*/
#ifndef __VIRTIO_VHOST_USER_H__
#define __VIRTIO_VHOST_USER_H__
+
+#include <vnet/devices/virtio/virtio_std.h>
+#include <vnet/devices/virtio/vhost_std.h>
+
/* vhost-user data structures */
#define VHOST_MEMORY_MAX_NREGIONS 8
#define VHOST_USER_MSG_HDR_SZ 12
-#define VHOST_VRING_MAX_SIZE 32768
-#define VHOST_VRING_MAX_N 16 //8TX + 8RX
+#define VHOST_VRING_INIT_MQ_PAIR_SZ 8 //8TX + 8RX
+
+/*
+ * qid is one byte in size in the spec. Please see VHOST_USER_SET_VRING_CALL,
+ * VHOST_USER_SET_VRING_KICK, and VHOST_USER_SET_VRING_ERR.
+ * The max number for q pair is naturally 128.
+ */
+#define VHOST_VRING_MAX_MQ_PAIR_SZ 128
#define VHOST_VRING_IDX_RX(qid) (2*qid)
#define VHOST_VRING_IDX_TX(qid) (2*qid + 1)
#define VHOST_USER_VRING_NOFD_MASK 0x100
-#define VIRTQ_DESC_F_NEXT 1
-#define VIRTQ_DESC_F_WRITE 2
-#define VIRTQ_DESC_F_INDIRECT 4
-
-#define VIRTQ_DESC_F_AVAIL (1 << 7)
-#define VIRTQ_DESC_F_USED (1 << 15)
-
-#define VRING_EVENT_F_ENABLE 0x0
-#define VRING_EVENT_F_DISABLE 0x1
-#define VRING_EVENT_F_DESC 0x2
#define VHOST_USER_PROTOCOL_F_MQ 0
#define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1
#define VHOST_VRING_F_LOG 0
-#define VHOST_USER_F_PROTOCOL_FEATURES 30
#define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
(1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD))
-/* 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
-
-#define VRING_USED_F_NO_NOTIFY 1
-#define VRING_AVAIL_F_NO_INTERRUPT 1
-
#define vu_log_debug(dev, f, ...) \
{ \
vlib_log(VLIB_LOG_LEVEL_DEBUG, vhost_user_main.log_default, "%U: " f, \
#undef _
} virtio_trace_flag_t;
-#define foreach_virtio_net_feature \
- _ (VIRTIO_NET_F_CSUM, 0) \
- _ (VIRTIO_NET_F_GUEST_CSUM, 1) \
- _ (VIRTIO_NET_F_GUEST_TSO4, 7) \
- _ (VIRTIO_NET_F_GUEST_TSO6, 8) \
- _ (VIRTIO_NET_F_GUEST_UFO, 10) \
- _ (VIRTIO_NET_F_HOST_TSO4, 11) \
- _ (VIRTIO_NET_F_HOST_TSO6, 12) \
- _ (VIRTIO_NET_F_HOST_UFO, 14) \
- _ (VIRTIO_NET_F_MRG_RXBUF, 15) \
- _ (VIRTIO_NET_F_CTRL_VQ, 17) \
- _ (VIRTIO_NET_F_GUEST_ANNOUNCE, 21) \
- _ (VIRTIO_NET_F_MQ, 22) \
- _ (VHOST_F_LOG_ALL, 26) \
- _ (VIRTIO_F_ANY_LAYOUT, 27) \
- _ (VIRTIO_F_INDIRECT_DESC, 28) \
- _ (VIRTIO_F_EVENT_IDX, 29) \
- _ (VHOST_USER_F_PROTOCOL_FEATURES, 30) \
- _ (VIRTIO_F_VERSION_1, 32) \
- _ (VIRTIO_F_RING_PACKED, 34) \
- _ (VIRTIO_F_IN_ORDER, 35)
-
-typedef enum
-{
-#define _(f,n) FEAT_##f = (n),
- foreach_virtio_net_feature
-#undef _
-} virtio_net_feature_t;
-
#define FEATURE_VIRTIO_NET_F_HOST_TSO_FEATURE_BITS \
- ((1ULL << FEAT_VIRTIO_NET_F_CSUM) | \
- (1ULL << FEAT_VIRTIO_NET_F_HOST_UFO) | \
- (1ULL << FEAT_VIRTIO_NET_F_HOST_TSO4) | \
- (1ULL << FEAT_VIRTIO_NET_F_HOST_TSO6))
