From patchwork Mon Aug 22 14:38:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amir Vadai X-Patchwork-Id: 661493 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3sHx660fSdz9t0t for ; Tue, 23 Aug 2016 00:39:10 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756036AbcHVOjG (ORCPT ); Mon, 22 Aug 2016 10:39:06 -0400 Received: from mail-wm0-f68.google.com ([74.125.82.68]:35393 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755383AbcHVOjF (ORCPT ); Mon, 22 Aug 2016 10:39:05 -0400 Received: by mail-wm0-f68.google.com with SMTP id i5so13814857wmg.2 for ; Mon, 22 Aug 2016 07:38:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=v8oNLlVMkchjxbeKMgdsKJH7oynjsfqaVmFx53wbDVg=; b=ZJjx0/SIwFV0kRJ/EogShh/smCUSOhTZZF/3A1A0BOOAvGkctcxu0ZQMkpcO+xueZp uc2Sf5LCwfM3/NCYZRX1+FZC7XW/RrtI6kFIuH8Rp2pX1iNgelSUykF4TD4MbNWXzicN UvGKlsox0fAEi1extQuhxC8UbKSyojCNpH+XvtCtlPWkaCZwQL0T2qNQM55Vuy5x1eSJ oBwkuiDNcYzzylgOxYk2GIjKajfvxbg/ul53Q155v9A7Rww1fsh6wDYz9HU3JeuAJstB ILBn8uoGAPWqvUYMxKNt3NzlJFNAurknPGTmpnGZuNnPzVjKvBT4evA2foKbsSfebVWy QU5Q== X-Gm-Message-State: AEkoouvnqTJ1358PEHjbaBDYHE/bO/Rpa9Ir/wF3V87eQ3iIHq62yy3v3Lpn43/TKdufCA== X-Received: by 10.28.13.143 with SMTP id 137mr16204459wmn.46.1471876737261; Mon, 22 Aug 2016 07:38:57 -0700 (PDT) Received: from office.vadai.me (212.116.172.4.static.012.net.il. [212.116.172.4]) by smtp.gmail.com with ESMTPSA id q139sm21809682wmb.18.2016.08.22.07.38.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 22 Aug 2016 07:38:56 -0700 (PDT) From: Amir Vadai To: "David S. Miller" Cc: netdev@vger.kernel.org, John Fastabend , Jiri Pirko , Cong Wang , Jamal Hadi Salim , Or Gerlitz , Hadar Har-Zion , Amir Vadai Subject: [PATCH net-next 1/3] net/ip_tunnels: Introduce tunnel_id_to_key32() and key32_to_tunnel_id() Date: Mon, 22 Aug 2016 17:38:32 +0300 Message-Id: <20160822143834.32422-2-amir@vadai.me> X-Mailer: git-send-email 2.9.0 In-Reply-To: <20160822143834.32422-1-amir@vadai.me> References: <20160822143834.32422-1-amir@vadai.me> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add utility functions to convert a 32 bits key into a 64 bits tunnel and vice versa. These functions will be used instead of cloning code in GRE and VXLAN, and in tc act_iptunnel which will be introduced in a following patch in this patchset. Signed-off-by: Amir Vadai --- drivers/net/vxlan.c | 4 ++-- include/net/ip_tunnels.h | 19 +++++++++++++++++++ include/net/vxlan.h | 18 ------------------ net/ipv4/ip_gre.c | 23 ++--------------------- 4 files changed, 23 insertions(+), 41 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index c0dda6fc0921..b1ddf8f756d4 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1294,7 +1294,7 @@ static int vxlan_rcv(struct sock *sk, struct sk_buff *skb) struct metadata_dst *tun_dst; tun_dst = udp_tun_rx_dst(skb, vxlan_get_sk_family(vs), TUNNEL_KEY, - vxlan_vni_to_tun_id(vni), sizeof(*md)); + key32_to_tunnel_id(vni), sizeof(*md)); if (!tun_dst) goto drop; @@ -1948,7 +1948,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, goto drop; } dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port; - vni = vxlan_tun_id_to_vni(info->key.tun_id); + vni = tunnel_id_to_key32(info->key.tun_id); remote_ip.sa.sa_family = ip_tunnel_info_af(info); if (remote_ip.sa.sa_family == AF_INET) { remote_ip.sin.sin_addr.s_addr = info->key.u.ipv4.dst; diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h index a5e7035fb93f..d8afe4400373 100644 --- a/include/net/ip_tunnels.h +++ b/include/net/ip_tunnels.h @@ -222,6 +222,25 @@ static inline unsigned short ip_tunnel_info_af(const struct ip_tunnel_info return tun_info->mode & IP_TUNNEL_INFO_IPV6 ? AF_INET6 : AF_INET; } +static inline __be64 key32_to_tunnel_id(__be32 key) +{ +#ifdef __BIG_ENDIAN + return (__force __be64)((__force u32)key); +#else + return (__force __be64)((__force u64)key << 32); +#endif +} + +/* Returns the least-significant 32 bits of a __be64. */ +static inline __be32 tunnel_id_to_key32(__be64 x) +{ +#ifdef __BIG_ENDIAN + return (__force __be32)x; +#else + return (__force __be32)((__force u64)x >> 32); +#endif +} + #ifdef CONFIG_INET int ip_tunnel_init(struct net_device *dev); diff --git a/include/net/vxlan.h b/include/net/vxlan.h index b96d0360c095..0255613a54a4 100644 --- a/include/net/vxlan.h +++ b/include/net/vxlan.h @@ -350,24 +350,6 @@ static inline __be32 vxlan_vni_field(__be32 vni) #endif } -static inline __be32 vxlan_tun_id_to_vni(__be64 tun_id) -{ -#if defined(__BIG_ENDIAN) - return (__force __be32)tun_id; -#else - return (__force __be32)((__force u64)tun_id >> 32); -#endif -} - -static inline __be64 vxlan_vni_to_tun_id(__be32 vni) -{ -#if defined(__BIG_ENDIAN) - return (__force __be64)vni; -#else - return (__force __be64)((u64)(__force u32)vni << 32); -#endif -} - static inline size_t vxlan_rco_start(__be32 vni_field) { return be32_to_cpu(vni_field & VXLAN_RCO_MASK) << VXLAN_RCO_SHIFT; diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 113cc43df789..576f705d8180 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -246,25 +246,6 @@ static void gre_err(struct sk_buff *skb, u32 info) ipgre_err(skb, info, &tpi); } -static __be64 key_to_tunnel_id(__be32 key) -{ -#ifdef __BIG_ENDIAN - return (__force __be64)((__force u32)key); -#else - return (__force __be64)((__force u64)key << 32); -#endif -} - -/* Returns the least-significant 32 bits of a __be64. */ -static __be32 tunnel_id_to_key(__be64 x) -{ -#ifdef __BIG_ENDIAN - return (__force __be32)x; -#else - return (__force __be32)((__force u64)x >> 32); -#endif -} - static int __ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi, struct ip_tunnel_net *itn, int hdr_len, bool raw_proto) { @@ -290,7 +271,7 @@ static int __ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi, __be64 tun_id; flags = tpi->flags & (TUNNEL_CSUM | TUNNEL_KEY); - tun_id = key_to_tunnel_id(tpi->key); + tun_id = key32_to_tunnel_id(tpi->key); tun_dst = ip_tun_rx_dst(skb, flags, tun_id, 0); if (!tun_dst) return PACKET_REJECT; @@ -446,7 +427,7 @@ static void gre_fb_xmit(struct sk_buff *skb, struct net_device *dev, flags = tun_info->key.tun_flags & (TUNNEL_CSUM | TUNNEL_KEY); gre_build_header(skb, tunnel_hlen, flags, proto, - tunnel_id_to_key(tun_info->key.tun_id), 0); + tunnel_id_to_key32(tun_info->key.tun_id), 0); df = key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0;