| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1227634045-27534-13-git-send-email-adobriyan@gmail.com>
Date: Tue, 25 Nov 2008 20:26:45 +0300
From: Alexey Dobriyan <adobriyan@...il.com>
To: davem@...emloft.net
Cc: herbert@...dor.apana.org.au, kuznet@....inr.ac.ru,
netdev@...r.kernel.org, containers@...ts.linux-foundation.org,
Alexey Dobriyan <adobriyan@...il.com>
Subject: [PATCH 13/53] netns xfrm: per-netns km_waitq
Dissalow spurious wakeups in __xfrm_lookup().
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---
include/net/netns/xfrm.h | 3 +++
include/net/xfrm.h | 1 -
net/key/af_key.c | 2 +-
net/xfrm/xfrm_policy.c | 4 ++--
net/xfrm/xfrm_state.c | 16 +++++++---------
5 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
index 8055535..2a383c8 100644
--- a/include/net/netns/xfrm.h
+++ b/include/net/netns/xfrm.h
@@ -2,6 +2,7 @@
#define __NETNS_XFRM_H
#include <linux/list.h>
+#include <linux/wait.h>
#include <linux/workqueue.h>
struct netns_xfrm {
@@ -22,6 +23,8 @@ struct netns_xfrm {
struct work_struct state_hash_work;
struct hlist_head state_gc_list;
struct work_struct state_gc_work;
+
+ wait_queue_head_t km_waitq;
};
#endif
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 9da8903..0d4353c 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1459,7 +1459,6 @@ extern int xfrm_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
struct xfrm_kmaddress *k);
#endif
-extern wait_queue_head_t km_waitq;
extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
extern int km_report(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
diff --git a/net/key/af_key.c b/net/key/af_key.c
index bde8aad..f202ba6 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1411,7 +1411,7 @@ static int pfkey_acquire(struct sock *sk, struct sk_buff *skb, struct sadb_msg *
spin_lock_bh(&x->lock);
if (x->km.state == XFRM_STATE_ACQ) {
x->km.state = XFRM_STATE_ERROR;
- wake_up(&km_waitq);
+ wake_up(&init_net.xfrm.km_waitq);
}
spin_unlock_bh(&x->lock);
xfrm_state_put(x);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 8e7671b..cf2bf3a 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1691,11 +1691,11 @@ restart:
if (err == -EAGAIN && (flags & XFRM_LOOKUP_WAIT)) {
DECLARE_WAITQUEUE(wait, current);
- add_wait_queue(&km_waitq, &wait);
+ add_wait_queue(&init_net.xfrm.km_waitq, &wait);
set_current_state(TASK_INTERRUPTIBLE);
schedule();
set_current_state(TASK_RUNNING);
- remove_wait_queue(&km_waitq, &wait);
+ remove_wait_queue(&init_net.xfrm.km_waitq, &wait);
nx = xfrm_tmpl_resolve(pols, npols, fl, xfrm, family);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 69c0b06..24bd89e 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -170,9 +170,6 @@ out_unlock:
mutex_unlock(&hash_resize_mutex);
}
-DECLARE_WAIT_QUEUE_HEAD(km_waitq);
-EXPORT_SYMBOL(km_waitq);
-
static DEFINE_RWLOCK(xfrm_state_afinfo_lock);
static struct xfrm_state_afinfo *xfrm_state_afinfo[NPROTO];
@@ -399,7 +396,7 @@ static void xfrm_state_gc_task(struct work_struct *work)
hlist_for_each_entry_safe(x, entry, tmp, &gc_list, gclist)
xfrm_state_gc_destroy(x);
- wake_up(&km_waitq);
+ wake_up(&net->xfrm.km_waitq);
}
static inline unsigned long make_jiffies(long secs)
@@ -470,7 +467,7 @@ resched:
expired:
if (x->km.state == XFRM_STATE_ACQ && x->id.spi == 0) {
x->km.state = XFRM_STATE_EXPIRED;
- wake_up(&km_waitq);
+ wake_up(&init_net.xfrm.km_waitq);
next = 2;
goto resched;
}
@@ -638,7 +635,7 @@ restart:
out:
spin_unlock_bh(&xfrm_state_lock);
- wake_up(&km_waitq);
+ wake_up(&init_net.xfrm.km_waitq);
return err;
}
EXPORT_SYMBOL(xfrm_state_flush);
@@ -929,7 +926,7 @@ static void __xfrm_state_insert(struct xfrm_state *x)
if (x->replay_maxage)
mod_timer(&x->rtimer, jiffies + x->replay_maxage);
- wake_up(&km_waitq);
+ wake_up(&init_net.xfrm.km_waitq);
init_net.xfrm.state_num++;
@@ -1743,7 +1740,7 @@ void km_state_expired(struct xfrm_state *x, int hard, u32 pid)
km_state_notify(x, &c);
if (hard)
- wake_up(&km_waitq);
+ wake_up(&init_net.xfrm.km_waitq);
}
EXPORT_SYMBOL(km_state_expired);
@@ -1794,7 +1791,7 @@ void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid)
km_policy_notify(pol, dir, &c);
if (hard)
- wake_up(&km_waitq);
+ wake_up(&init_net.xfrm.km_waitq);
}
EXPORT_SYMBOL(km_policy_expired);
@@ -2089,6 +2086,7 @@ int __net_init xfrm_state_init(struct net *net)
INIT_WORK(&net->xfrm.state_hash_work, xfrm_hash_resize);
INIT_HLIST_HEAD(&net->xfrm.state_gc_list);
INIT_WORK(&net->xfrm.state_gc_work, xfrm_state_gc_task);
+ init_waitqueue_head(&net->xfrm.km_waitq);
return 0;
out_byspi:
--
1.5.6.5
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists