/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* linux/include/linux/sunrpc/auth_gss.h
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*
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* Declarations for RPCSEC_GSS
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*
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* Dug Song <dugsong@monkey.org>
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* Andy Adamson <andros@umich.edu>
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* Bruce Fields <bfields@umich.edu>
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* Copyright (c) 2000 The Regents of the University of Michigan
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*/
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#ifndef _LINUX_SUNRPC_AUTH_GSS_H
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#define _LINUX_SUNRPC_AUTH_GSS_H
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#include <linux/refcount.h>
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#include <linux/sunrpc/auth.h>
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#include <linux/sunrpc/svc.h>
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#include <linux/sunrpc/gss_api.h>
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#define RPC_GSS_VERSION 1
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#define MAXSEQ 0x80000000 /* maximum legal sequence number, from rfc 2203 */
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enum rpc_gss_proc {
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RPC_GSS_PROC_DATA = 0,
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RPC_GSS_PROC_INIT = 1,
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RPC_GSS_PROC_CONTINUE_INIT = 2,
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RPC_GSS_PROC_DESTROY = 3
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};
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enum rpc_gss_svc {
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RPC_GSS_SVC_NONE = 1,
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RPC_GSS_SVC_INTEGRITY = 2,
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RPC_GSS_SVC_PRIVACY = 3
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};
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/* on-the-wire gss cred: */
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struct rpc_gss_wire_cred {
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u32 gc_v; /* version */
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u32 gc_proc; /* control procedure */
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u32 gc_seq; /* sequence number */
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u32 gc_svc; /* service */
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struct xdr_netobj gc_ctx; /* context handle */
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};
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/* on-the-wire gss verifier: */
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struct rpc_gss_wire_verf {
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u32 gv_flavor;
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struct xdr_netobj gv_verf;
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};
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/* return from gss NULL PROC init sec context */
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struct rpc_gss_init_res {
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struct xdr_netobj gr_ctx; /* context handle */
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u32 gr_major; /* major status */
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u32 gr_minor; /* minor status */
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u32 gr_win; /* sequence window */
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struct xdr_netobj gr_token; /* token */
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};
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/* The gss_cl_ctx struct holds all the information the rpcsec_gss client
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* code needs to know about a single security context. In particular,
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* gc_gss_ctx is the context handle that is used to do gss-api calls, while
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* gc_wire_ctx is the context handle that is used to identify the context on
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* the wire when communicating with a server. */
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struct gss_cl_ctx {
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refcount_t count;
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enum rpc_gss_proc gc_proc;
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u32 gc_seq;
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u32 gc_seq_xmit;
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spinlock_t gc_seq_lock;
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struct gss_ctx *gc_gss_ctx;
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struct xdr_netobj gc_wire_ctx;
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struct xdr_netobj gc_acceptor;
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u32 gc_win;
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unsigned long gc_expiry;
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struct rcu_head gc_rcu;
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};
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struct gss_upcall_msg;
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struct gss_cred {
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struct rpc_cred gc_base;
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enum rpc_gss_svc gc_service;
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struct gss_cl_ctx __rcu *gc_ctx;
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struct gss_upcall_msg *gc_upcall;
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const char *gc_principal;
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unsigned long gc_upcall_timestamp;
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};
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#endif /* _LINUX_SUNRPC_AUTH_GSS_H */
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