?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
media: stv06xx: add missing descriptor sanity checks
[linux/fpc-iii.git] / drivers / s390 / net / qeth_l3_main.c
blob5508ab89b518dd306a7a63c399d69ff7dba64b9f
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/iucv/af_iucv.h>
36 #include <linux/hashtable.h>
37
38 #include "qeth_l3.h"
39
40
41 static int qeth_l3_set_offline(struct ccwgroup_device *);
42 static int qeth_l3_register_addr_entry(struct qeth_card *,
43 struct qeth_ipaddr *);
44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46
47 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
48 {
49 sprintf(buf, "%pI4", addr);
50 }
51
52 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
53 {
54 sprintf(buf, "%pI6", addr);
55 }
56
57 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
58 char *buf)
59 {
60 if (proto == QETH_PROT_IPV4)
61 qeth_l3_ipaddr4_to_string(addr, buf);
62 else if (proto == QETH_PROT_IPV6)
63 qeth_l3_ipaddr6_to_string(addr, buf);
64 }
65
66 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
67 struct qeth_ipaddr *query)
68 {
69 u32 key = qeth_l3_ipaddr_hash(query);
70 struct qeth_ipaddr *addr;
71
72 if (query->is_multicast) {
73 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
74 if (qeth_l3_addr_match_ip(addr, query))
75 return addr;
76 } else {
77 hash_for_each_possible(card->ip_htable, addr, hnode, key)
78 if (qeth_l3_addr_match_ip(addr, query))
79 return addr;
80 }
81 return NULL;
82 }
83
84 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
85 {
86 int i, j;
87 u8 octet;
88
89 for (i = 0; i < len; ++i) {
90 octet = addr[i];
91 for (j = 7; j >= 0; --j) {
92 bits[i*8 + j] = octet & 1;
93 octet >>= 1;
94 }
95 }
96 }
97
98 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
99 struct qeth_ipaddr *addr)
100 {
101 struct qeth_ipato_entry *ipatoe;
102 u8 addr_bits[128] = {0, };
103 u8 ipatoe_bits[128] = {0, };
104 int rc = 0;
105
106 if (!card->ipato.enabled)
107 return false;
108 if (addr->type != QETH_IP_TYPE_NORMAL)
109 return false;
110
111 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
112 (addr->proto == QETH_PROT_IPV4)? 4:16);
113 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
114 if (addr->proto != ipatoe->proto)
115 continue;
116 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
117 (ipatoe->proto == QETH_PROT_IPV4) ?
118 4 : 16);
119 if (addr->proto == QETH_PROT_IPV4)
120 rc = !memcmp(addr_bits, ipatoe_bits,
121 min(32, ipatoe->mask_bits));
122 else
123 rc = !memcmp(addr_bits, ipatoe_bits,
124 min(128, ipatoe->mask_bits));
125 if (rc)
126 break;
127 }
128 /* invert? */
129 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
130 rc = !rc;
131 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
132 rc = !rc;
133
134 return rc;
135 }
136
137 static int qeth_l3_delete_ip(struct qeth_card *card,
138 struct qeth_ipaddr *tmp_addr)
139 {
140 int rc = 0;
141 struct qeth_ipaddr *addr;
142
143 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
144 QETH_CARD_TEXT(card, 2, "delrxip");
145 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
146 QETH_CARD_TEXT(card, 2, "delvipa");
147 else
148 QETH_CARD_TEXT(card, 2, "delip");
149
150 if (tmp_addr->proto == QETH_PROT_IPV4)
151 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
152 else {
153 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
154 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
155 }
156
157 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
158 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
159 return -ENOENT;
160
161 addr->ref_counter--;
162 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
163 return rc;
164 if (addr->in_progress)
165 return -EINPROGRESS;
166
167 if (qeth_card_hw_is_reachable(card))
168 rc = qeth_l3_deregister_addr_entry(card, addr);
169
170 hash_del(&addr->hnode);
171 kfree(addr);
172
173 return rc;
174 }
175
176 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
177 {
178 int rc = 0;
179 struct qeth_ipaddr *addr;
180 char buf[40];
181
182 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
183 QETH_CARD_TEXT(card, 2, "addrxip");
184 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
185 QETH_CARD_TEXT(card, 2, "addvipa");
186 else
187 QETH_CARD_TEXT(card, 2, "addip");
188
189 if (tmp_addr->proto == QETH_PROT_IPV4)
190 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
191 else {
192 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
193 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
194 }
195
196 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
197 if (addr) {
198 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
199 return -EADDRINUSE;
200 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
201 addr->ref_counter++;
202 return 0;
203 }
204 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
205 buf);
206 dev_warn(&card->gdev->dev,
207 "Registering IP address %s failed\n", buf);
208 return -EADDRINUSE;
209 } else {
210 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
211 if (!addr)
212 return -ENOMEM;
213
214 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
215 QETH_CARD_TEXT(card, 2, "tkovaddr");
216 addr->ipato = 1;
217 }
218 hash_add(card->ip_htable, &addr->hnode,
219 qeth_l3_ipaddr_hash(addr));
220
221 if (!qeth_card_hw_is_reachable(card)) {
222 addr->disp_flag = QETH_DISP_ADDR_ADD;
223 return 0;
224 }
225
226 /* qeth_l3_register_addr_entry can go to sleep
227 * if we add a IPV4 addr. It is caused by the reason
228 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
229 * Thus we should unlock spinlock, and make a protection
230 * using in_progress variable to indicate that there is
231 * an hardware operation with this IPV4 address
232 */
233 if (addr->proto == QETH_PROT_IPV4) {
234 addr->in_progress = 1;
235 mutex_unlock(&card->ip_lock);
236 rc = qeth_l3_register_addr_entry(card, addr);
237 mutex_lock(&card->ip_lock);
238 addr->in_progress = 0;
239 } else
240 rc = qeth_l3_register_addr_entry(card, addr);
241
242 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
243 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
244 if (addr->ref_counter < 1) {
245 qeth_l3_deregister_addr_entry(card, addr);
246 hash_del(&addr->hnode);
247 kfree(addr);
248 }
249 } else {
250 hash_del(&addr->hnode);
251 kfree(addr);
252 }
253 }
254 return rc;
255 }
256
257 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
258 bool add)
259 {
260 int rc;
261
262 mutex_lock(&card->ip_lock);
263 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
264 mutex_unlock(&card->ip_lock);
265
266 return rc;
267 }
268
269 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
270 {
271 struct qeth_ipaddr *addr;
272 struct hlist_node *tmp;
273 int i;
274
275 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
276 hash_del(&addr->hnode);
277 kfree(addr);
278 }
279 }
280
281 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
282 {
283 struct qeth_ipaddr *addr;
284 struct hlist_node *tmp;
285 int i;
286
287 QETH_CARD_TEXT(card, 4, "clearip");
288
289 mutex_lock(&card->ip_lock);
290
291 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
292 if (!recover) {
293 hash_del(&addr->hnode);
294 kfree(addr);
295 continue;
296 }
297 addr->disp_flag = QETH_DISP_ADDR_ADD;
298 }
299
300 mutex_unlock(&card->ip_lock);
301 }
302
303 static void qeth_l3_recover_ip(struct qeth_card *card)
304 {
305 struct qeth_ipaddr *addr;
306 struct hlist_node *tmp;
307 int i;
308 int rc;
309
310 QETH_CARD_TEXT(card, 4, "recovrip");
311
312 mutex_lock(&card->ip_lock);
313
314 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
315 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
316 if (addr->proto == QETH_PROT_IPV4) {
317 addr->in_progress = 1;
318 mutex_unlock(&card->ip_lock);
319 rc = qeth_l3_register_addr_entry(card, addr);
320 mutex_lock(&card->ip_lock);
321 addr->in_progress = 0;
322 } else
323 rc = qeth_l3_register_addr_entry(card, addr);
324
325 if (!rc) {
326 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
327 if (addr->ref_counter < 1)
328 qeth_l3_delete_ip(card, addr);
329 } else {
330 hash_del(&addr->hnode);
331 kfree(addr);
332 }
333 }
334 }
335
336 mutex_unlock(&card->ip_lock);
337 }
338
339 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
340 unsigned long data)
341 {
342 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
343
344 switch (cmd->hdr.return_code) {
345 case IPA_RC_SUCCESS:
346 return 0;
347 case IPA_RC_DUPLICATE_IP_ADDRESS:
348 return -EADDRINUSE;
349 case IPA_RC_MC_ADDR_NOT_FOUND:
350 return -ENOENT;
351 case IPA_RC_LAN_OFFLINE:
352 return -ENETDOWN;
353 default:
354 return -EIO;
355 }
356 }
357
358 static int qeth_l3_send_setdelmc(struct qeth_card *card,
359 struct qeth_ipaddr *addr, int ipacmd)
360 {
361 struct qeth_cmd_buffer *iob;
362 struct qeth_ipa_cmd *cmd;
363
364 QETH_CARD_TEXT(card, 4, "setdelmc");
365
366 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
367 IPA_DATA_SIZEOF(setdelipm));
