/*
 *    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/mii.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/inetdevice.h>
#include <linux/igmp.h>
#include <linux/slab.h>
#include <linux/if_vlan.h>

#include <net/ip.h>
#include <net/arp.h>
#include <net/route.h>
#include <net/ip6_fib.h>
#include <net/ip6_checksum.h>
#include <net/iucv/af_iucv.h>

#include "qeth_l3.h"


static int qeth_l3_set_offline(struct ccwgroup_device *);
static int qeth_l3_recover(void *);
static int qeth_l3_stop(struct net_device *);
static void qeth_l3_set_multicast_list(struct net_device *);
static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
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 *);
static int __qeth_l3_set_online(struct ccwgroup_device *, int);
static int __qeth_l3_set_offline(struct ccwgroup_device *, int);

static int qeth_l3_isxdigit(char *buf)
{
	while (*buf) {
		if (!isxdigit(*buf++))
			return 0;
	}
	return 1;
}

void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
{
	sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
}

int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
{
	int count = 0, rc = 0;
	int in[4];
	char c;

	rc = sscanf(buf, "%u.%u.%u.%u%c",
		    &in[0], &in[1], &in[2], &in[3], &c);
	if (rc != 4 && (rc != 5 || c != '\n'))
		return -EINVAL;
	for (count = 0; count < 4; count++) {
		if (in[count] > 255)
			return -EINVAL;
		addr[count] = in[count];
	}
	return 0;
}

void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
{
	sprintf(buf, "%pI6", addr);
}

int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
{
	const char *end, *end_tmp, *start;
	__u16 *in;
	char num[5];
	int num2, cnt, out, found, save_cnt;
	unsigned short in_tmp[8] = {0, };

	cnt = out = found = save_cnt = num2 = 0;
	end = start = buf;
	in = (__u16 *) addr;
	memset(in, 0, 16);
	while (*end) {
		end = strchr(start, ':');
		if (end == NULL) {
			end = buf + strlen(buf);
			end_tmp = strchr(start, '\n');
			if (end_tmp != NULL)
				end = end_tmp;
			out = 1;
		}
		if ((end - start)) {
			memset(num, 0, 5);
			if ((end - start) > 4)
				return -EINVAL;
			memcpy(num, start, end - start);
			if (!qeth_l3_isxdigit(num))
				return -EINVAL;
			sscanf(start, "%x", &num2);
			if (found)
				in_tmp[save_cnt++] = num2;
			else
				in[cnt++] = num2;
			if (out)
				break;
		} else {
			if (found)
				return -EINVAL;
			found = 1;
		}
		start = ++end;
	}
	if (cnt + save_cnt > 8)
		return -EINVAL;
	cnt = 7;
	while (save_cnt)
		in[cnt--] = in_tmp[--save_cnt];
	return 0;
}

void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
				char *buf)
{
	if (proto == QETH_PROT_IPV4)
		qeth_l3_ipaddr4_to_string(addr, buf);
	else if (proto == QETH_PROT_IPV6)
		qeth_l3_ipaddr6_to_string(addr, buf);
}

int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
				__u8 *addr)
{
	if (proto == QETH_PROT_IPV4)
		return qeth_l3_string_to_ipaddr4(buf, addr);
	else if (proto == QETH_PROT_IPV6)
		return qeth_l3_string_to_ipaddr6(buf, addr);
	else
		return -EINVAL;
}

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;
		}
	}
}

int 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 0;

	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,
				     min(32, ipatoe->mask_bits));
		else
			rc = !memcmp(addr_bits, ipatoe_bits,
				     min(128, 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;
}

/*
 * Add IP to be added to todo list. If there is already an "add todo"
 * in this list we just incremenent the reference count.
 * Returns 0 if we  just incremented reference count.
 */
static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
					struct qeth_ipaddr *addr, int add)
{
	struct qeth_ipaddr *tmp, *t;
	int found = 0;

	if (card->options.sniffer)
		return 0;
	list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
		if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
		    (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
			return 0;
		if ((tmp->proto        == QETH_PROT_IPV4)     &&
		    (addr->proto       == QETH_PROT_IPV4)     &&
		    (tmp->type         == addr->type)         &&
		    (tmp->is_multicast == addr->is_multicast) &&
		    (tmp->u.a4.addr    == addr->u.a4.addr)    &&
		    (tmp->u.a4.mask    == addr->u.a4.mask)) {
			found = 1;
			break;
		}
		if ((tmp->proto        == QETH_PROT_IPV6)      &&
		    (addr->proto       == QETH_PROT_IPV6)      &&
		    (tmp->type         == addr->type)          &&
		    (tmp->is_multicast == addr->is_multicast)  &&
		    (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
		    (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
			    sizeof(struct in6_addr)) == 0)) {
			found = 1;
			break;
		}
	}
	if (found) {
		if (addr->users != 0)
			tmp->users += addr->users;
		else
			tmp->users += add ? 1 : -1;
		if (tmp->users == 0) {
			list_del(&tmp->entry);
			kfree(tmp);
		}
		return 0;
	} else {
		if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
			list_add(&addr->entry, card->ip_tbd_list);
		else {
			if (addr->users == 0)
				addr->users += add ? 1 : -1;
			if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
			    qeth_l3_is_addr_covered_by_ipato(card, addr)) {
				QETH_CARD_TEXT(card, 2, "tkovaddr");
				addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
			}
			list_add_tail(&addr->entry, card->ip_tbd_list);
		}
		return 1;
	}
}

int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
	unsigned long flags;
	int rc = 0;

	QETH_CARD_TEXT(card, 4, "delip");

	if (addr->proto == QETH_PROT_IPV4)
		QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
	else {
		QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
		QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
	}
	spin_lock_irqsave(&card->ip_lock, flags);
	rc = __qeth_l3_insert_ip_todo(card, addr, 0);
	spin_unlock_irqrestore(&card->ip_lock, flags);
	return rc;
}

int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
	unsigned long flags;
	int rc = 0;

	QETH_CARD_TEXT(card, 4, "addip");
	if (addr->proto == QETH_PROT_IPV4)
		QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
	else {
		QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
		QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
	}
	spin_lock_irqsave(&card->ip_lock, flags);
	rc = __qeth_l3_insert_ip_todo(card, addr, 1);
	spin_unlock_irqrestore(&card->ip_lock, flags);
	return rc;
}


struct qeth_ipaddr *qeth_l3_get_addr_buffer(
				enum qeth_prot_versions prot)
{
	struct qeth_ipaddr *addr;

	addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
	if (addr == NULL) {
		return NULL;
	}
	addr->type = QETH_IP_TYPE_NORMAL;
	addr->proto = prot;
	return addr;
}

static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
{
	struct qeth_ipaddr *iptodo;
	unsigned long flags;

