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qeth_l3_main.c
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1 /*
2  * Copyright IBM Corp. 2007, 2009
3  * Author(s): Utz Bacher <[email protected]>,
4  * Frank Pavlic <[email protected]>,
5  * Thomas Spatzier <[email protected]>,
6  * Frank Blaschka <[email protected]>
7  */
8 
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11 
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/bitops.h>
15 #include <linux/string.h>
16 #include <linux/errno.h>
17 #include <linux/kernel.h>
18 #include <linux/etherdevice.h>
19 #include <linux/mii.h>
20 #include <linux/ip.h>
21 #include <linux/ipv6.h>
22 #include <linux/inetdevice.h>
23 #include <linux/igmp.h>
24 #include <linux/slab.h>
25 #include <linux/if_vlan.h>
26 
27 #include <net/ip.h>
28 #include <net/arp.h>
29 #include <net/route.h>
30 #include <net/ip6_fib.h>
31 #include <net/ip6_checksum.h>
32 #include <net/iucv/af_iucv.h>
33 
34 #include "qeth_l3.h"
35 
36 
37 static int qeth_l3_set_offline(struct ccwgroup_device *);
38 static int qeth_l3_recover(void *);
39 static int qeth_l3_stop(struct net_device *);
40 static void qeth_l3_set_multicast_list(struct net_device *);
41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
42 static int qeth_l3_register_addr_entry(struct qeth_card *,
43  struct qeth_ipaddr *);
44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
45  struct qeth_ipaddr *);
46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
48 
49 static int qeth_l3_isxdigit(char *buf)
50 {
51  while (*buf) {
52  if (!isxdigit(*buf++))
53  return 0;
54  }
55  return 1;
56 }
57 
58 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
59 {
60  sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
61 }
62 
63 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
64 {
65  int count = 0, rc = 0;
66  int in[4];
67  char c;
68 
69  rc = sscanf(buf, "%u.%u.%u.%u%c",
70  &in[0], &in[1], &in[2], &in[3], &c);
71  if (rc != 4 && (rc != 5 || c != '\n'))
72  return -EINVAL;
73  for (count = 0; count < 4; count++) {
74  if (in[count] > 255)
75  return -EINVAL;
76  addr[count] = in[count];
77  }
78  return 0;
79 }
80 
81 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
82 {
83  sprintf(buf, "%pI6", addr);
84 }
85 
86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
87 {
88  const char *end, *end_tmp, *start;
89  __u16 *in;
90  char num[5];
91  int num2, cnt, out, found, save_cnt;
92  unsigned short in_tmp[8] = {0, };
93 
94  cnt = out = found = save_cnt = num2 = 0;
95  end = start = buf;
96  in = (__u16 *) addr;
97  memset(in, 0, 16);
98  while (*end) {
99  end = strchr(start, ':');
100  if (end == NULL) {
101  end = buf + strlen(buf);
102  end_tmp = strchr(start, '\n');
103  if (end_tmp != NULL)
104  end = end_tmp;
105  out = 1;
106  }
107  if ((end - start)) {
108  memset(num, 0, 5);
109  if ((end - start) > 4)
110  return -EINVAL;
111  memcpy(num, start, end - start);
112  if (!qeth_l3_isxdigit(num))
113  return -EINVAL;
114  sscanf(start, "%x", &num2);
115  if (found)
116  in_tmp[save_cnt++] = num2;
117  else
118  in[cnt++] = num2;
119  if (out)
120  break;
121  } else {
122  if (found)
123  return -EINVAL;
124  found = 1;
125  }
126  start = ++end;
127  }
128  if (cnt + save_cnt > 8)
129  return -EINVAL;
130  cnt = 7;
131  while (save_cnt)
132  in[cnt--] = in_tmp[--save_cnt];
133  return 0;
134 }
135 
136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
137  char *buf)
138 {
139  if (proto == QETH_PROT_IPV4)
140  qeth_l3_ipaddr4_to_string(addr, buf);
141  else if (proto == QETH_PROT_IPV6)
142  qeth_l3_ipaddr6_to_string(addr, buf);
143 }
144 
145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
146  __u8 *addr)
147 {
148  if (proto == QETH_PROT_IPV4)
149  return qeth_l3_string_to_ipaddr4(buf, addr);
150  else if (proto == QETH_PROT_IPV6)
151  return qeth_l3_string_to_ipaddr6(buf, addr);
152  else
153  return -EINVAL;
154 }
155 
156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
157 {
158  int i, j;
159  u8 octet;
160 
161  for (i = 0; i < len; ++i) {
162  octet = addr[i];
163  for (j = 7; j >= 0; --j) {
164  bits[i*8 + j] = octet & 1;
165  octet >>= 1;
166  }
167  }
168 }
169 
170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
171  struct qeth_ipaddr *addr)
172 {
173  struct qeth_ipato_entry *ipatoe;
174  u8 addr_bits[128] = {0, };
175  u8 ipatoe_bits[128] = {0, };
176  int rc = 0;
177 
178  if (!card->ipato.enabled)
179  return 0;
180 
181  qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
182  (addr->proto == QETH_PROT_IPV4)? 4:16);
183  list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
184  if (addr->proto != ipatoe->proto)
185  continue;
186  qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
187  (ipatoe->proto == QETH_PROT_IPV4) ?
188  4 : 16);
189  if (addr->proto == QETH_PROT_IPV4)
190  rc = !memcmp(addr_bits, ipatoe_bits,
191  min(32, ipatoe->mask_bits));
192  else
193  rc = !memcmp(addr_bits, ipatoe_bits,
194  min(128, ipatoe->mask_bits));
195  if (rc)
196  break;
197  }
198  /* invert? */
199  if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
200  rc = !rc;
201  else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
202  rc = !rc;
203 
204  return rc;
205 }
206 
207 /*
208  * Add IP to be added to todo list. If there is already an "add todo"
209  * in this list we just incremenent the reference count.
210  * Returns 0 if we just incremented reference count.
211  */
212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
213  struct qeth_ipaddr *addr, int add)
214 {
215  struct qeth_ipaddr *tmp, *t;
216  int found = 0;
217 
218  if (card->options.sniffer)
219  return 0;
220  list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
221  if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
222  (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
223  return 0;
224  if ((tmp->proto == QETH_PROT_IPV4) &&
225  (addr->proto == QETH_PROT_IPV4) &&
226  (tmp->type == addr->type) &&
227  (tmp->is_multicast == addr->is_multicast) &&
228  (tmp->u.a4.addr == addr->u.a4.addr) &&
229  (tmp->u.a4.mask == addr->u.a4.mask)) {
230  found = 1;
231  break;
232  }
233  if ((tmp->proto == QETH_PROT_IPV6) &&
234  (addr->proto == QETH_PROT_IPV6) &&
235  (tmp->type == addr->type) &&
236  (tmp->is_multicast == addr->is_multicast) &&
237  (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
238  (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
239  sizeof(struct in6_addr)) == 0)) {
240  found = 1;
241  break;
242  }
243  }
244  if (found) {
245  if (addr->users != 0)
246  tmp->users += addr->users;
247  else
248  tmp->users += add ? 1 : -1;
249  if (tmp->users == 0) {
250  list_del(&tmp->entry);
251  kfree(tmp);
252  }
253  return 0;
254  } else {
255  if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
256  list_add(&addr->entry, card->ip_tbd_list);
257  else {
258  if (addr->users == 0)
259  addr->users += add ? 1 : -1;
260  if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
261  qeth_l3_is_addr_covered_by_ipato(card, addr)) {
262  QETH_CARD_TEXT(card, 2, "tkovaddr");
263  addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
264  }
265  list_add_tail(&addr->entry, card->ip_tbd_list);
266  }
267  return 1;
268  }
269 }
270 
271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
272 {
273  unsigned long flags;
274  int rc = 0;
275 
276  QETH_CARD_TEXT(card, 4, "delip");
277 
278  if (addr->proto == QETH_PROT_IPV4)
279  QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
280  else {
281  QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
282  QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
283  }
284  spin_lock_irqsave(&card->ip_lock, flags);
285  rc = __qeth_l3_insert_ip_todo(card, addr, 0);
286  spin_unlock_irqrestore(&card->ip_lock, flags);
287  return rc;
288 }
289 
290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
291 {
292  unsigned long flags;
293  int rc = 0;
294 
295  QETH_CARD_TEXT(card, 4, "addip");
296  if (addr->proto == QETH_PROT_IPV4)
297  QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
298  else {
299  QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
300  QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
301  }
302  spin_lock_irqsave(&card->ip_lock, flags);
303  rc = __qeth_l3_insert_ip_todo(card, addr, 1);
304  spin_unlock_irqrestore(&card->ip_lock, flags);
305  return rc;
306 }
307 
308 
309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
310  enum qeth_prot_versions prot)
311 {
312  struct qeth_ipaddr *addr;
313 
314  addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
315  if (addr == NULL) {
316  return NULL;
317  }
318  addr->type = QETH_IP_TYPE_NORMAL;
319  addr->proto = prot;
320  return addr;
321 }
322 
323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
324 {
325  struct qeth_ipaddr *iptodo;
326  unsigned long flags;
327 
328  QETH_CARD_TEXT(card, 4, "delmc");
329  iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
330  if (!iptodo) {
331  QETH_CARD_TEXT(card, 2, "dmcnomem");
332  return;
333  }
334  iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
335  spin_lock_irqsave(&card->ip_lock, flags);
336  if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
337  kfree(iptodo);
338  spin_unlock_irqrestore(&card->ip_lock, flags);
339 }
340 
341 /*
342  * Add/remove address to/from card's ip list, i.e. try to add or remove
343  * reference to/from an IP address that is already registered on the card.
344  * Returns:
345  * 0 address was on card and its reference count has been adjusted,
346  * but is still > 0, so nothing has to be done
347  * also returns 0 if card was not on card and the todo was to delete
348  * the address -> there is also nothing to be done
349  * 1 address was not on card and the todo is to add it to the card's ip
350  * list
351  * -1 address was on card and its reference count has been decremented
352  * to <= 0 by the todo -> address must be removed from card
353  */
354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
355  struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
356 {
357  struct qeth_ipaddr *addr;
358  int found = 0;
359 
360  list_for_each_entry(addr, &card->ip_list, entry) {
361  if ((addr->proto == QETH_PROT_IPV4) &&
362  (todo->proto == QETH_PROT_IPV4) &&
363  (addr->type == todo->type) &&
364  (addr->u.a4.addr == todo->u.a4.addr) &&
365  (addr->u.a4.mask == todo->u.a4.mask)) {
366  found = 1;
367  break;
368  }
369  if ((addr->proto == QETH_PROT_IPV6) &&
370  (todo->proto == QETH_PROT_IPV6) &&
371  (addr->type == todo->type) &&
372  (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
373  (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
374  sizeof(struct in6_addr)) == 0)) {
375  found = 1;
376  break;
377  }
378  }
379  if (found) {
380  addr->users += todo->users;
381  if (addr->users <= 0) {
382  *__addr = addr;
383  return -1;
384  } else {
385  /* for VIPA and RXIP limit refcount to 1 */
386  if (addr->type != QETH_IP_TYPE_NORMAL)
387  addr->users = 1;
388  return 0;
389  }
390  }
391  if (todo->users > 0) {
392  /* for VIPA and RXIP limit refcount to 1 */
393  if (todo->type != QETH_IP_TYPE_NORMAL)
394  todo->users = 1;
395  return 1;
396  } else
397  return 0;
398 }
399 
400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
401  unsigned long *flags)
402 {
403  struct list_head fail_list;
404  struct qeth_ipaddr *addr, *tmp;
405  int rc;
406 
407  INIT_LIST_HEAD(&fail_list);
408 again:
409  list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
410  if (addr->is_multicast) {
411  list_del(&addr->entry);
412  spin_unlock_irqrestore(&card->ip_lock, *flags);
413  rc = qeth_l3_deregister_addr_entry(card, addr);
414  spin_lock_irqsave(&card->ip_lock, *flags);
415  if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
416  kfree(addr);
417  else
418  list_add_tail(&addr->entry, &fail_list);
419  goto again;
420  }
421  }
422  list_splice(&fail_list, &card->ip_list);
423 }
424 
425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
426 {
427  struct list_head *tbd_list;
428  struct qeth_ipaddr *todo, *addr;
429  unsigned long flags;
430  int rc;
431 
432  QETH_CARD_TEXT(card, 2, "sdiplist");
433  QETH_CARD_HEX(card, 2, &card, sizeof(void *));
434 
435  if ((card->state != CARD_STATE_UP &&
436  card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
437  return;
438  }
439 
440  spin_lock_irqsave(&card->ip_lock, flags);
441  tbd_list = card->ip_tbd_list;
442  card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
443  if (!card->ip_tbd_list) {
444  QETH_CARD_TEXT(card, 0, "silnomem");
445  card->ip_tbd_list = tbd_list;
446  spin_unlock_irqrestore(&card->ip_lock, flags);
447  return;
448  } else
449  INIT_LIST_HEAD(card->ip_tbd_list);
450 
451  while (!list_empty(tbd_list)) {
452  todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
453  list_del(&todo->entry);
454  if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
455  __qeth_l3_delete_all_mc(card, &flags);
456  kfree(todo);
457  continue;
458  }
459  rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
460  if (rc == 0) {
461  /* nothing to be done; only adjusted refcount */
462  kfree(todo);
463  } else if (rc == 1) {
464  /* new entry to be added to on-card list */
465  spin_unlock_irqrestore(&card->ip_lock, flags);
