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Linux 4.18.10
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l3_main.c
blob5905dc63e2569baf761611ad25bf3b91786a3235
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/ip6_checksum.h>
37 #include <net/iucv/af_iucv.h>
38 #include <linux/hashtable.h>
39
40 #include "qeth_l3.h"
41
42
43 static int qeth_l3_set_offline(struct ccwgroup_device *);
44 static int qeth_l3_stop(struct net_device *);
45 static void qeth_l3_set_rx_mode(struct net_device *dev);
46 static int qeth_l3_register_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
48 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
49 struct qeth_ipaddr *);
50
51 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
52 {
53 sprintf(buf, "%pI4", addr);
54 }
55
56 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
57 {
58 sprintf(buf, "%pI6", addr);
59 }
60
61 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
62 char *buf)
63 {
64 if (proto == QETH_PROT_IPV4)
65 qeth_l3_ipaddr4_to_string(addr, buf);
66 else if (proto == QETH_PROT_IPV6)
67 qeth_l3_ipaddr6_to_string(addr, buf);
68 }
69
70 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
71 {
72 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
73
74 if (addr)
75 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
76 return addr;
77 }
78
79 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
80 struct qeth_ipaddr *query)
81 {
82 u64 key = qeth_l3_ipaddr_hash(query);
83 struct qeth_ipaddr *addr;
84
85 if (query->is_multicast) {
86 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
87 if (qeth_l3_addr_match_ip(addr, query))
88 return addr;
89 } else {
90 hash_for_each_possible(card->ip_htable, addr, hnode, key)
91 if (qeth_l3_addr_match_ip(addr, query))
92 return addr;
93 }
94 return NULL;
95 }
96
97 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
98 {
99 int i, j;
100 u8 octet;
101
102 for (i = 0; i < len; ++i) {
103 octet = addr[i];
104 for (j = 7; j >= 0; --j) {
105 bits[i*8 + j] = octet & 1;
106 octet >>= 1;
107 }
108 }
109 }
110
111 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
112 struct qeth_ipaddr *addr)
113 {
114 struct qeth_ipato_entry *ipatoe;
115 u8 addr_bits[128] = {0, };
116 u8 ipatoe_bits[128] = {0, };
117 int rc = 0;
118
119 if (!card->ipato.enabled)
120 return 0;
121 if (addr->type != QETH_IP_TYPE_NORMAL)
122 return 0;
123
124 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
125 (addr->proto == QETH_PROT_IPV4)? 4:16);
126 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
127 if (addr->proto != ipatoe->proto)
128 continue;
129 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
130 (ipatoe->proto == QETH_PROT_IPV4) ?
131 4 : 16);
132 if (addr->proto == QETH_PROT_IPV4)
133 rc = !memcmp(addr_bits, ipatoe_bits,
134 min(32, ipatoe->mask_bits));
135 else
136 rc = !memcmp(addr_bits, ipatoe_bits,
137 min(128, ipatoe->mask_bits));
138 if (rc)
139 break;
140 }
141 /* invert? */
142 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
143 rc = !rc;
144 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
145 rc = !rc;
146
147 return rc;
148 }
149
150 static int qeth_l3_delete_ip(struct qeth_card *card,
151 struct qeth_ipaddr *tmp_addr)
152 {
153 int rc = 0;
154 struct qeth_ipaddr *addr;
155
156 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
157 QETH_CARD_TEXT(card, 2, "delrxip");
158 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
159 QETH_CARD_TEXT(card, 2, "delvipa");
160 else
161 QETH_CARD_TEXT(card, 2, "delip");
162
163 if (tmp_addr->proto == QETH_PROT_IPV4)
164 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
165 else {
166 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
167 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
168 }
169
170 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
171 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
172 return -ENOENT;
173
174 addr->ref_counter--;
175 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
176 return rc;
177 if (addr->in_progress)
178 return -EINPROGRESS;
179
180 if (qeth_card_hw_is_reachable(card))
181 rc = qeth_l3_deregister_addr_entry(card, addr);
182
183 hash_del(&addr->hnode);
184 kfree(addr);
185
186 return rc;
187 }
188
189 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
190 {
191 int rc = 0;
192 struct qeth_ipaddr *addr;
193 char buf[40];
194
195 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
196 QETH_CARD_TEXT(card, 2, "addrxip");
197 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
198 QETH_CARD_TEXT(card, 2, "addvipa");
199 else
200 QETH_CARD_TEXT(card, 2, "addip");
201
202 if (tmp_addr->proto == QETH_PROT_IPV4)
203 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
204 else {
205 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
206 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
207 }
208
209 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
210 if (addr) {
211 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
212 return -EADDRINUSE;
213 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
214 addr->ref_counter++;
215 return 0;
216 }
217 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
218 buf);
219 dev_warn(&card->gdev->dev,
220 "Registering IP address %s failed\n", buf);
221 return -EADDRINUSE;
222 } else {
223 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
224 if (!addr)
225 return -ENOMEM;
226
227 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
228 addr->ref_counter = 1;
229
230 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
231 QETH_CARD_TEXT(card, 2, "tkovaddr");
232 addr->ipato = 1;
233 }
234 hash_add(card->ip_htable, &addr->hnode,
235 qeth_l3_ipaddr_hash(addr));
236
237 if (!qeth_card_hw_is_reachable(card)) {
238 addr->disp_flag = QETH_DISP_ADDR_ADD;
239 return 0;
240 }
241
242 /* qeth_l3_register_addr_entry can go to sleep
243 * if we add a IPV4 addr. It is caused by the reason
244 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
245 * Thus we should unlock spinlock, and make a protection
246 * using in_progress variable to indicate that there is
247 * an hardware operation with this IPV4 address
248 */
249 if (addr->proto == QETH_PROT_IPV4) {
250 addr->in_progress = 1;
251 spin_unlock_bh(&card->ip_lock);
252 rc = qeth_l3_register_addr_entry(card, addr);
253 spin_lock_bh(&card->ip_lock);
254 addr->in_progress = 0;
255 } else
256 rc = qeth_l3_register_addr_entry(card, addr);
257
258 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
259 (rc == IPA_RC_LAN_OFFLINE)) {
260 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
261 if (addr->ref_counter < 1) {
262 qeth_l3_deregister_addr_entry(card, addr);
263 hash_del(&addr->hnode);
264 kfree(addr);
265 }
266 } else {
267 hash_del(&addr->hnode);
268 kfree(addr);
269 }
270 }
271 return rc;
272 }
273
274 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
275 {
276 struct qeth_ipaddr *addr;
277 struct hlist_node *tmp;
278 int i;
279
280 QETH_CARD_TEXT(card, 4, "clearip");
281
282 if (recover && card->options.sniffer)
283 return;
284
285 spin_lock_bh(&card->ip_lock);
286
287 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
288 if (!recover) {
289 hash_del(&addr->hnode);
290 kfree(addr);
291 continue;
292 }
293 addr->disp_flag = QETH_DISP_ADDR_ADD;
294 }
295
296 spin_unlock_bh(&card->ip_lock);
297
298 spin_lock_bh(&card->mclock);
299
300 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
301 hash_del(&addr->hnode);
302 kfree(addr);
303 }
304
305 spin_unlock_bh(&card->mclock);
306
307
308 }
309 static void qeth_l3_recover_ip(struct qeth_card *card)
310 {
311 struct qeth_ipaddr *addr;
312 struct hlist_node *tmp;
313 int i;
314 int rc;
315
316 QETH_CARD_TEXT(card, 4, "recovrip");
317
318 spin_lock_bh(&card->ip_lock);
319
320 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
321 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
322 if (addr->proto == QETH_PROT_IPV4) {
323 addr->in_progress = 1;
324 spin_unlock_bh(&card->ip_lock);
325 rc = qeth_l3_register_addr_entry(card, addr);
326 spin_lock_bh(&card->ip_lock);
327 addr->in_progress = 0;
328 } else
329 rc = qeth_l3_register_addr_entry(card, addr);
330
331 if (!rc) {
332 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
333 if (addr->ref_counter < 1)
334 qeth_l3_delete_ip(card, addr);
335 } else {
336 hash_del(&addr->hnode);
337 kfree(addr);
338 }
339 }
340 }
341
342 spin_unlock_bh(&card->ip_lock);
343
344 }
345
346 static int qeth_l3_send_setdelmc(struct qeth_card *card,
347 struct qeth_ipaddr *addr, int ipacmd)
348 {
349 int rc;
350 struct qeth_cmd_buffer *iob;
351 struct qeth_ipa_cmd *cmd;
352
353 QETH_CARD_TEXT(card, 4, "setdelmc");
354
355 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
356 if (!iob)
357 return -ENOMEM;
358 cmd = __ipa_cmd(iob);
359 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
360 if (addr->proto == QETH_PROT_IPV6)
361 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
362 sizeof(struct in6_addr));
363 else
364 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
365
366 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
367
368 return rc;
369 }
370
371 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
372 {
373 int i, j;
374 for (i = 0; i < 16; i++) {
375 j = (len) - (i * 8);
376 if (j >= 8)
377 netmask[i] = 0xff;
378 else if (j > 0)
379 netmask[i] = (u8)(0xFF00 >> j);
380 else
381 netmask[i] = 0;
382 }
383 }
384
385 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
386 {
387 switch (addr->type) {
388 case QETH_IP_TYPE_RXIP:
389 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
390 case QETH_IP_TYPE_VIPA:
391 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
392 QETH_IPA_DELIP_VIPA_FLAG;
393 default:
394 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
395 }
396 }
397
398 static int qeth_l3_send_setdelip(struct qeth_card *card,
399 struct qeth_ipaddr *addr,
400 enum qeth_ipa_cmds ipacmd)
401 {
402 struct qeth_cmd_buffer *iob;
403 struct qeth_ipa_cmd *cmd;
404 __u8 netmask[16];
405 u32 flags;
406
407 QETH_CARD_TEXT(card, 4, "setdelip");
408
409 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
410 if (!iob)
411 return -ENOMEM;
412 cmd = __ipa_cmd(iob);
413
414 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
415 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
416
417 if (addr->proto == QETH_PROT_IPV6) {
418 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
419 sizeof(struct in6_addr));
420 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
421 memcpy(cmd->data.setdelip6.mask, netmask,
422 sizeof(struct in6_addr));
423 cmd->data.setdelip6.flags = flags;
424 } else {
425 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
426 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
427 cmd->data.setdelip4.flags = flags;
428 }
429
430 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
431 }
432
433 static int qeth_l3_send_setrouting(struct qeth_card *card,
434 enum qeth_routing_types type, enum qeth_prot_versions prot)
435 {
436 int rc;
437 struct qeth_ipa_cmd *cmd;
438 struct qeth_cmd_buffer *iob;
439
440 QETH_CARD_TEXT(card, 4, "setroutg");
441 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
442 if (!iob)
443 return -ENOMEM;
444 cmd = __ipa_cmd(iob);
445 cmd->data.setrtg.type = (type);
446 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
447
448 return rc;
449 }
450
451 static int qeth_l3_correct_routing_type(struct qeth_card *card,
452 enum qeth_routing_types *type, enum qeth_prot_versions prot)
453 {
454 if (card->info.type == QETH_CARD_TYPE_IQD) {
455 switch (*type) {
456 case NO_ROUTER:
457 case PRIMARY_CONNECTOR:
458 case SECONDARY_CONNECTOR:
459 case MULTICAST_ROUTER:
460 return 0;
461 default:
462 goto out_inval;
463 }
464 } else {
465 switch (*type) {
466 case NO_ROUTER:
467 case PRIMARY_ROUTER:
468 case SECONDARY_ROUTER:
469 return 0;
470 case MULTICAST_ROUTER:
471 if (qeth_is_ipafunc_supported(card, prot,
472 IPA_OSA_MC_ROUTER))
473 return 0;
474 default:
475 goto out_inval;
476 }
477 }
478 out_inval:
479 *type = NO_ROUTER;
480 return -EINVAL;
481 }
482
483 int qeth_l3_setrouting_v4(struct qeth_card *card)
484 {
485 int rc;
486
487 QETH_CARD_TEXT(card, 3, "setrtg4");
488
489 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
490 QETH_PROT_IPV4);
491 if (rc)
492 return rc;
493
494 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
495 QETH_PROT_IPV4);
496 if (rc) {
497 card->options.route4.type = NO_ROUTER;
498 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
499 " on %s. Type set to 'no router'.\n", rc,
500 QETH_CARD_IFNAME(card));
501 }
502 return rc;
503 }
504
505 int qeth_l3_setrouting_v6(struct qeth_card *card)
506 {
507 int rc = 0;
508
509 QETH_CARD_TEXT(card, 3, "setrtg6");
510
511 if (!qeth_is_supported(card, IPA_IPV6))
512 return 0;
513 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
514 QETH_PROT_IPV6);
515 if (rc)
516 return rc;
517
518 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
519 QETH_PROT_IPV6);
520 if (rc) {
521 card->options.route6.type = NO_ROUTER;
522 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
523 " on %s. Type set to 'no router'.\n", rc,
524 QETH_CARD_IFNAME(card));
525 }
526 return rc;
527 }
528
529 /*
530 * IP address takeover related functions
531 */
532
533 /**
534 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
535 *
536 * Caller must hold ip_lock.
