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Man page of IPSEC_SUBNETOF
IPSEC_SUBNETOF
Section: C Library Functions (3)
Updated: 11 June 2001
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NAME
ipsec subnetof - given Internet address and subnet mask, return subnet number
ipsec hostof - given Internet address and subnet mask, return host part
ipsec broadcastof - given Internet address and subnet mask, return 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.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
- HISTORY
-
- BUGS
-
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