[openib-general] Register virtual for kernel API?

[Roland Dreier]

    Sean> My initial thought is to agree.  Doesn't iwarp only support
    Sean> physical registration?  (Meaning, if so, then the iwarp
    Sean> designers didn't find it necessary either.)

OK, here's a patch removing ib_reg_mr, ib_rereg_mr and ib_reg_smr (I
don't think shared memory makes sense in the kernel).  I also changed
ib_rereg_phys_mr to return an int, since I assume it will update the
struct ib_mr * passed to it without allocating a new one.

 - R.

Index: ib_verbs.h
===================================================================
--- ib_verbs.h	(revision 539)
+++ ib_verbs.h	(working copy)
@@ -616,13 +616,6 @@
 
 int ib_destroy_cq(struct ib_cq *cq);
 
-struct ib_mr *ib_reg_mr(struct ib_pd *pd,
-			void *addr,
-			u64 size,
-			int mr_access_flags,
-			u32 *lkey,
-			u32 *rkey);
-
 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
 			     struct ib_phys_buf *phys_buf_array,
 			     int num_phys_buf,
@@ -636,32 +629,16 @@
 
 int ib_dereg_mr(struct ib_mr *mr);
 
-struct ib_mr *ib_rereg_mr(struct ib_mr *mr,
-			  int mr_rereg_mask,
-			  struct ib_pd *pd,
-                          void *addr,
-                          u64 size,
-                          int mr_access_flags,
-			  u32 *lkey,
-			  u32 *rkey);
+int ib_rereg_phys_mr(struct ib_mr *mr,
+		     int mr_rereg_mask,
+		     struct ib_pd *pd,
+		     struct ib_phys_buf *phys_buf_array,
+		     int num_phys_buf,
+		     int mr_access_flags,
+		     u64 *iova_start,
+		     u32 *lkey,
+		     u32 *rkey);
 
-struct ib_mr *ib_rereg_phys_mr(struct ib_mr *mr,
-			       int mr_rereg_mask,
-			       struct ib_pd *pd,
-			       struct ib_phys_buf *phys_buf_array,
-			       int num_phys_buf,
-			       int mr_access_flags,
-			       u64 *iova_start,
-			       u32 *lkey,
-			       u32 *rkey);
-
-struct ib_mr *ib_reg_smr(struct ib_mr *mr,
-			 struct ib_pd *pd,
-			 int mr_access_flags,
-			 u64 *iova_start,
-			 u32 *lkey,
-			 u32 *rkey);
-
 struct ib_mw *ib_alloc_mw(struct ib_pd *pd,
 			  u32 *rkey);