net/avf: fix VF Rx interrupt enabling

As UIO doesn't support multiple interrupt, and the interrupt
is occupied by the control plane. PMD should not try to enable
RX queue interrupt. Then APP can know the RX queue interrupt
is not enabled and only choose the polling mode.

Fixes: d6bde6b5eae9 ("net/avf: enable Rx interrupt")

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>

diff --git a/drivers/net/avf/avf_ethdev.c b/drivers/net/avf/avf_ethdev.c
index cf7bbb2..eba1d68 100644 (file)
--- a/drivers/net/avf/avf_ethdev.c
+++ b/drivers/net/avf/avf_ethdev.c
@@ -292,7 +292,8 @@ static int avf_config_rx_queues_irqs(struct rte_eth_dev *dev,
        uint16_t interval, i;
        int vec;
 
-       if (dev->data->dev_conf.intr_conf.rxq != 0) {
+       if (rte_intr_cap_multiple(intr_handle) &&
+           dev->data->dev_conf.intr_conf.rxq) {
                if (rte_intr_efd_enable(intr_handle, dev->data->nb_rx_queues))
                        return -1;
        }
@@ -308,7 +309,8 @@ static int avf_config_rx_queues_irqs(struct rte_eth_dev *dev,
                }
        }
 
-       if (!dev->data->dev_conf.intr_conf.rxq) {
+       if (!dev->data->dev_conf.intr_conf.rxq ||
+           !rte_intr_dp_is_en(intr_handle)) {
                /* Rx interrupt disabled, Map interrupt only for writeback */
                vf->nb_msix = 1;
                if (vf->vf_res->vf_cap_flags &