Commit 023223df authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso

netfilter: nf_tables: make counter support built-in

Make counter support built-in to allow for direct call in case of
CONFIG_RETPOLINE.
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 690d5417
......@@ -7,6 +7,7 @@
extern struct nft_expr_type nft_imm_type;
extern struct nft_expr_type nft_cmp_type;
extern struct nft_expr_type nft_counter_type;
extern struct nft_expr_type nft_lookup_type;
extern struct nft_expr_type nft_bitwise_type;
extern struct nft_expr_type nft_byteorder_type;
......@@ -21,6 +22,7 @@ extern struct nft_expr_type nft_last_type;
#ifdef CONFIG_NETWORK_SECMARK
extern struct nft_object_type nft_secmark_obj_type;
#endif
extern struct nft_object_type nft_counter_obj_type;
int nf_tables_core_module_init(void);
void nf_tables_core_module_exit(void);
......@@ -120,6 +122,8 @@ bool nft_pipapo_lookup(const struct net *net, const struct nft_set *set,
bool nft_pipapo_avx2_lookup(const struct net *net, const struct nft_set *set,
const u32 *key, const struct nft_set_ext **ext);
void nft_counter_init_seqcount(void);
struct nft_expr;
struct nft_regs;
struct nft_pktinfo;
......@@ -143,4 +147,6 @@ void nft_dynset_eval(const struct nft_expr *expr,
struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_rt_get_eval(const struct nft_expr *expr,
struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_counter_eval(const struct nft_expr *expr, struct nft_regs *regs,
const struct nft_pktinfo *pkt);
#endif /* _NET_NF_TABLES_CORE_H */
......@@ -515,12 +515,6 @@ 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_COUNTER
tristate "Netfilter nf_tables counter module"
help
This option adds the "counter" expression that you can use to
include packet and byte counters in a rule.
config NFT_CONNLIMIT
tristate "Netfilter nf_tables connlimit module"
depends on NF_CONNTRACK
......
......@@ -75,7 +75,7 @@ nf_tables-objs := nf_tables_core.o nf_tables_api.o nft_chain_filter.o \
nf_tables_trace.o nft_immediate.o nft_cmp.o nft_range.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 nft_last.o \
nft_chain_route.o nf_tables_offload.o \
nft_counter.o nft_chain_route.o nf_tables_offload.o \
nft_set_hash.o nft_set_bitmap.o nft_set_rbtree.o \
nft_set_pipapo.o
......@@ -100,7 +100,6 @@ obj-$(CONFIG_NFT_REJECT) += nft_reject.o
obj-$(CONFIG_NFT_REJECT_INET) += nft_reject_inet.o
obj-$(CONFIG_NFT_REJECT_NETDEV) += nft_reject_netdev.o
obj-$(CONFIG_NFT_TUNNEL) += nft_tunnel.o
obj-$(CONFIG_NFT_COUNTER) += nft_counter.o
obj-$(CONFIG_NFT_LOG) += nft_log.o
obj-$(CONFIG_NFT_MASQ) += nft_masq.o
obj-$(CONFIG_NFT_REDIR) += nft_redir.o
......
......@@ -169,6 +169,7 @@ static void expr_call_ops_eval(const struct nft_expr *expr,
X(e, nft_payload_eval);
X(e, nft_cmp_eval);
X(e, nft_counter_eval);
X(e, nft_meta_get_eval);
X(e, nft_lookup_eval);
X(e, nft_range_eval);
......@@ -292,18 +293,22 @@ static struct nft_expr_type *nft_basic_types[] = {
&nft_rt_type,
&nft_exthdr_type,
&nft_last_type,
&nft_counter_type,
};
static struct nft_object_type *nft_basic_objects[] = {
#ifdef CONFIG_NETWORK_SECMARK
&nft_secmark_obj_type,
#endif
&nft_counter_obj_type,
};
int __init nf_tables_core_module_init(void)
{
int err, i, j = 0;
nft_counter_init_seqcount();
for (i = 0; i < ARRAY_SIZE(nft_basic_objects); i++) {
err = nft_register_obj(nft_basic_objects[i]);
if (err)
......
