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selftests: vrf: Add test for SNAT over VRF 

Commit 09e856d54b ("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 <lschlesinger@drivenets.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lahav Schlesinger 2021-08-18 08:52:12 +00:00 committed by David S. Miller
parent 41467d2ff4
commit d3cec5ca29
1 changed files with 28 additions and 0 deletions
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28
tools/testing/selftests/net/fcnal-test.sh
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@ -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" 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() use_cases()
{ {
log_section "Use cases" log_section "Use cases"
@ -3886,6 +3912,8 @@ use_cases()
use_case_br use_case_br
log_subsection "Ping LLA with multiple interfaces" log_subsection "Ping LLA with multiple interfaces"
use_case_ping_lla_multi use_case_ping_lla_multi
log_subsection "SNAT on VRF"
use_case_snat_on_vrf
} }
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