#include <rte_udp.h>
#include <rte_sctp.h>
#include <rte_arp.h>
+#include <rte_spinlock.h>
+#include "iotlb.h"
#include "vhost.h"
#define MAX_PKT_BURST 32
+#define MAX_BATCH_LEN 256
+
static bool
is_valid_virt_queue_idx(uint32_t idx, int is_tx, uint32_t nr_vring)
{
vq->shadow_used_ring[i].len = len;
}
+static inline void
+do_data_copy_enqueue(struct virtio_net *dev, struct vhost_virtqueue *vq)
+{
+ struct batch_copy_elem *elem = vq->batch_copy_elems;
+ uint16_t count = vq->batch_copy_nb_elems;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ rte_memcpy(elem[i].dst, elem[i].src, elem[i].len);
+ vhost_log_write(dev, elem[i].log_addr, elem[i].len);
+ PRINT_PACKET(dev, (uintptr_t)elem[i].dst, elem[i].len, 0);
+ }
+}
+
+static inline void
+do_data_copy_dequeue(struct vhost_virtqueue *vq)
+{
+ struct batch_copy_elem *elem = vq->batch_copy_elems;
+ uint16_t count = vq->batch_copy_nb_elems;
+ int i;
+
+ for (i = 0; i < count; i++)
+ rte_memcpy(elem[i].dst, elem[i].src, elem[i].len);
+}
+
/* avoid write operation when necessary, to lessen cache issues */
#define ASSIGN_UNLESS_EQUAL(var, val) do { \
if ((var) != (val)) \
}
static __rte_always_inline int
-copy_mbuf_to_desc(struct virtio_net *dev, struct vring_desc *descs,
- struct rte_mbuf *m, uint16_t desc_idx, uint32_t size)
+copy_mbuf_to_desc(struct virtio_net *dev, struct vhost_virtqueue *vq,
+ struct vring_desc *descs, struct rte_mbuf *m,
+ uint16_t desc_idx, uint32_t size)
{
uint32_t desc_avail, desc_offset;
uint32_t mbuf_avail, mbuf_offset;
uint64_t desc_addr;
/* A counter to avoid desc dead loop chain */
uint16_t nr_desc = 1;
+ struct batch_copy_elem *batch_copy = vq->batch_copy_elems;
+ uint16_t copy_nb = vq->batch_copy_nb_elems;
+ int error = 0;
desc = &descs[desc_idx];
- desc_addr = rte_vhost_gpa_to_vva(dev->mem, desc->addr);
+ desc_addr = vhost_iova_to_vva(dev, vq, desc->addr,
+ desc->len, VHOST_ACCESS_RW);
/*
* Checking of 'desc_addr' placed outside of 'unlikely' macro to avoid
* performance issue with some versions of gcc (4.8.4 and 5.3.0) which
* otherwise stores offset on the stack instead of in a register.
*/
- if (unlikely(desc->len < dev->vhost_hlen) || !desc_addr)
- return -1;
+ if (unlikely(desc->len < dev->vhost_hlen) || !desc_addr) {
+ error = -1;
+ goto out;
+ }
rte_prefetch0((void *)(uintptr_t)desc_addr);
if (desc_avail == 0) {
if ((desc->flags & VRING_DESC_F_NEXT) == 0) {
/* Room in vring buffer is not enough */
- return -1;
+ error = -1;
+ goto out;
+ }
+ if (unlikely(desc->next >= size || ++nr_desc > size)) {
+ error = -1;
+ goto out;
}
- if (unlikely(desc->next >= size || ++nr_desc > size))
- return -1;
desc = &descs[desc->next];
- desc_addr = rte_vhost_gpa_to_vva(dev->mem, desc->addr);
- if (unlikely(!desc_addr))
- return -1;
+ desc_addr = vhost_iova_to_vva(dev, vq, desc->addr,
+ desc->len,
+ VHOST_ACCESS_RW);
+ if (unlikely(!desc_addr)) {
+ error = -1;
+ goto out;
+ }
desc_offset = 0;
desc_avail = desc->len;
}
cpy_len = RTE_MIN(desc_avail, mbuf_avail);
- rte_memcpy((void *)((uintptr_t)(desc_addr + desc_offset)),
- rte_pktmbuf_mtod_offset(m, void *, mbuf_offset),
- cpy_len);
- vhost_log_write(dev, desc->addr + desc_offset, cpy_len);
