diff mbox series

[RFC,net-next,3/6] net: thunderx: take into account xdp_features setting tx/rx queues

Message ID b309a0924d2c1abc19077bb59e1b2b85f5441611.1677153730.git.lorenzo@kernel.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series update xdp_features flag according to NIC re-configuration | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 1 maintainers not CCed: linux-arm-kernel@lists.infradead.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 33 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 Feb. 23, 2023, 12:11 p.m. UTC 
thunderx nic allows xdp just if enough hw queues are available for XDP.
Take into account queues configuration setting xdp_features.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../net/ethernet/cavium/thunder/nicvf_ethtool.c | 17 +++++++++++------
 .../net/ethernet/cavium/thunder/nicvf_main.c    |  4 +++-
 2 files changed, 14 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
index e5c71f907852..d8d71bf97983 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
@@ -735,12 +735,17 @@  static int nicvf_set_channels(struct net_device *dev,
 	if (channel->tx_count > nic->max_queues)
 		return -EINVAL;
 
-	if (nic->xdp_prog &&
-	    ((channel->tx_count + channel->rx_count) > nic->max_queues)) {
-		netdev_err(nic->netdev,
-			   "XDP mode, RXQs + TXQs > Max %d\n",
-			   nic->max_queues);
-		return -EINVAL;
+	if (channel->tx_count + channel->rx_count > nic->max_queues) {
+		if (nic->xdp_prog) {
+			netdev_err(nic->netdev,
+				   "XDP mode, RXQs + TXQs > Max %d\n",
+				   nic->max_queues);
+			return -EINVAL;
+		}
+
+		xdp_clear_features_flag(nic->netdev);
+	} else if (!pass1_silicon(nic->pdev)) {
+		xdp_set_features_flag(dev, NETDEV_XDP_ACT_BASIC);
 	}
 
 	if (if_up)
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index 8b25313c7f6b..eff350e0bc2a 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -2218,7 +2218,9 @@  static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	netdev->netdev_ops = &nicvf_netdev_ops;
 	netdev->watchdog_timeo = NICVF_TX_TIMEOUT;
 
-	netdev->xdp_features = NETDEV_XDP_ACT_BASIC;
+	if (!pass1_silicon(nic->pdev) &&
+	    nic->rx_queues + nic->tx_queues <= nic->max_queues)
+		netdev->xdp_features = NETDEV_XDP_ACT_BASIC;
 
 	/* MTU range: 64 - 9200 */
 	netdev->min_mtu = NIC_HW_MIN_FRS;