This source file includes following definitions.
- qeth_l3_ipaddr4_to_string
- qeth_l3_ipaddr6_to_string
- qeth_l3_ipaddr_to_string
- qeth_l3_get_addr_buffer
- qeth_l3_find_addr_by_ip
- qeth_l3_convert_addr_to_bits
- qeth_l3_is_addr_covered_by_ipato
- qeth_l3_delete_ip
- qeth_l3_add_ip
- qeth_l3_modify_ip
- qeth_l3_drain_rx_mode_cache
- qeth_l3_clear_ip_htable
- qeth_l3_recover_ip
- qeth_l3_setdelip_cb
- qeth_l3_send_setdelmc
- qeth_l3_fill_netmask
- qeth_l3_get_setdelip_flags
- qeth_l3_send_setdelip
- qeth_l3_send_setrouting
- qeth_l3_correct_routing_type
- qeth_l3_setrouting_v4
- qeth_l3_setrouting_v6
- qeth_l3_update_ipato
- qeth_l3_clear_ipato_list
- qeth_l3_add_ipato_entry
- qeth_l3_del_ipato_entry
- qeth_l3_modify_rxip_vipa
- qeth_l3_modify_hsuid
- qeth_l3_register_addr_entry
- qeth_l3_deregister_addr_entry
- qeth_l3_setadapter_parms
- qeth_l3_start_ipa_arp_processing
- qeth_l3_start_ipa_source_mac
- qeth_l3_start_ipa_vlan
- qeth_l3_start_ipa_multicast
- qeth_l3_softsetup_ipv6
- qeth_l3_start_ipa_ipv6
- qeth_l3_start_ipa_broadcast
- qeth_l3_start_ipassists
- qeth_l3_iqd_read_initial_mac_cb
- qeth_l3_iqd_read_initial_mac
- qeth_l3_get_unique_id_cb
- qeth_l3_get_unique_id
- qeth_diags_trace_cb
- qeth_diags_trace
- qeth_l3_add_mc_to_hash
- qeth_l3_add_vlan_mc
- qeth_l3_add_multicast_ipv4
- qeth_l3_add_mc6_to_hash
- qeth_l3_add_vlan_mc6
- qeth_l3_add_multicast_ipv6
- qeth_l3_vlan_rx_add_vid
- qeth_l3_vlan_rx_kill_vid
- qeth_l3_rebuild_skb
- qeth_l3_process_inbound_buffer
- qeth_l3_stop_card
- qeth_l3_set_promisc_mode
- qeth_l3_rx_mode_work
- qeth_l3_arp_makerc
- qeth_l3_arp_cmd_cb
- qeth_l3_arp_set_no_entries
- get_arp_entry_size
- arpentry_matches_prot
- qeth_l3_arp_query_cb
- qeth_l3_query_arp_cache_info
- qeth_l3_arp_query
- qeth_l3_arp_modify_entry
- qeth_l3_arp_flush_cache
- qeth_l3_do_ioctl
- qeth_l3_get_cast_type_rcu
- qeth_l3_get_cast_type
- qeth_l3_cast_type_to_flag
- qeth_l3_fill_header
- qeth_l3_fixup_headers
- qeth_l3_xmit
- qeth_l3_hard_start_xmit
- qeth_l3_set_rx_mode
- qeth_l3_neigh_setup_noarp
- qeth_l3_neigh_setup
- qeth_l3_osa_features_check
- qeth_l3_iqd_select_queue
- qeth_l3_osa_select_queue
- qeth_l3_setup_netdev
- qeth_l3_probe_device
- qeth_l3_remove_device
- qeth_l3_set_online
- __qeth_l3_set_offline
- qeth_l3_set_offline
- qeth_l3_recover
- qeth_l3_control_event
- qeth_l3_handle_ip_event
- qeth_l3_add_ip_worker
- qeth_l3_delete_ip_worker
- qeth_l3_get_card_from_dev
- qeth_l3_ip_event
- qeth_l3_ip6_event
- qeth_l3_register_notifiers
- qeth_l3_unregister_notifiers
- qeth_l3_init
- qeth_l3_exit
1
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9
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/bitops.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/etherdevice.h>
20 #include <linux/ip.h>
21 #include <linux/in.h>
22 #include <linux/ipv6.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25 #include <linux/slab.h>
26 #include <linux/if_ether.h>
27 #include <linux/if_vlan.h>
28 #include <linux/skbuff.h>
29
30 #include <net/ip.h>
31 #include <net/arp.h>
32 #include <net/route.h>
33 #include <net/ipv6.h>
34 #include <net/ip6_route.h>
35 #include <net/iucv/af_iucv.h>
36 #include <linux/hashtable.h>
37
38 #include "qeth_l3.h"
39
40
41 static int qeth_l3_set_offline(struct ccwgroup_device *);
42 static void qeth_l3_set_rx_mode(struct net_device *dev);
43 static int qeth_l3_register_addr_entry(struct qeth_card *,
44 struct qeth_ipaddr *);
45 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
46 struct qeth_ipaddr *);
47
48 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
49 {
50 sprintf(buf, "%pI4", addr);
51 }
52
53 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
54 {
55 sprintf(buf, "%pI6", addr);
56 }
57
58 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
59 char *buf)
60 {
61 if (proto == QETH_PROT_IPV4)
62 qeth_l3_ipaddr4_to_string(addr, buf);
63 else if (proto == QETH_PROT_IPV6)
64 qeth_l3_ipaddr6_to_string(addr, buf);
65 }
66
67 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
68 {
69 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
70
71 if (addr)
72 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
73 return addr;
74 }
75
76 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
77 struct qeth_ipaddr *query)
78 {
79 u64 key = qeth_l3_ipaddr_hash(query);
80 struct qeth_ipaddr *addr;
81
82 if (query->is_multicast) {
83 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
84 if (qeth_l3_addr_match_ip(addr, query))
85 return addr;
86 } else {
87 hash_for_each_possible(card->ip_htable, addr, hnode, key)
88 if (qeth_l3_addr_match_ip(addr, query))
89 return addr;
90 }
91 return NULL;
92 }
93
94 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
95 {
96 int i, j;
97 u8 octet;
98
99 for (i = 0; i < len; ++i) {
100 octet = addr[i];
101 for (j = 7; j >= 0; --j) {
102 bits[i*8 + j] = octet & 1;
103 octet >>= 1;
104 }
105 }
106 }
107
108 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
109 struct qeth_ipaddr *addr)
110 {
111 struct qeth_ipato_entry *ipatoe;
112 u8 addr_bits[128] = {0, };
113 u8 ipatoe_bits[128] = {0, };
114 int rc = 0;
115
116 if (!card->ipato.enabled)
117 return false;
118 if (addr->type != QETH_IP_TYPE_NORMAL)
119 return false;
120
121 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
122 (addr->proto == QETH_PROT_IPV4)? 4:16);
123 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
124 if (addr->proto != ipatoe->proto)
125 continue;
126 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
127 (ipatoe->proto == QETH_PROT_IPV4) ?
