22e81d7416
nf_conntrack_synproxy.h contains three inline functions. The contents of two of them are wrapped in CONFIG_NETFILTER_SYNPROXY checks and just return NULL if it is not enabled. The third does nothing if they return NULL, so wrap its contents as well. nf_ct_timeout_data is only called if CONFIG_NETFILTER_TIMEOUT is enabled. Wrap its contents in a CONFIG_NETFILTER_TIMEOUT check like the other inline functions in nf_conntrack_timeout.h. Signed-off-by: Jeremy Sowden <jeremy@azazel.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
49 lines
1,005 B
C
49 lines
1,005 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _NF_CONNTRACK_SYNPROXY_H
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#define _NF_CONNTRACK_SYNPROXY_H
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#include <net/netfilter/nf_conntrack_seqadj.h>
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#include <net/netns/generic.h>
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struct nf_conn_synproxy {
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u32 isn;
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u32 its;
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u32 tsoff;
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};
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static inline struct nf_conn_synproxy *nfct_synproxy(const struct nf_conn *ct)
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{
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#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
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return nf_ct_ext_find(ct, NF_CT_EXT_SYNPROXY);
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#else
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return NULL;
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#endif
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}
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static inline struct nf_conn_synproxy *nfct_synproxy_ext_add(struct nf_conn *ct)
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{
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#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
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return nf_ct_ext_add(ct, NF_CT_EXT_SYNPROXY, GFP_ATOMIC);
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#else
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return NULL;
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#endif
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}
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static inline bool nf_ct_add_synproxy(struct nf_conn *ct,
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const struct nf_conn *tmpl)
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{
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#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
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if (tmpl && nfct_synproxy(tmpl)) {
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if (!nfct_seqadj_ext_add(ct))
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return false;
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if (!nfct_synproxy_ext_add(ct))
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return false;
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}
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#endif
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return true;
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}
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#endif /* _NF_CONNTRACK_SYNPROXY_H */
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