diff options
Diffstat (limited to 'tools/testing/selftests/net/xfrm_policy.sh')
| -rwxr-xr-x | tools/testing/selftests/net/xfrm_policy.sh | 344 |
1 files changed, 264 insertions, 80 deletions
diff --git a/tools/testing/selftests/net/xfrm_policy.sh b/tools/testing/selftests/net/xfrm_policy.sh index 8db35b99457c..3eeeeffb4005 100755 --- a/tools/testing/selftests/net/xfrm_policy.sh +++ b/tools/testing/selftests/net/xfrm_policy.sh @@ -18,8 +18,7 @@ # ns1: ping 10.0.2.254: does NOT pass via ipsec tunnel (exception) # ns2: ping 10.0.1.254: does NOT pass via ipsec tunnel (exception) -# Kselftest framework requirement - SKIP code is 4. -ksft_skip=4 +source lib.sh ret=0 policy_checks_ok=1 @@ -28,6 +27,19 @@ KEY_AES=0x0123456789abcdef0123456789012345 SPI1=0x1 SPI2=0x2 +do_esp_policy() { + local ns=$1 + local me=$2 + local remote=$3 + local lnet=$4 + local rnet=$5 + + # to encrypt packets as they go out (includes forwarded packets that need encapsulation) + ip -net $ns xfrm policy add src $lnet dst $rnet dir out tmpl src $me dst $remote proto esp mode tunnel priority 100 action allow + # to fwd decrypted packets after esp processing: + ip -net $ns xfrm policy add src $rnet dst $lnet dir fwd tmpl src $remote dst $me proto esp mode tunnel priority 100 action allow +} + do_esp() { local ns=$1 local me=$2 @@ -40,10 +52,66 @@ do_esp() { ip -net $ns xfrm state add src $remote dst $me proto esp spi $spi_in enc aes $KEY_AES auth sha1 $KEY_SHA mode tunnel sel src $rnet dst $lnet ip -net $ns xfrm state add src $me dst $remote proto esp spi $spi_out enc aes $KEY_AES auth sha1 $KEY_SHA mode tunnel sel src $lnet dst $rnet - # to encrypt packets as they go out (includes forwarded packets that need encapsulation) - ip -net $ns xfrm policy add src $lnet dst $rnet dir out tmpl src $me dst $remote proto esp mode tunnel priority 100 action allow - # to fwd decrypted packets after esp processing: - ip -net $ns xfrm policy add src $rnet dst $lnet dir fwd tmpl src $remote dst $me proto esp mode tunnel priority 100 action allow + do_esp_policy $ns $me $remote $lnet $rnet +} + +# add policies with different netmasks, to make sure kernel carries +# the policies contained within new netmask over when search tree is +# re-built. +# peer netns that are supposed to be encapsulated via esp have addresses +# in the 10.0.1.0/24 and 10.0.2.0/24 subnets, respectively. +# +# Adding a policy for '10.0.1.0/23' will make it necessary to +# alter the prefix of 10.0.1.0 subnet. +# In case new prefix overlaps with existing node, the node and all +# policies it carries need to be merged with the existing one(s). +# +# Do that here. +do_overlap() +{ + local ns=$1 + + # adds new nodes to tree (neither network exists yet in policy database). + ip -net $ns xfrm policy add src 10.1.0.0/24 dst 10.0.0.0/24 dir fwd priority 200 action block + + # adds a new node in the 10.0.0.0/24 tree (dst node exists). + ip -net $ns xfrm policy add src 10.2.0.0/24 dst 10.0.0.0/24 dir fwd priority 200 action block + + # adds a 10.2.0.0/23 node, but for different dst. + ip -net $ns xfrm policy add src 10.2.0.0/23 dst 10.0.1.0/24 dir fwd priority 200 action block + + # dst now overlaps with the 10.0.1.0/24 ESP policy in fwd. + # kernel must 'promote' existing one (10.0.0.0/24) to 10.0.0.0/23. + # But 10.0.0.0/23 also includes existing 10.0.1.0/24, so that node + # also has to be merged too, including source-sorted subtrees. + # old: + # 10.0.0.0/24 (node 1 in dst tree of the bin) + # 10.1.0.0/24 (node in src tree of dst node 1) + # 10.2.0.0/24 (node in src tree of dst node 1) + # 10.0.1.0/24 (node 2 in dst tree of the bin) + # 10.0.2.0/24 (node in src tree of dst node 2) + # 10.2.0.0/24 (node in src tree of dst node 2) + # + # The next 'policy add' adds dst '10.0.0.0/23', which means + # that dst node 1 and dst node 2 have to be merged including + # the sub-tree. As no duplicates are allowed, policies in + # the two '10.0.2.0/24' are also merged. + # + # after the 'add', internal search tree should look like this: + # 10.0.0.0/23 (node in dst tree of bin) + # 10.0.2.0/24 (node in src tree of dst node) + # 10.1.0.0/24 (node in src tree of dst node) + # 10.2.0.0/24 (node in src tree of dst node) + # + # 10.0.0.0/24 and 10.0.1.0/24 nodes have been merged as 10.0.0.0/23. + ip -net $ns xfrm policy add src 10.1.0.0/24 dst 10.0.0.0/23 dir fwd priority 200 action block + + # similar to above: add policies (with partially random address), with shrinking prefixes. + for p in 29 28 27;do + for k in $(seq 1 32); do + ip -net $ns xfrm policy add src 10.253.1.$((RANDOM%255))/$p dst 10.254.1.$((RANDOM%255))/$p dir fwd priority $((200+k)) action block 2>/dev/null + done + done } do_esp_policy_get_check() { @@ -133,26 +201,26 @@ check_xfrm() { # 1: iptables -m policy rule count != 0 rval=$1 ip=$2 - lret=0 + local lret=0 - ip netns exec ns1 ping -q -c 1 10.0.2.$ip > /dev/null + ip netns exec ${ns[1]} ping -q -c 1 10.0.2.$ip > /dev/null - check_ipt_policy_count ns3 + check_ipt_policy_count ${ns[3]} if [ $? -ne $rval ] ; then lret=1 fi - check_ipt_policy_count ns4 + check_ipt_policy_count ${ns[4]} if [ $? -ne $rval ] ; then lret=1 fi - ip netns exec ns2 ping -q -c 1 10.0.1.$ip > /dev/null + ip netns exec ${ns[2]} ping -q -c 1 10.0.1.$ip > /dev/null - check_ipt_policy_count ns3 + check_ipt_policy_count ${ns[3]} if [ $? -ne $rval ] ; then lret=1 fi - check_ipt_policy_count ns4 + check_ipt_policy_count ${ns[4]} if [ $? -ne $rval ] ; then lret=1 fi @@ -160,6 +228,105 @@ check_xfrm() { return $lret } +check_exceptions() +{ + logpostfix="$1" + local lret=0 + + # ping to .254 should be excluded from the tunnel (exception is in place). + check_xfrm 0 254 + if [ $? -ne 0 ]; then + echo "FAIL: expected ping to .254 to fail ($logpostfix)" + lret=1 + else + echo "PASS: ping to .254 bypassed ipsec tunnel ($logpostfix)" + fi + + # ping to .253 should use use ipsec due to direct policy exception. + check_xfrm 1 253 + if [ $? -ne 0 ]; then + echo "FAIL: expected ping to .253 to use ipsec tunnel ($logpostfix)" + lret=1 + else + echo "PASS: direct policy matches ($logpostfix)" + fi + + # ping to .2 should use