Although C compilation works with the struct rte_mbuf_sched
declared inside the struct rte_mbuf namespace, C++ fails to
compile. This fix moves the rte_mbuf_sched struct up to the
global namespace, instead of declaring it inside the struct
mbuf namespace.

The struct rte_mbuf_sched is being used on the stack in
rte_mbuf_sched_get() and as a cast in _set(). For this
reason, it must be exposed as an available type.

Fixes: 5d3f72100904 ("mbuf: implement generic format for sched field")

Signed-off-by: Harry van Haaren <harry.van.haa...@intel.com>

---

v3:
 - Update comment in mbuf to state size of struct sched (Crisitian)

v2:
 - Different solution, not applicable, v3 based on v1 (ML discussion)

Cc: reshma.pat...@intel.com
Cc: cristian.dumitre...@intel.com
Cc: olivier.m...@6wind.com
Cc: tho...@monjalon.net
Cc: step...@networkplumber.org
Cc: gavin...@arm.com
Cc: honnappa.nagaraha...@arm.com
---
 lib/librte_mbuf/rte_mbuf.h | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index bc562dc8a..d53b68253 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -468,6 +468,17 @@ __extension__
 typedef uint64_t MARKER64[0]; /**< marker that allows us to overwrite 8 bytes
                                * with a single assignment */
 
+struct rte_mbuf_sched {
+       uint32_t queue_id;   /**< Queue ID. */
+       uint8_t traffic_class;
+       /**< Traffic class ID. Traffic class 0
+        * is the highest priority traffic class.
+        */
+       uint8_t color;
+       /**< Color. @see enum rte_color.*/
+       uint16_t reserved;   /**< Reserved. */
+}; /**< Hierarchical scheduler */
+
 /**
  * The generic rte_mbuf, containing a packet mbuf.
  */
@@ -574,16 +585,8 @@ struct rte_mbuf {
                                 * on PKT_RX_FDIR_* flag in ol_flags.
                                 */
                        } fdir; /**< Filter identifier if FDIR enabled */
-                       struct rte_mbuf_sched {
-                               uint32_t queue_id;   /**< Queue ID. */
-                               uint8_t traffic_class;
-                               /**< Traffic class ID. Traffic class 0
-                                * is the highest priority traffic class.
-                                */
-                               uint8_t color;
-                               /**< Color. @see enum rte_color.*/
-                               uint16_t reserved;   /**< Reserved. */
-                       } sched; /**< Hierarchical scheduler */
+                       struct rte_mbuf_sched sched;
+                       /**< Hierarchical scheduler : 8 bytes */
                        struct {
                                uint32_t reserved1;
                                uint16_t reserved2;
-- 
2.17.1

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