dirty fix to merging

1 files changed, 1349 insertions, 0 deletions

diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
new file mode 100644
index 00000000..0e7c29d1
--- /dev/null
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -0,0 +1,1349 @@
+/*
+ *  drivers/s390/net/qeth_l2_main.c
+ *
+ *    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/string.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/etherdevice.h>
+#include <linux/mii.h>
+#include <linux/ip.h>
+#include <linux/list.h>
+
+#include "qeth_core.h"
+
+static int qeth_l2_set_offline(struct ccwgroup_device *);
+static int qeth_l2_stop(struct net_device *);
+static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
+static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
+			   enum qeth_ipa_cmds,
+			   int (*reply_cb) (struct qeth_card *,
+					    struct qeth_reply*,
+					    unsigned long));
+static void qeth_l2_set_multicast_list(struct net_device *);
+static int qeth_l2_recover(void *);
+
+static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	struct qeth_card *card = dev->ml_priv;
+	struct mii_ioctl_data *mii_data;
+	int rc = 0;
+
+	if (!card)
+		return -ENODEV;
+
+	if ((card->state != CARD_STATE_UP) &&
+		(card->state != CARD_STATE_SOFTSETUP))
+		return -ENODEV;
+
+	if (card->info.type == QETH_CARD_TYPE_OSN)
+		return -EPERM;
+
+	switch (cmd) {
+	case SIOC_QETH_ADP_SET_SNMP_CONTROL:
+		rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
+		break;
+	case SIOC_QETH_GET_CARD_TYPE:
+		if ((card->info.type == QETH_CARD_TYPE_OSD ||
+		     card->info.type == QETH_CARD_TYPE_OSM ||
+		     card->info.type == QETH_CARD_TYPE_OSX) &&
+		    !card->info.guestlan)
+			return 1;
+		return 0;
+		break;
+	case SIOCGMIIPHY:
+		mii_data = if_mii(rq);
+		mii_data->phy_id = 0;
+		break;
+	case SIOCGMIIREG:
+		mii_data = if_mii(rq);
+		if (mii_data->phy_id != 0)
+			rc = -EINVAL;
+		else
+			mii_data->val_out = qeth_mdio_read(dev,
+				mii_data->phy_id, mii_data->reg_num);
+		break;
+	case SIOC_QETH_QUERY_OAT:
+		rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
+		break;
+	default:
+		rc = -EOPNOTSUPP;
+	}
+	if (rc)
+		QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
+	return rc;
+}
+
+static int qeth_l2_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;
+		}
+	}
+	read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
+
+	return rc;
+}
+
+static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
+{
+	struct qeth_card *card;
+	struct net_device *ndev;
+	__u16 temp_dev_no;
+	unsigned long flags;
+	struct ccw_dev_id read_devid;
+
+	ndev = NULL;
+	memcpy(&temp_dev_no, read_dev_no, 2);
+	read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
+	list_for_each_entry(card, &qeth_core_card_list.list, list) {
+		ccw_device_get_id(CARD_RDEV(card), &read_devid);
+		if (read_devid.devno == temp_dev_no) {
+			ndev = card->dev;
+			break;
+		}
+	}
+	read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
+	return ndev;
+}
+
+static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
+				struct qeth_reply *reply,
+				unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd;
+	__u8 *mac;
+
+	QETH_CARD_TEXT(card, 2, "L2Sgmacb");
+	cmd = (struct qeth_ipa_cmd *) data;
+	mac = &cmd->data.setdelmac.mac[0];
+	/* MAC already registered, needed in couple/uncouple case */
+	if (cmd->hdr.return_code ==  IPA_RC_L2_DUP_MAC) {
+		QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
+			  mac, QETH_CARD_IFNAME(card));
+		cmd->hdr.return_code = 0;
+	}
+	if (cmd->hdr.return_code)
+		QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
+			  mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
+	return 0;
+}
+
+static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
+{
+	QETH_CARD_TEXT(card, 2, "L2Sgmac");
+	return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
+					  qeth_l2_send_setgroupmac_cb);
+}
+
+static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
+				struct qeth_reply *reply,
+				unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd;
+	__u8 *mac;
+
+	QETH_CARD_TEXT(card, 2, "L2Dgmacb");
+	cmd = (struct qeth_ipa_cmd *) data;
+	mac = &cmd->data.setdelmac.mac[0];
+	if (cmd->hdr.return_code)
+		QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
