[PATCH] app/test:add NIC parameter exception handling

[Kaisen You]

Add NIC exception parameter handling to dpdk_test process,
program exits when carrying unbound vfio NIC parameters.

Fixes: 50247fe03fe0 ("test/timer: exercise new APIs in secondary process")
Cc: sta...@dpdk.org

Signed-off-by: Kaisen You <kaisenx....@intel.com>
---
 app/test/test.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/app/test/test.c b/app/test/test.c
index fb073ff795..c927adba81 100644
--- a/app/test/test.c
+++ b/app/test/test.c
@@ -20,6 +20,7 @@ extern cmdline_parse_ctx_t main_ctx[];
 #endif
 
 #include <rte_memory.h>
+#include <rte_ethdev.h>
 #include <rte_eal.h>
 #include <rte_cycles.h>
 #include <rte_log.h>
@@ -111,6 +112,9 @@ main(int argc, char **argv)
        char *tests[argc]; /* store an array of tests to run */
        int test_count = 0;
        int i;
+       uint16_t count;
+       uint16_t port_id;
+       uint16_t nb_ports;
 #endif
        char *extra_args;
        int ret;
@@ -157,6 +161,20 @@ main(int argc, char **argv)
 
        prgname = argv[0];
 
+       count = 0;
+       RTE_ETH_FOREACH_DEV(port_id) {
+               count++;
+       }
+       nb_ports = count;
+       if (nb_ports == 0) {
+               if (rte_errno == EBUSY)
+                       printf("Requested device cannot be used: %d\n", 
rte_errno);
+               else
+                       printf("No probed ethernet devices: %d\n", rte_errno);
+               ret = 0;
+               goto out;
+       }
+
 #ifdef RTE_LIB_TIMER
        ret = rte_timer_subsystem_init();
        if (ret < 0 && ret != -EALREADY) {
-- 
2.25.1