/* VirtIO ABI version, this must match exactly. */
#define VIRTIO_PCI_ABI_VERSION 0
-/*
- * VirtIO Header, located in BAR 0.
- */
-#define VIRTIO_PCI_HOST_FEATURES 0 /* host's supported features (32bit, RO) */
-#define VIRTIO_PCI_GUEST_FEATURES 4 /* guest's supported features (32, RW) */
-#define VIRTIO_PCI_QUEUE_PFN 8 /* physical address of VQ (32, RW) */
-#define VIRTIO_PCI_QUEUE_NUM 12 /* number of ring entries (16, RO) */
-#define VIRTIO_PCI_QUEUE_SEL 14 /* current VQ selection (16, RW) */
-#define VIRTIO_PCI_QUEUE_NOTIFY 16 /* notify host regarding VQ (16, RW) */
-#define VIRTIO_PCI_STATUS 18 /* device status register (8, RW) */
-#define VIRTIO_PCI_ISR 19 /* interrupt status register, reading
- * also clears the register (8, RO) */
-/* Only if MSIX is enabled: */
-#define VIRTIO_MSI_CONFIG_VECTOR 20 /* configuration change vector (16, RW) */
-#define VIRTIO_MSI_QUEUE_VECTOR 22 /* vector for selected VQ notifications
- (16, RW) */
+/* 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)
-
-#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.
#define VIRTIO_PCI_VRING_ALIGN 4096
-#define virtio_log_debug(vim, vif, f, ...) \
-{ \
- vlib_log(VLIB_LOG_LEVEL_DEBUG, vim->log_default, "%U: " f, \
- format_vlib_pci_addr, &vif->pci_addr, \
- ##__VA_ARGS__); \
-};
-
-#define virtio_log_warning(vim, vif, f, ...) \
-{ \
- vlib_log(VLIB_LOG_LEVEL_WARNING, vim->log_default, "%U: " f, \
- format_vlib_pci_addr, &vif->pci_addr, \
- ##__VA_ARGS__); \
-};
-
-#define virtio_log_error(vim, vif, f, ...) \
-{ \
- vlib_log(VLIB_LOG_LEVEL_ERR, vim->log_default, "%U: " f, \
- format_vlib_pci_addr, &vif->pci_addr, \
- ##__VA_ARGS__); \
-};
-
typedef enum
{
VIRTIO_MSIX_NONE = 0,
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;
/* About the whole device. */
u32 device_feature_select; /* read-write */
u32 device_feature; /* read-only */
- u32 guest_feature_select; /* read-write */
- u32 guest_feature; /* read-write */
+ u32 driver_feature_select; /* read-write */
+ u32 driver_feature; /* read-write */
u16 msix_config; /* read-write */
u16 num_queues; /* read-only */
u8 device_status; /* read-write */
u16 queue_msix_vector; /* read-write */
u16 queue_enable; /* read-write */
u16 queue_notify_off; /* read-only */
- u32 queue_desc_lo; /* read-write */
- u32 queue_desc_hi; /* read-write */
- u32 queue_avail_lo; /* read-write */
- u32 queue_avail_hi; /* read-write */
- u32 queue_used_lo; /* read-write */
- u32 queue_used_hi; /* read-write */
+ u64 queue_desc; /* read-write */
+ u64 queue_driver; /* read-write */
+ u64 queue_device; /* read-write */
} virtio_pci_common_cfg_t;
typedef struct
{
- u64 addr;
- u32 len;
- u16 flags;
- u16 next;
-} vring_desc_t;
+ u8 mac[6];
+ u16 status;
+ u16 max_virtqueue_pairs;
+ u16 mtu;
+} virtio_net_config_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 u8 virtio_net_ctrl_ack_t;
typedef struct
{
- u32 id;
- u32 len;
-} vring_used_elem_t;
+ virtio_net_ctrl_hdr_t ctrl;
+ virtio_net_ctrl_ack_t status;
+ u8 data[1024];
+} virtio_ctrl_msg_t;
-typedef struct
+typedef struct _virtio_pci_func
{
- u16 flags;
- u16 idx;
- vring_used_elem_t ring[0];
- /* u16 avail_event; */
-} vring_used_t;
+ void (*read_config) (vlib_main_t * vm, virtio_if_t * vif, void *dst,
+ int len, u32 addr);
+ void (*write_config) (vlib_main_t * vm, virtio_if_t * vif, void *src,
+ int len, u32 addr);
+
+ u64 (*get_device_features) (vlib_main_t * vm, virtio_if_t * vif);
+ u64 (*get_driver_features) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_driver_features) (vlib_main_t * vm, virtio_if_t * vif,
+ u64 features);
+
+ u8 (*get_status) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_status) (vlib_main_t * vm, virtio_if_t * vif, u8 status);
+ u8 (*device_reset) (vlib_main_t * vm, virtio_if_t * vif);
+
+ u8 (*get_isr) (vlib_main_t * vm, virtio_if_t * vif);
+
+ u16 (*get_queue_size) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+ void (*set_queue_size) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id,
+ u16 queue_size);
+ u8 (*setup_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id,
+ void *p);
+ void (*del_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+ void (*notify_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+
+ u16 (*set_config_irq) (vlib_main_t * vm, virtio_if_t * vif, u16 vec);
+ u16 (*set_queue_irq) (vlib_main_t * vm, virtio_if_t * vif, u16 vec,
+ u16 queue_id);
+
+ void (*get_mac) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_mac) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_device_status) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_max_queue_pairs) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_mtu) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*device_debug_config_space) (vlib_main_t * vm, virtio_if_t * vif);
+} virtio_pci_func_t;
+
+#define foreach_virtio_flags \
+ _ (GSO, 0) \
+ _ (CSUM_OFFLOAD, 1) \
+ _ (GRO_COALESCE, 2) \
+ _ (PACKED, 3) \
+ _ (IN_ORDER, 4)
+
+typedef enum
+{
+#define _(a, b) VIRTIO_FLAG_##a = (1 << b),
+ foreach_virtio_flags
+#undef _
+} virtio_flag_t;
typedef struct
{
u8 mac_addr[6];
u64 features;
u8 gso_enabled;
+ u8 checksum_offload_enabled;
+ u32 virtio_flags;
clib_error_t *error;
} virtio_pci_create_if_args_t;
-extern void debug_device_config_space (vlib_main_t * vm, virtio_if_t * vif);
+extern const virtio_pci_func_t virtio_pci_legacy_func;
+extern const virtio_pci_func_t virtio_pci_modern_func;
+
extern void device_status (vlib_main_t * vm, virtio_if_t * vif);
void virtio_pci_create_if (vlib_main_t * vm,
virtio_pci_create_if_args_t * args);
int virtio_pci_delete_if (vlib_main_t * vm, virtio_if_t * ad);
-
+int virtio_pci_enable_disable_offloads (vlib_main_t * vm, virtio_if_t * vif,
+ int gso_enabled,
+ int checksum_offload_enabled,
+ int offloads_disabled);
#endif /* __included_virtio_pci_h__ */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff