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path: root/drivers/target/target_core_spc.c
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Diffstat (limited to 'drivers/target/target_core_spc.c')
-rw-r--r--drivers/target/target_core_spc.c113
1 files changed, 79 insertions, 34 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 89c0d56294cc..50290abc07bc 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -1424,9 +1424,10 @@ static struct target_opcode_descriptor tcm_opcode_write_verify16 = {
.update_usage_bits = set_dpofua_usage_bits,
};
-static bool tcm_is_ws_enabled(struct se_cmd *cmd)
+static bool tcm_is_ws_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
- struct sbc_ops *ops = cmd->protocol_data;
+ struct exec_cmd_ops *ops = cmd->protocol_data;
struct se_device *dev = cmd->se_dev;
return (dev->dev_attrib.emulate_tpws && !!ops->execute_unmap) ||
@@ -1451,7 +1452,8 @@ static struct target_opcode_descriptor tcm_opcode_write_same32 = {
.update_usage_bits = set_dpofua_usage_bits32,
};
-static bool tcm_is_caw_enabled(struct se_cmd *cmd)
+static bool tcm_is_caw_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
@@ -1491,7 +1493,8 @@ static struct target_opcode_descriptor tcm_opcode_read_capacity16 = {
0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
};
-static bool tcm_is_rep_ref_enabled(struct se_cmd *cmd)
+static bool tcm_is_rep_ref_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
@@ -1502,7 +1505,6 @@ static bool tcm_is_rep_ref_enabled(struct se_cmd *cmd)
}
spin_unlock(&dev->t10_alua.lba_map_lock);
return true;
-
}
static struct target_opcode_descriptor tcm_opcode_read_report_refferals = {
@@ -1537,9 +1539,10 @@ static struct target_opcode_descriptor tcm_opcode_sync_cache16 = {
0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK},
};
-static bool tcm_is_unmap_enabled(struct se_cmd *cmd)
+static bool tcm_is_unmap_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
- struct sbc_ops *ops = cmd->protocol_data;
+ struct exec_cmd_ops *ops = cmd->protocol_data;
struct se_device *dev = cmd->se_dev;
return ops->execute_unmap && dev->dev_attrib.emulate_tpu;
@@ -1659,11 +1662,46 @@ static struct target_opcode_descriptor tcm_opcode_pri_read_resrv = {
0xff, SCSI_CONTROL_MASK},
};
-static bool tcm_is_pr_enabled(struct se_cmd *cmd)
+static bool tcm_is_pr_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
- return dev->dev_attrib.emulate_pr;
+ if (!dev->dev_attrib.emulate_pr)
+ return false;
+
+ if (!(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR))
+ return true;
+
+ switch (descr->opcode) {
+ case RESERVE:
+ case RESERVE_10:
+ case RELEASE:
+ case RELEASE_10:
+ /*
+ * The pr_ops which are used by the backend modules don't
+ * support these commands.
+ */
+ return false;
+ case PERSISTENT_RESERVE_OUT:
+ switch (descr->service_action) {
+ case PRO_REGISTER_AND_MOVE:
+ case PRO_REPLACE_LOST_RESERVATION:
+ /*
+ * The backend modules don't have access to ports and
+ * I_T nexuses so they can't handle these type of
+ * requests.
+ */
+ return false;
+ }
+ break;
+ case PERSISTENT_RESERVE_IN:
+ if (descr->service_action == PRI_READ_FULL_STATUS)
+ return false;
+ break;
+ }
+
+ return true;
}
static struct target_opcode_descriptor tcm_opcode_pri_read_caps = {
@@ -1788,20 +1826,13 @@ static struct target_opcode_descriptor tcm_opcode_pro_register_move = {
.enabled = tcm_is_pr_enabled,
};
-static bool tcm_is_scsi2_reservations_enabled(struct se_cmd *cmd)
-{
- struct se_device *dev = cmd->se_dev;
-
- return dev->dev_attrib.emulate_pr;
-}
-
static struct target_opcode_descriptor tcm_opcode_release = {
.support = SCSI_SUPPORT_FULL,
.opcode = RELEASE,
.cdb_size = 6,
.usage_bits = {RELEASE, 0x00, 0x00, 0x00,
0x00, SCSI_CONTROL_MASK},
- .enabled = tcm_is_scsi2_reservations_enabled,
+ .enabled = tcm_is_pr_enabled,
};
static struct target_opcode_descriptor tcm_opcode_release10 = {
@@ -1811,7 +1842,7 @@ static struct target_opcode_descriptor tcm_opcode_release10 = {
