On Fri, Oct 02, 2020 at 11:21:54AM -0700, Ranjit Menon wrote: > > 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> > >--- > > > > We'll need to do a code-style cleanup at some point, but for now: >
Yes, agreed. I'll send a patch for style cleanup after merging this one. Thanks, Ranjit. > Reviewed-by: Ranjit Menon <ranjit.me...@intel.com> > > Acked-by: Ranjit Menon <ranjit.me...@intel.com>