- PRINT_PACKET(dev, (uintptr_t)(desc_addr + desc_offset),
- cpy_len, 0);
+ if (likely(cpy_len > MAX_BATCH_LEN || copy_nb >= vq->size)) {
+ rte_memcpy((void *)((uintptr_t)(desc_addr +
+ desc_offset)),
+ rte_pktmbuf_mtod_offset(m, void *, mbuf_offset),
+ cpy_len);
+ vhost_log_write(dev, desc->addr + desc_offset, cpy_len);
+ PRINT_PACKET(dev, (uintptr_t)(desc_addr + desc_offset),
+ cpy_len, 0);
+ } else {
+ batch_copy[copy_nb].dst =
+ (void *)((uintptr_t)(desc_addr + desc_offset));
+ batch_copy[copy_nb].src =
+ rte_pktmbuf_mtod_offset(m, void *, mbuf_offset);
+ batch_copy[copy_nb].log_addr = desc->addr + desc_offset;
+ batch_copy[copy_nb].len = cpy_len;
+ copy_nb++;
+ }
mbuf_avail -= cpy_len;
mbuf_offset += cpy_len;
desc_offset += cpy_len;
}
- return 0;
+out:
+ vq->batch_copy_nb_elems = copy_nb;
+
+ return error;
}
/**
}
vq = dev->virtqueue[queue_id];
+
+ rte_spinlock_lock(&vq->access_lock);
+
if (unlikely(vq->enabled == 0))
- return 0;
+ goto out_access_unlock;
+
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+ vhost_user_iotlb_rd_lock(vq);
+
+ if (unlikely(vq->access_ok == 0)) {
+ if (unlikely(vring_translate(dev, vq) < 0)) {
+ count = 0;
+ goto out;
+ }
+ }
avail_idx = *((volatile uint16_t *)&vq->avail->idx);
start_idx = vq->last_used_idx;
count = RTE_MIN(count, free_entries);
count = RTE_MIN(count, (uint32_t)MAX_PKT_BURST);
if (count == 0)
- return 0;
+ goto out;
LOG_DEBUG(VHOST_DATA, "(%d) start_idx %d | end_idx %d\n",
dev->vid, start_idx, start_idx + count);
+ vq->batch_copy_nb_elems = 0;
+
/* Retrieve all of the desc indexes first to avoid caching issues. */
rte_prefetch0(&vq->avail->ring[start_idx & (vq->size - 1)]);
for (i = 0; i < count; i++) {
if (vq->desc[desc_idx].flags & VRING_DESC_F_INDIRECT) {
descs = (struct vring_desc *)(uintptr_t)
- rte_vhost_gpa_to_vva(dev->mem,
- vq->desc[desc_idx].addr);
+ vhost_iova_to_vva(dev,
+ vq, vq->desc[desc_idx].addr,
+ vq->desc[desc_idx].len,
+ VHOST_ACCESS_RO);
if (unlikely(!descs)) {
count = i;
break;
sz = vq->size;
}
- err = copy_mbuf_to_desc(dev, descs, pkts[i], desc_idx, sz);
+ err = copy_mbuf_to_desc(dev, vq, descs, pkts[i], desc_idx, sz);
if (unlikely(err)) {
- used_idx = (start_idx + i) & (vq->size - 1);
- vq->used->ring[used_idx].len = dev->vhost_hlen;
- vhost_log_used_vring(dev, vq,
- offsetof(struct vring_used, ring[used_idx]),
- sizeof(vq->used->ring[used_idx]));
+ count = i;
+ break;
}
if (i + 1 < count)
rte_prefetch0(&vq->desc[desc_indexes[i+1]]);
}
+ do_data_copy_enqueue(dev, vq);
+
rte_smp_wmb();
*(volatile uint16_t *)&vq->used->idx += count;
if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT)
&& (vq->callfd >= 0))
eventfd_write(vq->callfd, (eventfd_t)1);
+out:
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+ vhost_user_iotlb_rd_unlock(vq);
+
+out_access_unlock:
+ rte_spinlock_unlock(&vq->access_lock);
+
return count;
}
if (vq->desc[idx].flags & VRING_DESC_F_INDIRECT) {
descs = (struct vring_desc *)(uintptr_t)
- rte_vhost_gpa_to_vva(dev->mem, vq->desc[idx].addr);
+ vhost_iova_to_vva(dev, vq, vq->desc[idx].addr,
+ vq->desc[idx].len,
+ VHOST_ACCESS_RO);
if (unlikely(!descs))
return -1;
}
static __rte_always_inline int
