From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: John Fastabend <john.fastabend@gmail.com>
Subject: [PATCH 0/6] virtio: support extra per-buffer context
Date: Wed, 29 Mar 2017 23:48:43 +0300 [thread overview]
Message-ID: <1490820507-8005-1-git-send-email-mst@redhat.com> (raw)
virtio net is resorting to hacks in order to fit all per-buffer info in a
single 64 bit value. But in fact we have some unused memory there - normally
used for indirect descriptors - that we can utilize without slowing everyone
down.
Add APIs to do exactly that, and use them to simplify mergeable
buffer handling code.
This will also easily enable switching XDP mode on/off without doing device
resets (leading to packet drops), and more optimizations.
Michael S. Tsirkin (6):
virtio: wrap find_vqs
virtio: add context flag to find vqs
virtio: allow extra context per descriptor
virtio_net: allow specifying context for rx
virtio_net: rework mergeable buffer handling
virtio_net: reduce alignment for buffers
drivers/block/virtio_blk.c | 3 +-
drivers/char/virtio_console.c | 6 +-
drivers/crypto/virtio/virtio_crypto_core.c | 3 +-
drivers/gpu/drm/virtio/virtgpu_kms.c | 3 +-
drivers/misc/mic/vop/vop_main.c | 9 ++-
drivers/net/caif/caif_virtio.c | 3 +-
drivers/net/virtio_net.c | 116 ++++++++++++++---------------
drivers/rpmsg/virtio_rpmsg_bus.c | 2 +-
drivers/s390/virtio/kvm_virtio.c | 6 +-
drivers/s390/virtio/virtio_ccw.c | 7 +-
drivers/scsi/virtio_scsi.c | 3 +-
drivers/virtio/virtio_balloon.c | 3 +-
drivers/virtio/virtio_input.c | 3 +-
drivers/virtio/virtio_mmio.c | 8 +-
drivers/virtio/virtio_pci_common.c | 18 +++--
drivers/virtio/virtio_pci_common.h | 4 +-
drivers/virtio/virtio_pci_legacy.c | 4 +-
drivers/virtio/virtio_pci_modern.c | 12 ++-
drivers/virtio/virtio_ring.c | 77 +++++++++++++++----
include/linux/virtio.h | 9 +++
include/linux/virtio_config.h | 25 ++++++-
include/linux/virtio_ring.h | 3 +
net/vmw_vsock/virtio_transport.c | 6 +-
23 files changed, 212 insertions(+), 121 deletions(-)
--
MST
next reply other threads:[~2017-03-29 20:53 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-29 20:48 Michael S. Tsirkin [this message]
2017-03-29 20:48 ` [PATCH 1/6] virtio: wrap find_vqs Michael S. Tsirkin
2017-03-29 20:48 ` Michael S. Tsirkin
2017-03-30 0:50 ` Gonglei (Arei)
2017-03-30 0:50 ` Gonglei (Arei)
2017-03-30 0:50 ` Gonglei (Arei)
2017-03-30 0:50 ` Gonglei (Arei)
2017-03-30 0:50 ` Gonglei (Arei)
2017-03-30 6:00 ` Jason Wang
2017-03-30 6:00 ` Jason Wang
2017-03-30 6:00 ` Jason Wang
2017-03-30 14:32 ` Michael S. Tsirkin
2017-03-30 14:32 ` Michael S. Tsirkin
2017-03-31 4:04 ` Jason Wang
2017-03-31 4:04 ` Jason Wang
2017-03-31 4:04 ` Jason Wang
2017-03-31 16:21 ` Michael S. Tsirkin
2017-03-31 16:21 ` Michael S. Tsirkin
2017-03-31 16:21 ` Michael S. Tsirkin
2017-03-30 14:32 ` Michael S. Tsirkin
2017-03-30 7:18 ` Cornelia Huck
2017-03-30 7:18 ` Cornelia Huck
2017-03-30 7:18 ` Cornelia Huck
2017-04-01 16:13 ` Bjorn Andersson
2017-04-01 16:13 ` Bjorn Andersson
2017-03-29 20:48 ` [PATCH 2/6] virtio: add context flag to find vqs Michael S. Tsirkin
2017-03-29 20:48 ` Michael S. Tsirkin
2017-03-30 7:17 ` Cornelia Huck
2017-03-30 7:17 ` Cornelia Huck
2017-03-30 14:57 ` Michael S. Tsirkin
2017-03-30 14:57 ` Michael S. Tsirkin
2017-03-30 7:17 ` Cornelia Huck
2017-03-29 20:48 ` [PATCH 3/6] virtio: allow extra context per descriptor Michael S. Tsirkin
2017-03-29 20:48 ` Michael S. Tsirkin
2017-03-30 7:23 ` Cornelia Huck
2017-03-30 7:23 ` Cornelia Huck
2017-03-30 14:34 ` Michael S. Tsirkin
2017-03-30 14:34 ` Michael S. Tsirkin
2017-03-29 20:48 ` [PATCH 4/6] virtio_net: allow specifying context for rx Michael S. Tsirkin
2017-03-29 20:48 ` Michael S. Tsirkin
2017-03-30 7:26 ` Cornelia Huck
2017-03-30 14:31 ` Michael S. Tsirkin
2017-03-30 14:46 ` Cornelia Huck
2017-03-30 14:46 ` Cornelia Huck
2017-03-30 14:31 ` Michael S. Tsirkin
2017-03-30 7:26 ` Cornelia Huck
2017-03-29 20:48 ` [PATCH 5/6] virtio_net: rework mergeable buffer handling Michael S. Tsirkin
2017-03-29 20:48 ` Michael S. Tsirkin
2017-03-29 20:48 ` [PATCH 6/6] virtio_net: reduce alignment for buffers Michael S. Tsirkin
2017-03-29 20:48 ` Michael S. Tsirkin
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