Libiscsi: Introducing new functions for zero-copy write operations
iscsi-command: Adding new functions for all write operations (WRITE10,
WRITE12, WRITE16, WRITEOR, etc') for cases where the user wants
to pass his own io vectors (prevent memcpy).
new functions are called iscsi_write*_iov_task and looks
very similar to the iscsi_write*_task, only they get
scsi_iovec pointer and number of scsi_iovec as
parameters.
Change-Id: I719552b4cbda4f937975b5df7e77b4844e48cd16
Signed-off-by: Roy Shterman <roysh@mellanox.com>
This commit is contained in:
Roy Shterman
committed by
Ronnie Sahlberg
Ronnie Sahlberg
parent
2bba53d31d
commit
c85042bacb
@@ -1022,6 +1022,44 @@ iscsi_write10_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_write10_iov_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int fua, int fua_nv, int group_number,
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iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_write10(lba, datalen, blocksize, wrprotect,
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dpo, fua, fua_nv, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"write10 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_write12_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1056,6 +1094,43 @@ iscsi_write12_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_write12_iov_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int fua, int fua_nv, int group_number,
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iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_write12(lba, datalen, blocksize, wrprotect,
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dpo, fua, fua_nv, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"write12 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_write16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1090,6 +1165,43 @@ iscsi_write16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_write16_iov_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int fua, int fua_nv, int group_number,
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iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_write16(lba, datalen, blocksize, wrprotect,
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dpo, fua, fua_nv, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"write16 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_writeatomic16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1124,6 +1236,44 @@ iscsi_writeatomic16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_writeatomic16_iov_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int fua, int group_number,
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iscsi_command_cb cb, void *private_data,
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struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_writeatomic16(lba, datalen, blocksize, wrprotect,
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dpo, fua, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"writeAtomic16 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_orwrite_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1158,6 +1308,43 @@ iscsi_orwrite_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_orwrite_iov_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int fua, int fua_nv, int group_number,
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iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_orwrite(lba, datalen, blocksize, wrprotect,
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dpo, fua, fua_nv, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"orwrite cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_compareandwrite_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1192,6 +1379,43 @@ iscsi_compareandwrite_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_compareandwrite_iov_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int fua, int fua_nv, int group_number,
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iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % (blocksize * 2) != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize * 2:%d.", datalen, blocksize * 2);
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return NULL;
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}
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task = scsi_cdb_compareandwrite(lba, datalen, blocksize, wrprotect,
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dpo, fua, fua_nv, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"compareandwrite cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_writeverify10_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1226,6 +1450,44 @@ iscsi_writeverify10_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_writeverify10_iov_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int bytchk, int group_number,
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iscsi_command_cb cb, void *private_data,
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struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_writeverify10(lba, datalen, blocksize, wrprotect,
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dpo, bytchk, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"writeverify10 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_writeverify12_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1260,6 +1522,44 @@ iscsi_writeverify12_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_writeverify12_iov_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int bytchk, int group_number,
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iscsi_command_cb cb, void *private_data,
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struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_writeverify12(lba, datalen, blocksize, wrprotect,
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dpo, bytchk, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"writeverify12 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_writeverify16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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@@ -1294,6 +1594,44 @@ iscsi_writeverify16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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return task;
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}
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struct scsi_task *
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iscsi_writeverify16_iov_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
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unsigned char *data, uint32_t datalen, int blocksize,
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int wrprotect, int dpo, int bytchk, int group_number,
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iscsi_command_cb cb, void *private_data,
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struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_writeverify16(lba, datalen, blocksize, wrprotect,
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dpo, bytchk, group_number);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"writeverify16 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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if (iov != NULL)
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scsi_task_set_iov_out(task, iov, niov);
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if (iscsi_scsi_command_async(iscsi, lun, task, cb,
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&d, private_data) != 0) {
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scsi_free_scsi_task(task);
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return NULL;
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}
