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Message-Id: <20230125211350.113855-1-andrei.gherzan@canonical.com>
Date:   Wed, 25 Jan 2023 21:13:49 +0000
From:   Andrei Gherzan <andrei.gherzan@...onical.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Shuah Khan <shuah@...nel.org>
Cc:     Andrei Gherzan <andrei.gherzan@...onical.com>,
        netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH v2 1/2] selftests: net: Fix missing nat6to4.o when running udpgro_frglist.sh

The udpgro_frglist.sh uses nat6to4.o which is tested for existence in
bpf/nat6to4.o (relative to the script). This is where the object is
compiled. Even so, the script attempts to use it as part of tc with a
different path (../bpf/nat6to4.o). As a consequence, this fails the script:

Error opening object ../bpf/nat6to4.o: No such file or directory
Cannot initialize ELF context!
Unable to load program

This change refactors these references to use a variable for consistency
and also reformats two long lines.

Signed-off-by: Andrei Gherzan <andrei.gherzan@...onical.com>
---
 tools/testing/selftests/net/udpgro_frglist.sh | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/net/udpgro_frglist.sh b/tools/testing/selftests/net/udpgro_frglist.sh
index c9c4b9d65839..1fdf2d53944d 100755
--- a/tools/testing/selftests/net/udpgro_frglist.sh
+++ b/tools/testing/selftests/net/udpgro_frglist.sh
@@ -6,6 +6,7 @@
 readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"
 
 BPF_FILE="../bpf/xdp_dummy.bpf.o"
+BPF_NAT6TO4_FILE="./bpf/nat6to4.o"
 
 cleanup() {
 	local -r jobs="$(jobs -p)"
@@ -40,8 +41,12 @@ run_one() {
 
 	ip -n "${PEER_NS}" link set veth1 xdp object ${BPF_FILE} section xdp
 	tc -n "${PEER_NS}" qdisc add dev veth1 clsact
-	tc -n "${PEER_NS}" filter add dev veth1 ingress prio 4 protocol ipv6 bpf object-file ../bpf/nat6to4.o section schedcls/ingress6/nat_6  direct-action
-	tc -n "${PEER_NS}" filter add dev veth1 egress prio 4 protocol ip bpf object-file ../bpf/nat6to4.o section schedcls/egress4/snat4 direct-action
+	tc -n "${PEER_NS}" filter add dev veth1 ingress prio 4 protocol \
+		ipv6 bpf object-file "$BPF_NAT6TO4_FILE" section \
+		schedcls/ingress6/nat_6 direct-action
+	tc -n "${PEER_NS}" filter add dev veth1 egress prio 4 protocol \
+		ip bpf object-file "$BPF_NAT6TO4_FILE" section \
+		schedcls/egress4/snat4 direct-action
         echo ${rx_args}
 	ip netns exec "${PEER_NS}" ./udpgso_bench_rx ${rx_args} -r &
 
@@ -88,7 +93,7 @@ if [ ! -f ${BPF_FILE} ]; then
 	exit -1
 fi
 
-if [ ! -f bpf/nat6to4.o ]; then
+if [ ! -f "$BPF_NAT6TO4_FILE" ]; then
 	echo "Missing nat6to4 helper. Build bpfnat6to4.o selftest first"
 	exit -1
 fi
-- 
2.34.1

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