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,
446 int qeth_l3_setrouting_v4(struct qeth_card *card)
450 QETH_CARD_TEXT(card, 3, "setrtg4");
452 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
457 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
460 card->options.route4.type = NO_ROUTER;
461 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
462 rc, CARD_DEVID(card));
467 int qeth_l3_setrouting_v6(struct qeth_card *card)
471 QETH_CARD_TEXT(card, 3, "setrtg6");
473 if (!qeth_is_supported(card, IPA_IPV6))
475 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
480 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
483 card->options.route6.type = NO_ROUTER;
484 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
485 rc, CARD_DEVID(card));
491 * IP address takeover related functions
495 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
497 * Caller must hold ip_lock.
499 void qeth_l3_update_ipato(struct qeth_card *card)
501 struct qeth_ipaddr *addr;
504 hash_for_each(card->ip_htable, i, addr, hnode) {
505 if (addr->type != QETH_IP_TYPE_NORMAL)
507 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
511 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
513 struct qeth_ipato_entry *ipatoe, *tmp;
515 mutex_lock(&card->ip_lock);
517 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
518 list_del(&ipatoe->entry);
522 qeth_l3_update_ipato(card);
523 mutex_unlock(&card->ip_lock);
526 int qeth_l3_add_ipato_entry(struct qeth_card *card,
527 struct qeth_ipato_entry *new)
529 struct qeth_ipato_entry *ipatoe;
532 QETH_CARD_TEXT(card, 2, "addipato");
534 mutex_lock(&card->ip_lock);
536 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
537 if (ipatoe->proto != new->proto)
539 if (!memcmp(ipatoe->addr, new->addr,
540 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) &&
541 (ipatoe->mask_bits == new->mask_bits)) {
548 list_add_tail(&new->entry, &card->ipato.entries);
549 qeth_l3_update_ipato(card);
552 mutex_unlock(&card->ip_lock);
557 int qeth_l3_del_ipato_entry(struct qeth_card *card,
558 enum qeth_prot_versions proto, u8 *addr,
559 unsigned int mask_bits)
561 struct qeth_ipato_entry *ipatoe, *tmp;
564 QETH_CARD_TEXT(card, 2, "delipato");
566 mutex_lock(&card->ip_lock);
568 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
569 if (ipatoe->proto != proto)
571 if (!memcmp(ipatoe->addr, addr,
572 (proto == QETH_PROT_IPV4) ? 4 : 16) &&
573 (ipatoe->mask_bits == mask_bits)) {
574 list_del(&ipatoe->entry);
575 qeth_l3_update_ipato(card);
581 mutex_unlock(&card->ip_lock);
586 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
587 enum qeth_ip_types type,
588 enum qeth_prot_versions proto)
590 struct qeth_ipaddr addr;
592 qeth_l3_init_ipaddr(&addr, type, proto);
593 if (proto == QETH_PROT_IPV4)
594 memcpy(&addr.u.a4.addr, ip, 4);
596 memcpy(&addr.u.a6.addr, ip, 16);
598 return qeth_l3_modify_ip(card, &addr, add);
601 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
603 struct qeth_ipaddr addr;
606 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
607 addr.u.a6.addr.s6_addr[0] = 0xfe;
608 addr.u.a6.addr.s6_addr[1] = 0x80;
609 for (i = 0; i < 8; i++)
610 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
612 return qeth_l3_modify_ip(card, &addr, add);
615 static int qeth_l3_register_addr_entry(struct qeth_card *card,
616 struct qeth_ipaddr *addr)
622 if (card->options.sniffer)
625 if (addr->proto == QETH_PROT_IPV4) {
626 QETH_CARD_TEXT(card, 2, "setaddr4");
627 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
628 } else if (addr->proto == QETH_PROT_IPV6) {
629 QETH_CARD_TEXT(card, 2, "setaddr6");
630 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
631 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
633 QETH_CARD_TEXT(card, 2, "setaddr?");
634 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
637 if (addr->is_multicast)
638 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
640 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
642 QETH_CARD_TEXT(card, 2, "failed");
643 } while ((--cnt > 0) && rc);
645 QETH_CARD_TEXT(card, 2, "FAILED");
646 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
647 dev_warn(&card->gdev->dev,
648 "Registering IP address %s failed\n", buf);
653 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
654 struct qeth_ipaddr *addr)
658 if (card->options.sniffer)
661 if (addr->proto == QETH_PROT_IPV4) {
662 QETH_CARD_TEXT(card, 2, "deladdr4");
663 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
664 } else if (addr->proto == QETH_PROT_IPV6) {
665 QETH_CARD_TEXT(card, 2, "deladdr6");
666 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
667 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
669 QETH_CARD_TEXT(card, 2, "deladdr?");
670 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
672 if (addr->is_multicast)
673 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
675 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
677 QETH_CARD_TEXT(card, 2, "failed");
682 static int qeth_l3_setadapter_parms(struct qeth_card *card)
686 QETH_CARD_TEXT(card, 2, "setadprm");
688 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
689 rc = qeth_setadpparms_change_macaddr(card);
691 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
