From patchwork Mon May 23 19:22:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Aring X-Patchwork-Id: 9132283 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 E412A6075F for ; Mon, 23 May 2016 19:23:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D88E42824E for ; Mon, 23 May 2016 19:23:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C6F8B28255; Mon, 23 May 2016 19:23:06 +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 EC9EF28252 for ; Mon, 23 May 2016 19:23:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752686AbcEWTXF (ORCPT ); Mon, 23 May 2016 15:23:05 -0400 Received: from metis.ext.4.pengutronix.de ([92.198.50.35]:48017 "EHLO metis.ext.4.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751429AbcEWTXD (ORCPT ); Mon, 23 May 2016 15:23:03 -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 1b4vRN-00022o-Ks; Mon, 23 May 2016 21:23:01 +0200 From: Alexander Aring To: linux-wpan@vger.kernel.org Cc: kernel@pengutronix.de, marcel@holtmann.org, jukka.rissanen@linux.intel.com, hannes@stressinduktion.org, stefan@osg.samsung.com, mcr@sandelman.ca, werner@almesberger.net, linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, Alexander Aring , "David S . Miller" , Alexey Kuznetsov , James Morris , Hideaki YOSHIFUJI , Patrick McHardy Subject: [RFC 05/12] ndisc: get rid off dev parameter in ndisc_opt_addr_data Date: Mon, 23 May 2016 21:22:01 +0200 Message-Id: <1464031328-17524-6-git-send-email-aar@pengutronix.de> X-Mailer: git-send-email 2.8.2 In-Reply-To: <1464031328-17524-1-git-send-email-aar@pengutronix.de> References: <1464031328-17524-1-git-send-email-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 This patch removes the net_device parameter from ndisc_opt_addr_data function. This can be useful for calling such functionality which doesn't depends on dev parameter. For current existing functionality which depends on dev parameter, we introduce ndisc_dev_opt_addr_data to have an easy replacement for the ndisc_opt_addr_data function. Cc: David S. Miller Cc: Alexey Kuznetsov Cc: James Morris Cc: Hideaki YOSHIFUJI Cc: Patrick McHardy Signed-off-by: Alexander Aring --- include/net/ndisc.h | 12 +++++++++--- net/ipv6/ndisc.c | 14 ++++++++------ net/ipv6/route.c | 4 ++-- 3 files changed, 19 insertions(+), 11 deletions(-) diff --git a/include/net/ndisc.h b/include/net/ndisc.h index dbc8d01..7fa74b0 100644 --- a/include/net/ndisc.h +++ b/include/net/ndisc.h @@ -139,16 +139,22 @@ static inline int ndisc_dev_opt_addr_space(const struct net_device *dev) } static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p, - struct net_device *dev) + unsigned char addr_len, int prepad) { u8 *lladdr = (u8 *)(p + 1); int lladdrlen = p->nd_opt_len << 3; - int prepad = ndisc_addr_option_pad(dev->type); - if (lladdrlen != ndisc_opt_addr_space(dev->addr_len, prepad)) + if (lladdrlen != ndisc_opt_addr_space(addr_len, prepad)) return NULL; return lladdr + prepad; } +static inline u8 *ndisc_dev_opt_addr_data(struct nd_opt_hdr *p, + const struct net_device *dev) +{ + return ndisc_opt_addr_data(p, dev->addr_len, + ndisc_addr_option_pad(dev->type)); +} + static inline u32 ndisc_hashfn(const void *pkey, const struct net_device *dev, __u32 *hash_rnd) { const u32 *p32 = pkey; diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 2241f06..d6f28d5 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -744,7 +744,8 @@ static void ndisc_recv_ns(struct sk_buff *skb) } if (ndopts.nd_opts_src_lladdr) { - lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr, dev); + lladdr = ndisc_dev_opt_addr_data(ndopts.nd_opts_src_lladdr, + dev); if (!lladdr) { ND_PRINTK(2, warn, "NS: invalid link-layer address length\n"); @@ -916,7 +917,8 @@ static void ndisc_recv_na(struct sk_buff *skb) return; } if (ndopts.nd_opts_tgt_lladdr) { - lladdr = ndisc_opt_addr_data(ndopts.nd_opts_tgt_lladdr, dev); + lladdr = ndisc_dev_opt_addr_data(ndopts.nd_opts_tgt_lladdr, + dev); if (!lladdr) { ND_PRINTK(2, warn, "NA: invalid link-layer address length\n"); @@ -1023,8 +1025,8 @@ static void ndisc_recv_rs(struct sk_buff *skb) } if (ndopts.nd_opts_src_lladdr) { - lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr, - skb->dev); + lladdr = ndisc_dev_opt_addr_data(ndopts.nd_opts_src_lladdr, + skb->dev); if (!lladdr) goto out; } @@ -1321,8 +1323,8 @@ skip_linkparms: if (neigh) { u8 *lladdr = NULL; if (ndopts.nd_opts_src_lladdr) { - lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr, - skb->dev); + lladdr = ndisc_dev_opt_addr_data(ndopts.nd_opts_src_lladdr, + skb->dev); if (!lladdr) { ND_PRINTK(2, warn, "RA: invalid link-layer address length\n"); diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 969913d..d662cd8 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2207,8 +2207,8 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu lladdr = NULL; if (ndopts.nd_opts_tgt_lladdr) { - lladdr = ndisc_opt_addr_data(ndopts.nd_opts_tgt_lladdr, - skb->dev); + lladdr = ndisc_dev_opt_addr_data(ndopts.nd_opts_tgt_lladdr, + skb->dev); if (!lladdr) { net_dbg_ratelimited("rt6_redirect: invalid link-layer address length\n"); return;