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| author | Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> | 2021-06-22 17:05:02 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-22 19:52:39 +0200 |
| commit | e46905641316d7ffed867651310f176b1434ef69 (patch) | |
| tree | 465097e4754b0eb3d25b70094c554d5cdde4aed9 /tools | |
| parent | tc-testing: add support for sending various scapy packets (diff) | |
| download | linux-e46905641316d7ffed867651310f176b1434ef69.tar.xz linux-e46905641316d7ffed867651310f176b1434ef69.zip | |
tc-testing: add test for ct DNAT tuple collision
When this test fails, /proc/net/nf_conntrack gets only 1 entry:
ipv4 2 tcp 6 119 SYN_SENT src=10.0.0.10 dst=10.0.0.10 sport=5000 dport=10 [UNREPLIED] src=20.0.0.1 dst=10.0.0.10 sport=10 dport=5000 mark=0 secctx=system_u:object_r:unlabeled_t:s0 zone=0 use=2
When it works, it gets 2 entries:
ipv4 2 tcp 6 119 SYN_SENT src=10.0.0.10 dst=10.0.0.20 sport=5000 dport=10 [UNREPLIED] src=20.0.0.1 dst=10.0.0.10 sport=10 dport=58203 mark=0 secctx=system_u:object_r:unlabeled_t:s0 zone=0 use=2
ipv4 2 tcp 6 119 SYN_SENT src=10.0.0.10 dst=10.0.0.10 sport=5000 dport=10 [UNREPLIED] src=20.0.0.1 dst=10.0.0.10 sport=10 dport=5000 mark=0 secctx=system_u:object_r:unlabeled_t:s0 zone=0 use=2
The missing entry is because the 2nd packet hits a tuple collusion and the
conntrack entry doesn't get allocated.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/tc-testing/tc-tests/actions/ct.json | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tools/testing/selftests/tc-testing/tc-tests/actions/ct.json b/tools/testing/selftests/tc-testing/tc-tests/actions/ct.json index 4202e95e27b9..bd843ab00a58 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/actions/ct.json +++ b/tools/testing/selftests/tc-testing/tc-tests/actions/ct.json @@ -406,5 +406,50 @@ "teardown": [ "$TC actions flush action ct" ] + }, + { + "id": "3992", + "name": "Add ct action triggering DNAT tuple conflict", + "category": [ + "actions", + "ct", + "scapy" + ], + "plugins": { + "requires": [ + "nsPlugin", + "scapyPlugin" + ] + }, + "setup": [ + [ + "$TC qdisc del dev $DEV1 ingress", + 0, + 1, + 2, + 255 + ], + "$TC qdisc add dev $DEV1 ingress" + ], + "cmdUnderTest": "$TC filter add dev $DEV1 ingress protocol ip prio 1 flower ct_state -trk action ct commit nat dst addr 20.0.0.1 port 10 pipe action drop", + "scapy": [ + { + "iface": "$DEV0", + "count": 1, + "packet": "Ether(type=0x800)/IP(src='10.0.0.10',dst='10.0.0.10')/TCP(sport=5000,dport=10)" + }, + { + "iface": "$DEV0", + "count": 1, + "packet": "Ether(type=0x800)/IP(src='10.0.0.10',dst='10.0.0.20')/TCP(sport=5000,dport=10)" + } + ], + "expExitCode": "0", + "verifyCmd": "cat /proc/net/nf_conntrack", + "matchPattern": "dst=10.0.0.20", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DEV1 ingress" + ] } ] |