+ (VIRTIO_FEATURE (VIRTIO_NET_F_CSUM) | \
+ VIRTIO_FEATURE (VIRTIO_NET_F_HOST_UFO) | \
+ VIRTIO_FEATURE (VIRTIO_NET_F_HOST_TSO4) | \
+ VIRTIO_FEATURE (VIRTIO_NET_F_HOST_TSO6))
#define FEATURE_VIRTIO_NET_F_GUEST_TSO_FEATURE_BITS \
- ((1ULL << FEAT_VIRTIO_NET_F_GUEST_CSUM) | \
- (1ULL << FEAT_VIRTIO_NET_F_GUEST_UFO) | \
- (1ULL << FEAT_VIRTIO_NET_F_GUEST_TSO4) | \
- (1ULL << FEAT_VIRTIO_NET_F_GUEST_TSO6))
+ (VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_CSUM) | \
+ VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_UFO) | \
+ VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_TSO4) | \
+ VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_TSO6))
#define FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS \
(FEATURE_VIRTIO_NET_F_HOST_TSO_FEATURE_BITS | \
FEATURE_VIRTIO_NET_F_GUEST_TSO_FEATURE_BITS)
+
+typedef struct
+{
+ char *sock_filename;
+ u64 feature_mask;
+ u32 custom_dev_instance;
+ u8 hwaddr[6];
+ u8 renumber;
+ u8 is_server;
+ u8 enable_gso;
+ u8 enable_packed;
+ u8 enable_event_idx;
+ u8 use_custom_mac;
+
+ /* return */
+ u32 sw_if_index;
+} vhost_user_create_if_args_t;
+
int vhost_user_create_if (vnet_main_t * vnm, vlib_main_t * vm,
- const char *sock_filename, u8 is_server,
- u32 * sw_if_index, u64 feature_mask,
- u8 renumber, u32 custom_dev_instance, u8 * hwaddr,
- u8 enable_gso, u8 enable_packed);
+ vhost_user_create_if_args_t * args);
int vhost_user_modify_if (vnet_main_t * vnm, vlib_main_t * vm,
- const char *sock_filename, u8 is_server,
- u32 sw_if_index, u64 feature_mask,
- u8 renumber, u32 custom_dev_instance,
- u8 enable_gso, u8 enable_packed);
+ vhost_user_create_if_args_t * args);
int vhost_user_delete_if (vnet_main_t * vnm, vlib_main_t * vm,
u32 sw_if_index);
vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
} __attribute ((packed)) vhost_user_memory_t;
-typedef struct
-{
- u32 index, num;
-} __attribute ((packed)) vhost_vring_state_t;
-
-typedef struct
-{
- u32 index, flags;
- u64 desc_user_addr, used_user_addr, avail_user_addr, log_guest_addr;
-} __attribute ((packed)) vhost_vring_addr_t;
-
-typedef struct vhost_user_log
-{
- u64 size;
- u64 offset;
-} __attribute ((packed)) vhost_user_log_t;
-
typedef enum vhost_user_req
{
VHOST_USER_NONE = 0,
VHOST_USER_MAX
} vhost_user_req_t;
-// vring_desc I/O buffer descriptor
-typedef struct
-{
- uint64_t addr; // packet data buffer address
- uint32_t len; // packet data buffer size
- uint16_t flags; // (see below)
- uint16_t next; // optional index next descriptor in chain
-} __attribute ((packed)) vring_desc_t;
-
-typedef struct
-{
- uint16_t flags;
- volatile uint16_t idx;
- uint16_t ring[VHOST_VRING_MAX_SIZE];
