ice: Fix the bytecount sent to netdev_tx_sent_queue

[ Upstream commit d944b46992f8e99b6bdc721e44b02e5ca294fa2b ]

Currently if the driver does a TSO offload the bytecount sent to
netdev_tx_sent_queue will be incorrect. This is because in ice_tso we
overwrite the initial value that we set in ice_tx_map. This creates a
mismatch between the Tx and Tx clean flow. In the Tx clean flow we
calculate the bytecount (called total_bytes) as we clean the
descriptors so the value used in the Tx clean path is correct. Fix this
by using += in ice_tso instead of =. This fixes the mismatch in
bytecount mentioned above.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index 6481e3d..0c95c8f 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -1519,7 +1519,7 @@ int ice_tso(struct ice_tx_buf *first, struct ice_tx_offload_params *off)
 
        /* update gso_segs and bytecount */
        first->gso_segs = skb_shinfo(skb)->gso_segs;
-       first->bytecount = (first->gso_segs - 1) * off->header_len;
+       first->bytecount += (first->gso_segs - 1) * off->header_len;
 
        cd_tso_len = skb->len - off->header_len;
        cd_mss = skb_shinfo(skb)->gso_size;