1/*-
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 *
29 * $FreeBSD$
30 */
31
32#ifndef _RPC_KRPC_H_
33#define	_RPC_KRPC_H_
34
35#ifdef _KERNEL
36/*
37 * Definitions now shared between client and server RPC for backchannels.
38 */
39#define MCALL_MSG_SIZE 24
40
41/*
42 * A pending RPC request which awaits a reply. Requests which have
43 * received their reply will have cr_xid set to zero and cr_mrep to
44 * the mbuf chain of the reply.
45 */
46struct ct_request {
47	TAILQ_ENTRY(ct_request) cr_link;
48	uint32_t		cr_xid;		/* XID of request */
49	struct mbuf		*cr_mrep;	/* reply received by upcall */
50	int			cr_error;	/* any error from upcall */
51	char			cr_verf[MAX_AUTH_BYTES]; /* reply verf */
52};
53
54TAILQ_HEAD(ct_request_list, ct_request);
55
56struct rc_data {
57	struct mtx		rc_lock;
58	struct sockaddr_storage	rc_addr; /* server address */
59	struct netconfig*	rc_nconf; /* network type */
60	rpcprog_t		rc_prog;  /* program number */
61	rpcvers_t		rc_vers;  /* version number */
62	size_t			rc_sendsz;
63	size_t			rc_recvsz;
64	struct timeval		rc_timeout;
65	struct timeval		rc_retry;
66	int			rc_retries;
67	int			rc_privport;
68	char			*rc_waitchan;
69	int			rc_intr;
70	int			rc_connecting;
71	int			rc_closed;
72	struct ucred		*rc_ucred;
73	CLIENT*			rc_client; /* underlying RPC client */
74	struct rpc_err		rc_err;
75	void			*rc_backchannel;
76};
77
78struct ct_data {
79	struct mtx	ct_lock;
80	int		ct_threads;	/* number of threads in clnt_vc_call */
81	bool_t		ct_closing;	/* TRUE if we are closing */
82	bool_t		ct_closed;	/* TRUE if we are closed */
83	struct socket	*ct_socket;	/* connection socket */
84	bool_t		ct_closeit;	/* close it on destroy */
85	struct timeval	ct_wait;	/* wait interval in milliseconds */
86	struct sockaddr_storage	ct_addr; /* remote addr */
87	struct rpc_err	ct_error;
88	uint32_t	ct_xid;
89	char		ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */
90	size_t		ct_mpos;	/* pos after marshal */
91	const char	*ct_waitchan;
92	int		ct_waitflag;
93	struct mbuf	*ct_record;	/* current reply record */
94	size_t		ct_record_resid; /* how much left of reply to read */
95	bool_t		ct_record_eor;	 /* true if reading last fragment */
96	struct ct_request_list ct_pending;
97	int		ct_upcallrefs;	/* Ref cnt of upcalls in prog. */
98	SVCXPRT		*ct_backchannelxprt; /* xprt for backchannel */
99};
100
101struct cf_conn {  /* kept in xprt->xp_p1 for actual connection */
102	enum xprt_stat strm_stat;
103	struct mbuf *mpending;	/* unparsed data read from the socket */
104	struct mbuf *mreq;	/* current record being built from mpending */
105	uint32_t resid;		/* number of bytes needed for fragment */
106	bool_t eor;		/* reading last fragment of current record */
107};
108
109#endif	/* _KERNEL */
110
111#endif	/* _RPC_KRPC_H_ */
112