368 if (!iob)
369 return -ENOMEM;
370 cmd = __ipa_cmd(iob);
371 if (addr->proto == QETH_PROT_IPV6) {
372 cmd->data.setdelipm.ip = addr->u.a6.addr;
373 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
374 } else {
375 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
376 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
377 }
378
379 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
380 }
381
382 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
383 {
384 int i, j;
385 for (i = 0; i < 16; i++) {
386 j = (len) - (i * 8);
387 if (j >= 8)
388 netmask[i] = 0xff;
389 else if (j > 0)
390 netmask[i] = (u8)(0xFF00 >> j);
391 else
392 netmask[i] = 0;
393 }
394 }
395
396 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
397 {
398 switch (addr->type) {
399 case QETH_IP_TYPE_RXIP:
400 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
401 case QETH_IP_TYPE_VIPA:
402 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
403 QETH_IPA_DELIP_VIPA_FLAG;
404 default:
405 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
406 }
407 }
408
409 static int qeth_l3_send_setdelip(struct qeth_card *card,
410 struct qeth_ipaddr *addr,
411 enum qeth_ipa_cmds ipacmd)
412 {
413 struct qeth_cmd_buffer *iob;
414 struct qeth_ipa_cmd *cmd;
415 __u8 netmask[16];
416 u32 flags;
417
418 QETH_CARD_TEXT(card, 4, "setdelip");
419
420 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
421 IPA_DATA_SIZEOF(setdelip6));
422 if (!iob)
423 return -ENOMEM;
424 cmd = __ipa_cmd(iob);
425
426 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
427 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
428
429 if (addr->proto == QETH_PROT_IPV6) {
430 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
431 sizeof(struct in6_addr));
432 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
433 memcpy(cmd->data.setdelip6.mask, netmask,
434 sizeof(struct in6_addr));
435 cmd->data.setdelip6.flags = flags;
436 } else {
437 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
438 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
439 cmd->data.setdelip4.flags = flags;
440 }
441
442 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
443 }
444
445 static int qeth_l3_send_setrouting(struct qeth_card *card,
446 enum qeth_routing_types type, enum qeth_prot_versions prot)
447 {
448 int rc;
449 struct qeth_ipa_cmd *cmd;
450 struct qeth_cmd_buffer *iob;
451
452 QETH_CARD_TEXT(card, 4, "setroutg");
453 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
454 IPA_DATA_SIZEOF(setrtg));
455 if (!iob)
456 return -ENOMEM;
457 cmd = __ipa_cmd(iob);
458 cmd->data.setrtg.type = (type);
459 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
460
461 return rc;
462 }
463
464 static int qeth_l3_correct_routing_type(struct qeth_card *card,
465 enum qeth_routing_types *type, enum qeth_prot_versions prot)
466 {
467 if (IS_IQD(card)) {
468 switch (*type) {
469 case NO_ROUTER:
470 case PRIMARY_CONNECTOR:
471 case SECONDARY_CONNECTOR:
472 case MULTICAST_ROUTER:
473 return 0;
474 default:
475 goto out_inval;
476 }
477 } else {
478 switch (*type) {
479 case NO_ROUTER:
480 case PRIMARY_ROUTER:
481 case SECONDARY_ROUTER:
482 return 0;
483 case MULTICAST_ROUTER:
484 if (qeth_is_ipafunc_supported(card, prot,
485 IPA_OSA_MC_ROUTER))
486 return 0;
487 default:
488 goto out_inval;
489 }
490 }
491 out_inval:
492 *type = NO_ROUTER;
493 return -EINVAL;
494 }
495
496 int qeth_l3_setrouting_v4(struct qeth_card *card)
497 {
498 int rc;
499
500 QETH_CARD_TEXT(card, 3, "setrtg4");
501
502 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
503 QETH_PROT_IPV4);
504 if (rc)
505 return rc;
506
507 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
508 QETH_PROT_IPV4);
509 if (rc) {
510 card->options.route4.type = NO_ROUTER;
511 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
512 rc, CARD_DEVID(card));
513 }
514 return rc;
515 }
516
517 int qeth_l3_setrouting_v6(struct qeth_card *card)
518 {
519 int rc = 0;
520
521 QETH_CARD_TEXT(card, 3, "setrtg6");
522
523 if (!qeth_is_supported(card, IPA_IPV6))
524 return 0;
525 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
526 QETH_PROT_IPV6);
527 if (rc)
528 return rc;
529
530 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
531 QETH_PROT_IPV6);
532 if (rc) {
533 card->options.route6.type = NO_ROUTER;
534 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
535 rc, CARD_DEVID(card));
536 }
537 return rc;
538 }
539
540 /*
541 * IP address takeover related functions
542 */
543
544 /**
545 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
546 *
547 * Caller must hold ip_lock.
548 */
549 void qeth_l3_update_ipato(struct qeth_card *card)
550 {
551 struct qeth_ipaddr *addr;
552 unsigned int i;
553
554 hash_for_each(card->ip_htable, i, addr, hnode) {
555 if (addr->type != QETH_IP_TYPE_NORMAL)
556 continue;
557 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
558 }
559 }
560
561 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
562 {
563 struct qeth_ipato_entry *ipatoe, *tmp;
564
565 mutex_lock(&card->ip_lock);
566
567 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
568 list_del(&ipatoe->entry);
569 kfree(ipatoe);
570 }
571
572 qeth_l3_update_ipato(card);
573 mutex_unlock(&card->ip_lock);
574 }
575
576 int qeth_l3_add_ipato_entry(struct qeth_card *card,
577 struct qeth_ipato_entry *new)
578 {
579 struct qeth_ipato_entry *ipatoe;
580 int rc = 0;
581
582 QETH_CARD_TEXT(card, 2, "addipato");
583
584 mutex_lock(&card->ip_lock);
585
586 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
587 if (ipatoe->proto != new->proto)
588 continue;
589 if (!memcmp(ipatoe->addr, new->addr,
590 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
591 (ipatoe->mask_bits == new->mask_bits)) {
592 rc = -EEXIST;
593 break;
594 }
595 }
596
597 if (!rc) {
598 list_add_tail(&new->entry, &card->ipato.entries);
599 qeth_l3_update_ipato(card);
600 }
601
602 mutex_unlock(&card->ip_lock);
603
604 return rc;
605 }
606
607 int qeth_l3_del_ipato_entry(struct qeth_card *card,
608 enum qeth_prot_versions proto, u8 *addr,
609 int mask_bits)
610 {
611 struct qeth_ipato_entry *ipatoe, *tmp;
612 int rc = -ENOENT;
613
614 QETH_CARD_TEXT(card, 2, "delipato");
615
616 mutex_lock(&card->ip_lock);
617
618 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
619 if (ipatoe->proto != proto)
620 continue;
621 if (!memcmp(ipatoe->addr, addr,
622 (proto == QETH_PROT_IPV4)? 4:16) &&
623 (ipatoe->mask_bits == mask_bits)) {
624 list_del(&ipatoe->entry);
625 qeth_l3_update_ipato(card);
626 kfree(ipatoe);
627 rc = 0;
628 }
629 }
630
631 mutex_unlock(&card->ip_lock);
632 return rc;
633 }
634
635 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
636 enum qeth_ip_types type,
637 enum qeth_prot_versions proto)
638 {
639 struct qeth_ipaddr addr;
640
641 qeth_l3_init_ipaddr(&addr, type, proto);
642 if (proto == QETH_PROT_IPV4)
643 memcpy(&addr.u.a4.addr, ip, 4);
644 else
645 memcpy(&addr.u.a6.addr, ip, 16);
646
647 return qeth_l3_modify_ip(card, &addr, add);
648 }
649
650 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
651 {
652 struct qeth_ipaddr addr;
653 unsigned int i;
654
655 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
656 addr.u.a6.addr.s6_addr[0] = 0xfe;
657 addr.u.a6.addr.s6_addr[1] = 0x80;
658 for (i = 0; i < 8; i++)
659 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
660
661 return qeth_l3_modify_ip(card, &addr, add);
662 }
663
664 static int qeth_l3_register_addr_entry(struct qeth_card *card,
665 struct qeth_ipaddr *addr)
666 {
667 char buf[50];
668 int rc = 0;
669 int cnt = 3;
670
671 if (card->options.sniffer)
672 return 0;
673
674 if (addr->proto == QETH_PROT_IPV4) {
675 QETH_CARD_TEXT(card, 2, "setaddr4");
676 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
677 } else if (addr->proto == QETH_PROT_IPV6) {
678 QETH_CARD_TEXT(card, 2, "setaddr6");
679 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
680 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
681 } else {
682 QETH_CARD_TEXT(card, 2, "setaddr?");
683 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
684 }
685 do {
686 if (addr->is_multicast)
687 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
688 else
689 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
690 if (rc)
691 QETH_CARD_TEXT(card, 2, "failed");
692 } while ((--cnt > 0) && rc);
693 if (rc) {
694 QETH_CARD_TEXT(card, 2, "FAILED");
695 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
696 dev_warn(&card->gdev->dev,
697 "Registering IP address %s failed\n", buf);
698 }
699 return rc;
700 }
701
702 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
703 struct qeth_ipaddr *addr)
704 {
705 int rc = 0;
706
707 if (card->options.sniffer)
708 return 0;
709
710 if (addr->proto == QETH_PROT_IPV4) {
711 QETH_CARD_TEXT(card, 2, "deladdr4");
712 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
713 } else if (addr->proto == QETH_PROT_IPV6) {
