1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright IBM Corp. 2007, 2009
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>
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/bitops.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/etherdevice.h>
22 #include <linux/ipv6.h>
23 #include <linux/inetdevice.h>
24 #include <linux/igmp.h>
25 #include <linux/slab.h>
26 #include <linux/if_ether.h>
27 #include <linux/if_vlan.h>
28 #include <linux/skbuff.h>
32 #include <net/route.h>
34 #include <net/ip6_route.h>
35 #include <net/iucv/af_iucv.h>
36 #include <linux/hashtable.h>
40 static int qeth_l3_register_addr_entry(struct qeth_card *,
41 struct qeth_ipaddr *);
42 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
43 struct qeth_ipaddr *);
45 int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,
48 if (proto == QETH_PROT_IPV4)
49 return sprintf(buf, "%pI4", addr);
51 return sprintf(buf, "%pI6", addr);
54 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
55 struct qeth_ipaddr *query)
57 u32 key = qeth_l3_ipaddr_hash(query);
58 struct qeth_ipaddr *addr;
60 if (query->is_multicast) {
61 hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key)
62 if (qeth_l3_addr_match_ip(addr, query))
65 hash_for_each_possible(card->ip_htable, addr, hnode, key)
66 if (qeth_l3_addr_match_ip(addr, query))
72 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
77 for (i = 0; i < len; ++i) {
79 for (j = 7; j >= 0; --j) {
80 bits[i*8 + j] = octet & 1;
86 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
87 struct qeth_ipaddr *addr)
89 struct qeth_ipato_entry *ipatoe;
90 u8 addr_bits[128] = {0, };
91 u8 ipatoe_bits[128] = {0, };
94 if (!card->ipato.enabled)
96 if (addr->type != QETH_IP_TYPE_NORMAL)
99 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
100 (addr->proto == QETH_PROT_IPV4) ? 4 : 16);
101 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
102 if (addr->proto != ipatoe->proto)
104 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
105 (ipatoe->proto == QETH_PROT_IPV4) ?
107 rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits);
112 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
114 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
120 static int qeth_l3_delete_ip(struct qeth_card *card,
121 struct qeth_ipaddr *tmp_addr)
124 struct qeth_ipaddr *addr;
126 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
127 QETH_CARD_TEXT(card, 2, "delrxip");
128 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
129 QETH_CARD_TEXT(card, 2, "delvipa");
131 QETH_CARD_TEXT(card, 2, "delip");
133 if (tmp_addr->proto == QETH_PROT_IPV4)
134 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
136 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
137 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
140 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
141 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
145 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
148 if (qeth_card_hw_is_reachable(card))
149 rc = qeth_l3_deregister_addr_entry(card, addr);
151 hash_del(&addr->hnode);
157 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
160 struct qeth_ipaddr *addr;
163 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
164 QETH_CARD_TEXT(card, 2, "addrxip");
165 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
166 QETH_CARD_TEXT(card, 2, "addvipa");
168 QETH_CARD_TEXT(card, 2, "addip");
170 if (tmp_addr->proto == QETH_PROT_IPV4)
171 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
173 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
174 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
177 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
179 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
181 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
185 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
187 dev_warn(&card->gdev->dev,
188 "Registering IP address %s failed\n", buf);
191 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
195 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
196 QETH_CARD_TEXT(card, 2, "tkovaddr");
199 hash_add(card->ip_htable, &addr->hnode,
200 qeth_l3_ipaddr_hash(addr));
202 if (!qeth_card_hw_is_reachable(card)) {
203 addr->disp_flag = QETH_DISP_ADDR_ADD;
207 rc = qeth_l3_register_addr_entry(card, addr);
209 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
210 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
212 hash_del(&addr->hnode);
219 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
224 mutex_lock(&card->ip_lock);
225 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
226 mutex_unlock(&card->ip_lock);
231 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
233 struct qeth_ipaddr *addr;
234 struct hlist_node *tmp;
237 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
238 hash_del(&addr->hnode);
243 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
245 struct qeth_ipaddr *addr;
246 struct hlist_node *tmp;
249 QETH_CARD_TEXT(card, 4, "clearip");
251 mutex_lock(&card->ip_lock);
253 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
255 hash_del(&addr->hnode);
259 addr->disp_flag = QETH_DISP_ADDR_ADD;
262 mutex_unlock(&card->ip_lock);
265 static void qeth_l3_recover_ip(struct qeth_card *card)
267 struct qeth_ipaddr *addr;
268 struct hlist_node *tmp;
272 QETH_CARD_TEXT(card, 4, "recovrip");
274 mutex_lock(&card->ip_lock);
276 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
277 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
278 rc = qeth_l3_register_addr_entry(card, addr);
281 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
283 hash_del(&addr->hnode);
289 mutex_unlock(&card->ip_lock);
292 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
295 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
297 switch (cmd->hdr.return_code) {
300 case IPA_RC_DUPLICATE_IP_ADDRESS:
302 case IPA_RC_MC_ADDR_NOT_FOUND:
304 case IPA_RC_LAN_OFFLINE:
311 static int qeth_l3_send_setdelmc(struct qeth_card *card,
312 struct qeth_ipaddr *addr,
313 enum qeth_ipa_cmds ipacmd)
315 struct qeth_cmd_buffer *iob;
316 struct qeth_ipa_cmd *cmd;
318 QETH_CARD_TEXT(card, 4, "setdelmc");
320 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
321 IPA_DATA_SIZEOF(setdelipm));
324 cmd = __ipa_cmd(iob);
325 if (addr->proto == QETH_PROT_IPV6) {
326 cmd->data.setdelipm.ip = addr->u.a6.addr;
