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 if (recover && card->options.sniffer)
284 spin_lock_bh(&card->ip_lock);
286 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
288 hash_del(&addr->hnode);
292 addr->disp_flag = QETH_DISP_ADDR_ADD;
295 spin_unlock_bh(&card->ip_lock);
297 spin_lock_bh(&card->mclock);
299 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
300 hash_del(&addr->hnode);
304 spin_unlock_bh(&card->mclock);
308 static void qeth_l3_recover_ip(struct qeth_card *card)
310 struct qeth_ipaddr *addr;
311 struct hlist_node *tmp;
315 QETH_CARD_TEXT(card, 4, "recovrip");
317 spin_lock_bh(&card->ip_lock);
319 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
320 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
321 if (addr->proto == QETH_PROT_IPV4) {
322 addr->in_progress = 1;
323 spin_unlock_bh(&card->ip_lock);
324 rc = qeth_l3_register_addr_entry(card, addr);
325 spin_lock_bh(&card->ip_lock);
326 addr->in_progress = 0;
328 rc = qeth_l3_register_addr_entry(card, addr);
331 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
332 if (addr->ref_counter < 1)
333 qeth_l3_delete_ip(card, addr);
335 hash_del(&addr->hnode);
341 spin_unlock_bh(&card->ip_lock);
345 static int qeth_l3_send_setdelmc(struct qeth_card *card,
346 struct qeth_ipaddr *addr, int ipacmd)
349 struct qeth_cmd_buffer *iob;
350 struct qeth_ipa_cmd *cmd;
352 QETH_CARD_TEXT(card, 4, "setdelmc");
354 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
357 cmd = __ipa_cmd(iob);
358 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
359 if (addr->proto == QETH_PROT_IPV6)
360 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
361 sizeof(struct in6_addr));
363 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
365 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
370 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
373 for (i = 0; i < 16; i++) {
378 netmask[i] = (u8)(0xFF00 >> j);
384 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
386 switch (addr->type) {
387 case QETH_IP_TYPE_RXIP:
388 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
389 case QETH_IP_TYPE_VIPA:
390 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
391 QETH_IPA_DELIP_VIPA_FLAG;
393 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
397 static int qeth_l3_send_setdelip(struct qeth_card *card,
398 struct qeth_ipaddr *addr,
399 enum qeth_ipa_cmds ipacmd)
401 struct qeth_cmd_buffer *iob;
402 struct qeth_ipa_cmd *cmd;
406 QETH_CARD_TEXT(card, 4, "setdelip");
408 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
411 cmd = __ipa_cmd(iob);
413 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
414 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
416 if (addr->proto == QETH_PROT_IPV6) {
417 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
418 sizeof(struct in6_addr));
419 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
420 memcpy(cmd->data.setdelip6.mask, netmask,
421 sizeof(struct in6_addr));
422 cmd->data.setdelip6.flags = flags;
424 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
425 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
426 cmd->data.setdelip4.flags = flags;
429 return qeth_send_ipa_cmd(card, iob, NULL, NULL);
432 static int qeth_l3_send_setrouting(struct qeth_card *card,
433 enum qeth_routing_types type, enum qeth_prot_versions prot)
436 struct qeth_ipa_cmd *cmd;
437 struct qeth_cmd_buffer *iob;
439 QETH_CARD_TEXT(card, 4, "setroutg");
440 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
443 cmd = __ipa_cmd(iob);
444 cmd->data.setrtg.type = (type);
445 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
450 static int qeth_l3_correct_routing_type(struct qeth_card *card,
451 enum qeth_routing_types *type, enum qeth_prot_versions prot)
453 if (card->info.type == QETH_CARD_TYPE_IQD) {
456 case PRIMARY_CONNECTOR:
457 case SECONDARY_CONNECTOR:
458 case MULTICAST_ROUTER:
467 case SECONDARY_ROUTER:
469 case MULTICAST_ROUTER:
470 if (qeth_is_ipafunc_supported(card, prot,
482 int qeth_l3_setrouting_v4(struct qeth_card *card)
486 QETH_CARD_TEXT(card, 3, "setrtg4");
488 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
493 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
496 card->options.route4.type = NO_ROUTER;
497 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
498 " on %s. Type set to 'no router'.\n", rc,
499 QETH_CARD_IFNAME(card));
504 int qeth_l3_setrouting_v6(struct qeth_card *card)
508 QETH_CARD_TEXT(card, 3, "setrtg6");
510 if (!qeth_is_supported(card, IPA_IPV6))
512 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
517 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
520 card->options.route6.type = NO_ROUTER;
521 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
522 " on %s. Type set to 'no router'.\n", rc,
523 QETH_CARD_IFNAME(card));
529 * IP address takeover related functions
533 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
535 * Caller must hold ip_lock.
