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net/sock: factor out dequeue/peek with offset code

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And update __sk_queue_drop_skb() to work on the specified queue.
This will help the udp protocol to use an additional private
rx queue in a later patch.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni
2017-05-16 11:20:13 +02:00
committed by David S. Miller
parent 9dca599b7f
commit 65101aeca5
3 changed files with 60 additions and 41 deletions
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7
include/linux/skbuff.h
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@@ -3056,6 +3056,13 @@ static inline void skb_frag_list_init(struct sk_buff *skb)
int __skb_wait_for_more_packets(struct sock *sk, int *err, long *timeo_p,
const struct sk_buff *skb);
struct sk_buff *__skb_try_recv_from_queue(struct sock *sk,
struct sk_buff_head *queue,
unsigned int flags,
void (*destructor)(struct sock *sk,
struct sk_buff *skb),
int *peeked, int *off, int *err,
struct sk_buff **last);
struct sk_buff *__skb_try_recv_datagram(struct sock *sk, unsigned flags,
void (*destructor)(struct sock *sk,
struct sk_buff *skb),