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From: Rasesh Mody <rasesh.mody@qlogic.com>
To: <thomas.monjalon@6wind.com>, <bruce.richardson@intel.com>
Cc: <dev@dpdk.org>, <Dept-EngDPDKDev@qlogic.com>,
	Rasesh Mody <rasesh.mody@qlogic.com>
Subject: [dpdk-dev] [PATCH v2 1/2] bnx2x: disable fast path interrupts
Date: Wed, 20 Jul 2016 12:09:33 -0700	[thread overview]
Message-ID: <1469041774-32359-1-git-send-email-rasesh.mody@qlogic.com> (raw)

Disable fastpath interrupts and remove unneeded delay in
bnx2x_interrupt_action(). This patch fixes and prevents performance
degradation (upto 50% drop) for BNX2X PMD.

Fixes: 540a2110 ("bnx2x: driver core")

Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>
---
 drivers/net/bnx2x/bnx2x.c        |    2 +-
 drivers/net/bnx2x/bnx2x_ethdev.c |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/bnx2x/bnx2x.c b/drivers/net/bnx2x/bnx2x.c
index 95fbad8..a059858 100644
--- a/drivers/net/bnx2x/bnx2x.c
+++ b/drivers/net/bnx2x/bnx2x.c
@@ -4507,7 +4507,7 @@ static void bnx2x_handle_fp_tq(struct bnx2x_fastpath *fp, int scan_fp)
 	}
 
 	bnx2x_ack_sb(sc, fp->igu_sb_id, USTORM_ID,
-		   le16toh(fp->fp_hc_idx), IGU_INT_ENABLE, 1);
+		   le16toh(fp->fp_hc_idx), IGU_INT_DISABLE, 1);
 }
 
 /*
diff --git a/drivers/net/bnx2x/bnx2x_ethdev.c b/drivers/net/bnx2x/bnx2x_ethdev.c
index c8d2bf2..f97dd5b 100644
--- a/drivers/net/bnx2x/bnx2x_ethdev.c
+++ b/drivers/net/bnx2x/bnx2x_ethdev.c
@@ -107,8 +107,8 @@ bnx2x_interrupt_action(struct rte_eth_dev *dev)
 
 	PMD_DEBUG_PERIODIC_LOG(INFO, "Interrupt handled");
 
-	if (bnx2x_intr_legacy(sc, 0))
-		DELAY_MS(250);
+	bnx2x_intr_legacy(sc, 0);
+
 	if (sc->periodic_flags & PERIODIC_GO)
 		bnx2x_periodic_callout(sc);
 	link_status = REG_RD(sc, sc->link_params.shmem_base +
-- 
1.7.10.3

             reply	other threads:[~2016-07-20 19:09 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-20 19:09 Rasesh Mody [this message]
2016-07-20 19:09 ` [dpdk-dev] [PATCH v2 2/2] bnx2x: fix fw mempool name length Rasesh Mody
2016-07-21 22:35   ` Thomas Monjalon

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