s390/ap: Fix wrong or missing comments
[linux-3.10.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/route.h>
32 #include <net/ip6_fib.h>
33 #include <net/ip6_checksum.h>
34 #include <net/iucv/af_iucv.h>
35
36 #include "qeth_l3.h"
37
38
39 static int qeth_l3_set_offline(struct ccwgroup_device *);
40 static int qeth_l3_recover(void *);
41 static int qeth_l3_stop(struct net_device *);
42 static void qeth_l3_set_multicast_list(struct net_device *);
43 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
44 static int qeth_l3_register_addr_entry(struct qeth_card *,
45                 struct qeth_ipaddr *);
46 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
47                 struct qeth_ipaddr *);
48 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
49 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
50
51 static int qeth_l3_isxdigit(char *buf)
52 {
53         while (*buf) {
54                 if (!isxdigit(*buf++))
55                         return 0;
56         }
57         return 1;
58 }
59
60 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
61 {
62         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
63 }
64
65 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
66 {
67         int count = 0, rc = 0;
68         int in[4];
69         char c;
70
71         rc = sscanf(buf, "%u.%u.%u.%u%c",
72                     &in[0], &in[1], &in[2], &in[3], &c);
73         if (rc != 4 && (rc != 5 || c != '\n'))
74                 return -EINVAL;
75         for (count = 0; count < 4; count++) {
76                 if (in[count] > 255)
77                         return -EINVAL;
78                 addr[count] = in[count];
79         }
80         return 0;
81 }
82
83 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
84 {
85         sprintf(buf, "%pI6", addr);
86 }
87
88 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
89 {
90         const char *end, *end_tmp, *start;
91         __u16 *in;
92         char num[5];
93         int num2, cnt, out, found, save_cnt;
94         unsigned short in_tmp[8] = {0, };
95
96         cnt = out = found = save_cnt = num2 = 0;
97         end = start = buf;
98         in = (__u16 *) addr;
99         memset(in, 0, 16);
100         while (*end) {
101                 end = strchr(start, ':');
102                 if (end == NULL) {
103                         end = buf + strlen(buf);
104                         end_tmp = strchr(start, '\n');
105                         if (end_tmp != NULL)
106                                 end = end_tmp;
107                         out = 1;
108                 }
109                 if ((end - start)) {
110                         memset(num, 0, 5);
111                         if ((end - start) > 4)
112                                 return -EINVAL;
113                         memcpy(num, start, end - start);
114                         if (!qeth_l3_isxdigit(num))
115                                 return -EINVAL;
116                         sscanf(start, "%x", &num2);
117                         if (found)
118                                 in_tmp[save_cnt++] = num2;
119                         else
120                                 in[cnt++] = num2;
121                         if (out)
122                                 break;
123                 } else {
124                         if (found)
125                                 return -EINVAL;
126                         found = 1;
127                 }
128                 start = ++end;
129         }
130         if (cnt + save_cnt > 8)
131                 return -EINVAL;
132         cnt = 7;
133         while (save_cnt)
134                 in[cnt--] = in_tmp[--save_cnt];
135         return 0;
136 }
137
138 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
139                                 char *buf)
140 {
141         if (proto == QETH_PROT_IPV4)
142                 qeth_l3_ipaddr4_to_string(addr, buf);
143         else if (proto == QETH_PROT_IPV6)
144                 qeth_l3_ipaddr6_to_string(addr, buf);
145 }
146
147 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
148                                 __u8 *addr)
149 {
150         if (proto == QETH_PROT_IPV4)
151                 return qeth_l3_string_to_ipaddr4(buf, addr);
152         else if (proto == QETH_PROT_IPV6)
153                 return qeth_l3_string_to_ipaddr6(buf, addr);
154         else
155                 return -EINVAL;
156 }
157
158 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
159 {
160         int i, j;
161         u8 octet;
162
163         for (i = 0; i < len; ++i) {
164                 octet = addr[i];
165                 for (j = 7; j >= 0; --j) {
166                         bits[i*8 + j] = octet & 1;
167                         octet >>= 1;
168                 }
169         }
170 }
171
172 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
173                                                 struct qeth_ipaddr *addr)
174 {
175         struct qeth_ipato_entry *ipatoe;
176         u8 addr_bits[128] = {0, };
177         u8 ipatoe_bits[128] = {0, };
178         int rc = 0;
179
180         if (!card->ipato.enabled)
181                 return 0;
182
183         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
184                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
185         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
186                 if (addr->proto != ipatoe->proto)
187                         continue;
188                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
189                                           (ipatoe->proto == QETH_PROT_IPV4) ?
190                                           4 : 16);
191                 if (addr->proto == QETH_PROT_IPV4)
192                         rc = !memcmp(addr_bits, ipatoe_bits,
193                                      min(32, ipatoe->mask_bits));
194                 else
195                         rc = !memcmp(addr_bits, ipatoe_bits,
196                                      min(128, ipatoe->mask_bits));
197                 if (rc)
198                         break;
199         }
200         /* invert? */
201         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
202                 rc = !rc;
203         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
204                 rc = !rc;
205
206         return rc;
207 }
208
209 /*
210  * Add IP to be added to todo list. If there is already an "add todo"
211  * in this list we just incremenent the reference count.
212  * Returns 0 if we  just incremented reference count.
213  */
214 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
215                                         struct qeth_ipaddr *addr, int add)
216 {
217         struct qeth_ipaddr *tmp, *t;
218         int found = 0;
219
220         if (card->options.sniffer)
221                 return 0;
222         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
223                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
224                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
225                         return 0;
226                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
227                     (addr->proto       == QETH_PROT_IPV4)     &&
228                     (tmp->type         == addr->type)         &&
229                     (tmp->is_multicast == addr->is_multicast) &&
230                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
231                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
232                         found = 1;
233                         break;
234                 }
235                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
236                     (addr->proto       == QETH_PROT_IPV6)      &&
237                     (tmp->type         == addr->type)          &&
238                     (tmp->is_multicast == addr->is_multicast)  &&
239                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
240                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
241                             sizeof(struct in6_addr)) == 0)) {
242                         found = 1;
243                         break;
244                 }
245         }
246         if (found) {
247                 if (addr->users != 0)
248                         tmp->users += addr->users;
249                 else
250                         tmp->users += add ? 1 : -1;
251                 if (tmp->users == 0) {
252                         list_del(&tmp->entry);
253                         kfree(tmp);
254                 }
255                 return 0;
256         } else {
257                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
258                         list_add(&addr->entry, card->ip_tbd_list);
259                 else {
260                         if (addr->users == 0)
261                                 addr->users += add ? 1 : -1;
262                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
263                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
264                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
265                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
266                         }
267                         list_add_tail(&addr->entry, card->ip_tbd_list);
268                 }
269                 return 1;
270         }
271 }
272
273 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
274 {
275         unsigned long flags;
276         int rc = 0;
277
278         QETH_CARD_TEXT(card, 4, "delip");
279
280         if (addr->proto == QETH_PROT_IPV4)
281                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
282         else {
283                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
284                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
285         }
286         spin_lock_irqsave(&card->ip_lock, flags);
287         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
288         spin_unlock_irqrestore(&card->ip_lock, flags);
289         return rc;
290 }
291
292 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
293 {
294         unsigned long flags;
295         int rc = 0;
296
297         QETH_CARD_TEXT(card, 4, "addip");
298         if (addr->proto == QETH_PROT_IPV4)
299                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
300         else {
301                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
302                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
303         }
304         spin_lock_irqsave(&card->ip_lock, flags);
305         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
306         spin_unlock_irqrestore(&card->ip_lock, flags);
307         return rc;
308 }
309
310
311 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
312                                 enum qeth_prot_versions prot)
313 {
314         struct qeth_ipaddr *addr;
315
316         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
317         if (addr == NULL) {
318                 return NULL;
319         }
320         addr->type = QETH_IP_TYPE_NORMAL;
321         addr->proto = prot;
322         return addr;
323 }
324
325 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
326 {
327         struct qeth_ipaddr *iptodo;
328         unsigned long flags;
329
330         QETH_CARD_TEXT(card, 4, "delmc");
331         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
332         if (!iptodo) {
333                 QETH_CARD_TEXT(card, 2, "dmcnomem");
334                 return;
335         }
336         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
337         spin_lock_irqsave(&card->ip_lock, flags);
338         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
339                 kfree(iptodo);
340         spin_unlock_irqrestore(&card->ip_lock, flags);
341 }
342
343 /*
344  * Add/remove address to/from card's ip list, i.e. try to add or remove
345  * reference to/from an IP address that is already registered on the card.
346  * Returns:
347  *      0  address was on card and its reference count has been adjusted,
348  *         but is still > 0, so nothing has to be done
349  *         also returns 0 if card was not on card and the todo was to delete
350  *         the address -> there is also nothing to be done
351  *      1  address was not on card and the todo is to add it to the card's ip
352  *         list
353  *      -1 address was on card and its reference count has been decremented
354  *         to <= 0 by the todo -> address must be removed from card
355  */
356 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
357                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
358 {
359         struct qeth_ipaddr *addr;
360         int found = 0;
361
362         list_for_each_entry(addr, &card->ip_list, entry) {
363                 if ((addr->proto == QETH_PROT_IPV4) &&
364                     (todo->proto == QETH_PROT_IPV4) &&
365                     (addr->type == todo->type) &&
366                     (addr->u.a4.addr == todo->u.a4.addr) &&
367                     (addr->u.a4.mask == todo->u.a4.mask)) {
368                         found = 1;
369                         break;
370                 }
371                 if ((addr->proto == QETH_PROT_IPV6) &&
372                     (todo->proto == QETH_PROT_IPV6) &&
373                     (addr->type == todo->type) &&
374                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
375                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
376                             sizeof(struct in6_addr)) == 0)) {
377                         found = 1;
378                         break;
379                 }
380         }
381         if (found) {
382                 addr->users += todo->users;
383                 if (addr->users <= 0) {
384                         *__addr = addr;
385                         return -1;
386                 } else {
387                         /* for VIPA and RXIP limit refcount to 1 */
388                         if (addr->type != QETH_IP_TYPE_NORMAL)
389                                 addr->users = 1;
390                         return 0;
391                 }
392         }
393         if (todo->users > 0) {
394                 /* for VIPA and RXIP limit refcount to 1 */
395                 if (todo->type != QETH_IP_TYPE_NORMAL)
396                         todo->users = 1;
397                 return 1;
398         } else
399                 return 0;
400 }
401
402 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
403                                         unsigned long *flags)
404 {
405         struct list_head fail_list;
406         struct qeth_ipaddr *addr, *tmp;
407         int rc;
408
409         INIT_LIST_HEAD(&fail_list);
410 again:
411         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
412                 if (addr->is_multicast) {
413                         list_del(&addr->entry);
414                         spin_unlock_irqrestore(&card->ip_lock, *flags);
415                         rc = qeth_l3_deregister_addr_entry(card, addr);
416                         spin_lock_irqsave(&card->ip_lock, *flags);
417                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
418                                 kfree(addr);
419                         else
420                                 list_add_tail(&addr->entry, &fail_list);
421                         goto again;
422                 }
423         }
424         list_splice(&fail_list, &card->ip_list);
425 }
426
427 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
428 {
429         struct list_head *tbd_list;
430         struct qeth_ipaddr *todo, *addr;
431         unsigned long flags;
432         int rc;
433
434         QETH_CARD_TEXT(card, 2, "sdiplist");
435         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
436
437         if ((card->state != CARD_STATE_UP &&
438              card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
439                 return;
440         }
441
442         spin_lock_irqsave(&card->ip_lock, flags);
443         tbd_list = card->ip_tbd_list;
444         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
445         if (!card->ip_tbd_list) {
446                 QETH_CARD_TEXT(card, 0, "silnomem");
447                 card->ip_tbd_list = tbd_list;
448                 spin_unlock_irqrestore(&card->ip_lock, flags);
449                 return;
450         } else
451                 INIT_LIST_HEAD(card->ip_tbd_list);
452
453         while (!list_empty(tbd_list)) {
454                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
455                 list_del(&todo->entry);
456                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
457                         __qeth_l3_delete_all_mc(card, &flags);
458                         kfree(todo);
459                         continue;
460                 }
461                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
462                 if (rc == 0) {
463                         /* nothing to be done; only adjusted refcount */
464                         kfree(todo);
465                 } else if (rc == 1) {
466                         /* new entry to be added to on-card list */
467                         spin_unlock_irqrestore(&card->ip_lock, flags);
468                         rc = qeth_l3_register_addr_entry(card, todo);
469                         spin_lock_irqsave(&card->ip_lock, flags);
470                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
471                                 list_add_tail(&todo->entry, &card->ip_list);
472                         else
473                                 kfree(todo);
474                 } else if (rc == -1) {
475                         /* on-card entry to be removed */
476                         list_del_init(&addr->entry);
477                         spin_unlock_irqrestore(&card->ip_lock, flags);
478                         rc = qeth_l3_deregister_addr_entry(card, addr);
479                         spin_lock_irqsave(&card->ip_lock, flags);
480                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
481                                 kfree(addr);
482                         else
483                                 list_add_tail(&addr->entry, &card->ip_list);
484                         kfree(todo);
485                 }
486         }
487         spin_unlock_irqrestore(&card->ip_lock, flags);
488         kfree(tbd_list);
489 }
490
491 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
492 {
493         struct qeth_ipaddr *addr, *tmp;
494         unsigned long flags;
495
496         QETH_CARD_TEXT(card, 4, "clearip");
