static int arp_ignore(struct in_device *in_dev, __be32 sip, __be32 tip)
{
int scope;
switch (IN_DEV_ARP_IGNORE(in_dev)) {
case 0: /* Reply, the tip is already validated */
return 0;
case 1: /* Reply only if tip is configured on the incoming interface */
sip = 0;
scope = RT_SCOPE_HOST;
break;
case 2: /*
* Reply only if tip is configured on the incoming interface
* and is in same subnet as sip
*/
scope = RT_SCOPE_HOST;
break;
case 3: /* Do not reply for scope host addresses */
sip = 0;
scope = RT_SCOPE_LINK;
break;
case 4: /* Reserved */
case 5:
case 6:
case 7:
return 0;
case 8: /* Do not reply */
return 1;
default:
return 0;
}
return !inet_confirm_addr(in_dev, sip, tip, scope);
}
static int arp_ignore(struct in_device *in_dev, __be32 sip, __be32 tip)
{
int scope;
switch (IN_DEV_ARP_IGNORE(in_dev)) {
case 0:
return 0;
case 1:
sip = 0;
scope = RT_SCOPE_HOST;
break;
case 2:
scope = RT_SCOPE_HOST;
break;
case 3:
sip = 0;
scope = RT_SCOPE_LINK;
break;
case 4:
case 5:
case 6:
case 7:
return 0;
case 8:
return 1;
default:
return 0;
}
return !inet_confirm_addr(in_dev, sip, tip, scope);
}