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Date: Thu, 12 Nov 2020 16:12:29 +0100
From: Antonio Cardace <acardace@...hat.com>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: [PATCH net-next 1/1] netdevsim: support ethtool ring and coalesce settings
Add ethtool ring and coalesce settings support for testing.
Signed-off-by: Antonio Cardace <acardace@...hat.com>
---
drivers/net/netdevsim/ethtool.c | 65 +++++++++++++++++++++++++++----
drivers/net/netdevsim/netdevsim.h | 9 ++++-
2 files changed, 65 insertions(+), 9 deletions(-)
diff --git a/drivers/net/netdevsim/ethtool.c b/drivers/net/netdevsim/ethtool.c
index f1884d90a876..25acd3bc1781 100644
--- a/drivers/net/netdevsim/ethtool.c
+++ b/drivers/net/netdevsim/ethtool.c
@@ -7,15 +7,18 @@
#include "netdevsim.h"
+#define UINT32_MAX 0xFFFFFFFFU
+#define ETHTOOL_COALESCE_ALL_PARAMS UINT32_MAX
+
static void
nsim_get_pause_stats(struct net_device *dev,
struct ethtool_pause_stats *pause_stats)
{
struct netdevsim *ns = netdev_priv(dev);
- if (ns->ethtool.report_stats_rx)
+ if (ns->ethtool.pauseparam.report_stats_rx)
pause_stats->rx_pause_frames = 1;
- if (ns->ethtool.report_stats_tx)
+ if (ns->ethtool.pauseparam.report_stats_tx)
pause_stats->tx_pause_frames = 2;
}
@@ -25,8 +28,8 @@ nsim_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam *pause)
struct netdevsim *ns = netdev_priv(dev);
pause->autoneg = 0; /* We don't support ksettings, so can't pretend */
- pause->rx_pause = ns->ethtool.rx;
- pause->tx_pause = ns->ethtool.tx;
+ pause->rx_pause = ns->ethtool.pauseparam.rx;
+ pause->tx_pause = ns->ethtool.pauseparam.tx;
}
static int
@@ -37,8 +40,39 @@ nsim_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam *pause)
if (pause->autoneg)
return -EINVAL;
- ns->ethtool.rx = pause->rx_pause;
- ns->ethtool.tx = pause->tx_pause;
+ ns->ethtool.pauseparam.rx = pause->rx_pause;
+ ns->ethtool.pauseparam.tx = pause->tx_pause;
+ return 0;
+}
+
+static int nsim_get_coalesce(struct net_device *dev, struct ethtool_coalesce *coal)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ memcpy(coal, &ns->ethtool.coalesce, sizeof(ns->ethtool.coalesce));
+ return 0;
+}
+
+static int nsim_set_coalesce(struct net_device *dev, struct ethtool_coalesce *coal)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ memcpy(&ns->ethtool.coalesce, coal, sizeof(ns->ethtool.coalesce));
+ return 0;
+}
+
+static void nsim_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ memcpy(ring, &ns->ethtool.ring, sizeof(ns->ethtool.ring));
+}
+
+static int nsim_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ memcpy(&ns->ethtool.ring, ring, sizeof(ns->ethtool.ring));
return 0;
}
@@ -46,19 +80,34 @@ static const struct ethtool_ops nsim_ethtool_ops = {
.get_pause_stats = nsim_get_pause_stats,
.get_pauseparam = nsim_get_pauseparam,
.set_pauseparam = nsim_set_pauseparam,
+ .supported_coalesce_params = ETHTOOL_COALESCE_ALL_PARAMS,
+ .set_coalesce = nsim_set_coalesce,
+ .get_coalesce = nsim_get_coalesce,
+ .get_ringparam = nsim_get_ringparam,
+ .set_ringparam = nsim_set_ringparam,
};
+static void nsim_ethtool_coalesce_init(struct netdevsim *ns)
+{
+ ns->ethtool.ring.rx_max_pending = UINT32_MAX;
+ ns->ethtool.ring.rx_jumbo_max_pending = UINT32_MAX;
+ ns->ethtool.ring.rx_mini_max_pending = UINT32_MAX;
+ ns->ethtool.ring.tx_max_pending = UINT32_MAX;
+}
+
void nsim_ethtool_init(struct netdevsim *ns)
{
struct dentry *ethtool, *dir;
ns->netdev->ethtool_ops = &nsim_ethtool_ops;
+ nsim_ethtool_coalesce_init(ns);
+
ethtool = debugfs_create_dir("ethtool", ns->nsim_dev_port->ddir);
dir = debugfs_create_dir("pause", ethtool);
debugfs_create_bool("report_stats_rx", 0600, dir,
- &ns->ethtool.report_stats_rx);
+ &ns->ethtool.pauseparam.report_stats_rx);
debugfs_create_bool("report_stats_tx", 0600, dir,
- &ns->ethtool.report_stats_tx);
+ &ns->ethtool.pauseparam.report_stats_tx);
}
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index 827fc80f50a0..b023dc0a4259 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -15,6 +15,7 @@
#include <linux/debugfs.h>
#include <linux/device.h>
+#include <linux/ethtool.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netdevice.h>
@@ -51,13 +52,19 @@ struct nsim_ipsec {
u32 ok;
};
-struct nsim_ethtool {
+struct nsim_ethtool_pauseparam {
bool rx;
bool tx;
bool report_stats_rx;
bool report_stats_tx;
};
+struct nsim_ethtool {
+ struct nsim_ethtool_pauseparam pauseparam;
+ struct ethtool_coalesce coalesce;
+ struct ethtool_ringparam ring;
+};
+
struct netdevsim {
struct net_device *netdev;
struct nsim_dev *nsim_dev;
--
2.28.0
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