ipv6: initialize rt6->rt6i_uncached in all pre-allocated dst entries

Initialize rt6->rt6i_uncached on the following pre-allocated dsts:
net->ipv6.ip6_null_entry
net->ipv6.ip6_prohibit_entry
net->ipv6.ip6_blk_hole_entry

This is a preparation patch for later commits to be able to distinguish
dst entries in uncached list by doing:
!list_empty(rt6->rt6i_uncached)

Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 5469e0a..c71f0e4 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -6016,6 +6016,7 @@ static int __net_init ip6_route_net_init(struct net *net)
        net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops;
        dst_init_metrics(&net->ipv6.ip6_null_entry->dst,
                         ip6_template_metrics, true);
+       INIT_LIST_HEAD(&net->ipv6.ip6_null_entry->rt6i_uncached);
 
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
        net->ipv6.fib6_has_custom_rules = false;
@@ -6027,6 +6028,7 @@ static int __net_init ip6_route_net_init(struct net *net)
        net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops;
        dst_init_metrics(&net->ipv6.ip6_prohibit_entry->dst,
                         ip6_template_metrics, true);
+       INIT_LIST_HEAD(&net->ipv6.ip6_prohibit_entry->rt6i_uncached);
 
        net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
                                               sizeof(*net->ipv6.ip6_blk_hole_entry),
@@ -6036,6 +6038,7 @@ static int __net_init ip6_route_net_init(struct net *net)
        net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
        dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst,
                         ip6_template_metrics, true);
+       INIT_LIST_HEAD(&net->ipv6.ip6_blk_hole_entry->rt6i_uncached);
 #endif
 
        net->ipv6.sysctl.flush_delay = 0;