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s390/qeth: check size of required HW header cache object
[linux-block.git] / drivers / s390 / net / qeth_l3_main.c
CommitLineData
ab9953ff 1// SPDX-License-Identifier: GPL-2.0
4a71df50 2/*
bbcfcdc8 3 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
74eacdb9
FB		 10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
4a71df50
FB		 13#include <linux/module.h>
14#include <linux/moduleparam.h>
7ff0bcf6 15#include <linux/bitops.h>
4a71df50
FB		 16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
19#include <linux/etherdevice.h>
4a71df50 20#include <linux/ip.h>
1f979123 21#include <linux/in.h>
64ef8957 22#include <linux/ipv6.h>
4a71df50
FB		 23#include <linux/inetdevice.h>
24#include <linux/igmp.h>
5a0e3ad6 25#include <linux/slab.h>
910a0a8f 26#include <linux/if_ether.h>
7ff0bcf6 27#include <linux/if_vlan.h>
910a0a8f 28#include <linux/skbuff.h>
4a71df50
FB		 29
30#include <net/ip.h>
31#include <net/arp.h>
87e7597b 32#include <net/route.h>
1f979123 33#include <net/ipv6.h>
910a0a8f 34#include <net/ip6_route.h>
87e7597b 35#include <net/ip6_fib.h>
64ef8957 36#include <net/ip6_checksum.h>
b3332930 37#include <net/iucv/af_iucv.h>
5f78e29c 38#include <linux/hashtable.h>
4a71df50 39
4a71df50 40#include "qeth_l3.h"
4a71df50 41
d0ddf30f 42
4a71df50 43static int qeth_l3_set_offline(struct ccwgroup_device *);
4a71df50 44static int qeth_l3_stop(struct net_device *);
00c163f1 45static void qeth_l3_set_rx_mode(struct net_device *dev);
4a71df50
FB		 46static int qeth_l3_register_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
48static int qeth_l3_deregister_addr_entry(struct qeth_card *,
49 struct qeth_ipaddr *);
4a71df50 50
56530d68 51static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
4a71df50 52{
5f78e29c 53 sprintf(buf, "%pI4", addr);
4a71df50
FB		 54}
55
56530d68 56static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
4a71df50 57{
963a9fd2 58 sprintf(buf, "%pI6", addr);
4a71df50
FB		 59}
60
4a71df50
FB		 61void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
62 char *buf)
63{
64 if (proto == QETH_PROT_IPV4)
65 qeth_l3_ipaddr4_to_string(addr, buf);
66 else if (proto == QETH_PROT_IPV6)
67 qeth_l3_ipaddr6_to_string(addr, buf);
68}
69
1617dae2 70static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
d66b1c0d
JW		 71{
72 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
73
74 if (addr)
75 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
76 return addr;
77}
78
c5c48c58
JW		 79static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
80 struct qeth_ipaddr *query)
81{
82 u64 key = qeth_l3_ipaddr_hash(query);
83 struct qeth_ipaddr *addr;
84
85 if (query->is_multicast) {
86 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
87 if (qeth_l3_addr_match_ip(addr, query))
88 return addr;
89 } else {
90 hash_for_each_possible(card->ip_htable, addr, hnode, key)
91 if (qeth_l3_addr_match_ip(addr, query))
92 return addr;
93 }
94 return NULL;
95}
96
4a71df50
FB		 97static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
98{
99 int i, j;
100 u8 octet;
101
102 for (i = 0; i < len; ++i) {
103 octet = addr[i];
104 for (j = 7; j >= 0; --j) {
105 bits[i*8 + j] = octet & 1;
106 octet >>= 1;
107 }
108 }
109}
110
02f510f3
JW		 111static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
112 struct qeth_ipaddr *addr)
4a71df50
FB		 113{
114 struct qeth_ipato_entry *ipatoe;
115 u8 addr_bits[128] = {0, };
116 u8 ipatoe_bits[128] = {0, };
117 int rc = 0;
118
119 if (!card->ipato.enabled)
1a363b0d 120 return false;
b22d73d6 121 if (addr->type != QETH_IP_TYPE_NORMAL)
1a363b0d 122 return false;
4a71df50
FB		 123
124 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
125 (addr->proto == QETH_PROT_IPV4)? 4:16);
126 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
127 if (addr->proto != ipatoe->proto)
128 continue;
129 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
130 (ipatoe->proto == QETH_PROT_IPV4) ?
131 4 : 16);
132 if (addr->proto == QETH_PROT_IPV4)
133 rc = !memcmp(addr_bits, ipatoe_bits,
134 min(32, ipatoe->mask_bits));
135 else
136 rc = !memcmp(addr_bits, ipatoe_bits,
137 min(128, ipatoe->mask_bits));
138 if (rc)
139 break;
140 }
141 /* invert? */
142 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
143 rc = !rc;
144 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
145 rc = !rc;
146
147 return rc;
148}
149
1617dae2
JW		 150static int qeth_l3_delete_ip(struct qeth_card *card,
151 struct qeth_ipaddr *tmp_addr)
4a71df50 152{
4a71df50 153 int rc = 0;
5f78e29c 154 struct qeth_ipaddr *addr;
4a71df50 155
1617dae2
JW		 156 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
157 QETH_CARD_TEXT(card, 2, "delrxip");
158 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
159 QETH_CARD_TEXT(card, 2, "delvipa");
160 else
161 QETH_CARD_TEXT(card, 2, "delip");
4a71df50 162
5f78e29c
LD		 163 if (tmp_addr->proto == QETH_PROT_IPV4)
164 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
4a71df50 165 else {
5f78e29c
LD		 166 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
167 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
4a71df50 168 }
5f78e29c 169
c5c48c58
JW		 170 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
171 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
5f78e29c
LD		 172 return -ENOENT;
173
174 addr->ref_counter--;
4964c66f 175 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
5f78e29c
LD		 176 return rc;
177 if (addr->in_progress)
178 return -EINPROGRESS;
179
98d823ab
JW		 180 if (qeth_card_hw_is_reachable(card))
181 rc = qeth_l3_deregister_addr_entry(card, addr);
5f78e29c
LD		 182
183 hash_del(&addr->hnode);
184 kfree(addr);
185
4a71df50
FB		 186 return rc;
187}
188
1617dae2 189static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
4a71df50 190{
4a71df50 191 int rc = 0;
5f78e29c 192 struct qeth_ipaddr *addr;
c5c48c58 193 char buf[40];
4a71df50 194
1617dae2
JW		 195 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
196 QETH_CARD_TEXT(card, 2, "addrxip");
197 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
198 QETH_CARD_TEXT(card, 2, "addvipa");
199 else
200 QETH_CARD_TEXT(card, 2, "addip");
5f78e29c
LD		 201
202 if (tmp_addr->proto == QETH_PROT_IPV4)
203 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
4a71df50 204 else {
5f78e29c
LD		 205 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
206 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
207 }
208
c5c48c58
JW		 209 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
210 if (addr) {
211 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
212 return -EADDRINUSE;
213 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
214 addr->ref_counter++;
215 return 0;
216 }
217 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
218 buf);
219 dev_warn(&card->gdev->dev,
220 "Registering IP address %s failed\n", buf);
221 return -EADDRINUSE;
222 } else {
5f78e29c
LD		 223 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
224 if (!addr)
225 return -ENOMEM;
226
227 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
228 addr->ref_counter = 1;
229
b22d73d6 230 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
5f78e29c 231 QETH_CARD_TEXT(card, 2, "tkovaddr");
b1d5e36b 232 addr->ipato = 1;
5f78e29c
LD		 233 }
234 hash_add(card->ip_htable, &addr->hnode,
235 qeth_l3_ipaddr_hash(addr));
236
a7531c1c
UB		 237 if (!qeth_card_hw_is_reachable(card)) {
238 addr->disp_flag = QETH_DISP_ADDR_ADD;
239 return 0;
240 }
241
5f78e29c
LD		 242 /* qeth_l3_register_addr_entry can go to sleep
243 * if we add a IPV4 addr. It is caused by the reason
244 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
245 * Thus we should unlock spinlock, and make a protection
246 * using in_progress variable to indicate that there is
247 * an hardware operation with this IPV4 address
248 */
249 if (addr->proto == QETH_PROT_IPV4) {
250 addr->in_progress = 1;
251 spin_unlock_bh(&card->ip_lock);
252 rc = qeth_l3_register_addr_entry(card, addr);
253 spin_lock_bh(&card->ip_lock);
254 addr->in_progress = 0;
255 } else
256 rc = qeth_l3_register_addr_entry(card, addr);
257
258 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
259 (rc == IPA_RC_LAN_OFFLINE)) {
260 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
261 if (addr->ref_counter < 1) {
14d066c3
JW		 262 qeth_l3_deregister_addr_entry(card, addr);
263 hash_del(&addr->hnode);
5f78e29c
LD		 264 kfree(addr);
265 }
266 } else {
267 hash_del(&addr->hnode);
268 kfree(addr);
269 }
4a71df50 270 }
4a71df50
FB		 271 return rc;
272}
273
5f78e29c 274static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
4a71df50
FB		 275{
276 struct qeth_ipaddr *addr;
5f78e29c
LD		 277 struct hlist_node *tmp;
278 int i;
4a71df50 279
5f78e29c 280 QETH_CARD_TEXT(card, 4, "clearip");
4a71df50 281
5f78e29c 282 if (recover && card->options.sniffer)
76b11f8e 283 return;
f154b79c 284
5f78e29c
LD		 285 spin_lock_bh(&card->ip_lock);
286
287 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
288 if (!recover) {
289 hash_del(&addr->hnode);
290 kfree(addr);
4a71df50
FB		 291 continue;
292 }
5f78e29c 293 addr->disp_flag = QETH_DISP_ADDR_ADD;
4a71df50 294 }
4a71df50 295
5f78e29c 296 spin_unlock_bh(&card->ip_lock);
4a71df50 297
5f78e29c
LD		 298 spin_lock_bh(&card->mclock);
299
300 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
301 hash_del(&addr->hnode);
4a71df50
FB		 302 kfree(addr);
303 }
304
5f78e29c
LD		 305 spin_unlock_bh(&card->mclock);
306
4a71df50 307
5f78e29c
LD		 308}
309static void qeth_l3_recover_ip(struct qeth_card *card)
4a71df50 310{
5f78e29c
LD		 311 struct qeth_ipaddr *addr;
312 struct hlist_node *tmp;
313 int i;
314 int rc;
4a71df50 315
a7531c1c 316 QETH_CARD_TEXT(card, 4, "recovrip");
5f78e29c
LD		 317
318 spin_lock_bh(&card->ip_lock);
319
320 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
98d823ab 321 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
5f78e29c
LD		 322 if (addr->proto == QETH_PROT_IPV4) {
323 addr->in_progress = 1;
324 spin_unlock_bh(&card->ip_lock);
325 rc = qeth_l3_register_addr_entry(card, addr);
326 spin_lock_bh(&card->ip_lock);
327 addr->in_progress = 0;
328 } else
329 rc = qeth_l3_register_addr_entry(card, addr);
330
331 if (!rc) {
332 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
a7531c1c 333 if (addr->ref_counter < 1)
5f78e29c 334 qeth_l3_delete_ip(card, addr);
5f78e29c
LD		 335 } else {
336 hash_del(&addr->hnode);
337 kfree(addr);
338 }
339 }
340 }
4a71df50 341
5f78e29c 342 spin_unlock_bh(&card->ip_lock);
4a71df50 343
4a71df50
FB		 344}
345
346static int qeth_l3_send_setdelmc(struct qeth_card *card,
347 struct qeth_ipaddr *addr, int ipacmd)
348{
349 int rc;
350 struct qeth_cmd_buffer *iob;
351 struct qeth_ipa_cmd *cmd;
352
847a50fd 353 QETH_CARD_TEXT(card, 4, "setdelmc");
4a71df50
FB		 354
355 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
1aec42bc
TR		 356 if (!iob)
357 return -ENOMEM;
ff5caa7a 358 cmd = __ipa_cmd(iob);
99f0b85d 359 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
4a71df50
FB		 360 if (addr->proto == QETH_PROT_IPV6)
361 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
362 sizeof(struct in6_addr));
363 else
364 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
365
366 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
367
368 return rc;
369}
370
371static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
372{
373 int i, j;
374 for (i = 0; i < 16; i++) {
375 j = (len) - (i * 8);
376 if (j >= 8)
377 netmask[i] = 0xff;
378 else if (j > 0)
379 netmask[i] = (u8)(0xFF00 >> j);
380 else
381 netmask[i] = 0;
382 }
383}
384
b1d5e36b
JW		 385static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
386{
387 switch (addr->type) {
388 case QETH_IP_TYPE_RXIP:
389 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
390 case QETH_IP_TYPE_VIPA:
391 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
392 QETH_IPA_DELIP_VIPA_FLAG;
393 default:
394 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
395 }
396}
397
4a71df50 398static int qeth_l3_send_setdelip(struct qeth_card *card,
b1d5e36b
JW		 399 struct qeth_ipaddr *addr,
400 enum qeth_ipa_cmds ipacmd)
4a71df50 401{
4a71df50
FB		 402 struct qeth_cmd_buffer *iob;
403 struct qeth_ipa_cmd *cmd;
404 __u8 netmask[16];
b1d5e36b 405 u32 flags;
4a71df50 406
847a50fd 407 QETH_CARD_TEXT(card, 4, "setdelip");
4a71df50
FB		 408
409 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
1aec42bc
TR		 410 if (!iob)
411 return -ENOMEM;
ff5caa7a 412 cmd = __ipa_cmd(iob);
b1d5e36b
JW		 413
414 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
415 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
416
4a71df50
FB		 417 if (addr->proto == QETH_PROT_IPV6) {
418 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
419 sizeof(struct in6_addr));
420 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
421 memcpy(cmd->data.setdelip6.mask, netmask,
422 sizeof(struct in6_addr));
423 cmd->data.setdelip6.flags = flags;
424 } else {
425 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
426 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
427 cmd->data.setdelip4.flags = flags;
428 }
429
b1d5e36b 430 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
4a71df50
FB		 431}
432
433static int qeth_l3_send_setrouting(struct qeth_card *card,
434 enum qeth_routing_types type, enum qeth_prot_versions prot)
435{
436 int rc;
437 struct qeth_ipa_cmd *cmd;
438 struct qeth_cmd_buffer *iob;
439
847a50fd 440 QETH_CARD_TEXT(card, 4, "setroutg");
4a71df50 441 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
1aec42bc
TR		 442 if (!iob)
443 return -ENOMEM;
ff5caa7a 444 cmd = __ipa_cmd(iob);
4a71df50
FB		 445 cmd->data.setrtg.type = (type);
446 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
447
448 return rc;
449}
450
82e2e782 451static int qeth_l3_correct_routing_type(struct qeth_card *card,
4a71df50
FB		 452 enum qeth_routing_types *type, enum qeth_prot_versions prot)
453{
454 if (card->info.type == QETH_CARD_TYPE_IQD) {
455 switch (*type) {
456 case NO_ROUTER:
457 case PRIMARY_CONNECTOR:
458 case SECONDARY_CONNECTOR:
459 case MULTICAST_ROUTER:
82e2e782 460 return 0;
4a71df50
FB		 461 default:
462 goto out_inval;
463 }
464 } else {
465 switch (*type) {
466 case NO_ROUTER:
467 case PRIMARY_ROUTER:
468 case SECONDARY_ROUTER:
82e2e782 469 return 0;
4a71df50
FB		 470 case MULTICAST_ROUTER:
471 if (qeth_is_ipafunc_supported(card, prot,
472 IPA_OSA_MC_ROUTER))
82e2e782 473 return 0;
4a71df50
FB		 474 default:
475 goto out_inval;
476 }
477 }
478out_inval:
4a71df50 479 *type = NO_ROUTER;
82e2e782 480 return -EINVAL;
4a71df50
FB		 481}
482
483int qeth_l3_setrouting_v4(struct qeth_card *card)
484{
485 int rc;
486
847a50fd 487 QETH_CARD_TEXT(card, 3, "setrtg4");
4a71df50 488
82e2e782 489 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
4a71df50 490 QETH_PROT_IPV4);
82e2e782
SR		 491 if (rc)
492 return rc;
4a71df50
FB		 493
494 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
495 QETH_PROT_IPV4);
496 if (rc) {
497 card->options.route4.type = NO_ROUTER;
14cc21b6
FB		 498 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
499 " on %s. Type set to 'no router'.\n", rc,
500 QETH_CARD_IFNAME(card));
4a71df50
FB		 501 }
502 return rc;
503}
504
505int qeth_l3_setrouting_v6(struct qeth_card *card)
506{
507 int rc = 0;
508
847a50fd 509 QETH_CARD_TEXT(card, 3, "setrtg6");
4a71df50
FB		 510
511 if (!qeth_is_supported(card, IPA_IPV6))
512 return 0;
82e2e782 513 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
4a71df50 514 QETH_PROT_IPV6);
82e2e782
SR		 515 if (rc)
516 return rc;
4a71df50
FB		 517
518 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
519 QETH_PROT_IPV6);
520 if (rc) {
521 card->options.route6.type = NO_ROUTER;
14cc21b6
FB		 522 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
523 " on %s. Type set to 'no router'.\n", rc,
524 QETH_CARD_IFNAME(card));
4a71df50 525 }
4a71df50
FB		 526 return rc;
527}
528
529/*
530 * IP address takeover related functions
531 */
02f510f3
JW		 532
533/**
534 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
535 *
536 * Caller must hold ip_lock.
