diff mbox series

[net,5/6] ice: remove ICE_CFG_BUSY locking from AF_XDP code

Message ID 20240903183034.3530411-6-anthony.l.nguyen@intel.com (mailing list archive)
State Accepted
Commit 7e3b407ccbea3259b8583ccc34807622025e390f
Delegated to: Netdev Maintainers
Headers show
Series ice: fix synchronization between .ndo_bpf() and reset | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 16 this patch: 16
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 16 this patch: 16
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 16 this patch: 16
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 27 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 18 this patch: 18
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-09-04--15-00 (tests: 718)

Commit Message

Tony Nguyen Sept. 3, 2024, 6:30 p.m. UTC 
From: Larysa Zaremba <larysa.zaremba@intel.com>

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>
---
 drivers/net/ethernet/intel/ice/ice_xsk.c | 9 ---------
 1 file changed, 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c
index 8693509efbe7..5dee829bfc47 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;
 }