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/ip6_fib.h>
36 #include <net/iucv/af_iucv.h>
37 #include <linux/hashtable.h>
42 static int qeth_l3_set_offline(struct ccwgroup_device *);
43 static int qeth_l3_stop(struct net_device *);
44 static void qeth_l3_set_rx_mode(struct net_device *dev);
45 static int qeth_l3_register_addr_entry(struct qeth_card *,
46 struct qeth_ipaddr *);
47 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
48 struct qeth_ipaddr *);
50 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
52 sprintf(buf, "%pI4", addr);
55 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
57 sprintf(buf, "%pI6", addr);
60 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
63 if (proto == QETH_PROT_IPV4)
64 qeth_l3_ipaddr4_to_string(addr, buf);
65 else if (proto == QETH_PROT_IPV6)
66 qeth_l3_ipaddr6_to_string(addr, buf);
69 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
71 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
74 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
78 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
79 struct qeth_ipaddr *query)
81 u64 key = qeth_l3_ipaddr_hash(query);
82 struct qeth_ipaddr *addr;
84 if (query->is_multicast) {
85 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
86 if (qeth_l3_addr_match_ip(addr, query))
89 hash_for_each_possible(card->ip_htable, addr, hnode, key)
90 if (qeth_l3_addr_match_ip(addr, query))
96 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
101 for (i = 0; i < len; ++i) {
103 for (j = 7; j >= 0; --j) {
104 bits[i*8 + j] = octet & 1;
110 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
111 struct qeth_ipaddr *addr)
113 struct qeth_ipato_entry *ipatoe;
114 u8 addr_bits[128] = {0, };
115 u8 ipatoe_bits[128] = {0, };
118 if (!card->ipato.enabled)
120 if (addr->type != QETH_IP_TYPE_NORMAL)
123 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
124 (addr->proto == QETH_PROT_IPV4)? 4:16);
125 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
126 if (addr->proto != ipatoe->proto)
128 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
129 (ipatoe->proto == QETH_PROT_IPV4) ?
131 if (addr->proto == QETH_PROT_IPV4)
132 rc = !memcmp(addr_bits, ipatoe_bits,
133 min(32, ipatoe->mask_bits));
135 rc = !memcmp(addr_bits, ipatoe_bits,
136 min(128, ipatoe->mask_bits));
141 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
143 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
149 static int qeth_l3_delete_ip(struct qeth_card *card,
150 struct qeth_ipaddr *tmp_addr)
153 struct qeth_ipaddr *addr;
155 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
156 QETH_CARD_TEXT(card, 2, "delrxip");
157 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
158 QETH_CARD_TEXT(card, 2, "delvipa");
160 QETH_CARD_TEXT(card, 2, "delip");
162 if (tmp_addr->proto == QETH_PROT_IPV4)
163 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
165 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
166 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
169 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
170 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
174 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
176 if (addr->in_progress)
179 if (qeth_card_hw_is_reachable(card))
180 rc = qeth_l3_deregister_addr_entry(card, addr);
182 hash_del(&addr->hnode);
188 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
191 struct qeth_ipaddr *addr;
194 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
195 QETH_CARD_TEXT(card, 2, "addrxip");
196 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
197 QETH_CARD_TEXT(card, 2, "addvipa");
199 QETH_CARD_TEXT(card, 2, "addip");
201 if (tmp_addr->proto == QETH_PROT_IPV4)
202 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
204 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
205 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
208 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
210 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
212 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
216 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
218 dev_warn(&card->gdev->dev,
219 "Registering IP address %s failed\n", buf);
222 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
226 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
227 addr->ref_counter = 1;
229 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
230 QETH_CARD_TEXT(card, 2, "tkovaddr");
233 hash_add(card->ip_htable, &addr->hnode,
234 qeth_l3_ipaddr_hash(addr));
236 if (!qeth_card_hw_is_reachable(card)) {
237 addr->disp_flag = QETH_DISP_ADDR_ADD;
241 /* qeth_l3_register_addr_entry can go to sleep
242 * if we add a IPV4 addr. It is caused by the reason
243 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
244 * Thus we should unlock spinlock, and make a protection
245 * using in_progress variable to indicate that there is
246 * an hardware operation with this IPV4 address
248 if (addr->proto == QETH_PROT_IPV4) {
249 addr->in_progress = 1;
250 spin_unlock_bh(&card->ip_lock);
251 rc = qeth_l3_register_addr_entry(card, addr);
252 spin_lock_bh(&card->ip_lock);
253 addr->in_progress = 0;
255 rc = qeth_l3_register_addr_entry(card, addr);
257 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
258 (rc == IPA_RC_LAN_OFFLINE)) {
259 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
260 if (addr->ref_counter < 1) {
261 qeth_l3_deregister_addr_entry(card, addr);
262 hash_del(&addr->hnode);
266 hash_del(&addr->hnode);
273 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
275 struct qeth_ipaddr *addr;
276 struct hlist_node *tmp;
279 QETH_CARD_TEXT(card, 4, "clearip");
281 spin_lock_bh(&card->ip_lock);
283 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
285 hash_del(&addr->hnode);
289 addr->disp_flag = QETH_DISP_ADDR_ADD;
292 spin_unlock_bh(&card->ip_lock);
294 spin_lock_bh(&card->mclock);
296 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
297 hash_del(&addr->hnode);
301 spin_unlock_bh(&card->mclock);
305 static void qeth_l3_recover_ip(struct qeth_card *card)
307 struct qeth_ipaddr *addr;
308 struct hlist_node *tmp;
312 QETH_CARD_TEXT(card, 4, "recovrip");
314 spin_lock_bh(&card->ip_lock);
316 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
317 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
318 if (addr->proto == QETH_PROT_IPV4) {
319 addr->in_progress = 1;
320 spin_unlock_bh(&card->ip_lock);
321 rc = qeth_l3_register_addr_entry(card, addr);
322 spin_lock_bh(&card->ip_lock);
323 addr->in_progress = 0;
325 rc = qeth_l3_register_addr_entry(card, addr);
328 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
329 if (addr->ref_counter < 1)
330 qeth_l3_delete_ip(card, addr);
332 hash_del(&addr->hnode);
338 spin_unlock_bh(&card->ip_lock);
342 static int qeth_l3_send_setdelmc(struct qeth_card *card,
343 struct qeth_ipaddr *addr, int ipacmd)
346 struct qeth_cmd_buffer *iob;
347 struct qeth_ipa_cmd *cmd;
349 QETH_CARD_TEXT(card, 4, "setdelmc");
351 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
354 cmd = __ipa_cmd(iob);
355 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
356 if (addr->proto == QETH_PROT_IPV6)
357 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
358 sizeof(struct in6_addr));
360 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
362 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
367 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
370 for (i = 0; i < 16; i++) {
375 netmask[i] = (u8)(0xFF00 >> j);
381 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
383 switch (addr->type) {
384 case QETH_IP_TYPE_RXIP:
385 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
386 case QETH_IP_TYPE_VIPA:
387 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
388 QETH_IPA_DELIP_VIPA_FLAG;
390 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
394 static int qeth_l3_send_setdelip(struct qeth_card *card,
395 struct qeth_ipaddr *addr,
396 enum qeth_ipa_cmds ipacmd)
398 struct qeth_cmd_buffer *iob;
399 struct qeth_ipa_cmd *cmd;
403 QETH_CARD_TEXT(card, 4, "setdelip");
405 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
408 cmd = __ipa_cmd(iob);
410 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
411 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
413 if (addr->proto == QETH_PROT_IPV6) {
414 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
415 sizeof(struct in6_addr));
416 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
417 memcpy(cmd->data.setdelip6.mask, netmask,
418 sizeof(struct in6_addr));
419 cmd->data.setdelip6.flags = flags;
421 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
422 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
423 cmd->data.setdelip4.flags = flags;
426 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
429 static int qeth_l3_send_setrouting(struct qeth_card *card,
430 enum qeth_routing_types type, enum qeth_prot_versions prot)
433 struct qeth_ipa_cmd *cmd;
434 struct qeth_cmd_buffer *iob;
436 QETH_CARD_TEXT(card, 4, "setroutg");
437 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
440 cmd = __ipa_cmd(iob);
441 cmd->data.setrtg.type = (type);
442 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
447 static int qeth_l3_correct_routing_type(struct qeth_card *card,
448 enum qeth_routing_types *type, enum qeth_prot_versions prot)
450 if (card->info.type == QETH_CARD_TYPE_IQD) {
453 case PRIMARY_CONNECTOR:
454 case SECONDARY_CONNECTOR:
455 case MULTICAST_ROUTER:
464 case SECONDARY_ROUTER:
466 case MULTICAST_ROUTER:
467 if (qeth_is_ipafunc_supported(card, prot,
479 int qeth_l3_setrouting_v4(struct qeth_card *card)
483 QETH_CARD_TEXT(card, 3, "setrtg4");
485 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
490 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
493 card->options.route4.type = NO_ROUTER;
494 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
495 rc, CARD_DEVID(card));
500 int qeth_l3_setrouting_v6(struct qeth_card *card)
504 QETH_CARD_TEXT(card, 3, "setrtg6");
506 if (!qeth_is_supported(card, IPA_IPV6))
508 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
513 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
516 card->options.route6.type = NO_ROUTER;
517 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
518 rc, CARD_DEVID(card));
524 * IP address takeover related functions
528 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
530 * Caller must hold ip_lock.
