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Add support for ORWRITE

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This commit is contained in:
Ronnie Sahlberg
2012-07-14 17:01:38 +10:00
parent bee944c3cc
commit 11f7da678b
7 changed files with 128 additions and 0 deletions
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10
include/iscsi.h
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@@ -656,6 +656,11 @@ iscsi_write16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
int wrprotect, int dpo, int fua, int fua_nv, int group_number,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_orwrite16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_compareandwrite_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number,
@@ -781,6 +786,11 @@ iscsi_write16_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *
iscsi_orwrite16_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *
iscsi_compareandwrite_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,

7
include/scsi-lowlevel.h
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@@ -40,6 +40,7 @@ enum scsi_opcode {
SCSI_OPCODE_READ16 = 0x88,
SCSI_OPCODE_COMPARE_AND_WRITE = 0x89,
SCSI_OPCODE_WRITE16 = 0x8A,
SCSI_OPCODE_ORWRITE16 = 0x8B,
SCSI_OPCODE_WRITE_VERIFY16 = 0x8E,
SCSI_OPCODE_VERIFY16 = 0x8F,
SCSI_OPCODE_PREFETCH16 = 0x90,
@@ -132,6 +133,10 @@ struct scsi_write16_params {
uint64_t lba;
uint32_t num_blocks;
};
struct scsi_orwrite16_params {
uint64_t lba;
uint32_t num_blocks;
};
struct scsi_compareandwrite_params {
uint64_t lba;
uint32_t num_blocks;
@@ -224,6 +229,7 @@ struct scsi_task {
struct scsi_write10_params write10;
struct scsi_write12_params write12;
struct scsi_write16_params write16;
struct scsi_orwrite16_params orwrite16;
struct scsi_compareandwrite_params compareandwrite;
struct scsi_writeverify10_params writeverify10;
struct scsi_writeverify12_params writeverify12;
@@ -656,6 +662,7 @@ EXTERN struct scsi_task *scsi_cdb_read16(uint64_t lba, uint32_t xferlen, int blo
EXTERN struct scsi_task *scsi_cdb_write10(uint32_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *scsi_cdb_write12(uint32_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *scsi_cdb_write16(uint64_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *scsi_cdb_orwrite16(uint64_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *scsi_cdb_compareandwrite(uint64_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *scsi_cdb_writeverify10(uint32_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int bytchk, int group_number);
EXTERN struct scsi_task *scsi_cdb_writeverify12(uint32_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int bytchk, int group_number);

3
lib/libiscsi.def
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@@ -88,6 +88,8 @@ iscsi_write12_sync
iscsi_write12_task
iscsi_write16_sync
iscsi_write16_task
iscsi_orwrite16_sync
iscsi_orwrite16_task
iscsi_compareandwrite_sync
iscsi_compareandwrite_task
iscsi_writeverify10_sync
@@ -122,6 +124,7 @@ scsi_cdb_verify16
scsi_cdb_write10
scsi_cdb_write12
scsi_cdb_write16
scsi_cdb_orwrite16
scsi_cdb_writeverify10
scsi_cdb_writeverify12
scsi_cdb_writeverify16

3
lib/libiscsi.syms
View File

@@ -86,6 +86,8 @@ iscsi_write12_sync
iscsi_write12_task
iscsi_write16_sync
iscsi_write16_task
iscsi_orwrite16_sync
iscsi_orwrite16_task
iscsi_compareandwrite_sync
iscsi_compareandwrite_task
iscsi_writeverify10_sync
@@ -120,6 +122,7 @@ scsi_cdb_verify16
scsi_cdb_write10
scsi_cdb_write12
scsi_cdb_write16
scsi_cdb_orwrite16
scsi_cdb_writeverify10
scsi_cdb_writeverify12
scsi_cdb_writeverify16

35
lib/scsi-command.c
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@@ -870,6 +870,41 @@ iscsi_write16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
return task;
}
struct scsi_task *
iscsi_orwrite16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number,
iscsi_command_cb cb, void *private_data)
{
struct scsi_task *task;
struct iscsi_data outdata;
if (datalen % blocksize != 0) {
iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
"blocksize:%d.", datalen, blocksize);
return NULL;
}
task = scsi_cdb_orwrite16(lba, datalen, blocksize, wrprotect,
dpo, fua, fua_nv, group_number);
if (task == NULL) {
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
"orwrite16 cdb.");
return NULL;
}
outdata.data = data;
outdata.size = datalen;
if (iscsi_scsi_command_async(iscsi, lun, task, cb, &outdata,
private_data) != 0) {
scsi_free_scsi_task(task);
return NULL;
}
return task;
}
struct scsi_task *
iscsi_compareandwrite_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,

47
lib/scsi-lowlevel.c
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@@ -983,6 +983,53 @@ scsi_cdb_write16(uint64_t lba, uint32_t xferlen, int blocksize, int wrprotect, i
return task;
}
/*
* ORWRITE16
*/
struct scsi_task *
scsi_cdb_orwrite16(uint64_t lba, uint32_t xferlen, int blocksize, int wrprotect, int dpo, int fua, int fua_nv, int group_number)
{
struct scsi_task *task;
task = malloc(sizeof(struct scsi_task));
if (task == NULL) {
return NULL;
}
memset(task, 0, sizeof(struct scsi_task));
task->cdb[0] = SCSI_OPCODE_ORWRITE16;
task->cdb[1] |= ((wrprotect & 0x07) << 5);
if (dpo) {
task->cdb[1] |= 0x10;
}
if (fua) {
task->cdb[1] |= 0x08;
}
if (fua_nv) {
task->cdb[1] |= 0x02;
}
*(uint32_t *)&task->cdb[2] = htonl(lba >> 32);
*(uint32_t *)&task->cdb[6] = htonl(lba & 0xffffffff);
*(uint32_t *)&task->cdb[10] = htonl(xferlen/blocksize);
task->cdb[14] |= (group_number & 0x1f);
task->cdb_size = 16;
if (xferlen != 0) {
task->xfer_dir = SCSI_XFER_WRITE;
} else {
task->xfer_dir = SCSI_XFER_NONE;
}
task->expxferlen = xferlen;
task->params.orwrite16.lba = lba;
task->params.orwrite16.num_blocks = xferlen/blocksize;
return task;
}
/*
* COMPAREANDWRITE
*/

23
lib/sync.c
View File

@@ -528,6 +528,29 @@ iscsi_write16_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
return state.task;
}
struct scsi_task *
iscsi_orwrite16_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number)
{
struct iscsi_sync_state state;
memset(&state, 0, sizeof(state));
if (iscsi_orwrite16_task(iscsi, lun, lba,
data, datalen, blocksize, wrprotect,
dpo, fua, fua_nv, group_number,
scsi_sync_cb, &state) == NULL) {
iscsi_set_error(iscsi,
"Failed to send Orwrite16 command");
return NULL;
}
event_loop(iscsi, &state);
return state.task;
}
struct scsi_task *
iscsi_compareandwrite_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,