1 /*
2 * drivers/s390/net/qeth_l3_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/bitops.h>
17 #include <linux/string.h>
18 #include <linux/errno.h>
19 #include <linux/kernel.h>
20 #include <linux/etherdevice.h>
21 #include <linux/mii.h>
22 #include <linux/ip.h>
23 #include <linux/ipv6.h>
24 #include <linux/inetdevice.h>
25 #include <linux/igmp.h>
26 #include <linux/slab.h>
27 #include <linux/if_vlan.h>
28
29 #include <net/ip.h>
30 #include <net/arp.h>
31 #include <net/route.h>
32 #include <net/ip6_fib.h>
33 #include <net/ip6_checksum.h>
34 #include <net/iucv/af_iucv.h>
35
36 #include "qeth_l3.h"
37
38
39 static int qeth_l3_set_offline(struct ccwgroup_device *);
40 static int qeth_l3_recover(void *);
41 static int qeth_l3_stop(struct net_device *);
42 static void qeth_l3_set_multicast_list(struct net_device *);
43 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
44 static int qeth_l3_register_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
48 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
49 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
50
qeth_l3_isxdigit(char * buf)51 static int qeth_l3_isxdigit(char *buf)
52 {
53 while (*buf) {
54 if (!isxdigit(*buf++))
55 return 0;
56 }
57 return 1;
58 }
59
qeth_l3_ipaddr4_to_string(const __u8 * addr,char * buf)60 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
61 {
62 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
63 }
64
qeth_l3_string_to_ipaddr4(const char * buf,__u8 * addr)65 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
66 {
67 int count = 0, rc = 0;
68 int in[4];
69 char c;
70
71 rc = sscanf(buf, "%u.%u.%u.%u%c",
72 &in[0], &in[1], &in[2], &in[3], &c);
73 if (rc != 4 && (rc != 5 || c != '\n'))
74 return -EINVAL;
75 for (count = 0; count < 4; count++) {
76 if (in[count] > 255)
77 return -EINVAL;
78 addr[count] = in[count];
79 }
80 return 0;
81 }
82
qeth_l3_ipaddr6_to_string(const __u8 * addr,char * buf)83 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
84 {
85 sprintf(buf, "%pI6", addr);
86 }
87
qeth_l3_string_to_ipaddr6(const char * buf,__u8 * addr)88 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
89 {
90 const char *end, *end_tmp, *start;
91 __u16 *in;
92 char num[5];
93 int num2, cnt, out, found, save_cnt;
94 unsigned short in_tmp[8] = {0, };
95
96 cnt = out = found = save_cnt = num2 = 0;
97 end = start = buf;
98 in = (__u16 *) addr;
99 memset(in, 0, 16);
100 while (*end) {
101 end = strchr(start, ':');
102 if (end == NULL) {
103 end = buf + strlen(buf);
104 end_tmp = strchr(start, '\n');
105 if (end_tmp != NULL)
106 end = end_tmp;
107 out = 1;
108 }
109 if ((end - start)) {
110 memset(num, 0, 5);
111 if ((end - start) > 4)
112 return -EINVAL;
113 memcpy(num, start, end - start);
114 if (!qeth_l3_isxdigit(num))
115 return -EINVAL;
116 sscanf(start, "%x", &num2);
117 if (found)
118 in_tmp[save_cnt++] = num2;
119 else
120 in[cnt++] = num2;
121 if (out)
122 break;
123 } else {
124 if (found)
125 return -EINVAL;
126 found = 1;
127 }
128 start = ++end;
129 }
130 if (cnt + save_cnt > 8)
131 return -EINVAL;
132 cnt = 7;
133 while (save_cnt)
134 in[cnt--] = in_tmp[--save_cnt];
135 return 0;
136 }
137
qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto,const __u8 * addr,char * buf)138 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
139 char *buf)
140 {
141 if (proto == QETH_PROT_IPV4)
142 qeth_l3_ipaddr4_to_string(addr, buf);
143 else if (proto == QETH_PROT_IPV6)
144 qeth_l3_ipaddr6_to_string(addr, buf);
145 }
146
qeth_l3_string_to_ipaddr(const char * buf,enum qeth_prot_versions proto,__u8 * addr)147 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
148 __u8 *addr)
149 {
150 if (proto == QETH_PROT_IPV4)
151 return qeth_l3_string_to_ipaddr4(buf, addr);
152 else if (proto == QETH_PROT_IPV6)
153 return qeth_l3_string_to_ipaddr6(buf, addr);
154 else
155 return -EINVAL;
156 }
157
qeth_l3_convert_addr_to_bits(u8 * addr,u8 * bits,int len)158 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
159 {
160 int i, j;
161 u8 octet;
162
163 for (i = 0; i < len; ++i) {
164 octet = addr[i];
165 for (j = 7; j >= 0; --j) {
166 bits[i*8 + j] = octet & 1;
167 octet >>= 1;
168 }
169 }
170 }
171
qeth_l3_is_addr_covered_by_ipato(struct qeth_card * card,struct qeth_ipaddr * addr)172 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
173 struct qeth_ipaddr *addr)
174 {
175 struct qeth_ipato_entry *ipatoe;
176 u8 addr_bits[128] = {0, };
177 u8 ipatoe_bits[128] = {0, };
178 int rc = 0;
179
180 if (!card->ipato.enabled)
181 return 0;
182
183 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
184 (addr->proto == QETH_PROT_IPV4)? 4:16);
185 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
186 if (addr->proto != ipatoe->proto)
187 continue;
188 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
189 (ipatoe->proto == QETH_PROT_IPV4) ?
190 4 : 16);
191 if (addr->proto == QETH_PROT_IPV4)
192 rc = !memcmp(addr_bits, ipatoe_bits,
193 min(32, ipatoe->mask_bits));
194 else
195 rc = !memcmp(addr_bits, ipatoe_bits,
196 min(128, ipatoe->mask_bits));
197 if (rc)
198 break;
199 }
200 /* invert? */
201 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
202 rc = !rc;
203 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
204 rc = !rc;
205
206 return rc;
207 }
208
209 /*
210 * Add IP to be added to todo list. If there is already an "add todo"
211 * in this list we just incremenent the reference count.
212 * Returns 0 if we just incremented reference count.
213 */
__qeth_l3_insert_ip_todo(struct qeth_card * card,struct qeth_ipaddr * addr,int add)214 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
215 struct qeth_ipaddr *addr, int add)
216 {
217 struct qeth_ipaddr *tmp, *t;
218 int found = 0;
219
220 if (card->options.sniffer)
221 return 0;
222 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
223 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
224 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
225 return 0;
226 if ((tmp->proto == QETH_PROT_IPV4) &&
227 (addr->proto == QETH_PROT_IPV4) &&
228 (tmp->type == addr->type) &&
229 (tmp->is_multicast == addr->is_multicast) &&
230 (tmp->u.a4.addr == addr->u.a4.addr) &&
231 (tmp->u.a4.mask == addr->u.a4.mask)) {
232 found = 1;
233 break;
234 }
235 if ((tmp->proto == QETH_PROT_IPV6) &&
236 (addr->proto == QETH_PROT_IPV6) &&
237 (tmp->type == addr->type) &&
238 (tmp->is_multicast == addr->is_multicast) &&
239 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
240 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
241 sizeof(struct in6_addr)) == 0)) {
242 found = 1;
243 break;
244 }
245 }
246 if (found) {
247 if (addr->users != 0)
248 tmp->users += addr->users;
249 else
250 tmp->users += add ? 1 : -1;
251 if (tmp->users == 0) {
252 list_del(&tmp->entry);
253 kfree(tmp);
254 }
255 return 0;
256 } else {
257 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
258 list_add(&addr->entry, card->ip_tbd_list);
259 else {
260 if (addr->users == 0)
261 addr->users += add ? 1 : -1;
262 if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
263 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
264 QETH_CARD_TEXT(card, 2, "tkovaddr");
265 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
266 }
267 list_add_tail(&addr->entry, card->ip_tbd_list);
268 }
269 return 1;
270 }
271 }
272
qeth_l3_delete_ip(struct qeth_card * card,struct qeth_ipaddr * addr)273 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
274 {
275 unsigned long flags;
276 int rc = 0;
277
278 QETH_CARD_TEXT(card, 4, "delip");
279
280 if (addr->proto == QETH_PROT_IPV4)
281 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
282 else {
283 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
284 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
285 }
286 spin_lock_irqsave(&card->ip_lock, flags);
287 rc = __qeth_l3_insert_ip_todo(card, addr, 0);
288 spin_unlock_irqrestore(&card->ip_lock, flags);
289 return rc;
290 }
291
qeth_l3_add_ip(struct qeth_card * card,struct qeth_ipaddr * addr)292 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
293 {
294 unsigned long flags;
295 int rc = 0;
296
297 QETH_CARD_TEXT(card, 4, "addip");
298 if (addr->proto == QETH_PROT_IPV4)
299 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
300 else {
301 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
302 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
303 }
304 spin_lock_irqsave(&card->ip_lock, flags);
305 rc = __qeth_l3_insert_ip_todo(card, addr, 1);
306 spin_unlock_irqrestore(&card->ip_lock, flags);
307 return rc;
308 }
309
310
qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)311 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
312 enum qeth_prot_versions prot)
313 {
314 struct qeth_ipaddr *addr;
315
316 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
317 if (addr == NULL) {
318 return NULL;
319 }
320 addr->type = QETH_IP_TYPE_NORMAL;
321 addr->proto = prot;
322 return addr;
323 }
324
qeth_l3_delete_mc_addresses(struct qeth_card * card)325 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
326 {
327 struct qeth_ipaddr *iptodo;
328 unsigned long flags;
329
330 QETH_CARD_TEXT(card, 4, "delmc");
331 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
332 if (!iptodo) {
333 QETH_CARD_TEXT(card, 2, "dmcnomem");
334 return;
335 }
336 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
337 spin_lock_irqsave(&card->ip_lock, flags);
338 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
339 kfree(iptodo);
340 spin_unlock_irqrestore(&card->ip_lock, flags);
341 }
342
343 /*
344 * Add/remove address to/from card's ip list, i.e. try to add or remove
345 * reference to/from an IP address that is already registered on the card.
346 * Returns:
347 * 0 address was on card and its reference count has been adjusted,
348 * but is still > 0, so nothing has to be done
349 * also returns 0 if card was not on card and the todo was to delete
350 * the address -> there is also nothing to be done
351 * 1 address was not on card and the todo is to add it to the card's ip
352 * list
353 * -1 address was on card and its reference count has been decremented
354 * to <= 0 by the todo -> address must be removed from card
355 */
__qeth_l3_ref_ip_on_card(struct qeth_card * card,struct qeth_ipaddr * todo,struct qeth_ipaddr ** __addr)356 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
357 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
358 {
359 struct qeth_ipaddr *addr;
360 int found = 0;
361
362 list_for_each_entry(addr, &card->ip_list, entry) {
363 if ((addr->proto == QETH_PROT_IPV4) &&
364 (todo->proto == QETH_PROT_IPV4) &&
365 (addr->type == todo->type) &&
366 (addr->u.a4.addr == todo->u.a4.addr) &&
367 (addr->u.a4.mask == todo->u.a4.mask)) {
368 found = 1;
369 break;
370 }
371 if ((addr->proto == QETH_PROT_IPV6) &&
372 (todo->proto == QETH_PROT_IPV6) &&
373 (addr->type == todo->type) &&
374 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
375 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
376 sizeof(struct in6_addr)) == 0)) {
377 found = 1;
378 break;
379 }
380 }
381 if (found) {
382 addr->users += todo->users;
383 if (addr->users <= 0) {
384 *__addr = addr;
385 return -1;
386 } else {
387 /* for VIPA and RXIP limit refcount to 1 */
388 if (addr->type != QETH_IP_TYPE_NORMAL)
389 addr->users = 1;
390 return 0;
391 }
392 }
393 if (todo->users > 0) {
394 /* for VIPA and RXIP limit refcount to 1 */
395 if (todo->type != QETH_IP_TYPE_NORMAL)
396 todo->users = 1;
397 return 1;
398 } else
399 return 0;
400 }
401
__qeth_l3_delete_all_mc(struct qeth_card * card,unsigned long * flags)402 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
403 unsigned long *flags)
404 {
405 struct list_head fail_list;
406 struct qeth_ipaddr *addr, *tmp;
407 int rc;
408
409 INIT_LIST_HEAD(&fail_list);
410 again:
411 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
412 if (addr->is_multicast) {
413 list_del(&addr->entry);
414 spin_unlock_irqrestore(&card->ip_lock, *flags);
415 rc = qeth_l3_deregister_addr_entry(card, addr);
416 spin_lock_irqsave(&card->ip_lock, *flags);
417 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
418 kfree(addr);
419 else
420 list_add_tail(&addr->entry, &fail_list);
421 goto again;
422 }
423 }
424 list_splice(&fail_list, &card->ip_list);
425 }
426
qeth_l3_set_ip_addr_list(struct qeth_card * card)427 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
428 {
429 struct list_head *tbd_list;
430 struct qeth_ipaddr *todo, *addr;
431 unsigned long flags;
432 int rc;
433
434 QETH_CARD_TEXT(card, 2, "sdiplist");
435 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
436
437 if ((card->state != CARD_STATE_UP &&
438 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
439 return;
440 }
441
442 spin_lock_irqsave(&card->ip_lock, flags);
443 tbd_list = card->ip_tbd_list;
444 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
445 if (!card->ip_tbd_list) {
446 QETH_CARD_TEXT(card, 0, "silnomem");
447 card->ip_tbd_list = tbd_list;
448 spin_unlock_irqrestore(&card->ip_lock, flags);
449 return;
450 } else
451 INIT_LIST_HEAD(card->ip_tbd_list);
452
453 while (!list_empty(tbd_list)) {
454 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
455 list_del(&todo->entry);
456 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
457 __qeth_l3_delete_all_mc(card, &flags);
458 kfree(todo);
459 continue;
460 }
461 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
462 if (rc == 0) {
463 /* nothing to be done; only adjusted refcount */
464 kfree(todo);
465 } else if (rc == 1) {
466 /* new entry to be added to on-card list */
467 spin_unlock_irqrestore(&card->ip_lock, flags);
468 rc = qeth_l3_register_addr_entry(card, todo);
469 spin_lock_irqsave(&card->ip_lock, flags);
470 if (!rc || (rc == IPA_RC_LAN_OFFLINE))
471 list_add_tail(&todo->entry, &card->ip_list);
472 else
473 kfree(todo);
474 } else if (rc == -1) {
475 /* on-card entry to be removed */
476 list_del_init(&addr->entry);
477 spin_unlock_irqrestore(&card->ip_lock, flags);
478 rc = qeth_l3_deregister_addr_entry(card, addr);
479 spin_lock_irqsave(&card->ip_lock, flags);
480 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
481 kfree(addr);
482 else
483 list_add_tail(&addr->entry, &card->ip_list);
484 kfree(todo);
485 }
486 }
487 spin_unlock_irqrestore(&card->ip_lock, flags);
488 kfree(tbd_list);
489 }
490
qeth_l3_clear_ip_list(struct qeth_card * card,int recover)491 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
492 {
493 struct qeth_ipaddr *addr, *tmp;
494 unsigned long flags;
495
496 QETH_CARD_TEXT(card, 4, "clearip");
497 if (recover && card->options.sniffer)
498 return;
499 spin_lock_irqsave(&card->ip_lock, flags);
500 /* clear todo list */
501 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
502 list_del(&addr->entry);
503 kfree(addr);
504 }
505
