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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-05-17 08:52:10 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-11 23:04:20 +0400 |
| commit | 4ff5fd702a5d62a39a9d72ba58003e990a099a08 (patch) | |
| tree | c0c5cf4ff8239ae43877191f57348deb1a3a8b19 /drivers | |
| parent | 422c451501b6276c8ad4bea5ac6bf85322592d1e (diff) | |
| download | linux-4ff5fd702a5d62a39a9d72ba58003e990a099a08.tar.xz | |
target: Fix MAINTENANCE_IN service action CDB checks to use lower 5 bits
commit ba539743b70cd160c84bab1c82910d0789b820f8 upstream.
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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Rui Xiang <rui.xiang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/target/target_core_alua.c | 6 | ||||
| -rw-r--r-- | 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 aa3c1062157a..b10f585cd11a 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -394,7 +394,7 @@ static inline int core_alua_state_standby( case SEND_DIAGNOSTIC: return 0; case MAINTENANCE_IN: - switch (cdb[1]) { + switch (cdb[1] & 0x1f) { case MI_REPORT_TARGET_PGS: return 0; default: @@ -437,7 +437,7 @@ static inline int core_alua_state_unavailable( case REPORT_LUNS: return 0; case MAINTENANCE_IN: - switch (cdb[1]) { + switch (cdb[1] & 0x1f) { case MI_REPORT_TARGET_PGS: return 0; default: @@ -478,7 +478,7 @@ static inline int core_alua_state_transition( case REPORT_LUNS: return 0; 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 f687892b00be..50519b2f12b0 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1458,6 +1458,7 @@ 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 */ @@ -2813,7 +2814,7 @@ 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_task = target_emulate_report_target_port_groups; |