+			  mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
+	return 0;
+}
+
+static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
+{
+	QETH_CARD_TEXT(card, 2, "L2Dgmac");
+	return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
+					  qeth_l2_send_delgroupmac_cb);
+}
+
+static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
+{
+	struct qeth_mc_mac *mc;
+	int rc;
+
+	mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
+
+	if (!mc)
+		return;
+
+	memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
+	mc->mc_addrlen = OSA_ADDR_LEN;
+	mc->is_vmac = vmac;
+
+	if (vmac) {
+		rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
+					NULL);
+	} else {
+		rc = qeth_l2_send_setgroupmac(card, mac);
+	}
+
+	if (!rc)
+		list_add_tail(&mc->list, &card->mc_list);
+	else
+		kfree(mc);
+}
+
+static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
+{
+	struct qeth_mc_mac *mc, *tmp;
+
+	spin_lock_bh(&card->mclock);
+	list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
+		if (del) {
+			if (mc->is_vmac)
+				qeth_l2_send_setdelmac(card, mc->mc_addr,
+					IPA_CMD_DELVMAC, NULL);
+			else
+				qeth_l2_send_delgroupmac(card, mc->mc_addr);
+		}
+		list_del(&mc->list);
+		kfree(mc);
+	}
+	spin_unlock_bh(&card->mclock);
+}
+
+static inline int qeth_l2_get_cast_type(struct qeth_card *card,
+			struct sk_buff *skb)
+{
+	if (card->info.type == QETH_CARD_TYPE_OSN)
+		return RTN_UNSPEC;
+	if (is_broadcast_ether_addr(skb->data))
+		return RTN_BROADCAST;
+	if (is_multicast_ether_addr(skb->data))
+		return RTN_MULTICAST;
+	return RTN_UNSPEC;
+}
+
+static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
+			struct sk_buff *skb, int ipv, int cast_type)
+{
+	struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
+
+	memset(hdr, 0, sizeof(struct qeth_hdr));
+	hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
+
+	/* set byte byte 3 to casting flags */
+	if (cast_type == RTN_MULTICAST)
+		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
+	else if (cast_type == RTN_BROADCAST)
+		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
+	else
+		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
+
+	hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
+	/* VSWITCH relies on the VLAN
+	 * information to be present in
+	 * the QDIO header */
+	if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
+		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
+		hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
+	}
+}
+
+static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
+			struct qeth_reply *reply, unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd;
+
+	QETH_CARD_TEXT(card, 2, "L2sdvcb");
+	cmd = (struct qeth_ipa_cmd *) data;
+	if (cmd->hdr.return_code) {
+		QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
+			  "Continuing\n", cmd->data.setdelvlan.vlan_id,
+			  QETH_CARD_IFNAME(card), cmd->hdr.return_code);
+		QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
+		QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
+	}
+	return 0;
+}
+
+static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
+				enum qeth_ipa_cmds ipacmd)
+{
+	struct qeth_ipa_cmd *cmd;
+	struct qeth_cmd_buffer *iob;
+
+	QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
+	iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
+	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+	cmd->data.setdelvlan.vlan_id = i;
+	return qeth_send_ipa_cmd(card, iob,
+				 qeth_l2_send_setdelvlan_cb, NULL);
+}
+
+static void qeth_l2_process_vlans(struct qeth_card *card)
+{
+	struct qeth_vlan_vid *id;
+	QETH_CARD_TEXT(card, 3, "L2prcvln");
+	spin_lock_bh(&card->vlanlock);
+	list_for_each_entry(id, &card->vid_list, list) {
+		qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
+	}
+	spin_unlock_bh(&card->vlanlock);
+}
+
+static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+	struct qeth_card *card = dev->ml_priv;
+	struct qeth_vlan_vid *id;
+
+	QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
+	if (!vid)
+		return 0;
+	if (card->info.type == QETH_CARD_TYPE_OSM) {
+		QETH_CARD_TEXT(card, 3, "aidOSM");
+		return 0;
+	}
+	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
+		QETH_CARD_TEXT(card, 3, "aidREC");
+		return 0;
+	}
