- 根目录:
- drivers
- net
- wireless
- iwlwifi
- mvm
- fw-api-scan.h
/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
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*
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* General Public License for more details.
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
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*****************************************************************************/
#ifndef __fw_api_scan_h__
#define __fw_api_scan_h__
#include "fw-api.h"
/* Scan Commands, Responses, Notifications */
/* Masks for iwl_scan_channel.type flags */
#define SCAN_CHANNEL_TYPE_ACTIVE BIT(0)
#define SCAN_CHANNEL_NARROW_BAND BIT(22)
/* Max number of IEs for direct SSID scans in a command */
#define PROBE_OPTION_MAX 20
/**
* struct iwl_scan_channel - entry in REPLY_SCAN_CMD channel table
* @channel: band is selected by iwl_scan_cmd "flags" field
* @tx_gain: gain for analog radio
* @dsp_atten: gain for DSP
* @active_dwell: dwell time for active scan in TU, typically 5-50
* @passive_dwell: dwell time for passive scan in TU, typically 20-500
* @type: type is broken down to these bits:
* bit 0: 0 = passive, 1 = active
* bits 1-20: SSID direct bit map. If any of these bits is set then
* the corresponding SSID IE is transmitted in probe request
* (bit i adds IE in position i to the probe request)
* bit 22: channel width, 0 = regular, 1 = TGj narrow channel
*
* @iteration_count:
* @iteration_interval:
* This struct is used once for each channel in the scan list.
* Each channel can independently select:
* 1) SSID for directed active scans
* 2) Txpower setting (for rate specified within Tx command)
* 3) How long to stay on-channel (behavior may be modified by quiet_time,
* quiet_plcp_th, good_CRC_th)
*
* To avoid uCode errors, make sure the following are true (see comments
* under struct iwl_scan_cmd about max_out_time and quiet_time):
* 1) If using passive_dwell (i.e. passive_dwell != 0):
* active_dwell <= passive_dwell (< max_out_time if max_out_time != 0)
* 2) quiet_time <= active_dwell
* 3) If restricting off-channel time (i.e. max_out_time !=0):
* passive_dwell < max_out_time
* active_dwell < max_out_time
*/
struct iwl_scan_channel {
__le32 type;
__le16 channel;
__le16 iteration_count;
__le32 iteration_interval;
__le16 active_dwell;
__le16 passive_dwell;
} __packed; /* SCAN_CHANNEL_CONTROL_API_S_VER_1 */
/**
* struct iwl_ssid_ie - directed scan network information element
*
* Up to 20 of these may appear in REPLY_SCAN_CMD,
* selected by "type" bit field in struct iwl_scan_channel;
* each channel may select different ssids from among the 20 entries.
* SSID IEs get transmitted in reverse order of entry.
*/
struct iwl_ssid_ie {
u8 id;
u8 len;
u8 ssid[IEEE80211_MAX_SSID_LEN];
} __packed; /* SCAN_DIRECT_SSID_IE_API_S_VER_1 */
/**
* iwl_scan_flags - masks for scan command flags
*@SCAN_FLAGS_PERIODIC_SCAN:
*@SCAN_FLAGS_P2P_PUBLIC_ACTION_FRAME_TX:
*@SCAN_FLAGS_DELAYED_SCAN_LOWBAND:
*@SCAN_FLAGS_DELAYED_SCAN_HIGHBAND:
*@SCAN_FLAGS_FRAGMENTED_SCAN:
*@SCAN_FLAGS_PASSIVE2ACTIVE: use active scan on channels that was active
* in the past hour, even if they are marked as passive.
