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 void qeth_l3_set_rx_mode(struct net_device *dev);
44 static int qeth_l3_register_addr_entry(struct qeth_card *,
45 struct qeth_ipaddr *);
46 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
47 struct qeth_ipaddr *);
49 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
51 sprintf(buf, "%pI4", addr);
54 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
56 sprintf(buf, "%pI6", addr);
59 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
62 if (proto == QETH_PROT_IPV4)
63 qeth_l3_ipaddr4_to_string(addr, buf);
64 else if (proto == QETH_PROT_IPV6)
65 qeth_l3_ipaddr6_to_string(addr, buf);
68 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
70 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
73 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
77 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
78 struct qeth_ipaddr *query)
80 u64 key = qeth_l3_ipaddr_hash(query);
81 struct qeth_ipaddr *addr;
83 if (query->is_multicast) {
84 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
85 if (qeth_l3_addr_match_ip(addr, query))
88 hash_for_each_possible(card->ip_htable, addr, hnode, key)
89 if (qeth_l3_addr_match_ip(addr, query))
95 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
100 for (i = 0; i < len; ++i) {
102 for (j = 7; j >= 0; --j) {
103 bits[i*8 + j] = octet & 1;
109 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
110 struct qeth_ipaddr *addr)
112 struct qeth_ipato_entry *ipatoe;
113 u8 addr_bits[128] = {0, };
114 u8 ipatoe_bits[128] = {0, };
117 if (!card->ipato.enabled)
119 if (addr->type != QETH_IP_TYPE_NORMAL)
122 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
123 (addr->proto == QETH_PROT_IPV4)? 4:16);
124 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
125 if (addr->proto != ipatoe->proto)
127 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
128 (ipatoe->proto == QETH_PROT_IPV4) ?
130 if (addr->proto == QETH_PROT_IPV4)
131 rc = !memcmp(addr_bits, ipatoe_bits,
132 min(32, ipatoe->mask_bits));
134 rc = !memcmp(addr_bits, ipatoe_bits,
135 min(128, ipatoe->mask_bits));
140 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
142 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
148 static int qeth_l3_delete_ip(struct qeth_card *card,
149 struct qeth_ipaddr *tmp_addr)
152 struct qeth_ipaddr *addr;
154 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
155 QETH_CARD_TEXT(card, 2, "delrxip");
156 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
157 QETH_CARD_TEXT(card, 2, "delvipa");
159 QETH_CARD_TEXT(card, 2, "delip");
161 if (tmp_addr->proto == QETH_PROT_IPV4)
162 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
164 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
165 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
168 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
169 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
173 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
175 if (addr->in_progress)
178 if (qeth_card_hw_is_reachable(card))
179 rc = qeth_l3_deregister_addr_entry(card, addr);
181 hash_del(&addr->hnode);
187 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
190 struct qeth_ipaddr *addr;
193 if (tmp_addr->type == QETH_IP_TYPE_RXIP)
194 QETH_CARD_TEXT(card, 2, "addrxip");
195 else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
196 QETH_CARD_TEXT(card, 2, "addvipa");
198 QETH_CARD_TEXT(card, 2, "addip");
200 if (tmp_addr->proto == QETH_PROT_IPV4)
201 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
203 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
204 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
207 addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
209 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
211 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
215 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
217 dev_warn(&card->gdev->dev,
218 "Registering IP address %s failed\n", buf);
221 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
225 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
226 addr->ref_counter = 1;
228 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
229 QETH_CARD_TEXT(card, 2, "tkovaddr");
232 hash_add(card->ip_htable, &addr->hnode,
233 qeth_l3_ipaddr_hash(addr));
235 if (!qeth_card_hw_is_reachable(card)) {
236 addr->disp_flag = QETH_DISP_ADDR_ADD;
240 /* qeth_l3_register_addr_entry can go to sleep
241 * if we add a IPV4 addr. It is caused by the reason
242 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
243 * Thus we should unlock spinlock, and make a protection
244 * using in_progress variable to indicate that there is
245 * an hardware operation with this IPV4 address
247 if (addr->proto == QETH_PROT_IPV4) {
248 addr->in_progress = 1;
249 spin_unlock_bh(&card->ip_lock);
250 rc = qeth_l3_register_addr_entry(card, addr);
251 spin_lock_bh(&card->ip_lock);
252 addr->in_progress = 0;
254 rc = qeth_l3_register_addr_entry(card, addr);
256 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
257 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
258 if (addr->ref_counter < 1) {
259 qeth_l3_deregister_addr_entry(card, addr);
260 hash_del(&addr->hnode);
264 hash_del(&addr->hnode);
271 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
273 struct qeth_ipaddr *addr;
274 struct hlist_node *tmp;
277 QETH_CARD_TEXT(card, 4, "clearip");
279 spin_lock_bh(&card->ip_lock);
281 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
283 hash_del(&addr->hnode);
287 addr->disp_flag = QETH_DISP_ADDR_ADD;
290 spin_unlock_bh(&card->ip_lock);
292 spin_lock_bh(&card->mclock);
294 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
295 hash_del(&addr->hnode);
299 spin_unlock_bh(&card->mclock);
303 static void qeth_l3_recover_ip(struct qeth_card *card)
305 struct qeth_ipaddr *addr;
306 struct hlist_node *tmp;
310 QETH_CARD_TEXT(card, 4, "recovrip");
312 spin_lock_bh(&card->ip_lock);
314 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
315 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
316 if (addr->proto == QETH_PROT_IPV4) {
317 addr->in_progress = 1;
318 spin_unlock_bh(&card->ip_lock);
319 rc = qeth_l3_register_addr_entry(card, addr);
320 spin_lock_bh(&card->ip_lock);
321 addr->in_progress = 0;
323 rc = qeth_l3_register_addr_entry(card, addr);
326 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
327 if (addr->ref_counter < 1)
328 qeth_l3_delete_ip(card, addr);
330 hash_del(&addr->hnode);
336 spin_unlock_bh(&card->ip_lock);
340 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
343 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
345 switch (cmd->hdr.return_code) {
348 case IPA_RC_DUPLICATE_IP_ADDRESS:
350 case IPA_RC_MC_ADDR_NOT_FOUND:
352 case IPA_RC_LAN_OFFLINE:
359 static int qeth_l3_send_setdelmc(struct qeth_card *card,
360 struct qeth_ipaddr *addr, int ipacmd)
362 struct qeth_cmd_buffer *iob;
363 struct qeth_ipa_cmd *cmd;
365 QETH_CARD_TEXT(card, 4, "setdelmc");
367 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
370 cmd = __ipa_cmd(iob);
371 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
372 if (addr->proto == QETH_PROT_IPV6)
373 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
374 sizeof(struct in6_addr));
376 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
378 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
381 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
384 for (i = 0; i < 16; i++) {
389 netmask[i] = (u8)(0xFF00 >> j);
395 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
397 switch (addr->type) {
398 case QETH_IP_TYPE_RXIP:
399 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
