From patchwork Wed Oct 23 15:43:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 13847332 Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) (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 2F4F51CCEE9; Wed, 23 Oct 2024 15:44:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729698251; cv=none; b=V270G0Q+oEoSRI9QtpwtxGbLc3AZIYWbcYq1xmP7dgL2OV9kHxlSjK3T1M8qslWmmDE0z85N/49KR+kAfX0srzwpTb6Ed4T5oBJApCh5DnEQGt7eYZR3ou9VqLT6reEFHAGDkrlQOkL0HLPpSaJ/cW2fhmSNg2h3/1pEebKjvV8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729698251; c=relaxed/simple; bh=3Q3dlvLAs/sXPMb1qDNuGq5SMufPn93IIeoDTDQN6hs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rvzBDisIJfuUbVXneGiQqoIAqe5DTCnwvyG6sOPDPDcIf9AqJ0rV9lj8BWaG79UcJ01MK2rKgl7XQY7QuiI5VGS7zQpPRNB4ZWSjKLY1NCP/1PIwynYCrx/gVT4u/xjvTDMBZ8QWjzZT87IPM6vzqWCmDNJ947R4uBqA/NmqBIs= 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=209.85.214.182 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-f182.google.com with SMTP id d9443c01a7336-20cb7139d9dso64384935ad.1; Wed, 23 Oct 2024 08:44:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729698249; x=1730303049; 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=fiS+4uLi7KwWxf2hS/+lqiCxxDWyZoQdVn1wNhIX8dw=; b=sHBIJ+oeeLgfLaEazDvJKJOQ7mfgpWRC2uTmF8RReju47QdaAsP8m7jOpK87yGryxZ XB/mDorPfLJ/l9hZi4qfYo6GtKBYR1lRWFvMeh8PYMmBOcMYempZrjhqhu5sFw+9AAwx wBY+Uv/AaMUqMV2tC6Pfh70PQyRXmAmlxB3sK5V8p5lsrjxqEoFJoeSFklvggi/NjNvt 1O0uXZNfQxc5FAZCNHgufS0f4TQ8sV7VkDTmib1/muY35VrUQNdXsi5bhsq7E691TuF/ 6F9CUG8IiQJhTzRF3meZEx6zL2eQ7OFAXhFNojTMr9YvAu71Cx5vS5EPYmG8KrwZbmqU DpmA== X-Forwarded-Encrypted: i=1; AJvYcCU05BKKcA6z6C5lkJMSgtV0ds4LFYDBZ1dpSQS11i/6fParJQH+VhBIm/PwJ++LFyl1lexYdsyJQ8dcXWs=@vger.kernel.org, AJvYcCUjEjqz3Om70iv6u98ioMf6OJRrx0j3QQ3C0OceMXT2tJBoxjnP7gvFMXFD//G7UnHGBQIIR/NPTRLB2ZHHiWhv@vger.kernel.org X-Gm-Message-State: AOJu0YyRj2s0SPWCN9ZSOmgxa39z/MuGCIVk0g2Kp6AG9NF8FELLVJFP sKl2uCjhrUjHxJIO8OsdMr6MhmioPEcMxLbpa6uZ/gKtgYAYT881ZMPkf0c= X-Google-Smtp-Source: AGHT+IHKVYwFII+FgdeA/Ug+ahHx5vB6W9ty+r7noIXKmcnI19zzBwv1oQyVPIf460mqnXTILZGFuQ== X-Received: by 2002:a17:902:e851:b0:20c:b3d9:f5bd with SMTP id d9443c01a7336-20fa9e41304mr33951145ad.18.1729698249163; Wed, 23 Oct 2024 08:44:09 -0700 (PDT) Received: from localhost ([2601:646:9e00:f56e:123b:cea3:439a:b3e3]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20e7ef0cbf1sm59149395ad.103.2024.10.23.08.44.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Oct 2024 08:44:08 -0700 (PDT) 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, almasrymina@google.com, sdf@fomichev.me, willemb@google.com, petrm@nvidia.com Subject: [PATCH net-next v5 05/12] selftests: ncdevmem: Remove default arguments Date: Wed, 23 Oct 2024 08:43:55 -0700 Message-ID: <20241023154402.441510-6-sdf@fomichev.me> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241023154402.441510-1-sdf@fomichev.me> References: <20241023154402.441510-1-sdf@fomichev.me> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To make it clear what's required and what's not. Also, some of the values don't seem like a good defaults; for example eth1. Move the invocation comment to the top, add missing -s to the client and cleanup the client invocation a bit to make more readable. Reviewed-by: Mina Almasry Signed-off-by: Stanislav Fomichev --- tools/testing/selftests/net/ncdevmem.c | 61 ++++++++++++++++---------- 1 file changed, 39 insertions(+), 22 deletions(-) diff --git a/tools/testing/selftests/net/ncdevmem.c b/tools/testing/selftests/net/ncdevmem.c index 051dd8bb0d3c..b81b8de165f0 100644 --- a/tools/testing/selftests/net/ncdevmem.c +++ b/tools/testing/selftests/net/ncdevmem.c @@ -1,4 +1,31 @@ // SPDX-License-Identifier: GPL-2.0 +/* + * tcpdevmem netcat. Works similarly to netcat but does device memory TCP + * instead of regular TCP. Uses udmabuf to mock a dmabuf provider. + * + * Usage: + * + * On server: + * ncdevmem -s [-c ] -f eth1 -l -p 5201 + * + * On client: + * echo -n "hello\nworld" | nc -s 5201 -p 5201 + * + * Test data validation: + * + * On server: + * ncdevmem -s [-c ] -f eth1 -l -p 5201 -v 7 + * + * On client: + * yes $(echo -e \\x01\\x02\\x03\\x04\\x05\\x06) | \ + * tr \\n \\0 | \ + * head -c 5G | \ + * nc 5201 -p 5201 + * + * + * Note this is compatible with regular netcat. i.e. the sender or receiver can + * be replaced with regular netcat to test the RX or TX path in isolation. + */ #define _GNU_SOURCE #define __EXPORTED_HEADERS__ @@ -42,32 +69,13 @@ #define MSG_SOCK_DEVMEM 0x2000000 #endif -/* - * tcpdevmem netcat. Works similarly to netcat but does device memory TCP - * instead of regular TCP. Uses udmabuf to mock a dmabuf provider. - * - * Usage: - * - * On server: - * ncdevmem -s -c -f eth1 -l -p 5201 -v 7 - * - * On client: - * yes $(echo -e \\x01\\x02\\x03\\x04\\x05\\x06) | \ - * tr \\n \\0 | \ - * head -c 5G | \ - * nc 5201 -p 5201 - * - * Note this is compatible with regular netcat. i.e. the sender or receiver can - * be replaced with regular netcat to test the RX or TX path in isolation. - */ - -static char *server_ip = "192.168.1.4"; +static char *server_ip; static char *client_ip; -static char *port = "5201"; +static char *port; static size_t do_validation; static int start_queue = 8; static int num_queues = 8; -static char *ifname = "eth1"; +static char *ifname; static unsigned int ifindex; static unsigned int dmabuf_id; @@ -596,6 +604,15 @@ int main(int argc, char *argv[]) } } + if (!server_ip) + error(1, 0, "Missing -s argument\n"); + + if (!port) + error(1, 0, "Missing -p argument\n"); + + if (!ifname) + error(1, 0, "Missing -f argument\n"); + ifindex = if_nametoindex(ifname); for (; optind < argc; optind++)