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tun: remove unnecessary check in tun_flow_update

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caller has guaranted that rxhash is not zero

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Li RongQing 2018-12-06 16:28:11 +08:00 committed by David S. Miller
parent 83b1bc122c
commit 5c327f673d
1 changed files with 1 additions and 4 deletions
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5
drivers/net/tun.c
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@ -529,10 +529,7 @@ static void tun_flow_update(struct tun_struct *tun, u32 rxhash,
unsigned long delay = tun->ageing_time; unsigned long delay = tun->ageing_time;
u16 queue_index = tfile->queue_index; u16 queue_index = tfile->queue_index;
if (!rxhash) head = &tun->flows[tun_hashfn(rxhash)];
return;
else
head = &tun->flows[tun_hashfn(rxhash)];
rcu_read_lock(); rcu_read_lock();