search for: pcpu_stat

...@@ module_param(napi_tx, bool, 0644); */ DECLARE_EWMA(pkt_len, 0, 64) +#define VF_TAKEOVER_INT (HZ / 10) + #define VIRTNET_DRIVER_VERSION "1.0.0" static const unsigned long guest_offloads[] = { @@ -117,6 +121,15 @@ struct receive_queue { char name[40]; }; +struct virtnet_vf_pcpu_stats { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; + u32 tx_dropped; +}; + struct virtnet_info { struct virtio_device *vdev; struct virtqueue *cvq; @@ -179,6 +192,11 @@ struct virtnet_info { u32 speed; unsigned long guest_offloads; + +...

...@@ module_param(napi_tx, bool, 0644); */ DECLARE_EWMA(pkt_len, 0, 64) +#define VF_TAKEOVER_INT (HZ / 10) + #define VIRTNET_DRIVER_VERSION "1.0.0" static const unsigned long guest_offloads[] = { @@ -117,6 +121,15 @@ struct receive_queue { char name[40]; }; +struct virtnet_vf_pcpu_stats { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; + u32 tx_dropped; +}; + struct virtnet_info { struct virtio_device *vdev; struct virtqueue *cvq; @@ -179,6 +192,11 @@ struct virtnet_info { u32 speed; unsigned long guest_offloads; + +...

...t; #include <linux/average.h> #include <linux/filter.h> +#include <linux/netdevice.h> +#include <linux/netpoll.h> #include <net/route.h> #include <net/xdp.h> @@ -120,6 +122,15 @@ struct receive_queue { struct xdp_rxq_info xdp_rxq; }; +struct virtnet_vf_pcpu_stats { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; + u32 tx_dropped; +}; + struct virtnet_info { struct virtio_device *vdev; struct virtqueue *cvq; @@ -182,6 +193,10 @@ struct virtnet_info { u32 speed; unsigned long guest_offloads; + +...

...MA(pkt_len, 0, 64) > > +#define VF_TAKEOVER_INT (HZ / 10) > + > #define VIRTNET_DRIVER_VERSION "1.0.0" > > static const unsigned long guest_offloads[] = { > @@ -117,6 +121,15 @@ struct receive_queue { > char name[40]; > }; > > +struct virtnet_vf_pcpu_stats { > + u64 rx_packets; > + u64 rx_bytes; > + u64 tx_packets; > + u64 tx_bytes; > + struct u64_stats_sync syncp; > + u32 tx_dropped; > +}; > + > struct virtnet_info { > struct virtio_device *vdev; > struct virtqueue *cvq; > @@ -179,6 +192,11 @@ struct virtn...

This patch series extends virtio_net to take over VF datapath by simulating a transparent bond without creating any additional netdev. I understand that there are some comments suggesting an alternate model that is based on 3 driver model(virtio_net, VF driver, a new driver virt_bond that acts as a master to virtio_net and VF). Would like to get some feedback on the right way to solve the live

This patch series enables virtio to switch over to a VF datapath when a VF netdev is present with the same MAC address. It allows live migration of a VM with a direct attached VF without the need to setup a bond/team between a VF and virtio net device in the guest. The hypervisor needs to unplug the VF device from the guest on the source host and reset the MAC filter of the VF to initiate

This patch series enables virtio to switch over to a VF datapath when a VF netdev is present with the same MAC address. It allows live migration of a VM with a direct attached VF without the need to setup a bond/team between a VF and virtio net device in the guest. The hypervisor needs to unplug the VF device from the guest on the source host and reset the MAC filter of the VF to initiate

...inux/filter.h> > +#include <linux/netdevice.h> > +#include <linux/netpoll.h> > #include <net/route.h> > #include <net/xdp.h> > > @@ -120,6 +122,15 @@ struct receive_queue { > struct xdp_rxq_info xdp_rxq; > }; > > +struct virtnet_vf_pcpu_stats { > + u64 rx_packets; > + u64 rx_bytes; > + u64 tx_packets; > + u64 tx_bytes; > + struct u64_stats_sync syncp; > + u32 tx_dropped; > +}; > + > struct virtnet_info { > struct virtio_device *vdev; >...

...inux/filter.h> > +#include <linux/netdevice.h> > +#include <linux/netpoll.h> > #include <net/route.h> > #include <net/xdp.h> > > @@ -120,6 +122,15 @@ struct receive_queue { > struct xdp_rxq_info xdp_rxq; > }; > > +struct virtnet_vf_pcpu_stats { > + u64 rx_packets; > + u64 rx_bytes; > + u64 tx_packets; > + u64 tx_bytes; > + struct u64_stats_sync syncp; > + u32 tx_dropped; > +}; > + > struct virtnet_info { > struct virtio_device *vdev; >...

