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net: Add debug function to print MAC address

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Change-Id: I32ca7a4f005d73be7c8d4d28a7a6fbd19c01dd2e
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen 2016-05-10 09:30:10 +03:00
commit fa7ed053bf
1 changed files with 67 additions and 0 deletions
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67
net/yaip/net_private.h
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@ -25,3 +25,70 @@
extern void net_nbuf_init(void);
extern int net_if_init(void);
extern void net_context_init(void);
#if NET_DEBUG > 0
static inline char *net_byte_to_hex(uint8_t *ptr, uint8_t byte, char base,
bool pad)
{
int i, val;
for (i = 0, val = (byte & 0xf0) >> 4; i < 2; i++, val = byte & 0x0f) {
if (i == 0 && !pad && !val) {
continue;
}
if (val < 10) {
*ptr++ = (char) (val + '0');
} else {
*ptr++ = (char) (val - 10 + base);
}
}
*ptr = '\0';
return ptr;
}
static inline char *net_sprint_ll_addr_buf(uint8_t *ll, uint8_t ll_len,
char *buf, int buflen)
{
uint8_t i, len, blen;
char *ptr = buf;
switch (ll_len) {
case 8:
len = 8;
break;
case 6:
len = 6;
break;
default:
len = 6;
break;
}
for (i = 0, blen = buflen; i < len && blen > 0; i++) {
ptr = net_byte_to_hex(ptr, ll[i], 'A', true);
*ptr++ = ':';
blen -= 3;
}
if (!(ptr - buf)) {
return NULL;
}
*(ptr - 1) = '\0';
return buf;
}
static inline char *net_sprint_ll_addr(uint8_t *ll, uint8_t ll_len)
{
static char buf[sizeof("xx:xx:xx:xx:xx:xx:xx:xx")];
return net_sprint_ll_addr_buf(ll, ll_len, (char *)buf, sizeof(buf));
}
#else /* NET_DEBUG */
static inline char *net_sprint_ll_addr(uint8_t *ll, uint8_t ll_len)
{
return NULL;
}
#endif /* NET_DEBUG */