diff options
| -rw-r--r-- | include/net.h | 5 | ||||
| -rw-r--r-- | net/eth_common.c | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/include/net.h b/include/net.h index 61568f6..c3bfb63 100644 --- a/include/net.h +++ b/include/net.h @@ -40,6 +40,11 @@ /* ARP hardware address length */ #define ARP_HLEN 6 +/* + * The size of a MAC address in string form, each digit requires two chars + * and five separator characters to form '00:00:00:00:00:00'. + */ +#define ARP_HLEN_ASCII (ARP_HLEN * 2) + (ARP_HLEN - 1) /* IPv4 addresses are always 32 bits in size */ struct in_addr { diff --git a/net/eth_common.c b/net/eth_common.c index 2880901..e9d3c66 100644 --- a/net/eth_common.c +++ b/net/eth_common.c @@ -32,7 +32,7 @@ int eth_getenv_enetaddr(const char *name, uchar *enetaddr) int eth_setenv_enetaddr(const char *name, const uchar *enetaddr) { - char buf[20]; + char buf[ARP_HLEN_ASCII + 1]; sprintf(buf, "%pM", enetaddr); |