400 case QETH_IP_TYPE_VIPA:
401 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
402 QETH_IPA_DELIP_VIPA_FLAG;
404 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
408 static int qeth_l3_send_setdelip(struct qeth_card *card,
409 struct qeth_ipaddr *addr,
410 enum qeth_ipa_cmds ipacmd)
412 struct qeth_cmd_buffer *iob;
413 struct qeth_ipa_cmd *cmd;
417 QETH_CARD_TEXT(card, 4, "setdelip");
419 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
422 cmd = __ipa_cmd(iob);
424 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
425 QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
427 if (addr->proto == QETH_PROT_IPV6) {
428 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
429 sizeof(struct in6_addr));
430 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
431 memcpy(cmd->data.setdelip6.mask, netmask,
432 sizeof(struct in6_addr));
433 cmd->data.setdelip6.flags = flags;
435 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
436 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
437 cmd->data.setdelip4.flags = flags;
440 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
443 static int qeth_l3_send_setrouting(struct qeth_card *card,
444 enum qeth_routing_types type, enum qeth_prot_versions prot)
447 struct qeth_ipa_cmd *cmd;
448 struct qeth_cmd_buffer *iob;
450 QETH_CARD_TEXT(card, 4, "setroutg");
451 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
454 cmd = __ipa_cmd(iob);
455 cmd->data.setrtg.type = (type);
456 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
461 static int qeth_l3_correct_routing_type(struct qeth_card *card,
462 enum qeth_routing_types *type, enum qeth_prot_versions prot)
464 if (card->info.type == QETH_CARD_TYPE_IQD) {
467 case PRIMARY_CONNECTOR:
468 case SECONDARY_CONNECTOR:
469 case MULTICAST_ROUTER:
478 case SECONDARY_ROUTER:
480 case MULTICAST_ROUTER:
481 if (qeth_is_ipafunc_supported(card, prot,
493 int qeth_l3_setrouting_v4(struct qeth_card *card)
497 QETH_CARD_TEXT(card, 3, "setrtg4");
499 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
504 rc = qeth_l3_send_setrouting(card, card->options.route4.type,
507 card->options.route4.type = NO_ROUTER;
508 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
509 rc, CARD_DEVID(card));
514 int qeth_l3_setrouting_v6(struct qeth_card *card)
518 QETH_CARD_TEXT(card, 3, "setrtg6");
520 if (!qeth_is_supported(card, IPA_IPV6))
522 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
527 rc = qeth_l3_send_setrouting(card, card->options.route6.type,
530 card->options.route6.type = NO_ROUTER;
531 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
532 rc, CARD_DEVID(card));
538 * IP address takeover related functions
542 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
544 * Caller must hold ip_lock.
546 void qeth_l3_update_ipato(struct qeth_card *card)
548 struct qeth_ipaddr *addr;
551 hash_for_each(card->ip_htable, i, addr, hnode) {
552 if (addr->type != QETH_IP_TYPE_NORMAL)
554 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
558 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
560 struct qeth_ipato_entry *ipatoe, *tmp;
562 spin_lock_bh(&card->ip_lock);
564 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
565 list_del(&ipatoe->entry);
569 qeth_l3_update_ipato(card);
570 spin_unlock_bh(&card->ip_lock);
573 int qeth_l3_add_ipato_entry(struct qeth_card *card,
574 struct qeth_ipato_entry *new)
576 struct qeth_ipato_entry *ipatoe;
579 QETH_CARD_TEXT(card, 2, "addipato");
581 spin_lock_bh(&card->ip_lock);
583 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
584 if (ipatoe->proto != new->proto)
586 if (!memcmp(ipatoe->addr, new->addr,
587 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
588 (ipatoe->mask_bits == new->mask_bits)) {
595 list_add_tail(&new->entry, &card->ipato.entries);
596 qeth_l3_update_ipato(card);
599 spin_unlock_bh(&card->ip_lock);
604 int qeth_l3_del_ipato_entry(struct qeth_card *card,
605 enum qeth_prot_versions proto, u8 *addr,
608 struct qeth_ipato_entry *ipatoe, *tmp;
611 QETH_CARD_TEXT(card, 2, "delipato");
613 spin_lock_bh(&card->ip_lock);
615 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
616 if (ipatoe->proto != proto)
618 if (!memcmp(ipatoe->addr, addr,
619 (proto == QETH_PROT_IPV4)? 4:16) &&
620 (ipatoe->mask_bits == mask_bits)) {
621 list_del(&ipatoe->entry);
622 qeth_l3_update_ipato(card);
628 spin_unlock_bh(&card->ip_lock);
632 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
633 enum qeth_ip_types type,
634 enum qeth_prot_versions proto)
636 struct qeth_ipaddr addr;
639 qeth_l3_init_ipaddr(&addr, type, proto);
640 if (proto == QETH_PROT_IPV4)
641 memcpy(&addr.u.a4.addr, ip, 4);
643 memcpy(&addr.u.a6.addr, ip, 16);
645 spin_lock_bh(&card->ip_lock);
646 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
647 spin_unlock_bh(&card->ip_lock);
651 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
653 struct qeth_ipaddr addr;
656 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
657 addr.u.a6.addr.s6_addr[0] = 0xfe;
658 addr.u.a6.addr.s6_addr[1] = 0x80;
659 for (i = 0; i < 8; i++)
660 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
662 spin_lock_bh(&card->ip_lock);
663 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
664 spin_unlock_bh(&card->ip_lock);
668 static int qeth_l3_register_addr_entry(struct qeth_card *card,
669 struct qeth_ipaddr *addr)
675 if (card->options.sniffer)
678 if (addr->proto == QETH_PROT_IPV4) {
679 QETH_CARD_TEXT(card, 2, "setaddr4");
680 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
681 } else if (addr->proto == QETH_PROT_IPV6) {
682 QETH_CARD_TEXT(card, 2, "setaddr6");
683 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
684 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
686 QETH_CARD_TEXT(card, 2, "setaddr?");
687 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
690 if (addr->is_multicast)
691 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
693 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
695 QETH_CARD_TEXT(card, 2, "failed");
696 } while ((--cnt > 0) && rc);
698 QETH_CARD_TEXT(card, 2, "FAILED");
699 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
700 dev_warn(&card->gdev->dev,
701 "Registering IP address %s failed\n", buf);
706 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
707 struct qeth_ipaddr *addr)
711 if (card->options.sniffer)
714 if (addr->proto == QETH_PROT_IPV4) {
715 QETH_CARD_TEXT(card, 2, "deladdr4");
716 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
717 } else if (addr->proto == QETH_PROT_IPV6) {
718 QETH_CARD_TEXT(card, 2, "deladdr6");
719 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
720 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
722 QETH_CARD_TEXT(card, 2, "deladdr?");
723 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
725 if (addr->is_multicast)
726 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
728 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
730 QETH_CARD_TEXT(card, 2, "failed");
735 static int qeth_l3_setadapter_parms(struct qeth_card *card)
739 QETH_DBF_TEXT(SETUP, 2, "setadprm");
741 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
742 rc = qeth_setadpparms_change_macaddr(card);
744 dev_warn(&card->gdev->dev, "Reading the adapter MAC"
745 " address failed\n");
751 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
755 QETH_CARD_TEXT(card, 3, "ipaarp");
757 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
758 dev_info(&card->gdev->dev,
759 "ARP processing not supported on %s!\n",
760 QETH_CARD_IFNAME(card));
763 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
764 IPA_CMD_ASS_START, 0);
766 dev_warn(&card->gdev->dev,
