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, int recovery_mode)
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)) {
1422 qeth_stop(card->dev);
1425 dev_close(card->dev);
1428 card->state = CARD_STATE_SOFTSETUP;
1430 if (card->state == CARD_STATE_SOFTSETUP) {
1431 qeth_l3_clear_ip_htable(card, 1);
1432 qeth_clear_ipacmd_list(card);
1433 card->state = CARD_STATE_HARDSETUP;
1435 if (card->state == CARD_STATE_HARDSETUP) {
1436 qeth_qdio_clear_card(card, 0);
1437 qeth_clear_qdio_buffers(card);
1438 qeth_clear_working_pool_list(card);
1439 card->state = CARD_STATE_DOWN;
1441 if (card->state == CARD_STATE_DOWN) {
1442 qeth_clear_cmd_buffers(&card->read);
1443 qeth_clear_cmd_buffers(&card->write);
1446 flush_workqueue(card->event_wq);
1450 * test for and Switch promiscuous mode (on or off)
1451 * either for guestlan or HiperSocket Sniffer
1454 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1456 struct net_device *dev = card->dev;
1458 if (((dev->flags & IFF_PROMISC) &&
1459 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1460 (!(dev->flags & IFF_PROMISC) &&
1461 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1464 if (card->info.guestlan) { /* Guestlan trace */
1465 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1466 qeth_setadp_promisc_mode(card);
1467 } else if (card->options.sniffer && /* HiperSockets trace */
1468 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1469 if (dev->flags & IFF_PROMISC) {
1470 QETH_CARD_TEXT(card, 3, "+promisc");
1471 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1473 QETH_CARD_TEXT(card, 3, "-promisc");
1474 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1479 static void qeth_l3_set_rx_mode(struct net_device *dev)
1481 struct qeth_card *card = dev->ml_priv;
1482 struct qeth_ipaddr *addr;
1483 struct hlist_node *tmp;
1486 QETH_CARD_TEXT(card, 3, "setmulti");
1488 if (!card->options.sniffer) {
1489 spin_lock_bh(&card->mclock);
1491 qeth_l3_add_multicast_ipv4(card);
1492 qeth_l3_add_multicast_ipv6(card);
1494 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1495 switch (addr->disp_flag) {
1496 case QETH_DISP_ADDR_DELETE:
1497 rc = qeth_l3_deregister_addr_entry(card, addr);
1498 if (!rc || rc == -ENOENT) {
1499 hash_del(&addr->hnode);
1503 case QETH_DISP_ADDR_ADD:
1504 rc = qeth_l3_register_addr_entry(card, addr);
1505 if (rc && rc != -ENETDOWN) {
1506 hash_del(&addr->hnode);
1510 addr->ref_counter = 1;
1513 /* for next call to set_rx_mode(): */
1514 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1518 spin_unlock_bh(&card->mclock);
1520 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1523 qeth_l3_handle_promisc_mode(card);
1526 static int qeth_l3_arp_makerc(u16 rc)
1529 case IPA_RC_SUCCESS:
1531 case QETH_IPA_ARP_RC_NOTSUPP:
1532 case QETH_IPA_ARP_RC_Q_NOTSUPP:
1534 case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1536 case QETH_IPA_ARP_RC_Q_NO_DATA:
1543 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1546 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1548 qeth_setassparms_cb(card, reply, data);
1549 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1552 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1554 struct qeth_cmd_buffer *iob;
1557 QETH_CARD_TEXT(card, 3, "arpstnoe");
1560 * currently GuestLAN only supports the ARP assist function
1561 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1562 * thus we say EOPNOTSUPP for this ARP function
1564 if (card->info.guestlan)
1566 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1570 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1571 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 4,
1576 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1577 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1579 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1580 CARD_DEVID(card), rc);
1584 static __u32 get_arp_entry_size(struct qeth_card *card,
1585 struct qeth_arp_query_data *qdata,
1586 struct qeth_arp_entrytype *type, __u8 strip_entries)
1591 is_hsi = qdata->reply_bits == 5;
1592 if (type->ip == QETHARP_IP_ADDR_V4) {
1593 QETH_CARD_TEXT(card, 4, "arpev4");
1594 if (strip_entries) {
1595 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1596 sizeof(struct qeth_arp_qi_entry7_short);
1598 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1599 sizeof(struct qeth_arp_qi_entry7);
1601 } else if (type->ip == QETHARP_IP_ADDR_V6) {
1602 QETH_CARD_TEXT(card, 4, "arpev6");
1603 if (strip_entries) {
1605 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1606 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1609 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1610 sizeof(struct qeth_arp_qi_entry7_ipv6);