532 void qeth_l3_update_ipato(struct qeth_card *card)
534 struct qeth_ipaddr *addr;
537 hash_for_each(card->ip_htable, i, addr, hnode) {
538 if (addr->type != QETH_IP_TYPE_NORMAL)
540 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
544 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
546 struct qeth_ipato_entry *ipatoe, *tmp;
548 spin_lock_bh(&card->ip_lock);
550 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
551 list_del(&ipatoe->entry);
555 qeth_l3_update_ipato(card);
556 spin_unlock_bh(&card->ip_lock);
559 int qeth_l3_add_ipato_entry(struct qeth_card *card,
560 struct qeth_ipato_entry *new)
562 struct qeth_ipato_entry *ipatoe;
565 QETH_CARD_TEXT(card, 2, "addipato");
567 spin_lock_bh(&card->ip_lock);
569 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
570 if (ipatoe->proto != new->proto)
572 if (!memcmp(ipatoe->addr, new->addr,
573 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
574 (ipatoe->mask_bits == new->mask_bits)) {
581 list_add_tail(&new->entry, &card->ipato.entries);
582 qeth_l3_update_ipato(card);
585 spin_unlock_bh(&card->ip_lock);
590 int qeth_l3_del_ipato_entry(struct qeth_card *card,
591 enum qeth_prot_versions proto, u8 *addr,
594 struct qeth_ipato_entry *ipatoe, *tmp;
597 QETH_CARD_TEXT(card, 2, "delipato");
599 spin_lock_bh(&card->ip_lock);
601 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
602 if (ipatoe->proto != proto)
604 if (!memcmp(ipatoe->addr, addr,
605 (proto == QETH_PROT_IPV4)? 4:16) &&
606 (ipatoe->mask_bits == mask_bits)) {
607 list_del(&ipatoe->entry);
608 qeth_l3_update_ipato(card);
614 spin_unlock_bh(&card->ip_lock);
618 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
619 enum qeth_ip_types type,
620 enum qeth_prot_versions proto)
622 struct qeth_ipaddr addr;
625 qeth_l3_init_ipaddr(&addr, type, proto);
626 if (proto == QETH_PROT_IPV4)
627 memcpy(&addr.u.a4.addr, ip, 4);
629 memcpy(&addr.u.a6.addr, ip, 16);
631 spin_lock_bh(&card->ip_lock);
632 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
633 spin_unlock_bh(&card->ip_lock);
637 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
639 struct qeth_ipaddr addr;
642 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
643 addr.u.a6.addr.s6_addr[0] = 0xfe;
644 addr.u.a6.addr.s6_addr[1] = 0x80;
645 for (i = 0; i < 8; i++)
646 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
648 spin_lock_bh(&card->ip_lock);
649 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
650 spin_unlock_bh(&card->ip_lock);
654 static int qeth_l3_register_addr_entry(struct qeth_card *card,
655 struct qeth_ipaddr *addr)
661 if (card->options.sniffer)
664 if (addr->proto == QETH_PROT_IPV4) {
665 QETH_CARD_TEXT(card, 2, "setaddr4");
666 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
667 } else if (addr->proto == QETH_PROT_IPV6) {
668 QETH_CARD_TEXT(card, 2, "setaddr6");
669 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
670 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
672 QETH_CARD_TEXT(card, 2, "setaddr?");
673 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
676 if (addr->is_multicast)
677 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
679 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
681 QETH_CARD_TEXT(card, 2, "failed");
682 } while ((--cnt > 0) && rc);
684 QETH_CARD_TEXT(card, 2, "FAILED");
685 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
686 dev_warn(&card->gdev->dev,
687 "Registering IP address %s failed\n", buf);
692 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
693 struct qeth_ipaddr *addr)
697 if (card->options.sniffer)
700 if (addr->proto == QETH_PROT_IPV4) {
701 QETH_CARD_TEXT(card, 2, "deladdr4");
702 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
703 } else if (addr->proto == QETH_PROT_IPV6) {
704 QETH_CARD_TEXT(card, 2, "deladdr6");
705 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
706 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
708 QETH_CARD_TEXT(card, 2, "deladdr?");
709 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
711 if (addr->is_multicast)
712 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
714 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
716 QETH_CARD_TEXT(card, 2, "failed");
721 static int qeth_l3_setadapter_parms(struct qeth_card *card)
725 QETH_DBF_TEXT(SETUP, 2, "setadprm");
727 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
728 rc = qeth_setadpparms_change_macaddr(card);
730 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
731 " address failed\n");
737 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
741 QETH_CARD_TEXT(card, 3, "ipaarp");
743 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
744 dev_info(&card->gdev->dev,
745 "ARP processing not supported on %s!\n",
746 QETH_CARD_IFNAME(card));
749 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
750 IPA_CMD_ASS_START, 0);
752 dev_warn(&card->gdev->dev,
753 "Starting ARP processing support for %s failed\n",
754 QETH_CARD_IFNAME(card));
759 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
763 QETH_CARD_TEXT(card, 3, "stsrcmac");
765 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
766 dev_info(&card->gdev->dev,
767 "Inbound source MAC-address not supported on %s\n",
768 QETH_CARD_IFNAME(card));
772 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
773 IPA_CMD_ASS_START, 0);
775 dev_warn(&card->gdev->dev,
776 "Starting source MAC-address support for %s failed\n",
777 QETH_CARD_IFNAME(card));
781 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
785 QETH_CARD_TEXT(card, 3, "strtvlan");
787 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
788 dev_info(&card->gdev->dev,
789 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
793 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
794 IPA_CMD_ASS_START, 0);
796 dev_warn(&card->gdev->dev,
797 "Starting VLAN support for %s failed\n",
798 QETH_CARD_IFNAME(card));
800 dev_info(&card->gdev->dev, "VLAN enabled\n");
805 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
809 QETH_CARD_TEXT(card, 3, "stmcast");
811 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
812 dev_info(&card->gdev->dev,
813 "Multicast not supported on %s\n",
814 QETH_CARD_IFNAME(card));
818 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
819 IPA_CMD_ASS_START, 0);
821 dev_warn(&card->gdev->dev,
822 "Starting multicast support for %s failed\n",
823 QETH_CARD_IFNAME(card));
825 dev_info(&card->gdev->dev, "Multicast enabled\n");
826 card->dev->flags |= IFF_MULTICAST;
831 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
835 QETH_CARD_TEXT(card, 3, "softipv6");
837 if (card->info.type == QETH_CARD_TYPE_IQD)
840 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
841 IPA_CMD_ASS_START, 3);
843 dev_err(&card->gdev->dev,
844 "Activating IPv6 support for %s failed\n",
845 QETH_CARD_IFNAME(card));
848 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6,
849 IPA_CMD_ASS_START, 0);
851 dev_err(&card->gdev->dev,
852 "Activating IPv6 support for %s failed\n",
853 QETH_CARD_IFNAME(card));
856 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
857 IPA_CMD_ASS_START, 0);
859 dev_warn(&card->gdev->dev,
860 "Enabling the passthrough mode for %s failed\n",
861 QETH_CARD_IFNAME(card));
865 dev_info(&card->gdev->dev, "IPV6 enabled\n");
869 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
871 QETH_CARD_TEXT(card, 3, "strtipv6");
873 if (!qeth_is_supported(card, IPA_IPV6)) {
874 dev_info(&card->gdev->dev,
875 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
878 return qeth_l3_softsetup_ipv6(card);
881 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
885 QETH_CARD_TEXT(card, 3, "stbrdcst");
886 card->info.broadcast_capable = 0;
887 if (!qeth_is_supported(card, IPA_FILTERING)) {