767 "Starting ARP processing support for %s failed\n",
768 QETH_CARD_IFNAME(card));
773 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
777 QETH_CARD_TEXT(card, 3, "stsrcmac");
779 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
780 dev_info(&card->gdev->dev,
781 "Inbound source MAC-address not supported on %s\n",
782 QETH_CARD_IFNAME(card));
786 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
787 IPA_CMD_ASS_START, 0);
789 dev_warn(&card->gdev->dev,
790 "Starting source MAC-address support for %s failed\n",
791 QETH_CARD_IFNAME(card));
795 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
799 QETH_CARD_TEXT(card, 3, "strtvlan");
801 if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
802 dev_info(&card->gdev->dev,
803 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
807 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
808 IPA_CMD_ASS_START, 0);
810 dev_warn(&card->gdev->dev,
811 "Starting VLAN support for %s failed\n",
812 QETH_CARD_IFNAME(card));
814 dev_info(&card->gdev->dev, "VLAN enabled\n");
819 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
823 QETH_CARD_TEXT(card, 3, "stmcast");
825 if (!qeth_is_supported(card, IPA_MULTICASTING)) {
826 dev_info(&card->gdev->dev,
827 "Multicast not supported on %s\n",
828 QETH_CARD_IFNAME(card));
832 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
833 IPA_CMD_ASS_START, 0);
835 dev_warn(&card->gdev->dev,
836 "Starting multicast support for %s failed\n",
837 QETH_CARD_IFNAME(card));
839 dev_info(&card->gdev->dev, "Multicast enabled\n");
840 card->dev->flags |= IFF_MULTICAST;
845 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
849 QETH_CARD_TEXT(card, 3, "softipv6");
851 if (card->info.type == QETH_CARD_TYPE_IQD)
854 rc = qeth_send_simple_setassparms(card, IPA_IPV6,
855 IPA_CMD_ASS_START, 3);
857 dev_err(&card->gdev->dev,
858 "Activating IPv6 support for %s failed\n",
859 QETH_CARD_IFNAME(card));
862 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6,
863 IPA_CMD_ASS_START, 0);
865 dev_err(&card->gdev->dev,
866 "Activating IPv6 support for %s failed\n",
867 QETH_CARD_IFNAME(card));
870 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
871 IPA_CMD_ASS_START, 0);
873 dev_warn(&card->gdev->dev,
874 "Enabling the passthrough mode for %s failed\n",
875 QETH_CARD_IFNAME(card));
879 dev_info(&card->gdev->dev, "IPV6 enabled\n");
883 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
885 QETH_CARD_TEXT(card, 3, "strtipv6");
887 if (!qeth_is_supported(card, IPA_IPV6)) {
888 dev_info(&card->gdev->dev,
889 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
892 return qeth_l3_softsetup_ipv6(card);
895 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
899 QETH_CARD_TEXT(card, 3, "stbrdcst");
900 card->info.broadcast_capable = 0;
901 if (!qeth_is_supported(card, IPA_FILTERING)) {
902 dev_info(&card->gdev->dev,
903 "Broadcast not supported on %s\n",
904 QETH_CARD_IFNAME(card));
908 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
909 IPA_CMD_ASS_START, 0);
911 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
912 "%s failed\n", QETH_CARD_IFNAME(card));
916 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
917 IPA_CMD_ASS_CONFIGURE, 1);
919 dev_warn(&card->gdev->dev,
920 "Setting up broadcast filtering for %s failed\n",
921 QETH_CARD_IFNAME(card));
924 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
925 dev_info(&card->gdev->dev, "Broadcast enabled\n");
926 rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
927 IPA_CMD_ASS_ENABLE, 1);
929 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
930 "filtering for %s failed\n", QETH_CARD_IFNAME(card));
933 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
935 if (card->info.broadcast_capable)
936 card->dev->flags |= IFF_BROADCAST;
938 card->dev->flags &= ~IFF_BROADCAST;
942 static int qeth_l3_start_ipassists(struct qeth_card *card)
944 QETH_CARD_TEXT(card, 3, "strtipas");
946 if (qeth_set_access_ctrl_online(card, 0))
948 qeth_l3_start_ipa_arp_processing(card); /* go on*/
949 qeth_l3_start_ipa_source_mac(card); /* go on*/
950 qeth_l3_start_ipa_vlan(card); /* go on*/
951 qeth_l3_start_ipa_multicast(card); /* go on*/
952 qeth_l3_start_ipa_ipv6(card); /* go on*/
953 qeth_l3_start_ipa_broadcast(card); /* go on*/
957 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
958 struct qeth_reply *reply, unsigned long data)
960 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
962 if (cmd->hdr.return_code)
965 ether_addr_copy(card->dev->dev_addr,
966 cmd->data.create_destroy_addr.unique_id);
970 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
973 struct qeth_cmd_buffer *iob;
974 struct qeth_ipa_cmd *cmd;
976 QETH_DBF_TEXT(SETUP, 2, "hsrmac");
978 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
982 cmd = __ipa_cmd(iob);
983 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
984 card->info.unique_id;
986 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
991 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
992 struct qeth_reply *reply, unsigned long data)
994 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
996 if (cmd->hdr.return_code == 0) {
997 card->info.unique_id = *((__u16 *)
998 &cmd->data.create_destroy_addr.unique_id[6]);
1002 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1003 UNIQUE_ID_NOT_BY_CARD;
1004 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
1008 static int qeth_l3_get_unique_id(struct qeth_card *card)
1011 struct qeth_cmd_buffer *iob;
1012 struct qeth_ipa_cmd *cmd;
1014 QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1016 if (!qeth_is_supported(card, IPA_IPV6)) {
1017 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1018 UNIQUE_ID_NOT_BY_CARD;
1022 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1026 cmd = __ipa_cmd(iob);
1027 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1028 card->info.unique_id;
1030 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1035 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1038 struct qeth_ipa_cmd *cmd;
1041 QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1043 cmd = (struct qeth_ipa_cmd *)data;
1044 rc = cmd->hdr.return_code;
1046 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1047 switch (cmd->data.diagass.action) {
1048 case QETH_DIAGS_CMD_TRACE_QUERY:
1050 case QETH_DIAGS_CMD_TRACE_DISABLE:
1053 case IPA_RC_INVALID_SUBCMD:
1054 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1055 dev_info(&card->gdev->dev, "The HiperSockets network "
1056 "traffic analyzer is deactivated\n");
1062 case QETH_DIAGS_CMD_TRACE_ENABLE:
1065 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1066 dev_info(&card->gdev->dev, "The HiperSockets network "
1067 "traffic analyzer is activated\n");
1069 case IPA_RC_HARDWARE_AUTH_ERROR:
1070 dev_warn(&card->gdev->dev, "The device is not "
1071 "authorized to run as a HiperSockets network "
1072 "traffic analyzer\n");
1074 case IPA_RC_TRACE_ALREADY_ACTIVE:
1075 dev_warn(&card->gdev->dev, "A HiperSockets "
1076 "network traffic analyzer is already "
1077 "active in the HiperSockets LAN\n");
1084 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1085 cmd->data.diagass.action, CARD_DEVID(card));
1088 return rc ? -EIO : 0;
1092 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1094 struct qeth_cmd_buffer *iob;
1095 struct qeth_ipa_cmd *cmd;
1097 QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1099 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1102 cmd = __ipa_cmd(iob);
1103 cmd->data.diagass.subcmd_len = 16;
1104 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1105 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1106 cmd->data.diagass.action = diags_cmd;
