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/*
* Copyright (C) 2007, 2008, 2009 Siemens AG
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Written by:
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
*/
#ifndef __NET_CFG802154_H
#define __NET_CFG802154_H
#include <linux/ieee802154.h>
#include <linux/netdevice.h>
#include <linux/mutex.h>
#include <linux/bug.h>
#include <net/nl802154.h>
struct wpan_phy;
struct wpan_phy_cca;
struct cfg802154_ops {
struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
const char *name,
unsigned char name_assign_type,
int type);
void (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
struct net_device *dev);
int (*add_virtual_intf)(struct wpan_phy *wpan_phy,
const char *name,
unsigned char name_assign_type,
enum nl802154_iftype type,
__le64 extended_addr);
int (*del_virtual_intf)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev);
int (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
int (*set_cca_mode)(struct wpan_phy *wpan_phy,
const struct wpan_phy_cca *cca);
int (*set_pan_id)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, __le16 pan_id);
int (*set_short_addr)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, __le16 short_addr);
int (*set_backoff_exponent)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, u8 min_be,
u8 max_be);
int (*set_max_csma_backoffs)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
u8 max_csma_backoffs);
int (*set_max_frame_retries)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
s8 max_frame_retries);
int (*set_lbt_mode)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, bool mode);
};
static inline bool
wpan_phy_supported_bool(bool b, enum nl802154_supported_bool_states st)
{
switch (st) {
case NL802154_SUPPORTED_BOOL_TRUE:
return b;
case NL802154_SUPPORTED_BOOL_FALSE:
return !b;
case NL802154_SUPPORTED_BOOL_BOTH:
return true;
default:
WARN_ON(1);
}
return false;
}
struct wpan_phy_supported {
u32 channels[IEEE802154_MAX_PAGE + 1],
cca_modes, cca_opts;
enum nl802154_supported_bool_states lbt;
u8 min_minbe, max_minbe, min_maxbe, max_maxbe,
min_csma_backoffs, max_csma_backoffs;
s8 min_frame_retries, max_frame_retries;
size_t tx_powers_size, cca_ed_levels_size;
const s32 *tx_powers, *cca_ed_levels;
};
struct wpan_phy_cca {
enum nl802154_cca_modes mode;
enum nl802154_cca_opts opt;
};
static inline bool
wpan_phy_cca_cmp(const struct wpan_phy_cca *a, const struct wpan_phy_cca *b)
{
if (a->mode != b->mode)
return false;
if (a->mode == NL802154_CCA_ENERGY_CARRIER)
return a->opt == b->opt;
return true;
}
/**
* @WPAN_PHY_FLAG_TRANSMIT_POWER: Indicates that transceiver will support
* transmit power setting.
* @WPAN_PHY_FLAG_CCA_ED_LEVEL: Indicates that transceiver will support cca ed
* level setting.
* @WPAN_PHY_FLAG_CCA_MODE: Indicates that transceiver will support cca mode
* setting.
*/
enum wpan_phy_flags {
WPAN_PHY_FLAG_TXPOWER = BIT(1),
WPAN_PHY_FLAG_CCA_ED_LEVEL = BIT(2),
WPAN_PHY_FLAG_CCA_MODE = BIT(3),
};
struct wpan_phy {
struct mutex pib_lock;
/* If multiple wpan_phys are registered and you're handed e.g.
* a regular netdev with assigned ieee802154_ptr, you won't
* know whether it points to a wpan_phy your driver has registered
* or not. Assign this to something global to your driver to
* help determine whether you own this wpan_phy or not.
*/
const void *privid;
u32 flags;
/*
* This is a PIB according to 802.15.4-2011.
* We do not provide timing-related variables, as they
* aren't used outside of driver
*/
u8 current_channel;
u8 current_page;
struct wpan_phy_supported supported;
/* current transmit_power in mBm */
s32 transmit_power;
struct wpan_phy_cca cca;
__le64 perm_extended_addr;
/* current cca ed threshold in mBm */
s32 cca_ed_level;
/* PHY depended MAC PIB values */
/* 802.15.4 acronym: Tdsym in usec */
u8 symbol_duration;
/* lifs and sifs periods timing */
u16 lifs_period;
u16 sifs_period;
struct device dev;
char priv[0] __aligned(NETDEV_ALIGN);
};
struct wpan_dev {
struct wpan_phy *wpan_phy;
int iftype;
/* the remainder of this struct should be private to cfg802154 */
struct list_head list;
struct net_device *netdev;
u32 identifier;
/* MAC PIB */
__le16 pan_id;
__le16 short_addr;
__le64 extended_addr;
/* MAC BSN field */
u8 bsn;
/* MAC DSN field */
u8 dsn;
u8 min_be;
u8 max_be;
u8 csma_retries;
s8 frame_retries;
bool lbt;
bool promiscuous_mode;
};
#define to_phy(_dev) container_of(_dev, struct wpan_phy, dev)
struct wpan_phy *
wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size);
static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev)
{
phy->dev.parent = dev;
}
int wpan_phy_register(struct wpan_phy *phy);
void wpan_phy_unregister(struct wpan_phy *phy);
void wpan_phy_free(struct wpan_phy *phy);
/* Same semantics as for class_for_each_device */
int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data);
static inline void *wpan_phy_priv(struct wpan_phy *phy)
{
BUG_ON(!phy);
return &phy->priv;
}
struct wpan_phy *wpan_phy_find(const char *str);
static inline void wpan_phy_put(struct wpan_phy *phy)
{
put_device(&phy->dev);
}
static inline const char *wpan_phy_name(struct wpan_phy *phy)
{
return dev_name(&phy->dev);
}
#endif /* __NET_CFG802154_H */
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