327 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
329 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
330 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
333 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
336 static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len)
340 while (len && i < 4) {
341 int mask_len = min_t(int, len, 32);
343 prefix->s6_addr32[i] = inet_make_mask(mask_len);
349 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
351 switch (addr->type) {
352 case QETH_IP_TYPE_RXIP:
353 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
354 case QETH_IP_TYPE_VIPA:
355 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
356 QETH_IPA_DELIP_VIPA_FLAG;
358 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
362 static int qeth_l3_send_setdelip(struct qeth_card *card,
363 struct qeth_ipaddr *addr,
364 enum qeth_ipa_cmds ipacmd)
366 struct qeth_cmd_buffer *iob;
367 struct qeth_ipa_cmd *cmd;
370 QETH_CARD_TEXT(card, 4, "setdelip");
372 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
373 IPA_DATA_SIZEOF(setdelip6));
376 cmd = __ipa_cmd(iob);
378 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
379 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
381 if (addr->proto == QETH_PROT_IPV6) {
382 cmd->data.setdelip6.addr = addr->u.a6.addr;
383 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix,
385 cmd->data.setdelip6.flags = flags;
387 cmd->data.setdelip4.addr = addr->u.a4.addr;
388 cmd->data.setdelip4.mask = addr->u.a4.mask;
389 cmd->data.setdelip4.flags = flags;
392 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
395 static int qeth_l3_send_setrouting(struct qeth_card *card,
396 enum qeth_routing_types type, enum qeth_prot_versions prot)
399 struct qeth_ipa_cmd *cmd;
400 struct qeth_cmd_buffer *iob;
402 QETH_CARD_TEXT(card, 4, "setroutg");
403 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
404 IPA_DATA_SIZEOF(setrtg));
407 cmd = __ipa_cmd(iob);
408 cmd->data.setrtg.type = (type);
409 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
414 static int qeth_l3_correct_routing_type(struct qeth_card *card,
415 enum qeth_routing_types *type, enum qeth_prot_versions prot)
420 case PRIMARY_CONNECTOR:
421 case SECONDARY_CONNECTOR:
422 case MULTICAST_ROUTER:
431 case SECONDARY_ROUTER:
433 case MULTICAST_ROUTER:
434 if (qeth_is_ipafunc_supported(card, prot,
447 int qeth_l3_setrouting_v4(struct qeth_card *card)
451 QETH_CARD_TEXT(card, 3, "setrtg4");
453 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
458 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
461 card->options.route4.type = NO_ROUTER;
462 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
463 rc, CARD_DEVID(card));
468 int qeth_l3_setrouting_v6(struct qeth_card *card)
472 QETH_CARD_TEXT(card, 3, "setrtg6");
474 if (!qeth_is_supported(card, IPA_IPV6))
476 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
481 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
484 card->options.route6.type = NO_ROUTER;
485 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
486 rc, CARD_DEVID(card));
492 * IP address takeover related functions
496 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
498 * Caller must hold ip_lock.
500 void qeth_l3_update_ipato(struct qeth_card *card)
502 struct qeth_ipaddr *addr;
505 hash_for_each(card->ip_htable, i, addr, hnode) {
506 if (addr->type != QETH_IP_TYPE_NORMAL)
508 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
512 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
514 struct qeth_ipato_entry *ipatoe, *tmp;
516 mutex_lock(&card->ip_lock);
518 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
519 list_del(&ipatoe->entry);
523 qeth_l3_update_ipato(card);
524 mutex_unlock(&card->ip_lock);
527 int qeth_l3_add_ipato_entry(struct qeth_card *card,
528 struct qeth_ipato_entry *new)
530 struct qeth_ipato_entry *ipatoe;
533 QETH_CARD_TEXT(card, 2, "addipato");
535 mutex_lock(&card->ip_lock);
537 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
538 if (ipatoe->proto != new->proto)
540 if (!memcmp(ipatoe->addr, new->addr,
541 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) &&
542 (ipatoe->mask_bits == new->mask_bits)) {
549 list_add_tail(&new->entry, &card->ipato.entries);
550 qeth_l3_update_ipato(card);
553 mutex_unlock(&card->ip_lock);
558 int qeth_l3_del_ipato_entry(struct qeth_card *card,
559 enum qeth_prot_versions proto, u8 *addr,
560 unsigned int mask_bits)
562 struct qeth_ipato_entry *ipatoe, *tmp;
565 QETH_CARD_TEXT(card, 2, "delipato");
567 mutex_lock(&card->ip_lock);
569 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
570 if (ipatoe->proto != proto)
572 if (!memcmp(ipatoe->addr, addr,
573 (proto == QETH_PROT_IPV4) ? 4 : 16) &&
574 (ipatoe->mask_bits == mask_bits)) {
575 list_del(&ipatoe->entry);
576 qeth_l3_update_ipato(card);
582 mutex_unlock(&card->ip_lock);
587 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
588 enum qeth_ip_types type,
589 enum qeth_prot_versions proto)
591 struct qeth_ipaddr addr;
593 qeth_l3_init_ipaddr(&addr, type, proto);
594 if (proto == QETH_PROT_IPV4)
595 memcpy(&addr.u.a4.addr, ip, 4);
597 memcpy(&addr.u.a6.addr, ip, 16);
599 return qeth_l3_modify_ip(card, &addr, add);
602 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
604 struct qeth_ipaddr addr;
607 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
608 addr.u.a6.addr.s6_addr[0] = 0xfe;
609 addr.u.a6.addr.s6_addr[1] = 0x80;
610 for (i = 0; i < 8; i++)
611 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
613 return qeth_l3_modify_ip(card, &addr, add);
616 static int qeth_l3_register_addr_entry(struct qeth_card *card,
617 struct qeth_ipaddr *addr)
623 if (card->options.sniffer)
626 if (addr->proto == QETH_PROT_IPV4) {
627 QETH_CARD_TEXT(card, 2, "setaddr4");
628 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
629 } else if (addr->proto == QETH_PROT_IPV6) {
630 QETH_CARD_TEXT(card, 2, "setaddr6");
631 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
632 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
634 QETH_CARD_TEXT(card, 2, "setaddr?");
635 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
638 if (addr->is_multicast)
639 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
641 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
