helper: ip: added ipv4 address parse

IPv4 address parse function is commonly needed by
test applications. A common parse function harmonizes the
definition IPv4 address as a command line parameter.

Signed-off-by: Petri Savolainen <petri.savolainen@nokia.com>
Reviewed-by: Juha-Matti Tilli <juha-matti.tilli@nokia.com>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/helper/ip.c b/helper/ip.c
new file mode 100644
index 000000000..eb73e5a08
--- /dev/null
+++ b/helper/ip.c
@@ -0,0 +1,30 @@
+/* Copyright (c) 2016, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ */
+
+#include <odp/helper/ip.h>
+
+#include <stdio.h>
+#include <string.h>
+
+int odph_ipv4_addr_parse(uint32_t *ip_addr, const char *str)
+{
+	unsigned byte[ODPH_IPV4ADDR_LEN];
+	int i;
+
+	memset(byte, 0, sizeof(byte));
+
+	if (sscanf(str, "%u.%u.%u.%u",
+		   &byte[0], &byte[1], &byte[2], &byte[3]) != ODPH_IPV4ADDR_LEN)
+		return -1;
+
+	for (i = 0; i < ODPH_IPV4ADDR_LEN; i++)
+		if (byte[i] > 255)
+			return -1;
+
+	*ip_addr = byte[0] << 24 | byte[1] << 16 | byte[2] << 8 | byte[3];
+
+	return 0;
+}