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netfilter: nf_tables: merge exthdr expression into nft core

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before:
   text    data     bss     dec     hex filename
   5056     844       0    5900    170c net/netfilter/nft_exthdr.ko
 102456    2316     401  105173   19ad5 net/netfilter/nf_tables.ko

after:
 106410    2392     401  109203   1aa93 net/netfilter/nf_tables.ko

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2018-04-16 19:15:56 +02:00 committed by Pablo Neira Ayuso
parent ae1bc6a9f3
commit d0103158cf
5 changed files with 5 additions and 29 deletions
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1
include/net/netfilter/nf_tables_core.h
View File

@ -12,6 +12,7 @@ extern struct nft_expr_type nft_dynset_type;
extern struct nft_expr_type nft_range_type;
extern struct nft_expr_type nft_meta_type;
extern struct nft_expr_type nft_rt_type;
extern struct nft_expr_type nft_exthdr_type;
int nf_tables_core_module_init(void);
void nf_tables_core_module_exit(void);

6
net/netfilter/Kconfig
View File

@ -474,12 +474,6 @@ config NF_TABLES_NETDEV
help
This option enables support for the "netdev" table.
config NFT_EXTHDR
tristate "Netfilter nf_tables exthdr module"
help
This option adds the "exthdr" expression that you can use to match
IPv6 extension headers and tcp options.
config NFT_NUMGEN
tristate "Netfilter nf_tables number generator module"
help

3
net/netfilter/Makefile
View File

@ -76,11 +76,10 @@ obj-$(CONFIG_NF_DUP_NETDEV) += nf_dup_netdev.o
nf_tables-objs := nf_tables_core.o nf_tables_api.o nft_chain_filter.o \
nf_tables_trace.o nft_immediate.o nft_cmp.o nft_range.o \
nft_bitwise.o nft_byteorder.o nft_payload.o nft_lookup.o \
nft_dynset.o nft_meta.o nft_rt.o
nft_dynset.o nft_meta.o nft_rt.o nft_exthdr.o
obj-$(CONFIG_NF_TABLES) += nf_tables.o
obj-$(CONFIG_NFT_COMPAT) += nft_compat.o
obj-$(CONFIG_NFT_EXTHDR) += nft_exthdr.o
obj-$(CONFIG_NFT_NUMGEN) += nft_numgen.o
obj-$(CONFIG_NFT_CT) += nft_ct.o
obj-$(CONFIG_NFT_FLOW_OFFLOAD) += nft_flow_offload.o

1
net/netfilter/nf_tables_core.c
View File

@ -253,6 +253,7 @@ static struct nft_expr_type *nft_basic_types[] = {
&nft_range_type,
&nft_meta_type,
&nft_rt_type,
&nft_exthdr_type,
};
int __init nf_tables_core_module_init(void)

23
net/netfilter/nft_exthdr.c
View File

@ -10,11 +10,10 @@
#include <asm/unaligned.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/netlink.h>
#include <linux/netfilter.h>
#include <linux/netfilter/nf_tables.h>
#include <net/netfilter/nf_tables_core.h>
#include <net/netfilter/nf_tables.h>
#include <net/tcp.h>
@ -353,7 +352,6 @@ static int nft_exthdr_dump_set(struct sk_buff *skb, const struct nft_expr *expr)
return nft_exthdr_dump_common(skb, priv);
}
static struct nft_expr_type nft_exthdr_type;
static const struct nft_expr_ops nft_exthdr_ipv6_ops = {
.type = &nft_exthdr_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_exthdr)),
@ -407,27 +405,10 @@ nft_exthdr_select_ops(const struct nft_ctx *ctx,
return ERR_PTR(-EOPNOTSUPP);
}
static struct nft_expr_type nft_exthdr_type __read_mostly = {
struct nft_expr_type nft_exthdr_type __read_mostly = {
.name = "exthdr",
.select_ops = nft_exthdr_select_ops,
.policy = nft_exthdr_policy,
.maxattr = NFTA_EXTHDR_MAX,
.owner = THIS_MODULE,
};
static int __init nft_exthdr_module_init(void)
{
return nft_register_expr(&nft_exthdr_type);
}
static void __exit nft_exthdr_module_exit(void)
{
nft_unregister_expr(&nft_exthdr_type);
}
module_init(nft_exthdr_module_init);
module_exit(nft_exthdr_module_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_ALIAS_NFT_EXPR("exthdr");