643 QETH_CARD_TEXT(card, 2, "failed");
644 } while ((--cnt > 0) && rc);
646 QETH_CARD_TEXT(card, 2, "FAILED");
647 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
648 dev_warn(&card->gdev->dev,
649 "Registering IP address %s failed\n", buf);
654 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
655 struct qeth_ipaddr *addr)
659 if (card->options.sniffer)
662 if (addr->proto == QETH_PROT_IPV4) {
663 QETH_CARD_TEXT(card, 2, "deladdr4");
664 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
665 } else if (addr->proto == QETH_PROT_IPV6) {
666 QETH_CARD_TEXT(card, 2, "deladdr6");
667 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
668 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
670 QETH_CARD_TEXT(card, 2, "deladdr?");
671 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
673 if (addr->is_multicast)
674 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
676 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
678 QETH_CARD_TEXT(card, 2, "failed");
683 static int qeth_l3_setadapter_parms(struct qeth_card *card)
687 QETH_CARD_TEXT(card, 2, "setadprm");
689 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
690 rc = qeth_setadpparms_change_macaddr(card);
692 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
693 " address failed\n");
699 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
703 QETH_CARD_TEXT(card, 3, "ipaarp");
705 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
706 dev_info(&card->gdev->dev,
707 "ARP processing not supported on %s!\n",
708 netdev_name(card->dev));
711 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
712 IPA_CMD_ASS_START, NULL);
714 dev_warn(&card->gdev->dev,
715 "Starting ARP processing support for %s failed\n",
716 netdev_name(card->dev));
721 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
725 QETH_CARD_TEXT(card, 3, "stsrcmac");
727 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
728 dev_info(&card->gdev->dev,
729 "Inbound source MAC-address not supported on %s\n",
730 netdev_name(card->dev));
734 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
735 IPA_CMD_ASS_START, NULL);
737 dev_warn(&card->gdev->dev,
738 "Starting source MAC-address support for %s failed\n",
739 netdev_name(card->dev));
743 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
747 QETH_CARD_TEXT(card, 3, "strtvlan");
749 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
750 dev_info(&card->gdev->dev,
751 "VLAN not supported on %s\n", netdev_name(card->dev));
755 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
756 IPA_CMD_ASS_START, NULL);
758 dev_warn(&card->gdev->dev,
759 "Starting VLAN support for %s failed\n",
760 netdev_name(card->dev));
762 dev_info(&card->gdev->dev, "VLAN enabled\n");
767 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
771 QETH_CARD_TEXT(card, 3, "stmcast");
773 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
774 dev_info(&card->gdev->dev,
775 "Multicast not supported on %s\n",
776 netdev_name(card->dev));
780 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
781 IPA_CMD_ASS_START, NULL);
783 dev_warn(&card->gdev->dev,
784 "Starting multicast support for %s failed\n",
785 netdev_name(card->dev));
787 dev_info(&card->gdev->dev, "Multicast enabled\n");
788 card->dev->flags |= IFF_MULTICAST;
793 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
798 QETH_CARD_TEXT(card, 3, "softipv6");
803 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
806 dev_err(&card->gdev->dev,
807 "Activating IPv6 support for %s failed\n",
808 netdev_name(card->dev));
811 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
814 dev_err(&card->gdev->dev,
815 "Activating IPv6 support for %s failed\n",
816 netdev_name(card->dev));
819 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
820 IPA_CMD_ASS_START, NULL);
822 dev_warn(&card->gdev->dev,
823 "Enabling the passthrough mode for %s failed\n",
824 netdev_name(card->dev));
828 dev_info(&card->gdev->dev, "IPV6 enabled\n");
832 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
834 QETH_CARD_TEXT(card, 3, "strtipv6");
836 if (!qeth_is_supported(card, IPA_IPV6)) {
837 dev_info(&card->gdev->dev,
838 "IPv6 not supported on %s\n", netdev_name(card->dev));
841 return qeth_l3_softsetup_ipv6(card);
844 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
849 QETH_CARD_TEXT(card, 3, "stbrdcst");
850 card->info.broadcast_capable = 0;
851 if (!qeth_is_supported(card, IPA_FILTERING)) {
852 dev_info(&card->gdev->dev,
853 "Broadcast not supported on %s\n",
854 netdev_name(card->dev));
858 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
859 IPA_CMD_ASS_START, NULL);
861 dev_warn(&card->gdev->dev,
862 "Enabling broadcast filtering for %s failed\n",
863 netdev_name(card->dev));
867 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
868 IPA_CMD_ASS_CONFIGURE, &filter_data);
870 dev_warn(&card->gdev->dev,
871 "Setting up broadcast filtering for %s failed\n",
872 netdev_name(card->dev));
875 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
876 dev_info(&card->gdev->dev, "Broadcast enabled\n");
877 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
878 IPA_CMD_ASS_ENABLE, &filter_data);
880 dev_warn(&card->gdev->dev,
881 "Setting up broadcast echo filtering for %s failed\n",
882 netdev_name(card->dev));
885 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
887 if (card->info.broadcast_capable)
888 card->dev->flags |= IFF_BROADCAST;
890 card->dev->flags &= ~IFF_BROADCAST;
894 static void qeth_l3_start_ipassists(struct qeth_card *card)
896 QETH_CARD_TEXT(card, 3, "strtipas");
898 qeth_l3_start_ipa_arp_processing(card); /* go on*/
899 qeth_l3_start_ipa_source_mac(card); /* go on*/
900 qeth_l3_start_ipa_vlan(card); /* go on*/
901 qeth_l3_start_ipa_multicast(card); /* go on*/
902 qeth_l3_start_ipa_ipv6(card); /* go on*/
903 qeth_l3_start_ipa_broadcast(card); /* go on*/
906 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
907 struct qeth_reply *reply, unsigned long data)
909 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
911 if (cmd->hdr.return_code)
913 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
914 return -EADDRNOTAVAIL;
916 ether_addr_copy(card->dev->dev_addr,
917 cmd->data.create_destroy_addr.mac_addr);
921 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
924 struct qeth_cmd_buffer *iob;
926 QETH_CARD_TEXT(card, 2, "hsrmac");
