devargs: parse bus info

[dpdk.git] / examples / vhost_xen / main.c

diff --git a/examples/vhost_xen/main.c b/examples/vhost_xen/main.c
index 69213a4..eba4d35 100644 (file)
--- a/examples/vhost_xen/main.c
+++ b/examples/vhost_xen/main.c
@@ -279,7 +279,8 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
        struct rte_eth_rxconf *rxconf;
        struct rte_eth_conf port_conf;
        uint16_t rx_rings, tx_rings = (uint16_t)rte_lcore_count();
-       const uint16_t rx_ring_size = RTE_TEST_RX_DESC_DEFAULT, tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
+       uint16_t rx_ring_size = RTE_TEST_RX_DESC_DEFAULT;
+       uint16_t tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
        int retval;
        uint16_t q;
 
@@ -307,6 +308,17 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
        if (retval != 0)
                return retval;
 
+       retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &rx_ring_size,
+               &tx_ring_size);
+       if (retval != 0)
+               return retval;
+       if (rx_ring_size > RTE_TEST_RX_DESC_DEFAULT ||
+               tx_ring_size > RTE_TEST_TX_DESC_DEFAULT) {
+               RTE_LOG(ERR, VHOST_PORT, "Mbuf pool has an insufficient size for "
+                       "port %u.\n", port);
+               return -1;
+       }
+
        rte_eth_dev_info_get(port, &dev_info);
        rxconf = &dev_info.default_rxconf;
        rxconf->rx_drop_en = 1;