net.h

   1 #ifndef QEMU_NET_H
   2 #define QEMU_NET_H
   3
   4 #include <sys/uio.h>
   5
   6 /* VLANs support */
   7
   8 typedef ssize_t (IOReadvHandler)(void *, const struct iovec *, int);
   9
  10 typedef struct VLANClientState VLANClientState;
  11
  12 struct VLANClientState {
  13     IOReadHandler *fd_read;
  14     IOReadvHandler *fd_readv;
  15     /* Packets may still be sent if this returns zero.  It's used to
  16        rate-limit the slirp code.  */
  17     IOCanRWHandler *fd_can_read;
  18     void *opaque;
  19     struct VLANClientState *next;
  20     struct VLANState *vlan;
  21     char info_str[256];
  22 };
  23
  24 struct VLANState {
  25     int id;
  26     VLANClientState *first_client;
  27     struct VLANState *next;
  28     unsigned int nb_guest_devs, nb_host_devs;
  29 };
  30
  31 VLANState *qemu_find_vlan(int id);
  32 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
  33                                       IOReadHandler *fd_read,
  34                                       IOCanRWHandler *fd_can_read,
  35                                       void *opaque);
  36 void qemu_del_vlan_client(VLANClientState *vc);
  37 int qemu_can_send_packet(VLANClientState *vc);
  38 int qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size);
  39 ssize_t qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov,
  40                           int iovcnt);
  41 void qemu_handler_true(void *opaque);
  42
  43 void do_info_network(void);
  44
  45 int net_client_init(const char *device, const char *opts);
  46 void net_client_uninit(NICInfo *nd);
  47
  48 /* NIC info */
  49
  50 #define MAX_NICS 8
  51
  52 struct NICInfo {
  53     uint8_t macaddr[6];
  54     const char *model;
  55     VLANState *vlan;
  56     int devfn;
  57     int used;
  58 };
  59
  60 extern int nb_nics;
  61 extern NICInfo nd_table[MAX_NICS];
  62
  63 /* checksumming functions (net-checksum.c) */
  64 uint32_t net_checksum_add(int len, uint8_t *buf);
  65 uint16_t net_checksum_finish(uint32_t sum);
  66 uint16_t net_checksum_tcpudp(uint16_t length, uint16_t proto,
  67                              uint8_t *addrs, uint8_t *buf);
  68 void net_checksum_calculate(uint8_t *data, int length);
  69
  70 #endif