[PATCH 0/7] net/ice: L2TPv2 flow rule fixes

[Bruce Richardson]

On Mon, Apr 27, 2026 at 08:01:08AM +0530, Shaiq Wani wrote:
> The original L2TPv2 flow support (733640dae75e) mapped every PPP tunnel
> variant to a single generic PTYPE and programmed both segments with
> identical headers. This caused several interrelated problems:
> cross-protocol matches, silent inner-field drops, rule deletion
> failures, and unintended side-effects on GTP-U flows.
> 
> This series addresses each issue:
> 
>   1/7  Use the 30 granular HW PTYPEs (396-425) defined by the DDP
>        package instead of the generic ICE_MAC_IPV4_L2TPV2, and
>        extend the training-packet switch to cover the new flow types.
> 
>   2/7  Add the 8 missing tunnel inset-to-flow-field mappings so
>        inner IP/L4 fields are no longer silently dropped during
>        field parsing.
> 
>   3/7  Pass a segment index to ice_fdir_input_set_hdrs() and expand
>        each L2TPv2/PPP ptype into its own case with distinct outer
>        and inner header sets. Also always program inner-segment
>        headers for tunnel profiles, even when no inner fields are
>        extracted, so ptype-only narrowing works.
> 
>   4/7  Fix deletion of bare L2TPv2 rules (no PPP) by switching to a
>        single-segment profile, and normalize the L2TPv2 flags in the
>        SW hash key to prevent lookup mismatches.
> 
>   5/7  Stop L2TPv2 tunnel detection from overwriting the GTP-U
>        tunnel profile, which caused GTP-U flow rules to fail.
> 
>   6/7  Invalidate stale HW profiles when the L2TPv2 subtype changes
>        between rule creations.
> 
>   7/7  Pin the outer Ethertype (0x0800 / 0x86DD) in L2TPv2 rules
>        so IPv4 and IPv6 flows are not cross-matched.
> 
> Shaiq Wani (7):
>   net/ice: use granular PTYPEs for L2TPv2 PPP
>   net/ice: add tunnel inset bits to flow input set map
>   net/ice: fix L2TPv2 inner segment header setup
>   net/ice: fix bare L2TPv2 flow rule deletion
>   net/ice: fix GTP-U failure due to wrong tunnel profile
>   net/ice: fix stale profile after L2TPv2 subtype change
>   net/ice: pin outer Ethertype for L2TPv2 flow rules
> 
Series applied to dpdk-next-net-intel.
Thanks,
/Bruce