888 dev_info(&card->gdev->dev,
889 "Broadcast not supported on %s\n",
890 QETH_CARD_IFNAME(card));
894 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
895 IPA_CMD_ASS_START, 0);
897 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
898 "%s failed\n", QETH_CARD_IFNAME(card));
902 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
903 IPA_CMD_ASS_CONFIGURE, 1);
905 dev_warn(&card->gdev->dev,
906 "Setting up broadcast filtering for %s failed\n",
907 QETH_CARD_IFNAME(card));
910 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
911 dev_info(&card->gdev->dev, "Broadcast enabled\n");
912 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
913 IPA_CMD_ASS_ENABLE, 1);
915 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
916 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
919 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
921 if (card->info.broadcast_capable)
922 card->dev->flags |= IFF_BROADCAST;
924 card->dev->flags &= ~IFF_BROADCAST;
928 static int qeth_l3_start_ipassists(struct qeth_card *card)
930 QETH_CARD_TEXT(card, 3, "strtipas");
932 if (qeth_set_access_ctrl_online(card, 0))
934 qeth_l3_start_ipa_arp_processing(card); /* go on*/
935 qeth_l3_start_ipa_source_mac(card); /* go on*/
936 qeth_l3_start_ipa_vlan(card); /* go on*/
937 qeth_l3_start_ipa_multicast(card); /* go on*/
938 qeth_l3_start_ipa_ipv6(card); /* go on*/
939 qeth_l3_start_ipa_broadcast(card); /* go on*/
943 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
944 struct qeth_reply *reply, unsigned long data)
946 struct qeth_ipa_cmd *cmd;
948 cmd = (struct qeth_ipa_cmd *) data;
949 if (cmd->hdr.return_code == 0)
950 ether_addr_copy(card->dev->dev_addr,
951 cmd->data.create_destroy_addr.unique_id);
955 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
958 struct qeth_cmd_buffer *iob;
959 struct qeth_ipa_cmd *cmd;
961 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
963 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
967 cmd = __ipa_cmd(iob);
968 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
969 card->info.unique_id;
971 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
976 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
977 struct qeth_reply *reply, unsigned long data)
979 struct qeth_ipa_cmd *cmd;
981 cmd = (struct qeth_ipa_cmd *) data;
982 if (cmd->hdr.return_code == 0)
983 card->info.unique_id = *((__u16 *)
984 &cmd->data.create_destroy_addr.unique_id[6]);
986 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
987 UNIQUE_ID_NOT_BY_CARD;
988 dev_warn(&card->gdev->dev, "The network adapter failed to "
989 "generate a unique ID\n");
994 static int qeth_l3_get_unique_id(struct qeth_card *card)
997 struct qeth_cmd_buffer *iob;
998 struct qeth_ipa_cmd *cmd;
1000 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1002 if (!qeth_is_supported(card, IPA_IPV6)) {
1003 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1004 UNIQUE_ID_NOT_BY_CARD;
1008 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1012 cmd = __ipa_cmd(iob);
1013 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1014 card->info.unique_id;
1016 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1021 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1024 struct qeth_ipa_cmd *cmd;
1027 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1029 cmd = (struct qeth_ipa_cmd *)data;
1030 rc = cmd->hdr.return_code;
1032 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1033 switch (cmd->data.diagass.action) {
1034 case QETH_DIAGS_CMD_TRACE_QUERY:
1036 case QETH_DIAGS_CMD_TRACE_DISABLE:
1039 case IPA_RC_INVALID_SUBCMD:
1040 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1041 dev_info(&card->gdev->dev, "The HiperSockets network "
1042 "traffic analyzer is deactivated\n");
1048 case QETH_DIAGS_CMD_TRACE_ENABLE:
1051 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1052 dev_info(&card->gdev->dev, "The HiperSockets network "
1053 "traffic analyzer is activated\n");
1055 case IPA_RC_HARDWARE_AUTH_ERROR:
1056 dev_warn(&card->gdev->dev, "The device is not "
1057 "authorized to run as a HiperSockets network "
1058 "traffic analyzer\n");
1060 case IPA_RC_TRACE_ALREADY_ACTIVE:
1061 dev_warn(&card->gdev->dev, "A HiperSockets "
1062 "network traffic analyzer is already "
1063 "active in the HiperSockets LAN\n");
1070 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1071 cmd->data.diagass.action, CARD_DEVID(card));
1078 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1080 struct qeth_cmd_buffer *iob;
1081 struct qeth_ipa_cmd *cmd;
1083 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1085 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1088 cmd = __ipa_cmd(iob);
1089 cmd->data.diagass.subcmd_len = 16;
1090 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1091 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1092 cmd->data.diagass.action = diags_cmd;
1093 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1097 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1099 struct ip_mc_list *im4;
1100 struct qeth_ipaddr *tmp, *ipm;
1102 QETH_CARD_TEXT(card, 4, "addmc");
1104 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1108 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1109 im4 = rcu_dereference(im4->next_rcu)) {
1110 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1111 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1112 tmp->is_multicast = 1;
1114 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1116 /* for mcast, by-IP match means full match */
1117 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1119 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1122 ether_addr_copy(ipm->mac, tmp->mac);
1123 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1124 ipm->is_multicast = 1;
1125 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1126 hash_add(card->ip_mc_htable,
1127 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1134 /* called with rcu_read_lock */
1135 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1137 struct in_device *in_dev;
1140 QETH_CARD_TEXT(card, 4, "addmcvl");
1142 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1145 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1146 struct net_device *netdev;
1148 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1150 if (netdev == NULL ||
1151 !(netdev->flags & IFF_UP))
1153 in_dev = __in_dev_get_rcu(netdev);
1156 qeth_l3_add_mc_to_hash(card, in_dev);
1160 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1162 struct in_device *in4_dev;
1164 QETH_CARD_TEXT(card, 4, "chkmcv4");
1167 in4_dev = __in_dev_get_rcu(card->dev);
1168 if (in4_dev == NULL)
1170 qeth_l3_add_mc_to_hash(card, in4_dev);
1171 qeth_l3_add_vlan_mc(card);
1176 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1177 struct inet6_dev *in6_dev)
1179 struct qeth_ipaddr *ipm;
1180 struct ifmcaddr6 *im6;
1181 struct qeth_ipaddr *tmp;
1183 QETH_CARD_TEXT(card, 4, "addmc6");
1185 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1189 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1190 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1191 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1192 sizeof(struct in6_addr));
1193 tmp->is_multicast = 1;
1195 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1197 /* for mcast, by-IP match means full match */
1198 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1202 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1206 ether_addr_copy(ipm->mac, tmp->mac);
1207 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1208 sizeof(struct in6_addr));
1209 ipm->is_multicast = 1;
1210 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1211 hash_add(card->ip_mc_htable,
