/* VirtIO ABI version, this must match exactly. */
#define VIRTIO_PCI_ABI_VERSION 0
+/* VirtIO device IDs. */
+#define VIRTIO_ID_NETWORK 0x01
+
/*
* Vector value used to disable MSI for queue.
* define in include/linux/virtio_pci.h
- * #define VIRTIO_MSI_NO_VECTOR 0xFFFF
*/
+#define VIRTIO_MSI_NO_VECTOR 0xFFFF
/* The bit of the ISR which indicates a device has an interrupt. */
#define VIRTIO_PCI_ISR_INTR 0x1
/* The bit of the ISR which indicates a device configuration change. */
#define VIRTIO_PCI_ISR_CONFIG 0x2
-/* VirtIO device IDs. */
-#define VIRTIO_ID_NETWORK 0x01
-
/* Status byte for guest to report progress. */
#define foreach_virtio_config_status_flags \
_ (VIRTIO_CONFIG_STATUS_RESET, 0x00) \
#undef _
} virtio_config_status_flags_t;
-#define foreach_virtio_net_feature_flags \
- _ (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 VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2
-#define VIRTIO_NET_F_MTU 3
+
#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */
#define VIRTIO_NET_S_ANNOUNCE 2 /* Announcement is needed */
+#define VIRTIO_NET_OK 0
+#define VIRTIO_NET_ERR 1
+
+/* If multiqueue is provided by host, then we support it. */
+#define VIRTIO_NET_CTRL_MQ 4
+#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0
+#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
+#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
+
/*
* Control network offloads
* Reconfigures the network offloads that Guest can handle.
typedef struct
{
- struct virtio_pci_cap cap;
+ virtio_pci_cap_t cap;
u32 notify_off_multiplier; /* Multiplier for queue_notify_off. */
} virtio_pci_notify_cap_t;
u16 mtu;
} virtio_net_config_t;
-typedef struct
-{
- u64 addr;
- u32 len;
- u16 flags;
- u16 next;
-} vring_desc_t;
-
-typedef struct
+/*
+ * Control virtqueue data structures
+ *
+ * The control virtqueue expects a header in the first sg entry
+ * and an ack/status response in the last entry. Data for the
+ * command goes in between.
+ */
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct
{
- u16 flags;
- u16 idx;
- u16 ring[0];
- /* u16 used_event; */
-} vring_avail_t;
+ u8 class;
+ u8 cmd;
+}) virtio_net_ctrl_hdr_t;
+/* *INDENT-ON* */
-typedef struct
-{
- u32 id;
- u32 len;
-} vring_used_elem_t;
+typedef u8 virtio_net_ctrl_ack_t;
typedef struct
{
- u16 flags;
- u16 idx;
- vring_used_elem_t ring[0];
- /* u16 avail_event; */
-} vring_used_t;
+ virtio_net_ctrl_hdr_t ctrl;
+ virtio_net_ctrl_ack_t status;
+ u8 data[1024];
+} virtio_ctrl_msg_t;
typedef struct _virtio_pci_func
{
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