summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--include/net/netfilter/nf_tables_core.h6
-rw-r--r--include/net/netfilter/nf_tproxy.h4
-rw-r--r--net/ipv4/netfilter/ip_tables.c1
-rw-r--r--net/ipv4/netfilter/nf_tproxy_ipv4.c18
-rw-r--r--net/ipv6/netfilter/ip6_tables.c1
-rw-r--r--net/ipv6/netfilter/nf_conntrack_reasm.c2
-rw-r--r--net/ipv6/netfilter/nf_tproxy_ipv6.c18
-rw-r--r--net/netfilter/Kconfig25
-rw-r--r--net/netfilter/Makefile7
-rw-r--r--net/netfilter/nf_conntrack_core.c2
-rw-r--r--net/netfilter/nf_tables_set_core.c28
-rw-r--r--net/netfilter/nft_compat.c13
-rw-r--r--net/netfilter/nft_set_bitmap.c19
-rw-r--r--net/netfilter/nft_set_hash.c29
-rw-r--r--net/netfilter/nft_set_rbtree.c19
-rw-r--r--net/netfilter/xt_TPROXY.c8
16 files changed, 98 insertions, 102 deletions
diff --git a/include/net/netfilter/nf_tables_core.h b/include/net/netfilter/nf_tables_core.h
index e0c0c2558ec4..a05134507e7b 100644
--- a/include/net/netfilter/nf_tables_core.h
+++ b/include/net/netfilter/nf_tables_core.h
@@ -65,4 +65,10 @@ extern const struct nft_expr_ops nft_payload_fast_ops;
extern struct static_key_false nft_counters_enabled;
extern struct static_key_false nft_trace_enabled;
+extern struct nft_set_type nft_set_rhash_type;
+extern struct nft_set_type nft_set_hash_type;
+extern struct nft_set_type nft_set_hash_fast_type;
+extern struct nft_set_type nft_set_rbtree_type;
+extern struct nft_set_type nft_set_bitmap_type;
+
#endif /* _NET_NF_TABLES_CORE_H */
diff --git a/include/net/netfilter/nf_tproxy.h b/include/net/netfilter/nf_tproxy.h
index 9754a50ecde9..4cc64c8446eb 100644
--- a/include/net/netfilter/nf_tproxy.h
+++ b/include/net/netfilter/nf_tproxy.h
@@ -64,7 +64,7 @@ nf_tproxy_handle_time_wait4(struct net *net, struct sk_buff *skb,
* belonging to established connections going through that one.
*/
struct sock *
-nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb, void *hp,
+nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb,
const u8 protocol,
const __be32 saddr, const __be32 daddr,
const __be16 sport, const __be16 dport,
@@ -103,7 +103,7 @@ nf_tproxy_handle_time_wait6(struct sk_buff *skb, int tproto, int thoff,
struct sock *sk);
struct sock *
-nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff, void *hp,
+nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff,
const u8 protocol,
const struct in6_addr *saddr, const struct in6_addr *daddr,
const __be16 sport, const __be16 dport,
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index ca0dad90803a..e77872c93c20 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1898,6 +1898,7 @@ static struct xt_match ipt_builtin_mt[] __read_mostly = {
.checkentry = icmp_checkentry,
.proto = IPPROTO_ICMP,
.family = NFPROTO_IPV4,
+ .me = THIS_MODULE,
},
};
diff --git a/net/ipv4/netfilter/nf_tproxy_ipv4.c b/net/ipv4/netfilter/nf_tproxy_ipv4.c
index 805e83ec3ad9..164714104965 100644
--- a/net/ipv4/netfilter/nf_tproxy_ipv4.c
+++ b/net/ipv4/netfilter/nf_tproxy_ipv4.c
@@ -37,7 +37,7 @@ nf_tproxy_handle_time_wait4(struct net *net, struct sk_buff *skb,
* to a listener socket if there's one */
struct sock *sk2;
- sk2 = nf_tproxy_get_sock_v4(net, skb, hp, iph->protocol,
+ sk2 = nf_tproxy_get_sock_v4(net, skb, iph->protocol,
iph->saddr, laddr ? laddr : iph->daddr,
hp->source, lport ? lport : hp->dest,
skb->dev, NF_TPROXY_LOOKUP_LISTENER);
@@ -71,7 +71,7 @@ __be32 nf_tproxy_laddr4(struct sk_buff *skb, __be32 user_laddr, __be32 daddr)
EXPORT_SYMBOL_GPL(nf_tproxy_laddr4);
struct sock *
-nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb, void *hp,
+nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb,
const u8 protocol,
const __be32 saddr, const __be32 daddr,