ipsec. + check_xfrm 1 2 + if [ $? -ne 0 ]; then + echo "FAIL: expected ping to .2 to use ipsec tunnel ($logpostfix)" + lret=1 + else + echo "PASS: policy matches ($logpostfix)" + fi + + return $lret +} + +check_hthresh_repeat() +{ + local log=$1 + i=0 + + for i in $(seq 1 10);do + ip -net ${ns[1]} xfrm policy update src e000:0001::0000 dst ff01::0014:0000:0001 dir in tmpl src :: dst :: proto esp mode tunnel priority 100 action allow || break + ip -net ${ns[1]} xfrm policy set hthresh6 0 28 || break + + ip -net ${ns[1]} xfrm policy update src e000:0001::0000 dst ff01::01 dir in tmpl src :: dst :: proto esp mode tunnel priority 100 action allow || break + ip -net ${ns[1]} xfrm policy set hthresh6 0 28 || break + done + + if [ $i -ne 10 ] ;then + echo "FAIL: $log" 1>&2 + ret=1 + return 1 + fi + + echo "PASS: $log" + return 0 +} + +# insert non-overlapping policies in a random order and check that +# all of them can be fetched using the traffic selectors. +check_random_order() +{ + local ns=$1 + local log=$2 + + for i in $(seq 50); do + ip -net $ns xfrm policy flush + for j in $(seq 0 16 255 | sort -R); do + ip -net $ns xfrm policy add dst $j.0.0.0/24 dir out priority 10 action allow + done + for j in $(seq 0 16 255); do + if ! ip -net $ns xfrm policy get dst $j.0.0.0/24 dir out > /dev/null; then + echo "FAIL: $log" 1>&2 + return 1 + fi + done + done + + for i in $(seq 50); do + ip -net $ns xfrm policy flush + for j in $(seq 0 16 255 | sort -R); do + local addr=$(printf "e000:0000:%02x00::/56" $j) + ip -net $ns xfrm policy add dst $addr dir out priority 10 action allow + done + for j in $(seq 0 16 255); do + local addr=$(printf "e000:0000:%02x00::/56" $j) + if ! ip -net $ns xfrm policy get dst $addr dir out > /dev/null; then + echo "FAIL: $log" 1>&2 + return 1 + fi + done + done + + ip -net $ns xfrm policy flush + + echo "PASS: $log" + return 0 +} + #check for needed privileges if [ "$(id -u)" -ne 0 ];then echo "SKIP: Need root privileges" @@ -179,79 +346,80 @@ if [ $? -ne 0 ];then exit $ksft_skip fi -for i in 1 2 3 4; do - ip netns add ns$i - ip -net ns$i link set lo up -done +setup_ns ns1 ns2 ns3 ns4 +ns[1]=$ns1 +ns[2]=$ns2 +ns[3]=$ns3 +ns[4]=$ns4 DEV=veth0 -ip link add $DEV netns ns1 type veth peer name eth1 netns ns3 -ip link add $DEV netns ns2 type veth peer name eth1 netns ns4 +ip link add $DEV netns ${ns[1]} type veth peer name eth1 netns ${ns[3]} +ip link add $DEV netns ${ns[2]} type veth peer name eth1 netns ${ns[4]} -ip link add $DEV netns ns3 type veth peer name veth0 netns ns4 +ip link add $DEV netns ${ns[3]} type veth peer name veth0 netns ${ns[4]} DEV=veth0 for i in 1 2; do - ip -net ns$i link set $DEV up - ip -net ns$i addr add 10.0.$i.2/24 dev $DEV - ip -net ns$i addr add dead:$i::2/64 dev $DEV - - ip -net ns$i addr add 10.0.$i.253 dev $DEV - ip -net ns$i addr add 10.0.$i.254 dev $DEV - ip -net ns$i addr add dead:$i::fd dev $DEV - ip -net ns$i addr add dead:$i::fe dev $DEV + ip -net ${ns[$i]} link set $DEV up + ip -net ${ns[$i]} addr add 10.0.