diff options
| -rw-r--r-- | common/cmd_pxe.c | 34 |
1 files changed, 9 insertions, 25 deletions
diff --git a/common/cmd_pxe.c b/common/cmd_pxe.c index 2dbd49c..f785c0e 100644 --- a/common/cmd_pxe.c +++ b/common/cmd_pxe.c @@ -55,37 +55,21 @@ static char *from_env(char *envvar) */ static int format_mac_pxe(char *outbuf, size_t outbuf_len) { - size_t ethaddr_len; - char *p, *ethaddr; + uchar ethaddr[6]; - ethaddr = from_env("ethaddr"); - - if (!ethaddr) - return -ENOENT; - - ethaddr_len = strlen(ethaddr); - - /* - * ethaddr_len + 4 gives room for "01-", ethaddr, and a NUL byte at - * the end. - */ - if (outbuf_len < ethaddr_len + 4) { - printf("outbuf is too small (%d < %d)\n", - outbuf_len, ethaddr_len + 4); + if (outbuf_len < 21) { + printf("outbuf is too small (%d < 21)\n", outbuf_len); return -EINVAL; } - strcpy(outbuf, "01-"); - - for (p = outbuf + 3; *ethaddr; ethaddr++, p++) { - if (*ethaddr == ':') - *p = '-'; - else - *p = tolower(*ethaddr); - } + if (!eth_getenv_enetaddr_by_index("eth", eth_get_dev_index(), + ethaddr)) + return -ENOENT; - *p = '\0'; + sprintf(outbuf, "01-%02x-%02x-%02x-%02x-%02x-%02x", + ethaddr[0], ethaddr[1], ethaddr[2], + ethaddr[3], ethaddr[4], ethaddr[5]); return 1; } |