+	id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
+	if (id) {
+		id->vid = vid;
+		qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
+		spin_lock_bh(&card->vlanlock);
+		list_add_tail(&id->list, &card->vid_list);
+		spin_unlock_bh(&card->vlanlock);
+	} else {
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+	struct qeth_vlan_vid *id, *tmpid = NULL;
+	struct qeth_card *card = dev->ml_priv;
+
+	QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
+	if (card->info.type == QETH_CARD_TYPE_OSM) {
+		QETH_CARD_TEXT(card, 3, "kidOSM");
+		return 0;
+	}
+	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
+		QETH_CARD_TEXT(card, 3, "kidREC");
+		return 0;
+	}
+	spin_lock_bh(&card->vlanlock);
+	list_for_each_entry(id, &card->vid_list, list) {
+		if (id->vid == vid) {
+			list_del(&id->list);
+			tmpid = id;
+			break;
+		}
+	}
+	spin_unlock_bh(&card->vlanlock);
+	if (tmpid) {
+		qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
+		kfree(tmpid);
+	}
+	qeth_l2_set_multicast_list(card->dev);
+	return 0;
+}
+
+static int qeth_l2_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->read.state == CH_STATE_UP &&
+	    card->write.state == CH_STATE_UP &&
+	    (card->state == CARD_STATE_UP)) {
+		if (recovery_mode &&
+		    card->info.type != QETH_CARD_TYPE_OSN) {
+			qeth_l2_stop(card->dev);
+		} else {
+			rtnl_lock();
+			dev_close(card->dev);
+			rtnl_unlock();
+		}
+		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
+		card->state = CARD_STATE_SOFTSETUP;
+	}
+	if (card->state == CARD_STATE_SOFTSETUP) {
+		qeth_l2_del_all_mc(card, 0);
+		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;
+}
+
+static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
+				int budget, int *done)
+{
+	int work_done = 0;
+	struct sk_buff *skb;
+	struct qeth_hdr *hdr;
+	unsigned int len;
+
+	*done = 0;
+	BUG_ON(!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.l2.id) {
+		case QETH_HEADER_TYPE_LAYER2:
+			skb->pkt_type = PACKET_HOST;
+			skb->protocol = eth_type_trans(skb, skb->dev);
+			skb->ip_summed = CHECKSUM_NONE;
+			if (skb->protocol == htons(ETH_P_802_2))
+				*((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
+			len = skb->len;
+			netif_receive_skb(skb);
+			break;
+		case QETH_HEADER_TYPE_OSN:
+			if (card->info.type == QETH_CARD_TYPE_OSN) {
+				skb_push(skb, sizeof(struct qeth_hdr));
+				skb_copy_to_linear_data(skb, hdr,
+						sizeof(struct qeth_hdr));
+				len = skb->len;
+				card->osn_info.data_cb(skb);
+				break;
+			}
+			/* else unknown */
+		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_l2_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_l2_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_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
+			   enum qeth_ipa_cmds ipacmd,
+			   int (*reply_cb) (struct qeth_card *,
+					    struct qeth_reply*,
+					    unsigned long))
+{
+	struct qeth_ipa_cmd *cmd;
+	struct qeth_cmd_buffer *iob;
+
+	QETH_CARD_TEXT(card, 2, "L2sdmac");
+	iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
+	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+	cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
+	memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
+	return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
+}
+
+static int qeth_l2_send_setmac_cb(struct qeth_card *card,
+			   struct qeth_reply *reply,
+			   unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd;
+
+	QETH_CARD_TEXT(card, 2, "L2Smaccb");
+	cmd = (struct qeth_ipa_cmd *) data;
+	if (cmd->hdr.return_code) {
+		QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
+		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
+		switch (cmd->hdr.return_code) {
+		case IPA_RC_L2_DUP_MAC:
+		case IPA_RC_L2_DUP_LAYER3_MAC:
+			dev_warn(&card->gdev->dev,
+				"MAC address %pM already exists\n",
+				cmd->data.setdelmac.mac);
+			break;
+		case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
+		case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
+			dev_warn(&card->gdev->dev,
+				"MAC address %pM is not authorized\n",
+				cmd->data.setdelmac.mac);
+			break;
+		default:
+			break;
+		}
+	} else {
+		card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
