6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
[ Upstream commit 405d9999aa0b4ae467ef391d1d9c7e0d30ad0841 ]
Given that ice_qp_dis() is called under rtnl_lock, synchronize_net() can
be called instead of synchronize_rcu() so that XDP rings can finish its
job in a faster way. Also let us do this as earlier in XSK queue disable
flow.
Additionally, turn off regular Tx queue before disabling irqs and NAPI.
Fixes: 2d4238f55697 ("ice: Add support for AF_XDP")
Reviewed-by: Shannon Nelson <shannon.nelson@xxxxxxx>
Tested-by: Chandan Kumar Rout <chandanx.rout@xxxxxxxxx> (A Contingent Worker at Intel)
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/intel/ice/ice_xsk.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c
index a8d0cd3d831a0..67511153081ae 100644
--- a/drivers/net/ethernet/intel/ice/ice_xsk.c
+++ b/drivers/net/ethernet/intel/ice/ice_xsk.c
@@ -52,10 +52,8 @@ static void ice_qp_reset_stats(struct ice_vsi *vsi, u16 q_idx)
static void ice_qp_clean_rings(struct ice_vsi *vsi, u16 q_idx)
{
ice_clean_tx_ring(vsi->tx_rings[q_idx]);
- if (ice_is_xdp_ena_vsi(vsi)) {
- synchronize_rcu();
+ if (ice_is_xdp_ena_vsi(vsi))
ice_clean_tx_ring(vsi->xdp_rings[q_idx]);
- }
ice_clean_rx_ring(vsi->rx_rings[q_idx]);
}
@@ -180,11 +178,12 @@ static int ice_qp_dis(struct ice_vsi *vsi, u16 q_idx)
usleep_range(1000, 2000);
}
+ synchronize_net();
+ netif_tx_stop_queue(netdev_get_tx_queue(vsi->netdev, q_idx));
+
ice_qvec_dis_irq(vsi, rx_ring, q_vector);
ice_qvec_toggle_napi(vsi, q_vector, false);
- netif_tx_stop_queue(netdev_get_tx_queue(vsi->netdev, q_idx));
-
ice_fill_txq_meta(vsi, tx_ring, &txq_meta);
err = ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, 0, tx_ring, &txq_meta);
if (err)
--
2.43.0
