1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
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
qeth_l3_isxdigit(char * buf)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
qeth_l3_ipaddr4_to_string(const __u8 * addr,char * buf)58 static 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
qeth_l3_string_to_ipaddr4(const char * buf,__u8 * addr)63 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
64 {
65 int count = 0, rc = 0;
66 unsigned 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
qeth_l3_ipaddr6_to_string(const __u8 * addr,char * buf)81 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
82 {
83 sprintf(buf, "%pI6", addr);
84 }
85
qeth_l3_string_to_ipaddr6(const char * buf,__u8 * addr)86 static 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
qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto,const __u8 * addr,char * buf)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
qeth_l3_string_to_ipaddr(const char * buf,enum qeth_prot_versions proto,__u8 * addr)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
qeth_l3_convert_addr_to_bits(u8 * addr,u8 * bits,int len)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
qeth_l3_is_addr_covered_by_ipato(struct qeth_card * card,struct qeth_ipaddr * addr)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 */
__qeth_l3_insert_ip_todo(struct qeth_card * card,struct qeth_ipaddr * addr,int add)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
qeth_l3_delete_ip(struct qeth_card * card,struct qeth_ipaddr * addr)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
qeth_l3_add_ip(struct qeth_card * card,struct qeth_ipaddr * addr)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
qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)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
qeth_l3_delete_mc_addresses(struct qeth_card * card)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 */
__qeth_l3_ref_ip_on_card(struct qeth_card * card,struct qeth_ipaddr * todo,struct qeth_ipaddr ** __addr)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
__qeth_l3_delete_all_mc(struct qeth_card * card,unsigned long * flags)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
qeth_l3_set_ip_addr_list(struct qeth_card * card)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 (!qeth_card_hw_is_reachable(card) || card->options.sniffer)
436 return;
437
438 spin_lock_irqsave(&card->ip_lock, flags);
439 tbd_list = card->ip_tbd_list;
440 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
441 if (!card->ip_tbd_list) {
442 QETH_CARD_TEXT(card, 0, "silnomem");
443 card->ip_tbd_list = tbd_list;
444 spin_unlock_irqrestore(&card->ip_lock, flags);
445 return;
446 } else
447 INIT_LIST_HEAD(card->ip_tbd_list);
448
449 while (!list_empty(tbd_list)) {
450 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
451 list_del(&todo->entry);
452 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
453 __qeth_l3_delete_all_mc(card, &flags);
454 kfree(todo);
455 continue;
456 }
457 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
458 if (rc == 0) {
459 /* nothing to be done; only adjusted refcount */
460 kfree(todo);
461 } else if (rc == 1) {
462 /* new entry to be added to on-card list */
463 spin_unlock_irqrestore(&card->ip_lock, flags);
464 rc = qeth_l3_register_addr_entry(card, todo);
465 spin_lock_irqsave(&card->ip_lock, flags);
466 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
467 list_add_tail(&todo->entry, &card->ip_list);
468 else
469 kfree(todo);
470 } else if (rc == -1) {
471 /* on-card entry to be removed */
472 list_del_init(&addr->entry);
473 spin_unlock_irqrestore(&card->ip_lock, flags);
474 rc = qeth_l3_deregister_addr_entry(card, addr);
475 spin_lock_irqsave(&card->ip_lock, flags);
476 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
477 kfree(addr);
478 else
479 list_add_tail(&addr->entry, &card->ip_list);
480 kfree(todo);
481 }
482 }
483 spin_unlock_irqrestore(&card->ip_lock, flags);
484 kfree(tbd_list);
485 }
486
qeth_l3_clear_ip_list(struct qeth_card * card,int recover)487 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
488 {
489 struct qeth_ipaddr *addr, *tmp;
490 unsigned long flags;
491
492 QETH_CARD_TEXT(card, 4, "clearip");
493 if (recover && card->options.sniffer)
494 return;
495 spin_lock_irqsave(&card->ip_lock, flags);
496 /* clear todo list */
497 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
498 list_del(&addr->entry);
499 kfree(addr);
500 }
501
502 while (!list_empty(&card->ip_list)) {
503 addr = list_entry(card->ip_list.next,
504 struct qeth_ipaddr, entry);
505 list_del_init(&addr->entry);
506 if (!recover || addr->is_multicast) {
507 kfree(addr);
508 continue;
509 }
510 list_add_tail(&addr->entry, card->ip_tbd_list);
511 }
512 spin_unlock_irqrestore(&card->ip_lock, flags);
513 }
514
qeth_l3_address_exists_in_list(struct list_head * list,struct qeth_ipaddr * addr,int same_type)515 static int qeth_l3_address_exists_in_list(struct list_head *list,
516 struct qeth_ipaddr *addr, int same_type)
517 {
518 struct qeth_ipaddr *tmp;
519
520 list_for_each_entry(tmp, list, entry) {
521 if ((tmp->proto == QETH_PROT_IPV4) &&
522 (addr->proto == QETH_PROT_IPV4) &&
523 ((same_type && (tmp->type == addr->type)) ||
524 (!same_type && (tmp->type != addr->type))) &&
525 (tmp->u.a4.addr == addr->u.a4.addr))
526 return 1;
527
528 if ((tmp->proto == QETH_PROT_IPV6) &&
529 (addr->proto == QETH_PROT_IPV6) &&
530 ((same_type && (tmp->type == addr->type)) ||
531 (!same_type && (tmp->type != addr->type))) &&
532 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
533 sizeof(struct in6_addr)) == 0))
534 return 1;
535
536 }
537 return 0;
538 }
539
qeth_l3_send_setdelmc(struct qeth_card * card,struct qeth_ipaddr * addr,int ipacmd)540 static int qeth_l3_send_setdelmc(struct qeth_card *card,
541 struct qeth_ipaddr *addr, int ipacmd)
542 {
543 int rc;
544 struct qeth_cmd_buffer *iob;
545 struct qeth_ipa_cmd *cmd;
546
547 QETH_CARD_TEXT(card, 4, "setdelmc");
548
549 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
550 if (!iob)
551 return -ENOMEM;
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
qeth_l3_fill_netmask(u8 * netmask,unsigned int len)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
qeth_l3_send_setdelip(struct qeth_card * card,struct qeth_ipaddr * addr,int ipacmd,unsigned int flags)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 if (!iob)
592 return -ENOMEM;
593 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
594 if (addr->proto == QETH_PROT_IPV6) {
595 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
596 sizeof(struct in6_addr));
597 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
598 memcpy(cmd->data.setdelip6.mask, netmask,
599 sizeof(struct in6_addr));
600 cmd->data.setdelip6.flags = flags;
601 } else {
602 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
603 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
604 cmd->data.setdelip4.flags = flags;
605 }
606
607 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
608
609 return rc;
610 }
611
qeth_l3_send_setrouting(struct qeth_card * card,enum qeth_routing_types type,enum qeth_prot_versions prot)612 static int qeth_l3_send_setrouting(struct qeth_card *card,
613 enum qeth_routing_types type, enum qeth_prot_versions prot)
614 {
615 int rc;
616 struct qeth_ipa_cmd *cmd;
617 struct qeth_cmd_buffer *iob;
618
619 QETH_CARD_TEXT(card, 4, "setroutg");
620 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
621 if (!iob)
622 return -ENOMEM;
623 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
624 cmd->data.setrtg.type = (type);
625 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
626
627 return rc;
628 }
629
qeth_l3_correct_routing_type(struct qeth_card * card,enum qeth_routing_types * type,enum qeth_prot_versions prot)630 static int qeth_l3_correct_routing_type(struct qeth_card *card,
631 enum qeth_routing_types *type, enum qeth_prot_versions prot)
632 {
633 if (card->info.type == QETH_CARD_TYPE_IQD) {
634 switch (*type) {
635 case NO_ROUTER:
636 case PRIMARY_CONNECTOR:
637 case SECONDARY_CONNECTOR:
638 case MULTICAST_ROUTER:
639 return 0;
640 default:
641 goto out_inval;
642 }
643 } else {
644 switch (*type) {
645 case NO_ROUTER:
646 case PRIMARY_ROUTER:
647 case SECONDARY_ROUTER:
648 return 0;
649 case MULTICAST_ROUTER:
650 if (qeth_is_ipafunc_supported(card, prot,
651 IPA_OSA_MC_ROUTER))
652 return 0;
653 default:
654 goto out_inval;
655 }
656 }
657 out_inval:
658 *type = NO_ROUTER;
659 return -EINVAL;
660 }
661
qeth_l3_setrouting_v4(struct qeth_card * card)662 int qeth_l3_setrouting_v4(struct qeth_card *card)
663 {
664 int rc;
665
666 QETH_CARD_TEXT(card, 3, "setrtg4");
667
668 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
669 QETH_PROT_IPV4);
670 if (rc)
671 return rc;
672
673 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
674 QETH_PROT_IPV4);
675 if (rc) {
676 card->options.route4.type = NO_ROUTER;
677 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
678 " on %s. Type set to 'no router'.\n", rc,
679 QETH_CARD_IFNAME(card));
680 }
681 return rc;
682 }
683
qeth_l3_setrouting_v6(struct qeth_card * card)684 int qeth_l3_setrouting_v6(struct qeth_card *card)
685 {
686 int rc = 0;
687
688 QETH_CARD_TEXT(card, 3, "setrtg6");
689 #ifdef CONFIG_QETH_IPV6
690
691 if (!qeth_is_supported(card, IPA_IPV6))
692 return 0;
693 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
694 QETH_PROT_IPV6);
695 if (rc)
696 return rc;
697
698 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
699 QETH_PROT_IPV6);
700 if (rc) {
701 card->options.route6.type = NO_ROUTER;
702 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
703 " on %s. Type set to 'no router'.\n", rc,
704 QETH_CARD_IFNAME(card));
705 }
706 #endif
707 return rc;
708 }
709
710 /*
711 * IP address takeover related functions
712 */
qeth_l3_clear_ipato_list(struct qeth_card * card)713 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
714 {
715
716 struct qeth_ipato_entry *ipatoe, *tmp;
717 unsigned long flags;
718
719 spin_lock_irqsave(&card->ip_lock, flags);
720 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
721 list_del(&ipatoe->entry);
722 kfree(ipatoe);
723 }
724 spin_unlock_irqrestore(&card->ip_lock, flags);
725 }
726
qeth_l3_add_ipato_entry(struct qeth_card * card,struct qeth_ipato_entry * new)727 int qeth_l3_add_ipato_entry(struct qeth_card *card,
728 struct qeth_ipato_entry *new)
729 {
730 struct qeth_ipato_entry *ipatoe;
731 unsigned long flags;
732 int rc = 0;
733
734 QETH_CARD_TEXT(card, 2, "addipato");
735 spin_lock_irqsave(&card->ip_lock, flags);
736 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
737 if (ipatoe->proto != new->proto)
738 continue;
739 if (!memcmp(ipatoe->addr, new->addr,
740 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
741 (ipatoe->mask_bits == new->mask_bits)) {
742 rc = -EEXIST;
743 break;
744 }
745 }
746 if (!rc)
747 list_add_tail(&new->entry, &card->ipato.entries);
748
749 spin_unlock_irqrestore(&card->ip_lock, flags);
750 return rc;
751 }
752
qeth_l3_del_ipato_entry(struct qeth_card * card,enum qeth_prot_versions proto,u8 * addr,int mask_bits)753 void qeth_l3_del_ipato_entry(struct qeth_card *card,
754 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
755 {
756 struct qeth_ipato_entry *ipatoe, *tmp;
757 unsigned long flags;
758
759 QETH_CARD_TEXT(card, 2, "delipato");
760 spin_lock_irqsave(&card->ip_lock, flags);
761 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
762 if (ipatoe->proto != proto)
763 continue;
764 if (!memcmp(ipatoe->addr, addr,
765 (proto == QETH_PROT_IPV4)? 4:16) &&
766 (ipatoe->mask_bits == mask_bits)) {
767 list_del(&ipatoe->entry);
768 kfree(ipatoe);
769 }
770 }
771 spin_unlock_irqrestore(&card->ip_lock, flags);
772 }
773
774 /*
775 * VIPA related functions
776 */
qeth_l3_add_vipa(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)777 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
778 const u8 *addr)
779 {
780 struct qeth_ipaddr *ipaddr;
781 unsigned long flags;
782 int rc = 0;
783
784 ipaddr = qeth_l3_get_addr_buffer(proto);
785 if (ipaddr) {
786 if (proto == QETH_PROT_IPV4) {
787 QETH_CARD_TEXT(card, 2, "addvipa4");
788 memcpy(&ipaddr->u.a4.addr, addr, 4);
789 ipaddr->u.a4.mask = 0;
790 } else if (proto == QETH_PROT_IPV6) {
791 QETH_CARD_TEXT(card, 2, "addvipa6");
792 memcpy(&ipaddr->u.a6.addr, addr, 16);
793 ipaddr->u.a6.pfxlen = 0;
794 }
795 ipaddr->type = QETH_IP_TYPE_VIPA;
796 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
797 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
798 } else
799 return -ENOMEM;
800 spin_lock_irqsave(&card->ip_lock, flags);
801 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
802 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
803 rc = -EEXIST;
804 spin_unlock_irqrestore(&card->ip_lock, flags);
805 if (rc) {
806 kfree(ipaddr);