-copy_mbuf_to_desc_mergeable(struct virtio_net *dev, struct rte_mbuf *m,
- struct buf_vector *buf_vec, uint16_t num_buffers)
+copy_mbuf_to_desc_mergeable(struct virtio_net *dev, struct vhost_virtqueue *vq,
+ struct rte_mbuf *m, struct buf_vector *buf_vec,
+ uint16_t num_buffers)
{
uint32_t vec_idx = 0;
uint64_t desc_addr;
uint32_t cpy_len;
uint64_t hdr_addr, hdr_phys_addr;
struct rte_mbuf *hdr_mbuf;
+ struct batch_copy_elem *batch_copy = vq->batch_copy_elems;
+ uint16_t copy_nb = vq->batch_copy_nb_elems;
+ int error = 0;
- if (unlikely(m == NULL))
- return -1;
+ if (unlikely(m == NULL)) {
+ error = -1;
+ goto out;
+ }
- desc_addr = rte_vhost_gpa_to_vva(dev->mem, buf_vec[vec_idx].buf_addr);
- if (buf_vec[vec_idx].buf_len < dev->vhost_hlen || !desc_addr)
- return -1;
+ desc_addr = vhost_iova_to_vva(dev, vq, buf_vec[vec_idx].buf_addr,
+ buf_vec[vec_idx].buf_len,
+ VHOST_ACCESS_RW);
+ if (buf_vec[vec_idx].buf_len < dev->vhost_hlen || !desc_addr) {
+ error = -1;
+ goto out;
+ }
hdr_mbuf = m;
hdr_addr = desc_addr;
/* done with current desc buf, get the next one */
if (desc_avail == 0) {
vec_idx++;
- desc_addr = rte_vhost_gpa_to_vva(dev->mem,
- buf_vec[vec_idx].buf_addr);
- if (unlikely(!desc_addr))
- return -1;
+ desc_addr =
+ vhost_iova_to_vva(dev, vq,
+ buf_vec[vec_idx].buf_addr,
+ buf_vec[vec_idx].buf_len,
+ VHOST_ACCESS_RW);
+ if (unlikely(!desc_addr)) {
+ error = -1;
+ goto out;
+ }
/* Prefetch buffer address. */
rte_prefetch0((void *)(uintptr_t)desc_addr);
}
cpy_len = RTE_MIN(desc_avail, mbuf_avail);
- rte_memcpy((void *)((uintptr_t)(desc_addr + desc_offset)),
- rte_pktmbuf_mtod_offset(m, void *, mbuf_offset),
- cpy_len);
- vhost_log_write(dev, buf_vec[vec_idx].buf_addr + desc_offset,
- cpy_len);
- PRINT_PACKET(dev, (uintptr_t)(desc_addr + desc_offset),
- cpy_len, 0);
+
+ if (likely(cpy_len > MAX_BATCH_LEN || copy_nb >= vq->size)) {
+ rte_memcpy((void *)((uintptr_t)(desc_addr +
+ desc_offset)),
+ rte_pktmbuf_mtod_offset(m, void *, mbuf_offset),
+ cpy_len);
+ vhost_log_write(dev,
+ buf_vec[vec_idx].buf_addr + desc_offset,
+ cpy_len);
+ PRINT_PACKET(dev, (uintptr_t)(desc_addr + desc_offset),
+ cpy_len, 0);
+ } else {
+ batch_copy[copy_nb].dst =
+ (void *)((uintptr_t)(desc_addr + desc_offset));
+ batch_copy[copy_nb].src =
+ rte_pktmbuf_mtod_offset(m, void *, mbuf_offset);
+ batch_copy[copy_nb].log_addr =
+ buf_vec[vec_idx].buf_addr + desc_offset;
+ batch_copy[copy_nb].len = cpy_len;
+ copy_nb++;
+ }
mbuf_avail -= cpy_len;
mbuf_offset += cpy_len;
desc_offset += cpy_len;
}
- return 0;
+out:
+ vq->batch_copy_nb_elems = copy_nb;
+
+ return error;
}
static __rte_always_inline uint32_t
}
vq = dev->virtqueue[queue_id];
+
+ rte_spinlock_lock(&vq->access_lock);
+
if (unlikely(vq->enabled == 0))
- return 0;
+ goto out_access_unlock;
+
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+ vhost_user_iotlb_rd_lock(vq);
+
+ if (unlikely(vq->access_ok == 0))
+ if (unlikely(vring_translate(dev, vq) < 0))
+ goto out;
count = RTE_MIN((uint32_t)MAX_PKT_BURST, count);
if (count == 0)
- return 0;
+ goto out;
+
+ vq->batch_copy_nb_elems = 0;
rte_prefetch0(&vq->avail->ring[vq->last_avail_idx & (vq->size - 1)]);
dev->vid, vq->last_avail_idx,
