config-wsl: enable CMAC, zstd firmware, and MediaTek BT USB#1
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Looks good!
I'm not sure what WSL2's commit message standards are, but to lower friction you should look at existing commits. The one thing you definitely need to add is the Signed-off-by line. Your summary line is already conventional commit.
Here's an example:
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Enable features needed for USB Bluetooth dongles attached to WSL2 via usbipd. CONFIG_CRYPTO_CMAC=y: On WSL2 a kernel-initiated request_module() runs via usermodehelper in the init namespace, which cannot reach the distro's /sbin/modprobe or /lib/modules, so autoloading cmac fails and LE Secure Connections crypto is unavailable. Building it in avoids the request_module(). CONFIG_FW_LOADER_COMPRESS_ZSTD=y: support zstd-compressed firmware as shipped by current linux-firmware (CONFIG_ZSTD_DECOMPRESS was already enabled). CONFIG_BT_HCIBTUSB_MTK=y (selects CONFIG_BT_MTK=m): MediaTek USB Bluetooth controller support. Signed-off-by: Elias Calzado Carvajal <elias@intercreate.io>
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Looks good, approved for upstream PR.
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Enable features needed for USB Bluetooth dongles attached to WSL2 via usbipd:
CONFIG_CRYPTO_CMAC=y: build CMAC in rather than as a module. On WSL2 a kernel-initiated request_module() runs via usermodehelper in the init namespace, which cannot reach the distro's /sbin/modprobe or /lib/modules, so autoloading cmac fails and LE Secure Connections crypto is unavailable. Building it in avoids the request_module().
CONFIG_FW_LOADER_COMPRESS_ZSTD=y: support zstd-compressed firmware as shipped by current linux-firmware (CONFIG_ZSTD_DECOMPRESS was already enabled).
CONFIG_BT_HCIBTUSB_MTK=y (selects CONFIG_BT_MTK=m): MediaTek USB Bluetooth controller support.