......@@ -13,6 +13,7 @@
#include <linux/netfilter.h>
#include <linux/netfilter/nf_tables.h>
#include <net/netfilter/nf_tables.h>
#include <net/netfilter/nf_tables_core.h>
#include <net/netfilter/nf_tables_offload.h>
struct nft_counter {
......@@ -174,7 +175,7 @@ static const struct nla_policy nft_counter_policy[NFTA_COUNTER_MAX + 1] = {
[NFTA_COUNTER_BYTES] = { .type = NLA_U64 },
};
static struct nft_object_type nft_counter_obj_type;
struct nft_object_type nft_counter_obj_type;
static const struct nft_object_ops nft_counter_obj_ops = {
.type = &nft_counter_obj_type,
.size = sizeof(struct nft_counter_percpu_priv),
......@@ -184,7 +185,7 @@ static const struct nft_object_ops nft_counter_obj_ops = {
.dump = nft_counter_obj_dump,
};
static struct nft_object_type nft_counter_obj_type __read_mostly = {
struct nft_object_type nft_counter_obj_type __read_mostly = {
.type = NFT_OBJECT_COUNTER,
.ops = &nft_counter_obj_ops,
.maxattr = NFTA_COUNTER_MAX,
......@@ -192,8 +193,7 @@ static struct nft_object_type nft_counter_obj_type __read_mostly = {
.owner = THIS_MODULE,
};
static void nft_counter_eval(const struct nft_expr *expr,
struct nft_regs *regs,
void nft_counter_eval(const struct nft_expr *expr, struct nft_regs *regs,
const struct nft_pktinfo *pkt)
{
struct nft_counter_percpu_priv *priv = nft_expr_priv(expr);
......@@ -275,7 +275,15 @@ static void nft_counter_offload_stats(struct nft_expr *expr,
preempt_enable();
}
static struct nft_expr_type nft_counter_type;
void nft_counter_init_seqcount(void)
{
int cpu;
for_each_possible_cpu(cpu)
seqcount_init(per_cpu_ptr(&nft_counter_seq, cpu));
}
struct nft_expr_type nft_counter_type;
static const struct nft_expr_ops nft_counter_ops = {
.type = &nft_counter_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_counter_percpu_priv)),
......@@ -289,7 +297,7 @@ static const struct nft_expr_ops nft_counter_ops = {
.offload_stats = nft_counter_offload_stats,
};
static struct nft_expr_type nft_counter_type __read_mostly = {
struct nft_expr_type nft_counter_type __read_mostly = {
.name = "counter",
.ops = &nft_counter_ops,
.policy = nft_counter_policy,
......@@ -297,39 +305,3 @@ static struct nft_expr_type nft_counter_type __read_mostly = {
.flags = NFT_EXPR_STATEFUL,
.owner = THIS_MODULE,
};
static int __init nft_counter_module_init(void)
{
int cpu, err;
for_each_possible_cpu(cpu)
seqcount_init(per_cpu_ptr(&nft_counter_seq, cpu));
err = nft_register_obj(&nft_counter_obj_type);
if (err < 0)
return err;
err = nft_register_expr(&nft_counter_type);
if (err < 0)
goto err1;
return 0;
err1:
nft_unregister_obj(&nft_counter_obj_type);
return err;
}
static void __exit nft_counter_module_exit(void)
{
nft_unregister_expr(&nft_counter_type);
nft_unregister_obj(&nft_counter_obj_type);
}
module_init(nft_counter_module_init);
module_exit(nft_counter_module_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_ALIAS_NFT_EXPR("counter");
MODULE_ALIAS_NFT_OBJ(NFT_OBJECT_COUNTER);
MODULE_DESCRIPTION("nftables counter rule support");
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