537 */
538void qeth_l3_update_ipato(struct qeth_card *card)
539{
540 struct qeth_ipaddr *addr;
541 unsigned int i;
542
543 hash_for_each(card->ip_htable, i, addr, hnode) {
544 if (addr->type != QETH_IP_TYPE_NORMAL)
545 continue;
b1d5e36b 546 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
02f510f3
JW		 547 }
548}
549
4a71df50
FB		 550static void qeth_l3_clear_ipato_list(struct qeth_card *card)
551{
4a71df50 552 struct qeth_ipato_entry *ipatoe, *tmp;
4a71df50 553
5f78e29c
LD		 554 spin_lock_bh(&card->ip_lock);
555
4a71df50
FB		 556 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
557 list_del(&ipatoe->entry);
558 kfree(ipatoe);
559 }
5f78e29c 560
02f510f3 561 qeth_l3_update_ipato(card);
5f78e29c 562 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 563}
564
565int qeth_l3_add_ipato_entry(struct qeth_card *card,
566 struct qeth_ipato_entry *new)
567{
568 struct qeth_ipato_entry *ipatoe;
4a71df50
FB		 569 int rc = 0;
570
847a50fd 571 QETH_CARD_TEXT(card, 2, "addipato");
5f78e29c
LD		 572
573 spin_lock_bh(&card->ip_lock);
574
4a71df50
FB		 575 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
576 if (ipatoe->proto != new->proto)
577 continue;
578 if (!memcmp(ipatoe->addr, new->addr,
579 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
580 (ipatoe->mask_bits == new->mask_bits)) {
4a71df50
FB		 581 rc = -EEXIST;
582 break;
583 }
584 }
5f78e29c 585
02f510f3 586 if (!rc) {
4a71df50 587 list_add_tail(&new->entry, &card->ipato.entries);
02f510f3
JW		 588 qeth_l3_update_ipato(card);
589 }
4a71df50 590
5f78e29c
LD		 591 spin_unlock_bh(&card->ip_lock);
592
4a71df50
FB		 593 return rc;
594}
595
b9ea5250
JW		 596int qeth_l3_del_ipato_entry(struct qeth_card *card,
597 enum qeth_prot_versions proto, u8 *addr,
598 int mask_bits)
4a71df50
FB		 599{
600 struct qeth_ipato_entry *ipatoe, *tmp;
b9ea5250 601 int rc = -ENOENT;
4a71df50 602
847a50fd 603 QETH_CARD_TEXT(card, 2, "delipato");
5f78e29c
LD		 604
605 spin_lock_bh(&card->ip_lock);
606
4a71df50
FB		 607 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
608 if (ipatoe->proto != proto)
609 continue;
610 if (!memcmp(ipatoe->addr, addr,
611 (proto == QETH_PROT_IPV4)? 4:16) &&
612 (ipatoe->mask_bits == mask_bits)) {
613 list_del(&ipatoe->entry);
02f510f3 614 qeth_l3_update_ipato(card);
4a71df50 615 kfree(ipatoe);
b9ea5250 616 rc = 0;
4a71df50
FB		 617 }
618 }
5f78e29c
LD		 619
620 spin_unlock_bh(&card->ip_lock);
b9ea5250 621 return rc;
4a71df50
FB		 622}
623
1617dae2
JW		 624int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
625 enum qeth_ip_types type,
626 enum qeth_prot_versions proto)
4a71df50 627{
1617dae2 628 struct qeth_ipaddr addr;
b9ea5250 629 int rc;
4a71df50 630
1617dae2
JW		 631 qeth_l3_init_ipaddr(&addr, type, proto);
632 if (proto == QETH_PROT_IPV4)
633 memcpy(&addr.u.a4.addr, ip, 4);
634 else
635 memcpy(&addr.u.a6.addr, ip, 16);
5f78e29c
LD		 636
637 spin_lock_bh(&card->ip_lock);
1617dae2 638 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
5f78e29c 639 spin_unlock_bh(&card->ip_lock);
5f78e29c 640 return rc;
4a71df50
FB		 641}
642
1617dae2 643int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
4a71df50 644{
1617dae2
JW		 645 struct qeth_ipaddr addr;
646 int rc, i;
4a71df50 647
1617dae2
JW		 648 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
649 addr.u.a6.addr.s6_addr[0] = 0xfe;
650 addr.u.a6.addr.s6_addr[1] = 0x80;
651 for (i = 0; i < 8; i++)
652 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
5f78e29c
LD		 653
654 spin_lock_bh(&card->ip_lock);
1617dae2 655 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
5f78e29c 656 spin_unlock_bh(&card->ip_lock);
b9ea5250 657 return rc;
4a71df50
FB		 658}
659
660static int qeth_l3_register_addr_entry(struct qeth_card *card,
661 struct qeth_ipaddr *addr)
662{
663 char buf[50];
664 int rc = 0;
665 int cnt = 3;
666
5f78e29c 667
4a71df50 668 if (addr->proto == QETH_PROT_IPV4) {
847a50fd
CO		 669 QETH_CARD_TEXT(card, 2, "setaddr4");
670 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
4a71df50 671 } else if (addr->proto == QETH_PROT_IPV6) {
847a50fd
CO		 672 QETH_CARD_TEXT(card, 2, "setaddr6");
673 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
674 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
4a71df50 675 } else {
847a50fd
CO		 676 QETH_CARD_TEXT(card, 2, "setaddr?");
677 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
4a71df50
FB		 678 }
679 do {
680 if (addr->is_multicast)
681 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
682 else
b1d5e36b 683 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
4a71df50 684 if (rc)
847a50fd 685 QETH_CARD_TEXT(card, 2, "failed");
4a71df50
FB		 686 } while ((--cnt > 0) && rc);
687 if (rc) {
847a50fd 688 QETH_CARD_TEXT(card, 2, "FAILED");
4a71df50 689 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
74eacdb9
FB		 690 dev_warn(&card->gdev->dev,
691 "Registering IP address %s failed\n", buf);
4a71df50
FB		 692 }
693 return rc;
694}
695
696static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
697 struct qeth_ipaddr *addr)
698{
699 int rc = 0;
700
701 if (addr->proto == QETH_PROT_IPV4) {
847a50fd
CO		 702 QETH_CARD_TEXT(card, 2, "deladdr4");
703 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
4a71df50 704 } else if (addr->proto == QETH_PROT_IPV6) {
847a50fd
CO		 705 QETH_CARD_TEXT(card, 2, "deladdr6");
706 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
707 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
4a71df50 708 } else {
847a50fd
CO		 709 QETH_CARD_TEXT(card, 2, "deladdr?");
710 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
4a71df50
FB		 711 }
712 if (addr->is_multicast)
713 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
714 else
b1d5e36b 715 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
c4cef07c 716 if (rc)
847a50fd 717 QETH_CARD_TEXT(card, 2, "failed");
4a71df50
FB		 718
719 return rc;
720}
721
4a71df50
FB		 722static int qeth_l3_setadapter_parms(struct qeth_card *card)
723{
699d3fe5 724 int rc = 0;
4a71df50 725
d11ba0c4 726 QETH_DBF_TEXT(SETUP, 2, "setadprm");
4a71df50 727
4a71df50
FB		 728 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
729 rc = qeth_setadpparms_change_macaddr(card);
730 if (rc)
74eacdb9 731 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
6ea2fde1 732 " address failed\n");
4a71df50
FB		 733 }
734
4a71df50
FB		 735 return rc;
736}
737
4a71df50
FB		 738static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
739{
740 int rc;
741
847a50fd 742 QETH_CARD_TEXT(card, 3, "ipaarp");
4a71df50
FB		 743
744 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
74eacdb9
FB		 745 dev_info(&card->gdev->dev,
746 "ARP processing not supported on %s!\n",
747 QETH_CARD_IFNAME(card));
4a71df50
FB		 748 return 0;
749 }
4d7def2a
TR		 750 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
751 IPA_CMD_ASS_START, 0);
4a71df50 752 if (rc) {
74eacdb9
FB		 753 dev_warn(&card->gdev->dev,
754 "Starting ARP processing support for %s failed\n",
755 QETH_CARD_IFNAME(card));
4a71df50
FB		 756 }
757 return rc;
758}
759
4a71df50
FB		 760static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
761{
762 int rc;
763
847a50fd 764 QETH_CARD_TEXT(card, 3, "stsrcmac");
4a71df50 765
4a71df50 766 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
74eacdb9 767 dev_info(&card->gdev->dev,
fe94e2e0 768 "Inbound source MAC-address not supported on %s\n",
74eacdb9 769 QETH_CARD_IFNAME(card));
4a71df50
FB		 770 return -EOPNOTSUPP;
771 }
772
4d7def2a 773 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
4a71df50
FB		 774 IPA_CMD_ASS_START, 0);
775 if (rc)
74eacdb9 776 dev_warn(&card->gdev->dev,
fe94e2e0 777 "Starting source MAC-address support for %s failed\n",
74eacdb9 778 QETH_CARD_IFNAME(card));
4a71df50
FB		 779 return rc;
780}
781
782static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
783{
784 int rc = 0;
785
847a50fd 786 QETH_CARD_TEXT(card, 3, "strtvlan");
4a71df50
FB		 787
788 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
74eacdb9
FB		 789 dev_info(&card->gdev->dev,
790 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 791 return -EOPNOTSUPP;
792 }
793
4d7def2a 794 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
4a71df50
FB		 795 IPA_CMD_ASS_START, 0);
796 if (rc) {
74eacdb9
FB		 797 dev_warn(&card->gdev->dev,
798 "Starting VLAN support for %s failed\n",
799 QETH_CARD_IFNAME(card));
4a71df50 800 } else {
74eacdb9 801 dev_info(&card->gdev->dev, "VLAN enabled\n");
4a71df50
FB		 802 }
803 return rc;
804}
805
806static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
807{
808 int rc;
809
847a50fd 810 QETH_CARD_TEXT(card, 3, "stmcast");
4a71df50
FB		 811
812 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
74eacdb9
FB		 813 dev_info(&card->gdev->dev,
814 "Multicast not supported on %s\n",
815 QETH_CARD_IFNAME(card));
4a71df50
FB		 816 return -EOPNOTSUPP;
817 }
818
4d7def2a 819 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
4a71df50
FB		 820 IPA_CMD_ASS_START, 0);
821 if (rc) {
74eacdb9
FB		 822 dev_warn(&card->gdev->dev,
823 "Starting multicast support for %s failed\n",
824 QETH_CARD_IFNAME(card));
4a71df50 825 } else {
74eacdb9 826 dev_info(&card->gdev->dev, "Multicast enabled\n");
4a71df50
FB		 827 card->dev->flags |= IFF_MULTICAST;
828 }
829 return rc;
830}
831
4a71df50
FB		 832static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
833{
834 int rc;
835
847a50fd 836 QETH_CARD_TEXT(card, 3, "softipv6");
4a71df50 837
23274596
JW		 838 if (card->info.type == QETH_CARD_TYPE_IQD)
839 goto out;
840
4d7def2a 841 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
4a71df50
FB		 842 IPA_CMD_ASS_START, 3);
843 if (rc) {
74eacdb9
FB		 844 dev_err(&card->gdev->dev,
845 "Activating IPv6 support for %s failed\n",
846 QETH_CARD_IFNAME(card));
4a71df50
FB		 847 return rc;
848 }
a8155b00
KM		 849 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6,
850 IPA_CMD_ASS_START, 0);
4a71df50 851 if (rc) {
74eacdb9
FB		 852 dev_err(&card->gdev->dev,
853 "Activating IPv6 support for %s failed\n",
854 QETH_CARD_IFNAME(card));
4a71df50
FB		 855 return rc;
856 }
a8155b00
KM		 857 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
858 IPA_CMD_ASS_START, 0);
4a71df50 859 if (rc) {
74eacdb9
FB		 860 dev_warn(&card->gdev->dev,
861 "Enabling the passthrough mode for %s failed\n",
862 QETH_CARD_IFNAME(card));
4a71df50
FB		 863 return rc;
864 }
865out:
74eacdb9 866 dev_info(&card->gdev->dev, "IPV6 enabled\n");
4a71df50
FB		 867 return 0;
868}
4a71df50
FB		 869
870static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
871{
847a50fd 872 QETH_CARD_TEXT(card, 3, "strtipv6");
4a71df50
FB		 873
874 if (!qeth_is_supported(card, IPA_IPV6)) {
74eacdb9
FB		 875 dev_info(&card->gdev->dev,
876 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 877 return 0;
878 }
c062204f 879 return qeth_l3_softsetup_ipv6(card);
4a71df50
FB		 880}
881
882static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
883{
884 int rc;
885
847a50fd 886 QETH_CARD_TEXT(card, 3, "stbrdcst");
4a71df50
FB		 887 card->info.broadcast_capable = 0;
888 if (!qeth_is_supported(card, IPA_FILTERING)) {
74eacdb9
FB		 889 dev_info(&card->gdev->dev,
890 "Broadcast not supported on %s\n",
891 QETH_CARD_IFNAME(card));
4a71df50
FB		 892 rc = -EOPNOTSUPP;
893 goto out;
894 }
4d7def2a 895 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
4a71df50
FB		 896 IPA_CMD_ASS_START, 0);
897 if (rc) {
74eacdb9
FB		 898 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
899 "%s failed\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 900 goto out;
901 }
902
