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linux/drivers/s390/net/qeth_core.h
Ursula Braun b67d801f92 qeth: remove dev_queue_xmit invocation 
For a certain Hipersockets specific error code in the xmit path, the
qeth driver tries to invoke dev_queue_xmit again.
Commit 79640a4ca6 introduces a busylock
causing locking problems in case of re-invoked dev_queue_xmit by qeth.
This patch removes the attempts to retry packet sending with
dev_queue_xmit from the qeth driver.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-08 12:17:08 -08:00

891 lines
24 KiB
C
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/*
* 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 <asm/sysinfo.h>
#include "qeth_core_mpc.h"
/**
* Debug Facility stuff
*/
enum qeth_dbf_names {
QETH_DBF_SETUP,
QETH_DBF_MSG,
QETH_DBF_CTRL,
QETH_DBF_INFOS /* must be last element */
};
struct qeth_dbf_info {
char name[DEBUG_MAX_NAME_LEN];
int pages;
int areas;
int len;
int level;
struct debug_view *view;
debug_info_t *id;
};
#define QETH_DBF_CTRL_LEN 256
#define QETH_DBF_TEXT(name, level, text) \
debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
#define QETH_DBF_HEX(name, level, addr, len) \
debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
#define QETH_DBF_MESSAGE(level, text...) \
debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
#define QETH_DBF_TEXT_(name, level, text...) \
qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
#define QETH_CARD_TEXT(card, level, text) \
debug_text_event(card->debug, level, text)
#define QETH_CARD_HEX(card, level, addr, len) \
debug_event(card->debug, level, (void *)(addr), len)
#define QETH_CARD_MESSAGE(card, text...) \
debug_sprintf_event(card->debug, level, text)
#define QETH_CARD_TEXT_(card, level, text...) \
qeth_dbf_longtext(card->debug, level, text)
#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) dev_name(&card->gdev->dev)
#define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
#define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
#define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
#define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
/**
* 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;
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;
unsigned int tx_csum;
unsigned int tx_lin;
};
/* 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_OSD 0x0101
#define QETH_IDX_FUNC_LEVEL_IQD 0x4108
#define QETH_MODELLIST_ARRAY \
{{0x1731, 0x01, 0x1732, QETH_CARD_TYPE_OSD, QETH_MAX_QUEUES, 0}, \
{0x1731, 0x05, 0x1732, QETH_CARD_TYPE_IQD, QETH_MAX_QUEUES, 0x103}, \
{0x1731, 0x06, 0x1732, QETH_CARD_TYPE_OSN, QETH_MAX_QUEUES, 0}, \
{0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSM, QETH_MAX_QUEUES, 0}, \
{0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSX, QETH_MAX_QUEUES, 0}, \
{0, 0, 0, 0, 0, 0} }
#define QETH_CU_TYPE_IND 0
#define QETH_CU_MODEL_IND 1
#define QETH_DEV_TYPE_IND 2
#define QETH_DEV_MODEL_IND 3
#define QETH_QUEUE_NO_IND 4
#define QETH_MULTICAST_IND 5
#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
/* 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 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_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;
int is_header[16];
};
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;
__u32 tx_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 layer2;
enum qeth_large_send_types large_send;
int performance_stats;
int rx_sg_cb;
enum qeth_ipa_isolation_modes isolation;
int sniffer;
};
/*
* 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 {
void (*start_poll)(struct ccw_device *, int, unsigned long);
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;
int is_vmac;
};
struct qeth_rx {
int b_count;
int b_index;
struct qdio_buffer_element *b_element;
int e_offset;
int qdio_err;
};
#define QETH_NAPI_WEIGHT 128
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;
int read_or_write_problem;
struct qeth_osn_info osn_info;
struct qeth_discipline discipline;
atomic_t force_alloc_skb;
struct service_level qeth_service_level;
struct qdio_ssqd_desc ssqd;
debug_info_t *debug;
struct mutex conf_mutex;
struct mutex discipline_mutex;
struct napi_struct napi;
struct qeth_rx rx;
};
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 int qeth_get_ip_version(struct sk_buff *skb)
{
struct ethhdr *ehdr = (struct ethhdr *)skb->data;
switch (ehdr->h_proto) {
case ETH_P_IPV6:
return 6;
case ETH_P_IP:
return 4;
default:
return 0;
}
}
static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
struct qeth_buffer_pool_entry *entry)
{
list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
}
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 struct kmem_cache *qeth_core_header_cache;
extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
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 qeth_card *, struct qdio_buffer *,
unsigned int, const char *);
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_start_poll(struct ccw_device *, int, unsigned long);
void qeth_qdio_input_handler(struct ccw_device *,
unsigned int, unsigned int, int,
int, unsigned long);
void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
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 *);
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_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
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, int, int);
int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
struct sk_buff *, struct qeth_hdr *, int);
int qeth_core_get_sset_count(struct net_device *, int);
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 *);
void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
int qeth_core_ethtool_get_settings(struct net_device *, struct ethtool_cmd *);
int qeth_set_access_ctrl_online(struct qeth_card *card);
int qeth_hdr_chk_and_bounce(struct sk_buff *, int);
/* 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__ */
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