search for: ndo_select_queue

...all other XPS functionality such as allowing use to configure their own transmission steering strategy. So this patch switches to use XPS and suggest a default mapping when the number of cpus is equal to the number of queues. With XPS support, there's no need for keeping per-cpu vq_index and .ndo_select_queue(), so they were removed also. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- Changes from V1: - use cpumask_of() instead of allocate dynamically drivers/net/virtio_net.c | 48 +----...

...all other XPS functionality such as allowing use to configure their own transmission steering strategy. So this patch switches to use XPS and suggest a default mapping when the number of cpus is equal to the number of queues. With XPS support, there's no need for keeping per-cpu vq_index and .ndo_select_queue(), so they were removed also. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- Changes from V1: - use cpumask_of() instead of allocate dynamically drivers/net/virtio_net.c | 48 +----...

...all other XPS functionality such as allowing use to configure their own transmission steering strategy. So this patch switches to use XPS and suggest a default mapping when the number of cpus is equal to the number of queues. With XPS support, there's no need for keeping per-cpu vq_index and .ndo_select_queue(), so they were removed also. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/virtio_net.c | 55 +++++++-------------------------------------- 1 files changed, 9 insertio...

...all other XPS functionality such as allowing use to configure their own transmission steering strategy. So this patch switches to use XPS and suggest a default mapping when the number of cpus is equal to the number of queues. With XPS support, there's no need for keeping per-cpu vq_index and .ndo_select_queue(), so they were removed also. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/virtio_net.c | 55 +++++++-------------------------------------- 1 files changed, 9 insertio...

...all other XPS functionality such as allowing user to configure their own transmission steering strategy. So this patch switches to use XPS and suggest a default mapping when the number of cpus is equal to the number of queues. With XPS support, there's no need for keeping per-cpu vq_index and .ndo_select_queue(), so they were removed also. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Acked-by: Rusty Russell <rusty at rustcorp.com.au> Acked-by: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com>...

...all other XPS functionality such as allowing user to configure their own transmission steering strategy. So this patch switches to use XPS and suggest a default mapping when the number of cpus is equal to the number of queues. With XPS support, there's no need for keeping per-cpu vq_index and .ndo_select_queue(), so they were removed also. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Acked-by: Rusty Russell <rusty at rustcorp.com.au> Acked-by: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com>...

...ware problem. lower dev might stop responding down the road. > > > +static const struct net_device_ops failover_dev_ops = { > > > + .ndo_open = failover_open, > > > + .ndo_stop = failover_close, > > > + .ndo_start_xmit = failover_start_xmit, > > > + .ndo_select_queue = failover_select_queue, > > > + .ndo_get_stats64 = failover_get_stats, > > > + .ndo_change_mtu = failover_change_mtu, > > > + .ndo_set_rx_mode = failover_set_rx_mode, > > > + .ndo_validate_addr = eth_validate_addr, > > > + .ndo_features_check = passthr...

...ity such as allowing use to configure > their own transmission steering strategy. > > So this patch switches to use XPS and suggest a default mapping when > the number of cpus is equal to the number of queues. With XPS support, > there's no need for keeping per-cpu vq_index and .ndo_select_queue(), > so they were removed also. > > Cc: Rusty Russell <rusty at rustcorp.com.au> > Cc: Michael S. Tsirkin <mst at redhat.com> > Signed-off-by: Jason Wang <jasowang at redhat.com> Acked-by: Michael S. Tsirkin <mst at redhat.com> > --- > Changes from V1...

...ity such as allowing use to configure > their own transmission steering strategy. > > So this patch switches to use XPS and suggest a default mapping when > the number of cpus is equal to the number of queues. With XPS support, > there's no need for keeping per-cpu vq_index and .ndo_select_queue(), > so they were removed also. > > Cc: Rusty Russell <rusty at rustcorp.com.au> > Cc: Michael S. Tsirkin <mst at redhat.com> > Signed-off-by: Jason Wang <jasowang at redhat.com> More lines deleted that added is good :) But how does the result perform? About the s...

...user to configure > their own transmission steering strategy. > > So this patch switches to use XPS and suggest a default mapping when > the number of cpus is equal to the number of queues. With XPS support, > there's no need for keeping per-cpu vq_index and .ndo_select_queue(), > so they were removed also. > > Cc: Rusty Russell <rusty at rustcorp.com.au> > Cc: Michael S. Tsirkin <mst at redhat.com> > Acked-by: Rusty Russell <rusty at rustcorp.com.au> > Acked-by: Michael S. Tsirkin <mst at redhat.com> &g...

...o *finfo = netdev_priv(dev); > + struct net_device *primary_dev; > + u16 txq; > + > + rcu_read_lock(); > + primary_dev = rcu_dereference(finfo->primary_dev); > + if (primary_dev) { > + const struct net_device_ops *ops = primary_dev->netdev_ops; > + > + if (ops->ndo_select_queue) > + txq = ops->ndo_select_queue(primary_dev, skb, > + accel_priv, fallback); > + else > + txq = fallback(primary_dev, skb); > + > + qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; > + > + return txq; > + } > + > + txq = skb...