692 " address failed\n");
698 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
702 QETH_CARD_TEXT(card, 3, "ipaarp");
704 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
705 dev_info(&card->gdev->dev,
706 "ARP processing not supported on %s!\n",
707 netdev_name(card->dev));
710 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
711 IPA_CMD_ASS_START, NULL);
713 dev_warn(&card->gdev->dev,
714 "Starting ARP processing support for %s failed\n",
715 netdev_name(card->dev));
720 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
724 QETH_CARD_TEXT(card, 3, "stsrcmac");
726 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
727 dev_info(&card->gdev->dev,
728 "Inbound source MAC-address not supported on %s\n",
729 netdev_name(card->dev));
733 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
734 IPA_CMD_ASS_START, NULL);
736 dev_warn(&card->gdev->dev,
737 "Starting source MAC-address support for %s failed\n",
738 netdev_name(card->dev));
742 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
746 QETH_CARD_TEXT(card, 3, "strtvlan");
748 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
749 dev_info(&card->gdev->dev,
750 "VLAN not supported on %s\n", netdev_name(card->dev));
754 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
755 IPA_CMD_ASS_START, NULL);
757 dev_warn(&card->gdev->dev,
758 "Starting VLAN support for %s failed\n",
759 netdev_name(card->dev));
761 dev_info(&card->gdev->dev, "VLAN enabled\n");
766 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
770 QETH_CARD_TEXT(card, 3, "stmcast");
772 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
773 dev_info(&card->gdev->dev,
774 "Multicast not supported on %s\n",
775 netdev_name(card->dev));
779 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
780 IPA_CMD_ASS_START, NULL);
782 dev_warn(&card->gdev->dev,
783 "Starting multicast support for %s failed\n",
784 netdev_name(card->dev));
786 dev_info(&card->gdev->dev, "Multicast enabled\n");
787 card->dev->flags |= IFF_MULTICAST;
792 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
797 QETH_CARD_TEXT(card, 3, "softipv6");
802 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
805 dev_err(&card->gdev->dev,
806 "Activating IPv6 support for %s failed\n",
807 netdev_name(card->dev));
810 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
813 dev_err(&card->gdev->dev,
814 "Activating IPv6 support for %s failed\n",
815 netdev_name(card->dev));
818 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
819 IPA_CMD_ASS_START, NULL);
821 dev_warn(&card->gdev->dev,
822 "Enabling the passthrough mode for %s failed\n",
823 netdev_name(card->dev));
827 dev_info(&card->gdev->dev, "IPV6 enabled\n");
831 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
833 QETH_CARD_TEXT(card, 3, "strtipv6");
835 if (!qeth_is_supported(card, IPA_IPV6)) {
836 dev_info(&card->gdev->dev,
837 "IPv6 not supported on %s\n", netdev_name(card->dev));
840 return qeth_l3_softsetup_ipv6(card);
843 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
848 QETH_CARD_TEXT(card, 3, "stbrdcst");
849 card->info.broadcast_capable = 0;
850 if (!qeth_is_supported(card, IPA_FILTERING)) {
851 dev_info(&card->gdev->dev,
852 "Broadcast not supported on %s\n",
853 netdev_name(card->dev));
857 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
858 IPA_CMD_ASS_START, NULL);
860 dev_warn(&card->gdev->dev,
861 "Enabling broadcast filtering for %s failed\n",
862 netdev_name(card->dev));
866 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
867 IPA_CMD_ASS_CONFIGURE, &filter_data);
869 dev_warn(&card->gdev->dev,
870 "Setting up broadcast filtering for %s failed\n",
871 netdev_name(card->dev));
874 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
875 dev_info(&card->gdev->dev, "Broadcast enabled\n");
876 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
877 IPA_CMD_ASS_ENABLE, &filter_data);
879 dev_warn(&card->gdev->dev,
880 "Setting up broadcast echo filtering for %s failed\n",
881 netdev_name(card->dev));
884 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
886 if (card->info.broadcast_capable)
887 card->dev->flags |= IFF_BROADCAST;
889 card->dev->flags &= ~IFF_BROADCAST;
893 static void qeth_l3_start_ipassists(struct qeth_card *card)
895 QETH_CARD_TEXT(card, 3, "strtipas");
897 qeth_l3_start_ipa_arp_processing(card); /* go on*/
898 qeth_l3_start_ipa_source_mac(card); /* go on*/
899 qeth_l3_start_ipa_vlan(card); /* go on*/
900 qeth_l3_start_ipa_multicast(card); /* go on*/
901 qeth_l3_start_ipa_ipv6(card); /* go on*/
902 qeth_l3_start_ipa_broadcast(card); /* go on*/
905 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
906 struct qeth_reply *reply, unsigned long data)
908 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
910 if (cmd->hdr.return_code)
912 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
913 return -EADDRNOTAVAIL;
915 ether_addr_copy(card->dev->dev_addr,
916 cmd->data.create_destroy_addr.mac_addr);
920 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
923 struct qeth_cmd_buffer *iob;
925 QETH_CARD_TEXT(card, 2, "hsrmac");
927 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
928 IPA_DATA_SIZEOF(create_destroy_addr));
932 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
