ice: check (DD | EOF) bits on Rx descriptor rather than (EOP | RS)

commit 283d736ff7c7e96ac5b32c6c0de40372f8eb171e upstream.

Tx side sets EOP and RS bits on descriptors to indicate that a
particular descriptor is the last one and needs to generate an irq when
it was sent. These bits should not be checked on completion path
regardless whether it's the Tx or the Rx. DD bit serves this purpose and
it indicates that a particular descriptor is either for Rx or was
successfully Txed. EOF is also set as loopback test does not xmit
fragmented frames.

Look at (DD | EOF) bits setting in ice_lbtest_receive_frames() instead
of EOP and RS pair.

Fixes: 0e674aeb0b77 ("ice: Add handler for ethtool selftest")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: George Kuruvinakunnel <george.kuruvinakunnel@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index 060897eb9cabe28a28ebffbefc74f5de386f054f..7f1bf71844bce0e10e88e62ee9de05e9af6b1078 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -652,7 +652,8 @@ static int ice_lbtest_receive_frames(struct ice_ring *rx_ring)
                rx_desc = ICE_RX_DESC(rx_ring, i);
 
                if (!(rx_desc->wb.status_error0 &
-                   cpu_to_le16(ICE_TX_DESC_CMD_EOP | ICE_TX_DESC_CMD_RS)))
+                   (cpu_to_le16(BIT(ICE_RX_FLEX_DESC_STATUS0_DD_S)) |
+                    cpu_to_le16(BIT(ICE_RX_FLEX_DESC_STATUS0_EOF_S)))))
                        continue;
 
                rx_buf = &rx_ring->rx_buf[i];