#include "rte_vhost.h"
#include "rte_vdpa.h"
+#include "rte_vdpa_dev.h"
+
+#include "rte_vhost_async.h"
/* Used to indicate that the device is running on a data core */
#define VIRTIO_DEV_RUNNING 1
#define VIRTIO_DEV_BUILTIN_VIRTIO_NET 4
/* Used to indicate that the device has its own data path and configured */
#define VIRTIO_DEV_VDPA_CONFIGURED 8
+/* Used to indicate that the feature negotiation failed */
+#define VIRTIO_DEV_FEATURES_FAILED 16
/* Backend value set by guest. */
#define VIRTIO_DEV_STOPPED -1
#define VHOST_LOG_CACHE_NR 32
+#define MAX_PKT_BURST 32
+
+#define VHOST_MAX_ASYNC_IT (MAX_PKT_BURST * 2)
+#define VHOST_MAX_ASYNC_VEC (BUF_VECTOR_MAX * 4)
+
#define PACKED_DESC_ENQUEUE_USED_FLAG(w) \
((w) ? (VRING_DESC_F_AVAIL | VRING_DESC_F_USED | VRING_DESC_F_WRITE) : \
VRING_DESC_F_WRITE)
uint32_t desc_idx;
};
-/*
- * A structure to hold some fields needed in zero copy code path,
- * mainly for associating an mbuf with the right desc_idx.
- */
-struct zcopy_mbuf {
- struct rte_mbuf *mbuf;
- uint32_t desc_idx;
- uint16_t desc_count;
- uint16_t in_use;
-
- TAILQ_ENTRY(zcopy_mbuf) next;
-};
-TAILQ_HEAD(zcopy_mbuf_list, zcopy_mbuf);
-
/*
* Structure contains the info for each batched memory copy.
*/
int backend;
int enabled;
int access_ok;
+ int ready;
+ int notif_enable;
+#define VIRTIO_UNINITIALIZED_NOTIF (-1)
+
rte_spinlock_t access_lock;
/* Used to notify the guest (trigger interrupt) */
struct rte_vhost_resubmit_info *resubmit_inflight;
uint64_t global_counter;
- uint16_t nr_zmbuf;
- uint16_t zmbuf_size;
- uint16_t last_zmbuf_idx;
- struct zcopy_mbuf *zmbufs;
- struct zcopy_mbuf_list zmbuf_list;
-
union {
struct vring_used_elem *shadow_used_split;
struct vring_used_elem_packed *shadow_used_packed;
TAILQ_HEAD(, vhost_iotlb_entry) iotlb_list;
int iotlb_cache_nr;
TAILQ_HEAD(, vhost_iotlb_entry) iotlb_pending_list;
-} __rte_cache_aligned;
-/* Old kernels have no such macros defined */
-#ifndef VIRTIO_NET_F_GUEST_ANNOUNCE
- #define VIRTIO_NET_F_GUEST_ANNOUNCE 21
-#endif
+ /* operation callbacks for async dma */
+ struct rte_vhost_async_channel_ops async_ops;
-#ifndef VIRTIO_NET_F_MQ
- #define VIRTIO_NET_F_MQ 22
-#endif
+ struct rte_vhost_iov_iter *it_pool;
+ struct iovec *vec_pool;
-#define VHOST_MAX_VRING 0x100
-#define VHOST_MAX_QUEUE_PAIRS 0x80
+ /* async data transfer status */
+ uintptr_t **async_pkts_pending;
+ struct async_inflight_info *async_pkts_info;
+ uint16_t async_pkts_idx;
+ uint16_t async_pkts_inflight_n;
+ uint16_t async_last_pkts_n;
-#ifndef VIRTIO_NET_F_MTU
- #define VIRTIO_NET_F_MTU 3
-#endif
+ /* vq async features */
+ bool async_inorder;
+ bool async_registered;
+ uint16_t async_threshold;
+} __rte_cache_aligned;
-#ifndef VIRTIO_F_ANY_LAYOUT
- #define VIRTIO_F_ANY_LAYOUT 27
-#endif
+/* Virtio device status as per Virtio specification */
+#define VIRTIO_DEVICE_STATUS_RESET 0x00
+#define VIRTIO_DEVICE_STATUS_ACK 0x01
+#define VIRTIO_DEVICE_STATUS_DRIVER 0x02
+#define VIRTIO_DEVICE_STATUS_DRIVER_OK 0x04
+#define VIRTIO_DEVICE_STATUS_FEATURES_OK 0x08
+#define VIRTIO_DEVICE_STATUS_DEV_NEED_RESET 0x40
+#define VIRTIO_DEVICE_STATUS_FAILED 0x80
+
+#define VHOST_MAX_VRING 0x100
+#define VHOST_MAX_QUEUE_PAIRS 0x80
/* Declare IOMMU related bits for older kernels */
#ifndef VIRTIO_F_IOMMU_PLATFORM
uint32_t flags;
uint16_t vhost_hlen;
/* to tell if we need broadcast rarp packet */
- rte_atomic16_t broadcast_rarp;
+ int16_t broadcast_rarp;
uint32_t nr_vring;
- int dequeue_zero_copy;
+ int async_copy;
int extbuf;
int linearbuf;
struct vhost_virtqueue *virtqueue[VHOST_MAX_QUEUE_PAIRS * 2];
uint64_t log_addr;
struct rte_ether_addr mac;
uint16_t mtu;
+ uint8_t status;
struct vhost_device_ops const *notify_ops;
int postcopy_ufd;
int postcopy_listening;
- /*
- * Device id to identify a specific backend device.
