From: "Singh, Aman Deep" <aman.deep.singh@intel.com>
To: Spike Du <spiked@nvidia.com>, <matan@nvidia.com>,
<viacheslavo@nvidia.com>, <orika@nvidia.com>,
<thomas@monjalon.net>
Cc: <dev@dpdk.org>, <rasland@nvidia.com>
Subject: Re: [PATCH] app/testpmd: fix testpmd crash when quit with mlx5 avail_thresh enabled
Date: Thu, 27 Oct 2022 14:34:46 +0530 [thread overview]
Message-ID: <26267ebd-c355-343e-53d1-71bfcacaaa48@intel.com> (raw)
In-Reply-To: <20221024031403.1572010-1-spiked@nvidia.com>
On 10/24/2022 8:44 AM, Spike Du wrote:
> When testpmd quit with mlx5 avail_thresh enabled, a rte timer handler
> delays to reconfigure rx queue to re-arm this event. However at the same
> time, testpmd is destroying rx queues.
> It's never a valid use case for mlx5 avail_thresh. Before testpmd quit,
> user should disable avail_thresh configuration to not handle the events.
> This is documented in mlx5 driver guide.
>
> To avoid the crash in such use case, check port status, if it is not
> RTE_PORT_STARTED, don't process the avail_thresh event.
>
> Fixes: 0edfc9b08316 ("app/testpmd: add Host Shaper command")
>
> Signed-off-by: Spike Du <spiked@nvidia.com>
Acked-by: Aman Singh<aman.deep.singh@intel.com>
> ---
> drivers/net/mlx5/mlx5_testpmd.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/net/mlx5/mlx5_testpmd.c b/drivers/net/mlx5/mlx5_testpmd.c
> index ed84583..1a9ec78 100644
> --- a/drivers/net/mlx5/mlx5_testpmd.c
> +++ b/drivers/net/mlx5/mlx5_testpmd.c
> @@ -25,6 +25,7 @@
>
> static uint8_t host_shaper_avail_thresh_triggered[RTE_MAX_ETHPORTS];
> #define SHAPER_DISABLE_DELAY_US 100000 /* 100ms */
> +extern struct rte_port *ports;
This might not be needed, as we have testpmd.h included.
>
> /**
> * Disable the host shaper and re-arm available descriptor threshold event.
> @@ -39,7 +40,15 @@
> uint16_t port_id = port_rxq_id & 0xffff;
> uint16_t qid = (port_rxq_id >> 16) & 0xffff;
> struct rte_eth_rxq_info qinfo;
> + struct rte_port *port;
>
> + port = &ports[port_id];
> + if (port->port_status != RTE_PORT_STARTED) {
> + printf("%s port_status(%d) is incorrect, stop avail_thresh "
> + "event processing.\n",
> + __func__, port->port_status);
> + return;
> + }
> printf("%s disable shaper\n", __func__);
> if (rte_eth_rx_queue_info_get(port_id, qid, &qinfo)) {
> printf("rx_queue_info_get returns error\n");
next prev parent reply other threads:[~2022-10-27 9:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-24 3:14 Spike Du
2022-10-27 9:04 ` Singh, Aman Deep [this message]
2022-11-02 11:44 ` [PATCH v2] mlx5/testpmd: fix crash on quit with avail thresh enabled Spike Du
2022-11-06 13:26 ` Matan Azrad
2022-11-06 15:42 ` Raslan Darawsheh
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