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* [dpdk-dev] [PATCH] vhost: fix packed ring dequeue offloading
@ 2021-02-05  7:47 Marvin Liu
  2021-02-09 14:52 ` Maxime Coquelin
  0 siblings, 1 reply; 3+ messages in thread
From: Marvin Liu @ 2021-02-05  7:47 UTC (permalink / raw)
  To: maxime.coquelin, chenbo.xia; +Cc: dev, Marvin Liu, stable

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@dpdk.org

Signed-off-by: Marvin Liu <yong.liu@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


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-02-10 21:05 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-05  7:47 [dpdk-dev] [PATCH] vhost: fix packed ring dequeue offloading Marvin Liu
2021-02-09 14:52 ` Maxime Coquelin
2021-02-10 21:05   ` Thomas Monjalon

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