It is a prep work to get dst freeing from fib tree undergo
a rcu grace period.
The following is a common paradigm:
if (ip6_del_rt(rt))
dst_free(rt)
which means, if rt cannot be deleted from the fib tree, dst_free(rt) now.
1. We don't know the ip6_del_rt(rt) failure is because it
was no
On Fri, Sep 04, 2015 at 04:12:41PM -0700, Martin KaFai Lau wrote:
> @@ -1962,6 +1961,9 @@ static int __ip6_del_rt(struct rt6_info *rt, struct
> nl_info *info)
> if (rt == net->ipv6.ip6_null_entry) {
> err = -ENOENT;
> goto out;
> + } else if (rt->dst.flags & D
