Resources should be cleared while exiting the application.

Bugzilla ID: 437
Signed-off-by: Sarosh Arif <sarosh.a...@emumba.com>
---
 examples/packet_ordering/main.c | 51 ++++++++++++++++++++++++++-------
 1 file changed, 41 insertions(+), 10 deletions(-)

diff --git a/examples/packet_ordering/main.c b/examples/packet_ordering/main.c
index b5fc6c54b..49326d015 100644
--- a/examples/packet_ordering/main.c
+++ b/examples/packet_ordering/main.c
@@ -653,6 +653,17 @@ tx_thread(struct rte_ring *ring_in)
        return 0;
 }
 
+static void
+stop_and_close_eth_dev(uint16_t port_id)
+{
+       RTE_ETH_FOREACH_DEV(port_id) {
+               printf("Closing port %d...", port_id);
+               rte_eth_dev_stop(port_id);
+               rte_eth_dev_close(port_id);
+               printf(" Done\n");
+       }
+}
+
 int
 main(int argc, char **argv)
 {
@@ -683,25 +694,31 @@ main(int argc, char **argv)
                rte_exit(EXIT_FAILURE, "Invalid packet_ordering arguments\n");
 
        /* Check if we have enought cores */
-       if (rte_lcore_count() < 3)
+       if (rte_lcore_count() < 3) {
+               stop_and_close_eth_dev(port_id);
                rte_exit(EXIT_FAILURE, "Error, This application needs at "
                                "least 3 logical cores to run:\n"
                                "1 lcore for packet RX\n"
                                "1 lcore for packet TX\n"
                                "and at least 1 lcore for worker threads\n");
+       }
 
        nb_ports = rte_eth_dev_count_avail();
        if (nb_ports == 0)
-               rte_exit(EXIT_FAILURE, "Error: no ethernet ports detected\n");
-       if (nb_ports != 1 && (nb_ports & 1))
+               rte_exit(EXIT_FAILURE, "Error: no ethernet ports detected\n");
+       if (nb_ports != 1 && (nb_ports & 1)) {
+               stop_and_close_eth_dev(port_id);
                rte_exit(EXIT_FAILURE, "Error: number of ports must be even, 
except "
                                "when using a single port\n");
+       }
 
        mbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", MBUF_PER_POOL,
                        MBUF_POOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
                        rte_socket_id());
-       if (mbuf_pool == NULL)
+       if (mbuf_pool == NULL) {
+               stop_and_close_eth_dev(port_id);
                rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
+       }
 
        nb_ports_available = nb_ports;
 
@@ -716,12 +733,15 @@ main(int argc, char **argv)
                /* init port */
                printf("Initializing port %u... done\n", port_id);
 
-               if (configure_eth_port(port_id) != 0)
+               if (configure_eth_port(port_id) != 0) {
+                       stop_and_close_eth_dev(port_id);
                        rte_exit(EXIT_FAILURE, "Cannot initialize port 
%"PRIu8"\n",
                                        port_id);
+               }
        }
 
        if (!nb_ports_available) {
+               stop_and_close_eth_dev(port_id);
                rte_exit(EXIT_FAILURE,
                        "All available ports are disabled. Please set 
portmask.\n");
        }
@@ -729,19 +749,25 @@ main(int argc, char **argv)
        /* Create rings for inter core communication */
        rx_to_workers = rte_ring_create("rx_to_workers", RING_SIZE, 
rte_socket_id(),
                        RING_F_SP_ENQ);
-       if (rx_to_workers == NULL)
+       if (rx_to_workers == NULL) {
+               stop_and_close_eth_dev(port_id);
                rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
+       }
 
        workers_to_tx = rte_ring_create("workers_to_tx", RING_SIZE, 
rte_socket_id(),
                        RING_F_SC_DEQ);
-       if (workers_to_tx == NULL)
+       if (workers_to_tx == NULL) {
+               stop_and_close_eth_dev(port_id);
                rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
+       }
 
        if (!disable_reorder) {
                send_args.buffer = rte_reorder_create("PKT_RO", rte_socket_id(),
                                REORDER_BUFFER_SIZE);
-               if (send_args.buffer == NULL)
+               if (send_args.buffer == NULL) {
+                       stop_and_close_eth_dev(port_id);
                        rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
+               }
        }
 
        last_lcore_id   = get_last_lcore_id();
@@ -769,12 +795,17 @@ main(int argc, char **argv)
 
        /* Start rx_thread() on the master core */
        rx_thread(rx_to_workers);
-
+
        RTE_LCORE_FOREACH_SLAVE(lcore_id) {
-               if (rte_eal_wait_lcore(lcore_id) < 0)
+               if (rte_eal_wait_lcore(lcore_id) < 0) {
+                       stop_and_close_eth_dev(port_id);
+                       rte_eal_cleanup();
                        return -1;
+               }
        }
 
        print_stats();
+       stop_and_close_eth_dev(port_id);
+       rte_eal_cleanup();
        return 0;
 }
-- 
2.17.1

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