--- /dev/null
+/*
+ * Copyright (c) 2018-2019 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+
+#include <sys/sysctl.h>
+#include <sys/proc.h>
+#include <net/multi_layer_pkt_log.h>
+
+SYSCTL_NODE(_net, OID_AUTO, mpklog,
+ CTLFLAG_RW | CTLFLAG_LOCKED, 0, "Multi-layer packet logging");
+
+/*
+ * Note: net_mpklog_enabled allows to override the interface flags IFXF_MPK_LOG
+ */
+int net_mpklog_enabled = 1;
+static int sysctl_net_mpklog_enabled SYSCTL_HANDLER_ARGS;
+SYSCTL_PROC(_net_mpklog, OID_AUTO, enabled, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
+ 0, 0, &sysctl_net_mpklog_enabled, "I", "Multi-layer packet logging enabled");
+
+static int sysctl_net_mpklog_type SYSCTL_HANDLER_ARGS;
+int net_mpklog_type = OS_LOG_TYPE_DEFAULT;
+SYSCTL_PROC(_net_mpklog, OID_AUTO, type, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
+ 0, 0, &sysctl_net_mpklog_type, "I", "Multi-layer packet logging type");
+
+SYSCTL_INT(_net_mpklog, OID_AUTO, version, CTLFLAG_RD | CTLFLAG_LOCKED,
+ (int *)NULL, MPKL_VERSION, "Multi-layer packet logging version");
+
+static int
+sysctl_net_mpklog_enabled SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int value = net_mpklog_enabled;
+
+ int error = sysctl_handle_int(oidp, &value, 0, req);
+ if (error || !req->newptr) {
+ return error;
+ }
+
+ net_mpklog_enabled = (value == 0) ? 0 : 1;
+
+ os_log(OS_LOG_DEFAULT, "%s:%d set net_mpklog_enabled to %d",
+ proc_best_name(current_proc()), proc_selfpid(), net_mpklog_enabled);
+
+ return 0;
+}
+
+static int
+sysctl_net_mpklog_type SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int value = net_mpklog_type;
+
+ int error = sysctl_handle_int(oidp, &value, 0, req);
+ if (error || !req->newptr) {
+ return error;
+ }
+
+ if (value != OS_LOG_TYPE_DEFAULT &&
+ value != OS_LOG_TYPE_INFO) {
+ return EINVAL;
+ }
+
+ net_mpklog_type = value;
+
+ os_log(OS_LOG_DEFAULT, "%s:%d set net_mpklog_type to %d (%s)",
+ proc_best_name(current_proc()), proc_selfpid(), net_mpklog_type,
+ net_mpklog_type == OS_LOG_TYPE_DEFAULT ? "default" : "info");
+
+ return 0;
+}