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android_kernel_motorola_sm6225/drivers/s390/net/qeth.h
Frank Blaschka aa617aa956 s390: scatter-gather for inbound traffic in qeth driver 
For large incoming packets > PAGE_SIZE/2 qeth creates a fragmented skb
by adding pointers to qdio pages to the fragment list of the skb.
This avoids allocating big chunks of consecutive memory. Also copying
data from the qdio buffer to the skb is economized.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-16 18:28:04 -04:00

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#ifndef __QETH_H__
#define __QETH_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 <net/ipv6.h>
#include <linux/in6.h>
#include <net/if_inet6.h>
#include <net/addrconf.h>
#include <linux/bitops.h>
#include <asm/debug.h>
#include <asm/qdio.h>
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>
#include "qeth_mpc.h"
#ifdef CONFIG_QETH_IPV6
#define QETH_VERSION_IPV6 ":IPv6"
#else
#define QETH_VERSION_IPV6 ""
#endif
#ifdef CONFIG_QETH_VLAN
#define QETH_VERSION_VLAN ":VLAN"
#else
#define QETH_VERSION_VLAN ""
#endif
/**
* 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 2
#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 2
#define QETH_DBF_TRACE_LEVEL 3
extern debug_info_t *qeth_dbf_trace;
#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 2
#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)
DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);
#define QETH_DBF_TEXT_(name,level,text...) \
do { \
char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf); \
sprintf(dbf_txt_buf, text); \
debug_text_event(qeth_dbf_##name,level,dbf_txt_buf); \
put_cpu_var(qeth_dbf_txt_buf); \
} while (0)
#define QETH_DBF_SPRINTF(name,level,text...) \
do { \
debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
debug_sprintf_event(qeth_dbf_trace, level, text ); \
} while (0)
/**
* some more debug stuff
*/
#define PRINTK_HEADER "qeth: "
#define HEXDUMP16(importance,header,ptr) \
PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
"%02x %02x %02x %02x %02x %02x %02x %02x\n", \
*(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
*(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
*(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
*(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
*(((char*)ptr)+12),*(((char*)ptr)+13), \
*(((char*)ptr)+14),*(((char*)ptr)+15)); \
PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
"%02x %02x %02x %02x %02x %02x %02x %02x\n", \
*(((char*)ptr)+16),*(((char*)ptr)+17), \
*(((char*)ptr)+18),*(((char*)ptr)+19), \
*(((char*)ptr)+20),*(((char*)ptr)+21), \
*(((char*)ptr)+22),*(((char*)ptr)+23), \
*(((char*)ptr)+24),*(((char*)ptr)+25), \
*(((char*)ptr)+26),*(((char*)ptr)+27), \
*(((char*)ptr)+28),*(((char*)ptr)+29), \
*(((char*)ptr)+30),*(((char*)ptr)+31));
static inline void
qeth_hex_dump(unsigned char *buf, size_t len)
{
size_t i;
for (i = 0; i < len; i++) {
if (i && !(i % 16))
printk("\n");
printk("%02x ", *(buf + i));
}
printk("\n");
}
#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
*/
extern struct device *qeth_root_dev;
extern struct ccw_driver qeth_ccw_driver;
extern struct ccwgroup_driver qeth_ccwgroup_driver;
#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
#define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
((struct ccwgroup_device *)cdev->dev.driver_data)\
->dev.driver_data;
/**
* 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)
#ifdef CONFIG_QETH_IPV6
#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)
#else /* CONFIG_QETH_IPV6 */
#define qeth_is_supported6(c,f) 0
#define qeth_is_enabled6(c,f) 0
#endif /* CONFIG_QETH_IPV6 */
#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 IF_NAME_LEN 16
#define QETH_TX_TIMEOUT 100 * HZ
#define QETH_RCD_TIMEOUT 60 * HZ
#define QETH_HEADER_SIZE 32
#define MAX_PORTNO 15
#define QETH_FAKE_LL_LEN_ETH ETH_HLEN
#define QETH_FAKE_LL_LEN_TR (sizeof(struct trh_hdr)-TR_MAXRIFLEN+sizeof(struct trllc))
#define QETH_FAKE_LL_V6_ADDR_POS 24
/*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;
volatile enum qeth_qdio_buffer_states state;
/* 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];
/*
* buf_to_init means "buffer must be initialized by driver and must
* be made available for hardware" -> state is set to EMPTY
*/
volatile 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;
volatile 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;
volatile int do_pack;
/*
* index of buffer to be filled by driver; state EMPTY or PACKING
*/
volatile 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,
