From mboxrd@z Thu Jan 1 00:00:00 1970 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 CBFE2355043; Tue, 6 Jan 2026 17:25:44 +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=1767720344; cv=none; b=eklexGKAe254tugTimm+qdbkwV8exWLDh34DteSC0BjLDjctd2CJToJeTnYrp24rRfl6PWN3hMLYPd2xBbTNlGnxF+rKTv+0jNdpXQnO9zwqsGvXUEE4MWie2rEUHeikkpEs0qpyVlvxmQMBZUuibktcieFqNyWoVd/bwuQctBY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767720344; c=relaxed/simple; bh=64u+BPaoLYLPFTt04NNlwkgGBY+zyCEGB7wxRq2jHWU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pCejHBNT5kHY2Ktu1dmo3u0RGdfzl2zjhvHS5iuD+qAx7I0tcCbvETVMC7V1q1o595wLyqwjIO8od9mb+qBxpC7Ry2BzZBIXsPgXdo891NWbJUnCb3hTRVHMiYX+0zwNImoWD6pVGYNs1MfylNyI6q7db/HHG9ocdEsAi8XA+To= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=inhHJm+h; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="inhHJm+h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3AA79C116C6; Tue, 6 Jan 2026 17:25:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767720344; bh=64u+BPaoLYLPFTt04NNlwkgGBY+zyCEGB7wxRq2jHWU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=inhHJm+hzQOlfpRfl+HZdx5epMBsekN8sv/qQmUSRumX0EgXhWJ3QZgWrOVwlRJ52 PAE6I/YPU2QrhQ+/dulU59fAUcymlk2GRFV/c/+MfrO+7eNQnj/MhCjQt08KBiVZTB oPh9Hh+o2muu0vkW9Hvxt9zva+MMfUgLUSZJJRb8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mat Martineau , "Matthieu Baerts (NGI0)" , Jakub Kicinski Subject: [PATCH 6.12 175/567] selftests: mptcp: pm: ensure unknown flags are ignored Date: Tue, 6 Jan 2026 17:59:17 +0100 Message-ID: <20260106170457.799707189@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260106170451.332875001@linuxfoundation.org> References: <20260106170451.332875001@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Matthieu Baerts (NGI0) commit 29f4801e9c8dfd12bdcb33b61a6ac479c7162bd7 upstream. This validates the previous commit: the userspace can set unknown flags -- the 7th bit is currently unused -- without errors, but only the supported ones are printed in the endpoints dumps. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 01cacb00b35c ("mptcp: add netlink-based PM") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20251205-net-mptcp-misc-fixes-6-19-rc1-v1-2-9e4781a6c1b8@kernel.org Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/net/mptcp/pm_netlink.sh | 4 ++++ tools/testing/selftests/net/mptcp/pm_nl_ctl.c | 11 +++++++++++ 2 files changed, 15 insertions(+) --- a/tools/testing/selftests/net/mptcp/pm_netlink.sh +++ b/tools/testing/selftests/net/mptcp/pm_netlink.sh @@ -191,6 +191,10 @@ check "show_endpoints" \ flush_endpoint check "show_endpoints" "" "flush addrs" +add_endpoint 10.0.1.1 flags unknown +check "show_endpoints" "$(format_endpoints "1,10.0.1.1")" "ignore unknown flags" +flush_endpoint + set_limits 9 1 2>/dev/null check "get_limits" "${default_limits}" "rcv addrs above hard limit" --- a/tools/testing/selftests/net/mptcp/pm_nl_ctl.c +++ b/tools/testing/selftests/net/mptcp/pm_nl_ctl.c @@ -23,6 +23,8 @@ #define IPPROTO_MPTCP 262 #endif +#define MPTCP_PM_ADDR_FLAG_UNKNOWN _BITUL(7) + static void syntax(char *argv[]) { fprintf(stderr, "%s add|ann|rem|csf|dsf|get|set|del|flush|dump|events|listen|accept []\n", argv[0]); @@ -827,6 +829,8 @@ int add_addr(int fd, int pm_family, int flags |= MPTCP_PM_ADDR_FLAG_BACKUP; else if (!strcmp(tok, "fullmesh")) flags |= MPTCP_PM_ADDR_FLAG_FULLMESH; + else if (!strcmp(tok, "unknown")) + flags |= MPTCP_PM_ADDR_FLAG_UNKNOWN; else error(1, errno, "unknown flag %s", argv[arg]); @@ -1031,6 +1035,13 @@ static void print_addr(struct rtattr *at if (flags) printf(","); } + + if (flags & MPTCP_PM_ADDR_FLAG_UNKNOWN) { + printf("unknown"); + flags &= ~MPTCP_PM_ADDR_FLAG_UNKNOWN; + if (flags) + printf(","); + } /* bump unknown flags, if any */ if (flags)