From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: xuan.ding@intel.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
Subject: Re: [PATCH v3 2/5] vhost: prepare async for descriptor to mbuf refactoring
Date: Fri, 22 Apr 2022 17:32:31 +0200 [thread overview]
Message-ID: <a0b4821d-7b24-2358-5d0f-de1b66de8a1a@redhat.com> (raw)
In-Reply-To: <20220419034323.92820-3-xuan.ding@intel.com>
On 4/19/22 05:43, xuan.ding@intel.com wrote:
> 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 simplifies 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 6d53016c75..391fb82f0e 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)))
Minor, but it may fit in a single line.
> return -1;
>
> cpy_len -= (uint32_t)mapped_len;
> @@ -1167,8 +1174,8 @@ 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,
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Thanks,
Maxime
next prev parent reply other threads:[~2022-04-22 15:32 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 ` [PATCH v1 2/5] vhost: prepare async " xuan.ding
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 [this message]
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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