537 void qeth_l3_update_ipato(struct qeth_card *card)
539 struct qeth_ipaddr *addr;
542 hash_for_each(card->ip_htable, i, addr, hnode) {
543 if (addr->type != QETH_IP_TYPE_NORMAL)
545 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
549 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
551 struct qeth_ipato_entry *ipatoe, *tmp;
553 spin_lock_bh(&card->ip_lock);
555 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
556 list_del(&ipatoe->entry);
560 qeth_l3_update_ipato(card);
561 spin_unlock_bh(&card->ip_lock);
564 int qeth_l3_add_ipato_entry(struct qeth_card *card,
565 struct qeth_ipato_entry *new)
567 struct qeth_ipato_entry *ipatoe;
570 QETH_CARD_TEXT(card, 2, "addipato");
572 spin_lock_bh(&card->ip_lock);
574 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
575 if (ipatoe->proto != new->proto)
577 if (!memcmp(ipatoe->addr, new->addr,
578 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
579 (ipatoe->mask_bits == new->mask_bits)) {
586 list_add_tail(&new->entry, &card->ipato.entries);
587 qeth_l3_update_ipato(card);
590 spin_unlock_bh(&card->ip_lock);
595 int qeth_l3_del_ipato_entry(struct qeth_card *card,
596 enum qeth_prot_versions proto, u8 *addr,
599 struct qeth_ipato_entry *ipatoe, *tmp;
602 QETH_CARD_TEXT(card, 2, "delipato");
604 spin_lock_bh(&card->ip_lock);
606 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
607 if (ipatoe->proto != proto)
609 if (!memcmp(ipatoe->addr, addr,
610 (proto == QETH_PROT_IPV4)? 4:16) &&
611 (ipatoe->mask_bits == mask_bits)) {
612 list_del(&ipatoe->entry);
613 qeth_l3_update_ipato(card);
619 spin_unlock_bh(&card->ip_lock);
623 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
624 enum qeth_ip_types type,
625 enum qeth_prot_versions proto)
627 struct qeth_ipaddr addr;
630 qeth_l3_init_ipaddr(&addr, type, proto);
631 if (proto == QETH_PROT_IPV4)
632 memcpy(&addr.u.a4.addr, ip, 4);
634 memcpy(&addr.u.a6.addr, ip, 16);
636 spin_lock_bh(&card->ip_lock);
637 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
638 spin_unlock_bh(&card->ip_lock);
642 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
644 struct qeth_ipaddr addr;
647 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
648 addr.u.a6.addr.s6_addr[0] = 0xfe;
649 addr.u.a6.addr.s6_addr[1] = 0x80;
650 for (i = 0; i < 8; i++)
651 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
653 spin_lock_bh(&card->ip_lock);
654 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
655 spin_unlock_bh(&card->ip_lock);
659 static int qeth_l3_register_addr_entry(struct qeth_card *card,
660 struct qeth_ipaddr *addr)
667 if (addr->proto == QETH_PROT_IPV4) {
668 QETH_CARD_TEXT(card, 2, "setaddr4");
669 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
670 } else if (addr->proto == QETH_PROT_IPV6) {
671 QETH_CARD_TEXT(card, 2, "setaddr6");
672 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
673 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
675 QETH_CARD_TEXT(card, 2, "setaddr?");
676 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
679 if (addr->is_multicast)
680 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
682 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
684 QETH_CARD_TEXT(card, 2, "failed");
685 } while ((--cnt > 0) && rc);
687 QETH_CARD_TEXT(card, 2, "FAILED");
688 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
689 dev_warn(&card->gdev->dev,
690 "Registering IP address %s failed\n", buf);
695 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
696 struct qeth_ipaddr *addr)
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);
953 eth_random_addr(card->dev->dev_addr);
958 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
961 struct qeth_cmd_buffer *iob;
962 struct qeth_ipa_cmd *cmd;
964 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
966 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
970 cmd = __ipa_cmd(iob);
971 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
972 card->info.unique_id;
974 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
979 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
980 struct qeth_reply *reply, unsigned long data)
982 struct qeth_ipa_cmd *cmd;
984 cmd = (struct qeth_ipa_cmd *) data;
985 if (cmd->hdr.return_code == 0)
986 card->info.unique_id = *((__u16 *)
987 &cmd->data.create_destroy_addr.unique_id[6]);
989 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
990 UNIQUE_ID_NOT_BY_CARD;
991 dev_warn(&card->gdev->dev, "The network adapter failed to "
992 "generate a unique ID\n");
997 static int qeth_l3_get_unique_id(struct qeth_card *card)
1000 struct qeth_cmd_buffer *iob;
1001 struct qeth_ipa_cmd *cmd;
1003 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1005 if (!qeth_is_supported(card, IPA_IPV6)) {
1006 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1007 UNIQUE_ID_NOT_BY_CARD;
1011 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1015 cmd = __ipa_cmd(iob);
1016 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1017 card->info.unique_id;
1019 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1024 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1027 struct qeth_ipa_cmd *cmd;
1030 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1032 cmd = (struct qeth_ipa_cmd *)data;
1033 rc = cmd->hdr.return_code;
1035 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1036 switch (cmd->data.diagass.action) {
1037 case QETH_DIAGS_CMD_TRACE_QUERY:
1039 case QETH_DIAGS_CMD_TRACE_DISABLE:
1042 case IPA_RC_INVALID_SUBCMD:
1043 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1044 dev_info(&card->gdev->dev, "The HiperSockets network "
1045 "traffic analyzer is deactivated\n");
1051 case QETH_DIAGS_CMD_TRACE_ENABLE:
1054 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1055 dev_info(&card->gdev->dev, "The HiperSockets network "
1056 "traffic analyzer is activated\n");
1058 case IPA_RC_HARDWARE_AUTH_ERROR:
1059 dev_warn(&card->gdev->dev, "The device is not "
1060 "authorized to run as a HiperSockets network "
1061 "traffic analyzer\n");
1063 case IPA_RC_TRACE_ALREADY_ACTIVE:
1064 dev_warn(&card->gdev->dev, "A HiperSockets "
1065 "network traffic analyzer is already "
1066 "active in the HiperSockets LAN\n");
1073 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1074 cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1081 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1083 struct qeth_cmd_buffer *iob;
1084 struct qeth_ipa_cmd *cmd;
1086 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1088 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1091 cmd = __ipa_cmd(iob);
1092 cmd->data.diagass.subcmd_len = 16;
1093 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1094 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1095 cmd->data.diagass.action = diags_cmd;
1096 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1100 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1102 struct ip_mc_list *im4;
1103 struct qeth_ipaddr *tmp, *ipm;
1105 QETH_CARD_TEXT(card, 4, "addmc");
1107 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1111 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1112 im4 = rcu_dereference(im4->next_rcu)) {
1113 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1114 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1115 tmp->is_multicast = 1;
