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 static struct cb_ops aggr_cb_ops = { 46 nulldev, /* open */ 47 nulldev, /* close */ 48 nulldev, /* strategy */ 49 nulldev, /* print */ 50 nodev, /* dump */ 51 nodev, /* read */ 52 nodev, /* write */ 53 nodev, /* ioctl */ 54 nodev, /* devmap */ 55 nodev, /* mmap */ 56 nodev, /* segmap */ 57 nochpoll, /* poll */ 58 ddi_prop_op, /* cb_prop_op */ 59 0, /* streamtab */ 60 D_MP /* Driver compatibility flag */ 61 }; 62 63 static struct dev_ops aggr_dev_ops = { 64 DEVO_REV, /* devo_rev */ 65 0, /* refcnt */ 66 aggr_getinfo, /* get_dev_info */ 67 nulldev, /* identify */ 68 nulldev, /* probe */ 69 aggr_attach, /* attach */ 70 aggr_detach, /* detach */ 71 nodev, /* reset */ 72 &aggr_cb_ops, /* driver operations */ 73 NULL, /* bus operations */ 74 nodev /* dev power */ 75 }; 76 77 static struct modldrv aggr_modldrv = { 78 &mod_driverops, /* Type of module. This one is a driver */ 79 AGGR_LINKINFO, /* short description */ 80 &aggr_dev_ops /* driver specific ops */ 81 }; 82 83 static struct modlinkage modlinkage = { 84 MODREV_1, 85 &aggr_modldrv, 86 NULL 87 }; 88 89 int 90 _init(void) 91 { 92 int err; 93 94 mac_init_ops(&aggr_dev_ops, "aggr"); 95 if ((err = mod_install(&modlinkage)) != 0) 96 mac_fini_ops(&aggr_dev_ops); 97 return (err); 98 } 99 100 int 101 _fini(void) 102 { 103 int err; 104 105 if ((err = mod_remove(&modlinkage)) == 0) 106 mac_fini_ops(&aggr_dev_ops); 107 return (err); 108 } 109 110 int 111 _info(struct modinfo *modinfop) 112 { 113 return (mod_info(&modlinkage, modinfop)); 114 } 115 116 /*ARGSUSED*/ 117 static int 118 aggr_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, 119 void **result) 120 { 121 switch (infocmd) { 122 case DDI_INFO_DEVT2DEVINFO: 123 *result = aggr_dip; 124 return (DDI_SUCCESS); 125 case DDI_INFO_DEVT2INSTANCE: 126 *result = 0; 127 return (DDI_SUCCESS); 128 } 129 return (DDI_FAILURE); 130 } 131 132 static int 133 aggr_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 134 { 135 switch (cmd) { 136 case DDI_ATTACH: 137 if (ddi_get_instance(dip) != 0) { 138 /* we only allow instance 0 to attach */ 139 return (DDI_FAILURE); 140 } 141 if (aggr_ioc_init() != 0) 142 return (DDI_FAILURE); 143 aggr_dip = dip; 144 aggr_port_init(); 145 aggr_grp_init(); 146 aggr_lacp_init(); 147 return (DDI_SUCCESS); 148 149 case DDI_RESUME: 150 return (DDI_SUCCESS); 151 152 default: 153 return (DDI_FAILURE); 154 } 155 } 156 157 /*ARGSUSED*/ 158 static int 159 aggr_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 160 { 161 switch (cmd) { 162 case DDI_DETACH: 163 if (aggr_grp_count() > 0) 164 return (DDI_FAILURE); 165 166 aggr_dip = NULL; 167 aggr_port_fini(); 168 aggr_grp_fini(); 169 aggr_lacp_fini(); 170 aggr_ioc_fini(); 171 return (DDI_SUCCESS); 172 173 case DDI_SUSPEND: 174 return (DDI_SUCCESS); 175 176 default: 177 return (DDI_FAILURE); 178 } 179 } 180