[hash] add SAI_NATIVE_HASH_FIELD_IPV6_FLOW_LABEL to hash-field map for ECMP/LAG switch hash configuration (#3481)

* added SAI_NATIVE_HASH_FIELD_IPV6_FLOW_LABEL to the hash-field table

Why I did it
Need to support SAI_NATIVE_HASH_FIELD_IPV6_FLOW_LABEL parameters for hash calculation

How I verified it
Configure SAI_NATIVE_HASH_FIELD_IPV6_FLOW_LABEL via CLI, check /var/log/syslog

Author: ayurkiv-nvda

orchagent/switch/switch_capabilities.cpp

@@ -63,7 +63,8 @@ static const std::unordered_map<sai_native_hash_field_t, std::string> swHashHash
     { SAI_NATIVE_HASH_FIELD_INNER_DST_IP,      SWITCH_HASH_FIELD_INNER_DST_IP      },
     { SAI_NATIVE_HASH_FIELD_INNER_SRC_IP,      SWITCH_HASH_FIELD_INNER_SRC_IP      },
     { SAI_NATIVE_HASH_FIELD_INNER_L4_DST_PORT, SWITCH_HASH_FIELD_INNER_L4_DST_PORT },
-    { SAI_NATIVE_HASH_FIELD_INNER_L4_SRC_PORT, SWITCH_HASH_FIELD_INNER_L4_SRC_PORT }
+    { SAI_NATIVE_HASH_FIELD_INNER_L4_SRC_PORT, SWITCH_HASH_FIELD_INNER_L4_SRC_PORT },
+    { SAI_NATIVE_HASH_FIELD_IPV6_FLOW_LABEL,   SWITCH_HASH_FIELD_IPV6_FLOW_LABEL   }
 };
 
 static const std::unordered_map<sai_hash_algorithm_t, std::string> swHashAlgorithmMap =

orchagent/switch/switch_helper.cpp

@@ -38,7 +38,8 @@ static const std::unordered_map<std::string, sai_native_hash_field_t> swHashHash
     { SWITCH_HASH_FIELD_INNER_DST_IP,      SAI_NATIVE_HASH_FIELD_INNER_DST_IP      },
     { SWITCH_HASH_FIELD_INNER_SRC_IP,      SAI_NATIVE_HASH_FIELD_INNER_SRC_IP      },
     { SWITCH_HASH_FIELD_INNER_L4_DST_PORT, SAI_NATIVE_HASH_FIELD_INNER_L4_DST_PORT },
-    { SWITCH_HASH_FIELD_INNER_L4_SRC_PORT, SAI_NATIVE_HASH_FIELD_INNER_L4_SRC_PORT }
+    { SWITCH_HASH_FIELD_INNER_L4_SRC_PORT, SAI_NATIVE_HASH_FIELD_INNER_L4_SRC_PORT },
+    { SWITCH_HASH_FIELD_IPV6_FLOW_LABEL,   SAI_NATIVE_HASH_FIELD_IPV6_FLOW_LABEL   }
 };
 
 static const std::unordered_map<std::string, sai_hash_algorithm_t> swHashAlgorithmMap =

orchagent/switch/switch_schema.h

@@ -20,6 +20,7 @@
 #define SWITCH_HASH_FIELD_INNER_SRC_IP      "INNER_SRC_IP"
 #define SWITCH_HASH_FIELD_INNER_L4_DST_PORT "INNER_L4_DST_PORT"
 #define SWITCH_HASH_FIELD_INNER_L4_SRC_PORT "INNER_L4_SRC_PORT"
+#define SWITCH_HASH_FIELD_IPV6_FLOW_LABEL   "IPV6_FLOW_LABEL"
 
 #define SWITCH_HASH_ECMP_HASH "ecmp_hash"
 #define SWITCH_HASH_LAG_HASH  "lag_hash"

tests/test_hash.py

@@ -14,7 +14,8 @@
     "DST_IP",
     "SRC_IP",
     "L4_DST_PORT",
-    "L4_SRC_PORT"
+    "L4_SRC_PORT",
+    "IPV6_FLOW_LABEL"
 ]
 INNER_HASH_FIELD_LIST = [
     "INNER_DST_MAC",
@@ -50,7 +51,8 @@
     "SAI_NATIVE_HASH_FIELD_DST_IP",
     "SAI_NATIVE_HASH_FIELD_SRC_IP",
     "SAI_NATIVE_HASH_FIELD_L4_DST_PORT",
-    "SAI_NATIVE_HASH_FIELD_L4_SRC_PORT"
+    "SAI_NATIVE_HASH_FIELD_L4_SRC_PORT",
+    "SAI_NATIVE_HASH_FIELD_IPV6_FLOW_LABEL"
 ]
 SAI_INNER_HASH_FIELD_LIST = [
     "SAI_NATIVE_HASH_FIELD_INNER_DST_MAC",