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STRUCT IEEE80211_HW(9) The basic mac80211 driver inte STRUCT IEEE80211_HW(9)

NAME

struct_ieee80211_hw - hardware information and state

SYNOPSIS

struct ieee80211_hw {
  struct ieee80211_conf conf;
  struct wiphy * wiphy;
  const char * rate_control_algorithm;
  void * priv;
  u32 flags;
  unsigned int extra_tx_headroom;
  int channel_change_time;
  int vif_data_size;
  int sta_data_size;
  int napi_weight;
  u16 queues;
  u16 max_listen_interval;
  s8 max_signal;
  u8 max_rates;
  u8 max_report_rates;
  u8 max_rate_tries;
  u8 max_rx_aggregation_subframes;
  u8 max_tx_aggregation_subframes;
};

MEMBERS

conf
 
struct ieee80211_conf, device configuration, don't use.
wiphy
This points to the struct wiphy allocated for this 802.11 PHY. You must fill in the perm_addr and dev members of this structure using SET_IEEE80211_DEV and SET_IEEE80211_PERM_ADDR. Additionally, all supported bands (with channels, bitrates) are registered here.
rate_control_algorithm
rate control algorithm for this hardware. If unset (NULL), the default algorithm will be used. Must be set before calling ieee80211_register_hw.
priv
pointer to private area that was allocated for driver use along with this structure.
flags
hardware flags, see enum ieee80211_hw_flags.
extra_tx_headroom
headroom to reserve in each transmit skb for use by the driver (e.g. for transmit headers.)
channel_change_time
time (in microseconds) it takes to change channels.
vif_data_size
size (in bytes) of the drv_priv data area within struct ieee80211_vif.
sta_data_size
size (in bytes) of the drv_priv data area within struct ieee80211_sta.
napi_weight
weight used for NAPI polling. You must specify an appropriate value here if a napi_poll operation is provided by your driver.
queues
number of available hardware transmit queues for data packets. WMM/QoS requires at least four, these queues need to have configurable access parameters.
max_listen_interval
max listen interval in units of beacon interval that HW supports
max_signal
Maximum value for signal (rssi) in RX information, used only when IEEE80211_HW_SIGNAL_UNSPEC or IEEE80211_HW_SIGNAL_DB
max_rates
maximum number of alternate rate retry stages the hw can handle.
max_report_rates
maximum number of alternate rate retry stages the hw can report back.
max_rate_tries
maximum number of tries for each stage
max_rx_aggregation_subframes
maximum buffer size (number of sub-frames) to be used for A-MPDU block ack receiver aggregation. This is only relevant if the device has restrictions on the number of subframes, if it relies on mac80211 to do reordering it shouldn't be set.
max_tx_aggregation_subframes
maximum number of subframes in an aggregate an HT driver will transmit, used by the peer as a hint to size its reorder buffer.

DESCRIPTION

This structure contains the configuration and hardware information for an 802.11 PHY.

AUTHOR

Johannes Berg <johannes@sipsolutions.net>
Author.

COPYRIGHT

March 2016 Kernel Hackers Manual 3.2.