[PATCH nf-next v3 0/6] net: netfilter: preliminary support for IPv4 over IPv6 and SIT flowtable offload

Introduce some preliminary changes needed to support flowtable offload
for IPv4 over IPv6 and SIT traffic.

---
Changes in v3:
- Rely on nf_inet_addr instead of using two pointers for the same
  address.
- Add specific IPPROTO_IPV6 and IPPROTO_IPIP cases in
  nf_flow_tunnel_ip6ip6_push() and nf_flow_tunnel_ip_push().
- Rebase on top of nf-next main branch
- Link to v2: https://lore.kernel.org/r/20260907-nf-flowtable-sw-accel-ip6ip-sit-preliminary-v2-0-7c6ac1750725@oss.qualcomm.com (local)

Changes in v2:
- Fix dir configuration in nf_flow_offload_check_mtu() to compute tunnel
  MTU overhead.
- Link to v1: https://lore.kernel.org/r/20260901-nf-flowtable-sw-accel-ip6ip-sit-preliminary-v1-0-72e49be8c31f@oss.qualcomm.com (local)

---
Lorenzo Bianconi (6):
      net: netfilter: nf_flow_table: recognize IPv4/IPv6 in tunnel proto matching
      net: netfilter: nf_flow_table: set inner protocol when popping tunnel header
      net: netfilter: nf_flow_table: populate tunnel tuple regardless of inner protocol
      net: netfilter: add encap_proto to flow_offload_tunnel
      net: netfilter: nf_flow_table: refactor MTU check for tunnel offload
      net: netfilter: nf_flow_table: unify tunnel push for IPv4 and IPv6

 include/linux/netdevice.h             |   1 +
 include/net/netfilter/nf_flow_table.h |   1 +
 net/ipv4/ipip.c                       |   1 +
 net/ipv6/ip6_tunnel.c                 |   1 +
 net/netfilter/nf_flow_table_ip.c      | 215 +++++++++++++++++++++-------------
 net/netfilter/nf_flow_table_path.c    |   2 +
 6 files changed, 141 insertions(+), 80 deletions(-)
---
base-commit: 87b80c2f6b05cad9f0ff9136709c62a0f59923e3
change-id: 20260901-nf-flowtable-sw-accel-ip6ip-sit-preliminary-5635fae03f3e

Best regards,
-- 
Lorenzo Bianconi [off-list ref]