xref: /kernel/linux/linux-5.10/net/rxrpc/insecure.c (revision 8c2ecf20) 
1// SPDX-License-Identifier: GPL-2.0-or-later
2/* Null security operations.
3 *
4 * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8#include <net/af_rxrpc.h>
9#include "ar-internal.h"
10
11static int none_init_connection_security(struct rxrpc_connection *conn)
12{
13	return 0;
14}
15
16static int none_prime_packet_security(struct rxrpc_connection *conn)
17{
18	return 0;
19}
20
21static int none_secure_packet(struct rxrpc_call *call,
22			      struct sk_buff *skb,
23			      size_t data_size,
24			      void *sechdr)
25{
26	return 0;
27}
28
29static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb,
30			      unsigned int offset, unsigned int len,
31			      rxrpc_seq_t seq, u16 expected_cksum)
32{
33	return 0;
34}
35
36static void none_free_call_crypto(struct rxrpc_call *call)
37{
38}
39
40static void none_locate_data(struct rxrpc_call *call, struct sk_buff *skb,
41			     unsigned int *_offset, unsigned int *_len)
42{
43}
44
45static int none_respond_to_challenge(struct rxrpc_connection *conn,
46				     struct sk_buff *skb,
47				     u32 *_abort_code)
48{
49	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
50
51	trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
52			      tracepoint_string("chall_none"));
53	return -EPROTO;
54}
55
56static int none_verify_response(struct rxrpc_connection *conn,
57				struct sk_buff *skb,
58				u32 *_abort_code)
59{
60	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
61
62	trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
63			      tracepoint_string("resp_none"));
64	return -EPROTO;
65}
66
67static void none_clear(struct rxrpc_connection *conn)
68{
69}
70
71static int none_init(void)
72{
73	return 0;
74}
75
76static void none_exit(void)
77{
78}
79
80/*
81 * RxRPC Kerberos-based security
82 */
83const struct rxrpc_security rxrpc_no_security = {
84	.name				= "none",
85	.security_index			= RXRPC_SECURITY_NONE,
86	.init				= none_init,
87	.exit				= none_exit,
88	.init_connection_security	= none_init_connection_security,
89	.prime_packet_security		= none_prime_packet_security,
90	.free_call_crypto		= none_free_call_crypto,
91	.secure_packet			= none_secure_packet,
92	.verify_packet			= none_verify_packet,
93	.locate_data			= none_locate_data,
94	.respond_to_challenge		= none_respond_to_challenge,
95	.verify_response		= none_verify_response,
96	.clear				= none_clear,
97};
98