[PATCH 4/7] net/ice/base: add some help macros

[Qi Zhang <qi.z.zhang@intel.com>]

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
---
 drivers/net/ice/base/ice_common.h | 10 ++++++++++
 drivers/net/ice/base/ice_osdep.h  |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/net/ice/base/ice_common.h b/drivers/net/ice/base/ice_common.h
index 45d93eb64..67539ccb7 100644
--- a/drivers/net/ice/base/ice_common.h
+++ b/drivers/net/ice/base/ice_common.h
@@ -51,6 +51,16 @@ void ice_clear_pxe_mode(struct ice_hw *hw);
 
 enum ice_status ice_get_caps(struct ice_hw *hw);
 
+/* Define a macro that will align a pointer to point to the next memory address
+ * that falls on the given power of 2 (i.e., 2, 4, 8, 16, 32, 64...). For
+ * example, given the variable pointer = 0x1006, then after the following call:
+ *
+ *      pointer = ICE_ALIGN(pointer, 4)
+ *
+ * ... the value of pointer would equal 0x1008, since 0x1008 is the next
+ * address after 0x1006 which is divisible by 4.
+ */
+#define ICE_ALIGN(ptr, align)   (((ptr) + ((align) - 1)) & ~((align) - 1))
 
 
 enum ice_status
diff --git a/drivers/net/ice/base/ice_osdep.h b/drivers/net/ice/base/ice_osdep.h
index a3351c034..252c8f4e7 100644
--- a/drivers/net/ice/base/ice_osdep.h
+++ b/drivers/net/ice/base/ice_osdep.h
@@ -457,6 +457,8 @@ LIST_HEAD(ice_list_head, ice_list_entry);
 
 /*Note parameters are swapped*/
 #define LIST_FIRST_ENTRY(head, type, field) (type *)((head)->lh_first)
+#define LIST_NEXT_ENTRY(entry, type, field) \
+	((type *)(entry)->field.next.le_next)
 #define LIST_ADD(entry, list_head)    LIST_INSERT_HEAD(list_head, entry, next)
 #define LIST_ADD_AFTER(entry, list_entry) \
 	LIST_INSERT_AFTER(list_entry, entry, next)
-- 
2.13.6