sdk/banjo/fuchsia.hardware.wlanphyimpl/wlanphy-impl.fidl

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fuchsia.hardware.wlanphyimpl;

using ddk.hw.wlan.wlaninfo;
using fuchsia.wlan.ieee80211 as ieee80211;
using zx;

/// Parameters to create an interface.
type WlanphyImplCreateIfaceReq = resource struct {
    /// The station role for this interface. A device may support multiple roles,
    /// but an interface is instantiated with a single role.
    role ddk.hw.wlan.wlaninfo.WlanInfoMacRole;

    /// A handle to the direct MLME channel, if supported by the driver.
    mlme_channel zx.handle:CHANNEL;

    /// Whether this iface creation request come with an initial station address.
    has_init_sta_addr bool;

    /// The initial station address set from configuration layer.
    init_sta_addr ieee80211.MacAddr;
};

/// Info about this WLAN PHY.
type WlanphyImplInfo = struct {
    /// Bitmask for MAC roles supported. For an interface, this will be a single
    /// value.
    supported_mac_roles ddk.hw.wlan.wlaninfo.WlanInfoMacRole;
};

const WLANPHY_ALPHA2_LEN uint8 = 2;

@packed
type WlanphyCountry = strict union {
    /// ISO Alpha-2 takes two octet alphabet characters.
    /// This needs to be expanded if at least one WLAN device driver or firmware
    /// requires more than two octets.
    1: alpha2 array<uint8, WLANPHY_ALPHA2_LEN>;
    2: val uint16;
};

@transport("Banjo")
@banjo_layout("ddk-protocol")
protocol WlanphyImpl {
    /// Get information about the capabilities of the physical device.
    Query() -> (struct {
        s zx.status;
        info WlanphyImplInfo;
    });

    /// Create a new interface with the specified role, returning the interface id.
    /// Some common error codes are:
    /// ZX_ERR_NO_RESOURCES: maximum number of interfaces have already been created
    /// ZX_ERR_NOT_SUPPORTED: device does not support the specified role
    CreateIface(resource struct {
        req WlanphyImplCreateIfaceReq;
    }) -> (struct {
        s zx.status;
        iface_id uint16;
    });

    /// Destroy the interface with the matching id.
    DestroyIface(struct {
        iface_id uint16;
    }) -> (struct {
        s zx.status;
    });

    /// Set country with a WlanphyCountry
    SetCountry(struct {
        country WlanphyCountry;
    }) -> (struct {
        s zx.status;
    });

    /// Set device to a world-safe country
    ClearCountry() -> (struct {
        s zx.status;
    });

    /// Read currently configured country. Implementations are advised to read the
    /// country directly from the firmware, where possible.
    GetCountry() -> (struct {
        s zx.status;
        country WlanphyCountry;
    });
};