linux-kernel - [PATCH] selftests: net: ip_defrag: modprobe missing nf_defrag

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Date:   Tue, 14 Jul 2020 14:40:32 +0200
From:   Paolo Pisati <paolo.pisati@...onical.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc:     netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] selftests: net: ip_defrag: modprobe missing nf_defrag_ipv6 support

Fix ip_defrag.sh when CONFIG_NF_DEFRAG_IPV6=m:

$ sudo ./ip_defrag.sh
+ set -e
+ mktemp -u XXXXXX
+ readonly NETNS=ns-rGlXcw
+ trap cleanup EXIT
+ setup
+ ip netns add ns-rGlXcw
+ ip -netns ns-rGlXcw link set lo up
+ ip netns exec ns-rGlXcw sysctl -w net.ipv4.ipfrag_high_thresh=9000000
+ ip netns exec ns-rGlXcw sysctl -w net.ipv4.ipfrag_low_thresh=7000000
+ ip netns exec ns-rGlXcw sysctl -w net.ipv4.ipfrag_time=1
+ ip netns exec ns-rGlXcw sysctl -w net.ipv6.ip6frag_high_thresh=9000000
+ ip netns exec ns-rGlXcw sysctl -w net.ipv6.ip6frag_low_thresh=7000000
+ ip netns exec ns-rGlXcw sysctl -w net.ipv6.ip6frag_time=1
+ ip netns exec ns-rGlXcw sysctl -w net.netfilter.nf_conntrack_frag6_high_thresh=9000000
+ cleanup
+ ip netns del ns-rGlXcw

$ ls -la /proc/sys/net/netfilter/nf_conntrack_frag6_high_thresh
ls: cannot access '/proc/sys/net/netfilter/nf_conntrack_frag6_high_thresh': No such file or directory

$ sudo modprobe nf_defrag_ipv6
$ ls -la /proc/sys/net/netfilter/nf_conntrack_frag6_high_thresh
-rw-r--r-- 1 root root 0 Jul 14 12:34 /proc/sys/net/netfilter/nf_conntrack_frag6_high_thresh

Signed-off-by: Paolo Pisati <paolo.pisati@...onical.com>
---
 tools/testing/selftests/net/ip_defrag.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/net/ip_defrag.sh b/tools/testing/selftests/net/ip_defrag.sh
index 15d3489ecd9c..6919afe47e0a 100755
--- a/tools/testing/selftests/net/ip_defrag.sh
+++ b/tools/testing/selftests/net/ip_defrag.sh
@@ -3,6 +3,8 @@
 #
 # Run a couple of IP defragmentation tests.
 
+modprobe -q nf_defrag_ipv6
+
 set +x
 set -e
 
-- 
2.25.1