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This gives small but noticeable rx performance improvement (2-3%) and will allow exploiting future napi improvement. Signed-off-by: Paolo Abeni <pabeni at redhat.com> --- drivers/net/virtio_net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index fb0eae4..49d84e5 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -260,7 +260,7 @@ static s...

This gives small but noticeable rx performance improvement (2-3%) and will allow exploiting future napi improvement. Signed-off-by: Paolo Abeni <pabeni at redhat.com> --- drivers/net/virtio_net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index fb0eae4..49d84e5 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -260,7 +260,7 @@ static s...

This gives small but noticeable rx performance improvement (2-3%) and will allow exploiting future napi improvement. Signed-off-by: Paolo Abeni <pabeni at redhat.com> -- v2: replace also netdev_alloc_skb_ip_align() invocation in add_recvbuf_small(), suggested by Venkatesh Srinivas --- drivers/net/virtio_net.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net....

This gives small but noticeable rx performance improvement (2-3%) and will allow exploiting future napi improvement. Signed-off-by: Paolo Abeni <pabeni at redhat.com> -- v2: replace also netdev_alloc_skb_ip_align() invocation in add_recvbuf_small(), suggested by Venkatesh Srinivas --- drivers/net/virtio_net.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net....

...423 427 418 A packet weight of 256 gives peek performances in under all the tested scenarios. No measurable regression in unidirectional performance tests has been detected. [1] https://developers.redhat.com/blog/2017/06/05/measuring-and-comparing-open-vswitch-performance/ Signed-off-by: Paolo Abeni <pabeni at redhat.com> --- drivers/vhost/net.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index bbf38befefb2..c4b49fca4871 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -46,8 +46,10 @@ MODULE_PARM...

...sis-open.org/archives/virtio-dev/201603/msg00001.html The second patch adds a user of the bit, and a warning when the guest changes the MTU from the hypervisor advised MTU. Future patches may add more thorough error handling. v2: * Whitespace and code style cleanups from Sergei Shtylyov and Paolo Abeni * Additional test before printing a warning Aaron Conole (2): virtio: Start feature MTU support virtio_net: Read the advised MTU drivers/net/virtio_net.c | 12 ++++++++++++ include/uapi/linux/virtio_net.h | 3 +++ 2 files changed, 15 insertions(+) -- 2.5.0

...sis-open.org/archives/virtio-dev/201603/msg00001.html The second patch adds a user of the bit, and a warning when the guest changes the MTU from the hypervisor advised MTU. Future patches may add more thorough error handling. v2: * Whitespace and code style cleanups from Sergei Shtylyov and Paolo Abeni * Additional test before printing a warning Aaron Conole (2): virtio: Start feature MTU support virtio_net: Read the advised MTU drivers/net/virtio_net.c | 12 ++++++++++++ include/uapi/linux/virtio_net.h | 3 +++ 2 files changed, 15 insertions(+) -- 2.5.0

On Thu, Mar 17, 2016 at 7:44 AM, Paolo Abeni <pabeni at redhat.com> wrote: > > This gives small but noticeable rx performance improvement (2-3%) > and will allow exploiting future napi improvement. > > Signed-off-by: Paolo Abeni <pabeni at redhat.com> > --- Worked in my tests, though the performance win was in t...

On Thu, 30 Mar 2023 12:48:22 +0200, Paolo Abeni <pabeni at redhat.com> wrote: > On Tue, 2023-03-28 at 20:04 +0800, Xuan Zhuo wrote: > > @@ -949,15 +1042,11 @@ static struct sk_buff *receive_small(struct net_device *dev, > > { > > struct sk_buff *skb; > > struct bpf_prog *xdp_prog; > > - unsigned int xd...

Hi, On Tue, 2023-03-07 at 09:49 +0800, Xuan Zhuo wrote: > On Mon, 6 Mar 2023 12:58:22 -0500, "Michael S. Tsirkin" <mst at redhat.com> wrote: > > On Mon, Mar 06, 2023 at 12:15:33PM +0800, Xuan Zhuo wrote: > > > If the queue of xdp xmit is not an independent queue, then when the xdp > > > xmit used all the desc, the xmit from the __dev_queue_xmit() may

On Thu, Jul 27, 2023 at 03:28:32PM +0200, Paolo Abeni wrote: > On Tue, 2023-07-25 at 16:07 +0300, Gavin Li wrote: > > Add interrupt_coalesce config in send_queue and receive_queue to cache user > > config. > > > > Send per virtqueue interrupt moderation config to underlying device in > > order to have more efficient i...

