1 /* 2 * Copyright (C) 2007, 2008, 2009 Siemens AG 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 6 * as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * Written by: 14 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> 15 */ 16 17 #ifndef __NET_CFG802154_H 18 #define __NET_CFG802154_H 19 20 #include <linux/ieee802154.h> 21 #include <linux/netdevice.h> 22 #include <linux/mutex.h> 23 #include <linux/bug.h> 24 25 #include <net/nl802154.h> 26 27 struct wpan_phy; 28 29 struct cfg802154_ops { 30 struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy, 31 const char *name, 32 int type); 33 void (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy, 34 struct net_device *dev); 35 int (*add_virtual_intf)(struct wpan_phy *wpan_phy, 36 const char *name, 37 enum nl802154_iftype type, 38 __le64 extended_addr); 39 int (*del_virtual_intf)(struct wpan_phy *wpan_phy, 40 struct wpan_dev *wpan_dev); 41 int (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel); 42 int (*set_pan_id)(struct wpan_phy *wpan_phy, 43 struct wpan_dev *wpan_dev, __le16 pan_id); 44 int (*set_short_addr)(struct wpan_phy *wpan_phy, 45 struct wpan_dev *wpan_dev, __le16 short_addr); 46 int (*set_backoff_exponent)(struct wpan_phy *wpan_phy, 47 struct wpan_dev *wpan_dev, u8 min_be, 48 u8 max_be); 49 int (*set_max_csma_backoffs)(struct wpan_phy *wpan_phy, 50 struct wpan_dev *wpan_dev, 51 u8 max_csma_backoffs); 52 int (*set_max_frame_retries)(struct wpan_phy *wpan_phy, 53 struct wpan_dev *wpan_dev, 54 s8 max_frame_retries); 55 int (*set_lbt_mode)(struct wpan_phy *wpan_phy, 56 struct wpan_dev *wpan_dev, bool mode); 57 }; 58 59 struct wpan_phy { 60 struct mutex pib_lock; 61 62 /* If multiple wpan_phys are registered and you're handed e.g. 63 * a regular netdev with assigned ieee802154_ptr, you won't 64 * know whether it points to a wpan_phy your driver has registered 65 * or not. Assign this to something global to your driver to 66 * help determine whether you own this wpan_phy or not. 67 */ 68 const void *privid; 69 70 /* 71 * This is a PIB according to 802.15.4-2011. 72 * We do not provide timing-related variables, as they 73 * aren't used outside of driver 74 */ 75 u8 current_channel; 76 u8 current_page; 77 u32 channels_supported[IEEE802154_MAX_PAGE + 1]; 78 s8 transmit_power; 79 u8 cca_mode; 80 81 __le64 perm_extended_addr; 82 83 s32 cca_ed_level; 84 85 /* PHY depended MAC PIB values */ 86 87 /* 802.15.4 acronym: Tdsym in usec */ 88 u8 symbol_duration; 89 /* lifs and sifs periods timing */ 90 u16 lifs_period; 91 u16 sifs_period; 92 93 struct device dev; 94 95 char priv[0] __aligned(NETDEV_ALIGN); 96 }; 97 98 struct wpan_dev { 99 struct wpan_phy *wpan_phy; 100 int iftype; 101 102 /* the remainder of this struct should be private to cfg802154 */ 103 struct list_head list; 104 struct net_device *netdev; 105 106 u32 identifier; 107 108 /* MAC PIB */ 109 __le16 pan_id; 110 __le16 short_addr; 111 __le64 extended_addr; 112 113 /* MAC BSN field */ 114 u8 bsn; 115 /* MAC DSN field */ 116 u8 dsn; 117 118 u8 min_be; 119 u8 max_be; 120 u8 csma_retries; 121 s8 frame_retries; 122 123 bool lbt; 124 125 bool promiscuous_mode; 126 }; 127 128 #define to_phy(_dev) container_of(_dev, struct wpan_phy, dev) 129 130 struct wpan_phy * 131 wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size); 132 static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev) 133 { 134 phy->dev.parent = dev; 135 } 136 137 int wpan_phy_register(struct wpan_phy *phy); 138 void wpan_phy_unregister(struct wpan_phy *phy); 139 void wpan_phy_free(struct wpan_phy *phy); 140 /* Same semantics as for class_for_each_device */ 141 int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data); 142 143 static inline void *wpan_phy_priv(struct wpan_phy *phy) 144 { 145 BUG_ON(!phy); 146 return &phy->priv; 147 } 148 149 struct wpan_phy *wpan_phy_find(const char *str); 150 151 static inline void wpan_phy_put(struct wpan_phy *phy) 152 { 153 put_device(&phy->dev); 154 } 155 156 static inline const char *wpan_phy_name(struct wpan_phy *phy) 157 { 158 return dev_name(&phy->dev); 159 } 160 161 #endif /* __NET_CFG802154_H */ 162