From: Tiwei Bie <tiwei.bie@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: zhihong.wang@intel.com, jfreimann@redhat.com, dev@dpdk.org,
mst@redhat.com, jasowang@redhat.com, wexu@redhat.com
Subject: Re: [dpdk-dev] [PATCH v6 10/15] vhost: create descriptor mapping function
Date: Wed, 4 Jul 2018 13:56:30 +0800 [thread overview]
Message-ID: <20180704055630.GE28826@debian> (raw)
In-Reply-To: <20180702081629.29258-11-maxime.coquelin@redhat.com>
On Mon, Jul 02, 2018 at 10:16:24AM +0200, Maxime Coquelin wrote:
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
> lib/librte_vhost/virtio_net.c | 61 ++++++++++++++++++++++++++-----------------
> 1 file changed, 37 insertions(+), 24 deletions(-)
>
> diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
> index f0e2e6a1f..64664b7de 100644
> --- a/lib/librte_vhost/virtio_net.c
> +++ b/lib/librte_vhost/virtio_net.c
> @@ -292,6 +292,37 @@ virtio_enqueue_offload(struct rte_mbuf *m_buf, struct virtio_net_hdr *net_hdr)
> }
> }
>
> +static __rte_always_inline int
> +map_one_desc(struct virtio_net *dev, struct vhost_virtqueue *vq,
> + struct buf_vector *buf_vec, uint16_t *vec_idx,
> + uint64_t desc_iova, uint64_t desc_len, uint8_t perm)
> +{
> + uint16_t vec_id = *vec_idx;
> +
> + while (desc_len) {
> + uint64_t desc_addr;
> + uint64_t desc_chunck_len = desc_len;
> +
> + desc_addr = vhost_iova_to_vva(dev, vq,
> + desc_iova,
> + &desc_chunck_len,
> + perm);
> + if (unlikely(!desc_addr))
> + return -1;
> +
> + buf_vec[vec_id].buf_iova = desc_iova;
> + buf_vec[vec_id].buf_addr = desc_addr;
> + buf_vec[vec_id].buf_len = desc_chunck_len;
> +
> + desc_len -= desc_chunck_len;
> + desc_iova += desc_chunck_len;
> + vec_id++;
FYI, a rebase on top of the latest "vhost: generalize
buffer vectors" series is needed to make sure that
access buf_vec[vec_id] won't cause overflow.
> + }
> + *vec_idx = vec_id;
> +
> + return 0;
> +}
> +
[...]
next prev parent reply other threads:[~2018-07-04 5:56 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-02 8:16 [dpdk-dev] [PATCH v6 00/15] Vhost: add support to packed ring layout Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 01/15] vhost: add virtio packed virtqueue defines Maxime Coquelin
2018-07-04 5:37 ` Tiwei Bie
2018-07-04 16:03 ` Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 02/15] vhost: add helpers for packed virtqueues Maxime Coquelin
2018-07-04 5:39 ` Tiwei Bie
2018-07-04 16:03 ` Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 03/15] vhost: vring address setup for packed queues Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 04/15] vhost: clear shadow used table index at flush time Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 05/15] vhost: make indirect desc table copy desc type agnostic Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 06/15] vhost: clear batch copy index at copy time Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 07/15] vhost: extract split ring handling from Rx and Tx functions Maxime Coquelin
2018-07-04 6:51 ` Tiwei Bie
2018-07-04 21:04 ` Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 08/15] vhost: append shadow used ring function names with split Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 09/15] vhost: add shadow used ring support for packed rings Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 10/15] vhost: create descriptor mapping function Maxime Coquelin
2018-07-04 5:56 ` Tiwei Bie [this message]
2018-07-04 16:18 ` Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 11/15] vhost: add vector filling support for packed ring Maxime Coquelin
2018-07-04 5:53 ` Tiwei Bie
2018-07-04 16:18 ` Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 12/15] vhost: add Rx " Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 13/15] vhost: add Tx " Maxime Coquelin
2018-07-04 5:45 ` Tiwei Bie
2018-07-04 16:09 ` Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 14/15] vhost: add notification " Maxime Coquelin
2018-07-03 5:57 ` Jason Wang
2018-07-03 6:43 ` Maxime Coquelin
2018-07-03 6:06 ` Jason Wang
2018-07-04 16:02 ` Maxime Coquelin
2018-07-04 6:25 ` Tiwei Bie
2018-07-04 20:20 ` Maxime Coquelin
2018-07-02 8:16 ` [dpdk-dev] [PATCH v6 15/15] vhost: advertize packed ring layout support Maxime Coquelin
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