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ice: add missing WRITE_ONCE when clearing ice_rx_ring::xdp_prog

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[ Upstream commit 6044ca2621 ]

It is read by data path and modified from process context on remote cpu
so it is needed to use WRITE_ONCE to clear the pointer.

Fixes: efc2214b60 ("ice: Add support for XDP")
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Maciej Fijalkowski 2024-07-26 20:17:15 +02:00 committed by Greg Kroah-Hartman
parent ac2a3c759d
commit 9ac083de42
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/intel/ice/ice_txrx.c
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@ -456,7 +456,7 @@ void ice_free_rx_ring(struct ice_rx_ring *rx_ring)
if (rx_ring->vsi->type == ICE_VSI_PF) if (rx_ring->vsi->type == ICE_VSI_PF)
if (xdp_rxq_info_is_reg(&rx_ring->xdp_rxq)) if (xdp_rxq_info_is_reg(&rx_ring->xdp_rxq))
xdp_rxq_info_unreg(&rx_ring->xdp_rxq); xdp_rxq_info_unreg(&rx_ring->xdp_rxq);
rx_ring->xdp_prog = NULL; WRITE_ONCE(rx_ring->xdp_prog, NULL);
if (rx_ring->xsk_pool) { if (rx_ring->xsk_pool) {
kfree(rx_ring->xdp_buf); kfree(rx_ring->xdp_buf);
rx_ring->xdp_buf = NULL; rx_ring->xdp_buf = NULL;