NAME¶
ipsec_subnetof, ipsec_hostof, ipsec_broadcastof - given Internet address and
subnet mask return subnet number, host part, broadcast address
SYNOPSIS¶
#include <freeswan.h>
struct in_addr subnetof(struct in_addr addr, struct in_addr mask);
struct in_addr hostof(struct in_addr addr, struct in_addr mask);
struct in_addr broadcastof(struct in_addr addr, struct in_addr
mask);
DESCRIPTION¶
These functions are obsolete; see
ipsec_networkof(3) for their
replacements.
Subnetof takes an Internet
address and a subnet
mask and
returns the network part of the address (all in network byte order).
Hostof similarly returns the host part, and
broadcastof returns
the broadcast address (all-1s convention) for the network.
These functions are provided to hide the Internet bit-munging inside an API, in
hopes of easing the eventual transition to IPv6.
SEE ALSO¶
inet(3),
ipsec_atosubnet(3)
HISTORY¶
Written for the FreeS/WAN project by Henry Spencer.
BUGS¶
Calling functions for this is more costly than doing it yourself.