128 4 : 16);
129 if (addr->proto == QETH_PROT_IPV4)
130 rc = !memcmp(addr_bits, ipatoe_bits,
131 min(32, ipatoe->mask_bits));
132 else
133 rc = !memcmp(addr_bits, ipatoe_bits,
134 min(128, ipatoe->mask_bits));
135 if (rc)
136 break;
137 }
138
139 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
140 rc = !rc;
141 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
142 rc = !rc;
143
144 return rc;
145 }
146
147 static int qeth_l3_delete_ip(struct qeth_card *card,
148 struct qeth_ipaddr *tmp_addr)
149 {
150 int rc = 0;
151 struct qeth_ipaddr *addr;
152
153 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
154 QETH_CARD_TEXT(card, 2, "delrxip");
155 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
156 QETH_CARD_TEXT(card, 2, "delvipa");
157 else
158 QETH_CARD_TEXT(card, 2, "delip");
159
160 if (tmp_addr->proto == QETH_PROT_IPV4)
161 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
162 else {
163 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
164 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
165 }
166
167 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
168 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
169 return -ENOENT;
170
171 addr->ref_counter--;
172 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
173 return rc;
174 if (addr->in_progress)
175 return -EINPROGRESS;
176
177 if (qeth_card_hw_is_reachable(card))
178 rc = qeth_l3_deregister_addr_entry(card, addr);
179
180 hash_del(&addr->hnode);
181 kfree(addr);
182
183 return rc;
184 }
185
186 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
187 {
188 int rc = 0;
189 struct qeth_ipaddr *addr;
190 char buf[40];
191
192 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
193 QETH_CARD_TEXT(card, 2, "addrxip");
194 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
195 QETH_CARD_TEXT(card, 2, "addvipa");
196 else
197 QETH_CARD_TEXT(card, 2, "addip");
198
199 if (tmp_addr->proto == QETH_PROT_IPV4)
200 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
201 else {
202 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
203 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
204 }
205
206 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
207 if (addr) {
208 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
209 return -EADDRINUSE;
210 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
211 addr->ref_counter++;
212 return 0;
213 }
214 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
215 buf);
216 dev_warn(&card->gdev->dev,
217 "Registering IP address %s failed\n", buf);
218 return -EADDRINUSE;
219 } else {
220 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
221 if (!addr)
222 return -ENOMEM;
223
224 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
225 addr->ref_counter = 1;
226
227 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
228 QETH_CARD_TEXT(card, 2, "tkovaddr");
229 addr->ipato = 1;
230 }
231 hash_add(card->ip_htable, &addr->hnode,
232 qeth_l3_ipaddr_hash(addr));
233
234 if (!qeth_card_hw_is_reachable(card)) {
235 addr->disp_flag = QETH_DISP_ADDR_ADD;
236 return 0;
237 }
238
239
240
241
242
243
244
245
246 if (addr->proto == QETH_PROT_IPV4) {
247 addr->in_progress = 1;
248 mutex_unlock(&card->ip_lock);
249 rc = qeth_l3_register_addr_entry(card, addr);
250 mutex_lock(&card->ip_lock);
251 addr->in_progress = 0;
252 } else
253 rc = qeth_l3_register_addr_entry(card, addr);
254
255 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
256 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
257 if (addr->ref_counter < 1) {
258 qeth_l3_deregister_addr_entry(card, addr);
259 hash_del(&addr->hnode);
260 kfree(addr);
261 }
262 } else {
263 hash_del(&addr->hnode);
264 kfree(addr);
265 }
266 }
267 return rc;
268 }
269
270 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
271 bool add)
272 {
273 int rc;
274
275 mutex_lock(&card->ip_lock);
276 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
277 mutex_unlock(&card->ip_lock);
278
279 return rc;
280 }
281
282 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
283 {
284 struct qeth_ipaddr *addr;
285 struct hlist_node *tmp;
286 int i;
287
288 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
289 hash_del(&addr->hnode);
290 kfree(addr);
291 }
292 }
293
294 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
295 {
296 struct qeth_ipaddr *addr;
297 struct hlist_node *tmp;
298 int i;
299
300 QETH_CARD_TEXT(card, 4, "clearip");
301
302 mutex_lock(&card->ip_lock);
303
304 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
305 if (!recover) {
306 hash_del(&addr->hnode);
307 kfree(addr);
308 continue;
309 }
310 addr->disp_flag = QETH_DISP_ADDR_ADD;
311 }
312
313 mutex_unlock(&card->ip_lock);
314 }
315
316 static void qeth_l3_recover_ip(struct qeth_card *card)
317 {
318 struct qeth_ipaddr *addr;
319 struct hlist_node *tmp;
320 int i;
321 int rc;
322
323 QETH_CARD_TEXT(card, 4, "recovrip");
324
325 mutex_lock(&card->ip_lock);
326
327 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
328 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
329 if (addr->proto == QETH_PROT_IPV4) {
330 addr->in_progress = 1;
331 mutex_unlock(&card->ip_lock);
332 rc = qeth_l3_register_addr_entry(card, addr);
333 mutex_lock(&card->ip_lock);
334 addr->in_progress = 0;
335 } else
336 rc = qeth_l3_register_addr_entry(card, addr);
337
338 if (!rc) {
339 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
340 if (addr->ref_counter < 1)
341 qeth_l3_delete_ip(card, addr);
342 } else {
343 hash_del(&addr->hnode);
344 kfree(addr);
345 }
346 }
347 }
348
349 mutex_unlock(&card->ip_lock);
350 }
351
352 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
353 unsigned long data)
354 {
355 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
356
357 switch (cmd->hdr.return_code) {
358 case IPA_RC_SUCCESS:
359 return 0;
360 case IPA_RC_DUPLICATE_IP_ADDRESS:
361 return -EADDRINUSE;
362 case IPA_RC_MC_ADDR_NOT_FOUND:
363 return -ENOENT;
364 case IPA_RC_LAN_OFFLINE:
365 return -ENETDOWN;
366 default:
367 return -EIO;
368 }
369 }
370
371 static int qeth_l3_send_setdelmc(struct qeth_card *card,
372 struct qeth_ipaddr *addr, int ipacmd)
373 {
374 struct qeth_cmd_buffer *iob;
375 struct qeth_ipa_cmd *cmd;
376
377 QETH_CARD_TEXT(card, 4, "setdelmc");
378
379 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
380 IPA_DATA_SIZEOF(setdelipm));
381 if (!iob)
382 return -ENOMEM;
383 cmd = __ipa_cmd(iob);
384 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
385 if (addr->proto == QETH_PROT_IPV6)
386 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
387 sizeof(struct in6_addr));
388 else
389 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
390
391 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
392 }
393
394 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
395 {
396 int i, j;
397 for (i = 0; i < 16; i++) {
398 j = (len) - (i * 8);
399 if (j >= 8)
400 netmask[i] = 0xff;
401 else if (j > 0)
402 netmask[i] = (u8)(0xFF00 >> j);
403 else
404 netmask[i] = 0;
405 }
406 }
407
408 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
409 {
410 switch (addr->type) {
411 case QETH_IP_TYPE_RXIP:
412 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
413 case QETH_IP_TYPE_VIPA:
414 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
415 QETH_IPA_DELIP_VIPA_FLAG;
416 default:
417 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
418 }
419 }
420
421 static int qeth_l3_send_setdelip(struct qeth_card *card,
422 struct qeth_ipaddr *addr,
423 enum qeth_ipa_cmds ipacmd)
424 {
425 struct qeth_cmd_buffer *iob;
426 struct qeth_ipa_cmd *cmd;
427 __u8 netmask[16];
428 u32 flags;
429
430 QETH_CARD_TEXT(card, 4, "setdelip");
431
432 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
433 IPA_DATA_SIZEOF(setdelip6));
434 if (!iob)
435 return -ENOMEM;
436 cmd = __ipa_cmd(iob);
437
438 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
439 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
440
441 if (addr->proto == QETH_PROT_IPV6) {
442 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
443 sizeof(struct in6_addr));
444 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
445 memcpy(cmd->data.setdelip6.mask, netmask,
446 sizeof(struct in6_addr));
447 cmd->data.setdelip6.flags = flags;
448 } else {
449 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
450 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
451 cmd->data.setdelip4.flags = flags;
452 }
453
454 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
455 }
456
457 static int qeth_l3_send_setrouting(struct qeth_card *card,
458 enum qeth_routing_types type, enum qeth_prot_versions prot)
459 {
460 int rc;
461 struct qeth_ipa_cmd *cmd;
462 struct qeth_cmd_buffer *iob;
463
464 QETH_CARD_TEXT(card, 4, "setroutg");
465 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
466 IPA_DATA_SIZEOF(setrtg));
467 if (!iob)
468 return -ENOMEM;
469 cmd = __ipa_cmd(iob);
470 cmd->data.setrtg.type = (type);
471 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
472
473 return rc;
474 }
475
476 static int qeth_l3_correct_routing_type(struct qeth_card *card,
477 enum qeth_routing_types *type, enum qeth_prot_versions prot)
478 {
479 if (IS_IQD(card)) {
480 switch (*type) {
481 case NO_ROUTER:
482 case PRIMARY_CONNECTOR:
483 case SECONDARY_CONNECTOR:
484 case MULTICAST_ROUTER:
485 return 0;
486 default:
487 goto out_inval;
488 }
489 } else {
490 switch (*type) {
491 case NO_ROUTER:
492 case PRIMARY_ROUTER:
493 case SECONDARY_ROUTER:
494 return 0;
495 case MULTICAST_ROUTER:
496 if (qeth_is_ipafunc_supported(card, prot,
497 IPA_OSA_MC_ROUTER))
498 return 0;
499 default:
500 goto out_inval;
501 }
502 }
503 out_inval:
