| /****************************************************************************** |
| * |
| * 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 - 2013 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
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| * The full GNU General Public License is included in this distribution |
| * in the file called COPYING. |
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| * 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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| * BSD LICENSE |
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| * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. |
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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_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 |
| |
| /** |
| * 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 |
| */ |
| struct iwl_scan_offload_blacklist { |
| u8 ssid[ETH_ALEN]; |
| u8 reported_rssi; |
| u8 reserved; |
| } __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 |
| */ |
| struct iwl_scan_offload_profile { |
| u8 ssid_index; |
| u8 unicast_cipher; |
| u8 auth_alg; |
| u8 network_type; |
| u8 band_selection; |
| u8 reserved[3]; |
| } __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 |
| */ |
| struct iwl_scan_offload_profile_cfg { |
| struct iwl_scan_offload_blacklist blacklist[IWL_SCAN_MAX_BLACKLIST_LEN]; |
| struct iwl_scan_offload_profile profiles[IWL_SCAN_MAX_PROFILES]; |
| u8 blacklist_len; |
| u8 num_profiles; |
| 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_FILTER_SSID: filter mode - upload every beacon or match |
| * ssid list. |
| * 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_FILTER_SSID = 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; |
| |
| #endif |