537 */
538 void qeth_l3_update_ipato(struct qeth_card *card)
539 {
540 struct qeth_ipaddr *addr;
541 unsigned int i;
542
543 hash_for_each(card->ip_htable, i, addr, hnode) {
544 if (addr->type != QETH_IP_TYPE_NORMAL)
545 continue;
546 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
547 }
548 }
549
550 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
551 {
552 struct qeth_ipato_entry *ipatoe, *tmp;
553
554 spin_lock_bh(&card->ip_lock);
555
556 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
557 list_del(&ipatoe->entry);
558 kfree(ipatoe);
559 }
560
561 qeth_l3_update_ipato(card);
562 spin_unlock_bh(&card->ip_lock);
563 }
564
565 int qeth_l3_add_ipato_entry(struct qeth_card *card,
566 struct qeth_ipato_entry *new)
567 {
568 struct qeth_ipato_entry *ipatoe;
569 int rc = 0;
570
571 QETH_CARD_TEXT(card, 2, "addipato");
572
573 spin_lock_bh(&card->ip_lock);
574
575 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
576 if (ipatoe->proto != new->proto)
577 continue;
578 if (!memcmp(ipatoe->addr, new->addr,
579 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
580 (ipatoe->mask_bits == new->mask_bits)) {
581 rc = -EEXIST;
582 break;
583 }
584 }
585
586 if (!rc) {
587 list_add_tail(&new->entry, &card->ipato.entries);
588 qeth_l3_update_ipato(card);
589 }
590
591 spin_unlock_bh(&card->ip_lock);
592
593 return rc;
594 }
595
596 int qeth_l3_del_ipato_entry(struct qeth_card *card,
597 enum qeth_prot_versions proto, u8 *addr,
598 int mask_bits)
599 {
600 struct qeth_ipato_entry *ipatoe, *tmp;
601 int rc = -ENOENT;
602
603 QETH_CARD_TEXT(card, 2, "delipato");
604
605 spin_lock_bh(&card->ip_lock);
606
607 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
608 if (ipatoe->proto != proto)
609 continue;
610 if (!memcmp(ipatoe->addr, addr,
611 (proto == QETH_PROT_IPV4)? 4:16) &&
612 (ipatoe->mask_bits == mask_bits)) {
613 list_del(&ipatoe->entry);
614 qeth_l3_update_ipato(card);
615 kfree(ipatoe);
616 rc = 0;
617 }
618 }
619
620 spin_unlock_bh(&card->ip_lock);
621 return rc;
622 }
623
624 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
625 enum qeth_ip_types type,
626 enum qeth_prot_versions proto)
627 {
628 struct qeth_ipaddr addr;
629 int rc;
630
631 qeth_l3_init_ipaddr(&addr, type, proto);
632 if (proto == QETH_PROT_IPV4)
633 memcpy(&addr.u.a4.addr, ip, 4);
634 else
635 memcpy(&addr.u.a6.addr, ip, 16);
636
637 spin_lock_bh(&card->ip_lock);
638 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
639 spin_unlock_bh(&card->ip_lock);
640 return rc;
641 }
642
643 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
644 {
645 struct qeth_ipaddr addr;
646 int rc, i;
647
648 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
649 addr.u.a6.addr.s6_addr[0] = 0xfe;
650 addr.u.a6.addr.s6_addr[1] = 0x80;
651 for (i = 0; i < 8; i++)
652 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
653
654 spin_lock_bh(&card->ip_lock);
655 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
656 spin_unlock_bh(&card->ip_lock);
657 return rc;
658 }
659
660 static int qeth_l3_register_addr_entry(struct qeth_card *card,
661 struct qeth_ipaddr *addr)
662 {
663 char buf[50];
664 int rc = 0;
665 int cnt = 3;
666
667
668 if (addr->proto == QETH_PROT_IPV4) {
669 QETH_CARD_TEXT(card, 2, "setaddr4");
670 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
671 } else if (addr->proto == QETH_PROT_IPV6) {
672 QETH_CARD_TEXT(card, 2, "setaddr6");
673 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
674 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
675 } else {
676 QETH_CARD_TEXT(card, 2, "setaddr?");
677 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
678 }
679 do {
680 if (addr->is_multicast)
681 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
682 else
683 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
684 if (rc)
685 QETH_CARD_TEXT(card, 2, "failed");
686 } while ((--cnt > 0) && rc);
687 if (rc) {
688 QETH_CARD_TEXT(card, 2, "FAILED");
689 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
690 dev_warn(&card->gdev->dev,
691 "Registering IP address %s failed\n", buf);
692 }
693 return rc;
694 }
695
696 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
697 struct qeth_ipaddr *addr)
698 {
699 int rc = 0;
700
701 if (addr->proto == QETH_PROT_IPV4) {
702 QETH_CARD_TEXT(card, 2, "deladdr4");
703 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
704 } else if (addr->proto == QETH_PROT_IPV6) {
705 QETH_CARD_TEXT(card, 2, "deladdr6");
706 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
707 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
708 } else {
709 QETH_CARD_TEXT(card, 2, "deladdr?");
710 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
711 }
712 if (addr->is_multicast)
713 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
714 else
715 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
716 if (rc)
717 QETH_CARD_TEXT(card, 2, "failed");
718
719 return rc;
720 }
721
722 static int qeth_l3_setadapter_parms(struct qeth_card *card)
723 {
724 int rc = 0;
725
726 QETH_DBF_TEXT(SETUP, 2, "setadprm");
727
728 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
729 rc = qeth_setadpparms_change_macaddr(card);
730 if (rc)
731 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
732 " address failed\n");
733 }
734
735 return rc;
736 }
737
738 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
739 {
740 int rc;
741
742 QETH_CARD_TEXT(card, 3, "ipaarp");
743
744 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
745 dev_info(&card->gdev->dev,
746 "ARP processing not supported on %s!\n",
747 QETH_CARD_IFNAME(card));
748 return 0;
749 }
750 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
751 IPA_CMD_ASS_START, 0);
752 if (rc) {
753 dev_warn(&card->gdev->dev,
754 "Starting ARP processing support for %s failed\n",
755 QETH_CARD_IFNAME(card));
756 }
757 return rc;
758 }
759
760 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
761 {
762 int rc;
763
764 QETH_CARD_TEXT(card, 3, "stsrcmac");
765
766 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
767 dev_info(&card->gdev->dev,
768 "Inbound source MAC-address not supported on %s\n",
769 QETH_CARD_IFNAME(card));
770 return -EOPNOTSUPP;
771 }
772
773 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
774 IPA_CMD_ASS_START, 0);
775 if (rc)
776 dev_warn(&card->gdev->dev,
777 "Starting source MAC-address support for %s failed\n",
778 QETH_CARD_IFNAME(card));
779 return rc;
780 }
781
782 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
783 {
784 int rc = 0;
785
786 QETH_CARD_TEXT(card, 3, "strtvlan");
787
788 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
789 dev_info(&card->gdev->dev,
790 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
791 return -EOPNOTSUPP;
792 }
793
794 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
795 IPA_CMD_ASS_START, 0);
796 if (rc) {
797 dev_warn(&card->gdev->dev,
798 "Starting VLAN support for %s failed\n",
799 QETH_CARD_IFNAME(card));
800 } else {
801 dev_info(&card->gdev->dev, "VLAN enabled\n");
802 }
803 return rc;
804 }
805
806 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
807 {
808 int rc;
809
810 QETH_CARD_TEXT(card, 3, "stmcast");
811
812 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
813 dev_info(&card->gdev->dev,
814 "Multicast not supported on %s\n",
815 QETH_CARD_IFNAME(card));
816 return -EOPNOTSUPP;
817 }
818
819 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
820 IPA_CMD_ASS_START, 0);
821 if (rc) {
822 dev_warn(&card->gdev->dev,
823 "Starting multicast support for %s failed\n",
824 QETH_CARD_IFNAME(card));
825 } else {
826 dev_info(&card->gdev->dev, "Multicast enabled\n");
827 card->dev->flags |= IFF_MULTICAST;
828 }
829 return rc;
830 }
831
832 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
833 {
834 int rc;
835
836 QETH_CARD_TEXT(card, 3, "softipv6");
837
838 if (card->info.type == QETH_CARD_TYPE_IQD)
839 goto out;
840
841 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
842 IPA_CMD_ASS_START, 3);
843 if (rc) {
844 dev_err(&card->gdev->dev,
845 "Activating IPv6 support for %s failed\n",
846 QETH_CARD_IFNAME(card));
847 return rc;
848 }
849 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6,
850 IPA_CMD_ASS_START, 0);
851 if (rc) {
852 dev_err(&card->gdev->dev,
853 "Activating IPv6 support for %s failed\n",
854 QETH_CARD_IFNAME(card));
855 return rc;
856 }
857 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
858 IPA_CMD_ASS_START, 0);
859 if (rc) {
860 dev_warn(&card->gdev->dev,
861 "Enabling the passthrough mode for %s failed\n",
862 QETH_CARD_IFNAME(card));
863 return rc;
864 }
865 out:
866 dev_info(&card->gdev->dev, "IPV6 enabled\n");
867 return 0;
868 }
869
870 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
871 {
872 QETH_CARD_TEXT(card, 3, "strtipv6");
873
874 if (!qeth_is_supported(card, IPA_IPV6)) {
875 dev_info(&card->gdev->dev,
876 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
877 return 0;
878 }
879 return qeth_l3_softsetup_ipv6(card);
880 }
881
882 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
883 {
884 int rc;
885
886 QETH_CARD_TEXT(card, 3, "stbrdcst");
887 card->info.broadcast_capable = 0;
888 if (!qeth_is_supported(card, IPA_FILTERING)) {
889 dev_info(&card->gdev->dev,
890 "Broadcast not supported on %s\n",
891 QETH_CARD_IFNAME(card));
892 rc = -EOPNOTSUPP;
893 goto out;
894 }
895 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
896 IPA_CMD_ASS_START, 0);
897 if (rc) {
898 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
899 "%s failed\n", QETH_CARD_IFNAME(card));
900 goto out;
901 }
902
903 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
904 IPA_CMD_ASS_CONFIGURE, 1);
905 if (rc) {
906 dev_warn(&card->gdev->dev,
907 "Setting up broadcast filtering for %s failed\n",
908 QETH_CARD_IFNAME(card));
909 goto out;
910 }
911 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
