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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/debugfs.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/rcupdate.h>
#include <linux/refcount.h>
#include <linux/timer.h>
#include <linux/types.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/route.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;
};
/* 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;
};
#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
/*****************************************************************************/
/* QDIO queue and buffer handling */
/*****************************************************************************/
#define QETH_MAX_OUT_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_MAX_IN_QUEUES 2
#define QETH_RX_COPYBREAK (PAGE_SIZE >> 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 8U
#define QETH_IN_BUF_COUNT_MAX 128U
#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
#define QETH_PRIO_Q_ING_FIXED 5
/* Packing */
#define QETH_LOW_WATERMARK_PACK 2
#define QETH_HIGH_WATERMARK_PACK 5
#define QETH_WATERMARK_PACK_FUZZ 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;
union {
/* TX: */
struct in6_addr addr;
/* 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 {
union {
struct qeth_hdr_layer2 l2;
struct qeth_hdr_layer3 l3;
} hdr;
} __attribute__ ((packed));
#define QETH_QIB_PQUE_ORDER_RR 0
#define QETH_QIB_PQUE_UNITS_SBAL 2
#define QETH_QIB_PQUE_PRIO_DEFAULT 4
struct qeth_qib_parms {
char pcit_magic[4];
u32 pcit_a;
u32 pcit_b;
u32 pcit_c;
char blkt_magic[4];
u32 blkt_total;
u32 blkt_inter_packet;
u32 blkt_inter_packet_jumbo;
char pque_magic[4];
u8 pque_order;
u8 pque_units;
u16 reserved;
u32 pque_priority[4];
};
/*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_L2_TSO = 0x06,
QETH_HEADER_MASK_INVAL = 0x80,
};
/* 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.addr, &h2->next_hop.addr);
}
struct qeth_local_addr {
struct hlist_node hnode;
struct rcu_head rcu;
struct in6_addr 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;
struct page *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,
};
enum qeth_qaob_state {
QETH_QAOB_ISSUED,
QETH_QAOB_PENDING,
QETH_QAOB_DONE,
};
struct qeth_qaob_priv1 {
unsigned int state;
u8 queue_no;
};
struct qeth_qdio_out_buffer {
struct qdio_buffer *buffer;
atomic_t state;
int next_element_to_fill;
unsigned int frames;
unsigned int bytes;
struct sk_buff_head skb_list;
DECLARE_BITMAP(from_kmem_cache, QDIO_MAX_ELEMENTS_PER_BUFFER);
struct list_head list_entry;
struct qaob *aob;
};
struct qeth_card;
#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;
u64 rx_dropped_nomem;
u64 rx_dropped_notsupp;
u64 rx_dropped_runt;
/* rtnl_link_stats64 */
u64 rx_packets;
u64 rx_bytes;
u64 rx_multicast;
u64 rx_length_errors;
u64 rx_frame_errors;
u64 rx_fifo_errors;
};
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 doorbell;
u64 coal_frames;
u64 completion_irq;
u64 completion_yield;
u64 completion_timer;
/* rtnl_link_stats64 */
u64 tx_packets;
u64 tx_bytes;
u64 tx_errors;
u64 tx_dropped;
};
#define QETH_TX_MAX_COALESCED_FRAMES 1
#define QETH_TX_COALESCE_USECS 25
#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 list_head pending_bufs;
struct qeth_out_q_stats stats;
spinlock_t lock;
unsigned int priority;
u8 next_buf_to_fill;
u8 max_elements;
u8 queue_no;
u8 do_pack;
struct qeth_card *card;
/*
* 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;
unsigned int coalesced_frames;
u8 bulk_start;
u8 bulk_count;
u8 bulk_max;
unsigned int coalesce_usecs;
unsigned int max_coalesced_frames;
unsigned int rescan_usecs;
};
#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,
unsigned long usecs)
{
timer_reduce(&queue->timer, usecs_to_jiffies(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 */
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 */
unsigned int no_out_queues;
struct qeth_qdio_out_q *out_qs[QETH_MAX_OUT_QUEUES];
