netdev - [PATCH net-next v3 05/12] nfp: let core reject the unsupported coalescing parameters

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Message-Id: <20200305051542.991898-6-kuba@kernel.org>
Date:   Wed,  4 Mar 2020 21:15:35 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     andrew@...n.ch, ecree@...arflare.com, mkubecek@...e.cz,
        thomas.lendacky@....com, benve@...co.com, _govind@....com,
        peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, snelson@...sando.io, yisen.zhuang@...wei.com,
        salil.mehta@...wei.com, jeffrey.t.kirsher@...el.com,
        jacob.e.keller@...el.com, alexander.h.duyck@...ux.intel.com,
        michael.chan@...adcom.com, saeedm@...lanox.com, leon@...nel.org,
        netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next v3 05/12] nfp: 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.
No functional changes.

v3: adjust commit message for new error code and member name

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 .../ethernet/netronome/nfp/nfp_net_ethtool.c  | 22 ++-----------------
 1 file changed, 2 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
index d648e32c0520..2779f1526d1e 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
@@ -1343,26 +1343,6 @@ static int nfp_net_set_coalesce(struct net_device *netdev,
 	struct nfp_net *nn = netdev_priv(netdev);
 	unsigned int factor;
 
-	if (ec->rx_coalesce_usecs_irq ||
-	    ec->rx_max_coalesced_frames_irq ||
-	    ec->tx_coalesce_usecs_irq ||
-	    ec->tx_max_coalesced_frames_irq ||
-	    ec->stats_block_coalesce_usecs ||
-	    ec->use_adaptive_rx_coalesce ||
-	    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 -EOPNOTSUPP;
-
 	/* Compute factor used to convert coalesce '_usecs' parameters to
 	 * ME timestamp ticks.  There are 16 ME clock cycles for each timestamp
 	 * count.
@@ -1476,6 +1456,8 @@ static int nfp_net_set_channels(struct net_device *netdev,
 }
 
 static const struct ethtool_ops nfp_net_ethtool_ops = {
+	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
+				     ETHTOOL_COALESCE_MAX_FRAMES,
 	.get_drvinfo		= nfp_net_get_drvinfo,
 	.get_link		= ethtool_op_get_link,
 	.get_ringparam		= nfp_net_get_ringparam,
-- 
2.24.1