1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 32*0Sstevel@tonic-gate * The Regents of the University of California 33*0Sstevel@tonic-gate * All Rights Reserved 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 36*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 37*0Sstevel@tonic-gate * contributors. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate /* 43*0Sstevel@tonic-gate * Kernel TLI-like function to initialize a transport 44*0Sstevel@tonic-gate * endpoint using the protocol specified. 45*0Sstevel@tonic-gate * 46*0Sstevel@tonic-gate * Returns: 47*0Sstevel@tonic-gate * 0 on success and "tiptr" is set to a valid transport pointer, 48*0Sstevel@tonic-gate * else a positive error code. 49*0Sstevel@tonic-gate */ 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate #include <sys/param.h> 52*0Sstevel@tonic-gate #include <sys/types.h> 53*0Sstevel@tonic-gate #include <sys/proc.h> 54*0Sstevel@tonic-gate #include <sys/file.h> 55*0Sstevel@tonic-gate #include <sys/user.h> 56*0Sstevel@tonic-gate #include <sys/vnode.h> 57*0Sstevel@tonic-gate #include <sys/errno.h> 58*0Sstevel@tonic-gate #include <sys/stream.h> 59*0Sstevel@tonic-gate #include <sys/ioctl.h> 60*0Sstevel@tonic-gate #include <sys/stropts.h> 61*0Sstevel@tonic-gate #include <sys/strsubr.h> 62*0Sstevel@tonic-gate #include <sys/tihdr.h> 63*0Sstevel@tonic-gate #include <sys/timod.h> 64*0Sstevel@tonic-gate #include <sys/tiuser.h> 65*0Sstevel@tonic-gate #include <sys/t_kuser.h> 66*0Sstevel@tonic-gate #include <sys/kmem.h> 67*0Sstevel@tonic-gate #include <sys/cmn_err.h> 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate static t_scalar_t _t_setsize(t_scalar_t); 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate int 72*0Sstevel@tonic-gate t_kopen(file_t *fp, dev_t rdev, int flags, TIUSER **tiptr, cred_t *cr) 73*0Sstevel@tonic-gate { 74*0Sstevel@tonic-gate int madefp = 0; 75*0Sstevel@tonic-gate struct T_info_ack inforeq; 76*0Sstevel@tonic-gate int retval; 77*0Sstevel@tonic-gate vnode_t *vp; 78*0Sstevel@tonic-gate struct strioctl strioc; 79*0Sstevel@tonic-gate int error; 80*0Sstevel@tonic-gate TIUSER *ntiptr; 81*0Sstevel@tonic-gate int rtries = 0; 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate KTLILOG(2, "t_kopen: fp %x, ", fp); 84*0Sstevel@tonic-gate KTLILOG(2, "rdev %x, ", rdev); 85*0Sstevel@tonic-gate KTLILOG(2, "flags %x\n", flags); 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate *tiptr = NULL; 88*0Sstevel@tonic-gate error = 0; 89*0Sstevel@tonic-gate retval = 0; 90*0Sstevel@tonic-gate if (fp == NULL) { 91*0Sstevel@tonic-gate if (rdev == 0 || rdev == NODEV) { 92*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: null device\n", 0); 93*0Sstevel@tonic-gate return (EINVAL); 94*0Sstevel@tonic-gate } 95*0Sstevel@tonic-gate 96*0Sstevel@tonic-gate /* 97*0Sstevel@tonic-gate * allocate a file pointer, but 98*0Sstevel@tonic-gate * no file descripter. 99*0Sstevel@tonic-gate */ 100*0Sstevel@tonic-gate if ((error = falloc(NULL, flags, &fp, NULL)) != 0) { 101*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: falloc: %d\n", error); 102*0Sstevel@tonic-gate return (error); 103*0Sstevel@tonic-gate } 104*0Sstevel@tonic-gate 105*0Sstevel@tonic-gate /* Install proper cred in file */ 106*0Sstevel@tonic-gate if (cr != fp->f_cred) { 107*0Sstevel@tonic-gate crhold(cr); 108*0Sstevel@tonic-gate crfree(fp->f_cred); 109*0Sstevel@tonic-gate fp->f_cred = cr; 110*0Sstevel@tonic-gate } 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate vp = makespecvp(rdev, VCHR); 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate /* 115*0Sstevel@tonic-gate * this will call the streams open for us. 116*0Sstevel@tonic-gate * Want to retry if error is EAGAIN, the streams open routine 117*0Sstevel@tonic-gate * might fail due to temporarely out of memory. 