[NET]: Fix sparse warnings

Of this type, mostly:

CHECK   net/ipv6/netfilter.c
net/ipv6/netfilter.c:96:12: warning: symbol 'ipv6_netfilter_init' was not declared. Should it be static?
net/ipv6/netfilter.c:101:6: warning: symbol 'ipv6_netfilter_fini' was not declared. Should it be static?

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/net.h b/include/linux/net.h
index 5f8b632ff653..4e981585a89a 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -286,5 +286,12 @@ static struct proto_ops name##_ops = {			\
 #define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
         MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
 
+#ifdef CONFIG_SYSCTL
+#include <linux/sysctl.h>
+extern ctl_table net_table[];
+extern int net_msg_cost;
+extern int net_msg_burst;
+#endif
+
 #endif /* __KERNEL__ */
 #endif  /* _LINUX_NET_H */