Introduuce new ZInfoNTPSource message in proto/info/ntpsource.proto

This will be published from EVE.

Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>

proto/info/ntpsources.proto

@@ -0,0 +1,66 @@
+// Copyright(c) 2024 Zededa, Inc.
+// SPDX-License-Identifier: Apache-2.0
+
+syntax = "proto3";
+
+import "google/protobuf/timestamp.proto";
+
+package org.lfedge.eve.info;
+option go_package  = "github.com/lf-edge/eve-api/go/info";
+
+option java_package = "org.lfedge.eve.info";
+
+// Enum for describing the NTP peer state
+enum NTPPeerStateType {
+  NTP_PEER_STATE_SYNC        = 0;
+  NTP_PEER_STATE_UNREACH     = 1;
+  NTP_PEER_STATE_FALSETICKER = 2;
+  NTP_PEER_STATE_JITTERY     = 3;
+  NTP_PEER_STATE_CANDIDATE   = 4;
+  NTP_PEER_STATE_OUTLIER     = 5;
+}
+
+// Flags from RFC 5905 + defined by chrony
+enum NTPPeerFlagBitmap {
+  NTP_PEER_PKT_FLAG_UNKNOWN          = 0x0000;
+  NTP_PEER_PKT_FLAG_DUP              = 0x0001;
+  NTP_PEER_PKT_FLAG_BOGUS            = 0x0002;
+  NTP_PEER_PKT_FLAG_INVALID          = 0x0004;
+  NTP_PEER_PKT_FLAG_AUTH             = 0x0008;
+  NTP_PEER_PKT_FLAG_STRATUM          = 0x0010;
+  NTP_PEER_PKT_FLAG_HEADER           = 0x0020;
+  NTP_PEER_TST_FLAG_MAX_DELAY        = 0x0040;
+  NTP_PEER_TST_FLAG_DELAY_RATIO      = 0x0080;
+  NTP_PEER_TST_FLAG_DELAY_DEV_RATION = 0x0100;
+  NTP_PEER_TST_FLAG_SYNC_LOOP        = 0x0200;
+}
+
+// As described in http://doc.ntp.org/current-stable/ntpq.html
+message NTPPeer {
+  bool     authenticated             = 1;
+  bool     reachable                 = 2; // (reachability == 0xff), i.e. 8 attempts
+  uint32   reachability              = 3;
+  NTPPeerStateType state             = 4;
+  string   hostname                  = 5;
+  string   src_addr                  = 6;
+  uint32   src_port                  = 7;
+  string   dst_addr                  = 8;
+  uint32   dst_port                  = 9;
+  uint32   leap                      = 10;
+  uint32   stratum                   = 11;
+  uint32   precision                 = 12;
+  string   ref_id                    = 13;
+  google.protobuf.Timestamp ref_time = 14;
+  sint32   poll                      = 15;
+  uint32   flags                     = 16; // bitmap from NTPPeerFlagBitmap
+  double   offset                    = 17;
+  double   delay                     = 18;
+  double   dispersion                = 19;
+  double   jitter                    = 20;
+  double   root_delay                = 21;
+  double   root_disp                 = 22;
+}
+
+message ZInfoNTPSources {
+  repeated NTPPeer ntp_peers = 1;
+}