Test virutal server via directing routing for IPv4.

Tested:

# selftests: netfilter: ipvs.sh # Testing DR mode... # ipvs.sh: PASS ok 6 selftests: netfilter: ipvs.sh

Signed-off-by: Haishuang Yan yanhaishuang@cmss.chinamobile.com --- v6: use #!/bin/sh v5: use cmp to compare two file contents suggested by Simon Horman v4: use #!/bin/bash -p suggested by Duncan Roe v3: use bash style v2: optimize test script --- tools/testing/selftests/netfilter/Makefile | 2 +- tools/testing/selftests/netfilter/ipvs.sh | 178 +++++++++++++++++++++++++++++ 2 files changed, 179 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/netfilter/ipvs.sh

diff --git a/tools/testing/selftests/netfilter/Makefile b/tools/testing/selftests/netfilter/Makefile index 4144984..de1032b 100644 --- a/tools/testing/selftests/netfilter/Makefile +++ b/tools/testing/selftests/netfilter/Makefile @@ -2,6 +2,6 @@ # Makefile for netfilter selftests

TEST_PROGS := nft_trans_stress.sh nft_nat.sh bridge_brouter.sh \ - conntrack_icmp_related.sh nft_flowtable.sh + conntrack_icmp_related.sh nft_flowtable.sh ipvs.sh

include ../lib.mk diff --git a/tools/testing/selftests/netfilter/ipvs.sh b/tools/testing/selftests/netfilter/ipvs.sh new file mode 100755 index 0000000..3d11d87 --- /dev/null +++ b/tools/testing/selftests/netfilter/ipvs.sh @@ -0,0 +1,178 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# End-to-end ipvs test suite +# Topology: +#--------------------------------------------------------------+ +# | | +# ns0 | ns1 | +# ----------- | ----------- ----------- | +# | veth01 | --------- | veth10 | | veth12 | | +# ----------- peer ----------- ----------- | +# | | | | +# ----------- | | | +# | br0 | |----------------- peer |--------------| +# ----------- | | | +# | | | | +# ---------- peer ---------- ----------- | +# | veth02 | --------- | veth20 | | veth21 | | +# ---------- | ---------- ----------- | +# | ns2 | +# | | +#--------------------------------------------------------------+ +# +# We assume that all network driver are loaded +# + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 +ret=0 +GREEN='\033[0;92m' +RED='\033[0;31m' +NC='\033[0m' # No Color + +readonly port=8080 + +readonly vip_v4=207.175.44.110 +readonly cip_v4=10.0.0.2 +readonly gip_v4=10.0.0.1 +readonly dip_v4=172.16.0.1 +readonly rip_v4=172.16.0.2 +readonly sip_v4=10.0.0.3 + +readonly infile="$(mktemp)" +readonly outfile="$(mktemp)" +readonly datalen=32 + +sysipvsnet="/proc/sys/net/ipv4/vs/" +if [ ! -d $sysipvsnet ]; then + modprobe -q ip_vs + if [ $? -ne 0 ]; then + echo "skip: could not run test without ipvs module" + exit $ksft_skip + fi +fi + +ip -Version > /dev/null 2>&1 +if [ $? -ne 0 ]; then + echo "SKIP: Could not run test without ip tool" + exit $ksft_skip +fi + +ipvsadm -v > /dev/null 2>&1 +if [ $? -ne 0 ]; then + echo "SKIP: Could not run test without ipvsadm" + exit $ksft_skip +fi + +setup() { + ip netns add ns0 + ip netns add ns1 + ip netns add ns2 + + ip link add veth01 netns ns0 type veth peer name veth10 netns ns1 + ip link add veth02 netns ns0 type veth peer name veth20 netns ns2 + ip link add veth12 netns ns1 type veth peer name veth21 netns ns2 + + ip netns exec ns0 ip link set veth01 up + ip netns exec ns0 ip link set veth02 up + ip netns exec ns0 ip link add br0 type bridge + ip netns exec ns0 ip link set veth01 master br0 + ip netns exec ns0 ip link set veth02 master br0 + ip netns exec ns0 ip link set br0 up + ip netns exec ns0 ip addr add ${cip_v4}/24 dev br0 + + ip netns exec ns1 ip link set lo up + ip netns exec ns1 ip link set veth10 up + ip netns exec ns1 ip addr add ${gip_v4}/24 dev veth10 + ip netns exec ns1 ip link set veth12 up + ip netns exec ns1 ip addr add ${dip_v4}/24 dev veth12 + + ip netns exec ns2 ip link set lo up + ip netns exec ns2 ip link set veth21 up + ip netns exec ns2 ip addr add ${rip_v4}/24 dev veth21 + ip netns exec ns2 ip link set veth20 up + ip netns exec ns2 ip addr add ${sip_v4}/24 dev veth20 + + sleep 1 + + dd if=/dev/urandom of="${infile}" bs="${datalen}" count=1 status=none +} + +cleanup() { + for i in 0 1 2 + do + ip netns del ns$i > /dev/null 2>&1 + done + + if [ -f "${outfile}" ]; then + rm "${outfile}" + fi + if [ -f "${infile}" ]; then + rm "${infile}" + fi +} + +server_listen() { + ip netns exec ns2 nc -l -p 8080 > "${outfile}" & + server_pid=$! + sleep 0.2 +} + +client_connect() { + ip netns exec ns0 timeout 2 nc -w 1 ${vip_v4} ${port} < "${infile}" +} + +verify_data() { + wait "${server_pid}" + cmp "$infile" "$outfile" 2>/dev/null +} + +test_service() { + server_listen + client_connect + verify_data +} + + +test_dr() { + ip netns exec ns0 ip route add ${vip_v4} via ${gip_v4} dev br0 + + ip netns exec ns1 sysctl -qw net.ipv4.ip_forward=1 + ip netns exec ns1 ipvsadm -A -t ${vip_v4}:${port} -s rr + ip netns exec ns1 ipvsadm -a -t ${vip_v4}:${port} -r ${rip_v4}:${port} + ip netns exec ns1 ip addr add ${vip_v4}/32 dev lo:1 + + # avoid incorrect arp response + ip netns exec ns2 sysctl -qw net.ipv4.conf.all.arp_ignore=1 + ip netns exec ns2 sysctl -qw net.ipv4.conf.all.arp_announce=2 + # avoid reverse route lookup + ip netns exec ns2 sysctl -qw net.ipv4.conf.all.rp_filter=0 + ip netns exec ns2 sysctl -qw net.ipv4.conf.veth21.rp_filter=0 + ip netns exec ns2 ip addr add ${vip_v4}/32 dev lo:1 + + test_service +} + +run_tests() { + local errors= + + echo "Testing DR mode..." + setup + test_dr + errors=$(( $errors + $? )) + + return $errors +} + +trap cleanup EXIT + +cleanup +run_tests + +if [ $? -ne 0 ]; then + echo -e "$(basename $0): ${RED}FAIL${NC}" + exit 1 +fi +echo -e "$(basename $0): ${GREEN}PASS${NC}" +exit 0

