LXR linux/include/linux/netfilter/nfnetlink

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _NFOSF_H
   3#define _NFOSF_H
   4
   5#include <uapi/linux/netfilter/nfnetlink_osf.h>
   6
   7enum osf_fmatch_states {
   8        /* Packet does not match the fingerprint */
   9        FMATCH_WRONG = 0,
  10        /* Packet matches the fingerprint */
  11        FMATCH_OK,
  12        /* Options do not match the fingerprint, but header does */
  13        FMATCH_OPT_WRONG,
  14};
  15
  16extern struct list_head nf_osf_fingers[2];
  17
  18struct nf_osf_finger {
  19        struct rcu_head                 rcu_head;
  20        struct list_head                finger_entry;
  21        struct nf_osf_user_finger       finger;
  22};
  23
  24struct nf_osf_data {
  25        const char *genre;
  26        const char *version;
  27};
  28
  29bool nf_osf_match(const struct sk_buff *skb, u_int8_t family,
  30                  int hooknum, struct net_device *in, struct net_device *out,
  31                  const struct nf_osf_info *info, struct net *net,
  32                  const struct list_head *nf_osf_fingers);
  33
  34bool nf_osf_find(const struct sk_buff *skb,
  35                 const struct list_head *nf_osf_fingers,
  36                 const int ttl_check, struct nf_osf_data *data);
  37
  38#endif /* _NFOSF_H */
  39