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netfilter: ipset: Make possible to test elements marked with nomatch

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Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Jozsef Kadlecsik 2013-04-08 21:51:25 +02:00 committed by Pablo Neira Ayuso
parent 37fe066098
commit 43c56e595b
5 changed files with 40 additions and 24 deletions
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8
include/linux/netfilter/ipset/ip_set.h
View File

@ -200,6 +200,14 @@ ip_set_eexist(int ret, u32 flags)
return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST);
}
/* Match elements marked with nomatch */
static inline bool
ip_set_enomatch(int ret, u32 flags, enum ipset_adt adt)
{
return adt == IPSET_TEST &&
ret == -ENOTEMPTY && ((flags >> 16) & IPSET_FLAG_NOMATCH);
}
/* Check the NLA_F_NET_BYTEORDER flag */
static inline bool
ip_set_attr_netorder(struct nlattr *tb[], int type)

14
net/netfilter/ipset/ip_set_hash_ipportnet.c
View File

@ -279,10 +279,10 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (cadt_flags << 16);
flags |= (IPSET_FLAG_NOMATCH << 16);
}
with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
@ -292,7 +292,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
data.ip = htonl(ip);
data.ip2 = htonl(ip2_from & ip_set_hostmask(data.cidr + 1));
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
ip_to = ip;
@ -610,15 +611,16 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (cadt_flags << 16);
flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
port = ntohs(data.port);

14
net/netfilter/ipset/ip_set_hash_net.c
View File

@ -225,16 +225,17 @@ hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (cadt_flags << 16);
flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !tb[IPSET_ATTR_IP_TO]) {
data.ip = htonl(ip & ip_set_hostmask(data.cidr));
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
ip_to = ip;
@ -466,15 +467,16 @@ hash_net6_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (cadt_flags << 16);
flags |= (IPSET_FLAG_NOMATCH << 16);
}
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
/* Create hash:ip type of sets */

14
net/netfilter/ipset/ip_set_hash_netiface.c
View File

@ -396,13 +396,14 @@ hash_netiface4_uadt(struct ip_set *set, struct nlattr *tb[],
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_PHYSDEV)
data.physdev = 1;
if (adt == IPSET_ADD && (cadt_flags & IPSET_FLAG_NOMATCH))
flags |= (cadt_flags << 16);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !tb[IPSET_ATTR_IP_TO]) {
data.ip = htonl(ip & ip_set_hostmask(data.cidr));
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
if (tb[IPSET_ATTR_IP_TO]) {
@ -704,13 +705,14 @@ hash_netiface6_uadt(struct ip_set *set, struct nlattr *tb[],
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_PHYSDEV)
data.physdev = 1;
if (adt == IPSET_ADD && (cadt_flags & IPSET_FLAG_NOMATCH))
flags |= (cadt_flags << 16);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (IPSET_FLAG_NOMATCH << 16);
}
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
/* Create hash:ip type of sets */

14
net/netfilter/ipset/ip_set_hash_netport.c
View File

@ -272,16 +272,17 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (cadt_flags << 16);
flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !(with_ports || tb[IPSET_ATTR_IP_TO])) {
data.ip = htonl(ip & ip_set_hostmask(data.cidr + 1));
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
port = port_to = ntohs(data.port);
@ -561,15 +562,16 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (cadt_flags << 16);
flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
return ip_set_enomatch(ret, flags, adt) ? 1 :
ip_set_eexist(ret, flags) ? 0 : ret;
}
port = ntohs(data.port);