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authorJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2011-06-16 18:52:41 +0200
committerPatrick McHardy <kaber@trash.net>2011-06-16 18:52:41 +0200
commitd0d9e0a5a8db05b2179c2ffb25d1c2850cce3c8e (patch)
tree16be0164e378226c7603838ded9bcf3fd4041692 /net/netfilter/ipset
parentf1e00b39797944bf25addaf543839feeb25fbdc5 (diff)
netfilter: ipset: support range for IPv4 at adding/deleting elements for hash:*net* types
The range internally is converted to the network(s) equal to the range. Example: # ipset new test hash:net # ipset add test 10.2.0.0-10.2.1.12 # ipset list test Name: test Type: hash:net Header: family inet hashsize 1024 maxelem 65536 Size in memory: 16888 References: 0 Members: 10.2.1.12 10.2.1.0/29 10.2.0.0/24 10.2.1.8/30 Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/netfilter/ipset')
-rw-r--r--net/netfilter/ipset/ip_set_hash_ipportnet.c69
-rw-r--r--net/netfilter/ipset/ip_set_hash_net.c51
-rw-r--r--net/netfilter/ipset/ip_set_hash_netport.c69
-rw-r--r--net/netfilter/ipset/pfxlen.c21
4 files changed, 156 insertions, 54 deletions
diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c
index 0b54fdea9794..ef068b03ec1a 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c
@@ -146,6 +146,7 @@ hash_ipportnet4_data_next(struct ip_set_hash *h,
{
h->next.ip = ntohl(d->ip);
h->next.port = ntohs(d->port);
+ h->next.ip2 = ntohl(d->ip2);
}
static int
@@ -181,6 +182,7 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_ipportnet4_elem data = { .cidr = HOST_MASK };
u32 ip, ip_to, p = 0, port, port_to;
+ u32 ip2_from = 0, ip2_to, ip2_last, ip2;
u32 timeout = h->timeout;
bool with_ports = false;
int ret;
@@ -194,21 +196,19 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
- ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &data.ip);
+ ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
if (ret)
return ret;
- ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP2], &data.ip2);
+ ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from);
if (ret)
return ret;
- if (tb[IPSET_ATTR_CIDR2])
+ if (tb[IPSET_ATTR_CIDR2]) {
data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
-
- if (!data.cidr)
- return -IPSET_ERR_INVALID_CIDR;
-
- data.ip2 &= ip_set_netmask(data.cidr);
+ if (!data.cidr)
+ return -IPSET_ERR_INVALID_CIDR;
+ }
if (tb[IPSET_ATTR_PORT])
data.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
@@ -233,14 +233,16 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
+ with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
if (adt == IPSET_TEST ||
- !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR] ||
- tb[IPSET_ATTR_PORT_TO])) {
+ !(tb[IPSET_ATTR_CIDR] || tb[IPSET_ATTR_IP_TO] || with_ports ||
+ tb[IPSET_ATTR_IP2_TO])) {
+ data.ip = htonl(ip);
+ data.ip2 = htonl(ip2_from & ip_set_hostmask(data.cidr));
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
}
- ip = ntohl(data.ip);
if (tb[IPSET_ATTR_IP_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
if (ret)
@@ -254,29 +256,48 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
return -IPSET_ERR_INVALID_CIDR;
ip &= ip_set_hostmask(cidr);
ip_to = ip | ~ip_set_hostmask(cidr);
- } else
- ip_to = ip;
+ }
port_to = port = ntohs(data.port);
- if (with_ports && tb[IPSET_ATTR_PORT_TO]) {
+ if (tb[IPSET_ATTR_PORT_TO]) {
port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
if (port > port_to)
swap(port, port_to);
}
+ if (tb[IPSET_ATTR_IP2_TO]) {
+ ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
+ if (ret)
+ return ret;
+ if (ip2_from > ip2_to)
+ swap(ip2_from, ip2_to);
+ if (ip2_from + UINT_MAX == ip2_to)
+ return -IPSET_ERR_HASH_RANGE;
+ } else {
+ ip2_from &= ip_set_hostmask(data.cidr);
+ ip2_to = ip2_from | ~ip_set_hostmask(data.cidr);
+ }
if (retried)
ip = h->next.ip;
for (; !before(ip_to, ip); ip++) {
+ data.ip = htonl(ip);
p = retried && ip == h->next.ip ? h->next.port : port;
for (; p <= port_to; p++) {
- data.ip = htonl(ip);
data.port = htons(p);
- ret = adtfn(set, &data, timeout, flags);
-
- if (ret && !ip_set_eexist(ret, flags))
- return ret;
- else
- ret = 0;
+ ip2 = retried && ip == h->next.ip && p == h->next.port
+ ? h->next.ip2 : ip2_from;
+ while (!after(ip2, ip2_to)) {
+ data.ip2 = htonl(ip2);
+ ip2_last = ip_set_range_to_cidr(ip2, ip2_to,