807 return rc;
808 }
809 if (!qeth_l3_add_ip(card, ipaddr))
810 kfree(ipaddr);
811 qeth_l3_set_ip_addr_list(card);
812 return rc;
813 }
814
qeth_l3_del_vipa(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)815 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
816 const u8 *addr)
817 {
818 struct qeth_ipaddr *ipaddr;
819
820 ipaddr = qeth_l3_get_addr_buffer(proto);
821 if (ipaddr) {
822 if (proto == QETH_PROT_IPV4) {
823 QETH_CARD_TEXT(card, 2, "delvipa4");
824 memcpy(&ipaddr->u.a4.addr, addr, 4);
825 ipaddr->u.a4.mask = 0;
826 } else if (proto == QETH_PROT_IPV6) {
827 QETH_CARD_TEXT(card, 2, "delvipa6");
828 memcpy(&ipaddr->u.a6.addr, addr, 16);
829 ipaddr->u.a6.pfxlen = 0;
830 }
831 ipaddr->type = QETH_IP_TYPE_VIPA;
832 } else
833 return;
834 if (!qeth_l3_delete_ip(card, ipaddr))
835 kfree(ipaddr);
836 qeth_l3_set_ip_addr_list(card);
837 }
838
839 /*
840 * proxy ARP related functions
841 */
qeth_l3_add_rxip(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)842 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
843 const u8 *addr)
844 {
845 struct qeth_ipaddr *ipaddr;
846 unsigned long flags;
847 int rc = 0;
848
849 ipaddr = qeth_l3_get_addr_buffer(proto);
850 if (ipaddr) {
851 if (proto == QETH_PROT_IPV4) {
852 QETH_CARD_TEXT(card, 2, "addrxip4");
853 memcpy(&ipaddr->u.a4.addr, addr, 4);
854 ipaddr->u.a4.mask = 0;
855 } else if (proto == QETH_PROT_IPV6) {
856 QETH_CARD_TEXT(card, 2, "addrxip6");
857 memcpy(&ipaddr->u.a6.addr, addr, 16);
858 ipaddr->u.a6.pfxlen = 0;
859 }
860 ipaddr->type = QETH_IP_TYPE_RXIP;
861 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
862 ipaddr->del_flags = 0;
863 } else
864 return -ENOMEM;
865 spin_lock_irqsave(&card->ip_lock, flags);
866 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
867 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
868 rc = -EEXIST;
869 spin_unlock_irqrestore(&card->ip_lock, flags);
870 if (rc) {
871 kfree(ipaddr);
872 return rc;
873 }
874 if (!qeth_l3_add_ip(card, ipaddr))
875 kfree(ipaddr);
876 qeth_l3_set_ip_addr_list(card);
877 return 0;
878 }
879
qeth_l3_del_rxip(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)880 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
881 const u8 *addr)
882 {
883 struct qeth_ipaddr *ipaddr;
884
885 ipaddr = qeth_l3_get_addr_buffer(proto);
886 if (ipaddr) {
887 if (proto == QETH_PROT_IPV4) {
888 QETH_CARD_TEXT(card, 2, "addrxip4");
889 memcpy(&ipaddr->u.a4.addr, addr, 4);
890 ipaddr->u.a4.mask = 0;
891 } else if (proto == QETH_PROT_IPV6) {
892 QETH_CARD_TEXT(card, 2, "addrxip6");
893 memcpy(&ipaddr->u.a6.addr, addr, 16);
894 ipaddr->u.a6.pfxlen = 0;
895 }
896 ipaddr->type = QETH_IP_TYPE_RXIP;
897 } else
898 return;
899 if (!qeth_l3_delete_ip(card, ipaddr))
900 kfree(ipaddr);
901 qeth_l3_set_ip_addr_list(card);
902 }
903
qeth_l3_register_addr_entry(struct qeth_card * card,struct qeth_ipaddr * addr)904 static int qeth_l3_register_addr_entry(struct qeth_card *card,
905 struct qeth_ipaddr *addr)
906 {
907 char buf[50];
908 int rc = 0;
909 int cnt = 3;
910
911 if (addr->proto == QETH_PROT_IPV4) {
912 QETH_CARD_TEXT(card, 2, "setaddr4");
913 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
914 } else if (addr->proto == QETH_PROT_IPV6) {
915 QETH_CARD_TEXT(card, 2, "setaddr6");
916 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
917 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
918 } else {
919 QETH_CARD_TEXT(card, 2, "setaddr?");
920 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
921 }
922 do {
923 if (addr->is_multicast)
924 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
925 else
926 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
927 addr->set_flags);
928 if (rc)
929 QETH_CARD_TEXT(card, 2, "failed");
930 } while ((--cnt > 0) && rc);
931 if (rc) {
932 QETH_CARD_TEXT(card, 2, "FAILED");
933 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
934 dev_warn(&card->gdev->dev,
935 "Registering IP address %s failed\n", buf);
936 }
937 return rc;
938 }
939
qeth_l3_deregister_addr_entry(struct qeth_card * card,struct qeth_ipaddr * addr)940 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
941 struct qeth_ipaddr *addr)
942 {
943 int rc = 0;
944
945 if (addr->proto == QETH_PROT_IPV4) {
946 QETH_CARD_TEXT(card, 2, "deladdr4");
947 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
948 } else if (addr->proto == QETH_PROT_IPV6) {
949 QETH_CARD_TEXT(card, 2, "deladdr6");
950 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
951 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
952 } else {
953 QETH_CARD_TEXT(card, 2, "deladdr?");
954 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
955 }
956 if (addr->is_multicast)
957 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
958 else
959 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
960 addr->del_flags);
961 if (rc)
962 QETH_CARD_TEXT(card, 2, "failed");
963
964 return rc;
965 }
966
qeth_l3_get_qeth_hdr_flags4(int cast_type)967 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
968 {
969 if (cast_type == RTN_MULTICAST)
970 return QETH_CAST_MULTICAST;
971 if (cast_type == RTN_BROADCAST)
972 return QETH_CAST_BROADCAST;
973 return QETH_CAST_UNICAST;
974 }
975
qeth_l3_get_qeth_hdr_flags6(int cast_type)976 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
977 {
978 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
979 if (cast_type == RTN_MULTICAST)
980 return ct | QETH_CAST_MULTICAST;
981 if (cast_type == RTN_ANYCAST)
982 return ct | QETH_CAST_ANYCAST;
983 if (cast_type == RTN_BROADCAST)
984 return ct | QETH_CAST_BROADCAST;
985 return ct | QETH_CAST_UNICAST;
986 }
987
qeth_l3_setadapter_parms(struct qeth_card * card)988 static int qeth_l3_setadapter_parms(struct qeth_card *card)
989 {
990 int rc;
991
992 QETH_DBF_TEXT(SETUP, 2, "setadprm");
993
994 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
995 dev_info(&card->gdev->dev,
996 "set adapter parameters not supported.\n");
997 QETH_DBF_TEXT(SETUP, 2, " notsupp");
998 return 0;
999 }
1000 rc = qeth_query_setadapterparms(card);
1001 if (rc) {
1002 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1003 "0x%x\n", dev_name(&card->gdev->dev), rc);
1004 return rc;
1005 }
1006 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1007 rc = qeth_setadpparms_change_macaddr(card);
1008 if (rc)
1009 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1010 " address failed\n");
1011 }
1012
1013 return rc;
1014 }
1015
qeth_l3_default_setassparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1016 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1017 struct qeth_reply *reply, unsigned long data)
1018 {
1019 struct qeth_ipa_cmd *cmd;
1020
1021 QETH_CARD_TEXT(card, 4, "defadpcb");
1022
1023 cmd = (struct qeth_ipa_cmd *) data;
1024 if (cmd->hdr.return_code == 0) {
1025 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1026 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1027 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1028 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1029 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1030 }
1031 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1032 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1033 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1034 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1035 }
1036 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1037 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1038 card->info.tx_csum_mask =
1039 cmd->data.setassparms.data.flags_32bit;
1040 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1041 }
1042
1043 return 0;
1044 }
1045
qeth_l3_get_setassparms_cmd(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,__u16 len,enum qeth_prot_versions prot)1046 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1047 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1048 __u16 len, enum qeth_prot_versions prot)
1049 {
1050 struct qeth_cmd_buffer *iob;
1051 struct qeth_ipa_cmd *cmd;
1052
1053 QETH_CARD_TEXT(card, 4, "getasscm");
1054 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1055
1056 if (iob) {
1057 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1058 cmd->data.setassparms.hdr.assist_no = ipa_func;
1059 cmd->data.setassparms.hdr.length = 8 + len;
1060 cmd->data.setassparms.hdr.command_code = cmd_code;
1061 cmd->data.setassparms.hdr.return_code = 0;
1062 cmd->data.setassparms.hdr.seq_no = 0;
1063 }
1064
1065 return iob;
1066 }
1067
1068 #ifdef CONFIG_QETH_IPV6
qeth_l3_send_simple_setassparms_ipv6(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code)1069 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1070 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1071 {
1072 int rc;
1073 struct qeth_cmd_buffer *iob;
1074
1075 QETH_CARD_TEXT(card, 4, "simassp6");
1076 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1077 0, QETH_PROT_IPV6);
1078 if (!iob)
1079 return -ENOMEM;
1080 rc = qeth_send_setassparms(card, iob, 0, 0,
1081 qeth_l3_default_setassparms_cb, NULL);
1082 return rc;
1083 }
1084 #endif
1085
qeth_l3_start_ipa_arp_processing(struct qeth_card * card)1086 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1087 {
1088 int rc;
1089
1090 QETH_CARD_TEXT(card, 3, "ipaarp");
1091
1092 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1093 dev_info(&card->gdev->dev,
1094 "ARP processing not supported on %s!\n",
1095 QETH_CARD_IFNAME(card));
1096 return 0;
1097 }
1098 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1099 IPA_CMD_ASS_START, 0);
1100 if (rc) {
1101 dev_warn(&card->gdev->dev,
1102 "Starting ARP processing support for %s failed\n",
1103 QETH_CARD_IFNAME(card));
1104 }
1105 return rc;
1106 }
1107
qeth_l3_start_ipa_ip_fragmentation(struct qeth_card * card)1108 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1109 {
1110 int rc;
1111
1112 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1113
1114 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1115 dev_info(&card->gdev->dev,
1116 "Hardware IP fragmentation not supported on %s\n",
1117 QETH_CARD_IFNAME(card));
1118 return -EOPNOTSUPP;
1119 }
1120
1121 rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1122 IPA_CMD_ASS_START, 0);
1123 if (rc) {
1124 dev_warn(&card->gdev->dev,
1125 "Starting IP fragmentation support for %s failed\n",
1126 QETH_CARD_IFNAME(card));
1127 } else
1128 dev_info(&card->gdev->dev,
1129 "Hardware IP fragmentation enabled \n");
1130 return rc;
1131 }
1132
qeth_l3_start_ipa_source_mac(struct qeth_card * card)1133 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1134 {
1135 int rc;
1136
1137 QETH_CARD_TEXT(card, 3, "stsrcmac");
1138
1139 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1140 dev_info(&card->gdev->dev,
1141 "Inbound source MAC-address not supported on %s\n",
1142 QETH_CARD_IFNAME(card));
1143 return -EOPNOTSUPP;
1144 }
1145
1146 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
1147 IPA_CMD_ASS_START, 0);
1148 if (rc)
1149 dev_warn(&card->gdev->dev,
1150 "Starting source MAC-address support for %s failed\n",
1151 QETH_CARD_IFNAME(card));
1152 return rc;
1153 }
1154
qeth_l3_start_ipa_vlan(struct qeth_card * card)1155 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1156 {
1157 int rc = 0;
1158
1159 QETH_CARD_TEXT(card, 3, "strtvlan");
1160
1161 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1162 dev_info(&card->gdev->dev,
1163 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1164 return -EOPNOTSUPP;
1165 }
1166
1167 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1168 IPA_CMD_ASS_START, 0);
1169 if (rc) {
1170 dev_warn(&card->gdev->dev,
1171 "Starting VLAN support for %s failed\n",
1172 QETH_CARD_IFNAME(card));
1173 } else {
1174 dev_info(&card->gdev->dev, "VLAN enabled\n");
1175 }
1176 return rc;
1177 }
1178
qeth_l3_start_ipa_multicast(struct qeth_card * card)1179 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1180 {
1181 int rc;
1182
1183 QETH_CARD_TEXT(card, 3, "stmcast");
1184
1185 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1186 dev_info(&card->gdev->dev,
1187 "Multicast not supported on %s\n",
1188 QETH_CARD_IFNAME(card));
1189 return -EOPNOTSUPP;
1190 }
1191
1192 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1193 IPA_CMD_ASS_START, 0);
1194 if (rc) {
1195 dev_warn(&card->gdev->dev,
1196 "Starting multicast support for %s failed\n",
1197 QETH_CARD_IFNAME(card));
1198 } else {
1199 dev_info(&card->gdev->dev, "Multicast enabled\n");
1200 card->dev->flags |= IFF_MULTICAST;
1201 }
1202 return rc;
1203 }
1204
1205 #ifdef CONFIG_QETH_IPV6
qeth_l3_softsetup_ipv6(struct qeth_card * card)1206 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1207 {
1208 int rc;
1209
1210 QETH_CARD_TEXT(card, 3, "softipv6");
1211
1212 if (card->info.type == QETH_CARD_TYPE_IQD)
1213 goto out;
1214
1215 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1216 if (rc) {
