Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6.git] / drivers / s390 / net / qeth_l3_main.c
1 /*
2  *  drivers/s390/net/qeth_l3_main.c
3  *
4  *    Copyright IBM Corp. 2007
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/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/etherdevice.h>
20 #include <linux/mii.h>
21 #include <linux/ip.h>
22 #include <linux/reboot.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25
26 #include <net/ip.h>
27 #include <net/arp.h>
28
29 #include "qeth_l3.h"
30 #include "qeth_core_offl.h"
31
32 static int qeth_l3_set_offline(struct ccwgroup_device *);
33 static int qeth_l3_recover(void *);
34 static int qeth_l3_stop(struct net_device *);
35 static void qeth_l3_set_multicast_list(struct net_device *);
36 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
37 static int qeth_l3_register_addr_entry(struct qeth_card *,
38                 struct qeth_ipaddr *);
39 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
40                 struct qeth_ipaddr *);
41 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
42 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
43
44
45 static int qeth_l3_isxdigit(char *buf)
46 {
47         while (*buf) {
48                 if (!isxdigit(*buf++))
49                         return 0;
50         }
51         return 1;
52 }
53
54 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
55 {
56         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
57 }
58
59 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
60 {
61         int count = 0, rc = 0;
62         int in[4];
63         char c;
64
65         rc = sscanf(buf, "%u.%u.%u.%u%c",
66                     &in[0], &in[1], &in[2], &in[3], &c);
67         if (rc != 4 && (rc != 5 || c != '\n'))
68                 return -EINVAL;
69         for (count = 0; count < 4; count++) {
70                 if (in[count] > 255)
71                         return -EINVAL;
72                 addr[count] = in[count];
73         }
74         return 0;
75 }
76
77 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
78 {
79         sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
80                      ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
81                      addr[0], addr[1], addr[2], addr[3],
82                      addr[4], addr[5], addr[6], addr[7],
83                      addr[8], addr[9], addr[10], addr[11],
84                      addr[12], addr[13], addr[14], addr[15]);
85 }
86
87 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
88 {
89         const char *end, *end_tmp, *start;
90         __u16 *in;
91         char num[5];
92         int num2, cnt, out, found, save_cnt;
93         unsigned short in_tmp[8] = {0, };
94
95         cnt = out = found = save_cnt = num2 = 0;
96         end = start = buf;
97         in = (__u16 *) addr;
98         memset(in, 0, 16);
99         while (*end) {
100                 end = strchr(start, ':');
101                 if (end == NULL) {
102                         end = buf + strlen(buf);
103                         end_tmp = strchr(start, '\n');
104                         if (end_tmp != NULL)
105                                 end = end_tmp;
106                         out = 1;
107                 }
108                 if ((end - start)) {
109                         memset(num, 0, 5);
110                         if ((end - start) > 4)
111                                 return -EINVAL;
112                         memcpy(num, start, end - start);
113                         if (!qeth_l3_isxdigit(num))
114                                 return -EINVAL;
115                         sscanf(start, "%x", &num2);
116                         if (found)
117                                 in_tmp[save_cnt++] = num2;
118                         else
119                                 in[cnt++] = num2;
120                         if (out)
121                                 break;
122                 } else {
123                         if (found)
124                                 return -EINVAL;
125                         found = 1;
126                 }
127                 start = ++end;
128         }
129         if (cnt + save_cnt > 8)
130                 return -EINVAL;
131         cnt = 7;
132         while (save_cnt)
133                 in[cnt--] = in_tmp[--save_cnt];
134         return 0;
135 }
136
137 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
138                                 char *buf)
139 {
140         if (proto == QETH_PROT_IPV4)
141                 qeth_l3_ipaddr4_to_string(addr, buf);
142         else if (proto == QETH_PROT_IPV6)
143                 qeth_l3_ipaddr6_to_string(addr, buf);
144 }
145
146 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
147                                 __u8 *addr)
148 {
149         if (proto == QETH_PROT_IPV4)
150                 return qeth_l3_string_to_ipaddr4(buf, addr);
151         else if (proto == QETH_PROT_IPV6)
152                 return qeth_l3_string_to_ipaddr6(buf, addr);
153         else
154                 return -EINVAL;
155 }
156
157 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
158 {
159         int i, j;
160         u8 octet;
161
162         for (i = 0; i < len; ++i) {
163                 octet = addr[i];
164                 for (j = 7; j >= 0; --j) {
165                         bits[i*8 + j] = octet & 1;
166                         octet >>= 1;
167                 }
168         }
169 }
170
171 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
172                                                 struct qeth_ipaddr *addr)
173 {
174         struct qeth_ipato_entry *ipatoe;
175         u8 addr_bits[128] = {0, };
176         u8 ipatoe_bits[128] = {0, };
177         int rc = 0;
178
179         if (!card->ipato.enabled)
180                 return 0;
181
182         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
183                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
184         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
185                 if (addr->proto != ipatoe->proto)
186                         continue;
187                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
188                                           (ipatoe->proto == QETH_PROT_IPV4) ?
189                                           4 : 16);
190                 if (addr->proto == QETH_PROT_IPV4)
191                         rc = !memcmp(addr_bits, ipatoe_bits,
192                                      min(32, ipatoe->mask_bits));
193                 else
194                         rc = !memcmp(addr_bits, ipatoe_bits,
195                                      min(128, ipatoe->mask_bits));
196                 if (rc)
197                         break;
198         }
199         /* invert? */
200         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
201                 rc = !rc;
202         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
203                 rc = !rc;
204
205         return rc;
206 }
207
208 /*
209  * Add IP to be added to todo list. If there is already an "add todo"
210  * in this list we just incremenent the reference count.
211  * Returns 0 if we  just incremented reference count.
212  */
213 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
214                                         struct qeth_ipaddr *addr, int add)
215 {
216         struct qeth_ipaddr *tmp, *t;
217         int found = 0;
218
219         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
220                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
221                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
222                         return 0;
223                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
224                     (addr->proto       == QETH_PROT_IPV4)     &&
225                     (tmp->type         == addr->type)         &&
226                     (tmp->is_multicast == addr->is_multicast) &&
227                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
228                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
229                         found = 1;
230                         break;
231                 }
232                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
233                     (addr->proto       == QETH_PROT_IPV6)      &&
234                     (tmp->type         == addr->type)          &&
235                     (tmp->is_multicast == addr->is_multicast)  &&
236                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
237                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
238                             sizeof(struct in6_addr)) == 0)) {
239                         found = 1;
240                         break;
241                 }
242         }
243         if (found) {
244                 if (addr->users != 0)
245                         tmp->users += addr->users;
246                 else
247                         tmp->users += add ? 1 : -1;
248                 if (tmp->users == 0) {
249                         list_del(&tmp->entry);
250                         kfree(tmp);
251                 }
252                 return 0;
253         } else {
254                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
255                         list_add(&addr->entry, card->ip_tbd_list);
256                 else {
257                         if (addr->users == 0)
258                                 addr->users += add ? 1 : -1;
259                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
260                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
261                                 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
262                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
263                         }
264                         list_add_tail(&addr->entry, card->ip_tbd_list);
265                 }
266                 return 1;
267         }
268 }
269
270 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
271 {
272         unsigned long flags;
273         int rc = 0;
274
275         QETH_DBF_TEXT(TRACE, 4, "delip");
276
277         if (addr->proto == QETH_PROT_IPV4)
278                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
279         else {
280                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
281                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
282         }
283         spin_lock_irqsave(&card->ip_lock, flags);
284         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
285         spin_unlock_irqrestore(&card->ip_lock, flags);
286         return rc;
287 }
288
289 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
290 {
291         unsigned long flags;
292         int rc = 0;
293
294         QETH_DBF_TEXT(TRACE, 4, "addip");
295         if (addr->proto == QETH_PROT_IPV4)
296                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
297         else {
298                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
299                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
300         }
301         spin_lock_irqsave(&card->ip_lock, flags);
302         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
303         spin_unlock_irqrestore(&card->ip_lock, flags);
304         return rc;
305 }
306
307
308 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
309                                 enum qeth_prot_versions prot)
310 {
311         struct qeth_ipaddr *addr;
312
313         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
314         if (addr == NULL) {
315                 return NULL;
316         }
317         addr->type = QETH_IP_TYPE_NORMAL;
318         addr->proto = prot;
319         return addr;
320 }
321
322 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
323 {
324         struct qeth_ipaddr *iptodo;
325         unsigned long flags;
326
327         QETH_DBF_TEXT(TRACE, 4, "delmc");
328         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
329         if (!iptodo) {
330                 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
331                 return;
332         }
333         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
334         spin_lock_irqsave(&card->ip_lock, flags);
335         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
336                 kfree(iptodo);
337         spin_unlock_irqrestore(&card->ip_lock, flags);
338 }
339
340 /*
341  * Add/remove address to/from card's ip list, i.e. try to add or remove
342  * reference to/from an IP address that is already registered on the card.
343  * Returns:
344  *      0  address was on card and its reference count has been adjusted,
345  *         but is still > 0, so nothing has to be done
346  *         also returns 0 if card was not on card and the todo was to delete
347  *         the address -> there is also nothing to be done
348  *      1  address was not on card and the todo is to add it to the card's ip
349  *         list
350  *      -1 address was on card and its reference count has been decremented
351  *         to <= 0 by the todo -> address must be removed from card
352  */
353 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
354                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
355 {
356         struct qeth_ipaddr *addr;
357         int found = 0;
358
359         list_for_each_entry(addr, &card->ip_list, entry) {
360                 if ((addr->proto == QETH_PROT_IPV4) &&
361                     (todo->proto == QETH_PROT_IPV4) &&
362                     (addr->type == todo->type) &&
363                     (addr->u.a4.addr == todo->u.a4.addr) &&
364                     (addr->u.a4.mask == todo->u.a4.mask)) {
365                         found = 1;
366                         break;
367                 }
368                 if ((addr->proto == QETH_PROT_IPV6) &&
369                     (todo->proto == QETH_PROT_IPV6) &&
370                     (addr->type == todo->type) &&
371                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
372                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
373                             sizeof(struct in6_addr)) == 0)) {
374                         found = 1;
375                         break;
376                 }
377         }
378         if (found) {
379                 addr->users += todo->users;
380                 if (addr->users <= 0) {
381                         *__addr = addr;
382                         return -1;
383                 } else {
384                         /* for VIPA and RXIP limit refcount to 1 */
385                         if (addr->type != QETH_IP_TYPE_NORMAL)
386                                 addr->users = 1;
387                         return 0;
388                 }
389         }
390         if (todo->users > 0) {
391                 /* for VIPA and RXIP limit refcount to 1 */
392                 if (todo->type != QETH_IP_TYPE_NORMAL)
393                         todo->users = 1;
394                 return 1;
395         } else
396                 return 0;
397 }
398
399 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
400                                         unsigned long *flags)
401 {
402         struct list_head fail_list;
403         struct qeth_ipaddr *addr, *tmp;
404         int rc;
405
406         INIT_LIST_HEAD(&fail_list);
407 again:
408         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
409                 if (addr->is_multicast) {
410                         list_del(&addr->entry);
411                         spin_unlock_irqrestore(&card->ip_lock, *flags);
412                         rc = qeth_l3_deregister_addr_entry(card, addr);
413                         spin_lock_irqsave(&card->ip_lock, *flags);
414                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
415                                 kfree(addr);
416                         else
417                                 list_add_tail(&addr->entry, &fail_list);
418                         goto again;
419                 }
420         }
421         list_splice(&fail_list, &card->ip_list);
422 }
423
424 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
425 {
426         struct list_head *tbd_list;
427         struct qeth_ipaddr *todo, *addr;
428         unsigned long flags;
429         int rc;
430
431         QETH_DBF_TEXT(TRACE, 2, "sdiplist");
432         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
433
434         spin_lock_irqsave(&card->ip_lock, flags);
435         tbd_list = card->ip_tbd_list;
436         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
437         if (!card->ip_tbd_list) {
438                 QETH_DBF_TEXT(TRACE, 0, "silnomem");
439                 card->ip_tbd_list = tbd_list;
440                 spin_unlock_irqrestore(&card->ip_lock, flags);
441                 return;
442         } else
