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authorMax Matveev <makc@redhat.com>2011-06-19 22:08:10 +0000
committerDavid S. Miller <davem@davemloft.net>2011-07-04 19:14:09 -0700
commita6e1204b82d3e8d7ba1baca35bdb595c722105eb (patch)
tree55dc5a6197d1a1e1087ebf199ae206b8751b1236 /Documentation/networking
parent4924f44b97a034dbf44c14b709b0b0907ee23f04 (diff)
Update description of net.sctp.sctp_rmem and net.sctp.sctp_wmem tunables
sctp does not use second and third ("default" and "max") values of sctp_rmem tunable. The format is the same as tcp_rmem but the meaning is different so make the documentation explicit to avoid confusion. sctp_wmem is not used at all. Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Max Matveev <makc@redhat.com> Reviewed-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/ip-sysctl.txt11
1 files changed, 9 insertions, 2 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 3dcb26cd33f6..1a6de5b52273 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -1455,10 +1455,17 @@ sctp_mem - vector of 3 INTEGERs: min, pressure, max
Default is calculated at boot time from amount of available memory.
sctp_rmem - vector of 3 INTEGERs: min, default, max
- See tcp_rmem for a description.
+ Only the first value ("min") is used, "default" and "max" are
+ ignored.
+
+ min: Minimal size of receive buffer used by SCTP socket.
+ It is guaranteed to each SCTP socket (but not association) even
+ under moderate memory pressure.
+
+ Default: 1 page
sctp_wmem - vector of 3 INTEGERs: min, default, max
- See tcp_wmem for a description.
+ Currently this tunable has no effect.
addr_scope_policy - INTEGER
Control IPv4 address scoping - draft-stewart-tsvwg-sctp-ipv4-00