From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hangbin Liu Subject: [PATCH net 4/4] ipvs: Document sysctl pmtu_disc Date: Fri, 17 Feb 2017 14:34:01 +0800 Message-ID: <1487313241-11361-5-git-send-email-liuhangbin@gmail.com> References: <1487313241-11361-1-git-send-email-liuhangbin@gmail.com> Cc: Simon Horman , netdev@vger.kernel.org, Marcelo Ricardo Leitner , Hangbin Liu To: lvs-devel@vger.kernel.org Return-path: Received: from mail-pf0-f195.google.com ([209.85.192.195]:36709 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755649AbdBQGev (ORCPT ); Fri, 17 Feb 2017 01:34:51 -0500 In-Reply-To: <1487313241-11361-1-git-send-email-liuhangbin@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: 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 --- Documentation/networking/ipvs-sysctl.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt index e4d9235..fb65d4a 100644 --- a/Documentation/networking/ipvs-sysctl.txt +++ b/Documentation/networking/ipvs-sysctl.txt @@ -175,6 +175,15 @@ 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) + + When enabled PMTU discovery(default) and received packets larger than + the next MTU, we will send back FRAG_NEEDED message and drop the + incoming packet. But if users prefer to fragment regardless of DF bit + other than drop the packet, they can disable it. + secure_tcp - INTEGER 0 - disabled (default) -- 2.5.5