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-rw-r--r--Documentation/networking/ip-sysctl.rst15
1 files changed, 9 insertions, 6 deletions
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst
index b3a534ed0e7c..d7a1bf1a55b5 100644
--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst
@@ -1052,11 +1052,7 @@ udp_rmem_min - INTEGER
Default: 4K
udp_wmem_min - INTEGER
- Minimal size of send buffer used by UDP sockets in moderation.
- Each UDP socket is able to use the size for sending data, even if
- total pages of UDP sockets exceed udp_mem pressure. The unit is byte.
-
- Default: 4K
+ UDP does not have tx memory accounting and this tunable has no effect.
RAW variables
=============
@@ -2870,7 +2866,14 @@ sctp_rmem - vector of 3 INTEGERs: min, default, max
Default: 4K
sctp_wmem - vector of 3 INTEGERs: min, default, max
- Currently this tunable has no effect.
+ Only the first value ("min") is used, "default" and "max" are
+ ignored.
+
+ min: Minimum size of send buffer that can be used by SCTP sockets.
+ It is guaranteed to each SCTP socket (but not association) even
+ under moderate memory pressure.
+
+ Default: 4K
addr_scope_policy - INTEGER
Control IPv4 address scoping - draft-stewart-tsvwg-sctp-ipv4-00