	QETH_CARD_TEXT(card, 4, "delmc");
	iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
	if (!iptodo) {
		QETH_CARD_TEXT(card, 2, "dmcnomem");
		return;
	}
	iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
	spin_lock_irqsave(&card->ip_lock, flags);
	if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
		kfree(iptodo);
	spin_unlock_irqrestore(&card->ip_lock, flags);
}

/*
 * Add/remove address to/from card's ip list, i.e. try to add or remove
 * reference to/from an IP address that is already registered on the card.
 * Returns:
 *	0  address was on card and its reference count has been adjusted,
 *	   but is still > 0, so nothing has to be done
 *	   also returns 0 if card was not on card and the todo was to delete
 *	   the address -> there is also nothing to be done
 *	1  address was not on card and the todo is to add it to the card's ip
 *	   list
 *	-1 address was on card and its reference count has been decremented
 *	   to <= 0 by the todo -> address must be removed from card
 */
static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
		struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
{
	struct qeth_ipaddr *addr;
	int found = 0;

	list_for_each_entry(addr, &card->ip_list, entry) {
		if ((addr->proto == QETH_PROT_IPV4) &&
		    (todo->proto == QETH_PROT_IPV4) &&
		    (addr->type == todo->type) &&
		    (addr->u.a4.addr == todo->u.a4.addr) &&
		    (addr->u.a4.mask == todo->u.a4.mask)) {
			found = 1;
			break;
		}
		if ((addr->proto == QETH_PROT_IPV6) &&
		    (todo->proto == QETH_PROT_IPV6) &&
		    (addr->type == todo->type) &&
		    (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
		    (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
			    sizeof(struct in6_addr)) == 0)) {
			found = 1;
			break;
		}
	}
	if (found) {
		addr->users += todo->users;
		if (addr->users <= 0) {
			*__addr = addr;
			return -1;
		} else {
			/* for VIPA and RXIP limit refcount to 1 */
			if (addr->type != QETH_IP_TYPE_NORMAL)
				addr->users = 1;
			return 0;
		}
	}
	if (todo->users > 0) {
		/* for VIPA and RXIP limit refcount to 1 */
		if (todo->type != QETH_IP_TYPE_NORMAL)
			todo->users = 1;
		return 1;
	} else
		return 0;
}

static void __qeth_l3_delete_all_mc(struct qeth_card *card,
					unsigned long *flags)
{
	struct list_head fail_list;
	struct qeth_ipaddr *addr, *tmp;
	int rc;

	INIT_LIST_HEAD(&fail_list);
again:
	list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
		if (addr->is_multicast) {
			list_del(&addr->entry);
			spin_unlock_irqrestore(&card->ip_lock, *flags);
			rc = qeth_l3_deregister_addr_entry(card, addr);
			spin_lock_irqsave(&card->ip_lock, *flags);
			if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
				kfree(addr);
			else
				list_add_tail(&addr->entry, &fail_list);
			goto again;
		}
	}
	list_splice(&fail_list, &card->ip_list);
}

void qeth_l3_set_ip_addr_list(struct qeth_card *card)
{
	struct list_head *tbd_list;
	struct qeth_ipaddr *todo, *addr;
	unsigned long flags;
	int rc;

	QETH_CARD_TEXT(card, 2, "sdiplist");
	QETH_CARD_HEX(card, 2, &card, sizeof(void *));

	if ((card->state != CARD_STATE_UP &&
	     card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
		return;
	}

	spin_lock_irqsave(&card->ip_lock, flags);
	tbd_list = card->ip_tbd_list;
	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
	if (!card->ip_tbd_list) {
		QETH_CARD_TEXT(card, 0, "silnomem");
		card->ip_tbd_list = tbd_list;
		spin_unlock_irqrestore(&card->ip_lock, flags);
		return;
	} else
		INIT_LIST_HEAD(card->ip_tbd_list);

	while (!list_empty(tbd_list)) {
		todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
		list_del(&todo->entry);
		if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
			__qeth_l3_delete_all_mc(card, &flags);
			kfree(todo);
			continue;
		}
		rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
		if (rc == 0) {
			/* nothing to be done; only adjusted refcount */
			kfree(todo);
		} else if (rc == 1) {
			/* new entry to be added to on-card list */
			spin_unlock_irqrestore(&card->ip_lock, flags);
			rc = qeth_l3_register_addr_entry(card, todo);
			spin_lock_irqsave(&card->ip_lock, flags);
			if (!rc || (rc == IPA_RC_LAN_OFFLINE))
				list_add_tail(&todo->entry, &card->ip_list);
			else
				kfree(todo);
		} else if (rc == -1) {
			/* on-card entry to be removed */
			list_del_init(&addr->entry);
			spin_unlock_irqrestore(&card->ip_lock, flags);
			rc = qeth_l3_deregister_addr_entry(card, addr);
			spin_lock_irqsave(&card->ip_lock, flags);
			if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
				kfree(addr);
			else
				list_add_tail(&addr->entry, &card->ip_list);
			kfree(todo);
		}
	}
	spin_unlock_irqrestore(&card->ip_lock, flags);
	kfree(tbd_list);
}

static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
{
	struct qeth_ipaddr *addr, *tmp;
	unsigned long flags;

	QETH_CARD_TEXT(card, 4, "clearip");
	if (recover && card->options.sniffer)
		return;
	spin_lock_irqsave(&card->ip_lock, flags);
	/* clear todo list */
	list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
		list_del(&addr->entry);
		kfree(addr);
	}

	while (!list_empty(&card->ip_list)) {
		addr = list_entry(card->ip_list.next,
				  struct qeth_ipaddr, entry);
		list_del_init(&addr->entry);
		if (!recover || addr->is_multicast) {
			kfree(addr);
			continue;
		}
		list_add_tail(&addr->entry, card->ip_tbd_list);
	}
	spin_unlock_irqrestore(&card->ip_lock, flags);
}

static int qeth_l3_address_exists_in_list(struct list_head *list,
		struct qeth_ipaddr *addr, int same_type)
{
	struct qeth_ipaddr *tmp;

	list_for_each_entry(tmp, list, entry) {
		if ((tmp->proto == QETH_PROT_IPV4) &&
		    (addr->proto == QETH_PROT_IPV4) &&
		    ((same_type && (tmp->type == addr->type)) ||
		    (!same_type && (tmp->type != addr->type))) &&
		    (tmp->u.a4.addr == addr->u.a4.addr))
			return 1;

		if ((tmp->proto == QETH_PROT_IPV6) &&
		    (addr->proto == QETH_PROT_IPV6) &&
		    ((same_type && (tmp->type == addr->type)) ||
		    (!same_type && (tmp->type != addr->type))) &&
		    (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
			    sizeof(struct in6_addr)) == 0))
			return 1;