466  rc = qeth_l3_register_addr_entry(card, todo);
467  spin_lock_irqsave(&card->ip_lock, flags);
468  if (!rc || (rc == IPA_RC_LAN_OFFLINE))
469  list_add_tail(&todo->entry, &card->ip_list);
470  else
471  kfree(todo);
472  } else if (rc == -1) {
473  /* on-card entry to be removed */
474  list_del_init(&addr->entry);
475  spin_unlock_irqrestore(&card->ip_lock, flags);
476  rc = qeth_l3_deregister_addr_entry(card, addr);
477  spin_lock_irqsave(&card->ip_lock, flags);
478  if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
479  kfree(addr);
480  else
481  list_add_tail(&addr->entry, &card->ip_list);
482  kfree(todo);
483  }
484  }
485  spin_unlock_irqrestore(&card->ip_lock, flags);
486  kfree(tbd_list);
487 }
488 
489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
490 {
491  struct qeth_ipaddr *addr, *tmp;
492  unsigned long flags;
493 
494  QETH_CARD_TEXT(card, 4, "clearip");
495  if (recover && card->options.sniffer)
496  return;
497  spin_lock_irqsave(&card->ip_lock, flags);
498  /* clear todo list */
499  list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
500  list_del(&addr->entry);
501  kfree(addr);
502  }
503 
504  while (!list_empty(&card->ip_list)) {
505  addr = list_entry(card->ip_list.next,
506  struct qeth_ipaddr, entry);
507  list_del_init(&addr->entry);
508  if (!recover || addr->is_multicast) {
509  kfree(addr);
510  continue;
511  }
512  list_add_tail(&addr->entry, card->ip_tbd_list);
513  }
514  spin_unlock_irqrestore(&card->ip_lock, flags);
515 }
516 
517 static int qeth_l3_address_exists_in_list(struct list_head *list,
518  struct qeth_ipaddr *addr, int same_type)
519 {
520  struct qeth_ipaddr *tmp;
521 
522  list_for_each_entry(tmp, list, entry) {
523  if ((tmp->proto == QETH_PROT_IPV4) &&
524  (addr->proto == QETH_PROT_IPV4) &&
525  ((same_type && (tmp->type == addr->type)) ||
526  (!same_type && (tmp->type != addr->type))) &&
527  (tmp->u.a4.addr == addr->u.a4.addr))
528  return 1;
529 
530  if ((tmp->proto == QETH_PROT_IPV6) &&
531  (addr->proto == QETH_PROT_IPV6) &&
532  ((same_type && (tmp->type == addr->type)) ||
533  (!same_type && (tmp->type != addr->type))) &&
534  (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
535  sizeof(struct in6_addr)) == 0))
536  return 1;
537 
538  }
539  return 0;
540 }
541 
542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
543  struct qeth_ipaddr *addr, int ipacmd)
544 {
545  int rc;
546  struct qeth_cmd_buffer *iob;
547  struct qeth_ipa_cmd *cmd;
548 
549  QETH_CARD_TEXT(card, 4, "setdelmc");
550 
551  iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
552  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
553  memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
554  if (addr->proto == QETH_PROT_IPV6)
555  memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
556  sizeof(struct in6_addr));
557  else
558  memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
559 
560  rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
561 
562  return rc;
563 }
564 
565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
566 {
567  int i, j;
568  for (i = 0; i < 16; i++) {
569  j = (len) - (i * 8);
570  if (j >= 8)
571  netmask[i] = 0xff;
572  else if (j > 0)
573  netmask[i] = (u8)(0xFF00 >> j);
574  else
575  netmask[i] = 0;
576  }
577 }
578 
579 static int qeth_l3_send_setdelip(struct qeth_card *card,
580  struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
581 {
582  int rc;
583  struct qeth_cmd_buffer *iob;
584  struct qeth_ipa_cmd *cmd;
585  __u8 netmask[16];
586 
587  QETH_CARD_TEXT(card, 4, "setdelip");
588  QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
589 
590  iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
591  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
592  if (addr->proto == QETH_PROT_IPV6) {
593  memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
594  sizeof(struct in6_addr));
595  qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
596  memcpy(cmd->data.setdelip6.mask, netmask,
597  sizeof(struct in6_addr));
598  cmd->data.setdelip6.flags = flags;
599  } else {
600  memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
601  memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
602  cmd->data.setdelip4.flags = flags;
603  }
604 
605  rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
606 
607  return rc;
608 }
609 
610 static int qeth_l3_send_setrouting(struct qeth_card *card,
611  enum qeth_routing_types type, enum qeth_prot_versions prot)
612 {
613  int rc;
614  struct qeth_ipa_cmd *cmd;
615  struct qeth_cmd_buffer *iob;
616 
617  QETH_CARD_TEXT(card, 4, "setroutg");
618  iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
619  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
620  cmd->data.setrtg.type = (type);
621  rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
622 
623  return rc;
624 }
625 
626 static void qeth_l3_correct_routing_type(struct qeth_card *card,
627  enum qeth_routing_types *type, enum qeth_prot_versions prot)
628 {
629  if (card->info.type == QETH_CARD_TYPE_IQD) {
630  switch (*type) {
631  case NO_ROUTER:
632  case PRIMARY_CONNECTOR:
633  case SECONDARY_CONNECTOR:
634  case MULTICAST_ROUTER:
635  return;
636  default:
637  goto out_inval;
638  }
639  } else {
640  switch (*type) {
641  case NO_ROUTER:
642  case PRIMARY_ROUTER:
643  case SECONDARY_ROUTER:
644  return;
645  case MULTICAST_ROUTER:
646  if (qeth_is_ipafunc_supported(card, prot,
647  IPA_OSA_MC_ROUTER))
648  return;
649  default:
650  goto out_inval;
651  }
652  }
653 out_inval:
654  *type = NO_ROUTER;
655 }
656 
657 int qeth_l3_setrouting_v4(struct qeth_card *card)
658 {
659  int rc;
660 
661  QETH_CARD_TEXT(card, 3, "setrtg4");
662 
663  qeth_l3_correct_routing_type(card, &card->options.route4.type,
664  QETH_PROT_IPV4);
665 
666  rc = qeth_l3_send_setrouting(card, card->options.route4.type,
667  QETH_PROT_IPV4);
668  if (rc) {
669  card->options.route4.type = NO_ROUTER;
670  QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
671  " on %s. Type set to 'no router'.\n", rc,
672  QETH_CARD_IFNAME(card));
673  }
674  return rc;
675 }
676 
677 int qeth_l3_setrouting_v6(struct qeth_card *card)
678 {
679  int rc = 0;
680 
681  QETH_CARD_TEXT(card, 3, "setrtg6");
682 #ifdef CONFIG_QETH_IPV6
683 
684  if (!qeth_is_supported(card, IPA_IPV6))
685  return 0;
686  qeth_l3_correct_routing_type(card, &card->options.route6.type,
687  QETH_PROT_IPV6);
688 
689  rc = qeth_l3_send_setrouting(card, card->options.route6.type,
690  QETH_PROT_IPV6);
691  if (rc) {
692  card->options.route6.type = NO_ROUTER;
693  QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
694  " on %s. Type set to 'no router'.\n", rc,
695  QETH_CARD_IFNAME(card));
696  }
697 #endif
698  return rc;
699 }
700 
701 /*
702  * IP address takeover related functions
703  */
704 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
705 {
706 
707  struct qeth_ipato_entry *ipatoe, *tmp;
708  unsigned long flags;
709 
710  spin_lock_irqsave(&card->ip_lock, flags);
711  list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
712  list_del(&ipatoe->entry);
713  kfree(ipatoe);
714  }
715  spin_unlock_irqrestore(&card->ip_lock, flags);
716 }
717 
718 int qeth_l3_add_ipato_entry(struct qeth_card *card,
719  struct qeth_ipato_entry *new)
720 {
721  struct qeth_ipato_entry *ipatoe;
722  unsigned long flags;
723  int rc = 0;
724 
725  QETH_CARD_TEXT(card, 2, "addipato");
726  spin_lock_irqsave(&card->ip_lock, flags);
727  list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
728  if (ipatoe->proto != new->proto)
729  continue;
730  if (!memcmp(ipatoe->addr, new->addr,
731  (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
732  (ipatoe->mask_bits == new->mask_bits)) {
733  rc = -EEXIST;
734  break;
735  }
736  }
737  if (!rc)
738  list_add_tail(&new->entry, &card->ipato.entries);
739 
740  spin_unlock_irqrestore(&card->ip_lock, flags);
741  return rc;
742 }
743 
744 void qeth_l3_del_ipato_entry(struct qeth_card *card,
745  enum qeth_prot_versions proto, u8 *addr, int mask_bits)
746 {
747  struct qeth_ipato_entry *ipatoe, *tmp;
748  unsigned long flags;
749 
750  QETH_CARD_TEXT(card, 2, "delipato");
751  spin_lock_irqsave(&card->ip_lock, flags);
752  list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
753  if (ipatoe->proto != proto)
754  continue;
755  if (!memcmp(ipatoe->addr, addr,
756  (proto == QETH_PROT_IPV4)? 4:16) &&
757  (ipatoe->mask_bits == mask_bits)) {
758  list_del(&ipatoe->entry);
759  kfree(ipatoe);
760  }
761  }
762  spin_unlock_irqrestore(&card->ip_lock, flags);
763 }
764 
765 /*
766  * VIPA related functions
767  */
768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
769  const u8 *addr)
770 {
771  struct qeth_ipaddr *ipaddr;
772  unsigned long flags;
773  int rc = 0;
774 
775  ipaddr = qeth_l3_get_addr_buffer(proto);
776  if (ipaddr) {
777  if (proto == QETH_PROT_IPV4) {
778  QETH_CARD_TEXT(card, 2, "addvipa4");
779  memcpy(&ipaddr->u.a4.addr, addr, 4);
780  ipaddr->u.a4.mask = 0;
781  } else if (proto == QETH_PROT_IPV6) {
782  QETH_CARD_TEXT(card, 2, "addvipa6");
783  memcpy(&ipaddr->u.a6.addr, addr, 16);
784  ipaddr->u.a6.pfxlen = 0;
785  }
786  ipaddr->type = QETH_IP_TYPE_VIPA;
787  ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
788  ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
789  } else
790  return -ENOMEM;
791  spin_lock_irqsave(&card->ip_lock, flags);
792  if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
793  qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
794  rc = -EEXIST;
795  spin_unlock_irqrestore(&card->ip_lock, flags);
796  if (rc) {
797  kfree(ipaddr);
798  return rc;
799  }
800  if (!qeth_l3_add_ip(card, ipaddr))
801  kfree(ipaddr);
802  qeth_l3_set_ip_addr_list(card);
803  return rc;
804 }
805 
806 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
807  const u8 *addr)
808 {
809  struct qeth_ipaddr *ipaddr;
810 
811  ipaddr = qeth_l3_get_addr_buffer(proto);
812  if (ipaddr) {
813  if (proto == QETH_PROT_IPV4) {
814  QETH_CARD_TEXT(card, 2, "delvipa4");
815  memcpy(&ipaddr->u.a4.addr, addr, 4);
816  ipaddr->u.a4.mask = 0;
817  } else if (proto == QETH_PROT_IPV6) {
818  QETH_CARD_TEXT(card, 2, "delvipa6");
819  memcpy(&ipaddr->u.a6.addr, addr, 16);
820  ipaddr->u.a6.pfxlen = 0;
821  }
822  ipaddr->type = QETH_IP_TYPE_VIPA;
823  } else
824  return;
825  if (!qeth_l3_delete_ip(card, ipaddr))
826  kfree(ipaddr);
827  qeth_l3_set_ip_addr_list(card);
828 }
829 
830 /*
831  * proxy ARP related functions
832  */
833 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
834  const u8 *addr)
835 {
836  struct qeth_ipaddr *ipaddr;
837  unsigned long flags;
838  int rc = 0;
839 
840  ipaddr = qeth_l3_get_addr_buffer(proto);
841  if (ipaddr) {
842  if (proto == QETH_PROT_IPV4) {
843  QETH_CARD_TEXT(card, 2, "addrxip4");
844  memcpy(&ipaddr->u.a4.addr, addr, 4);
845  ipaddr->u.a4.mask = 0;
846  } else if (proto == QETH_PROT_IPV6) {
847  QETH_CARD_TEXT(card, 2, "addrxip6");
848  memcpy(&ipaddr->u.a6.addr, addr, 16);
849  ipaddr->u.a6.pfxlen = 0;
850  }
851  ipaddr->type = QETH_IP_TYPE_RXIP;
852  ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
853  ipaddr->del_flags = 0;
854  } else
855  return -ENOMEM;
856  spin_lock_irqsave(&card->ip_lock, flags);
857  if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
858  qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
859  rc = -EEXIST;
860  spin_unlock_irqrestore(&card->ip_lock, flags);
861  if (rc) {
862  kfree(ipaddr);
863  return rc;
864  }
865  if (!qeth_l3_add_ip(card, ipaddr))
866  kfree(ipaddr);
867  qeth_l3_set_ip_addr_list(card);
868  return 0;
869 }
870 
871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
872  const u8 *addr)
873 {
874  struct qeth_ipaddr *ipaddr;
875 
876  ipaddr = qeth_l3_get_addr_buffer(proto);
877  if (ipaddr) {
878  if (proto == QETH_PROT_IPV4) {
879  QETH_CARD_TEXT(card, 2, "addrxip4");
880  memcpy(&ipaddr->u.a4.addr, addr, 4);
881  ipaddr->u.a4.mask = 0;
882  } else if (proto == QETH_PROT_IPV6) {
883  QETH_CARD_TEXT(card, 2, "addrxip6");
884  memcpy(&ipaddr->u.a6.addr, addr, 16);
885  ipaddr->u.a6.pfxlen = 0;
886  }
887  ipaddr->type = QETH_IP_TYPE_RXIP;
888  } else
889  return;
890  if (!qeth_l3_delete_ip(card, ipaddr))
891  kfree(ipaddr);
892  qeth_l3_set_ip_addr_list(card);
893 }
894 
895 static int qeth_l3_register_addr_entry(struct qeth_card *card,
896  struct qeth_ipaddr *addr)
897 {
898  char buf[50];
899  int rc = 0;
900  int cnt = 3;
901 
902  if (addr->proto == QETH_PROT_IPV4) {
903  QETH_CARD_TEXT(card, 2, "setaddr4");
904  QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
905  } else if (addr->proto == QETH_PROT_IPV6) {
906  QETH_CARD_TEXT(card, 2, "setaddr6");
907  QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
908  QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
909  } else {
910  QETH_CARD_TEXT(card, 2, "setaddr?");
911  QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
912  }
913  do {
914  if (addr->is_multicast)
915  rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
916  else
917  rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
918  addr->set_flags);
919  if (rc)
920  QETH_CARD_TEXT(card, 2, "failed");
921  } while ((--cnt > 0) && rc);
922  if (rc) {
923  QETH_CARD_TEXT(card, 2, "FAILED");
924  qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
925  dev_warn(&card->gdev->dev,
926  "Registering IP address %s failed\n", buf);
927  }
928  return rc;
929 }
930 
931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
932  struct qeth_ipaddr *addr)
933 {
934  int rc = 0;
935 
936  if (addr->proto == QETH_PROT_IPV4) {
937  QETH_CARD_TEXT(card, 2, "deladdr4");
938  QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
939  } else if (addr->proto == QETH_PROT_IPV6) {
940  QETH_CARD_TEXT(card, 2, "deladdr6");
941  QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
942  QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
943  } else {
944  QETH_CARD_TEXT(card, 2, "deladdr?");
945  QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
946  }
947  if (addr->is_multicast)
948  rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
949  else
950  rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
951  addr->del_flags);
952  if (rc)
953  QETH_CARD_TEXT(card, 2, "failed");
954 
955  return rc;
956 }
957 
958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
959 {
960  if (cast_type == RTN_MULTICAST)
961  return QETH_CAST_MULTICAST;
962  if (cast_type == RTN_BROADCAST)
963  return QETH_CAST_BROADCAST;
964  return QETH_CAST_UNICAST;
965 }
966 
967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
968 {
969  u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
970  if (cast_type == RTN_MULTICAST)
971  return ct | QETH_CAST_MULTICAST;
972  if (cast_type == RTN_ANYCAST)
973  return ct | QETH_CAST_ANYCAST;
974  if (cast_type == RTN_BROADCAST)
975  return ct | QETH_CAST_BROADCAST;
976  return ct | QETH_CAST_UNICAST;
977 }
978 
979 static int qeth_l3_setadapter_parms(struct qeth_card *card)
980 {
981  int rc;
982 
983  QETH_DBF_TEXT(SETUP, 2, "setadprm");
984 
985  if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
986  dev_info(&card->gdev->dev,
987  "set adapter parameters not supported.\n");
988  QETH_DBF_TEXT(SETUP, 2, " notsupp");
989  return 0;
990  }
991  rc = qeth_query_setadapterparms(card);
992  if (rc) {
993  QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
994  "0x%x\n", dev_name(&card->gdev->dev), rc);
995  return rc;
996  }
997  if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
998  rc = qeth_setadpparms_change_macaddr(card);
999  if (rc)
1000  dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1001  " address failed\n");
1002  }
1003 
1004  return rc;
1005 }
1006 
1007 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1008  struct qeth_reply *reply, unsigned long data)
1009 {
1010  struct qeth_ipa_cmd *cmd;
1011 
1012  QETH_CARD_TEXT(card, 4, "defadpcb");
1013 
1014  cmd = (struct qeth_ipa_cmd *) data;
1015  if (cmd->hdr.return_code == 0) {
1016  cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1017  if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1018  card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1019  if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1020  card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1021  }
1022  if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1023  cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1024  card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1025  QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1026  }
1027  if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1028  cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029  card->info.tx_csum_mask =
1030  cmd->data.setassparms.data.flags_32bit;
1031  QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1032  }
1033 
1034  return 0;
1035 }
1036 
1037 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1038  struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1039  __u16 len, enum qeth_prot_versions prot)
1040 {
1041  struct qeth_cmd_buffer *iob;
1042  struct qeth_ipa_cmd *cmd;
1043 
1044  QETH_CARD_TEXT(card, 4, "getasscm");
1045  iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1046 
1047  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1048  cmd->data.setassparms.hdr.assist_no = ipa_func;
1049  cmd->data.setassparms.hdr.length = 8 + len;
1050  cmd->data.setassparms.hdr.command_code = cmd_code;
1051  cmd->data.setassparms.hdr.return_code = 0;
1052  cmd->data.setassparms.hdr.seq_no = 0;
1053 
1054  return iob;
1055 }
1056 
1057 static int qeth_l3_send_setassparms(struct qeth_card *card,
1058  struct qeth_cmd_buffer *iob, __u16 len, long data,
1059  int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1060  unsigned long),
1061  void *reply_param)
1062 {
1063  int rc;
1064  struct qeth_ipa_cmd *cmd;
1065 
1066  QETH_CARD_TEXT(card, 4, "sendassp");
1067 
1068  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1069  if (len <= sizeof(__u32))
1070  cmd->data.setassparms.data.flags_32bit = (__u32) data;
1071  else /* (len > sizeof(__u32)) */
1072  memcpy(&cmd->data.setassparms.data, (void *) data, len);
1073 
1074  rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1075  return rc;
1076 }
1077 
1078 #ifdef CONFIG_QETH_IPV6
1079 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1080  enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1081 {
1082  int rc;
1083  struct qeth_cmd_buffer *iob;
1084 
1085  QETH_CARD_TEXT(card, 4, "simassp6");
1086  iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1087  0, QETH_PROT_IPV6);
1088  rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1089  qeth_l3_default_setassparms_cb, NULL);
1090  return rc;
1091 }
1092 #endif
1093 
1094 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1095  enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1096 {
1097  int rc;
1098  int length = 0;
1099  struct qeth_cmd_buffer *iob;
1100 
1101  QETH_CARD_TEXT(card, 4, "simassp4");
1102  if (data)
1103  length = sizeof(__u32);
1104  iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1105  length, QETH_PROT_IPV4);
1106  rc = qeth_l3_send_setassparms(card, iob, length, data,
1107  qeth_l3_default_setassparms_cb, NULL);
1108  return rc;
1109 }
1110 
1111 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1112 {
1113  int rc;
1114 
1115  QETH_CARD_TEXT(card, 3, "ipaarp");
1116 
1117  if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1118  dev_info(&card->gdev->dev,
1119  "ARP processing not supported on %s!\n",
1120  QETH_CARD_IFNAME(card));
1121  return 0;
1122  }
1123  rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1124  IPA_CMD_ASS_START, 0);
1125  if (rc) {
1126  dev_warn(&card->gdev->dev,
1127  "Starting ARP processing support for %s failed\n",
1128  QETH_CARD_IFNAME(card));
1129  }
1130  return rc;
1131 }
1132 
1133 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1134 {
1135  int rc;
1136 
1137  QETH_CARD_TEXT(card, 3, "ipaipfrg");
1138 
1139  if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1140  dev_info(&card->gdev->dev,
1141  "Hardware IP fragmentation not supported on %s\n",
1142  QETH_CARD_IFNAME(card));
1143  return -EOPNOTSUPP;
1144  }
1145 
1146  rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1147  IPA_CMD_ASS_START, 0);
1148  if (rc) {
1149  dev_warn(&card->gdev->dev,
1150  "Starting IP fragmentation support for %s failed\n",
1151  QETH_CARD_IFNAME(card));
1152  } else
1153  dev_info(&card->gdev->dev,
1154  "Hardware IP fragmentation enabled \n");
1155  return rc;
1156 }
1157 
1158 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1159 {
1160  int rc;
1161 
1162  QETH_CARD_TEXT(card, 3, "stsrcmac");
1163 
1164  if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1165  dev_info(&card->gdev->dev,
1166  "Inbound source MAC-address not supported on %s\n",
1167  QETH_CARD_IFNAME(card));
1168  return -EOPNOTSUPP;
1169  }
1170 
1171  rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1172  IPA_CMD_ASS_START, 0);
1173  if (rc)
1174  dev_warn(&card->gdev->dev,
1175  "Starting source MAC-address support for %s failed\n",
1176  QETH_CARD_IFNAME(card));
1177  return rc;
1178 }
1179 
1180 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1181 {
1182  int rc = 0;
1183 
1184  QETH_CARD_TEXT(card, 3, "strtvlan");
1185 
1186  if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1187  dev_info(&card->gdev->dev,
1188  "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1189  return -EOPNOTSUPP;
1190  }
1191 
1192  rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1193  IPA_CMD_ASS_START, 0);
1194  if (rc) {
1195  dev_warn(&card->gdev->dev,
1196  "Starting VLAN support for %s failed\n",
1197  QETH_CARD_IFNAME(card));
1198  } else {
1199  dev_info(&card->gdev->dev, "VLAN enabled\n");
1200  }
1201  return rc;
1202 }
1203 
1204 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1205 {
1206  int rc;
1207 
1208  QETH_CARD_TEXT(card, 3, "stmcast");
1209 
1210  if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1211  dev_info(&card->gdev->dev,
1212  "Multicast not supported on %s\n",
1213  QETH_CARD_IFNAME(card));
1214  return -EOPNOTSUPP;
1215  }
1216 
1217  rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1218  IPA_CMD_ASS_START, 0);
1219  if (rc) {
1220  dev_warn(&card->gdev->dev,
1221  "Starting multicast support for %s failed\n",
1222  QETH_CARD_IFNAME(card));
1223  } else {
1224  dev_info(&card->gdev->dev, "Multicast enabled\n");
1225  card->dev->flags |= IFF_MULTICAST;
1226  }
1227  return rc;
1228 }
1229 
1230 #ifdef CONFIG_QETH_IPV6
1231 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1232 {
1233  int rc;
1234 
1235  QETH_CARD_TEXT(card, 3, "softipv6");
1236 
1237  if (card->info.type == QETH_CARD_TYPE_IQD)
1238  goto out;
1239 
1240  rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1241  if (rc) {
1242  dev_err(&card->gdev->dev,
1243  "Activating IPv6 support for %s failed\n",
1244  QETH_CARD_IFNAME(card));
1245  return rc;
1246  }
1247  rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1248  IPA_CMD_ASS_START, 3);
1249  if (rc) {
1250  dev_err(&card->gdev->dev,
1251  "Activating IPv6 support for %s failed\n",
1252  QETH_CARD_IFNAME(card));
1253  return rc;
1254  }
1255  rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1256  IPA_CMD_ASS_START);
1257  if (rc) {
1258  dev_err(&card->gdev->dev,
1259  "Activating IPv6 support for %s failed\n",
1260  QETH_CARD_IFNAME(card));
1261  return rc;
1262  }
1263  rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1264  IPA_CMD_ASS_START);
1265  if (rc) {
1266  dev_warn(&card->gdev->dev,
1267  "Enabling the passthrough mode for %s failed\n",
1268  QETH_CARD_IFNAME(card));
1269  return rc;
1270  }
1271 out:
1272  dev_info(&card->gdev->dev, "IPV6 enabled\n");
1273  return 0;
1274 }
1275 #endif
1276 
1277 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1278 {
1279  int rc = 0;
1280 
1281  QETH_CARD_TEXT(card, 3, "strtipv6");
1282 
1283  if (!qeth_is_supported(card, IPA_IPV6)) {
1284  dev_info(&card->gdev->dev,
1285  "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1286  return 0;
1287  }
1288 #ifdef CONFIG_QETH_IPV6
1289  rc = qeth_l3_softsetup_ipv6(card);
1290 #endif
1291  return rc ;
1292 }
1293 
1294 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1295 {
1296  int rc;
1297 
1298  QETH_CARD_TEXT(card, 3, "stbrdcst");
1299  card->info.broadcast_capable = 0;
1300  if (!qeth_is_supported(card, IPA_FILTERING)) {
1301  dev_info(&card->gdev->dev,
1302  "Broadcast not supported on %s\n",
1303  QETH_CARD_IFNAME(card));
1304  rc = -EOPNOTSUPP;
1305  goto out;
1306  }
1307  rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1308  IPA_CMD_ASS_START, 0);
1309  if (rc) {
1310  dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1311  "%s failed\n", QETH_CARD_IFNAME(card));
1312  goto out;
1313  }
1314 
1315  rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1316  IPA_CMD_ASS_CONFIGURE, 1);
1317  if (rc) {
1318  dev_warn(&card->gdev->dev,
1319  "Setting up broadcast filtering for %s failed\n",
1320  QETH_CARD_IFNAME(card));
1321  goto out;
1322  }
1323  card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1324  dev_info(&card->gdev->dev, "Broadcast enabled\n");
1325  rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1326  IPA_CMD_ASS_ENABLE, 1);
1327  if (rc) {
1328  dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1329  "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1330  goto out;
1331  }
1332  card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1333 out:
1334  if (card->info.broadcast_capable)
1335  card->dev->flags |= IFF_BROADCAST;
1336  else
1337  card->dev->flags &= ~IFF_BROADCAST;
1338  return rc;
1339 }
1340 
1341 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1342 {
1343  int rc;
1344 
1345  rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1346  IPA_CMD_ASS_START, 0);
1347  if (rc) {
1348  dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1349  "failed, using SW checksumming\n",
1350  QETH_CARD_IFNAME(card));
1351  return rc;
1352  }
1353  rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1354  IPA_CMD_ASS_ENABLE,
1355  card->info.csum_mask);
1356  if (rc) {
1357  dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1358  "failed, using SW checksumming\n",
1359  QETH_CARD_IFNAME(card));
1360  return rc;
1361  }
1362  return 0;
1363 }
1364 
1365 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1366 {
1367  int rc = 0;
1368 
1369  if (on) {
1370  rc = qeth_l3_send_checksum_command(card);
1371  if (rc)
1372  return -EIO;
1373  dev_info(&card->gdev->dev,
1374  "HW Checksumming (inbound) enabled\n");
1375  } else {
1376  rc = qeth_l3_send_simple_setassparms(card,
1377  IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1378  if (rc)
1379  return -EIO;
1380  }
1381 
1382  return 0;
1383 }
1384 
1385 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1386 {
1387  QETH_CARD_TEXT(card, 3, "strtcsum");
1388 
1389  if (card->dev->features & NETIF_F_RXCSUM) {
1390  rtnl_lock();
1391  /* force set_features call */
1392  card->dev->features &= ~NETIF_F_RXCSUM;
1393  netdev_update_features(card->dev);
1394  rtnl_unlock();
1395  }
1396  return 0;
1397 }
1398 
1399 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1400 {
1401  int rc = 0;
1402 
1403  if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1404  return rc;
1405  rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1406  IPA_CMD_ASS_START, 0);
1407  if (rc)
1408  goto err_out;
1409  rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1410  IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1411  if (rc)
1412  goto err_out;
1413  dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1414  return rc;
1415 err_out:
1416  dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1417  "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1418  return rc;
1419 }
1420 
1421 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1422 {
1423  int rc;
1424 
1425  QETH_CARD_TEXT(card, 3, "sttso");
1426 
1427  if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1428  dev_info(&card->gdev->dev,
1429  "Outbound TSO not supported on %s\n",
1430  QETH_CARD_IFNAME(card));
1431  rc = -EOPNOTSUPP;
1432  } else {
1433  rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1434  IPA_CMD_ASS_START, 0);
1435  if (rc)
1436  dev_warn(&card->gdev->dev, "Starting outbound TCP "
1437  "segmentation offload for %s failed\n",
1438  QETH_CARD_IFNAME(card));
1439  else
1440  dev_info(&card->gdev->dev,
1441  "Outbound TSO enabled\n");
1442  }
1443  if (rc)
1444  card->dev->features &= ~NETIF_F_TSO;
1445  return rc;
1446 }
1447 
1448 static int qeth_l3_start_ipassists(struct qeth_card *card)
1449 {
1450  QETH_CARD_TEXT(card, 3, "strtipas");
1451 
1452  qeth_set_access_ctrl_online(card); /* go on*/
1453  qeth_l3_start_ipa_arp_processing(card); /* go on*/
1454  qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1455  qeth_l3_start_ipa_source_mac(card); /* go on*/
1456  qeth_l3_start_ipa_vlan(card); /* go on*/
1457  qeth_l3_start_ipa_multicast(card); /* go on*/
1458  qeth_l3_start_ipa_ipv6(card); /* go on*/
1459  qeth_l3_start_ipa_broadcast(card); /* go on*/
1460  qeth_l3_start_ipa_checksum(card); /* go on*/
1461  qeth_l3_start_ipa_tx_checksum(card);
1462  qeth_l3_start_ipa_tso(card); /* go on*/
1463  return 0;
1464 }
1465 
1466 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1467  struct qeth_reply *reply, unsigned long data)
1468 {
1469  struct qeth_ipa_cmd *cmd;
1470 
1471  cmd = (struct qeth_ipa_cmd *) data;
1472  if (cmd->hdr.return_code == 0)
1473  memcpy(card->dev->dev_addr,
1474  cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1475  else
1476  eth_random_addr(card->dev->dev_addr);
1477 
1478  return 0;
1479 }
1480 
1481 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1482 {
1483  int rc = 0;
1484  struct qeth_cmd_buffer *iob;
1485  struct qeth_ipa_cmd *cmd;
1486 
1487  QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1488 
1489  iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1490  QETH_PROT_IPV6);
1491  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1492  *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1493  card->info.unique_id;
1494 
1495  rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1496  NULL);
1497  return rc;
1498 }
1499 
1500 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1501  struct qeth_reply *reply, unsigned long data)
1502 {
1503  struct qeth_ipa_cmd *cmd;
1504 
1505  cmd = (struct qeth_ipa_cmd *) data;
1506  if (cmd->hdr.return_code == 0)
1507  card->info.unique_id = *((__u16 *)
1508  &cmd->data.create_destroy_addr.unique_id[6]);
1509  else {
1510  card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1511  UNIQUE_ID_NOT_BY_CARD;
1512  dev_warn(&card->gdev->dev, "The network adapter failed to "
1513  "generate a unique ID\n");
1514  }
1515  return 0;
1516 }
1517 
1518 static int qeth_l3_get_unique_id(struct qeth_card *card)
1519 {
1520  int rc = 0;
1521  struct qeth_cmd_buffer *iob;
1522  struct qeth_ipa_cmd *cmd;
1523 
1524  QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1525 
1526  if (!qeth_is_supported(card, IPA_IPV6)) {
1527  card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1528  UNIQUE_ID_NOT_BY_CARD;
1529  return 0;
1530  }
1531 
1532  iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1533  QETH_PROT_IPV6);
1534  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1535  *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1536  card->info.unique_id;
1537 
1538  rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1539  return rc;
1540 }
1541 
1542 static int
1543 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1544  unsigned long data)
1545 {
1546  struct qeth_ipa_cmd *cmd;
1547  __u16 rc;
1548 
1549  QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1550 
1551  cmd = (struct qeth_ipa_cmd *)data;
1552  rc = cmd->hdr.return_code;
1553  if (rc)
1554  QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1555  switch (cmd->data.diagass.action) {
1556  case QETH_DIAGS_CMD_TRACE_QUERY:
1557  break;
1558  case QETH_DIAGS_CMD_TRACE_DISABLE:
1559  switch (rc) {
1560  case 0:
1561  case IPA_RC_INVALID_SUBCMD:
1562  card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1563  dev_info(&card->gdev->dev, "The HiperSockets network "
1564  "traffic analyzer is deactivated\n");
1565  break;
1566  default:
1567  break;
1568  }
1569  break;
1570  case QETH_DIAGS_CMD_TRACE_ENABLE:
1571  switch (rc) {
1572  case 0:
1573  card->info.promisc_mode = SET_PROMISC_MODE_ON;
1574  dev_info(&card->gdev->dev, "The HiperSockets network "
1575  "traffic analyzer is activated\n");
1576  break;
1577  case IPA_RC_HARDWARE_AUTH_ERROR:
1578  dev_warn(&card->gdev->dev, "The device is not "
1579  "authorized to run as a HiperSockets network "
1580  "traffic analyzer\n");
1581  break;
1582  case IPA_RC_TRACE_ALREADY_ACTIVE:
1583  dev_warn(&card->gdev->dev, "A HiperSockets "
1584  "network traffic analyzer is already "
1585  "active in the HiperSockets LAN\n");
1586  break;
1587  default:
1588  break;
1589  }
1590  break;
1591  default:
1592  QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1593  cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1594  }
1595 
1596  return 0;
1597 }
1598 
1599 static int
1600 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1601 {
1602  struct qeth_cmd_buffer *iob;
1603  struct qeth_ipa_cmd *cmd;
1604 
1605  QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1606 
1607  iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1608  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1609  cmd->data.diagass.subcmd_len = 16;
1610  cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1611  cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1612  cmd->data.diagass.action = diags_cmd;
1613  return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1614 }
1615 
1616 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1617  struct net_device *dev)
1618 {
1619  ip_eth_mc_map(ipm, mac);
1620 }
1621 
1622 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1623 {
1624  struct qeth_ipaddr *ipm;
1625  struct ip_mc_list *im4;
1626  char buf[MAX_ADDR_LEN];
1627 
1628  QETH_CARD_TEXT(card, 4, "addmc");
1629  for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1630  im4 = rcu_dereference(im4->next_rcu)) {
1631  qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1632  ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1633  if (!ipm)
1634  continue;
1635  ipm->u.a4.addr = im4->multiaddr;
1636  memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1637  ipm->is_multicast = 1;
1638  if (!qeth_l3_add_ip(card, ipm))
1639  kfree(ipm);
1640  }
1641 }
1642 
1643 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1644 {
1645  struct in_device *in_dev;
1646  u16 vid;
1647 
1648  QETH_CARD_TEXT(card, 4, "addmcvl");
1649  if (!qeth_is_supported(card, IPA_FULL_VLAN))
1650  return;
1651 
1652  for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1653  struct net_device *netdev;
1654 
1655  rcu_read_lock();
1656  netdev = __vlan_find_dev_deep(card->dev, vid);
1657  rcu_read_unlock();
1658  if (netdev == NULL ||
1659  !(netdev->flags & IFF_UP))
1660  continue;
1661  in_dev = in_dev_get(netdev);
1662  if (!in_dev)
1663  continue;
1664  rcu_read_lock();
1665  qeth_l3_add_mc(card, in_dev);
1666  rcu_read_unlock();
1667  in_dev_put(in_dev);
1668  }
1669 }
1670 
1671 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1672 {
1673  struct in_device *in4_dev;
1674 
1675  QETH_CARD_TEXT(card, 4, "chkmcv4");
1676  in4_dev = in_dev_get(card->dev);
1677  if (in4_dev == NULL)
1678  return;
1679  rcu_read_lock();
1680  qeth_l3_add_mc(card, in4_dev);
1681  qeth_l3_add_vlan_mc(card);
1682  rcu_read_unlock();
1683  in_dev_put(in4_dev);
1684 }
1685 
1686 #ifdef CONFIG_QETH_IPV6
1687 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1688 {
1689  struct qeth_ipaddr *ipm;
1690  struct ifmcaddr6 *im6;
1691  char buf[MAX_ADDR_LEN];
1692 
1693  QETH_CARD_TEXT(card, 4, "addmc6");
1694  for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1695  ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1696  ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1697  if (!ipm)
1698  continue;
1699  ipm->is_multicast = 1;
1700  memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1701  memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1702  sizeof(struct in6_addr));
1703  if (!qeth_l3_add_ip(card, ipm))
1704  kfree(ipm);
1705  }
1706 }
1707 
1708 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1709 {
1710  struct inet6_dev *in_dev;
1711  u16 vid;
1712 
1713  QETH_CARD_TEXT(card, 4, "admc6vl");
1714  if (!qeth_is_supported(card, IPA_FULL_VLAN))
1715  return;
1716 
1717  for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1718  struct net_device *netdev;
1719 
1720  netdev = __vlan_find_dev_deep(card->dev, vid);
1721  if (netdev == NULL ||
1722  !(netdev->flags & IFF_UP))
1723  continue;
1724  in_dev = in6_dev_get(netdev);
1725  if (!in_dev)
1726  continue;
1727  read_lock_bh(&in_dev->lock);
1728  qeth_l3_add_mc6(card, in_dev);
1729  read_unlock_bh(&in_dev->lock);
1730  in6_dev_put(in_dev);
1731  }
1732 }
1733 
1734 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1735 {
1736  struct inet6_dev *in6_dev;
1737 
1738  QETH_CARD_TEXT(card, 4, "chkmcv6");
1739  if (!qeth_is_supported(card, IPA_IPV6))
1740  return ;
1741  in6_dev = in6_dev_get(card->dev);
1742  if (in6_dev == NULL)
1743  return;
1744  read_lock_bh(&in6_dev->lock);
1745  qeth_l3_add_mc6(card, in6_dev);
1746  qeth_l3_add_vlan_mc6(card);
1747  read_unlock_bh(&in6_dev->lock);
1748  in6_dev_put(in6_dev);
1749 }
1750 #endif /* CONFIG_QETH_IPV6 */
1751 
1752 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1753  unsigned short vid)
1754 {
1755  struct in_device *in_dev;
1756  struct in_ifaddr *ifa;
1757  struct qeth_ipaddr *addr;
1758  struct net_device *netdev;
1759 
1760  QETH_CARD_TEXT(card, 4, "frvaddr4");
1761 
1762  netdev = __vlan_find_dev_deep(card->dev, vid);
1763  if (!netdev)
1764  return;
1765  in_dev = in_dev_get(netdev);
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  struct net_device *netdev;
1789 
1790  QETH_CARD_TEXT(card, 4, "frvaddr6");
1791 
1792  netdev = __vlan_find_dev_deep(card->dev, vid);
1793  if (!netdev)
1794  return;
1795  in6_dev = in6_dev_get(netdev);
1796  if (!in6_dev)
1797  return;
1798  list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1799  addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1800  if (addr) {
1801  memcpy(&addr->u.a6.addr, &ifa->addr,
1802  sizeof(struct in6_addr));
1803  addr->u.a6.pfxlen = ifa->prefix_len;
1804  addr->type = QETH_IP_TYPE_NORMAL;
1805  if (!qeth_l3_delete_ip(card, addr))
1806  kfree(addr);
1807  }
1808  }
1809  in6_dev_put(in6_dev);
1810 #endif /* CONFIG_QETH_IPV6 */
1811 }
1812 
1813 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1814  unsigned short vid)
1815 {
1816  qeth_l3_free_vlan_addresses4(card, vid);
1817  qeth_l3_free_vlan_addresses6(card, vid);
1818 }
1819 
1820 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1821 {
1822  struct qeth_card *card = dev->ml_priv;
1823 
1824  set_bit(vid, card->active_vlans);
1825  return 0;
1826 }
1827 
1828 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1829 {
1830  struct qeth_card *card = dev->ml_priv;
1831  unsigned long flags;
1832 
1833  QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1834  if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1835  QETH_CARD_TEXT(card, 3, "kidREC");
1836  return 0;
1837  }
1838  spin_lock_irqsave(&card->vlanlock, flags);
1839  /* unregister IP addresses of vlan device */
1840  qeth_l3_free_vlan_addresses(card, vid);
1841  clear_bit(vid, card->active_vlans);
