[PATCH nf-next v2 0/6] Add IPv4 over IPv6 and SIT flowtable SW acceleration

[Lorenzo Bianconi]

Similar to IPIP and IP6I6 tunnels, introduce sw acceleration for IPv4 over
IPv6 and SIT tunnels in the netfilter flowtable infrastructure.

---
Changes in v2:
- Fix MTU check in nf_flow_offload_forward() and in
  nf_flow_offload_ipv6_forward()
- Add SIT sw acceleration support
- Link to v1: https://lore.kernel.org/r/20260505-b4-flowtable-sw-accel-ip6ip-v1-0-9ac39ccc9ea9@kernel.org

---
Lorenzo Bianconi (6):
      net: netfilter: Add ether_type to net_device_path_ctx
      net: netfilter: Add encap_proto to flow_offload_tunnel
      net: netfilter: Add IPv4 over IPv6 tunnel flowtable acceleration
      selftests: netfilter: nft_flowtable.sh: Add IPv4 over IPv6 flowtable selftest
      net: netfilter: Add SIT tunnel flowtable acceleration
      selftests: netfilter: nft_flowtable.sh: Add SIT flowtable selftest

 drivers/net/ethernet/airoha/airoha_ppe.c           |  14 +-
 drivers/net/ethernet/mediatek/mtk_ppe_offload.c    |  13 +-
 include/linux/netdevice.h                          |   5 +-
 include/net/netfilter/nf_flow_table.h              |   1 +
 net/core/dev.c                                     |   6 +-
 net/ipv4/ipip.c                                    |   1 +
 net/ipv6/ip6_tunnel.c                              |   6 +-
 net/ipv6/sit.c                                     |  26 ++
 net/netfilter/nf_flow_table_core.c                 |  14 +-
 net/netfilter/nf_flow_table_ip.c                   | 386 +++++++++++++--------
 net/netfilter/nf_flow_table_path.c                 |  16 +-
 tools/testing/selftests/net/netfilter/config       |   1 +
 .../selftests/net/netfilter/nft_flowtable.sh       |  78 ++++-
 13 files changed, 402 insertions(+), 165 deletions(-)
---
base-commit: c1e5127b577c6b88fa48e532616932ae978528d5
change-id: 20260505-b4-flowtable-sw-accel-ip6ip-7101034cd147

Best regards,
-- 
Lorenzo Bianconi <lorenzo at kernel.org>