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Diffstat (limited to 'src/libfreeswan/subnetof.3')
| -rw-r--r-- | src/libfreeswan/subnetof.3 | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/libfreeswan/subnetof.3 b/src/libfreeswan/subnetof.3 new file mode 100644 index 000000000..1911e499f --- /dev/null +++ b/src/libfreeswan/subnetof.3 @@ -0,0 +1,47 @@ +.TH IPSEC_SUBNETOF 3 "11 June 2001" +.\" RCSID $Id: subnetof.3,v 1.1 2004/03/15 20:35:26 as Exp $ +.SH NAME +ipsec subnetof \- given Internet address and subnet mask, return subnet number +.br +ipsec hostof \- given Internet address and subnet mask, return host part +.br +ipsec broadcastof \- given Internet address and subnet mask, return broadcast address +.SH SYNOPSIS +.B "#include <freeswan.h> +.sp +.B "struct in_addr subnetof(struct in_addr addr," +.ti +1c +.B "struct in_addr mask);" +.br +.B "struct in_addr hostof(struct in_addr addr," +.ti +1c +.B "struct in_addr mask);" +.br +.B "struct in_addr broadcastof(struct in_addr addr," +.ti +1c +.B "struct in_addr mask);" +.SH DESCRIPTION +These functions are obsolete; see +.IR ipsec_networkof (3) +for their replacements. +.PP +.I Subnetof +takes an Internet +.I address +and a subnet +.I mask +and returns the network part of the address +(all in network byte order). +.I Hostof +similarly returns the host part, and +.I broadcastof +returns the broadcast address (all-1s convention) for the network. +.PP +These functions are provided to hide the Internet bit-munging inside +an API, in hopes of easing the eventual transition to IPv6. +.SH SEE ALSO +inet(3), ipsec_atosubnet(3) +.SH HISTORY +Written for the FreeS/WAN project by Henry Spencer. +.SH BUGS +Calling functions for this is more costly than doing it yourself. |