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Message-Id: <20080217.000049.88383747.xiyou.wangcong@gmail.com>
Date: Sun, 17 Feb 2008 00:00:49 +0800 (CST)
From: WANG Cong <xiyou.wangcong@...il.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc: Herbert Xu <herbert@...dor.apana.org.au>,
David Miller <davem@...emloft.net>,
Andrew Morton <akpm@...l.org>, netdev@...r.kernel.org
Subject: [Patch]net/xfrm/xfrm_state.c: replace timer with delayed_work
Also suggested by Herbert Xu, using workqueue is better than timer
for net/xfrm/xfrm_state.c, so replace them with delayed_work.
Note that, this patch is not fully tested, just compile and
run as a whole on an Intel Core Duo matchine. So should be
in -mm first.
Signed-off-by: WANG Cong <xiyou.wangcong@...il.com>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: David Miller <davem@...emloft.net>
---
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index ac72116..ff718b4 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -188,14 +188,14 @@ struct xfrm_state
u32 replay_maxage;
u32 replay_maxdiff;
- /* Replay detection notification timer */
- struct timer_list rtimer;
+ /* Replay detection notification delayed work */
+ struct delayed_work rwork;
/* Statistics */
struct xfrm_stats stats;
struct xfrm_lifetime_cur curlft;
- struct timer_list timer;
+ struct delayed_work work;
/* Last used time */
unsigned long lastused;
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 7ba65e8..e0511c9 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -379,8 +379,8 @@ static void xfrm_put_mode(struct xfrm_mode *mode)
static void xfrm_state_gc_destroy(struct xfrm_state *x)
{
- del_timer_sync(&x->timer);
- del_timer_sync(&x->rtimer);
+ cancel_delayed_work_sync(&x->work);
+ cancel_delayed_work_sync(&x->rwork);
kfree(x->aalg);
kfree(x->ealg);
kfree(x->calg);
@@ -423,9 +423,10 @@ static inline unsigned long make_jiffies(long secs)
return secs*HZ;
}
-static void xfrm_timer_handler(unsigned long data)
+static void xfrm_work_handler(struct work_struct *w)
{
- struct xfrm_state *x = (struct xfrm_state*)data;
+ struct xfrm_state *x =
+ container_of((struct delayed_work *)w, struct xfrm_state, work);
unsigned long now = get_seconds();
long next = LONG_MAX;
int warn = 0;
@@ -476,7 +477,7 @@ static void xfrm_timer_handler(unsigned long data)
km_state_expired(x, 0, 0);
resched:
if (next != LONG_MAX)
- mod_timer(&x->timer, jiffies + make_jiffies(next));
+ schedule_delayed_work(&x->work, make_jiffies(next));
goto out;
@@ -499,7 +500,7 @@ out:
spin_unlock(&x->lock);
}
-static void xfrm_replay_timer_handler(unsigned long data);
+static void xfrm_replay_work_handler(struct work_struct *);
struct xfrm_state *xfrm_state_alloc(void)
{
@@ -513,9 +514,8 @@ struct xfrm_state *xfrm_state_alloc(void)
INIT_HLIST_NODE(&x->bydst);
INIT_HLIST_NODE(&x->bysrc);
INIT_HLIST_NODE(&x->byspi);
- setup_timer(&x->timer, xfrm_timer_handler, (unsigned long)x);
- setup_timer(&x->rtimer, xfrm_replay_timer_handler,
- (unsigned long)x);
+ INIT_DELAYED_WORK(&x->work, xfrm_work_handler);
+ INIT_DELAYED_WORK(&x->rwork, xfrm_replay_work_handler);
x->curlft.add_time = get_seconds();
x->lft.soft_byte_limit = XFRM_INF;
x->lft.soft_packet_limit = XFRM_INF;
@@ -851,8 +851,7 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
hlist_add_head(&x->byspi, xfrm_state_byspi+h);
}
x->lft.hard_add_expires_seconds = sysctl_xfrm_acq_expires;
- x->timer.expires = jiffies + sysctl_xfrm_acq_expires*HZ;
- add_timer(&x->timer);
+ schedule_delayed_work(&x->work, sysctl_xfrm_acq_expires*HZ);
xfrm_state_num++;
xfrm_hash_grow_check(x->bydst.next != NULL);
} else {
@@ -923,9 +922,9 @@ static void __xfrm_state_insert(struct xfrm_state *x)
hlist_add_head(&x->byspi, xfrm_state_byspi+h);
}
- mod_timer(&x->timer, jiffies + HZ);
+ schedule_delayed_work(&x->work, HZ);
if (x->replay_maxage)
- mod_timer(&x->rtimer, jiffies + x->replay_maxage);
+ schedule_delayed_work(&x->rwork, x->replay_maxage);
wake_up(&km_waitq);
@@ -1034,8 +1033,7 @@ static struct xfrm_state *__find_acq_core(unsigned short family, u8 mode, u32 re
x->props.reqid = reqid;
x->lft.hard_add_expires_seconds = sysctl_xfrm_acq_expires;
xfrm_state_hold(x);
- x->timer.expires = jiffies + sysctl_xfrm_acq_expires*HZ;
- add_timer(&x->timer);
+ schedule_delayed_work(&x->work, sysctl_xfrm_acq_expires*HZ);
hlist_add_head(&x->bydst, xfrm_state_bydst+h);
h = xfrm_src_hash(daddr, saddr, family);
hlist_add_head(&x->bysrc, xfrm_state_bysrc+h);
@@ -1302,7 +1300,7 @@ out:
memcpy(&x1->lft, &x->lft, sizeof(x1->lft));
x1->km.dying = 0;
- mod_timer(&x1->timer, jiffies + HZ);
+ schedule_delayed_work(&x1->work, HZ);
if (x1->curlft.use_time)
xfrm_state_check_expire(x1);
@@ -1327,7 +1325,7 @@ int xfrm_state_check_expire(struct xfrm_state *x)
if (x->curlft.bytes >= x->lft.hard_byte_limit ||
x->curlft.packets >= x->lft.hard_packet_limit) {
x->km.state = XFRM_STATE_EXPIRED;
- mod_timer(&x->timer, jiffies);
+ schedule_delayed_work(&x->work, 0);
return -EINVAL;
}
@@ -1596,13 +1594,14 @@ void xfrm_replay_notify(struct xfrm_state *x, int event)
km_state_notify(x, &c);
if (x->replay_maxage &&
- !mod_timer(&x->rtimer, jiffies + x->replay_maxage))
+ !schedule_delayed_work(&x->rwork, x->replay_maxage))
x->xflags &= ~XFRM_TIME_DEFER;
}
-static void xfrm_replay_timer_handler(unsigned long data)
+static void xfrm_replay_work_handler(struct work_struct *w)
{
- struct xfrm_state *x = (struct xfrm_state*)data;
+ struct xfrm_state *x =
+ container_of((struct delayed_work *)w, struct xfrm_state, rwork);
spin_lock(&x->lock);
--
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