socket/datagram.h

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#pragma once
 
#include "../packet/datagram.h"
#include "../socket.h"
#include "../storage/packet_buf.h"
#include "vlcb/platform/interface.h"
#include <stdint.h>
 
#define VLCB_NET_SOCK_DGRAM_BUF(name, size)                                    \
  uint8_t                                                                      \
      name##_data[sizeof(VlcbPacketBuf) + sizeof(VlcbPacketDatagram) * size];  \
  vlcb_net_packetbuf_Init(name##_data, size, sizeof(VlcbPacketDatagram));      \
  VlcbPacketBuf *const name = (VlcbPacketBuf *const)name##_data;
 
typedef struct {
  _INTERFACE_IMPLEMENT(IVlcbNetSocket);
  VlcbPacketBuf *const rxBuf;
  VlcbPacketBuf *const txBuf;
} VlcbNetSocketDatagram;
 
VlcbNetSocketDatagram vlcb_net_sock_dgram_New(VlcbPacketBuf *const rxBuf,
                                              VlcbPacketBuf *const txBuf);
 
typedef enum {
  VLCB_NET_SOCK_DGRAM_SEND_ERR_OK = 0,
  VLCB_NET_SOCK_DGRAM_SEND_ERR_BUF_FULL,
  VLCB_NET_SOKC_DGRAM_SEND_ERR_COUNT,
} VlcbNetSocketDgramSendErr;
vlcb_error vlcb_net_sock_dgram_SendErrToStr(VlcbNetSocketDgramSendErr err);
 
typedef enum {
  VLCB_NET_SOCK_DGRAM_RECV_ERR_OK = 0,
  VLCB_NET_SOCK_DGRAM_RECV_ERR_WOULD_BLOCK,
  VLCB_NET_SOKC_DGRAM_RECV_ERR_COUNT,
} VlcbNetSocketDgramRecvErr;
vlcb_error vlcb_net_sock_dgram_SendErrToStr(VlcbNetSocketDgramSendErr err);
 
VlcbNetSocketDgramSendErr
vlcb_net_sock_dgram_Send(VlcbNetSocketDatagram *const sock,
                         const VlcbNetPacketDatagram *const packet);
VlcbNetSocketDgramRecvErr
vlcb_net_sock_dgram_Recv(VlcbNetSocketDatagram *const sock,
                         VlcbNetPacketDatagram *const packet);
 
static inline IVlcbNetSocket *const
vlcb_net_sock_dgram_Upcast(VlcbNetSocketDatagram *const sock) {
  return (IVlcbNetSocket *)sock;
}
 
typedef uint8_t VlcbNetSockDgramFlushMode;
enum VlcbNetSockDgramFlushMode {
  VLCB_NET_SOCK_DGRAM_FLUSH_BOTH,
  VLCB_NET_SOCK_DGRAM_FLUSH_TX,
  VLCB_NET_SOCK_DGRAM_FLUSH_RX,
};
 
void vlcb_net_sock_dgram_Flush(VlcbNetSocketDatagram *const sock,
                               const VlcbNetSockDgramFlushMode mode);