qeth_l2_main.c 35.3 KB
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/*
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 *    Copyright IBM Corp. 2007, 2009
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 *    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>
 */

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#define KMSG_COMPONENT "qeth"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

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#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/etherdevice.h>
#include <linux/mii.h>
#include <linux/ip.h>
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#include <linux/list.h>
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#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)
{
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	struct qeth_card *card = dev->ml_priv;
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	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:
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		if ((card->info.type == QETH_CARD_TYPE_OSD ||
		     card->info.type == QETH_CARD_TYPE_OSM ||
		     card->info.type == QETH_CARD_TYPE_OSX) &&
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		    !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;
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	case SIOC_QETH_QUERY_OAT:
		rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
		break;
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	default:
		rc = -EOPNOTSUPP;
	}
	if (rc)
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		QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
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	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;
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	__u16 temp_dev_no;
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	unsigned long flags;
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	struct ccw_dev_id read_devid;
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	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) {
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		ccw_device_get_id(CARD_RDEV(card), &read_devid);
		if (read_devid.devno == temp_dev_no) {
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			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;

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	QETH_CARD_TEXT(card, 2, "L2Sgmacb");
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	cmd = (struct qeth_ipa_cmd *) data;
	mac = &cmd->data.setdelmac.mac[0];
	/* MAC already registered, needed in couple/uncouple case */
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	if (cmd->hdr.return_code ==  IPA_RC_L2_DUP_MAC) {
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		QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
			  mac, QETH_CARD_IFNAME(card));
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		cmd->hdr.return_code = 0;
	}
	if (cmd->hdr.return_code)
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		QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
			  mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
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	return 0;
}

static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
{
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	QETH_CARD_TEXT(card, 2, "L2Sgmac");
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	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;

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	QETH_CARD_TEXT(card, 2, "L2Dgmacb");
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	cmd = (struct qeth_ipa_cmd *) data;
	mac = &cmd->data.setdelmac.mac[0];
	if (cmd->hdr.return_code)
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		QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
			  mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
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	return 0;
}

static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
{
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	QETH_CARD_TEXT(card, 2, "L2Dgmac");
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	return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
					  qeth_l2_send_delgroupmac_cb);
}

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static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
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{
	struct qeth_mc_mac *mc;
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	int rc;
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	mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);

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	if (!mc)
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		return;

	memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
	mc->mc_addrlen = OSA_ADDR_LEN;
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	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);
	}
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	if (!rc)
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		list_add_tail(&mc->list, &card->mc_list);
	else
		kfree(mc);
}

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static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
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{
	struct qeth_mc_mac *mc, *tmp;

	spin_lock_bh(&card->mclock);
	list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
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		if (del) {
			if (mc->is_vmac)
				qeth_l2_send_setdelmac(card, mc->mc_addr,
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					IPA_CMD_DELVMAC, NULL);
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			else
				qeth_l2_send_delgroupmac(card, mc->mc_addr);
		}
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		list_del(&mc->list);
		kfree(mc);
	}
	spin_unlock_bh(&card->mclock);
}

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static inline int qeth_l2_get_cast_type(struct qeth_card *card,
			struct sk_buff *skb)
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{
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	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;
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}

static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
			struct sk_buff *skb, int ipv, int cast_type)
{
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	struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
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	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
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		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
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	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;

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	QETH_CARD_TEXT(card, 2, "L2sdvcb");
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	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code) {
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		QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
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			  "Continuing\n", cmd->data.setdelvlan.vlan_id,
			  QETH_CARD_IFNAME(card), cmd->hdr.return_code);
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		QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
		QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
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	}
	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;

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	QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
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	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);
}

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static void qeth_l2_process_vlans(struct qeth_card *card)
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{
	struct qeth_vlan_vid *id;
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	QETH_CARD_TEXT(card, 3, "L2prcvln");
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	spin_lock_bh(&card->vlanlock);
	list_for_each_entry(id, &card->vid_list, list) {
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		qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
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	}
	spin_unlock_bh(&card->vlanlock);
}

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static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
				   __be16 proto, u16 vid)
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{
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	struct qeth_card *card = dev->ml_priv;
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	struct qeth_vlan_vid *id;

