Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2247 insertions, 0 deletions

diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
new file mode 100644
index 000000000..d8cdf9024
--- /dev/null
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -0,0 +1,2247 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *    Copyright IBM Corp. 2007, 2009
+ *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
+ *		 Frank Pavlic <fpavlic@de.ibm.com>,
+ *		 Thomas Spatzier <tspat@de.ibm.com>,
+ *		 Frank Blaschka <frank.blaschka@de.ibm.com>
+ */
+
+#define KMSG_COMPONENT "qeth"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/bitops.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/etherdevice.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/ipv6.h>
+#include <linux/inetdevice.h>
+#include <linux/igmp.h>
+#include <linux/slab.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/skbuff.h>
+
+#include <net/ip.h>
+#include <net/arp.h>
+#include <net/route.h>
+#include <net/ipv6.h>
+#include <net/ip6_route.h>
+#include <net/iucv/af_iucv.h>
+#include <linux/hashtable.h>
+
+#include "qeth_l3.h"
+
+static int qeth_l3_register_addr_entry(struct qeth_card *,
+		struct qeth_ipaddr *);
+static int qeth_l3_deregister_addr_entry(struct qeth_card *,
+		struct qeth_ipaddr *);
+
+int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,
+			     char *buf)
+{
+	if (proto == QETH_PROT_IPV4)
+		return sprintf(buf, "%pI4", addr);
+	else
+		return sprintf(buf, "%pI6", addr);
+}
+
+static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
+						   struct qeth_ipaddr *query)
+{
+	u32 key = qeth_l3_ipaddr_hash(query);
+	struct qeth_ipaddr *addr;
+
+	if (query->is_multicast) {
+		hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key)
+			if (qeth_l3_addr_match_ip(addr, query))
+				return addr;
+	} else {
+		hash_for_each_possible(card->ip_htable,  addr, hnode, key)
+			if (qeth_l3_addr_match_ip(addr, query))
+				return addr;
+	}
+	return NULL;
+}
+
+static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
+{
+	int i, j;
+	u8 octet;
+
+	for (i = 0; i < len; ++i) {
+		octet = addr[i];
+		for (j = 7; j >= 0; --j) {
+			bits[i*8 + j] = octet & 1;
+			octet >>= 1;
+		}
+	}
+}
+
+static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
+					     struct qeth_ipaddr *addr)
+{
+	struct qeth_ipato_entry *ipatoe;
+	u8 addr_bits[128] = {0, };
+	u8 ipatoe_bits[128] = {0, };
+	int rc = 0;
+
+	if (!card->ipato.enabled)
+		return false;
+	if (addr->type != QETH_IP_TYPE_NORMAL)
+		return false;
+
+	qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
+				     (addr->proto == QETH_PROT_IPV4) ? 4 : 16);
+	list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
+		if (addr->proto != ipatoe->proto)
+			continue;
+		qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
+					  (ipatoe->proto == QETH_PROT_IPV4) ?
+					  4 : 16);
+		if (addr->proto == QETH_PROT_IPV4)
+			rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits);
+		else
+			rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits);
+		if (rc)
+			break;
+	}
+	/* invert? */
+	if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
+		rc = !rc;
+	else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
+		rc = !rc;
+
+	return rc;
+}
+
+static int qeth_l3_delete_ip(struct qeth_card *card,
+			     struct qeth_ipaddr *tmp_addr)
+{
+	int rc = 0;
+	struct qeth_ipaddr *addr;
+
+	if (tmp_addr->type == QETH_IP_TYPE_RXIP)
+		QETH_CARD_TEXT(card, 2, "delrxip");
+	else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
+		QETH_CARD_TEXT(card, 2, "delvipa");
+	else
+		QETH_CARD_TEXT(card, 2, "delip");
+
+	if (tmp_addr->proto == QETH_PROT_IPV4)
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
+	else {
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
+		QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
+	}
+
+	addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
+	if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
+		return -ENOENT;
+
+	addr->ref_counter--;
+	if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
+		return rc;
+
+	if (qeth_card_hw_is_reachable(card))
+		rc = qeth_l3_deregister_addr_entry(card, addr);
+
+	hash_del(&addr->hnode);
+	kfree(addr);
+
+	return rc;
+}
+
+static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
+{
+	int rc = 0;
+	struct qeth_ipaddr *addr;
+	char buf[40];
+
+	if (tmp_addr->type == QETH_IP_TYPE_RXIP)
+		QETH_CARD_TEXT(card, 2, "addrxip");
+	else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
+		QETH_CARD_TEXT(card, 2, "addvipa");
+	else
+		QETH_CARD_TEXT(card, 2, "addip");
+
+	if (tmp_addr->proto == QETH_PROT_IPV4)
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
+	else {
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
+		QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
+	}
+
+	addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
+	if (addr) {
+		if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
+			return -EADDRINUSE;
+		if (qeth_l3_addr_match_all(addr, tmp_addr)) {
+			addr->ref_counter++;
+			return 0;
+		}
+		qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
+					 buf);
+		dev_warn(&card->gdev->dev,
+			 "Registering IP address %s failed\n", buf);
+		return -EADDRINUSE;
+	} else {
+		addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
+		if (!addr)
+			return -ENOMEM;
+
+		if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
+			QETH_CARD_TEXT(card, 2, "tkovaddr");
+			addr->ipato = 1;
+		}
+		hash_add(card->ip_htable, &addr->hnode,
+				qeth_l3_ipaddr_hash(addr));
+
+		if (!qeth_card_hw_is_reachable(card)) {
+			addr->disp_flag = QETH_DISP_ADDR_ADD;
+			return 0;
+		}
+
+		rc = qeth_l3_register_addr_entry(card, addr);
+
+		if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
+			addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+		} else {
+			hash_del(&addr->hnode);
+			kfree(addr);
+		}
+	}
+	return rc;
+}
+
+static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
+			     bool add)
+{
+	int rc;
+
+	mutex_lock(&card->ip_lock);
+	rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
+	mutex_unlock(&card->ip_lock);
+
+	return rc;
+}
+
+static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
+{
+	struct qeth_ipaddr *addr;
+	struct hlist_node *tmp;
+	int i;
+
+	hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
+		hash_del(&addr->hnode);
+		kfree(addr);
+	}
+}
+
+static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
+{
+	struct qeth_ipaddr *addr;
+	struct hlist_node *tmp;
+	int i;
+
+	QETH_CARD_TEXT(card, 4, "clearip");
+
+	mutex_lock(&card->ip_lock);
+
+	hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
+		if (!recover) {
+			hash_del(&addr->hnode);
+			kfree(addr);
+			continue;
+		}
+		addr->disp_flag = QETH_DISP_ADDR_ADD;
+	}
+
+	mutex_unlock(&card->ip_lock);
+}
+
+static void qeth_l3_recover_ip(struct qeth_card *card)
+{
+	struct qeth_ipaddr *addr;
+	struct hlist_node *tmp;
+	int i;
+	int rc;
+
+	QETH_CARD_TEXT(card, 4, "recovrip");
+
+	mutex_lock(&card->ip_lock);
+
+	hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
+		if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
+			rc = qeth_l3_register_addr_entry(card, addr);
+
+			if (!rc) {
+				addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+			} else {
+				hash_del(&addr->hnode);
+				kfree(addr);
+			}
+		}
+	}
+
+	mutex_unlock(&card->ip_lock);
+}
