1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
*------------------------------------------------------------------
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#ifndef _VNET_DEVICES_VIRTIO_VIRTIO_H_
#define _VNET_DEVICES_VIRTIO_VIRTIO_H_
#define foreach_virtio_net_features \
_ (VIRTIO_NET_F_CSUM, 0) /* Host handles pkts w/ partial csum */ \
_ (VIRTIO_NET_F_GUEST_CSUM, 1) /* Guest handles pkts w/ partial csum */ \
_ (VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, 2) /* Dynamic offload configuration. */ \
_ (VIRTIO_NET_F_MTU, 3) /* Initial MTU advice. */ \
_ (VIRTIO_NET_F_MAC, 5) /* Host has given MAC address. */ \
_ (VIRTIO_NET_F_GSO, 6) /* Host handles pkts w/ any GSO. */ \
_ (VIRTIO_NET_F_GUEST_TSO4, 7) /* Guest can handle TSOv4 in. */ \
_ (VIRTIO_NET_F_GUEST_TSO6, 8) /* Guest can handle TSOv6 in. */ \
_ (VIRTIO_NET_F_GUEST_ECN, 9) /* Guest can handle TSO[6] w/ ECN in. */ \
_ (VIRTIO_NET_F_GUEST_UFO, 10) /* Guest can handle UFO in. */ \
_ (VIRTIO_NET_F_HOST_TSO4, 11) /* Host can handle TSOv4 in. */ \
_ (VIRTIO_NET_F_HOST_TSO6, 12) /* Host can handle TSOv6 in. */ \
_ (VIRTIO_NET_F_HOST_ECN, 13) /* Host can handle TSO[6] w/ ECN in. */ \
_ (VIRTIO_NET_F_HOST_UFO, 14) /* Host can handle UFO in. */ \
_ (VIRTIO_NET_F_MRG_RXBUF, 15) /* Host can merge receive buffers. */ \
_ (VIRTIO_NET_F_STATUS, 16) /* virtio_net_config.status available */ \
_ (VIRTIO_NET_F_CTRL_VQ, 17) /* Control channel available */ \
_ (VIRTIO_NET_F_CTRL_RX, 18) /* Control channel RX mode support */ \
_ (VIRTIO_NET_F_CTRL_VLAN, 19) /* Control channel VLAN filtering */ \
_ (VIRTIO_NET_F_CTRL_RX_EXTRA, 20) /* Extra RX mode control support */ \
_ (VIRTIO_NET_F_GUEST_ANNOUNCE, 21) /* Guest can announce device on the network */ \
_ (VIRTIO_NET_F_MQ, 22) /* Device supports Receive Flow Steering */ \
_ (VIRTIO_NET_F_CTRL_MAC_ADDR, 23) /* Set MAC address */ \
_ (VIRTIO_F_NOTIFY_ON_EMPTY, 24) \
_ (VHOST_F_LOG_ALL, 26) /* Log all write descriptors */ \
_ (VIRTIO_F_ANY_LAYOUT, 27) /* Can the device handle any descripor layout */ \
_ (VIRTIO_RING_F_INDIRECT_DESC, 28) /* Support indirect buffer descriptors */ \
_ (VIRTIO_RING_F_EVENT_IDX, 29) /* The Guest publishes the used index for which it expects an interrupt \
* at the end of the avail ring. Host should ignore the avail->flags field. */ \
/* The Host publishes the avail index for which it expects a kick \
* at the end of the used ring. Guest should ignore the used->flags field. */ \
_ (VHOST_USER_F_PROTOCOL_FEATURES, 30) \
_ (VIRTIO_F_VERSION_1, 32)
#define foreach_virtio_if_flag \
_(0, ADMIN_UP, "admin-up") \
_(1, DELETING, "deleting")
typedef enum
{
#define _(a, b, c) VIRTIO_IF_FLAG_##b = (1 << a),
foreach_virtio_if_flag
#undef _
} virtio_if_flag_t;
typedef enum
{
VIRTIO_IF_TYPE_TAP,
VIRTIO_IF_N_TYPES,
} virtio_if_type_t;
typedef struct
{
struct vring_desc *desc;
struct vring_used *used;
struct vring_avail *avail;
u16 desc_in_use;
u16 desc_next;
int kick_fd;
int call_fd;
u16 size;
#define VIRTIO_RING_FLAG_MASK_INT 1
u32 flags;
u32 call_file_index;
u32 *buffers;
u16 last_used_idx;
} virtio_vring_t;
typedef struct
{
u32 flags;
u32 id;
u32 dev_instance;
u32 hw_if_index;
u32 sw_if_index;
u32 per_interface_next_index;
int fd;
int tap_fd;
virtio_vring_t *vrings;
u64 features, remote_features;
virtio_if_type_t type;
u16 tx_ring_sz;
u16 rx_ring_sz;
u8 *host_if_name;
u8 *net_ns;
u8 *host_bridge;
u8 host_mac_addr[6];
ip4_address_t host_ip4_addr;
u8 host_ip4_prefix_len;
ip6_address_t host_ip6_addr;
u8 host_ip6_prefix_len;
int ifindex;
} virtio_if_t;
typedef struct
{
virtio_if_t *interfaces;
} virtio_main_t;
extern virtio_main_t virtio_main;
extern vnet_device_class_t virtio_device_class;
extern vlib_node_registration_t virtio_input_node;
clib_error_t *virtio_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 idx,
u16 sz);
clib_error_t *virtio_vring_free (virtio_if_t * vif, u32 idx);
#endif /* _VNET_DEVICES_VIRTIO_VIRTIO_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
