/*
* Calculate a netmask of length 'l' for address family 'af' and
* store it in 'n'.
* Returns 0 on success, -1 on failure.
*/
static int
addr_hostmask(int af, u_int l, struct xaddr *n)
{
if (addr_netmask(af, l, n) == -1 || addr_invert(n) == -1)
return (-1);
return (0);
}
int addr_host_to_all0s(struct xaddr* a, int masklen) {
struct xaddr tmp_mask;
if (addr_netmask(a->af, masklen, &tmp_mask) == -1)
return (-1);
if (addr_and(a, a, &tmp_mask) == -1)
return (-1);
return (0);
}
int addr_netmatch(const struct xaddr* host, const struct xaddr* net, int masklen) {
struct xaddr tmp_mask, tmp_result;
if (host->af != net->af)
return(-1);
if (addr_netmask(host->af, masklen, &tmp_mask) == -1)
return (-1);
if (addr_and(&tmp_result, host, &tmp_mask) == -1)
return (-1);
return (addr_cmp(&tmp_result, net));
}
int addr_host_is_all1s(const struct xaddr* a, int masklen) {
struct xaddr tmp_addr, tmp_mask, tmp_result;
rte_memcpy(&tmp_addr, a, sizeof(tmp_addr));
if (addr_netmask(a->af, masklen, &tmp_mask) == -1)
return (-1);
if (addr_or(&tmp_result, &tmp_addr, &tmp_mask) == -1)
return (-1);
if (addr_invert(&tmp_result) == -1)
return (-1);
return (addr_is_all0s(&tmp_result));
}