This test uses return code 2 as a hard-coded skipped state, let's use
the kselftest framework skip code variable $ksft_skip instead to make
it more readable and easier to maintain.

Signed-off-by: Po-Hsu Lin <po-hsu....@canonical.com>
---
 tools/testing/selftests/net/pmtu.sh | 64 ++++++++++++++++++-------------------
 1 file changed, 32 insertions(+), 32 deletions(-)

diff --git a/tools/testing/selftests/net/pmtu.sh 
b/tools/testing/selftests/net/pmtu.sh
index 6bbf69a..fb53987 100755
--- a/tools/testing/selftests/net/pmtu.sh
+++ b/tools/testing/selftests/net/pmtu.sh
@@ -355,7 +355,7 @@ setup_fou_or_gue() {
        encap="${3}"
 
        if [ "${outer}" = "4" ]; then
-               modprobe fou || return 2
+               modprobe fou || return $ksft_skip
                a_addr="${prefix4}.${a_r1}.1"
                b_addr="${prefix4}.${b_r1}.1"
                if [ "${inner}" = "4" ]; then
@@ -366,7 +366,7 @@ setup_fou_or_gue() {
                        ipproto="41"
                fi
        else
-               modprobe fou6 || return 2
+               modprobe fou6 || return $ksft_skip
                a_addr="${prefix6}:${a_r1}::1"
                b_addr="${prefix6}:${b_r1}::1"
                if [ "${inner}" = "4" ]; then
@@ -380,8 +380,8 @@ setup_fou_or_gue() {
                fi
        fi
 
-       run_cmd ${ns_a} ip fou add port 5555 ipproto ${ipproto} || return 2
-       run_cmd ${ns_a} ip link add ${encap}_a type ${type} ${mode} local 
${a_addr} remote ${b_addr} encap ${encap} encap-sport auto encap-dport 5556 || 
return 2
+       run_cmd ${ns_a} ip fou add port 5555 ipproto ${ipproto} || return 
$ksft_skip
+       run_cmd ${ns_a} ip link add ${encap}_a type ${type} ${mode} local 
${a_addr} remote ${b_addr} encap ${encap} encap-sport auto encap-dport 5556 || 
return $ksft_skip
 
        run_cmd ${ns_b} ip fou add port 5556 ipproto ${ipproto}
        run_cmd ${ns_b} ip link add ${encap}_b type ${type} ${mode} local 
${b_addr} remote ${a_addr} encap ${encap} encap-sport auto encap-dport 5555
@@ -455,7 +455,7 @@ setup_ipvX_over_ipvY() {
                fi
        fi
 
-       run_cmd ${ns_a} ip link add ip_a type ${type} local ${a_addr} remote 
${b_addr} mode ${mode} || return 2
+       run_cmd ${ns_a} ip link add ip_a type ${type} local ${a_addr} remote 
${b_addr} mode ${mode} || return $ksft_skip
        run_cmd ${ns_b} ip link add ip_b type ${type} local ${b_addr} remote 
${a_addr} mode ${mode}
 
        run_cmd ${ns_a} ip link set ip_a up
@@ -713,7 +713,7 @@ setup_routing() {
 }
 
 setup_bridge() {
-       run_cmd ${ns_a} ip link add br0 type bridge || return 2
+       run_cmd ${ns_a} ip link add br0 type bridge || return $ksft_skip
        run_cmd ${ns_a} ip link set br0 up
 
        run_cmd ${ns_c} ip link add veth_C-A type veth peer name veth_A-C
@@ -765,7 +765,7 @@ setup_ovs_vxlan6() {
 }
 
 setup_ovs_bridge() {
-       run_cmd ovs-vsctl add-br ovs_br0 || return 2
+       run_cmd ovs-vsctl add-br ovs_br0 || return $ksft_skip
        run_cmd ip link set ovs_br0 up
 
        run_cmd ${ns_c} ip link add veth_C-A type veth peer name veth_A-C
@@ -887,7 +887,7 @@ check_pmtu_value() {
 test_pmtu_ipvX() {
        family=${1}
 
