[dpdk-dev] [RFC] lib/ethdev: add dev configured flag
Huisong Li
lihuisong at huawei.com
Mon May 31 10:51:46 CEST 2021
Hi, All & Ferruh
What do you think about this patch?
在 2021/5/8 16:00, Huisong Li 写道:
> Currently, if dev_configure is not invoked or fails to be invoked, users
> can still invoke dev_start successfully. This patch adds a "dev_configured"
> flag in "rte_eth_dev_data" to control whether dev_start can be invoked.
>
> Signed-off-by: Huisong Li <lihuisong at huawei.com>
> ---
> lib/ethdev/rte_ethdev.c | 11 +++++++++++
> lib/ethdev/rte_ethdev_core.h | 6 +++++-
> 2 files changed, 16 insertions(+), 1 deletion(-)
>
> diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
> index a187976..7d74b17 100644
> --- a/lib/ethdev/rte_ethdev.c
> +++ b/lib/ethdev/rte_ethdev.c
> @@ -1604,6 +1604,8 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
> }
>
> rte_ethdev_trace_configure(port_id, nb_rx_q, nb_tx_q, dev_conf, 0);
> + dev->data->dev_configured = 1;
> +
> return 0;
> reset_queues:
> eth_dev_rx_queue_config(dev, 0);
> @@ -1614,6 +1616,8 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
> dev->data->mtu = old_mtu;
>
> rte_ethdev_trace_configure(port_id, nb_rx_q, nb_tx_q, dev_conf, ret);
> + dev->data->dev_configured = 0;
> +
> return ret;
> }
>
> @@ -1749,6 +1753,13 @@ rte_eth_dev_start(uint16_t port_id)
>
> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
>
> + if (dev->data->dev_configured == 0) {
> + RTE_ETHDEV_LOG(INFO,
> + "Device with port_id=%"PRIu16" is not configured.\n",
> + port_id);
> + return -EINVAL;
> + }
> +
> if (dev->data->dev_started != 0) {
> RTE_ETHDEV_LOG(INFO,
> "Device with port_id=%"PRIu16" already started\n",
> diff --git a/lib/ethdev/rte_ethdev_core.h b/lib/ethdev/rte_ethdev_core.h
> index 4679d94..b508769 100644
> --- a/lib/ethdev/rte_ethdev_core.h
> +++ b/lib/ethdev/rte_ethdev_core.h
> @@ -167,7 +167,11 @@ struct rte_eth_dev_data {
> scattered_rx : 1, /**< RX of scattered packets is ON(1) / OFF(0) */
> all_multicast : 1, /**< RX all multicast mode ON(1) / OFF(0). */
> dev_started : 1, /**< Device state: STARTED(1) / STOPPED(0). */
> - lro : 1; /**< RX LRO is ON(1) / OFF(0) */
> + lro : 1, /**< RX LRO is ON(1) / OFF(0) */
> + dev_configured : 1;
> + /**< Device configuration state:
> + * CONFIGURED(1) / NOT CONFIGURED(0).
> + */
> uint8_t rx_queue_state[RTE_MAX_QUEUES_PER_PORT];
> /**< Queues state: HAIRPIN(2) / STARTED(1) / STOPPED(0). */
> uint8_t tx_queue_state[RTE_MAX_QUEUES_PER_PORT];
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