On 6/3/19 3:58 PM, Wei Wang wrote: > Hmm... I am still a bit concerned with the ip6_create_rt_rcu() call. > If we have a blackholed nexthop, the lookup code here always tries to > create an rt cache entry for every lookup. > Maybe we could reuse the pcpu cache logic for this? So we only create > new dst cache on the CPU if there is no cache created before.
I'll take a look. Long term, I would like to see IPv6 separate FIB lookups from dst's - like IPv4 does. In that case reject routes would not use a dst_entry; rather the fib lookups return an error code.