+
+static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
+			       unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
+
+	switch (cmd->hdr.return_code) {
+	case IPA_RC_SUCCESS:
+		return 0;
+	case IPA_RC_DUPLICATE_IP_ADDRESS:
+		return -EADDRINUSE;
+	case IPA_RC_MC_ADDR_NOT_FOUND:
+		return -ENOENT;
+	case IPA_RC_LAN_OFFLINE:
+		return -ENETDOWN;
+	default:
+		return -EIO;
+	}
+}
+
+static int qeth_l3_send_setdelmc(struct qeth_card *card,
+				 struct qeth_ipaddr *addr,
+				 enum qeth_ipa_cmds ipacmd)
+{
+	struct qeth_cmd_buffer *iob;
+	struct qeth_ipa_cmd *cmd;
+
+	QETH_CARD_TEXT(card, 4, "setdelmc");
+
+	iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
+				 IPA_DATA_SIZEOF(setdelipm));
+	if (!iob)
+		return -ENOMEM;
+	cmd = __ipa_cmd(iob);
+	if (addr->proto == QETH_PROT_IPV6) {
+		cmd->data.setdelipm.ip = addr->u.a6.addr;
+		ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
+	} else {
+		cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
+		ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
+	}
+
+	return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
+}
+
+static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len)
+{
+	unsigned int i = 0;
+
+	while (len && i < 4) {
+		int mask_len = min_t(int, len, 32);
+
+		prefix->s6_addr32[i] = inet_make_mask(mask_len);
+		len -= mask_len;
+		i++;
+	}
+}
+
+static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
+{
+	switch (addr->type) {
+	case QETH_IP_TYPE_RXIP:
+		return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
+	case QETH_IP_TYPE_VIPA:
+		return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
+			       QETH_IPA_DELIP_VIPA_FLAG;
+	default:
+		return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
+	}
+}
+
+static int qeth_l3_send_setdelip(struct qeth_card *card,
+				 struct qeth_ipaddr *addr,
+				 enum qeth_ipa_cmds ipacmd)
+{
+	struct qeth_cmd_buffer *iob;
+	struct qeth_ipa_cmd *cmd;
+	u32 flags;
+
+	QETH_CARD_TEXT(card, 4, "setdelip");
+
+	iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
+				 IPA_DATA_SIZEOF(setdelip6));
+	if (!iob)
+		return -ENOMEM;
+	cmd = __ipa_cmd(iob);
+
+	flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
+	QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
+
+	if (addr->proto == QETH_PROT_IPV6) {
+		cmd->data.setdelip6.addr = addr->u.a6.addr;
+		qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix,
+					addr->u.a6.pfxlen);
+		cmd->data.setdelip6.flags = flags;
+	} else {
+		cmd->data.setdelip4.addr = addr->u.a4.addr;
+		cmd->data.setdelip4.mask = addr->u.a4.mask;
+		cmd->data.setdelip4.flags = flags;
+	}
+
+	return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
+}
+
+static int qeth_l3_send_setrouting(struct qeth_card *card,
+	enum qeth_routing_types type, enum qeth_prot_versions prot)
+{
+	int rc;
+	struct qeth_ipa_cmd *cmd;
+	struct qeth_cmd_buffer *iob;
+
+	QETH_CARD_TEXT(card, 4, "setroutg");
+	iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
+				 IPA_DATA_SIZEOF(setrtg));
+	if (!iob)
+		return -ENOMEM;
+	cmd = __ipa_cmd(iob);
+	cmd->data.setrtg.type = (type);
+	rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+	return rc;
+}
+
+static int qeth_l3_correct_routing_type(struct qeth_card *card,
+		enum qeth_routing_types *type, enum qeth_prot_versions prot)
+{
+	if (IS_IQD(card)) {
+		switch (*type) {
+		case NO_ROUTER:
+		case PRIMARY_CONNECTOR:
+		case SECONDARY_CONNECTOR:
+		case MULTICAST_ROUTER:
+			return 0;
+		default:
+			goto out_inval;
+		}
+	} else {
+		switch (*type) {
+		case NO_ROUTER:
+		case PRIMARY_ROUTER:
+		case SECONDARY_ROUTER:
+			return 0;
+		case MULTICAST_ROUTER:
+			if (qeth_is_ipafunc_supported(card, prot,
+						      IPA_OSA_MC_ROUTER))
+				return 0;
+		default:
+			goto out_inval;
+		}
+	}
+out_inval:
+	*type = NO_ROUTER;
+	return -EINVAL;
+}
+
+int qeth_l3_setrouting_v4(struct qeth_card *card)
+{
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "setrtg4");
+
+	rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
+				  QETH_PROT_IPV4);
+	if (rc)
+		return rc;
+
+	rc = qeth_l3_send_setrouting(card, card->options.route4.type,
+				  QETH_PROT_IPV4);
+	if (rc) {
+		card->options.route4.type = NO_ROUTER;
+		QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
+				 rc, CARD_DEVID(card));
+	}
+	return rc;
+}
+
+int qeth_l3_setrouting_v6(struct qeth_card *card)
+{
+	int rc = 0;
+
+	QETH_CARD_TEXT(card, 3, "setrtg6");
+
+	if (!qeth_is_supported(card, IPA_IPV6))
+		return 0;
+	rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
+				  QETH_PROT_IPV6);
+	if (rc)
+		return rc;
+
+	rc = qeth_l3_send_setrouting(card, card->options.route6.type,
+				  QETH_PROT_IPV6);
+	if (rc) {
+		card->options.route6.type = NO_ROUTER;
+		QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
+				 rc, CARD_DEVID(card));
+	}
+	return rc;
+}
+
+/*
+ * IP address takeover related functions
+ */
+
+/**
+ * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
+ *
+ * Caller must hold ip_lock.
+ */
+void qeth_l3_update_ipato(struct qeth_card *card)
+{
+	struct qeth_ipaddr *addr;
+	unsigned int i;
+
+	hash_for_each(card->ip_htable, i, addr, hnode) {
+		if (addr->type != QETH_IP_TYPE_NORMAL)
+			continue;
+		addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
+	}
+}
+
+static void qeth_l3_clear_ipato_list(struct qeth_card *card)
+{
+	struct qeth_ipato_entry *ipatoe, *tmp;
+
+	mutex_lock(&card->ip_lock);
+
+	list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
+		list_del(&ipatoe->entry);
+		kfree(ipatoe);
+	}
+
+	qeth_l3_update_ipato(card);
+	mutex_unlock(&card->ip_lock);
+}
+
+int qeth_l3_add_ipato_entry(struct qeth_card *card,
+				struct qeth_ipato_entry *new)
+{
+	struct qeth_ipato_entry *ipatoe;
+	int rc = 0;
+
+	QETH_CARD_TEXT(card, 2, "addipato");
+
+	mutex_lock(&card->ip_lock);
+
+	list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
+		if (ipatoe->proto != new->proto)
+			continue;
+		if (!memcmp(ipatoe->addr, new->addr,
+			    (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) &&
+		    (ipatoe->mask_bits == new->mask_bits)) {
+			rc = -EEXIST;
+			break;
+		}
+	}
+
+	if (!rc) {
+		list_add_tail(&new->entry, &card->ipato.entries);
+		qeth_l3_update_ipato(card);
+	}
+
+	mutex_unlock(&card->ip_lock);
+
+	return rc;
+}
+
+int qeth_l3_del_ipato_entry(struct qeth_card *card,
+			    enum qeth_prot_versions proto, u8 *addr,
+			    unsigned int mask_bits)
+{
+	struct qeth_ipato_entry *ipatoe, *tmp;
+	int rc = -ENOENT;
+
+	QETH_CARD_TEXT(card, 2, "delipato");
+
+	mutex_lock(&card->ip_lock);
+
+	list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
+		if (ipatoe->proto != proto)
+			continue;
+		if (!memcmp(ipatoe->addr, addr,
+			    (proto == QETH_PROT_IPV4) ? 4 : 16) &&
+		    (ipatoe->mask_bits == mask_bits)) {
+			list_del(&ipatoe->entry);
+			qeth_l3_update_ipato(card);
+			kfree(ipatoe);
+			rc = 0;
+		}
+	}
+
+	mutex_unlock(&card->ip_lock);
+
+	return rc;
+}
+
+int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
+			     enum qeth_ip_types type,
+			     enum qeth_prot_versions proto)
+{
+	struct qeth_ipaddr addr;
+
+	qeth_l3_init_ipaddr(&addr, type, proto);
+	if (proto == QETH_PROT_IPV4)
+		memcpy(&addr.u.a4.addr, ip, 4);
+	else
+		memcpy(&addr.u.a6.addr, ip, 16);
+
+	return qeth_l3_modify_ip(card, &addr, add);
+}
+
+int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
+{
