From: Zhe Tao <zhe.tao@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH 6/8 v2] change the postion of data prefetch for splitter packets
Date: Fri, 30 Oct 2015 18:52:14 +0800 [thread overview]
Message-ID: <1446202336-8723-7-git-send-email-zhe.tao@intel.com> (raw)
In-Reply-To: <1446202336-8723-1-git-send-email-zhe.tao@intel.com>
according to ixgbe vector implementation, change the data prefetch position
Signed-off-by: Zhe Tao <zhe.tao@intel.com>
---
drivers/net/i40e/i40e_rxtx_vec.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/net/i40e/i40e_rxtx_vec.c b/drivers/net/i40e/i40e_rxtx_vec.c
index 6f89002..f5b2db6 100644
--- a/drivers/net/i40e/i40e_rxtx_vec.c
+++ b/drivers/net/i40e/i40e_rxtx_vec.c
@@ -314,13 +314,6 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
__m128i zero, staterr, sterr_tmp1, sterr_tmp2;
__m128i mbp1, mbp2; /* two mbuf pointer in one XMM reg. */
- if (split_packet) {
- rte_prefetch0(&rx_pkts[pos]->cacheline1);
- rte_prefetch0(&rx_pkts[pos + 1]->cacheline1);
- rte_prefetch0(&rx_pkts[pos + 2]->cacheline1);
- rte_prefetch0(&rx_pkts[pos + 3]->cacheline1);
- }
-
/* B.1 load 1 mbuf point */
mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
/* Read desc statuses backwards to avoid race condition */
@@ -341,6 +334,13 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
/* B.2 copy 2 mbuf point into rx_pkts */
_mm_storeu_si128((__m128i *)&rx_pkts[pos+2], mbp2);
+ if (split_packet) {
+ rte_prefetch0(&rx_pkts[pos]->cacheline1);
+ rte_prefetch0(&rx_pkts[pos + 1]->cacheline1);
+ rte_prefetch0(&rx_pkts[pos + 2]->cacheline1);
+ rte_prefetch0(&rx_pkts[pos + 3]->cacheline1);
+ }
+
/*shift the pktlen field*/
desc_pktlen_align(descs);
--
1.9.3
next prev parent reply other threads:[~2015-10-30 10:52 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-27 17:05 [dpdk-dev] [PATCH 0/4] i40e: add vector PMD support for FVL Zhe Tao
2015-09-27 17:05 ` [dpdk-dev] [PATCH 1/4] add vector PMD RX " Zhe Tao
2015-09-27 23:15 ` Ananyev, Konstantin
[not found] ` <2601191342CEEE43887BDE71AB97725836A9CE35@irsmsx105.ger.corp.intel.com>
2015-09-29 13:06 ` [dpdk-dev] FW: " Ananyev, Konstantin
2015-09-29 14:27 ` [dpdk-dev] " Bruce Richardson
2015-09-27 17:05 ` [dpdk-dev] [PATCH 2/4] add vector PMD TX " Zhe Tao
2015-09-27 17:05 ` [dpdk-dev] [PATCH 3/4] add vector PMD scatter RX " Zhe Tao
2015-09-27 17:05 ` [dpdk-dev] [PATCH 4/4] add RX and TX selection function " Zhe Tao
2015-10-30 10:52 ` [dpdk-dev] [PATCH 0/8 v2] i40e: add vector PMD support " Zhe Tao
2015-10-30 10:52 ` [dpdk-dev] [PATCH 1/8 v2] add vector PMD RX " Zhe Tao
2015-10-30 10:52 ` [dpdk-dev] [PATCH 2/8 v2] add vector PMD TX " Zhe Tao
2015-10-30 10:52 ` [dpdk-dev] [PATCH 3/8 v2] add vector PMD scatter RX " Zhe Tao
2015-10-30 10:52 ` [dpdk-dev] [PATCH 4/8 v2] add RX and TX selection function " Zhe Tao
2015-10-30 10:52 ` [dpdk-dev] [PATCH 5/8 v2] edit the comments Zhe Tao
2015-10-30 10:52 ` Zhe Tao [this message]
2015-10-30 10:52 ` [dpdk-dev] [PATCH 7/8 v2] move all the extra definition out of share code Zhe Tao
2015-10-30 10:52 ` [dpdk-dev] [PATCH 8/8 v2] update the release note Zhe Tao
2015-10-30 13:01 ` [dpdk-dev] [PATCH 0/4 v3] i40e: add vector PMD support for FVL Zhe Tao
2015-10-30 13:01 ` [dpdk-dev] [PATCH 1/4 v3] add vector PMD RX " Zhe Tao
2015-10-30 13:40 ` Liang, Cunming
2015-10-30 13:01 ` [dpdk-dev] [PATCH 2/4 v3] add vector PMD TX " Zhe Tao
2015-10-30 13:29 ` Liang, Cunming
2015-11-03 21:20 ` Stephen Hemminger
2015-10-30 13:01 ` [dpdk-dev] [PATCH 3/4 v3] add vector PMD scatter RX " Zhe Tao
2015-10-30 13:46 ` Liang, Cunming
2015-10-30 13:01 ` [dpdk-dev] [PATCH 4/4 v3] add RX and TX selection function " Zhe Tao
2015-10-30 14:16 ` [dpdk-dev] [PATCH 0/4 v4] i40e: add vector PMD support " Zhe Tao
2015-10-30 14:16 ` [dpdk-dev] [PATCH 1/4 v4] add vector PMD RX " Zhe Tao
2015-10-30 15:33 ` Thomas Monjalon
2015-10-30 14:16 ` [dpdk-dev] [PATCH 2/4 v4] add vector PMD TX " Zhe Tao
2015-10-30 14:16 ` [dpdk-dev] [PATCH 3/4 v4] add vector PMD scatter RX " Zhe Tao
2015-10-30 14:16 ` [dpdk-dev] [PATCH 4/4 v4] add RX and TX selection function " Zhe Tao
2015-10-30 15:59 ` Thomas Monjalon
2015-10-30 14:24 ` [dpdk-dev] [PATCH 0/4 v4] i40e: add vector PMD support " Liang, Cunming
2015-10-30 15:41 ` Thomas Monjalon
2015-10-30 16:02 ` Thomas Monjalon
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