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Date: Fri, 10 Aug 2007 14:30:46 +0300 (EEST)
From: "Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To: David Miller <davem@...emloft.net>
cc: Netdev <netdev@...r.kernel.org>
Subject: [PATCH net-2.6.24] [TCP]: Update comment about highest_sack validity
This stale info came from the original idea, which proved to be
unnecessarily complex, sacked_out > 0 is easy to do and that when
it's going to be needed anyway (it _can_ be valid also when
sacked_out == 0 but there's not going to be a guarantee about it
for now).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
---
include/linux/tcp.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 1f12fa0..f8cf090 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -332,7 +332,8 @@ struct tcp_sock {
struct tcp_sack_block_wire recv_sack_cache[4];
- u32 highest_sack; /* Start seq of globally highest revd SACK (valid only in slowpath) */
+ u32 highest_sack; /* Start seq of globally highest revd SACK
+ * (validity guaranteed only if sacked_out > 0) */
/* from STCP, retrans queue hinting */
struct sk_buff* lost_skb_hint;
--
1.5.0.6
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