1217 dev_err(&card->gdev->dev,
1218 "Activating IPv6 support for %s failed\n",
1219 QETH_CARD_IFNAME(card));
1220 return rc;
1221 }
1222 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1223 IPA_CMD_ASS_START, 3);
1224 if (rc) {
1225 dev_err(&card->gdev->dev,
1226 "Activating IPv6 support for %s failed\n",
1227 QETH_CARD_IFNAME(card));
1228 return rc;
1229 }
1230 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1231 IPA_CMD_ASS_START);
1232 if (rc) {
1233 dev_err(&card->gdev->dev,
1234 "Activating IPv6 support for %s failed\n",
1235 QETH_CARD_IFNAME(card));
1236 return rc;
1237 }
1238 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1239 IPA_CMD_ASS_START);
1240 if (rc) {
1241 dev_warn(&card->gdev->dev,
1242 "Enabling the passthrough mode for %s failed\n",
1243 QETH_CARD_IFNAME(card));
1244 return rc;
1245 }
1246 out:
1247 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1248 return 0;
1249 }
1250 #endif
1251
qeth_l3_start_ipa_ipv6(struct qeth_card * card)1252 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1253 {
1254 int rc = 0;
1255
1256 QETH_CARD_TEXT(card, 3, "strtipv6");
1257
1258 if (!qeth_is_supported(card, IPA_IPV6)) {
1259 dev_info(&card->gdev->dev,
1260 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1261 return 0;
1262 }
1263 #ifdef CONFIG_QETH_IPV6
1264 rc = qeth_l3_softsetup_ipv6(card);
1265 #endif
1266 return rc ;
1267 }
1268
qeth_l3_start_ipa_broadcast(struct qeth_card * card)1269 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1270 {
1271 int rc;
1272
1273 QETH_CARD_TEXT(card, 3, "stbrdcst");
1274 card->info.broadcast_capable = 0;
1275 if (!qeth_is_supported(card, IPA_FILTERING)) {
1276 dev_info(&card->gdev->dev,
1277 "Broadcast not supported on %s\n",
1278 QETH_CARD_IFNAME(card));
1279 rc = -EOPNOTSUPP;
1280 goto out;
1281 }
1282 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1283 IPA_CMD_ASS_START, 0);
1284 if (rc) {
1285 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1286 "%s failed\n", QETH_CARD_IFNAME(card));
1287 goto out;
1288 }
1289
1290 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1291 IPA_CMD_ASS_CONFIGURE, 1);
1292 if (rc) {
1293 dev_warn(&card->gdev->dev,
1294 "Setting up broadcast filtering for %s failed\n",
1295 QETH_CARD_IFNAME(card));
1296 goto out;
1297 }
1298 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1299 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1300 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1301 IPA_CMD_ASS_ENABLE, 1);
1302 if (rc) {
1303 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1304 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1305 goto out;
1306 }
1307 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1308 out:
1309 if (card->info.broadcast_capable)
1310 card->dev->flags |= IFF_BROADCAST;
1311 else
1312 card->dev->flags &= ~IFF_BROADCAST;
1313 return rc;
1314 }
1315
qeth_l3_start_ipa_checksum(struct qeth_card * card)1316 static void qeth_l3_start_ipa_checksum(struct qeth_card *card)
1317 {
1318 QETH_CARD_TEXT(card, 3, "strtcsum");
1319 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)
1320 && (card->dev->features & NETIF_F_RXCSUM))
1321 qeth_set_rx_csum(card, 1);
1322 }
1323
qeth_l3_start_ipa_tx_checksum(struct qeth_card * card)1324 static void qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1325 {
1326 QETH_CARD_TEXT(card, 3, "strttxcs");
1327 qeth_start_ipa_tx_checksum(card);
1328 }
1329
qeth_l3_start_ipa_tso(struct qeth_card * card)1330 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1331 {
1332 int rc;
1333
1334 QETH_CARD_TEXT(card, 3, "sttso");
1335
1336 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1337 dev_info(&card->gdev->dev,
1338 "Outbound TSO not supported on %s\n",
1339 QETH_CARD_IFNAME(card));
1340 rc = -EOPNOTSUPP;
1341 } else {
1342 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1343 IPA_CMD_ASS_START, 0);
1344 if (rc)
1345 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1346 "segmentation offload for %s failed\n",
1347 QETH_CARD_IFNAME(card));
1348 else
1349 dev_info(&card->gdev->dev,
1350 "Outbound TSO enabled\n");
1351 }
1352 if (rc)
1353 card->dev->features &= ~NETIF_F_TSO;
1354 return rc;
1355 }
1356
qeth_l3_start_ipassists(struct qeth_card * card)1357 static int qeth_l3_start_ipassists(struct qeth_card *card)
1358 {
1359 QETH_CARD_TEXT(card, 3, "strtipas");
1360
1361 if (qeth_set_access_ctrl_online(card, 0))
1362 return -EIO;
1363 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1364 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1365 qeth_l3_start_ipa_source_mac(card); /* go on*/
1366 qeth_l3_start_ipa_vlan(card); /* go on*/
1367 qeth_l3_start_ipa_multicast(card); /* go on*/
1368 qeth_l3_start_ipa_ipv6(card); /* go on*/
1369 qeth_l3_start_ipa_broadcast(card); /* go on*/
1370 qeth_l3_start_ipa_checksum(card); /* go on*/
1371 qeth_l3_start_ipa_tx_checksum(card);
1372 qeth_l3_start_ipa_tso(card); /* go on*/
1373 return 0;
1374 }
1375
qeth_l3_iqd_read_initial_mac_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1376 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1377 struct qeth_reply *reply, unsigned long data)
1378 {
1379 struct qeth_ipa_cmd *cmd;
1380
1381 cmd = (struct qeth_ipa_cmd *) data;
1382 if (cmd->hdr.return_code == 0)
1383 memcpy(card->dev->dev_addr,
1384 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1385 else
1386 eth_random_addr(card->dev->dev_addr);
1387
1388 return 0;
1389 }
1390
qeth_l3_iqd_read_initial_mac(struct qeth_card * card)1391 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1392 {
1393 int rc = 0;
1394 struct qeth_cmd_buffer *iob;
1395 struct qeth_ipa_cmd *cmd;
1396
1397 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1398
1399 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1400 QETH_PROT_IPV6);
1401 if (!iob)
1402 return -ENOMEM;
1403 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1404 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1405 card->info.unique_id;
1406
1407 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1408 NULL);
1409 return rc;
1410 }
1411
qeth_l3_get_unique_id_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1412 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1413 struct qeth_reply *reply, unsigned long data)
1414 {
1415 struct qeth_ipa_cmd *cmd;
1416
1417 cmd = (struct qeth_ipa_cmd *) data;
1418 if (cmd->hdr.return_code == 0)
1419 card->info.unique_id = *((__u16 *)
1420 &cmd->data.create_destroy_addr.unique_id[6]);
1421 else {
1422 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1423 UNIQUE_ID_NOT_BY_CARD;
1424 dev_warn(&card->gdev->dev, "The network adapter failed to "
1425 "generate a unique ID\n");
1426 }
1427 return 0;
1428 }
1429
qeth_l3_get_unique_id(struct qeth_card * card)1430 static int qeth_l3_get_unique_id(struct qeth_card *card)
1431 {
1432 int rc = 0;
1433 struct qeth_cmd_buffer *iob;
1434 struct qeth_ipa_cmd *cmd;
1435
1436 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1437
1438 if (!qeth_is_supported(card, IPA_IPV6)) {
1439 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1440 UNIQUE_ID_NOT_BY_CARD;
1441 return 0;
1442 }
1443
1444 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1445 QETH_PROT_IPV6);
1446 if (!iob)
1447 return -ENOMEM;
1448 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1449 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1450 card->info.unique_id;
1451
1452 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1453 return rc;
1454 }
1455
1456 static int
qeth_diags_trace_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1457 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1458 unsigned long data)
1459 {
1460 struct qeth_ipa_cmd *cmd;
1461 __u16 rc;
1462
1463 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1464
1465 cmd = (struct qeth_ipa_cmd *)data;
1466 rc = cmd->hdr.return_code;
1467 if (rc)
1468 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1469 switch (cmd->data.diagass.action) {
1470 case QETH_DIAGS_CMD_TRACE_QUERY:
1471 break;
1472 case QETH_DIAGS_CMD_TRACE_DISABLE:
1473 switch (rc) {
1474 case 0:
1475 case IPA_RC_INVALID_SUBCMD:
1476 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1477 dev_info(&card->gdev->dev, "The HiperSockets network "
1478 "traffic analyzer is deactivated\n");
1479 break;
1480 default:
1481 break;
1482 }
1483 break;
1484 case QETH_DIAGS_CMD_TRACE_ENABLE:
1485 switch (rc) {
1486 case 0:
1487 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1488 dev_info(&card->gdev->dev, "The HiperSockets network "
1489 "traffic analyzer is activated\n");
1490 break;
1491 case IPA_RC_HARDWARE_AUTH_ERROR:
1492 dev_warn(&card->gdev->dev, "The device is not "
1493 "authorized to run as a HiperSockets network "
1494 "traffic analyzer\n");
1495 break;
1496 case IPA_RC_TRACE_ALREADY_ACTIVE:
1497 dev_warn(&card->gdev->dev, "A HiperSockets "
1498 "network traffic analyzer is already "
1499 "active in the HiperSockets LAN\n");
1500 break;
1501 default:
1502 break;
1503 }
1504 break;
1505 default:
1506 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1507 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1508 }
1509
1510 return 0;
1511 }
1512
1513 static int
qeth_diags_trace(struct qeth_card * card,enum qeth_diags_trace_cmds diags_cmd)1514 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1515 {
1516 struct qeth_cmd_buffer *iob;
1517 struct qeth_ipa_cmd *cmd;
1518
1519 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1520
1521 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1522 if (!iob)
1523 return -ENOMEM;
1524 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1525 cmd->data.diagass.subcmd_len = 16;
1526 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1527 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1528 cmd->data.diagass.action = diags_cmd;
1529 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1530 }
1531
qeth_l3_get_mac_for_ipm(__u32 ipm,char * mac,struct net_device * dev)1532 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1533 struct net_device *dev)
1534 {
1535 ip_eth_mc_map(ipm, mac);
1536 }
1537
qeth_l3_add_mc(struct qeth_card * card,struct in_device * in4_dev)1538 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1539 {
1540 struct qeth_ipaddr *ipm;
1541 struct ip_mc_list *im4;
1542 char buf[MAX_ADDR_LEN];
1543
1544 QETH_CARD_TEXT(card, 4, "addmc");
1545 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1546 im4 = rcu_dereference(im4->next_rcu)) {
1547 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1548 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1549 if (!ipm)
1550 continue;
1551 ipm->u.a4.addr = im4->multiaddr;
1552 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1553 ipm->is_multicast = 1;
1554 if (!qeth_l3_add_ip(card, ipm))
1555 kfree(ipm);
1556 }
1557 }
1558
1559 /* called with rcu_read_lock */
qeth_l3_add_vlan_mc(struct qeth_card * card)1560 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1561 {
1562 struct in_device *in_dev;
1563 u16 vid;
1564
1565 QETH_CARD_TEXT(card, 4, "addmcvl");
1566 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1567 return;
1568
1569 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1570 struct net_device *netdev;
1571
1572 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1573 vid);
1574 if (netdev == NULL ||
1575 !(netdev->flags & IFF_UP))
1576 continue;
1577 in_dev = __in_dev_get_rcu(netdev);
1578 if (!in_dev)
1579 continue;
1580 qeth_l3_add_mc(card, in_dev);
1581 }
1582 }
1583
qeth_l3_add_multicast_ipv4(struct qeth_card * card)1584 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1585 {
1586 struct in_device *in4_dev;
1587
1588 QETH_CARD_TEXT(card, 4, "chkmcv4");
1589 rcu_read_lock();
1590 in4_dev = __in_dev_get_rcu(card->dev);
1591 if (in4_dev == NULL)
1592 goto unlock;
1593 qeth_l3_add_mc(card, in4_dev);
1594 qeth_l3_add_vlan_mc(card);
1595 unlock:
1596 rcu_read_unlock();
1597 }
1598
1599 #ifdef CONFIG_QETH_IPV6
qeth_l3_add_mc6(struct qeth_card * card,struct inet6_dev * in6_dev)1600 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1601 {
1602 struct qeth_ipaddr *ipm;
1603 struct ifmcaddr6 *im6;
1604 char buf[MAX_ADDR_LEN];
1605
1606 QETH_CARD_TEXT(card, 4, "addmc6");
1607 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1608 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1609 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1610 if (!ipm)
1611 continue;
1612 ipm->is_multicast = 1;
1613 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1614 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1615 sizeof(struct in6_addr));
1616 if (!qeth_l3_add_ip(card, ipm))
1617 kfree(ipm);
1618 }
1619 }
1620
1621 /* called with rcu_read_lock */
qeth_l3_add_vlan_mc6(struct qeth_card * card)1622 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1623 {
1624 struct inet6_dev *in_dev;
1625 u16 vid;
1626
1627 QETH_CARD_TEXT(card, 4, "admc6vl");
