09/11/2026 12:26, Andrey Mokrushin: > Hi Morten, > > We hit the same issue while fuzzing lib/gro: with both > RTE_GRO_IPV4_VXLAN_TCP_IPV4 and RTE_GRO_IPV4_VXLAN_UDP_IPV4 enabled, > fragments of inner UDP in VXLAN match IS_IPV4_VXLAN_TCP4_PKT() > (RTE_PTYPE_INNER_L4_FRAG includes the RTE_PTYPE_INNER_L4_TCP bit), > are rejected by gro_vxlan_tcp4_reassemble(), and never reach the > VXLAN UDP path, so they are not merged. > > With two fragments of one inner UDP datagram, packet_type taken from > rte_net_get_ptype(), rte_gro_reassemble_burst() returns: > - without the patch: 2 with both VXLAN types, 1 with VXLAN UDP only; > - with the patch: 1 in both cases. > > Tested on 25.11.2 with a standalone program and our fuzzing corpus > for gro/gso, no regressions. > > Tested-by: Andrey Mokrushin <[email protected]>
Applied, thanks.
