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use core::ptr;
use core::sync::atomic::{Ordering, compiler_fence};
use crate::PacketHeader;
use crate::consts::TlPacketType;
#[derive(Copy, Clone)]
#[repr(C, packed)]
pub struct Cmd {
pub cmd_code: u16,
pub payload_len: u8,
pub payload: [u8; 255],
}
impl Default for Cmd {
fn default() -> Self {
Self {
cmd_code: 0,
payload_len: 0,
payload: [0u8; 255],
}
}
}
#[derive(Copy, Clone, Default)]
#[repr(C, packed)]
pub struct CmdSerial {
pub ty: u8,
pub cmd: Cmd,
}
#[derive(Copy, Clone, Default)]
#[repr(C, packed)]
pub struct CmdSerialStub {
pub ty: u8,
pub cmd_code: u16,
pub payload_len: u8,
}
#[derive(Copy, Clone, Default)]
#[repr(C, packed)]
pub struct CmdPacket {
pub header: PacketHeader,
pub cmdserial: CmdSerial,
}
impl CmdPacket {
pub unsafe fn write_into(cmd_buf: *mut CmdPacket, packet_type: TlPacketType, cmd_code: u16, payload: &[u8]) {
let p_cmd_serial = (cmd_buf as *mut u8).add(size_of::<PacketHeader>());
let p_payload = p_cmd_serial.add(size_of::<CmdSerialStub>());
ptr::write_unaligned(
p_cmd_serial as *mut _,
CmdSerialStub {
ty: packet_type as u8,
cmd_code,
payload_len: payload.len() as u8,
},
);
ptr::copy_nonoverlapping(payload as *const _ as *const u8, p_payload, payload.len());
compiler_fence(Ordering::Release);
}
}
#[derive(Copy, Clone)]
#[repr(C, packed)]
pub struct AclDataSerial {
pub ty: u8,
pub handle: u16,
pub length: u16,
pub acl_data: [u8; 1],
}
#[derive(Copy, Clone)]
#[repr(C, packed)]
pub struct AclDataSerialStub {
pub ty: u8,
pub handle: u16,
pub length: u16,
}
#[derive(Copy, Clone)]
#[repr(C, packed)]
pub struct AclDataPacket {
pub header: PacketHeader,
pub acl_data_serial: AclDataSerial,
}
impl AclDataPacket {
pub unsafe fn write_into(cmd_buf: *mut AclDataPacket, packet_type: TlPacketType, handle: u16, payload: &[u8]) {
let p_cmd_serial = (cmd_buf as *mut u8).add(size_of::<PacketHeader>());
let p_payload = p_cmd_serial.add(size_of::<AclDataSerialStub>());
ptr::write_unaligned(
p_cmd_serial as *mut _,
AclDataSerialStub {
ty: packet_type as u8,
handle: handle,
length: payload.len() as u16,
},
);
ptr::copy_nonoverlapping(payload as *const _ as *const u8, p_payload, payload.len());
compiler_fence(Ordering::Release);
}
}
|
