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