From: Stephen Hemminger <stephen@networkplumber.org>
To: Sriram Yagnaraman <sriram.yagnaraman@ericsson.com>
Cc: <dev@dpdk.org>, <jgrajcia@cisco.com>, <ferruh.yigit@amd.com>,
<stable@dpdk.org>, <mattias.ronnblom@ericsson.com>,
<heng.wang@ericsson.com>, <ravi.kumar.chennaparapu@ericsson.com>
Subject: Re: [PATCH] net/memif: fix descriptor flags corruption in multi-segment TX
Date: Tue, 3 Mar 2026 08:13:46 -0800 [thread overview]
Message-ID: <20260303081346.1e6ceb05@phoenix.local> (raw)
In-Reply-To: <20260303110152.276344-1-sriram.yagnaraman@ericsson.com>
On Tue, 3 Mar 2026 12:01:52 +0100
Sriram Yagnaraman <sriram.yagnaraman@ericsson.com> wrote:
> The memif TX path was using |= to set descriptor flags, which could
> leave stale flag bits from previous ring iterations. This caused
> descriptor corruption when the ring wrapped around, leading to
> malformed packet chains and RX failures.
>
> Initialize d0->flags to 0 before setting MEMIF_DESC_FLAG_NEXT to
> ensure clean descriptor state on each transmission.
>
> Fixes: 43b815d88188 ("net/memif: support zero-copy slave")
> Cc: stable@dpdk.org
>
> Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@ericsson.com>
> ---
Applied to next-net
next prev parent reply other threads:[~2026-03-03 16:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-03 11:01 [PATCH] net/memif: fix descriptor flags corruption in multi-segment TX Sriram Yagnaraman
2026-03-03 16:13 ` Stephen Hemminger [this message]
2026-03-16 16:08 ` Stephen Hemminger
2026-03-16 20:08 ` Sriram Yagnaraman
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