912 dev_info(&card->gdev->dev, "Broadcast enabled\n");
913 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
914 IPA_CMD_ASS_ENABLE, 1);
915 if (rc) {
916 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
917 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
918 goto out;
919 }
920 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
921 out:
922 if (card->info.broadcast_capable)
923 card->dev->flags |= IFF_BROADCAST;
924 else
925 card->dev->flags &= ~IFF_BROADCAST;
926 return rc;
927 }
928
929 static int qeth_l3_start_ipassists(struct qeth_card *card)
930 {
931 QETH_CARD_TEXT(card, 3, "strtipas");
932
933 if (qeth_set_access_ctrl_online(card, 0))
934 return -EIO;
935 qeth_l3_start_ipa_arp_processing(card); /* go on*/
936 qeth_l3_start_ipa_source_mac(card); /* go on*/
937 qeth_l3_start_ipa_vlan(card); /* go on*/
938 qeth_l3_start_ipa_multicast(card); /* go on*/
939 qeth_l3_start_ipa_ipv6(card); /* go on*/
940 qeth_l3_start_ipa_broadcast(card); /* go on*/
941 return 0;
942 }
943
944 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
945 struct qeth_reply *reply, unsigned long data)
946 {
947 struct qeth_ipa_cmd *cmd;
948
949 cmd = (struct qeth_ipa_cmd *) data;
950 if (cmd->hdr.return_code == 0)
951 ether_addr_copy(card->dev->dev_addr,
952 cmd->data.create_destroy_addr.unique_id);
953 else
954 eth_random_addr(card->dev->dev_addr);
955
956 return 0;
957 }
958
959 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
960 {
961 int rc = 0;
962 struct qeth_cmd_buffer *iob;
963 struct qeth_ipa_cmd *cmd;
964
965 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
966
967 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
968 QETH_PROT_IPV6);
969 if (!iob)
970 return -ENOMEM;
971 cmd = __ipa_cmd(iob);
972 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
973 card->info.unique_id;
974
975 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
976 NULL);
977 return rc;
978 }
979
980 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
981 struct qeth_reply *reply, unsigned long data)
982 {
983 struct qeth_ipa_cmd *cmd;
984
985 cmd = (struct qeth_ipa_cmd *) data;
986 if (cmd->hdr.return_code == 0)
987 card->info.unique_id = *((__u16 *)
988 &cmd->data.create_destroy_addr.unique_id[6]);
989 else {
990 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
991 UNIQUE_ID_NOT_BY_CARD;
992 dev_warn(&card->gdev->dev, "The network adapter failed to "
993 "generate a unique ID\n");
994 }
995 return 0;
996 }
997
998 static int qeth_l3_get_unique_id(struct qeth_card *card)
999 {
1000 int rc = 0;
1001 struct qeth_cmd_buffer *iob;
1002 struct qeth_ipa_cmd *cmd;
1003
1004 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1005
1006 if (!qeth_is_supported(card, IPA_IPV6)) {
1007 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1008 UNIQUE_ID_NOT_BY_CARD;
1009 return 0;
1010 }
1011
1012 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1013 QETH_PROT_IPV6);
1014 if (!iob)
1015 return -ENOMEM;
1016 cmd = __ipa_cmd(iob);
1017 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1018 card->info.unique_id;
1019
1020 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1021 return rc;
1022 }
1023
1024 static int
1025 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1026 unsigned long data)
1027 {
1028 struct qeth_ipa_cmd *cmd;
1029 __u16 rc;
1030
1031 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1032
1033 cmd = (struct qeth_ipa_cmd *)data;
1034 rc = cmd->hdr.return_code;
1035 if (rc)
1036 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1037 switch (cmd->data.diagass.action) {
1038 case QETH_DIAGS_CMD_TRACE_QUERY:
1039 break;
1040 case QETH_DIAGS_CMD_TRACE_DISABLE:
1041 switch (rc) {
1042 case 0:
1043 case IPA_RC_INVALID_SUBCMD:
1044 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1045 dev_info(&card->gdev->dev, "The HiperSockets network "
1046 "traffic analyzer is deactivated\n");
1047 break;
1048 default:
1049 break;
1050 }
1051 break;
1052 case QETH_DIAGS_CMD_TRACE_ENABLE:
1053 switch (rc) {
1054 case 0:
1055 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1056 dev_info(&card->gdev->dev, "The HiperSockets network "
1057 "traffic analyzer is activated\n");
1058 break;
1059 case IPA_RC_HARDWARE_AUTH_ERROR:
1060 dev_warn(&card->gdev->dev, "The device is not "
1061 "authorized to run as a HiperSockets network "
1062 "traffic analyzer\n");
1063 break;
1064 case IPA_RC_TRACE_ALREADY_ACTIVE:
1065 dev_warn(&card->gdev->dev, "A HiperSockets "
1066 "network traffic analyzer is already "
1067 "active in the HiperSockets LAN\n");
1068 break;
1069 default:
1070 break;
1071 }
1072 break;
1073 default:
1074 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1075 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1076 }
1077
1078 return 0;
1079 }
1080
1081 static int
1082 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1083 {
1084 struct qeth_cmd_buffer *iob;
1085 struct qeth_ipa_cmd *cmd;
1086
1087 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1088
1089 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1090 if (!iob)
1091 return -ENOMEM;
1092 cmd = __ipa_cmd(iob);
1093 cmd->data.diagass.subcmd_len = 16;
1094 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1095 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1096 cmd->data.diagass.action = diags_cmd;
1097 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1098 }
1099
1100 static void
1101 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1102 {
1103 struct ip_mc_list *im4;
1104 struct qeth_ipaddr *tmp, *ipm;
1105
1106 QETH_CARD_TEXT(card, 4, "addmc");
1107
1108 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1109 if (!tmp)
1110 return;
1111
1112 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1113 im4 = rcu_dereference(im4->next_rcu)) {
1114 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1115 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1116 tmp->is_multicast = 1;
1117
1118 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1119 if (ipm) {
1120 /* for mcast, by-IP match means full match */
1121 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1122 } else {
1123 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1124 if (!ipm)
1125 continue;
1126 ether_addr_copy(ipm->mac, tmp->mac);
1127 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1128 ipm->is_multicast = 1;
1129 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1130 hash_add(card->ip_mc_htable,
1131 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1132 }
1133 }
1134
1135 kfree(tmp);
1136 }
1137
1138 /* called with rcu_read_lock */
1139 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1140 {
1141 struct in_device *in_dev;
1142 u16 vid;
1143
1144 QETH_CARD_TEXT(card, 4, "addmcvl");
1145
1146 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1147 return;
1148
1149 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1150 struct net_device *netdev;
1151
1152 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1153 vid);
1154 if (netdev == NULL ||
1155 !(netdev->flags & IFF_UP))
1156 continue;
1157 in_dev = __in_dev_get_rcu(netdev);
1158 if (!in_dev)
1159 continue;
1160 qeth_l3_add_mc_to_hash(card, in_dev);
1161 }
1162 }
1163
1164 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1165 {
1166 struct in_device *in4_dev;
1167
1168 QETH_CARD_TEXT(card, 4, "chkmcv4");
1169
1170 rcu_read_lock();
1171 in4_dev = __in_dev_get_rcu(card->dev);
1172 if (in4_dev == NULL)
1173 goto unlock;
1174 qeth_l3_add_mc_to_hash(card, in4_dev);
1175 qeth_l3_add_vlan_mc(card);
1176 unlock:
1177 rcu_read_unlock();
1178 }
1179
1180 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1181 struct inet6_dev *in6_dev)
1182 {
1183 struct qeth_ipaddr *ipm;
1184 struct ifmcaddr6 *im6;
1185 struct qeth_ipaddr *tmp;
1186
1187 QETH_CARD_TEXT(card, 4, "addmc6");
1188
1189 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1190 if (!tmp)
1191 return;
1192
1193 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1194 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1195 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1196 sizeof(struct in6_addr));
1197 tmp->is_multicast = 1;
1198
1199 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1200 if (ipm) {
1201 /* for mcast, by-IP match means full match */
1202 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1203 continue;
1204 }
1205
1206 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1207 if (!ipm)
1208 continue;
1209
1210 ether_addr_copy(ipm->mac, tmp->mac);
1211 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1212 sizeof(struct in6_addr));
1213 ipm->is_multicast = 1;
1214 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1215 hash_add(card->ip_mc_htable,
1216 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1217
1218 }
1219 kfree(tmp);
1220 }
1221
1222 /* called with rcu_read_lock */
1223 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1224 {
1225 struct inet6_dev *in_dev;
1226 u16 vid;
1227
1228 QETH_CARD_TEXT(card, 4, "admc6vl");
1229
1230 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1231 return;
1232
1233 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1234 struct net_device *netdev;
1235
1236 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1237 vid);
1238 if (netdev == NULL ||
1239 !(netdev->flags & IFF_UP))
1240 continue;
1241 in_dev = in6_dev_get(netdev);
1242 if (!in_dev)
1243 continue;
1244 read_lock_bh(&in_dev->lock);
1245 qeth_l3_add_mc6_to_hash(card, in_dev);
1246 read_unlock_bh(&in_dev->lock);
1247 in6_dev_put(in_dev);
1248 }
1249 }
1250
1251 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1252 {
1253 struct inet6_dev *in6_dev;
1254
1255 QETH_CARD_TEXT(card, 4, "chkmcv6");
1256
1257 if (!qeth_is_supported(card, IPA_IPV6))
1258 return ;
1259 in6_dev = in6_dev_get(card->dev);
1260 if (!in6_dev)
1261 return;
