| The hardware queue scheduling is apparently configured with fixed |
| priorities, which creates a nasty fairness issue where traffic from one |
| CPU can starve traffic from all other CPUs. |
| |
| Work around this issue by forcing all tx packets to go through one CPU, |
| until this issue is fixed properly. |
| |
| Signed-off-by: Felix Fietkau <nbd@nbd.name> |
| --- |
| --- a/drivers/net/ethernet/marvell/mvneta.c |
| +++ b/drivers/net/ethernet/marvell/mvneta.c |
| @@ -4691,6 +4691,16 @@ static int mvneta_ethtool_set_eee(struct |
| return phylink_ethtool_set_eee(pp->phylink, eee); |
| } |
| |
| +#ifndef CONFIG_ARM64 |
| +static u16 mvneta_select_queue(struct net_device *dev, struct sk_buff *skb, |
| + struct net_device *sb_dev) |
| +{ |
| + /* XXX: hardware queue scheduling is broken, |
| + * use only one queue until it is fixed */ |
| + return 0; |
| +} |
| +#endif |
| + |
| static const struct net_device_ops mvneta_netdev_ops = { |
| .ndo_open = mvneta_open, |
| .ndo_stop = mvneta_stop, |
| @@ -4701,6 +4711,9 @@ static const struct net_device_ops mvnet |
| .ndo_fix_features = mvneta_fix_features, |
| .ndo_get_stats64 = mvneta_get_stats64, |
| .ndo_do_ioctl = mvneta_ioctl, |
| +#ifndef CONFIG_ARM64 |
| + .ndo_select_queue = mvneta_select_queue, |
| +#endif |
| .ndo_bpf = mvneta_xdp, |
| .ndo_xdp_xmit = mvneta_xdp_xmit, |
| }; |