497         if (recover && card->options.sniffer)
498                 return;
499         spin_lock_irqsave(&card->ip_lock, flags);
500         /* clear todo list */
501         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
502                 list_del(&addr->entry);
503                 kfree(addr);
504         }
505
506         while (!list_empty(&card->ip_list)) {
507                 addr = list_entry(card->ip_list.next,
508                                   struct qeth_ipaddr, entry);
509                 list_del_init(&addr->entry);
510                 if (!recover || addr->is_multicast) {
511                         kfree(addr);
512                         continue;
513                 }
514                 list_add_tail(&addr->entry, card->ip_tbd_list);
515         }
516         spin_unlock_irqrestore(&card->ip_lock, flags);
517 }
518
519 static int qeth_l3_address_exists_in_list(struct list_head *list,
520                 struct qeth_ipaddr *addr, int same_type)
521 {
522         struct qeth_ipaddr *tmp;
523
524         list_for_each_entry(tmp, list, entry) {
525                 if ((tmp->proto == QETH_PROT_IPV4) &&
526                     (addr->proto == QETH_PROT_IPV4) &&
527                     ((same_type && (tmp->type == addr->type)) ||
528                     (!same_type && (tmp->type != addr->type))) &&
529                     (tmp->u.a4.addr == addr->u.a4.addr))
530                         return 1;
531
532                 if ((tmp->proto == QETH_PROT_IPV6) &&
533                     (addr->proto == QETH_PROT_IPV6) &&
534                     ((same_type && (tmp->type == addr->type)) ||
535                     (!same_type && (tmp->type != addr->type))) &&
536                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
537                             sizeof(struct in6_addr)) == 0))
538                         return 1;
539
540         }
541         return 0;
542 }
543
544 static int qeth_l3_send_setdelmc(struct qeth_card *card,
545                         struct qeth_ipaddr *addr, int ipacmd)
546 {
547         int rc;
548         struct qeth_cmd_buffer *iob;
549         struct qeth_ipa_cmd *cmd;
550
551         QETH_CARD_TEXT(card, 4, "setdelmc");
552
553         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
554         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
555         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
556         if (addr->proto == QETH_PROT_IPV6)
557                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
558                        sizeof(struct in6_addr));
559         else
560                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
561
562         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
563
564         return rc;
565 }
566
567 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
568 {
569         int i, j;
570         for (i = 0; i < 16; i++) {
571                 j = (len) - (i * 8);
572                 if (j >= 8)
573                         netmask[i] = 0xff;
574                 else if (j > 0)
575                         netmask[i] = (u8)(0xFF00 >> j);
576                 else
577                         netmask[i] = 0;
578         }
579 }
580
581 static int qeth_l3_send_setdelip(struct qeth_card *card,
582                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
583 {
584         int rc;
585         struct qeth_cmd_buffer *iob;
586         struct qeth_ipa_cmd *cmd;
587         __u8 netmask[16];
588
589         QETH_CARD_TEXT(card, 4, "setdelip");
590         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
591
592         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
593         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
594         if (addr->proto == QETH_PROT_IPV6) {
595                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
596                        sizeof(struct in6_addr));
597                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
598                 memcpy(cmd->data.setdelip6.mask, netmask,
599                        sizeof(struct in6_addr));
600                 cmd->data.setdelip6.flags = flags;
601         } else {
602                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
603                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
604                 cmd->data.setdelip4.flags = flags;
605         }
606
607         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
608
609         return rc;
610 }
611
612 static int qeth_l3_send_setrouting(struct qeth_card *card,
613         enum qeth_routing_types type, enum qeth_prot_versions prot)
614 {
615         int rc;
616         struct qeth_ipa_cmd *cmd;
617         struct qeth_cmd_buffer *iob;
618
619         QETH_CARD_TEXT(card, 4, "setroutg");
620         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
621         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
622         cmd->data.setrtg.type = (type);
623         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
624
625         return rc;
626 }
627
628 static void qeth_l3_correct_routing_type(struct qeth_card *card,
629                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
630 {
631         if (card->info.type == QETH_CARD_TYPE_IQD) {
632                 switch (*type) {
633                 case NO_ROUTER:
634                 case PRIMARY_CONNECTOR:
635                 case SECONDARY_CONNECTOR:
636                 case MULTICAST_ROUTER:
637                         return;
638                 default:
639                         goto out_inval;
640                 }
641         } else {
642                 switch (*type) {
643                 case NO_ROUTER:
644                 case PRIMARY_ROUTER:
645                 case SECONDARY_ROUTER:
646                         return;
647                 case MULTICAST_ROUTER:
648                         if (qeth_is_ipafunc_supported(card, prot,
649                                                       IPA_OSA_MC_ROUTER))
650                                 return;
651                 default:
652                         goto out_inval;
653                 }
654         }
655 out_inval:
656         *type = NO_ROUTER;
657 }
658
659 int qeth_l3_setrouting_v4(struct qeth_card *card)
660 {
661         int rc;
662
663         QETH_CARD_TEXT(card, 3, "setrtg4");
664
665         qeth_l3_correct_routing_type(card, &card->options.route4.type,
666                                   QETH_PROT_IPV4);
667
668         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
669                                   QETH_PROT_IPV4);
670         if (rc) {
671                 card->options.route4.type = NO_ROUTER;
672                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
673                         " on %s. Type set to 'no router'.\n", rc,
674                         QETH_CARD_IFNAME(card));
675         }
676         return rc;
677 }
678
679 int qeth_l3_setrouting_v6(struct qeth_card *card)
680 {
681         int rc = 0;
682
683         QETH_CARD_TEXT(card, 3, "setrtg6");
684 #ifdef CONFIG_QETH_IPV6
685
686         if (!qeth_is_supported(card, IPA_IPV6))
687                 return 0;
688         qeth_l3_correct_routing_type(card, &card->options.route6.type,
689                                   QETH_PROT_IPV6);
690
691         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
692                                   QETH_PROT_IPV6);
693         if (rc) {
694                 card->options.route6.type = NO_ROUTER;
695                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
696                         " on %s. Type set to 'no router'.\n", rc,
697                         QETH_CARD_IFNAME(card));
698         }
699 #endif
700         return rc;
701 }
702
703 /*
704  * IP address takeover related functions
705  */
706 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
707 {
708
709         struct qeth_ipato_entry *ipatoe, *tmp;
710         unsigned long flags;
711
712         spin_lock_irqsave(&card->ip_lock, flags);
713         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
714                 list_del(&ipatoe->entry);
715                 kfree(ipatoe);
716         }
717         spin_unlock_irqrestore(&card->ip_lock, flags);
718 }
719
720 int qeth_l3_add_ipato_entry(struct qeth_card *card,
721                                 struct qeth_ipato_entry *new)
722 {
723         struct qeth_ipato_entry *ipatoe;
724         unsigned long flags;
725         int rc = 0;
726
727         QETH_CARD_TEXT(card, 2, "addipato");
728         spin_lock_irqsave(&card->ip_lock, flags);
729         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
730                 if (ipatoe->proto != new->proto)
731                         continue;
732                 if (!memcmp(ipatoe->addr, new->addr,
733                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
734                     (ipatoe->mask_bits == new->mask_bits)) {
735                         rc = -EEXIST;
736                         break;
737                 }
738         }
739         if (!rc)
740                 list_add_tail(&new->entry, &card->ipato.entries);
741
742         spin_unlock_irqrestore(&card->ip_lock, flags);
743         return rc;
744 }
745
746 void qeth_l3_del_ipato_entry(struct qeth_card *card,
747                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
748 {
749         struct qeth_ipato_entry *ipatoe, *tmp;
750         unsigned long flags;
751
752         QETH_CARD_TEXT(card, 2, "delipato");
753         spin_lock_irqsave(&card->ip_lock, flags);
754         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
755                 if (ipatoe->proto != proto)
756                         continue;
757                 if (!memcmp(ipatoe->addr, addr,
758                             (proto == QETH_PROT_IPV4)? 4:16) &&
759                     (ipatoe->mask_bits == mask_bits)) {
760                         list_del(&ipatoe->entry);
761                         kfree(ipatoe);
762                 }
763         }
764         spin_unlock_irqrestore(&card->ip_lock, flags);
765 }
766
767 /*
768  * VIPA related functions
769  */
770 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
771               const u8 *addr)
772 {
773         struct qeth_ipaddr *ipaddr;
774         unsigned long flags;
775         int rc = 0;
776
777         ipaddr = qeth_l3_get_addr_buffer(proto);
778         if (ipaddr) {
779                 if (proto == QETH_PROT_IPV4) {
780                         QETH_CARD_TEXT(card, 2, "addvipa4");
781                         memcpy(&ipaddr->u.a4.addr, addr, 4);
782                         ipaddr->u.a4.mask = 0;
783                 } else if (proto == QETH_PROT_IPV6) {
784                         QETH_CARD_TEXT(card, 2, "addvipa6");
785                         memcpy(&ipaddr->u.a6.addr, addr, 16);
786                         ipaddr->u.a6.pfxlen = 0;
787                 }
788                 ipaddr->type = QETH_IP_TYPE_VIPA;
789                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
790                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
791         } else
792                 return -ENOMEM;
793         spin_lock_irqsave(&card->ip_lock, flags);
794         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
795             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
796                 rc = -EEXIST;
797         spin_unlock_irqrestore(&card->ip_lock, flags);
798         if (rc) {
799                 return rc;
800         }
801         if (!qeth_l3_add_ip(card, ipaddr))
802                 kfree(ipaddr);
803         qeth_l3_set_ip_addr_list(card);
804         return rc;
805 }
806
807 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
808               const u8 *addr)
809 {
810         struct qeth_ipaddr *ipaddr;
811
812         ipaddr = qeth_l3_get_addr_buffer(proto);
813         if (ipaddr) {
814                 if (proto == QETH_PROT_IPV4) {
815                         QETH_CARD_TEXT(card, 2, "delvipa4");
816                         memcpy(&ipaddr->u.a4.addr, addr, 4);
817                         ipaddr->u.a4.mask = 0;
818                 } else if (proto == QETH_PROT_IPV6) {
819                         QETH_CARD_TEXT(card, 2, "delvipa6");
820                         memcpy(&ipaddr->u.a6.addr, addr, 16);
821                         ipaddr->u.a6.pfxlen = 0;
822                 }
823                 ipaddr->type = QETH_IP_TYPE_VIPA;
824         } else
825                 return;
826         if (!qeth_l3_delete_ip(card, ipaddr))
827                 kfree(ipaddr);
828         qeth_l3_set_ip_addr_list(card);
829 }
830
831 /*
832  * proxy ARP related functions
833  */
834 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
835               const u8 *addr)
836 {
837         struct qeth_ipaddr *ipaddr;
838         unsigned long flags;
839         int rc = 0;
840
841         ipaddr = qeth_l3_get_addr_buffer(proto);
842         if (ipaddr) {
843                 if (proto == QETH_PROT_IPV4) {
844                         QETH_CARD_TEXT(card, 2, "addrxip4");
845                         memcpy(&ipaddr->u.a4.addr, addr, 4);
846                         ipaddr->u.a4.mask = 0;
847                 } else if (proto == QETH_PROT_IPV6) {
848                         QETH_CARD_TEXT(card, 2, "addrxip6");
849                         memcpy(&ipaddr->u.a6.addr, addr, 16);
850                         ipaddr->u.a6.pfxlen = 0;
851                 }
852                 ipaddr->type = QETH_IP_TYPE_RXIP;
853                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
854                 ipaddr->del_flags = 0;
855         } else
856                 return -ENOMEM;
857         spin_lock_irqsave(&card->ip_lock, flags);
858         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
859             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
860                 rc = -EEXIST;
861         spin_unlock_irqrestore(&card->ip_lock, flags);
862         if (rc) {
863                 return rc;
864         }
865         if (!qeth_l3_add_ip(card, ipaddr))
866                 kfree(ipaddr);
867         qeth_l3_set_ip_addr_list(card);
868         return 0;
869 }
870
871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
872                         const u8 *addr)
873 {
874         struct qeth_ipaddr *ipaddr;
875
876         ipaddr = qeth_l3_get_addr_buffer(proto);
877         if (ipaddr) {
878                 if (proto == QETH_PROT_IPV4) {
879                         QETH_CARD_TEXT(card, 2, "addrxip4");
880                         memcpy(&ipaddr->u.a4.addr, addr, 4);
881                         ipaddr->u.a4.mask = 0;
882                 } else if (proto == QETH_PROT_IPV6) {
883                         QETH_CARD_TEXT(card, 2, "addrxip6");
884                         memcpy(&ipaddr->u.a6.addr, addr, 16);
885                         ipaddr->u.a6.pfxlen = 0;
886                 }
887                 ipaddr->type = QETH_IP_TYPE_RXIP;
888         } else
889                 return;
890         if (!qeth_l3_delete_ip(card, ipaddr))
891                 kfree(ipaddr);
892         qeth_l3_set_ip_addr_list(card);
893 }
894
895 static int qeth_l3_register_addr_entry(struct qeth_card *card,
896                                 struct qeth_ipaddr *addr)
897 {
898         char buf[50];
899         int rc = 0;
900         int cnt = 3;
901
902         if (addr->proto == QETH_PROT_IPV4) {
903                 QETH_CARD_TEXT(card, 2, "setaddr4");
904                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
905         } else if (addr->proto == QETH_PROT_IPV6) {
906                 QETH_CARD_TEXT(card, 2, "setaddr6");
907                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
908                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
909         } else {
910                 QETH_CARD_TEXT(card, 2, "setaddr?");
911                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
912         }
913         do {
914                 if (addr->is_multicast)
915                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
916                 else
917                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
918                                         addr->set_flags);
919                 if (rc)
920                         QETH_CARD_TEXT(card, 2, "failed");
921         } while ((--cnt > 0) && rc);
922         if (rc) {
923                 QETH_CARD_TEXT(card, 2, "FAILED");
924                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
925                 dev_warn(&card->gdev->dev,
926                         "Registering IP address %s failed\n", buf);
927         }
928         return rc;
929 }
930
931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
932                                                 struct qeth_ipaddr *addr)
933 {
934         int rc = 0;
935
936         if (addr->proto == QETH_PROT_IPV4) {
937                 QETH_CARD_TEXT(card, 2, "deladdr4");
938                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
939         } else if (addr->proto == QETH_PROT_IPV6) {
940                 QETH_CARD_TEXT(card, 2, "deladdr6");
941                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
942                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
943         } else {
944                 QETH_CARD_TEXT(card, 2, "deladdr?");
945                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
946         }
947         if (addr->is_multicast)
948                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
949         else
950                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
951                                         addr->del_flags);
952         if (rc)
953                 QETH_CARD_TEXT(card, 2, "failed");
954
955         return rc;
956 }
957
958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
959 {
960         if (cast_type == RTN_MULTICAST)
961                 return QETH_CAST_MULTICAST;
962         if (cast_type == RTN_BROADCAST)
963                 return QETH_CAST_BROADCAST;
964         return QETH_CAST_UNICAST;
965 }
966
967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
968 {
969         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
970         if (cast_type == RTN_MULTICAST)
971                 return ct | QETH_CAST_MULTICAST;
972         if (cast_type == RTN_ANYCAST)
973                 return ct | QETH_CAST_ANYCAST;
974         if (cast_type == RTN_BROADCAST)
975                 return ct | QETH_CAST_BROADCAST;
976         return ct | QETH_CAST_UNICAST;
977 }
978
979 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
980                                         __u32 mode)
981 {
