ipvs: Document sysctl sync_qlen_max and sync_sock_size
Document sysctl sync_qlen_max and sync_sock_size based on
commit 1c003b1580e2 ("ipvs: wakeup master thread").
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt
index 7acaaa6..159d70b 100644
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -217,6 +217,20 @@
to protect against loss of sync messages. The range of the
sync_retries is from 0 to 3.
+sync_qlen_max - UNSIGNED LONG
+
+ Hard limit for queued sync messages that are not sent yet. It
+ defaults to 1/32 of the memory pages but actually represents
+ number of messages. It will protect us from allocating large
+ parts of memory when the sending rate is lower than the queuing
+ rate.
+
+sync_sock_size - INTEGER
+ default 0
+
+ Configuration of SNDBUF (master) or RCVBUF (slave) socket limit.
+ Default value is 0 (preserve system defaults).
+
snat_reroute - BOOLEAN
0 - disabled
not 0 - enabled (default)
