CONFIG_NF_NAT_PROTO_DCCP is no more a tristate. When set to y, NAT
support for DCCP protocol is built-in into nf_nat.ko.
Signed-off-by: Davide Caratti <dcaratti@xxxxxxxxxx>
---
include/net/netfilter/nf_nat_l4proto.h | 3 +++
net/netfilter/Kconfig | 2 +-
net/netfilter/Makefile | 3 ++-
net/netfilter/nf_nat_core.c | 4 ++++
net/netfilter/nf_nat_proto_dccp.c | 36 +---------------------------------
5 files changed, 11 insertions(+), 37 deletions(-)
diff --git a/include/net/netfilter/nf_nat_l4proto.h b/include/net/netfilter/nf_nat_l4proto.h
index 12f4cc8..6328c18 100644
--- a/include/net/netfilter/nf_nat_l4proto.h
+++ b/include/net/netfilter/nf_nat_l4proto.h
@@ -54,6 +54,9 @@ extern const struct nf_nat_l4proto nf_nat_l4proto_udp;
extern const struct nf_nat_l4proto nf_nat_l4proto_icmp;
extern const struct nf_nat_l4proto nf_nat_l4proto_icmpv6;
extern const struct nf_nat_l4proto nf_nat_l4proto_unknown;
+#if IS_ENABLED(CONFIG_NF_NAT_PROTO_DCCP)
+extern const struct nf_nat_l4proto nf_nat_l4proto_dccp;
+#endif
bool nf_nat_l4proto_in_range(const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype,
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index e8d56d9..6813126 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -380,7 +380,7 @@ config NF_NAT_NEEDED
default y
config NF_NAT_PROTO_DCCP
- tristate
+ bool
depends on NF_NAT && NF_CT_PROTO_DCCP
default NF_NAT && NF_CT_PROTO_DCCP
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index c23c3c8..ed4cdd6 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -45,6 +45,8 @@ obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
nf_nat-y := nf_nat_core.o nf_nat_proto_unknown.o nf_nat_proto_common.o \
nf_nat_proto_udp.o nf_nat_proto_tcp.o nf_nat_helper.o
+nf_nat-$(CONFIG_NF_NAT_PROTO_DCCP) += nf_nat_proto_dccp.o
+
# generic transport layer logging
obj-$(CONFIG_NF_LOG_COMMON) += nf_log_common.o
@@ -52,7 +54,6 @@ obj-$(CONFIG_NF_NAT) += nf_nat.o
obj-$(CONFIG_NF_NAT_REDIRECT) += nf_nat_redirect.o
# NAT protocols (nf_nat)
-obj-$(CONFIG_NF_NAT_PROTO_DCCP) += nf_nat_proto_dccp.o
obj-$(CONFIG_NF_NAT_PROTO_UDPLITE) += nf_nat_proto_udplite.o
obj-$(CONFIG_NF_NAT_PROTO_SCTP) += nf_nat_proto_sctp.o
diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
index bbb8f3d..7cca9f1 100644
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -671,6 +671,10 @@ int nf_nat_l3proto_register(const struct nf_nat_l3proto *l3proto)
&nf_nat_l4proto_tcp);
RCU_INIT_POINTER(nf_nat_l4protos[l3proto->l3proto][IPPROTO_UDP],
&nf_nat_l4proto_udp);
+#if IS_ENABLED(CONFIG_NF_NAT_PROTO_DCCP)
+ RCU_INIT_POINTER(nf_nat_l4protos[l3proto->l3proto][IPPROTO_DCCP],
+ &nf_nat_l4proto_dccp);
+#endif
mutex_unlock(&nf_nat_proto_mutex);
RCU_INIT_POINTER(nf_nat_l3protos[l3proto->l3proto], l3proto);
diff --git a/net/netfilter/nf_nat_proto_dccp.c b/net/netfilter/nf_nat_proto_dccp.c
index 15c47b2..269fcd5 100644
--- a/net/netfilter/nf_nat_proto_dccp.c
+++ b/net/netfilter/nf_nat_proto_dccp.c
@@ -10,8 +10,6 @@
*/
#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
#include <linux/skbuff.h>
#include <linux/dccp.h>
@@ -73,7 +71,7 @@ dccp_manip_pkt(struct sk_buff *skb,
return true;
}
-static const struct nf_nat_l4proto nf_nat_l4proto_dccp = {
+const struct nf_nat_l4proto nf_nat_l4proto_dccp = {
.l4proto = IPPROTO_DCCP,
.manip_pkt = dccp_manip_pkt,
.in_range = nf_nat_l4proto_in_range,
@@ -82,35 +80,3 @@ static const struct nf_nat_l4proto nf_nat_l4proto_dccp = {
.nlattr_to_range = nf_nat_l4proto_nlattr_to_range,
#endif
};
-
-static int __init nf_nat_proto_dccp_init(void)
-{
- int err;
-
- err = nf_nat_l4proto_register(NFPROTO_IPV4, &nf_nat_l4proto_dccp);
- if (err < 0)
- goto err1;
- err = nf_nat_l4proto_register(NFPROTO_IPV6, &nf_nat_l4proto_dccp);
- if (err < 0)
- goto err2;
- return 0;
-
-err2:
- nf_nat_l4proto_unregister(NFPROTO_IPV4, &nf_nat_l4proto_dccp);
-err1:
- return err;
-}
-
-static void __exit nf_nat_proto_dccp_fini(void)
-{
- nf_nat_l4proto_unregister(NFPROTO_IPV6, &nf_nat_l4proto_dccp);
- nf_nat_l4proto_unregister(NFPROTO_IPV4, &nf_nat_l4proto_dccp);
-
-}
-
-module_init(nf_nat_proto_dccp_init);
-module_exit(nf_nat_proto_dccp_fini);
-
-MODULE_AUTHOR("Patrick McHardy <kaber@xxxxxxxxx>");
-MODULE_DESCRIPTION("DCCP NAT protocol helper");
-MODULE_LICENSE("GPL");
--
2.5.5
--
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