+		memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
+		       OSA_ADDR_LEN);
+		dev_info(&card->gdev->dev,
+			"MAC address %pM successfully registered on device %s\n",
+			card->dev->dev_addr, card->dev->name);
+	}
+	return 0;
+}
+
+static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
+{
+	QETH_CARD_TEXT(card, 2, "L2Setmac");
+	return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
+					  qeth_l2_send_setmac_cb);
+}
+
+static int qeth_l2_send_delmac_cb(struct qeth_card *card,
+			   struct qeth_reply *reply,
+			   unsigned long data)
+{
+	struct qeth_ipa_cmd *cmd;
+
+	QETH_CARD_TEXT(card, 2, "L2Dmaccb");
+	cmd = (struct qeth_ipa_cmd *) data;
+	if (cmd->hdr.return_code) {
+		QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
+		return 0;
+	}
+	card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
+
+	return 0;
+}
+
+static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
+{
+	QETH_CARD_TEXT(card, 2, "L2Delmac");
+	if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
+		return 0;
+	return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
+					  qeth_l2_send_delmac_cb);
+}
+
+static int qeth_l2_request_initial_mac(struct qeth_card *card)
+{
+	int rc = 0;
+	char vendor_pre[] = {0x02, 0x00, 0x00};
+
+	QETH_DBF_TEXT(SETUP, 2, "doL2init");
+	QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
+
+	rc = qeth_query_setadapterparms(card);
+	if (rc) {
+		QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
+			"device %s: x%x\n", CARD_BUS_ID(card), rc);
+	}
+
+	if (card->info.type == QETH_CARD_TYPE_IQD ||
+	    card->info.type == QETH_CARD_TYPE_OSM ||
+	    card->info.type == QETH_CARD_TYPE_OSX ||
+	    card->info.guestlan) {
+		rc = qeth_setadpparms_change_macaddr(card);
+		if (rc) {
+			QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
+				"device %s: x%x\n", CARD_BUS_ID(card), rc);
+			QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+			return rc;
+		}
+		QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
+	} else {
+		random_ether_addr(card->dev->dev_addr);
+		memcpy(card->dev->dev_addr, vendor_pre, 3);
+	}
+	return 0;
+}
+
+static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+	struct qeth_card *card = dev->ml_priv;
+	int rc = 0;
+
+	QETH_CARD_TEXT(card, 3, "setmac");
+
+	if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
+		QETH_CARD_TEXT(card, 3, "setmcINV");
+		return -EOPNOTSUPP;
+	}
+
+	if (card->info.type == QETH_CARD_TYPE_OSN ||
+	    card->info.type == QETH_CARD_TYPE_OSM ||
+	    card->info.type == QETH_CARD_TYPE_OSX) {
+		QETH_CARD_TEXT(card, 3, "setmcTYP");
+		return -EOPNOTSUPP;
+	}
+	QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
+	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
+		QETH_CARD_TEXT(card, 3, "setmcREC");
+		return -ERESTARTSYS;
+	}
+	rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
+	if (!rc)
+		rc = qeth_l2_send_setmac(card, addr->sa_data);
+	return rc ? -EINVAL : 0;
+}
+
+static void qeth_l2_set_multicast_list(struct net_device *dev)
+{
+	struct qeth_card *card = dev->ml_priv;
+	struct netdev_hw_addr *ha;
+
+	if (card->info.type == QETH_CARD_TYPE_OSN)
+		return ;
+
+	QETH_CARD_TEXT(card, 3, "setmulti");
+	if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
+	    (card->state != CARD_STATE_UP))
+		return;
+	qeth_l2_del_all_mc(card, 1);
+	spin_lock_bh(&card->mclock);
+	netdev_for_each_mc_addr(ha, dev)
+		qeth_l2_add_mc(card, ha->addr, 0);
+
+	netdev_for_each_uc_addr(ha, dev)
+		qeth_l2_add_mc(card, ha->addr, 1);
+
+	spin_unlock_bh(&card->mclock);
+	if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
+		return;
+	qeth_setadp_promisc_mode(card);
+}
+
+static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	int rc;
+	struct qeth_hdr *hdr = NULL;
+	int elements = 0;
+	struct qeth_card *card = dev->ml_priv;
+	struct sk_buff *new_skb = skb;
+	int ipv = qeth_get_ip_version(skb);
+	int cast_type = qeth_l2_get_cast_type(card, skb);
+	struct qeth_qdio_out_q *queue = card->qdio.out_qs
+		[qeth_get_priority_queue(card, skb, ipv, cast_type)];
+	int tx_bytes = skb->len;
+	int data_offset = -1;
+	int elements_needed = 0;
+	int hd_len = 0;
+
+	if ((card->state != CARD_STATE_UP) || !card->lan_online) {
+		card->stats.tx_carrier_errors++;
+		goto tx_drop;
+	}
+