506 while (!list_empty(&card->ip_list)) {
507 addr = list_entry(card->ip_list.next,
508 struct qeth_ipaddr, entry);
509 list_del_init(&addr->entry);
510 if (!recover || addr->is_multicast) {
511 kfree(addr);
512 continue;
513 }
514 list_add_tail(&addr->entry, card->ip_tbd_list);
515 }
516 spin_unlock_irqrestore(&card->ip_lock, flags);
517 }
518
qeth_l3_address_exists_in_list(struct list_head * list,struct qeth_ipaddr * addr,int same_type)519 static int qeth_l3_address_exists_in_list(struct list_head *list,
520 struct qeth_ipaddr *addr, int same_type)
521 {
522 struct qeth_ipaddr *tmp;
523
524 list_for_each_entry(tmp, list, entry) {
525 if ((tmp->proto == QETH_PROT_IPV4) &&
526 (addr->proto == QETH_PROT_IPV4) &&
527 ((same_type && (tmp->type == addr->type)) ||
528 (!same_type && (tmp->type != addr->type))) &&
529 (tmp->u.a4.addr == addr->u.a4.addr))
530 return 1;
531
532 if ((tmp->proto == QETH_PROT_IPV6) &&
533 (addr->proto == QETH_PROT_IPV6) &&
534 ((same_type && (tmp->type == addr->type)) ||
535 (!same_type && (tmp->type != addr->type))) &&
536 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
537 sizeof(struct in6_addr)) == 0))
538 return 1;
539
540 }
541 return 0;
542 }
543
qeth_l3_send_setdelmc(struct qeth_card * card,struct qeth_ipaddr * addr,int ipacmd)544 static int qeth_l3_send_setdelmc(struct qeth_card *card,
545 struct qeth_ipaddr *addr, int ipacmd)
546 {
547 int rc;
548 struct qeth_cmd_buffer *iob;
549 struct qeth_ipa_cmd *cmd;
550
551 QETH_CARD_TEXT(card, 4, "setdelmc");
552
553 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
554 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
555 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
556 if (addr->proto == QETH_PROT_IPV6)
557 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
558 sizeof(struct in6_addr));
559 else
560 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
561
562 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
563
564 return rc;
565 }
566
qeth_l3_fill_netmask(u8 * netmask,unsigned int len)567 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
568 {
569 int i, j;
570 for (i = 0; i < 16; i++) {
571 j = (len) - (i * 8);
572 if (j >= 8)
573 netmask[i] = 0xff;
574 else if (j > 0)
575 netmask[i] = (u8)(0xFF00 >> j);
576 else
577 netmask[i] = 0;
578 }
579 }
580
qeth_l3_send_setdelip(struct qeth_card * card,struct qeth_ipaddr * addr,int ipacmd,unsigned int flags)581 static int qeth_l3_send_setdelip(struct qeth_card *card,
582 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
583 {
584 int rc;
585 struct qeth_cmd_buffer *iob;
586 struct qeth_ipa_cmd *cmd;
587 __u8 netmask[16];
588
589 QETH_CARD_TEXT(card, 4, "setdelip");
590 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
591
592 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
593 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
594 if (addr->proto == QETH_PROT_IPV6) {
595 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
596 sizeof(struct in6_addr));
597 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
598 memcpy(cmd->data.setdelip6.mask, netmask,
599 sizeof(struct in6_addr));
600 cmd->data.setdelip6.flags = flags;
601 } else {
602 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
603 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
604 cmd->data.setdelip4.flags = flags;
605 }
606
607 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
608
609 return rc;
610 }
611
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 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
622 cmd->data.setrtg.type = (type);
623 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
624
625 return rc;
626 }
627
qeth_l3_correct_routing_type(struct qeth_card * card,enum qeth_routing_types * type,enum qeth_prot_versions prot)628 static void qeth_l3_correct_routing_type(struct qeth_card *card,
629 enum qeth_routing_types *type, enum qeth_prot_versions prot)
630 {
631 if (card->info.type == QETH_CARD_TYPE_IQD) {
632 switch (*type) {
633 case NO_ROUTER:
634 case PRIMARY_CONNECTOR:
635 case SECONDARY_CONNECTOR:
636 case MULTICAST_ROUTER:
637 return;
638 default:
639 goto out_inval;
640 }
641 } else {
642 switch (*type) {
643 case NO_ROUTER:
644 case PRIMARY_ROUTER:
645 case SECONDARY_ROUTER:
646 return;
647 case MULTICAST_ROUTER:
648 if (qeth_is_ipafunc_supported(card, prot,
649 IPA_OSA_MC_ROUTER))
650 return;
651 default:
652 goto out_inval;
653 }
654 }
655 out_inval:
656 *type = NO_ROUTER;
657 }
658
qeth_l3_setrouting_v4(struct qeth_card * card)659 int qeth_l3_setrouting_v4(struct qeth_card *card)
660 {
661 int rc;
662
663 QETH_CARD_TEXT(card, 3, "setrtg4");
664
665 qeth_l3_correct_routing_type(card, &card->options.route4.type,
666 QETH_PROT_IPV4);
667
668 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
669 QETH_PROT_IPV4);
670 if (rc) {
671 card->options.route4.type = NO_ROUTER;
672 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
673 " on %s. Type set to 'no router'.\n", rc,
674 QETH_CARD_IFNAME(card));
675 }
676 return rc;
677 }
678
qeth_l3_setrouting_v6(struct qeth_card * card)679 int qeth_l3_setrouting_v6(struct qeth_card *card)
680 {
681 int rc = 0;
682
683 QETH_CARD_TEXT(card, 3, "setrtg6");
684 #ifdef CONFIG_QETH_IPV6
685
686 if (!qeth_is_supported(card, IPA_IPV6))
687 return 0;
688 qeth_l3_correct_routing_type(card, &card->options.route6.type,
689 QETH_PROT_IPV6);
690
691 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
692 QETH_PROT_IPV6);
693 if (rc) {
694 card->options.route6.type = NO_ROUTER;
695 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
696 " on %s. Type set to 'no router'.\n", rc,
697 QETH_CARD_IFNAME(card));
698 }
699 #endif
700 return rc;
701 }
702
703 /*
704 * IP address takeover related functions
705 */
qeth_l3_clear_ipato_list(struct qeth_card * card)706 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
707 {
708
709 struct qeth_ipato_entry *ipatoe, *tmp;
710 unsigned long flags;
711
712 spin_lock_irqsave(&card->ip_lock, flags);
713 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
714 list_del(&ipatoe->entry);
715 kfree(ipatoe);
716 }
717 spin_unlock_irqrestore(&card->ip_lock, flags);
718 }
719
qeth_l3_add_ipato_entry(struct qeth_card * card,struct qeth_ipato_entry * new)720 int qeth_l3_add_ipato_entry(struct qeth_card *card,
721 struct qeth_ipato_entry *new)
722 {
723 struct qeth_ipato_entry *ipatoe;
724 unsigned long flags;
725 int rc = 0;
726
727 QETH_CARD_TEXT(card, 2, "addipato");
728 spin_lock_irqsave(&card->ip_lock, flags);
729 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
730 if (ipatoe->proto != new->proto)
731 continue;
732 if (!memcmp(ipatoe->addr, new->addr,
733 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
734 (ipatoe->mask_bits == new->mask_bits)) {
735 rc = -EEXIST;
736 break;
737 }
738 }
739 if (!rc)
740 list_add_tail(&new->entry, &card->ipato.entries);
741
742 spin_unlock_irqrestore(&card->ip_lock, flags);
743 return rc;
744 }
745
qeth_l3_del_ipato_entry(struct qeth_card * card,enum qeth_prot_versions proto,u8 * addr,int mask_bits)746 void qeth_l3_del_ipato_entry(struct qeth_card *card,
747 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
748 {
749 struct qeth_ipato_entry *ipatoe, *tmp;
750 unsigned long flags;
751
752 QETH_CARD_TEXT(card, 2, "delipato");
753 spin_lock_irqsave(&card->ip_lock, flags);
754 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
755 if (ipatoe->proto != proto)
756 continue;
757 if (!memcmp(ipatoe->addr, addr,
758 (proto == QETH_PROT_IPV4)? 4:16) &&
759 (ipatoe->mask_bits == mask_bits)) {
760 list_del(&ipatoe->entry);
761 kfree(ipatoe);
762 }
763 }
764 spin_unlock_irqrestore(&card->ip_lock, flags);
765 }
766
767 /*
768 * VIPA related functions
769 */
qeth_l3_add_vipa(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)770 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
771 const u8 *addr)
772 {
773 struct qeth_ipaddr *ipaddr;
774 unsigned long flags;
775 int rc = 0;
776
777 ipaddr = qeth_l3_get_addr_buffer(proto);
778 if (ipaddr) {
779 if (proto == QETH_PROT_IPV4) {
780 QETH_CARD_TEXT(card, 2, "addvipa4");
781 memcpy(&ipaddr->u.a4.addr, addr, 4);
782 ipaddr->u.a4.mask = 0;
783 } else if (proto == QETH_PROT_IPV6) {
784 QETH_CARD_TEXT(card, 2, "addvipa6");
785 memcpy(&ipaddr->u.a6.addr, addr, 16);
786 ipaddr->u.a6.pfxlen = 0;
787 }
788 ipaddr->type = QETH_IP_TYPE_VIPA;
789 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
790 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
791 } else
792 return -ENOMEM;
793 spin_lock_irqsave(&card->ip_lock, flags);
794 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
795 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
796 rc = -EEXIST;
797 spin_unlock_irqrestore(&card->ip_lock, flags);
798 if (rc) {
799 return rc;
800 }
801 if (!qeth_l3_add_ip(card, ipaddr))
802 kfree(ipaddr);
803 qeth_l3_set_ip_addr_list(card);
804 return rc;
805 }
806
qeth_l3_del_vipa(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)807 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
808 const u8 *addr)
809 {
810 struct qeth_ipaddr *ipaddr;
811
812 ipaddr = qeth_l3_get_addr_buffer(proto);
813 if (ipaddr) {
814 if (proto == QETH_PROT_IPV4) {
815 QETH_CARD_TEXT(card, 2, "delvipa4");
816 memcpy(&ipaddr->u.a4.addr, addr, 4);
817 ipaddr->u.a4.mask = 0;
818 } else if (proto == QETH_PROT_IPV6) {
819 QETH_CARD_TEXT(card, 2, "delvipa6");
820 memcpy(&ipaddr->u.a6.addr, addr, 16);
821 ipaddr->u.a6.pfxlen = 0;
822 }
823 ipaddr->type = QETH_IP_TYPE_VIPA;
824 } else
825 return;
826 if (!qeth_l3_delete_ip(card, ipaddr))
827 kfree(ipaddr);
828 qeth_l3_set_ip_addr_list(card);
829 }
830
831 /*
832 * proxy ARP related functions
833 */
qeth_l3_add_rxip(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)834 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
835 const u8 *addr)
836 {
837 struct qeth_ipaddr *ipaddr;
838 unsigned long flags;
839 int rc = 0;
840
841 ipaddr = qeth_l3_get_addr_buffer(proto);
842 if (ipaddr) {
843 if (proto == QETH_PROT_IPV4) {
844 QETH_CARD_TEXT(card, 2, "addrxip4");
845 memcpy(&ipaddr->u.a4.addr, addr, 4);
846 ipaddr->u.a4.mask = 0;
847 } else if (proto == QETH_PROT_IPV6) {
848 QETH_CARD_TEXT(card, 2, "addrxip6");
849 memcpy(&ipaddr->u.a6.addr, addr, 16);
850 ipaddr->u.a6.pfxlen = 0;
851 }
852 ipaddr->type = QETH_IP_TYPE_RXIP;
853 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
854 ipaddr->del_flags = 0;
855 } else
856 return -ENOMEM;
857 spin_lock_irqsave(&card->ip_lock, flags);
858 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
859 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
860 rc = -EEXIST;
861 spin_unlock_irqrestore(&card->ip_lock, flags);
862 if (rc) {
863 return rc;
864 }
865 if (!qeth_l3_add_ip(card, ipaddr))
866 kfree(ipaddr);
867 qeth_l3_set_ip_addr_list(card);
868 return 0;
869 }
870
qeth_l3_del_rxip(struct qeth_card * card,enum qeth_prot_versions proto,const u8 * addr)871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
872 const u8 *addr)
873 {
874 struct qeth_ipaddr *ipaddr;
875
876 ipaddr = qeth_l3_get_addr_buffer(proto);
877 if (ipaddr) {
878 if (proto == QETH_PROT_IPV4) {
879 QETH_CARD_TEXT(card, 2, "addrxip4");
880 memcpy(&ipaddr->u.a4.addr, addr, 4);
881 ipaddr->u.a4.mask = 0;
882 } else if (proto == QETH_PROT_IPV6) {
883 QETH_CARD_TEXT(card, 2, "addrxip6");
884 memcpy(&ipaddr->u.a6.addr, addr, 16);
885 ipaddr->u.a6.pfxlen = 0;
886 }
887 ipaddr->type = QETH_IP_TYPE_RXIP;
888 } else
889 return;
890 if (!qeth_l3_delete_ip(card, ipaddr))
891 kfree(ipaddr);
892 qeth_l3_set_ip_addr_list(card);
893 }
894
qeth_l3_register_addr_entry(struct qeth_card * card,struct qeth_ipaddr * addr)895 static int qeth_l3_register_addr_entry(struct qeth_card *card,
896 struct qeth_ipaddr *addr)
897 {
898 char buf[50];
899 int rc = 0;
900 int cnt = 3;
901
902 if (addr->proto == QETH_PROT_IPV4) {
903 QETH_CARD_TEXT(card, 2, "setaddr4");
904 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
905 } else if (addr->proto == QETH_PROT_IPV6) {
906 QETH_CARD_TEXT(card, 2, "setaddr6");
907 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
908 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
909 } else {
910 QETH_CARD_TEXT(card, 2, "setaddr?");
911 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
912 }
913 do {
914 if (addr->is_multicast)
915 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
916 else
917 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
918 addr->set_flags);
919 if (rc)
920 QETH_CARD_TEXT(card, 2, "failed");
921 } while ((--cnt > 0) && rc);
922 if (rc) {
923 QETH_CARD_TEXT(card, 2, "FAILED");
924 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
925 dev_warn(&card->gdev->dev,
926 "Registering IP address %s failed\n", buf);
927 }
928 return rc;
929 }
930
qeth_l3_deregister_addr_entry(struct qeth_card * card,struct qeth_ipaddr * addr)931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
932 struct qeth_ipaddr *addr)
933 {
934 int rc = 0;
935
936 if (addr->proto == QETH_PROT_IPV4) {
937 QETH_CARD_TEXT(card, 2, "deladdr4");
938 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
939 } else if (addr->proto == QETH_PROT_IPV6) {
940 QETH_CARD_TEXT(card, 2, "deladdr6");
941 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
942 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
943 } else {
944 QETH_CARD_TEXT(card, 2, "deladdr?");
945 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
946 }
947 if (addr->is_multicast)
948 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
949 else
950 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
951 addr->del_flags);
952 if (rc)
953 QETH_CARD_TEXT(card, 2, "failed");
954
955 return rc;
956 }
957
qeth_l3_get_qeth_hdr_flags4(int cast_type)958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
959 {
960 if (cast_type == RTN_MULTICAST)
961 return QETH_CAST_MULTICAST;
962 if (cast_type == RTN_BROADCAST)
963 return QETH_CAST_BROADCAST;
964 return QETH_CAST_UNICAST;
965 }
966
qeth_l3_get_qeth_hdr_flags6(int cast_type)967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
968 {
969 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
970 if (cast_type == RTN_MULTICAST)
971 return ct | QETH_CAST_MULTICAST;
972 if (cast_type == RTN_ANYCAST)
973 return ct | QETH_CAST_ANYCAST;
974 if (cast_type == RTN_BROADCAST)
975 return ct | QETH_CAST_BROADCAST;
976 return ct | QETH_CAST_UNICAST;
977 }
978
qeth_l3_send_setadp_mode(struct qeth_card * card,__u32 command,__u32 mode)979 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
980 __u32 mode)
981 {
982 int rc;
983 struct qeth_cmd_buffer *iob;
984 struct qeth_ipa_cmd *cmd;
985
986 QETH_CARD_TEXT(card, 4, "adpmode");
987
988 iob = qeth_get_adapter_cmd(card, command,
989 sizeof(struct qeth_ipacmd_setadpparms));
990 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
991 cmd->data.setadapterparms.data.mode = mode;