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	QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
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	if (!vid)
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		return 0;
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	if (card->info.type == QETH_CARD_TYPE_OSM) {
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		QETH_CARD_TEXT(card, 3, "aidOSM");
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		return 0;
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	}
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	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
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		QETH_CARD_TEXT(card, 3, "aidREC");
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		return 0;
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	}
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	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);
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	} else {
		return -ENOMEM;
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	}
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	return 0;
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}

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static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
				    __be16 proto, u16 vid)
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{
	struct qeth_vlan_vid *id, *tmpid = NULL;
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	struct qeth_card *card = dev->ml_priv;
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	QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
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	if (card->info.type == QETH_CARD_TYPE_OSM) {
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		QETH_CARD_TEXT(card, 3, "kidOSM");
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		return 0;
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	}
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	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
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		QETH_CARD_TEXT(card, 3, "kidREC");
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		return 0;
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	}
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	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);
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	return 0;
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}

static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
{
	int rc = 0;

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	QETH_DBF_TEXT(SETUP , 2, "stopcard");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
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	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();
		}
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		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
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		card->state = CARD_STATE_SOFTSETUP;
	}
	if (card->state == CARD_STATE_SOFTSETUP) {
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		qeth_l2_del_all_mc(card, 0);
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		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;
}

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static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
				int budget, int *done)
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{
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	int work_done = 0;
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	struct sk_buff *skb;
	struct qeth_hdr *hdr;
	unsigned int len;

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	*done = 0;
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	WARN_ON_ONCE(!budget);
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	while (budget) {
		skb = qeth_core_get_next_skb(card,
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			&card->qdio.in_q->bufs[card->rx.b_index],
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			&card->rx.b_element, &card->rx.e_offset, &hdr);
		if (!skb) {
			*done = 1;
			break;
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		}
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		skb->dev = card->dev;
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		switch (hdr->hdr.l2.id) {
		case QETH_HEADER_TYPE_LAYER2:
			skb->pkt_type = PACKET_HOST;
			skb->protocol = eth_type_trans(skb, skb->dev);
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			skb->ip_summed = CHECKSUM_NONE;
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			if (skb->protocol == htons(ETH_P_802_2))
				*((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
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			len = skb->len;
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			netif_receive_skb(skb);
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			break;
		case QETH_HEADER_TYPE_OSN:
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			if (card->info.type == QETH_CARD_TYPE_OSN) {
				skb_push(skb, sizeof(struct qeth_hdr));
				skb_copy_to_linear_data(skb, hdr,
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						sizeof(struct qeth_hdr));
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				len = skb->len;
				card->osn_info.data_cb(skb);
				break;
			}
			/* else unknown */
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		default:
			dev_kfree_skb_any(skb);
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			QETH_CARD_TEXT(card, 3, "inbunkno");
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			QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
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			continue;
		}
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		work_done++;
		budget--;
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		card->stats.rx_packets++;
		card->stats.rx_bytes += len;
	}
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	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;
F
Frank Blaschka 已提交
533 534 535 536 537 538 539 540 541 542 543
}

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;

C
Carsten Otte 已提交
544
	QETH_CARD_TEXT(card, 2, "L2sdmac");
F
Frank Blaschka 已提交
545 546 547 548 549 550 551 552 553 554 555 556 557
	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;

C
Carsten Otte 已提交
558
	QETH_CARD_TEXT(card, 2, "L2Smaccb");
F
Frank Blaschka 已提交
559 560
	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code) {
C
Carsten Otte 已提交
561
		QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
F
Frank Blaschka 已提交
562
		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
563 564 565 566
		switch (cmd->hdr.return_code) {
		case IPA_RC_L2_DUP_MAC:
		case IPA_RC_L2_DUP_LAYER3_MAC:
			dev_warn(&card->gdev->dev,
567
				"MAC address %pM already exists\n",
568
				cmd->data.setdelmac.mac);
569 570 571 572
			break;
		case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
		case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
			dev_warn(&card->gdev->dev,
573
				"MAC address %pM is not authorized\n",
574
				cmd->data.setdelmac.mac);
575 576 577 578
			break;
		default:
			break;
		}
F
Frank Blaschka 已提交
579 580 581 582
	} else {
		card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
		memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
		       OSA_ADDR_LEN);
583
		dev_info(&card->gdev->dev,
584 585
			"MAC address %pM successfully registered on device %s\n",
			card->dev->dev_addr, card->dev->name);
F
Frank Blaschka 已提交
586 587 588 589 590 591
	}
	return 0;
}

static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
{
C
Carsten Otte 已提交
592
	QETH_CARD_TEXT(card, 2, "L2Setmac");
F
Frank Blaschka 已提交
593 594 595 596 597 598 599 600 601 602
	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;