1212 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1218 /* called with rcu_read_lock */
1219 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1221 struct inet6_dev *in_dev;
1224 QETH_CARD_TEXT(card, 4, "admc6vl");
1226 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1229 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1230 struct net_device *netdev;
1232 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1234 if (netdev == NULL ||
1235 !(netdev->flags & IFF_UP))
1237 in_dev = in6_dev_get(netdev);
1240 read_lock_bh(&in_dev->lock);
1241 qeth_l3_add_mc6_to_hash(card, in_dev);
1242 read_unlock_bh(&in_dev->lock);
1243 in6_dev_put(in_dev);
1247 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1249 struct inet6_dev *in6_dev;
1251 QETH_CARD_TEXT(card, 4, "chkmcv6");
1253 if (!qeth_is_supported(card, IPA_IPV6))
1255 in6_dev = in6_dev_get(card->dev);
1260 read_lock_bh(&in6_dev->lock);
1261 qeth_l3_add_mc6_to_hash(card, in6_dev);
1262 qeth_l3_add_vlan_mc6(card);
1263 read_unlock_bh(&in6_dev->lock);
1265 in6_dev_put(in6_dev);
1268 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1269 __be16 proto, u16 vid)
1271 struct qeth_card *card = dev->ml_priv;
1273 set_bit(vid, card->active_vlans);
1277 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1278 __be16 proto, u16 vid)
1280 struct qeth_card *card = dev->ml_priv;
1282 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1284 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1285 QETH_CARD_TEXT(card, 3, "kidREC");
1288 clear_bit(vid, card->active_vlans);
1289 qeth_l3_set_rx_mode(dev);
1293 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1294 struct qeth_hdr *hdr)
1296 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1297 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1299 unsigned char tg_addr[ETH_ALEN];
1301 skb_reset_network_header(skb);
1302 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1303 case QETH_CAST_MULTICAST:
1304 if (prot == ETH_P_IP)
1305 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1307 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1309 card->stats.multicast++;
1311 case QETH_CAST_BROADCAST:
1312 ether_addr_copy(tg_addr, card->dev->broadcast);
1313 card->stats.multicast++;
1316 if (card->options.sniffer)
1317 skb->pkt_type = PACKET_OTHERHOST;
1318 ether_addr_copy(tg_addr, card->dev->dev_addr);
1321 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1322 card->dev->header_ops->create(skb, card->dev, prot,
1323 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1326 card->dev->header_ops->create(skb, card->dev, prot,
1327 tg_addr, "FAKELL", skb->len);
1330 skb->protocol = eth_type_trans(skb, card->dev);
1332 /* copy VLAN tag from hdr into skb */
1333 if (!card->options.sniffer &&
1334 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1335 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1336 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1337 hdr->hdr.l3.vlan_id :
1338 hdr->hdr.l3.next_hop.rx.vlan_id;
1339 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1342 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1345 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1346 int budget, int *done)
1348 struct net_device *dev = card->dev;
1350 struct sk_buff *skb;
1351 struct qeth_hdr *hdr;
1356 WARN_ON_ONCE(!budget);
1358 skb = qeth_core_get_next_skb(card,
1359 &card->qdio.in_q->bufs[card->rx.b_index],
1360 &card->rx.b_element, &card->rx.e_offset, &hdr);
1365 switch (hdr->hdr.l3.id) {
1366 case QETH_HEADER_TYPE_LAYER3:
1367 magic = *(__u16 *)skb->data;
1368 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1369 (magic == ETH_P_AF_IUCV)) {
1371 dev_hard_header(skb, dev, ETH_P_AF_IUCV,
1372 dev->dev_addr, "FAKELL", len);
1373 skb->protocol = eth_type_trans(skb, dev);
1374 netif_receive_skb(skb);
1376 qeth_l3_rebuild_skb(card, skb, hdr);
1378 napi_gro_receive(&card->napi, skb);
1381 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1382 skb->protocol = eth_type_trans(skb, skb->dev);
1384 netif_receive_skb(skb);
1387 dev_kfree_skb_any(skb);
1388 QETH_CARD_TEXT(card, 3, "inbunkno");
1389 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1394 card->stats.rx_packets++;
1395 card->stats.rx_bytes += len;
1400 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1402 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1403 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1405 qeth_set_allowed_threads(card, 0, 1);
1406 if (card->options.sniffer &&
1407 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1408 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1409 if (card->read.state == CH_STATE_UP &&
1410 card->write.state == CH_STATE_UP &&
1411 (card->state == CARD_STATE_UP)) {
1413 qeth_l3_stop(card->dev);
1416 dev_close(card->dev);
1419 card->state = CARD_STATE_SOFTSETUP;
1421 if (card->state == CARD_STATE_SOFTSETUP) {
1422 qeth_l3_clear_ip_htable(card, 1);
1423 qeth_clear_ipacmd_list(card);
1424 card->state = CARD_STATE_HARDSETUP;
1426 if (card->state == CARD_STATE_HARDSETUP) {
1427 qeth_qdio_clear_card(card, 0);
1428 qeth_clear_qdio_buffers(card);
1429 qeth_clear_working_pool_list(card);
1430 card->state = CARD_STATE_DOWN;
1432 if (card->state == CARD_STATE_DOWN) {
1433 qeth_clear_cmd_buffers(&card->read);
1434 qeth_clear_cmd_buffers(&card->write);
1439 * test for and Switch promiscuous mode (on or off)
1440 * either for guestlan or HiperSocket Sniffer
1443 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1445 struct net_device *dev = card->dev;
1447 if (((dev->flags & IFF_PROMISC) &&
1448 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1449 (!(dev->flags & IFF_PROMISC) &&
1450 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1453 if (card->info.guestlan) { /* Guestlan trace */
1454 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1455 qeth_setadp_promisc_mode(card);
1456 } else if (card->options.sniffer && /* HiperSockets trace */
1457 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1458 if (dev->flags & IFF_PROMISC) {
1459 QETH_CARD_TEXT(card, 3, "+promisc");
1460 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1462 QETH_CARD_TEXT(card, 3, "-promisc");
1463 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1468 static void qeth_l3_set_rx_mode(struct net_device *dev)
1470 struct qeth_card *card = dev->ml_priv;
1471 struct qeth_ipaddr *addr;
1472 struct hlist_node *tmp;
1475 QETH_CARD_TEXT(card, 3, "setmulti");
1476 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1477 (card->state != CARD_STATE_UP))
1479 if (!card->options.sniffer) {
1480 spin_lock_bh(&card->mclock);
1482 qeth_l3_add_multicast_ipv4(card);
1483 qeth_l3_add_multicast_ipv6(card);
1485 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1486 switch (addr->disp_flag) {
1487 case QETH_DISP_ADDR_DELETE:
1488 rc = qeth_l3_deregister_addr_entry(card, addr);
1489 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) {
1490 hash_del(&addr->hnode);
1494 case QETH_DISP_ADDR_ADD:
1495 rc = qeth_l3_register_addr_entry(card, addr);
1496 if (rc && rc != IPA_RC_LAN_OFFLINE) {
1497 hash_del(&addr->hnode);
1501 addr->ref_counter = 1;
1504 /* for next call to set_rx_mode(): */
1505 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1509 spin_unlock_bh(&card->mclock);
1511 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1514 qeth_l3_handle_promisc_mode(card);
1517 static int qeth_l3_arp_makerc(int rc)
1520 case IPA_RC_SUCCESS:
1522 case QETH_IPA_ARP_RC_NOTSUPP:
1523 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1525 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1527 case QETH_IPA_ARP_RC_Q_NO_DATA:
1534 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1538 QETH_CARD_TEXT(card, 3, "arpstnoe");
1541 * currently GuestLAN only supports the ARP assist function