714 QETH_CARD_TEXT(card, 2, "deladdr6");
715 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
716 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
717 } else {
718 QETH_CARD_TEXT(card, 2, "deladdr?");
719 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
720 }
721 if (addr->is_multicast)
722 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
723 else
724 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
725 if (rc)
726 QETH_CARD_TEXT(card, 2, "failed");
727
728 return rc;
729 }
730
731 static int qeth_l3_setadapter_parms(struct qeth_card *card)
732 {
733 int rc = 0;
734
735 QETH_CARD_TEXT(card, 2, "setadprm");
736
737 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
738 rc = qeth_setadpparms_change_macaddr(card);
739 if (rc)
740 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
741 " address failed\n");
742 }
743
744 return rc;
745 }
746
747 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
748 {
749 int rc;
750
751 QETH_CARD_TEXT(card, 3, "ipaarp");
752
753 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
754 dev_info(&card->gdev->dev,
755 "ARP processing not supported on %s!\n",
756 QETH_CARD_IFNAME(card));
757 return 0;
758 }
759 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
760 IPA_CMD_ASS_START, NULL);
761 if (rc) {
762 dev_warn(&card->gdev->dev,
763 "Starting ARP processing support for %s failed\n",
764 QETH_CARD_IFNAME(card));
765 }
766 return rc;
767 }
768
769 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
770 {
771 int rc;
772
773 QETH_CARD_TEXT(card, 3, "stsrcmac");
774
775 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
776 dev_info(&card->gdev->dev,
777 "Inbound source MAC-address not supported on %s\n",
778 QETH_CARD_IFNAME(card));
779 return -EOPNOTSUPP;
780 }
781
782 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
783 IPA_CMD_ASS_START, NULL);
784 if (rc)
785 dev_warn(&card->gdev->dev,
786 "Starting source MAC-address support for %s failed\n",
787 QETH_CARD_IFNAME(card));
788 return rc;
789 }
790
791 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
792 {
793 int rc = 0;
794
795 QETH_CARD_TEXT(card, 3, "strtvlan");
796
797 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
798 dev_info(&card->gdev->dev,
799 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
800 return -EOPNOTSUPP;
801 }
802
803 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
804 IPA_CMD_ASS_START, NULL);
805 if (rc) {
806 dev_warn(&card->gdev->dev,
807 "Starting VLAN support for %s failed\n",
808 QETH_CARD_IFNAME(card));
809 } else {
810 dev_info(&card->gdev->dev, "VLAN enabled\n");
811 }
812 return rc;
813 }
814
815 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
816 {
817 int rc;
818
819 QETH_CARD_TEXT(card, 3, "stmcast");
820
821 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
822 dev_info(&card->gdev->dev,
823 "Multicast not supported on %s\n",
824 QETH_CARD_IFNAME(card));
825 return -EOPNOTSUPP;
826 }
827
828 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
829 IPA_CMD_ASS_START, NULL);
830 if (rc) {
831 dev_warn(&card->gdev->dev,
832 "Starting multicast support for %s failed\n",
833 QETH_CARD_IFNAME(card));
834 } else {
835 dev_info(&card->gdev->dev, "Multicast enabled\n");
836 card->dev->flags |= IFF_MULTICAST;
837 }
838 return rc;
839 }
840
841 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
842 {
843 u32 ipv6_data = 3;
844 int rc;
845
846 QETH_CARD_TEXT(card, 3, "softipv6");
847
848 if (IS_IQD(card))
849 goto out;
850
851 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
852 &ipv6_data);
853 if (rc) {
854 dev_err(&card->gdev->dev,
855 "Activating IPv6 support for %s failed\n",
856 QETH_CARD_IFNAME(card));
857 return rc;
858 }
859 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
860 NULL);
861 if (rc) {
862 dev_err(&card->gdev->dev,
863 "Activating IPv6 support for %s failed\n",
864 QETH_CARD_IFNAME(card));
865 return rc;
866 }
867 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
868 IPA_CMD_ASS_START, NULL);
869 if (rc) {
870 dev_warn(&card->gdev->dev,
871 "Enabling the passthrough mode for %s failed\n",
872 QETH_CARD_IFNAME(card));
873 return rc;
874 }
875 out:
876 dev_info(&card->gdev->dev, "IPV6 enabled\n");
877 return 0;
878 }
879
880 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
881 {
882 QETH_CARD_TEXT(card, 3, "strtipv6");
883
884 if (!qeth_is_supported(card, IPA_IPV6)) {
885 dev_info(&card->gdev->dev,
886 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
887 return 0;
888 }
889 return qeth_l3_softsetup_ipv6(card);
890 }
891
892 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
893 {
894 u32 filter_data = 1;
895 int rc;
896
897 QETH_CARD_TEXT(card, 3, "stbrdcst");
898 card->info.broadcast_capable = 0;
899 if (!qeth_is_supported(card, IPA_FILTERING)) {
900 dev_info(&card->gdev->dev,
901 "Broadcast not supported on %s\n",
902 QETH_CARD_IFNAME(card));
903 rc = -EOPNOTSUPP;
904 goto out;
905 }
906 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
907 IPA_CMD_ASS_START, NULL);
908 if (rc) {
909 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
910 "%s failed\n", QETH_CARD_IFNAME(card));
911 goto out;
912 }
913
914 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
915 IPA_CMD_ASS_CONFIGURE, &filter_data);
916 if (rc) {
917 dev_warn(&card->gdev->dev,
918 "Setting up broadcast filtering for %s failed\n",
919 QETH_CARD_IFNAME(card));
920 goto out;
921 }
922 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
923 dev_info(&card->gdev->dev, "Broadcast enabled\n");
924 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
925 IPA_CMD_ASS_ENABLE, &filter_data);
926 if (rc) {
927 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
928 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
929 goto out;
930 }
931 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
932 out:
933 if (card->info.broadcast_capable)
934 card->dev->flags |= IFF_BROADCAST;
935 else
936 card->dev->flags &= ~IFF_BROADCAST;
937 return rc;
938 }
939
940 static int qeth_l3_start_ipassists(struct qeth_card *card)
941 {
942 QETH_CARD_TEXT(card, 3, "strtipas");
943
944 qeth_l3_start_ipa_arp_processing(card); /* go on*/
945 qeth_l3_start_ipa_source_mac(card); /* go on*/
946 qeth_l3_start_ipa_vlan(card); /* go on*/
947 qeth_l3_start_ipa_multicast(card); /* go on*/
948 qeth_l3_start_ipa_ipv6(card); /* go on*/
949 qeth_l3_start_ipa_broadcast(card); /* go on*/
950 return 0;
951 }
952
953 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
954 struct qeth_reply *reply, unsigned long data)
955 {
956 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
957
958 if (cmd->hdr.return_code)
959 return -EIO;
960
961 ether_addr_copy(card->dev->dev_addr,
962 cmd->data.create_destroy_addr.unique_id);
963 return 0;
964 }
965
966 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
967 {
968 int rc = 0;
969 struct qeth_cmd_buffer *iob;
970 struct qeth_ipa_cmd *cmd;
971
972 QETH_CARD_TEXT(card, 2, "hsrmac");
973
974 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
975 IPA_DATA_SIZEOF(create_destroy_addr));
976 if (!iob)
977 return -ENOMEM;
978 cmd = __ipa_cmd(iob);
979 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
980 card->info.unique_id;
981
982 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
983 NULL);
984 return rc;
985 }
986
987 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
988 struct qeth_reply *reply, unsigned long data)
989 {
990 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
991
992 if (cmd->hdr.return_code == 0) {
993 card->info.unique_id = *((__u16 *)
994 &cmd->data.create_destroy_addr.unique_id[6]);
995 return 0;
996 }
997
998 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
999 UNIQUE_ID_NOT_BY_CARD;
1000 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
1001 return -EIO;
1002 }
1003
1004 static int qeth_l3_get_unique_id(struct qeth_card *card)
1005 {
1006 int rc = 0;
1007 struct qeth_cmd_buffer *iob;
1008 struct qeth_ipa_cmd *cmd;
1009
1010 QETH_CARD_TEXT(card, 2, "guniqeid");
1011
1012 if (!qeth_is_supported(card, IPA_IPV6)) {
1013 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1014 UNIQUE_ID_NOT_BY_CARD;
1015 return 0;
1016 }
1017
1018 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
1019 IPA_DATA_SIZEOF(create_destroy_addr));
1020 if (!iob)
1021 return -ENOMEM;
1022 cmd = __ipa_cmd(iob);
1023 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1024 card->info.unique_id;
1025
1026 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1027 return rc;
1028 }
1029
1030 static int
1031 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1032 unsigned long data)
1033 {
1034 struct qeth_ipa_cmd *cmd;
1035 __u16 rc;
1036
1037 QETH_CARD_TEXT(card, 2, "diastrcb");
1038
1039 cmd = (struct qeth_ipa_cmd *)data;
1040 rc = cmd->hdr.return_code;
1041 if (rc)
1042 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1043 switch (cmd->data.diagass.action) {
1044 case QETH_DIAGS_CMD_TRACE_QUERY:
