diff --git a/src/proto/grpc/testing/control.proto b/src/proto/grpc/testing/control.proto
index be387cf7869279cbd5d2de9d5f1690e8c1cc2098..529313cfb1ea5f38b0d9576838f2d1385acfe5f1 100644
--- a/src/proto/grpc/testing/control.proto
+++ b/src/proto/grpc/testing/control.proto
@@ -78,6 +78,14 @@ message SecurityParams {
   string server_host_override = 2;
 }
 
+message ChannelArg {
+  string name = 1;
+  oneof value {
+    string str_value = 2;
+    int32 int_value = 3;
+  }
+}
+
 message ClientConfig {
   // List of targets to connect to. At least one target needs to be specified.
   repeated string server_targets = 1;
@@ -103,6 +111,8 @@ message ClientConfig {
 
   // If we use an OTHER_CLIENT client_type, this string gives more detail
   string other_client_api = 15;
+
+  repeated ChannelArg channel_args = 16;
 }
 
 message ClientStatus { ClientStats stats = 1; }
diff --git a/test/cpp/qps/client.h b/test/cpp/qps/client.h
index fdd78ebb899d2626278e4263674a6acbb8f978f4..18f9778fc6f90444d9842dd5e19ab442de881b6b 100644
--- a/test/cpp/qps/client.h
+++ b/test/cpp/qps/client.h
@@ -409,6 +409,7 @@ class ClientImpl : public Client {
       // old compilers happy with using this in std::vector
       ChannelArguments args;
       args.SetInt("shard_to_ensure_no_subchannel_merges", shard);
+      set_channel_args(config, &args);
       channel_ = CreateTestChannel(
           target, config.security_params().server_host_override(),
           config.has_security_params(), !config.security_params().use_test_ca(),
@@ -423,6 +424,18 @@ class ClientImpl : public Client {
     StubType* get_stub() { return stub_.get(); }
 
    private:
+    void set_channel_args(const ClientConfig& config, ChannelArguments* args) {
+      for (auto channel_arg : config.channel_args()) {
+        if (channel_arg.value_case() == ChannelArg::kStrValue) {
+          args->SetString(channel_arg.name(), channel_arg.str_value());
+        } else if (channel_arg.value_case() == ChannelArg::kIntValue) {
+          args->SetInt(channel_arg.name(), channel_arg.int_value());
+        } else {
+          gpr_log(GPR_ERROR, "Empty channel arg value.");
+        }
+      }
+    }
+
     std::shared_ptr<Channel> channel_;
     std::unique_ptr<StubType> stub_;
   };