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 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/conf.h> 30 #include <sys/modctl.h> 31 #include <sys/stream.h> 32 #include <sys/strsubr.h> 33 #include <sys/strsun.h> 34 #include <sys/zone.h> 35 #include <inet/common.h> 36 #include <inet/led.h> 37 #include <inet/nd.h> 38 #include <netinet/in.h> 39 40 #include "ncaconf.h" 41 42 char _depends_on[] = "fs/sockfs drv/ip"; 43 44 extern caddr_t nca_g_nd; /* Head of 'named dispatch' variable list */ 45 46 #define INET_NAME "nca" 47 #define INET_MODSTRTAB ncainfo 48 #define INET_DEVSTRTAB ncainfo 49 #define INET_MODDESC "NCA STREAMS module 1.6" 50 #define INET_DEVDESC "NCA STREAMS driver 1.6" 51 #define INET_DEVMINOR 0 52 #define INET_DEVMTFLAGS D_MP 53 #define INET_MODMTFLAGS D_MP 54 55 #include "../inetddi.c" 56 57 /*ARGSUSED*/ 58 static int 59 nca_open(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp) 60 { 61 /* Reopen supported */ 62 if (q->q_ptr != NULL) 63 return (0); 64 65 /* 66 * NCA is not supported in non-global zones; we enforce this restriction 67 * here. 68 */ 69 if (credp != NULL && crgetzoneid(credp) != GLOBAL_ZONEID) { 70 return (ENOTSUP); 71 } 72 73 if (! (sflag & MODOPEN)) { 74 /* Device instance */ 75 RD(q)->q_ptr = (void *)B_TRUE; 76 WR(q)->q_ptr = (void *)B_TRUE; 77 } else { 78 /* Modopen just pass through */ 79 RD(q)->q_ptr = (void *)B_FALSE; 80 WR(q)->q_ptr = (void *)B_FALSE; 81 } 82 qprocson(q); 83 return (0); 84 } 85 86 static int 87 nca_close(queue_t *q) 88 { 89 qprocsoff(q); 90 RD(q)->q_ptr = NULL; 91 WR(q)->q_ptr = NULL; 92 return (0); 93 } 94 95 static void 96 nca_rput(queue_t *q, mblk_t *mp) 97 { 98 /* Passthrough */ 99 putnext(q, mp); 100 } 101 102 static void 103 nca_wput(queue_t *q, mblk_t *mp) 104 { 105 struct iocblk *iocp; 106 107 if (! (boolean_t)q->q_ptr) { 108 iocp = (struct iocblk *)mp->b_rptr; 109 if (DB_TYPE(mp) == M_IOCTL && iocp->ioc_cmd == NCA_SET_IF) { 110 miocnak(q, mp, 0, ENOTSUP); 111 return; 112 } 113 /* Module, passthrough */ 114 putnext(q, mp); 115 return; 116 } 117 118 switch (DB_TYPE(mp)) { 119 case M_IOCTL: 120 iocp = (struct iocblk *)mp->b_rptr; 121 switch (iocp->ioc_cmd) { 122 case ND_SET: 123 case ND_GET: 124 if (! nd_getset(q, nca_g_nd, mp)) { 125 miocnak(q, mp, 0, ENOENT); 126 return; 127 } 128 qreply(q, mp); 129 break; 130 default: 131 miocnak(q, mp, 0, ENOTSUP); 132 break; 133 } 134 break; 135 default: 136 freemsg(mp); 137 break; 138 } 139 } 140 141 static struct module_info info = { 142 0, "nca", 1, INFPSZ, 65536, 1024 143 }; 144 145 static struct qinit rinit = { 146 (pfi_t)nca_rput, NULL, nca_open, nca_close, NULL, &info 147 }; 148 149 static struct qinit winit = { 150 (pfi_t)nca_wput, NULL, nca_open, nca_close, NULL, &info 151 }; 152 153 struct streamtab ncainfo = { 154 &rinit, &winit 155 }; 156 157 int 158 _init(void) 159 { 160 return (mod_install(&modlinkage)); 161 } 162 163 int 164 _fini(void) 165 { 166 return (EBUSY); 167 } 168 169 int 170 _info(struct modinfo *modinfop) 171 { 172 return (mod_info(&modlinkage, modinfop)); 173 } 174