443                 INIT_LIST_HEAD(card->ip_tbd_list);
444
445         while (!list_empty(tbd_list)) {
446                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
447                 list_del(&todo->entry);
448                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
449                         __qeth_l3_delete_all_mc(card, &flags);
450                         kfree(todo);
451                         continue;
452                 }
453                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
454                 if (rc == 0) {
455                         /* nothing to be done; only adjusted refcount */
456                         kfree(todo);
457                 } else if (rc == 1) {
458                         /* new entry to be added to on-card list */
459                         spin_unlock_irqrestore(&card->ip_lock, flags);
460                         rc = qeth_l3_register_addr_entry(card, todo);
461                         spin_lock_irqsave(&card->ip_lock, flags);
462                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
463                                 list_add_tail(&todo->entry, &card->ip_list);
464                         else
465                                 kfree(todo);
466                 } else if (rc == -1) {
467                         /* on-card entry to be removed */
468                         list_del_init(&addr->entry);
469                         spin_unlock_irqrestore(&card->ip_lock, flags);
470                         rc = qeth_l3_deregister_addr_entry(card, addr);
471                         spin_lock_irqsave(&card->ip_lock, flags);
472                         if (!rc || (rc == IPA_RC_PRIMARY_ALREADY_DEFINED))
473                                 kfree(addr);
474                         else
475                                 list_add_tail(&addr->entry, &card->ip_list);
476                         kfree(todo);
477                 }
478         }
479         spin_unlock_irqrestore(&card->ip_lock, flags);
480         kfree(tbd_list);
481 }
482
483 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
484                                         int recover)
485 {
486         struct qeth_ipaddr *addr, *tmp;
487         unsigned long flags;
488
489         QETH_DBF_TEXT(TRACE, 4, "clearip");
490         spin_lock_irqsave(&card->ip_lock, flags);
491         /* clear todo list */
492         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
493                 list_del(&addr->entry);
494                 kfree(addr);
495         }
496
497         while (!list_empty(&card->ip_list)) {
498                 addr = list_entry(card->ip_list.next,
499                                   struct qeth_ipaddr, entry);
500                 list_del_init(&addr->entry);
501                 if (clean) {
502                         spin_unlock_irqrestore(&card->ip_lock, flags);
503                         qeth_l3_deregister_addr_entry(card, addr);
504                         spin_lock_irqsave(&card->ip_lock, flags);
505                 }
506                 if (!recover || addr->is_multicast) {
507                         kfree(addr);
508                         continue;
509                 }
510                 list_add_tail(&addr->entry, card->ip_tbd_list);
511         }
512         spin_unlock_irqrestore(&card->ip_lock, flags);
513 }
514
515 static int qeth_l3_address_exists_in_list(struct list_head *list,
516                 struct qeth_ipaddr *addr, int same_type)
517 {
518         struct qeth_ipaddr *tmp;
519
520         list_for_each_entry(tmp, list, entry) {
521                 if ((tmp->proto == QETH_PROT_IPV4) &&
522                     (addr->proto == QETH_PROT_IPV4) &&
523                     ((same_type && (tmp->type == addr->type)) ||
524                     (!same_type && (tmp->type != addr->type))) &&
525                     (tmp->u.a4.addr == addr->u.a4.addr))
526                         return 1;
527
528                 if ((tmp->proto == QETH_PROT_IPV6) &&
529                     (addr->proto == QETH_PROT_IPV6) &&
530                     ((same_type && (tmp->type == addr->type)) ||
531                     (!same_type && (tmp->type != addr->type))) &&
532                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
533                             sizeof(struct in6_addr)) == 0))
534                         return 1;
535
536         }
537         return 0;
538 }
539
540 static int qeth_l3_send_setdelmc(struct qeth_card *card,
541                         struct qeth_ipaddr *addr, int ipacmd)
542 {
543         int rc;
544         struct qeth_cmd_buffer *iob;
545         struct qeth_ipa_cmd *cmd;
546
547         QETH_DBF_TEXT(TRACE, 4, "setdelmc");
548
549         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
550         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
551         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
552         if (addr->proto == QETH_PROT_IPV6)
553                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
554                        sizeof(struct in6_addr));
555         else
556                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
557
558         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
559
560         return rc;
561 }
562
563 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
564 {
565         int i, j;
566         for (i = 0; i < 16; i++) {
567                 j = (len) - (i * 8);
568                 if (j >= 8)
569                         netmask[i] = 0xff;
570                 else if (j > 0)
571                         netmask[i] = (u8)(0xFF00 >> j);
572                 else
573                         netmask[i] = 0;
574         }
575 }
576
577 static int qeth_l3_send_setdelip(struct qeth_card *card,
578                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
579 {
580         int rc;
581         struct qeth_cmd_buffer *iob;
582         struct qeth_ipa_cmd *cmd;
583         __u8 netmask[16];
584
585         QETH_DBF_TEXT(TRACE, 4, "setdelip");
586         QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
587
588         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
589         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
590         if (addr->proto == QETH_PROT_IPV6) {
591                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
592                        sizeof(struct in6_addr));
593                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
594                 memcpy(cmd->data.setdelip6.mask, netmask,
595                        sizeof(struct in6_addr));
596                 cmd->data.setdelip6.flags = flags;
597         } else {
598                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
599                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
600                 cmd->data.setdelip4.flags = flags;
601         }
602
603         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
604
605         return rc;
606 }
607
608 static int qeth_l3_send_setrouting(struct qeth_card *card,
609         enum qeth_routing_types type, enum qeth_prot_versions prot)
610 {
611         int rc;
612         struct qeth_ipa_cmd *cmd;
613         struct qeth_cmd_buffer *iob;
614
615         QETH_DBF_TEXT(TRACE, 4, "setroutg");
616         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
617         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
618         cmd->data.setrtg.type = (type);
619         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
620
621         return rc;
622 }
623
624 static void qeth_l3_correct_routing_type(struct qeth_card *card,
625                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
626 {
627         if (card->info.type == QETH_CARD_TYPE_IQD) {
628                 switch (*type) {
629                 case NO_ROUTER:
630                 case PRIMARY_CONNECTOR:
631                 case SECONDARY_CONNECTOR:
632                 case MULTICAST_ROUTER:
633                         return;
634                 default:
635                         goto out_inval;
636                 }
637         } else {
638                 switch (*type) {
639                 case NO_ROUTER:
640                 case PRIMARY_ROUTER:
641                 case SECONDARY_ROUTER:
642                         return;
643                 case MULTICAST_ROUTER:
644                         if (qeth_is_ipafunc_supported(card, prot,
645                                                       IPA_OSA_MC_ROUTER))
646                                 return;
647                 default:
648                         goto out_inval;
649                 }
650         }
651 out_inval:
652         *type = NO_ROUTER;
653 }
654
655 int qeth_l3_setrouting_v4(struct qeth_card *card)
656 {
657         int rc;
658
659         QETH_DBF_TEXT(TRACE, 3, "setrtg4");
660
661         qeth_l3_correct_routing_type(card, &card->options.route4.type,
662                                   QETH_PROT_IPV4);
663
664         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
665                                   QETH_PROT_IPV4);
666         if (rc) {
667                 card->options.route4.type = NO_ROUTER;
668                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
669                         " on %s. Type set to 'no router'.\n", rc,
670                         QETH_CARD_IFNAME(card));
671         }
672         return rc;
673 }
674
675 int qeth_l3_setrouting_v6(struct qeth_card *card)
676 {
677         int rc = 0;
678
679         QETH_DBF_TEXT(TRACE, 3, "setrtg6");
680 #ifdef CONFIG_QETH_IPV6
681
682         if (!qeth_is_supported(card, IPA_IPV6))
683                 return 0;
684         qeth_l3_correct_routing_type(card, &card->options.route6.type,
685                                   QETH_PROT_IPV6);
686
687         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
688                                   QETH_PROT_IPV6);
689         if (rc) {
690                 card->options.route6.type = NO_ROUTER;
691                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
692                         " on %s. Type set to 'no router'.\n", rc,
693                         QETH_CARD_IFNAME(card));
694         }
695 #endif
696         return rc;
697 }
698
699 /*
700  * IP address takeover related functions
701  */
702 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
703 {
704
705         struct qeth_ipato_entry *ipatoe, *tmp;
706         unsigned long flags;
707
708         spin_lock_irqsave(&card->ip_lock, flags);
709         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
710                 list_del(&ipatoe->entry);
711                 kfree(ipatoe);
712         }
713         spin_unlock_irqrestore(&card->ip_lock, flags);
714 }
715
716 int qeth_l3_add_ipato_entry(struct qeth_card *card,
717                                 struct qeth_ipato_entry *new)
718 {
719         struct qeth_ipato_entry *ipatoe;
720         unsigned long flags;
721         int rc = 0;
722
723         QETH_DBF_TEXT(TRACE, 2, "addipato");
724         spin_lock_irqsave(&card->ip_lock, flags);
725         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
726                 if (ipatoe->proto != new->proto)
727                         continue;
728                 if (!memcmp(ipatoe->addr, new->addr,
729                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
730                     (ipatoe->mask_bits == new->mask_bits)) {
731                         rc = -EEXIST;
732                         break;
733                 }
734         }
735         if (!rc)
736                 list_add_tail(&new->entry, &card->ipato.entries);
737
738         spin_unlock_irqrestore(&card->ip_lock, flags);
739         return rc;
740 }
741
742 void qeth_l3_del_ipato_entry(struct qeth_card *card,
743                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
744 {
745         struct qeth_ipato_entry *ipatoe, *tmp;
746         unsigned long flags;
747
748         QETH_DBF_TEXT(TRACE, 2, "delipato");
749         spin_lock_irqsave(&card->ip_lock, flags);
750         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
751                 if (ipatoe->proto != proto)
752                         continue;
753                 if (!memcmp(ipatoe->addr, addr,
754                             (proto == QETH_PROT_IPV4)? 4:16) &&
755                     (ipatoe->mask_bits == mask_bits)) {
756                         list_del(&ipatoe->entry);
757                         kfree(ipatoe);
758                 }
759         }
760         spin_unlock_irqrestore(&card->ip_lock, flags);
761 }
762
763 /*
764  * VIPA related functions
765  */
766 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
767               const u8 *addr)
768 {
769         struct qeth_ipaddr *ipaddr;
770         unsigned long flags;
771         int rc = 0;
772
773         ipaddr = qeth_l3_get_addr_buffer(proto);
774         if (ipaddr) {
775                 if (proto == QETH_PROT_IPV4) {
776                         QETH_DBF_TEXT(TRACE, 2, "addvipa4");
777                         memcpy(&ipaddr->u.a4.addr, addr, 4);
778                         ipaddr->u.a4.mask = 0;
779                 } else if (proto == QETH_PROT_IPV6) {
780                         QETH_DBF_TEXT(TRACE, 2, "addvipa6");
781                         memcpy(&ipaddr->u.a6.addr, addr, 16);
782                         ipaddr->u.a6.pfxlen = 0;
783                 }
784                 ipaddr->type = QETH_IP_TYPE_VIPA;
785                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
786                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
787         } else
788                 return -ENOMEM;
789         spin_lock_irqsave(&card->ip_lock, flags);
790         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
791             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
792                 rc = -EEXIST;
793         spin_unlock_irqrestore(&card->ip_lock, flags);
794         if (rc) {
795                 return rc;
796         }
797         if (!qeth_l3_add_ip(card, ipaddr))
798                 kfree(ipaddr);
799         qeth_l3_set_ip_addr_list(card);
800         return rc;
801 }
802
803 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
804               const u8 *addr)
805 {
806         struct qeth_ipaddr *ipaddr;
807
808         ipaddr = qeth_l3_get_addr_buffer(proto);
809         if (ipaddr) {
810                 if (proto == QETH_PROT_IPV4) {
811                         QETH_DBF_TEXT(TRACE, 2, "delvipa4");
812                         memcpy(&ipaddr->u.a4.addr, addr, 4);
813                         ipaddr->u.a4.mask = 0;
814                 } else if (proto == QETH_PROT_IPV6) {
815                         QETH_DBF_TEXT(TRACE, 2, "delvipa6");
816                         memcpy(&ipaddr->u.a6.addr, addr, 16);
817                         ipaddr->u.a6.pfxlen = 0;
818                 }
819                 ipaddr->type = QETH_IP_TYPE_VIPA;
820         } else
821                 return;
822         if (!qeth_l3_delete_ip(card, ipaddr))
823                 kfree(ipaddr);
824         qeth_l3_set_ip_addr_list(card);
825 }
826
827 /*
828  * proxy ARP related functions
829  */
830 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
831               const u8 *addr)
832 {
833         struct qeth_ipaddr *ipaddr;
834         unsigned long flags;
835         int rc = 0;
836
837         ipaddr = qeth_l3_get_addr_buffer(proto);
838         if (ipaddr) {
839                 if (proto == QETH_PROT_IPV4) {
840                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
841                         memcpy(&ipaddr->u.a4.addr, addr, 4);
842                         ipaddr->u.a4.mask = 0;
843                 } else if (proto == QETH_PROT_IPV6) {
844                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
845                         memcpy(&ipaddr->u.a6.addr, addr, 16);
846                         ipaddr->u.a6.pfxlen = 0;
847                 }
848                 ipaddr->type = QETH_IP_TYPE_RXIP;
849                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
850                 ipaddr->del_flags = 0;
851         } else
852                 return -ENOMEM;
853         spin_lock_irqsave(&card->ip_lock, flags);
854         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
855             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
856                 rc = -EEXIST;
857         spin_unlock_irqrestore(&card->ip_lock, flags);
858         if (rc) {
859                 return rc;
860         }
861         if (!qeth_l3_add_ip(card, ipaddr))
862                 kfree(ipaddr);
863         qeth_l3_set_ip_addr_list(card);
864         return 0;
865 }
866
867 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
868                         const u8 *addr)
869 {
870         struct qeth_ipaddr *ipaddr;
871
872         ipaddr = qeth_l3_get_addr_buffer(proto);
