From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1166EC47254 for ; Fri, 8 May 2020 11:10:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E1476208CA for ; Fri, 8 May 2020 11:10:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="XQWUPSM7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727838AbgEHLKW (ORCPT ); Fri, 8 May 2020 07:10:22 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:57472 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727832AbgEHLKV (ORCPT ); Fri, 8 May 2020 07:10:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588936219; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Lcm/SFLtz33dZ2kaMLmjswPDyn0b4V2Shn7nozNXSFM=; b=XQWUPSM7nlZxF4aXy6LxwvrsTz5ejuhZ1gnbCZ1j9hQ4C4vuPmkvWWU3AEhJArbcdQhYl/ 09GaMSyQqDH0gdzNs8CLOPz1S5HpM38u3XI3UUlbm/weAT+68zrshlx1ItUaaOA6bUMzD2 4ZKudr1PQ5dTB9JP5Jj9ikGKrFIahjc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-285-4F7XIMUlM_KnGhLjWH-Cdg-1; Fri, 08 May 2020 07:10:16 -0400 X-MC-Unique: 4F7XIMUlM_KnGhLjWH-Cdg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 24FD2BFC2; Fri, 8 May 2020 11:10:14 +0000 (UTC) Received: from firesoul.localdomain (unknown [10.40.208.11]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5F0142E045; Fri, 8 May 2020 11:10:08 +0000 (UTC) Received: from [192.168.42.3] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 47B05300020FB; Fri, 8 May 2020 13:10:07 +0200 (CEST) Subject: [PATCH net-next v3 16/33] mlx4: add XDP frame size and adjust max XDP MTU From: Jesper Dangaard Brouer To: sameehj@amazon.com Cc: Jesper Dangaard Brouer , netdev@vger.kernel.org, bpf@vger.kernel.org, =?utf-8?q?Toke_H=C3=B8iland-J=C3=B8rgensen?= , Daniel Borkmann , Alexei Starovoitov , "David S. Miller" , John Fastabend , Alexander Duyck , Jeff Kirsher , David Ahern , Ilias Apalodimas , Lorenzo Bianconi , Saeed Mahameed , Tariq Toukan Date: Fri, 08 May 2020 13:10:07 +0200 Message-ID: <158893620721.2321140.7755673956141524490.stgit@firesoul> In-Reply-To: <158893607924.2321140.16117992313983615627.stgit@firesoul> References: <158893607924.2321140.16117992313983615627.stgit@firesoul> User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The mlx4 drivers size of memory backing the RX packet is stored in frag_stride. For XDP mode this will be PAGE_SIZE (normally 4096). For normal mode frag_stride is 2048. Also adjust MLX4_EN_MAX_XDP_MTU to take tailroom into account. Cc: Tariq Toukan Cc: Saeed Mahameed Signed-off-by: Jesper Dangaard Brouer Reviewed-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 3 ++- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 43dcbd8214c6..5bd3cd37d50f 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -51,7 +51,8 @@ #include "en_port.h" #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \ - XDP_PACKET_HEADROOM)) + XDP_PACKET_HEADROOM - \ + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))) int mlx4_en_setup_tc(struct net_device *dev, u8 up) { diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 787139219813..8a10285b0e10 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -683,6 +683,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud rcu_read_lock(); xdp_prog = rcu_dereference(ring->xdp_prog); xdp.rxq = &ring->xdp_rxq; + xdp.frame_sz = priv->frag_info[0].frag_stride; doorbell_pending = 0; /* We assume a 1:1 mapping between CQEs and Rx descriptors, so Rx