IB/core: Reserve bits in enum ib_qp_create_flags for low-level driver use

Reserve bits 26-31 for internal use by low-level drivers. Two such
bits are used in the mlx4_b driver SR-IOV implementation.

These enum additions guarantee that the core layer will never use
these bits, so that low level drivers may safely make use of them.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 07996af..46bc045 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -614,6 +614,9 @@ enum ib_qp_type {
 enum ib_qp_create_flags {
        IB_QP_CREATE_IPOIB_UD_LSO               = 1 << 0,
        IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK   = 1 << 1,
+       /* reserve bits 26-31 for low level drivers' internal use */
+       IB_QP_CREATE_RESERVED_START             = 1 << 26,
+       IB_QP_CREATE_RESERVED_END               = 1 << 31,
 };
 
 struct ib_qp_init_attr {