/* SPDX-License-Identifier: GPL-2.0 */
|
#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 {
|
u32 isn;
|
u32 its;
|
u32 tsoff;
|
};
|
|
static inline struct nf_conn_synproxy *nfct_synproxy(const struct nf_conn *ct)
|
{
|
#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
|
return nf_ct_ext_find(ct, NF_CT_EXT_SYNPROXY);
|
#else
|
return NULL;
|
#endif
|
}
|
|
static inline struct nf_conn_synproxy *nfct_synproxy_ext_add(struct nf_conn *ct)
|
{
|
#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
|
return nf_ct_ext_add(ct, NF_CT_EXT_SYNPROXY, GFP_ATOMIC);
|
#else
|
return NULL;
|
#endif
|
}
|
|
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;
|
|
if (!nfct_synproxy_ext_add(ct))
|
return false;
|
}
|
#endif
|
|
return true;
|
}
|
|
#endif /* _NF_CONNTRACK_SYNPROXY_H */
|