diff options
author | Fernando Fernandez Mancera <ffmancera@riseup.net> | 2019-06-07 02:36:07 +0200 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-06-17 17:12:55 +0200 |
commit | d7f9b2f18eaef74b4f948c7e24e3a8f796f0c90d (patch) | |
tree | b5e8c6e8c56f990473d4011cf65698082fa021b7 /include/net/netfilter/nf_synproxy.h | |
parent | 3006a5224f15cf68edc4878799ac6d6089861518 (diff) |
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>
Diffstat (limited to 'include/net/netfilter/nf_synproxy.h')
-rw-r--r-- | include/net/netfilter/nf_synproxy.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_synproxy.h b/include/net/netfilter/nf_synproxy.h new file mode 100644 index 000000000000..3e8b3f03b687 --- /dev/null +++ b/include/net/netfilter/nf_synproxy.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _NF_SYNPROXY_SHARED_H +#define _NF_SYNPROXY_SHARED_H + +#include <linux/module.h> +#include <linux/skbuff.h> +#include <net/ip6_checksum.h> +#include <net/ip6_route.h> +#include <net/tcp.h> + +#include <net/netfilter/nf_conntrack_seqadj.h> +#include <net/netfilter/nf_conntrack_synproxy.h> + +void synproxy_send_client_synack(struct net *net, const struct sk_buff *skb, + const struct tcphdr *th, + const struct synproxy_options *opts); + +bool synproxy_recv_client_ack(struct net *net, + const struct sk_buff *skb, + const struct tcphdr *th, + struct synproxy_options *opts, u32 recv_seq); + +unsigned int ipv4_synproxy_hook(void *priv, struct sk_buff *skb, + const struct nf_hook_state *nhs); +int nf_synproxy_ipv4_init(struct synproxy_net *snet, struct net *net); +void nf_synproxy_ipv4_fini(struct synproxy_net *snet, struct net *net); + +#if IS_ENABLED(CONFIG_IPV6) +void synproxy_send_client_synack_ipv6(struct net *net, + const struct sk_buff *skb, + const struct tcphdr *th, + const struct synproxy_options *opts); + +bool synproxy_recv_client_ack_ipv6(struct net *net, const struct sk_buff *skb, + const struct tcphdr *th, + struct synproxy_options *opts, u32 recv_seq); + +unsigned int ipv6_synproxy_hook(void *priv, struct sk_buff *skb, + const struct nf_hook_state *nhs); +int nf_synproxy_ipv6_init(struct synproxy_net *snet, struct net *net); +void nf_synproxy_ipv6_fini(struct synproxy_net *snet, struct net *net); +#endif /* CONFIG_IPV6 */ + +#endif /* _NF_SYNPROXY_SHARED_H */ |