1117 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1119 /* for mcast, by-IP match means full match */
1120 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1122 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1125 ether_addr_copy(ipm->mac, tmp->mac);
1126 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1127 ipm->is_multicast = 1;
1128 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1129 hash_add(card->ip_mc_htable,
1130 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1137 /* called with rcu_read_lock */
1138 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1140 struct in_device *in_dev;
1143 QETH_CARD_TEXT(card, 4, "addmcvl");
1145 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1148 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1149 struct net_device *netdev;
1151 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1153 if (netdev == NULL ||
1154 !(netdev->flags & IFF_UP))
1156 in_dev = __in_dev_get_rcu(netdev);
1159 qeth_l3_add_mc_to_hash(card, in_dev);
1163 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1165 struct in_device *in4_dev;
1167 QETH_CARD_TEXT(card, 4, "chkmcv4");
1170 in4_dev = __in_dev_get_rcu(card->dev);
1171 if (in4_dev == NULL)
1173 qeth_l3_add_mc_to_hash(card, in4_dev);
1174 qeth_l3_add_vlan_mc(card);
1179 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1180 struct inet6_dev *in6_dev)
1182 struct qeth_ipaddr *ipm;
1183 struct ifmcaddr6 *im6;
1184 struct qeth_ipaddr *tmp;
1186 QETH_CARD_TEXT(card, 4, "addmc6");
1188 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1192 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1193 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1194 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1195 sizeof(struct in6_addr));
1196 tmp->is_multicast = 1;
1198 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1200 /* for mcast, by-IP match means full match */
1201 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1205 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1209 ether_addr_copy(ipm->mac, tmp->mac);
1210 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1211 sizeof(struct in6_addr));
1212 ipm->is_multicast = 1;
1213 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1214 hash_add(card->ip_mc_htable,
1215 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1221 /* called with rcu_read_lock */
1222 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1224 struct inet6_dev *in_dev;
1227 QETH_CARD_TEXT(card, 4, "admc6vl");
1229 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1232 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1233 struct net_device *netdev;
1235 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1237 if (netdev == NULL ||
1238 !(netdev->flags & IFF_UP))
1240 in_dev = in6_dev_get(netdev);
1243 read_lock_bh(&in_dev->lock);
1244 qeth_l3_add_mc6_to_hash(card, in_dev);
1245 read_unlock_bh(&in_dev->lock);
1246 in6_dev_put(in_dev);
1250 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1252 struct inet6_dev *in6_dev;
1254 QETH_CARD_TEXT(card, 4, "chkmcv6");
1256 if (!qeth_is_supported(card, IPA_IPV6))
1258 in6_dev = in6_dev_get(card->dev);
1263 read_lock_bh(&in6_dev->lock);
1264 qeth_l3_add_mc6_to_hash(card, in6_dev);
1265 qeth_l3_add_vlan_mc6(card);
1266 read_unlock_bh(&in6_dev->lock);
1268 in6_dev_put(in6_dev);
1271 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1272 __be16 proto, u16 vid)
1274 struct qeth_card *card = dev->ml_priv;
1276 set_bit(vid, card->active_vlans);
1280 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1281 __be16 proto, u16 vid)
1283 struct qeth_card *card = dev->ml_priv;
1285 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1287 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1288 QETH_CARD_TEXT(card, 3, "kidREC");
1291 clear_bit(vid, card->active_vlans);
1292 qeth_l3_set_rx_mode(dev);
1296 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1297 struct qeth_hdr *hdr)
1299 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1300 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1302 unsigned char tg_addr[ETH_ALEN];
1304 skb_reset_network_header(skb);
1305 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1306 case QETH_CAST_MULTICAST:
1307 if (prot == ETH_P_IP)
1308 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1310 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1312 card->stats.multicast++;
1314 case QETH_CAST_BROADCAST:
1315 ether_addr_copy(tg_addr, card->dev->broadcast);
1316 card->stats.multicast++;
1319 if (card->options.sniffer)
1320 skb->pkt_type = PACKET_OTHERHOST;
1321 ether_addr_copy(tg_addr, card->dev->dev_addr);
1324 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1325 card->dev->header_ops->create(skb, card->dev, prot,
1326 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1329 card->dev->header_ops->create(skb, card->dev, prot,
1330 tg_addr, "FAKELL", skb->len);
1333 skb->protocol = eth_type_trans(skb, card->dev);
1335 /* copy VLAN tag from hdr into skb */
1336 if (!card->options.sniffer &&
1337 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1338 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1339 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1340 hdr->hdr.l3.vlan_id :
1341 hdr->hdr.l3.next_hop.rx.vlan_id;
1342 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1345 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1348 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1349 int budget, int *done)
1351 struct net_device *dev = card->dev;
1353 struct sk_buff *skb;
1354 struct qeth_hdr *hdr;
1359 WARN_ON_ONCE(!budget);
1361 skb = qeth_core_get_next_skb(card,
1362 &card->qdio.in_q->bufs[card->rx.b_index],
1363 &card->rx.b_element, &card->rx.e_offset, &hdr);
1368 switch (hdr->hdr.l3.id) {
1369 case QETH_HEADER_TYPE_LAYER3:
1370 magic = *(__u16 *)skb->data;
1371 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1372 (magic == ETH_P_AF_IUCV)) {
1374 dev_hard_header(skb, dev, ETH_P_AF_IUCV,
1375 dev->dev_addr, "FAKELL", len);
1376 skb->protocol = eth_type_trans(skb, dev);
1377 netif_receive_skb(skb);
1379 qeth_l3_rebuild_skb(card, skb, hdr);
1381 napi_gro_receive(&card->napi, skb);
1384 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1385 skb->protocol = eth_type_trans(skb, skb->dev);
1387 netif_receive_skb(skb);
1390 dev_kfree_skb_any(skb);
1391 QETH_CARD_TEXT(card, 3, "inbunkno");
1392 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1397 card->stats.rx_packets++;
1398 card->stats.rx_bytes += len;
1403 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1405 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1406 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1408 qeth_set_allowed_threads(card, 0, 1);
1409 if (card->options.sniffer &&
1410 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1411 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1412 if (card->read.state == CH_STATE_UP &&
1413 card->write.state == CH_STATE_UP &&
1414 (card->state == CARD_STATE_UP)) {
1416 qeth_l3_stop(card->dev);
1419 dev_close(card->dev);
1422 card->state = CARD_STATE_SOFTSETUP;
1424 if (card->state == CARD_STATE_SOFTSETUP) {
1425 qeth_l3_clear_ip_htable(card, 1);
1426 qeth_clear_ipacmd_list(card);
1427 card->state = CARD_STATE_HARDSETUP;
1429 if (card->state == CARD_STATE_HARDSETUP) {
1430 qeth_qdio_clear_card(card, 0);
1431 qeth_clear_qdio_buffers(card);