937 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
938 struct qeth_reply *reply, unsigned long data)
940 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
941 u16 *uid = reply->param;
943 if (cmd->hdr.return_code == 0) {
944 *uid = cmd->data.create_destroy_addr.uid;
948 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
952 static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid)
954 struct qeth_cmd_buffer *iob;
956 QETH_CARD_TEXT(card, 2, "guniqeid");
958 if (!qeth_is_supported(card, IPA_IPV6))
961 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
962 IPA_DATA_SIZEOF(create_destroy_addr));
966 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid;
967 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid);
974 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
977 struct qeth_ipa_cmd *cmd;
980 QETH_CARD_TEXT(card, 2, "diastrcb");
982 cmd = (struct qeth_ipa_cmd *)data;
983 rc = cmd->hdr.return_code;
985 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
986 switch (cmd->data.diagass.action) {
987 case QETH_DIAGS_CMD_TRACE_QUERY:
989 case QETH_DIAGS_CMD_TRACE_DISABLE:
992 case IPA_RC_INVALID_SUBCMD:
993 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
994 dev_info(&card->gdev->dev, "The HiperSockets network "
995 "traffic analyzer is deactivated\n");
1001 case QETH_DIAGS_CMD_TRACE_ENABLE:
1004 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1005 dev_info(&card->gdev->dev, "The HiperSockets network "
1006 "traffic analyzer is activated\n");
1008 case IPA_RC_HARDWARE_AUTH_ERROR:
1009 dev_warn(&card->gdev->dev, "The device is not "
1010 "authorized to run as a HiperSockets network "
1011 "traffic analyzer\n");
1013 case IPA_RC_TRACE_ALREADY_ACTIVE:
1014 dev_warn(&card->gdev->dev, "A HiperSockets "
1015 "network traffic analyzer is already "
1016 "active in the HiperSockets LAN\n");
1023 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1024 cmd->data.diagass.action, CARD_DEVID(card));
1027 return rc ? -EIO : 0;
1031 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1033 struct qeth_cmd_buffer *iob;
1034 struct qeth_ipa_cmd *cmd;
1036 QETH_CARD_TEXT(card, 2, "diagtrac");
1038 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1041 cmd = __ipa_cmd(iob);
1042 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1043 cmd->data.diagass.action = diags_cmd;
1044 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1047 static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
1049 struct qeth_card *card = arg;
1050 struct inet6_dev *in6_dev;
1051 struct in_device *in4_dev;
1052 struct qeth_ipaddr *ipm;
1053 struct qeth_ipaddr tmp;
1054 struct ip_mc_list *im4;
1055 struct ifmcaddr6 *im6;
1057 QETH_CARD_TEXT(card, 4, "addmc");
1059 if (!dev || !(dev->flags & IFF_UP))
1062 in4_dev = __in_dev_get_rtnl(dev);
1066 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
1067 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1068 tmp.is_multicast = 1;
1070 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
1071 im4 = rtnl_dereference(im4->next_rcu)) {
1072 tmp.u.a4.addr = im4->multiaddr;
1074 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1076 /* for mcast, by-IP match means full match */
1077 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1081 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
1085 hash_add(card->rx_mode_addrs, &ipm->hnode,
1086 qeth_l3_ipaddr_hash(ipm));
1090 if (!qeth_is_supported(card, IPA_IPV6))
1093 in6_dev = __in6_dev_get(dev);
1097 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
1098 tmp.disp_flag = QETH_DISP_ADDR_ADD;
1099 tmp.is_multicast = 1;
1101 for (im6 = rtnl_dereference(in6_dev->mc_list);
1103 im6 = rtnl_dereference(im6->next)) {
1104 tmp.u.a6.addr = im6->mca_addr;
1106 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1108 /* for mcast, by-IP match means full match */
1109 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1113 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
1117 hash_add(card->rx_mode_addrs, &ipm->hnode,
1118 qeth_l3_ipaddr_hash(ipm));
1126 static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1128 bool enable = card->dev->flags & IFF_PROMISC;
1130 if (card->info.promisc_mode == enable)
1133 if (IS_VM_NIC(card)) { /* Guestlan trace */
1134 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1135 qeth_setadp_promisc_mode(card, enable);
1136 } else if (card->options.sniffer && /* HiperSockets trace */
1137 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1139 QETH_CARD_TEXT(card, 3, "+promisc");
1140 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1142 QETH_CARD_TEXT(card, 3, "-promisc");
1143 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1148 static void qeth_l3_rx_mode_work(struct work_struct *work)
1150 struct qeth_card *card = container_of(work, struct qeth_card,
1152 struct qeth_ipaddr *addr;
1153 struct hlist_node *tmp;
1156 QETH_CARD_TEXT(card, 3, "setmulti");
1158 if (!card->options.sniffer) {
1160 qeth_l3_add_mcast_rtnl(card->dev, 0, card);
1161 if (qeth_is_supported(card, IPA_FULL_VLAN))
1162 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
1165 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
1166 switch (addr->disp_flag) {
1167 case QETH_DISP_ADDR_DELETE:
1168 rc = qeth_l3_deregister_addr_entry(card, addr);
1169 if (!rc || rc == -ENOENT) {
1170 hash_del(&addr->hnode);
1174 case QETH_DISP_ADDR_ADD:
1175 rc = qeth_l3_register_addr_entry(card, addr);
1176 if (rc && rc != -ENETDOWN) {
1177 hash_del(&addr->hnode);
1183 /* for next call to set_rx_mode(): */
1184 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1189 qeth_l3_set_promisc_mode(card);
1192 static int qeth_l3_arp_makerc(u16 rc)
1195 case IPA_RC_SUCCESS:
1197 case QETH_IPA_ARP_RC_NOTSUPP:
1198 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1200 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1202 case QETH_IPA_ARP_RC_Q_NO_DATA:
1209 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1212 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1214 qeth_setassparms_cb(card, reply, data);
1215 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1218 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1220 struct qeth_cmd_buffer *iob;
1223 QETH_CARD_TEXT(card, 3, "arpstnoe");
1226 * currently GuestLAN only supports the ARP assist function
1227 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1228 * thus we say EOPNOTSUPP for this ARP function
1230 if (IS_VM_NIC(card))
1232 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1236 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1237 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1238 SETASS_DATA_SIZEOF(flags_32bit),
1243 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1244 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1246 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1247 CARD_DEVID(card), rc);
1251 static __u32 get_arp_entry_size(struct qeth_card *card,
1252 struct qeth_arp_query_data *qdata,
1253 struct qeth_arp_entrytype *type, __u8 strip_entries)
1258 is_hsi = qdata->reply_bits == 5;
1259 if (type->ip == QETHARP_IP_ADDR_V4) {
1260 QETH_CARD_TEXT(card, 4, "arpev4");
1261 if (strip_entries) {
1262 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1263 sizeof(struct qeth_arp_qi_entry7_short);
1265 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1266 sizeof(struct qeth_arp_qi_entry7);
1268 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1269 QETH_CARD_TEXT(card, 4, "arpev6");
1270 if (strip_entries) {
1272 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1273 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1276 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1277 sizeof(struct qeth_arp_qi_entry7_ipv6);
1280 QETH_CARD_TEXT(card, 4, "arpinv");
1287 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1289 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1290 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1293 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1294 struct qeth_reply *reply, unsigned long data)
1296 struct qeth_ipa_cmd *cmd;
1297 struct qeth_arp_query_data *qdata;
1298 struct qeth_arp_query_info *qinfo;
1300 int entrybytes_done;
1302 __u8 do_strip_entries;
1304 QETH_CARD_TEXT(card, 3, "arpquecb");
1306 qinfo = (struct qeth_arp_query_info *) reply->param;
1307 cmd = (struct qeth_ipa_cmd *) data;
1308 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1309 if (cmd->hdr.return_code) {
1310 QETH_CARD_TEXT(card, 4, "arpcberr");
1311 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1312 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1314 if (cmd->data.setassparms.hdr.return_code) {
1315 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1316 QETH_CARD_TEXT(card, 4, "setaperr");
1317 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1318 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1320 qdata = &cmd->data.setassparms.data.query_arp;
1321 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1323 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1324 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1325 entrybytes_done = 0;
1326 for (e = 0; e < qdata->no_entries; ++e) {
1329 struct qeth_arp_entrytype *etype;
1331 cur_entry = &qdata->data + entrybytes_done;
1332 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1333 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1334 QETH_CARD_TEXT(card, 4, "pmis");
1335 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1338 esize = get_arp_entry_size(card, qdata, etype,
1340 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1344 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1345 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1346 memset(qinfo->udata, 0, 4);
1350 memcpy(qinfo->udata + qinfo->udata_offset,
1351 &qdata->data + entrybytes_done + stripped_bytes,
1353 entrybytes_done += esize + stripped_bytes;
1354 qinfo->udata_offset += esize;
1355 ++qinfo->no_entries;
1357 /* check if all replies received ... */
1358 if (cmd->data.setassparms.hdr.seq_no <
1359 cmd->data.setassparms.hdr.number_of_replies)
1361 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1362 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1363 /* keep STRIP_ENTRIES flag so the user program can distinguish
1364 * stripped entries from normal ones */
1365 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1366 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1367 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1368 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1372 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1373 enum qeth_prot_versions prot,