+	if ((card->info.type == QETH_CARD_TYPE_OSN) &&
+	    (skb->protocol == htons(ETH_P_IPV6)))
+		goto tx_drop;
+
+	if (card->options.performance_stats) {
+		card->perf_stats.outbound_cnt++;
+		card->perf_stats.outbound_start_time = qeth_get_micros();
+	}
+	netif_stop_queue(dev);
+
+	if (card->info.type == QETH_CARD_TYPE_OSN)
+		hdr = (struct qeth_hdr *)skb->data;
+	else {
+		if (card->info.type == QETH_CARD_TYPE_IQD) {
+			new_skb = skb;
+			data_offset = ETH_HLEN;
+			hd_len = ETH_HLEN;
+			hdr = kmem_cache_alloc(qeth_core_header_cache,
+						GFP_ATOMIC);
+			if (!hdr)
+				goto tx_drop;
+			elements_needed++;
+			skb_reset_mac_header(new_skb);
+			qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
+			hdr->hdr.l2.pkt_length = new_skb->len;
+			memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
+				skb_mac_header(new_skb), ETH_HLEN);
+		} else {
+			/* create a clone with writeable headroom */
+			new_skb = skb_realloc_headroom(skb,
+						sizeof(struct qeth_hdr));
+			if (!new_skb)
+				goto tx_drop;
+			hdr = (struct qeth_hdr *)skb_push(new_skb,
+						sizeof(struct qeth_hdr));
+			skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
+			qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
+		}
+	}
+
+	elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
+						elements_needed);
+	if (!elements) {
+		if (data_offset >= 0)
+			kmem_cache_free(qeth_core_header_cache, hdr);
+		goto tx_drop;
+	}
+
+	if (card->info.type != QETH_CARD_TYPE_IQD) {
+		if (qeth_hdr_chk_and_bounce(new_skb,
+		    sizeof(struct qeth_hdr_layer2)))
+			goto tx_drop;
+		rc = qeth_do_send_packet(card, queue, new_skb, hdr,
+					 elements);
+	} else
+		rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
+					elements, data_offset, hd_len);
+	if (!rc) {
+		card->stats.tx_packets++;
+		card->stats.tx_bytes += tx_bytes;
+		if (new_skb != skb)
+			dev_kfree_skb_any(skb);
+		rc = NETDEV_TX_OK;
+	} else {
+		if (data_offset >= 0)
+			kmem_cache_free(qeth_core_header_cache, hdr);
+
+		if (rc == -EBUSY) {
+			if (new_skb != skb)
+				dev_kfree_skb_any(new_skb);
+			return NETDEV_TX_BUSY;
+		} else
+			goto tx_drop;
+	}
+
+	netif_wake_queue(dev);
+	if (card->options.performance_stats)
+		card->perf_stats.outbound_time += qeth_get_micros() -
+			card->perf_stats.outbound_start_time;
+	return rc;
+
+tx_drop:
+	card->stats.tx_dropped++;
+	card->stats.tx_errors++;
+	if ((new_skb != skb) && new_skb)
+		dev_kfree_skb_any(new_skb);
+	dev_kfree_skb_any(skb);
+	netif_wake_queue(dev);
+	return NETDEV_TX_OK;
+}
+
+static int __qeth_l2_open(struct net_device *dev)
+{
+	struct qeth_card *card = dev->ml_priv;
+	int rc = 0;
+
+	QETH_CARD_TEXT(card, 4, "qethopen");
+	if (card->state == CARD_STATE_UP)
+		return rc;
+	if (card->state != CARD_STATE_SOFTSETUP)
+		return -ENODEV;
+
+	if ((card->info.type != QETH_CARD_TYPE_OSN) &&
+	     (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
+		QETH_CARD_TEXT(card, 4, "nomacadr");
+		return -EPERM;
+	}
+	card->data.state = CH_STATE_UP;
+	card->state = CARD_STATE_UP;
+	netif_start_queue(dev);
+
+	if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
+		napi_enable(&card->napi);
+		napi_schedule(&card->napi);
+	} else
+		rc = -EIO;
+	return rc;
+}
+
+static int qeth_l2_open(struct net_device *dev)
+{
+	struct qeth_card *card = dev->ml_priv;
+
+	QETH_CARD_TEXT(card, 5, "qethope_");
+	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
+		QETH_CARD_TEXT(card, 3, "openREC");
+		return -ERESTARTSYS;
+	}
+	return __qeth_l2_open(dev);
+}
+
+static int qeth_l2_stop(struct net_device *dev)
+{
+	struct qeth_card *card = dev->ml_priv;
+
+	QETH_CARD_TEXT(card, 4, "qethstop");
+	netif_tx_disable(dev);
+	if (card->state == CARD_STATE_UP) {
+		card->state = CARD_STATE_SOFTSETUP;
+		napi_disable(&card->napi);
+	}
+	return 0;
+}
+
+static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+
+	INIT_LIST_HEAD(&card->vid_list);
+	INIT_LIST_HEAD(&card->mc_list);
+	card->options.layer2 = 1;
+	card->info.hwtrap = 0;
+	card->discipline.start_poll = qeth_qdio_start_poll;
+	card->discipline.input_handler = (qdio_handler_t *)
+		qeth_qdio_input_handler;
+	card->discipline.output_handler = (qdio_handler_t *)
+		qeth_qdio_output_handler;
+	card->discipline.recover = qeth_l2_recover;
