diff options
Diffstat (limited to 'include/net/netfilter/nf_conntrack_synproxy.h')
-rw-r--r-- | include/net/netfilter/nf_conntrack_synproxy.h | 50 |
1 files changed, 3 insertions, 47 deletions
diff --git a/include/net/netfilter/nf_conntrack_synproxy.h b/include/net/netfilter/nf_conntrack_synproxy.h index 2c7559a54092..6a3ab081e4bf 100644 --- a/include/net/netfilter/nf_conntrack_synproxy.h +++ b/include/net/netfilter/nf_conntrack_synproxy.h @@ -2,6 +2,7 @@ #ifndef _NF_CONNTRACK_SYNPROXY_H #define _NF_CONNTRACK_SYNPROXY_H +#include <net/netfilter/nf_conntrack_seqadj.h> #include <net/netns/generic.h> struct nf_conn_synproxy { @@ -31,6 +32,7 @@ static inline struct nf_conn_synproxy *nfct_synproxy_ext_add(struct nf_conn *ct) static inline bool nf_ct_add_synproxy(struct nf_conn *ct, const struct nf_conn *tmpl) { +#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY) if (tmpl && nfct_synproxy(tmpl)) { if (!nfct_seqadj_ext_add(ct)) return false; @@ -38,55 +40,9 @@ static inline bool nf_ct_add_synproxy(struct nf_conn *ct, if (!nfct_synproxy_ext_add(ct)) return false; } +#endif return true; } -struct synproxy_stats { - unsigned int syn_received; - unsigned int cookie_invalid; - unsigned int cookie_valid; - unsigned int cookie_retrans; - unsigned int conn_reopened; -}; - -struct synproxy_net { - struct nf_conn *tmpl; - struct synproxy_stats __percpu *stats; - unsigned int hook_ref4; - unsigned int hook_ref6; -}; - -extern unsigned int synproxy_net_id; -static inline struct synproxy_net *synproxy_pernet(struct net *net) -{ - return net_generic(net, synproxy_net_id); -} - -struct synproxy_options { - u8 options; - u8 wscale; - u16 mss; - u32 tsval; - u32 tsecr; -}; - -struct tcphdr; -struct xt_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, - 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 */ |