1107 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1111 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1113 struct ip_mc_list *im4;
1114 struct qeth_ipaddr *tmp, *ipm;
1116 QETH_CARD_TEXT(card, 4, "addmc");
1118 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1122 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1123 im4 = rcu_dereference(im4->next_rcu)) {
1124 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1125 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1126 tmp->is_multicast = 1;
1128 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1130 /* for mcast, by-IP match means full match */
1131 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1133 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1136 ether_addr_copy(ipm->mac, tmp->mac);
1137 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1138 ipm->is_multicast = 1;
1139 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1140 hash_add(card->ip_mc_htable,
1141 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1148 /* called with rcu_read_lock */
1149 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1151 struct in_device *in_dev;
1154 QETH_CARD_TEXT(card, 4, "addmcvl");
1156 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1159 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1160 struct net_device *netdev;
1162 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1164 if (netdev == NULL ||
1165 !(netdev->flags & IFF_UP))
1167 in_dev = __in_dev_get_rcu(netdev);
1170 qeth_l3_add_mc_to_hash(card, in_dev);
1174 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1176 struct in_device *in4_dev;
1178 QETH_CARD_TEXT(card, 4, "chkmcv4");
1181 in4_dev = __in_dev_get_rcu(card->dev);
1182 if (in4_dev == NULL)
1184 qeth_l3_add_mc_to_hash(card, in4_dev);
1185 qeth_l3_add_vlan_mc(card);
1190 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1191 struct inet6_dev *in6_dev)
1193 struct qeth_ipaddr *ipm;
1194 struct ifmcaddr6 *im6;
1195 struct qeth_ipaddr *tmp;
1197 QETH_CARD_TEXT(card, 4, "addmc6");
1199 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1203 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1204 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1205 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1206 sizeof(struct in6_addr));
1207 tmp->is_multicast = 1;
1209 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1211 /* for mcast, by-IP match means full match */
1212 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1216 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1220 ether_addr_copy(ipm->mac, tmp->mac);
1221 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1222 sizeof(struct in6_addr));
1223 ipm->is_multicast = 1;
1224 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1225 hash_add(card->ip_mc_htable,
1226 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1232 /* called with rcu_read_lock */
1233 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1235 struct inet6_dev *in_dev;
1238 QETH_CARD_TEXT(card, 4, "admc6vl");
1240 if (!qeth_is_supported(card, IPA_FULL_VLAN))
1243 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1244 struct net_device *netdev;
1246 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1248 if (netdev == NULL ||
1249 !(netdev->flags & IFF_UP))
1251 in_dev = in6_dev_get(netdev);
1254 read_lock_bh(&in_dev->lock);
1255 qeth_l3_add_mc6_to_hash(card, in_dev);
1256 read_unlock_bh(&in_dev->lock);
1257 in6_dev_put(in_dev);
1261 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1263 struct inet6_dev *in6_dev;
1265 QETH_CARD_TEXT(card, 4, "chkmcv6");
1267 if (!qeth_is_supported(card, IPA_IPV6))
1269 in6_dev = in6_dev_get(card->dev);
1274 read_lock_bh(&in6_dev->lock);
1275 qeth_l3_add_mc6_to_hash(card, in6_dev);
1276 qeth_l3_add_vlan_mc6(card);
1277 read_unlock_bh(&in6_dev->lock);
1279 in6_dev_put(in6_dev);
1282 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1283 __be16 proto, u16 vid)
1285 struct qeth_card *card = dev->ml_priv;
1287 set_bit(vid, card->active_vlans);
1291 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1292 __be16 proto, u16 vid)
1294 struct qeth_card *card = dev->ml_priv;
1296 QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1298 clear_bit(vid, card->active_vlans);
1299 qeth_l3_set_rx_mode(dev);
1303 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1304 struct qeth_hdr *hdr)
1306 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1307 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1309 unsigned char tg_addr[ETH_ALEN];
1311 skb_reset_network_header(skb);
1312 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1313 case QETH_CAST_MULTICAST:
1314 if (prot == ETH_P_IP)
1315 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1317 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1318 QETH_CARD_STAT_INC(card, rx_multicast);
1320 case QETH_CAST_BROADCAST:
1321 ether_addr_copy(tg_addr, card->dev->broadcast);
1322 QETH_CARD_STAT_INC(card, rx_multicast);
1325 if (card->options.sniffer)
1326 skb->pkt_type = PACKET_OTHERHOST;
1327 ether_addr_copy(tg_addr, card->dev->dev_addr);
1330 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1331 card->dev->header_ops->create(skb, card->dev, prot,
1332 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1335 card->dev->header_ops->create(skb, card->dev, prot,
1336 tg_addr, "FAKELL", skb->len);
1339 skb->protocol = eth_type_trans(skb, card->dev);
1341 /* copy VLAN tag from hdr into skb */
1342 if (!card->options.sniffer &&
1343 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1344 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1345 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1346 hdr->hdr.l3.vlan_id :
1347 hdr->hdr.l3.next_hop.rx.vlan_id;
1348 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1351 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1354 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1355 int budget, int *done)
1357 struct net_device *dev = card->dev;
1359 struct sk_buff *skb;
1360 struct qeth_hdr *hdr;
1365 WARN_ON_ONCE(!budget);
1367 skb = qeth_core_get_next_skb(card,
1368 &card->qdio.in_q->bufs[card->rx.b_index],
1369 &card->rx.b_element, &card->rx.e_offset, &hdr);
1374 switch (hdr->hdr.l3.id) {
1375 case QETH_HEADER_TYPE_LAYER3:
1376 magic = *(__u16 *)skb->data;
1377 if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1378 (magic == ETH_P_AF_IUCV)) {
1380 dev_hard_header(skb, dev, ETH_P_AF_IUCV,
1381 dev->dev_addr, "FAKELL", len);
1382 skb->protocol = eth_type_trans(skb, dev);
1383 netif_receive_skb(skb);
1385 qeth_l3_rebuild_skb(card, skb, hdr);
1387 napi_gro_receive(&card->napi, skb);
1390 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1391 skb->protocol = eth_type_trans(skb, skb->dev);
1393 netif_receive_skb(skb);
1396 dev_kfree_skb_any(skb);
1397 QETH_CARD_TEXT(card, 3, "inbunkno");
1398 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1403 QETH_CARD_STAT_INC(card, rx_packets);
1404 QETH_CARD_STAT_ADD(card, rx_bytes, len);
1409 static void qeth_l3_stop_card(struct qeth_card *card)
1411 QETH_DBF_TEXT(SETUP, 2, "stopcard");
1412 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1414 qeth_set_allowed_threads(card, 0, 1);
1415 if (card->options.sniffer &&
1416 (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1417 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1418 if (card->read.state == CH_STATE_UP &&
1419 card->write.state == CH_STATE_UP &&
1420 card->state == CARD_STATE_UP)
1421 card->state = CARD_STATE_SOFTSETUP;
1422 if (card->state == CARD_STATE_SOFTSETUP) {
1423 qeth_l3_clear_ip_htable(card, 1);
1424 qeth_clear_ipacmd_list(card);
1425 card->state = CARD_STATE_HARDSETUP;