C
Carsten Otte 已提交
603
	QETH_CARD_TEXT(card, 2, "L2Dmaccb");
F
Frank Blaschka 已提交
604 605
	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code) {
C
Carsten Otte 已提交
606
		QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
F
Frank Blaschka 已提交
607 608 609 610 611 612 613 614 615
		return 0;
	}
	card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;

	return 0;
}

static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
{
C
Carsten Otte 已提交
616
	QETH_CARD_TEXT(card, 2, "L2Delmac");
F
Frank Blaschka 已提交
617 618 619 620 621 622 623 624 625 626 627
	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};

628 629
	QETH_DBF_TEXT(SETUP, 2, "doL2init");
	QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
F
Frank Blaschka 已提交
630

631 632 633 634 635 636 637
	if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
		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);
		}
F
Frank Blaschka 已提交
638 639
	}

640 641 642 643
	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) {
F
Frank Blaschka 已提交
644 645
		rc = qeth_setadpparms_change_macaddr(card);
		if (rc) {
646 647
			QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
				"device %s: x%x\n", CARD_BUS_ID(card), rc);
648
			QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
649 650
			return rc;
		}
651
		QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
F
Frank Blaschka 已提交
652
	} else {
J
Joe Perches 已提交
653
		eth_random_addr(card->dev->dev_addr);
F
Frank Blaschka 已提交
654 655 656 657 658 659 660 661
		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;
662
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
663 664
	int rc = 0;

C
Carsten Otte 已提交
665
	QETH_CARD_TEXT(card, 3, "setmac");
F
Frank Blaschka 已提交
666 667

	if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
C
Carsten Otte 已提交
668
		QETH_CARD_TEXT(card, 3, "setmcINV");
F
Frank Blaschka 已提交
669 670 671
		return -EOPNOTSUPP;
	}

672 673 674
	if (card->info.type == QETH_CARD_TYPE_OSN ||
	    card->info.type == QETH_CARD_TYPE_OSM ||
	    card->info.type == QETH_CARD_TYPE_OSX) {
C
Carsten Otte 已提交
675
		QETH_CARD_TEXT(card, 3, "setmcTYP");
F
Frank Blaschka 已提交
676 677
		return -EOPNOTSUPP;
	}
C
Carsten Otte 已提交
678
	QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
679
	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
C
Carsten Otte 已提交
680
		QETH_CARD_TEXT(card, 3, "setmcREC");
681 682
		return -ERESTARTSYS;
	}
F
Frank Blaschka 已提交
683
	rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
684
	if (!rc || (rc == IPA_RC_L2_MAC_NOT_FOUND))
F
Frank Blaschka 已提交
685
		rc = qeth_l2_send_setmac(card, addr->sa_data);
686
	return rc ? -EINVAL : 0;
F
Frank Blaschka 已提交
687 688 689 690
}

static void qeth_l2_set_multicast_list(struct net_device *dev)
{
691
	struct qeth_card *card = dev->ml_priv;
J
Jiri Pirko 已提交
692
	struct netdev_hw_addr *ha;
F
Frank Blaschka 已提交
693 694 695 696

	if (card->info.type == QETH_CARD_TYPE_OSN)
		return ;

C
Carsten Otte 已提交
697
	QETH_CARD_TEXT(card, 3, "setmulti");
698 699 700
	if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
	    (card->state != CARD_STATE_UP))
		return;
701
	qeth_l2_del_all_mc(card, 1);
F
Frank Blaschka 已提交
702
	spin_lock_bh(&card->mclock);
703 704
	netdev_for_each_mc_addr(ha, dev)
		qeth_l2_add_mc(card, ha->addr, 0);
705

706
	netdev_for_each_uc_addr(ha, dev)
J
Jiri Pirko 已提交
707
		qeth_l2_add_mc(card, ha->addr, 1);
708

