eipconv, parseip, parseether, myipaddr, myetheraddr, maskip, equivip - Internet protocol
int eipconv(void *o, int f1, int f2, int f3, int chr)
int parseip(uchar *ipaddr, char *str)
int parseether(uchar *eaddr, char *str)
int myipaddr(uchar *ipaddr, char *net)
int myetheraddr(uchar *eaddr, char *net)
void maskip(uchar *from, uchar *mask, uchar *to)
int equivip(uchar *ipaddr1, uchar *ipaddr2)
These routines are used by Internet Protocol (IP) programs to manipulate IP and Ethernet
addresses. IP addresses are stored as a string of 4 unsigned chars, Ethernet addresses as
6 unsigned chars. The string representation of IP addresses is (up to) 4 decimal integers
from 0 to 255 separated by periods. The string representation of Ethernet addresses is
exactly 12 hexadecimal digits.
Eipconv is a print(2) formatter for Ethernet (verb E) and Internet protocol (verb I)
Parseip converts a string pointed to by str to a 4-byte IP address starting at ipaddr.
Myipaddr reads the IP address string from file /net/1/local and parses it into ipaddr.
Both routines return a negative number on errors.
Parseether converts a string pointed to by str to a 6 byte Ethernet address starting at
eaddr. Myetheraddr reads the Ethernet address string from file net/1/stats and parses it
into eaddr. Both routines return a negative number on errors.
Maskip places the bit-wise AND of the IP addresses pointed to by its first two arguments
into the buffer pointed to by the third.
Equivip returns non-zero if the IP addresses pointed to by its two arguments are equal.