992 rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
993 NULL);
994 return rc;
995 }
996
qeth_l3_setadapter_hstr(struct qeth_card * card)997 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
998 {
999 int rc;
1000
1001 QETH_CARD_TEXT(card, 4, "adphstr");
1002
1003 if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1004 rc = qeth_l3_send_setadp_mode(card,
1005 IPA_SETADP_SET_BROADCAST_MODE,
1006 card->options.broadcast_mode);
1007 if (rc)
1008 QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1009 "device %s: x%x\n",
1010 CARD_BUS_ID(card), rc);
1011 rc = qeth_l3_send_setadp_mode(card,
1012 IPA_SETADP_ALTER_MAC_ADDRESS,
1013 card->options.macaddr_mode);
1014 if (rc)
1015 QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1016 "device %s: x%x\n", CARD_BUS_ID(card), rc);
1017 return rc;
1018 }
1019 if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1020 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1021 "to set broadcast mode, using ALLRINGS "
1022 "on device %s:\n", CARD_BUS_ID(card));
1023 if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1024 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1025 "to set macaddr mode, using NONCANONICAL "
1026 "on device %s:\n", CARD_BUS_ID(card));
1027 return 0;
1028 }
1029
qeth_l3_setadapter_parms(struct qeth_card * card)1030 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1031 {
1032 int rc;
1033
1034 QETH_DBF_TEXT(SETUP, 2, "setadprm");
1035
1036 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1037 dev_info(&card->gdev->dev,
1038 "set adapter parameters not supported.\n");
1039 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1040 return 0;
1041 }
1042 rc = qeth_query_setadapterparms(card);
1043 if (rc) {
1044 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1045 "0x%x\n", dev_name(&card->gdev->dev), rc);
1046 return rc;
1047 }
1048 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1049 rc = qeth_setadpparms_change_macaddr(card);
1050 if (rc)
1051 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1052 " address failed\n");
1053 }
1054
1055 if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1056 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1057 rc = qeth_l3_setadapter_hstr(card);
1058
1059 return rc;
1060 }
1061
qeth_l3_default_setassparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1062 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1063 struct qeth_reply *reply, unsigned long data)
1064 {
1065 struct qeth_ipa_cmd *cmd;
1066
1067 QETH_CARD_TEXT(card, 4, "defadpcb");
1068
1069 cmd = (struct qeth_ipa_cmd *) data;
1070 if (cmd->hdr.return_code == 0) {
1071 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1072 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1073 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1074 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1075 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1076 }
1077 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1078 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1079 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1080 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1081 }
1082 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1083 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1084 card->info.tx_csum_mask =
1085 cmd->data.setassparms.data.flags_32bit;
1086 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1087 }
1088
1089 return 0;
1090 }
1091
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)1092 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1093 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1094 __u16 len, enum qeth_prot_versions prot)
1095 {
1096 struct qeth_cmd_buffer *iob;
1097 struct qeth_ipa_cmd *cmd;
1098
1099 QETH_CARD_TEXT(card, 4, "getasscm");
1100 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1101
1102 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1103 cmd->data.setassparms.hdr.assist_no = ipa_func;
1104 cmd->data.setassparms.hdr.length = 8 + len;
1105 cmd->data.setassparms.hdr.command_code = cmd_code;
1106 cmd->data.setassparms.hdr.return_code = 0;
1107 cmd->data.setassparms.hdr.seq_no = 0;
1108
1109 return iob;
1110 }
1111
qeth_l3_send_setassparms(struct qeth_card * card,struct qeth_cmd_buffer * iob,__u16 len,long data,int (* reply_cb)(struct qeth_card *,struct qeth_reply *,unsigned long),void * reply_param)1112 static int qeth_l3_send_setassparms(struct qeth_card *card,
1113 struct qeth_cmd_buffer *iob, __u16 len, long data,
1114 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1115 unsigned long),
1116 void *reply_param)
1117 {
1118 int rc;
1119 struct qeth_ipa_cmd *cmd;
1120
1121 QETH_CARD_TEXT(card, 4, "sendassp");
1122
1123 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1124 if (len <= sizeof(__u32))
1125 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1126 else /* (len > sizeof(__u32)) */
1127 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1128
1129 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1130 return rc;
1131 }
1132
1133 #ifdef CONFIG_QETH_IPV6
qeth_l3_send_simple_setassparms_ipv6(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code)1134 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1135 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1136 {
1137 int rc;
1138 struct qeth_cmd_buffer *iob;
1139
1140 QETH_CARD_TEXT(card, 4, "simassp6");
1141 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1142 0, QETH_PROT_IPV6);
1143 rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1144 qeth_l3_default_setassparms_cb, NULL);
1145 return rc;
1146 }
1147 #endif
1148
qeth_l3_send_simple_setassparms(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,long data)1149 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1150 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1151 {
1152 int rc;
1153 int length = 0;
1154 struct qeth_cmd_buffer *iob;
1155
1156 QETH_CARD_TEXT(card, 4, "simassp4");
1157 if (data)
1158 length = sizeof(__u32);
1159 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1160 length, QETH_PROT_IPV4);
1161 rc = qeth_l3_send_setassparms(card, iob, length, data,
1162 qeth_l3_default_setassparms_cb, NULL);
1163 return rc;
1164 }
1165
qeth_l3_start_ipa_arp_processing(struct qeth_card * card)1166 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1167 {
1168 int rc;
1169
1170 QETH_CARD_TEXT(card, 3, "ipaarp");
1171
1172 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1173 dev_info(&card->gdev->dev,
1174 "ARP processing not supported on %s!\n",
1175 QETH_CARD_IFNAME(card));
1176 return 0;
1177 }
1178 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1179 IPA_CMD_ASS_START, 0);
1180 if (rc) {
1181 dev_warn(&card->gdev->dev,
1182 "Starting ARP processing support for %s failed\n",
1183 QETH_CARD_IFNAME(card));
1184 }
1185 return rc;
1186 }
1187
qeth_l3_start_ipa_ip_fragmentation(struct qeth_card * card)1188 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1189 {
1190 int rc;
1191
1192 QETH_CARD_TEXT(card, 3, "ipaipfrg");
1193
1194 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1195 dev_info(&card->gdev->dev,
1196 "Hardware IP fragmentation not supported on %s\n",
1197 QETH_CARD_IFNAME(card));
1198 return -EOPNOTSUPP;
1199 }
1200
1201 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1202 IPA_CMD_ASS_START, 0);
1203 if (rc) {
1204 dev_warn(&card->gdev->dev,
1205 "Starting IP fragmentation support for %s failed\n",
1206 QETH_CARD_IFNAME(card));
1207 } else
1208 dev_info(&card->gdev->dev,
1209 "Hardware IP fragmentation enabled \n");
1210 return rc;
1211 }
1212
qeth_l3_start_ipa_source_mac(struct qeth_card * card)1213 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1214 {
1215 int rc;
1216
1217 QETH_CARD_TEXT(card, 3, "stsrcmac");
1218
1219 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1220 dev_info(&card->gdev->dev,
1221 "Inbound source MAC-address not supported on %s\n",
1222 QETH_CARD_IFNAME(card));
1223 return -EOPNOTSUPP;
1224 }
1225
1226 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1227 IPA_CMD_ASS_START, 0);
1228 if (rc)
1229 dev_warn(&card->gdev->dev,
1230 "Starting source MAC-address support for %s failed\n",
1231 QETH_CARD_IFNAME(card));
1232 return rc;
1233 }
1234
qeth_l3_start_ipa_vlan(struct qeth_card * card)1235 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1236 {
1237 int rc = 0;
1238
1239 QETH_CARD_TEXT(card, 3, "strtvlan");
1240
1241 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1242 dev_info(&card->gdev->dev,
1243 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1244 return -EOPNOTSUPP;
1245 }
1246
1247 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1248 IPA_CMD_ASS_START, 0);
1249 if (rc) {
1250 dev_warn(&card->gdev->dev,
1251 "Starting VLAN support for %s failed\n",
1252 QETH_CARD_IFNAME(card));
1253 } else {
1254 dev_info(&card->gdev->dev, "VLAN enabled\n");
1255 }
1256 return rc;
1257 }
1258
qeth_l3_start_ipa_multicast(struct qeth_card * card)1259 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1260 {
1261 int rc;
1262
1263 QETH_CARD_TEXT(card, 3, "stmcast");
1264
1265 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1266 dev_info(&card->gdev->dev,
1267 "Multicast not supported on %s\n",
1268 QETH_CARD_IFNAME(card));
1269 return -EOPNOTSUPP;
1270 }
1271
1272 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1273 IPA_CMD_ASS_START, 0);
1274 if (rc) {
1275 dev_warn(&card->gdev->dev,
1276 "Starting multicast support for %s failed\n",
1277 QETH_CARD_IFNAME(card));
1278 } else {
1279 dev_info(&card->gdev->dev, "Multicast enabled\n");
1280 card->dev->flags |= IFF_MULTICAST;
1281 }
1282 return rc;
1283 }
1284
1285 #ifdef CONFIG_QETH_IPV6
qeth_l3_softsetup_ipv6(struct qeth_card * card)1286 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1287 {
1288 int rc;
1289
1290 QETH_CARD_TEXT(card, 3, "softipv6");
1291
1292 if (card->info.type == QETH_CARD_TYPE_IQD)
1293 goto out;
1294
1295 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1296 if (rc) {
1297 dev_err(&card->gdev->dev,
1298 "Activating IPv6 support for %s failed\n",
1299 QETH_CARD_IFNAME(card));
1300 return rc;
1301 }
1302 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1303 IPA_CMD_ASS_START, 3);
1304 if (rc) {
1305 dev_err(&card->gdev->dev,
1306 "Activating IPv6 support for %s failed\n",
1307 QETH_CARD_IFNAME(card));
1308 return rc;
1309 }
1310 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1311 IPA_CMD_ASS_START);
1312 if (rc) {
1313 dev_err(&card->gdev->dev,
1314 "Activating IPv6 support for %s failed\n",
1315 QETH_CARD_IFNAME(card));
1316 return rc;
1317 }
1318 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1319 IPA_CMD_ASS_START);
1320 if (rc) {
1321 dev_warn(&card->gdev->dev,
1322 "Enabling the passthrough mode for %s failed\n",
1323 QETH_CARD_IFNAME(card));
1324 return rc;
1325 }
1326 out:
1327 dev_info(&card->gdev->dev, "IPV6 enabled\n");
1328 return 0;
1329 }
1330 #endif
1331
qeth_l3_start_ipa_ipv6(struct qeth_card * card)1332 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1333 {
1334 int rc = 0;
1335
1336 QETH_CARD_TEXT(card, 3, "strtipv6");
1337
1338 if (!qeth_is_supported(card, IPA_IPV6)) {
1339 dev_info(&card->gdev->dev,
1340 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1341 return 0;
1342 }
1343 #ifdef CONFIG_QETH_IPV6
1344 rc = qeth_l3_softsetup_ipv6(card);
1345 #endif
1346 return rc ;
1347 }
1348
qeth_l3_start_ipa_broadcast(struct qeth_card * card)1349 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1350 {
1351 int rc;
1352
1353 QETH_CARD_TEXT(card, 3, "stbrdcst");
1354 card->info.broadcast_capable = 0;
1355 if (!qeth_is_supported(card, IPA_FILTERING)) {
1356 dev_info(&card->gdev->dev,
1357 "Broadcast not supported on %s\n",
1358 QETH_CARD_IFNAME(card));
1359 rc = -EOPNOTSUPP;
1360 goto out;
1361 }
1362 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1363 IPA_CMD_ASS_START, 0);
1364 if (rc) {
1365 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1366 "%s failed\n", QETH_CARD_IFNAME(card));
1367 goto out;
1368 }
1369
1370 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1371 IPA_CMD_ASS_CONFIGURE, 1);
1372 if (rc) {
1373 dev_warn(&card->gdev->dev,
1374 "Setting up broadcast filtering for %s failed\n",
1375 QETH_CARD_IFNAME(card));
1376 goto out;
1377 }
1378 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1379 dev_info(&card->gdev->dev, "Broadcast enabled\n");
1380 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1381 IPA_CMD_ASS_ENABLE, 1);
1382 if (rc) {
1383 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1384 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1385 goto out;
1386 }
1387 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1388 out:
1389 if (card->info.broadcast_capable)
1390 card->dev->flags |= IFF_BROADCAST;
1391 else
1392 card->dev->flags &= ~IFF_BROADCAST;
1393 return rc;
1394 }
1395
qeth_l3_send_checksum_command(struct qeth_card * card)1396 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1397 {
1398 int rc;
1399
1400 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1401 IPA_CMD_ASS_START, 0);
1402 if (rc) {
1403 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1404 "failed, using SW checksumming\n",
1405 QETH_CARD_IFNAME(card));
1406 return rc;
1407 }
1408 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1409 IPA_CMD_ASS_ENABLE,
1410 card->info.csum_mask);
1411 if (rc) {
1412 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1413 "failed, using SW checksumming\n",
1414 QETH_CARD_IFNAME(card));
1415 return rc;
1416 }
1417 return 0;
1418 }
1419
qeth_l3_set_rx_csum(struct qeth_card * card,int on)1420 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1421 {
1422 int rc = 0;
1423
1424 if (on) {
1425 rc = qeth_l3_send_checksum_command(card);
1426 if (rc)
1427 return -EIO;
1428 dev_info(&card->gdev->dev,
1429 "HW Checksumming (inbound) enabled\n");
1430 } else {
1431 rc = qeth_l3_send_simple_setassparms(card,
1432 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1433 if (rc)
1434 return -EIO;
1435 }
1436
1437 return 0;
1438 }
1439
qeth_l3_start_ipa_checksum(struct qeth_card * card)1440 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1441 {
1442 QETH_CARD_TEXT(card, 3, "strtcsum");
1443
1444 if (card->dev->features & NETIF_F_RXCSUM) {
1445 rtnl_lock();
1446 /* force set_features call */
1447 card->dev->features &= ~NETIF_F_RXCSUM;
1448 netdev_update_features(card->dev);
1449 rtnl_unlock();
1450 }
1451 return 0;
1452 }
1453
qeth_l3_start_ipa_tx_checksum(struct qeth_card * card)1454 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1455 {
1456 int rc = 0;
1457
1458 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1459 return rc;
1460 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1461 IPA_CMD_ASS_START, 0);
1462 if (rc)
1463 goto err_out;
