DPDK  19.11.10
examples/ip_pipeline/parser.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2016 Intel Corporation.
* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
* All rights reserved.
*/
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <getopt.h>
#include <errno.h>
#include <stdarg.h>
#include <string.h>
#include <libgen.h>
#include <unistd.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <rte_errno.h>
#include <rte_string_fns.h>
#include "parser.h"
static uint32_t
get_hex_val(char c)
{
switch (c) {
case '0': case '1': case '2': case '3': case '4': case '5':
case '6': case '7': case '8': case '9':
return c - '0';
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
return c - 'A' + 10;
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
return c - 'a' + 10;
default:
return 0;
}
}
int
parser_read_arg_bool(const char *p)
{
p = skip_white_spaces(p);
int result = -EINVAL;
if (((p[0] == 'y') && (p[1] == 'e') && (p[2] == 's')) ||
((p[0] == 'Y') && (p[1] == 'E') && (p[2] == 'S'))) {
p += 3;
result = 1;
}
if (((p[0] == 'o') && (p[1] == 'n')) ||
((p[0] == 'O') && (p[1] == 'N'))) {
p += 2;
result = 1;
}
if (((p[0] == 'n') && (p[1] == 'o')) ||
((p[0] == 'N') && (p[1] == 'O'))) {
p += 2;
result = 0;
}
if (((p[0] == 'o') && (p[1] == 'f') && (p[2] == 'f')) ||
((p[0] == 'O') && (p[1] == 'F') && (p[2] == 'F'))) {
p += 3;
result = 0;
}
p = skip_white_spaces(p);
if (p[0] != '\0')
return -EINVAL;
return result;
}
int
parser_read_uint64(uint64_t *value, const char *p)
{
char *next;
uint64_t val;
p = skip_white_spaces(p);
if (!isdigit(*p))
return -EINVAL;
val = strtoul(p, &next, 10);
if (p == next)
return -EINVAL;
p = next;
switch (*p) {
case 'T':
val *= 1024ULL;
/* fall through */
case 'G':
val *= 1024ULL;
/* fall through */
case 'M':
val *= 1024ULL;
/* fall through */
case 'k':
case 'K':
val *= 1024ULL;
p++;
break;
}
p = skip_white_spaces(p);
if (*p != '\0')
return -EINVAL;
*value = val;
return 0;
}
int
parser_read_uint64_hex(uint64_t *value, const char *p)
{
char *next;
uint64_t val;
p = skip_white_spaces(p);
val = strtoul(p, &next, 16);
if (p == next)
return -EINVAL;
p = skip_white_spaces(next);
if (*p != '\0')
return -EINVAL;
*value = val;
return 0;
}
int
parser_read_uint32(uint32_t *value, const char *p)
{
uint64_t val = 0;
int ret = parser_read_uint64(&val, p);
if (ret < 0)
return ret;
if (val > UINT32_MAX)
return -ERANGE;
*value = val;
return 0;
}
int
parser_read_uint32_hex(uint32_t *value, const char *p)
{
uint64_t val = 0;
int ret = parser_read_uint64_hex(&val, p);
if (ret < 0)
return ret;
if (val > UINT32_MAX)
return -ERANGE;
*value = val;
return 0;
}
int
parser_read_uint16(uint16_t *value, const char *p)
{
uint64_t val = 0;
int ret = parser_read_uint64(&val, p);
if (ret < 0)
return ret;
if (val > UINT16_MAX)
return -ERANGE;
*value = val;
return 0;
}
int
parser_read_uint16_hex(uint16_t *value, const char *p)
{
uint64_t val = 0;
int ret = parser_read_uint64_hex(&val, p);
if (ret < 0)
return ret;
if (val > UINT16_MAX)
return -ERANGE;
*value = val;
return 0;
}
int
parser_read_uint8(uint8_t *value, const char *p)
{
uint64_t val = 0;
int ret = parser_read_uint64(&val, p);
if (ret < 0)
return ret;
if (val > UINT8_MAX)
return -ERANGE;
*value = val;
return 0;
}
int
parser_read_uint8_hex(uint8_t *value, const char *p)
{
uint64_t val = 0;
int ret = parser_read_uint64_hex(&val, p);
if (ret < 0)
return ret;
if (val > UINT8_MAX)
return -ERANGE;
*value = val;
return 0;
}
int
parse_tokenize_string(char *string, char *tokens[], uint32_t *n_tokens)
{
uint32_t i;
if ((string == NULL) ||
(tokens == NULL) ||
(*n_tokens < 1))
return -EINVAL;
for (i = 0; i < *n_tokens; i++) {
tokens[i] = strtok_r(string, PARSE_DELIMITER, &string);
if (tokens[i] == NULL)
break;
}
if ((i == *n_tokens) &&
(NULL != strtok_r(string, PARSE_DELIMITER, &string)))
return -E2BIG;
*n_tokens = i;
return 0;
}
int
parse_hex_string(char *src, uint8_t *dst, uint32_t *size)
{
char *c;
uint32_t len, i;
/* Check input parameters */
if ((src == NULL) ||
