[S390] sparse: fix sparse static warnings
[linux-2.6.git] / drivers / s390 / net / qeth_l3_main.c
1 /*
2  *  drivers/s390/net/qeth_l3_main.c
3  *
4  *    Copyright IBM Corp. 2007, 2009
5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6  *               Frank Pavlic <fpavlic@de.ibm.com>,
7  *               Thomas Spatzier <tspat@de.ibm.com>,
8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
9  */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/bitops.h>
17 #include <linux/string.h>
18 #include <linux/errno.h>
19 #include <linux/kernel.h>
20 #include <linux/etherdevice.h>
21 #include <linux/mii.h>
22 #include <linux/ip.h>
23 #include <linux/ipv6.h>
24 #include <linux/inetdevice.h>
25 #include <linux/igmp.h>
26 #include <linux/slab.h>
27 #include <linux/if_vlan.h>
28
29 #include <net/ip.h>
30 #include <net/arp.h>
31 #include <net/ip6_checksum.h>
32 #include <net/iucv/af_iucv.h>
33
34 #include "qeth_l3.h"
35
36
37 static int qeth_l3_set_offline(struct ccwgroup_device *);
38 static int qeth_l3_recover(void *);
39 static int qeth_l3_stop(struct net_device *);
40 static void qeth_l3_set_multicast_list(struct net_device *);
41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
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 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
48
49 static int qeth_l3_isxdigit(char *buf)
50 {
51         while (*buf) {
52                 if (!isxdigit(*buf++))
53                         return 0;
54         }
55         return 1;
56 }
57
58 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
59 {
60         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
61 }
62
63 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
64 {
65         int count = 0, rc = 0;
66         int in[4];
67         char c;
68
69         rc = sscanf(buf, "%u.%u.%u.%u%c",
70                     &in[0], &in[1], &in[2], &in[3], &c);
71         if (rc != 4 && (rc != 5 || c != '\n'))
72                 return -EINVAL;
73         for (count = 0; count < 4; count++) {
74                 if (in[count] > 255)
75                         return -EINVAL;
76                 addr[count] = in[count];
77         }
78         return 0;
79 }
80
81 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
82 {
83         sprintf(buf, "%pI6", addr);
84 }
85
86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
87 {
88         const char *end, *end_tmp, *start;
89         __u16 *in;
90         char num[5];
91         int num2, cnt, out, found, save_cnt;
92         unsigned short in_tmp[8] = {0, };
93
94         cnt = out = found = save_cnt = num2 = 0;
95         end = start = buf;
96         in = (__u16 *) addr;
97         memset(in, 0, 16);
98         while (*end) {
99                 end = strchr(start, ':');
100                 if (end == NULL) {
101                         end = buf + strlen(buf);
102                         end_tmp = strchr(start, '\n');
103                         if (end_tmp != NULL)
104                                 end = end_tmp;
105                         out = 1;
106                 }
107                 if ((end - start)) {
108                         memset(num, 0, 5);
109                         if ((end - start) > 4)
110                                 return -EINVAL;
111                         memcpy(num, start, end - start);
112                         if (!qeth_l3_isxdigit(num))
113                                 return -EINVAL;
114                         sscanf(start, "%x", &num2);
115                         if (found)
116                                 in_tmp[save_cnt++] = num2;
117                         else
118                                 in[cnt++] = num2;
119                         if (out)
120                                 break;
121                 } else {
122                         if (found)
123                                 return -EINVAL;
124                         found = 1;
125                 }
126                 start = ++end;
127         }
128         if (cnt + save_cnt > 8)
129                 return -EINVAL;
130         cnt = 7;
131         while (save_cnt)
132                 in[cnt--] = in_tmp[--save_cnt];
133         return 0;
134 }
135
136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
137                                 char *buf)
138 {
139         if (proto == QETH_PROT_IPV4)
140                 qeth_l3_ipaddr4_to_string(addr, buf);
141         else if (proto == QETH_PROT_IPV6)
142                 qeth_l3_ipaddr6_to_string(addr, buf);
143 }
144
145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
146                                 __u8 *addr)
147 {
148         if (proto == QETH_PROT_IPV4)
149                 return qeth_l3_string_to_ipaddr4(buf, addr);
150         else if (proto == QETH_PROT_IPV6)
151                 return qeth_l3_string_to_ipaddr6(buf, addr);
152         else
153                 return -EINVAL;
154 }
155
156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
157 {
158         int i, j;
159         u8 octet;
160
161         for (i = 0; i < len; ++i) {
162                 octet = addr[i];
163                 for (j = 7; j >= 0; --j) {
164                         bits[i*8 + j] = octet & 1;
165                         octet >>= 1;
166                 }
167         }
168 }
169
170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
171                                                 struct qeth_ipaddr *addr)
172 {
173         struct qeth_ipato_entry *ipatoe;
174         u8 addr_bits[128] = {0, };
175         u8 ipatoe_bits[128] = {0, };
176         int rc = 0;
177
178         if (!card->ipato.enabled)
179                 return 0;
180
181         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
182                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
183         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
184                 if (addr->proto != ipatoe->proto)
185                         continue;
186                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
187                                           (ipatoe->proto == QETH_PROT_IPV4) ?
188                                           4 : 16);
189                 if (addr->proto == QETH_PROT_IPV4)
190                         rc = !memcmp(addr_bits, ipatoe_bits,
191                                      min(32, ipatoe->mask_bits));
192                 else
193                         rc = !memcmp(addr_bits, ipatoe_bits,
194                                      min(128, ipatoe->mask_bits));
195                 if (rc)
196                         break;
197         }
198         /* invert? */
199         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
200                 rc = !rc;
201         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
202                 rc = !rc;
203
204         return rc;
205 }
206
207 /*
208  * Add IP to be added to todo list. If there is already an "add todo"
209  * in this list we just incremenent the reference count.
210  * Returns 0 if we  just incremented reference count.
211  */
212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
213                                         struct qeth_ipaddr *addr, int add)
214 {
215         struct qeth_ipaddr *tmp, *t;
216         int found = 0;
217
218         if (card->options.sniffer)
219                 return 0;
220         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
221                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
222                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
223                         return 0;
224                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
225                     (addr->proto       == QETH_PROT_IPV4)     &&
226                     (tmp->type         == addr->type)         &&
227                     (tmp->is_multicast == addr->is_multicast) &&
228                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
229                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
230                         found = 1;
231                         break;
232                 }
233                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
234                     (addr->proto       == QETH_PROT_IPV6)      &&
235                     (tmp->type         == addr->type)          &&
236                     (tmp->is_multicast == addr->is_multicast)  &&
237                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
238                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
239                             sizeof(struct in6_addr)) == 0)) {
240                         found = 1;
241                         break;
242                 }
243         }
244         if (found) {
245                 if (addr->users != 0)
246                         tmp->users += addr->users;
247                 else
248                         tmp->users += add ? 1 : -1;
249                 if (tmp->users == 0) {
250                         list_del(&tmp->entry);
251                         kfree(tmp);
252                 }
253                 return 0;
254         } else {
255                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
256                         list_add(&addr->entry, card->ip_tbd_list);
257                 else {
258                         if (addr->users == 0)
259                                 addr->users += add ? 1 : -1;
260                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
261                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
262                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
263                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
264                         }
265                         list_add_tail(&addr->entry, card->ip_tbd_list);
266                 }
267                 return 1;
268         }
269 }
270
271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
272 {
273         unsigned long flags;
274         int rc = 0;
275
276         QETH_CARD_TEXT(card, 4, "delip");
277
278         if (addr->proto == QETH_PROT_IPV4)
279                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
280         else {
281                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
282                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
283         }
284         spin_lock_irqsave(&card->ip_lock, flags);
285         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
286         spin_unlock_irqrestore(&card->ip_lock, flags);
287         return rc;
288 }
289
290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
291 {
292         unsigned long flags;
293         int rc = 0;
294
295         QETH_CARD_TEXT(card, 4, "addip");
296         if (addr->proto == QETH_PROT_IPV4)
297                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
298         else {
299                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
300                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
301         }
302         spin_lock_irqsave(&card->ip_lock, flags);
303         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
304         spin_unlock_irqrestore(&card->ip_lock, flags);
305         return rc;
306 }
307
308
309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
310                                 enum qeth_prot_versions prot)
311 {
312         struct qeth_ipaddr *addr;
313
314         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
315         if (addr == NULL) {
316                 return NULL;
317         }
318         addr->type = QETH_IP_TYPE_NORMAL;
319         addr->proto = prot;
320         return addr;
321 }
322
323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
324 {
325         struct qeth_ipaddr *iptodo;
326         unsigned long flags;
327
328         QETH_CARD_TEXT(card, 4, "delmc");
329         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
330         if (!iptodo) {
331                 QETH_CARD_TEXT(card, 2, "dmcnomem");
332                 return;
333         }
334         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
335         spin_lock_irqsave(&card->ip_lock, flags);
336         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
337                 kfree(iptodo);
338         spin_unlock_irqrestore(&card->ip_lock, flags);
339 }
340
341 /*
342  * Add/remove address to/from card's ip list, i.e. try to add or remove
343  * reference to/from an IP address that is already registered on the card.
344  * Returns:
345  *      0  address was on card and its reference count has been adjusted,
346  *         but is still > 0, so nothing has to be done
347  *         also returns 0 if card was not on card and the todo was to delete
348  *         the address -> there is also nothing to be done
349  *      1  address was not on card and the todo is to add it to the card's ip
350  *         list
351  *      -1 address was on card and its reference count has been decremented
352  *         to <= 0 by the todo -> address must be removed from card
353  */
354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
355                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
356 {
357         struct qeth_ipaddr *addr;
358         int found = 0;
359
360         list_for_each_entry(addr, &card->ip_list, entry) {
361                 if ((addr->proto == QETH_PROT_IPV4) &&
362                     (todo->proto == QETH_PROT_IPV4) &&
363                     (addr->type == todo->type) &&
364                     (addr->u.a4.addr == todo->u.a4.addr) &&
365                     (addr->u.a4.mask == todo->u.a4.mask)) {
366                         found = 1;
367                         break;
368                 }
369                 if ((addr->proto == QETH_PROT_IPV6) &&
370                     (todo->proto == QETH_PROT_IPV6) &&
371                     (addr->type == todo->type) &&
372                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
373                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
374                             sizeof(struct in6_addr)) == 0)) {
375                         found = 1;
376                         break;
377                 }
378         }
379         if (found) {
380                 addr->users += todo->users;
381                 if (addr->users <= 0) {
382                         *__addr = addr;
383                         return -1;
384                 } else {
385                         /* for VIPA and RXIP limit refcount to 1 */
386                         if (addr->type != QETH_IP_TYPE_NORMAL)
387                                 addr->users = 1;
388                         return 0;
389                 }
390         }
391         if (todo->users > 0) {
392                 /* for VIPA and RXIP limit refcount to 1 */
393                 if (todo->type != QETH_IP_TYPE_NORMAL)
394                         todo->users = 1;
395                 return 1;
396         } else
397                 return 0;
398 }
399
400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
401                                         unsigned long *flags)
402 {
403         struct list_head fail_list;
404         struct qeth_ipaddr *addr, *tmp;
405         int rc;
406
407         INIT_LIST_HEAD(&fail_list);
408 again:
409         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
410                 if (addr->is_multicast) {
411                         list_del(&addr->entry);
412                         spin_unlock_irqrestore(&card->ip_lock, *flags);
413                         rc = qeth_l3_deregister_addr_entry(card, addr);
414                         spin_lock_irqsave(&card->ip_lock, *flags);
415                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
416                                 kfree(addr);
417                         else
418                                 list_add_tail(&addr->entry, &fail_list);
419                         goto again;
420                 }
421         }
422         list_splice(&fail_list, &card->ip_list);
423 }
424
425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
426 {
427         struct list_head *tbd_list;
428         struct qeth_ipaddr *todo, *addr;
429         unsigned long flags;
430         int rc;
431
432         QETH_CARD_TEXT(card, 2, "sdiplist");
433         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
434
435         if ((card->state != CARD_STATE_UP &&
436              card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
437                 return;
438         }
439
440         spin_lock_irqsave(&card->ip_lock, flags);
441         tbd_list = card->ip_tbd_list;
442         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
443         if (!card->ip_tbd_list) {
444                 QETH_CARD_TEXT(card, 0, "silnomem");
445                 card->ip_tbd_list = tbd_list;
446                 spin_unlock_irqrestore(&card->ip_lock, flags);
447                 return;
448         } else
449                 INIT_LIST_HEAD(card->ip_tbd_list);
450
451         while (!list_empty(tbd_list)) {
452                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
453                 list_del(&todo->entry);
454                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
455                         __qeth_l3_delete_all_mc(card, &flags);
456                         kfree(todo);
457                         continue;
458                 }
459                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
460                 if (rc == 0) {
461                         /* nothing to be done; only adjusted refcount */
462                         kfree(todo);
463                 } else if (rc == 1) {
464                         /* new entry to be added to on-card list */
465                         spin_unlock_irqrestore(&card->ip_lock, flags);
466                         rc = qeth_l3_register_addr_entry(card, todo);
467                         spin_lock_irqsave(&card->ip_lock, flags);
468                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
469                                 list_add_tail(&todo->entry, &card->ip_list);
470                         else
471                                 kfree(todo);
472                 } else if (rc == -1) {
473                         /* on-card entry to be removed */
474                         list_del_init(&addr->entry);
475                         spin_unlock_irqrestore(&card->ip_lock, flags);
476                         rc = qeth_l3_deregister_addr_entry(card, addr);
477                         spin_lock_irqsave(&card->ip_lock, flags);
478                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
479                                 kfree(addr);
480                         else
481                                 list_add_tail(&addr->entry, &card->ip_list);
482                         kfree(todo);
483                 }
484         }
485         spin_unlock_irqrestore(&card->ip_lock, flags);
486         kfree(tbd_list);
487 }
488
489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
490 {
491         struct qeth_ipaddr *addr, *tmp;
492         unsigned long flags;
493
494         QETH_CARD_TEXT(card, 4, "clearip");
495         if (recover && card->options.sniffer)
496                 return;
497         spin_lock_irqsave(&card->ip_lock, flags);
498         /* clear todo list */
499         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
500                 list_del(&addr->entry);
501                 kfree(addr);
502         }
503
504         while (!list_empty(&card->ip_list)) {
505                 addr = list_entry(card->ip_list.next,
506                                   struct qeth_ipaddr, entry);
507                 list_del_init(&addr->entry);
508                 if (!recover || addr->is_multicast) {
509                         kfree(addr);
510                         continue;
511                 }
512                 list_add_tail(&addr->entry, card->ip_tbd_list);
513         }
514         spin_unlock_irqrestore(&card->ip_lock, flags);
515 }
516
517 static int qeth_l3_address_exists_in_list(struct list_head *list,
518                 struct qeth_ipaddr *addr, int same_type)
519 {
520         struct qeth_ipaddr *tmp;
521
522         list_for_each_entry(tmp, list, entry) {
523                 if ((tmp->proto == QETH_PROT_IPV4) &&
524                     (addr->proto == QETH_PROT_IPV4) &&
525                     ((same_type && (tmp->type == addr->type)) ||
526                     (!same_type && (tmp->type != addr->type))) &&
527                     (tmp->u.a4.addr == addr->u.a4.addr))
528                         return 1;
529
530                 if ((tmp->proto == QETH_PROT_IPV6) &&
531                     (addr->proto == QETH_PROT_IPV6) &&
532                     ((same_type && (tmp->type == addr->type)) ||
533                     (!same_type && (tmp->type != addr->type))) &&
534                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
535                             sizeof(struct in6_addr)) == 0))
536                         return 1;
537
538         }
539         return 0;
540 }
541
542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
543                         struct qeth_ipaddr *addr, int ipacmd)
544 {
545         int rc;
546         struct qeth_cmd_buffer *iob;
547         struct qeth_ipa_cmd *cmd;
548
549         QETH_CARD_TEXT(card, 4, "setdelmc");
550
551         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
552         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
553         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
554         if (addr->proto == QETH_PROT_IPV6)
555                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
556                        sizeof(struct in6_addr));
557         else
558                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
559
560         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
561
562         return rc;
563 }
564
565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
566 {
567         int i, j;
568         for (i = 0; i < 16; i++) {
569                 j = (len) - (i * 8);
570                 if (j >= 8)
571                         netmask[i] = 0xff;
572                 else if (j > 0)
573                         netmask[i] = (u8)(0xFF00 >> j);
574                 else
575                         netmask[i] = 0;
576         }
577 }
578
579 static int qeth_l3_send_setdelip(struct qeth_card *card,
580                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
581 {
582         int rc;
583         struct qeth_cmd_buffer *iob;
584         struct qeth_ipa_cmd *cmd;
585         __u8 netmask[16];
586
587         QETH_CARD_TEXT(card, 4, "setdelip");
588         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
589
590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
591         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
592         if (addr->proto == QETH_PROT_IPV6) {
593                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
594                        sizeof(struct in6_addr));
595                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
596                 memcpy(cmd->data.setdelip6.mask, netmask,
597                        sizeof(struct in6_addr));
598                 cmd->data.setdelip6.flags = flags;
599         } else {
600                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
601                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
602                 cmd->data.setdelip4.flags = flags;
603         }
604
605         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
606
607         return rc;
608 }
609
610 static int qeth_l3_send_setrouting(struct qeth_card *card,
611         enum qeth_routing_types type, enum qeth_prot_versions prot)
612 {
613         int rc;
614         struct qeth_ipa_cmd *cmd;
615         struct qeth_cmd_buffer *iob;
616
617         QETH_CARD_TEXT(card, 4, "setroutg");
618         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
619         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
620         cmd->data.setrtg.type = (type);
621         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
622
623         return rc;
624 }
625
626 static void qeth_l3_correct_routing_type(struct qeth_card *card,
627                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
628 {
629         if (card->info.type == QETH_CARD_TYPE_IQD) {
630                 switch (*type) {
631                 case NO_ROUTER:
632                 case PRIMARY_CONNECTOR:
633                 case SECONDARY_CONNECTOR:
634                 case MULTICAST_ROUTER:
635                         return;
636                 default:
637                         goto out_inval;
638                 }
639         } else {
640                 switch (*type) {
641                 case NO_ROUTER:
642                 case PRIMARY_ROUTER:
643                 case SECONDARY_ROUTER:
644                         return;
645                 case MULTICAST_ROUTER:
646                         if (qeth_is_ipafunc_supported(card, prot,
647                                                       IPA_OSA_MC_ROUTER))
648                                 return;
649                 default:
650                         goto out_inval;
651                 }
652         }
653 out_inval:
654         *type = NO_ROUTER;
655 }
656
657 int qeth_l3_setrouting_v4(struct qeth_card *card)
658 {
659         int rc;
660
661         QETH_CARD_TEXT(card, 3, "setrtg4");
662
663         qeth_l3_correct_routing_type(card, &card->options.route4.type,
664                                   QETH_PROT_IPV4);
665
666         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
667                                   QETH_PROT_IPV4);
668         if (rc) {
669                 card->options.route4.type = NO_ROUTER;
670                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
671                         " on %s. Type set to 'no router'.\n", rc,
672                         QETH_CARD_IFNAME(card));
673         }
674         return rc;
675 }
676
677 int qeth_l3_setrouting_v6(struct qeth_card *card)
678 {
679         int rc = 0;
680
681         QETH_CARD_TEXT(card, 3, "setrtg6");
682 #ifdef CONFIG_QETH_IPV6
683
684         if (!qeth_is_supported(card, IPA_IPV6))
685                 return 0;
686         qeth_l3_correct_routing_type(card, &card->options.route6.type,
687                                   QETH_PROT_IPV6);
688
689         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
690                                   QETH_PROT_IPV6);
691         if (rc) {
692                 card->options.route6.type = NO_ROUTER;
693                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
694                         " on %s. Type set to 'no router'.\n", rc,
695                         QETH_CARD_IFNAME(card));
696         }
697 #endif
698         return rc;
699 }
700
701 /*
702  * IP address takeover related functions
703  */
704 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
705 {
706
707         struct qeth_ipato_entry *ipatoe, *tmp;
708         unsigned long flags;
709
710         spin_lock_irqsave(&card->ip_lock, flags);
711         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
712                 list_del(&ipatoe->entry);
713                 kfree(ipatoe);
714         }
715         spin_unlock_irqrestore(&card->ip_lock, flags);
716 }
717
718 int qeth_l3_add_ipato_entry(struct qeth_card *card,
719                                 struct qeth_ipato_entry *new)
720 {
721         struct qeth_ipato_entry *ipatoe;
722         unsigned long flags;
723         int rc = 0;
724
725         QETH_CARD_TEXT(card, 2, "addipato");
726         spin_lock_irqsave(&card->ip_lock, flags);
727         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
728                 if (ipatoe->proto != new->proto)
729                         continue;
730                 if (!memcmp(ipatoe->addr, new->addr,
731                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
732                     (ipatoe->mask_bits == new->mask_bits)) {
733                         rc = -EEXIST;
734                         break;
735                 }
736         }
737         if (!rc)
738                 list_add_tail(&new->entry, &card->ipato.entries);
739
740         spin_unlock_irqrestore(&card->ip_lock, flags);
741         return rc;
742 }
743
744 void qeth_l3_del_ipato_entry(struct qeth_card *card,
745                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
746 {
747         struct qeth_ipato_entry *ipatoe, *tmp;
748         unsigned long flags;
749
750         QETH_CARD_TEXT(card, 2, "delipato");
751         spin_lock_irqsave(&card->ip_lock, flags);
752         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
753                 if (ipatoe->proto != proto)
754                         continue;
755                 if (!memcmp(ipatoe->addr, addr,
756                             (proto == QETH_PROT_IPV4)? 4:16) &&
757                     (ipatoe->mask_bits == mask_bits)) {
758                         list_del(&ipatoe->entry);
759                         kfree(ipatoe);
760                 }
761         }
762         spin_unlock_irqrestore(&card->ip_lock, flags);
763 }
764
765 /*
766  * VIPA related functions
767  */
768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
769               const u8 *addr)
770 {
771         struct qeth_ipaddr *ipaddr;
772         unsigned long flags;
773         int rc = 0;
774
775         ipaddr = qeth_l3_get_addr_buffer(proto);
776         if (ipaddr) {
777                 if (proto == QETH_PROT_IPV4) {
778                         QETH_CARD_TEXT(card, 2, "addvipa4");
779                         memcpy(&ipaddr->u.a4.addr, addr, 4);
780                         ipaddr->u.a4.mask = 0;
781                 } else if (proto == QETH_PROT_IPV6) {
782                         QETH_CARD_TEXT(card, 2, "addvipa6");
783                         memcpy(&ipaddr->u.a6.addr, addr, 16);
784                         ipaddr->u.a6.pfxlen = 0;
785                 }
786                 ipaddr->type = QETH_IP_TYPE_VIPA;
787                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
788                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
789         } else
790                 return -ENOMEM;
791         spin_lock_irqsave(&card->ip_lock, flags);
792         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
793             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
794                 rc = -EEXIST;
795         spin_unlock_irqrestore(&card->ip_lock, flags);
796         if (rc) {
797                 return rc;
798         }
799         if (!qeth_l3_add_ip(card, ipaddr))
800                 kfree(ipaddr);
801         qeth_l3_set_ip_addr_list(card);
802         return rc;
803 }
804
805 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
806               const u8 *addr)
807 {
808         struct qeth_ipaddr *ipaddr;
809
810         ipaddr = qeth_l3_get_addr_buffer(proto);
811         if (ipaddr) {
812                 if (proto == QETH_PROT_IPV4) {
813                         QETH_CARD_TEXT(card, 2, "delvipa4");
814                         memcpy(&ipaddr->u.a4.addr, addr, 4);
815                         ipaddr->u.a4.mask = 0;
816                 } else if (proto == QETH_PROT_IPV6) {
817                         QETH_CARD_TEXT(card, 2, "delvipa6");
818                         memcpy(&ipaddr->u.a6.addr, addr, 16);
819                         ipaddr->u.a6.pfxlen = 0;
820                 }
821                 ipaddr->type = QETH_IP_TYPE_VIPA;
822         } else
823                 return;
824         if (!qeth_l3_delete_ip(card, ipaddr))
825                 kfree(ipaddr);
826         qeth_l3_set_ip_addr_list(card);
827 }
828
829 /*
830  * proxy ARP related functions
831  */
832 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
833               const u8 *addr)
834 {
835         struct qeth_ipaddr *ipaddr;
836         unsigned long flags;
837         int rc = 0;
838
839         ipaddr = qeth_l3_get_addr_buffer(proto);
840         if (ipaddr) {
841                 if (proto == QETH_PROT_IPV4) {
842                         QETH_CARD_TEXT(card, 2, "addrxip4");
843                         memcpy(&ipaddr->u.a4.addr, addr, 4);
844                         ipaddr->u.a4.mask = 0;
845                 } else if (proto == QETH_PROT_IPV6) {
846                         QETH_CARD_TEXT(card, 2, "addrxip6");
847                         memcpy(&ipaddr->u.a6.addr, addr, 16);
848                         ipaddr->u.a6.pfxlen = 0;
849                 }
850                 ipaddr->type = QETH_IP_TYPE_RXIP;
851                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
852                 ipaddr->del_flags = 0;
853         } else
854                 return -ENOMEM;
855         spin_lock_irqsave(&card->ip_lock, flags);
856         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
857             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
858                 rc = -EEXIST;
859         spin_unlock_irqrestore(&card->ip_lock, flags);
860         if (rc) {
861                 return rc;
862         }
863         if (!qeth_l3_add_ip(card, ipaddr))
864                 kfree(ipaddr);
865         qeth_l3_set_ip_addr_list(card);
866         return 0;
867 }
868
869 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
870                         const u8 *addr)
871 {
872         struct qeth_ipaddr *ipaddr;
873
874         ipaddr = qeth_l3_get_addr_buffer(proto);
875         if (ipaddr) {
876                 if (proto == QETH_PROT_IPV4) {
877                         QETH_CARD_TEXT(card, 2, "addrxip4");
878                         memcpy(&ipaddr->u.a4.addr, addr, 4);
879                         ipaddr->u.a4.mask = 0;
880                 } else if (proto == QETH_PROT_IPV6) {
881                         QETH_CARD_TEXT(card, 2, "addrxip6");
882                         memcpy(&ipaddr->u.a6.addr, addr, 16);
883                         ipaddr->u.a6.pfxlen = 0;
884                 }
885                 ipaddr->type = QETH_IP_TYPE_RXIP;
886         } else
887                 return;
888         if (!qeth_l3_delete_ip(card, ipaddr))
889                 kfree(ipaddr);
890         qeth_l3_set_ip_addr_list(card);
891 }
892
893 static int qeth_l3_register_addr_entry(struct qeth_card *card,
894                                 struct qeth_ipaddr *addr)
895 {
896         char buf[50];
897         int rc = 0;
898         int cnt = 3;
899
900         if (addr->proto == QETH_PROT_IPV4) {
901                 QETH_CARD_TEXT(card, 2, "setaddr4");
902                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
903         } else if (addr->proto == QETH_PROT_IPV6) {
904                 QETH_CARD_TEXT(card, 2, "setaddr6");
905                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
906                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
907         } else {
908                 QETH_CARD_TEXT(card, 2, "setaddr?");
909                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
910         }
911         do {
912                 if (addr->is_multicast)
913                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
914                 else
915                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
916                                         addr->set_flags);
917                 if (rc)
918                         QETH_CARD_TEXT(card, 2, "failed");
919         } while ((--cnt > 0) && rc);
920         if (rc) {
921                 QETH_CARD_TEXT(card, 2, "FAILED");
922                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
923                 dev_warn(&card->gdev->dev,
924                         "Registering IP address %s failed\n", buf);
925         }
926         return rc;
927 }
928
929 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
930                                                 struct qeth_ipaddr *addr)
931 {
932         int rc = 0;
933
934         if (addr->proto == QETH_PROT_IPV4) {
935                 QETH_CARD_TEXT(card, 2, "deladdr4");
936                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
937         } else if (addr->proto == QETH_PROT_IPV6) {
938                 QETH_CARD_TEXT(card, 2, "deladdr6");
939                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
940                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
941         } else {
942                 QETH_CARD_TEXT(card, 2, "deladdr?");
943                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
944         }
945         if (addr->is_multicast)
946                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
947         else
948                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
949                                         addr->del_flags);
950         if (rc)
951                 QETH_CARD_TEXT(card, 2, "failed");
952
953         return rc;
954 }
955
956 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
957 {
958         if (cast_type == RTN_MULTICAST)
959                 return QETH_CAST_MULTICAST;
960         if (cast_type == RTN_BROADCAST)
961                 return QETH_CAST_BROADCAST;
962         return QETH_CAST_UNICAST;
963 }
964
965 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
966 {
967         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
968         if (cast_type == RTN_MULTICAST)
969                 return ct | QETH_CAST_MULTICAST;
970         if (cast_type == RTN_ANYCAST)
971                 return ct | QETH_CAST_ANYCAST;
