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[TCP]: Abstract out all write queue operations.

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This allows the write queue implementation to be changed,
for example, to one which allows fast interval searching.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2007-03-07 12:12:44 -08:00
parent 02ea4923b4
commit fe067e8ab5
7 changed files with 221 additions and 117 deletions
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21
include/net/sock.h
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@@ -710,15 +710,6 @@ static inline void sk_stream_mem_reclaim(struct sock *sk)
__sk_stream_mem_reclaim(sk);
}
static inline void sk_stream_writequeue_purge(struct sock *sk)
{
struct sk_buff *skb;
while ((skb = __skb_dequeue(&sk->sk_write_queue)) != NULL)
sk_stream_free_skb(sk, skb);
sk_stream_mem_reclaim(sk);
}
static inline int sk_stream_rmem_schedule(struct sock *sk, struct sk_buff *skb)
{
return (int)skb->truesize <= sk->sk_forward_alloc ||
@@ -1256,18 +1247,6 @@ static inline struct page *sk_stream_alloc_page(struct sock *sk)
return page;
}
#define sk_stream_for_retrans_queue(skb, sk) \
for (skb = (sk)->sk_write_queue.next; \
(skb != (sk)->sk_send_head) && \
(skb != (struct sk_buff *)&(sk)->sk_write_queue); \
skb = skb->next)
/*from STCP for fast SACK Process*/
#define sk_stream_for_retrans_queue_from(skb, sk) \
for (; (skb != (sk)->sk_send_head) && \
(skb != (struct sk_buff *)&(sk)->sk_write_queue); \
skb = skb->next)
/*
* Default write policy as shown to user space via poll/select/SIGIO
*/