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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Gaëtan Rivet
*/
#include "rte_ethdev.h"
#include "rte_ethdev_driver.h"
#include "ethdev_private.h"
uint16_t
eth_dev_to_id(const struct rte_eth_dev *dev)
{
if (dev == NULL)
return RTE_MAX_ETHPORTS;
return dev - rte_eth_devices;
}
struct rte_eth_dev *
eth_find_device(const struct rte_eth_dev *start, rte_eth_cmp_t cmp,
const void *data)
{
struct rte_eth_dev *edev;
ptrdiff_t idx;
/* Avoid Undefined Behaviour */
if (start != NULL &&
(start < &rte_eth_devices[0] ||
start > &rte_eth_devices[RTE_MAX_ETHPORTS]))
return NULL;
if (start != NULL)
idx = eth_dev_to_id(start) + 1;
else
idx = 0;
for (; idx < RTE_MAX_ETHPORTS; idx++) {
edev = &rte_eth_devices[idx];
if (cmp(edev, data) == 0)
return edev;
}
return NULL;
}
int
rte_eth_devargs_parse_list(char *str, rte_eth_devargs_callback_t callback,
void *data)
{
char *str_start;
int state;
int result;
if (*str != '[')
/* Single element, not a list */
return callback(str, data);
/* Sanity check, then strip the brackets */
str_start = &str[strlen(str) - 1];
if (*str_start != ']') {
RTE_LOG(ERR, EAL, "(%s): List does not end with ']'\n", str);
return -EINVAL;
}
str++;
*str_start = '\0';
/* Process list elements */
state = 0;
while (1) {
if (state == 0) {
if (*str == '\0')
break;
if (*str != ',') {
str_start = str;
state = 1;
}
} else if (state == 1) {
if (*str == ',' || *str == '\0') {
if (str > str_start) {
/* Non-empty string fragment */
*str = '\0';
result = callback(str_start, data);
if (result < 0)
return result;
}
state = 0;
}
}
str++;
}
return 0;
}
static int
rte_eth_devargs_process_range(char *str, uint16_t *list, uint16_t *len_list,
const uint16_t max_list)
{
uint16_t lo, hi, val;
int result;
result = sscanf(str, "%hu-%hu", &lo, &hi);
if (result == 1) {
if (*len_list >= max_list)
return -ENOMEM;
list[(*len_list)++] = lo;
} else if (result == 2) {
if (lo >= hi || lo > RTE_MAX_ETHPORTS || hi > RTE_MAX_ETHPORTS)
return -EINVAL;
for (val = lo; val <= hi; val++) {
if (*len_list >= max_list)
return -ENOMEM;
list[(*len_list)++] = val;
}
} else
return -EINVAL;
return 0;
}
int
rte_eth_devargs_parse_representor_ports(char *str, void *data)
{
struct rte_eth_devargs *eth_da = data;
return rte_eth_devargs_process_range(str, eth_da->representor_ports,
ð_da->nb_representor_ports, RTE_MAX_ETHPORTS);
}
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