1262
1263 rcu_read_lock();
1264 read_lock_bh(&in6_dev->lock);
1265 qeth_l3_add_mc6_to_hash(card, in6_dev);
1266 qeth_l3_add_vlan_mc6(card);
1267 read_unlock_bh(&in6_dev->lock);
1268 rcu_read_unlock();
1269 in6_dev_put(in6_dev);
1270 }
1271
1272 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1273 __be16 proto, u16 vid)
1274 {
1275 struct qeth_card *card = dev->ml_priv;
1276
1277 set_bit(vid, card->active_vlans);
1278 return 0;
1279 }
1280
1281 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1282 __be16 proto, u16 vid)
1283 {
1284 struct qeth_card *card = dev->ml_priv;
1285
1286 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1287
1288 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1289 QETH_CARD_TEXT(card, 3, "kidREC");
1290 return 0;
1291 }
1292 clear_bit(vid, card->active_vlans);
1293 qeth_l3_set_rx_mode(dev);
1294 return 0;
1295 }
1296
1297 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1298 struct qeth_hdr *hdr)
1299 {
1300 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1301 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1302 ETH_P_IP;
1303 unsigned char tg_addr[ETH_ALEN];
1304
1305 skb_reset_network_header(skb);
1306 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1307 case QETH_CAST_MULTICAST:
1308 if (prot == ETH_P_IP)
1309 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1310 else
1311 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1312
1313 card->stats.multicast++;
1314 break;
1315 case QETH_CAST_BROADCAST:
1316 ether_addr_copy(tg_addr, card->dev->broadcast);
1317 card->stats.multicast++;
1318 break;
1319 default:
1320 if (card->options.sniffer)
1321 skb->pkt_type = PACKET_OTHERHOST;
1322 ether_addr_copy(tg_addr, card->dev->dev_addr);
1323 }
1324
1325 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1326 card->dev->header_ops->create(skb, card->dev, prot,
1327 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1328 skb->len);
1329 else
1330 card->dev->header_ops->create(skb, card->dev, prot,
1331 tg_addr, "FAKELL", skb->len);
1332 }
1333
1334 skb->protocol = eth_type_trans(skb, card->dev);
1335
1336 /* copy VLAN tag from hdr into skb */
1337 if (!card->options.sniffer &&
1338 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1339 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1340 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1341 hdr->hdr.l3.vlan_id :
1342 hdr->hdr.l3.next_hop.rx.vlan_id;
1343 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1344 }
1345
1346 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1347 }
1348
1349 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1350 int budget, int *done)
1351 {
1352 int work_done = 0;
1353 struct sk_buff *skb;
1354 struct qeth_hdr *hdr;
1355 unsigned int len;
1356 __u16 magic;
1357
1358 *done = 0;
1359 WARN_ON_ONCE(!budget);
1360 while (budget) {
1361 skb = qeth_core_get_next_skb(card,
1362 &card->qdio.in_q->bufs[card->rx.b_index],
1363 &card->rx.b_element, &card->rx.e_offset, &hdr);
1364 if (!skb) {
1365 *done = 1;
1366 break;
1367 }
1368 switch (hdr->hdr.l3.id) {
1369 case QETH_HEADER_TYPE_LAYER3:
1370 magic = *(__u16 *)skb->data;
1371 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1372 (magic == ETH_P_AF_IUCV)) {
1373 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1374 len = skb->len;
1375 card->dev->header_ops->create(skb, card->dev, 0,
1376 card->dev->dev_addr, "FAKELL", len);
1377 skb_reset_mac_header(skb);
1378 netif_receive_skb(skb);
1379 } else {
1380 qeth_l3_rebuild_skb(card, skb, hdr);
1381 len = skb->len;
1382 napi_gro_receive(&card->napi, skb);
1383 }
1384 break;
1385 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1386 skb->protocol = eth_type_trans(skb, skb->dev);
1387 len = skb->len;
1388 netif_receive_skb(skb);
1389 break;
1390 default:
1391 dev_kfree_skb_any(skb);
1392 QETH_CARD_TEXT(card, 3, "inbunkno");
1393 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1394 continue;
1395 }
1396 work_done++;
1397 budget--;
1398 card->stats.rx_packets++;
1399 card->stats.rx_bytes += len;
1400 }
1401 return work_done;
1402 }
1403
1404 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1405 {
1406 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1407 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1408
1409 qeth_set_allowed_threads(card, 0, 1);
1410 if (card->options.sniffer &&
1411 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1412 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1413 if (card->read.state == CH_STATE_UP &&
1414 card->write.state == CH_STATE_UP &&
1415 (card->state == CARD_STATE_UP)) {
1416 if (recovery_mode)
1417 qeth_l3_stop(card->dev);
1418 else {
1419 rtnl_lock();
1420 dev_close(card->dev);
1421 rtnl_unlock();
1422 }
1423 card->state = CARD_STATE_SOFTSETUP;
1424 }
1425 if (card->state == CARD_STATE_SOFTSETUP) {
1426 qeth_l3_clear_ip_htable(card, 1);
1427 qeth_clear_ipacmd_list(card);
1428 card->state = CARD_STATE_HARDSETUP;
1429 }
1430 if (card->state == CARD_STATE_HARDSETUP) {
1431 qeth_qdio_clear_card(card, 0);
1432 qeth_clear_qdio_buffers(card);
1433 qeth_clear_working_pool_list(card);
1434 card->state = CARD_STATE_DOWN;
1435 }
1436 if (card->state == CARD_STATE_DOWN) {
1437 qeth_clear_cmd_buffers(&card->read);
1438 qeth_clear_cmd_buffers(&card->write);
1439 }
1440 }
1441
1442 /*
1443 * test for and Switch promiscuous mode (on or off)
1444 * either for guestlan or HiperSocket Sniffer
1445 */
1446 static void
1447 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1448 {
1449 struct net_device *dev = card->dev;
1450
1451 if (((dev->flags & IFF_PROMISC) &&
1452 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1453 (!(dev->flags & IFF_PROMISC) &&
1454 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1455 return;
1456
1457 if (card->info.guestlan) { /* Guestlan trace */
1458 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1459 qeth_setadp_promisc_mode(card);
1460 } else if (card->options.sniffer && /* HiperSockets trace */
1461 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1462 if (dev->flags & IFF_PROMISC) {
1463 QETH_CARD_TEXT(card, 3, "+promisc");
1464 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1465 } else {
1466 QETH_CARD_TEXT(card, 3, "-promisc");
1467 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1468 }
1469 }
1470 }
1471
1472 static void qeth_l3_set_rx_mode(struct net_device *dev)
1473 {
1474 struct qeth_card *card = dev->ml_priv;
1475 struct qeth_ipaddr *addr;
1476 struct hlist_node *tmp;
1477 int i, rc;
1478
1479 QETH_CARD_TEXT(card, 3, "setmulti");
1480 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1481 (card->state != CARD_STATE_UP))
1482 return;
1483 if (!card->options.sniffer) {
1484 spin_lock_bh(&card->mclock);
1485
1486 qeth_l3_add_multicast_ipv4(card);
1487 qeth_l3_add_multicast_ipv6(card);
1488
1489 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1490 switch (addr->disp_flag) {
1491 case QETH_DISP_ADDR_DELETE:
1492 rc = qeth_l3_deregister_addr_entry(card, addr);
1493 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) {
1494 hash_del(&addr->hnode);
1495 kfree(addr);
1496 }
1497 break;
1498 case QETH_DISP_ADDR_ADD:
1499 rc = qeth_l3_register_addr_entry(card, addr);
1500 if (rc && rc != IPA_RC_LAN_OFFLINE) {
1501 hash_del(&addr->hnode);
1502 kfree(addr);
1503 break;
1504 }
1505 addr->ref_counter = 1;
1506 /* fall through */
1507 default:
1508 /* for next call to set_rx_mode(): */
1509 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1510 }
1511 }
1512
1513 spin_unlock_bh(&card->mclock);
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 const char *qeth_l3_arp_get_error_cause(int *rc)
1522 {
1523 switch (*rc) {
1524 case QETH_IPA_ARP_RC_FAILED:
1525 *rc = -EIO;
1526 return "operation failed";
1527 case QETH_IPA_ARP_RC_NOTSUPP:
1528 *rc = -EOPNOTSUPP;
1529 return "operation not supported";
1530 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1531 *rc = -EINVAL;
1532 return "argument out of range";
1533 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1534 *rc = -EOPNOTSUPP;
1535 return "query operation not supported";
1536 case QETH_IPA_ARP_RC_Q_NO_DATA:
1537 *rc = -ENOENT;
1538 return "no query data available";
1539 default:
1540 return "unknown error";
1541 }
1542 }
1543
1544 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1545 {
1546 int tmp;
1547 int rc;
1548
1549 QETH_CARD_TEXT(card, 3, "arpstnoe");
1550
1551 /*
1552 * currently GuestLAN only supports the ARP assist function
1553 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1554 * thus we say EOPNOTSUPP for this ARP function
1555 */
1556 if (card->info.guestlan)
1557 return -EOPNOTSUPP;
1558 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1559 return -EOPNOTSUPP;
1560 }
1561 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1562 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1563 no_entries);
1564 if (rc) {
1565 tmp = rc;
1566 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
1567 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
1568 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1569 }
1570 return rc;
1571 }
1572
1573 static __u32 get_arp_entry_size(struct qeth_card *card,
1574 struct qeth_arp_query_data *qdata,
1575 struct qeth_arp_entrytype *type, __u8 strip_entries)
1576 {
1577 __u32 rc;
1578 __u8 is_hsi;
1579
1580 is_hsi = qdata->reply_bits == 5;
1581 if (type->ip == QETHARP_IP_ADDR_V4) {
1582 QETH_CARD_TEXT(card, 4, "arpev4");
1583 if (strip_entries) {
1584 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1585 sizeof(struct qeth_arp_qi_entry7_short);
1586 } else {
1587 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1588 sizeof(struct qeth_arp_qi_entry7);
1589 }
1590 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1591 QETH_CARD_TEXT(card, 4, "arpev6");
1592 if (strip_entries) {
1593 rc = is_hsi ?