1045 break;
1046 case QETH_DIAGS_CMD_TRACE_DISABLE:
1047 switch (rc) {
1048 case 0:
1049 case IPA_RC_INVALID_SUBCMD:
1050 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1051 dev_info(&card->gdev->dev, "The HiperSockets network "
1052 "traffic analyzer is deactivated\n");
1053 break;
1054 default:
1055 break;
1056 }
1057 break;
1058 case QETH_DIAGS_CMD_TRACE_ENABLE:
1059 switch (rc) {
1060 case 0:
1061 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1062 dev_info(&card->gdev->dev, "The HiperSockets network "
1063 "traffic analyzer is activated\n");
1064 break;
1065 case IPA_RC_HARDWARE_AUTH_ERROR:
1066 dev_warn(&card->gdev->dev, "The device is not "
1067 "authorized to run as a HiperSockets network "
1068 "traffic analyzer\n");
1069 break;
1070 case IPA_RC_TRACE_ALREADY_ACTIVE:
1071 dev_warn(&card->gdev->dev, "A HiperSockets "
1072 "network traffic analyzer is already "
1073 "active in the HiperSockets LAN\n");
1074 break;
1075 default:
1076 break;
1077 }
1078 break;
1079 default:
1080 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1081 cmd->data.diagass.action, CARD_DEVID(card));
1082 }
1083
1084 return rc ? -EIO : 0;
1085 }
1086
1087 static int
1088 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1089 {
1090 struct qeth_cmd_buffer *iob;
1091 struct qeth_ipa_cmd *cmd;
1092
1093 QETH_CARD_TEXT(card, 2, "diagtrac");
1094
1095 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1096 if (!iob)
1097 return -ENOMEM;
1098 cmd = __ipa_cmd(iob);
1099 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1100 cmd->data.diagass.action = diags_cmd;
1101 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1102 }
1103
1104 static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
1105 {
1106 struct qeth_card *card = arg;
1107 struct inet6_dev *in6_dev;
1108 struct in_device *in4_dev;
1109 struct qeth_ipaddr *ipm;
1110 struct qeth_ipaddr tmp;
1111 struct ip_mc_list *im4;
1112 struct ifmcaddr6 *im6;
1113
1114 QETH_CARD_TEXT(card, 4, "addmc");
1115
1116 if (!dev || !(dev->flags & IFF_UP))
1117 goto out;
1118
1119 in4_dev = __in_dev_get_rtnl(dev);
1120 if (!in4_dev)
1121 goto walk_ipv6;
1122
1123 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
1124 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1125 tmp.is_multicast = 1;
1126
1127 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
1128 im4 = rtnl_dereference(im4->next_rcu)) {
1129 tmp.u.a4.addr = im4->multiaddr;
1130
1131 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1132 if (ipm) {
1133 /* for mcast, by-IP match means full match */
1134 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1135 continue;
1136 }
1137
1138 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
1139 if (!ipm)
1140 continue;
1141
1142 hash_add(card->ip_mc_htable, &ipm->hnode,
1143 qeth_l3_ipaddr_hash(ipm));
1144 }
1145
1146 walk_ipv6:
1147 if (!qeth_is_supported(card, IPA_IPV6))
1148 goto out;
1149
1150 in6_dev = __in6_dev_get(dev);
1151 if (!in6_dev)
1152 goto out;
1153
1154 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
1155 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1156 tmp.is_multicast = 1;
1157
1158 read_lock_bh(&in6_dev->lock);
1159 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1160 tmp.u.a6.addr = im6->mca_addr;
1161
1162 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1163 if (ipm) {
1164 /* for mcast, by-IP match means full match */
1165 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1166 continue;
1167 }
1168
1169 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
1170 if (!ipm)
1171 continue;
1172
1173 hash_add(card->ip_mc_htable,
1174 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1175
1176 }
1177 read_unlock_bh(&in6_dev->lock);
1178
1179 out:
1180 return 0;
1181 }
1182
1183 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1184 __be16 proto, u16 vid)
1185 {
1186 struct qeth_card *card = dev->ml_priv;
1187
1188 QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
1189 return 0;
1190 }
1191
1192 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1193 __be16 proto, u16 vid)
1194 {
1195 struct qeth_card *card = dev->ml_priv;
1196
1197 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1198 return 0;
1199 }
1200
1201 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1202 struct qeth_hdr *hdr)
1203 {
1204 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
1205 struct net_device *dev = skb->dev;
1206
1207 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
1208 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
1209 "FAKELL", skb->len);
1210 return;
1211 }
1212
1213 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1214 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1215 ETH_P_IP;
1216 unsigned char tg_addr[ETH_ALEN];
1217
1218 skb_reset_network_header(skb);
1219 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1220 case QETH_CAST_MULTICAST:
1221 if (prot == ETH_P_IP)
1222 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1223 else
1224 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1225 QETH_CARD_STAT_INC(card, rx_multicast);
1226 break;
1227 case QETH_CAST_BROADCAST:
1228 ether_addr_copy(tg_addr, card->dev->broadcast);
1229 QETH_CARD_STAT_INC(card, rx_multicast);
1230 break;
1231 default:
1232 if (card->options.sniffer)
1233 skb->pkt_type = PACKET_OTHERHOST;
1234 ether_addr_copy(tg_addr, card->dev->dev_addr);
1235 }
1236
1237 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1238 card->dev->header_ops->create(skb, card->dev, prot,
1239 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1240 skb->len);
1241 else
1242 card->dev->header_ops->create(skb, card->dev, prot,
1243 tg_addr, "FAKELL", skb->len);
1244 }
1245
1246 /* copy VLAN tag from hdr into skb */
1247 if (!card->options.sniffer &&
1248 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1249 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1250 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1251 hdr->hdr.l3.vlan_id :
1252 hdr->hdr.l3.next_hop.rx.vlan_id;
1253 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1254 }
1255
1256 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1257 }
1258
1259 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1260 int budget, int *done)
1261 {
1262 int work_done = 0;
1263 struct sk_buff *skb;
1264 struct qeth_hdr *hdr;
1265
1266 *done = 0;
1267 WARN_ON_ONCE(!budget);
1268 while (budget) {
1269 skb = qeth_core_get_next_skb(card,
1270 &card->qdio.in_q->bufs[card->rx.b_index],
1271 &card->rx.b_element, &card->rx.e_offset, &hdr);
1272 if (!skb) {
1273 *done = 1;
1274 break;
1275 }
1276
1277 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_LAYER3)
1278 qeth_l3_rebuild_skb(card, skb, hdr);
1279
1280 skb->protocol = eth_type_trans(skb, skb->dev);
1281 QETH_CARD_STAT_INC(card, rx_packets);
1282 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
1283
1284 napi_gro_receive(&card->napi, skb);
1285 work_done++;
1286 budget--;
1287 }
1288 return work_done;
1289 }
1290
1291 static void qeth_l3_stop_card(struct qeth_card *card)
1292 {
1293 QETH_CARD_TEXT(card, 2, "stopcard");
1294
1295 qeth_set_allowed_threads(card, 0, 1);
1296
1297 cancel_work_sync(&card->rx_mode_work);
1298 qeth_l3_drain_rx_mode_cache(card);
1299
1300 if (card->options.sniffer &&
1301 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1302 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1303
1304 if (card->state == CARD_STATE_SOFTSETUP) {
1305 qeth_l3_clear_ip_htable(card, 1);
1306 qeth_clear_ipacmd_list(card);
1307 card->state = CARD_STATE_HARDSETUP;
1308 }
1309 if (card->state == CARD_STATE_HARDSETUP) {
1310 qeth_drain_output_queues(card);
1311 qeth_clear_working_pool_list(card);
1312 card->state = CARD_STATE_DOWN;
1313 }
1314
1315 qeth_qdio_clear_card(card, 0);
1316 flush_workqueue(card->event_wq);
1317 card->info.promisc_mode = 0;
1318 }
1319
1320 static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1321 {
1322 bool enable = card->dev->flags & IFF_PROMISC;
1323
1324 if (card->info.promisc_mode == enable)
1325 return;
1326
1327 if (IS_VM_NIC(card)) { /* Guestlan trace */
1328 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1329 qeth_setadp_promisc_mode(card, enable);
1330 } else if (card->options.sniffer && /* HiperSockets trace */
1331 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1332 if (enable) {
1333 QETH_CARD_TEXT(card, 3, "+promisc");
1334 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1335 } else {
1336 QETH_CARD_TEXT(card, 3, "-promisc");
1337 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1338 }
1339 }
1340 }
1341
1342 static void qeth_l3_rx_mode_work(struct work_struct *work)
1343 {
1344 struct qeth_card *card = container_of(work, struct qeth_card,
1345 rx_mode_work);
1346 struct qeth_ipaddr *addr;
1347 struct hlist_node *tmp;
1348 int i, rc;
1349
1350 QETH_CARD_TEXT(card, 3, "setmulti");
1351
1352 if (!card->options.sniffer) {
