selftests: mlxsw: RED: Test RED ECN nodrop offload
Extend RED testsuite to cover the new nodrop mode of RED-ECN. This test is really similar to ECN test, diverging only in the last step, where UDP traffic should go to backlog instead of being dropped. Thus extract a common helper, ecn_test_common(), make do_ecn_test() into a relatively simple wrapper, and add another one, do_ecn_nodrop_test(). Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -389,17 +389,14 @@ check_marking()
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((pct $cond))
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((pct $cond))
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}
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}
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do_ecn_test()
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ecn_test_common()
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{
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{
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local name=$1; shift
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local vlan=$1; shift
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local vlan=$1; shift
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local limit=$1; shift
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local limit=$1; shift
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local backlog
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local backlog
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local pct
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local pct
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# Main stream.
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start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \
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$h3_mac tos=0x01
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# Build the below-the-limit backlog using UDP. We could use TCP just
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# Build the below-the-limit backlog using UDP. We could use TCP just
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# fine, but this way we get a proof that UDP is accepted when queue
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# fine, but this way we get a proof that UDP is accepted when queue
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# length is below the limit. The main stream is using TCP, and if the
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# length is below the limit. The main stream is using TCP, and if the
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@ -409,7 +406,7 @@ do_ecn_test()
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check_err $? "Could not build the requested backlog"
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check_err $? "Could not build the requested backlog"
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pct=$(check_marking $vlan "== 0")
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pct=$(check_marking $vlan "== 0")
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check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
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check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
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log_test "TC $((vlan - 10)): ECN backlog < limit"
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log_test "TC $((vlan - 10)): $name backlog < limit"
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# Now push TCP, because non-TCP traffic would be early-dropped after the
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# Now push TCP, because non-TCP traffic would be early-dropped after the
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# backlog crosses the limit, and we want to make sure that the backlog
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# backlog crosses the limit, and we want to make sure that the backlog
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@ -419,7 +416,20 @@ do_ecn_test()
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check_err $? "Could not build the requested backlog"
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check_err $? "Could not build the requested backlog"
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pct=$(check_marking $vlan ">= 95")
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pct=$(check_marking $vlan ">= 95")
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check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected >= 95."
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check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected >= 95."
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log_test "TC $((vlan - 10)): ECN backlog > limit"
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log_test "TC $((vlan - 10)): $name backlog > limit"
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}
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do_ecn_test()
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{
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local vlan=$1; shift
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local limit=$1; shift
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local name=ECN
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start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \
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$h3_mac tos=0x01
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sleep 1
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ecn_test_common "$name" $vlan $limit
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# Up there we saw that UDP gets accepted when backlog is below the
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# Up there we saw that UDP gets accepted when backlog is below the
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# limit. Now that it is above, it should all get dropped, and backlog
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# limit. Now that it is above, it should all get dropped, and backlog
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@ -427,7 +437,31 @@ do_ecn_test()
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RET=0
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RET=0
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build_backlog $vlan $((2 * limit)) udp >/dev/null
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build_backlog $vlan $((2 * limit)) udp >/dev/null
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check_fail $? "UDP traffic went into backlog instead of being early-dropped"
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check_fail $? "UDP traffic went into backlog instead of being early-dropped"
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log_test "TC $((vlan - 10)): ECN backlog > limit: UDP early-dropped"
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log_test "TC $((vlan - 10)): $name backlog > limit: UDP early-dropped"
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stop_traffic
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sleep 1
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}
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do_ecn_nodrop_test()
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{
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local vlan=$1; shift
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local limit=$1; shift
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local name="ECN nodrop"
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start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \
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$h3_mac tos=0x01
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sleep 1
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ecn_test_common "$name" $vlan $limit
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# Up there we saw that UDP gets accepted when backlog is below the
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# limit. Now that it is above, in nodrop mode, make sure it goes to
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# backlog as well.
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RET=0
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build_backlog $vlan $((2 * limit)) udp >/dev/null
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check_err $? "UDP traffic was early-dropped instead of getting into backlog"
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log_test "TC $((vlan - 10)): $name backlog > limit: UDP not dropped"
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stop_traffic
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stop_traffic
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sleep 1
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sleep 1
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@ -4,6 +4,7 @@
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ALL_TESTS="
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ALL_TESTS="
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ping_ipv4
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ping_ipv4
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ecn_test
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ecn_test
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ecn_nodrop_test
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red_test
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red_test
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mc_backlog_test
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mc_backlog_test
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"
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"
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@ -50,6 +51,16 @@ ecn_test()
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uninstall_qdisc
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uninstall_qdisc
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}
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}
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ecn_nodrop_test()
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{
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install_qdisc ecn nodrop
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do_ecn_nodrop_test 10 $BACKLOG1
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do_ecn_nodrop_test 11 $BACKLOG2
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uninstall_qdisc
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}
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red_test()
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red_test()
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{
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{
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install_qdisc
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install_qdisc
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@ -4,6 +4,7 @@
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ALL_TESTS="
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ALL_TESTS="
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ping_ipv4
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ping_ipv4
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ecn_test
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ecn_test
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ecn_nodrop_test
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red_test
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red_test
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mc_backlog_test
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mc_backlog_test
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"
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"
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@ -33,6 +34,13 @@ ecn_test()
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uninstall_qdisc
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uninstall_qdisc
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}
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}
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ecn_nodrop_test()
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{
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install_qdisc ecn nodrop
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do_ecn_nodrop_test 10 $BACKLOG
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uninstall_qdisc
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}
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red_test()
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red_test()
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{
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{
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install_qdisc
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install_qdisc
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