- * It's set to -1 for the default software implementation.
- */
- int vdpa_dev_id;
+ struct rte_vdpa_device *vdpa_dev;
/* context data for the external message handlers */
void *extern_data;
vhost_log_cache_used_vring(struct virtio_net *dev, struct vhost_virtqueue *vq,
uint64_t offset, uint64_t len)
{
- vhost_log_cache_write(dev, vq, vq->log_guest_addr + offset, len);
+ if (unlikely(dev->features & (1ULL << VHOST_F_LOG_ALL))) {
+ if (unlikely(vq->log_guest_addr == 0))
+ return;
+ __vhost_log_cache_write(dev, vq, vq->log_guest_addr + offset,
+ len);
+ }
}
static __rte_always_inline void
vhost_log_used_vring(struct virtio_net *dev, struct vhost_virtqueue *vq,
uint64_t offset, uint64_t len)
{
- vhost_log_write(dev, vq->log_guest_addr + offset, len);
+ if (unlikely(dev->features & (1ULL << VHOST_F_LOG_ALL))) {
+ if (unlikely(vq->log_guest_addr == 0))
+ return;
+ __vhost_log_write(dev, vq->log_guest_addr + offset, len);
+ }
}
static __rte_always_inline void
__vhost_log_write(dev, iova, len);
}
-/* Macros for printing using RTE_LOG */
-#define RTE_LOGTYPE_VHOST_CONFIG RTE_LOGTYPE_USER1
-#define RTE_LOGTYPE_VHOST_DATA RTE_LOGTYPE_USER1
+extern int vhost_config_log_level;
+extern int vhost_data_log_level;
+
+#define VHOST_LOG_CONFIG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, vhost_config_log_level, \
+ "VHOST_CONFIG: " fmt, ##args)
+
+#define VHOST_LOG_DATA(level, fmt, args...) \
+ (void)((RTE_LOG_ ## level <= RTE_LOG_DP_LEVEL) ? \
+ rte_log(RTE_LOG_ ## level, vhost_data_log_level, \
+ "VHOST_DATA : " fmt, ##args) : \
+ 0)
#ifdef RTE_LIBRTE_VHOST_DEBUG
#define VHOST_MAX_PRINT_BUFF 6072
-#define VHOST_LOG_DEBUG(log_type, fmt, args...) \
- RTE_LOG(DEBUG, log_type, fmt, ##args)
#define PRINT_PACKET(device, addr, size, header) do { \
char *pkt_addr = (char *)(addr); \
unsigned int index; \
} \
snprintf(packet + strnlen(packet, VHOST_MAX_PRINT_BUFF), VHOST_MAX_PRINT_BUFF - strnlen(packet, VHOST_MAX_PRINT_BUFF), "\n"); \
\
- VHOST_LOG_DEBUG(VHOST_DATA, "%s", packet); \
+ VHOST_LOG_DATA(DEBUG, "%s", packet); \
} while (0)
#else
-#define VHOST_LOG_DEBUG(log_type, fmt, args...) do {} while (0)
#define PRINT_PACKET(device, addr, size, header) do {} while (0)
#endif
-extern uint64_t VHOST_FEATURES;
#define MAX_VHOST_DEVICE 1024
extern struct virtio_net *vhost_devices[MAX_VHOST_DEVICE];
-/* Convert guest physical address to host physical address */
+#define VHOST_BINARY_SEARCH_THRESH 256
+
+static __rte_always_inline int guest_page_addrcmp(const void *p1,
+ const void *p2)
+{
+ const struct guest_page *page1 = (const struct guest_page *)p1;
+ const struct guest_page *page2 = (const struct guest_page *)p2;
+
+ if (page1->guest_phys_addr > page2->guest_phys_addr)
+ return 1;
+ if (page1->guest_phys_addr < page2->guest_phys_addr)
+ return -1;
+
+ return 0;
+}
+
static __rte_always_inline rte_iova_t
-gpa_to_hpa(struct virtio_net *dev, uint64_t gpa, uint64_t size)
+gpa_to_first_hpa(struct virtio_net *dev, uint64_t gpa,
+ uint64_t gpa_size, uint64_t *hpa_size)
{
uint32_t i;
struct guest_page *page;
-
- for (i = 0; i < dev->nr_guest_pages; i++) {
- page = &dev->guest_pages[i];
-
- if (gpa >= page->guest_phys_addr &&
- gpa + size < page->guest_phys_addr + page->size) {
- return gpa - page->guest_phys_addr +
- page->host_phys_addr;
+ struct guest_page key;
+
+ *hpa_size = gpa_size;
+ if (dev->nr_guest_pages >= VHOST_BINARY_SEARCH_THRESH) {
+ key.guest_phys_addr = gpa & ~(dev->guest_pages[0].size - 1);
+ page = bsearch(&key, dev->guest_pages, dev->nr_guest_pages,
+ sizeof(struct guest_page), guest_page_addrcmp);
+ if (page) {
+ if (gpa + gpa_size <=
+ page->guest_phys_addr + page->size) {
