[dpdk-dev,v7,1/5] ethdev: support runtime queue setup
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Commit Message
It's not possible to setup a queue when the port is started
because of a check in ethdev layer. New capability flags are
added in order to relax this check for devices which support
queue setup in runtime. The functions rte_eth_[rx|tx]_queue_setup
will raise an error only if the port is started and runtime setup
of queue is not supported.
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
v7:
- update default.init
- rename runtime_queue_setup_capa to dev_capa for generic.
- fix typo.
v6:
- fix tx queue state check in rte_eth_tx_queue_setup
doc/guides/nics/features.rst | 18 ++++++++++++++++++
doc/guides/nics/features/default.ini | 2 ++
lib/librte_ether/rte_ethdev.c | 30 ++++++++++++++++++------------
lib/librte_ether/rte_ethdev.h | 7 +++++++
4 files changed, 45 insertions(+), 12 deletions(-)
Comments
On 4/22/2018 12:58 PM, Qi Zhang wrote:
> It's not possible to setup a queue when the port is started
> because of a check in ethdev layer. New capability flags are
> added in order to relax this check for devices which support
> queue setup in runtime. The functions rte_eth_[rx|tx]_queue_setup
> will raise an error only if the port is started and runtime setup
> of queue is not supported.
>
> Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> ---
>
> v7:
> - update default.init
> - rename runtime_queue_setup_capa to dev_capa for generic.
> - fix typo.
>
> v6:
> - fix tx queue state check in rte_eth_tx_queue_setup
>
>
> doc/guides/nics/features.rst | 18 ++++++++++++++++++
> doc/guides/nics/features/default.ini | 2 ++
> lib/librte_ether/rte_ethdev.c | 30 ++++++++++++++++++------------
> lib/librte_ether/rte_ethdev.h | 7 +++++++
> 4 files changed, 45 insertions(+), 12 deletions(-)
>
> diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
> index 1b4fb979f..67d459f80 100644
> --- a/doc/guides/nics/features.rst
> +++ b/doc/guides/nics/features.rst
> @@ -892,7 +892,25 @@ Documentation describes performance values.
>
> See ``dpdk.org/doc/perf/*``.
>
> +.. _nic_features_runtime_rx_queue_setup:
>
> +Runtime Rx queue setup
> +----------------------
> +
> +Supports Rx queue setup after device started.
> +
> +* **[provides] rte_eth_dev_info**: ``dev_capa:DEV_CAPA_RUNTIME_RX_QUEUE_SETUP``.
> +* **[related] API**: ``rte_eth_dev_info_get()``.
> +
> +.. _nic_features_runtime_tx_queue_setup:
> +
> +Runtime Tx queue setup
> +----------------------
> +
> +Supports Tx queue setup after device started.
> +
> +* **[provides] rte_eth_dev_info**: ``dev_capa:DEV_CAPA_RUNTIME_TX_QUEUE_SETUP``.
> +* **[related] API**: ``rte_eth_dev_info_get()``.
>
> .. _nic_features_other:
>
> diff --git a/doc/guides/nics/features/default.ini b/doc/guides/nics/features/default.ini
> index dae2ad776..dae80d52f 100644
> --- a/doc/guides/nics/features/default.ini
> +++ b/doc/guides/nics/features/default.ini
> @@ -78,3 +78,5 @@ x86-64 =
> Usage doc =
> Design doc =
> Perf doc =
> +Runtime Rx queue setup =
> +Runtime Tx queue setup =
The order of this file is the display order, can you please move these two new
features somewhere close to queue or configuration related features?
@@ -892,7 +892,25 @@ Documentation describes performance values.
See ``dpdk.org/doc/perf/*``.
+.. _nic_features_runtime_rx_queue_setup:
+Runtime Rx queue setup
+----------------------
+
+Supports Rx queue setup after device started.
+
+* **[provides] rte_eth_dev_info**: ``dev_capa:DEV_CAPA_RUNTIME_RX_QUEUE_SETUP``.
+* **[related] API**: ``rte_eth_dev_info_get()``.
+
+.. _nic_features_runtime_tx_queue_setup:
+
+Runtime Tx queue setup
+----------------------
+
+Supports Tx queue setup after device started.
+
+* **[provides] rte_eth_dev_info**: ``dev_capa:DEV_CAPA_RUNTIME_TX_QUEUE_SETUP``.
+* **[related] API**: ``rte_eth_dev_info_get()``.
.. _nic_features_other:
@@ -78,3 +78,5 @@ x86-64 =
Usage doc =
Design doc =
Perf doc =
+Runtime Rx queue setup =
+Runtime Tx queue setup =
@@ -1413,12 +1413,6 @@ rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
return -EINVAL;
}
- if (dev->data->dev_started) {
- RTE_PMD_DEBUG_TRACE(
- "port %d must be stopped to allow configuration\n", port_id);
- return -EBUSY;
- }
-
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_setup, -ENOTSUP);
@@ -1470,6 +1464,15 @@ rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
return -EINVAL;
}
+ if (dev->data->dev_started &&
+ !(dev_info.dev_capa &
+ DEV_CAPA_RUNTIME_RX_QUEUE_SETUP))
+ return -EBUSY;
+
+ if (dev->data->rx_queue_state[rx_queue_id] !=
+ RTE_ETH_QUEUE_STATE_STOPPED)
+ return -EBUSY;
+
rxq = dev->data->rx_queues;
if (rxq[rx_queue_id]) {
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_release,
@@ -1545,12 +1548,6 @@ rte_eth_tx_queue_setup(uint16_t port_id, uint16_t tx_queue_id,
return -EINVAL;
}
- if (dev->data->dev_started) {
- RTE_PMD_DEBUG_TRACE(
- "port %d must be stopped to allow configuration\n", port_id);
- return -EBUSY;
- }
-
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_queue_setup, -ENOTSUP);
@@ -1575,6 +1572,15 @@ rte_eth_tx_queue_setup(uint16_t port_id, uint16_t tx_queue_id,
return -EINVAL;
}
+ if (dev->data->dev_started &&
+ !(dev_info.dev_capa &
+ DEV_CAPA_RUNTIME_TX_QUEUE_SETUP))
+ return -EBUSY;
+
+ if (dev->data->tx_queue_state[tx_queue_id] !=
+ RTE_ETH_QUEUE_STATE_STOPPED)
+ return -EBUSY;
+
txq = dev->data->tx_queues;
if (txq[tx_queue_id]) {
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_queue_release,
@@ -981,6 +981,11 @@ struct rte_eth_conf {
*/
#define DEV_TX_OFFLOAD_SECURITY 0x00020000
+#define DEV_CAPA_RUNTIME_RX_QUEUE_SETUP 0x00000001
+/**< Device supports Rx queue setup after device started*/
+#define DEV_CAPA_RUNTIME_TX_QUEUE_SETUP 0x00000002
+/**< Device supports Tx queue setup after device started*/
+
/*
* If new Tx offload capabilities are defined, they also must be
* mentioned in rte_tx_offload_names in rte_ethdev.c file.
@@ -1054,6 +1059,8 @@ struct rte_eth_dev_info {
struct rte_eth_dev_portconf default_rxportconf;
/** Tx parameter recommendations */
struct rte_eth_dev_portconf default_txportconf;
+ /** Generic device capabilities */
+ uint64_t dev_capa;
};
/**