From patchwork Wed Jun 17 08:26:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Theil X-Patchwork-Id: 11609409 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B840C60D for ; Wed, 17 Jun 2020 08:27:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A1A4B2085B for ; Wed, 17 Jun 2020 08:27:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726629AbgFQI1G (ORCPT ); Wed, 17 Jun 2020 04:27:06 -0400 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:49905 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726025AbgFQI1F (ORCPT ); Wed, 17 Jun 2020 04:27:05 -0400 Received: from legolas.fritz.box (unknown [87.147.49.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id 257AF580073; Wed, 17 Jun 2020 10:27:03 +0200 (CEST) From: Markus Theil To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Markus Theil Subject: [PATCH v3 1/2] mac80211: skip mpath lookup also for control port tx Date: Wed, 17 Jun 2020 10:26:36 +0200 Message-Id: <20200617082637.22670-2-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200617082637.22670-1-markus.theil@tu-ilmenau.de> References: <20200617082637.22670-1-markus.theil@tu-ilmenau.de> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org When using 802.1X over mesh networks, at first an ordinary mesh peering is established, then the 802.1X EAPOL dialog happens, afterwards an authenticated mesh peering exchange (AMPE) happens, finally the peering is complete and we can set the STA authorized flag. As 802.1X is an intermediate step here and key material is not yet exchanged for stations we have to skip mesh path lookup for these EAPOL frames. Otherwise the already configure mesh group encryption key would be used to send a mesh path request which no one can decipher, because we didn't already establish key material on both peers, like with SAE and directly using AMPE. Signed-off-by: Markus Theil --- net/mac80211/tx.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index e9ce658141f5..bd86f85a5b73 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -3933,6 +3933,7 @@ void __ieee80211_subif_start_xmit(struct sk_buff *skb, struct ieee80211_local *local = sdata->local; struct sta_info *sta; struct sk_buff *next; + u32 ctrl_flags_adapted; if (unlikely(skb->len < ETH_HLEN)) { kfree_skb(skb); @@ -3996,8 +3997,12 @@ void __ieee80211_subif_start_xmit(struct sk_buff *skb, skb_list_walk_safe(skb, skb, next) { skb_mark_not_on_list(skb); + ctrl_flags_adapted = ctrl_flags; + if (sdata->control_port_protocol == skb->protocol) + ctrl_flags_adapted |= IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP; + skb = ieee80211_build_hdr(sdata, skb, info_flags, - sta, ctrl_flags, cookie); + sta, ctrl_flags_adapted, cookie); if (IS_ERR(skb)) { kfree_skb_list(next); goto out; @@ -5370,8 +5375,10 @@ int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, proto != cpu_to_be16(ETH_P_PREAUTH)) return -EINVAL; - if (proto == sdata->control_port_protocol) - ctrl_flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO; + if (proto == sdata->control_port_protocol) { + ctrl_flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO | + IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP; + } if (unencrypted) flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;