14 #include <sys/eventfd.h>
24 #include <linux/vhost.h>
25 #include <linux/virtio_ring.h>
26 #include <linux/virtio_net.h>
28 #define RTE_VHOST_USER_CLIENT (1ULL << 0)
29 #define RTE_VHOST_USER_NO_RECONNECT (1ULL << 1)
30 #define RTE_VHOST_USER_DEQUEUE_ZERO_COPY (1ULL << 2)
31 #define RTE_VHOST_USER_IOMMU_SUPPORT (1ULL << 3)
32 #define RTE_VHOST_USER_POSTCOPY_SUPPORT (1ULL << 4)
34 #define RTE_VHOST_USER_EXTBUF_SUPPORT (1ULL << 5)
36 #define RTE_VHOST_USER_LINEARBUF_SUPPORT (1ULL << 6)
39 #ifndef VIRTIO_NET_F_GUEST_ANNOUNCE
40 #define VIRTIO_NET_F_GUEST_ANNOUNCE 21
43 #ifndef VIRTIO_NET_F_MQ
44 #define VIRTIO_NET_F_MQ 22
47 #ifndef VIRTIO_NET_F_MTU
48 #define VIRTIO_NET_F_MTU 3
51 #ifndef VIRTIO_F_ANY_LAYOUT
52 #define VIRTIO_F_ANY_LAYOUT 27
56 #ifndef VHOST_USER_PROTOCOL_F_MQ
57 #define VHOST_USER_PROTOCOL_F_MQ 0
60 #ifndef VHOST_USER_PROTOCOL_F_LOG_SHMFD
61 #define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1
64 #ifndef VHOST_USER_PROTOCOL_F_RARP
65 #define VHOST_USER_PROTOCOL_F_RARP 2
68 #ifndef VHOST_USER_PROTOCOL_F_REPLY_ACK
69 #define VHOST_USER_PROTOCOL_F_REPLY_ACK 3
72 #ifndef VHOST_USER_PROTOCOL_F_NET_MTU
73 #define VHOST_USER_PROTOCOL_F_NET_MTU 4
76 #ifndef VHOST_USER_PROTOCOL_F_SLAVE_REQ
77 #define VHOST_USER_PROTOCOL_F_SLAVE_REQ 5
80 #ifndef VHOST_USER_PROTOCOL_F_CRYPTO_SESSION
81 #define VHOST_USER_PROTOCOL_F_CRYPTO_SESSION 7
84 #ifndef VHOST_USER_PROTOCOL_F_PAGEFAULT
85 #define VHOST_USER_PROTOCOL_F_PAGEFAULT 8
88 #ifndef VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD
89 #define VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD 10
92 #ifndef VHOST_USER_PROTOCOL_F_HOST_NOTIFIER
93 #define VHOST_USER_PROTOCOL_F_HOST_NOTIFIER 11
96 #ifndef VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD
97 #define VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD 12
101 #ifndef VHOST_USER_F_PROTOCOL_FEATURES
102 #define VHOST_USER_F_PROTOCOL_FEATURES 30
112 uint64_t guest_phys_addr;
113 uint64_t guest_user_addr;
114 uint64_t host_user_addr;
129 struct rte_vhost_inflight_desc_split {
136 struct rte_vhost_inflight_info_split {
140 uint16_t last_inflight_io;
142 struct rte_vhost_inflight_desc_split desc[0];
145 struct rte_vhost_inflight_desc_packed {
158 struct rte_vhost_inflight_info_packed {
163 uint16_t old_free_head;
165 uint16_t old_used_idx;
166 uint8_t used_wrap_counter;
167 uint8_t old_used_wrap_counter;
169 struct rte_vhost_inflight_desc_packed desc[0];
172 struct rte_vhost_resubmit_desc {
177 struct rte_vhost_resubmit_info {
178 struct rte_vhost_resubmit_desc *resubmit_list;
179 uint16_t resubmit_num;
182 struct rte_vhost_ring_inflight {
184 struct rte_vhost_inflight_info_split *inflight_split;
185 struct rte_vhost_inflight_info_packed *inflight_packed;
188 struct rte_vhost_resubmit_info *resubmit_inflight;
191 struct rte_vhost_vring {
193 struct vring_desc *desc;
194 struct vring_packed_desc *desc_packed;
197 struct vring_avail *avail;
198 struct vring_packed_desc_event *driver_event;
201 struct vring_used *used;
202 struct vring_packed_desc_event *device_event;
204 uint64_t log_guest_addr;
218 RTE_VHOST_MSG_RESULT_ERR = -1,
220 RTE_VHOST_MSG_RESULT_OK = 0,
222 RTE_VHOST_MSG_RESULT_REPLY = 1,
224 RTE_VHOST_MSG_RESULT_NOT_HANDLED,
270 int (*new_connection)(
int vid);
271 void (*destroy_connection)(
int vid);
306 for (i = 0; i < mem->nregions; i++) {
307 reg = &mem->regions[i];
308 if (gpa >= reg->guest_phys_addr &&
309 gpa < reg->guest_phys_addr + reg->size) {
310 return gpa - reg->guest_phys_addr +
337 uint64_t gpa, uint64_t *len)
342 for (i = 0; i < mem->nregions; i++) {
343 r = &mem->regions[i];
344 if (gpa >= r->guest_phys_addr &&
345 gpa < r->guest_phys_addr + r->size) {
347 if (
unlikely(*len > r->guest_phys_addr + r->size - gpa))
348 *len = r->guest_phys_addr + r->size - gpa;
350 return gpa - r->guest_phys_addr +
359 #define RTE_VHOST_NEED_LOG(features) ((features) & (1ULL << VHOST_F_LOG_ALL))
400 uint64_t offset, uint64_t len);
402 int rte_vhost_enable_guest_notification(
int vid, uint16_t queue_id,
int enable);
411 int rte_vhost_driver_unregister(
const char *path);
520 uint64_t protocol_features);
535 uint64_t *protocol_features);
564 int rte_vhost_driver_callback_register(
const char *path,
683 struct rte_mbuf **pkts, uint16_t count);
734 struct rte_vhost_vring *vring);
751 struct rte_vhost_ring_inflight *vring);
794 uint16_t head, uint16_t last, uint16_t *inflight_entry);
811 uint16_t vring_idx, uint16_t idx);
831 uint16_t vring_idx, uint16_t head);
850 uint16_t last_used_idx, uint16_t idx);
927 uint16_t *last_avail_idx, uint16_t *last_used_idx);
950 uint16_t queue_id, uint16_t *last_avail_idx, uint16_t *last_used_idx);
969 uint16_t last_avail_idx, uint16_t last_used_idx);
static __rte_deprecated __rte_always_inline uint64_t rte_vhost_gpa_to_vva(struct rte_vhost_memory *mem, uint64_t gpa)
__rte_experimental int rte_vhost_set_last_inflight_io_split(int vid, uint16_t vring_idx, uint16_t idx)
int rte_vhost_driver_start(const char *path)
#define __rte_always_inline
int rte_vhost_driver_register(const char *path, uint64_t flags)
uint16_t rte_vhost_avail_entries(int vid, uint16_t queue_id)
__rte_experimental int rte_vhost_clr_inflight_desc_split(int vid, uint16_t vring_idx, uint16_t last_used_idx, uint16_t idx)
int rte_vhost_driver_disable_features(const char *path, uint64_t features)
void rte_vhost_log_used_vring(int vid, uint16_t vring_idx, uint64_t offset, uint64_t len)
__rte_experimental int rte_vhost_extern_callback_register(int vid, struct rte_vhost_user_extern_ops const *const ops, void *ctx)
int rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx, struct rte_vhost_vring *vring)
__rte_experimental struct rte_vdpa_device * rte_vhost_driver_get_vdpa_device(const char *path)
__rte_experimental int rte_vhost_set_last_inflight_io_packed(int vid, uint16_t vring_idx, uint16_t head)
uint16_t rte_vhost_enqueue_burst(int vid, uint16_t queue_id, struct rte_mbuf **pkts, uint16_t count)
__rte_deprecated uint32_t rte_vhost_get_queue_num(int vid)
__rte_experimental int rte_vhost_get_vring_base(int vid, uint16_t queue_id, uint16_t *last_avail_idx, uint16_t *last_used_idx)
int(* new_device)(int vid)
__rte_experimental int rte_vhost_set_vring_base(int vid, uint16_t queue_id, uint16_t last_avail_idx, uint16_t last_used_idx)
int(* features_changed)(int vid, uint64_t features)
int rte_vhost_get_mtu(int vid, uint16_t *mtu)
__rte_experimental int rte_vhost_driver_set_protocol_features(const char *path, uint64_t protocol_features)
__rte_experimental struct rte_vdpa_device * rte_vhost_get_vdpa_device(int vid)
__rte_experimental int rte_vhost_driver_detach_vdpa_device(const char *path)
uint16_t rte_vhost_get_vring_num(int vid)
int rte_vhost_get_numa_node(int vid)
struct rte_vdpa_dev_ops * ops
static __rte_experimental __rte_always_inline uint64_t rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem, uint64_t gpa, uint64_t *len)
__rte_experimental int rte_vhost_driver_get_queue_num(const char *path, uint32_t *queue_num)
int rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem)
__rte_experimental int rte_vhost_driver_attach_vdpa_device(const char *path, struct rte_vdpa_device *dev)
int rte_vhost_vring_call(int vid, uint16_t vring_idx)
int rte_vhost_get_negotiated_features(int vid, uint64_t *features)
__rte_experimental int rte_vhost_set_inflight_desc_packed(int vid, uint16_t vring_idx, uint16_t head, uint16_t last, uint16_t *inflight_entry)
uint32_t rte_vhost_rx_queue_count(int vid, uint16_t qid)
void(* guest_notified)(int vid)
uint16_t rte_vhost_dequeue_burst(int vid, uint16_t queue_id, struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count)
__rte_experimental int rte_vhost_clr_inflight_desc_packed(int vid, uint16_t vring_idx, uint16_t head)
void(* destroy_device)(int vid)
int(* vring_state_changed)(int vid, uint16_t queue_id, int enable)
__rte_experimental int rte_vhost_driver_get_protocol_features(const char *path, uint64_t *protocol_features)
__rte_experimental int rte_vhost_get_vhost_ring_inflight(int vid, uint16_t vring_idx, struct rte_vhost_ring_inflight *vring)
__rte_experimental int rte_vhost_get_log_base(int vid, uint64_t *log_base, uint64_t *log_size)
int rte_vhost_driver_get_features(const char *path, uint64_t *features)
int rte_vhost_driver_set_features(const char *path, uint64_t features)
int rte_vhost_get_ifname(int vid, char *buf, size_t len)
__rte_experimental int rte_vhost_get_vring_base_from_inflight(int vid, uint16_t queue_id, uint16_t *last_avail_idx, uint16_t *last_used_idx)
enum rte_vhost_msg_result(* rte_vhost_msg_handle)(int vid, void *msg)
__rte_experimental int rte_vhost_set_inflight_desc_split(int vid, uint16_t vring_idx, uint16_t idx)
int rte_vhost_driver_enable_features(const char *path, uint64_t features)
void rte_vhost_log_write(int vid, uint64_t addr, uint64_t len)