1 /* SPDX-License-Identifier: GPL-2.0-or-later WITH Linux-syscall-note */
2 /* Types and definitions for AF_RXRPC.
3  *
4  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5  * Written by David Howells (dhowells@redhat.com)
6  */
7 
8 #ifndef _UAPI_LINUX_RXRPC_H
9 #define _UAPI_LINUX_RXRPC_H
10 
11 #include <linux/types.h>
12 #include <linux/in.h>
13 #include <linux/in6.h>
14 
15 /*
16  * RxRPC socket address
17  */
18 struct sockaddr_rxrpc {
19 	__kernel_sa_family_t	srx_family;	/* address family */
20 	__u16			srx_service;	/* service desired */
21 	__u16			transport_type;	/* type of transport socket (SOCK_DGRAM) */
22 	__u16			transport_len;	/* length of transport address */
23 	union {
24 		__kernel_sa_family_t family;	/* transport address family */
25 		struct sockaddr_in sin;		/* IPv4 transport address */
26 		struct sockaddr_in6 sin6;	/* IPv6 transport address */
27 	} transport;
28 };
29 
30 /*
31  * RxRPC socket options
32  */
33 #define RXRPC_SECURITY_KEY		1	/* [clnt] set client security key */
34 #define RXRPC_SECURITY_KEYRING		2	/* [srvr] set ring of server security keys */
35 #define RXRPC_EXCLUSIVE_CONNECTION	3	/* Deprecated; use RXRPC_EXCLUSIVE_CALL instead */
36 #define RXRPC_MIN_SECURITY_LEVEL	4	/* minimum security level */
37 #define RXRPC_UPGRADEABLE_SERVICE	5	/* Upgrade service[0] -> service[1] */
38 #define RXRPC_SUPPORTED_CMSG		6	/* Get highest supported control message type */
39 
40 /*
41  * RxRPC control messages
42  * - If neither abort or accept are specified, the message is a data message.
43  * - terminal messages mean that a user call ID tag can be recycled
44  * - s/r/- indicate whether these are applicable to sendmsg() and/or recvmsg()
45  */
46 enum rxrpc_cmsg_type {
47 	RXRPC_USER_CALL_ID	= 1,	/* sr: user call ID specifier */
48 	RXRPC_ABORT		= 2,	/* sr: abort request / notification [terminal] */
49 	RXRPC_ACK		= 3,	/* -r: [Service] RPC op final ACK received [terminal] */
50 	RXRPC_NET_ERROR		= 5,	/* -r: network error received [terminal] */
51 	RXRPC_BUSY		= 6,	/* -r: server busy received [terminal] */
52 	RXRPC_LOCAL_ERROR	= 7,	/* -r: local error generated [terminal] */
53 	RXRPC_NEW_CALL		= 8,	/* -r: [Service] new incoming call notification */
54 	RXRPC_EXCLUSIVE_CALL	= 10,	/* s-: Call should be on exclusive connection */
55 	RXRPC_UPGRADE_SERVICE	= 11,	/* s-: Request service upgrade for client call */
56 	RXRPC_TX_LENGTH		= 12,	/* s-: Total length of Tx data */
57 	RXRPC_SET_CALL_TIMEOUT	= 13,	/* s-: Set one or more call timeouts */
58 	RXRPC_CHARGE_ACCEPT	= 14,	/* s-: Charge the accept pool with a user call ID */
59 	RXRPC__SUPPORTED
60 };
61 
62 /*
63  * RxRPC security levels
64  */
65 #define RXRPC_SECURITY_PLAIN	0	/* plain secure-checksummed packets only */
66 #define RXRPC_SECURITY_AUTH	1	/* authenticated packets */
67 #define RXRPC_SECURITY_ENCRYPT	2	/* encrypted packets */
68 
69 /*
70  * RxRPC security indices
71  */
72 #define RXRPC_SECURITY_NONE	0	/* no security protocol */
73 #define RXRPC_SECURITY_RXKAD	2	/* kaserver or kerberos 4 */
74 #define RXRPC_SECURITY_RXGK	4	/* gssapi-based */
75 #define RXRPC_SECURITY_RXK5	5	/* kerberos 5 */
76 
77 /*
78  * RxRPC-level abort codes
79  */
80 #define RX_CALL_DEAD		-1	/* call/conn has been inactive and is shut down */
81 #define RX_INVALID_OPERATION	-2	/* invalid operation requested / attempted */
82 #define RX_CALL_TIMEOUT		-3	/* call timeout exceeded */
83 #define RX_EOF			-4	/* unexpected end of data on read op */
84 #define RX_PROTOCOL_ERROR	-5	/* low-level protocol error */
85 #define RX_USER_ABORT		-6	/* generic user abort */
86 #define RX_ADDRINUSE		-7	/* UDP port in use */
87 #define RX_DEBUGI_BADTYPE	-8	/* bad debugging packet type */
88 
89 /*
90  * (un)marshalling abort codes (rxgen)
91  */
92 #define RXGEN_CC_MARSHAL	-450
93 #define RXGEN_CC_UNMARSHAL	-451
94 #define RXGEN_SS_MARSHAL	-452
95 #define RXGEN_SS_UNMARSHAL	-453
96 #define RXGEN_DECODE		-454
97 #define RXGEN_OPCODE		-455
98 #define RXGEN_SS_XDRFREE	-456
99 #define RXGEN_CC_XDRFREE	-457
100 
101 /*
102  * Rx kerberos security abort codes
103  * - unfortunately we have no generalised security abort codes to say things
104  *   like "unsupported security", so we have to use these instead and hope the
105  *   other side understands
106  */
107 #define RXKADINCONSISTENCY	19270400	/* security module structure inconsistent */
108 #define RXKADPACKETSHORT	19270401	/* packet too short for security challenge */
109 #define RXKADLEVELFAIL		19270402	/* security level negotiation failed */
110 #define RXKADTICKETLEN		19270403	/* ticket length too short or too long */
111 #define RXKADOUTOFSEQUENCE	19270404	/* packet had bad sequence number */
112 #define RXKADNOAUTH		19270405	/* caller not authorised */
113 #define RXKADBADKEY		19270406	/* illegal key: bad parity or weak */
114 #define RXKADBADTICKET		19270407	/* security object was passed a bad ticket */
115 #define RXKADUNKNOWNKEY		19270408	/* ticket contained unknown key version number */
116 #define RXKADEXPIRED		19270409	/* authentication expired */
117 #define RXKADSEALEDINCON	19270410	/* sealed data inconsistent */
118 #define RXKADDATALEN		19270411	/* user data too long */
119 #define RXKADILLEGALLEVEL	19270412	/* caller not authorised to use encrypted conns */
120 
121 #endif /* _UAPI_LINUX_RXRPC_H */
122