504 *type = NO_ROUTER;
505 return -EINVAL;
506 }
507
508 int qeth_l3_setrouting_v4(struct qeth_card *card)
509 {
510 int rc;
511
512 QETH_CARD_TEXT(card, 3, "setrtg4");
513
514 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
515 QETH_PROT_IPV4);
516 if (rc)
517 return rc;
518
519 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
520 QETH_PROT_IPV4);
521 if (rc) {
522 card->options.route4.type = NO_ROUTER;
523 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
524 rc, CARD_DEVID(card));
525 }
526 return rc;
527 }
528
529 int qeth_l3_setrouting_v6(struct qeth_card *card)
530 {
531 int rc = 0;
532
533 QETH_CARD_TEXT(card, 3, "setrtg6");
534
535 if (!qeth_is_supported(card, IPA_IPV6))
536 return 0;
537 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
538 QETH_PROT_IPV6);
539 if (rc)
540 return rc;
541
542 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
543 QETH_PROT_IPV6);
544 if (rc) {
545 card->options.route6.type = NO_ROUTER;
546 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
547 rc, CARD_DEVID(card));
548 }
549 return rc;
550 }
551
552
553
554
555
556
557
558
559
560
561 void qeth_l3_update_ipato(struct qeth_card *card)
562 {
563 struct qeth_ipaddr *addr;
564 unsigned int i;
565
566 hash_for_each(card->ip_htable, i, addr, hnode) {
567 if (addr->type != QETH_IP_TYPE_NORMAL)
568 continue;
569 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
570 }
571 }
572
573 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
574 {
575 struct qeth_ipato_entry *ipatoe, *tmp;
576
577 mutex_lock(&card->ip_lock);
578
579 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
580 list_del(&ipatoe->entry);
581 kfree(ipatoe);
582 }
583
584 qeth_l3_update_ipato(card);
585 mutex_unlock(&card->ip_lock);
586 }
587
588 int qeth_l3_add_ipato_entry(struct qeth_card *card,
589 struct qeth_ipato_entry *new)
590 {
591 struct qeth_ipato_entry *ipatoe;
592 int rc = 0;
593
594 QETH_CARD_TEXT(card, 2, "addipato");
595
596 mutex_lock(&card->ip_lock);
597
598 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
599 if (ipatoe->proto != new->proto)
600 continue;
601 if (!memcmp(ipatoe->addr, new->addr,
602 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
603 (ipatoe->mask_bits == new->mask_bits)) {
604 rc = -EEXIST;
605 break;
606 }
607 }
608
609 if (!rc) {
610 list_add_tail(&new->entry, &card->ipato.entries);
611 qeth_l3_update_ipato(card);
612 }
613
614 mutex_unlock(&card->ip_lock);
615
616 return rc;
617 }
618
619 int qeth_l3_del_ipato_entry(struct qeth_card *card,
620 enum qeth_prot_versions proto, u8 *addr,
621 int mask_bits)
622 {
623 struct qeth_ipato_entry *ipatoe, *tmp;
624 int rc = -ENOENT;
625
626 QETH_CARD_TEXT(card, 2, "delipato");
627
628 mutex_lock(&card->ip_lock);
629
630 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
631 if (ipatoe->proto != proto)
632 continue;
633 if (!memcmp(ipatoe->addr, addr,
634 (proto == QETH_PROT_IPV4)? 4:16) &&
635 (ipatoe->mask_bits == mask_bits)) {
636 list_del(&ipatoe->entry);
637 qeth_l3_update_ipato(card);
638 kfree(ipatoe);
639 rc = 0;
640 }
641 }
642
643 mutex_unlock(&card->ip_lock);
644 return rc;
645 }
646
647 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
648 enum qeth_ip_types type,
649 enum qeth_prot_versions proto)
650 {
651 struct qeth_ipaddr addr;
652
653 qeth_l3_init_ipaddr(&addr, type, proto);
654 if (proto == QETH_PROT_IPV4)
655 memcpy(&addr.u.a4.addr, ip, 4);
656 else
657 memcpy(&addr.u.a6.addr, ip, 16);
658
659 return qeth_l3_modify_ip(card, &addr, add);
660 }
661
662 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
663 {
664 struct qeth_ipaddr addr;
665 unsigned int i;
666
667 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
668 addr.u.a6.addr.s6_addr[0] = 0xfe;
669 addr.u.a6.addr.s6_addr[1] = 0x80;
670 for (i = 0; i < 8; i++)
671 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
672
673 return qeth_l3_modify_ip(card, &addr, add);
674 }
675
676 static int qeth_l3_register_addr_entry(struct qeth_card *card,
677 struct qeth_ipaddr *addr)
678 {
679 char buf[50];
680 int rc = 0;
681 int cnt = 3;
682
683 if (card->options.sniffer)
684 return 0;
685
686 if (addr->proto == QETH_PROT_IPV4) {
687 QETH_CARD_TEXT(card, 2, "setaddr4");
688 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
689 } else if (addr->proto == QETH_PROT_IPV6) {
690 QETH_CARD_TEXT(card, 2, "setaddr6");
691 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
692 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
693 } else {
694 QETH_CARD_TEXT(card, 2, "setaddr?");
695 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
696 }
697 do {
698 if (addr->is_multicast)
699 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
700 else
701 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
702 if (rc)
703 QETH_CARD_TEXT(card, 2, "failed");
704 } while ((--cnt > 0) && rc);
705 if (rc) {
706 QETH_CARD_TEXT(card, 2, "FAILED");
707 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
708 dev_warn(&card->gdev->dev,
709 "Registering IP address %s failed\n", buf);
710 }
711 return rc;
712 }
713
714 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
715 struct qeth_ipaddr *addr)
716 {
717 int rc = 0;
718
719 if (card->options.sniffer)
720 return 0;
721
722 if (addr->proto == QETH_PROT_IPV4) {
723 QETH_CARD_TEXT(card, 2, "deladdr4");
724 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
725 } else if (addr->proto == QETH_PROT_IPV6) {
726 QETH_CARD_TEXT(card, 2, "deladdr6");
727 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
728 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
729 } else {
730 QETH_CARD_TEXT(card, 2, "deladdr?");
731 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
732 }
733 if (addr->is_multicast)
734 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
735 else
736 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
737 if (rc)
738 QETH_CARD_TEXT(card, 2, "failed");
739
740 return rc;
741 }
742
743 static int qeth_l3_setadapter_parms(struct qeth_card *card)
744 {
745 int rc = 0;
746
747 QETH_CARD_TEXT(card, 2, "setadprm");
748
749 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
750 rc = qeth_setadpparms_change_macaddr(card);
751 if (rc)
752 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
753 " address failed\n");
754 }
755
756 return rc;
757 }
758
759 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
760 {
761 int rc;
762
763 QETH_CARD_TEXT(card, 3, "ipaarp");
764
765 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
766 dev_info(&card->gdev->dev,
767 "ARP processing not supported on %s!\n",
768 QETH_CARD_IFNAME(card));
769 return 0;
770 }
771 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
772 IPA_CMD_ASS_START, NULL);
773 if (rc) {
774 dev_warn(&card->gdev->dev,
775 "Starting ARP processing support for %s failed\n",
776 QETH_CARD_IFNAME(card));
777 }
778 return rc;
779 }
780
781 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
782 {
783 int rc;
784
785 QETH_CARD_TEXT(card, 3, "stsrcmac");
786
787 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
788 dev_info(&card->gdev->dev,
789 "Inbound source MAC-address not supported on %s\n",
790 QETH_CARD_IFNAME(card));
791 return -EOPNOTSUPP;
792 }
793
794 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
795 IPA_CMD_ASS_START, NULL);
796 if (rc)
797 dev_warn(&card->gdev->dev,
798 "Starting source MAC-address support for %s failed\n",
799 QETH_CARD_IFNAME(card));
800 return rc;
801 }
802
803 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
804 {
805 int rc = 0;
806
807 QETH_CARD_TEXT(card, 3, "strtvlan");
808
809 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
810 dev_info(&card->gdev->dev,
811 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
812 return -EOPNOTSUPP;
813 }
814
815 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
816 IPA_CMD_ASS_START, NULL);
817 if (rc) {
818 dev_warn(&card->gdev->dev,
819 "Starting VLAN support for %s failed\n",
820 QETH_CARD_IFNAME(card));
821 } else {
822 dev_info(&card->gdev->dev, "VLAN enabled\n");
823 }
824 return rc;
825 }
826
827 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
828 {
829 int rc;
830
831 QETH_CARD_TEXT(card, 3, "stmcast");
832
833 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
834 dev_info(&card->gdev->dev,
835 "Multicast not supported on %s\n",
836 QETH_CARD_IFNAME(card));
837 return -EOPNOTSUPP;
838 }
839
840 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
841 IPA_CMD_ASS_START, NULL);
842 if (rc) {
843 dev_warn(&card->gdev->dev,
844 "Starting multicast support for %s failed\n",
845 QETH_CARD_IFNAME(card));
846 } else {
847 dev_info(&card->gdev->dev, "Multicast enabled\n");
848 card->dev->flags |= IFF_MULTICAST;
849 }
850 return rc;
851 }
852
853 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
854 {
855 u32 ipv6_data = 3;
856 int rc;
857
858 QETH_CARD_TEXT(card, 3, "softipv6");
859
860 if (IS_IQD(card))
861 goto out;
862
863 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
864 &ipv6_data);
865 if (rc) {
866 dev_err(&card->gdev->dev,
867 "Activating IPv6 support for %s failed\n",
868 QETH_CARD_IFNAME(card));
869 return rc;
870 }
871 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
872 NULL);
873 if (rc) {
874 dev_err(&card->gdev->dev,
875 "Activating IPv6 support for %s failed\n",
876 QETH_CARD_IFNAME(card));
877 return rc;
878 }
879 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
880 IPA_CMD_ASS_START, NULL);
881 if (rc) {
882 dev_warn(&card->gdev->dev,
883 "Enabling the passthrough mode for %s failed\n",
884 QETH_CARD_IFNAME(card));
885 return rc;
886 }
887 out:
888 dev_info(&card->gdev->dev, "IPV6 enabled\n");
889 return 0;
890 }
891
892 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
893 {
894 QETH_CARD_TEXT(card, 3, "strtipv6");
895
896 if (!qeth_is_supported(card, IPA_IPV6)) {
897 dev_info(&card->gdev->dev,
898 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
899 return 0;
900 }
901 return qeth_l3_softsetup_ipv6(card);
902 }
903
904 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
905 {
906 u32 filter_data = 1;
907 int rc;
908
909 QETH_CARD_TEXT(card, 3, "stbrdcst");
910 card->info.broadcast_capable = 0;
911 if (!qeth_is_supported(card, IPA_FILTERING)) {
912 dev_info(&card->gdev->dev,
913 "Broadcast not supported on %s\n",
914 QETH_CARD_IFNAME(card));
915 rc = -EOPNOTSUPP;
916 goto out;
917 }
918 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
919 IPA_CMD_ASS_START, NULL);
920 if (rc) {
921 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
922 "%s failed\n", QETH_CARD_IFNAME(card));
923 goto out;
924 }
925
926 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
927 IPA_CMD_ASS_CONFIGURE, &filter_data);
928 if (rc) {
929 dev_warn(&card->gdev->dev,
930 "Setting up broadcast filtering for %s failed\n",
931 QETH_CARD_IFNAME(card));
932 goto out;
933 }
934 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
935 dev_info(&card->gdev->dev, "Broadcast enabled\n");
936 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
937 IPA_CMD_ASS_ENABLE, &filter_data);
938 if (rc) {
939 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
940 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
941 goto out;
942 }
943 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
944 out:
945 if (card->info.broadcast_capable)
946 card->dev->flags |= IFF_BROADCAST;
947 else
948 card->dev->flags &= ~IFF_BROADCAST;
949 return rc;
950 }
951
952 static int qeth_l3_start_ipassists(struct qeth_card *card)
953 {
954 QETH_CARD_TEXT(card, 3, "strtipas");
955
956 if (qeth_set_access_ctrl_online(card, 0))
957 return -EIO;
958 qeth_l3_start_ipa_arp_processing(card);
959 qeth_l3_start_ipa_source_mac(card);
960 qeth_l3_start_ipa_vlan(card);
961 qeth_l3_start_ipa_multicast(card);
962 qeth_l3_start_ipa_ipv6(card);
963 qeth_l3_start_ipa_broadcast(card);
964 return 0;
965 }
966
967 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
968 struct qeth_reply *reply, unsigned long data)
969 {
970 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
971
972 if (cmd->hdr.return_code)
973 return -EIO;
974
975 ether_addr_copy(card->dev->dev_addr,
976 cmd->data.create_destroy_addr.unique_id);
977 return 0;
978 }
979
980 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
981 {
982 int rc = 0;
983 struct qeth_cmd_buffer *iob;
984 struct qeth_ipa_cmd *cmd;
985
986 QETH_CARD_TEXT(card, 2, "hsrmac");
987
988 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
989 IPA_DATA_SIZEOF(create_destroy_addr));
990 if (!iob)
991 return -ENOMEM;
992 cmd = __ipa_cmd(iob);
993 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
994 card->info.unique_id;
995
996 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
997 NULL);
998 return rc;
999 }
1000
1001 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1002 struct qeth_reply *reply, unsigned long data)
1003 {
1004 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1005
1006 if (cmd->hdr.return_code == 0) {
1007 card->info.unique_id = *((__u16 *)
1008 &cmd->data.create_destroy_addr.unique_id[6]);
1009 return 0;
1010 }
1011
1012 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1013 UNIQUE_ID_NOT_BY_CARD;
1014 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
1015 return -EIO;
1016 }
1017
1018 static int qeth_l3_get_unique_id(struct qeth_card *card)
1019 {
1020 int rc = 0;
1021 struct qeth_cmd_buffer *iob;
1022 struct qeth_ipa_cmd *cmd;
1023
1024 QETH_CARD_TEXT(card, 2, "guniqeid");
1025
1026 if (!qeth_is_supported(card, IPA_IPV6)) {
1027 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1028 UNIQUE_ID_NOT_BY_CARD;
1029 return 0;
1030 }
1031
1032 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
1033 IPA_DATA_SIZEOF(create_destroy_addr));
1034 if (!iob)
1035 return -ENOMEM;
1036 cmd = __ipa_cmd(iob);
1037 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1038 card->info.unique_id;
1039
1040 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1041 return rc;
1042 }
1043
1044 static int
1045 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1046 unsigned long data)
1047 {
1048 struct qeth_ipa_cmd *cmd;
1049 __u16 rc;
1050
1051 QETH_CARD_TEXT(card, 2, "diastrcb");
1052
1053 cmd = (struct qeth_ipa_cmd *)data;
1054 rc = cmd->hdr.return_code;
1055 if (rc)
1056 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1057 switch (cmd->data.diagass.action) {
1058 case QETH_DIAGS_CMD_TRACE_QUERY:
1059 break;
1060 case QETH_DIAGS_CMD_TRACE_DISABLE:
1061 switch (rc) {
1062 case 0:
1063 case IPA_RC_INVALID_SUBCMD:
1064 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1065 dev_info(&card->gdev->dev, "The HiperSockets network "
1066 "traffic analyzer is deactivated\n");
1067 break;
1068 default:
1069 break;
1070 }
1071 break;
1072 case QETH_DIAGS_CMD_TRACE_ENABLE:
1073 switch (rc) {
1074 case 0:
1075 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1076 dev_info(&card->gdev->dev, "The HiperSockets network "
1077 "traffic analyzer is activated\n");
1078 break;
1079 case IPA_RC_HARDWARE_AUTH_ERROR:
1080 dev_warn(&card->gdev->dev, "The device is not "
1081 "authorized to run as a HiperSockets network "
1082 "traffic analyzer\n");
1083 break;
1084 case IPA_RC_TRACE_ALREADY_ACTIVE:
1085 dev_warn(&card->gdev->dev, "A HiperSockets "
1086 "network traffic analyzer is already "
1087 "active in the HiperSockets LAN\n");
1088 break;
1089 default:
1090 break;
1091 }
1092 break;
1093 default:
1094 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1095 cmd->data.diagass.action, CARD_DEVID(card));
1096 }
1097
1098 return rc ? -EIO : 0;
1099 }
1100
1101 static int
1102 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1103 {
1104 struct qeth_cmd_buffer *iob;
1105 struct qeth_ipa_cmd *cmd;
1106
1107 QETH_CARD_TEXT(card, 2, "diagtrac");
1108
1109 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1110 if (!iob)
1111 return -ENOMEM;
1112 cmd = __ipa_cmd(iob);
1113 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1114 cmd->data.diagass.action = diags_cmd;
1115 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1116 }
1117
1118 static void
1119 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1120 {
1121 struct ip_mc_list *im4;
1122 struct qeth_ipaddr *tmp, *ipm;
1123
1124 QETH_CARD_TEXT(card, 4, "addmc");
1125
1126 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1127 if (!tmp)
1128 return;
1129
1130 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1131 im4 = rcu_dereference(im4->next_rcu)) {
1132 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1133 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1134 tmp->is_multicast = 1;
1135
1136 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1137 if (ipm) {
1138
1139 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1140 } else {
1141 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1142 if (!ipm)
1143 continue;
1144 ether_addr_copy(ipm->mac, tmp->mac);
1145 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1146 ipm->is_multicast = 1;
1147 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1148 hash_add(card->ip_mc_htable,
1149 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1150 }
1151 }
1152
1153 kfree(tmp);
1154 }
1155
1156
1157 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1158 {
1159 struct in_device *in_dev;
1160 u16 vid;
1161
1162 QETH_CARD_TEXT(card, 4, "addmcvl");
1163
1164 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1165 return;
1166
1167 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1168 struct net_device *netdev;
1169
1170 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1171 vid);
1172 if (netdev == NULL ||
1173 !(netdev->flags & IFF_UP))
1174 continue;
1175 in_dev = __in_dev_get_rcu(netdev);
1176 if (!in_dev)
1177 continue;
1178 qeth_l3_add_mc_to_hash(card, in_dev);
1179 }
1180 }
1181
1182 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1183 {
1184 struct in_device *in4_dev;
1185
1186 QETH_CARD_TEXT(card, 4, "chkmcv4");
1187
1188 rcu_read_lock();
1189 in4_dev = __in_dev_get_rcu(card->dev);
1190 if (in4_dev == NULL)
1191 goto unlock;
1192 qeth_l3_add_mc_to_hash(card, in4_dev);
1193 qeth_l3_add_vlan_mc(card);
1194 unlock:
1195 rcu_read_unlock();
1196 }
1197
1198 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1199 struct inet6_dev *in6_dev)
1200 {
1201 struct qeth_ipaddr *ipm;
1202 struct ifmcaddr6 *im6;
1203 struct qeth_ipaddr *tmp;
1204
1205 QETH_CARD_TEXT(card, 4, "addmc6");
1206
1207 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1208 if (!tmp)
1209 return;
1210
1211 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1212 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1213 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1214 sizeof(struct in6_addr));
1215 tmp->is_multicast = 1;
1216
1217 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1218 if (ipm) {
1219
1220 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1221 continue;
1222 }
1223
1224 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1225 if (!ipm)
1226 continue;
1227
1228 ether_addr_copy(ipm->mac, tmp->mac);
1229 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1230 sizeof(struct in6_addr));
1231 ipm->is_multicast = 1;
1232 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1233 hash_add(card->ip_mc_htable,
1234 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1235
1236 }
1237 kfree(tmp);
1238 }
1239
1240
