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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: Matan Azrad <matan@mellanox.com>, Xiao Wang <xiao.w.wang@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v1 1/4] vhost: support host notifier queue configuration
Date: Fri, 19 Jun 2020 08:44:55 +0200
Message-ID: <b97d38a9-3264-41d0-4ccf-ce3d4cb2620a@redhat.com> (raw)
In-Reply-To: <1592497686-433697-2-git-send-email-matan@mellanox.com>



On 6/18/20 6:28 PM, Matan Azrad wrote:
> As an arrangement to per queue operations in the vDPA device it is
> needed to change the next experimental API:
> 
> The API ``rte_vhost_host_notifier_ctrl`` was changed to be per queue
> instead of per device.
> 
> A `qid` parameter was added to the API arguments list.
> 
> Setting the parameter to the value VHOST_QUEUE_ALL will configure the
> host notifier to all the device queues as done before this patch.
> 
> Signed-off-by: Matan Azrad <matan@mellanox.com>
> ---
>  doc/guides/rel_notes/release_20_08.rst |  2 ++
>  drivers/vdpa/ifc/ifcvf_vdpa.c          |  6 +++---
>  drivers/vdpa/mlx5/mlx5_vdpa.c          |  5 +++--
>  lib/librte_vhost/rte_vdpa.h            |  8 ++++++--
>  lib/librte_vhost/rte_vhost.h           |  2 ++
>  lib/librte_vhost/vhost.h               |  3 ---
>  lib/librte_vhost/vhost_user.c          | 18 ++++++++++++++----
>  7 files changed, 30 insertions(+), 14 deletions(-)
> 
> diff --git a/doc/guides/rel_notes/release_20_08.rst b/doc/guides/rel_notes/release_20_08.rst
> index ba16d3b..9732959 100644
> --- a/doc/guides/rel_notes/release_20_08.rst
> +++ b/doc/guides/rel_notes/release_20_08.rst
> @@ -111,6 +111,8 @@ API Changes
>     Also, make sure to start the actual text at the margin.
>     =========================================================
>  
> +* vhost: The API of ``rte_vhost_host_notifier_ctrl`` was changed to be per
> +  queue and not per device, a qid parameter was added to the arguments list.
>  
>  ABI Changes
>  -----------
> diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c
> index ec97178..336837a 100644
> --- a/drivers/vdpa/ifc/ifcvf_vdpa.c
> +++ b/drivers/vdpa/ifc/ifcvf_vdpa.c
> @@ -839,7 +839,7 @@ struct internal_list {
>  	vdpa_ifcvf_stop(internal);
>  	vdpa_disable_vfio_intr(internal);
>  
> -	ret = rte_vhost_host_notifier_ctrl(vid, false);
> +	ret = rte_vhost_host_notifier_ctrl(vid, VHOST_QUEUE_ALL, false);
>  	if (ret && ret != -ENOTSUP)
>  		goto error;
>  
> @@ -858,7 +858,7 @@ struct internal_list {
>  	if (ret)
>  		goto stop_vf;
>  
> -	rte_vhost_host_notifier_ctrl(vid, true);
> +	rte_vhost_host_notifier_ctrl(vid, VHOST_QUEUE_ALL, true);
>  
>  	internal->sw_fallback_running = true;
>  
> @@ -893,7 +893,7 @@ struct internal_list {
>  	rte_atomic32_set(&internal->dev_attached, 1);
>  	update_datapath(internal);
>  
> -	if (rte_vhost_host_notifier_ctrl(vid, true) != 0)
> +	if (rte_vhost_host_notifier_ctrl(vid, VHOST_QUEUE_ALL, true) != 0)
>  		DRV_LOG(NOTICE, "vDPA (%d): software relay is used.", did);
>  
>  	return 0;
> diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.c b/drivers/vdpa/mlx5/mlx5_vdpa.c
> index 9e758b6..8ea1300 100644
> --- a/drivers/vdpa/mlx5/mlx5_vdpa.c
> +++ b/drivers/vdpa/mlx5/mlx5_vdpa.c
> @@ -147,7 +147,8 @@
>  	int ret;
>  
>  	if (priv->direct_notifier) {
> -		ret = rte_vhost_host_notifier_ctrl(priv->vid, false);
> +		ret = rte_vhost_host_notifier_ctrl(priv->vid, VHOST_QUEUE_ALL,
> +						   false);
>  		if (ret != 0) {
>  			DRV_LOG(INFO, "Direct HW notifier FD cannot be "
>  				"destroyed for device %d: %d.", priv->vid, ret);
> @@ -155,7 +156,7 @@
>  		}
>  		priv->direct_notifier = 0;
>  	}
> -	ret = rte_vhost_host_notifier_ctrl(priv->vid, true);
> +	ret = rte_vhost_host_notifier_ctrl(priv->vid, VHOST_QUEUE_ALL, true);
>  	if (ret != 0)
>  		DRV_LOG(INFO, "Direct HW notifier FD cannot be configured for"
>  			" device %d: %d.", priv->vid, ret);
> diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h
> index ecb3d91..2db536c 100644
> --- a/lib/librte_vhost/rte_vdpa.h
> +++ b/lib/librte_vhost/rte_vdpa.h
> @@ -202,22 +202,26 @@ struct rte_vdpa_device *
>  int
>  rte_vdpa_get_device_num(void);
>  
> +#define VHOST_QUEUE_ALL VHOST_MAX_VRING
> +
>  /**
>   * @warning
>   * @b EXPERIMENTAL: this API may change without prior notice
>   *
> - * Enable/Disable host notifier mapping for a vdpa port.
> + * Enable/Disable host notifier mapping for a vdpa queue.
>   *
>   * @param vid
>   *  vhost device id
>   * @param enable
>   *  true for host notifier map, false for host notifier unmap
> + * @param qid
> + *  vhost queue id, VHOST_QUEUE_ALL to configure all the device queues
I would prefer two APIs that passing a special ID that means all queues:

