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