From nobody Fri Oct 18 10:22:05 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 27E263D551 for ; Wed, 15 May 2024 06:44:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715755474; cv=none; b=B7e8pItlU6nOEEmX5TPFwKzvsD7P+CmvSLpD715LErdqbalqchwsdWMFlkIIb/g9s5NbmGCc0apYxB4puhBRCbnPjM+JbYBzYjs8V4hWX1mwN2bPmuuncEc6k60c3OgBILIBxvO5wWsxjjFtxuuqcvO32fvzndK56dlJ9GPChcY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715755474; c=relaxed/simple; bh=fwioNH5HhE48LN7rMrbpuKVb52W01ZEVcJdkcOLSq/o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Pu65CndtvTFoL74cyo1cNdFF7J9t+IZSLmkhQBInDKXnOgRdcgdcSTopnp1hMONNwBXD7aRv2UbbMIGpjr++S2V7U4Hv4BnVQnp2reAOeI10PvZvxi5qxKoa2bhYkYjstvd1vjT5YwdY3ZzojYN4UzVmjYkcuyWUe1WAqkBv2HY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ev85alCK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Ev85alCK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C1EFC2BD11; Wed, 15 May 2024 06:44:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715755473; bh=fwioNH5HhE48LN7rMrbpuKVb52W01ZEVcJdkcOLSq/o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ev85alCKPS+K1RCVuI+JmDIF0Dij/toy54hdToNlupC2btL2+0HUecMuDocu3VQIC fq9nn2brExmg7WJ31TbXuRDpVRw3lNESDqlaV0oo1Cotjvh+5aEfk5hrLSWa7sSZiC kaClLlTPoMdwfdxTVRBAVNUxHGUKealum9YxemlwYXC4uEovichCElWeJFXvJXu9DY FQwB/pq2zihiTMyXVzVB1sxQChUFBbcFmaGurAvr7tkoKGcRj7cSjX+Pyq8fyJNIdi l8y2L+6DBA//EMXhEh0OyuSTU06XvbCWi3vSGQMlQQ5O0jbCGOZUxuuR3Yga4GodO2 Ri6h/dxyUGciA== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next 1/3] selftests/bpf: Handle SIGINT when creating netns Date: Wed, 15 May 2024 14:44:21 +0800 Message-ID: <8c4198e7855045559ab746be7d90f72fd550a857.1715755275.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Geliang Tang It's necessary to delete netns during BPF selftests interrupt, otherwise the next tests run will fail due to unable to create netns. This patch adds a new SIGINT handle netns_sig_handler() in create_netns(), and deletes NS_TEST in this handler. For passing argument to signal handler, a trick mentioned in [1] is used. [1] https://stackoverflow.com/questions/6970224/providing-passing-argument-to-s= ignal-handler Signed-off-by: Geliang Tang --- tools/testing/selftests/bpf/network_helpers.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/= selftests/bpf/network_helpers.c index 0b25b008f4f6..7e233b8c75d9 100644 --- a/tools/testing/selftests/bpf/network_helpers.c +++ b/tools/testing/selftests/bpf/network_helpers.c @@ -519,6 +519,16 @@ void cleanup_netns(struct nstoken *token) close_netns(token); } =20 +static int netns_sig_handler(const int sig, void *ptr) +{ + struct nstoken *token =3D (struct nstoken *)ptr; + + signal(sig, SIG_IGN); + if (sig =3D=3D SIGINT) + cleanup_netns(token); + return 0; +} + struct nstoken *create_netns(const char *name) { struct nstoken *token =3D NULL; @@ -539,6 +549,8 @@ struct nstoken *create_netns(const char *name) goto fail; } =20 + signal(SIGINT, (__sighandler_t)netns_sig_handler); + netns_sig_handler(SIGUSR1, (void *)token); return token; =20 fail: --=20 2.43.0