...o *finfo = netdev_priv(dev); > + struct net_device *primary_dev; > + u16 txq; > + > + rcu_read_lock(); > + primary_dev = rcu_dereference(finfo->primary_dev); > + if (primary_dev) { > + const struct net_device_ops *ops = primary_dev->netdev_ops; > + > + if (ops->ndo_select_queue) > + txq = ops->ndo_select_queue(primary_dev, skb, > + accel_priv, fallback); > + else > + txq = fallback(primary_dev, skb); > + > + qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; > + > + return txq; > + } > + > + txq = skb...

...ad. > >> > > +static const struct net_device_ops failover_dev_ops = { >> > > + .ndo_open = failover_open, >> > > + .ndo_stop = failover_close, >> > > + .ndo_start_xmit = failover_start_xmit, >> > > + .ndo_select_queue = failover_select_queue, >> > > + .ndo_get_stats64 = failover_get_stats, >> > > + .ndo_change_mtu = failover_change_mtu, >> > > + .ndo_set_rx_mode = failover_set_rx_mode, >> > > + .ndo_validate_addr = eth_validate_addr...

...lity such as allowing use to configure > their own transmission steering strategy. > > So this patch switches to use XPS and suggest a default mapping when > the number of cpus is equal to the number of queues. With XPS support, > there's no need for keeping per-cpu vq_index and .ndo_select_queue(), > so they were removed also. > > Cc: Rusty Russell <rusty at rustcorp.com.au> > Cc: Michael S. Tsirkin <mst at redhat.com> > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/net/virtio_net.c | 55 +++++++---------------------------------...

...ity such as allowing use to configure > their own transmission steering strategy. > > So this patch switches to use XPS and suggest a default mapping when > the number of cpus is equal to the number of queues. With XPS support, > there's no need for keeping per-cpu vq_index and .ndo_select_queue(), > so they were removed also. > > Cc: Rusty Russell <rusty at rustcorp.com.au> > Cc: Michael S. Tsirkin <mst at redhat.com> > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > Changes from V1: > - use cpumask_of() instead of allocate dynamically...

...fallback_t fallback) +{ + struct failover_info *finfo = netdev_priv(dev); + struct net_device *primary_dev; + u16 txq; + + rcu_read_lock(); + primary_dev = rcu_dereference(finfo->primary_dev); + if (primary_dev) { + const struct net_device_ops *ops = primary_dev->netdev_ops; + + if (ops->ndo_select_queue) + txq = ops->ndo_select_queue(primary_dev, skb, + accel_priv, fallback); + else + txq = fallback(primary_dev, skb); + + qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; + + return txq; + } + + txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; +...

...ct_queue_fallback_t fallback) +{ + struct net_failover_info *nfo_info = netdev_priv(dev); + struct net_device *primary_dev; + u16 txq; + + primary_dev = rcu_dereference(nfo_info->primary_dev); + if (primary_dev) { + const struct net_device_ops *ops = primary_dev->netdev_ops; + + if (ops->ndo_select_queue) + txq = ops->ndo_select_queue(primary_dev, skb, + accel_priv, fallback); + else + txq = fallback(primary_dev, skb); + + qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; + + return txq; + } + + txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; +...

...; + struct net_device *primary_dev; >> + u16 txq; >> + >> + rcu_read_lock(); >> + primary_dev = rcu_dereference(finfo->primary_dev); >> + if (primary_dev) { >> + const struct net_device_ops *ops = primary_dev->netdev_ops; >> + >> + if (ops->ndo_select_queue) >> + txq = ops->ndo_select_queue(primary_dev, skb, >> + accel_priv, fallback); >> + else >> + txq = fallback(primary_dev, skb); >> + >> + qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; >> + >> + return txq;...

...fallback) +{ + struct net_failover_info *nfo_info = netdev_priv(dev); + struct net_device *primary_dev; + u16 txq; + + rcu_read_lock(); + primary_dev = rcu_dereference(nfo_info->primary_dev); + if (primary_dev) { + const struct net_device_ops *ops = primary_dev->netdev_ops; + + if (ops->ndo_select_queue) + txq = ops->ndo_select_queue(primary_dev, skb, + accel_priv, fallback); + else + txq = fallback(primary_dev, skb); + + qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; + + return txq; + } + + txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; +...

The main motivation for this patch is to enable cloud service providers to provide an accelerated datapath to virtio-net enabled VMs in a transparent manner with no/minimal guest userspace changes. This also enables hypervisor controlled live migration to be supported with VMs that have direct attached SR-IOV VF devices. Patch 1 introduces a new feature bit VIRTIO_NET_F_STANDBY that can be used