Add nf_osf_ttl() and nf_osf_match() into nf_osf.c to prepare for nf_tables support.
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| 1 | #include <uapi/linux/netfilter/nf_osf.h> | ||
| 2 | |||
| 3 | /* Initial window size option state machine: multiple of mss, mtu or | ||
| 4 | * plain numeric value. Can also be made as plain numeric value which | ||
| 5 | * is not a multiple of specified value. | ||
| 6 | */ | ||
| 7 | enum nf_osf_window_size_options { | ||
| 8 | OSF_WSS_PLAIN = 0, | ||
| 9 | OSF_WSS_MSS, | ||
| 10 | OSF_WSS_MTU, | ||
| 11 | OSF_WSS_MODULO, | ||
| 12 | OSF_WSS_MAX, | ||
| 13 | }; | ||
| 14 | |||
| 15 | enum osf_fmatch_states { | ||
| 16 | /* Packet does not match the fingerprint */ | ||
| 17 | FMATCH_WRONG = 0, | ||
| 18 | /* Packet matches the fingerprint */ | ||
| 19 | FMATCH_OK, | ||
| 20 | /* Options do not match the fingerprint, but header does */ | ||
| 21 | FMATCH_OPT_WRONG, | ||
| 22 | }; | ||
| 23 | |||
| 24 | bool nf_osf_match(const struct sk_buff *skb, u_int8_t family, | ||
| 25 | int hooknum, struct net_device *in, struct net_device *out, | ||
| 26 | const struct nf_osf_info *info, struct net *net, | ||
| 27 | const struct list_head *nf_osf_fingers); | ||