summaryrefslogtreecommitdiff
path: root/include/rdma/ib_verbs.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/rdma/ib_verbs.h')
-rw-r--r--include/rdma/ib_verbs.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 9423e70a881c..34971c7b988f 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2468,6 +2468,14 @@ struct ib_device_ops {
enum ib_uverbs_advise_mr_advice advice, u32 flags,
struct ib_sge *sg_list, u32 num_sge,
struct uverbs_attr_bundle *attrs);
+
+ /*
+ * Kernel users should universally support relaxed ordering (RO), as
+ * they are designed to read data only after observing the CQE and use
+ * the DMA API correctly.
+ *
+ * Some drivers implicitly enable RO if platform supports it.
+ */
int (*map_mr_sg)(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
unsigned int *sg_offset);
int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,