1427 if (card->state == CARD_STATE_HARDSETUP) {
1428 qeth_qdio_clear_card(card, 0);
1429 qeth_clear_qdio_buffers(card);
1430 qeth_clear_working_pool_list(card);
1431 card->state = CARD_STATE_DOWN;
1433 if (card->state == CARD_STATE_DOWN) {
1434 qeth_clear_cmd_buffers(&card->read);
1435 qeth_clear_cmd_buffers(&card->write);
1438 flush_workqueue(card->event_wq);
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");
1480 if (!card->options.sniffer) {
1481 spin_lock_bh(&card->mclock);
1483 qeth_l3_add_multicast_ipv4(card);
1484 qeth_l3_add_multicast_ipv6(card);
1486 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1487 switch (addr->disp_flag) {
1488 case QETH_DISP_ADDR_DELETE:
1489 rc = qeth_l3_deregister_addr_entry(card, addr);
1490 if (!rc || rc == -ENOENT) {
1491 hash_del(&addr->hnode);
1495 case QETH_DISP_ADDR_ADD:
1496 rc = qeth_l3_register_addr_entry(card, addr);
1497 if (rc && rc != -ENETDOWN) {
1498 hash_del(&addr->hnode);
1502 addr->ref_counter = 1;
1505 /* for next call to set_rx_mode(): */
1506 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1510 spin_unlock_bh(&card->mclock);
1512 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1515 qeth_l3_handle_promisc_mode(card);
1518 static int qeth_l3_arp_makerc(u16 rc)
1521 case IPA_RC_SUCCESS:
1523 case QETH_IPA_ARP_RC_NOTSUPP:
1524 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1526 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1528 case QETH_IPA_ARP_RC_Q_NO_DATA:
1535 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1538 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1540 qeth_setassparms_cb(card, reply, data);
1541 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1544 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1546 struct qeth_cmd_buffer *iob;
1549 QETH_CARD_TEXT(card, 3, "arpstnoe");
1552 * currently GuestLAN only supports the ARP assist function
1553 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1554 * thus we say EOPNOTSUPP for this ARP function
1556 if (card->info.guestlan)
1558 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1562 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1563 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 4,
1568 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1569 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1571 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1572 CARD_DEVID(card), rc);
1576 static __u32 get_arp_entry_size(struct qeth_card *card,
1577 struct qeth_arp_query_data *qdata,
1578 struct qeth_arp_entrytype *type, __u8 strip_entries)
1583 is_hsi = qdata->reply_bits == 5;
1584 if (type->ip == QETHARP_IP_ADDR_V4) {
1585 QETH_CARD_TEXT(card, 4, "arpev4");
1586 if (strip_entries) {
1587 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1588 sizeof(struct qeth_arp_qi_entry7_short);
1590 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1591 sizeof(struct qeth_arp_qi_entry7);
1593 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1594 QETH_CARD_TEXT(card, 4, "arpev6");
1595 if (strip_entries) {
1597 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1598 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1601 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1602 sizeof(struct qeth_arp_qi_entry7_ipv6);
1605 QETH_CARD_TEXT(card, 4, "arpinv");
1612 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1614 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1615 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1618 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1619 struct qeth_reply *reply, unsigned long data)
1621 struct qeth_ipa_cmd *cmd;
1622 struct qeth_arp_query_data *qdata;
1623 struct qeth_arp_query_info *qinfo;
1625 int entrybytes_done;
1627 __u8 do_strip_entries;
1629 QETH_CARD_TEXT(card, 3, "arpquecb");
1631 qinfo = (struct qeth_arp_query_info *) reply->param;
1632 cmd = (struct qeth_ipa_cmd *) data;
1633 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1634 if (cmd->hdr.return_code) {
1635 QETH_CARD_TEXT(card, 4, "arpcberr");
1636 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1637 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1639 if (cmd->data.setassparms.hdr.return_code) {
1640 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1641 QETH_CARD_TEXT(card, 4, "setaperr");
1642 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1643 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1645 qdata = &cmd->data.setassparms.data.query_arp;
1646 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1648 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1649 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1650 entrybytes_done = 0;
1651 for (e = 0; e < qdata->no_entries; ++e) {
1654 struct qeth_arp_entrytype *etype;
1656 cur_entry = &qdata->data + entrybytes_done;
1657 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1658 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1659 QETH_CARD_TEXT(card, 4, "pmis");
1660 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1663 esize = get_arp_entry_size(card, qdata, etype,
1665 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1669 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1670 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1671 memset(qinfo->udata, 0, 4);
1675 memcpy(qinfo->udata + qinfo->udata_offset,
1676 &qdata->data + entrybytes_done + stripped_bytes,
1678 entrybytes_done += esize + stripped_bytes;
1679 qinfo->udata_offset += esize;
1680 ++qinfo->no_entries;
1682 /* check if all replies received ... */
1683 if (cmd->data.setassparms.hdr.seq_no <
1684 cmd->data.setassparms.hdr.number_of_replies)
1686 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1687 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1688 /* keep STRIP_ENTRIES flag so the user program can distinguish
1689 * stripped entries from normal ones */
1690 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1691 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1692 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1693 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1697 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1698 enum qeth_prot_versions prot,
1699 struct qeth_arp_query_info *qinfo)
1701 struct qeth_cmd_buffer *iob;
1702 struct qeth_ipa_cmd *cmd;
1705 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1707 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1708 IPA_CMD_ASS_ARP_QUERY_INFO,
1709 sizeof(struct qeth_arp_query_data)
1714 cmd = __ipa_cmd(iob);
1715 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1716 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1718 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1719 CARD_DEVID(card), rc);
1723 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1725 struct qeth_arp_query_info qinfo = {0, };
1728 QETH_CARD_TEXT(card, 3, "arpquery");
1730 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1731 IPA_ARP_PROCESSING)) {
1732 QETH_CARD_TEXT(card, 3, "arpqnsup");
1736 /* get size of userspace buffer and mask_bits -> 6 bytes */
1737 if (copy_from_user(&qinfo, udata, 6)) {
1741 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1746 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1747 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1749 if (copy_to_user(udata, qinfo.udata, 4))
1753 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1754 /* fails in case of GuestLAN QDIO mode */
1755 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1757 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1758 QETH_CARD_TEXT(card, 4, "qactf");
1762 QETH_CARD_TEXT(card, 4, "qacts");
1770 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1771 struct qeth_arp_cache_entry *entry,
1772 enum qeth_arp_process_subcmds arp_cmd)
1774 struct qeth_arp_cache_entry *cmd_entry;
1775 struct qeth_cmd_buffer *iob;
1778 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1779 QETH_CARD_TEXT(card, 3, "arpadd");
1781 QETH_CARD_TEXT(card, 3, "arpdel");
1784 * currently GuestLAN only supports the ARP assist function
1785 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1786 * thus we say EOPNOTSUPP for this ARP function
1788 if (card->info.guestlan)
1790 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1794 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1795 sizeof(*cmd_entry), QETH_PROT_IPV4);
1799 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1800 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1801 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1802 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1804 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1805 arp_cmd, CARD_DEVID(card), rc);
1809 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1811 struct qeth_cmd_buffer *iob;
1814 QETH_CARD_TEXT(card, 3, "arpflush");
1817 * currently GuestLAN only supports the ARP assist function
1818 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1819 * thus we say EOPNOTSUPP for this ARP function
1821 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
1823 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1827 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1828 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1833 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1835 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1836 CARD_DEVID(card), rc);
1840 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1842 struct qeth_card *card = dev->ml_priv;
1843 struct qeth_arp_cache_entry arp_entry;
1844 enum qeth_arp_process_subcmds arp_cmd;
1848 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1849 if (!capable(CAP_NET_ADMIN)) {
1853 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1855 case SIOC_QETH_ARP_QUERY_INFO:
1856 if (!capable(CAP_NET_ADMIN)) {
1860 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1862 case SIOC_QETH_ARP_ADD_ENTRY:
1863 case SIOC_QETH_ARP_REMOVE_ENTRY:
1864 if (!capable(CAP_NET_ADMIN))
1866 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1869 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1870 IPA_CMD_ASS_ARP_ADD_ENTRY :
1871 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1872 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1873 case SIOC_QETH_ARP_FLUSH_CACHE:
1874 if (!capable(CAP_NET_ADMIN)) {
1878 rc = qeth_l3_arp_flush_cache(card);
1886 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1888 struct neighbour *n = NULL;
1889 struct dst_entry *dst;
1894 n = dst_neigh_lookup_skb(dst, skb);
1896 int cast_type = n->type;
1900 if ((cast_type == RTN_BROADCAST) ||
1901 (cast_type == RTN_MULTICAST) ||
1902 (cast_type == RTN_ANYCAST))
1908 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1909 switch (qeth_get_ip_version(skb)) {
1911 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1912 RTN_MULTICAST : RTN_UNICAST;
1914 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1915 RTN_MULTICAST : RTN_UNICAST;
1917 /* ... and MAC address */
1918 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1919 skb->dev->broadcast))
1920 return RTN_BROADCAST;
1921 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
1922 return RTN_MULTICAST;
1923 /* default to unicast */
1928 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1930 if (cast_type == RTN_MULTICAST)
1931 return QETH_CAST_MULTICAST;
1932 if (cast_type == RTN_ANYCAST)
1933 return QETH_CAST_ANYCAST;
1934 if (cast_type == RTN_BROADCAST)
1935 return QETH_CAST_BROADCAST;
1936 return QETH_CAST_UNICAST;
1939 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1940 struct qeth_hdr *hdr, struct sk_buff *skb,
1941 int ipv, int cast_type, unsigned int data_len)
1943 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1944 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1945 struct qeth_card *card = queue->card;
1947 hdr->hdr.l3.length = data_len;
1949 if (skb_is_gso(skb)) {
1950 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1952 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1954 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1955 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1956 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1957 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1958 iucv_trans_hdr(skb)->destUserID, 8);
1962 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1963 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1964 /* some HW requires combined L3+L4 csum offload: */
1966 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1967 QETH_TXQ_STAT_INC(queue, skbs_csum);
1971 if (ipv == 4 || IS_IQD(card)) {
1972 /* NETIF_F_HW_VLAN_CTAG_TX */
1973 if (skb_vlan_tag_present(skb)) {
1974 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1975 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1977 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1978 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1979 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1984 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
1985 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1986 skb->dev->broadcast))
1987 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
1989 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
1990 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
1994 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
1997 struct rtable *rt = skb_rtable(skb);
1999 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2000 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2004 const struct rt6_info *rt = skb_rt6_info(skb);
2006 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2007 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
2009 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
2011 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2012 if (card->info.type != QETH_CARD_TYPE_IQD)
2013 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2018 static void qeth_l3_fixup_headers(struct sk_buff *skb)
2020 struct iphdr *iph = ip_hdr(skb);
2022 /* this is safe, IPv6 traffic takes a different path */
2023 if (skb->ip_summed == CHECKSUM_PARTIAL)
2025 if (skb_is_gso(skb)) {
2027 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
2032 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2033 struct qeth_qdio_out_q *queue, int ipv, int cast_type)
2035 unsigned char eth_hdr[ETH_HLEN];
2036 unsigned int hw_hdr_len;
2039 /* re-use the L2 header area for the HW header: */
2040 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
2041 sizeof(struct qeth_hdr);
2042 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2045 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN);
2046 skb_pull(skb, ETH_HLEN);
2048 qeth_l3_fixup_headers(skb);
2049 rc = qeth_xmit(card, skb, queue, ipv, cast_type, qeth_l3_fill_header);
2051 /* roll back to ETH header */
2052 skb_push(skb, ETH_HLEN);
2053 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
2058 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2059 struct net_device *dev)
2061 int cast_type = qeth_l3_get_cast_type(skb);
2062 struct qeth_card *card = dev->ml_priv;
2063 int ipv = qeth_get_ip_version(skb);
2064 struct qeth_qdio_out_q *queue;
2065 int tx_bytes = skb->len;
2068 queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
2071 if (card->options.sniffer)
2073 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2074 (card->options.cq == QETH_CQ_ENABLED &&
