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net: Fix skb_update_prio RCU usage.

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Change function rcu_dereference to rcu_dereference_bh to avoid warning

[ INFO: suspicious RCU usage. ]
-------------------------------
net/core/dev.c:2459 suspicious rcu_dereference_check() usage!

because we are locking with

rcu_read_lock_bh();

in function dev_queue_xmit(struct sk_buff *skb)

Signed-off-by: Igor Maravic <igorm@etf.rs>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Igor Maravic 2011-11-25 07:44:54 +00:00 committed by David S. Miller
parent 2bcc34bb98
commit 6977a79d36
1 changed files with 1 additions and 1 deletions
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net/core/dev.c
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@ -2473,7 +2473,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
#if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
static void skb_update_prio(struct sk_buff *skb)
{
struct netprio_map *map = rcu_dereference(skb->dev->priomap);
struct netprio_map *map = rcu_dereference_bh(skb->dev->priomap);
if ((!skb->priority) && (skb->sk) && map)
skb->priority = map->priomap[skb->sk->sk_cgrp_prioidx];