text: /* SPDX-License-Identifier: GPL-2.0-or-later */
  /* Types and definitions for AF_RXRPC.
   *
   * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   * Written by David Howells (dhowells@redhat.com)
   */
  
  #ifndef _UAPI_LINUX_RXRPC_H
  #define _UAPI_LINUX_RXRPC_H
  
  #include <linux/types.h>
  #include <linux/in.h>
  #include <linux/in6.h>
  
  /*
   * RxRPC socket address
   */
  struct sockaddr_rxrpc {
  	__kernel_sa_family_t	srx_family;	/* address family */
  	__u16			srx_service;	/* service desired */
  	__u16			transport_type;	/* type of transport socket (SOCK_DGRAM) */
  	__u16			transport_len;	/* length of transport address */
  	union {
  		__kernel_sa_family_t family;	/* transport address family */
  		struct sockaddr_in sin;		/* IPv4 transport address */
  		struct sockaddr_in6 sin6;	/* IPv6 transport address */
  	} transport;
  };
  
  /*
   * RxRPC socket options
   */
  #define RXRPC_SECURITY_KEY		1	/* [clnt] set client security key */
  #define RXRPC_SECURITY_KEYRING		2	/* [srvr] set ring of server security keys */
  #define RXRPC_EXCLUSIVE_CONNECTION	3	/* Deprecated; use RXRPC_EXCLUSIVE_CALL instead */
  #define RXRPC_MIN_SECURITY_LEVEL	4	/* minimum security level */
  #define RXRPC_UPGRADEABLE_SERVICE	5	/* Upgrade service[0] -> service[1] */
  #define RXRPC_SUPPORTED_CMSG		6	/* Get highest supported control message type */
  
  /*
   * RxRPC control messages
   * - If neither abort or accept are specified, the message is a data message.
   * - terminal messages mean that a user call ID tag can be recycled
   * - s/r/- indicate whether these are applicable to sendmsg() and/or recvmsg()
   */
  enum rxrpc_cmsg_type {
  	RXRPC_USER_CALL_ID	= 1,	/* sr: user call ID specifier */
  	RXRPC_ABORT		= 2,	/* sr: abort request / notification [terminal] */
  	RXRPC_ACK		= 3,	/* -r: [Service] RPC op final ACK received [terminal] */
  	RXRPC_NET_ERROR		= 5,	/* -r: network error received [terminal] */
  	RXRPC_BUSY		= 6,	/* -r: server busy received [terminal] */
  	RXRPC_LOCAL_ERROR	= 7,	/* -r: local error generated [terminal] */
  	RXRPC_NEW_CALL		= 8,	/* -r: [Service] new incoming call notification */
  	RXRPC_ACCEPT		= 9,	/* s-: [Service] accept request */
  	RXRPC_EXCLUSIVE_CALL	= 10,	/* s-: Call should be on exclusive connection */
  	RXRPC_UPGRADE_SERVICE	= 11,	/* s-: Request service upgrade for client call */
  	RXRPC_TX_LENGTH		= 12,	/* s-: Total length of Tx data */
  	RXRPC_SET_CALL_TIMEOUT	= 13,	/* s-: Set one or more call timeouts */
  	RXRPC__SUPPORTED
  };
  
  /*
   * RxRPC security levels
   */
  #define RXRPC_SECURITY_PLAIN	0	/* plain secure-checksummed packets only */
  #define RXRPC_SECURITY_AUTH	1	/* authenticated packets */
  #define RXRPC_SECURITY_ENCRYPT	2	/* encrypted packets */
  
  /*
   * RxRPC security indices
   */
  #define RXRPC_SECURITY_NONE	0	/* no security protocol */
  #define RXRPC_SECURITY_RXKAD	2	/* kaserver or kerberos 4 */
  #define RXRPC_SECURITY_RXGK	4	/* gssapi-based */
  #define RXRPC_SECURITY_RXK5	5	/* kerberos 5 */
  
  /*
   * RxRPC-level abort codes
   */
  #define RX_CALL_DEAD		-1	/* call/conn has been inactive and is shut down */
  #define RX_INVALID_OPERATION	-2	/* invalid operation requested / attempted */
  #define RX_CALL_TIMEOUT		-3	/* call timeout exceeded */
  #define RX_EOF			-4	/* unexpected end of data on read op */
  #define RX_PROTOCOL_ERROR	-5	/* low-level protocol error */
  #define RX_USER_ABORT		-6	/* generic user abort */
  #define RX_ADDRINUSE		-7	/* UDP port in use */
  #define RX_DEBUGI_BADTYPE	-8	/* bad debugging packet type */
  
  /*
   * (un)marshalling abort codes (rxgen)
   */
  #define RXGEN_CC_MARSHAL	-450
  #define RXGEN_CC_UNMARSHAL	-451
  #define RXGEN_SS_MARSHAL	-452
  #define RXGEN_SS_UNMARSHAL	-453
  #define RXGEN_DECODE		-454
  #define RXGEN_OPCODE		-455
  #define RXGEN_SS_XDRFREE	-456
  #define RXGEN_CC_XDRFREE	-457
  
  /*
   * Rx kerberos security abort codes
   * - unfortunately we have no generalised security abort codes to say things
   *   like "unsupported security", so we have to use these instead and hope the
   *   other side understands
   */
  #define RXKADINCONSISTENCY	19270400	/* security module structure inconsistent */
  #define RXKADPACKETSHORT	19270401	/* packet too short for security challenge */
  #define RXKADLEVELFAIL		19270402	/* security level negotiation failed */
  #define RXKADTICKETLEN		19270403	/* ticket length too short or too long */
  #define RXKADOUTOFSEQUENCE	19270404	/* packet had bad sequence number */
  #define RXKADNOAUTH		19270405	/* caller not authorised */
  #define RXKADBADKEY		19270406	/* illegal key: bad parity or weak */
  #define RXKADBADTICKET		19270407	/* security object was passed a bad ticket */
  #define RXKADUNKNOWNKEY		19270408	/* ticket contained unknown key version number */
  #define RXKADEXPIRED		19270409	/* authentication expired */
  #define RXKADSEALEDINCON	19270410	/* sealed data inconsistent */
  #define RXKADDATALEN		19270411	/* user data too long */
  #define RXKADILLEGALLEVEL	19270412	/* caller not authorised to use encrypted conns */
  
  #endif /* _UAPI_LINUX_RXRPC_H */
  