Restrict this header inclusion to its real users.
Fixes: 028669bc9f ("eal: hide shared memory config")
Cc: stable@dpdk.org
Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
For each driver where we optionally disable it, add in the reason why it's
being disabled, so the user knows how to fix it.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>
The vmbus scan code can just skip non-network devices.
More importantly, this fixes the bug where some vmbus devices
don't have all the attributes (like monitor_id) and a single
failure would cause the scan to break the loop.
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
If secondary process attempt to mmap the resource resulted in
the wrong address, then it would leave behind the bad mmap.
Coverity issue: 337675, 337664
Fixes: 2a28a502c6 ("bus/vmbus: map ring in secondary process")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Define variables for "is_linux", "is_freebsd" and "is_windows"
to make the code shorter for comparisons and more readable.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
Acked-by: Luca Boccassi <bluca@debian.org>
The secondary mapping function was duplicating the code
used to search the uio_resource list.
Skip the unwinding since map failure already makes device
unusable.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Need to remember primary channel in secondary process.
Then use it to iterate over subchannels in secondary
process mapping setup.
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
If vmbus is run on older kernel (without all the uio mappings),
then the bus driver should stop when it hits the missing mappings
rather than recording the empty values.
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
The code was testing the result of mmap incorrectly.
I.e the test that a local pointer is not MAP_FAILED would
always succeed and therefore hid any potential problems.
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
The secondary process doesn't correctly map the second
and later resources because it doesn't change the offset.
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Rename the macro and all instances in DPDK code, but keep a copy of
the old macro defined for legacy code linking against DPDK
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Rename the macro to make things shorter and more comprehensible. For
both meson and make builds, keep the old macro around for backward
compatibility.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
When using multiple queues, there was a race with the kernel
in setting up the second channel. This regression is due to a kernel change
which does not allow accessing sysfs files for Hyper-V channels that are not opened.
The fix is simple, just move the logic to detect not ready
sub channels earlier in the existing loop.
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Reported-by: Mohammed Gamal <mgamal@redhat.com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
If sysfs directory was incorrectly formatted then the vmbus
setup code would leak a directory handle in the error path.
Coverity issue: 302848
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
A constructor is usually declared with RTE_INIT* macros.
As it is a static function, no need to declare before its definition.
The macro is used directly in the function definition.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
The function rte_dev_is_probed() is added in order to improve semantic
and enforce proper check of the probing status of a device.
It will answer this rte_device query:
Is it already successfully probed or not?
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Andrew Rybchenko <arybchenko@solarflare.com>
Tested-by: Andrew Rybchenko <arybchenko@solarflare.com>
The PCI mapping requires to know the PCI driver to use,
even before the probing is done. That's why the PCI driver is
referenced early inside the PCI device structure. See
commit 1d20a073fa ("bus/pci: reference driver structure before mapping")
However the rte_driver does not need to be referenced in rte_device
before the device probing is done.
By moving back this assignment at the end of the device probing,
it becomes possible to make clear the status of a rte_device.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Andrew Rybchenko <arybchenko@solarflare.com>
Tested-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Rosen Xu <rosen.xu@intel.com>
When a device is added with a devargs (hotplug or whitelist),
the bus pointer can be retrieved via its devargs.
But there is no such devargs.bus in case of standard scan.
A pointer to the rte_bus handle is added to rte_device.
When a device is allocated (during a scan),
the pointer to its bus is assigned.
It will make possible to remove a rte_device,
using the function pointer from its bus.
The function rte_bus_find_by_device() becomes useless,
and may be removed later.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
This function is not used by netvsc driver yet.
Still the code should handle case where device driver returns
zero (due to rescind).
Coverity issue: 302871
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Use strlcpy rather than strncpy to avoid any issues about
null termination.
Coverity issue 302859
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Fix bug reported by Coverity where directory being scanned was
not closed in error path (leaking file descriptor).
Coverity issue: 302848
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Don't signal host that receive ring has been read until all events
have been processed. This reduces the number of guest exits and
therefore improves performance.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
The dependency on libuuid is useless because the required code
is embedded in EAL, see commit 6bc67c497a ("eal: add uuid API").
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
The driver supports Hyper-V networking directly like
virtio for KVM or vmxnet3 for VMware.
This code is based off of the FreeBSD driver. The file and variable
names are kept the same to help with understanding (with most of the
BSD style warts removed).
This version supports the latest NetVSP 6.1 version and
older versions.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
This patch adds support for an additional bus type Virtual Machine BUS
(VMBUS) on Microsoft Hyper-V in Windows 10, Windows Server 2016
and Azure. Most of this code was extracted from FreeBSD and some of
this is from earlier code donated by Brocade.
Only Linux is supported at present, but the code is split
to allow future FreeBSD and Windows support.
The bus support relies on the uio_hv_generic driver from Linux
kernel 4.16. Multiple queue support requires additional sysfs
interfaces which is in kernel 5.0 (a.k.a 4.17).
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
