}
/* Given the IP netmask 'netmask', returns the number of bits of the IP address
- * that it specifies, that is, the number of 1-bits in 'netmask'. 'netmask'
- * must be a CIDR netmask (see ip_is_cidr()). */
+ * that it specifies, that is, the number of 1-bits in 'netmask'.
+ *
+ * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
+ * still be in the valid range but isn't otherwise meaningful. */
int
ip_count_cidr_bits(ovs_be32 netmask)
{
- assert(ip_is_cidr(netmask));
return 32 - ctz(ntohl(netmask));
}
/* Given the IPv6 netmask 'netmask', returns the number of bits of the IPv6
* address that it specifies, that is, the number of 1-bits in 'netmask'.
- * 'netmask' must be a CIDR netmask (see ipv6_is_cidr()). */
+ * 'netmask' must be a CIDR netmask (see ipv6_is_cidr()).
+ *
+ * If 'netmask' is not a CIDR netmask (see ipv6_is_cidr()), the return value
+ * will still be in the valid range but isn't otherwise meaningful. */
int
ipv6_count_cidr_bits(const struct in6_addr *netmask)
{
int count = 0;
const uint8_t *netmaskp = &netmask->s6_addr[0];
- assert(ipv6_is_cidr(netmask));
-
for (i=0; i<16; i++) {
if (netmaskp[i] == 0xff) {
count += 8;