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From: xuan.ding@intel.com
To: maxime.coquelin@redhat.com, chenbo.xia@intel.com
Cc: dev@dpdk.org, jiayu.hu@intel.com, cheng1.jiang@intel.com,
	sunil.pai.g@intel.com, liangma@liangbit.com,
	Xuan Ding <xuan.ding@intel.com>
Subject: [PATCH v1 2/5] vhost: prepare async for descriptor to mbuf refactoring
Date: Thu,  7 Apr 2022 15:25:43 +0000	[thread overview]
Message-ID: <20220407152546.38167-3-xuan.ding@intel.com> (raw)
In-Reply-To: <20220407152546.38167-1-xuan.ding@intel.com>

From: Xuan Ding <xuan.ding@intel.com>

This patch refactors vhost async enqueue path and dequeue path to use
the same function async_fill_seg() for preparing batch elements,
which simplies the code without performance degradation.

Signed-off-by: Xuan Ding <xuan.ding@intel.com>
---
 lib/vhost/virtio_net.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
index a2d04a1f60..709ff483a3 100644
--- a/lib/vhost/virtio_net.c
+++ b/lib/vhost/virtio_net.c
@@ -997,13 +997,14 @@ async_iter_reset(struct vhost_async *async)
 }
 
 static __rte_always_inline int
-async_mbuf_to_desc_seg(struct virtio_net *dev, struct vhost_virtqueue *vq,
+async_fill_seg(struct virtio_net *dev, struct vhost_virtqueue *vq,
 		struct rte_mbuf *m, uint32_t mbuf_offset,
-		uint64_t buf_iova, uint32_t cpy_len)
+		uint64_t buf_iova, uint32_t cpy_len, bool to_desc)
 {
 	struct vhost_async *async = vq->async;
 	uint64_t mapped_len;
 	uint32_t buf_offset = 0;
+	void *src, *dst;
 	void *host_iova;
 
 	while (cpy_len) {
@@ -1015,10 +1016,16 @@ async_mbuf_to_desc_seg(struct virtio_net *dev, struct vhost_virtqueue *vq,
 			return -1;
 		}
 
-		if (unlikely(async_iter_add_iovec(dev, async,
-						(void *)(uintptr_t)rte_pktmbuf_iova_offset(m,
-							mbuf_offset),
-						host_iova, (size_t)mapped_len)))
+		if (to_desc) {
+			src = (void *)(uintptr_t)rte_pktmbuf_iova_offset(m, mbuf_offset);
+			dst = host_iova;
+		} else {
+			src = host_iova;
+			dst = (void *)(uintptr_t)rte_pktmbuf_iova_offset(m, mbuf_offset);
+		}
+
+		if (unlikely(async_iter_add_iovec(dev, async, src, dst,
+						 (size_t)mapped_len)))
 			return -1;
 
 		cpy_len -= (uint32_t)mapped_len;
@@ -1161,8 +1168,8 @@ mbuf_to_desc(struct virtio_net *dev, struct vhost_virtqueue *vq,
 		cpy_len = RTE_MIN(buf_avail, mbuf_avail);
 
 		if (is_async) {
-			if (async_mbuf_to_desc_seg(dev, vq, m, mbuf_offset,
-						buf_iova + buf_offset, cpy_len) < 0)
+			if (async_fill_seg(dev, vq, m, mbuf_offset,
+						buf_iova + buf_offset, cpy_len, true) < 0)
 				goto error;
 		} else {
 			sync_fill_seg(dev, vq, m, mbuf_offset,
-- 
2.17.1


