On 10/1/2020 3:55 PM, Narcisa Ana Maria Vasile wrote:
From: Narcisa Vasile <navas...@microsoft.com>
The Windows netuio kernel driver provides the DPDK userspace application
with direct access to hardware, by mapping the HW registers in userspace
and allowing read/write operations from/to the device
configuration space.
Two IOCTLs are defined by the netuio interface:
* IOCTL_NETUIO_MAP_HW_INTO_USERSPACE
- used for mapping the device registers into userspace
* IOCTL_NETUIO_PCI_CONFIG_IO
- used to read/write from/into the device configuration space
Note:
Requests to map the device BARs into userspace need to be processed
in the thread context of the process that initiated the mapping request.
Otherwise, the BARs might end up mapped into an arbitrary process
address space.
EvtIoInCallerContext is used to ensure the requests are handled
in the right user thread context. Other requests (PCI config)
are sent back to the framework and processed by the EvtIoDeviceControl
callback.
Cc: Harini Ramakrishnan <harini.ramakrish...@microsoft.com>
Cc: Omar Cardona <ocard...@microsoft.com>
Cc: Dmitry Malloy <dmit...@microsoft.com>
Signed-off-by: Narcisa Vasile <navas...@microsoft.com>
---
v5:
* Changed the name of the IOCTL for clarity
windows/.gitattributes | 4 +
windows/.gitignore | 2 +
windows/netuio/README.rst | 58 +++++
windows/netuio/netuio.inf | 77 ++++++
windows/netuio/netuio.sln | 24 ++
windows/netuio/netuio.vcxproj | 113 +++++++++
windows/netuio/netuio.vcxproj.filters | 54 +++++
windows/netuio/netuio_dev.c | 273 +++++++++++++++++++++
windows/netuio/netuio_dev.h | 66 +++++
windows/netuio/netuio_drv.c | 131 ++++++++++
windows/netuio/netuio_drv.h | 30 +++
windows/netuio/netuio_interface.h | 88 +++++++
windows/netuio/netuio_queue.c | 334 ++++++++++++++++++++++++++
windows/netuio/netuio_queue.h | 21 ++
14 files changed, 1275 insertions(+)
create mode 100644 windows/.gitattributes
create mode 100644 windows/.gitignore
create mode 100644 windows/netuio/README.rst
create mode 100644 windows/netuio/netuio.inf
create mode 100644 windows/netuio/netuio.sln
create mode 100644 windows/netuio/netuio.vcxproj
create mode 100644 windows/netuio/netuio.vcxproj.filters
create mode 100644 windows/netuio/netuio_dev.c
create mode 100644 windows/netuio/netuio_dev.h
create mode 100644 windows/netuio/netuio_drv.c
create mode 100644 windows/netuio/netuio_drv.h
create mode 100644 windows/netuio/netuio_interface.h
create mode 100644 windows/netuio/netuio_queue.c
create mode 100644 windows/netuio/netuio_queue.h
We'll need to do a code-style cleanup at some point, but for now:
Reviewed-by: Ranjit Menon <ranjit.me...@intel.com>
Acked-by: Ranjit Menon <ranjit.me...@intel.com>
