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udp: remove headers from UDP packets before queueing

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Remove UDP transport headers before queueing packets for reception.
This change simplifies a follow-up patch to add MSG_PEEK support.

Signed-off-by: Sam Kumar <samanthakumar@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
samanthakumar
2016-04-05 12:41:15 -04:00
committed by David S. Miller
parent b9bb53f383
commit e6afc8ace6
5 changed files with 41 additions and 20 deletions
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19
net/core/sock.c
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@ -402,9 +402,8 @@ static void sock_disable_timestamp(struct sock *sk, unsigned long flags)
}
int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
int err;
unsigned long flags;
struct sk_buff_head *list = &sk->sk_receive_queue;
@ -414,10 +413,6 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
return -ENOMEM;
}
err = sk_filter(sk, skb);
if (err)
return err;
if (!sk_rmem_schedule(sk, skb, skb->truesize)) {
atomic_inc(&sk->sk_drops);
return -ENOBUFS;
@ -440,6 +435,18 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
sk->sk_data_ready(sk);
return 0;
}
EXPORT_SYMBOL(__sock_queue_rcv_skb);
int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
int err;
err = sk_filter(sk, skb);
if (err)
return err;
return __sock_queue_rcv_skb(sk, skb);
}
EXPORT_SYMBOL(sock_queue_rcv_skb);
int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)