ice: Fix XDP memory leak when NIC is brought up and down

[ Upstream commit 78c50d6961fc05491ebbc71c35d87324b1a4f49a ]

Fix the buffer leak that occurs while switching
the port up and down with traffic and XDP by
checking for an active XDP program and freeing all empty TX buffers.

Fixes: efc2214b6047 ("ice: Add support for XDP")
Signed-off-by: Kamil Maziarz <kamil.maziarz@intel.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Acked-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>

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 6a50f8ba3940c564edba6837e1070d7acfef87eb..4095fe40dfc9b12c20c1cba781aa58b9c25bb537 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6784,6 +6784,10 @@ int ice_down(struct ice_vsi *vsi)
        ice_for_each_txq(vsi, i)
                ice_clean_tx_ring(vsi->tx_rings[i]);
 
+       if (ice_is_xdp_ena_vsi(vsi))
+               ice_for_each_xdp_txq(vsi, i)
+                       ice_clean_tx_ring(vsi->xdp_rings[i]);
+
        ice_for_each_rxq(vsi, i)
                ice_clean_rx_ring(vsi->rx_rings[i]);