RDMA/uverbs: Export XRC domains to user space

Allow user space to create XRC domains.  Because XRCDs are expected to
be shared among multiple processes, we use inodes to identify an XRCD.

Based on patches by Jack Morgenstein <jackm@dev.mellanox.co.il>

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index ac46dcf0435..dfd9b87b7ff 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -851,6 +851,7 @@ struct ib_ucontext {
 	struct list_head	qp_list;
 	struct list_head	srq_list;
 	struct list_head	ah_list;
+	struct list_head	xrcd_list;
 	int			closing;
 };
 
@@ -881,6 +882,7 @@ struct ib_pd {
 struct ib_xrcd {
 	struct ib_device       *device;
 	atomic_t		usecnt; /* count all exposed resources */
+	struct inode	       *inode;
 
 	struct mutex		tgt_qp_mutex;
 	struct list_head	tgt_qp_list;