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path: root/net/netfilter/ipset/ip_set_hash_ipportnet.c
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Diffstat (limited to 'net/netfilter/ipset/ip_set_hash_ipportnet.c')
-rw-r--r--net/netfilter/ipset/ip_set_hash_ipportnet.c147
1 files changed, 106 insertions, 41 deletions
diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c
index 64199b4e93c9..5d05e6969862 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c
@@ -41,12 +41,19 @@ hash_ipportnet_same_set(const struct ip_set *a, const struct ip_set *b);
/* The type variant functions: IPv4 */
+/* We squeeze the "nomatch" flag into cidr: we don't support cidr == 0
+ * However this way we have to store internally cidr - 1,
+ * dancing back and forth.
+ */
+#define IP_SET_HASH_WITH_NETS_PACKED
+
/* Member elements without timeout */
struct hash_ipportnet4_elem {
__be32 ip;
__be32 ip2;
__be16 port;
- u8 cidr;
+ u8 cidr:7;
+ u8 nomatch:1;
u8 proto;
};
@@ -55,7 +62,8 @@ struct hash_ipportnet4_telem {
__be32 ip;
__be32 ip2;
__be16 port;
- u8 cidr;
+ u8 cidr:7;
+ u8 nomatch:1;
u8 proto;
unsigned long timeout;
};
@@ -86,10 +94,22 @@ hash_ipportnet4_data_copy(struct hash_ipportnet4_elem *dst,
}
static inline void
+hash_ipportnet4_data_flags(struct hash_ipportnet4_elem *dst, u32 flags)
+{
+ dst->nomatch = !!(flags & IPSET_FLAG_NOMATCH);
+}
+
+static inline bool
+hash_ipportnet4_data_match(const struct hash_ipportnet4_elem *elem)
+{
+ return !elem->nomatch;
+}
+
+static inline void
hash_ipportnet4_data_netmask(struct hash_ipportnet4_elem *elem, u8 cidr)
{
elem->ip2 &= ip_set_netmask(cidr);
- elem->cidr = cidr;
+ elem->cidr = cidr - 1;
}
static inline void
@@ -102,11 +122,15 @@ static bool
hash_ipportnet4_data_list(struct sk_buff *skb,
const struct hash_ipportnet4_elem *data)
{
+ u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
+
NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP, data->ip);
NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP2, data->ip2);
NLA_PUT_NET16(skb, IPSET_ATTR_PORT, data->port);
- NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
+ NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr + 1);
NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
+ if (flags)
+ NLA_PUT_NET32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags));
return 0;
nla_put_failure:
@@ -119,14 +143,17 @@ hash_ipportnet4_data_tlist(struct sk_buff *skb,
{
const struct hash_ipportnet4_telem *tdata =
(const struct hash_ipportnet4_telem *)data;
+ u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP, tdata->ip);
NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP2, tdata->ip2);
NLA_PUT_NET16(skb, IPSET_ATTR_PORT, tdata->port);
- NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
+ NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr + 1);
NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT,
htonl(ip_set_timeout_get(tdata->timeout)));
+ if (flags)
+ NLA_PUT_NET32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags));
return 0;
@@ -158,13 +185,11 @@ hash_ipportnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_ipportnet4_elem data = {
- .cidr = h->nets[0].cidr ? h->nets[0].cidr : HOST_MASK
+ .cidr = h->nets[0].cidr ? h->nets[0].cidr - 1 : HOST_MASK - 1
};
- if (data.cidr == 0)
- return -EINVAL;
if (adt == IPSET_TEST)
- data.cidr = HOST_MASK;
+ data.cidr = HOST_MASK - 1;
if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
&data.port, &data.proto))
@@ -172,7 +197,7 @@ hash_ipportnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip);
ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &data.ip2);
- data.ip2 &= ip_set_netmask(data.cidr);
+ data.ip2 &= ip_set_netmask(data.cidr + 1);
return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags);
}
@@ -183,17 +208,19 @@ hash_ipportnet4_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_ipportnet4_elem data = { .cidr = HOST_MASK };
+ struct hash_ipportnet4_elem data = { .cidr = HOST_MASK - 1 };
u32 ip, ip_to = 0, p = 0, port, port_to;
u32 ip2_from = 0, ip2_to, ip2_last, ip2;
u32 timeout = h->timeout;
bool with_ports = false;
