Re: [dpdk-dev] [PATCH] event/octeontx2: fix queue removal from Rx adapter

[Jerin Jacob <jerinjacobk@gmail.com>]

On Thu, Apr 16, 2020 at 6:54 PM Lukasz Bartosik <lbartosik@marvell.com> wrote:
>
> When eth port queue is removed from Rx adapter using
> rte_event_eth_rx_adapter_queue_del() it incorrectly
> initializes CQ context instead of modifying it. This
> might lead to a crash when CQ context is modified
> as a part of rte_eth_dev_stop() sequence as CQ will
> hold invalid entries. This is responsibility of an
> application to call rte_event_eth_rx_adapter_queue_del()
> to remove eth port queue from Rx adapter in tear down
> sequence.

Please add Fixes: tag and cc stable.

> Signed-off-by: Lukasz Bartosik <lbartosik@marvell.com>
> ---
>  drivers/event/octeontx2/otx2_evdev_adptr.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/event/octeontx2/otx2_evdev_adptr.c b/drivers/event/octeontx2/otx2_evdev_adptr.c
> index 233cba2..8bdcfa3 100644
> --- a/drivers/event/octeontx2/otx2_evdev_adptr.c
> +++ b/drivers/event/octeontx2/otx2_evdev_adptr.c
> @@ -133,7 +133,7 @@ sso_rxq_disable(struct otx2_eth_dev *dev, uint16_t qid)
>         aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox);
>         aq->qidx = qid;
>         aq->ctype = NIX_AQ_CTYPE_CQ;
> -       aq->op = NIX_AQ_INSTOP_INIT;
> +       aq->op = NIX_AQ_INSTOP_WRITE;
>
>         aq->cq.ena = 1;
>         aq->cq.caching = 1;
> @@ -144,7 +144,7 @@ sso_rxq_disable(struct otx2_eth_dev *dev, uint16_t qid)
>
>         rc = otx2_mbox_process(mbox);
>         if (rc < 0) {
> -               otx2_err("Failed to init cq context");
> +               otx2_err("Failed to enable cq context");
>                 goto fail;
>         }
>
> --
> 2.7.4
>