vmware_vga: fix out of bounds and invalid rects updating
[qemu/ar7.git] / hw / virtio-net.h
blobd46fb9840f41812054d0b941ffaa63425a8b7043
1 /*
2 * Virtio Network Device
4 * Copyright IBM, Corp. 2007
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
14 #ifndef _QEMU_VIRTIO_NET_H
15 #define _QEMU_VIRTIO_NET_H
17 #include "virtio.h"
18 #include "pci/pci.h"
20 #define ETH_ALEN 6
22 /* from Linux's virtio_net.h */
24 /* The ID for virtio_net */
25 #define VIRTIO_ID_NET 1
27 /* The feature bitmap for virtio net */
28 #define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */
29 #define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */
30 #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */
31 #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */
32 #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */
33 #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */
34 #define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */
35 #define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */
36 #define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */
37 #define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */
38 #define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */
39 #define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */
40 #define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */
41 #define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */
42 #define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */
43 #define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */
44 #define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */
45 #define VIRTIO_NET_F_CTRL_RX_EXTRA 20 /* Extra RX mode control support */
47 #define VIRTIO_NET_S_LINK_UP 1 /* Link is up */
49 #define TX_TIMER_INTERVAL 150000 /* 150 us */
51 /* Limit the number of packets that can be sent via a single flush
52 * of the TX queue. This gives us a guaranteed exit condition and
53 * ensures fairness in the io path. 256 conveniently matches the
54 * length of the TX queue and shows a good balance of performance
55 * and latency. */
56 #define TX_BURST 256
58 typedef struct virtio_net_conf
60 uint32_t txtimer;
61 int32_t txburst;
62 char *tx;
63 } virtio_net_conf;
65 /* Maximum packet size we can receive from tap device: header + 64k */
66 #define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10))
68 struct virtio_net_config
70 /* The config defining mac address ($ETH_ALEN bytes) */
71 uint8_t mac[ETH_ALEN];
72 /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */
73 uint16_t status;
74 } QEMU_PACKED;
77 * Control virtqueue data structures
79 * The control virtqueue expects a header in the first sg entry
80 * and an ack/status response in the last entry. Data for the
81 * command goes in between.
83 struct virtio_net_ctrl_hdr {
84 uint8_t class;
85 uint8_t cmd;
88 typedef uint8_t virtio_net_ctrl_ack;
90 #define VIRTIO_NET_OK 0
91 #define VIRTIO_NET_ERR 1
94 * Control the RX mode, ie. promisucous, allmulti, etc...
95 * All commands require an "out" sg entry containing a 1 byte
96 * state value, zero = disable, non-zero = enable. Commands
97 * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature.
98 * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA.
100 #define VIRTIO_NET_CTRL_RX_MODE 0
101 #define VIRTIO_NET_CTRL_RX_MODE_PROMISC 0
102 #define VIRTIO_NET_CTRL_RX_MODE_ALLMULTI 1
103 #define VIRTIO_NET_CTRL_RX_MODE_ALLUNI 2
104 #define VIRTIO_NET_CTRL_RX_MODE_NOMULTI 3
105 #define VIRTIO_NET_CTRL_RX_MODE_NOUNI 4
106 #define VIRTIO_NET_CTRL_RX_MODE_NOBCAST 5
109 * Control the MAC filter table.
111 * The MAC filter table is managed by the hypervisor, the guest should
112 * assume the size is infinite. Filtering should be considered
113 * non-perfect, ie. based on hypervisor resources, the guest may
114 * received packets from sources not specified in the filter list.
116 * In addition to the class/cmd header, the TABLE_SET command requires
117 * two out scatterlists. Each contains a 4 byte count of entries followed
118 * by a concatenated byte stream of the ETH_ALEN MAC addresses. The
119 * first sg list contains unicast addresses, the second is for multicast.
120 * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature
121 * is available.
123 struct virtio_net_ctrl_mac {
124 uint32_t entries;
125 uint8_t macs[][ETH_ALEN];
127 #define VIRTIO_NET_CTRL_MAC 1
128 #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0
131 * Control VLAN filtering
133 * The VLAN filter table is controlled via a simple ADD/DEL interface.
134 * VLAN IDs not added may be filterd by the hypervisor. Del is the
135 * opposite of add. Both commands expect an out entry containing a 2
136 * byte VLAN ID. VLAN filterting is available with the
137 * VIRTIO_NET_F_CTRL_VLAN feature bit.
139 #define VIRTIO_NET_CTRL_VLAN 2
140 #define VIRTIO_NET_CTRL_VLAN_ADD 0
141 #define VIRTIO_NET_CTRL_VLAN_DEL 1
143 #define DEFINE_VIRTIO_NET_FEATURES(_state, _field) \
144 DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \
145 DEFINE_PROP_BIT("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \
146 DEFINE_PROP_BIT("guest_csum", _state, _field, VIRTIO_NET_F_GUEST_CSUM, true), \
147 DEFINE_PROP_BIT("gso", _state, _field, VIRTIO_NET_F_GSO, true), \
148 DEFINE_PROP_BIT("guest_tso4", _state, _field, VIRTIO_NET_F_GUEST_TSO4, true), \
149 DEFINE_PROP_BIT("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \
150 DEFINE_PROP_BIT("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \
151 DEFINE_PROP_BIT("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \
152 DEFINE_PROP_BIT("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \
153 DEFINE_PROP_BIT("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \
154 DEFINE_PROP_BIT("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \
155 DEFINE_PROP_BIT("host_ufo", _state, _field, VIRTIO_NET_F_HOST_UFO, true), \
156 DEFINE_PROP_BIT("mrg_rxbuf", _state, _field, VIRTIO_NET_F_MRG_RXBUF, true), \
157 DEFINE_PROP_BIT("status", _state, _field, VIRTIO_NET_F_STATUS, true), \
158 DEFINE_PROP_BIT("ctrl_vq", _state, _field, VIRTIO_NET_F_CTRL_VQ, true), \
159 DEFINE_PROP_BIT("ctrl_rx", _state, _field, VIRTIO_NET_F_CTRL_RX, true), \
160 DEFINE_PROP_BIT("ctrl_vlan", _state, _field, VIRTIO_NET_F_CTRL_VLAN, true), \
161 DEFINE_PROP_BIT("ctrl_rx_extra", _state, _field, VIRTIO_NET_F_CTRL_RX_EXTRA, true)
162 #endif