Information on the capabilities of an 802.11 hardware device. More...

#include <net80211.h>

Public Types
enum	{ NET80211_HW_RX_HAS_FCS = (1 << 1), NET80211_HW_NO_SHORT_PREAMBLE = (1 << 2), NET80211_HW_NO_SHORT_SLOT = (1 << 3) }
	A set of flags indicating peculiarities of this device. More...

enum	{ NET80211_SIGNAL_NONE = 0, NET80211_SIGNAL_ARBITRARY, NET80211_SIGNAL_DB, NET80211_SIGNAL_DBM }
	Signal strength information that can be provided by the device. More...

Data Fields
u8	hwaddr [ETH_ALEN]
	Default hardware MAC address. More...

int	modes
	A bitwise OR of the 802.11x modes supported by this device. More...

int	bands
	A bitwise OR of the bands on which this device can communicate. More...

enum net80211_hw_info:: { ... }	flags
	A set of flags indicating peculiarities of this device. More...

enum net80211_hw_info:: { ... }	signal_type
	Signal strength information that can be provided by the device. More...

unsigned	signal_max
	Maximum signal in arbitrary cases. More...

struct net80211_channel	channels [NET80211_MAX_CHANNELS]
	List of RF channels supported by the card. More...

int	nr_channels
	Number of supported channels. More...

u16	rates [NET80211_NR_BANDS][NET80211_MAX_RATES]
	List of transmission rates supported by the card, indexed by band. More...

int	nr_rates [NET80211_NR_BANDS]
	Number of supported rates, indexed by band. More...

unsigned	channel_change_time
	Estimate of the time required to change channels, in microseconds. More...

Detailed Description

Information on the capabilities of an 802.11 hardware device.

In its probe callback, an 802.11 driver must read hardware registers to determine the appropriate contents of this structure, fill it, and pass it to net80211_register() so that the 802.11 layer knows how to treat the hardware and what to advertise as supported to access points.

Definition at line 436 of file net80211.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

A set of flags indicating peculiarities of this device.

Enumerator

NET80211_HW_RX_HAS_FCS

Received frames include a frame check sequence.

NET80211_HW_NO_SHORT_PREAMBLE

Hardware doesn't support 2.4GHz short preambles.

           This is only relevant for 802.11b operation above
           2Mbps. All 802.11g devices support short preambles.

NET80211_HW_NO_SHORT_SLOT

Hardware doesn't support 802.11g short slot operation.

Definition at line 456 of file net80211.h.

              {
                 /** Received frames include a frame check sequence. */
                 NET80211_HW_RX_HAS_FCS = (1 << 1),
 
                 /** Hardware doesn't support 2.4GHz short preambles
                  *
                  * This is only relevant for 802.11b operation above
                  * 2Mbps. All 802.11g devices support short preambles.
                  */
                 NET80211_HW_NO_SHORT_PREAMBLE = (1 << 2),
 
                 /** Hardware doesn't support 802.11g short slot operation */
                 NET80211_HW_NO_SHORT_SLOT = (1 << 3),
         } flags;

◆ anonymous enum

anonymous enum

Signal strength information that can be provided by the device.

Signal strength is passed to net80211_rx(), primarily to allow determination of the closest access point for a multi-AP network. The units are provided for completeness of status displays.

Enumerator
NET80211_SIGNAL_NONE	No signal strength information supported.
NET80211_SIGNAL_ARBITRARY	Signal strength in arbitrary units.
NET80211_SIGNAL_DB	Signal strength in decibels relative to arbitrary base.
NET80211_SIGNAL_DBM	Signal strength in decibels relative to 1mW.

Definition at line 478 of file net80211.h.

              {
                 /** No signal strength information supported */
                 NET80211_SIGNAL_NONE = 0,
                 /** Signal strength in arbitrary units */
                 NET80211_SIGNAL_ARBITRARY,
                 /** Signal strength in decibels relative to arbitrary base */
                 NET80211_SIGNAL_DB,
                 /** Signal strength in decibels relative to 1mW */
                 NET80211_SIGNAL_DBM,
         } signal_type;

Field Documentation

◆ hwaddr

u8 net80211_hw_info::hwaddr[ETH_ALEN]

Default hardware MAC address.

The user may change this by setting the netX/mac setting before the driver's open function is called; in that case the driver must set the hardware MAC address to the address contained in the wrapping net_device's ll_addr field, or if that is impossible, set that ll_addr field back to the unchangeable hardware MAC address.

Definition at line 447 of file net80211.h.

Referenced by ath5k_attach(), ath9k_init_softc(), and rtl818x_probe().

◆ modes

int net80211_hw_info::modes

A bitwise OR of the 802.11x modes supported by this device.

Definition at line 450 of file net80211.h.

Referenced by ath5k_setup_bands(), ath9k_set_hw_capab(), and rtl818x_probe().

◆ bands

int net80211_hw_info::bands

A bitwise OR of the bands on which this device can communicate.

Definition at line 453 of file net80211.h.

Referenced by ath5k_setup_bands(), ath9k_set_hw_capab(), iwlist(), net80211_step_associate(), and rtl818x_probe().

◆ flags

enum { ... } net80211_hw_info::flags

A set of flags indicating peculiarities of this device.

Referenced by ath5k_probe(), ath9k_set_hw_capab(), net80211_process_ie(), net80211_rx(), net80211_send_assoc(), and rtl818x_probe().

◆ signal_type

enum { ... } net80211_hw_info::signal_type

Signal strength information that can be provided by the device.

Signal strength is passed to net80211_rx(), primarily to allow determination of the closest access point for a multi-AP network. The units are provided for completeness of status displays.

Referenced by ath5k_probe(), ath9k_set_hw_capab(), iwstat(), and rtl818x_probe().