net/enic: document how to configure vNIC parameters

[dpdk.git] / drivers / net / enic / enic_main.c

diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 15a05b4..e3e58fb 100644 (file)
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -1284,6 +1284,15 @@ static int enic_dev_init(struct enic *enic)
                return err;
        }
 
+       /* Get available resource counts */
+       enic_get_res_counts(enic);
+       if (enic->conf_rq_count == 1) {
+               dev_err(enic, "Running with only 1 RQ configured in the vNIC is not supported.\n");
+               dev_err(enic, "Please configure 2 RQs in the vNIC for each Rx queue used by DPDK.\n");
+               dev_err(enic, "See the ENIC PMD guide for more information.\n");
+               return -EINVAL;
+       }
+
        eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
        if (!eth_dev->data->mac_addrs) {
                dev_err(enic, "mac addr storage alloc failed, aborting.\n");
@@ -1292,11 +1301,6 @@ static int enic_dev_init(struct enic *enic)
        ether_addr_copy((struct ether_addr *) enic->mac_addr,
                &eth_dev->data->mac_addrs[0]);
 
-
-       /* Get available resource counts
-       */
-       enic_get_res_counts(enic);
-
        vnic_dev_set_reset_flag(enic->vdev, 0);
 
        /* set up link status checking */