1353 rtnl_lock();
1354 qeth_l3_add_mcast_rtnl(card->dev, 0, card);
1355 if (qeth_is_supported(card, IPA_FULL_VLAN))
1356 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
1357 rtnl_unlock();
1358
1359 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1360 switch (addr->disp_flag) {
1361 case QETH_DISP_ADDR_DELETE:
1362 rc = qeth_l3_deregister_addr_entry(card, addr);
1363 if (!rc || rc == -ENOENT) {
1364 hash_del(&addr->hnode);
1365 kfree(addr);
1366 }
1367 break;
1368 case QETH_DISP_ADDR_ADD:
1369 rc = qeth_l3_register_addr_entry(card, addr);
1370 if (rc && rc != -ENETDOWN) {
1371 hash_del(&addr->hnode);
1372 kfree(addr);
1373 break;
1374 }
1375 addr->ref_counter = 1;
1376 /* fall through */
1377 default:
1378 /* for next call to set_rx_mode(): */
1379 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1380 }
1381 }
1382 }
1383
1384 qeth_l3_set_promisc_mode(card);
1385 }
1386
1387 static int qeth_l3_arp_makerc(u16 rc)
1388 {
1389 switch (rc) {
1390 case IPA_RC_SUCCESS:
1391 return 0;
1392 case QETH_IPA_ARP_RC_NOTSUPP:
1393 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1394 return -EOPNOTSUPP;
1395 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1396 return -EINVAL;
1397 case QETH_IPA_ARP_RC_Q_NO_DATA:
1398 return -ENOENT;
1399 default:
1400 return -EIO;
1401 }
1402 }
1403
1404 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1405 unsigned long data)
1406 {
1407 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1408
1409 qeth_setassparms_cb(card, reply, data);
1410 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1411 }
1412
1413 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1414 {
1415 struct qeth_cmd_buffer *iob;
1416 int rc;
1417
1418 QETH_CARD_TEXT(card, 3, "arpstnoe");
1419
1420 /*
1421 * currently GuestLAN only supports the ARP assist function
1422 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1423 * thus we say EOPNOTSUPP for this ARP function
1424 */
1425 if (IS_VM_NIC(card))
1426 return -EOPNOTSUPP;
1427 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1428 return -EOPNOTSUPP;
1429 }
1430
1431 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1432 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1433 SETASS_DATA_SIZEOF(flags_32bit),
1434 QETH_PROT_IPV4);
1435 if (!iob)
1436 return -ENOMEM;
1437
1438 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1439 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1440 if (rc)
1441 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1442 CARD_DEVID(card), rc);
1443 return rc;
1444 }
1445
1446 static __u32 get_arp_entry_size(struct qeth_card *card,
1447 struct qeth_arp_query_data *qdata,
1448 struct qeth_arp_entrytype *type, __u8 strip_entries)
1449 {
1450 __u32 rc;
1451 __u8 is_hsi;
1452
1453 is_hsi = qdata->reply_bits == 5;
1454 if (type->ip == QETHARP_IP_ADDR_V4) {
1455 QETH_CARD_TEXT(card, 4, "arpev4");
1456 if (strip_entries) {
1457 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1458 sizeof(struct qeth_arp_qi_entry7_short);
1459 } else {
1460 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1461 sizeof(struct qeth_arp_qi_entry7);
1462 }
1463 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1464 QETH_CARD_TEXT(card, 4, "arpev6");
1465 if (strip_entries) {
1466 rc = is_hsi ?
1467 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1468 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1469 } else {
1470 rc = is_hsi ?
1471 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1472 sizeof(struct qeth_arp_qi_entry7_ipv6);
1473 }
1474 } else {
1475 QETH_CARD_TEXT(card, 4, "arpinv");
1476 rc = 0;
1477 }
1478
1479 return rc;
1480 }
1481
1482 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1483 {
1484 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1485 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1486 }
1487
1488 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1489 struct qeth_reply *reply, unsigned long data)
1490 {
1491 struct qeth_ipa_cmd *cmd;
1492 struct qeth_arp_query_data *qdata;
1493 struct qeth_arp_query_info *qinfo;
1494 int e;
1495 int entrybytes_done;
1496 int stripped_bytes;
1497 __u8 do_strip_entries;
1498
1499 QETH_CARD_TEXT(card, 3, "arpquecb");
1500
1501 qinfo = (struct qeth_arp_query_info *) reply->param;
1502 cmd = (struct qeth_ipa_cmd *) data;
1503 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1504 if (cmd->hdr.return_code) {
1505 QETH_CARD_TEXT(card, 4, "arpcberr");
1506 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1507 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1508 }
1509 if (cmd->data.setassparms.hdr.return_code) {
1510 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1511 QETH_CARD_TEXT(card, 4, "setaperr");
1512 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1513 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1514 }
1515 qdata = &cmd->data.setassparms.data.query_arp;
1516 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1517
1518 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1519 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1520 entrybytes_done = 0;
1521 for (e = 0; e < qdata->no_entries; ++e) {
1522 char *cur_entry;
1523 __u32 esize;
1524 struct qeth_arp_entrytype *etype;
1525
1526 cur_entry = &qdata->data + entrybytes_done;
1527 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1528 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1529 QETH_CARD_TEXT(card, 4, "pmis");
1530 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1531 break;
1532 }
1533 esize = get_arp_entry_size(card, qdata, etype,
1534 do_strip_entries);
1535 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1536 if (!esize)
1537 break;
1538
1539 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1540 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1541 memset(qinfo->udata, 0, 4);
1542 return -ENOSPC;
1543 }
1544
1545 memcpy(qinfo->udata + qinfo->udata_offset,
1546 &qdata->data + entrybytes_done + stripped_bytes,
1547 esize);
1548 entrybytes_done += esize + stripped_bytes;
1549 qinfo->udata_offset += esize;
1550 ++qinfo->no_entries;
1551 }
1552 /* check if all replies received ... */
1553 if (cmd->data.setassparms.hdr.seq_no <
1554 cmd->data.setassparms.hdr.number_of_replies)
1555 return 1;
1556 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1557 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1558 /* keep STRIP_ENTRIES flag so the user program can distinguish
1559 * stripped entries from normal ones */
1560 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1561 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1562 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1563 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1564 return 0;
1565 }
1566
1567 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1568 enum qeth_prot_versions prot,
1569 struct qeth_arp_query_info *qinfo)
1570 {
1571 struct qeth_cmd_buffer *iob;
1572 struct qeth_ipa_cmd *cmd;
1573 int rc;
1574
1575 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1576
1577 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1578 IPA_CMD_ASS_ARP_QUERY_INFO,
1579 SETASS_DATA_SIZEOF(query_arp), prot);
1580 if (!iob)
1581 return -ENOMEM;
1582 cmd = __ipa_cmd(iob);
1583 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1584 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1585 if (rc)
1586 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1587 CARD_DEVID(card), rc);
1588 return rc;
1589 }
1590
1591 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1592 {
1593 struct qeth_arp_query_info qinfo = {0, };
1594 int rc;
1595
1596 QETH_CARD_TEXT(card, 3, "arpquery");
1597
1598 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1599 IPA_ARP_PROCESSING)) {
1600 QETH_CARD_TEXT(card, 3, "arpqnsup");
1601 rc = -EOPNOTSUPP;
1602 goto out;
1603 }
1604 /* get size of userspace buffer and mask_bits -> 6 bytes */
1605 if (copy_from_user(&qinfo, udata, 6)) {
1606 rc = -EFAULT;
1607 goto out;
1608 }
1609 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1610 if (!qinfo.udata) {
1611 rc = -ENOMEM;
1612 goto out;
1613 }
1614 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1615 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1616 if (rc) {
1617 if (copy_to_user(udata, qinfo.udata, 4))
1618 rc = -EFAULT;
1619 goto free_and_out;
1620 }
1621 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1622 /* fails in case of GuestLAN QDIO mode */
1623 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1624 }
1625 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1626 QETH_CARD_TEXT(card, 4, "qactf");
1627 rc = -EFAULT;
1628 goto free_and_out;
1629 }
1630 QETH_CARD_TEXT(card, 4, "qacts");
1631
1632 free_and_out:
1633 kfree(qinfo.udata);
1634 out:
1635 return rc;
1636 }
1637
1638 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1639 struct qeth_arp_cache_entry *entry,
1640 enum qeth_arp_process_subcmds arp_cmd)
1641 {
