test: Simplify data handling for transfer tests

Many of our tests are based around performing transfers of sample data
across passt/pasta created links.  The data flow here can be a bit
hard to follow since, e.g. we create a file transfer it to the guest,
then transfer it back to the host across several different tests.
This also means that the test cases aren't independent of each other.

Because we don't have the original file available at both ends in some
cases, we compare them by generating md5sums at each end and comparing
them, which is a bit complicated.

Make a number of changes to simplify this:
  1. Pre-generate the sample data files as a test asset, rather than
     building them on the fly during the tests proper
  2. Include the sample data files in the mbuto guest image
  3. Because we have good copies of the original data available in all
     contexts, we can now simply use 'cmp' to check if the transfer
     has worked, avoiding md5sum complications.
  4. Similarly we can always use the original copy of the sample data
     on the send side of each transfer, meaning that the tests become
     more independent of each other.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

2 files changed, 114 insertions, 166 deletions

diff --git a/test/passt_in_ns/tcp b/test/passt_in_ns/tcp
index 71fe1c1..842b345 100644
--- a/test/passt_in_ns/tcp
+++ b/test/passt_in_ns/tcp
@@ -11,281 +11,246 @@
 # Copyright (c) 2021 Red Hat GmbH
 # Author: Stefano Brivio <sbrivio@redhat.com>
 
-gtools	socat ip jq md5sum cut
-htools	dd socat ip jq md5sum cut
-nstools	socat ip jq md5sum cut
+gtools	socat ip jq
+htools	socat ip jq
+nstools	socat ip jq
+
+set	TEMP_BIG __STATEDIR__/test_big.bin
+set	TEMP_SMALL __STATEDIR__/test_small.bin
+set	TEMP_NS_BIG __STATEDIR__/test_ns_big.bin
+set	TEMP_NS_SMALL __STATEDIR__/test_ns_small.bin
 
 test	TCP/IPv4: host to guest: big transfer
-set	TEMP_BIG __STATEDIR__/big.img
 guestb	socat -u TCP4-LISTEN:10001 OPEN:test_big.bin,create,trunc
-host	dd if=/dev/urandom bs=1M count=10 of=__TEMP_BIG__
 sleep	1
-host	socat -u OPEN:__TEMP_BIG__ TCP4:127.0.0.1:10001
+host	socat -u OPEN:__BASEPATH__/big.bin TCP4:127.0.0.1:10001
 guestw
-hout	MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-gout	GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
+guest	cmp test_big.bin /root/big.bin
 
 test	TCP/IPv4: host to ns: big transfer
-set	TEMP_NS_BIG __STATEDIR__/big_ns.img
 nsb	socat -u TCP4-LISTEN:10002 OPEN:__TEMP_NS_BIG__,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP_BIG__ TCP4:127.0.0.1:10002
+host	socat -u OPEN:__BASEPATH__/big.bin TCP4:127.0.0.1:10002
 nsw
-nsout	NS_MD5_BIG md5sum __TEMP_NS_BIG__ | cut -d' ' -f1
-check	[ "__NS_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_NS_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv4: guest to host: big transfer
 hostb	socat -u TCP4-LISTEN:10003 OPEN:__TEMP_BIG__,create,trunc
 gout	GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
 sleep	1
-guest	socat -u OPEN:test_big.bin TCP4:__GW__:10003
+guest	socat -u OPEN:/root/big.bin TCP4:__GW__:10003
 hostw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv4: guest to ns: big transfer
-nsb	socat -u TCP4-LISTEN:10002 OPEN:__TEMP_BIG__,create,trunc
+nsb	socat -u TCP4-LISTEN:10002 OPEN:__TEMP_NS_BIG__,create,trunc
 sleep	1
-guest	socat -u OPEN:test_big.bin TCP4:__GW__:10002
+guest	socat -u OPEN:/root/big.bin TCP4:__GW__:10002
 nsw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_NS_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv4: ns to host (spliced): big transfer
 hostb	socat -u TCP4-LISTEN:10003 OPEN:__TEMP_BIG__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP4:127.0.0.1:10003
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP4:127.0.0.1:10003
 hostw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv4: ns to host (via tap): big transfer
 hostb	socat -u TCP4-LISTEN:10003 OPEN:__TEMP_BIG__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP4:__GW__:10003
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP4:__GW__:10003
 hostw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv4: ns to guest (using loopback address): big transfer
 guestb	socat -u TCP4-LISTEN:10001 OPEN:test_big.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP4:127.0.0.1:10001
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP4:127.0.0.1:10001
 guestw
-gout	GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
+guest	cmp test_big.bin /root/big.bin
 