+	struct qeth_ipaddr addr;
+	unsigned int i;
+
+	qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
+	addr.u.a6.addr.s6_addr[0] = 0xfe;
+	addr.u.a6.addr.s6_addr[1] = 0x80;
+	for (i = 0; i < 8; i++)
+		addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
+
+	return qeth_l3_modify_ip(card, &addr, add);
+}
+
+static int qeth_l3_register_addr_entry(struct qeth_card *card,
+				struct qeth_ipaddr *addr)
+{
+	char buf[50];
+	int rc = 0;
+	int cnt = 3;
+
+	if (card->options.sniffer)
+		return 0;
+
+	if (addr->proto == QETH_PROT_IPV4) {
+		QETH_CARD_TEXT(card, 2, "setaddr4");
+		QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
+	} else if (addr->proto == QETH_PROT_IPV6) {
+		QETH_CARD_TEXT(card, 2, "setaddr6");
+		QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
+		QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
+	} else {
+		QETH_CARD_TEXT(card, 2, "setaddr?");
+		QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
+	}
+	do {
+		if (addr->is_multicast)
+			rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
+		else
+			rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
+		if (rc)
+			QETH_CARD_TEXT(card, 2, "failed");
+	} while ((--cnt > 0) && rc);
+	if (rc) {
+		QETH_CARD_TEXT(card, 2, "FAILED");
+		qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
+		dev_warn(&card->gdev->dev,
+			"Registering IP address %s failed\n", buf);
+	}
+	return rc;
+}
+
+static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
+						struct qeth_ipaddr *addr)
+{
+	int rc = 0;
+
+	if (card->options.sniffer)
+		return 0;
+
+	if (addr->proto == QETH_PROT_IPV4) {
+		QETH_CARD_TEXT(card, 2, "deladdr4");
+		QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
+	} else if (addr->proto == QETH_PROT_IPV6) {
+		QETH_CARD_TEXT(card, 2, "deladdr6");
+		QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
+		QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
+	} else {
+		QETH_CARD_TEXT(card, 2, "deladdr?");
+		QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
+	}
+	if (addr->is_multicast)
+		rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
+	else
+		rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
+	if (rc)
+		QETH_CARD_TEXT(card, 2, "failed");
+
+	return rc;
+}
+
+static int qeth_l3_setadapter_parms(struct qeth_card *card)
+{
+	int rc = 0;
+
+	QETH_CARD_TEXT(card, 2, "setadprm");
+
+	if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
+		rc = qeth_setadpparms_change_macaddr(card);
+		if (rc)
+			dev_warn(&card->gdev->dev, "Reading the adapter MAC"
+				" address failed\n");
+	}
+
+	return rc;
+}
+
+static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
+{
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "ipaarp");
+
+	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+		dev_info(&card->gdev->dev,
+			 "ARP processing not supported on %s!\n",
+			 netdev_name(card->dev));
+		return 0;
+	}
+	rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
+					  IPA_CMD_ASS_START, NULL);
+	if (rc) {
+		dev_warn(&card->gdev->dev,
+			 "Starting ARP processing support for %s failed\n",
+			 netdev_name(card->dev));
+	}
+	return rc;
+}
+
+static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
+{
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "stsrcmac");
+
+	if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
+		dev_info(&card->gdev->dev,
+			 "Inbound source MAC-address not supported on %s\n",
+			 netdev_name(card->dev));
+		return -EOPNOTSUPP;
+	}
+
+	rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
+					  IPA_CMD_ASS_START, NULL);
+	if (rc)
+		dev_warn(&card->gdev->dev,
+			 "Starting source MAC-address support for %s failed\n",
+			 netdev_name(card->dev));
+	return rc;
+}
+
+static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
+{
+	int rc = 0;
+
+	QETH_CARD_TEXT(card, 3, "strtvlan");
+
+	if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
+		dev_info(&card->gdev->dev,
+			 "VLAN not supported on %s\n", netdev_name(card->dev));
+		return -EOPNOTSUPP;
+	}
+
+	rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
+					  IPA_CMD_ASS_START, NULL);
+	if (rc) {
+		dev_warn(&card->gdev->dev,
+			 "Starting VLAN support for %s failed\n",
+			 netdev_name(card->dev));
+	} else {
+		dev_info(&card->gdev->dev, "VLAN enabled\n");
+	}
+	return rc;
+}
+
+static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
+{
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "stmcast");
+
+	if (!qeth_is_supported(card, IPA_MULTICASTING)) {
+		dev_info(&card->gdev->dev,
+			 "Multicast not supported on %s\n",
+			 netdev_name(card->dev));
+		return -EOPNOTSUPP;
+	}
+
+	rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
+					  IPA_CMD_ASS_START, NULL);
+	if (rc) {
+		dev_warn(&card->gdev->dev,
+			 "Starting multicast support for %s failed\n",
+			 netdev_name(card->dev));
+	} else {
+		dev_info(&card->gdev->dev, "Multicast enabled\n");
+		card->dev->flags |= IFF_MULTICAST;
+	}
+	return rc;
+}
+
+static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
+{
+	u32 ipv6_data = 3;
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "softipv6");
+
+	if (IS_IQD(card))
+		goto out;
+
+	rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
+					  &ipv6_data);
+	if (rc) {
+		dev_err(&card->gdev->dev,
+			"Activating IPv6 support for %s failed\n",
+			netdev_name(card->dev));
+		return rc;
+	}
+	rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
+					     NULL);
+	if (rc) {
+		dev_err(&card->gdev->dev,
+			"Activating IPv6 support for %s failed\n",
+			 netdev_name(card->dev));
+		return rc;
+	}
+	rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
+					     IPA_CMD_ASS_START, NULL);
+	if (rc) {
+		dev_warn(&card->gdev->dev,
+			 "Enabling the passthrough mode for %s failed\n",
+			 netdev_name(card->dev));
+		return rc;
+	}
+out:
+	dev_info(&card->gdev->dev, "IPV6 enabled\n");
+	return 0;
+}
+
+static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
+{
+	QETH_CARD_TEXT(card, 3, "strtipv6");
+
+	if (!qeth_is_supported(card, IPA_IPV6)) {
+		dev_info(&card->gdev->dev,
+			 "IPv6 not supported on %s\n", netdev_name(card->dev));
+		return 0;
+	}
+	return qeth_l3_softsetup_ipv6(card);
+}
+
+static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
+{
+	u32 filter_data = 1;
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "stbrdcst");
+	card->info.broadcast_capable = 0;
+	if (!qeth_is_supported(card, IPA_FILTERING)) {
+		dev_info(&card->gdev->dev,
+			 "Broadcast not supported on %s\n",
+			 netdev_name(card->dev));
+		rc = -EOPNOTSUPP;
+		goto out;
+	}
+	rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
+					  IPA_CMD_ASS_START, NULL);
+	if (rc) {
+		dev_warn(&card->gdev->dev,
+			 "Enabling broadcast filtering for %s failed\n",
+			 netdev_name(card->dev));
+		goto out;
+	}
+
+	rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
+					  IPA_CMD_ASS_CONFIGURE, &filter_data);
+	if (rc) {
+		dev_warn(&card->gdev->dev,
+			 "Setting up broadcast filtering for %s failed\n",
+			 netdev_name(card->dev));
+		goto out;
+	}
+	card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
+	dev_info(&card->gdev->dev, "Broadcast enabled\n");
+	rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
+					  IPA_CMD_ASS_ENABLE, &filter_data);
+	if (rc) {
+		dev_warn(&card->gdev->dev,
+			 "Setting up broadcast echo filtering for %s failed\n",
+			 netdev_name(card->dev));
