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- 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
- @@ -3967,6 +3967,15 @@ static int mvneta_ethtool_set_wol(struct
- return ret;
- }
-
- +static u16 mvneta_select_queue(struct net_device *dev, struct sk_buff *skb,
- + void *accel_priv,
- + select_queue_fallback_t fallback)
- +{
- + /* XXX: hardware queue scheduling is broken,
- + * use only one queue until it is fixed */
- + return 0;
- +}
- +
- static const struct net_device_ops mvneta_netdev_ops = {
- .ndo_open = mvneta_open,
- .ndo_stop = mvneta_stop,
- @@ -3977,6 +3986,7 @@ static const struct net_device_ops mvnet
- .ndo_fix_features = mvneta_fix_features,
- .ndo_get_stats64 = mvneta_get_stats64,
- .ndo_do_ioctl = mvneta_ioctl,
- + .ndo_select_queue = mvneta_select_queue,
- };
-
- static const struct ethtool_ops mvneta_eth_tool_ops = {
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