.usage_bits = {RELEASE_10, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xff,
0xff, SCSI_CONTROL_MASK},
- .enabled = tcm_is_scsi2_reservations_enabled,
+ .enabled = tcm_is_pr_enabled,
};
static struct target_opcode_descriptor tcm_opcode_reserve = {
@@ -1820,7 +1851,7 @@ static struct target_opcode_descriptor tcm_opcode_reserve = {
.cdb_size = 6,
.usage_bits = {RESERVE, 0x00, 0x00, 0x00,
0x00, SCSI_CONTROL_MASK},
- .enabled = tcm_is_scsi2_reservations_enabled,
+ .enabled = tcm_is_pr_enabled,
};
static struct target_opcode_descriptor tcm_opcode_reserve10 = {
@@ -1830,7 +1861,7 @@ static struct target_opcode_descriptor tcm_opcode_reserve10 = {
.usage_bits = {RESERVE_10, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xff,
0xff, SCSI_CONTROL_MASK},
- .enabled = tcm_is_scsi2_reservations_enabled,
+ .enabled = tcm_is_pr_enabled,
};
static struct target_opcode_descriptor tcm_opcode_request_sense = {
@@ -1849,7 +1880,8 @@ static struct target_opcode_descriptor tcm_opcode_inquiry = {
0xff, SCSI_CONTROL_MASK},
};
-static bool tcm_is_3pc_enabled(struct se_cmd *cmd)
+static bool tcm_is_3pc_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
@@ -1910,8 +1942,8 @@ static struct target_opcode_descriptor tcm_opcode_report_target_pgs = {
0xff, 0xff, 0x00, SCSI_CONTROL_MASK},
};
-
-static bool spc_rsoc_enabled(struct se_cmd *cmd)
+static bool spc_rsoc_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
@@ -1931,7 +1963,8 @@ static struct target_opcode_descriptor tcm_opcode_report_supp_opcodes = {
.enabled = spc_rsoc_enabled,
};
-static bool tcm_is_set_tpg_enabled(struct se_cmd *cmd)
+static bool tcm_is_set_tpg_enabled(struct target_opcode_descriptor *descr,
+ struct se_cmd *cmd)
{
struct t10_alua_tg_pt_gp *l_tg_pt_gp;
struct se_lun *l_lun = cmd->se_lun;
@@ -2118,7 +2151,7 @@ spc_rsoc_get_descr(struct se_cmd *cmd, struct target_opcode_descriptor **opcode)
if (descr->serv_action_valid)
return TCM_INVALID_CDB_FIELD;
- if (!descr->enabled || descr->enabled(cmd))
+ if (!descr->enabled || descr->enabled(descr, cmd))
*opcode = descr;
break;
case 0x2:
@@ -2132,7 +2165,8 @@ spc_rsoc_get_descr(struct se_cmd *cmd, struct target_opcode_descriptor **opcode)
*/
if (descr->serv_action_valid &&
descr->service_action == requested_sa) {
- if (!descr->enabled || descr->enabled(cmd))
+ if (!descr->enabled || descr->enabled(descr,
+ cmd))
*opcode = descr;
} else if (!descr->serv_action_valid)
return TCM_INVALID_CDB_FIELD;
@@ -2145,7 +2179,8 @@ spc_rsoc_get_descr(struct se_cmd *cmd, struct target_opcode_descriptor **opcode)
* be returned in the one_command parameter data format.
*/
if (descr->service_action == requested_sa)
- if (!descr->enabled || descr->enabled(cmd))
+ if (!descr->enabled || descr->enabled(descr,
+ cmd))
*opcode = descr;
break;
}
@@ -2202,7 +2237,7 @@ spc_emulate_report_supp_op_codes(struct se_cmd *cmd)
for (i = 0; i < ARRAY_SIZE(tcm_supported_opcodes); i++) {
descr = tcm_supported_opcodes[i];
- if (descr->enabled && !descr->enabled(cmd))
+ if (descr->enabled && !descr->enabled(descr, cmd))
continue;
response_length += spc_rsoc_encode_command_descriptor(
@@ -2231,12 +2266,22 @@ spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
struct se_device *dev = cmd->se_dev;
unsigned char *cdb = cmd->t_task_cdb;
- if (!dev->dev_attrib.emulate_pr &&
- ((cdb[0] == PERSISTENT_RESERVE_IN) ||
- (cdb[0] == PERSISTENT_RESERVE_OUT) ||
- (cdb[0] == RELEASE || cdb[0] == RELEASE_10) ||
- (cdb[0] == RESERVE || cdb[0] == RESERVE_10))) {
- return TCM_UNSUPPORTED_SCSI_OPCODE;
+ switch (cdb[0]) {
+ case RESERVE:
+ case RESERVE_10:
+ case RELEASE:
+ case RELEASE_10:
+ if (!dev->dev_attrib.emulate_pr)
+ return TCM_UNSUPPORTED_SCSI_OPCODE;
+
+ if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)
+ return TCM_UNSUPPORTED_SCSI_OPCODE;
+ break;
+ case PERSISTENT_RESERVE_IN:
+ case PERSISTENT_RESERVE_OUT:
+ if (!dev->dev_attrib.emulate_pr)
+ return TCM_UNSUPPORTED_SCSI_OPCODE;
+ break;
}
switch (cdb[0]) {
generated by cgit (git 2.34.1) at 2024-05-29 16:54:04 +0000