1432 qeth_clear_working_pool_list(card);
1433 card->state = CARD_STATE_DOWN;
1435 if (card->state == CARD_STATE_DOWN) {
1436 qeth_clear_cmd_buffers(&card->read);
1437 qeth_clear_cmd_buffers(&card->write);
1442 * test for and Switch promiscuous mode (on or off)
1443 * either for guestlan or HiperSocket Sniffer
1446 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1448 struct net_device *dev = card->dev;
1450 if (((dev->flags & IFF_PROMISC) &&
1451 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1452 (!(dev->flags & IFF_PROMISC) &&
1453 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1456 if (card->info.guestlan) { /* Guestlan trace */
1457 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1458 qeth_setadp_promisc_mode(card);
1459 } else if (card->options.sniffer && /* HiperSockets trace */
1460 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1461 if (dev->flags & IFF_PROMISC) {
1462 QETH_CARD_TEXT(card, 3, "+promisc");
1463 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1465 QETH_CARD_TEXT(card, 3, "-promisc");
1466 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1471 static void qeth_l3_set_rx_mode(struct net_device *dev)
1473 struct qeth_card *card = dev->ml_priv;
1474 struct qeth_ipaddr *addr;
1475 struct hlist_node *tmp;
1478 QETH_CARD_TEXT(card, 3, "setmulti");
1479 if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1480 (card->state != CARD_STATE_UP))
1482 if (!card->options.sniffer) {
1483 spin_lock_bh(&card->mclock);
1485 qeth_l3_add_multicast_ipv4(card);
1486 qeth_l3_add_multicast_ipv6(card);
1488 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1489 switch (addr->disp_flag) {
1490 case QETH_DISP_ADDR_DELETE:
1491 rc = qeth_l3_deregister_addr_entry(card, addr);
1492 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) {
1493 hash_del(&addr->hnode);
1497 case QETH_DISP_ADDR_ADD:
1498 rc = qeth_l3_register_addr_entry(card, addr);
1499 if (rc && rc != IPA_RC_LAN_OFFLINE) {
1500 hash_del(&addr->hnode);
1504 addr->ref_counter = 1;
1507 /* for next call to set_rx_mode(): */
1508 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1512 spin_unlock_bh(&card->mclock);
1514 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1517 qeth_l3_handle_promisc_mode(card);
1520 static const char *qeth_l3_arp_get_error_cause(int *rc)
1523 case QETH_IPA_ARP_RC_FAILED:
1525 return "operation failed";
1526 case QETH_IPA_ARP_RC_NOTSUPP:
1528 return "operation not supported";
1529 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1531 return "argument out of range";
1532 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1534 return "query operation not supported";
1535 case QETH_IPA_ARP_RC_Q_NO_DATA:
1537 return "no query data available";
1539 return "unknown error";
1543 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1548 QETH_CARD_TEXT(card, 3, "arpstnoe");
1551 * currently GuestLAN only supports the ARP assist function
1552 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1553 * thus we say EOPNOTSUPP for this ARP function
1555 if (card->info.guestlan)
1557 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1560 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1561 IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1565 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
1566 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
1567 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1572 static __u32 get_arp_entry_size(struct qeth_card *card,
1573 struct qeth_arp_query_data *qdata,
1574 struct qeth_arp_entrytype *type, __u8 strip_entries)
1579 is_hsi = qdata->reply_bits == 5;
1580 if (type->ip == QETHARP_IP_ADDR_V4) {
1581 QETH_CARD_TEXT(card, 4, "arpev4");
1582 if (strip_entries) {
1583 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1584 sizeof(struct qeth_arp_qi_entry7_short);
1586 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1587 sizeof(struct qeth_arp_qi_entry7);
1589 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1590 QETH_CARD_TEXT(card, 4, "arpev6");
1591 if (strip_entries) {
1593 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1594 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1597 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1598 sizeof(struct qeth_arp_qi_entry7_ipv6);
1601 QETH_CARD_TEXT(card, 4, "arpinv");
1608 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1610 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1611 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1614 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1615 struct qeth_reply *reply, unsigned long data)
1617 struct qeth_ipa_cmd *cmd;
1618 struct qeth_arp_query_data *qdata;
1619 struct qeth_arp_query_info *qinfo;
1622 int entrybytes_done;
1624 __u8 do_strip_entries;
1626 QETH_CARD_TEXT(card, 3, "arpquecb");
1628 qinfo = (struct qeth_arp_query_info *) reply->param;
1629 cmd = (struct qeth_ipa_cmd *) data;
1630 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1631 if (cmd->hdr.return_code) {
1632 QETH_CARD_TEXT(card, 4, "arpcberr");
1633 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1636 if (cmd->data.setassparms.hdr.return_code) {
1637 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1638 QETH_CARD_TEXT(card, 4, "setaperr");
1639 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1642 qdata = &cmd->data.setassparms.data.query_arp;
1643 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1645 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1646 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1647 entrybytes_done = 0;
1648 for (e = 0; e < qdata->no_entries; ++e) {
1651 struct qeth_arp_entrytype *etype;
1653 cur_entry = &qdata->data + entrybytes_done;
1654 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1655 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1656 QETH_CARD_TEXT(card, 4, "pmis");
1657 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1660 esize = get_arp_entry_size(card, qdata, etype,
1662 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1666 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1667 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
1668 cmd->hdr.return_code = IPA_RC_ENOMEM;
1672 memcpy(qinfo->udata + qinfo->udata_offset,
1673 &qdata->data + entrybytes_done + stripped_bytes,
1675 entrybytes_done += esize + stripped_bytes;
1676 qinfo->udata_offset += esize;
1677 ++qinfo->no_entries;
1679 /* check if all replies received ... */
1680 if (cmd->data.setassparms.hdr.seq_no <
1681 cmd->data.setassparms.hdr.number_of_replies)
1683 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1684 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1685 /* keep STRIP_ENTRIES flag so the user program can distinguish
1686 * stripped entries from normal ones */
1687 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1688 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1689 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1690 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1694 memcpy(qinfo->udata, &i, 4);
1698 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
1699 struct qeth_cmd_buffer *iob, int len,
1700 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1704 QETH_CARD_TEXT(card, 4, "sendarp");
1706 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
1707 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