F
Frank Blaschka 已提交
709 710 711 712 713 714 715 716 717 718 719
	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;
720
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
721 722
	struct sk_buff *new_skb = skb;
	int ipv = qeth_get_ip_version(skb);
723
	int cast_type = qeth_l2_get_cast_type(card, skb);
F
Frank Blaschka 已提交
724 725 726
	struct qeth_qdio_out_q *queue = card->qdio.out_qs
		[qeth_get_priority_queue(card, skb, ipv, cast_type)];
	int tx_bytes = skb->len;
727 728 729
	int data_offset = -1;
	int elements_needed = 0;
	int hd_len = 0;
F
Frank Blaschka 已提交
730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748

	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 {
F
Frank Blaschka 已提交
749
		if (card->info.type == QETH_CARD_TYPE_IQD) {
750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
			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,
F
Frank Blaschka 已提交
770
						sizeof(struct qeth_hdr));
771 772 773
			skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
			qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
		}
F
Frank Blaschka 已提交
774 775
	}

S
Stefan Raspl 已提交
776
	elements = qeth_get_elements_no(card, new_skb, elements_needed);
F
Frank Blaschka 已提交
777 778 779 780
	if (!elements) {
		if (data_offset >= 0)
			kmem_cache_free(qeth_core_header_cache, hdr);
		goto tx_drop;
781
	}
F
Frank Blaschka 已提交
782

783 784 785 786
	if (card->info.type != QETH_CARD_TYPE_IQD) {
		if (qeth_hdr_chk_and_bounce(new_skb,
		    sizeof(struct qeth_hdr_layer2)))
			goto tx_drop;
F
Frank Blaschka 已提交
787
		rc = qeth_do_send_packet(card, queue, new_skb, hdr,
F
Frank Blaschka 已提交
788
					 elements);
789
	} else
F
Frank Blaschka 已提交
790
		rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
F
Frank Blaschka 已提交
791
					elements, data_offset, hd_len);
F
Frank Blaschka 已提交
792 793 794 795 796
	if (!rc) {
		card->stats.tx_packets++;
		card->stats.tx_bytes += tx_bytes;
		if (new_skb != skb)
			dev_kfree_skb_any(skb);
797
		rc = NETDEV_TX_OK;
F
Frank Blaschka 已提交
798
	} else {
799 800 801
		if (data_offset >= 0)
			kmem_cache_free(qeth_core_header_cache, hdr);

F
Frank Blaschka 已提交
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821
		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);
822
	netif_wake_queue(dev);
F
Frank Blaschka 已提交
823 824 825
	return NETDEV_TX_OK;
}

826
static int __qeth_l2_open(struct net_device *dev)
F
Frank Blaschka 已提交
827
{
828
	struct qeth_card *card = dev->ml_priv;
829
	int rc = 0;
F
Frank Blaschka 已提交
830

C
Carsten Otte 已提交
831
	QETH_CARD_TEXT(card, 4, "qethopen");
832 833
	if (card->state == CARD_STATE_UP)
		return rc;
F
Frank Blaschka 已提交
834 835 836 837 838
	if (card->state != CARD_STATE_SOFTSETUP)
		return -ENODEV;

	if ((card->info.type != QETH_CARD_TYPE_OSN) &&
	     (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
C
Carsten Otte 已提交
839
		QETH_CARD_TEXT(card, 4, "nomacadr");
F
Frank Blaschka 已提交
840 841 842 843 844 845
		return -EPERM;
	}
	card->data.state = CH_STATE_UP;
	card->state = CARD_STATE_UP;
	netif_start_queue(dev);

846 847 848 849 850 851
	if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
		napi_enable(&card->napi);
		napi_schedule(&card->napi);
	} else
		rc = -EIO;
	return rc;
F
Frank Blaschka 已提交
852 853
}

854 855 856 857 858 859 860 861 862 863 864 865
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);
}

F
Frank Blaschka 已提交
866 867
static int qeth_l2_stop(struct net_device *dev)
{
868
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
869