982         int rc;
983         struct qeth_cmd_buffer *iob;
984         struct qeth_ipa_cmd *cmd;
985
986         QETH_CARD_TEXT(card, 4, "adpmode");
987
988         iob = qeth_get_adapter_cmd(card, command,
989                                    sizeof(struct qeth_ipacmd_setadpparms));
990         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
991         cmd->data.setadapterparms.data.mode = mode;
992         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
993                                NULL);
994         return rc;
995 }
996
997 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
998 {
999         int rc;
1000
1001         QETH_CARD_TEXT(card, 4, "adphstr");
1002
1003         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1004                 rc = qeth_l3_send_setadp_mode(card,
1005                                         IPA_SETADP_SET_BROADCAST_MODE,
1006                                         card->options.broadcast_mode);
1007                 if (rc)
1008                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1009                                    "device %s: x%x\n",
1010                                    CARD_BUS_ID(card), rc);
1011                 rc = qeth_l3_send_setadp_mode(card,
1012                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1013                                         card->options.macaddr_mode);
1014                 if (rc)
1015                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1016                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1017                 return rc;
1018         }
1019         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1020                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1021                            "to set broadcast mode, using ALLRINGS "
1022                            "on device %s:\n", CARD_BUS_ID(card));
1023         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1024                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1025                            "to set macaddr mode, using NONCANONICAL "
1026                            "on device %s:\n", CARD_BUS_ID(card));
1027         return 0;
1028 }
1029
1030 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1031 {
1032         int rc;
1033
1034         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1035
1036         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1037                 dev_info(&card->gdev->dev,
1038                         "set adapter parameters not supported.\n");
1039                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1040                 return 0;
1041         }
1042         rc = qeth_query_setadapterparms(card);
1043         if (rc) {
1044                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1045                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1046                 return rc;
1047         }
1048         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1049                 rc = qeth_setadpparms_change_macaddr(card);
1050                 if (rc)
1051                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1052                                 " address failed\n");
1053         }
1054
1055         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1056             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1057                 rc = qeth_l3_setadapter_hstr(card);
1058
1059         return rc;
1060 }
1061
1062 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1063                         struct qeth_reply *reply, unsigned long data)
1064 {
1065         struct qeth_ipa_cmd *cmd;
1066
1067         QETH_CARD_TEXT(card, 4, "defadpcb");
1068
1069         cmd = (struct qeth_ipa_cmd *) data;
1070         if (cmd->hdr.return_code == 0) {
1071                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1072                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1073                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1074                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1075                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1076         }
1077         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1078             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1079                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1080                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1081         }
1082         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1083             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1084                 card->info.tx_csum_mask =
1085                         cmd->data.setassparms.data.flags_32bit;
1086                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1087         }
1088
1089         return 0;
1090 }
1091
1092 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1093         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1094         __u16 len, enum qeth_prot_versions prot)
1095 {
1096         struct qeth_cmd_buffer *iob;
1097         struct qeth_ipa_cmd *cmd;
1098
1099         QETH_CARD_TEXT(card, 4, "getasscm");
1100         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1101
1102         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1103         cmd->data.setassparms.hdr.assist_no = ipa_func;
1104         cmd->data.setassparms.hdr.length = 8 + len;
1105         cmd->data.setassparms.hdr.command_code = cmd_code;
1106         cmd->data.setassparms.hdr.return_code = 0;
1107         cmd->data.setassparms.hdr.seq_no = 0;
1108
1109         return iob;
1110 }
1111
1112 static int qeth_l3_send_setassparms(struct qeth_card *card,
1113         struct qeth_cmd_buffer *iob, __u16 len, long data,
1114         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1115                 unsigned long),
1116         void *reply_param)
1117 {
1118         int rc;
1119         struct qeth_ipa_cmd *cmd;
1120
1121         QETH_CARD_TEXT(card, 4, "sendassp");
1122
1123         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1124         if (len <= sizeof(__u32))
1125                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1126         else   /* (len > sizeof(__u32)) */
1127                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1128
1129         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1130         return rc;
1131 }
1132
1133 #ifdef CONFIG_QETH_IPV6
1134 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1135                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1136 {
1137         int rc;
1138         struct qeth_cmd_buffer *iob;
1139
1140         QETH_CARD_TEXT(card, 4, "simassp6");
1141         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1142                                        0, QETH_PROT_IPV6);
1143         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1144                                    qeth_l3_default_setassparms_cb, NULL);
1145         return rc;
1146 }
1147 #endif
1148
1149 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1150                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1151 {
1152         int rc;
1153         int length = 0;
1154         struct qeth_cmd_buffer *iob;
1155
1156         QETH_CARD_TEXT(card, 4, "simassp4");
1157         if (data)
1158                 length = sizeof(__u32);
1159         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1160                                        length, QETH_PROT_IPV4);
1161         rc = qeth_l3_send_setassparms(card, iob, length, data,
1162                                    qeth_l3_default_setassparms_cb, NULL);
1163         return rc;
1164 }
1165
1166 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1167 {
1168         int rc;
1169
1170         QETH_CARD_TEXT(card, 3, "ipaarp");
1171
1172         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1173                 dev_info(&card->gdev->dev,
1174                         "ARP processing not supported on %s!\n",
1175                         QETH_CARD_IFNAME(card));
1176                 return 0;
1177         }
1178         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1179                                         IPA_CMD_ASS_START, 0);
1180         if (rc) {
1181                 dev_warn(&card->gdev->dev,
1182                         "Starting ARP processing support for %s failed\n",
1183                         QETH_CARD_IFNAME(card));
1184         }
1185         return rc;
1186 }
1187
1188 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1189 {
1190         int rc;
1191
1192         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1193
1194         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1195                 dev_info(&card->gdev->dev,
1196                         "Hardware IP fragmentation not supported on %s\n",
1197                         QETH_CARD_IFNAME(card));
1198                 return  -EOPNOTSUPP;
1199         }
1200
1201         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1202                                           IPA_CMD_ASS_START, 0);
1203         if (rc) {
1204                 dev_warn(&card->gdev->dev,
1205                         "Starting IP fragmentation support for %s failed\n",
1206                         QETH_CARD_IFNAME(card));
1207         } else
1208                 dev_info(&card->gdev->dev,
1209                         "Hardware IP fragmentation enabled \n");
1210         return rc;
1211 }
1212
1213 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1214 {
1215         int rc;
1216
1217         QETH_CARD_TEXT(card, 3, "stsrcmac");
1218
1219         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1220                 dev_info(&card->gdev->dev,
1221                         "Inbound source MAC-address not supported on %s\n",
1222                         QETH_CARD_IFNAME(card));
1223                 return -EOPNOTSUPP;
1224         }
1225
1226         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1227                                           IPA_CMD_ASS_START, 0);
1228         if (rc)
1229                 dev_warn(&card->gdev->dev,
1230                         "Starting source MAC-address support for %s failed\n",
1231                         QETH_CARD_IFNAME(card));
1232         return rc;
1233 }
1234
1235 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1236 {
1237         int rc = 0;
1238
1239         QETH_CARD_TEXT(card, 3, "strtvlan");
1240
1241         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1242                 dev_info(&card->gdev->dev,
1243                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1244                 return -EOPNOTSUPP;
1245         }
1246
1247         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1248                                           IPA_CMD_ASS_START, 0);
1249         if (rc) {
1250                 dev_warn(&card->gdev->dev,
1251                         "Starting VLAN support for %s failed\n",
1252                         QETH_CARD_IFNAME(card));
1253         } else {
1254                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1255         }
1256         return rc;
1257 }
1258
1259 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1260 {
1261         int rc;
1262
1263         QETH_CARD_TEXT(card, 3, "stmcast");
1264
1265         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1266                 dev_info(&card->gdev->dev,
1267                         "Multicast not supported on %s\n",
1268                         QETH_CARD_IFNAME(card));
1269                 return -EOPNOTSUPP;
1270         }
1271
1272         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1273                                           IPA_CMD_ASS_START, 0);
1274         if (rc) {
1275                 dev_warn(&card->gdev->dev,
1276                         "Starting multicast support for %s failed\n",
1277                         QETH_CARD_IFNAME(card));
1278         } else {
1279                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1280                 card->dev->flags |= IFF_MULTICAST;
1281         }
1282         return rc;
1283 }
1284
1285 #ifdef CONFIG_QETH_IPV6
1286 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1287 {
1288         int rc;
1289
1290         QETH_CARD_TEXT(card, 3, "softipv6");
1291
1292         if (card->info.type == QETH_CARD_TYPE_IQD)
1293                 goto out;
1294
1295         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1296         if (rc) {
1297                 dev_err(&card->gdev->dev,
1298                         "Activating IPv6 support for %s failed\n",
1299                         QETH_CARD_IFNAME(card));
1300                 return rc;
1301         }
1302         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1303                                           IPA_CMD_ASS_START, 3);
1304         if (rc) {
1305                 dev_err(&card->gdev->dev,
1306                         "Activating IPv6 support for %s failed\n",
1307                         QETH_CARD_IFNAME(card));
1308                 return rc;
1309         }
1310         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1311                                                IPA_CMD_ASS_START);
1312         if (rc) {
1313                 dev_err(&card->gdev->dev,
1314                         "Activating IPv6 support for %s failed\n",
1315                          QETH_CARD_IFNAME(card));
1316                 return rc;
1317         }
1318         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1319                                                IPA_CMD_ASS_START);
1320         if (rc) {
1321                 dev_warn(&card->gdev->dev,
1322                         "Enabling the passthrough mode for %s failed\n",
1323                         QETH_CARD_IFNAME(card));
1324                 return rc;
1325         }
1326 out:
1327         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1328         return 0;
1329 }
1330 #endif
1331
1332 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1333 {
1334         int rc = 0;
1335
1336         QETH_CARD_TEXT(card, 3, "strtipv6");
1337
1338         if (!qeth_is_supported(card, IPA_IPV6)) {
1339                 dev_info(&card->gdev->dev,
1340                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1341                 return 0;
1342         }
1343 #ifdef CONFIG_QETH_IPV6
1344         rc = qeth_l3_softsetup_ipv6(card);
1345 #endif
1346         return rc ;
1347 }
1348
1349 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1350 {
1351         int rc;
1352
1353         QETH_CARD_TEXT(card, 3, "stbrdcst");
1354         card->info.broadcast_capable = 0;
1355         if (!qeth_is_supported(card, IPA_FILTERING)) {
1356                 dev_info(&card->gdev->dev,
1357                         "Broadcast not supported on %s\n",
1358                         QETH_CARD_IFNAME(card));
1359                 rc = -EOPNOTSUPP;
1360                 goto out;
1361         }
1362         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1363                                           IPA_CMD_ASS_START, 0);
1364         if (rc) {
1365                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1366                         "%s failed\n", QETH_CARD_IFNAME(card));
1367                 goto out;
1368         }
1369
1370         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1371                                           IPA_CMD_ASS_CONFIGURE, 1);
1372         if (rc) {
1373                 dev_warn(&card->gdev->dev,
1374                         "Setting up broadcast filtering for %s failed\n",
1375                         QETH_CARD_IFNAME(card));
1376                 goto out;
1377         }
1378         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1379         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1380         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1381                                           IPA_CMD_ASS_ENABLE, 1);
1382         if (rc) {
1383                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1384                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1385                 goto out;
1386         }
1387         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1388 out:
1389         if (card->info.broadcast_capable)
1390                 card->dev->flags |= IFF_BROADCAST;
1391         else
1392                 card->dev->flags &= ~IFF_BROADCAST;
1393         return rc;
1394 }
1395
1396 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1397 {
1398         int rc;
1399
1400         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1401                                           IPA_CMD_ASS_START, 0);
1402         if (rc) {
1403                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1404                         "failed, using SW checksumming\n",
1405                         QETH_CARD_IFNAME(card));
1406                 return rc;
1407         }
1408         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1409                                           IPA_CMD_ASS_ENABLE,
1410                                           card->info.csum_mask);
1411         if (rc) {
1412                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1413                         "failed, using SW checksumming\n",
1414                         QETH_CARD_IFNAME(card));
1415                 return rc;
1416         }
1417         return 0;
1418 }
1419
1420 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1421 {
1422         int rc = 0;
1423
1424         if (on) {
1425                 rc = qeth_l3_send_checksum_command(card);
1426                 if (rc)
1427                         return -EIO;
1428                 dev_info(&card->gdev->dev,
1429                         "HW Checksumming (inbound) enabled\n");
1430         } else {
1431                 rc = qeth_l3_send_simple_setassparms(card,
1432                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1433                 if (rc)
1434                         return -EIO;
1435         }
1436
1437         return 0;
1438 }
1439
1440 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1441 {
1442         QETH_CARD_TEXT(card, 3, "strtcsum");
1443
1444         if (card->dev->features & NETIF_F_RXCSUM) {
1445                 rtnl_lock();
1446                 /* force set_features call */
1447                 card->dev->features &= ~NETIF_F_RXCSUM;
1448                 netdev_update_features(card->dev);
1449                 rtnl_unlock();
1450         }
1451         return 0;
1452 }
1453
1454 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1455 {
