From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Date: Sun, 20 Jun 2021 06:30:28 +0000 (+0300)
Subject: net/mlx5: fix TSO multi-segment inline length
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=52e1ece50aaf526b900120283284834b0a59e3ce;p=dpdk.git

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 634c9d754a..1a35919371 100644
--- 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) {