qeth: new qeth device driver

List of major changes and improvements:
 no manipulation of the global ARP constructor
 clean code split into core, layer 2 and layer 3 functionality
 better exploitation of the ethtool interface
 better representation of the various hardware capabilities
 fix packet socket support (tcpdump), no fake_ll required
 osasnmpd notification via udev events
 coding style and beautification

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 916 insertions, 0 deletions

diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
new file mode 100644
index 00000000000..9485e363ca1
--- /dev/null
+++ b/drivers/s390/net/qeth_core.h
@@ -0,0 +1,916 @@
+/*
+ *  drivers/s390/net/qeth_core.h
+ *
+ *    Copyright IBM Corp. 2007
+ *    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>
+ */
+
+#ifndef __QETH_CORE_H__
+#define __QETH_CORE_H__
+
+#include <linux/if.h>
+#include <linux/if_arp.h>
+#include <linux/if_tr.h>
+#include <linux/trdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/ctype.h>
+#include <linux/in6.h>
+#include <linux/bitops.h>
+#include <linux/seq_file.h>
+#include <linux/ethtool.h>
+
+#include <net/ipv6.h>
+#include <net/if_inet6.h>
+#include <net/addrconf.h>
+
+#include <asm/debug.h>
+#include <asm/qdio.h>
+#include <asm/ccwdev.h>
+#include <asm/ccwgroup.h>
+
+#include "qeth_core_mpc.h"
+
+/**
+ * Debug Facility stuff
+ */
+#define QETH_DBF_SETUP_NAME "qeth_setup"
+#define QETH_DBF_SETUP_LEN 8
+#define QETH_DBF_SETUP_PAGES 8
+#define QETH_DBF_SETUP_NR_AREAS 1
+#define QETH_DBF_SETUP_LEVEL 5
+
+#define QETH_DBF_MISC_NAME "qeth_misc"
+#define QETH_DBF_MISC_LEN 128
+#define QETH_DBF_MISC_PAGES 2
+#define QETH_DBF_MISC_NR_AREAS 1
+#define QETH_DBF_MISC_LEVEL 2
+
+#define QETH_DBF_DATA_NAME "qeth_data"
+#define QETH_DBF_DATA_LEN 96
+#define QETH_DBF_DATA_PAGES 8
+#define QETH_DBF_DATA_NR_AREAS 1
+#define QETH_DBF_DATA_LEVEL 2
+
+#define QETH_DBF_CONTROL_NAME "qeth_control"
+#define QETH_DBF_CONTROL_LEN 256
+#define QETH_DBF_CONTROL_PAGES 8
+#define QETH_DBF_CONTROL_NR_AREAS 1
+#define QETH_DBF_CONTROL_LEVEL 5
+
+#define QETH_DBF_TRACE_NAME "qeth_trace"
+#define QETH_DBF_TRACE_LEN 8
+#define QETH_DBF_TRACE_PAGES 4
+#define QETH_DBF_TRACE_NR_AREAS 1
+#define QETH_DBF_TRACE_LEVEL 3
+
+#define QETH_DBF_SENSE_NAME "qeth_sense"
+#define QETH_DBF_SENSE_LEN 64
+#define QETH_DBF_SENSE_PAGES 2
+#define QETH_DBF_SENSE_NR_AREAS 1
+#define QETH_DBF_SENSE_LEVEL 2
+
+#define QETH_DBF_QERR_NAME "qeth_qerr"
+#define QETH_DBF_QERR_LEN 8
+#define QETH_DBF_QERR_PAGES 2
+#define QETH_DBF_QERR_NR_AREAS 1
+#define QETH_DBF_QERR_LEVEL 2
+
+#define QETH_DBF_TEXT(name, level, text) \
+	do { \
+		debug_text_event(qeth_dbf_##name, level, text); \
+	} while (0)
+
+#define QETH_DBF_HEX(name, level, addr, len) \
+	do { \
+		debug_event(qeth_dbf_##name, level, (void *)(addr), len); \
+	} while (0)
+
+/* Allow to sort out low debug levels early to avoid wasted sprints */
+static inline int qeth_dbf_passes(debug_info_t *dbf_grp, int level)
+{
+	return (level <= dbf_grp->level);
+}
+
+/**
+ * some more debug stuff
+ */
+#define PRINTK_HEADER	"qeth: "
+
+#define SENSE_COMMAND_REJECT_BYTE 0
+#define SENSE_COMMAND_REJECT_FLAG 0x80
+#define SENSE_RESETTING_EVENT_BYTE 1
+#define SENSE_RESETTING_EVENT_FLAG 0x80
+
+/*
+ * Common IO related definitions
