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net/ixgbe: disable NFS filtering

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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>
Acked-by: Jeff Guo <jia.guo@intel.com>
This commit is contained in:
Dapeng Yu 2021-01-26 11:03:08 +08:00 committed by Ferruh Yigit
parent f3bbf08faf
commit 68643843e7
1 changed files with 3 additions and 7 deletions
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10
drivers/net/ixgbe/ixgbe_rxtx.c
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@ -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. */