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| author | Ioana Ciornei <ioana.ciornei@nxp.com> | 2021-04-02 12:55:32 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-02 14:25:47 -0700 |
| commit | 8ed3cefc260e2ef2107cbd9484e4025f60c37bb5 (patch) | |
| tree | f3190341aa7a8a7ad13abf4d133d44c9cc9c23c7 /drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | |
| parent | 50f826999a80a100218b0cbf4f14057bc0edb3a3 (diff) | |
| download | lwn-8ed3cefc260e2ef2107cbd9484e4025f60c37bb5.tar.gz lwn-8ed3cefc260e2ef2107cbd9484e4025f60c37bb5.zip | |
dpaa2-eth: export the rx copybreak value as an ethtool tunable
It's useful, especially for debugging purposes, to have the Rx copybreak
value changeable at runtime. Export it as an ethtool tunable.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c index bf59708b869e..ad5e374eeccf 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c @@ -782,6 +782,44 @@ static int dpaa2_eth_get_ts_info(struct net_device *dev, return 0; } +static int dpaa2_eth_get_tunable(struct net_device *net_dev, + const struct ethtool_tunable *tuna, + void *data) +{ + struct dpaa2_eth_priv *priv = netdev_priv(net_dev); + int err = 0; + + switch (tuna->id) { + case ETHTOOL_RX_COPYBREAK: + *(u32 *)data = priv->rx_copybreak; + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int dpaa2_eth_set_tunable(struct net_device *net_dev, + const struct ethtool_tunable *tuna, + const void *data) +{ + struct dpaa2_eth_priv *priv = netdev_priv(net_dev); + int err = 0; + + switch (tuna->id) { + case ETHTOOL_RX_COPYBREAK: + priv->rx_copybreak = *(u32 *)data; + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + const struct ethtool_ops dpaa2_ethtool_ops = { .get_drvinfo = dpaa2_eth_get_drvinfo, .nway_reset = dpaa2_eth_nway_reset, @@ -796,4 +834,6 @@ const struct ethtool_ops dpaa2_ethtool_ops = { .get_rxnfc = dpaa2_eth_get_rxnfc, .set_rxnfc = dpaa2_eth_set_rxnfc, .get_ts_info = dpaa2_eth_get_ts_info, + .get_tunable = dpaa2_eth_get_tunable, + .set_tunable = dpaa2_eth_set_tunable, }; |