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net/mlx5: fix first segment inline length

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Packets can be split into several mbufs with various data sizes.
There is no limitation on how small these segments can be.
But there is a limitation on Tx side for inline configuration:
send WQEs with inline headers less than the required are dropped.
The very first segment must be more than minimal inline eth segment.
Enforce this requirement by merging a few segments in this case.

Fixes: ec837ad0fc ("net/mlx5: fix multi-segment inline for the first segments")
Cc: stable@dpdk.org

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
This commit is contained in:
Alexander Kozyrev 2022-11-08 15:45:00 +02:00 committed by Raslan Darawsheh
parent 3b6d78bb8e
commit da4470cb17
1 changed files with 2 additions and 0 deletions
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2
drivers/net/mlx5/mlx5_tx.h
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@ -1994,6 +1994,8 @@ mlx5_tx_packet_multi_inline(struct mlx5_txq_data *__rte_restrict txq,
} else if (mbuf->ol_flags & RTE_MBUF_F_TX_DYNF_NOINLINE ||
nxlen > txq->inlen_send) {
return mlx5_tx_packet_multi_send(txq, loc, olx);
} else if (nxlen <= MLX5_ESEG_MIN_INLINE_SIZE) {
inlen = MLX5_ESEG_MIN_INLINE_SIZE;
} else {
goto do_first;
}