[PATCH 6/7] net/ice: fix stale profile after L2TPv2 subtype change

[Burakov, Anatoly]

On 4/27/2026 4:31 AM, Shaiq Wani wrote:
> After a rule is destroyed, the HW profile for that ptype persists.
> If a new rule with the same ptype but a different L2TPv2 subtype is
> created (e.g. data then data_l), the old profile is reused via -EEXIST
> with stale field extraction offsets.  Since data and data_l have
> session_id at different byte offsets, the NIC matches on the wrong
> field and packets with mismatched session_id incorrectly hit the rule.
> 
> Remove the HW profile in ice_fdir_destroy_filter when the last
> filter for a given ptype is destroyed so the next rule creates a fresh
> profile with the correct offsets.
> 
> Fixes: 733640dae75e ("net/ice: support L2TPv2 flow pattern matching")
> Signed-off-by: Shaiq Wani <shaiq.wani at intel.com>
> ---

Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>

-- 
Thanks,
Anatoly