I’m trying to use the Generic Flow API (rte_flow) to match IP packets based on their length (either L2, L3 or L4 lengths). There doesn’t seem to be an item type that explicitly matches based on length (RTE_FLOW_ITEM_TYPE_x). So I’ve tried using a mask with RTE_FLOW_ITEM_TYPE_IPV4 to match on the total_length field (and similar attempt to match on the UDP header dgram_len field) but the NIC I’m using (mlx5) returns an error (mask enables non supported bits). Am I out of luck, or maybe missing something? Thanks for any insights! I’ve tried, DPDK: 20.11.7 and 22.11.1
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