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
nca_open(queue_t * q,dev_t * devp,int flag,int sflag,cred_t * credp)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
nca_close(queue_t * q)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
nca_rput(queue_t * q,mblk_t * mp)96 nca_rput(queue_t *q, mblk_t *mp)
97 {
98 /* Passthrough */
99 putnext(q, mp);
100 }
101
102 static void
nca_wput(queue_t * q,mblk_t * mp)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
_init(void)158 _init(void)
159 {
160 return (mod_install(&modlinkage));
161 }
162
163 int
_fini(void)164 _fini(void)
165 {
166 return (EBUSY);
167 }
168
169 int
_info(struct modinfo * modinfop)170 _info(struct modinfo *modinfop)
171 {
172 return (mod_info(&modlinkage, modinfop));
173 }
174