str: Add str2mac helper function

Add function to convert a string in the format xx:xx:xx:xx:xx:xx to a
MAC address byte array.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
[tk: Add len parameter and error out on too short buffers]
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/str.h b/str.h
index 3ffb2b9..7879af6 100644
--- a/str.h
+++ b/str.h
@@ -1,6 +1,8 @@
 #ifndef STR_H
 #define STR_H
 
+#include <stdlib.h>
+
 #include "built_in.h"
 
 extern size_t strlcpy(char *dest, const char *src, size_t size);
@@ -11,5 +13,6 @@ extern noinline void *xmemset(void *s, int c, size_t n);
 extern char *argv2str(int startind, int argc, char **argv);
 extern char **argv_insert(char **argv, size_t *count, const char *str);
 extern void argv_free(char **argv);
+extern int str2mac(const char *str, uint8_t *mac, size_t len);
 
 #endif /* STR_H */