1374 struct qeth_arp_query_info *qinfo)
1376 struct qeth_cmd_buffer *iob;
1377 struct qeth_ipa_cmd *cmd;
1380 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1382 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1383 IPA_CMD_ASS_ARP_QUERY_INFO,
1384 SETASS_DATA_SIZEOF(query_arp), prot);
1387 cmd = __ipa_cmd(iob);
1388 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1389 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1391 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1392 CARD_DEVID(card), rc);
1396 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1398 struct qeth_arp_query_info qinfo = {0, };
1401 QETH_CARD_TEXT(card, 3, "arpquery");
1403 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1404 IPA_ARP_PROCESSING)) {
1405 QETH_CARD_TEXT(card, 3, "arpqnsup");
1409 /* get size of userspace buffer and mask_bits -> 6 bytes */
1410 if (copy_from_user(&qinfo, udata, 6)) {
1414 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1419 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1420 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1422 if (copy_to_user(udata, qinfo.udata, 4))
1426 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1427 /* fails in case of GuestLAN QDIO mode */
1428 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1430 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1431 QETH_CARD_TEXT(card, 4, "qactf");
1435 QETH_CARD_TEXT(card, 4, "qacts");
1443 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1444 struct qeth_arp_cache_entry *entry,
1445 enum qeth_arp_process_subcmds arp_cmd)
1447 struct qeth_arp_cache_entry *cmd_entry;
1448 struct qeth_cmd_buffer *iob;
1451 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1452 QETH_CARD_TEXT(card, 3, "arpadd");
1454 QETH_CARD_TEXT(card, 3, "arpdel");
1457 * currently GuestLAN only supports the ARP assist function
1458 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1459 * thus we say EOPNOTSUPP for this ARP function
1461 if (IS_VM_NIC(card))
1463 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1467 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1468 SETASS_DATA_SIZEOF(arp_entry),
1473 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1474 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1475 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1476 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1478 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1479 arp_cmd, CARD_DEVID(card), rc);
1483 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1485 struct qeth_cmd_buffer *iob;
1488 QETH_CARD_TEXT(card, 3, "arpflush");
1491 * currently GuestLAN only supports the ARP assist function
1492 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1493 * thus we say EOPNOTSUPP for this ARP function
1495 if (IS_VM_NIC(card) || IS_IQD(card))
1497 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1501 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1502 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1507 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1509 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1510 CARD_DEVID(card), rc);
1514 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1516 struct qeth_card *card = dev->ml_priv;
1517 struct qeth_arp_cache_entry arp_entry;
1518 enum qeth_arp_process_subcmds arp_cmd;
1522 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1523 if (!capable(CAP_NET_ADMIN)) {
1527 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1529 case SIOC_QETH_ARP_QUERY_INFO:
1530 if (!capable(CAP_NET_ADMIN)) {
1534 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1536 case SIOC_QETH_ARP_ADD_ENTRY:
1537 case SIOC_QETH_ARP_REMOVE_ENTRY:
1538 if (!capable(CAP_NET_ADMIN))
1540 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1543 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1544 IPA_CMD_ASS_ARP_ADD_ENTRY :
1545 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1546 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1547 case SIOC_QETH_ARP_FLUSH_CACHE:
1548 if (!capable(CAP_NET_ADMIN)) {
1552 rc = qeth_l3_arp_flush_cache(card);
1560 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1563 struct neighbour *n = NULL;
1566 n = dst_neigh_lookup_skb(dst, skb);
1569 int cast_type = n->type;
1572 if ((cast_type == RTN_BROADCAST) ||
1573 (cast_type == RTN_MULTICAST) ||
1574 (cast_type == RTN_ANYCAST))
1579 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1581 case htons(ETH_P_IP):
1582 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1583 return RTN_BROADCAST;
1584 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1585 RTN_MULTICAST : RTN_UNICAST;
1586 case htons(ETH_P_IPV6):
1587 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1588 RTN_MULTICAST : RTN_UNICAST;
1589 case htons(ETH_P_AF_IUCV):
1592 /* OSA only: ... and MAC address */
1593 return qeth_get_ether_cast_type(skb);
1597 static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto)
1599 struct dst_entry *dst;
1603 dst = qeth_dst_check_rcu(skb, proto);
1604 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1610 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1612 if (cast_type == RTN_MULTICAST)
