/****************************************************************************** * * 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 * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * 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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *****************************************************************************/ #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 TUs, max out of serving channel time * @suspend_time: how long to pause scan when returning to service channel: * bits 0-19: beacon interal in TUs (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 TUs to be out of assoceated channel * @suspend_time: pause scan this TUs 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