+ &data.cidr);
+ ret = adtfn(set, &data, timeout, flags);
+
+ if (ret && !ip_set_eexist(ret, flags))
+ return ret;
+ else
+ ret = 0;
+ ip2 = ip2_last + 1;
+ }
}
}
return ret;
@@ -451,6 +472,8 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
tb[IPSET_ATTR_IP_TO] ||
tb[IPSET_ATTR_CIDR]))
return -IPSET_ERR_PROTOCOL;
+ if (unlikely(tb[IPSET_ATTR_IP_TO]))
+ return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
@@ -596,7 +619,8 @@ static struct ip_set_type hash_ipportnet_type __read_mostly = {
.dimension = IPSET_DIM_THREE,
.family = AF_UNSPEC,
.revision_min = 0,
- .revision_max = 1, /* SCTP and UDPLITE support added */
+ /* 1 SCTP and UDPLITE support added */
+ .revision_max = 2, /* Range as input support for IPv4 added */
.create = hash_ipportnet_create,
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
@@ -609,6 +633,7 @@ static struct ip_set_type hash_ipportnet_type __read_mostly = {
[IPSET_ATTR_IP] = { .type = NLA_NESTED },
[IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
[IPSET_ATTR_IP2] = { .type = NLA_NESTED },
+ [IPSET_ATTR_IP2_TO] = { .type = NLA_NESTED },
[IPSET_ATTR_PORT] = { .type = NLA_U16 },
[IPSET_ATTR_PORT_TO] = { .type = NLA_U16 },
[IPSET_ATTR_CIDR] = { .type = NLA_U8 },
diff --git a/net/netfilter/ipset/ip_set_hash_net.c b/net/netfilter/ipset/ip_set_hash_net.c
index 360cf5b3ddf6..8d3c3efbbf17 100644
--- a/net/netfilter/ipset/ip_set_hash_net.c
+++ b/net/netfilter/ipset/ip_set_hash_net.c
@@ -129,6 +129,7 @@ static inline void
hash_net4_data_next(struct ip_set_hash *h,
const struct hash_net4_elem *d)
{
+ h->next.ip = ntohl(d->ip);
}
static int
@@ -158,6 +159,7 @@ hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_net4_elem data = { .cidr = HOST_MASK };
u32 timeout = h->timeout;
+ u32 ip = 0, ip_to, last;
int ret;
if (unlikely(!tb[IPSET_ATTR_IP] ||
@@ -167,27 +169,51 @@ hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
- ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &data.ip);
+ ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
if (ret)
return ret;
- if (tb[IPSET_ATTR_CIDR])
+ if (tb[IPSET_ATTR_CIDR]) {
data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
-
- if (!data.cidr)
- return -IPSET_ERR_INVALID_CIDR;
-
- data.ip &= ip_set_netmask(data.cidr);
+ if (!data.cidr)
+ return -IPSET_ERR_INVALID_CIDR;
+ }
if (tb[IPSET_ATTR_TIMEOUT]) {
if (!with_timeout(h->timeout))
return -IPSET_ERR_TIMEOUT;
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
+
+ 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;
+ }
- ret = adtfn(set, &data, timeout, flags);
-
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ ip_to = ip;
+ if (tb[IPSET_ATTR_IP_TO]) {
+ ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
+ if (ret)
+ return ret;
+ if (ip_to < ip)
+ swap(ip, ip_to);
+ if (ip + UINT_MAX == ip_to)
+ return -IPSET_ERR_HASH_RANGE;
+ }
+ if (retried)
+ ip = h->next.ip;
+ while (!after(ip, ip_to)) {
+ data.ip = htonl(ip);
+ last = ip_set_range_to_cidr(ip, ip_to, &data.cidr);
+ ret = adtfn(set, &data, timeout, flags);
+ if (ret && !ip_set_eexist(ret, flags))
+ return ret;
+ else
+ ret = 0;
+ ip = last + 1;
+ }
+ return ret;
}
static bool
@@ -334,6 +360,8 @@ hash_net6_uadt(struct ip_set *set, struct nlattr *tb[],
if (unlikely(!tb[IPSET_ATTR_IP] ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
return -IPSET_ERR_PROTOCOL;
+ if (unlikely(tb[IPSET_ATTR_IP_TO]))
+ return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
@@ -438,7 +466,7 @@ static struct ip_set_type hash_net_type __read_mostly = {
.dimension = IPSET_DIM_ONE,
.family = AF_UNSPEC,
.revision_min = 0,
- .revision_max = 0,
+ .revision_max = 1, /* Range as input support for IPv4 added */
.create = hash_net_create,
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
@@ -449,6 +477,7 @@ static struct ip_set_type hash_net_type __read_mostly = {
},
.adt_policy = {
[IPSET_ATTR_IP] = { .type = NLA_NESTED },
+ [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
[IPSET_ATTR_CIDR] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
},
diff --git a/net/netfilter/ipset/ip_set_hash_netport.c b/net/netfilter/ipset/ip_set_hash_netport.c
index 09f807fa24ac..300103096879 100644
--- a/net/netfilter/ipset/ip_set_hash_netport.c
+++ b/net/netfilter/ipset/ip_set_hash_netport.c
