Merge branches 'acpi-scan', 'acpi-pnp' and 'acpi-sleep'
[linux-2.6-microblaze.git] / net / rxrpc / insecure.c
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                                          struct rxrpc_key_token *token)
13 {
14         return 0;
15 }
16
17 /*
18  * Work out how much data we can put in an unsecured packet.
19  */
20 static int none_how_much_data(struct rxrpc_call *call, size_t remain,
21                                size_t *_buf_size, size_t *_data_size, size_t *_offset)
22 {
23         *_buf_size = *_data_size = min_t(size_t, remain, RXRPC_JUMBO_DATALEN);
24         *_offset = 0;
25         return 0;
26 }
27
28 static int none_secure_packet(struct rxrpc_call *call, struct sk_buff *skb,
29                               size_t data_size)
30 {
31         return 0;
32 }
33
34 static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb,
35                               unsigned int offset, unsigned int len,
36                               rxrpc_seq_t seq, u16 expected_cksum)
37 {
38         return 0;
39 }
40
41 static void none_free_call_crypto(struct rxrpc_call *call)
42 {
43 }
44
45 static void none_locate_data(struct rxrpc_call *call, struct sk_buff *skb,
46                              unsigned int *_offset, unsigned int *_len)
47 {
48 }
49
50 static int none_respond_to_challenge(struct rxrpc_connection *conn,
51                                      struct sk_buff *skb,
52                                      u32 *_abort_code)
53 {
54         struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
55
56         trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
57                               tracepoint_string("chall_none"));
58         return -EPROTO;
59 }
60
61 static int none_verify_response(struct rxrpc_connection *conn,
62                                 struct sk_buff *skb,
63                                 u32 *_abort_code)
64 {
65         struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
66
67         trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
68                               tracepoint_string("resp_none"));
69         return -EPROTO;
70 }
71
72 static void none_clear(struct rxrpc_connection *conn)
73 {
74 }
75
76 static int none_init(void)
77 {
78         return 0;
79 }
80
81 static void none_exit(void)
82 {
83 }
84
85 /*
86  * RxRPC Kerberos-based security
87  */
88 const struct rxrpc_security rxrpc_no_security = {
89         .name                           = "none",
90         .security_index                 = RXRPC_SECURITY_NONE,
91         .init                           = none_init,
92         .exit                           = none_exit,
93         .init_connection_security       = none_init_connection_security,
94         .free_call_crypto               = none_free_call_crypto,
95         .how_much_data                  = none_how_much_data,
96         .secure_packet                  = none_secure_packet,
97         .verify_packet                  = none_verify_packet,
98         .locate_data                    = none_locate_data,
99         .respond_to_challenge           = none_respond_to_challenge,
100         .verify_response                = none_verify_response,
101         .clear                          = none_clear,
102 };