873         if (ipaddr) {
874                 if (proto == QETH_PROT_IPV4) {
875                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
876                         memcpy(&ipaddr->u.a4.addr, addr, 4);
877                         ipaddr->u.a4.mask = 0;
878                 } else if (proto == QETH_PROT_IPV6) {
879                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
880                         memcpy(&ipaddr->u.a6.addr, addr, 16);
881                         ipaddr->u.a6.pfxlen = 0;
882                 }
883                 ipaddr->type = QETH_IP_TYPE_RXIP;
884         } else
885                 return;
886         if (!qeth_l3_delete_ip(card, ipaddr))
887                 kfree(ipaddr);
888         qeth_l3_set_ip_addr_list(card);
889 }
890
891 static int qeth_l3_register_addr_entry(struct qeth_card *card,
892                                 struct qeth_ipaddr *addr)
893 {
894         char buf[50];
895         int rc = 0;
896         int cnt = 3;
897
898         if (addr->proto == QETH_PROT_IPV4) {
899                 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
900                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
901         } else if (addr->proto == QETH_PROT_IPV6) {
902                 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
903                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
904                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
905         } else {
906                 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
907                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
908         }
909         do {
910                 if (addr->is_multicast)
911                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
912                 else
913                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
914                                         addr->set_flags);
915                 if (rc)
916                         QETH_DBF_TEXT(TRACE, 2, "failed");
917         } while ((--cnt > 0) && rc);
918         if (rc) {
919                 QETH_DBF_TEXT(TRACE, 2, "FAILED");
920                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
921                 dev_warn(&card->gdev->dev,
922                         "Registering IP address %s failed\n", buf);
923         }
924         return rc;
925 }
926
927 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
928                                                 struct qeth_ipaddr *addr)
929 {
930         int rc = 0;
931
932         if (addr->proto == QETH_PROT_IPV4) {
933                 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
934                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
935         } else if (addr->proto == QETH_PROT_IPV6) {
936                 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
937                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
938                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
939         } else {
940                 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
941                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
942         }
943         if (addr->is_multicast)
944                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
945         else
946                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
947                                         addr->del_flags);
948         if (rc)
949                 QETH_DBF_TEXT(TRACE, 2, "failed");
950
951         return rc;
952 }
953
954 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
955 {
956         if (cast_type == RTN_MULTICAST)
957                 return QETH_CAST_MULTICAST;
958         if (cast_type == RTN_BROADCAST)
959                 return QETH_CAST_BROADCAST;
960         return QETH_CAST_UNICAST;
961 }
962
963 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
964 {
965         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
966         if (cast_type == RTN_MULTICAST)
967                 return ct | QETH_CAST_MULTICAST;
968         if (cast_type == RTN_ANYCAST)
969                 return ct | QETH_CAST_ANYCAST;
970         if (cast_type == RTN_BROADCAST)
971                 return ct | QETH_CAST_BROADCAST;
972         return ct | QETH_CAST_UNICAST;
973 }
974
975 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
976                                         __u32 mode)
977 {
978         int rc;
979         struct qeth_cmd_buffer *iob;
980         struct qeth_ipa_cmd *cmd;
981
982         QETH_DBF_TEXT(TRACE, 4, "adpmode");
983
984         iob = qeth_get_adapter_cmd(card, command,
985                                    sizeof(struct qeth_ipacmd_setadpparms));
986         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
987         cmd->data.setadapterparms.data.mode = mode;
988         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
989                                NULL);
990         return rc;
991 }
992
993 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
994 {
995         int rc;
996
997         QETH_DBF_TEXT(TRACE, 4, "adphstr");
998
999         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1000                 rc = qeth_l3_send_setadp_mode(card,
1001                                         IPA_SETADP_SET_BROADCAST_MODE,
1002                                         card->options.broadcast_mode);
1003                 if (rc)
1004                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1005                                    "device %s: x%x\n",
1006                                    CARD_BUS_ID(card), rc);
1007                 rc = qeth_l3_send_setadp_mode(card,
1008                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1009                                         card->options.macaddr_mode);
1010                 if (rc)
1011                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1012                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1013                 return rc;
1014         }
1015         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1016                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1017                            "to set broadcast mode, using ALLRINGS "
1018                            "on device %s:\n", CARD_BUS_ID(card));
1019         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1020                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1021                            "to set macaddr mode, using NONCANONICAL "
1022                            "on device %s:\n", CARD_BUS_ID(card));
1023         return 0;
1024 }
1025
1026 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1027 {
1028         int rc;
1029
1030         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1031
1032         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1033                 dev_info(&card->gdev->dev,
1034                         "set adapter parameters not supported.\n");
1035                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1036                 return 0;
1037         }
1038         rc = qeth_query_setadapterparms(card);
1039         if (rc) {
1040                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1041                         "0x%x\n", card->gdev->dev.bus_id, rc);
1042                 return rc;
1043         }
1044         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1045                 rc = qeth_setadpparms_change_macaddr(card);
1046                 if (rc)
1047                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1048                                 " address failed\n");
1049         }
1050
1051         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1052             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1053                 rc = qeth_l3_setadapter_hstr(card);
1054
1055         return rc;
1056 }
1057
1058 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1059                         struct qeth_reply *reply, unsigned long data)
1060 {
1061         struct qeth_ipa_cmd *cmd;
1062
1063         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1064
1065         cmd = (struct qeth_ipa_cmd *) data;
1066         if (cmd->hdr.return_code == 0) {
1067                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1068                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1069                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1070                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1071                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1072         }
1073         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1074             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1075                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1076                 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1077         }
1078         return 0;
1079 }
1080
1081 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1082         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1083         __u16 len, enum qeth_prot_versions prot)
1084 {
1085         struct qeth_cmd_buffer *iob;
1086         struct qeth_ipa_cmd *cmd;
1087
1088         QETH_DBF_TEXT(TRACE, 4, "getasscm");
1089         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1090
1091         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1092         cmd->data.setassparms.hdr.assist_no = ipa_func;
1093         cmd->data.setassparms.hdr.length = 8 + len;
1094         cmd->data.setassparms.hdr.command_code = cmd_code;
1095         cmd->data.setassparms.hdr.return_code = 0;
1096         cmd->data.setassparms.hdr.seq_no = 0;
1097
1098         return iob;
1099 }
1100
1101 static int qeth_l3_send_setassparms(struct qeth_card *card,
1102         struct qeth_cmd_buffer *iob, __u16 len, long data,
1103         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1104                 unsigned long),
1105         void *reply_param)
1106 {
1107         int rc;
1108         struct qeth_ipa_cmd *cmd;
1109
1110         QETH_DBF_TEXT(TRACE, 4, "sendassp");
1111
1112         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1113         if (len <= sizeof(__u32))
1114                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1115         else   /* (len > sizeof(__u32)) */
1116                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1117
1118         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1119         return rc;
1120 }
1121
1122 #ifdef CONFIG_QETH_IPV6
1123 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1124                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1125 {
1126         int rc;
1127         struct qeth_cmd_buffer *iob;
1128
1129         QETH_DBF_TEXT(TRACE, 4, "simassp6");
1130         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1131                                        0, QETH_PROT_IPV6);
1132         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1133                                    qeth_l3_default_setassparms_cb, NULL);
1134         return rc;
1135 }
1136 #endif
1137
1138 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1139                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1140 {
1141         int rc;
1142         int length = 0;
1143         struct qeth_cmd_buffer *iob;
1144
1145         QETH_DBF_TEXT(TRACE, 4, "simassp4");
1146         if (data)
1147                 length = sizeof(__u32);
1148         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1149                                        length, QETH_PROT_IPV4);
1150         rc = qeth_l3_send_setassparms(card, iob, length, data,
1151                                    qeth_l3_default_setassparms_cb, NULL);
1152         return rc;
1153 }
1154
1155 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1156 {
1157         int rc;
1158
1159         QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1160
1161         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1162                 dev_info(&card->gdev->dev,
1163                         "ARP processing not supported on %s!\n",
1164                         QETH_CARD_IFNAME(card));
1165                 return 0;
1166         }
1167         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1168                                         IPA_CMD_ASS_START, 0);
1169         if (rc) {
1170                 dev_warn(&card->gdev->dev,
1171                         "Starting ARP processing support for %s failed\n",
1172                         QETH_CARD_IFNAME(card));
1173         }
1174         return rc;
1175 }
1176
1177 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1178 {
1179         int rc;
1180
1181         QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1182
1183         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1184                 dev_info(&card->gdev->dev,
1185                         "Hardware IP fragmentation not supported on %s\n",
1186                         QETH_CARD_IFNAME(card));
1187                 return  -EOPNOTSUPP;
1188         }
1189
1190         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1191                                           IPA_CMD_ASS_START, 0);
1192         if (rc) {
1193                 dev_warn(&card->gdev->dev,
1194                         "Starting IP fragmentation support for %s failed\n",
1195                         QETH_CARD_IFNAME(card));
1196         } else
1197                 dev_info(&card->gdev->dev,
1198                         "Hardware IP fragmentation enabled \n");
1199         return rc;
1200 }
1201
1202 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1203 {
1204         int rc;
1205
1206         QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1207
1208         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1209                 dev_info(&card->gdev->dev,
1210                         "Inbound source MAC-address not supported on %s\n",
1211                         QETH_CARD_IFNAME(card));
1212                 return -EOPNOTSUPP;
1213         }
1214
1215         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1216                                           IPA_CMD_ASS_START, 0);
1217         if (rc)
1218                 dev_warn(&card->gdev->dev,
1219                         "Starting source MAC-address support for %s failed\n",
1220                         QETH_CARD_IFNAME(card));
1221         return rc;
1222 }
1223
1224 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1225 {
1226         int rc = 0;
1227
1228         QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1229
1230         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1231                 dev_info(&card->gdev->dev,
1232                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1233                 return -EOPNOTSUPP;
1234         }
1235
1236         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1237                                           IPA_CMD_ASS_START, 0);
1238         if (rc) {
1239                 dev_warn(&card->gdev->dev,
1240                         "Starting VLAN support for %s failed\n",
1241                         QETH_CARD_IFNAME(card));
1242         } else {
1243                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1244         }
1245         return rc;
1246 }
1247
1248 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1249 {
1250         int rc;
1251
1252         QETH_DBF_TEXT(TRACE, 3, "stmcast");
1253
1254         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1255                 dev_info(&card->gdev->dev,
1256                         "Multicast not supported on %s\n",
1257                         QETH_CARD_IFNAME(card));
1258                 return -EOPNOTSUPP;
1259         }
1260
1261         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1262                                           IPA_CMD_ASS_START, 0);
1263         if (rc) {
1264                 dev_warn(&card->gdev->dev,
1265                         "Starting multicast support for %s failed\n",
1266                         QETH_CARD_IFNAME(card));
1267         } else {
1268                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1269                 card->dev->flags |= IFF_MULTICAST;
1270         }
1271         return rc;
1272 }
1273
1274 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1275                 struct qeth_reply *reply, unsigned long data)
1276 {
1277         struct qeth_ipa_cmd *cmd;
1278
1279         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1280
1281         cmd = (struct qeth_ipa_cmd *) data;
1282         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1283                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1284                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1285         } else {