1613 QETH_CARD_TEXT(card, 4, "arpinv");
1620 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1622 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1623 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1626 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1627 struct qeth_reply *reply, unsigned long data)
1629 struct qeth_ipa_cmd *cmd;
1630 struct qeth_arp_query_data *qdata;
1631 struct qeth_arp_query_info *qinfo;
1633 int entrybytes_done;
1635 __u8 do_strip_entries;
1637 QETH_CARD_TEXT(card, 3, "arpquecb");
1639 qinfo = (struct qeth_arp_query_info *) reply->param;
1640 cmd = (struct qeth_ipa_cmd *) data;
1641 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1642 if (cmd->hdr.return_code) {
1643 QETH_CARD_TEXT(card, 4, "arpcberr");
1644 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1645 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1647 if (cmd->data.setassparms.hdr.return_code) {
1648 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1649 QETH_CARD_TEXT(card, 4, "setaperr");
1650 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1651 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1653 qdata = &cmd->data.setassparms.data.query_arp;
1654 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1656 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1657 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1658 entrybytes_done = 0;
1659 for (e = 0; e < qdata->no_entries; ++e) {
1662 struct qeth_arp_entrytype *etype;
1664 cur_entry = &qdata->data + entrybytes_done;
1665 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1666 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1667 QETH_CARD_TEXT(card, 4, "pmis");
1668 QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1671 esize = get_arp_entry_size(card, qdata, etype,
1673 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1677 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1678 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1679 memset(qinfo->udata, 0, 4);
1683 memcpy(qinfo->udata + qinfo->udata_offset,
1684 &qdata->data + entrybytes_done + stripped_bytes,
1686 entrybytes_done += esize + stripped_bytes;
1687 qinfo->udata_offset += esize;
1688 ++qinfo->no_entries;
1690 /* check if all replies received ... */
1691 if (cmd->data.setassparms.hdr.seq_no <
1692 cmd->data.setassparms.hdr.number_of_replies)
1694 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1695 memcpy(qinfo->udata, &qinfo->no_entries, 4);
1696 /* keep STRIP_ENTRIES flag so the user program can distinguish
1697 * stripped entries from normal ones */
1698 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1699 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1700 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1701 QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1705 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1706 enum qeth_prot_versions prot,
1707 struct qeth_arp_query_info *qinfo)
1709 struct qeth_cmd_buffer *iob;
1710 struct qeth_ipa_cmd *cmd;
1713 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1715 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1716 IPA_CMD_ASS_ARP_QUERY_INFO,
1717 sizeof(struct qeth_arp_query_data)
1722 cmd = __ipa_cmd(iob);
1723 cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1724 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1726 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1727 CARD_DEVID(card), rc);
1731 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1733 struct qeth_arp_query_info qinfo = {0, };
1736 QETH_CARD_TEXT(card, 3, "arpquery");
1738 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1739 IPA_ARP_PROCESSING)) {
1740 QETH_CARD_TEXT(card, 3, "arpqnsup");
1744 /* get size of userspace buffer and mask_bits -> 6 bytes */
1745 if (copy_from_user(&qinfo, udata, 6)) {
1749 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1754 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1755 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1757 if (copy_to_user(udata, qinfo.udata, 4))
1761 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1762 /* fails in case of GuestLAN QDIO mode */
1763 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1765 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1766 QETH_CARD_TEXT(card, 4, "qactf");
1770 QETH_CARD_TEXT(card, 4, "qacts");
1778 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1779 struct qeth_arp_cache_entry *entry,
1780 enum qeth_arp_process_subcmds arp_cmd)
1782 struct qeth_arp_cache_entry *cmd_entry;
1783 struct qeth_cmd_buffer *iob;
