1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* SPDX-License-Identifier: GPL-2.0 */
#include <target/target_core_base.h>
#define XCOPY_HDR_LEN 16
#define XCOPY_TARGET_DESC_LEN 32
#define XCOPY_SEGMENT_DESC_LEN 28
#define XCOPY_NAA_IEEE_REGEX_LEN 16
#define XCOPY_MAX_SECTORS 1024
/*
* SPC4r37 6.4.6.1
* Table 150 — CSCD descriptor ID values
*/
#define XCOPY_CSCD_DESC_ID_LIST_OFF_MAX 0x07FF
enum xcopy_origin_list {
XCOL_SOURCE_RECV_OP = 0x01,
XCOL_DEST_RECV_OP = 0x02,
};
struct xcopy_pt_cmd;
struct xcopy_op {
int op_origin;
struct se_cmd *xop_se_cmd;
struct se_device *src_dev;
unsigned char src_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
struct se_device *dst_dev;
unsigned char dst_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
unsigned char local_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
struct percpu_ref *remote_lun_ref;
sector_t src_lba;
sector_t dst_lba;
unsigned short stdi;
unsigned short dtdi;
unsigned short nolb;
unsigned int dbl;
struct xcopy_pt_cmd *src_pt_cmd;
struct xcopy_pt_cmd *dst_pt_cmd;
u32 xop_data_nents;
struct scatterlist *xop_data_sg;
struct work_struct xop_work;
};
/*
* Receive Copy Results Sevice Actions
*/
#define RCR_SA_COPY_STATUS 0x00
#define RCR_SA_RECEIVE_DATA 0x01
#define RCR_SA_OPERATING_PARAMETERS 0x03
#define RCR_SA_FAILED_SEGMENT_DETAILS 0x04
/*
* Receive Copy Results defs for Operating Parameters
*/
#define RCR_OP_MAX_TARGET_DESC_COUNT 0x2
#define RCR_OP_MAX_SG_DESC_COUNT 0x1
#define RCR_OP_MAX_DESC_LIST_LEN 1024
#define RCR_OP_MAX_SEGMENT_LEN 268435456 /* 256 MB */
#define RCR_OP_TOTAL_CONCURR_COPIES 0x1 /* Must be <= 16384 */
#define RCR_OP_MAX_CONCURR_COPIES 0x1 /* Must be <= 255 */
#define RCR_OP_DATA_SEG_GRAN_LOG2 9 /* 512 bytes in log 2 */
#define RCR_OP_INLINE_DATA_GRAN_LOG2 9 /* 512 bytes in log 2 */
#define RCR_OP_HELD_DATA_GRAN_LOG2 9 /* 512 bytes in log 2 */
extern int target_xcopy_setup_pt(void);
extern void target_xcopy_release_pt(void);
extern sense_reason_t target_do_xcopy(struct se_cmd *);
extern sense_reason_t target_do_receive_copy_results(struct se_cmd *);
|