+ u8 cidr;
int ret;
if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
- !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
+ !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
+ !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
return -IPSET_ERR_PROTOCOL;
if (tb[IPSET_ATTR_LINENO])
@@ -208,9 +235,10 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
return ret;
if (tb[IPSET_ATTR_CIDR2]) {
- data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
- if (!data.cidr)
+ cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
+ if (!cidr || cidr > HOST_MASK)
return -IPSET_ERR_INVALID_CIDR;
+ data.cidr = cidr - 1;
}
if (tb[IPSET_ATTR_PORT])
@@ -236,12 +264,18 @@ 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) {
+ u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
+ if (cadt_flags & IPSET_FLAG_NOMATCH)
+ flags |= (cadt_flags << 16);
+ }
+
with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
if (adt == IPSET_TEST ||
!(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));
+ 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;
}
@@ -275,7 +309,7 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
if (ip2_from + UINT_MAX == ip2_to)
return -IPSET_ERR_HASH_RANGE;
} else {
- ip_set_mask_from_to(ip2_from, ip2_to, data.cidr);
+ ip_set_mask_from_to(ip2_from, ip2_to, data.cidr + 1);
}
if (retried)
@@ -290,7 +324,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
while (!after(ip2, ip2_to)) {
data.ip2 = htonl(ip2);
ip2_last = ip_set_range_to_cidr(ip2, ip2_to,
- &data.cidr);
+ &cidr);
+ data.cidr = cidr - 1;
ret = adtfn(set, &data, timeout, flags);
if (ret && !ip_set_eexist(ret, flags))
@@ -321,7 +356,8 @@ struct hash_ipportnet6_elem {
union nf_inet_addr ip;
union nf_inet_addr ip2;
__be16 port;
- u8 cidr;
+ u8 cidr:7;
+ u8 nomatch:1;
u8 proto;
};
@@ -329,7 +365,8 @@ struct hash_ipportnet6_telem {
union nf_inet_addr ip;
union nf_inet_addr ip2;
__be16 port;
- u8 cidr;
+ u8 cidr:7;
+ u8 nomatch:1;
u8 proto;
unsigned long timeout;
};
@@ -360,6 +397,18 @@ hash_ipportnet6_data_copy(struct hash_ipportnet6_elem *dst,
}
static inline void
+hash_ipportnet6_data_flags(struct hash_ipportnet6_elem *dst, u32 flags)
+{
+ dst->nomatch = !!(flags & IPSET_FLAG_NOMATCH);
+}
+
+static inline bool
+hash_ipportnet6_data_match(const struct hash_ipportnet6_elem *elem)
+{
+ return !elem->nomatch;
+}
+
+static inline void
hash_ipportnet6_data_zero_out(struct hash_ipportnet6_elem *elem)
{
elem->proto = 0;
@@ -378,18 +427,22 @@ static inline void
hash_ipportnet6_data_netmask(struct hash_ipportnet6_elem *elem, u8 cidr)
{
ip6_netmask(&elem->ip2, cidr);
- elem->cidr = cidr;
+ elem->cidr = cidr - 1;
}
static bool
hash_ipportnet6_data_list(struct sk_buff *skb,
const struct hash_ipportnet6_elem *data)
{
+ u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
+
NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP, &data->ip);
NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP2, &data->ip2);
NLA_PUT_NET16(skb, IPSET_ATTR_PORT, data->port);
- NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
+ NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr + 1);
NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
+ if (flags)
+ NLA_PUT_NET32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags));
return 0;
nla_put_failure:
@@ -402,14 +455,17 @@ hash_ipportnet6_data_tlist(struct sk_buff *skb,
{
const struct hash_ipportnet6_telem *e =
(const struct hash_ipportnet6_telem *)data;
+ u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP, &e->ip);
NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP2, &data->ip2);
NLA_PUT_NET16(skb, IPSET_ATTR_PORT, data->port);
- NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
+ NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr + 1);
NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT,
htonl(ip_set_timeout_get(e->timeout)));
+ if (flags)
+ NLA_PUT_NET32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags));
return 0;
nla_put_failure:
@@ -438,13 +494,11 @@ hash_ipportnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_ipportnet6_elem data = {