1708 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
1709 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
1710 reply_cb, reply_param);
1713 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1714 enum qeth_prot_versions prot,
1715 struct qeth_arp_query_info *qinfo)
1717 struct qeth_cmd_buffer *iob;
1718 struct qeth_ipa_cmd *cmd;
1722 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1724 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1725 IPA_CMD_ASS_ARP_QUERY_INFO,
1726 sizeof(struct qeth_arp_query_data)
1731 cmd = __ipa_cmd(iob);
1732 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1733 cmd->data.setassparms.data.query_arp.reply_bits = 0;
1734 cmd->data.setassparms.data.query_arp.no_entries = 0;
1735 rc = qeth_l3_send_ipa_arp_cmd(card, iob,
1736 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
1737 qeth_l3_arp_query_cb, (void *)qinfo);
1741 "Error while querying ARP cache on %s: %s "
1742 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1743 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1749 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1751 struct qeth_arp_query_info qinfo = {0, };
1754 QETH_CARD_TEXT(card, 3, "arpquery");
1756 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1757 IPA_ARP_PROCESSING)) {
1758 QETH_CARD_TEXT(card, 3, "arpqnsup");
1762 /* get size of userspace buffer and mask_bits -> 6 bytes */
1763 if (copy_from_user(&qinfo, udata, 6)) {
1767 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1772 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1773 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1775 if (copy_to_user(udata, qinfo.udata, 4))
1779 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1780 /* fails in case of GuestLAN QDIO mode */
1781 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1783 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1784 QETH_CARD_TEXT(card, 4, "qactf");
1788 QETH_CARD_TEXT(card, 4, "qacts");
1796 static int qeth_l3_arp_add_entry(struct qeth_card *card,
1797 struct qeth_arp_cache_entry *entry)
1799 struct qeth_cmd_buffer *iob;
1804 QETH_CARD_TEXT(card, 3, "arpadent");
1807 * currently GuestLAN only supports the ARP assist function
1808 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1809 * thus we say EOPNOTSUPP for this ARP function
1811 if (card->info.guestlan)
1813 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1817 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1818 IPA_CMD_ASS_ARP_ADD_ENTRY,
1819 sizeof(struct qeth_arp_cache_entry),
1823 rc = qeth_send_setassparms(card, iob,
1824 sizeof(struct qeth_arp_cache_entry),
1825 (unsigned long) entry,
1826 qeth_setassparms_cb, NULL);
1829 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1830 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
1831 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1832 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1837 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
1838 struct qeth_arp_cache_entry *entry)
1840 struct qeth_cmd_buffer *iob;
1841 char buf[16] = {0, };
1845 QETH_CARD_TEXT(card, 3, "arprment");
1848 * currently GuestLAN only supports the ARP assist function
1849 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1850 * thus we say EOPNOTSUPP for this ARP function
1852 if (card->info.guestlan)
1854 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1857 memcpy(buf, entry, 12);
1858 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1859 IPA_CMD_ASS_ARP_REMOVE_ENTRY,
1864 rc = qeth_send_setassparms(card, iob,
1865 12, (unsigned long)buf,
1866 qeth_setassparms_cb, NULL);
1870 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1871 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
1872 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1873 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1878 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1883 QETH_CARD_TEXT(card, 3, "arpflush");
1886 * currently GuestLAN only supports the ARP assist function
1887 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1888 * thus we say EOPNOTSUPP for this ARP function
1890 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
1892 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1895 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1896 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
1899 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
1900 "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1901 qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1906 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1908 struct qeth_card *card = dev->ml_priv;
1909 struct qeth_arp_cache_entry arp_entry;
1913 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1914 if (!capable(CAP_NET_ADMIN)) {
1918 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1920 case SIOC_QETH_ARP_QUERY_INFO:
1921 if (!capable(CAP_NET_ADMIN)) {
1925 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1927 case SIOC_QETH_ARP_ADD_ENTRY:
1928 if (!capable(CAP_NET_ADMIN)) {
1932 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1933 sizeof(struct qeth_arp_cache_entry)))
1936 rc = qeth_l3_arp_add_entry(card, &arp_entry);
1938 case SIOC_QETH_ARP_REMOVE_ENTRY:
1939 if (!capable(CAP_NET_ADMIN)) {
1943 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1944 sizeof(struct qeth_arp_cache_entry)))
1947 rc = qeth_l3_arp_remove_entry(card, &arp_entry);
1949 case SIOC_QETH_ARP_FLUSH_CACHE:
1950 if (!capable(CAP_NET_ADMIN)) {
1954 rc = qeth_l3_arp_flush_cache(card);
1962 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1964 struct neighbour *n = NULL;
1965 struct dst_entry *dst;
1970 n = dst_neigh_lookup_skb(dst, skb);
1972 int cast_type = n->type;
1976 if ((cast_type == RTN_BROADCAST) ||
1977 (cast_type == RTN_MULTICAST) ||
1978 (cast_type == RTN_ANYCAST))
1984 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1985 switch (qeth_get_ip_version(skb)) {
1987 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1988 RTN_MULTICAST : RTN_UNICAST;
1990 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1991 RTN_MULTICAST : RTN_UNICAST;
1993 /* ... and MAC address */
1994 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1995 skb->dev->broadcast))
1996 return RTN_BROADCAST;
1997 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
1998 return RTN_MULTICAST;
1999 /* default to unicast */
2004 static void qeth_l3_fill_af_iucv_hdr(struct qeth_hdr *hdr, struct sk_buff *skb,
2005 unsigned int data_len)
2009 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2010 hdr->hdr.l3.length = data_len;
2011 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2013 memset(daddr, 0, sizeof(daddr));
2016 memcpy(&daddr[8], iucv_trans_hdr(skb)->destUserID, 8);
2017 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16);
2020 static u8 qeth_l3_cast_type_to_flag(int cast_type)
2022 if (cast_type == RTN_MULTICAST)
2023 return QETH_CAST_MULTICAST;
2024 if (cast_type == RTN_ANYCAST)
2025 return QETH_CAST_ANYCAST;
2026 if (cast_type == RTN_BROADCAST)
2027 return QETH_CAST_BROADCAST;
2028 return QETH_CAST_UNICAST;
2031 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2032 struct sk_buff *skb, int ipv, int cast_type,
2033 unsigned int data_len)
2035 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
2037 hdr->hdr.l3.length = data_len;
2039 if (skb_is_gso(skb)) {