*/
enum iwl_scan_flags {
SCAN_FLAGS_PERIODIC_SCAN = BIT(0),
SCAN_FLAGS_P2P_PUBLIC_ACTION_FRAME_TX = BIT(1),
SCAN_FLAGS_DELAYED_SCAN_LOWBAND = BIT(2),
SCAN_FLAGS_DELAYED_SCAN_HIGHBAND = BIT(3),
SCAN_FLAGS_FRAGMENTED_SCAN = BIT(4),
SCAN_FLAGS_PASSIVE2ACTIVE = BIT(5),
};
/**
* enum iwl_scan_type - Scan types for scan command
* @SCAN_TYPE_FORCED:
* @SCAN_TYPE_BACKGROUND:
* @SCAN_TYPE_OS:
* @SCAN_TYPE_ROAMING:
* @SCAN_TYPE_ACTION:
* @SCAN_TYPE_DISCOVERY:
* @SCAN_TYPE_DISCOVERY_FORCED:
*/
enum iwl_scan_type {
SCAN_TYPE_FORCED = 0,
SCAN_TYPE_BACKGROUND = 1,
SCAN_TYPE_OS = 2,
SCAN_TYPE_ROAMING = 3,
SCAN_TYPE_ACTION = 4,
SCAN_TYPE_DISCOVERY = 5,
SCAN_TYPE_DISCOVERY_FORCED = 6,
}; /* SCAN_ACTIVITY_TYPE_E_VER_1 */
/* Maximal number of channels to scan */
#define MAX_NUM_SCAN_CHANNELS 0x24
/**
* struct iwl_scan_cmd - scan request command
* ( SCAN_REQUEST_CMD = 0x80 )
* @len: command length in bytes
* @scan_flags: scan flags from SCAN_FLAGS_*
* @channel_count: num of channels in channel list (1 - MAX_NUM_SCAN_CHANNELS)
* @quiet_time: in msecs, dwell this time for active scan on quiet channels
* @quiet_plcp_th: quiet PLCP threshold (channel is quiet if less than
* this number of packets were received (typically 1)
* @passive2active: is auto switching from passive to active during scan allowed
* @rxchain_sel_flags: RXON_RX_CHAIN_*
* @max_out_time: in usecs, max out of serving channel time
* @suspend_time: how long to pause scan when returning to service channel:
* bits 0-19: beacon interal in usecs (suspend before executing)
* bits 20-23: reserved
* bits 24-31: number of beacons (suspend between channels)
* @rxon_flags: RXON_FLG_*
* @filter_flags: RXON_FILTER_*
* @tx_cmd: for active scans (zero for passive), w/o payload,
* no RS so specify TX rate
* @direct_scan: direct scan SSIDs
* @type: one of SCAN_TYPE_*
* @repeats: how many time to repeat the scan
*/
struct iwl_scan_cmd {
__le16 len;
u8 scan_flags;
u8 channel_count;
__le16 quiet_time;
__le16 quiet_plcp_th;
__le16 passive2active;
__le16 rxchain_sel_flags;
__le32 max_out_time;
__le32 suspend_time;
/* RX_ON_FLAGS_API_S_VER_1 */
__le32 rxon_flags;
__le32 filter_flags;
struct iwl_tx_cmd tx_cmd;
struct iwl_ssid_ie direct_scan[PROBE_OPTION_MAX];
__le32 type;
__le32 repeats;
/*
* Probe request frame, followed by channel list.
*
* Size of probe request frame is specified by byte count in tx_cmd.
* Channel list follows immediately after probe request frame.
* Number of channels in list is specified by channel_count.
* Each channel in list is of type:
*
* struct iwl_scan_channel channels[0];
*
* NOTE: Only one band of channels can be scanned per pass. You
* must not mix 2.4GHz channels and 5.2GHz channels, and you must wait
* for one scan to complete (i.e. receive SCAN_COMPLETE_NOTIFICATION)
* before requesting another scan.
*/
u8 data[0];
} __packed; /* SCAN_REQUEST_FIXED_PART_API_S_VER_5 */
/* Response to scan request contains only status with one of these values */
#define SCAN_RESPONSE_OK 0x1
#define SCAN_RESPONSE_ERROR 0x2
/*
* SCAN_ABORT_CMD = 0x81
* When scan abort is requested, the command has no fields except the common
* header. The response contains only a status with one of these values.