 test	TCP/IPv4: ns to guest (using namespace address): big transfer
 guestb	socat -u TCP4-LISTEN:10001 OPEN:test_big.bin,create,trunc
 nsout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 nsout	ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP4:__ADDR__:10001
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP4:__ADDR__:10001
 guestw
-gout	GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
+guest	cmp test_big.bin /root/big.bin
 
 test	TCP/IPv4: host to guest: small transfer
-set	TEMP_SMALL __STATEDIR__/small.img
 guestb	socat -u TCP4-LISTEN:10001 OPEN:test_small.bin,create,trunc
-host	dd if=/dev/urandom bs=2k count=100 of=__TEMP_SMALL__
 sleep	1
-host	socat -u OPEN:__TEMP_SMALL__ TCP4:127.0.0.1:10001
+host	socat -u OPEN:__BASEPATH__/small.bin TCP4:127.0.0.1:10001
 guestw
-hout	MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-gout	GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
+guest	cmp test_small.bin /root/small.bin
 
 test	TCP/IPv4: host to ns: small transfer
-set	TEMP_NS_SMALL __STATEDIR__/small_ns.img
 nsb	socat -u TCP4-LISTEN:10002 OPEN:__TEMP_NS_SMALL__,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP_SMALL__ TCP4:127.0.0.1:10002
+host	socat -u OPEN:__BASEPATH__/small.bin TCP4:127.0.0.1:10002
 nsw
-nsout	NS_MD5_SMALL md5sum __TEMP_NS_SMALL__ | cut -d' ' -f1
-check	[ "__NS_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_NS_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv4: guest to host: small transfer
 hostb	socat -u TCP4-LISTEN:10003 OPEN:__TEMP_SMALL__,create,trunc
 gout	GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
 sleep	1
-guest	socat -u OPEN:test_small.bin TCP4:__GW__:10003
+guest	socat -u OPEN:/root/small.bin TCP4:__GW__:10003
 hostw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv4: guest to ns: small transfer
-nsb	socat -u TCP4-LISTEN:10002 OPEN:__TEMP_SMALL__,create,trunc
+nsb	socat -u TCP4-LISTEN:10002 OPEN:__TEMP_NS_SMALL__,create,trunc
 sleep	1
-guest	socat -u OPEN:test_small.bin TCP4:__GW__:10002
+guest	socat -u OPEN:/root/small.bin TCP4:__GW__:10002
 nsw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_NS_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv4: ns to host (spliced): small transfer
 hostb	socat -u TCP4-LISTEN:10003 OPEN:__TEMP_SMALL__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP4:127.0.0.1:10003
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP4:127.0.0.1:10003
 hostw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv4: ns to host (via tap): small transfer
 hostb	socat -u TCP4-LISTEN:10003 OPEN:__TEMP_SMALL__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP4:__GW__:10003
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP4:__GW__:10003
 hostw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv4: ns to guest (using loopback address): small transfer
 guestb	socat -u TCP4-LISTEN:10001 OPEN:test_small.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP4:127.0.0.1:10001
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP4:127.0.0.1:10001
 guestw
-gout	GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
+guest	cmp test_small.bin /root/small.bin
 
 test	TCP/IPv4: ns to guest (using namespace address): small transfer
 guestb	socat -u TCP4-LISTEN:10001 OPEN:test_small.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP4:__ADDR__:10001
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP4:__ADDR__:10001
 guestw
-gout	GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
+guest	cmp test_small.bin /root/small.bin
 
 test	TCP/IPv6: host to guest: big transfer
 guestb	socat -u TCP6-LISTEN:10001 OPEN:test_big.bin,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP_BIG__ TCP6:[::1]:10001
+host	socat -u OPEN:__BASEPATH__/big.bin TCP6:[::1]:10001
 guestw
-gout	GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
+guest	cmp test_big.bin /root/big.bin
 
