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staging: fsl-dpaa2/eth: Change link settings on the fly

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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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioana Radulescu 2018-03-23 08:44:10 -05:00 committed by Greg Kroah-Hartman
parent 311cffa5e2
commit e018f1fd99
1 changed files with 9 additions and 6 deletions
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15
drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c
View file

@ -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;