+	return 0;
+}
+
+static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&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_l2_set_offline(cgdev);
+
+	if (card->dev) {
+		unregister_netdev(card->dev);
+		card->dev = NULL;
+	}
+	return;
+}
+
+static const struct ethtool_ops qeth_l2_ethtool_ops = {
+	.get_link = ethtool_op_get_link,
+	.get_strings = qeth_core_get_strings,
+	.get_ethtool_stats = qeth_core_get_ethtool_stats,
+	.get_sset_count = qeth_core_get_sset_count,
+	.get_drvinfo = qeth_core_get_drvinfo,
+	.get_settings = qeth_core_ethtool_get_settings,
+};
+
+static const struct ethtool_ops qeth_l2_osn_ops = {
+	.get_strings = qeth_core_get_strings,
+	.get_ethtool_stats = qeth_core_get_ethtool_stats,
+	.get_sset_count = qeth_core_get_sset_count,
+	.get_drvinfo = qeth_core_get_drvinfo,
+};
+
+static const struct net_device_ops qeth_l2_netdev_ops = {
+	.ndo_open		= qeth_l2_open,
+	.ndo_stop		= qeth_l2_stop,
+	.ndo_get_stats		= qeth_get_stats,
+	.ndo_start_xmit		= qeth_l2_hard_start_xmit,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_rx_mode	= qeth_l2_set_multicast_list,
+	.ndo_do_ioctl	   	= qeth_l2_do_ioctl,
+	.ndo_set_mac_address    = qeth_l2_set_mac_address,
+	.ndo_change_mtu	   	= qeth_change_mtu,
+	.ndo_vlan_rx_add_vid	= qeth_l2_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
+	.ndo_tx_timeout	   	= qeth_tx_timeout,
+};
+
+static int qeth_l2_setup_netdev(struct qeth_card *card)
+{
+	switch (card->info.type) {
+	case QETH_CARD_TYPE_IQD:
+		card->dev = alloc_netdev(0, "hsi%d", ether_setup);
+		break;
+	case QETH_CARD_TYPE_OSN:
+		card->dev = alloc_netdev(0, "osn%d", ether_setup);
+		card->dev->flags |= IFF_NOARP;
+		break;
+	default:
+		card->dev = alloc_etherdev(0);
+	}
+
+	if (!card->dev)
+		return -ENODEV;
+
+	card->dev->ml_priv = card;
+	card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
+	card->dev->mtu = card->info.initial_mtu;
+	card->dev->netdev_ops = &qeth_l2_netdev_ops;
+	if (card->info.type != QETH_CARD_TYPE_OSN)
+		SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
+	else
+		SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
+	card->dev->features |= NETIF_F_HW_VLAN_FILTER;
+	card->info.broadcast_capable = 1;
+	qeth_l2_request_initial_mac(card);
+	SET_NETDEV_DEV(card->dev, &card->gdev->dev);
+	netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
+	return register_netdev(card->dev);
+}
+
+static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
+{
+	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+	int rc = 0;
+	enum qeth_card_states recover_flag;
+
+	BUG_ON(!card);
+	mutex_lock(&card->discipline_mutex);
+	mutex_lock(&card->conf_mutex);
+	QETH_DBF_TEXT(SETUP, 2, "setonlin");
+	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
+
+	recover_flag = card->state;
+	rc = qeth_core_hardsetup_card(card);
+	if (rc) {
+		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
+		rc = -ENODEV;
+		goto out_remove;
+	}
+
+	if (!card->dev && qeth_l2_setup_netdev(card)) {
+		rc = -ENODEV;
+		goto out_remove;
+	}
+
+	if (card->info.type != QETH_CARD_TYPE_OSN)
+		qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
+
+	if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
+		if (card->info.hwtrap &&
+		    qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
+			card->info.hwtrap = 0;
+	} else
+		card->info.hwtrap = 0;
+
+	card->state = CARD_STATE_HARDSETUP;
+	memset(&card->rx, 0, sizeof(struct qeth_rx));
+	qeth_print_status_message(card);
+
+	/* softsetup */
+	QETH_DBF_TEXT(SETUP, 2, "softsetp");
+
+	rc = qeth_send_startlan(card);
+	if (rc) {
+		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+		if (rc == 0xe080) {
+			dev_warn(&card->gdev->dev,
+				"The LAN is offline\n");
+			card->lan_online = 0;
+			goto contin;
+		}
+		rc = -ENODEV;
+		goto out_remove;
+	} else
+		card->lan_online = 1;
+
+contin:
+	if ((card->info.type == QETH_CARD_TYPE_OSD) ||
+	    (card->info.type == QETH_CARD_TYPE_OSX))
+		/* configure isolation level */
+		qeth_set_access_ctrl_online(card);
+
+	if (card->info.type != QETH_CARD_TYPE_OSN &&
+	    card->info.type != QETH_CARD_TYPE_OSM)
+		qeth_l2_process_vlans(card);
+
+	netif_tx_disable(card->dev);
+
+	rc = qeth_init_qdio_queues(card);
+	if (rc) {
