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enum_ieee80211_hw_flags

NAME

enum_ieee80211_hw_flags - hardware flags

SYNOPSIS

 enum ieee80211_hw_flags {
   IEEE80211_HW_RX_INCLUDES_FCS,
   IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING,
   IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE,
   IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE,
   IEEE80211_HW_SIGNAL_UNSPEC,
   IEEE80211_HW_SIGNAL_DB,
   IEEE80211_HW_SIGNAL_DBM,
   IEEE80211_HW_NOISE_DBM,
   IEEE80211_HW_SPECTRUM_MGMT,
   IEEE80211_HW_AMPDU_AGGREGATION,
   IEEE80211_HW_NO_STACK_DYNAMIC_PS
 };  
 

CONSTANTS

IEEE80211_HW_RX_INCLUDES_FCS

Indicates that received frames passed to the stack include the FCS at the end.

IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING

Some wireless LAN chipsets buffer broadcast/multicast frames for power saving stations in the hardware/firmware and others rely on the host system for such buffering. This option is used to configure the IEEE 802.11 upper layer to buffer broadcast and multicast frames when there are power saving stations so that the driver can fetch them with ieee80211_get_buffered_bc.

IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE

Hardware is not capable of short slot operation on the 2.4 GHz band.

IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE

Hardware is not capable of receiving frames with short preamble on the 2.4 GHz band.

IEEE80211_HW_SIGNAL_UNSPEC

Hardware can provide signal values but we don't know its units. We expect values between 0 and max_signal. If possible please provide dB or dBm instead.

IEEE80211_HW_SIGNAL_DB

Hardware gives signal values in dB, decibel difference from an arbitrary, fixed reference. We expect values between 0 and max_signal. If possible please provide dBm instead.

IEEE80211_HW_SIGNAL_DBM

Hardware gives signal values in dBm, decibel difference from one milliwatt. This is the preferred method since it is standardized between different devices. max_signal does not need to be set.

IEEE80211_HW_NOISE_DBM

Hardware can provide noise (radio interference) values in units dBm, decibel difference from one milliwatt.

IEEE80211_HW_SPECTRUM_MGMT

Hardware supports spectrum management defined in 802.11h Measurement, Channel Switch, Quieting, TPC

IEEE80211_HW_AMPDU_AGGREGATION

Hardware supports 11n A-MPDU aggregation.

IEEE80211_HW_NO_STACK_DYNAMIC_PS

Hardware which has dynamic power save support, meaning that power save is enabled in idle periods, and don't need support from stack.

DESCRIPTION

These flags are used to indicate hardware capabilities to the stack. Generally, flags here should have their meaning done in a way that the simplest hardware doesn't need setting any particular flags. There are some exceptions to this rule, however, so you are advised to review these flags carefully.

AUTHOR

Johannes Berg <johannes@sipsolutions.net>

Author.

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