net/vmnet_int.h

   1 /*
   2  * vmnet_int.h
   3  *
   4  * Copyright(c) 2022 Vladislav Yaroshchuk <vladislav.yaroshchuk@jetbrains.com>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  *
   9  */
  10 #ifndef VMNET_INT_H
  11 #define VMNET_INT_H
  12
  13 #include "vmnet_int.h"
  14 #include "clients.h"
  15
  16 #include <vmnet/vmnet.h>
  17 #include <dispatch/dispatch.h>
  18
  19 /**
  20  *  From vmnet.framework documentation
  21  *
  22  *  Each read/write call allows up to 200 packets to be
  23  *  read or written for a maximum of 256KB.
  24  *
  25  *  Each packet written should be a complete
  26  *  ethernet frame.
  27  *
  28  *  https://developer.apple.com/documentation/vmnet
  29  */
  30 #define VMNET_PACKETS_LIMIT 200
  31
  32 typedef struct VmnetState {
  33     NetClientState nc;
  34     interface_ref vmnet_if;
  35
  36     uint64_t mtu;
  37     uint64_t max_packet_size;
  38
  39     dispatch_queue_t if_queue;
  40
  41     QEMUBH *send_bh;
  42
  43     struct vmpktdesc packets_buf[VMNET_PACKETS_LIMIT];
  44     int packets_send_current_pos;
  45     int packets_send_end_pos;
  46
  47     struct iovec iov_buf[VMNET_PACKETS_LIMIT];
  48 } VmnetState;
  49
  50 const char *vmnet_status_map_str(vmnet_return_t status);
  51
  52 int vmnet_if_create(NetClientState *nc,
  53                     xpc_object_t if_desc,
  54                     Error **errp);
  55
  56 ssize_t vmnet_receive_common(NetClientState *nc,
  57                              const uint8_t *buf,
  58                              size_t size);
  59
  60 void vmnet_cleanup_common(NetClientState *nc);
  61
  62 #endif /* VMNET_INT_H */