1456         int rc = 0;
1457
1458         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1459                 return rc;
1460         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1461                           IPA_CMD_ASS_START, 0);
1462         if (rc)
1463                 goto err_out;
1464         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1465                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1466         if (rc)
1467                 goto err_out;
1468         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1469         return rc;
1470 err_out:
1471         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1472                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1473         return rc;
1474 }
1475
1476 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1477 {
1478         int rc;
1479
1480         QETH_CARD_TEXT(card, 3, "sttso");
1481
1482         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1483                 dev_info(&card->gdev->dev,
1484                         "Outbound TSO not supported on %s\n",
1485                         QETH_CARD_IFNAME(card));
1486                 rc = -EOPNOTSUPP;
1487         } else {
1488                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1489                                                 IPA_CMD_ASS_START, 0);
1490                 if (rc)
1491                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1492                                 "segmentation offload for %s failed\n",
1493                                 QETH_CARD_IFNAME(card));
1494                 else
1495                         dev_info(&card->gdev->dev,
1496                                 "Outbound TSO enabled\n");
1497         }
1498         if (rc)
1499                 card->dev->features &= ~NETIF_F_TSO;
1500         return rc;
1501 }
1502
1503 static int qeth_l3_start_ipassists(struct qeth_card *card)
1504 {
1505         QETH_CARD_TEXT(card, 3, "strtipas");
1506
1507         qeth_set_access_ctrl_online(card);      /* go on*/
1508         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1509         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1510         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1511         qeth_l3_start_ipa_vlan(card);           /* go on*/
1512         qeth_l3_start_ipa_multicast(card);              /* go on*/
1513         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1514         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1515         qeth_l3_start_ipa_checksum(card);               /* go on*/
1516         qeth_l3_start_ipa_tx_checksum(card);
1517         qeth_l3_start_ipa_tso(card);            /* go on*/
1518         return 0;
1519 }
1520
1521 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1522                 struct qeth_reply *reply, unsigned long data)
1523 {
1524         struct qeth_ipa_cmd *cmd;
1525
1526         cmd = (struct qeth_ipa_cmd *) data;
1527         if (cmd->hdr.return_code == 0)
1528                 memcpy(card->dev->dev_addr,
1529                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1530         else
1531                 random_ether_addr(card->dev->dev_addr);
1532
1533         return 0;
1534 }
1535
1536 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1537 {
1538         int rc = 0;
1539         struct qeth_cmd_buffer *iob;
1540         struct qeth_ipa_cmd *cmd;
1541
1542         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1543
1544         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1545                                      QETH_PROT_IPV6);
1546         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1547         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1548                         card->info.unique_id;
1549
1550         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1551                                 NULL);
1552         return rc;
1553 }
1554
1555 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1556                 struct qeth_reply *reply, unsigned long data)
1557 {
1558         struct qeth_ipa_cmd *cmd;
1559
1560         cmd = (struct qeth_ipa_cmd *) data;
1561         if (cmd->hdr.return_code == 0)
1562                 card->info.unique_id = *((__u16 *)
1563                                 &cmd->data.create_destroy_addr.unique_id[6]);
1564         else {
1565                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1566                                         UNIQUE_ID_NOT_BY_CARD;
1567                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1568                         "generate a unique ID\n");
1569         }
1570         return 0;
1571 }
1572
1573 static int qeth_l3_get_unique_id(struct qeth_card *card)
1574 {
1575         int rc = 0;
1576         struct qeth_cmd_buffer *iob;
1577         struct qeth_ipa_cmd *cmd;
1578
1579         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1580
1581         if (!qeth_is_supported(card, IPA_IPV6)) {
1582                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1583                                         UNIQUE_ID_NOT_BY_CARD;
1584                 return 0;
1585         }
1586
1587         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1588                                      QETH_PROT_IPV6);
1589         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1590         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1591                         card->info.unique_id;
1592
1593         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1594         return rc;
1595 }
1596
1597 static int
1598 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1599                             unsigned long data)
1600 {
1601         struct qeth_ipa_cmd        *cmd;
1602         __u16 rc;
1603
1604         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1605
1606         cmd = (struct qeth_ipa_cmd *)data;
1607         rc = cmd->hdr.return_code;
1608         if (rc)
1609                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1610         switch (cmd->data.diagass.action) {
1611         case QETH_DIAGS_CMD_TRACE_QUERY:
1612                 break;
1613         case QETH_DIAGS_CMD_TRACE_DISABLE:
1614                 switch (rc) {
1615                 case 0:
1616                 case IPA_RC_INVALID_SUBCMD:
1617                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1618                         dev_info(&card->gdev->dev, "The HiperSockets network "
1619                                 "traffic analyzer is deactivated\n");
1620                         break;
1621                 default:
1622                         break;
1623                 }
1624                 break;
1625         case QETH_DIAGS_CMD_TRACE_ENABLE:
1626                 switch (rc) {
1627                 case 0:
1628                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1629                         dev_info(&card->gdev->dev, "The HiperSockets network "
1630                                 "traffic analyzer is activated\n");
1631                         break;
1632                 case IPA_RC_HARDWARE_AUTH_ERROR:
1633                         dev_warn(&card->gdev->dev, "The device is not "
1634                                 "authorized to run as a HiperSockets network "
1635                                 "traffic analyzer\n");
1636                         break;
1637                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1638                         dev_warn(&card->gdev->dev, "A HiperSockets "
1639                                 "network traffic analyzer is already "
1640                                 "active in the HiperSockets LAN\n");
1641                         break;
1642                 default:
1643                         break;
1644                 }
1645                 break;
1646         default:
1647                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1648                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1649         }
1650
1651         return 0;
1652 }
1653
1654 static int
1655 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1656 {
1657         struct qeth_cmd_buffer *iob;
1658         struct qeth_ipa_cmd    *cmd;
1659
1660         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1661
1662         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1663         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1664         cmd->data.diagass.subcmd_len = 16;
1665         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1666         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1667         cmd->data.diagass.action = diags_cmd;
1668         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1669 }
1670
1671 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1672                                 struct net_device *dev)
1673 {
1674         if (dev->type == ARPHRD_IEEE802_TR)
1675                 ip_tr_mc_map(ipm, mac);
1676         else
1677                 ip_eth_mc_map(ipm, mac);
1678 }
1679
1680 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1681 {
1682         struct qeth_ipaddr *ipm;
1683         struct ip_mc_list *im4;
1684         char buf[MAX_ADDR_LEN];
1685
1686         QETH_CARD_TEXT(card, 4, "addmc");
1687         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1688              im4 = rcu_dereference(im4->next_rcu)) {
1689                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1690                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1691                 if (!ipm)
1692                         continue;
1693                 ipm->u.a4.addr = im4->multiaddr;
1694                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1695                 ipm->is_multicast = 1;
1696                 if (!qeth_l3_add_ip(card, ipm))
1697                         kfree(ipm);
1698         }
1699 }
1700
1701 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1702 {
1703         struct in_device *in_dev;
1704         u16 vid;
1705
1706         QETH_CARD_TEXT(card, 4, "addmcvl");
1707         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1708                 return;
1709
1710         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1711                 struct net_device *netdev;
1712
1713                 rcu_read_lock();
1714                 netdev = __vlan_find_dev_deep(card->dev, vid);
1715                 rcu_read_unlock();
1716                 if (netdev == NULL ||
1717                     !(netdev->flags & IFF_UP))
1718                         continue;
1719                 in_dev = in_dev_get(netdev);
1720                 if (!in_dev)
1721                         continue;
1722                 rcu_read_lock();
1723                 qeth_l3_add_mc(card, in_dev);
1724                 rcu_read_unlock();
1725                 in_dev_put(in_dev);
1726         }
1727 }
1728
1729 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1730 {
1731         struct in_device *in4_dev;
1732
1733         QETH_CARD_TEXT(card, 4, "chkmcv4");
1734         in4_dev = in_dev_get(card->dev);
1735         if (in4_dev == NULL)
1736                 return;
1737         rcu_read_lock();
1738         qeth_l3_add_mc(card, in4_dev);
1739         qeth_l3_add_vlan_mc(card);
1740         rcu_read_unlock();
1741         in_dev_put(in4_dev);
1742 }
1743
1744 #ifdef CONFIG_QETH_IPV6
1745 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1746 {
1747         struct qeth_ipaddr *ipm;
1748         struct ifmcaddr6 *im6;
1749         char buf[MAX_ADDR_LEN];
1750
1751         QETH_CARD_TEXT(card, 4, "addmc6");
1752         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1753                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1754                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1755                 if (!ipm)
1756                         continue;
1757                 ipm->is_multicast = 1;
1758                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1759                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1760                        sizeof(struct in6_addr));
1761                 if (!qeth_l3_add_ip(card, ipm))
1762                         kfree(ipm);
1763         }
1764 }
1765
1766 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1767 {
1768         struct inet6_dev *in_dev;
1769         u16 vid;
1770
1771         QETH_CARD_TEXT(card, 4, "admc6vl");
1772         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1773                 return;
1774
1775         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1776                 struct net_device *netdev;
1777
1778                 netdev = __vlan_find_dev_deep(card->dev, vid);
1779                 if (netdev == NULL ||
1780                     !(netdev->flags & IFF_UP))
1781                         continue;
1782                 in_dev = in6_dev_get(netdev);
1783                 if (!in_dev)
1784                         continue;
1785                 read_lock_bh(&in_dev->lock);
1786                 qeth_l3_add_mc6(card, in_dev);
1787                 read_unlock_bh(&in_dev->lock);
1788                 in6_dev_put(in_dev);
1789         }
1790 }
1791
1792 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1793 {
1794         struct inet6_dev *in6_dev;
1795
1796         QETH_CARD_TEXT(card, 4, "chkmcv6");
1797         if (!qeth_is_supported(card, IPA_IPV6))
1798                 return ;
1799         in6_dev = in6_dev_get(card->dev);
1800         if (in6_dev == NULL)
1801                 return;
1802         read_lock_bh(&in6_dev->lock);
1803         qeth_l3_add_mc6(card, in6_dev);
1804         qeth_l3_add_vlan_mc6(card);
1805         read_unlock_bh(&in6_dev->lock);
1806         in6_dev_put(in6_dev);
1807 }
1808 #endif /* CONFIG_QETH_IPV6 */
1809
1810 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1811                         unsigned short vid)
1812 {
1813         struct in_device *in_dev;
1814         struct in_ifaddr *ifa;
1815         struct qeth_ipaddr *addr;
1816         struct net_device *netdev;
1817
1818         QETH_CARD_TEXT(card, 4, "frvaddr4");
1819
1820         netdev = __vlan_find_dev_deep(card->dev, vid);
1821         in_dev = in_dev_get(netdev);
1822         if (!in_dev)
1823                 return;
1824         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1825                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1826                 if (addr) {
1827                         addr->u.a4.addr = ifa->ifa_address;
1828                         addr->u.a4.mask = ifa->ifa_mask;
1829                         addr->type = QETH_IP_TYPE_NORMAL;
1830                         if (!qeth_l3_delete_ip(card, addr))
1831                                 kfree(addr);
1832                 }
1833         }
1834         in_dev_put(in_dev);
1835 }
1836
1837 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1838                         unsigned short vid)
1839 {
1840 #ifdef CONFIG_QETH_IPV6
1841         struct inet6_dev *in6_dev;
1842         struct inet6_ifaddr *ifa;
1843         struct qeth_ipaddr *addr;
1844         struct net_device *netdev;
1845
1846         QETH_CARD_TEXT(card, 4, "frvaddr6");
1847
1848         netdev = __vlan_find_dev_deep(card->dev, vid);
1849         in6_dev = in6_dev_get(netdev);
1850         if (!in6_dev)
1851                 return;
1852         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1853                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1854                 if (addr) {
1855                         memcpy(&addr->u.a6.addr, &ifa->addr,
1856                                sizeof(struct in6_addr));
1857                         addr->u.a6.pfxlen = ifa->prefix_len;
1858                         addr->type = QETH_IP_TYPE_NORMAL;
1859                         if (!qeth_l3_delete_ip(card, addr))
1860                                 kfree(addr);
1861                 }
1862         }
1863         in6_dev_put(in6_dev);
1864 #endif /* CONFIG_QETH_IPV6 */
1865 }
1866
1867 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1868                         unsigned short vid)
1869 {
1870         qeth_l3_free_vlan_addresses4(card, vid);
1871         qeth_l3_free_vlan_addresses6(card, vid);
1872 }
1873
1874 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1875 {
1876         struct qeth_card *card = dev->ml_priv;
1877
1878         set_bit(vid, card->active_vlans);
1879         return 0;
1880 }
1881
1882 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1883 {
1884         struct qeth_card *card = dev->ml_priv;
1885         unsigned long flags;
1886
1887         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1888         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1889                 QETH_CARD_TEXT(card, 3, "kidREC");
1890                 return 0;
1891         }
1892         spin_lock_irqsave(&card->vlanlock, flags);
1893         /* unregister IP addresses of vlan device */
1894         qeth_l3_free_vlan_addresses(card, vid);
1895         clear_bit(vid, card->active_vlans);
1896         spin_unlock_irqrestore(&card->vlanlock, flags);
1897         qeth_l3_set_multicast_list(card->dev);
1898         return 0;
1899 }
1900
1901 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1902                         struct sk_buff *skb, struct qeth_hdr *hdr,
1903                         unsigned short *vlan_id)
1904 {
1905         __be16 prot;
1906         struct iphdr *ip_hdr;
1907         unsigned char tg_addr[MAX_ADDR_LEN];
1908         int is_vlan = 0;
1909
1910         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1911                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1912                               ETH_P_IP);
1913                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1914                 case QETH_CAST_MULTICAST:
1915                         switch (prot) {
1916 #ifdef CONFIG_QETH_IPV6
1917                         case __constant_htons(ETH_P_IPV6):
1918                                 ndisc_mc_map((struct in6_addr *)
1919                                      skb->data + 24,
1920                                      tg_addr, card->dev, 0);
1921                                 break;
1922 #endif
1923                         case __constant_htons(ETH_P_IP):
1924                                 ip_hdr = (struct iphdr *)skb->data;
1925                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1926                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1927                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1928                                 break;
1929                         default:
