netdev - [PATCH net-next 5/7] vmxnet3: let core reject the unsupported coalescing parameters

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Date:   Thu,  5 Mar 2020 17:06:00 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     jdike@...toit.com, richard@....at, anton.ivanov@...bridgegreys.com,
        linux-um@...ts.infradead.org, dledford@...hat.com, jgg@...pe.ca,
        leon@...nel.org, linux-rdma@...r.kernel.org, edumazet@...gle.com,
        jasowang@...hat.com, mkubecek@...e.cz, hayeswang@...ltek.com,
        doshir@...are.com, pv-drivers@...are.com, manishc@...vell.com,
        GR-Linux-NIC-Dev@...vell.com, gregkh@...uxfoundation.org,
        merez@...eaurora.org, kvalo@...eaurora.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 5/7] vmxnet3: let core reject the unsupported coalescing parameters

Set ethtool_ops->supported_coalesce_params to let
the core reject unsupported coalescing parameters.

This driver correctly rejects all unsupported parameters.
As a side effect of these changes the error code for
unsupported params changes from EINVAL to EOPNOTSUPP.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 drivers/net/vmxnet3/vmxnet3_ethtool.c | 24 +++---------------------
 1 file changed, 3 insertions(+), 21 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
index 1e4b9ba70983..6528940ce5f3 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethtool.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
@@ -780,27 +780,6 @@ vmxnet3_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
 	if (!VMXNET3_VERSION_GE_3(adapter))
 		return -EOPNOTSUPP;
 
-	if (ec->rx_coalesce_usecs_irq ||
-	    ec->rx_max_coalesced_frames_irq ||
-	    ec->tx_coalesce_usecs ||
-	    ec->tx_coalesce_usecs_irq ||
-	    ec->tx_max_coalesced_frames_irq ||
-	    ec->stats_block_coalesce_usecs ||
-	    ec->use_adaptive_tx_coalesce ||
-	    ec->pkt_rate_low ||
-	    ec->rx_coalesce_usecs_low ||
-	    ec->rx_max_coalesced_frames_low ||
-	    ec->tx_coalesce_usecs_low ||
-	    ec->tx_max_coalesced_frames_low ||
-	    ec->pkt_rate_high ||
-	    ec->rx_coalesce_usecs_high ||
-	    ec->rx_max_coalesced_frames_high ||
-	    ec->tx_coalesce_usecs_high ||
-	    ec->tx_max_coalesced_frames_high ||
-	    ec->rate_sample_interval) {
-		return -EINVAL;
-	}
-
 	if ((ec->rx_coalesce_usecs == 0) &&
 	    (ec->use_adaptive_rx_coalesce == 0) &&
 	    (ec->tx_max_coalesced_frames == 0) &&
@@ -891,6 +870,9 @@ vmxnet3_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
 }
 
 static const struct ethtool_ops vmxnet3_ethtool_ops = {
+	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
+				     ETHTOOL_COALESCE_MAX_FRAMES |
+				     ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
 	.get_drvinfo       = vmxnet3_get_drvinfo,
 	.get_regs_len      = vmxnet3_get_regs_len,
 	.get_regs          = vmxnet3_get_regs,
-- 
2.24.1