netdev - [PATCH net 2/4] ipvs: Document sysctl sync_qlen_max and sync_sock

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Date:   Fri, 17 Feb 2017 14:33:59 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     lvs-devel@...r.kernel.org
Cc:     Simon Horman <horms@...ge.net.au>, netdev@...r.kernel.org,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH net 2/4] 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@...il.com>
---
 Documentation/networking/ipvs-sysctl.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/networking/ipvs-sysctl.txt b/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)
-- 
2.5.5