+		goto out;
+	}
+	card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
+out:
+	if (card->info.broadcast_capable)
+		card->dev->flags |= IFF_BROADCAST;
+	else
+		card->dev->flags &= ~IFF_BROADCAST;
+	return rc;
+}
+
+static void qeth_l3_start_ipassists(struct qeth_card *card)
+{
+	QETH_CARD_TEXT(card, 3, "strtipas");
+
+	qeth_l3_start_ipa_arp_processing(card);	/* go on*/
+	qeth_l3_start_ipa_source_mac(card);	/* go on*/
+	qeth_l3_start_ipa_vlan(card);		/* go on*/
+	qeth_l3_start_ipa_multicast(card);		/* go on*/
+	qeth_l3_start_ipa_ipv6(card);		/* go on*/
+	qeth_l3_start_ipa_broadcast(card);		/* go on*/
+}
+
+static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
+		struct qeth_reply *reply, unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
+
+	if (cmd->hdr.return_code)
+		return -EIO;
+	if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
+		return -EADDRNOTAVAIL;
+
+	ether_addr_copy(card->dev->dev_addr,
+			cmd->data.create_destroy_addr.mac_addr);
+	return 0;
+}
+
+static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
+{
+	int rc = 0;
+	struct qeth_cmd_buffer *iob;
+
+	QETH_CARD_TEXT(card, 2, "hsrmac");
+
+	iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
+				 IPA_DATA_SIZEOF(create_destroy_addr));
+	if (!iob)
+		return -ENOMEM;
+
+	rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
+				NULL);
+	return rc;
+}
+
+static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
+		struct qeth_reply *reply, unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
+	u16 *uid = reply->param;
+
+	if (cmd->hdr.return_code == 0) {
+		*uid = cmd->data.create_destroy_addr.uid;
+		return 0;
+	}
+
+	dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
+	return -EIO;
+}
+
+static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid)
+{
+	struct qeth_cmd_buffer *iob;
+
+	QETH_CARD_TEXT(card, 2, "guniqeid");
+
+	if (!qeth_is_supported(card, IPA_IPV6))
+		goto out;
+
+	iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
+				 IPA_DATA_SIZEOF(create_destroy_addr));
+	if (!iob)
+		goto out;
+
+	__ipa_cmd(iob)->data.create_destroy_addr.uid = uid;
+	qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid);
+
+out:
+	return uid;
+}
+
+static int
+qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
+			    unsigned long data)
+{
+	struct qeth_ipa_cmd	   *cmd;
+	__u16 rc;
+
+	QETH_CARD_TEXT(card, 2, "diastrcb");
+
+	cmd = (struct qeth_ipa_cmd *)data;
+	rc = cmd->hdr.return_code;
+	if (rc)
+		QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
+	switch (cmd->data.diagass.action) {
+	case QETH_DIAGS_CMD_TRACE_QUERY:
+		break;
+	case QETH_DIAGS_CMD_TRACE_DISABLE:
+		switch (rc) {
+		case 0:
+		case IPA_RC_INVALID_SUBCMD:
+			card->info.promisc_mode = SET_PROMISC_MODE_OFF;
+			dev_info(&card->gdev->dev, "The HiperSockets network "
+				"traffic analyzer is deactivated\n");
+			break;
+		default:
+			break;
+		}
+		break;
+	case QETH_DIAGS_CMD_TRACE_ENABLE:
+		switch (rc) {
+		case 0:
+			card->info.promisc_mode = SET_PROMISC_MODE_ON;
+			dev_info(&card->gdev->dev, "The HiperSockets network "
+				"traffic analyzer is activated\n");
+			break;
+		case IPA_RC_HARDWARE_AUTH_ERROR:
+			dev_warn(&card->gdev->dev, "The device is not "
+				"authorized to run as a HiperSockets network "
+				"traffic analyzer\n");
+			break;
+		case IPA_RC_TRACE_ALREADY_ACTIVE:
+			dev_warn(&card->gdev->dev, "A HiperSockets "
+				"network traffic analyzer is already "
+				"active in the HiperSockets LAN\n");
+			break;
+		default:
+			break;
+		}
+		break;
+	default:
+		QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
+				 cmd->data.diagass.action, CARD_DEVID(card));
+	}
+
+	return rc ? -EIO : 0;
+}
+
+static int
+qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
+{
+	struct qeth_cmd_buffer *iob;
+	struct qeth_ipa_cmd    *cmd;
+
+	QETH_CARD_TEXT(card, 2, "diagtrac");
+
+	iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
+	if (!iob)
+		return -ENOMEM;
+	cmd = __ipa_cmd(iob);
+	cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
+	cmd->data.diagass.action = diags_cmd;
+	return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
+}
+
+static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
+{
+	struct qeth_card *card = arg;
+	struct inet6_dev *in6_dev;
+	struct in_device *in4_dev;
+	struct qeth_ipaddr *ipm;
+	struct qeth_ipaddr tmp;
+	struct ip_mc_list *im4;
+	struct ifmcaddr6 *im6;
+
+	QETH_CARD_TEXT(card, 4, "addmc");
+
+	if (!dev || !(dev->flags & IFF_UP))
+		goto out;
+
+	in4_dev = __in_dev_get_rtnl(dev);
+	if (!in4_dev)
+		goto walk_ipv6;
+
+	qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
+	tmp.disp_flag = QETH_DISP_ADDR_ADD;
+	tmp.is_multicast = 1;
+
+	for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
+	     im4 = rtnl_dereference(im4->next_rcu)) {
+		tmp.u.a4.addr = im4->multiaddr;
+
+		ipm = qeth_l3_find_addr_by_ip(card, &tmp);
+		if (ipm) {
+			/* for mcast, by-IP match means full match */
+			ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+			continue;
+		}
+
+		ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
+		if (!ipm)
+			continue;
+
+		hash_add(card->rx_mode_addrs, &ipm->hnode,
+			 qeth_l3_ipaddr_hash(ipm));
+	}
+
+walk_ipv6:
+	if (!qeth_is_supported(card, IPA_IPV6))
+		goto out;
+
+	in6_dev = __in6_dev_get(dev);
+	if (!in6_dev)
+		goto out;
+
+	qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
+	tmp.disp_flag = QETH_DISP_ADDR_ADD;
+	tmp.is_multicast = 1;
+
+	read_lock_bh(&in6_dev->lock);
+	for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
+		tmp.u.a6.addr = im6->mca_addr;
+
+		ipm = qeth_l3_find_addr_by_ip(card, &tmp);
+		if (ipm) {
+			/* for mcast, by-IP match means full match */
+			ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+			continue;
+		}
+
+		ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
+		if (!ipm)
+			continue;
+
+		hash_add(card->rx_mode_addrs, &ipm->hnode,
+			 qeth_l3_ipaddr_hash(ipm));
+
+	}
+	read_unlock_bh(&in6_dev->lock);
+
+out:
+	return 0;
+}
+
+static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
+				   __be16 proto, u16 vid)
+{
+	struct qeth_card *card = dev->ml_priv;
+
+	QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
+	return 0;
+}
+
+static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
+				    __be16 proto, u16 vid)
+{
+	struct qeth_card *card = dev->ml_priv;
+
+	QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
+	return 0;
+}
+
+static void qeth_l3_set_promisc_mode(struct qeth_card *card)
+{
+	bool enable = card->dev->flags & IFF_PROMISC;
+
+	if (card->info.promisc_mode == enable)
+		return;
+
+	if (IS_VM_NIC(card)) {		/* Guestlan trace */
+		if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
+			qeth_setadp_promisc_mode(card, enable);
+	} else if (card->options.sniffer &&	/* HiperSockets trace */
+		   qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
+		if (enable) {
+			QETH_CARD_TEXT(card, 3, "+promisc");
+			qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
+		} else {
+			QETH_CARD_TEXT(card, 3, "-promisc");
+			qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
+		}
+	}
+}
+
+static void qeth_l3_rx_mode_work(struct work_struct *work)
+{
+	struct qeth_card *card = container_of(work, struct qeth_card,
+					      rx_mode_work);
+	struct qeth_ipaddr *addr;
+	struct hlist_node *tmp;
+	int i, rc;
+
+	QETH_CARD_TEXT(card, 3, "setmulti");
+