4d7def2a 903 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
4a71df50
FB		 904 IPA_CMD_ASS_CONFIGURE, 1);
905 if (rc) {
74eacdb9
FB		 906 dev_warn(&card->gdev->dev,
907 "Setting up broadcast filtering for %s failed\n",
908 QETH_CARD_IFNAME(card));
4a71df50
FB		 909 goto out;
910 }
911 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
74eacdb9 912 dev_info(&card->gdev->dev, "Broadcast enabled\n");
4d7def2a 913 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
4a71df50
FB		 914 IPA_CMD_ASS_ENABLE, 1);
915 if (rc) {
74eacdb9
FB		 916 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
917 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
4a71df50
FB		 918 goto out;
919 }
920 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
921out:
922 if (card->info.broadcast_capable)
923 card->dev->flags |= IFF_BROADCAST;
924 else
925 card->dev->flags &= ~IFF_BROADCAST;
926 return rc;
927}
928
4a71df50
FB		 929static int qeth_l3_start_ipassists(struct qeth_card *card)
930{
847a50fd 931 QETH_CARD_TEXT(card, 3, "strtipas");
d64ecc22 932
0f54761d
SR		 933 if (qeth_set_access_ctrl_online(card, 0))
934 return -EIO;
4a71df50 935 qeth_l3_start_ipa_arp_processing(card); /* go on*/
4a71df50
FB		 936 qeth_l3_start_ipa_source_mac(card); /* go on*/
937 qeth_l3_start_ipa_vlan(card); /* go on*/
938 qeth_l3_start_ipa_multicast(card); /* go on*/
939 qeth_l3_start_ipa_ipv6(card); /* go on*/
940 qeth_l3_start_ipa_broadcast(card); /* go on*/
4a71df50
FB		 941 return 0;
942}
943
4a71df50
FB		 944static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
945 struct qeth_reply *reply, unsigned long data)
946{
947 struct qeth_ipa_cmd *cmd;
948
949 cmd = (struct qeth_ipa_cmd *) data;
950 if (cmd->hdr.return_code == 0)
99f0b85d
JW		 951 ether_addr_copy(card->dev->dev_addr,
952 cmd->data.create_destroy_addr.unique_id);
4a71df50 953 else
1833611d 954 eth_random_addr(card->dev->dev_addr);
4a71df50
FB		 955
956 return 0;
957}
958
959static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
960{
961 int rc = 0;
962 struct qeth_cmd_buffer *iob;
963 struct qeth_ipa_cmd *cmd;
964
d11ba0c4 965 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
4a71df50
FB		 966
967 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
968 QETH_PROT_IPV6);
1aec42bc
TR		 969 if (!iob)
970 return -ENOMEM;
ff5caa7a 971 cmd = __ipa_cmd(iob);
4a71df50
FB		 972 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
973 card->info.unique_id;
974
975 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
976 NULL);
977 return rc;
978}
979
980static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
981 struct qeth_reply *reply, unsigned long data)
982{
983 struct qeth_ipa_cmd *cmd;
984
985 cmd = (struct qeth_ipa_cmd *) data;
986 if (cmd->hdr.return_code == 0)
987 card->info.unique_id = *((__u16 *)
988 &cmd->data.create_destroy_addr.unique_id[6]);
989 else {
990 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
991 UNIQUE_ID_NOT_BY_CARD;
74eacdb9
FB		 992 dev_warn(&card->gdev->dev, "The network adapter failed to "
993 "generate a unique ID\n");
4a71df50
FB		 994 }
995 return 0;
996}
997
998static int qeth_l3_get_unique_id(struct qeth_card *card)
999{
1000 int rc = 0;
1001 struct qeth_cmd_buffer *iob;
1002 struct qeth_ipa_cmd *cmd;
1003
d11ba0c4 1004 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
4a71df50
FB		 1005
1006 if (!qeth_is_supported(card, IPA_IPV6)) {
1007 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1008 UNIQUE_ID_NOT_BY_CARD;
1009 return 0;
1010 }
1011
1012 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1013 QETH_PROT_IPV6);
1aec42bc
TR		 1014 if (!iob)
1015 return -ENOMEM;
ff5caa7a 1016 cmd = __ipa_cmd(iob);
4a71df50
FB		 1017 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1018 card->info.unique_id;
1019
1020 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1021 return rc;
1022}
1023
76b11f8e
UB		 1024static int
1025qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1026 unsigned long data)
1027{
1028 struct qeth_ipa_cmd *cmd;
1029 __u16 rc;
1030
1031 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1032
1033 cmd = (struct qeth_ipa_cmd *)data;
1034 rc = cmd->hdr.return_code;
a959189a 1035 if (rc)
847a50fd 1036 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
76b11f8e
UB		 1037 switch (cmd->data.diagass.action) {
1038 case QETH_DIAGS_CMD_TRACE_QUERY:
1039 break;
1040 case QETH_DIAGS_CMD_TRACE_DISABLE:
a959189a
UB		 1041 switch (rc) {
1042 case 0:
1043 case IPA_RC_INVALID_SUBCMD:
1044 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1045 dev_info(&card->gdev->dev, "The HiperSockets network "
1046 "traffic analyzer is deactivated\n");
1047 break;
1048 default:
1049 break;
1050 }
76b11f8e
UB		 1051 break;
1052 case QETH_DIAGS_CMD_TRACE_ENABLE:
a959189a
UB		 1053 switch (rc) {
1054 case 0:
1055 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1056 dev_info(&card->gdev->dev, "The HiperSockets network "
1057 "traffic analyzer is activated\n");
1058 break;
1059 case IPA_RC_HARDWARE_AUTH_ERROR:
1060 dev_warn(&card->gdev->dev, "The device is not "
1061 "authorized to run as a HiperSockets network "
1062 "traffic analyzer\n");
1063 break;
1064 case IPA_RC_TRACE_ALREADY_ACTIVE:
1065 dev_warn(&card->gdev->dev, "A HiperSockets "
1066 "network traffic analyzer is already "
1067 "active in the HiperSockets LAN\n");
1068 break;
1069 default:
1070 break;
1071 }
76b11f8e
UB		 1072 break;
1073 default:
1074 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1075 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1076 }
1077
1078 return 0;
1079}
1080
1081static int
1082qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1083{
1084 struct qeth_cmd_buffer *iob;
1085 struct qeth_ipa_cmd *cmd;
1086
1087 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1088
1089 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1aec42bc
TR		 1090 if (!iob)
1091 return -ENOMEM;
ff5caa7a 1092 cmd = __ipa_cmd(iob);
76b11f8e
UB		 1093 cmd->data.diagass.subcmd_len = 16;
1094 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1095 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1096 cmd->data.diagass.action = diags_cmd;
1097 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1098}
1099
5f78e29c
LD		 1100static void
1101qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
4a71df50 1102{
4a71df50 1103 struct ip_mc_list *im4;
5f78e29c 1104 struct qeth_ipaddr *tmp, *ipm;
4a71df50 1105
847a50fd 1106 QETH_CARD_TEXT(card, 4, "addmc");
5f78e29c
LD		 1107
1108 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
8d9183d6
JW		 1109 if (!tmp)
1110 return;
5f78e29c 1111
f3aa3136
SS		 1112 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1113 im4 = rcu_dereference(im4->next_rcu)) {
8d9183d6 1114 ip_eth_mc_map(im4->multiaddr, tmp->mac);
6bee4e26 1115 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
bc3ab705 1116 tmp->is_multicast = 1;
5f78e29c 1117
c5c48c58 1118 ipm = qeth_l3_find_addr_by_ip(card, tmp);
5f78e29c 1119 if (ipm) {
c5c48c58 1120 /* for mcast, by-IP match means full match */
5f78e29c
LD		 1121 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1122 } else {
1123 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1124 if (!ipm)
1125 continue;
99f0b85d 1126 ether_addr_copy(ipm->mac, tmp->mac);
6bee4e26 1127 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
5f78e29c
LD		 1128 ipm->is_multicast = 1;
1129 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1130 hash_add(card->ip_mc_htable,
1131 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1132 }
4a71df50 1133 }
5f78e29c
LD		 1134
1135 kfree(tmp);
4a71df50
FB		 1136}
1137
0347af51 1138/* called with rcu_read_lock */
4a71df50
FB		 1139static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1140{
1141 struct in_device *in_dev;
7ff0bcf6 1142 u16 vid;
4a71df50 1143
847a50fd 1144 QETH_CARD_TEXT(card, 4, "addmcvl");
5f78e29c 1145
7ff0bcf6 1146 if (!qeth_is_supported(card, IPA_FULL_VLAN))
4a71df50
FB		 1147 return;
1148
7ff0bcf6
JP		 1149 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1150 struct net_device *netdev;
1151
f06c7f9f 1152 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
91b1c1aa 1153 vid);
4a71df50
FB		 1154 if (netdev == NULL ||
1155 !(netdev->flags & IFF_UP))
1156 continue;
0347af51 1157 in_dev = __in_dev_get_rcu(netdev);
4a71df50
FB		 1158 if (!in_dev)
1159 continue;
5f78e29c 1160 qeth_l3_add_mc_to_hash(card, in_dev);
4a71df50
FB		 1161 }
1162}
1163
1164static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1165{
1166 struct in_device *in4_dev;
1167
847a50fd 1168 QETH_CARD_TEXT(card, 4, "chkmcv4");
5f78e29c 1169
f3aa3136 1170 rcu_read_lock();
0347af51
JP		 1171 in4_dev = __in_dev_get_rcu(card->dev);
1172 if (in4_dev == NULL)
1173 goto unlock;
5f78e29c 1174 qeth_l3_add_mc_to_hash(card, in4_dev);
4a71df50 1175 qeth_l3_add_vlan_mc(card);
0347af51 1176unlock:
f3aa3136 1177 rcu_read_unlock();
4a71df50
FB		 1178}
1179
c062204f
JW		 1180static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1181 struct inet6_dev *in6_dev)
4a71df50
FB		 1182{
1183 struct qeth_ipaddr *ipm;
1184 struct ifmcaddr6 *im6;
5f78e29c 1185 struct qeth_ipaddr *tmp;
4a71df50 1186
847a50fd 1187 QETH_CARD_TEXT(card, 4, "addmc6");
5f78e29c
LD		 1188
1189 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
8d9183d6
JW		 1190 if (!tmp)
1191 return;
5f78e29c 1192
4a71df50 1193 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
8d9183d6 1194 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
5f78e29c
LD		 1195 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1196 sizeof(struct in6_addr));
1197 tmp->is_multicast = 1;
1198
c5c48c58 1199 ipm = qeth_l3_find_addr_by_ip(card, tmp);
5f78e29c 1200 if (ipm) {
c5c48c58 1201 /* for mcast, by-IP match means full match */
5f78e29c
LD		 1202 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1203 continue;
1204 }
1205
4a71df50
FB		 1206 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1207 if (!ipm)
1208 continue;
5f78e29c 1209
99f0b85d 1210 ether_addr_copy(ipm->mac, tmp->mac);
4a71df50
FB		 1211 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1212 sizeof(struct in6_addr));
5f78e29c
LD		 1213 ipm->is_multicast = 1;
1214 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1215 hash_add(card->ip_mc_htable,
1216 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1217
4a71df50 1218 }
5f78e29c 1219 kfree(tmp);
4a71df50
FB		 1220}
1221
0347af51 1222/* called with rcu_read_lock */
4a71df50
FB		 1223static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1224{
1225 struct inet6_dev *in_dev;
7ff0bcf6 1226 u16 vid;
4a71df50 1227
847a50fd 1228 QETH_CARD_TEXT(card, 4, "admc6vl");
5f78e29c 1229
7ff0bcf6 1230 if (!qeth_is_supported(card, IPA_FULL_VLAN))
4a71df50
FB		 1231 return;
1232
7ff0bcf6
JP		 1233 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1234 struct net_device *netdev;
1235
f06c7f9f 1236 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
91b1c1aa 1237 vid);
4a71df50
FB		 1238 if (netdev == NULL ||
1239 !(netdev->flags & IFF_UP))
1240 continue;
1241 in_dev = in6_dev_get(netdev);
1242 if (!in_dev)
1243 continue;
1244 read_lock_bh(&in_dev->lock);
5f78e29c 1245 qeth_l3_add_mc6_to_hash(card, in_dev);
4a71df50
FB		 1246 read_unlock_bh(&in_dev->lock);
1247 in6_dev_put(in_dev);
1248 }
1249}
1250
1251static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1252{
1253 struct inet6_dev *in6_dev;
1254
847a50fd 1255 QETH_CARD_TEXT(card, 4, "chkmcv6");
5f78e29c 1256
4a71df50
FB		 1257 if (!qeth_is_supported(card, IPA_IPV6))
1258 return ;
1259 in6_dev = in6_dev_get(card->dev);
