1 /*- 2 * Copyright (c) 2009, Sun Microsystems, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * - Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * - Redistributions in binary form must reproduce the above copyright notice, 10 * this list of conditions and the following disclaimer in the documentation 11 * and/or other materials provided with the distribution. 12 * - Neither the name of Sun Microsystems, Inc. nor the names of its 13 * contributors may be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _RPC_KRPC_H_ 32 #define _RPC_KRPC_H_ 33 34 #ifdef _KERNEL 35 /* 36 * Definitions now shared between client and server RPC for backchannels. 37 */ 38 #define MCALL_MSG_SIZE 24 39 40 void clnt_bck_svccall(void *, struct mbuf *, uint32_t); 41 enum clnt_stat clnt_bck_call(CLIENT *, struct rpc_callextra *, rpcproc_t, 42 struct mbuf *, struct mbuf **, struct timeval, SVCXPRT *); 43 44 /* 45 * A pending RPC request which awaits a reply. Requests which have 46 * received their reply will have cr_xid set to zero and cr_mrep to 47 * the mbuf chain of the reply. 48 */ 49 struct ct_request { 50 TAILQ_ENTRY(ct_request) cr_link; 51 uint32_t cr_xid; /* XID of request */ 52 struct mbuf *cr_mrep; /* reply received by upcall */ 53 int cr_error; /* any error from upcall */ 54 char cr_verf[MAX_AUTH_BYTES]; /* reply verf */ 55 }; 56 57 TAILQ_HEAD(ct_request_list, ct_request); 58 59 struct rc_data { 60 struct mtx rc_lock; 61 struct sockaddr_storage rc_addr; /* server address */ 62 struct netconfig* rc_nconf; /* network type */ 63 rpcprog_t rc_prog; /* program number */ 64 rpcvers_t rc_vers; /* version number */ 65 size_t rc_sendsz; 66 size_t rc_recvsz; 67 struct timeval rc_timeout; 68 struct timeval rc_retry; 69 int rc_retries; 70 int rc_privport; 71 char *rc_waitchan; 72 int rc_intr; 73 int rc_connecting; 74 int rc_closed; 75 struct ucred *rc_ucred; 76 CLIENT* rc_client; /* underlying RPC client */ 77 struct rpc_err rc_err; 78 void *rc_backchannel; 79 }; 80 81 struct ct_data { 82 struct mtx ct_lock; 83 int ct_threads; /* number of threads in clnt_vc_call */ 84 bool_t ct_closing; /* TRUE if we are closing */ 85 bool_t ct_closed; /* TRUE if we are closed */ 86 struct socket *ct_socket; /* connection socket */ 87 bool_t ct_closeit; /* close it on destroy */ 88 struct timeval ct_wait; /* wait interval in milliseconds */ 89 struct sockaddr_storage ct_addr; /* remote addr */ 90 struct rpc_err ct_error; 91 uint32_t ct_xid; 92 char ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */ 93 size_t ct_mpos; /* pos after marshal */ 94 const char *ct_waitchan; 95 int ct_waitflag; 96 struct mbuf *ct_record; /* current reply record */ 97 size_t ct_record_resid; /* how much left of reply to read */ 98 bool_t ct_record_eor; /* true if reading last fragment */ 99 struct ct_request_list ct_pending; 100 int ct_upcallrefs; /* Ref cnt of upcalls in prog. */ 101 SVCXPRT *ct_backchannelxprt; /* xprt for backchannel */ 102 }; 103 104 struct cf_conn { /* kept in xprt->xp_p1 for actual connection */ 105 enum xprt_stat strm_stat; 106 struct mbuf *mpending; /* unparsed data read from the socket */ 107 struct mbuf *mreq; /* current record being built from mpending */ 108 uint32_t resid; /* number of bytes needed for fragment */ 109 bool_t eor; /* reading last fragment of current record */ 110 }; 111 112 #endif /* _KERNEL */ 113 114 #endif /* _RPC_KRPC_H_ */ 115