*/
#define SCAN_ABORT_POSSIBLE 0x1
#define SCAN_ABORT_IGNORED 0x2 /* no pending scans */
/* TODO: complete documentation */
#define SCAN_OWNER_STATUS 0x1
#define MEASURE_OWNER_STATUS 0x2
/**
* struct iwl_scan_start_notif - notifies start of scan in the device
* ( SCAN_START_NOTIFICATION = 0x82 )
* @tsf_low: TSF timer (lower half) in usecs
* @tsf_high: TSF timer (higher half) in usecs
* @beacon_timer: structured as follows:
* bits 0:19 - beacon interval in usecs
* bits 20:23 - reserved (0)
* bits 24:31 - number of beacons
* @channel: which channel is scanned
* @band: 0 for 5.2 GHz, 1 for 2.4 GHz
* @status: one of *_OWNER_STATUS
*/
struct iwl_scan_start_notif {
__le32 tsf_low;
__le32 tsf_high;
__le32 beacon_timer;
u8 channel;
u8 band;
u8 reserved[2];
__le32 status;
} __packed; /* SCAN_START_NTF_API_S_VER_1 */
/* scan results probe_status first bit indicates success */
#define SCAN_PROBE_STATUS_OK 0
#define SCAN_PROBE_STATUS_TX_FAILED BIT(0)
/* error statuses combined with TX_FAILED */
#define SCAN_PROBE_STATUS_FAIL_TTL BIT(1)
#define SCAN_PROBE_STATUS_FAIL_BT BIT(2)
/* How many statistics are gathered for each channel */
#define SCAN_RESULTS_STATISTICS 1
/**
* enum iwl_scan_complete_status - status codes for scan complete notifications
* @SCAN_COMP_STATUS_OK: scan completed successfully
* @SCAN_COMP_STATUS_ABORT: scan was aborted by user
* @SCAN_COMP_STATUS_ERR_SLEEP: sending null sleep packet failed
* @SCAN_COMP_STATUS_ERR_CHAN_TIMEOUT: timeout before channel is ready
* @SCAN_COMP_STATUS_ERR_PROBE: sending probe request failed
* @SCAN_COMP_STATUS_ERR_WAKEUP: sending null wakeup packet failed
* @SCAN_COMP_STATUS_ERR_ANTENNAS: invalid antennas chosen at scan command
* @SCAN_COMP_STATUS_ERR_INTERNAL: internal error caused scan abort
* @SCAN_COMP_STATUS_ERR_COEX: medium was lost ot WiMax
* @SCAN_COMP_STATUS_P2P_ACTION_OK: P2P public action frame TX was successful
* (not an error!)
* @SCAN_COMP_STATUS_ITERATION_END: indicates end of one repeatition the driver
* asked for
* @SCAN_COMP_STATUS_ERR_ALLOC_TE: scan could not allocate time events
*/
enum iwl_scan_complete_status {
SCAN_COMP_STATUS_OK = 0x1,
SCAN_COMP_STATUS_ABORT = 0x2,
SCAN_COMP_STATUS_ERR_SLEEP = 0x3,
SCAN_COMP_STATUS_ERR_CHAN_TIMEOUT = 0x4,
SCAN_COMP_STATUS_ERR_PROBE = 0x5,
SCAN_COMP_STATUS_ERR_WAKEUP = 0x6,
SCAN_COMP_STATUS_ERR_ANTENNAS = 0x7,
SCAN_COMP_STATUS_ERR_INTERNAL = 0x8,
SCAN_COMP_STATUS_ERR_COEX = 0x9,
SCAN_COMP_STATUS_P2P_ACTION_OK = 0xA,
SCAN_COMP_STATUS_ITERATION_END = 0x0B,
SCAN_COMP_STATUS_ERR_ALLOC_TE = 0x0C,
};
/**
* struct iwl_scan_results_notif - scan results for one channel
* ( SCAN_RESULTS_NOTIFICATION = 0x83 )
* @channel: which channel the results are from
* @band: 0 for 5.2 GHz, 1 for 2.4 GHz
* @probe_status: SCAN_PROBE_STATUS_*, indicates success of probe request
* @num_probe_not_sent: # of request that weren't sent due to not enough time
* @duration: duration spent in channel, in usecs
* @statistics: statistics gathered for this channel
*/
struct iwl_scan_results_notif {
u8 channel;
u8 band;
u8 probe_status;
u8 num_probe_not_sent;
__le32 duration;
__le32 statistics[SCAN_RESULTS_STATISTICS];
} __packed; /* SCAN_RESULT_NTF_API_S_VER_2 */
/**
* struct iwl_scan_complete_notif - notifies end of scanning (all channels)
* ( SCAN_COMPLETE_NOTIFICATION = 0x84 )
* @scanned_channels: number of channels scanned (and number of valid results)
* @status: one of SCAN_COMP_STATUS_*
* @bt_status: BT on/off status
* @last_channel: last channel that was scanned
* @tsf_low: TSF timer (lower half) in usecs
* @tsf_high: TSF timer (higher half) in usecs
* @results: all scan results, only "scanned_channels" of them are valid
*/
struct iwl_scan_complete_notif {
u8 scanned_channels;
u8 status;
u8 bt_status;
u8 last_channel;
__le32 tsf_low;
__le32 tsf_high;
struct iwl_scan_results_notif results[MAX_NUM_SCAN_CHANNELS];
} __packed; /* SCAN_COMPLETE_NTF_API_S_VER_2 */
/* scan offload */
#define IWL_MAX_SCAN_CHANNELS 40
#define IWL_SCAN_MAX_BLACKLIST_LEN 64
#define IWL_SCAN_SHORT_BLACKLIST_LEN 16
#define IWL_SCAN_MAX_PROFILES 11
#define SCAN_OFFLOAD_PROBE_REQ_SIZE 512
/* Default watchdog (in MS) for scheduled scan iteration */
#define IWL_SCHED_SCAN_WATCHDOG cpu_to_le16(15000)
#define IWL_GOOD_CRC_TH_DEFAULT cpu_to_le16(1)
#define CAN_ABORT_STATUS 1
#define IWL_FULL_SCAN_MULTIPLIER 5
#define IWL_FAST_SCHED_SCAN_ITERATIONS 3
enum scan_framework_client {
SCAN_CLIENT_SCHED_SCAN = BIT(0),
SCAN_CLIENT_NETDETECT = BIT(1),
SCAN_CLIENT_ASSET_TRACKING = BIT(2),
};
/**
* struct iwl_scan_offload_cmd - SCAN_REQUEST_FIXED_PART_API_S_VER_6
* @scan_flags: see enum iwl_scan_flags
* @channel_count: channels in channel list
* @quiet_time: dwell time, in milisiconds, on quiet channel
* @quiet_plcp_th: quiet channel num of packets threshold
* @good_CRC_th: passive to active promotion threshold
* @rx_chain: RXON rx chain.
* @max_out_time: max uSec to be out of assoceated channel
* @suspend_time: pause scan this long when returning to service channel
* @flags: RXON flags
* @filter_flags: RXONfilter
* @tx_cmd: tx command for active scan; for 2GHz and for 5GHz.
* @direct_scan: list of SSIDs for directed active scan
* @scan_type: see enum iwl_scan_type.
* @rep_count: repetition count for each scheduled scan iteration.
*/
struct iwl_scan_offload_cmd {
__le16 len;
u8 scan_flags;
u8 channel_count;
__le16 quiet_time;
__le16 quiet_plcp_th;
__le16 good_CRC_th;
__le16 rx_chain;
__le32 max_out_time;
__le32 suspend_time;
/* RX_ON_FLAGS_API_S_VER_1 */
__le32 flags;
__le32 filter_flags;
struct iwl_tx_cmd tx_cmd[2];
/* SCAN_DIRECT_SSID_IE_API_S_VER_1 */
struct iwl_ssid_ie direct_scan[PROBE_OPTION_MAX];
__le32 scan_type;
__le32 rep_count;
} __packed;
enum iwl_scan_offload_channel_flags {
IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE = BIT(0),
IWL_SCAN_OFFLOAD_CHANNEL_NARROW = BIT(22),
IWL_SCAN_OFFLOAD_CHANNEL_FULL = BIT(24),
IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL = BIT(25),
};
/**
* iwl_scan_channel_cfg - SCAN_CHANNEL_CFG_S
* @type: bitmap - see enum iwl_scan_offload_channel_flags.
* 0: passive (0) or active (1) scan.
* 1-20: directed scan to i'th ssid.
* 22: channel width configuation - 1 for narrow.
* 24: full scan.
* 25: partial scan.
* @channel_number: channel number 1-13 etc.
* @iter_count: repetition count for the channel.
* @iter_interval: interval between two innteration on one channel.
* @dwell_time: entry 0 - active scan, entry 1 - passive scan.
*/
struct iwl_scan_channel_cfg {
__le32 type[IWL_MAX_SCAN_CHANNELS];
__le16 channel_number[IWL_MAX_SCAN_CHANNELS];
__le16 iter_count[IWL_MAX_SCAN_CHANNELS];
__le32 iter_interval[IWL_MAX_SCAN_CHANNELS];
u8 dwell_time[IWL_MAX_SCAN_CHANNELS][2];
} __packed;
/**
* iwl_scan_offload_cfg - SCAN_OFFLOAD_CONFIG_API_S
* @scan_cmd: scan command fixed part
* @channel_cfg: scan channel configuration
* @data: probe request frames (one per band)
*/
struct iwl_scan_offload_cfg {
struct iwl_scan_offload_cmd scan_cmd;
struct iwl_scan_channel_cfg channel_cfg;
u8 data[0];
} __packed;
/**
* iwl_scan_offload_blacklist - SCAN_OFFLOAD_BLACKLIST_S
* @ssid: MAC address to filter out
* @reported_rssi: AP rssi reported to the host
* @client_bitmap: clients ignore this entry - enum scan_framework_client
*/
struct iwl_scan_offload_blacklist {
u8 ssid[ETH_ALEN];
u8 reported_rssi;
u8 client_bitmap;
} __packed;
enum iwl_scan_offload_network_type {
IWL_NETWORK_TYPE_BSS = 1,
IWL_NETWORK_TYPE_IBSS = 2,
IWL_NETWORK_TYPE_ANY = 3,
};
enum iwl_scan_offload_band_selection {
IWL_SCAN_OFFLOAD_SELECT_2_4 = 0x4,
IWL_SCAN_OFFLOAD_SELECT_5_2 = 0x8,
IWL_SCAN_OFFLOAD_SELECT_ANY = 0xc,
};
/**
* iwl_scan_offload_profile - SCAN_OFFLOAD_PROFILE_S
* @ssid_index: index to ssid list in fixed part
* @unicast_cipher: encryption olgorithm to match - bitmap
* @aut_alg: authentication olgorithm to match - bitmap
* @network_type: enum iwl_scan_offload_network_type
