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From: Harman Kalra <hkalra@marvell.com>
To: Pavan Nikhilesh <pbhagavatula@marvell.com>,
	Jerin Jacob <jerinj@marvell.com>,
	Nithin Dabilpuram <ndabilpuram@marvell.com>,
	"Kiran Kumar K" <kirankumark@marvell.com>
Cc: <dev@dpdk.org>
Subject: [dpdk-dev] [PATCH v2 2/4] event/octeontx2: improve single flow performance
Date: Fri,  9 Oct 2020 00:18:44 +0530
Message-ID: <1602182927-18254-2-git-send-email-hkalra@marvell.com> (raw)
In-Reply-To: <1602182927-18254-1-git-send-email-hkalra@marvell.com>

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Improve single flow performance by moving the point of coherence
to the end of transmit sequence.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
V2:
* replace rte_cio_wmb with rte_io_wmb

 drivers/event/octeontx2/otx2_worker.h | 35 +++++++++++++++++----------
 drivers/net/octeontx2/otx2_tx.h       | 18 ++++++++++++++
 2 files changed, 40 insertions(+), 13 deletions(-)

diff --git a/drivers/event/octeontx2/otx2_worker.h b/drivers/event/octeontx2/otx2_worker.h
index 80dfe3e73..757fa6fe5 100644
--- a/drivers/event/octeontx2/otx2_worker.h
+++ b/drivers/event/octeontx2/otx2_worker.h
@@ -247,15 +247,6 @@ otx2_ssogws_head_wait(struct otx2_ssogws *ws)
 #endif
 }
 
-static __rte_always_inline void
-otx2_ssogws_order(struct otx2_ssogws *ws, const uint8_t wait_flag)
-{
-	if (wait_flag)
-		otx2_ssogws_head_wait(ws);
-
-	rte_io_wmb();
-}
-
 static __rte_always_inline const struct otx2_eth_txq *
 otx2_ssogws_xtract_meta(struct rte_mbuf *m,
 			const uint64_t txq_data[][RTE_MAX_QUEUES_PER_PORT])
@@ -287,10 +278,9 @@ otx2_ssogws_event_tx(struct otx2_ssogws *ws, struct rte_event ev[],
 		return otx2_sec_event_tx(ws, ev, m, txq, flags);
 	}
 
-	rte_prefetch_non_temporal(&txq_data[m->port][0]);
 	/* Perform header writes before barrier for TSO */
 	otx2_nix_xmit_prepare_tso(m, flags);
-	otx2_ssogws_order(ws, !ev->sched_type);
+	rte_io_wmb();
 	txq = otx2_ssogws_xtract_meta(m, txq_data);
 	otx2_ssogws_prepare_pkt(txq, m, cmd, flags);
 
@@ -298,12 +288,31 @@ otx2_ssogws_event_tx(struct otx2_ssogws *ws, struct rte_event ev[],
 		const uint16_t segdw = otx2_nix_prepare_mseg(m, cmd, flags);
 		otx2_nix_xmit_prepare_tstamp(cmd, &txq->cmd[0],
 					     m->ol_flags, segdw, flags);
-		otx2_nix_xmit_mseg_one(cmd, txq->lmt_addr, txq->io_addr, segdw);
+		if (!ev->sched_type) {
+			otx2_nix_xmit_mseg_prep_lmt(cmd, txq->lmt_addr, segdw);
+			otx2_ssogws_head_wait(ws);
+			if (otx2_nix_xmit_submit_lmt(txq->io_addr) == 0)
+				otx2_nix_xmit_mseg_one(cmd, txq->lmt_addr,
+						       txq->io_addr, segdw);
+		} else {
+			otx2_nix_xmit_mseg_one(cmd, txq->lmt_addr, txq->io_addr,
+					       segdw);
+		}
 	} else {
 		/* Passing no of segdw as 4: HDR + EXT + SG + SMEM */
 		otx2_nix_xmit_prepare_tstamp(cmd, &txq->cmd[0],
 					     m->ol_flags, 4, flags);
-		otx2_nix_xmit_one(cmd, txq->lmt_addr, txq->io_addr, flags);
+
+		if (!ev->sched_type) {
+			otx2_nix_xmit_prep_lmt(cmd, txq->lmt_addr, flags);
+			otx2_ssogws_head_wait(ws);
+			if (otx2_nix_xmit_submit_lmt(txq->io_addr) == 0)
+				otx2_nix_xmit_one(cmd, txq->lmt_addr,
+						  txq->io_addr, flags);
+		} else {
+			otx2_nix_xmit_one(cmd, txq->lmt_addr, txq->io_addr,
+					  flags);
+		}
 	}
 