1642 struct qeth_arp_cache_entry *cmd_entry;
1643 struct qeth_cmd_buffer *iob;
1644 int rc;
1645
1646 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1647 QETH_CARD_TEXT(card, 3, "arpadd");
1648 else
1649 QETH_CARD_TEXT(card, 3, "arpdel");
1650
1651 /*
1652 * currently GuestLAN only supports the ARP assist function
1653 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1654 * thus we say EOPNOTSUPP for this ARP function
1655 */
1656 if (IS_VM_NIC(card))
1657 return -EOPNOTSUPP;
1658 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1659 return -EOPNOTSUPP;
1660 }
1661
1662 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1663 SETASS_DATA_SIZEOF(arp_entry),
1664 QETH_PROT_IPV4);
1665 if (!iob)
1666 return -ENOMEM;
1667
1668 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1669 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1670 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1671 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1672 if (rc)
1673 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1674 arp_cmd, CARD_DEVID(card), rc);
1675 return rc;
1676 }
1677
1678 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1679 {
1680 struct qeth_cmd_buffer *iob;
1681 int rc;
1682
1683 QETH_CARD_TEXT(card, 3, "arpflush");
1684
1685 /*
1686 * currently GuestLAN only supports the ARP assist function
1687 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1688 * thus we say EOPNOTSUPP for this ARP function
1689 */
1690 if (IS_VM_NIC(card) || IS_IQD(card))
1691 return -EOPNOTSUPP;
1692 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1693 return -EOPNOTSUPP;
1694 }
1695
1696 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1697 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1698 QETH_PROT_IPV4);
1699 if (!iob)
1700 return -ENOMEM;
1701
1702 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1703 if (rc)
1704 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1705 CARD_DEVID(card), rc);
1706 return rc;
1707 }
1708
1709 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1710 {
1711 struct qeth_card *card = dev->ml_priv;
1712 struct qeth_arp_cache_entry arp_entry;
1713 enum qeth_arp_process_subcmds arp_cmd;
1714 int rc = 0;
1715
1716 switch (cmd) {
1717 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1718 if (!capable(CAP_NET_ADMIN)) {
1719 rc = -EPERM;
1720 break;
1721 }
1722 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1723 break;
1724 case SIOC_QETH_ARP_QUERY_INFO:
1725 if (!capable(CAP_NET_ADMIN)) {
1726 rc = -EPERM;
1727 break;
1728 }
1729 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1730 break;
1731 case SIOC_QETH_ARP_ADD_ENTRY:
1732 case SIOC_QETH_ARP_REMOVE_ENTRY:
1733 if (!capable(CAP_NET_ADMIN))
1734 return -EPERM;
1735 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1736 return -EFAULT;
1737
1738 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1739 IPA_CMD_ASS_ARP_ADD_ENTRY :
1740 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1741 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1742 case SIOC_QETH_ARP_FLUSH_CACHE:
1743 if (!capable(CAP_NET_ADMIN)) {
1744 rc = -EPERM;
1745 break;
1746 }
1747 rc = qeth_l3_arp_flush_cache(card);
1748 break;
1749 default:
1750 rc = -EOPNOTSUPP;
1751 }
1752 return rc;
1753 }
1754
1755 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1756 int ipv)
1757 {
1758 struct neighbour *n = NULL;
1759
1760 if (dst)
1761 n = dst_neigh_lookup_skb(dst, skb);
1762
1763 if (n) {
1764 int cast_type = n->type;
1765
1766 neigh_release(n);
1767 if ((cast_type == RTN_BROADCAST) ||
1768 (cast_type == RTN_MULTICAST) ||
1769 (cast_type == RTN_ANYCAST))
1770 return cast_type;
1771 return RTN_UNICAST;
1772 }
1773
1774 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1775 switch (ipv) {
1776 case 4:
1777 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1778 return RTN_BROADCAST;
1779 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1780 RTN_MULTICAST : RTN_UNICAST;
1781 case 6:
1782 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1783 RTN_MULTICAST : RTN_UNICAST;
1784 default:
1785 /* ... and MAC address */
1786 return qeth_get_ether_cast_type(skb);
1787 }
1788 }
1789
1790 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1791 {
1792 int ipv = qeth_get_ip_version(skb);
1793 struct dst_entry *dst;
1794 int cast_type;
1795
1796 rcu_read_lock();
1797 dst = qeth_dst_check_rcu(skb, ipv);
1798 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1799 rcu_read_unlock();
1800
1801 return cast_type;
1802 }
1803
1804 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1805 {
1806 if (cast_type == RTN_MULTICAST)
1807 return QETH_CAST_MULTICAST;
1808 if (cast_type == RTN_ANYCAST)
1809 return QETH_CAST_ANYCAST;
1810 if (cast_type == RTN_BROADCAST)
1811 return QETH_CAST_BROADCAST;
1812 return QETH_CAST_UNICAST;
1813 }
1814
1815 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1816 struct qeth_hdr *hdr, struct sk_buff *skb,
1817 int ipv, unsigned int data_len)
1818 {
1819 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1820 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1821 struct qeth_card *card = queue->card;
1822 struct dst_entry *dst;
1823 int cast_type;
1824
1825 hdr->hdr.l3.length = data_len;
1826
1827 if (skb_is_gso(skb)) {
1828 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1829 } else {
1830 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1831
1832 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1833 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1834 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1835 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1836 iucv_trans_hdr(skb)->destUserID, 8);
1837 return;
1838 }
1839
1840 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1841 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1842 /* some HW requires combined L3+L4 csum offload: */
1843 if (ipv == 4)
1844 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1845 }
1846 }
1847
1848 if (ipv == 4 || IS_IQD(card)) {
1849 /* NETIF_F_HW_VLAN_CTAG_TX */
1850 if (skb_vlan_tag_present(skb)) {
1851 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1852 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1853 }
1854 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1855 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1856 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1857 }
1858
1859 rcu_read_lock();
1860 dst = qeth_dst_check_rcu(skb, ipv);
1861
1862 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1863 cast_type = RTN_UNICAST;
1864 else
1865 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1866 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1867
1868 if (ipv == 4) {
1869 struct rtable *rt = (struct rtable *) dst;
1870
1871 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
1872 rt_nexthop(rt, ip_hdr(skb)->daddr) :
1873 ip_hdr(skb)->daddr;
1874 } else if (ipv == 6) {
1875 struct rt6_info *rt = (struct rt6_info *) dst;
1876
1877 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
1878 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
1879 else
1880 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
1881
1882 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1883 if (!IS_IQD(card))
1884 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1885 } else {
1886 /* OSA only: */
1887 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1888 }
1889 rcu_read_unlock();
1890 }
1891
1892 static void qeth_l3_fixup_headers(struct sk_buff *skb)
1893 {
1894 struct iphdr *iph = ip_hdr(skb);
1895
1896 /* this is safe, IPv6 traffic takes a different path */
1897 if (skb->ip_summed == CHECKSUM_PARTIAL)
1898 iph->check = 0;
1899 if (skb_is_gso(skb)) {
1900 iph->tot_len = 0;
1901 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1902 iph->daddr, 0);
1903 }
1904 }
1905
1906 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1907 struct qeth_qdio_out_q *queue, int ipv)
1908 {
1909 unsigned int hw_hdr_len;
1910 int rc;
1911
1912 /* re-use the L2 header area for the HW header: */
1913 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1914 sizeof(struct qeth_hdr);
1915 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1916 if (rc)
1917 return rc;
1918 skb_pull(skb, ETH_HLEN);
1919
1920 qeth_l3_fixup_headers(skb);
1921 return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
1922 }
1923
1924 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1925 struct net_device *dev)
1926 {
1927 struct qeth_card *card = dev->ml_priv;
1928 u16 txq = skb_get_queue_mapping(skb);
1929 int ipv = qeth_get_ip_version(skb);
1930 struct qeth_qdio_out_q *queue;
1931 int rc;
1932
1933 if (!skb_is_gso(skb))
1934 qdisc_skb_cb(skb)->pkt_len = skb->len;
1935 if (IS_IQD(card)) {
1936 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1937
1938 if (card->options.sniffer)
1939 goto tx_drop;
1940 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