1542 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1543 * thus we say EOPNOTSUPP for this ARP function
1545 if (card->info.guestlan)
1547 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1550 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1551 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1554 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1555 CARD_DEVID(card), rc);
1556 return qeth_l3_arp_makerc(rc);
1559 static __u32 get_arp_entry_size(struct qeth_card *card,
1560 struct qeth_arp_query_data *qdata,
1561 struct qeth_arp_entrytype *type, __u8 strip_entries)
1566 is_hsi = qdata->reply_bits == 5;
1567 if (type->ip == QETHARP_IP_ADDR_V4) {
1568 QETH_CARD_TEXT(card, 4, "arpev4");
1569 if (strip_entries) {
1570 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1571 sizeof(struct qeth_arp_qi_entry7_short);
1573 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1574 sizeof(struct qeth_arp_qi_entry7);
1576 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1577 QETH_CARD_TEXT(card, 4, "arpev6");
1578 if (strip_entries) {
1580 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1581 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1584 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1585 sizeof(struct qeth_arp_qi_entry7_ipv6);
1588 QETH_CARD_TEXT(card, 4, "arpinv");
1595 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1597 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1598 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1601 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1602 struct qeth_reply *reply, unsigned long data)
1604 struct qeth_ipa_cmd *cmd;
1605 struct qeth_arp_query_data *qdata;
1606 struct qeth_arp_query_info *qinfo;
1609 int entrybytes_done;
1611 __u8 do_strip_entries;
1613 QETH_CARD_TEXT(card, 3, "arpquecb");
1615 qinfo = (struct qeth_arp_query_info *) reply->param;
1616 cmd = (struct qeth_ipa_cmd *) data;
1617 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1618 if (cmd->hdr.return_code) {
1619 QETH_CARD_TEXT(card, 4, "arpcberr");
1620 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1623 if (cmd->data.setassparms.hdr.return_code) {
1624 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1625 QETH_CARD_TEXT(card, 4, "setaperr");
1626 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1629 qdata = &cmd->data.setassparms.data.query_arp;
1630 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1632 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1633 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1634 entrybytes_done = 0;
1635 for (e = 0; e < qdata->no_entries; ++e) {
1638 struct qeth_arp_entrytype *etype;
1640 cur_entry = &qdata->data + entrybytes_done;
1641 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1642 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1643 QETH_CARD_TEXT(card, 4, "pmis");
1644 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1647 esize = get_arp_entry_size(card, qdata, etype,
1649 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1653 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1654 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
1655 cmd->hdr.return_code = IPA_RC_ENOMEM;
1659 memcpy(qinfo->udata + qinfo->udata_offset,
1660 &qdata->data + entrybytes_done + stripped_bytes,
1662 entrybytes_done += esize + stripped_bytes;
1663 qinfo->udata_offset += esize;
1664 ++qinfo->no_entries;
1666 /* check if all replies received ... */
1667 if (cmd->data.setassparms.hdr.seq_no <
1668 cmd->data.setassparms.hdr.number_of_replies)
1670 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1671 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1672 /* keep STRIP_ENTRIES flag so the user program can distinguish
1673 * stripped entries from normal ones */
1674 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1675 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1676 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1677 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1681 memcpy(qinfo->udata, &i, 4);
1685 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1686 enum qeth_prot_versions prot,
1687 struct qeth_arp_query_info *qinfo)
1689 struct qeth_cmd_buffer *iob;
1690 struct qeth_ipa_cmd *cmd;
1693 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1695 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1696 IPA_CMD_ASS_ARP_QUERY_INFO,
1697 sizeof(struct qeth_arp_query_data)
1702 cmd = __ipa_cmd(iob);
1703 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1704 rc = qeth_send_control_data(card,
1705 QETH_SETASS_BASE_LEN + QETH_ARP_CMD_LEN,
1706 iob, qeth_l3_arp_query_cb, qinfo);
1708 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1709 CARD_DEVID(card), rc);
1710 return qeth_l3_arp_makerc(rc);
1713 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1715 struct qeth_arp_query_info qinfo = {0, };
1718 QETH_CARD_TEXT(card, 3, "arpquery");
1720 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1721 IPA_ARP_PROCESSING)) {
1722 QETH_CARD_TEXT(card, 3, "arpqnsup");
1726 /* get size of userspace buffer and mask_bits -> 6 bytes */
1727 if (copy_from_user(&qinfo, udata, 6)) {
1731 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1736 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1737 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1739 if (copy_to_user(udata, qinfo.udata, 4))
1743 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1744 /* fails in case of GuestLAN QDIO mode */
1745 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1747 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1748 QETH_CARD_TEXT(card, 4, "qactf");
1752 QETH_CARD_TEXT(card, 4, "qacts");
1760 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1761 struct qeth_arp_cache_entry *entry,
1762 enum qeth_arp_process_subcmds arp_cmd)
1764 struct qeth_arp_cache_entry *cmd_entry;
1765 struct qeth_cmd_buffer *iob;
1768 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1769 QETH_CARD_TEXT(card, 3, "arpadd");
1771 QETH_CARD_TEXT(card, 3, "arpdel");
1774 * currently GuestLAN only supports the ARP assist function
1775 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1776 * thus we say EOPNOTSUPP for this ARP function
1778 if (card->info.guestlan)
1780 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1784 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1785 sizeof(*cmd_entry), QETH_PROT_IPV4);
1789 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1790 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1791 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1792 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
1794 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1795 arp_cmd, CARD_DEVID(card), rc);
1797 return qeth_l3_arp_makerc(rc);
1800 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1804 QETH_CARD_TEXT(card, 3, "arpflush");
1807 * currently GuestLAN only supports the ARP assist function
1808 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1809 * thus we say EOPNOTSUPP for this ARP function
1811 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
1813 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1816 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1817 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
1819 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1820 CARD_DEVID(card), rc);
1821 return qeth_l3_arp_makerc(rc);
1824 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1826 struct qeth_card *card = dev->ml_priv;
1827 struct qeth_arp_cache_entry arp_entry;
1828 enum qeth_arp_process_subcmds arp_cmd;
1832 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1833 if (!capable(CAP_NET_ADMIN)) {
1837 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1839 case SIOC_QETH_ARP_QUERY_INFO:
1840 if (!capable(CAP_NET_ADMIN)) {
1844 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1846 case SIOC_QETH_ARP_ADD_ENTRY:
1847 case SIOC_QETH_ARP_REMOVE_ENTRY:
1848 if (!capable(CAP_NET_ADMIN))
1850 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1853 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1854 IPA_CMD_ASS_ARP_ADD_ENTRY :
1855 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1856 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1857 case SIOC_QETH_ARP_FLUSH_CACHE:
1858 if (!capable(CAP_NET_ADMIN)) {
1862 rc = qeth_l3_arp_flush_cache(card);
1870 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1872 struct neighbour *n = NULL;
1873 struct dst_entry *dst;
1878 n = dst_neigh_lookup_skb(dst, skb);
1880 int cast_type = n->type;
1884 if ((cast_type == RTN_BROADCAST) ||
1885 (cast_type == RTN_MULTICAST) ||
1886 (cast_type == RTN_ANYCAST))
1892 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1893 switch (qeth_get_ip_version(skb)) {
1895 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1896 RTN_MULTICAST : RTN_UNICAST;
1898 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1899 RTN_MULTICAST : RTN_UNICAST;
1901 /* ... and MAC address */
1902 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1903 skb->dev->broadcast))
1904 return RTN_BROADCAST;
1905 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
1906 return RTN_MULTICAST;
1907 /* default to unicast */
1912 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1914 if (cast_type == RTN_MULTICAST)
1915 return QETH_CAST_MULTICAST;
1916 if (cast_type == RTN_ANYCAST)
1917 return QETH_CAST_ANYCAST;
1918 if (cast_type == RTN_BROADCAST)
1919 return QETH_CAST_BROADCAST;
1920 return QETH_CAST_UNICAST;
1923 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
1924 struct sk_buff *skb, int ipv, int cast_type,
1925 unsigned int data_len)
1927 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1928 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1930 hdr->hdr.l3.length = data_len;
1932 if (skb_is_gso(skb)) {
1933 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1935 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1937 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1938 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1939 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1940 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1941 iucv_trans_hdr(skb)->destUserID, 8);
1945 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1946 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1947 /* some HW requires combined L3+L4 csum offload: */
1949 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1950 if (card->options.performance_stats)
1951 card->perf_stats.tx_csum++;
1955 if (ipv == 4 || IS_IQD(card)) {
1956 /* NETIF_F_HW_VLAN_CTAG_TX */
1957 if (skb_vlan_tag_present(skb)) {
1958 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1959 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1961 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1962 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1963 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1968 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
1969 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1970 skb->dev->broadcast))
1971 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
1973 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
1974 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
1978 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
1981 struct rtable *rt = skb_rtable(skb);
1983 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
1984 rt_nexthop(rt, ip_hdr(skb)->daddr) :
1988 const struct rt6_info *rt = skb_rt6_info(skb);
1990 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
1991 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
1993 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
1995 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1996 if (card->info.type != QETH_CARD_TYPE_IQD)
1997 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2002 static void qeth_l3_fixup_headers(struct sk_buff *skb)
2004 struct iphdr *iph = ip_hdr(skb);
2006 /* this is safe, IPv6 traffic takes a different path */
2007 if (skb->ip_summed == CHECKSUM_PARTIAL)
2009 if (skb_is_gso(skb)) {
2011 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
2016 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2017 struct qeth_qdio_out_q *queue, int ipv, int cast_type)
2019 unsigned char eth_hdr[ETH_HLEN];
2020 unsigned int hw_hdr_len;
2023 /* re-use the L2 header area for the HW header: */
2024 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
2025 sizeof(struct qeth_hdr);
2026 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2029 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN);
2030 skb_pull(skb, ETH_HLEN);
2032 qeth_l3_fixup_headers(skb);
2033 rc = qeth_xmit(card, skb, queue, ipv, cast_type, qeth_l3_fill_header);
2035 /* roll back to ETH header */
2036 skb_push(skb, ETH_HLEN);
2037 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
2042 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2043 struct net_device *dev)
2045 int cast_type = qeth_l3_get_cast_type(skb);
2046 struct qeth_card *card = dev->ml_priv;
2047 int ipv = qeth_get_ip_version(skb);
2048 struct qeth_qdio_out_q *queue;
2049 int tx_bytes = skb->len;
2053 if (card->options.sniffer)
2055 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2056 (card->options.cq == QETH_CQ_ENABLED &&
2057 skb->protocol != htons(ETH_P_AF_IUCV)))
2061 if (card->state != CARD_STATE_UP) {
2062 card->stats.tx_carrier_errors++;
2066 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable)
2069 queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
2071 if (card->options.performance_stats) {
2072 card->perf_stats.outbound_cnt++;
2073 card->perf_stats.outbound_start_time = qeth_get_micros();
2075 netif_stop_queue(dev);
2077 if (ipv == 4 || IS_IQD(card))
2078 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type);
2080 rc = qeth_xmit(card, skb, queue, ipv, cast_type,
2081 qeth_l3_fill_header);
2084 card->stats.tx_packets++;
2085 card->stats.tx_bytes += tx_bytes;
2086 if (card->options.performance_stats)
2087 card->perf_stats.outbound_time += qeth_get_micros() -
2088 card->perf_stats.outbound_start_time;
2089 netif_wake_queue(dev);
2090 return NETDEV_TX_OK;
2091 } else if (rc == -EBUSY) {
2092 return NETDEV_TX_BUSY;
2093 } /* else fall through */
2096 card->stats.tx_dropped++;
2097 card->stats.tx_errors++;
2098 dev_kfree_skb_any(skb);
2099 netif_wake_queue(dev);
2100 return NETDEV_TX_OK;
2103 static int __qeth_l3_open(struct net_device *dev)
2105 struct qeth_card *card = dev->ml_priv;
2108 QETH_CARD_TEXT(card, 4, "qethopen");
2109 if (card->state == CARD_STATE_UP)
2111 if (card->state != CARD_STATE_SOFTSETUP)
2113 card->data.state = CH_STATE_UP;
2114 card->state = CARD_STATE_UP;
2115 netif_start_queue(dev);
2117 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2118 napi_enable(&card->napi);
2120 napi_schedule(&card->napi);
2121 /* kick-start the NAPI softirq: */
2128 static int qeth_l3_open(struct net_device *dev)
2130 struct qeth_card *card = dev->ml_priv;
2132 QETH_CARD_TEXT(card, 5, "qethope_");
2133 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2134 QETH_CARD_TEXT(card, 3, "openREC");
2135 return -ERESTARTSYS;
2137 return __qeth_l3_open(dev);
2140 static int qeth_l3_stop(struct net_device *dev)
2142 struct qeth_card *card = dev->ml_priv;
2144 QETH_CARD_TEXT(card, 4, "qethstop");
2145 netif_tx_disable(dev);
2146 if (card->state == CARD_STATE_UP) {
2147 card->state = CARD_STATE_SOFTSETUP;