 test	TCP/IPv6: host to ns: big transfer
 nsb	socat -u TCP6-LISTEN:10002 OPEN:__TEMP_NS_BIG__,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP_BIG__ TCP6:[::1]:10002
+host	socat -u OPEN:__BASEPATH__/big.bin TCP6:[::1]:10002
 nsw
-nsout	NS_MD5_BIG md5sum __TEMP_NS_BIG__ | cut -d' ' -f1
-check	[ "__NS_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_NS_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv6: guest to host: big transfer
 hostb	socat -u TCP6-LISTEN:10003 OPEN:__TEMP_BIG__,create,trunc
 gout	GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
 gout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 sleep	1
-guest	socat -u OPEN:test_big.bin TCP6:[__GW6__%__IFNAME__]:10003
+guest	socat -u OPEN:/root/big.bin TCP6:[__GW6__%__IFNAME__]:10003
 hostw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv6: guest to ns: big transfer
-nsb	socat -u TCP6-LISTEN:10002 OPEN:__TEMP_BIG__,create,trunc
+nsb	socat -u TCP6-LISTEN:10002 OPEN:__TEMP_NS_BIG__,create,trunc
 sleep	1
-guest	socat -u OPEN:test_big.bin TCP6:[__GW6__%__IFNAME__]:10002
+guest	socat -u OPEN:/root/big.bin TCP6:[__GW6__%__IFNAME__]:10002
 nsw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_NS_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv6: ns to host (spliced): big transfer
 hostb	socat -u TCP6-LISTEN:10003 OPEN:__TEMP_BIG__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP6:[::1]:10003
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP6:[::1]:10003
 hostw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv6: ns to host (via tap): big transfer
 hostb	socat -u TCP6-LISTEN:10003 OPEN:__TEMP_BIG__,create,trunc
 nsout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP6:[__GW6__%__IFNAME__]:10003
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP6:[__GW6__%__IFNAME__]:10003
 hostw
-hout	HOST_MD5_BIG md5sum __TEMP_BIG__ | cut -d' ' -f1
-check	[ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
+check	cmp __TEMP_BIG__ __BASEPATH__/big.bin
 
 test	TCP/IPv6: ns to guest (using loopback address): big transfer
 guestb	socat -u TCP6-LISTEN:10001 OPEN:test_big.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP6:[::1]:10001
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP6:[::1]:10001
 guestw
-gout	GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
+guest	cmp test_big.bin /root/big.bin
 
 test	TCP/IPv6: ns to guest (using namespace address): big transfer
 guestb	socat -u TCP6-LISTEN:10001 OPEN:test_big.bin,create,trunc
 nsout	ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_BIG__ TCP6:[__ADDR6__]:10001
+ns	socat -u OPEN:__BASEPATH__/big.bin TCP6:[__ADDR6__]:10001
 guestw
-gout	GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
+guest	cmp test_big.bin /root/big.bin
 
 test	TCP/IPv6: host to guest: small transfer
 guestb	socat -u TCP6-LISTEN:10001 OPEN:test_small.bin,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP_SMALL__ TCP6:[::1]:10001
+host	socat -u OPEN:__BASEPATH__/small.bin TCP6:[::1]:10001
 guestw
-gout	GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
+guest	cmp test_small.bin /root/small.bin
 
 test	TCP/IPv6: host to ns: small transfer
 nsb	socat -u TCP6-LISTEN:10002 OPEN:__TEMP_NS_SMALL__,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP_SMALL__ TCP6:[::1]:10002
+host	socat -u OPEN:__BASEPATH__/small.bin TCP6:[::1]:10002
 nsw
-nsout	NS_MD5_SMALL md5sum __TEMP_NS_SMALL__ | cut -d' ' -f1
-check	[ "__NS_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_NS_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv6: guest to host: small transfer
 hostb	socat -u TCP6-LISTEN:10003 OPEN:__TEMP_SMALL__,create,trunc
 gout	GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
 gout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 sleep	1
-guest	socat -u OPEN:test_small.bin TCP6:[__GW6__%__IFNAME__]:10003
+guest	socat -u OPEN:/root/small.bin TCP6:[__GW6__%__IFNAME__]:10003
 hostw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv6: guest to ns: small transfer
-nsb	socat -u TCP6-LISTEN:10002 OPEN:__TEMP_SMALL__
+nsb	socat -u TCP6-LISTEN:10002 OPEN:__TEMP_NS_SMALL__
 sleep	1
-guest	socat -u OPEN:test_small.bin TCP6:[__GW6__%__IFNAME__]:10002
+guest	socat -u OPEN:/root/small.bin TCP6:[__GW6__%__IFNAME__]:10002
 nsw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_NS_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv6: ns to host (spliced): small transfer
 hostb	socat -u TCP6-LISTEN:10003 OPEN:__TEMP_SMALL__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP6:[::1]:10003
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP6:[::1]:10003
 hostw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv6: ns to host (via tap): small transfer
 hostb	socat -u TCP6-LISTEN:10003 OPEN:__TEMP_SMALL__,create,trunc
 nsout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP6:[__GW6__%__IFNAME__]:10003
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP6:[__GW6__%__IFNAME__]:10003
 hostw
-hout	HOST_MD5_SMALL md5sum __TEMP_SMALL__ | cut -d' ' -f1
-check	[ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
+check	cmp __TEMP_SMALL__ __BASEPATH__/small.bin
 
