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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _RPC_KRPC_H_
#define _RPC_KRPC_H_
#ifdef _KERNEL
/*
* Definitions now shared between client and server RPC for backchannels.
*/
#define MCALL_MSG_SIZE 24
void clnt_bck_svccall(void *, struct mbuf *, uint32_t);
enum clnt_stat clnt_bck_call(CLIENT *, struct rpc_callextra *, rpcproc_t,
struct mbuf *, struct mbuf **, struct timeval, SVCXPRT *);
struct mbuf *_rpc_copym_into_ext_pgs(struct mbuf *, int);
/*
* A pending RPC request which awaits a reply. Requests which have
* received their reply will have cr_xid set to zero and cr_mrep to
* the mbuf chain of the reply.
*/
struct ct_request {
TAILQ_ENTRY(ct_request) cr_link;
uint32_t cr_xid; /* XID of request */
struct mbuf *cr_mrep; /* reply received by upcall */
int cr_error; /* any error from upcall */
char cr_verf[MAX_AUTH_BYTES]; /* reply verf */
};
TAILQ_HEAD(ct_request_list, ct_request);
struct rc_data {
struct mtx rc_lock;
struct sockaddr_storage rc_addr; /* server address */
struct netconfig* rc_nconf; /* network type */
rpcprog_t rc_prog; /* program number */
rpcvers_t rc_vers; /* version number */
size_t rc_sendsz;
size_t rc_recvsz;
struct timeval rc_timeout;
struct timeval rc_retry;
int rc_retries;
int rc_privport;
char *rc_waitchan;
int rc_intr;
int rc_connecting;
int rc_closed;
struct ucred *rc_ucred;
CLIENT* rc_client; /* underlying RPC client */
struct rpc_err rc_err;
void *rc_backchannel;
bool rc_tls; /* Enable TLS on connection */
};
/* Bits for ct_rcvstate. */
#define RPCRCVSTATE_NORMAL 0x01 /* Normal reception. */
#define RPCRCVSTATE_NONAPPDATA 0x02 /* Reception of a non-application record. */
#define RPCRCVSTATE_TLSHANDSHAKE 0x04 /* Reception blocked for TLS handshake. */
#define RPCRCVSTATE_UPCALLNEEDED 0x08 /* Upcall to rpctlscd needed. */
#define RPCRCVSTATE_UPCALLINPROG 0x10 /* Upcall to rpctlscd in progress. */
#define RPCRCVSTATE_SOUPCALLNEEDED 0x20 /* Socket upcall needed. */
#define RPCRCVSTATE_UPCALLTHREAD 0x40 /* Upcall kthread running. */
struct ct_data {
struct mtx ct_lock;
int ct_threads; /* number of threads in clnt_vc_call */
bool_t ct_closing; /* TRUE if we are closing */
bool_t ct_closed; /* TRUE if we are closed */
struct socket *ct_socket; /* connection socket */
bool_t ct_closeit; /* close it on destroy */
struct timeval ct_wait; /* wait interval in milliseconds */
struct sockaddr_storage ct_addr; /* remote addr */
struct rpc_err ct_error;
uint32_t ct_xid;
char ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */
size_t ct_mpos; /* pos after marshal */
const char *ct_waitchan;
int ct_waitflag;
struct mbuf *ct_record; /* current reply record */
size_t ct_record_resid; /* how much left of reply to read */
bool_t ct_record_eor; /* true if reading last fragment */
struct ct_request_list ct_pending;
int ct_upcallrefs; /* Ref cnt of upcalls in prog. */
SVCXPRT *ct_backchannelxprt; /* xprt for backchannel */
uint64_t ct_sslsec; /* RPC-over-TLS connection. */
uint64_t ct_sslusec;
uint64_t ct_sslrefno;
uint32_t ct_rcvstate; /* Handle receiving for TLS upcalls */
struct mbuf *ct_raw; /* Raw mbufs recv'd */
};
struct cf_conn { /* kept in xprt->xp_p1 for actual connection */
enum xprt_stat strm_stat;
struct mbuf *mpending; /* unparsed data read from the socket */
struct mbuf *mreq; /* current record being built from mpending */
uint32_t resid; /* number of bytes needed for fragment */
bool_t eor; /* reading last fragment of current record */
};
#endif /* _KERNEL */
#endif /* _RPC_KRPC_H_ */
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