vnic_ctl.c revision 7656:2621e50fdf4a 
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 2008 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 <inet/common.h>
35
36/* module description */
37#define	VNIC_LINKINFO		"VNIC MAC"
38
39/* device info ptr, only one for instance 0 */
40static dev_info_t *vnic_dip = NULL;
41static int vnic_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
42static int vnic_attach(dev_info_t *, ddi_attach_cmd_t);
43static int vnic_detach(dev_info_t *, ddi_detach_cmd_t);
44static dld_ioc_func_t vnic_ioc_create, vnic_ioc_modify, vnic_ioc_delete,
45    vnic_ioc_info;
46
47static dld_ioc_info_t vnic_ioc_list[] = {
48	{VNIC_IOC_CREATE, DLDCOPYIN | DLDDLCONFIG, sizeof (vnic_ioc_create_t),
49	    vnic_ioc_create},
50	{VNIC_IOC_DELETE, DLDCOPYIN | DLDDLCONFIG, sizeof (vnic_ioc_delete_t),
51	    vnic_ioc_delete},
52	{VNIC_IOC_INFO, DLDCOPYINOUT, sizeof (vnic_ioc_info_t),
53	    vnic_ioc_info},
54	{VNIC_IOC_MODIFY, DLDCOPYIN | DLDDLCONFIG, sizeof (vnic_ioc_modify_t),
55	    vnic_ioc_modify}
56};
57
58static struct cb_ops vnic_cb_ops = {
59	nulldev,		/* open */
60	nulldev,		/* close */
61	nulldev,		/* strategy */
62	nulldev,		/* print */
63	nodev,			/* dump */
64	nodev,			/* read */
65	nodev,			/* write */
66	nodev,			/* ioctl */
67	nodev,			/* devmap */
68	nodev,			/* mmap */
69	nodev,			/* segmap */
70	nochpoll,		/* poll */
71	ddi_prop_op,		/* cb_prop_op */
72	0,			/* streamtab  */
73	D_MP			/* Driver compatibility flag */
74};
75
76static struct dev_ops vnic_dev_ops = {
77	DEVO_REV,		/* devo_rev */
78	0,			/* refcnt */
79	vnic_getinfo,		/* get_dev_info */
80	nulldev,		/* identify */
81	nulldev,		/* probe */
82	vnic_attach,		/* attach */
83	vnic_detach,		/* detach */
84	nodev,			/* reset */
85	&vnic_cb_ops,		/* driver operations */
86	NULL,			/* bus operations */
87	nodev,			/* dev power */
88	ddi_quiesce_not_supported,	/* dev quiesce */
89};
90
91static struct modldrv vnic_modldrv = {
92	&mod_driverops,		/* Type of module.  This one is a driver */
93	VNIC_LINKINFO,		/* short description */
94	&vnic_dev_ops		/* driver specific ops */
95};
96
97static struct modlinkage modlinkage = {
98	MODREV_1,
99	&vnic_modldrv,
100	NULL
101};
102
103int
104_init(void)
105{
106	int	err;
107
108	mac_init_ops(&vnic_dev_ops, "vnic");
109	if ((err = mod_install(&modlinkage)) != 0)
110		mac_fini_ops(&vnic_dev_ops);
111	return (err);
112}
113
114int
115_fini(void)
116{
117	int	err;
118
119	if ((err = mod_remove(&modlinkage)) == 0)
120		mac_fini_ops(&vnic_dev_ops);
121	return (err);
122}
123
124int
125_info(struct modinfo *modinfop)
126{
127	return (mod_info(&modlinkage, modinfop));
128}
129
130static void
131vnic_init(void)
132{
133	vnic_dev_init();
134	vnic_bcast_init();
135	vnic_classifier_init();
136}
137
138static void
139vnic_fini(void)
140{
141	vnic_dev_fini();
142	vnic_bcast_fini();
143	vnic_classifier_fini();
144}
145
146dev_info_t *
147vnic_get_dip(void)
148{
149	return (vnic_dip);
150}
151
152/*ARGSUSED*/
153static int
154vnic_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
155    void **result)
156{
157	switch (infocmd) {
158	case DDI_INFO_DEVT2DEVINFO:
159		*result = vnic_dip;
160		return (DDI_SUCCESS);
161	case DDI_INFO_DEVT2INSTANCE:
162		*result = 0;
163		return (DDI_SUCCESS);
164	}
165	return (DDI_FAILURE);
166}
167
168static int
169vnic_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
170{
171	switch (cmd) {
172	case DDI_ATTACH:
173		if (ddi_get_instance(dip) != 0) {
174			/* we only allow instance 0 to attach */
175			return (DDI_FAILURE);
176		}
177
178		if (dld_ioc_register(VNIC_IOC, vnic_ioc_list,
179		    DLDIOCCNT(vnic_ioc_list)) != 0)
180			return (DDI_FAILURE);
181
182		vnic_dip = dip;
183		vnic_init();
184
185		return (DDI_SUCCESS);
186
187	case DDI_RESUME:
188		return (DDI_SUCCESS);
189
190	default:
191		return (DDI_FAILURE);
192	}
193}
194
195/*ARGSUSED*/
196static int
197vnic_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
198{
199	switch (cmd) {
200	case DDI_DETACH:
201		/*
202		 * Allow the VNIC instance to be detached only if there
203		 * are not VNICs configured.
