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authorNicholas Bellinger <nab@linux-iscsi.org>2011-11-04 02:36:16 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2011-12-06 06:00:49 +0000
commit03e98c9eb916f3f0868c1dc344dde2a60287ff72 (patch)
treecfa47c1cec5b0a589b868c34310ee25f6a6a1939 /drivers/target/target_core_file.c
parent5611cc4572e889b62a7b4c72a413536bf6a9c416 (diff)
downloadvexpress-lsk-03e98c9eb916f3f0868c1dc344dde2a60287ff72.tar.gz
target: Address legacy PYX_TRANSPORT_* return code breakage
This patch removes legacy usage of PYX_TRANSPORT_* return codes in a number of locations and addresses cases where transport_generic_request_failure() was returning the incorrect sense upon CHECK_CONDITION status after the v3.1 converson to use errno return codes. This includes the conversion of transport_generic_request_failure() to process cmd->scsi_sense_reason and handle extra TCM_RESERVATION_CONFLICT before calling transport_send_check_condition_and_sense() to queue up response status. It also drops PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES legacy usgae, and returns TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE w/ a response for these cases. transport_generic_allocate_tasks(), transport_generic_new_cmd(), backend SCF_SCSI_DATA_SG_IO_CDB ->do_task(), and emulated ->execute_task() have all been updated to set se_cmd->scsi_sense_reason and return errno codes universally upon failure. This includes cmd->scsi_sense_reason assignment in target_core_alua.c, target_core_pr.c and target_core_cdb.c emulation code. Finally it updates fabric modules to remove the legacy usage, and for TFO->new_cmd_map() callers forwards return values outside of fabric code. iscsi-target has also been updated to remove a handful of special cases related to the cleanup and signaling QUEUE_FULL handling w/ ft_write_pending() (v2: Drop extra SCF_SCSI_CDB_EXCEPTION check during failure from transport_generic_new_cmd, and re-add missing task->task_error_status assignment in transport_complete_task) Cc: Christoph Hellwig <hch@lst.de> Cc: stable@kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_file.c')
-rw-r--r--drivers/target/target_core_file.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index 67cd6fe05bf..cdd47e8c736 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -449,13 +449,15 @@ static int fd_do_task(struct se_task *task)
}
- if (ret < 0)
+ if (ret < 0) {
+ cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return ret;
+ }
if (ret) {
task->task_scsi_status = GOOD;
transport_complete_task(task, 1);
}
- return PYX_TRANSPORT_SENT_TO_TRANSPORT;
+ return 0;
}
/* fd_free_task(): (Part of se_subsystem_api_t template)