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On Fri, 30 Dec 2016 13:20:51 +0800 Jason Wang <jasowang at redhat.com> wrote: > diff --git a/drivers/net/tun.c b/drivers/net/tun.c > index cd8e02c..a268ed9 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -75,6 +75,10 @@ > > #include <linux/uaccess.h> > > +static int rx_batched; > +module_param(rx_batched, int, 0444); > +MODULE_PARM_DESC(rx_batched, "Number of packets batched in rx&quo...

On Fri, 30 Dec 2016 13:20:51 +0800 Jason Wang <jasowang at redhat.com> wrote: > diff --git a/drivers/net/tun.c b/drivers/net/tun.c > index cd8e02c..a268ed9 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -75,6 +75,10 @@ > > #include <linux/uaccess.h> > > +static int rx_batched; > +module_param(rx_batched, int, 0444); > +MODULE_PARM_DESC(rx_batched, "Number of packets batched in rx&quo...

...ueue *q, return -EINVAL; if (virtio_net_hdr_from_skb(skb, &vnet_hdr, - macvtap_is_little_endian(q))) + macvtap_is_little_endian(q), true)) BUG(); if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) != diff --git a/drivers/net/tun.c b/drivers/net/tun.c index cd8e02c..2cd10b2 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1360,7 +1360,7 @@ static ssize_t tun_put_user(struct tun_struct *tun, return -EINVAL; if (virtio_net_hdr_from_skb(skb, &gso, - tun_is_little_endian(tun))) { + tun_is_little_endian(tun), true)) { str...

...ueue *q, return -EINVAL; if (virtio_net_hdr_from_skb(skb, &vnet_hdr, - macvtap_is_little_endian(q))) + macvtap_is_little_endian(q), true)) BUG(); if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) != diff --git a/drivers/net/tun.c b/drivers/net/tun.c index cd8e02c..2cd10b2 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1360,7 +1360,7 @@ static ssize_t tun_put_user(struct tun_struct *tun, return -EINVAL; if (virtio_net_hdr_from_skb(skb, &gso, - tun_is_little_endian(tun))) { + tun_is_little_endian(tun), true)) { str...

...&vnet_hdr, >> - macvtap_is_little_endian(q))) >> + macvtap_is_little_endian(q), true)) >> BUG(); >> >> if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) != >> diff --git a/drivers/net/tun.c b/drivers/net/tun.c >> index cd8e02c..2cd10b2 100644 >> --- a/drivers/net/tun.c >> +++ b/drivers/net/tun.c >> @@ -1360,7 +1360,7 @@ static ssize_t tun_put_user(struct tun_struct *tun, >> return -EINVAL; >> >> if (virtio_net_hdr_from_skb(skb, &gso, >> - tun_is_little_end...

...&vnet_hdr, >> - macvtap_is_little_endian(q))) >> + macvtap_is_little_endian(q), true)) >> BUG(); >> >> if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) != >> diff --git a/drivers/net/tun.c b/drivers/net/tun.c >> index cd8e02c..2cd10b2 100644 >> --- a/drivers/net/tun.c >> +++ b/drivers/net/tun.c >> @@ -1360,7 +1360,7 @@ static ssize_t tun_put_user(struct tun_struct *tun, >> return -EINVAL; >> >> if (virtio_net_hdr_from_skb(skb, &gso, >> - tun_is_little_end...

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 -+%

...; > - macvtap_is_little_endian(q))) > > > + macvtap_is_little_endian(q), true)) > > > BUG(); > > > if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) != > > > diff --git a/drivers/net/tun.c b/drivers/net/tun.c > > > index cd8e02c..2cd10b2 100644 > > > --- a/drivers/net/tun.c > > > +++ b/drivers/net/tun.c > > > @@ -1360,7 +1360,7 @@ static ssize_t tun_put_user(struct tun_struct *tun, > > > return -EINVAL; > > > if (virtio_net_hdr_from_skb(skb, &gso, > > > -...

...hed packets were specified through a module parameter. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/tun.c | 50 ++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 44 insertions(+), 6 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index cd8e02c..a268ed9 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -75,6 +75,10 @@ #include <linux/uaccess.h> +static int rx_batched; +module_param(rx_batched, int, 0444); +MODULE_PARM_DESC(rx_batched, "Number of packets batched in rx"); + /* Uncomment to enable debugging */...

...f (virtio_net_hdr_from_skb(skb, &vnet_hdr, > - macvtap_is_little_endian(q))) > + macvtap_is_little_endian(q), true)) > BUG(); > > if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) != > diff --git a/drivers/net/tun.c b/drivers/net/tun.c > index cd8e02c..2cd10b2 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -1360,7 +1360,7 @@ static ssize_t tun_put_user(struct tun_struct *tun, > return -EINVAL; > > if (virtio_net_hdr_from_skb(skb, &gso, > - tun_is_little_endian(tun))) { > + tun...

...ackets were specified through a module parameter. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/tun.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 58 insertions(+), 8 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index cd8e02c..6ea5d6d 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -75,6 +75,10 @@ #include <linux/uaccess.h> +static int rx_batched; +module_param(rx_batched, int, 0444); +MODULE_PARM_DESC(rx_batched, "Number of packets batched in rx"); + /* Uncomment to enable debugging */...

...ation to prevent bh from being disabled too long. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/tun.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 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_f...

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 -+%

...too long. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/net/tun.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++----- > 1 file changed, 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; > }; > > @@ -5...

...too long. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/net/tun.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++----- > 1 file changed, 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; > }; > > @@ -5...

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 -+%