-} __attribute ((packed)) vring_avail_t;
-
-typedef struct
-{
- uint16_t flags;
- uint16_t idx;
- struct /* vring_used_elem */
- {
- uint32_t id;
- uint32_t len;
- } ring[VHOST_VRING_MAX_SIZE];
-} __attribute ((packed)) vring_used_t;
-
-typedef CLIB_PACKED (struct
-{
- u64 addr; // packet data buffer address
- u32 len; // packet data buffer size
- u16 id; // buffer id
- u16 flags; // flags
-}) vring_packed_desc_t;
-
-STATIC_ASSERT_SIZEOF (vring_packed_desc_t, 16);
-
-typedef CLIB_PACKED (struct
-{
- u16 off_wrap;
- u16 flags;
-}) vring_desc_event_t;
-
-typedef struct
-{
- u8 flags;
- u8 gso_type;
- u16 hdr_len;
- u16 gso_size;
- u16 csum_start;
- u16 csum_offset;
-} __attribute ((packed)) virtio_net_hdr_t;
-
-typedef struct {
- virtio_net_hdr_t hdr;
- u16 num_buffers;
-} __attribute ((packed)) virtio_net_hdr_mrg_rxbuf_t;
-
typedef struct vhost_user_msg {
vhost_user_req_t request;
u32 flags;
u8 started;
u8 enabled;
u8 log_used;
+ clib_spinlock_t vring_lock;
+
//Put non-runtime in a different cache line
CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
int errfd;
u16 used_wrap_counter;
u16 avail_wrap_counter;
+ u16 last_kick;
+ u8 first_kick;
+ u32 queue_index;
+ u32 thread_index;
} vhost_user_vring_t;
#define VHOST_USER_EVENT_START_TIMER 1
u32 region_mmap_fd[VHOST_MEMORY_MAX_NREGIONS];
//Virtual rings
- vhost_user_vring_t vrings[VHOST_VRING_MAX_N];
- volatile u32 *vring_locks[VHOST_VRING_MAX_N];
+ vhost_user_vring_t *vrings;
+
+ /*
+ * vrings is a dynamic array. It may have more elements than it is
+ * currently used. num_qid indicates the current total qid's in the
+ * vrings. For example, vec_len(vrings) = 64, num_qid = 60, so the
+ * current valid/used qid is (0, 59) in the vrings array.
+ */
+ u32 num_qid;
int virtio_net_hdr_sz;
int is_any_layout;
/* Packed ring configured */
u8 enable_packed;
+ u8 enable_event_idx;
} vhost_user_intf_t;
+#define FOR_ALL_VHOST_TXQ(qid, vui) for (qid = 1; qid < vui->num_qid; qid += 2)
+
+#define FOR_ALL_VHOST_RXQ(qid, vui) for (qid = 0; qid < vui->num_qid; qid += 2)
+
+#define FOR_ALL_VHOST_RX_TXQ(qid, vui) for (qid = 0; qid < vui->num_qid; qid++)
+
typedef struct
{
uword dst;
u32 *to_next_list;
vlib_buffer_t **rx_buffers_pdesc;
+ u32 polling_q_count;
} vhost_cpu_t;
typedef struct
int vhost_user_dump_ifs (vnet_main_t * vnm, vlib_main_t * vm,
vhost_user_intf_details_t ** out_vuids);
+void vhost_user_set_operation_mode (vhost_user_intf_t *vui,
+ vhost_user_vring_t *txvq);
extern vlib_node_registration_t vhost_user_send_interrupt_node;
extern vnet_device_class_t vhost_user_device_class;
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