118 строки
3.2 KiB
C
118 строки
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Copyright (C) 2019 Samsung Electronics Co., Ltd.
|
|
*/
|
|
|
|
#ifndef __KSMBD_WORK_H__
|
|
#define __KSMBD_WORK_H__
|
|
|
|
#include <linux/ctype.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
struct ksmbd_conn;
|
|
struct ksmbd_session;
|
|
struct ksmbd_tree_connect;
|
|
|
|
enum {
|
|
KSMBD_WORK_ACTIVE = 0,
|
|
KSMBD_WORK_CANCELLED,
|
|
KSMBD_WORK_CLOSED,
|
|
};
|
|
|
|
/* one of these for every pending CIFS request at the connection */
|
|
struct ksmbd_work {
|
|
/* Server corresponding to this mid */
|
|
struct ksmbd_conn *conn;
|
|
struct ksmbd_session *sess;
|
|
struct ksmbd_tree_connect *tcon;
|
|
|
|
/* Pointer to received SMB header */
|
|
void *request_buf;
|
|
/* Response buffer */
|
|
void *response_buf;
|
|
|
|
/* Read data buffer */
|
|
void *aux_payload_buf;
|
|
|
|
/* Next cmd hdr in compound req buf*/
|
|
int next_smb2_rcv_hdr_off;
|
|
/* Next cmd hdr in compound rsp buf*/
|
|
int next_smb2_rsp_hdr_off;
|
|
|
|
/*
|
|
* Current Local FID assigned compound response if SMB2 CREATE
|
|
* command is present in compound request
|
|
*/
|
|
u64 compound_fid;
|
|
u64 compound_pfid;
|
|
u64 compound_sid;
|
|
|
|
const struct cred *saved_cred;
|
|
|
|
/* Number of granted credits */
|
|
unsigned int credits_granted;
|
|
|
|
/* response smb header size */
|
|
unsigned int resp_hdr_sz;
|
|
unsigned int response_sz;
|
|
/* Read data count */
|
|
unsigned int aux_payload_sz;
|
|
|
|
void *tr_buf;
|
|
|
|
unsigned char state;
|
|
/* Multiple responses for one request e.g. SMB ECHO */
|
|
bool multiRsp:1;
|
|
/* No response for cancelled request */
|
|
bool send_no_response:1;
|
|
/* Request is encrypted */
|
|
bool encrypted:1;
|
|
/* Is this SYNC or ASYNC ksmbd_work */
|
|
bool asynchronous:1;
|
|
bool need_invalidate_rkey:1;
|
|
|
|
unsigned int remote_key;
|
|
/* cancel works */
|
|
int async_id;
|
|
void **cancel_argv;
|
|
void (*cancel_fn)(void **argv);
|
|
|
|
struct work_struct work;
|
|
/* List head at conn->requests */
|
|
struct list_head request_entry;
|
|
/* List head at conn->async_requests */
|
|
struct list_head async_request_entry;
|
|
struct list_head fp_entry;
|
|
struct list_head interim_entry;
|
|
};
|
|
|
|
/**
|
|
* ksmbd_resp_buf_next - Get next buffer on compound response.
|
|
* @work: smb work containing response buffer
|
|
*/
|
|
static inline void *ksmbd_resp_buf_next(struct ksmbd_work *work)
|
|
{
|
|
return work->response_buf + work->next_smb2_rsp_hdr_off + 4;
|
|
}
|
|
|
|
/**
|
|
* ksmbd_req_buf_next - Get next buffer on compound request.
|
|
* @work: smb work containing response buffer
|
|
*/
|
|
static inline void *ksmbd_req_buf_next(struct ksmbd_work *work)
|
|
{
|
|
return work->request_buf + work->next_smb2_rcv_hdr_off + 4;
|
|
}
|
|
|
|
struct ksmbd_work *ksmbd_alloc_work_struct(void);
|
|
void ksmbd_free_work_struct(struct ksmbd_work *work);
|
|
|
|
void ksmbd_work_pool_destroy(void);
|
|
int ksmbd_work_pool_init(void);
|
|
|
|
int ksmbd_workqueue_init(void);
|
|
void ksmbd_workqueue_destroy(void);
|
|
bool ksmbd_queue_work(struct ksmbd_work *work);
|
|
|
|
#endif /* __KSMBD_WORK_H__ */
|