From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Zhang Tengfei <zhtfdev@gmail.com>, <dev@dpdk.org>
Cc: <stable@dpdk.org>,
Vladimir Medvedkin <vladimir.medvedkin@intel.com>,
Bruce Richardson <bruce.richardson@intel.com>,
Dongdong Liu <liudongdong3@huawei.com>,
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Subject: Re: [PATCH v2] net/ixgbe: fix repeated Rx packet buffer shrink for FDIR
Date: Tue, 6 Oct 2026 11:23:06 +0200 [thread overview]
Message-ID: <9d10d4e1-c931-482a-b3ac-b8d2a2c37cd6@intel.com> (raw)
In-Reply-To: <20260927042545.45152-1-zhtfdev@gmail.com>
On 9/27/2026 6:25 AM, Zhang Tengfei wrote:
> Enabling Flow Director reduces RXPBSIZE(0) to reserve packet buffer
> memory for the filter table. The new size was computed from the current
> register value, and nothing restored it when FDIR state was reset. After
> the last FDIR rule was removed, or when the first rule failed after FDIR
> had been enabled, the next rule created enabled FDIR again and reduced
> the buffer a second time.
>
> Compute RXPBSIZE(0) from the default packet buffer size, and disable
> FDIR and restore the buffer when the last rule is removed, on flush, and
> on the enable error paths.
>
> Fixes: 301abd26b118 ("net/ixgbe: reset flow state on clear paths")
> Fixes: 5007ac13189d ("ethdev: remove deprecated Flow Director configuration")
> Cc: stable@dpdk.org
>
> Signed-off-by: Zhang Tengfei <zhtfdev@gmail.com>
> ---
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
--
Thanks,
Anatoly
next prev parent reply other threads:[~2026-10-06 9:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 13:58 [PATCH] net/ixgbe: fix repeated Rx packet buffer shrink for FDIR Zhang Tengfei
2026-09-18 13:50 ` Bruce Richardson
2026-09-25 9:47 ` Burakov, Anatoly
2026-09-25 10:05 ` Burakov, Anatoly
2026-09-25 18:59 ` Zhang Tengfei
2026-09-27 4:25 ` [PATCH v2] " Zhang Tengfei
2026-10-06 9:23 ` Burakov, Anatoly [this message]
2026-10-06 9:51 ` Bruce Richardson
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