head_flags = flags;
}
- vq->last_used_idx += vq->shadow_used_packed[i].count;
- if (vq->last_used_idx >= vq->size) {
- vq->used_wrap_counter ^= 1;
- vq->last_used_idx -= vq->size;
- }
+ vq_inc_last_used_packed(vq, vq->shadow_used_packed[i].count);
}
__atomic_store_n(&vq->desc_packed[head_idx].flags, head_flags,
for (i = 0; i < count; i++) {
rte_memcpy(elem[i].dst, elem[i].src, elem[i].len);
- vhost_log_cache_write(dev, vq, elem[i].log_addr, elem[i].len);
+ vhost_log_cache_write_iova(dev, vq, elem[i].log_addr,
+ elem[i].len);
PRINT_PACKET(dev, (uintptr_t)elem[i].dst, elem[i].len, 0);
}
PRINT_PACKET(dev, (uintptr_t)dst,
(uint32_t)len, 0);
- vhost_log_cache_write(dev, vq,
+ vhost_log_cache_write_iova(dev, vq,
iova, len);
remain -= len;
} else {
PRINT_PACKET(dev, (uintptr_t)hdr_addr,
dev->vhost_hlen, 0);
- vhost_log_cache_write(dev, vq,
+ vhost_log_cache_write_iova(dev, vq,
buf_vec[0].buf_iova,
dev->vhost_hlen);
}
rte_memcpy((void *)((uintptr_t)(buf_addr + buf_offset)),
rte_pktmbuf_mtod_offset(m, void *, mbuf_offset),
cpy_len);
- vhost_log_cache_write(dev, vq, buf_iova + buf_offset,
- cpy_len);
+ vhost_log_cache_write_iova(dev, vq,
+ buf_iova + buf_offset,
+ cpy_len);
PRINT_PACKET(dev, (uintptr_t)(buf_addr + buf_offset),
cpy_len, 0);
} else {
return error;
}
+static __rte_always_inline int
+vhost_enqueue_single_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct rte_mbuf *pkt,
+ struct buf_vector *buf_vec,
+ uint16_t *nr_descs)
+{
+ uint16_t nr_vec = 0;
+ uint16_t avail_idx = vq->last_avail_idx;
+ uint16_t max_tries, tries = 0;
+ uint16_t buf_id = 0;
+ uint32_t len = 0;
+ uint16_t desc_count;
+ uint32_t size = pkt->pkt_len + dev->vhost_hlen;
+ uint16_t num_buffers = 0;
+
+ if (rxvq_is_mergeable(dev))
+ max_tries = vq->size - 1;
+ else
+ max_tries = 1;
+
+ while (size > 0) {
+ /*
+ * if we tried all available ring items, and still
+ * can't get enough buf, it means something abnormal
+ * happened.
