From patchwork Sun Aug 7 14:30:51 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Aring X-Patchwork-Id: 9266377 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3631E6089F for ; Sun, 7 Aug 2016 14:33:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2824D26C2F for ; Sun, 7 Aug 2016 14:33:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1D15D27E5A; Sun, 7 Aug 2016 14:33:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C1ACA26C9B for ; Sun, 7 Aug 2016 14:33:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752051AbcHGOdR (ORCPT ); Sun, 7 Aug 2016 10:33:17 -0400 Received: from metis.ext.4.pengutronix.de ([92.198.50.35]:33685 "EHLO metis.ext.4.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752047AbcHGOdF (ORCPT ); Sun, 7 Aug 2016 10:33:05 -0400 Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=omega.localdomain) by metis.ext.pengutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1bWP8R-0001Um-IZ; Sun, 07 Aug 2016 16:33:03 +0200 From: Alexander Aring To: linux-wpan@vger.kernel.org Cc: kernel@pengutronix.de, linux-bluetooth@vger.kernel.org, Alexander Aring Subject: [RFCv2 bluetooth-next 14/19] 6lowpan: iphc: override l2 packet information Date: Sun, 7 Aug 2016 16:30:51 +0200 Message-Id: <20160807143056.3116-15-aar@pengutronix.de> X-Mailer: git-send-email 2.9.2 In-Reply-To: <20160807143056.3116-1-aar@pengutronix.de> References: <20160807143056.3116-1-aar@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: aar@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-wpan@vger.kernel.org Sender: linux-wpan-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wpan@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The skb->pkt_type need to be set by L2, but on 6LoWPAN there exists L2 e.g. BTLE which doesn't has multicast addressing. If it's a multicast or not is detected by IPHC headers multicast bit. The IPv6 layer will evaluate this pkt_type, so we force set this type while uncompressing. Should be okay for 802.15.4 as well. Signed-off-by: Alexander Aring --- net/6lowpan/iphc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c index 79f1fa2..fb5f6fa 100644 --- a/net/6lowpan/iphc.c +++ b/net/6lowpan/iphc.c @@ -666,6 +666,8 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev, switch (iphc1 & (LOWPAN_IPHC_M | LOWPAN_IPHC_DAC)) { case LOWPAN_IPHC_M | LOWPAN_IPHC_DAC: + skb->pkt_type = PACKET_BROADCAST; + spin_lock_bh(&lowpan_dev(dev)->ctx.lock); ci = lowpan_iphc_ctx_get_by_id(dev, LOWPAN_IPHC_CID_DCI(cid)); if (!ci) { @@ -681,11 +683,15 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev, spin_unlock_bh(&lowpan_dev(dev)->ctx.lock); break; case LOWPAN_IPHC_M: + skb->pkt_type = PACKET_BROADCAST; + /* multicast */ err = lowpan_uncompress_multicast_daddr(skb, &hdr.daddr, iphc1 & LOWPAN_IPHC_DAM_MASK); break; case LOWPAN_IPHC_DAC: + skb->pkt_type = PACKET_HOST; + spin_lock_bh(&lowpan_dev(dev)->ctx.lock); ci = lowpan_iphc_ctx_get_by_id(dev, LOWPAN_IPHC_CID_DCI(cid)); if (!ci) { @@ -701,6 +707,8 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev, spin_unlock_bh(&lowpan_dev(dev)->ctx.lock); break; default: + skb->pkt_type = PACKET_HOST; + err = lowpan_iphc_uncompress_addr(skb, dev, &hdr.daddr, iphc1 & LOWPAN_IPHC_DAM_MASK, daddr);