Similar to the existing mlx5e_post_nop(), but marks a fence
in the WQE control segment.
Added as a separate new function to not hurt the performance
of the common case.
To be used in a downstream patch of the series.
Signed-off-by: Tariq Toukan <tar...@mellanox.com>
Reviewed-by: Boris Pismenny <bor...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
index af6aec717d4e..ef16f9e41cf4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
@@ -58,6 +58,24 @@
return wqe;
}
+static inline struct mlx5e_tx_wqe *
+mlx5e_post_nop_fence(struct mlx5_wq_cyc *wq, u32 sqn, u16 *pc)
+{
+ u16 pi = mlx5_wq_cyc_ctr2ix(wq, *pc);
+ struct mlx5e_tx_wqe *wqe = mlx5_wq_cyc_get_wqe(wq, pi);
+ struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl;
+
+ memset(cseg, 0, sizeof(*cseg));
+
+ cseg->opmod_idx_opcode = cpu_to_be32((*pc << 8) | MLX5_OPCODE_NOP);
+ cseg->qpn_ds = cpu_to_be32((sqn << 8) | 0x01);
+ cseg->fm_ce_se = MLX5_FENCE_MODE_INITIATOR_SMALL;
+
+ (*pc)++;
+
+ return wqe;
+}
+
static inline void
mlx5e_fill_sq_frag_edge(struct mlx5e_txqsq *sq, struct mlx5_wq_cyc *wq,
u16 pi, u16 nnops)
--
1.8.3.1
