[dpdk-dev] [PATCH] net/mlx5: fix CQE decompression for ARM and PowerPC

[Alexander Kozyrev]

The recent Rx code refactoring moved the incrementing
of the CQ completion index out of the rxq_cq_decompress_v()
function to the rxq_burst_v() function.

The advancing of CQ completion index was removed in SSE
version only causing Neon and Altivec Rx bursts to stall.

Remove the incrementation of CQ completion index for all
the architectures in order to fix the stall.

Fixes: bf7d5157ed ("net/mlx5: refactor vectorized Rx")

Signed-off-by: Alexander Kozyrev <akozyrev at nvidia.com>
---
 drivers/net/mlx5/mlx5_rxtx_vec_altivec.h | 1 -
 drivers/net/mlx5/mlx5_rxtx_vec_neon.h    | 1 -
 2 files changed, 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h b/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
index cf3a795843..4af4ccafca 100644
--- a/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
@@ -301,7 +301,6 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
 	rxq->stats.ibytes += rcvd_byte;
 #endif
 
-	rxq->cq_ci += mcqe_n;
 	return mcqe_n;
 }
 
diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_neon.h b/drivers/net/mlx5/mlx5_rxtx_vec_neon.h
index 47b6692942..f194cc99b7 100644
--- a/drivers/net/mlx5/mlx5_rxtx_vec_neon.h
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_neon.h
@@ -240,7 +240,6 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
 	rxq->stats.ipackets += mcqe_n;
 	rxq->stats.ibytes += rcvd_byte;
 #endif
-	rxq->cq_ci += mcqe_n;
 	return mcqe_n;
 }
 
-- 
2.24.1