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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2007-11-15 19:41:46 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:54:03 -0800 |
| commit | a47e5a988a575e64c8c9bae65a1dfe3dca7cba32 (patch) | |
| tree | 30c389efb3a98a7af24150e5f6462f3c379d1e63 /include | |
| parent | 85cc391c0e4584db594bfc4005c63c07c76c5077 (diff) | |
| download | linux-a47e5a988a575e64c8c9bae65a1dfe3dca7cba32.tar.gz linux-a47e5a988a575e64c8c9bae65a1dfe3dca7cba32.tar.bz2 linux-a47e5a988a575e64c8c9bae65a1dfe3dca7cba32.zip | |
[TCP]: Convert highest_sack to sk_buff to allow direct access
It is going to replace the sack fastpath hint quite soon... :-)
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tcp.h | 6 | ||||
| -rw-r--r-- | include/net/tcp.h | 10 |
2 files changed, 14 insertions, 2 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index bac17c59b24e..34acee662230 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -332,8 +332,10 @@ struct tcp_sock { struct tcp_sack_block_wire recv_sack_cache[4]; - u32 highest_sack; /* Start seq of globally highest revd SACK - * (validity guaranteed only if sacked_out > 0) */ + struct sk_buff *highest_sack; /* highest skb with SACK received + * (validity guaranteed only if + * sacked_out > 0) + */ /* from STCP, retrans queue hinting */ struct sk_buff* lost_skb_hint; diff --git a/include/net/tcp.h b/include/net/tcp.h index d893b4480769..0ede804b16d4 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1312,6 +1312,16 @@ static inline int tcp_write_queue_empty(struct sock *sk) return skb_queue_empty(&sk->sk_write_queue); } +/* Start sequence of the highest skb with SACKed bit, valid only if + * sacked > 0 or when the caller has ensured validity by itself. + */ +static inline u32 tcp_highest_sack_seq(struct tcp_sock *tp) +{ + if (!tp->sacked_out) + return tp->snd_una; + return TCP_SKB_CB(tp->highest_sack)->seq; +} + /* /proc */ enum tcp_seq_states { TCP_SEQ_STATE_LISTENING, |