1842  spin_unlock_irqrestore(&card->vlanlock, flags);
1843  qeth_l3_set_multicast_list(card->dev);
1844  return 0;
1845 }
1846 
1847 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1848  struct sk_buff *skb, struct qeth_hdr *hdr,
1849  unsigned short *vlan_id)
1850 {
1851  __be16 prot;
1852  struct iphdr *ip_hdr;
1853  unsigned char tg_addr[MAX_ADDR_LEN];
1854  int is_vlan = 0;
1855 
1856  if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1857  prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1858  ETH_P_IP);
1859  switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1860  case QETH_CAST_MULTICAST:
1861  switch (prot) {
1862 #ifdef CONFIG_QETH_IPV6
1863  case __constant_htons(ETH_P_IPV6):
1864  ndisc_mc_map((struct in6_addr *)
1865  skb->data + 24,
1866  tg_addr, card->dev, 0);
1867  break;
1868 #endif
1869  case __constant_htons(ETH_P_IP):
1870  ip_hdr = (struct iphdr *)skb->data;
1871  ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1872  break;
1873  default:
1874  memcpy(tg_addr, card->dev->broadcast,
1875  card->dev->addr_len);
1876  }
1877  card->stats.multicast++;
1878  skb->pkt_type = PACKET_MULTICAST;
1879  break;
1880  case QETH_CAST_BROADCAST:
1881  memcpy(tg_addr, card->dev->broadcast,
1882  card->dev->addr_len);
1883  card->stats.multicast++;
1884  skb->pkt_type = PACKET_BROADCAST;
1885  break;
1886  case QETH_CAST_UNICAST:
1887  case QETH_CAST_ANYCAST:
1888  case QETH_CAST_NOCAST:
1889  default:
1890  if (card->options.sniffer)
1891  skb->pkt_type = PACKET_OTHERHOST;
1892  else
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  skb->protocol = eth_type_trans(skb, card->dev);
1907 
1908  if (hdr->hdr.l3.ext_flags &
1909  (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1910  *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1911  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1912  is_vlan = 1;
1913  }
1914 
1915  if (card->dev->features & NETIF_F_RXCSUM) {
1916  if ((hdr->hdr.l3.ext_flags &
1917  (QETH_HDR_EXT_CSUM_HDR_REQ |
1918  QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1919  (QETH_HDR_EXT_CSUM_HDR_REQ |
1920  QETH_HDR_EXT_CSUM_TRANSP_REQ))
1921  skb->ip_summed = CHECKSUM_UNNECESSARY;
1922  else
1923  skb->ip_summed = CHECKSUM_NONE;
1924  } else
1925  skb->ip_summed = CHECKSUM_NONE;
1926 
1927  return is_vlan;
1928 }
1929 
1930 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1931  int budget, int *done)
1932 {
1933  int work_done = 0;
1934  struct sk_buff *skb;
1935  struct qeth_hdr *hdr;
1936  __u16 vlan_tag = 0;
1937  int is_vlan;
1938  unsigned int len;
1939  __u16 magic;
1940 
1941  *done = 0;
1942  BUG_ON(!budget);
1943  while (budget) {
1944  skb = qeth_core_get_next_skb(card,
1945  &card->qdio.in_q->bufs[card->rx.b_index],
1946  &card->rx.b_element, &card->rx.e_offset, &hdr);
1947  if (!skb) {
1948  *done = 1;
1949  break;
1950  }
1951  skb->dev = card->dev;
1952  switch (hdr->hdr.l3.id) {
1953  case QETH_HEADER_TYPE_LAYER3:
1954  magic = *(__u16 *)skb->data;
1955  if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1956  (magic == ETH_P_AF_IUCV)) {
1957  skb->protocol = ETH_P_AF_IUCV;
1958  skb->pkt_type = PACKET_HOST;
1959  skb->mac_header = NET_SKB_PAD;
1960  skb->dev = card->dev;
1961  len = skb->len;
1962  card->dev->header_ops->create(skb, card->dev, 0,
1963  card->dev->dev_addr, "FAKELL",
1964  card->dev->addr_len);
1965  netif_receive_skb(skb);
1966  } else {
1967  is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1968  &vlan_tag);
1969  len = skb->len;
1970  if (is_vlan && !card->options.sniffer)
1971  __vlan_hwaccel_put_tag(skb, vlan_tag);
1972  napi_gro_receive(&card->napi, skb);
1973  }
1974  break;
1975  case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1976  skb->pkt_type = PACKET_HOST;
1977  skb->protocol = eth_type_trans(skb, skb->dev);
1978  len = skb->len;
1979  netif_receive_skb(skb);
1980  break;
1981  default:
1982  dev_kfree_skb_any(skb);
1983  QETH_CARD_TEXT(card, 3, "inbunkno");
1984  QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1985  continue;
1986  }
1987  work_done++;
1988  budget--;
1989  card->stats.rx_packets++;
1990  card->stats.rx_bytes += len;
1991  }
1992  return work_done;
1993 }
1994 
1995 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1996 {
1997  struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1998  int work_done = 0;
1999  struct qeth_qdio_buffer *buffer;
2000  int done;
2001  int new_budget = budget;
2002 
2003  if (card->options.performance_stats) {
2004  card->perf_stats.inbound_cnt++;
2005  card->perf_stats.inbound_start_time = qeth_get_micros();
2006  }
2007 
2008  while (1) {
2009  if (!card->rx.b_count) {
2010  card->rx.qdio_err = 0;
2011  card->rx.b_count = qdio_get_next_buffers(
2012  card->data.ccwdev, 0, &card->rx.b_index,
2013  &card->rx.qdio_err);
2014  if (card->rx.b_count <= 0) {
2015  card->rx.b_count = 0;
2016  break;
2017  }
2018  card->rx.b_element =
2019  &card->qdio.in_q->bufs[card->rx.b_index]
2020  .buffer->element[0];
2021  card->rx.e_offset = 0;
2022  }
2023 
2024  while (card->rx.b_count) {
2025  buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2026  if (!(card->rx.qdio_err &&
2027  qeth_check_qdio_errors(card, buffer->buffer,
2028  card->rx.qdio_err, "qinerr")))
2029  work_done += qeth_l3_process_inbound_buffer(
2030  card, new_budget, &done);
2031  else
2032  done = 1;
2033 
2034  if (done) {
2035  if (card->options.performance_stats)
2036  card->perf_stats.bufs_rec++;
2037  qeth_put_buffer_pool_entry(card,
2038  buffer->pool_entry);
2039  qeth_queue_input_buffer(card, card->rx.b_index);
2040  card->rx.b_count--;
2041  if (card->rx.b_count) {
2042  card->rx.b_index =
2043  (card->rx.b_index + 1) %
2044  QDIO_MAX_BUFFERS_PER_Q;
2045  card->rx.b_element =
2046  &card->qdio.in_q
2047  ->bufs[card->rx.b_index]
2048  .buffer->element[0];
2049  card->rx.e_offset = 0;
2050  }
2051  }
2052 
2053  if (work_done >= budget)
2054  goto out;
2055  else
2056  new_budget = budget - work_done;
2057  }
2058  }
2059 
2060  napi_complete(napi);
2061  if (qdio_start_irq(card->data.ccwdev, 0))
2062  napi_schedule(&card->napi);
2063 out:
2064  if (card->options.performance_stats)
2065  card->perf_stats.inbound_time += qeth_get_micros() -
2066  card->perf_stats.inbound_start_time;
2067  return work_done;
2068 }
2069 
2070 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2071  struct qeth_card *card)
2072 {
2073  int rc = 0;
2074  u16 vid;
2075 
2076  for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2077  struct net_device *netdev;
2078 
2079  rcu_read_lock();
2080  netdev = __vlan_find_dev_deep(card->dev, vid);
2081  rcu_read_unlock();
2082  if (netdev == dev) {
2083  rc = QETH_VLAN_CARD;
2084  break;
2085  }
2086  }
2087 
2088  if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2089  return 0;
2090 
2091  return rc;
2092 }
2093 
2094 static int qeth_l3_verify_dev(struct net_device *dev)
2095 {
2096  struct qeth_card *card;
2097  unsigned long flags;
2098  int rc = 0;
2099 
2100  read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2101  list_for_each_entry(card, &qeth_core_card_list.list, list) {
2102  if (card->dev == dev) {
2103  rc = QETH_REAL_CARD;
2104  break;
2105  }
2106  rc = qeth_l3_verify_vlan_dev(dev, card);
2107  if (rc)
2108  break;
2109  }
2110  read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2111 
2112  return rc;
2113 }
2114 
2115 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2116 {
2117  struct qeth_card *card = NULL;
2118  int rc;
2119 
2120  rc = qeth_l3_verify_dev(dev);
2121  if (rc == QETH_REAL_CARD)
2122  card = dev->ml_priv;
2123  else if (rc == QETH_VLAN_CARD)
2124  card = vlan_dev_real_dev(dev)->ml_priv;
2125  if (card && card->options.layer2)
2126  card = NULL;
2127  if (card)
2128  QETH_CARD_TEXT_(card, 4, "%d", rc);
2129  return card ;
2130 }
2131 
2132 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2133 {
2134  int rc = 0;
2135 
2136  QETH_DBF_TEXT(SETUP, 2, "stopcard");
2137  QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2138 
2139  qeth_set_allowed_threads(card, 0, 1);
2140  if (card->options.sniffer &&
2141  (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2142  qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2143  if (card->read.state == CH_STATE_UP &&
2144  card->write.state == CH_STATE_UP &&
2145  (card->state == CARD_STATE_UP)) {
2146  if (recovery_mode)
2147  qeth_l3_stop(card->dev);
2148  else {
2149  rtnl_lock();
2150  dev_close(card->dev);
2151  rtnl_unlock();
2152  }
2153  card->state = CARD_STATE_SOFTSETUP;
2154  }
2155  if (card->state == CARD_STATE_SOFTSETUP) {
2156  qeth_l3_clear_ip_list(card, 1);
2157  qeth_clear_ipacmd_list(card);
2158  card->state = CARD_STATE_HARDSETUP;
2159  }
2160  if (card->state == CARD_STATE_HARDSETUP) {
2161  qeth_qdio_clear_card(card, 0);
2162  qeth_clear_qdio_buffers(card);
2163  qeth_clear_working_pool_list(card);
2164  card->state = CARD_STATE_DOWN;
2165  }
2166  if (card->state == CARD_STATE_DOWN) {
2167  qeth_clear_cmd_buffers(&card->read);
2168  qeth_clear_cmd_buffers(&card->write);
2169  }
2170  return rc;
2171 }
2172 
2173 /*
2174  * test for and Switch promiscuous mode (on or off)
2175  * either for guestlan or HiperSocket Sniffer
2176  */
2177 static void
2178 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2179 {
2180  struct net_device *dev = card->dev;
2181 
2182  if (((dev->flags & IFF_PROMISC) &&
2183  (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2184  (!(dev->flags & IFF_PROMISC) &&
2185  (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2186  return;
2187 
2188  if (card->info.guestlan) { /* Guestlan trace */
2189  if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2190  qeth_setadp_promisc_mode(card);
2191  } else if (card->options.sniffer && /* HiperSockets trace */
2192  qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2193  if (dev->flags & IFF_PROMISC) {
2194  QETH_CARD_TEXT(card, 3, "+promisc");
2195  qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2196  } else {
2197  QETH_CARD_TEXT(card, 3, "-promisc");
2198  qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2199  }
2200  }
2201 }
2202 
2203 static void qeth_l3_set_multicast_list(struct net_device *dev)
2204 {
2205  struct qeth_card *card = dev->ml_priv;
2206 
2207  QETH_CARD_TEXT(card, 3, "setmulti");
2208  if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2209  (card->state != CARD_STATE_UP))
2210  return;
2211  if (!card->options.sniffer) {
2212  qeth_l3_delete_mc_addresses(card);
2213  qeth_l3_add_multicast_ipv4(card);
2214 #ifdef CONFIG_QETH_IPV6
2215  qeth_l3_add_multicast_ipv6(card);
2216 #endif
2217  qeth_l3_set_ip_addr_list(card);
2218  if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2219  return;
2220  }
2221  qeth_l3_handle_promisc_mode(card);
2222 }
2223 
2224 static const char *qeth_l3_arp_get_error_cause(int *rc)
2225 {
2226  switch (*rc) {
2227  case QETH_IPA_ARP_RC_FAILED:
2228  *rc = -EIO;
2229  return "operation failed";
2230  case QETH_IPA_ARP_RC_NOTSUPP:
2231  *rc = -EOPNOTSUPP;
2232  return "operation not supported";
2233  case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2234  *rc = -EINVAL;
2235  return "argument out of range";
2236  case QETH_IPA_ARP_RC_Q_NOTSUPP:
2237  *rc = -EOPNOTSUPP;
2238  return "query operation not supported";
2239  case QETH_IPA_ARP_RC_Q_NO_DATA:
2240  *rc = -ENOENT;
2241  return "no query data available";
2242  default:
2243  return "unknown error";
2244  }
2245 }
2246 
2247 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2248 {
2249  int tmp;
2250  int rc;
2251 
2252  QETH_CARD_TEXT(card, 3, "arpstnoe");
2253 
2254  /*
2255  * currently GuestLAN only supports the ARP assist function
2256  * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2257  * thus we say EOPNOTSUPP for this ARP function
2258  */
2259  if (card->info.guestlan)
2260  return -EOPNOTSUPP;
2261  if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2262  return -EOPNOTSUPP;
2263  }
2264  rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2265  IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2266  no_entries);
2267  if (rc) {
2268  tmp = rc;
2269  QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2270  "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2271  qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2272  }
2273  return rc;
2274 }
2275 
2276 static __u32 get_arp_entry_size(struct qeth_card *card,
2277  struct qeth_arp_query_data *qdata,
2278  struct qeth_arp_entrytype *type, __u8 strip_entries)
2279 {
2280  __u32 rc;
2281  __u8 is_hsi;
2282 
2283  is_hsi = qdata->reply_bits == 5;
2284  if (type->ip == QETHARP_IP_ADDR_V4) {
2285  QETH_CARD_TEXT(card, 4, "arpev4");
2286  if (strip_entries) {
2287  rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2288  sizeof(struct qeth_arp_qi_entry7_short);
2289  } else {
2290  rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2291  sizeof(struct qeth_arp_qi_entry7);
2292  }
2293  } else if (type->ip == QETHARP_IP_ADDR_V6) {
2294  QETH_CARD_TEXT(card, 4, "arpev6");
2295  if (strip_entries) {
2296  rc = is_hsi ?
2297  sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2298  sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2299  } else {
2300  rc = is_hsi ?
