From patchwork Wed Sep 14 12:37:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Simon Wunderlich X-Patchwork-Id: 16688 Return-Path: X-Original-To: patchwork@open-mesh.org Delivered-To: patchwork@open-mesh.org Received: from open-mesh.org (localhost [IPv6:::1]) by open-mesh.org (Postfix) with ESMTP id 6A5D882F18; Wed, 14 Sep 2016 14:38:02 +0200 (CEST) Authentication-Results: open-mesh.org; dmarc=none header.from=simonwunderlich.de Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=79.140.42.25; helo=mail.mail.packetmixer.de; envelope-from=sw@simonwunderlich.de; receiver=b.a.t.m.a.n@lists.open-mesh.org Authentication-Results: open-mesh.org; dmarc=none header.from=simonwunderlich.de Received: from mail.mail.packetmixer.de (packetmixer.de [79.140.42.25]) by open-mesh.org (Postfix) with ESMTPS id 1B77582EE9 for ; Wed, 14 Sep 2016 14:37:46 +0200 (CEST) Received: from kero.packetmixer.de (p2003007C6F769E00527B9DFFFECE2EDC.dip0.t-ipconnect.de [IPv6:2003:7c:6f76:9e00:527b:9dff:fece:2edc]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mail.packetmixer.de (Postfix) with ESMTPSA id 9E8621F0026; Wed, 14 Sep 2016 14:37:46 +0200 (CEST) From: Simon Wunderlich To: davem@davemloft.net Date: Wed, 14 Sep 2016 14:37:35 +0200 Message-Id: <20160914123735.9411-3-sw@simonwunderlich.de> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20160914123735.9411-1-sw@simonwunderlich.de> References: <20160914123735.9411-1-sw@simonwunderlich.de> MIME-Version: 1.0 Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org, Marek Lindner Subject: [B.A.T.M.A.N.] [PATCH 2/2] batman-adv: fix elp packet data reservation X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: The list for a Better Approach To Mobile Ad-hoc Networking Errors-To: b.a.t.m.a.n-bounces@lists.open-mesh.org Sender: "B.A.T.M.A.N" From: Linus Lüssing The skb_reserve() call only reserved headroom for the mac header, but not the elp packet header itself. Fixing this by using skb_put()'ing towards the skb tail instead of skb_push()'ing towards the skb head. Fixes: d6f94d91f766 ("batman-adv: ELP - adding basic infrastructure") Signed-off-by: Linus Lüssing Signed-off-by: Marek Lindner Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- net/batman-adv/bat_v_elp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index 7d17001..ee08540 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -335,7 +335,7 @@ int batadv_v_elp_iface_enable(struct batadv_hard_iface *hard_iface) goto out; skb_reserve(hard_iface->bat_v.elp_skb, ETH_HLEN + NET_IP_ALIGN); - elp_buff = skb_push(hard_iface->bat_v.elp_skb, BATADV_ELP_HLEN); + elp_buff = skb_put(hard_iface->bat_v.elp_skb, BATADV_ELP_HLEN); elp_packet = (struct batadv_elp_packet *)elp_buff; memset(elp_packet, 0, BATADV_ELP_HLEN);