2040 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
2042 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2043 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2044 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
2045 /* some HW requires combined L3+L4 csum offload: */
2047 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
2048 if (card->options.performance_stats)
2049 card->perf_stats.tx_csum++;
2053 if (ipv == 4 || IS_IQD(card)) {
2054 /* NETIF_F_HW_VLAN_CTAG_TX */
2055 if (skb_vlan_tag_present(skb)) {
2056 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
2057 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2059 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
2060 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2061 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
2066 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
2067 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
2068 skb->dev->broadcast))
2069 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
2071 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
2072 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
2076 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
2079 struct rtable *rt = skb_rtable(skb);
2081 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2082 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2086 const struct rt6_info *rt = skb_rt6_info(skb);
2087 const struct in6_addr *next_hop;
2089 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2090 next_hop = &rt->rt6i_gateway;
2092 next_hop = &ipv6_hdr(skb)->daddr;
2093 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16);
2095 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2096 if (card->info.type != QETH_CARD_TYPE_IQD)
2097 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2102 static void qeth_l3_fixup_headers(struct sk_buff *skb)
2104 struct iphdr *iph = ip_hdr(skb);
2106 /* this is safe, IPv6 traffic takes a different path */
2107 if (skb->ip_summed == CHECKSUM_PARTIAL)
2109 if (skb_is_gso(skb)) {
2111 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
2116 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2117 struct qeth_qdio_out_q *queue, int ipv, int cast_type)
2119 unsigned int hw_hdr_len, proto_len, frame_len, elements;
2120 unsigned char eth_hdr[ETH_HLEN];
2121 bool is_tso = skb_is_gso(skb);
2122 unsigned int data_offset = 0;
2123 struct qeth_hdr *hdr = NULL;
2124 unsigned int hd_len = 0;
2129 hw_hdr_len = sizeof(struct qeth_hdr_tso);
2130 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb) -
2133 hw_hdr_len = sizeof(struct qeth_hdr);
2137 /* re-use the L2 header area for the HW header: */
2138 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2141 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN);
2142 skb_pull(skb, ETH_HLEN);
2143 frame_len = skb->len;
2145 qeth_l3_fixup_headers(skb);
2146 push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len,
2150 if (is_tso || !push_len) {
2151 /* HW header needs its own buffer element. */
2152 hd_len = hw_hdr_len + proto_len;
2153 data_offset = push_len + proto_len;
2155 memset(hdr, 0, hw_hdr_len);
2157 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
2158 qeth_l3_fill_af_iucv_hdr(hdr, skb, frame_len);
2160 qeth_l3_fill_header(card, hdr, skb, ipv, cast_type, frame_len);
2162 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
2163 frame_len - proto_len, skb,
2167 is_sg = skb_is_nonlinear(skb);
2169 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
2172 /* TODO: drop skb_orphan() once TX completion is fast enough */
2174 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
2179 if (card->options.performance_stats) {
2180 card->perf_stats.buf_elements_sent += elements;
2182 card->perf_stats.sg_skbs_sent++;
2184 card->perf_stats.large_send_bytes += frame_len;
2185 card->perf_stats.large_send_cnt++;
2190 kmem_cache_free(qeth_core_header_cache, hdr);
2192 /* roll back to ETH header */
2193 skb_pull(skb, push_len);
2194 skb_push(skb, ETH_HLEN);
2195 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
2201 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2202 struct net_device *dev)
2204 int cast_type = qeth_l3_get_cast_type(skb);
2205 struct qeth_card *card = dev->ml_priv;
2206 int ipv = qeth_get_ip_version(skb);
2207 struct qeth_qdio_out_q *queue;
2208 int tx_bytes = skb->len;
2212 if (card->options.sniffer)
2214 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2215 (card->options.cq == QETH_CQ_ENABLED &&
2216 skb->protocol != htons(ETH_P_AF_IUCV)))
2220 if (card->state != CARD_STATE_UP) {
2221 card->stats.tx_carrier_errors++;
2225 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable)
2228 queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
2230 if (card->options.performance_stats) {
2231 card->perf_stats.outbound_cnt++;
2232 card->perf_stats.outbound_start_time = qeth_get_micros();
2234 netif_stop_queue(dev);
2236 if (ipv == 4 || IS_IQD(card))
2237 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type);
2239 rc = qeth_xmit(card, skb, queue, ipv, cast_type,
2240 qeth_l3_fill_header);
2243 card->stats.tx_packets++;
2244 card->stats.tx_bytes += tx_bytes;
2245 if (card->options.performance_stats)
2246 card->perf_stats.outbound_time += qeth_get_micros() -
2247 card->perf_stats.outbound_start_time;
2248 netif_wake_queue(dev);
2249 return NETDEV_TX_OK;
2250 } else if (rc == -EBUSY) {
2251 return NETDEV_TX_BUSY;
2252 } /* else fall through */
2255 card->stats.tx_dropped++;
2256 card->stats.tx_errors++;
2257 dev_kfree_skb_any(skb);
2258 netif_wake_queue(dev);
2259 return NETDEV_TX_OK;
2262 static int __qeth_l3_open(struct net_device *dev)
2264 struct qeth_card *card = dev->ml_priv;
2267 QETH_CARD_TEXT(card, 4, "qethopen");
2268 if (card->state == CARD_STATE_UP)
2270 if (card->state != CARD_STATE_SOFTSETUP)
2272 card->data.state = CH_STATE_UP;
2273 card->state = CARD_STATE_UP;
2274 netif_start_queue(dev);
2276 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2277 napi_enable(&card->napi);
2279 napi_schedule(&card->napi);
2280 /* kick-start the NAPI softirq: */
2287 static int qeth_l3_open(struct net_device *dev)
2289 struct qeth_card *card = dev->ml_priv;
2291 QETH_CARD_TEXT(card, 5, "qethope_");
2292 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2293 QETH_CARD_TEXT(card, 3, "openREC");
2294 return -ERESTARTSYS;
2296 return __qeth_l3_open(dev);
2299 static int qeth_l3_stop(struct net_device *dev)
2301 struct qeth_card *card = dev->ml_priv;
2303 QETH_CARD_TEXT(card, 4, "qethstop");
2304 netif_tx_disable(dev);
2305 if (card->state == CARD_STATE_UP) {
2306 card->state = CARD_STATE_SOFTSETUP;
2307 napi_disable(&card->napi);
2312 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2313 .get_link = ethtool_op_get_link,
2314 .get_strings = qeth_core_get_strings,
2315 .get_ethtool_stats = qeth_core_get_ethtool_stats,
2316 .get_sset_count = qeth_core_get_sset_count,
2317 .get_drvinfo = qeth_core_get_drvinfo,
2318 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2322 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2323 * NOARP on the netdevice is no option because it also turns off neighbor
2324 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2325 * arp resolution but we want the hard header (packet socket will work