928 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
929 IPA_DATA_SIZEOF(create_destroy_addr));
933 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
938 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
939 struct qeth_reply *reply, unsigned long data)
941 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
942 u16 *uid = reply->param;
944 if (cmd->hdr.return_code == 0) {
945 *uid = cmd->data.create_destroy_addr.uid;
949 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
953 static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid)
955 struct qeth_cmd_buffer *iob;
957 QETH_CARD_TEXT(card, 2, "guniqeid");
959 if (!qeth_is_supported(card, IPA_IPV6))
962 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
963 IPA_DATA_SIZEOF(create_destroy_addr));
967 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid;
968 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid);
975 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
978 struct qeth_ipa_cmd *cmd;
981 QETH_CARD_TEXT(card, 2, "diastrcb");
983 cmd = (struct qeth_ipa_cmd *)data;
984 rc = cmd->hdr.return_code;
986 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
987 switch (cmd->data.diagass.action) {
988 case QETH_DIAGS_CMD_TRACE_QUERY:
990 case QETH_DIAGS_CMD_TRACE_DISABLE:
993 case IPA_RC_INVALID_SUBCMD:
994 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
995 dev_info(&card->gdev->dev, "The HiperSockets network "
996 "traffic analyzer is deactivated\n");
1002 case QETH_DIAGS_CMD_TRACE_ENABLE:
1005 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1006 dev_info(&card->gdev->dev, "The HiperSockets network "
1007 "traffic analyzer is activated\n");
1009 case IPA_RC_HARDWARE_AUTH_ERROR:
1010 dev_warn(&card->gdev->dev, "The device is not "
1011 "authorized to run as a HiperSockets network "
1012 "traffic analyzer\n");
1014 case IPA_RC_TRACE_ALREADY_ACTIVE:
1015 dev_warn(&card->gdev->dev, "A HiperSockets "
1016 "network traffic analyzer is already "
1017 "active in the HiperSockets LAN\n");
1024 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1025 cmd->data.diagass.action, CARD_DEVID(card));
1028 return rc ? -EIO : 0;
1032 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1034 struct qeth_cmd_buffer *iob;
1035 struct qeth_ipa_cmd *cmd;
1037 QETH_CARD_TEXT(card, 2, "diagtrac");
1039 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1042 cmd = __ipa_cmd(iob);
1043 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1044 cmd->data.diagass.action = diags_cmd;
1045 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1048 static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
1050 struct qeth_card *card = arg;
1051 struct inet6_dev *in6_dev;
1052 struct in_device *in4_dev;
1053 struct qeth_ipaddr *ipm;
1054 struct qeth_ipaddr tmp;
1055 struct ip_mc_list *im4;
1056 struct ifmcaddr6 *im6;
1058 QETH_CARD_TEXT(card, 4, "addmc");
1060 if (!dev || !(dev->flags & IFF_UP))
1063 in4_dev = __in_dev_get_rtnl(dev);
1067 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
1068 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1069 tmp.is_multicast = 1;
1071 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
1072 im4 = rtnl_dereference(im4->next_rcu)) {
1073 tmp.u.a4.addr = im4->multiaddr;
1075 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1077 /* for mcast, by-IP match means full match */
1078 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1082 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
1086 hash_add(card->rx_mode_addrs, &ipm->hnode,
1087 qeth_l3_ipaddr_hash(ipm));
1091 if (!qeth_is_supported(card, IPA_IPV6))
1094 in6_dev = __in6_dev_get(dev);
1098 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
1099 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1100 tmp.is_multicast = 1;
1102 for (im6 = rtnl_dereference(in6_dev->mc_list);
1104 im6 = rtnl_dereference(im6->next)) {
1105 tmp.u.a6.addr = im6->mca_addr;
1107 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1109 /* for mcast, by-IP match means full match */
1110 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1114 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
1118 hash_add(card->rx_mode_addrs, &ipm->hnode,
1119 qeth_l3_ipaddr_hash(ipm));
1127 static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1129 bool enable = card->dev->flags & IFF_PROMISC;
1131 if (card->info.promisc_mode == enable)
1134 if (IS_VM_NIC(card)) { /* Guestlan trace */
1135 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1136 qeth_setadp_promisc_mode(card, enable);
1137 } else if (card->options.sniffer && /* HiperSockets trace */
1138 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1140 QETH_CARD_TEXT(card, 3, "+promisc");
1141 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1143 QETH_CARD_TEXT(card, 3, "-promisc");
1144 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1149 static void qeth_l3_rx_mode_work(struct work_struct *work)
1151 struct qeth_card *card = container_of(work, struct qeth_card,
1153 struct qeth_ipaddr *addr;
1154 struct hlist_node *tmp;
1157 QETH_CARD_TEXT(card, 3, "setmulti");
1159 if (!card->options.sniffer) {
1161 qeth_l3_add_mcast_rtnl(card->dev, 0, card);
1162 if (qeth_is_supported(card, IPA_FULL_VLAN))
1163 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
1166 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
1167 switch (addr->disp_flag) {
1168 case QETH_DISP_ADDR_DELETE:
1169 rc = qeth_l3_deregister_addr_entry(card, addr);
1170 if (!rc || rc == -ENOENT) {
1171 hash_del(&addr->hnode);
1175 case QETH_DISP_ADDR_ADD:
1176 rc = qeth_l3_register_addr_entry(card, addr);
1177 if (rc && rc != -ENETDOWN) {
1178 hash_del(&addr->hnode);
1184 /* for next call to set_rx_mode(): */
1185 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1190 qeth_l3_set_promisc_mode(card);
1193 static int qeth_l3_arp_makerc(u16 rc)
1196 case IPA_RC_SUCCESS:
1198 case QETH_IPA_ARP_RC_NOTSUPP:
1199 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1201 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1203 case QETH_IPA_ARP_RC_Q_NO_DATA:
1210 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1213 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1215 qeth_setassparms_cb(card, reply, data);
1216 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1219 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1221 struct qeth_cmd_buffer *iob;