};
/**
* IP address and multicast list
*/
struct qeth_ipaddr {
struct list_head entry;
enum qeth_ip_types type;
enum qeth_ipa_setdelip_flags set_flags;
enum qeth_ipa_setdelip_flags del_flags;
int is_multicast;
volatile int users;
enum qeth_prot_versions proto;
unsigned char mac[OSA_ADDR_LEN];
union {
struct {
unsigned int addr;
unsigned int mask;
} a4;
struct {
struct in6_addr addr;
unsigned int pfxlen;
} a6;
} u;
};
struct qeth_ipato_entry {
struct list_head entry;
enum qeth_prot_versions proto;
char addr[16];
int mask_bits;
};
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;
volatile int io_buf_no;
volatile 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*/
#ifdef CONFIG_QETH_IPV6
struct qeth_routing_info route6;
struct qeth_ipa_info ipa6;
#endif /* QETH_IPV6 */
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_SET_IP_THREAD = 1,
QETH_RECOVER_THREAD = 2,
QETH_SET_PROMISC_MODE_THREAD = 4,
};
struct qeth_osn_info {
int (*assist_cb)(struct net_device *dev, void *data);
int (*data_cb)(struct sk_buff *skb);
};
struct qeth_card {
struct list_head list;
enum qeth_card_states state;
int lan_online;
spinlock_t lock;
/*hardware and sysfs stuff*/
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;
#ifdef CONFIG_QETH_VLAN
spinlock_t vlanlock;
struct vlan_group *vlangrp;
#endif
struct work_struct kernel_thread_starter;
spinlock_t thread_mask_lock;
volatile unsigned long thread_start_mask;
volatile unsigned long thread_allowed_mask;
volatile 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 (*orig_hard_header)(struct sk_buff *,struct net_device *,
unsigned short,void *,void *,unsigned);
struct qeth_osn_info osn_info;
atomic_t force_alloc_skb;
};
struct qeth_card_list_struct {
struct list_head list;
rwlock_t rwlock;
};
extern struct qeth_card_list_struct qeth_card_list;
/*notifier list */
struct qeth_notify_list_struct {
struct list_head list;
struct task_struct *task;
int signum;
};
extern spinlock_t qeth_notify_lock;
extern struct list_head qeth_notify_list;
/*some helper functions*/
#define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
static inline __u8
qeth_get_ipa_adp_type(enum qeth_link_types link_type)
{
switch (link_type) {
case QETH_LINK_TYPE_HSTR:
return 2;
default:
return 1;
}
}
static inline struct sk_buff *
qeth_realloc_headroom(struct qeth_card *card, struct sk_buff *skb, int size)
{
struct sk_buff *new_skb = skb;
if (skb_headroom(skb) >= size)
return skb;
new_skb = skb_realloc_headroom(skb, size);
if (!new_skb)
PRINT_ERR("Could not realloc headroom for qeth_hdr "
"on interface %s", QETH_CARD_IFNAME(card));
return new_skb;
}
static inline struct sk_buff *
qeth_pskb_unshare(struct sk_buff *skb, gfp_t pri)
{
struct sk_buff *nskb;
if (!skb_cloned(skb))
return skb;
nskb = skb_copy(skb, pri);
return nskb;
}
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_hlen(__u8 link_type)
{
#ifdef CONFIG_QETH_IPV6
switch (link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
return sizeof(struct qeth_hdr_tso) + TR_HLEN;
default:
#ifdef CONFIG_QETH_VLAN
return sizeof(struct qeth_hdr_tso) + VLAN_ETH_HLEN;
#else
return sizeof(struct qeth_hdr_tso) + ETH_HLEN;
#endif
}
#else /* CONFIG_QETH_IPV6 */
#ifdef CONFIG_QETH_VLAN
return sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
#else
return sizeof(struct qeth_hdr_tso);
#endif
#endif /* CONFIG_QETH_IPV6 */
}
static inline unsigned short
qeth_get_netdev_flags(struct qeth_card *card)
{
if (card->options.layer2 &&
(card->info.type == QETH_CARD_TYPE_OSAE))
return 0;
switch (card->info.type) {
case QETH_CARD_TYPE_IQD:
case QETH_CARD_TYPE_OSN:
return IFF_NOARP;
#ifdef CONFIG_QETH_IPV6
default:
return 0;
#else
default:
return IFF_NOARP;
#endif
}
}
static inline int
qeth_get_initial_mtu_for_card(struct qeth_card * card)
{
switch (card->info.type) {
case QETH_CARD_TYPE_UNKNOWN:
return 1500;
case QETH_CARD_TYPE_IQD:
return card->info.max_mtu;
case QETH_CARD_TYPE_OSAE:
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
return 2000;
default:
return 1492;
}
default:
return 1500;
}
}
static inline int
qeth_get_max_mtu_for_card(int cardtype)
{
switch (cardtype) {
case QETH_CARD_TYPE_UNKNOWN:
case QETH_CARD_TYPE_OSAE:
case QETH_CARD_TYPE_OSN:
return 61440;
case QETH_CARD_TYPE_IQD:
return 57344;
default:
return 1500;
}
}
static inline int
qeth_get_mtu_out_of_mpc(int cardtype)
{
switch (cardtype) {
case QETH_CARD_TYPE_IQD:
return 1;
default:
return 0;
}
}
static inline int
qeth_get_mtu_outof_framesize(int framesize)
{
switch (framesize) {
case 0x4000:
return 8192;
case 0x6000:
return 16384;