5f78e29c 1260 if (!in6_dev)
4a71df50 1261 return;
5f78e29c 1262
0347af51 1263 rcu_read_lock();
4a71df50 1264 read_lock_bh(&in6_dev->lock);
5f78e29c 1265 qeth_l3_add_mc6_to_hash(card, in6_dev);
4a71df50
FB		 1266 qeth_l3_add_vlan_mc6(card);
1267 read_unlock_bh(&in6_dev->lock);
0347af51 1268 rcu_read_unlock();
4a71df50
FB		 1269 in6_dev_put(in6_dev);
1270}
4a71df50 1271
80d5c368
PM		 1272static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1273 __be16 proto, u16 vid)
4a71df50 1274{
509e2562 1275 struct qeth_card *card = dev->ml_priv;
4a71df50 1276
7ff0bcf6 1277 set_bit(vid, card->active_vlans);
8e586137 1278 return 0;
4a71df50
FB		 1279}
1280
80d5c368
PM		 1281static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1282 __be16 proto, u16 vid)
4a71df50 1283{
509e2562 1284 struct qeth_card *card = dev->ml_priv;
4a71df50 1285
847a50fd 1286 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
5f78e29c 1287
8e98ac48 1288 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
847a50fd 1289 QETH_CARD_TEXT(card, 3, "kidREC");
8e586137 1290 return 0;
8e98ac48 1291 }
7ff0bcf6 1292 clear_bit(vid, card->active_vlans);
00c163f1 1293 qeth_l3_set_rx_mode(dev);
8e586137 1294 return 0;
4a71df50
FB		 1295}
1296
d7aa9d0b
JW		 1297static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1298 struct qeth_hdr *hdr)
4a71df50 1299{
4a71df50 1300 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
8d9183d6
JW		 1301 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1302 ETH_P_IP;
99f0b85d 1303 unsigned char tg_addr[ETH_ALEN];
8d9183d6
JW		 1304
1305 skb_reset_network_header(skb);
4a71df50
FB		 1306 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1307 case QETH_CAST_MULTICAST:
c062204f 1308 if (prot == ETH_P_IP)
8d9183d6 1309 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
c062204f
JW		 1310 else
1311 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1312
4a71df50 1313 card->stats.multicast++;
4a71df50
FB		 1314 break;
1315 case QETH_CAST_BROADCAST:
99f0b85d 1316 ether_addr_copy(tg_addr, card->dev->broadcast);
4a71df50 1317 card->stats.multicast++;
4a71df50 1318 break;
4a71df50 1319 default:
76b11f8e
UB		 1320 if (card->options.sniffer)
1321 skb->pkt_type = PACKET_OTHERHOST;
99f0b85d 1322 ether_addr_copy(tg_addr, card->dev->dev_addr);
4a71df50 1323 }
04f67398 1324
fe94e2e0
UB		 1325 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1326 card->dev->header_ops->create(skb, card->dev, prot,
a843383a 1327 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
f0ea8bfb 1328 skb->len);
fe94e2e0
UB		 1329 else
1330 card->dev->header_ops->create(skb, card->dev, prot,
f0ea8bfb 1331 tg_addr, "FAKELL", skb->len);
4a71df50
FB		 1332 }
1333
1abd2296 1334 skb->protocol = eth_type_trans(skb, card->dev);
4a71df50 1335
d7aa9d0b
JW		 1336 /* copy VLAN tag from hdr into skb */
1337 if (!card->options.sniffer &&
1338 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1339 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1340 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1341 hdr->hdr.l3.vlan_id :
a843383a 1342 hdr->hdr.l3.next_hop.rx.vlan_id;
d7aa9d0b 1343 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
4a71df50
FB		 1344 }
1345
6195b936 1346 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
4a71df50
FB		 1347}
1348
a1c3ed4c
FB		 1349static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1350 int budget, int *done)
4a71df50 1351{
a1c3ed4c 1352 int work_done = 0;
4a71df50
FB		 1353 struct sk_buff *skb;
1354 struct qeth_hdr *hdr;
4a71df50 1355 unsigned int len;
b3332930 1356 __u16 magic;
4a71df50 1357
a1c3ed4c 1358 *done = 0;
18af5c17 1359 WARN_ON_ONCE(!budget);
a1c3ed4c
FB		 1360 while (budget) {
1361 skb = qeth_core_get_next_skb(card,
b3332930 1362 &card->qdio.in_q->bufs[card->rx.b_index],
a1c3ed4c
FB		 1363 &card->rx.b_element, &card->rx.e_offset, &hdr);
1364 if (!skb) {
1365 *done = 1;
1366 break;
1367 }
4a71df50
FB		 1368 switch (hdr->hdr.l3.id) {
1369 case QETH_HEADER_TYPE_LAYER3:
b3332930
FB		 1370 magic = *(__u16 *)skb->data;
1371 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1372 (magic == ETH_P_AF_IUCV)) {
6bee4e26 1373 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
b3332930
FB		 1374 len = skb->len;
1375 card->dev->header_ops->create(skb, card->dev, 0,
f0ea8bfb 1376 card->dev->dev_addr, "FAKELL", len);
37cf05d2 1377 skb_reset_mac_header(skb);
b3332930
FB		 1378 netif_receive_skb(skb);
1379 } else {
d7aa9d0b 1380 qeth_l3_rebuild_skb(card, skb, hdr);
b3332930 1381 len = skb->len;
b3332930
FB		 1382 napi_gro_receive(&card->napi, skb);
1383 }
4a71df50 1384 break;
76b11f8e 1385 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
76b11f8e 1386 skb->protocol = eth_type_trans(skb, skb->dev);
76b11f8e
UB		 1387 len = skb->len;
1388 netif_receive_skb(skb);
1389 break;
4a71df50
FB		 1390 default:
1391 dev_kfree_skb_any(skb);
847a50fd 1392 QETH_CARD_TEXT(card, 3, "inbunkno");
0ac1487c 1393 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
4a71df50
FB		 1394 continue;
1395 }
a1c3ed4c
FB		 1396 work_done++;
1397 budget--;
4a71df50
FB		 1398 card->stats.rx_packets++;
1399 card->stats.rx_bytes += len;
1400 }
a1c3ed4c
FB		 1401 return work_done;
1402}
1403
b2f4de8b 1404static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
4a71df50 1405{
d11ba0c4
PT		 1406 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1407 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50
FB		 1408
1409 qeth_set_allowed_threads(card, 0, 1);
76b11f8e
UB		 1410 if (card->options.sniffer &&
1411 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1412 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
4a71df50
FB		 1413 if (card->read.state == CH_STATE_UP &&
1414 card->write.state == CH_STATE_UP &&
1415 (card->state == CARD_STATE_UP)) {
1416 if (recovery_mode)
1417 qeth_l3_stop(card->dev);
8af7c5ae 1418 else {
869da90b
UB		 1419 rtnl_lock();
1420 dev_close(card->dev);
1421 rtnl_unlock();
8af7c5ae 1422 }
4a71df50
FB		 1423 card->state = CARD_STATE_SOFTSETUP;
1424 }
1425 if (card->state == CARD_STATE_SOFTSETUP) {
5f78e29c 1426 qeth_l3_clear_ip_htable(card, 1);
4a71df50
FB		 1427 qeth_clear_ipacmd_list(card);
1428 card->state = CARD_STATE_HARDSETUP;
1429 }
1430 if (card->state == CARD_STATE_HARDSETUP) {
4a71df50
FB		 1431 qeth_qdio_clear_card(card, 0);
1432 qeth_clear_qdio_buffers(card);
1433 qeth_clear_working_pool_list(card);
1434 card->state = CARD_STATE_DOWN;
1435 }
1436 if (card->state == CARD_STATE_DOWN) {
1437 qeth_clear_cmd_buffers(&card->read);
1438 qeth_clear_cmd_buffers(&card->write);
1439 }
4a71df50
FB		 1440}
1441
76b11f8e
UB		 1442/*
1443 * test for and Switch promiscuous mode (on or off)
1444 * either for guestlan or HiperSocket Sniffer
1445 */
1446static void
1447qeth_l3_handle_promisc_mode(struct qeth_card *card)
1448{
1449 struct net_device *dev = card->dev;
1450
1451 if (((dev->flags & IFF_PROMISC) &&
1452 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1453 (!(dev->flags & IFF_PROMISC) &&
1454 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1455 return;
1456
1457 if (card->info.guestlan) { /* Guestlan trace */
1458 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1459 qeth_setadp_promisc_mode(card);
1460 } else if (card->options.sniffer && /* HiperSockets trace */
1461 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1462 if (dev->flags & IFF_PROMISC) {
847a50fd 1463 QETH_CARD_TEXT(card, 3, "+promisc");
76b11f8e
UB		 1464 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1465 } else {
847a50fd 1466 QETH_CARD_TEXT(card, 3, "-promisc");
76b11f8e
UB		 1467 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1468 }
1469 }
1470}
1471
00c163f1 1472static void qeth_l3_set_rx_mode(struct net_device *dev)
4a71df50 1473{
509e2562 1474 struct qeth_card *card = dev->ml_priv;
00c163f1
JW		 1475 struct qeth_ipaddr *addr;
1476 struct hlist_node *tmp;
1477 int i, rc;
4a71df50 1478
847a50fd 1479 QETH_CARD_TEXT(card, 3, "setmulti");
8e98ac48
UB		 1480 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1481 (card->state != CARD_STATE_UP))
1482 return;
76b11f8e 1483 if (!card->options.sniffer) {
5f78e29c
LD		 1484 spin_lock_bh(&card->mclock);
1485
76b11f8e 1486 qeth_l3_add_multicast_ipv4(card);
76b11f8e 1487 qeth_l3_add_multicast_ipv6(card);
00c163f1
JW		 1488
1489 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1490 switch (addr->disp_flag) {
1491 case QETH_DISP_ADDR_DELETE:
1492 rc = qeth_l3_deregister_addr_entry(card, addr);
1493 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) {
1494 hash_del(&addr->hnode);
1495 kfree(addr);
1496 }
1497 break;
1498 case QETH_DISP_ADDR_ADD:
1499 rc = qeth_l3_register_addr_entry(card, addr);
1500 if (rc && rc != IPA_RC_LAN_OFFLINE) {
1501 hash_del(&addr->hnode);
1502 kfree(addr);
1503 break;
1504 }
1505 addr->ref_counter = 1;
1506 /* fall through */
1507 default:
1508 /* for next call to set_rx_mode(): */
1509 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1510 }
1511 }
5f78e29c
LD		 1512
1513 spin_unlock_bh(&card->mclock);
1514
76b11f8e
UB		 1515 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1516 return;
1517 }
1518 qeth_l3_handle_promisc_mode(card);
4a71df50
FB		 1519}
1520
1521static const char *qeth_l3_arp_get_error_cause(int *rc)
1522{
1523 switch (*rc) {
1524 case QETH_IPA_ARP_RC_FAILED:
1525 *rc = -EIO;
1526 return "operation failed";
1527 case QETH_IPA_ARP_RC_NOTSUPP:
1528 *rc = -EOPNOTSUPP;
1529 return "operation not supported";
1530 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1531 *rc = -EINVAL;
1532 return "argument out of range";
1533 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1534 *rc = -EOPNOTSUPP;
1535 return "query operation not supported";
1536 case QETH_IPA_ARP_RC_Q_NO_DATA:
1537 *rc = -ENOENT;
1538 return "no query data available";
1539 default:
1540 return "unknown error";
1541 }
1542}
1543
1544static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1545{
1546 int tmp;
1547 int rc;
1548
847a50fd 1549 QETH_CARD_TEXT(card, 3, "arpstnoe");
4a71df50
FB		 1550
1551 /*
1552 * currently GuestLAN only supports the ARP assist function
1553 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1554 * thus we say EOPNOTSUPP for this ARP function
1555 */
1556 if (card->info.guestlan)
1557 return -EOPNOTSUPP;
1558 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 1559 return -EOPNOTSUPP;
1560 }
4d7def2a 1561 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
4a71df50
FB		 1562 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1563 no_entries);
1564 if (rc) {
1565 tmp = rc;
14cc21b6
FB		 1566 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
1567 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
4a71df50
FB		 1568 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1569 }
1570 return rc;
1571}
1572
d0ddf30f
EL		 1573static __u32 get_arp_entry_size(struct qeth_card *card,
1574 struct qeth_arp_query_data *qdata,
1575 struct qeth_arp_entrytype *type, __u8 strip_entries)
4a71df50 1576{
d0ddf30f
EL		 1577 __u32 rc;
1578 __u8 is_hsi;
4a71df50 1579
d0ddf30f
EL		 1580 is_hsi = qdata->reply_bits == 5;
1581 if (type->ip == QETHARP_IP_ADDR_V4) {
1582 QETH_CARD_TEXT(card, 4, "arpev4");
1583 if (strip_entries) {
1584 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1585 sizeof(struct qeth_arp_qi_entry7_short);
1586 } else {
1587 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1588 sizeof(struct qeth_arp_qi_entry7);
1589 }
1590 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1591 QETH_CARD_TEXT(card, 4, "arpev6");
1592 if (strip_entries) {
1593 rc = is_hsi ?
