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net: unify for_each_ip_tunnel_rcu()

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The defitions of for_each_ip_tunnel_rcu() are same,
so unify it. Also, don't hide the parameter 't'.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amerigo Wang 2012-11-11 21:52:34 +00:00 committed by David S. Miller
parent aa0010f880
commit e086cadc08
6 changed files with 25 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
include/linux/if_tunnel.h
View File

@ -6,6 +6,13 @@
#include <uapi/linux/if_tunnel.h>
#include <linux/u64_stats_sync.h>
/*
* Locking : hash tables are protected by RCU and RTNL
*/
#define for_each_ip_tunnel_rcu(pos, start) \
for (pos = rcu_dereference(start); pos; pos = rcu_dereference(pos->next))
/* often modified stats are per cpu, other are shared (netdev->stats) */
struct pcpu_tstats {
u64 rx_packets;

14
net/ipv4/ip_gre.c
View File

@ -164,12 +164,6 @@ struct ipgre_net {
#define tunnels_r tunnels[2]
#define tunnels_l tunnels[1]
#define tunnels_wc tunnels[0]
/*
* Locking : hash tables are protected by RCU and RTNL
*/
#define for_each_ip_tunnel_rcu(start) \
for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))
static struct rtnl_link_stats64 *ipgre_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *tot)
@ -241,7 +235,7 @@ static struct ip_tunnel *ipgre_tunnel_lookup(struct net_device *dev,
ARPHRD_ETHER : ARPHRD_IPGRE;
int score, cand_score = 4;
for_each_ip_tunnel_rcu(ign->tunnels_r_l[h0 ^ h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_r_l[h0 ^ h1]) {
if (local != t->parms.iph.saddr ||
remote != t->parms.iph.daddr ||
!(t->dev->flags & IFF_UP))
@ -268,7 +262,7 @@ static struct ip_tunnel *ipgre_tunnel_lookup(struct net_device *dev,
}
}
for_each_ip_tunnel_rcu(ign->tunnels_r[h0 ^ h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_r[h0 ^ h1]) {
if (remote != t->parms.iph.daddr ||
!(t->dev->flags & IFF_UP))
continue;
@ -294,7 +288,7 @@ static struct ip_tunnel *ipgre_tunnel_lookup(struct net_device *dev,
}
}
for_each_ip_tunnel_rcu(ign->tunnels_l[h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_l[h1]) {
if ((local != t->parms.iph.saddr &&
(local != t->parms.iph.daddr ||
!ipv4_is_multicast(local))) ||
@ -322,7 +316,7 @@ static struct ip_tunnel *ipgre_tunnel_lookup(struct net_device *dev,
}
}
for_each_ip_tunnel_rcu(ign->tunnels_wc[h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_wc[h1]) {
if (t->parms.i_key != key ||
!(t->dev->flags & IFF_UP))
continue;

13
net/ipv4/ip_vti.c
View File

@ -66,11 +66,6 @@ static void vti_tunnel_setup(struct net_device *dev);
static void vti_dev_free(struct net_device *dev);
static int vti_tunnel_bind_dev(struct net_device *dev);
/* Locking : hash tables are protected by RCU and RTNL */
#define for_each_ip_tunnel_rcu(start) \
for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))
#define VTI_XMIT(stats1, stats2) do { \
int err; \
int pkt_len = skb->len; \
@ -133,19 +128,19 @@ static struct ip_tunnel *vti_tunnel_lookup(struct net *net,
struct ip_tunnel *t;
struct vti_net *ipn = net_generic(net, vti_net_id);
for_each_ip_tunnel_rcu(ipn->tunnels_r_l[h0 ^ h1])
for_each_ip_tunnel_rcu(t, ipn->tunnels_r_l[h0 ^ h1])
if (local == t->parms.iph.saddr &&
remote == t->parms.iph.daddr && (t->dev->flags&IFF_UP))
return t;
for_each_ip_tunnel_rcu(ipn->tunnels_r[h0])
for_each_ip_tunnel_rcu(t, ipn->tunnels_r[h0])
if (remote == t->parms.iph.daddr && (t->dev->flags&IFF_UP))
return t;
for_each_ip_tunnel_rcu(ipn->tunnels_l[h1])
for_each_ip_tunnel_rcu(t, ipn->tunnels_l[h1])
if (local == t->parms.iph.saddr && (t->dev->flags&IFF_UP))
return t;
for_each_ip_tunnel_rcu(ipn->tunnels_wc[0])
for_each_ip_tunnel_rcu(t, ipn->tunnels_wc[0])
if (t && (t->dev->flags&IFF_UP))
return t;
return NULL;

