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qemu-patch-raspberry4/include/hw
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Michael S. Tsirkin 1c0fbfa3de virtio-net: allow increasing rx queue size 
This allows increasing the rx queue size up to 1024: unlike with tx,
guests don't put in huge S/G lists into RX so the risk of running into
the max 1024 limitation due to some off-by-one seems small.

It's helpful for users like OVS-DPDK which don't do any buffering on the
host - 1K roughly matches 500 entries in tun + 256 in the current rx
queue, which seems to work reasonably well. We could probably make do
with ~750 entries but virtio spec limits us to powers of two.
It might be a good idea to specify an s/g size limit in a future
version.

It also might be possible to make the queue size smaller down the road, 64
seems like the minimal value which will still work (as guests seem to
assume a queue full of 1.5K buffers is enough to process the largest
incoming packet, which is ~64K).  No one actually asked for this, and
with virtio 1 guests can reduce ring size without need for host
configuration, so don't bother with this for now.

Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Jason Wang <jasowang@redhat.com>
Suggested-by: Patrik Hermansson <phermansson@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-09-27 17:54:21 +08:00
..
acpi hw/i386: AMD IOMMU IVRS table 2016-09-24 01:02:01 +03:00
arm aspeed-soc: provide a framework to add new SoCs 2016-09-22 18:13:05 +01:00
audio Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
block block/qdev: Allow configuring rerror/werror with qdev properties 2016-07-13 13:32:27 +02:00
char Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
cpu qapi: keep names in 'CpuInstanceProperties' in sync with struct CPUCore 2016-06-27 13:15:06 +10:00
cris Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
display Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
dma dma: xlnx-zynq-devcfg: Fix up XLNX_ZYNQ_DEVCFG_R_MAX 2016-09-22 18:13:08 +01:00
gpio Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
i2c Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
i386 hw/i386: AMD IOMMU IVRS table 2016-09-24 01:02:01 +03:00
ide portio: keep references on portio 2016-09-08 18:05:21 +04:00
input adb-keys.h: initial commit 2016-09-23 10:29:40 +10:00
intc gic: provide defines for v2/v3 targetlist sizes 2016-07-14 16:51:37 +01:00
ipack ipack: Update e-mail address 2016-05-18 15:04:27 +03:00
ipmi ipmi: rework the fwinfo to be fetched from the interface 2016-06-07 15:36:54 +03:00
isa portio: keep references on portio 2016-09-08 18:05:21 +04:00
kvm hw: move headers to include/ 2013-04-08 18:13:10 +02:00
lm32 hmp: Name HMP info handler functions hmp_info_SUBCOMMAND() 2015-02-18 11:58:50 +01:00
m68k m68k: include cpu-qom.h in files that require M68KCPU 2016-05-19 16:42:27 +02:00
mem nvdimm: support nvdimm label 2016-06-24 05:13:57 +03:00
mips hw/mips/cps: create GIC block inside CPS 2016-07-12 09:10:13 +01:00
misc aspeed: add a ram_size property to the memory controller 2016-09-22 18:13:06 +01:00
net cadence_gem: Add support for screening 2016-09-22 18:13:07 +01:00
nvram * Updated fw_cfg option ROM to include DMA support 2016-07-14 16:49:18 +01:00
pci hw/pci: Prepare for AMD IOMMU 2016-09-23 19:03:56 +03:00
pci-host spapr_pci: Add numa node id 2016-09-23 12:39:07 +10:00
ppc ppc/xics: An ICS with offset 0 is assumed to be uninitialized 2016-09-23 12:39:07 +10:00
s390x s390x/kvm: disable cpu model for the 2.7 machine 2016-09-19 11:05:51 +02:00
scsi Remove unused function declarations 2016-09-15 15:32:22 +03:00
sd Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
sh4 Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
smbios Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
sparc Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ssi Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
timer Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
tricore Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
unicore32 Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
usb Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
vfio Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
virtio virtio-net: allow increasing rx queue size 2016-09-27 17:54:21 +08:00
watchdog Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
xen xen: handle inbound migration of VMs without ioreq server pages 2016-08-12 16:38:30 -07:00
boards.h machine: use class base init generated name 2016-09-08 18:05:21 +04:00
bt.h Remove unused function declarations 2016-09-15 15:32:22 +03:00
compat.h virtio-pci: reduce modern_mem_bar size 2016-09-09 20:58:34 +03:00
devices.h arm: fix location of some include files 2013-04-15 15:16:01 +02:00
elf_ops.h loader: Add AddressSpace loading support to ELFs 2016-09-22 18:13:08 +01:00
empty_slot.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
fw-path-provider.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
hotplug.h qdev: hotplug: Introduce HotplugHandler.pre_plug() callback 2016-06-17 16:33:48 +10:00
hw.h hw: clean up hw/hw.h includes 2016-05-19 16:42:30 +02:00
ide.h Call pci_piix3_xen_ide_unplug from unplug_disks 2014-02-20 17:28:08 +00:00
irq.h irq: Remove qemu_irq_intercept_out 2014-10-23 16:41:25 +02:00
loader.h loader: Add AddressSpace loading support to targphys 2016-09-22 18:13:08 +01:00
nmi.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
pcmcia.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
platform-bus.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
ptimer.h hw/ptimer: Introduce timer policy feature 2016-09-22 18:13:06 +01:00
qdev-core.h bus: simplify name handling 2016-09-08 18:05:22 +04:00
qdev-dma.h qdev: Remove hex8/32/64 property types 2014-02-14 21:12:04 +01:00
qdev-properties.h block/qdev: Allow configuring rerror/werror with qdev properties 2016-07-13 13:32:27 +02:00
qdev.h hw: move headers to include/ 2013-04-08 18:13:10 +02:00
register.h register: Add block initialise helper 2016-07-04 13:15:22 +01:00
stream.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
sysbus.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
usb.h usb: Add QOM property "attached". 2016-06-22 12:53:26 +02:00