2301  sizeof(struct qeth_arp_qi_entry5_ipv6) :
2302  sizeof(struct qeth_arp_qi_entry7_ipv6);
2303  }
2304  } else {
2305  QETH_CARD_TEXT(card, 4, "arpinv");
2306  rc = 0;
2307  }
2308 
2309  return rc;
2310 }
2311 
2312 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2313 {
2314  return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2315  (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2316 }
2317 
2318 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2319  struct qeth_reply *reply, unsigned long data)
2320 {
2321  struct qeth_ipa_cmd *cmd;
2322  struct qeth_arp_query_data *qdata;
2323  struct qeth_arp_query_info *qinfo;
2324  int i;
2325  int e;
2326  int entrybytes_done;
2327  int stripped_bytes;
2328  __u8 do_strip_entries;
2329 
2330  QETH_CARD_TEXT(card, 3, "arpquecb");
2331 
2332  qinfo = (struct qeth_arp_query_info *) reply->param;
2333  cmd = (struct qeth_ipa_cmd *) data;
2334  QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2335  if (cmd->hdr.return_code) {
2336  QETH_CARD_TEXT(card, 4, "arpcberr");
2337  QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2338  return 0;
2339  }
2340  if (cmd->data.setassparms.hdr.return_code) {
2341  cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2342  QETH_CARD_TEXT(card, 4, "setaperr");
2343  QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2344  return 0;
2345  }
2346  qdata = &cmd->data.setassparms.data.query_arp;
2347  QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2348 
2349  do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2350  stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2351  entrybytes_done = 0;
2352  for (e = 0; e < qdata->no_entries; ++e) {
2353  char *cur_entry;
2354  __u32 esize;
2355  struct qeth_arp_entrytype *etype;
2356 
2357  cur_entry = &qdata->data + entrybytes_done;
2358  etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2359  if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2360  QETH_CARD_TEXT(card, 4, "pmis");
2361  QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2362  break;
2363  }
2364  esize = get_arp_entry_size(card, qdata, etype,
2365  do_strip_entries);
2366  QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2367  if (!esize)
2368  break;
2369 
2370  if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2371  QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2372  cmd->hdr.return_code = IPA_RC_ENOMEM;
2373  goto out_error;
2374  }
2375 
2376  memcpy(qinfo->udata + qinfo->udata_offset,
2377  &qdata->data + entrybytes_done + stripped_bytes,
2378  esize);
2379  entrybytes_done += esize + stripped_bytes;
2380  qinfo->udata_offset += esize;
2381  ++qinfo->no_entries;
2382  }
2383  /* check if all replies received ... */
2384  if (cmd->data.setassparms.hdr.seq_no <
2385  cmd->data.setassparms.hdr.number_of_replies)
2386  return 1;
2387  QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2388  memcpy(qinfo->udata, &qinfo->no_entries, 4);
2389  /* keep STRIP_ENTRIES flag so the user program can distinguish
2390  * stripped entries from normal ones */
2391  if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2392  qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2393  memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2394  QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2395  return 0;
2396 out_error:
2397  i = 0;
2398  memcpy(qinfo->udata, &i, 4);
2399  return 0;
2400 }
2401 
2402 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2403  struct qeth_cmd_buffer *iob, int len,
2404  int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2405  unsigned long),
2406  void *reply_param)
2407 {
2408  QETH_CARD_TEXT(card, 4, "sendarp");
2409 
2410  memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2411  memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2412  &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2413  return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2414  reply_cb, reply_param);
2415 }
2416 
2417 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2418  enum qeth_prot_versions prot,
2419  struct qeth_arp_query_info *qinfo)
2420 {
2421  struct qeth_cmd_buffer *iob;
2422  struct qeth_ipa_cmd *cmd;
2423  int tmp;
2424  int rc;
2425 
2426  QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2427 
2428  iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2429  IPA_CMD_ASS_ARP_QUERY_INFO,
2430  sizeof(struct qeth_arp_query_data) - sizeof(char),
2431  prot);
2432  cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2433  cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2434  cmd->data.setassparms.data.query_arp.reply_bits = 0;
2435  cmd->data.setassparms.data.query_arp.no_entries = 0;
2436  rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2437  QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2438  qeth_l3_arp_query_cb, (void *)qinfo);
2439  if (rc) {
2440  tmp = rc;
2441  QETH_DBF_MESSAGE(2,
2442  "Error while querying ARP cache on %s: %s "
2443  "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2444  qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2445  }
2446 
2447  return rc;
2448 }
2449 
2450 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2451 {
2452  struct qeth_arp_query_info qinfo = {0, };
2453  int rc;
2454 
2455  QETH_CARD_TEXT(card, 3, "arpquery");
2456 
2457  if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2458  IPA_ARP_PROCESSING)) {
2459  QETH_CARD_TEXT(card, 3, "arpqnsup");
2460  rc = -EOPNOTSUPP;
2461  goto out;
2462  }
2463  /* get size of userspace buffer and mask_bits -> 6 bytes */
2464  if (copy_from_user(&qinfo, udata, 6)) {
2465  rc = -EFAULT;
2466  goto out;
2467  }
2468  qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2469  if (!qinfo.udata) {
2470  rc = -ENOMEM;
2471  goto out;
2472  }
2473  qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2474  rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2475  if (rc) {
2476  if (copy_to_user(udata, qinfo.udata, 4))
2477  rc = -EFAULT;
2478  goto free_and_out;
2479  } else {
2480 #ifdef CONFIG_QETH_IPV6
2481  if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2482  /* fails in case of GuestLAN QDIO mode */
2483  qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2484  &qinfo);
2485  }
2486 #endif
2487  if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2488  QETH_CARD_TEXT(card, 4, "qactf");
2489  rc = -EFAULT;
2490  goto free_and_out;
2491  }
2492  QETH_CARD_TEXT_(card, 4, "qacts");
2493  }
2494 free_and_out:
2495  kfree(qinfo.udata);
2496 out:
2497  return rc;
2498 }
2499 
2500 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2501  struct qeth_arp_cache_entry *entry)
2502 {
2503  struct qeth_cmd_buffer *iob;
2504  char buf[16];
2505  int tmp;
2506  int rc;
2507 
2508  QETH_CARD_TEXT(card, 3, "arpadent");
2509 
2510  /*
2511  * currently GuestLAN only supports the ARP assist function
2512  * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2513  * thus we say EOPNOTSUPP for this ARP function
2514  */
2515  if (card->info.guestlan)
2516  return -EOPNOTSUPP;
2517  if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2518  return -EOPNOTSUPP;
2519  }
2520 
2521  iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2522  IPA_CMD_ASS_ARP_ADD_ENTRY,
2523  sizeof(struct qeth_arp_cache_entry),
2524  QETH_PROT_IPV4);
2525  rc = qeth_l3_send_setassparms(card, iob,
2526  sizeof(struct qeth_arp_cache_entry),
2527  (unsigned long) entry,
2528  qeth_l3_default_setassparms_cb, NULL);
2529  if (rc) {
2530  tmp = rc;
2531  qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2532  QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2533  "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2534  qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2535  }
2536  return rc;
2537 }
2538 
2539 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2540  struct qeth_arp_cache_entry *entry)
2541 {
2542  struct qeth_cmd_buffer *iob;
2543  char buf[16] = {0, };
2544  int tmp;
2545  int rc;
2546 
2547  QETH_CARD_TEXT(card, 3, "arprment");
2548 
2549  /*
2550  * currently GuestLAN only supports the ARP assist function
2551  * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2552  * thus we say EOPNOTSUPP for this ARP function
2553  */
2554  if (card->info.guestlan)
2555  return -EOPNOTSUPP;
2556  if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2557  return -EOPNOTSUPP;
2558  }
2559  memcpy(buf, entry, 12);
2560  iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2561  IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2562  12,
2563  QETH_PROT_IPV4);
2564  rc = qeth_l3_send_setassparms(card, iob,
2565  12, (unsigned long)buf,
2566  qeth_l3_default_setassparms_cb, NULL);
2567  if (rc) {
2568  tmp = rc;
2569  memset(buf, 0, 16);
2570  qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2571  QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2572  " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2573  qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2574  }
2575  return rc;
2576 }
2577 
2578 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2579 {
2580  int rc;
2581  int tmp;
2582 
2583  QETH_CARD_TEXT(card, 3, "arpflush");
2584 
2585  /*
2586  * currently GuestLAN only supports the ARP assist function
2587  * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2588  * thus we say EOPNOTSUPP for this ARP function
2589  */
2590  if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2591  return -EOPNOTSUPP;
2592  if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2593  return -EOPNOTSUPP;
2594  }
2595  rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2596  IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2597  if (rc) {
2598  tmp = rc;
2599  QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2600  "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2601  qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2602  }
2603  return rc;
2604 }
2605 
2606 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2607 {
2608  struct qeth_card *card = dev->ml_priv;
2609  struct qeth_arp_cache_entry arp_entry;
2610  struct mii_ioctl_data *mii_data;
2611  int rc = 0;
2612 
2613  if (!card)
2614  return -ENODEV;
2615 
2616  if ((card->state != CARD_STATE_UP) &&
2617  (card->state != CARD_STATE_SOFTSETUP))
2618  return -ENODEV;
2619 
2620  switch (cmd) {
2621  case SIOC_QETH_ARP_SET_NO_ENTRIES:
2622  if (!capable(CAP_NET_ADMIN)) {
2623  rc = -EPERM;
2624  break;
2625  }
2626  rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2627  break;
2628  case SIOC_QETH_ARP_QUERY_INFO:
2629  if (!capable(CAP_NET_ADMIN)) {
2630  rc = -EPERM;
2631  break;
2632  }
2633  rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2634  break;
2635  case SIOC_QETH_ARP_ADD_ENTRY:
2636  if (!capable(CAP_NET_ADMIN)) {
2637  rc = -EPERM;
2638  break;
2639  }
2640  if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2641  sizeof(struct qeth_arp_cache_entry)))
2642  rc = -EFAULT;
2643  else
2644  rc = qeth_l3_arp_add_entry(card, &arp_entry);
2645  break;
2646  case SIOC_QETH_ARP_REMOVE_ENTRY:
2647  if (!capable(CAP_NET_ADMIN)) {
2648  rc = -EPERM;
2649  break;
2650  }
2651  if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2652  sizeof(struct qeth_arp_cache_entry)))
2653  rc = -EFAULT;
2654  else
2655  rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2656  break;
2657  case SIOC_QETH_ARP_FLUSH_CACHE:
2658  if (!capable(CAP_NET_ADMIN)) {
2659  rc = -EPERM;
2660  break;
2661  }
2662  rc = qeth_l3_arp_flush_cache(card);
2663  break;
2664  case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2665  rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2666  break;
2667  case SIOC_QETH_GET_CARD_TYPE:
2668  if ((card->info.type == QETH_CARD_TYPE_OSD ||
2669  card->info.type == QETH_CARD_TYPE_OSX) &&
2670  !card->info.guestlan)
2671  return 1;
2672  return 0;
2673  break;
2674  case SIOCGMIIPHY:
2675  mii_data = if_mii(rq);
2676  mii_data->phy_id = 0;
2677  break;
2678  case SIOCGMIIREG:
2679  mii_data = if_mii(rq);
2680  if (mii_data->phy_id != 0)
2681  rc = -EINVAL;
2682  else
2683  mii_data->val_out = qeth_mdio_read(dev,
2684  mii_data->phy_id,
2685  mii_data->reg_num);
2686  break;
2687  case SIOC_QETH_QUERY_OAT:
2688  rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2689  break;
2690  default:
2691  rc = -EOPNOTSUPP;
2692  }
2693  if (rc)
2694  QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2695  return rc;
2696 }
2697 
2698 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2699 {
2700  int cast_type = RTN_UNSPEC;
2701  struct neighbour *n = NULL;
2702  struct dst_entry *dst;
2703 
2704  rcu_read_lock();
2705  dst = skb_dst(skb);
2706  if (dst)
2707  n = dst_neigh_lookup_skb(dst, skb);
2708  if (n) {
2709  cast_type = n->type;
2710  rcu_read_unlock();
2711  neigh_release(n);
2712  if ((cast_type == RTN_BROADCAST) ||
2713  (cast_type == RTN_MULTICAST) ||
2714  (cast_type == RTN_ANYCAST))
2715  return cast_type;
2716  else
2717  return RTN_UNSPEC;
2718  }
2719  rcu_read_unlock();
2720 
2721  /* try something else */
2722  if (skb->protocol == ETH_P_IPV6)
2723  return (skb_network_header(skb)[24] == 0xff) ?
2724  RTN_MULTICAST : 0;
2725  else if (skb->protocol == ETH_P_IP)
2726  return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2727  RTN_MULTICAST : 0;
2728  /* ... */
2729  if (!memcmp(skb->data, skb->dev->broadcast, 6))
2730  return RTN_BROADCAST;
2731  else {
2732  u16 hdr_mac;
2733 
2734  hdr_mac = *((u16 *)skb->data);
2735  /* tr multicast? */
2736  switch (card->info.link_type) {
2737  case QETH_LINK_TYPE_HSTR:
2738  case QETH_LINK_TYPE_LANE_TR:
2739  if ((hdr_mac == QETH_TR_MAC_NC) ||
2740  (hdr_mac == QETH_TR_MAC_C))
2741  return RTN_MULTICAST;
2742  break;
2743  /* eth or so multicast? */
2744  default:
2745  if ((hdr_mac == QETH_ETH_MAC_V4) ||
2746  (hdr_mac == QETH_ETH_MAC_V6))
2747  return RTN_MULTICAST;
2748  }
2749  }
2750  return cast_type;
2751 }
2752 
2753 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2754  struct qeth_hdr *hdr, struct sk_buff *skb)
2755 {
2756  char daddr[16];
2757  struct af_iucv_trans_hdr *iucv_hdr;
2758 
2759  skb_pull(skb, 14);
2760  card->dev->header_ops->create(skb, card->dev, 0,
2761  card->dev->dev_addr, card->dev->dev_addr,
2762  card->dev->addr_len);
2763  skb_pull(skb, 14);
2764  iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2765  memset(hdr, 0, sizeof(struct qeth_hdr));
2766  hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2767  hdr->hdr.l3.ext_flags = 0;
2768  hdr->hdr.l3.length = skb->len;
2769  hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2770  memset(daddr, 0, sizeof(daddr));
2771  daddr[0] = 0xfe;
2772  daddr[1] = 0x80;
2773  memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2774  memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2775 }
2776 
2777 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2778  struct sk_buff *skb, int ipv, int cast_type)
2779 {
2780  struct dst_entry *dst;
2781 
2782  memset(hdr, 0, sizeof(struct qeth_hdr));
2783  hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2784  hdr->hdr.l3.ext_flags = 0;
2785 
2786  /*
2787  * before we're going to overwrite this location with next hop ip.
2788  * v6 uses passthrough, v4 sets the tag in the QDIO header.
