RDMA: Add NLDEV_GET_CHARDEV to allow char dev discovery and autoload

Browse source

Allow userspace to issue a netlink query against the ib_device for
something like "uverbs" and get back the char dev name, inode major/minor,
and interface ABI information for "uverbs0".

Since we are now in netlink this can also trigger a module autoload to
make the uverbs device come into existence.

Largely this will let us replace searching and reading inside sysfs to
setup devices, and provides an alternative (using driver_id) to device
name based provider binding for things like rxe.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

...

This commit is contained in:

Jason Gunthorpe 2019-06-13 21:38:18 -03:00 • committed by Doug Ledford

parent 5d60c11154

commit 0e2d00eb6f

6 changed files with 221 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

9

drivers/infiniband/core/core_priv.h

View file

98

drivers/infiniband/core/device.c

View file

94

drivers/infiniband/core/nldev.c

View file

4

include/rdma/ib_verbs.h

View file

2

include/rdma/rdma_netlink.h

View file

14

include/uapi/rdma/rdma_netlink.h

View file