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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2009-02-28 04:44:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-02 03:00:10 -0800 |
| commit | d3d2ae454501a4dec360995649e1b002a2ad90c5 (patch) | |
| tree | 7177d441defb9f3293ad83f71a57081a7c62962b /net | |
| parent | 62ad27619cbcf23fb8581ae72f3806c1d90a861d (diff) | |
| download | linux-3.10-d3d2ae454501a4dec360995649e1b002a2ad90c5.tar.gz linux-3.10-d3d2ae454501a4dec360995649e1b002a2ad90c5.tar.bz2 linux-3.10-d3d2ae454501a4dec360995649e1b002a2ad90c5.zip | |
tcp: Don't clear hints when tcp_fragmenting
1) We didn't remove any skbs, so no need to handle stale refs.
2) scoreboard_skb_hint is trivial, no timestamps were changed
so no need to clear that one
3) lost_skb_hint needs tweaking similar to that of
tcp_sacktag_one().
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_output.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index fa3c81aa4e6..3feab4d6929 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -771,7 +771,6 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, BUG_ON(len > skb->len); - tcp_clear_retrans_hints_partial(tp); nsize = skb_headlen(skb) - len; if (nsize < 0) nsize = 0; @@ -854,6 +853,12 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, tcp_verify_left_out(tp); } tcp_adjust_fackets_out(sk, skb, diff); + + if (tp->lost_skb_hint && + before(TCP_SKB_CB(skb)->seq, + TCP_SKB_CB(tp->lost_skb_hint)->seq) && + (tcp_is_fack(tp) || TCP_SKB_CB(skb)->sacked)) + tp->lost_cnt_hint -= diff; } /* Link BUFF into the send queue. */ |