[dpdk-dev] [PATCH v2 2/8] mbuf: make raw free function public

[Olivier Matz]

Rename __rte_mbuf_raw_free() as rte_mbuf_raw_free() and make
it public. The old function is kept for compat but is marked as
deprecated.

The next commit changes the behavior of rte_mbuf_raw_free() to
make it more consistent with rte_mbuf_raw_alloc().

Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
---
 drivers/net/ena/ena_ethdev.c |  2 +-
 drivers/net/mlx5/mlx5_rxtx.c |  6 +++---
 lib/librte_mbuf/rte_mbuf.h   | 22 ++++++++++++++++------
 3 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index b5e6db624..5dd44d778 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -680,7 +680,7 @@ static void ena_rx_queue_release_bufs(struct ena_ring *ring)
 			ring->rx_buffer_info[ring->next_to_clean & ring_mask];
 
 		if (m)
-			__rte_mbuf_raw_free(m);
+			rte_mbuf_raw_free(m);
 
 		ring->next_to_clean++;
 	}
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index b8d2bf628..0cbf98ffd 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1475,7 +1475,7 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 				assert(pkt != (*rxq->elts)[idx]);
 				rep = NEXT(pkt);
 				rte_mbuf_refcnt_set(pkt, 0);
-				__rte_mbuf_raw_free(pkt);
+				rte_mbuf_raw_free(pkt);
 				pkt = rep;
 			}
 			break;
@@ -1486,13 +1486,13 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 					       &rss_hash_res);
 			if (!len) {
 				rte_mbuf_refcnt_set(rep, 0);
-				__rte_mbuf_raw_free(rep);
+				rte_mbuf_raw_free(rep);
 				break;
 			}
 			if (unlikely(len == -1)) {
 				/* RX error, packet is likely too large. */
 				rte_mbuf_refcnt_set(rep, 0);
-				__rte_mbuf_raw_free(rep);
+				rte_mbuf_raw_free(rep);
 				++rxq->stats.idropped;
 				goto skip;
 			}
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index e15378567..2dc4d8b98 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -797,20 +797,30 @@ static inline struct rte_mbuf *rte_mbuf_raw_alloc(struct rte_mempool *mp)
 }
 
 /**
- * @internal Put mbuf back into its original mempool.
- * The use of that function is reserved for RTE internal needs.
- * Please use rte_pktmbuf_free().
+ * Put mbuf back into its original mempool.
+ *
+ * The caller must ensure that the mbuf is direct and that the
+ * reference counter is 0.
  *
  * @param m
  *   The mbuf to be freed.
  */
 static inline void __attribute__((always_inline))
-__rte_mbuf_raw_free(struct rte_mbuf *m)
+rte_mbuf_raw_free(struct rte_mbuf *m)
 {
+	RTE_ASSERT(RTE_MBUF_DIRECT(m));
 	RTE_ASSERT(rte_mbuf_refcnt_read(m) == 0);
 	rte_mempool_put(m->pool, m);
 }
 
+/* compat with older versions */
+__rte_deprecated
+static inline void __attribute__((always_inline))
+__rte_mbuf_raw_free(struct rte_mbuf *m)
+{
+	rte_mbuf_raw_free(m);
+}
+
 /* Operations on ctrl mbuf */
 
 /**
@@ -1217,7 +1227,7 @@ static inline void rte_pktmbuf_detach(struct rte_mbuf *m)
 	m->ol_flags = 0;
 
 	if (rte_mbuf_refcnt_update(md, -1) == 0)
-		__rte_mbuf_raw_free(md);
+		rte_mbuf_raw_free(md);
 }
 
 /**
@@ -1272,7 +1282,7 @@ rte_pktmbuf_free_seg(struct rte_mbuf *m)
 	m = rte_pktmbuf_prefree_seg(m);
 	if (likely(m != NULL)) {
 		m->next = NULL;
-		__rte_mbuf_raw_free(m);
+		rte_mbuf_raw_free(m);
 	}
 }
 
-- 
2.11.0