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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* RxRPC kernel service interface definitions
3 *
4 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8#ifndef _NET_RXRPC_H
9#define _NET_RXRPC_H
10
11#include <linux/rxrpc.h>
12#include <linux/ktime.h>
13
14struct key;
15struct sock;
16struct socket;
17struct rxrpc_call;
18struct rxrpc_peer;
19struct krb5_buffer;
20enum rxrpc_abort_reason;
21
22enum rxrpc_interruptibility {
23 RXRPC_INTERRUPTIBLE, /* Call is interruptible */
24 RXRPC_PREINTERRUPTIBLE, /* Call can be cancelled whilst waiting for a slot */
25 RXRPC_UNINTERRUPTIBLE, /* Call should not be interruptible at all */
26};
27
28enum rxrpc_oob_type {
29 RXRPC_OOB_CHALLENGE, /* Security challenge for a connection */
30};
31
32/*
33 * Debug ID counter for tracing.
34 */
35extern atomic_t rxrpc_debug_id;
36
37/*
38 * Operations table for rxrpc to call out to a kernel application (e.g. kAFS).
39 */
40struct rxrpc_kernel_ops {
41 void (*notify_new_call)(struct sock *sk, struct rxrpc_call *call,
42 unsigned long user_call_ID);
43 void (*discard_new_call)(struct rxrpc_call *call, unsigned long user_call_ID);
44 void (*user_attach_call)(struct rxrpc_call *call, unsigned long user_call_ID);
45 void (*notify_oob)(struct sock *sk, struct sk_buff *oob);
46};
47
48typedef void (*rxrpc_notify_rx_t)(struct sock *, struct rxrpc_call *,
49 unsigned long);
50typedef void (*rxrpc_notify_end_tx_t)(struct sock *, struct rxrpc_call *,
51 unsigned long);
52
53void rxrpc_kernel_set_notifications(struct socket *sock,
54 const struct rxrpc_kernel_ops *app_ops);
55struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
56 struct rxrpc_peer *peer,
57 struct key *key,
58 unsigned long user_call_ID,
59 s64 tx_total_len,
60 u32 hard_timeout,
61 gfp_t gfp,
62 rxrpc_notify_rx_t notify_rx,
63 u16 service_id,
64 bool upgrade,
65 enum rxrpc_interruptibility interruptibility,
66 unsigned int debug_id);
67int rxrpc_kernel_send_data(struct socket *, struct rxrpc_call *,
68 struct msghdr *, size_t,
69 rxrpc_notify_end_tx_t);
70int rxrpc_kernel_recv_data(struct socket *, struct rxrpc_call *,
71 struct iov_iter *, size_t *, bool, u32 *, u16 *);
72bool rxrpc_kernel_abort_call(struct socket *, struct rxrpc_call *,
73 u32, int, enum rxrpc_abort_reason);
74void rxrpc_kernel_shutdown_call(struct socket *sock, struct rxrpc_call *call);
75void rxrpc_kernel_put_call(struct socket *sock, struct rxrpc_call *call);
76struct rxrpc_peer *rxrpc_kernel_lookup_peer(struct socket *sock,
77 struct sockaddr_rxrpc *srx, gfp_t gfp);
78void rxrpc_kernel_put_peer(struct rxrpc_peer *peer);
79struct rxrpc_peer *rxrpc_kernel_get_peer(struct rxrpc_peer *peer);
80struct rxrpc_peer *rxrpc_kernel_get_call_peer(struct socket *sock, struct rxrpc_call *call);
81const struct sockaddr_rxrpc *rxrpc_kernel_remote_srx(const struct rxrpc_peer *peer);
82const struct sockaddr *rxrpc_kernel_remote_addr(const struct rxrpc_peer *peer);
83unsigned long rxrpc_kernel_set_peer_data(struct rxrpc_peer *peer, unsigned long app_data);
84unsigned long rxrpc_kernel_get_peer_data(const struct rxrpc_peer *peer);
85unsigned int rxrpc_kernel_get_srtt(const struct rxrpc_peer *);
86int rxrpc_kernel_charge_accept(struct socket *sock, rxrpc_notify_rx_t notify_rx,
87 unsigned long user_call_ID, gfp_t gfp,
88 unsigned int debug_id);
89void rxrpc_kernel_set_tx_length(struct socket *, struct rxrpc_call *, s64);
90bool rxrpc_kernel_check_life(const struct socket *, const struct rxrpc_call *);
91
92int rxrpc_sock_set_min_security_level(struct sock *sk, unsigned int val);
93int rxrpc_sock_set_security_keyring(struct sock *, struct key *);
94int rxrpc_sock_set_manage_response(struct sock *sk, bool set);
95
96enum rxrpc_oob_type rxrpc_kernel_query_oob(struct sk_buff *oob,
97 struct rxrpc_peer **_peer,
98 unsigned long *_peer_appdata);
99struct sk_buff *rxrpc_kernel_dequeue_oob(struct socket *sock,
100 enum rxrpc_oob_type *_type);
101void rxrpc_kernel_free_oob(struct sk_buff *oob);
102void rxrpc_kernel_query_challenge(struct sk_buff *challenge,
103 struct rxrpc_peer **_peer,
104 unsigned long *_peer_appdata,
105 u16 *_service_id, u8 *_security_index);
106int rxrpc_kernel_reject_challenge(struct sk_buff *challenge, u32 abort_code,
107 int error, enum rxrpc_abort_reason why);
108int rxkad_kernel_respond_to_challenge(struct sk_buff *challenge);
109u32 rxgk_kernel_query_challenge(struct sk_buff *challenge);
110int rxgk_kernel_respond_to_challenge(struct sk_buff *challenge,
111 struct krb5_buffer *appdata);
112u8 rxrpc_kernel_query_call_security(struct rxrpc_call *call,
113 u16 *_service_id, u32 *_enctype);
114
115#endif /* _NET_RXRPC_H */