1628 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1629 return;
1630
1631 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1632 struct net_device *netdev;
1633
1634 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1635 vid);
1636 if (netdev == NULL ||
1637 !(netdev->flags & IFF_UP))
1638 continue;
1639 in_dev = in6_dev_get(netdev);
1640 if (!in_dev)
1641 continue;
1642 read_lock_bh(&in_dev->lock);
1643 qeth_l3_add_mc6(card, in_dev);
1644 read_unlock_bh(&in_dev->lock);
1645 in6_dev_put(in_dev);
1646 }
1647 }
1648
qeth_l3_add_multicast_ipv6(struct qeth_card * card)1649 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1650 {
1651 struct inet6_dev *in6_dev;
1652
1653 QETH_CARD_TEXT(card, 4, "chkmcv6");
1654 if (!qeth_is_supported(card, IPA_IPV6))
1655 return ;
1656 in6_dev = in6_dev_get(card->dev);
1657 if (in6_dev == NULL)
1658 return;
1659 rcu_read_lock();
1660 read_lock_bh(&in6_dev->lock);
1661 qeth_l3_add_mc6(card, in6_dev);
1662 qeth_l3_add_vlan_mc6(card);
1663 read_unlock_bh(&in6_dev->lock);
1664 rcu_read_unlock();
1665 in6_dev_put(in6_dev);
1666 }
1667 #endif /* CONFIG_QETH_IPV6 */
1668
qeth_l3_free_vlan_addresses4(struct qeth_card * card,unsigned short vid)1669 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1670 unsigned short vid)
1671 {
1672 struct in_device *in_dev;
1673 struct in_ifaddr *ifa;
1674 struct qeth_ipaddr *addr;
1675 struct net_device *netdev;
1676
1677 QETH_CARD_TEXT(card, 4, "frvaddr4");
1678
1679 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1680 if (!netdev)
1681 return;
1682 in_dev = in_dev_get(netdev);
1683 if (!in_dev)
1684 return;
1685 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1686 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1687 if (addr) {
1688 addr->u.a4.addr = ifa->ifa_address;
1689 addr->u.a4.mask = ifa->ifa_mask;
1690 addr->type = QETH_IP_TYPE_NORMAL;
1691 if (!qeth_l3_delete_ip(card, addr))
1692 kfree(addr);
1693 }
1694 }
1695 in_dev_put(in_dev);
1696 }
1697
qeth_l3_free_vlan_addresses6(struct qeth_card * card,unsigned short vid)1698 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1699 unsigned short vid)
1700 {
1701 #ifdef CONFIG_QETH_IPV6
1702 struct inet6_dev *in6_dev;
1703 struct inet6_ifaddr *ifa;
1704 struct qeth_ipaddr *addr;
1705 struct net_device *netdev;
1706
1707 QETH_CARD_TEXT(card, 4, "frvaddr6");
1708
1709 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1710 if (!netdev)
1711 return;
1712 in6_dev = in6_dev_get(netdev);
1713 if (!in6_dev)
1714 return;
1715 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1716 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1717 if (addr) {
1718 memcpy(&addr->u.a6.addr, &ifa->addr,
1719 sizeof(struct in6_addr));
1720 addr->u.a6.pfxlen = ifa->prefix_len;
1721 addr->type = QETH_IP_TYPE_NORMAL;
1722 if (!qeth_l3_delete_ip(card, addr))
1723 kfree(addr);
1724 }
1725 }
1726 in6_dev_put(in6_dev);
1727 #endif /* CONFIG_QETH_IPV6 */
1728 }
1729
qeth_l3_free_vlan_addresses(struct qeth_card * card,unsigned short vid)1730 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1731 unsigned short vid)
1732 {
1733 rcu_read_lock();
1734 qeth_l3_free_vlan_addresses4(card, vid);
1735 qeth_l3_free_vlan_addresses6(card, vid);
1736 rcu_read_unlock();
1737 }
1738
qeth_l3_vlan_rx_add_vid(struct net_device * dev,__be16 proto,u16 vid)1739 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1740 __be16 proto, u16 vid)
1741 {
1742 struct qeth_card *card = dev->ml_priv;
1743
1744 set_bit(vid, card->active_vlans);
1745 return 0;
1746 }
1747
qeth_l3_vlan_rx_kill_vid(struct net_device * dev,__be16 proto,u16 vid)1748 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1749 __be16 proto, u16 vid)
1750 {
1751 struct qeth_card *card = dev->ml_priv;
1752 unsigned long flags;
1753
1754 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1755 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1756 QETH_CARD_TEXT(card, 3, "kidREC");
1757 return 0;
1758 }
1759 spin_lock_irqsave(&card->vlanlock, flags);
1760 /* unregister IP addresses of vlan device */
1761 qeth_l3_free_vlan_addresses(card, vid);
1762 clear_bit(vid, card->active_vlans);
1763 spin_unlock_irqrestore(&card->vlanlock, flags);
1764 qeth_l3_set_multicast_list(card->dev);
1765 return 0;
1766 }
1767
qeth_l3_rebuild_skb(struct qeth_card * card,struct sk_buff * skb,struct qeth_hdr * hdr,unsigned short * vlan_id)1768 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1769 struct sk_buff *skb, struct qeth_hdr *hdr,
1770 unsigned short *vlan_id)
1771 {
1772 __be16 prot;
1773 struct iphdr *ip_hdr;
1774 unsigned char tg_addr[MAX_ADDR_LEN];
1775 int is_vlan = 0;
1776
1777 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1778 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1779 ETH_P_IP);
1780 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1781 case QETH_CAST_MULTICAST:
1782 switch (prot) {
1783 #ifdef CONFIG_QETH_IPV6
1784 case __constant_htons(ETH_P_IPV6):
1785 ndisc_mc_map((struct in6_addr *)
1786 skb->data + 24,
1787 tg_addr, card->dev, 0);
1788 break;
1789 #endif
1790 case __constant_htons(ETH_P_IP):
1791 ip_hdr = (struct iphdr *)skb->data;
1792 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1793 break;
1794 default:
1795 memcpy(tg_addr, card->dev->broadcast,
1796 card->dev->addr_len);
1797 }
1798 card->stats.multicast++;
1799 skb->pkt_type = PACKET_MULTICAST;
1800 break;
1801 case QETH_CAST_BROADCAST:
1802 memcpy(tg_addr, card->dev->broadcast,
1803 card->dev->addr_len);
1804 card->stats.multicast++;
1805 skb->pkt_type = PACKET_BROADCAST;
1806 break;
1807 case QETH_CAST_UNICAST:
1808 case QETH_CAST_ANYCAST:
1809 case QETH_CAST_NOCAST:
1810 default:
1811 if (card->options.sniffer)
1812 skb->pkt_type = PACKET_OTHERHOST;
1813 else
1814 skb->pkt_type = PACKET_HOST;
1815 memcpy(tg_addr, card->dev->dev_addr,
1816 card->dev->addr_len);
1817 }
1818 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1819 card->dev->header_ops->create(skb, card->dev, prot,
1820 tg_addr, &hdr->hdr.l3.dest_addr[2],
1821 card->dev->addr_len);
1822 else
1823 card->dev->header_ops->create(skb, card->dev, prot,
1824 tg_addr, "FAKELL", card->dev->addr_len);
1825 }
1826
1827 skb->protocol = eth_type_trans(skb, card->dev);
1828
1829 if (hdr->hdr.l3.ext_flags &
1830 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1831 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1832 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1833 is_vlan = 1;
1834 }
1835
1836 if (card->dev->features & NETIF_F_RXCSUM) {
1837 if ((hdr->hdr.l3.ext_flags &
1838 (QETH_HDR_EXT_CSUM_HDR_REQ |
1839 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1840 (QETH_HDR_EXT_CSUM_HDR_REQ |
1841 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1842 skb->ip_summed = CHECKSUM_UNNECESSARY;
1843 else
1844 skb->ip_summed = CHECKSUM_NONE;
1845 } else
1846 skb->ip_summed = CHECKSUM_NONE;
1847 return is_vlan;
1848 }
1849
qeth_l3_process_inbound_buffer(struct qeth_card * card,int budget,int * done)1850 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1851 int budget, int *done)
1852 {
1853 int work_done = 0;
1854 struct sk_buff *skb;
1855 struct qeth_hdr *hdr;
1856 __u16 vlan_tag = 0;
1857 int is_vlan;
1858 unsigned int len;
1859 __u16 magic;
1860
1861 *done = 0;
1862 WARN_ON_ONCE(!budget);
1863 while (budget) {
1864 skb = qeth_core_get_next_skb(card,
1865 &card->qdio.in_q->bufs[card->rx.b_index],
1866 &card->rx.b_element, &card->rx.e_offset, &hdr);
1867 if (!skb) {
1868 *done = 1;
1869 break;
1870 }
1871 skb->dev = card->dev;
1872 switch (hdr->hdr.l3.id) {
1873 case QETH_HEADER_TYPE_LAYER3:
1874 magic = *(__u16 *)skb->data;
1875 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1876 (magic == ETH_P_AF_IUCV)) {
1877 skb->protocol = ETH_P_AF_IUCV;
1878 skb->pkt_type = PACKET_HOST;
1879 skb->mac_header = NET_SKB_PAD;
1880 skb->dev = card->dev;
1881 len = skb->len;
1882 card->dev->header_ops->create(skb, card->dev, 0,
1883 card->dev->dev_addr, "FAKELL",
1884 card->dev->addr_len);
1885 netif_receive_skb(skb);
1886 } else {
1887 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1888 &vlan_tag);
1889 len = skb->len;
1890 if (is_vlan && !card->options.sniffer)
1891 __vlan_hwaccel_put_tag(skb,
1892 htons(ETH_P_8021Q), vlan_tag);
1893 napi_gro_receive(&card->napi, skb);
1894 }
1895 break;
1896 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1897 skb->pkt_type = PACKET_HOST;
1898 skb->protocol = eth_type_trans(skb, skb->dev);
1899 len = skb->len;
1900 netif_receive_skb(skb);
1901 break;
1902 default:
1903 dev_kfree_skb_any(skb);
1904 QETH_CARD_TEXT(card, 3, "inbunkno");
1905 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1906 continue;
1907 }
1908 work_done++;
1909 budget--;
1910 card->stats.rx_packets++;
1911 card->stats.rx_bytes += len;
1912 }
1913 return work_done;
1914 }
1915
qeth_l3_poll(struct napi_struct * napi,int budget)1916 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1917 {
1918 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1919 int work_done = 0;
1920 struct qeth_qdio_buffer *buffer;
1921 int done;
1922 int new_budget = budget;
1923
1924 if (card->options.performance_stats) {
1925 card->perf_stats.inbound_cnt++;
1926 card->perf_stats.inbound_start_time = qeth_get_micros();
1927 }
1928
1929 while (1) {
1930 if (!card->rx.b_count) {
1931 card->rx.qdio_err = 0;
1932 card->rx.b_count = qdio_get_next_buffers(
1933 card->data.ccwdev, 0, &card->rx.b_index,
1934 &card->rx.qdio_err);
1935 if (card->rx.b_count <= 0) {
1936 card->rx.b_count = 0;
1937 break;
1938 }
1939 card->rx.b_element =
1940 &card->qdio.in_q->bufs[card->rx.b_index]
1941 .buffer->element[0];
1942 card->rx.e_offset = 0;
1943 }
1944
1945 while (card->rx.b_count) {
1946 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1947 if (!(card->rx.qdio_err &&
1948 qeth_check_qdio_errors(card, buffer->buffer,
1949 card->rx.qdio_err, "qinerr")))
1950 work_done += qeth_l3_process_inbound_buffer(
1951 card, new_budget, &done);
1952 else
1953 done = 1;
1954
1955 if (done) {
1956 if (card->options.performance_stats)
1957 card->perf_stats.bufs_rec++;
1958 qeth_put_buffer_pool_entry(card,
1959 buffer->pool_entry);
1960 qeth_queue_input_buffer(card, card->rx.b_index);
1961 card->rx.b_count--;
1962 if (card->rx.b_count) {
1963 card->rx.b_index =
1964 (card->rx.b_index + 1) %
1965 QDIO_MAX_BUFFERS_PER_Q;
1966 card->rx.b_element =
1967 &card->qdio.in_q
1968 ->bufs[card->rx.b_index]
1969 .buffer->element[0];
1970 card->rx.e_offset = 0;
1971 }
1972 }
1973
1974 if (work_done >= budget)
1975 goto out;
1976 else
1977 new_budget = budget - work_done;
1978 }
1979 }
1980
1981 napi_complete(napi);
1982 if (qdio_start_irq(card->data.ccwdev, 0))
1983 napi_schedule(&card->napi);
1984 out:
1985 if (card->options.performance_stats)
1986 card->perf_stats.inbound_time += qeth_get_micros() -
1987 card->perf_stats.inbound_start_time;
1988 return work_done;
1989 }
1990
qeth_l3_verify_vlan_dev(struct net_device * dev,struct qeth_card * card)1991 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1992 struct qeth_card *card)
1993 {
1994 int rc = 0;
1995 u16 vid;
1996
1997 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1998 struct net_device *netdev;
1999
2000 rcu_read_lock();
2001 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
2002 vid);
2003 rcu_read_unlock();
2004 if (netdev == dev) {
2005 rc = QETH_VLAN_CARD;
2006 break;
2007 }
2008 }
2009
2010 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2011 return 0;
2012
2013 return rc;
2014 }
2015
qeth_l3_verify_dev(struct net_device * dev)2016 static int qeth_l3_verify_dev(struct net_device *dev)
2017 {
2018 struct qeth_card *card;
2019 unsigned long flags;
2020 int rc = 0;
2021
2022 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2023 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2024 if (card->dev == dev) {
2025 rc = QETH_REAL_CARD;
2026 break;
2027 }
2028 rc = qeth_l3_verify_vlan_dev(dev, card);
2029 if (rc)
2030 break;
2031 }
2032 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2033
2034 return rc;
2035 }
2036
qeth_l3_get_card_from_dev(struct net_device * dev)2037 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2038 {
2039 struct qeth_card *card = NULL;
2040 int rc;
2041
2042 rc = qeth_l3_verify_dev(dev);
2043 if (rc == QETH_REAL_CARD)
2044 card = dev->ml_priv;
2045 else if (rc == QETH_VLAN_CARD)
2046 card = vlan_dev_real_dev(dev)->ml_priv;
2047 if (card && card->options.layer2)
2048 card = NULL;
2049 if (card)
2050 QETH_CARD_TEXT_(card, 4, "%d", rc);
2051 return card ;
2052 }
2053
qeth_l3_stop_card(struct qeth_card * card,int recovery_mode)2054 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2055 {
2056 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2057 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2058
2059 qeth_set_allowed_threads(card, 0, 1);
2060 if (card->options.sniffer &&