- .cidr = h->nets[0].cidr ? h->nets[0].cidr : HOST_MASK
+ .cidr = h->nets[0].cidr ? h->nets[0].cidr - 1 : HOST_MASK - 1
};
- if (data.cidr == 0)
- return -EINVAL;
if (adt == IPSET_TEST)
- data.cidr = HOST_MASK;
+ data.cidr = HOST_MASK - 1;
if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
&data.port, &data.proto))
@@ -452,7 +506,7 @@ hash_ipportnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip.in6);
ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &data.ip2.in6);
- ip6_netmask(&data.ip2, data.cidr);
+ ip6_netmask(&data.ip2, data.cidr + 1);
return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags);
}
@@ -463,16 +517,18 @@ hash_ipportnet6_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_ipportnet6_elem data = { .cidr = HOST_MASK };
+ struct hash_ipportnet6_elem data = { .cidr = HOST_MASK - 1 };
u32 port, port_to;
u32 timeout = h->timeout;
bool with_ports = false;
+ u8 cidr;
int ret;
if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
+ !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) ||
tb[IPSET_ATTR_IP_TO] ||
tb[IPSET_ATTR_CIDR]))
return -IPSET_ERR_PROTOCOL;
@@ -490,13 +546,14 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
if (ret)
return ret;
- if (tb[IPSET_ATTR_CIDR2])
- data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
-
- if (!data.cidr)
- return -IPSET_ERR_INVALID_CIDR;
+ if (tb[IPSET_ATTR_CIDR2]) {
+ cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
+ if (!cidr || cidr > HOST_MASK)
+ return -IPSET_ERR_INVALID_CIDR;
+ data.cidr = cidr - 1;
+ }
- ip6_netmask(&data.ip2, data.cidr);
+ ip6_netmask(&data.ip2, data.cidr + 1);
if (tb[IPSET_ATTR_PORT])
data.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
@@ -521,6 +578,12 @@ 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) {
+ u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
+ if (cadt_flags & IPSET_FLAG_NOMATCH)
+ flags |= (cadt_flags << 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;
@@ -554,7 +617,7 @@ hash_ipportnet_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM;
u8 hbits;
- if (!(set->family == AF_INET || set->family == AF_INET6))
+ if (!(set->family == NFPROTO_IPV4 || set->family == NFPROTO_IPV6))
return -IPSET_ERR_INVALID_FAMILY;
if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) ||
@@ -573,7 +636,7 @@ hash_ipportnet_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
h = kzalloc(sizeof(*h)
+ sizeof(struct ip_set_hash_nets)
- * (set->family == AF_INET ? 32 : 128), GFP_KERNEL);
+ * (set->family == NFPROTO_IPV4 ? 32 : 128), GFP_KERNEL);
if (!h)
return -ENOMEM;
@@ -596,16 +659,16 @@ hash_ipportnet_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
if (tb[IPSET_ATTR_TIMEOUT]) {
h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
- set->variant = set->family == AF_INET
+ set->variant = set->family == NFPROTO_IPV4
? &hash_ipportnet4_tvariant
: &hash_ipportnet6_tvariant;
- if (set->family == AF_INET)
+ if (set->family == NFPROTO_IPV4)
hash_ipportnet4_gc_init(set);
else
hash_ipportnet6_gc_init(set);
} else {
- set->variant = set->family == AF_INET
+ set->variant = set->family == NFPROTO_IPV4
? &hash_ipportnet4_variant : &hash_ipportnet6_variant;
}
@@ -621,10 +684,11 @@ static struct ip_set_type hash_ipportnet_type __read_mostly = {
.protocol = IPSET_PROTOCOL,
.features = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2,
.dimension = IPSET_DIM_THREE,
- .family = AF_UNSPEC,
+ .family = NFPROTO_UNSPEC,
.revision_min = 0,
/* 1 SCTP and UDPLITE support added */
- .revision_max = 2, /* Range as input support for IPv4 added */
+ /* 2 Range as input support for IPv4 added */
+ .revision_max = 3, /* nomatch flag support added */
.create = hash_ipportnet_create,
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
@@ -643,6 +707,7 @@ static struct ip_set_type hash_ipportnet_type __read_mostly = {
[IPSET_ATTR_CIDR] = { .type = NLA_U8 },
[IPSET_ATTR_CIDR2] = { .type = NLA_U8 },
[IPSET_ATTR_PROTO] = { .type = NLA_U8 },
+ [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
[IPSET_ATTR_LINENO] = { .type = NLA_U32 },
},
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.