2148 napi_disable(&card->napi);
2153 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2154 .get_link = ethtool_op_get_link,
2155 .get_strings = qeth_core_get_strings,
2156 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2157 .get_sset_count = qeth_core_get_sset_count,
2158 .get_drvinfo = qeth_core_get_drvinfo,
2159 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2163 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2164 * NOARP on the netdevice is no option because it also turns off neighbor
2165 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2166 * arp resolution but we want the hard header (packet socket will work
2169 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2171 n->nud_state = NUD_NOARP;
2172 memcpy(n->ha, "FAKELL", 6);
2173 n->output = n->ops->connected_output;
2178 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2180 if (np->tbl->family == AF_INET)
2181 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2186 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2187 struct net_device *dev,
2188 netdev_features_t features)
2190 if (qeth_get_ip_version(skb) != 4)
2191 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2192 return qeth_features_check(skb, dev, features);
2195 static const struct net_device_ops qeth_l3_netdev_ops = {
2196 .ndo_open = qeth_l3_open,
2197 .ndo_stop = qeth_l3_stop,
2198 .ndo_get_stats = qeth_get_stats,
2199 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2200 .ndo_validate_addr = eth_validate_addr,
2201 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2202 .ndo_do_ioctl = qeth_do_ioctl,
2203 .ndo_fix_features = qeth_fix_features,
2204 .ndo_set_features = qeth_set_features,
2205 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2206 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2207 .ndo_tx_timeout = qeth_tx_timeout,
2210 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2211 .ndo_open = qeth_l3_open,
2212 .ndo_stop = qeth_l3_stop,
2213 .ndo_get_stats = qeth_get_stats,
2214 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2215 .ndo_features_check = qeth_l3_osa_features_check,
2216 .ndo_validate_addr = eth_validate_addr,
2217 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2218 .ndo_do_ioctl = qeth_do_ioctl,
2219 .ndo_fix_features = qeth_fix_features,
2220 .ndo_set_features = qeth_set_features,
2221 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2222 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2223 .ndo_tx_timeout = qeth_tx_timeout,
2224 .ndo_neigh_setup = qeth_l3_neigh_setup,
2227 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
2229 unsigned int headroom;
2232 if (qeth_netdev_is_registered(card->dev))
2235 if (card->info.type == QETH_CARD_TYPE_OSD ||
2236 card->info.type == QETH_CARD_TYPE_OSX) {
2237 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2238 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2239 pr_info("qeth_l3: ignoring TR device\n");
2243 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2245 /*IPv6 address autoconfiguration stuff*/
2246 qeth_l3_get_unique_id(card);
2247 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2248 card->dev->dev_id = card->info.unique_id & 0xffff;
2250 if (!card->info.guestlan) {
2251 card->dev->features |= NETIF_F_SG;
2252 card->dev->hw_features |= NETIF_F_TSO |
2253 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2254 card->dev->vlan_features |= NETIF_F_TSO |
2255 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2258 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2259 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2260 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2262 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2263 card->dev->hw_features |= NETIF_F_TSO6;
2264 card->dev->vlan_features |= NETIF_F_TSO6;
2267 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2268 if (card->dev->hw_features & NETIF_F_TSO6)
2269 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2270 else if (card->dev->hw_features & NETIF_F_TSO)
2271 headroom = sizeof(struct qeth_hdr_tso);
2273 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2274 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2275 card->dev->flags |= IFF_NOARP;
2276 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2277 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2279 rc = qeth_l3_iqd_read_initial_mac(card);
2285 card->dev->needed_headroom = headroom;
2286 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2287 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2288 NETIF_F_HW_VLAN_CTAG_RX |
2289 NETIF_F_HW_VLAN_CTAG_FILTER;
2291 netif_keep_dst(card->dev);
2292 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2293 netif_set_gso_max_size(card->dev,
2294 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2296 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2297 rc = register_netdev(card->dev);
2298 if (!rc && carrier_ok)
2299 netif_carrier_on(card->dev);
2303 card->dev->netdev_ops = NULL;
2307 static const struct device_type qeth_l3_devtype = {
2308 .name = "qeth_layer3",
2309 .groups = qeth_l3_attr_groups,
2312 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2314 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2317 if (gdev->dev.type == &qeth_generic_devtype) {
2318 rc = qeth_l3_create_device_attributes(&gdev->dev);
2322 hash_init(card->ip_htable);
2323 hash_init(card->ip_mc_htable);
2324 card->info.hwtrap = 0;
2328 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2330 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2332 if (cgdev->dev.type == &qeth_generic_devtype)
2333 qeth_l3_remove_device_attributes(&cgdev->dev);
2335 qeth_set_allowed_threads(card, 0, 1);
2336 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2338 if (cgdev->state == CCWGROUP_ONLINE)
2339 qeth_l3_set_offline(cgdev);
2341 if (qeth_netdev_is_registered(card->dev))
2342 unregister_netdev(card->dev);
2343 qeth_l3_clear_ip_htable(card, 0);
2344 qeth_l3_clear_ipato_list(card);
2347 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2349 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2351 enum qeth_card_states recover_flag;
2354 mutex_lock(&card->discipline_mutex);
2355 mutex_lock(&card->conf_mutex);
2356 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2357 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2359 recover_flag = card->state;
2360 rc = qeth_core_hardsetup_card(card, &carrier_ok);
2362 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2367 rc = qeth_l3_setup_netdev(card, carrier_ok);
2371 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2372 if (card->info.hwtrap &&
2373 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2374 card->info.hwtrap = 0;
2376 card->info.hwtrap = 0;
2378 card->state = CARD_STATE_HARDSETUP;
2379 qeth_print_status_message(card);
2382 QETH_DBF_TEXT(SETUP, 2, "softsetp");
2384 rc = qeth_l3_setadapter_parms(card);
2386 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2387 if (!card->options.sniffer) {
2388 rc = qeth_l3_start_ipassists(card);
2390 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2393 rc = qeth_l3_setrouting_v4(card);
2395 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2396 rc = qeth_l3_setrouting_v6(card);
2398 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2400 netif_tx_disable(card->dev);
2402 rc = qeth_init_qdio_queues(card);
2404 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2408 card->state = CARD_STATE_SOFTSETUP;
2410 qeth_set_allowed_threads(card, 0xffffffff, 0);
2411 qeth_l3_recover_ip(card);
2413 qeth_enable_hw_features(card->dev);
2414 if (recover_flag == CARD_STATE_RECOVER) {
2416 if (recovery_mode) {
2417 __qeth_l3_open(card->dev);
2418 qeth_l3_set_rx_mode(card->dev);
