1 The hardware queue scheduling is apparently configured with fixed
2 priorities, which creates a nasty fairness issue where traffic from one
3 CPU can starve traffic from all other CPUs.
5 Work around this issue by forcing all tx packets to go through one CPU,
6 until this issue is fixed properly.
8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
10 --- a/drivers/net/ethernet/marvell/mvneta.c
11 +++ b/drivers/net/ethernet/marvell/mvneta.c
12 @@ -3984,6 +3984,16 @@ static int mvneta_ethtool_set_eee(struct
13 return phylink_ethtool_set_eee(pp->phylink, eee);
16 +static u16 mvneta_select_queue(struct net_device *dev, struct sk_buff *skb,
18 + select_queue_fallback_t fallback)
20 + /* XXX: hardware queue scheduling is broken,
21 + * use only one queue until it is fixed */
26 static const struct net_device_ops mvneta_netdev_ops = {
27 .ndo_open = mvneta_open,
28 .ndo_stop = mvneta_stop,
29 @@ -3994,6 +4004,7 @@ static const struct net_device_ops mvnet
30 .ndo_fix_features = mvneta_fix_features,
31 .ndo_get_stats64 = mvneta_get_stats64,
32 .ndo_do_ioctl = mvneta_ioctl,
33 + .ndo_select_queue = mvneta_select_queue,
36 const struct ethtool_ops mvneta_eth_tool_ops = {