* @band_selection: enum iwl_scan_offload_band_selection
* @client_bitmap: clients waiting for match - enum scan_framework_client
*/
struct iwl_scan_offload_profile {
u8 ssid_index;
u8 unicast_cipher;
u8 auth_alg;
u8 network_type;
u8 band_selection;
u8 client_bitmap;
u8 reserved[2];
} __packed;
/**
* iwl_scan_offload_profile_cfg - SCAN_OFFLOAD_PROFILES_CFG_API_S_VER_1
* @blaclist: AP list to filter off from scan results
* @profiles: profiles to search for match
* @blacklist_len: length of blacklist
* @num_profiles: num of profiles in the list
* @match_notify: clients waiting for match found notification
* @pass_match: clients waiting for the results
* @active_clients: active clients bitmap - enum scan_framework_client
* @any_beacon_notify: clients waiting for match notification without match
*/
struct iwl_scan_offload_profile_cfg {
struct iwl_scan_offload_profile profiles[IWL_SCAN_MAX_PROFILES];
u8 blacklist_len;
u8 num_profiles;
u8 match_notify;
u8 pass_match;
u8 active_clients;
u8 any_beacon_notify;
u8 reserved[2];
} __packed;
/**
* iwl_scan_offload_schedule - schedule of scan offload
* @delay: delay between iterations, in seconds.
* @iterations: num of scan iterations
* @full_scan_mul: number of partial scans before each full scan
*/
struct iwl_scan_offload_schedule {
u16 delay;
u8 iterations;
u8 full_scan_mul;
} __packed;
/*
* iwl_scan_offload_flags
*
* IWL_SCAN_OFFLOAD_FLAG_PASS_ALL: pass all results - no filtering.
* IWL_SCAN_OFFLOAD_FLAG_CACHED_CHANNEL: add cached channels to partial scan.
* IWL_SCAN_OFFLOAD_FLAG_ENERGY_SCAN: use energy based scan before partial scan
* on A band.
*/
enum iwl_scan_offload_flags {
IWL_SCAN_OFFLOAD_FLAG_PASS_ALL = BIT(0),
IWL_SCAN_OFFLOAD_FLAG_CACHED_CHANNEL = BIT(2),
IWL_SCAN_OFFLOAD_FLAG_ENERGY_SCAN = BIT(3),
};
/**
* iwl_scan_offload_req - scan offload request command
* @flags: bitmap - enum iwl_scan_offload_flags.
* @watchdog: maximum scan duration in TU.
* @delay: delay in seconds before first iteration.
* @schedule_line: scan offload schedule, for fast and regular scan.
*/
struct iwl_scan_offload_req {
__le16 flags;
__le16 watchdog;
__le16 delay;
__le16 reserved;
struct iwl_scan_offload_schedule schedule_line[2];
} __packed;
enum iwl_scan_offload_compleate_status {
IWL_SCAN_OFFLOAD_COMPLETED = 1,
IWL_SCAN_OFFLOAD_ABORTED = 2,
};
/**
* iwl_scan_offload_complete - SCAN_OFFLOAD_COMPLETE_NTF_API_S_VER_1
* @last_schedule_line: last schedule line executed (fast or regular)
* @last_schedule_iteration: last scan iteration executed before scan abort
* @status: enum iwl_scan_offload_compleate_status
*/
struct iwl_scan_offload_complete {
u8 last_schedule_line;
u8 last_schedule_iteration;
u8 status;
u8 reserved;
} __packed;
/**
* iwl_sched_scan_results - SCAN_OFFLOAD_MATCH_FOUND_NTF_API_S_VER_1
* @ssid_bitmap: SSIDs indexes found in this iteration
* @client_bitmap: clients that are active and wait for this notification
*/
struct iwl_sched_scan_results {
__le16 ssid_bitmap;
u8 client_bitmap;
u8 reserved;
};
#endif