From patchwork Thu May 27 23:54:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mat Martineau X-Patchwork-Id: 12285711 X-Patchwork-Delegate: mat@martineau.name Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) (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 DD3EB6D0E for ; Thu, 27 May 2021 23:54:40 +0000 (UTC) IronPort-SDR: zT1ci3ZVjvkOrWjI3psZpTVfJVBCJQqGaCJ20gMxBjkXkTSa18HgyPoxhjiZlskcjttrX1jw0O yT8zTKQzRYEA== X-IronPort-AV: E=McAfee;i="6200,9189,9997"; a="288450526" X-IronPort-AV: E=Sophos;i="5.83,228,1616482800"; d="scan'208";a="288450526" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 May 2021 16:54:37 -0700 IronPort-SDR: f22sfi1egaHTR6B3xTSLz1ri23qMWeVim7VBIiZgx6pbQmKxUw8k3yH9z2y2lqWDF0elGy6a7X Qkiv+2i7Bu3g== X-IronPort-AV: E=Sophos;i="5.83,228,1616482800"; d="scan'208";a="443774257" Received: from mjmartin-desk2.amr.corp.intel.com (HELO mjmartin-desk2.intel.com) ([10.209.84.136]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 May 2021 16:54:36 -0700 From: Mat Martineau To: netdev@vger.kernel.org Cc: Jianguo Wu , davem@davemloft.net, kuba@kernel.org, matthieu.baerts@tessares.net, mptcp@lists.linux.dev, Geliang Tang , Mat Martineau Subject: [PATCH net-next 5/7] mptcp: make sure flag signal is set when add addr with port Date: Thu, 27 May 2021 16:54:28 -0700 Message-Id: <20210527235430.183465-6-mathew.j.martineau@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210527235430.183465-1-mathew.j.martineau@linux.intel.com> References: <20210527235430.183465-1-mathew.j.martineau@linux.intel.com> X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jianguo Wu When add address with port, it is mean to create a listening socket, and send an ADD_ADDR to remote, so it must have flag signal set, add this check in mptcp_pm_parse_addr(). Fixes: a77e9179c7651 ("mptcp: deal with MPTCP_PM_ADDR_ATTR_PORT in PM netlink") Acked-by: Geliang Tang Reviewed-by: Matthieu Baerts Signed-off-by: Jianguo Wu Signed-off-by: Mat Martineau --- net/mptcp/pm_netlink.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 7dbc4f308dbe..09722598994d 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -971,8 +971,14 @@ static int mptcp_pm_parse_addr(struct nlattr *attr, struct genl_info *info, if (tb[MPTCP_PM_ADDR_ATTR_FLAGS]) entry->flags = nla_get_u32(tb[MPTCP_PM_ADDR_ATTR_FLAGS]); - if (tb[MPTCP_PM_ADDR_ATTR_PORT]) + if (tb[MPTCP_PM_ADDR_ATTR_PORT]) { + if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "flags must have signal when using port"); + return -EINVAL; + } entry->addr.port = htons(nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_PORT])); + } return 0; }