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authorRick Jones <rick.jones2@hp.com>2006-03-21 01:40:29 -0500
committerDavid S. Miller <davem@davemloft.net>2006-03-21 01:40:29 -0500
commit15d99e02babae8bc20b836917ace07d93e318149 (patch)
tree6a8941a3ef45f831161730aeee4a2fcc18cca78a /Documentation/networking/ip-sysctl.txt
parentc1b1bce8527c2c3cac7e2520ca54b7c04281033e (diff)
[TCP]: sysctl to allow TCP window > 32767 sans wscale
Back in the dark ages, we had to be conservative and only allow 15-bit window fields if the window scale option was not negotiated. Some ancient stacks used a signed 16-bit quantity for the window field of the TCP header and would get confused. Those days are long gone, so we can use the full 16-bits by default now. There is a sysctl added so that we can still interact with such old stacks Signed-off-by: Rick Jones <rick.jones2@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
-rw-r--r--Documentation/networking/ip-sysctl.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 651298ba019a..f12007b80a46 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -355,6 +355,13 @@ somaxconn - INTEGER
355 Defaults to 128. See also tcp_max_syn_backlog for additional tuning 355 Defaults to 128. See also tcp_max_syn_backlog for additional tuning
356 for TCP sockets. 356 for TCP sockets.
357 357
358tcp_workaround_signed_windows - BOOLEAN
359 If set, assume no receipt of a window scaling option means the
360 remote TCP is broken and treats the window as a signed quantity.
361 If unset, assume the remote TCP is not broken even if we do
362 not receive a window scaling option from them.
363 Default: 0
364
358IP Variables: 365IP Variables:
359 366
360ip_local_port_range - 2 INTEGERS 367ip_local_port_range - 2 INTEGERS