From 1d6e55f195128813f96458203a9fa14204f9251e Mon Sep 17 00:00:00 2001 From: Thomas Goff Date: Tue, 27 Jan 2009 22:39:59 -0800 Subject: IPv6: Fix multicast routing bugs. This patch addresses the IPv6 multicast routing issues described below. It was tested with XORP 1.4/1.5 as the IPv6 PIM-SM routing daemon against FreeBSD peers. net/ipv6/ip6_input.c: - Don't try to forward link-local multicast packets. - Don't reset skb2->dev before calling ip6_mr_input() so packets can be identified as coming from the PIM register vif properly. net/ipv6/ip6mr.c: - Fix incoming PIM register messages processing: * The IPv6 pseudo-header should be included when checksumming PIM messages (RFC 4601 section 4.9; RFC 3973 section 4.7.1). * Packets decapsulated from PIM register messages should have skb->protocol ETH_P_IPV6. - Enable/disable IPv6 multicast forwarding on the corresponding interface when a routing daemon adds/removes a multicast virtual interface. - Remove incorrect skb_pull() to fix userspace signaling. - Enable/disable global IPv6 multicast forwarding when an IPv6 multicast routing socket is opened/closed. net/ipv6/route.c: - Don't use strict routing logic for packets decapsulated from PIM register messages (similar to disabling rp_filter for the IPv4 case). Signed-off-by: Thomas Goff Reviewed-by: Fred Templin Signed-off-by: David S. Miller --- net/ipv6/route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ipv6/route.c') diff --git a/net/ipv6/route.c b/net/ipv6/route.c index c4a59824ac2c..9c574235c905 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -794,7 +794,7 @@ void ip6_route_input(struct sk_buff *skb) .proto = iph->nexthdr, }; - if (rt6_need_strict(&iph->daddr)) + if (rt6_need_strict(&iph->daddr) && skb->dev->type != ARPHRD_PIMREG) flags |= RT6_LOOKUP_F_IFACE; skb->dst = fib6_rule_lookup(net, &fl, flags, ip6_pol_route_input); -- cgit v1.2.3