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ipv6: introduce dst_rt6_info() helper

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[ Upstream commit e8dfd42c17 ]

Instead of (struct rt6_info *)dst casts, we can use :

 #define dst_rt6_info(_ptr) \
         container_of_const(_ptr, struct rt6_info, dst)

Some places needed missing const qualifiers :

ip6_confirm_neigh(), ipv6_anycast_destination(),
ipv6_unicast_destination(), has_gateway()

v2: added missing parts (David Ahern)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 3301ab7d5a ("net/ipv6: release expired exception dst cached in socket")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eric Dumazet
2024-04-26 15:19:52 +00:00
committed by Greg Kroah-Hartman
parent 19a788bd40
commit 797a4c1f5b
30 changed files with 77 additions and 86 deletions
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drivers/net/vrf.c
+1 -1
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@@ -655,7 +655,7 @@ static int vrf_finish_output6(struct net *net, struct sock *sk,
skb->dev = dev;
rcu_read_lock();
nexthop = rt6_nexthop((struct rt6_info *)dst, &ipv6_hdr(skb)->daddr);
nexthop = rt6_nexthop(dst_rt6_info(dst), &ipv6_hdr(skb)->daddr);
neigh = __ipv6_neigh_lookup_noref(dst->dev, nexthop);
if (unlikely(!neigh))
neigh = __neigh_create(&nd_tbl, nexthop, dst->dev, false);