	}
	return 0;
}

static int qeth_l3_send_setdelmc(struct qeth_card *card,
			struct qeth_ipaddr *addr, int ipacmd)
{
	int rc;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	QETH_CARD_TEXT(card, 4, "setdelmc");

	iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
	if (addr->proto == QETH_PROT_IPV6)
		memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
		       sizeof(struct in6_addr));
	else
		memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);

	rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

	return rc;
}

static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
{
	int i, j;
	for (i = 0; i < 16; i++) {
		j = (len) - (i * 8);
		if (j >= 8)
			netmask[i] = 0xff;
		else if (j > 0)
			netmask[i] = (u8)(0xFF00 >> j);
		else
			netmask[i] = 0;
	}
}

static int qeth_l3_send_setdelip(struct qeth_card *card,
		struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
{
	int rc;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;
	__u8 netmask[16];

	QETH_CARD_TEXT(card, 4, "setdelip");
	QETH_CARD_TEXT_(card, 4, "flags%02X", flags);

	iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	if (addr->proto == QETH_PROT_IPV6) {
		memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
		       sizeof(struct in6_addr));
		qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
		memcpy(cmd->data.setdelip6.mask, netmask,
		       sizeof(struct in6_addr));
		cmd->data.setdelip6.flags = flags;
	} else {
		memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
		memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
		cmd->data.setdelip4.flags = flags;
	}

	rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

	return rc;
}

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_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	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 (card->info.type == QETH_CARD_TYPE_IQD) {
		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 (0x%04x) while setting routing type"
			" on %s. Type set to 'no router'.\n", rc,
			QETH_CARD_IFNAME(card));
	}
	return rc;
}

int qeth_l3_setrouting_v6(struct qeth_card *card)
{
	int rc = 0;

	QETH_CARD_TEXT(card, 3, "setrtg6");
#ifdef CONFIG_QETH_IPV6

	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 (0x%04x) while setting routing type"
			" on %s. Type set to 'no router'.\n", rc,
			QETH_CARD_IFNAME(card));
	}
#endif
	return rc;
}

/*
 * IP address takeover related functions
 */
static void qeth_l3_clear_ipato_list(struct qeth_card *card)
{

	struct qeth_ipato_entry *ipatoe, *tmp;
	unsigned long flags;

	spin_lock_irqsave(&card->ip_lock, flags);
	list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
		list_del(&ipatoe->entry);
		kfree(ipatoe);
	}
	spin_unlock_irqrestore(&card->ip_lock, flags);
}

int qeth_l3_add_ipato_entry(struct qeth_card *card,
				struct qeth_ipato_entry *new)
{
	struct qeth_ipato_entry *ipatoe;
	unsigned long flags;
	int rc = 0;

	QETH_CARD_TEXT(card, 2, "addipato");
	spin_lock_irqsave(&card->ip_lock, flags);
	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);

	spin_unlock_irqrestore(&card->ip_lock, flags);
	return rc;
}

void qeth_l3_del_ipato_entry(struct qeth_card *card,
		enum qeth_prot_versions proto, u8 *addr, int mask_bits)
{
	struct qeth_ipato_entry *ipatoe, *tmp;
	unsigned long flags;

	QETH_CARD_TEXT(card, 2, "delipato");
	spin_lock_irqsave(&card->ip_lock, flags);
	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);
			kfree(ipatoe);
		}
	}
	spin_unlock_irqrestore(&card->ip_lock, flags);
}

/*
 * VIPA related functions
 */
int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
	      const u8 *addr)
{
	struct qeth_ipaddr *ipaddr;
	unsigned long flags;
	int rc = 0;

	ipaddr = qeth_l3_get_addr_buffer(proto);
	if (ipaddr) {
		if (proto == QETH_PROT_IPV4) {
			QETH_CARD_TEXT(card, 2, "addvipa4");
			memcpy(&ipaddr->u.a4.addr, addr, 4);
			ipaddr->u.a4.mask = 0;
		} else if (proto == QETH_PROT_IPV6) {
			QETH_CARD_TEXT(card, 2, "addvipa6");
			memcpy(&ipaddr->u.a6.addr, addr, 16);
			ipaddr->u.a6.pfxlen = 0;
		}
		ipaddr->type = QETH_IP_TYPE_VIPA;
		ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
		ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
	} else
		return -ENOMEM;
	spin_lock_irqsave(&card->ip_lock, flags);
	if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
	    qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
		rc = -EEXIST;
	spin_unlock_irqrestore(&card->ip_lock, flags);
	if (rc) {
		kfree(ipaddr);
		return rc;
	}
	if (!qeth_l3_add_ip(card, ipaddr))
		kfree(ipaddr);
	qeth_l3_set_ip_addr_list(card);
	return rc;
}

void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
	      const u8 *addr)
{
	struct qeth_ipaddr *ipaddr;

	ipaddr = qeth_l3_get_addr_buffer(proto);
	if (ipaddr) {
		if (proto == QETH_PROT_IPV4) {
			QETH_CARD_TEXT(card, 2, "delvipa4");
			memcpy(&ipaddr->u.a4.addr, addr, 4);
			ipaddr->u.a4.mask = 0;
		} else if (proto == QETH_PROT_IPV6) {
			QETH_CARD_TEXT(card, 2, "delvipa6");
			memcpy(&ipaddr->u.a6.addr, addr, 16);
			ipaddr->u.a6.pfxlen = 0;
		}
		ipaddr->type = QETH_IP_TYPE_VIPA;
	} else
		return;
	if (!qeth_l3_delete_ip(card, ipaddr))
		kfree(ipaddr);
	qeth_l3_set_ip_addr_list(card);
}

/*
 * proxy ARP related functions
 */
int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
	      const u8 *addr)
{
	struct qeth_ipaddr *ipaddr;
	unsigned long flags;
	int rc = 0;

	ipaddr = qeth_l3_get_addr_buffer(proto);
	if (ipaddr) {
		if (proto == QETH_PROT_IPV4) {
			QETH_CARD_TEXT(card, 2, "addrxip4");
			memcpy(&ipaddr->u.a4.addr, addr, 4);
			ipaddr->u.a4.mask = 0;
		} else if (proto == QETH_PROT_IPV6) {
			QETH_CARD_TEXT(card, 2, "addrxip6");
			memcpy(&ipaddr->u.a6.addr, addr, 16);
			ipaddr->u.a6.pfxlen = 0;
		}
		ipaddr->type = QETH_IP_TYPE_RXIP;
		ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
		ipaddr->del_flags = 0;
	} else
		return -ENOMEM;
	spin_lock_irqsave(&card->ip_lock, flags);
	if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
	    qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
		rc = -EEXIST;
	spin_unlock_irqrestore(&card->ip_lock, flags);
	if (rc) {
		kfree(ipaddr);
		return rc;
	}
	if (!qeth_l3_add_ip(card, ipaddr))
		kfree(ipaddr);
	qeth_l3_set_ip_addr_list(card);
	return 0;
}

