From abe9d9f67f2c2c696ef26690fa8518dfc4e28728 Mon Sep 17 00:00:00 2001
From: Ghanan Gowripalan <ghanan@google.com>
Date: Wed, 6 Jan 2021 11:39:14 -0800
Subject: Support add/remove IPv6 multicast group sock opt

IPv4 was always supported but UDP never supported joining/leaving IPv6
multicast groups via socket options.

Add: IPPROTO_IPV6, IPV6_JOIN_GROUP/IPV6_ADD_MEMBERSHIP
Remove: IPPROTO_IPV6, IPV6_LEAVE_GROUP/IPV6_DROP_MEMBERSHIP

Test: integration_test.TestUDPAddRemoveMembershipSocketOption
PiperOrigin-RevId: 350396072
---
 pkg/abi/linux/socket.go | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'pkg/abi/linux')

diff --git a/pkg/abi/linux/socket.go b/pkg/abi/linux/socket.go
index 556892dc3..8591acbf2 100644
--- a/pkg/abi/linux/socket.go
+++ b/pkg/abi/linux/socket.go
@@ -250,6 +250,12 @@ type SockAddrInet struct {
 	_      [8]uint8 // pad to sizeof(struct sockaddr).
 }
 
+// Inet6MulticastRequest is struct ipv6_mreq, from uapi/linux/in6.h.
+type Inet6MulticastRequest struct {
+	MulticastAddr  Inet6Addr
+	InterfaceIndex int32
+}
+
 // InetMulticastRequest is struct ip_mreq, from uapi/linux/in.h.
 type InetMulticastRequest struct {
 	MulticastAddr InetAddr
-- 
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