diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/cidr.c | 12 |
1 files changed, 9 insertions, 3 deletions
@@ -24,6 +24,9 @@ /* returns the netmask in host byte order */ uint32_t ipv4_cidr2mask_host(uint8_t cidr) { + if (cidr == 0) + return 0; + return 0xFFFFFFFF << (32 - cidr); } @@ -42,10 +45,13 @@ void ipv6_cidr2mask_host(uint8_t cidr, uint32_t *res) res[i] = 0xFFFFFFFF; cidr -= 32; } - res[i] = 0xFFFFFFFF << (32 - cidr); - for (j = i+1; j < 4; j++) { + if (cidr == 0) + res[i] = 0; + else + res[i] = 0xFFFFFFFF << (32 - cidr); + + for (j = i + 1; j < 4; j++) res[j] = 0; - } } void ipv6_cidr2mask_net(uint8_t cidr, uint32_t *res) |