case 0xa000:
return 32768;
case 0xffff:
return 57344;
default:
return 0;
}
}
static inline int
qeth_mtu_is_valid(struct qeth_card * card, int mtu)
{
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
return ((mtu >= 576) && (mtu <= 61440));
case QETH_CARD_TYPE_IQD:
return ((mtu >= 576) &&
(mtu <= card->info.max_mtu + 4096 - 32));
case QETH_CARD_TYPE_OSN:
case QETH_CARD_TYPE_UNKNOWN:
default:
return 1;
}
}
static inline int
qeth_get_arphdr_type(int cardtype, int linktype)
{
switch (cardtype) {
case QETH_CARD_TYPE_OSAE:
case QETH_CARD_TYPE_OSN:
switch (linktype) {
case QETH_LINK_TYPE_LANE_TR:
case QETH_LINK_TYPE_HSTR:
return ARPHRD_IEEE802_TR;
default:
return ARPHRD_ETHER;
}
case QETH_CARD_TYPE_IQD:
default:
return ARPHRD_ETHER;
}
}
static inline int
qeth_get_micros(void)
{
return (int) (get_clock() >> 12);
}
static inline int
qeth_get_qdio_q_format(struct qeth_card *card)
{
switch (card->info.type) {
case QETH_CARD_TYPE_IQD:
return 2;
default:
return 0;
}
}
static inline int
qeth_isxdigit(char * buf)
{
while (*buf) {
if (!isxdigit(*buf++))
return 0;
}
return 1;
}
static inline void
qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
{
sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
}
static inline int
qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
{
int count = 0, rc = 0;
int in[4];
char c;
rc = sscanf(buf, "%u.%u.%u.%u%c",
&in[0], &in[1], &in[2], &in[3], &c);
if (rc != 4 && (rc != 5 || c != '\n'))
return -EINVAL;
for (count = 0; count < 4; count++) {
if (in[count] > 255)
return -EINVAL;
addr[count] = in[count];
}
return 0;
}
static inline void
qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
{
sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
addr[0], addr[1], addr[2], addr[3],
addr[4], addr[5], addr[6], addr[7],
addr[8], addr[9], addr[10], addr[11],
addr[12], addr[13], addr[14], addr[15]);
}
static inline int
qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
{
const char *end, *end_tmp, *start;
__u16 *in;
char num[5];
int num2, cnt, out, found, save_cnt;
unsigned short in_tmp[8] = {0, };
cnt = out = found = save_cnt = num2 = 0;
end = start = buf;
in = (__u16 *) addr;
memset(in, 0, 16);
while (*end) {
end = strchr(start,':');
if (end == NULL) {
end = buf + strlen(buf);
if ((end_tmp = strchr(start, '\n')) != NULL)
end = end_tmp;
out = 1;
}
if ((end - start)) {
memset(num, 0, 5);
if ((end - start) > 4)
return -EINVAL;
memcpy(num, start, end - start);
if (!qeth_isxdigit(num))
return -EINVAL;
sscanf(start, "%x", &num2);
if (found)
in_tmp[save_cnt++] = num2;
else
in[cnt++] = num2;
if (out)
break;
} else {
if (found)
return -EINVAL;
found = 1;
}
start = ++end;
}
if (cnt + save_cnt > 8)
return -EINVAL;
cnt = 7;
while (save_cnt)
in[cnt--] = in_tmp[--save_cnt];
return 0;
}
static inline void
qeth_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
char *buf)
{
if (proto == QETH_PROT_IPV4)
return qeth_ipaddr4_to_string(addr, buf);
else if (proto == QETH_PROT_IPV6)
return qeth_ipaddr6_to_string(addr, buf);
}
static inline int
qeth_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
__u8 *addr)
{
if (proto == QETH_PROT_IPV4)
return qeth_string_to_ipaddr4(buf, addr);
else if (proto == QETH_PROT_IPV6)
return qeth_string_to_ipaddr6(buf, addr);
else
return -EINVAL;
}
extern int
qeth_setrouting_v4(struct qeth_card *);
extern int
qeth_setrouting_v6(struct qeth_card *);
extern int
qeth_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
extern void
qeth_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions, u8 *, int);
extern int
qeth_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
extern void
qeth_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
extern int
qeth_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
extern void
qeth_del_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
extern int
qeth_notifier_register(struct task_struct *, int );
extern int
qeth_notifier_unregister(struct task_struct * );
extern void
qeth_schedule_recovery(struct qeth_card *);
extern int
qeth_realloc_buffer_pool(struct qeth_card *, int);
extern int
qeth_set_large_send(struct qeth_card *, enum qeth_large_send_types);
extern void
qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
struct sk_buff *, int, int);
extern void
qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);
extern int
qeth_osn_assist(struct net_device *, void *, int);
extern 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 *));
extern void
qeth_osn_deregister(struct net_device *);
#endif /* __QETH_H__ */
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