From patchwork Fri Jul 5 15:30:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tariq Toukan X-Patchwork-Id: 1128112 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45gJhV75jZz9s7T for ; Sat, 6 Jul 2019 01:30:50 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727874AbfGEPas (ORCPT ); Fri, 5 Jul 2019 11:30:48 -0400 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:52396 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726012AbfGEPas (ORCPT ); Fri, 5 Jul 2019 11:30:48 -0400 Received: from Internal Mail-Server by MTLPINE2 (envelope-from tariqt@mellanox.com) with ESMTPS (AES256-SHA encrypted); 5 Jul 2019 18:30:42 +0300 Received: from dev-l-vrt-207-011.mtl.labs.mlnx. (dev-l-vrt-207-011.mtl.labs.mlnx [10.134.207.11]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x65FUfOk029656; Fri, 5 Jul 2019 18:30:41 +0300 From: Tariq Toukan To: "David S. Miller" Cc: netdev@vger.kernel.org, Eran Ben Elisha , Saeed Mahameed , Jakub Kicinski , moshe@mellanox.com, Tariq Toukan Subject: [PATCH net-next 11/12] net/mlx5e: Introduce a fenced NOP WQE posting function Date: Fri, 5 Jul 2019 18:30:21 +0300 Message-Id: <1562340622-4423-12-git-send-email-tariqt@mellanox.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1562340622-4423-1-git-send-email-tariqt@mellanox.com> References: <1562340622-4423-1-git-send-email-tariqt@mellanox.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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 Reviewed-by: Boris Pismenny Signed-off-by: Saeed Mahameed --- 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)