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 | * Allocate an appropriately sized buffer for the amount of data remaining. |
19 | */ |
20 | static 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 | |
25 | static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb) |
26 | { |
27 | return 0; |
28 | } |
29 | |
30 | static 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 | |
38 | static void none_free_call_crypto(struct rxrpc_call *call) |
39 | { |
40 | } |
41 | |
42 | static 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 | |
49 | static 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 | |
56 | static void none_clear(struct rxrpc_connection *conn) |
57 | { |
58 | } |
59 | |
60 | static int none_init(void) |
61 | { |
62 | return 0; |
63 | } |
64 | |
65 | static void none_exit(void) |
66 | { |
67 | } |
68 | |
69 | /* |
70 | * RxRPC Kerberos-based security |
71 | */ |
72 | const 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 | |