diff options
| author | Stephen Hemminger <shemminger@osdl.org> | 2005-11-10 17:14:59 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-11-10 17:14:59 -0800 |
| commit | 6a438bbe68c7013a42d9c5aee5a40d7dafdbe6ec (patch) | |
| tree | 09775f0479168cd53494155a5789e78df218b497 /include/net | |
| parent | caa20d9abe810be2ede9612b6c9db6ce7d6edf80 (diff) | |
| download | kernel_samsung_smdk4412-6a438bbe68c7013a42d9c5aee5a40d7dafdbe6ec.zip kernel_samsung_smdk4412-6a438bbe68c7013a42d9c5aee5a40d7dafdbe6ec.tar.gz kernel_samsung_smdk4412-6a438bbe68c7013a42d9c5aee5a40d7dafdbe6ec.tar.bz2 | |
[TCP]: speed up SACK processing
Use "hints" to speed up the SACK processing. Various forms
of this have been used by TCP developers (Web100, STCP, BIC)
to avoid the 2x linear search of outstanding segments.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/sock.h | 6 | ||||
| -rw-r--r-- | include/net/tcp.h | 9 |
2 files changed, 15 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index ff13c4c..982b4ec 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1247,6 +1247,12 @@ static inline struct page *sk_stream_alloc_page(struct sock *sk) (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 */ diff --git a/include/net/tcp.h b/include/net/tcp.h index 6e6f0f3..0f98480 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1207,6 +1207,15 @@ static inline void tcp_mib_init(void) TCP_ADD_STATS_USER(TCP_MIB_MAXCONN, -1); } +/*from STCP */ +static inline void clear_all_retrans_hints(struct tcp_sock *tp){ + tp->lost_skb_hint = NULL; + tp->scoreboard_skb_hint = NULL; + tp->retransmit_skb_hint = NULL; + tp->forward_skb_hint = NULL; + tp->fastpath_skb_hint = NULL; +} + /* /proc */ enum tcp_seq_states { TCP_SEQ_STATE_LISTENING, |