xref: /openbmc/linux/net/rxrpc/insecure.c (revision a5b2c10c) 
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 
11 static int none_init_connection_security(struct rxrpc_connection *conn)
12 {
13 	return 0;
14 }
15 
16 static int none_prime_packet_security(struct rxrpc_connection *conn)
17 {
18 	return 0;
19 }
20 
21 static 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 
29 static 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 
36 static void none_free_call_crypto(struct rxrpc_call *call)
37 {
38 }
39 
40 static void none_locate_data(struct rxrpc_call *call, struct sk_buff *skb,
41 			     unsigned int *_offset, unsigned int *_len)
42 {
43 }
44 
45 static 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 
56 static 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 
67 static void none_clear(struct rxrpc_connection *conn)
68 {
69 }
70 
71 static int none_init(void)
72 {
73 	return 0;
74 }
75 
76 static void none_exit(void)
77 {
78 }
79 
80 /*
81  * RxRPC Kerberos-based security
82  */
83 const 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