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1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2009 Red Hat, Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26#ifndef QEMU_NET_TAP_H
27#define QEMU_NET_TAP_H
28
29#include "qemu-common.h"
6687b79d 30#include "qapi-types.h"
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31
32#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
33#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
34
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35int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required);
36
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37ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen);
38
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39int tap_has_ufo(NetClientState *nc);
40int tap_has_vnet_hdr(NetClientState *nc);
41int tap_has_vnet_hdr_len(NetClientState *nc, int len);
42void tap_using_vnet_hdr(NetClientState *nc, int using_vnet_hdr);
43void tap_set_offload(NetClientState *nc, int csum, int tso4, int tso6, int ecn, int ufo);
44void tap_set_vnet_hdr_len(NetClientState *nc, int len);
a8ed73f7 45
08c573a8 46int tap_set_sndbuf(int fd, const NetdevTapOptions *tap);
dc69004c 47int tap_probe_vnet_hdr(int fd);
445d892f 48int tap_probe_vnet_hdr_len(int fd, int len);
9c282718 49int tap_probe_has_ufo(int fd);
1faac1f7 50void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo);
445d892f 51void tap_fd_set_vnet_hdr_len(int fd, int len);
15ac913b 52
35277d14 53int tap_get_fd(NetClientState *nc);
95d528a2 54
b202554c 55struct vhost_net;
35277d14 56struct vhost_net *tap_get_vhost_net(NetClientState *nc);
b202554c 57
a8ed73f7 58#endif /* QEMU_NET_TAP_H */