From: "Michael S. Tsirkin" <mst@redhat.com>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v5 resend 04/12] vhost: rxtx: prepare work for multiple queue support
Date: Sun, 20 Sep 2015 12:29:17 +0300 [thread overview]
Message-ID: <20150920122806-mutt-send-email-mst@redhat.com> (raw)
In-Reply-To: <1442589061-19225-5-git-send-email-yuanhan.liu@linux.intel.com>
On Fri, Sep 18, 2015 at 11:10:53PM +0800, Yuanhan Liu wrote:
> From: Changchun Ouyang <changchun.ouyang@intel.com>
>
> Do not use VIRTIO_RXQ or VIRTIO_TXQ anymore; use the queue_id,
> instead, which will be set to a proper value for a specific queue
> when we have multiple queue support enabled.
>
> For now, queue_id is still set with VIRTIO_RXQ or VIRTIO_TXQ,
> so it should not break anything.
>
> Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
What I'm missing is the logic that tracks which tx vq
did a specific flow use, to send traffic back on the correct
rx vq.
Is this something added by one of the follow-up patches?
> ---
> lib/librte_vhost/vhost_rxtx.c | 46 ++++++++++++++++++++++++++++++-------------
> 1 file changed, 32 insertions(+), 14 deletions(-)
>
> diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
> index b2b2bcc..a4ab6ca 100644
> --- a/lib/librte_vhost/vhost_rxtx.c
> +++ b/lib/librte_vhost/vhost_rxtx.c
> @@ -42,6 +42,16 @@
>
> #define MAX_PKT_BURST 32
>
> +static inline int __attribute__((always_inline))
> +is_valid_virt_queue_idx(uint32_t virtq_idx, int is_tx, uint32_t max_qp_idx)
> +{
> + if ((is_tx ^ (virtq_idx & 0x1)) ||
> + (virtq_idx >= max_qp_idx * VIRTIO_QNUM))
> + return 0;
> +
> + return 1;
> +}
> +
> /**
> * This function adds buffers to the virtio devices RX virtqueue. Buffers can
> * be received from the physical port or from another virtio device. A packet
> @@ -68,12 +78,14 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
> uint8_t success = 0;
>
> LOG_DEBUG(VHOST_DATA, "(%"PRIu64") virtio_dev_rx()\n", dev->device_fh);
> - if (unlikely(queue_id != VIRTIO_RXQ)) {
> - LOG_DEBUG(VHOST_DATA, "mq isn't supported in this version.\n");
> + if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->virt_qp_nb))) {
> + RTE_LOG(ERR, VHOST_DATA,
> + "%s (%"PRIu64"): virtqueue idx:%d invalid.\n",
> + __func__, dev->device_fh, queue_id);
> return 0;
> }
>
> - vq = dev->virtqueue[VIRTIO_RXQ];
> + vq = dev->virtqueue[queue_id];
> count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count;
>
> /*
> @@ -235,8 +247,9 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
> }
>
> static inline uint32_t __attribute__((always_inline))
> -copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx,
> - uint16_t res_end_idx, struct rte_mbuf *pkt)
> +copy_from_mbuf_to_vring(struct virtio_net *dev, uint32_t queue_id,
> + uint16_t res_base_idx, uint16_t res_end_idx,
> + struct rte_mbuf *pkt)
> {
> uint32_t vec_idx = 0;
> uint32_t entry_success = 0;
> @@ -264,7 +277,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx,
> * Convert from gpa to vva
> * (guest physical addr -> vhost virtual addr)
> */
> - vq = dev->virtqueue[VIRTIO_RXQ];
> + vq = dev->virtqueue[queue_id];
> vb_addr = gpa_to_vva(dev, vq->buf_vec[vec_idx].buf_addr);
> vb_hdr_addr = vb_addr;
>
> @@ -464,11 +477,14 @@ virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
>
> LOG_DEBUG(VHOST_DATA, "(%"PRIu64") virtio_dev_merge_rx()\n",
> dev->device_fh);
> - if (unlikely(queue_id != VIRTIO_RXQ)) {
> - LOG_DEBUG(VHOST_DATA, "mq isn't supported in this version.\n");
> + if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->virt_qp_nb))) {
> + RTE_LOG(ERR, VHOST_DATA,
> + "%s (%"PRIu64"): virtqueue idx:%d invalid.\n",
> + __func__, dev->device_fh, queue_id);
> + return 0;
> }
>
> - vq = dev->virtqueue[VIRTIO_RXQ];
> + vq = dev->virtqueue[queue_id];
> count = RTE_MIN((uint32_t)MAX_PKT_BURST, count);
