#ifndef _VNET_DEVICES_VIRTIO_VIRTIO_H_
#define _VNET_DEVICES_VIRTIO_VIRTIO_H_
+#include <linux/virtio_config.h>
+#include <linux/virtio_net.h>
+#include <linux/virtio_pci.h>
+#include <linux/virtio_ring.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 */ \
_ (VHOST_USER_F_PROTOCOL_FEATURES, 30) \
_ (VIRTIO_F_VERSION_1, 32)
+
#define foreach_virtio_if_flag \
_(0, ADMIN_UP, "admin-up") \
_(1, DELETING, "deleting")
#undef _
} virtio_if_flag_t;
+#define VIRTIO_NUM_RX_DESC 256
+#define VIRTIO_NUM_TX_DESC 256
+
+#define VIRTIO_FEATURE(X) (1ULL << X)
+
+#define TX_QUEUE(X) ((X*2) + 1)
+#define RX_QUEUE(X) (X*2)
+#define TX_QUEUE_ACCESS(X) (X/2)
+#define RX_QUEUE_ACCESS(X) (X/2)
+
typedef enum
{
VIRTIO_IF_TYPE_TAP,
+ VIRTIO_IF_TYPE_PCI,
VIRTIO_IF_N_TYPES,
} virtio_if_type_t;
typedef struct
{
+ u8 mac[6];
+ u16 status;
+ u16 max_virtqueue_pairs;
+ u16 mtu;
+} virtio_net_config_t;
+
+#define VIRTIO_RING_FLAG_MASK_INT 1
+
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
struct vring_desc *desc;
struct vring_used *used;
struct vring_avail *avail;
+ clib_spinlock_t lockp;
u16 desc_in_use;
u16 desc_next;
int kick_fd;
int call_fd;
+ u8 buffer_pool_index;
u16 size;
-#define VIRTIO_RING_FLAG_MASK_INT 1
- u32 flags;
+ u16 queue_id;
+ u16 flags;
u32 call_file_index;
u32 *buffers;
u16 last_used_idx;
+ u16 last_kick_avail_idx;
} virtio_vring_t;
+typedef union
+{
+ struct
+ {
+ u16 domain;
+ u8 bus;
+ u8 slot:5;
+ u8 function:3;
+ };
+ u32 as_u32;
+} pci_addr_t;
+
typedef struct
{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
u32 flags;
- u32 id;
+ clib_spinlock_t lockp;
+
u32 dev_instance;
u32 hw_if_index;
u32 sw_if_index;
+ u32 numa_node;
+ u16 virtio_net_hdr_sz;
+ virtio_if_type_t type;
+ union
+ {
+ u32 id;
+ pci_addr_t pci_addr;
+ };
u32 per_interface_next_index;
- int fd;
- int tap_fd;
- virtio_vring_t *vrings;
-
+ union
+ {
+ int fd;
+ u32 msix_enabled;
+ };
+ union
+ {
+ int tap_fd;
+ u32 pci_dev_handle;
+ };
+ virtio_vring_t *rxq_vrings;
+ virtio_vring_t *txq_vrings;
u64 features, remote_features;
- virtio_if_type_t type;
- u16 tx_ring_sz;
- u16 rx_ring_sz;
+ /* error */
+ clib_error_t *error;
+ u8 support_int_mode; /* support interrupt mode */
+ u16 max_queue_pairs;
+ u16 num_rxqs;
+ u16 num_txqs;
+ u8 status;
+ u8 mac_addr[6];
u8 *host_if_name;
u8 *net_ns;
u8 *host_bridge;
u8 host_ip4_prefix_len;
ip6_address_t host_ip6_addr;
u8 host_ip6_prefix_len;
-
+ int gso_enabled;
int ifindex;
+ virtio_vring_t *cxq_vring;
} virtio_if_t;
typedef struct
{
+ /* logging */
+ vlib_log_class_t log_default;
+
virtio_if_t *interfaces;
} virtio_main_t;
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);
+clib_error_t *virtio_vring_free_rx (vlib_main_t * vm, virtio_if_t * vif,
+ u32 idx);
+clib_error_t *virtio_vring_free_tx (vlib_main_t * vm, virtio_if_t * vif,
+ u32 idx);
+void virtio_vring_set_numa_node (vlib_main_t * vm, virtio_if_t * vif,
+ u32 idx);
+extern void virtio_free_used_desc (vlib_main_t * vm, virtio_vring_t * vring);
+extern void virtio_free_rx_buffers (vlib_main_t * vm, virtio_vring_t * vring);
+extern void virtio_set_net_hdr_size (virtio_if_t * vif);
+extern void virtio_show (vlib_main_t * vm, u32 * hw_if_indices, u8 show_descr,
+ u32 type);
+extern void virtio_pci_legacy_notify_queue (vlib_main_t * vm,
+ virtio_if_t * vif, u16 queue_id);
+format_function_t format_virtio_device_name;
+
+static_always_inline void
+virtio_kick (vlib_main_t * vm, virtio_vring_t * vring, virtio_if_t * vif)
+{
+ if (vif->type == VIRTIO_IF_TYPE_PCI)
+ virtio_pci_legacy_notify_queue (vm, vif, vring->queue_id);
+ else
+ {
+ u64 x = 1;
+ int __clib_unused r;
+
+ r = write (vring->kick_fd, &x, sizeof (x));
+ vring->last_kick_avail_idx = vring->avail->idx;
+ }
+}
#endif /* _VNET_DEVICES_VIRTIO_VIRTIO_H_ */