+ */
+#define CARD_RDEV(card) card->read.ccwdev
+#define CARD_WDEV(card) card->write.ccwdev
+#define CARD_DDEV(card) card->data.ccwdev
+#define CARD_BUS_ID(card) card->gdev->dev.bus_id
+#define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
+#define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
+#define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
+#define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id
+
+/**
+ * card stuff
+ */
+struct qeth_perf_stats {
+	unsigned int bufs_rec;
+	unsigned int bufs_sent;
+
+	unsigned int skbs_sent_pack;
+	unsigned int bufs_sent_pack;
+
+	unsigned int sc_dp_p;
+	unsigned int sc_p_dp;
+	/* qdio_input_handler: number of times called, time spent in */
+	__u64 inbound_start_time;
+	unsigned int inbound_cnt;
+	unsigned int inbound_time;
+	/* qeth_send_packet: number of times called, time spent in */
+	__u64 outbound_start_time;
+	unsigned int outbound_cnt;
+	unsigned int outbound_time;
+	/* qdio_output_handler: number of times called, time spent in */
+	__u64 outbound_handler_start_time;
+	unsigned int outbound_handler_cnt;
+	unsigned int outbound_handler_time;
+	/* number of calls to and time spent in do_QDIO for inbound queue */
+	__u64 inbound_do_qdio_start_time;
+	unsigned int inbound_do_qdio_cnt;
+	unsigned int inbound_do_qdio_time;
+	/* number of calls to and time spent in do_QDIO for outbound queues */
+	__u64 outbound_do_qdio_start_time;
+	unsigned int outbound_do_qdio_cnt;
+	unsigned int outbound_do_qdio_time;
+	/* eddp data */
+	unsigned int large_send_bytes;
+	unsigned int large_send_cnt;
+	unsigned int sg_skbs_sent;
+	unsigned int sg_frags_sent;
+	/* initial values when measuring starts */
+	unsigned long initial_rx_packets;
+	unsigned long initial_tx_packets;
+	/* inbound scatter gather data */
+	unsigned int sg_skbs_rx;
+	unsigned int sg_frags_rx;
+	unsigned int sg_alloc_page_rx;
+};
+
+/* Routing stuff */
+struct qeth_routing_info {
+	enum qeth_routing_types type;
+};
+
+/* IPA stuff */
+struct qeth_ipa_info {
+	__u32 supported_funcs;
+	__u32 enabled_funcs;
+};
+
+static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
+		enum qeth_ipa_funcs func)
+{
+	return (ipa->supported_funcs & func);
+}
+
+static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
+		enum qeth_ipa_funcs func)
+{
+	return (ipa->supported_funcs & ipa->enabled_funcs & func);
+}
+
+#define qeth_adp_supported(c, f) \
+	qeth_is_ipa_supported(&c->options.adp, f)
+#define qeth_adp_enabled(c, f) \
+	qeth_is_ipa_enabled(&c->options.adp, f)
+#define qeth_is_supported(c, f) \
+	qeth_is_ipa_supported(&c->options.ipa4, f)
+#define qeth_is_enabled(c, f) \
+	qeth_is_ipa_enabled(&c->options.ipa4, f)
+#define qeth_is_supported6(c, f) \
+	qeth_is_ipa_supported(&c->options.ipa6, f)
+#define qeth_is_enabled6(c, f) \
+	qeth_is_ipa_enabled(&c->options.ipa6, f)
+#define qeth_is_ipafunc_supported(c, prot, f) \
+	 ((prot == QETH_PROT_IPV6) ? \
+		qeth_is_supported6(c, f) : qeth_is_supported(c, f))
+#define qeth_is_ipafunc_enabled(c, prot, f) \
+	 ((prot == QETH_PROT_IPV6) ? \
+		qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
+
+#define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
+#define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
+#define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
+#define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108
+
+#define QETH_MODELLIST_ARRAY \
+	{{0x1731, 0x01, 0x1732, 0x01, QETH_CARD_TYPE_OSAE, 1, \
+	QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
+	QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
+	QETH_MAX_QUEUES, 0}, \
+	{0x1731, 0x05, 0x1732, 0x05, QETH_CARD_TYPE_IQD, 0, \
+	QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
+	QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
+	QETH_MAX_QUEUES, 0x103}, \
+	{0x1731, 0x06, 0x1732, 0x06, QETH_CARD_TYPE_OSN, 0, \
+	QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
+	QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
+	QETH_MAX_QUEUES, 0}, \
+	{0, 0, 0, 0, 0, 0, 0, 0, 0} }
+
+#define QETH_REAL_CARD		1
+#define QETH_VLAN_CARD		2
+#define QETH_BUFSIZE		4096
+
+/**
+ * some more defs
+ */
+#define QETH_TX_TIMEOUT		100 * HZ
+#define QETH_RCD_TIMEOUT	60 * HZ
+#define QETH_HEADER_SIZE	32
+#define QETH_MAX_PORTNO		15
+
+/*IPv6 address autoconfiguration stuff*/
+#define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
+#define UNIQUE_ID_NOT_BY_CARD		0x10000
+
+/*****************************************************************************/
+/* QDIO queue and buffer handling                                            */
+/*****************************************************************************/
+#define QETH_MAX_QUEUES 4
+#define QETH_IN_BUF_SIZE_DEFAULT 65536
+#define QETH_IN_BUF_COUNT_DEFAULT 16
+#define QETH_IN_BUF_COUNT_MIN 8
+#define QETH_IN_BUF_COUNT_MAX 128
+#define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
+#define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
+		((card)->qdio.in_buf_pool.buf_count / 2)
+
+/* buffers we have to be behind before we get a PCI */
+#define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
+/*enqueued free buffers left before we get a PCI*/
+#define QETH_PCI_THRESHOLD_B(card) 0
+/*not used unless the microcode gets patched*/
+#define QETH_PCI_TIMER_VALUE(card) 3
+
+#define QETH_MIN_INPUT_THRESHOLD 1
+#define QETH_MAX_INPUT_THRESHOLD 500
+#define QETH_MIN_OUTPUT_THRESHOLD 1
+#define QETH_MAX_OUTPUT_THRESHOLD 300
+
+/* priority queing */
+#define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
+#define QETH_DEFAULT_QUEUE    2
+#define QETH_NO_PRIO_QUEUEING 0
+#define QETH_PRIO_Q_ING_PREC  1
+#define QETH_PRIO_Q_ING_TOS   2
+#define IP_TOS_LOWDELAY 0x10
+#define IP_TOS_HIGHTHROUGHPUT 0x08
+#define IP_TOS_HIGHRELIABILITY 0x04
+#define IP_TOS_NOTIMPORTANT 0x02
+
+/* Packing */
+#define QETH_LOW_WATERMARK_PACK  2
+#define QETH_HIGH_WATERMARK_PACK 5
+#define QETH_WATERMARK_PACK_FUZZ 1
+
+#define QETH_IP_HEADER_SIZE 40
+
+/* large receive scatter gather copy break */
+#define QETH_RX_SG_CB (PAGE_SIZE >> 1)
+
+struct qeth_hdr_layer3 {
+	__u8  id;
+	__u8  flags;
+	__u16 inbound_checksum; /*TSO:__u16 seqno */
+	__u32 token;		/*TSO: __u32 reserved */
+	__u16 length;
+	__u8  vlan_prio;
+	__u8  ext_flags;
+	__u16 vlan_id;
+	__u16 frame_offset;
+	__u8  dest_addr[16];
+} __attribute__ ((packed));
+
+struct qeth_hdr_layer2 {
+	__u8 id;
+	__u8 flags[3];
+	__u8 port_no;
+	__u8 hdr_length;
+	__u16 pkt_length;
+	__u16 seq_no;
+	__u16 vlan_id;
+	__u32 reserved;
+	__u8 reserved2[16];
+} __attribute__ ((packed));
+
+struct qeth_hdr_osn {
+	__u8 id;
+	__u8 reserved;
+	__u16 seq_no;
+	__u16 reserved2;
+	__u16 control_flags;
+	__u16 pdu_length;
+	__u8 reserved3[18];
+	__u32 ccid;
+} __attribute__ ((packed));
+
+struct qeth_hdr {
+	union {
+		struct qeth_hdr_layer2 l2;
+		struct qeth_hdr_layer3 l3;
+		struct qeth_hdr_osn    osn;
+	} hdr;
+} __attribute__ ((packed));
+
+/*TCP Segmentation Offload header*/
+struct qeth_hdr_ext_tso {
+	__u16 hdr_tot_len;
+	__u8  imb_hdr_no;
+	__u8  reserved;
+	__u8  hdr_type;
+	__u8  hdr_version;
+	__u16 hdr_len;
+	__u32 payload_len;
+	__u16 mss;
+	__u16 dg_hdr_len;
+	__u8  padding[16];
+} __attribute__ ((packed));
+
+struct qeth_hdr_tso {
+	struct qeth_hdr hdr;	/*hdr->hdr.l3.xxx*/
+	struct qeth_hdr_ext_tso ext;
+} __attribute__ ((packed));
+
+
+/* flags for qeth_hdr.flags */
+#define QETH_HDR_PASSTHRU 0x10
+#define QETH_HDR_IPV6     0x80
+#define QETH_HDR_CAST_MASK 0x07
+enum qeth_cast_flags {
+	QETH_CAST_UNICAST   = 0x06,
+	QETH_CAST_MULTICAST = 0x04,
+	QETH_CAST_BROADCAST = 0x05,
+	QETH_CAST_ANYCAST   = 0x07,
+	QETH_CAST_NOCAST    = 0x00,
+};
+
+enum qeth_layer2_frame_flags {
+	QETH_LAYER2_FLAG_MULTICAST = 0x01,
+	QETH_LAYER2_FLAG_BROADCAST = 0x02,
+	QETH_LAYER2_FLAG_UNICAST   = 0x04,
+	QETH_LAYER2_FLAG_VLAN      = 0x10,
+};
+
+enum qeth_header_ids {
+	QETH_HEADER_TYPE_LAYER3 = 0x01,
+	QETH_HEADER_TYPE_LAYER2 = 0x02,
+	QETH_HEADER_TYPE_TSO	= 0x03,
+	QETH_HEADER_TYPE_OSN    = 0x04,
+};
+/* flags for qeth_hdr.ext_flags */
+#define QETH_HDR_EXT_VLAN_FRAME       0x01
+#define QETH_HDR_EXT_TOKEN_ID         0x02
+#define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
+#define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
+#define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
+#define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
+#define QETH_HDR_EXT_UDP_TSO          0x40 /*bit off for TCP*/
+
+static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
+{
+	return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
+}
+
+enum qeth_qdio_buffer_states {
+	/*
+	 * inbound: read out by driver; owned by hardware in order to be filled
+	 * outbound: owned by driver in order to be filled
+	 */
+	QETH_QDIO_BUF_EMPTY,
+	/*
+	 * inbound: filled by hardware; owned by driver in order to be read out
+	 * outbound: filled by driver; owned by hardware in order to be sent
+	 */
+	QETH_QDIO_BUF_PRIMED,
+};
+
+enum qeth_qdio_info_states {
+	QETH_QDIO_UNINITIALIZED,
+	QETH_QDIO_ALLOCATED,
+	QETH_QDIO_ESTABLISHED,
+	QETH_QDIO_CLEANING
+};
+
+struct qeth_buffer_pool_entry {
+	struct list_head list;
+	struct list_head init_list;
+	void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
+};
+
+struct qeth_qdio_buffer_pool {
+	struct list_head entry_list;
+	int buf_count;
+};
+
+struct qeth_qdio_buffer {
+	struct qdio_buffer *buffer;
+	/* the buffer pool entry currently associated to this buffer */
+	struct qeth_buffer_pool_entry *pool_entry;
+};
+
+struct qeth_qdio_q {
+	struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
+	struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
+	int next_buf_to_init;
+} __attribute__ ((aligned(256)));
+
+/* possible types of qeth large_send support */
+enum qeth_large_send_types {
+	QETH_LARGE_SEND_NO,
+	QETH_LARGE_SEND_EDDP,
+	QETH_LARGE_SEND_TSO,
+};
+
+struct qeth_qdio_out_buffer {
