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net: qualcomm: rmnet: add ethtool support for configuring tx aggregation

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Add support for ETHTOOL_COALESCE_TX_AGGR for configuring the tx
aggregation settings.

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniele Palmas 2023-01-11 14:05:20 +01:00 committed by David S. Miller
parent 64b5d1f8f2
commit db8a563a9d
1 changed files with 45 additions and 0 deletions
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45
drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
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@ -215,7 +215,52 @@ static void rmnet_get_ethtool_stats(struct net_device *dev,
memcpy(data, st, ARRAY_SIZE(rmnet_gstrings_stats) * sizeof(u64)); memcpy(data, st, ARRAY_SIZE(rmnet_gstrings_stats) * sizeof(u64));
} }
static int rmnet_get_coalesce(struct net_device *dev,
struct ethtool_coalesce *coal,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct rmnet_priv *priv = netdev_priv(dev);
struct rmnet_port *port;
port = rmnet_get_port_rtnl(priv->real_dev);
memset(kernel_coal, 0, sizeof(*kernel_coal));
kernel_coal->tx_aggr_max_bytes = port->egress_agg_params.bytes;
kernel_coal->tx_aggr_max_frames = port->egress_agg_params.count;
kernel_coal->tx_aggr_time_usecs = div_u64(port->egress_agg_params.time_nsec,
NSEC_PER_USEC);
return 0;
}
static int rmnet_set_coalesce(struct net_device *dev,
struct ethtool_coalesce *coal,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct rmnet_priv *priv = netdev_priv(dev);
struct rmnet_port *port;
port = rmnet_get_port_rtnl(priv->real_dev);
if (kernel_coal->tx_aggr_max_frames < 1 || kernel_coal->tx_aggr_max_frames > 64)
return -EINVAL;
if (kernel_coal->tx_aggr_max_bytes > 32768)
return -EINVAL;
rmnet_map_update_ul_agg_config(port, kernel_coal->tx_aggr_max_bytes,
kernel_coal->tx_aggr_max_frames,
kernel_coal->tx_aggr_time_usecs);
return 0;
}
static const struct ethtool_ops rmnet_ethtool_ops = { static const struct ethtool_ops rmnet_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_TX_AGGR,
.get_coalesce = rmnet_get_coalesce,
.set_coalesce = rmnet_set_coalesce,
.get_ethtool_stats = rmnet_get_ethtool_stats, .get_ethtool_stats = rmnet_get_ethtool_stats,
.get_strings = rmnet_get_strings, .get_strings = rmnet_get_strings,
.get_sset_count = rmnet_get_sset_count, .get_sset_count = rmnet_get_sset_count,