From 93f58a757a0cee0f2fd4c2645f868ad8878d9134 Mon Sep 17 00:00:00 2001
From: g0dil <g0dil@wiback.org>
Date: Thu, 5 Mar 2009 15:05:46 +0000
Subject: [PATCH] Packets/DefaultBundle: ICMPv6Packet skips checksum
calculation when IPv6 header is missing
---
Packets/DefaultBundle/ICMPv6Packet.cc | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/Packets/DefaultBundle/ICMPv6Packet.cc b/Packets/DefaultBundle/ICMPv6Packet.cc
index dc8eea1a1..0556fec61 100644
--- a/Packets/DefaultBundle/ICMPv6Packet.cc
+++ b/Packets/DefaultBundle/ICMPv6Packet.cc
@@ -34,10 +34,15 @@ namespace {
registerICMPv6Packet (58);
}
-prefix_ boost::uint16_t senf::ICMPv6PacketParser::calcChecksum() const {
+prefix_ boost::uint16_t senf::ICMPv6PacketParser::calcChecksum()
+ const
+{
senf::IpChecksum summer;
senf::IPv6Packet ipv6 (packet().rfind<senf::IPv6Packet>(senf::nothrow));
+
+ if (! ipv6)
+ return 0u;
summer.feed( ipv6->source().i(),
ipv6->source().i() + senf::IPv6Packet::Parser::source_t::fixed_bytes );
--
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