netfilter: ipset: hash:net,iface type introduced

The hash:net,iface type makes possible to store network address and
interface name pairs in a set. It's mostly suitable for egress
and ingress filtering. Examples:

        # ipset create test hash:net,iface
        # ipset add test 192.168.0.0/16,eth0
        # ipset add test 192.168.0.0/24,eth1

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Jozsef Kadlecsik 2011-06-16 19:00:48 +02:00 • committed by Patrick McHardy
commit e385357a2f
5 changed files with 784 additions and 0 deletions

View file

@ -105,6 +105,7 @@ enum {
IPSET_ATTR_IP2,
IPSET_ATTR_CIDR2,
IPSET_ATTR_IP2_TO,
IPSET_ATTR_IFACE,
__IPSET_ATTR_ADT_MAX,
};
#define IPSET_ATTR_ADT_MAX (__IPSET_ATTR_ADT_MAX - 1)
@ -153,6 +154,8 @@ enum ipset_cmd_flags {
enum ipset_cadt_flags {
IPSET_FLAG_BIT_BEFORE = 0,
IPSET_FLAG_BEFORE = (1 << IPSET_FLAG_BIT_BEFORE),
IPSET_FLAG_BIT_PHYSDEV = 1,
IPSET_FLAG_PHYSDEV = (1 << IPSET_FLAG_BIT_PHYSDEV),
};
/* Commands with settype-specific attributes */
@ -212,6 +215,8 @@ enum ip_set_feature {
IPSET_TYPE_IP2 = (1 << IPSET_TYPE_IP2_FLAG),
IPSET_TYPE_NAME_FLAG = 4,
IPSET_TYPE_NAME = (1 << IPSET_TYPE_NAME_FLAG),
IPSET_TYPE_IFACE_FLAG = 5,
IPSET_TYPE_IFACE = (1 << IPSET_TYPE_IFACE_FLAG),
/* Strictly speaking not a feature, but a flag for dumping:
* this settype must be dumped last */
IPSET_DUMP_LAST_FLAG = 7,

View file

@ -63,6 +63,9 @@ struct ip_set_hash {
#ifdef IP_SET_HASH_WITH_NETMASK
u8 netmask; /* netmask value for subnets to store */
#endif
#ifdef IP_SET_HASH_WITH_RBTREE
struct rb_root rbtree;
#endif
#ifdef IP_SET_HASH_WITH_NETS
struct ip_set_hash_nets nets[0]; /* book-keeping of prefixes */
#endif
@ -200,6 +203,9 @@ ip_set_hash_destroy(struct ip_set *set)
del_timer_sync(&h->gc);
ahash_destroy(h->table);
#ifdef IP_SET_HASH_WITH_RBTREE
rbtree_destroy(&h->rbtree);
#endif
kfree(h);
set->data = NULL;