[dpdk-dev] [Suspected-Phishing][PATCH] net/vhost: add an API for get queue status

[Noa Ezra]

Hi,
What do you say about this patch?

Thanks,
Noa.

> -----Original Message-----
> From: Noa Ezra [mailto:noae at mellanox.com]
> Sent: Wednesday, June 19, 2019 9:15 AM
> To: maxime.coquelin at redhat.com
> Cc: Matan Azrad <matan at mellanox.com>; dev at dpdk.org; Noa Ezra
> <noae at mellanox.com>
> Subject: [Suspected-Phishing][PATCH] net/vhost: add an API for get queue
> status
> 
> Add an API that returns queue status for requested queue in the port.
> The queue's status can be changed before the user has signed for the queue
> state event interrupt. In this case the user can't know the current queue's
> status. This API returns the current status.
> 
> Signed-off-by: Noa Ezra <noae at mellanox.com>
> Reviewed-by: Matan Azrad <matan at mellanox.com>
> ---
>  drivers/net/vhost/rte_eth_vhost.c           | 47
> +++++++++++++++++++++++++++++
>  drivers/net/vhost/rte_eth_vhost.h           | 18 +++++++++++
>  drivers/net/vhost/rte_pmd_vhost_version.map |  6 ++++
>  3 files changed, 71 insertions(+)
> 
> diff --git a/drivers/net/vhost/rte_eth_vhost.c
> b/drivers/net/vhost/rte_eth_vhost.c
> index 9a54020..cad1e5c 100644
> --- a/drivers/net/vhost/rte_eth_vhost.c
> +++ b/drivers/net/vhost/rte_eth_vhost.c
> @@ -855,6 +855,7 @@ struct vhost_xstats_name_off {
>  	/* won't be NULL */
>  	state = vring_states[eth_dev->data->port_id];
>  	rte_spinlock_lock(&state->lock);
> +
>  	state->cur[vring] = enable;
>  	state->max_vring = RTE_MAX(vring, state->max_vring);
>  	rte_spinlock_unlock(&state->lock);
> @@ -874,6 +875,52 @@ struct vhost_xstats_name_off {  };
> 
>  int
> +rte_eth_vhost_get_queue_status(uint16_t port_id, bool rx, uint16_t
> queue_id,
> +		bool *queue_status)
> +{
> +	struct rte_vhost_vring_state *state;
> +	struct internal_list *list;
> +	struct rte_eth_dev *eth_dev;
> +	int found = 0;
> +	uint16_t nb_q = 0;
> +
> +	if (port_id >= RTE_MAX_ETHPORTS) {
> +		VHOST_LOG(ERR, "Invalid port id\n");
> +		return -1;
> +	}
> +	TAILQ_FOREACH(list, &internal_list, next) {
> +		eth_dev = list->eth_dev;
> +		if (eth_dev->data->port_id == port_id) {
> +			nb_q = rx ? eth_dev->data->nb_rx_queues :
> +					eth_dev->data->nb_tx_queues;
> +			found = 1;
> +			break;
> +		}
> +	}
> +	if (!found) {
> +		VHOST_LOG(ERR, "No device found for port id %u\n",
> port_id);
> +		return -1;
> +	}
> +	if (queue_id >= nb_q) {
> +		VHOST_LOG(ERR, "Invalid queue id\n");
> +		return -1;
> +	}
> +
> +	state = vring_states[port_id];
> +	if (!state) {
> +		VHOST_LOG(ERR, "Unused port\n");
> +		return -1;
> +	}
> +
> +	rte_spinlock_lock(&state->lock);
> +	*queue_status = rx ? state->cur[queue_id * 2 + 1] :
> +			state->cur[queue_id * 2];
> +	rte_spinlock_unlock(&state->lock);
> +
> +	return 0;
> +}
> +
> +int
>  rte_eth_vhost_get_queue_event(uint16_t port_id,
>  		struct rte_eth_vhost_queue_event *event)  { diff --git
> a/drivers/net/vhost/rte_eth_vhost.h b/drivers/net/vhost/rte_eth_vhost.h
> index 0e68b9f..1e65c69 100644
> --- a/drivers/net/vhost/rte_eth_vhost.h
> +++ b/drivers/net/vhost/rte_eth_vhost.h
> @@ -44,6 +44,24 @@ int rte_eth_vhost_get_queue_event(uint16_t port_id,
>  		struct rte_eth_vhost_queue_event *event);
> 
>  /**
> + * Get queue status for specific queue in the port.
> + *
> + * @param[in] port_id
> + *  Port id.
> + * @param[in] rx
> + *  True is rx, False if tx
> + * @paran[in] queue_id
> + *  Queue_id
> + * @param[out] queue_status
> + *  Pointer to a boolean, True is enable, False if disable.
> + * @return
> + *  - On success, zero, queue_status is updated.
> + *  - On failure, a negative value, queue_status is not updated.
> + */
> +int rte_eth_vhost_get_queue_status(uint16_t port_id, bool rx, uint16_t
> queue_id,
> +		bool *queue_status);
> +
> +/**
>   * Get the 'vid' value associated with the specified port.
>   *
>   * @return
> diff --git a/drivers/net/vhost/rte_pmd_vhost_version.map
> b/drivers/net/vhost/rte_pmd_vhost_version.map
> index 695db85..1eabfd2 100644
> --- a/drivers/net/vhost/rte_pmd_vhost_version.map
> +++ b/drivers/net/vhost/rte_pmd_vhost_version.map
> @@ -11,3 +11,9 @@ DPDK_16.11 {
> 
>  	rte_eth_vhost_get_vid_from_port_id;
>  };
> +
> +DPDK_19.08 {
> +	global:
> +
> +	rte_eth_vhost_get_queue_status;
> +};
> --
> 1.8.3.1