1464 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1465 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1466 if (rc)
1467 goto err_out;
1468 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1469 return rc;
1470 err_out:
1471 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1472 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1473 return rc;
1474 }
1475
qeth_l3_start_ipa_tso(struct qeth_card * card)1476 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1477 {
1478 int rc;
1479
1480 QETH_CARD_TEXT(card, 3, "sttso");
1481
1482 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1483 dev_info(&card->gdev->dev,
1484 "Outbound TSO not supported on %s\n",
1485 QETH_CARD_IFNAME(card));
1486 rc = -EOPNOTSUPP;
1487 } else {
1488 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1489 IPA_CMD_ASS_START, 0);
1490 if (rc)
1491 dev_warn(&card->gdev->dev, "Starting outbound TCP "
1492 "segmentation offload for %s failed\n",
1493 QETH_CARD_IFNAME(card));
1494 else
1495 dev_info(&card->gdev->dev,
1496 "Outbound TSO enabled\n");
1497 }
1498 if (rc)
1499 card->dev->features &= ~NETIF_F_TSO;
1500 return rc;
1501 }
1502
qeth_l3_start_ipassists(struct qeth_card * card)1503 static int qeth_l3_start_ipassists(struct qeth_card *card)
1504 {
1505 QETH_CARD_TEXT(card, 3, "strtipas");
1506
1507 qeth_set_access_ctrl_online(card); /* go on*/
1508 qeth_l3_start_ipa_arp_processing(card); /* go on*/
1509 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
1510 qeth_l3_start_ipa_source_mac(card); /* go on*/
1511 qeth_l3_start_ipa_vlan(card); /* go on*/
1512 qeth_l3_start_ipa_multicast(card); /* go on*/
1513 qeth_l3_start_ipa_ipv6(card); /* go on*/
1514 qeth_l3_start_ipa_broadcast(card); /* go on*/
1515 qeth_l3_start_ipa_checksum(card); /* go on*/
1516 qeth_l3_start_ipa_tx_checksum(card);
1517 qeth_l3_start_ipa_tso(card); /* go on*/
1518 return 0;
1519 }
1520
qeth_l3_iqd_read_initial_mac_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1521 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1522 struct qeth_reply *reply, unsigned long data)
1523 {
1524 struct qeth_ipa_cmd *cmd;
1525
1526 cmd = (struct qeth_ipa_cmd *) data;
1527 if (cmd->hdr.return_code == 0)
1528 memcpy(card->dev->dev_addr,
1529 cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1530 else
1531 random_ether_addr(card->dev->dev_addr);
1532
1533 return 0;
1534 }
1535
qeth_l3_iqd_read_initial_mac(struct qeth_card * card)1536 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1537 {
1538 int rc = 0;
1539 struct qeth_cmd_buffer *iob;
1540 struct qeth_ipa_cmd *cmd;
1541
1542 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1543
1544 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1545 QETH_PROT_IPV6);
1546 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1547 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1548 card->info.unique_id;
1549
1550 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1551 NULL);
1552 return rc;
1553 }
1554
qeth_l3_get_unique_id_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1555 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1556 struct qeth_reply *reply, unsigned long data)
1557 {
1558 struct qeth_ipa_cmd *cmd;
1559
1560 cmd = (struct qeth_ipa_cmd *) data;
1561 if (cmd->hdr.return_code == 0)
1562 card->info.unique_id = *((__u16 *)
1563 &cmd->data.create_destroy_addr.unique_id[6]);
1564 else {
1565 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1566 UNIQUE_ID_NOT_BY_CARD;
1567 dev_warn(&card->gdev->dev, "The network adapter failed to "
1568 "generate a unique ID\n");
1569 }
1570 return 0;
1571 }
1572
qeth_l3_get_unique_id(struct qeth_card * card)1573 static int qeth_l3_get_unique_id(struct qeth_card *card)
1574 {
1575 int rc = 0;
1576 struct qeth_cmd_buffer *iob;
1577 struct qeth_ipa_cmd *cmd;
1578
1579 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1580
1581 if (!qeth_is_supported(card, IPA_IPV6)) {
1582 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1583 UNIQUE_ID_NOT_BY_CARD;
1584 return 0;
1585 }
1586
1587 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1588 QETH_PROT_IPV6);
1589 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1590 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1591 card->info.unique_id;
1592
1593 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1594 return rc;
1595 }
1596
1597 static int
qeth_diags_trace_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)1598 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1599 unsigned long data)
1600 {
1601 struct qeth_ipa_cmd *cmd;
1602 __u16 rc;
1603
1604 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1605
1606 cmd = (struct qeth_ipa_cmd *)data;
1607 rc = cmd->hdr.return_code;
1608 if (rc)
1609 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1610 switch (cmd->data.diagass.action) {
1611 case QETH_DIAGS_CMD_TRACE_QUERY:
1612 break;
1613 case QETH_DIAGS_CMD_TRACE_DISABLE:
1614 switch (rc) {
1615 case 0:
1616 case IPA_RC_INVALID_SUBCMD:
1617 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1618 dev_info(&card->gdev->dev, "The HiperSockets network "
1619 "traffic analyzer is deactivated\n");
1620 break;
1621 default:
1622 break;
1623 }
1624 break;
1625 case QETH_DIAGS_CMD_TRACE_ENABLE:
1626 switch (rc) {
1627 case 0:
1628 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1629 dev_info(&card->gdev->dev, "The HiperSockets network "
1630 "traffic analyzer is activated\n");
1631 break;
1632 case IPA_RC_HARDWARE_AUTH_ERROR:
1633 dev_warn(&card->gdev->dev, "The device is not "
1634 "authorized to run as a HiperSockets network "
1635 "traffic analyzer\n");
1636 break;
1637 case IPA_RC_TRACE_ALREADY_ACTIVE:
1638 dev_warn(&card->gdev->dev, "A HiperSockets "
1639 "network traffic analyzer is already "
1640 "active in the HiperSockets LAN\n");
1641 break;
1642 default:
1643 break;
1644 }
1645 break;
1646 default:
1647 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1648 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1649 }
1650
1651 return 0;
1652 }
1653
1654 static int
qeth_diags_trace(struct qeth_card * card,enum qeth_diags_trace_cmds diags_cmd)1655 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1656 {
1657 struct qeth_cmd_buffer *iob;
1658 struct qeth_ipa_cmd *cmd;
1659
1660 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1661
1662 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1663 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1664 cmd->data.diagass.subcmd_len = 16;
1665 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1666 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1667 cmd->data.diagass.action = diags_cmd;
1668 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1669 }
1670
qeth_l3_get_mac_for_ipm(__u32 ipm,char * mac,struct net_device * dev)1671 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1672 struct net_device *dev)
1673 {
1674 if (dev->type == ARPHRD_IEEE802_TR)
1675 ip_tr_mc_map(ipm, mac);
1676 else
1677 ip_eth_mc_map(ipm, mac);
1678 }
1679
qeth_l3_add_mc(struct qeth_card * card,struct in_device * in4_dev)1680 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1681 {
1682 struct qeth_ipaddr *ipm;
1683 struct ip_mc_list *im4;
1684 char buf[MAX_ADDR_LEN];
1685
1686 QETH_CARD_TEXT(card, 4, "addmc");
1687 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1688 im4 = rcu_dereference(im4->next_rcu)) {
1689 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1690 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1691 if (!ipm)
1692 continue;
1693 ipm->u.a4.addr = im4->multiaddr;
1694 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1695 ipm->is_multicast = 1;
1696 if (!qeth_l3_add_ip(card, ipm))
1697 kfree(ipm);
1698 }
1699 }
1700
qeth_l3_add_vlan_mc(struct qeth_card * card)1701 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1702 {
1703 struct in_device *in_dev;
1704 u16 vid;
1705
1706 QETH_CARD_TEXT(card, 4, "addmcvl");
1707 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1708 return;
1709
1710 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1711 struct net_device *netdev;
1712
1713 rcu_read_lock();
1714 netdev = __vlan_find_dev_deep(card->dev, vid);
1715 rcu_read_unlock();
1716 if (netdev == NULL ||
1717 !(netdev->flags & IFF_UP))
1718 continue;
1719 in_dev = in_dev_get(netdev);
1720 if (!in_dev)
1721 continue;
1722 rcu_read_lock();
1723 qeth_l3_add_mc(card, in_dev);
1724 rcu_read_unlock();
1725 in_dev_put(in_dev);
1726 }
1727 }
1728
qeth_l3_add_multicast_ipv4(struct qeth_card * card)1729 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1730 {
1731 struct in_device *in4_dev;
1732
1733 QETH_CARD_TEXT(card, 4, "chkmcv4");
1734 in4_dev = in_dev_get(card->dev);
1735 if (in4_dev == NULL)
1736 return;
1737 rcu_read_lock();
1738 qeth_l3_add_mc(card, in4_dev);
1739 qeth_l3_add_vlan_mc(card);
1740 rcu_read_unlock();
1741 in_dev_put(in4_dev);
1742 }
1743
1744 #ifdef CONFIG_QETH_IPV6
qeth_l3_add_mc6(struct qeth_card * card,struct inet6_dev * in6_dev)1745 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1746 {
1747 struct qeth_ipaddr *ipm;
1748 struct ifmcaddr6 *im6;
1749 char buf[MAX_ADDR_LEN];
1750
1751 QETH_CARD_TEXT(card, 4, "addmc6");
1752 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1753 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1754 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1755 if (!ipm)
1756 continue;
1757 ipm->is_multicast = 1;
1758 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1759 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1760 sizeof(struct in6_addr));
1761 if (!qeth_l3_add_ip(card, ipm))
1762 kfree(ipm);
1763 }
1764 }
1765
qeth_l3_add_vlan_mc6(struct qeth_card * card)1766 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1767 {
1768 struct inet6_dev *in_dev;
1769 u16 vid;
1770
1771 QETH_CARD_TEXT(card, 4, "admc6vl");
1772 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1773 return;
1774
1775 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1776 struct net_device *netdev;
1777
1778 netdev = __vlan_find_dev_deep(card->dev, vid);
1779 if (netdev == NULL ||
1780 !(netdev->flags & IFF_UP))
1781 continue;
1782 in_dev = in6_dev_get(netdev);
1783 if (!in_dev)
1784 continue;
1785 read_lock_bh(&in_dev->lock);
1786 qeth_l3_add_mc6(card, in_dev);
1787 read_unlock_bh(&in_dev->lock);
1788 in6_dev_put(in_dev);
1789 }
1790 }
1791
qeth_l3_add_multicast_ipv6(struct qeth_card * card)1792 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1793 {
1794 struct inet6_dev *in6_dev;
1795
1796 QETH_CARD_TEXT(card, 4, "chkmcv6");
1797 if (!qeth_is_supported(card, IPA_IPV6))
1798 return ;
1799 in6_dev = in6_dev_get(card->dev);
1800 if (in6_dev == NULL)
1801 return;
1802 read_lock_bh(&in6_dev->lock);
1803 qeth_l3_add_mc6(card, in6_dev);
1804 qeth_l3_add_vlan_mc6(card);
1805 read_unlock_bh(&in6_dev->lock);
1806 in6_dev_put(in6_dev);
1807 }
1808 #endif /* CONFIG_QETH_IPV6 */
1809
qeth_l3_free_vlan_addresses4(struct qeth_card * card,unsigned short vid)1810 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1811 unsigned short vid)
1812 {
1813 struct in_device *in_dev;
1814 struct in_ifaddr *ifa;
1815 struct qeth_ipaddr *addr;
1816 struct net_device *netdev;
1817
1818 QETH_CARD_TEXT(card, 4, "frvaddr4");
1819
1820 netdev = __vlan_find_dev_deep(card->dev, vid);
1821 if (!netdev)
1822 return;
1823 in_dev = in_dev_get(netdev);
1824 if (!in_dev)
1825 return;
1826 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1827 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1828 if (addr) {
1829 addr->u.a4.addr = ifa->ifa_address;
1830 addr->u.a4.mask = ifa->ifa_mask;
1831 addr->type = QETH_IP_TYPE_NORMAL;
1832 if (!qeth_l3_delete_ip(card, addr))
1833 kfree(addr);
1834 }
1835 }
1836 in_dev_put(in_dev);
1837 }
1838
qeth_l3_free_vlan_addresses6(struct qeth_card * card,unsigned short vid)1839 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1840 unsigned short vid)
1841 {
1842 #ifdef CONFIG_QETH_IPV6
1843 struct inet6_dev *in6_dev;
1844 struct inet6_ifaddr *ifa;
1845 struct qeth_ipaddr *addr;
1846 struct net_device *netdev;
1847
1848 QETH_CARD_TEXT(card, 4, "frvaddr6");
1849
1850 netdev = __vlan_find_dev_deep(card->dev, vid);
1851 if (!netdev)
1852 return;
1853 in6_dev = in6_dev_get(netdev);
1854 if (!in6_dev)
1855 return;
1856 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1857 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1858 if (addr) {
1859 memcpy(&addr->u.a6.addr, &ifa->addr,
1860 sizeof(struct in6_addr));
1861 addr->u.a6.pfxlen = ifa->prefix_len;
1862 addr->type = QETH_IP_TYPE_NORMAL;
1863 if (!qeth_l3_delete_ip(card, addr))
1864 kfree(addr);
1865 }
1866 }
1867 in6_dev_put(in6_dev);
1868 #endif /* CONFIG_QETH_IPV6 */
1869 }
1870
qeth_l3_free_vlan_addresses(struct qeth_card * card,unsigned short vid)1871 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1872 unsigned short vid)
1873 {
1874 qeth_l3_free_vlan_addresses4(card, vid);
1875 qeth_l3_free_vlan_addresses6(card, vid);
1876 }
1877
qeth_l3_vlan_rx_add_vid(struct net_device * dev,unsigned short vid)1878 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1879 {
1880 struct qeth_card *card = dev->ml_priv;
1881
1882 set_bit(vid, card->active_vlans);
1883 return 0;
1884 }
1885
qeth_l3_vlan_rx_kill_vid(struct net_device * dev,unsigned short vid)1886 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1887 {
1888 struct qeth_card *card = dev->ml_priv;
1889 unsigned long flags;
1890
1891 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1892 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1893 QETH_CARD_TEXT(card, 3, "kidREC");
1894 return 0;
1895 }
1896 spin_lock_irqsave(&card->vlanlock, flags);
1897 /* unregister IP addresses of vlan device */
1898 qeth_l3_free_vlan_addresses(card, vid);
1899 clear_bit(vid, card->active_vlans);
1900 spin_unlock_irqrestore(&card->vlanlock, flags);
1901 qeth_l3_set_multicast_list(card->dev);
1902 return 0;
1903 }
1904
qeth_l3_rebuild_skb(struct qeth_card * card,struct sk_buff * skb,struct qeth_hdr * hdr,unsigned short * vlan_id)1905 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1906 struct sk_buff *skb, struct qeth_hdr *hdr,
1907 unsigned short *vlan_id)
1908 {
1909 __be16 prot;
1910 struct iphdr *ip_hdr;
1911 unsigned char tg_addr[MAX_ADDR_LEN];
1912 int is_vlan = 0;
1913
1914 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1915 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1916 ETH_P_IP);
1917 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1918 case QETH_CAST_MULTICAST:
1919 switch (prot) {
1920 #ifdef CONFIG_QETH_IPV6
1921 case __constant_htons(ETH_P_IPV6):
1922 ndisc_mc_map((struct in6_addr *)
1923 skb->data + 24,
1924 tg_addr, card->dev, 0);
1925 break;
1926 #endif
1927 case __constant_htons(ETH_P_IP):
1928 ip_hdr = (struct iphdr *)skb->data;
1929 (card->dev->type == ARPHRD_IEEE802_TR) ?
