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Hi, This is a proof of concept of GPU forwarding for Linux guest on Linux host. I'd like to get comments and suggestions from community before I put more time on it. To summarize what it is: 1. It's a solution to bring GPU acceleration for Linux vm guest on Linux host. It could works with different GPU although the current proof of concept only works with Intel GPU. 2. The basic idea

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..cd47b97771e3 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index ca3...

...; index 1de51811fcb4..cd47b97771e3 100644 > --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c > +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c > @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) > ring->cb_ptr, ring->end_ptr); > } > > -static void bcmgenet_timeout(struct net_device *dev) > +static void bcmgenet_timeout(struct net_device *dev, int txqueue) > { > struct bcmgenet_priv *priv = netdev_priv(dev); > u32 int0_enable = 0; > diff --git a/drivers/net/ethernet/broadcom/tg3...

Hi Michael, Em sex., 22 de nov. de 2019 ?s 07:31, Michael S. Tsirkin <mst at redhat.com> escreveu: > > On Thu, Nov 21, 2019 at 10:36:36PM -0300, Julio Faracco wrote: > > Driver virtio_net is not handling error events for TX provided by > > dev_watchdog. This event is reached when transmission queue is having > > problems to transmit packets. This could happen for any

Hi Michael, Em sex., 22 de nov. de 2019 ?s 07:31, Michael S. Tsirkin <mst at redhat.com> escreveu: > > On Thu, Nov 21, 2019 at 10:36:36PM -0300, Julio Faracco wrote: > > Driver virtio_net is not handling error events for TX provided by > > dev_watchdog. This event is reached when transmission queue is having > > problems to transmit packets. This could happen for any

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..cd47b97771e3 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom/sb1250-m...

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..cd47b97771e3 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom/sb1250-m...

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..cd47b97771e3 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom/sb1250-m...

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..cd47b97771e3 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom...

On Sun, 24 Nov 2019 18:29:49 -0500, Michael S. Tsirkin wrote: > netdev: pass the stuck queue to the timeout handler > > This allows incrementing the correct timeout statistic without any mess. > Down the road, devices can learn to reset just the specific queue. FWIW Acked-by: Jakub Kicinski <jakub.kicinski at netronome.com>

...ff..32f1245a69e2 100644 > > --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c > > +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c > > @@ -3055,7 +3055,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) > > ring->cb_ptr, ring->end_ptr); > > } > > > > -static void bcmgenet_timeout(struct net_device *dev) > > +static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue) > > { > > struct bcmgenet_priv *priv = netdev_priv(dev); > > u32 int0_enable = 0; > > d...

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..841147891c53 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom...

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..841147891c53 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom...

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..841147891c53 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom...

...ethernet/broadcom/genet/bcmgenet.c index 1de51811fcb4..841147891c53 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3053,7 +3053,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom...

...ethernet/broadcom/genet/bcmgenet.c index 120fa05a39ff..32f1245a69e2 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3055,7 +3055,7 @@ static void bcmgenet_dump_tx_queue(struct bcmgenet_tx_ring *ring) ring->cb_ptr, ring->end_ptr); } -static void bcmgenet_timeout(struct net_device *dev) +static void bcmgenet_timeout(struct net_device *dev, unsigned int txqueue) { struct bcmgenet_priv *priv = netdev_priv(dev); u32 int0_enable = 0; diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom...

This series add two important features. One of them changes the .ndo_tx_timeout to include an extra parameter to identify the stuck queue. Many drivers are using a nester loop to identify which queue is stooped/stucked. This is a redundant work since dev_watchdog is doing exactly the same thing. This is so interesting for other drivers to in terms of code optimization. The second part (second

This series add two important features. One of them changes the .ndo_tx_timeout to include an extra parameter to identify the stuck queue. Many drivers are using a nester loop to identify which queue is stooped/stucked. This is a redundant work since dev_watchdog is doing exactly the same thing. This is so interesting for other drivers to in terms of code optimization. The second part (second

A bunch of drivers want to know which tx queue triggered a timeout, and virtio wants to do the same. We actually have the info to hand, let's just pass it on to drivers. Note: tested with an experimental virtio patch by Julio. That patch itself isn't ready yet though, so not included. Other drivers compiled only. Michael S. Tsirkin (3): netdev: pass the stuck queue to the timeout

Sorry about the churn, v10 was based on net - not on net-next by mistake. A bunch of drivers want to know which tx queue triggered a timeout, and virtio wants to do the same. We actually have the info to hand, let's just pass it on to drivers. Note: tested with an experimental virtio patch by Julio. That patch itself isn't ready yet though, so not included. Other drivers compiled only.