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tcp: Use SKB queue handling interfaces instead of by-hand versions. 

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-09-23 00:50:13 -07:00
parent 1164f52a24
commit cd07a8ea0d
1 changed files with 15 additions and 25 deletions
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40
include/net/tcp.h
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@ -1181,49 +1181,45 @@ static inline void tcp_write_queue_purge(struct sock *sk)
static inline struct sk_buff *tcp_write_queue_head(struct sock *sk) static inline struct sk_buff *tcp_write_queue_head(struct sock *sk)
{ {
struct sk_buff *skb = sk->sk_write_queue.next; return skb_peek(&sk->sk_write_queue);
if (skb == (struct sk_buff *) &sk->sk_write_queue)
return NULL;
return skb;
} }
static inline struct sk_buff *tcp_write_queue_tail(struct sock *sk) static inline struct sk_buff *tcp_write_queue_tail(struct sock *sk)
{ {
struct sk_buff *skb = sk->sk_write_queue.prev; return skb_peek_tail(&sk->sk_write_queue);
if (skb == (struct sk_buff *) &sk->sk_write_queue)
return NULL;
return skb;
} }
static inline struct sk_buff *tcp_write_queue_next(struct sock *sk, struct sk_buff *skb) static inline struct sk_buff *tcp_write_queue_next(struct sock *sk, struct sk_buff *skb)
{ {
return skb->next; return skb_queue_next(&sk->sk_write_queue, skb);
} }
#define tcp_for_write_queue(skb, sk) \ #define tcp_for_write_queue(skb, sk) \
for (skb = (sk)->sk_write_queue.next; \ skb_queue_walk(&(sk)->sk_write_queue, skb)
(skb != (struct sk_buff *)&(sk)->sk_write_queue); \
skb = skb->next)
#define tcp_for_write_queue_from(skb, sk) \ #define tcp_for_write_queue_from(skb, sk) \
for (; (skb != (struct sk_buff *)&(sk)->sk_write_queue);\ skb_queue_walk_from(&(sk)->sk_write_queue, skb)
skb = skb->next)
#define tcp_for_write_queue_from_safe(skb, tmp, sk) \ #define tcp_for_write_queue_from_safe(skb, tmp, sk) \
for (tmp = skb->next; \ skb_queue_walk_from_safe(&(sk)->sk_write_queue, skb, tmp)
(skb != (struct sk_buff *)&(sk)->sk_write_queue); \
skb = tmp, tmp = skb->next)
static inline struct sk_buff *tcp_send_head(struct sock *sk) static inline struct sk_buff *tcp_send_head(struct sock *sk)
{ {
return sk->sk_send_head; return sk->sk_send_head;
} }
static inline bool tcp_skb_is_last(const struct sock *sk,
const struct sk_buff *skb)
{
return skb_queue_is_last(&sk->sk_write_queue, skb);
}
static inline void tcp_advance_send_head(struct sock *sk, struct sk_buff *skb) static inline void tcp_advance_send_head(struct sock *sk, struct sk_buff *skb)
{ {
sk->sk_send_head = skb->next; if (tcp_skb_is_last(sk, skb))
if (sk->sk_send_head == (struct sk_buff *)&sk->sk_write_queue)
sk->sk_send_head = NULL; sk->sk_send_head = NULL;
else
sk->sk_send_head = tcp_write_queue_next(sk, skb);
} }
static inline void tcp_check_send_head(struct sock *sk, struct sk_buff *skb_unlinked) static inline void tcp_check_send_head(struct sock *sk, struct sk_buff *skb_unlinked)
@ -1284,12 +1280,6 @@ static inline void tcp_unlink_write_queue(struct sk_buff *skb, struct sock *sk)
__skb_unlink(skb, &sk->sk_write_queue); __skb_unlink(skb, &sk->sk_write_queue);
} }
static inline bool tcp_skb_is_last(const struct sock *sk,
const struct sk_buff *skb)
{
return skb_queue_is_last(&sk->sk_write_queue, skb);
}
static inline int tcp_write_queue_empty(struct sock *sk) static inline int tcp_write_queue_empty(struct sock *sk)
{ {
return skb_queue_empty(&sk->sk_write_queue); return skb_queue_empty(&sk->sk_write_queue);