2789  */
2790  if (vlan_tx_tag_present(skb)) {
2791  if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2792  hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2793  else
2794  hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2795  hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2796  }
2797 
2798  hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2799 
2800  rcu_read_lock();
2801  dst = skb_dst(skb);
2802  if (ipv == 4) {
2803  struct rtable *rt = (struct rtable *) dst;
2804  __be32 *pkey = &ip_hdr(skb)->daddr;
2805 
2806  if (rt->rt_gateway)
2807  pkey = &rt->rt_gateway;
2808 
2809  /* IPv4 */
2810  hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2811  memset(hdr->hdr.l3.dest_addr, 0, 12);
2812  *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2813  } else if (ipv == 6) {
2814  struct rt6_info *rt = (struct rt6_info *) dst;
2815  struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2816 
2817  if (!ipv6_addr_any(&rt->rt6i_gateway))
2818  pkey = &rt->rt6i_gateway;
2819 
2820  /* IPv6 */
2821  hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2822  if (card->info.type == QETH_CARD_TYPE_IQD)
2823  hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2824  memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2825  } else {
2826  if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2827  skb->dev->broadcast, 6)) {
2828  /* broadcast? */
2829  hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2830  QETH_HDR_PASSTHRU;
2831  } else {
2832  hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2833  QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2834  QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2835  }
2836  }
2837  rcu_read_unlock();
2838 }
2839 
2840 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2841  struct qeth_hdr *hdr, struct sk_buff *skb)
2842 {
2843  struct iphdr *iph = ip_hdr(skb);
2844 
2845  /* tcph->check contains already the pseudo hdr checksum
2846  * so just set the header flags
2847  */
2848  if (iph->protocol == IPPROTO_UDP)
2849  hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2850  hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2851  QETH_HDR_EXT_CSUM_HDR_REQ;
2852  iph->check = 0;
2853  if (card->options.performance_stats)
2854  card->perf_stats.tx_csum++;
2855 }
2856 
2857 static void qeth_tso_fill_header(struct qeth_card *card,
2858  struct qeth_hdr *qhdr, struct sk_buff *skb)
2859 {
2860  struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2861  struct tcphdr *tcph = tcp_hdr(skb);
2862  struct iphdr *iph = ip_hdr(skb);
2863  struct ipv6hdr *ip6h = ipv6_hdr(skb);
2864 
2865  /*fix header to TSO values ...*/
2866  hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2867  hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2868  /*set values which are fix for the first approach ...*/
2869  hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2870  hdr->ext.imb_hdr_no = 1;
2871  hdr->ext.hdr_type = 1;
2872  hdr->ext.hdr_version = 1;
2873  hdr->ext.hdr_len = 28;
2874  /*insert non-fix values */
2875  hdr->ext.mss = skb_shinfo(skb)->gso_size;
2876  hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2877  hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2878  sizeof(struct qeth_hdr_tso));
2879  tcph->check = 0;
2880  if (skb->protocol == ETH_P_IPV6) {
2881  ip6h->payload_len = 0;
2882  tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2883  0, IPPROTO_TCP, 0);
2884  } else {
2885  /*OSA want us to set these values ...*/
2886  tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2887  0, IPPROTO_TCP, 0);
2888  iph->tot_len = 0;
2889  iph->check = 0;
2890  }
2891 }
2892 
2893 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2894 {
2895  unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2896  tcp_hdr(skb)->doff * 4;
2897  int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2898  int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2899  elements += skb_shinfo(skb)->nr_frags;
2900  return elements;
2901 }
2902 
2903 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2904 {
2905  int rc;
2906  u16 *tag;
2907  struct qeth_hdr *hdr = NULL;
2908  int elements_needed = 0;
2909  int elems;
2910  struct qeth_card *card = dev->ml_priv;
2911  struct sk_buff *new_skb = NULL;
2912  int ipv = qeth_get_ip_version(skb);
2913  int cast_type = qeth_l3_get_cast_type(card, skb);
2914  struct qeth_qdio_out_q *queue = card->qdio.out_qs
2915  [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2916  int tx_bytes = skb->len;
2917  bool large_send;
2918  int data_offset = -1;
2919  int nr_frags;
2920 
2921  if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2922  (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2923  ((card->options.cq == QETH_CQ_ENABLED) &&
2924  (skb->protocol != ETH_P_AF_IUCV)))) ||
2925  card->options.sniffer)
2926  goto tx_drop;
2927 
2928  if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2929  card->stats.tx_carrier_errors++;
2930  goto tx_drop;
2931  }
2932 
2933  if ((cast_type == RTN_BROADCAST) &&
2934  (card->info.broadcast_capable == 0))
2935  goto tx_drop;
2936 
2937  if (card->options.performance_stats) {
2938  card->perf_stats.outbound_cnt++;
2939  card->perf_stats.outbound_start_time = qeth_get_micros();
2940  }
2941 
2942  large_send = skb_is_gso(skb);
2943 
2944  if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2945  (skb_shinfo(skb)->nr_frags == 0)) {
2946  new_skb = skb;
2947  if (new_skb->protocol == ETH_P_AF_IUCV)
2948  data_offset = 0;
2949  else
2950  data_offset = ETH_HLEN;
2951  hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2952  if (!hdr)
2953  goto tx_drop;
2954  elements_needed++;
2955  } else {
2956  /* create a clone with writeable headroom */
2957  new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2958  + VLAN_HLEN);
2959  if (!new_skb)
2960  goto tx_drop;
2961  }
2962 
2963  if (card->info.type == QETH_CARD_TYPE_IQD) {
2964  if (data_offset < 0)
2965  skb_pull(new_skb, ETH_HLEN);
2966  } else {
2967  if (ipv == 4) {
2968  skb_pull(new_skb, ETH_HLEN);
2969  }
2970 
2971  if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2972  skb_push(new_skb, VLAN_HLEN);
2973  skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2974  skb_copy_to_linear_data_offset(new_skb, 4,
2975  new_skb->data + 8, 4);
2976  skb_copy_to_linear_data_offset(new_skb, 8,
2977  new_skb->data + 12, 4);
2978  tag = (u16 *)(new_skb->data + 12);
2979  *tag = __constant_htons(ETH_P_8021Q);
2980  *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2981  }
2982  }
2983 
2984  netif_stop_queue(dev);
2985 
2986  /* fix hardware limitation: as long as we do not have sbal
2987  * chaining we can not send long frag lists
2988  */
2989  if (large_send) {
2990  if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2991  if (skb_linearize(new_skb))
2992  goto tx_drop;
2993  if (card->options.performance_stats)
2994  card->perf_stats.tx_lin++;
2995  }
2996  }
2997 
2998  if (large_send && (cast_type == RTN_UNSPEC)) {
2999  hdr = (struct qeth_hdr *)skb_push(new_skb,
3000  sizeof(struct qeth_hdr_tso));
3001  memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3002  qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3003  qeth_tso_fill_header(card, hdr, new_skb);
3004  elements_needed++;
3005  } else {
3006  if (data_offset < 0) {
3007  hdr = (struct qeth_hdr *)skb_push(new_skb,
3008  sizeof(struct qeth_hdr));
3009  qeth_l3_fill_header(card, hdr, new_skb, ipv,
3010  cast_type);
3011  } else {
3012  if (new_skb->protocol == ETH_P_AF_IUCV)
3013  qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3014  else {
3015  qeth_l3_fill_header(card, hdr, new_skb, ipv,
3016  cast_type);
3017  hdr->hdr.l3.length = new_skb->len - data_offset;
3018  }
3019  }
3020 
3021  if (skb->ip_summed == CHECKSUM_PARTIAL)
3022  qeth_l3_hdr_csum(card, hdr, new_skb);
3023  }
3024 
3025  elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3026  elements_needed);
3027  if (!elems) {
3028  if (data_offset >= 0)
3029  kmem_cache_free(qeth_core_header_cache, hdr);
3030  goto tx_drop;
3031  }
3032  elements_needed += elems;
3033  nr_frags = skb_shinfo(new_skb)->nr_frags;
3034 
3035  if (card->info.type != QETH_CARD_TYPE_IQD) {
3036  int len;
3037  if (large_send)
3038  len = ((unsigned long)tcp_hdr(new_skb) +
3039  tcp_hdr(new_skb)->doff * 4) -
3040  (unsigned long)new_skb->data;
3041  else
3042  len = sizeof(struct qeth_hdr_layer3);
3043 
3044  if (qeth_hdr_chk_and_bounce(new_skb, len))
3045  goto tx_drop;
3046  rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3047  elements_needed);
3048  } else
3049  rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3050  elements_needed, data_offset, 0);
3051 
3052  if (!rc) {
3053  card->stats.tx_packets++;
3054  card->stats.tx_bytes += tx_bytes;
3055  if (new_skb != skb)
3056  dev_kfree_skb_any(skb);
3057  if (card->options.performance_stats) {
3058  if (large_send) {
3059  card->perf_stats.large_send_bytes += tx_bytes;
3060  card->perf_stats.large_send_cnt++;
3061  }
3062  if (nr_frags) {
3063  card->perf_stats.sg_skbs_sent++;
3064  /* nr_frags + skb->data */
3065  card->perf_stats.sg_frags_sent += nr_frags + 1;
3066  }
3067  }
3068  rc = NETDEV_TX_OK;
3069  } else {
3070  if (data_offset >= 0)
3071  kmem_cache_free(qeth_core_header_cache, hdr);
3072 
3073  if (rc == -EBUSY) {
3074  if (new_skb != skb)
3075  dev_kfree_skb_any(new_skb);
3076  return NETDEV_TX_BUSY;
3077  } else
3078  goto tx_drop;
3079  }
3080 
3081  netif_wake_queue(dev);
3082  if (card->options.performance_stats)
3083  card->perf_stats.outbound_time += qeth_get_micros() -
3084  card->perf_stats.outbound_start_time;
3085  return rc;
3086 
3087 tx_drop:
3088  card->stats.tx_dropped++;
3089  card->stats.tx_errors++;
3090  if ((new_skb != skb) && new_skb)
3091  dev_kfree_skb_any(new_skb);
3092  dev_kfree_skb_any(skb);
3093  netif_wake_queue(dev);
3094  return NETDEV_TX_OK;
3095 }
3096 
3097 static int __qeth_l3_open(struct net_device *dev)
3098 {
3099  struct qeth_card *card = dev->ml_priv;
3100  int rc = 0;
3101 
3102  QETH_CARD_TEXT(card, 4, "qethopen");
3103  if (card->state == CARD_STATE_UP)
3104  return rc;
3105  if (card->state != CARD_STATE_SOFTSETUP)
3106  return -ENODEV;
3107  card->data.state = CH_STATE_UP;
3108  card->state = CARD_STATE_UP;
3109  netif_start_queue(dev);
3110 
3111  if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3112  napi_enable(&card->napi);
3113  napi_schedule(&card->napi);
3114  } else
3115  rc = -EIO;
3116  return rc;
3117 }
3118 
3119 static int qeth_l3_open(struct net_device *dev)
3120 {
3121  struct qeth_card *card = dev->ml_priv;
3122 
3123  QETH_CARD_TEXT(card, 5, "qethope_");
3124  if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3125  QETH_CARD_TEXT(card, 3, "openREC");
3126  return -ERESTARTSYS;
3127  }
3128  return __qeth_l3_open(dev);
3129 }
3130 
3131 static int qeth_l3_stop(struct net_device *dev)
3132 {
3133  struct qeth_card *card = dev->ml_priv;
3134 
3135  QETH_CARD_TEXT(card, 4, "qethstop");
3136  netif_tx_disable(dev);
3137  if (card->state == CARD_STATE_UP) {
3138  card->state = CARD_STATE_SOFTSETUP;
3139  napi_disable(&card->napi);
3140  }
3141  return 0;
3142 }
3143 
3144 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3145  netdev_features_t features)
3146 {
3147  struct qeth_card *card = dev->ml_priv;
3148 
3149  if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3150  features &= ~NETIF_F_IP_CSUM;
3151  if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3152  features &= ~NETIF_F_TSO;
3153  if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3154  features &= ~NETIF_F_RXCSUM;
3155 
3156  return features;
3157 }
3158 
3159 static int qeth_l3_set_features(struct net_device *dev,
3160  netdev_features_t features)
3161 {
3162  struct qeth_card *card = dev->ml_priv;
3163  u32 changed = dev->features ^ features;
3164  int err;
3165 
3166  if (!(changed & NETIF_F_RXCSUM))
3167  return 0;
3168 
3169  if (card->state == CARD_STATE_DOWN ||
3170  card->state == CARD_STATE_RECOVER)
3171  return 0;
3172 
3173  err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3174  if (err)
3175  dev->features = features ^ NETIF_F_RXCSUM;
3176 
3177  return err;
3178 }
3179 
3180 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3181  .get_link = ethtool_op_get_link,
3182  .get_strings = qeth_core_get_strings,
3183  .get_ethtool_stats = qeth_core_get_ethtool_stats,
3184  .get_sset_count = qeth_core_get_sset_count,
3185  .get_drvinfo = qeth_core_get_drvinfo,
3186  .get_settings = qeth_core_ethtool_get_settings,
3187 };
3188 
3189 /*
3190  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3191  * NOARP on the netdevice is no option because it also turns off neighbor
3192  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3193  * arp resolution but we want the hard header (packet socket will work
3194  * e.g. tcpdump)
3195  */
3196 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3197 {
3198  n->nud_state = NUD_NOARP;
3199  memcpy(n->ha, "FAKELL", 6);
3200  n->output = n->ops->connected_output;
3201  return 0;
3202 }
3203 
3204 static int
3205 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3206 {
3207  if (np->tbl->family == AF_INET)
3208  np->neigh_setup = qeth_l3_neigh_setup_noarp;
3209 
3210  return 0;
3211 }
3212 
3213 static const struct net_device_ops qeth_l3_netdev_ops = {
3214  .ndo_open = qeth_l3_open,
3215  .ndo_stop = qeth_l3_stop,
3216  .ndo_get_stats = qeth_get_stats,
3217  .ndo_start_xmit = qeth_l3_hard_start_xmit,
3218  .ndo_validate_addr = eth_validate_addr,
3219  .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3220  .ndo_do_ioctl = qeth_l3_do_ioctl,
3221  .ndo_change_mtu = qeth_change_mtu,
3222  .ndo_fix_features = qeth_l3_fix_features,
3223  .ndo_set_features = qeth_l3_set_features,
3224  .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3225  .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3226  .ndo_tx_timeout = qeth_tx_timeout,
3227 };
3228 
3229 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3230  .ndo_open = qeth_l3_open,
3231  .ndo_stop = qeth_l3_stop,
3232  .ndo_get_stats = qeth_get_stats,
3233  .ndo_start_xmit = qeth_l3_hard_start_xmit,
3234  .ndo_validate_addr = eth_validate_addr,
3235  .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3236  .ndo_do_ioctl = qeth_l3_do_ioctl,
3237  .ndo_change_mtu = qeth_change_mtu,
3238  .ndo_fix_features = qeth_l3_fix_features,
3239  .ndo_set_features = qeth_l3_set_features,
3240  .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3241  .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3242  .ndo_tx_timeout = qeth_tx_timeout,
3243  .ndo_neigh_setup = qeth_l3_neigh_setup,
3244 };
3245 
3246 static int qeth_l3_setup_netdev(struct qeth_card *card)
3247 {
3248  if (card->info.type == QETH_CARD_TYPE_OSD ||
3249  card->info.type == QETH_CARD_TYPE_OSX) {
3250  if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3251  (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3252  pr_info("qeth_l3: ignoring TR device\n");