...8dd014adf David Stevens 2010-07-27 711 size_t vhost_len, sock_len; 2e26af79b Asias He 2013-05-07 712 struct socket *sock; ba7438aed Al Viro 2014-12-10 713 struct iov_iter fixup; 0960b6417 Jason Wang 2015-02-15 714 __virtio16 num_buffers; db688c24e Paolo Abeni 2018-04-24 715 int recv_pkts = 0; 8dd014adf David Stevens 2010-07-27 716 aaa3149bb Jason Wang 2018-03-26 717 mutex_lock_nested(&vq->mutex, 0); 2e26af79b Asias He 2013-05-07 718 sock = vq->private_data; 2e26af79b Asias He 2013-05-07 719...

On Tue, 2023-07-25 at 16:07 +0300, Gavin Li wrote: > Add interrupt_coalesce config in send_queue and receive_queue to cache user > config. > > Send per virtqueue interrupt moderation config to underlying device in > order to have more efficient interrupt moderation and cpu utilization of > guest VM. > > Additionally, address all the VQs when updating the global

...ill convert MSG_SENDPAGE_NOTLAST to MSG_MORE, which is now unnecessary. Signed-off-by: David Howells <dhowells at redhat.com> cc: "David S. Miller" <davem at davemloft.net> cc: Eric Dumazet <edumazet at google.com> cc: Jakub Kicinski <kuba at kernel.org> cc: Paolo Abeni <pabeni at redhat.com> cc: Jens Axboe <axboe at kernel.dk> cc: Matthew Wilcox <willy at infradead.org> cc: bpf at vger.kernel.org cc: dccp at vger.kernel.org cc: linux-afs at lists.infradead.org cc: linux-arm-msm at vger.kernel.org cc: linux-can at vger.kernel.org cc: linux-crypto...

...when the guest changes > the MTU from the hypervisor advised MTU. Future patches may add more thorough > error handling. How do you see this interacting with VMs getting MTU settings via DHCP? rick jones > > v2: > * Whitespace and code style cleanups from Sergei Shtylyov and Paolo Abeni > * Additional test before printing a warning > > Aaron Conole (2): > virtio: Start feature MTU support > virtio_net: Read the advised MTU > > drivers/net/virtio_net.c | 12 ++++++++++++ > include/uapi/linux/virtio_net.h | 3 +++ > 2 files changed, 15 in...

...1603/msg00001.html > > The second patch adds a user of the bit, and a warning when the guest changes > the MTU from the hypervisor advised MTU. Future patches may add more thorough > error handling. > > v2: > * Whitespace and code style cleanups from Sergei Shtylyov and Paolo Abeni > * Additional test before printing a warning > > Aaron Conole (2): > virtio: Start feature MTU support > virtio_net: Read the advised MTU > > drivers/net/virtio_net.c | 12 ++++++++++++ > include/uapi/linux/virtio_net.h | 3 +++ > 2 files changed, 15 inser...

Hello, On Sun, 2023-01-29 at 18:51 +0200, Leon Romanovsky wrote: > In netdev common pattern, extack pointer is forwarded to the drivers > to be filled with error message. However, the caller can easily > overwrite the filled message. > > Instead of adding multiple "if (!extack->_msg)" checks before any > NL_SET_ERR_MSG() call, which appears after call to the

On Tue, 2023-08-01 at 16:36 +0300, Arseniy Krasnov wrote: > > On 01.08.2023 16:34, Paolo Abeni wrote: > > On Sun, 2023-07-30 at 11:59 +0300, Arseniy Krasnov wrote: > > > +static int virtio_transport_fill_skb(struct sk_buff *skb, > > > + struct virtio_vsock_pkt_info *info, > > > + size_t len, > > > + bool zcopy) > > >...

Hi, On Mon, 2023-08-28 at 14:34 -0700, Shannon Nelson wrote: > Finally following up to Simon's suggestion for some kdoc attention > on struct virtio_pci_modern_device. > > Link: https://lore.kernel.org/netdev/ZE%2FQS0lnUvxFacjf at corigine.com/ > Cc: Simon Horman <simon.horman at corigine.com> > Signed-off-by: Shannon Nelson <shannon.nelson at amd.com> IMHO

...hat.com> (maintainer:VM SOCKETS (AF_VSOCK)) "David S. Miller" <davem at davemloft.net> (maintainer:NETWORKING [GENERAL]) Eric Dumazet <edumazet at google.com> (maintainer:NETWORKING [GENERAL]) Jakub Kicinski <kuba at kernel.org> (maintainer:NETWORKING [GENERAL]) Paolo Abeni <pabeni at redhat.com> (maintainer:NETWORKING [GENERAL]) virtualization at lists.linux-foundation.org (open list:VM SOCKETS (AF_VSOCK)) netdev at vger.kernel.org (open list:VM SOCKETS (AF_VSOCK)) linux-kernel at vger.kernel.org (open list) Thanks, Stefano [1] https://www.kernel.org/doc/html...