diff mbox series

[net,v2,5/8] net: ena: take into account xdp_features setting tx/rx queues

Message ID 1852028bc23fec0368a1426fa2f216853d3cf269.1678364613.git.lorenzo@kernel.org (mailing list archive)
State Accepted
Commit 7aa6dc351b92abbfead9ebe25ce7a7ac0384ea6d
Delegated to: Netdev Maintainers
Headers show
Series update xdp_features flag according to NIC re-configuration | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 20 this patch: 20
netdev/cc_maintainers fail 3 blamed authors not CCed: simon.horman@corigine.com sdf@google.com alardam@gmail.com; 8 maintainers not CCed: simon.horman@corigine.com sdf@google.com wsa+renesas@sang-engineering.com mw@semihalf.com tglx@linutronix.de alardam@gmail.com ndagan@amazon.com saeedb@amazon.com
netdev/build_clang success Errors and warnings before: 20 this patch: 20
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 20 this patch: 20
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 41 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Lorenzo Bianconi March 9, 2023, 12:25 p.m. UTC
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>
---
 drivers/net/ethernet/amazon/ena/ena_ethtool.c | 15 ++++++++++++---
 drivers/net/ethernet/amazon/ena/ena_netdev.c  |  6 ++++--
 2 files changed, 16 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
index 8da79eedc057..1d4f2f4d10f2 100644
--- 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 d3999db7c6a2..cbfe7f977270 100644
--- 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);