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OpenCloudOS-Kernel/drivers/s390/net/qeth_core.h

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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/completion.h>
#include <linux/if.h>
#include <linux/if_arp.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/hashtable.h>
#include <linux/ip.h>
#include <linux/refcount.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
#include <net/dst.h>
#include <net/ip6_fib.h>
#include <net/ipv6.h>
#include <net/if_inet6.h>
#include <net/addrconf.h>
#include <net/sch_generic.h>
#include <net/tcp.h>
#include <asm/debug.h>
#include <asm/qdio.h>
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>
#include <asm/sysinfo.h>
#include <uapi/linux/if_link.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 256U
#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
static inline u32 qeth_get_device_id(struct ccw_device *cdev)
{
struct ccw_dev_id dev_id;
u32 id;
ccw_device_get_id(cdev, &dev_id);
id = dev_id.devno;
id |= (u32) (dev_id.ssid << 16);
return id;
}
/*
* 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 CCW_DEVID(cdev) (qeth_get_device_id(cdev))
#define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card)))
/* Routing stuff */
struct qeth_routing_info {
enum qeth_routing_types type;
};
/* IPA stuff */
struct qeth_ipa_info {
__u32 supported_funcs;
__u32 enabled_funcs;
};
/* SETBRIDGEPORT stuff */
enum qeth_sbp_roles {
QETH_SBP_ROLE_NONE = 0,
QETH_SBP_ROLE_PRIMARY = 1,
QETH_SBP_ROLE_SECONDARY = 2,
};
enum qeth_sbp_states {
QETH_SBP_STATE_INACTIVE = 0,
QETH_SBP_STATE_STANDBY = 1,
QETH_SBP_STATE_ACTIVE = 2,
};
#define QETH_SBP_HOST_NOTIFICATION 1
struct qeth_sbp_info {
__u32 supported_funcs;
enum qeth_sbp_roles role;
__u32 hostnotification:1;
__u32 reflect_promisc:1;
__u32 reflect_promisc_primary:1;
};
struct qeth_vnicc_info {
/* supported/currently configured VNICCs; updated in IPA exchanges */
u32 sup_chars;
u32 cur_chars;
/* supported commands: bitmasks which VNICCs support respective cmd */
u32 set_char_sup;
u32 getset_timeout_sup;
/* timeout value for the learning characteristic */
u32 learning_timeout;
/* characteristics wanted/configured by user */
u32 wanted_chars;
/* has user explicitly enabled rx_bcast while online? */
bool rx_bcast_enabled;
};
static inline int qeth_is_adp_supported(struct qeth_ipa_info *ipa,
enum qeth_ipa_setadp_cmd func)
{
return (ipa->supported_funcs & func);
}
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_adp_supported(&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_BUFSIZE 4096
#define CCW_CMD_WRITE 0x01
#define CCW_CMD_READ 0x02
/**
* some more defs
*/
#define QETH_TX_TIMEOUT 100 * HZ
#define QETH_RCD_TIMEOUT 60 * HZ
#define QETH_RECLAIM_WORK_TIME HZ
#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_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */
#define QETH_IQD_MCAST_TXQ 0
#define QETH_IQD_MIN_UCAST_TXQ 1
#define QETH_IN_BUF_SIZE_DEFAULT 65536
#define QETH_IN_BUF_COUNT_DEFAULT 64
#define QETH_IN_BUF_COUNT_HSDEFAULT 128
#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 QETH_PRIO_Q_ING_SKB 3
#define QETH_PRIO_Q_ING_VLAN 4
/* Packing */
#define QETH_LOW_WATERMARK_PACK 2
#define QETH_HIGH_WATERMARK_PACK 5
#define QETH_WATERMARK_PACK_FUZZ 1
/* large receive scatter gather copy break */
#define QETH_RX_SG_CB (PAGE_SIZE >> 1)
#define QETH_RX_PULL_LEN 256
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;
union {
/* TX: */
struct in6_addr ipv6_addr;
struct ipv4 {
u8 res[12];
u32 addr;
} ipv4;
/* RX: */
struct rx {
u8 res1[2];
u8 src_mac[6];
u8 res2[4];
u16 vlan_id;
u8 res3[2];
} rx;
} next_hop;
};
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_L3_TSO = 0x03,
QETH_HEADER_TYPE_OSN = 0x04,
QETH_HEADER_TYPE_L2_TSO = 0x06,
};
/* 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 bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
struct qeth_hdr_layer2 *h2)
{
return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
h1->vlan_id == h2->vlan_id;
}
static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
struct qeth_hdr_layer3 *h2)
{
return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
h1->vlan_id == h2->vlan_id;
}
static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
struct qeth_hdr_layer3 *h2)
{
return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
ipv6_addr_equal(&h1->next_hop.ipv6_addr,
&h2->next_hop.ipv6_addr);
}
