From 3832125624b75b54567be906e9aa67e1343be569 Mon Sep 17 00:00:00 2001 From: Matan Barak Date: Tue, 4 Apr 2017 13:31:42 +0300 Subject: IB/core: Add support for idr types The new ioctl infrastructure supports driver specific objects. Each such object type has a hot unplug function, allocation size and an order of destruction. When a ucontext is created, a new list is created in this ib_ucontext. This list contains all objects created under this ib_ucontext. When a ib_ucontext is destroyed, we traverse this list several time destroying the various objects by the order mentioned in the object type description. If few object types have the same destruction order, they are destroyed in an order opposite to their creation. Adding an object is done in two parts. First, an object is allocated and added to idr tree. Then, the command's handlers (in downstream patches) could work on this object and fill in its required details. After a successful command, the commit part is called and the user objects become ucontext visible. If the handler failed, alloc_abort should be called. Removing an uboject is done by calling lookup_get with the write flag and finalizing it with destroy_commit. A major change from the previous code is that we actually destroy the kernel object itself in destroy_commit (rather than just the uobject). We should make sure idr (per-uverbs-file) and list (per-ucontext) could be accessed concurrently without corrupting them. Signed-off-by: Matan Barak Reviewed-by: Yishai Hadas Signed-off-by: Doug Ledford --- drivers/infiniband/core/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/infiniband/core/Makefile') diff --git a/drivers/infiniband/core/Makefile b/drivers/infiniband/core/Makefile index e426ac877d19..d29f910d98c9 100644 --- a/drivers/infiniband/core/Makefile +++ b/drivers/infiniband/core/Makefile @@ -29,4 +29,5 @@ ib_umad-y := user_mad.o ib_ucm-y := ucm.o -ib_uverbs-y := uverbs_main.o uverbs_cmd.o uverbs_marshall.o +ib_uverbs-y := uverbs_main.o uverbs_cmd.o uverbs_marshall.o \ + rdma_core.o -- cgit v1.2.3-59-g8ed1b