linux/net/ipv6/tcp_ao.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * INET		An implementation of the TCP Authentication Option (TCP-AO).
 *		See RFC5925.
 *
 * Authors:	Dmitry Safonov <[email protected]>
 *		Francesco Ruggeri <[email protected]>
 *		Salam Noureddine <[email protected]>
 */
#include <crypto/hash.h>
#include <linux/tcp.h>

#include <net/tcp.h>
#include <net/ipv6.h>

static int tcp_v6_ao_calc_key(struct tcp_ao_key *mkt, u8 *key,
			      const struct in6_addr *saddr,
			      const struct in6_addr *daddr,
			      __be16 sport, __be16 dport,
			      __be32 sisn, __be32 disn)
{ … }

int tcp_v6_ao_calc_key_skb(struct tcp_ao_key *mkt, u8 *key,
			   const struct sk_buff *skb,
			   __be32 sisn, __be32 disn)
{ … }

int tcp_v6_ao_calc_key_sk(struct tcp_ao_key *mkt, u8 *key,
			  const struct sock *sk, __be32 sisn,
			  __be32 disn, bool send)
{ … }

int tcp_v6_ao_calc_key_rsk(struct tcp_ao_key *mkt, u8 *key,
			   struct request_sock *req)
{ … }

struct tcp_ao_key *tcp_v6_ao_lookup(const struct sock *sk,
				    struct sock *addr_sk,
				    int sndid, int rcvid)
{ … }

struct tcp_ao_key *tcp_v6_ao_lookup_rsk(const struct sock *sk,
					struct request_sock *req,
					int sndid, int rcvid)
{ … }

int tcp_v6_ao_hash_pseudoheader(struct tcp_sigpool *hp,
				const struct in6_addr *daddr,
				const struct in6_addr *saddr, int nbytes)
{ … }

int tcp_v6_ao_hash_skb(char *ao_hash, struct tcp_ao_key *key,
		       const struct sock *sk, const struct sk_buff *skb,
		       const u8 *tkey, int hash_offset, u32 sne)
{ … }

int tcp_v6_parse_ao(struct sock *sk, int cmd,
		    sockptr_t optval, int optlen)
{ … }

int tcp_v6_ao_synack_hash(char *ao_hash, struct tcp_ao_key *ao_key,
			  struct request_sock *req, const struct sk_buff *skb,
			  int hash_offset, u32 sne)
{ … }