2061 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2062 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2063 if (card->read.state == CH_STATE_UP &&
2064 card->write.state == CH_STATE_UP &&
2065 (card->state == CARD_STATE_UP)) {
2066 if (recovery_mode)
2067 qeth_l3_stop(card->dev);
2068 else {
2069 rtnl_lock();
2070 dev_close(card->dev);
2071 rtnl_unlock();
2072 }
2073 card->state = CARD_STATE_SOFTSETUP;
2074 }
2075 if (card->state == CARD_STATE_SOFTSETUP) {
2076 qeth_l3_clear_ip_list(card, 1);
2077 qeth_clear_ipacmd_list(card);
2078 card->state = CARD_STATE_HARDSETUP;
2079 }
2080 if (card->state == CARD_STATE_HARDSETUP) {
2081 qeth_qdio_clear_card(card, 0);
2082 qeth_clear_qdio_buffers(card);
2083 qeth_clear_working_pool_list(card);
2084 card->state = CARD_STATE_DOWN;
2085 }
2086 if (card->state == CARD_STATE_DOWN) {
2087 qeth_clear_cmd_buffers(&card->read);
2088 qeth_clear_cmd_buffers(&card->write);
2089 }
2090 }
2091
2092 /*
2093 * test for and Switch promiscuous mode (on or off)
2094 * either for guestlan or HiperSocket Sniffer
2095 */
2096 static void
qeth_l3_handle_promisc_mode(struct qeth_card * card)2097 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2098 {
2099 struct net_device *dev = card->dev;
2100
2101 if (((dev->flags & IFF_PROMISC) &&
2102 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2103 (!(dev->flags & IFF_PROMISC) &&
2104 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2105 return;
2106
2107 if (card->info.guestlan) { /* Guestlan trace */
2108 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2109 qeth_setadp_promisc_mode(card);
2110 } else if (card->options.sniffer && /* HiperSockets trace */
2111 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2112 if (dev->flags & IFF_PROMISC) {
2113 QETH_CARD_TEXT(card, 3, "+promisc");
2114 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2115 } else {
2116 QETH_CARD_TEXT(card, 3, "-promisc");
2117 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2118 }
2119 }
2120 }
2121
qeth_l3_set_multicast_list(struct net_device * dev)2122 static void qeth_l3_set_multicast_list(struct net_device *dev)
2123 {
2124 struct qeth_card *card = dev->ml_priv;
2125
2126 QETH_CARD_TEXT(card, 3, "setmulti");
2127 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2128 (card->state != CARD_STATE_UP))
2129 return;
2130 if (!card->options.sniffer) {
2131 qeth_l3_delete_mc_addresses(card);
2132 qeth_l3_add_multicast_ipv4(card);
2133 #ifdef CONFIG_QETH_IPV6
2134 qeth_l3_add_multicast_ipv6(card);
2135 #endif
2136 qeth_l3_set_ip_addr_list(card);
2137 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2138 return;
2139 }
2140 qeth_l3_handle_promisc_mode(card);
2141 }
2142
qeth_l3_arp_get_error_cause(int * rc)2143 static const char *qeth_l3_arp_get_error_cause(int *rc)
2144 {
2145 switch (*rc) {
2146 case QETH_IPA_ARP_RC_FAILED:
2147 *rc = -EIO;
2148 return "operation failed";
2149 case QETH_IPA_ARP_RC_NOTSUPP:
2150 *rc = -EOPNOTSUPP;
2151 return "operation not supported";
2152 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2153 *rc = -EINVAL;
2154 return "argument out of range";
2155 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2156 *rc = -EOPNOTSUPP;
2157 return "query operation not supported";
2158 case QETH_IPA_ARP_RC_Q_NO_DATA:
2159 *rc = -ENOENT;
2160 return "no query data available";
2161 default:
2162 return "unknown error";
2163 }
2164 }
2165
qeth_l3_arp_set_no_entries(struct qeth_card * card,int no_entries)2166 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2167 {
2168 int tmp;
2169 int rc;
2170
2171 QETH_CARD_TEXT(card, 3, "arpstnoe");
2172
2173 /*
2174 * currently GuestLAN only supports the ARP assist function
2175 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2176 * thus we say EOPNOTSUPP for this ARP function
2177 */
2178 if (card->info.guestlan)
2179 return -EOPNOTSUPP;
2180 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2181 return -EOPNOTSUPP;
2182 }
2183 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2184 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2185 no_entries);
2186 if (rc) {
2187 tmp = rc;
2188 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2189 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2190 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2191 }
2192 return rc;
2193 }
2194
get_arp_entry_size(struct qeth_card * card,struct qeth_arp_query_data * qdata,struct qeth_arp_entrytype * type,__u8 strip_entries)2195 static __u32 get_arp_entry_size(struct qeth_card *card,
2196 struct qeth_arp_query_data *qdata,
2197 struct qeth_arp_entrytype *type, __u8 strip_entries)
2198 {
2199 __u32 rc;
2200 __u8 is_hsi;
2201
2202 is_hsi = qdata->reply_bits == 5;
2203 if (type->ip == QETHARP_IP_ADDR_V4) {
2204 QETH_CARD_TEXT(card, 4, "arpev4");
2205 if (strip_entries) {
2206 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2207 sizeof(struct qeth_arp_qi_entry7_short);
2208 } else {
2209 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2210 sizeof(struct qeth_arp_qi_entry7);
2211 }
2212 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2213 QETH_CARD_TEXT(card, 4, "arpev6");
2214 if (strip_entries) {
2215 rc = is_hsi ?
2216 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2217 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2218 } else {
2219 rc = is_hsi ?
2220 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2221 sizeof(struct qeth_arp_qi_entry7_ipv6);
2222 }
2223 } else {
2224 QETH_CARD_TEXT(card, 4, "arpinv");
2225 rc = 0;
2226 }
2227
2228 return rc;
2229 }
2230
arpentry_matches_prot(struct qeth_arp_entrytype * type,__u16 prot)2231 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2232 {
2233 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2234 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2235 }
2236
qeth_l3_arp_query_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2237 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2238 struct qeth_reply *reply, unsigned long data)
2239 {
2240 struct qeth_ipa_cmd *cmd;
2241 struct qeth_arp_query_data *qdata;
2242 struct qeth_arp_query_info *qinfo;
2243 int i;
2244 int e;
2245 int entrybytes_done;
2246 int stripped_bytes;
2247 __u8 do_strip_entries;
2248
2249 QETH_CARD_TEXT(card, 3, "arpquecb");
2250
2251 qinfo = (struct qeth_arp_query_info *) reply->param;
2252 cmd = (struct qeth_ipa_cmd *) data;
2253 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2254 if (cmd->hdr.return_code) {
2255 QETH_CARD_TEXT(card, 4, "arpcberr");
2256 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2257 return 0;
2258 }
2259 if (cmd->data.setassparms.hdr.return_code) {
2260 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2261 QETH_CARD_TEXT(card, 4, "setaperr");
2262 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2263 return 0;
2264 }
2265 qdata = &cmd->data.setassparms.data.query_arp;
2266 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2267
2268 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2269 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2270 entrybytes_done = 0;
2271 for (e = 0; e < qdata->no_entries; ++e) {
2272 char *cur_entry;
2273 __u32 esize;
2274 struct qeth_arp_entrytype *etype;
2275
2276 cur_entry = &qdata->data + entrybytes_done;
2277 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2278 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2279 QETH_CARD_TEXT(card, 4, "pmis");
2280 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2281 break;
2282 }
2283 esize = get_arp_entry_size(card, qdata, etype,
2284 do_strip_entries);
2285 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2286 if (!esize)
2287 break;
2288
2289 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2290 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2291 cmd->hdr.return_code = IPA_RC_ENOMEM;
2292 goto out_error;
2293 }
2294
2295 memcpy(qinfo->udata + qinfo->udata_offset,
2296 &qdata->data + entrybytes_done + stripped_bytes,
2297 esize);
2298 entrybytes_done += esize + stripped_bytes;
2299 qinfo->udata_offset += esize;
2300 ++qinfo->no_entries;
2301 }
2302 /* check if all replies received ... */
2303 if (cmd->data.setassparms.hdr.seq_no <
2304 cmd->data.setassparms.hdr.number_of_replies)
2305 return 1;
2306 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2307 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2308 /* keep STRIP_ENTRIES flag so the user program can distinguish
2309 * stripped entries from normal ones */
2310 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2311 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2312 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2313 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2314 return 0;
2315 out_error:
2316 i = 0;
2317 memcpy(qinfo->udata, &i, 4);
2318 return 0;
2319 }
2320
qeth_l3_send_ipa_arp_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,int len,int (* reply_cb)(struct qeth_card *,struct qeth_reply *,unsigned long),void * reply_param)2321 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2322 struct qeth_cmd_buffer *iob, int len,
2323 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2324 unsigned long),
2325 void *reply_param)
2326 {
2327 QETH_CARD_TEXT(card, 4, "sendarp");
2328
2329 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2330 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2331 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2332 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2333 reply_cb, reply_param);
2334 }
2335
qeth_l3_query_arp_cache_info(struct qeth_card * card,enum qeth_prot_versions prot,struct qeth_arp_query_info * qinfo)2336 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2337 enum qeth_prot_versions prot,
2338 struct qeth_arp_query_info *qinfo)
2339 {
2340 struct qeth_cmd_buffer *iob;
2341 struct qeth_ipa_cmd *cmd;
2342 int tmp;
2343 int rc;
2344
2345 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2346
2347 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2348 IPA_CMD_ASS_ARP_QUERY_INFO,
2349 sizeof(struct qeth_arp_query_data) - sizeof(char),
2350 prot);
2351 if (!iob)
2352 return -ENOMEM;
2353 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2354 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2355 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2356 cmd->data.setassparms.data.query_arp.no_entries = 0;
2357 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2358 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2359 qeth_l3_arp_query_cb, (void *)qinfo);
2360 if (rc) {
2361 tmp = rc;
2362 QETH_DBF_MESSAGE(2,
2363 "Error while querying ARP cache on %s: %s "
2364 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2365 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2366 }
2367
2368 return rc;
2369 }
2370
qeth_l3_arp_query(struct qeth_card * card,char __user * udata)2371 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2372 {
2373 struct qeth_arp_query_info qinfo = {0, };
2374 int rc;
2375
2376 QETH_CARD_TEXT(card, 3, "arpquery");
2377
2378 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2379 IPA_ARP_PROCESSING)) {
2380 QETH_CARD_TEXT(card, 3, "arpqnsup");
2381 rc = -EOPNOTSUPP;
2382 goto out;
2383 }
2384 /* get size of userspace buffer and mask_bits -> 6 bytes */
2385 if (copy_from_user(&qinfo, udata, 6)) {
2386 rc = -EFAULT;
2387 goto out;
2388 }
2389 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2390 if (!qinfo.udata) {
2391 rc = -ENOMEM;
2392 goto out;
2393 }
2394 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2395 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2396 if (rc) {
2397 if (copy_to_user(udata, qinfo.udata, 4))
2398 rc = -EFAULT;
2399 goto free_and_out;
2400 } else {
2401 #ifdef CONFIG_QETH_IPV6
2402 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2403 /* fails in case of GuestLAN QDIO mode */
2404 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2405 &qinfo);
2406 }
2407 #endif
2408 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2409 QETH_CARD_TEXT(card, 4, "qactf");
2410 rc = -EFAULT;
2411 goto free_and_out;
2412 }
2413 QETH_CARD_TEXT(card, 4, "qacts");
2414 }
2415 free_and_out:
2416 kfree(qinfo.udata);
2417 out:
2418 return rc;
2419 }
2420
qeth_l3_arp_add_entry(struct qeth_card * card,struct qeth_arp_cache_entry * entry)2421 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2422 struct qeth_arp_cache_entry *entry)
2423 {
2424 struct qeth_cmd_buffer *iob;
2425 char buf[16];
2426 int tmp;
2427 int rc;
2428
2429 QETH_CARD_TEXT(card, 3, "arpadent");
2430
2431 /*
2432 * currently GuestLAN only supports the ARP assist function
2433 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2434 * thus we say EOPNOTSUPP for this ARP function
2435 */
2436 if (card->info.guestlan)
2437 return -EOPNOTSUPP;
2438 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2439 return -EOPNOTSUPP;
2440 }
2441
