xref: /linux/include/net/af_rxrpc.h (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0)
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 
14 struct key;
15 struct sock;
16 struct socket;
17 struct rxrpc_call;
18 struct rxrpc_peer;
19 enum rxrpc_abort_reason;
20 
21 enum rxrpc_interruptibility {
22 	RXRPC_INTERRUPTIBLE,	/* Call is interruptible */
23 	RXRPC_PREINTERRUPTIBLE,	/* Call can be cancelled whilst waiting for a slot */
24 	RXRPC_UNINTERRUPTIBLE,	/* Call should not be interruptible at all */
25 };
26 
27 /*
28  * Debug ID counter for tracing.
29  */
30 extern atomic_t rxrpc_debug_id;
31 
32 typedef void (*rxrpc_notify_rx_t)(struct sock *, struct rxrpc_call *,
33 				  unsigned long);
34 typedef void (*rxrpc_notify_end_tx_t)(struct sock *, struct rxrpc_call *,
35 				      unsigned long);
36 typedef void (*rxrpc_notify_new_call_t)(struct sock *, struct rxrpc_call *,
37 					unsigned long);
38 typedef void (*rxrpc_discard_new_call_t)(struct rxrpc_call *, unsigned long);
39 typedef void (*rxrpc_user_attach_call_t)(struct rxrpc_call *, unsigned long);
40 
41 void rxrpc_kernel_new_call_notification(struct socket *,
42 					rxrpc_notify_new_call_t,
43 					rxrpc_discard_new_call_t);
44 struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
45 					   struct rxrpc_peer *peer,
46 					   struct key *key,
47 					   unsigned long user_call_ID,
48 					   s64 tx_total_len,
49 					   u32 hard_timeout,
50 					   gfp_t gfp,
51 					   rxrpc_notify_rx_t notify_rx,
52 					   u16 service_id,
53 					   bool upgrade,
54 					   enum rxrpc_interruptibility interruptibility,
55 					   unsigned int debug_id);
56 int rxrpc_kernel_send_data(struct socket *, struct rxrpc_call *,
57 			   struct msghdr *, size_t,
58 			   rxrpc_notify_end_tx_t);
59 int rxrpc_kernel_recv_data(struct socket *, struct rxrpc_call *,
60 			   struct iov_iter *, size_t *, bool, u32 *, u16 *);
61 bool rxrpc_kernel_abort_call(struct socket *, struct rxrpc_call *,
62 			     u32, int, enum rxrpc_abort_reason);
63 void rxrpc_kernel_shutdown_call(struct socket *sock, struct rxrpc_call *call);
64 void rxrpc_kernel_put_call(struct socket *sock, struct rxrpc_call *call);
65 struct rxrpc_peer *rxrpc_kernel_lookup_peer(struct socket *sock,
66 					    struct sockaddr_rxrpc *srx, gfp_t gfp);
67 void rxrpc_kernel_put_peer(struct rxrpc_peer *peer);
68 struct rxrpc_peer *rxrpc_kernel_get_peer(struct rxrpc_peer *peer);
69 struct rxrpc_peer *rxrpc_kernel_get_call_peer(struct socket *sock, struct rxrpc_call *call);
70 const struct sockaddr_rxrpc *rxrpc_kernel_remote_srx(const struct rxrpc_peer *peer);
71 const struct sockaddr *rxrpc_kernel_remote_addr(const struct rxrpc_peer *peer);
72 unsigned int rxrpc_kernel_get_srtt(const struct rxrpc_peer *);
73 int rxrpc_kernel_charge_accept(struct socket *, rxrpc_notify_rx_t,
74 			       rxrpc_user_attach_call_t, unsigned long, gfp_t,
75 			       unsigned int);
76 void rxrpc_kernel_set_tx_length(struct socket *, struct rxrpc_call *, s64);
77 bool rxrpc_kernel_check_life(const struct socket *, const struct rxrpc_call *);
78 u32 rxrpc_kernel_get_epoch(struct socket *, struct rxrpc_call *);
79 void rxrpc_kernel_set_max_life(struct socket *, struct rxrpc_call *,
80 			       unsigned long);
81 
82 int rxrpc_sock_set_min_security_level(struct sock *sk, unsigned int val);
83 int rxrpc_sock_set_security_keyring(struct sock *, struct key *);
84 
85 #endif /* _NET_RXRPC_H */
86