1930 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1931 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1932 break;
1933 default:
1934 memcpy(tg_addr, card->dev->broadcast,
1935 card->dev->addr_len);
1936 }
1937 card->stats.multicast++;
1938 skb->pkt_type = PACKET_MULTICAST;
1939 break;
1940 case QETH_CAST_BROADCAST:
1941 memcpy(tg_addr, card->dev->broadcast,
1942 card->dev->addr_len);
1943 card->stats.multicast++;
1944 skb->pkt_type = PACKET_BROADCAST;
1945 break;
1946 case QETH_CAST_UNICAST:
1947 case QETH_CAST_ANYCAST:
1948 case QETH_CAST_NOCAST:
1949 default:
1950 if (card->options.sniffer)
1951 skb->pkt_type = PACKET_OTHERHOST;
1952 else
1953 skb->pkt_type = PACKET_HOST;
1954 memcpy(tg_addr, card->dev->dev_addr,
1955 card->dev->addr_len);
1956 }
1957 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1958 card->dev->header_ops->create(skb, card->dev, prot,
1959 tg_addr, &hdr->hdr.l3.dest_addr[2],
1960 card->dev->addr_len);
1961 else
1962 card->dev->header_ops->create(skb, card->dev, prot,
1963 tg_addr, "FAKELL", card->dev->addr_len);
1964 }
1965
1966 #ifdef CONFIG_TR
1967 if (card->dev->type == ARPHRD_IEEE802_TR)
1968 skb->protocol = tr_type_trans(skb, card->dev);
1969 else
1970 #endif
1971 skb->protocol = eth_type_trans(skb, card->dev);
1972
1973 if (hdr->hdr.l3.ext_flags &
1974 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1975 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1976 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1977 is_vlan = 1;
1978 }
1979
1980 if (card->dev->features & NETIF_F_RXCSUM) {
1981 if ((hdr->hdr.l3.ext_flags &
1982 (QETH_HDR_EXT_CSUM_HDR_REQ |
1983 QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1984 (QETH_HDR_EXT_CSUM_HDR_REQ |
1985 QETH_HDR_EXT_CSUM_TRANSP_REQ))
1986 skb->ip_summed = CHECKSUM_UNNECESSARY;
1987 else
1988 skb->ip_summed = CHECKSUM_NONE;
1989 } else
1990 skb->ip_summed = CHECKSUM_NONE;
1991
1992 return is_vlan;
1993 }
1994
qeth_l3_process_inbound_buffer(struct qeth_card * card,int budget,int * done)1995 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1996 int budget, int *done)
1997 {
1998 int work_done = 0;
1999 struct sk_buff *skb;
2000 struct qeth_hdr *hdr;
2001 __u16 vlan_tag = 0;
2002 int is_vlan;
2003 unsigned int len;
2004 __u16 magic;
2005
2006 *done = 0;
2007 BUG_ON(!budget);
2008 while (budget) {
2009 skb = qeth_core_get_next_skb(card,
2010 &card->qdio.in_q->bufs[card->rx.b_index],
2011 &card->rx.b_element, &card->rx.e_offset, &hdr);
2012 if (!skb) {
2013 *done = 1;
2014 break;
2015 }
2016 skb->dev = card->dev;
2017 switch (hdr->hdr.l3.id) {
2018 case QETH_HEADER_TYPE_LAYER3:
2019 magic = *(__u16 *)skb->data;
2020 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2021 (magic == ETH_P_AF_IUCV)) {
2022 skb->protocol = ETH_P_AF_IUCV;
2023 skb->pkt_type = PACKET_HOST;
2024 skb->mac_header = NET_SKB_PAD;
2025 skb->dev = card->dev;
2026 len = skb->len;
2027 card->dev->header_ops->create(skb, card->dev, 0,
2028 card->dev->dev_addr, "FAKELL",
2029 card->dev->addr_len);
2030 netif_receive_skb(skb);
2031 } else {
2032 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2033 &vlan_tag);
2034 len = skb->len;
2035 if (is_vlan && !card->options.sniffer)
2036 __vlan_hwaccel_put_tag(skb, vlan_tag);
2037 napi_gro_receive(&card->napi, skb);
2038 }
2039 break;
2040 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2041 skb->pkt_type = PACKET_HOST;
2042 skb->protocol = eth_type_trans(skb, skb->dev);
2043 len = skb->len;
2044 netif_receive_skb(skb);
2045 break;
2046 default:
2047 dev_kfree_skb_any(skb);
2048 QETH_CARD_TEXT(card, 3, "inbunkno");
2049 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2050 continue;
2051 }
2052 work_done++;
2053 budget--;
2054 card->stats.rx_packets++;
2055 card->stats.rx_bytes += len;
2056 }
2057 return work_done;
2058 }
2059
qeth_l3_poll(struct napi_struct * napi,int budget)2060 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2061 {
2062 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2063 int work_done = 0;
2064 struct qeth_qdio_buffer *buffer;
2065 int done;
2066 int new_budget = budget;
2067
2068 if (card->options.performance_stats) {
2069 card->perf_stats.inbound_cnt++;
2070 card->perf_stats.inbound_start_time = qeth_get_micros();
2071 }
2072
2073 while (1) {
2074 if (!card->rx.b_count) {
2075 card->rx.qdio_err = 0;
2076 card->rx.b_count = qdio_get_next_buffers(
2077 card->data.ccwdev, 0, &card->rx.b_index,
2078 &card->rx.qdio_err);
2079 if (card->rx.b_count <= 0) {
2080 card->rx.b_count = 0;
2081 break;
2082 }
2083 card->rx.b_element =
2084 &card->qdio.in_q->bufs[card->rx.b_index]
2085 .buffer->element[0];
2086 card->rx.e_offset = 0;
2087 }
2088
2089 while (card->rx.b_count) {
2090 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2091 if (!(card->rx.qdio_err &&
2092 qeth_check_qdio_errors(card, buffer->buffer,
2093 card->rx.qdio_err, "qinerr")))
2094 work_done += qeth_l3_process_inbound_buffer(
2095 card, new_budget, &done);
2096 else
2097 done = 1;
2098
2099 if (done) {
2100 if (card->options.performance_stats)
2101 card->perf_stats.bufs_rec++;
2102 qeth_put_buffer_pool_entry(card,
2103 buffer->pool_entry);
2104 qeth_queue_input_buffer(card, card->rx.b_index);
2105 card->rx.b_count--;
2106 if (card->rx.b_count) {
2107 card->rx.b_index =
2108 (card->rx.b_index + 1) %
2109 QDIO_MAX_BUFFERS_PER_Q;
2110 card->rx.b_element =
2111 &card->qdio.in_q
2112 ->bufs[card->rx.b_index]
2113 .buffer->element[0];
2114 card->rx.e_offset = 0;
2115 }
2116 }
2117
2118 if (work_done >= budget)
2119 goto out;
2120 else
2121 new_budget = budget - work_done;
2122 }
2123 }
2124
2125 napi_complete(napi);
2126 if (qdio_start_irq(card->data.ccwdev, 0))
2127 napi_schedule(&card->napi);
2128 out:
2129 if (card->options.performance_stats)
2130 card->perf_stats.inbound_time += qeth_get_micros() -
2131 card->perf_stats.inbound_start_time;
2132 return work_done;
2133 }
2134
qeth_l3_verify_vlan_dev(struct net_device * dev,struct qeth_card * card)2135 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2136 struct qeth_card *card)
2137 {
2138 int rc = 0;
2139 u16 vid;
2140
2141 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2142 struct net_device *netdev;
2143
2144 rcu_read_lock();
2145 netdev = __vlan_find_dev_deep(dev, vid);
2146 rcu_read_unlock();
2147 if (netdev == dev) {
2148 rc = QETH_VLAN_CARD;
2149 break;
2150 }
2151 }
2152
2153 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2154 return 0;
2155
2156 return rc;
2157 }
2158
qeth_l3_verify_dev(struct net_device * dev)2159 static int qeth_l3_verify_dev(struct net_device *dev)
2160 {
2161 struct qeth_card *card;
2162 unsigned long flags;
2163 int rc = 0;
2164
2165 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2166 list_for_each_entry(card, &qeth_core_card_list.list, list) {
2167 if (card->dev == dev) {
2168 rc = QETH_REAL_CARD;
2169 break;
2170 }
2171 rc = qeth_l3_verify_vlan_dev(dev, card);
2172 if (rc)
2173 break;
2174 }
2175 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2176
2177 return rc;
2178 }
2179
qeth_l3_get_card_from_dev(struct net_device * dev)2180 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2181 {
2182 struct qeth_card *card = NULL;
2183 int rc;
2184
2185 rc = qeth_l3_verify_dev(dev);
2186 if (rc == QETH_REAL_CARD)
2187 card = dev->ml_priv;
2188 else if (rc == QETH_VLAN_CARD)
2189 card = vlan_dev_real_dev(dev)->ml_priv;
2190 if (card && card->options.layer2)
2191 card = NULL;
2192 if (card)
2193 QETH_CARD_TEXT_(card, 4, "%d", rc);
2194 return card ;
2195 }
2196
qeth_l3_stop_card(struct qeth_card * card,int recovery_mode)2197 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2198 {
2199 int rc = 0;
2200
2201 QETH_DBF_TEXT(SETUP, 2, "stopcard");
2202 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2203
2204 qeth_set_allowed_threads(card, 0, 1);
2205 if (card->options.sniffer &&
2206 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2207 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2208 if (card->read.state == CH_STATE_UP &&
2209 card->write.state == CH_STATE_UP &&
2210 (card->state == CARD_STATE_UP)) {
2211 if (recovery_mode)
2212 qeth_l3_stop(card->dev);
2213 else {
2214 rtnl_lock();
2215 dev_close(card->dev);
2216 rtnl_unlock();
2217 }
2218 card->state = CARD_STATE_SOFTSETUP;
2219 }
2220 if (card->state == CARD_STATE_SOFTSETUP) {
2221 qeth_l3_clear_ip_list(card, 1);
2222 qeth_clear_ipacmd_list(card);
2223 card->state = CARD_STATE_HARDSETUP;
2224 }
2225 if (card->state == CARD_STATE_HARDSETUP) {
2226 qeth_qdio_clear_card(card, 0);
2227 qeth_clear_qdio_buffers(card);
2228 qeth_clear_working_pool_list(card);
2229 card->state = CARD_STATE_DOWN;
2230 }
2231 if (card->state == CARD_STATE_DOWN) {
2232 qeth_clear_cmd_buffers(&card->read);
2233 qeth_clear_cmd_buffers(&card->write);
2234 }
2235 return rc;
2236 }
2237
2238 /*
2239 * test for and Switch promiscuous mode (on or off)
2240 * either for guestlan or HiperSocket Sniffer
2241 */
2242 static void
qeth_l3_handle_promisc_mode(struct qeth_card * card)2243 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2244 {
2245 struct net_device *dev = card->dev;
2246
2247 if (((dev->flags & IFF_PROMISC) &&
2248 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2249 (!(dev->flags & IFF_PROMISC) &&
2250 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2251 return;
2252
2253 if (card->info.guestlan) { /* Guestlan trace */
2254 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2255 qeth_setadp_promisc_mode(card);
2256 } else if (card->options.sniffer && /* HiperSockets trace */
2257 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2258 if (dev->flags & IFF_PROMISC) {
2259 QETH_CARD_TEXT(card, 3, "+promisc");
2260 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2261 } else {
2262 QETH_CARD_TEXT(card, 3, "-promisc");
2263 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2264 }
2265 }
2266 }
2267
qeth_l3_set_multicast_list(struct net_device * dev)2268 static void qeth_l3_set_multicast_list(struct net_device *dev)
2269 {
2270 struct qeth_card *card = dev->ml_priv;
2271
2272 QETH_CARD_TEXT(card, 3, "setmulti");
2273 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2274 (card->state != CARD_STATE_UP))
2275 return;
2276 if (!card->options.sniffer) {
2277 qeth_l3_delete_mc_addresses(card);
2278 qeth_l3_add_multicast_ipv4(card);
2279 #ifdef CONFIG_QETH_IPV6
2280 qeth_l3_add_multicast_ipv6(card);
2281 #endif
2282 qeth_l3_set_ip_addr_list(card);
2283 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2284 return;
2285 }
2286 qeth_l3_handle_promisc_mode(card);
2287 }
2288
qeth_l3_arp_get_error_cause(int * rc)2289 static const char *qeth_l3_arp_get_error_cause(int *rc)
2290 {
2291 switch (*rc) {
2292 case QETH_IPA_ARP_RC_FAILED:
2293 *rc = -EIO;
2294 return "operation failed";
2295 case QETH_IPA_ARP_RC_NOTSUPP:
2296 *rc = -EOPNOTSUPP;
2297 return "operation not supported";
2298 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2299 *rc = -EINVAL;
2300 return "argument out of range";
2301 case QETH_IPA_ARP_RC_Q_NOTSUPP:
2302 *rc = -EOPNOTSUPP;
2303 return "query operation not supported";
2304 case QETH_IPA_ARP_RC_Q_NO_DATA:
2305 *rc = -ENOENT;
2306 return "no query data available";
2307 default:
2308 return "unknown error";
2309 }
2310 }
2311
qeth_l3_arp_set_no_entries(struct qeth_card * card,int no_entries)2312 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2313 {
2314 int tmp;
2315 int rc;
2316
2317 QETH_CARD_TEXT(card, 3, "arpstnoe");
2318
2319 /*
2320 * currently GuestLAN only supports the ARP assist function
2321 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2322 * thus we say EOPNOTSUPP for this ARP function
2323 */
2324 if (card->info.guestlan)
2325 return -EOPNOTSUPP;
2326 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2327 return -EOPNOTSUPP;
2328 }
2329 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2330 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2331 no_entries);
2332 if (rc) {
2333 tmp = rc;
2334 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2335 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2336 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2337 }
2338 return rc;
2339 }
2340
get_arp_entry_size(struct qeth_card * card,struct qeth_arp_query_data * qdata,struct qeth_arp_entrytype * type,__u8 strip_entries)2341 static __u32 get_arp_entry_size(struct qeth_card *card,
2342 struct qeth_arp_query_data *qdata,
2343 struct qeth_arp_entrytype *type, __u8 strip_entries)
2344 {
2345 __u32 rc;
2346 __u8 is_hsi;
2347
2348 is_hsi = qdata->reply_bits == 5;
2349 if (type->ip == QETHARP_IP_ADDR_V4) {
2350 QETH_CARD_TEXT(card, 4, "arpev4");
2351 if (strip_entries) {
2352 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2353 sizeof(struct qeth_arp_qi_entry7_short);
2354 } else {
2355 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2356 sizeof(struct qeth_arp_qi_entry7);
2357 }
2358 } else if (type->ip == QETHARP_IP_ADDR_V6) {
2359 QETH_CARD_TEXT(card, 4, "arpev6");
2360 if (strip_entries) {
2361 rc = is_hsi ?
2362 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2363 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2364 } else {
2365 rc = is_hsi ?
