netfilter: synproxy: extract SYNPROXY infrastructure from {ipt, ip6t}_SYNPROXY

Add common functions into nf_synproxy_core.c to prepare for nftables support.
The prototypes of the functions used by {ipt, ip6t}_SYNPROXY are in the new
file nf_synproxy.h

Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 11 deletions

diff --git a/include/net/netfilter/nf_conntrack_synproxy.h b/include/net/netfilter/nf_conntrack_synproxy.h
index 2c7559a54092..c5659dcf5b1a 100644
--- a/include/net/netfilter/nf_conntrack_synproxy.h
+++ b/include/net/netfilter/nf_conntrack_synproxy.h
@@ -72,21 +72,12 @@ struct synproxy_options {
 };
 
 struct tcphdr;
-struct xt_synproxy_info;
+struct nf_synproxy_info;
 bool synproxy_parse_options(const struct sk_buff *skb, unsigned int doff,
 			    const struct tcphdr *th,
 			    struct synproxy_options *opts);
-unsigned int synproxy_options_size(const struct synproxy_options *opts);
-void synproxy_build_options(struct tcphdr *th,
-			    const struct synproxy_options *opts);
 
-void synproxy_init_timestamp_cookie(const struct xt_synproxy_info *info,
+void synproxy_init_timestamp_cookie(const struct nf_synproxy_info *info,
 				    struct synproxy_options *opts);
-void synproxy_check_timestamp_cookie(struct synproxy_options *opts);
-
-unsigned int synproxy_tstamp_adjust(struct sk_buff *skb, unsigned int protoff,
-				    struct tcphdr *th, struct nf_conn *ct,
-				    enum ip_conntrack_info ctinfo,
-				    const struct nf_conn_synproxy *synproxy);
 
 #endif /* _NF_CONNTRACK_SYNPROXY_H */