vq->last_avail_idx + num_buffers);
- if (copy_mbuf_to_desc_mergeable(dev, pkts[pkt_idx],
+ if (copy_mbuf_to_desc_mergeable(dev, vq, pkts[pkt_idx],
buf_vec, num_buffers) < 0) {
vq->shadow_used_idx -= num_buffers;
break;
vq->last_avail_idx += num_buffers;
}
+ do_data_copy_enqueue(dev, vq);
+
if (likely(vq->shadow_used_idx)) {
flush_shadow_used_ring(dev, vq);
eventfd_write(vq->callfd, (eventfd_t)1);
}
+out:
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+ vhost_user_iotlb_rd_unlock(vq);
+
+out_access_unlock:
+ rte_spinlock_unlock(&vq->access_lock);
+
return pkt_idx;
}
}
static __rte_always_inline int
-copy_desc_to_mbuf(struct virtio_net *dev, struct vring_desc *descs,
- uint16_t max_desc, struct rte_mbuf *m, uint16_t desc_idx,
+copy_desc_to_mbuf(struct virtio_net *dev, struct vhost_virtqueue *vq,
+ struct vring_desc *descs, uint16_t max_desc,
+ struct rte_mbuf *m, uint16_t desc_idx,
struct rte_mempool *mbuf_pool)
{
struct vring_desc *desc;
struct virtio_net_hdr *hdr = NULL;
/* A counter to avoid desc dead loop chain */
uint32_t nr_desc = 1;
+ struct batch_copy_elem *batch_copy = vq->batch_copy_elems;
+ uint16_t copy_nb = vq->batch_copy_nb_elems;
+ int error = 0;
desc = &descs[desc_idx];
if (unlikely((desc->len < dev->vhost_hlen)) ||
- (desc->flags & VRING_DESC_F_INDIRECT))
- return -1;
+ (desc->flags & VRING_DESC_F_INDIRECT)) {
+ error = -1;
+ goto out;
+ }
- desc_addr = rte_vhost_gpa_to_vva(dev->mem, desc->addr);
- if (unlikely(!desc_addr))
- return -1;
+ desc_addr = vhost_iova_to_vva(dev,
+ vq, desc->addr,
+ desc->len,
+ VHOST_ACCESS_RO);
+ if (unlikely(!desc_addr)) {
+ error = -1;
+ goto out;
+ }
if (virtio_net_with_host_offload(dev)) {
hdr = (struct virtio_net_hdr *)((uintptr_t)desc_addr);
if (likely((desc->len == dev->vhost_hlen) &&
(desc->flags & VRING_DESC_F_NEXT) != 0)) {
desc = &descs[desc->next];
- if (unlikely(desc->flags & VRING_DESC_F_INDIRECT))
- return -1;
+ if (unlikely(desc->flags & VRING_DESC_F_INDIRECT)) {
+ error = -1;
+ goto out;
+ }
- desc_addr = rte_vhost_gpa_to_vva(dev->mem, desc->addr);
- if (unlikely(!desc_addr))
- return -1;
+ desc_addr = vhost_iova_to_vva(dev,
+ vq, desc->addr,
+ desc->len,
+ VHOST_ACCESS_RO);
+ if (unlikely(!desc_addr)) {
+ error = -1;
+ goto out;
+ }
desc_offset = 0;
desc_avail = desc->len;
desc->addr + desc_offset, cpy_len)))) {
cur->data_len = cpy_len;
cur->data_off = 0;
- cur->buf_addr = (void *)(uintptr_t)desc_addr;
- cur->buf_physaddr = hpa;
+ cur->buf_addr = (void *)(uintptr_t)(desc_addr
+ + desc_offset);
+ cur->buf_iova = hpa;
/*
* In zero copy mode, one mbuf can only reference data
*/
mbuf_avail = cpy_len;
} else {
- rte_memcpy(rte_pktmbuf_mtod_offset(cur, void *,
- mbuf_offset),
- (void *)((uintptr_t)(desc_addr + desc_offset)),
- cpy_len);
+ if (likely(cpy_len > MAX_BATCH_LEN ||
+ copy_nb >= vq->size ||
+ (hdr && cur == m))) {
+ rte_memcpy(rte_pktmbuf_mtod_offset(cur, void *,
+ mbuf_offset),
+ (void *)((uintptr_t)(desc_addr +
+ desc_offset)),
+ cpy_len);
+ } else {
+ batch_copy[copy_nb].dst =
+ rte_pktmbuf_mtod_offset(cur, void *,
+ mbuf_offset);
+ batch_copy[copy_nb].src =
+ (void *)((uintptr_t)(desc_addr +
+ desc_offset));
+ batch_copy[copy_nb].len = cpy_len;
+ copy_nb++;