1241 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1242 {
1243 struct inet6_dev *in_dev;
1244 u16 vid;
1245
1246 QETH_CARD_TEXT(card, 4, "admc6vl");
1247
1248 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1249 return;
1250
1251 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1252 struct net_device *netdev;
1253
1254 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1255 vid);
1256 if (netdev == NULL ||
1257 !(netdev->flags & IFF_UP))
1258 continue;
1259 in_dev = in6_dev_get(netdev);
1260 if (!in_dev)
1261 continue;
1262 read_lock_bh(&in_dev->lock);
1263 qeth_l3_add_mc6_to_hash(card, in_dev);
1264 read_unlock_bh(&in_dev->lock);
1265 in6_dev_put(in_dev);
1266 }
1267 }
1268
1269 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1270 {
1271 struct inet6_dev *in6_dev;
1272
1273 QETH_CARD_TEXT(card, 4, "chkmcv6");
1274
1275 if (!qeth_is_supported(card, IPA_IPV6))
1276 return ;
1277 in6_dev = in6_dev_get(card->dev);
1278 if (!in6_dev)
1279 return;
1280
1281 rcu_read_lock();
1282 read_lock_bh(&in6_dev->lock);
1283 qeth_l3_add_mc6_to_hash(card, in6_dev);
1284 qeth_l3_add_vlan_mc6(card);
1285 read_unlock_bh(&in6_dev->lock);
1286 rcu_read_unlock();
1287 in6_dev_put(in6_dev);
1288 }
1289
1290 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1291 __be16 proto, u16 vid)
1292 {
1293 struct qeth_card *card = dev->ml_priv;
1294
1295 set_bit(vid, card->active_vlans);
1296 return 0;
1297 }
1298
1299 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1300 __be16 proto, u16 vid)
1301 {
1302 struct qeth_card *card = dev->ml_priv;
1303
1304 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1305
1306 clear_bit(vid, card->active_vlans);
1307 qeth_l3_set_rx_mode(dev);
1308 return 0;
1309 }
1310
1311 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1312 struct qeth_hdr *hdr)
1313 {
1314 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
1315 struct net_device *dev = skb->dev;
1316
1317 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
1318 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
1319 "FAKELL", skb->len);
1320 return;
1321 }
1322
1323 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1324 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1325 ETH_P_IP;
1326 unsigned char tg_addr[ETH_ALEN];
1327
1328 skb_reset_network_header(skb);
1329 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1330 case QETH_CAST_MULTICAST:
1331 if (prot == ETH_P_IP)
1332 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1333 else
1334 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1335 QETH_CARD_STAT_INC(card, rx_multicast);
1336 break;
1337 case QETH_CAST_BROADCAST:
1338 ether_addr_copy(tg_addr, card->dev->broadcast);
1339 QETH_CARD_STAT_INC(card, rx_multicast);
1340 break;
1341 default:
1342 if (card->options.sniffer)
1343 skb->pkt_type = PACKET_OTHERHOST;
1344 ether_addr_copy(tg_addr, card->dev->dev_addr);
1345 }
1346
1347 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1348 card->dev->header_ops->create(skb, card->dev, prot,
1349 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1350 skb->len);
1351 else
1352 card->dev->header_ops->create(skb, card->dev, prot,
1353 tg_addr, "FAKELL", skb->len);
1354 }
1355
1356
1357 if (!card->options.sniffer &&
1358 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1359 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1360 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1361 hdr->hdr.l3.vlan_id :
1362 hdr->hdr.l3.next_hop.rx.vlan_id;
1363 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1364 }
1365
1366 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1367 }
1368
1369 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1370 int budget, int *done)
1371 {
1372 int work_done = 0;
1373 struct sk_buff *skb;
1374 struct qeth_hdr *hdr;
1375 unsigned int len;
1376
1377 *done = 0;
1378 WARN_ON_ONCE(!budget);
1379 while (budget) {
1380 skb = qeth_core_get_next_skb(card,
1381 &card->qdio.in_q->bufs[card->rx.b_index],
1382 &card->rx.b_element, &card->rx.e_offset, &hdr);
1383 if (!skb) {
1384 *done = 1;
1385 break;
1386 }
1387 switch (hdr->hdr.l3.id) {
1388 case QETH_HEADER_TYPE_LAYER3:
1389 qeth_l3_rebuild_skb(card, skb, hdr);
1390
1391 case QETH_HEADER_TYPE_LAYER2:
1392 skb->protocol = eth_type_trans(skb, skb->dev);
1393 len = skb->len;
1394 napi_gro_receive(&card->napi, skb);
1395 break;
1396 default:
1397 dev_kfree_skb_any(skb);
1398 QETH_CARD_TEXT(card, 3, "inbunkno");
1399 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1400 continue;
1401 }
1402 work_done++;
1403 budget--;
1404 QETH_CARD_STAT_INC(card, rx_packets);
1405 QETH_CARD_STAT_ADD(card, rx_bytes, len);
1406 }
1407 return work_done;
1408 }
1409
1410 static void qeth_l3_stop_card(struct qeth_card *card)
1411 {
1412 QETH_CARD_TEXT(card, 2, "stopcard");
1413
1414 qeth_set_allowed_threads(card, 0, 1);
1415
1416 cancel_work_sync(&card->rx_mode_work);
1417 qeth_l3_drain_rx_mode_cache(card);
1418
1419 if (card->options.sniffer &&
1420 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1421 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1422
1423 if (card->state == CARD_STATE_SOFTSETUP) {
1424 qeth_l3_clear_ip_htable(card, 1);
1425 qeth_clear_ipacmd_list(card);
1426 card->state = CARD_STATE_HARDSETUP;
1427 }
1428 if (card->state == CARD_STATE_HARDSETUP) {
1429 qeth_drain_output_queues(card);
1430 qeth_clear_working_pool_list(card);
1431 card->state = CARD_STATE_DOWN;
1432 }
1433
1434 qeth_qdio_clear_card(card, 0);
1435 flush_workqueue(card->event_wq);
1436 card->info.promisc_mode = 0;
1437 }
1438
1439 static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1440 {
1441 bool enable = card->dev->flags & IFF_PROMISC;
1442
1443 if (card->info.promisc_mode == enable)
1444 return;
1445
1446 if (IS_VM_NIC(card)) {
1447 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1448 qeth_setadp_promisc_mode(card, enable);
1449 } else if (card->options.sniffer &&
1450 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1451 if (enable) {
1452 QETH_CARD_TEXT(card, 3, "+promisc");
1453 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1454 } else {
1455 QETH_CARD_TEXT(card, 3, "-promisc");
1456 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1457 }
1458 }
1459 }
1460
1461 static void qeth_l3_rx_mode_work(struct work_struct *work)
1462 {
1463 struct qeth_card *card = container_of(work, struct qeth_card,
1464 rx_mode_work);
1465 struct qeth_ipaddr *addr;
1466 struct hlist_node *tmp;
1467 int i, rc;
1468
1469 QETH_CARD_TEXT(card, 3, "setmulti");
1470
1471 if (!card->options.sniffer) {
1472 qeth_l3_add_multicast_ipv4(card);
1473 qeth_l3_add_multicast_ipv6(card);
1474
1475 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1476 switch (addr->disp_flag) {
1477 case QETH_DISP_ADDR_DELETE:
1478 rc = qeth_l3_deregister_addr_entry(card, addr);
1479 if (!rc || rc == -ENOENT) {
1480 hash_del(&addr->hnode);
1481 kfree(addr);
1482 }
1483 break;
1484 case QETH_DISP_ADDR_ADD:
1485 rc = qeth_l3_register_addr_entry(card, addr);
1486 if (rc && rc != -ENETDOWN) {
1487 hash_del(&addr->hnode);
1488 kfree(addr);
1489 break;
1490 }
1491 addr->ref_counter = 1;
1492
1493 default:
1494
1495 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1496 }
1497 }
1498 }
1499
1500 qeth_l3_set_promisc_mode(card);
1501 }
1502
1503 static int qeth_l3_arp_makerc(u16 rc)
1504 {
1505 switch (rc) {
1506 case IPA_RC_SUCCESS:
1507 return 0;
1508 case QETH_IPA_ARP_RC_NOTSUPP:
1509 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1510 return -EOPNOTSUPP;
1511 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1512 return -EINVAL;
1513 case QETH_IPA_ARP_RC_Q_NO_DATA:
1514 return -ENOENT;
1515 default:
1516 return -EIO;
1517 }
1518 }
1519
1520 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1521 unsigned long data)
1522 {
1523 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1524
1525 qeth_setassparms_cb(card, reply, data);
1526 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1527 }
1528
1529 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1530 {
1531 struct qeth_cmd_buffer *iob;
1532 int rc;
1533
1534 QETH_CARD_TEXT(card, 3, "arpstnoe");
1535
1536
1537
1538
1539
1540
1541 if (IS_VM_NIC(card))
1542 return -EOPNOTSUPP;
1543 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1544 return -EOPNOTSUPP;
1545 }
1546
1547 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1548 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1549 SETASS_DATA_SIZEOF(flags_32bit),
1550 QETH_PROT_IPV4);
1551 if (!iob)
1552 return -ENOMEM;
1553
1554 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1555 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1556 if (rc)
1557 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1558 CARD_DEVID(card), rc);
1559 return rc;
1560 }
1561
1562 static __u32 get_arp_entry_size(struct qeth_card *card,
1563 struct qeth_arp_query_data *qdata,
1564 struct qeth_arp_entrytype *type, __u8 strip_entries)
1565 {
1566 __u32 rc;
1567 __u8 is_hsi;
1568
1569 is_hsi = qdata->reply_bits == 5;
1570 if (type->ip == QETHARP_IP_ADDR_V4) {
1571 QETH_CARD_TEXT(card, 4, "arpev4");
1572 if (strip_entries) {
1573 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1574 sizeof(struct qeth_arp_qi_entry7_short);
1575 } else {
1576 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1577 sizeof(struct qeth_arp_qi_entry7);
1578 }
1579 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1580 QETH_CARD_TEXT(card, 4, "arpev6");
1581 if (strip_entries) {
1582 rc = is_hsi ?
1583 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1584 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1585 } else {
1586 rc = is_hsi ?
