diff options
Diffstat (limited to 'drivers/target/target_core_transport.c')
| -rw-r--r-- | drivers/target/target_core_transport.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 607bc3d2bb40..c974e1373c77 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2149,6 +2149,23 @@ transport_generic_new_cmd(struct se_cmd *cmd) cmd->data_length) { bool zero_flag = !(cmd->se_cmd_flags & SCF_SCSI_DATA_CDB); + if ((cmd->se_cmd_flags & SCF_BIDI) || + (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE)) { + u32 bidi_length; + + if (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) + bidi_length = cmd->t_task_nolb * + cmd->se_dev->dev_attrib.block_size; + else + bidi_length = cmd->data_length; + + ret = target_alloc_sgl(&cmd->t_bidi_data_sg, + &cmd->t_bidi_data_nents, + bidi_length, zero_flag); + if (ret < 0) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + } + ret = target_alloc_sgl(&cmd->t_data_sg, &cmd->t_data_nents, cmd->data_length, zero_flag); if (ret < 0) |