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return task;
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}
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struct scsi_task *
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iscsi_verify10_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
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uint32_t datalen, uint32_t lba, int vprotect, int dpo, int bytchk, int blocksize,
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@@ -1326,6 +1664,41 @@ iscsi_verify10_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
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return task;
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}
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struct scsi_task *
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iscsi_verify10_iov_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
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uint32_t datalen, uint32_t lba, int vprotect, int dpo, int bytchk, int blocksize,
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iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
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{
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struct scsi_task *task;
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struct iscsi_data d;
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if (datalen % blocksize != 0) {
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iscsi_set_error(iscsi, "Datalen:%d is not a multiple of the "
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"blocksize:%d.", datalen, blocksize);
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return NULL;
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}
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task = scsi_cdb_verify10(lba, datalen, vprotect, dpo, bytchk, blocksize);
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if (task == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
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"verify10 cdb.");
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return NULL;
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}
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d.data = data;
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d.size = datalen;
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|
||||
if (iov != NULL)
|
||||
scsi_task_set_iov_out(task, iov, niov);
|
||||
|
||||
if (iscsi_scsi_command_async(iscsi, lun, task, cb,
|
||||
&d, private_data) != 0) {
|
||||
scsi_free_scsi_task(task);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_verify12_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
|
||||
uint32_t datalen, uint32_t lba, int vprotect, int dpo, int bytchk, int blocksize,
|
||||
@@ -1358,6 +1731,41 @@ iscsi_verify12_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_verify12_iov_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
|
||||
uint32_t datalen, uint32_t lba, int vprotect, int dpo, int bytchk, int blocksize,
|
||||
iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
|
||||
{
|
||||
struct scsi_task *task;
|
||||
struct iscsi_data d;
|
||||
|
||||
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_verify12(lba, datalen, vprotect, dpo, bytchk, blocksize);
|
||||
if (task == NULL) {
|
||||
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
|
||||
"verify12 cdb.");
|
||||
return NULL;
|
||||
}
|
||||
d.data = data;
|
||||
d.size = datalen;
|
||||
|
||||
if (iov != NULL)
|
||||
scsi_task_set_iov_out(task, iov, niov);
|
||||
|
||||
if (iscsi_scsi_command_async(iscsi, lun, task, cb,
|
||||
&d, private_data) != 0) {
|
||||
scsi_free_scsi_task(task);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_verify16_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
|
||||
uint32_t datalen, uint64_t lba, int vprotect, int dpo, int bytchk, int blocksize,
|
||||
@@ -1390,6 +1798,41 @@ iscsi_verify16_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_verify16_iov_task(struct iscsi_context *iscsi, int lun, unsigned char *data,
|
||||
uint32_t datalen, uint64_t lba, int vprotect, int dpo, int bytchk, int blocksize,
|
||||
iscsi_command_cb cb, void *private_data, struct scsi_iovec *iov, int niov)
|
||||
{
|
||||
struct scsi_task *task;
|
||||
struct iscsi_data d;
|
||||
|
||||
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_verify16(lba, datalen, vprotect, dpo, bytchk, blocksize);
|
||||
if (task == NULL) {
|
||||
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
|
||||
"verify16 cdb.");
|
||||
return NULL;
|
||||
}
|
||||
d.data = data;
|
||||
d.size = datalen;
|
||||
|
||||
if (iov != NULL)
|
||||
scsi_task_set_iov_out(task, iov, niov);
|
||||
|
||||
if (iscsi_scsi_command_async(iscsi, lun, task, cb,
|
||||
&d, private_data) != 0) {
|
||||
scsi_free_scsi_task(task);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_modeselect6_task(struct iscsi_context *iscsi, int lun,
|
||||
int pf, int sp, struct scsi_mode_page *mp,
|
||||
@@ -1729,6 +2172,44 @@ iscsi_writesame10_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_writesame10_iov_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
|
||||
unsigned char *data, uint32_t datalen,
|
||||
uint16_t num_blocks,
|
||||
int anchor, int unmap, int wrprotect, int group,
|
||||
iscsi_command_cb cb, void *private_data,
|
||||
struct scsi_iovec *iov, int niov)
|
||||
{
|
||||
struct scsi_task *task;
|
||||
struct iscsi_data d;
|
||||
|
||||
task = scsi_cdb_writesame10(wrprotect, anchor, unmap, lba, group,
|
||||
num_blocks, datalen);
|
||||
if (task == NULL) {
|
||||
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
|
||||
"writesame10 cdb.");
|
||||
return NULL;
|
||||
}
|
||||
d.data = data;
|
||||
d.size = datalen;
|
||||
|
||||
if (iov != NULL)
|
||||
scsi_task_set_iov_out(task, iov, niov);
|
||||
|
||||
if (data != NULL) {
|
||||
task->expxferlen = datalen;
|
||||
} else {
|
||||
task->expxferlen = 0;
|
||||
task->xfer_dir = SCSI_XFER_NONE;
|
||||
}
|
||||
if (iscsi_scsi_command_async(iscsi, lun, task, cb,
|
||||
&d, private_data) != 0) {
|
||||
scsi_free_scsi_task(task);
|
||||
return NULL;
|
||||
}
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_writesame16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
|
||||
unsigned char *data, uint32_t datalen,
|
||||
@@ -1765,6 +2246,46 @@ iscsi_writesame16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_writesame16_iov_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
|
||||
unsigned char *data, uint32_t datalen,
|
||||
uint32_t num_blocks,
|
||||
int anchor, int unmap, int wrprotect, int group,
|
||||
iscsi_command_cb cb, void *private_data,
|
||||
struct scsi_iovec *iov, int niov)
|
||||
{
|
||||
struct scsi_task *task;
|
||||
struct iscsi_data d;
|
||||
|
||||
task = scsi_cdb_writesame16(wrprotect, anchor, unmap, lba, group,
|
||||
num_blocks, datalen);
|
||||
if (task == NULL) {
|
||||
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
|
||||
"writesame16 cdb.");
|
||||
return NULL;
|
||||
}
|
||||
d.data = data;
|
||||
d.size = datalen;
|
||||
|
||||
if (iov != NULL)
|
||||
scsi_task_set_iov_out(task, iov, niov);
|
||||
|
||||
if (data != NULL) {
|
||||
task->expxferlen = datalen;
|
||||
} else {
|
||||
task->expxferlen = 0;
|
||||
task->xfer_dir = SCSI_XFER_NONE;
|
||||
}
|
||||
|
||||
if (iscsi_scsi_command_async(iscsi, lun, task, cb,
|
||||
&d, private_data) != 0) {
|
||||
scsi_free_scsi_task(task);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return task;
|
||||
}
|
||||
|
||||
struct scsi_task *
|
||||
iscsi_unmap_task(struct iscsi_context *iscsi, int lun, int anchor, int group,
|
||||
struct unmap_list *list, int list_len,
|
||||
|
||||
Reference in New Issue
Block a user