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-rw-r--r--drivers/target/target_core_pr.c62
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;