$i.2/24 dev $DEV + ip -net ${ns[$i]} addr add dead:$i::2/64 dev $DEV + + ip -net ${ns[$i]} addr add 10.0.$i.253 dev $DEV + ip -net ${ns[$i]} addr add 10.0.$i.254 dev $DEV + ip -net ${ns[$i]} addr add dead:$i::fd dev $DEV + ip -net ${ns[$i]} addr add dead:$i::fe dev $DEV done for i in 3 4; do -ip -net ns$i link set eth1 up -ip -net ns$i link set veth0 up + ip -net ${ns[$i]} link set eth1 up + ip -net ${ns[$i]} link set veth0 up done -ip -net ns1 route add default via 10.0.1.1 -ip -net ns2 route add default via 10.0.2.1 +ip -net ${ns[1]} route add default via 10.0.1.1 +ip -net ${ns[2]} route add default via 10.0.2.1 -ip -net ns3 addr add 10.0.1.1/24 dev eth1 -ip -net ns3 addr add 10.0.3.1/24 dev veth0 -ip -net ns3 addr add 2001:1::1/64 dev eth1 -ip -net ns3 addr add 2001:3::1/64 dev veth0 +ip -net ${ns[3]} addr add 10.0.1.1/24 dev eth1 +ip -net ${ns[3]} addr add 10.0.3.1/24 dev veth0 +ip -net ${ns[3]} addr add 2001:1::1/64 dev eth1 +ip -net ${ns[3]} addr add 2001:3::1/64 dev veth0 -ip -net ns3 route add default via 10.0.3.10 +ip -net ${ns[3]} route add default via 10.0.3.10 -ip -net ns4 addr add 10.0.2.1/24 dev eth1 -ip -net ns4 addr add 10.0.3.10/24 dev veth0 -ip -net ns4 addr add 2001:2::1/64 dev eth1 -ip -net ns4 addr add 2001:3::10/64 dev veth0 -ip -net ns4 route add default via 10.0.3.1 +ip -net ${ns[4]} addr add 10.0.2.1/24 dev eth1 +ip -net ${ns[4]} addr add 10.0.3.10/24 dev veth0 +ip -net ${ns[4]} addr add 2001:2::1/64 dev eth1 +ip -net ${ns[4]} addr add 2001:3::10/64 dev veth0 +ip -net ${ns[4]} route add default via 10.0.3.1 for j in 4 6; do for i in 3 4;do - ip netns exec ns$i sysctl net.ipv$j.conf.eth1.forwarding=1 > /dev/null - ip netns exec ns$i sysctl net.ipv$j.conf.veth0.forwarding=1 > /dev/null + ip netns exec ${ns[$i]} sysctl net.ipv$j.conf.eth1.forwarding=1 > /dev/null + ip netns exec ${ns[$i]} sysctl net.ipv$j.conf.veth0.forwarding=1 > /dev/null done done # abuse iptables rule counter to check if ping matches a policy -ip netns exec ns3 iptables -p icmp -A FORWARD -m policy --dir out --pol ipsec -ip netns exec ns4 iptables -p icmp -A FORWARD -m policy --dir out --pol ipsec +ip netns exec ${ns[3]} iptables -p icmp -A FORWARD -m policy --dir out --pol ipsec +ip netns exec ${ns[4]} iptables -p icmp -A FORWARD -m policy --dir out --pol ipsec if [ $? -ne 0 ];then echo "SKIP: Could not insert iptables rule" - for i in 1 2 3 4;do ip netns del ns$i;done + cleanup_ns $ns1 $ns2 $ns3 $ns4 exit $ksft_skip fi # localip remoteip localnet remotenet -do_esp ns3 10.0.3.1 10.0.3.10 10.0.1.0/24 10.0.2.0/24 $SPI1 $SPI2 -do_esp ns3 dead:3::1 dead:3::10 dead:1::/64 dead:2::/64 $SPI1 $SPI2 -do_esp ns4 10.0.3.10 10.0.3.1 10.0.2.0/24 10.0.1.0/24 $SPI2 $SPI1 -do_esp ns4 dead:3::10 dead:3::1 dead:2::/64 dead:1::/64 $SPI2 $SPI1 +do_esp ${ns[3]} 10.0.3.1 10.0.3.10 10.0.1.0/24 10.0.2.0/24 $SPI1 $SPI2 +do_esp ${ns[3]} dead:3::1 dead:3::10 dead:1::/64 dead:2::/64 $SPI1 $SPI2 +do_esp ${ns[4]} 10.0.3.10 10.0.3.1 10.0.2.0/24 10.0.1.0/24 $SPI2 $SPI1 +do_esp ${ns[4]} dead:3::10 dead:3::1 dead:2::/64 dead:1::/64 $SPI2 $SPI1 -do_dummies4 ns3 -do_dummies6 ns4 +do_dummies4 ${ns[3]} +do_dummies6 ${ns[4]} -do_esp_policy_get_check ns3 10.0.1.0/24 10.0.2.0/24 -do_esp_policy_get_check ns4 10.0.2.0/24 10.0.1.0/24 -do_esp_policy_get_check ns3 dead:1::/64 dead:2::/64 -do_esp_policy_get_check ns4 dead:2::/64 dead:1::/64 +do_esp_policy_get_check ${ns[3]} 10.0.1.0/24 10.0.2.0/24 +do_esp_policy_get_check ${ns[4]} 10.0.2.0/24 10.0.1.0/24 +do_esp_policy_get_check ${ns[3]} dead:1::/64 dead:2::/64 +do_esp_policy_get_check ${ns[4]} dead:2::/64 dead:1::/64 # ping to .254 should use ipsec, exception is not installed. check_xfrm 1 254 @@ -264,39 +432,55 @@ fi # installs exceptions # localip remoteip encryptdst plaindst -do_exception ns3 10.0.3.1 10.0.3.10 10.0.2.253 10.0.2.240/28 -do_exception ns4 10.0.3.10 10.0.3.1 10.0.1.253 10.0.1.240/28 +do_exception ${ns[3]} 10.0.3.1 10.0.3.10 10.0.2.253 10.0.2.240/28 +do_exception ${ns[4]} 10.0.3.10 10.0.3.1 10.0.1.253 10.0.1.240/28 -do_exception ns3 dead:3::1 dead:3::10 dead:2::fd dead:2:f0::/96 -do_exception ns4 dead:3::10 dead:3::1 dead:1::fd dead:1:f0::/96 +do_exception ${ns[3]} dead:3::1 dead:3::10 dead:2::fd dead:2:f0::/96 +do_exception ${ns[4]} dead:3::10 dead:3::1 dead:1::fd dead:1:f0::/96 -# ping to .254 should now be excluded from the tunnel -check_xfrm 0 254 +check_exceptions "exceptions" if [ $? -ne 0 ]; then - echo "FAIL: expected ping to .254 to fail" ret=1 -else - echo "PASS: ping to .254 bypassed ipsec tunnel" fi -# ping to .253 should use use ipsec due to direct policy exception. -check_xfrm 1 253 -if [ $? -ne 0 ]; then - echo "FAIL: expected ping to .253 to use ipsec tunnel" - ret=1 -else - echo "PASS: direct policy matches" -fi +# insert block policies with adjacent/overlapping netmasks +do_overlap ${ns[3]} -# ping to .2 should use ipsec. -check_xfrm 1 2 +check_exceptions "exceptions and block policies" if [ $? -ne 0 ]; then - echo "FAIL: expected ping to .2 to use ipsec tunnel" ret=1 -else - echo "PASS: policy matches" fi -for i in 1 2 3 4;do ip netns del ns$i;done +for n in ${ns[3]} ${ns[4]};do + ip -net $n xfrm policy set hthresh4 28 24 hthresh6 126 125 + sleep $((RANDOM%5)) +done + +check_exceptions "exceptions and block policies after hresh changes" + +# full flush of policy db, check everything gets freed incl. internal meta data +ip -net ${ns[3]} xfrm policy flush + +do_esp_policy ${ns[3]} 10.0.3.1 10.0.3.10 10.0.1.0/24 10.0.2.0/24 +do_exception ${ns[3]} 10.0.3.1 10.0.3.10 10.0.2.253 10.0.2.240/28 + +# move inexact policies to hash table +ip -net ${ns[3]} xfrm policy set hthresh4 16 16 + +sleep $((RANDOM%5)) +check_exceptions "exceptions and block policies after hthresh change in ns3" + +# restore original hthresh settings -- move policies back to tables +for n in ${ns[3]} ${ns[4]};do + ip -net $n xfrm policy set hthresh4 32 32 hthresh6 128 128 + sleep $((RANDOM%5)) +done +check_exceptions "exceptions and block policies after htresh change to normal" + +check_hthresh_repeat "policies with repeated htresh change" + +check_random_order ${ns[3]} "policies inserted in random order" + +cleanup_ns $ns1 $ns2 $ns3 $ns4 exit $ret |