2328 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2330 n->nud_state = NUD_NOARP;
2331 memcpy(n->ha, "FAKELL", 6);
2332 n->output = n->ops->connected_output;
2337 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2339 if (np->tbl->family == AF_INET)
2340 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2345 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2346 struct net_device *dev,
2347 netdev_features_t features)
2349 if (qeth_get_ip_version(skb) != 4)
2350 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2351 return qeth_features_check(skb, dev, features);
2354 static const struct net_device_ops qeth_l3_netdev_ops = {
2355 .ndo_open = qeth_l3_open,
2356 .ndo_stop = qeth_l3_stop,
2357 .ndo_get_stats = qeth_get_stats,
2358 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2359 .ndo_validate_addr = eth_validate_addr,
2360 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2361 .ndo_do_ioctl = qeth_do_ioctl,
2362 .ndo_fix_features = qeth_fix_features,
2363 .ndo_set_features = qeth_set_features,
2364 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2365 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2366 .ndo_tx_timeout = qeth_tx_timeout,
2369 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2370 .ndo_open = qeth_l3_open,
2371 .ndo_stop = qeth_l3_stop,
2372 .ndo_get_stats = qeth_get_stats,
2373 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2374 .ndo_features_check = qeth_l3_osa_features_check,
2375 .ndo_validate_addr = eth_validate_addr,
2376 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2377 .ndo_do_ioctl = qeth_do_ioctl,
2378 .ndo_fix_features = qeth_fix_features,
2379 .ndo_set_features = qeth_set_features,
2380 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2381 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2382 .ndo_tx_timeout = qeth_tx_timeout,
2383 .ndo_neigh_setup = qeth_l3_neigh_setup,
2386 static int qeth_l3_setup_netdev(struct qeth_card *card)
2388 unsigned int headroom;
2391 if (card->dev->netdev_ops)
2394 if (card->info.type == QETH_CARD_TYPE_OSD ||
2395 card->info.type == QETH_CARD_TYPE_OSX) {
2396 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2397 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2398 pr_info("qeth_l3: ignoring TR device\n");
2402 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2404 /*IPv6 address autoconfiguration stuff*/
2405 qeth_l3_get_unique_id(card);
2406 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2407 card->dev->dev_id = card->info.unique_id & 0xffff;
2409 if (!card->info.guestlan) {
2410 card->dev->features |= NETIF_F_SG;
2411 card->dev->hw_features |= NETIF_F_TSO |
2412 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2413 card->dev->vlan_features |= NETIF_F_TSO |
2414 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2417 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2418 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2419 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2421 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2422 card->dev->hw_features |= NETIF_F_TSO6;
2423 card->dev->vlan_features |= NETIF_F_TSO6;
2426 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2427 if (card->dev->hw_features & NETIF_F_TSO6)
2428 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2429 else if (card->dev->hw_features & NETIF_F_TSO)
2430 headroom = sizeof(struct qeth_hdr_tso);
2432 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2433 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2434 card->dev->flags |= IFF_NOARP;
2435 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2436 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2438 rc = qeth_l3_iqd_read_initial_mac(card);
2442 if (card->options.hsuid[0])
2443 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2447 card->dev->needed_headroom = headroom;
2448 card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2449 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2450 NETIF_F_HW_VLAN_CTAG_RX |
2451 NETIF_F_HW_VLAN_CTAG_FILTER;
2453 netif_keep_dst(card->dev);
2454 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2455 netif_set_gso_max_size(card->dev,
2456 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2458 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2459 rc = register_netdev(card->dev);
2462 card->dev->netdev_ops = NULL;
2466 static const struct device_type qeth_l3_devtype = {
2467 .name = "qeth_layer3",
2468 .groups = qeth_l3_attr_groups,
2471 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2473 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2476 if (gdev->dev.type == &qeth_generic_devtype) {
2477 rc = qeth_l3_create_device_attributes(&gdev->dev);
2481 hash_init(card->ip_htable);
2482 hash_init(card->ip_mc_htable);
2483 card->info.hwtrap = 0;
2487 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2489 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2491 if (cgdev->dev.type == &qeth_generic_devtype)
2492 qeth_l3_remove_device_attributes(&cgdev->dev);
2494 qeth_set_allowed_threads(card, 0, 1);
2495 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2497 if (cgdev->state == CCWGROUP_ONLINE)
2498 qeth_l3_set_offline(cgdev);
2500 unregister_netdev(card->dev);
2501 qeth_l3_clear_ip_htable(card, 0);
2502 qeth_l3_clear_ipato_list(card);
2505 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2507 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2509 enum qeth_card_states recover_flag;
2511 mutex_lock(&card->discipline_mutex);
2512 mutex_lock(&card->conf_mutex);
2513 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2514 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2516 recover_flag = card->state;
2517 rc = qeth_core_hardsetup_card(card);
2519 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2524 rc = qeth_l3_setup_netdev(card);
2528 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2529 if (card->info.hwtrap &&
2530 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2531 card->info.hwtrap = 0;
2533 card->info.hwtrap = 0;
2535 card->state = CARD_STATE_HARDSETUP;
2536 qeth_print_status_message(card);
2539 QETH_DBF_TEXT(SETUP, 2, "softsetp");
2541 rc = qeth_l3_setadapter_parms(card);
2543 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2544 if (!card->options.sniffer) {
2545 rc = qeth_l3_start_ipassists(card);
2547 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2550 rc = qeth_l3_setrouting_v4(card);
2552 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2553 rc = qeth_l3_setrouting_v6(card);
2555 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2557 netif_tx_disable(card->dev);
2559 rc = qeth_init_qdio_queues(card);
2561 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2565 card->state = CARD_STATE_SOFTSETUP;
2567 qeth_set_allowed_threads(card, 0xffffffff, 0);
2568 qeth_l3_recover_ip(card);
2570 qeth_enable_hw_features(card->dev);
2571 if (recover_flag == CARD_STATE_RECOVER) {
2573 if (recovery_mode) {
2574 __qeth_l3_open(card->dev);
2575 qeth_l3_set_rx_mode(card->dev);
2577 dev_open(card->dev);
2581 qeth_trace_features(card);
2582 /* let user_space know that device is online */
2583 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2584 mutex_unlock(&card->conf_mutex);
2585 mutex_unlock(&card->discipline_mutex);
2588 qeth_l3_stop_card(card, 0);
2589 ccw_device_set_offline(CARD_DDEV(card));
2590 ccw_device_set_offline(CARD_WDEV(card));
