1 /*- 2 * Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 * 29 * $FreeBSD$ 30 */ 31 #include "hal.h" 32 #include "../if_medium.h" 33 #include "handler.h" 34 35 static void 36 hal_tx_proc(void *arg, int npending) 37 { 38 struct wtap_hal *hal = (struct wtap_hal *)arg; 39 struct packet *p; 40 41 #if 0 42 DWTAP_PRINTF("%s\n", __func__); 43 #endif 44 45 hal = (struct wtap_hal *)arg; 46 for(;;){ 47 p = medium_get_next_packet(hal->hal_md); 48 if(p == NULL) 49 return; 50 51 hal->plugin->work(hal->plugin, p); 52 53 #if 0 54 DWTAP_PRINTF("[%d] freeing m=%p\n", p->id, p->m); 55 #endif 56 m_free(p->m); 57 free(p, M_WTAP_PACKET); 58 } 59 } 60 61 void 62 init_hal(struct wtap_hal *hal) 63 { 64 65 DWTAP_PRINTF("%s\n", __func__); 66 mtx_init(&hal->hal_mtx, "wtap_hal mtx", NULL, MTX_DEF | MTX_RECURSE); 67 68 hal->hal_md = (struct wtap_medium *)malloc(sizeof(struct wtap_medium), 69 M_WTAP, M_NOWAIT | M_ZERO); 70 bzero(hal->hal_md, sizeof(struct wtap_medium)); 71 72 init_medium(hal->hal_md); 73 /* register event handler for packets */ 74 TASK_INIT(&hal->hal_md->tx_handler->proc, 0, hal_tx_proc, hal); 75 } 76 77 void 78 register_plugin(struct wtap_hal *hal, struct wtap_plugin *plugin) 79 { 80 81 plugin->init(plugin); 82 hal->plugin = plugin; 83 } 84 85 void 86 deregister_plugin(struct wtap_hal *hal) 87 { 88 89 hal->plugin->deinit(hal->plugin); 90 hal->plugin = NULL; /* catch illegal usages */ 91 } 92 93 void 94 deinit_hal(struct wtap_hal *hal) 95 { 96 97 DWTAP_PRINTF("%s\n", __func__); 98 deinit_medium(hal->hal_md); 99 free(hal->hal_md, M_WTAP); 100 mtx_destroy(&hal->hal_mtx); 101 } 102 103 int32_t 104 new_wtap(struct wtap_hal *hal, int32_t id) 105 { 106 static const uint8_t mac_pool[64][IEEE80211_ADDR_LEN] = { 107 {0,152,154,152,150,151}, 108 {0,152,154,152,150,152}, 109 {0,152,154,152,150,153}, 110 {0,152,154,152,150,154}, 111 {0,152,154,152,150,155}, 112 {0,152,154,152,150,156}, 113 {0,152,154,152,150,157}, 114 {0,152,154,152,150,158}, 115 {0,152,154,152,151,151}, 116 {0,152,154,152,151,152}, 117 {0,152,154,152,151,153}, 118 {0,152,154,152,151,154}, 119 {0,152,154,152,151,155}, 120 {0,152,154,152,151,156}, 121 {0,152,154,152,151,157}, 122 {0,152,154,152,151,158}, 123 {0,152,154,152,152,151}, 124 {0,152,154,152,152,152}, 125 {0,152,154,152,152,153}, 126 {0,152,154,152,152,154}, 127 {0,152,154,152,152,155}, 128 {0,152,154,152,152,156}, 129 {0,152,154,152,152,157}, 130 {0,152,154,152,152,158}, 131 {0,152,154,152,153,151}, 132 {0,152,154,152,153,152}, 133 {0,152,154,152,153,153}, 134 {0,152,154,152,153,154}, 135 {0,152,154,152,153,155}, 136 {0,152,154,152,153,156}, 137 {0,152,154,152,153,157}, 138 {0,152,154,152,153,158}, 139 {0,152,154,152,154,151}, 140 {0,152,154,152,154,152}, 141 {0,152,154,152,154,153}, 142 {0,152,154,152,154,154}, 143 {0,152,154,152,154,155}, 144 {0,152,154,152,154,156}, 145 {0,152,154,152,154,157}, 146 {0,152,154,152,154,158}, 147 {0,152,154,152,155,151}, 148 {0,152,154,152,155,152}, 149 {0,152,154,152,155,153}, 150 {0,152,154,152,155,154}, 151 {0,152,154,152,155,155}, 152 {0,152,154,152,155,156}, 153 {0,152,154,152,155,157}, 154 {0,152,154,152,155,158}, 155 {0,152,154,152,156,151}, 156 {0,152,154,152,156,152}, 157 {0,152,154,152,156,153}, 158 {0,152,154,152,156,154}, 159 {0,152,154,152,156,155}, 160 {0,152,154,152,156,156}, 161 {0,152,154,152,156,157}, 162 {0,152,154,152,156,158}, 163 {0,152,154,152,157,151}, 164 {0,152,154,152,157,152}, 165 {0,152,154,152,157,153}, 166 {0,152,154,152,157,154}, 167 {0,152,154,152,157,155}, 168 {0,152,154,152,157,156}, 169 {0,152,154,152,157,157}, 170 {0,152,154,152,157,158} 171 }; 172 173 DWTAP_PRINTF("%s\n", __func__); 174 uint8_t const *macaddr = mac_pool[id]; 175 if(hal->hal_devs[id] != NULL){ 176 printf("error, wtap_id=%d already created\n", id); 177 return -1; 178 } 179 180 hal->hal_devs[id] = (struct wtap_softc *)malloc( 181 sizeof(struct wtap_softc), M_WTAP, M_NOWAIT | M_ZERO); 182 bzero(hal->hal_devs[id], sizeof(struct wtap_softc)); 183 hal->hal_devs[id]->sc_md = hal->hal_md; 184 hal->hal_devs[id]->id = id; 185 snprintf(hal->hal_devs[id]->name, sizeof(hal->hal_devs[id]->name), 186 "wlan%d", id); 187 mtx_init(&hal->hal_devs[id]->sc_mtx, "wtap_softc mtx", NULL, 188 MTX_DEF | MTX_RECURSE); 189 190 if(wtap_attach(hal->hal_devs[id], macaddr)){ 191 printf("%s, cant alloc new wtap\n", __func__); 192 return -1; 193 } 194 195 return 0; 196 } 197 198 int32_t 199 free_wtap(struct wtap_hal *hal, int32_t id) 200 { 201 202 DWTAP_PRINTF("%s\n", __func__); 203 if(hal->hal_devs[id] == NULL){ 204 printf("error, wtap_id=%d never created\n", id); 205 return -1; 206 } 207 208 if(wtap_detach(hal->hal_devs[id])) 209 printf("%s, cant alloc new wtap\n", __func__); 210 mtx_destroy(&hal->hal_devs[id]->sc_mtx); 211 free(hal->hal_devs[id], M_WTAP); 212 hal->hal_devs[id] = NULL; 213 return 0; 214 } 215 216