1786 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1787 QETH_CARD_TEXT(card, 3, "arpadd");
1789 QETH_CARD_TEXT(card, 3, "arpdel");
1792 * currently GuestLAN only supports the ARP assist function
1793 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1794 * thus we say EOPNOTSUPP for this ARP function
1796 if (card->info.guestlan)
1798 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1802 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1803 sizeof(*cmd_entry), QETH_PROT_IPV4);
1807 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1808 ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1809 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1810 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1812 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1813 arp_cmd, CARD_DEVID(card), rc);
1817 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1819 struct qeth_cmd_buffer *iob;
1822 QETH_CARD_TEXT(card, 3, "arpflush");
1825 * currently GuestLAN only supports the ARP assist function
1826 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1827 * thus we say EOPNOTSUPP for this ARP function
1829 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
1831 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1835 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1836 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1841 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1843 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1844 CARD_DEVID(card), rc);
1848 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1850 struct qeth_card *card = dev->ml_priv;
1851 struct qeth_arp_cache_entry arp_entry;
1852 enum qeth_arp_process_subcmds arp_cmd;
1856 case SIOC_QETH_ARP_SET_NO_ENTRIES:
1857 if (!capable(CAP_NET_ADMIN)) {
1861 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1863 case SIOC_QETH_ARP_QUERY_INFO:
1864 if (!capable(CAP_NET_ADMIN)) {
1868 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1870 case SIOC_QETH_ARP_ADD_ENTRY:
1871 case SIOC_QETH_ARP_REMOVE_ENTRY:
1872 if (!capable(CAP_NET_ADMIN))
1874 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1877 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1878 IPA_CMD_ASS_ARP_ADD_ENTRY :
1879 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1880 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1881 case SIOC_QETH_ARP_FLUSH_CACHE:
1882 if (!capable(CAP_NET_ADMIN)) {
1886 rc = qeth_l3_arp_flush_cache(card);
1894 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1896 struct neighbour *n = NULL;
1897 struct dst_entry *dst;
1902 n = dst_neigh_lookup_skb(dst, skb);
1904 int cast_type = n->type;
1908 if ((cast_type == RTN_BROADCAST) ||
1909 (cast_type == RTN_MULTICAST) ||
1910 (cast_type == RTN_ANYCAST))
1916 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1917 switch (qeth_get_ip_version(skb)) {
1919 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1920 RTN_MULTICAST : RTN_UNICAST;
1922 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1923 RTN_MULTICAST : RTN_UNICAST;
1925 /* ... and MAC address */
1926 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1927 skb->dev->broadcast))
1928 return RTN_BROADCAST;
1929 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
1930 return RTN_MULTICAST;
1931 /* default to unicast */
1936 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1938 if (cast_type == RTN_MULTICAST)
1939 return QETH_CAST_MULTICAST;
1940 if (cast_type == RTN_ANYCAST)
1941 return QETH_CAST_ANYCAST;
1942 if (cast_type == RTN_BROADCAST)
1943 return QETH_CAST_BROADCAST;
1944 return QETH_CAST_UNICAST;
1947 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1948 struct qeth_hdr *hdr, struct sk_buff *skb,
1949 int ipv, int cast_type, unsigned int data_len)
1951 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1952 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1953 struct qeth_card *card = queue->card;
1955 hdr->hdr.l3.length = data_len;
1957 if (skb_is_gso(skb)) {
1958 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1960 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1962 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1963 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1964 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1965 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1966 iucv_trans_hdr(skb)->destUserID, 8);
1970 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1971 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1972 /* some HW requires combined L3+L4 csum offload: */
1974 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1975 QETH_TXQ_STAT_INC(queue, skbs_csum);
