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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2020 Intel Corporation
*/
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <inttypes.h>
#undef RTE_USE_LIBBSD
#include <stdbool.h>
#include <rte_string_fns.h>
#include "telemetry_data.h"
#define RTE_TEL_UINT_HEX_STR_BUF_LEN 64
int
rte_tel_data_start_array(struct rte_tel_data *d, enum rte_tel_value_type type)
{
enum tel_container_types array_types[] = {
[RTE_TEL_STRING_VAL] = TEL_ARRAY_STRING,
[RTE_TEL_INT_VAL] = TEL_ARRAY_INT,
[RTE_TEL_UINT_VAL] = TEL_ARRAY_UINT,
[RTE_TEL_CONTAINER] = TEL_ARRAY_CONTAINER,
};
d->type = array_types[type];
d->data_len = 0;
return 0;
}
int
rte_tel_data_start_dict(struct rte_tel_data *d)
{
d->type = TEL_DICT;
d->data_len = 0;
return 0;
}
int
rte_tel_data_string(struct rte_tel_data *d, const char *str)
{
d->type = TEL_STRING;
d->data_len = strlcpy(d->data.str, str, sizeof(d->data.str));
if (d->data_len >= RTE_TEL_MAX_SINGLE_STRING_LEN) {
d->data_len = RTE_TEL_MAX_SINGLE_STRING_LEN - 1;
return E2BIG; /* not necessarily and error, just truncation */
}
return 0;
}
int
rte_tel_data_add_array_string(struct rte_tel_data *d, const char *str)
{
if (d->type != TEL_ARRAY_STRING)
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_ARRAY_ENTRIES)
return -ENOSPC;
const size_t bytes = strlcpy(d->data.array[d->data_len++].sval,
str, RTE_TEL_MAX_STRING_LEN);
return bytes < RTE_TEL_MAX_STRING_LEN ? 0 : E2BIG;
}
int
rte_tel_data_add_array_int(struct rte_tel_data *d, int64_t x)
{
if (d->type != TEL_ARRAY_INT)
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_ARRAY_ENTRIES)
return -ENOSPC;
d->data.array[d->data_len++].ival = x;
return 0;
}
int
rte_tel_data_add_array_uint(struct rte_tel_data *d, uint64_t x)
{
if (d->type != TEL_ARRAY_UINT)
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_ARRAY_ENTRIES)
return -ENOSPC;
d->data.array[d->data_len++].uval = x;
return 0;
}
int
rte_tel_data_add_array_u64(struct rte_tel_data *d, uint64_t x)
{
return rte_tel_data_add_array_uint(d, x);
}
int
rte_tel_data_add_array_container(struct rte_tel_data *d,
struct rte_tel_data *val, int keep)
{
if (d->type != TEL_ARRAY_CONTAINER ||
(val->type != TEL_ARRAY_UINT
&& val->type != TEL_ARRAY_INT
&& val->type != TEL_ARRAY_STRING))
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_ARRAY_ENTRIES)
return -ENOSPC;
d->data.array[d->data_len].container.data = val;
d->data.array[d->data_len++].container.keep = !!keep;
return 0;
}
static int
rte_tel_uint_to_hex_encoded_str(char *buf, size_t buf_len, uint64_t val,
uint8_t display_bitwidth)
{
int spec_hex_width = (display_bitwidth + 3) / 4;
int len;
if (display_bitwidth != 0)
len = snprintf(buf, buf_len, "0x%0*" PRIx64, spec_hex_width, val);
else
len = snprintf(buf, buf_len, "0x%" PRIx64, val);
return len < (int)buf_len ? 0 : -EINVAL;
}
int
rte_tel_data_add_array_uint_hex(struct rte_tel_data *d, uint64_t val,
uint8_t display_bitwidth)
{
char hex_str[RTE_TEL_UINT_HEX_STR_BUF_LEN];
int ret;
ret = rte_tel_uint_to_hex_encoded_str(hex_str,
RTE_TEL_UINT_HEX_STR_BUF_LEN, val, display_bitwidth);
if (ret != 0)
return ret;
return rte_tel_data_add_array_string(d, hex_str);
}
static bool
valid_name(const char *name)
