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 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * Virtual Network Interface Card (VNIC)
28 */
29
30 #include <sys/conf.h>
31 #include <sys/modctl.h>
32 #include <sys/vnic.h>
33 #include <sys/vnic_impl.h>
34 #include <sys/policy.h>
35
36 /* module description */
37 #define VNIC_LINKINFO "Virtual NIC"
38
39 /* device info ptr, only one for instance 0 */
40 static dev_info_t *vnic_dip = NULL;
41 static int vnic_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
42 static int vnic_attach(dev_info_t *, ddi_attach_cmd_t);
43 static int vnic_detach(dev_info_t *, ddi_detach_cmd_t);
44
45 static int vnic_ioc_create(void *, intptr_t, int, cred_t *, int *);
46 static int vnic_ioc_delete(void *, intptr_t, int, cred_t *, int *);
47 static int vnic_ioc_info(void *, intptr_t, int, cred_t *, int *);
48 static int vnic_ioc_modify(void *, intptr_t, int, cred_t *, int *);
49
50 static dld_ioc_info_t vnic_ioc_list[] = {
51 {VNIC_IOC_CREATE, DLDCOPYINOUT, sizeof (vnic_ioc_create_t),
52 vnic_ioc_create, secpolicy_dl_config},
53 {VNIC_IOC_DELETE, DLDCOPYIN, sizeof (vnic_ioc_delete_t),
54 vnic_ioc_delete, secpolicy_dl_config},
55 {VNIC_IOC_INFO, DLDCOPYINOUT, sizeof (vnic_ioc_info_t),
56 vnic_ioc_info, NULL},
57 {VNIC_IOC_MODIFY, DLDCOPYIN, sizeof (vnic_ioc_modify_t),
58 vnic_ioc_modify, secpolicy_dl_config}
59 };
60
61 DDI_DEFINE_STREAM_OPS(vnic_dev_ops, nulldev, nulldev, vnic_attach, vnic_detach,
62 nodev, vnic_getinfo, D_MP, NULL, ddi_quiesce_not_supported);
63
64 static struct modldrv vnic_modldrv = {
65 &mod_driverops, /* Type of module. This one is a driver */
66 VNIC_LINKINFO, /* short description */
67 &vnic_dev_ops /* driver specific ops */
68 };
69
70 static struct modlinkage modlinkage = {
71 MODREV_1, { &vnic_modldrv, NULL }
72 };
73
74 int
75 _init(void)
76 {
77 int status;
78
79 mac_init_ops(&vnic_dev_ops, "vnic");
80 status = mod_install(&modlinkage);
81 if (status != DDI_SUCCESS)
82 mac_fini_ops(&vnic_dev_ops);
83
84 return (status);
85 }
86
87 int
88 _fini(void)
89 {
90 int status;
91
92 status = mod_remove(&modlinkage);
93 if (status == DDI_SUCCESS)
94 mac_fini_ops(&vnic_dev_ops);
95
96 return (status);
97 }
98
99 int
100 _info(struct modinfo *modinfop)
101 {
102 return (mod_info(&modlinkage, modinfop));
103 }
104
105 static void
106 vnic_init(void)
107 {
108 vnic_dev_init();
109 }
110
111 static void
112 vnic_fini(void)
113 {
114 vnic_dev_fini();
115 }
116
117 dev_info_t *
118 vnic_get_dip(void)
119 {
120 return (vnic_dip);
121 }
122
123 /*ARGSUSED*/
124 static int
125 vnic_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
126 void **result)
127 {
128 switch (infocmd) {
129 case DDI_INFO_DEVT2DEVINFO:
130 *result = vnic_dip;
131 return (DDI_SUCCESS);
132 case DDI_INFO_DEVT2INSTANCE:
133 *result = NULL;
134 return (DDI_SUCCESS);
135 }
136 return (DDI_FAILURE);
137 }
138
139 static int
140 vnic_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
141 {
142 switch (cmd) {
143 case DDI_ATTACH:
144 if (ddi_get_instance(dip) != 0) {
145 /* we only allow instance 0 to attach */
146 return (DDI_FAILURE);
147 }
148 if (dld_ioc_register(VNIC_IOC, vnic_ioc_list,
149 DLDIOCCNT(vnic_ioc_list)) != 0)
150 return (DDI_FAILURE);
151
152 vnic_dip = dip;
153 vnic_init();
154 return (DDI_SUCCESS);
155
156 case DDI_RESUME:
157 return (DDI_SUCCESS);
158
159 default:
160 return (DDI_FAILURE);
161 }
162 }
163
164 /*ARGSUSED*/
165 static int
166 vnic_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
167 {
168 switch (cmd) {
169 case DDI_DETACH:
170 /*
171 * Allow the VNIC instance to be detached only if there
172 * are not VNICs configured.
173 */
174 if (vnic_dev_count() > 0)
175 return (DDI_FAILURE);
176
177 vnic_dip = NULL;
178 vnic_fini();
179 dld_ioc_unregister(VNIC_IOC);
180 return (DDI_SUCCESS);
181
182 case DDI_SUSPEND:
183 return (DDI_SUCCESS);
184
185 default:
186 return (DDI_FAILURE);
187 }
188 }
189
190 /*
191 * Process a VNICIOC_CREATE request.
