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authorAndy Grover <agrover@redhat.com>2016-10-06 10:07:07 -0500
committerNicholas Bellinger <nab@linux-iscsi.org>2016-10-19 21:21:45 -0700
commit02eb924fabc5b699c0d9d354491e6f0767e3c139 (patch)
tree1ddfba8937884a6da8fcefe5fb25ee3b27b1591b /drivers/target
parent1001354ca34179f3db924eb66672442a173147dc (diff)
downloadlinux-02eb924fabc5b699c0d9d354491e6f0767e3c139.tar.bz2
target/user: Use sense_reason_t in tcmu_queue_cmd_ring
Instead of using -ERROR-style returns, use sense_reason_t. This lets us remove tcmu_pass_op(), and return more correct sense values. Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_user.c29
1 files changed, 10 insertions, 19 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 62bf4fe5704a..0cd1c61ba2ed 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -389,7 +389,8 @@ static bool is_ring_space_avail(struct tcmu_dev *udev, size_t cmd_size, size_t d
return true;
}
-static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd)
+static sense_reason_t
+tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd)
{
struct tcmu_dev *udev = tcmu_cmd->tcmu_dev;
struct se_cmd *se_cmd = tcmu_cmd->se_cmd;
@@ -405,7 +406,7 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd)
DECLARE_BITMAP(old_bitmap, DATA_BLOCK_BITS);
if (test_bit(TCMU_DEV_BIT_BROKEN, &udev->flags))
- return -EINVAL;
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
/*
* Must be a certain minimum size for response sense info, but
@@ -450,7 +451,7 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd)
finish_wait(&udev->wait_cmdr, &__wait);
if (!ret) {
pr_warn("tcmu: command timed out\n");
- return -ETIMEDOUT;
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
spin_lock_irq(&udev->cmdr_lock);
@@ -526,10 +527,11 @@ static int tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd)
mod_timer(&udev->timeout,
round_jiffies_up(jiffies + msecs_to_jiffies(TCMU_TIME_OUT)));
- return 0;
+ return TCM_NO_SENSE;
}
-static int tcmu_queue_cmd(struct se_cmd *se_cmd)
+static sense_reason_t
+tcmu_queue_cmd(struct se_cmd *se_cmd)
{
struct se_device *se_dev = se_cmd->se_dev;
struct tcmu_dev *udev = TCMU_DEV(se_dev);
@@ -538,10 +540,10 @@ static int tcmu_queue_cmd(struct se_cmd *se_cmd)
tcmu_cmd = tcmu_alloc_cmd(se_cmd);
if (!tcmu_cmd)
- return -ENOMEM;
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
ret = tcmu_queue_cmd_ring(tcmu_cmd);
- if (ret < 0) {
+ if (ret != TCM_NO_SENSE) {
pr_err("TCMU: Could not queue command\n");
spin_lock_irq(&udev->commands_lock);
idr_remove(&udev->commands, tcmu_cmd->cmd_id);
@@ -1129,20 +1131,9 @@ static sector_t tcmu_get_blocks(struct se_device *dev)
}
static sense_reason_t
-tcmu_pass_op(struct se_cmd *se_cmd)
-{
- int ret = tcmu_queue_cmd(se_cmd);
-
- if (ret != 0)
- return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
- else
- return TCM_NO_SENSE;
-}
-
-static sense_reason_t
tcmu_parse_cdb(struct se_cmd *cmd)
{
- return passthrough_parse_cdb(cmd, tcmu_pass_op);
+ return passthrough_parse_cdb(cmd, tcmu_queue_cmd);
}
static const struct target_backend_ops tcmu_ops = {