/* 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_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;
struct qeth_cmd_buffer *active_cmd;
enum qeth_channel_states state;
};
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_entry;
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);
bool (*match)(struct qeth_cmd_buffer *iob,
struct qeth_cmd_buffer *reply);
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_reply(struct qeth_cmd_buffer *iob)
{
if (!IS_IPA(iob->data))
return NULL;
return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
}
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));
}
/**
* 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;
};
enum qeth_pnso_mode {
QETH_PNSO_NONE,
QETH_PNSO_BRIDGEPORT,
QETH_PNSO_ADDR_INFO,
};
enum qeth_link_mode {
QETH_LINK_MODE_UNKNOWN,
QETH_LINK_MODE_FIBRE_SHORT,
QETH_LINK_MODE_FIBRE_LONG,
};
struct qeth_link_info {
u32 speed;
u8 duplex;
u8 port;
enum qeth_link_mode link_mode;
};
#define QETH_BROADCAST_WITH_ECHO 0x01
#define QETH_BROADCAST_WITHOUT_ECHO 0x02
struct qeth_card_info {
unsigned short unit_addr2;
unsigned short cula;
__u16 func_level;
char mcl_level[QETH_MCL_LENGTH + 1];
/* doubleword below corresponds to net_if_token */
u16 ddev_devno;
u8 cssid;
u8 iid;
u8 ssid;
u8 chpid;
u16 chid;
u8 ids_valid:1; /* cssid,iid,chid */
u8 dev_addr_is_registered:1;
u8 open_when_online:1;
u8 promisc_mode:1;
u8 use_v1_blkt:1;
u8 is_vm_nic:1;
/* no bitfield, we take a pointer on these two: */
u8 has_lp2lp_cso_v6;
u8 has_lp2lp_cso_v4;
enum qeth_pnso_mode pnso_mode;
enum qeth_card_types type;
enum qeth_link_types link_type;
int broadcast_capable;
bool layer_enforced;
struct qeth_card_blkt blkt;
__u32 diagass_support;
__u32 hwtrap;
struct qeth_link_info link_info;
};
enum qeth_discipline_id {
QETH_DISCIPLINE_UNDETERMINED = -1,
QETH_DISCIPLINE_LAYER3 = 0,
QETH_DISCIPLINE_LAYER2 = 1,
};
struct qeth_card_options {
struct qeth_ipa_caps ipa4;
struct qeth_ipa_caps ipa6;
struct qeth_routing_info route4;
struct qeth_routing_info route6;
struct qeth_ipa_caps adp; /* Adapter parameters */
struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
struct qeth_vnicc_info vnicc; /* VNICC options */
enum qeth_discipline_id layer;
enum qeth_ipa_isolation_modes 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_discipline {
int (*setup) (struct ccwgroup_device *);
void (*remove) (struct ccwgroup_device *);
int (*set_online)(struct qeth_card *card, bool carrier_ok);
void (*set_offline)(struct qeth_card *card);
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;
u8 buf_element;
int e_offset;
int qdio_err;
u8 bufs_refill;
};
struct qeth_switch_info {
__u32 capabilities;
__u32 settings;
};
struct qeth_priv {
unsigned int rx_copybreak;
unsigned int tx_wanted_queues;
u32 brport_hw_features;
u32 brport_features;
};
#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 dentry *debugfs;
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;
struct mutex ip_lock;
/* protected by ip_lock: */
DECLARE_HASHTABLE(ip_htable, 4);
struct qeth_ipato ipato;
DECLARE_HASHTABLE(local_addrs4, 4);
DECLARE_HASHTABLE(local_addrs6, 4);
spinlock_t local_addrs4_lock;
spinlock_t local_addrs6_lock;
DECLARE_HASHTABLE(rx_mode_addrs, 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 list_head cmd_waiter_list;
/* QDIO buffer handling */
struct qeth_qdio_info qdio;
int read_or_write_problem;
const 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 sbp_lock;
struct mutex conf_mutex;
struct mutex discipline_mutex;
struct napi_struct napi;
struct qeth_rx rx;
struct delayed_work buffer_reclaim_work;
};
static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
{
return card->state == CARD_STATE_SOFTSETUP;
}
static inline bool qeth_use_tx_irqs(struct qeth_card *card)
{
return !IS_IQD(card);
}
static inline void qeth_unlock_channel(struct qeth_card *card,
struct qeth_channel *channel)
{
xchg(&channel->active_cmd, NULL);
wake_up(&card->wait_q);
}
static inline bool qeth_trylock_channel(struct qeth_channel *channel,
struct qeth_cmd_buffer *cmd)