1594 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1595 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1596 } else {
1597 rc = is_hsi ?
1598 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1599 sizeof(struct qeth_arp_qi_entry7_ipv6);
1600 }
1601 } else {
1602 QETH_CARD_TEXT(card, 4, "arpinv");
1603 rc = 0;
4a71df50 1604 }
d0ddf30f
EL		 1605
1606 return rc;
1607}
1608
1609static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1610{
1611 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1612 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
4a71df50
FB		 1613}
1614
1615static int qeth_l3_arp_query_cb(struct qeth_card *card,
1616 struct qeth_reply *reply, unsigned long data)
1617{
1618 struct qeth_ipa_cmd *cmd;
1619 struct qeth_arp_query_data *qdata;
1620 struct qeth_arp_query_info *qinfo;
4a71df50 1621 int i;
d0ddf30f
EL		 1622 int e;
1623 int entrybytes_done;
1624 int stripped_bytes;
1625 __u8 do_strip_entries;
4a71df50 1626
d0ddf30f 1627 QETH_CARD_TEXT(card, 3, "arpquecb");
4a71df50
FB		 1628
1629 qinfo = (struct qeth_arp_query_info *) reply->param;
1630 cmd = (struct qeth_ipa_cmd *) data;
d0ddf30f 1631 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
4a71df50 1632 if (cmd->hdr.return_code) {
d0ddf30f
EL		 1633 QETH_CARD_TEXT(card, 4, "arpcberr");
1634 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
4a71df50
FB		 1635 return 0;
1636 }
1637 if (cmd->data.setassparms.hdr.return_code) {
1638 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
d0ddf30f
EL		 1639 QETH_CARD_TEXT(card, 4, "setaperr");
1640 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
4a71df50
FB		 1641 return 0;
1642 }
1643 qdata = &cmd->data.setassparms.data.query_arp;
847a50fd 1644 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
4a71df50 1645
d0ddf30f
EL		 1646 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1647 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1648 entrybytes_done = 0;
1649 for (e = 0; e < qdata->no_entries; ++e) {
1650 char *cur_entry;
1651 __u32 esize;
1652 struct qeth_arp_entrytype *etype;
1653
1654 cur_entry = &qdata->data + entrybytes_done;
1655 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1656 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1657 QETH_CARD_TEXT(card, 4, "pmis");
1658 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1659 break;
1660 }
1661 esize = get_arp_entry_size(card, qdata, etype,
1662 do_strip_entries);
1663 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1664 if (!esize)
1665 break;
1666
1667 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1668 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
e0a8114c 1669 cmd->hdr.return_code = IPA_RC_ENOMEM;
d0ddf30f
EL		 1670 goto out_error;
1671 }
4a71df50 1672
d0ddf30f
EL		 1673 memcpy(qinfo->udata + qinfo->udata_offset,
1674 &qdata->data + entrybytes_done + stripped_bytes,
1675 esize);
1676 entrybytes_done += esize + stripped_bytes;
1677 qinfo->udata_offset += esize;
1678 ++qinfo->no_entries;
1679 }
4a71df50
FB		 1680 /* check if all replies received ... */
1681 if (cmd->data.setassparms.hdr.seq_no <
1682 cmd->data.setassparms.hdr.number_of_replies)
1683 return 1;
d0ddf30f 1684 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
4a71df50
FB		 1685 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1686 /* keep STRIP_ENTRIES flag so the user program can distinguish
1687 * stripped entries from normal ones */
1688 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1689 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1690 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
d0ddf30f 1691 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
4a71df50
FB		 1692 return 0;
1693out_error:
1694 i = 0;
1695 memcpy(qinfo->udata, &i, 4);
1696 return 0;
1697}
1698
1699static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
1700 struct qeth_cmd_buffer *iob, int len,
1701 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1702 unsigned long),
1703 void *reply_param)
1704{
847a50fd 1705 QETH_CARD_TEXT(card, 4, "sendarp");
4a71df50
FB		 1706
1707 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
1708 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
1709 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
1710 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
1711 reply_cb, reply_param);
1712}
1713
d0ddf30f
EL		 1714static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1715 enum qeth_prot_versions prot,
1716 struct qeth_arp_query_info *qinfo)
4a71df50
FB		 1717{
1718 struct qeth_cmd_buffer *iob;
d0ddf30f 1719 struct qeth_ipa_cmd *cmd;
4a71df50
FB		 1720 int tmp;
1721 int rc;
1722
d0ddf30f
EL		 1723 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1724
b475e316
TR		 1725 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1726 IPA_CMD_ASS_ARP_QUERY_INFO,
1727 sizeof(struct qeth_arp_query_data)
1728 - sizeof(char),
1729 prot);
1aec42bc
TR		 1730 if (!iob)
1731 return -ENOMEM;
ff5caa7a 1732 cmd = __ipa_cmd(iob);
d0ddf30f
EL		 1733 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1734 cmd->data.setassparms.data.query_arp.reply_bits = 0;
1735 cmd->data.setassparms.data.query_arp.no_entries = 0;
1736 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
1737 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
1738 qeth_l3_arp_query_cb, (void *)qinfo);
1739 if (rc) {
1740 tmp = rc;
1741 QETH_DBF_MESSAGE(2,
1742 "Error while querying ARP cache on %s: %s "
1743 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1744 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1745 }
1746
1747 return rc;
1748}
1749
1750static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1751{
1752 struct qeth_arp_query_info qinfo = {0, };
1753 int rc;
1754
847a50fd 1755 QETH_CARD_TEXT(card, 3, "arpquery");
4a71df50
FB		 1756
1757 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1758 IPA_ARP_PROCESSING)) {
d0ddf30f
EL		 1759 QETH_CARD_TEXT(card, 3, "arpqnsup");
1760 rc = -EOPNOTSUPP;
1761 goto out;
4a71df50
FB		 1762 }
1763 /* get size of userspace buffer and mask_bits -> 6 bytes */
d0ddf30f
EL		 1764 if (copy_from_user(&qinfo, udata, 6)) {
1765 rc = -EFAULT;
1766 goto out;
1767 }
4a71df50 1768 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
d0ddf30f
EL		 1769 if (!qinfo.udata) {
1770 rc = -ENOMEM;
1771 goto out;
1772 }
4a71df50 1773 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
d0ddf30f 1774 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
4a71df50 1775 if (rc) {
4a71df50
FB		 1776 if (copy_to_user(udata, qinfo.udata, 4))
1777 rc = -EFAULT;
77a83ed1
SO		 1778 goto free_and_out;
1779 }
77a83ed1
SO		 1780 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1781 /* fails in case of GuestLAN QDIO mode */
1782 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1783 }
77a83ed1
SO		 1784 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1785 QETH_CARD_TEXT(card, 4, "qactf");
1786 rc = -EFAULT;
1787 goto free_and_out;
4a71df50 1788 }
77a83ed1
SO		 1789 QETH_CARD_TEXT(card, 4, "qacts");
1790
d0ddf30f 1791free_and_out:
4a71df50 1792 kfree(qinfo.udata);
d0ddf30f 1793out:
4a71df50
FB		 1794 return rc;
1795}
1796
1797static int qeth_l3_arp_add_entry(struct qeth_card *card,
1798 struct qeth_arp_cache_entry *entry)
1799{
1800 struct qeth_cmd_buffer *iob;
1801 char buf[16];
1802 int tmp;
1803 int rc;
1804
847a50fd 1805 QETH_CARD_TEXT(card, 3, "arpadent");
4a71df50
FB		 1806
1807 /*
1808 * currently GuestLAN only supports the ARP assist function
1809 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1810 * thus we say EOPNOTSUPP for this ARP function
1811 */
1812 if (card->info.guestlan)
1813 return -EOPNOTSUPP;
1814 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 1815 return -EOPNOTSUPP;
1816 }
1817
b475e316 1818 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
4a71df50
FB		 1819 IPA_CMD_ASS_ARP_ADD_ENTRY,
1820 sizeof(struct qeth_arp_cache_entry),
1821 QETH_PROT_IPV4);
1aec42bc
TR		 1822 if (!iob)
1823 return -ENOMEM;
4d7def2a 1824 rc = qeth_send_setassparms(card, iob,
4a71df50
FB		 1825 sizeof(struct qeth_arp_cache_entry),
1826 (unsigned long) entry,
8f43fb00 1827 qeth_setassparms_cb, NULL);
4a71df50
FB		 1828 if (rc) {
1829 tmp = rc;
1830 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
14cc21b6
FB		 1831 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
1832 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1833 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
4a71df50
FB		 1834 }
1835 return rc;
1836}
1837
1838static int qeth_l3_arp_remove_entry(struct qeth_card *card,
1839 struct qeth_arp_cache_entry *entry)
1840{
1841 struct qeth_cmd_buffer *iob;
1842 char buf[16] = {0, };
1843 int tmp;
1844 int rc;
1845
847a50fd 1846 QETH_CARD_TEXT(card, 3, "arprment");
4a71df50
FB		 1847
1848 /*
1849 * currently GuestLAN only supports the ARP assist function
1850 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1851 * thus we say EOPNOTSUPP for this ARP function
1852 */
1853 if (card->info.guestlan)
1854 return -EOPNOTSUPP;
1855 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 1856 return -EOPNOTSUPP;
1857 }
1858 memcpy(buf, entry, 12);
b475e316 1859 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
4a71df50
FB		 1860 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
1861 12,
1862 QETH_PROT_IPV4);
1aec42bc
TR		 1863 if (!iob)
1864 return -ENOMEM;
4d7def2a 1865 rc = qeth_send_setassparms(card, iob,
4a71df50 1866 12, (unsigned long)buf,
8f43fb00 1867 qeth_setassparms_cb, NULL);
4a71df50
FB		 1868 if (rc) {
1869 tmp = rc;
1870 memset(buf, 0, 16);
1871 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
14cc21b6
FB		 1872 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
1873 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1874 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
4a71df50
FB		 1875 }
1876 return rc;
1877}
1878
1879static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1880{
1881 int rc;
1882 int tmp;
1883
847a50fd 1884 QETH_CARD_TEXT(card, 3, "arpflush");
4a71df50
FB		 1885
1886 /*
1887 * currently GuestLAN only supports the ARP assist function
1888 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1889 * thus we say EOPNOTSUPP for this ARP function
1890 */
1891 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
1892 return -EOPNOTSUPP;
1893 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
4a71df50
FB		 1894 return -EOPNOTSUPP;
1895 }
4d7def2a 1896 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
4a71df50
FB		 1897 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
1898 if (rc) {
1899 tmp = rc;
14cc21b6
FB		 1900 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
1901 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
4a71df50
FB		 1902 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1903 }
1904 return rc;
1905}
1906
1907static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1908{
509e2562 1909 struct qeth_card *card = dev->ml_priv;
4a71df50 1910 struct qeth_arp_cache_entry arp_entry;
4a71df50
FB		 1911 int rc = 0;
1912
4a71df50
FB		 1913 switch (cmd) {
1914 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1915 if (!capable(CAP_NET_ADMIN)) {
1916 rc = -EPERM;
1917 break;
1918 }
1919 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1920 break;
1921 case SIOC_QETH_ARP_QUERY_INFO:
1922 if (!capable(CAP_NET_ADMIN)) {
1923 rc = -EPERM;
1924 break;
1925 }
1926 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1927 break;
1928 case SIOC_QETH_ARP_ADD_ENTRY:
1929 if (!capable(CAP_NET_ADMIN)) {
1930 rc = -EPERM;
1931 break;
1932 }
1933 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1934 sizeof(struct qeth_arp_cache_entry)))
1935 rc = -EFAULT;
1936 else
1937 rc = qeth_l3_arp_add_entry(card, &arp_entry);
1938 break;
1939 case SIOC_QETH_ARP_REMOVE_ENTRY:
1940 if (!capable(CAP_NET_ADMIN)) {
1941 rc = -EPERM;
1942 break;
1943 }
1944 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1945 sizeof(struct qeth_arp_cache_entry)))
1946 rc = -EFAULT;
1947 else
1948 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
1949 break;
1950 case SIOC_QETH_ARP_FLUSH_CACHE:
1951 if (!capable(CAP_NET_ADMIN)) {
1952 rc = -EPERM;
1953 break;
1954 }
1955 rc = qeth_l3_arp_flush_cache(card);