+	struct qdio_buffer *buffer;
+	atomic_t state;
+	int next_element_to_fill;
+	struct sk_buff_head skb_list;
+	struct list_head ctx_list;
+};
+
+struct qeth_card;
+
+enum qeth_out_q_states {
+       QETH_OUT_Q_UNLOCKED,
+       QETH_OUT_Q_LOCKED,
+       QETH_OUT_Q_LOCKED_FLUSH,
+};
+
+struct qeth_qdio_out_q {
+	struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
+	struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
+	int queue_no;
+	struct qeth_card *card;
+	atomic_t state;
+	int do_pack;
+	/*
+	 * index of buffer to be filled by driver; state EMPTY or PACKING
+	 */
+	int next_buf_to_fill;
+	/*
+	 * number of buffers that are currently filled (PRIMED)
+	 * -> these buffers are hardware-owned
+	 */
+	atomic_t used_buffers;
+	/* indicates whether PCI flag must be set (or if one is outstanding) */
+	atomic_t set_pci_flags_count;
+} __attribute__ ((aligned(256)));
+
+struct qeth_qdio_info {
+	atomic_t state;
+	/* input */
+	struct qeth_qdio_q *in_q;
+	struct qeth_qdio_buffer_pool in_buf_pool;
+	struct qeth_qdio_buffer_pool init_pool;
+	int in_buf_size;
+
+	/* output */
+	int no_out_queues;
+	struct qeth_qdio_out_q **out_qs;
+
+	/* priority queueing */
+	int do_prio_queueing;
+	int default_out_queue;
+};
+
+enum qeth_send_errors {
+	QETH_SEND_ERROR_NONE,
+	QETH_SEND_ERROR_LINK_FAILURE,
+	QETH_SEND_ERROR_RETRY,
+	QETH_SEND_ERROR_KICK_IT,
+};
+
+#define QETH_ETH_MAC_V4      0x0100 /* like v4 */
+#define QETH_ETH_MAC_V6      0x3333 /* like v6 */
+/* tr mc mac is longer, but that will be enough to detect mc frames */
+#define QETH_TR_MAC_NC       0xc000 /* non-canonical */
+#define QETH_TR_MAC_C        0x0300 /* canonical */
+
+#define DEFAULT_ADD_HHLEN 0
+#define MAX_ADD_HHLEN 1024
+
+/**
+ * buffer stuff for read channel
+ */
+#define QETH_CMD_BUFFER_NO	8
+
+/**
+ *  channel state machine
+ */
+enum qeth_channel_states {
+	CH_STATE_UP,
+	CH_STATE_DOWN,
+	CH_STATE_ACTIVATING,
+	CH_STATE_HALTED,
+	CH_STATE_STOPPED,
+	CH_STATE_RCD,
+	CH_STATE_RCD_DONE,
+};
+/**
+ * card state machine
+ */
+enum qeth_card_states {
+	CARD_STATE_DOWN,
+	CARD_STATE_HARDSETUP,
+	CARD_STATE_SOFTSETUP,
+	CARD_STATE_UP,
+	CARD_STATE_RECOVER,
+};
+
+/**
+ * Protocol versions
+ */
+enum qeth_prot_versions {
+	QETH_PROT_IPV4 = 0x0004,
+	QETH_PROT_IPV6 = 0x0006,
+};
+
+enum qeth_ip_types {
+	QETH_IP_TYPE_NORMAL,
+	QETH_IP_TYPE_VIPA,
+	QETH_IP_TYPE_RXIP,
+	QETH_IP_TYPE_DEL_ALL_MC,
+};
+
+enum qeth_cmd_buffer_state {
+	BUF_STATE_FREE,
+	BUF_STATE_LOCKED,
+	BUF_STATE_PROCESSED,
+};
+
+struct qeth_ipato {
+	int enabled;
+	int invert4;
+	int invert6;
+	struct list_head entries;
+};
+
+struct qeth_channel;
+
+struct qeth_cmd_buffer {
+	enum qeth_cmd_buffer_state state;
+	struct qeth_channel *channel;
+	unsigned char *data;
+	int rc;
+	void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
+};
+
+/**
+ * definition of a qeth channel, used for read and write
+ */
+struct qeth_channel {
+	enum qeth_channel_states state;
+	struct ccw1 ccw;
+	spinlock_t iob_lock;
+	wait_queue_head_t wait_q;
+	struct tasklet_struct irq_tasklet;
+	struct ccw_device *ccwdev;
+/*command buffer for control data*/
+	struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
+	atomic_t irq_pending;
+	int io_buf_no;
+	int buf_no;
+};
+
+/**
+ *  OSA card related definitions
+ */
+struct qeth_token {
+	__u32 issuer_rm_w;
+	__u32 issuer_rm_r;
+	__u32 cm_filter_w;
+	__u32 cm_filter_r;
+	__u32 cm_connection_w;
+	__u32 cm_connection_r;
+	__u32 ulp_filter_w;
+	__u32 ulp_filter_r;
+	__u32 ulp_connection_w;
+	__u32 ulp_connection_r;
+};
+
+struct qeth_seqno {
+	__u32 trans_hdr;
+	__u32 pdu_hdr;
+	__u32 pdu_hdr_ack;
+	__u16 ipa;
+	__u32 pkt_seqno;
+};
+
+struct qeth_reply {
+	struct list_head list;
+	wait_queue_head_t wait_q;
+	int (*callback)(struct qeth_card *, struct qeth_reply *,
+		unsigned long);
+	u32 seqno;
+	unsigned long offset;
+	atomic_t received;
+	int rc;
+	void *param;
+	struct qeth_card *card;
+	atomic_t refcnt;
+};
+
+
+struct qeth_card_blkt {
+	int time_total;
+	int inter_packet;
+	int inter_packet_jumbo;
+};
+
+#define QETH_BROADCAST_WITH_ECHO    0x01
+#define QETH_BROADCAST_WITHOUT_ECHO 0x02
+#define QETH_LAYER2_MAC_READ	    0x01
+#define QETH_LAYER2_MAC_REGISTERED  0x02
+struct qeth_card_info {
+	unsigned short unit_addr2;
+	unsigned short cula;
+	unsigned short chpid;
+	__u16 func_level;
+	char mcl_level[QETH_MCL_LENGTH + 1];
+	int guestlan;
+	int mac_bits;
+	int portname_required;
+	int portno;
+	char portname[9];
+	enum qeth_card_types type;
+	enum qeth_link_types link_type;
+	int is_multicast_different;
+	int initial_mtu;
+	int max_mtu;
+	int broadcast_capable;
+	int unique_id;
+	struct qeth_card_blkt blkt;
+	__u32 csum_mask;
+	enum qeth_ipa_promisc_modes promisc_mode;
+};
+
+struct qeth_card_options {
+	struct qeth_routing_info route4;
+	struct qeth_ipa_info ipa4;
+	struct qeth_ipa_info adp; /*Adapter parameters*/
+	struct qeth_routing_info route6;
+	struct qeth_ipa_info ipa6;
+	enum qeth_checksum_types checksum_type;
+	int broadcast_mode;
+	int macaddr_mode;
+	int fake_broadcast;
+	int add_hhlen;
+	int fake_ll;
+	int layer2;
+	enum qeth_large_send_types large_send;
+	int performance_stats;
+	int rx_sg_cb;
+};
+
+/*
+ * thread bits for qeth_card thread masks
+ */
+enum qeth_threads {
+	QETH_RECOVER_THREAD = 1,
+};
+
+struct qeth_osn_info {
+	int (*assist_cb)(struct net_device *dev, void *data);
+	int (*data_cb)(struct sk_buff *skb);
+};
+
+enum qeth_discipline_id {
+	QETH_DISCIPLINE_LAYER3 = 0,
+	QETH_DISCIPLINE_LAYER2 = 1,
+};
+
+struct qeth_discipline {
+	qdio_handler_t *input_handler;
+	qdio_handler_t *output_handler;
+	int (*recover)(void *ptr);
+	struct ccwgroup_driver *ccwgdriver;
+};
+
+struct qeth_vlan_vid {
+	struct list_head list;
+	unsigned short vid;
+};
+
+struct qeth_mc_mac {
+	struct list_head list;
+	__u8 mc_addr[MAX_ADDR_LEN];
+	unsigned char mc_addrlen;
+};
+
+struct qeth_card {
+	struct list_head list;
+	enum qeth_card_states state;
+	int lan_online;
+	spinlock_t lock;
+	struct ccwgroup_device *gdev;
+	struct qeth_channel read;
+	struct qeth_channel write;
+	struct qeth_channel data;
+
+	struct net_device *dev;
+	struct net_device_stats stats;
+
+	struct qeth_card_info info;
+	struct qeth_token token;
+	struct qeth_seqno seqno;
+	struct qeth_card_options options;
+
+	wait_queue_head_t wait_q;
+	spinlock_t vlanlock;
+	spinlock_t mclock;
+	struct vlan_group *vlangrp;
+	struct list_head vid_list;
+	struct list_head mc_list;
+	struct work_struct kernel_thread_starter;
+	spinlock_t thread_mask_lock;
+	unsigned long thread_start_mask;
+	unsigned long thread_allowed_mask;
