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nfit, libnvdimm: deprecate the generic SMART ioctl

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The kernel's ND_IOCTL_SMART_THRESHOLD command is based on a payload
definition that has become broken / out-of-sync with recent versions of
the NVDIMM_FAMILY_INTEL definition. Deprecate the use of the
ND_IOCTL_SMART_THRESHOLD command in favor of the ND_CMD_CALL approach
taken by NVDIMM_FAMILY_{HPE,MSFT}, where we can manage the per-vendor
variance in userspace.

In a couple years, when the new scheme is widely deployed in userspace
packages, the ND_IOCTL_SMART_THRESHOLD support can be removed. For now
we prevent new binaries from compiling against the kernel header
definitions, but kernel still compatible with old binaries. The
libndctl.h [1] header is now the authoritative interface definition for
NVDIMM SMART.

[1]: https://github.com/pmem/ndctl
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2017-11-17 16:23:08 -08:00
parent ae64f9bd1d
commit cdd77d3e19
4 changed files with 84 additions and 71 deletions
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39
tools/testing/nvdimm/test/nfit.c
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@@ -440,39 +440,50 @@ static int nfit_test_cmd_translate_spa(struct nvdimm_bus *bus,
return 0;
}
static int nfit_test_cmd_smart(struct nd_cmd_smart *smart, unsigned int buf_len)
static int nfit_test_cmd_smart(struct nd_intel_smart *smart, unsigned int buf_len)
{
static const struct nd_smart_payload smart_data = {
.flags = ND_SMART_HEALTH_VALID | ND_SMART_TEMP_VALID
| ND_SMART_SPARES_VALID | ND_SMART_ALARM_VALID
| ND_SMART_USED_VALID | ND_SMART_SHUTDOWN_VALID,
.health = ND_SMART_NON_CRITICAL_HEALTH,
.temperature = 23 * 16,
static const struct nd_intel_smart smart_data = {
.flags = ND_INTEL_SMART_HEALTH_VALID
| ND_INTEL_SMART_SPARES_VALID
| ND_INTEL_SMART_ALARM_VALID
| ND_INTEL_SMART_USED_VALID
| ND_INTEL_SMART_SHUTDOWN_VALID
| ND_INTEL_SMART_MTEMP_VALID,
.health = ND_INTEL_SMART_NON_CRITICAL_HEALTH,
.media_temperature = 23 * 16,
.ctrl_temperature = 30 * 16,
.pmic_temperature = 40 * 16,
.spares = 75,
.alarm_flags = ND_SMART_SPARE_TRIP | ND_SMART_TEMP_TRIP,
.alarm_flags = ND_INTEL_SMART_SPARE_TRIP
| ND_INTEL_SMART_TEMP_TRIP,
.ait_status = 1,
.life_used = 5,
.shutdown_state = 0,
.vendor_size = 0,
.shutdown_count = 100,
};
if (buf_len < sizeof(*smart))
return -EINVAL;
memcpy(smart->data, &smart_data, sizeof(smart_data));
memcpy(smart, &smart_data, sizeof(smart_data));
return 0;
}
static int nfit_test_cmd_smart_threshold(struct nd_cmd_smart_threshold *smart_t,
static int nfit_test_cmd_smart_threshold(
struct nd_intel_smart_threshold *smart_t,
unsigned int buf_len)
{
static const struct nd_smart_threshold_payload smart_t_data = {
.alarm_control = ND_SMART_SPARE_TRIP | ND_SMART_TEMP_TRIP,
.temperature = 40 * 16,
static const struct nd_intel_smart_threshold smart_t_data = {
.alarm_control = ND_INTEL_SMART_SPARE_TRIP
| ND_INTEL_SMART_TEMP_TRIP,
.media_temperature = 40 * 16,
.ctrl_temperature = 30 * 16,
.spares = 5,
};
if (buf_len < sizeof(*smart_t))
return -EINVAL;
memcpy(smart_t->data, &smart_t_data, sizeof(smart_t_data));
memcpy(smart_t, &smart_t_data, sizeof(smart_t_data));
return 0;
}