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 if (IS_ERR(err)) 55 return PTR_ERR(err); 56 57 return 0; 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_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 91 __le16 pan_id) 92 { 93 ASSERT_RTNL(); 94 95 /* TODO 96 * I am not sure about to check here on broadcast pan_id. 97 * Broadcast is a valid setting, comment from 802.15.4: 98 * If this value is 0xffff, the device is not associated. 99 * 100 * This could useful to simple deassociate an device. 101 */ 102 if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST)) 103 return -EINVAL; 104 105 wpan_dev->pan_id = pan_id; 106 return 0; 107 } 108 109 static int 110 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy, 111 struct wpan_dev *wpan_dev, 112 u8 min_be, u8 max_be) 113 { 114 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 115 116 ASSERT_RTNL(); 117 118 if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS)) 119 return -EOPNOTSUPP; 120 121 wpan_dev->min_be = min_be; 122 wpan_dev->max_be = max_be; 123 return 0; 124 } 125 126 static int 127 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 128 __le16 short_addr) 129 { 130 ASSERT_RTNL(); 131 132 /* TODO 133 * I am not sure about to check here on broadcast short_addr. 134 * Broadcast is a valid setting, comment from 802.15.4: 135 * A value of 0xfffe indicates that the device has 136 * associated but has not been allocated an address. A 137 * value of 0xffff indicates that the device does not 138 * have a short address. 139 * 140 * I think we should allow to set these settings but 141 * don't allow to allow socket communication with it. 142 */ 143 if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) || 144 short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST)) 145 return -EINVAL; 146 147 wpan_dev->short_addr = short_addr; 148 return 0; 149 } 150 151 static int 152 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy, 153 struct wpan_dev *wpan_dev, 154 u8 max_csma_backoffs) 155 { 156 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 157 158 ASSERT_RTNL(); 159 160 if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS)) 161 return -EOPNOTSUPP; 162 163 wpan_dev->csma_retries = max_csma_backoffs; 164 return 0; 165 } 166 167 static int 168 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy, 169 struct wpan_dev *wpan_dev, 170 s8 max_frame_retries) 171 { 172 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 173 174 ASSERT_RTNL(); 175 176 if (!(local->hw.flags & IEEE802154_HW_FRAME_RETRIES)) 177 return -EOPNOTSUPP; 178 179 wpan_dev->frame_retries = max_frame_retries; 180 return 0; 181 } 182 183 static int 184 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 185 bool mode) 186 { 187 struct ieee802154_local *local = wpan_phy_priv(wpan_phy); 188 189 ASSERT_RTNL(); 190 191 if (!(local->hw.flags & IEEE802154_HW_LBT)) 192 return -EOPNOTSUPP; 193 194 wpan_dev->lbt = mode; 195 return 0; 196 } 197 198 const struct cfg802154_ops mac802154_config_ops = { 199 .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated, 200 .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated, 201 .add_virtual_intf = ieee802154_add_iface, 202 .del_virtual_intf = ieee802154_del_iface, 203 .set_channel = ieee802154_set_channel, 204 .set_pan_id = ieee802154_set_pan_id, 205 .set_short_addr = ieee802154_set_short_addr, 206 .set_backoff_exponent = ieee802154_set_backoff_exponent, 207 .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs, 208 .set_max_frame_retries = ieee802154_set_max_frame_retries, 209 .set_lbt_mode = ieee802154_set_lbt_mode, 210 }; 211