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From: Jianlin Lv <Jianlin.Lv@arm.com>
To: bpf@vger.kernel.org
Cc: davem@davemloft.net, kuba@kernel.org, ast@kernel.org,
	daniel@iogearbox.net, yhs@fb.com, Song.Zhu@arm.com,
	Jianlin.Lv@arm.com, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org
Subject: [PATCH bpf-next] bpf: fix load XDP program error in test_xdp_vlan
Date: Wed, 12 Aug 2020 22:03:22 +0800	[thread overview]
Message-ID: <20200812140322.132844-1-Jianlin.Lv@arm.com> (raw)

test_xdp_vlan.sh reports the error as below:

$ sudo ./test_xdp_vlan_mode_native.sh
+ '[' -z xdp_vlan_mode_native ']'
+ XDP_MODE=xdpgeneric
……
+ export XDP_PROG=xdp_vlan_remove_outer2
+ XDP_PROG=xdp_vlan_remove_outer2
+ ip netns exec ns1 ip link set veth1 xdpdrv off
Error: XDP program already attached.

ip will throw an error in case a XDP program is already attached to the
networking interface, to prevent it from being overridden by accident.
In order to replace the currently running XDP program with a new one,
the -force option must be used.

Signed-off-by: Jianlin Lv <Jianlin.Lv@arm.com>
---
 tools/testing/selftests/bpf/test_xdp_vlan.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_xdp_vlan.sh b/tools/testing/selftests/bpf/test_xdp_vlan.sh
index bb8b0da91686..034e603aeb50 100755
--- a/tools/testing/selftests/bpf/test_xdp_vlan.sh
+++ b/tools/testing/selftests/bpf/test_xdp_vlan.sh
@@ -220,7 +220,7 @@ ip netns exec ns1 ping -i 0.2 -W 2 -c 2 $IPADDR2
 # ETH_P_8021Q indication, and this cause overwriting of our changes.
 #
 export XDP_PROG=xdp_vlan_remove_outer2
-ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE off
+ip netns exec ns1 ip -force link set $DEVNS1 $XDP_MODE off
 ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE object $FILE section $XDP_PROG
 
 # Now the namespaces should still be able reach each-other, test with ping:
-- 
2.17.1


             reply	other threads:[~2020-08-12 14:03 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-12 14:03 Jianlin Lv [this message]
2020-08-12 20:40 ` [PATCH bpf-next] bpf: fix load XDP program error in test_xdp_vlan sdf

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