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Commit 55c72ab6 authored by Dan Williams's avatar Dan Williams
Browse files

tools/testing/nvdimm: allow custom error code injection 



Given that libnvdimm driver stack takes specific actions on DIMM command
error codes like -EACCES, provide a facility to inject custom failures.

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent e7c5a571

tools/testing/nvdimm/test/nfit.c

+37 −1
Original line number Diff line number Diff line
@@ -138,6 +138,7 @@ static u32 handle[] = { 
};



static unsigned long dimm_fail_cmd_flags[NUM_DCR];

static int dimm_fail_cmd_code[NUM_DCR];



struct nfit_test_fw {

	enum intel_fw_update_state state;
@@ -892,8 +893,11 @@ static int get_dimm(struct nfit_mem *nfit_mem, unsigned int func) 
	if (i >= ARRAY_SIZE(handle))

		return -ENXIO;



	if ((1 << func) & dimm_fail_cmd_flags[i])

	if ((1 << func) & dimm_fail_cmd_flags[i]) {

		if (dimm_fail_cmd_code[i])

			return dimm_fail_cmd_code[i];

		return -EIO;

	}



	return i;

}
@@ -1225,8 +1229,40 @@ static ssize_t fail_cmd_store(struct device *dev, struct device_attribute *attr, 
}

static DEVICE_ATTR_RW(fail_cmd);



static ssize_t fail_cmd_code_show(struct device *dev, struct device_attribute *attr,

		char *buf)

{

	int dimm = dimm_name_to_id(dev);



	if (dimm < 0)

		return dimm;



	return sprintf(buf, "%d\n", dimm_fail_cmd_code[dimm]);

}



static ssize_t fail_cmd_code_store(struct device *dev, struct device_attribute *attr,

		const char *buf, size_t size)

{

	int dimm = dimm_name_to_id(dev);

	unsigned long val;

	ssize_t rc;



	if (dimm < 0)

		return dimm;



	rc = kstrtol(buf, 0, &val);

	if (rc)

		return rc;



	dimm_fail_cmd_code[dimm] = val;

	return size;

}

static DEVICE_ATTR_RW(fail_cmd_code);





static struct attribute *nfit_test_dimm_attributes[] = {

	&dev_attr_fail_cmd.attr,

	&dev_attr_fail_cmd_code.attr,

	&dev_attr_handle.attr,

	NULL,

};