+ return gpa - page->guest_phys_addr +
+ page->host_phys_addr;
+ } else if (gpa < page->guest_phys_addr +
+ page->size) {
+ *hpa_size = page->guest_phys_addr +
+ page->size - gpa;
+ return gpa - page->guest_phys_addr +
+ page->host_phys_addr;
+ }
+ }
+ } else {
+ for (i = 0; i < dev->nr_guest_pages; i++) {
+ page = &dev->guest_pages[i];
+
+ if (gpa >= page->guest_phys_addr) {
+ if (gpa + gpa_size <=
+ page->guest_phys_addr + page->size) {
+ return gpa - page->guest_phys_addr +
+ page->host_phys_addr;
+ } else if (gpa < page->guest_phys_addr +
+ page->size) {
+ *hpa_size = page->guest_phys_addr +
+ page->size - gpa;
+ return gpa - page->guest_phys_addr +
+ page->host_phys_addr;
+ }
+ }
}
}
+ *hpa_size = 0;
return 0;
}
+/* Convert guest physical address to host physical address */
+static __rte_always_inline rte_iova_t
+gpa_to_hpa(struct virtio_net *dev, uint64_t gpa, uint64_t size)
+{
+ rte_iova_t hpa;
+ uint64_t hpa_size;
+
+ hpa = gpa_to_first_hpa(dev, gpa, size, &hpa_size);
+ return hpa_size == size ? hpa : 0;
+}
+
static __rte_always_inline uint64_t
hva_to_gpa(struct virtio_net *dev, uint64_t vva, uint64_t len)
{
struct virtio_net *dev = vhost_devices[vid];
if (unlikely(!dev)) {
- RTE_LOG(ERR, VHOST_CONFIG,
+ VHOST_LOG_CONFIG(ERR,
"(%d) device not found.\n", vid);
}
int alloc_vring_queue(struct virtio_net *dev, uint32_t vring_idx);
-void vhost_attach_vdpa_device(int vid, int did);
+void vhost_attach_vdpa_device(int vid, struct rte_vdpa_device *dev);
void vhost_set_ifname(int, const char *if_name, unsigned int if_len);
-void vhost_enable_dequeue_zero_copy(int vid);
void vhost_set_builtin_virtio_net(int vid, bool enable);
void vhost_enable_extbuf(int vid);
void vhost_enable_linearbuf(int vid);
+int vhost_enable_guest_notification(struct virtio_net *dev,
+ struct vhost_virtqueue *vq, int enable);
struct vhost_device_ops const *vhost_driver_callback_get(const char *path);
struct vhost_virtqueue *vq,
uint64_t desc_addr, uint64_t desc_len);
int vring_translate(struct virtio_net *dev, struct vhost_virtqueue *vq);
+uint64_t translate_log_addr(struct virtio_net *dev, struct vhost_virtqueue *vq,
+ uint64_t log_addr);
void vring_invalidate(struct virtio_net *dev, struct vhost_virtqueue *vq);
static __rte_always_inline uint64_t
vhost_vring_call_split(struct virtio_net *dev, struct vhost_virtqueue *vq)
{
/* Flush used->idx update before we read avail->flags. */
- rte_smp_mb();
+ rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
/* Don't kick guest if we don't reach index specified by guest. */
if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX)) {
uint16_t old = vq->signalled_used;
- uint16_t new = vq->last_used_idx;
+ uint16_t new = vq->async_pkts_inflight_n ?
+ vq->used->idx:vq->last_used_idx;
bool signalled_used_valid = vq->signalled_used_valid;
vq->signalled_used = new;
vq->signalled_used_valid = true;
- VHOST_LOG_DEBUG(VHOST_DATA, "%s: used_event_idx=%d, old=%d, new=%d\n",
+ VHOST_LOG_DATA(DEBUG, "%s: used_event_idx=%d, old=%d, new=%d\n",
__func__,
vhost_used_event(vq),
old, new);
bool signalled_used_valid, kick = false;
/* Flush used desc update. */
- rte_smp_mb();
+ rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
if (!(dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))) {
if (vq->driver_event->flags !=
goto kick;
}
- rte_smp_rmb();
+ rte_atomic_thread_fence(__ATOMIC_ACQUIRE);
off_wrap = vq->driver_event->off_wrap;
off = off_wrap & ~(1 << 15);
return true;
}
-static __rte_always_inline void
-put_zmbuf(struct zcopy_mbuf *zmbuf)
-{
- zmbuf->in_use = 0;
-}
-
#endif /* _VHOST_NET_CDEV_H_ */
git.droids-corp.org / dpdk.git / blobdiff