1930                                 memcpy(tg_addr, card->dev->broadcast,
1931                                         card->dev->addr_len);
1932                         }
1933                         card->stats.multicast++;
1934                         skb->pkt_type = PACKET_MULTICAST;
1935                         break;
1936                 case QETH_CAST_BROADCAST:
1937                         memcpy(tg_addr, card->dev->broadcast,
1938                                 card->dev->addr_len);
1939                         card->stats.multicast++;
1940                         skb->pkt_type = PACKET_BROADCAST;
1941                         break;
1942                 case QETH_CAST_UNICAST:
1943                 case QETH_CAST_ANYCAST:
1944                 case QETH_CAST_NOCAST:
1945                 default:
1946                         if (card->options.sniffer)
1947                                 skb->pkt_type = PACKET_OTHERHOST;
1948                         else
1949                                 skb->pkt_type = PACKET_HOST;
1950                         memcpy(tg_addr, card->dev->dev_addr,
1951                                 card->dev->addr_len);
1952                 }
1953                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1954                         card->dev->header_ops->create(skb, card->dev, prot,
1955                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1956                                 card->dev->addr_len);
1957                 else
1958                         card->dev->header_ops->create(skb, card->dev, prot,
1959                                 tg_addr, "FAKELL", card->dev->addr_len);
1960         }
1961
1962 #ifdef CONFIG_TR
1963         if (card->dev->type == ARPHRD_IEEE802_TR)
1964                 skb->protocol = tr_type_trans(skb, card->dev);
1965         else
1966 #endif
1967                 skb->protocol = eth_type_trans(skb, card->dev);
1968
1969         if (hdr->hdr.l3.ext_flags &
1970             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1971                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1972                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1973                 is_vlan = 1;
1974         }
1975
1976         if (card->dev->features & NETIF_F_RXCSUM) {
1977                 if ((hdr->hdr.l3.ext_flags &
1978                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1979                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1980                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1981                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1982                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1983                 else
1984                         skb->ip_summed = CHECKSUM_NONE;
1985         } else
1986                 skb->ip_summed = CHECKSUM_NONE;
1987
1988         return is_vlan;
1989 }
1990
1991 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1992                                 int budget, int *done)
1993 {
1994         int work_done = 0;
1995         struct sk_buff *skb;
1996         struct qeth_hdr *hdr;
1997         __u16 vlan_tag = 0;
1998         int is_vlan;
1999         unsigned int len;
2000         __u16 magic;
2001
2002         *done = 0;
2003         BUG_ON(!budget);
2004         while (budget) {
2005                 skb = qeth_core_get_next_skb(card,
2006                         &card->qdio.in_q->bufs[card->rx.b_index],
2007                         &card->rx.b_element, &card->rx.e_offset, &hdr);
2008                 if (!skb) {
2009                         *done = 1;
2010                         break;
2011                 }
2012                 skb->dev = card->dev;
2013                 switch (hdr->hdr.l3.id) {
2014                 case QETH_HEADER_TYPE_LAYER3:
2015                         magic = *(__u16 *)skb->data;
2016                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2017                             (magic == ETH_P_AF_IUCV)) {
2018                                 skb->protocol = ETH_P_AF_IUCV;
2019                                 skb->pkt_type = PACKET_HOST;
2020                                 skb->mac_header = NET_SKB_PAD;
2021                                 skb->dev = card->dev;
2022                                 len = skb->len;
2023                                 card->dev->header_ops->create(skb, card->dev, 0,
2024                                         card->dev->dev_addr, "FAKELL",
2025                                         card->dev->addr_len);
2026                                 netif_receive_skb(skb);
2027                         } else {
2028                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2029                                                       &vlan_tag);
2030                                 len = skb->len;
2031                                 if (is_vlan && !card->options.sniffer)
2032                                         __vlan_hwaccel_put_tag(skb, vlan_tag);
2033                                 napi_gro_receive(&card->napi, skb);
2034                         }
2035                         break;
2036                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2037                         skb->pkt_type = PACKET_HOST;
2038                         skb->protocol = eth_type_trans(skb, skb->dev);
2039                         len = skb->len;
2040                         netif_receive_skb(skb);
2041                         break;
2042                 default:
2043                         dev_kfree_skb_any(skb);
2044                         QETH_CARD_TEXT(card, 3, "inbunkno");
2045                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2046                         continue;
2047                 }
2048                 work_done++;
2049                 budget--;
2050                 card->stats.rx_packets++;
2051                 card->stats.rx_bytes += len;
2052         }
2053         return work_done;
2054 }
2055
2056 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2057 {
2058         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2059         int work_done = 0;
2060         struct qeth_qdio_buffer *buffer;
2061         int done;
2062         int new_budget = budget;
2063
2064         if (card->options.performance_stats) {
2065                 card->perf_stats.inbound_cnt++;
2066                 card->perf_stats.inbound_start_time = qeth_get_micros();
2067         }
2068
2069         while (1) {
2070                 if (!card->rx.b_count) {
2071                         card->rx.qdio_err = 0;
2072                         card->rx.b_count = qdio_get_next_buffers(
2073                                 card->data.ccwdev, 0, &card->rx.b_index,
2074                                 &card->rx.qdio_err);
2075                         if (card->rx.b_count <= 0) {
2076                                 card->rx.b_count = 0;
2077                                 break;
2078                         }
2079                         card->rx.b_element =
2080                                 &card->qdio.in_q->bufs[card->rx.b_index]
2081                                 .buffer->element[0];
2082                         card->rx.e_offset = 0;
2083                 }
2084
2085                 while (card->rx.b_count) {
2086                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2087                         if (!(card->rx.qdio_err &&
2088                             qeth_check_qdio_errors(card, buffer->buffer,
2089                             card->rx.qdio_err, "qinerr")))
2090                                 work_done += qeth_l3_process_inbound_buffer(
2091                                         card, new_budget, &done);
2092                         else
2093                                 done = 1;
2094
2095                         if (done) {
2096                                 if (card->options.performance_stats)
2097                                         card->perf_stats.bufs_rec++;
2098                                 qeth_put_buffer_pool_entry(card,
2099                                         buffer->pool_entry);
2100                                 qeth_queue_input_buffer(card, card->rx.b_index);
2101                                 card->rx.b_count--;
2102                                 if (card->rx.b_count) {
2103                                         card->rx.b_index =
2104                                                 (card->rx.b_index + 1) %
2105                                                 QDIO_MAX_BUFFERS_PER_Q;
2106                                         card->rx.b_element =
2107                                                 &card->qdio.in_q
2108                                                 ->bufs[card->rx.b_index]
2109                                                 .buffer->element[0];
2110                                         card->rx.e_offset = 0;
2111                                 }
2112                         }
2113
2114                         if (work_done >= budget)
2115                                 goto out;
2116                         else
2117                                 new_budget = budget - work_done;
2118                 }
2119         }
2120
2121         napi_complete(napi);
2122         if (qdio_start_irq(card->data.ccwdev, 0))
2123                 napi_schedule(&card->napi);
2124 out:
2125         if (card->options.performance_stats)
2126                 card->perf_stats.inbound_time += qeth_get_micros() -
2127                         card->perf_stats.inbound_start_time;
2128         return work_done;
2129 }
2130
2131 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2132                         struct qeth_card *card)
2133 {
2134         int rc = 0;
2135         u16 vid;
2136
2137         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2138                 struct net_device *netdev;
2139
2140                 rcu_read_lock();
2141                 netdev = __vlan_find_dev_deep(dev, vid);
2142                 rcu_read_unlock();
2143                 if (netdev == dev) {
2144                         rc = QETH_VLAN_CARD;
2145                         break;
2146                 }
2147         }
2148
2149         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2150                 return 0;
2151
2152         return rc;
2153 }
2154
2155 static int qeth_l3_verify_dev(struct net_device *dev)
2156 {
2157         struct qeth_card *card;
2158         unsigned long flags;
2159         int rc = 0;
2160
2161         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2162         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2163                 if (card->dev == dev) {
2164                         rc = QETH_REAL_CARD;
2165                         break;
2166                 }
2167                 rc = qeth_l3_verify_vlan_dev(dev, card);
2168                 if (rc)
2169                         break;
2170         }
2171         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2172
2173         return rc;
2174 }
2175
2176 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2177 {
2178         struct qeth_card *card = NULL;
2179         int rc;
2180
2181         rc = qeth_l3_verify_dev(dev);
2182         if (rc == QETH_REAL_CARD)
2183                 card = dev->ml_priv;
2184         else if (rc == QETH_VLAN_CARD)
2185                 card = vlan_dev_real_dev(dev)->ml_priv;
2186         if (card && card->options.layer2)
2187                 card = NULL;
2188         if (card)
2189                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2190         return card ;
2191 }
2192
2193 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2194 {
2195         int rc = 0;
2196
2197         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2198         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2199
2200         qeth_set_allowed_threads(card, 0, 1);
2201         if (card->options.sniffer &&
2202             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2203                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2204         if (card->read.state == CH_STATE_UP &&
2205             card->write.state == CH_STATE_UP &&
2206             (card->state == CARD_STATE_UP)) {
2207                 if (recovery_mode)
2208                         qeth_l3_stop(card->dev);
2209                 else {
2210                         rtnl_lock();
2211                         dev_close(card->dev);
2212                         rtnl_unlock();
2213                 }
2214                 card->state = CARD_STATE_SOFTSETUP;
2215         }
2216         if (card->state == CARD_STATE_SOFTSETUP) {
2217                 qeth_l3_clear_ip_list(card, 1);
2218                 qeth_clear_ipacmd_list(card);
2219                 card->state = CARD_STATE_HARDSETUP;
2220         }
2221         if (card->state == CARD_STATE_HARDSETUP) {
2222                 qeth_qdio_clear_card(card, 0);
2223                 qeth_clear_qdio_buffers(card);
2224                 qeth_clear_working_pool_list(card);
2225                 card->state = CARD_STATE_DOWN;
2226         }
2227         if (card->state == CARD_STATE_DOWN) {
2228                 qeth_clear_cmd_buffers(&card->read);
2229                 qeth_clear_cmd_buffers(&card->write);
2230         }
2231         return rc;
2232 }
2233
2234 /*
2235  * test for and Switch promiscuous mode (on or off)
2236  *  either for guestlan or HiperSocket Sniffer
2237  */
2238 static void
2239 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2240 {
2241         struct net_device *dev = card->dev;
2242
2243         if (((dev->flags & IFF_PROMISC) &&
2244              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2245             (!(dev->flags & IFF_PROMISC) &&
2246              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2247                 return;
2248
2249         if (card->info.guestlan) {              /* Guestlan trace */
2250                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2251                         qeth_setadp_promisc_mode(card);
2252         } else if (card->options.sniffer &&     /* HiperSockets trace */
2253                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2254                 if (dev->flags & IFF_PROMISC) {
2255                         QETH_CARD_TEXT(card, 3, "+promisc");
2256                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2257                 } else {
2258                         QETH_CARD_TEXT(card, 3, "-promisc");
2259                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2260                 }
2261         }
2262 }
2263
2264 static void qeth_l3_set_multicast_list(struct net_device *dev)
2265 {
2266         struct qeth_card *card = dev->ml_priv;
2267
2268         QETH_CARD_TEXT(card, 3, "setmulti");
2269         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2270             (card->state != CARD_STATE_UP))
2271                 return;
2272         if (!card->options.sniffer) {
2273                 qeth_l3_delete_mc_addresses(card);
2274                 qeth_l3_add_multicast_ipv4(card);
2275 #ifdef CONFIG_QETH_IPV6
2276                 qeth_l3_add_multicast_ipv6(card);
2277 #endif
2278                 qeth_l3_set_ip_addr_list(card);
2279                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2280                         return;
2281         }
2282         qeth_l3_handle_promisc_mode(card);
2283 }
2284
2285 static const char *qeth_l3_arp_get_error_cause(int *rc)
2286 {
2287         switch (*rc) {
2288         case QETH_IPA_ARP_RC_FAILED:
2289                 *rc = -EIO;
2290                 return "operation failed";
2291         case QETH_IPA_ARP_RC_NOTSUPP:
2292                 *rc = -EOPNOTSUPP;
2293                 return "operation not supported";
2294         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2295                 *rc = -EINVAL;
2296                 return "argument out of range";
2297         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2298                 *rc = -EOPNOTSUPP;
2299                 return "query operation not supported";
2300         case QETH_IPA_ARP_RC_Q_NO_DATA:
2301                 *rc = -ENOENT;
2302                 return "no query data available";
2303         default:
2304                 return "unknown error";
2305         }
2306 }
2307
2308 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2309 {
2310         int tmp;
2311         int rc;
2312
2313         QETH_CARD_TEXT(card, 3, "arpstnoe");
2314
2315         /*
2316          * currently GuestLAN only supports the ARP assist function
2317          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2318          * thus we say EOPNOTSUPP for this ARP function
2319          */
2320         if (card->info.guestlan)
2321                 return -EOPNOTSUPP;
2322         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2323                 return -EOPNOTSUPP;
2324         }
2325         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2326                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2327                                           no_entries);
2328         if (rc) {
2329                 tmp = rc;
2330                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2331                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2332                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2333         }
2334         return rc;
2335 }
2336
2337 static __u32 get_arp_entry_size(struct qeth_card *card,
2338                         struct qeth_arp_query_data *qdata,
2339                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2340 {
2341         __u32 rc;
2342         __u8 is_hsi;
2343
2344         is_hsi = qdata->reply_bits == 5;
2345         if (type->ip == QETHARP_IP_ADDR_V4) {
2346                 QETH_CARD_TEXT(card, 4, "arpev4");
2347                 if (strip_entries) {
2348                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2349                                 sizeof(struct qeth_arp_qi_entry7_short);
2350                 } else {
2351                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2352                                 sizeof(struct qeth_arp_qi_entry7);
2353                 }
2354         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2355                 QETH_CARD_TEXT(card, 4, "arpev6");
2356                 if (strip_entries) {
2357                         rc = is_hsi ?
2358                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2359                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2360                 } else {
2361                         rc = is_hsi ?
2362                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2363                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2364                 }
2365         } else {
2366                 QETH_CARD_TEXT(card, 4, "arpinv");
2367                 rc = 0;
2368         }
2369
2370         return rc;
2371 }
2372
2373 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2374 {
2375         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2376                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2377 }
2378
2379 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2380                 struct qeth_reply *reply, unsigned long data)
2381 {
2382         struct qeth_ipa_cmd *cmd;
2383         struct qeth_arp_query_data *qdata;
2384         struct qeth_arp_query_info *qinfo;
2385         int i;
2386         int e;
2387         int entrybytes_done;
2388         int stripped_bytes;
2389         __u8 do_strip_entries;
2390
2391         QETH_CARD_TEXT(card, 3, "arpquecb");
2392
2393         qinfo = (struct qeth_arp_query_info *) reply->param;
2394         cmd = (struct qeth_ipa_cmd *) data;
2395         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2396         if (cmd->hdr.return_code) {
2397                 QETH_CARD_TEXT(card, 4, "arpcberr");
2398                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2399                 return 0;
2400         }
2401         if (cmd->data.setassparms.hdr.return_code) {
2402                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2403                 QETH_CARD_TEXT(card, 4, "setaperr");
2404                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2405                 return 0;
2406         }
2407         qdata = &cmd->data.setassparms.data.query_arp;
2408         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2409
2410         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2411         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2412         entrybytes_done = 0;
2413         for (e = 0; e < qdata->no_entries; ++e) {
2414                 char *cur_entry;
2415                 __u32 esize;
2416                 struct qeth_arp_entrytype *etype;
2417
2418                 cur_entry = &qdata->data + entrybytes_done;
2419                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2420                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2421                         QETH_CARD_TEXT(card, 4, "pmis");
2422                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2423                         break;
2424                 }
2425                 esize = get_arp_entry_size(card, qdata, etype,
2426                         do_strip_entries);
2427                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2428                 if (!esize)
2429                         break;
2430
2431                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2432                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2433                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2434                         goto out_error;
2435                 }
2436
2437                 memcpy(qinfo->udata + qinfo->udata_offset,
2438                         &qdata->data + entrybytes_done + stripped_bytes,
2439                         esize);
2440                 entrybytes_done += esize + stripped_bytes;
2441                 qinfo->udata_offset += esize;
2442                 ++qinfo->no_entries;
2443         }
2444         /* check if all replies received ... */
2445         if (cmd->data.setassparms.hdr.seq_no <
2446             cmd->data.setassparms.hdr.number_of_replies)
2447                 return 1;
2448         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2449         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2450         /* keep STRIP_ENTRIES flag so the user program can distinguish
2451          * stripped entries from normal ones */
2452         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2453                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2454         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2455         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2456         return 0;
2457 out_error:
2458         i = 0;
2459         memcpy(qinfo->udata, &i, 4);
2460         return 0;
2461 }
2462
2463 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2464                 struct qeth_cmd_buffer *iob, int len,
2465                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2466                         unsigned long),
2467                 void *reply_param)
2468 {
2469         QETH_CARD_TEXT(card, 4, "sendarp");
2470
2471         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2472         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2473                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2474         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2475                                       reply_cb, reply_param);
2476 }
2477
2478 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2479         enum qeth_prot_versions prot,
2480         struct qeth_arp_query_info *qinfo)
2481 {
2482         struct qeth_cmd_buffer *iob;
2483         struct qeth_ipa_cmd *cmd;
2484         int tmp;
2485         int rc;
2486
2487         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2488
2489         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2490                         IPA_CMD_ASS_ARP_QUERY_INFO,
2491                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2492                         prot);
2493         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2494         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2495         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2496         cmd->data.setassparms.data.query_arp.no_entries = 0;
2497         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2498                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2499                            qeth_l3_arp_query_cb, (void *)qinfo);
2500         if (rc) {
2501                 tmp = rc;
2502                 QETH_DBF_MESSAGE(2,
2503                         "Error while querying ARP cache on %s: %s "
2504                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2505                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2506         }
2507
2508         return rc;
2509 }
2510
2511 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2512 {
2513         struct qeth_arp_query_info qinfo = {0, };
2514         int rc;
2515
2516         QETH_CARD_TEXT(card, 3, "arpquery");
2517
2518         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2519                                IPA_ARP_PROCESSING)) {
2520                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2521                 rc = -EOPNOTSUPP;
2522                 goto out;
2523         }
2524         /* get size of userspace buffer and mask_bits -> 6 bytes */
2525         if (copy_from_user(&qinfo, udata, 6)) {
2526                 rc = -EFAULT;
2527                 goto out;
2528         }
2529         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2530         if (!qinfo.udata) {
2531                 rc = -ENOMEM;
2532                 goto out;
2533         }
2534         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2535         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2536         if (rc) {
2537                 if (copy_to_user(udata, qinfo.udata, 4))
2538                         rc = -EFAULT;
2539                         goto free_and_out;
2540         } else {
2541 #ifdef CONFIG_QETH_IPV6
2542                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2543                         /* fails in case of GuestLAN QDIO mode */
2544                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2545                                 &qinfo);
2546                 }
2547 #endif
2548                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2549                         QETH_CARD_TEXT(card, 4, "qactf");
2550                         rc = -EFAULT;
2551                         goto free_and_out;
2552                 }
2553                 QETH_CARD_TEXT_(card, 4, "qacts");
2554         }
2555 free_and_out:
2556         kfree(qinfo.udata);
2557 out:
2558         return rc;
2559 }
2560
2561 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2562                                 struct qeth_arp_cache_entry *entry)
2563 {
2564         struct qeth_cmd_buffer *iob;
2565         char buf[16];
2566         int tmp;
2567         int rc;
2568
2569         QETH_CARD_TEXT(card, 3, "arpadent");
2570
2571         /*
2572          * currently GuestLAN only supports the ARP assist function
2573          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2574          * thus we say EOPNOTSUPP for this ARP function
2575          */
2576         if (card->info.guestlan)
2577                 return -EOPNOTSUPP;
2578         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2579                 return -EOPNOTSUPP;
2580         }
2581
2582         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2583                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2584                                        sizeof(struct qeth_arp_cache_entry),
2585                                        QETH_PROT_IPV4);
2586         rc = qeth_l3_send_setassparms(card, iob,
2587                                    sizeof(struct qeth_arp_cache_entry),
2588                                    (unsigned long) entry,
2589                                    qeth_l3_default_setassparms_cb, NULL);
2590         if (rc) {
2591                 tmp = rc;
2592                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2593                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2594                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2595                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2596         }
2597         return rc;
2598 }
2599
2600 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2601                                 struct qeth_arp_cache_entry *entry)
2602 {
2603         struct qeth_cmd_buffer *iob;
2604         char buf[16] = {0, };
2605         int tmp;
2606         int rc;
2607
2608         QETH_CARD_TEXT(card, 3, "arprment");
2609
2610         /*
2611          * currently GuestLAN only supports the ARP assist function
2612          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2613          * thus we say EOPNOTSUPP for this ARP function
2614          */
2615         if (card->info.guestlan)
2616                 return -EOPNOTSUPP;
2617         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2618                 return -EOPNOTSUPP;
2619         }
2620         memcpy(buf, entry, 12);
2621         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2622                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2623                                        12,
2624                                        QETH_PROT_IPV4);
2625         rc = qeth_l3_send_setassparms(card, iob,
2626                                    12, (unsigned long)buf,
2627                                    qeth_l3_default_setassparms_cb, NULL);
2628         if (rc) {
2629                 tmp = rc;
2630                 memset(buf, 0, 16);
2631                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2632                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2633                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2634                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2635         }
2636         return rc;
2637 }
2638
2639 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2640 {
2641         int rc;
2642         int tmp;
2643
2644         QETH_CARD_TEXT(card, 3, "arpflush");
2645
2646         /*
2647          * currently GuestLAN only supports the ARP assist function
2648          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2649          * thus we say EOPNOTSUPP for this ARP function
2650         */
2651         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2652                 return -EOPNOTSUPP;
2653         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2654                 return -EOPNOTSUPP;
2655         }
2656         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2657                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2658         if (rc) {
2659                 tmp = rc;
2660                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2661                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2662                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2663         }
2664         return rc;
2665 }
2666
2667 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2668 {
2669         struct qeth_card *card = dev->ml_priv;
2670         struct qeth_arp_cache_entry arp_entry;
2671         struct mii_ioctl_data *mii_data;
2672         int rc = 0;
2673
2674         if (!card)
2675                 return -ENODEV;
2676
2677         if ((card->state != CARD_STATE_UP) &&
2678                 (card->state != CARD_STATE_SOFTSETUP))
2679                 return -ENODEV;
2680
2681         switch (cmd) {
2682         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2683                 if (!capable(CAP_NET_ADMIN)) {
2684                         rc = -EPERM;
2685                         break;
2686                 }
2687                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2688                 break;
2689         case SIOC_QETH_ARP_QUERY_INFO:
2690                 if (!capable(CAP_NET_ADMIN)) {
2691                         rc = -EPERM;
2692                         break;
2693                 }
2694                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2695                 break;
2696         case SIOC_QETH_ARP_ADD_ENTRY:
2697                 if (!capable(CAP_NET_ADMIN)) {
2698                         rc = -EPERM;
2699                         break;
2700                 }
2701                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2702                                    sizeof(struct qeth_arp_cache_entry)))
2703                         rc = -EFAULT;
2704                 else
2705                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2706                 break;
2707         case SIOC_QETH_ARP_REMOVE_ENTRY:
2708                 if (!capable(CAP_NET_ADMIN)) {
2709                         rc = -EPERM;
2710                         break;
2711                 }
2712                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2713                                    sizeof(struct qeth_arp_cache_entry)))
2714                         rc = -EFAULT;
2715                 else
2716                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2717                 break;
2718         case SIOC_QETH_ARP_FLUSH_CACHE:
2719                 if (!capable(CAP_NET_ADMIN)) {
2720                         rc = -EPERM;
2721                         break;
2722                 }
2723                 rc = qeth_l3_arp_flush_cache(card);
2724                 break;
2725         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2726                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2727                 break;
2728         case SIOC_QETH_GET_CARD_TYPE:
2729                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2730                      card->info.type == QETH_CARD_TYPE_OSX) &&
2731                     !card->info.guestlan)
2732                         return 1;
2733                 return 0;
2734                 break;
2735         case SIOCGMIIPHY:
2736                 mii_data = if_mii(rq);
2737                 mii_data->phy_id = 0;
2738                 break;
2739         case SIOCGMIIREG:
2740                 mii_data = if_mii(rq);
2741                 if (mii_data->phy_id != 0)
2742                         rc = -EINVAL;
2743                 else
2744                         mii_data->val_out = qeth_mdio_read(dev,
2745                                                         mii_data->phy_id,
2746                                                         mii_data->reg_num);
2747                 break;
2748         case SIOC_QETH_QUERY_OAT:
2749                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2750                 break;
2751         default:
2752                 rc = -EOPNOTSUPP;
2753         }
2754         if (rc)
2755                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2756         return rc;
2757 }
2758
2759 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2760 {
2761         int cast_type = RTN_UNSPEC;
2762         struct neighbour *n = NULL;
2763         struct dst_entry *dst;
2764
2765         rcu_read_lock();
2766         dst = skb_dst(skb);
2767         if (dst)
2768                 n = dst_get_neighbour_noref(dst);
2769         if (n) {
2770                 cast_type = n->type;
2771                 rcu_read_unlock();
2772                 if ((cast_type == RTN_BROADCAST) ||
2773                     (cast_type == RTN_MULTICAST) ||
2774                     (cast_type == RTN_ANYCAST))
2775                         return cast_type;
2776                 else
2777                         return RTN_UNSPEC;
2778         }
2779         rcu_read_unlock();
2780
2781         /* try something else */
2782         if (skb->protocol == ETH_P_IPV6)
2783                 return (skb_network_header(skb)[24] == 0xff) ?
2784                                 RTN_MULTICAST : 0;
2785         else if (skb->protocol == ETH_P_IP)
2786                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2787                                 RTN_MULTICAST : 0;
2788         /* ... */
2789         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2790                 return RTN_BROADCAST;
2791         else {
2792                 u16 hdr_mac;
2793
2794                 hdr_mac = *((u16 *)skb->data);
2795                 /* tr multicast? */
2796                 switch (card->info.link_type) {
2797                 case QETH_LINK_TYPE_HSTR:
2798                 case QETH_LINK_TYPE_LANE_TR:
2799                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2800                             (hdr_mac == QETH_TR_MAC_C))
2801                                 return RTN_MULTICAST;
2802                         break;
2803                 /* eth or so multicast? */
2804                 default:
2805                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2806                             (hdr_mac == QETH_ETH_MAC_V6))
2807                                 return RTN_MULTICAST;
2808                 }
2809         }
2810         return cast_type;
2811 }
2812
2813 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2814                 struct qeth_hdr *hdr, struct sk_buff *skb)
2815 {
2816         char daddr[16];
2817         struct af_iucv_trans_hdr *iucv_hdr;
2818
2819         skb_pull(skb, 14);
2820         card->dev->header_ops->create(skb, card->dev, 0,
2821                                       card->dev->dev_addr, card->dev->dev_addr,
2822                                       card->dev->addr_len);
2823         skb_pull(skb, 14);
2824         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2825         memset(hdr, 0, sizeof(struct qeth_hdr));
2826         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2827         hdr->hdr.l3.ext_flags = 0;
2828         hdr->hdr.l3.length = skb->len;
2829         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2830         memset(daddr, 0, sizeof(daddr));
2831         daddr[0] = 0xfe;
2832         daddr[1] = 0x80;
2833         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2834         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2835 }
2836
2837 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2838                 struct sk_buff *skb, int ipv, int cast_type)
2839 {
2840         struct dst_entry *dst;
2841
2842         memset(hdr, 0, sizeof(struct qeth_hdr));
2843         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2844         hdr->hdr.l3.ext_flags = 0;
2845
2846         /*
2847          * before we're going to overwrite this location with next hop ip.