+	if (!card->options.sniffer) {
+		rtnl_lock();
+		qeth_l3_add_mcast_rtnl(card->dev, 0, card);
+		if (qeth_is_supported(card, IPA_FULL_VLAN))
+			vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
+		rtnl_unlock();
+
+		hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
+			switch (addr->disp_flag) {
+			case QETH_DISP_ADDR_DELETE:
+				rc = qeth_l3_deregister_addr_entry(card, addr);
+				if (!rc || rc == -ENOENT) {
+					hash_del(&addr->hnode);
+					kfree(addr);
+				}
+				break;
+			case QETH_DISP_ADDR_ADD:
+				rc = qeth_l3_register_addr_entry(card, addr);
+				if (rc && rc != -ENETDOWN) {
+					hash_del(&addr->hnode);
+					kfree(addr);
+					break;
+				}
+				fallthrough;
+			default:
+				/* for next call to set_rx_mode(): */
+				addr->disp_flag = QETH_DISP_ADDR_DELETE;
+			}
+		}
+	}
+
+	qeth_l3_set_promisc_mode(card);
+}
+
+static int qeth_l3_arp_makerc(u16 rc)
+{
+	switch (rc) {
+	case IPA_RC_SUCCESS:
+		return 0;
+	case QETH_IPA_ARP_RC_NOTSUPP:
+	case QETH_IPA_ARP_RC_Q_NOTSUPP:
+		return -EOPNOTSUPP;
+	case QETH_IPA_ARP_RC_OUT_OF_RANGE:
+		return -EINVAL;
+	case QETH_IPA_ARP_RC_Q_NO_DATA:
+		return -ENOENT;
+	default:
+		return -EIO;
+	}
+}
+
+static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
+			      unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
+
+	qeth_setassparms_cb(card, reply, data);
+	return qeth_l3_arp_makerc(cmd->hdr.return_code);
+}
+
+static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
+{
+	struct qeth_cmd_buffer *iob;
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "arpstnoe");
+
+	/*
+	 * currently GuestLAN only supports the ARP assist function
+	 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
+	 * thus we say EOPNOTSUPP for this ARP function
+	 */
+	if (IS_VM_NIC(card))
+		return -EOPNOTSUPP;
+	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+		return -EOPNOTSUPP;
+	}
+
+	iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+				       IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
+				       SETASS_DATA_SIZEOF(flags_32bit),
+				       QETH_PROT_IPV4);
+	if (!iob)
+		return -ENOMEM;
+
+	__ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
+	rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
+	if (rc)
+		QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
+				 CARD_DEVID(card), rc);
+	return rc;
+}
+
+static __u32 get_arp_entry_size(struct qeth_card *card,
+			struct qeth_arp_query_data *qdata,
+			struct qeth_arp_entrytype *type, __u8 strip_entries)
+{
+	__u32 rc;
+	__u8 is_hsi;
+
+	is_hsi = qdata->reply_bits == 5;
+	if (type->ip == QETHARP_IP_ADDR_V4) {
+		QETH_CARD_TEXT(card, 4, "arpev4");
+		if (strip_entries) {
+			rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
+				sizeof(struct qeth_arp_qi_entry7_short);
+		} else {
+			rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
+				sizeof(struct qeth_arp_qi_entry7);
+		}
+	} else if (type->ip == QETHARP_IP_ADDR_V6) {
+		QETH_CARD_TEXT(card, 4, "arpev6");
+		if (strip_entries) {
+			rc = is_hsi ?
+				sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
+				sizeof(struct qeth_arp_qi_entry7_short_ipv6);
+		} else {
+			rc = is_hsi ?
+				sizeof(struct qeth_arp_qi_entry5_ipv6) :
+				sizeof(struct qeth_arp_qi_entry7_ipv6);
+		}
+	} else {
+		QETH_CARD_TEXT(card, 4, "arpinv");
+		rc = 0;
+	}
+
+	return rc;
+}
+
+static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
+{
+	return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
+		(type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
+}
+
+static int qeth_l3_arp_query_cb(struct qeth_card *card,
+		struct qeth_reply *reply, unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd;
+	struct qeth_arp_query_data *qdata;
+	struct qeth_arp_query_info *qinfo;
+	int e;
+	int entrybytes_done;
+	int stripped_bytes;
+	__u8 do_strip_entries;
+
+	QETH_CARD_TEXT(card, 3, "arpquecb");
+
+	qinfo = (struct qeth_arp_query_info *) reply->param;
+	cmd = (struct qeth_ipa_cmd *) data;
+	QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
+	if (cmd->hdr.return_code) {
+		QETH_CARD_TEXT(card, 4, "arpcberr");
+		QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
+		return qeth_l3_arp_makerc(cmd->hdr.return_code);
+	}
+	if (cmd->data.setassparms.hdr.return_code) {
+		cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
+		QETH_CARD_TEXT(card, 4, "setaperr");
+		QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
+		return qeth_l3_arp_makerc(cmd->hdr.return_code);
+	}
+	qdata = &cmd->data.setassparms.data.query_arp;
+	QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
+
+	do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
+	stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
+	entrybytes_done = 0;
+	for (e = 0; e < qdata->no_entries; ++e) {
+		char *cur_entry;
+		__u32 esize;
+		struct qeth_arp_entrytype *etype;
+
+		cur_entry = &qdata->data + entrybytes_done;
+		etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
+		if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
+			QETH_CARD_TEXT(card, 4, "pmis");
+			QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
+			break;
+		}
+		esize = get_arp_entry_size(card, qdata, etype,
+			do_strip_entries);
+		QETH_CARD_TEXT_(card, 5, "esz%i", esize);
+		if (!esize)
+			break;
+
+		if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
+			QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
+			memset(qinfo->udata, 0, 4);
+			return -ENOSPC;
+		}
+
+		memcpy(qinfo->udata + qinfo->udata_offset,
+			&qdata->data + entrybytes_done + stripped_bytes,
+			esize);
+		entrybytes_done += esize + stripped_bytes;
+		qinfo->udata_offset += esize;
+		++qinfo->no_entries;
+	}
+	/* check if all replies received ... */
+	if (cmd->data.setassparms.hdr.seq_no <
+	    cmd->data.setassparms.hdr.number_of_replies)
+		return 1;
+	QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
+	memcpy(qinfo->udata, &qinfo->no_entries, 4);
+	/* keep STRIP_ENTRIES flag so the user program can distinguish
+	 * stripped entries from normal ones */
+	if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
+		qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
+	memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
+	QETH_CARD_TEXT_(card, 4, "rc%i", 0);
+	return 0;
+}
+
+static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
+	enum qeth_prot_versions prot,
+	struct qeth_arp_query_info *qinfo)
+{
+	struct qeth_cmd_buffer *iob;
+	struct qeth_ipa_cmd *cmd;
+	int rc;
+
+	QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
+
+	iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+				       IPA_CMD_ASS_ARP_QUERY_INFO,
+				       SETASS_DATA_SIZEOF(query_arp), prot);
+	if (!iob)
+		return -ENOMEM;
+	cmd = __ipa_cmd(iob);
+	cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
+	rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
+	if (rc)
+		QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
+				 CARD_DEVID(card), rc);
+	return rc;
+}
+
+static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
+{
+	struct qeth_arp_query_info qinfo = {0, };
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "arpquery");
+
+	if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
+			       IPA_ARP_PROCESSING)) {
+		QETH_CARD_TEXT(card, 3, "arpqnsup");
+		rc = -EOPNOTSUPP;
+		goto out;
+	}
+	/* get size of userspace buffer and mask_bits -> 6 bytes */
+	if (copy_from_user(&qinfo, udata, 6)) {