1286                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1287                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1288         }
1289         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1290         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1291         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1292         return 0;
1293 }
1294
1295 static int qeth_l3_query_ipassists(struct qeth_card *card,
1296                                 enum qeth_prot_versions prot)
1297 {
1298         int rc;
1299         struct qeth_cmd_buffer *iob;
1300
1301         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1302         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1303         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1304         return rc;
1305 }
1306
1307 #ifdef CONFIG_QETH_IPV6
1308 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1309 {
1310         int rc;
1311
1312         QETH_DBF_TEXT(TRACE, 3, "softipv6");
1313
1314         if (card->info.type == QETH_CARD_TYPE_IQD)
1315                 goto out;
1316
1317         rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1318         if (rc) {
1319                 dev_err(&card->gdev->dev,
1320                         "Activating IPv6 support for %s failed\n",
1321                         QETH_CARD_IFNAME(card));
1322                 return rc;
1323         }
1324         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1325                                           IPA_CMD_ASS_START, 3);
1326         if (rc) {
1327                 dev_err(&card->gdev->dev,
1328                         "Activating IPv6 support for %s failed\n",
1329                         QETH_CARD_IFNAME(card));
1330                 return rc;
1331         }
1332         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1333                                                IPA_CMD_ASS_START);
1334         if (rc) {
1335                 dev_err(&card->gdev->dev,
1336                         "Activating IPv6 support for %s failed\n",
1337                          QETH_CARD_IFNAME(card));
1338                 return rc;
1339         }
1340         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1341                                                IPA_CMD_ASS_START);
1342         if (rc) {
1343                 dev_warn(&card->gdev->dev,
1344                         "Enabling the passthrough mode for %s failed\n",
1345                         QETH_CARD_IFNAME(card));
1346                 return rc;
1347         }
1348 out:
1349         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1350         return 0;
1351 }
1352 #endif
1353
1354 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1355 {
1356         int rc = 0;
1357
1358         QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1359
1360         if (!qeth_is_supported(card, IPA_IPV6)) {
1361                 dev_info(&card->gdev->dev,
1362                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1363                 return 0;
1364         }
1365 #ifdef CONFIG_QETH_IPV6
1366         rc = qeth_l3_softsetup_ipv6(card);
1367 #endif
1368         return rc ;
1369 }
1370
1371 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1372 {
1373         int rc;
1374
1375         QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1376         card->info.broadcast_capable = 0;
1377         if (!qeth_is_supported(card, IPA_FILTERING)) {
1378                 dev_info(&card->gdev->dev,
1379                         "Broadcast not supported on %s\n",
1380                         QETH_CARD_IFNAME(card));
1381                 rc = -EOPNOTSUPP;
1382                 goto out;
1383         }
1384         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1385                                           IPA_CMD_ASS_START, 0);
1386         if (rc) {
1387                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1388                         "%s failed\n", QETH_CARD_IFNAME(card));
1389                 goto out;
1390         }
1391
1392         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1393                                           IPA_CMD_ASS_CONFIGURE, 1);
1394         if (rc) {
1395                 dev_warn(&card->gdev->dev,
1396                         "Setting up broadcast filtering for %s failed\n",
1397                         QETH_CARD_IFNAME(card));
1398                 goto out;
1399         }
1400         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1401         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1402         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1403                                           IPA_CMD_ASS_ENABLE, 1);
1404         if (rc) {
1405                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1406                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1407                 goto out;
1408         }
1409         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1410 out:
1411         if (card->info.broadcast_capable)
1412                 card->dev->flags |= IFF_BROADCAST;
1413         else
1414                 card->dev->flags &= ~IFF_BROADCAST;
1415         return rc;
1416 }
1417
1418 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1419 {
1420         int rc;
1421
1422         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1423                                           IPA_CMD_ASS_START, 0);
1424         if (rc) {
1425                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1426                         "failed, using SW checksumming\n",
1427                         QETH_CARD_IFNAME(card));
1428                 return rc;
1429         }
1430         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1431                                           IPA_CMD_ASS_ENABLE,
1432                                           card->info.csum_mask);
1433         if (rc) {
1434                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1435                         "failed, using SW checksumming\n",
1436                         QETH_CARD_IFNAME(card));
1437                 return rc;
1438         }
1439         return 0;
1440 }
1441
1442 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1443 {
1444         int rc = 0;
1445
1446         QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1447
1448         if (card->options.checksum_type == NO_CHECKSUMMING) {
1449                 dev_info(&card->gdev->dev,
1450                         "Using no checksumming on %s.\n",
1451                         QETH_CARD_IFNAME(card));
1452                 return 0;
1453         }
1454         if (card->options.checksum_type == SW_CHECKSUMMING) {
1455                 dev_info(&card->gdev->dev,
1456                         "Using SW checksumming on %s.\n",
1457                         QETH_CARD_IFNAME(card));
1458                 return 0;
1459         }
1460         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1461                 dev_info(&card->gdev->dev,
1462                         "Inbound HW Checksumming not "
1463                         "supported on %s,\ncontinuing "
1464                         "using Inbound SW Checksumming\n",
1465                         QETH_CARD_IFNAME(card));
1466                 card->options.checksum_type = SW_CHECKSUMMING;
1467                 return 0;
1468         }
1469         rc = qeth_l3_send_checksum_command(card);
1470         if (!rc)
1471                 dev_info(&card->gdev->dev,
1472                         "HW Checksumming (inbound) enabled\n");
1473
1474         return rc;
1475 }
1476
1477 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1478 {
1479         int rc;
1480
1481         QETH_DBF_TEXT(TRACE, 3, "sttso");
1482
1483         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1484                 dev_info(&card->gdev->dev,
1485                         "Outbound TSO not supported on %s\n",
1486                         QETH_CARD_IFNAME(card));
1487                 rc = -EOPNOTSUPP;
1488         } else {
1489                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1490                                                 IPA_CMD_ASS_START, 0);
1491                 if (rc)
1492                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1493                                 "segmentation offload for %s failed\n",
1494                                 QETH_CARD_IFNAME(card));
1495                 else
1496                         dev_info(&card->gdev->dev,
1497                                 "Outbound TSO enabled\n");
1498         }
1499         if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1500                 card->options.large_send = QETH_LARGE_SEND_NO;
1501                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1502         }
1503         return rc;
1504 }
1505
1506 static int qeth_l3_start_ipassists(struct qeth_card *card)
1507 {
1508         QETH_DBF_TEXT(TRACE, 3, "strtipas");
1509         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1510         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1511         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1512         qeth_l3_start_ipa_vlan(card);           /* go on*/
1513         qeth_l3_start_ipa_multicast(card);              /* go on*/
1514         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1515         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1516         qeth_l3_start_ipa_checksum(card);               /* go on*/
1517         qeth_l3_start_ipa_tso(card);            /* go on*/
1518         return 0;
1519 }
1520
1521 static int qeth_l3_put_unique_id(struct qeth_card *card)
1522 {
1523
1524         int rc = 0;
1525         struct qeth_cmd_buffer *iob;
1526         struct qeth_ipa_cmd *cmd;
1527
1528         QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1529
1530         if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1531                 UNIQUE_ID_NOT_BY_CARD)
1532                 return -1;
1533         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1534                                      QETH_PROT_IPV6);
1535         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1536         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1537                                 card->info.unique_id;
1538         memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1539                card->dev->dev_addr, OSA_ADDR_LEN);
1540         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1541         return rc;
1542 }
1543
1544 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1545                 struct qeth_reply *reply, unsigned long data)
1546 {
1547         struct qeth_ipa_cmd *cmd;
1548
1549         cmd = (struct qeth_ipa_cmd *) data;
1550         if (cmd->hdr.return_code == 0)
1551                 memcpy(card->dev->dev_addr,
1552                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1553         else
1554                 random_ether_addr(card->dev->dev_addr);
1555
1556         return 0;
1557 }
1558
1559 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1560 {
1561         int rc = 0;
1562         struct qeth_cmd_buffer *iob;
1563         struct qeth_ipa_cmd *cmd;
1564
1565         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1566
1567         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1568                                      QETH_PROT_IPV6);
1569         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1570         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1571                         card->info.unique_id;
1572
1573         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1574                                 NULL);
1575         return rc;
1576 }
1577
1578 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1579                 struct qeth_reply *reply, unsigned long data)
1580 {
1581         struct qeth_ipa_cmd *cmd;
1582
1583         cmd = (struct qeth_ipa_cmd *) data;
1584         if (cmd->hdr.return_code == 0)
1585                 card->info.unique_id = *((__u16 *)
1586                                 &cmd->data.create_destroy_addr.unique_id[6]);
1587         else {
1588                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1589                                         UNIQUE_ID_NOT_BY_CARD;
1590                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1591                         "generate a unique ID\n");
1592         }
1593         return 0;
1594 }
1595
1596 static int qeth_l3_get_unique_id(struct qeth_card *card)
1597 {
1598         int rc = 0;
1599         struct qeth_cmd_buffer *iob;
1600         struct qeth_ipa_cmd *cmd;
1601
1602         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1603
1604         if (!qeth_is_supported(card, IPA_IPV6)) {
1605                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1606                                         UNIQUE_ID_NOT_BY_CARD;
1607                 return 0;
1608         }
1609
1610         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1611                                      QETH_PROT_IPV6);
1612         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1613         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1614                         card->info.unique_id;
1615
1616         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1617         return rc;
1618 }
1619
1620 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1621                                 struct net_device *dev)
1622 {
1623         if (dev->type == ARPHRD_IEEE802_TR)
1624                 ip_tr_mc_map(ipm, mac);
1625         else
1626                 ip_eth_mc_map(ipm, mac);
1627 }
1628
1629 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1630 {
1631         struct qeth_ipaddr *ipm;
1632         struct ip_mc_list *im4;
1633         char buf[MAX_ADDR_LEN];
1634
1635         QETH_DBF_TEXT(TRACE, 4, "addmc");
1636         for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1637                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1638                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1639                 if (!ipm)
1640                         continue;
1641                 ipm->u.a4.addr = im4->multiaddr;
1642                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1643                 ipm->is_multicast = 1;
1644                 if (!qeth_l3_add_ip(card, ipm))
1645                         kfree(ipm);
1646         }
1647 }
1648
1649 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1650 {
1651         struct in_device *in_dev;
1652         struct vlan_group *vg;
1653         int i;
1654
1655         QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1656         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1657                 return;
1658
1659         vg = card->vlangrp;
1660         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1661                 struct net_device *netdev = vlan_group_get_device(vg, i);
1662                 if (netdev == NULL ||
1663                     !(netdev->flags & IFF_UP))
1664                         continue;
1665                 in_dev = in_dev_get(netdev);
1666                 if (!in_dev)
1667                         continue;
1668                 read_lock(&in_dev->mc_list_lock);
1669                 qeth_l3_add_mc(card, in_dev);
1670                 read_unlock(&in_dev->mc_list_lock);
1671                 in_dev_put(in_dev);
1672         }
1673 }
1674
1675 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1676 {
1677         struct in_device *in4_dev;
1678
1679         QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1680         in4_dev = in_dev_get(card->dev);
1681         if (in4_dev == NULL)
1682                 return;
1683         read_lock(&in4_dev->mc_list_lock);
1684         qeth_l3_add_mc(card, in4_dev);
1685         qeth_l3_add_vlan_mc(card);
1686         read_unlock(&in4_dev->mc_list_lock);
1687         in_dev_put(in4_dev);
1688 }
1689
1690 #ifdef CONFIG_QETH_IPV6
1691 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1692 {
1693         struct qeth_ipaddr *ipm;
1694         struct ifmcaddr6 *im6;
1695         char buf[MAX_ADDR_LEN];
1696
1697         QETH_DBF_TEXT(TRACE, 4, "addmc6");
1698         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1699                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1700                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1701                 if (!ipm)
1702                         continue;
1703                 ipm->is_multicast = 1;
1704                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1705                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1706                        sizeof(struct in6_addr));
1707                 if (!qeth_l3_add_ip(card, ipm))
1708                         kfree(ipm);
