numa: add -numa node,memdev= option
[qemu.git] / include / net / tap.h
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"
30 #include "qapi-types.h"
31
32 int tap_enable(NetClientState *nc);
33 int tap_disable(NetClientState *nc);
34
35 int tap_get_fd(NetClientState *nc);
36
37 struct vhost_net;
38 struct vhost_net *tap_get_vhost_net(NetClientState *nc);
39
40 struct virtio_net_hdr
41 {
42 #define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset
43 #define VIRTIO_NET_HDR_F_DATA_VALID 2 // Csum is valid
44 uint8_t flags;
45 #define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame
46 #define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO)
47 #define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO)
48 #define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP
49 #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set
50 uint8_t gso_type;
51 uint16_t hdr_len;
52 uint16_t gso_size;
53 uint16_t csum_start;
54 uint16_t csum_offset;
55 };
56
57 struct virtio_net_hdr_mrg_rxbuf
58 {
59 struct virtio_net_hdr hdr;
60 uint16_t num_buffers; /* Number of merged rx buffers */
61 };
62
63 #endif /* QEMU_NET_TAP_H */