1956 break;
4a71df50
FB		 1957 default:
1958 rc = -EOPNOTSUPP;
1959 }
4a71df50
FB		 1960 return rc;
1961}
1962
1f979123 1963static int qeth_l3_get_cast_type(struct sk_buff *skb)
ce73e10e 1964{
69cce1d1
DM		 1965 struct neighbour *n = NULL;
1966 struct dst_entry *dst;
1967
1d36cb47 1968 rcu_read_lock();
69cce1d1
DM		 1969 dst = skb_dst(skb);
1970 if (dst)
24db1ba8 1971 n = dst_neigh_lookup_skb(dst, skb);
69cce1d1 1972 if (n) {
1f979123
JW		 1973 int cast_type = n->type;
1974
1d36cb47 1975 rcu_read_unlock();
24db1ba8 1976 neigh_release(n);
ce73e10e
KDW		 1977 if ((cast_type == RTN_BROADCAST) ||
1978 (cast_type == RTN_MULTICAST) ||
1979 (cast_type == RTN_ANYCAST))
1980 return cast_type;
86c0cdb9 1981 return RTN_UNICAST;
ce73e10e 1982 }
1d36cb47
FB		 1983 rcu_read_unlock();
1984
1f979123 1985 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
f13ade19
JW		 1986 switch (qeth_get_ip_version(skb)) {
1987 case 4:
1f979123 1988 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
86c0cdb9 1989 RTN_MULTICAST : RTN_UNICAST;
f13ade19
JW		 1990 case 6:
1991 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1992 RTN_MULTICAST : RTN_UNICAST;
1993 default:
1994 /* ... and MAC address */
1995 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1996 skb->dev->broadcast))
1997 return RTN_BROADCAST;
1998 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
1999 return RTN_MULTICAST;
2000 /* default to unicast */
2001 return RTN_UNICAST;
2002 }
ce73e10e
KDW		 2003}
2004
a647a025
JW		 2005static void qeth_l3_fill_af_iucv_hdr(struct qeth_hdr *hdr, struct sk_buff *skb,
2006 unsigned int data_len)
b3332930
FB		 2007{
2008 char daddr[16];
2009 struct af_iucv_trans_hdr *iucv_hdr;
2010
b3332930
FB		 2011 memset(hdr, 0, sizeof(struct qeth_hdr));
2012 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
a647a025 2013 hdr->hdr.l3.length = data_len;
b3332930 2014 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
acd9776b 2015
a647a025 2016 iucv_hdr = (struct af_iucv_trans_hdr *)(skb_mac_header(skb) + ETH_HLEN);
b3332930
FB		 2017 memset(daddr, 0, sizeof(daddr));
2018 daddr[0] = 0xfe;
2019 daddr[1] = 0x80;
2020 memcpy(&daddr[8], iucv_hdr->destUserID, 8);
a843383a 2021 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16);
b3332930
FB		 2022}
2023
910a0a8f 2024static u8 qeth_l3_cast_type_to_flag(int cast_type)
4a71df50 2025{
910a0a8f
JW		 2026 if (cast_type == RTN_MULTICAST)
2027 return QETH_CAST_MULTICAST;
2028 if (cast_type == RTN_ANYCAST)
2029 return QETH_CAST_ANYCAST;
2030 if (cast_type == RTN_BROADCAST)
2031 return QETH_CAST_BROADCAST;
2032 return QETH_CAST_UNICAST;
2033}
69cce1d1 2034
910a0a8f 2035static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
f6c13142
JW		 2036 struct sk_buff *skb, int ipv, int cast_type,
2037 unsigned int data_len)
910a0a8f 2038{
f13ade19
JW		 2039 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
2040
4a71df50
FB		 2041 memset(hdr, 0, sizeof(struct qeth_hdr));
2042 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
f6c13142 2043 hdr->hdr.l3.length = data_len;
4a71df50 2044
f13ade19
JW		 2045 if (ipv == 4 || IS_IQD(card)) {
2046 /* NETIF_F_HW_VLAN_CTAG_TX */
2047 if (skb_vlan_tag_present(skb)) {
2048 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
2049 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2050 }
2051 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
2052 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2053 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
4a71df50
FB		 2054 }
2055
fb321f25
JW		 2056 if (!skb_is_gso(skb) && skb->ip_summed == CHECKSUM_PARTIAL) {
2057 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
f231dc9d 2058 /* some HW requires combined L3+L4 csum offload: */
2d3986d1 2059 if (ipv == 4)
f231dc9d 2060 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
fb321f25
JW		 2061 if (card->options.performance_stats)
2062 card->perf_stats.tx_csum++;
2063 }
2064
910a0a8f
JW		 2065 /* OSA only: */
2066 if (!ipv) {
2067 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
2068 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
2069 skb->dev->broadcast))
2070 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
2071 else
2072 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
2073 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
2074 return;
2075 }
1d36cb47 2076
910a0a8f 2077 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
1d36cb47 2078 rcu_read_lock();
4a71df50 2079 if (ipv == 4) {
910a0a8f 2080 struct rtable *rt = skb_rtable(skb);
87e7597b 2081
910a0a8f
JW		 2082 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2083 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2084 ip_hdr(skb)->daddr;
2085 } else {
2086 /* IPv6 */
2087 const struct rt6_info *rt = skb_rt6_info(skb);
2088 const struct in6_addr *next_hop;
87e7597b 2089
ec2c6726 2090 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
910a0a8f
JW		 2091 next_hop = &rt->rt6i_gateway;
2092 else
2093 next_hop = &ipv6_hdr(skb)->daddr;
2094 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16);
87e7597b 2095
910a0a8f
JW		 2096 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2097 if (card->info.type != QETH_CARD_TYPE_IQD)
2098 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
4a71df50 2099 }
1d36cb47 2100 rcu_read_unlock();
4a71df50
FB		 2101}
2102
64ef8957
FB		 2103static void qeth_tso_fill_header(struct qeth_card *card,
2104 struct qeth_hdr *qhdr, struct sk_buff *skb)
2105{
2106 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2107 struct tcphdr *tcph = tcp_hdr(skb);
2108 struct iphdr *iph = ip_hdr(skb);
2109 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2110
2111 /*fix header to TSO values ...*/
2112 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2113 /*set values which are fix for the first approach ...*/
2114 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2115 hdr->ext.imb_hdr_no = 1;
2116 hdr->ext.hdr_type = 1;
2117 hdr->ext.hdr_version = 1;
2118 hdr->ext.hdr_len = 28;
2119 /*insert non-fix values */
2120 hdr->ext.mss = skb_shinfo(skb)->gso_size;
f8eb4930 2121 hdr->ext.dg_hdr_len = (__u16)(ip_hdrlen(skb) + tcp_hdrlen(skb));
64ef8957
FB		 2122 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2123 sizeof(struct qeth_hdr_tso));
2124 tcph->check = 0;
6bee4e26 2125 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
64ef8957
FB		 2126 ip6h->payload_len = 0;
2127 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2128 0, IPPROTO_TCP, 0);
2129 } else {
2130 /*OSA want us to set these values ...*/
2131 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2132 0, IPPROTO_TCP, 0);
2133 iph->tot_len = 0;
2134 iph->check = 0;
2135 }
2136}
2137
2863c613 2138/**
41aeed58
EC		 2139 * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2140 * @card: qeth card structure, to check max. elems.
2141 * @skb: SKB address
2142 * @extra_elems: extra elems needed, to check against max.
2863c613
EC		 2143 *
2144 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2145 * skb data, including linear part and fragments, but excluding TCP header.
2863c613
EC		 2146 * Checks if the result plus extra_elems fits under the limit for the card.
2147 * Returns 0 if it does not.
2148 * Note: extra_elems is not included in the returned result.
2149 */
41aeed58 2150static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2863c613 2151 struct sk_buff *skb, int extra_elems)
c3b4a740 2152{
12472af8
JW		 2153 addr_t start = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2154 addr_t end = (addr_t)skb->data + skb_headlen(skb);
2155 int elements = qeth_get_elements_for_frags(skb);
2156
2157 if (start != end)
2158 elements += qeth_get_elements_for_range(start, end);
271648b4 2159
2863c613
EC		 2160 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2161 QETH_DBF_MESSAGE(2,
2162 "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2163 elements + extra_elems, skb->len);
2164 return 0;
2165 }
c3b4a740
FB		 2166 return elements;
2167}
2168
2d3986d1
JW		 2169static void qeth_l3_fixup_headers(struct sk_buff *skb)
2170{
2171 struct iphdr *iph = ip_hdr(skb);
2172
2173 /* this is safe, IPv6 traffic takes a different path */
2174 if (skb->ip_summed == CHECKSUM_PARTIAL)
2175 iph->check = 0;
2176}
2177
a647a025
JW		 2178static int qeth_l3_xmit_offload(struct qeth_card *card, struct sk_buff *skb,
2179 struct qeth_qdio_out_q *queue, int ipv,
2180 int cast_type)
2181{
2182 const unsigned int hw_hdr_len = sizeof(struct qeth_hdr);
ba86ceee 2183 unsigned int frame_len, elements;
a647a025 2184 unsigned char eth_hdr[ETH_HLEN];
a647a025
JW		 2185 struct qeth_hdr *hdr = NULL;
2186 unsigned int hd_len = 0;
ba86ceee 2187 int push_len, rc;
d2a274b2 2188 bool is_sg;
a647a025 2189
a647a025
JW		 2190 /* re-use the L2 header area for the HW header: */
2191 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2192 if (rc)
2193 return rc;
2194 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN);
2195 skb_pull(skb, ETH_HLEN);
2196 frame_len = skb->len;
a647a025 2197
2d3986d1 2198 qeth_l3_fixup_headers(skb);
a7c2f4a3
JW		 2199 push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, 0,
2200 &elements);
a647a025
JW		 2201 if (push_len < 0)
2202 return push_len;
2203 if (!push_len) {
2204 /* hdr was added discontiguous from skb->data */
2205 hd_len = hw_hdr_len;
a647a025
JW		 2206 }
2207
2208 if (skb->protocol == htons(ETH_P_AF_IUCV))
2209 qeth_l3_fill_af_iucv_hdr(hdr, skb, frame_len);
2210 else
2211 qeth_l3_fill_header(card, hdr, skb, ipv, cast_type, frame_len);
2212
d2a274b2 2213 is_sg = skb_is_nonlinear(skb);
fb321f25
JW		 2214 if (IS_IQD(card)) {
2215 rc = qeth_do_send_packet_fast(queue, skb, hdr, 0, hd_len);
2216 } else {
2217 /* TODO: drop skb_orphan() once TX completion is fast enough */
2218 skb_orphan(skb);
2219 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len,
2220 elements);
2221 }
ba86ceee 2222
a647a025 2223 if (!rc) {
d2a274b2
JW		 2224 if (card->options.performance_stats) {
2225 card->perf_stats.buf_elements_sent += elements;
2226 if (is_sg)
2227 card->perf_stats.sg_skbs_sent++;
a647a025
JW		 2228 }
2229 } else {
2230 if (!push_len)
2231 kmem_cache_free(qeth_core_header_cache, hdr);
2232 if (rc == -EBUSY) {
2233 /* roll back to ETH header */
2234 skb_pull(skb, push_len);
2235 skb_push(skb, ETH_HLEN);
2236 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
2237 }
2238 }
2239 return rc;
2240}
2241
ea1d4a0c
JW		 2242static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2243 struct qeth_qdio_out_q *queue, int ipv, int cast_type)
4a71df50 2244{
4a71df50 2245 struct qeth_hdr *hdr = NULL;
4a71df50 2246 struct sk_buff *new_skb = NULL;
4a71df50 2247 int tx_bytes = skb->len;
d2a274b2 2248 unsigned int hd_len;
0a6da4b1
JW		 2249 int elements, rc;
2250 bool is_sg;
683d718a 2251
a647a025 2252 /* create a clone with writeable headroom */
0a6da4b1 2253 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso));
a647a025
JW		 2254 if (!new_skb)
2255 return -ENOMEM;
4a71df50 2256
0a6da4b1 2257 skb_pull(new_skb, ETH_HLEN);
4a71df50 2258
4a71df50 2259 /* fix hardware limitation: as long as we do not have sbal
64ef8957 2260 * chaining we can not send long frag lists
4a71df50 2261 */
0a6da4b1 2262 if (!qeth_l3_get_elements_no_tso(card, new_skb, 1)) {
ea1d4a0c 2263 rc = skb_linearize(new_skb);
6059c905
EC		 2264
2265 if (card->options.performance_stats) {
ea1d4a0c 2266 if (rc)
6059c905
EC		 2267 card->perf_stats.tx_linfail++;
2268 else
2269 card->perf_stats.tx_lin++;
2270 }
ea1d4a0c
JW		 2271 if (rc)
2272 goto out;
64ef8957 2273 }
4a71df50 2274
0a6da4b1
JW		 2275 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2276 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2277 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type,
2278 new_skb->len - sizeof(struct qeth_hdr_tso));
2279 qeth_tso_fill_header(card, hdr, new_skb);
4a71df50 2280
0a6da4b1 2281 elements = qeth_l3_get_elements_no_tso(card, new_skb, 1);
2863c613 2282 if (!elements) {
ea1d4a0c
JW		 2283 rc = -E2BIG;
2284 goto out;
f61a0d05 2285 }
0a6da4b1 2286 elements++;
4a71df50 2287
0a6da4b1
JW		 2288 hd_len = sizeof(struct qeth_hdr_tso) + ip_hdrlen(new_skb) +
2289 tcp_hdrlen(new_skb);
4a71df50 2290
0a6da4b1 2291 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, hd_len)) {
