STRUCT IEEE80211_HW(9) The basic mac80211 driver inte STRUCT IEEE80211_HW(9)NAMEstruct_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 chanctx_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;
u8 offchannel_tx_hw_queue;
u8 radiotap_mcs_details;
u16 radiotap_vht_details;
netdev_features_t netdev_features;
u8 uapsd_queues;
u8 uapsd_max_sp_len;
};
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.
chanctx_data_size
size (in bytes) of the drv_priv data area within struct
ieee80211_chanctx_conf.
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.
offchannel_tx_hw_queue
HW queue ID to use for offchannel TX (if IEEE80211_HW_QUEUE_CONTROL
is set)
radiotap_mcs_details
lists which MCS information can the HW reports, by default it is
set to _MCS, _GI and _BW but doesn´t include _FMT. Use
IEEE80211_RADIOTAP_MCS_HAVE_* values, only adding _BW is supported
today.
radiotap_vht_details
lists which VHT MCS information the HW reports, the default is _GI
| _BANDWIDTH. Use the IEEE80211_RADIOTAP_VHT_KNOWN_* values.
netdev_features
netdev features to be set in each netdev created from this HW. Note
only HW checksum features are currently compatible with mac80211.
Other feature bits will be rejected.
uapsd_queues
This bitmap is included in (re)association frame to indicate for
each access category if it is uAPSD trigger-enabled and delivery-
enabled. Use IEEE80211_WMM_IE_STA_QOSINFO_AC_* to set this bitmap.
Each bit corresponds to different AC. Value ´1´ in specific bit
means that corresponding AC is both trigger- and delivery-enabled.
´0´ means neither enabled.
uapsd_max_sp_len
maximum number of total buffered frames the WMM AP may deliver to a
WMM STA during any Service Period triggered by the WMM STA. Use
IEEE80211_WMM_IE_STA_QOSINFO_SP_* for correct values.
DESCRIPTION
This structure contains the configuration and hardware information for
an 802.11 PHY.
AUTHOR
Johannes Berg <johannes@sipsolutions.net>
Author.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 STRUCT IEEE80211_HW(9)