+ */
+ if (unlikely(++tries > max_tries))
+ return -1;
+
+ if (unlikely(fill_vec_buf_packed(dev, vq,
+ avail_idx, &desc_count,
+ buf_vec, &nr_vec,
+ &buf_id, &len,
+ VHOST_ACCESS_RW) < 0))
+ return -1;
+
+ len = RTE_MIN(len, size);
+ size -= len;
+
+ num_buffers += 1;
+
+ *nr_descs += desc_count;
+ avail_idx += desc_count;
+ if (avail_idx >= vq->size)
+ avail_idx -= vq->size;
+ }
+
+ if (copy_mbuf_to_desc(dev, vq, pkt, buf_vec, nr_vec, num_buffers) < 0)
+ return -1;
+
+ return 0;
+}
+
static __rte_noinline uint32_t
virtio_dev_rx_split(struct virtio_net *dev, struct vhost_virtqueue *vq,
struct rte_mbuf **pkts, uint32_t count)
return pkt_idx;
}
+static __rte_unused int
+virtio_dev_rx_batch_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct rte_mbuf **pkts)
+{
+ bool wrap_counter = vq->avail_wrap_counter;
+ struct vring_packed_desc *descs = vq->desc_packed;
+ uint16_t avail_idx = vq->last_avail_idx;
+ uint64_t desc_addrs[PACKED_BATCH_SIZE];
+ struct virtio_net_hdr_mrg_rxbuf *hdrs[PACKED_BATCH_SIZE];
+ uint32_t buf_offset = dev->vhost_hlen;
+ uint64_t lens[PACKED_BATCH_SIZE];
+ uint16_t i;
+
+ if (unlikely(avail_idx & PACKED_BATCH_MASK))
+ return -1;
+
+ if (unlikely((avail_idx + PACKED_BATCH_SIZE) > vq->size))
+ return -1;
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ if (unlikely(pkts[i]->next != NULL))
+ return -1;
+ if (unlikely(!desc_is_avail(&descs[avail_idx + i],
+ wrap_counter)))
+ return -1;
+ }
+
+ rte_smp_rmb();
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE)
+ lens[i] = descs[avail_idx + i].len;
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ if (unlikely(pkts[i]->pkt_len > (lens[i] - buf_offset)))
+ return -1;
+ }
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE)
+ desc_addrs[i] = vhost_iova_to_vva(dev, vq,
+ descs[avail_idx + i].addr,
+ &lens[i],
+ VHOST_ACCESS_RW);
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ if (unlikely(lens[i] != descs[avail_idx + i].len))
+ return -1;
+ }
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ rte_prefetch0((void *)(uintptr_t)desc_addrs[i]);
+ hdrs[i] = (struct virtio_net_hdr_mrg_rxbuf *)
+ (uintptr_t)desc_addrs[i];
+ lens[i] = pkts[i]->pkt_len + dev->vhost_hlen;
+ }
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE)
+ virtio_enqueue_offload(pkts[i], &hdrs[i]->hdr);
+
+ vq_inc_last_avail_packed(vq, PACKED_BATCH_SIZE);
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ rte_memcpy((void *)(uintptr_t)(desc_addrs[i] + buf_offset),
+ rte_pktmbuf_mtod_offset(pkts[i], void *, 0),
+ pkts[i]->pkt_len);
+ }
+
+ return 0;
+}
+
+static __rte_unused int16_t
+virtio_dev_rx_single_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct rte_mbuf *pkt)
+{
+ struct buf_vector buf_vec[BUF_VECTOR_MAX];
+ uint16_t nr_descs = 0;
+
+ rte_smp_rmb();
+ if (unlikely(vhost_enqueue_single_packed(dev, vq, pkt, buf_vec,
+ &nr_descs) < 0)) {
+ VHOST_LOG_DEBUG(VHOST_DATA,
+ "(%d) failed to get enough desc from vring\n",
+ dev->vid);
+ return -1;
+ }
+
+ VHOST_LOG_DEBUG(VHOST_DATA, "(%d) current index %d | end index %d\n",
+ dev->vid, vq->last_avail_idx,
+ vq->last_avail_idx + nr_descs);
+
+ vq_inc_last_avail_packed(vq, nr_descs);
+
+ return 0;
+}
+
static __rte_noinline uint32_t
virtio_dev_rx_packed(struct virtio_net *dev, struct vhost_virtqueue *vq,
struct rte_mbuf **pkts, uint32_t count)
break;
}
- vq->last_avail_idx += nr_descs;
- if (vq->last_avail_idx >= vq->size) {
- vq->last_avail_idx -= vq->size;
- vq->avail_wrap_counter ^= 1;
- }
+ vq_inc_last_avail_packed(vq, nr_descs);
}
do_data_copy_enqueue(dev, vq);
return NULL;
}
+static void
+virtio_dev_extbuf_free(void *addr __rte_unused, void *opaque)
+{
+ rte_free(opaque);
+}
+
+static int
+virtio_dev_extbuf_alloc(struct rte_mbuf *pkt, uint32_t size)
+{
+ struct rte_mbuf_ext_shared_info *shinfo = NULL;
+ uint32_t total_len = RTE_PKTMBUF_HEADROOM + size;
+ uint16_t buf_len;
+ rte_iova_t iova;
+ void *buf;
+
+ /* Try to use pkt buffer to store shinfo to reduce the amount of memory
+ * required, otherwise store shinfo in the new buffer.