192 */
193 /* ARGSUSED */
194 static int
195 vnic_ioc_create(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
196 {
197 vnic_ioc_create_t *create_arg = karg;
198 int err = 0, mac_len = 0, mac_slot;
199 uchar_t mac_addr[MAXMACADDRLEN];
200 uint_t mac_prefix_len;
201 vnic_mac_addr_type_t mac_addr_type;
202 vnic_ioc_diag_t diag = VNIC_IOC_DIAG_NONE;
203 boolean_t is_anchor = create_arg->vc_flags & VNIC_IOC_CREATE_ANCHOR;
204
205 /* MAC address */
206 mac_addr_type = create_arg->vc_mac_addr_type;
207
208 if (is_anchor)
209 goto create;
210
211 switch (mac_addr_type) {
212 case VNIC_MAC_ADDR_TYPE_FIXED:
213 case VNIC_MAC_ADDR_TYPE_VRID:
214 mac_len = create_arg->vc_mac_len;
215 /*
216 * Sanity check the MAC address length. vnic_dev_create()
217 * will perform additional checks to ensure that the
218 * address is a valid unicast address of the appropriate
219 * length.
220 */
221 if (mac_len == 0 || mac_len > MAXMACADDRLEN) {
222 err = EINVAL;
223 diag = VNIC_IOC_DIAG_MACADDRLEN_INVALID;
224 goto bail;
225 }
226 bcopy(create_arg->vc_mac_addr, mac_addr, MAXMACADDRLEN);
227 break;
228 case VNIC_MAC_ADDR_TYPE_FACTORY:
229 mac_slot = create_arg->vc_mac_slot;
230 /* sanity check the specified slot number */
231 if (mac_slot < 0 && mac_slot != -1) {
232 err = EINVAL;
233 diag = VNIC_IOC_DIAG_MACFACTORYSLOTINVALID;
234 goto bail;
235 }
236 break;
237 case VNIC_MAC_ADDR_TYPE_AUTO:
238 mac_slot = -1;
239 /* FALLTHROUGH */
240 case VNIC_MAC_ADDR_TYPE_RANDOM:
241 mac_prefix_len = create_arg->vc_mac_prefix_len;
242 if (mac_prefix_len > MAXMACADDRLEN) {
243 err = EINVAL;
244 diag = VNIC_IOC_DIAG_MACPREFIXLEN_INVALID;
245 goto bail;
246 }
247 mac_len = create_arg->vc_mac_len;
248 if (mac_len > MAXMACADDRLEN) {
249 err = EINVAL;
250 diag = VNIC_IOC_DIAG_MACADDRLEN_INVALID;
251 goto bail;
252 }
253 bcopy(create_arg->vc_mac_addr, mac_addr, MAXMACADDRLEN);
254 break;
255 case VNIC_MAC_ADDR_TYPE_PRIMARY:
256 /*
257 * We will get the primary address when we add this
258 * client
259 */
260 break;
261 default:
262 err = ENOTSUP;
263 goto bail;
264 }
265
266 create:
267 err = vnic_dev_create(create_arg->vc_vnic_id, create_arg->vc_link_id,
268 &mac_addr_type, &mac_len, mac_addr, &mac_slot, mac_prefix_len,
269 create_arg->vc_vid, create_arg->vc_vrid, create_arg->vc_af,
270 &create_arg->vc_resource_props, create_arg->vc_flags, &diag,
271 cred);
272
273
274 if (err != 0)
275 goto bail;
276
277 create_arg->vc_mac_addr_type = mac_addr_type;
278
279 if (is_anchor)
280 goto bail;
281
282 switch (mac_addr_type) {
283 case VNIC_MAC_ADDR_TYPE_FACTORY:
284 create_arg->vc_mac_slot = mac_slot;
285 break;
286 case VNIC_MAC_ADDR_TYPE_RANDOM:
287 bcopy(mac_addr, create_arg->vc_mac_addr, MAXMACADDRLEN);
288 create_arg->vc_mac_len = mac_len;
289 break;
290 }
291
292 bail:
293 create_arg->vc_diag = diag;
294 create_arg->vc_status = err;
295 return (err);
296 }
297
298 /* ARGSUSED */
299 static int
300 vnic_ioc_modify(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
301 {
302 vnic_ioc_modify_t *modify_arg = karg;
303
304 return (vnic_dev_modify(modify_arg->vm_vnic_id,
305 modify_arg->vm_modify_mask, modify_arg->vm_mac_addr_type,
306 modify_arg->vm_mac_len, modify_arg->vm_mac_addr,
307 modify_arg->vm_mac_slot, &modify_arg->vm_resource_props));
308 }
309
310 /* ARGSUSED */
311 static int
312 vnic_ioc_delete(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
313 {
314 vnic_ioc_delete_t *delete_arg = karg;
315
316 return (vnic_dev_delete(delete_arg->vd_vnic_id, 0, cred));
317 }
318
319 /* ARGSUSED */
320 static int
321 vnic_ioc_info(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
322 {
323 vnic_ioc_info_t *info_arg = karg;
324
325 return (vnic_info(&info_arg->vi_info, cred));
326 }