diff options
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_pr.c | 62 |
1 files changed, 61 insertions, 1 deletions
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 1493b1d01194..e16ef7d676af 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -3538,6 +3538,25 @@ out_put_pr_reg: return ret; } +static sense_reason_t +target_try_pr_out_pt(struct se_cmd *cmd, u8 sa, u64 res_key, u64 sa_res_key, + u8 type, bool aptpl, bool all_tg_pt, bool spec_i_pt) +{ + struct exec_cmd_ops *ops = cmd->protocol_data; + + if (!cmd->se_sess || !cmd->se_lun) { + pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + } + + if (!ops->execute_pr_out) { + pr_err("SPC-3 PR: Device has been configured for PR passthrough but it's not supported by the backend.\n"); + return TCM_UNSUPPORTED_SCSI_OPCODE; + } + + return ops->execute_pr_out(cmd, sa, res_key, sa_res_key, type, aptpl); +} + /* * See spc4r17 section 6.14 Table 170 */ @@ -3641,6 +3660,12 @@ target_scsi3_emulate_pr_out(struct se_cmd *cmd) return TCM_PARAMETER_LIST_LENGTH_ERROR; } + if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) { + ret = target_try_pr_out_pt(cmd, sa, res_key, sa_res_key, type, + aptpl, all_tg_pt, spec_i_pt); + goto done; + } + /* * (core_scsi3_emulate_pro_* function parameters * are defined by spc4r17 Table 174: @@ -3682,6 +3707,7 @@ target_scsi3_emulate_pr_out(struct se_cmd *cmd) return TCM_INVALID_CDB_FIELD; } +done: if (!ret) target_complete_cmd(cmd, SAM_STAT_GOOD); return ret; @@ -4039,9 +4065,37 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd) return 0; } +static sense_reason_t target_try_pr_in_pt(struct se_cmd *cmd, u8 sa) +{ + struct exec_cmd_ops *ops = cmd->protocol_data; + unsigned char *buf; + sense_reason_t ret; + + if (cmd->data_length < 8) { + pr_err("PRIN SA SCSI Data Length: %u too small\n", + cmd->data_length); + return TCM_INVALID_CDB_FIELD; + } + + if (!ops->execute_pr_in) { + pr_err("SPC-3 PR: Device has been configured for PR passthrough but it's not supported by the backend.\n"); + return TCM_UNSUPPORTED_SCSI_OPCODE; + } + + buf = transport_kmap_data_sg(cmd); + if (!buf) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + + ret = ops->execute_pr_in(cmd, sa, buf); + + transport_kunmap_data_sg(cmd); + return ret; +} + sense_reason_t target_scsi3_emulate_pr_in(struct se_cmd *cmd) { + u8 sa = cmd->t_task_cdb[1] & 0x1f; sense_reason_t ret; /* @@ -4060,7 +4114,12 @@ target_scsi3_emulate_pr_in(struct se_cmd *cmd) return TCM_RESERVATION_CONFLICT; } - switch (cmd->t_task_cdb[1] & 0x1f) { + if (cmd->se_dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) { + ret = target_try_pr_in_pt(cmd, sa); + goto done; + } + + switch (sa) { case PRI_READ_KEYS: ret = core_scsi3_pri_read_keys(cmd); break; @@ -4079,6 +4138,7 @@ target_scsi3_emulate_pr_in(struct se_cmd *cmd) return TCM_INVALID_CDB_FIELD; } +done: if (!ret) target_complete_cmd(cmd, SAM_STAT_GOOD); return ret; |