[MAC80211]: yet more documentation
Add more mac80211 documentation. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg
David S. Miller
parent
c33e3f3bcd
commit
6b301cdfad
@ -98,42 +98,96 @@ struct ieee80211_rate {
|
||||
* optimizing channel utilization estimates */
|
||||
};
|
||||
|
||||
/* 802.11g is backwards-compatible with 802.11b, so a wlan card can
|
||||
* actually be both in 11b and 11g modes at the same time. */
|
||||
/**
|
||||
* enum ieee80211_phymode - PHY modes
|
||||
*
|
||||
* @MODE_IEEE80211A: 5GHz as defined by 802.11a/802.11h
|
||||
* @MODE_IEEE80211B: 2.4 GHz as defined by 802.11b
|
||||
* @MODE_IEEE80211G: 2.4 GHz as defined by 802.11g (with OFDM),
|
||||
* backwards compatible with 11b mode
|
||||
* @NUM_IEEE80211_MODES: internal
|
||||
*/
|
||||
enum ieee80211_phymode {
|
||||
MODE_IEEE80211A, /* IEEE 802.11a */
|
||||
MODE_IEEE80211B, /* IEEE 802.11b only */
|
||||
MODE_IEEE80211G, /* IEEE 802.11g (and 802.11b compatibility) */
|
||||
MODE_IEEE80211A,
|
||||
MODE_IEEE80211B,
|
||||
MODE_IEEE80211G,
|
||||
|
||||
/* keep last */
|
||||
NUM_IEEE80211_MODES
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ieee80211_hw_mode - PHY mode definition
|
||||
*
|
||||
* This structure describes the capabilities supported by the device
|
||||
* in a single PHY mode.
|
||||
*
|
||||
* @mode: the PHY mode for this definition
|
||||
* @num_channels: number of supported channels
|
||||
* @channels: pointer to array of supported channels
|
||||
* @num_rates: number of supported bitrates
|
||||
* @rates: pointer to array of supported bitrates
|
||||
* @list: internal
|
||||
*/
|
||||
struct ieee80211_hw_mode {
|
||||
int mode; /* MODE_IEEE80211... */
|
||||
int num_channels; /* Number of channels (below) */
|
||||
struct ieee80211_channel *channels; /* Array of supported channels */
|
||||
int num_rates; /* Number of rates (below) */
|
||||
struct ieee80211_rate *rates; /* Array of supported rates */
|
||||
|
||||
struct list_head list; /* Internal, don't touch */
|
||||
struct list_head list;
|
||||
struct ieee80211_channel *channels;
|
||||
struct ieee80211_rate *rates;
|
||||
enum ieee80211_phymode mode;
|
||||
int num_channels;
|
||||
int num_rates;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ieee80211_tx_queue_params - transmit queue configuration
|
||||
*
|
||||
* The information provided in this structure is required for QoS
|
||||
* transmit queue configuration.
|
||||
*
|
||||
* @aifs: arbitration interface space [0..255, -1: use default]
|
||||
* @cw_min: minimum contention window [will be a value of the form
|
||||
* 2^n-1 in the range 1..1023; 0: use default]
|
||||
* @cw_max: maximum contention window [like @cw_min]
|
||||
* @burst_time: maximum burst time in units of 0.1ms, 0 meaning disabled
|
||||
*/
|
||||
struct ieee80211_tx_queue_params {
|
||||
int aifs; /* 0 .. 255; -1 = use default */
|
||||
int cw_min; /* 2^n-1: 1, 3, 7, .. , 1023; 0 = use default */
|
||||
int cw_max; /* 2^n-1: 1, 3, 7, .. , 1023; 0 = use default */
|
||||
int burst_time; /* maximum burst time in 0.1 ms (i.e., 10 = 1 ms);
|
||||
* 0 = disabled */
|
||||
int aifs;
|
||||
int cw_min;
|
||||
int cw_max;
|
||||
int burst_time;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ieee80211_tx_queue_stats_data - transmit queue statistics
|
||||
*
|
||||
* @len: number of packets in queue
|
||||
* @limit: queue length limit
|
||||
* @count: number of frames sent
|
||||
*/
|
||||
struct ieee80211_tx_queue_stats_data {
|
||||
unsigned int len; /* num packets in queue */
|
||||
unsigned int limit; /* queue len (soft) limit */
|
||||
unsigned int count; /* total num frames sent */
|
||||
unsigned int len;
|
||||
unsigned int limit;
|
||||
unsigned int count;
|
||||
};
|
||||
|
||||
enum {
|
||||
/**
|
||||
* enum ieee80211_tx_queue - transmit queue number
|
||||
*
|
||||
* These constants are used with some callbacks that take a
|
||||
* queue number to set parameters for a queue.