1224 QETH_CARD_TEXT(card, 3, "arpstnoe");
1227 * currently GuestLAN only supports the ARP assist function
1228 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1229 * thus we say EOPNOTSUPP for this ARP function
1231 if (IS_VM_NIC(card))
1233 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1237 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1238 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1239 SETASS_DATA_SIZEOF(flags_32bit),
1244 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1245 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1247 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1248 CARD_DEVID(card), rc);
1252 static __u32 get_arp_entry_size(struct qeth_card *card,
1253 struct qeth_arp_query_data *qdata,
1254 struct qeth_arp_entrytype *type, __u8 strip_entries)
1259 is_hsi = qdata->reply_bits == 5;
1260 if (type->ip == QETHARP_IP_ADDR_V4) {
1261 QETH_CARD_TEXT(card, 4, "arpev4");
1262 if (strip_entries) {
1263 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1264 sizeof(struct qeth_arp_qi_entry7_short);
1266 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1267 sizeof(struct qeth_arp_qi_entry7);
1269 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1270 QETH_CARD_TEXT(card, 4, "arpev6");
1271 if (strip_entries) {
1273 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1274 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1277 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1278 sizeof(struct qeth_arp_qi_entry7_ipv6);
1281 QETH_CARD_TEXT(card, 4, "arpinv");
1288 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1290 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1291 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1294 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1295 struct qeth_reply *reply, unsigned long data)
1297 struct qeth_ipa_cmd *cmd;
1298 struct qeth_arp_query_data *qdata;
1299 struct qeth_arp_query_info *qinfo;
1301 int entrybytes_done;
1303 __u8 do_strip_entries;
1305 QETH_CARD_TEXT(card, 3, "arpquecb");
1307 qinfo = (struct qeth_arp_query_info *) reply->param;
1308 cmd = (struct qeth_ipa_cmd *) data;
1309 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1310 if (cmd->hdr.return_code) {
1311 QETH_CARD_TEXT(card, 4, "arpcberr");
1312 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1313 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1315 if (cmd->data.setassparms.hdr.return_code) {
1316 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1317 QETH_CARD_TEXT(card, 4, "setaperr");
1318 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1319 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1321 qdata = &cmd->data.setassparms.data.query_arp;
1322 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1324 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1325 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1326 entrybytes_done = 0;
1327 for (e = 0; e < qdata->no_entries; ++e) {
1330 struct qeth_arp_entrytype *etype;
1332 cur_entry = &qdata->data + entrybytes_done;
1333 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1334 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1335 QETH_CARD_TEXT(card, 4, "pmis");
1336 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1339 esize = get_arp_entry_size(card, qdata, etype,
1341 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1345 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1346 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1347 memset(qinfo->udata, 0, 4);
1351 memcpy(qinfo->udata + qinfo->udata_offset,
1352 &qdata->data + entrybytes_done + stripped_bytes,
1354 entrybytes_done += esize + stripped_bytes;
1355 qinfo->udata_offset += esize;
1356 ++qinfo->no_entries;
1358 /* check if all replies received ... */
1359 if (cmd->data.setassparms.hdr.seq_no <
1360 cmd->data.setassparms.hdr.number_of_replies)
1362 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1363 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1364 /* keep STRIP_ENTRIES flag so the user program can distinguish
1365 * stripped entries from normal ones */
1366 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1367 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1368 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1369 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1373 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1374 enum qeth_prot_versions prot,
1375 struct qeth_arp_query_info *qinfo)
1377 struct qeth_cmd_buffer *iob;
1378 struct qeth_ipa_cmd *cmd;
1381 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1383 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1384 IPA_CMD_ASS_ARP_QUERY_INFO,
1385 SETASS_DATA_SIZEOF(query_arp), prot);
1388 cmd = __ipa_cmd(iob);
1389 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1390 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1392 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1393 CARD_DEVID(card), rc);
1397 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1399 struct qeth_arp_query_info qinfo = {0, };
1402 QETH_CARD_TEXT(card, 3, "arpquery");
1404 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1405 IPA_ARP_PROCESSING)) {
1406 QETH_CARD_TEXT(card, 3, "arpqnsup");
1410 /* get size of userspace buffer and mask_bits -> 6 bytes */
1411 if (copy_from_user(&qinfo, udata, 6)) {
1415 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1420 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1421 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1423 if (copy_to_user(udata, qinfo.udata, 4))
1427 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1428 /* fails in case of GuestLAN QDIO mode */
1429 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1431 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1432 QETH_CARD_TEXT(card, 4, "qactf");
1436 QETH_CARD_TEXT(card, 4, "qacts");
1444 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1445 struct qeth_arp_cache_entry *entry,
1446 enum qeth_arp_process_subcmds arp_cmd)
1448 struct qeth_arp_cache_entry *cmd_entry;
1449 struct qeth_cmd_buffer *iob;
1452 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1453 QETH_CARD_TEXT(card, 3, "arpadd");
1455 QETH_CARD_TEXT(card, 3, "arpdel");
1458 * currently GuestLAN only supports the ARP assist function
