selftests: fib_tests: Fix 'Command line is not complete' errors

[ Upstream commit a5f622984a623df9a84cf43f6b098d8dd76fbe05 ]

A couple of tests are verifying a route has been removed. The helper
expects the prefix as the first part of the expected output. When
checking that a route has been deleted the prefix is empty leading
to an invalid ip command:

  $ ip ro ls match
  Command line is not complete. Try option "help"

Fix by moving the comparison of expected output and output to a new
function that is used by both check_route and check_route6. Use the
new helper for the 2 checks on route removal.

Also, remove the reset of 'set -x' in route_setup which overrides the
user managed setting.

Fixes: d69faad76584c ("selftests: fib_tests: Add prefix route tests with metric")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh
index a4ccde0..2f190aa 100755 (executable)
--- a/tools/testing/selftests/net/fib_tests.sh
+++ b/tools/testing/selftests/net/fib_tests.sh
@@ -602,6 +602,39 @@ run_cmd()
        return $rc
 }
 
+check_expected()
+{
+       local out="$1"
+       local expected="$2"
+       local rc=0
+
+       [ "${out}" = "${expected}" ] && return 0
+
+       if [ -z "${out}" ]; then
+               if [ "$VERBOSE" = "1" ]; then
+                       printf "\nNo route entry found\n"
+                       printf "Expected:\n"
+                       printf "    ${expected}\n"
+               fi
+               return 1
+       fi
+
+       # tricky way to convert output to 1-line without ip's
+       # messy '\'; this drops all extra white space
+       out=$(echo ${out})
+       if [ "${out}" != "${expected}" ]; then
+               rc=1
+               if [ "${VERBOSE}" = "1" ]; then
+                       printf "    Unexpected route entry. Have:\n"
+                       printf "        ${out}\n"
+                       printf "    Expected:\n"
+                       printf "        ${expected}\n\n"
+               fi
+       fi
+
+       return $rc
+}
+
 # add route for a prefix, flushing any existing routes first
 # expected to be the first step of a test
 add_route6()
@@ -646,31 +679,7 @@ check_route6()
        local rc=0
 
        out=$($IP -6 ro ls match ${pfx} | sed -e 's/ pref medium//')
-       [ "${out}" = "${expected}" ] && return 0
-
-       if [ -z "${out}" ]; then
-               if [ "$VERBOSE" = "1" ]; then
-                       printf "\nNo route entry found\n"
-                       printf "Expected:\n"
-                       printf "    ${expected}\n"
-               fi
-               return 1
-       fi
-
-       # tricky way to convert output to 1-line without ip's
-       # messy '\'; this drops all extra white space
-       out=$(echo ${out})
-       if [ "${out}" != "${expected}" ]; then
-               rc=1
-               if [ "${VERBOSE}" = "1" ]; then
-                       printf "    Unexpected route entry. Have:\n"
-                       printf "        ${out}\n"
-                       printf "    Expected:\n"
-                       printf "        ${expected}\n\n"
-               fi
-       fi
-
-       return $rc
+       check_expected "${out}" "${expected}"
 }
 
 route_cleanup()
@@ -714,7 +723,7 @@ route_setup()
        $IP addr add 172.16.103.2/24 dev veth4
        $IP addr add 172.16.104.1/24 dev dummy1
 
-       set +ex
+       set +e
 }
 
 # assumption is that basic add of a single path route works
@@ -949,7 +958,8 @@ ipv6_addr_metric_test()
        run_cmd "$IP li set dev dummy2 down"
        rc=$?
        if [ $rc -eq 0 ]; then
-               check_route6 ""
+               out=$($IP -6 ro ls match 2001:db8:104::/64)
+               check_expected "${out}" ""
                rc=$?
        fi
        log_test $rc 0 "Prefix route removed on link down"
@@ -1009,34 +1019,9 @@ check_route()
        local pfx="172.16.104.0/24"
        local expected="$1"
        local out
-       local rc=0
 
        out=$($IP ro ls match ${pfx})
-       [ "${out}" = "${expected}" ] && return 0
-
-       if [ -z "${out}" ]; then
-               if [ "$VERBOSE" = "1" ]; then
-                       printf "\nNo route entry found\n"
-                       printf "Expected:\n"
-                       printf "    ${expected}\n"
-               fi
-               return 1
-       fi
-
-       # tricky way to convert output to 1-line without ip's
-       # messy '\'; this drops all extra white space
-       out=$(echo ${out})
-       if [ "${out}" != "${expected}" ]; then
-               rc=1
-               if [ "${VERBOSE}" = "1" ]; then
-                       printf "    Unexpected route entry. Have:\n"
-                       printf "        ${out}\n"
-                       printf "    Expected:\n"
-                       printf "        ${expected}\n\n"
-               fi
-       fi
-
-       return $rc
+       check_expected "${out}" "${expected}"
 }
 
 # assumption is that basic add of a single path route works
@@ -1301,7 +1286,8 @@ ipv4_addr_metric_test()
        run_cmd "$IP li set dev dummy2 down"
        rc=$?
        if [ $rc -eq 0 ]; then
-               check_route ""
+               out=$($IP ro ls match 172.16.104.0/24)
+               check_expected "${out}" ""
                rc=$?
        fi
        log_test $rc 0 "Prefix route removed on link down"