1613 return QETH_CAST_MULTICAST;
1614 if (cast_type == RTN_ANYCAST)
1615 return QETH_CAST_ANYCAST;
1616 if (cast_type == RTN_BROADCAST)
1617 return QETH_CAST_BROADCAST;
1618 return QETH_CAST_UNICAST;
1621 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1622 struct qeth_hdr *hdr, struct sk_buff *skb,
1623 __be16 proto, unsigned int data_len)
1625 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1626 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1627 struct qeth_card *card = queue->card;
1628 struct dst_entry *dst;
1631 hdr->hdr.l3.length = data_len;
1633 if (skb_is_gso(skb)) {
1634 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1636 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1638 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1639 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto);
1640 /* some HW requires combined L3+L4 csum offload: */
1641 if (proto == htons(ETH_P_IP))
1642 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1646 if (proto == htons(ETH_P_IP) || IS_IQD(card)) {
1647 /* NETIF_F_HW_VLAN_CTAG_TX */
1648 if (skb_vlan_tag_present(skb)) {
1649 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1650 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1652 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1653 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1654 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1658 dst = qeth_dst_check_rcu(skb, proto);
1660 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1661 cast_type = RTN_UNICAST;
1663 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
1664 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1667 case htons(ETH_P_IP):
1668 l3_hdr->next_hop.addr.s6_addr32[3] =
1669 qeth_next_hop_v4_rcu(skb, dst);
1671 case htons(ETH_P_IPV6):
1672 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
1674 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1676 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1678 case htons(ETH_P_AF_IUCV):
1679 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
1680 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
1681 iucv_trans_hdr(skb)->destUserID, 8);
1682 l3_hdr->flags |= QETH_HDR_IPV6;
1686 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1691 static void qeth_l3_fixup_headers(struct sk_buff *skb)
1693 struct iphdr *iph = ip_hdr(skb);
1695 /* this is safe, IPv6 traffic takes a different path */
1696 if (skb->ip_summed == CHECKSUM_PARTIAL)
1698 if (skb_is_gso(skb)) {
1700 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1705 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1706 struct qeth_qdio_out_q *queue, __be16 proto)
1708 unsigned int hw_hdr_len;
1711 /* re-use the L2 header area for the HW header: */
1712 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1713 sizeof(struct qeth_hdr);
1714 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1717 skb_pull(skb, ETH_HLEN);
1719 qeth_l3_fixup_headers(skb);
1720 return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1723 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1724 struct net_device *dev)
1726 struct qeth_card *card = dev->ml_priv;
1727 __be16 proto = vlan_get_protocol(skb);
1728 u16 txq = skb_get_queue_mapping(skb);
1729 struct qeth_qdio_out_q *queue;
1732 if (!skb_is_gso(skb))
1733 qdisc_skb_cb(skb)->pkt_len = skb->len;
1735 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1737 if (card->options.sniffer)
1741 case htons(ETH_P_AF_IUCV):
1742 if (card->options.cq != QETH_CQ_ENABLED)
1745 case htons(ETH_P_IP):
1746 case htons(ETH_P_IPV6):
1747 if (card->options.cq == QETH_CQ_ENABLED)
1754 queue = card->qdio.out_qs[txq];
1757 if (!(dev->flags & IFF_BROADCAST) &&
1758 qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST)
1761 if (proto == htons(ETH_P_IP) || IS_IQD(card))
1762 rc = qeth_l3_xmit(card, skb, queue, proto);
1764 rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
1767 return NETDEV_TX_OK;
1770 QETH_TXQ_STAT_INC(queue, tx_dropped);
1772 return NETDEV_TX_OK;
1775 static void qeth_l3_set_rx_mode(struct net_device *dev)
1777 struct qeth_card *card = dev->ml_priv;
1779 schedule_work(&card->rx_mode_work);
1783 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
1784 * NOARP on the netdevice is no option because it also turns off neighbor
1785 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
1786 * arp resolution but we want the hard header (packet socket will work
1789 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1791 n->nud_state = NUD_NOARP;
1792 memcpy(n->ha, "FAKELL", 6);
1793 n->output = n->ops->connected_output;
1798 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1800 if (np->tbl->family == AF_INET)
1801 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1806 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1807 struct net_device *dev,
1808 netdev_features_t features)
1810 if (vlan_get_protocol(skb) != htons(ETH_P_IP))
1811 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1812 return qeth_features_check(skb, dev, features);
1815 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1816 struct net_device *sb_dev)
1818 __be16 proto = vlan_get_protocol(skb);
1820 return qeth_iqd_select_queue(dev, skb,
1821 qeth_l3_get_cast_type(skb, proto), sb_dev);
1824 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
1825 struct net_device *sb_dev)
1827 struct qeth_card *card = dev->ml_priv;
1829 if (qeth_uses_tx_prio_queueing(card))
1830 return qeth_get_priority_queue(card, skb);
1832 return netdev_pick_tx(dev, skb, sb_dev);
1835 static const struct net_device_ops qeth_l3_netdev_ops = {
1836 .ndo_open = qeth_open,
1837 .ndo_stop = qeth_stop,
1838 .ndo_get_stats64 = qeth_get_stats64,
1839 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1840 .ndo_select_queue = qeth_l3_iqd_select_queue,
1841 .ndo_validate_addr = eth_validate_addr,
1842 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1843 .ndo_do_ioctl = qeth_do_ioctl,
1844 .ndo_fix_features = qeth_fix_features,
1845 .ndo_set_features = qeth_set_features,
1846 .ndo_tx_timeout = qeth_tx_timeout,
1849 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
1850 .ndo_open = qeth_open,
1851 .ndo_stop = qeth_stop,
1852 .ndo_get_stats64 = qeth_get_stats64,
1853 .ndo_start_xmit = qeth_l3_hard_start_xmit,
1854 .ndo_features_check = qeth_l3_osa_features_check,
1855 .ndo_select_queue = qeth_l3_osa_select_queue,
1856 .ndo_validate_addr = eth_validate_addr,
1857 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
1858 .ndo_do_ioctl = qeth_do_ioctl,
1859 .ndo_fix_features = qeth_fix_features,
1860 .ndo_set_features = qeth_set_features,
1861 .ndo_tx_timeout = qeth_tx_timeout,
1862 .ndo_neigh_setup = qeth_l3_neigh_setup,
1865 static int qeth_l3_setup_netdev(struct qeth_card *card)
1867 struct net_device *dev = card->dev;
1868 unsigned int headroom;
1871 if (IS_OSD(card) || IS_OSX(card)) {
1872 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
1874 /*IPv6 address autoconfiguration stuff*/
1875 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
1877 if (!IS_VM_NIC(card)) {
1878 card->dev->features |= NETIF_F_SG;
1879 card->dev->hw_features |= NETIF_F_TSO |
1880 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1881 card->dev->vlan_features |= NETIF_F_TSO |
1882 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1885 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1886 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1887 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1889 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1890 card->dev->hw_features |= NETIF_F_TSO6;
1891 card->dev->vlan_features |= NETIF_F_TSO6;
1894 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
1895 if (card->dev->hw_features & NETIF_F_TSO6)
1896 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
1897 else if (card->dev->hw_features & NETIF_F_TSO)
1898 headroom = sizeof(struct qeth_hdr_tso);
1900 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
1901 } else if (IS_IQD(card)) {
1902 card->dev->flags |= IFF_NOARP;
1903 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1904 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
1906 rc = qeth_l3_iqd_read_initial_mac(card);
1912 card->dev->needed_headroom = headroom;
1913 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1914 NETIF_F_HW_VLAN_CTAG_RX;
1916 netif_keep_dst(card->dev);
1917 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
1918 netif_set_gso_max_size(card->dev,
1919 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
1921 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1922 return register_netdev(card->dev);
1925 static const struct device_type qeth_l3_devtype = {
1926 .name = "qeth_layer3",
1927 .groups = qeth_l3_attr_groups,
1930 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
1932 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1935 hash_init(card->ip_htable);
1936 mutex_init(&card->ip_lock);
1937 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
1938 dev_name(&gdev->dev));
1942 if (gdev->dev.type == &qeth_generic_devtype) {
1943 rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups);
1945 destroy_workqueue(card->cmd_wq);
1950 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
1954 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
1956 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1958 if (cgdev->dev.type == &qeth_generic_devtype)
1959 device_remove_groups(&cgdev->dev, qeth_l3_attr_groups);
1961 qeth_set_allowed_threads(card, 0, 1);
1962 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1964 if (cgdev->state == CCWGROUP_ONLINE)
1965 qeth_set_offline(card, card->discipline, false);
1967 cancel_work_sync(&card->close_dev_work);
1968 if (card->dev->reg_state == NETREG_REGISTERED)
1969 unregister_netdev(card->dev);
1971 flush_workqueue(card->cmd_wq);
1972 destroy_workqueue(card->cmd_wq);
1973 qeth_l3_clear_ip_htable(card, 0);
1974 qeth_l3_clear_ipato_list(card);
1977 static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok)
1979 struct net_device *dev = card->dev;
1983 QETH_CARD_TEXT(card, 2, "softsetp");
1985 rc = qeth_l3_setadapter_parms(card);
1987 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
1988 if (!card->options.sniffer) {
1989 qeth_l3_start_ipassists(card);
1991 rc = qeth_l3_setrouting_v4(card);
1993 QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
1994 rc = qeth_l3_setrouting_v6(card);