204		 */
205		if (vnic_dev_count() > 0)
206			return (DDI_FAILURE);
207
208		vnic_dip = NULL;
209		vnic_fini();
210		dld_ioc_unregister(VNIC_IOC);
211
212		return (DDI_SUCCESS);
213
214	case DDI_SUSPEND:
215		return (DDI_SUCCESS);
216
217	default:
218		return (DDI_FAILURE);
219	}
220}
221
222/*
223 * Process a VNIC_IOC_CREATE request.
224 */
225/* ARGSUSED */
226static int
227vnic_ioc_create(void *karg, intptr_t arg, int mode, cred_t *cred)
228{
229	vnic_ioc_create_t *create_arg = karg;
230	int mac_len;
231	uchar_t mac_addr[MAXMACADDRLEN];
232	datalink_id_t vnic_id, linkid;
233	vnic_mac_addr_type_t mac_addr_type;
234
235	/*
236	 * VNIC link id
237	 */
238	vnic_id = create_arg->vc_vnic_id;
239
240	/*
241	 * Linkid of the link the VNIC is defined on top of.
242	 */
243	linkid = create_arg->vc_link_id;
244
245	/* MAC address */
246	mac_addr_type = create_arg->vc_mac_addr_type;
247	mac_len = create_arg->vc_mac_len;
248
249	switch (mac_addr_type) {
250	case VNIC_MAC_ADDR_TYPE_FIXED:
251		bcopy(create_arg->vc_mac_addr, mac_addr, MAXMACADDRLEN);
252		break;
253	default:
254		return (ENOTSUP);
255	}
256
257	return (vnic_dev_create(vnic_id, linkid, mac_len, mac_addr));
258}
259
260/* ARGSUSED */
261static int
262vnic_ioc_modify(void *karg, intptr_t arg, int mode, cred_t *cred)
263{
264	vnic_ioc_modify_t *modify_arg = karg;
265	datalink_id_t vnic_id;
266	uint_t modify_mask;
267	vnic_mac_addr_type_t mac_addr_type;
268	uint_t mac_len;
269	uchar_t mac_addr[MAXMACADDRLEN];
270
271	vnic_id = modify_arg->vm_vnic_id;
272	modify_mask = modify_arg->vm_modify_mask;
273
274	if (modify_mask & VNIC_IOC_MODIFY_ADDR) {
275		mac_addr_type = modify_arg->vm_mac_addr_type;
276		mac_len = modify_arg->vm_mac_len;
277		bcopy(modify_arg->vm_mac_addr, mac_addr, MAXMACADDRLEN);
278	}
279
280	return (vnic_dev_modify(vnic_id, modify_mask, mac_addr_type,
281	    mac_len, mac_addr));
282}
283
284/* ARGSUSED */
285static int
286vnic_ioc_delete(void *karg, intptr_t arg, int mode, cred_t *cred)
287{
288	vnic_ioc_delete_t *delete_arg = karg;
289
290	return (vnic_dev_delete(delete_arg->vd_vnic_id));
291}
292
293typedef struct vnic_ioc_info_state {
294	uint32_t	bytes_left;
295	uchar_t		*where;
296	int		mode;
297} vnic_ioc_info_state_t;
298
299static int
300vnic_ioc_info_new_vnic(void *arg, datalink_id_t id,
301    vnic_mac_addr_type_t addr_type, uint_t mac_len, uint8_t *mac_addr,
302    datalink_id_t linkid)
303{
304	vnic_ioc_info_state_t *state = arg;
305	/*LINTED*/
306	vnic_ioc_info_vnic_t *vn = (vnic_ioc_info_vnic_t *)state->where;
307
308	if (state->bytes_left < sizeof (*vn))
309		return (ENOSPC);
310
311	vn->vn_vnic_id = id;
312	vn->vn_link_id = linkid;
313	vn->vn_mac_addr_type = addr_type;
314	vn->vn_mac_len = mac_len;
315	if (ddi_copyout(mac_addr, &(vn->vn_mac_addr), mac_len,
316	    state->mode) != 0)
317		return (EFAULT);
318
319	state->where += sizeof (*vn);
320	state->bytes_left -= sizeof (*vn);
321
322	return (0);
323}
324
325/* ARGSUSED */
326static int
327vnic_ioc_info(void *karg, intptr_t arg, int mode, cred_t *cred)
328{
329	vnic_ioc_info_t *info_argp = karg;
330	uint32_t nvnics;
331	datalink_id_t vnic_id, linkid;
332	vnic_ioc_info_state_t state;
333
334	/*
335	 * ID of the vnic to return or vnic device.
336	 * If zero, the call returns information
337	 * regarding all vnics currently defined.
338	 */
339	vnic_id = info_argp->vi_vnic_id;
340	linkid = info_argp->vi_linkid;
341
342	state.bytes_left = info_argp->vi_size;
343	state.where = (uchar_t *)(arg + sizeof (vnic_ioc_info_t));
344	state.mode = mode;
345
346	return (vnic_info(&nvnics, vnic_id, linkid, &state,
347	    vnic_ioc_info_new_vnic));
348}
349