[PATCH net 2/4] ipvs: Document sysctl sync_qlen_max and sync_sock_size

To: lvs-devel@xxxxxxxxxxxxxxx
Subject: [PATCH net 2/4] ipvs: Document sysctl sync_qlen_max and sync_sock_size
Cc: Simon Horman <horms@xxxxxxxxxxxx>, netdev@xxxxxxxxxxxxxxx, Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>, Hangbin Liu <liuhangbin@xxxxxxxxx>
From: Hangbin Liu <liuhangbin@xxxxxxxxx>
Date: Fri, 17 Feb 2017 14:33:59 +0800
Document sysctl sync_qlen_max and sync_sock_size based on commit
1c003b1580e2 ("ipvs: wakeup master thread").

Signed-off-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
 Documentation/networking/ipvs-sysctl.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/networking/ipvs-sysctl.txt 
index 7acaaa6..7622ba5 100644
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -217,6 +217,19 @@ sync_retries - INTEGER
        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 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)

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