  parent reply	other threads:[~2022-04-07 15:31 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-07 15:25 [PATCH v1 0/5] vhost: support async dequeue data path xuan.ding
2022-04-07 15:25 ` [PATCH v1 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-04-07 15:25 ` xuan.ding [this message]
2022-04-07 15:25 ` [PATCH v1 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-04-07 15:25 ` [PATCH v1 4/5] vhost: support async dequeue for split ring xuan.ding
2022-04-07 15:25 ` [PATCH v1 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-04-11 10:00 ` [PATCH v2 0/5] vhost: " xuan.ding
2022-04-11 10:00   ` [PATCH v2 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-04-11 10:00   ` [PATCH v2 2/5] vhost: prepare async " xuan.ding
2022-04-11 10:00   ` [PATCH v2 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-04-11 10:00   ` [PATCH v2 4/5] vhost: support async dequeue for split ring xuan.ding
2022-04-11 10:00   ` [PATCH v2 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-04-19  3:43 ` [PATCH v3 0/5] vhost: " xuan.ding
2022-04-19  3:43   ` [PATCH v3 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-04-22 15:30     ` Maxime Coquelin
2022-04-19  3:43   ` [PATCH v3 2/5] vhost: prepare async " xuan.ding
2022-04-22 15:32     ` Maxime Coquelin
2022-04-19  3:43   ` [PATCH v3 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-04-22 11:06     ` David Marchand
2022-04-22 15:46       ` Maxime Coquelin
2022-04-24  2:02         ` Ding, Xuan
2022-04-22 15:43     ` Maxime Coquelin
2022-04-19  3:43   ` [PATCH v3 4/5] vhost: support async dequeue for split ring xuan.ding
2022-04-19  3:43   ` [PATCH v3 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-05-05  6:23 ` [PATCH v4 0/5] vhost: " xuan.ding
2022-05-05  6:23   ` [PATCH v4 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-05-05  7:37     ` Yang, YvonneX
2022-05-05  6:23   ` [PATCH v4 2/5] vhost: prepare async " xuan.ding
2022-05-05  7:38     ` Yang, YvonneX
2022-05-05  6:23   ` [PATCH v4 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-05-05  7:39     ` Yang, YvonneX
2022-05-05  6:23   ` [PATCH v4 4/5] vhost: support async dequeue for split ring xuan.ding
2022-05-05  7:40     ` Yang, YvonneX
2022-05-05 19:36     ` Maxime Coquelin
2022-05-05  6:23   ` [PATCH v4 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-05-05  7:39     ` Yang, YvonneX
2022-05-05 19:38     ` Maxime Coquelin
2022-05-05 19:52   ` [PATCH v4 0/5] vhost: " Maxime Coquelin
2022-05-06  1:49     ` Ding, Xuan
2022-05-13  2:00 ` [PATCH v5 " xuan.ding
2022-05-13  2:00   ` [PATCH v5 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-05-13  2:00   ` [PATCH v5 2/5] vhost: prepare async " xuan.ding
2022-05-13  2:00   ` [PATCH v5 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-05-13  2:00   ` [PATCH v5 4/5] vhost: support async dequeue for split ring xuan.ding
2022-05-13  2:24     ` Stephen Hemminger
2022-05-13  2:33       ` Ding, Xuan
2022-05-13  2:00   ` [PATCH v5 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-05-13  2:50 ` [PATCH v6 0/5] vhost: " xuan.ding
2022-05-13  2:50   ` [PATCH v6 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-05-13  2:50   ` [PATCH v6 2/5] vhost: prepare async " xuan.ding
2022-05-13  2:50   ` [PATCH v6 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-05-13  2:50   ` [PATCH v6 4/5] vhost: support async dequeue for split ring xuan.ding
2022-05-13  2:50   ` [PATCH v6 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-05-13  3:27     ` Xia, Chenbo
2022-05-13  3:51       ` Ding, Xuan
2022-05-16  2:43 ` [PATCH v7 0/5] vhost: " xuan.ding
2022-05-16  2:43   ` [PATCH v7 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-05-16  2:43   ` [PATCH v7 2/5] vhost: prepare async " xuan.ding
2022-05-16  2:43   ` [PATCH v7 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-05-16  2:43   ` [PATCH v7 4/5] vhost: support async dequeue for split ring xuan.ding
2022-05-16  5:52     ` Hu, Jiayu
2022-05-16  6:10       ` Ding, Xuan
2022-05-16  2:43   ` [PATCH v7 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-05-16 11:10 ` [PATCH v8 0/5] vhost: " xuan.ding
2022-05-16 11:10   ` [PATCH v8 1/5] vhost: prepare sync for descriptor to mbuf refactoring xuan.ding
2022-05-16 11:10   ` [PATCH v8 2/5] vhost: prepare async " xuan.ding
2022-05-16 11:10   ` [PATCH v8 3/5] vhost: merge sync and async descriptor to mbuf filling xuan.ding
2022-05-16 11:10   ` [PATCH v8 4/5] vhost: support async dequeue for split ring xuan.ding
2022-06-16 14:38     ` David Marchand
2022-06-16 14:40       ` David Marchand
2022-06-17  6:34         ` Ding, Xuan
2022-05-16 11:10   ` [PATCH v8 5/5] examples/vhost: support async dequeue data path xuan.ding
2022-05-17 13:22   ` [PATCH v8 0/5] vhost: " Maxime Coquelin

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