examples: adjust Rx and Tx descriptors to device limits

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

diff --git a/examples/exception_path/main.c b/examples/exception_path/main.c
index fe30e07..229b7de 100644 (file)
--- a/examples/exception_path/main.c
+++ b/examples/exception_path/main.c
@@ -448,6 +448,8 @@ static void
 init_port(uint8_t port)
 {
        int ret;
+       uint16_t nb_rxd = NB_RXD;
+       uint16_t nb_txd = NB_TXD;
 
        /* Initialise device and RX/TX queues */
        PRINT_INFO("Initialising port %u ...", (unsigned)port);
@@ -457,14 +459,21 @@ init_port(uint8_t port)
                FATAL_ERROR("Could not configure port%u (%d)",
                            (unsigned)port, ret);
 
-       ret = rte_eth_rx_queue_setup(port, 0, NB_RXD, rte_eth_dev_socket_id(port),
+       ret = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
+       if (ret < 0)
+               FATAL_ERROR("Could not adjust number of descriptors for port%u (%d)",
+                           (unsigned)port, ret);
+
+       ret = rte_eth_rx_queue_setup(port, 0, nb_rxd,
+                               rte_eth_dev_socket_id(port),
                                NULL,
                                pktmbuf_pool);
        if (ret < 0)
                FATAL_ERROR("Could not setup up RX queue for port%u (%d)",
                            (unsigned)port, ret);
 
-       ret = rte_eth_tx_queue_setup(port, 0, NB_TXD, rte_eth_dev_socket_id(port),
+       ret = rte_eth_tx_queue_setup(port, 0, nb_txd,
+                               rte_eth_dev_socket_id(port),
                                NULL);
        if (ret < 0)
                FATAL_ERROR("Could not setup up TX queue for port%u (%d)",