In existing code the match on tagged/untagged packets is not explicit. Recent documentation update [1] describes the different patterns and clarifies the intended use of different patterns.
This patch proposes an update to ETH item struct, to clearly define the required characteristic of a packet, and enable precise match criteria. [1] http://mails.dpdk.org/archives/dev/2020-May/166257.html Signed-off-by: Dekel Peled <dek...@mellanox.com> --- lib/librte_ethdev/rte_flow.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h index cf0eccb..345feb5 100644 --- a/lib/librte_ethdev/rte_flow.h +++ b/lib/librte_ethdev/rte_flow.h @@ -726,11 +726,20 @@ struct rte_flow_item_raw { * If the @p ETH item is the only item in the pattern, and the @p type field * is not specified, then both tagged and untagged packets will match the * pattern. + * The fields @p cvlan_exist and @p svlan_exist can be used to match specific + * packet types, instead of using the @p type field. This can be used to match + * on packets that do/don't contain either cvlan, svlan, or both. + * The field @p num_of_vlans can be used to match packets by the exact number + * of VLANs in header. */ struct rte_flow_item_eth { struct rte_ether_addr dst; /**< Destination MAC. */ struct rte_ether_addr src; /**< Source MAC. */ rte_be16_t type; /**< EtherType or TPID. */ + uint32_t cvlan_exist:1; /**< C-tag VLAN exist in header. */ + uint32_t svlan_exist:1; /**< S-tag VLAN exist in header. */ + uint32_t reserved:14; /**< Reserved, must be zero. */ + uint32_t num_of_vlans:16; /**< Number of VLANs in header. */ }; /** Default mask for RTE_FLOW_ITEM_TYPE_ETH. */ -- 1.8.3.1