2366 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2367 sizeof(struct qeth_arp_qi_entry7_ipv6);
2368 }
2369 } else {
2370 QETH_CARD_TEXT(card, 4, "arpinv");
2371 rc = 0;
2372 }
2373
2374 return rc;
2375 }
2376
arpentry_matches_prot(struct qeth_arp_entrytype * type,__u16 prot)2377 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2378 {
2379 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2380 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2381 }
2382
qeth_l3_arp_query_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2383 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2384 struct qeth_reply *reply, unsigned long data)
2385 {
2386 struct qeth_ipa_cmd *cmd;
2387 struct qeth_arp_query_data *qdata;
2388 struct qeth_arp_query_info *qinfo;
2389 int i;
2390 int e;
2391 int entrybytes_done;
2392 int stripped_bytes;
2393 __u8 do_strip_entries;
2394
2395 QETH_CARD_TEXT(card, 3, "arpquecb");
2396
2397 qinfo = (struct qeth_arp_query_info *) reply->param;
2398 cmd = (struct qeth_ipa_cmd *) data;
2399 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2400 if (cmd->hdr.return_code) {
2401 QETH_CARD_TEXT(card, 4, "arpcberr");
2402 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2403 return 0;
2404 }
2405 if (cmd->data.setassparms.hdr.return_code) {
2406 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2407 QETH_CARD_TEXT(card, 4, "setaperr");
2408 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2409 return 0;
2410 }
2411 qdata = &cmd->data.setassparms.data.query_arp;
2412 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2413
2414 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2415 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2416 entrybytes_done = 0;
2417 for (e = 0; e < qdata->no_entries; ++e) {
2418 char *cur_entry;
2419 __u32 esize;
2420 struct qeth_arp_entrytype *etype;
2421
2422 cur_entry = &qdata->data + entrybytes_done;
2423 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2424 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2425 QETH_CARD_TEXT(card, 4, "pmis");
2426 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2427 break;
2428 }
2429 esize = get_arp_entry_size(card, qdata, etype,
2430 do_strip_entries);
2431 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2432 if (!esize)
2433 break;
2434
2435 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2436 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2437 cmd->hdr.return_code = IPA_RC_ENOMEM;
2438 goto out_error;
2439 }
2440
2441 memcpy(qinfo->udata + qinfo->udata_offset,
2442 &qdata->data + entrybytes_done + stripped_bytes,
2443 esize);
2444 entrybytes_done += esize + stripped_bytes;
2445 qinfo->udata_offset += esize;
2446 ++qinfo->no_entries;
2447 }
2448 /* check if all replies received ... */
2449 if (cmd->data.setassparms.hdr.seq_no <
2450 cmd->data.setassparms.hdr.number_of_replies)
2451 return 1;
2452 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2453 memcpy(qinfo->udata, &qinfo->no_entries, 4);
2454 /* keep STRIP_ENTRIES flag so the user program can distinguish
2455 * stripped entries from normal ones */
2456 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2457 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2458 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2459 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2460 return 0;
2461 out_error:
2462 i = 0;
2463 memcpy(qinfo->udata, &i, 4);
2464 return 0;
2465 }
2466
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)2467 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2468 struct qeth_cmd_buffer *iob, int len,
2469 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2470 unsigned long),
2471 void *reply_param)
2472 {
2473 QETH_CARD_TEXT(card, 4, "sendarp");
2474
2475 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2476 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2477 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2478 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2479 reply_cb, reply_param);
2480 }
2481
qeth_l3_query_arp_cache_info(struct qeth_card * card,enum qeth_prot_versions prot,struct qeth_arp_query_info * qinfo)2482 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2483 enum qeth_prot_versions prot,
2484 struct qeth_arp_query_info *qinfo)
2485 {
2486 struct qeth_cmd_buffer *iob;
2487 struct qeth_ipa_cmd *cmd;
2488 int tmp;
2489 int rc;
2490
2491 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2492
2493 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2494 IPA_CMD_ASS_ARP_QUERY_INFO,
2495 sizeof(struct qeth_arp_query_data) - sizeof(char),
2496 prot);
2497 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2498 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2499 cmd->data.setassparms.data.query_arp.reply_bits = 0;
2500 cmd->data.setassparms.data.query_arp.no_entries = 0;
2501 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2502 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2503 qeth_l3_arp_query_cb, (void *)qinfo);
2504 if (rc) {
2505 tmp = rc;
2506 QETH_DBF_MESSAGE(2,
2507 "Error while querying ARP cache on %s: %s "
2508 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2509 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2510 }
2511
2512 return rc;
2513 }
2514
qeth_l3_arp_query(struct qeth_card * card,char __user * udata)2515 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2516 {
2517 struct qeth_arp_query_info qinfo = {0, };
2518 int rc;
2519
2520 QETH_CARD_TEXT(card, 3, "arpquery");
2521
2522 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2523 IPA_ARP_PROCESSING)) {
2524 QETH_CARD_TEXT(card, 3, "arpqnsup");
2525 rc = -EOPNOTSUPP;
2526 goto out;
2527 }
2528 /* get size of userspace buffer and mask_bits -> 6 bytes */
2529 if (copy_from_user(&qinfo, udata, 6)) {
2530 rc = -EFAULT;
2531 goto out;
2532 }
2533 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2534 if (!qinfo.udata) {
2535 rc = -ENOMEM;
2536 goto out;
2537 }
2538 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2539 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2540 if (rc) {
2541 if (copy_to_user(udata, qinfo.udata, 4))
2542 rc = -EFAULT;
2543 goto free_and_out;
2544 } else {
2545 #ifdef CONFIG_QETH_IPV6
2546 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2547 /* fails in case of GuestLAN QDIO mode */
2548 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2549 &qinfo);
2550 }
2551 #endif
2552 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2553 QETH_CARD_TEXT(card, 4, "qactf");
2554 rc = -EFAULT;
2555 goto free_and_out;
2556 }
2557 QETH_CARD_TEXT_(card, 4, "qacts");
2558 }
2559 free_and_out:
2560 kfree(qinfo.udata);
2561 out:
2562 return rc;
2563 }
2564
qeth_l3_arp_add_entry(struct qeth_card * card,struct qeth_arp_cache_entry * entry)2565 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2566 struct qeth_arp_cache_entry *entry)
2567 {
2568 struct qeth_cmd_buffer *iob;
2569 char buf[16];
2570 int tmp;
2571 int rc;
2572
2573 QETH_CARD_TEXT(card, 3, "arpadent");
2574
2575 /*
2576 * currently GuestLAN only supports the ARP assist function
2577 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2578 * thus we say EOPNOTSUPP for this ARP function
2579 */
2580 if (card->info.guestlan)
2581 return -EOPNOTSUPP;
2582 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2583 return -EOPNOTSUPP;
2584 }
2585
2586 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2587 IPA_CMD_ASS_ARP_ADD_ENTRY,
2588 sizeof(struct qeth_arp_cache_entry),
2589 QETH_PROT_IPV4);
2590 rc = qeth_l3_send_setassparms(card, iob,
2591 sizeof(struct qeth_arp_cache_entry),
2592 (unsigned long) entry,
2593 qeth_l3_default_setassparms_cb, NULL);
2594 if (rc) {
2595 tmp = rc;
2596 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2597 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2598 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2599 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2600 }
2601 return rc;
2602 }
2603
qeth_l3_arp_remove_entry(struct qeth_card * card,struct qeth_arp_cache_entry * entry)2604 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2605 struct qeth_arp_cache_entry *entry)
2606 {
2607 struct qeth_cmd_buffer *iob;
2608 char buf[16] = {0, };
2609 int tmp;
2610 int rc;
2611
2612 QETH_CARD_TEXT(card, 3, "arprment");
2613
2614 /*
2615 * currently GuestLAN only supports the ARP assist function
2616 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2617 * thus we say EOPNOTSUPP for this ARP function
2618 */
2619 if (card->info.guestlan)
2620 return -EOPNOTSUPP;
2621 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2622 return -EOPNOTSUPP;
2623 }
2624 memcpy(buf, entry, 12);
2625 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2626 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2627 12,
2628 QETH_PROT_IPV4);
2629 rc = qeth_l3_send_setassparms(card, iob,
2630 12, (unsigned long)buf,
2631 qeth_l3_default_setassparms_cb, NULL);
2632 if (rc) {
2633 tmp = rc;
2634 memset(buf, 0, 16);
2635 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2636 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2637 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2638 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2639 }
2640 return rc;
2641 }
2642
qeth_l3_arp_flush_cache(struct qeth_card * card)2643 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2644 {
2645 int rc;
2646 int tmp;
2647
2648 QETH_CARD_TEXT(card, 3, "arpflush");
2649
2650 /*
2651 * currently GuestLAN only supports the ARP assist function
2652 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2653 * thus we say EOPNOTSUPP for this ARP function
2654 */
2655 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2656 return -EOPNOTSUPP;
2657 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2658 return -EOPNOTSUPP;
2659 }
2660 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2661 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2662 if (rc) {
2663 tmp = rc;
2664 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2665 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2666 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2667 }
2668 return rc;
2669 }
2670
qeth_l3_do_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)2671 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2672 {
2673 struct qeth_card *card = dev->ml_priv;
2674 struct qeth_arp_cache_entry arp_entry;
2675 struct mii_ioctl_data *mii_data;
2676 int rc = 0;
2677
2678 if (!card)
2679 return -ENODEV;
2680
2681 if ((card->state != CARD_STATE_UP) &&
2682 (card->state != CARD_STATE_SOFTSETUP))
2683 return -ENODEV;
2684
2685 switch (cmd) {
2686 case SIOC_QETH_ARP_SET_NO_ENTRIES:
2687 if (!capable(CAP_NET_ADMIN)) {
2688 rc = -EPERM;
2689 break;
2690 }
2691 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2692 break;
2693 case SIOC_QETH_ARP_QUERY_INFO:
2694 if (!capable(CAP_NET_ADMIN)) {
2695 rc = -EPERM;
2696 break;
2697 }
2698 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2699 break;
2700 case SIOC_QETH_ARP_ADD_ENTRY:
2701 if (!capable(CAP_NET_ADMIN)) {
2702 rc = -EPERM;
2703 break;
2704 }
2705 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2706 sizeof(struct qeth_arp_cache_entry)))
2707 rc = -EFAULT;
2708 else
2709 rc = qeth_l3_arp_add_entry(card, &arp_entry);
2710 break;
2711 case SIOC_QETH_ARP_REMOVE_ENTRY:
2712 if (!capable(CAP_NET_ADMIN)) {
2713 rc = -EPERM;
2714 break;
2715 }
2716 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2717 sizeof(struct qeth_arp_cache_entry)))
2718 rc = -EFAULT;
2719 else
2720 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2721 break;
2722 case SIOC_QETH_ARP_FLUSH_CACHE:
2723 if (!capable(CAP_NET_ADMIN)) {
2724 rc = -EPERM;
2725 break;
2726 }
2727 rc = qeth_l3_arp_flush_cache(card);
2728 break;
2729 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2730 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2731 break;
2732 case SIOC_QETH_GET_CARD_TYPE:
2733 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2734 card->info.type == QETH_CARD_TYPE_OSX) &&
2735 !card->info.guestlan)
2736 return 1;
2737 return 0;
2738 break;
2739 case SIOCGMIIPHY:
2740 mii_data = if_mii(rq);
2741 mii_data->phy_id = 0;
2742 break;
2743 case SIOCGMIIREG:
2744 mii_data = if_mii(rq);
2745 if (mii_data->phy_id != 0)
2746 rc = -EINVAL;
2747 else
2748 mii_data->val_out = qeth_mdio_read(dev,
2749 mii_data->phy_id,
2750 mii_data->reg_num);
2751 break;
2752 case SIOC_QETH_QUERY_OAT:
2753 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2754 break;
2755 default:
2756 rc = -EOPNOTSUPP;
2757 }
2758 if (rc)
2759 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2760 return rc;
2761 }
2762
qeth_l3_get_cast_type(struct qeth_card * card,struct sk_buff * skb)2763 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2764 {
2765 int cast_type = RTN_UNSPEC;
2766 struct neighbour *n = NULL;
2767 struct dst_entry *dst;
2768
2769 rcu_read_lock();
2770 dst = skb_dst(skb);
2771 if (dst)
2772 n = dst_get_neighbour_noref(dst);
2773 if (n) {
2774 cast_type = n->type;
2775 rcu_read_unlock();
2776 if ((cast_type == RTN_BROADCAST) ||
2777 (cast_type == RTN_MULTICAST) ||
2778 (cast_type == RTN_ANYCAST))
2779 return cast_type;
2780 else
2781 return RTN_UNSPEC;
2782 }
2783 rcu_read_unlock();
2784
2785 /* try something else */
2786 if (skb->protocol == ETH_P_IPV6)
2787 return (skb_network_header(skb)[24] == 0xff) ?
2788 RTN_MULTICAST : 0;
2789 else if (skb->protocol == ETH_P_IP)
2790 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2791 RTN_MULTICAST : 0;
2792 /* ... */
2793 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2794 return RTN_BROADCAST;
2795 else {
2796 u16 hdr_mac;
2797
2798 hdr_mac = *((u16 *)skb->data);
2799 /* tr multicast? */
2800 switch (card->info.link_type) {
2801 case QETH_LINK_TYPE_HSTR:
2802 case QETH_LINK_TYPE_LANE_TR:
2803 if ((hdr_mac == QETH_TR_MAC_NC) ||
2804 (hdr_mac == QETH_TR_MAC_C))
2805 return RTN_MULTICAST;
2806 break;
2807 /* eth or so multicast? */
2808 default:
2809 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2810 (hdr_mac == QETH_ETH_MAC_V6))
2811 return RTN_MULTICAST;
2812 }
2813 }
2814 return cast_type;
2815 }
2816
qeth_l3_fill_af_iucv_hdr(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb)2817 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2818 struct qeth_hdr *hdr, struct sk_buff *skb)
2819 {
2820 char daddr[16];
2821 struct af_iucv_trans_hdr *iucv_hdr;
2822
2823 skb_pull(skb, 14);
2824 card->dev->header_ops->create(skb, card->dev, 0,
2825 card->dev->dev_addr, card->dev->dev_addr,
2826 card->dev->addr_len);
2827 skb_pull(skb, 14);
2828 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2829 memset(hdr, 0, sizeof(struct qeth_hdr));
2830 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2831 hdr->hdr.l3.ext_flags = 0;
2832 hdr->hdr.l3.length = skb->len;
2833 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2834 memset(daddr, 0, sizeof(daddr));
2835 daddr[0] = 0xfe;
2836 daddr[1] = 0x80;
2837 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2838 memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2839 }
2840
qeth_l3_fill_header(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb,int ipv,int cast_type)2841 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2842 struct sk_buff *skb, int ipv, int cast_type)
2843 {
2844 struct dst_entry *dst;
2845
2846 memset(hdr, 0, sizeof(struct qeth_hdr));
2847 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2848 hdr->hdr.l3.ext_flags = 0;
2849
2850 /*
2851 * before we're going to overwrite this location with next hop ip.
2852 * v6 uses passthrough, v4 sets the tag in the QDIO header.
