Store metadata attribute values in big endian

Author: sangjinhan

core/modules/set_metadata.cc

@@ -62,8 +62,7 @@ CommandResponse SetMetadata::AddAttrOne(
   // stored in memory). value_bin is a short stream of bytes, which means that
   // its data will never be reordered.
   if (attr.value_case() == bess::pb::SetMetadataArg_Attribute::kValueInt) {
-    if (!bess::utils::uint64_to_bin(&value, attr.value_int(), size,
-                                    bess::utils::is_be_system())) {
+    if (!bess::utils::uint64_to_bin(&value, attr.value_int(), size, true)) {
       return CommandFailure(EINVAL,
                             "'value_int' field has not a "
                             "correct %zu-byte value",

core/modules/wildcard_match.cc

@@ -198,15 +198,11 @@ CommandResponse WildcardMatch::ExtractKeyMask(const T &arg, wm_hkey_t *key,
     uint64_t v = 0;
     uint64_t m = 0;
 
-    bool force_be = (fields_[i].attr_id < 0);
-
-    if (!bess::utils::uint64_to_bin(&v, arg.values(i), field_size,
-                                    force_be || bess::utils::is_be_system())) {
+    if (!bess::utils::uint64_to_bin(&v, arg.values(i), field_size, true)) {
       return CommandFailure(EINVAL, "idx %zu: not a correct %d-byte value", i,
                             field_size);
-    } else if (!bess::utils::uint64_to_bin(
-                   &m, arg.masks(i), field_size,
-                   force_be || bess::utils::is_be_system())) {
+    } else if (!bess::utils::uint64_to_bin(&m, arg.masks(i), field_size,
+                                           true)) {
       return CommandFailure(EINVAL, "idx %zu: not a correct %d-byte mask", i,
                             field_size);
     }