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 sk_buff *rx_skb;
};
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;
};
enum qeth_qdio_out_buffer_state {
/* Owned by driver, in order to be filled. */
QETH_QDIO_BUF_EMPTY,
/* Filled by driver; owned by hardware in order to be sent. */
QETH_QDIO_BUF_PRIMED,
/* Identified to be pending in TPQ. */
QETH_QDIO_BUF_PENDING,
/* Found in completion queue. */
QETH_QDIO_BUF_IN_CQ,
/* Handled via transfer pending / completion queue. */
QETH_QDIO_BUF_HANDLED_DELAYED,
};
struct qeth_qdio_out_buffer {
struct qdio_buffer *buffer;
atomic_t state;
int next_element_to_fill;
unsigned int bytes;
struct sk_buff_head skb_list;
int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
struct qeth_qdio_out_q *q;
struct qeth_qdio_out_buffer *next_pending;
};
struct qeth_card;
enum qeth_out_q_states {
QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED,
QETH_OUT_Q_LOCKED_FLUSH,
};
#define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
#define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
#define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
#define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
struct qeth_card_stats {
u64 rx_bufs;
u64 rx_skb_csum;
u64 rx_sg_skbs;
u64 rx_sg_frags;
u64 rx_sg_alloc_page;
/* rtnl_link_stats64 */
u64 rx_packets;
u64 rx_bytes;
u64 rx_errors;
u64 rx_dropped;
u64 rx_multicast;
};
struct qeth_out_q_stats {
u64 bufs;
u64 bufs_pack;
u64 buf_elements;
u64 skbs_pack;
u64 skbs_sg;
u64 skbs_csum;
u64 skbs_tso;
u64 skbs_linearized;
u64 skbs_linearized_fail;
u64 tso_bytes;
u64 packing_mode_switch;
u64 stopped;
u64 completion_yield;
u64 completion_timer;
/* rtnl_link_stats64 */
u64 tx_packets;
u64 tx_bytes;
u64 tx_errors;
u64 tx_dropped;
};
#define QETH_TX_TIMER_USECS 500
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];
struct qdio_outbuf_state *bufstates; /* convenience pointer */
struct qeth_out_q_stats stats;
u8 next_buf_to_fill;
u8 max_elements;
u8 queue_no;
u8 do_pack;
struct qeth_card *card;
atomic_t state;
/*
* 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;
struct napi_struct napi;
struct timer_list timer;
struct qeth_hdr *prev_hdr;
u8 bulk_start;
};
#define qeth_for_each_output_queue(card, q, i) \
for (i = 0; i < card->qdio.no_out_queues && \
(q = card->qdio.out_qs[i]); i++)
#define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue)
{
if (timer_pending(&queue->timer))
return;
mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) +
jiffies);
}
static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
{
return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
}
static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
{
return atomic_read(&queue->used_buffers) == 0;
}
struct qeth_qdio_info {
atomic_t state;
/* input */
int no_in_queues;
struct qeth_qdio_q *in_q;
struct qeth_qdio_q *c_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[QETH_MAX_QUEUES];
struct qdio_outbuf_state *out_bufstates;
/* priority queueing */
int do_prio_queueing;
int default_out_queue;
};
/**
* channel state machine
*/
enum qeth_channel_states {
CH_STATE_UP,
CH_STATE_DOWN,
CH_STATE_HALTED,
CH_STATE_STOPPED,
};
/**
* card state machine
*/
enum qeth_card_states {
CARD_STATE_DOWN,
CARD_STATE_HARDSETUP,
CARD_STATE_SOFTSETUP,
};
/**
* Protocol versions
*/
enum qeth_prot_versions {
QETH_PROT_NONE = 0x0000,
QETH_PROT_IPV4 = 0x0004,
QETH_PROT_IPV6 = 0x0006,
};
enum qeth_cq {
QETH_CQ_DISABLED = 0,
QETH_CQ_ENABLED = 1,
QETH_CQ_NOTAVAILABLE = 2,
};
struct qeth_ipato {
bool enabled;
bool invert4;
bool invert6;
struct list_head entries;
};
struct qeth_channel {
struct ccw_device *ccwdev;
enum qeth_channel_states state;
atomic_t irq_pending;
};
struct qeth_reply {
int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data);
void *param;
};
struct qeth_cmd_buffer {
struct list_head list;
struct completion done;
spinlock_t lock;
unsigned int length;
refcount_t ref_count;
struct qeth_channel *channel;
struct qeth_reply reply;
long timeout;
unsigned char *data;
void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
unsigned int data_length);
int rc;
};
static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
{
refcount_inc(&iob->ref_count);
}
static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
{
return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
}
static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
{