2848          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2849          */
2850         if (vlan_tx_tag_present(skb)) {
2851                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2852                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2853                 else
2854                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2855                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2856         }
2857
2858         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2859
2860         rcu_read_lock();
2861         dst = skb_dst(skb);
2862         if (ipv == 4) {
2863                 struct rtable *rt = (struct rtable *) dst;
2864                 __be32 *pkey = &ip_hdr(skb)->daddr;
2865
2866                 if (rt->rt_gateway)
2867                         pkey = &rt->rt_gateway;
2868
2869                 /* IPv4 */
2870                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2871                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2872                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2873         } else if (ipv == 6) {
2874                 struct rt6_info *rt = (struct rt6_info *) dst;
2875                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2876
2877                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2878                         pkey = &rt->rt6i_gateway;
2879
2880                 /* IPv6 */
2881                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2882                 if (card->info.type == QETH_CARD_TYPE_IQD)
2883                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2884                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2885         } else {
2886                 /* passthrough */
2887                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2888                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2889                         sizeof(__u16), skb->dev->broadcast, 6)) {
2890                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2891                                                 QETH_HDR_PASSTHRU;
2892                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2893                             skb->dev->broadcast, 6)) {
2894                         /* broadcast? */
2895                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2896                                                 QETH_HDR_PASSTHRU;
2897                 } else {
2898                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2899                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2900                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2901                 }
2902         }
2903         rcu_read_unlock();
2904 }
2905
2906 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2907                 struct qeth_hdr *hdr, struct sk_buff *skb)
2908 {
2909         struct iphdr *iph = ip_hdr(skb);
2910
2911         /* tcph->check contains already the pseudo hdr checksum
2912          * so just set the header flags
2913          */
2914         if (iph->protocol == IPPROTO_UDP)
2915                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2916         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2917                 QETH_HDR_EXT_CSUM_HDR_REQ;
2918         iph->check = 0;
2919         if (card->options.performance_stats)
2920                 card->perf_stats.tx_csum++;
2921 }
2922
2923 static void qeth_tso_fill_header(struct qeth_card *card,
2924                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2925 {
2926         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2927         struct tcphdr *tcph = tcp_hdr(skb);
2928         struct iphdr *iph = ip_hdr(skb);
2929         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2930
2931         /*fix header to TSO values ...*/
2932         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2933         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2934         /*set values which are fix for the first approach ...*/
2935         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2936         hdr->ext.imb_hdr_no  = 1;
2937         hdr->ext.hdr_type    = 1;
2938         hdr->ext.hdr_version = 1;
2939         hdr->ext.hdr_len     = 28;
2940         /*insert non-fix values */
2941         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2942         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2943         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2944                                        sizeof(struct qeth_hdr_tso));
2945         tcph->check = 0;
2946         if (skb->protocol == ETH_P_IPV6) {
2947                 ip6h->payload_len = 0;
2948                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2949                                                0, IPPROTO_TCP, 0);
2950         } else {
2951                 /*OSA want us to set these values ...*/
2952                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2953                                          0, IPPROTO_TCP, 0);
2954                 iph->tot_len = 0;
2955                 iph->check = 0;
2956         }
2957 }
2958
2959 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2960 {
2961         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2962                 tcp_hdr(skb)->doff * 4;
2963         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2964         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2965         elements += skb_shinfo(skb)->nr_frags;
2966         return elements;
2967 }
2968
2969 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2970 {
2971         int rc;
2972         u16 *tag;
2973         struct qeth_hdr *hdr = NULL;
2974         int elements_needed = 0;
2975         int elems;
2976         struct qeth_card *card = dev->ml_priv;
2977         struct sk_buff *new_skb = NULL;
2978         int ipv = qeth_get_ip_version(skb);
2979         int cast_type = qeth_l3_get_cast_type(card, skb);
2980         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2981                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2982         int tx_bytes = skb->len;
2983         bool large_send;
2984         int data_offset = -1;
2985         int nr_frags;
2986
2987         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2988              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2989               ((card->options.cq == QETH_CQ_ENABLED) &&
2990                (skb->protocol != ETH_P_AF_IUCV)))) ||
2991             card->options.sniffer)
2992                         goto tx_drop;
2993
2994         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2995                 card->stats.tx_carrier_errors++;
2996                 goto tx_drop;
2997         }
2998
2999         if ((cast_type == RTN_BROADCAST) &&
3000             (card->info.broadcast_capable == 0))
3001                 goto tx_drop;
3002
3003         if (card->options.performance_stats) {
3004                 card->perf_stats.outbound_cnt++;
3005                 card->perf_stats.outbound_start_time = qeth_get_micros();
3006         }
3007
3008         large_send = skb_is_gso(skb);
3009
3010         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
3011             (skb_shinfo(skb)->nr_frags == 0)) {
3012                 new_skb = skb;
3013                 if (new_skb->protocol == ETH_P_AF_IUCV)
3014                         data_offset = 0;
3015                 else
3016                         data_offset = ETH_HLEN;
3017                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3018                 if (!hdr)
3019                         goto tx_drop;
3020                 elements_needed++;
3021         } else {
3022                 /* create a clone with writeable headroom */
3023                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3024                                         + VLAN_HLEN);
3025                 if (!new_skb)
3026                         goto tx_drop;
3027         }
3028
3029         if (card->info.type == QETH_CARD_TYPE_IQD) {
3030                 if (data_offset < 0)
3031                         skb_pull(new_skb, ETH_HLEN);
3032         } else {
3033                 if (ipv == 4) {
3034                         if (card->dev->type == ARPHRD_IEEE802_TR)
3035                                 skb_pull(new_skb, TR_HLEN);
3036                         else
3037                                 skb_pull(new_skb, ETH_HLEN);
3038                 }
3039
3040                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
3041                         skb_push(new_skb, VLAN_HLEN);
3042                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3043                         skb_copy_to_linear_data_offset(new_skb, 4,
3044                                 new_skb->data + 8, 4);
3045                         skb_copy_to_linear_data_offset(new_skb, 8,
3046                                 new_skb->data + 12, 4);
3047                         tag = (u16 *)(new_skb->data + 12);
3048                         *tag = __constant_htons(ETH_P_8021Q);
3049                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3050                 }
3051         }
3052
3053         netif_stop_queue(dev);
3054
3055         /* fix hardware limitation: as long as we do not have sbal
3056          * chaining we can not send long frag lists
3057          */
3058         if (large_send) {
3059                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3060                         if (skb_linearize(new_skb))
3061                                 goto tx_drop;
3062                         if (card->options.performance_stats)
3063                                 card->perf_stats.tx_lin++;
3064                 }
3065         }
3066
3067         if (large_send && (cast_type == RTN_UNSPEC)) {
3068                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3069                                                 sizeof(struct qeth_hdr_tso));
3070                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3071                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3072                 qeth_tso_fill_header(card, hdr, new_skb);
3073                 elements_needed++;
3074         } else {
3075                 if (data_offset < 0) {
3076                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3077                                                 sizeof(struct qeth_hdr));
3078                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3079                                                 cast_type);
3080                 } else {
3081                         if (new_skb->protocol == ETH_P_AF_IUCV)
3082                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3083                         else {
3084                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3085                                                         cast_type);
3086                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3087                         }
3088                 }
3089
3090                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3091                         qeth_l3_hdr_csum(card, hdr, new_skb);
3092         }
3093
3094         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3095                                                  elements_needed);
3096         if (!elems) {
3097                 if (data_offset >= 0)
3098                         kmem_cache_free(qeth_core_header_cache, hdr);
3099                 goto tx_drop;
3100         }
3101         elements_needed += elems;
3102         nr_frags = skb_shinfo(new_skb)->nr_frags;
3103
3104         if (card->info.type != QETH_CARD_TYPE_IQD) {
3105                 int len;
3106                 if (large_send)
3107                         len = ((unsigned long)tcp_hdr(new_skb) +
3108                                 tcp_hdr(new_skb)->doff * 4) -
3109                                 (unsigned long)new_skb->data;
3110                 else
3111                         len = sizeof(struct qeth_hdr_layer3);
3112
3113                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3114                         goto tx_drop;
3115                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3116                                          elements_needed);
3117         } else
3118                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3119                                         elements_needed, data_offset, 0);
3120
3121         if (!rc) {
3122                 card->stats.tx_packets++;
3123                 card->stats.tx_bytes += tx_bytes;
3124                 if (new_skb != skb)
3125                         dev_kfree_skb_any(skb);
3126                 if (card->options.performance_stats) {
3127                         if (large_send) {
3128                                 card->perf_stats.large_send_bytes += tx_bytes;
3129                                 card->perf_stats.large_send_cnt++;
3130                         }
3131                         if (nr_frags) {
3132                                 card->perf_stats.sg_skbs_sent++;
3133                                 /* nr_frags + skb->data */
3134                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3135                         }
3136                 }
3137                 rc = NETDEV_TX_OK;
3138         } else {
3139                 if (data_offset >= 0)
3140                         kmem_cache_free(qeth_core_header_cache, hdr);
3141
3142                 if (rc == -EBUSY) {
3143                         if (new_skb != skb)
3144                                 dev_kfree_skb_any(new_skb);
3145                         return NETDEV_TX_BUSY;
3146                 } else
3147                         goto tx_drop;
3148         }
3149
3150         netif_wake_queue(dev);
3151         if (card->options.performance_stats)
3152                 card->perf_stats.outbound_time += qeth_get_micros() -
3153                         card->perf_stats.outbound_start_time;
3154         return rc;
3155
3156 tx_drop:
3157         card->stats.tx_dropped++;
3158         card->stats.tx_errors++;
3159         if ((new_skb != skb) && new_skb)
3160                 dev_kfree_skb_any(new_skb);
3161         dev_kfree_skb_any(skb);
3162         netif_wake_queue(dev);
3163         return NETDEV_TX_OK;
3164 }
3165
3166 static int __qeth_l3_open(struct net_device *dev)
3167 {
3168         struct qeth_card *card = dev->ml_priv;
3169         int rc = 0;
3170
3171         QETH_CARD_TEXT(card, 4, "qethopen");
3172         if (card->state == CARD_STATE_UP)
3173                 return rc;
3174         if (card->state != CARD_STATE_SOFTSETUP)
3175                 return -ENODEV;
3176         card->data.state = CH_STATE_UP;
3177         card->state = CARD_STATE_UP;
3178         netif_start_queue(dev);
3179
3180         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3181                 napi_enable(&card->napi);
3182                 napi_schedule(&card->napi);
3183         } else
3184                 rc = -EIO;
3185         return rc;
3186 }
3187
3188 static int qeth_l3_open(struct net_device *dev)
3189 {
3190         struct qeth_card *card = dev->ml_priv;
3191
3192         QETH_CARD_TEXT(card, 5, "qethope_");
3193         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3194                 QETH_CARD_TEXT(card, 3, "openREC");
3195                 return -ERESTARTSYS;
3196         }
3197         return __qeth_l3_open(dev);
3198 }
3199
3200 static int qeth_l3_stop(struct net_device *dev)
3201 {
3202         struct qeth_card *card = dev->ml_priv;
3203
3204         QETH_CARD_TEXT(card, 4, "qethstop");
3205         netif_tx_disable(dev);
3206         if (card->state == CARD_STATE_UP) {
3207                 card->state = CARD_STATE_SOFTSETUP;
3208                 napi_disable(&card->napi);
3209         }
3210         return 0;
3211 }
3212
3213 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3214         netdev_features_t features)
3215 {
3216         struct qeth_card *card = dev->ml_priv;
3217
3218         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3219                 features &= ~NETIF_F_IP_CSUM;
3220         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3221                 features &= ~NETIF_F_TSO;
3222         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3223                 features &= ~NETIF_F_RXCSUM;
3224
3225         return features;
3226 }
3227
3228 static int qeth_l3_set_features(struct net_device *dev,
3229         netdev_features_t features)
3230 {
3231         struct qeth_card *card = dev->ml_priv;
3232         u32 changed = dev->features ^ features;
3233         int err;
3234
3235         if (!(changed & NETIF_F_RXCSUM))
3236                 return 0;
3237
3238         if (card->state == CARD_STATE_DOWN ||
3239             card->state == CARD_STATE_RECOVER)
3240                 return 0;
3241
3242         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3243         if (err)
3244                 dev->features = features ^ NETIF_F_RXCSUM;
3245
3246         return err;
3247 }
3248
3249 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3250         .get_link = ethtool_op_get_link,
3251         .get_strings = qeth_core_get_strings,
3252         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3253         .get_sset_count = qeth_core_get_sset_count,
3254         .get_drvinfo = qeth_core_get_drvinfo,
3255         .get_settings = qeth_core_ethtool_get_settings,
3256 };
3257
3258 /*
3259  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3260  * NOARP on the netdevice is no option because it also turns off neighbor
3261  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3262  * arp resolution but we want the hard header (packet socket will work
3263  * e.g. tcpdump)
3264  */
3265 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3266 {
3267         n->nud_state = NUD_NOARP;
3268         memcpy(n->ha, "FAKELL", 6);
3269         n->output = n->ops->connected_output;
3270         return 0;
3271 }
3272
3273 static int
3274 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3275 {
3276         if (np->tbl->family == AF_INET)
3277                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3278
3279         return 0;
3280 }
3281
3282 static const struct net_device_ops qeth_l3_netdev_ops = {
3283         .ndo_open               = qeth_l3_open,
3284         .ndo_stop               = qeth_l3_stop,
3285         .ndo_get_stats          = qeth_get_stats,
3286         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3287         .ndo_validate_addr      = eth_validate_addr,
3288         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3289         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3290         .ndo_change_mtu         = qeth_change_mtu,
3291         .ndo_fix_features       = qeth_l3_fix_features,
3292         .ndo_set_features       = qeth_l3_set_features,
3293         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3294         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3295         .ndo_tx_timeout         = qeth_tx_timeout,
3296 };
3297
3298 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3299         .ndo_open               = qeth_l3_open,
3300         .ndo_stop               = qeth_l3_stop,
3301         .ndo_get_stats          = qeth_get_stats,
3302         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3303         .ndo_validate_addr      = eth_validate_addr,
3304         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3305         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3306         .ndo_change_mtu         = qeth_change_mtu,
