[dpdk-dev] [PATCH 1/9] mempool/dpaa2: add functions exposed to DPDK applications

[Nipun Gupta <nipun.gupta@nxp.com>]

There are two API's which are required by NXP specific Command Interface
Application (AIOP CMDIF). This patch exposes these two API's.

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
---
 doc/api/doxy-api-index.md                          |  1 +
 doc/api/doxy-api.conf                              |  1 +
 drivers/mempool/dpaa2/Makefile                     |  2 +
 drivers/mempool/dpaa2/dpaa2_hw_mempool.c           | 30 ++++++++++++
 drivers/mempool/dpaa2/rte_dpaa2_mempool.h          | 53 ++++++++++++++++++++++
 .../mempool/dpaa2/rte_mempool_dpaa2_version.map    |  8 ++++
 6 files changed, 95 insertions(+)
 create mode 100644 drivers/mempool/dpaa2/rte_dpaa2_mempool.h

diff --git a/doc/api/doxy-api-index.md b/doc/api/doxy-api-index.md
index d77f205..49fcec4 100644
--- a/doc/api/doxy-api-index.md
+++ b/doc/api/doxy-api-index.md
@@ -63,6 +63,7 @@ The public API headers are grouped by topics:
   [i40e]               (@ref rte_pmd_i40e.h),
   [bnxt]               (@ref rte_pmd_bnxt.h),
   [dpaa]               (@ref rte_pmd_dpaa.h),
+  [dpaa2]              (@ref rte_dpaa2_mempool.h),
   [crypto_scheduler]   (@ref rte_cryptodev_scheduler.h)
 
 - **memory**:
diff --git a/doc/api/doxy-api.conf b/doc/api/doxy-api.conf
index cda52fd..59cb580 100644
--- a/doc/api/doxy-api.conf
+++ b/doc/api/doxy-api.conf
@@ -31,6 +31,7 @@
 PROJECT_NAME            = DPDK
 INPUT                   = doc/api/doxy-api-index.md \
                           drivers/crypto/scheduler \
+                          drivers/mempool/dpaa2 \
                           drivers/net/bnxt \
                           drivers/net/bonding \
                           drivers/net/dpaa \
diff --git a/drivers/mempool/dpaa2/Makefile b/drivers/mempool/dpaa2/Makefile
index efaac96..c9c2511 100644
--- a/drivers/mempool/dpaa2/Makefile
+++ b/drivers/mempool/dpaa2/Makefile
@@ -34,4 +34,6 @@ SRCS-$(CONFIG_RTE_LIBRTE_DPAA2_MEMPOOL) += dpaa2_hw_mempool.c
 LDLIBS += -lrte_bus_fslmc
 LDLIBS += -lrte_eal -lrte_mempool -lrte_ring
 
+SYMLINK-$(CONFIG_RTE_LIBRTE_DPAA2_MEMPOOL)-include := rte_dpaa2_mempool.h
+
 include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/mempool/dpaa2/dpaa2_hw_mempool.c b/drivers/mempool/dpaa2/dpaa2_hw_mempool.c
index 2bd62e8..7d35530 100644
--- a/drivers/mempool/dpaa2/dpaa2_hw_mempool.c
+++ b/drivers/mempool/dpaa2/dpaa2_hw_mempool.c
@@ -21,6 +21,7 @@
 #include <rte_cycles.h>
 #include <rte_kvargs.h>
 #include <rte_dev.h>
+#include "rte_dpaa2_mempool.h"
 
 #include <fslmc_logs.h>
 #include <mc/fsl_dpbp.h>
@@ -233,6 +234,35 @@
 	}
 }
 
+uint16_t
+rte_dpaa2_mbuf_pool_bpid(struct rte_mempool *mp)
+{
+	struct dpaa2_bp_info *bp_info;
+
+	bp_info = mempool_to_bpinfo(mp);
+	if (!(bp_info->bp_list)) {
+		RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
+		return -ENOMEM;
+	}
+
+	return bp_info->bpid;
+}
+
+struct rte_mbuf *
+rte_dpaa2_mbuf_from_buf_addr(struct rte_mempool *mp, void *buf_addr)
+{
+	struct dpaa2_bp_info *bp_info;
+
+	bp_info = mempool_to_bpinfo(mp);
+	if (!(bp_info->bp_list)) {
+		RTE_LOG(ERR, PMD, "DPAA2 buffer pool not configured\n");
+		return NULL;
+	}
+
+	return (struct rte_mbuf *)((uint8_t *)buf_addr -
+			bp_info->meta_data_size);
+}
+
 int
 rte_dpaa2_mbuf_alloc_bulk(struct rte_mempool *pool,
 			  void **obj_table, unsigned int count)
diff --git a/drivers/mempool/dpaa2/rte_dpaa2_mempool.h b/drivers/mempool/dpaa2/rte_dpaa2_mempool.h
new file mode 100644
index 0000000..4a22b7c
--- /dev/null
+++ b/drivers/mempool/dpaa2/rte_dpaa2_mempool.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2018 NXP
+ */
+
+#ifndef __RTE_DPAA2_MEMPOOL_H__
+#define __RTE_DPAA2_MEMPOOL_H__
+
+/**
+ * @file
+ *
+ * NXP specific mempool related functions.
+ *
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <rte_mempool.h>
+
+/**
+ * Get BPID corresponding to the packet pool
+ *
+ * @param mp
+ *   memory pool
+ *
+ * @return
+ *   BPID of the buffer pool
+ */
+uint16_t
+rte_dpaa2_mbuf_pool_bpid(struct rte_mempool *mp);
+
+/**
+ * Get MBUF from the corresponding 'buf_addr'
+ *
+ * @param mp
+ *   memory pool
+ * @param buf_addr
+ *   The 'buf_addr' of the mbuf. This is the start buffer address
+ *   of the packet buffer (mbuf).
+ *
+ * @return
+ *   - MBUF pointer for success
+ *   - NULL in case of error
+ */
+struct rte_mbuf *
+rte_dpaa2_mbuf_from_buf_addr(struct rte_mempool *mp, void *buf_addr);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __RTE_DPAA2_MEMPOOL_H__ */
diff --git a/drivers/mempool/dpaa2/rte_mempool_dpaa2_version.map b/drivers/mempool/dpaa2/rte_mempool_dpaa2_version.map
index a8aa685..b45e7a9 100644
--- a/drivers/mempool/dpaa2/rte_mempool_dpaa2_version.map
+++ b/drivers/mempool/dpaa2/rte_mempool_dpaa2_version.map
@@ -6,3 +6,11 @@ DPDK_17.05 {
 
 	local: *;
 };
+
+DPDK_18.05 {
+	global:
+
+	rte_dpaa2_mbuf_from_buf_addr;
+	rte_dpaa2_mbuf_pool_bpid;
+
+} DPDK_17.05;
-- 
1.9.1