118*0Sstevel@tonic-gate */ 119*0Sstevel@tonic-gate do { 120*0Sstevel@tonic-gate if ((error = VOP_OPEN(&vp, flags, cr)) == EAGAIN) { 121*0Sstevel@tonic-gate (void) delay(hz); 122*0Sstevel@tonic-gate } 123*0Sstevel@tonic-gate } while (error == EAGAIN && ++rtries < 5); 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate if (error) { 126*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: VOP_OPEN: %d\n", error); 127*0Sstevel@tonic-gate unfalloc(fp); 128*0Sstevel@tonic-gate VN_RELE(vp); 129*0Sstevel@tonic-gate return (error); 130*0Sstevel@tonic-gate } 131*0Sstevel@tonic-gate /* 132*0Sstevel@tonic-gate * fp is completely initialized so drop the write lock. 133*0Sstevel@tonic-gate * I actually don't need any locking on fp in here since 134*0Sstevel@tonic-gate * there is no fd pointing at it. However, since I could 135*0Sstevel@tonic-gate * call closef if there is an error and closef requires 136*0Sstevel@tonic-gate * the fp read locked, I will acquire the read lock here 137*0Sstevel@tonic-gate * and make sure I release it before I leave this routine. 138*0Sstevel@tonic-gate */ 139*0Sstevel@tonic-gate fp->f_vnode = vp; 140*0Sstevel@tonic-gate mutex_exit(&fp->f_tlock); 141*0Sstevel@tonic-gate 142*0Sstevel@tonic-gate madefp = 1; 143*0Sstevel@tonic-gate } else { 144*0Sstevel@tonic-gate vp = fp->f_vnode; 145*0Sstevel@tonic-gate } 146*0Sstevel@tonic-gate 147*0Sstevel@tonic-gate if (vp->v_stream == NULL) { 148*0Sstevel@tonic-gate if (madefp) 149*0Sstevel@tonic-gate (void) closef(fp); 150*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: not a streams device\n", 0); 151*0Sstevel@tonic-gate return (ENOSTR); 152*0Sstevel@tonic-gate } 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate /* 155*0Sstevel@tonic-gate * allocate a new transport structure 156*0Sstevel@tonic-gate */ 157*0Sstevel@tonic-gate ntiptr = kmem_alloc(TIUSERSZ, KM_SLEEP); 158*0Sstevel@tonic-gate ntiptr->fp = fp; 159*0Sstevel@tonic-gate ntiptr->flags = madefp ? MADE_FP : 0; 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate KTLILOG(2, "t_kopen: vp %x, ", vp); 162*0Sstevel@tonic-gate KTLILOG(2, "stp %x\n", vp->v_stream); 163*0Sstevel@tonic-gate 164*0Sstevel@tonic-gate /* 165*0Sstevel@tonic-gate * see if TIMOD is already pushed 166*0Sstevel@tonic-gate */ 167*0Sstevel@tonic-gate error = strioctl(vp, I_FIND, (intptr_t)"timod", 0, K_TO_K, cr, &retval); 168*0Sstevel@tonic-gate if (error) { 169*0Sstevel@tonic-gate kmem_free(ntiptr, TIUSERSZ); 170*0Sstevel@tonic-gate if (madefp) 171*0Sstevel@tonic-gate (void) closef(fp); 172*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: strioctl(I_FIND, timod): %d\n", error); 173*0Sstevel@tonic-gate return (error); 174*0Sstevel@tonic-gate } 175*0Sstevel@tonic-gate 176*0Sstevel@tonic-gate if (retval == 0) { 177*0Sstevel@tonic-gate tryagain: 178*0Sstevel@tonic-gate error = strioctl(vp, I_PUSH, (intptr_t)"timod", 0, K_TO_K, cr, 179*0Sstevel@tonic-gate &retval); 180*0Sstevel@tonic-gate if (error) { 181*0Sstevel@tonic-gate switch (error) { 182*0Sstevel@tonic-gate case ENOSPC: 183*0Sstevel@tonic-gate case EAGAIN: 184*0Sstevel@tonic-gate case ENOSR: 185*0Sstevel@tonic-gate /* 186*0Sstevel@tonic-gate * This probably means the master file 187*0Sstevel@tonic-gate * should be tuned. 