From: Wei Wang <wei...@google.com>

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 <wei...@google.com>
Acked-by: Eric Dumazet <eduma...@google.com>
Acked-by: Mahesh Bandewar <mahe...@google.com>
---
 net/ipv6/route.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 9dcbc56e4151..33dc8af9a4bf 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -6010,6 +6010,7 @@ 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;
@@ -6021,6 +6022,7 @@ 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),
@@ -6030,6 +6032,7 @@ 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;
-- 
2.22.0.410.gd8fdbe21b5-goog

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