From fbc4a8dbd1d1939854dbeb6ccfd4c6267f85c9ec Mon Sep 17 00:00:00 2001
From: Ryan Heacock <rheacock@google.com>
Date: Thu, 19 Nov 2020 18:13:24 -0800
Subject: Perform IGMPv2 when joining IPv4 multicast groups

Added headers, stats, checksum parsing capabilities from RFC 2236 describing
IGMPv2.

IGMPv2 state machine is implemented for each condition, sending and receiving
IGMP Membership Reports and Leave Group messages with backwards compatibility
with IGMPv1 routers.

Test:
* Implemented igmp header parser and checksum calculator in header/igmp_test.go
* ipv4/igmp_test.go tests incoming and outgoing IGMP messages and pathways.
* Added unit test coverage for IGMPv2 RFC behavior + IGMPv1 backwards
   compatibility in ipv4/igmp_test.go.

Fixes #4682

PiperOrigin-RevId: 343408809
---
 pkg/tcpip/header/BUILD | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'pkg/tcpip/header/BUILD')

diff --git a/pkg/tcpip/header/BUILD b/pkg/tcpip/header/BUILD
index ca6cbe41a..144093c3a 100644
--- a/pkg/tcpip/header/BUILD
+++ b/pkg/tcpip/header/BUILD
@@ -11,6 +11,7 @@ go_library(
         "gue.go",
         "icmpv4.go",
         "icmpv6.go",
+        "igmp.go",
         "interfaces.go",
         "ipv4.go",
         "ipv6.go",
@@ -40,6 +41,7 @@ go_test(
     size = "small",
     srcs = [
         "checksum_test.go",
+        "igmp_test.go",
         "ipv6_test.go",
         "ipversion_test.go",
         "tcp_test.go",
-- 
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