From ed7a0490f7e237259ea24d059bf0b8b63e543cbc Mon Sep 17 00:00:00 2001 From: Piotr Azarewicz Date: Wed, 8 Jun 2016 12:35:19 +0200 Subject: [PATCH] examples/ip_pipeline: add string parsing helpers Add a couple of additional functions that will allow to parse many types of input parameters, i.e.: bool, 16, 32, 64 bits, hex, etc. Signed-off-by: Piotr Azarewicz Acked-by: Cristian Dumitrescu --- examples/ip_pipeline/Makefile | 1 + examples/ip_pipeline/config_parse.c | 257 +--------- examples/ip_pipeline/parser.c | 745 ++++++++++++++++++++++++++++ examples/ip_pipeline/parser.h | 54 +- 4 files changed, 791 insertions(+), 266 deletions(-) create mode 100644 examples/ip_pipeline/parser.c diff --git a/examples/ip_pipeline/Makefile b/examples/ip_pipeline/Makefile index 10fe1ba91a..5827117349 100644 --- a/examples/ip_pipeline/Makefile +++ b/examples/ip_pipeline/Makefile @@ -50,6 +50,7 @@ INC += $(wildcard *.h) $(wildcard pipeline/*.h) # all source are stored in SRCS-y SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) := main.c SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += config_parse.c +SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += parser.c SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += config_parse_tm.c SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += config_check.c SRCS-$(CONFIG_RTE_LIBRTE_PIPELINE) += init.c diff --git a/examples/ip_pipeline/config_parse.c b/examples/ip_pipeline/config_parse.c index 6710ee65b4..3951e1df9f 100644 --- a/examples/ip_pipeline/config_parse.c +++ b/examples/ip_pipeline/config_parse.c @@ -30,6 +30,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ + #include #include #include @@ -229,13 +230,6 @@ app_print_usage(char *prgname) rte_exit(0, app_usage, prgname, app_params_default.config_file); } -#define skip_white_spaces(pos) \ -({ \ - __typeof__(pos) _p = (pos); \ - for ( ; isspace(*_p); _p++); \ - _p; \ -}) - #define PARSER_PARAM_ADD_CHECK(result, params_array, section_name) \ do { \ APP_CHECK((result != -EINVAL), \ @@ -248,44 +242,6 @@ do { \ "Parse error in section \"%s\"", section_name); \ } while (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; -} - #define PARSE_ERROR(exp, section, entry) \ APP_CHECK(exp, "Parse error in section \"%s\": entry \"%s\"\n", section, entry) @@ -318,217 +274,6 @@ APP_CHECK(exp, "Parse error in section \"%s\": unrecognized entry \"%s\"\n",\ APP_CHECK(exp, "Parse error in section \"%s\": duplicate entry \"%s\"\n",\ section, entry) -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_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 -parse_pipeline_core(uint32_t *socket, - uint32_t *core, - uint32_t *ht, - const char *entry) -{ - 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; - - /* Expect 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; - } - } - - *socket = s; - *core = c; - *ht = h; - return 0; -} - -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 -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; -} - -static size_t -skip_digits(const char *src) -{ - size_t i; - - for (i = 0; isdigit(src[i]); i++); - - return i; -} - static int validate_name(const char *name, const char *prefix, int num) { diff --git a/examples/ip_pipeline/parser.c b/examples/ip_pipeline/parser.c new file mode 100644 index 0000000000..689e2065a8 --- /dev/null +++ b/examples/ip_pipeline/parser.c @@ -0,0 +1,745 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2016 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * For my_ether_aton() function: + * + * Copyright (c) 2009, Olivier MATZ + * All rights reserved. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the University of California, Berkeley nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * For inet_pton4() and inet_pton6() functions: + * + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "app.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, "") == 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; +} + +#define INADDRSZ 4 +#define IN6ADDRSZ 16 + +/* int + * inet_pton4(src, dst) + * like inet_aton() but without all the hexadecimal and shorthand. + * return: + * 1 if `src' is a valid dotted quad, else 0. + * notice: + * does not touch `dst' unless it's returning 1. + * author: + * Paul Vixie, 1996. + */ +static int +inet_pton4(const char *src, unsigned char *dst) +{ + static const char digits[] = "0123456789"; + int saw_digit, octets, ch; + unsigned char tmp[INADDRSZ], *tp; + + saw_digit = 0; + octets = 0; + *(tp = tmp) = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + pch = strchr(digits, ch); + if (pch != NULL) { + unsigned int new = *tp * 10 + (pch - digits); + + if (new > 255) + return 0; + if (!saw_digit) { + if (++octets > 4) + return 0; + saw_digit = 1; + } + *tp = (unsigned char)new; + } else if (ch == '.' && saw_digit) { + if (octets == 4) + return 0; + *++tp = 0; + saw_digit = 0; + } else + return 0; + } + if (octets < 4) + return 0; + + memcpy(dst, tmp, INADDRSZ); + return 1; +} + +/* int + * inet_pton6(src, dst) + * convert presentation level address to network order binary form. + * return: + * 1 if `src' is a valid [RFC1884 2.2] address, else 0. + * notice: + * (1) does not touch `dst' unless it's returning 1. + * (2) :: in a full address is silently ignored. + * credit: + * inspired by Mark