1941 (card->options.cq == QETH_CQ_ENABLED &&
1942 skb->protocol != htons(ETH_P_AF_IUCV)))
1943 goto tx_drop;
1944 } else {
1945 queue = card->qdio.out_qs[txq];
1946 }
1947
1948 if (!(dev->flags & IFF_BROADCAST) &&
1949 qeth_l3_get_cast_type(skb) == RTN_BROADCAST)
1950 goto tx_drop;
1951
1952 if (ipv == 4 || IS_IQD(card))
1953 rc = qeth_l3_xmit(card, skb, queue, ipv);
1954 else
1955 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
1956
1957 if (!rc)
1958 return NETDEV_TX_OK;
1959
1960 tx_drop:
1961 QETH_TXQ_STAT_INC(queue, tx_dropped);
1962 kfree_skb(skb);
1963 return NETDEV_TX_OK;
1964 }
1965
1966 static void qeth_l3_set_rx_mode(struct net_device *dev)
1967 {
1968 struct qeth_card *card = dev->ml_priv;
1969
1970 schedule_work(&card->rx_mode_work);
1971 }
1972
1973 /*
1974 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
1975 * NOARP on the netdevice is no option because it also turns off neighbor
1976 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
1977 * arp resolution but we want the hard header (packet socket will work
1978 * e.g. tcpdump)
1979 */
1980 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1981 {
1982 n->nud_state = NUD_NOARP;
1983 memcpy(n->ha, "FAKELL", 6);
1984 n->output = n->ops->connected_output;
1985 return 0;
1986 }
1987
1988 static int
1989 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1990 {
1991 if (np->tbl->family == AF_INET)
1992 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1993
1994 return 0;
1995 }
1996
1997 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1998 struct net_device *dev,
1999 netdev_features_t features)
2000 {
2001 if (qeth_get_ip_version(skb) != 4)
2002 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2003 return qeth_features_check(skb, dev, features);
2004 }
2005
2006 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
2007 struct net_device *sb_dev)
2008 {
2009 return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb),
2010 sb_dev);
2011 }
2012
2013 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
2014 struct net_device *sb_dev)
2015 {
2016 struct qeth_card *card = dev->ml_priv;
2017
2018 return qeth_get_priority_queue(card, skb);
2019 }
2020
2021 static const struct net_device_ops qeth_l3_netdev_ops = {
2022 .ndo_open = qeth_open,
2023 .ndo_stop = qeth_stop,
2024 .ndo_get_stats64 = qeth_get_stats64,
2025 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2026 .ndo_select_queue = qeth_l3_iqd_select_queue,
2027 .ndo_validate_addr = eth_validate_addr,
2028 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2029 .ndo_do_ioctl = qeth_do_ioctl,
2030 .ndo_fix_features = qeth_fix_features,
2031 .ndo_set_features = qeth_set_features,
2032 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2033 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2034 .ndo_tx_timeout = qeth_tx_timeout,
2035 };
2036
2037 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2038 .ndo_open = qeth_open,
2039 .ndo_stop = qeth_stop,
2040 .ndo_get_stats64 = qeth_get_stats64,
2041 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2042 .ndo_features_check = qeth_l3_osa_features_check,
2043 .ndo_select_queue = qeth_l3_osa_select_queue,
2044 .ndo_validate_addr = eth_validate_addr,
2045 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2046 .ndo_do_ioctl = qeth_do_ioctl,
2047 .ndo_fix_features = qeth_fix_features,
2048 .ndo_set_features = qeth_set_features,
2049 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2050 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2051 .ndo_tx_timeout = qeth_tx_timeout,
2052 .ndo_neigh_setup = qeth_l3_neigh_setup,
2053 };
2054
2055 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
2056 {
2057 unsigned int headroom;
2058 int rc;
2059
2060 if (IS_OSD(card) || IS_OSX(card)) {
2061 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2062 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2063 pr_info("qeth_l3: ignoring TR device\n");
2064 return -ENODEV;
2065 }
2066
2067 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2068
2069 /*IPv6 address autoconfiguration stuff*/
2070 qeth_l3_get_unique_id(card);
2071 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2072 card->dev->dev_id = card->info.unique_id & 0xffff;
2073
2074 if (!IS_VM_NIC(card)) {
2075 card->dev->features |= NETIF_F_SG;
2076 card->dev->hw_features |= NETIF_F_TSO |
2077 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2078 card->dev->vlan_features |= NETIF_F_TSO |
2079 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2080 }
2081
2082 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2083 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2084 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2085 }
2086 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2087 card->dev->hw_features |= NETIF_F_TSO6;
2088 card->dev->vlan_features |= NETIF_F_TSO6;
2089 }
2090
2091 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2092 if (card->dev->hw_features & NETIF_F_TSO6)
2093 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2094 else if (card->dev->hw_features & NETIF_F_TSO)
2095 headroom = sizeof(struct qeth_hdr_tso);
2096 else
2097 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2098 } else if (IS_IQD(card)) {
2099 card->dev->flags |= IFF_NOARP;
2100 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2101 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2102
2103 rc = qeth_l3_iqd_read_initial_mac(card);
2104 if (rc)
2105 goto out;
2106 } else
2107 return -ENODEV;
2108
2109 card->dev->needed_headroom = headroom;
2110 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2111 NETIF_F_HW_VLAN_CTAG_RX |
2112 NETIF_F_HW_VLAN_CTAG_FILTER;
2113
2114 netif_keep_dst(card->dev);
2115 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2116 netif_set_gso_max_size(card->dev,
2117 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2118
2119 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2120 rc = register_netdev(card->dev);
2121 if (!rc && carrier_ok)
2122 netif_carrier_on(card->dev);
2123
2124 out:
2125 if (rc)
2126 card->dev->netdev_ops = NULL;
2127 return rc;
2128 }
2129
2130 static const struct device_type qeth_l3_devtype = {
2131 .name = "qeth_layer3",
2132 .groups = qeth_l3_attr_groups,
2133 };
2134
2135 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2136 {
2137 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2138 int rc;
2139
2140 hash_init(card->ip_htable);
2141 mutex_init(&card->ip_lock);
2142 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
2143 dev_name(&gdev->dev));
2144 if (!card->cmd_wq)
2145 return -ENOMEM;
2146
2147 if (gdev->dev.type == &qeth_generic_devtype) {
2148 rc = qeth_l3_create_device_attributes(&gdev->dev);
2149 if (rc) {
2150 destroy_workqueue(card->cmd_wq);
2151 return rc;
2152 }
2153 }
2154
2155 hash_init(card->ip_mc_htable);
2156 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
2157 return 0;
2158 }
2159
2160 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2161 {
2162 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2163
2164 if (cgdev->dev.type == &qeth_generic_devtype)
2165 qeth_l3_remove_device_attributes(&cgdev->dev);
2166
2167 qeth_set_allowed_threads(card, 0, 1);
2168 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2169
2170 if (cgdev->state == CCWGROUP_ONLINE)
2171 qeth_l3_set_offline(cgdev);
2172
2173 cancel_work_sync(&card->close_dev_work);
2174 if (qeth_netdev_is_registered(card->dev))
2175 unregister_netdev(card->dev);
2176
2177 flush_workqueue(card->cmd_wq);
2178 destroy_workqueue(card->cmd_wq);
2179 qeth_l3_clear_ip_htable(card, 0);
2180 qeth_l3_clear_ipato_list(card);
2181 }
2182
2183 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2184 {
2185 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2186 struct net_device *dev = card->dev;
2187 int rc = 0;
2188 bool carrier_ok;
2189
2190 mutex_lock(&card->discipline_mutex);
2191 mutex_lock(&card->conf_mutex);
2192 QETH_CARD_TEXT(card, 2, "setonlin");
2193
2194 rc = qeth_core_hardsetup_card(card, &carrier_ok);
2195 if (rc) {
2196 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2197 rc = -ENODEV;
2198 goto out_remove;
2199 }
2200
2201 card->state = CARD_STATE_HARDSETUP;
2202 qeth_print_status_message(card);
2203
2204 /* softsetup */
2205 QETH_CARD_TEXT(card, 2, "softsetp");
2206
2207 rc = qeth_l3_setadapter_parms(card);
2208 if (rc)
2209 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2210 if (!card->options.sniffer) {
2211 rc = qeth_l3_start_ipassists(card);
2212 if (rc) {
2213 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2214 goto out_remove;
2215 }
2216 rc = qeth_l3_setrouting_v4(card);
2217 if (rc)
2218 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
2219 rc = qeth_l3_setrouting_v6(card);
2220 if (rc)
2221 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
2222 }
2223
2224 rc = qeth_init_qdio_queues(card);
2225 if (rc) {