|
||||
*
|
||||
* @IEEE80211_TX_QUEUE_DATA0: data queue 0
|
||||
* @IEEE80211_TX_QUEUE_DATA1: data queue 1
|
||||
* @IEEE80211_TX_QUEUE_DATA2: data queue 2
|
||||
* @IEEE80211_TX_QUEUE_DATA3: data queue 3
|
||||
* @IEEE80211_TX_QUEUE_DATA4: data queue 4
|
||||
* @IEEE80211_TX_QUEUE_SVP: ??
|
||||
* @NUM_TX_DATA_QUEUES: number of data queues
|
||||
* @IEEE80211_TX_QUEUE_AFTER_BEACON: transmit queue for frames to be
|
||||
* sent after a beacon
|
||||
* @IEEE80211_TX_QUEUE_BEACON: transmit queue for beacon frames
|
||||
*/
|
||||
enum ieee80211_tx_queue {
|
||||
IEEE80211_TX_QUEUE_DATA0,
|
||||
IEEE80211_TX_QUEUE_DATA1,
|
||||
IEEE80211_TX_QUEUE_DATA2,
|
||||
@ -271,7 +325,7 @@ struct ieee80211_rx_status {
|
||||
u64 mactime;
|
||||
int freq;
|
||||
int channel;
|
||||
int phymode;
|
||||
enum ieee80211_phymode phymode;
|
||||
int ssi;
|
||||
int signal;
|
||||
int noise;
|
||||
@ -280,25 +334,65 @@ struct ieee80211_rx_status {
|
||||
int flag;
|
||||
};
|
||||
|
||||
/* Transmit status. The low-level driver should provide this information
|
||||
* (the subset supported by hardware) to the 802.11 code for each transmit
|
||||
* frame. */
|
||||
/**
|
||||
* enum ieee80211_tx_status_flags - transmit status flags
|
||||
*
|
||||
* Status flags to indicate various transmit conditions.
|
||||
*
|
||||
* @IEEE80211_TX_STATUS_TX_FILTERED: The frame was not transmitted
|
||||
* because the destination STA was in powersave mode.
|
||||
*
|
||||
* @IEEE80211_TX_STATUS_ACK: Frame was acknowledged
|
||||
*/
|
||||
enum ieee80211_tx_status_flags {
|
||||
IEEE80211_TX_STATUS_TX_FILTERED = 1<<0,
|
||||
IEEE80211_TX_STATUS_ACK = 1<<1,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ieee80211_tx_status - transmit status
|
||||
*
|
||||
* As much information as possible should be provided for each transmitted
|
||||
* frame with ieee80211_tx_status().
|
||||
*
|
||||
* @control: a copy of the &struct ieee80211_tx_control passed to the driver
|
||||
* in the tx() callback.