Andrews. + * author: + * Paul Vixie, 1996. + */ +static int +inet_pton6(const char *src, unsigned char *dst) +{ + static const char xdigits_l[] = "0123456789abcdef", + xdigits_u[] = "0123456789ABCDEF"; + unsigned char tmp[IN6ADDRSZ], *tp = 0, *endp = 0, *colonp = 0; + const char *xdigits = 0, *curtok = 0; + int ch = 0, saw_xdigit = 0, count_xdigit = 0; + unsigned int val = 0; + unsigned dbloct_count = 0; + + memset((tp = tmp), '\0', IN6ADDRSZ); + endp = tp + IN6ADDRSZ; + colonp = NULL; + /* Leading :: requires some special handling. */ + if (*src == ':') + if (*++src != ':') + return 0; + curtok = src; + saw_xdigit = count_xdigit = 0; + val = 0; + + while ((ch = *src++) != '\0') { + const char *pch; + + pch = strchr((xdigits = xdigits_l), ch); + if (pch == NULL) + pch = strchr((xdigits = xdigits_u), ch); + if (pch != NULL) { + if (count_xdigit >= 4) + return 0; + val <<= 4; + val |= (pch - xdigits); + if (val > 0xffff) + return 0; + saw_xdigit = 1; + count_xdigit++; + continue; + } + if (ch == ':') { + curtok = src; + if (!saw_xdigit) { + if (colonp) + return 0; + colonp = tp; + continue; + } else if (*src == '\0') { + return 0; + } + if (tp + sizeof(int16_t) > endp) + return 0; + *tp++ = (unsigned char) ((val >> 8) & 0xff); + *tp++ = (unsigned char) (val & 0xff); + saw_xdigit = 0; + count_xdigit = 0; + val = 0; + dbloct_count++; + continue; + } + if (ch == '.' && ((tp + INADDRSZ) <= endp) && + inet_pton4(curtok, tp) > 0) { + tp += INADDRSZ; + saw_xdigit = 0; + dbloct_count += 2; + break; /* '\0' was seen by inet_pton4(). */ + } + return 0; + } + if (saw_xdigit) { + if (tp + sizeof(int16_t) > endp) + return 0; + *tp++ = (unsigned char) ((val >> 8) & 0xff); + *tp++ = (unsigned char) (val & 0xff); + dbloct_count++; + } + if (colonp != NULL) { + /* if we already have 8 double octets, having a colon means error */ + if (dbloct_count == 8) + return 0; + + /* + * Since some memmove()'s erroneously fail to handle + * overlapping regions, we'll do the shift by hand. + */ + const int n = tp - colonp; + int i; + + for (i = 1; i <= n; i++) { + endp[-i] = colonp[n - i]; + colonp[n - i] = 0; + } + tp = endp; + } + if (tp != endp) + return 0; + memcpy(dst, tmp, IN6ADDRSZ); + return 1; +} + +static struct ether_addr * +my_ether_aton(const char *a) +{ + int i; + char *end; + unsigned long o[ETHER_ADDR_LEN]; + static struct 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 == 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 == 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 ether_addr *)ðer_addr; +} + +int +parse_ipv4_addr(const char *token, struct in_addr *ipv4) +{ + if (strlen(token) >= INET_ADDRSTRLEN) + return -EINVAL; + + if (inet_pton4(token, (unsigned char *)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_pton6(token, (unsigned char *)ipv6) != 1) + return -EINVAL; + + return 0; +} + +int +parse_mac_addr(const char *token, struct ether_addr *addr) +{ + struct ether_addr *tmp; + + tmp = my_ether_aton(token); + if (tmp == NULL) + return -1; + + memcpy(addr, tmp, sizeof(struct ether_addr)); + return 0; +} + +int +parse_pipeline_core(uint32_t *socket, + uint32_t *core, + uint32_t *ht, + const char *entry) +{ + 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; + + /* Expect 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; + } + } + + *socket = s; + *core = c; + *ht = h; + return 0; +} diff --git a/examples/ip_pipeline/parser.h b/examples/ip_pipeline/parser.h index 58b59daf3d..9bd36af324 100644 --- a/examples/ip_pipeline/parser.h +++ b/examples/ip_pipeline/parser.h @@ -1,7 +1,7 @@ /*- * BSD LICENSE * - * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. + * Copyright(c) 2010-2016 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -34,17 +34,51 @@ #ifndef __INCLUDE_PARSER_H__ #define __INCLUDE_PARSER_H__ -int -parser_read_arg_bool(const char *p); +#include -int -parser_read_uint64(uint64_t *value, const char *p); +#include +#include -int -parser_read_uint32(uint32_t *value, const char *p); +#define PARSE_DELIMITER " \f\n\r\t\v" -int -parse_hex_string(char *src, uint8_t *dst, uint32_t *size); +#define skip_white_spaces(pos) \ +({ \ + __typeof__(pos) _p = (pos); \ + for ( ; isspace(*_p); _p++) \ + ; \ + _p; \ +}) -#endif +static inline size_t +skip_digits(const char *src) +{ + size_t i; + + for (i = 0; isdigit(src[i]); i++) + ; + + return i; +} + +int parser_read_arg_bool(const char *p); + +int parser_read_uint64(uint64_t *value, const char *p); +int parser_read_uint32(uint32_t *value, const char *p); +int parser_read_uint16(uint16_t *value, const char *p); +int parser_read_uint8(uint8_t *value, const char *p); +int parser_read_uint64_hex(uint64_t *value, const char *p); +int parser_read_uint32_hex(uint32_t *value, const char *p); +int parser_read_uint16_hex(uint16_t *value, const char *p); +int parser_read_uint8_hex(uint8_t *value, const char *p); + +int parse_hex_string(char *src, uint8_t *dst, uint32_t *size); + +int parse_ipv4_addr(const char *token, struct in_addr *ipv4); +int parse_ipv6_addr(const char *token, struct in6_addr *ipv6); +int parse_mac_addr(const char *token, struct ether_addr *addr); +int parse_mpls_labels(char *string, uint32_t *labels, uint32_t *n_labels); + +int parse_tokenize_string(char *string, char *tokens[], uint32_t *n_tokens); + +#endif -- 2.20.1