2226 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2227 rc = -ENODEV;
2228 goto out_remove;
2229 }
2230 card->state = CARD_STATE_SOFTSETUP;
2231
2232 qeth_set_allowed_threads(card, 0xffffffff, 0);
2233 qeth_l3_recover_ip(card);
2234
2235 if (!qeth_netdev_is_registered(dev)) {
2236 rc = qeth_l3_setup_netdev(card, carrier_ok);
2237 if (rc)
2238 goto out_remove;
2239 } else {
2240 rtnl_lock();
2241 if (carrier_ok)
2242 netif_carrier_on(dev);
2243 else
2244 netif_carrier_off(dev);
2245
2246 netif_device_attach(dev);
2247 qeth_enable_hw_features(dev);
2248
2249 if (card->info.open_when_online) {
2250 card->info.open_when_online = 0;
2251 dev_open(dev, NULL);
2252 }
2253 rtnl_unlock();
2254 }
2255 qeth_trace_features(card);
2256 /* let user_space know that device is online */
2257 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2258 mutex_unlock(&card->conf_mutex);
2259 mutex_unlock(&card->discipline_mutex);
2260 return 0;
2261 out_remove:
2262 qeth_l3_stop_card(card);
2263 qeth_stop_channel(&card->data);
2264 qeth_stop_channel(&card->write);
2265 qeth_stop_channel(&card->read);
2266 qdio_free(CARD_DDEV(card));
2267
2268 mutex_unlock(&card->conf_mutex);
2269 mutex_unlock(&card->discipline_mutex);
2270 return rc;
2271 }
2272
2273 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2274 int recovery_mode)
2275 {
2276 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2277 int rc = 0, rc2 = 0, rc3 = 0;
2278
2279 mutex_lock(&card->discipline_mutex);
2280 mutex_lock(&card->conf_mutex);
2281 QETH_CARD_TEXT(card, 3, "setoffl");
2282
2283 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2284 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2285 card->info.hwtrap = 1;
2286 }
2287
2288 rtnl_lock();
2289 card->info.open_when_online = card->dev->flags & IFF_UP;
2290 dev_close(card->dev);
2291 netif_device_detach(card->dev);
2292 netif_carrier_off(card->dev);
2293 rtnl_unlock();
2294
2295 qeth_l3_stop_card(card);
2296 if (card->options.cq == QETH_CQ_ENABLED) {
2297 rtnl_lock();
2298 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2299 rtnl_unlock();
2300 }
2301
2302 rc = qeth_stop_channel(&card->data);
2303 rc2 = qeth_stop_channel(&card->write);
2304 rc3 = qeth_stop_channel(&card->read);
2305 if (!rc)
2306 rc = (rc2) ? rc2 : rc3;
2307 if (rc)
2308 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2309 qdio_free(CARD_DDEV(card));
2310
2311 /* let user_space know that device is offline */
2312 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2313 mutex_unlock(&card->conf_mutex);
2314 mutex_unlock(&card->discipline_mutex);
2315 return 0;
2316 }
2317
2318 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2319 {
2320 return __qeth_l3_set_offline(cgdev, 0);
2321 }
2322
2323 static int qeth_l3_recover(void *ptr)
2324 {
2325 struct qeth_card *card;
2326 int rc = 0;
2327
2328 card = (struct qeth_card *) ptr;
2329 QETH_CARD_TEXT(card, 2, "recover1");
2330 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2331 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2332 return 0;
2333 QETH_CARD_TEXT(card, 2, "recover2");
2334 dev_warn(&card->gdev->dev,
2335 "A recovery process has been started for the device\n");
2336 __qeth_l3_set_offline(card->gdev, 1);
2337 rc = qeth_l3_set_online(card->gdev);
2338 if (!rc)
2339 dev_info(&card->gdev->dev,
2340 "Device successfully recovered!\n");
2341 else {
2342 ccwgroup_set_offline(card->gdev);
2343 dev_warn(&card->gdev->dev, "The qeth device driver "
2344 "failed to recover an error on the device\n");
2345 }
2346 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2347 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2348 return 0;
2349 }
2350
2351 /* Returns zero if the command is successfully "consumed" */
2352 static int qeth_l3_control_event(struct qeth_card *card,
2353 struct qeth_ipa_cmd *cmd)
2354 {
2355 return 1;
2356 }
2357
2358 struct qeth_discipline qeth_l3_discipline = {
2359 .devtype = &qeth_l3_devtype,
2360 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2361 .recover = qeth_l3_recover,
2362 .setup = qeth_l3_probe_device,
2363 .remove = qeth_l3_remove_device,
2364 .set_online = qeth_l3_set_online,
2365 .set_offline = qeth_l3_set_offline,
2366 .do_ioctl = qeth_l3_do_ioctl,
2367 .control_event_handler = qeth_l3_control_event,
2368 };
2369 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2370
2371 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2372 struct qeth_ipaddr *addr,
2373 unsigned long event)
2374 {
2375 switch (event) {
2376 case NETDEV_UP:
2377 qeth_l3_modify_ip(card, addr, true);
2378 return NOTIFY_OK;
2379 case NETDEV_DOWN:
2380 qeth_l3_modify_ip(card, addr, false);
2381 return NOTIFY_OK;
2382 default:
2383 return NOTIFY_DONE;
2384 }
2385 }
2386
2387 struct qeth_l3_ip_event_work {
2388 struct work_struct work;
2389 struct qeth_card *card;
2390 struct qeth_ipaddr addr;
2391 };
2392
2393 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2394
2395 static void qeth_l3_add_ip_worker(struct work_struct *work)
2396 {
2397 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2398
2399 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2400 kfree(work);
2401 }
2402
2403 static void qeth_l3_delete_ip_worker(struct work_struct *work)
2404 {
2405 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2406
2407 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2408 kfree(work);
2409 }
2410
2411 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2412 {
2413 if (is_vlan_dev(dev))
2414 dev = vlan_dev_real_dev(dev);
2415 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2416 dev->netdev_ops == &qeth_l3_netdev_ops)
2417 return (struct qeth_card *) dev->ml_priv;
2418 return NULL;
2419 }
2420
2421 static int qeth_l3_ip_event(struct notifier_block *this,
2422 unsigned long event, void *ptr)
2423 {
2424
2425 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2426 struct net_device *dev = ifa->ifa_dev->dev;
2427 struct qeth_ipaddr addr;
2428 struct qeth_card *card;
2429
2430 if (dev_net(dev) != &init_net)
2431 return NOTIFY_DONE;
2432
2433 card = qeth_l3_get_card_from_dev(dev);
2434 if (!card)
2435 return NOTIFY_DONE;
2436 QETH_CARD_TEXT(card, 3, "ipevent");
2437
2438 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2439 addr.u.a4.addr = ifa->ifa_address;
2440 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2441
2442 return qeth_l3_handle_ip_event(card, &addr, event);
2443 }
2444
2445 static struct notifier_block qeth_l3_ip_notifier = {
2446 qeth_l3_ip_event,
2447 NULL,
2448 };
2449
2450 static int qeth_l3_ip6_event(struct notifier_block *this,
2451 unsigned long event, void *ptr)
2452 {
2453 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2454 struct net_device *dev = ifa->idev->dev;
2455 struct qeth_l3_ip_event_work *ip_work;
2456 struct qeth_card *card;
2457
2458 if (event != NETDEV_UP && event != NETDEV_DOWN)
2459 return NOTIFY_DONE;
2460
2461 card = qeth_l3_get_card_from_dev(dev);
2462 if (!card)
2463 return NOTIFY_DONE;
2464 QETH_CARD_TEXT(card, 3, "ip6event");
2465 if (!qeth_is_supported(card, IPA_IPV6))
2466 return NOTIFY_DONE;
2467
2468 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2469 if (!ip_work)
2470 return NOTIFY_DONE;
2471
2472 if (event == NETDEV_UP)
2473 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2474 else
2475 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2476
2477 ip_work->card = card;
2478 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2479 QETH_PROT_IPV6);
2480 ip_work->addr.u.a6.addr = ifa->addr;
2481 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2482
2483 queue_work(card->cmd_wq, &ip_work->work);
2484 return NOTIFY_OK;
2485 }
2486
2487 static struct notifier_block qeth_l3_ip6_notifier = {
2488 qeth_l3_ip6_event,
2489 NULL,
2490 };
2491
2492 static int qeth_l3_register_notifiers(void)
2493 {
2494 int rc;
2495
2496 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2497 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2498 if (rc)
2499 return rc;
2500 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2501 if (rc) {
2502 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2503 return rc;
2504 }
2505 return 0;
2506 }
2507
2508 static void qeth_l3_unregister_notifiers(void)
2509 {
2510 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2511 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2512 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2513 }
2514
2515 static int __init qeth_l3_init(void)
2516 {
2517 pr_info("register layer 3 discipline\n");
2518 return qeth_l3_register_notifiers();
2519 }
2520
2521 static void __exit qeth_l3_exit(void)
2522 {
2523 qeth_l3_unregister_notifiers();
2524 pr_info("unregister layer 3 discipline\n");
2525 }
2526
2527 module_init(qeth_l3_init);
2528 module_exit(qeth_l3_exit);
2529 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2530 MODULE_DESCRIPTION("qeth layer 3 discipline");
2531 MODULE_LICENSE("GPL");
Linux with added FPC-III support