C
Carsten Otte 已提交
870
	QETH_CARD_TEXT(card, 4, "qethstop");
F
Frank Blaschka 已提交
871
	netif_tx_disable(dev);
872
	if (card->state == CARD_STATE_UP) {
F
Frank Blaschka 已提交
873
		card->state = CARD_STATE_SOFTSETUP;
874 875
		napi_disable(&card->napi);
	}
F
Frank Blaschka 已提交
876 877 878 879 880 881 882 883 884 885
	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;
886
	card->info.hwtrap = 0;
F
Frank Blaschka 已提交
887 888 889 890 891 892 893
	return 0;
}

static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
{
	struct qeth_card *card = dev_get_drvdata(&cgdev->dev);

894
	qeth_set_allowed_threads(card, 0, 1);
F
Frank Blaschka 已提交
895 896
	wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);

897
	if (cgdev->state == CCWGROUP_ONLINE)
F
Frank Blaschka 已提交
898 899 900 901 902 903 904 905 906
		qeth_l2_set_offline(cgdev);

	if (card->dev) {
		unregister_netdev(card->dev);
		card->dev = NULL;
	}
	return;
}

907
static const struct ethtool_ops qeth_l2_ethtool_ops = {
F
Frank Blaschka 已提交
908 909 910
	.get_link = ethtool_op_get_link,
	.get_strings = qeth_core_get_strings,
	.get_ethtool_stats = qeth_core_get_ethtool_stats,
911
	.get_sset_count = qeth_core_get_sset_count,
F
Frank Blaschka 已提交
912
	.get_drvinfo = qeth_core_get_drvinfo,
913
	.get_settings = qeth_core_ethtool_get_settings,
F
Frank Blaschka 已提交
914 915
};

916
static const struct ethtool_ops qeth_l2_osn_ops = {
F
Frank Blaschka 已提交
917 918
	.get_strings = qeth_core_get_strings,
	.get_ethtool_stats = qeth_core_get_ethtool_stats,
919
	.get_sset_count = qeth_core_get_sset_count,
F
Frank Blaschka 已提交
920 921 922
	.get_drvinfo = qeth_core_get_drvinfo,
};

F
Frank Blaschka 已提交
923
static const struct net_device_ops qeth_l2_netdev_ops = {
F
Frank Blaschka 已提交
924 925 926 927 928
	.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,
929
	.ndo_set_rx_mode	= qeth_l2_set_multicast_list,
F
Frank Blaschka 已提交
930 931 932 933 934 935 936 937
	.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,
};

F
Frank Blaschka 已提交
938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954
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;

955
	card->dev->ml_priv = card;
F
Frank Blaschka 已提交
956 957
	card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
	card->dev->mtu = card->info.initial_mtu;
F
Frank Blaschka 已提交
958
	card->dev->netdev_ops = &qeth_l2_netdev_ops;
F
Frank Blaschka 已提交
959 960 961 962
	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);
963
	card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
F
Frank Blaschka 已提交
964 965 966
	card->info.broadcast_capable = 1;
	qeth_l2_request_initial_mac(card);
	SET_NETDEV_DEV(card->dev, &card->gdev->dev);
967
	netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
F
Frank Blaschka 已提交
968 969 970 971 972 973 974 975 976
	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;

977
	mutex_lock(&card->discipline_mutex);
978
	mutex_lock(&card->conf_mutex);
979 980
	QETH_DBF_TEXT(SETUP, 2, "setonlin");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
981 982 983 984

	recover_flag = card->state;
	rc = qeth_core_hardsetup_card(card);
	if (rc) {
985
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
986
		rc = -ENODEV;
F
Frank Blaschka 已提交
987 988
		goto out_remove;
	}
989
	qeth_trace_features(card);
F
Frank Blaschka 已提交
990

991 992
	if (!card->dev && qeth_l2_setup_netdev(card)) {
		rc = -ENODEV;
F
Frank Blaschka 已提交
993
		goto out_remove;
994
	}
F
Frank Blaschka 已提交
995 996 997 998

	if (card->info.type != QETH_CARD_TYPE_OSN)
		qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);

999 1000 1001 1002 1003 1004 1005
	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;

F
Frank Blaschka 已提交
1006
	card->state = CARD_STATE_HARDSETUP;
1007
	memset(&card->rx, 0, sizeof(struct qeth_rx));
F
Frank Blaschka 已提交
1008 1009 1010
	qeth_print_status_message(card);

