include/linux/sunrpc/auth_gss.h

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