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From: Balazs Nemeth <bnemeth@redhat.com>
To: bnemeth@redhat.com, dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2 3/4] vhost: allocate and free packets in bulk
Date: Wed,  7 Apr 2021 12:17:20 +0200
Message-ID: <87be741c28c8d93a4cf93dc1af556cd4ead687ed.1617790501.git.bnemeth@redhat.com> (raw)
In-Reply-To: <f7b08832f86d2fb9a8834b2a19b13f26d3c6857b.1617723339.git.bnemeth@redhat.com>

Now that all allocation and freeing has been moved together, use the
faster bulk versions instead of handling packets one by one.

Signed-off-by: Balazs Nemeth <bnemeth@redhat.com>
---
 lib/librte_vhost/virtio_net.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 496f750e3..2f0c97b91 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -2469,10 +2469,10 @@ virtio_dev_tx_packed(struct virtio_net *dev,
 {
 	uint32_t pkt_idx = 0;
 	uint32_t remained = count;
-	uint16_t i;
 
-	for (i = 0; i < count; ++i)
-		pkts[i] = rte_pktmbuf_alloc(mbuf_pool);
+	if (rte_pktmbuf_alloc_bulk(mbuf_pool, pkts, count)) {
+		return 0;
+	}
 
 	do {
 		rte_prefetch0(&vq->desc_packed[vq->last_avail_idx]);
@@ -2497,8 +2497,9 @@ virtio_dev_tx_packed(struct virtio_net *dev,
 
 	} while (remained);
 
-	for (i = pkt_idx; i < count; ++i)
-		rte_pktmbuf_free(pkts[i]);
+	if (pkt_idx != count) {
+		rte_pktmbuf_free_bulk(&pkts[pkt_idx], count - pkt_idx);
+	}
 
 	if (vq->shadow_used_idx) {
 		do_data_copy_dequeue(vq);
-- 
2.30.2


  parent reply	other threads:[~2021-04-07 10:19 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-06 15:44 [dpdk-dev] [PATCH 0/4] Use bulk alloc/free in virtio packed Balazs Nemeth
2021-04-06 15:44 ` [dpdk-dev] [PATCH 1/4] vhost: move allocation of mbuf outside of packet enqueue Balazs Nemeth
2021-04-07 10:17   ` [dpdk-dev] [PATCH v2 " Balazs Nemeth
2021-04-15 12:37     ` Maxime Coquelin
2021-04-16  8:18     ` [dpdk-dev] [PATCH v3] vhost: allocate and free packets in bulk Balazs Nemeth
2021-04-16  8:36       ` Maxime Coquelin
2021-04-16  9:05       ` David Marchand
2021-04-16  9:12         ` Balazs Nemeth
2021-04-16  9:41           ` Maxime Coquelin
2021-04-16  9:43           ` David Marchand
2021-04-16  9:48       ` [dpdk-dev] [PATCH v4] " Balazs Nemeth
2021-04-16 10:25         ` [dpdk-dev] [PATCH v5] vhost: allocate and free packets in bulk in Tx packed Balazs Nemeth
2021-04-16 11:14           ` David Marchand
2021-04-21  7:48           ` Maxime Coquelin
2021-04-28  3:16             ` Xia, Chenbo
2021-04-07 10:17   ` [dpdk-dev] [PATCH v2 2/4] vhost: perform all mbuf allocations in one loop Balazs Nemeth
2021-04-15 15:30     ` Maxime Coquelin
2021-04-07 10:17   ` Balazs Nemeth [this message]
2021-04-15 15:32     ` [dpdk-dev] [PATCH v2 3/4] vhost: allocate and free packets in bulk Maxime Coquelin
2021-04-15 15:45       ` David Marchand
2021-04-15 15:50         ` Maxime Coquelin
2021-04-15 15:58           ` Maxime Coquelin
2021-04-07 10:17   ` [dpdk-dev] [PATCH v2 4/4] vhost: remove unnecessary level of indirection Balazs Nemeth
2021-04-15 15:38     ` Maxime Coquelin
2021-04-06 15:44 ` [dpdk-dev] [PATCH 2/4] vhost: perform all mbuf allocations in one loop Balazs Nemeth
2021-04-06 15:44 ` [dpdk-dev] [PATCH 3/4] vhost: allocate and free packets in bulk Balazs Nemeth
2021-04-06 15:44 ` [dpdk-dev] [PATCH 4/4] vhost: remove unnecessary level of indirection Balazs Nemeth

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