[PATCH 5/5] ipvs: Document sysctl pmtu_disc

To: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Subject: [PATCH 5/5] ipvs: Document sysctl pmtu_disc
Cc: lvs-devel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, Wensong Zhang <wensong@xxxxxxxxxxxx>, Julian Anastasov <ja@xxxxxx>, Hangbin Liu <liuhangbin@xxxxxxxxx>, Simon Horman <horms@xxxxxxxxxxxx>
From: Simon Horman <horms@xxxxxxxxxxxx>
Date: Thu, 16 Mar 2017 13:43:15 +0100
From: Hangbin Liu <liuhangbin@xxxxxxxxx>

Document sysctl pmtu_disc based on commit 3654e61137db ("ipvs: add
pmtu_disc option to disable IP DF for TUN packets").

Signed-off-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
 Documentation/networking/ipvs-sysctl.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/networking/ipvs-sysctl.txt 
index a6feecd467cd..056898685d40 100644
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -175,6 +175,14 @@ nat_icmp_send - BOOLEAN
         for VS/NAT when the load balancer receives packets from real
         servers but the connection entries don't exist.
+pmtu_disc - BOOLEAN
+       0 - disabled
+       not 0 - enabled (default)
+       By default, reject with FRAG_NEEDED all DF packets that exceed
+       the PMTU, irrespective of the forwarding method. For TUN method
+       the flag can be disabled to fragment such packets.
 secure_tcp - INTEGER
         0  - disabled (default)

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