From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
This patch fixes the MAINTENANCE_IN service action type checks to only
look at the proper lower 5 bits of cdb byte 1. This addresses the case
where MI_REPORT_TARGET_PGS w/ extended header using the upper three bits of
cdb byte 1 was not processed correctly in transport_generic_cmd_sequencer,
as well as the three cases for standby, unavailable, and transition ALUA
primary access state checks.
Also add MAINTENANCE_IN to the excluded list in transport_generic_prepare_cdb()
to prevent the PARAMETER DATA FORMAT bits from being cleared.
Cc: Hannes Reinecke <hare@xxxxxxx>
Cc: Rob Evers <revers@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Roland Dreier <roland@xxxxxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
---
drivers/target/target_core_alua.c | 6 +++---
drivers/target/target_core_transport.c | 3 ++-
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index c39ae7c..be7251e 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -387,7 +387,7 @@ static inline int core_alua_state_standby(
case RECEIVE_DIAGNOSTIC:
case SEND_DIAGNOSTIC:
case MAINTENANCE_IN:
- switch (cdb[1]) {
+ switch (cdb[1] & 0x1f) {
case MI_REPORT_TARGET_PGS:
return 0;
default:
@@ -429,7 +429,7 @@ static inline int core_alua_state_unavailable(
case INQUIRY:
case REPORT_LUNS:
case MAINTENANCE_IN:
- switch (cdb[1]) {
+ switch (cdb[1] & 0x1f) {
case MI_REPORT_TARGET_PGS:
return 0;
default:
@@ -469,7 +469,7 @@ static inline int core_alua_state_transition(
case INQUIRY:
case REPORT_LUNS:
case MAINTENANCE_IN:
- switch (cdb[1]) {
+ switch (cdb[1] & 0x1f) {
case MI_REPORT_TARGET_PGS:
return 0;
default:
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 2d75c29..0590dc6 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1329,6 +1329,7 @@ static inline void transport_generic_prepare_cdb(
case VERIFY_16: /* SBC - VRProtect */
case WRITE_VERIFY: /* SBC - VRProtect */
case WRITE_VERIFY_12: /* SBC - VRProtect */
+ case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */
break;
default:
cdb[1] &= 0x1f; /* clear logical unit number */
@@ -2597,7 +2598,7 @@ static int transport_generic_cmd_sequencer(
/*
* Check for emulated MI_REPORT_TARGET_PGS.
*/
- if (cdb[1] == MI_REPORT_TARGET_PGS &&
+ if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS &&
su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
cmd->execute_cmd =
target_emulate_report_target_port_groups;
--
1.7.2.5
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