2420 dev_open(card->dev, NULL);
2424 qeth_trace_features(card);
2425 /* let user_space know that device is online */
2426 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2427 mutex_unlock(&card->conf_mutex);
2428 mutex_unlock(&card->discipline_mutex);
2431 qeth_l3_stop_card(card, 0);
2432 ccw_device_set_offline(CARD_DDEV(card));
2433 ccw_device_set_offline(CARD_WDEV(card));
2434 ccw_device_set_offline(CARD_RDEV(card));
2435 qdio_free(CARD_DDEV(card));
2436 if (recover_flag == CARD_STATE_RECOVER)
2437 card->state = CARD_STATE_RECOVER;
2439 card->state = CARD_STATE_DOWN;
2440 mutex_unlock(&card->conf_mutex);
2441 mutex_unlock(&card->discipline_mutex);
2445 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2447 return __qeth_l3_set_online(gdev, 0);
2450 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2453 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2454 int rc = 0, rc2 = 0, rc3 = 0;
2455 enum qeth_card_states recover_flag;
2457 mutex_lock(&card->discipline_mutex);
2458 mutex_lock(&card->conf_mutex);
2459 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2460 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2462 netif_carrier_off(card->dev);
2463 recover_flag = card->state;
2464 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2465 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2466 card->info.hwtrap = 1;
2468 qeth_l3_stop_card(card, recovery_mode);
2469 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
2471 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2474 rc = ccw_device_set_offline(CARD_DDEV(card));
2475 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2476 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2478 rc = (rc2) ? rc2 : rc3;
2480 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2481 qdio_free(CARD_DDEV(card));
2482 if (recover_flag == CARD_STATE_UP)
2483 card->state = CARD_STATE_RECOVER;
2484 /* let user_space know that device is offline */
2485 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2486 mutex_unlock(&card->conf_mutex);
2487 mutex_unlock(&card->discipline_mutex);
2491 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2493 return __qeth_l3_set_offline(cgdev, 0);
2496 static int qeth_l3_recover(void *ptr)
2498 struct qeth_card *card;
2501 card = (struct qeth_card *) ptr;
2502 QETH_CARD_TEXT(card, 2, "recover1");
2503 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2504 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2506 QETH_CARD_TEXT(card, 2, "recover2");
2507 dev_warn(&card->gdev->dev,
2508 "A recovery process has been started for the device\n");
2509 qeth_set_recovery_task(card);
2510 __qeth_l3_set_offline(card->gdev, 1);
2511 rc = __qeth_l3_set_online(card->gdev, 1);
2513 dev_info(&card->gdev->dev,
2514 "Device successfully recovered!\n");
2516 qeth_close_dev(card);
2517 dev_warn(&card->gdev->dev, "The qeth device driver "
2518 "failed to recover an error on the device\n");
2520 qeth_clear_recovery_task(card);
2521 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2522 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2526 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2528 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2530 netif_device_detach(card->dev);
2531 qeth_set_allowed_threads(card, 0, 1);
2532 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2533 if (gdev->state == CCWGROUP_OFFLINE)
2535 if (card->state == CARD_STATE_UP) {
2536 if (card->info.hwtrap)
2537 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2538 __qeth_l3_set_offline(card->gdev, 1);
2540 __qeth_l3_set_offline(card->gdev, 0);
2544 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2546 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2549 if (card->state == CARD_STATE_RECOVER) {
2550 rc = __qeth_l3_set_online(card->gdev, 1);
2553 dev_close(card->dev);
2557 rc = __qeth_l3_set_online(card->gdev, 0);
2559 qeth_set_allowed_threads(card, 0xffffffff, 0);
2560 netif_device_attach(card->dev);
2562 dev_warn(&card->gdev->dev, "The qeth device driver "
2563 "failed to recover an error on the device\n");
2567 /* Returns zero if the command is successfully "consumed" */
2568 static int qeth_l3_control_event(struct qeth_card *card,
2569 struct qeth_ipa_cmd *cmd)
2574 struct qeth_discipline qeth_l3_discipline = {
2575 .devtype = &qeth_l3_devtype,
2576 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2577 .recover = qeth_l3_recover,
2578 .setup = qeth_l3_probe_device,
2579 .remove = qeth_l3_remove_device,
2580 .set_online = qeth_l3_set_online,
2581 .set_offline = qeth_l3_set_offline,
2582 .freeze = qeth_l3_pm_suspend,
2583 .thaw = qeth_l3_pm_resume,
2584 .restore = qeth_l3_pm_resume,
2585 .do_ioctl = qeth_l3_do_ioctl,
2586 .control_event_handler = qeth_l3_control_event,
2588 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2590 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2591 struct qeth_ipaddr *addr,
2592 unsigned long event)
2596 spin_lock_bh(&card->ip_lock);
2597 qeth_l3_add_ip(card, addr);
2598 spin_unlock_bh(&card->ip_lock);
2601 spin_lock_bh(&card->ip_lock);
2602 qeth_l3_delete_ip(card, addr);
2603 spin_unlock_bh(&card->ip_lock);
2610 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2612 if (is_vlan_dev(dev))
2613 dev = vlan_dev_real_dev(dev);
2614 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2615 dev->netdev_ops == &qeth_l3_netdev_ops)
2616 return (struct qeth_card *) dev->ml_priv;
2620 static int qeth_l3_ip_event(struct notifier_block *this,
2621 unsigned long event, void *ptr)
2624 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2625 struct net_device *dev = ifa->ifa_dev->dev;
2626 struct qeth_ipaddr addr;
2627 struct qeth_card *card;
2629 if (dev_net(dev) != &init_net)
2632 card = qeth_l3_get_card_from_dev(dev);
2635 QETH_CARD_TEXT(card, 3, "ipevent");
2637 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2638 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2639 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2641 return qeth_l3_handle_ip_event(card, &addr, event);
2644 static struct notifier_block qeth_l3_ip_notifier = {
2649 static int qeth_l3_ip6_event(struct notifier_block *this,
2650 unsigned long event, void *ptr)
2652 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2653 struct net_device *dev = ifa->idev->dev;
2654 struct qeth_ipaddr addr;
2655 struct qeth_card *card;
2657 card = qeth_l3_get_card_from_dev(dev);
2660 QETH_CARD_TEXT(card, 3, "ip6event");
2661 if (!qeth_is_supported(card, IPA_IPV6))
2664 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
2665 addr.u.a6.addr = ifa->addr;
2666 addr.u.a6.pfxlen = ifa->prefix_len;
2668 return qeth_l3_handle_ip_event(card, &addr, event);
2671 static struct notifier_block qeth_l3_ip6_notifier = {
2676 static int qeth_l3_register_notifiers(void)
2680 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2681 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2684 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2686 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2692 static void qeth_l3_unregister_notifiers(void)
2694 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2695 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2696 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2699 static int __init qeth_l3_init(void)
2701 pr_info("register layer 3 discipline\n");
2702 return qeth_l3_register_notifiers();
2705 static void __exit qeth_l3_exit(void)
2707 qeth_l3_unregister_notifiers();
2708 pr_info("unregister layer 3 discipline\n");
2711 module_init(qeth_l3_init);
2712 module_exit(qeth_l3_exit);
2713 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2714 MODULE_DESCRIPTION("qeth layer 3 discipline");
2715 MODULE_LICENSE("GPL");