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net: add common accessor for setting dropcount on packets

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As part of an effort to move skb->dropcount to skb->cb[], use
a common function in order to set dropcount in struct sk_buff.

Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eyal Birger 2015-03-01 14:58:30 +02:00 committed by David S. Miller
parent b4772ef879
commit 3bc3b96f3b
3 changed files with 8 additions and 2 deletions
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6
include/net/sock.h
View File

@ -2081,6 +2081,12 @@ static inline int sock_intr_errno(long timeo)
#define sock_skb_cb_check_size(size) \
BUILD_BUG_ON((size) > FIELD_SIZEOF(struct sk_buff, cb))
static inline void
sock_skb_set_dropcount(const struct sock *sk, struct sk_buff *skb)
{
skb->dropcount = atomic_read(&sk->sk_drops);
}
void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
struct sk_buff *skb);
void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk,

2
net/core/sock.c
View File

@ -466,7 +466,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
skb_dst_force(skb);
spin_lock_irqsave(&list->lock, flags);
skb->dropcount = atomic_read(&sk->sk_drops);
sock_skb_set_dropcount(sk, skb);
__skb_queue_tail(list, skb);
spin_unlock_irqrestore(&list->lock, flags);

2
net/packet/af_packet.c
View File

@ -1845,7 +1845,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
spin_lock(&sk->sk_receive_queue.lock);
po->stats.stats1.tp_packets++;
skb->dropcount = atomic_read(&sk->sk_drops);
sock_skb_set_dropcount(sk, skb);
__skb_queue_tail(&sk->sk_receive_queue, skb);
spin_unlock(&sk->sk_receive_queue.lock);
sk->sk_data_ready(sk);