rte_vhost_host_notifier_ctrl(int vid, uint16_t qid, bool enable);
rte_vhost_host_notifier_ctrl_all(int vid, bool enable);

I think it is clearer for the user of the API.
Or if you think an extra API is overkill, just let the driver loop on
all the queues.

>   * @return
>   *  0 on success, -1 on failure
>   */
>  __rte_experimental
>  int
> -rte_vhost_host_notifier_ctrl(int vid, bool enable);
> +rte_vhost_host_notifier_ctrl(int vid, uint16_t qid, bool enable);
>  
>  /**


  reply	other threads:[~2020-06-19  6:45 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-18 16:28 [dpdk-dev] [PATCH v1 0/4] vhost: improve ready state Matan Azrad
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 1/4] vhost: support host notifier queue configuration Matan Azrad
2020-06-19  6:44   ` Maxime Coquelin [this message]
2020-06-19 13:28     ` Matan Azrad
2020-06-19 14:01       ` Maxime Coquelin
2020-06-21  6:26         ` Matan Azrad
2020-06-22  8:06           ` Maxime Coquelin
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 2/4] vhost: skip access lock when vDPA is configured Matan Azrad
2020-06-19  6:49   ` Maxime Coquelin
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 3/4] vhost: improve device ready definition Matan Azrad
2020-06-19  7:41   ` Maxime Coquelin
2020-06-19 12:04     ` Maxime Coquelin
2020-06-19 13:11     ` Matan Azrad
2020-06-19 13:54       ` Maxime Coquelin
2020-06-21  6:20         ` Matan Azrad
2020-06-22  8:04           ` Maxime Coquelin
2020-06-22  8:41             ` Matan Azrad
2020-06-22  8:56               ` Maxime Coquelin
2020-06-22 10:06                 ` Matan Azrad
2020-06-22 12:32                   ` Maxime Coquelin
2020-06-22 13:43                     ` Matan Azrad
2020-06-22 14:55                       ` Maxime Coquelin
2020-06-22 15:51                         ` Matan Azrad
2020-06-22 16:47                           ` Maxime Coquelin
2020-06-23  9:02                             ` Matan Azrad
2020-06-23  9:19                               ` Maxime Coquelin
2020-06-23 11:53                                 ` Matan Azrad
2020-06-23 13:55                                   ` Maxime Coquelin
2020-06-23 14:33                                     ` Maxime Coquelin
2020-06-23 14:52                                     ` Matan Azrad
2020-06-23 15:18                                       ` Maxime Coquelin
2020-06-24  5:54                                         ` Matan Azrad
2020-06-24  7:22                                           ` Maxime Coquelin
2020-06-24  8:38                                             ` Matan Azrad
2020-06-24  9:12                                               ` Maxime Coquelin
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 4/4] vdpa/mlx5: support queue update Matan Azrad
2020-06-25 13:38 ` [dpdk-dev] [PATCH v2 0/5] vhost: improve ready state Matan Azrad
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 1/5] vhost: skip access lock when vDPA is configured Matan Azrad
2020-06-28  3:06     ` Xia, Chenbo
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 2/5] vhost: improve device readiness notifications Matan Azrad
2020-06-26 12:10     ` Maxime Coquelin
2020-06-28  3:08     ` Xia, Chenbo
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 3/5] vhost: handle memory hotplug with vDPA devices Matan Azrad
2020-06-26 12:15     ` Maxime Coquelin
2020-06-28  3:18     ` Xia, Chenbo
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 4/5] vhost: notify virtq file descriptor update Matan Azrad
2020-06-26 12:19     ` Maxime Coquelin
2020-06-28  3:19     ` Xia, Chenbo
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 5/5] vdpa/mlx5: support queue update Matan Azrad
2020-06-26 12:29     ` Maxime Coquelin
2020-06-29 14:08   ` [dpdk-dev] [PATCH v3 0/6] vhost: improve ready state Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 1/6] vhost: support host notifier queue configuration Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 2/6] vhost: skip access lock when vDPA is configured Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 3/6] vhost: improve device readiness notifications Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 4/6] vhost: handle memory hotplug with vDPA devices Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 5/6] vhost: notify virtq file descriptor update Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 6/6] vdpa/mlx5: support queue update Matan Azrad
2020-06-29 17:24     ` [dpdk-dev] [PATCH v3 0/6] vhost: improve ready state Maxime Coquelin
2020-07-17  1:41       ` Wang, Yinan

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