search for: ib_device

...t; devices. Classes like netdev and rdma are correct since they have a clear > set of semantics their own. But grouping network and scsi into a single > class looks wrong, that's the work of a virtual bus. rdma also has about 20 different types of things it supports on top of the generic ib_device. The central point in RDMA is the 'struct ib_device' which is a device class. You can discover all RDMA devices by looking in /sys/class/infiniband/ It has an internal bus like thing (which probably should have been an actual bus, but this was done 15 years ago) which allows other subsyst...

...ong with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __VIRTIO_RDMA__ +#define __VIRTIO_RDMA__ + +#include <linux/virtio.h> +#include <rdma/ib_verbs.h> + +struct virtio_rdma_info { + struct ib_device ib_dev; + struct virtio_device *vdev; + struct virtqueue *ctrl_vq; + wait_queue_head_t acked; /* arm on send to host, release on recv */ + struct net_device *netdev; +}; + +static inline struct virtio_rdma_info *to_vdev(struct ib_device *ibdev) +{ + return container_of(ibdev, struct virtio_rdma_inf...

...re > + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA > + */ > + > +#ifndef __VIRTIO_RDMA__ > +#define __VIRTIO_RDMA__ > + > +#include <linux/virtio.h> > +#include <rdma/ib_verbs.h> > + > +struct virtio_rdma_info { > + struct ib_device ib_dev; > + struct virtio_device *vdev; > + struct virtqueue *ctrl_vq; > + wait_queue_head_t acked; /* arm on send to host, release on recv */ > + struct net_device *netdev; > +}; > + > +static inline struct virtio_rdma_info *to_vdev(struct ib_device *ibdev) > +{ > + retu...

On Thu, Feb 13, 2020 at 10:56:00AM -0500, Michael S. Tsirkin wrote: > On Thu, Feb 13, 2020 at 11:51:54AM -0400, Jason Gunthorpe wrote: > > > That bus is exactly what Greg KH proposed. There are other ways > > > to solve this I guess but this bikeshedding is getting tiring. > > > > This discussion was for a different goal, IMHO. > > Hmm couldn't find it

On Thu, Feb 13, 2020 at 10:56:00AM -0500, Michael S. Tsirkin wrote: > On Thu, Feb 13, 2020 at 11:51:54AM -0400, Jason Gunthorpe wrote: > > > That bus is exactly what Greg KH proposed. There are other ways > > > to solve this I guess but this bikeshedding is getting tiring. > > > > This discussion was for a different goal, IMHO. > > Hmm couldn't find it

Data center backends use more and more RDMA or RoCE devices and more and more software runs in virtualized environment. There is a need for a standard to enable RDMA/RoCE on Virtual Machines. Virtio is the optimal solution since is the de-facto para-virtualizaton technology and also because the Virtio specification allows Hardware Vendors to support Virtio protocol natively in order to achieve

Data center backends use more and more RDMA or RoCE devices and more and more software runs in virtualized environment. There is a need for a standard to enable RDMA/RoCE on Virtual Machines. Virtio is the optimal solution since is the de-facto para-virtualizaton technology and also because the Virtio specification allows Hardware Vendors to support Virtio protocol natively in order to achieve

...mp;& PCI && INET > + ---help--- > + This driver provides low-level support for VirtIO Paravirtual > + RDMA adapter. Does this driver really depend on Ethernet, or does it also work with Ethernet support disabled? > +static inline struct virtio_rdma_info *to_vdev(struct ib_device *ibdev) > +{ > + return container_of(ibdev, struct virtio_rdma_info, ib_dev); > +} Is it really worth to introduce this function? Have you considered to use container_of(ibdev, struct virtio_rdma_info, ib_dev) directly instead of to_vdev()? > +static void rdma_ctrl_ack(struct virtqueu...

Hi, This is third approach (complete this time) for replacing struct dma_attrs with unsigned long. The main patch (2/45) doing the change is split into many subpatches for easier review (3-43). They should be squashed together when applying. *Important:* Patchset is *only* build tested on allyesconfigs: ARM, ARM64, i386, x86_64 and powerpc. Please provide reviewes and tests for other

From: John Hubbard <jhubbard at nvidia.com> Hi, This is mostly Jerome's work, converting the block/bio and related areas to call put_user_page*() instead of put_page(). Because I've changed Jerome's patches, in some cases significantly, I'd like to get his feedback before we actually leave him listed as the author (he might want to disown some or all of these). I added a

From: John Hubbard <jhubbard at nvidia.com> Hi, This is mostly Jerome's work, converting the block/bio and related areas to call put_user_page*() instead of put_page(). Because I've changed Jerome's patches, in some cases significantly, I'd like to get his feedback before we actually leave him listed as the author (he might want to disown some or all of these). I added a

From: Jason Gunthorpe <jgg at mellanox.com> 8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1, scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where they only use invalidate_range_start/end and immediately check the invalidating range against some driver data structure to tell if the driver is interested. Half of them use an interval_tree, the others

From: Leon Romanovsky <leonro at nvidia.com> Changelog: v1: * Renamed _mlx5_rescan_driver to be mlx5_rescan_driver_locked like in other parts of the mlx5 driver. * Renamed MLX5_INTERFACE_PROTOCOL_VDPA to tbe MLX5_INTERFACE_PROTOCOL_VNET as a preparation to coming series from Eli C. * Some small naming renames in mlx5_vdpa. * Refactored adev index code to make Parav's SF series

From: Jason Gunthorpe <jgg at mellanox.com> 8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1, scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where they only use invalidate_range_start/end and immediately check the invalidating range against some driver data structure to tell if the driver is interested. Half of them use an interval_tree, the others