1587 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1588 sizeof(struct qeth_arp_qi_entry7_ipv6);
1589 }
1590 } else {
1591 QETH_CARD_TEXT(card, 4, "arpinv");
1592 rc = 0;
1593 }
1594
1595 return rc;
1596 }
1597
1598 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1599 {
1600 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1601 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1602 }
1603
1604 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1605 struct qeth_reply *reply, unsigned long data)
1606 {
1607 struct qeth_ipa_cmd *cmd;
1608 struct qeth_arp_query_data *qdata;
1609 struct qeth_arp_query_info *qinfo;
1610 int e;
1611 int entrybytes_done;
1612 int stripped_bytes;
1613 __u8 do_strip_entries;
1614
1615 QETH_CARD_TEXT(card, 3, "arpquecb");
1616
1617 qinfo = (struct qeth_arp_query_info *) reply->param;
1618 cmd = (struct qeth_ipa_cmd *) data;
1619 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1620 if (cmd->hdr.return_code) {
1621 QETH_CARD_TEXT(card, 4, "arpcberr");
1622 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1623 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1624 }
1625 if (cmd->data.setassparms.hdr.return_code) {
1626 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1627 QETH_CARD_TEXT(card, 4, "setaperr");
1628 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1629 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1630 }
1631 qdata = &cmd->data.setassparms.data.query_arp;
1632 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1633
1634 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1635 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1636 entrybytes_done = 0;
1637 for (e = 0; e < qdata->no_entries; ++e) {
1638 char *cur_entry;
1639 __u32 esize;
1640 struct qeth_arp_entrytype *etype;
1641
1642 cur_entry = &qdata->data + entrybytes_done;
1643 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1644 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1645 QETH_CARD_TEXT(card, 4, "pmis");
1646 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1647 break;
1648 }
1649 esize = get_arp_entry_size(card, qdata, etype,
1650 do_strip_entries);
1651 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1652 if (!esize)
1653 break;
1654
1655 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1656 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1657 memset(qinfo->udata, 0, 4);
1658 return -ENOSPC;
1659 }
1660
1661 memcpy(qinfo->udata + qinfo->udata_offset,
1662 &qdata->data + entrybytes_done + stripped_bytes,
1663 esize);
1664 entrybytes_done += esize + stripped_bytes;
1665 qinfo->udata_offset += esize;
1666 ++qinfo->no_entries;
1667 }
1668
1669 if (cmd->data.setassparms.hdr.seq_no <
1670 cmd->data.setassparms.hdr.number_of_replies)
1671 return 1;
1672 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1673 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1674
1675
1676 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1677 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1678 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1679 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1680 return 0;
1681 }
1682
1683 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1684 enum qeth_prot_versions prot,
1685 struct qeth_arp_query_info *qinfo)
1686 {
1687 struct qeth_cmd_buffer *iob;
1688 struct qeth_ipa_cmd *cmd;
1689 int rc;
1690
1691 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1692
1693 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1694 IPA_CMD_ASS_ARP_QUERY_INFO,
1695 SETASS_DATA_SIZEOF(query_arp), prot);
1696 if (!iob)
1697 return -ENOMEM;
1698 cmd = __ipa_cmd(iob);
1699 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1700 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1701 if (rc)
1702 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1703 CARD_DEVID(card), rc);
1704 return rc;
1705 }
1706
1707 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1708 {
1709 struct qeth_arp_query_info qinfo = {0, };
1710 int rc;
1711
1712 QETH_CARD_TEXT(card, 3, "arpquery");
1713
1714 if (!qeth_is_supported(card,
1715 IPA_ARP_PROCESSING)) {
1716 QETH_CARD_TEXT(card, 3, "arpqnsup");
1717 rc = -EOPNOTSUPP;
1718 goto out;
1719 }
1720
1721 if (copy_from_user(&qinfo, udata, 6)) {
1722 rc = -EFAULT;
1723 goto out;
1724 }
1725 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1726 if (!qinfo.udata) {
1727 rc = -ENOMEM;
1728 goto out;
1729 }
1730 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1731 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1732 if (rc) {
1733 if (copy_to_user(udata, qinfo.udata, 4))
1734 rc = -EFAULT;
1735 goto free_and_out;
1736 }
1737 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1738
1739 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1740 }
1741 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1742 QETH_CARD_TEXT(card, 4, "qactf");
1743 rc = -EFAULT;
1744 goto free_and_out;
1745 }
1746 QETH_CARD_TEXT(card, 4, "qacts");
1747
1748 free_and_out:
1749 kfree(qinfo.udata);
1750 out:
1751 return rc;
1752 }
1753
1754 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1755 struct qeth_arp_cache_entry *entry,
1756 enum qeth_arp_process_subcmds arp_cmd)
1757 {
1758 struct qeth_arp_cache_entry *cmd_entry;
1759 struct qeth_cmd_buffer *iob;
1760 int rc;
1761
1762 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1763 QETH_CARD_TEXT(card, 3, "arpadd");
1764 else
1765 QETH_CARD_TEXT(card, 3, "arpdel");
1766
1767
1768
1769
1770
1771
1772 if (IS_VM_NIC(card))
1773 return -EOPNOTSUPP;
1774 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1775 return -EOPNOTSUPP;
1776 }
1777
1778 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1779 SETASS_DATA_SIZEOF(arp_entry),
1780 QETH_PROT_IPV4);
1781 if (!iob)
1782 return -ENOMEM;
1783
1784 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1785 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1786 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1787 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1788 if (rc)
1789 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1790 arp_cmd, CARD_DEVID(card), rc);
1791 return rc;
1792 }
1793
1794 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1795 {
1796 struct qeth_cmd_buffer *iob;
1797 int rc;
1798
1799 QETH_CARD_TEXT(card, 3, "arpflush");
1800
1801
1802
1803
1804
1805
1806 if (IS_VM_NIC(card) || IS_IQD(card))
1807 return -EOPNOTSUPP;
1808 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1809 return -EOPNOTSUPP;
1810 }
1811
1812 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1813 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1814 QETH_PROT_IPV4);
1815 if (!iob)
1816 return -ENOMEM;
1817
1818 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1819 if (rc)
1820 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1821 CARD_DEVID(card), rc);
1822 return rc;
1823 }
1824
1825 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1826 {
1827 struct qeth_card *card = dev->ml_priv;
1828 struct qeth_arp_cache_entry arp_entry;
1829 enum qeth_arp_process_subcmds arp_cmd;
1830 int rc = 0;
1831
1832 switch (cmd) {
1833 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1834 if (!capable(CAP_NET_ADMIN)) {
1835 rc = -EPERM;
1836 break;
1837 }
1838 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1839 break;
1840 case SIOC_QETH_ARP_QUERY_INFO:
1841 if (!capable(CAP_NET_ADMIN)) {
1842 rc = -EPERM;
1843 break;
1844 }
1845 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1846 break;
1847 case SIOC_QETH_ARP_ADD_ENTRY:
1848 case SIOC_QETH_ARP_REMOVE_ENTRY:
1849 if (!capable(CAP_NET_ADMIN))
1850 return -EPERM;
1851 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1852 return -EFAULT;
1853
1854 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1855 IPA_CMD_ASS_ARP_ADD_ENTRY :
1856 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1857 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1858 case SIOC_QETH_ARP_FLUSH_CACHE:
1859 if (!capable(CAP_NET_ADMIN)) {
1860 rc = -EPERM;
1861 break;
1862 }
1863 rc = qeth_l3_arp_flush_cache(card);
1864 break;
1865 default:
1866 rc = -EOPNOTSUPP;
1867 }
1868 return rc;
1869 }
1870
1871 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1872 int ipv)
1873 {
1874 struct neighbour *n = NULL;
1875
1876 if (dst)
1877 n = dst_neigh_lookup_skb(dst, skb);
1878
1879 if (n) {
1880 int cast_type = n->type;
1881
1882 neigh_release(n);
1883 if ((cast_type == RTN_BROADCAST) ||
1884 (cast_type == RTN_MULTICAST) ||
1885 (cast_type == RTN_ANYCAST))
1886 return cast_type;
1887 return RTN_UNICAST;
1888 }
1889
1890
1891 switch (ipv) {
1892 case 4:
1893 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1894 return RTN_BROADCAST;
1895 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1896 RTN_MULTICAST : RTN_UNICAST;
1897 case 6:
1898 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1899 RTN_MULTICAST : RTN_UNICAST;
1900 default:
1901
1902 return qeth_get_ether_cast_type(skb);
1903 }
1904 }
1905
1906 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1907 {
1908 int ipv = qeth_get_ip_version(skb);
1909 struct dst_entry *dst;
1910 int cast_type;
1911
1912 rcu_read_lock();
1913 dst = qeth_dst_check_rcu(skb, ipv);
1914 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1915 rcu_read_unlock();
1916
1917 return cast_type;
1918 }
1919
1920 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1921 {
1922 if (cast_type == RTN_MULTICAST)
1923 return QETH_CAST_MULTICAST;
1924 if (cast_type == RTN_ANYCAST)
1925 return QETH_CAST_ANYCAST;
1926 if (cast_type == RTN_BROADCAST)
1927 return QETH_CAST_BROADCAST;
1928 return QETH_CAST_UNICAST;
1929 }
1930
1931 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1932 struct qeth_hdr *hdr, struct sk_buff *skb,
1933 int ipv, unsigned int data_len)
1934 {
1935 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1936 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1937 struct qeth_card *card = queue->card;
1938 struct dst_entry *dst;
1939 int cast_type;
1940
1941 hdr->hdr.l3.length = data_len;
1942
1943 if (skb_is_gso(skb)) {
1944 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1945 } else {
1946 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1947