+		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
+		rc = -ENODEV;
+		goto out_remove;
+	}
+	card->state = CARD_STATE_SOFTSETUP;
+	if (card->lan_online)
+		netif_carrier_on(card->dev);
+	else
+		netif_carrier_off(card->dev);
+
+	qeth_set_allowed_threads(card, 0xffffffff, 0);
+	if (recover_flag == CARD_STATE_RECOVER) {
+		if (recovery_mode &&
+		    card->info.type != QETH_CARD_TYPE_OSN) {
+			__qeth_l2_open(card->dev);
+		} else {
+			rtnl_lock();
+			dev_open(card->dev);
+			rtnl_unlock();
+		}
+		/* this also sets saved unicast addresses */
+		qeth_l2_set_multicast_list(card->dev);
+	}
+	/* let user_space know that device is online */
+	kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
+	mutex_unlock(&card->conf_mutex);
+	mutex_unlock(&card->discipline_mutex);
+	return 0;
+
+out_remove:
+	qeth_l2_stop_card(card, 0);
+	ccw_device_set_offline(CARD_DDEV(card));
+	ccw_device_set_offline(CARD_WDEV(card));
+	ccw_device_set_offline(CARD_RDEV(card));
+	if (recover_flag == CARD_STATE_RECOVER)
+		card->state = CARD_STATE_RECOVER;
+	else
+		card->state = CARD_STATE_DOWN;
+	mutex_unlock(&card->conf_mutex);
+	mutex_unlock(&card->discipline_mutex);
+	return rc;
+}
+
+static int qeth_l2_set_online(struct ccwgroup_device *gdev)
+{
+	return __qeth_l2_set_online(gdev, 0);
+}
+
+static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
+					int recovery_mode)
+{
+	struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
+	int rc = 0, rc2 = 0, rc3 = 0;
+	enum qeth_card_states recover_flag;
+
+	mutex_lock(&card->discipline_mutex);
+	mutex_lock(&card->conf_mutex);
+	QETH_DBF_TEXT(SETUP, 3, "setoffl");
+	QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
+
+	if (card->dev && netif_carrier_ok(card->dev))
+		netif_carrier_off(card->dev);
+	recover_flag = card->state;
+	if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
+		qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
+		card->info.hwtrap = 1;
+	}
+	qeth_l2_stop_card(card, recovery_mode);
+	rc  = ccw_device_set_offline(CARD_DDEV(card));
+	rc2 = ccw_device_set_offline(CARD_WDEV(card));
+	rc3 = ccw_device_set_offline(CARD_RDEV(card));
+	if (!rc)
+		rc = (rc2) ? rc2 : rc3;
+	if (rc)
+		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+	if (recover_flag == CARD_STATE_UP)
+		card->state = CARD_STATE_RECOVER;
+	/* let user_space know that device is offline */
+	kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
+	mutex_unlock(&card->conf_mutex);
+	mutex_unlock(&card->discipline_mutex);
+	return 0;
+}
+
+static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
+{
+	return __qeth_l2_set_offline(cgdev, 0);
+}
+
+static int qeth_l2_recover(void *ptr)
+{
+	struct qeth_card *card;
+	int rc = 0;
+
+	card = (struct qeth_card *) ptr;
+	QETH_CARD_TEXT(card, 2, "recover1");
+	if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
+		return 0;
+	QETH_CARD_TEXT(card, 2, "recover2");
+	dev_warn(&card->gdev->dev,
+		"A recovery process has been started for the device\n");
+	__qeth_l2_set_offline(card->gdev, 1);
+	rc = __qeth_l2_set_online(card->gdev, 1);
+	if (!rc)
+		dev_info(&card->gdev->dev,
+			"Device successfully recovered!\n");
+	else {
+		rtnl_lock();
+		dev_close(card->dev);
+		rtnl_unlock();
+		dev_warn(&card->gdev->dev, "The qeth device driver "
+			"failed to recover an error on the device\n");
+	}
+	qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
+	qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
+	return 0;
+}
+
+static int __init qeth_l2_init(void)
+{
+	pr_info("register layer 2 discipline\n");
+	return 0;
+}
+
+static void __exit qeth_l2_exit(void)
+{
+	pr_info("unregister layer 2 discipline\n");
+}
+
+static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+	qeth_set_allowed_threads(card, 0, 1);
+	if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
+		qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
+	qeth_qdio_clear_card(card, 0);
+	qeth_clear_qdio_buffers(card);
+}
+
+static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+
+	if (card->dev)
+		netif_device_detach(card->dev);
+	qeth_set_allowed_threads(card, 0, 1);
+	wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
+	if (gdev->state == CCWGROUP_OFFLINE)
+		return 0;
+	if (card->state == CARD_STATE_UP) {
+		if (card->info.hwtrap)
