1/*
2 * linux/include/linux/sunrpc/auth_gss.h
3 *
4 * Declarations for RPCSEC_GSS
5 *
6 * Dug Song <dugsong@monkey.org>
7 * Andy Adamson <andros@umich.edu>
8 * Bruce Fields <bfields@umich.edu>
9 * Copyright (c) 2000 The Regents of the University of Michigan
10 */
11
12#ifndef _LINUX_SUNRPC_AUTH_GSS_H
13#define _LINUX_SUNRPC_AUTH_GSS_H
14
15#ifdef __KERNEL__
16#include <linux/sunrpc/auth.h>
17#include <linux/sunrpc/svc.h>
18#include <linux/sunrpc/gss_api.h>
19
20#define RPC_GSS_VERSION		1
21
22#define MAXSEQ 0x80000000 /* maximum legal sequence number, from rfc 2203 */
23
24enum rpc_gss_proc {
25	RPC_GSS_PROC_DATA = 0,
26	RPC_GSS_PROC_INIT = 1,
27	RPC_GSS_PROC_CONTINUE_INIT = 2,
28	RPC_GSS_PROC_DESTROY = 3
29};
30
31enum rpc_gss_svc {
32	RPC_GSS_SVC_NONE = 1,
33	RPC_GSS_SVC_INTEGRITY = 2,
34	RPC_GSS_SVC_PRIVACY = 3
35};
36
37/* on-the-wire gss cred: */
38struct rpc_gss_wire_cred {
39	u32			gc_v;		/* version */
40	u32			gc_proc;	/* control procedure */
41	u32			gc_seq;		/* sequence number */
42	u32			gc_svc;		/* service */
43	struct xdr_netobj	gc_ctx;		/* context handle */
44};
45
46/* on-the-wire gss verifier: */
47struct rpc_gss_wire_verf {
48	u32			gv_flavor;
49	struct xdr_netobj	gv_verf;
50};
51
52/* return from gss NULL PROC init sec context */
53struct rpc_gss_init_res {
54	struct xdr_netobj	gr_ctx;		/* context handle */
55	u32			gr_major;	/* major status */
56	u32			gr_minor;	/* minor status */
57	u32			gr_win;		/* sequence window */
58	struct xdr_netobj	gr_token;	/* token */
59};
60
61/* The gss_cl_ctx struct holds all the information the rpcsec_gss client
62 * code needs to know about a single security context.  In particular,
63 * gc_gss_ctx is the context handle that is used to do gss-api calls, while
64 * gc_wire_ctx is the context handle that is used to identify the context on
65 * the wire when communicating with a server. */
66
67struct gss_cl_ctx {
68	atomic_t		count;
69	enum rpc_gss_proc	gc_proc;
70	u32			gc_seq;
71	spinlock_t		gc_seq_lock;
72	struct gss_ctx		*gc_gss_ctx;
73	struct xdr_netobj	gc_wire_ctx;
74	struct xdr_netobj	gc_acceptor;
75	u32			gc_win;
76	unsigned long		gc_expiry;
77	struct rcu_head		gc_rcu;
78};
79
80struct gss_upcall_msg;
81struct gss_cred {
82	struct rpc_cred		gc_base;
83	enum rpc_gss_svc	gc_service;
84	struct gss_cl_ctx __rcu	*gc_ctx;
85	struct gss_upcall_msg	*gc_upcall;
86	const char		*gc_principal;
87	unsigned long		gc_upcall_timestamp;
88};
89
90#endif /* __KERNEL__ */
91#endif /* _LINUX_SUNRPC_AUTH_GSS_H */
92
93