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target: add helper to copy sense to se_cmd buffer 

This adds a helper to copy sense from backend module buffer to
the se_cmd's sense buffer.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
hifive-unleashed-5.1
Mike Christie 2017-05-31 15:52:39 -05:00 committed by Nicholas Bellinger
parent 9fe3698450
commit c6d66aba98
2 changed files with 20 additions and 0 deletions
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18
drivers/target/target_core_transport.c
View File

@ -704,6 +704,24 @@ static unsigned char *transport_get_sense_buffer(struct se_cmd *cmd)
return cmd->sense_buffer;
}
void transport_copy_sense_to_cmd(struct se_cmd *cmd, unsigned char *sense)
{
unsigned char *cmd_sense_buf;
unsigned long flags;
spin_lock_irqsave(&cmd->t_state_lock, flags);
cmd_sense_buf = transport_get_sense_buffer(cmd);
if (!cmd_sense_buf) {
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
return;
}
cmd->se_cmd_flags |= SCF_TRANSPORT_TASK_SENSE;
memcpy(cmd_sense_buf, sense, cmd->scsi_sense_length);
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
}
EXPORT_SYMBOL(transport_copy_sense_to_cmd);
void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
{
struct se_device *dev = cmd->se_dev;

2
include/target/target_core_backend.h
View File

@ -73,6 +73,8 @@ void target_backend_unregister(const struct target_backend_ops *);
void target_complete_cmd(struct se_cmd *, u8);
void target_complete_cmd_with_length(struct se_cmd *, u8, int);
void transport_copy_sense_to_cmd(struct se_cmd *, unsigned char *);
sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *);