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-rw-r--r--include/linux/virtio_net.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h
index 3efa86c3ecb3..242348bb3766 100644
--- a/include/linux/virtio_net.h
+++ b/include/linux/virtio_net.h
@@ -22,11 +22,19 @@
22#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ 22#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */
23#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ 23#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */
24#define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */ 24#define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */
25#define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */
26#define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */
27#define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */
28#define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */
29
30#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */
25 31
26struct virtio_net_config 32struct virtio_net_config
27{ 33{
28 /* The config defining mac address (if VIRTIO_NET_F_MAC) */ 34 /* The config defining mac address (if VIRTIO_NET_F_MAC) */
29 __u8 mac[6]; 35 __u8 mac[6];
36 /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */
37 __u16 status;
30} __attribute__((packed)); 38} __attribute__((packed));
31 39
32/* This is the first element of the scatter-gather list. If you don't 40/* This is the first element of the scatter-gather list. If you don't
@@ -54,4 +62,67 @@ struct virtio_net_hdr_mrg_rxbuf {
54 __u16 num_buffers; /* Number of merged rx buffers */ 62 __u16 num_buffers; /* Number of merged rx buffers */
55}; 63};
56 64
65/*
66 * Control virtqueue data structures
67 *
68 * The control virtqueue expects a header in the first sg entry
69 * and an ack/status response in the last entry. Data for the
70 * command goes in between.
71 */
72struct virtio_net_ctrl_hdr {
73 __u8 class;
74 __u8 cmd;
75} __attribute__((packed));
76
77typedef __u8 virtio_net_ctrl_ack;
78
79#define VIRTIO_NET_OK 0
80#define VIRTIO_NET_ERR 1
81
82/*
83 * Control the RX mode, ie. promisucous and allmulti. PROMISC and
84 * ALLMULTI commands require an "out" sg entry containing a 1 byte
85 * state value, zero = disable, non-zero = enable. These commands
86 * are supported with the VIRTIO_NET_F_CTRL_RX feature.
87 */
88#define VIRTIO_NET_CTRL_RX 0
89 #define VIRTIO_NET_CTRL_RX_PROMISC 0
90 #define VIRTIO_NET_CTRL_RX_ALLMULTI 1
91
92/*
93 * Control the MAC filter table.
94 *
95 * The MAC filter table is managed by the hypervisor, the guest should
96 * assume the size is infinite. Filtering should be considered
97 * non-perfect, ie. based on hypervisor resources, the guest may
98 * received packets from sources not specified in the filter list.
99 *
100 * In addition to the class/cmd header, the TABLE_SET command requires
101 * two out scatterlists. Each contains a 4 byte count of entries followed
102 * by a concatenated byte stream of the ETH_ALEN MAC addresses. The
103 * first sg list contains unicast addresses, the second is for multicast.
104 * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature
105 * is available.
106 */
107struct virtio_net_ctrl_mac {
108 __u32 entries;
109 __u8 macs[][ETH_ALEN];
110} __attribute__((packed));
111
112#define VIRTIO_NET_CTRL_MAC 1
113 #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0
114
115/*
116 * Control VLAN filtering
117 *
118 * The VLAN filter table is controlled via a simple ADD/DEL interface.
119 * VLAN IDs not added may be filterd by the hypervisor. Del is the
120 * opposite of add. Both commands expect an out entry containing a 2
121 * byte VLAN ID. VLAN filterting is available with the
122 * VIRTIO_NET_F_CTRL_VLAN feature bit.
123 */
124#define VIRTIO_NET_CTRL_VLAN 2
125 #define VIRTIO_NET_CTRL_VLAN_ADD 0
126 #define VIRTIO_NET_CTRL_VLAN_DEL 1
127
57#endif /* _LINUX_VIRTIO_NET_H */ 128#endif /* _LINUX_VIRTIO_NET_H */