{
/* non-alphanumeric characters allowed in names */
static const char allowed[128] = { ['_'] = 1, ['/'] = 1 };
for (; *name != '\0'; name++) {
if (isalnum(*name))
continue;
if ((size_t)*name >= RTE_DIM(allowed) || allowed[(int)*name] == 0)
return false;
}
return true;
}
int
rte_tel_data_add_dict_string(struct rte_tel_data *d, const char *name,
const char *val)
{
struct tel_dict_entry *e = &d->data.dict[d->data_len];
size_t nbytes, vbytes;
if (d->type != TEL_DICT)
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_DICT_ENTRIES)
return -ENOSPC;
if (!valid_name(name))
return -EINVAL;
d->data_len++;
e->type = RTE_TEL_STRING_VAL;
vbytes = strlcpy(e->value.sval, val, RTE_TEL_MAX_STRING_LEN);
nbytes = strlcpy(e->name, name, RTE_TEL_MAX_STRING_LEN);
if (vbytes >= RTE_TEL_MAX_STRING_LEN ||
nbytes >= RTE_TEL_MAX_STRING_LEN)
return E2BIG;
return 0;
}
int
rte_tel_data_add_dict_int(struct rte_tel_data *d, const char *name, int64_t val)
{
struct tel_dict_entry *e = &d->data.dict[d->data_len];
if (d->type != TEL_DICT)
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_DICT_ENTRIES)
return -ENOSPC;
if (!valid_name(name))
return -EINVAL;
d->data_len++;
e->type = RTE_TEL_INT_VAL;
e->value.ival = val;
const size_t bytes = strlcpy(e->name, name, RTE_TEL_MAX_STRING_LEN);
return bytes < RTE_TEL_MAX_STRING_LEN ? 0 : E2BIG;
}
int
rte_tel_data_add_dict_uint(struct rte_tel_data *d,
const char *name, uint64_t val)
{
struct tel_dict_entry *e = &d->data.dict[d->data_len];
if (d->type != TEL_DICT)
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_DICT_ENTRIES)
return -ENOSPC;
if (!valid_name(name))
return -EINVAL;
d->data_len++;
e->type = RTE_TEL_UINT_VAL;
e->value.uval = val;
const size_t bytes = strlcpy(e->name, name, RTE_TEL_MAX_STRING_LEN);
return bytes < RTE_TEL_MAX_STRING_LEN ? 0 : E2BIG;
}
int
rte_tel_data_add_dict_u64(struct rte_tel_data *d, const char *name, uint64_t val)
{
return rte_tel_data_add_dict_uint(d, name, val);
}
int
rte_tel_data_add_dict_container(struct rte_tel_data *d, const char *name,
struct rte_tel_data *val, int keep)
{
struct tel_dict_entry *e = &d->data.dict[d->data_len];
if (d->type != TEL_DICT || (val->type != TEL_ARRAY_UINT
&& val->type != TEL_ARRAY_INT
&& val->type != TEL_ARRAY_STRING
&& val->type != TEL_DICT))
return -EINVAL;
if (d->data_len >= RTE_TEL_MAX_DICT_ENTRIES)
return -ENOSPC;
if (!valid_name(name))
return -EINVAL;
d->data_len++;
e->type = RTE_TEL_CONTAINER;
e->value.container.data = val;
e->value.container.keep = !!keep;
const size_t bytes = strlcpy(e->name, name, RTE_TEL_MAX_STRING_LEN);
return bytes < RTE_TEL_MAX_STRING_LEN ? 0 : E2BIG;
}
int
rte_tel_data_add_dict_uint_hex(struct rte_tel_data *d, const char *name,
uint64_t val, uint8_t display_bitwidth)
{
char hex_str[RTE_TEL_UINT_HEX_STR_BUF_LEN];
int ret;
ret = rte_tel_uint_to_hex_encoded_str(hex_str,
RTE_TEL_UINT_HEX_STR_BUF_LEN, val, display_bitwidth);
if (ret != 0)
return ret;
return rte_tel_data_add_dict_string(d, name, hex_str);
}
struct rte_tel_data *
rte_tel_data_alloc(void)
{
return malloc(sizeof(struct rte_tel_data));
}
void
rte_tel_data_free(struct rte_tel_data *data)
{
free(data);
}
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