void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
			const u8 *addr)
{
	struct qeth_ipaddr *ipaddr;

	ipaddr = qeth_l3_get_addr_buffer(proto);
	if (ipaddr) {
		if (proto == QETH_PROT_IPV4) {
			QETH_CARD_TEXT(card, 2, "addrxip4");
			memcpy(&ipaddr->u.a4.addr, addr, 4);
			ipaddr->u.a4.mask = 0;
		} else if (proto == QETH_PROT_IPV6) {
			QETH_CARD_TEXT(card, 2, "addrxip6");
			memcpy(&ipaddr->u.a6.addr, addr, 16);
			ipaddr->u.a6.pfxlen = 0;
		}
		ipaddr->type = QETH_IP_TYPE_RXIP;
	} else
		return;
	if (!qeth_l3_delete_ip(card, ipaddr))
		kfree(ipaddr);
	qeth_l3_set_ip_addr_list(card);
}

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 (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,
					addr->set_flags);
		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 (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,
					addr->del_flags);
	if (rc)
		QETH_CARD_TEXT(card, 2, "failed");

	return rc;
}

static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
{
	if (cast_type == RTN_MULTICAST)
		return QETH_CAST_MULTICAST;
	if (cast_type == RTN_BROADCAST)
		return QETH_CAST_BROADCAST;
	return QETH_CAST_UNICAST;
}

static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
{
	u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
	if (cast_type == RTN_MULTICAST)
		return ct | QETH_CAST_MULTICAST;
	if (cast_type == RTN_ANYCAST)
		return ct | QETH_CAST_ANYCAST;
	if (cast_type == RTN_BROADCAST)
		return ct | QETH_CAST_BROADCAST;
	return ct | QETH_CAST_UNICAST;
}

static int qeth_l3_setadapter_parms(struct qeth_card *card)
{
	int rc;

	QETH_DBF_TEXT(SETUP, 2, "setadprm");

	if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
		dev_info(&card->gdev->dev,
			"set adapter parameters not supported.\n");
		QETH_DBF_TEXT(SETUP, 2, " notsupp");
		return 0;
	}
	rc = qeth_query_setadapterparms(card);
	if (rc) {
		QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
			"0x%x\n", dev_name(&card->gdev->dev), rc);
		return rc;
	}
	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_default_setassparms_cb(struct qeth_card *card,
			struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

	QETH_CARD_TEXT(card, 4, "defadpcb");

	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code == 0) {
		cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
		if (cmd->hdr.prot_version == QETH_PROT_IPV4)
			card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
		if (cmd->hdr.prot_version == QETH_PROT_IPV6)
			card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
	}
	if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
	    cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
		card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
		QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
	}
	if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
	    cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
		card->info.tx_csum_mask =
			cmd->data.setassparms.data.flags_32bit;
		QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
	}

	return 0;
}

static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
	struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
	__u16 len, enum qeth_prot_versions prot)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	QETH_CARD_TEXT(card, 4, "getasscm");
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);

	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.setassparms.hdr.assist_no = ipa_func;
	cmd->data.setassparms.hdr.length = 8 + len;
	cmd->data.setassparms.hdr.command_code = cmd_code;
	cmd->data.setassparms.hdr.return_code = 0;
	cmd->data.setassparms.hdr.seq_no = 0;

	return iob;
}

static int qeth_l3_send_setassparms(struct qeth_card *card,
	struct qeth_cmd_buffer *iob, __u16 len, long data,
	int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
		unsigned long),
	void *reply_param)
{
	int rc;
	struct qeth_ipa_cmd *cmd;

	QETH_CARD_TEXT(card, 4, "sendassp");

	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	if (len <= sizeof(__u32))
		cmd->data.setassparms.data.flags_32bit = (__u32) data;
	else   /* (len > sizeof(__u32)) */
		memcpy(&cmd->data.setassparms.data, (void *) data, len);

	rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
	return rc;
}

#ifdef CONFIG_QETH_IPV6
static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
		enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
{
	int rc;
	struct qeth_cmd_buffer *iob;

	QETH_CARD_TEXT(card, 4, "simassp6");
	iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
				       0, QETH_PROT_IPV6);
	rc = qeth_l3_send_setassparms(card, iob, 0, 0,
				   qeth_l3_default_setassparms_cb, NULL);
	return rc;
}
#endif

static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
		enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
{
	int rc;
	int length = 0;
	struct qeth_cmd_buffer *iob;

	QETH_CARD_TEXT(card, 4, "simassp4");
	if (data)
		length = sizeof(__u32);
	iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
				       length, QETH_PROT_IPV4);
	rc = qeth_l3_send_setassparms(card, iob, length, data,
				   qeth_l3_default_setassparms_cb, NULL);
	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",
			QETH_CARD_IFNAME(card));
		return 0;
	}
	rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
					IPA_CMD_ASS_START, 0);
	if (rc) {
		dev_warn(&card->gdev->dev,
			"Starting ARP processing support for %s failed\n",
			QETH_CARD_IFNAME(card));
	}
	return rc;
}

static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
{
	int rc;

	QETH_CARD_TEXT(card, 3, "ipaipfrg");

	if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
		dev_info(&card->gdev->dev,
			"Hardware IP fragmentation not supported on %s\n",
			QETH_CARD_IFNAME(card));
		return  -EOPNOTSUPP;
	}

	rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
					  IPA_CMD_ASS_START, 0);
	if (rc) {
		dev_warn(&card->gdev->dev,
			"Starting IP fragmentation support for %s failed\n",
			QETH_CARD_IFNAME(card));
	} else
		dev_info(&card->gdev->dev,
			"Hardware IP fragmentation enabled \n");
	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",
			QETH_CARD_IFNAME(card));
		return -EOPNOTSUPP;
	}

	rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
					  IPA_CMD_ASS_START, 0);
	if (rc)
		dev_warn(&card->gdev->dev,
			"Starting source MAC-address support for %s failed\n",
			QETH_CARD_IFNAME(card));
	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", QETH_CARD_IFNAME(card));
		return -EOPNOTSUPP;
	}

	rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
					  IPA_CMD_ASS_START, 0);
	if (rc) {
		dev_warn(&card->gdev->dev,
			"Starting VLAN support for %s failed\n",
			QETH_CARD_IFNAME(card));
	} 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",
			QETH_CARD_IFNAME(card));
		return -EOPNOTSUPP;
	}

	rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
					  IPA_CMD_ASS_START, 0);
	if (rc) {
		dev_warn(&card->gdev->dev,
			"Starting multicast support for %s failed\n",
			QETH_CARD_IFNAME(card));
	} else {
		dev_info(&card->gdev->dev, "Multicast enabled\n");
		card->dev->flags |= IFF_MULTICAST;
	}
	return rc;
}

