From: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
To: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: Jerin Jacob <jerinj@marvell.com>,
Konstantin Ananyev <konstantin.ananyev@huawei.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: RE: [EXTERNAL] [PATCH] examples/l3fwd: fix Rx over not ready port
Date: Fri, 1 Mar 2024 16:49:21 +0000 [thread overview]
Message-ID: <PH0PR18MB408639AA06A26D8B58CA9A7ADE5E2@PH0PR18MB4086.namprd18.prod.outlook.com> (raw)
In-Reply-To: <20240301163931.107036-1-konstantin.v.ananyev@yandex.ru>
> -----Original Message-----
> From: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
> Sent: Friday, March 1, 2024 10:10 PM
> To: dev@dpdk.org
> Cc: Jerin Jacob <jerinj@marvell.com>; Pavan Nikhilesh Bhagavatula
> <pbhagavatula@marvell.com>; Konstantin Ananyev
> <konstantin.ananyev@huawei.com>; stable@dpdk.org
> Subject: [EXTERNAL] [PATCH] examples/l3fwd: fix Rx over not ready port
>
> Prioritize security for external emails: Confirm sender and content safety
> before clicking links or opening attachments
>
> ----------------------------------------------------------------------
> From: Konstantin Ananyev <konstantin.ananyev@huawei.com>
>
> Running l3fwd in event mode with SW eventdev, service cores
> can start RX before main thread is finished with PMD installation.
> to reproduce:
> ./dpdk-l3fwd --lcores=49,51 -n 6 -a ca:00.0 -s 0x8000000000000 \
> --vdev event_sw0 -- \
> -L -P -p 1 --mode eventdev --eventq-sched=ordered \
> --rule_ipv4=test/l3fwd_lpm_v4_u1.cfg --rule_ipv6=test/l3fwd_lpm_v6_u1.cfg
> \
> --no-numa
>
> At init stage user will most likely see the error message like that:
> ETHDEV: lcore 51 called rx_pkt_burst for not ready port 0
> 0: ./dpdk-l3fwd (rte_dump_stack+0x1f) [15de723]
> ...
> 9: ./dpdk-l3fwd (eal_thread_loop+0x5a2) [15c1324]
> ...
>
> And then all depends how luck/unlucky you are.
> If there are some actual packet in HW RX queue, then the app will most
> likely crash, otherwise it might survive.
> As error message suggests, the problem is that services are started
> before main thread finished with NIC setup and initialization.
> The suggested fix moves services startup after NIC setup phase.
>
> Bugzilla ID: 1390
> Fixes: 8bd537e9c6cf ("examples/l3fwd: add service core setup based on
> caps")
> Cc: stable@dpdk.org
>
> Signed-off-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
> Signed-off-by: Konstantin Ananyev <konstantin.ananyev@huawei.com>
> ---
> examples/l3fwd/main.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
> index 3bf28aec0c..d4fb5d1971 100644
> --- a/examples/l3fwd/main.c
> +++ b/examples/l3fwd/main.c
> @@ -1577,7 +1577,6 @@ main(int argc, char **argv)
> l3fwd_lkp.main_loop = evt_rsrc->ops.fib_event_loop;
> else
> l3fwd_lkp.main_loop = evt_rsrc-
> >ops.lpm_event_loop;
> - l3fwd_event_service_setup();
> } else
> #endif
> l3fwd_poll_resource_setup();
> @@ -1609,6 +1608,11 @@ main(int argc, char **argv)
> }
> }
>
> +#ifdef RTE_LIB_EVENTDEV
Is the ifdef required?
> + if (evt_rsrc->enabled)
> + l3fwd_event_service_setup();
> +#endif
> +
> printf("\n");
>
> for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
> --
> 2.35.3
next prev parent reply other threads:[~2024-03-01 16:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-01 16:39 Konstantin Ananyev
2024-03-01 16:49 ` Pavan Nikhilesh Bhagavatula [this message]
2024-03-01 17:12 ` [EXTERNAL] " Konstantin Ananyev
2024-03-01 17:17 ` Pavan Nikhilesh Bhagavatula
2024-03-04 10:13 ` Konstantin Ananyev
2024-03-07 8:43 ` Thomas Monjalon
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