1 files changed, 60 insertions, 0 deletions
diff --git a/lib/libtle_glue/util.c b/lib/libtle_glue/util.c
new file mode 100644
index 0000000..69fc555
--- /dev/null
+++ b/lib/libtle_glue/util.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2018 Ant Financial Services Group.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <pthread.h>
+#include <sched.h>
+#include <unistd.h>
+
+#include "util.h"
+
+#define NUMA_NODE_PATH "/sys/devices/system/node"
+
+static unsigned
+eal_cpu_socket_id(unsigned lcore_id)
+{
+        unsigned socket;
+        char path[PATH_MAX];
+
+        for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+                snprintf(path, sizeof(path), "%s/node%u/cpu%u", NUMA_NODE_PATH,
+                	 socket, lcore_id);
+                if (access(path, F_OK) == 0)
+                        return socket;
+        }
+        return 0;
+}
+
+uint32_t
+get_socket_id(void)
+{
+	int err;
+	uint32_t i;
+	cpu_set_t cpuset;
+
+	CPU_ZERO(&cpuset);
+	err = pthread_getaffinity_np(pthread_self(),
+				     sizeof(cpuset), &cpuset);
+	if (err)
+		return 0;
+
+	for (i = 0; i < CPU_SETSIZE; i++)
+		if (CPU_ISSET(i, &cpuset))
+			break;
+
+	return eal_cpu_socket_id(i);
+}