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target: Fix MAINTENANCE_IN service action CDB checks to use lower 5 bits 

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@suse.de>
Cc: Rob Evers <revers@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2012-05-16 21:52:10 -07:00
parent 66246617ab
commit ba539743b7
2 changed files with 5 additions and 4 deletions
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6
drivers/target/target_core_alua.c
View File

@ -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:

3
drivers/target/target_core_transport.c
View File

@ -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;