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Date: Tue, 01 Jun 2010 18:51:19 +0200
From: Eric Dumazet <eric.dumazet@...il.com>
To: David Miller <davem@...emloft.net>
Cc: netdev <netdev@...r.kernel.org>, Patrick McHardy <kaber@...sh.net>
Subject: [PATCH net-next-2.6] net: CONFIG_NET_NS reduction
Use read_pnet() and write_pnet() to reduce number of ifdef CONFIG_NET_NS
Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
---
include/linux/netdevice.h | 6 +-----
include/net/cfg80211.h | 15 ++-------------
include/net/genetlink.h | 15 ++-------------
include/net/netfilter/nf_conntrack.h | 6 +-----
include/net/sock.h | 10 ++--------
net/ipv6/addrlabel.c | 6 +-----
net/netfilter/nf_conntrack_core.c | 8 ++------
7 files changed, 11 insertions(+), 55 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a249161..bd6b753 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1087,11 +1087,7 @@ static inline void netdev_for_each_tx_queue(struct net_device *dev,
static inline
struct net *dev_net(const struct net_device *dev)
{
-#ifdef CONFIG_NET_NS
- return dev->nd_net;
-#else
- return &init_net;
-#endif
+ return read_pnet(&dev->nd_net);
}
static inline
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index b44a2e5..e7ebeb8 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1330,26 +1330,15 @@ struct wiphy {
char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
};
-#ifdef CONFIG_NET_NS
-static inline struct net *wiphy_net(struct wiphy *wiphy)
-{
- return wiphy->_net;
-}
-
-static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
-{
- wiphy->_net = net;
-}
-#else
static inline struct net *wiphy_net(struct wiphy *wiphy)
{
- return &init_net;
+ return read_pnet(&wiphy->_net);
}
static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
{
+ write_pnet(&wiphy->_net, net);
}
-#endif
/**
* wiphy_priv - return priv from wiphy
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index eb551ba..f7dcd2c 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -68,26 +68,15 @@ struct genl_info {
#endif
};
-#ifdef CONFIG_NET_NS
static inline struct net *genl_info_net(struct genl_info *info)
{
- return info->_net;
+ return read_pnet(&info->_net);
}
static inline void genl_info_net_set(struct genl_info *info, struct net *net)
{
- info->_net = net;
+ write_pnet(&info->_net, net);
}
-#else
-static inline struct net *genl_info_net(struct genl_info *info)
-{
- return &init_net;
-}
-
-static inline void genl_info_net_set(struct genl_info *info, struct net *net)
-{
-}
-#endif
/**
* struct genl_ops - generic netlink operations
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index bde095f..bbfdd94 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -152,11 +152,7 @@ extern struct net init_net;
static inline struct net *nf_ct_net(const struct nf_conn *ct)
{
-#ifdef CONFIG_NET_NS
- return ct->ct_net;
-#else
- return &init_net;
-#endif
+ return read_pnet(&ct->ct_net);
}
/* Alter reply tuple (maybe alter helper). */
diff --git a/include/net/sock.h b/include/net/sock.h
index ca241ea..3461e5d 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1724,19 +1724,13 @@ static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb, int copied_e
static inline
struct net *sock_net(const struct sock *sk)
{
-#ifdef CONFIG_NET_NS
- return sk->sk_net;
-#else
- return &init_net;
-#endif
+ return read_pnet(&sk->sk_net);
}
static inline
void sock_net_set(struct sock *sk, struct net *net)
{
-#ifdef CONFIG_NET_NS
- sk->sk_net = net;
-#endif
+ write_pnet(&sk->sk_net, net);
}
/*
diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c
index 8c4348c..f0e774c 100644
--- a/net/ipv6/addrlabel.c
+++ b/net/ipv6/addrlabel.c
@@ -53,11 +53,7 @@ static struct ip6addrlbl_table
static inline
struct net *ip6addrlbl_net(const struct ip6addrlbl_entry *lbl)
{
-#ifdef CONFIG_NET_NS
- return lbl->lbl_net;
-#else
- return &init_net;
-#endif
+ return read_pnet(&lbl->lbl_net);
}
/*
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index eeeb8bc..7728898 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -619,9 +619,7 @@ struct nf_conn *nf_conntrack_alloc(struct net *net, u16 zone,
ct->tuplehash[IP_CT_DIR_REPLY].hnnode.pprev = NULL;
/* Don't set timer yet: wait for confirmation */
setup_timer(&ct->timeout, death_by_timeout, (unsigned long)ct);
-#ifdef CONFIG_NET_NS
- ct->ct_net = net;
-#endif
+ write_pnet(&ct->ct_net, net);
#ifdef CONFIG_NF_CONNTRACK_ZONES
if (zone) {
struct nf_conntrack_zone *nf_ct_zone;
@@ -1363,9 +1361,7 @@ static int nf_conntrack_init_init_net(void)
goto err_extend;
#endif
/* Set up fake conntrack: to never be deleted, not in any hashes */
-#ifdef CONFIG_NET_NS
- nf_conntrack_untracked.ct_net = &init_net;
-#endif
+ write_pnet(&nf_conntrack_untracked.ct_net, &init_net);
atomic_set(&nf_conntrack_untracked.ct_general.use, 1);
/* - and look it like as a confirmed connection */
set_bit(IPS_CONFIRMED_BIT, &nf_conntrack_untracked.status);
--
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