+	unsigned long thread_running_mask;
+	spinlock_t ip_lock;
+	struct list_head ip_list;
+	struct list_head *ip_tbd_list;
+	struct qeth_ipato ipato;
+	struct list_head cmd_waiter_list;
+	/* QDIO buffer handling */
+	struct qeth_qdio_info qdio;
+	struct qeth_perf_stats perf_stats;
+	int use_hard_stop;
+	struct qeth_osn_info osn_info;
+	struct qeth_discipline discipline;
+	atomic_t force_alloc_skb;
+};
+
+struct qeth_card_list_struct {
+	struct list_head list;
+	rwlock_t rwlock;
+};
+
+/*some helper functions*/
+#define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
+
+static inline struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
+{
+	struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
+		dev_get_drvdata(&cdev->dev))->dev);
+	return card;
+}
+
+static inline int qeth_get_micros(void)
+{
+	return (int) (get_clock() >> 12);
+}
+
+static inline void *qeth_push_skb(struct qeth_card *card, struct sk_buff *skb,
+		int size)
+{
+	void *hdr;
+
+	hdr = (void *) skb_push(skb, size);
+	/*
+	 * sanity check, the Linux memory allocation scheme should
+	 * never present us cases like this one (the qdio header size plus
+	 * the first 40 bytes of the paket cross a 4k boundary)
+	 */
+	if ((((unsigned long) hdr) & (~(PAGE_SIZE - 1))) !=
+	    (((unsigned long) hdr + size +
+	    QETH_IP_HEADER_SIZE) & (~(PAGE_SIZE - 1)))) {
+		PRINT_ERR("Misaligned packet on interface %s. Discarded.",
+			QETH_CARD_IFNAME(card));
+		return NULL;
+	}
+	return hdr;
+}
+
+static inline int qeth_get_ip_version(struct sk_buff *skb)
+{
+	switch (skb->protocol) {
+	case ETH_P_IPV6:
+		return 6;
+	case ETH_P_IP:
+		return 4;
+	default:
+		return 0;
+	}
+}
+
+struct qeth_eddp_context;
+extern struct ccwgroup_driver qeth_l2_ccwgroup_driver;
+extern struct ccwgroup_driver qeth_l3_ccwgroup_driver;
+const char *qeth_get_cardname_short(struct qeth_card *);
+int qeth_realloc_buffer_pool(struct qeth_card *, int);
+int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
+void qeth_core_free_discipline(struct qeth_card *);
+int qeth_core_create_device_attributes(struct device *);
+void qeth_core_remove_device_attributes(struct device *);
+int qeth_core_create_osn_attributes(struct device *);
+void qeth_core_remove_osn_attributes(struct device *);
+
+/* exports for qeth discipline device drivers */
+extern struct qeth_card_list_struct qeth_core_card_list;
+extern debug_info_t *qeth_dbf_setup;
+extern debug_info_t *qeth_dbf_data;
+extern debug_info_t *qeth_dbf_misc;
+extern debug_info_t *qeth_dbf_control;
+extern debug_info_t *qeth_dbf_trace;
+extern debug_info_t *qeth_dbf_sense;
+extern debug_info_t *qeth_dbf_qerr;
+
+void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
+int qeth_threads_running(struct qeth_card *, unsigned long);
+int qeth_wait_for_threads(struct qeth_card *, unsigned long);
+int qeth_do_run_thread(struct qeth_card *, unsigned long);
+void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
+void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
+int qeth_core_hardsetup_card(struct qeth_card *);
+void qeth_print_status_message(struct qeth_card *);
+int qeth_init_qdio_queues(struct qeth_card *);
+int qeth_send_startlan(struct qeth_card *);
+int qeth_send_stoplan(struct qeth_card *);
+int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
