Re: [PATCH v2 1/2] ethdev: add new symmetric hash function

[lihuisong (C)]

Hi Xueming,

在 2023/8/27 16:17, Xueming Li 写道:
The new symmetric hash function swap src/dst L3 address and
L4 ports automatically by sorting.Signed-off-by: Xueming Li <xuemi...@nvidia.com>
---
  lib/ethdev/rte_flow.h | 7 +++++++
  1 file changed, 7 insertions(+)

diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index 2ebb76dbc0..4f4421ca50 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -3196,6 +3196,13 @@ enum rte_eth_hash_function {
         * src or dst address will xor with zero pair.
         */
        RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ,
+       /**
+        * Symmetric Toeplitz: L3 and L4 fields are sorted prior to
+        * the hash function.
+        *  If src_ip > dst_ip, swap src_ip and dst_ip.
+        *  If src_port > dst_port, swap src_port and dst_port.
+        */
If hash result are computed by the order: "src_ip+dst_ip+src_port+dst_port"
How to obtain the value of every L3 and L4 field obove?
I still cannot understand how to swap and set these values for these 
fields?
+       RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ_SORT,
        RTE_ETH_HASH_FUNCTION_MAX,
  };