a647a025
JW		 2292 rc = -EINVAL;
2293 goto out;
2294 }
d2a274b2
JW		 2295
2296 is_sg = skb_is_nonlinear(new_skb);
a647a025
JW		 2297 rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len, hd_len,
2298 elements);
ea1d4a0c 2299out:
4a71df50 2300 if (!rc) {
4a71df50
FB		 2301 if (new_skb != skb)
2302 dev_kfree_skb_any(skb);
2303 if (card->options.performance_stats) {
d2a274b2
JW		 2304 card->perf_stats.buf_elements_sent += elements;
2305 if (is_sg)
2306 card->perf_stats.sg_skbs_sent++;
0a6da4b1
JW		 2307 card->perf_stats.large_send_bytes += tx_bytes;
2308 card->perf_stats.large_send_cnt++;
4a71df50 2309 }
4a71df50 2310 } else {
ea1d4a0c
JW		 2311 if (new_skb != skb)
2312 dev_kfree_skb_any(new_skb);
ea1d4a0c
JW		 2313 }
2314 return rc;
2315}
683d718a 2316
ea1d4a0c
JW		 2317static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2318 struct net_device *dev)
2319{
2320 int cast_type = qeth_l3_get_cast_type(skb);
2321 struct qeth_card *card = dev->ml_priv;
2322 int ipv = qeth_get_ip_version(skb);
2323 struct qeth_qdio_out_q *queue;
2324 int tx_bytes = skb->len;
2325 int rc;
2326
2327 if (IS_IQD(card)) {
2328 if (card->options.sniffer)
2329 goto tx_drop;
2330 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2331 (card->options.cq == QETH_CQ_ENABLED &&
2332 skb->protocol != htons(ETH_P_AF_IUCV)))
4a71df50
FB		 2333 goto tx_drop;
2334 }
2335
ea1d4a0c
JW		 2336 if (card->state != CARD_STATE_UP || !card->lan_online) {
2337 card->stats.tx_carrier_errors++;
2338 goto tx_drop;
2339 }
2340
2341 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable)
2342 goto tx_drop;
2343
2344 queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
2345
2346 if (card->options.performance_stats) {
2347 card->perf_stats.outbound_cnt++;
2348 card->perf_stats.outbound_start_time = qeth_get_micros();
2349 }
2350 netif_stop_queue(dev);
2351
fb321f25 2352 if (IS_IQD(card) || (!skb_is_gso(skb) && ipv == 4))
a647a025 2353 rc = qeth_l3_xmit_offload(card, skb, queue, ipv, cast_type);
f13ade19 2354 else if (skb_is_gso(skb))
a647a025 2355 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type);
f13ade19
JW		 2356 else
2357 rc = qeth_xmit(card, skb, queue, ipv, cast_type,
2358 qeth_l3_fill_header);
ea1d4a0c
JW		 2359
2360 if (!rc) {
2361 card->stats.tx_packets++;
2362 card->stats.tx_bytes += tx_bytes;
2363 if (card->options.performance_stats)
2364 card->perf_stats.outbound_time += qeth_get_micros() -
2365 card->perf_stats.outbound_start_time;
2366 netif_wake_queue(dev);
2367 return NETDEV_TX_OK;
2368 } else if (rc == -EBUSY) {
2369 return NETDEV_TX_BUSY;
2370 } /* else fall through */
4a71df50
FB		 2371
2372tx_drop:
2373 card->stats.tx_dropped++;
2374 card->stats.tx_errors++;
4a71df50 2375 dev_kfree_skb_any(skb);
d0ec0f54 2376 netif_wake_queue(dev);
4a71df50
FB		 2377 return NETDEV_TX_OK;
2378}
2379
39423440 2380static int __qeth_l3_open(struct net_device *dev)
4a71df50 2381{
509e2562 2382 struct qeth_card *card = dev->ml_priv;
a1c3ed4c 2383 int rc = 0;
4a71df50 2384
847a50fd 2385 QETH_CARD_TEXT(card, 4, "qethopen");
39423440
UB		 2386 if (card->state == CARD_STATE_UP)
2387 return rc;
4a71df50
FB		 2388 if (card->state != CARD_STATE_SOFTSETUP)
2389 return -ENODEV;
2390 card->data.state = CH_STATE_UP;
2391 card->state = CARD_STATE_UP;
4a71df50
FB		 2392 netif_start_queue(dev);
2393
a1c3ed4c
FB		 2394 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2395 napi_enable(&card->napi);
2396 napi_schedule(&card->napi);
2397 } else
2398 rc = -EIO;
2399 return rc;
4a71df50
FB		 2400}
2401
39423440
UB		 2402static int qeth_l3_open(struct net_device *dev)
2403{
2404 struct qeth_card *card = dev->ml_priv;
2405
2406 QETH_CARD_TEXT(card, 5, "qethope_");
2407 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2408 QETH_CARD_TEXT(card, 3, "openREC");
2409 return -ERESTARTSYS;
2410 }
2411 return __qeth_l3_open(dev);
2412}
2413
4a71df50
FB		 2414static int qeth_l3_stop(struct net_device *dev)
2415{
509e2562 2416 struct qeth_card *card = dev->ml_priv;
4a71df50 2417
847a50fd 2418 QETH_CARD_TEXT(card, 4, "qethstop");
4a71df50 2419 netif_tx_disable(dev);
a1c3ed4c 2420 if (card->state == CARD_STATE_UP) {
4a71df50 2421 card->state = CARD_STATE_SOFTSETUP;
a1c3ed4c
FB		 2422 napi_disable(&card->napi);
2423 }
4a71df50
FB		 2424 return 0;
2425}
2426
0fc0b732 2427static const struct ethtool_ops qeth_l3_ethtool_ops = {
4a71df50 2428 .get_link = ethtool_op_get_link,
4a71df50
FB		 2429 .get_strings = qeth_core_get_strings,
2430 .get_ethtool_stats = qeth_core_get_ethtool_stats,
df8b4ec8 2431 .get_sset_count = qeth_core_get_sset_count,
4a71df50 2432 .get_drvinfo = qeth_core_get_drvinfo,
993e19c0 2433 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
4a71df50
FB		 2434};
2435
2436/*
2437 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2438 * NOARP on the netdevice is no option because it also turns off neighbor
2439 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2440 * arp resolution but we want the hard header (packet socket will work
2441 * e.g. tcpdump)
2442 */
2443static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2444{
2445 n->nud_state = NUD_NOARP;
2446 memcpy(n->ha, "FAKELL", 6);
2447 n->output = n->ops->connected_output;
2448 return 0;
2449}
2450
2451static int
2452qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2453{
2454 if (np->tbl->family == AF_INET)
2455 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2456
2457 return 0;
2458}
2459
f13ade19
JW		 2460static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2461 struct net_device *dev,
2462 netdev_features_t features)
2463{
2464 if (qeth_get_ip_version(skb) != 4)
2465 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2466 return qeth_features_check(skb, dev, features);
2467}
2468
3d58cefd 2469static const struct net_device_ops qeth_l3_netdev_ops = {
8403b13c
FB		 2470 .ndo_open = qeth_l3_open,
2471 .ndo_stop = qeth_l3_stop,
2472 .ndo_get_stats = qeth_get_stats,
2473 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2474 .ndo_validate_addr = eth_validate_addr,
00c163f1 2475 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
942d6984 2476 .ndo_do_ioctl = qeth_do_ioctl,
8f43fb00
TR		 2477 .ndo_fix_features = qeth_fix_features,
2478 .ndo_set_features = qeth_set_features,
8403b13c
FB		 2479 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2480 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
7ff0bcf6 2481 .ndo_tx_timeout = qeth_tx_timeout,
8403b13c
FB		 2482};
2483
3d58cefd
FB		 2484static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2485 .ndo_open = qeth_l3_open,
2486 .ndo_stop = qeth_l3_stop,
2487 .ndo_get_stats = qeth_get_stats,
2488 .ndo_start_xmit = qeth_l3_hard_start_xmit,
f13ade19 2489 .ndo_features_check = qeth_l3_osa_features_check,
3d58cefd 2490 .ndo_validate_addr = eth_validate_addr,
00c163f1 2491 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
942d6984 2492 .ndo_do_ioctl = qeth_do_ioctl,
8f43fb00
TR		 2493 .ndo_fix_features = qeth_fix_features,
2494 .ndo_set_features = qeth_set_features,
3d58cefd
FB		 2495 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2496 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
7ff0bcf6 2497 .ndo_tx_timeout = qeth_tx_timeout,
3d58cefd
FB		 2498 .ndo_neigh_setup = qeth_l3_neigh_setup,
2499};
2500
4a71df50
FB		 2501static int qeth_l3_setup_netdev(struct qeth_card *card)
2502{
1aec42bc
TR		 2503 int rc;
2504
d3d1b205
JW		 2505 if (card->dev->netdev_ops)
2506 return 0;
2507
5113fec0
UB		 2508 if (card->info.type == QETH_CARD_TYPE_OSD ||
2509 card->info.type == QETH_CARD_TYPE_OSX) {
4a71df50
FB		 2510 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2511 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
1abd2296
PG		 2512 pr_info("qeth_l3: ignoring TR device\n");
2513 return -ENODEV;
1b811432
KM		 2514 }
2515
1b811432 2516 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
f13ade19
JW		 2517 card->dev->needed_headroom = sizeof(struct qeth_hdr);
2518 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2519 card->dev->needed_headroom += VLAN_HLEN;
1b811432
KM		 2520
2521 /*IPv6 address autoconfiguration stuff*/
2522 qeth_l3_get_unique_id(card);
2523 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2524 card->dev->dev_id = card->info.unique_id & 0xffff;
2525
1b811432
KM		 2526 if (!card->info.guestlan) {
2527 card->dev->features |= NETIF_F_SG;
2528 card->dev->hw_features |= NETIF_F_TSO |
2529 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2530 card->dev->vlan_features |= NETIF_F_TSO |
2531 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
4a71df50 2532 }
571f9dd8
KM		 2533
2534 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2535 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2536 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2537 }
4a71df50 2538 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
4a71df50 2539 card->dev->flags |= IFF_NOARP;
3d58cefd 2540 card->dev->netdev_ops = &qeth_l3_netdev_ops;
f13ade19 2541 card->dev->needed_headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
a647a025 2542
1aec42bc
TR		 2543 rc = qeth_l3_iqd_read_initial_mac(card);
2544 if (rc)
d3d1b205
JW		 2545 goto out;
2546
b3332930
FB		 2547 if (card->options.hsuid[0])
2548 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
4a71df50
FB		 2549 } else
2550 return -ENODEV;
2551
7ad24ea4 2552 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
f646968f
PM		 2553 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2554 NETIF_F_HW_VLAN_CTAG_RX |
2555 NETIF_F_HW_VLAN_CTAG_FILTER;
a647a025 2556
02875878 2557 netif_keep_dst(card->dev);
371a1e7a
JW		 2558 if (card->dev->hw_features & NETIF_F_TSO)
2559 netif_set_gso_max_size(card->dev,
2560 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
4a71df50 2561
d73ef324 2562 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
d3d1b205
JW		 2563 rc = register_netdev(card->dev);
2564out:
2565 if (rc)
2566 card->dev->netdev_ops = NULL;
2567 return rc;
4a71df50
FB		 2568}
2569
79a04e40
UB		 2570static const struct device_type qeth_l3_devtype = {
2571 .name = "qeth_layer3",
2572 .groups = qeth_l3_attr_groups,
2573};
2574
4a71df50
FB		 2575static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2576{
2577 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
9111e788 2578 int rc;
4a71df50 2579
79a04e40
UB		 2580 if (gdev->dev.type == &qeth_generic_devtype) {
2581 rc = qeth_l3_create_device_attributes(&gdev->dev);
2582 if (rc)
2583 return rc;
2584 }
ebccc739
UB		 2585 hash_init(card->ip_htable);
2586 hash_init(card->ip_mc_htable);
4a71df50 2587 card->options.layer2 = 0;
1da74b1c 2588 card->info.hwtrap = 0;
4a71df50
FB		 2589 return 0;
2590}
2591
2592static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2593{
2594 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2595
79a04e40
UB		 2596 if (cgdev->dev.type == &qeth_generic_devtype)
2597 qeth_l3_remove_device_attributes(&cgdev->dev);
9dc48ccc 2598
f2148565 2599 qeth_set_allowed_threads(card, 0, 1);
4a71df50
FB		 2600 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2601
70919e23 2602 if (cgdev->state == CCWGROUP_ONLINE)
4a71df50 2603 qeth_l3_set_offline(cgdev);
4a71df50 2604
d3d1b205 2605 unregister_netdev(card->dev);
5f78e29c 2606 qeth_l3_clear_ip_htable(card, 0);
4a71df50 2607 qeth_l3_clear_ipato_list(card);
4a71df50
FB		 2608}
2609
2610static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2611{
2612 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2613 int rc = 0;
2614 enum qeth_card_states recover_flag;
2615
9dc48ccc 2616 mutex_lock(&card->discipline_mutex);
c4949f07 2617 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 2618 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2619 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4a71df50 2620
4a71df50 2621 recover_flag = card->state;
4a71df50
FB		 2622 rc = qeth_core_hardsetup_card(card);
2623 if (rc) {
1aec42bc 2624 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
aa909224 2625 rc = -ENODEV;
4a71df50
FB		 2626 goto out_remove;
2627 }
2628
d3d1b205
JW		 2629 rc = qeth_l3_setup_netdev(card);
2630 if (rc)
4a71df50
FB		 2631 goto out_remove;
2632
1da74b1c
