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ip6mr: do not get a device reference in pim6_rcv() 

pim6_rcv() is called under rcu_read_lock(), there is
no need to use dev_hold()/dev_put() pair.

IPv4 side was handled in commit 55747a0a73
("ipmr: __pim_rcv() is called under rcu_read_lock")

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2022-06-23 04:34:31 +00:00 committed by David S. Miller
parent 7fcb820c76
commit 0a24c43f54
1 changed files with 0 additions and 2 deletions
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2
net/ipv6/ip6mr.c
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@ -554,7 +554,6 @@ static int pim6_rcv(struct sk_buff *skb)
read_lock(&mrt_lock);
if (reg_vif_num >= 0)
reg_dev = mrt->vif_table[reg_vif_num].dev;
dev_hold(reg_dev);
read_unlock(&mrt_lock);
if (!reg_dev)
@ -570,7 +569,6 @@ static int pim6_rcv(struct sk_buff *skb)
netif_rx(skb);
dev_put(reg_dev);
return 0;
drop:
kfree_skb(skb);