[dpdk-dev] [PATCH v2 12/22] net/softnic: add cli interface

[Jasvinder Singh <jasvinder.singh@intel.com>]

Add interface for softnic cli commands.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
---
 drivers/net/softnic/Makefile                    |   2 +
 drivers/net/softnic/parser.c                    | 687 ++++++++++++++++++++++++
 drivers/net/softnic/parser.h                    |  66 +++
 drivers/net/softnic/rte_eth_softnic_cli.c       | 119 ++++
 drivers/net/softnic/rte_eth_softnic_internals.h |  15 +
 5 files changed, 889 insertions(+)
 create mode 100644 drivers/net/softnic/parser.c
 create mode 100644 drivers/net/softnic/parser.h
 create mode 100644 drivers/net/softnic/rte_eth_softnic_cli.c

diff --git a/drivers/net/softnic/Makefile b/drivers/net/softnic/Makefile
index acecc0d..b4942ba 100644
--- a/drivers/net/softnic/Makefile
+++ b/drivers/net/softnic/Makefile
@@ -32,6 +32,8 @@ SRCS-$(CONFIG_RTE_LIBRTE_PMD_SOFTNIC) += rte_eth_softnic_tap.c
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_SOFTNIC) += rte_eth_softnic_action.c
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_SOFTNIC) += rte_eth_softnic_pipeline.c
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_SOFTNIC) += rte_eth_softnic_thread.c
+SRCS-$(CONFIG_RTE_LIBRTE_PMD_SOFTNIC) += rte_eth_softnic_cli.c
+SRCS-$(CONFIG_RTE_LIBRTE_PMD_SOFTNIC) += parser.c
 
 #
 # Export include files
diff --git a/drivers/net/softnic/parser.c b/drivers/net/softnic/parser.c
new file mode 100644
index 0000000..c55b819
--- /dev/null
+++ b/drivers/net/softnic/parser.c
@@ -0,0 +1,687 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016 Intel Corporation.
+ * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
+ * All rights reserved.
+ */
+
+/*
+ * 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 <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 <rte_errno.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
+softnic_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
+softnic_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
+softnic_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
+softnic_parser_read_uint32(uint32_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = softnic_parser_read_uint64(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT32_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+softnic_parser_read_uint32_hex(uint32_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = softnic_parser_read_uint64_hex(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT32_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+softnic_parser_read_uint16(uint16_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = softnic_parser_read_uint64(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT16_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+softnic_parser_read_uint16_hex(uint16_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = softnic_parser_read_uint64_hex(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT16_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+softnic_parser_read_uint8(uint8_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = softnic_parser_read_uint64(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT8_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+softnic_parser_read_uint8_hex(uint8_t *value, const char *p)
+{
+	uint64_t val = 0;
+	int ret = softnic_parser_read_uint64_hex(&val, p);
+
+	if (ret < 0)
+		return ret;
+
+	if (val > UINT8_MAX)
+		return -ERANGE;
+
+	*value = val;
+	return 0;
+}
+
+int
+softnic_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
+softnic_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
+softnic_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;
+}
+
+#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 *)&ether_addr;
+}
+
+int
+softnic_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
+softnic_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
+softnic_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
+softnic_parse_cpu_core(const char *entry,
+	struct softnic_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;
+}
diff --git a/drivers/net/softnic/parser.h b/drivers/net/softnic/parser.h
new file mode 100644
index 0000000..5ab4763
--- /dev/null
+++ b/drivers/net/softnic/parser.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2016 Intel Corporation
+ */
+
+#ifndef __INCLUDE_SOFTNIC_PARSER_H__
+#define __INCLUDE_SOFTNIC_PARSER_H__
+
+#include <stdint.h>
+
+#include <rte_ip.h>
+#include <rte_ether.h>
+
+#define PARSE_DELIMITER				" \f\n\r\t\v"
+
+#define skip_white_spaces(pos)			\
+({						\
+	__typeof__(pos) _p = (pos);		\
+	for ( ; isspace(*_p); _p++)		\
+		;				\
+	_p;					\
+})
+
+static inline size_t
+skip_digits(const char *src)
+{
+	size_t i;
+
+	for (i = 0; isdigit(src[i]); i++)
+		;
+
+	return i;
+}
+
+int softnic_parser_read_arg_bool(const char *p);
+
+int softnic_parser_read_uint64(uint64_t *value, const char *p);
+int softnic_parser_read_uint32(uint32_t *value, const char *p);
+int softnic_parser_read_uint16(uint16_t *value, const char *p);
+int softnic_parser_read_uint8(uint8_t *value, const char *p);
+
+int softnic_parser_read_uint64_hex(uint64_t *value, const char *p);
+int softnic_parser_read_uint32_hex(uint32_t *value, const char *p);
+int softnic_parser_read_uint16_hex(uint16_t *value, const char *p);
+int softnic_parser_read_uint8_hex(uint8_t *value, const char *p);
+
+int softnic_parse_hex_string(char *src, uint8_t *dst, uint32_t *size);
+
+int softnic_parse_ipv4_addr(const char *token, struct in_addr *ipv4);
+int softnic_parse_ipv6_addr(const char *token, struct in6_addr *ipv6);
+int softnic_parse_mac_addr(const char *token, struct ether_addr *addr);
+int softnic_parse_mpls_labels(char *string,
+		uint32_t *labels, uint32_t *n_labels);
+
+struct softnic_cpu_core_params {
+	uint32_t socket_id;
+	uint32_t core_id;
+	uint32_t thread_id;
+};
+
+int softnic_parse_cpu_core(const char *entry,
+		struct softnic_cpu_core_params *p);
+
+int softnic_parse_tokenize_string(char *string,
+		char *tokens[], uint32_t *n_tokens);
+
+#endif
diff --git a/drivers/net/softnic/rte_eth_softnic_cli.c b/drivers/net/softnic/rte_eth_softnic_cli.c
new file mode 100644
index 0000000..00b9daa
--- /dev/null
+++ b/drivers/net/softnic/rte_eth_softnic_cli.c
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "rte_eth_softnic_internals.h"
+#include "parser.h"
+
+#ifndef CMD_MAX_TOKENS
+#define CMD_MAX_TOKENS     256
+#endif
+
+#define MSG_OUT_OF_MEMORY   "Not enough memory.\n"
+#define MSG_CMD_UNKNOWN     "Unknown command \"%s\".\n"
+#define MSG_CMD_UNIMPLEM    "Command \"%s\" not implemented.\n"
+#define MSG_ARG_NOT_ENOUGH  "Not enough arguments for command \"%s\".\n"
+#define MSG_ARG_TOO_MANY    "Too many arguments for command \"%s\".\n"
+#define MSG_ARG_MISMATCH    "Wrong number of arguments for command \"%s\".\n"
+#define MSG_ARG_NOT_FOUND   "Argument \"%s\" not found.\n"
+#define MSG_ARG_INVALID     "Invalid value for argument \"%s\".\n"
+#define MSG_FILE_ERR        "Error in file \"%s\" at line %u.\n"
+#define MSG_FILE_NOT_ENOUGH "Not enough rules in file \"%s\".\n"
+#define MSG_CMD_FAIL        "Command \"%s\" failed.\n"
+
+static int
+is_comment(char *in)
+{
+	if ((strlen(in) && index("!#%;", in[0])) ||
+		(strncmp(in, "//", 2) == 0) ||
+		(strncmp(in, "--", 2) == 0))
+		return 1;
+
+	return 0;
+}
+
+void
+cli_process(char *in, char *out, size_t out_size, void *arg)
+{
+	char *tokens[CMD_MAX_TOKENS];
+	uint32_t n_tokens = RTE_DIM(tokens);
+	int status;
+
+	arg = arg;
+
+	if (is_comment(in))
+		return;
+
+	status = softnic_parse_tokenize_string(in, tokens, &n_tokens);
+	if (status) {
+		snprintf(out, out_size, MSG_ARG_TOO_MANY, "");
+		return;
+	}
+
+	if (n_tokens == 0)
+		return;
+
+	snprintf(out, out_size, MSG_CMD_UNKNOWN, tokens[0]);
+}
+
+int
+cli_script_process(struct pmd_internals *softnic,
+	const char *file_name,
+	size_t msg_in_len_max,
+	size_t msg_out_len_max)
+{
+	char *msg_in = NULL, *msg_out = NULL;
+	FILE *f = NULL;
+
+	/* Check input arguments */
+	if (file_name == NULL ||
+		strlen(file_name) == 0 ||
+		msg_in_len_max == 0 ||
+		msg_out_len_max == 0)
+		return -EINVAL;
+
+	msg_in = malloc(msg_in_len_max + 1);
+	msg_out = malloc(msg_out_len_max + 1);
+	if (msg_in == NULL ||
+		msg_out == NULL) {
+		free(msg_out);
+		free(msg_in);
+		return -ENOMEM;
+	}
+
+	/* Open input file */
+	f = fopen(file_name, "r");
+	if (f == NULL) {
+		free(msg_out);
+		free(msg_in);
+		return -EIO;
+	}
+
+	/* Read file */
+	for ( ; ; ) {
+		if (fgets(msg_in, msg_in_len_max + 1, f) == NULL)
+			break;
+
+		printf("%s", msg_in);
+		msg_out[0] = 0;
+
+		cli_process(msg_in,
+			msg_out,
+			msg_out_len_max,
+			softnic);
+
+		if (strlen(msg_out))
+			printf("%s", msg_out);
+	}
+
+	/* Close file */
+	fclose(f);
+	free(msg_out);
+	free(msg_in);
+	return 0;
+}
diff --git a/drivers/net/softnic/rte_eth_softnic_internals.h b/drivers/net/softnic/rte_eth_softnic_internals.h
index 95a1636..04a35b5 100644
--- a/drivers/net/softnic/rte_eth_softnic_internals.h
+++ b/drivers/net/softnic/rte_eth_softnic_internals.h
@@ -708,4 +708,19 @@ thread_init(struct pmd_internals *p);
 void
 thread_free(struct pmd_internals *p);
 
+/**
+ * CLI
+ */
+void
+cli_process(char *in,
+	char *out,
+	size_t out_size,
+	void *arg);
+
+int
+cli_script_process(struct pmd_internals *softnic,
+	const char *file_name,
+	size_t msg_in_len_max,
+	size_t msg_out_len_max);
+
 #endif /* __INCLUDE_RTE_ETH_SOFTNIC_INTERNALS_H__ */
-- 
2.9.3