Disable recv notifications until avail buffers exhausted
[qemu-kvm/amd-iommu.git] / net.h
blobafc29efa640f9f090e325b6e11022aec3f50727f
1 #ifndef QEMU_NET_H
2 #define QEMU_NET_H
4 #include <sys/uio.h>
6 /* VLANs support */
8 typedef ssize_t (IOReadvHandler)(void *, const struct iovec *, int);
10 typedef struct VLANClientState VLANClientState;
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];
24 struct VLANState {
25 int id;
26 VLANClientState *first_client;
27 struct VLANState *next;
28 unsigned int nb_guest_devs, nb_host_devs;
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);
43 void do_info_network(void);
45 int net_client_init(const char *device, const char *opts);
46 void net_client_uninit(NICInfo *nd);
48 /* NIC info */
50 #define MAX_NICS 8
52 struct NICInfo {
53 uint8_t macaddr[6];
54 const char *model;
55 VLANState *vlan;
56 int devfn;
57 int used;
60 extern int nb_nics;
61 extern NICInfo nd_table[MAX_NICS];
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);
70 #endif