const __be16 sport, const __be16 dport,
@@ -79,16 +79,21 @@ nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb, void *hp,
const enum nf_tproxy_lookup_t lookup_type)
{
struct sock *sk;
- struct tcphdr *tcph;
switch (protocol) {
- case IPPROTO_TCP:
+ case IPPROTO_TCP: {
+ struct tcphdr _hdr, *hp;
+
+ hp = skb_header_pointer(skb, ip_hdrlen(skb),
+ sizeof(struct tcphdr), &_hdr);
+ if (hp == NULL)
+ return NULL;
+
switch (lookup_type) {
case NF_TPROXY_LOOKUP_LISTENER:
- tcph = hp;
sk = inet_lookup_listener(net, &tcp_hashinfo, skb,
ip_hdrlen(skb) +
- __tcp_hdrlen(tcph),
+ __tcp_hdrlen(hp),
saddr, sport,
daddr, dport,
in->ifindex, 0);
@@ -110,6 +115,7 @@ nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb, void *hp,
BUG();
}
break;
+ }
case IPPROTO_UDP:
sk = udp4_lib_lookup(net, saddr, sport, daddr, dport,
in->ifindex);
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 7eab959734bc..daf2e9e9193d 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1909,6 +1909,7 @@ static struct xt_match ip6t_builtin_mt[] __read_mostly = {
.checkentry = icmp6_checkentry,
.proto = IPPROTO_ICMPV6,
.family = NFPROTO_IPV6,
+ .me = THIS_MODULE,
},
};
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index a452d99c9f52..e4d9e6976d3c 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -585,6 +585,8 @@ int nf_ct_frag6_gather(struct net *net, struct sk_buff *skb, u32 user)
fq->q.meat == fq->q.len &&
nf_ct_frag6_reasm(fq, skb, dev))
ret = 0;
+ else
+ skb_dst_drop(skb);
out_unlock:
spin_unlock_bh(&fq->q.lock);
diff --git a/net/ipv6/netfilter/nf_tproxy_ipv6.c b/net/ipv6/netfilter/nf_tproxy_ipv6.c
index bf1d6c421e3b..5dfd33af6451 100644
--- a/net/ipv6/netfilter/nf_tproxy_ipv6.c
+++ b/net/ipv6/netfilter/nf_tproxy_ipv6.c
@@ -55,7 +55,7 @@ nf_tproxy_handle_time_wait6(struct sk_buff *skb, int tproto, int thoff,
* to a listener socket if there's one */
struct sock *sk2;
- sk2 = nf_tproxy_get_sock_v6(net, skb, thoff, hp, tproto,
+ sk2 = nf_tproxy_get_sock_v6(net, skb, thoff, tproto,
&iph->saddr,
nf_tproxy_laddr6(skb, laddr, &iph->daddr),
hp->source,
@@ -72,7 +72,7 @@ nf_tproxy_handle_time_wait6(struct sk_buff *skb, int tproto, int thoff,
EXPORT_SYMBOL_GPL(nf_tproxy_handle_time_wait6);
struct sock *
-nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff, void *hp,
+nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff,
const u8 protocol,
const struct in6_addr *saddr, const struct in6_addr *daddr,
const __be16 sport, const __be16 dport,
@@ -80,15 +80,20 @@ nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff, void *hp,
const enum nf_tproxy_lookup_t lookup_type)
{
struct sock *sk;
- struct tcphdr *tcph;
switch (protocol) {
- case IPPROTO_TCP:
+ case IPPROTO_TCP: {
+ struct tcphdr _hdr, *hp;
+
+ hp = skb_header_pointer(skb, thoff,
+ sizeof(struct tcphdr), &_hdr);
+ if (hp == NULL)
+ return NULL;
+
switch (lookup_type) {
case NF_TPROXY_LOOKUP_LISTENER:
- tcph = hp;
sk = inet6_lookup_listener(net, &tcp_hashinfo, skb,
- thoff + __tcp_hdrlen(tcph),
+ thoff + __tcp_hdrlen(hp),
saddr, sport,
daddr, ntohs(dport),
in->ifindex, 0);
@@ -110,6 +115,7 @@ nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff, void *hp,
BUG();
}
break;
+ }
case IPPROTO_UDP:
sk = udp6_lib_lookup(net, saddr, sport, daddr, dport,
in->ifindex);
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index dbd7d1fad277..f0a1c536ef15 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -460,6 +460,13 @@ config NF_TABLES
if NF_TABLES
+config NF_TABLES_SET
+ tristate "Netfilter nf_tables set infrastructure"
+ help
+ This option enables the nf_tables set infrastructure that allows to
+ look up for elements in a set and to build one-way mappings between
+ matchings and actions.
