#ifndef _VNET_DEVICES_VIRTIO_VIRTIO_H_
#define _VNET_DEVICES_VIRTIO_VIRTIO_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 */ \
- _ (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)
+#include <vnet/devices/virtio/virtio_std.h>
+#include <vnet/devices/virtio/vhost_std.h>
+#include <vnet/devices/virtio/virtio_buffering.h>
+#include <vnet/gso/gro.h>
#define foreach_virtio_if_flag \
_(0, ADMIN_UP, "admin-up") \
#undef _
} virtio_if_flag_t;
+#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)
+
+#define VIRTIO_NUM_RX_DESC 256
+#define VIRTIO_NUM_TX_DESC 256
+
+#define foreach_virtio_if_types \
+ _ (TAP, 0) \
+ _ (TUN, 1) \
+ _ (PCI, 2)
+
typedef enum
{
- VIRTIO_IF_TYPE_TAP,
- VIRTIO_IF_N_TYPES,
+#define _(a, b) VIRTIO_IF_TYPE_##a = (1 << b),
+ foreach_virtio_if_types
+#undef _
+ VIRTIO_IF_N_TYPES = (1 << 3),
} virtio_if_type_t;
+#define VIRTIO_RING_FLAG_MASK_INT 1
+
+#define VIRTIO_EVENT_START_TIMER 1
+#define VIRTIO_EVENT_STOP_TIMER 2
typedef struct
{
- struct vring_desc *desc;
- struct vring_used *used;
- struct vring_avail *avail;
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ clib_spinlock_t lockp;
+ vring_desc_t *desc;
+ vring_used_t *used;
+ vring_avail_t *avail;
u16 desc_in_use;
u16 desc_next;
- int kick_fd;
- int call_fd;
+ union
+ {
+ struct
+ {
+ int kick_fd;
+ int call_fd;
+ };
+ u16 queue_notify_offset;
+ };
+ u8 buffer_pool_index;
u16 size;
-#define VIRTIO_RING_FLAG_MASK_INT 1
- u32 flags;
- u32 call_file_index;
+ u16 queue_id;
+#define VRING_TX_OUT_OF_ORDER 1
+ u16 flags;
u32 *buffers;
u16 last_used_idx;
+ u16 last_kick_avail_idx;
+ u32 call_file_index;
+ vnet_hw_if_rx_mode mode;
+ virtio_vring_buffering_t *buffering;
+ gro_flow_table_t *flow_table;
} virtio_vring_t;
+typedef union
+{
+ struct
+ {
+ u16 domain;
+ u8 bus;
+ u8 slot:5;
+ u8 function:3;
+ };
+ u32 as_u32;
+} pci_addr_t;
+
+/* forward declaration */
+typedef struct _virtio_pci_func virtio_pci_func_t;
+
typedef struct
{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ u64 features;
u32 flags;
- u32 dev_instance;
+ u32 per_interface_next_index;
+ u16 num_rxqs;
+ u16 num_txqs;
+ virtio_vring_t *rxq_vrings;
+ virtio_vring_t *txq_vrings;
+ int gso_enabled;
+ int csum_offload_enabled;
+ union
+ {
+ int *tap_fds;
+ struct
+ {
+ u32 pci_dev_handle;
+ u32 msix_enabled;
+ };
+ };
+ u16 virtio_net_hdr_sz;
+ virtio_if_type_t type;
+
u32 hw_if_index;
u32 sw_if_index;
- u32 per_interface_next_index;
- int fd;
- int tap_fd;
- virtio_vring_t *vrings;
- u64 features, remote_features;
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
+ int packet_coalesce;
+ int packet_buffering;
+ u32 dev_instance;
+ u32 numa_node;
+ u64 remote_features;
- virtio_if_type_t type;
- u8 *name;
- u8 *net_ns;
- int ifindex;
+ /* error */
+ clib_error_t *error;
+ union
+ {
+ struct
+ {
+ u32 mac_addr32;
+ u16 mac_addr16;
+ };
+ u8 mac_addr[6];
+ };
+ union
+ {
+ struct /* tun/tap interface */
+ {
+ ip6_address_t host_ip6_addr;
+ int *vhost_fds;
+ u8 *host_if_name;
+ u8 *net_ns;
+ u8 *host_bridge;
+ u8 host_mac_addr[6];
+ u32 id;
+ u32 host_mtu_size;
+ u32 tap_flags;
+ int ifindex;
+ ip4_address_t host_ip4_addr;
+ u8 host_ip4_prefix_len;
+ u8 host_ip6_prefix_len;
+ u8 host_carrier_up; /* host tun/tap driver link carrier state */
+ };
+ struct /* native virtio */
+ {
+ void *bar;
+ virtio_vring_t *cxq_vring;
+ pci_addr_t pci_addr;
+ u32 bar_id;
+ u32 notify_off_multiplier;
+ u32 is_modern;
+ u16 common_offset;
+ u16 notify_offset;
+ u16 device_offset;
+ u16 isr_offset;
+ u16 max_queue_pairs;
+ u16 msix_table_size;
+ u8 support_int_mode; /* support interrupt mode */
+ u8 status;
+ };
+ };
+ const virtio_pci_func_t *virtio_pci_func;
} virtio_if_t;
typedef struct
{
+ u32 interrupt_queues_count;
+ /* logging */
+ vlib_log_class_t log_default;
+
virtio_if_t *interfaces;
} virtio_main_t;
extern virtio_main_t virtio_main;
extern vnet_device_class_t virtio_device_class;
extern vlib_node_registration_t virtio_input_node;
+extern vlib_node_registration_t virtio_send_interrupt_node;
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_set_packet_coalesce (virtio_if_t * vif);
+clib_error_t *virtio_set_packet_buffering (virtio_if_t * vif, u16 size);
+extern void virtio_pci_legacy_notify_queue (vlib_main_t * vm,
+ virtio_if_t * vif, u16 queue_id,
+ u16 queue_notify_offset);
+extern void virtio_pci_modern_notify_queue (vlib_main_t * vm,
+ virtio_if_t * vif, u16 queue_id,
+ u16 queue_notify_offset);
+format_function_t format_virtio_device_name;
+format_function_t format_virtio_log_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)
+ {
+ if (vif->is_modern)
+ virtio_pci_modern_notify_queue (vm, vif, vring->queue_id,
+ vring->queue_notify_offset);
+ else
+ virtio_pci_legacy_notify_queue (vm, vif, vring->queue_id,
+ vring->queue_notify_offset);
+ }
+ else
+ {
+ u64 x = 1;
+ int __clib_unused r;
+
+ r = write (vring->kick_fd, &x, sizeof (x));
+ vring->last_kick_avail_idx = vring->avail->idx;
+ }
+}
+
+#define virtio_log_debug(vif, f, ...) \
+{ \
+ vlib_log(VLIB_LOG_LEVEL_DEBUG, virtio_main.log_default, \
+ "%U: " f, format_virtio_log_name, vif, \
+ ##__VA_ARGS__); \
+};
+
+#define virtio_log_warning(vif, f, ...) \
+{ \
+ vlib_log(VLIB_LOG_LEVEL_WARNING, virtio_main.log_default, \
+ "%U: " f, format_virtio_log_name, vif, \
+ ##__VA_ARGS__); \
+};
+
+#define virtio_log_error(vif, f, ...) \
+{ \
+ vlib_log(VLIB_LOG_LEVEL_ERR, virtio_main.log_default, \
+ "%U: " f, format_virtio_log_name, vif, \
+ ##__VA_ARGS__); \
+};
#endif /* _VNET_DEVICES_VIRTIO_VIRTIO_H_ */
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