972         if (cast_type == RTN_BROADCAST)
973                 return ct | QETH_CAST_BROADCAST;
974         return ct | QETH_CAST_UNICAST;
975 }
976
977 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
978                                         __u32 mode)
979 {
980         int rc;
981         struct qeth_cmd_buffer *iob;
982         struct qeth_ipa_cmd *cmd;
983
984         QETH_CARD_TEXT(card, 4, "adpmode");
985
986         iob = qeth_get_adapter_cmd(card, command,
987                                    sizeof(struct qeth_ipacmd_setadpparms));
988         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
989         cmd->data.setadapterparms.data.mode = mode;
990         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
991                                NULL);
992         return rc;
993 }
994
995 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
996 {
997         int rc;
998
999         QETH_CARD_TEXT(card, 4, "adphstr");
1000
1001         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1002                 rc = qeth_l3_send_setadp_mode(card,
1003                                         IPA_SETADP_SET_BROADCAST_MODE,
1004                                         card->options.broadcast_mode);
1005                 if (rc)
1006                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1007                                    "device %s: x%x\n",
1008                                    CARD_BUS_ID(card), rc);
1009                 rc = qeth_l3_send_setadp_mode(card,
1010                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1011                                         card->options.macaddr_mode);
1012                 if (rc)
1013                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1014                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1015                 return rc;
1016         }
1017         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1018                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1019                            "to set broadcast mode, using ALLRINGS "
1020                            "on device %s:\n", CARD_BUS_ID(card));
1021         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1022                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1023                            "to set macaddr mode, using NONCANONICAL "
1024                            "on device %s:\n", CARD_BUS_ID(card));
1025         return 0;
1026 }
1027
1028 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1029 {
1030         int rc;
1031
1032         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1033
1034         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1035                 dev_info(&card->gdev->dev,
1036                         "set adapter parameters not supported.\n");
1037                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1038                 return 0;
1039         }
1040         rc = qeth_query_setadapterparms(card);
1041         if (rc) {
1042                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1043                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1044                 return rc;
1045         }
1046         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1047                 rc = qeth_setadpparms_change_macaddr(card);
1048                 if (rc)
1049                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1050                                 " address failed\n");
1051         }
1052
1053         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1054             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1055                 rc = qeth_l3_setadapter_hstr(card);
1056
1057         return rc;
1058 }
1059
1060 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1061                         struct qeth_reply *reply, unsigned long data)
1062 {
1063         struct qeth_ipa_cmd *cmd;
1064
1065         QETH_CARD_TEXT(card, 4, "defadpcb");
1066
1067         cmd = (struct qeth_ipa_cmd *) data;
1068         if (cmd->hdr.return_code == 0) {
1069                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1070                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1071                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1072                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1073                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1074         }
1075         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1076             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1077                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1078                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1079         }
1080         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1081             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1082                 card->info.tx_csum_mask =
1083                         cmd->data.setassparms.data.flags_32bit;
1084                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1085         }
1086
1087         return 0;
1088 }
1089
1090 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1091         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1092         __u16 len, enum qeth_prot_versions prot)
1093 {
1094         struct qeth_cmd_buffer *iob;
1095         struct qeth_ipa_cmd *cmd;
1096
1097         QETH_CARD_TEXT(card, 4, "getasscm");
1098         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1099
1100         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1101         cmd->data.setassparms.hdr.assist_no = ipa_func;
1102         cmd->data.setassparms.hdr.length = 8 + len;
1103         cmd->data.setassparms.hdr.command_code = cmd_code;
1104         cmd->data.setassparms.hdr.return_code = 0;
1105         cmd->data.setassparms.hdr.seq_no = 0;
1106
1107         return iob;
1108 }
1109
1110 static int qeth_l3_send_setassparms(struct qeth_card *card,
1111         struct qeth_cmd_buffer *iob, __u16 len, long data,
1112         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1113                 unsigned long),
1114         void *reply_param)
1115 {
1116         int rc;
1117         struct qeth_ipa_cmd *cmd;
1118
1119         QETH_CARD_TEXT(card, 4, "sendassp");
1120
1121         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1122         if (len <= sizeof(__u32))
1123                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1124         else   /* (len > sizeof(__u32)) */
1125                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1126
1127         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1128         return rc;
1129 }
1130
1131 #ifdef CONFIG_QETH_IPV6
1132 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1133                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1134 {
1135         int rc;
1136         struct qeth_cmd_buffer *iob;
1137
1138         QETH_CARD_TEXT(card, 4, "simassp6");
1139         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1140                                        0, QETH_PROT_IPV6);
1141         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1142                                    qeth_l3_default_setassparms_cb, NULL);
1143         return rc;
1144 }
1145 #endif
1146
1147 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1148                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1149 {
1150         int rc;
1151         int length = 0;
1152         struct qeth_cmd_buffer *iob;
1153
1154         QETH_CARD_TEXT(card, 4, "simassp4");
1155         if (data)
1156                 length = sizeof(__u32);
1157         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1158                                        length, QETH_PROT_IPV4);
1159         rc = qeth_l3_send_setassparms(card, iob, length, data,
1160                                    qeth_l3_default_setassparms_cb, NULL);
1161         return rc;
1162 }
1163
1164 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1165 {
1166         int rc;
1167
1168         QETH_CARD_TEXT(card, 3, "ipaarp");
1169
1170         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1171                 dev_info(&card->gdev->dev,
1172                         "ARP processing not supported on %s!\n",
1173                         QETH_CARD_IFNAME(card));
1174                 return 0;
1175         }
1176         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1177                                         IPA_CMD_ASS_START, 0);
1178         if (rc) {
1179                 dev_warn(&card->gdev->dev,
1180                         "Starting ARP processing support for %s failed\n",
1181                         QETH_CARD_IFNAME(card));
1182         }
1183         return rc;
1184 }
1185
1186 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1187 {
1188         int rc;
1189
1190         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1191
1192         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1193                 dev_info(&card->gdev->dev,
1194                         "Hardware IP fragmentation not supported on %s\n",
1195                         QETH_CARD_IFNAME(card));
1196                 return  -EOPNOTSUPP;
1197         }
1198
1199         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1200                                           IPA_CMD_ASS_START, 0);
1201         if (rc) {
1202                 dev_warn(&card->gdev->dev,
1203                         "Starting IP fragmentation support for %s failed\n",
1204                         QETH_CARD_IFNAME(card));
1205         } else
1206                 dev_info(&card->gdev->dev,
1207                         "Hardware IP fragmentation enabled \n");
1208         return rc;
1209 }
1210
1211 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1212 {
1213         int rc;
1214
1215         QETH_CARD_TEXT(card, 3, "stsrcmac");
1216
1217         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1218                 dev_info(&card->gdev->dev,
1219                         "Inbound source MAC-address not supported on %s\n",
1220                         QETH_CARD_IFNAME(card));
1221                 return -EOPNOTSUPP;
1222         }
1223
1224         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1225                                           IPA_CMD_ASS_START, 0);
1226         if (rc)
1227                 dev_warn(&card->gdev->dev,
1228                         "Starting source MAC-address support for %s failed\n",
1229                         QETH_CARD_IFNAME(card));
1230         return rc;
1231 }
1232
1233 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1234 {
1235         int rc = 0;
1236
1237         QETH_CARD_TEXT(card, 3, "strtvlan");
1238
1239         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1240                 dev_info(&card->gdev->dev,
1241                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1242                 return -EOPNOTSUPP;
1243         }
1244
1245         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1246                                           IPA_CMD_ASS_START, 0);
1247         if (rc) {
1248                 dev_warn(&card->gdev->dev,
1249                         "Starting VLAN support for %s failed\n",
1250                         QETH_CARD_IFNAME(card));
1251         } else {
1252                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1253         }
1254         return rc;
1255 }
1256
1257 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1258 {
1259         int rc;
1260
1261         QETH_CARD_TEXT(card, 3, "stmcast");
1262
1263         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1264                 dev_info(&card->gdev->dev,
1265                         "Multicast not supported on %s\n",
1266                         QETH_CARD_IFNAME(card));
1267                 return -EOPNOTSUPP;
1268         }
1269
1270         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1271                                           IPA_CMD_ASS_START, 0);
1272         if (rc) {
1273                 dev_warn(&card->gdev->dev,
1274                         "Starting multicast support for %s failed\n",
1275                         QETH_CARD_IFNAME(card));
1276         } else {
1277                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1278                 card->dev->flags |= IFF_MULTICAST;
1279         }
1280         return rc;
1281 }
1282
1283 #ifdef CONFIG_QETH_IPV6
1284 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1285 {
1286         int rc;
1287
1288         QETH_CARD_TEXT(card, 3, "softipv6");
1289
1290         if (card->info.type == QETH_CARD_TYPE_IQD)
1291                 goto out;
1292
1293         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1294         if (rc) {
1295                 dev_err(&card->gdev->dev,
1296                         "Activating IPv6 support for %s failed\n",
1297                         QETH_CARD_IFNAME(card));
1298                 return rc;
1299         }
1300         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1301                                           IPA_CMD_ASS_START, 3);
1302         if (rc) {
1303                 dev_err(&card->gdev->dev,
1304                         "Activating IPv6 support for %s failed\n",
1305                         QETH_CARD_IFNAME(card));
1306                 return rc;
1307         }
1308         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1309                                                IPA_CMD_ASS_START);
1310         if (rc) {
1311                 dev_err(&card->gdev->dev,
1312                         "Activating IPv6 support for %s failed\n",
1313                          QETH_CARD_IFNAME(card));
1314                 return rc;
1315         }
1316         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1317                                                IPA_CMD_ASS_START);
1318         if (rc) {
1319                 dev_warn(&card->gdev->dev,
1320                         "Enabling the passthrough mode for %s failed\n",
1321                         QETH_CARD_IFNAME(card));
1322                 return rc;
1323         }
1324 out:
1325         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1326         return 0;
1327 }
1328 #endif
1329
1330 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1331 {
1332         int rc = 0;
1333
1334         QETH_CARD_TEXT(card, 3, "strtipv6");
1335
1336         if (!qeth_is_supported(card, IPA_IPV6)) {
1337                 dev_info(&card->gdev->dev,
1338                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1339                 return 0;
1340         }
1341 #ifdef CONFIG_QETH_IPV6
1342         rc = qeth_l3_softsetup_ipv6(card);
1343 #endif
1344         return rc ;
1345 }
1346
1347 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1348 {
1349         int rc;
1350
1351         QETH_CARD_TEXT(card, 3, "stbrdcst");
1352         card->info.broadcast_capable = 0;
1353         if (!qeth_is_supported(card, IPA_FILTERING)) {
1354                 dev_info(&card->gdev->dev,
1355                         "Broadcast not supported on %s\n",
1356                         QETH_CARD_IFNAME(card));
1357                 rc = -EOPNOTSUPP;
1358                 goto out;
1359         }
1360         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1361                                           IPA_CMD_ASS_START, 0);
1362         if (rc) {
1363                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1364                         "%s failed\n", QETH_CARD_IFNAME(card));
1365                 goto out;
1366         }
1367
1368         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1369                                           IPA_CMD_ASS_CONFIGURE, 1);
1370         if (rc) {
1371                 dev_warn(&card->gdev->dev,
1372                         "Setting up broadcast filtering for %s failed\n",
1373                         QETH_CARD_IFNAME(card));
1374                 goto out;
1375         }
1376         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1377         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1378         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1379                                           IPA_CMD_ASS_ENABLE, 1);
1380         if (rc) {
1381                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1382                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1383                 goto out;
1384         }
1385         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1386 out:
1387         if (card->info.broadcast_capable)
1388                 card->dev->flags |= IFF_BROADCAST;
1389         else
1390                 card->dev->flags &= ~IFF_BROADCAST;
1391         return rc;
1392 }
1393
1394 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1395 {
1396         int rc;
1397
1398         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1399                                           IPA_CMD_ASS_START, 0);
1400         if (rc) {
1401                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1402                         "failed, using SW checksumming\n",
1403                         QETH_CARD_IFNAME(card));
1404                 return rc;
1405         }
1406         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1407                                           IPA_CMD_ASS_ENABLE,
1408                                           card->info.csum_mask);
1409         if (rc) {
1410                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1411                         "failed, using SW checksumming\n",
1412                         QETH_CARD_IFNAME(card));
1413                 return rc;
1414         }
1415         return 0;
1416 }
1417
1418 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1419 {
1420         int rc = 0;
1421
1422         if (on) {
1423                 rc = qeth_l3_send_checksum_command(card);
1424                 if (rc)
1425                         return -EIO;
1426                 dev_info(&card->gdev->dev,
1427                         "HW Checksumming (inbound) enabled\n");
1428         } else {
1429                 rc = qeth_l3_send_simple_setassparms(card,
1430                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1431                 if (rc)
1432                         return -EIO;
1433         }
1434
1435         return 0;
1436 }
1437
1438 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1439 {
1440         QETH_CARD_TEXT(card, 3, "strtcsum");
1441
1442         if (card->dev->features & NETIF_F_RXCSUM) {
1443                 rtnl_lock();
1444                 /* force set_features call */
1445                 card->dev->features &= ~NETIF_F_RXCSUM;
