examples/distributor: check mempool error

Value returned from a function is not checked for errors before being used.

Coverity issue: 13207
Fixes: 07db4a975094 ("examples/distributor: new sample app")

Signed-off-by: Marcin Kerlin <marcinx.kerlin@intel.com>
Acked-by: Reshma Pattan <reshma.pattan@intel.com>

diff --git a/examples/distributor/main.c b/examples/distributor/main.c
index 0266d95..24857f2 100644 (file)
--- a/examples/distributor/main.c
+++ b/examples/distributor/main.c
@@ -165,19 +165,25 @@ struct lcore_params {
        struct rte_mempool *mem_pool;
 };
 
-static void
+static int
 quit_workers(struct rte_distributor *d, struct rte_mempool *p)
 {
        const unsigned num_workers = rte_lcore_count() - 2;
        unsigned i;
        struct rte_mbuf *bufs[num_workers];
-       rte_mempool_get_bulk(p, (void *)bufs, num_workers);
+
+       if (rte_mempool_get_bulk(p, (void *)bufs, num_workers) != 0) {
+               printf("line %d: Error getting mbufs from pool\n", __LINE__);
+               return -1;
+       }
 
        for (i = 0; i < num_workers; i++)
                bufs[i]->hash.rss = i << 1;
 
        rte_distributor_process(d, bufs, num_workers);
        rte_mempool_put_bulk(p, (void *)bufs, num_workers);
+
+       return 0;
 }
 
 static int
@@ -246,7 +252,8 @@ lcore_rx(struct lcore_params *p)
         * get packets till quit_signal is actually been
         * received and they gracefully shutdown
         */
-       quit_workers(d, mem_pool);
+       if (quit_workers(d, mem_pool) != 0)
+               return -1;
        /* rx thread should quit at last */
        return 0;
 }
@@ -577,7 +584,9 @@ main(int argc, char *argv[])
        }
        /* call lcore_main on master core only */
        struct lcore_params p = { 0, d, output_ring, mbuf_pool};
-       lcore_rx(&p);
+
+       if (lcore_rx(&p) != 0)
+               return -1;
 
        RTE_LCORE_FOREACH_SLAVE(lcore_id) {
                if (rte_eal_wait_lcore(lcore_id) < 0)