	/* softsetup */
1011
	QETH_DBF_TEXT(SETUP, 2, "softsetp");
F
Frank Blaschka 已提交
1012 1013 1014

	rc = qeth_send_startlan(card);
	if (rc) {
1015
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
1016
		if (rc == 0xe080) {
1017 1018
			dev_warn(&card->gdev->dev,
				"The LAN is offline\n");
F
Frank Blaschka 已提交
1019
			card->lan_online = 0;
1020
			goto contin;
F
Frank Blaschka 已提交
1021
		}
1022
		rc = -ENODEV;
1023
		goto out_remove;
F
Frank Blaschka 已提交
1024 1025 1026
	} else
		card->lan_online = 1;

1027
contin:
1028
	if ((card->info.type == QETH_CARD_TYPE_OSD) ||
S
Stefan Raspl 已提交
1029
	    (card->info.type == QETH_CARD_TYPE_OSX)) {
E
Einar Lueck 已提交
1030
		/* configure isolation level */
S
Stefan Raspl 已提交
1031 1032 1033 1034 1035 1036
		rc = qeth_set_access_ctrl_online(card, 0);
		if (rc) {
			rc = -ENODEV;
			goto out_remove;
		}
	}
1037 1038 1039

	if (card->info.type != QETH_CARD_TYPE_OSN &&
	    card->info.type != QETH_CARD_TYPE_OSM)
1040
		qeth_l2_process_vlans(card);
F
Frank Blaschka 已提交
1041 1042 1043 1044 1045

	netif_tx_disable(card->dev);

	rc = qeth_init_qdio_queues(card);
	if (rc) {
1046
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1047
		rc = -ENODEV;
F
Frank Blaschka 已提交
1048 1049 1050
		goto out_remove;
	}
	card->state = CARD_STATE_SOFTSETUP;
1051 1052 1053 1054
	if (card->lan_online)
		netif_carrier_on(card->dev);
	else
		netif_carrier_off(card->dev);
F
Frank Blaschka 已提交
1055 1056 1057 1058 1059

	qeth_set_allowed_threads(card, 0xffffffff, 0);
	if (recover_flag == CARD_STATE_RECOVER) {
		if (recovery_mode &&
		    card->info.type != QETH_CARD_TYPE_OSN) {
1060
			__qeth_l2_open(card->dev);
F
Frank Blaschka 已提交
1061 1062 1063 1064 1065 1066 1067 1068 1069 1070
		} 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);
1071
	mutex_unlock(&card->conf_mutex);
1072
	mutex_unlock(&card->discipline_mutex);
F
Frank Blaschka 已提交
1073
	return 0;
1074

F
Frank Blaschka 已提交
1075 1076 1077 1078 1079 1080 1081 1082 1083
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;
1084
	mutex_unlock(&card->conf_mutex);
1085
	mutex_unlock(&card->discipline_mutex);
1086
	return rc;
F
Frank Blaschka 已提交
1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100
}

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;

1101
	mutex_lock(&card->discipline_mutex);
1102
	mutex_lock(&card->conf_mutex);
1103 1104
	QETH_DBF_TEXT(SETUP, 3, "setoffl");
	QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
F
Frank Blaschka 已提交
1105 1106 1107 1108

	if (card->dev && netif_carrier_ok(card->dev))
		netif_carrier_off(card->dev);
	recover_flag = card->state;
1109 1110 1111 1112
	if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
		qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
		card->info.hwtrap = 1;
	}
1113
	qeth_l2_stop_card(card, recovery_mode);
F
Frank Blaschka 已提交
1114 1115 1116 1117 1118 1119
	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)
1120
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
1121 1122 1123 1124
	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);
1125
	mutex_unlock(&card->conf_mutex);
1126
	mutex_unlock(&card->discipline_mutex);
F
Frank Blaschka 已提交
1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
	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;
C
Carsten Otte 已提交
1141
	QETH_CARD_TEXT(card, 2, "recover1");
F
Frank Blaschka 已提交
1142 1143
	if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
		return 0;
C
Carsten Otte 已提交
1144
	QETH_CARD_TEXT(card, 2, "recover2");
1145 1146
	dev_warn(&card->gdev->dev,
		"A recovery process has been started for the device\n");
F
Frank Blaschka 已提交
1147 1148 1149
	__qeth_l2_set_offline(card->gdev, 1);
	rc = __qeth_l2_set_online(card->gdev, 1);
	if (!rc)
1150 1151
		dev_info(&card->gdev->dev,
			"Device successfully recovered!\n");
1152
	else {
S
Stefan Raspl 已提交
1153 1154
		qeth_close_dev(card);
		dev_warn(&card->gdev->dev, "The qeth device driver "
1155
				"failed to recover an error on the device\n");
1156
	}
1157 1158
	qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
	qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
F
Frank Blaschka 已提交
1159 1160 1161 1162 1163
	return 0;
}

