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a8ed73f7 MM |
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" |
a8ed73f7 | 31 | |
35277d14 SH |
32 | int tap_has_ufo(NetClientState *nc); |
33 | int tap_has_vnet_hdr(NetClientState *nc); | |
34 | int tap_has_vnet_hdr_len(NetClientState *nc, int len); | |
35 | void tap_using_vnet_hdr(NetClientState *nc, int using_vnet_hdr); | |
36 | void tap_set_offload(NetClientState *nc, int csum, int tso4, int tso6, int ecn, int ufo); | |
37 | void tap_set_vnet_hdr_len(NetClientState *nc, int len); | |
a8ed73f7 | 38 | |
35277d14 | 39 | int tap_get_fd(NetClientState *nc); |
95d528a2 | 40 | |
b202554c | 41 | struct vhost_net; |
35277d14 | 42 | struct vhost_net *tap_get_vhost_net(NetClientState *nc); |
b202554c | 43 | |
1422e32d PB |
44 | struct virtio_net_hdr |
45 | { | |
46 | #define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset | |
47 | #define VIRTIO_NET_HDR_F_DATA_VALID 2 // Csum is valid | |
48 | uint8_t flags; | |
49 | #define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame | |
50 | #define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO) | |
51 | #define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO) | |
52 | #define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP | |
53 | #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set | |
54 | uint8_t gso_type; | |
55 | uint16_t hdr_len; | |
56 | uint16_t gso_size; | |
57 | uint16_t csum_start; | |
58 | uint16_t csum_offset; | |
59 | }; | |
60 | ||
61 | struct virtio_net_hdr_mrg_rxbuf | |
62 | { | |
63 | struct virtio_net_hdr hdr; | |
64 | uint16_t num_buffers; /* Number of merged rx buffers */ | |
65 | }; | |
66 | ||
a8ed73f7 | 67 | #endif /* QEMU_NET_TAP_H */ |