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ipv6: Don't create clones of host routes.
[android-x86/kernel.git] / net / ipv6 / route.c
index 1c29f95..e7db701 100644 (file)
@@ -128,6 +128,7 @@ static struct dst_ops ip6_dst_blackhole_ops = {
        .destroy                =       ip6_dst_destroy,
        .check                  =       ip6_dst_check,
        .default_mtu            =       ip6_blackhole_default_mtu,
+       .default_advmss         =       ip6_default_advmss,
        .update_pmtu            =       ip6_rt_blackhole_update_pmtu,
 };
 
@@ -738,8 +739,10 @@ restart:
 
        if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP))
                nrt = rt6_alloc_cow(rt, &fl->fl6_dst, &fl->fl6_src);
-       else
+       else if (!(rt->dst.flags & DST_HOST))
                nrt = rt6_alloc_clone(rt, &fl->fl6_dst);
+       else
+               goto out2;
 
        dst_release(&rt->dst);
        rt = nrt ? : net->ipv6.ip6_null_entry;
@@ -2556,14 +2559,16 @@ static
 int ipv6_sysctl_rtcache_flush(ctl_table *ctl, int write,
                              void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-       struct net *net = current->nsproxy->net_ns;
-       int delay = net->ipv6.sysctl.flush_delay;
-       if (write) {
-               proc_dointvec(ctl, write, buffer, lenp, ppos);
-               fib6_run_gc(delay <= 0 ? ~0UL : (unsigned long)delay, net);
-               return 0;
-       } else
+       struct net *net;
+       int delay;
+       if (!write)
                return -EINVAL;
+
+       net = (struct net *)ctl->extra1;
+       delay = net->ipv6.sysctl.flush_delay;
+       proc_dointvec(ctl, write, buffer, lenp, ppos);
+       fib6_run_gc(delay <= 0 ? ~0UL : (unsigned long)delay, net);
+       return 0;
 }
 
 ctl_table ipv6_route_table_template[] = {
@@ -2650,6 +2655,7 @@ struct ctl_table * __net_init ipv6_route_sysctl_init(struct net *net)
 
        if (table) {
                table[0].data = &net->ipv6.sysctl.flush_delay;
+               table[0].extra1 = net;
                table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh;
                table[2].data = &net->ipv6.sysctl.ip6_rt_max_size;
                table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;