[PATCH 6/9] staging: fsl-dpaa2/eth: Change link settings on the fly

Ioana Radulescu
2018-03-23T13:44:10Z

Newer MC versions allow us to change link settings while the
interface is up. Only check interface status if we are using
an old version.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
---
drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c
index dfbfa94..bfc8b64 100644
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c
@@ -119,6 +119,8 @@ dpaa2_eth_get_link_ksettings(struct net_device *net_dev,
return err;
}

+#define DPNI_DYNAMIC_LINK_SET_VER_MAJOR 7
+#define DPNI_DYNAMIC_LINK_SET_VER_MINOR 1
static int
dpaa2_eth_set_link_ksettings(struct net_device *net_dev,
const struct ethtool_link_ksettings *link_settings)
@@ -127,15 +129,16 @@ dpaa2_eth_set_link_ksettings(struct net_device *net_dev,
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
int err = 0;

- netdev_dbg(net_dev, "Setting link parameters...");
-
- /* Due to a temporary MC limitation, the DPNI must be down
+ /* If using an older MC version, the DPNI must be down
* in order to be able to change link settings. Taking steps to let
* the user know that.
*/
- if (netif_running(net_dev)) {
- netdev_info(net_dev, "Sorry, interface must be brought down first.\n");
- return -EACCES;
+ if (dpaa2_eth_cmp_dpni_ver(priv, DPNI_DYNAMIC_LINK_SET_VER_MAJOR,
+ DPNI_DYNAMIC_LINK_SET_VER_MINOR) < 0) {
+ if (netif_running(net_dev)) {
+ netdev_info(net_dev, "Interface must be brought down first.\n");
+ return -EACCES;
+ }
}

cfg.rate = link_settings->base.speed;