net/mlx5: fix TSO multi-segment inline length

The inline data length for TSO ethernet segment should be
calculated from the TSO header instead of the inline size
configured by txq_inline_min devarg or reported by the NIC.
It is imposed by the nature of TSO offload - inline header
is being duplicated to every output TCP packet.

Fixes: cacb44a09962 ("net/mlx5: add no-inline Tx flag")
Cc: stable@dpdk.org
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

diff --git a/drivers/net/mlx5/mlx5_tx.h b/drivers/net/mlx5/mlx5_tx.h
index 634c9d7..1a35919 100644 (file)
--- a/drivers/net/mlx5/mlx5_tx.h
+++ b/drivers/net/mlx5/mlx5_tx.h
@@ -1338,7 +1338,8 @@ mlx5_tx_eseg_mdat(struct mlx5_txq_data *__rte_restrict txq,
                 * Copying may be interrupted inside the routine
                 * if run into no inline hint flag.
                 */
-               copy = tlen >= txq->inlen_mode ? 0 : (txq->inlen_mode - tlen);
+               copy = tso ? inlen : txq->inlen_mode;
+               copy = tlen >= copy ? 0 : (copy - tlen);
                copy = mlx5_tx_mseg_memcpy(pdst, loc, part, copy, olx);
                tlen += copy;
                if (likely(inlen <= tlen) || copy < part) {