On 10/1/19 12:22 PM, Simei Su wrote:
Currently, there are DEFAULT,TOEPLITZ and SIMPLE_XOR hash function.
To support symmetric hash by rte_flow RSS action, this patch adds
new hash function "Symmetric Toeplitz" which is supported by some hardware.
Signed-off-by: Simei Su <simei...@intel.com>
Reviewed-by: Qi Zhang <qi.z.zh...@intel.com>
Acked-by: Ori Kam <or...@mellanox.com>
Acked-by: Andrew Rybchenko <arybche...@solarflare.com>
---
lib/librte_ethdev/rte_flow.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index 354cb1d..ca4e868 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -1814,6 +1814,12 @@ enum rte_eth_hash_function {
RTE_ETH_HASH_FUNCTION_DEFAULT = 0,
RTE_ETH_HASH_FUNCTION_TOEPLITZ, /**< Toeplitz */
RTE_ETH_HASH_FUNCTION_SIMPLE_XOR, /**< Simple XOR */
+ /**
+ * Symmetric Toeplitz: src, dst will be replaced by
+ * xor(src, dst). For the case with src/dst only,
+ * src or dst address will xor with zero pair.
+ */
+ RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ,
RTE_ETH_HASH_FUNCTION_MAX,
};
It looks like symmetric does not make sense in the case of src/dst only.
The goal of symmetric function is to make it the same for both directions.
