inetpeer: Invalidate the inetpeer tree along with the routing cache

We initialize the routing metrics with the values cached on the
inetpeer in rt_init_metrics(). So if we have the metrics cached on the
inetpeer, we ignore the user configured fib_metrics.

To fix this issue, we replace the old tree with a fresh initialized
inet_peer_base. The old tree is removed later with a delayed work queue.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 06b795dd5906..ff04a33acf00 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -41,6 +41,7 @@ struct inet_peer {
         u32                     pmtu_orig;
         u32                     pmtu_learned;
         struct inetpeer_addr_base redirect_learned;
+        struct list_head        gc_list;
         /*
          * Once inet_peer is queued for deletion (refcnt == -1), following fields
          * are not available: rid, ip_id_count, tcp_ts, tcp_ts_stamp
@@ -96,6 +97,8 @@ static inline struct inet_peer *inet_getpeer_v6(const struct in6_addr *v6daddr,
 extern void inet_putpeer(struct inet_peer *p);
 extern bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout);
 
+extern void inetpeer_invalidate_tree(int family);
+
 /*
  * temporary check to make sure we dont access rid, ip_id_count, tcp_ts,
  * tcp_ts_stamp if no refcount is taken on inet_peer