return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
}
static inline bool qeth_trylock_channel(struct qeth_channel *channel)
{
return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0;
}
/**
* 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;
};
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_REGISTERED 0x02
struct qeth_card_info {
unsigned short unit_addr2;
unsigned short cula;
u8 chpid;
__u16 func_level;
char mcl_level[QETH_MCL_LENGTH + 1];
u8 open_when_online:1;
u8 promisc_mode:1;
u8 use_v1_blkt:1;
u8 is_vm_nic:1;
int mac_bits;
enum qeth_card_types type;
enum qeth_link_types link_type;
int broadcast_capable;
int unique_id;
bool layer_enforced;
struct qeth_card_blkt blkt;
__u32 diagass_support;
__u32 hwtrap;
};
enum qeth_discipline_id {
QETH_DISCIPLINE_UNDETERMINED = -1,
QETH_DISCIPLINE_LAYER3 = 0,
QETH_DISCIPLINE_LAYER2 = 1,
};
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;
struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
struct qeth_vnicc_info vnicc; /* VNICC options */
int fake_broadcast;
enum qeth_discipline_id layer;
int rx_sg_cb;
enum qeth_ipa_isolation_modes isolation;
enum qeth_ipa_isolation_modes prev_isolation;
int sniffer;
enum qeth_cq cq;
char hsuid[9];
};
#define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
#define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
/*
* 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);
};
struct qeth_discipline {
const struct device_type *devtype;
int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
int (*recover)(void *ptr);
int (*setup) (struct ccwgroup_device *);
void (*remove) (struct ccwgroup_device *);
int (*set_online) (struct ccwgroup_device *);
int (*set_offline) (struct ccwgroup_device *);
int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
int (*control_event_handler)(struct qeth_card *card,
struct qeth_ipa_cmd *cmd);
};
enum qeth_addr_disposition {
QETH_DISP_ADDR_DELETE = 0,
QETH_DISP_ADDR_DO_NOTHING = 1,
QETH_DISP_ADDR_ADD = 2,
};
struct qeth_rx {
int b_count;
int b_index;
struct qdio_buffer_element *b_element;
int e_offset;
int qdio_err;
};
struct carrier_info {
__u8 card_type;
__u16 port_mode;
__u32 port_speed;
};
struct qeth_switch_info {
__u32 capabilities;
__u32 settings;
};
#define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
struct qeth_card {
enum qeth_card_states state;
spinlock_t lock;
struct ccwgroup_device *gdev;
struct qeth_cmd_buffer *read_cmd;
struct qeth_channel read;
struct qeth_channel write;
struct qeth_channel data;
struct net_device *dev;
struct qeth_card_stats stats;
struct qeth_card_info info;
struct qeth_token token;
struct qeth_seqno seqno;
struct qeth_card_options options;
struct workqueue_struct *event_wq;
struct workqueue_struct *cmd_wq;
wait_queue_head_t wait_q;
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
DECLARE_HASHTABLE(mac_htable, 4);
DECLARE_HASHTABLE(ip_htable, 4);
struct mutex ip_lock;
DECLARE_HASHTABLE(ip_mc_htable, 4);
struct work_struct rx_mode_work;
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;
struct qeth_ipato ipato;
struct list_head cmd_waiter_list;
/* QDIO buffer handling */
struct qeth_qdio_info qdio;
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 delayed_work buffer_reclaim_work;
int reclaim_index;
struct work_struct close_dev_work;
};
static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
{
return card->state == CARD_STATE_SOFTSETUP;
}
struct qeth_trap_id {
__u16 lparnr;
char vmname[8];
__u8 chpid;
__u8 ssid;
__u16 devno;
} __packed;
/*some helper functions*/
#define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
static inline bool qeth_netdev_is_registered(struct net_device *dev)
{
return dev->netdev_ops != NULL;
}
static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
{
if (txq == QETH_IQD_MCAST_TXQ)
return dev->num_tx_queues - 1;
if (txq == dev->num_tx_queues - 1)
return QETH_IQD_MCAST_TXQ;
return txq;
}
static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
unsigned int elements)
{
unsigned int i;
for (i = 0; i < elements; i++)
memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
buf->element[14].sflags = 0;
buf->element[15].sflags = 0;
}
/**
* qeth_get_elements_for_range() - find number of SBALEs to cover range.
* @start: Start of the address range.
* @end: Address after the end of the range.
*
* Returns the number of pages, and thus QDIO buffer elements, needed to cover
* the specified address range.