1594 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1595 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1596 } else {
1597 rc = is_hsi ?
1598 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1599 sizeof(struct qeth_arp_qi_entry7_ipv6);
1600 }
1601 } else {
1602 QETH_CARD_TEXT(card, 4, "arpinv");
1603 rc = 0;
1604 }
1605
1606 return rc;
1607 }
1608
1609 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1610 {
1611 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1612 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1613 }
1614
1615 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1616 struct qeth_reply *reply, unsigned long data)
1617 {
1618 struct qeth_ipa_cmd *cmd;
1619 struct qeth_arp_query_data *qdata;
1620 struct qeth_arp_query_info *qinfo;
1621 int i;
1622 int e;
1623 int entrybytes_done;
1624 int stripped_bytes;
1625 __u8 do_strip_entries;
1626
1627 QETH_CARD_TEXT(card, 3, "arpquecb");
1628
1629 qinfo = (struct qeth_arp_query_info *) reply->param;
1630 cmd = (struct qeth_ipa_cmd *) data;
1631 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1632 if (cmd->hdr.return_code) {
1633 QETH_CARD_TEXT(card, 4, "arpcberr");
1634 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1635 return 0;
1636 }
1637 if (cmd->data.setassparms.hdr.return_code) {
1638 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1639 QETH_CARD_TEXT(card, 4, "setaperr");
1640 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1641 return 0;
1642 }
1643 qdata = &cmd->data.setassparms.data.query_arp;
1644 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1645
1646 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1647 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1648 entrybytes_done = 0;
1649 for (e = 0; e < qdata->no_entries; ++e) {
1650 char *cur_entry;
1651 __u32 esize;
1652 struct qeth_arp_entrytype *etype;
1653
1654 cur_entry = &qdata->data + entrybytes_done;
1655 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1656 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1657 QETH_CARD_TEXT(card, 4, "pmis");
1658 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1659 break;
1660 }
1661 esize = get_arp_entry_size(card, qdata, etype,
1662 do_strip_entries);
1663 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1664 if (!esize)
1665 break;
1666
1667 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1668 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
1669 cmd->hdr.return_code = IPA_RC_ENOMEM;
1670 goto out_error;
1671 }
1672
1673 memcpy(qinfo->udata + qinfo->udata_offset,
1674 &qdata->data + entrybytes_done + stripped_bytes,
1675 esize);
1676 entrybytes_done += esize + stripped_bytes;
1677 qinfo->udata_offset += esize;
1678 ++qinfo->no_entries;
1679 }
1680 /* check if all replies received ... */
1681 if (cmd->data.setassparms.hdr.seq_no <
1682 cmd->data.setassparms.hdr.number_of_replies)
1683 return 1;
1684 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1685 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1686 /* keep STRIP_ENTRIES flag so the user program can distinguish
1687 * stripped entries from normal ones */
1688 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1689 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1690 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1691 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1692 return 0;
1693 out_error:
1694 i = 0;
1695 memcpy(qinfo->udata, &i, 4);
1696 return 0;
1697 }
1698
1699 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
1700 struct qeth_cmd_buffer *iob, int len,
1701 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1702 unsigned long),
1703 void *reply_param)
1704 {
1705 QETH_CARD_TEXT(card, 4, "sendarp");
1706
1707 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
1708 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
1709 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
1710 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
1711 reply_cb, reply_param);
1712 }
1713
1714 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1715 enum qeth_prot_versions prot,
1716 struct qeth_arp_query_info *qinfo)
1717 {
1718 struct qeth_cmd_buffer *iob;
1719 struct qeth_ipa_cmd *cmd;
1720 int tmp;
1721 int rc;
1722
1723 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1724
1725 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1726 IPA_CMD_ASS_ARP_QUERY_INFO,
1727 sizeof(struct qeth_arp_query_data)
1728 - sizeof(char),
1729 prot);
1730 if (!iob)
1731 return -ENOMEM;
1732 cmd = __ipa_cmd(iob);
1733 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1734 cmd->data.setassparms.data.query_arp.reply_bits = 0;
1735 cmd->data.setassparms.data.query_arp.no_entries = 0;
1736 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
1737 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
1738 qeth_l3_arp_query_cb, (void *)qinfo);
1739 if (rc) {
1740 tmp = rc;
1741 QETH_DBF_MESSAGE(2,
1742 "Error while querying ARP cache on %s: %s "
1743 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1744 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1745 }
1746
1747 return rc;
1748 }
1749
1750 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1751 {
1752 struct qeth_arp_query_info qinfo = {0, };
1753 int rc;
1754
1755 QETH_CARD_TEXT(card, 3, "arpquery");
1756
1757 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1758 IPA_ARP_PROCESSING)) {
1759 QETH_CARD_TEXT(card, 3, "arpqnsup");
1760 rc = -EOPNOTSUPP;
1761 goto out;
1762 }
1763 /* get size of userspace buffer and mask_bits -> 6 bytes */
1764 if (copy_from_user(&qinfo, udata, 6)) {
1765 rc = -EFAULT;
1766 goto out;
1767 }
1768 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1769 if (!qinfo.udata) {
1770 rc = -ENOMEM;
1771 goto out;
1772 }
1773 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1774 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1775 if (rc) {
1776 if (copy_to_user(udata, qinfo.udata, 4))
1777 rc = -EFAULT;
1778 goto free_and_out;
1779 }
1780 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1781 /* fails in case of GuestLAN QDIO mode */
1782 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1783 }
1784 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1785 QETH_CARD_TEXT(card, 4, "qactf");
1786 rc = -EFAULT;
1787 goto free_and_out;
1788 }
1789 QETH_CARD_TEXT(card, 4, "qacts");
1790
1791 free_and_out:
1792 kfree(qinfo.udata);
1793 out:
1794 return rc;
1795 }
1796
1797 static int qeth_l3_arp_add_entry(struct qeth_card *card,
1798 struct qeth_arp_cache_entry *entry)
1799 {
1800 struct qeth_cmd_buffer *iob;
1801 char buf[16];
1802 int tmp;
1803 int rc;
1804
1805 QETH_CARD_TEXT(card, 3, "arpadent");
1806
1807 /*
1808 * currently GuestLAN only supports the ARP assist function
1809 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1810 * thus we say EOPNOTSUPP for this ARP function
1811 */
1812 if (card->info.guestlan)
1813 return -EOPNOTSUPP;
1814 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1815 return -EOPNOTSUPP;
1816 }
1817
1818 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1819 IPA_CMD_ASS_ARP_ADD_ENTRY,
1820 sizeof(struct qeth_arp_cache_entry),
1821 QETH_PROT_IPV4);
1822 if (!iob)
1823 return -ENOMEM;
1824 rc = qeth_send_setassparms(card, iob,
1825 sizeof(struct qeth_arp_cache_entry),
1826 (unsigned long) entry,
1827 qeth_setassparms_cb, NULL);
1828 if (rc) {
1829 tmp = rc;
1830 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1831 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
1832 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1833 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1834 }
1835 return rc;
1836 }
1837
1838 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
1839 struct qeth_arp_cache_entry *entry)
1840 {
1841 struct qeth_cmd_buffer *iob;
1842 char buf[16] = {0, };
1843 int tmp;
1844 int rc;
1845
1846 QETH_CARD_TEXT(card, 3, "arprment");
1847
1848 /*
1849 * currently GuestLAN only supports the ARP assist function
1850 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1851 * thus we say EOPNOTSUPP for this ARP function
1852 */
1853 if (card->info.guestlan)
1854 return -EOPNOTSUPP;
1855 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1856 return -EOPNOTSUPP;
1857 }
1858 memcpy(buf, entry, 12);
1859 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1860 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
1861 12,
1862 QETH_PROT_IPV4);
1863 if (!iob)
1864 return -ENOMEM;
1865 rc = qeth_send_setassparms(card, iob,
1866 12, (unsigned long)buf,
1867 qeth_setassparms_cb, NULL);
1868 if (rc) {
1869 tmp = rc;
1870 memset(buf, 0, 16);
1871 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1872 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
1873 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1874 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1875 }
1876 return rc;
1877 }
1878
1879 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1880 {
1881 int rc;
1882 int tmp;
1883
1884 QETH_CARD_TEXT(card, 3, "arpflush");
1885
1886 /*
1887 * currently GuestLAN only supports the ARP assist function
1888 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1889 * thus we say EOPNOTSUPP for this ARP function
1890 */
1891 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
1892 return -EOPNOTSUPP;
1893 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1894 return -EOPNOTSUPP;
1895 }
1896 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1897 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
1898 if (rc) {
1899 tmp = rc;
1900 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
1901 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1902 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1903 }
1904 return rc;
1905 }
1906
1907 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1908 {
1909 struct qeth_card *card = dev->ml_priv;
1910 struct qeth_arp_cache_entry arp_entry;
1911 int rc = 0;
1912
1913 switch (cmd) {
1914 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1915 if (!capable(CAP_NET_ADMIN)) {
1916 rc = -EPERM;
1917 break;
1918 }
1919 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1920 break;
1921 case SIOC_QETH_ARP_QUERY_INFO:
1922 if (!capable(CAP_NET_ADMIN)) {
1923 rc = -EPERM;
1924 break;
1925 }
1926 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1927 break;
1928 case SIOC_QETH_ARP_ADD_ENTRY:
1929 if (!capable(CAP_NET_ADMIN)) {
1930 rc = -EPERM;
1931 break;
1932 }
1933 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1934 sizeof(struct qeth_arp_cache_entry)))
1935 rc = -EFAULT;
1936 else
1937 rc = qeth_l3_arp_add_entry(card, &arp_entry);
1938 break;
1939 case SIOC_QETH_ARP_REMOVE_ENTRY:
1940 if (!capable(CAP_NET_ADMIN)) {
1941 rc = -EPERM;
1942 break;
1943 }
1944 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1945 sizeof(struct qeth_arp_cache_entry)))
1946 rc = -EFAULT;
1947 else
1948 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
1949 break;
1950 case SIOC_QETH_ARP_FLUSH_CACHE:
1951 if (!capable(CAP_NET_ADMIN)) {
1952 rc = -EPERM;
1953 break;
1954 }
1955 rc = qeth_l3_arp_flush_cache(card);
1956 break;
1957 default:
1958 rc = -EOPNOTSUPP;
1959 }
1960 return rc;
1961 }
1962
1963 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1964 {
1965 struct neighbour *n = NULL;
1966 struct dst_entry *dst;
1967
1968 rcu_read_lock();
1969 dst = skb_dst(skb);
1970 if (dst)
1971 n = dst_neigh_lookup_skb(dst, skb);
1972 if (n) {
1973 int cast_type = n->type;
1974
1975 rcu_read_unlock();
1976 neigh_release(n);
1977 if ((cast_type == RTN_BROADCAST) ||
1978 (cast_type == RTN_MULTICAST) ||
1979 (cast_type == RTN_ANYCAST))
1980 return cast_type;
1981 return RTN_UNSPEC;
1982 }
1983 rcu_read_unlock();
1984
1985 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1986 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
1987 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1988 RTN_MULTICAST : RTN_UNSPEC;
1989 else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
1990 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1991 RTN_MULTICAST : RTN_UNSPEC;
1992
1993 /* ... and MAC address */
1994 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, skb->dev->broadcast))
1995 return RTN_BROADCAST;
1996 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
1997 return RTN_MULTICAST;
1998
1999 /* default to unicast */
2000 return RTN_UNSPEC;
2001 }
2002
2003 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2004 struct qeth_hdr *hdr, struct sk_buff *skb)
2005 {
2006 char daddr[16];
2007 struct af_iucv_trans_hdr *iucv_hdr;
2008
2009 memset(hdr, 0, sizeof(struct qeth_hdr));
2010 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2011 hdr->hdr.l3.ext_flags = 0;
2012 hdr->hdr.l3.length = skb->len - ETH_HLEN;
2013 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2014
2015 iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2016 memset(daddr, 0, sizeof(daddr));
2017 daddr[0] = 0xfe;
2018 daddr[1] = 0x80;
2019 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2020 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16);
2021 }
2022
2023 static u8 qeth_l3_cast_type_to_flag(int cast_type)
2024 {
2025 if (cast_type == RTN_MULTICAST)
2026 return QETH_CAST_MULTICAST;
2027 if (cast_type == RTN_ANYCAST)
2028 return QETH_CAST_ANYCAST;
2029 if (cast_type == RTN_BROADCAST)
2030 return QETH_CAST_BROADCAST;
2031 return QETH_CAST_UNICAST;
2032 }
2033
2034 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2035 struct sk_buff *skb, int ipv, int cast_type,
2036 unsigned int data_len)
2037 {
2038 memset(hdr, 0, sizeof(struct qeth_hdr));
2039 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2040 hdr->hdr.l3.length = data_len;
2041
2042 /*
2043 * before we're going to overwrite this location with next hop ip.