1446                 netdev_update_features(card->dev);
1447                 rtnl_unlock();
1448         }
1449         return 0;
1450 }
1451
1452 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1453 {
1454         int rc = 0;
1455
1456         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1457                 return rc;
1458         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1459                           IPA_CMD_ASS_START, 0);
1460         if (rc)
1461                 goto err_out;
1462         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1463                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1464         if (rc)
1465                 goto err_out;
1466         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1467         return rc;
1468 err_out:
1469         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1470                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1471         return rc;
1472 }
1473
1474 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1475 {
1476         int rc;
1477
1478         QETH_CARD_TEXT(card, 3, "sttso");
1479
1480         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1481                 dev_info(&card->gdev->dev,
1482                         "Outbound TSO not supported on %s\n",
1483                         QETH_CARD_IFNAME(card));
1484                 rc = -EOPNOTSUPP;
1485         } else {
1486                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1487                                                 IPA_CMD_ASS_START, 0);
1488                 if (rc)
1489                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1490                                 "segmentation offload for %s failed\n",
1491                                 QETH_CARD_IFNAME(card));
1492                 else
1493                         dev_info(&card->gdev->dev,
1494                                 "Outbound TSO enabled\n");
1495         }
1496         if (rc)
1497                 card->dev->features &= ~NETIF_F_TSO;
1498         return rc;
1499 }
1500
1501 static int qeth_l3_start_ipassists(struct qeth_card *card)
1502 {
1503         QETH_CARD_TEXT(card, 3, "strtipas");
1504
1505         qeth_set_access_ctrl_online(card);      /* go on*/
1506         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1507         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1508         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1509         qeth_l3_start_ipa_vlan(card);           /* go on*/
1510         qeth_l3_start_ipa_multicast(card);              /* go on*/
1511         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1512         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1513         qeth_l3_start_ipa_checksum(card);               /* go on*/
1514         qeth_l3_start_ipa_tx_checksum(card);
1515         qeth_l3_start_ipa_tso(card);            /* go on*/
1516         return 0;
1517 }
1518
1519 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1520                 struct qeth_reply *reply, unsigned long data)
1521 {
1522         struct qeth_ipa_cmd *cmd;
1523
1524         cmd = (struct qeth_ipa_cmd *) data;
1525         if (cmd->hdr.return_code == 0)
1526                 memcpy(card->dev->dev_addr,
1527                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1528         else
1529                 random_ether_addr(card->dev->dev_addr);
1530
1531         return 0;
1532 }
1533
1534 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1535 {
1536         int rc = 0;
1537         struct qeth_cmd_buffer *iob;
1538         struct qeth_ipa_cmd *cmd;
1539
1540         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1541
1542         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1543                                      QETH_PROT_IPV6);
1544         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1545         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1546                         card->info.unique_id;
1547
1548         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1549                                 NULL);
1550         return rc;
1551 }
1552
1553 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1554                 struct qeth_reply *reply, unsigned long data)
1555 {
1556         struct qeth_ipa_cmd *cmd;
1557
1558         cmd = (struct qeth_ipa_cmd *) data;
1559         if (cmd->hdr.return_code == 0)
1560                 card->info.unique_id = *((__u16 *)
1561                                 &cmd->data.create_destroy_addr.unique_id[6]);
1562         else {
1563                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1564                                         UNIQUE_ID_NOT_BY_CARD;
1565                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1566                         "generate a unique ID\n");
1567         }
1568         return 0;
1569 }
1570
1571 static int qeth_l3_get_unique_id(struct qeth_card *card)
1572 {
1573         int rc = 0;
1574         struct qeth_cmd_buffer *iob;
1575         struct qeth_ipa_cmd *cmd;
1576
1577         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1578
1579         if (!qeth_is_supported(card, IPA_IPV6)) {
1580                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1581                                         UNIQUE_ID_NOT_BY_CARD;
1582                 return 0;
1583         }
1584
1585         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1586                                      QETH_PROT_IPV6);
1587         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1588         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1589                         card->info.unique_id;
1590
1591         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1592         return rc;
1593 }
1594
1595 static int
1596 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1597                             unsigned long data)
1598 {
1599         struct qeth_ipa_cmd        *cmd;
1600         __u16 rc;
1601
1602         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1603
1604         cmd = (struct qeth_ipa_cmd *)data;
1605         rc = cmd->hdr.return_code;
1606         if (rc)
1607                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1608         switch (cmd->data.diagass.action) {
1609         case QETH_DIAGS_CMD_TRACE_QUERY:
1610                 break;
1611         case QETH_DIAGS_CMD_TRACE_DISABLE:
1612                 switch (rc) {
1613                 case 0:
1614                 case IPA_RC_INVALID_SUBCMD:
1615                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1616                         dev_info(&card->gdev->dev, "The HiperSockets network "
1617                                 "traffic analyzer is deactivated\n");
1618                         break;
1619                 default:
1620                         break;
1621                 }
1622                 break;
1623         case QETH_DIAGS_CMD_TRACE_ENABLE:
1624                 switch (rc) {
1625                 case 0:
1626                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1627                         dev_info(&card->gdev->dev, "The HiperSockets network "
1628                                 "traffic analyzer is activated\n");
1629                         break;
1630                 case IPA_RC_HARDWARE_AUTH_ERROR:
1631                         dev_warn(&card->gdev->dev, "The device is not "
1632                                 "authorized to run as a HiperSockets network "
1633                                 "traffic analyzer\n");
1634                         break;
1635                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1636                         dev_warn(&card->gdev->dev, "A HiperSockets "
1637                                 "network traffic analyzer is already "
1638                                 "active in the HiperSockets LAN\n");
1639                         break;
1640                 default:
1641                         break;
1642                 }
1643                 break;
1644         default:
1645                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1646                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1647         }
1648
1649         return 0;
1650 }
1651
1652 static int
1653 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1654 {
1655         struct qeth_cmd_buffer *iob;
1656         struct qeth_ipa_cmd    *cmd;
1657
1658         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1659
1660         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1661         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1662         cmd->data.diagass.subcmd_len = 16;
1663         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1664         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1665         cmd->data.diagass.action = diags_cmd;
1666         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1667 }
1668
1669 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1670                                 struct net_device *dev)
1671 {
1672         if (dev->type == ARPHRD_IEEE802_TR)
1673                 ip_tr_mc_map(ipm, mac);
1674         else
1675                 ip_eth_mc_map(ipm, mac);
1676 }
1677
1678 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1679 {
1680         struct qeth_ipaddr *ipm;
1681         struct ip_mc_list *im4;
1682         char buf[MAX_ADDR_LEN];
1683
1684         QETH_CARD_TEXT(card, 4, "addmc");
1685         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1686              im4 = rcu_dereference(im4->next_rcu)) {
1687                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1688                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1689                 if (!ipm)
1690                         continue;
1691                 ipm->u.a4.addr = im4->multiaddr;
1692                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1693                 ipm->is_multicast = 1;
1694                 if (!qeth_l3_add_ip(card, ipm))
1695                         kfree(ipm);
1696         }
1697 }
1698
1699 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1700 {
1701         struct in_device *in_dev;
1702         u16 vid;
1703
1704         QETH_CARD_TEXT(card, 4, "addmcvl");
1705         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1706                 return;
1707
1708         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1709                 struct net_device *netdev;
1710
1711                 rcu_read_lock();
1712                 netdev = __vlan_find_dev_deep(card->dev, vid);
1713                 rcu_read_unlock();
1714                 if (netdev == NULL ||
1715                     !(netdev->flags & IFF_UP))
1716                         continue;
1717                 in_dev = in_dev_get(netdev);
1718                 if (!in_dev)
1719                         continue;
1720                 rcu_read_lock();
1721                 qeth_l3_add_mc(card, in_dev);
1722                 rcu_read_unlock();
1723                 in_dev_put(in_dev);
1724         }
1725 }
1726
1727 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1728 {
1729         struct in_device *in4_dev;
1730
1731         QETH_CARD_TEXT(card, 4, "chkmcv4");
1732         in4_dev = in_dev_get(card->dev);
1733         if (in4_dev == NULL)
1734                 return;
1735         rcu_read_lock();
1736         qeth_l3_add_mc(card, in4_dev);
1737         qeth_l3_add_vlan_mc(card);
1738         rcu_read_unlock();
1739         in_dev_put(in4_dev);
1740 }
1741
1742 #ifdef CONFIG_QETH_IPV6
1743 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1744 {
1745         struct qeth_ipaddr *ipm;
1746         struct ifmcaddr6 *im6;
1747         char buf[MAX_ADDR_LEN];
1748
1749         QETH_CARD_TEXT(card, 4, "addmc6");
1750         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1751                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1752                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1753                 if (!ipm)
1754                         continue;
1755                 ipm->is_multicast = 1;
1756                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1757                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1758                        sizeof(struct in6_addr));
1759                 if (!qeth_l3_add_ip(card, ipm))
1760                         kfree(ipm);
1761         }
1762 }
1763
1764 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1765 {
1766         struct inet6_dev *in_dev;
1767         u16 vid;
1768
1769         QETH_CARD_TEXT(card, 4, "admc6vl");
1770         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1771                 return;
1772
1773         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1774                 struct net_device *netdev;
1775
1776                 netdev = __vlan_find_dev_deep(card->dev, vid);
1777                 if (netdev == NULL ||
1778                     !(netdev->flags & IFF_UP))
1779                         continue;
1780                 in_dev = in6_dev_get(netdev);
1781                 if (!in_dev)
1782                         continue;
1783                 read_lock_bh(&in_dev->lock);
1784                 qeth_l3_add_mc6(card, in_dev);
1785                 read_unlock_bh(&in_dev->lock);
1786                 in6_dev_put(in_dev);
1787         }
1788 }
1789
1790 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1791 {
1792         struct inet6_dev *in6_dev;
1793
1794         QETH_CARD_TEXT(card, 4, "chkmcv6");
1795         if (!qeth_is_supported(card, IPA_IPV6))
1796                 return ;
1797         in6_dev = in6_dev_get(card->dev);
1798         if (in6_dev == NULL)
1799                 return;
1800         read_lock_bh(&in6_dev->lock);
1801         qeth_l3_add_mc6(card, in6_dev);
1802         qeth_l3_add_vlan_mc6(card);
1803         read_unlock_bh(&in6_dev->lock);
1804         in6_dev_put(in6_dev);
1805 }
1806 #endif /* CONFIG_QETH_IPV6 */
1807
1808 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1809                         unsigned short vid)
1810 {
1811         struct in_device *in_dev;
1812         struct in_ifaddr *ifa;
1813         struct qeth_ipaddr *addr;
1814         struct net_device *netdev;
1815
1816         QETH_CARD_TEXT(card, 4, "frvaddr4");
1817
1818         netdev = __vlan_find_dev_deep(card->dev, vid);
1819         in_dev = in_dev_get(netdev);
1820         if (!in_dev)
1821                 return;
1822         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1823                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1824                 if (addr) {
1825                         addr->u.a4.addr = ifa->ifa_address;
1826                         addr->u.a4.mask = ifa->ifa_mask;
1827                         addr->type = QETH_IP_TYPE_NORMAL;
1828                         if (!qeth_l3_delete_ip(card, addr))
1829                                 kfree(addr);
1830                 }
1831         }
1832         in_dev_put(in_dev);
1833 }
1834
1835 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1836                         unsigned short vid)
1837 {
1838 #ifdef CONFIG_QETH_IPV6
1839         struct inet6_dev *in6_dev;
1840         struct inet6_ifaddr *ifa;
1841         struct qeth_ipaddr *addr;
1842         struct net_device *netdev;
1843
1844         QETH_CARD_TEXT(card, 4, "frvaddr6");
1845
1846         netdev = __vlan_find_dev_deep(card->dev, vid);
1847         in6_dev = in6_dev_get(netdev);
1848         if (!in6_dev)
1849                 return;
1850         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1851                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1852                 if (addr) {
1853                         memcpy(&addr->u.a6.addr, &ifa->addr,
1854                                sizeof(struct in6_addr));
1855                         addr->u.a6.pfxlen = ifa->prefix_len;
1856                         addr->type = QETH_IP_TYPE_NORMAL;
1857                         if (!qeth_l3_delete_ip(card, addr))
1858                                 kfree(addr);
1859                 }
1860         }
1861         in6_dev_put(in6_dev);
1862 #endif /* CONFIG_QETH_IPV6 */
1863 }
1864
1865 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1866                         unsigned short vid)
1867 {
1868         qeth_l3_free_vlan_addresses4(card, vid);
1869         qeth_l3_free_vlan_addresses6(card, vid);
1870 }
1871
1872 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1873 {
1874         struct qeth_card *card = dev->ml_priv;
1875
1876         set_bit(vid, card->active_vlans);
1877         return;
1878 }
1879
1880 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1881 {
1882         struct qeth_card *card = dev->ml_priv;
1883         unsigned long flags;
1884
1885         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1886         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1887                 QETH_CARD_TEXT(card, 3, "kidREC");
1888                 return;
1889         }
1890         spin_lock_irqsave(&card->vlanlock, flags);
1891         /* unregister IP addresses of vlan device */
1892         qeth_l3_free_vlan_addresses(card, vid);
1893         clear_bit(vid, card->active_vlans);
1894         spin_unlock_irqrestore(&card->vlanlock, flags);
1895         qeth_l3_set_multicast_list(card->dev);
1896 }
1897
1898 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1899                         struct sk_buff *skb, struct qeth_hdr *hdr,
1900                         unsigned short *vlan_id)
1901 {
1902         __be16 prot;
1903         struct iphdr *ip_hdr;
1904         unsigned char tg_addr[MAX_ADDR_LEN];
1905         int is_vlan = 0;
1906
1907         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1908                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1909                               ETH_P_IP);
1910                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1911                 case QETH_CAST_MULTICAST:
1912                         switch (prot) {
1913 #ifdef CONFIG_QETH_IPV6
1914                         case __constant_htons(ETH_P_IPV6):
1915                                 ndisc_mc_map((struct in6_addr *)
1916                                      skb->data + 24,
1917                                      tg_addr, card->dev, 0);
1918                                 break;
1919 #endif
1920                         case __constant_htons(ETH_P_IP):
1921                                 ip_hdr = (struct iphdr *)skb->data;
1922                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1923                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1924                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1925                                 break;