2853 */
2854 if (vlan_tx_tag_present(skb)) {
2855 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2856 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2857 else
2858 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2859 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2860 }
2861
2862 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2863
2864 rcu_read_lock();
2865 dst = skb_dst(skb);
2866 if (ipv == 4) {
2867 struct rtable *rt = (struct rtable *) dst;
2868 __be32 *pkey = &ip_hdr(skb)->daddr;
2869
2870 if (rt->rt_gateway)
2871 pkey = &rt->rt_gateway;
2872
2873 /* IPv4 */
2874 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2875 memset(hdr->hdr.l3.dest_addr, 0, 12);
2876 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2877 } else if (ipv == 6) {
2878 struct rt6_info *rt = (struct rt6_info *) dst;
2879 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2880
2881 if (!ipv6_addr_any(&rt->rt6i_gateway))
2882 pkey = &rt->rt6i_gateway;
2883
2884 /* IPv6 */
2885 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2886 if (card->info.type == QETH_CARD_TYPE_IQD)
2887 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2888 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2889 } else {
2890 /* passthrough */
2891 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2892 !memcmp(skb->data + sizeof(struct qeth_hdr) +
2893 sizeof(__u16), skb->dev->broadcast, 6)) {
2894 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2895 QETH_HDR_PASSTHRU;
2896 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2897 skb->dev->broadcast, 6)) {
2898 /* broadcast? */
2899 hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2900 QETH_HDR_PASSTHRU;
2901 } else {
2902 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2903 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2904 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2905 }
2906 }
2907 rcu_read_unlock();
2908 }
2909
qeth_l3_hdr_csum(struct qeth_card * card,struct qeth_hdr * hdr,struct sk_buff * skb)2910 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2911 struct qeth_hdr *hdr, struct sk_buff *skb)
2912 {
2913 struct iphdr *iph = ip_hdr(skb);
2914
2915 /* tcph->check contains already the pseudo hdr checksum
2916 * so just set the header flags
2917 */
2918 if (iph->protocol == IPPROTO_UDP)
2919 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2920 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2921 QETH_HDR_EXT_CSUM_HDR_REQ;
2922 iph->check = 0;
2923 if (card->options.performance_stats)
2924 card->perf_stats.tx_csum++;
2925 }
2926
qeth_tso_fill_header(struct qeth_card * card,struct qeth_hdr * qhdr,struct sk_buff * skb)2927 static void qeth_tso_fill_header(struct qeth_card *card,
2928 struct qeth_hdr *qhdr, struct sk_buff *skb)
2929 {
2930 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2931 struct tcphdr *tcph = tcp_hdr(skb);
2932 struct iphdr *iph = ip_hdr(skb);
2933 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2934
2935 /*fix header to TSO values ...*/
2936 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2937 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2938 /*set values which are fix for the first approach ...*/
2939 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2940 hdr->ext.imb_hdr_no = 1;
2941 hdr->ext.hdr_type = 1;
2942 hdr->ext.hdr_version = 1;
2943 hdr->ext.hdr_len = 28;
2944 /*insert non-fix values */
2945 hdr->ext.mss = skb_shinfo(skb)->gso_size;
2946 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2947 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2948 sizeof(struct qeth_hdr_tso));
2949 tcph->check = 0;
2950 if (skb->protocol == ETH_P_IPV6) {
2951 ip6h->payload_len = 0;
2952 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2953 0, IPPROTO_TCP, 0);
2954 } else {
2955 /*OSA want us to set these values ...*/
2956 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2957 0, IPPROTO_TCP, 0);
2958 iph->tot_len = 0;
2959 iph->check = 0;
2960 }
2961 }
2962
qeth_l3_tso_elements(struct sk_buff * skb)2963 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2964 {
2965 unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2966 tcp_hdr(skb)->doff * 4;
2967 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2968 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2969 elements += skb_shinfo(skb)->nr_frags;
2970 return elements;
2971 }
2972
qeth_l3_hard_start_xmit(struct sk_buff * skb,struct net_device * dev)2973 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2974 {
2975 int rc;
2976 u16 *tag;
2977 struct qeth_hdr *hdr = NULL;
2978 int elements_needed = 0;
2979 int elems;
2980 struct qeth_card *card = dev->ml_priv;
2981 struct sk_buff *new_skb = NULL;
2982 int ipv = qeth_get_ip_version(skb);
2983 int cast_type = qeth_l3_get_cast_type(card, skb);
2984 struct qeth_qdio_out_q *queue = card->qdio.out_qs
2985 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2986 int tx_bytes = skb->len;
2987 bool large_send;
2988 int data_offset = -1;
2989 int nr_frags;
2990
2991 if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2992 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2993 ((card->options.cq == QETH_CQ_ENABLED) &&
2994 (skb->protocol != ETH_P_AF_IUCV)))) ||
2995 card->options.sniffer)
2996 goto tx_drop;
2997
2998 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2999 card->stats.tx_carrier_errors++;
3000 goto tx_drop;
3001 }
3002
3003 if ((cast_type == RTN_BROADCAST) &&
3004 (card->info.broadcast_capable == 0))
3005 goto tx_drop;
3006
3007 if (card->options.performance_stats) {
3008 card->perf_stats.outbound_cnt++;
3009 card->perf_stats.outbound_start_time = qeth_get_micros();
3010 }
3011
3012 large_send = skb_is_gso(skb);
3013
3014 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
3015 (skb_shinfo(skb)->nr_frags == 0)) {
3016 new_skb = skb;
3017 if (new_skb->protocol == ETH_P_AF_IUCV)
3018 data_offset = 0;
3019 else
3020 data_offset = ETH_HLEN;
3021 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3022 if (!hdr)
3023 goto tx_drop;
3024 elements_needed++;
3025 } else {
3026 /* create a clone with writeable headroom */
3027 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3028 + VLAN_HLEN);
3029 if (!new_skb)
3030 goto tx_drop;
3031 }
3032
3033 if (card->info.type == QETH_CARD_TYPE_IQD) {
3034 if (data_offset < 0)
3035 skb_pull(new_skb, ETH_HLEN);
3036 } else {
3037 if (ipv == 4) {
3038 if (card->dev->type == ARPHRD_IEEE802_TR)
3039 skb_pull(new_skb, TR_HLEN);
3040 else
3041 skb_pull(new_skb, ETH_HLEN);
3042 }
3043
3044 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
3045 skb_push(new_skb, VLAN_HLEN);
3046 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3047 skb_copy_to_linear_data_offset(new_skb, 4,
3048 new_skb->data + 8, 4);
3049 skb_copy_to_linear_data_offset(new_skb, 8,
3050 new_skb->data + 12, 4);
3051 tag = (u16 *)(new_skb->data + 12);
3052 *tag = __constant_htons(ETH_P_8021Q);
3053 *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3054 }
3055 }
3056
3057 netif_stop_queue(dev);
3058
3059 /* fix hardware limitation: as long as we do not have sbal
3060 * chaining we can not send long frag lists
3061 */
3062 if (large_send) {
3063 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3064 if (skb_linearize(new_skb))
3065 goto tx_drop;
3066 if (card->options.performance_stats)
3067 card->perf_stats.tx_lin++;
3068 }
3069 }
3070
3071 if (large_send && (cast_type == RTN_UNSPEC)) {
3072 hdr = (struct qeth_hdr *)skb_push(new_skb,
3073 sizeof(struct qeth_hdr_tso));
3074 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3075 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3076 qeth_tso_fill_header(card, hdr, new_skb);
3077 elements_needed++;
3078 } else {
3079 if (data_offset < 0) {
3080 hdr = (struct qeth_hdr *)skb_push(new_skb,
3081 sizeof(struct qeth_hdr));
3082 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3083 cast_type);
3084 } else {
3085 if (new_skb->protocol == ETH_P_AF_IUCV)
3086 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3087 else {
3088 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3089 cast_type);
3090 hdr->hdr.l3.length = new_skb->len - data_offset;
3091 }
3092 }
3093
3094 if (skb->ip_summed == CHECKSUM_PARTIAL)
3095 qeth_l3_hdr_csum(card, hdr, new_skb);
3096 }
3097
3098 elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3099 elements_needed);
3100 if (!elems) {
3101 if (data_offset >= 0)
3102 kmem_cache_free(qeth_core_header_cache, hdr);
3103 goto tx_drop;
3104 }
3105 elements_needed += elems;
3106 nr_frags = skb_shinfo(new_skb)->nr_frags;
3107
3108 if (card->info.type != QETH_CARD_TYPE_IQD) {
3109 int len;
3110 if (large_send)
3111 len = ((unsigned long)tcp_hdr(new_skb) +
3112 tcp_hdr(new_skb)->doff * 4) -
3113 (unsigned long)new_skb->data;
3114 else
3115 len = sizeof(struct qeth_hdr_layer3);
3116
3117 if (qeth_hdr_chk_and_bounce(new_skb, len))
3118 goto tx_drop;
3119 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3120 elements_needed);
3121 } else
3122 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3123 elements_needed, data_offset, 0);
3124
3125 if (!rc) {
3126 card->stats.tx_packets++;
3127 card->stats.tx_bytes += tx_bytes;
3128 if (new_skb != skb)
3129 dev_kfree_skb_any(skb);
3130 if (card->options.performance_stats) {
3131 if (large_send) {
3132 card->perf_stats.large_send_bytes += tx_bytes;
3133 card->perf_stats.large_send_cnt++;
3134 }
3135 if (nr_frags) {
3136 card->perf_stats.sg_skbs_sent++;
3137 /* nr_frags + skb->data */
3138 card->perf_stats.sg_frags_sent += nr_frags + 1;
3139 }
3140 }
3141 rc = NETDEV_TX_OK;
3142 } else {
3143 if (data_offset >= 0)
3144 kmem_cache_free(qeth_core_header_cache, hdr);
3145
3146 if (rc == -EBUSY) {
3147 if (new_skb != skb)
3148 dev_kfree_skb_any(new_skb);
3149 return NETDEV_TX_BUSY;
3150 } else
3151 goto tx_drop;
3152 }
3153
3154 netif_wake_queue(dev);
3155 if (card->options.performance_stats)
3156 card->perf_stats.outbound_time += qeth_get_micros() -
3157 card->perf_stats.outbound_start_time;
3158 return rc;
3159
3160 tx_drop:
3161 card->stats.tx_dropped++;
3162 card->stats.tx_errors++;
3163 if ((new_skb != skb) && new_skb)
3164 dev_kfree_skb_any(new_skb);
3165 dev_kfree_skb_any(skb);
3166 netif_wake_queue(dev);
3167 return NETDEV_TX_OK;
3168 }
3169
__qeth_l3_open(struct net_device * dev)3170 static int __qeth_l3_open(struct net_device *dev)
3171 {
3172 struct qeth_card *card = dev->ml_priv;
3173 int rc = 0;
3174
3175 QETH_CARD_TEXT(card, 4, "qethopen");
3176 if (card->state == CARD_STATE_UP)
3177 return rc;
3178 if (card->state != CARD_STATE_SOFTSETUP)
3179 return -ENODEV;
3180 card->data.state = CH_STATE_UP;
3181 card->state = CARD_STATE_UP;
3182 netif_start_queue(dev);
3183
3184 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3185 napi_enable(&card->napi);
3186 napi_schedule(&card->napi);
3187 } else
3188 rc = -EIO;
3189 return rc;
3190 }
3191
qeth_l3_open(struct net_device * dev)3192 static int qeth_l3_open(struct net_device *dev)
3193 {
3194 struct qeth_card *card = dev->ml_priv;
3195
3196 QETH_CARD_TEXT(card, 5, "qethope_");
3197 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3198 QETH_CARD_TEXT(card, 3, "openREC");
3199 return -ERESTARTSYS;
3200 }
3201 return __qeth_l3_open(dev);
3202 }
3203
qeth_l3_stop(struct net_device * dev)3204 static int qeth_l3_stop(struct net_device *dev)
3205 {
3206 struct qeth_card *card = dev->ml_priv;
3207
3208 QETH_CARD_TEXT(card, 4, "qethstop");
3209 netif_tx_disable(dev);
3210 if (card->state == CARD_STATE_UP) {
3211 card->state = CARD_STATE_SOFTSETUP;
3212 napi_disable(&card->napi);
3213 }
3214 return 0;
3215 }
3216
qeth_l3_fix_features(struct net_device * dev,netdev_features_t features)3217 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3218 netdev_features_t features)
3219 {
3220 struct qeth_card *card = dev->ml_priv;
3221
3222 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3223 features &= ~NETIF_F_IP_CSUM;
3224 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3225 features &= ~NETIF_F_TSO;
3226 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3227 features &= ~NETIF_F_RXCSUM;
3228
3229 return features;
3230 }
3231
qeth_l3_set_features(struct net_device * dev,netdev_features_t features)3232 static int qeth_l3_set_features(struct net_device *dev,
3233 netdev_features_t features)
3234 {
3235 struct qeth_card *card = dev->ml_priv;
3236 u32 changed = dev->features ^ features;
3237 int err;
3238
3239 if (!(changed & NETIF_F_RXCSUM))
3240 return 0;
3241
3242 if (card->state == CARD_STATE_DOWN ||
3243 card->state == CARD_STATE_RECOVER)
3244 return 0;
3245
3246 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3247 if (err)
3248 dev->features = features ^ NETIF_F_RXCSUM;
3249
3250 return err;
3251 }
3252
3253 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3254 .get_link = ethtool_op_get_link,
3255 .get_strings = qeth_core_get_strings,
3256 .get_ethtool_stats = qeth_core_get_ethtool_stats,
3257 .get_sset_count = qeth_core_get_sset_count,
3258 .get_drvinfo = qeth_core_get_drvinfo,
3259 .get_settings = qeth_core_ethtool_get_settings,
3260 };
3261
3262 /*
3263 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3264 * NOARP on the netdevice is no option because it also turns off neighbor
3265 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3266 * arp resolution but we want the hard header (packet socket will work
3267 * e.g. tcpdump)
3268 */
qeth_l3_neigh_setup_noarp(struct neighbour * n)3269 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3270 {
3271 n->nud_state = NUD_NOARP;
3272 memcpy(n->ha, "FAKELL", 6);
3273 n->output = n->ops->connected_output;
3274 return 0;
3275 }
3276
3277 static int
qeth_l3_neigh_setup(struct net_device * dev,struct neigh_parms * np)3278 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3279 {
3280 if (np->tbl->family == AF_INET)
3281 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3282
3283 return 0;
3284 }
3285
3286 static const struct net_device_ops qeth_l3_netdev_ops = {
3287 .ndo_open = qeth_l3_open,
3288 .ndo_stop = qeth_l3_stop,
3289 .ndo_get_stats = qeth_get_stats,
3290 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3291 .ndo_validate_addr = eth_validate_addr,
3292 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3293 .ndo_do_ioctl = qeth_l3_do_ioctl,
3294 .ndo_change_mtu = qeth_change_mtu,
3295 .ndo_fix_features = qeth_l3_fix_features,
3296 .ndo_set_features = qeth_l3_set_features,
3297 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3298 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3299 .ndo_tx_timeout = qeth_tx_timeout,
3300 };
3301
3302 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3303 .ndo_open = qeth_l3_open,
3304 .ndo_stop = qeth_l3_stop,
3305 .ndo_get_stats = qeth_get_stats,
3306 .ndo_start_xmit = qeth_l3_hard_start_xmit,
3307 .ndo_validate_addr = eth_validate_addr,
3308 .ndo_set_rx_mode = qeth_l3_set_multicast_list,
3309 .ndo_do_ioctl = qeth_l3_do_ioctl,
3310 .ndo_change_mtu = qeth_change_mtu,
3311 .ndo_fix_features = qeth_l3_fix_features,
3312 .ndo_set_features = qeth_l3_set_features,
3313 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
3314 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
3315 .ndo_tx_timeout = qeth_tx_timeout,
3316 .ndo_neigh_setup = qeth_l3_neigh_setup,
3317 };
3318
qeth_l3_setup_netdev(struct qeth_card * card)3319 static int qeth_l3_setup_netdev(struct qeth_card *card)
3320 {
3321 if (card->info.type == QETH_CARD_TYPE_OSD ||
3322 card->info.type == QETH_CARD_TYPE_OSX) {
