/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _NFOSF_H
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#define _NFOSF_H
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#include <uapi/linux/netfilter/nfnetlink_osf.h>
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enum osf_fmatch_states {
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/* Packet does not match the fingerprint */
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FMATCH_WRONG = 0,
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/* Packet matches the fingerprint */
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FMATCH_OK,
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/* Options do not match the fingerprint, but header does */
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FMATCH_OPT_WRONG,
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};
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extern struct list_head nf_osf_fingers[2];
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struct nf_osf_finger {
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struct rcu_head rcu_head;
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struct list_head finger_entry;
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struct nf_osf_user_finger finger;
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};
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struct nf_osf_data {
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const char *genre;
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const char *version;
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};
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bool nf_osf_match(const struct sk_buff *skb, u_int8_t family,
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int hooknum, struct net_device *in, struct net_device *out,
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const struct nf_osf_info *info, struct net *net,
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const struct list_head *nf_osf_fingers);
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bool nf_osf_find(const struct sk_buff *skb,
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const struct list_head *nf_osf_fingers,
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const int ttl_check, struct nf_osf_data *data);
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#endif /* _NFOSF_H */
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