3307         .ndo_fix_features       = qeth_l3_fix_features,
3308         .ndo_set_features       = qeth_l3_set_features,
3309         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3310         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3311         .ndo_tx_timeout         = qeth_tx_timeout,
3312         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3313 };
3314
3315 static int qeth_l3_setup_netdev(struct qeth_card *card)
3316 {
3317         if (card->info.type == QETH_CARD_TYPE_OSD ||
3318             card->info.type == QETH_CARD_TYPE_OSX) {
3319                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3320                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3321 #ifdef CONFIG_TR
3322                         card->dev = alloc_trdev(0);
3323 #endif
3324                         if (!card->dev)
3325                                 return -ENODEV;
3326                         card->dev->netdev_ops = &qeth_l3_netdev_ops;
3327                 } else {
3328                         card->dev = alloc_etherdev(0);
3329                         if (!card->dev)
3330                                 return -ENODEV;
3331                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3332
3333                         /*IPv6 address autoconfiguration stuff*/
3334                         qeth_l3_get_unique_id(card);
3335                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3336                                 card->dev->dev_id = card->info.unique_id &
3337                                                          0xffff;
3338                         if (!card->info.guestlan) {
3339                                 card->dev->hw_features = NETIF_F_SG |
3340                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3341                                         NETIF_F_TSO;
3342                                 card->dev->features = NETIF_F_RXCSUM;
3343                         }
3344                 }
3345         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3346                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3347                 if (!card->dev)
3348                         return -ENODEV;
3349                 card->dev->flags |= IFF_NOARP;
3350                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3351                 qeth_l3_iqd_read_initial_mac(card);
3352                 if (card->options.hsuid[0])
3353                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3354         } else
3355                 return -ENODEV;
3356
3357         card->dev->ml_priv = card;
3358         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3359         card->dev->mtu = card->info.initial_mtu;
3360         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3361         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3362                                 NETIF_F_HW_VLAN_RX |
3363                                 NETIF_F_HW_VLAN_FILTER;
3364         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3365         card->dev->gso_max_size = 15 * PAGE_SIZE;
3366
3367         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3368         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3369         return register_netdev(card->dev);
3370 }
3371
3372 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3373 {
3374         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3375
3376         qeth_l3_create_device_attributes(&gdev->dev);
3377         card->options.layer2 = 0;
3378         card->info.hwtrap = 0;
3379         return 0;
3380 }
3381
3382 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3383 {
3384         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3385
3386         qeth_l3_remove_device_attributes(&cgdev->dev);
3387
3388         qeth_set_allowed_threads(card, 0, 1);
3389         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3390
3391         if (cgdev->state == CCWGROUP_ONLINE)
3392                 qeth_l3_set_offline(cgdev);
3393
3394         if (card->dev) {
3395                 unregister_netdev(card->dev);
3396                 card->dev = NULL;
3397         }
3398
3399         qeth_l3_clear_ip_list(card, 0);
3400         qeth_l3_clear_ipato_list(card);
3401         return;
3402 }
3403
3404 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3405 {
3406         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3407         int rc = 0;
3408         enum qeth_card_states recover_flag;
3409
3410         BUG_ON(!card);
3411         mutex_lock(&card->discipline_mutex);
3412         mutex_lock(&card->conf_mutex);
3413         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3414         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3415
3416         recover_flag = card->state;
3417         rc = qeth_core_hardsetup_card(card);
3418         if (rc) {
3419                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3420                 rc = -ENODEV;
3421                 goto out_remove;
3422         }
3423
3424         if (!card->dev && qeth_l3_setup_netdev(card)) {
3425                 rc = -ENODEV;
3426                 goto out_remove;
3427         }
3428
3429         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3430                 if (card->info.hwtrap &&
3431                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3432                         card->info.hwtrap = 0;
3433         } else
3434                 card->info.hwtrap = 0;
3435
3436         card->state = CARD_STATE_HARDSETUP;
3437         memset(&card->rx, 0, sizeof(struct qeth_rx));
3438         qeth_print_status_message(card);
3439
3440         /* softsetup */
3441         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3442
3443         rc = qeth_send_startlan(card);
3444         if (rc) {
3445                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3446                 if (rc == 0xe080) {
3447                         dev_warn(&card->gdev->dev,
3448                                 "The LAN is offline\n");
3449                         card->lan_online = 0;
3450                         goto contin;
3451                 }
3452                 rc = -ENODEV;
3453                 goto out_remove;
3454         } else
3455                 card->lan_online = 1;
3456
3457 contin:
3458         rc = qeth_l3_setadapter_parms(card);
3459         if (rc)
3460                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3461         if (!card->options.sniffer) {
3462                 rc = qeth_l3_start_ipassists(card);
3463                 if (rc)
3464                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3465                 rc = qeth_l3_setrouting_v4(card);
3466                 if (rc)
3467                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3468                 rc = qeth_l3_setrouting_v6(card);
3469                 if (rc)
3470                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3471         }
3472         netif_tx_disable(card->dev);
3473
3474         rc = qeth_init_qdio_queues(card);
3475         if (rc) {
3476                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3477                 rc = -ENODEV;
3478                 goto out_remove;
3479         }
3480         card->state = CARD_STATE_SOFTSETUP;
3481
3482         qeth_set_allowed_threads(card, 0xffffffff, 0);
3483         qeth_l3_set_ip_addr_list(card);
3484         if (card->lan_online)
3485                 netif_carrier_on(card->dev);
3486         else
3487                 netif_carrier_off(card->dev);
3488         if (recover_flag == CARD_STATE_RECOVER) {
3489                 rtnl_lock();
3490                 if (recovery_mode)
3491                         __qeth_l3_open(card->dev);
3492                 else
3493                         dev_open(card->dev);
3494                 qeth_l3_set_multicast_list(card->dev);
3495                 rtnl_unlock();
3496         }
3497         /* let user_space know that device is online */
3498         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3499         mutex_unlock(&card->conf_mutex);
3500         mutex_unlock(&card->discipline_mutex);
3501         return 0;
3502 out_remove:
3503         qeth_l3_stop_card(card, 0);
3504         ccw_device_set_offline(CARD_DDEV(card));
3505         ccw_device_set_offline(CARD_WDEV(card));
3506         ccw_device_set_offline(CARD_RDEV(card));
3507         if (recover_flag == CARD_STATE_RECOVER)
3508                 card->state = CARD_STATE_RECOVER;
3509         else
3510                 card->state = CARD_STATE_DOWN;
3511         mutex_unlock(&card->conf_mutex);
3512         mutex_unlock(&card->discipline_mutex);
3513         return rc;
3514 }
3515
3516 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3517 {
3518         return __qeth_l3_set_online(gdev, 0);
3519 }
3520
3521 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3522                         int recovery_mode)
3523 {
3524         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3525         int rc = 0, rc2 = 0, rc3 = 0;
3526         enum qeth_card_states recover_flag;
3527
3528         mutex_lock(&card->discipline_mutex);
3529         mutex_lock(&card->conf_mutex);
3530         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3531         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3532
3533         if (card->dev && netif_carrier_ok(card->dev))
3534                 netif_carrier_off(card->dev);
3535         recover_flag = card->state;
3536         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3537                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3538                 card->info.hwtrap = 1;
3539         }
3540         qeth_l3_stop_card(card, recovery_mode);
3541         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3542                 rtnl_lock();
3543                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3544                 rtnl_unlock();
3545         }
3546         rc  = ccw_device_set_offline(CARD_DDEV(card));
3547         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3548         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3549         if (!rc)
3550                 rc = (rc2) ? rc2 : rc3;
3551         if (rc)
3552                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3553         if (recover_flag == CARD_STATE_UP)
3554                 card->state = CARD_STATE_RECOVER;
3555         /* let user_space know that device is offline */
3556         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3557         mutex_unlock(&card->conf_mutex);
3558         mutex_unlock(&card->discipline_mutex);
3559         return 0;
3560 }
3561
3562 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3563 {
3564         return __qeth_l3_set_offline(cgdev, 0);
3565 }
3566
3567 static int qeth_l3_recover(void *ptr)
3568 {
3569         struct qeth_card *card;
3570         int rc = 0;
3571
3572         card = (struct qeth_card *) ptr;
3573         QETH_CARD_TEXT(card, 2, "recover1");
3574         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3575         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3576                 return 0;
3577         QETH_CARD_TEXT(card, 2, "recover2");
3578         dev_warn(&card->gdev->dev,
3579                 "A recovery process has been started for the device\n");
3580         __qeth_l3_set_offline(card->gdev, 1);
3581         rc = __qeth_l3_set_online(card->gdev, 1);
3582         if (!rc)
3583                 dev_info(&card->gdev->dev,
3584                         "Device successfully recovered!\n");
3585         else {
3586                 rtnl_lock();
3587                 dev_close(card->dev);
3588                 rtnl_unlock();
3589                 dev_warn(&card->gdev->dev, "The qeth device driver "
3590                         "failed to recover an error on the device\n");
3591         }
3592         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3593         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3594         return 0;
3595 }
3596
3597 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3598 {
3599         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3600         qeth_set_allowed_threads(card, 0, 1);
3601         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3602                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3603         qeth_qdio_clear_card(card, 0);
3604         qeth_clear_qdio_buffers(card);
3605 }
3606
3607 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3608 {
3609         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3610
3611         if (card->dev)
3612                 netif_device_detach(card->dev);
3613         qeth_set_allowed_threads(card, 0, 1);
3614         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3615         if (gdev->state == CCWGROUP_OFFLINE)
3616                 return 0;
3617         if (card->state == CARD_STATE_UP) {
3618                 if (card->info.hwtrap)
3619                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3620                 __qeth_l3_set_offline(card->gdev, 1);
3621         } else
3622                 __qeth_l3_set_offline(card->gdev, 0);
3623         return 0;
3624 }
3625
3626 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3627 {
3628         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3629         int rc = 0;
3630
3631         if (gdev->state == CCWGROUP_OFFLINE)
3632                 goto out;
3633
3634         if (card->state == CARD_STATE_RECOVER) {
3635                 rc = __qeth_l3_set_online(card->gdev, 1);
3636                 if (rc) {
3637                         rtnl_lock();
3638                         dev_close(card->dev);
3639                         rtnl_unlock();
3640                 }
3641         } else
3642                 rc = __qeth_l3_set_online(card->gdev, 0);
3643 out:
3644         qeth_set_allowed_threads(card, 0xffffffff, 0);
3645         if (card->dev)
3646                 netif_device_attach(card->dev);
3647         if (rc)
3648                 dev_warn(&card->gdev->dev, "The qeth device driver "
3649                         "failed to recover an error on the device\n");
3650         return rc;
3651 }
3652
3653 struct qeth_discipline qeth_l3_discipline = {
3654         .start_poll = qeth_qdio_start_poll,
3655         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3656         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3657         .recover = qeth_l3_recover,
3658         .setup = qeth_l3_probe_device,
3659         .remove = qeth_l3_remove_device,
3660         .set_online = qeth_l3_set_online,
3661         .set_offline = qeth_l3_set_offline,
3662         .shutdown = qeth_l3_shutdown,
3663         .freeze = qeth_l3_pm_suspend,
3664         .thaw = qeth_l3_pm_resume,
3665         .restore = qeth_l3_pm_resume,
3666 };
3667 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3668
3669 static int qeth_l3_ip_event(struct notifier_block *this,
3670                             unsigned long event, void *ptr)
3671 {
3672         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3673         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3674         struct qeth_ipaddr *addr;
3675         struct qeth_card *card;
3676
3677         if (dev_net(dev) != &init_net)
3678                 return NOTIFY_DONE;
3679
3680         card = qeth_l3_get_card_from_dev(dev);
3681         QETH_CARD_TEXT(card, 3, "ipevent");
3682         if (!card)
3683                 return NOTIFY_DONE;
3684
3685         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3686         if (addr != NULL) {
3687                 addr->u.a4.addr = ifa->ifa_address;
3688                 addr->u.a4.mask = ifa->ifa_mask;
3689                 addr->type = QETH_IP_TYPE_NORMAL;
3690         } else
3691                 goto out;
3692
3693         switch (event) {
3694         case NETDEV_UP:
3695                 if (!qeth_l3_add_ip(card, addr))
3696                         kfree(addr);
3697                 break;
3698         case NETDEV_DOWN:
3699                 if (!qeth_l3_delete_ip(card, addr))
3700                         kfree(addr);
3701                 break;
3702         default:
3703                 break;
3704         }
3705         qeth_l3_set_ip_addr_list(card);
3706 out:
3707         return NOTIFY_DONE;
3708 }
3709
3710 static struct notifier_block qeth_l3_ip_notifier = {
3711         qeth_l3_ip_event,
3712         NULL,
3713 };
3714
3715 #ifdef CONFIG_QETH_IPV6
3716 /**
3717  * IPv6 event handler
3718  */
3719 static int qeth_l3_ip6_event(struct notifier_block *this,
3720                              unsigned long event, void *ptr)
3721 {
3722         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3723         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3724         struct qeth_ipaddr *addr;
3725         struct qeth_card *card;
3726
3727         card = qeth_l3_get_card_from_dev(dev);
3728         if (!card)
3729                 return NOTIFY_DONE;
3730         QETH_CARD_TEXT(card, 3, "ip6event");
3731         if (!qeth_is_supported(card, IPA_IPV6))
3732                 return NOTIFY_DONE;
3733
3734         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3735         if (addr != NULL) {
3736                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3737                 addr->u.a6.pfxlen = ifa->prefix_len;
3738                 addr->type = QETH_IP_TYPE_NORMAL;
3739         } else
3740                 goto out;
3741
3742         switch (event) {
3743         case NETDEV_UP:
3744                 if (!qeth_l3_add_ip(card, addr))
3745                         kfree(addr);
3746                 break;
3747         case NETDEV_DOWN:
3748                 if (!qeth_l3_delete_ip(card, addr))
3749                         kfree(addr);
3750                 break;
3751         default:
3752                 break;
3753         }
3754         qeth_l3_set_ip_addr_list(card);
3755 out:
3756         return NOTIFY_DONE;
3757 }
3758
3759 static struct notifier_block qeth_l3_ip6_notifier = {
3760         qeth_l3_ip6_event,
3761         NULL,
3762 };
3763 #endif
3764
3765 static int qeth_l3_register_notifiers(void)
3766 {
3767         int rc;
3768
3769         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3770         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3771         if (rc)
3772                 return rc;
3773 #ifdef CONFIG_QETH_IPV6
3774         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3775         if (rc) {
3776                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3777                 return rc;
3778         }
3779 #else
3780         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3781 #endif
3782         return 0;
3783 }
3784
3785 static void qeth_l3_unregister_notifiers(void)
3786 {
3787
3788         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3789         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3790 #ifdef CONFIG_QETH_IPV6
3791         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3792 #endif /* QETH_IPV6 */
3793 }
3794
3795 static int __init qeth_l3_init(void)
3796 {
3797         int rc = 0;
3798
3799         pr_info("register layer 3 discipline\n");
3800         rc = qeth_l3_register_notifiers();
3801         return rc;
3802 }
3803
3804 static void __exit qeth_l3_exit(void)
3805 {
3806         qeth_l3_unregister_notifiers();
3807         pr_info("unregister layer 3 discipline\n");
3808 }
3809
3810 module_init(qeth_l3_init);
3811 module_exit(qeth_l3_exit);
3812 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3813 MODULE_DESCRIPTION("qeth layer 3 discipline");
3814 MODULE_LICENSE("GPL");