3323 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3324 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3325 #ifdef CONFIG_TR
3326 card->dev = alloc_trdev(0);
3327 #endif
3328 if (!card->dev)
3329 return -ENODEV;
3330 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3331 } else {
3332 card->dev = alloc_etherdev(0);
3333 if (!card->dev)
3334 return -ENODEV;
3335 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3336
3337 /*IPv6 address autoconfiguration stuff*/
3338 qeth_l3_get_unique_id(card);
3339 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3340 card->dev->dev_id = card->info.unique_id &
3341 0xffff;
3342 if (!card->info.guestlan) {
3343 card->dev->hw_features = NETIF_F_SG |
3344 NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3345 NETIF_F_TSO;
3346 card->dev->features = NETIF_F_RXCSUM;
3347 }
3348 }
3349 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3350 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3351 if (!card->dev)
3352 return -ENODEV;
3353 card->dev->flags |= IFF_NOARP;
3354 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3355 qeth_l3_iqd_read_initial_mac(card);
3356 if (card->options.hsuid[0])
3357 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3358 } else
3359 return -ENODEV;
3360
3361 card->dev->ml_priv = card;
3362 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3363 card->dev->mtu = card->info.initial_mtu;
3364 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3365 card->dev->features |= NETIF_F_HW_VLAN_TX |
3366 NETIF_F_HW_VLAN_RX |
3367 NETIF_F_HW_VLAN_FILTER;
3368 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3369 card->dev->gso_max_size = 15 * PAGE_SIZE;
3370
3371 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3372 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3373 return register_netdev(card->dev);
3374 }
3375
qeth_l3_probe_device(struct ccwgroup_device * gdev)3376 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3377 {
3378 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3379
3380 qeth_l3_create_device_attributes(&gdev->dev);
3381 card->options.layer2 = 0;
3382 card->info.hwtrap = 0;
3383 card->discipline.start_poll = qeth_qdio_start_poll;
3384 card->discipline.input_handler = (qdio_handler_t *)
3385 qeth_qdio_input_handler;
3386 card->discipline.output_handler = (qdio_handler_t *)
3387 qeth_qdio_output_handler;
3388 card->discipline.recover = qeth_l3_recover;
3389 return 0;
3390 }
3391
qeth_l3_remove_device(struct ccwgroup_device * cgdev)3392 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3393 {
3394 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3395
3396 qeth_l3_remove_device_attributes(&cgdev->dev);
3397
3398 qeth_set_allowed_threads(card, 0, 1);
3399 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3400
3401 if (cgdev->state == CCWGROUP_ONLINE)
3402 qeth_l3_set_offline(cgdev);
3403
3404 if (card->dev) {
3405 unregister_netdev(card->dev);
3406 card->dev = NULL;
3407 }
3408
3409 qeth_l3_clear_ip_list(card, 0);
3410 qeth_l3_clear_ipato_list(card);
3411 return;
3412 }
3413
__qeth_l3_set_online(struct ccwgroup_device * gdev,int recovery_mode)3414 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3415 {
3416 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3417 int rc = 0;
3418 enum qeth_card_states recover_flag;
3419
3420 BUG_ON(!card);
3421 mutex_lock(&card->discipline_mutex);
3422 mutex_lock(&card->conf_mutex);
3423 QETH_DBF_TEXT(SETUP, 2, "setonlin");
3424 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3425
3426 recover_flag = card->state;
3427 rc = qeth_core_hardsetup_card(card);
3428 if (rc) {
3429 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3430 rc = -ENODEV;
3431 goto out_remove;
3432 }
3433
3434 if (!card->dev && qeth_l3_setup_netdev(card)) {
3435 rc = -ENODEV;
3436 goto out_remove;
3437 }
3438
3439 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3440 if (card->info.hwtrap &&
3441 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3442 card->info.hwtrap = 0;
3443 } else
3444 card->info.hwtrap = 0;
3445
3446 card->state = CARD_STATE_HARDSETUP;
3447 memset(&card->rx, 0, sizeof(struct qeth_rx));
3448 qeth_print_status_message(card);
3449
3450 /* softsetup */
3451 QETH_DBF_TEXT(SETUP, 2, "softsetp");
3452
3453 rc = qeth_send_startlan(card);
3454 if (rc) {
3455 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3456 if (rc == 0xe080) {
3457 dev_warn(&card->gdev->dev,
3458 "The LAN is offline\n");
3459 card->lan_online = 0;
3460 goto contin;
3461 }
3462 rc = -ENODEV;
3463 goto out_remove;
3464 } else
3465 card->lan_online = 1;
3466
3467 contin:
3468 rc = qeth_l3_setadapter_parms(card);
3469 if (rc)
3470 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3471 if (!card->options.sniffer) {
3472 rc = qeth_l3_start_ipassists(card);
3473 if (rc)
3474 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3475 rc = qeth_l3_setrouting_v4(card);
3476 if (rc)
3477 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3478 rc = qeth_l3_setrouting_v6(card);
3479 if (rc)
3480 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3481 }
3482 netif_tx_disable(card->dev);
3483
3484 rc = qeth_init_qdio_queues(card);
3485 if (rc) {
3486 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3487 rc = -ENODEV;
3488 goto out_remove;
3489 }
3490 card->state = CARD_STATE_SOFTSETUP;
3491
3492 qeth_set_allowed_threads(card, 0xffffffff, 0);
3493 qeth_l3_set_ip_addr_list(card);
3494 if (card->lan_online)
3495 netif_carrier_on(card->dev);
3496 else
3497 netif_carrier_off(card->dev);
3498 if (recover_flag == CARD_STATE_RECOVER) {
3499 rtnl_lock();
3500 if (recovery_mode)
3501 __qeth_l3_open(card->dev);
3502 else
3503 dev_open(card->dev);
3504 qeth_l3_set_multicast_list(card->dev);
3505 rtnl_unlock();
3506 }
3507 /* let user_space know that device is online */
3508 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3509 mutex_unlock(&card->conf_mutex);
3510 mutex_unlock(&card->discipline_mutex);
3511 return 0;
3512 out_remove:
3513 qeth_l3_stop_card(card, 0);
3514 ccw_device_set_offline(CARD_DDEV(card));
3515 ccw_device_set_offline(CARD_WDEV(card));
3516 ccw_device_set_offline(CARD_RDEV(card));
3517 if (recover_flag == CARD_STATE_RECOVER)
3518 card->state = CARD_STATE_RECOVER;
3519 else
3520 card->state = CARD_STATE_DOWN;
3521 mutex_unlock(&card->conf_mutex);
3522 mutex_unlock(&card->discipline_mutex);
3523 return rc;
3524 }
3525
qeth_l3_set_online(struct ccwgroup_device * gdev)3526 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3527 {
3528 return __qeth_l3_set_online(gdev, 0);
3529 }
3530
__qeth_l3_set_offline(struct ccwgroup_device * cgdev,int recovery_mode)3531 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3532 int recovery_mode)
3533 {
3534 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3535 int rc = 0, rc2 = 0, rc3 = 0;
3536 enum qeth_card_states recover_flag;
3537
3538 mutex_lock(&card->discipline_mutex);
3539 mutex_lock(&card->conf_mutex);
3540 QETH_DBF_TEXT(SETUP, 3, "setoffl");
3541 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3542
3543 if (card->dev && netif_carrier_ok(card->dev))
3544 netif_carrier_off(card->dev);
3545 recover_flag = card->state;
3546 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3547 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3548 card->info.hwtrap = 1;
3549 }
3550 qeth_l3_stop_card(card, recovery_mode);
3551 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3552 rtnl_lock();
3553 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3554 rtnl_unlock();
3555 }
3556 rc = ccw_device_set_offline(CARD_DDEV(card));
3557 rc2 = ccw_device_set_offline(CARD_WDEV(card));
3558 rc3 = ccw_device_set_offline(CARD_RDEV(card));
3559 if (!rc)
3560 rc = (rc2) ? rc2 : rc3;
3561 if (rc)
3562 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3563 if (recover_flag == CARD_STATE_UP)
3564 card->state = CARD_STATE_RECOVER;
3565 /* let user_space know that device is offline */
3566 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3567 mutex_unlock(&card->conf_mutex);
3568 mutex_unlock(&card->discipline_mutex);
3569 return 0;
3570 }
3571
qeth_l3_set_offline(struct ccwgroup_device * cgdev)3572 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3573 {
3574 return __qeth_l3_set_offline(cgdev, 0);
3575 }
3576
qeth_l3_recover(void * ptr)3577 static int qeth_l3_recover(void *ptr)
3578 {
3579 struct qeth_card *card;
3580 int rc = 0;
3581
3582 card = (struct qeth_card *) ptr;
3583 QETH_CARD_TEXT(card, 2, "recover1");
3584 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3585 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3586 return 0;
3587 QETH_CARD_TEXT(card, 2, "recover2");
3588 dev_warn(&card->gdev->dev,
3589 "A recovery process has been started for the device\n");
3590 __qeth_l3_set_offline(card->gdev, 1);
3591 rc = __qeth_l3_set_online(card->gdev, 1);
3592 if (!rc)
3593 dev_info(&card->gdev->dev,
3594 "Device successfully recovered!\n");
3595 else {
3596 rtnl_lock();
3597 dev_close(card->dev);
3598 rtnl_unlock();
3599 dev_warn(&card->gdev->dev, "The qeth device driver "
3600 "failed to recover an error on the device\n");
3601 }
3602 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3603 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3604 return 0;
3605 }
3606
qeth_l3_shutdown(struct ccwgroup_device * gdev)3607 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3608 {
3609 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3610 qeth_set_allowed_threads(card, 0, 1);
3611 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3612 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3613 qeth_qdio_clear_card(card, 0);
3614 qeth_clear_qdio_buffers(card);
3615 }
3616
qeth_l3_pm_suspend(struct ccwgroup_device * gdev)3617 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3618 {
3619 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3620
3621 if (card->dev)
3622 netif_device_detach(card->dev);
3623 qeth_set_allowed_threads(card, 0, 1);
3624 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3625 if (gdev->state == CCWGROUP_OFFLINE)
3626 return 0;
3627 if (card->state == CARD_STATE_UP) {
3628 if (card->info.hwtrap)
3629 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3630 __qeth_l3_set_offline(card->gdev, 1);
3631 } else
3632 __qeth_l3_set_offline(card->gdev, 0);
3633 return 0;
3634 }
3635
qeth_l3_pm_resume(struct ccwgroup_device * gdev)3636 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3637 {
3638 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3639 int rc = 0;
3640
3641 if (gdev->state == CCWGROUP_OFFLINE)
3642 goto out;
3643
3644 if (card->state == CARD_STATE_RECOVER) {
3645 rc = __qeth_l3_set_online(card->gdev, 1);
3646 if (rc) {
3647 rtnl_lock();
3648 dev_close(card->dev);
3649 rtnl_unlock();
3650 }
3651 } else
3652 rc = __qeth_l3_set_online(card->gdev, 0);
3653 out:
3654 qeth_set_allowed_threads(card, 0xffffffff, 0);
3655 if (card->dev)
3656 netif_device_attach(card->dev);
3657 if (rc)
3658 dev_warn(&card->gdev->dev, "The qeth device driver "
3659 "failed to recover an error on the device\n");
3660 return rc;
3661 }
3662
3663 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3664 .probe = qeth_l3_probe_device,
3665 .remove = qeth_l3_remove_device,
3666 .set_online = qeth_l3_set_online,
3667 .set_offline = qeth_l3_set_offline,
3668 .shutdown = qeth_l3_shutdown,
3669 .freeze = qeth_l3_pm_suspend,
3670 .thaw = qeth_l3_pm_resume,
3671 .restore = qeth_l3_pm_resume,
3672 };
3673 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3674
qeth_l3_ip_event(struct notifier_block * this,unsigned long event,void * ptr)3675 static int qeth_l3_ip_event(struct notifier_block *this,
3676 unsigned long event, void *ptr)
3677 {
3678 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3679 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3680 struct qeth_ipaddr *addr;
3681 struct qeth_card *card;
3682
3683 if (dev_net(dev) != &init_net)
3684 return NOTIFY_DONE;
3685
3686 card = qeth_l3_get_card_from_dev(dev);
3687 QETH_CARD_TEXT(card, 3, "ipevent");
3688 if (!card)
3689 return NOTIFY_DONE;
3690
3691 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3692 if (addr != NULL) {
3693 addr->u.a4.addr = ifa->ifa_address;
3694 addr->u.a4.mask = ifa->ifa_mask;
3695 addr->type = QETH_IP_TYPE_NORMAL;
3696 } else
3697 goto out;
3698
3699 switch (event) {
3700 case NETDEV_UP:
3701 if (!qeth_l3_add_ip(card, addr))
3702 kfree(addr);
3703 break;
3704 case NETDEV_DOWN:
3705 if (!qeth_l3_delete_ip(card, addr))
3706 kfree(addr);
3707 break;
3708 default:
3709 break;
3710 }
3711 qeth_l3_set_ip_addr_list(card);
3712 out:
3713 return NOTIFY_DONE;
3714 }
3715
3716 static struct notifier_block qeth_l3_ip_notifier = {
3717 qeth_l3_ip_event,
3718 NULL,
3719 };
3720
3721 #ifdef CONFIG_QETH_IPV6
3722 /**
3723 * IPv6 event handler
3724 */
qeth_l3_ip6_event(struct notifier_block * this,unsigned long event,void * ptr)3725 static int qeth_l3_ip6_event(struct notifier_block *this,
3726 unsigned long event, void *ptr)
3727 {
3728 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3729 struct net_device *dev = (struct net_device *)ifa->idev->dev;
3730 struct qeth_ipaddr *addr;
3731 struct qeth_card *card;
3732
3733 card = qeth_l3_get_card_from_dev(dev);
3734 if (!card)
3735 return NOTIFY_DONE;
3736 QETH_CARD_TEXT(card, 3, "ip6event");
3737 if (!qeth_is_supported(card, IPA_IPV6))
3738 return NOTIFY_DONE;
3739
3740 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3741 if (addr != NULL) {
3742 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3743 addr->u.a6.pfxlen = ifa->prefix_len;
3744 addr->type = QETH_IP_TYPE_NORMAL;
3745 } else
3746 goto out;
3747
3748 switch (event) {
3749 case NETDEV_UP:
3750 if (!qeth_l3_add_ip(card, addr))
3751 kfree(addr);
3752 break;
3753 case NETDEV_DOWN:
3754 if (!qeth_l3_delete_ip(card, addr))
3755 kfree(addr);
3756 break;
3757 default:
3758 break;
3759 }
3760 qeth_l3_set_ip_addr_list(card);
3761 out:
3762 return NOTIFY_DONE;
3763 }
3764
3765 static struct notifier_block qeth_l3_ip6_notifier = {
3766 qeth_l3_ip6_event,
3767 NULL,
3768 };
3769 #endif
3770
qeth_l3_register_notifiers(void)3771 static int qeth_l3_register_notifiers(void)
3772 {
3773 int rc;
3774
3775 QETH_DBF_TEXT(SETUP, 5, "regnotif");
3776 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3777 if (rc)
3778 return rc;
3779 #ifdef CONFIG_QETH_IPV6
3780 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3781 if (rc) {
3782 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3783 return rc;
3784 }
3785 #else
3786 pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3787 #endif
3788 return 0;
3789 }
3790
qeth_l3_unregister_notifiers(void)3791 static void qeth_l3_unregister_notifiers(void)
3792 {
3793
3794 QETH_DBF_TEXT(SETUP, 5, "unregnot");
3795 BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3796 #ifdef CONFIG_QETH_IPV6
3797 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3798 #endif /* QETH_IPV6 */
3799 }
3800
qeth_l3_init(void)3801 static int __init qeth_l3_init(void)
3802 {
3803 int rc = 0;
3804
3805 pr_info("register layer 3 discipline\n");
3806 rc = qeth_l3_register_notifiers();
3807 return rc;
3808 }
3809
qeth_l3_exit(void)3810 static void __exit qeth_l3_exit(void)
3811 {
3812 qeth_l3_unregister_notifiers();
3813 pr_info("unregister layer 3 discipline\n");
3814 }
3815
3816 module_init(qeth_l3_init);
3817 module_exit(qeth_l3_exit);
3818 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3819 MODULE_DESCRIPTION("qeth layer 3 discipline");
3820 MODULE_LICENSE("GPL");
3821