linux/net/handshake/handshake.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Generic netlink handshake service
 *
 * Author: Chuck Lever <[email protected]>
 *
 * Copyright (c) 2023, Oracle and/or its affiliates.
 */

#ifndef _INTERNAL_HANDSHAKE_H
#define _INTERNAL_HANDSHAKE_H

/* Per-net namespace context */
struct handshake_net { … };

enum hn_flags_bits { … };

struct handshake_proto;

/* One handshake request */
struct handshake_req { … };

enum hr_flags_bits { … };

struct genl_info;

/* Invariants for all handshake requests for one transport layer
 * security protocol
 */
struct handshake_proto { … };

enum hp_flags_bits { … };

/* alert.c */
int tls_alert_send(struct socket *sock, u8 level, u8 description);

/* netlink.c */
int handshake_genl_notify(struct net *net, const struct handshake_proto *proto,
			  gfp_t flags);
struct nlmsghdr *handshake_genl_put(struct sk_buff *msg,
				    struct genl_info *info);
struct handshake_net *handshake_pernet(struct net *net);

/* request.c */
struct handshake_req *handshake_req_alloc(const struct handshake_proto *proto,
					  gfp_t flags);
int handshake_req_hash_init(void);
void handshake_req_hash_destroy(void);
void *handshake_req_private(struct handshake_req *req);
struct handshake_req *handshake_req_hash_lookup(struct sock *sk);
struct handshake_req *handshake_req_next(struct handshake_net *hn, int class);
int handshake_req_submit(struct socket *sock, struct handshake_req *req,
			 gfp_t flags);
void handshake_complete(struct handshake_req *req, unsigned int status,
			struct genl_info *info);
bool handshake_req_cancel(struct sock *sk);

#endif /* _INTERNAL_HANDSHAKE_H */