examples/multi_process: make RSS and checksum optional

The default values of rx mq_mode and rx offloads for port
will cause symmetric_mp startup failure if the port do not
support rss or csum. This patch makes the app to reconfigure
the NIC without them. Only quit the app if the second
reconfiguration fails.

Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Wei Ling <weix.ling@intel.com>

diff --git a/examples/multi_process/symmetric_mp/main.c b/examples/multi_process/symmetric_mp/main.c
index 050337765f613678fbea1927fbd03f9bbebd717c..75237dee6e3830003651b0e749587b224669918a 100644 (file)
--- a/examples/multi_process/symmetric_mp/main.c
+++ b/examples/multi_process/symmetric_mp/main.c
@@ -232,6 +232,20 @@ smp_port_init(uint16_t port, struct rte_mempool *mbuf_pool,
        }
 
        retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
+       if (retval == -EINVAL) {
+               printf("Port %u configuration failed. Re-attempting with HW checksum disabled.\n",
+                       port);
+               port_conf.rxmode.offloads &= ~(RTE_ETH_RX_OFFLOAD_CHECKSUM);
+               retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
+       }
+
+       if (retval == -ENOTSUP) {
+               printf("Port %u configuration failed. Re-attempting with HW RSS disabled.\n",
+                       port);
+               port_conf.rxmode.mq_mode &= ~(RTE_ETH_MQ_RX_RSS);
+               retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
+       }
+
        if (retval < 0)
                return retval;