+
config NF_TABLES_INET
depends on IPV6
select NF_TABLES_IPV4
@@ -493,24 +500,6 @@ config NFT_FLOW_OFFLOAD
This option adds the "flow_offload" expression that you can use to
choose what flows are placed into the hardware.
-config NFT_SET_RBTREE
- tristate "Netfilter nf_tables rbtree set module"
- help
- This option adds the "rbtree" set type (Red Black tree) that is used
- to build interval-based sets.
-
-config NFT_SET_HASH
- tristate "Netfilter nf_tables hash set module"
- help
- This option adds the "hash" set type that is used to build one-way
- mappings between matchings and actions.
-
-config NFT_SET_BITMAP
- tristate "Netfilter nf_tables bitmap set module"
- help
- This option adds the "bitmap" set type that is used to build sets
- whose keys are smaller or equal to 16 bits.
-
config NFT_COUNTER
tristate "Netfilter nf_tables counter module"
help
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index 44449389e527..8a76dced974d 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -78,7 +78,11 @@ nf_tables-objs := nf_tables_core.o nf_tables_api.o nft_chain_filter.o \
nft_bitwise.o nft_byteorder.o nft_payload.o nft_lookup.o \
nft_dynset.o nft_meta.o nft_rt.o nft_exthdr.o
+nf_tables_set-objs := nf_tables_set_core.o \
+ nft_set_hash.o nft_set_bitmap.o nft_set_rbtree.o
+
obj-$(CONFIG_NF_TABLES) += nf_tables.o
+obj-$(CONFIG_NF_TABLES_SET) += nf_tables_set.o
obj-$(CONFIG_NFT_COMPAT) += nft_compat.o
obj-$(CONFIG_NFT_CONNLIMIT) += nft_connlimit.o
obj-$(CONFIG_NFT_NUMGEN) += nft_numgen.o
@@ -91,9 +95,6 @@ obj-$(CONFIG_NFT_QUEUE) += nft_queue.o
obj-$(CONFIG_NFT_QUOTA) += nft_quota.o
obj-$(CONFIG_NFT_REJECT) += nft_reject.o
obj-$(CONFIG_NFT_REJECT_INET) += nft_reject_inet.o
-obj-$(CONFIG_NFT_SET_RBTREE) += nft_set_rbtree.o
-obj-$(CONFIG_NFT_SET_HASH) += nft_set_hash.o
-obj-$(CONFIG_NFT_SET_BITMAP) += nft_set_bitmap.o
obj-$(CONFIG_NFT_COUNTER) += nft_counter.o
obj-$(CONFIG_NFT_LOG) += nft_log.o
obj-$(CONFIG_NFT_MASQ) += nft_masq.o
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 3465da2a98bd..3d5280425027 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -2043,7 +2043,7 @@ int nf_conntrack_set_hashsize(const char *val, const struct kernel_param *kp)
return -EOPNOTSUPP;
/* On boot, we can set this without any fancy locking. */
- if (!nf_conntrack_htable_size)
+ if (!nf_conntrack_hash)
return param_set_uint(val, kp);
rc = kstrtouint(val, 0, &hashsize);
diff --git a/net/netfilter/nf_tables_set_core.c b/net/netfilter/nf_tables_set_core.c
new file mode 100644
index 000000000000..814789644bd3
--- /dev/null
+++ b/net/netfilter/nf_tables_set_core.c
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <net/netfilter/nf_tables_core.h>
+
+static int __init nf_tables_set_module_init(void)
+{
+ nft_register_set(&nft_set_hash_fast_type);
+ nft_register_set(&nft_set_hash_type);
+ nft_register_set(&nft_set_rhash_type);
+ nft_register_set(&nft_set_bitmap_type);
+ nft_register_set(&nft_set_rbtree_type);
+
+ return 0;
+}
+
+static void __exit nf_tables_set_module_exit(void)
+{
+ nft_unregister_set(&nft_set_rbtree_type);
+ nft_unregister_set(&nft_set_bitmap_type);
+ nft_unregister_set(&nft_set_rhash_type);
+ nft_unregister_set(&nft_set_hash_type);
+ nft_unregister_set(&nft_set_hash_fast_type);
+}
+
+module_init(nf_tables_set_module_init);
