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From 3cfb170def0cfa4b4048ee1e153b29b460ff54f1 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Tue, 8 Mar 2016 18:35:16 +0100
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Subject: [PATCH] libnetlink: Double the dump buffer size
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1304840
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Upstream Status: iproute2.git commit 72b365e8e0fd5
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commit 72b365e8e0fd5efe1d5c05d04c25950736635cfb
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Author: Phil Sutter <phil@nwl.cc>
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Date: Fri Mar 4 19:57:28 2016 +0100
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libnetlink: Double the dump buffer size
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There have been reports about 'ip addr' printing "Message truncated" on
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systems with large numbers of VFs. Although I haven't been able to get
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my hands on hardware suitable to reproduce this, increasing the dump
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buffer has been reported to resolve the issue. For want of a better
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idea, just double the buffer size to 32k.
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Feels like this opportunistic buffer size selection is rather
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workarounding a design flaw in libnetlink or maybe even the netlink
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protocol itself.
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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---
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lib/libnetlink.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/lib/libnetlink.c b/lib/libnetlink.c
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index b2a300e..96bde59 100644
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--- a/lib/libnetlink.c
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+++ b/lib/libnetlink.c
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@@ -202,7 +202,7 @@ int rtnl_dump_filter_l(struct rtnl_handle *rth,
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.msg_iov = &iov,
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.msg_iovlen = 1,
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};
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- char buf[16384];
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+ char buf[32768];
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int dump_intr = 0;
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iov.iov_base = buf;
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--
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1.8.3.1
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