1926                         default:
1927                                 memcpy(tg_addr, card->dev->broadcast,
1928                                         card->dev->addr_len);
1929                         }
1930                         card->stats.multicast++;
1931                         skb->pkt_type = PACKET_MULTICAST;
1932                         break;
1933                 case QETH_CAST_BROADCAST:
1934                         memcpy(tg_addr, card->dev->broadcast,
1935                                 card->dev->addr_len);
1936                         card->stats.multicast++;
1937                         skb->pkt_type = PACKET_BROADCAST;
1938                         break;
1939                 case QETH_CAST_UNICAST:
1940                 case QETH_CAST_ANYCAST:
1941                 case QETH_CAST_NOCAST:
1942                 default:
1943                         if (card->options.sniffer)
1944                                 skb->pkt_type = PACKET_OTHERHOST;
1945                         else
1946                                 skb->pkt_type = PACKET_HOST;
1947                         memcpy(tg_addr, card->dev->dev_addr,
1948                                 card->dev->addr_len);
1949                 }
1950                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1951                         card->dev->header_ops->create(skb, card->dev, prot,
1952                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1953                                 card->dev->addr_len);
1954                 else
1955                         card->dev->header_ops->create(skb, card->dev, prot,
1956                                 tg_addr, "FAKELL", card->dev->addr_len);
1957         }
1958
1959 #ifdef CONFIG_TR
1960         if (card->dev->type == ARPHRD_IEEE802_TR)
1961                 skb->protocol = tr_type_trans(skb, card->dev);
1962         else
1963 #endif
1964                 skb->protocol = eth_type_trans(skb, card->dev);
1965
1966         if (hdr->hdr.l3.ext_flags &
1967             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1968                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1969                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1970                 is_vlan = 1;
1971         }
1972
1973         if (card->dev->features & NETIF_F_RXCSUM) {
1974                 if ((hdr->hdr.l3.ext_flags &
1975                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1976                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1977                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1978                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1979                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1980                 else
1981                         skb->ip_summed = CHECKSUM_NONE;
1982         } else
1983                 skb->ip_summed = CHECKSUM_NONE;
1984
1985         return is_vlan;
1986 }
1987
1988 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1989                                 int budget, int *done)
1990 {
1991         int work_done = 0;
1992         struct sk_buff *skb;
1993         struct qeth_hdr *hdr;
1994         __u16 vlan_tag = 0;
1995         int is_vlan;
1996         unsigned int len;
1997         __u16 magic;
1998
1999         *done = 0;
2000         BUG_ON(!budget);
2001         while (budget) {
2002                 skb = qeth_core_get_next_skb(card,
2003                         &card->qdio.in_q->bufs[card->rx.b_index],
2004                         &card->rx.b_element, &card->rx.e_offset, &hdr);
2005                 if (!skb) {
2006                         *done = 1;
2007                         break;
2008                 }
2009                 skb->dev = card->dev;
2010                 switch (hdr->hdr.l3.id) {
2011                 case QETH_HEADER_TYPE_LAYER3:
2012                         magic = *(__u16 *)skb->data;
2013                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2014                             (magic == ETH_P_AF_IUCV)) {
2015                                 skb->protocol = ETH_P_AF_IUCV;
2016                                 skb->pkt_type = PACKET_HOST;
2017                                 skb->mac_header = NET_SKB_PAD;
2018                                 skb->dev = card->dev;
2019                                 len = skb->len;
2020                                 card->dev->header_ops->create(skb, card->dev, 0,
2021                                         card->dev->dev_addr, "FAKELL",
2022                                         card->dev->addr_len);
2023                                 netif_receive_skb(skb);
2024                         } else {
2025                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2026                                                       &vlan_tag);
2027                                 len = skb->len;
2028                                 if (is_vlan && !card->options.sniffer)
2029                                         __vlan_hwaccel_put_tag(skb, vlan_tag);
2030                                 napi_gro_receive(&card->napi, skb);
2031                         }
2032                         break;
2033                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2034                         skb->pkt_type = PACKET_HOST;
2035                         skb->protocol = eth_type_trans(skb, skb->dev);
2036                         len = skb->len;
2037                         netif_receive_skb(skb);
2038                         break;
2039                 default:
2040                         dev_kfree_skb_any(skb);
2041                         QETH_CARD_TEXT(card, 3, "inbunkno");
2042                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2043                         continue;
2044                 }
2045                 work_done++;
2046                 budget--;
2047                 card->stats.rx_packets++;
2048                 card->stats.rx_bytes += len;
2049         }
2050         return work_done;
2051 }
2052
2053 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2054 {
2055         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2056         int work_done = 0;
2057         struct qeth_qdio_buffer *buffer;
2058         int done;
2059         int new_budget = budget;
2060
2061         if (card->options.performance_stats) {
2062                 card->perf_stats.inbound_cnt++;
2063                 card->perf_stats.inbound_start_time = qeth_get_micros();
2064         }
2065
2066         while (1) {
2067                 if (!card->rx.b_count) {
2068                         card->rx.qdio_err = 0;
2069                         card->rx.b_count = qdio_get_next_buffers(
2070                                 card->data.ccwdev, 0, &card->rx.b_index,
2071                                 &card->rx.qdio_err);
2072                         if (card->rx.b_count <= 0) {
2073                                 card->rx.b_count = 0;
2074                                 break;
2075                         }
2076                         card->rx.b_element =
2077                                 &card->qdio.in_q->bufs[card->rx.b_index]
2078                                 .buffer->element[0];
2079                         card->rx.e_offset = 0;
2080                 }
2081
2082                 while (card->rx.b_count) {
2083                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2084                         if (!(card->rx.qdio_err &&
2085                             qeth_check_qdio_errors(card, buffer->buffer,
2086                             card->rx.qdio_err, "qinerr")))
2087                                 work_done += qeth_l3_process_inbound_buffer(
2088                                         card, new_budget, &done);
2089                         else
2090                                 done = 1;
2091
2092                         if (done) {
2093                                 if (card->options.performance_stats)
2094                                         card->perf_stats.bufs_rec++;
2095                                 qeth_put_buffer_pool_entry(card,
2096                                         buffer->pool_entry);
2097                                 qeth_queue_input_buffer(card, card->rx.b_index);
2098                                 card->rx.b_count--;
2099                                 if (card->rx.b_count) {
2100                                         card->rx.b_index =
2101                                                 (card->rx.b_index + 1) %
2102                                                 QDIO_MAX_BUFFERS_PER_Q;
2103                                         card->rx.b_element =
2104                                                 &card->qdio.in_q
2105                                                 ->bufs[card->rx.b_index]
2106                                                 .buffer->element[0];
2107                                         card->rx.e_offset = 0;
2108                                 }
2109                         }
2110
2111                         if (work_done >= budget)
2112                                 goto out;
2113                         else
2114                                 new_budget = budget - work_done;
2115                 }
2116         }
2117
2118         napi_complete(napi);
2119         if (qdio_start_irq(card->data.ccwdev, 0))
2120                 napi_schedule(&card->napi);
2121 out:
2122         if (card->options.performance_stats)
2123                 card->perf_stats.inbound_time += qeth_get_micros() -
2124                         card->perf_stats.inbound_start_time;
2125         return work_done;
2126 }
2127
2128 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2129                         struct qeth_card *card)
2130 {
2131         int rc = 0;
2132         u16 vid;
2133
2134         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2135                 struct net_device *netdev;
2136
2137                 rcu_read_lock();
2138                 netdev = __vlan_find_dev_deep(dev, vid);
2139                 rcu_read_unlock();
2140                 if (netdev == dev) {
2141                         rc = QETH_VLAN_CARD;
2142                         break;
2143                 }
2144         }
2145
2146         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2147                 return 0;
2148
2149         return rc;
2150 }
2151
2152 static int qeth_l3_verify_dev(struct net_device *dev)
2153 {
2154         struct qeth_card *card;
2155         unsigned long flags;
2156         int rc = 0;
2157
2158         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2159         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2160                 if (card->dev == dev) {
2161                         rc = QETH_REAL_CARD;
2162                         break;
2163                 }
2164                 rc = qeth_l3_verify_vlan_dev(dev, card);
2165                 if (rc)
2166                         break;
2167         }
2168         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2169
2170         return rc;
2171 }
2172
2173 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2174 {
2175         struct qeth_card *card = NULL;
2176         int rc;
2177
2178         rc = qeth_l3_verify_dev(dev);
2179         if (rc == QETH_REAL_CARD)
2180                 card = dev->ml_priv;
2181         else if (rc == QETH_VLAN_CARD)
2182                 card = vlan_dev_real_dev(dev)->ml_priv;
2183         if (card && card->options.layer2)
2184                 card = NULL;
2185         if (card)
2186                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2187         return card ;
2188 }
2189
2190 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2191 {
2192         int rc = 0;
2193
2194         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2195         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2196
2197         qeth_set_allowed_threads(card, 0, 1);
2198         if (card->options.sniffer &&
2199             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2200                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2201         if (card->read.state == CH_STATE_UP &&
2202             card->write.state == CH_STATE_UP &&
2203             (card->state == CARD_STATE_UP)) {
2204                 if (recovery_mode)
2205                         qeth_l3_stop(card->dev);
2206                 else {
2207                         rtnl_lock();
2208                         dev_close(card->dev);
2209                         rtnl_unlock();
2210                 }
2211                 card->state = CARD_STATE_SOFTSETUP;
2212         }
2213         if (card->state == CARD_STATE_SOFTSETUP) {
2214                 qeth_l3_clear_ip_list(card, 1);
2215                 qeth_clear_ipacmd_list(card);
2216                 card->state = CARD_STATE_HARDSETUP;
2217         }
2218         if (card->state == CARD_STATE_HARDSETUP) {
2219                 qeth_qdio_clear_card(card, 0);
2220                 qeth_clear_qdio_buffers(card);
2221                 qeth_clear_working_pool_list(card);
2222                 card->state = CARD_STATE_DOWN;
2223         }
2224         if (card->state == CARD_STATE_DOWN) {
2225                 qeth_clear_cmd_buffers(&card->read);
2226                 qeth_clear_cmd_buffers(&card->write);
2227         }
2228         return rc;
2229 }
2230
2231 /*
2232  * test for and Switch promiscuous mode (on or off)
2233  *  either for guestlan or HiperSocket Sniffer
2234  */
2235 static void
2236 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2237 {
2238         struct net_device *dev = card->dev;
2239
2240         if (((dev->flags & IFF_PROMISC) &&
2241              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2242             (!(dev->flags & IFF_PROMISC) &&
2243              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2244                 return;
2245
2246         if (card->info.guestlan) {              /* Guestlan trace */
2247                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2248                         qeth_setadp_promisc_mode(card);
2249         } else if (card->options.sniffer &&     /* HiperSockets trace */
2250                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2251                 if (dev->flags & IFF_PROMISC) {
2252                         QETH_CARD_TEXT(card, 3, "+promisc");
2253                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2254                 } else {
2255                         QETH_CARD_TEXT(card, 3, "-promisc");
2256                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2257                 }
2258         }
2259 }
2260
2261 static void qeth_l3_set_multicast_list(struct net_device *dev)
2262 {
2263         struct qeth_card *card = dev->ml_priv;
2264
2265         QETH_CARD_TEXT(card, 3, "setmulti");
2266         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2267             (card->state != CARD_STATE_UP))
2268                 return;
2269         if (!card->options.sniffer) {
2270                 qeth_l3_delete_mc_addresses(card);
2271                 qeth_l3_add_multicast_ipv4(card);
2272 #ifdef CONFIG_QETH_IPV6
2273                 qeth_l3_add_multicast_ipv6(card);
2274 #endif
2275                 qeth_l3_set_ip_addr_list(card);
2276                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2277                         return;
2278         }
2279         qeth_l3_handle_promisc_mode(card);
2280 }
2281
2282 static const char *qeth_l3_arp_get_error_cause(int *rc)
2283 {
2284         switch (*rc) {
2285         case QETH_IPA_ARP_RC_FAILED:
2286                 *rc = -EIO;
2287                 return "operation failed";
2288         case QETH_IPA_ARP_RC_NOTSUPP:
2289                 *rc = -EOPNOTSUPP;
2290                 return "operation not supported";
2291         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2292                 *rc = -EINVAL;
2293                 return "argument out of range";
2294         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2295                 *rc = -EOPNOTSUPP;
2296                 return "query operation not supported";
2297         case QETH_IPA_ARP_RC_Q_NO_DATA:
2298                 *rc = -ENOENT;
2299                 return "no query data available";
2300         default:
2301                 return "unknown error";
2302         }
2303 }
2304
2305 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2306 {
2307         int tmp;
2308         int rc;
2309
2310         QETH_CARD_TEXT(card, 3, "arpstnoe");
2311
2312         /*
2313          * currently GuestLAN only supports the ARP assist function
2314          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2315          * thus we say EOPNOTSUPP for this ARP function
2316          */
2317         if (card->info.guestlan)
2318                 return -EOPNOTSUPP;
2319         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2320                 return -EOPNOTSUPP;
2321         }
2322         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2323                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2324                                           no_entries);
2325         if (rc) {
2326                 tmp = rc;
2327                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2328                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2329                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2330         }
2331         return rc;
2332 }
2333
2334 static __u32 get_arp_entry_size(struct qeth_card *card,
2335                         struct qeth_arp_query_data *qdata,
2336                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2337 {
2338         __u32 rc;
2339         __u8 is_hsi;
2340
2341         is_hsi = qdata->reply_bits == 5;
2342         if (type->ip == QETHARP_IP_ADDR_V4) {
2343                 QETH_CARD_TEXT(card, 4, "arpev4");
2344                 if (strip_entries) {
2345                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2346                                 sizeof(struct qeth_arp_qi_entry7_short);
2347                 } else {
2348                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2349                                 sizeof(struct qeth_arp_qi_entry7);
2350                 }
2351         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2352                 QETH_CARD_TEXT(card, 4, "arpev6");
2353                 if (strip_entries) {
2354                         rc = is_hsi ?
2355                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2356                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2357                 } else {
2358                         rc = is_hsi ?
