qeth_l3_exit(void)
2687 {
2688 qeth_l3_unregister_notifiers();
2689 pr_info("unregister layer 3 discipline\n");
2690 }
2691
2692 module_init(qeth_l3_init);
2693 module_exit(qeth_l3_exit);
2694 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2695 MODULE_DESCRIPTION("qeth layer 3 discipline");
2696 MODULE_LICENSE("GPL");
Linux with added FPC-III support