1459 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1460 * thus we say EOPNOTSUPP for this ARP function
1462 if (IS_VM_NIC(card))
1464 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1468 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1469 SETASS_DATA_SIZEOF(arp_entry),
1474 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1475 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1476 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1477 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1479 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1480 arp_cmd, CARD_DEVID(card), rc);
1484 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1486 struct qeth_cmd_buffer *iob;
1489 QETH_CARD_TEXT(card, 3, "arpflush");
1492 * currently GuestLAN only supports the ARP assist function
1493 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1494 * thus we say EOPNOTSUPP for this ARP function
1496 if (IS_VM_NIC(card) || IS_IQD(card))
1498 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1502 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1503 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1508 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1510 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1511 CARD_DEVID(card), rc);
1515 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
1517 struct qeth_card *card = dev->ml_priv;
1518 struct qeth_arp_cache_entry arp_entry;
1519 enum qeth_arp_process_subcmds arp_cmd;
1523 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1524 if (!capable(CAP_NET_ADMIN)) {
1528 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1530 case SIOC_QETH_ARP_QUERY_INFO:
1531 if (!capable(CAP_NET_ADMIN)) {
1535 rc = qeth_l3_arp_query(card, data);
1537 case SIOC_QETH_ARP_ADD_ENTRY:
1538 case SIOC_QETH_ARP_REMOVE_ENTRY:
1539 if (!capable(CAP_NET_ADMIN))
1541 if (copy_from_user(&arp_entry, data, sizeof(arp_entry)))
1544 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1545 IPA_CMD_ASS_ARP_ADD_ENTRY :
1546 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1547 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1548 case SIOC_QETH_ARP_FLUSH_CACHE:
1549 if (!capable(CAP_NET_ADMIN)) {
1553 rc = qeth_l3_arp_flush_cache(card);
1561 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1564 struct neighbour *n = NULL;
1567 n = dst_neigh_lookup_skb(dst, skb);
1570 int cast_type = n->type;
1573 if ((cast_type == RTN_BROADCAST) ||
1574 (cast_type == RTN_MULTICAST) ||
1575 (cast_type == RTN_ANYCAST))
1580 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1582 case htons(ETH_P_IP):
1583 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1584 return RTN_BROADCAST;
1585 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1586 RTN_MULTICAST : RTN_UNICAST;
1587 case htons(ETH_P_IPV6):
1588 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1589 RTN_MULTICAST : RTN_UNICAST;
1590 case htons(ETH_P_AF_IUCV):
1593 /* OSA only: ... and MAC address */
1594 return qeth_get_ether_cast_type(skb);
1598 static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto)
1600 struct dst_entry *dst;
1604 dst = qeth_dst_check_rcu(skb, proto);
1605 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1611 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1613 if (cast_type == RTN_MULTICAST)
1614 return QETH_CAST_MULTICAST;
1615 if (cast_type == RTN_ANYCAST)
1616 return QETH_CAST_ANYCAST;
1617 if (cast_type == RTN_BROADCAST)
1618 return QETH_CAST_BROADCAST;
1619 return QETH_CAST_UNICAST;
1622 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1623 struct qeth_hdr *hdr, struct sk_buff *skb,
1624 __be16 proto, unsigned int data_len)
1626 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1627 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1628 struct qeth_card *card = queue->card;
1629 struct dst_entry *dst;
1632 hdr->hdr.l3.length = data_len;
1634 if (skb_is_gso(skb)) {
1635 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1637 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1639 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1640 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto);
1641 /* some HW requires combined L3+L4 csum offload: */
1642 if (proto == htons(ETH_P_IP))
1643 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1647 if (proto == htons(ETH_P_IP) || IS_IQD(card)) {
1648 /* NETIF_F_HW_VLAN_CTAG_TX */
1649 if (skb_vlan_tag_present(skb)) {
1650 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1651 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1653 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1654 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1655 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1659 dst = qeth_dst_check_rcu(skb, proto);
1661 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1662 cast_type = RTN_UNICAST;
1664 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1665 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1668 case htons(ETH_P_IP):
1669 l3_hdr->next_hop.addr.s6_addr32[3] =
1670 qeth_next_hop_v4_rcu(skb, dst);
1672 case htons(ETH_P_IPV6):
1673 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
1675 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1677 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1679 case htons(ETH_P_AF_IUCV):
1680 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
1681 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
1682 iucv_trans_hdr(skb)->destUserID, 8);
1683 l3_hdr->flags |= QETH_HDR_IPV6;
1687 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1692 static void qeth_l3_fixup_headers(struct sk_buff *skb)
1694 struct iphdr *iph = ip_hdr(skb);
1696 /* this is safe, IPv6 traffic takes a different path */
1697 if (skb->ip_summed == CHECKSUM_PARTIAL)
1699 if (skb_is_gso(skb)) {
1701 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1706 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1707 struct qeth_qdio_out_q *queue, __be16 proto)
1709 unsigned int hw_hdr_len;
1712 /* re-use the L2 header area for the HW header: */
1713 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1714 sizeof(struct qeth_hdr);
1715 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1718 skb_pull(skb, ETH_HLEN);
1720 qeth_l3_fixup_headers(skb);
1721 return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1724 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1725 struct net_device *dev)