...70 insertions(+), 6 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 8c1d3bd..13890ac 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -218,6 +218,7 @@ struct tun_struct { struct list_head disabled; void *security; u32 flow_count; + u32 rx_batched; struct tun_pcpu_stats __percpu *pcpu_stats; }; @@ -522,6 +523,7 @@ static void tun_queue_purge(struct tun_file *tfile) while ((skb = skb_array_consume(&tfile->tx_array)) != NULL) kfree_skb(skb); + skb_queue_purge(&tfile->sk.sk_write_queue); skb_queue_purge(&tfile->sk.sk_error_queue); }...

...70 insertions(+), 6 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index cd8e02c..6c93926 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -218,6 +218,7 @@ struct tun_struct { struct list_head disabled; void *security; u32 flow_count; + u32 rx_batched; struct tun_pcpu_stats __percpu *pcpu_stats; }; @@ -522,6 +523,7 @@ static void tun_queue_purge(struct tun_file *tfile) while ((skb = skb_array_consume(&tfile->tx_array)) != NULL) kfree_skb(skb); + skb_queue_purge(&tfile->sk.sk_write_queue); skb_queue_purge(&tfile->sk.sk_error_queue); }...

Hi: This series tries to implement tx batching support for vhost. This was done by using MSG_MORE as a hint for under layer socket. The backend (e.g tap) can then batch the packets temporarily in a list and submit it all once the number of bacthed exceeds a limitation. Tests shows obvious improvement on guest pktgen over over mlx4(noqueue) on host: Mpps -+%

Hi: This series tries to implement tx batching support for vhost. This was done by using MSG_MORE as a hint for under layer socket. The backend (e.g tap) can then batch the packets temporarily in a list and submit it all once the number of bacthed exceeds a limitation. Tests shows obvious improvement on guest pktgen over over mlx4(noqueue) on host: Mpps -+%

Hi: This series tries to implement tx batching support for vhost. This was done by using MSG_MORE as a hint for under layer socket. The backend (e.g tap) can then batch the packets temporarily in a list and submit it all once the number of bacthed exceeds a limitation. Tests shows obvious improvement on guest pktgen over over mlx4(noqueue) on host: Mpps -+%

Hi: This series tries to implement tx batching support for vhost. This was done by using MSG_MORE as a hint for under layer socket. The backend (e.g tap) can then batch the packets temporarily in a list and submit it all once the number of bacthed exceeds a limitation. Tests shows obvious improvement on guest pktgen over over mlx4(noqueue) on host: Mpps -+%

...a/drivers/net/tun.c b/drivers/net/tun.c > index cd8e02c..6c93926 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -218,6 +218,7 @@ struct tun_struct { > struct list_head disabled; > void *security; > u32 flow_count; > + u32 rx_batched; > struct tun_pcpu_stats __percpu *pcpu_stats; > }; > > @@ -522,6 +523,7 @@ static void tun_queue_purge(struct tun_file *tfile) > while ((skb = skb_array_consume(&tfile->tx_array)) != NULL) > kfree_skb(skb); > > + skb_queue_purge(&tfile->sk.sk_write_queue); > skb_queue_pur...

...a/drivers/net/tun.c b/drivers/net/tun.c > index cd8e02c..6c93926 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -218,6 +218,7 @@ struct tun_struct { > struct list_head disabled; > void *security; > u32 flow_count; > + u32 rx_batched; > struct tun_pcpu_stats __percpu *pcpu_stats; > }; > > @@ -522,6 +523,7 @@ static void tun_queue_purge(struct tun_file *tfile) > while ((skb = skb_array_consume(&tfile->tx_array)) != NULL) > kfree_skb(skb); > > + skb_queue_purge(&tfile->sk.sk_write_queue); > skb_queue_pur...

...rite_space(struct sock *sk) kill_fasync(&tfile->fasync, SIGIO, POLL_OUT); } +static int tun_xdp_one(struct tun_struct *tun, + struct tun_file *tfile, + struct xdp_buff *xdp, int *flush) +{ + struct virtio_net_hdr *gso = xdp->data_hard_start + sizeof(int); + struct tun_pcpu_stats *stats; + struct bpf_prog *xdp_prog; + struct sk_buff *skb = NULL; + u32 rxhash = 0, act; + int buflen = *(int *)xdp->data_hard_start; + int err = 0; + bool skb_xdp = false; + + xdp_prog = rcu_dereference(tun->xdp_prog); + if (xdp_prog) { + if (gso->gso_type) { + skb_xdp = true; + go...

Hi, This patches introduce virtio_net_hdr_{from,to}_skb functions for conversion of GSO information between skb and virtio_net_hdr. Mike Rapoport (6): virtio_net: add _UAPI prefix to virtio_net header guards virtio_net: introduce virtio_net_hdr_{from,to}_skb macvtap: use common code for virtio_net_hdr and skb GSO conversion tuntap: use common code for virtio_net_hdr and skb GSO

Hi, This patches introduce virtio_net_hdr_{from,to}_skb functions for conversion of GSO information between skb and virtio_net_hdr. Mike Rapoport (6): virtio_net: add _UAPI prefix to virtio_net header guards virtio_net: introduce virtio_net_hdr_{from,to}_skb macvtap: use common code for virtio_net_hdr and skb GSO conversion tuntap: use common code for virtio_net_hdr and skb GSO