2359                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2360                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2361                 }
2362         } else {
2363                 QETH_CARD_TEXT(card, 4, "arpinv");
2364                 rc = 0;
2365         }
2366
2367         return rc;
2368 }
2369
2370 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2371 {
2372         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2373                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2374 }
2375
2376 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2377                 struct qeth_reply *reply, unsigned long data)
2378 {
2379         struct qeth_ipa_cmd *cmd;
2380         struct qeth_arp_query_data *qdata;
2381         struct qeth_arp_query_info *qinfo;
2382         int i;
2383         int e;
2384         int entrybytes_done;
2385         int stripped_bytes;
2386         __u8 do_strip_entries;
2387
2388         QETH_CARD_TEXT(card, 3, "arpquecb");
2389
2390         qinfo = (struct qeth_arp_query_info *) reply->param;
2391         cmd = (struct qeth_ipa_cmd *) data;
2392         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2393         if (cmd->hdr.return_code) {
2394                 QETH_CARD_TEXT(card, 4, "arpcberr");
2395                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2396                 return 0;
2397         }
2398         if (cmd->data.setassparms.hdr.return_code) {
2399                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2400                 QETH_CARD_TEXT(card, 4, "setaperr");
2401                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2402                 return 0;
2403         }
2404         qdata = &cmd->data.setassparms.data.query_arp;
2405         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2406
2407         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2408         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2409         entrybytes_done = 0;
2410         for (e = 0; e < qdata->no_entries; ++e) {
2411                 char *cur_entry;
2412                 __u32 esize;
2413                 struct qeth_arp_entrytype *etype;
2414
2415                 cur_entry = &qdata->data + entrybytes_done;
2416                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2417                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2418                         QETH_CARD_TEXT(card, 4, "pmis");
2419                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2420                         break;
2421                 }
2422                 esize = get_arp_entry_size(card, qdata, etype,
2423                         do_strip_entries);
2424                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2425                 if (!esize)
2426                         break;
2427
2428                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2429                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2430                         cmd->hdr.return_code = -ENOMEM;
2431                         goto out_error;
2432                 }
2433
2434                 memcpy(qinfo->udata + qinfo->udata_offset,
2435                         &qdata->data + entrybytes_done + stripped_bytes,
2436                         esize);
2437                 entrybytes_done += esize + stripped_bytes;
2438                 qinfo->udata_offset += esize;
2439                 ++qinfo->no_entries;
2440         }
2441         /* check if all replies received ... */
2442         if (cmd->data.setassparms.hdr.seq_no <
2443             cmd->data.setassparms.hdr.number_of_replies)
2444                 return 1;
2445         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2446         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2447         /* keep STRIP_ENTRIES flag so the user program can distinguish
2448          * stripped entries from normal ones */
2449         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2450                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2451         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2452         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2453         return 0;
2454 out_error:
2455         i = 0;
2456         memcpy(qinfo->udata, &i, 4);
2457         return 0;
2458 }
2459
2460 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2461                 struct qeth_cmd_buffer *iob, int len,
2462                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2463                         unsigned long),
2464                 void *reply_param)
2465 {
2466         QETH_CARD_TEXT(card, 4, "sendarp");
2467
2468         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2469         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2470                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2471         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2472                                       reply_cb, reply_param);
2473 }
2474
2475 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2476         enum qeth_prot_versions prot,
2477         struct qeth_arp_query_info *qinfo)
2478 {
2479         struct qeth_cmd_buffer *iob;
2480         struct qeth_ipa_cmd *cmd;
2481         int tmp;
2482         int rc;
2483
2484         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2485
2486         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2487                         IPA_CMD_ASS_ARP_QUERY_INFO,
2488                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2489                         prot);
2490         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2491         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2492         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2493         cmd->data.setassparms.data.query_arp.no_entries = 0;
2494         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2495                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2496                            qeth_l3_arp_query_cb, (void *)qinfo);
2497         if (rc) {
2498                 tmp = rc;
2499                 QETH_DBF_MESSAGE(2,
2500                         "Error while querying ARP cache on %s: %s "
2501                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2502                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2503         }
2504
2505         return rc;
2506 }
2507
2508 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2509 {
2510         struct qeth_arp_query_info qinfo = {0, };
2511         int rc;
2512
2513         QETH_CARD_TEXT(card, 3, "arpquery");
2514
2515         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2516                                IPA_ARP_PROCESSING)) {
2517                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2518                 rc = -EOPNOTSUPP;
2519                 goto out;
2520         }
2521         /* get size of userspace buffer and mask_bits -> 6 bytes */
2522         if (copy_from_user(&qinfo, udata, 6)) {
2523                 rc = -EFAULT;
2524                 goto out;
2525         }
2526         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2527         if (!qinfo.udata) {
2528                 rc = -ENOMEM;
2529                 goto out;
2530         }
2531         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2532         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2533         if (rc) {
2534                 if (copy_to_user(udata, qinfo.udata, 4))
2535                         rc = -EFAULT;
2536                         goto free_and_out;
2537         } else {
2538 #ifdef CONFIG_QETH_IPV6
2539                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2540                         /* fails in case of GuestLAN QDIO mode */
2541                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2542                                 &qinfo);
2543                 }
2544 #endif
2545                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2546                         QETH_CARD_TEXT(card, 4, "qactf");
2547                         rc = -EFAULT;
2548                         goto free_and_out;
2549                 }
2550                 QETH_CARD_TEXT_(card, 4, "qacts");
2551         }
2552 free_and_out:
2553         kfree(qinfo.udata);
2554 out:
2555         return rc;
2556 }
2557
2558 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2559                                 struct qeth_arp_cache_entry *entry)
2560 {
2561         struct qeth_cmd_buffer *iob;
2562         char buf[16];
2563         int tmp;
2564         int rc;
2565
2566         QETH_CARD_TEXT(card, 3, "arpadent");
2567
2568         /*
2569          * currently GuestLAN only supports the ARP assist function
2570          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2571          * thus we say EOPNOTSUPP for this ARP function
2572          */
2573         if (card->info.guestlan)
2574                 return -EOPNOTSUPP;
2575         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2576                 return -EOPNOTSUPP;
2577         }
2578
2579         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2580                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2581                                        sizeof(struct qeth_arp_cache_entry),
2582                                        QETH_PROT_IPV4);
2583         rc = qeth_l3_send_setassparms(card, iob,
2584                                    sizeof(struct qeth_arp_cache_entry),
2585                                    (unsigned long) entry,
2586                                    qeth_l3_default_setassparms_cb, NULL);
2587         if (rc) {
2588                 tmp = rc;
2589                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2590                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2591                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2592                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2593         }
2594         return rc;
2595 }
2596
2597 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2598                                 struct qeth_arp_cache_entry *entry)
2599 {
2600         struct qeth_cmd_buffer *iob;
2601         char buf[16] = {0, };
2602         int tmp;
2603         int rc;
2604
2605         QETH_CARD_TEXT(card, 3, "arprment");
2606
2607         /*
2608          * currently GuestLAN only supports the ARP assist function
2609          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2610          * thus we say EOPNOTSUPP for this ARP function
2611          */
2612         if (card->info.guestlan)
2613                 return -EOPNOTSUPP;
2614         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2615                 return -EOPNOTSUPP;
2616         }
2617         memcpy(buf, entry, 12);
2618         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2619                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2620                                        12,
2621                                        QETH_PROT_IPV4);
2622         rc = qeth_l3_send_setassparms(card, iob,
2623                                    12, (unsigned long)buf,
2624                                    qeth_l3_default_setassparms_cb, NULL);
2625         if (rc) {
2626                 tmp = rc;
2627                 memset(buf, 0, 16);
2628                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2629                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2630                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2631                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2632         }
2633         return rc;
2634 }
2635
2636 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2637 {
2638         int rc;
2639         int tmp;
2640
2641         QETH_CARD_TEXT(card, 3, "arpflush");
2642
2643         /*
2644          * currently GuestLAN only supports the ARP assist function
2645          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2646          * thus we say EOPNOTSUPP for this ARP function
2647         */
2648         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2649                 return -EOPNOTSUPP;
2650         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2651                 return -EOPNOTSUPP;
2652         }
2653         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2654                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2655         if (rc) {
2656                 tmp = rc;
2657                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2658                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2659                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2660         }
2661         return rc;
2662 }
2663
2664 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2665 {
2666         struct qeth_card *card = dev->ml_priv;
2667         struct qeth_arp_cache_entry arp_entry;
2668         struct mii_ioctl_data *mii_data;
2669         int rc = 0;
2670
2671         if (!card)
2672                 return -ENODEV;
2673
2674         if ((card->state != CARD_STATE_UP) &&
2675                 (card->state != CARD_STATE_SOFTSETUP))
2676                 return -ENODEV;
2677
2678         switch (cmd) {
2679         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2680                 if (!capable(CAP_NET_ADMIN)) {
2681                         rc = -EPERM;
2682                         break;
2683                 }
2684                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2685                 break;
2686         case SIOC_QETH_ARP_QUERY_INFO:
2687                 if (!capable(CAP_NET_ADMIN)) {
2688                         rc = -EPERM;
2689                         break;
2690                 }
2691                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2692                 break;
2693         case SIOC_QETH_ARP_ADD_ENTRY:
2694                 if (!capable(CAP_NET_ADMIN)) {
2695                         rc = -EPERM;
2696                         break;
2697                 }
2698                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2699                                    sizeof(struct qeth_arp_cache_entry)))
2700                         rc = -EFAULT;
2701                 else
2702                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2703                 break;
2704         case SIOC_QETH_ARP_REMOVE_ENTRY:
2705                 if (!capable(CAP_NET_ADMIN)) {
2706                         rc = -EPERM;
2707                         break;
2708                 }
2709                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2710                                    sizeof(struct qeth_arp_cache_entry)))
2711                         rc = -EFAULT;
2712                 else
2713                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2714                 break;
2715         case SIOC_QETH_ARP_FLUSH_CACHE:
2716                 if (!capable(CAP_NET_ADMIN)) {
2717                         rc = -EPERM;
2718                         break;
2719                 }
2720                 rc = qeth_l3_arp_flush_cache(card);
2721                 break;
2722         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2723                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2724                 break;
2725         case SIOC_QETH_GET_CARD_TYPE:
2726                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2727                      card->info.type == QETH_CARD_TYPE_OSX) &&
2728                     !card->info.guestlan)
2729                         return 1;
2730                 return 0;
2731                 break;
2732         case SIOCGMIIPHY:
2733                 mii_data = if_mii(rq);
2734                 mii_data->phy_id = 0;
2735                 break;
2736         case SIOCGMIIREG:
2737                 mii_data = if_mii(rq);
2738                 if (mii_data->phy_id != 0)
2739                         rc = -EINVAL;
2740                 else
2741                         mii_data->val_out = qeth_mdio_read(dev,
2742                                                         mii_data->phy_id,
2743                                                         mii_data->reg_num);
2744                 break;
2745         default:
2746                 rc = -EOPNOTSUPP;
2747         }
2748         if (rc)
2749                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2750         return rc;
2751 }
2752
2753 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2754 {
2755         int cast_type = RTN_UNSPEC;
2756         struct neighbour *n = NULL;
2757         struct dst_entry *dst;
2758
2759         dst = skb_dst(skb);
2760         if (dst)
2761                 n = dst_get_neighbour(dst);
2762         if (n) {
2763                 cast_type = n->type;
2764                 if ((cast_type == RTN_BROADCAST) ||
2765                     (cast_type == RTN_MULTICAST) ||
2766                     (cast_type == RTN_ANYCAST))
2767                         return cast_type;
2768                 else
2769                         return RTN_UNSPEC;
2770         }
2771         /* try something else */
2772         if (skb->protocol == ETH_P_IPV6)
2773                 return (skb_network_header(skb)[24] == 0xff) ?
2774                                 RTN_MULTICAST : 0;
2775         else if (skb->protocol == ETH_P_IP)
2776                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2777                                 RTN_MULTICAST : 0;
2778         /* ... */
2779         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2780                 return RTN_BROADCAST;
2781         else {
2782                 u16 hdr_mac;
2783
2784                 hdr_mac = *((u16 *)skb->data);
2785                 /* tr multicast? */
2786                 switch (card->info.link_type) {
2787                 case QETH_LINK_TYPE_HSTR:
2788                 case QETH_LINK_TYPE_LANE_TR:
2789                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2790                             (hdr_mac == QETH_TR_MAC_C))
2791                                 return RTN_MULTICAST;
2792                         break;
2793                 /* eth or so multicast? */
2794                 default:
2795                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2796                             (hdr_mac == QETH_ETH_MAC_V6))
2797                                 return RTN_MULTICAST;
2798                 }
2799         }
2800         return cast_type;
2801 }
2802
2803 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2804                 struct qeth_hdr *hdr, struct sk_buff *skb)
2805 {
2806         char daddr[16];
2807         struct af_iucv_trans_hdr *iucv_hdr;
2808
2809         skb_pull(skb, 14);
2810         card->dev->header_ops->create(skb, card->dev, 0,
2811                                       card->dev->dev_addr, card->dev->dev_addr,
2812                                       card->dev->addr_len);
2813         skb_pull(skb, 14);
2814         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2815         memset(hdr, 0, sizeof(struct qeth_hdr));
2816         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2817         hdr->hdr.l3.ext_flags = 0;
2818         hdr->hdr.l3.length = skb->len;
2819         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2820         memset(daddr, 0, sizeof(daddr));
2821         daddr[0] = 0xfe;
2822         daddr[1] = 0x80;
2823         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2824         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2825 }
2826
2827 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2828                 struct sk_buff *skb, int ipv, int cast_type)
2829 {
2830         struct neighbour *n = NULL;
2831         struct dst_entry *dst;
2832
2833         memset(hdr, 0, sizeof(struct qeth_hdr));
2834         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2835         hdr->hdr.l3.ext_flags = 0;
2836
2837         /*
2838          * before we're going to overwrite this location with next hop ip.
