From e813a4df7da28a69ef32642f42fd625aea798967 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Wed, 21 Aug 2024 14:20:17 +1000 Subject: conf: Allow address remapped to host to be configured Because the host and guest share the same IP address with passt/pasta, it's not possible for the guest to directly address the host. Therefore we allow packets from the guest going to a special "NAT to host" address to be redirected to the host, appearing there as though they have both source and destination address of loopback. Currently that special address is always the address of the default gateway (or none). That can be a problem if we want that gateway to be addressable by the guest. Therefore, allow the special "NAT to host" address to be overridden on the command line with a new --map-host-loopback option. In order to exercise and test it, update the passt_in_ns and perf tests to use this option and give different mapping addresses for the two layers of the environment. Signed-off-by: David Gibson Signed-off-by: Stefano Brivio --- test/perf/passt_tcp | 33 +++++++++++++++++---------------- 1 file changed, 17 insertions(+), 16 deletions(-) (limited to 'test/perf/passt_tcp') diff --git a/test/perf/passt_tcp b/test/perf/passt_tcp index 635998e..089d953 100644 --- a/test/perf/passt_tcp +++ b/test/perf/passt_tcp @@ -15,6 +15,9 @@ gtools /sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr # From neper nstools /sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr htools bc head sed seq +set MAP_NS4 192.0.2.2 +set MAP_NS6 2001:db8:9a55::2 + test passt: throughput and latency guest /sbin/sysctl -w net.core.rmem_max=536870912 @@ -29,8 +32,6 @@ ns /sbin/sysctl -w net.ipv4.tcp_rmem="4096 524288 134217728" ns /sbin/sysctl -w net.ipv4.tcp_wmem="4096 524288 134217728" ns /sbin/sysctl -w net.ipv4.tcp_timestamps=0 -gout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway' -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' hout FREQ_PROCFS (echo "scale=1"; sed -n 's/cpu MHz.*: \([0-9]*\)\..*$/(\1+10^2\/2)\/10^3/p' /proc/cpuinfo) | bc -l | head -n1 @@ -54,16 +55,16 @@ iperf3s ns 10002 bw - bw - guest ip link set dev __IFNAME__ mtu 1280 -iperf3 BW guest __GW6__%__IFNAME__ 10002 __TIME__ __OPTS__ -w 4M +iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 4M bw __BW__ 1.2 1.5 guest ip link set dev __IFNAME__ mtu 1500 -iperf3 BW guest __GW6__%__IFNAME__ 10002 __TIME__ __OPTS__ -w 4M +iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 4M bw __BW__ 1.6 1.8 guest ip link set dev __IFNAME__ mtu 9000 -iperf3 BW guest __GW6__%__IFNAME__ 10002 __TIME__ __OPTS__ -w 8M +iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 8M bw __BW__ 4.0 5.0 guest ip link set dev __IFNAME__ mtu 65520 -iperf3 BW guest __GW6__%__IFNAME__ 10002 __TIME__ __OPTS__ -w 16M +iperf3 BW guest __MAP_NS6__ 10002 __TIME__ __OPTS__ -w 16M bw __BW__ 7.0 8.0 iperf3k ns @@ -75,7 +76,7 @@ lat - lat - lat - nsb tcp_rr --nolog -6 -gout LAT tcp_rr --nolog -l1 -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p' +gout LAT tcp_rr --nolog -l1 -6 -c -H __MAP_NS6__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tl TCP CRR latency over IPv6: guest to host @@ -85,29 +86,29 @@ lat - lat - lat - nsb tcp_crr --nolog -6 -gout LAT tcp_crr --nolog -l1 -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p' +gout LAT tcp_crr --nolog -l1 -6 -c -H __MAP_NS6__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 500 400 tr TCP throughput over IPv4: guest to host iperf3s ns 10002 guest ip link set dev __IFNAME__ mtu 256 -iperf3 BW guest __GW__ 10002 __TIME__ __OPTS__ -w 1M +iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 1M bw __BW__ 0.2 0.3 guest ip link set dev __IFNAME__ mtu 576 -iperf3 BW guest __GW__ 10002 __TIME__ __OPTS__ -w 1M +iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 1M bw __BW__ 0.5 0.8 guest ip link set dev __IFNAME__ mtu 1280 -iperf3 BW guest __GW__ 10002 __TIME__ __OPTS__ -w 4M +iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 4M bw __BW__ 1.2 1.5 guest ip link set dev __IFNAME__ mtu 1500 -iperf3 BW guest __GW__ 10002 __TIME__ __OPTS__ -w 4M +iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 4M bw __BW__ 1.6 1.8 guest ip link set dev __IFNAME__ mtu 9000 -iperf3 BW guest __GW__ 10002 __TIME__ __OPTS__ -w 8M +iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 8M bw __BW__ 4.0 5.0 guest ip link set dev __IFNAME__ mtu 65520 -iperf3 BW guest __GW__ 10002 __TIME__ __OPTS__ -w 16M +iperf3 BW guest __MAP_NS4__ 10002 __TIME__ __OPTS__ -w 16M bw __BW__ 7.0 8.0 iperf3k ns @@ -123,7 +124,7 @@ lat - lat - lat - nsb tcp_rr --nolog -4 -gout LAT tcp_rr --nolog -l1 -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p' +gout LAT tcp_rr --nolog -l1 -4 -c -H __MAP_NS4__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tl TCP CRR latency over IPv4: guest to host @@ -133,7 +134,7 @@ lat - lat - lat - nsb tcp_crr --nolog -4 -gout LAT tcp_crr --nolog -l1 -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p' +gout LAT tcp_crr --nolog -l1 -4 -c -H __MAP_NS4__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 500 400 tr TCP throughput over IPv6: host to guest -- cgit v1.2.3