Minor helper routines to mirror the mempool routines and remove the code
from applications. The ixgbe_rxtx_vec.c routine could be changed to use
the ret_pktmbuf_alloc_bulk() routine inplace of rte_mempool_get_bulk().
Signed-off-by: Keith Wiles <keith.wiles at windriver.com>
---
lib/librte_mbuf/rte_mbuf.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 77 insertions(+)
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 1c6e115..f298621 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -546,6 +546,41 @@ static inline void rte_pktmbuf_reset(struct rte_mbuf *m)
}
/**
+ * @internal Allocate a list of mbufs from mempool *mp*.
+ * The use of that function is reserved for RTE internal needs.
+ * Please use rte_pktmbuf_alloc_bulk().
+ *
+ * @param mp
+ * The mempool from which mbuf is allocated.
+ * @param m_list
+ * The array to place the allocated rte_mbufs pointers.
+ * @param cnt
+ * The number of mbufs to allocate
+ * @return
+ * - 0 if the number of mbufs allocated was ok
+ * - <0 is an ERROR.
+ */
+static inline int __rte_mbuf_raw_alloc_bulk(struct rte_mempool *mp, struct
rte_mbuf *m_list[], int cnt)
+{
+ struct rte_mbuf *m;
+ int ret;
+
+ ret = rte_mempool_get_bulk(mp, (void **)m_list, cnt);
+ if ( ret == 0 ) {
+ int i;
+ for(i = 0; i < cnt; i++) {
+ m = *m_list++;
+#ifdef RTE_MBUF_REFCNT
+ rte_mbuf_refcnt_set(m, 1);
+#endif /* RTE_MBUF_REFCNT */
+ rte_pktmbuf_reset(m);
+ }
+ ret = cnt;
+ }
+ return ret;
+}
+
+/**
* Allocate a new mbuf from a mempool.
*
* This new mbuf contains one segment, which has a length of 0. The pointer
@@ -671,6 +706,32 @@ __rte_pktmbuf_prefree_seg(struct rte_mbuf *m)
}
/**
+ * Allocate a list of mbufs from a mempool into a mbufs array.
+ *
+ * This mbuf list contains one segment per mbuf, which has a length of 0. The
pointer
+ * to data is initialized to have some bytes of headroom in the buffer
+ * (if buffer size allows).
+ *
+ * The routine is just a simple wrapper routine to reduce code in the
application and
+ * provide a cleaner API for multiple mbuf requests.
+ *
+ * @param mp
+ * The mempool from which the mbuf is allocated.
+ * @param m_list
+ * An array of mbuf pointers, cnt must be less then or equal to the size of
the list.
+ * @param cnt
+ * Number of slots in the m_list array to fill.
+ * @return
+ * - The number of valid mbufs pointers in the m_list array.
+ * - Zero if the request cnt could not be allocated.
+ */
+static inline int __attribute__((always_inline))
+rte_pktmbuf_alloc_bulk(struct rte_mempool *mp, struct rte_mbuf *m_list[],
int16_t cnt)
+{
+ return __rte_mbuf_raw_alloc_bulk(mp, m_list, cnt);
+}
+
+/**
* Free a segment of a packet mbuf into its original mempool.
*
* Free an mbuf, without parsing other segments in case of chained
@@ -708,6 +769,22 @@ static inline void rte_pktmbuf_free(struct rte_mbuf *m)
}
}
+/**
+ * Free a list of packet mbufs back into its original mempool.
+ *
+ * Free a list of mbufs by calling rte_pktmbuf_free() in a loop as a wrapper
function.
+ *
+ * @param m_list
+ * An array of rte_mbuf pointers to be freed.
+ * @param npkts
+ * Number of packets to free in list.
+ */
+static inline void rte_pktmbuf_free_bulk(struct rte_mbuf *m_list[], int16_t
npkts)
+{
+ while(npkts--)
+ rte_pktmbuf_free(*m_list++);
+}
+
#ifdef RTE_MBUF_REFCNT
/**
--
2.1.0
