Simplify this infrastructure by replacing it by direction call.
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
v2: remove .checksum from nf_tables_bridge. Reported by kbuild robot.
include/linux/netfilter.h | 19 +++----------------
include/linux/netfilter_ipv6.h | 13 +++++++++++--
net/bridge/netfilter/nf_tables_bridge.c | 7 -------
net/ipv4/netfilter.c | 1 -
net/ipv6/netfilter.c | 1 -
net/netfilter/Makefile | 2 +-
net/netfilter/utils.c | 23 +++++++++++++++++++++++
7 files changed, 38 insertions(+), 28 deletions(-)
create mode 100644 net/netfilter/utils.c
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index fcb391a0fbd9..3ae4cfb92b54 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -311,8 +311,6 @@ struct nf_queue_entry;
struct nf_afinfo {
unsigned short family;
- __sum16 (*checksum)(struct sk_buff *skb, unsigned int hook,
- unsigned int dataoff, u_int8_t protocol);
__sum16 (*checksum_partial)(struct sk_buff *skb,
unsigned int hook,
unsigned int dataoff,
@@ -333,20 +331,9 @@ static inline const struct nf_afinfo *nf_get_afinfo(unsigned short family)
return rcu_dereference(nf_afinfo[family]);
}
-static inline __sum16
-nf_checksum(struct sk_buff *skb, unsigned int hook, unsigned int dataoff,
- u_int8_t protocol, unsigned short family)
-{
- const struct nf_afinfo *afinfo;
- __sum16 csum = 0;
-
- rcu_read_lock();
- afinfo = nf_get_afinfo(family);
- if (afinfo)
- csum = afinfo->checksum(skb, hook, dataoff, protocol);
- rcu_read_unlock();
- return csum;
-}
+__sum16 nf_checksum(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, u_int8_t protocol,
+ unsigned short family);
static inline __sum16
nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
diff --git a/include/linux/netfilter_ipv6.h b/include/linux/netfilter_ipv6.h
index 47c6b04c28c0..ea8c99e5112a 100644
--- a/include/linux/netfilter_ipv6.h
+++ b/include/linux/netfilter_ipv6.h
@@ -21,10 +21,19 @@ struct nf_ipv6_ops {
int (*output)(struct net *, struct sock *, struct sk_buff *));
};
-#ifdef CONFIG_NETFILTER
-int ip6_route_me_harder(struct net *net, struct sk_buff *skb);
+#if defined(CONFIG_IPV6)
__sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol);
+#else
+static inline __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, u_int8_t protocol)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_NETFILTER
+int ip6_route_me_harder(struct net *net, struct sk_buff *skb);
int ipv6_netfilter_init(void);
void ipv6_netfilter_fini(void);
diff --git a/net/bridge/netfilter/nf_tables_bridge.c b/net/bridge/netfilter/nf_tables_bridge.c
index 74260ffec74d..b850c17f02f5 100644
--- a/net/bridge/netfilter/nf_tables_bridge.c
+++ b/net/bridge/netfilter/nf_tables_bridge.c
@@ -106,12 +106,6 @@ static int nf_br_reroute(struct net *net, struct sk_buff *skb,
return 0;
}
-static __sum16 nf_br_checksum(struct sk_buff *skb, unsigned int hook,
- unsigned int dataoff, u_int8_t protocol)
-{
- return 0;
-}
-
static __sum16 nf_br_checksum_partial(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, unsigned int len,
u_int8_t protocol)
@@ -127,7 +121,6 @@ static int nf_br_route(struct net *net, struct dst_entry **dst,
static const struct nf_afinfo nf_br_afinfo = {
.family = AF_BRIDGE,
- .checksum = nf_br_checksum,
.checksum_partial = nf_br_checksum_partial,
.route = nf_br_route,
.saveroute = nf_br_saveroute,
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index c0cc6aa8cfaa..2f7ffefd2732 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -188,7 +188,6 @@ static int nf_ip_route(struct net *net, struct dst_entry **dst,
static const struct nf_afinfo nf_ip_afinfo = {
.family = AF_INET,
- .checksum = nf_ip_checksum,
.checksum_partial = nf_ip_checksum_partial,
.route = nf_ip_route,
.saveroute = nf_ip_saveroute,
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index 39970e212ad5..a24810ecc432 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -197,7 +197,6 @@ static const struct nf_ipv6_ops ipv6ops = {
static const struct nf_afinfo nf_ip6_afinfo = {
.family = AF_INET6,
- .checksum = nf_ip6_checksum,
.checksum_partial = nf_ip6_checksum_partial,
.route = nf_ip6_route,
.saveroute = nf_ip6_saveroute,
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index 490a55e7166d..eec0c3b72926 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-netfilter-objs := core.o nf_log.o nf_queue.o nf_sockopt.o
+netfilter-objs := core.o nf_log.o nf_queue.o nf_sockopt.o utils.o
nf_conntrack-y := nf_conntrack_core.o nf_conntrack_standalone.o nf_conntrack_expect.o nf_conntrack_helper.o nf_conntrack_proto.o nf_conntrack_l3proto_generic.o nf_conntrack_proto_generic.o nf_conntrack_proto_tcp.o nf_conntrack_proto_udp.o nf_conntrack_extend.o nf_conntrack_acct.o nf_conntrack_seqadj.o
nf_conntrack-$(CONFIG_NF_CONNTRACK_TIMEOUT) += nf_conntrack_timeout.o
diff --git a/net/netfilter/utils.c b/net/netfilter/utils.c
new file mode 100644
index 000000000000..92a51e507fab
--- /dev/null
+++ b/net/netfilter/utils.c
@@ -0,0 +1,23 @@
+#include <linux/kernel.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv4.h>
+#include <linux/netfilter_ipv6.h>
+
+__sum16 nf_checksum(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, u_int8_t protocol,
+ unsigned short family)
+{
+ __sum16 csum = 0;
+
+ switch (family) {
+ case AF_INET:
+ csum = nf_ip_checksum(skb, hook, dataoff, protocol);
+ break;
+ case AF_INET6:
+ csum = nf_ip6_checksum(skb, hook, dataoff, protocol);
+ break;
+ }
+
+ return csum;
+}
+EXPORT_SYMBOL_GPL(nf_checksum);
--
2.11.0
--
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