xref: /illumos-gate/usr/src/uts/common/io/vnic/vnic_ctl.c (revision aedf2b3bb56b025fcaf87b49ec6c8aeea07f16d7)
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 }
327