From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6FE5C3BBA07 for ; Tue, 14 Apr 2026 09:09:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776157746; cv=none; b=D2fYmVvI+BvhEaCBaBBTXdK77WGnVw3ofazTLy5skugo3FFPthSZbUaR4cAZqTrb+URq7bU2c0zvDsaic/jil5IW/M2S9Jq5lXmUYl2mJYZYDSXY/dDEk6Sdaa4fzv/f8IWiPUWLIxqs5EAbYrcU+PTNU5YEJzraHL5NT4t3uXE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776157746; c=relaxed/simple; bh=KHwVwvdW8+/51wnJjG3RP3NUzvq0DnMcvlt8hTAVStw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=PjniQVp3oNqBqufkBYSkLId6G8EWUGxS+nf8mtwwQ4oVAMScSBlIPwecaI4ZY138rboeU8ZtvTFw84LwBfzPFdH4+Azx0zaRCWXOAh8NqvUokK5MbZkphPGqHkMiOSHS6s3gjSmhoQ33PWYin7IM3RCNaOwe15aCBAVyCb7lKwo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=LtcL/LM9; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b=trukhHo7; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LtcL/LM9"; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b="trukhHo7" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1776157744; 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=WkPnqRGl1gXZbEvB1A+stpFWNQBl4kOwSYgNSHlYul0=; b=LtcL/LM9/y4oEdnWu9uHMDGv70kme5rp+4ymYKpa+rD6paGebID8UygZ0PipZOeRRmX9Bn wa6WNFK4V1uWlbZRFoasVnwzpCAUPKujz8NgeYFJ2+9NR803Ez/lO7imMXk2p/hVTLQgb+ 9C7YsWNosqCJusQeSF6SPJrpU3tH5Cw= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-570-NhN778nuNTCUEOxgJjGJrg-1; Tue, 14 Apr 2026 05:09:00 -0400 X-MC-Unique: NhN778nuNTCUEOxgJjGJrg-1 X-Mimecast-MFC-AGG-ID: NhN778nuNTCUEOxgJjGJrg_1776157739 Received: by mail-wr1-f69.google.com with SMTP id ffacd0b85a97d-43cf5b4dac8so5693410f8f.0 for ; Tue, 14 Apr 2026 02:09:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=google; t=1776157739; x=1776762539; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=WkPnqRGl1gXZbEvB1A+stpFWNQBl4kOwSYgNSHlYul0=; b=trukhHo7ToUrLsQlJGHUpMzXkV0j86zm3SP5ZEPi7KRyfNoGLf0NxIIJAbT1a1oBL5 L/liApKE5PbXS+TepVKrNR6ck9jJZXoEOnRqLcAncP3u3A/2B8LFCWcHxgMo5L1uKUWb z3tkVFfSmA+ahZQpD7I/S1dSwRH4MhutbW5TeXWJlYl/79WW/l65mDnneYvOKZT9+E46 WqTmBZbXfxm4AJalX+yAoq3GWsdL0tUYIW2GKChEj+Y0iZxOYZzn/7zB6la4MWAvadWZ Ka1QBTvBHtqTonfZ2Q58ppFf3+yWRPV0s9wjtbiLIsABxMGL+r4asfF8ksAAIstKdm5l BuSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776157739; x=1776762539; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=WkPnqRGl1gXZbEvB1A+stpFWNQBl4kOwSYgNSHlYul0=; b=cGmr0/Xc0/pF18Ht/yNUq7bzjeM3+Oeso3+doKg+AixYYA5gpXHxoLSUyn2UorCJN5 SoZS9i9XFpdGnMe47EuIrbdHTBFr6WUs0wstHBXit22aLbFn7kyus4SmJyKUlCcSvP/5 UV8Jn3C3DXcHultPpJH17w4VPLQxYNaS9CfT86i8PKyobGu/aIz7f0YUjsPT4vCEPVg9 k1Yb4JFVYgG4iP6O0ZMbQtaGR6bnDfrSh8XfpSXn6AkQcOkby+6lS+LUzlNRYlalUF1c skYl0sktRCaVIrt/35IIy3D36/M6Kz9TYC2Ex81KrHayZy46jHRgCZtDynHelnuNCTcZ k9ew== X-Forwarded-Encrypted: i=1; AFNElJ8R2f0B8zvcq/OctHqiLypD3FZEiadmbTW3FQCSfLfo8m3D23Io+ibS2wl6Jad0vESn3IUPw2TextPi9iAP0so=@vger.kernel.org X-Gm-Message-State: AOJu0YyuecUxj9B+kM+/ryoeiUD9VQTogaHefbPnDvbU/QYvwg+5EHVM 