Re: [dpdk-dev] [PATCH] ethdev: check if queue setupped in queue-related APIs

["Wei Hu (Xavier)" <huwei013@chinasoftinc.com>]

Hi, Kalesh Anakkur Purayil

On 2020/10/11 0:38, Kalesh Anakkur Purayil wrote:
>
>
> On Sat, Oct 10, 2020 at 12:42 PM Wei Hu (Xavier) 
> <huwei013@chinasoftinc.com <mailto:huwei013@chinasoftinc.com>> wrote:
>
>     From: Chengchang Tang <tangchengchang@huawei.com
>     <mailto:tangchengchang@huawei.com>>
>
>     This patch adds checking whether the related Tx or Rx queue has been
>     setupped in the queue-related API functions to avoid illegal address
>     access. And validity check of the queue_id is also added in the API
>     functions rte_eth_dev_rx_intr_enable and rte_eth_dev_rx_intr_disable.
>
>     Signed-off-by: Chengchang Tang <tangchengchang@huawei.com
>     <mailto:tangchengchang@huawei.com>>
>     Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com
>     <mailto:xavier.huwei@huawei.com>>
>     Signed-off-by: Chengwen Feng <fengchengwen@huawei.com
>     <mailto:fengchengwen@huawei.com>>
>     ---
>      lib/librte_ethdev/rte_ethdev.c | 56
>     ++++++++++++++++++++++++++++++++++++++++++
>      lib/librte_ethdev/rte_ethdev.h |  3 ++-
>      2 files changed, 58 insertions(+), 1 deletion(-)
>
>     diff --git a/lib/librte_ethdev/rte_ethdev.c
>     b/lib/librte_ethdev/rte_ethdev.c
>     index 892c246..31a8eb3 100644
>     --- a/lib/librte_ethdev/rte_ethdev.c
>     +++ b/lib/librte_ethdev/rte_ethdev.c
>     @@ -897,6 +897,13 @@ rte_eth_dev_rx_queue_start(uint16_t port_id,
>     uint16_t rx_queue_id)
>                     return -EINVAL;
>             }
>
>     +       if (dev->data->rx_queues[rx_queue_id] == NULL) {
>     +               RTE_ETHDEV_LOG(ERR, "Rx queue %"PRIu16" of device
>     with port_id=%"
>     +                                   PRIu16" has not been setupped\n",
>     +                                   rx_queue_id, port_id);
>     +               return -EINVAL;
>     +       }
>     +
>
>
> Hi Xavier,
>
> How about having two common functions which validate RXQ/TXQ ids and 
> whether it has been set up or not like below. This helps avoiding lot 
> of duplicate code:
>
> static inline int
> rte_eth_dev_validate_rx_queue(uint16_t port_id, uint16_t rx_queue_id)
> {
>         struct rte_eth_dev *dev;
>
>         RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
>
>         dev = &rte_eth_devices[port_id];
>
>         if (rx_queue_id >= dev->data->nb_rx_queues) {
>                 RTE_ETHDEV_LOG(ERR, "Invalid RX queue_id=%u\n", 
> rx_queue_id);
>                 return -EINVAL;
>         }
>
>        if (dev->data->rx_queues[rx_queue_id] == NULL) {
>                RTE_ETHDEV_LOG(ERR,
>                               "Queue %u of device with port_id=%u has 
> not been setup\n",
>                               rx_queue_id, port_id);
>                return -EINVAL;
>        }
>
>        return 0;
> }
>
I fixed it in V2.

Thanks, xavier

> Regards,
> Kalesh
>
>     -- 
>     2.9.5
>
>
>
> -- 
> Regards,
> Kalesh A P