+module_exit(nf_tables_set_module_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_NFT_SET();
diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c
index 8d1ff654e5af..32535eea51b2 100644
--- a/net/netfilter/nft_compat.c
+++ b/net/netfilter/nft_compat.c
@@ -832,10 +832,18 @@ nft_target_select_ops(const struct nft_ctx *ctx,
rev = ntohl(nla_get_be32(tb[NFTA_TARGET_REV]));
family = ctx->family;
+ if (strcmp(tg_name, XT_ERROR_TARGET) == 0 ||
+ strcmp(tg_name, XT_STANDARD_TARGET) == 0 ||
+ strcmp(tg_name, "standard") == 0)
+ return ERR_PTR(-EINVAL);
+
/* Re-use the existing target if it's already loaded. */
list_for_each_entry(nft_target, &nft_target_list, head) {
struct xt_target *target = nft_target->ops.data;
+ if (!target->target)
+ continue;
+
if (nft_target_cmp(target, tg_name, rev, family))
return &nft_target->ops;
}
@@ -844,6 +852,11 @@ nft_target_select_ops(const struct nft_ctx *ctx,
if (IS_ERR(target))
return ERR_PTR(-ENOENT);
+ if (!target->target) {
+ err = -EINVAL;
+ goto err;
+ }
+
if (target->targetsize > nla_len(tb[NFTA_TARGET_INFO])) {
err = -EINVAL;
goto err;
diff --git a/net/netfilter/nft_set_bitmap.c b/net/netfilter/nft_set_bitmap.c
index d6626e01c7ee..128bc16f52dd 100644
--- a/net/netfilter/nft_set_bitmap.c
+++ b/net/netfilter/nft_set_bitmap.c
@@ -296,7 +296,7 @@ static bool nft_bitmap_estimate(const struct nft_set_desc *desc, u32 features,
return true;
}
-static struct nft_set_type nft_bitmap_type __read_mostly = {
+struct nft_set_type nft_set_bitmap_type __read_mostly = {
.owner = THIS_MODULE,
.ops = {
.privsize = nft_bitmap_privsize,
@@ -314,20 +314,3 @@ static struct nft_set_type nft_bitmap_type __read_mostly = {
.get = nft_bitmap_get,
},
};
-
-static int __init nft_bitmap_module_init(void)
-{
- return nft_register_set(&nft_bitmap_type);
-}
-
-static void __exit nft_bitmap_module_exit(void)
-{
- nft_unregister_set(&nft_bitmap_type);
-}
-
-module_init(nft_bitmap_module_init);
-module_exit(nft_bitmap_module_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
-MODULE_ALIAS_NFT_SET();
diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c
index 6f9a1365a09f..72ef35b51cac 100644
--- a/net/netfilter/nft_set_hash.c
+++ b/net/netfilter/nft_set_hash.c
@@ -654,7 +654,7 @@ static bool nft_hash_fast_estimate(const struct nft_set_desc *desc, u32 features
return true;
}
-static struct nft_set_type nft_rhash_type __read_mostly = {
+struct nft_set_type nft_set_rhash_type __read_mostly = {
.owner = THIS_MODULE,
.features = NFT_SET_MAP | NFT_SET_OBJECT |
NFT_SET_TIMEOUT | NFT_SET_EVAL,
@@ -677,7 +677,7 @@ static struct nft_set_type nft_rhash_type __read_mostly = {
},
};
-static struct nft_set_type nft_hash_type __read_mostly = {
+struct nft_set_type nft_set_hash_type __read_mostly = {
.owner = THIS_MODULE,
.features = NFT_SET_MAP | NFT_SET_OBJECT,
.ops = {
@@ -697,7 +697,7 @@ static struct nft_set_type nft_hash_type __read_mostly = {
},
};
-static struct nft_set_type nft_hash_fast_type __read_mostly = {
+struct nft_set_type nft_set_hash_fast_type __read_mostly = {
.owner = THIS_MODULE,
.features = NFT_SET_MAP | NFT_SET_OBJECT,
.ops = {
@@ -716,26 +716,3 @@ static struct nft_set_type nft_hash_fast_type __read_mostly = {
.get = nft_hash_get,
},
};
-
-static int __init nft_hash_module_init(void)
-{
- if (nft_register_set(&nft_hash_fast_type) ||