2FgqQ+90XhUdYCMGnkHyBL4Yc0Q7XhynuTNbuLFg8ZMbkclcLDA58K2rQOn2+f//WTKCa/1aql3 SaPCW+FLyP4Zwl1KipNo+fuusRruWKNz1SphG9blnT0AIw1h+cXYP737cmqtTr+tsGfCgLA== X-Gm-Gg: AeBDieseISJfL2H6reDQUwDF8mburnWizhUfOg5X3XndH9rCTZgMVFg4dafQVf+HmbK 95SIm57JuveqdeaHnIQFddLD0EDdPkFBmTT8d+Ec1EcBqXBKnps4Fc+7f3IP3/3iTzIN+NcwYcA fbnyEcnUFqMtzHq35by1mhywluNFV6+kv/Sc6AYR8Q+oaFcucmJ/l5mMx4+lhWW7eRkR1vyHgnm L2WNxZwajous7owgS8sYE/NCEx7Fye9hujWU5w/qaXUzKVxOGJ25B7VpufUsOldwzIDNvNG7QHu lwx9+CMeIvYtrLDaS0bWR148Y+XKeV7QPQu4ZqplwStNCGzWuXRrXNGzhOIb+yK3Qz7Stp63k21 vUsrbYfcP/eUyVA1gEI6od8KQ6JCPCd1nzJnMTwtHpBT269vSu18GLs8S X-Received: by 2002:a05:6000:24c3:b0:43d:77a8:3bb6 with SMTP id ffacd0b85a97d-43d77a83df5mr11097051f8f.47.1776157739325; Tue, 14 Apr 2026 02:08:59 -0700 (PDT) X-Received: by 2002:a05:6000:24c3:b0:43d:77a8:3bb6 with SMTP id ffacd0b85a97d-43d77a83df5mr11096988f8f.47.1776157738818; Tue, 14 Apr 2026 02:08:58 -0700 (PDT) Received: from [192.168.88.32] ([216.128.11.125]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43d63e5061fsm41420908f8f.30.2026.04.14.02.08.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Apr 2026 02:08:58 -0700 (PDT) Message-ID: <6b22a595-cd65-42ec-b332-c835273bc174@redhat.com> Date: Tue, 14 Apr 2026 11:08:56 +0200 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v2 2/2] selftests/bpf: verify syncookie statistics in tcp_custom_syncookie To: Kuniyuki Iwashima , Jiayuan Chen Cc: netdev@vger.kernel.org, Eric Dumazet , Neal Cardwell , "David S. Miller" , Jakub Kicinski , Simon Horman , David Ahern , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Shuah Khan , linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org References: <20260411013211.225834-1-jiayuan.chen@linux.dev> <20260411013211.225834-2-jiayuan.chen@linux.dev> Content-Language: en-US From: Paolo Abeni In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 4/14/26 7:50 AM, Kuniyuki Iwashima wrote: > On Fri, Apr 10, 2026 at 6:32 PM Jiayuan Chen wrote: >> >> Add read_tcpext_snmp() helper to network_helpers which reads a >> TcpExt SNMP counter via nstat, and use it in the tcp_custom_syncookie >> test to verify that LINUX_MIB_SYNCOOKIESRECV is incremented and >> LINUX_MIB_SYNCOOKIESFAILED stays unchanged across a successful >> BPF custom syncookie validation. >> >> The delta is captured between start_server() and accept(), which >> covers the full SYN/ACK/cookie-check path for one connection. >> >> Signed-off-by: Jiayuan Chen >> --- >> tools/testing/selftests/bpf/network_helpers.c | 22 +++++++++++++++++++ >> tools/testing/selftests/bpf/network_helpers.h | 1 + >> .../bpf/prog_tests/tcp_custom_syncookie.c | 20 +++++++++++++++++ > > As you touch bpf selftest helper files, please rebase on bpf-next > to avoid possible conflicts and tag bpf-next in the Subject. To hopefully minimize the conflicts handling I'm going to apply patch 1/2 to net-next. Please resubmit patch 2/2 to bpf-next after the relevant net core reach there. /P