releases/4.4.223/udp-restore-udplite-many-cast-delivery.patch

From 73e2d5e34b6cdd1080038daf3d6d6d744a9eefe6 Mon Sep 17 00:00:00 2001
From: Pablo Neira <pablo@netfilter.org>
Date: Mon, 14 Nov 2016 23:40:30 +0100
Subject: udp: restore UDPlite many-cast delivery

From: Pablo Neira <pablo@netfilter.org>

commit 73e2d5e34b6cdd1080038daf3d6d6d744a9eefe6 upstream.

Honor udptable parameter that is passed to __udp*_lib_mcast_deliver(),
otherwise udplite broadcast/multicast use the wrong table and it breaks.

Fixes: 2dc41cff7545 ("udp: Use hash2 for long hash1 chains in __udp*_lib_mcast_deliver.")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ipv4/udp.c |    6 +++---
 net/ipv6/udp.c |    6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1685,10 +1685,10 @@ static int __udp4_lib_mcast_deliver(stru
 
 	if (use_hash2) {
 		hash2_any = udp4_portaddr_hash(net, htonl(INADDR_ANY), hnum) &
-			    udp_table.mask;
-		hash2 = udp4_portaddr_hash(net, daddr, hnum) & udp_table.mask;
+			    udptable->mask;
+		hash2 = udp4_portaddr_hash(net, daddr, hnum) & udptable->mask;
 start_lookup:
-		hslot = &udp_table.hash2[hash2];
+		hslot = &udptable->hash2[hash2];
 		offset = offsetof(typeof(*sk), __sk_common.skc_portaddr_node);
 	}
 
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -801,10 +801,10 @@ static int __udp6_lib_mcast_deliver(stru
 
 	if (use_hash2) {
 		hash2_any = udp6_portaddr_hash(net, &in6addr_any, hnum) &
-			    udp_table.mask;
-		hash2 = udp6_portaddr_hash(net, daddr, hnum) & udp_table.mask;
+			    udptable->mask;
+		hash2 = udp6_portaddr_hash(net, daddr, hnum) & udptable->mask;
 start_lookup:
-		hslot = &udp_table.hash2[hash2];
+		hslot = &udptable->hash2[hash2];
 		offset = offsetof(typeof(*sk), __sk_common.skc_portaddr_node);
 	}