2839          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2840          */
2841         if (vlan_tx_tag_present(skb)) {
2842                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2843                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2844                 else
2845                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2846                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2847         }
2848
2849         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2850         dst = skb_dst(skb);
2851         if (dst)
2852                 n = dst_get_neighbour(dst);
2853         if (ipv == 4) {
2854                 /* IPv4 */
2855                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2856                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2857                 if (n) {
2858                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2859                             *((u32 *) n->primary_key);
2860                 } else {
2861                         /* fill in destination address used in ip header */
2862                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2863                                                         ip_hdr(skb)->daddr;
2864                 }
2865         } else if (ipv == 6) {
2866                 /* IPv6 */
2867                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2868                 if (card->info.type == QETH_CARD_TYPE_IQD)
2869                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2870                 if (n) {
2871                         memcpy(hdr->hdr.l3.dest_addr,
2872                                n->primary_key, 16);
2873                 } else {
2874                         /* fill in destination address used in ip header */
2875                         memcpy(hdr->hdr.l3.dest_addr,
2876                                &ipv6_hdr(skb)->daddr, 16);
2877                 }
2878         } else {
2879                 /* passthrough */
2880                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2881                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2882                         sizeof(__u16), skb->dev->broadcast, 6)) {
2883                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2884                                                 QETH_HDR_PASSTHRU;
2885                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2886                             skb->dev->broadcast, 6)) {
2887                         /* broadcast? */
2888                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2889                                                 QETH_HDR_PASSTHRU;
2890                 } else {
2891                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2892                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2893                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2894                 }
2895         }
2896 }
2897
2898 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2899                 struct qeth_hdr *hdr, struct sk_buff *skb)
2900 {
2901         struct iphdr *iph = ip_hdr(skb);
2902
2903         /* tcph->check contains already the pseudo hdr checksum
2904          * so just set the header flags
2905          */
2906         if (iph->protocol == IPPROTO_UDP)
2907                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2908         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2909                 QETH_HDR_EXT_CSUM_HDR_REQ;
2910         iph->check = 0;
2911         if (card->options.performance_stats)
2912                 card->perf_stats.tx_csum++;
2913 }
2914
2915 static void qeth_tso_fill_header(struct qeth_card *card,
2916                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2917 {
2918         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2919         struct tcphdr *tcph = tcp_hdr(skb);
2920         struct iphdr *iph = ip_hdr(skb);
2921         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2922
2923         /*fix header to TSO values ...*/
2924         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2925         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2926         /*set values which are fix for the first approach ...*/
2927         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2928         hdr->ext.imb_hdr_no  = 1;
2929         hdr->ext.hdr_type    = 1;
2930         hdr->ext.hdr_version = 1;
2931         hdr->ext.hdr_len     = 28;
2932         /*insert non-fix values */
2933         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2934         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2935         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2936                                        sizeof(struct qeth_hdr_tso));
2937         tcph->check = 0;
2938         if (skb->protocol == ETH_P_IPV6) {
2939                 ip6h->payload_len = 0;
2940                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2941                                                0, IPPROTO_TCP, 0);
2942         } else {
2943                 /*OSA want us to set these values ...*/
2944                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2945                                          0, IPPROTO_TCP, 0);
2946                 iph->tot_len = 0;
2947                 iph->check = 0;
2948         }
2949 }
2950
2951 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2952 {
2953         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2954                 tcp_hdr(skb)->doff * 4;
2955         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2956         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2957         elements += skb_shinfo(skb)->nr_frags;
2958         return elements;
2959 }
2960
2961 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2962 {
2963         int rc;
2964         u16 *tag;
2965         struct qeth_hdr *hdr = NULL;
2966         int elements_needed = 0;
2967         int elems;
2968         struct qeth_card *card = dev->ml_priv;
2969         struct sk_buff *new_skb = NULL;
2970         int ipv = qeth_get_ip_version(skb);
2971         int cast_type = qeth_l3_get_cast_type(card, skb);
2972         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2973                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2974         int tx_bytes = skb->len;
2975         bool large_send;
2976         int data_offset = -1;
2977         int nr_frags;
2978
2979         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2980              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2981               ((card->options.cq == QETH_CQ_ENABLED) &&
2982                (skb->protocol != ETH_P_AF_IUCV)))) ||
2983             card->options.sniffer)
2984                         goto tx_drop;
2985
2986         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2987                 card->stats.tx_carrier_errors++;
2988                 goto tx_drop;
2989         }
2990
2991         if ((cast_type == RTN_BROADCAST) &&
2992             (card->info.broadcast_capable == 0))
2993                 goto tx_drop;
2994
2995         if (card->options.performance_stats) {
2996                 card->perf_stats.outbound_cnt++;
2997                 card->perf_stats.outbound_start_time = qeth_get_micros();
2998         }
2999
3000         large_send = skb_is_gso(skb);
3001
3002         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
3003             (skb_shinfo(skb)->nr_frags == 0)) {
3004                 new_skb = skb;
3005                 if (new_skb->protocol == ETH_P_AF_IUCV)
3006                         data_offset = 0;
3007                 else
3008                         data_offset = ETH_HLEN;
3009                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3010                 if (!hdr)
3011                         goto tx_drop;
3012                 elements_needed++;
3013         } else {
3014                 /* create a clone with writeable headroom */
3015                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3016                                         + VLAN_HLEN);
3017                 if (!new_skb)
3018                         goto tx_drop;
3019         }
3020
3021         if (card->info.type == QETH_CARD_TYPE_IQD) {
3022                 if (data_offset < 0)
3023                         skb_pull(new_skb, ETH_HLEN);
3024         } else {
3025                 if (ipv == 4) {
3026                         if (card->dev->type == ARPHRD_IEEE802_TR)
3027                                 skb_pull(new_skb, TR_HLEN);
3028                         else
3029                                 skb_pull(new_skb, ETH_HLEN);
3030                 }
3031
3032                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
3033                         skb_push(new_skb, VLAN_HLEN);
3034                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3035                         skb_copy_to_linear_data_offset(new_skb, 4,
3036                                 new_skb->data + 8, 4);
3037                         skb_copy_to_linear_data_offset(new_skb, 8,
3038                                 new_skb->data + 12, 4);
3039                         tag = (u16 *)(new_skb->data + 12);
3040                         *tag = __constant_htons(ETH_P_8021Q);
3041                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3042                 }
3043         }
3044
3045         netif_stop_queue(dev);
3046
3047         /* fix hardware limitation: as long as we do not have sbal
3048          * chaining we can not send long frag lists
3049          */
3050         if (large_send) {
3051                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3052                         if (skb_linearize(new_skb))
3053                                 goto tx_drop;
3054                         if (card->options.performance_stats)
3055                                 card->perf_stats.tx_lin++;
3056                 }
3057         }
3058
3059         if (large_send && (cast_type == RTN_UNSPEC)) {
3060                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3061                                                 sizeof(struct qeth_hdr_tso));
3062                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3063                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3064                 qeth_tso_fill_header(card, hdr, new_skb);
3065                 elements_needed++;
3066         } else {
3067                 if (data_offset < 0) {
3068                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3069                                                 sizeof(struct qeth_hdr));
3070                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3071                                                 cast_type);
3072                 } else {
3073                         if (new_skb->protocol == ETH_P_AF_IUCV)
3074                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3075                         else {
3076                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3077                                                         cast_type);
3078                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3079                         }
3080                 }
3081
3082                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3083                         qeth_l3_hdr_csum(card, hdr, new_skb);
3084         }
3085
3086         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3087                                                  elements_needed);
3088         if (!elems) {
3089                 if (data_offset >= 0)
3090                         kmem_cache_free(qeth_core_header_cache, hdr);
3091                 goto tx_drop;
3092         }
3093         elements_needed += elems;
3094         nr_frags = skb_shinfo(new_skb)->nr_frags;
3095
3096         if (card->info.type != QETH_CARD_TYPE_IQD) {
3097                 int len;
3098                 if (large_send)
3099                         len = ((unsigned long)tcp_hdr(new_skb) +
3100                                 tcp_hdr(new_skb)->doff * 4) -
3101                                 (unsigned long)new_skb->data;
3102                 else
3103                         len = sizeof(struct qeth_hdr_layer3);
3104
3105                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3106                         goto tx_drop;
3107                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3108                                          elements_needed);
3109         } else
3110                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3111                                         elements_needed, data_offset, 0);
3112
3113         if (!rc) {
3114                 card->stats.tx_packets++;
3115                 card->stats.tx_bytes += tx_bytes;
3116                 if (new_skb != skb)
3117                         dev_kfree_skb_any(skb);
3118                 if (card->options.performance_stats) {
3119                         if (large_send) {
3120                                 card->perf_stats.large_send_bytes += tx_bytes;
3121                                 card->perf_stats.large_send_cnt++;
3122                         }
3123                         if (nr_frags) {
3124                                 card->perf_stats.sg_skbs_sent++;
3125                                 /* nr_frags + skb->data */
3126                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3127                         }
3128                 }
3129                 rc = NETDEV_TX_OK;
3130         } else {
3131                 if (data_offset >= 0)
3132                         kmem_cache_free(qeth_core_header_cache, hdr);
3133
3134                 if (rc == -EBUSY) {
3135                         if (new_skb != skb)
3136                                 dev_kfree_skb_any(new_skb);
3137                         return NETDEV_TX_BUSY;
3138                 } else
3139                         goto tx_drop;
3140         }
3141
3142         netif_wake_queue(dev);
3143         if (card->options.performance_stats)
3144                 card->perf_stats.outbound_time += qeth_get_micros() -
3145                         card->perf_stats.outbound_start_time;
3146         return rc;
3147
3148 tx_drop:
3149         card->stats.tx_dropped++;
3150         card->stats.tx_errors++;
3151         if ((new_skb != skb) && new_skb)
3152                 dev_kfree_skb_any(new_skb);
3153         dev_kfree_skb_any(skb);
3154         netif_wake_queue(dev);
3155         return NETDEV_TX_OK;
3156 }
3157
3158 static int __qeth_l3_open(struct net_device *dev)
3159 {
3160         struct qeth_card *card = dev->ml_priv;
3161         int rc = 0;
3162
3163         QETH_CARD_TEXT(card, 4, "qethopen");
3164         if (card->state == CARD_STATE_UP)
3165                 return rc;
3166         if (card->state != CARD_STATE_SOFTSETUP)
3167                 return -ENODEV;
3168         card->data.state = CH_STATE_UP;
3169         card->state = CARD_STATE_UP;
3170         netif_start_queue(dev);
3171
3172         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3173                 napi_enable(&card->napi);
3174                 napi_schedule(&card->napi);
3175         } else
3176                 rc = -EIO;
3177         return rc;
3178 }
3179
3180 static int qeth_l3_open(struct net_device *dev)
3181 {
3182         struct qeth_card *card = dev->ml_priv;
3183
3184         QETH_CARD_TEXT(card, 5, "qethope_");
3185         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3186                 QETH_CARD_TEXT(card, 3, "openREC");
3187                 return -ERESTARTSYS;
3188         }
3189         return __qeth_l3_open(dev);
3190 }
3191
3192 static int qeth_l3_stop(struct net_device *dev)
3193 {
3194         struct qeth_card *card = dev->ml_priv;
3195
3196         QETH_CARD_TEXT(card, 4, "qethstop");
3197         netif_tx_disable(dev);
3198         if (card->state == CARD_STATE_UP) {
3199                 card->state = CARD_STATE_SOFTSETUP;
3200                 napi_disable(&card->napi);
3201         }
3202         return 0;
3203 }
3204
3205 static u32 qeth_l3_fix_features(struct net_device *dev, u32 features)
3206 {
3207         struct qeth_card *card = dev->ml_priv;
3208
3209         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3210                 features &= ~NETIF_F_IP_CSUM;
3211         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3212                 features &= ~NETIF_F_TSO;
3213         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3214                 features &= ~NETIF_F_RXCSUM;
3215
3216         return features;
3217 }
3218
3219 static int qeth_l3_set_features(struct net_device *dev, u32 features)
3220 {
3221         struct qeth_card *card = dev->ml_priv;
3222         u32 changed = dev->features ^ features;
3223         int err;
3224
3225         if (!(changed & NETIF_F_RXCSUM))
3226                 return 0;
3227
3228         if (card->state == CARD_STATE_DOWN ||
3229             card->state == CARD_STATE_RECOVER)
3230                 return 0;
3231
3232         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3233         if (err)
3234                 dev->features = features ^ NETIF_F_RXCSUM;
3235
3236         return err;
3237 }
3238
3239 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3240         .get_link = ethtool_op_get_link,
3241         .get_strings = qeth_core_get_strings,
3242         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3243         .get_sset_count = qeth_core_get_sset_count,
3244         .get_drvinfo = qeth_core_get_drvinfo,
3245         .get_settings = qeth_core_ethtool_get_settings,
3246 };
3247
3248 /*
3249  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3250  * NOARP on the netdevice is no option because it also turns off neighbor
3251  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3252  * arp resolution but we want the hard header (packet socket will work
3253  * e.g. tcpdump)
3254  */
3255 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3256 {
3257         n->nud_state = NUD_NOARP;
3258         memcpy(n->ha, "FAKELL", 6);
3259         n->output = n->ops->connected_output;
3260         return 0;
3261 }
3262
3263 static int
3264 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3265 {
3266         if (np->tbl->family == AF_INET)
3267                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3268
3269         return 0;
3270 }
3271
3272 static const struct net_device_ops qeth_l3_netdev_ops = {
3273         .ndo_open               = qeth_l3_open,
3274         .ndo_stop               = qeth_l3_stop,
3275         .ndo_get_stats          = qeth_get_stats,
3276         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3277         .ndo_validate_addr      = eth_validate_addr,
3278         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3279         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3280         .ndo_change_mtu         = qeth_change_mtu,
3281         .ndo_fix_features       = qeth_l3_fix_features,
3282         .ndo_set_features       = qeth_l3_set_features,
3283         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3284         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3285         .ndo_tx_timeout         = qeth_tx_timeout,
3286 };
3287
3288 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3289         .ndo_open               = qeth_l3_open,
3290         .ndo_stop               = qeth_l3_stop,
3291         .ndo_get_stats          = qeth_get_stats,
3292         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3293         .ndo_validate_addr      = eth_validate_addr,