+ */
+ if (rte_pktmbuf_tailroom(pkt) >= sizeof(*shinfo))
+ shinfo = rte_pktmbuf_mtod(pkt,
+ struct rte_mbuf_ext_shared_info *);
+ else {
+ total_len += sizeof(*shinfo) + sizeof(uintptr_t);
+ total_len = RTE_ALIGN_CEIL(total_len, sizeof(uintptr_t));
+ }
+
+ if (unlikely(total_len > UINT16_MAX))
+ return -ENOSPC;
+
+ buf_len = total_len;
+ buf = rte_malloc(NULL, buf_len, RTE_CACHE_LINE_SIZE);
+ if (unlikely(buf == NULL))
+ return -ENOMEM;
+
+ /* Initialize shinfo */
+ if (shinfo) {
+ shinfo->free_cb = virtio_dev_extbuf_free;
+ shinfo->fcb_opaque = buf;
+ rte_mbuf_ext_refcnt_set(shinfo, 1);
+ } else {
+ shinfo = rte_pktmbuf_ext_shinfo_init_helper(buf, &buf_len,
+ virtio_dev_extbuf_free, buf);
+ if (unlikely(shinfo == NULL)) {
+ rte_free(buf);
+ RTE_LOG(ERR, VHOST_DATA, "Failed to init shinfo\n");
+ return -1;
+ }
+ }
+
+ iova = rte_malloc_virt2iova(buf);
+ rte_pktmbuf_attach_extbuf(pkt, buf, iova, buf_len, shinfo);
+ rte_pktmbuf_reset_headroom(pkt);
+
+ return 0;
+}
+
+/*
+ * Allocate a host supported pktmbuf.
+ */
+static __rte_always_inline struct rte_mbuf *
+virtio_dev_pktmbuf_alloc(struct virtio_net *dev, struct rte_mempool *mp,
+ uint32_t data_len)
+{
+ struct rte_mbuf *pkt = rte_pktmbuf_alloc(mp);
+
+ if (unlikely(pkt == NULL))
+ return NULL;
+
+ if (rte_pktmbuf_tailroom(pkt) >= data_len)
+ return pkt;
+
+ /* attach an external buffer if supported */
+ if (dev->extbuf && !virtio_dev_extbuf_alloc(pkt, data_len))
+ return pkt;
+
+ /* check if chained buffers are allowed */
+ if (!dev->linearbuf)
+ return pkt;
+
+ /* Data doesn't fit into the buffer and the host supports
+ * only linear buffers
+ */
+ rte_pktmbuf_free(pkt);
+
+ return NULL;
+}
+
static __rte_noinline uint16_t
virtio_dev_tx_split(struct virtio_net *dev, struct vhost_virtqueue *vq,
struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count)
for (i = 0; i < count; i++) {
struct buf_vector buf_vec[BUF_VECTOR_MAX];
uint16_t head_idx;
- uint32_t dummy_len;
+ uint32_t buf_len;
uint16_t nr_vec = 0;
int err;
if (unlikely(fill_vec_buf_split(dev, vq,
vq->last_avail_idx + i,
&nr_vec, buf_vec,
- &head_idx, &dummy_len,
+ &head_idx, &buf_len,
VHOST_ACCESS_RO) < 0))
break;
if (likely(dev->dequeue_zero_copy == 0))
update_shadow_used_ring_split(vq, head_idx, 0);
- pkts[i] = rte_pktmbuf_alloc(mbuf_pool);
- if (unlikely(pkts[i] == NULL)) {
- RTE_LOG(ERR, VHOST_DATA,
- "Failed to allocate memory for mbuf.\n");
+ pkts[i] = virtio_dev_pktmbuf_alloc(dev, mbuf_pool, buf_len);
+ if (unlikely(pkts[i] == NULL))
break;
- }
err = copy_desc_to_mbuf(dev, vq, buf_vec, nr_vec, pkts[i],
mbuf_pool);
return i;
}
+static __rte_always_inline int
+vhost_reserve_avail_batch_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct rte_mempool *mbuf_pool,
+ struct rte_mbuf **pkts,
+ uint16_t avail_idx,
+ uintptr_t *desc_addrs,
+ uint16_t *ids)
+{
+ bool wrap = vq->avail_wrap_counter;
+ struct vring_packed_desc *descs = vq->desc_packed;
+ struct virtio_net_hdr *hdr;
+ uint64_t lens[PACKED_BATCH_SIZE];
+ uint64_t buf_lens[PACKED_BATCH_SIZE];
+ uint32_t buf_offset = dev->vhost_hlen;
+ uint16_t flags, i;
+
+ if (unlikely(avail_idx & PACKED_BATCH_MASK))
+ return -1;
+ if (unlikely((avail_idx + PACKED_BATCH_SIZE) > vq->size))
+ return -1;
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ flags = descs[avail_idx + i].flags;
+ if (unlikely((wrap != !!(flags & VRING_DESC_F_AVAIL)) ||
+ (wrap == !!(flags & VRING_DESC_F_USED)) ||
+ (flags & PACKED_DESC_SINGLE_DEQUEUE_FLAG)))
+ return -1;
+ }
+
+ rte_smp_rmb();
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE)
+ lens[i] = descs[avail_idx + i].len;
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ desc_addrs[i] = vhost_iova_to_vva(dev, vq,
+ descs[avail_idx + i].addr,
+ &lens[i], VHOST_ACCESS_RW);
+ }
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ if (unlikely((lens[i] != descs[avail_idx + i].len)))
+ return -1;
+ }
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ pkts[i] = virtio_dev_pktmbuf_alloc(dev, mbuf_pool, lens[i]);
+ if (!pkts[i])
+ goto free_buf;
+ }
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE)
+ buf_lens[i] = pkts[i]->buf_len - pkts[i]->data_off;
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ if (unlikely(buf_lens[i] < (lens[i] - buf_offset)))
+ goto free_buf;
+ }
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ pkts[i]->pkt_len = descs[avail_idx + i].len - buf_offset;
+ pkts[i]->data_len = pkts[i]->pkt_len;
+ ids[i] = descs[avail_idx + i].id;
+ }
+
+ if (virtio_net_with_host_offload(dev)) {
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE) {
+ hdr = (struct virtio_net_hdr *)(desc_addrs[i]);
+ vhost_dequeue_offload(hdr, pkts[i]);
+ }
+ }
+
+ return 0;
+
+free_buf:
+ for (i = 0; i < PACKED_BATCH_SIZE; i++)
+ rte_pktmbuf_free(pkts[i]);
+
+ return -1;
+}
+
+static __rte_unused int
+virtio_dev_tx_batch_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct rte_mempool *mbuf_pool,
+ struct rte_mbuf **pkts)
+{
+ uint16_t avail_idx = vq->last_avail_idx;
+ uint32_t buf_offset = dev->vhost_hlen;
+ uintptr_t desc_addrs[PACKED_BATCH_SIZE];
+ uint16_t ids[PACKED_BATCH_SIZE];
+ uint16_t i;
+
+ if (vhost_reserve_avail_batch_packed(dev, vq, mbuf_pool, pkts,
+ avail_idx, desc_addrs, ids))
+ return -1;
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE)
+ rte_prefetch0((void *)(uintptr_t)desc_addrs[i]);
+
+ vhost_for_each_try_unroll(i, 0, PACKED_BATCH_SIZE)
+ rte_memcpy(rte_pktmbuf_mtod_offset(pkts[i], void *, 0),
+ (void *)(uintptr_t)(desc_addrs[i] + buf_offset),
+ pkts[i]->pkt_len);
+
+ vq_inc_last_avail_packed(vq, PACKED_BATCH_SIZE);
+
+ return 0;
+}
+
+static __rte_always_inline int
+vhost_dequeue_single_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct rte_mempool *mbuf_pool,
+ struct rte_mbuf **pkts,
+ uint16_t *buf_id,
+ uint16_t *desc_count)
+{
+ struct buf_vector buf_vec[BUF_VECTOR_MAX];
+ uint32_t buf_len;
+ uint16_t nr_vec = 0;
+ int err;
+
+ if (unlikely(fill_vec_buf_packed(dev, vq,
+ vq->last_avail_idx, desc_count,
+ buf_vec, &nr_vec,
+ buf_id, &buf_len,
+ VHOST_ACCESS_RO) < 0))
+ return -1;
+
+ *pkts = virtio_dev_pktmbuf_alloc(dev, mbuf_pool, buf_len);
+ if (unlikely(*pkts == NULL)) {
+ RTE_LOG(ERR, VHOST_DATA,
+ "Failed to allocate memory for mbuf.\n");
+ return -1;
+ }
+
+ err = copy_desc_to_mbuf(dev, vq, buf_vec, nr_vec, *pkts,
+ mbuf_pool);
+ if (unlikely(err)) {
+ rte_pktmbuf_free(*pkts);
+ return -1;
+ }
+
+ return 0;
+}
+
+static __rte_unused int
+virtio_dev_tx_single_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct rte_mempool *mbuf_pool,
+ struct rte_mbuf **pkts)
+{
+
+ uint16_t buf_id, desc_count;
+
+ if (vhost_dequeue_single_packed(dev, vq, mbuf_pool, pkts, &buf_id,
+ &desc_count))
+ return -1;
+
+ vq_inc_last_avail_packed(vq, desc_count);
+
+ return 0;
+}
+
static __rte_noinline uint16_t
virtio_dev_tx_packed(struct virtio_net *dev, struct vhost_virtqueue *vq,
struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count)
for (i = 0; i < count; i++) {
struct buf_vector buf_vec[BUF_VECTOR_MAX];
uint16_t buf_id;
- uint32_t dummy_len;
+ uint32_t buf_len;
uint16_t desc_count, nr_vec = 0;
int err;
if (unlikely(fill_vec_buf_packed(dev, vq,
vq->last_avail_idx, &desc_count,
buf_vec, &nr_vec,
- &buf_id, &dummy_len,
+ &buf_id, &buf_len,
VHOST_ACCESS_RO) < 0))
break;
update_shadow_used_ring_packed(vq, buf_id, 0,
desc_count);
- pkts[i] = rte_pktmbuf_alloc(mbuf_pool);
- if (unlikely(pkts[i] == NULL)) {
- RTE_LOG(ERR, VHOST_DATA,
- "Failed to allocate memory for mbuf.\n");
+ pkts[i] = virtio_dev_pktmbuf_alloc(dev, mbuf_pool, buf_len);
+ if (unlikely(pkts[i] == NULL))
break;
- }
err = copy_desc_to_mbuf(dev, vq, buf_vec, nr_vec, pkts[i],
mbuf_pool);
TAILQ_INSERT_TAIL(&vq->zmbuf_list, zmbuf, next);
}
- vq->last_avail_idx += desc_count;
- if (vq->last_avail_idx >= vq->size) {
- vq->last_avail_idx -= vq->size;
- vq->avail_wrap_counter ^= 1;
- }
+ vq_inc_last_avail_packed(vq, desc_count);
}
if (likely(dev->dequeue_zero_copy == 0)) {
git.droids-corp.org / dpdk.git / blobdiff