From: Adrien Mazarguil <adrien.mazarguil@6wind.com>
To: dev@dpdk.org
Cc: Alex Rosenbaum <Alexr@mellanox.com>
Subject: [dpdk-dev] [PATCH v2 18/23] mlx4: prefetch completed TX mbufs before releasing them
Date: Tue, 30 Jun 2015 11:28:04 +0200 [thread overview]
Message-ID: <1435656489-27986-19-git-send-email-adrien.mazarguil@6wind.com> (raw)
In-Reply-To: <1435656489-27986-1-git-send-email-adrien.mazarguil@6wind.com>
From: Alex Rosenbaum <Alexr@mellanox.com>
Signed-off-by: Alex Rosenbaum <Alexr@mellanox.com>
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
drivers/net/mlx4/mlx4.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index f251eb4..52f3fbb 100644
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -1205,6 +1205,9 @@ mlx4_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
max = pkts_n;
for (i = 0; (i != max); ++i) {
struct rte_mbuf *buf = pkts[i];
+ unsigned int elts_head_next =
+ (((elts_head + 1) == elts_n) ? 0 : elts_head + 1);
+ struct txq_elt *elt_next = &(*txq->elts)[elts_head_next];
struct txq_elt *elt = &(*txq->elts)[elts_head];
unsigned int segs = NB_SEGS(buf);
#ifdef MLX4_PMD_SOFT_COUNTERS
@@ -1253,6 +1256,7 @@ mlx4_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
if (txq->priv->vf)
rte_prefetch0((volatile void *)
(uintptr_t)addr);
+ RTE_MBUF_PREFETCH_TO_FREE(elt_next->buf);
/* Put packet into send queue. */
#if MLX4_PMD_MAX_INLINE > 0
if (length <= txq->max_inline)
@@ -1283,6 +1287,7 @@ mlx4_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
&sges);
if (ret.length == (unsigned int)-1)
goto stop;
+ RTE_MBUF_PREFETCH_TO_FREE(elt_next->buf);
/* Put SG list into send queue. */
err = txq->if_qp->send_pending_sg_list
(txq->qp,
@@ -1300,8 +1305,7 @@ mlx4_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
goto stop;
#endif /* MLX4_PMD_SGE_WR_N > 1 */
}
- if (++elts_head >= elts_n)
- elts_head = 0;
+ elts_head = elts_head_next;
#ifdef MLX4_PMD_SOFT_COUNTERS
/* Increment sent bytes counter. */
txq->stats.obytes += sent_size;
--
2.1.0
next prev parent reply other threads:[~2015-06-30 9:29 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-05 23:15 [dpdk-dev] [PATCH 00/16] mlx4: MOFED 3.0 support, bugfixes and enhancements Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 01/16] mlx4: add MOFED 3.0 compatibility to interfaces names retrieval Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 02/16] mlx4: use experimental verbs for polling and completions Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 03/16] mlx4: make sure experimental device query function is implemented Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 04/16] mlx4: add L3 and L4 RX checksum offload support Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 05/16] mlx4: add L2 tunnel (VXLAN) " Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 06/16] mlx4: use faster CQ polling function Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 07/16] mlx4: update optimized steering warning message Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 08/16] mlx4: avoid looking up WR ID to improve RX performance Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 09/16] mlx4: merge RX queue setup functions Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 10/16] mlx4: allow applications to use fork() safely Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 11/16] mlx4: improve accuracy of link status information Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 12/16] mlx4: add support for upstream flow steering API Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 13/16] mlx4: fix error message for invalid number of descriptors Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 14/16] mlx4: remove provision for flow creation failure in DMFS A0 mode Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 15/16] mlx4: fix support for multiple VLAN filters Adrien Mazarguil
2015-06-05 23:15 ` [dpdk-dev] [PATCH 16/16] mlx4: query netdevice to get initial MAC address Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 00/23] mlx4: MOFED 3.0 support, bugfixes and enhancements Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 01/23] mlx4: fix possible crash on scattered mbuf allocation failure Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 02/23] mlx4: add MOFED 3.0 compatibility to interfaces names retrieval Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 03/23] mlx4: make sure experimental device query function is implemented Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 04/23] mlx4: avoid looking up WR ID to improve RX performance Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 05/23] mlx4: merge RX queue setup functions Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 06/23] mlx4: allow applications to partially use fork() Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 07/23] mlx4: improve accuracy of link status information Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 08/23] mlx4: use MOFED 3.0 extended flow steering API Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 09/23] mlx4: fix error message for invalid number of descriptors Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 10/23] mlx4: remove provision for flow creation failure in DMFS A0 mode Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 11/23] mlx4: fix support for multiple VLAN filters Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 12/23] mlx4: query netdevice to get initial MAC address Adrien Mazarguil
2015-06-30 9:27 ` [dpdk-dev] [PATCH v2 13/23] mlx4: use MOFED 3.0 fast verbs interface for RX operations Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 14/23] mlx4: improve performance by requesting TX completion events less often Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 15/23] mlx4: use MOFED 3.0 fast verbs interface for TX operations Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 16/23] mlx4: move scattered TX processing to helper function Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 17/23] mlx4: shrink TX queue elements for better performance Adrien Mazarguil
2015-06-30 9:28 ` Adrien Mazarguil [this message]
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 19/23] mlx4: add L3 and L4 checksum offload support Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 20/23] mlx4: add L2 tunnel (VXLAN) " Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 21/23] mlx4: associate resource domain with CQs and QPs to enhance performance Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 22/23] mlx4: disable multicast echo when device is not VF Adrien Mazarguil
2015-06-30 9:28 ` [dpdk-dev] [PATCH v2 23/23] doc: update mlx4 documentation following MOFED 3.0 changes Adrien Mazarguil
2015-07-01 9:33 ` [dpdk-dev] [PATCH v2 00/23] mlx4: MOFED 3.0 support, bugfixes and enhancements Thomas Monjalon
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