1979 if (ipv == 4 || IS_IQD(card)) {
1980 /* NETIF_F_HW_VLAN_CTAG_TX */
1981 if (skb_vlan_tag_present(skb)) {
1982 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1983 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1985 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1986 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1987 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1992 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
1993 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
1994 skb->dev->broadcast))
1995 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
1997 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
1998 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
2002 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
2005 struct rtable *rt = skb_rtable(skb);
2007 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2008 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2012 const struct rt6_info *rt = skb_rt6_info(skb);
2014 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2015 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
2017 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
2019 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2020 if (card->info.type != QETH_CARD_TYPE_IQD)
2021 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2026 static void qeth_l3_fixup_headers(struct sk_buff *skb)
2028 struct iphdr *iph = ip_hdr(skb);
2030 /* this is safe, IPv6 traffic takes a different path */
2031 if (skb->ip_summed == CHECKSUM_PARTIAL)
2033 if (skb_is_gso(skb)) {
2035 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
2040 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2041 struct qeth_qdio_out_q *queue, int ipv, int cast_type)
2043 unsigned char eth_hdr[ETH_HLEN];
2044 unsigned int hw_hdr_len;
2047 /* re-use the L2 header area for the HW header: */
2048 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
2049 sizeof(struct qeth_hdr);
2050 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2053 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN);
2054 skb_pull(skb, ETH_HLEN);
2056 qeth_l3_fixup_headers(skb);
2057 rc = qeth_xmit(card, skb, queue, ipv, cast_type, qeth_l3_fill_header);
2059 /* roll back to ETH header */
2060 skb_push(skb, ETH_HLEN);
2061 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
2066 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2067 struct net_device *dev)
2069 int cast_type = qeth_l3_get_cast_type(skb);
2070 struct qeth_card *card = dev->ml_priv;
2071 int ipv = qeth_get_ip_version(skb);
2072 struct qeth_qdio_out_q *queue;
2073 int tx_bytes = skb->len;
2076 queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
2079 if (card->options.sniffer)
2081 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2082 (card->options.cq == QETH_CQ_ENABLED &&
2083 skb->protocol != htons(ETH_P_AF_IUCV)))
2087 if (card->state != CARD_STATE_UP) {
2088 QETH_TXQ_STAT_INC(queue, tx_carrier_errors);
2092 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable)
2095 netif_stop_queue(dev);
2097 if (ipv == 4 || IS_IQD(card))
2098 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type);
2100 rc = qeth_xmit(card, skb, queue, ipv, cast_type,
2101 qeth_l3_fill_header);
2104 QETH_TXQ_STAT_INC(queue, tx_packets);
2105 QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes);
2106 netif_wake_queue(dev);
2107 return NETDEV_TX_OK;
2108 } else if (rc == -EBUSY) {
2109 return NETDEV_TX_BUSY;
2110 } /* else fall through */
2113 QETH_TXQ_STAT_INC(queue, tx_dropped);
2114 QETH_TXQ_STAT_INC(queue, tx_errors);
2115 dev_kfree_skb_any(skb);
2116 netif_wake_queue(dev);
2117 return NETDEV_TX_OK;
2121 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2122 * NOARP on the netdevice is no option because it also turns off neighbor
2123 * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2124 * arp resolution but we want the hard header (packet socket will work
2127 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2129 n->nud_state = NUD_NOARP;
2130 memcpy(n->ha, "FAKELL", 6);
2131 n->output = n->ops->connected_output;
2136 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2138 if (np->tbl->family == AF_INET)
2139 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2144 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2145 struct net_device *dev,
2146 netdev_features_t features)
2148 if (qeth_get_ip_version(skb) != 4)
2149 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2150 return qeth_features_check(skb, dev, features);
2153 static const struct net_device_ops qeth_l3_netdev_ops = {
2154 .ndo_open = qeth_open,
2155 .ndo_stop = qeth_stop,