2442 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2443 IPA_CMD_ASS_ARP_ADD_ENTRY,
2444 sizeof(struct qeth_arp_cache_entry),
2445 QETH_PROT_IPV4);
2446 if (!iob)
2447 return -ENOMEM;
2448 rc = qeth_send_setassparms(card, iob,
2449 sizeof(struct qeth_arp_cache_entry),
2450 (unsigned long) entry,
2451 qeth_l3_default_setassparms_cb, NULL);
2452 if (rc) {
2453 tmp = rc;
2454 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2455 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2456 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2457 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2458 }
2459 return rc;
2460 }
2461
qeth_l3_arp_remove_entry(struct qeth_card * card,struct qeth_arp_cache_entry * entry)2462 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2463 struct qeth_arp_cache_entry *entry)
2464 {
2465 struct qeth_cmd_buffer *iob;
2466 char buf[16] = {0, };
2467 int tmp;
2468 int rc;
2469
2470 QETH_CARD_TEXT(card, 3, "arprment");
2471
2472 /*
2473 * currently GuestLAN only supports the ARP assist function
2474 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2475 * thus we say EOPNOTSUPP for this ARP function
2476 */
2477 if (card->info.guestlan)
2478 return -EOPNOTSUPP;
2479 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2480 return -EOPNOTSUPP;
2481 }
2482 memcpy(buf, entry, 12);
2483 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2484 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2485 12,
2486 QETH_PROT_IPV4);
2487 if (!iob)
2488 return -ENOMEM;
2489 rc = qeth_send_setassparms(card, iob,
2490 12, (unsigned long)buf,
2491 qeth_l3_default_setassparms_cb, NULL);
2492 if (rc) {
2493 tmp = rc;
2494 memset(buf, 0, 16);
2495 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2496 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2497 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2498 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2499 }
2500 return rc;
2501 }
2502
qeth_l3_arp_flush_cache(struct qeth_card * card)2503 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2504 {
2505 int rc;
2506 int tmp;
2507
2508 QETH_CARD_TEXT(card, 3, "arpflush");
2509
2510 /*
2511 * currently GuestLAN only supports the ARP assist function
2512 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2513 * thus we say EOPNOTSUPP for this ARP function
2514 */
2515 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2516 return -EOPNOTSUPP;
2517 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2518 return -EOPNOTSUPP;
2519 }
2520 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2521 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2522 if (rc) {
2523 tmp = rc;
2524 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2525 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2526 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2527 }
2528 return rc;
2529 }
2530
qeth_l3_do_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)2531 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2532 {
2533 struct qeth_card *card = dev->ml_priv;
2534 struct qeth_arp_cache_entry arp_entry;
2535 struct mii_ioctl_data *mii_data;
2536 int rc = 0;
2537
2538 if (!card)
2539 return -ENODEV;
2540
2541 if (!qeth_card_hw_is_reachable(card))
2542 return -ENODEV;
2543
2544 switch (cmd) {
2545 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2546 if (!capable(CAP_NET_ADMIN)) {
2547 rc = -EPERM;
2548 break;
2549 }
2550 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2551 break;
2552 case SIOC_QETH_ARP_QUERY_INFO:
2553 if (!capable(CAP_NET_ADMIN)) {
2554 rc = -EPERM;
2555 break;
2556 }
2557 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2558 break;
2559 case SIOC_QETH_ARP_ADD_ENTRY:
2560 if (!capable(CAP_NET_ADMIN)) {
2561 rc = -EPERM;
2562 break;
2563 }
2564 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2565 sizeof(struct qeth_arp_cache_entry)))
2566 rc = -EFAULT;
2567 else
2568 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2569 break;
2570 case SIOC_QETH_ARP_REMOVE_ENTRY:
2571 if (!capable(CAP_NET_ADMIN)) {
2572 rc = -EPERM;
2573 break;
2574 }
2575 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2576 sizeof(struct qeth_arp_cache_entry)))
2577 rc = -EFAULT;
2578 else
2579 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2580 break;
2581 case SIOC_QETH_ARP_FLUSH_CACHE:
2582 if (!capable(CAP_NET_ADMIN)) {
2583 rc = -EPERM;
2584 break;
2585 }
2586 rc = qeth_l3_arp_flush_cache(card);
2587 break;
2588 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2589 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2590 break;
2591 case SIOC_QETH_GET_CARD_TYPE:
2592 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2593 card->info.type == QETH_CARD_TYPE_OSX) &&
2594 !card->info.guestlan)
2595 return 1;
2596 return 0;
2597 break;
2598 case SIOCGMIIPHY:
2599 mii_data = if_mii(rq);
2600 mii_data->phy_id = 0;
2601 break;
2602 case SIOCGMIIREG:
2603 mii_data = if_mii(rq);
2604 if (mii_data->phy_id != 0)
2605 rc = -EINVAL;
2606 else
2607 mii_data->val_out = qeth_mdio_read(dev,
2608 mii_data->phy_id,
2609 mii_data->reg_num);
2610 break;
2611 case SIOC_QETH_QUERY_OAT:
2612 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2613 break;
2614 default:
2615 rc = -EOPNOTSUPP;
2616 }
2617 if (rc)
2618 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2619 return rc;
2620 }
2621
qeth_l3_get_cast_type(struct qeth_card * card,struct sk_buff * skb)2622 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2623 {
2624 int cast_type = RTN_UNSPEC;
2625 struct neighbour *n = NULL;
2626 struct dst_entry *dst;
2627
2628 rcu_read_lock();
2629 dst = skb_dst(skb);
2630 if (dst)
2631 n = dst_neigh_lookup_skb(dst, skb);
2632 if (n) {
2633 cast_type = n->type;
2634 rcu_read_unlock();
2635 neigh_release(n);
2636 if ((cast_type == RTN_BROADCAST) ||
2637 (cast_type == RTN_MULTICAST) ||
2638 (cast_type == RTN_ANYCAST))
2639 return cast_type;
2640 else
2641 return RTN_UNSPEC;
2642 }
2643 rcu_read_unlock();
2644
2645 /* try something else */
2646 if (skb->protocol == ETH_P_IPV6)
2647 return (skb_network_header(skb)[24] == 0xff) ?
2648 RTN_MULTICAST : 0;
2649 else if (skb->protocol == ETH_P_IP)
2650 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2651 RTN_MULTICAST : 0;
2652 /* ... */
2653 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2654 return RTN_BROADCAST;
2655 else {
2656 u16 hdr_mac;
2657
2658 hdr_mac = *((u16 *)skb->data);
2659 /* tr multicast? */
2660 switch (card->info.link_type) {
2661 case QETH_LINK_TYPE_HSTR:
2662 case QETH_LINK_TYPE_LANE_TR:
2663 if ((hdr_mac == QETH_TR_MAC_NC) ||
2664 (hdr_mac == QETH_TR_MAC_C))
2665 return RTN_MULTICAST;
2666 break;
2667 /* eth or so multicast? */
2668 default:
2669 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2670 (hdr_mac == QETH_ETH_MAC_V6))
2671 return RTN_MULTICAST;
2672 }
2673 }
2674 return cast_type;
2675 }
2676
qeth_l3_fill_af_iucv_hdr(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb)2677 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2678 struct qeth_hdr *hdr, struct sk_buff *skb)
2679 {
2680 char daddr[16];
2681 struct af_iucv_trans_hdr *iucv_hdr;
2682
2683 memset(hdr, 0, sizeof(struct qeth_hdr));
2684 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2685 hdr->hdr.l3.ext_flags = 0;
2686 hdr->hdr.l3.length = skb->len - ETH_HLEN;
2687 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2688
2689 iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2690 memset(daddr, 0, sizeof(daddr));
2691 daddr[0] = 0xfe;
2692 daddr[1] = 0x80;
2693 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2694 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2695 }
2696
qeth_l3_fill_header(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb,int ipv,int cast_type)2697 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2698 struct sk_buff *skb, int ipv, int cast_type)
2699 {
2700 struct dst_entry *dst;
2701
2702 memset(hdr, 0, sizeof(struct qeth_hdr));
2703 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2704 hdr->hdr.l3.ext_flags = 0;
2705
2706 /*
2707 * before we're going to overwrite this location with next hop ip.
2708 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2709 */
2710 if (skb_vlan_tag_present(skb)) {
2711 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2712 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2713 else
2714 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2715 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2716 }
2717
2718 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2719
2720 rcu_read_lock();
2721 dst = skb_dst(skb);
2722 if (ipv == 4) {
2723 struct rtable *rt = (struct rtable *) dst;
2724 __be32 *pkey = &ip_hdr(skb)->daddr;
2725
2726 if (rt->rt_gateway)
2727 pkey = &rt->rt_gateway;
2728
2729 /* IPv4 */
2730 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2731 memset(hdr->hdr.l3.dest_addr, 0, 12);
2732 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2733 } else if (ipv == 6) {
2734 struct rt6_info *rt = (struct rt6_info *) dst;
2735 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2736
2737 if (!ipv6_addr_any(&rt->rt6i_gateway))
2738 pkey = &rt->rt6i_gateway;
2739
2740 /* IPv6 */
2741 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2742 if (card->info.type == QETH_CARD_TYPE_IQD)
2743 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2744 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2745 } else {
2746 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2747 skb->dev->broadcast, 6)) {
2748 /* broadcast? */
2749 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2750 QETH_HDR_PASSTHRU;
2751 } else {
2752 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2753 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2754 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2755 }
2756 }
2757 rcu_read_unlock();
2758 }
2759
qeth_l3_hdr_csum(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb)2760 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2761 struct qeth_hdr *hdr, struct sk_buff *skb)
2762 {
2763 struct iphdr *iph = ip_hdr(skb);
2764
2765 /* tcph->check contains already the pseudo hdr checksum
2766 * so just set the header flags
2767 */
2768 if (iph->protocol == IPPROTO_UDP)
2769 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2770 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2771 QETH_HDR_EXT_CSUM_HDR_REQ;
2772 iph->check = 0;
2773 if (card->options.performance_stats)
2774 card->perf_stats.tx_csum++;
2775 }
2776
qeth_tso_fill_header(struct qeth_card * card,struct qeth_hdr * qhdr,struct sk_buff * skb)2777 static void qeth_tso_fill_header(struct qeth_card *card,
2778 struct qeth_hdr *qhdr, struct sk_buff *skb)
2779 {
2780 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2781 struct tcphdr *tcph = tcp_hdr(skb);
2782 struct iphdr *iph = ip_hdr(skb);
2783 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2784
2785 /*fix header to TSO values ...*/
2786 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2787 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2788 /*set values which are fix for the first approach ...*/
2789 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2790 hdr->ext.imb_hdr_no = 1;
2791 hdr->ext.hdr_type = 1;
2792 hdr->ext.hdr_version = 1;
2793 hdr->ext.hdr_len = 28;
2794 /*insert non-fix values */
2795 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2796 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2797 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2798 sizeof(struct qeth_hdr_tso));
2799 tcph->check = 0;
2800 if (skb->protocol == ETH_P_IPV6) {
2801 ip6h->payload_len = 0;
2802 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2803 0, IPPROTO_TCP, 0);
2804 } else {
2805 /*OSA want us to set these values ...*/
2806 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2807 0, IPPROTO_TCP, 0);
2808 iph->tot_len = 0;
2809 iph->check = 0;
2810 }
2811 }
2812
qeth_l3_tso_elements(struct sk_buff * skb)2813 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2814 {
2815 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2816 tcp_hdr(skb)->doff * 4;
2817 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2818 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2819
2820 elements += qeth_get_elements_for_frags(skb);
2821
2822 return elements;
2823 }
2824
qeth_l3_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)2825 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2826 {
2827 int rc;
2828 u16 *tag;
2829 struct qeth_hdr *hdr = NULL;
2830 int elements_needed = 0;
2831 int elems;
2832 struct qeth_card *card = dev->ml_priv;
2833 struct sk_buff *new_skb = NULL;
2834 int ipv = qeth_get_ip_version(skb);
2835 int cast_type = qeth_l3_get_cast_type(card, skb);
2836 struct qeth_qdio_out_q *queue =
2837 card->qdio.out_qs[card->qdio.do_prio_queueing
2838 || (cast_type && card->info.is_multicast_different) ?
