selftests:mptcp: fix failure due to whitespace damage

'pm_nl_ctl' was adding a trailing whitespace after having printed the
IP. But at the end, the IP element is currently always the last one.

The bash script launching 'pm_nl_ctl' had trailing whitespaces in the
expected result on purpose. But these whitespaces have been removed when
the patch has been applied upstream. To avoid trailing whitespaces in
the bash code, 'pm_nl_ctl' and expected results have now been adapted.

The MPTCP PM selftest can now pass again.

Fixes: eedbc685 (selftests: add PM netlink functional tests)
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/net/mptcp/pm_netlink.sh

@@ -75,29 +75,29 @@ subflows 0" "defaults limits"
 ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.1
 ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.2 flags subflow dev lo
 ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.3 flags signal,backup
-check "ip netns exec $ns1 ./pm_nl_ctl get 1" "id 1 flags  10.0.1.1 " "simple add/get addr"
+check "ip netns exec $ns1 ./pm_nl_ctl get 1" "id 1 flags  10.0.1.1" "simple add/get addr"
 
 check "ip netns exec $ns1 ./pm_nl_ctl dump" \
 "id 1 flags  10.0.1.1
 id 2 flags subflow dev lo 10.0.1.2
-id 3 flags signal,backup 10.0.1.3 " "dump addrs"
+id 3 flags signal,backup 10.0.1.3" "dump addrs"
 
 ip netns exec $ns1 ./pm_nl_ctl del 2
 check "ip netns exec $ns1 ./pm_nl_ctl get 2" "" "simple del addr"
 check "ip netns exec $ns1 ./pm_nl_ctl dump" \
 "id 1 flags  10.0.1.1
-id 3 flags signal,backup 10.0.1.3 " "dump addrs after del"
+id 3 flags signal,backup 10.0.1.3" "dump addrs after del"
 
 ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.3
 check "ip netns exec $ns1 ./pm_nl_ctl get 4" "" "duplicate addr"
 
 ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.4 id 10 flags signal
-check "ip netns exec $ns1 ./pm_nl_ctl get 4" "id 4 flags signal 10.0.1.4 " "id addr increment"
+check "ip netns exec $ns1 ./pm_nl_ctl get 4" "id 4 flags signal 10.0.1.4" "id addr increment"
 
 for i in `seq 5 9`; do
 	ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.$i flags signal >/dev/null 2>&1
 done
-check "ip netns exec $ns1 ./pm_nl_ctl get 9" "id 9 flags signal 10.0.1.9 " "hard addr limit"
+check "ip netns exec $ns1 ./pm_nl_ctl get 9" "id 9 flags signal 10.0.1.9" "hard addr limit"
 check "ip netns exec $ns1 ./pm_nl_ctl get 10" "" "above hard addr limit"
 
 for i in `seq 9 256`; do
@@ -110,7 +110,7 @@ id 4 flags signal 10.0.1.4
 id 5 flags signal 10.0.1.5
 id 6 flags signal 10.0.1.6
 id 7 flags signal 10.0.1.7
-id 8 flags signal 10.0.1.8 " "id limit"
+id 8 flags signal 10.0.1.8" "id limit"
 
 ip netns exec $ns1 ./pm_nl_ctl flush
 check "ip netns exec $ns1 ./pm_nl_ctl dump" "" "flush addrs"

tools/testing/selftests/net/mptcp/pm_nl_ctl.c

@@ -335,14 +335,14 @@ static void print_addr(struct rtattr *attrs, int len)
 				error(1, errno, "wrong IP (v4) for family %d",
 				      family);
 			inet_ntop(AF_INET, RTA_DATA(attrs), str, sizeof(str));
-			printf("%s ", str);
+			printf("%s", str);
 		}
 		if (attrs->rta_type == MPTCP_PM_ADDR_ATTR_ADDR6) {
 			if (family != AF_INET6)
 				error(1, errno, "wrong IP (v6) for family %d",
 				      family);
 			inet_ntop(AF_INET6, RTA_DATA(attrs), str, sizeof(str));
-			printf("%s ", str);
+			printf("%s", str);
 		}
 		if (attrs->rta_type == MPTCP_PM_ADDR_ATTR_ID) {
 			memcpy(&id, RTA_DATA(attrs), 1);