diff options
| author | Laurent Bercot <ska-skaware@skarnet.org> | 2024-07-30 13:12:52 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska@appnovation.com> | 2024-07-30 13:12:52 +0000 |
| commit | 92d5c03ef86fbd21a84d9425c456f01e6c513817 (patch) | |
| tree | c9409cd5fbe78a7d2d1d9e2468aed4cfeb402ae0 /src/libstddjb/ip4_netmask.c | |
| parent | cc57ca6ab355784f4901009184ea95a9f915ef21 (diff) | |
| download | skalibs-92d5c03ef86fbd21a84d9425c456f01e6c513817.tar.xz | |
Fix small bugs, add autodelegation for IOPAUSE_EXCEPT
Signed-off-by: Laurent Bercot <ska@appnovation.com>
Diffstat (limited to 'src/libstddjb/ip4_netmask.c')
| -rw-r--r-- | src/libstddjb/ip4_netmask.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/libstddjb/ip4_netmask.c b/src/libstddjb/ip4_netmask.c new file mode 100644 index 0000000..19f485f --- /dev/null +++ b/src/libstddjb/ip4_netmask.c @@ -0,0 +1,14 @@ +/* ISC license. */ + +#include <skalibs/uint32.h> +#include <skalibs/fmtscan.h> + +int ip4_netmask (char *ip, uint8_t netmask) +{ + uint32_t u ; + if (netmask > 32) return 0 ; + uint32_unpack_big(ip, &u) ; + u &= netmask ? ~((1u << 32 - netmask) - 1) : 0 ; + uint32_pack_big(ip, u) ; + return 1 ; +} |