3253  return -ENODEV;
3254  } else {
3255  card->dev = alloc_etherdev(0);
3256  if (!card->dev)
3257  return -ENODEV;
3258  card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3259 
3260  /*IPv6 address autoconfiguration stuff*/
3261  qeth_l3_get_unique_id(card);
3262  if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3263  card->dev->dev_id = card->info.unique_id &
3264  0xffff;
3265  if (!card->info.guestlan) {
3266  card->dev->hw_features = NETIF_F_SG |
3267  NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3268  NETIF_F_TSO;
3269  card->dev->features = NETIF_F_RXCSUM;
3270  }
3271  }
3272  } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3273  card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3274  if (!card->dev)
3275  return -ENODEV;
3276  card->dev->flags |= IFF_NOARP;
3277  card->dev->netdev_ops = &qeth_l3_netdev_ops;
3278  qeth_l3_iqd_read_initial_mac(card);
3279  if (card->options.hsuid[0])
3280  memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3281  } else
3282  return -ENODEV;
3283 
3284  card->dev->ml_priv = card;
3285  card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3286  card->dev->mtu = card->info.initial_mtu;
3287  SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3288  card->dev->features |= NETIF_F_HW_VLAN_TX |
3289  NETIF_F_HW_VLAN_RX |
3290  NETIF_F_HW_VLAN_FILTER;
3291  card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3292  card->dev->gso_max_size = 15 * PAGE_SIZE;
3293 
3294  SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3295  netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3296  return register_netdev(card->dev);
3297 }
3298 
3299 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3300 {
3301  struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3302 
3303  qeth_l3_create_device_attributes(&gdev->dev);
3304  card->options.layer2 = 0;
3305  card->info.hwtrap = 0;
3306  return 0;
3307 }
3308 
3309 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3310 {
3311  struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3312 
3313  qeth_l3_remove_device_attributes(&cgdev->dev);
3314 
3315  qeth_set_allowed_threads(card, 0, 1);
3316  wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3317 
3318  if (cgdev->state == CCWGROUP_ONLINE)
3319  qeth_l3_set_offline(cgdev);
3320 
3321  if (card->dev) {
3322  unregister_netdev(card->dev);
3323  card->dev = NULL;
3324  }
3325 
3326  qeth_l3_clear_ip_list(card, 0);
3327  qeth_l3_clear_ipato_list(card);
3328  return;
3329 }
3330 
3331 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3332 {
3333  struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3334  int rc = 0;
3335  enum qeth_card_states recover_flag;
3336 
3337  BUG_ON(!card);
3338  mutex_lock(&card->discipline_mutex);
3339  mutex_lock(&card->conf_mutex);
3340  QETH_DBF_TEXT(SETUP, 2, "setonlin");
3341  QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3342 
3343  recover_flag = card->state;
3344  rc = qeth_core_hardsetup_card(card);
3345  if (rc) {
3346  QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3347  rc = -ENODEV;
3348  goto out_remove;
3349  }
3350 
3351  if (!card->dev && qeth_l3_setup_netdev(card)) {
3352  rc = -ENODEV;
3353  goto out_remove;
3354  }
3355 
3356  if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3357  if (card->info.hwtrap &&
3358  qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3359  card->info.hwtrap = 0;
3360  } else
3361  card->info.hwtrap = 0;
3362 
3363  card->state = CARD_STATE_HARDSETUP;
3364  memset(&card->rx, 0, sizeof(struct qeth_rx));
3365  qeth_print_status_message(card);
3366 
3367  /* softsetup */
3368  QETH_DBF_TEXT(SETUP, 2, "softsetp");
3369 
3370  rc = qeth_send_startlan(card);
3371  if (rc) {
3372  QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3373  if (rc == 0xe080) {
3374  dev_warn(&card->gdev->dev,
3375  "The LAN is offline\n");
3376  card->lan_online = 0;
3377  goto contin;
3378  }
3379  rc = -ENODEV;
3380  goto out_remove;
3381  } else
3382  card->lan_online = 1;
3383 
3384 contin:
3385  rc = qeth_l3_setadapter_parms(card);
3386  if (rc)
3387  QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3388  if (!card->options.sniffer) {
3389  rc = qeth_l3_start_ipassists(card);
3390  if (rc)
3391  QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3392  rc = qeth_l3_setrouting_v4(card);
3393  if (rc)
3394  QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3395  rc = qeth_l3_setrouting_v6(card);
3396  if (rc)
3397  QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3398  }
3399  netif_tx_disable(card->dev);
3400 
3401  rc = qeth_init_qdio_queues(card);
3402  if (rc) {
3403  QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3404  rc = -ENODEV;
3405  goto out_remove;
3406  }
3407  card->state = CARD_STATE_SOFTSETUP;
3408 
3409  qeth_set_allowed_threads(card, 0xffffffff, 0);
3410  qeth_l3_set_ip_addr_list(card);
3411  if (card->lan_online)
3412  netif_carrier_on(card->dev);
3413  else
3414  netif_carrier_off(card->dev);
3415  if (recover_flag == CARD_STATE_RECOVER) {
3416  rtnl_lock();
3417  if (recovery_mode)
3418  __qeth_l3_open(card->dev);
3419  else
3420  dev_open(card->dev);
3421  qeth_l3_set_multicast_list(card->dev);
3422  rtnl_unlock();
3423  }
3424  /* let user_space know that device is online */
3425  kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3426  mutex_unlock(&card->conf_mutex);
3427  mutex_unlock(&card->discipline_mutex);
3428  return 0;
3429 out_remove:
3430  qeth_l3_stop_card(card, 0);
3431  ccw_device_set_offline(CARD_DDEV(card));
3432  ccw_device_set_offline(CARD_WDEV(card));
3433  ccw_device_set_offline(CARD_RDEV(card));
3434  if (recover_flag == CARD_STATE_RECOVER)
3435  card->state = CARD_STATE_RECOVER;
3436  else
3437  card->state = CARD_STATE_DOWN;
3438  mutex_unlock(&card->conf_mutex);
3439  mutex_unlock(&card->discipline_mutex);
3440  return rc;
3441 }
3442 
3443 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3444 {
3445  return __qeth_l3_set_online(gdev, 0);
3446 }
3447 
3448 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3449  int recovery_mode)
3450 {
3451  struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3452  int rc = 0, rc2 = 0, rc3 = 0;
3453  enum qeth_card_states recover_flag;
3454 
3455  mutex_lock(&card->discipline_mutex);
3456  mutex_lock(&card->conf_mutex);
3457  QETH_DBF_TEXT(SETUP, 3, "setoffl");
3458  QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3459 
3460  if (card->dev && netif_carrier_ok(card->dev))
3461  netif_carrier_off(card->dev);
3462  recover_flag = card->state;
3463  if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3464  qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3465  card->info.hwtrap = 1;
3466  }
3467  qeth_l3_stop_card(card, recovery_mode);
3468  if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3469  rtnl_lock();
3470  call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3471  rtnl_unlock();
3472  }
3473  rc = ccw_device_set_offline(CARD_DDEV(card));
3474  rc2 = ccw_device_set_offline(CARD_WDEV(card));
3475  rc3 = ccw_device_set_offline(CARD_RDEV(card));
3476  if (!rc)
3477  rc = (rc2) ? rc2 : rc3;
3478  if (rc)
3479  QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3480  if (recover_flag == CARD_STATE_UP)
3481  card->state = CARD_STATE_RECOVER;
3482  /* let user_space know that device is offline */
3483  kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3484  mutex_unlock(&card->conf_mutex);
3485  mutex_unlock(&card->discipline_mutex);
3486  return 0;
3487 }
3488 
3489 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3490 {
3491  return __qeth_l3_set_offline(cgdev, 0);
3492 }
3493 
3494 static int qeth_l3_recover(void *ptr)
3495 {
3496  struct qeth_card *card;
3497  int rc = 0;
3498 
3499  card = (struct qeth_card *) ptr;
3500  QETH_CARD_TEXT(card, 2, "recover1");
3501  QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3502  if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3503  return 0;
3504  QETH_CARD_TEXT(card, 2, "recover2");
3505  dev_warn(&card->gdev->dev,
3506  "A recovery process has been started for the device\n");
3507  __qeth_l3_set_offline(card->gdev, 1);
3508  rc = __qeth_l3_set_online(card->gdev, 1);
3509  if (!rc)
3510  dev_info(&card->gdev->dev,
3511  "Device successfully recovered!\n");
3512  else {
3513  if (rtnl_trylock()) {
3514  dev_close(card->dev);
3515  rtnl_unlock();
3516  dev_warn(&card->gdev->dev, "The qeth device driver "
3517  "failed to recover an error on the device\n");
3518  }
3519  }
3520  qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3521  qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3522  return 0;
3523 }
3524 
3525 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3526 {
3527  struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3528  qeth_set_allowed_threads(card, 0, 1);
3529  if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3530  qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3531  qeth_qdio_clear_card(card, 0);
3532  qeth_clear_qdio_buffers(card);
3533 }
3534 
3535 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3536 {
3537  struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3538 
3539  if (card->dev)
3540  netif_device_detach(card->dev);
3541  qeth_set_allowed_threads(card, 0, 1);
3542  wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3543  if (gdev->state == CCWGROUP_OFFLINE)
3544  return 0;
3545  if (card->state == CARD_STATE_UP) {
3546  if (card->info.hwtrap)
3547  qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3548  __qeth_l3_set_offline(card->gdev, 1);
3549  } else
3550  __qeth_l3_set_offline(card->gdev, 0);
3551  return 0;
3552 }
3553 
3554 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3555 {
3556  struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3557  int rc = 0;
3558 
3559  if (gdev->state == CCWGROUP_OFFLINE)
3560  goto out;
3561 
3562  if (card->state == CARD_STATE_RECOVER) {
3563  rc = __qeth_l3_set_online(card->gdev, 1);
3564  if (rc) {
3565  rtnl_lock();
3566  dev_close(card->dev);
3567  rtnl_unlock();
3568  }
3569  } else
3570  rc = __qeth_l3_set_online(card->gdev, 0);
3571 out:
3572  qeth_set_allowed_threads(card, 0xffffffff, 0);
3573  if (card->dev)
3574  netif_device_attach(card->dev);
3575  if (rc)
3576  dev_warn(&card->gdev->dev, "The qeth device driver "
3577  "failed to recover an error on the device\n");
3578  return rc;
3579 }
3580 
3581 struct qeth_discipline qeth_l3_discipline = {
3582  .start_poll = qeth_qdio_start_poll,
3583  .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3584  .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3585  .recover = qeth_l3_recover,
3586  .setup = qeth_l3_probe_device,
3587  .remove = qeth_l3_remove_device,
3588  .set_online = qeth_l3_set_online,
3589  .set_offline = qeth_l3_set_offline,
3590  .shutdown = qeth_l3_shutdown,
3591  .freeze = qeth_l3_pm_suspend,
3592  .thaw = qeth_l3_pm_resume,
3593  .restore = qeth_l3_pm_resume,
3594 };
3595 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3596 
3597 static int qeth_l3_ip_event(struct notifier_block *this,
3598  unsigned long event, void *ptr)
3599 {
3600  struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3601  struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3602  struct qeth_ipaddr *addr;
3603  struct qeth_card *card;
3604 
3605  if (dev_net(dev) != &init_net)
3606  return NOTIFY_DONE;
3607 
3608  card = qeth_l3_get_card_from_dev(dev);
3609  if (!card)
3610  return NOTIFY_DONE;
3611  QETH_CARD_TEXT(card, 3, "ipevent");
3612 
3613  addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3614  if (addr != NULL) {
3615  addr->u.a4.addr = ifa->ifa_address;
3616  addr->u.a4.mask = ifa->ifa_mask;
3617  addr->type = QETH_IP_TYPE_NORMAL;
3618  } else
3619  goto out;
3620 
3621  switch (event) {
3622  case NETDEV_UP:
3623  if (!qeth_l3_add_ip(card, addr))
3624  kfree(addr);
3625  break;
3626  case NETDEV_DOWN:
3627  if (!qeth_l3_delete_ip(card, addr))
3628  kfree(addr);
3629  break;
3630  default:
3631  break;
3632  }
3633  qeth_l3_set_ip_addr_list(card);
3634 out:
3635  return NOTIFY_DONE;
3636 }
3637 
3638 static struct notifier_block qeth_l3_ip_notifier = {
3639  qeth_l3_ip_event,
3640  NULL,
3641 };
3642 
3643 #ifdef CONFIG_QETH_IPV6
3644 
3647 static int qeth_l3_ip6_event(struct notifier_block *this,
3648  unsigned long event, void *ptr)
3649 {
3650  struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3651  struct net_device *dev = (struct net_device *)ifa->idev->dev;
3652  struct qeth_ipaddr *addr;
3653  struct qeth_card *card;
3654 
3655  card = qeth_l3_get_card_from_dev(dev);
3656  if (!card)
3657  return NOTIFY_DONE;
3658  QETH_CARD_TEXT(card, 3, "ip6event");
3659  if (!qeth_is_supported(card, IPA_IPV6))
3660  return NOTIFY_DONE;
3661 
3662  addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3663  if (addr != NULL) {
3664  memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3665  addr->u.a6.pfxlen = ifa->prefix_len;
3666  addr->type = QETH_IP_TYPE_NORMAL;
3667  } else
3668  goto out;
3669 
3670  switch (event) {
3671  case NETDEV_UP:
3672  if (!qeth_l3_add_ip(card, addr))
3673  kfree(addr);
3674  break;
3675  case NETDEV_DOWN:
3676  if (!qeth_l3_delete_ip(card, addr))
3677  kfree(addr);
3678  break;
3679  default:
3680  break;
3681  }
3682  qeth_l3_set_ip_addr_list(card);
3683 out:
3684  return NOTIFY_DONE;
3685 }
3686 
3687 static struct notifier_block qeth_l3_ip6_notifier = {
3688  qeth_l3_ip6_event,
3689  NULL,
3690 };
3691 #endif
3692 
3693 static int qeth_l3_register_notifiers(void)
3694 {
3695  int rc;
3696 
3697  QETH_DBF_TEXT(SETUP, 5, "regnotif");
3698  rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3699  if (rc)
3700  return rc;
3701 #ifdef CONFIG_QETH_IPV6
3702  rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3703  if (rc) {
3704  unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3705  return rc;
3706  }
3707 #else
3708  pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3709 #endif
3710  return 0;
3711 }
3712 
3713 static void qeth_l3_unregister_notifiers(void)
3714 {
3715 
3716  QETH_DBF_TEXT(SETUP, 5, "unregnot");
3717  BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3718 #ifdef CONFIG_QETH_IPV6
3719  BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3720 #endif /* QETH_IPV6 */
3721 }
3722 
3723 static int __init qeth_l3_init(void)
3724 {
3725  int rc = 0;
3726 
3727  pr_info("register layer 3 discipline\n");
3728  rc = qeth_l3_register_notifiers();
3729  return rc;
3730 }
3731 
3732 static void __exit qeth_l3_exit(void)
3733 {
3734  qeth_l3_unregister_notifiers();
3735  pr_info("unregister layer 3 discipline\n");
3736 }
3737 
3738 module_init(qeth_l3_init);
3739 module_exit(qeth_l3_exit);
3740 MODULE_AUTHOR("Frank Blaschka <[email protected]>");
3741 MODULE_DESCRIPTION("qeth layer 3 discipline");
3742 MODULE_LICENSE("GPL");
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