Presently the inject-smart code assumes support injecting all
smart-errors namely media-temperature, controller-temperature,
spares-remaining, fatal-health and unsafe-shutdown. This assumption
may break in case of other non-Intel NVDIMM types namely PAPR NVDIMMs
which presently only have support for injecting unsafe-shutdown and
fatal health events.
Trying to inject-smart errors on PAPR NVDIMMs causes problems as
smart_inject() prematurely exits when trying to inject
media-temperature smart-error errors out.
To fix this issue the patch proposes extending the definition of
dimm_op 'smart_inject_supported' to return bitmap of flags indicating
the type of smart-error injections supported by an NVDIMM. These types
are indicated by the newly introduced defines ND_SMART_INJECT_* . A
dimm-ops provide can return an bitmap composed of these flags back
from its implementation of 'smart_inject_supported' to indicate to
dimm_inject_smart() which type of smart-error injection it
supports. In case of an error the dimm-op is still expected to return
a negative error code back to the caller.
The patch updates intel_dimm_smart_inject_supported() to return a
bitmap composed of all ND_SMART_INJECT_* flags to indicate support for
all smart-error types.
Finally the patch also updates smart_inject() to test for specific
ND_START_INJECT_* flags before sending a smart-inject command via
dimm-provider.
Signed-off-by: Vaibhav Jain <vaib...@linux.ibm.com>
---
ndctl/inject-smart.c | 33 ++++++++++++++++++++++++++-------
ndctl/lib/intel.c | 7 ++++++-
ndctl/libndctl.h | 8 ++++++++
3 files changed, 40 insertions(+), 8 deletions(-)
diff --git a/ndctl/inject-smart.c b/ndctl/inject-smart.c
index 9077bca256e4..ef0620f55531 100644
--- a/ndctl/inject-smart.c
+++ b/ndctl/inject-smart.c
@@ -393,18 +393,26 @@ out:
} \
}
-static int smart_inject(struct ndctl_dimm *dimm)
+static int smart_inject(struct ndctl_dimm *dimm, unsigned int inject_types)
{
const char *name = ndctl_dimm_get_devname(dimm);
struct ndctl_cmd *si_cmd = NULL;
int rc = -EOPNOTSUPP;
- send_inject_val(media_temperature)
- send_inject_val(ctrl_temperature)
- send_inject_val(spares)
- send_inject_bool(fatal)
- send_inject_bool(unsafe_shutdown)
+ if (inject_types & ND_SMART_INJECT_MEDIA_TEMPERATURE)
+ send_inject_val(media_temperature);
+ if (inject_types & ND_SMART_INJECT_CTRL_TEMPERATURE)
+ send_inject_val(ctrl_temperature);
+
+ if (inject_types & ND_SMART_INJECT_SPARES_REMAINING)
+ send_inject_val(spares);
+
+ if (inject_types & ND_SMART_INJECT_HEALTH_STATE)
+ send_inject_bool(fatal);
+
+ if (inject_types & ND_SMART_INJECT_UNCLEAN_SHUTDOWN)
+ send_inject_bool(unsafe_shutdown);
out:
ndctl_cmd_unref(si_cmd);
return rc;
@@ -415,8 +423,10 @@ static int dimm_inject_smart(struct ndctl_dimm *dimm)
struct json_object *jhealth;
struct json_object *jdimms;
struct json_object *jdimm;
+ unsigned int supported_types;
int rc;
+ /* Get supported smart injection types */
rc = ndctl_dimm_smart_inject_supported(dimm);
switch (rc) {
case -ENOTTY:
@@ -431,6 +441,15 @@ static int dimm_inject_smart(struct ndctl_dimm *dimm)
error("%s: smart injection not supported by either platform
firmware or the kernel.",
ndctl_dimm_get_devname(dimm));
return rc;
+ default:
+ if (rc < 0) {
+ error("%s: Unknown error %d while checking for smart
injection support",
+ ndctl_dimm_get_devname(dimm), rc);
+ return rc;
+ }
+ /* Assigning to an unsigned type since rc < 0 */
+ supported_types = rc;
+ break;
}
if (sctx.op_mask & (1 << OP_SET)) {
@@ -439,7 +458,7 @@ static int dimm_inject_smart(struct ndctl_dimm *dimm)
goto out;
}
if (sctx.op_mask & (1 << OP_INJECT)) {
- rc = smart_inject(dimm);
+ rc = smart_inject(dimm, supported_types);
if (rc)
goto out;
}
diff --git a/ndctl/lib/intel.c b/ndctl/lib/intel.c
index a3df26e6bc58..1314854553d5 100644
--- a/ndctl/lib/intel.c
+++ b/ndctl/lib/intel.c
@@ -455,7 +455,12 @@ static int intel_dimm_smart_inject_supported(struct
ndctl_dimm *dimm)
return -EIO;
}
- return 0;
+ /* Indicate all smart injection types are supported */
+ return ND_SMART_INJECT_SPARES_REMAINING |
+ ND_SMART_INJECT_MEDIA_TEMPERATURE |
+ ND_SMART_INJECT_CTRL_TEMPERATURE |
+ ND_SMART_INJECT_HEALTH_STATE |
+ ND_SMART_INJECT_UNCLEAN_SHUTDOWN;
}
static const char *intel_cmd_desc(int fn)
diff --git a/ndctl/libndctl.h b/ndctl/libndctl.h
index 87d07b74ef8b..3a5013007038 100644
--- a/ndctl/libndctl.h
+++ b/ndctl/libndctl.h
@@ -69,6 +69,13 @@ extern "C" {
#define ND_EVENT_HEALTH_STATE (1 << 3)
#define ND_EVENT_UNCLEAN_SHUTDOWN (1 << 4)
+/* Flags indicating support for various smart injection types */
+#define ND_SMART_INJECT_SPARES_REMAINING (1 << 0)
+#define ND_SMART_INJECT_MEDIA_TEMPERATURE (1 << 1)
+#define ND_SMART_INJECT_CTRL_TEMPERATURE (1 << 2)
+#define ND_SMART_INJECT_HEALTH_STATE (1 << 3)
+#define ND_SMART_INJECT_UNCLEAN_SHUTDOWN (1 << 4)
+
size_t ndctl_min_namespace_size(void);
size_t ndctl_sizeof_namespace_index(void);
size_t ndctl_sizeof_namespace_label(void);
@@ -309,6 +316,7 @@ int ndctl_cmd_smart_inject_spares(struct ndctl_cmd *cmd,
bool enable,
unsigned int spares);
int ndctl_cmd_smart_inject_fatal(struct ndctl_cmd *cmd, bool enable);
int ndctl_cmd_smart_inject_unsafe_shutdown(struct ndctl_cmd *cmd, bool enable);
+/* Returns a bitmap of ND_SMART_INJECT_* supported */
int ndctl_dimm_smart_inject_supported(struct ndctl_dimm *dimm);
struct ndctl_cmd *ndctl_dimm_cmd_new_vendor_specific(struct ndctl_dimm *dimm,
--
2.31.1
