IB: Enable FMR pool user to set page size

This patch allows the consumer to set the page size of "pages" mapped
by the pool FMRs, which is a feature already existing in the base
verbs API.  On the cosmetic side it changes ib_fmr_attr.page_size field
to be named page_shift.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

2 files changed, 3 insertions, 1 deletions

diff --git a/include/rdma/ib_fmr_pool.h b/include/rdma/ib_fmr_pool.h
index 86b7e93f198b..4ace54cd0cce 100644
--- a/include/rdma/ib_fmr_pool.h
+++ b/include/rdma/ib_fmr_pool.h
@@ -43,6 +43,7 @@ struct ib_fmr_pool;
 /**
  * struct ib_fmr_pool_param - Parameters for creating FMR pool
  * @max_pages_per_fmr:Maximum number of pages per map request.
+ * @page_shift: Log2 of sizeof "pages" mapped by this fmr
  * @access:Access flags for FMRs in pool.
  * @pool_size:Number of FMRs to allocate for pool.
  * @dirty_watermark:Flush is triggered when @dirty_watermark dirty
@@ -55,6 +56,7 @@ struct ib_fmr_pool;
  */
 struct ib_fmr_pool_param {
         int                     max_pages_per_fmr;
+        int                     page_shift;
         enum ib_access_flags    access;
         int                     pool_size;
         int                     dirty_watermark;
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 1d31c8cd5ce0..61a4390ae9d8 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -651,7 +651,7 @@ struct ib_mw_bind {
 struct ib_fmr_attr {
         int     max_pages;
         int     max_maps;
-        u8      page_size;
+        u8      page_shift;
 };
 
 struct ib_ucontext {