mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 02:54:32 +08:00
4244db1b0b
Introduce new netlink attributes for SET_PHY_ATTRS: * CSMA minimal backoff exponent * CSMA maximal backoff exponent * CSMA retry limit * frame retransmission limit The CSMA attributes shall correspond to minBE, maxBE and maxCSMABackoffs of 802.15.4, respectively. The frame retransmission shall correspond to maxFrameRetries of 802.15.4, unless given as -1: then the old behaviour of the stack shall apply. For RF2xy, the old behaviour is to not do channel sensing at all and simply send *right now*, which is not intended behaviour for most applications and actually prohibited for some channel/page combinations. For all values except frame retransmission limit, the defaults of 802.15.4 apply. Frame retransmission limits are set to -1 to indicate backward-compatible behaviour. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Written by:
|
|
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
|
|
*/
|
|
|
|
#ifndef WPAN_PHY_H
|
|
#define WPAN_PHY_H
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/bug.h>
|
|
|
|
/* According to the IEEE 802.15.4 stadard the upper most significant bits of
|
|
* the 32-bit channel bitmaps shall be used as an integer value to specify 32
|
|
* possible channel pages. The lower 27 bits of the channel bit map shall be
|
|
* used as a bit mask to specify channel numbers within a channel page.
|
|
*/
|
|
#define WPAN_NUM_CHANNELS 27
|
|
#define WPAN_NUM_PAGES 32
|
|
|
|
struct wpan_phy {
|
|
struct mutex pib_lock;
|
|
|
|
/*
|
|
* 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;
|
|
u32 channels_supported[32];
|
|
s8 transmit_power;
|
|
u8 cca_mode;
|
|
u8 min_be;
|
|
u8 max_be;
|
|
u8 csma_retries;
|
|
s8 frame_retries;
|
|
|
|
bool lbt;
|
|
s32 cca_ed_level;
|
|
|
|
struct device dev;
|
|
int idx;
|
|
|
|
struct net_device *(*add_iface)(struct wpan_phy *phy,
|
|
const char *name, int type);
|
|
void (*del_iface)(struct wpan_phy *phy, struct net_device *dev);
|
|
|
|
int (*set_txpower)(struct wpan_phy *phy, int db);
|
|
int (*set_lbt)(struct wpan_phy *phy, bool on);
|
|
int (*set_cca_mode)(struct wpan_phy *phy, u8 cca_mode);
|
|
int (*set_cca_ed_level)(struct wpan_phy *phy, int level);
|
|
int (*set_csma_params)(struct wpan_phy *phy, u8 min_be, u8 max_be,
|
|
u8 retries);
|
|
int (*set_frame_retries)(struct wpan_phy *phy, s8 retries);
|
|
|
|
char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
|
|
};
|
|
|
|
#define to_phy(_dev) container_of(_dev, struct wpan_phy, dev)
|
|
|
|
struct wpan_phy *wpan_phy_alloc(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
|