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 * IEEE 802.3ad Link Aggregation.
28 */
29
30 #include <sys/conf.h>
31 #include <sys/modctl.h>
32 #include <sys/aggr.h>
33 #include <sys/aggr_impl.h>
34
35 /* module description */
36 #define AGGR_LINKINFO "Link Aggregation MAC"
37
38 /* device info ptr, only one for instance 0 */
39 dev_info_t *aggr_dip = NULL;
40
41 static int aggr_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
42 static int aggr_attach(dev_info_t *, ddi_attach_cmd_t);
43 static int aggr_detach(dev_info_t *, ddi_detach_cmd_t);
44
45 DDI_DEFINE_STREAM_OPS(aggr_dev_ops, nulldev, nulldev, aggr_attach, aggr_detach,
46 nodev, aggr_getinfo, D_MP, NULL, ddi_quiesce_not_supported);
47
48 static struct modldrv aggr_modldrv = {
49 &mod_driverops, /* Type of module. This one is a driver */
50 AGGR_LINKINFO, /* short description */
51 &aggr_dev_ops /* driver specific ops */
52 };
53
54 static struct modlinkage modlinkage = {
55 MODREV_1, &aggr_modldrv, NULL
56 };
57
58 int
_init(void)59 _init(void)
60 {
61 int err;
62
63 mac_init_ops(&aggr_dev_ops, "aggr");
64 if ((err = mod_install(&modlinkage)) != 0)
65 mac_fini_ops(&aggr_dev_ops);
66 return (err);
67 }
68
69 int
_fini(void)70 _fini(void)
71 {
72 int err;
73
74 if ((err = mod_remove(&modlinkage)) == 0)
75 mac_fini_ops(&aggr_dev_ops);
76 return (err);
77 }
78
79 int
_info(struct modinfo * modinfop)80 _info(struct modinfo *modinfop)
81 {
82 return (mod_info(&modlinkage, modinfop));
83 }
84
85 /*ARGSUSED*/
86 static int
aggr_getinfo(dev_info_t * dip,ddi_info_cmd_t infocmd,void * arg,void ** result)87 aggr_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
88 void **result)
89 {
90 switch (infocmd) {
91 case DDI_INFO_DEVT2DEVINFO:
92 *result = aggr_dip;
93 return (DDI_SUCCESS);
94 case DDI_INFO_DEVT2INSTANCE:
95 *result = 0;
96 return (DDI_SUCCESS);
97 }
98 return (DDI_FAILURE);
99 }
100
101 static int
aggr_attach(dev_info_t * dip,ddi_attach_cmd_t cmd)102 aggr_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
103 {
104 switch (cmd) {
105 case DDI_ATTACH:
106 if (ddi_get_instance(dip) != 0) {
107 /* we only allow instance 0 to attach */
108 return (DDI_FAILURE);
109 }
110 if (aggr_ioc_init() != 0)
111 return (DDI_FAILURE);
112 aggr_dip = dip;
113 aggr_port_init();
114 aggr_grp_init();
115 aggr_lacp_init();
116 return (DDI_SUCCESS);
117
118 case DDI_RESUME:
119 return (DDI_SUCCESS);
120
121 default:
122 return (DDI_FAILURE);
123 }
124 }
125
126 /*ARGSUSED*/
127 static int
aggr_detach(dev_info_t * dip,ddi_detach_cmd_t cmd)128 aggr_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
129 {
130 switch (cmd) {
131 case DDI_DETACH:
132 if (aggr_grp_count() > 0)
133 return (DDI_FAILURE);
134
135 aggr_dip = NULL;
136 aggr_port_fini();
137 aggr_grp_fini();
138 aggr_lacp_fini();
139 aggr_ioc_fini();
140 return (DDI_SUCCESS);
141
142 case DDI_SUSPEND:
143 return (DDI_SUCCESS);
144
145 default:
146 return (DDI_FAILURE);
147 }
148 }
149