|
||||
*
|
||||
* @flags: transmit status flags, defined above
|
||||
*
|
||||
* @ack_signal: signal strength of the ACK frame
|
||||
*
|
||||
* @excessive_retries: set to 1 if the frame was retried many times
|
||||
* but not acknowledged
|
||||
*
|
||||
* @retry_count: number of retries
|
||||
*
|
||||
* @queue_length: ?? REMOVE
|
||||
* @queue_number: ?? REMOVE
|
||||
*/
|
||||
struct ieee80211_tx_status {
|
||||
/* copied ieee80211_tx_control structure */
|
||||
struct ieee80211_tx_control control;
|
||||
|
||||
#define IEEE80211_TX_STATUS_TX_FILTERED (1<<0)
|
||||
#define IEEE80211_TX_STATUS_ACK (1<<1) /* whether the TX frame was ACKed */
|
||||
u32 flags; /* tx staus flags defined above */
|
||||
|
||||
int ack_signal; /* measured signal strength of the ACK frame */
|
||||
int excessive_retries;
|
||||
int retry_count;
|
||||
|
||||
int queue_length; /* information about TX queue */
|
||||
u8 flags;
|
||||
bool excessive_retries;
|
||||
u8 retry_count;
|
||||
int ack_signal;
|
||||
int queue_length;
|
||||
int queue_number;
|
||||
};
|
||||
|
||||
/**
|
||||
* enum ieee80211_conf_flags - configuration flags
|
||||
*
|
||||
* Flags to define PHY configuration options
|
||||
*
|
||||
* @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time
|
||||
* @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported)
|
||||
*
|
||||
*/
|
||||
enum ieee80211_conf_flags {
|
||||
IEEE80211_CONF_SHORT_SLOT_TIME = 1<<0,
|
||||
IEEE80211_CONF_RADIOTAP = 1<<1,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ieee80211_conf - configuration of the device
|
||||
@ -306,31 +400,37 @@ struct ieee80211_tx_status {
|
||||
* This struct indicates how the driver shall configure the hardware.
|
||||
*
|
||||
* @radio_enabled: when zero, driver is required to switch off the radio.
|
||||
* TODO make a flag
|
||||
* @channel: IEEE 802.11 channel number
|
||||
* @freq: frequency in MHz
|
||||
* @channel_val: hardware specific channel value for the channel
|
||||
* @phymode: PHY mode to activate (REMOVE)
|
||||
* @chan: channel to switch to, pointer to the channel information
|
||||
* @mode: pointer to mode definition
|
||||
* @regulatory_domain: ??
|
||||
* @beacon_int: beacon interval (TODO make interface config)
|
||||
* @flags: configuration flags defined above
|
||||
* @power_level: transmit power limit for current regulatory domain in dBm
|
||||
* @antenna_max: maximum antenna gain
|
||||
* @antenna_sel_tx: transmit antenna selection, 0: default/diversity,
|
||||
* 1/2: antenna 0/1
|
||||
* @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx
|
||||
*/
|
||||
struct ieee80211_conf {
|
||||
int channel; /* IEEE 802.11 channel number */
|
||||
int freq; /* MHz */
|
||||
int channel_val; /* hw specific value for the channel */
|
||||
|
||||
int phymode; /* MODE_IEEE80211A, .. */
|
||||
enum ieee80211_phymode phymode;
|
||||
struct ieee80211_channel *chan;
|
||||
struct ieee80211_hw_mode *mode;
|
||||
unsigned int regulatory_domain;
|
||||
int radio_enabled;
|
||||
|
||||
int beacon_int;
|
||||
|
||||
#define IEEE80211_CONF_SHORT_SLOT_TIME (1<<0) /* use IEEE 802.11g Short Slot
|
||||
* Time */
|
||||
#define IEEE80211_CONF_RADIOTAP (1<<1) /* use radiotap if supported
|
||||
check this bit at RX time */
|
||||
u32 flags; /* configuration flags defined above */
|
||||
|
||||
u8 power_level; /* transmit power limit for current
|
||||
* regulatory domain; in dBm */
|
||||
u8 antenna_max; /* maximum antenna gain */
|
||||
|
||||
/* 0 = default/diversity, 1 = Ant0, 2 = Ant1 */
|
||||
u32 flags;
|
||||
u8 power_level;
|
||||
u8 antenna_max;
|
||||
u8 antenna_sel_tx;
|
||||
u8 antenna_sel_rx;
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user