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net: add __rcu annotation to sk_filter

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Add __rcu annotation to :
        (struct sock)->sk_filter

And use appropriate rcu primitives to reduce sparse warnings if
CONFIG_SPARSE_RCU_POINTER=y

Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2010-10-25 03:47:05 +00:00 • committed by David S. Miller
commit 0d7da9ddd9
6 changed files with 7 additions and 7 deletions
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2
net/ipv6/raw.c
View file

@ -373,7 +373,7 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
{
if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
if ((raw6_sk(sk)->checksum || rcu_dereference_raw(sk->sk_filter)) &&
skb_checksum_complete(skb)) {
atomic_inc(&sk->sk_drops);
kfree_skb(skb);

2
net/ipv6/udp.c
View file

@ -527,7 +527,7 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
}
}
if (sk->sk_filter) {
if (rcu_dereference_raw(sk->sk_filter)) {
if (udp_lib_checksum_complete(skb))
goto drop;
}