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Message-ID: <4795F88E.9090202@openvz.org>
Date: Tue, 22 Jan 2008 17:07:10 +0300
From: Pavel Emelyanov <xemul@...nvz.org>
To: David Miller <davem@...emloft.net>
CC: Linux Netdev List <netdev@...r.kernel.org>, devel@...nvz.org
Subject: [PATCH net-2.6.25 8/10][NETNS][FRAGS]: Isolate the secret interval
from namespaces.
Since we have one hashtable to lookup the fragment, having
different secret_interval-s for hash rebuild doesn't make
sense, so move this one to inet_frags.
The inet_frags_ctl becomes empty after this, so remove it.
The appropriate ctl table is kept read-only in namespaces.
Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
---
include/net/inet_frag.h | 6 +-----
include/net/netns/ipv6.h | 1 -
net/ipv4/inet_fragment.c | 4 ++--
net/ipv4/ip_fragment.c | 8 ++------
net/ipv6/netfilter/nf_conntrack_reasm.c | 6 +-----
net/ipv6/reassembly.c | 6 ++----
6 files changed, 8 insertions(+), 23 deletions(-)
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index de41359..1917fbe 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -31,18 +31,14 @@ struct inet_frag_queue {
#define INETFRAGS_HASHSZ 64
-struct inet_frags_ctl {
- int secret_interval;
-};
-
struct inet_frags {
struct list_head lru_list;
struct hlist_head hash[INETFRAGS_HASHSZ];
rwlock_t lock;
u32 rnd;
int qsize;
+ int secret_interval;
struct timer_list secret_timer;
- struct inet_frags_ctl *ctl;
unsigned int (*hashfn)(struct inet_frag_queue *);
void (*constructor)(struct inet_frag_queue *q,
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 87ab56a..187c424 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -14,7 +14,6 @@ struct netns_sysctl_ipv6 {
struct ctl_table_header *table;
struct ctl_table_header *frags_hdr;
#endif
- struct inet_frags_ctl frags;
int bindv6only;
int flush_delay;
int ip6_rt_max_size;
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 5ab399c..fcf5252 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -47,7 +47,7 @@ static void inet_frag_secret_rebuild(unsigned long dummy)
}
write_unlock(&f->lock);
- mod_timer(&f->secret_timer, now + f->ctl->secret_interval);
+ mod_timer(&f->secret_timer, now + f->secret_interval);
}
void inet_frags_init(struct inet_frags *f)
@@ -65,7 +65,7 @@ void inet_frags_init(struct inet_frags *f)
setup_timer(&f->secret_timer, inet_frag_secret_rebuild,
(unsigned long)f);
- f->secret_timer.expires = jiffies + f->ctl->secret_interval;
+ f->secret_timer.expires = jiffies + f->secret_interval;
add_timer(&f->secret_timer);
}
EXPORT_SYMBOL(inet_frags_init);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 80c2c19..00646ed 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -74,10 +74,6 @@ struct ipq {
struct inet_peer *peer;
};
-static struct inet_frags_ctl ip4_frags_ctl __read_mostly = {
- .secret_interval = 10 * 60 * HZ,
-};
-
static struct inet_frags ip4_frags;
int ip_frag_nqueues(struct net *net)
@@ -627,7 +623,7 @@ static struct ctl_table ip4_frags_ctl_table[] = {
{
.ctl_name = NET_IPV4_IPFRAG_SECRET_INTERVAL,
.procname = "ipfrag_secret_interval",
- .data = &ip4_frags_ctl.secret_interval,
+ .data = &ip4_frags.secret_interval,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -720,7 +716,6 @@ static int ipv4_frags_init_net(struct net *net)
void __init ipfrag_init(void)
{
ipv4_frags_init_net(&init_net);
- ip4_frags.ctl = &ip4_frags_ctl;
ip4_frags.hashfn = ip4_hashfn;
ip4_frags.constructor = ip4_frag_init;
ip4_frags.destructor = ip4_frag_free;
@@ -728,6 +723,7 @@ void __init ipfrag_init(void)
ip4_frags.qsize = sizeof(struct ipq);
ip4_frags.match = ip4_frag_match;
ip4_frags.frag_expire = ip_expire;
+ ip4_frags.secret_interval = 10 * 60 * HZ;
inet_frags_init(&ip4_frags);
}
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index c75ac17..6eed991 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -70,10 +70,6 @@ struct nf_ct_frag6_queue
__u16 nhoffset;
};
-static struct inet_frags_ctl nf_frags_ctl __read_mostly = {
- .secret_interval = 10 * 60 * HZ,
-};
-
static struct inet_frags nf_frags;
static struct netns_frags nf_init_frags;
@@ -701,7 +697,6 @@ int nf_ct_frag6_kfree_frags(struct sk_buff *skb)
int nf_ct_frag6_init(void)
{
- nf_frags.ctl = &nf_frags_ctl;
nf_frags.hashfn = nf_hashfn;
nf_frags.constructor = ip6_frag_init;
nf_frags.destructor = NULL;
@@ -709,6 +704,7 @@ int nf_ct_frag6_init(void)
nf_frags.qsize = sizeof(struct nf_ct_frag6_queue);
nf_frags.match = ip6_frag_match;
nf_frags.frag_expire = nf_ct_frag6_expire;
+ nf_frags.secret_interval = 10 * 60 * HZ;
nf_init_frags.timeout = IPV6_FRAG_TIMEOUT;
nf_init_frags.high_thresh = 256 * 1024;
nf_init_frags.low_thresh = 192 * 1024;
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 85f3fa3..8520700 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -658,7 +658,7 @@ static struct ctl_table ip6_frags_ctl_table[] = {
{
.ctl_name = NET_IPV6_IP6FRAG_SECRET_INTERVAL,
.procname = "ip6frag_secret_interval",
- .data = &init_net.ipv6.sysctl.frags.secret_interval,
+ .data = &ip6_frags.secret_interval,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -719,12 +719,9 @@ static inline void ip6_frags_sysctl_unregister(struct net *net)
static int ipv6_frags_init_net(struct net *net)
{
- ip6_frags.ctl = &net->ipv6.sysctl.frags;
-
net->ipv6.frags.high_thresh = 256 * 1024;
net->ipv6.frags.low_thresh = 192 * 1024;
net->ipv6.frags.timeout = IPV6_FRAG_TIMEOUT;
- net->ipv6.sysctl.frags.secret_interval = 10 * 60 * HZ;
inet_frags_init_net(&net->ipv6.frags);
@@ -748,6 +745,7 @@ int __init ipv6_frag_init(void)
ip6_frags.qsize = sizeof(struct frag_queue);
ip6_frags.match = ip6_frag_match;
ip6_frags.frag_expire = ip6_frag_expire;
+ ip6_frags.secret_interval = 10 * 60 * HZ;
inet_frags_init(&ip6_frags);
out:
return ret;
--
1.5.3.4
--
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