1709         }
1710 }
1711
1712 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1713 {
1714         struct inet6_dev *in_dev;
1715         struct vlan_group *vg;
1716         int i;
1717
1718         QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1719         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1720                 return;
1721
1722         vg = card->vlangrp;
1723         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1724                 struct net_device *netdev = vlan_group_get_device(vg, i);
1725                 if (netdev == NULL ||
1726                     !(netdev->flags & IFF_UP))
1727                         continue;
1728                 in_dev = in6_dev_get(netdev);
1729                 if (!in_dev)
1730                         continue;
1731                 read_lock_bh(&in_dev->lock);
1732                 qeth_l3_add_mc6(card, in_dev);
1733                 read_unlock_bh(&in_dev->lock);
1734                 in6_dev_put(in_dev);
1735         }
1736 }
1737
1738 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1739 {
1740         struct inet6_dev *in6_dev;
1741
1742         QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1743         if (!qeth_is_supported(card, IPA_IPV6))
1744                 return ;
1745         in6_dev = in6_dev_get(card->dev);
1746         if (in6_dev == NULL)
1747                 return;
1748         read_lock_bh(&in6_dev->lock);
1749         qeth_l3_add_mc6(card, in6_dev);
1750         qeth_l3_add_vlan_mc6(card);
1751         read_unlock_bh(&in6_dev->lock);
1752         in6_dev_put(in6_dev);
1753 }
1754 #endif /* CONFIG_QETH_IPV6 */
1755
1756 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1757                         unsigned short vid)
1758 {
1759         struct in_device *in_dev;
1760         struct in_ifaddr *ifa;
1761         struct qeth_ipaddr *addr;
1762
1763         QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1764
1765         in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1766         if (!in_dev)
1767                 return;
1768         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1769                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1770                 if (addr) {
1771                         addr->u.a4.addr = ifa->ifa_address;
1772                         addr->u.a4.mask = ifa->ifa_mask;
1773                         addr->type = QETH_IP_TYPE_NORMAL;
1774                         if (!qeth_l3_delete_ip(card, addr))
1775                                 kfree(addr);
1776                 }
1777         }
1778         in_dev_put(in_dev);
1779 }
1780
1781 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1782                         unsigned short vid)
1783 {
1784 #ifdef CONFIG_QETH_IPV6
1785         struct inet6_dev *in6_dev;
1786         struct inet6_ifaddr *ifa;
1787         struct qeth_ipaddr *addr;
1788
1789         QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1790
1791         in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1792         if (!in6_dev)
1793                 return;
1794         for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1795                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1796                 if (addr) {
1797                         memcpy(&addr->u.a6.addr, &ifa->addr,
1798                                sizeof(struct in6_addr));
1799                         addr->u.a6.pfxlen = ifa->prefix_len;
1800                         addr->type = QETH_IP_TYPE_NORMAL;
1801                         if (!qeth_l3_delete_ip(card, addr))
1802                                 kfree(addr);
1803                 }
1804         }
1805         in6_dev_put(in6_dev);
1806 #endif /* CONFIG_QETH_IPV6 */
1807 }
1808
1809 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1810                         unsigned short vid)
1811 {
1812         if (!card->vlangrp)
1813                 return;
1814         qeth_l3_free_vlan_addresses4(card, vid);
1815         qeth_l3_free_vlan_addresses6(card, vid);
1816 }
1817
1818 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1819                         struct vlan_group *grp)
1820 {
1821         struct qeth_card *card = dev->ml_priv;
1822         unsigned long flags;
1823
1824         QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1825         spin_lock_irqsave(&card->vlanlock, flags);
1826         card->vlangrp = grp;
1827         spin_unlock_irqrestore(&card->vlanlock, flags);
1828 }
1829
1830 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1831 {
1832         return;
1833 }
1834
1835 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1836 {
1837         struct qeth_card *card = dev->ml_priv;
1838         unsigned long flags;
1839
1840         QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1841         spin_lock_irqsave(&card->vlanlock, flags);
1842         /* unregister IP addresses of vlan device */
1843         qeth_l3_free_vlan_addresses(card, vid);
1844         vlan_group_set_device(card->vlangrp, vid, NULL);
1845         spin_unlock_irqrestore(&card->vlanlock, flags);
1846         qeth_l3_set_multicast_list(card->dev);
1847 }
1848
1849 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1850                         struct sk_buff *skb, struct qeth_hdr *hdr)
1851 {
1852         unsigned short vlan_id = 0;
1853         __be16 prot;
1854         struct iphdr *ip_hdr;
1855         unsigned char tg_addr[MAX_ADDR_LEN];
1856
1857         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1858                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1859                               ETH_P_IP);
1860                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1861                 case QETH_CAST_MULTICAST:
1862                         switch (prot) {
1863 #ifdef CONFIG_QETH_IPV6
1864                         case __constant_htons(ETH_P_IPV6):
1865                                 ndisc_mc_map((struct in6_addr *)
1866                                      skb->data + 24,
1867                                      tg_addr, card->dev, 0);
1868                                 break;
1869 #endif
1870                         case __constant_htons(ETH_P_IP):
1871                                 ip_hdr = (struct iphdr *)skb->data;
1872                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1873                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1874                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1875                                 break;
1876                         default:
1877                                 memcpy(tg_addr, card->dev->broadcast,
1878                                         card->dev->addr_len);
1879                         }
1880                         card->stats.multicast++;
1881                         skb->pkt_type = PACKET_MULTICAST;
1882                         break;
1883                 case QETH_CAST_BROADCAST:
1884                         memcpy(tg_addr, card->dev->broadcast,
1885                                 card->dev->addr_len);
1886                         card->stats.multicast++;
1887                         skb->pkt_type = PACKET_BROADCAST;
1888                         break;
1889                 case QETH_CAST_UNICAST:
1890                 case QETH_CAST_ANYCAST:
1891                 case QETH_CAST_NOCAST:
1892                 default:
1893                         skb->pkt_type = PACKET_HOST;
1894                         memcpy(tg_addr, card->dev->dev_addr,
1895                                 card->dev->addr_len);
1896                 }
1897                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1898                         card->dev->header_ops->create(skb, card->dev, prot,
1899                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1900                                 card->dev->addr_len);
1901                 else
1902                         card->dev->header_ops->create(skb, card->dev, prot,
1903                                 tg_addr, "FAKELL", card->dev->addr_len);
1904         }
1905
1906 #ifdef CONFIG_TR
1907         if (card->dev->type == ARPHRD_IEEE802_TR)
1908                 skb->protocol = tr_type_trans(skb, card->dev);
1909         else
1910 #endif
1911                 skb->protocol = eth_type_trans(skb, card->dev);
1912
1913         if (hdr->hdr.l3.ext_flags &
1914             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1915                 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1916                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1917         }
1918
1919         skb->ip_summed = card->options.checksum_type;
1920         if (card->options.checksum_type == HW_CHECKSUMMING) {
1921                 if ((hdr->hdr.l3.ext_flags &
1922                       (QETH_HDR_EXT_CSUM_HDR_REQ |
1923                        QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1924                      (QETH_HDR_EXT_CSUM_HDR_REQ |
1925                       QETH_HDR_EXT_CSUM_TRANSP_REQ))
1926                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1927                 else
1928                         skb->ip_summed = SW_CHECKSUMMING;
1929         }
1930
1931         return vlan_id;
1932 }
1933
1934 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
1935                             struct qeth_qdio_buffer *buf, int index)
1936 {
1937         struct qdio_buffer_element *element;
1938         struct sk_buff *skb;
1939         struct qeth_hdr *hdr;
1940         int offset;
1941         __u16 vlan_tag = 0;
1942         unsigned int len;
1943
1944         /* get first element of current buffer */
1945         element = (struct qdio_buffer_element *)&buf->buffer->element[0];
1946         offset = 0;
1947         if (card->options.performance_stats)
1948                 card->perf_stats.bufs_rec++;
1949         while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
1950                                        &offset, &hdr))) {
1951                 skb->dev = card->dev;
1952                 /* is device UP ? */
1953                 if (!(card->dev->flags & IFF_UP)) {
1954                         dev_kfree_skb_any(skb);
1955                         continue;
1956                 }
1957
1958                 switch (hdr->hdr.l3.id) {
1959                 case QETH_HEADER_TYPE_LAYER3:
1960                         vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
1961                         len = skb->len;
1962                         if (vlan_tag)
1963                                 if (card->vlangrp)
1964                                         vlan_hwaccel_rx(skb, card->vlangrp,
1965                                                 vlan_tag);
1966                                 else {
1967                                         dev_kfree_skb_any(skb);
1968                                         continue;
1969                                 }
1970                         else
1971                                 netif_rx(skb);
1972                         break;
1973                 default:
1974                         dev_kfree_skb_any(skb);
1975                         QETH_DBF_TEXT(TRACE, 3, "inbunkno");
1976                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1977                         continue;
1978                 }
1979
1980                 card->dev->last_rx = jiffies;
1981                 card->stats.rx_packets++;
1982                 card->stats.rx_bytes += len;
1983         }
1984 }
1985
1986 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1987                         struct qeth_card *card)
1988 {
1989         int rc = 0;
1990         struct vlan_group *vg;
1991         int i;
1992
1993         vg = card->vlangrp;
1994         if (!vg)
1995                 return rc;
1996
1997         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1998                 if (vlan_group_get_device(vg, i) == dev) {
1999                         rc = QETH_VLAN_CARD;
2000                         break;
2001                 }
2002         }
2003
2004         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2005                 return 0;
2006
2007         return rc;
2008 }
2009
2010 static int qeth_l3_verify_dev(struct net_device *dev)
2011 {
2012         struct qeth_card *card;
2013         unsigned long flags;
2014         int rc = 0;
2015
2016         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2017         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2018                 if (card->dev == dev) {
2019                         rc = QETH_REAL_CARD;
2020                         break;
2021                 }
2022                 rc = qeth_l3_verify_vlan_dev(dev, card);
2023                 if (rc)
2024                         break;
2025         }
2026         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2027
2028         return rc;
2029 }
2030
2031 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2032 {
2033         struct qeth_card *card = NULL;
2034         int rc;
2035
2036         rc = qeth_l3_verify_dev(dev);
2037         if (rc == QETH_REAL_CARD)
2038                 card = dev->ml_priv;
2039         else if (rc == QETH_VLAN_CARD)
2040                 card = vlan_dev_real_dev(dev)->ml_priv;
2041         if (card && card->options.layer2)
2042                 card = NULL;
2043         QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2044         return card ;
2045 }
2046
2047 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2048 {
2049         int rc = 0;
2050
2051         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2052         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2053
2054         qeth_set_allowed_threads(card, 0, 1);
2055         if (card->read.state == CH_STATE_UP &&
2056             card->write.state == CH_STATE_UP &&
2057             (card->state == CARD_STATE_UP)) {
2058                 if (recovery_mode)
2059                         qeth_l3_stop(card->dev);
2060                 else {
2061                         if (card->dev) {
2062                                 rtnl_lock();
2063                                 dev_close(card->dev);
2064                                 rtnl_unlock();
2065                         }
2066                 }
2067                 if (!card->use_hard_stop) {
2068                         rc = qeth_send_stoplan(card);
2069                         if (rc)
2070                                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2071                 }
2072                 card->state = CARD_STATE_SOFTSETUP;
2073         }
2074         if (card->state == CARD_STATE_SOFTSETUP) {
2075                 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2076                 qeth_clear_ipacmd_list(card);
2077                 card->state = CARD_STATE_HARDSETUP;
2078         }
2079         if (card->state == CARD_STATE_HARDSETUP) {
2080                 if (!card->use_hard_stop &&
2081                     (card->info.type != QETH_CARD_TYPE_IQD)) {
2082                         rc = qeth_l3_put_unique_id(card);
2083                         if (rc)
2084                                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2085                 }
2086                 qeth_qdio_clear_card(card, 0);
2087                 qeth_clear_qdio_buffers(card);
2088                 qeth_clear_working_pool_list(card);
2089                 card->state = CARD_STATE_DOWN;
2090         }
2091         if (card->state == CARD_STATE_DOWN) {
2092                 qeth_clear_cmd_buffers(&card->read);
2093                 qeth_clear_cmd_buffers(&card->write);
2094         }
2095         card->use_hard_stop = 0;
2096         return rc;
2097 }
2098
2099 static void qeth_l3_set_multicast_list(struct net_device *dev)
2100 {
2101         struct qeth_card *card = dev->ml_priv;
2102
2103         QETH_DBF_TEXT(TRACE, 3, "setmulti");
2104         qeth_l3_delete_mc_addresses(card);
2105         qeth_l3_add_multicast_ipv4(card);
2106 #ifdef CONFIG_QETH_IPV6
2107         qeth_l3_add_multicast_ipv6(card);
2108 #endif
2109         qeth_l3_set_ip_addr_list(card);
2110         if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2111                 return;
2112         qeth_setadp_promisc_mode(card);
2113 }
2114
2115 static const char *qeth_l3_arp_get_error_cause(int *rc)
2116 {
2117         switch (*rc) {
2118         case QETH_IPA_ARP_RC_FAILED:
2119                 *rc = -EIO;
2120                 return "operation failed";
2121         case QETH_IPA_ARP_RC_NOTSUPP:
2122                 *rc = -EOPNOTSUPP;
2123                 return "operation not supported";
2124         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2125                 *rc = -EINVAL;
2126                 return "argument out of range";
2127         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2128                 *rc = -EOPNOTSUPP;