2156 .ndo_get_stats64 = qeth_get_stats64,
2157 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2158 .ndo_validate_addr = eth_validate_addr,
2159 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2160 .ndo_do_ioctl = qeth_do_ioctl,
2161 .ndo_fix_features = qeth_fix_features,
2162 .ndo_set_features = qeth_set_features,
2163 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2164 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2165 .ndo_tx_timeout = qeth_tx_timeout,
2168 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2169 .ndo_open = qeth_open,
2170 .ndo_stop = qeth_stop,
2171 .ndo_get_stats64 = qeth_get_stats64,
2172 .ndo_start_xmit = qeth_l3_hard_start_xmit,
2173 .ndo_features_check = qeth_l3_osa_features_check,
2174 .ndo_validate_addr = eth_validate_addr,
2175 .ndo_set_rx_mode = qeth_l3_set_rx_mode,
2176 .ndo_do_ioctl = qeth_do_ioctl,
2177 .ndo_fix_features = qeth_fix_features,
2178 .ndo_set_features = qeth_set_features,
2179 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
2180 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
2181 .ndo_tx_timeout = qeth_tx_timeout,
2182 .ndo_neigh_setup = qeth_l3_neigh_setup,
2185 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
2187 unsigned int headroom;
2190 if (card->info.type == QETH_CARD_TYPE_OSD ||
2191 card->info.type == QETH_CARD_TYPE_OSX) {
2192 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2193 (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2194 pr_info("qeth_l3: ignoring TR device\n");
2198 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2200 /*IPv6 address autoconfiguration stuff*/
2201 qeth_l3_get_unique_id(card);
2202 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2203 card->dev->dev_id = card->info.unique_id & 0xffff;
2205 if (!card->info.guestlan) {
2206 card->dev->features |= NETIF_F_SG;
2207 card->dev->hw_features |= NETIF_F_TSO |
2208 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2209 card->dev->vlan_features |= NETIF_F_TSO |
2210 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2213 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2214 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2215 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2217 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2218 card->dev->hw_features |= NETIF_F_TSO6;
2219 card->dev->vlan_features |= NETIF_F_TSO6;
2222 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2223 if (card->dev->hw_features & NETIF_F_TSO6)
2224 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2225 else if (card->dev->hw_features & NETIF_F_TSO)
2226 headroom = sizeof(struct qeth_hdr_tso);
2228 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2229 } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2230 card->dev->flags |= IFF_NOARP;
2231 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2232 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2234 rc = qeth_l3_iqd_read_initial_mac(card);
2240 card->dev->needed_headroom = headroom;
2241 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2242 NETIF_F_HW_VLAN_CTAG_RX |
2243 NETIF_F_HW_VLAN_CTAG_FILTER;
2245 netif_keep_dst(card->dev);
2246 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2247 netif_set_gso_max_size(card->dev,
2248 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2250 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2251 rc = register_netdev(card->dev);
2252 if (!rc && carrier_ok)
2253 netif_carrier_on(card->dev);
2257 card->dev->netdev_ops = NULL;
2261 static const struct device_type qeth_l3_devtype = {
2262 .name = "qeth_layer3",
2263 .groups = qeth_l3_attr_groups,
2266 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2268 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2271 if (gdev->dev.type == &qeth_generic_devtype) {
2272 rc = qeth_l3_create_device_attributes(&gdev->dev);
2276 hash_init(card->ip_htable);
2277 hash_init(card->ip_mc_htable);
2278 card->info.hwtrap = 0;
2282 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2284 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2286 if (cgdev->dev.type == &qeth_generic_devtype)
2287 qeth_l3_remove_device_attributes(&cgdev->dev);
2289 qeth_set_allowed_threads(card, 0, 1);
2290 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2292 if (cgdev->state == CCWGROUP_ONLINE)
2293 qeth_l3_set_offline(cgdev);
2295 cancel_work_sync(&card->close_dev_work);
2296 if (qeth_netdev_is_registered(card->dev))
2297 unregister_netdev(card->dev);
2298 qeth_l3_clear_ip_htable(card, 0);
2299 qeth_l3_clear_ipato_list(card);
2302 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2304 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2305 struct net_device *dev = card->dev;