+		rc = -EFAULT;
+		goto out;
+	}
+	qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
+	if (!qinfo.udata) {
+		rc = -ENOMEM;
+		goto out;
+	}
+	qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
+	rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
+	if (rc) {
+		if (copy_to_user(udata, qinfo.udata, 4))
+			rc = -EFAULT;
+		goto free_and_out;
+	}
+	if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
+		/* fails in case of GuestLAN QDIO mode */
+		qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
+	}
+	if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
+		QETH_CARD_TEXT(card, 4, "qactf");
+		rc = -EFAULT;
+		goto free_and_out;
+	}
+	QETH_CARD_TEXT(card, 4, "qacts");
+
+free_and_out:
+	kfree(qinfo.udata);
+out:
+	return rc;
+}
+
+static int qeth_l3_arp_modify_entry(struct qeth_card *card,
+				    struct qeth_arp_cache_entry *entry,
+				    enum qeth_arp_process_subcmds arp_cmd)
+{
+	struct qeth_arp_cache_entry *cmd_entry;
+	struct qeth_cmd_buffer *iob;
+	int rc;
+
+	if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
+		QETH_CARD_TEXT(card, 3, "arpadd");
+	else
+		QETH_CARD_TEXT(card, 3, "arpdel");
+
+	/*
+	 * currently GuestLAN only supports the ARP assist function
+	 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
+	 * thus we say EOPNOTSUPP for this ARP function
+	 */
+	if (IS_VM_NIC(card))
+		return -EOPNOTSUPP;
+	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+		return -EOPNOTSUPP;
+	}
+
+	iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
+				       SETASS_DATA_SIZEOF(arp_entry),
+				       QETH_PROT_IPV4);
+	if (!iob)
+		return -ENOMEM;
+
+	cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
+	ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
+	memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
+	rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
+	if (rc)
+		QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
+				 arp_cmd, CARD_DEVID(card), rc);
+	return rc;
+}
+
+static int qeth_l3_arp_flush_cache(struct qeth_card *card)
+{
+	struct qeth_cmd_buffer *iob;
+	int rc;
+
+	QETH_CARD_TEXT(card, 3, "arpflush");
+
+	/*
+	 * currently GuestLAN only supports the ARP assist function
+	 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
+	 * thus we say EOPNOTSUPP for this ARP function
+	*/
+	if (IS_VM_NIC(card) || IS_IQD(card))
+		return -EOPNOTSUPP;
+	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+		return -EOPNOTSUPP;
+	}
+
+	iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+				       IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
+				       QETH_PROT_IPV4);
+	if (!iob)
+		return -ENOMEM;
+
+	rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
+	if (rc)
+		QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
+				 CARD_DEVID(card), rc);
+	return rc;
+}
+
+static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	struct qeth_card *card = dev->ml_priv;
+	struct qeth_arp_cache_entry arp_entry;
+	enum qeth_arp_process_subcmds arp_cmd;
+	int rc = 0;
+
+	switch (cmd) {
+	case SIOC_QETH_ARP_SET_NO_ENTRIES:
+		if (!capable(CAP_NET_ADMIN)) {
+			rc = -EPERM;
+			break;
+		}
+		rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
+		break;
+	case SIOC_QETH_ARP_QUERY_INFO:
+		if (!capable(CAP_NET_ADMIN)) {
+			rc = -EPERM;
+			break;
+		}
+		rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
+		break;
+	case SIOC_QETH_ARP_ADD_ENTRY:
+	case SIOC_QETH_ARP_REMOVE_ENTRY:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+		if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
+			return -EFAULT;
+
+		arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
+				IPA_CMD_ASS_ARP_ADD_ENTRY :
+				IPA_CMD_ASS_ARP_REMOVE_ENTRY;
+		return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
+	case SIOC_QETH_ARP_FLUSH_CACHE:
+		if (!capable(CAP_NET_ADMIN)) {
+			rc = -EPERM;
+			break;
+		}
+		rc = qeth_l3_arp_flush_cache(card);
+		break;
+	default:
+		rc = -EOPNOTSUPP;
+	}
+	return rc;
+}
+
+static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
+				     int ipv)
+{
+	struct neighbour *n = NULL;
+
+	if (dst)
+		n = dst_neigh_lookup_skb(dst, skb);
+
+	if (n) {
+		int cast_type = n->type;
+
+		neigh_release(n);
+		if ((cast_type == RTN_BROADCAST) ||
+		    (cast_type == RTN_MULTICAST) ||
+		    (cast_type == RTN_ANYCAST))
+			return cast_type;
+		return RTN_UNICAST;
+	}
+
+	/* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
+	switch (ipv) {
+	case 4:
+		if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
+			return RTN_BROADCAST;
+		return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
+				RTN_MULTICAST : RTN_UNICAST;
+	case 6:
+		return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
+				RTN_MULTICAST : RTN_UNICAST;
+	default:
+		/* ... and MAC address */
+		return qeth_get_ether_cast_type(skb);
+	}
+}
+
+static int qeth_l3_get_cast_type(struct sk_buff *skb)
+{
+	int ipv = qeth_get_ip_version(skb);
+	struct dst_entry *dst;
+	int cast_type;
+
+	rcu_read_lock();
+	dst = qeth_dst_check_rcu(skb, ipv);
+	cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
+	rcu_read_unlock();
+
+	return cast_type;
+}
+
+static u8 qeth_l3_cast_type_to_flag(int cast_type)
+{
+	if (cast_type == RTN_MULTICAST)
+		return QETH_CAST_MULTICAST;
+	if (cast_type == RTN_ANYCAST)
+		return QETH_CAST_ANYCAST;
+	if (cast_type == RTN_BROADCAST)
+		return QETH_CAST_BROADCAST;
+	return QETH_CAST_UNICAST;
+}
+
+static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
+				struct qeth_hdr *hdr, struct sk_buff *skb,
+				int ipv, unsigned int data_len)
+{
+	struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
+	struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
+	struct qeth_card *card = queue->card;
+	struct dst_entry *dst;
+	int cast_type;
+
+	hdr->hdr.l3.length = data_len;
+
+	if (skb_is_gso(skb)) {
+		hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
+	} else {
+		hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
+
+		if (skb->protocol == htons(ETH_P_AF_IUCV)) {
+			l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
+			l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
+			memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
+			       iucv_trans_hdr(skb)->destUserID, 8);
+			return;
+		}
+
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
+			qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
+			/* some HW requires combined L3+L4 csum offload: */
+			if (ipv == 4)
+				hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
+		}
+	}
+
+	if (ipv == 4 || IS_IQD(card)) {
+		/* NETIF_F_HW_VLAN_CTAG_TX */
+		if (skb_vlan_tag_present(skb)) {
+			hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
+			hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
+		}
+	} else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
+		hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
+		hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
+	}
+
+	rcu_read_lock();
+	dst = qeth_dst_check_rcu(skb, ipv);
+
+	if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
+		cast_type = RTN_UNICAST;
+	else
+		cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
+	l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
+
+	if (ipv == 4) {
+		l3_hdr->next_hop.addr.s6_addr32[3] =
+					qeth_next_hop_v4_rcu(skb, dst);
+	} else if (ipv == 6) {
+		l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