2044 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2045 */
2046 if (skb_vlan_tag_present(skb)) {
2047 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2048 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2049 else
2050 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2051 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2052 }
2053
2054 /* OSA only: */
2055 if (!ipv) {
2056 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
2057 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
2058 skb->dev->broadcast))
2059 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
2060 else
2061 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
2062 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
2063 return;
2064 }
2065
2066 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
2067 rcu_read_lock();
2068 if (ipv == 4) {
2069 struct rtable *rt = skb_rtable(skb);
2070
2071 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2072 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2073 ip_hdr(skb)->daddr;
2074 } else {
2075 /* IPv6 */
2076 const struct rt6_info *rt = skb_rt6_info(skb);
2077 const struct in6_addr *next_hop;
2078
2079 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2080 next_hop = &rt->rt6i_gateway;
2081 else
2082 next_hop = &ipv6_hdr(skb)->daddr;
2083 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16);
2084
2085 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2086 if (card->info.type != QETH_CARD_TYPE_IQD)
2087 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2088 }
2089 rcu_read_unlock();
2090 }
2091
2092 static void qeth_tso_fill_header(struct qeth_card *card,
2093 struct qeth_hdr *qhdr, struct sk_buff *skb)
2094 {
2095 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2096 struct tcphdr *tcph = tcp_hdr(skb);
2097 struct iphdr *iph = ip_hdr(skb);
2098 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2099
2100 /*fix header to TSO values ...*/
2101 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2102 /*set values which are fix for the first approach ...*/
2103 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2104 hdr->ext.imb_hdr_no = 1;
2105 hdr->ext.hdr_type = 1;
2106 hdr->ext.hdr_version = 1;
2107 hdr->ext.hdr_len = 28;
2108 /*insert non-fix values */
2109 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2110 hdr->ext.dg_hdr_len = (__u16)(ip_hdrlen(skb) + tcp_hdrlen(skb));
2111 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2112 sizeof(struct qeth_hdr_tso));
2113 tcph->check = 0;
2114 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2115 ip6h->payload_len = 0;
2116 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2117 0, IPPROTO_TCP, 0);
2118 } else {
2119 /*OSA want us to set these values ...*/
2120 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2121 0, IPPROTO_TCP, 0);
2122 iph->tot_len = 0;
2123 iph->check = 0;
2124 }
2125 }
2126
2127 /**
2128 * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2129 * @card: qeth card structure, to check max. elems.
2130 * @skb: SKB address
2131 * @extra_elems: extra elems needed, to check against max.
2132 *
2133 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2134 * skb data, including linear part and fragments, but excluding TCP header.
2135 * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2136 * Checks if the result plus extra_elems fits under the limit for the card.
2137 * Returns 0 if it does not.
2138 * Note: extra_elems is not included in the returned result.
2139 */
2140 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2141 struct sk_buff *skb, int extra_elems)
2142 {
2143 addr_t start = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2144 addr_t end = (addr_t)skb->data + skb_headlen(skb);
2145 int elements = qeth_get_elements_for_frags(skb);
2146
2147 if (start != end)
2148 elements += qeth_get_elements_for_range(start, end);
2149
2150 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2151 QETH_DBF_MESSAGE(2,
2152 "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2153 elements + extra_elems, skb->len);
2154 return 0;
2155 }
2156 return elements;
2157 }
2158
2159 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2160 struct net_device *dev)
2161 {
2162 int rc;
2163 __be16 *tag;
2164 struct qeth_hdr *hdr = NULL;
2165 int hdr_elements = 0;
2166 int elements;
2167 struct qeth_card *card = dev->ml_priv;
2168 struct sk_buff *new_skb = NULL;
2169 int ipv = qeth_get_ip_version(skb);
2170 int cast_type = qeth_l3_get_cast_type(skb);
2171 struct qeth_qdio_out_q *queue =
2172 card->qdio.out_qs[card->qdio.do_prio_queueing
2173 || (cast_type && card->info.is_multicast_different) ?
2174 qeth_get_priority_queue(card, skb, ipv, cast_type) :
2175 card->qdio.default_out_queue];
2176 int tx_bytes = skb->len;
2177 unsigned int hd_len = 0;
2178 bool use_tso;
2179 int data_offset = -1;
2180 unsigned int nr_frags;
2181
2182 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2183 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2184 ((card->options.cq == QETH_CQ_ENABLED) &&
2185 (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) ||
2186 card->options.sniffer)
2187 goto tx_drop;
2188
2189 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2190 card->stats.tx_carrier_errors++;
2191 goto tx_drop;
2192 }
2193
2194 if ((cast_type == RTN_BROADCAST) &&
2195 (card->info.broadcast_capable == 0))
2196 goto tx_drop;
2197
2198 if (card->options.performance_stats) {
2199 card->perf_stats.outbound_cnt++;
2200 card->perf_stats.outbound_start_time = qeth_get_micros();
2201 }
2202
2203 /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2204 use_tso = skb_is_gso(skb) &&
2205 (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4);
2206
2207 if (card->info.type == QETH_CARD_TYPE_IQD) {
2208 new_skb = skb;
2209 data_offset = ETH_HLEN;
2210 hd_len = sizeof(*hdr);
2211 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2212 if (!hdr)
2213 goto tx_drop;
2214 hdr_elements++;
2215 } else {
2216 /* create a clone with writeable headroom */
2217 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2218 + VLAN_HLEN);
2219 if (!new_skb)
2220 goto tx_drop;
2221
2222 if (ipv == 4) {
2223 skb_pull(new_skb, ETH_HLEN);
2224 }
2225
2226 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2227 skb_push(new_skb, VLAN_HLEN);
2228 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2229 skb_copy_to_linear_data_offset(new_skb, 4,
2230 new_skb->data + 8, 4);
2231 skb_copy_to_linear_data_offset(new_skb, 8,
2232 new_skb->data + 12, 4);
2233 tag = (__be16 *)(new_skb->data + 12);
2234 *tag = cpu_to_be16(ETH_P_8021Q);
2235 *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2236 }
2237 }
2238
2239 netif_stop_queue(dev);
2240
2241 /* fix hardware limitation: as long as we do not have sbal
2242 * chaining we can not send long frag lists
2243 */
2244 if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2245 ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2246 (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2247 int lin_rc = skb_linearize(new_skb);
2248
2249 if (card->options.performance_stats) {
2250 if (lin_rc)
2251 card->perf_stats.tx_linfail++;
2252 else
2253 card->perf_stats.tx_lin++;
2254 }
2255 if (lin_rc)
2256 goto tx_drop;
2257 }
2258 nr_frags = skb_shinfo(new_skb)->nr_frags;
2259
2260 if (use_tso) {
2261 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2262 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2263 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type,
2264 new_skb->len - sizeof(struct qeth_hdr_tso));
2265 qeth_tso_fill_header(card, hdr, new_skb);
2266 hdr_elements++;
2267 } else {
2268 if (data_offset < 0) {
2269 hdr = skb_push(new_skb, sizeof(struct qeth_hdr));
2270 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type,
2271 new_skb->len -
2272 sizeof(struct qeth_hdr));
2273 } else {
2274 if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV)
2275 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2276 else {
2277 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2278 cast_type,
2279 new_skb->len - data_offset);
2280 }
2281 }
2282
2283 if (new_skb->ip_summed == CHECKSUM_PARTIAL) {
2284 qeth_tx_csum(new_skb, &hdr->hdr.l3.ext_flags, ipv);
2285 if (card->options.performance_stats)
2286 card->perf_stats.tx_csum++;
2287 }
2288 }
2289
2290 elements = use_tso ?
