diff options
Diffstat (limited to 'drivers/target/target_core_transport.c')
| -rw-r--r-- | drivers/target/target_core_transport.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 7f06a62f8661..652ef1c9a9f6 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1243,6 +1243,19 @@ target_check_max_data_sg_nents(struct se_cmd *cmd, struct se_device *dev, return TCM_NO_SENSE; } +/** + * target_cmd_size_check - Check whether there will be a residual. + * @cmd: SCSI command. + * @size: Data buffer size derived from CDB. The data buffer size provided by + * the SCSI transport driver is available in @cmd->data_length. + * + * Compare the data buffer size from the CDB with the data buffer limit from the transport + * header. Set @cmd->residual_count and SCF_OVERFLOW_BIT or SCF_UNDERFLOW_BIT if necessary. + * + * Note: target drivers set @cmd->data_length by calling transport_init_se_cmd(). + * + * Return: TCM_NO_SENSE + */ sense_reason_t target_cmd_size_check(struct se_cmd *cmd, unsigned int size) { |