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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2011-01-02 18:15:58 +0100
committerGerrit Renker <gerrit@erg.abdn.ac.uk>2011-01-07 12:22:44 +0100
commitbfbb23466adcbc77facea3046b44f75530079472 (patch)
tree31e28ac15e808861cd261e9600c4e7642d8aa73f /Documentation/networking
parent763dadd47c884853a22f2f19ea27e58431303ff3 (diff)
downloadblackbird-op-linux-bfbb23466adcbc77facea3046b44f75530079472.tar.gz
blackbird-op-linux-bfbb23466adcbc77facea3046b44f75530079472.zip
dccp: make upper bound for seq_window consistent on 32/64 bit
The 'seq_window' sysctl sets the initial value for the DCCP Sequence Window, which may range from 32..2^46-1 (RFC 4340, 7.5.2). The patch sets the upper bound consistently to 2^32-1 on both 32 and 64 bit systems, which should be sufficient - with a RTT of 1sec and 1-byte packets, a seq_window of 2^32-1 corresponds to a link speed of 34 Gbps. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/dccp.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/networking/dccp.txt b/Documentation/networking/dccp.txt
index b395ca6a49f2..811872b45bee 100644
--- a/Documentation/networking/dccp.txt
+++ b/Documentation/networking/dccp.txt
@@ -167,6 +167,7 @@ rx_ccid = 2
seq_window = 100
The initial sequence window (sec. 7.5.2) of the sender. This influences
the local ackno validity and the remote seqno validity windows (7.5.1).
+ Values in the range Wmin = 32 (RFC 4340, 7.5.2) up to 2^32-1 can be set.
tx_qlen = 5
The size of the transmit buffer in packets. A value of 0 corresponds
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