1727 struct qeth_card *card = dev->ml_priv;
1728 __be16 proto = vlan_get_protocol(skb);
1729 u16 txq = skb_get_queue_mapping(skb);
1730 struct qeth_qdio_out_q *queue;
1733 if (!skb_is_gso(skb))
1734 qdisc_skb_cb(skb)->pkt_len = skb->len;
1736 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1738 if (card->options.sniffer)
1742 case htons(ETH_P_AF_IUCV):
1743 if (card->options.cq != QETH_CQ_ENABLED)
1746 case htons(ETH_P_IP):
1747 case htons(ETH_P_IPV6):
1748 if (card->options.cq == QETH_CQ_ENABLED)
1755 queue = card->qdio.out_qs[txq];
1758 if (!(dev->flags & IFF_BROADCAST) &&
1759 qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST)
1762 if (proto == htons(ETH_P_IP) || IS_IQD(card))
1763 rc = qeth_l3_xmit(card, skb, queue, proto);
1765 rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1768 return NETDEV_TX_OK;
1771 QETH_TXQ_STAT_INC(queue, tx_dropped);
1773 return NETDEV_TX_OK;
1776 static void qeth_l3_set_rx_mode(struct net_device *dev)
1778 struct qeth_card *card = dev->ml_priv;
1780 schedule_work(&card->rx_mode_work);
1784 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
1785 * NOARP on the netdevice is no option because it also turns off neighbor
1786 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
1787 * arp resolution but we want the hard header (packet socket will work
1790 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1792 n->nud_state = NUD_NOARP;
1793 memcpy(n->ha, "FAKELL", 6);
1794 n->output = n->ops->connected_output;
1799 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1801 if (np->tbl->family == AF_INET)
1802 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1807 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1808 struct net_device *dev,
1809 netdev_features_t features)
1811 if (vlan_get_protocol(skb) != htons(ETH_P_IP))
1812 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1813 return qeth_features_check(skb, dev, features);
1816 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1817 struct net_device *sb_dev)
1819 __be16 proto = vlan_get_protocol(skb);
1821 return qeth_iqd_select_queue(dev, skb,
1822 qeth_l3_get_cast_type(skb, proto), sb_dev);
1825 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
1826 struct net_device *sb_dev)
1828 struct qeth_card *card = dev->ml_priv;
1830 if (qeth_uses_tx_prio_queueing(card))
1831 return qeth_get_priority_queue(card, skb);
1833 return netdev_pick_tx(dev, skb, sb_dev);
1836 static const struct net_device_ops qeth_l3_netdev_ops = {
1837 .ndo_open = qeth_open,
1838 .ndo_stop = qeth_stop,
1839 .ndo_get_stats64 = qeth_get_stats64,
1840 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1841 .ndo_select_queue = qeth_l3_iqd_select_queue,
1842 .ndo_validate_addr = eth_validate_addr,
1843 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1844 .ndo_eth_ioctl = qeth_do_ioctl,
1845 .ndo_siocdevprivate = qeth_siocdevprivate,
1846 .ndo_fix_features = qeth_fix_features,
1847 .ndo_set_features = qeth_set_features,
1848 .ndo_tx_timeout = qeth_tx_timeout,
1851 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
1852 .ndo_open = qeth_open,
1853 .ndo_stop = qeth_stop,
1854 .ndo_get_stats64 = qeth_get_stats64,
1855 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1856 .ndo_features_check = qeth_l3_osa_features_check,
1857 .ndo_select_queue = qeth_l3_osa_select_queue,
1858 .ndo_validate_addr = eth_validate_addr,
1859 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1860 .ndo_eth_ioctl = qeth_do_ioctl,
1861 .ndo_siocdevprivate = qeth_siocdevprivate,
1862 .ndo_fix_features = qeth_fix_features,
1863 .ndo_set_features = qeth_set_features,
1864 .ndo_tx_timeout = qeth_tx_timeout,
1865 .ndo_neigh_setup = qeth_l3_neigh_setup,
1868 static int qeth_l3_setup_netdev(struct qeth_card *card)
1870 struct net_device *dev = card->dev;
1871 unsigned int headroom;
1874 if (IS_OSD(card) || IS_OSX(card)) {
1875 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
1877 /*IPv6 address autoconfiguration stuff*/
1878 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
1880 if (!IS_VM_NIC(card)) {
1881 card->dev->features |= NETIF_F_SG;
1882 card->dev->hw_features |= NETIF_F_TSO |
1883 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1884 card->dev->vlan_features |= NETIF_F_TSO |
1885 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1888 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1889 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1890 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1892 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1893 card->dev->hw_features |= NETIF_F_TSO6;
1894 card->dev->vlan_features |= NETIF_F_TSO6;
1897 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
1898 if (card->dev->hw_features & NETIF_F_TSO6)
1899 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
1900 else if (card->dev->hw_features & NETIF_F_TSO)
1901 headroom = sizeof(struct qeth_hdr_tso);
1903 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
1904 } else if (IS_IQD(card)) {
1905 card->dev->flags |= IFF_NOARP;
1906 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1907 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
1909 rc = qeth_l3_iqd_read_initial_mac(card);
1915 card->dev->needed_headroom = headroom;
1916 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1917 NETIF_F_HW_VLAN_CTAG_RX;
1919 netif_keep_dst(card->dev);
1920 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
1921 netif_set_gso_max_size(card->dev,
1922 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
1924 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1925 return register_netdev(card->dev);
1928 static const struct device_type qeth_l3_devtype = {
1929 .name = "qeth_layer3",
1930 .groups = qeth_l3_attr_groups,
1933 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
1935 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1938 hash_init(card->ip_htable);
1939 mutex_init(&card->ip_lock);
1940 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
1941 dev_name(&gdev->dev));
1945 if (gdev->dev.type) {
1946 rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups);
1948 destroy_workqueue(card->cmd_wq);
1952 gdev->dev.type = &qeth_l3_devtype;
1955 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