2591 ccw_device_set_offline(CARD_RDEV(card));
2592 qdio_free(CARD_DDEV(card));
2593 if (recover_flag == CARD_STATE_RECOVER)
2594 card->state = CARD_STATE_RECOVER;
2596 card->state = CARD_STATE_DOWN;
2597 mutex_unlock(&card->conf_mutex);
2598 mutex_unlock(&card->discipline_mutex);
2602 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2604 return __qeth_l3_set_online(gdev, 0);
2607 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2610 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2611 int rc = 0, rc2 = 0, rc3 = 0;
2612 enum qeth_card_states recover_flag;
2614 mutex_lock(&card->discipline_mutex);
2615 mutex_lock(&card->conf_mutex);
2616 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2617 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2619 netif_carrier_off(card->dev);
2620 recover_flag = card->state;
2621 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2622 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2623 card->info.hwtrap = 1;
2625 qeth_l3_stop_card(card, recovery_mode);
2626 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
2628 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2631 rc = ccw_device_set_offline(CARD_DDEV(card));
2632 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2633 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2635 rc = (rc2) ? rc2 : rc3;
2637 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2638 qdio_free(CARD_DDEV(card));
2639 if (recover_flag == CARD_STATE_UP)
2640 card->state = CARD_STATE_RECOVER;
2641 /* let user_space know that device is offline */
2642 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2643 mutex_unlock(&card->conf_mutex);
2644 mutex_unlock(&card->discipline_mutex);
2648 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2650 return __qeth_l3_set_offline(cgdev, 0);
2653 static int qeth_l3_recover(void *ptr)
2655 struct qeth_card *card;
2658 card = (struct qeth_card *) ptr;
2659 QETH_CARD_TEXT(card, 2, "recover1");
2660 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2661 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2663 QETH_CARD_TEXT(card, 2, "recover2");
2664 dev_warn(&card->gdev->dev,
2665 "A recovery process has been started for the device\n");
2666 qeth_set_recovery_task(card);
2667 __qeth_l3_set_offline(card->gdev, 1);
2668 rc = __qeth_l3_set_online(card->gdev, 1);
2670 dev_info(&card->gdev->dev,
2671 "Device successfully recovered!\n");
2673 qeth_close_dev(card);
2674 dev_warn(&card->gdev->dev, "The qeth device driver "
2675 "failed to recover an error on the device\n");
2677 qeth_clear_recovery_task(card);
2678 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2679 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2683 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2685 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2687 netif_device_detach(card->dev);
2688 qeth_set_allowed_threads(card, 0, 1);
2689 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2690 if (gdev->state == CCWGROUP_OFFLINE)
2692 if (card->state == CARD_STATE_UP) {
2693 if (card->info.hwtrap)
2694 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2695 __qeth_l3_set_offline(card->gdev, 1);
2697 __qeth_l3_set_offline(card->gdev, 0);
2701 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2703 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2706 if (card->state == CARD_STATE_RECOVER) {
2707 rc = __qeth_l3_set_online(card->gdev, 1);
2710 dev_close(card->dev);
2714 rc = __qeth_l3_set_online(card->gdev, 0);
2716 qeth_set_allowed_threads(card, 0xffffffff, 0);
2717 netif_device_attach(card->dev);
2719 dev_warn(&card->gdev->dev, "The qeth device driver "
2720 "failed to recover an error on the device\n");
2724 /* Returns zero if the command is successfully "consumed" */
2725 static int qeth_l3_control_event(struct qeth_card *card,
2726 struct qeth_ipa_cmd *cmd)
2731 struct qeth_discipline qeth_l3_discipline = {
2732 .devtype = &qeth_l3_devtype,
2733 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2734 .recover = qeth_l3_recover,
2735 .setup = qeth_l3_probe_device,
2736 .remove = qeth_l3_remove_device,
2737 .set_online = qeth_l3_set_online,
2738 .set_offline = qeth_l3_set_offline,
2739 .freeze = qeth_l3_pm_suspend,
2740 .thaw = qeth_l3_pm_resume,
2741 .restore = qeth_l3_pm_resume,
2742 .do_ioctl = qeth_l3_do_ioctl,
2743 .control_event_handler = qeth_l3_control_event,
2745 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2747 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2748 struct qeth_ipaddr *addr,
2749 unsigned long event)
2753 spin_lock_bh(&card->ip_lock);
2754 qeth_l3_add_ip(card, addr);
2755 spin_unlock_bh(&card->ip_lock);
2758 spin_lock_bh(&card->ip_lock);
2759 qeth_l3_delete_ip(card, addr);
2760 spin_unlock_bh(&card->ip_lock);
2767 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2769 if (is_vlan_dev(dev))
2770 dev = vlan_dev_real_dev(dev);
2771 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2772 dev->netdev_ops == &qeth_l3_netdev_ops)
2773 return (struct qeth_card *) dev->ml_priv;
2777 static int qeth_l3_ip_event(struct notifier_block *this,
2778 unsigned long event, void *ptr)
2781 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2782 struct net_device *dev = ifa->ifa_dev->dev;
2783 struct qeth_ipaddr addr;
2784 struct qeth_card *card;
2786 if (dev_net(dev) != &init_net)
2789 card = qeth_l3_get_card_from_dev(dev);
2792 QETH_CARD_TEXT(card, 3, "ipevent");
2794 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2795 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2796 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2798 return qeth_l3_handle_ip_event(card, &addr, event);
2801 static struct notifier_block qeth_l3_ip_notifier = {
2806 static int qeth_l3_ip6_event(struct notifier_block *this,
2807 unsigned long event, void *ptr)
2809 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2810 struct net_device *dev = ifa->idev->dev;
2811 struct qeth_ipaddr addr;
2812 struct qeth_card *card;
2814 card = qeth_l3_get_card_from_dev(dev);
2817 QETH_CARD_TEXT(card, 3, "ip6event");
2818 if (!qeth_is_supported(card, IPA_IPV6))
2821 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
2822 addr.u.a6.addr = ifa->addr;
2823 addr.u.a6.pfxlen = ifa->prefix_len;
2825 return qeth_l3_handle_ip_event(card, &addr, event);
2828 static struct notifier_block qeth_l3_ip6_notifier = {
2833 static int qeth_l3_register_notifiers(void)
2837 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2838 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2841 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2843 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2849 static void qeth_l3_unregister_notifiers(void)
2851 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2852 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2853 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2856 static int __init qeth_l3_init(void)
2858 pr_info("register layer 3 discipline\n");
2859 return qeth_l3_register_notifiers();
2862 static void __exit qeth_l3_exit(void)
2864 qeth_l3_unregister_notifiers();
2865 pr_info("unregister layer 3 discipline\n");
2868 module_init(qeth_l3_init);
2869 module_exit(qeth_l3_exit);
2870 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2871 MODULE_DESCRIPTION("qeth layer 3 discipline");
2872 MODULE_LICENSE("GPL");