1948 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1949 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1950 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1951 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1952 iucv_trans_hdr(skb)->destUserID, 8);
1953 return;
1954 }
1955
1956 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1957 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1958
1959 if (ipv == 4)
1960 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1961 }
1962 }
1963
1964 if (ipv == 4 || IS_IQD(card)) {
1965
1966 if (skb_vlan_tag_present(skb)) {
1967 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1968 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1969 }
1970 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1971 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1972 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1973 }
1974
1975 rcu_read_lock();
1976 dst = qeth_dst_check_rcu(skb, ipv);
1977
1978 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1979 cast_type = RTN_UNICAST;
1980 else
1981 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1982 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1983
1984 if (ipv == 4) {
1985 struct rtable *rt = (struct rtable *) dst;
1986
1987 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
1988 rt_nexthop(rt, ip_hdr(skb)->daddr) :
1989 ip_hdr(skb)->daddr;
1990 } else if (ipv == 6) {
1991 struct rt6_info *rt = (struct rt6_info *) dst;
1992
1993 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
1994 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
1995 else
1996 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
1997
1998 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1999 if (!IS_IQD(card))
2000 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2001 } else {
2002
2003 l3_hdr->flags |= QETH_HDR_PASSTHRU;
2004 }
2005 rcu_read_unlock();
2006 }
2007
2008 static void qeth_l3_fixup_headers(struct sk_buff *skb)
2009 {
2010 struct iphdr *iph = ip_hdr(skb);
2011
2012
2013 if (skb->ip_summed == CHECKSUM_PARTIAL)
2014 iph->check = 0;
2015 if (skb_is_gso(skb)) {
2016 iph->tot_len = 0;
2017 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
2018 iph->daddr, 0);
2019 }
2020 }
2021
2022 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2023 struct qeth_qdio_out_q *queue, int ipv)
2024 {
2025 unsigned int hw_hdr_len;
2026 int rc;
2027
2028
2029 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
2030 sizeof(struct qeth_hdr);
2031 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2032 if (rc)
2033 return rc;
2034 skb_pull(skb, ETH_HLEN);
2035
2036 qeth_l3_fixup_headers(skb);
2037 return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
2038 }
2039
2040 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2041 struct net_device *dev)
2042 {
2043 struct qeth_card *card = dev->ml_priv;
2044 u16 txq = skb_get_queue_mapping(skb);
2045 int ipv = qeth_get_ip_version(skb);
2046 struct qeth_qdio_out_q *queue;
2047 int rc;
2048
2049 if (!skb_is_gso(skb))
2050 qdisc_skb_cb(skb)->pkt_len = skb->len;
2051 if (IS_IQD(card)) {
2052 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
2053
2054 if (card->options.sniffer)
2055 goto tx_drop;
2056 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2057 (card->options.cq == QETH_CQ_ENABLED &&
2058 skb->protocol != htons(ETH_P_AF_IUCV)))
2059 goto tx_drop;
2060 } else {
2061 queue = card->qdio.out_qs[txq];
2062 }
2063
2064 if (!(dev->flags & IFF_BROADCAST) &&
2065 qeth_l3_get_cast_type(skb) == RTN_BROADCAST)
2066 goto tx_drop;
2067
2068 if (ipv == 4 || IS_IQD(card))
2069 rc = qeth_l3_xmit(card, skb, queue, ipv);
2070 else
2071 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
2072
2073 if (!rc)
2074 return NETDEV_TX_OK;
2075
2076 tx_drop:
2077 QETH_TXQ_STAT_INC(queue, tx_dropped);
2078 kfree_skb(skb);
2079 return NETDEV_TX_OK;
2080 }
2081
2082 static void qeth_l3_set_rx_mode(struct net_device *dev)
2083 {
2084 struct qeth_card *card = dev->ml_priv;
2085
2086 schedule_work(&card->rx_mode_work);
2087 }
2088
2089
2090
2091
2092
2093
2094
2095
2096 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2097 {
2098 n->nud_state = NUD_NOARP;
2099 memcpy(n->ha, "FAKELL", 6);
2100 n->output = n->ops->connected_output;
2101 return 0;
2102 }
2103
2104 static int
2105 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2106 {
2107 if (np->tbl->family == AF_INET)
2108 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2109
2110 return 0;
2111 }
2112
2113 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2114 struct net_device *dev,
2115 netdev_features_t features)
2116 {
2117 if (qeth_get_ip_version(skb) != 4)
2118 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2119 return qeth_features_check(skb, dev, features);
2120 }
2121
2122 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
2123 struct net_device *sb_dev)
2124 {
2125 return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb),
2126 sb_dev);
2127 }
2128
2129 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
2130 struct net_device *sb_dev)
2131 {
2132 struct qeth_card *card = dev->ml_priv;
2133
2134 return qeth_get_priority_queue(card, skb);
2135 }
2136
2137 static const struct net_device_ops qeth_l3_netdev_ops = {
2138 .ndo_open = qeth_open,
2139 .ndo_stop = qeth_stop,
2140 .ndo_get_stats64 = qeth_get_stats64,
2141 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2142 .ndo_select_queue = qeth_l3_iqd_select_queue,
2143 .ndo_validate_addr = eth_validate_addr,
2144 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2145 .ndo_do_ioctl = qeth_do_ioctl,
2146 .ndo_fix_features = qeth_fix_features,
2147 .ndo_set_features = qeth_set_features,
2148 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2149 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2150 .ndo_tx_timeout = qeth_tx_timeout,
2151 };
2152
2153 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2154 .ndo_open = qeth_open,
2155 .ndo_stop = qeth_stop,
2156 .ndo_get_stats64 = qeth_get_stats64,
2157 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2158 .ndo_features_check = qeth_l3_osa_features_check,
2159 .ndo_select_queue = qeth_l3_osa_select_queue,
2160 .ndo_validate_addr = eth_validate_addr,
2161 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2162 .ndo_do_ioctl = qeth_do_ioctl,
2163 .ndo_fix_features = qeth_fix_features,
2164 .ndo_set_features = qeth_set_features,
2165 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2166 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2167 .ndo_tx_timeout = qeth_tx_timeout,
2168 .ndo_neigh_setup = qeth_l3_neigh_setup,
2169 };
2170
2171 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
2172 {
2173 unsigned int headroom;
2174 int rc;
2175
2176 if (IS_OSD(card) || IS_OSX(card)) {
2177 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2178 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2179 pr_info("qeth_l3: ignoring TR device\n");
2180 return -ENODEV;
2181 }
2182
2183 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2184
2185
2186 qeth_l3_get_unique_id(card);
2187 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2188 card->dev->dev_id = card->info.unique_id & 0xffff;
2189
2190 if (!IS_VM_NIC(card)) {
2191 card->dev->features |= NETIF_F_SG;
2192 card->dev->hw_features |= NETIF_F_TSO |
2193 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2194 card->dev->vlan_features |= NETIF_F_TSO |
2195 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2196 }
2197
2198 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2199 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2200 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2201 }
2202 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2203 card->dev->hw_features |= NETIF_F_TSO6;
2204 card->dev->vlan_features |= NETIF_F_TSO6;
2205 }
2206
2207
2208 if (card->dev->hw_features & NETIF_F_TSO6)
2209 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2210 else if (card->dev->hw_features & NETIF_F_TSO)
2211 headroom = sizeof(struct qeth_hdr_tso);
2212 else
2213 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2214 } else if (IS_IQD(card)) {
2215 card->dev->flags |= IFF_NOARP;
2216 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2217 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2218
2219 rc = qeth_l3_iqd_read_initial_mac(card);
2220 if (rc)
2221 goto out;
2222 } else
2223 return -ENODEV;
2224
2225 card->dev->needed_headroom = headroom;
2226 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2227 NETIF_F_HW_VLAN_CTAG_RX |
2228 NETIF_F_HW_VLAN_CTAG_FILTER;
2229
2230 netif_keep_dst(card->dev);
2231 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2232 netif_set_gso_max_size(card->dev,
2233 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2234
2235 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2236 rc = register_netdev(card->dev);
2237 if (!rc && carrier_ok)
2238 netif_carrier_on(card->dev);
2239
2240 out:
2241 if (rc)
2242 card->dev->netdev_ops = NULL;
2243 return rc;
2244 }
2245
2246 static const struct device_type qeth_l3_devtype = {
2247 .name = "qeth_layer3",
2248 .groups = qeth_l3_attr_groups,
2249 };
2250
2251 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2252 {
2253 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2254 int rc;
2255
2256 hash_init(card->ip_htable);
2257 mutex_init(&card->ip_lock);
2258 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
2259 dev_name(&gdev->dev));
2260 if (!card->cmd_wq)
2261 return -ENOMEM;
2262
2263 if (gdev->dev.type == &qeth_generic_devtype) {
2264 rc = qeth_l3_create_device_attributes(&gdev->dev);
2265 if (rc) {
2266 destroy_workqueue(card->cmd_wq);
2267 return rc;
2268 }
2269 }
2270
2271 hash_init(card->ip_mc_htable);
2272 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
2273 return 0;
2274 }
2275
2276 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2277 {
2278 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2279
2280 if (cgdev->dev.type == &qeth_generic_devtype)
2281 qeth_l3_remove_device_attributes(&cgdev->dev);
2282
2283 qeth_set_allowed_threads(card, 0, 1);
2284 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2285
2286 if (cgdev->state == CCWGROUP_ONLINE)
2287 qeth_l3_set_offline(cgdev);
2288
2289 cancel_work_sync(&card->close_dev_work);
2290 if (qeth_netdev_is_registered(card->dev))
2291 unregister_netdev(card->dev);
2292
2293 flush_workqueue(card->cmd_wq);
2294 destroy_workqueue(card->cmd_wq);
