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From: dapengx.yu@intel.com
To: jia.guo@intel.com, haiyue.wang@intel.com, qiming.yang@intel.com
Cc: dev@dpdk.org, Dapeng Yu <dapengx.yu@intel.com>, stable@dpdk.org
Subject: [dpdk-dev] [PATCH v3] net/ixgbe: disable NFS filtering
Date: Tue, 26 Jan 2021 11:03:08 +0800
Message-ID: <20210126030308.517216-1-dapengx.yu@intel.com> (raw)
In-Reply-To: <20210125031041.429268-1-dapengx.yu@intel.com>

From: Dapeng Yu <dapengx.yu@intel.com>

Disable NFS header filtering whether NFS packets coalescing are
required or not, in order to make RSS can work on NFS packets.

The code without the patch does follow datasheet, but not consistent
with the ixgbe kernel driver. It causes NFS packets to be filtered
and make them flow into queue 0, before RSS can work on them.

Fixes: b826efba6de4 ("net/ixgbe: align register setting when RSC is disabled")
Fixes: 8eecb3295aed ("ixgbe: add LRO support")
Cc: stable@dpdk.org

Signed-off-by: Dapeng Yu <dapengx.yu@intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index cc8f70e6d..2efd054f7 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -4923,15 +4923,11 @@ ixgbe_set_rsc(struct rte_eth_dev *dev)
 	/* RFCTL configuration  */
 	rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
 	if ((rsc_capable) && (rx_conf->offloads & DEV_RX_OFFLOAD_TCP_LRO))
-		/*
-		 * Since NFS packets coalescing is not supported - clear
-		 * RFCTL.NFSW_DIS and RFCTL.NFSR_DIS when RSC is
-		 * enabled.
-		 */
-		rfctl &= ~(IXGBE_RFCTL_RSC_DIS | IXGBE_RFCTL_NFSW_DIS |
-			   IXGBE_RFCTL_NFSR_DIS);
+		rfctl &= ~IXGBE_RFCTL_RSC_DIS;
 	else
 		rfctl |= IXGBE_RFCTL_RSC_DIS;
+	/* disable NFS filtering */
+	rfctl |= IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS;
 	IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
 
 	/* If LRO hasn't been requested - we are done here. */
-- 
2.27.0


  parent reply	other threads:[~2021-01-26  3:03 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-20  9:27 [dpdk-dev] [PATCH] " dapengx.yu
2021-01-22  5:33 ` Guo, Jia
2021-01-22  7:06   ` Yu, DapengX
2021-01-25  3:10 ` [dpdk-dev] [PATCH v2] " dapengx.yu
2021-01-26  2:11   ` Guo, Jia
2021-01-26  2:19     ` Yu, DapengX
2021-01-26  3:03   ` dapengx.yu [this message]
2021-01-26  3:36     ` [dpdk-dev] [PATCH v3] " Guo, Jia
2021-01-26  4:36       ` Zhang, Qi Z

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