*/
static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
{
return PFN_UP(end) - PFN_DOWN(start);
}
static inline int qeth_get_ip_version(struct sk_buff *skb)
{
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
__be16 prot = veth->h_vlan_proto;
if (prot == htons(ETH_P_8021Q))
prot = veth->h_vlan_encapsulated_proto;
switch (prot) {
case htons(ETH_P_IPV6):
return 6;
case htons(ETH_P_IP):
return 4;
default:
return 0;
}
}
static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
{
u8 *addr = eth_hdr(skb)->h_dest;
if (is_multicast_ether_addr(addr))
return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
RTN_MULTICAST;
return RTN_UNICAST;
}
static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv)
{
struct dst_entry *dst = skb_dst(skb);
struct rt6_info *rt;
rt = (struct rt6_info *) dst;
if (dst)
dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0);
return dst;
}
static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb,
u8 flags)
{
if ((card->dev->features & NETIF_F_RXCSUM) &&
(flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
QETH_CARD_STAT_INC(card, rx_skb_csum);
} else {
skb->ip_summed = CHECKSUM_NONE;
}
}
static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
{
*flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
(ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
*flags |= QETH_HDR_EXT_UDP;
}
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);
}
static inline int qeth_is_diagass_supported(struct qeth_card *card,
enum qeth_diags_cmds cmd)
{
return card->info.diagass_support & (__u32)cmd;
}
int qeth_send_simple_setassparms_prot(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
u16 cmd_code, u32 *data,
enum qeth_prot_versions prot);
/* IPv4 variant */
static inline int qeth_send_simple_setassparms(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
u16 cmd_code, u32 *data)
{
return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
data, QETH_PROT_IPV4);
}
static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
u16 cmd_code, u32 *data)
{
return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
data, QETH_PROT_IPV6);
}
int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
extern struct qeth_discipline qeth_l2_discipline;
extern struct qeth_discipline qeth_l3_discipline;
extern const struct ethtool_ops qeth_ethtool_ops;
extern const struct ethtool_ops qeth_osn_ethtool_ops;
extern const struct attribute_group *qeth_generic_attr_groups[];
extern const struct attribute_group *qeth_osn_attr_groups[];
extern const struct attribute_group qeth_device_attr_group;
extern const struct attribute_group qeth_device_blkt_group;
extern const struct device_type qeth_generic_devtype;
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 *);
/* exports for qeth discipline device drivers */
extern struct kmem_cache *qeth_core_header_cache;
extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
struct net_device *qeth_clone_netdev(struct net_device *orig);
struct qeth_card *qeth_get_card_by_busid(char *bus_id);
void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
int qeth_threads_running(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 *card, bool *carrier_ok);
void qeth_print_status_message(struct qeth_card *);
int qeth_init_qdio_queues(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_ipa_alloc_cmd(struct qeth_card *card,
enum qeth_ipa_cmds cmd_code,
enum qeth_prot_versions prot,
unsigned int data_length);
struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
unsigned int length, unsigned int ccws,
long timeout);
struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
u16 cmd_code,
unsigned int data_length,
enum qeth_prot_versions prot);
struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
enum qeth_diags_cmds sub_cmd,
unsigned int data_length);
void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason);
void qeth_put_cmd(struct qeth_cmd_buffer *iob);
struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
struct qeth_hdr **);
void qeth_schedule_recovery(struct qeth_card *);
int qeth_poll(struct napi_struct *napi, int budget);
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_drain_output_queues(struct qeth_card *card);
void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
int qeth_setadpparms_change_macaddr(struct qeth_card *);
void qeth_tx_timeout(struct net_device *);
void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
u16 cmd_length);
int qeth_query_switch_attributes(struct qeth_card *card,
struct qeth_switch_info *sw_info);
int qeth_query_card_info(struct qeth_card *card,
struct carrier_info *carrier_info);
unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset);
int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
struct sk_buff *skb, struct qeth_hdr *hdr,
unsigned int offset, unsigned int hd_len,
int elements_needed);
int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
void qeth_trace_features(struct qeth_card *);
int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
int qeth_set_features(struct net_device *, netdev_features_t);
void qeth_enable_hw_features(struct net_device *dev);
netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
netdev_features_t qeth_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features);
void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
u8 cast_type, struct net_device *sb_dev);
int qeth_open(struct net_device *dev);
int qeth_stop(struct net_device *dev);
int qeth_vm_request_mac(struct qeth_card *card);
int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
struct qeth_qdio_out_q *queue, int ipv,
void (*fill_header)(struct qeth_qdio_out_q *queue,
struct qeth_hdr *hdr, struct sk_buff *skb,
int ipv, unsigned int data_len));
/* 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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