- nft_register_set(&nft_hash_type) ||
- nft_register_set(&nft_rhash_type))
- return 1;
- return 0;
-}
-
-static void __exit nft_hash_module_exit(void)
-{
- nft_unregister_set(&nft_rhash_type);
- nft_unregister_set(&nft_hash_type);
- nft_unregister_set(&nft_hash_fast_type);
-}
-
-module_init(nft_hash_module_init);
-module_exit(nft_hash_module_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_SET();
diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c
index 7f3a9a211034..1f8f257cb518 100644
--- a/net/netfilter/nft_set_rbtree.c
+++ b/net/netfilter/nft_set_rbtree.c
@@ -462,7 +462,7 @@ static bool nft_rbtree_estimate(const struct nft_set_desc *desc, u32 features,
return true;
}
-static struct nft_set_type nft_rbtree_type __read_mostly = {
+struct nft_set_type nft_set_rbtree_type __read_mostly = {
.owner = THIS_MODULE,
.features = NFT_SET_INTERVAL | NFT_SET_MAP | NFT_SET_OBJECT | NFT_SET_TIMEOUT,
.ops = {
@@ -481,20 +481,3 @@ static struct nft_set_type nft_rbtree_type __read_mostly = {
.get = nft_rbtree_get,
},
};
-
-static int __init nft_rbtree_module_init(void)
-{
- return nft_register_set(&nft_rbtree_type);
-}
-
-static void __exit nft_rbtree_module_exit(void)
-{
- nft_unregister_set(&nft_rbtree_type);
-}
-
-module_init(nft_rbtree_module_init);
-module_exit(nft_rbtree_module_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_SET();
diff --git a/net/netfilter/xt_TPROXY.c b/net/netfilter/xt_TPROXY.c
index 58fce4e749a9..d76550a8b642 100644
--- a/net/netfilter/xt_TPROXY.c
+++ b/net/netfilter/xt_TPROXY.c
@@ -61,7 +61,7 @@ tproxy_tg4(struct net *net, struct sk_buff *skb, __be32 laddr, __be16 lport,
* addresses, this happens if the redirect already happened
* and the current packet belongs to an already established
* connection */
- sk = nf_tproxy_get_sock_v4(net, skb, hp, iph->protocol,
+ sk = nf_tproxy_get_sock_v4(net, skb, iph->protocol,
iph->saddr, iph->daddr,
hp->source, hp->dest,
skb->dev, NF_TPROXY_LOOKUP_ESTABLISHED);
@@ -77,7 +77,7 @@ tproxy_tg4(struct net *net, struct sk_buff *skb, __be32 laddr, __be16 lport,
else if (!sk)
/* no, there's no established connection, check if
* there's a listener on the redirected addr/port */
- sk = nf_tproxy_get_sock_v4(net, skb, hp, iph->protocol,
+ sk = nf_tproxy_get_sock_v4(net, skb, iph->protocol,
iph->saddr, laddr,
hp->source, lport,
skb->dev, NF_TPROXY_LOOKUP_LISTENER);
@@ -150,7 +150,7 @@ tproxy_tg6_v1(struct sk_buff *skb, const struct xt_action_param *par)
* addresses, this happens if the redirect already happened
* and the current packet belongs to an already established
* connection */
- sk = nf_tproxy_get_sock_v6(xt_net(par), skb, thoff, hp, tproto,
+ sk = nf_tproxy_get_sock_v6(xt_net(par), skb, thoff, tproto,
&iph->saddr, &iph->daddr,
hp->source, hp->dest,
xt_in(par), NF_TPROXY_LOOKUP_ESTABLISHED);
@@ -171,7 +171,7 @@ tproxy_tg6_v1(struct sk_buff *skb, const struct xt_action_param *par)
else if (!sk)
/* no there's no established connection, check if
* there's a listener on the redirected addr/port */
- sk = nf_tproxy_get_sock_v6(xt_net(par), skb, thoff, hp,
+ sk = nf_tproxy_get_sock_v6(xt_net(par), skb, thoff,
tproto, &iph->saddr, laddr,
hp->source, lport,
xt_in(par), NF_TPROXY_LOOKUP_LISTENER);
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-06 00:33:45 +0000