selftests: Add multipath tests for onlink flag

Add multipath tests for onlink flag: one test with onlink added to
both nexthops, then tests with onlink added to only 1 nexthop.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/net/fib-onlink-tests.sh b/tools/testing/selftests/net/fib-onlink-tests.sh
index 06b1d7cc12cce329581acb9b6bb132142b2418c2..3991ad1a368d54abc19ca1d1f0c8adbb2124ae0b 100755 (executable)
--- a/tools/testing/selftests/net/fib-onlink-tests.sh
+++ b/tools/testing/selftests/net/fib-onlink-tests.sh
@@ -56,7 +56,8 @@ TEST_NET6[2]=2001:db8:102
 
 # connected gateway
 CONGW[1]=169.254.1.254
-CONGW[2]=169.254.5.254
+CONGW[2]=169.254.3.254
+CONGW[3]=169.254.5.254
 
 # recursive gateway
 RECGW4[1]=169.254.11.254
@@ -232,6 +233,23 @@ run_ip()
        log_test $? ${exp_rc} "${desc}"
 }
 
+run_ip_mpath()
+{
+       local table="$1"
+       local prefix="$2"
+       local nh1="$3"
+       local nh2="$4"
+       local exp_rc="$5"
+       local desc="$6"
+
+       # dev arg may be empty
+       [ -n "${dev}" ] && dev="dev ${dev}"
+
+       run_cmd ip ro add table "${table}" "${prefix}"/32 \
+               nexthop via ${nh1} nexthop via ${nh2}
+       log_test $? ${exp_rc} "${desc}"
+}
+
 valid_onlink_ipv4()
 {
        # - unicast connected, unicast recursive
@@ -243,13 +261,37 @@ valid_onlink_ipv4()
 
        log_subsection "VRF ${VRF}"
 
-       run_ip ${VRF_TABLE} ${TEST_NET4[2]}.1 ${CONGW[2]} ${NETIFS[p5]} 0 "unicast connected"
+       run_ip ${VRF_TABLE} ${TEST_NET4[2]}.1 ${CONGW[3]} ${NETIFS[p5]} 0 "unicast connected"
        run_ip ${VRF_TABLE} ${TEST_NET4[2]}.2 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive"
 
        log_subsection "VRF device, PBR table"
 
-       run_ip ${PBR_TABLE} ${TEST_NET4[2]}.3 ${CONGW[2]} ${NETIFS[p5]} 0 "unicast connected"
+       run_ip ${PBR_TABLE} ${TEST_NET4[2]}.3 ${CONGW[3]} ${NETIFS[p5]} 0 "unicast connected"
        run_ip ${PBR_TABLE} ${TEST_NET4[2]}.4 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive"
+
+       # multipath version
+       #
+       log_subsection "default VRF - main table - multipath"
+
+       run_ip_mpath 254 ${TEST_NET4[1]}.5 \
+               "${CONGW[1]} dev ${NETIFS[p1]} onlink" \
+               "${CONGW[2]} dev ${NETIFS[p3]} onlink" \
+               0 "unicast connected - multipath"
+
+       run_ip_mpath 254 ${TEST_NET4[1]}.6 \
+               "${RECGW4[1]} dev ${NETIFS[p1]} onlink" \
+               "${RECGW4[2]} dev ${NETIFS[p3]} onlink" \
+               0 "unicast recursive - multipath"
+
+       run_ip_mpath 254 ${TEST_NET4[1]}.7 \
+               "${CONGW[1]} dev ${NETIFS[p1]}"        \
+               "${CONGW[2]} dev ${NETIFS[p3]} onlink" \
+               0 "unicast connected - multipath onlink first only"
+
+       run_ip_mpath 254 ${TEST_NET4[1]}.8 \
+               "${CONGW[1]} dev ${NETIFS[p1]} onlink" \
+               "${CONGW[2]} dev ${NETIFS[p3]}"        \
+               0 "unicast connected - multipath onlink second only"
 }
 
 invalid_onlink_ipv4()
@@ -289,6 +331,21 @@ run_ip6()
        log_test $? ${exp_rc} "${desc}"
 }
 
+run_ip6_mpath()
+{
+       local table="$1"
+       local prefix="$2"
+       local opts="$3"
+       local nh1="$4"
+       local nh2="$5"
+       local exp_rc="$6"
+       local desc="$7"
+
+       run_cmd ip -6 ro add table "${table}" "${prefix}"/128 "${opts}" \
+               nexthop via ${nh1} nexthop via ${nh2}
+       log_test $? ${exp_rc} "${desc}"
+}
+
 valid_onlink_ipv6()
 {
        # - unicast connected, unicast recursive, v4-mapped
@@ -310,6 +367,40 @@ valid_onlink_ipv6()
        run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::4 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected"
        run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::5 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive"
        run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::6 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped"
+
+       # multipath version
+       #
+       log_subsection "default VRF - main table - multipath"
+
+       run_ip6_mpath 254 ${TEST_NET6[1]}::4 "onlink" \
+               "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]}" \
+               "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]}" \
+               0 "unicast connected - multipath onlink"
+
+       run_ip6_mpath 254 ${TEST_NET6[1]}::5 "onlink" \
+               "${RECGW6[1]} dev ${NETIFS[p1]}" \
+               "${RECGW6[2]} dev ${NETIFS[p3]}" \
+               0 "unicast recursive - multipath onlink"
+
+       run_ip6_mpath 254 ${TEST_NET6[1]}::6 "onlink" \
+               "::ffff:${TEST_NET4IN6[1]} dev ${NETIFS[p1]}" \
+               "::ffff:${TEST_NET4IN6[2]} dev ${NETIFS[p3]}" \
+               0 "v4-mapped - multipath onlink"
+
+       run_ip6_mpath 254 ${TEST_NET6[1]}::7 "" \
+               "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]} onlink" \
+               "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]} onlink" \
+               0 "unicast connected - multipath onlink both nexthops"
+
+       run_ip6_mpath 254 ${TEST_NET6[1]}::8 "" \
+               "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]} onlink" \
+               "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]}" \
+               0 "unicast connected - multipath onlink first only"
+
+       run_ip6_mpath 254 ${TEST_NET6[1]}::9 "" \
+               "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]}"        \
+               "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]} onlink" \
+               0 "unicast connected - multipath onlink second only"
 }
 
 invalid_onlink_ipv6()
@@ -355,6 +446,7 @@ run_onlink_tests()
        log_section "IPv6 onlink"
        log_subsection "Valid onlink commands"
        valid_onlink_ipv6
+       log_subsection "Invalid onlink commands"
        invalid_onlink_ipv6
 }