+
+		hdr->hdr.l3.flags |= QETH_HDR_IPV6;
+		if (!IS_IQD(card))
+			hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
+	} else {
+		/* OSA only: */
+		l3_hdr->flags |= QETH_HDR_PASSTHRU;
+	}
+	rcu_read_unlock();
+}
+
+static void qeth_l3_fixup_headers(struct sk_buff *skb)
+{
+	struct iphdr *iph = ip_hdr(skb);
+
+	/* this is safe, IPv6 traffic takes a different path */
+	if (skb->ip_summed == CHECKSUM_PARTIAL)
+		iph->check = 0;
+	if (skb_is_gso(skb)) {
+		iph->tot_len = 0;
+		tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
+						    iph->daddr, 0);
+	}
+}
+
+static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
+			struct qeth_qdio_out_q *queue, int ipv)
+{
+	unsigned int hw_hdr_len;
+	int rc;
+
+	/* re-use the L2 header area for the HW header: */
+	hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
+				       sizeof(struct qeth_hdr);
+	rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
+	if (rc)
+		return rc;
+	skb_pull(skb, ETH_HLEN);
+
+	qeth_l3_fixup_headers(skb);
+	return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
+}
+
+static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
+					   struct net_device *dev)
+{
+	struct qeth_card *card = dev->ml_priv;
+	u16 txq = skb_get_queue_mapping(skb);
+	int ipv = qeth_get_ip_version(skb);
+	struct qeth_qdio_out_q *queue;
+	int rc;
+
+	if (!skb_is_gso(skb))
+		qdisc_skb_cb(skb)->pkt_len = skb->len;
+	if (IS_IQD(card)) {
+		queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
+
+		if (card->options.sniffer)
+			goto tx_drop;
+		if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
+		    (card->options.cq == QETH_CQ_ENABLED &&
+		     skb->protocol != htons(ETH_P_AF_IUCV)))
+			goto tx_drop;
+	} else {
+		queue = card->qdio.out_qs[txq];
+	}
+
+	if (!(dev->flags & IFF_BROADCAST) &&
+	    qeth_l3_get_cast_type(skb) == RTN_BROADCAST)
+		goto tx_drop;
+
+	if (ipv == 4 || IS_IQD(card))
+		rc = qeth_l3_xmit(card, skb, queue, ipv);
+	else
+		rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
+
+	if (!rc)
+		return NETDEV_TX_OK;
+
+tx_drop:
+	QETH_TXQ_STAT_INC(queue, tx_dropped);
+	kfree_skb(skb);
+	return NETDEV_TX_OK;
+}
+
+static void qeth_l3_set_rx_mode(struct net_device *dev)
+{
+	struct qeth_card *card = dev->ml_priv;
+
+	schedule_work(&card->rx_mode_work);
+}
+
+/*
+ * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
+ * NOARP on the netdevice is no option because it also turns off neighbor
+ * solicitation. For IPv4 we install a neighbor_setup function. We don't want
+ * arp resolution but we want the hard header (packet socket will work
+ * e.g. tcpdump)
+ */
+static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
+{
+	n->nud_state = NUD_NOARP;
+	memcpy(n->ha, "FAKELL", 6);
+	n->output = n->ops->connected_output;
+	return 0;
+}
+
+static int
+qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
+{
+	if (np->tbl->family == AF_INET)
+		np->neigh_setup = qeth_l3_neigh_setup_noarp;
+
+	return 0;
+}
+
+static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
+						    struct net_device *dev,
+						    netdev_features_t features)
+{
+	if (vlan_get_protocol(skb) != htons(ETH_P_IP))
+		features &= ~NETIF_F_HW_VLAN_CTAG_TX;
+	return qeth_features_check(skb, dev, features);
+}
+
+static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
+				    struct net_device *sb_dev)
+{
+	return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb),
+				     sb_dev);
+}
+
+static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
+				    struct net_device *sb_dev)
+{
+	struct qeth_card *card = dev->ml_priv;
+
+	if (qeth_uses_tx_prio_queueing(card))
+		return qeth_get_priority_queue(card, skb);
+
+	return netdev_pick_tx(dev, skb, sb_dev);
+}
+
+static const struct net_device_ops qeth_l3_netdev_ops = {
+	.ndo_open		= qeth_open,
+	.ndo_stop		= qeth_stop,
+	.ndo_get_stats64	= qeth_get_stats64,
+	.ndo_start_xmit		= qeth_l3_hard_start_xmit,
+	.ndo_select_queue	= qeth_l3_iqd_select_queue,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_rx_mode	= qeth_l3_set_rx_mode,
+	.ndo_do_ioctl		= qeth_do_ioctl,
+	.ndo_fix_features	= qeth_fix_features,
+	.ndo_set_features	= qeth_set_features,
+	.ndo_vlan_rx_add_vid	= qeth_l3_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
+	.ndo_tx_timeout		= qeth_tx_timeout,
+};
+
+static const struct net_device_ops qeth_l3_osa_netdev_ops = {
+	.ndo_open		= qeth_open,
+	.ndo_stop		= qeth_stop,
+	.ndo_get_stats64	= qeth_get_stats64,
+	.ndo_start_xmit		= qeth_l3_hard_start_xmit,
+	.ndo_features_check	= qeth_l3_osa_features_check,
+	.ndo_select_queue	= qeth_l3_osa_select_queue,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_rx_mode	= qeth_l3_set_rx_mode,
+	.ndo_do_ioctl		= qeth_do_ioctl,
+	.ndo_fix_features	= qeth_fix_features,
+	.ndo_set_features	= qeth_set_features,
+	.ndo_vlan_rx_add_vid	= qeth_l3_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
+	.ndo_tx_timeout		= qeth_tx_timeout,
+	.ndo_neigh_setup	= qeth_l3_neigh_setup,
+};
+
+static int qeth_l3_setup_netdev(struct qeth_card *card)
+{
+	struct net_device *dev = card->dev;
+	unsigned int headroom;
+	int rc;
+
+	if (IS_OSD(card) || IS_OSX(card)) {
+		card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
+
+		/*IPv6 address autoconfiguration stuff*/
+		dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
+
+		if (!IS_VM_NIC(card)) {
+			card->dev->features |= NETIF_F_SG;
+			card->dev->hw_features |= NETIF_F_TSO |
+				NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
+			card->dev->vlan_features |= NETIF_F_TSO |
+				NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
+		}
+
+		if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
+			card->dev->hw_features |= NETIF_F_IPV6_CSUM;
+			card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
+		}
+		if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
+			card->dev->hw_features |= NETIF_F_TSO6;
+			card->dev->vlan_features |= NETIF_F_TSO6;
+		}
+
+		/* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
+		if (card->dev->hw_features & NETIF_F_TSO6)
+			headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
+		else if (card->dev->hw_features & NETIF_F_TSO)
+			headroom = sizeof(struct qeth_hdr_tso);
+		else
+			headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
+	} else if (IS_IQD(card)) {
+		card->dev->flags |= IFF_NOARP;
+		card->dev->netdev_ops = &qeth_l3_netdev_ops;
+		headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
+
+		rc = qeth_l3_iqd_read_initial_mac(card);
+		if (rc)
+			return rc;
+	} else
+		return -ENODEV;
+
+	card->dev->needed_headroom = headroom;
+	card->dev->features |=	NETIF_F_HW_VLAN_CTAG_TX |
+				NETIF_F_HW_VLAN_CTAG_RX |
+				NETIF_F_HW_VLAN_CTAG_FILTER;
+
+	netif_keep_dst(card->dev);
+	if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
+		netif_set_gso_max_size(card->dev,
+				       PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
+
+	netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
+	return register_netdev(card->dev);
+}
+
+static const struct device_type qeth_l3_devtype = {
+	.name = "qeth_layer3",
+	.groups = qeth_l3_attr_groups,
+};
+
+static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+	int rc;
+
+	hash_init(card->ip_htable);
+	mutex_init(&card->ip_lock);
+	card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
+					       dev_name(&gdev->dev));
+	if (!card->cmd_wq)
+		return -ENOMEM;
+
+	if (gdev->dev.type == &qeth_generic_devtype) {
+		rc = qeth_l3_create_device_attributes(&gdev->dev);
+		if (rc) {
+			destroy_workqueue(card->cmd_wq);
+			return rc;
+		}
+	}
+
+	INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
+	return 0;
+}
+
+static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
+
+	if (cgdev->dev.type == &qeth_generic_devtype)
+		qeth_l3_remove_device_attributes(&cgdev->dev);
+
+	qeth_set_allowed_threads(card, 0, 1);
+	wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
+
+	if (cgdev->state == CCWGROUP_ONLINE)
+		qeth_set_offline(card, card->discipline, false);
+
+	cancel_work_sync(&card->close_dev_work);
+	if (card->dev->reg_state == NETREG_REGISTERED)
+		unregister_netdev(card->dev);
+
+	flush_workqueue(card->cmd_wq);
+	destroy_workqueue(card->cmd_wq);
+	qeth_l3_clear_ip_htable(card, 0);
+	qeth_l3_clear_ipato_list(card);
+}
+
+static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok)
+{
+	struct net_device *dev = card->dev;
+	int rc = 0;
+
+	/* softsetup */
+	QETH_CARD_TEXT(card, 2, "softsetp");
+
+	rc = qeth_l3_setadapter_parms(card);
+	if (rc)
+		QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
+	if (!card->options.sniffer) {
+		qeth_l3_start_ipassists(card);
+
+		rc = qeth_l3_setrouting_v4(card);
+		if (rc)
+			QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
+		rc = qeth_l3_setrouting_v6(card);
+		if (rc)
+			QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
+	}
+
+	card->state = CARD_STATE_SOFTSETUP;
+
+	qeth_set_allowed_threads(card, 0xffffffff, 0);
+	qeth_l3_recover_ip(card);
+
+	if (dev->reg_state != NETREG_REGISTERED) {
+		rc = qeth_l3_setup_netdev(card);
+		if (rc)
+			goto err_setup;
+
+		if (carrier_ok)
+			netif_carrier_on(dev);
+	} else {
+		rtnl_lock();
+		rc = qeth_set_real_num_tx_queues(card,
+						 qeth_tx_actual_queues(card));
+		if (rc) {
+			rtnl_unlock();
+			goto err_set_queues;
+		}
+
+		if (carrier_ok)
+			netif_carrier_on(dev);
+		else
+			netif_carrier_off(dev);
+
+		netif_device_attach(dev);
+		qeth_enable_hw_features(dev);
+
+		if (netif_running(dev)) {
+			local_bh_disable();
+			napi_schedule(&card->napi);
+			/* kick-start the NAPI softirq: */
+			local_bh_enable();
+		}
+		rtnl_unlock();
+	}
+	return 0;
+
+err_set_queues:
+err_setup:
+	qeth_set_allowed_threads(card, 0, 1);
+	card->state = CARD_STATE_DOWN;
+	qeth_l3_clear_ip_htable(card, 1);
+	return rc;
+}
+
+static void qeth_l3_set_offline(struct qeth_card *card)
+{
+	qeth_set_allowed_threads(card, 0, 1);
+	qeth_l3_drain_rx_mode_cache(card);
+
+	if (card->options.sniffer &&
+	    (card->info.promisc_mode == SET_PROMISC_MODE_ON))
+		qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
+
+	if (card->state == CARD_STATE_SOFTSETUP) {
+		card->state = CARD_STATE_DOWN;
+		qeth_l3_clear_ip_htable(card, 1);
+	}
+}
+
+/* Returns zero if the command is successfully "consumed" */
+static int qeth_l3_control_event(struct qeth_card *card,
+					struct qeth_ipa_cmd *cmd)
+{
+	return 1;
+}
+
+const struct qeth_discipline qeth_l3_discipline = {
+	.devtype = &qeth_l3_devtype,
+	.setup = qeth_l3_probe_device,
+	.remove = qeth_l3_remove_device,
+	.set_online = qeth_l3_set_online,
+	.set_offline = qeth_l3_set_offline,
+	.do_ioctl = qeth_l3_do_ioctl,
+	.control_event_handler = qeth_l3_control_event,
+};
+EXPORT_SYMBOL_GPL(qeth_l3_discipline);
+
+static int qeth_l3_handle_ip_event(struct qeth_card *card,
+				   struct qeth_ipaddr *addr,
+				   unsigned long event)
+{
+	switch (event) {
+	case NETDEV_UP:
+		qeth_l3_modify_ip(card, addr, true);
+		return NOTIFY_OK;
+	case NETDEV_DOWN:
+		qeth_l3_modify_ip(card, addr, false);
+		return NOTIFY_OK;
+	default:
+		return NOTIFY_DONE;
+	}
+}
+
+struct qeth_l3_ip_event_work {
+	struct work_struct work;
+	struct qeth_card *card;
+	struct qeth_ipaddr addr;
+};
+
+#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
+
+static void qeth_l3_add_ip_worker(struct work_struct *work)
+{
+	struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
+
+	qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
+	kfree(work);
+}
+
+static void qeth_l3_delete_ip_worker(struct work_struct *work)
+{
+	struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
+
+	qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
+	kfree(work);
+}
+
+static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
+{
+	if (is_vlan_dev(dev))
+		dev = vlan_dev_real_dev(dev);
+	if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
+	    dev->netdev_ops == &qeth_l3_netdev_ops)
+		return (struct qeth_card *) dev->ml_priv;
+	return NULL;
+}
+
+static int qeth_l3_ip_event(struct notifier_block *this,
+			    unsigned long event, void *ptr)
+{
+	struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+	struct net_device *dev = ifa->ifa_dev->dev;
+	struct qeth_ipaddr addr;
+	struct qeth_card *card;
+
+	card = qeth_l3_get_card_from_dev(dev);
+	if (!card)
+		return NOTIFY_DONE;
+	QETH_CARD_TEXT(card, 3, "ipevent");
+
+	qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
+	addr.u.a4.addr = ifa->ifa_address;
+	addr.u.a4.mask = ifa->ifa_mask;
+
+	return qeth_l3_handle_ip_event(card, &addr, event);
+}
+
+static struct notifier_block qeth_l3_ip_notifier = {
+	qeth_l3_ip_event,
+	NULL,
+};
+
+static int qeth_l3_ip6_event(struct notifier_block *this,
+			     unsigned long event, void *ptr)
+{
+	struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
+	struct net_device *dev = ifa->idev->dev;
+	struct qeth_l3_ip_event_work *ip_work;
+	struct qeth_card *card;
+
+	if (event != NETDEV_UP && event != NETDEV_DOWN)
+		return NOTIFY_DONE;
+
+	card = qeth_l3_get_card_from_dev(dev);
+	if (!card)
+		return NOTIFY_DONE;
+	QETH_CARD_TEXT(card, 3, "ip6event");
+	if (!qeth_is_supported(card, IPA_IPV6))
+		return NOTIFY_DONE;
+
+	ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
+	if (!ip_work)
+		return NOTIFY_DONE;
+
+	if (event == NETDEV_UP)
+		INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
+	else
+		INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
+
+	ip_work->card = card;
+	qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
+			    QETH_PROT_IPV6);
+	ip_work->addr.u.a6.addr = ifa->addr;
+	ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
+
+	queue_work(card->cmd_wq, &ip_work->work);
+	return NOTIFY_OK;
+}
+
+static struct notifier_block qeth_l3_ip6_notifier = {
+	qeth_l3_ip6_event,
+	NULL,
+};
+
+static int qeth_l3_register_notifiers(void)
+{
+	int rc;
+
+	QETH_DBF_TEXT(SETUP, 5, "regnotif");
+	rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
+	if (rc)
+		return rc;
+	rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
+	if (rc) {
+		unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
+		return rc;
+	}
+	return 0;
+}
+
+static void qeth_l3_unregister_notifiers(void)
+{
+	QETH_DBF_TEXT(SETUP, 5, "unregnot");
+	WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
+	WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
+}
+
+static int __init qeth_l3_init(void)
+{
+	pr_info("register layer 3 discipline\n");
+	return qeth_l3_register_notifiers();
+}
+
+static void __exit qeth_l3_exit(void)
+{
+	qeth_l3_unregister_notifiers();
+	pr_info("unregister layer 3 discipline\n");
+}
+
+module_init(qeth_l3_init);
+module_exit(qeth_l3_exit);
+MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
+MODULE_DESCRIPTION("qeth layer 3 discipline");
+MODULE_LICENSE("GPL");