2295 qeth_l3_clear_ip_htable(card, 0);
2296 qeth_l3_clear_ipato_list(card);
2297 }
2298
2299 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2300 {
2301 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2302 struct net_device *dev = card->dev;
2303 int rc = 0;
2304 bool carrier_ok;
2305
2306 mutex_lock(&card->discipline_mutex);
2307 mutex_lock(&card->conf_mutex);
2308 QETH_CARD_TEXT(card, 2, "setonlin");
2309
2310 rc = qeth_core_hardsetup_card(card, &carrier_ok);
2311 if (rc) {
2312 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2313 rc = -ENODEV;
2314 goto out_remove;
2315 }
2316
2317 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2318 if (card->info.hwtrap &&
2319 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2320 card->info.hwtrap = 0;
2321 } else
2322 card->info.hwtrap = 0;
2323
2324 card->state = CARD_STATE_HARDSETUP;
2325 qeth_print_status_message(card);
2326
2327
2328 QETH_CARD_TEXT(card, 2, "softsetp");
2329
2330 rc = qeth_l3_setadapter_parms(card);
2331 if (rc)
2332 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2333 if (!card->options.sniffer) {
2334 rc = qeth_l3_start_ipassists(card);
2335 if (rc) {
2336 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2337 goto out_remove;
2338 }
2339 rc = qeth_l3_setrouting_v4(card);
2340 if (rc)
2341 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
2342 rc = qeth_l3_setrouting_v6(card);
2343 if (rc)
2344 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
2345 }
2346
2347 rc = qeth_init_qdio_queues(card);
2348 if (rc) {
2349 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2350 rc = -ENODEV;
2351 goto out_remove;
2352 }
2353 card->state = CARD_STATE_SOFTSETUP;
2354
2355 qeth_set_allowed_threads(card, 0xffffffff, 0);
2356 qeth_l3_recover_ip(card);
2357
2358 if (!qeth_netdev_is_registered(dev)) {
2359 rc = qeth_l3_setup_netdev(card, carrier_ok);
2360 if (rc)
2361 goto out_remove;
2362 } else {
2363 rtnl_lock();
2364 if (carrier_ok)
2365 netif_carrier_on(dev);
2366 else
2367 netif_carrier_off(dev);
2368
2369 netif_device_attach(dev);
2370 qeth_enable_hw_features(dev);
2371
2372 if (card->info.open_when_online) {
2373 card->info.open_when_online = 0;
2374 dev_open(dev, NULL);
2375 }
2376 rtnl_unlock();
2377 }
2378 qeth_trace_features(card);
2379
2380 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2381 mutex_unlock(&card->conf_mutex);
2382 mutex_unlock(&card->discipline_mutex);
2383 return 0;
2384 out_remove:
2385 qeth_l3_stop_card(card);
2386 qeth_stop_channel(&card->data);
2387 qeth_stop_channel(&card->write);
2388 qeth_stop_channel(&card->read);
2389 qdio_free(CARD_DDEV(card));
2390
2391 mutex_unlock(&card->conf_mutex);
2392 mutex_unlock(&card->discipline_mutex);
2393 return rc;
2394 }
2395
2396 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2397 int recovery_mode)
2398 {
2399 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2400 int rc = 0, rc2 = 0, rc3 = 0;
2401
2402 mutex_lock(&card->discipline_mutex);
2403 mutex_lock(&card->conf_mutex);
2404 QETH_CARD_TEXT(card, 3, "setoffl");
2405
2406 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2407 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2408 card->info.hwtrap = 1;
2409 }
2410
2411 rtnl_lock();
2412 card->info.open_when_online = card->dev->flags & IFF_UP;
2413 dev_close(card->dev);
2414 netif_device_detach(card->dev);
2415 netif_carrier_off(card->dev);
2416 rtnl_unlock();
2417
2418 qeth_l3_stop_card(card);
2419 if (card->options.cq == QETH_CQ_ENABLED) {
2420 rtnl_lock();
2421 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2422 rtnl_unlock();
2423 }
2424
2425 rc = qeth_stop_channel(&card->data);
2426 rc2 = qeth_stop_channel(&card->write);
2427 rc3 = qeth_stop_channel(&card->read);
2428 if (!rc)
2429 rc = (rc2) ? rc2 : rc3;
2430 if (rc)
2431 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2432 qdio_free(CARD_DDEV(card));
2433
2434
2435 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2436 mutex_unlock(&card->conf_mutex);
2437 mutex_unlock(&card->discipline_mutex);
2438 return 0;
2439 }
2440
2441 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2442 {
2443 return __qeth_l3_set_offline(cgdev, 0);
2444 }
2445
2446 static int qeth_l3_recover(void *ptr)
2447 {
2448 struct qeth_card *card;
2449 int rc = 0;
2450
2451 card = (struct qeth_card *) ptr;
2452 QETH_CARD_TEXT(card, 2, "recover1");
2453 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2454 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2455 return 0;
2456 QETH_CARD_TEXT(card, 2, "recover2");
2457 dev_warn(&card->gdev->dev,
2458 "A recovery process has been started for the device\n");
2459 __qeth_l3_set_offline(card->gdev, 1);
2460 rc = qeth_l3_set_online(card->gdev);
2461 if (!rc)
2462 dev_info(&card->gdev->dev,
2463 "Device successfully recovered!\n");
2464 else {
2465 ccwgroup_set_offline(card->gdev);
2466 dev_warn(&card->gdev->dev, "The qeth device driver "
2467 "failed to recover an error on the device\n");
2468 }
2469 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2470 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2471 return 0;
2472 }
2473
2474
2475 static int qeth_l3_control_event(struct qeth_card *card,
2476 struct qeth_ipa_cmd *cmd)
2477 {
2478 return 1;
2479 }
2480
2481 struct qeth_discipline qeth_l3_discipline = {
2482 .devtype = &qeth_l3_devtype,
2483 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2484 .recover = qeth_l3_recover,
2485 .setup = qeth_l3_probe_device,
2486 .remove = qeth_l3_remove_device,
2487 .set_online = qeth_l3_set_online,
2488 .set_offline = qeth_l3_set_offline,
2489 .do_ioctl = qeth_l3_do_ioctl,
2490 .control_event_handler = qeth_l3_control_event,
2491 };
2492 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2493
2494 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2495 struct qeth_ipaddr *addr,
2496 unsigned long event)
2497 {
2498 switch (event) {
2499 case NETDEV_UP:
2500 qeth_l3_modify_ip(card, addr, true);
2501 return NOTIFY_OK;
2502 case NETDEV_DOWN:
2503 qeth_l3_modify_ip(card, addr, false);
2504 return NOTIFY_OK;
2505 default:
2506 return NOTIFY_DONE;
2507 }
2508 }
2509
2510 struct qeth_l3_ip_event_work {
2511 struct work_struct work;
2512 struct qeth_card *card;
2513 struct qeth_ipaddr addr;
2514 };
2515
2516 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2517
2518 static void qeth_l3_add_ip_worker(struct work_struct *work)
2519 {
2520 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2521
2522 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2523 kfree(work);
2524 }
2525
2526 static void qeth_l3_delete_ip_worker(struct work_struct *work)
2527 {
2528 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2529
2530 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2531 kfree(work);
2532 }
2533
2534 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2535 {
2536 if (is_vlan_dev(dev))
2537 dev = vlan_dev_real_dev(dev);
2538 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2539 dev->netdev_ops == &qeth_l3_netdev_ops)
2540 return (struct qeth_card *) dev->ml_priv;
2541 return NULL;
2542 }
2543
2544 static int qeth_l3_ip_event(struct notifier_block *this,
2545 unsigned long event, void *ptr)
2546 {
2547
2548 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2549 struct net_device *dev = ifa->ifa_dev->dev;
2550 struct qeth_ipaddr addr;
2551 struct qeth_card *card;
2552
2553 if (dev_net(dev) != &init_net)
2554 return NOTIFY_DONE;
2555
2556 card = qeth_l3_get_card_from_dev(dev);
2557 if (!card)
2558 return NOTIFY_DONE;
2559 QETH_CARD_TEXT(card, 3, "ipevent");
2560
2561 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2562 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2563 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2564
2565 return qeth_l3_handle_ip_event(card, &addr, event);
2566 }
2567
2568 static struct notifier_block qeth_l3_ip_notifier = {
2569 qeth_l3_ip_event,
2570 NULL,
2571 };
2572
2573 static int qeth_l3_ip6_event(struct notifier_block *this,
2574 unsigned long event, void *ptr)
2575 {
2576 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2577 struct net_device *dev = ifa->idev->dev;
2578 struct qeth_l3_ip_event_work *ip_work;
2579 struct qeth_card *card;
2580
2581 if (event != NETDEV_UP && event != NETDEV_DOWN)
2582 return NOTIFY_DONE;
2583
2584 card = qeth_l3_get_card_from_dev(dev);
2585 if (!card)
2586 return NOTIFY_DONE;
2587 QETH_CARD_TEXT(card, 3, "ip6event");
2588 if (!qeth_is_supported(card, IPA_IPV6))
2589 return NOTIFY_DONE;
2590
2591 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2592 if (!ip_work)
2593 return NOTIFY_DONE;
2594
2595 if (event == NETDEV_UP)
2596 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2597 else
2598 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2599
2600 ip_work->card = card;
2601 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2602 QETH_PROT_IPV6);
2603 ip_work->addr.u.a6.addr = ifa->addr;
2604 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2605
2606 queue_work(card->cmd_wq, &ip_work->work);
2607 return NOTIFY_OK;
2608 }
2609
2610 static struct notifier_block qeth_l3_ip6_notifier = {
2611 qeth_l3_ip6_event,
2612 NULL,
2613 };
2614
2615 static int qeth_l3_register_notifiers(void)
2616 {
2617 int rc;
2618
2619 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2620 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2621 if (rc)
2622 return rc;
2623 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2624 if (rc) {
2625 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2626 return rc;
2627 }
2628 return 0;
2629 }
2630
2631 static void qeth_l3_unregister_notifiers(void)
2632 {
2633 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2634 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2635 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2636 }
2637
2638 static int __init qeth_l3_init(void)
2639 {
2640 pr_info("register layer 3 discipline\n");
2641 return qeth_l3_register_notifiers();
2642 }
2643
2644 static void __exit qeth_l3_exit(void)
2645 {
2646 qeth_l3_unregister_notifiers();
2647 pr_info("unregister layer 3 discipline\n");
2648 }
2649
2650 module_init(qeth_l3_init);
2651 module_exit(qeth_l3_exit);
2652 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2653 MODULE_DESCRIPTION("qeth layer 3 discipline");
2654 MODULE_LICENSE("GPL");