1 /* This program is free software; you can redistribute it and/or modify 2 * it under the terms of the GNU General Public License version 2 3 * as published by the Free Software Foundation. 4 * 5 * This program is distributed in the hope that it will be useful, 6 * but WITHOUT ANY WARRANTY; without even the implied warranty of 7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8 * GNU General Public License for more details. 9 * 10 * Authors: 11 * Alexander Aring <aar@pengutronix.de> 12 * 13 * Based on: net/mac80211/cfg.c 14 */ 15 16 #include <net/rtnetlink.h> 17 #include <net/cfg802154.h> 18 19 #include "ieee802154_i.h" 20 #include "driver-ops.h" 21 #include "cfg.h" 22 23 static struct net_device * 24 ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy, 25 const char *name, 26 unsigned char name_assign_type, int type) 27 { 28 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 29 struct net_device *dev; 30 31 rtnl_lock(); 32 dev = ieee802154_if_add(local, name, name_assign_type, type, 33 cpu_to_le64(0x0000000000000000ULL)); 34 rtnl_unlock(); 35 36 return dev; 37 } 38 39 static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy, 40 struct net_device *dev) 41 { 42 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); 43 44 ieee802154_if_remove(sdata); 45 } 46 47 #ifdef CONFIG_PM 48 static int ieee802154_suspend(struct wpan_phy *wpan_phy) 49 { 50 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 51 52 if (!local->open_count) 53 goto suspend; 54 55 ieee802154_stop_queue(&local->hw); 56 synchronize_net(); 57 58 /* stop hardware - this must stop RX */ 59 ieee802154_stop_device(local); 60 61 suspend: 62 local->suspended = true; 63 return 0; 64 } 65 66 static int ieee802154_resume(struct wpan_phy *wpan_phy) 67 { 68 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 69 int ret; 70 71 /* nothing to do if HW shouldn't run */ 72 if (!local->open_count) 73 goto wake_up; 74 75 /* restart hardware */ 76 ret = drv_start(local); 77 if (ret) 78 return ret; 79 80 wake_up: 81 ieee802154_wake_queue(&local->hw); 82 local->suspended = false; 83 return 0; 84 } 85 #else 86 #define ieee802154_suspend NULL 87 #define ieee802154_resume NULL 88 #endif 89 90 static int 91 ieee802154_add_iface(struct wpan_phy *phy, const char *name, 92 unsigned char name_assign_type, 93 enum nl802154_iftype type, __le64 extended_addr) 94 { 95 struct ieee802154_local *local = wpan_phy_priv(phy); 96 struct net_device *err; 97 98 err = ieee802154_if_add(local, name, name_assign_type, type, 99 extended_addr); 100 return PTR_ERR_OR_ZERO(err); 101 } 102 103 static int 104 ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev) 105 { 106 ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev)); 107 108 return 0; 109 } 110 111 static int 112 ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel) 113 { 114 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 115 int ret; 116 117 ASSERT_RTNL(); 118 119 if (wpan_phy->current_page == page && 120 wpan_phy->current_channel == channel) 121 return 0; 122 123 ret = drv_set_channel(local, page, channel); 124 if (!ret) { 125 wpan_phy->current_page = page; 126 wpan_phy->current_channel = channel; 127 } 128 129 return ret; 130 } 131 132 static int 133 ieee802154_set_cca_mode(struct wpan_phy *wpan_phy, 134 const struct wpan_phy_cca *cca) 135 { 136 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 137 int ret; 138 139 ASSERT_RTNL(); 140 141 if (wpan_phy_cca_cmp(&wpan_phy->cca, cca)) 142 return 0; 143 144 ret = drv_set_cca_mode(local, cca); 145 if (!ret) 146 wpan_phy->cca = *cca; 147 148 return ret; 149 } 150 151 static int 152 ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level) 153 { 154 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 155 int ret; 156 157 ASSERT_RTNL(); 158 159 if (wpan_phy->cca_ed_level == ed_level) 160 return 0; 161 162 ret = drv_set_cca_ed_level(local, ed_level); 163 if (!ret) 164 wpan_phy->cca_ed_level = ed_level; 165 166 return ret; 167 } 168 169 static int 170 ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power) 171 { 172 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 173 int ret; 174 175 ASSERT_RTNL(); 176 177 if (wpan_phy->transmit_power == power) 178 return 0; 179 180 ret = drv_set_tx_power(local, power); 181 if (!ret) 182 wpan_phy->transmit_power = power; 183 184 return ret; 185 } 186 187 static int 188 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 189 __le16 pan_id) 190 { 191 int ret; 192 193 ASSERT_RTNL(); 194 195 if (wpan_dev->pan_id == pan_id) 196 return 0; 197 198 ret = mac802154_wpan_update_llsec(wpan_dev->netdev); 199 if (!ret) 200 wpan_dev->pan_id = pan_id; 201 202 return ret; 203 } 204 205 static int 206 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy, 207 struct wpan_dev *wpan_dev, 208 u8 min_be, u8 max_be) 209 { 210 ASSERT_RTNL(); 211 212 if (wpan_dev->min_be == min_be && 213 wpan_dev->max_be == max_be) 214 return 0; 215 216 wpan_dev->min_be = min_be; 217 wpan_dev->max_be = max_be; 218 return 0; 219 } 220 221 static int 222 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 223 __le16 short_addr) 224 { 225 ASSERT_RTNL(); 226 227 if (wpan_dev->short_addr == short_addr) 228 return 0; 229 230 wpan_dev->short_addr = short_addr; 231 return 0; 232 } 233 234 static int 235 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy, 236 struct wpan_dev *wpan_dev, 237 u8 max_csma_backoffs) 238 { 239 ASSERT_RTNL(); 240 241 if (wpan_dev->csma_retries == max_csma_backoffs) 242 return 0; 243 244 wpan_dev->csma_retries = max_csma_backoffs; 245 return 0; 246 } 247 248 static int 249 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy, 250 struct wpan_dev *wpan_dev, 251 s8 max_frame_retries) 252 { 253 ASSERT_RTNL(); 254 255 if (wpan_dev->frame_retries == max_frame_retries) 256 return 0; 257 258 wpan_dev->frame_retries = max_frame_retries; 259 return 0; 260 } 261 262 static int 263 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 264 bool mode) 265 { 266 ASSERT_RTNL(); 267 268 if (wpan_dev->lbt == mode) 269 return 0; 270 271 wpan_dev->lbt = mode; 272 return 0; 273 } 274 275 const struct cfg802154_ops mac802154_config_ops = { 276 .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated, 277 .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated, 278 .suspend = ieee802154_suspend, 279 .resume = ieee802154_resume, 280 .add_virtual_intf = ieee802154_add_iface, 281 .del_virtual_intf = ieee802154_del_iface, 282 .set_channel = ieee802154_set_channel, 283 .set_cca_mode = ieee802154_set_cca_mode, 284 .set_cca_ed_level = ieee802154_set_cca_ed_level, 285 .set_tx_power = ieee802154_set_tx_power, 286 .set_pan_id = ieee802154_set_pan_id, 287 .set_short_addr = ieee802154_set_short_addr, 288 .set_backoff_exponent = ieee802154_set_backoff_exponent, 289 .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs, 290 .set_max_frame_retries = ieee802154_set_max_frame_retries, 291 .set_lbt_mode = ieee802154_set_lbt_mode, 292 }; 293