From: Nogah Frankel nogahf@mellanox.com
commit 63dcdd35c1552ca0c911e98ba3389a0729a457f4 upstream.
Stop the SW TX counter from counting the TX header bytes since they are not being sent out.
Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Reviewed-by: Ido Schimmel idosch@mellanox.com Signed-off-by: Nogah Frankel nogahf@mellanox.com Signed-off-by: Jiri Pirko jiri@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -399,7 +399,11 @@ static netdev_tx_t mlxsw_sp_port_xmit(st }
mlxsw_sp_txhdr_construct(skb, &tx_info); - len = skb->len; + /* TX header is consumed by HW on the way so we shouldn't count its + * bytes as being sent. + */ + len = skb->len - MLXSW_TXHDR_LEN; + /* Due to a race we might fail here because of a full queue. In that * unlikely case we simply drop the packet. */