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Wifi: Filter usable channels by Coex, Concurrency am: 33adbb23f6

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Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/libhardware_legacy/+/13549368

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I29cdd327f62a58d73cd1cdfee1489a2db5dbaa9d
This commit is contained in:
Kumar Anand 2021-02-17 03:27:40 +00:00 committed by Automerger Merge Worker
commit 2307f5369f
1 changed files with 54 additions and 14 deletions
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68
include/hardware_legacy/wifi_hal.h
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@ -129,14 +129,52 @@ typedef struct {
} wifi_channel_spec;
/*
* wifi_usable_channel - modes supported on a channel and operating bandwidth
* wifi_usable_channel specifies a channel frequency, bandwidth, and bitmask
* of modes allowed on the channel.
*/
typedef struct {
wifi_channel freq; // channel frequency in MHz
wifi_channel_width width; // channel operating width (20, 40, 80, 160 etc.)
u32 iface_mode_mask; // BIT MASK of BIT(WIFI_INTERFACE_*) represented by wifi_interface_mode */
/* Channel frequency in MHz */
wifi_channel freq;
/* Channel operating width (20, 40, 80, 160 etc.) */
wifi_channel_width width;
/* BIT MASK of BIT(WIFI_INTERFACE_*) represented by |wifi_interface_mode|
* Bitmask does not represent concurrency.
* Examples:
* - If a channel is usable only for STA, then only the WIFI_INTERFACE_STA
* bit would be set for that channel.
* - If 5GHz SAP is not allowed, then none of the 5GHz channels will have
* WIFI_INTERFACE_SOFTAP bit set.
* Note: TDLS bit is set only if there is a STA connection. TDLS bit is set
* on non-STA channels only if TDLS off channel is supported.
*/
u32 iface_mode_mask;
} wifi_usable_channel;
/*
* wifi_usable_channel_filter
*/
typedef enum {
/* Filter Wifi channels that should be avoided due to cellular coex
* restrictions. Some Wifi channels can have extreme interference
* from/to cellular due to short frequency seperation with neighboring
* cellular channels or when there is harmonic and intermodulation
* interference. Channels which only have some performance degradation
* (e.g. power back off is sufficient to deal with coexistence issue)
* can be included and should not be filtered out.
*/
WIFI_USABLE_CHANNEL_FILTER_CELLULAR_COEXISTENCE = 1 << 0,
/* Filter channels due to concurrency state.
* Examples:
* - 5GHz SAP operation may be supported in standalone mode, but if
* there is STA connection on 5GHz DFS channel, none of the 5GHz
* channels are usable for SAP if device does not support DFS SAP mode.
* - P2P GO may not be supported on indoor channels in EU during
* standalone mode but if there is a STA connection on indoor channel,
* P2P GO may be supported by some vendors on the same STA channel.
*/
WIFI_USABLE_CHANNEL_FILTER_CONCURRENCY = 1 << 1,
} wifi_usable_channel_filter;
typedef enum {
WIFI_SUCCESS = 0,
WIFI_ERROR_NONE = 0,
@ -821,20 +859,22 @@ typedef struct {
* @param band_mask BIT MASK of WLAN_MAC* as represented by |wlan_mac_band|
* @param iface_mode_mask BIT MASK of BIT(WIFI_INTERFACE_*) represented by
* |wifi_interface_mode|. Bitmask respresents all the modes that the
* caller is interested in (e.g. STA, SAP, CLI, GO, TDLS, NAN).
* Note: Bitmask does not represent concurrency matrix.
* caller is interested in (e.g. STA, SAP, WFD-CLI, WFD-GO, TDLS, NAN).
* Note: Bitmask does not represent concurrency matrix. If the caller
* is interested in CLI, GO modes, the iface_mode_mask would be set
* to WIFI_INTERFACE_P2P_CLIENT|WIFI_INTERFACE_P2P_GO.
* @param filter_mask BIT MASK of WIFI_USABLE_CHANNEL_FILTER_* represented by
* |wifi_usable_channel_filter|. Indicates if the channel list should
* be filtered based on additional criteria. If filter_mask is not
* specified, driver should return list of usable channels purely
* based on regulatory constraints.
* @param max_size maximum number of |wifi_usable_channel|
* @param size actual number of |wifi_usable_channel|
* @param size actual number of |wifi_usable_channel| entries returned by driver
* @param channels list of usable channels represented by |wifi_usable_channel|
* Each |wifi_usable_channel| entry specifies a channel frequency,
* bandwidth, and bitmask of modes (e.g. STA, SAP, CLI, GO, TDLS, NAN)
* allowed on the channel.
* Note: TDLS bit is set only if there is a STA connection. TDLS bit is
* set on non-STA channels only if TDLS off channel is supported.
* Note: Bitmask in |wifi_usable_channel| does not represent concurrency.
*/
wifi_error (*wifi_get_usable_channels)(wifi_handle handle, u32 band_mask, u32 iface_mode_mask,
u32 max_size, u32* size, wifi_usable_channel* channels);
u32 filter_mask, u32 max_size, u32* size,
wifi_usable_channel* channels);
/*
* when adding new functions make sure to add stubs in