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| author | Radoslaw Tyl <radoslawx.tyl@intel.com> | 2018-09-05 10:00:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-24 10:23:04 +0300 |
| commit | 1b262d5d5ab87a24fdad8c4ad30f23f79d1bc720 (patch) | |
| tree | 6377ac131ad3fac704c358c3c1bf125577606587 /drivers/net/ethernet/intel | |
| parent | b6ba15616007f9fe0b10eb6e8f0a9ac014e68a6f (diff) | |
| download | linux-1b262d5d5ab87a24fdad8c4ad30f23f79d1bc720.tar.xz | |
ixgbe: Fix ixgbe TX hangs with XDP_TX beyond queue limit
[ Upstream commit 8d7179b1e2d64b3493c0114916486fe92e6109a9 ]
We have Tx hang when number Tx and XDP queues are more than 64.
In XDP always is MTQC == 0x0 (64TxQs). We need more space for Tx queues.
Signed-off-by: Radoslaw Tyl <radoslawx.tyl@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 01c120d656c5..d1472727ef88 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -3490,12 +3490,18 @@ static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter) else mtqc |= IXGBE_MTQC_64VF; } else { - if (tcs > 4) + if (tcs > 4) { mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; - else if (tcs > 1) + } else if (tcs > 1) { mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; - else - mtqc = IXGBE_MTQC_64Q_1PB; + } else { + u8 max_txq = adapter->num_tx_queues + + adapter->num_xdp_queues; + if (max_txq > 63) + mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; + else + mtqc = IXGBE_MTQC_64Q_1PB; + } } IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); |