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 "qemu/osdep.h"
  14 #include "vmnet_int.h"
  15 #include "clients.h"
  16
  17 #include <vmnet/vmnet.h>
  18 #include <dispatch/dispatch.h>
  19
  20 /**
  21  *  From vmnet.framework documentation
  22  *
  23  *  Each read/write call allows up to 200 packets to be
  24  *  read or written for a maximum of 256KB.
  25  *
  26  *  Each packet written should be a complete
  27  *  ethernet frame.
  28  *
  29  *  https://developer.apple.com/documentation/vmnet
  30  */
  31 #define VMNET_PACKETS_LIMIT 200
  32
  33 typedef struct VmnetState {
  34     NetClientState nc;
  35     interface_ref vmnet_if;
  36
  37     uint64_t mtu;
  38     uint64_t max_packet_size;
  39
  40     dispatch_queue_t if_queue;
  41
  42     QEMUBH *send_bh;
  43
  44     struct vmpktdesc packets_buf[VMNET_PACKETS_LIMIT];
  45     int packets_send_current_pos;
  46     int packets_send_end_pos;
  47
  48     struct iovec iov_buf[VMNET_PACKETS_LIMIT];
  49 } VmnetState;
  50
  51 const char *vmnet_status_map_str(vmnet_return_t status);
  52
  53 int vmnet_if_create(NetClientState *nc,
  54                     xpc_object_t if_desc,
  55                     Error **errp);
  56
  57 ssize_t vmnet_receive_common(NetClientState *nc,
  58                              const uint8_t *buf,
  59                              size_t size);
  60
  61 void vmnet_cleanup_common(NetClientState *nc);
  62
  63 #endif /* VMNET_INT_H */