Test virtual server via ipip tunnel.

Tested: # selftests: netfilter: ipvs.sh # Testing DR mode... # Testing NAT mode... # Testing Tunnel mode... # ipvs.sh: PASS ok 6 selftests: netfilter: ipvs.sh

Signed-off-by: Haishuang Yan yanhaishuang@cmss.chinamobile.com --- v2: optimize test script --- tools/testing/selftests/netfilter/ipvs.sh | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)

diff --git a/tools/testing/selftests/netfilter/ipvs.sh b/tools/testing/selftests/netfilter/ipvs.sh index 8b2e618..c3b8f90 100755 --- a/tools/testing/selftests/netfilter/ipvs.sh +++ b/tools/testing/selftests/netfilter/ipvs.sh @@ -168,6 +168,30 @@ test_nat() { test_service }

+test_tun() { + ip netns exec ns0 ip route add ${vip_v4} via ${gip_v4} dev br0 + + ip netns exec ns1 modprobe ipip + ip netns exec ns1 ip link set tunl0 up + ip netns exec ns1 sysctl -qw net.ipv4.ip_forward=0 + ip netns exec ns1 sysctl -qw net.ipv4.conf.all.send_redirects=0 + ip netns exec ns1 sysctl -qw net.ipv4.conf.default.send_redirects=0 + ip netns exec ns1 ipvsadm -A -t ${vip_v4}:${port} -s rr + ip netns exec ns1 ipvsadm -a -i -t ${vip_v4}:${port} -r ${rip_v4}:${port} + ip netns exec ns1 ip addr add ${vip_v4}/32 dev lo:1 + + ip netns exec ns2 modprobe ipip + ip netns exec ns2 ip link set tunl0 up + ip netns exec ns2 sysctl -qw net.ipv4.conf.all.arp_ignore=1 + ip netns exec ns2 sysctl -qw net.ipv4.conf.all.arp_announce=2 + ip netns exec ns2 sysctl -qw net.ipv4.conf.all.rp_filter=0 + ip netns exec ns2 sysctl -qw net.ipv4.conf.tunl0.rp_filter=0 + ip netns exec ns2 sysctl -qw net.ipv4.conf.veth21.rp_filter=0 + ip netns exec ns2 ip addr add ${vip_v4}/32 dev lo:1 + + test_service +} + run_tests() { local errors=

@@ -183,6 +207,12 @@ run_tests() { test_nat errors=$(( $errors + $? ))

+ echo "Testing Tunnel mode..." + cleanup + setup + test_tun + errors=$(( $errors + $? )) + return $errors }