ipv6: make ECMP route replacement less greedy

[firefly-linux-kernel-4.4.55.git] / net / ipv6 / route.c

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 3f164d3aaee2eaa7aa246d6c100ef405fd3016e0..36bf4c3fe4f5deb1bb43c9c8f9c8797c27971b2e 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1727,6 +1727,8 @@ static int ip6_convert_metrics(struct mx6_config *mxc,
                } else {
                        val = nla_get_u32(nla);
                }
+               if (type == RTAX_HOPLIMIT && val > 255)
+                       val = 255;
                if (type == RTAX_FEATURES && (val & ~RTAX_FEATURE_MASK))
                        goto err;
 
@@ -3138,7 +3140,9 @@ static int rt6_fill_node(struct net *net,
        if (iif) {
 #ifdef CONFIG_IPV6_MROUTE
                if (ipv6_addr_is_multicast(&rt->rt6i_dst.addr)) {
-                       int err = ip6mr_get_route(net, skb, rtm, nowait);
+                       int err = ip6mr_get_route(net, skb, rtm, nowait,
+                                                 portid);
+
                        if (err <= 0) {
                                if (!nowait) {
                                        if (err == 0)
@@ -3192,7 +3196,8 @@ static int rt6_fill_node(struct net *net,
        if (nla_put_u8(skb, RTA_PREF, IPV6_EXTRACT_PREF(rt->rt6i_flags)))
                goto nla_put_failure;
 
-       lwtunnel_fill_encap(skb, rt->dst.lwtstate);
+       if (lwtunnel_fill_encap(skb, rt->dst.lwtstate) < 0)
+               goto nla_put_failure;
 
        nlmsg_end(skb, nlh);
        return 0;