 	otx2_write64(0, ws->swtag_flush_op);
diff --git a/drivers/net/octeontx2/otx2_tx.h b/drivers/net/octeontx2/otx2_tx.h
index 3c4317092..caf170fd1 100644
--- a/drivers/net/octeontx2/otx2_tx.h
+++ b/drivers/net/octeontx2/otx2_tx.h
@@ -383,6 +383,18 @@ otx2_nix_xmit_one(uint64_t *cmd, void *lmt_addr,
 	} while (lmt_status == 0);
 }
 
+static __rte_always_inline void
+otx2_nix_xmit_prep_lmt(uint64_t *cmd, void *lmt_addr, const uint32_t flags)
+{
+	otx2_lmt_mov(lmt_addr, cmd, otx2_nix_tx_ext_subs(flags));
+}
+
+static __rte_always_inline uint64_t
+otx2_nix_xmit_submit_lmt(const rte_iova_t io_addr)
+{
+	return otx2_lmt_submit(io_addr);
+}
+
 static __rte_always_inline uint16_t
 otx2_nix_prepare_mseg(struct rte_mbuf *m, uint64_t *cmd, const uint16_t flags)
 {
@@ -453,6 +465,12 @@ otx2_nix_prepare_mseg(struct rte_mbuf *m, uint64_t *cmd, const uint16_t flags)
 	return segdw;
 }
 
+static __rte_always_inline void
+otx2_nix_xmit_mseg_prep_lmt(uint64_t *cmd, void *lmt_addr, uint16_t segdw)
+{
+	otx2_lmt_mov_seg(lmt_addr, (const void *)cmd, segdw);
+}
+
 static __rte_always_inline void
 otx2_nix_xmit_mseg_one(uint64_t *cmd, void *lmt_addr,
 		       rte_iova_t io_addr, uint16_t segdw)
-- 
2.18.0


  reply	other threads:[~2020-10-08 18:49 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-15 18:56 [dpdk-dev] [PATCH 1/4] event/octeontx2: add switch tag flush op Harman Kalra
2020-09-15 18:56 ` [dpdk-dev] [PATCH 2/4] event/octeontx2: improve single flow performance Harman Kalra
2020-10-05  9:29   ` Jerin Jacob
2020-10-08 18:48     ` [dpdk-dev] [PATCH v2 1/4] event/octeontx2: add switch tag flush op Harman Kalra
2020-10-08 18:48       ` Harman Kalra [this message]
2020-10-08 18:48       ` [dpdk-dev] [PATCH v2 3/4] net/octeontx2: fix jumbo frame crash Harman Kalra
2020-10-16  4:04         ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
2020-10-08 18:48       ` [dpdk-dev] [PATCH v2 4/4] app/eventdev: enable fast free offload Harman Kalra
2020-10-11 10:33         ` Jerin Jacob
2020-10-13 19:06           ` Jerin Jacob
2020-10-11 10:40       ` [dpdk-dev] [PATCH v2 1/4] event/octeontx2: add switch tag flush op Jerin Jacob
2020-09-15 18:56 ` [dpdk-dev] [PATCH 3/4] net/octeontx2: fix jumbo frame crash Harman Kalra
2020-09-15 18:56 ` [dpdk-dev] [PATCH 4/4] app/eventdev: enable fast free offload Harman Kalra
2020-10-05  9:26   ` Jerin Jacob

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