static int __init qeth_l2_init(void)
{
1164
	pr_info("register layer 2 discipline\n");
F
Frank Blaschka 已提交
1165 1166 1167 1168 1169
	return 0;
}

static void __exit qeth_l2_exit(void)
{
1170
	pr_info("unregister layer 2 discipline\n");
F
Frank Blaschka 已提交
1171 1172 1173 1174 1175
}

static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1176
	qeth_set_allowed_threads(card, 0, 1);
1177 1178
	if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
		qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
F
Frank Blaschka 已提交
1179 1180 1181 1182
	qeth_qdio_clear_card(card, 0);
	qeth_clear_qdio_buffers(card);
}

1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
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) {
1194 1195
		if (card->info.hwtrap)
			qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
		__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) {
1213 1214 1215
			rtnl_lock();
			dev_close(card->dev);
			rtnl_unlock();
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228
		}
	} 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;
}

1229 1230 1231 1232 1233 1234
struct qeth_discipline qeth_l2_discipline = {
	.start_poll = qeth_qdio_start_poll,
	.input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
	.output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
	.recover = qeth_l2_recover,
	.setup = qeth_l2_probe_device,
F
Frank Blaschka 已提交
1235 1236 1237 1238
	.remove = qeth_l2_remove_device,
	.set_online = qeth_l2_set_online,
	.set_offline = qeth_l2_set_offline,
	.shutdown = qeth_l2_shutdown,
1239 1240 1241
	.freeze = qeth_l2_pm_suspend,
	.thaw = qeth_l2_pm_resume,
	.restore = qeth_l2_pm_resume,
F
Frank Blaschka 已提交
1242
};
1243
EXPORT_SYMBOL_GPL(qeth_l2_discipline);
F
Frank Blaschka 已提交
1244 1245 1246 1247 1248 1249 1250

static int qeth_osn_send_control_data(struct qeth_card *card, int len,
			   struct qeth_cmd_buffer *iob)
{
	unsigned long flags;
	int rc = 0;

C
Carsten Otte 已提交
1251
	QETH_CARD_TEXT(card, 5, "osndctrd");
F
Frank Blaschka 已提交
1252 1253 1254 1255

	wait_event(card->wait_q,
		   atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
	qeth_prepare_control_data(card, len, iob);
C
Carsten Otte 已提交
1256
	QETH_CARD_TEXT(card, 6, "osnoirqp");
F
Frank Blaschka 已提交
1257 1258 1259 1260 1261
	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) {
1262
		QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
F
Frank Blaschka 已提交
1263
			   "ccw_device_start rc = %i\n", rc);
C
Carsten Otte 已提交
1264
		QETH_CARD_TEXT_(card, 2, " err%d", rc);
F
Frank Blaschka 已提交
1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276
		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;

C
Carsten Otte 已提交
1277
	QETH_CARD_TEXT(card, 4, "osndipa");
F
Frank Blaschka 已提交
1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296

	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;
1297
	card = dev->ml_priv;
F
Frank Blaschka 已提交
1298 1299
	if (!card)
		return -ENODEV;
C
Carsten Otte 已提交
1300
	QETH_CARD_TEXT(card, 2, "osnsdmc");
F
Frank Blaschka 已提交
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319
	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;
1320
	card = (*dev)->ml_priv;
F
Frank Blaschka 已提交
1321 1322
	if (!card)
		return -ENODEV;
C
Carsten Otte 已提交
1323
	QETH_CARD_TEXT(card, 2, "osnreg");
F
Frank Blaschka 已提交
1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
	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;
1338
	card = dev->ml_priv;
F
Frank Blaschka 已提交
1339 1340
	if (!card)
		return;
C
Carsten Otte 已提交
1341
	QETH_CARD_TEXT(card, 2, "osndereg");
F
Frank Blaschka 已提交
1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352
	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");