[PATCHv2 net-next 4/4] ipvs: Document sysctl pmtu_disc

To: lvs-devel@xxxxxxxxxxxxxxx
Subject: [PATCHv2 net-next 4/4] ipvs: Document sysctl pmtu_disc
Cc: netdev@xxxxxxxxxxxxxxx, Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>, Julian Anastasov <ja@xxxxxx>, Hangbin Liu <liuhangbin@xxxxxxxxx>
From: Hangbin Liu <liuhangbin@xxxxxxxxx>
Date: Mon, 20 Feb 2017 16:31:38 +0800
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>
 Documentation/networking/ipvs-sysctl.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/networking/ipvs-sysctl.txt 
index a6feecd..0568986 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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