text: #ifndef QEMU_NET_H
  #define QEMU_NET_H
  
  #include "qemu-queue.h"
  #include "qemu-common.h"
  #include "qdict.h"
  #include "qemu-option.h"
  #include "net/queue.h"
  
  struct MACAddr {
      uint8_t a[6];
  };
  
  /* qdev nic properties */
  
  typedef struct NICConf {
      MACAddr macaddr;
      VLANState *vlan;
      VLANClientState *peer;
  } NICConf;
  
  #define DEFINE_NIC_PROPERTIES(_state, _conf)                            \
      DEFINE_PROP_MACADDR("mac",   _state, _conf.macaddr),                \
      DEFINE_PROP_VLAN("vlan",     _state, _conf.vlan),                   \
      DEFINE_PROP_NETDEV("netdev", _state, _conf.peer)
  
  /* VLANs support */
  
  typedef enum {
      NET_CLIENT_TYPE_NONE,
      NET_CLIENT_TYPE_NIC,
      NET_CLIENT_TYPE_SLIRP,
      NET_CLIENT_TYPE_TAP,
      NET_CLIENT_TYPE_SOCKET,
      NET_CLIENT_TYPE_VDE,
      NET_CLIENT_TYPE_DUMP
  } net_client_type;
  
  typedef void (NetPoll)(VLANClientState *, bool enable);
  typedef int (NetCanReceive)(VLANClientState *);
  typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t);
  typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int);
  typedef void (NetCleanup) (VLANClientState *);
  typedef void (LinkStatusChanged)(VLANClientState *);
  
  typedef struct NetClientInfo {
      net_client_type type;
      size_t size;
      NetReceive *receive;
      NetReceive *receive_raw;
      NetReceiveIOV *receive_iov;
      NetCanReceive *can_receive;
      NetCleanup *cleanup;
      LinkStatusChanged *link_status_changed;
      NetPoll *poll;
  } NetClientInfo;
  
  struct VLANClientState {
      NetClientInfo *info;
      int link_down;
      QTAILQ_ENTRY(VLANClientState) next;
      struct VLANState *vlan;
      VLANClientState *peer;
      NetQueue *send_queue;
      char *model;
      char *name;
      char info_str[256];
      unsigned receive_disabled : 1;
  };
  
  typedef struct NICState {
      VLANClientState nc;
      NICConf *conf;
      void *opaque;
      bool peer_deleted;
  } NICState;
  
  struct VLANState {
      int id;
      QTAILQ_HEAD(, VLANClientState) clients;
      QTAILQ_ENTRY(VLANState) next;
      NetQueue *send_queue;
  };
  
  VLANState *qemu_find_vlan(int id, int allocate);
  VLANClientState *qemu_find_netdev(const char *id);
  VLANClientState *qemu_new_net_client(NetClientInfo *info,
                                       VLANState *vlan,
                                       VLANClientState *peer,
                                       const char *model,
                                       const char *name);
  NICState *qemu_new_nic(NetClientInfo *info,
                         NICConf *conf,
                         const char *model,
                         const char *name,
                         void *opaque);
  void qemu_del_vlan_client(VLANClientState *vc);
  VLANClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
                                                 const char *client_str);
  typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
  void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
  int qemu_can_send_packet(VLANClientState *vc);
  ssize_t qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov,
                            int iovcnt);
  ssize_t qemu_sendv_packet_async(VLANClientState *vc, const struct iovec *iov,
                                  int iovcnt, NetPacketSent *sent_cb);
  void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size);
  ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size);
  ssize_t qemu_send_packet_async(VLANClientState *vc, const uint8_t *buf,
                                 int size, NetPacketSent *sent_cb);
  void qemu_purge_queued_packets(VLANClientState *vc);
  void qemu_flush_queued_packets(VLANClientState *vc);
  void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]);
  void qemu_macaddr_default_if_unset(MACAddr *macaddr);
  int qemu_show_nic_models(const char *arg, const char *const *models);
  void qemu_check_nic_model(NICInfo *nd, const char *model);
  int qemu_find_nic_model(NICInfo *nd, const char * const *models,
                          const char *default_model);
  
  void do_info_network(Monitor *mon);
  int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data);
  
  /* NIC info */
  
  #define MAX_NICS 8
  
  struct NICInfo {
      uint8_t macaddr[6];
      char *model;
      char *name;
      char *devaddr;
      VLANState *vlan;
      VLANClientState *netdev;
      int used;
      int nvectors;
  };
  
  extern int nb_nics;
  extern NICInfo nd_table[MAX_NICS];
  extern int default_net;
  
  /* BT HCI info */
  
  struct HCIInfo {
      int (*bdaddr_set)(struct HCIInfo *hci, const uint8_t *bd_addr);
      void (*cmd_send)(struct HCIInfo *hci, const uint8_t *data, int len);
      void (*sco_send)(struct HCIInfo *hci, const uint8_t *data, int len);
      void (*acl_send)(struct HCIInfo *hci, const uint8_t *data, int len);
      void *opaque;
      void (*evt_recv)(void *opaque, const uint8_t *data, int len);
      void (*acl_recv)(void *opaque, const uint8_t *data, int len);
  };
  
  struct HCIInfo *qemu_next_hci(void);
  
  /* from net.c */
  extern const char *legacy_tftp_prefix;
  extern const char *legacy_bootp_filename;
  
  int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev);
  int net_client_parse(QemuOptsList *opts_list, const char *str);
  int net_init_clients(void);
  void net_check_clients(void);
  void net_cleanup(void);
  void net_host_device_add(Monitor *mon, const QDict *qdict);
  void net_host_device_remove(Monitor *mon, const QDict *qdict);
  int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data);
  int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
  
  #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
  #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
  #ifdef __sun__
  #define SMBD_COMMAND "/usr/sfw/sbin/smbd"
  #else
  #define SMBD_COMMAND "/usr/sbin/smbd"
  #endif
  
  void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
  
  int net_handle_fd_param(Monitor *mon, const char *param);
  
  #endif
  