@@ -141,6 +141,7 @@ static inline void
hash_netport4_data_next(struct ip_set_hash *h,
const struct hash_netport4_elem *d)
{
+ h->next.ip = ntohl(d->ip);
h->next.port = ntohs(d->port);
}
@@ -175,7 +176,7 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_netport4_elem data = { .cidr = HOST_MASK };
- u32 port, port_to;
+ u32 port, port_to, p = 0, ip = 0, ip_to, last;
u32 timeout = h->timeout;
bool with_ports = false;
int ret;
@@ -189,15 +190,15 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
- ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &data.ip);
+ ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
if (ret)
return ret;
- if (tb[IPSET_ATTR_CIDR])
+ if (tb[IPSET_ATTR_CIDR]) {
data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
- if (!data.cidr)
- return -IPSET_ERR_INVALID_CIDR;
- data.ip &= ip_set_netmask(data.cidr);
+ if (!data.cidr)
+ return -IPSET_ERR_INVALID_CIDR;
+ }
if (tb[IPSET_ATTR_PORT])
data.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
@@ -222,26 +223,48 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
- if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
+ with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
+ if (adt == IPSET_TEST || !(with_ports || 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;
}
- port = ntohs(data.port);
- port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
- if (port > port_to)
- swap(port, port_to);
+ port = port_to = ntohs(data.port);
+ if (tb[IPSET_ATTR_PORT_TO]) {
+ port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
+ if (port_to < port)
+ swap(port, port_to);
+ }
+ if (tb[IPSET_ATTR_IP_TO]) {
+ ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
+ if (ret)
+ return ret;
+ if (ip_to < ip)
+ swap(ip, ip_to);
+ if (ip + UINT_MAX == ip_to)
+ return -IPSET_ERR_HASH_RANGE;
+ } else {
+ ip &= ip_set_hostmask(data.cidr);
+ ip_to = ip | ~ip_set_hostmask(data.cidr);
+ }
if (retried)
- port = h->next.port;
- for (; port <= port_to; port++) {
- data.port = htons(port);
- ret = adtfn(set, &data, timeout, flags);
-
- if (ret && !ip_set_eexist(ret, flags))
- return ret;
- else
- ret = 0;
+ ip = h->next.ip;
+ while (!after(ip, ip_to)) {
+ data.ip = htonl(ip);
+ last = ip_set_range_to_cidr(ip, ip_to, &data.cidr);
+ p = retried && ip == h->next.ip ? h->next.port : port;
+ for (; p <= port_to; p++) {
+ data.port = htons(p);
+ ret = adtfn(set, &data, timeout, flags);
+
+ if (ret && !ip_set_eexist(ret, flags))
+ return ret;
+ else
+ ret = 0;
+ }
+ ip = last + 1;
}
return ret;
}
@@ -407,6 +430,8 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
!ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
return -IPSET_ERR_PROTOCOL;
+ if (unlikely(tb[IPSET_ATTR_IP_TO]))
+ return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
@@ -545,7 +570,8 @@ static struct ip_set_type hash_netport_type __read_mostly = {
.dimension = IPSET_DIM_TWO,
.family = AF_UNSPEC,
.revision_min = 0,
- .revision_max = 1, /* SCTP and UDPLITE support added */
+ /* 1 SCTP and UDPLITE support added */
+ .revision_max = 2, /* Range as input support for IPv4 added */
.create = hash_netport_create,
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
@@ -557,6 +583,7 @@ static struct ip_set_type hash_netport_type __read_mostly = {
},
.adt_policy = {
[IPSET_ATTR_IP] = { .type = NLA_NESTED },
+ [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
[IPSET_ATTR_PORT] = { .type = NLA_U16 },
[IPSET_ATTR_PORT_TO] = { .type = NLA_U16 },
[IPSET_ATTR_PROTO] = { .type = NLA_U8 },
diff --git a/net/netfilter/ipset/pfxlen.c b/net/netfilter/ipset/pfxlen.c
index 23f8c8162214..b57a85673de7 100644
--- a/net/netfilter/ipset/pfxlen.c
+++ b/net/netfilter/ipset/pfxlen.c
@@ -289,3 +289,24 @@ const union nf_inet_addr ip_set_hostmask_map[] = {
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF),
};
EXPORT_SYMBOL_GPL(ip_set_hostmask_map);
+
+/* Find the largest network which matches the range from left, in host order. */
+u32
+ip_set_range_to_cidr(u32 from, u32 to, u8 *cidr)
+{
+ u32 last;
+ u8 i;
+
+ for (i = 1; i < 32; i++) {
+ if ((from & ip_set_hostmask(i)) != from)
+ continue;
+ last = from | ~ip_set_hostmask(i);
+ if (!after(last, to)) {
+ *cidr = i;
+ return last;
+ }
+ }
+ *cidr = 32;
+ return from;
+}
+EXPORT_SYMBOL_GPL(ip_set_range_to_cidr);