-       setup namespaces routing || return 2
+       setup namespaces routing || return $ksft_skip
        trace "${ns_a}"  veth_A-R1    "${ns_r1}" veth_R1-A \
              "${ns_r1}" veth_R1-B    "${ns_b}"  veth_B-R1 \
              "${ns_a}"  veth_A-R2    "${ns_r2}" veth_R2-A \
@@ -985,11 +985,11 @@ test_pmtu_ipvX_over_vxlanY_or_geneveY_exception() {
        ll_mtu=4000
 
        if [ ${outer_family} -eq 4 ]; then
-               setup namespaces routing ${type}4 || return 2
+               setup namespaces routing ${type}4 || return $ksft_skip
                #                      IPv4 header   UDP header   VXLAN/GENEVE 
header   Ethernet header
                exp_mtu=$((${ll_mtu} - 20          - 8          - 8             
      - 14))
        else
-               setup namespaces routing ${type}6 || return 2
+               setup namespaces routing ${type}6 || return $ksft_skip
                #                      IPv6 header   UDP header   VXLAN/GENEVE 
header   Ethernet header
                exp_mtu=$((${ll_mtu} - 40          - 8          - 8             
      - 14))
        fi
@@ -1060,11 +1060,11 @@ 
test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception() {
        ll_mtu=4000
 
        if [ ${outer_family} -eq 4 ]; then
-               setup namespaces routing bridge bridged_${type}4 || return 2
+               setup namespaces routing bridge bridged_${type}4 || return 
$ksft_skip
                #                      IPv4 header   UDP header   VXLAN/GENEVE 
header   Ethernet header
                exp_mtu=$((${ll_mtu} - 20          - 8          - 8             
      - 14))
        else
-               setup namespaces routing bridge bridged_${type}6 || return 2
+               setup namespaces routing bridge bridged_${type}6 || return 
$ksft_skip
                #                      IPv6 header   UDP header   VXLAN/GENEVE 
header   Ethernet header
                exp_mtu=$((${ll_mtu} - 40          - 8          - 8             
      - 14))
        fi
@@ -1144,11 +1144,11 @@ test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception() {
        ll_mtu=4000
 
        if [ ${outer_family} -eq 4 ]; then
-               setup namespaces routing ovs_bridge ovs_${type}4 || return 2
+               setup namespaces routing ovs_bridge ovs_${type}4 || return 
$ksft_skip
                #                      IPv4 header   UDP header   VXLAN/GENEVE 
header   Ethernet header
                exp_mtu=$((${ll_mtu} - 20          - 8          - 8             
      - 14))
        else
-               setup namespaces routing ovs_bridge ovs_${type}6 || return 2
+               setup namespaces routing ovs_bridge ovs_${type}6 || return 
$ksft_skip
                #                      IPv6 header   UDP header   VXLAN/GENEVE 
header   Ethernet header
                exp_mtu=$((${ll_mtu} - 40          - 8          - 8             
      - 14))
        fi
@@ -1230,7 +1230,7 @@ test_pmtu_ipvX_over_fouY_or_gueY() {
        encap=${3}
        ll_mtu=4000
 
-       setup namespaces routing ${encap}${outer_family}${inner_family} || 
return 2
+       setup namespaces routing ${encap}${outer_family}${inner_family} || 
return $ksft_skip
        trace "${ns_a}" ${encap}_a   "${ns_b}"  ${encap}_b \
              "${ns_a}" veth_A-R1    "${ns_r1}" veth_R1-A \
              "${ns_b}" veth_B-R1    "${ns_r1}" veth_R1-B
@@ -1309,7 +1309,7 @@ test_pmtu_ipvX_over_ipvY_exception() {
        outer=${2}
        ll_mtu=4000
 
-       setup namespaces routing ip${inner}ip${outer} || return 2
+       setup namespaces routing ip${inner}ip${outer} || return $ksft_skip
 
        trace "${ns_a}" ip_a         "${ns_b}"  ip_b  \
              "${ns_a}" veth_A-R1    "${ns_r1}" veth_R1-A \
@@ -1363,7 +1363,7 @@ test_pmtu_ipv6_ipv6_exception() {
 }
 
 test_pmtu_vti4_exception() {
-       setup namespaces veth vti4 xfrm4 || return 2
+       setup namespaces veth vti4 xfrm4 || return $ksft_skip
        trace "${ns_a}" veth_a    "${ns_b}" veth_b \
              "${ns_a}" vti4_a    "${ns_b}" vti4_b
 
@@ -1393,7 +1393,7 @@ test_pmtu_vti4_exception() {
 }
 
 test_pmtu_vti6_exception() {
-       setup namespaces veth vti6 xfrm6 || return 2
+       setup namespaces veth vti6 xfrm6 || return $ksft_skip
        trace "${ns_a}" veth_a    "${ns_b}" veth_b \
              "${ns_a}" vti6_a    "${ns_b}" vti6_b
        fail=0
@@ -1423,7 +1423,7 @@ test_pmtu_vti6_exception() {
 }
 
 test_pmtu_vti4_default_mtu() {
-       setup namespaces veth vti4 || return 2
+       setup namespaces veth vti4 || return $ksft_skip
 
        # Check that MTU of vti device is MTU of veth minus IPv4 header length
        veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
@@ -1435,7 +1435,7 @@ test_pmtu_vti4_default_mtu() {
 }
 
 test_pmtu_vti6_default_mtu() {
-       setup namespaces veth vti6 || return 2
+       setup namespaces veth vti6 || return $ksft_skip
 