+		  int (*reply_cb)
+		  (struct qeth_card *, struct qeth_reply *, unsigned long),
+		  void *);
+struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
+			enum qeth_ipa_cmds, enum qeth_prot_versions);
+int qeth_query_setadapterparms(struct qeth_card *);
+int qeth_check_qdio_errors(struct qdio_buffer *, unsigned int,
+		       unsigned int, const char *);
+void qeth_put_buffer_pool_entry(struct qeth_card *,
+			   struct qeth_buffer_pool_entry *);
+void qeth_queue_input_buffer(struct qeth_card *, int);
+struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
+		struct qdio_buffer *, struct qdio_buffer_element **, int *,
+		struct qeth_hdr **);
+void qeth_schedule_recovery(struct qeth_card *);
+void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
+			unsigned int, unsigned int,
+			unsigned int, int, int,
+			unsigned long);
+void qeth_clear_ipacmd_list(struct qeth_card *);
+int qeth_qdio_clear_card(struct qeth_card *, int);
+void qeth_clear_working_pool_list(struct qeth_card *);
+void qeth_clear_cmd_buffers(struct qeth_channel *);
+void qeth_clear_qdio_buffers(struct qeth_card *);
+void qeth_setadp_promisc_mode(struct qeth_card *);
+struct net_device_stats *qeth_get_stats(struct net_device *);
+int qeth_change_mtu(struct net_device *, int);
+int qeth_setadpparms_change_macaddr(struct qeth_card *);
+void qeth_tx_timeout(struct net_device *);
+void qeth_prepare_control_data(struct qeth_card *, int,
+				struct qeth_cmd_buffer *);
+void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
+void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
+struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
+int qeth_mdio_read(struct net_device *, int, int);
+int qeth_snmp_command(struct qeth_card *, char __user *);
+int qeth_set_large_send(struct qeth_card *, enum qeth_large_send_types);
+struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *, __u32, __u32);
+int qeth_default_setadapterparms_cb(struct qeth_card *, struct qeth_reply *,
+					unsigned long);
+int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
+	int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
+	void *reply_param);
+int qeth_get_cast_type(struct qeth_card *, struct sk_buff *);
+int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
+struct sk_buff *qeth_prepare_skb(struct qeth_card *, struct sk_buff *,
+		 struct qeth_hdr **);
+int qeth_get_elements_no(struct qeth_card *, void *, struct sk_buff *, int);
+int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
+			struct sk_buff *, struct qeth_hdr *, int,
+			struct qeth_eddp_context *);
+int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
+		    struct sk_buff *, struct qeth_hdr *,
+		    int, struct qeth_eddp_context *);
+int qeth_core_get_stats_count(struct net_device *);
+void qeth_core_get_ethtool_stats(struct net_device *,
+				struct ethtool_stats *, u64 *);
+void qeth_core_get_strings(struct net_device *, u32, u8 *);
+void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
+
+/* exports for OSN */
+int qeth_osn_assist(struct net_device *, void *, int);
+int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
+		int (*assist_cb)(struct net_device *, void *),
+		int (*data_cb)(struct sk_buff *));
+void qeth_osn_deregister(struct net_device *);
+
+#endif /* __QETH_CORE_H__ */