[dpdk-dev] [PATCH v2] net/mlx5: fix concurrent use of Tx offloads

[Dekel Peled]

Original patch implemented the use of match_metadata offload in the
different burst functions.
The concurrent use of match_metadata and multi_segs offloads was
not handled.

This patch updates function txq_scatter_v(), to pass metadata value
from mbuf to wqe, when indicated by offload flags.

Fixes: 6bd7fbd03c62 ("net/mlx5: support metadata as flow rule criteria")
Cc: stable at dpdk.org

Signed-off-by: Dekel Peled <dekelp at mellanox.com>

---
v2: Apply code review comments.
---
---
 drivers/net/mlx5/mlx5_rxtx_vec_neon.h | 11 ++++++++---
 drivers/net/mlx5/mlx5_rxtx_vec_sse.h  | 11 +++++++----
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_neon.h b/drivers/net/mlx5/mlx5_rxtx_vec_neon.h
index 883fe1b..7353457 100644
--- a/drivers/net/mlx5/mlx5_rxtx_vec_neon.h
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_neon.h
@@ -104,6 +104,8 @@
 		sizeof(struct mlx5_wqe) / MLX5_WQE_DWORD_SIZE;
 	unsigned int n;
 	volatile struct mlx5_wqe *wqe = NULL;
+	bool metadata_ol =
+		txq->offloads & DEV_TX_OFFLOAD_MATCH_METADATA ? true : false;
 
 	assert(elts_n > pkts_n);
 	mlx5_tx_complete(txq);
@@ -127,6 +129,9 @@
 		uint8x16_t *t_wqe;
 		uint8_t *dseg;
 		uint8x16_t ctrl;
+		rte_be32_t metadata = (metadata_ol &&
+				       (pkts[n]->ol_flags & PKT_TX_METADATA)) ?
+					pkts[n]->tx_metadata : 0;
 
 		assert(segs_n);
 		max_elts = elts_n - (elts_head - txq->elts_tail);
@@ -164,9 +169,9 @@
 		ctrl = vqtbl1q_u8(ctrl, ctrl_shuf_m);
 		vst1q_u8((void *)t_wqe, ctrl);
 		/* Fill ESEG in the header. */
-		vst1q_u16((void *)(t_wqe + 1),
-			  ((uint16x8_t) { 0, 0, cs_flags, rte_cpu_to_be_16(len),
-					  0, 0, 0, 0 }));
+		vst1q_u32((void *)(t_wqe + 1), ((uint32x4_t){ 0,
+			  cs_flags << 16 | rte_cpu_to_be_16(len),
+			  metadata, 0 }));
 		txq->wqe_ci = wqe_ci;
 	}
 	if (!n)
diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_sse.h b/drivers/net/mlx5/mlx5_rxtx_vec_sse.h
index 14117c4..7b580d3 100644
--- a/drivers/net/mlx5/mlx5_rxtx_vec_sse.h
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_sse.h
@@ -104,6 +104,8 @@
 		sizeof(struct mlx5_wqe) / MLX5_WQE_DWORD_SIZE;
 	unsigned int n;
 	volatile struct mlx5_wqe *wqe = NULL;
+	bool metadata_ol =
+		txq->offloads & DEV_TX_OFFLOAD_MATCH_METADATA ? true : false;
 
 	assert(elts_n > pkts_n);
 	mlx5_tx_complete(txq);
@@ -125,6 +127,9 @@
 		uint16_t max_wqe;
 		__m128i *t_wqe, *dseg;
 		__m128i ctrl;
+		rte_be32_t metadata = (metadata_ol &&
+				       (pkts[n]->ol_flags & PKT_TX_METADATA)) ?
+					pkts[n]->tx_metadata : 0;
 
 		assert(segs_n);
 		max_elts = elts_n - (elts_head - txq->elts_tail);
@@ -164,10 +169,8 @@
 		ctrl = _mm_shuffle_epi8(ctrl, shuf_mask_ctrl);
 		_mm_store_si128(t_wqe, ctrl);
 		/* Fill ESEG in the header. */
-		_mm_store_si128(t_wqe + 1,
-				_mm_set_epi16(0, 0, 0, 0,
-					      rte_cpu_to_be_16(len), cs_flags,
-					      0, 0));
+		_mm_store_si128(t_wqe + 1, _mm_set_epi32(0, metadata,
+				(rte_cpu_to_be_16(len) << 16) | cs_flags, 0));
 		txq->wqe_ci = wqe_ci;
 	}
 	if (!n)
-- 
1.8.3.1