1996 QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
1999 card->state = CARD_STATE_SOFTSETUP;
2001 qeth_set_allowed_threads(card, 0xffffffff, 0);
2002 qeth_l3_recover_ip(card);
2004 if (dev->reg_state != NETREG_REGISTERED) {
2005 rc = qeth_l3_setup_netdev(card);
2010 netif_carrier_on(dev);
2013 rc = qeth_set_real_num_tx_queues(card,
2014 qeth_tx_actual_queues(card));
2017 goto err_set_queues;
2021 netif_carrier_on(dev);
2023 netif_carrier_off(dev);
2025 netif_device_attach(dev);
2026 qeth_enable_hw_features(dev);
2028 if (card->info.open_when_online) {
2029 card->info.open_when_online = 0;
2030 dev_open(dev, NULL);
2038 qeth_set_allowed_threads(card, 0, 1);
2039 card->state = CARD_STATE_DOWN;
2040 qeth_l3_clear_ip_htable(card, 1);
2044 static void qeth_l3_set_offline(struct qeth_card *card)
2046 qeth_set_allowed_threads(card, 0, 1);
2047 qeth_l3_drain_rx_mode_cache(card);
2049 if (card->options.sniffer &&
2050 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2051 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2053 if (card->state == CARD_STATE_SOFTSETUP) {
2054 card->state = CARD_STATE_DOWN;
2055 qeth_l3_clear_ip_htable(card, 1);
2059 /* Returns zero if the command is successfully "consumed" */
2060 static int qeth_l3_control_event(struct qeth_card *card,
2061 struct qeth_ipa_cmd *cmd)
2066 const struct qeth_discipline qeth_l3_discipline = {
2067 .devtype = &qeth_l3_devtype,
2068 .setup = qeth_l3_probe_device,
2069 .remove = qeth_l3_remove_device,
2070 .set_online = qeth_l3_set_online,
2071 .set_offline = qeth_l3_set_offline,
2072 .do_ioctl = qeth_l3_do_ioctl,
2073 .control_event_handler = qeth_l3_control_event,
2075 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2077 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2078 struct qeth_ipaddr *addr,
2079 unsigned long event)
2083 qeth_l3_modify_ip(card, addr, true);
2086 qeth_l3_modify_ip(card, addr, false);
2093 struct qeth_l3_ip_event_work {
2094 struct work_struct work;
2095 struct qeth_card *card;
2096 struct qeth_ipaddr addr;
2099 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2101 static void qeth_l3_add_ip_worker(struct work_struct *work)
2103 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2105 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2109 static void qeth_l3_delete_ip_worker(struct work_struct *work)
2111 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2113 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2117 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2119 if (is_vlan_dev(dev))
2120 dev = vlan_dev_real_dev(dev);
2121 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2122 dev->netdev_ops == &qeth_l3_netdev_ops)
2123 return (struct qeth_card *) dev->ml_priv;
2127 static int qeth_l3_ip_event(struct notifier_block *this,
2128 unsigned long event, void *ptr)
2130 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2131 struct net_device *dev = ifa->ifa_dev->dev;
2132 struct qeth_ipaddr addr;
2133 struct qeth_card *card;
2135 card = qeth_l3_get_card_from_dev(dev);
2138 QETH_CARD_TEXT(card, 3, "ipevent");
2140 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2141 addr.u.a4.addr = ifa->ifa_address;
2142 addr.u.a4.mask = ifa->ifa_mask;
2144 return qeth_l3_handle_ip_event(card, &addr, event);
2147 static struct notifier_block qeth_l3_ip_notifier = {
2152 static int qeth_l3_ip6_event(struct notifier_block *this,
2153 unsigned long event, void *ptr)
2155 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2156 struct net_device *dev = ifa->idev->dev;
2157 struct qeth_l3_ip_event_work *ip_work;
2158 struct qeth_card *card;
2160 if (event != NETDEV_UP && event != NETDEV_DOWN)
2163 card = qeth_l3_get_card_from_dev(dev);
2166 QETH_CARD_TEXT(card, 3, "ip6event");
2167 if (!qeth_is_supported(card, IPA_IPV6))
2170 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2174 if (event == NETDEV_UP)
2175 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2177 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2179 ip_work->card = card;
2180 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2182 ip_work->addr.u.a6.addr = ifa->addr;
2183 ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2185 queue_work(card->cmd_wq, &ip_work->work);
2189 static struct notifier_block qeth_l3_ip6_notifier = {
2194 static int qeth_l3_register_notifiers(void)
2198 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2199 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2202 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2204 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2210 static void qeth_l3_unregister_notifiers(void)
2212 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2213 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2214 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2217 static int __init qeth_l3_init(void)
2219 pr_info("register layer 3 discipline\n");
2220 return qeth_l3_register_notifiers();
2223 static void __exit qeth_l3_exit(void)
2225 qeth_l3_unregister_notifiers();
2226 pr_info("unregister layer 3 discipline\n");
2229 module_init(qeth_l3_init);
2230 module_exit(qeth_l3_exit);
2231 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2232 MODULE_DESCRIPTION("qeth layer 3 discipline");
2233 MODULE_LICENSE("GPL");