(dst == NULL) ||
(size == NULL) ||
(*size == 0))
return -1;
len = strlen(src);
if (((len & 3) != 0) ||
(len > (*size) * 2))
return -1;
*size = len / 2;
for (c = src; *c != 0; c++) {
if ((((*c) >= '0') && ((*c) <= '9')) ||
(((*c) >= 'A') && ((*c) <= 'F')) ||
(((*c) >= 'a') && ((*c) <= 'f')))
continue;
return -1;
}
/* Convert chars to bytes */
for (i = 0; i < *size; i++)
dst[i] = get_hex_val(src[2 * i]) * 16 +
get_hex_val(src[2 * i + 1]);
return 0;
}
int
parse_mpls_labels(char *string, uint32_t *labels, uint32_t *n_labels)
{
uint32_t n_max_labels = *n_labels, count = 0;
/* Check for void list of labels */
if (strcmp(string, "<void>") == 0) {
*n_labels = 0;
return 0;
}
/* At least one label should be present */
for ( ; (*string != '\0'); ) {
char *next;
int value;
if (count >= n_max_labels)
return -1;
if (count > 0) {
if (string[0] != ':')
return -1;
string++;
}
value = strtol(string, &next, 10);
if (next == string)
return -1;
string = next;
labels[count++] = (uint32_t) value;
}
*n_labels = count;
return 0;
}
static struct rte_ether_addr *
my_ether_aton(const char *a)
{
int i;
char *end;
unsigned long o[RTE_ETHER_ADDR_LEN];
static struct rte_ether_addr ether_addr;
i = 0;
do {
errno = 0;
o[i] = strtoul(a, &end, 16);
if (errno != 0 || end == a || (end[0] != ':' && end[0] != 0))
return NULL;
a = end + 1;
} while (++i != sizeof(o) / sizeof(o[0]) && end[0] != 0);
/* Junk at the end of line */
if (end[0] != 0)
return NULL;
/* Support the format XX:XX:XX:XX:XX:XX */
if (i == RTE_ETHER_ADDR_LEN) {
while (i-- != 0) {
if (o[i] > UINT8_MAX)
return NULL;
ether_addr.addr_bytes[i] = (uint8_t)o[i];
}
/* Support the format XXXX:XXXX:XXXX */
} else if (i == RTE_ETHER_ADDR_LEN / 2) {
while (i-- != 0) {
if (o[i] > UINT16_MAX)
return NULL;
ether_addr.addr_bytes[i * 2] = (uint8_t)(o[i] >> 8);
ether_addr.addr_bytes[i * 2 + 1] = (uint8_t)(o[i] & 0xff);
}
/* unknown format */
} else
return NULL;
return (struct rte_ether_addr *)&ether_addr;
}
int
parse_ipv4_addr(const char *token, struct in_addr *ipv4)
{
if (strlen(token) >= INET_ADDRSTRLEN)
return -EINVAL;
if (inet_pton(AF_INET, token, ipv4) != 1)
return -EINVAL;
return 0;
}
int
parse_ipv6_addr(const char *token, struct in6_addr *ipv6)
{
if (strlen(token) >= INET6_ADDRSTRLEN)
return -EINVAL;
if (inet_pton(AF_INET6, token, ipv6) != 1)
return -EINVAL;
return 0;
}
int
parse_mac_addr(const char *token, struct rte_ether_addr *addr)
{
struct rte_ether_addr *tmp;
tmp = my_ether_aton(token);
if (tmp == NULL)
return -1;
memcpy(addr, tmp, sizeof(struct rte_ether_addr));
return 0;
}
int
parse_cpu_core(const char *entry,
struct cpu_core_params *p)
{
size_t num_len;
char num[8];
uint32_t s = 0, c = 0, h = 0, val;
uint8_t s_parsed = 0, c_parsed = 0, h_parsed = 0;
const char *next = skip_white_spaces(entry);
char type;
if (p == NULL)
return -EINVAL;
/* Expect <CORE> or [sX][cY][h]. At least one parameter is required. */
while (*next != '\0') {
/* If everything parsed nothing should left */
if (s_parsed && c_parsed && h_parsed)
return -EINVAL;
type = *next;
switch (type) {
case 's':
case 'S':
if (s_parsed || c_parsed || h_parsed)
return -EINVAL;
s_parsed = 1;
next++;
break;
case 'c':
case 'C':
if (c_parsed || h_parsed)
return -EINVAL;
c_parsed = 1;
next++;
break;
case 'h':
case 'H':
if (h_parsed)
return -EINVAL;
h_parsed = 1;
next++;
break;
default:
/* If it start from digit it must be only core id. */
if (!isdigit(*next) || s_parsed || c_parsed || h_parsed)
return -EINVAL;
type = 'C';
}
for (num_len = 0; *next != '\0'; next++, num_len++) {
if (num_len == RTE_DIM(num))
return -EINVAL;
if (!isdigit(*next))
break;
num[num_len] = *next;
}
if (num_len == 0 && type != 'h' && type != 'H')
return -EINVAL;
if (num_len != 0 && (type == 'h' || type == 'H'))
return -EINVAL;
num[num_len] = '\0';
val = strtol(num, NULL, 10);
h = 0;
switch (type) {
case 's':
case 'S':
s = val;
break;
case 'c':
case 'C':
c = val;
break;
case 'h':
case 'H':
h = 1;
break;
}
}
p->socket_id = s;
p->core_id = c;
p->thread_id = h;
return 0;
}