 test	TCP/IPv6: ns to guest (using loopback address): small transfer
 guestb	socat -u TCP6-LISTEN:10001 OPEN:test_small.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP6:[::1]:10001
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP6:[::1]:10001
 guestw
-gout	GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
+guest	cmp test_small.bin /root/small.bin
 
 test	TCP/IPv6: ns to guest (using namespace address): small transfer
 guestb	socat -u TCP6-LISTEN:10001 OPEN:test_small.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS_SMALL__ TCP6:[__ADDR6__]:10001
+ns	socat -u OPEN:__BASEPATH__/small.bin TCP6:[__ADDR6__]:10001
 guestw
-gout	GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
+guest	cmp test_small.bin /root/small.bin
diff --git a/test/passt_in_ns/udp b/test/passt_in_ns/udp
index b7e9cf3..d9cd85a 100644
--- a/test/passt_in_ns/udp
+++ b/test/passt_in_ns/udp
@@ -11,145 +11,128 @@
 # Copyright (c) 2021 Red Hat GmbH
 # Author: Stefano Brivio <sbrivio@redhat.com>
 
-gtools	socat ip jq md5sum cut
-nstools	socat ip jq md5sum cut
-htools	dd socat ip jq md5sum cut
+gtools	socat ip jq
+nstools	socat ip jq
+htools	socat ip jq
+
+set	TEMP __STATEDIR__/test.bin
+set	TEMP_NS __STATEDIR__/test_ns.bin
 
 test	UDP/IPv4: host to guest
-set	TEMP __STATEDIR__/data
 guestb	socat -u UDP4-LISTEN:10001,null-eof OPEN:test.bin,create,trunc
-host	dd if=/dev/urandom bs=1k count=5 > __TEMP__
 sleep	1
-host	socat -u OPEN:__TEMP__ UDP4:127.0.0.1:10001,shut-null
+host	socat -u OPEN:__BASEPATH__/medium.bin UDP4:127.0.0.1:10001,shut-null
 guestw
-hout	MD5 md5sum __TEMP__ | cut -d' ' -f1
-gout	GUEST_MD5 md5sum test.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5__" = "__MD5__" ]
+guest	cmp test.bin /root/medium.bin
 
 test	UDP/IPv4: host to ns
-set	TEMP_NS __STATEDIR__/data_ns
 nsb	socat -u UDP4-LISTEN:10002,null-eof OPEN:__TEMP_NS__,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP__ UDP4:127.0.0.1:10002,shut-null
+host	socat -u OPEN:__BASEPATH__/medium.bin UDP4:127.0.0.1:10002,shut-null
 nsw
-nsout	NS_MD5 md5sum __TEMP_NS__ | cut -d' ' -f1
-check	[ "__NS_MD5__" = "__MD5__" ]
+check	cmp __TEMP_NS__ __BASEPATH__/medium.bin
 
 test	UDP/IPv4: guest to host
 hostb	socat -u UDP4-LISTEN:10003,null-eof OPEN:__TEMP__,create,trunc
 gout	GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
 sleep	1
-guest	socat -u OPEN:test.bin UDP4:__GW__:10003,shut-null
+guest	socat -u OPEN:/root/medium.bin UDP4:__GW__:10003,shut-null
 hostw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP__ __BASEPATH__/medium.bin
 
 test	UDP/IPv4: guest to ns
 nsb	socat -u UDP4-LISTEN:10002,null-eof OPEN:__TEMP_NS__,create,trunc
 sleep	1
-guest	socat -u OPEN:test.bin UDP4:__GW__:10002,shut-null
+guest	socat -u OPEN:/root/medium.bin UDP4:__GW__:10002,shut-null
 nsw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP_NS__ __BASEPATH__/medium.bin
 
 test	UDP/IPv4: ns to host (recvmmsg/sendmmsg)
 hostb	socat -u UDP4-LISTEN:10003,null-eof OPEN:__TEMP__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP4:127.0.0.1:10003,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP4:127.0.0.1:10003,shut-null
 hostw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP__ __BASEPATH__/medium.bin
 
 test	UDP/IPv4: ns to host (via tap)
 hostb	socat -u UDP4-LISTEN:10003,null-eof OPEN:__TEMP__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP4:__GW__:10003,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP4:__GW__:10003,shut-null
 hostw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP__ __BASEPATH__/medium.bin
 