188*0Sstevel@tonic-gate */ 189*0Sstevel@tonic-gate cmn_err(CE_WARN, 190*0Sstevel@tonic-gate "t_kopen: I_PUSH of timod failed, error %d\n", 191*0Sstevel@tonic-gate error); 192*0Sstevel@tonic-gate (void) delay(hz); 193*0Sstevel@tonic-gate error = 0; 194*0Sstevel@tonic-gate goto tryagain; 195*0Sstevel@tonic-gate 196*0Sstevel@tonic-gate default: 197*0Sstevel@tonic-gate kmem_free(ntiptr, TIUSERSZ); 198*0Sstevel@tonic-gate if (madefp) 199*0Sstevel@tonic-gate (void) closef(fp); 200*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: I_PUSH (timod): %d", 201*0Sstevel@tonic-gate error); 202*0Sstevel@tonic-gate return (error); 203*0Sstevel@tonic-gate } 204*0Sstevel@tonic-gate } 205*0Sstevel@tonic-gate } 206*0Sstevel@tonic-gate 207*0Sstevel@tonic-gate inforeq.PRIM_type = T_INFO_REQ; 208*0Sstevel@tonic-gate strioc.ic_cmd = TI_GETINFO; 209*0Sstevel@tonic-gate strioc.ic_timout = 0; 210*0Sstevel@tonic-gate strioc.ic_dp = (char *)&inforeq; 211*0Sstevel@tonic-gate strioc.ic_len = (int)sizeof (struct T_info_req); 212*0Sstevel@tonic-gate 213*0Sstevel@tonic-gate error = strdoioctl(vp->v_stream, &strioc, FNATIVE, K_TO_K, cr, &retval); 214*0Sstevel@tonic-gate if (error) { 215*0Sstevel@tonic-gate kmem_free(ntiptr, TIUSERSZ); 216*0Sstevel@tonic-gate if (madefp) 217*0Sstevel@tonic-gate (void) closef(fp); 218*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: strdoioctl(T_INFO_REQ): %d\n", error); 219*0Sstevel@tonic-gate return (error); 220*0Sstevel@tonic-gate } 221*0Sstevel@tonic-gate 222*0Sstevel@tonic-gate if (retval) { 223*0Sstevel@tonic-gate if ((retval & 0xff) == TSYSERR) 224*0Sstevel@tonic-gate error = (retval >> 8) & 0xff; 225*0Sstevel@tonic-gate else 226*0Sstevel@tonic-gate error = t_tlitosyserr(retval & 0xff); 227*0Sstevel@tonic-gate kmem_free(ntiptr, TIUSERSZ); 228*0Sstevel@tonic-gate if (madefp) 229*0Sstevel@tonic-gate (void) closef(fp); 230*0Sstevel@tonic-gate KTLILOG(1, "t_kopen: strdoioctl(T_INFO_REQ): retval: 0x%x\n", 231*0Sstevel@tonic-gate retval); 232*0Sstevel@tonic-gate return (error); 233*0Sstevel@tonic-gate } 234*0Sstevel@tonic-gate 235*0Sstevel@tonic-gate if (strioc.ic_len != sizeof (struct T_info_ack)) { 236*0Sstevel@tonic-gate kmem_free(ntiptr, TIUSERSZ); 237*0Sstevel@tonic-gate if (madefp) 238*0Sstevel@tonic-gate (void) closef(fp); 239*0Sstevel@tonic-gate KTLILOG(1, 240*0Sstevel@tonic-gate "t_kopen: strioc.ic_len != sizeof (struct T_info_ack): %d\n", 241*0Sstevel@tonic-gate strioc.ic_len); 242*0Sstevel@tonic-gate return (EPROTO); 243*0Sstevel@tonic-gate } 244*0Sstevel@tonic-gate 245*0Sstevel@tonic-gate ntiptr->tp_info.addr = _t_setsize(inforeq.ADDR_size); 246*0Sstevel@tonic-gate ntiptr->tp_info.options = _t_setsize(inforeq.OPT_size); 247*0Sstevel@tonic-gate ntiptr->tp_info.tsdu = _t_setsize(inforeq.TSDU_size); 248*0Sstevel@tonic-gate ntiptr->tp_info.etsdu = _t_setsize(inforeq.ETSDU_size); 249*0Sstevel@tonic-gate ntiptr->tp_info.connect = _t_setsize(inforeq.CDATA_size); 250*0Sstevel@tonic-gate ntiptr->tp_info.discon = _t_setsize(inforeq.DDATA_size); 251*0Sstevel@tonic-gate ntiptr->tp_info.servtype = inforeq.SERV_type; 252*0Sstevel@tonic-gate 253*0Sstevel@tonic-gate *tiptr = ntiptr; 254*0Sstevel@tonic-gate 255*0Sstevel@tonic-gate return (0); 256*0Sstevel@tonic-gate } 257*0Sstevel@tonic-gate 258*0Sstevel@tonic-gate #define DEFSIZE 128 259*0Sstevel@tonic-gate 260*0Sstevel@tonic-gate static t_scalar_t 261*0Sstevel@tonic-gate _t_setsize(t_scalar_t infosize) 262*0Sstevel@tonic-gate { 263*0Sstevel@tonic-gate switch (infosize) { 264*0Sstevel@tonic-gate case -1: 265*0Sstevel@tonic-gate return (DEFSIZE); 266*0Sstevel@tonic-gate case -2: 267*0Sstevel@tonic-gate return (0); 268*0Sstevel@tonic-gate default: 269*0Sstevel@tonic-gate return (infosize); 270*0Sstevel@tonic-gate } 271*0Sstevel@tonic-gate } 272