From: "naamax.meir" <naamax.meir@linux.intel.com>
To: Florian Kauer <florian.kauer@linutronix.de>,
Jesse Brandeburg <jesse.brandeburg@intel.com>,
Tony Nguyen <anthony.l.nguyen@intel.com>,
Vinicius Costa Gomes <vinicius.gomes@intel.com>,
"David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Tan Tee Min <tee.min.tan@linux.intel.com>,
Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>,
Aravindhan Gunasekaran <aravindhan.gunasekaran@intel.com>,
Malli C <mallikarjuna.chilakala@intel.com>
Cc: netdev@vger.kernel.org, kurt@linutronix.de,
intel-wired-lan@lists.osuosl.org, linux-kernel@vger.kernel.org
Subject: Re: [Intel-wired-lan] [PATCH net v2 5/6] igc: Fix launchtime before start of cycle
Date: Wed, 5 Jul 2023 14:06:37 +0300 [thread overview]
Message-ID: <c1514314-cfdf-65d1-986f-de360b4ee719@linux.intel.com> (raw)
In-Reply-To: <20230619100858.116286-6-florian.kauer@linutronix.de>
On 6/19/2023 13:08, Florian Kauer wrote:
> It is possible (verified on a running system) that frames are processed
> by igc_tx_launchtime with a txtime before the start of the cycle
> (baset_est).
>
> However, the result of txtime - baset_est is written into a u32,
> leading to a wrap around to a positive number. The following
> launchtime > 0 check will only branch to executing launchtime = 0
> if launchtime is already 0.
>
> Fix it by using a s32 before checking launchtime > 0.
>
> Fixes: db0b124f02ba ("igc: Enhance Qbv scheduling by using first flag bit")
> Signed-off-by: Florian Kauer <florian.kauer@linutronix.de>
> Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
> ---
> drivers/net/ethernet/intel/igc/igc_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
next prev parent reply other threads:[~2023-07-05 11:06 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-19 10:08 [PATCH net v2 0/6] igc: Fix corner cases for TSN offload Florian Kauer
2023-06-19 10:08 ` [PATCH net v2 1/6] igc: Rename qbv_enable to taprio_offload_enable Florian Kauer
2023-07-02 13:42 ` [Intel-wired-lan] " naamax.meir
2023-07-02 16:55 ` Markus Elfring
2023-07-02 19:17 ` Florian Kauer
2023-06-19 10:08 ` [PATCH net v2 2/6] igc: Do not enable taprio offload for invalid arguments Florian Kauer
2023-07-03 8:34 ` [Intel-wired-lan] " naamax.meir
2023-06-19 10:08 ` [PATCH net v2 3/6] igc: Handle already enabled taprio offload for basetime 0 Florian Kauer
2023-07-04 5:28 ` [Intel-wired-lan] " naamax.meir
2023-06-19 10:08 ` [PATCH net v2 4/6] igc: No strict mode in pure launchtime/CBS offload Florian Kauer
2023-07-04 9:34 ` [Intel-wired-lan] " naamax.meir
2023-07-04 9:39 ` Paul Menzel
2023-06-19 10:08 ` [PATCH net v2 5/6] igc: Fix launchtime before start of cycle Florian Kauer
2023-07-05 11:06 ` naamax.meir [this message]
2023-06-19 10:08 ` [PATCH net v2 6/6] igc: Fix inserting of empty frame for launchtime Florian Kauer
2023-07-02 17:24 ` Markus Elfring
2023-07-06 11:36 ` [Intel-wired-lan] " naamax.meir
2023-06-20 22:57 ` [PATCH net v2 0/6] igc: Fix corner cases for TSN offload Vinicius Costa Gomes
2023-06-21 0:17 ` Zulkifli, Muhammad Husaini
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