net: ena: take into account xdp_features setting tx/rx queues

ena nic allows xdp just if enough hw queues are available for XDP.
Take into account queues configuration setting xdp_features.

Fixes: 66c0e13ad236 ("drivers: net: turn on XDP features")
Reviewed-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
index 8da79ee..1d4f2f4 100644 (file)
--- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c
+++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
@@ -850,11 +850,20 @@ static int ena_set_channels(struct net_device *netdev,
        struct ena_adapter *adapter = netdev_priv(netdev);
        u32 count = channels->combined_count;
        /* The check for max value is already done in ethtool */
-       if (count < ENA_MIN_NUM_IO_QUEUES ||
-           (ena_xdp_present(adapter) &&
-           !ena_xdp_legal_queue_count(adapter, count)))
+       if (count < ENA_MIN_NUM_IO_QUEUES)
                return -EINVAL;
 
+       if (!ena_xdp_legal_queue_count(adapter, count)) {
+               if (ena_xdp_present(adapter))
+                       return -EINVAL;
+
+               xdp_clear_features_flag(netdev);
+       } else {
+               xdp_set_features_flag(netdev,
+                                     NETDEV_XDP_ACT_BASIC |
+                                     NETDEV_XDP_ACT_REDIRECT);
+       }
+
        return ena_update_queue_count(adapter, count);
 }
 

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index d3999db..cbfe7f9 100644 (file)
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -4105,8 +4105,6 @@ static void ena_set_conf_feat_params(struct ena_adapter *adapter,
        /* Set offload features */
        ena_set_dev_offloads(feat, netdev);
 
-       netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT;
-
        adapter->max_mtu = feat->dev_attr.max_mtu;
        netdev->max_mtu = adapter->max_mtu;
        netdev->min_mtu = ENA_MIN_MTU;
@@ -4393,6 +4391,10 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        ena_config_debug_area(adapter);
 
+       if (ena_xdp_legal_queue_count(adapter, adapter->num_io_queues))
+               netdev->xdp_features = NETDEV_XDP_ACT_BASIC |
+                                      NETDEV_XDP_ACT_REDIRECT;
+
        memcpy(adapter->netdev->perm_addr, adapter->mac_addr, netdev->addr_len);
 
        netif_carrier_off(netdev);