the alternative function for inet_aton

[ahmad javadi]

hi
I use " inet_aton"  function in the kernel socket programming but i have the
following warrning:
"crypto.c:63: warning: implicit declaration of function 'inet_aton'
crypto.c:63: warning: nested extern declaration of  'inet_aton'
"
this function required that "<arpa/inet,h>" be included but this folder did
not exit in the my freebsd.
Please help me to find solution or to use alternative function.
thanks