From d3cec5ca299602a9ec0667cd224730178e5d2971 Mon Sep 17 00:00:00 2001 From: Lahav Schlesinger Date: Wed, 18 Aug 2021 08:52:12 +0000 Subject: [PATCH] selftests: vrf: Add test for SNAT over VRF Commit 09e856d54bda ("vrf: Reset skb conntrack connection on VRF rcv") fixes the "reverse-DNAT" of an SNAT-ed packet over a VRF. This patch adds a test for this scenario. Signed-off-by: Lahav Schlesinger Signed-off-by: David S. Miller --- tools/testing/selftests/net/fcnal-test.sh | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh index a8ad928..162e5f1 100755 --- a/tools/testing/selftests/net/fcnal-test.sh +++ b/tools/testing/selftests/net/fcnal-test.sh @@ -3879,6 +3879,32 @@ use_case_ping_lla_multi() log_test_addr ${MCAST}%${NSC_DEV} $? 0 "Post cycle ${NSA} ${NSA_DEV2}, ping out ns-C" } +# Perform IPv{4,6} SNAT on ns-A, and verify TCP connection is successfully +# established with ns-B. +use_case_snat_on_vrf() +{ + setup "yes" + + local port="12345" + + run_cmd iptables -t nat -A POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP} -o ${VRF} + run_cmd ip6tables -t nat -A POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP6} -o ${VRF} + + run_cmd_nsb nettest -s -l ${NSB_IP} -p ${port} & + sleep 1 + run_cmd nettest -d ${VRF} -r ${NSB_IP} -p ${port} + log_test $? 0 "IPv4 TCP connection over VRF with SNAT" + + run_cmd_nsb nettest -6 -s -l ${NSB_IP6} -p ${port} & + sleep 1 + run_cmd nettest -6 -d ${VRF} -r ${NSB_IP6} -p ${port} + log_test $? 0 "IPv6 TCP connection over VRF with SNAT" + + # Cleanup + run_cmd iptables -t nat -D POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP} -o ${VRF} + run_cmd ip6tables -t nat -D POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP6} -o ${VRF} +} + use_cases() { log_section "Use cases" @@ -3886,6 +3912,8 @@ use_cases() use_case_br log_subsection "Ping LLA with multiple interfaces" use_case_ping_lla_multi + log_subsection "SNAT on VRF" + use_case_snat_on_vrf } ################################################################################ -- 2.7.4