[dpdk-dev] [PATCH] net/null: Support bulk alloc and free.

[Mallesh Koujalagi <malleshx.koujalagi@intel.com>]

After bulk allocation and freeing of multiple mbufs increase more than ~2%
throughput on single core.

Signed-off-by: Mallesh Koujalagi <malleshx.koujalagi@intel.com>
---
 drivers/net/null/rte_eth_null.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/net/null/rte_eth_null.c b/drivers/net/null/rte_eth_null.c
index 9385ffd..247ede0 100644
--- a/drivers/net/null/rte_eth_null.c
+++ b/drivers/net/null/rte_eth_null.c
@@ -130,10 +130,11 @@ eth_null_copy_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 		return 0;
 
 	packet_size = h->internals->packet_size;
+
+	if (rte_pktmbuf_alloc_bulk(h->mb_pool, bufs, nb_bufs) != 0)
+		return 0;
+
 	for (i = 0; i < nb_bufs; i++) {
-		bufs[i] = rte_pktmbuf_alloc(h->mb_pool);
-		if (!bufs[i])
-			break;
 		rte_memcpy(rte_pktmbuf_mtod(bufs[i], void *), h->dummy_packet,
 					packet_size);
 		bufs[i]->data_len = (uint16_t)packet_size;
@@ -149,18 +150,15 @@ eth_null_copy_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 static uint16_t
 eth_null_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 {
-	int i;
 	struct null_queue *h = q;
 
 	if ((q == NULL) || (bufs == NULL))
 		return 0;
 
-	for (i = 0; i < nb_bufs; i++)
-		rte_pktmbuf_free(bufs[i]);
+	rte_mempool_put_bulk(bufs[0]->pool, (void **)bufs, nb_bufs);
+	rte_atomic64_add(&h->tx_pkts, nb_bufs);
 
-	rte_atomic64_add(&(h->tx_pkts), i);
-
-	return i;
+	return nb_bufs;
 }
 
 static uint16_t
-- 
2.7.4