2075 skb->protocol != htons(ETH_P_AF_IUCV)))
2079 if (card->state != CARD_STATE_UP) {
2080 QETH_TXQ_STAT_INC(queue, tx_carrier_errors);
2084 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable)
2087 netif_stop_queue(dev);
2089 if (ipv == 4 || IS_IQD(card))
2090 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type);
2092 rc = qeth_xmit(card, skb, queue, ipv, cast_type,
2093 qeth_l3_fill_header);
2096 QETH_TXQ_STAT_INC(queue, tx_packets);
2097 QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes);
2098 netif_wake_queue(dev);
2099 return NETDEV_TX_OK;
2100 } else if (rc == -EBUSY) {
2101 return NETDEV_TX_BUSY;
2102 } /* else fall through */
2105 QETH_TXQ_STAT_INC(queue, tx_dropped);
2106 QETH_TXQ_STAT_INC(queue, tx_errors);
2107 dev_kfree_skb_any(skb);
2108 netif_wake_queue(dev);
2109 return NETDEV_TX_OK;
2113 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2114 * NOARP on the netdevice is no option because it also turns off neighbor
2115 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2116 * arp resolution but we want the hard header (packet socket will work
2119 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2121 n->nud_state = NUD_NOARP;
2122 memcpy(n->ha, "FAKELL", 6);
2123 n->output = n->ops->connected_output;
2128 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2130 if (np->tbl->family == AF_INET)
2131 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2136 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2137 struct net_device *dev,
2138 netdev_features_t features)
2140 if (qeth_get_ip_version(skb) != 4)
2141 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2142 return qeth_features_check(skb, dev, features);
2145 static const struct net_device_ops qeth_l3_netdev_ops = {
2146 .ndo_open = qeth_open,
2147 .ndo_stop = qeth_stop,
2148 .ndo_get_stats64 = qeth_get_stats64,
2149 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2150 .ndo_validate_addr = eth_validate_addr,
2151 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2152 .ndo_do_ioctl = qeth_do_ioctl,
2153 .ndo_fix_features = qeth_fix_features,
2154 .ndo_set_features = qeth_set_features,
2155 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2156 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2157 .ndo_tx_timeout = qeth_tx_timeout,
2160 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2161 .ndo_open = qeth_open,
2162 .ndo_stop = qeth_stop,
2163 .ndo_get_stats64 = qeth_get_stats64,
2164 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2165 .ndo_features_check = qeth_l3_osa_features_check,
2166 .ndo_validate_addr = eth_validate_addr,
2167 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2168 .ndo_do_ioctl = qeth_do_ioctl,
2169 .ndo_fix_features = qeth_fix_features,
2170 .ndo_set_features = qeth_set_features,
2171 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2172 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2173 .ndo_tx_timeout = qeth_tx_timeout,
2174 .ndo_neigh_setup = qeth_l3_neigh_setup,
2177 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
2179 unsigned int headroom;
2182 if (card->info.type == QETH_CARD_TYPE_OSD ||
2183 card->info.type == QETH_CARD_TYPE_OSX) {
2184 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2185 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2186 pr_info("qeth_l3: ignoring TR device\n");
2190 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2192 /*IPv6 address autoconfiguration stuff*/
2193 qeth_l3_get_unique_id(card);
2194 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2195 card->dev->dev_id = card->info.unique_id & 0xffff;
2197 if (!card->info.guestlan) {
2198 card->dev->features |= NETIF_F_SG;
2199 card->dev->hw_features |= NETIF_F_TSO |
2200 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2201 card->dev->vlan_features |= NETIF_F_TSO |
2202 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2205 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2206 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2207 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2209 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2210 card->dev->hw_features |= NETIF_F_TSO6;
2211 card->dev->vlan_features |= NETIF_F_TSO6;
2214 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2215 if (card->dev->hw_features & NETIF_F_TSO6)
2216 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2217 else if (card->dev->hw_features & NETIF_F_TSO)
2218 headroom = sizeof(struct qeth_hdr_tso);
2220 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2221 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2222 card->dev->flags |= IFF_NOARP;
2223 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2224 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2226 rc = qeth_l3_iqd_read_initial_mac(card);
2232 card->dev->needed_headroom = headroom;
2233 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2234 NETIF_F_HW_VLAN_CTAG_RX |
2235 NETIF_F_HW_VLAN_CTAG_FILTER;
2237 netif_keep_dst(card->dev);
2238 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2239 netif_set_gso_max_size(card->dev,
2240 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2242 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2243 rc = register_netdev(card->dev);
2244 if (!rc && carrier_ok)
2245 netif_carrier_on(card->dev);
2249 card->dev->netdev_ops = NULL;
2253 static const struct device_type qeth_l3_devtype = {
2254 .name = "qeth_layer3",
2255 .groups = qeth_l3_attr_groups,
2258 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2260 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2263 if (gdev->dev.type == &qeth_generic_devtype) {
2264 rc = qeth_l3_create_device_attributes(&gdev->dev);
2268 hash_init(card->ip_htable);
2269 hash_init(card->ip_mc_htable);
2270 card->info.hwtrap = 0;
2274 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2276 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2278 if (cgdev->dev.type == &qeth_generic_devtype)
2279 qeth_l3_remove_device_attributes(&cgdev->dev);
2281 qeth_set_allowed_threads(card, 0, 1);
2282 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2284 if (cgdev->state == CCWGROUP_ONLINE)
2285 qeth_l3_set_offline(cgdev);
2287 cancel_work_sync(&card->close_dev_work);
2288 if (qeth_netdev_is_registered(card->dev))
2289 unregister_netdev(card->dev);
2290 qeth_l3_clear_ip_htable(card, 0);
2291 qeth_l3_clear_ipato_list(card);
2294 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2296 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2297 struct net_device *dev = card->dev;
2301 mutex_lock(&card->discipline_mutex);
2302 mutex_lock(&card->conf_mutex);
2303 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2304 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2306 rc = qeth_core_hardsetup_card(card, &carrier_ok);
2308 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2313 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2314 if (card->info.hwtrap &&
2315 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2316 card->info.hwtrap = 0;
2318 card->info.hwtrap = 0;
2320 card->state = CARD_STATE_HARDSETUP;
2321 qeth_print_status_message(card);
2324 QETH_DBF_TEXT(SETUP, 2, "softsetp");
2326 rc = qeth_l3_setadapter_parms(card);
2328 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2329 if (!card->options.sniffer) {
2330 rc = qeth_l3_start_ipassists(card);
2332 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2335 rc = qeth_l3_setrouting_v4(card);
2337 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2338 rc = qeth_l3_setrouting_v6(card);
2340 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2343 rc = qeth_init_qdio_queues(card);
