1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * Copyright (c) 2011 Bayard G. Bell. All rights reserved. 25 */ 26 27 #include <sys/types.h> 28 #include <sys/conf.h> 29 #include <sys/modctl.h> 30 #include <sys/stream.h> 31 #include <sys/strsubr.h> 32 #include <sys/strsun.h> 33 #include <sys/zone.h> 34 #include <inet/common.h> 35 #include <inet/led.h> 36 #include <inet/nd.h> 37 #include <netinet/in.h> 38 39 #include "ncaconf.h" 40 41 extern caddr_t nca_g_nd; /* Head of 'named dispatch' variable list */ 42 43 #define INET_NAME "nca" 44 #define INET_MODSTRTAB ncainfo 45 #define INET_DEVSTRTAB ncainfo 46 #define INET_MODDESC "NCA STREAMS module 1.6" 47 #define INET_DEVDESC "NCA STREAMS driver 1.6" 48 #define INET_DEVMINOR 0 49 #define INET_DEVMTFLAGS D_MP 50 #define INET_MODMTFLAGS D_MP 51 52 #include "../inetddi.c" 53 54 /*ARGSUSED*/ 55 static int 56 nca_open(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp) 57 { 58 /* Reopen supported */ 59 if (q->q_ptr != NULL) 60 return (0); 61 62 /* 63 * NCA is not supported in non-global zones; we enforce this restriction 64 * here. 65 */ 66 if (credp != NULL && crgetzoneid(credp) != GLOBAL_ZONEID) { 67 return (ENOTSUP); 68 } 69 70 if (! (sflag & MODOPEN)) { 71 /* Device instance */ 72 RD(q)->q_ptr = (void *)B_TRUE; 73 WR(q)->q_ptr = (void *)B_TRUE; 74 } else { 75 /* Modopen just pass through */ 76 RD(q)->q_ptr = (void *)B_FALSE; 77 WR(q)->q_ptr = (void *)B_FALSE; 78 } 79 qprocson(q); 80 return (0); 81 } 82 83 static int 84 nca_close(queue_t *q) 85 { 86 qprocsoff(q); 87 RD(q)->q_ptr = NULL; 88 WR(q)->q_ptr = NULL; 89 return (0); 90 } 91 92 static void 93 nca_rput(queue_t *q, mblk_t *mp) 94 { 95 /* Passthrough */ 96 putnext(q, mp); 97 } 98 99 static void 100 nca_wput(queue_t *q, mblk_t *mp) 101 { 102 struct iocblk *iocp; 103 104 if (! (boolean_t)q->q_ptr) { 105 iocp = (struct iocblk *)mp->b_rptr; 106 if (DB_TYPE(mp) == M_IOCTL && iocp->ioc_cmd == NCA_SET_IF) { 107 miocnak(q, mp, 0, ENOTSUP); 108 return; 109 } 110 /* Module, passthrough */ 111 putnext(q, mp); 112 return; 113 } 114 115 switch (DB_TYPE(mp)) { 116 case M_IOCTL: 117 iocp = (struct iocblk *)mp->b_rptr; 118 switch (iocp->ioc_cmd) { 119 case ND_SET: 120 case ND_GET: 121 if (! nd_getset(q, nca_g_nd, mp)) { 122 miocnak(q, mp, 0, ENOENT); 123 return; 124 } 125 qreply(q, mp); 126 break; 127 default: 128 miocnak(q, mp, 0, ENOTSUP); 129 break; 130 } 131 break; 132 default: 133 freemsg(mp); 134 break; 135 } 136 } 137 138 static struct module_info info = { 139 0, "nca", 1, INFPSZ, 65536, 1024 140 }; 141 142 static struct qinit rinit = { 143 (pfi_t)nca_rput, NULL, nca_open, nca_close, NULL, &info 144 }; 145 146 static struct qinit winit = { 147 (pfi_t)nca_wput, NULL, nca_open, nca_close, NULL, &info 148 }; 149 150 struct streamtab ncainfo = { 151 &rinit, &winit 152 }; 153 154 int 155 _init(void) 156 { 157 return (mod_install(&modlinkage)); 158 } 159 160 int 161 _fini(void) 162 { 163 return (EBUSY); 164 } 165 166 int 167 _info(struct modinfo *modinfop) 168 { 169 return (mod_info(&modlinkage, modinfop)); 170 } 171