 test	UDP/IPv4: ns to guest (using loopback address)
 guestb	socat -u UDP4-LISTEN:10001,null-eof OPEN:test.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP4:127.0.0.1:10001,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP4:127.0.0.1:10001,shut-null
 guestw
-gout	GUEST_MD5 md5sum test.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5__" = "__MD5__" ]
+guest	cmp test.bin /root/medium.bin
 
 test	UDP/IPv4: ns to guest (using namespace address)
 guestb	socat -u UDP4-LISTEN:10001,null-eof OPEN:test.bin,create,trunc
 nsout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 nsout	ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP4:__ADDR__:10001,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP4:__ADDR__:10001,shut-null
 guestw
-gout	GUEST_MD5 md5sum test.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5__" = "__MD5__" ]
+guest	cmp test.bin /root/medium.bin
 
 test	UDP/IPv6: host to guest
 guestb	socat -u UDP6-LISTEN:10001,null-eof OPEN:test.bin,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP__ UDP6:[::1]:10001,shut-null
+host	socat -u OPEN:__BASEPATH__/medium.bin UDP6:[::1]:10001,shut-null
 guestw
-gout	GUEST_MD5 md5sum test.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5__" = "__MD5__" ]
+guest	cmp test.bin /root/medium.bin
 
 test	UDP/IPv6: host to ns
 nsb	socat -u UDP6-LISTEN:10002,null-eof OPEN:__TEMP_NS__,create,trunc
 sleep	1
-host	socat -u OPEN:__TEMP__ UDP6:[::1]:10002,shut-null
+host	socat -u OPEN:__BASEPATH__/medium.bin UDP6:[::1]:10002,shut-null
 nsw
-nsout	NS_MD5 md5sum __TEMP_NS__ | cut -d' ' -f1
-check	[ "__NS_MD5__" = "__MD5__" ]
+check	cmp __TEMP_NS__ __BASEPATH__/medium.bin
 
 test	UDP/IPv6: guest to host
 hostb	socat -u UDP6-LISTEN:10003,null-eof OPEN:__TEMP__,create,trunc
 gout	GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
 gout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 sleep	1
-guest	socat -u OPEN:test.bin UDP6:[__GW6__%__IFNAME__]:10003,shut-null
+guest	socat -u OPEN:/root/medium.bin UDP6:[__GW6__%__IFNAME__]:10003,shut-null
 hostw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP__ __BASEPATH__/medium.bin
 
 test	UDP/IPv6: guest to ns
 nsb	socat -u UDP6-LISTEN:10002,null-eof OPEN:__TEMP_NS__,create,trunc
 sleep	1
-guest	socat -u OPEN:test.bin UDP6:[__GW6__%__IFNAME__]:10002,shut-null
+guest	socat -u OPEN:/root/medium.bin UDP6:[__GW6__%__IFNAME__]:10002,shut-null
 nsw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP_NS__ __BASEPATH__/medium.bin
 
 test	UDP/IPv6: ns to host (recvmmsg/sendmmsg)
 hostb	socat -u UDP6-LISTEN:10003,null-eof OPEN:__TEMP__,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP6:[::1]:10003,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP6:[::1]:10003,shut-null
 hostw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP__ __BASEPATH__/medium.bin
 
 test	UDP/IPv6: ns to host (via tap)
 hostb	socat -u UDP6-LISTEN:10003,null-eof OPEN:__TEMP__,create,trunc
 nsout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP6:[__GW6__%__IFNAME__]:10003,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP6:[__GW6__%__IFNAME__]:10003,shut-null
 hostw
-hout	HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
-check	[ "__HOST_MD5__" = "__MD5__" ]
+check	cmp __TEMP__ __BASEPATH__/medium.bin
 
 test	UDP/IPv6: ns to guest (using loopback address)
 guestb	socat -u UDP6-LISTEN:10001,null-eof OPEN:test.bin,create,trunc
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP6:[::1]:10001,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP6:[::1]:10001,shut-null
 guestw
-gout	GUEST_MD5 md5sum test.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5__" = "__MD5__" ]
+guest	cmp test.bin /root/medium.bin
 
 test	UDP/IPv6: ns to guest (using namespace address)
 guestb	socat -u UDP6-LISTEN:10001,null-eof OPEN:test.bin,create,trunc
 nsout	ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
 sleep	1
-ns	socat -u OPEN:__TEMP_NS__ UDP6:[__ADDR6__]:10001,shut-null
+ns	socat -u OPEN:__BASEPATH__/medium.bin UDP6:[__ADDR6__]:10001,shut-null
 guestw
-gout	GUEST_MD5 md5sum test.bin | cut -d' ' -f1
-check	[ "__GUEST_MD5__" = "__MD5__" ]
+guest	cmp test.bin /root/medium.bin