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, int type) 26 { 27 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 28 struct net_device *dev; 29 30 rtnl_lock(); 31 dev = ieee802154_if_add(local, name, type, 32 cpu_to_le64(0x0000000000000000ULL)); 33 rtnl_unlock(); 34 35 return dev; 36 } 37 38 static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy, 39 struct net_device *dev) 40 { 41 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); 42 43 ieee802154_if_remove(sdata); 44 } 45 46 static int 47 ieee802154_add_iface(struct wpan_phy *phy, const char *name, 48 enum nl802154_iftype type, __le64 extended_addr) 49 { 50 struct ieee802154_local *local = wpan_phy_priv(phy); 51 struct net_device *err; 52 53 err = ieee802154_if_add(local, name, type, extended_addr); 54 return PTR_ERR_OR_ZERO(err); 55 } 56 57 static int 58 ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev) 59 { 60 ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev)); 61 62 return 0; 63 } 64 65 static int 66 ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel) 67 { 68 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 69 int ret; 70 71 ASSERT_RTNL(); 72 73 /* check if phy support this setting */ 74 if (!(wpan_phy->channels_supported[page] & BIT(channel))) 75 return -EINVAL; 76 77 ret = drv_set_channel(local, page, channel); 78 if (!ret) { 79 wpan_phy->current_page = page; 80 wpan_phy->current_channel = channel; 81 } 82 83 return ret; 84 } 85 86 static int 87 ieee802154_set_cca_mode(struct wpan_phy *wpan_phy, 88 const struct wpan_phy_cca *cca) 89 { 90 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 91 int ret; 92 93 ASSERT_RTNL(); 94 95 /* check if phy support this setting */ 96 if (!(local->hw.flags & IEEE802154_HW_CCA_MODE)) 97 return -EOPNOTSUPP; 98 99 ret = drv_set_cca_mode(local, cca); 100 if (!ret) 101 wpan_phy->cca = *cca; 102 103 return ret; 104 } 105 106 static int 107 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 108 __le16 pan_id) 109 { 110 ASSERT_RTNL(); 111 112 /* TODO 113 * I am not sure about to check here on broadcast pan_id. 114 * Broadcast is a valid setting, comment from 802.15.4: 115 * If this value is 0xffff, the device is not associated. 116 * 117 * This could useful to simple deassociate an device. 118 */ 119 if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST)) 120 return -EINVAL; 121 122 wpan_dev->pan_id = pan_id; 123 return 0; 124 } 125 126 static int 127 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy, 128 struct wpan_dev *wpan_dev, 129 u8 min_be, u8 max_be) 130 { 131 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 132 133 ASSERT_RTNL(); 134 135 if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS)) 136 return -EOPNOTSUPP; 137 138 wpan_dev->min_be = min_be; 139 wpan_dev->max_be = max_be; 140 return 0; 141 } 142 143 static int 144 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 145 __le16 short_addr) 146 { 147 ASSERT_RTNL(); 148 149 /* TODO 150 * I am not sure about to check here on broadcast short_addr. 151 * Broadcast is a valid setting, comment from 802.15.4: 152 * A value of 0xfffe indicates that the device has 153 * associated but has not been allocated an address. A 154 * value of 0xffff indicates that the device does not 155 * have a short address. 156 * 157 * I think we should allow to set these settings but 158 * don't allow to allow socket communication with it. 159 */ 160 if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) || 161 short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST)) 162 return -EINVAL; 163 164 wpan_dev->short_addr = short_addr; 165 return 0; 166 } 167 168 static int 169 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy, 170 struct wpan_dev *wpan_dev, 171 u8 max_csma_backoffs) 172 { 173 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 174 175 ASSERT_RTNL(); 176 177 if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS)) 178 return -EOPNOTSUPP; 179 180 wpan_dev->csma_retries = max_csma_backoffs; 181 return 0; 182 } 183 184 static int 185 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy, 186 struct wpan_dev *wpan_dev, 187 s8 max_frame_retries) 188 { 189 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 190 191 ASSERT_RTNL(); 192 193 if (!(local->hw.flags & IEEE802154_HW_FRAME_RETRIES)) 194 return -EOPNOTSUPP; 195 196 wpan_dev->frame_retries = max_frame_retries; 197 return 0; 198 } 199 200 static int 201 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 202 bool mode) 203 { 204 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 205 206 ASSERT_RTNL(); 207 208 if (!(local->hw.flags & IEEE802154_HW_LBT)) 209 return -EOPNOTSUPP; 210 211 wpan_dev->lbt = mode; 212 return 0; 213 } 214 215 const struct cfg802154_ops mac802154_config_ops = { 216 .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated, 217 .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated, 218 .add_virtual_intf = ieee802154_add_iface, 219 .del_virtual_intf = ieee802154_del_iface, 220 .set_channel = ieee802154_set_channel, 221 .set_cca_mode = ieee802154_set_cca_mode, 222 .set_pan_id = ieee802154_set_pan_id, 223 .set_short_addr = ieee802154_set_short_addr, 224 .set_backoff_exponent = ieee802154_set_backoff_exponent, 225 .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs, 226 .set_max_frame_retries = ieee802154_set_max_frame_retries, 227 .set_lbt_mode = ieee802154_set_lbt_mode, 228 }; 229