3294         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3295         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3296         .ndo_change_mtu         = qeth_change_mtu,
3297         .ndo_fix_features       = qeth_l3_fix_features,
3298         .ndo_set_features       = qeth_l3_set_features,
3299         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3300         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3301         .ndo_tx_timeout         = qeth_tx_timeout,
3302         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3303 };
3304
3305 static int qeth_l3_setup_netdev(struct qeth_card *card)
3306 {
3307         if (card->info.type == QETH_CARD_TYPE_OSD ||
3308             card->info.type == QETH_CARD_TYPE_OSX) {
3309                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3310                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3311 #ifdef CONFIG_TR
3312                         card->dev = alloc_trdev(0);
3313 #endif
3314                         if (!card->dev)
3315                                 return -ENODEV;
3316                         card->dev->netdev_ops = &qeth_l3_netdev_ops;
3317                 } else {
3318                         card->dev = alloc_etherdev(0);
3319                         if (!card->dev)
3320                                 return -ENODEV;
3321                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3322
3323                         /*IPv6 address autoconfiguration stuff*/
3324                         qeth_l3_get_unique_id(card);
3325                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3326                                 card->dev->dev_id = card->info.unique_id &
3327                                                          0xffff;
3328                         if (!card->info.guestlan) {
3329                                 card->dev->hw_features = NETIF_F_SG |
3330                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3331                                         NETIF_F_TSO;
3332                                 card->dev->features = NETIF_F_RXCSUM;
3333                         }
3334                 }
3335         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3336                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3337                 if (!card->dev)
3338                         return -ENODEV;
3339                 card->dev->flags |= IFF_NOARP;
3340                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3341                 qeth_l3_iqd_read_initial_mac(card);
3342                 if (card->options.hsuid[0])
3343                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3344         } else
3345                 return -ENODEV;
3346
3347         card->dev->ml_priv = card;
3348         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3349         card->dev->mtu = card->info.initial_mtu;
3350         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3351         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3352                                 NETIF_F_HW_VLAN_RX |
3353                                 NETIF_F_HW_VLAN_FILTER;
3354         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3355         card->dev->gso_max_size = 15 * PAGE_SIZE;
3356
3357         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3358         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3359         return register_netdev(card->dev);
3360 }
3361
3362 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3363 {
3364         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3365
3366         qeth_l3_create_device_attributes(&gdev->dev);
3367         card->options.layer2 = 0;
3368         card->info.hwtrap = 0;
3369         card->discipline.start_poll = qeth_qdio_start_poll;
3370         card->discipline.input_handler = (qdio_handler_t *)
3371                 qeth_qdio_input_handler;
3372         card->discipline.output_handler = (qdio_handler_t *)
3373                 qeth_qdio_output_handler;
3374         card->discipline.recover = qeth_l3_recover;
3375         return 0;
3376 }
3377
3378 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3379 {
3380         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3381
3382         qeth_l3_remove_device_attributes(&cgdev->dev);
3383
3384         qeth_set_allowed_threads(card, 0, 1);
3385         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3386
3387         if (cgdev->state == CCWGROUP_ONLINE)
3388                 qeth_l3_set_offline(cgdev);
3389
3390         if (card->dev) {
3391                 unregister_netdev(card->dev);
3392                 card->dev = NULL;
3393         }
3394
3395         qeth_l3_clear_ip_list(card, 0);
3396         qeth_l3_clear_ipato_list(card);
3397         return;
3398 }
3399
3400 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3401 {
3402         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3403         int rc = 0;
3404         enum qeth_card_states recover_flag;
3405
3406         BUG_ON(!card);
3407         mutex_lock(&card->discipline_mutex);
3408         mutex_lock(&card->conf_mutex);
3409         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3410         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3411
3412         recover_flag = card->state;
3413         rc = qeth_core_hardsetup_card(card);
3414         if (rc) {
3415                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3416                 rc = -ENODEV;
3417                 goto out_remove;
3418         }
3419
3420         if (!card->dev && qeth_l3_setup_netdev(card)) {
3421                 rc = -ENODEV;
3422                 goto out_remove;
3423         }
3424
3425         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3426                 if (card->info.hwtrap &&
3427                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3428                         card->info.hwtrap = 0;
3429         } else
3430                 card->info.hwtrap = 0;
3431
3432         card->state = CARD_STATE_HARDSETUP;
3433         memset(&card->rx, 0, sizeof(struct qeth_rx));
3434         qeth_print_status_message(card);
3435
3436         /* softsetup */
3437         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3438
3439         rc = qeth_send_startlan(card);
3440         if (rc) {
3441                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3442                 if (rc == 0xe080) {
3443                         dev_warn(&card->gdev->dev,
3444                                 "The LAN is offline\n");
3445                         card->lan_online = 0;
3446                         goto contin;
3447                 }
3448                 rc = -ENODEV;
3449                 goto out_remove;
3450         } else
3451                 card->lan_online = 1;
3452
3453 contin:
3454         rc = qeth_l3_setadapter_parms(card);
3455         if (rc)
3456                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3457         if (!card->options.sniffer) {
3458                 rc = qeth_l3_start_ipassists(card);
3459                 if (rc)
3460                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3461                 rc = qeth_l3_setrouting_v4(card);
3462                 if (rc)
3463                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3464                 rc = qeth_l3_setrouting_v6(card);
3465                 if (rc)
3466                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3467         }
3468         netif_tx_disable(card->dev);
3469
3470         rc = qeth_init_qdio_queues(card);
3471         if (rc) {
3472                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3473                 rc = -ENODEV;
3474                 goto out_remove;
3475         }
3476         card->state = CARD_STATE_SOFTSETUP;
3477
3478         qeth_set_allowed_threads(card, 0xffffffff, 0);
3479         qeth_l3_set_ip_addr_list(card);
3480         if (card->lan_online)
3481                 netif_carrier_on(card->dev);
3482         else
3483                 netif_carrier_off(card->dev);
3484         if (recover_flag == CARD_STATE_RECOVER) {
3485                 if (recovery_mode)
3486                         __qeth_l3_open(card->dev);
3487                 else {
3488                         rtnl_lock();
3489                         dev_open(card->dev);
3490                         rtnl_unlock();
3491                 }
3492                 qeth_l3_set_multicast_list(card->dev);
3493         }
3494         /* let user_space know that device is online */
3495         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3496         mutex_unlock(&card->conf_mutex);
3497         mutex_unlock(&card->discipline_mutex);
3498         return 0;
3499 out_remove:
3500         qeth_l3_stop_card(card, 0);
3501         ccw_device_set_offline(CARD_DDEV(card));
3502         ccw_device_set_offline(CARD_WDEV(card));
3503         ccw_device_set_offline(CARD_RDEV(card));
3504         if (recover_flag == CARD_STATE_RECOVER)
3505                 card->state = CARD_STATE_RECOVER;
3506         else
3507                 card->state = CARD_STATE_DOWN;
3508         mutex_unlock(&card->conf_mutex);
3509         mutex_unlock(&card->discipline_mutex);
3510         return rc;
3511 }
3512
3513 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3514 {
3515         return __qeth_l3_set_online(gdev, 0);
3516 }
3517
3518 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3519                         int recovery_mode)
3520 {
3521         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3522         int rc = 0, rc2 = 0, rc3 = 0;
3523         enum qeth_card_states recover_flag;
3524
3525         mutex_lock(&card->discipline_mutex);
3526         mutex_lock(&card->conf_mutex);
3527         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3528         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3529
3530         if (card->dev && netif_carrier_ok(card->dev))
3531                 netif_carrier_off(card->dev);
3532         recover_flag = card->state;
3533         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3534                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3535                 card->info.hwtrap = 1;
3536         }
3537         qeth_l3_stop_card(card, recovery_mode);
3538         rc  = ccw_device_set_offline(CARD_DDEV(card));
3539         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3540         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3541         if (!rc)
3542                 rc = (rc2) ? rc2 : rc3;
3543         if (rc)
3544                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3545         if (recover_flag == CARD_STATE_UP)
3546                 card->state = CARD_STATE_RECOVER;
3547         /* let user_space know that device is offline */
3548         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3549         mutex_unlock(&card->conf_mutex);
3550         mutex_unlock(&card->discipline_mutex);
3551         return 0;
3552 }
3553
3554 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3555 {
3556         return __qeth_l3_set_offline(cgdev, 0);
3557 }
3558
3559 static int qeth_l3_recover(void *ptr)
3560 {
3561         struct qeth_card *card;
3562         int rc = 0;
3563
3564         card = (struct qeth_card *) ptr;
3565         QETH_CARD_TEXT(card, 2, "recover1");
3566         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3567         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3568                 return 0;
3569         QETH_CARD_TEXT(card, 2, "recover2");
3570         dev_warn(&card->gdev->dev,
3571                 "A recovery process has been started for the device\n");
3572         __qeth_l3_set_offline(card->gdev, 1);
3573         rc = __qeth_l3_set_online(card->gdev, 1);
3574         if (!rc)
3575                 dev_info(&card->gdev->dev,
3576                         "Device successfully recovered!\n");
3577         else {
3578                 rtnl_lock();
3579                 dev_close(card->dev);
3580                 rtnl_unlock();
3581                 dev_warn(&card->gdev->dev, "The qeth device driver "
3582                         "failed to recover an error on the device\n");
3583         }
3584         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3585         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3586         return 0;
3587 }
3588
3589 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3590 {
3591         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3592         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3593                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3594         qeth_qdio_clear_card(card, 0);
3595         qeth_clear_qdio_buffers(card);
3596 }
3597
3598 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3599 {
3600         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3601
3602         if (card->dev)
3603                 netif_device_detach(card->dev);
3604         qeth_set_allowed_threads(card, 0, 1);
3605         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3606         if (gdev->state == CCWGROUP_OFFLINE)
3607                 return 0;
3608         if (card->state == CARD_STATE_UP) {
3609                 if (card->info.hwtrap)
3610                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3611                 __qeth_l3_set_offline(card->gdev, 1);
3612         } else
3613                 __qeth_l3_set_offline(card->gdev, 0);
3614         return 0;
3615 }
3616
3617 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3618 {
3619         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3620         int rc = 0;
3621
3622         if (gdev->state == CCWGROUP_OFFLINE)
3623                 goto out;
3624
3625         if (card->state == CARD_STATE_RECOVER) {
3626                 rc = __qeth_l3_set_online(card->gdev, 1);
3627                 if (rc) {
3628                         rtnl_lock();
3629                         dev_close(card->dev);
3630                         rtnl_unlock();
3631                 }
3632         } else
3633                 rc = __qeth_l3_set_online(card->gdev, 0);
3634 out:
3635         qeth_set_allowed_threads(card, 0xffffffff, 0);
3636         if (card->dev)
3637                 netif_device_attach(card->dev);
3638         if (rc)
3639                 dev_warn(&card->gdev->dev, "The qeth device driver "
3640                         "failed to recover an error on the device\n");
3641         return rc;
3642 }
3643
3644 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3645         .probe = qeth_l3_probe_device,
3646         .remove = qeth_l3_remove_device,
3647         .set_online = qeth_l3_set_online,
3648         .set_offline = qeth_l3_set_offline,
3649         .shutdown = qeth_l3_shutdown,
3650         .freeze = qeth_l3_pm_suspend,
3651         .thaw = qeth_l3_pm_resume,
3652         .restore = qeth_l3_pm_resume,
3653 };
3654 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3655
3656 static int qeth_l3_ip_event(struct notifier_block *this,
3657                             unsigned long event, void *ptr)
3658 {
3659         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3660         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3661         struct qeth_ipaddr *addr;
3662         struct qeth_card *card;
3663
3664         if (dev_net(dev) != &init_net)
3665                 return NOTIFY_DONE;
3666
3667         card = qeth_l3_get_card_from_dev(dev);
3668         QETH_CARD_TEXT(card, 3, "ipevent");
3669         if (!card)
3670                 return NOTIFY_DONE;
3671
3672         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3673         if (addr != NULL) {
3674                 addr->u.a4.addr = ifa->ifa_address;
3675                 addr->u.a4.mask = ifa->ifa_mask;
3676                 addr->type = QETH_IP_TYPE_NORMAL;
3677         } else
3678                 goto out;
3679
3680         switch (event) {
3681         case NETDEV_UP:
3682                 if (!qeth_l3_add_ip(card, addr))
3683                         kfree(addr);
3684                 break;
3685         case NETDEV_DOWN:
3686                 if (!qeth_l3_delete_ip(card, addr))
3687                         kfree(addr);
3688                 break;
3689         default:
3690                 break;
3691         }
3692         qeth_l3_set_ip_addr_list(card);
3693 out:
3694         return NOTIFY_DONE;
3695 }
3696
3697 static struct notifier_block qeth_l3_ip_notifier = {
3698         qeth_l3_ip_event,
3699         NULL,
3700 };
3701
3702 #ifdef CONFIG_QETH_IPV6
3703 /**
3704  * IPv6 event handler
3705  */
3706 static int qeth_l3_ip6_event(struct notifier_block *this,
3707                              unsigned long event, void *ptr)
3708 {
3709         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3710         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3711         struct qeth_ipaddr *addr;
3712         struct qeth_card *card;
3713
3714         card = qeth_l3_get_card_from_dev(dev);
3715         if (!card)
3716                 return NOTIFY_DONE;
3717         QETH_CARD_TEXT(card, 3, "ip6event");
3718         if (!qeth_is_supported(card, IPA_IPV6))
3719                 return NOTIFY_DONE;
3720
3721         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3722         if (addr != NULL) {
3723                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3724                 addr->u.a6.pfxlen = ifa->prefix_len;
3725                 addr->type = QETH_IP_TYPE_NORMAL;
3726         } else
3727                 goto out;
3728
3729         switch (event) {
3730         case NETDEV_UP:
3731                 if (!qeth_l3_add_ip(card, addr))
3732                         kfree(addr);
3733                 break;
3734         case NETDEV_DOWN:
3735                 if (!qeth_l3_delete_ip(card, addr))
3736                         kfree(addr);
3737                 break;
3738         default:
3739                 break;
3740         }
3741         qeth_l3_set_ip_addr_list(card);
3742 out:
3743         return NOTIFY_DONE;
3744 }
3745
3746 static struct notifier_block qeth_l3_ip6_notifier = {
3747         qeth_l3_ip6_event,
3748         NULL,
3749 };
3750 #endif
3751
3752 static int qeth_l3_register_notifiers(void)
3753 {
3754         int rc;
3755
3756         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3757         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3758         if (rc)
3759                 return rc;
3760 #ifdef CONFIG_QETH_IPV6
3761         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3762         if (rc) {
3763                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3764                 return rc;
3765         }
3766 #else
3767         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3768 #endif
3769         return 0;
3770 }
3771
3772 static void qeth_l3_unregister_notifiers(void)
3773 {
3774
3775         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3776         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3777 #ifdef CONFIG_QETH_IPV6
3778         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3779 #endif /* QETH_IPV6 */
3780 }
3781
3782 static int __init qeth_l3_init(void)
3783 {
3784         int rc = 0;
3785
3786         pr_info("register layer 3 discipline\n");
3787         rc = qeth_l3_register_notifiers();
3788         return rc;
3789 }
3790
3791 static void __exit qeth_l3_exit(void)
3792 {
3793         qeth_l3_unregister_notifiers();
3794         pr_info("unregister layer 3 discipline\n");
3795 }
3796
3797 module_init(qeth_l3_init);
3798 module_exit(qeth_l3_exit);
3799 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3800 MODULE_DESCRIPTION("qeth layer 3 discipline");
3801 MODULE_LICENSE("GPL");