From ddaa1c276d7974ce76c07daa78161439c9998c7a Mon Sep 17 00:00:00 2001
From: Christoph Petrausch <christoph.petrausch@inovex.de>
Date: Tue, 29 May 2018 10:26:19 +0200
Subject: [PATCH] Added support for RFC 8203 in notification decoder
---
protocols/bgp/packet/bgp.go | 4 ++++
protocols/bgp/packet/decoder.go | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/protocols/bgp/packet/bgp.go b/protocols/bgp/packet/bgp.go
index 41a2113f..3b6e0129 100644
--- a/protocols/bgp/packet/bgp.go
+++ b/protocols/bgp/packet/bgp.go
@@ -50,6 +50,10 @@ const (
InvalidNetworkField = 10
MalformedASPath = 11
+ // Notification Msg Subcodes
+ AdministrativeShutdown = 2
+ AdministrativeReset = 4
+
// Attribute Type Codes
OriginAttr = 1
ASPathAttr = 2
diff --git a/protocols/bgp/packet/decoder.go b/protocols/bgp/packet/decoder.go
index 961789b3..31583bf1 100644
--- a/protocols/bgp/packet/decoder.go
+++ b/protocols/bgp/packet/decoder.go
@@ -114,7 +114,7 @@ func decodeNotificationMsg(buf *bytes.Buffer) (*BGPNotification, error) {
return invalidErrCode(msg)
}
case Cease:
- if msg.ErrorSubcode != 0 {
+ if !(msg.ErrorSubcode == 0 || msg.ErrorSubcode == AdministrativeShutdown || msg.ErrorSubcode == AdministrativeReset) {
return invalidErrCode(msg)
}
default:
--
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