6.10-stable review patch. If anyone has any objections, please let me know.
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From: Larysa Zaremba larysa.zaremba@intel.com
[ 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@intel.com Reviewed-by: Jacob Keller jacob.e.keller@intel.com Tested-by: Chandan Kumar Rout chandanx.rout@intel.com Reviewed-by: Maciej Fijalkowski maciej.fijalkowski@intel.com Signed-off-by: Larysa Zaremba larysa.zaremba@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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; }