net: ipv6: more places need LOOPBACK_IFINDEX for flowi6_iif

To properly match iif in ip rules we have to provide
LOOPBACK_IFINDEX in flowi6_iif, not 0. Some ip6mr_fib_lookup
and fib6_rule_lookup callers need such fix.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 8659067..8250474 100644 (file)
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1633,7 +1633,7 @@ struct sock *mroute6_socket(struct net *net, struct sk_buff *skb)
 {
        struct mr6_table *mrt;
        struct flowi6 fl6 = {
-               .flowi6_iif     = skb->skb_iif,
+               .flowi6_iif     = skb->skb_iif ? : LOOPBACK_IFINDEX,
                .flowi6_oif     = skb->dev->ifindex,
                .flowi6_mark    = skb->mark,
        };

diff --git a/net/ipv6/netfilter/ip6t_rpfilter.c b/net/ipv6/netfilter/ip6t_rpfilter.c
index e0983f3..790e0c6 100644 (file)
--- a/net/ipv6/netfilter/ip6t_rpfilter.c
+++ b/net/ipv6/netfilter/ip6t_rpfilter.c
@@ -33,6 +33,7 @@ static bool rpfilter_lookup_reverse6(const struct sk_buff *skb,
        struct ipv6hdr *iph = ipv6_hdr(skb);
        bool ret = false;
        struct flowi6 fl6 = {
+               .flowi6_iif = LOOPBACK_IFINDEX,
                .flowlabel = (* (__be32 *) iph) & IPV6_FLOWINFO_MASK,
                .flowi6_proto = iph->nexthdr,
                .daddr = iph->saddr,

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 4011617..004fffb 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1273,6 +1273,7 @@ void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark)
        struct flowi6 fl6;
 
        memset(&fl6, 0, sizeof(fl6));
+       fl6.flowi6_iif = LOOPBACK_IFINDEX;
        fl6.flowi6_oif = oif;
        fl6.flowi6_mark = mark;
        fl6.daddr = iph->daddr;
@@ -1294,6 +1295,7 @@ void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
        struct flowi6 fl6;
 
        memset(&fl6, 0, sizeof(fl6));
+       fl6.flowi6_iif = LOOPBACK_IFINDEX;
        fl6.flowi6_oif = oif;
        fl6.flowi6_mark = mark;
        fl6.daddr = msg->dest;