#ifdef CONFIG_QETH_IPV6
static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
{
	int rc;

	QETH_CARD_TEXT(card, 3, "softipv6");

	if (card->info.type == QETH_CARD_TYPE_IQD)
		goto out;

	rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
	if (rc) {
		dev_err(&card->gdev->dev,
			"Activating IPv6 support for %s failed\n",
			QETH_CARD_IFNAME(card));
		return rc;
	}
	rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
					  IPA_CMD_ASS_START, 3);
	if (rc) {
		dev_err(&card->gdev->dev,
			"Activating IPv6 support for %s failed\n",
			QETH_CARD_IFNAME(card));
		return rc;
	}
	rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
					       IPA_CMD_ASS_START);
	if (rc) {
		dev_err(&card->gdev->dev,
			"Activating IPv6 support for %s failed\n",
			 QETH_CARD_IFNAME(card));
		return rc;
	}
	rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
					       IPA_CMD_ASS_START);
	if (rc) {
		dev_warn(&card->gdev->dev,
			"Enabling the passthrough mode for %s failed\n",
			QETH_CARD_IFNAME(card));
		return rc;
	}
out:
	dev_info(&card->gdev->dev, "IPV6 enabled\n");
	return 0;
}
#endif

static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
{
	int rc = 0;

	QETH_CARD_TEXT(card, 3, "strtipv6");

	if (!qeth_is_supported(card, IPA_IPV6)) {
		dev_info(&card->gdev->dev,
			"IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
		return 0;
	}
#ifdef CONFIG_QETH_IPV6
	rc = qeth_l3_softsetup_ipv6(card);
#endif
	return rc ;
}

static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
{
	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",
			QETH_CARD_IFNAME(card));
		rc = -EOPNOTSUPP;
		goto out;
	}
	rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
					  IPA_CMD_ASS_START, 0);
	if (rc) {
		dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
			"%s failed\n", QETH_CARD_IFNAME(card));
		goto out;
	}

	rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
					  IPA_CMD_ASS_CONFIGURE, 1);
	if (rc) {
		dev_warn(&card->gdev->dev,
			"Setting up broadcast filtering for %s failed\n",
			QETH_CARD_IFNAME(card));
		goto out;
	}
	card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
	dev_info(&card->gdev->dev, "Broadcast enabled\n");
	rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
					  IPA_CMD_ASS_ENABLE, 1);
	if (rc) {
		dev_warn(&card->gdev->dev, "Setting up broadcast echo "
			"filtering for %s failed\n", QETH_CARD_IFNAME(card));
		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 int qeth_l3_send_checksum_command(struct qeth_card *card)
{
	int rc;

	rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
					  IPA_CMD_ASS_START, 0);
	if (rc) {
		dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
			"failed, using SW checksumming\n",
			QETH_CARD_IFNAME(card));
		return rc;
	}
	rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
					  IPA_CMD_ASS_ENABLE,
					  card->info.csum_mask);
	if (rc) {
		dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
			"failed, using SW checksumming\n",
			QETH_CARD_IFNAME(card));
		return rc;
	}
	return 0;
}

static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
{
	int rc = 0;

	if (on) {
		rc = qeth_l3_send_checksum_command(card);
		if (rc)
			return -EIO;
		dev_info(&card->gdev->dev,
			"HW Checksumming (inbound) enabled\n");
	} else {
		rc = qeth_l3_send_simple_setassparms(card,
			IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
		if (rc)
			return -EIO;
	}

	return 0;
}

static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
{
	QETH_CARD_TEXT(card, 3, "strtcsum");

	if (card->dev->features & NETIF_F_RXCSUM) {
		rtnl_lock();
		/* force set_features call */
		card->dev->features &= ~NETIF_F_RXCSUM;
		netdev_update_features(card->dev);
		rtnl_unlock();
	}
	return 0;
}

static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
{
	int rc = 0;

	if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
		return rc;
	rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
			  IPA_CMD_ASS_START, 0);
	if (rc)
		goto err_out;
	rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
			  IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
	if (rc)
		goto err_out;
	dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
	return rc;
err_out:
	dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
		"failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
	return rc;
}

static int qeth_l3_start_ipa_tso(struct qeth_card *card)
{
	int rc;

	QETH_CARD_TEXT(card, 3, "sttso");

	if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
		dev_info(&card->gdev->dev,
			"Outbound TSO not supported on %s\n",
			QETH_CARD_IFNAME(card));
		rc = -EOPNOTSUPP;
	} else {
		rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
						IPA_CMD_ASS_START, 0);
		if (rc)
			dev_warn(&card->gdev->dev, "Starting outbound TCP "
				"segmentation offload for %s failed\n",
				QETH_CARD_IFNAME(card));
		else
			dev_info(&card->gdev->dev,
				"Outbound TSO enabled\n");
	}
	if (rc)
		card->dev->features &= ~NETIF_F_TSO;
	return rc;
}

static int qeth_l3_start_ipassists(struct qeth_card *card)
{
	QETH_CARD_TEXT(card, 3, "strtipas");

	if (qeth_set_access_ctrl_online(card, 0))
		return -EIO;
	qeth_l3_start_ipa_arp_processing(card);	/* go on*/
	qeth_l3_start_ipa_ip_fragmentation(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*/
	qeth_l3_start_ipa_checksum(card);		/* go on*/
	qeth_l3_start_ipa_tx_checksum(card);
	qeth_l3_start_ipa_tso(card);		/* go on*/
	return 0;
}

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;

	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code == 0)
		memcpy(card->dev->dev_addr,
			cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
	else
		eth_random_addr(card->dev->dev_addr);

	return 0;
}

static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
{
	int rc = 0;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	QETH_DBF_TEXT(SETUP, 2, "hsrmac");

	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
				     QETH_PROT_IPV6);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	*((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
			card->info.unique_id;

	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;

	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code == 0)
		card->info.unique_id = *((__u16 *)
				&cmd->data.create_destroy_addr.unique_id[6]);
	else {
		card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
					UNIQUE_ID_NOT_BY_CARD;
		dev_warn(&card->gdev->dev, "The network adapter failed to "
			"generate a unique ID\n");
	}
	return 0;
}

static int qeth_l3_get_unique_id(struct qeth_card *card)
{
	int rc = 0;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	QETH_DBF_TEXT(SETUP, 2, "guniqeid");

	if (!qeth_is_supported(card, IPA_IPV6)) {
		card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
					UNIQUE_ID_NOT_BY_CARD;
		return 0;
	}