{
return cmpxchg(&channel->active_cmd, NULL, cmd) == NULL;
}
struct qeth_trap_id {
__u16 lparnr;
char vmname[8];
__u8 chpid;
__u8 ssid;
__u16 devno;
} __packed;
static inline bool qeth_uses_tx_prio_queueing(struct qeth_card *card)
{
return card->qdio.do_prio_queueing != QETH_NO_PRIO_QUEUEING;
}
static inline unsigned int qeth_tx_actual_queues(struct qeth_card *card)
{
struct qeth_priv *priv = netdev_priv(card->dev);
if (qeth_uses_tx_prio_queueing(card))
return min(card->dev->num_tx_queues, card->qdio.no_out_queues);
return min(priv->tx_wanted_queues, card->qdio.no_out_queues);
}
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 bool qeth_iqd_is_mcast_queue(struct qeth_card *card,
struct qeth_qdio_out_q *queue)
{
return qeth_iqd_translate_txq(card->dev, queue->queue_no) ==
QETH_IQD_MCAST_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_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,
__be16 proto)
{
struct dst_entry *dst = skb_dst(skb);
struct rt6_info *rt;
rt = (struct rt6_info *) dst;
if (dst) {
if (proto == htons(ETH_P_IPV6))
dst = dst_check(dst, rt6_get_cookie(rt));
else
dst = dst_check(dst, 0);
}
return dst;
}
static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb,
struct dst_entry *dst)
{
struct rtable *rt = (struct rtable *) dst;
return (rt) ? rt_nexthop(rt, ip_hdr(skb)->daddr) : ip_hdr(skb)->daddr;
}
static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb,
struct dst_entry *dst)
{
struct rt6_info *rt = (struct rt6_info *) dst;
if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
return &rt->rt6i_gateway;
else
return &ipv6_hdr(skb)->daddr;
}
static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, __be16 proto)
{
*flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
if ((proto == htons(ETH_P_IP) && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
(proto == htons(ETH_P_IPV6) && 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);
}
extern const struct qeth_discipline qeth_l2_discipline;
extern const struct qeth_discipline qeth_l3_discipline;
extern const struct ethtool_ops qeth_ethtool_ops;
extern const struct attribute_group *qeth_dev_groups[];
const char *qeth_get_cardname_short(struct qeth_card *);
int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count);
int qeth_setup_discipline(struct qeth_card *card, enum qeth_discipline_id disc);
void qeth_remove_discipline(struct qeth_card *card);
/* exports for qeth discipline device drivers */
extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
struct net_device *qeth_clone_netdev(struct net_device *orig);
void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
int clear_start_mask);
int qeth_threads_running(struct qeth_card *, unsigned long);
int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
bool resetting);
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_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);
int qeth_schedule_recovery(struct qeth_card *card);
int qeth_poll(struct napi_struct *napi, int budget);
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 *, unsigned int txqueue);
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 qeth_link_info *link_info);
int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
enum qeth_ipa_isolation_modes mode);
int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq,
void __user *data, int cmd);
__printf(3, 4)
void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
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);
int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count);
u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
u8 cast_type, struct net_device *sb_dev);
u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
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, __be16 proto,
void (*fill_header)(struct qeth_qdio_out_q *queue,
struct qeth_hdr *hdr, struct sk_buff *skb,
__be16 proto, unsigned int data_len));
#endif /* __QETH_CORE_H__ */
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