FB		 2633 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2634 if (card->info.hwtrap &&
2635 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2636 card->info.hwtrap = 0;
2637 } else
2638 card->info.hwtrap = 0;
2639
4a71df50
FB		 2640 card->state = CARD_STATE_HARDSETUP;
2641 qeth_print_status_message(card);
2642
2643 /* softsetup */
d11ba0c4 2644 QETH_DBF_TEXT(SETUP, 2, "softsetp");
4a71df50 2645
4a71df50
FB		 2646 rc = qeth_l3_setadapter_parms(card);
2647 if (rc)
1aec42bc 2648 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
76b11f8e
UB		 2649 if (!card->options.sniffer) {
2650 rc = qeth_l3_start_ipassists(card);
0f54761d 2651 if (rc) {
76b11f8e 2652 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
0f54761d
SR		 2653 goto out_remove;
2654 }
76b11f8e
UB		 2655 rc = qeth_l3_setrouting_v4(card);
2656 if (rc)
1aec42bc 2657 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
76b11f8e
UB		 2658 rc = qeth_l3_setrouting_v6(card);
2659 if (rc)
1aec42bc 2660 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
76b11f8e 2661 }
4a71df50
FB		 2662 netif_tx_disable(card->dev);
2663
2664 rc = qeth_init_qdio_queues(card);
2665 if (rc) {
d11ba0c4 2666 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
aa909224 2667 rc = -ENODEV;
4a71df50
FB		 2668 goto out_remove;
2669 }
2670 card->state = CARD_STATE_SOFTSETUP;
4a71df50
FB		 2671
2672 qeth_set_allowed_threads(card, 0xffffffff, 0);
5f78e29c 2673 qeth_l3_recover_ip(card);
2b6203bb
UB		 2674 if (card->lan_online)
2675 netif_carrier_on(card->dev);
2676 else
2677 netif_carrier_off(card->dev);
d025da9e
JW		 2678
2679 qeth_enable_hw_features(card->dev);
8af7c5ae 2680 if (recover_flag == CARD_STATE_RECOVER) {
4763b0a0 2681 rtnl_lock();
9aa17df3 2682 if (recovery_mode) {
39423440 2683 __qeth_l3_open(card->dev);
9aa17df3
JW		 2684 qeth_l3_set_rx_mode(card->dev);
2685 } else {
8af7c5ae 2686 dev_open(card->dev);
9aa17df3 2687 }
4763b0a0 2688 rtnl_unlock();
4a71df50 2689 }
82f77cf9 2690 qeth_trace_features(card);
4a71df50
FB		 2691 /* let user_space know that device is online */
2692 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
c4949f07 2693 mutex_unlock(&card->conf_mutex);
9dc48ccc 2694 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 2695 return 0;
2696out_remove:
4a71df50
FB		 2697 qeth_l3_stop_card(card, 0);
2698 ccw_device_set_offline(CARD_DDEV(card));
2699 ccw_device_set_offline(CARD_WDEV(card));
2700 ccw_device_set_offline(CARD_RDEV(card));
22ae2790 2701 qdio_free(CARD_DDEV(card));
4a71df50
FB		 2702 if (recover_flag == CARD_STATE_RECOVER)
2703 card->state = CARD_STATE_RECOVER;
2704 else
2705 card->state = CARD_STATE_DOWN;
c4949f07 2706 mutex_unlock(&card->conf_mutex);
9dc48ccc 2707 mutex_unlock(&card->discipline_mutex);
aa909224 2708 return rc;
4a71df50
FB		 2709}
2710
2711static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2712{
2713 return __qeth_l3_set_online(gdev, 0);
2714}
2715
2716static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2717 int recovery_mode)
2718{
2719 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2720 int rc = 0, rc2 = 0, rc3 = 0;
2721 enum qeth_card_states recover_flag;
2722
9dc48ccc 2723 mutex_lock(&card->discipline_mutex);
c4949f07 2724 mutex_lock(&card->conf_mutex);
d11ba0c4
PT		 2725 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2726 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
4a71df50 2727
d3d1b205 2728 netif_carrier_off(card->dev);
4a71df50 2729 recover_flag = card->state;
1da74b1c
FB		 2730 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2731 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2732 card->info.hwtrap = 1;
2733 }
0f5623c9 2734 qeth_l3_stop_card(card, recovery_mode);
72861ae7
EL		 2735 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
2736 rtnl_lock();
2737 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2738 rtnl_unlock();
2739 }
4a71df50
FB		 2740 rc = ccw_device_set_offline(CARD_DDEV(card));
2741 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2742 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2743 if (!rc)
2744 rc = (rc2) ? rc2 : rc3;
2745 if (rc)
d11ba0c4 2746 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
22ae2790 2747 qdio_free(CARD_DDEV(card));
4a71df50
FB		 2748 if (recover_flag == CARD_STATE_UP)
2749 card->state = CARD_STATE_RECOVER;
2750 /* let user_space know that device is offline */
2751 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
c4949f07 2752 mutex_unlock(&card->conf_mutex);
9dc48ccc 2753 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 2754 return 0;
2755}
2756
2757static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2758{
2759 return __qeth_l3_set_offline(cgdev, 0);
2760}
2761
2762static int qeth_l3_recover(void *ptr)
2763{
2764 struct qeth_card *card;
2765 int rc = 0;
2766
2767 card = (struct qeth_card *) ptr;
847a50fd
CO		 2768 QETH_CARD_TEXT(card, 2, "recover1");
2769 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
4a71df50
FB		 2770 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2771 return 0;
847a50fd 2772 QETH_CARD_TEXT(card, 2, "recover2");
74eacdb9
FB		 2773 dev_warn(&card->gdev->dev,
2774 "A recovery process has been started for the device\n");
65d8013c 2775 qeth_set_recovery_task(card);
4a71df50
FB		 2776 __qeth_l3_set_offline(card->gdev, 1);
2777 rc = __qeth_l3_set_online(card->gdev, 1);
4a71df50 2778 if (!rc)
74eacdb9
FB		 2779 dev_info(&card->gdev->dev,
2780 "Device successfully recovered!\n");
28a7e4c9 2781 else {
0f54761d
SR		 2782 qeth_close_dev(card);
2783 dev_warn(&card->gdev->dev, "The qeth device driver "
2efaf5ff 2784 "failed to recover an error on the device\n");
28a7e4c9 2785 }
65d8013c 2786 qeth_clear_recovery_task(card);
a1c3ed4c
FB		 2787 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2788 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
4a71df50
FB		 2789 return 0;
2790}
2791
bbcfcdc8
FB		 2792static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2793{
2794 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2795
d3d1b205 2796 netif_device_detach(card->dev);
bbcfcdc8
FB		 2797 qeth_set_allowed_threads(card, 0, 1);
2798 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2799 if (gdev->state == CCWGROUP_OFFLINE)
2800 return 0;
2801 if (card->state == CARD_STATE_UP) {
1da74b1c
FB		 2802 if (card->info.hwtrap)
2803 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
bbcfcdc8
FB		 2804 __qeth_l3_set_offline(card->gdev, 1);
2805 } else
2806 __qeth_l3_set_offline(card->gdev, 0);
2807 return 0;
2808}
2809
2810static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2811{
2812 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2813 int rc = 0;
2814
2815 if (gdev->state == CCWGROUP_OFFLINE)
2816 goto out;
2817
2818 if (card->state == CARD_STATE_RECOVER) {
2819 rc = __qeth_l3_set_online(card->gdev, 1);
2820 if (rc) {
869da90b
UB		 2821 rtnl_lock();
2822 dev_close(card->dev);
2823 rtnl_unlock();
bbcfcdc8
FB		 2824 }
2825 } else
2826 rc = __qeth_l3_set_online(card->gdev, 0);
2827out:
2828 qeth_set_allowed_threads(card, 0xffffffff, 0);
d3d1b205 2829 netif_device_attach(card->dev);
bbcfcdc8
FB		 2830 if (rc)
2831 dev_warn(&card->gdev->dev, "The qeth device driver "
2832 "failed to recover an error on the device\n");
2833 return rc;
2834}
2835
c044dc21
EC		 2836/* Returns zero if the command is successfully "consumed" */
2837static int qeth_l3_control_event(struct qeth_card *card,
2838 struct qeth_ipa_cmd *cmd)
2839{
2840 return 1;
2841}
2842
c041f2d4 2843struct qeth_discipline qeth_l3_discipline = {
79a04e40 2844 .devtype = &qeth_l3_devtype,
d73ef324 2845 .process_rx_buffer = qeth_l3_process_inbound_buffer,
c041f2d4
SO		 2846 .recover = qeth_l3_recover,
2847 .setup = qeth_l3_probe_device,
4a71df50
FB		 2848 .remove = qeth_l3_remove_device,
2849 .set_online = qeth_l3_set_online,
2850 .set_offline = qeth_l3_set_offline,
bbcfcdc8
FB		 2851 .freeze = qeth_l3_pm_suspend,
2852 .thaw = qeth_l3_pm_resume,
2853 .restore = qeth_l3_pm_resume,
942d6984 2854 .do_ioctl = qeth_l3_do_ioctl,
c044dc21 2855 .control_event_handler = qeth_l3_control_event,
4a71df50 2856};
c041f2d4 2857EXPORT_SYMBOL_GPL(qeth_l3_discipline);
4a71df50 2858
d66b1c0d
JW		 2859static int qeth_l3_handle_ip_event(struct qeth_card *card,
2860 struct qeth_ipaddr *addr,
2861 unsigned long event)
2862{
2863 switch (event) {
2864 case NETDEV_UP:
2865 spin_lock_bh(&card->ip_lock);
2866 qeth_l3_add_ip(card, addr);
2867 spin_unlock_bh(&card->ip_lock);
2868 return NOTIFY_OK;
2869 case NETDEV_DOWN:
2870 spin_lock_bh(&card->ip_lock);
2871 qeth_l3_delete_ip(card, addr);
2872 spin_unlock_bh(&card->ip_lock);
2873 return NOTIFY_OK;
2874 default:
2875 return NOTIFY_DONE;
2876 }
2877}
2878
b9caa98c
JW		 2879static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2880{
2881 if (is_vlan_dev(dev))
2882 dev = vlan_dev_real_dev(dev);
2883 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2884 dev->netdev_ops == &qeth_l3_netdev_ops)
2885 return (struct qeth_card *) dev->ml_priv;
2886 return NULL;
2887}
2888
4a71df50 2889static int qeth_l3_ip_event(struct notifier_block *this,
76fef2b6 2890 unsigned long event, void *ptr)
4a71df50 2891{
5f78e29c 2892
4a71df50 2893 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
b9caa98c 2894 struct net_device *dev = ifa->ifa_dev->dev;
d66b1c0d 2895 struct qeth_ipaddr addr;
4a71df50
FB		 2896 struct qeth_card *card;
2897
c346dca1 2898 if (dev_net(dev) != &init_net)
76fef2b6
DM		 2899 return NOTIFY_DONE;
2900
4a71df50
FB		 2901 card = qeth_l3_get_card_from_dev(dev);
2902 if (!card)
2903 return NOTIFY_DONE;
6d8823db 2904 QETH_CARD_TEXT(card, 3, "ipevent");
4a71df50 2905
d66b1c0d
JW		 2906 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2907 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2908 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
5f78e29c 2909
d66b1c0d 2910 return qeth_l3_handle_ip_event(card, &addr, event);
4a71df50
FB		 2911}
2912
2913static struct notifier_block qeth_l3_ip_notifier = {
2914 qeth_l3_ip_event,
2915 NULL,
2916};
2917
4a71df50 2918static int qeth_l3_ip6_event(struct notifier_block *this,
76fef2b6 2919 unsigned long event, void *ptr)
4a71df50
FB		 2920{
2921 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
b9caa98c 2922 struct net_device *dev = ifa->idev->dev;
d66b1c0d 2923 struct qeth_ipaddr addr;
4a71df50
FB		 2924 struct qeth_card *card;
2925
4a71df50
FB		 2926 card = qeth_l3_get_card_from_dev(dev);
2927 if (!card)
2928 return NOTIFY_DONE;
847a50fd 2929 QETH_CARD_TEXT(card, 3, "ip6event");
4a71df50
FB		 2930 if (!qeth_is_supported(card, IPA_IPV6))
2931 return NOTIFY_DONE;
2932
d66b1c0d
JW		 2933 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
2934 addr.u.a6.addr = ifa->addr;
2935 addr.u.a6.pfxlen = ifa->prefix_len;
5f78e29c 2936
d66b1c0d 2937 return qeth_l3_handle_ip_event(card, &addr, event);
4a71df50
FB		 2938}
2939
2940static struct notifier_block qeth_l3_ip6_notifier = {
2941 qeth_l3_ip6_event,
2942 NULL,
2943};
4a71df50
FB		 2944
2945static int qeth_l3_register_notifiers(void)
2946{
2947 int rc;
2948
847a50fd 2949 QETH_DBF_TEXT(SETUP, 5, "regnotif");
4a71df50
FB		 2950 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2951 if (rc)
2952 return rc;
4a71df50
FB		 2953 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2954 if (rc) {
2955 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2956 return rc;
2957 }
4a71df50
FB		 2958 return 0;
2959}
2960
2961static void qeth_l3_unregister_notifiers(void)
2962{
847a50fd 2963 QETH_DBF_TEXT(SETUP, 5, "unregnot");
18af5c17 2964 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
18af5c17 2965 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
4a71df50
FB		 2966}
2967
2968static int __init qeth_l3_init(void)
2969{
74eacdb9 2970 pr_info("register layer 3 discipline\n");
c062204f 2971 return qeth_l3_register_notifiers();
4a71df50
FB		 2972}
2973
2974static void __exit qeth_l3_exit(void)
2975{
2976 qeth_l3_unregister_notifiers();
74eacdb9 2977 pr_info("unregister layer 3 discipline\n");
4a71df50
FB		 2978}
2979
2980module_init(qeth_l3_init);
2981module_exit(qeth_l3_exit);
2982MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2983MODULE_DESCRIPTION("qeth layer 3 discipline");
2984MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)