+ }
}
mbuf_avail -= cpy_len;
break;
if (unlikely(desc->next >= max_desc ||
- ++nr_desc > max_desc))
- return -1;
+ ++nr_desc > max_desc)) {
+ error = -1;
+ goto out;
+ }
desc = &descs[desc->next];
- if (unlikely(desc->flags & VRING_DESC_F_INDIRECT))
- return -1;
+ if (unlikely(desc->flags & VRING_DESC_F_INDIRECT)) {
+ error = -1;
+ goto out;
+ }
- desc_addr = rte_vhost_gpa_to_vva(dev->mem, desc->addr);
- if (unlikely(!desc_addr))
- return -1;
+ desc_addr = vhost_iova_to_vva(dev,
+ vq, desc->addr,
+ desc->len,
+ VHOST_ACCESS_RO);
+ if (unlikely(!desc_addr)) {
+ error = -1;
+ goto out;
+ }
rte_prefetch0((void *)(uintptr_t)desc_addr);
if (unlikely(cur == NULL)) {
RTE_LOG(ERR, VHOST_DATA, "Failed to "
"allocate memory for mbuf.\n");
- return -1;
+ error = -1;
+ goto out;
}
if (unlikely(dev->dequeue_zero_copy))
rte_mbuf_refcnt_update(cur, 1);
if (hdr)
vhost_dequeue_offload(hdr, m);
- return 0;
+out:
+ vq->batch_copy_nb_elems = copy_nb;
+
+ return error;
}
static __rte_always_inline void
return true;
}
+static __rte_always_inline void
+restore_mbuf(struct rte_mbuf *m)
+{
+ uint32_t mbuf_size, priv_size;
+
+ while (m) {
+ priv_size = rte_pktmbuf_priv_size(m->pool);
+ mbuf_size = sizeof(struct rte_mbuf) + priv_size;
+ /* start of buffer is after mbuf structure and priv data */
+
+ m->buf_addr = (char *)m + mbuf_size;
+ m->buf_iova = rte_mempool_virt2iova(m) + mbuf_size;
+ m = m->next;
+ }
+}
+
uint16_t
rte_vhost_dequeue_burst(int vid, uint16_t queue_id,
struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count)
}
vq = dev->virtqueue[queue_id];
- if (unlikely(vq->enabled == 0))
+
+ if (unlikely(rte_spinlock_trylock(&vq->access_lock) == 0))
return 0;
+ if (unlikely(vq->enabled == 0))
+ goto out_access_unlock;
+
+ vq->batch_copy_nb_elems = 0;
+
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+ vhost_user_iotlb_rd_lock(vq);
+
+ if (unlikely(vq->access_ok == 0))
+ if (unlikely(vring_translate(dev, vq) < 0))
+ goto out;
+
if (unlikely(dev->dequeue_zero_copy)) {
struct zcopy_mbuf *zmbuf, *next;
int nr_updated = 0;
nr_updated += 1;
TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
+ restore_mbuf(zmbuf->mbuf);
rte_pktmbuf_free(zmbuf->mbuf);
put_zmbuf(zmbuf);
vq->nr_zmbuf -= 1;
if (vq->desc[desc_indexes[i]].flags & VRING_DESC_F_INDIRECT) {
desc = (struct vring_desc *)(uintptr_t)
- rte_vhost_gpa_to_vva(dev->mem,
- vq->desc[desc_indexes[i]].addr);
+ vhost_iova_to_vva(dev, vq,
+ vq->desc[desc_indexes[i]].addr,
+ sizeof(*desc),
+ VHOST_ACCESS_RO);
if (unlikely(!desc))
break;
break;
}
- err = copy_desc_to_mbuf(dev, desc, sz, pkts[i], idx, mbuf_pool);
+ err = copy_desc_to_mbuf(dev, vq, desc, sz, pkts[i], idx,
+ mbuf_pool);
if (unlikely(err)) {
rte_pktmbuf_free(pkts[i]);
break;
vq->last_avail_idx += i;
if (likely(dev->dequeue_zero_copy == 0)) {
+ do_data_copy_dequeue(vq);
vq->last_used_idx += i;
update_used_idx(dev, vq, i);
}
out:
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+ vhost_user_iotlb_rd_unlock(vq);
+
+out_access_unlock:
+ rte_spinlock_unlock(&vq->access_lock);
+
if (unlikely(rarp_mbuf != NULL)) {
/*
* Inject it to the head of "pkts" array, so that switch's mac
Code Review / deb_dpdk.git / blobdiff