2129                 return "query operation not supported";
2130         case QETH_IPA_ARP_RC_Q_NO_DATA:
2131                 *rc = -ENOENT;
2132                 return "no query data available";
2133         default:
2134                 return "unknown error";
2135         }
2136 }
2137
2138 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2139 {
2140         int tmp;
2141         int rc;
2142
2143         QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2144
2145         /*
2146          * currently GuestLAN only supports the ARP assist function
2147          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2148          * thus we say EOPNOTSUPP for this ARP function
2149          */
2150         if (card->info.guestlan)
2151                 return -EOPNOTSUPP;
2152         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2153                 return -EOPNOTSUPP;
2154         }
2155         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2156                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2157                                           no_entries);
2158         if (rc) {
2159                 tmp = rc;
2160                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2161                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2162                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2163         }
2164         return rc;
2165 }
2166
2167 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2168                 struct qeth_arp_query_data *qdata, int entry_size,
2169                 int uentry_size)
2170 {
2171         char *entry_ptr;
2172         char *uentry_ptr;
2173         int i;
2174
2175         entry_ptr = (char *)&qdata->data;
2176         uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2177         for (i = 0; i < qdata->no_entries; ++i) {
2178                 /* strip off 32 bytes "media specific information" */
2179                 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2180                 entry_ptr += entry_size;
2181                 uentry_ptr += uentry_size;
2182         }
2183 }
2184
2185 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2186                 struct qeth_reply *reply, unsigned long data)
2187 {
2188         struct qeth_ipa_cmd *cmd;
2189         struct qeth_arp_query_data *qdata;
2190         struct qeth_arp_query_info *qinfo;
2191         int entry_size;
2192         int uentry_size;
2193         int i;
2194
2195         QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2196
2197         qinfo = (struct qeth_arp_query_info *) reply->param;
2198         cmd = (struct qeth_ipa_cmd *) data;
2199         if (cmd->hdr.return_code) {
2200                 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2201                 return 0;
2202         }
2203         if (cmd->data.setassparms.hdr.return_code) {
2204                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2205                 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2206                 return 0;
2207         }
2208         qdata = &cmd->data.setassparms.data.query_arp;
2209         switch (qdata->reply_bits) {
2210         case 5:
2211                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2212                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2213                         uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2214                 break;
2215         case 7:
2216                 /* fall through to default */
2217         default:
2218                 /* tr is the same as eth -> entry7 */
2219                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2220                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2221                         uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2222                 break;
2223         }
2224         /* check if there is enough room in userspace */
2225         if ((qinfo->udata_len - qinfo->udata_offset) <
2226                         qdata->no_entries * uentry_size){
2227                 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2228                 cmd->hdr.return_code = -ENOMEM;
2229                 goto out_error;
2230         }
2231         QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2232                        cmd->data.setassparms.hdr.number_of_replies);
2233         QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2234         QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2235
2236         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2237                 /* strip off "media specific information" */
2238                 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2239                                                uentry_size);
2240         } else
2241                 /*copy entries to user buffer*/
2242                 memcpy(qinfo->udata + qinfo->udata_offset,
2243                        (char *)&qdata->data, qdata->no_entries*uentry_size);
2244
2245         qinfo->no_entries += qdata->no_entries;
2246         qinfo->udata_offset += (qdata->no_entries*uentry_size);
2247         /* check if all replies received ... */
2248         if (cmd->data.setassparms.hdr.seq_no <
2249             cmd->data.setassparms.hdr.number_of_replies)
2250                 return 1;
2251         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2252         /* keep STRIP_ENTRIES flag so the user program can distinguish
2253          * stripped entries from normal ones */
2254         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2255                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2256         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2257         return 0;
2258 out_error:
2259         i = 0;
2260         memcpy(qinfo->udata, &i, 4);
2261         return 0;
2262 }
2263
2264 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2265                 struct qeth_cmd_buffer *iob, int len,
2266                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2267                         unsigned long),
2268                 void *reply_param)
2269 {
2270         QETH_DBF_TEXT(TRACE, 4, "sendarp");
2271
2272         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2273         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2274                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2275         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2276                                       reply_cb, reply_param);
2277 }
2278
2279 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2280 {
2281         struct qeth_cmd_buffer *iob;
2282         struct qeth_arp_query_info qinfo = {0, };
2283         int tmp;
2284         int rc;
2285
2286         QETH_DBF_TEXT(TRACE, 3, "arpquery");
2287
2288         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2289                                IPA_ARP_PROCESSING)) {
2290                 return -EOPNOTSUPP;
2291         }
2292         /* get size of userspace buffer and mask_bits -> 6 bytes */
2293         if (copy_from_user(&qinfo, udata, 6))
2294                 return -EFAULT;
2295         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2296         if (!qinfo.udata)
2297                 return -ENOMEM;
2298         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2299         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2300                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2301                                        sizeof(int), QETH_PROT_IPV4);
2302
2303         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2304                                    QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2305                                    qeth_l3_arp_query_cb, (void *)&qinfo);
2306         if (rc) {
2307                 tmp = rc;
2308                 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2309                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2310                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2311                 if (copy_to_user(udata, qinfo.udata, 4))
2312                         rc = -EFAULT;
2313         } else {
2314                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2315                         rc = -EFAULT;
2316         }
2317         kfree(qinfo.udata);
2318         return rc;
2319 }
2320
2321 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2322                                 struct qeth_arp_cache_entry *entry)
2323 {
2324         struct qeth_cmd_buffer *iob;
2325         char buf[16];
2326         int tmp;
2327         int rc;
2328
2329         QETH_DBF_TEXT(TRACE, 3, "arpadent");
2330
2331         /*
2332          * currently GuestLAN only supports the ARP assist function
2333          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2334          * thus we say EOPNOTSUPP for this ARP function
2335          */
2336         if (card->info.guestlan)
2337                 return -EOPNOTSUPP;
2338         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2339                 return -EOPNOTSUPP;
2340         }
2341
2342         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2343                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2344                                        sizeof(struct qeth_arp_cache_entry),
2345                                        QETH_PROT_IPV4);
2346         rc = qeth_l3_send_setassparms(card, iob,
2347                                    sizeof(struct qeth_arp_cache_entry),
2348                                    (unsigned long) entry,
2349                                    qeth_l3_default_setassparms_cb, NULL);
2350         if (rc) {
2351                 tmp = rc;
2352                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2353                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2354                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2355                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2356         }
2357         return rc;
2358 }
2359
2360 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2361                                 struct qeth_arp_cache_entry *entry)
2362 {
2363         struct qeth_cmd_buffer *iob;
2364         char buf[16] = {0, };
2365         int tmp;
2366         int rc;
2367
2368         QETH_DBF_TEXT(TRACE, 3, "arprment");
2369
2370         /*
2371          * currently GuestLAN only supports the ARP assist function
2372          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2373          * thus we say EOPNOTSUPP for this ARP function
2374          */
2375         if (card->info.guestlan)
2376                 return -EOPNOTSUPP;
2377         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2378                 return -EOPNOTSUPP;
2379         }
2380         memcpy(buf, entry, 12);
2381         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2382                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2383                                        12,
2384                                        QETH_PROT_IPV4);
2385         rc = qeth_l3_send_setassparms(card, iob,
2386                                    12, (unsigned long)buf,
2387                                    qeth_l3_default_setassparms_cb, NULL);
2388         if (rc) {
2389                 tmp = rc;
2390                 memset(buf, 0, 16);
2391                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2392                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2393                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2394                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2395         }
2396         return rc;
2397 }
2398
2399 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2400 {
2401         int rc;
2402         int tmp;
2403
2404         QETH_DBF_TEXT(TRACE, 3, "arpflush");
2405
2406         /*
2407          * currently GuestLAN only supports the ARP assist function
2408          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2409          * thus we say EOPNOTSUPP for this ARP function
2410         */
2411         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2412                 return -EOPNOTSUPP;
2413         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2414                 return -EOPNOTSUPP;
2415         }
2416         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2417                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2418         if (rc) {
2419                 tmp = rc;
2420                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2421                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2422                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2423         }
2424         return rc;
2425 }
2426
2427 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2428 {
2429         struct qeth_card *card = dev->ml_priv;
2430         struct qeth_arp_cache_entry arp_entry;
2431         struct mii_ioctl_data *mii_data;
2432         int rc = 0;
2433
2434         if (!card)
2435                 return -ENODEV;
2436
2437         if ((card->state != CARD_STATE_UP) &&
2438                 (card->state != CARD_STATE_SOFTSETUP))
2439                 return -ENODEV;
2440
2441         switch (cmd) {
2442         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2443                 if (!capable(CAP_NET_ADMIN)) {
2444                         rc = -EPERM;
2445                         break;
2446                 }
2447                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2448                 break;
2449         case SIOC_QETH_ARP_QUERY_INFO:
2450                 if (!capable(CAP_NET_ADMIN)) {
2451                         rc = -EPERM;
2452                         break;
2453                 }
2454                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2455                 break;
2456         case SIOC_QETH_ARP_ADD_ENTRY:
2457                 if (!capable(CAP_NET_ADMIN)) {
2458                         rc = -EPERM;
2459                         break;
2460                 }
2461                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2462                                    sizeof(struct qeth_arp_cache_entry)))
2463                         rc = -EFAULT;
2464                 else
2465                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2466                 break;
2467         case SIOC_QETH_ARP_REMOVE_ENTRY:
2468                 if (!capable(CAP_NET_ADMIN)) {
2469                         rc = -EPERM;
2470                         break;
2471                 }
2472                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2473                                    sizeof(struct qeth_arp_cache_entry)))
2474                         rc = -EFAULT;
2475                 else
2476                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2477                 break;
2478         case SIOC_QETH_ARP_FLUSH_CACHE:
2479                 if (!capable(CAP_NET_ADMIN)) {
2480                         rc = -EPERM;
2481                         break;
2482                 }
2483                 rc = qeth_l3_arp_flush_cache(card);
2484                 break;
2485         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2486                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2487                 break;
2488         case SIOC_QETH_GET_CARD_TYPE:
2489                 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2490                     !card->info.guestlan)
2491                         return 1;
2492                 return 0;
2493                 break;
2494         case SIOCGMIIPHY:
2495                 mii_data = if_mii(rq);
2496                 mii_data->phy_id = 0;
2497                 break;
2498         case SIOCGMIIREG:
2499                 mii_data = if_mii(rq);
2500                 if (mii_data->phy_id != 0)
2501                         rc = -EINVAL;
2502                 else
2503                         mii_data->val_out = qeth_mdio_read(dev,
2504                                                         mii_data->phy_id,
2505                                                         mii_data->reg_num);
2506                 break;
2507         default:
2508                 rc = -EOPNOTSUPP;
2509         }
2510         if (rc)
2511                 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2512         return rc;
2513 }
2514
2515 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2516                 struct sk_buff *skb, int ipv, int cast_type)
2517 {
2518         memset(hdr, 0, sizeof(struct qeth_hdr));
2519         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2520         hdr->hdr.l3.ext_flags = 0;
2521
2522         /*
2523          * before we're going to overwrite this location with next hop ip.
