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 static int 48 ieee802154_add_iface(struct wpan_phy *phy, const char *name, 49 unsigned char name_assign_type, 50 enum nl802154_iftype type, __le64 extended_addr) 51 { 52 struct ieee802154_local *local = wpan_phy_priv(phy); 53 struct net_device *err; 54 55 err = ieee802154_if_add(local, name, name_assign_type, type, 56 extended_addr); 57 return PTR_ERR_OR_ZERO(err); 58 } 59 60 static int 61 ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev) 62 { 63 ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev)); 64 65 return 0; 66 } 67 68 static int 69 ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel) 70 { 71 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 72 int ret; 73 74 ASSERT_RTNL(); 75 76 /* check if phy support this setting */ 77 if (!(wpan_phy->channels_supported[page] & BIT(channel))) 78 return -EINVAL; 79 80 ret = drv_set_channel(local, page, channel); 81 if (!ret) { 82 wpan_phy->current_page = page; 83 wpan_phy->current_channel = channel; 84 } 85 86 return ret; 87 } 88 89 static int 90 ieee802154_set_cca_mode(struct wpan_phy *wpan_phy, 91 const struct wpan_phy_cca *cca) 92 { 93 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 94 int ret; 95 96 ASSERT_RTNL(); 97 98 /* check if phy support this setting */ 99 if (!(local->hw.flags & IEEE802154_HW_CCA_MODE)) 100 return -EOPNOTSUPP; 101 102 ret = drv_set_cca_mode(local, cca); 103 if (!ret) 104 wpan_phy->cca = *cca; 105 106 return ret; 107 } 108 109 static int 110 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 111 __le16 pan_id) 112 { 113 ASSERT_RTNL(); 114 115 /* TODO 116 * I am not sure about to check here on broadcast pan_id. 117 * Broadcast is a valid setting, comment from 802.15.4: 118 * If this value is 0xffff, the device is not associated. 119 * 120 * This could useful to simple deassociate an device. 121 */ 122 if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST)) 123 return -EINVAL; 124 125 wpan_dev->pan_id = pan_id; 126 return 0; 127 } 128 129 static int 130 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy, 131 struct wpan_dev *wpan_dev, 132 u8 min_be, u8 max_be) 133 { 134 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 135 136 ASSERT_RTNL(); 137 138 if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS)) 139 return -EOPNOTSUPP; 140 141 wpan_dev->min_be = min_be; 142 wpan_dev->max_be = max_be; 143 return 0; 144 } 145 146 static int 147 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 148 __le16 short_addr) 149 { 150 ASSERT_RTNL(); 151 152 /* TODO 153 * I am not sure about to check here on broadcast short_addr. 154 * Broadcast is a valid setting, comment from 802.15.4: 155 * A value of 0xfffe indicates that the device has 156 * associated but has not been allocated an address. A 157 * value of 0xffff indicates that the device does not 158 * have a short address. 159 * 160 * I think we should allow to set these settings but 161 * don't allow to allow socket communication with it. 162 */ 163 if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) || 164 short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST)) 165 return -EINVAL; 166 167 wpan_dev->short_addr = short_addr; 168 return 0; 169 } 170 171 static int 172 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy, 173 struct wpan_dev *wpan_dev, 174 u8 max_csma_backoffs) 175 { 176 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 177 178 ASSERT_RTNL(); 179 180 if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS)) 181 return -EOPNOTSUPP; 182 183 wpan_dev->csma_retries = max_csma_backoffs; 184 return 0; 185 } 186 187 static int 188 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy, 189 struct wpan_dev *wpan_dev, 190 s8 max_frame_retries) 191 { 192 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 193 194 ASSERT_RTNL(); 195 196 if (!(local->hw.flags & IEEE802154_HW_FRAME_RETRIES)) 197 return -EOPNOTSUPP; 198 199 wpan_dev->frame_retries = max_frame_retries; 200 return 0; 201 } 202 203 static int 204 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 205 bool mode) 206 { 207 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 208 209 ASSERT_RTNL(); 210 211 if (!(local->hw.flags & IEEE802154_HW_LBT)) 212 return -EOPNOTSUPP; 213 214 wpan_dev->lbt = mode; 215 return 0; 216 } 217 218 const struct cfg802154_ops mac802154_config_ops = { 219 .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated, 220 .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated, 221 .add_virtual_intf = ieee802154_add_iface, 222 .del_virtual_intf = ieee802154_del_iface, 223 .set_channel = ieee802154_set_channel, 224 .set_cca_mode = ieee802154_set_cca_mode, 225 .set_pan_id = ieee802154_set_pan_id, 226 .set_short_addr = ieee802154_set_short_addr, 227 .set_backoff_exponent = ieee802154_set_backoff_exponent, 228 .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs, 229 .set_max_frame_retries = ieee802154_set_max_frame_retries, 230 .set_lbt_mode = ieee802154_set_lbt_mode, 231 }; 232