	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
				     QETH_PROT_IPV6);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	*((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
			card->info.unique_id;

	rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
	return rc;
}

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_DBF_TEXT(SETUP, 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 (0x%04x) on %s\n",
			cmd->data.diagass.action, QETH_CARD_IFNAME(card));
	}

	return 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_DBF_TEXT(SETUP, 2, "diagtrac");

	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.diagass.subcmd_len = 16;
	cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
	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 void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
				struct net_device *dev)
{
	ip_eth_mc_map(ipm, mac);
}

static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
{
	struct qeth_ipaddr *ipm;
	struct ip_mc_list *im4;
	char buf[MAX_ADDR_LEN];

	QETH_CARD_TEXT(card, 4, "addmc");
	for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
	     im4 = rcu_dereference(im4->next_rcu)) {
		qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
		ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
		if (!ipm)
			continue;
		ipm->u.a4.addr = im4->multiaddr;
		memcpy(ipm->mac, buf, OSA_ADDR_LEN);
		ipm->is_multicast = 1;
		if (!qeth_l3_add_ip(card, ipm))
			kfree(ipm);
	}
}

/* called with rcu_read_lock */
static void qeth_l3_add_vlan_mc(struct qeth_card *card)
{
	struct in_device *in_dev;
	u16 vid;

	QETH_CARD_TEXT(card, 4, "addmcvl");
	if (!qeth_is_supported(card, IPA_FULL_VLAN))
		return;

	for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
		struct net_device *netdev;

		netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q),
					      vid);
		if (netdev == NULL ||
		    !(netdev->flags & IFF_UP))
			continue;
		in_dev = __in_dev_get_rcu(netdev);
		if (!in_dev)
			continue;
		qeth_l3_add_mc(card, in_dev);
	}
}

static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
{
	struct in_device *in4_dev;

	QETH_CARD_TEXT(card, 4, "chkmcv4");
	rcu_read_lock();
	in4_dev = __in_dev_get_rcu(card->dev);
	if (in4_dev == NULL)
		goto unlock;
	qeth_l3_add_mc(card, in4_dev);
	qeth_l3_add_vlan_mc(card);
unlock:
	rcu_read_unlock();
}

#ifdef CONFIG_QETH_IPV6
static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
{
	struct qeth_ipaddr *ipm;
	struct ifmcaddr6 *im6;
	char buf[MAX_ADDR_LEN];

	QETH_CARD_TEXT(card, 4, "addmc6");
	for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
		ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
		ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
		if (!ipm)
			continue;
		ipm->is_multicast = 1;
		memcpy(ipm->mac, buf, OSA_ADDR_LEN);
		memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
		       sizeof(struct in6_addr));
		if (!qeth_l3_add_ip(card, ipm))
			kfree(ipm);
	}
}

/* called with rcu_read_lock */
static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
{
	struct inet6_dev *in_dev;
	u16 vid;

	QETH_CARD_TEXT(card, 4, "admc6vl");
	if (!qeth_is_supported(card, IPA_FULL_VLAN))
		return;

	for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
		struct net_device *netdev;

		netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q),
					      vid);
		if (netdev == NULL ||
		    !(netdev->flags & IFF_UP))
			continue;
		in_dev = in6_dev_get(netdev);
		if (!in_dev)
			continue;
		read_lock_bh(&in_dev->lock);
		qeth_l3_add_mc6(card, in_dev);
		read_unlock_bh(&in_dev->lock);
		in6_dev_put(in_dev);
	}
}

static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
{
	struct inet6_dev *in6_dev;

	QETH_CARD_TEXT(card, 4, "chkmcv6");
	if (!qeth_is_supported(card, IPA_IPV6))
		return ;
	in6_dev = in6_dev_get(card->dev);
	if (in6_dev == NULL)
		return;
	rcu_read_lock();
	read_lock_bh(&in6_dev->lock);
	qeth_l3_add_mc6(card, in6_dev);
	qeth_l3_add_vlan_mc6(card);
	read_unlock_bh(&in6_dev->lock);
	rcu_read_unlock();
	in6_dev_put(in6_dev);
}
#endif /* CONFIG_QETH_IPV6 */

static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
			unsigned short vid)
{
	struct in_device *in_dev;
	struct in_ifaddr *ifa;
	struct qeth_ipaddr *addr;
	struct net_device *netdev;

	QETH_CARD_TEXT(card, 4, "frvaddr4");

	netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q), vid);
	if (!netdev)
		return;
	in_dev = in_dev_get(netdev);
	if (!in_dev)
		return;
	for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
		addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
		if (addr) {
			addr->u.a4.addr = ifa->ifa_address;
			addr->u.a4.mask = ifa->ifa_mask;
			addr->type = QETH_IP_TYPE_NORMAL;
			if (!qeth_l3_delete_ip(card, addr))
				kfree(addr);
		}
	}
	in_dev_put(in_dev);
}

static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
			unsigned short vid)
{
#ifdef CONFIG_QETH_IPV6
	struct inet6_dev *in6_dev;
	struct inet6_ifaddr *ifa;
	struct qeth_ipaddr *addr;
	struct net_device *netdev;

	QETH_CARD_TEXT(card, 4, "frvaddr6");

	netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q), vid);
	if (!netdev)
		return;
	in6_dev = in6_dev_get(netdev);
	if (!in6_dev)
		return;
	list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
		addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
		if (addr) {
			memcpy(&addr->u.a6.addr, &ifa->addr,
			       sizeof(struct in6_addr));
			addr->u.a6.pfxlen = ifa->prefix_len;
			addr->type = QETH_IP_TYPE_NORMAL;
			if (!qeth_l3_delete_ip(card, addr))
				kfree(addr);
		}
	}
	in6_dev_put(in6_dev);
#endif /* CONFIG_QETH_IPV6 */
}

static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
			unsigned short vid)
{
	rcu_read_lock();
	qeth_l3_free_vlan_addresses4(card, vid);
	qeth_l3_free_vlan_addresses6(card, vid);
	rcu_read_unlock();
}

static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
				   __be16 proto, u16 vid)
{
	struct qeth_card *card = dev->ml_priv;

	set_bit(vid, card->active_vlans);
	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;
	unsigned long flags;

	QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
		QETH_CARD_TEXT(card, 3, "kidREC");
		return 0;
	}
	spin_lock_irqsave(&card->vlanlock, flags);
	/* unregister IP addresses of vlan device */
	qeth_l3_free_vlan_addresses(card, vid);
	clear_bit(vid, card->active_vlans);
	spin_unlock_irqrestore(&card->vlanlock, flags);
	qeth_l3_set_multicast_list(card->dev);
	return 0;
}

static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
			struct sk_buff *skb, struct qeth_hdr *hdr,
			unsigned short *vlan_id)
{
	__be16 prot;
	struct iphdr *ip_hdr;
	unsigned char tg_addr[MAX_ADDR_LEN];
	int is_vlan = 0;

	if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
		prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
			      ETH_P_IP);
		switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
		case QETH_CAST_MULTICAST:
			switch (prot) {
#ifdef CONFIG_QETH_IPV6
			case __constant_htons(ETH_P_IPV6):
				ndisc_mc_map((struct in6_addr *)
				     skb->data + 24,
				     tg_addr, card->dev, 0);
				break;
#endif
			case __constant_htons(ETH_P_IP):
				ip_hdr = (struct iphdr *)skb->data;
				ip_eth_mc_map(ip_hdr->daddr, tg_addr);
				break;
			default:
				memcpy(tg_addr, card->dev->broadcast,
					card->dev->addr_len);
			}
			card->stats.multicast++;
			skb->pkt_type = PACKET_MULTICAST;
			break;
		case QETH_CAST_BROADCAST:
			memcpy(tg_addr, card->dev->broadcast,
				card->dev->addr_len);
			card->stats.multicast++;
			skb->pkt_type = PACKET_BROADCAST;
			break;
		case QETH_CAST_UNICAST:
		case QETH_CAST_ANYCAST:
		case QETH_CAST_NOCAST:
		default:
			if (card->options.sniffer)
				skb->pkt_type = PACKET_OTHERHOST;
			else
				skb->pkt_type = PACKET_HOST;
			memcpy(tg_addr, card->dev->dev_addr,
				card->dev->addr_len);
		}
		if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
			card->dev->header_ops->create(skb, card->dev, prot,
				tg_addr, &hdr->hdr.l3.dest_addr[2],
				card->dev->addr_len);
		else
			card->dev->header_ops->create(skb, card->dev, prot,
				tg_addr, "FAKELL", card->dev->addr_len);
	}

	skb->protocol = eth_type_trans(skb, card->dev);

	if (hdr->hdr.l3.ext_flags &
	    (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
		*vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
		 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
		is_vlan = 1;
	}

	if (card->dev->features & NETIF_F_RXCSUM) {
		if ((hdr->hdr.l3.ext_flags &
		    (QETH_HDR_EXT_CSUM_HDR_REQ |
		     QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
		    (QETH_HDR_EXT_CSUM_HDR_REQ |
		     QETH_HDR_EXT_CSUM_TRANSP_REQ))
			skb->ip_summed = CHECKSUM_UNNECESSARY;
		else
			skb->ip_summed = CHECKSUM_NONE;
	} else
		skb->ip_summed = CHECKSUM_NONE;

	return is_vlan;
}

static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
				int budget, int *done)
{
	int work_done = 0;
	struct sk_buff *skb;
	struct qeth_hdr *hdr;
	__u16 vlan_tag = 0;
	int is_vlan;
	unsigned int len;
	__u16 magic;

	*done = 0;
	WARN_ON_ONCE(!budget);
	while (budget) {
		skb = qeth_core_get_next_skb(card,
			&card->qdio.in_q->bufs[card->rx.b_index],
			&card->rx.b_element, &card->rx.e_offset, &hdr);
		if (!skb) {
			*done = 1;
			break;
		}
		skb->dev = card->dev;
		switch (hdr->hdr.l3.id) {
		case QETH_HEADER_TYPE_LAYER3:
			magic = *(__u16 *)skb->data;
			if ((card->info.type == QETH_CARD_TYPE_IQD) &&
			    (magic == ETH_P_AF_IUCV)) {
				skb->protocol = ETH_P_AF_IUCV;
				skb->pkt_type = PACKET_HOST;
				skb->mac_header = NET_SKB_PAD;
				skb->dev = card->dev;
				len = skb->len;
				card->dev->header_ops->create(skb, card->dev, 0,
					card->dev->dev_addr, "FAKELL",
					card->dev->addr_len);
				netif_receive_skb(skb);
			} else {
				is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
						      &vlan_tag);
				len = skb->len;
				if (is_vlan && !card->options.sniffer)
					__vlan_hwaccel_put_tag(skb,
						htons(ETH_P_8021Q), vlan_tag);
				napi_gro_receive(&card->napi, skb);
			}
			break;
		case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
			skb->pkt_type = PACKET_HOST;
			skb->protocol = eth_type_trans(skb, skb->dev);
			len = skb->len;
			netif_receive_skb(skb);
			break;
		default:
			dev_kfree_skb_any(skb);
			QETH_CARD_TEXT(card, 3, "inbunkno");
			QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
			continue;
		}
		work_done++;
		budget--;
		card->stats.rx_packets++;
		card->stats.rx_bytes += len;
	}
	return work_done;
}

static int qeth_l3_poll(struct napi_struct *napi, int budget)
{
	struct qeth_card *card = container_of(napi, struct qeth_card, napi);
	int work_done = 0;
	struct qeth_qdio_buffer *buffer;
	int done;
	int new_budget = budget;

	if (card->options.performance_stats) {
		card->perf_stats.inbound_cnt++;
		card->perf_stats.inbound_start_time = qeth_get_micros();
	}

	while (1) {
		if (!card->rx.b_count) {
			card->rx.qdio_err = 0;
			card->rx.b_count = qdio_get_next_buffers(
				card->data.ccwdev, 0, &card->rx.b_index,
				&card->rx.qdio_err);
			if (card->rx.b_count <= 0) {
				card->rx.b_count = 0;
				break;
			}
			card->rx.b_element =
				&card->qdio.in_q->bufs[card->rx.b_index]
				.buffer->element[0];
			card->rx.e_offset = 0;
		}

		while (card->rx.b_count) {
			buffer = &card->qdio.in_q->bufs[card->rx.b_index];
			if (!(card->rx.qdio_err &&
			    qeth_check_qdio_errors(card, buffer->buffer,
			    card->rx.qdio_err, "qinerr")))
				work_done += qeth_l3_process_inbound_buffer(
					card, new_budget, &done);
			else
				done = 1;

			if (done) {
				if (card->options.performance_stats)
					card->perf_stats.bufs_rec++;
				qeth_put_buffer_pool_entry(card,
					buffer->pool_entry);
				qeth_queue_input_buffer(card, card->rx.b_index);
				card->rx.b_count--;
				if (card->rx.b_count) {
					card->rx.b_index =
						(card->rx.b_index + 1) %
						QDIO_MAX_BUFFERS_PER_Q;
					card->rx.b_element =
						&card->qdio.in_q
						->bufs[card->rx.b_index]
						.buffer->element[0];
					card->rx.e_offset = 0;
				}
			}

			if (work_done >= budget)
				goto out;
			else
				new_budget = budget - work_done;
		}
	}

	napi_complete(napi);
	if (qdio_start_irq(card->data.ccwdev, 0))
		napi_schedule(&card->napi);
out:
	if (card->options.performance_stats)
		card->perf_stats.inbound_time += qeth_get_micros() -
			card->perf_stats.inbound_start_time;
	return work_done;
}

static int qeth_l3_verify_vlan_dev(struct net_device *dev,
			struct qeth_card *card)
{
	int rc = 0;
	u16 vid;

	for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
		struct net_device *netdev;

		rcu_read_lock();
		netdev = __vlan_find_dev_deep(card->dev, htons(ETH_P_8021Q),
					      vid);
		rcu_read_unlock();
		if (netdev == dev) {
			rc = QETH_VLAN_CARD;
			break;
		}
	}

	if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
		return 0;

	return rc;
}

static int qeth_l3_verify_dev(struct net_device *dev)
{
	struct qeth_card *card;
	unsigned long flags;
	int rc = 0;

	read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
	list_for_each_entry(card, &qeth_core_card_list.list, list) {
		if (card->dev == dev) {
			rc = QETH_REAL_CARD;
			break;
		}
		rc = qeth_l3_verify_vlan_dev(dev, card);
		if (rc)
			break;
	}
	read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);

	return rc;
}

static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
{
	struct qeth_card *card = NULL;
	int rc;

	rc = qeth_l3_verify_dev(dev);
	if (rc == QETH_REAL_CARD)
		card = dev->ml_priv;
	else if (rc == QETH_VLAN_CARD)
		card = vlan_dev_real_dev(dev)->ml_priv;
	if (card && card->options.layer2)
		card = NULL;
	if (card)
		QETH_CARD_TEXT_(card, 4, "%d", rc);
	return card ;
}

static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
{
	int rc = 0;

	QETH_DBF_TEXT(SETUP, 2, "stopcard");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));

	qeth_set_allowed_threads(card, 0, 1);
	if (card->options.sniffer &&
	    (card->info.promisc_mode == SET_PROMISC_MODE_ON))
		qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
	if (card->read.state == CH_STATE_UP &&
	    card->write.state == CH_STATE_UP &&
	    (card->state == CARD_STATE_UP)) {
		if (recovery_mode)
			qeth_l3_stop(card->dev);
		else {
			rtnl_lock();
			dev_close(card->dev);
			rtnl_unlock();
		}
		card->state = CARD_STATE_SOFTSETUP;
	}
	if (card->state == CARD_STATE_SOFTSETUP) {
		qeth_l3_clear_ip_list(card, 1);
		qeth_clear_ipacmd_list(card);
		card->state = CARD_STATE_HARDSETUP;
	}
	if (card->state == CARD_STATE_HARDSETUP) {
		qeth_qdio_clear_card(card, 0);
		qeth_clear_qdio_buffers(card);
		qeth_clear_working_pool_list(card);
		card->state = CARD_STATE_DOWN;
	}
	if (card->state == CARD_STATE_DOWN) {
		qeth_clear_cmd_buffers(&card->read);
		qeth_clear_cmd_buffers(&card->write);
	}
	return rc;
}

/*
 * test for and Switch promiscuous mode (on or off)
 *  either for guestlan or HiperSocket Sniffer
 */
static void
qeth_l3_handle_promisc_mode(struct qeth_card *card)
{
	struct net_device *dev = card->dev;

	if (((dev->flags & IFF_PROMISC) &&
	     (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
	    (!(dev->flags & IFF_PROMISC) &&
	     (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
		return;

	if (card->info.guestlan) {		/* Guestlan trace */
		if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
			qeth_setadp_promisc_mode(card);
	} else if (card->options.sniffer &&	/* HiperSockets trace */
		   qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
		if (dev->flags & IFF_PROMISC) {
			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_set_multicast_list(struct net_device *dev)
{
	struct qeth_card *card = dev->ml_priv;

	QETH_CARD_TEXT(card, 3, "setmulti");
	if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
	    (card->state != CARD_STATE_UP))
		return;
	if (!card->options.sniffer) {
		qeth_l3_delete_mc_addresses(card);
		qeth_l3_add_multicast_ipv4(card);
#ifdef CONFIG_QETH_IPV6
		qeth_l3_add_multicast_ipv6(card);
#endif
		qeth_l3_set_ip_addr_list(card);
		if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
			return;
	}
	qeth_l3_handle_promisc_mode(card);
}

static const char *qeth_l3_arp_get_error_cause(int *rc)
{
	switch (*rc) {
	case QETH_IPA_ARP_RC_FAILED:
		*rc = -EIO;
		return "operation failed";
	case QETH_IPA_ARP_RC_NOTSUPP:
		*rc = -EOPNOTSUPP;
		return "operation not supported";
	case QETH_IPA_ARP_RC_OUT_OF_RANGE:
		*rc = -EINVAL;
		return "argument out of range";
	case QETH_IPA_ARP_RC_Q_NOTSUPP:
		*rc = -EOPNOTSUPP;
		return "query operation not supported";
	case QETH_IPA_ARP_RC_Q_NO_DATA:
		*rc = -ENOENT;
		return "no query data available";
	default:
		return "unknown error";
	}
}

static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
{
	int tmp;
	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 (card->info.guestlan)
		return -EOPNOTSUPP;
	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
		return -EOPNOTSUPP;
	}
	rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
					  IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
					  no_entries);
	if (rc) {
		tmp = rc;
		QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
			"%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
			qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
	}
	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 i;
	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 0;
	}
	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 0;
	}
	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", -ENOMEM);
			cmd->hdr.return_code = IPA_RC_ENOMEM;
			goto out_error;
		}

		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;
out_error:
	i = 0;
	memcpy(qinfo->udata, &i, 4);
	return 0;
}

static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
		struct qeth_cmd_buffer *iob, int len,
		int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
			unsigned long),
		void *reply_param)
{
	QETH_CARD_TEXT(card, 4, "sendarp");

	memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
	memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
	       &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
	return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
				      reply_cb, reply_param);
}

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 tmp;
	int rc;

	QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);

	iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
			IPA_CMD_ASS_ARP_QUERY_INFO,
			sizeof(struct qeth_arp_query_data) - sizeof(char),
			prot);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
	cmd->data.setassparms.data.query_arp.reply_bits = 0;
	cmd->data.setassparms.data.query_arp.no_entries = 0;
	rc = qeth_l3_send_ipa_arp_cmd(card, iob,
			   QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
			   qeth_l3_arp_query_cb, (void *)qinfo);
	if (rc) {
		tmp = rc;
		QETH_DBF_MESSAGE(2,
			"Error while querying ARP cache on %s: %s "
			"(0x%x/%d)\n", QETH_CARD_IFNAME(card),
			qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
	}

	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.