2839 qeth_get_priority_queue(card, skb, ipv, cast_type) :
2840 card->qdio.default_out_queue];
2841 int tx_bytes = skb->len;
2842 bool large_send;
2843 int data_offset = -1;
2844 int nr_frags;
2845
2846 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2847 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2848 ((card->options.cq == QETH_CQ_ENABLED) &&
2849 (skb->protocol != ETH_P_AF_IUCV)))) ||
2850 card->options.sniffer)
2851 goto tx_drop;
2852
2853 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2854 card->stats.tx_carrier_errors++;
2855 goto tx_drop;
2856 }
2857
2858 if ((cast_type == RTN_BROADCAST) &&
2859 (card->info.broadcast_capable == 0))
2860 goto tx_drop;
2861
2862 if (card->options.performance_stats) {
2863 card->perf_stats.outbound_cnt++;
2864 card->perf_stats.outbound_start_time = qeth_get_micros();
2865 }
2866
2867 large_send = skb_is_gso(skb);
2868
2869 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2870 (skb_shinfo(skb)->nr_frags == 0)) {
2871 new_skb = skb;
2872 data_offset = ETH_HLEN;
2873 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2874 if (!hdr)
2875 goto tx_drop;
2876 elements_needed++;
2877 } else {
2878 /* create a clone with writeable headroom */
2879 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2880 + VLAN_HLEN);
2881 if (!new_skb)
2882 goto tx_drop;
2883 }
2884
2885 if (card->info.type == QETH_CARD_TYPE_IQD) {
2886 if (data_offset < 0)
2887 skb_pull(new_skb, ETH_HLEN);
2888 } else {
2889 if (ipv == 4) {
2890 skb_pull(new_skb, ETH_HLEN);
2891 }
2892
2893 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2894 skb_push(new_skb, VLAN_HLEN);
2895 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2896 skb_copy_to_linear_data_offset(new_skb, 4,
2897 new_skb->data + 8, 4);
2898 skb_copy_to_linear_data_offset(new_skb, 8,
2899 new_skb->data + 12, 4);
2900 tag = (u16 *)(new_skb->data + 12);
2901 *tag = __constant_htons(ETH_P_8021Q);
2902 *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
2903 }
2904 }
2905
2906 netif_stop_queue(dev);
2907
2908 /* fix hardware limitation: as long as we do not have sbal
2909 * chaining we can not send long frag lists
2910 */
2911 if (large_send) {
2912 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2913 if (skb_linearize(new_skb))
2914 goto tx_drop;
2915 if (card->options.performance_stats)
2916 card->perf_stats.tx_lin++;
2917 }
2918 }
2919
2920 if (large_send && (cast_type == RTN_UNSPEC)) {
2921 hdr = (struct qeth_hdr *)skb_push(new_skb,
2922 sizeof(struct qeth_hdr_tso));
2923 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2924 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2925 qeth_tso_fill_header(card, hdr, new_skb);
2926 elements_needed++;
2927 } else {
2928 if (data_offset < 0) {
2929 hdr = (struct qeth_hdr *)skb_push(new_skb,
2930 sizeof(struct qeth_hdr));
2931 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2932 cast_type);
2933 } else {
2934 if (new_skb->protocol == ETH_P_AF_IUCV)
2935 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2936 else {
2937 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2938 cast_type);
2939 hdr->hdr.l3.length = new_skb->len - data_offset;
2940 }
2941 }
2942
2943 if (skb->ip_summed == CHECKSUM_PARTIAL)
2944 qeth_l3_hdr_csum(card, hdr, new_skb);
2945 }
2946
2947 elems = qeth_get_elements_no(card, new_skb, elements_needed);
2948 if (!elems) {
2949 if (data_offset >= 0)
2950 kmem_cache_free(qeth_core_header_cache, hdr);
2951 goto tx_drop;
2952 }
2953 elements_needed += elems;
2954 nr_frags = skb_shinfo(new_skb)->nr_frags;
2955
2956 if (card->info.type != QETH_CARD_TYPE_IQD) {
2957 int len;
2958 if (large_send)
2959 len = ((unsigned long)tcp_hdr(new_skb) +
2960 tcp_hdr(new_skb)->doff * 4) -
2961 (unsigned long)new_skb->data;
2962 else
2963 len = sizeof(struct qeth_hdr_layer3);
2964
2965 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2966 goto tx_drop;
2967 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2968 elements_needed);
2969 } else
2970 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2971 elements_needed, data_offset, 0);
2972
2973 if (!rc) {
2974 card->stats.tx_packets++;
2975 card->stats.tx_bytes += tx_bytes;
2976 if (new_skb != skb)
2977 dev_kfree_skb_any(skb);
2978 if (card->options.performance_stats) {
2979 if (large_send) {
2980 card->perf_stats.large_send_bytes += tx_bytes;
2981 card->perf_stats.large_send_cnt++;
2982 }
2983 if (nr_frags) {
2984 card->perf_stats.sg_skbs_sent++;
2985 /* nr_frags + skb->data */
2986 card->perf_stats.sg_frags_sent += nr_frags + 1;
2987 }
2988 }
2989 rc = NETDEV_TX_OK;
2990 } else {
2991 if (data_offset >= 0)
2992 kmem_cache_free(qeth_core_header_cache, hdr);
2993
2994 if (rc == -EBUSY) {
2995 if (new_skb != skb)
2996 dev_kfree_skb_any(new_skb);
2997 return NETDEV_TX_BUSY;
2998 } else
2999 goto tx_drop;
3000 }
3001
3002 netif_wake_queue(dev);
3003 if (card->options.performance_stats)
3004 card->perf_stats.outbound_time += qeth_get_micros() -
3005 card->perf_stats.outbound_start_time;
3006 return rc;
3007
3008 tx_drop:
3009 card->stats.tx_dropped++;
3010 card->stats.tx_errors++;
3011 if ((new_skb != skb) && new_skb)
3012 dev_kfree_skb_any(new_skb);
3013 dev_kfree_skb_any(skb);
3014 netif_wake_queue(dev);
3015 return NETDEV_TX_OK;
3016 }
3017
__qeth_l3_open(struct net_device * dev)3018 static int __qeth_l3_open(struct net_device *dev)
3019 {
3020 struct qeth_card *card = dev->ml_priv;
3021 int rc = 0;
3022
3023 QETH_CARD_TEXT(card, 4, "qethopen");
3024 if (card->state == CARD_STATE_UP)
3025 return rc;
3026 if (card->state != CARD_STATE_SOFTSETUP)
3027 return -ENODEV;
3028 card->data.state = CH_STATE_UP;
3029 card->state = CARD_STATE_UP;
3030 netif_start_queue(dev);
3031
3032 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3033 napi_enable(&card->napi);
3034 local_bh_disable();
3035 napi_schedule(&card->napi);
3036 /* kick-start the NAPI softirq: */
3037 local_bh_enable();
3038 } else
3039 rc = -EIO;
3040 return rc;
3041 }
3042
qeth_l3_open(struct net_device * dev)3043 static int qeth_l3_open(struct net_device *dev)
3044 {
3045 struct qeth_card *card = dev->ml_priv;
3046
3047 QETH_CARD_TEXT(card, 5, "qethope_");
3048 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3049 QETH_CARD_TEXT(card, 3, "openREC");
3050 return -ERESTARTSYS;
3051 }
3052 return __qeth_l3_open(dev);
3053 }
3054
qeth_l3_stop(struct net_device * dev)3055 static int qeth_l3_stop(struct net_device *dev)
3056 {
3057 struct qeth_card *card = dev->ml_priv;
3058
3059 QETH_CARD_TEXT(card, 4, "qethstop");
3060 netif_tx_disable(dev);
3061 if (card->state == CARD_STATE_UP) {
3062 card->state = CARD_STATE_SOFTSETUP;
3063 napi_disable(&card->napi);
3064 }
3065 return 0;
3066 }
3067
qeth_l3_fix_features(struct net_device * dev,netdev_features_t features)3068 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3069 netdev_features_t features)
3070 {
3071 struct qeth_card *card = dev->ml_priv;
3072
3073 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3074 features &= ~NETIF_F_IP_CSUM;
3075 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3076 features &= ~NETIF_F_TSO;
3077 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3078 features &= ~NETIF_F_RXCSUM;
3079 return features;
3080 }
3081
qeth_l3_set_features(struct net_device * dev,netdev_features_t features)3082 static int qeth_l3_set_features(struct net_device *dev,
3083 netdev_features_t features)
3084 {
3085 struct qeth_card *card = dev->ml_priv;
3086 netdev_features_t changed = dev->features ^ features;
3087
3088 if (!(changed & NETIF_F_RXCSUM))
3089 return 0;
3090
3091 if (card->state == CARD_STATE_DOWN ||
3092 card->state == CARD_STATE_RECOVER)
3093 return 0;
3094
3095 return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
3096 }
3097
3098 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3099 .get_link = ethtool_op_get_link,
3100 .get_strings = qeth_core_get_strings,
3101 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3102 .get_sset_count = qeth_core_get_sset_count,
3103 .get_drvinfo = qeth_core_get_drvinfo,
3104 .get_settings = qeth_core_ethtool_get_settings,
3105 };
3106
3107 /*
3108 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3109 * NOARP on the netdevice is no option because it also turns off neighbor
3110 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3111 * arp resolution but we want the hard header (packet socket will work
3112 * e.g. tcpdump)
3113 */
qeth_l3_neigh_setup_noarp(struct neighbour * n)3114 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3115 {
3116 n->nud_state = NUD_NOARP;
3117 memcpy(n->ha, "FAKELL", 6);
3118 n->output = n->ops->connected_output;
3119 return 0;
3120 }
3121
3122 static int
qeth_l3_neigh_setup(struct net_device * dev,struct neigh_parms * np)3123 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3124 {
3125 if (np->tbl->family == AF_INET)
3126 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3127
3128 return 0;
3129 }
3130
3131 static const struct net_device_ops qeth_l3_netdev_ops = {
3132 .ndo_open = qeth_l3_open,
3133 .ndo_stop = qeth_l3_stop,
3134 .ndo_get_stats = qeth_get_stats,
3135 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3136 .ndo_validate_addr = eth_validate_addr,
3137 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3138 .ndo_do_ioctl = qeth_l3_do_ioctl,
3139 .ndo_change_mtu = qeth_change_mtu,
3140 .ndo_fix_features = qeth_l3_fix_features,
3141 .ndo_set_features = qeth_l3_set_features,
3142 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3143 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3144 .ndo_tx_timeout = qeth_tx_timeout,
3145 };
3146
3147 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3148 .ndo_open = qeth_l3_open,
3149 .ndo_stop = qeth_l3_stop,
3150 .ndo_get_stats = qeth_get_stats,
3151 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3152 .ndo_validate_addr = eth_validate_addr,
3153 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3154 .ndo_do_ioctl = qeth_l3_do_ioctl,
3155 .ndo_change_mtu = qeth_change_mtu,
3156 .ndo_fix_features = qeth_l3_fix_features,
3157 .ndo_set_features = qeth_l3_set_features,
3158 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3159 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3160 .ndo_tx_timeout = qeth_tx_timeout,
3161 .ndo_neigh_setup = qeth_l3_neigh_setup,
3162 };
3163
qeth_l3_setup_netdev(struct qeth_card * card)3164 static int qeth_l3_setup_netdev(struct qeth_card *card)
3165 {
3166 int rc;
3167
3168 if (card->info.type == QETH_CARD_TYPE_OSD ||
3169 card->info.type == QETH_CARD_TYPE_OSX) {
3170 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3171 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3172 pr_info("qeth_l3: ignoring TR device\n");
3173 return -ENODEV;
3174 } else {
3175 card->dev = alloc_etherdev(0);
3176 if (!card->dev)
3177 return -ENODEV;
3178 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3179
3180 /*IPv6 address autoconfiguration stuff*/
3181 qeth_l3_get_unique_id(card);
3182 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3183 card->dev->dev_id = card->info.unique_id &
3184 0xffff;
3185 if (!card->info.guestlan) {
3186 card->dev->hw_features = NETIF_F_SG |
3187 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3188 NETIF_F_TSO;
3189 card->dev->features = NETIF_F_RXCSUM;
3190 }
3191 }
3192 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3193 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3194 ether_setup);
3195 if (!card->dev)
3196 return -ENODEV;
3197 card->dev->flags |= IFF_NOARP;
3198 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3199 rc = qeth_l3_iqd_read_initial_mac(card);
3200 if (rc)
3201 return rc;
3202 if (card->options.hsuid[0])
3203 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3204 } else
3205 return -ENODEV;
3206
3207 card->dev->ml_priv = card;
3208 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3209 card->dev->mtu = card->info.initial_mtu;
3210 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3211 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
3212 NETIF_F_HW_VLAN_CTAG_RX |
3213 NETIF_F_HW_VLAN_CTAG_FILTER;
3214 netif_keep_dst(card->dev);
3215 card->dev->gso_max_size = 15 * PAGE_SIZE;
3216
3217 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3218 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3219 netif_carrier_off(card->dev);
3220 return register_netdev(card->dev);
3221 }
3222
qeth_l3_probe_device(struct ccwgroup_device * gdev)3223 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3224 {
3225 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3226 int rc;
3227
3228 rc = qeth_l3_create_device_attributes(&gdev->dev);
3229 if (rc)
3230 return rc;
3231 card->options.layer2 = 0;
3232 card->info.hwtrap = 0;
3233 return 0;
3234 }
3235
qeth_l3_remove_device(struct ccwgroup_device * cgdev)3236 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3237 {
3238 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3239
3240 qeth_l3_remove_device_attributes(&cgdev->dev);
3241
3242 qeth_set_allowed_threads(card, 0, 1);
3243 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3244
3245 if (cgdev->state == CCWGROUP_ONLINE)
3246 qeth_l3_set_offline(cgdev);