13
net/ipv4/ipip.c
View File

@ -140,13 +140,6 @@ static void ipip_tunnel_setup(struct net_device *dev);
static void ipip_dev_free(struct net_device *dev);
static struct rtnl_link_ops ipip_link_ops __read_mostly;
/*
* Locking : hash tables are protected by RCU and RTNL
*/
#define for_each_ip_tunnel_rcu(start) \
for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))
static struct rtnl_link_stats64 *ipip_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *tot)
{
@ -189,16 +182,16 @@ static struct ip_tunnel *ipip_tunnel_lookup(struct net *net,
struct ip_tunnel *t;
struct ipip_net *ipn = net_generic(net, ipip_net_id);
for_each_ip_tunnel_rcu(ipn->tunnels_r_l[h0 ^ h1])
for_each_ip_tunnel_rcu(t, ipn->tunnels_r_l[h0 ^ h1])
if (local == t->parms.iph.saddr &&
remote == t->parms.iph.daddr && (t->dev->flags&IFF_UP))
return t;
for_each_ip_tunnel_rcu(ipn->tunnels_r[h0])
for_each_ip_tunnel_rcu(t, ipn->tunnels_r[h0])
if (remote == t->parms.iph.daddr && (t->dev->flags&IFF_UP))
return t;
for_each_ip_tunnel_rcu(ipn->tunnels_l[h1])
for_each_ip_tunnel_rcu(t, ipn->tunnels_l[h1])
if (local == t->parms.iph.saddr && (t->dev->flags&IFF_UP))
return t;

14
net/ipv6/ip6_gre.c
View File

@ -109,12 +109,6 @@ static u32 HASH_ADDR(const struct in6_addr *addr)
#define tunnels_r tunnels[2]
#define tunnels_l tunnels[1]
#define tunnels_wc tunnels[0]
/*
* Locking : hash tables are protected by RCU and RTNL
*/
#define for_each_ip_tunnel_rcu(start) \
for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))
static struct rtnl_link_stats64 *ip6gre_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *tot)
@ -172,7 +166,7 @@ static struct ip6_tnl *ip6gre_tunnel_lookup(struct net_device *dev,
ARPHRD_ETHER : ARPHRD_IP6GRE;
int score, cand_score = 4;
for_each_ip_tunnel_rcu(ign->tunnels_r_l[h0 ^ h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_r_l[h0 ^ h1]) {
if (!ipv6_addr_equal(local, &t->parms.laddr) ||
!ipv6_addr_equal(remote, &t->parms.raddr) ||
key != t->parms.i_key ||
@ -197,7 +191,7 @@ static struct ip6_tnl *ip6gre_tunnel_lookup(struct net_device *dev,
}
}
for_each_ip_tunnel_rcu(ign->tunnels_r[h0 ^ h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_r[h0 ^ h1]) {
if (!ipv6_addr_equal(remote, &t->parms.raddr) ||
key != t->parms.i_key ||
!(t->dev->flags & IFF_UP))
@ -221,7 +215,7 @@ static struct ip6_tnl *ip6gre_tunnel_lookup(struct net_device *dev,
}
}
for_each_ip_tunnel_rcu(ign->tunnels_l[h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_l[h1]) {
if ((!ipv6_addr_equal(local, &t->parms.laddr) &&
(!ipv6_addr_equal(local, &t->parms.raddr) ||
!ipv6_addr_is_multicast(local))) ||
@ -247,7 +241,7 @@ static struct ip6_tnl *ip6gre_tunnel_lookup(struct net_device *dev,
}
}
for_each_ip_tunnel_rcu(ign->tunnels_wc[h1]) {
for_each_ip_tunnel_rcu(t, ign->tunnels_wc[h1]) {
if (t->parms.i_key != key ||
!(t->dev->flags & IFF_UP))
continue;

13
net/ipv6/sit.c
View File

@ -81,13 +81,6 @@ struct sit_net {
struct net_device *fb_tunnel_dev;
};
/*
* Locking : hash tables are protected by RCU and RTNL
*/
#define for_each_ip_tunnel_rcu(start) \
for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))
static struct rtnl_link_stats64 *ipip6_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *tot)
{
@ -133,20 +126,20 @@ static struct ip_tunnel *ipip6_tunnel_lookup(struct net *net,
struct ip_tunnel *t;
struct sit_net *sitn = net_generic(net, sit_net_id);
for_each_ip_tunnel_rcu(sitn->tunnels_r_l[h0 ^ h1]) {
for_each_ip_tunnel_rcu(t, sitn->tunnels_r_l[h0 ^ h1]) {
if (local == t->parms.iph.saddr &&
remote == t->parms.iph.daddr &&
(!dev || !t->parms.link || dev->iflink == t->parms.link) &&
(t->dev->flags & IFF_UP))
return t;
}
for_each_ip_tunnel_rcu(sitn->tunnels_r[h0]) {
for_each_ip_tunnel_rcu(t, sitn->tunnels_r[h0]) {
if (remote == t->parms.iph.daddr &&
(!dev || !t->parms.link || dev->iflink == t->parms.link) &&
(t->dev->flags & IFF_UP))
return t;
}
for_each_ip_tunnel_rcu(sitn->tunnels_l[h1]) {
for_each_ip_tunnel_rcu(t, sitn->tunnels_l[h1]) {
if (local == t->parms.iph.saddr &&
(!dev || !t->parms.link || dev->iflink == t->parms.link) &&
(t->dev->flags & IFF_UP))