2524          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2525          */
2526         if (card->vlangrp && vlan_tx_tag_present(skb)) {
2527                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2528                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2529                 else
2530                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2531                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2532         }
2533
2534         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2535         if (ipv == 4) {
2536                 /* IPv4 */
2537                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2538                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2539                 if ((skb->dst) && (skb->dst->neighbour)) {
2540                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2541                             *((u32 *) skb->dst->neighbour->primary_key);
2542                 } else {
2543                         /* fill in destination address used in ip header */
2544                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2545                                                         ip_hdr(skb)->daddr;
2546                 }
2547         } else if (ipv == 6) {
2548                 /* IPv6 */
2549                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2550                 if (card->info.type == QETH_CARD_TYPE_IQD)
2551                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2552                 if ((skb->dst) && (skb->dst->neighbour)) {
2553                         memcpy(hdr->hdr.l3.dest_addr,
2554                                skb->dst->neighbour->primary_key, 16);
2555                 } else {
2556                         /* fill in destination address used in ip header */
2557                         memcpy(hdr->hdr.l3.dest_addr,
2558                                &ipv6_hdr(skb)->daddr, 16);
2559                 }
2560         } else {
2561                 /* passthrough */
2562                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2563                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2564                         sizeof(__u16), skb->dev->broadcast, 6)) {
2565                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2566                                                 QETH_HDR_PASSTHRU;
2567                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2568                             skb->dev->broadcast, 6)) {
2569                         /* broadcast? */
2570                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2571                                                 QETH_HDR_PASSTHRU;
2572                 } else {
2573                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2574                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2575                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2576                 }
2577         }
2578 }
2579
2580 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2581 {
2582         int rc;
2583         u16 *tag;
2584         struct qeth_hdr *hdr = NULL;
2585         int elements_needed = 0;
2586         struct qeth_card *card = dev->ml_priv;
2587         struct sk_buff *new_skb = NULL;
2588         int ipv = qeth_get_ip_version(skb);
2589         int cast_type = qeth_get_cast_type(card, skb);
2590         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2591                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2592         int tx_bytes = skb->len;
2593         enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2594         struct qeth_eddp_context *ctx = NULL;
2595         int data_offset = -1;
2596
2597         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2598             (skb->protocol != htons(ETH_P_IPV6)) &&
2599             (skb->protocol != htons(ETH_P_IP)))
2600                         goto tx_drop;
2601
2602         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2603                 card->stats.tx_carrier_errors++;
2604                 goto tx_drop;
2605         }
2606
2607         if ((cast_type == RTN_BROADCAST) &&
2608             (card->info.broadcast_capable == 0))
2609                 goto tx_drop;
2610
2611         if (card->options.performance_stats) {
2612                 card->perf_stats.outbound_cnt++;
2613                 card->perf_stats.outbound_start_time = qeth_get_micros();
2614         }
2615
2616         if (skb_is_gso(skb))
2617                 large_send = card->options.large_send;
2618
2619         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2620             (skb_shinfo(skb)->nr_frags == 0)) {
2621                 new_skb = skb;
2622                 data_offset = ETH_HLEN;
2623                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2624                 if (!hdr)
2625                         goto tx_drop;
2626                 elements_needed++;
2627         } else {
2628                 /* create a clone with writeable headroom */
2629                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2630                                         + VLAN_HLEN);
2631                 if (!new_skb)
2632                         goto tx_drop;
2633         }
2634
2635         if (card->info.type == QETH_CARD_TYPE_IQD) {
2636                 if (data_offset < 0)
2637                         skb_pull(new_skb, ETH_HLEN);
2638         } else {
2639                 if (new_skb->protocol == htons(ETH_P_IP)) {
2640                         if (card->dev->type == ARPHRD_IEEE802_TR)
2641                                 skb_pull(new_skb, TR_HLEN);
2642                         else
2643                                 skb_pull(new_skb, ETH_HLEN);
2644                 }
2645
2646                 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2647                                 vlan_tx_tag_present(new_skb)) {
2648                         skb_push(new_skb, VLAN_HLEN);
2649                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2650                         skb_copy_to_linear_data_offset(new_skb, 4,
2651                                 new_skb->data + 8, 4);
2652                         skb_copy_to_linear_data_offset(new_skb, 8,
2653                                 new_skb->data + 12, 4);
2654                         tag = (u16 *)(new_skb->data + 12);
2655                         *tag = __constant_htons(ETH_P_8021Q);
2656                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2657                         new_skb->vlan_tci = 0;
2658                 }
2659         }
2660
2661         netif_stop_queue(dev);
2662
2663         /* fix hardware limitation: as long as we do not have sbal
2664          * chaining we can not send long frag lists so we temporary
2665          * switch to EDDP
2666          */
2667         if ((large_send == QETH_LARGE_SEND_TSO) &&
2668                 ((skb_shinfo(new_skb)->nr_frags + 2) > 16))
2669                 large_send = QETH_LARGE_SEND_EDDP;
2670
2671         if ((large_send == QETH_LARGE_SEND_TSO) &&
2672             (cast_type == RTN_UNSPEC)) {
2673                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2674                                                 sizeof(struct qeth_hdr_tso));
2675                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2676                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2677                 qeth_tso_fill_header(card, hdr, new_skb);
2678                 elements_needed++;
2679         } else {
2680                 if (data_offset < 0) {
2681                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2682                                                 sizeof(struct qeth_hdr));
2683                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2684                                                 cast_type);
2685                 } else {
2686                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2687                                                 cast_type);
2688                         hdr->hdr.l3.length = new_skb->len - data_offset;
2689                 }
2690         }
2691
2692         if (large_send == QETH_LARGE_SEND_EDDP) {
2693                 /* new_skb is not owned by a socket so we use skb to get
2694                  * the protocol
2695                  */
2696                 ctx = qeth_eddp_create_context(card, new_skb, hdr,
2697                                                 skb->sk->sk_protocol);
2698                 if (ctx == NULL) {
2699                         QETH_DBF_MESSAGE(2, "could not create eddp context\n");
2700                         goto tx_drop;
2701                 }
2702         } else {
2703                 int elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2704                                                  elements_needed);
2705                 if (!elems) {
2706                         if (data_offset >= 0)
2707                                 kmem_cache_free(qeth_core_header_cache, hdr);
2708                         goto tx_drop;
2709                 }
2710                 elements_needed += elems;
2711         }
2712
2713         if ((large_send == QETH_LARGE_SEND_NO) &&
2714             (new_skb->ip_summed == CHECKSUM_PARTIAL))
2715                 qeth_tx_csum(new_skb);
2716
2717         if (card->info.type != QETH_CARD_TYPE_IQD)
2718                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2719                                          elements_needed, ctx);
2720         else
2721                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2722                                         elements_needed, ctx, data_offset, 0);
2723
2724         if (!rc) {
2725                 card->stats.tx_packets++;
2726                 card->stats.tx_bytes += tx_bytes;
2727                 if (new_skb != skb)
2728                         dev_kfree_skb_any(skb);
2729                 if (card->options.performance_stats) {
2730                         if (large_send != QETH_LARGE_SEND_NO) {
2731                                 card->perf_stats.large_send_bytes += tx_bytes;
2732                                 card->perf_stats.large_send_cnt++;
2733                         }
2734                         if (skb_shinfo(new_skb)->nr_frags > 0) {
2735                                 card->perf_stats.sg_skbs_sent++;
2736                                 /* nr_frags + skb->data */
2737                                 card->perf_stats.sg_frags_sent +=
2738                                         skb_shinfo(new_skb)->nr_frags + 1;
2739                         }
2740                 }
2741
2742                 if (ctx != NULL) {
2743                         qeth_eddp_put_context(ctx);
2744                         dev_kfree_skb_any(new_skb);
2745                 }
2746         } else {
2747                 if (ctx != NULL)
2748                         qeth_eddp_put_context(ctx);
2749
2750                 if (data_offset >= 0)
2751                         kmem_cache_free(qeth_core_header_cache, hdr);
2752
2753                 if (rc == -EBUSY) {
2754                         if (new_skb != skb)
2755                                 dev_kfree_skb_any(new_skb);
2756                         return NETDEV_TX_BUSY;
2757                 } else
2758                         goto tx_drop;
2759         }
2760
2761         netif_wake_queue(dev);
2762         if (card->options.performance_stats)
2763                 card->perf_stats.outbound_time += qeth_get_micros() -
2764                         card->perf_stats.outbound_start_time;
2765         return rc;
2766
2767 tx_drop:
2768         card->stats.tx_dropped++;
2769         card->stats.tx_errors++;
2770         if ((new_skb != skb) && new_skb)
2771                 dev_kfree_skb_any(new_skb);
2772         dev_kfree_skb_any(skb);
2773         netif_wake_queue(dev);
2774         return NETDEV_TX_OK;
2775 }
2776
2777 static int qeth_l3_open(struct net_device *dev)
2778 {
2779         struct qeth_card *card = dev->ml_priv;
2780
2781         QETH_DBF_TEXT(TRACE, 4, "qethopen");
2782         if (card->state != CARD_STATE_SOFTSETUP)
2783                 return -ENODEV;
2784         card->data.state = CH_STATE_UP;
2785         card->state = CARD_STATE_UP;
2786         netif_start_queue(dev);
2787
2788         if (!card->lan_online && netif_carrier_ok(dev))
2789                 netif_carrier_off(dev);
2790         return 0;
2791 }
2792
2793 static int qeth_l3_stop(struct net_device *dev)
2794 {
2795         struct qeth_card *card = dev->ml_priv;
2796
2797         QETH_DBF_TEXT(TRACE, 4, "qethstop");
2798         netif_tx_disable(dev);
2799         if (card->state == CARD_STATE_UP)
2800                 card->state = CARD_STATE_SOFTSETUP;
2801         return 0;
2802 }
2803
2804 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2805 {
2806         struct qeth_card *card = dev->ml_priv;
2807
2808         return (card->options.checksum_type == HW_CHECKSUMMING);
2809 }
2810
2811 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2812 {
2813         struct qeth_card *card = dev->ml_priv;
2814         enum qeth_card_states old_state;
2815         enum qeth_checksum_types csum_type;
2816
2817         if ((card->state != CARD_STATE_UP) &&
2818             (card->state != CARD_STATE_DOWN))
2819                 return -EPERM;
2820
2821         if (data)
2822                 csum_type = HW_CHECKSUMMING;
2823         else
2824                 csum_type = SW_CHECKSUMMING;
2825
2826         if (card->options.checksum_type != csum_type) {
2827                 old_state = card->state;
2828                 if (card->state == CARD_STATE_UP)
2829                         __qeth_l3_set_offline(card->gdev, 1);
2830                 card->options.checksum_type = csum_type;
2831                 if (old_state == CARD_STATE_UP)
2832                         __qeth_l3_set_online(card->gdev, 1);
2833         }
2834         return 0;
2835 }
2836
2837 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2838 {
2839         struct qeth_card *card = dev->ml_priv;
2840
2841         if (data) {
2842                 if (card->options.large_send == QETH_LARGE_SEND_NO) {
2843                         if (card->info.type == QETH_CARD_TYPE_IQD)
2844                                 card->options.large_send = QETH_LARGE_SEND_EDDP;
2845                         else
2846                                 card->options.large_send = QETH_LARGE_SEND_TSO;
2847                         dev->features |= NETIF_F_TSO;
2848                 }
2849         } else {
2850                 dev->features &= ~NETIF_F_TSO;
2851                 card->options.large_send = QETH_LARGE_SEND_NO;
2852         }
2853         return 0;
2854 }
2855
2856 static struct ethtool_ops qeth_l3_ethtool_ops = {
2857         .get_link = ethtool_op_get_link,
2858         .get_tx_csum = ethtool_op_get_tx_csum,
2859         .set_tx_csum = ethtool_op_set_tx_hw_csum,
2860         .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
2861         .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
2862         .get_sg      = ethtool_op_get_sg,
2863         .set_sg      = ethtool_op_set_sg,
2864         .get_tso     = ethtool_op_get_tso,
2865         .set_tso     = qeth_l3_ethtool_set_tso,
2866         .get_strings = qeth_core_get_strings,
2867         .get_ethtool_stats = qeth_core_get_ethtool_stats,
2868         .get_stats_count = qeth_core_get_stats_count,
2869         .get_drvinfo = qeth_core_get_drvinfo,
2870         .get_settings = qeth_core_ethtool_get_settings,
2871 };
2872
2873 /*
2874  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2875  * NOARP on the netdevice is no option because it also turns off neighbor
2876  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2877  * arp resolution but we want the hard header (packet socket will work
2878  * e.g. tcpdump)
2879  */
2880 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2881 {
2882         n->nud_state = NUD_NOARP;
2883         memcpy(n->ha, "FAKELL", 6);
2884         n->output = n->ops->connected_output;
2885         return 0;
2886 }
2887
2888 static int
2889 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2890 {
2891         if (np->tbl->family == AF_INET)
2892                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2893
2894         return 0;
2895 }
2896
2897 static struct net_device_ops qeth_l3_netdev_ops = {
2898         .ndo_open               = qeth_l3_open,
2899         .ndo_stop               = qeth_l3_stop,
2900         .ndo_get_stats          = qeth_get_stats,
2901         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2902         .ndo_validate_addr      = eth_validate_addr,
2903         .ndo_set_multicast_list = qeth_l3_set_multicast_list,
2904         .ndo_do_ioctl           = qeth_l3_do_ioctl,
2905         .ndo_change_mtu         = qeth_change_mtu,
2906         .ndo_vlan_rx_register   = qeth_l3_vlan_rx_register,
2907         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2908         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2909         .ndo_tx_timeout         = qeth_tx_timeout,
2910 };
2911
2912 static int qeth_l3_setup_netdev(struct qeth_card *card)
2913 {
2914         if (card->info.type == QETH_CARD_TYPE_OSAE) {
2915                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2916                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2917 #ifdef CONFIG_TR
2918                         card->dev = alloc_trdev(0);
2919 #endif
2920                         if (!card->dev)
2921                                 return -ENODEV;
2922                 } else {
2923                         card->dev = alloc_etherdev(0);
2924                         if (!card->dev)
2925                                 return -ENODEV;
2926                         qeth_l3_netdev_ops.ndo_neigh_setup =
2927                                 qeth_l3_neigh_setup;
2928
2929                         /*IPv6 address autoconfiguration stuff*/
2930                         qeth_l3_get_unique_id(card);
2931                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2932                                 card->dev->dev_id = card->info.unique_id &
2933                                                          0xffff;
2934                 }
2935         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2936                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
2937                 if (!card->dev)
2938                         return -ENODEV;
2939                 card->dev->flags |= IFF_NOARP;
2940                 qeth_l3_iqd_read_initial_mac(card);
2941         } else
2942                 return -ENODEV;
2943
2944         card->dev->ml_priv = card;
2945         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2946         card->dev->mtu = card->info.initial_mtu;
2947         card->dev->netdev_ops = &qeth_l3_netdev_ops;
2948         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
2949         card->dev->features |=  NETIF_F_HW_VLAN_TX |
2950                                 NETIF_F_HW_VLAN_RX |
2951                                 NETIF_F_HW_VLAN_FILTER;
2952
2953         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2954         return register_netdev(card->dev);
2955 }
2956
2957 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
2958                 unsigned int qdio_err, unsigned int queue, int first_element,
2959                 int count, unsigned long card_ptr)
2960 {
2961         struct net_device *net_dev;
2962         struct qeth_card *card;
2963         struct qeth_qdio_buffer *buffer;
2964         int index;
2965         int i;
2966
2967         card = (struct qeth_card *) card_ptr;
2968         net_dev = card->dev;
2969         if (card->options.performance_stats) {
2970                 card->perf_stats.inbound_cnt++;
2971                 card->perf_stats.inbound_start_time = qeth_get_micros();
2972         }
2973         if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2974                 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
2975                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2976                 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
2977                                 first_element, count);
2978                 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
2979                 qeth_schedule_recovery(card);
2980                 return;
2981         }
2982         for (i = first_element; i < (first_element + count); ++i) {
2983                 index = i % QDIO_MAX_BUFFERS_PER_Q;
2984                 buffer = &card->qdio.in_q->bufs[index];
2985                 if (!(qdio_err &&
2986                       qeth_check_qdio_errors(buffer->buffer,
2987                                              qdio_err, "qinerr")))
2988                         qeth_l3_process_inbound_buffer(card, buffer, index);
2989                 /* clear buffer and give back to hardware */
2990                 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
2991                 qeth_queue_input_buffer(card, index);
2992         }
2993         if (card->options.performance_stats)
2994                 card->perf_stats.inbound_time += qeth_get_micros() -
2995                         card->perf_stats.inbound_start_time;
2996 }
2997
2998 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2999 {
3000         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3001
3002         qeth_l3_create_device_attributes(&gdev->dev);
3003         card->options.layer2 = 0;
3004         card->discipline.input_handler = (qdio_handler_t *)
3005                 qeth_l3_qdio_input_handler;
3006         card->discipline.output_handler = (qdio_handler_t *)
3007                 qeth_qdio_output_handler;
3008         card->discipline.recover = qeth_l3_recover;
3009         return 0;
3010 }
3011
3012 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3013 {
3014         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3015
3016         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3017
3018         if (cgdev->state == CCWGROUP_ONLINE) {
3019                 card->use_hard_stop = 1;
3020                 qeth_l3_set_offline(cgdev);
3021         }
3022
3023         if (card->dev) {
3024                 unregister_netdev(card->dev);
3025                 card->dev = NULL;
3026         }
3027
3028         qeth_l3_remove_device_attributes(&cgdev->dev);
3029         qeth_l3_clear_ip_list(card, 0, 0);
3030         qeth_l3_clear_ipato_list(card);
3031         return;
3032 }
3033
3034 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3035 {
3036         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3037         int rc = 0;
3038         enum qeth_card_states recover_flag;
3039
3040         BUG_ON(!card);
3041         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3042         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3043
3044         qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3045
3046         recover_flag = card->state;
3047         rc = ccw_device_set_online(CARD_RDEV(card));
3048         if (rc) {
3049                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3050                 return -EIO;
3051         }
3052         rc = ccw_device_set_online(CARD_WDEV(card));
3053         if (rc) {
3054                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3055                 return -EIO;
3056         }
3057         rc = ccw_device_set_online(CARD_DDEV(card));
3058         if (rc) {
3059                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3060                 return -EIO;
3061         }
3062
3063         rc = qeth_core_hardsetup_card(card);
3064         if (rc) {
3065                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3066                 goto out_remove;
3067         }
3068
3069         qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3070
3071         if (!card->dev && qeth_l3_setup_netdev(card))
3072                 goto out_remove;
3073
3074         card->state = CARD_STATE_HARDSETUP;
3075         qeth_print_status_message(card);
3076
3077         /* softsetup */
3078         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3079
3080         rc = qeth_send_startlan(card);
3081         if (rc) {
3082                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3083                 if (rc == 0xe080) {
3084                         dev_warn(&card->gdev->dev,
3085                                 "The LAN is offline\n");
3086                         card->lan_online = 0;
3087                 }
3088                 return rc;
3089         } else
3090                 card->lan_online = 1;
3091         qeth_set_large_send(card, card->options.large_send);
3092
3093         rc = qeth_l3_setadapter_parms(card);
3094         if (rc)
3095                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3096         rc = qeth_l3_start_ipassists(card);
3097         if (rc)
3098                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3099         rc = qeth_l3_setrouting_v4(card);
3100         if (rc)
3101                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3102         rc = qeth_l3_setrouting_v6(card);
3103         if (rc)
3104                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3105         netif_tx_disable(card->dev);
3106
3107         rc = qeth_init_qdio_queues(card);
3108         if (rc) {
3109                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3110                 goto out_remove;
3111         }
3112         card->state = CARD_STATE_SOFTSETUP;
3113         netif_carrier_on(card->dev);
3114
3115         qeth_set_allowed_threads(card, 0xffffffff, 0);
3116         if (recover_flag == CARD_STATE_RECOVER) {
3117                 if (recovery_mode)
3118                         qeth_l3_open(card->dev);
3119                 else {
3120                         rtnl_lock();
3121                         dev_open(card->dev);
3122                         rtnl_unlock();
3123                 }
3124                 qeth_l3_set_multicast_list(card->dev);
3125         }
3126         /* let user_space know that device is online */
3127         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3128         return 0;
3129 out_remove:
3130         card->use_hard_stop = 1;
3131         qeth_l3_stop_card(card, 0);
3132         ccw_device_set_offline(CARD_DDEV(card));
3133         ccw_device_set_offline(CARD_WDEV(card));
3134         ccw_device_set_offline(CARD_RDEV(card));
3135         if (recover_flag == CARD_STATE_RECOVER)
3136                 card->state = CARD_STATE_RECOVER;
3137         else
3138                 card->state = CARD_STATE_DOWN;
3139         return -ENODEV;
3140 }
3141
3142 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3143 {
3144         return __qeth_l3_set_online(gdev, 0);
3145 }
3146
3147 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3148                         int recovery_mode)
3149 {
3150         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3151         int rc = 0, rc2 = 0, rc3 = 0;
3152         enum qeth_card_states recover_flag;
3153
3154         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3155         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3156
3157         if (card->dev && netif_carrier_ok(card->dev))
3158                 netif_carrier_off(card->dev);
3159         recover_flag = card->state;
3160         qeth_l3_stop_card(card, recovery_mode);
3161         rc  = ccw_device_set_offline(CARD_DDEV(card));
3162         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3163         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3164         if (!rc)
3165                 rc = (rc2) ? rc2 : rc3;
3166         if (rc)
3167                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3168         if (recover_flag == CARD_STATE_UP)
3169                 card->state = CARD_STATE_RECOVER;
3170         /* let user_space know that device is offline */
3171         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3172         return 0;
3173 }
3174
3175 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3176 {
3177         return __qeth_l3_set_offline(cgdev, 0);
3178 }
3179
3180 static int qeth_l3_recover(void *ptr)
3181 {
3182         struct qeth_card *card;
3183         int rc = 0;
3184
3185         card = (struct qeth_card *) ptr;
3186         QETH_DBF_TEXT(TRACE, 2, "recover1");
3187         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3188         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3189                 return 0;
3190         QETH_DBF_TEXT(TRACE, 2, "recover2");
3191         dev_warn(&card->gdev->dev,
3192                 "A recovery process has been started for the device\n");
3193         card->use_hard_stop = 1;
3194         __qeth_l3_set_offline(card->gdev, 1);
3195         rc = __qeth_l3_set_online(card->gdev, 1);
3196         /* don't run another scheduled recovery */
3197         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3198         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3199         if (!rc)
3200                 dev_info(&card->gdev->dev,
3201                         "Device successfully recovered!\n");
3202         else {
3203                 rtnl_lock();
3204                 dev_close(card->dev);
3205                 rtnl_unlock();
3206                 dev_warn(&card->gdev->dev, "The qeth device driver "
3207                         "failed to recover an error on the device\n");
3208         }
3209         return 0;
3210 }
3211
3212 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3213 {
3214         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3215         qeth_l3_clear_ip_list(card, 0, 0);
3216         qeth_qdio_clear_card(card, 0);
3217         qeth_clear_qdio_buffers(card);
3218 }
3219
3220 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3221         .probe = qeth_l3_probe_device,
3222         .remove = qeth_l3_remove_device,
3223         .set_online = qeth_l3_set_online,
3224         .set_offline = qeth_l3_set_offline,
3225         .shutdown = qeth_l3_shutdown,
3226 };
3227 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3228
3229 static int qeth_l3_ip_event(struct notifier_block *this,
3230                             unsigned long event, void *ptr)
3231 {
3232         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3233         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3234         struct qeth_ipaddr *addr;
3235         struct qeth_card *card;
3236
3237         if (dev_net(dev) != &init_net)
3238                 return NOTIFY_DONE;
3239
3240         QETH_DBF_TEXT(TRACE, 3, "ipevent");
3241         card = qeth_l3_get_card_from_dev(dev);
3242         if (!card)
3243                 return NOTIFY_DONE;
3244
3245         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3246         if (addr != NULL) {
3247                 addr->u.a4.addr = ifa->ifa_address;
3248                 addr->u.a4.mask = ifa->ifa_mask;
3249                 addr->type = QETH_IP_TYPE_NORMAL;
3250         } else
3251                 goto out;
3252
3253         switch (event) {
3254         case NETDEV_UP:
3255                 if (!qeth_l3_add_ip(card, addr))
3256                         kfree(addr);
3257                 break;
3258         case NETDEV_DOWN:
3259                 if (!qeth_l3_delete_ip(card, addr))
3260                         kfree(addr);
3261                 break;
3262         default:
3263                 break;
3264         }
3265         qeth_l3_set_ip_addr_list(card);
3266 out:
3267         return NOTIFY_DONE;
3268 }
3269
3270 static struct notifier_block qeth_l3_ip_notifier = {
3271         qeth_l3_ip_event,
3272         NULL,
3273 };
3274
3275 #ifdef CONFIG_QETH_IPV6
3276 /**
3277  * IPv6 event handler
3278  */
3279 static int qeth_l3_ip6_event(struct notifier_block *this,
3280                              unsigned long event, void *ptr)
3281 {
3282         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3283         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3284         struct qeth_ipaddr *addr;
3285         struct qeth_card *card;
3286
3287         QETH_DBF_TEXT(TRACE, 3, "ip6event");
3288
3289         card = qeth_l3_get_card_from_dev(dev);
3290         if (!card)
3291                 return NOTIFY_DONE;
3292         if (!qeth_is_supported(card, IPA_IPV6))
3293                 return NOTIFY_DONE;
3294
3295         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3296         if (addr != NULL) {
3297                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3298                 addr->u.a6.pfxlen = ifa->prefix_len;
3299                 addr->type = QETH_IP_TYPE_NORMAL;
3300         } else
3301                 goto out;
3302
3303         switch (event) {
3304         case NETDEV_UP:
3305                 if (!qeth_l3_add_ip(card, addr))
3306                         kfree(addr);
3307                 break;
3308         case NETDEV_DOWN:
3309                 if (!qeth_l3_delete_ip(card, addr))
3310                         kfree(addr);
3311                 break;
3312         default:
3313                 break;
3314         }
3315         qeth_l3_set_ip_addr_list(card);
3316 out:
3317         return NOTIFY_DONE;
3318 }
3319
3320 static struct notifier_block qeth_l3_ip6_notifier = {
3321         qeth_l3_ip6_event,
3322         NULL,
3323 };
3324 #endif
3325
3326 static int qeth_l3_register_notifiers(void)
3327 {
3328         int rc;
3329
3330         QETH_DBF_TEXT(TRACE, 5, "regnotif");
3331         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3332         if (rc)
3333                 return rc;
3334 #ifdef CONFIG_QETH_IPV6
3335         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3336         if (rc) {
3337                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3338                 return rc;
3339         }
3340 #else
3341         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3342 #endif
3343         return 0;
3344 }
3345
3346 static void qeth_l3_unregister_notifiers(void)
3347 {
3348
3349         QETH_DBF_TEXT(TRACE, 5, "unregnot");
3350         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3351 #ifdef CONFIG_QETH_IPV6
3352         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3353 #endif /* QETH_IPV6 */
3354 }
3355
3356 static int __init qeth_l3_init(void)
3357 {
3358         int rc = 0;
3359
3360         pr_info("register layer 3 discipline\n");
3361         rc = qeth_l3_register_notifiers();
3362         return rc;
3363 }
3364
3365 static void __exit qeth_l3_exit(void)
3366 {
3367         qeth_l3_unregister_notifiers();
3368         pr_info("unregister layer 3 discipline\n");
3369 }
3370
3371 module_init(qeth_l3_init);
3372 module_exit(qeth_l3_exit);
3373 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3374 MODULE_DESCRIPTION("qeth layer 3 discipline");
3375 MODULE_LICENSE("GPL");