        # Check that MTU of vti device is MTU of veth minus IPv6 header length
        veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
@@ -1447,10 +1447,10 @@ test_pmtu_vti6_default_mtu() {
 }
 
 test_pmtu_vti4_link_add_mtu() {
-       setup namespaces || return 2
+       setup namespaces || return $ksft_skip
 
        run_cmd ${ns_a} ip link add vti4_a type vti local ${veth4_a_addr} 
remote ${veth4_b_addr} key 10
-       [ $? -ne 0 ] && err "  vti not supported" && return 2
+       [ $? -ne 0 ] && err "  vti not supported" && return $ksft_skip
        run_cmd ${ns_a} ip link del vti4_a
 
        fail=0
@@ -1485,10 +1485,10 @@ test_pmtu_vti4_link_add_mtu() {
 }
 
 test_pmtu_vti6_link_add_mtu() {
-       setup namespaces || return 2
+       setup namespaces || return $ksft_skip
 
        run_cmd ${ns_a} ip link add vti6_a type vti6 local ${veth6_a_addr} 
remote ${veth6_b_addr} key 10
-       [ $? -ne 0 ] && err "  vti6 not supported" && return 2
+       [ $? -ne 0 ] && err "  vti6 not supported" && return $ksft_skip
        run_cmd ${ns_a} ip link del vti6_a
 
        fail=0
@@ -1523,10 +1523,10 @@ test_pmtu_vti6_link_add_mtu() {
 }
 
 test_pmtu_vti6_link_change_mtu() {
-       setup namespaces || return 2
+       setup namespaces || return $ksft_skip
 
        run_cmd ${ns_a} ip link add dummy0 mtu 1500 type dummy
-       [ $? -ne 0 ] && err "  dummy not supported" && return 2
+       [ $? -ne 0 ] && err "  dummy not supported" && return $ksft_skip
        run_cmd ${ns_a} ip link add dummy1 mtu 3000 type dummy
        run_cmd ${ns_a} ip link set dummy0 up
        run_cmd ${ns_a} ip link set dummy1 up
@@ -1579,10 +1579,10 @@ test_cleanup_vxlanX_exception() {
        encap="vxlan"
        ll_mtu=4000
 
-       check_command taskset || return 2
+       check_command taskset || return $ksft_skip
        cpu_list=$(grep -m 2 processor /proc/cpuinfo | cut -d ' ' -f 2)
 
-       setup namespaces routing ${encap}${outer} || return 2
+       setup namespaces routing ${encap}${outer} || return $ksft_skip
        trace "${ns_a}" ${encap}_a   "${ns_b}"  ${encap}_b \
              "${ns_a}" veth_A-R1    "${ns_r1}" veth_R1-A \
              "${ns_b}" veth_B-R1    "${ns_r1}" veth_R1-B
@@ -1644,7 +1644,7 @@ run_test() {
                fi
                err_flush
                exit 1
-       elif [ $ret -eq 2 ]; then
+       elif [ $ret -eq $ksft_skip ]; then
                printf "TEST: %-60s  [SKIP]\n" "${tdesc}"
                err_flush
        fi
@@ -1667,7 +1667,7 @@ run_test_nh() {
 }
 
 test_list_flush_ipv4_exception() {
-       setup namespaces routing || return 2
+       setup namespaces routing || return $ksft_skip
        trace "${ns_a}"  veth_A-R1    "${ns_r1}" veth_R1-A \
              "${ns_r1}" veth_R1-B    "${ns_b}"  veth_B-R1 \
              "${ns_a}"  veth_A-R2    "${ns_r2}" veth_R2-A \
@@ -1721,7 +1721,7 @@ test_list_flush_ipv4_exception() {
 }
 
 test_list_flush_ipv6_exception() {
-       setup namespaces routing || return 2
+       setup namespaces routing || return $ksft_skip
        trace "${ns_a}"  veth_A-R1    "${ns_r1}" veth_R1-A \
              "${ns_r1}" veth_R1-B    "${ns_b}"  veth_B-R1 \
              "${ns_a}"  veth_A-R2    "${ns_r2}" veth_R2-A \
@@ -1840,7 +1840,7 @@ for t in ${tests}; do
        if [ $run_this -eq 1 ]; then
                run_test "${name}" "${desc}"
                # if test was skipped no need to retry with nexthop objects
-               [ $? -eq 2 ] && rerun_nh=0
+               [ $? -eq $ksft_skip ] && rerun_nh=0
 
                if [ "${rerun_nh}" = "1" ]; then
                        run_test_nh "${name}" "${desc}"
-- 
2.7.4

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