Re: [PATCH net-next 2/3] xsk: honor XDP_TX_METADATA in zero-copy path
From: Alexander Lobakin <aleksander.lobakin@intel.com>
Date: 2026-08-12 11:09:38
Also in:
bpf, intel-wired-lan, linux-rdma, lkml, netdev
From: Stanislav Fomichev <redacted> Date: Mon, 10 Aug 2026 11:47:52 -0700
The zero-copy path reads TX metadata whenever the UMEM has metadata space,
even if the descriptor does not set XDP_TX_METADATA. Pass descriptor
options through the metadata helpers and ignore metadata unless the option
is set.
This does not change the existing per-WQE metadata handling for mlx5
MPWQEs, where the descriptor that starts a session configures offload state
shared by the batch. Supporting mixed metadata states within one MPWQE
requires a separate fix.
Fixes: 48eb03dd2630 ("xsk: Add TX timestamp and TX checksum offload support")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>Reviwed-by: Alexander Lobakin [off-list ref] Thanks, Olek