+			qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
+		__qeth_l2_set_offline(card->gdev, 1);
+	} else
+		__qeth_l2_set_offline(card->gdev, 0);
+	return 0;
+}
+
+static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+	int rc = 0;
+
+	if (gdev->state == CCWGROUP_OFFLINE)
+		goto out;
+
+	if (card->state == CARD_STATE_RECOVER) {
+		rc = __qeth_l2_set_online(card->gdev, 1);
+		if (rc) {
+			rtnl_lock();
+			dev_close(card->dev);
+			rtnl_unlock();
+		}
+	} else
+		rc = __qeth_l2_set_online(card->gdev, 0);
+out:
+	qeth_set_allowed_threads(card, 0xffffffff, 0);
+	if (card->dev)
+		netif_device_attach(card->dev);
+	if (rc)
+		dev_warn(&card->gdev->dev, "The qeth device driver "
+			"failed to recover an error on the device\n");
+	return rc;
+}
+
+struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
+	.probe = qeth_l2_probe_device,
+	.remove = qeth_l2_remove_device,
+	.set_online = qeth_l2_set_online,
+	.set_offline = qeth_l2_set_offline,
+	.shutdown = qeth_l2_shutdown,
+	.freeze = qeth_l2_pm_suspend,
+	.thaw = qeth_l2_pm_resume,
+	.restore = qeth_l2_pm_resume,
+};
+EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
+
+static int qeth_osn_send_control_data(struct qeth_card *card, int len,
+			   struct qeth_cmd_buffer *iob)
+{
+	unsigned long flags;
+	int rc = 0;
+
+	QETH_CARD_TEXT(card, 5, "osndctrd");
+
+	wait_event(card->wait_q,
+		   atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
+	qeth_prepare_control_data(card, len, iob);
+	QETH_CARD_TEXT(card, 6, "osnoirqp");
+	spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
+	rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
+			      (addr_t) iob, 0, 0);
+	spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
+	if (rc) {
+		QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
+			   "ccw_device_start rc = %i\n", rc);
+		QETH_CARD_TEXT_(card, 2, " err%d", rc);
+		qeth_release_buffer(iob->channel, iob);
+		atomic_set(&card->write.irq_pending, 0);
+		wake_up(&card->wait_q);
+	}
+	return rc;
+}
+
+static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
+			struct qeth_cmd_buffer *iob, int data_len)
+{
+	u16 s1, s2;
+
+	QETH_CARD_TEXT(card, 4, "osndipa");
+
+	qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
+	s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
+	s2 = (u16)data_len;
+	memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
+	memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
+	memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
+	memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
+	return qeth_osn_send_control_data(card, s1, iob);
+}
+
+int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
+{
+	struct qeth_cmd_buffer *iob;
+	struct qeth_card *card;
+	int rc;
+
+	if (!dev)
+		return -ENODEV;
+	card = dev->ml_priv;
+	if (!card)
+		return -ENODEV;
+	QETH_CARD_TEXT(card, 2, "osnsdmc");
+	if ((card->state != CARD_STATE_UP) &&
+	    (card->state != CARD_STATE_SOFTSETUP))
+		return -ENODEV;
+	iob = qeth_wait_for_buffer(&card->write);
+	memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
+	rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
+	return rc;
+}
+EXPORT_SYMBOL(qeth_osn_assist);
+
+int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
+		  int (*assist_cb)(struct net_device *, void *),
+		  int (*data_cb)(struct sk_buff *))
+{
+	struct qeth_card *card;
+
+	*dev = qeth_l2_netdev_by_devno(read_dev_no);
+	if (*dev == NULL)
+		return -ENODEV;
+	card = (*dev)->ml_priv;
+	if (!card)
+		return -ENODEV;
+	QETH_CARD_TEXT(card, 2, "osnreg");
+	if ((assist_cb == NULL) || (data_cb == NULL))
+		return -EINVAL;
+	card->osn_info.assist_cb = assist_cb;
+	card->osn_info.data_cb = data_cb;
+	return 0;
+}
+EXPORT_SYMBOL(qeth_osn_register);
+
+void qeth_osn_deregister(struct net_device *dev)
+{
+	struct qeth_card *card;
+
+	if (!dev)
+		return;
+	card = dev->ml_priv;
+	if (!card)
+		return;
+	QETH_CARD_TEXT(card, 2, "osndereg");
+	card->osn_info.assist_cb = NULL;
+	card->osn_info.data_cb = NULL;
+	return;
+}
+EXPORT_SYMBOL(qeth_osn_deregister);
+
+module_init(qeth_l2_init);
+module_exit(qeth_l2_exit);
+MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
+MODULE_DESCRIPTION("qeth layer 2 discipline");
+MODULE_LICENSE("GPL");