zfcp_qdio Struct Reference

#include <zfcp_qdio.h>

Data Fields
struct qdio_buffer *	res_q [QDIO_MAX_BUFFERS_PER_Q]
struct qdio_buffer *	req_q [QDIO_MAX_BUFFERS_PER_Q]
u8	req_q_idx
atomic_t	req_q_free
spinlock_t	stat_lock
spinlock_t	req_q_lock
unsigned long long	req_q_time
u64	req_q_util
atomic_t	req_q_full
wait_queue_head_t	req_q_wq
struct zfcp_adapter *	adapter
u16	max_sbale_per_sbal
u16	max_sbale_per_req

Detailed Description

struct zfcp_qdio - basic qdio data structure : response queue : request queue : index of next free buffer : number of free buffers in queue : lock to protect req_q_util and req_q_time : lock to serialize access to request queue : time of last fill level change : used for accounting : queue full incidents : used to wait for SBAL availability : adapter used in conjunction with this qdio structure

Definition at line 33 of file zfcp_qdio.h.

Field Documentation

struct zfcp_adapter* adapter

Definition at line 44 of file zfcp_qdio.h.

u16 max_sbale_per_req

Definition at line 46 of file zfcp_qdio.h.

u16 max_sbale_per_sbal

Definition at line 45 of file zfcp_qdio.h.

struct qdio_buffer* req_q[QDIO_MAX_BUFFERS_PER_Q]

Definition at line 35 of file zfcp_qdio.h.

atomic_t req_q_free

Definition at line 37 of file zfcp_qdio.h.

atomic_t req_q_full

Definition at line 42 of file zfcp_qdio.h.

u8 req_q_idx

Definition at line 36 of file zfcp_qdio.h.

spinlock_t req_q_lock

Definition at line 39 of file zfcp_qdio.h.

unsigned long long req_q_time

Definition at line 40 of file zfcp_qdio.h.

u64 req_q_util

Definition at line 41 of file zfcp_qdio.h.

wait_queue_head_t req_q_wq

Definition at line 43 of file zfcp_qdio.h.

struct qdio_buffer* res_q[QDIO_MAX_BUFFERS_PER_Q]

Definition at line 34 of file zfcp_qdio.h.

spinlock_t stat_lock

Definition at line 38 of file zfcp_qdio.h.

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The documentation for this struct was generated from the following file:

• drivers/s390/scsi/zfcp_qdio.h