1959 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
1961 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1963 if (cgdev->dev.type != &qeth_l3_devtype)
1964 device_remove_groups(&cgdev->dev, qeth_l3_attr_groups);
1966 qeth_set_allowed_threads(card, 0, 1);
1967 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1969 if (cgdev->state == CCWGROUP_ONLINE)
1970 qeth_set_offline(card, card->discipline, false);
1972 if (card->dev->reg_state == NETREG_REGISTERED)
1973 unregister_netdev(card->dev);
1975 flush_workqueue(card->cmd_wq);
1976 destroy_workqueue(card->cmd_wq);
1977 qeth_l3_clear_ip_htable(card, 0);
1978 qeth_l3_clear_ipato_list(card);
1981 static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok)
1983 struct net_device *dev = card->dev;
1987 QETH_CARD_TEXT(card, 2, "softsetp");
1989 rc = qeth_l3_setadapter_parms(card);
1991 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
1992 if (!card->options.sniffer) {
1993 qeth_l3_start_ipassists(card);
1995 rc = qeth_l3_setrouting_v4(card);
1997 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
1998 rc = qeth_l3_setrouting_v6(card);
2000 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
2003 card->state = CARD_STATE_SOFTSETUP;
2005 qeth_set_allowed_threads(card, 0xffffffff, 0);
2006 qeth_l3_recover_ip(card);
2008 if (dev->reg_state != NETREG_REGISTERED) {
2009 rc = qeth_l3_setup_netdev(card);
2014 netif_carrier_on(dev);
2017 rc = qeth_set_real_num_tx_queues(card,
2018 qeth_tx_actual_queues(card));
2021 goto err_set_queues;
2025 netif_carrier_on(dev);
2027 netif_carrier_off(dev);
2029 netif_device_attach(dev);
2030 qeth_enable_hw_features(dev);
2032 if (card->info.open_when_online) {
2033 card->info.open_when_online = 0;
2034 dev_open(dev, NULL);
2042 qeth_set_allowed_threads(card, 0, 1);
2043 card->state = CARD_STATE_DOWN;
2044 qeth_l3_clear_ip_htable(card, 1);
2048 static void qeth_l3_set_offline(struct qeth_card *card)
2050 qeth_set_allowed_threads(card, 0, 1);
2051 qeth_l3_drain_rx_mode_cache(card);
2053 if (card->options.sniffer &&
2054 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2055 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2057 if (card->state == CARD_STATE_SOFTSETUP) {
2058 card->state = CARD_STATE_DOWN;
2059 qeth_l3_clear_ip_htable(card, 1);
2063 /* Returns zero if the command is successfully "consumed" */
2064 static int qeth_l3_control_event(struct qeth_card *card,
2065 struct qeth_ipa_cmd *cmd)
2070 const struct qeth_discipline qeth_l3_discipline = {
2071 .setup = qeth_l3_probe_device,
2072 .remove = qeth_l3_remove_device,
2073 .set_online = qeth_l3_set_online,
2074 .set_offline = qeth_l3_set_offline,
2075 .do_ioctl = qeth_l3_do_ioctl,
2076 .control_event_handler = qeth_l3_control_event,
2078 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2080 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2081 struct qeth_ipaddr *addr,
2082 unsigned long event)
2086 qeth_l3_modify_ip(card, addr, true);
2089 qeth_l3_modify_ip(card, addr, false);
2096 struct qeth_l3_ip_event_work {
2097 struct work_struct work;
2098 struct qeth_card *card;
2099 struct qeth_ipaddr addr;
2102 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2104 static void qeth_l3_add_ip_worker(struct work_struct *work)
2106 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2108 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2112 static void qeth_l3_delete_ip_worker(struct work_struct *work)
2114 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2116 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2120 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2122 if (is_vlan_dev(dev))
2123 dev = vlan_dev_real_dev(dev);
2124 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2125 dev->netdev_ops == &qeth_l3_netdev_ops)
2126 return (struct qeth_card *) dev->ml_priv;
2130 static int qeth_l3_ip_event(struct notifier_block *this,
2131 unsigned long event, void *ptr)
2133 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2134 struct net_device *dev = ifa->ifa_dev->dev;
2135 struct qeth_ipaddr addr;
2136 struct qeth_card *card;
2138 card = qeth_l3_get_card_from_dev(dev);
2141 QETH_CARD_TEXT(card, 3, "ipevent");
2143 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2144 addr.u.a4.addr = ifa->ifa_address;
2145 addr.u.a4.mask = ifa->ifa_mask;
2147 return qeth_l3_handle_ip_event(card, &addr, event);
2150 static struct notifier_block qeth_l3_ip_notifier = {
2155 static int qeth_l3_ip6_event(struct notifier_block *this,
2156 unsigned long event, void *ptr)
2158 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2159 struct net_device *dev = ifa->idev->dev;
2160 struct qeth_l3_ip_event_work *ip_work;
2161 struct qeth_card *card;
2163 if (event != NETDEV_UP && event != NETDEV_DOWN)
2166 card = qeth_l3_get_card_from_dev(dev);
2169 QETH_CARD_TEXT(card, 3, "ip6event");
2170 if (!qeth_is_supported(card, IPA_IPV6))
2173 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2177 if (event == NETDEV_UP)
2178 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2180 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2182 ip_work->card = card;
2183 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2185 ip_work->addr.u.a6.addr = ifa->addr;
2186 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2188 queue_work(card->cmd_wq, &ip_work->work);
2192 static struct notifier_block qeth_l3_ip6_notifier = {
2197 static int qeth_l3_register_notifiers(void)
2201 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2202 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2205 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2207 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2213 static void qeth_l3_unregister_notifiers(void)
2215 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2216 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2217 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2220 static int __init qeth_l3_init(void)
2222 pr_info("register layer 3 discipline\n");
2223 return qeth_l3_register_notifiers();
2226 static void __exit qeth_l3_exit(void)
2228 qeth_l3_unregister_notifiers();
2229 pr_info("unregister layer 3 discipline\n");
2232 module_init(qeth_l3_init);
2233 module_exit(qeth_l3_exit);
2234 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2235 MODULE_DESCRIPTION("qeth layer 3 discipline");
2236 MODULE_LICENSE("GPL");