linux/net/handshake/alert.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Handle the TLS Alert protocol
 *
 * Author: Chuck Lever <[email protected]>
 *
 * Copyright (c) 2023, Oracle and/or its affiliates.
 */

#include <linux/types.h>
#include <linux/socket.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/inet.h>

#include <net/sock.h>
#include <net/handshake.h>
#include <net/tls.h>
#include <net/tls_prot.h>

#include "handshake.h"

#include <trace/events/handshake.h>

/**
 * tls_alert_send - send a TLS Alert on a kTLS socket
 * @sock: open kTLS socket to send on
 * @level: TLS Alert level
 * @description: TLS Alert description
 *
 * Returns zero on success or a negative errno.
 */
int tls_alert_send(struct socket *sock, u8 level, u8 description)
{ … }

/**
 * tls_get_record_type - Look for TLS RECORD_TYPE information
 * @sk: socket (for IP address information)
 * @cmsg: incoming message to be parsed
 *
 * Returns zero or a TLS_RECORD_TYPE value.
 */
u8 tls_get_record_type(const struct sock *sk, const struct cmsghdr *cmsg)
{ … }
EXPORT_SYMBOL(…);

/**
 * tls_alert_recv - Parse TLS Alert messages
 * @sk: socket (for IP address information)
 * @msg: incoming message to be parsed
 * @level: OUT - TLS AlertLevel value
 * @description: OUT - TLS AlertDescription value
 *
 */
void tls_alert_recv(const struct sock *sk, const struct msghdr *msg,
		    u8 *level, u8 *description)
{ … }
EXPORT_SYMBOL(…);