2345 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2349 card->state = CARD_STATE_SOFTSETUP;
2351 qeth_set_allowed_threads(card, 0xffffffff, 0);
2352 qeth_l3_recover_ip(card);
2354 if (!qeth_netdev_is_registered(dev)) {
2355 rc = qeth_l3_setup_netdev(card, carrier_ok);
2361 netif_carrier_on(dev);
2363 netif_carrier_off(dev);
2365 netif_device_attach(dev);
2366 qeth_enable_hw_features(dev);
2368 if (card->info.open_when_online) {
2369 card->info.open_when_online = 0;
2370 dev_open(dev, NULL);
2374 qeth_trace_features(card);
2375 /* let user_space know that device is online */
2376 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2377 mutex_unlock(&card->conf_mutex);
2378 mutex_unlock(&card->discipline_mutex);
2381 qeth_l3_stop_card(card);
2382 ccw_device_set_offline(CARD_DDEV(card));
2383 ccw_device_set_offline(CARD_WDEV(card));
2384 ccw_device_set_offline(CARD_RDEV(card));
2385 qdio_free(CARD_DDEV(card));
2386 card->state = CARD_STATE_DOWN;
2388 mutex_unlock(&card->conf_mutex);
2389 mutex_unlock(&card->discipline_mutex);
2393 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2396 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2397 int rc = 0, rc2 = 0, rc3 = 0;
2399 mutex_lock(&card->discipline_mutex);
2400 mutex_lock(&card->conf_mutex);
2401 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2402 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2404 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2405 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2406 card->info.hwtrap = 1;
2410 card->info.open_when_online = card->dev->flags & IFF_UP;
2411 dev_close(card->dev);
2412 netif_device_detach(card->dev);
2413 netif_carrier_off(card->dev);
2416 qeth_l3_stop_card(card);
2417 if (card->options.cq == QETH_CQ_ENABLED) {
2419 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2422 rc = ccw_device_set_offline(CARD_DDEV(card));
2423 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2424 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2426 rc = (rc2) ? rc2 : rc3;
2428 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2429 qdio_free(CARD_DDEV(card));
2431 /* let user_space know that device is offline */
2432 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2433 mutex_unlock(&card->conf_mutex);
2434 mutex_unlock(&card->discipline_mutex);
2438 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2440 return __qeth_l3_set_offline(cgdev, 0);
2443 static int qeth_l3_recover(void *ptr)
2445 struct qeth_card *card;
2448 card = (struct qeth_card *) ptr;
2449 QETH_CARD_TEXT(card, 2, "recover1");
2450 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2451 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2453 QETH_CARD_TEXT(card, 2, "recover2");
2454 dev_warn(&card->gdev->dev,
2455 "A recovery process has been started for the device\n");
2456 __qeth_l3_set_offline(card->gdev, 1);
2457 rc = qeth_l3_set_online(card->gdev);
2459 dev_info(&card->gdev->dev,
2460 "Device successfully recovered!\n");
2462 qeth_close_dev(card);
2463 dev_warn(&card->gdev->dev, "The qeth device driver "
2464 "failed to recover an error on the device\n");
2466 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2467 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2471 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2473 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2475 qeth_set_allowed_threads(card, 0, 1);
2476 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2477 if (gdev->state == CCWGROUP_OFFLINE)
2479 if (card->state == CARD_STATE_UP) {
2480 if (card->info.hwtrap)
2481 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2482 __qeth_l3_set_offline(card->gdev, 1);
2484 __qeth_l3_set_offline(card->gdev, 0);
2488 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2490 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2493 rc = qeth_l3_set_online(gdev);
2495 qeth_set_allowed_threads(card, 0xffffffff, 0);
2497 dev_warn(&card->gdev->dev, "The qeth device driver "
2498 "failed to recover an error on the device\n");
2502 /* Returns zero if the command is successfully "consumed" */
2503 static int qeth_l3_control_event(struct qeth_card *card,
2504 struct qeth_ipa_cmd *cmd)
2509 struct qeth_discipline qeth_l3_discipline = {
2510 .devtype = &qeth_l3_devtype,
2511 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2512 .recover = qeth_l3_recover,
2513 .setup = qeth_l3_probe_device,
2514 .remove = qeth_l3_remove_device,
2515 .set_online = qeth_l3_set_online,
2516 .set_offline = qeth_l3_set_offline,
2517 .freeze = qeth_l3_pm_suspend,
2518 .thaw = qeth_l3_pm_resume,
2519 .restore = qeth_l3_pm_resume,
2520 .do_ioctl = qeth_l3_do_ioctl,
2521 .control_event_handler = qeth_l3_control_event,
2523 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2525 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2526 struct qeth_ipaddr *addr,
2527 unsigned long event)
2531 spin_lock_bh(&card->ip_lock);
2532 qeth_l3_add_ip(card, addr);
2533 spin_unlock_bh(&card->ip_lock);
2536 spin_lock_bh(&card->ip_lock);
2537 qeth_l3_delete_ip(card, addr);
2538 spin_unlock_bh(&card->ip_lock);
2545 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2547 if (is_vlan_dev(dev))
2548 dev = vlan_dev_real_dev(dev);
2549 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2550 dev->netdev_ops == &qeth_l3_netdev_ops)
2551 return (struct qeth_card *) dev->ml_priv;
2555 static int qeth_l3_ip_event(struct notifier_block *this,
2556 unsigned long event, void *ptr)
2559 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2560 struct net_device *dev = ifa->ifa_dev->dev;
2561 struct qeth_ipaddr addr;
2562 struct qeth_card *card;
2564 if (dev_net(dev) != &init_net)
2567 card = qeth_l3_get_card_from_dev(dev);
2570 QETH_CARD_TEXT(card, 3, "ipevent");
2572 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2573 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2574 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2576 return qeth_l3_handle_ip_event(card, &addr, event);
2579 static struct notifier_block qeth_l3_ip_notifier = {
2584 static int qeth_l3_ip6_event(struct notifier_block *this,
2585 unsigned long event, void *ptr)
2587 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2588 struct net_device *dev = ifa->idev->dev;
2589 struct qeth_ipaddr addr;
2590 struct qeth_card *card;
2592 card = qeth_l3_get_card_from_dev(dev);
2595 QETH_CARD_TEXT(card, 3, "ip6event");
2596 if (!qeth_is_supported(card, IPA_IPV6))
2599 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
2600 addr.u.a6.addr = ifa->addr;
2601 addr.u.a6.pfxlen = ifa->prefix_len;
2603 return qeth_l3_handle_ip_event(card, &addr, event);
2606 static struct notifier_block qeth_l3_ip6_notifier = {
2611 static int qeth_l3_register_notifiers(void)
2615 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2616 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2619 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2621 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2627 static void qeth_l3_unregister_notifiers(void)
2629 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2630 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2631 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2634 static int __init qeth_l3_init(void)
2636 pr_info("register layer 3 discipline\n");
2637 return qeth_l3_register_notifiers();
2640 static void __exit qeth_l3_exit(void)
2642 qeth_l3_unregister_notifiers();
2643 pr_info("unregister layer 3 discipline\n");
2646 module_init(qeth_l3_init);
2647 module_exit(qeth_l3_exit);
2648 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2649 MODULE_DESCRIPTION("qeth layer 3 discipline");
2650 MODULE_LICENSE("GPL");