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networking: code shrink

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function                                             old     new   delta
in_ether                                               -     124    +124
hexchar2int                                           42       -     -42
ifconfig_main                                       1237    1106    -131
ether_input                                          141       -    -141
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 0/1 up/down: 124/-314)         Total: -190 bytes

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Bartosz Golaszewski
2013-07-25 04:39:04 +02:00
committed by Denys Vlasenko
parent b855460adc
commit c19be75d57
5 changed files with 60 additions and 99 deletions
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55
networking/interface.c
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@ -722,68 +722,15 @@ static char* FAST_FUNC ether_print(unsigned char *ptr)
return buff;
}
static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap);
static const struct hwtype ether_hwtype = {
.name = "ether",
.title = "Ethernet",
.type = ARPHRD_ETHER,
.alen = ETH_ALEN,
.print = ether_print,
.input = ether_input
.input = in_ether
};
static unsigned hexchar2int(char c)
{
if (isdigit(c))
return c - '0';
c &= ~0x20; /* a -> A */
if ((unsigned)(c - 'A') <= 5)
return c - ('A' - 10);
return ~0U;
}
/* Input an Ethernet address and convert to binary. */
static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap)
{
unsigned char *ptr;
char c;
int i;
unsigned val;
sap->sa_family = ether_hwtype.type;
ptr = (unsigned char*) sap->sa_data;
i = 0;
while ((*bufp != '\0') && (i < ETH_ALEN)) {
val = hexchar2int(*bufp++) * 0x10;
if (val > 0xff) {
errno = EINVAL;
return -1;
}
c = *bufp;
if (c == ':' || c == 0)
val >>= 4;
else {
val |= hexchar2int(c);
if (val > 0xff) {
errno = EINVAL;
return -1;
}
}
if (c != 0)
bufp++;
*ptr++ = (unsigned char) val;
i++;
/* We might get a semicolon here - not required. */
if (*bufp == ':') {
bufp++;
}
}
return 0;
}
static const struct hwtype ppp_hwtype = {
.name = "ppp",
.title = "Point-to-Point Protocol",