2291 qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2292 qeth_get_elements_no(card, new_skb, hdr_elements,
2293 (data_offset > 0) ? data_offset : 0);
2294 if (!elements) {
2295 if (data_offset >= 0)
2296 kmem_cache_free(qeth_core_header_cache, hdr);
2297 goto tx_drop;
2298 }
2299 elements += hdr_elements;
2300
2301 if (card->info.type != QETH_CARD_TYPE_IQD) {
2302 int len;
2303 if (use_tso) {
2304 hd_len = sizeof(struct qeth_hdr_tso) +
2305 ip_hdrlen(new_skb) + tcp_hdrlen(new_skb);
2306 len = hd_len;
2307 } else {
2308 len = sizeof(struct qeth_hdr_layer3);
2309 }
2310
2311 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2312 goto tx_drop;
2313 rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len,
2314 hd_len, elements);
2315 } else
2316 rc = qeth_do_send_packet_fast(queue, new_skb, hdr, data_offset,
2317 hd_len);
2318
2319 if (!rc) {
2320 card->stats.tx_packets++;
2321 card->stats.tx_bytes += tx_bytes;
2322 if (new_skb != skb)
2323 dev_kfree_skb_any(skb);
2324 if (card->options.performance_stats) {
2325 if (use_tso) {
2326 card->perf_stats.large_send_bytes += tx_bytes;
2327 card->perf_stats.large_send_cnt++;
2328 }
2329 if (nr_frags) {
2330 card->perf_stats.sg_skbs_sent++;
2331 /* nr_frags + skb->data */
2332 card->perf_stats.sg_frags_sent += nr_frags + 1;
2333 }
2334 }
2335 rc = NETDEV_TX_OK;
2336 } else {
2337 if (data_offset >= 0)
2338 kmem_cache_free(qeth_core_header_cache, hdr);
2339
2340 if (rc == -EBUSY) {
2341 if (new_skb != skb)
2342 dev_kfree_skb_any(new_skb);
2343 return NETDEV_TX_BUSY;
2344 } else
2345 goto tx_drop;
2346 }
2347
2348 netif_wake_queue(dev);
2349 if (card->options.performance_stats)
2350 card->perf_stats.outbound_time += qeth_get_micros() -
2351 card->perf_stats.outbound_start_time;
2352 return rc;
2353
2354 tx_drop:
2355 card->stats.tx_dropped++;
2356 card->stats.tx_errors++;
2357 if ((new_skb != skb) && new_skb)
2358 dev_kfree_skb_any(new_skb);
2359 dev_kfree_skb_any(skb);
2360 netif_wake_queue(dev);
2361 return NETDEV_TX_OK;
2362 }
2363
2364 static int __qeth_l3_open(struct net_device *dev)
2365 {
2366 struct qeth_card *card = dev->ml_priv;
2367 int rc = 0;
2368
2369 QETH_CARD_TEXT(card, 4, "qethopen");
2370 if (card->state == CARD_STATE_UP)
2371 return rc;
2372 if (card->state != CARD_STATE_SOFTSETUP)
2373 return -ENODEV;
2374 card->data.state = CH_STATE_UP;
2375 card->state = CARD_STATE_UP;
2376 netif_start_queue(dev);
2377
2378 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2379 napi_enable(&card->napi);
2380 napi_schedule(&card->napi);
2381 } else
2382 rc = -EIO;
2383 return rc;
2384 }
2385
2386 static int qeth_l3_open(struct net_device *dev)
2387 {
2388 struct qeth_card *card = dev->ml_priv;
2389
2390 QETH_CARD_TEXT(card, 5, "qethope_");
2391 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2392 QETH_CARD_TEXT(card, 3, "openREC");
2393 return -ERESTARTSYS;
2394 }
2395 return __qeth_l3_open(dev);
2396 }
2397
2398 static int qeth_l3_stop(struct net_device *dev)
2399 {
2400 struct qeth_card *card = dev->ml_priv;
2401
2402 QETH_CARD_TEXT(card, 4, "qethstop");
2403 netif_tx_disable(dev);
2404 if (card->state == CARD_STATE_UP) {
2405 card->state = CARD_STATE_SOFTSETUP;
2406 napi_disable(&card->napi);
2407 }
2408 return 0;
2409 }
2410
2411 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2412 .get_link = ethtool_op_get_link,
2413 .get_strings = qeth_core_get_strings,
2414 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2415 .get_sset_count = qeth_core_get_sset_count,
2416 .get_drvinfo = qeth_core_get_drvinfo,
2417 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2418 };
2419
2420 /*
2421 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2422 * NOARP on the netdevice is no option because it also turns off neighbor
2423 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2424 * arp resolution but we want the hard header (packet socket will work
2425 * e.g. tcpdump)
2426 */
2427 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2428 {
2429 n->nud_state = NUD_NOARP;
2430 memcpy(n->ha, "FAKELL", 6);
2431 n->output = n->ops->connected_output;
2432 return 0;
2433 }
2434
2435 static int
2436 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2437 {
2438 if (np->tbl->family == AF_INET)
2439 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2440
2441 return 0;
2442 }
2443
2444 static const struct net_device_ops qeth_l3_netdev_ops = {
2445 .ndo_open = qeth_l3_open,
2446 .ndo_stop = qeth_l3_stop,
2447 .ndo_get_stats = qeth_get_stats,
2448 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2449 .ndo_validate_addr = eth_validate_addr,
2450 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2451 .ndo_do_ioctl = qeth_do_ioctl,
2452 .ndo_change_mtu = qeth_change_mtu,
2453 .ndo_fix_features = qeth_fix_features,
2454 .ndo_set_features = qeth_set_features,
2455 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2456 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2457 .ndo_tx_timeout = qeth_tx_timeout,
2458 };
2459
2460 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2461 .ndo_open = qeth_l3_open,
2462 .ndo_stop = qeth_l3_stop,
2463 .ndo_get_stats = qeth_get_stats,
2464 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2465 .ndo_features_check = qeth_features_check,
2466 .ndo_validate_addr = eth_validate_addr,
2467 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2468 .ndo_do_ioctl = qeth_do_ioctl,
2469 .ndo_change_mtu = qeth_change_mtu,
2470 .ndo_fix_features = qeth_fix_features,
2471 .ndo_set_features = qeth_set_features,
2472 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2473 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2474 .ndo_tx_timeout = qeth_tx_timeout,
2475 .ndo_neigh_setup = qeth_l3_neigh_setup,
2476 };
2477
2478 static int qeth_l3_setup_netdev(struct qeth_card *card)
2479 {
2480 int rc;
2481
2482 if (card->info.type == QETH_CARD_TYPE_OSD ||
2483 card->info.type == QETH_CARD_TYPE_OSX) {
2484 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2485 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2486 pr_info("qeth_l3: ignoring TR device\n");
2487 return -ENODEV;
2488 }
2489
2490 card->dev = alloc_etherdev(0);
2491 if (!card->dev)
2492 return -ENODEV;
2493 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2494
2495 /*IPv6 address autoconfiguration stuff*/
2496 qeth_l3_get_unique_id(card);
2497 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2498 card->dev->dev_id = card->info.unique_id & 0xffff;
2499
2500 card->dev->hw_features |= NETIF_F_SG;
2501 card->dev->vlan_features |= NETIF_F_SG;
2502
2503 if (!card->info.guestlan) {
2504 card->dev->features |= NETIF_F_SG;
2505 card->dev->hw_features |= NETIF_F_TSO |
2506 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2507 card->dev->vlan_features |= NETIF_F_TSO |
2508 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2509 }
2510
2511 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2512 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2513 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2514 }
2515 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2516 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
2517 ether_setup);
2518 if (!card->dev)
2519 return -ENODEV;
2520 card->dev->flags |= IFF_NOARP;
2521 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2522 rc = qeth_l3_iqd_read_initial_mac(card);
2523 if (rc)
2524 return rc;
2525 if (card->options.hsuid[0])
2526 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2527 } else
2528 return -ENODEV;
2529
2530 card->dev->ml_priv = card;
2531 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2532 card->dev->mtu = card->info.initial_mtu;
2533 card->dev->min_mtu = 64;
2534 card->dev->max_mtu = ETH_MAX_MTU;
2535 card->dev->dev_port = card->info.portno;
2536 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2537 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2538 NETIF_F_HW_VLAN_CTAG_RX |
2539 NETIF_F_HW_VLAN_CTAG_FILTER;
2540 netif_keep_dst(card->dev);
2541 netif_set_gso_max_size(card->dev, (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
2542 PAGE_SIZE);
2543
2544 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2545 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2546 netif_carrier_off(card->dev);
2547 return register_netdev(card->dev);
2548 }
2549
2550 static const struct device_type qeth_l3_devtype = {
2551 .name = "qeth_layer3",
2552 .groups = qeth_l3_attr_groups,
2553 };
2554
2555 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2556 {
2557 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2558 int rc;
2559
2560 if (gdev->dev.type == &qeth_generic_devtype) {
2561 rc = qeth_l3_create_device_attributes(&gdev->dev);
2562 if (rc)
2563 return rc;
2564 }
2565 hash_init(card->ip_htable);
2566 hash_init(card->ip_mc_htable);
2567 card->options.layer2 = 0;
2568 card->info.hwtrap = 0;
2569 return 0;
2570 }
2571
2572 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2573 {
2574 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2575
2576 if (cgdev->dev.type == &qeth_generic_devtype)
2577 qeth_l3_remove_device_attributes(&cgdev->dev);
2578
2579 qeth_set_allowed_threads(card, 0, 1);
2580 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2581
2582 if (cgdev->state == CCWGROUP_ONLINE)
2583 qeth_l3_set_offline(cgdev);
2584
2585 if (card->dev) {
2586 unregister_netdev(card->dev);
2587 free_netdev(card->dev);
2588 card->dev = NULL;
2589 }
2590
2591 qeth_l3_clear_ip_htable(card, 0);
2592 qeth_l3_clear_ipato_list(card);
2593 return;
2594 }
2595
2596 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2597 {
2598 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2599 int rc = 0;
2600 enum qeth_card_states recover_flag;
2601
2602 mutex_lock(&card->discipline_mutex);
2603 mutex_lock(&card->conf_mutex);
2604 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2605 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2606
2607 recover_flag = card->state;
2608 rc = qeth_core_hardsetup_card(card);
2609 if (rc) {
2610 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2611 rc = -ENODEV;
2612 goto out_remove;
2613 }
2614
2615 if (!card->dev && qeth_l3_setup_netdev(card)) {
2616 rc = -ENODEV;
2617 goto out_remove;
2618 }
2619
2620 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2621 if (card->info.hwtrap &&
2622 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2623 card->info.hwtrap = 0;
2624 } else
2625 card->info.hwtrap = 0;
2626
2627 card->state = CARD_STATE_HARDSETUP;
2628 qeth_print_status_message(card);
