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#include <uapi/linux/netfilter/nf_osf.h>
/* Initial window size option state machine: multiple of mss, mtu or
* plain numeric value. Can also be made as plain numeric value which
* is not a multiple of specified value.
*/
enum nf_osf_window_size_options {
OSF_WSS_PLAIN = 0,
OSF_WSS_MSS,
OSF_WSS_MTU,
OSF_WSS_MODULO,
OSF_WSS_MAX,
};
enum osf_fmatch_states {
/* Packet does not match the fingerprint */
FMATCH_WRONG = 0,
/* Packet matches the fingerprint */
FMATCH_OK,
/* Options do not match the fingerprint, but header does */
FMATCH_OPT_WRONG,
};
struct nf_osf_finger {
struct rcu_head rcu_head;
struct list_head finger_entry;
struct nf_osf_user_finger finger;
};
bool nf_osf_match(const struct sk_buff *skb, u_int8_t family,
int hooknum, struct net_device *in, struct net_device *out,
const struct nf_osf_info *info, struct net *net,
const struct list_head *nf_osf_fingers);
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