leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

scsi: qla2xxx: Allow dev_loss_tmo setting for FC-NVMe devices

Browse Source 
Add a remote port debugfs entry to get/set dev_loss_tmo for NVMe devices.

Link: https://lore.kernel.org/r/20200904045128.23631-4-njavali@marvell.com
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Arun Easi 2020-09-03 21:51:18 -07:00 committed by Martin K. Petersen
parent 1e98fb0f92
commit 27c8aa5e1b
1 changed files with 58 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
drivers/scsi/qla2xxx/qla_dfs.c
View File

@ -12,6 +12,61 @@
static struct dentry *qla2x00_dfs_root;
static atomic_t qla2x00_dfs_root_count;
#define QLA_DFS_RPORT_DEVLOSS_TMO 1
static int
qla_dfs_rport_get(struct fc_port *fp, int attr_id, u64 *val)
{
switch (attr_id) {
case QLA_DFS_RPORT_DEVLOSS_TMO:
/* Only supported for FC-NVMe devices that are registered. */
if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
return -EIO;
*val = fp->nvme_remote_port->dev_loss_tmo;
break;
default:
return -EINVAL;
}
return 0;
}
static int
qla_dfs_rport_set(struct fc_port *fp, int attr_id, u64 val)
{
switch (attr_id) {
case QLA_DFS_RPORT_DEVLOSS_TMO:
/* Only supported for FC-NVMe devices that are registered. */
if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
return -EIO;
#if (IS_ENABLED(CONFIG_NVME_FC))
return nvme_fc_set_remoteport_devloss(fp->nvme_remote_port,
val);
#else /* CONFIG_NVME_FC */
return -EINVAL;
#endif /* CONFIG_NVME_FC */
default:
return -EINVAL;
}
return 0;
}
#define DEFINE_QLA_DFS_RPORT_RW_ATTR(_attr_id, _attr) \
static int qla_dfs_rport_##_attr##_get(void *data, u64 *val) \
{ \
struct fc_port *fp = data; \
return qla_dfs_rport_get(fp, _attr_id, val); \
} \
static int qla_dfs_rport_##_attr##_set(void *data, u64 val) \
{ \
struct fc_port *fp = data; \
return qla_dfs_rport_set(fp, _attr_id, val); \
} \
DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_##_attr##_fops, \
qla_dfs_rport_##_attr##_get, \
qla_dfs_rport_##_attr##_set, "%llu\n")
DEFINE_QLA_DFS_RPORT_RW_ATTR(QLA_DFS_RPORT_DEVLOSS_TMO, dev_loss_tmo);
void
qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp)
{
@ -24,6 +79,9 @@ qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp)
fp->dfs_rport_dir = debugfs_create_dir(wwn, vha->dfs_rport_root);
if (!fp->dfs_rport_dir)
return;
if (NVME_TARGET(vha->hw, fp))
debugfs_create_file("dev_loss_tmo", 0600, fp->dfs_rport_dir,
fp, &qla_dfs_rport_dev_loss_tmo_fops);
}
void