Merge branch 'forwarding-selftest-fixes'

David Ahern says:

====================
selftests: forwarding: misc bug fixes and enhancements

Bug fixes and an enhancement for the recent forwarding tests:
- only check tc version on tc tests
- handle multipath tests failing with 0 packet count
- fix ping command for IPv6 on Debian jessie
- improve summary of multipath tests

v2
- add CHECK_TC to bridge_vlan_aware.sh (Ido)
- dropped patch 2; always check for mz given its use
- fixed commit message for the last patch (Multipath: was dropped)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh

@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: GPL-2.0
 
 NUM_NETIFS=4
+CHECK_TC="yes"
 source lib.sh
 
 h1_create()

tools/testing/selftests/net/forwarding/lib.sh

@@ -19,26 +19,33 @@ fi
 ##############################################################################
 # Sanity checks
 
+check_tc_version()
+{
+	tc -j &> /dev/null
+	if [[ $? -ne 0 ]]; then
+		echo "SKIP: iproute2 too old; tc is missing JSON support"
+		exit 1
+	fi
+
+	tc filter help 2>&1 | grep block &> /dev/null
+	if [[ $? -ne 0 ]]; then
+		echo "SKIP: iproute2 too old; tc is missing shared block support"
+		exit 1
+	fi
+}
+
 if [[ "$(id -u)" -ne 0 ]]; then
 	echo "SKIP: need root privileges"
 	exit 0
 fi
 
-tc -j &> /dev/null
-if [[ $? -ne 0 ]]; then
-	echo "SKIP: iproute2 too old, missing JSON support"
-	exit 0
-fi
-
-tc filter help 2>&1 | grep block &> /dev/null
-if [[ $? -ne 0 ]]; then
-	echo "SKIP: iproute2 too old, missing shared block support"
-	exit 0
+if [[ "$CHECK_TC" = "yes" ]]; then
+	check_tc_version
 fi
 
 if [[ ! -x "$(command -v jq)" ]]; then
 	echo "SKIP: jq not installed"
-	exit 0
+	exit 1
 fi
 
 if [[ ! -x "$(command -v $MZ)" ]]; then

tools/testing/selftests/net/forwarding/router_multipath.sh

@@ -160,14 +160,22 @@ router2_destroy()
 
 multipath_eval()
 {
-       local weight_rp12=$1
-       local weight_rp13=$2
-       local packets_rp12=$3
-       local packets_rp13=$4
+       local desc="$1"
+       local weight_rp12=$2
+       local weight_rp13=$3
+       local packets_rp12=$4
+       local packets_rp13=$5
        local weights_ratio packets_ratio diff
 
        RET=0
 
+       if [[ "$packets_rp12" -eq "0" || "$packets_rp13" -eq "0" ]]; then
+              check_err 1 "Packet difference is 0"
+              log_test "Multipath"
+              log_info "Expected ratio $weights_ratio"
+              return
+       fi
+
        if [[ "$weight_rp12" -gt "$weight_rp13" ]]; then
                weights_ratio=$(echo "scale=2; $weight_rp12 / $weight_rp13" \
 		       | bc -l)
@@ -185,14 +193,15 @@ multipath_eval()
 
        test "$(echo "$diff / $weights_ratio > 0.1" | bc -l)" -eq 0
        check_err $? "Too large discrepancy between expected and measured ratios"
-       log_test "Multipath"
+       log_test "$desc"
        log_info "Expected ratio $weights_ratio Measured ratio $packets_ratio"
 }
 
 multipath4_test()
 {
-       local weight_rp12=$1
-       local weight_rp13=$2
+       local desc="$1"
+       local weight_rp12=$2
+       local weight_rp13=$3
        local t0_rp12 t0_rp13 t1_rp12 t1_rp13
        local packets_rp12 packets_rp13
        local hash_policy
@@ -217,7 +226,7 @@ multipath4_test()
 
        let "packets_rp12 = $t1_rp12 - $t0_rp12"
        let "packets_rp13 = $t1_rp13 - $t0_rp13"
-       multipath_eval $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
+       multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
 
        # Restore settings.
        ip route replace 198.51.100.0/24 vrf vrf-r1 \
@@ -228,8 +237,9 @@ multipath4_test()
 
 multipath6_test()
 {
-       local weight_rp12=$1
-       local weight_rp13=$2
+       local desc="$1"
+       local weight_rp12=$2
+       local weight_rp13=$3
        local t0_rp12 t0_rp13 t1_rp12 t1_rp13
        local packets_rp12 packets_rp13
 
@@ -242,7 +252,7 @@ multipath6_test()
 
        # Generate 16384 echo requests, each with a random flow label.
        for _ in $(seq 1 16384); do
-	       ip vrf exec vrf-h1 ping 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
+	       ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
        done
 
        t1_rp12=$(link_stats_tx_packets_get $rp12)
@@ -250,7 +260,7 @@ multipath6_test()
 
        let "packets_rp12 = $t1_rp12 - $t0_rp12"
        let "packets_rp13 = $t1_rp13 - $t0_rp13"
-       multipath_eval $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
+       multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
 
        ip route replace 2001:db8:2::/64 vrf vrf-r1 \
 	       nexthop via fe80:2::22 dev $rp12 \
@@ -260,14 +270,14 @@ multipath6_test()
 multipath_test()
 {
 	log_info "Running IPv4 multipath tests"
-	multipath4_test 1 1
-	multipath4_test 2 1
-	multipath4_test 11 45
+	multipath4_test "ECMP" 1 1
+	multipath4_test "Weighted MP 2:1" 2 1
+	multipath4_test "Weighted MP 11:45" 11 45
 
 	log_info "Running IPv6 multipath tests"
-	multipath6_test 1 1
-	multipath6_test 2 1
-	multipath6_test 11 45
+	multipath6_test "ECMP" 1 1
+	multipath6_test "Weighted MP 2:1" 2 1
+	multipath6_test "Weighted MP 11:45" 11 45
 }
 
 setup_prepare()

tools/testing/selftests/net/forwarding/tc_actions.sh

@@ -2,8 +2,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
 NUM_NETIFS=4
-source lib.sh
 source tc_common.sh
+source lib.sh
 
 tcflags="skip_hw"
 

tools/testing/selftests/net/forwarding/tc_chains.sh

@@ -2,8 +2,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
 NUM_NETIFS=2
-source lib.sh
 source tc_common.sh
+source lib.sh
 
 tcflags="skip_hw"
 

tools/testing/selftests/net/forwarding/tc_common.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+CHECK_TC="yes"
+
 tc_check_packets()
 {
 	local id=$1

tools/testing/selftests/net/forwarding/tc_flower.sh

@@ -2,8 +2,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
 NUM_NETIFS=2
-source lib.sh
 source tc_common.sh
+source lib.sh
 
 tcflags="skip_hw"
 

tools/testing/selftests/net/forwarding/tc_shblocks.sh

@@ -2,8 +2,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
 NUM_NETIFS=4
-source lib.sh
 source tc_common.sh
+source lib.sh
 
 tcflags="skip_hw"