6.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Larysa Zaremba <larysa.zaremba@xxxxxxxxx>
[ Upstream commit 7e3b407ccbea3259b8583ccc34807622025e390f ]
Locking used in ice_qp_ena() and ice_qp_dis() does pretty much nothing,
because ICE_CFG_BUSY is a state flag that is supposed to be set in a PF
state, not VSI one. Therefore it does not protect the queue pair from
e.g. reset.
Remove ICE_CFG_BUSY locking from ice_qp_dis() and ice_qp_ena().
Fixes: 2d4238f55697 ("ice: Add support for AF_XDP")
Reviewed-by: Wojciech Drewek <wojciech.drewek@xxxxxxxxx>
Reviewed-by: Jacob Keller <jacob.e.keller@xxxxxxxxx>
Tested-by: Chandan Kumar Rout <chandanx.rout@xxxxxxxxx>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
Signed-off-by: Larysa Zaremba <larysa.zaremba@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, 9 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c
index a659951fa987..87a5427570d7 100644
--- a/drivers/net/ethernet/intel/ice/ice_xsk.c
+++ b/drivers/net/ethernet/intel/ice/ice_xsk.c
@@ -165,7 +165,6 @@ static int ice_qp_dis(struct ice_vsi *vsi, u16 q_idx)
struct ice_q_vector *q_vector;
struct ice_tx_ring *tx_ring;
struct ice_rx_ring *rx_ring;
- int timeout = 50;
int fail = 0;
int err;
@@ -176,13 +175,6 @@ static int ice_qp_dis(struct ice_vsi *vsi, u16 q_idx)
rx_ring = vsi->rx_rings[q_idx];
q_vector = rx_ring->q_vector;
- while (test_and_set_bit(ICE_CFG_BUSY, vsi->state)) {
- timeout--;
- if (!timeout)
- return -EBUSY;
- usleep_range(1000, 2000);
- }
-
synchronize_net();
netif_carrier_off(vsi->netdev);
netif_tx_stop_queue(netdev_get_tx_queue(vsi->netdev, q_idx));
@@ -261,7 +253,6 @@ static int ice_qp_ena(struct ice_vsi *vsi, u16 q_idx)
netif_tx_start_queue(netdev_get_tx_queue(vsi->netdev, q_idx));
netif_carrier_on(vsi->netdev);
}
- clear_bit(ICE_CFG_BUSY, vsi->state);
return fail;
}
--
2.43.0
