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 struct rxrpc_key_token *token)
13{
14 return 0;
15}
16
17/*
18 * Allocate an appropriately sized buffer for the amount of data remaining.
19 */
20static struct rxrpc_txbuf *none_alloc_txbuf(struct rxrpc_call *call, size_t remain, gfp_t gfp)
21{
22 return rxrpc_alloc_data_txbuf(call, min_t(size_t, remain, RXRPC_JUMBO_DATALEN), data_align: 0, gfp);
23}
24
25static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb)
26{
27 return 0;
28}
29
30static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb)
31{
32 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
33
34 sp->flags |= RXRPC_RX_VERIFIED;
35 return 0;
36}
37
38static void none_free_call_crypto(struct rxrpc_call *call)
39{
40}
41
42static int none_respond_to_challenge(struct rxrpc_connection *conn,
43 struct sk_buff *skb)
44{
45 return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, err: -EPROTO,
46 why: rxrpc_eproto_rxnull_challenge);
47}
48
49static int none_verify_response(struct rxrpc_connection *conn,
50 struct sk_buff *skb)
51{
52 return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, err: -EPROTO,
53 why: rxrpc_eproto_rxnull_response);
54}
55
56static void none_clear(struct rxrpc_connection *conn)
57{
58}
59
60static int none_init(void)
61{
62 return 0;
63}
64
65static void none_exit(void)
66{
67}
68
69/*
70 * RxRPC Kerberos-based security
71 */
72const struct rxrpc_security rxrpc_no_security = {
73 .name = "none",
74 .security_index = RXRPC_SECURITY_NONE,
75 .init = none_init,
76 .exit = none_exit,
77 .init_connection_security = none_init_connection_security,
78 .free_call_crypto = none_free_call_crypto,
79 .alloc_txbuf = none_alloc_txbuf,
80 .secure_packet = none_secure_packet,
81 .verify_packet = none_verify_packet,
82 .respond_to_challenge = none_respond_to_challenge,
83 .verify_response = none_verify_response,
84 .clear = none_clear,
85};
86

source code of linux/net/rxrpc/insecure.c