2307 enum qeth_card_states recover_flag;
2310 mutex_lock(&card->discipline_mutex);
2311 mutex_lock(&card->conf_mutex);
2312 QETH_DBF_TEXT(SETUP, 2, "setonlin");
2313 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2315 recover_flag = card->state;
2316 rc = qeth_core_hardsetup_card(card, &carrier_ok);
2318 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2323 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2324 if (card->info.hwtrap &&
2325 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2326 card->info.hwtrap = 0;
2328 card->info.hwtrap = 0;
2330 card->state = CARD_STATE_HARDSETUP;
2331 qeth_print_status_message(card);
2334 QETH_DBF_TEXT(SETUP, 2, "softsetp");
2336 rc = qeth_l3_setadapter_parms(card);
2338 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2339 if (!card->options.sniffer) {
2340 rc = qeth_l3_start_ipassists(card);
2342 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2345 rc = qeth_l3_setrouting_v4(card);
2347 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2348 rc = qeth_l3_setrouting_v6(card);
2350 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2353 rc = qeth_init_qdio_queues(card);
2355 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2359 card->state = CARD_STATE_SOFTSETUP;
2361 qeth_set_allowed_threads(card, 0xffffffff, 0);
2362 qeth_l3_recover_ip(card);
2364 if (!qeth_netdev_is_registered(dev)) {
2365 rc = qeth_l3_setup_netdev(card, carrier_ok);
2371 netif_carrier_on(dev);
2373 netif_carrier_off(dev);
2375 netif_device_attach(dev);
2376 qeth_enable_hw_features(dev);
2378 if (recover_flag == CARD_STATE_RECOVER) {
2379 if (recovery_mode) {
2381 qeth_l3_set_rx_mode(dev);
2383 dev_open(dev, NULL);
2388 qeth_trace_features(card);
2389 /* let user_space know that device is online */
2390 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2391 mutex_unlock(&card->conf_mutex);
2392 mutex_unlock(&card->discipline_mutex);
2395 qeth_l3_stop_card(card, 0);
2396 ccw_device_set_offline(CARD_DDEV(card));
2397 ccw_device_set_offline(CARD_WDEV(card));
2398 ccw_device_set_offline(CARD_RDEV(card));
2399 qdio_free(CARD_DDEV(card));
2400 if (recover_flag == CARD_STATE_RECOVER)
2401 card->state = CARD_STATE_RECOVER;
2403 card->state = CARD_STATE_DOWN;
2404 mutex_unlock(&card->conf_mutex);
2405 mutex_unlock(&card->discipline_mutex);
2409 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2411 return __qeth_l3_set_online(gdev, 0);
2414 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2417 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2418 int rc = 0, rc2 = 0, rc3 = 0;
2419 enum qeth_card_states recover_flag;
2421 mutex_lock(&card->discipline_mutex);
2422 mutex_lock(&card->conf_mutex);
2423 QETH_DBF_TEXT(SETUP, 3, "setoffl");
2424 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2427 netif_device_detach(card->dev);
2428 netif_carrier_off(card->dev);
2431 recover_flag = card->state;
2432 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2433 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2434 card->info.hwtrap = 1;
2436 qeth_l3_stop_card(card, recovery_mode);
2437 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
2439 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2442 rc = ccw_device_set_offline(CARD_DDEV(card));
2443 rc2 = ccw_device_set_offline(CARD_WDEV(card));
2444 rc3 = ccw_device_set_offline(CARD_RDEV(card));
2446 rc = (rc2) ? rc2 : rc3;
2448 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2449 qdio_free(CARD_DDEV(card));
2450 if (recover_flag == CARD_STATE_UP)
2451 card->state = CARD_STATE_RECOVER;
2452 /* let user_space know that device is offline */
2453 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2454 mutex_unlock(&card->conf_mutex);
2455 mutex_unlock(&card->discipline_mutex);
2459 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2461 return __qeth_l3_set_offline(cgdev, 0);
2464 static int qeth_l3_recover(void *ptr)
2466 struct qeth_card *card;
2469 card = (struct qeth_card *) ptr;
2470 QETH_CARD_TEXT(card, 2, "recover1");
2471 QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2472 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2474 QETH_CARD_TEXT(card, 2, "recover2");
2475 dev_warn(&card->gdev->dev,
2476 "A recovery process has been started for the device\n");
2477 __qeth_l3_set_offline(card->gdev, 1);
2478 rc = __qeth_l3_set_online(card->gdev, 1);
2480 dev_info(&card->gdev->dev,
2481 "Device successfully recovered!\n");
2483 qeth_close_dev(card);
2484 dev_warn(&card->gdev->dev, "The qeth device driver "
2485 "failed to recover an error on the device\n");
