[dpdk-dev] [PATCH v4 3/7] ethdev: add structures and enum for hash filter control

[Helin Zhang <helin.zhang@intel.com>]

Structures and enum are added in rte_eth_ctrl.h to support hash
filter control.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
---
 lib/librte_ether/rte_eth_ctrl.h | 74 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/lib/librte_ether/rte_eth_ctrl.h b/lib/librte_ether/rte_eth_ctrl.h
index aaea075..10197fc 100644
--- a/lib/librte_ether/rte_eth_ctrl.h
+++ b/lib/librte_ether/rte_eth_ctrl.h
@@ -73,6 +73,80 @@ enum rte_filter_op {
 	RTE_ETH_FILTER_OP_MAX,
 };
 
+/**
+ * Hash filter information types.
+ */
+enum rte_eth_hash_filter_info_type {
+	RTE_ETH_HASH_FILTER_INFO_TYPE_UNKNOWN = 0,
+	RTE_ETH_HASH_FILTER_INFO_TYPE_SYM_HASH_ENA_PER_PCTYPE,
+	RTE_ETH_HASH_FILTER_INFO_TYPE_SYM_HASH_ENA_PER_PORT,
+	RTE_ETH_HASH_FILTER_INFO_TYPE_FILTER_SWAP,
+	RTE_ETH_HASH_FILTER_INFO_TYPE_HASH_FUNCTION,
+	RTE_ETH_HASH_FILTER_INFO_TYPE_MAX,
+};
+
+/**
+ * Hash function types.
+ */
+enum rte_eth_hash_function {
+	RTE_ETH_HASH_FUNCTION_UNKNOWN = 0,
+	RTE_ETH_HASH_FUNCTION_TOEPLITZ,
+	RTE_ETH_HASH_FUNCTION_SIMPLE_XOR,
+	RTE_ETH_HASH_FUNCTION_MAX,
+};
+
+/**
+ * A structure used to set or get symmetric hash enable information, to support
+ * 'RTE_ETH_FILTER_HASH', 'RTE_ETH_FILTER_OP_GET/RTE_ETH_FILTER_OP_SET', with
+ * information type 'RTE_ETH_HASH_FILTER_INFO_TYPE_SYM_HASH_ENA_PER_PCTYPE'.
+ */
+struct rte_eth_sym_hash_ena_info {
+	/**< packet classification type, defined in rte_ethdev.h */
+	uint8_t pctype;
+	uint8_t enable; /**< enable or disable flag */
+};
+
+/**
+ * A structure used to set or get filter swap information, to support
+ * 'RTE_ETH_FILTER_HASH', 'RTE_ETH_FILTER_OP_GET/RTE_ETH_FILTER_OP_SET',
+ * with information type 'RTE_ETH_HASH_FILTER_INFO_TYPE_FILTER_SWAP'.
+ */
+struct rte_eth_filter_swap_info {
+	/**< Packet classification type, defined in rte_ethdev.h */
+	uint8_t pctype;
+	/**< Offset of the 1st field of the 1st couple to be swapped. */
+	uint8_t off0_src0;
+	/**< Offset of the 2nd field of the 1st couple to be swapped. */
+	uint8_t off0_src1;
+	/**< Field length of the first couple. */
+	uint8_t len0;
+	/**< Offset of the 1st field of the 2nd couple to be swapped. */
+	uint8_t off1_src0;
+	/**< Offset of the 2nd field of the 2nd couple to be swapped. */
+	uint8_t off1_src1;
+	/**< Field length of the second couple. */
+	uint8_t len1;
+};
+
+/**
+ * A structure used to set or get hash filter information, to support filter
+ * type of 'RTE_ETH_FILTER_HASH' and its operations.
+ */
+struct rte_eth_hash_filter_info {
+	enum rte_eth_hash_filter_info_type info_type; /**< Information type. */
+	/**< Details of hash filter infomation */
+	union {
+		/* For RTE_ETH_HASH_FILTER_INFO_TYPE_SYM_HASH_ENA_PER_PCTYPE */
+		struct rte_eth_sym_hash_ena_info sym_hash_ena;
+		/* For RTE_ETH_HASH_FILTER_INFO_TYPE_FILTER_SWAP */
+		struct rte_eth_filter_swap_info filter_swap;
+		/* For RTE_ETH_HASH_FILTER_INFO_TYPE_SYM_HASH_ENA_PER_PORT */
+		uint8_t enable;
+		/* For RTE_ETH_HASH_FILTER_INFO_TYPE_HASH_FUNCTION */
+		enum rte_eth_hash_function hash_function;
+	} info;
+};
+
 #ifdef __cplusplus
 }
 #endif
-- 
1.8.1.4