netdev - [PATCH net-next 00/10] Call skb_metadata_set when skb->data points past metadata

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Message-Id: <20260110-skb-meta-fixup-skb_metadata_set-calls-v1-0-1047878ed1b0@cloudflare.com>
Date: Sat, 10 Jan 2026 22:05:14 +0100
From: Jakub Sitnicki <jakub@...udflare.com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
 Michael Chan <michael.chan@...adcom.com>, 
 Pavan Chebbi <pavan.chebbi@...adcom.com>, 
 Andrew Lunn <andrew+netdev@...n.ch>, 
 Tony Nguyen <anthony.l.nguyen@...el.com>, 
 Przemek Kitszel <przemyslaw.kitszel@...el.com>, 
 Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>, 
 Tariq Toukan <tariqt@...dia.com>, Mark Bloch <mbloch@...dia.com>, 
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
 Jesper Dangaard Brouer <hawk@...nel.org>, 
 John Fastabend <john.fastabend@...il.com>, 
 Stanislav Fomichev <sdf@...ichev.me>, intel-wired-lan@...ts.osuosl.org, 
 bpf@...r.kernel.org, kernel-team@...udflare.com
Subject: [PATCH net-next 00/10] Call skb_metadata_set when skb->data points
 past metadata

This series is split out of [1] following discussion with Jakub.

To copy XDP metadata into an skb extension when skb_metadata_set() is
called, we need to locate the metadata contents.

These patches establish a contract with the drivers: skb_metadata_set()
must be called only after skb->data has been advanced past the metadata
area.

[1] https://lore.kernel.org/r/20260107-skb-meta-safeproof-netdevs-rx-only-v3-0-0d461c5e4764@cloudflare.com

Signed-off-by: Jakub Sitnicki <jakub@...udflare.com>
---
Jakub Sitnicki (10):
      net: Document skb_metadata_set contract with the drivers
      bnxt_en: Call skb_metadata_set when skb->data points past metadata
      i40e: Call skb_metadata_set when skb->data points past metadata
      igb: Call skb_metadata_set when skb->data points past metadata
      igc: Call skb_metadata_set when skb->data points past metadata
      ixgbe: Call skb_metadata_set when skb->data points past metadata
      mlx5e: Call skb_metadata_set when skb->data points past metadata
      veth: Call skb_metadata_set when skb->data points past metadata
      xsk: Call skb_metadata_set when skb->data points past metadata
      xdp: Call skb_metadata_set when skb->data points past metadata

 drivers/net/ethernet/broadcom/bnxt/bnxt.c           | 2 +-
 drivers/net/ethernet/intel/i40e/i40e_xsk.c          | 2 +-
 drivers/net/ethernet/intel/igb/igb_xsk.c            | 2 +-
 drivers/net/ethernet/intel/igc/igc_main.c           | 4 ++--
 drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c        | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c | 2 +-
 drivers/net/veth.c                                  | 4 ++--
 include/linux/skbuff.h                              | 7 +++++++
 net/core/dev.c                                      | 5 ++++-
 net/core/xdp.c                                      | 2 +-
 10 files changed, 21 insertions(+), 11 deletions(-)