app/testpmd: fix crash when port id out of bound

In testpmd, when using "rx_vlan add 1 77", it will be a segment fault
Because the port ID should be less than 32.

Fixes: edab33b1c01d ("app/testpmd: support port hotplug")

Signed-off-by: Michael Qiu <michael.qiu@intel.com>

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 1d29146..cf2aa6e 100644 (file)
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -388,7 +388,7 @@ port_id_is_invalid(portid_t port_id, enum print_warning warning)
        if (port_id == (portid_t)RTE_PORT_ALL)
                return 0;
 
-       if (ports[port_id].enabled)
+       if (port_id < RTE_MAX_ETHPORTS && ports[port_id].enabled)
                return 0;
 
        if (warning == ENABLED_WARN)