From patchwork Thu Nov 7 18:12:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 841567 Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A15C4218300; Thu, 7 Nov 2024 18:12:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731003145; cv=none; b=J0dM0FIQpZDwvcnFy+3ChjuTPQVSQw4vJiXiIToK8SFGL6OI4ICtdUGp1tKzvmSWHeBYMM43fJ9Usly6ZvSgx6WBfEWwe0CNSS3+1g/RshL2UxxUci/kaGfa6UlV2KaeQ+g0Rknx2fMDdwsO5pw6EBrghHEYxj9BPDdJzxf91k0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731003145; c=relaxed/simple; bh=IpP00aCuowF9QGCHU0HXnhDTJIAjGcRrPT96a5RuCBc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZX5B2ndoxCi9QRBKqo0YutFbaIG1cNbFDwUZxeQzFabMBpqcgTc77Zr3eaU2xH2yIAgVh3oVmB3BHDEw2WLGUpxzrwX+JnwrdCIv0q7UgSGkALxRKFIAKYcrDHicuf92sbn7P/DXGaGhX4ZQI4LPxbu2O6K1gfZJhX4qPNaOKuM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fomichev.me; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.214.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fomichev.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pl1-f176.google.com with SMTP id d9443c01a7336-2110a622d76so10770165ad.3; Thu, 07 Nov 2024 10:12:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731003143; x=1731607943; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Em1uH7WWwP9uLKDu0J9tx3ubhx+AkkX/SgdwOrqLhXk=; b=f6ZpIvFsw4XnlhLLS4sipr3xoYTy7nJxIIiXFLGWYUD7FeDtaSO8iFIbwYOiyBjFUo VtGb2AIZ0iAB/uGCC9yTAXFjorr27mbraXa9BrcNUFCHDjAFyo1LA8MicXtpasmVqsMX lhcyF2cbK8kxnjYGhZo41tYXUGeTsKKIR1EaJTCQHJ0udvSE2V0KN4Cep09h3u15xMnH exqSWZSOzwT6/4mzmYuskR9QoVaeD5YB4H8mW7HRwYz176HH7wq9vPVWvDbw+YwvsPZ2 3An00RFky/MHbBO4FO/+zs/GF6qUwyWcthMDRLwFXDyRx9O7ktGPkfy6o9gicYe4U607 3y6g== X-Forwarded-Encrypted: i=1; AJvYcCUjNzV1bAyFyEKXXSpuUYVMJC58CqoEvTD6j7TvYsYHWz/PTKA/xCJuMPhzIG8OnySmdbEtnbW9PRLsodie0Ak+@vger.kernel.org, AJvYcCVAKeVFkNOtHdQN44p/KqfDiJ2b9GQKlPQ9Yp1rqEAw0KowUXa+OE1S48p2lcvkv1H1jZHV+1P9vmYwUoU=@vger.kernel.org X-Gm-Message-State: AOJu0YzvFkWWUxpTykccagacbObWA7jWsznAJg2yxyc0GaoOWDNuI+2L wNdZNxiVzLQC+dAdestarSCuafn4uOQBuHpphlp1AG449atJxglDth75 X-Google-Smtp-Source: AGHT+IGRTlUxM7UsRogy1kztiQGDP7ZnWrUD40jI8gSq4yJP0icpO11xsRiE+cpHtLs7Y1xAml21Jw== X-Received: by 2002:a17:902:ec83:b0:20c:8abc:733a with SMTP id d9443c01a7336-211823dab1emr3832125ad.53.1731003142793; Thu, 07 Nov 2024 10:12:22 -0800 (PST) Received: from localhost ([2601:646:9e00:f56e:123b:cea3:439a:b3e3]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21177dc8354sm15192615ad.4.2024.11.07.10.12.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Nov 2024 10:12:22 -0800 (PST) From: Stanislav Fomichev To: netdev@vger.kernel.org Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, andrew+netdev@lunn.ch, shuah@kernel.org, horms@kernel.org, almasrymina@google.com, sdf@fomichev.me, willemb@google.com, petrm@nvidia.com, jdamato@fastly.com Subject: [PATCH net-next v8 08/12] selftests: ncdevmem: Use YNL to enable TCP header split Date: Thu, 7 Nov 2024 10:12:07 -0800 Message-ID: <20241107181211.3934153-9-sdf@fomichev.me> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241107181211.3934153-1-sdf@fomichev.me> References: <20241107181211.3934153-1-sdf@fomichev.me> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In the next patch the hard-coded queue numbers are gonna be removed. So introduce some initial support for ethtool YNL and use it to enable header split. Also, tcp-data-split requires latest ethtool which is unlikely to be present in the distros right now. (ideally, we should not shell out to ethtool at all). Reviewed-by: Mina Almasry Reviewed-by: Joe Damato Signed-off-by: Stanislav Fomichev --- tools/testing/selftests/net/Makefile | 2 +- tools/testing/selftests/net/ncdevmem.c | 57 +++++++++++++++++++++++++- 2 files changed, 56 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 26a4883a65c9..759b1d2dc8b4 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -111,7 +111,7 @@ TEST_INCLUDES := forwarding/lib.sh include ../lib.mk # YNL build -YNL_GENS := netdev +YNL_GENS := ethtool netdev include ynl.mk $(OUTPUT)/epoll_busy_poll: LDLIBS += -lcap diff --git a/tools/testing/selftests/net/ncdevmem.c b/tools/testing/selftests/net/ncdevmem.c index ad6de8e0e97b..9ca2da3a2f63 100644 --- a/tools/testing/selftests/net/ncdevmem.c +++ b/tools/testing/selftests/net/ncdevmem.c @@ -55,10 +55,12 @@ #include #include #include +#include #include #include #include "netdev-user.h" +#include "ethtool-user.h" #include #define PAGE_SHIFT 12 @@ -231,10 +233,58 @@ static int reset_flow_steering(void) return 0; } +static const char *tcp_data_split_str(int val) +{ + switch (val) { + case 0: + return "off"; + case 1: + return "auto"; + case 2: + return "on"; + default: + return "?"; + } +} + static int configure_headersplit(bool on) { - return run_command("sudo ethtool -G %s tcp-data-split %s >&2", ifname, - on ? "on" : "off"); + struct ethtool_rings_get_req *get_req; + struct ethtool_rings_get_rsp *get_rsp; + struct ethtool_rings_set_req *req; + struct ynl_error yerr; + struct ynl_sock *ys; + int ret; + + ys = ynl_sock_create(&ynl_ethtool_family, &yerr); + if (!ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return -1; + } + + req = ethtool_rings_set_req_alloc(); + ethtool_rings_set_req_set_header_dev_index(req, ifindex); + /* 0 - off, 1 - auto, 2 - on */ + ethtool_rings_set_req_set_tcp_data_split(req, on ? 2 : 0); + ret = ethtool_rings_set(ys, req); + if (ret < 0) + fprintf(stderr, "YNL failed: %s\n", ys->err.msg); + ethtool_rings_set_req_free(req); + + if (ret == 0) { + get_req = ethtool_rings_get_req_alloc(); + ethtool_rings_get_req_set_header_dev_index(get_req, ifindex); + get_rsp = ethtool_rings_get(ys, get_req); + ethtool_rings_get_req_free(get_req); + if (get_rsp) + fprintf(stderr, "TCP header split: %s\n", + tcp_data_split_str(get_rsp->tcp_data_split)); + ethtool_rings_get_rsp_free(get_rsp); + } + + ynl_sock_destroy(ys); + + return ret; } static int configure_rss(void) @@ -382,6 +432,9 @@ int do_server(struct memory_buffer *mem) if (reset_flow_steering()) error(1, 0, "Failed to reset flow steering\n"); + if (configure_headersplit(1)) + error(1, 0, "Failed to enable TCP header split\n"); + /* Configure RSS to divert all traffic from our devmem queues */ if (configure_rss()) error(1, 0, "Failed to configure rss\n");