2629
2630 /* softsetup */
2631 QETH_DBF_TEXT(SETUP, 2, "softsetp");
2632
2633 rc = qeth_l3_setadapter_parms(card);
2634 if (rc)
2635 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2636 if (!card->options.sniffer) {
2637 rc = qeth_l3_start_ipassists(card);
2638 if (rc) {
2639 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2640 goto out_remove;
2641 }
2642 rc = qeth_l3_setrouting_v4(card);
2643 if (rc)
2644 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2645 rc = qeth_l3_setrouting_v6(card);
2646 if (rc)
2647 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2648 }
2649 netif_tx_disable(card->dev);
2650
2651 rc = qeth_init_qdio_queues(card);
2652 if (rc) {
2653 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2654 rc = -ENODEV;
2655 goto out_remove;
2656 }
2657 card->state = CARD_STATE_SOFTSETUP;
2658
2659 qeth_set_allowed_threads(card, 0xffffffff, 0);
2660 qeth_l3_recover_ip(card);
2661 if (card->lan_online)
2662 netif_carrier_on(card->dev);
2663 else
2664 netif_carrier_off(card->dev);
2665
2666 qeth_enable_hw_features(card->dev);
2667 if (recover_flag == CARD_STATE_RECOVER) {
2668 rtnl_lock();
2669 if (recovery_mode)
2670 __qeth_l3_open(card->dev);
2671 else
2672 dev_open(card->dev);
2673 qeth_l3_set_rx_mode(card->dev);
2674 rtnl_unlock();
2675 }
2676 qeth_trace_features(card);
2677 /* let user_space know that device is online */
2678 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2679 mutex_unlock(&card->conf_mutex);
2680 mutex_unlock(&card->discipline_mutex);
2681 return 0;
2682 out_remove:
2683 qeth_l3_stop_card(card, 0);
2684 ccw_device_set_offline(CARD_DDEV(card));
2685 ccw_device_set_offline(CARD_WDEV(card));
2686 ccw_device_set_offline(CARD_RDEV(card));
2687 qdio_free(CARD_DDEV(card));
2688 if (recover_flag == CARD_STATE_RECOVER)
2689 card->state = CARD_STATE_RECOVER;
2690 else
2691 card->state = CARD_STATE_DOWN;
2692 mutex_unlock(&card->conf_mutex);
2693 mutex_unlock(&card->discipline_mutex);
2694 return rc;
2695 }
2696
2697 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2698 {
2699 return __qeth_l3_set_online(gdev, 0);
2700 }
2701
2702 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2703 int recovery_mode)
2704 {
2705 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2706 int rc = 0, rc2 = 0, rc3 = 0;
2707 enum qeth_card_states recover_flag;
2708
2709 mutex_lock(&card->discipline_mutex);
2710 mutex_lock(&card->conf_mutex);
2711 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2712 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2713
2714 if (card->dev && netif_carrier_ok(card->dev))
2715 netif_carrier_off(card->dev);
2716 recover_flag = card->state;
2717 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2718 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2719 card->info.hwtrap = 1;
2720 }
2721 qeth_l3_stop_card(card, recovery_mode);
2722 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
2723 rtnl_lock();
2724 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2725 rtnl_unlock();
2726 }
2727 rc = ccw_device_set_offline(CARD_DDEV(card));
2728 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2729 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2730 if (!rc)
2731 rc = (rc2) ? rc2 : rc3;
2732 if (rc)
2733 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2734 qdio_free(CARD_DDEV(card));
2735 if (recover_flag == CARD_STATE_UP)
2736 card->state = CARD_STATE_RECOVER;
2737 /* let user_space know that device is offline */
2738 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2739 mutex_unlock(&card->conf_mutex);
2740 mutex_unlock(&card->discipline_mutex);
2741 return 0;
2742 }
2743
2744 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2745 {
2746 return __qeth_l3_set_offline(cgdev, 0);
2747 }
2748
2749 static int qeth_l3_recover(void *ptr)
2750 {
2751 struct qeth_card *card;
2752 int rc = 0;
2753
2754 card = (struct qeth_card *) ptr;
2755 QETH_CARD_TEXT(card, 2, "recover1");
2756 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2757 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2758 return 0;
2759 QETH_CARD_TEXT(card, 2, "recover2");
2760 dev_warn(&card->gdev->dev,
2761 "A recovery process has been started for the device\n");
2762 qeth_set_recovery_task(card);
2763 __qeth_l3_set_offline(card->gdev, 1);
2764 rc = __qeth_l3_set_online(card->gdev, 1);
2765 if (!rc)
2766 dev_info(&card->gdev->dev,
2767 "Device successfully recovered!\n");
2768 else {
2769 qeth_close_dev(card);
2770 dev_warn(&card->gdev->dev, "The qeth device driver "
2771 "failed to recover an error on the device\n");
2772 }
2773 qeth_clear_recovery_task(card);
2774 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2775 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2776 return 0;
2777 }
2778
2779 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2780 {
2781 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2782
2783 if (card->dev)
2784 netif_device_detach(card->dev);
2785 qeth_set_allowed_threads(card, 0, 1);
2786 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2787 if (gdev->state == CCWGROUP_OFFLINE)
2788 return 0;
2789 if (card->state == CARD_STATE_UP) {
2790 if (card->info.hwtrap)
2791 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2792 __qeth_l3_set_offline(card->gdev, 1);
2793 } else
2794 __qeth_l3_set_offline(card->gdev, 0);
2795 return 0;
2796 }
2797
2798 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2799 {
2800 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2801 int rc = 0;
2802
2803 if (gdev->state == CCWGROUP_OFFLINE)
2804 goto out;
2805
2806 if (card->state == CARD_STATE_RECOVER) {
2807 rc = __qeth_l3_set_online(card->gdev, 1);
2808 if (rc) {
2809 rtnl_lock();
2810 dev_close(card->dev);
2811 rtnl_unlock();
2812 }
2813 } else
2814 rc = __qeth_l3_set_online(card->gdev, 0);
2815 out:
2816 qeth_set_allowed_threads(card, 0xffffffff, 0);
2817 if (card->dev)
2818 netif_device_attach(card->dev);
2819 if (rc)
2820 dev_warn(&card->gdev->dev, "The qeth device driver "
2821 "failed to recover an error on the device\n");
2822 return rc;
2823 }
2824
2825 /* Returns zero if the command is successfully "consumed" */
2826 static int qeth_l3_control_event(struct qeth_card *card,
2827 struct qeth_ipa_cmd *cmd)
2828 {
2829 return 1;
2830 }
2831
2832 struct qeth_discipline qeth_l3_discipline = {
2833 .devtype = &qeth_l3_devtype,
2834 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2835 .recover = qeth_l3_recover,
2836 .setup = qeth_l3_probe_device,
2837 .remove = qeth_l3_remove_device,
2838 .set_online = qeth_l3_set_online,
2839 .set_offline = qeth_l3_set_offline,
2840 .freeze = qeth_l3_pm_suspend,
2841 .thaw = qeth_l3_pm_resume,
2842 .restore = qeth_l3_pm_resume,
2843 .do_ioctl = qeth_l3_do_ioctl,
2844 .control_event_handler = qeth_l3_control_event,
2845 };
2846 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2847
2848 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2849 struct qeth_ipaddr *addr,
2850 unsigned long event)
2851 {
2852 switch (event) {
2853 case NETDEV_UP:
2854 spin_lock_bh(&card->ip_lock);
2855 qeth_l3_add_ip(card, addr);
2856 spin_unlock_bh(&card->ip_lock);
2857 return NOTIFY_OK;
2858 case NETDEV_DOWN:
2859 spin_lock_bh(&card->ip_lock);
2860 qeth_l3_delete_ip(card, addr);
2861 spin_unlock_bh(&card->ip_lock);
2862 return NOTIFY_OK;
2863 default:
2864 return NOTIFY_DONE;
2865 }
2866 }
2867
2868 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2869 {
2870 if (is_vlan_dev(dev))
2871 dev = vlan_dev_real_dev(dev);
2872 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2873 dev->netdev_ops == &qeth_l3_netdev_ops)
2874 return (struct qeth_card *) dev->ml_priv;
2875 return NULL;
2876 }
2877
2878 static int qeth_l3_ip_event(struct notifier_block *this,
2879 unsigned long event, void *ptr)
2880 {
2881
2882 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2883 struct net_device *dev = ifa->ifa_dev->dev;
2884 struct qeth_ipaddr addr;
2885 struct qeth_card *card;
2886
2887 if (dev_net(dev) != &init_net)
2888 return NOTIFY_DONE;
2889
2890 card = qeth_l3_get_card_from_dev(dev);
2891 if (!card)
2892 return NOTIFY_DONE;
2893 QETH_CARD_TEXT(card, 3, "ipevent");
2894
2895 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2896 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2897 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2898
2899 return qeth_l3_handle_ip_event(card, &addr, event);
2900 }
2901
2902 static struct notifier_block qeth_l3_ip_notifier = {
2903 qeth_l3_ip_event,
2904 NULL,
2905 };
2906
2907 static int qeth_l3_ip6_event(struct notifier_block *this,
2908 unsigned long event, void *ptr)
2909 {
2910 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2911 struct net_device *dev = ifa->idev->dev;
2912 struct qeth_ipaddr addr;
2913 struct qeth_card *card;
2914
2915 card = qeth_l3_get_card_from_dev(dev);
2916 if (!card)
2917 return NOTIFY_DONE;
2918 QETH_CARD_TEXT(card, 3, "ip6event");
2919 if (!qeth_is_supported(card, IPA_IPV6))
2920 return NOTIFY_DONE;
2921
2922 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
2923 addr.u.a6.addr = ifa->addr;
2924 addr.u.a6.pfxlen = ifa->prefix_len;
2925
2926 return qeth_l3_handle_ip_event(card, &addr, event);
2927 }
2928
2929 static struct notifier_block qeth_l3_ip6_notifier = {
2930 qeth_l3_ip6_event,
2931 NULL,
2932 };
2933
2934 static int qeth_l3_register_notifiers(void)
2935 {
2936 int rc;
2937
2938 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2939 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2940 if (rc)
2941 return rc;
2942 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2943 if (rc) {
2944 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2945 return rc;
2946 }
2947 return 0;
2948 }
2949
2950 static void qeth_l3_unregister_notifiers(void)
2951 {
2952 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2953 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2954 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2955 }
2956
2957 static int __init qeth_l3_init(void)
2958 {
2959 pr_info("register layer 3 discipline\n");
2960 return qeth_l3_register_notifiers();
2961 }
2962
2963 static void __exit qeth_l3_exit(void)
2964 {
2965 qeth_l3_unregister_notifiers();
2966 pr_info("unregister layer 3 discipline\n");
2967 }
2968
2969 module_init(qeth_l3_init);
2970 module_exit(qeth_l3_exit);
2971 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2972 MODULE_DESCRIPTION("qeth layer 3 discipline");
2973 MODULE_LICENSE("GPL");
Linux with added FPC-III support