[dpdk-stable] [PATCH] vhost: fix packed ring dequeue offloading
Marvin Liu
yong.liu at intel.com
Fri Feb 5 08:47:58 CET 2021
When vhost doing dequeue offloading, will parse ethernet and l3/l4
header of the packet. Then vhost will set corresponded value in mbuf
attributes. Thus mean offloading action should after packet data copy.
Fixes: 75ed51697820 ("vhost: add packed ring batch dequeue")
Cc: stable at dpdk.org
Signed-off-by: Marvin Liu <yong.liu at intel.com>
diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 730b92e478..0a7d008a91 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -2267,7 +2267,6 @@ vhost_reserve_avail_batch_packed(struct virtio_net *dev,
{
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 = sizeof(struct virtio_net_hdr_mrg_rxbuf);
@@ -2324,13 +2323,6 @@ vhost_reserve_avail_batch_packed(struct virtio_net *dev,
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:
@@ -2348,6 +2340,7 @@ virtio_dev_tx_batch_packed(struct virtio_net *dev,
{
uint16_t avail_idx = vq->last_avail_idx;
uint32_t buf_offset = sizeof(struct virtio_net_hdr_mrg_rxbuf);
+ struct virtio_net_hdr *hdr;
uintptr_t desc_addrs[PACKED_BATCH_SIZE];
uint16_t ids[PACKED_BATCH_SIZE];
uint16_t i;
@@ -2364,6 +2357,13 @@ virtio_dev_tx_batch_packed(struct virtio_net *dev,
(void *)(uintptr_t)(desc_addrs[i] + buf_offset),
pkts[i]->pkt_len);
+ 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]);
+ }
+ }
+
if (virtio_net_is_inorder(dev))
vhost_shadow_dequeue_batch_packed_inorder(vq,
ids[PACKED_BATCH_SIZE - 1]);
--
2.17.1
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