>
> if (count == 0)
> @@ -509,8 +525,8 @@ virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
> res_cur_idx);
> } while (success == 0);
>
> - entry_success = copy_from_mbuf_to_vring(dev, res_base_idx,
> - res_cur_idx, pkts[pkt_idx]);
> + entry_success = copy_from_mbuf_to_vring(dev, queue_id,
> + res_base_idx, res_cur_idx, pkts[pkt_idx]);
>
> rte_compiler_barrier();
>
> @@ -559,12 +575,14 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
> uint16_t free_entries, entry_success = 0;
> uint16_t avail_idx;
>
> - if (unlikely(queue_id != VIRTIO_TXQ)) {
> - LOG_DEBUG(VHOST_DATA, "mq isn't supported in this version.\n");
> + if (unlikely(!is_valid_virt_queue_idx(queue_id, 1, dev->virt_qp_nb))) {
> + RTE_LOG(ERR, VHOST_DATA,
> + "%s (%"PRIu64"): virtqueue idx:%d invalid.\n",
> + __func__, dev->device_fh, queue_id);
> return 0;
> }
>
> - vq = dev->virtqueue[VIRTIO_TXQ];
> + vq = dev->virtqueue[queue_id];
> avail_idx = *((volatile uint16_t *)&vq->avail->idx);
>
> /* If there are no available buffers then return. */
> --
> 1.9.0
next prev parent reply other threads:[~2015-09-20 9:29 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-18 15:10 [dpdk-dev] [PATCH v5 resend 00/12] vhost-user multiple queues enabling Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 01/12] vhost-user: add protocol features support Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 02/12] vhost-user: add VHOST_USER_GET_QUEUE_NUM message Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 03/12] vhost: vring queue setup for multiple queue support Yuanhan Liu
2015-09-20 13:58 ` Marcel Apfelbaum
2015-09-21 2:06 ` Yuanhan Liu
2015-09-21 17:56 ` Marcel Apfelbaum
2015-09-22 7:31 ` Yuanhan Liu
2015-09-22 8:10 ` Marcel Apfelbaum
2015-09-22 8:34 ` Yuanhan Liu
2015-09-22 8:47 ` Marcel Apfelbaum
2015-09-22 9:21 ` Yuanhan Liu
2015-09-22 10:06 ` Marcel Apfelbaum
2015-09-22 14:22 ` Yuanhan Liu
2015-09-22 14:51 ` Marcel Apfelbaum
2015-09-23 3:46 ` Yuanhan Liu
2015-09-24 9:51 ` Marcel Apfelbaum
2015-09-21 9:07 ` Michael S. Tsirkin
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 04/12] vhost: rxtx: prepare work " Yuanhan Liu
2015-09-20 9:29 ` Michael S. Tsirkin [this message]
2015-09-21 2:25 ` Yuanhan Liu
2015-09-21 9:04 ` Michael S. Tsirkin
2015-09-22 2:54 ` Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 05/12] vhost: add VHOST_USER_SET_VRING_ENABLE message Yuanhan Liu
2015-09-20 9:37 ` Michael S. Tsirkin
2015-09-21 2:22 ` Yuanhan Liu
2015-09-21 9:02 ` Michael S. Tsirkin
2015-09-22 2:21 ` Yuanhan Liu
2015-09-23 8:43 ` Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 06/12] vhost-user: handle VHOST_USER_RESET_OWNER correctly Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 07/12] virtio: resolve for control queue Yuanhan Liu
2015-09-20 9:21 ` Michael S. Tsirkin
2015-09-21 6:36 ` Yuanhan Liu
2015-10-08 15:32 ` Nikita Kalyazin
2015-10-08 20:51 ` Steffen Bauch
2015-10-09 7:11 ` Nikita Kalyazin
2015-10-12 8:39 ` Yuanhan Liu
2015-10-12 9:31 ` Xie, Huawei
2015-10-12 9:56 ` Xie, Huawei
2015-10-12 20:58 ` Steffen Bauch
2015-10-13 9:54 ` Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 08/12] vhost-user: enable vhost-user multiple queue Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 09/12] vhost: add API bind a virtq to a specific core Yuanhan Liu
2015-09-18 15:10 ` [dpdk-dev] [PATCH v5 resend 10/12] ixgbe: support VMDq RSS in non-SRIOV environment Yuanhan Liu
2015-09-18 15:11 ` [dpdk-dev] [PATCH v5 resend 11/12] examples/vhost: demonstrate the usage of vhost mq feature Yuanhan Liu
2015-09-18 15:11 ` [dpdk-dev] [PATCH v5 resend 12/12] examples/vhost: add per queue stats Yuanhan Liu
2015-09-20 11:48 ` [dpdk-dev] [PATCH v5 resend 00/12] vhost-user multiple queues enabling Marcel Apfelbaum
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