3247
3248 if (card->dev) {
3249 unregister_netdev(card->dev);
3250 free_netdev(card->dev);
3251 card->dev = NULL;
3252 }
3253
3254 qeth_l3_clear_ip_list(card, 0);
3255 qeth_l3_clear_ipato_list(card);
3256 return;
3257 }
3258
__qeth_l3_set_online(struct ccwgroup_device * gdev,int recovery_mode)3259 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3260 {
3261 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3262 int rc = 0;
3263 enum qeth_card_states recover_flag;
3264
3265 mutex_lock(&card->discipline_mutex);
3266 mutex_lock(&card->conf_mutex);
3267 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3268 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3269
3270 recover_flag = card->state;
3271 rc = qeth_core_hardsetup_card(card);
3272 if (rc) {
3273 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3274 rc = -ENODEV;
3275 goto out_remove;
3276 }
3277
3278 if (!card->dev && qeth_l3_setup_netdev(card)) {
3279 rc = -ENODEV;
3280 goto out_remove;
3281 }
3282
3283 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3284 if (card->info.hwtrap &&
3285 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3286 card->info.hwtrap = 0;
3287 } else
3288 card->info.hwtrap = 0;
3289
3290 card->state = CARD_STATE_HARDSETUP;
3291 memset(&card->rx, 0, sizeof(struct qeth_rx));
3292 qeth_print_status_message(card);
3293
3294 /* softsetup */
3295 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3296
3297 rc = qeth_l3_setadapter_parms(card);
3298 if (rc)
3299 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3300 if (!card->options.sniffer) {
3301 rc = qeth_l3_start_ipassists(card);
3302 if (rc) {
3303 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3304 goto out_remove;
3305 }
3306 rc = qeth_l3_setrouting_v4(card);
3307 if (rc)
3308 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3309 rc = qeth_l3_setrouting_v6(card);
3310 if (rc)
3311 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3312 }
3313 netif_tx_disable(card->dev);
3314
3315 rc = qeth_init_qdio_queues(card);
3316 if (rc) {
3317 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3318 rc = -ENODEV;
3319 goto out_remove;
3320 }
3321 card->state = CARD_STATE_SOFTSETUP;
3322
3323 qeth_set_allowed_threads(card, 0xffffffff, 0);
3324 qeth_l3_set_ip_addr_list(card);
3325 if (card->lan_online)
3326 netif_carrier_on(card->dev);
3327 else
3328 netif_carrier_off(card->dev);
3329 if (recover_flag == CARD_STATE_RECOVER) {
3330 rtnl_lock();
3331 if (recovery_mode)
3332 __qeth_l3_open(card->dev);
3333 else
3334 dev_open(card->dev);
3335 qeth_l3_set_multicast_list(card->dev);
3336 rtnl_unlock();
3337 }
3338 qeth_trace_features(card);
3339 /* let user_space know that device is online */
3340 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3341 mutex_unlock(&card->conf_mutex);
3342 mutex_unlock(&card->discipline_mutex);
3343 return 0;
3344 out_remove:
3345 qeth_l3_stop_card(card, 0);
3346 ccw_device_set_offline(CARD_DDEV(card));
3347 ccw_device_set_offline(CARD_WDEV(card));
3348 ccw_device_set_offline(CARD_RDEV(card));
3349 qdio_free(CARD_DDEV(card));
3350 if (recover_flag == CARD_STATE_RECOVER)
3351 card->state = CARD_STATE_RECOVER;
3352 else
3353 card->state = CARD_STATE_DOWN;
3354 mutex_unlock(&card->conf_mutex);
3355 mutex_unlock(&card->discipline_mutex);
3356 return rc;
3357 }
3358
qeth_l3_set_online(struct ccwgroup_device * gdev)3359 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3360 {
3361 return __qeth_l3_set_online(gdev, 0);
3362 }
3363
__qeth_l3_set_offline(struct ccwgroup_device * cgdev,int recovery_mode)3364 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3365 int recovery_mode)
3366 {
3367 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3368 int rc = 0, rc2 = 0, rc3 = 0;
3369 enum qeth_card_states recover_flag;
3370
3371 mutex_lock(&card->discipline_mutex);
3372 mutex_lock(&card->conf_mutex);
3373 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3374 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3375
3376 if (card->dev && netif_carrier_ok(card->dev))
3377 netif_carrier_off(card->dev);
3378 recover_flag = card->state;
3379 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3380 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3381 card->info.hwtrap = 1;
3382 }
3383 qeth_l3_stop_card(card, recovery_mode);
3384 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3385 rtnl_lock();
3386 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3387 rtnl_unlock();
3388 }
3389 rc = ccw_device_set_offline(CARD_DDEV(card));
3390 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3391 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3392 if (!rc)
3393 rc = (rc2) ? rc2 : rc3;
3394 if (rc)
3395 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3396 qdio_free(CARD_DDEV(card));
3397 if (recover_flag == CARD_STATE_UP)
3398 card->state = CARD_STATE_RECOVER;
3399 /* let user_space know that device is offline */
3400 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3401 mutex_unlock(&card->conf_mutex);
3402 mutex_unlock(&card->discipline_mutex);
3403 return 0;
3404 }
3405
qeth_l3_set_offline(struct ccwgroup_device * cgdev)3406 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3407 {
3408 return __qeth_l3_set_offline(cgdev, 0);
3409 }
3410
qeth_l3_recover(void * ptr)3411 static int qeth_l3_recover(void *ptr)
3412 {
3413 struct qeth_card *card;
3414 int rc = 0;
3415
3416 card = (struct qeth_card *) ptr;
3417 QETH_CARD_TEXT(card, 2, "recover1");
3418 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3419 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3420 return 0;
3421 QETH_CARD_TEXT(card, 2, "recover2");
3422 dev_warn(&card->gdev->dev,
3423 "A recovery process has been started for the device\n");
3424 qeth_set_recovery_task(card);
3425 __qeth_l3_set_offline(card->gdev, 1);
3426 rc = __qeth_l3_set_online(card->gdev, 1);
3427 if (!rc)
3428 dev_info(&card->gdev->dev,
3429 "Device successfully recovered!\n");
3430 else {
3431 qeth_close_dev(card);
3432 dev_warn(&card->gdev->dev, "The qeth device driver "
3433 "failed to recover an error on the device\n");
3434 }
3435 qeth_clear_recovery_task(card);
3436 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3437 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3438 return 0;
3439 }
3440
qeth_l3_shutdown(struct ccwgroup_device * gdev)3441 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3442 {
3443 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3444 qeth_set_allowed_threads(card, 0, 1);
3445 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3446 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3447 qeth_qdio_clear_card(card, 0);
3448 qeth_clear_qdio_buffers(card);
3449 qdio_free(CARD_DDEV(card));
3450 }
3451
qeth_l3_pm_suspend(struct ccwgroup_device * gdev)3452 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3453 {
3454 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3455
3456 if (card->dev)
3457 netif_device_detach(card->dev);
3458 qeth_set_allowed_threads(card, 0, 1);
3459 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3460 if (gdev->state == CCWGROUP_OFFLINE)
3461 return 0;
3462 if (card->state == CARD_STATE_UP) {
3463 if (card->info.hwtrap)
3464 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3465 __qeth_l3_set_offline(card->gdev, 1);
3466 } else
3467 __qeth_l3_set_offline(card->gdev, 0);
3468 return 0;
3469 }
3470
qeth_l3_pm_resume(struct ccwgroup_device * gdev)3471 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3472 {
3473 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3474 int rc = 0;
3475
3476 if (gdev->state == CCWGROUP_OFFLINE)
3477 goto out;
3478
3479 if (card->state == CARD_STATE_RECOVER) {
3480 rc = __qeth_l3_set_online(card->gdev, 1);
3481 if (rc) {
3482 rtnl_lock();
3483 dev_close(card->dev);
3484 rtnl_unlock();
3485 }
3486 } else
3487 rc = __qeth_l3_set_online(card->gdev, 0);
3488 out:
3489 qeth_set_allowed_threads(card, 0xffffffff, 0);
3490 if (card->dev)
3491 netif_device_attach(card->dev);
3492 if (rc)
3493 dev_warn(&card->gdev->dev, "The qeth device driver "
3494 "failed to recover an error on the device\n");
3495 return rc;
3496 }
3497
3498 /* Returns zero if the command is successfully "consumed" */
qeth_l3_control_event(struct qeth_card * card,struct qeth_ipa_cmd * cmd)3499 static int qeth_l3_control_event(struct qeth_card *card,
3500 struct qeth_ipa_cmd *cmd)
3501 {
3502 return 1;
3503 }
3504
3505 struct qeth_discipline qeth_l3_discipline = {
3506 .devtype = &qeth_generic_devtype,
3507 .start_poll = qeth_qdio_start_poll,
3508 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3509 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3510 .recover = qeth_l3_recover,
3511 .setup = qeth_l3_probe_device,
3512 .remove = qeth_l3_remove_device,
3513 .set_online = qeth_l3_set_online,
3514 .set_offline = qeth_l3_set_offline,
3515 .shutdown = qeth_l3_shutdown,
3516 .freeze = qeth_l3_pm_suspend,
3517 .thaw = qeth_l3_pm_resume,
3518 .restore = qeth_l3_pm_resume,
3519 .control_event_handler = qeth_l3_control_event,
3520 };
3521 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3522
qeth_l3_ip_event(struct notifier_block * this,unsigned long event,void * ptr)3523 static int qeth_l3_ip_event(struct notifier_block *this,
3524 unsigned long event, void *ptr)
3525 {
3526 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3527 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3528 struct qeth_ipaddr *addr;
3529 struct qeth_card *card;
3530
3531 if (dev_net(dev) != &init_net)
3532 return NOTIFY_DONE;
3533
3534 card = qeth_l3_get_card_from_dev(dev);
3535 if (!card)
3536 return NOTIFY_DONE;
3537 QETH_CARD_TEXT(card, 3, "ipevent");
3538
3539 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3540 if (addr != NULL) {
3541 addr->u.a4.addr = ifa->ifa_address;
3542 addr->u.a4.mask = ifa->ifa_mask;
3543 addr->type = QETH_IP_TYPE_NORMAL;
3544 } else
3545 goto out;
3546
3547 switch (event) {
3548 case NETDEV_UP:
3549 if (!qeth_l3_add_ip(card, addr))
3550 kfree(addr);
3551 break;
3552 case NETDEV_DOWN:
3553 if (!qeth_l3_delete_ip(card, addr))
3554 kfree(addr);
3555 break;
3556 default:
3557 break;
3558 }
3559 qeth_l3_set_ip_addr_list(card);
3560 out:
3561 return NOTIFY_DONE;
3562 }
3563
3564 static struct notifier_block qeth_l3_ip_notifier = {
3565 qeth_l3_ip_event,
3566 NULL,
3567 };
3568
3569 #ifdef CONFIG_QETH_IPV6
3570 /**
3571 * IPv6 event handler
3572 */
qeth_l3_ip6_event(struct notifier_block * this,unsigned long event,void * ptr)3573 static int qeth_l3_ip6_event(struct notifier_block *this,
3574 unsigned long event, void *ptr)
3575 {
3576 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3577 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3578 struct qeth_ipaddr *addr;
3579 struct qeth_card *card;
3580
3581 card = qeth_l3_get_card_from_dev(dev);
3582 if (!card)
3583 return NOTIFY_DONE;
3584 QETH_CARD_TEXT(card, 3, "ip6event");
3585 if (!qeth_is_supported(card, IPA_IPV6))
3586 return NOTIFY_DONE;
3587
3588 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3589 if (addr != NULL) {
3590 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3591 addr->u.a6.pfxlen = ifa->prefix_len;
3592 addr->type = QETH_IP_TYPE_NORMAL;
3593 } else
3594 goto out;
3595
3596 switch (event) {
3597 case NETDEV_UP:
3598 if (!qeth_l3_add_ip(card, addr))
3599 kfree(addr);
3600 break;
3601 case NETDEV_DOWN:
3602 if (!qeth_l3_delete_ip(card, addr))
3603 kfree(addr);
3604 break;
3605 default:
3606 break;
3607 }
3608 qeth_l3_set_ip_addr_list(card);
3609 out:
3610 return NOTIFY_DONE;
3611 }
3612
3613 static struct notifier_block qeth_l3_ip6_notifier = {
3614 qeth_l3_ip6_event,
3615 NULL,
3616 };
3617 #endif
3618
qeth_l3_register_notifiers(void)3619 static int qeth_l3_register_notifiers(void)
3620 {
3621 int rc;
3622
3623 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3624 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3625 if (rc)
3626 return rc;
3627 #ifdef CONFIG_QETH_IPV6
3628 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3629 if (rc) {
3630 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3631 return rc;
3632 }
3633 #else
3634 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3635 #endif
3636 return 0;
3637 }
3638
qeth_l3_unregister_notifiers(void)3639 static void qeth_l3_unregister_notifiers(void)
3640 {
3641
3642 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3643 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3644 #ifdef CONFIG_QETH_IPV6
3645 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3646 #endif /* QETH_IPV6 */
3647 }
3648
qeth_l3_init(void)3649 static int __init qeth_l3_init(void)
3650 {
3651 int rc = 0;
3652
3653 pr_info("register layer 3 discipline\n");
3654 rc = qeth_l3_register_notifiers();
3655 return rc;
3656 }
3657
qeth_l3_exit(void)3658 static void __exit qeth_l3_exit(void)
3659 {
3660 qeth_l3_unregister_notifiers();
3661 pr_info("unregister layer 3 discipline\n");
3662 }
3663
3664 module_init(qeth_l3_init);
3665 module_exit(qeth_l3_exit);
3666 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3667 MODULE_DESCRIPTION("qeth layer 3 discipline");
3668 MODULE_LICENSE("GPL");
3669