2487 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2488 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2492 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2494 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2496 qeth_set_allowed_threads(card, 0, 1);
2497 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2498 if (gdev->state == CCWGROUP_OFFLINE)
2500 if (card->state == CARD_STATE_UP) {
2501 if (card->info.hwtrap)
2502 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2503 __qeth_l3_set_offline(card->gdev, 1);
2505 __qeth_l3_set_offline(card->gdev, 0);
2509 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2511 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2514 if (card->state == CARD_STATE_RECOVER) {
2515 rc = __qeth_l3_set_online(card->gdev, 1);
2518 dev_close(card->dev);
2522 rc = __qeth_l3_set_online(card->gdev, 0);
2524 qeth_set_allowed_threads(card, 0xffffffff, 0);
2526 dev_warn(&card->gdev->dev, "The qeth device driver "
2527 "failed to recover an error on the device\n");
2531 /* Returns zero if the command is successfully "consumed" */
2532 static int qeth_l3_control_event(struct qeth_card *card,
2533 struct qeth_ipa_cmd *cmd)
2538 struct qeth_discipline qeth_l3_discipline = {
2539 .devtype = &qeth_l3_devtype,
2540 .process_rx_buffer = qeth_l3_process_inbound_buffer,
2541 .recover = qeth_l3_recover,
2542 .setup = qeth_l3_probe_device,
2543 .remove = qeth_l3_remove_device,
2544 .set_online = qeth_l3_set_online,
2545 .set_offline = qeth_l3_set_offline,
2546 .freeze = qeth_l3_pm_suspend,
2547 .thaw = qeth_l3_pm_resume,
2548 .restore = qeth_l3_pm_resume,
2549 .do_ioctl = qeth_l3_do_ioctl,
2550 .control_event_handler = qeth_l3_control_event,
2552 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2554 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2555 struct qeth_ipaddr *addr,
2556 unsigned long event)
2560 spin_lock_bh(&card->ip_lock);
2561 qeth_l3_add_ip(card, addr);
2562 spin_unlock_bh(&card->ip_lock);
2565 spin_lock_bh(&card->ip_lock);
2566 qeth_l3_delete_ip(card, addr);
2567 spin_unlock_bh(&card->ip_lock);
2574 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2576 if (is_vlan_dev(dev))
2577 dev = vlan_dev_real_dev(dev);
2578 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2579 dev->netdev_ops == &qeth_l3_netdev_ops)
2580 return (struct qeth_card *) dev->ml_priv;
2584 static int qeth_l3_ip_event(struct notifier_block *this,
2585 unsigned long event, void *ptr)
2588 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2589 struct net_device *dev = ifa->ifa_dev->dev;
2590 struct qeth_ipaddr addr;
2591 struct qeth_card *card;
2593 if (dev_net(dev) != &init_net)
2596 card = qeth_l3_get_card_from_dev(dev);
2599 QETH_CARD_TEXT(card, 3, "ipevent");
2601 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2602 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2603 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2605 return qeth_l3_handle_ip_event(card, &addr, event);
2608 static struct notifier_block qeth_l3_ip_notifier = {
2613 static int qeth_l3_ip6_event(struct notifier_block *this,
2614 unsigned long event, void *ptr)
2616 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2617 struct net_device *dev = ifa->idev->dev;
2618 struct qeth_ipaddr addr;
2619 struct qeth_card *card;
2621 card = qeth_l3_get_card_from_dev(dev);
2624 QETH_CARD_TEXT(card, 3, "ip6event");
2625 if (!qeth_is_supported(card, IPA_IPV6))
2628 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
2629 addr.u.a6.addr = ifa->addr;
2630 addr.u.a6.pfxlen = ifa->prefix_len;
2632 return qeth_l3_handle_ip_event(card, &addr, event);
2635 static struct notifier_block qeth_l3_ip6_notifier = {
2640 static int qeth_l3_register_notifiers(void)
2644 QETH_DBF_TEXT(SETUP, 5, "regnotif");
2645 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2648 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2650 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2656 static void qeth_l3_unregister_notifiers(void)
2658 QETH_DBF_TEXT(SETUP, 5, "unregnot");
2659 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2660 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2663 static int __init qeth_l3_init(void)
2665 pr_info("register layer 3 discipline\n");
2666 return qeth_l3_register_notifiers();
2669 static void __exit qeth_l3_exit(void)
2671 qeth_l3_unregister_notifiers();
2672 pr_info("unregister layer 3 discipline\n");
2675 module_init(qeth_l3_init);
2676 module_exit(qeth_l3_exit);
2677 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2678 MODULE_DESCRIPTION("qeth layer 3 discipline");
2679 MODULE_LICENSE("GPL");