From patchwork Mon Nov 12 07:52:33 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amerigo Wang X-Patchwork-Id: 198324 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 0759F2C0082 for ; Mon, 12 Nov 2012 18:52:57 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751370Ab2KLHwz (ORCPT ); Mon, 12 Nov 2012 02:52:55 -0500 Received: from mx1.redhat.com ([209.132.183.28]:61672 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751283Ab2KLHwy (ORCPT ); Mon, 12 Nov 2012 02:52:54 -0500 Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id qAC7qqTa002065 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 12 Nov 2012 02:52:52 -0500 Received: from cr0.redhat.com (vpn-247-47.nrt.redhat.com [10.64.247.47]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id qAC7qlF3016621; Mon, 12 Nov 2012 02:52:48 -0500 From: Cong Wang To: netdev@vger.kernel.org Cc: Cong Wang , "David S. Miller" Subject: [PATCH net-next 1/2] net: convert __IPTUNNEL_XMIT() to an inline function Date: Mon, 12 Nov 2012 15:52:33 +0800 Message-Id: <1352706754-16594-1-git-send-email-amwang@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.25 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org __IPTUNNEL_XMIT() is an ugly macro, convert it to a static inline function, so make it more readable. IPTUNNEL_XMIT() is unused, just remove it. Cc: David S. Miller Signed-off-by: Cong Wang --- drivers/net/vxlan.c | 2 +- include/linux/if_tunnel.h | 10 ++++++++++ include/net/ipip.h | 40 +++++++++++++++++++++------------------- net/ipv4/ip_gre.c | 14 +------------- net/ipv4/ip_vti.c | 9 --------- net/ipv4/ipip.c | 14 +------------- net/ipv6/ip6_gre.c | 9 --------- net/ipv6/ip6_tunnel.c | 8 -------- net/ipv6/sit.c | 14 +------------- 9 files changed, 35 insertions(+), 85 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 8aca888..9814d67 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -769,7 +769,7 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev) vxlan_set_owner(dev, skb); - /* See __IPTUNNEL_XMIT */ + /* See iptunnel_xmit() */ skb->ip_summed = CHECKSUM_NONE; ip_select_ident(iph, &rt->dst, NULL); diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h index 1cc595a..06d1d5b 100644 --- a/include/linux/if_tunnel.h +++ b/include/linux/if_tunnel.h @@ -4,5 +4,15 @@ #include #include #include +#include + +/* often modified stats are per cpu, other are shared (netdev->stats) */ +struct pcpu_tstats { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; +}; #endif /* _IF_TUNNEL_H_ */ diff --git a/include/net/ipip.h b/include/net/ipip.h index ddc077c..21947cf 100644 --- a/include/net/ipip.h +++ b/include/net/ipip.h @@ -48,25 +48,27 @@ struct ip_tunnel_prl_entry { struct rcu_head rcu_head; }; -#define __IPTUNNEL_XMIT(stats1, stats2) do { \ - int err; \ - int pkt_len = skb->len - skb_transport_offset(skb); \ - \ - skb->ip_summed = CHECKSUM_NONE; \ - ip_select_ident(iph, &rt->dst, NULL); \ - \ - err = ip_local_out(skb); \ - if (likely(net_xmit_eval(err) == 0)) { \ - u64_stats_update_begin(&(stats1)->syncp); \ - (stats1)->tx_bytes += pkt_len; \ - (stats1)->tx_packets++; \ - u64_stats_update_end(&(stats1)->syncp); \ - } else { \ - (stats2)->tx_errors++; \ - (stats2)->tx_aborted_errors++; \ - } \ -} while (0) +static inline void iptunnel_xmit(struct sk_buff *skb, struct net_device *dev) +{ + int err; + struct iphdr *iph = ip_hdr(skb); + int pkt_len = skb->len - skb_transport_offset(skb); + struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats); -#define IPTUNNEL_XMIT() __IPTUNNEL_XMIT(txq, stats) + nf_reset(skb); + skb->ip_summed = CHECKSUM_NONE; + ip_select_ident(iph, skb_dst(skb), NULL); + + err = ip_local_out(skb); + if (likely(net_xmit_eval(err) == 0)) { + u64_stats_update_begin(&tstats->syncp); + tstats->tx_bytes += pkt_len; + tstats->tx_packets++; + u64_stats_update_end(&tstats->syncp); + } else { + dev->stats.tx_errors++; + dev->stats.tx_aborted_errors++; + } +} #endif diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 7240f8e..37000ae 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -171,15 +171,6 @@ struct ipgre_net { #define for_each_ip_tunnel_rcu(start) \ for (t = rcu_dereference(start); t; t = rcu_dereference(t->next)) -/* often modified stats are per cpu, other are shared (netdev->stats) */ -struct pcpu_tstats { - u64 rx_packets; - u64 rx_bytes; - u64 tx_packets; - u64 tx_bytes; - struct u64_stats_sync syncp; -}; - static struct rtnl_link_stats64 *ipgre_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *tot) { @@ -753,7 +744,6 @@ drop: static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) { struct ip_tunnel *tunnel = netdev_priv(dev); - struct pcpu_tstats *tstats; const struct iphdr *old_iph = ip_hdr(skb); const struct iphdr *tiph; struct flowi4 fl4; @@ -977,9 +967,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev } } - nf_reset(skb); - tstats = this_cpu_ptr(dev->tstats); - __IPTUNNEL_XMIT(tstats, &dev->stats); + iptunnel_xmit(skb, dev); return NETDEV_TX_OK; #if IS_ENABLED(CONFIG_IPV6) diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c index 1831092..e0f2c88 100644 --- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -71,15 +71,6 @@ static int vti_tunnel_bind_dev(struct net_device *dev); #define for_each_ip_tunnel_rcu(start) \ for (t = rcu_dereference(start); t; t = rcu_dereference(t->next)) -/* often modified stats are per cpu, other are shared (netdev->stats) */ -struct pcpu_tstats { - u64 rx_packets; - u64 rx_bytes; - u64 tx_packets; - u64 tx_bytes; - struct u64_stats_sync syncp; -}; - #define VTI_XMIT(stats1, stats2) do { \ int err; \ int pkt_len = skb->len; \ diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index 720855e..3a4ad7d 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -147,15 +147,6 @@ static struct rtnl_link_ops ipip_link_ops __read_mostly; #define for_each_ip_tunnel_rcu(start) \ for (t = rcu_dereference(start); t; t = rcu_dereference(t->next)) -/* often modified stats are per cpu, other are shared (netdev->stats) */ -struct pcpu_tstats { - u64 rx_packets; - u64 rx_bytes; - u64 tx_packets; - u64 tx_bytes; - struct u64_stats_sync syncp; -}; - static struct rtnl_link_stats64 *ipip_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *tot) { @@ -465,7 +456,6 @@ drop: static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) { struct ip_tunnel *tunnel = netdev_priv(dev); - struct pcpu_tstats *tstats; const struct iphdr *tiph = &tunnel->parms.iph; u8 tos = tunnel->parms.iph.tos; __be16 df = tiph->frag_off; @@ -592,9 +582,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) if ((iph->ttl = tiph->ttl) == 0) iph->ttl = old_iph->ttl; - nf_reset(skb); - tstats = this_cpu_ptr(dev->tstats); - __IPTUNNEL_XMIT(tstats, &dev->stats); + iptunnel_xmit(skb, dev); return NETDEV_TX_OK; tx_error_icmp: diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 12aa473..672101d 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -116,15 +116,6 @@ static u32 HASH_ADDR(const struct in6_addr *addr) #define for_each_ip_tunnel_rcu(start) \ for (t = rcu_dereference(start); t; t = rcu_dereference(t->next)) -/* often modified stats are per cpu, other are shared (netdev->stats) */ -struct pcpu_tstats { - u64 rx_packets; - u64 rx_bytes; - u64 tx_packets; - u64 tx_bytes; - struct u64_stats_sync syncp; -}; - static struct rtnl_link_stats64 *ip6gre_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *tot) { diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 424ed45..8db4d9b 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -95,14 +95,6 @@ struct ip6_tnl_net { struct ip6_tnl __rcu **tnls[2]; }; -/* often modified stats are per cpu, other are shared (netdev->stats) */ -struct pcpu_tstats { - unsigned long rx_packets; - unsigned long rx_bytes; - unsigned long tx_packets; - unsigned long tx_bytes; -} __attribute__((aligned(4*sizeof(unsigned long)))); - static struct net_device_stats *ip6_get_stats(struct net_device *dev) { struct pcpu_tstats sum = { 0 }; diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index b543c56..ffe83ef 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -88,15 +88,6 @@ struct sit_net { #define for_each_ip_tunnel_rcu(start) \ for (t = rcu_dereference(start); t; t = rcu_dereference(t->next)) -/* often modified stats are per cpu, other are shared (netdev->stats) */ -struct pcpu_tstats { - u64 rx_packets; - u64 rx_bytes; - u64 tx_packets; - u64 tx_bytes; - struct u64_stats_sync syncp; -}; - static struct rtnl_link_stats64 *ipip6_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *tot) { @@ -685,7 +676,6 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) { struct ip_tunnel *tunnel = netdev_priv(dev); - struct pcpu_tstats *tstats; const struct iphdr *tiph = &tunnel->parms.iph; const struct ipv6hdr *iph6 = ipv6_hdr(skb); u8 tos = tunnel->parms.iph.tos; @@ -866,9 +856,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, if ((iph->ttl = tiph->ttl) == 0) iph->ttl = iph6->hop_limit; - nf_reset(skb); - tstats = this_cpu_ptr(dev->tstats); - __IPTUNNEL_XMIT(tstats, &dev->stats); + iptunnel_xmit(skb, dev); return NETDEV_TX_OK; tx_error_icmp: