From 47c50853bb9c5c35bf5c3eb00b712310ec2969e2 Mon Sep 17 00:00:00 2001 From: Igor Skalkin Date: Mon, 24 Oct 2022 15:40:33 +0200 Subject: virtio_bt: Fix alignment in configuration struct The current version of the configuration structure has unaligned 16-bit fields, but according to the specification [1], access to the configuration space must be aligned. Add a second, aligned version of the configuration structure and a new feature bit indicating that this version is being used. [1] https://docs.oasis-open.org/virtio/virtio/v1.1/virtio-v1.1.pdf Signed-off-by: Igor Skalkin Signed-off-by: Luiz Augusto von Dentz --- include/uapi/linux/virtio_bt.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/uapi') diff --git a/include/uapi/linux/virtio_bt.h b/include/uapi/linux/virtio_bt.h index a7bd48daa9a9..af798f4c9680 100644 --- a/include/uapi/linux/virtio_bt.h +++ b/include/uapi/linux/virtio_bt.h @@ -9,6 +9,7 @@ #define VIRTIO_BT_F_VND_HCI 0 /* Indicates vendor command support */ #define VIRTIO_BT_F_MSFT_EXT 1 /* Indicates MSFT vendor support */ #define VIRTIO_BT_F_AOSP_EXT 2 /* Indicates AOSP vendor support */ +#define VIRTIO_BT_F_CONFIG_V2 3 /* Use second version configuration */ enum virtio_bt_config_type { VIRTIO_BT_CONFIG_TYPE_PRIMARY = 0, @@ -28,4 +29,11 @@ struct virtio_bt_config { __u16 msft_opcode; } __attribute__((packed)); +struct virtio_bt_config_v2 { + __u8 type; + __u8 alignment; + __u16 vendor; + __u16 msft_opcode; +}; + #endif /* _UAPI_LINUX_VIRTIO_BT_H */ -- cgit v1.2.3